Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| characterization of c1q in teleosts: insight into the molecular and functional evolution of c1q family and classical pathway. | c1qs are key components of the classical complement pathway. they have been well documented in human and mammals, but little is known about their molecular and functional characteristics in fish. in the present study, full-length cdnas of c1qa, c1qb, and c1qc from zebrafish (danio rerio) were cloned, revealing the conservation of their chromosomal synteny and organization between zebrafish and other species. for functional analysis, the globular heads of c1qa (gha), c1qb (ghb), and c1qc (ghc) we ... | 2010 | 20615881 |
| amino acid sequence of myoglobin from emu (dromaius novaehollandiae) skeletal muscle. | the objective of the present study was to characterize the primary structure of emu myoglobin (mb). emu mb was isolated from iliofibularis muscle employing gel-filtration chromatography. matrix assisted laser desorption ionization-time of flight mass spectrometry was employed to determine the exact molecular mass of emu mb in comparison with horse mb, and edman degradation was utilized to characterize the amino acid sequence. the molecular mass of emu mb was 17,380 da and was close to those repo ... | 2010 | 20621424 |
| elevated mcl-1 perturbs lymphopoiesis, promotes transformation of hematopoietic stem/progenitor cells, and enhances drug resistance. | diverse human cancers with poor prognosis, including many lymphoid and myeloid malignancies, exhibit high levels of mcl-1. to explore the impact of mcl-1 overexpression on the hematopoietic compartment, we have generated vavp-mcl-1 transgenic mice. their lymphoid and myeloid cells displayed increased resistance to a variety of cytotoxic agents. myelopoiesis was relatively normal, but lymphopoiesis was clearly perturbed, with excess mature b and t cells accumulating. rather than the follicular ly ... | 2010 | 20631380 |
| preparation, stability and cytocompatibility of magnetic/pla-peg hybrids. | hybrid nanocolloids based on biodegradable polymers of poly(lactide) (pla) or poly(lactide)-block-poly(ethylene glycol) (pla-peg) and hydrophobic iron oxide magnetic nanoparticles (mnps) of ca. 5 nm are prepared via a self-assembly route. the magnetic nanoparticles are organized in superclusters inside the hydrophobic core of pla-peg micelles or cholate-stabilized pla nanospheres. the hydrodynamic diameter of mnps-loaded pla nanospheres is approximately 250 nm, whereas that of mnps-loaded pla-pe ... | 2010 | 20644760 |
| carbon-stabilized iron nanoparticles for environmental remediation. | ferromagnetic carbon-coated fe nanoparticles (core size of 15 nm, saturated magnetization of ms=218 emu g(-1) and coercivity of hc=62 oe), fabricated at a mild temperature, demonstrate a strong ability to effectively remove more than 95 wt% of cr(vi) in waste water via carbon shell physical adsorption, which is much higher than the commercially available fe nps. | 2010 | 20648288 |
| effect of doping on the morphology and multiferroic properties of bifeo3 nanorods. | in this study we report the synthesis of bifeo(3) nanorods using a sonochemical technique. the nanorods had a diameter of 20-50 nm, a length of 100-500 nm and exhibit aspect ratios in the range of 5-10. however, after doping, the tem images of bi(0.9)ba(0.1)fe(0.9)mn(0.1)o(3) and bi(0.9)ca(0.1)fe(0.9)cr(0.1)o(3) samples show that the aspect ratios of both the double doped samples have reduced considerably, while retaining the crystallinity of the particles. bifeo(3) nanorods show a weak ferromag ... | 2010 | 20648341 |
| ultraviolet laser action in ferromagnetic zn1-xfexo nanoneedles. | fe-doped zno nanoneedles (nds) were fabricated by an ar+ ion sputtering technique operated at room temperature. the as-grown samples show both ferromagnetic and lasing properties. the saturated magnetization moment was measured from 0.307 to 0.659 emu cm-3 at the field of 10 koe with various fe concentrations. intense ultraviolet random lasing emission was observed from zn1 - xfexo nds at room temperature. the x-ray photoelectron spectroscopy result reveals that the doped fe atoms occupy the zn ... | 2009 | 20652128 |
| characterization of emu, the arabidopsis homolog of the yeast tho complex member hpr1. | diverse and precise control is essential for eukaryotic gene expression. this is accomplished through the recruitment of a myriad of proteins to a nascent messenger rna (mrna) to mediate modifications, such as capping, splicing, 3'-end processing, and export. despite being important for every cell, however, the mechanism by which the formation of diverse messenger ribonucleoprotein (mrnp) particles contributes to maintaining intricate systems in the multicellular organism remains incompletely de ... | 2010 | 20668032 |
| one-pot green synthesis and bioapplication ofl-arginine-capped superparamagnetic fe3o4 nanoparticles. | water-solublel-arginine-capped fe3o4 nanoparticles were synthesized using a one-pot and green method. nontoxic, renewable and inexpensive reagents including fecl3,l-arginine, glycerol and water were chosen as raw materials. fe3o4 nanoparticles show different dispersive states in acidic and alkaline solutions for the two distinct forms of surface bindingl-arginine. powder x-ray diffraction and x-ray photoelectron spectroscopy were used to identify the structure of fe3o4 nanocrystals. the products ... | 2009 | 20672030 |
| facile synthesis of bimetallic ag/ni core/sheath nanowires and their magnetic and electrical properties. | this paper describes a facile method for coating ag nanowires with uniform, ferromagnetic sheaths made of polycrystalline ni. a typical sample of these core/sheath nanowires had a saturation magnetization around 33 emu g(-1). we also demonstrated the use of this magnetic property to align the nanowires by simply placing a suspension of the nanowires on a substrate in a magnetic field and allowing the solvent to evaporate. the electrical conductivity of these core/sheath nanowires (2 × 10(3) s cm ... | 2010 | 20677185 |
| cobalt nanoparticle langmuir-schaefer films on ethylene glycol subphase. | the langmuir-schaefer (ls) technique was applied to prepare two-dimensional films of tridodecylamine (tda)-stabilized co nanoparticles. ethylene glycol was used as the subphase because the co nanoparticles spread better on it than on water. surface pressure-area isotherms provided very little information on the floating films, and brewster angle microscopy (bam) was needed to characterize the film formation in situ. in addition to the subphase, various other experimental factors were tested in t ... | 2010 | 20687577 |
| the syk inhibitor fostamatinib disodium (r788) inhibits tumor growth in the eμ- tcl1 transgenic mouse model of cll by blocking antigen-dependent b-cell receptor signaling. | inhibition of antigen-dependent b-cell receptor (bcr) signaling is considered a promising therapeutic approach in chronic lymphocytic leukemia (cll), but experimental in vivo evidence to support this view is still lacking. we have now investigated whether inhibition of bcr signaling with the selective syk inhibitor fostamatinib disodium (r788) will affect the growth of the leukemias that develop in the eμ-tcl1 transgenic mouse model of cll. similarly to human cll, these leukemias express stereot ... | 2010 | 20716772 |
| nonepileptic psychogenic status: markedly prolonged psychogenic nonepileptic seizures. | little is known about markedly prolonged psychogenic nonepileptic seizures (pnes) though they are reported in up to 78% of pnes. entry to the tertiary referral epilepsy monitoring unit (emu) is often urgent and the stay usually brief, resulting thus far in almost no data regarding outcomes. the american epilepsy society (aes) nonepileptic seizure task force was asked to gather evidence for consensus of practice and treatment for pnes and its spectrum. as part of the subcommittee focusing on "pse ... | 2010 | 20724221 |
| aqueous solution preparation, structure, and magnetic properties of nano-granular zn(x)fe(3-x)o(4) ferrite films. | this paper reports a simple and novel process for preparing nano-granular zn(x)fe(3-x)o(4) ferrite films (0 </= x </= 0.99) on ag-coated glass substrates in dmab-fe(no(3))(3)-zn(no(3))(2) solutions. the deposition process may be applied in preparing other cations-doped spinel ferrite films. the zn content x in the zn(x)fe(3-x)o(4) films depends linearly on the zn(2+) ion concentration ranging from 0.0 to 1.0 mm in the aqueous solutions. with x increasing from 0 to 0.99, the lattice constant incr ... | 2010 | 20730079 |
| the use of magnetite nanoparticles for implant-assisted magnetic drug targeting in thrombolytic therapy. | implant-assisted targeting of magnetic particles under the influence of an external magnetic field has previously been verified through mathematical modeling, in vitro studies, and in vivo studies on rat carotid arteries as a feasible method for localized drug delivery. the present study focuses on the development of nanoparticles for the treatment of in-stent thrombosis. magnetic nanoparticles in the size-range 10-30 nm were synthesized in a one-pot procedure by precipitation of ferrous hydroxi ... | 2010 | 20732712 |
| detection of endogenous magnetic nanoparticles with a tunnelling magneto resistance sensor. | the magnetotactic bacterium magnetospirillum sp. has been cultured and the properties of its endogenous magnetic nanoparticles characterized. electron-microscopic analyses indicate that the endogenous magnetite nanoparticles in magnetospirillum sp. are coated with a 3-4 nm thick transparent shell, forming a magnetosome. these magnetite nanoparticles had diameters of 50.9+/-13.3 nm, in good agreement with the diameter of 40.6+/-1.2 nm extracted from magnetometry. each magnetospirillum sp. bacteri ... | 2010 | 20732892 |
| facile preparation of magnetic carbonaceous nanoparticles for pb2+ ions removal. | magnetic carbonaceous nanoparticles were prepared by a facile two-step solution phase thermal synthesis. magnetic nanoparticles (mnps) with size less than 100 nm were first generated from fecl(3) in a solvothermal reaction. the size could be significantly reduced to approximately 30 nm when 1,6-hexanediamine was employed in the reaction solution to functionalize the surface of mnps with amine. both the plain and amine-functionalized mnps (mh) were effectively encapsulated in the carbonaceous she ... | 2010 | 20800347 |
| changes in bone fatigue resistance due to collagen degradation. | clinical tools for evaluating fracture risk, such as dual energy x-ray absorptiometry (dxa) and quantitative ultrasound (qus), focus on bone mineral and cannot detect changes in the collagen matrix that affect bone mechanical properties. however, the mechanical response tissue analyzer (mrta) directly measures a whole bone mechanical property. the aims of our study were to investigate the changes in fatigue resistance after collagen degradation and to determine if clinical tools can detect chang ... | 2011 | 20803484 |
| kaposi sarcoma-associated herpesvirus-encoded viral flice inhibitory protein (vflip) k13 cooperates with myc to promote lymphoma in mice. | primary effusion lymphoma (pel) is an aggressive form of lymphoma that is associated with infection by kaposi's sarcoma-associated herpesvirus (kshv). one of the kshv genes expressed in pel cells is k13, a potent activator of the nf-κb pathway. k13 transgenic mice develop lymphomas, but after a long period of latency. a possible candidate that could cooperate with k13 in the development of pel is c-myc, whose expression is frequently dysregulated in pel cells. to study the cooperative interactio ... | 2010 | 20818173 |
| synthesis of carbon-encapsulated superparamagnetic colloidal nanoparticles with magnetic-responsive photonic crystal property. | the core/shell structure of magnetite/carbon colloidal nanoparticles (cnps) with average size about 190 nm has been prepared via a one-step solvothermal process using ferrocene as a single reactant. the composition, phase, and morphology of the nanostructure have been characterized by x-ray diffraction, and transmission electron microscopy. magnetic measurements reveal the superparamagnetic nature of the material with a magnetization saturation of 40.2 emu/g at room temperature. under the induct ... | 2010 | 20820620 |
| maximal killing of lymphoma cells by dna damage-inducing therapy requires not only the p53 targets puma and noxa, but also bim. | dna-damaging chemotherapy is the backbone of cancer treatment, although it is not clear how such treatments kill tumor cells. in nontransformed lymphoid cells, the combined loss of 2 proapoptotic p53 target genes, puma and noxa, induces as much resistance to dna damage as loss of p53 itself. in eμ-myc lymphomas, however, lack of both puma and noxa resulted in no greater drug resistance than lack of puma alone. a third b-cell lymphoma-2 homology domain (bh)3-only gene, bim, although not a direct ... | 2010 | 20829369 |
| an arf-independent c-myc-activated tumor suppression pathway mediated by ribosomal protein-mdm2 interaction. | in vitro studies have shown that inhibition of ribosomal biogenesis can activate p53 through ribosomal protein (rp)-mediated suppression of mdm2 e3 ligase activity. to study the physiological significance of the rp-mdm2 interaction, we generated mice carrying a cancer-associated cysteine-to-phenylalanine substitution in the zinc finger of mdm2 that disrupted its binding to rpl5 and rpl11. mice harboring this mutation, retain normal p53 response to dna damage, but lack of p53 response to perturba ... | 2010 | 20832751 |
| a new cofe(2)o(4)-cr(2)o(3)-sio(2) fluorescent magnetic nanocomposite. | a combined sonochemical co-precipitaion method has been developed for the synthesis of a cofe(2)o(4)-cr(2)o(3)-sio(2) magnetic nanocomposite. the synthesis involved the pre-synthesis of cofe(2)o(4)-cr(2)o(3) nanoparticles, which were subsequently coated with sio(2) by treatment with tetraethyl orthosilicate. it was observed that the as-prepared cofe(2)o(4)-cr(2)o(3)-sio(2) nanocomposite exhibits photoluminescence properties without the addition of any external fluorescent marker. the fluorescent ... | 2010 | 20835438 |
| long bone morphometrics for human from non-human discrimination. | forensic anthropologists are frequently required to verify the human origin of complete and partial skeletal remains. this determination, however, can be difficult for bone fragments with few or no distinctive morphological markers. current methods of distinguishing human from non-human bone fragments include microscopic, immunological and dna testing, which are each limited to some degree (e.g. time consuming and expensive). the purpose of this study is to investigate an alternative morphometri ... | 2010 | 20837249 |
| evaluation of folate conjugated pegylated thermosensitive magnetic nanocomposites for tumor imaging and therapy. | superparamagnetic iron oxide nanoparticles (spions) have been receiving great attention lately in biomedical applications, such as in magnetic resonance imaging and drug delivery. however, their systemic administration still remains a challenge due to their hydrophobic nature with instances of aggregation leading to fast reticuloendothelial system (res) uptake. in this study, magnetic nanocomposites with thermosensitive polymer have been investigated. random polymers of n-isopropylacrylamide (ni ... | 2011 | 20851578 |
| widespread overexpression of epitope-tagged mdm4 does not accelerate tumor formation in vivo. | mdm2 and mdm4 are critical negative regulators of p53. a large body of evidence indicates that elevated expression of either mdm2 or mdm4 may favor tumor formation by inhibiting p53 tumor suppression function. to explore this possibility in vivo, we generated conditional mdm2 and mdm4 transgenic mice. we show that although both transgenes are designed to be expressed ubiquitously and at comparable levels, only the mdm4 transgenic protein is produced at high levels in vivo. in contrast, exogenous ... | 2010 | 20855528 |
| rags' eye view of the immunoglobulin heavy chain gene locus. | the immunoglobulin heavy chain (igh) gene locus is activated at a precise stage of b lymphocyte development to undergo gene rearrangements that assemble the functional gene. in this review we summarize our current understanding of the chromatin state of the igh as it appears just prior to the initiation of v(d)j recombination, and the implications of this structure for regulation of recombination. we also examine the role of the intron enhancer, eμ, in establishing the pre-rearrangement chromati ... | 2010 | 20864355 |
| an integrated genetic-genomic approach for the identification of novel cancer loci in mice sensitized to c-myc-induced apoptosis. | deregulated c-myc is associated with a wide range of human cancers. in many cell types, overexpression of c-myc potently promotes cell growth and proliferation concomitant with the induction of apoptosis. secondary genetic events that shift this balance either by increasing growth and proliferation or limiting apoptosis are likely to cooperate with c-myc in tumorigenesis. here, the authors have performed large-scale insertional mutagenesis in eμ-c-myc mice that, through mdm2 loss of function mut ... | 2010 | 20927200 |
| comparison of identical and functional igh alleles reveals a nonessential role for eμ in somatic hypermutation and class-switch recombination. | somatic hypermutation (shm), coupled with ag selection, provides a mechanism for generating abs with high affinity for invading pathogens. class-switch recombination (csr) ensures that these abs attain pathogen-appropriate effector functions. although the enzyme critical to both processes, activation-induced cytidine deaminase, has been identified, it remains unclear which cis-elements within the ig loci are responsible for recruiting activation-induced cytidine deaminase and promoting its activ ... | 2010 | 20937850 |
| reproductive tract vasculature of the female emu (dromaius novaehollandiae). | the arterial supply of the ovary and oviduct is provided by the ovarian artery, cranial oviductal artery, accessory cranial oviductal artery, middle oviductal artery, caudal oviductal artery and the medial and lateral vaginal arteries. these arteries supply various regions of the oviduct and are branches of either the left cranial renal artery, left external iliac artery, left middle renal artery, left lateral caudal artery or the left pudendal artery. the veins that drain the reproductive tract ... | 2011 | 20946315 |
| template-assisted fabrication of magnetically responsive hollow titania capsules. | this study reports on the fabrication of magnetically responsive hollow titania capsules by confining the superparamagnetic fe(3)o(4) nanoparticles within a hollow and porous titania (tio(2)) shell. the employed protocol involves precipitation of titania shell on the magnetite (fe(3)o(4)) encapsulated polystyrene beads followed by the calcination of resulting composite particles at elevated temperature. scanning electron microscopy and transmission electron microscopy reveal the presence of a th ... | 2010 | 20949923 |
| sept4/arts is required for stem cell apoptosis and tumor suppression. | inhibitor of apoptosis proteins (iaps) are frequently overexpressed in tumors and have become promising targets for developing anti-cancer drugs. iaps can be inhibited by natural antagonists, but a physiological requirement of mammalian iap antagonists remains to be established. here we show that deletion of the mouse sept4 gene, which encodes the iap antagonist arts, promotes tumor development. sept4-null mice have increased numbers of hematopoietic stem and progenitor cells, elevated xiap prot ... | 2010 | 20952537 |
| supraparamagnetic, conductive, and processable multifunctional graphene nanosheets coated with high-density fe3o4 nanoparticles. | the amazing properties of graphene are triggering extensive interests of both scientists and engineers, whereas how to fully utilize the unique attributes of graphene to construct novel graphene-based composites with tailor-made, integrated functions remains to be a challenge. here, we report a facile approach to multifunctional iron oxide nanoparticle-attached graphene nanosheets (graphene@fe(3)o(4)) which show the integrated properties of strong supraparamagnetism, electrical conductivity, hig ... | 2010 | 20958021 |
| lactoferrin-conjugated superparamagnetic iron oxide nanoparticles as a specific mri contrast agent for detection of brain glioma in vivo. | a specific contrast agent for magnetic resonance imaging (mri) is crucial to brain tumor patients for the surgical operation or the postoperative radiology. this study explored lactoferrin-conjugated superparamagnetic iron oxide nanoparticles (lf-spions) as an mri contrast agent for the detection of brain gliomas in vivo. the hydrodynamic diameter of about 75 nm, saturation magnetization of 51 emu/g fe and t(2) relaxivity of 75.6 mm(-1)s(-1) of the lf-spions suggested its applicability for mri. ... | 2011 | 20970851 |
| mechanism of bone collagen degradation due to koh treatment. | the mechanisms underlying the effect of alterations in type i collagen on bone mechanical properties are not well defined. in a previous study, male and female emu tibiae were endocortically treated with 1m potassium hydroxide (koh) solution for 1-14days. this treatment resulted in negligible mass loss (0.5%), collagen loss (0.05%), no differences in geometrical parameters but significant changes in mechanical properties. the objective of this study was to determine the mechanism of collagen deg ... | 2010 | 20971160 |
| adsorption of acid dyes from aqueous solutions by the ethylenediamine-modified magnetic chitosan nanoparticles. | the adsorption characteristics of acid orange 7(ao7) and acid orange 10 (ao10) from aqueous solutions onto the ethylenediamine-modified magnetic chitosan nanoparticles (emcn) have been investigated. the emcn were essentially monodispersed and had a main particle size distribution of 15-40 nm and saturated magnetization of 25.6 emu/g. the adsorption experiments indicated that the maximum adsorption capacity occurred at ph 4.0 for ao7 and ph 3.0 for ao10, respectively. due to the small diameter an ... | 2011 | 21035264 |
| magnetic, luminescent eu-doped mg-al layered double hydroxide and its intercalation for ibuprofen. | a magnetic, luminescent eu-doped mg-al layered double hydroxide with ibuprofen (ibu) intercalated in the gallery has been successfully prepared by a simple coprecipitation method. the physicochemical properties of the samples were well characterized by powder xrd, tem, ftir, tga, inductively coupled plasma ms (icp-ms), vibrating sample magnetometry (vsm), and fluorospectrophotometry. the results revealed that fe(3)o(4) nanoparticles are coated on the surface of layered double hydroxides and the ... | 2010 | 21038324 |
| in-vivo and real-time measurement of magnetic-nanoparticles distribution in animals by scanning squid biosusceptometry for biomedicine study. | magnetic nano-particles have been widely applied to biomagneism, such as drug deliver, magnetic labeling and contrast agent for in-vivo image, etc. to localize the distribution of these magnetic particles in living organism is the first important issue to confirm the effects of magnetic nano-particles and also evaluate the possible untoward effects. in this work, a scanning high tc rf-squid superconducting quantum interference devices (squid) biosusceptometry, composed of static squid unit and s ... | 2010 | 21041154 |
| preparation and properties of hybrid monodispersed magnetic α-fe2o3 based chitosan nanocomposite film for industrial and biomedical applications. | in this study, hydrothermally prepared magnetic α-fe2o3 nanoparticles were dispersed in chitosan (ch) solution to fabricate nanocomposite film. x-ray diffraction (xrd) patterns indicated that the α-fe2o3 nanoparticles were pure α-fe2o3 with rhombohedral structures, and the fabrication of ch did not result in a phase change. the scanning electron microscopy (sem) and transmission electron microscope (tem) results showed that the hexagonal and spherical monodispersed α-fe2o3 nanoparticles were enc ... | 2011 | 21056054 |
| regulation of follicular b cell differentiation by the related e26 transformation-specific transcription factors pu.1, spi-b, and spi-c. | splenic b-2 cells can be divided into two major subsets: follicular (fo) and marginal zone (mz) b cells. fo and mz b cells are generated from immature transitional b cells. few transcription factors have been identified that regulate fo b cell differentiation. the highly related proteins pu.1, spi-b, and spi-c are transcription factors of the e26-transformation-specific family and are important for b cell differentiation and function. to determine whether these proteins play a role in the differ ... | 2010 | 21057087 |
| fracture surface analysis to understand the failure mechanisms of collagen degraded bone. | fracture surface analysis is a powerful technique to investigate bone failure mechanisms. previously, emu tibiae were endocortically treated with 1 m potassium hydroxide (koh) solution for 14 days. this treatment caused in situ collagen degradation rather than removal, with no differences in geometrical parameters, but with significant changes in mechanical properties. koh-treated tibiae showed significant decreases in failure stress and increased failure strain and toughness. the fracture surfa ... | 2011 | 21057831 |
| primary structure of potential allergenic proteins in emu ( dromaius novaehollandiae ) egg white. | the emu ( dromaius novaehollandiae ) egg is considered promising as an alternative egg product. to obtain basic biochemical information on emu egg white, the major protein compositions in emu and chicken egg whites and the primary structures of potential allergenic proteins were compared. the dominant protein in emu egg white was ovotransferrin (ovt), followed by ovalbumin (ova) and tenp protein. the ova and ovomucoid (ovm) levels in emu egg white were estimated as significantly lower than those ... | 2010 | 21058653 |
| surface molecular imprinting onto fluorescein-coated magnetic nanoparticles via reversible addition fragmentation chain transfer polymerization: a facile three-in-one system for recognition and separation of endocrine disrupting chemicals. | in this study, we present a general protocol for the making of surface-imprinted magnetic fluorescence beads via reversible addition-fragmentation chain transfer polymerization. the resulting composites were characterized by x-ray diffraction analysis, transmission electron microscopy, scanning electron microscopy, fluorescence spectroscopy, fourier transform infrared spectroscopy, and energy dispersive spectroscopy. the as-synthesized beads exhibited homogeneous polymer films (thickness of abou ... | 2011 | 21063623 |
| initial development of minnesota multiphasic personality inventory-2-restructured form (mmpi-2-rf) scales to identify patients with psychogenic nonepileptic seizures. | long term video-eeg (electroencephalography) monitoring in an epilepsy monitoring unit (emu) will remain the gold standard for differential diagnosis of epilepsy from psychogenic nonepileptic seizures. however, neuropsychologists are routinely part of the differential diagnosis team and utilize personality assessment measures to add supportive data for the diagnosis. the most accurate scale on the minnesota multiphasic personality inventory-2-restructured form (mmpi-2-rf) in terms of differentia ... | 2011 | 21069613 |
| magnetic microparticles based on natural polymers. | magnetic micro- and nanoparticles based on ferrofluid (maghemite) were elaborated by inverse emulsion crosslinking of sodium salt of carboxymethylcellulose (cmcna) and gelatin. crosslinking was carried out with glutaric aldehyde within aqueous droplets dispersed into toluene in presence of surfactants. the influence of parameters such as the ratio of polymers and maghemite in the initial mixture on the composition, size, size dispersity, particle swelling and their ability for drug inclusion was ... | 2010 | 21075184 |
| [preparation of immunomagnetic nanoparticles for tumor targeting therapy with herceptin]. | to prepare immunomagnetic nanoparticles (imns) for her2/neu-targeted radioimmunotherapy with herceptin, a humanized anti-p185-her-2/neu monoclonal antibody targeting the extracellular domain of her-2/neu receptor. | 2010 | 21097428 |
| silencing of the inhibitor of dna binding protein 4 (id4) contributes to the pathogenesis of mouse and human cll. | inhibitor of dna binding protein 4 (id4) is a member of the dominant-negative basic helix-loop-helix transcription factor family that lacks dna binding activity and has tumor suppressor function. id4 promoter methylation has been reported in acute myeloid leukemia and chronic lymphocytic leukemia (cll), although the expression, function, and clinical relevance of this gene have not been characterized in either disease. we demonstrate that the promoter of id4 is consistently methylated to various ... | 2010 | 21098398 |
| morphology of the tongue of the emu (dromaius novaehollandiae). i. gross anatomical features and topography. | despite numerous papers addressing the topic, the gross morphology of the ratite tongue and more specifically that of the emu, has been superficially or poorly described. this paper presents the first definitive macroscopic description of the emu tongue and reviews, consolidates and compares the scattered information on the gross morphology of the ratite tongue available in the literature. twenty-three heads obtained from birds at slaughter were used for this study. specimens were fixed in 10 % ... | 2009 | 21105602 |
| macroscopic anatomy of the reproductive tract of the reproductively quiescent female emu (dromaius novaehollandiae). | three reproductively quiescent female emus (dromaius novaehollandiae) were embalmed with 10% formalin solution. the reproductive tract was dissected and described. the reproductive tract consists of an ovary and oviduct situated on the left side of the abdominal cavity. the left ovary is dark brown to black in colour with follicles covering the ventral surface. the ovary is located medial to the spleen and closely associated with the ventral surface of the cranial and middle lobes of the left ki ... | 2011 | 21108655 |
| ferromagnetism driven by oxygen vacancies in sno2 nanowires. | room temperature ferromagnetism has been observed in sno2 nanowires synthesized by a chemical vapor deposition using au layers as catalyst. the nanowires are homogeneous and single-crystalline grown along the [101] direction, with diameters ranging from 25 to 100 nm and length greater than 20 microm. the special magnetization reaches 0.114 emu/g for the nanowires with diameter of approximately 25 nm and reduces with increasing diameters. branched sno2 nanowires were prepared via a two-step vapor ... | 2010 | 21125831 |
| multiferroic bifeo3 thin films for multifunctional devices. | we report the metalorganic chemical vapor deposition of crystalline bifeo3 films on platinized silicon substrates using n-butylferrocene, triphenylbismuth and oxygen. based on thermogravimetric analysis data, the suitability of these two precursors for depositing bifeo3 is discussed. the deposited films were characterized for structure and morphology using x-ray diffraction and scanning electron microscopy. composition analysis using x-ray photoelectron spectroscopy revealed that the films were ... | 2010 | 21133173 |
| one-pot reaction to synthesize peg-coated hollow magnetite nanostructures with excellent magnetic properties. | we first demonstrate a simple "one-pot" method to synthesis uniform fe3o4 hollow microspheres in the presence of peg in ethylene glycol by using urea to control their morphologies. the interior cavity of the hollow spheres can be tunable by reaction time. the lamer model was used to explain the formation of magnetite hollow spherical structures based on the experimental observations. the obtained hollow fe3o4 microspheres showing superparamagnetism with a high saturation magnetization of ca. 86. ... | 2010 | 21137737 |
| aerosol-assisted synthesis of thiol-functionalized mesoporous silica spheres with fe3o4 nanoparticles. | thiol-functionalized mesoporous silica spheres having fe3o4 nanoparticles are fabricated in one-pot by aerosol-assisted synthesis. a tem image shows that fe3o4 nanoparticles are successfully embedded within the mesoporous silica spheres. sem images and saxs profiles reveals that the encapsulating fe3o4 nanoparticles do not affect the ordering of a mesoporous structure. the spherical morphologies are also well retained. the presence of cage-type mesopores with uniform size is confirmed by n2 adso ... | 2010 | 21137770 |
| structural and magnetic properties of tizrni thin films prepared by magnetron sputtering and thermal annealing. | distinctive thin layers of tizr and ni were deposited by using a magnetron sputtering method and a thermal annealing was applied to discover metallic films of quasicrystals. after a heat treatment in vacuum, 70 nm thick deposited layers were well mixed with nominal compositions of 49.7, 29.3 and 21.0 for ti, zr and ni, respectively, which is very close with the one forming a quasicrystalline phase. the magnetization values were significantly decreased from 0.286 to 0.142 emu/mm3 at 2000 oe, afte ... | 2010 | 21138037 |
| toward an automatic method for extracting cancer- and other disease-related point mutations from the biomedical literature. | a major goal of biomedical research in personalized medicine is to find relationships between mutations and their corresponding disease phenotypes. however, most of the disease-related mutational data are currently buried in the biomedical literature in textual form and lack the necessary structure to allow easy retrieval and visualization. we introduce a high-throughput computational method for the identification of relevant disease mutations in pubmed abstracts applied to prostate (pca) and br ... | 2011 | 21138947 |
| preparation, characterization, and application of magnetic fe-sba-15 mesoporous silica molecular sieves. | magnetic fe-sba-15 mesoporous silica molecular sieves were prepared, characterized, and used for magnetic separation. wet impregnation, drying, and calcination steps led to iron inclusion within the mesopores. iron oxide was reduced to the metal form with hydrogen, and the magnetic fe-sba-15 was obtained. fourier-transform infrared spectroscopy confirmed the preparation process from the oxide to metal forms. the structure of magnetic materials was confirmed by mössbauer spectra. powder x-ray dif ... | 2010 | 21151665 |
| novel genetic environment of the plasmid-mediated kpc-3 gene detected in escherichia coli and citrobacter freundii isolates from china. | the imipenem and meropenem-resistant strains citrobacter freundii hs70 and escherichia coli hs510 were isolated from patients in shanghai, china. by isoelectric focusing, pcr amplification and sequencing, these strains were each found to produce four β-lactamases: tem-1, kpc-3, shv-7 and ctx-m-14. a conjugation experiment and plasmid restriction digestion revealed that the bla (kpc-3) gene was located on the same plasmid in both isolates. bidirectional primer walking sequencing showed that the n ... | 2010 | 21153909 |
| minimizing influence of multi-modes and dispersion of electromagnetic ultrasonic lamb waves. | electromagnetic ultrasonic (emu) lamb waves excited by electromagnetic acoustic transducers (emats) possess many advantages in ndt. however, their characteristic multi-modes and dispersion are disadvantageous for inspection and restrict further improvements in their real applications. by deducing the excitation equation of emu lamb waves, the primary design parameters of emats and the characteristic equation of lamb waves are combined, and excitation curves based on the excitation equation are p ... | 2010 | 21156368 |
| microwave-enhanced synthesis of magnetic porous covalent triazine-based framework composites for fast separation of organic dye from aqueous solution. | a novel type of magnetic porous carbonaceous polymeric material, ctf/fe(2)o(3) composite (ctf = covalent triazine-based framework), has been synthesized by a facile microwave-enhanced high-temperature ionothermal method. by selecting zncl(2) as a reaction medium and the lewis acid catalyst, and choosing fecl(3)·6h(2)o as an iron oxide precursor, a series of ctf/fe(2)o(3) composites with different γ-fe(2)o(3) contents has been prepared in 60 min. the resulting samples were characterized by the x- ... | 2011 | 21159428 |
| clinically significant bradyarrhythmias in video-eeg patients. | the prevalence of patients thought to have epilepsy who are ultimately diagnosed with asystole or bradyarrhythmias not associated with seizures is currently unknown. we studied a tertiary referral population to determine the rate of clinically significant asystole or bradyarrhythmias in patients being evaluated for possible epilepsy in 2 inpatient epilepsy monitoring units (emu). | 2011 | 21167749 |
| synthesis and characterization of enzyme-magnetic nanoparticle complexes: effect of size on activity and recovery. | the influence of particle size on the activity and recycling capabilities of enzyme conjugated magnetic nanoparticles was studied. co-precipitation and oxidation of fe(oh)(2) methods were used to fabricate three different sizes of magnetic nanoparticles (5 nm, 26 nm and 51 nm). glucose oxidase was covalently bound to the magnetic nanoparticles by modifying the surfaces with 3-(aminopropyl)triethoxysilane (aptes) and a common protein crosslinking agent, glutaraldehyde. analysis by transmission el ... | 2010 | 21176875 |
| embryonic development of the emu, dromaius novaehollandiae. | the chick, gallus gallus, is the traditional model in avian developmental studies. data on other bird species are scarce. here, we present a comparative study of the embryonic development of the chick and the emu dromaius novaehollandiae, a member of paleognathae, which also includes the ostrich, rhea, tinamou, kiwi, and cassowary. emu embryos ranging from hamburger and hamilton (hh) equivalent stages 1 to 43 were collected and their gross morphology analyzed. its early development was studied i ... | 2011 | 21181941 |
| incidence, structure and morphological classification of abnormal sperm in the emu (dromaius novaehollandiae). | little detailed information is currently available on the incidence and morphological characteristics of abnormal sperm in the emu (dromaius novaehollandiae) and of ratites in general. this situation is further compounded by the lack of a uniform system for the morphological classification of avian sperm defects. considering the important role that sperm morphology plays in the assessment of semen quality, a detailed description of avian sperm defects is of paramount importance. based on morphol ... | 2010 | 21190730 |
| gaseous elemental mercury capture from flue gas using magnetic nanosized (fe3-xmnx)1-δo4. | a series of nanosized (fe3-xmnx)1-δo4 (x = 0, 0.2, 0.5, and 0.8) were synthesized for elemental mercury capture from the flue gas. cation vacancies on (fe3-xmnx)1-δo4 can provide the active sites for elemental mercury adsorption, and mn(4+) cations on (fe3-xmnx)1-δo4 may be the oxidizing agents for elemental mercury oxidization. with the increase of mn content in the spinel structure, the percents of mn(4+) cations and cation vacancies on the surface increased. as a result, elemental mercury cap ... | 2011 | 21207939 |
| synthesis of biocompatible, mesoporous fe(3)o(4) nano/microspheres with large surface area for magnetic resonance imaging and therapeutic applications. | this article reports the fabrication of mesoporous fe(3)o(4) nano/microspheres with a high surface area value (163 m(2)/g, brunauer-emmett-teller) and demonstrates their use for drug loading, release, and magnetic resonance imaging (mri). these monodispersed, mesoporous fe(3)o(4) nano/microspheres with controllable average sizes ranging from 50 to 200 nm were synthesized using a fe(3)o(4)/poly(acrylic acid) hybrid sphere template and subsequent silica shell formation and removal. we found that t ... | 2011 | 21229966 |
| search for r-parity violating decays of sneutrinos to eμ, μτ, and eτ pairs in pp collisions at square root s = 1.96 tev. | we present a search for supersymmetric neutrino ν production using the tevatron pp collision data collected with the cdf ii detector and corresponding to an integrated luminosity of 1 fb-1. we focus on the scenarios predicted by the r-parity violating (rpv) supersymmetric models in which sneutrinos decay to two charged leptons of different flavor. with the data consistent with the standard model expectations, we set upper limits on σ(pp→ν)×br(ν→eμ,μτ,eτ) and use these results to constrain the rp ... | 2010 | 21231160 |
| search for sneutrino production in eμ final states in 5.3 fb-1 of pp collisions at square root s =1.96 tev. | we report the results of a search for r parity violating (rpv) interactions leading to the production of supersymmetric sneutrinos decaying into eμ final states using 5.3 fb-1 of integrated luminosity collected by the d0 experiment at the fermilab tevatron collider. having observed no evidence for production of eμ resonances, we set direct bounds on the rpv couplings λ311' and λ312 as a function of sneutrino mass. | 2010 | 21231161 |
| characterization of magnetic soluble starch-functionalized carbon nanotubes and its application for the adsorption of the dyes. | soluble starch-functionalized multiwall carbon nanotube composites (mwcnt-starch) were prepared to improve the hydrophilicity and biocompatibility of mwcnts. characterization of the mwcnt-starch by fourier transform infrared (ftir) spectroscopy, ultraviolet-visible (uv-vis) spectroscopy, x-ray diffraction (xrd), transmission electron microscope (tem) and thermogravimetric analysis (tg), showed that the starch component (about 14.3 wt%) was covalently grafted onto the surface of mwcnt. mwcnt-star ... | 2011 | 21255925 |
| cryoinsult parameter effects on the histologically apparent volume of experimentally induced osteonecrotic lesions. | investigation of femoral head osteonecrosis would benefit from an animal model whose natural history includes progression to bony collapse of a segmental necrotic lesion. the bipedal emu holds attraction for systematic organ-level study of collapse mechanopathology. one established method of experimentally inducing segmental lesions is liquid nitrogen cryoinsult. four cryoinsult parameters-hold temperature, freeze duration, freeze/thaw repetition, and thaw duration-were investigated to determine ... | 2011 | 21259339 |
| room-temperature ferromagnetism in graphitic petal arrays. | we report room-temperature ferromagnetism of graphitic petal arrays grown on si substrates by microwave plasma chemical vapor deposition without catalyst. the samples have been characterized by raman and x-ray photoelectron spectroscopy to confirm the absence of possible ferromagnetic impurities. the petals exhibit ferromagnetic hysteresis with saturation magnetization of ∼4.67 emu cm(-3) and coercivity of ∼105 oe at 300 k, comparable to the reported behavior of few-layer graphene. upon o2 annea ... | 2011 | 21264436 |
| photoluminescent fe3o4/carbon nanocomposite with magnetic property. | fe(3)o(4)/carbon nanocomposite has been prepared by a facile chemical method, and characterized by x-ray diffraction, x-ray photoelectron spectroscopy, transmission electron microscopy, fourier transform infrared spectroscopy and scanning electron microscopy. the fluorescent and magnetic properties of the sample were investigated by fluorescence spectroscopy and vibrating-sample magnetometer, respectively. the results indicate that the fe(3)o(4)/carbon nanocomposite exhibit good photoluminescent ... | 2011 | 21269640 |
| development of high field squid magnetometer for magnetization studies up to 7 t and temperatures in the range from 4.2 to 300 k. | we present the design, fabrication, integration, testing, and calibration of a high field superconducting quantum interference device (squid) magnetometer. the system is based on dc squid sensor with flux locked loop readout electronics. the design is modular and all the subsystems have been fabricated in the form of separate modules in order to simplify the assembly and for ease of maintenance. a novel feature of the system is that the current induced in the pickup loop is distributed as inputs ... | 2011 | 21280860 |
| sperm competition selects for sperm quantity and quality in the australian maluridae. | when ejaculates from rival males compete for fertilization, there is strong selection for sperm traits that enhance fertilization success. sperm quantity is one such trait, and numerous studies have demonstrated a positive association between sperm competition and both testes size and the number of sperm available for copulations. sperm competition is also thought to favor increases in sperm quality and changes in testicular morphology that lead to increased sperm production. however, in contras ... | 2011 | 21283577 |
| the morphology of neoptile feathers: ancestral state reconstruction and its phylogenetic implications. | avian neoptile feathers are defined as the first feather generation, which covers the chick after hatching, and usually described as simple structures consisting of numerous downy barbs which are radially symmetrically arranged and come together in a short calamus. in contrast, in some birds (e.g., anas platyrhynchos, dromaius novaehollandiae) the neoptile feathers have a prominent rhachis, and therefore display clear bilateral symmetry. because the symmetrical variety found in neoptile feathers ... | 2011 | 21290415 |
| co-encapsulation of magnetic nanoparticles and doxorubicin into biodegradable microcarriers for deep tissue targeting by vascular mri navigation. | magnetic tumor targeting with external magnets is a promising method to increase the delivery of cytotoxic agents to tumor cells while reducing side effects. however, this approach suffers from intrinsic limitations, such as the inability to target areas within deep tissues, due mainly to a strong decrease of the magnetic field magnitude away from the magnets. magnetic resonance navigation (mrn) involving the endovascular steering of therapeutic magnetic microcarriers (tmmc) represents a clinica ... | 2011 | 21315445 |
| construction of an e. coli genome-scale atom mapping model for mfa calculations. | metabolic flux analysis (mfa) has so far been restricted to lumped networks lacking many important pathways, partly due to the difficulty in automatically generating isotope mapping matrices for genome-scale metabolic networks. here we introduce a procedure that uses a compound matching algorithm based on the graph theoretical concept of pattern recognition along with relevant reaction information to automatically generate genome-scale atom mappings which trace the path of atoms from reactants t ... | 2011 | 21328316 |
| polymer nanocomposites exhibiting magnetically tunable microwave properties. | polymer nanocomposites (pncs) have been synthesized using rogers polymer and cofe₂o₄ nanoparticles (cfo nps). x-ray diffraction (xrd) confirms the inverse spinel crystal structure of cfo nps and transmission electron microscopy (tem) images show the uniform dispersion of nanoparticles (10 nm ± 1) into the polymer matrix. magnetic measurements indicate superparamagnetic response near room temperature for all pncs. a blocking temperature t(b)~298 k was observed and does not vary for different load ... | 2011 | 21343635 |
| morphology of the tongue of the emu (dromaius novaehollandiae). ii. histological features. | although a number of brief, fragmented descriptions have been provided on the gross morphology of the ratite tongue, very few studies have documented the histological structure of this organ. this paper presents the first definitive histological description of the emu tongue and reviews, consolidates and compares the scattered information on the histology of the ratite tongue available in the literature. five tongues were removed from heads obtained from birds at slaughter and fixed in 10% neutr ... | 2009 | 21344785 |
| magnetic and structural properties of magnetite in radular teeth of chiton acanthochiton rubrolinestus. | the teeth of the polyplacophora chiton acanthochiton rubrolinestus contain biomineralized magnetite crystallites whose biological functions in relation to structure and magnetic properties are not well understood. here, using superconducting quantum interference device (squid) magnetometry, we find that the saturation magnetization (σ(s)) and the verwey transition temperature (t(v)) of tooth particles are 78.4 emu/g and 105 k, respectively. these values are below those of the stoichiometric magn ... | 2011 | 21365666 |
| synthesis of cu1.8s and cus from copper-thiourea containing precursors; anionic (cl(-), no3(-), so4(2-)) influence on the product stoichiometry. | a novel and unique understanding pertaining to the synthesis of cu(1.8)s and cus in bulk was achieved from the analysis of the products of the cu-tu precursors, with cl(-), no(3)(-), and so(4)(2-) as the counteranions, in ethylene glycol. [cu(4)(tu)(9)](no(3))(4)·4h(2)o always yielded cus whether the dissociation was carried out in ethylene glycol in the presence of air or argon or under solvothermal conditions. cu(1.8)s was the only product when [cu(tu)(3)]cl was dissociated in air as well as i ... | 2011 | 21370879 |
| water-soluble magnetic coo nanocrystals functionalized with surfactants as t2-weighed mri contrast agents in vitro. | coo nanocrystals (coo ncs) were synthesized by thermal decomposition of the cobalt-oleate complex. for biological applications, water-soluble coo ncs were obtained via a facile phase-transfer method by employing amphiphilic surfactants, such as anionic (sodium dodecyl sulfate, sds), neutral (pluronic f127, pf127) and cationic (cetyltrimethyl ammonium bromide, ctab). field-dependent magnetization measurements indicated that the type of surfactants around the coo ncs plays a crucial role in their ... | 2011 | 21380411 |
| characterization and magnetic properties of a "super stable" radical 1,3-diphenyl-7-trifluoromethyl-1,4-dihydro-1,2,4-benzotriazin-4-yl. | 1,3-diphenyl-7-trifluoromethyl-1,4-dihydro-1,2,4-benzotriazin-4-yl (4), prepared in high yield via the catalytic oxidation of the corresponding amidrazone 5 by using pd/c (1.6 mol %) and 1,8-diazabicyclo[5.4.0]undec-7-ene (0.1 equiv) in air, is stable in dichloromethane solutions in the presence of mno(2) and kmno(4). furthermore, radical 4 is thermally stable well past its melting point (160-161 °c) with a decomposition onset temperature of 288 °c. x-ray studies show that radical 4 packs in equ ... | 2011 | 21384906 |
| apoptosis is the essential target of selective pressure against p53, whereas loss of additional p53 functions facilitates carcinoma progression. | the high frequency of p53 mutation in human cancers indicates the important role of p53 in suppressing tumorigenesis. it is well established that the p53 regulates multiple, distinct cellular functions such as cell-cycle arrest and apoptosis. despite intensive studies, little is known about which function is essential, or if multiple pathways are required, for p53-dependent tumor suppression in vivo. using a mouse brain carcinoma model that shows high selective pressure for p53 inactivation, we ... | 2011 | 21385880 |
| unusual magnetism in templated nis nanoparticles. | nanostructured nis was prepared by inclusion into anodic alumina templates. the resultant particles were found to be stoichiometric and highly crystalline. the particles displayed small particle superparamagnetism, and a low temperature (at 48 k (t(sg))) spin-freezing phenomenon (a spin-glass) and higher temperature (170 k) thermal blocking of small particle magnetic moment fluctuations were both observed for the first time for a sulfide material. very unusually, these nis materials are quite di ... | 2010 | 21386398 |
| strong magnetism observed in carbon nanoparticles produced by the laser vaporization of a carbon pellet in hydrogen-containing ar balance gas. | nanometer-scale carbon particles driven by the pulsed-laser vaporization of pelletized pure carbon powder at 1000 °c in a hydrogen-containing environment show anomalous magnetism like a superparamagnet, while the sample prepared in 100% of ar does not show such magnetism. the observed magnetism was unchanged over months in the ambient. the structure of this nanomaterial resembles the foam of a laundry detergent and transmission electron microscopy indicates a clear corrugated line contrast. on t ... | 2010 | 21386499 |
| self-assembled 3d flowerlike hierarchical fe3o4@bi2o3 core-shell architectures and their enhanced photocatalytic activity under visible light. | three-dimensional (3d) flowerlike hierarchical fe(3)o(4)@bi(2)o(3) core-shell architectures were synthesized by a simple and direct solvothermal route without any linker shell. the results indicated that the size of the 3d flowerlike hierarchical microspheres was about 420 nm and the shell was composed of several nanosheets with a thickness of 4-10 nm and a width of 100-140 nm. the saturation magnetization of the superparamagnetic composite microspheres was about 41 emu g(-1) at room temperature ... | 2011 | 21387420 |
| dynamic evolution of base composition: causes and consequences in avian phylogenomics. | resolving the phylogenetic relationships among birds is a classical problem in systematics, and this is particularly so when it comes to understanding the relationships among neoaves. previous phylogenetic inference of birds has been limited to mitochondrial genomes or a few nuclear genes. here, we apply deep brain transcriptome sequencing of nine bird species (several passerines, hummingbirds, dove, parrot, and emu), using next-generation sequencing technology to understand features of transcri ... | 2011 | 21393604 |
| experimental evidence for ferromagnetism at room temperature in mgo thin films. | ferromagnetic ordering at room temperature (rtfm) in mgo thin films deposited by rf magnetron sputtering under various atmospheric conditions and temperatures is reported. a saturation magnetization (m(s)) value as high as 1.58 emu g(-1) is (0.046 μb/unit cell) observed for a 170 nm film deposited at rt under an oxygen pressure of 1.3 × 10(-4) mbar. in contrast, films deposited at elevated temperature (under an identical oxygen pressure), or at higher oxygen pressures, as well as under a nitroge ... | 2010 | 21403248 |
| magnetic poly(lactide-co-glycolide) and cellulose particles for mri-based cell tracking. | biodegradable, superparamagnetic microparticles and nanoparticles of poly(lactide-co-glycolide) (plga) and cellulose were designed, fabricated, and characterized for magnetic cell labeling. monodisperse nanocrystals of magnetite were incorporated into microparticles and nanoparticles of plga and cellulose with high efficiency using an oil-in-water single emulsion technique. superparamagnetic cores had high magnetization (72.1 emu/g). the resulting polymeric particles had smooth surface morpholog ... | 2011 | 21404328 |
| structural and magnetic properties of pure and nickel doped sno2 nanoparticles. | ni-doped sno2 nanoparticles prepared by a polymer precursor method have been characterized structurally and magnetically. ni doping (up to 10 mol%) does not significantly affect the crystalline structure of sno2, but stabilizes smaller particles as the ni content is increased. a notable solid solution regime up to ∼ 3 mol% of ni, and a ni surface enrichment for the higher ni contents are found. the room temperature ferromagnetism with saturation magnetization (ms) ∼ 1.2 × 10 (- 3) emu g (- 1) an ... | 2010 | 21406789 |
| in vitro cell uptake of biocompatible magnetite/chitosan nanoparticles with high magnetization: a single-step synthesis approach for in-situ-modified magnetite by amino groups of chitosan. | current attempts for synthesizing chitosan-modified magnetite nanoparticles (cs-mnps) as drug carrier involve use of surfactants, which brings potential cytotoxicity and decrease of saturated magnetization (ms). to address this, we developed a facile single-step method for synthesizing cs-mnps. the developed method offers several advantages. no surfactant was involved and the magnetite nanoparticles were in-situ-coated with a chitosan (cs) layer, which endows the cs-mnps with enhanced physical a ... | 2012 | 21418750 |
| preparation of fe3o4@ag sers substrate and its application in environmental cr(vi) analysis. | a novel sensitive and recyclable sers substrate which can actively concentrate chromate (cr(vi)) in water and substantially enhance raman signal was synthesized as uniform fe(3)o(4)@ag nanoparticles. the surface morphology, structure, and magnetic properties were characterized using transmission electron microscopy, atomic force microscopy, x-ray powder diffraction, x-ray photoelectron spectroscopy, and vibrating sample magnetometry analysis. the closely spaced fe(3)o(4)@ag substrate with a core ... | 2011 | 21421215 |
| reduction of hexavalent chromium by pannonibacter phragmitetus lsse-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions. | a novel cell separation and immobilization method for cr (vi)-reduction under alkaline conditions was developed by using superparamagnetic fe(3)o(4) nanoparticles (nps). the fe(3)o(4) nps were synthesized by coprecipitation followed by modification with sodium citrate and polyethyleneimine (pei). the surface-modified nps were monodispersed and the particle size was about 15 nm with a saturation magnetization of 62.3 emu/g and an isoelectric point (pi) of 11.5 at room temperature. pei-modified fe ... | 2011 | 21440990 |
| indeterminate emu admissions: does repeating the admission help? | epilepsy monitoring unit (emu) admissions during 2007-2009 at mayo clinic hospital arizona were reviewed. of the 106 indeterminate admissions, 13 (12%) went on to have a second admission. during the second admission, 8 (62%) were diagnosed. five patients went on to have a third or fourth admission, with none of them receiving a diagnosis. nineteen (18%) patients had ambulatory eeg monitoring after an indeterminate admission, with only one (5%) receiving a diagnosis after ambulatory eeg monitorin ... | 2011 | 21441070 |
| the effect of thickness on the texture and magnetic properties of single-layered fept films by rapid thermal annealing. | the single-layered fept films with thickness in the range of 5 to 50 nm are deposited directly on si(100) substrate without underlayer, then post annealed at 700 degrees c by rapid thermal annealing (rta) technique. as the film thickness of fept is over 20 nm, the l1(0) fept(111) preferred orientation is presented and tended to in-plane magnetic anisotropy. however, the l1(0) fept(001) texture is obtained and exhibited perpendicular magnetic anisotropy as the film thickness is decreased to 10 nm ... | 2011 | 21449440 |
| structural and magnetic properties of zno nanocrystals in (zn, al)o films using pulse laser deposition. | in this manuscript, we reported that the room temperature ferromagnetism was observed in (zn0.70, al0.30)o film, which was fabricated by a novel physical method (pulse laser deposition (pld)). the film was deposited from (zn0.80, al0.20)o ceramic target onto quartz (110) substrate by pld at 400 degrees c under an oxygen partial pressure of 10(-4) torr. tem result shows zno ncs with diameter of 4-5 nm and they are quite uniformly embedded into amorphous zno-al2o3 phase. the saed shows clearly tha ... | 2011 | 21449441 |
| fetac magnetic soft underlayer for l1(0) fept based perpendicular recording media. | fetac magnetic soft underlayer under elevated temperature process conditions for l1(0) fept based perpendicular recording media has been investigated. after annealing fetac for 40 min at 350 degrees c, saturation moment increases to 750 emu/cm3 and, coercivity and remanent moment reduce to 2.3 oe and 166 emu/cm3 respectively. the microstructure of fetac annealed at 350 degrees c for 40 min composes of fe nanocrystals with random orientations immersed in an amorphous matrix. fetac surface roughne ... | 2011 | 21449450 |
| low-rate sputter-deposited fe3si thin films on si substrates: structural and ferromagnetic properties. | fe3si thin films were sputter-deposited on si(001) substrates. structural investigations show that fe3si was deposited poly-crystalline with a si-containing layer at the fe3si/si interface. the formation of the layer was attributed to the influence of low deposition rates used in this study on the grain nucleation in fe3si. this layer helps to stabilize the ferromagnetic properties of the subsequent annealed films at 350 degrees c with 5 oe obtained for coercive field h(c), approximately 920 emu ... | 2011 | 21449455 |
| room temperature ferromagnetism in co-incorporated tio2 thin films. | observation of room temperature ferromagnetism (rtfm) in nano-crystalline co-incorporated titanium dioxide [ti(1-x)co(x)o2(x = 0.05)] thin films prepared by spray pyrolysis technique is reported. while only the anatase phase was detected in as-deposited 5 at.% co-incorporated tio2 film, a small amount of rutile phase developed following its vacuum annealing. besides, no x-ray diffraction peak corresponding to cobalt metal could be detected in any of the two films. squid magnetometry of both pris ... | 2011 | 21449467 |
| facile synthesis of monodisperse superparamagnetic fe3o4/pmma composite nanospheres with high magnetization. | monodisperse superparamagnetic fe(3)o(4)/polymethyl methacrylate (pmma) composite nanospheres with high saturation magnetization were successfully prepared by a facile novel miniemulsion polymerization method. the ferrofluid, mma monomer and surfactants were co-sonicated and emulsified to form stable miniemulsion for polymerization. the samples were characterized by dls, tem, ftir, xrd, tga and vsm. the diameter of the fe(3)o(4)/pmma composite nanospheres by dls was close to 90 nm with correspon ... | 2011 | 21454944 |