| [phenologic observations of the rabka health resort in 1990]. | important factors decisive of the health resort's climatic characteristics are the results of aero-phenologic studies. these results take in account the different pollinating seasons of various plants, grasses and weeds. quantification and qualification of air pollination using the volume method with a burkhard analytical device. basing on results the authors have found increasing pollination string from march. at his time the main pollens come from birch, hazel, alder, weeping willow. the conce ... | 1992 | 1493517 |
| morphological characteristics and terminating patterns of masseteric neurons of the mesencephalic trigeminal nucleus in the rat: an intracellular horseradish peroxidase labeling study. | in order to study the morphological characteristics and terminating patterns of the neurons of the trigeminal mesencephalic nucleus (vme), 55 masseteric neurons in vme in the rat were stained by intracellular injection of horseradish peroxidase (hrp). labeled cells were distributed throughout the nucleus. these neurons were divided into three types: uni- or pseudounipolar (type a, n = 43), bipolar (type b, n = 5), and multipolar cells (type c, n = 7). each type was further divided into two subty ... | 1991 | 2013641 |
| [a case of renal hemangiopericytoma]. | the patient is a 33-year-old female. on precontrast ct, the tumor shows a high density area with a low density area. on postcontrast ct, the tumor demonstrates a well-marginated low density area. angiographically, the tumor shows a hypervascular mass with tumor vessels like a weeping willow and unhomogeneous stain. this is only the fourth such case ever reported before in japan. | 1990 | 2232289 |
| [a case of idiopathic portal hypertension with "weeping willow" like appearance of intrahepatic bile ducts]. | | 1990 | 2325305 |
| menkes disease: a golgi and electron microscopic study of the cerebellar cortex. | a neuropathological study of a case of menkes disease is reported, illustrating the involvement of different types of neuronal cells. the cerebellum showed the most striking abnormalities: severe lack of internal granule cells. purkinje cells with weeping willow pattern, numerous segmental enlargements of dendritic trunks and secondary branches, and presence of numerous eosinphilic spherical bodies in the molecular layer were the most conspicuous features. using electron microscopy, the dendriti ... | 1988 | 3390973 |
| abnormalities of purkinje cell arborization in brindled mouse cerebellum. a golgi study. | the cerebellum of the hemizygous brindled mouse (mobr/y), a murine model of kinky hair disease (khd) in human beings, was investigated chronologically using the golgi technique. in 15-day-old mobr/y, purkinje cells showed considerable changes in their arborization such as perisomatic dendrite-like processes, numerous spine-like protrusions from somata and stem dendrites, focal swellings of stem and distal dendrites and generally poor development of dendritic trees. these changes closely resemble ... | 1985 | 4038413 |
| the htp weeping willow and personality traits. | | 1974 | 4592840 |
| hepatic venography in noncirrhotic idiopathic portal hypertension. comparison with cirrhosis of the liver. | free and wedged hepatic venography were carried out in 37 patients with idiopathic portal hypertension (iph) and the findings compared with those in 88 patients with cirrhosis of the liver. characteristic changes in iph included frequent vein-to-vein anastomoses, narrower angles between large veins and their tributaries, smooth and wavy middle-sized to large branches (giving a general "weeping willow" appearance), homogeneous sinusoidal filling, and minimal to absent filling of the portal venous ... | 1981 | 7291551 |
| [menkes' disease: anatomo-clinical presentation of a case]. | we describe a case of menke's disease with severe neurological involvement, convulsive crises and characteristic hair anomalies (scanty, fragile, macroscopically hypopigmented and microscopically kinked) which led to rapid diagnosis. vascular abnormalities with elongated, twisted arteries, skeletal abnormalities (more wormian cranial bones than usual, lateral spurs of metaphyses) and vesicle diverticuli. electron microscopy of skeletal muscle showed concentrically laminated bodies, possibly of m ... | 1997 | 9147788 |
| the absence of phloem loading in willow leaves. | willow (salix babylonica l.) is representative of a large group of plants that have extensive plasmodesmatal connections between minor vein phloem and adjoining cells. because plasmodesmata provide a diffusion pathway for small molecules, it is unclear how sucrose could be loaded from the mesophyll into the phloem against a concentration gradient. in the studies reported here, the minor vein phloem of willow leaves plasmolyzed in approximately the same concentration of osmoticum as the mesophyll ... | 1998 | 9751789 |
| rocker is a new variant of the voltage-dependent calcium channel gene cacna1a. | rocker (gene symbol rkr), a new neurological mutant phenotype, was found in descendents of a chemically mutagenized male mouse. mutant mice display an ataxic, unstable gait accompanied by an intention tremor, typical of cerebellar dysfunction. these mice are fertile and appear to have a normal life span. segregation analysis reveals rocker to be an autosomal recessive trait. the overall cytoarchitecture of the young adult brain appears normal, including its gross cerebellar morphology. golgi-cox ... | 2001 | 11160387 |
| a study of metal distribution from lignite fuels using trees as biological monitors. | concentrations of five metals (cd, cu, mn, fe, zn) were determined in tree leaves collected from an area with large coal-fired plants in ptolemais, macedonia, greece. the analyses were carried out with flame atomic absorption spectroscopy. mean heavy metal content in the tree leaves is, in descending order, fe>mn>zn>cu>cd. in populus nigra and salix babylonica the dense piled leaves and the widespread root system are the reasons for high heavy metal uptake. conifer trees pinus nigra and juniperu ... | 2001 | 11161674 |
| phytoremediation potential of willow trees for aquifers contaminated with ethanol-blended gasoline. | ethanol-blended gasoline has been used in brazil for 20 years and, probably, is going to be more widely used in north america due to the mtbe environmental effects on groundwater. the potential impacts caused by the presence of ethanol in ust spills are related to the co-solvency effect and the preferential degradation of ethanol over the btex compounds. these interactions may increase the length of dissolved hydrocarbon plumes and the costs associated with site remediation. this study investiga ... | 2001 | 11471702 |
| ntzip antisense plants show reduced chlorophyll levels. | we have isolated and characterized a new photosynthetic tissue-specific gene ntzip (nicotiana tabacum leucine zipper) from tobacco (n. tabacum). its deduced amino acid sequence has two highly conserved regions, leucine zipper and [ex(n)dexrh](2) motifs, which are related to the gene's biochemical functions. ntzip was expressed in leaves and stems, but was not detected in roots or flowers, suggesting that its physiological functions might be associated with photosynthesis. northern blot analysis ... | 2004 | 15120117 |
| [repellent and antifeedant effect of secondary metabolites of non-host plants on plutella xylostella]. | based on the theory of co-evolution between plants and phytophagous insects, the repellent and antifeedant effect of secondary metabolites of non-host plants on diamondback moth(dbm) plutella xylostella was studied, aimed at finding out the oviposition repellents and antifeedants of insect pests. when the ethanol extracts(etho exts) of bauhinia variegata, eucalyptus tereticornis, euphorbia hirta, duranta repens, zanthoxylum bungeanum, magnolia grandiflora, and nicotiana tabacum were applied resp ... | 2004 | 15228000 |
| the effect of temperature on the rate of cyanide metabolism of two woody plants. | the response of cyanide metabolism rates of two woody plants to changes in temperature is investigated. detached leaves (1.0 g fresh weight) from weeping willow (salix babylonica l.) and chinese elder (sambucus chinensis lindl.) were kept in glass vessels with 100ml of aqueous solution spiked with potassium cyanide for a maximum of 28 h. ten different temperatures were used ranging from 11 degrees c to 32 degrees c. the disappearance of aqueous cyanide was analyzed spectrophotometrically. the cy ... | 2005 | 15833483 |
| cytology, immunohistochemistry and 3-dimensional reconstruction of adenoma malignum: a case report. | cytologic diagnosis of adenoma malignum is not easy. a case of adenoma malignum was diagnosed cytologically. | 2005 | 15839625 |
| phytotoxicity of cyanide to weeping willow trees. | cyanide is found predominantly in industrial effluents generated by metallurgical operations. it is an extremely toxic compound, so that problems and catastrophic accidents have recently occurred all around the globe. the goal of this study was to determine the toxicity of cyanide to a chinese willow species, and to determine the removal capacity. | 2005 | 15859117 |
| response of weeping willows to linear alkylbenzene sulfonate. | linear alkylbenzene sulfonate (las) is the most commonly used anionic surfactant in laundry detergents and cleaning agents. las compounds are found in surface waters and soils. the short-term acute toxicity of las to weeping willows (salix babylonica l.) was investigated. willow cuttings were grown in hydroponic solution spiked with las at 24.0+/-1 degrees c for 192 h. the normalized relative transpiration of plants was used to determine toxicity. severe reduction of the transpiration was only f ... | 2006 | 16403561 |
| direct measurement of sieve tube turgor pressure using severed aphid stylets. | turgor pressure in individual sieve tubes was measured directly by gluing capillary micromanometers over exuding aphid stylets with cyanoac-rylate adhesive. pressures of up to 10 bars were measured in sieve tubes of salix babylonica, with an estimated accuracy of +/- 0.3 bars or better.for comparison with the direct measurements of sieve tube turgor, calculated values of turgor pressure were also obtained from the difference between leaf water potential and phloem exudate solute potential, estim ... | 1980 | 16661346 |
| freezing stress response in woody tissues observed using low-temperature scanning electron microscopy and freeze substitution techniques. | the objective of the current research was to examine the response of woody plant tissues to freezing stress by using scanning electron microscopy (sem). nonsupercooling species red osier dogwood (cornus stolonifera michx.), weeping willow (salix babylonica l.), and corkscrew willow (salix matsudana koidz. f. tortuosa rehd.) survived freezing stress as low as -60 degrees c. cell collapse of ray parenchyma cells of these species was expected but did not occur. it was concluded that ray parenchyma ... | 1991 | 16668066 |
| the potential for phytoremediation of iron cyanide complex by willows. | hybrid willows (salix matsudana koidz x salix alba l.), weeping willows (salix babylonica l.) and hankow willows (salix matsudana koidz) were exposed to potassium ferrocyanide to determine the potential of these plants to extract, transport and metabolize this iron cyanide complex. young rooted cuttings were grown in hydroponic solution at 24.0 +/- 0.5 degrees c for 144 h. ferrocyanide in solution, air, and aerial tissues of plants was analyzed spectrophotometrically. uptake of ferrocyanide from ... | 2006 | 16703454 |
| uptake, metabolism, and toxicity of methyl tert-butyl ether (mtbe) in weeping willows. | methyl tert-butyl ether (mtbe) is a high volume production chemical and the most commonly used gasoline oxygenate. uptake, metabolism and toxicity of mtbe in trees were investigated in this study. pre-rooted weeping willows (salix babylonica l.) were exposed to hydroponic solution spiked with mtbe and incubated at 25.0+/-1 degrees c for 168 h. the normalized relative transpiration (nrt) rate of weeping willows was used to determine toxicity. mtbe and possible intermediate tert-butyl alcohol (tba ... | 2006 | 16723185 |
| biotransformation and metabolic response of cyanide in weeping willows. | biotransformation and metabolic responses of plants to cyanide were investigated using pre-rooted plants of weeping willows (salix babylonica l.) grown hydroponically in growth chambers and treated with potassium cyanide. various physiological parameters of the plants were monitored to determine toxicity from exogenous cyanide exposure. cyanide doses used in this study showed growth-promoting effects on plants, exhibiting higher measured values of transpiration rates, chlorophyll contents and so ... | 2007 | 17335966 |
| the role of edta in phytoextraction of hexavalent and trivalent chromium by two willow trees. | effects of the synthetic chelator ethylenediamine tetraacetate (edta) on uptake and internal translocation of hexavalent and trivalent chromium by plants were investigated. two different concentrations of edta were studied for enhancing the uptake and translocation of cr from the hydroponic solution spiked with k(2)cro(4) or crcl(3) maintained at 24.0 +/- 1 degrees c. faster removal of cr(3+) than cr(6+) by hybrid willows (salix matsudana koidz x salix alba l.) from the plant growth media was ob ... | 2008 | 17972178 |
| metabolic responses of weeping willows to selenate and selenite. | selenium (se) is one of the most widely distributed elements of the earth's crust at low concentrations. the extensive use of se-containing chemicals due to anthropogenic activities has increased the ecological risk to environmental compartments. plants, under unfavorable environmental conditions, often increase the formation of reactive oxygen species (ros), and consequently plant antioxidant enzymatic systems have been proposed to be important in plant stress tolerance. the goal of this study ... | 2007 | 18062484 |
| effect of temperature on the uptake and metabolism of cyanide by weeping willows. | plants' uptake and metabolism of cyanide in response to changes in temperature was investigated. pre-rooted weeping willows (salix babylonica l.) were exposed to hydroponic solution spiked with potassium cyanide for 2-3 d. ten different temperatures were used, ranging from 11 degrees c to 32 degrees c. cyanide in water, plant tissue, and air was analyzed spectrophotometrically. the results revealed that significant amounts of the applied cyanide were removed from the aqueous solutions in the pre ... | 2007 | 18246771 |
| effects of available nitrogen on the uptake and assimilation of ferrocyanide and ferricyanide complexes in weeping willows. | the effects of different levels of external nitrogen on the uptake, distribution and assimilation of iron cyanide complexes were investigated. pre-rooted weeping willows (salix babylonica l.) were grown in a hydroponic solution with or without nitrogen and amended with potassium ferrocyanide or potassium ferricyanide at 25.0 +/- 0.5 degrees c for 144 h. faster uptake of ferrocyanide than ferricyanide was observed in willows grown in the deionized water. negligible difference in the removal rate ... | 2008 | 18249493 |
| differences in uptake and translocation of hexavalent and trivalent chromium by two species of willows. | uptake and translocation of chromium (cr) by two willow species was investigated. intact pre-rooted weeping willows (salix babylonica l.) and hankow willows (salix matsudana koidz) were grown hydroponically and spiked with hexavalent chromium [cr (vi)] or trivalent chromium [cr (iii)] at 25.0 +/- 0.5 degrees c for 120 h. removal of leaves was also performed as a treatment to quantify the effect of transpiration on uptake and translocation of either of the cr species. although the two willow spec ... | 2008 | 18470609 |
| assimilation and physiological effects of ferrocyanide on weeping willows. | uptake, assimilation, and toxicity of exogenous iron cyanide complexes in plants were investigated. pre-rooted young weeping willows (salix babylonica l.) were exposed to hydroponic solutions spiked with potassium ferrocyanide at 24.0±1°c for 192h. transpiration rates, chlorophyll contents, soluble protein, and activities of superoxide dismutases (sod), catalase (cat), and peroxidase (pod) of the plants were monitored to determine toxicity to the cuttings. of all selected parameters, pod activit ... | 2008 | 18614232 |
| differences in uptake and translocation of selenate and selenite by the weeping willow and hybrid willow. | due to its essentiality, deficiency, and toxicity to living organisms and the extensive use in industrial activities, selenium (se) has become an element of global environmental and health concern. se removal from contaminated sites using physical, chemical, and engineering techniques is quite complicated and expensive. the goal of this study was to investigate uptake and translocation of se in willows and to provide quantitative information for field application whether se phytoremediation is f ... | 2008 | 18719961 |
| uptake, accumulation and metabolic response of ferricyanide in weeping willows. | the remediation potential and metabolic responses of plants to ferricyanide were investigated using pre-rooted weeping willows (salix babylonica l.) grown hydroponically in growth chambers and treated with potassium ferricyanide. positive responses were observed for the plants exposed to </= 274.13 mg cn l(-1) as ferricyanide, exhibiting higher chlorophylls and soluble proteins compared with the controls. visible toxic symptoms were only noted for the treatment exposed to 506.67 mg cn l(-1) afte ... | 2009 | 19137150 |
| pollen allergenic potential nature of some trees species: a multidisciplinary approach using aerobiological, immunochemical and hospital admissions data. | trees are considered producers of allergenic pollen. the aims of this work were to characterize the aerobiology of the platanus, acer, salix, quercus, betula and populus pollen, linking it with monthly emergency hospital admissions and to identify the different reactivity levels in sensitized patients. this information would be of great importance to evaluate the convenience of changing the inventory of pollen producer trees related to the risk of allergenic reactions. the study was conducted in ... | 2009 | 19147130 |
| [effect of biological pretreatment with trametes vesicolor on the enzymatic hydrolysis of softwood and hardwood]. | we evaluated the effect of biological pretreatment with white rot fungus trametes vesicolor on the enzymatic hydrolysis of two wood species, chinese willow (salix babylonica, hardwood) and china-fir (cunninghamia lanceolata, softwood). the result indicated that the pretreated woods showed significant increases in the final conversion ratios of enzymatic hydrolysis (4.78-fold for hardwood and 4.02-fold for softwood). in order to understand the role of biological pretreatment we investigated the e ... | 2009 | 19835139 |
| genetic structure and regulation of isoprene synthase in poplar (populus spp.). | isoprene is a volatile 5-carbon hydrocarbon derived from the chloroplastic methylerythritol 2-c-methyl-d: -erythritol 4-phosphate isoprenoid pathway. in plants, isoprene emission is controlled by the enzyme isoprene synthase; however, there is still relatively little known about the genetics and regulation of this enzyme. isoprene synthase gene structure was analysed in three poplar species. it was found that genes encoding stromal isoprene synthase exist as a small gene family, the members of w ... | 2010 | 20467886 |
| levels of polybrominated diphenyl ethers and hexabromocyclododecane in the atmosphere and tree bark from beijing, china. | air samples in four seasons at one site and tree bark samples from four districts were determined to investigate seasonal variation and regional distribution of polybrominated diphenyl ethers (pbdes) and hexabromocyclododecane (hbcd) in beijing, china. the total concentrations of pbdes (∑pbde) and hbcd (∑hbcd) were in the range of 57-470 and 20-1800pgm(-3) in the atmosphere, respectively. the ∑pbde and ∑hbcd concentrations were significantly influenced by the total suspended particulate matter i ... | 2011 | 21546059 |
| willow volatiles influence growth, development, and secondary metabolism in aspergillus parasiticus. | aflatoxin is a mycotoxin and the most potent naturally occurring carcinogen in many animals. aflatoxin contamination of food and feed crops causes a significant global burden on human and animal health. however, available methods to eliminate aflatoxin from food and feed are not fully effective. our goal is to discover novel, efficient, and practical methods to control aflatoxin contamination in crops during storage. in the present study, we tested the effect of volatiles produced by willow (sal ... | 2011 | 21614501 |