Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| characterization of crystals of penicillium purpurogenum acetyl xylan esterase from high-resolution x-ray diffraction. | acetyl xylan esterase from penicillium purpurogenum, a single-chain 23 kda member of a newly characterized family of esterases that cleaves side chain ester linkages in xylan, has been crystallized. the crystals diffract to better than 1 a resolution at the cornell high energy synchrotron source (chess) and are highly stable in the synchrotron radiation. the space group is p2(1)2(1)2(1) and cell dimensions are a = 34.9 a, b = 61.0 a, c = 72.5 a. | 1996 | 8860002 |
| assessment of the biodistribution and metabolism of 5-fluorouracil as monitored by 18f pet and 19f mri: a comparative animal study. | the effective clinical use of the anticancer drug 5-fluorouracil (5-fu) requires the non-invasive assessment of its transport and metabolism, particularly in the tumor and the liver, where the drug is catabolized to alpha-fluoro-beta-alanine (fbal). in this study, the potentials and limitations of dynamic 18f pet and metabolic 19f mri examinations for noninvasive 5-fu monitoring were investigated in aci and buffalo rats with transplanted mh3924a and tc5123 morris hepatomas, respectively. selecti ... | 1996 | 8971857 |
| [visual evoked potentials in infants in health and hypoplasia of the optic nerve]. | visual evoked potentials (vep) in response to chess field reversion were studied in 29 infants aged from 6 weeks to 1.5 years with optic nerve hypoplasia and in healthy age-matched controls. analysis of vep in healthy children showed that the interval between weeks 6-9 and 16-20 of life was the period of their most rapid maturation, this making this period in the development of the optic system of man particularly significant. three types of vep disorders were detected in patients with optic ner ... | 1996 | 9148558 |
| localized 2d j-resolved 1h mr spectroscopy of human brain tumors in vivo. | application of two-dimensional (2d) j-resolved mr spectroscopy, fully localized in three dimensions to monitor the metabolites in human brain tumors in vivo on a whole body mr scanner is presented. a modified press sequence with [90 degrees - 180 degrees - t1/2 - 180 degrees - t1/ 2-acquisition] was used for voxel localization (2d j point-resolved spectroscopy [press]); chemical shift selective (chess) sequence was used for suppression of water. the incremental delay (t1/2) added to the interval ... | 1996 | 8724410 |
| expert and exceptional performance: evidence of maximal adaptation to task constraints. | expert and exceptional performance are shown to be mediated by cognitive and perceptual-motor skills and by domain-specific physiological and anatomical adaptations. the highest levels of human performance in different domains can only be attained after around ten years of extended, daily amounts of deliberate practice activities. laboratory analyses of expert performance in many domains such as chess, medicine, auditing, computer programming, bridge, physics, sports, typing, juggling, dance, an ... | 1996 | 15012483 |
| cardiopulmonary resuscitation: what cost to cheat death? | to review the various outcomes from cardiopulmonary resuscitation (cpr), the factors that influence these outcomes, the costs associated with cpr, and the application of cost-analyses to cpr. | 1996 | 8968275 |
| development of a body image assessment procedure for children and preadolescents. | researchers have identified eating disorders among prepubertal children; therefore, there is a need for the development of reliable and valid measures of body image in children. | 1996 | 8912041 |
| [fast spin echo imaging of vertebral metastasis: comparison of fat suppression techniques (fse-chess, stir-fse)]. | to investigate the capabilities of fast spin echo (fse) sequences in diagnosing spinal metastases and to compare two fat-suppression techniques: chess (chemical shift selective saturation) and stir (short t1 inversion recovery). fat suppression is recommended with fse sequences because on them, different from conventional spin echo (se) sequences, fat has high signal intensity in both t1 and t2 weighting, masking such high-signal bone lesions as metastases. | 1996 | 8975299 |
| a peroxiredoxin antioxidant is encoded by a dormancy-related gene, per1, expressed during late development in the aleurone and embryo of barley grains. | antioxidants can remove damaging reactive oxygen species produced as by-products of desiccation and respiration during late embryogenesis, imbibition of dormant seeds and germination. we have expressed a protein, per1, encoded by the balem (barley aleurone and embryo) transcript previously called b15c, and show it to reduce oxidative damage in vitro. per1 shares high similarity to a novel group of thiol-requiring antioxidants, named peroxiredoxins, and represents a subgroup with only one conserv ... | 1996 | 8914536 |
| [early exercise test in patients with myocardial infarction after nifedipine administration of prolonged duration]. | in 25 patients with transmural myocardial infarction a mean of 16 days after the onset of infarction an exercise stress test was performed 2 hours after the administration of corinfar retard. we evaluated ecg, blood pressure, heart rate, echocardiograms and spirographic parameters before and after drug administration. in the majority of patients st segment depressions were reduced and duration of the exercise test increased or remained unchanged. in 5 patients the magnitude of st segment depress ... | 1996 | 9156912 |
| templates in chess memory: a mechanism for recalling several boards. | this paper addresses empirically and theoretically a question derived from the chunking theory of memory (chase & simon, 1973a, 1973b): to what extent is skilled chess memory limited by the size of short-term memory (about seven chunks)? this question is addressed first with an experiment where subjects, ranking from class a players to grandmasters, are asked to recall up to five positions presented during 5 s each. results show a decline of percentage of recall with additional boards, but also ... | 1996 | 8812020 |
| recall of rapidly presented random chess positions is a function of skill. | a widely cited result asserts that experts' superiority over novices in recalling meaningful material from their domain of expertise vanishes when they are confronted with random material. a review of recent chess experiments in which random positions served as control material (presentation time between 3 and 10 sec) shows, however, that strong players generally maintain some superiority over weak players even with random positions, although the relative difference between skill levels is much ... | 1996 | 24213863 |
| 1h mr spectroscopy detection of lipids and lactate in metastatic brain tumors. | 1h mr spectroscopy was used to correlate the metabolite signals in 66 untreated metastatic brain tumors with the results of gd-dtpa enhanced mri. cubic volumes containing brain metastases of lung cancer (n = 17), mammary carcinoma (n = 24), melanoma (n = 12) and those originating from other tumors (n = 13) were examined using the double spin echo technique with chess pulses for water suppression and te = 135 ms. apart from trends toward reduced signals of choline-containing compounds (cho) and r ... | 1996 | 8887370 |
| atomic structure of the degraded procapsid particle of the bacteriophage g4: induced structural changes in the presence of calcium ions and functional implications. | bacteriophage g4 and phix174 are members of the microviridae family. the degree of similarity of the structural proteins ranges from 66% identity of the f protein to 40% identity of the g protein. the atomic structure of the phix174 virion had previously been determined by x-ray crystallography. bacteriophage g4 procapsids, consisting of the structural proteins f, g, d, b, h, and small traces of j but no dna, were set up for crystallization. however, the resultant crystals were of degraded proca ... | 1996 | 8642594 |
| cheating in medical school: a survey of second-year students at 31 schools. | although there have been a number of studies of cheating in universities, surprisingly little has appeared recently in the literature regarding academic dishonesty among medical students. | 1996 | 8607927 |
| crystallization and preliminary x-ray analysis of twinned crystals of a chimeric fk506 binding protein 12 and 13 complexed with fk506. | an fkbpi2/13 chimera with the 80s loop of fkbpi3 replacing the corresponding loop in fkbpi2 tightly binds the immunosuppressive agents fk506 and rapamycin and efficiently catalyzes peptidyl-prolyl cis-trans isomerization. however, the chimera's complex with fk506 does not inhibit calcineurin's phosphatase activity [yang, rosen & schreiber (1993). j. am. chem. soc. 115(2), 819-820]. the chimeric protein crystallizes in space group p1 and the crystals are always twinned. the twin composites are re ... | 1996 | 15299748 |
| chess: comprehensive health enhancement support system for women with breast cancer. | the comprehensive health enhancement support system (chess) was developed to assist people dealing with health crises. needs assessments with patients were conducted in its development and validation studies performed. chess provides information, social support, and decision-making assistance via a personal computer and modem that are placed in patients' homes. women of all ages and varied socioeconomic backgrounds have successfully used this program to empower them to become active participants ... | 1996 | 9060757 |
| working memory in chess. | three experiments investigated the role of working memory in various aspects of thinking in chess. experiment 1 examined the immediate memory for briefly presented chess positions from master games in players from a wide range of abilities, following the imposition of various secondary tasks designed to block separate components of working memory. suppression of the articulatory loop (by preventing subvocal rehearsal) had no effect on measures of recall, whereas blocking the visuospatial sketchp ... | 1996 | 8822160 |
| antigen retrieval techniques in immunohistochemistry: comparison of different methods. | routine sections of normal and pathological samples fixed in 10 per cent buffered formalin or b5, including edta-decalcified bone-marrow biopsies, were tested with 61 antibodies following heating in three different fluids: 0.01 m citrate buffer (ph 6.0), 0.1 m tris-hcl (ph 8.0), and 1 mm edta-naoh solution (ph 8.0). the sections underwent either three cycles of microwave treatment (5 min each) or pressure cooking for 1-2 min. the alkaline phosphatase/anti-alkaline phosphatase (apaap) technique w ... | 1997 | 9370957 |
| a reexamination of gilligan's analysis of the female moral system : distaff altruism will not succeed. | gilligan's (1982) refinement of kohlberg's theory on moral development operates on two theses: (1) females, more so than males, reach moral decisions based on the personalities of the relevant individuals; and (2) female behaviors stemming from moral decisions are based upon "care" and "responsibility for others." this article accepts the first thesis but argues that the second is incorrect. that is, self-interest-i.e., aiding "blood" kin and/or carefully monitoring reciprocity-rather than "altr ... | 1997 | 26196966 |
| improved water and lipid suppression for 3d press csi using rf band selective inversion with gradient dephasing (basing). | a t1 insensitive solvent suppression technique-band selective inversion with gradient dephasing (basing)-was developed to suppress water and lipids for 1h magnetic resonance spectroscopy (mrs). basing, which consists of a frequency selective rf inversion pulse surrounded by spoiler gradient pulses of opposite signs, was used to dephase stopband resonances and minimally impact passband metabolites. passband phase linearity was achieved with a dual basing scheme. using the shinnar-le roux algorith ... | 1997 | 9256113 |
| evolution's 'missing link': a hypothesis upon neural plasticity, prefrontal working memory and the origins of modern cognition. | many activities such as reading, mathematics and chess depend upon cognitive processes which arose after our evolution. why could they arise if not evolved? i argue four things fortuitously came together to make our nonevolved cognitive skills possible: (i) neural plasticity; (ii) large functionally uncommitted prefrontal, temporal and parietal cerebral cortices; (iii) the ability of their neural circuits (due to neural plasticity), if trained, to take on novel symbolic and nonsymbolic skills; a ... | 1997 | 9247893 |
| a system for integrated collection and analysis of crystallographic diffraction data. | a set of linked software modules has been installed at the a1 station of chess, the cornell high energy synchrotron source, which, with the underlying hardware, allows crystallographic users of the facility to evaluate crystals, collect diffraction images and process the images rapidly and with assurance of the quality of the resultant data, thereby making most efficient use of their beam time. the system includes a ccd detector and its controlling software, with a graphical user interface, a co ... | 1997 | 16699219 |
| improvement of the compliance with blood glucose monitoring in young insulin-dependent diabetes mellitus patients by the sensorlink system. | recently, medisense has introduced the sensorlink system as a tool for retrieving the 125 last results of home blood glucose monitoring stored in patient's pen 2 or companion 2, unknown to them. therefore we decided to check the compliance of type i diabetic adolescents and young adults with home blood glucose monitoring (hbgm) by comparing the blood glucose values noted in their log book and those retrieved by the sensorlink and to evaluate an eventual subsequent effect both on compliance and g ... | 1997 | 9229191 |
| pediatric codes: a cheat sheet. | 1997 | 9110870 | |
| body figure perceptions and eating attitudes among australian schoolchildren aged 8 to 12 years. | how widespread is the desire for thinness among preadolescent australian children and are there gender differences? | 1997 | 9097200 |
| fraud worries insurance companies but should concern physicians too, industry says. | the amount of insurance fraud is increasing in canada. this should worry physicians, because all personal-injury claims must be substantiated by a medical certificate. the vast majority of physicians are honest and ethical, fraud investigators say, but some are being duped as patients scheme to cheat the insurance industry. in one sensational auto-insurance-fraud case, some ontario physicians are being investigated about possible involvement in a self-referral scheme. nicole baer looks at insura ... | 1997 | 9012734 |
| [evoked potentials in parkinsonism]. | evoked potentials (ep) were analysed in patients with idiopathic form of parkinson's disease (pd) in terms of three modalities: visual ep of chess pattern, acoustic ep of brain stem and somato-sensory ep during stimulation of median and tibial nerves. the data were compared with clinical characteristics. the conclusion was drawn about evident participation of afferent systems in pd development which is apparently secondary. | 1997 | 9214195 |
| [reading-induced epilepsy: three new cases]. | primary epilepsy of reading is a rare syndrome in which patients present with mandibular myoclonia when reading texts. seizures are also frequently provoked by other stimuli. occasionally they may be followed by generalized tonic-clonic seizures. | 1997 | 9091229 |
| crystallization and preliminary x-ray analysis of tobacco ringspot virus. | tobacco ringspot virus, a plant virus that is believed to fill an apparent niche in the evolution of picornavirus-like capsids, has been crystallized by vapor diffusion with potassium phosphate and polyethylene glycol buffered at ph 6.5 in a new crystal form. the monoclinic crystals belong to the space group c2 with unit-cell dimensions of a = 407.1, b = 399.7, c = 285.9 a and beta = 129.1 degrees and diffract synchrotron radiation to 3.3 a. one half of a virus particle constitutes the crystallo ... | 1997 | 15299983 |
| protein crystallography using a multilayer monochromator. | a multilayer monochromator was installed on a bending-magnet beamline at the cornell high energy synchrotron source (chess) and was used to provide an unfocused pseudo-monochromatic x-ray beam for protein crystallography experiments. datasets were collected from lysozyme at room temperature and human methylthioadenosine phosphorylase at 100 k. the wide energy bandpass of the multilayer allowed short exposure times, typically only a few times longer than on a focused multipole wiggler beamline. t ... | 1998 | 15263556 |
| the quality of interactive computer use among hiv-infected individuals. | this study examined how hiv-infected individuals used an interactive health software package called chess (comprehensive health enhancement support system). chess packages information and support in a variety of ways; the research examined how a subset of users whose posttest scores in a larger randomized trial showed significant improvement in quality of life compared on use patterns of chess with those who did not improve. the evidence presented here points to the nature of chess use more than ... | 1998 | 10947374 |
| melatonin for the masses. antiaging entrepreneurs peddle therapies that promise to cheat the clock. | the come-ons for a new wave of antiaging clinics may be over the top, but they speak to boomer anxieties about flagging energy levels and flabby midsections. and they just may be the next hot trend in health care. | 1998 | 9849506 |
| context-dependent behavior and the benefits of communal nesting. | we present a model for the behavior of communally nesting insects. females may forage for food to provision offspring or may remain in the nest, with the option of eating and replacing nest mates' eggs. orphaned brood are at risk of predation. the optimal behavior of solitary females is determined using stochastic dynamic programming; static and dynamic evolutionarily stable strategies (esss) are then calculated for colonies of various sizes. a solitary female should forage if her brood is small ... | 1998 | 18811389 |
| consequences of hyper-aggressiveness in siamese fighting fish: cheaters seldom prospered | zahavi's handicap theory, formalized by grafen, suggests that 'cheaters' must be at a disadvantage if a communication system such as ritualized aggression is to evolve (grafen 1991, in: behavioural ecology: an evolutionary approach (ed. by j. r. krebs & n. b. davies), pp. 5-31. oxford: blackwell scientific). to determine whether cheating is disadvantageous in betta splendens, we held a series of live interactions, after inducing hyper-aggression by socially isolating and then briefly 'priming' t ... | 1998 | 9480675 |
| mass effects of quartz resonant sensors with different surface microstructures in liquids. | liquid trapped by the rough surface of a quartz resonator vibrating in thickness-shear mode (tsm) will act as a mass effect to the crystal. it has been proven that this mass effect not only depends on the liquid mass enclosed in the surface cavities, but also the liquid properties and the crystal surface features. based on a series of experiments, this paper introduces "trapping factor" to analyze the mechanism of the liquid mass effect. influences of different surface microstructures, including ... | 1998 | 18244280 |
| a new macromolecular oscillation camera at chess. | increasing x-ray flux and decreasing crystal size are two factors placing new demands on macromolecular diffraction cameras at synchrotrons. a new oscillation camera with high mechanical precision and fast rotation speed is described. | 1998 | 15263695 |
| capablanca's stroke: an early case of neurogenic heart disease. cuban-world-champion of chess 1921-1927. | the great chess master jose raul capablanca died of a stroke in new york city in 1942. an analysis of his death is instructive in the discussion of cardiac repercussions of hypertensive cerebral hemorrhage, particularly regarding the close relationship between subendocardial hemorrhage and its probable source - sympathetic activation - caused by stroke. | 1998 | 11620526 |
| study of eating attitudes and body image perception in the preadolescent age. | eating attitudes and body image have been studied in a group of 109 girls, pupils of the fifth primary school grade (average age 10 years and 8 months). the children's eating attitude test (cheat) has been used in the study of eating attitudes. the mean questionnaire score is 11.38 +/- 8 with a range of 0 to 45. fourteen girls (12.8%) had a total score higher than 20, making them an eating disorder risk group. a set of seven schematic figures showing silhouettes of girls ranging from very thin t ... | 1998 | 10097438 |
| the endovascular treatment of brain arteriovenous malformations. | advances in superselective microcatheterization techniques, which took place in the past decade, established superselective endovascular exploration as an integral and indispensable tool in the pretherapeutic evaluation of brain avms. the strict and routine application of superselective angiography furthered our knowledge on the angioarchitecture of brain avms, including vascular composition of the nidus, types of feeding arteries and types and patterns of venous drainage. in addition, various t ... | 1998 | 10050213 |
| how shall we speak of children's personalities in middle childhood? a preliminary taxonomy. | developmental researchers have neglected the study of personality traits in middle childhood, thus leaving unanswered many questions about childhood personality structure. this article presents a developmental framework for understanding personality in middle childhood and critically reviews 5 models of temperament and personality structure in this age range: the models of a. thomas and s. chess, a. h. buss and r. plomin, m. k. rothbart, j. block and j. h. block, and the big five. a number of ro ... | 1998 | 9849111 |
| [osseous reconstruction of the patella with screwed autologous graft in the course of repeat prosthesis of the knee]. | the aim of this study was to propose an original way of solving the infrequent but difficult problem of a thin patellar remnant. after removal of the loose patellar button of a knee prosthesis, several options are available: patellectomy should be avoided because of unpredictable results; patelloplasty may be the solution if bone quality is too poor and can allow for its improvement with time; recementing a new implant needs the remaining patella to be thick enough (more than 10 millimeters). | 1998 | 9775038 |
| [use of risk number in chronic diseases. number needed to cheat?]. | 1998 | 9748829 | |
| expert chess memory: revisiting the chunking hypothesis. | after reviewing the relevant theory on chess expertise, this paper re-examines experimentally the finding of chase and simon (1973a) that the differences in ability of chess players at different skill levels to copy and to recall positions are attributable to the experts' storage of thousands of chunks (patterned clusters of pieces) in long-term memory. despite important differences in the experimental apparatus, the data of the present experiments regarding latencies and chess relations between ... | 1998 | 9709441 |
| automation in urodynamics. | the information concerning bladder function during voiding and the size of the outlet resistance is found in relation to detrusor pressure and urinary flow (pressure flow plot). the lowest detrusor pressure during voiding (low-pressure flank) contains information on mechanical resistance (passive urethral resistance relation, purr). the purr curve is defined using foot point (cross-section with pressure axis) and slope. an increasing foot point as well as a decrease in the slope of the purr curv ... | 1998 | 9705553 |
| expert memory: a comparison of four theories. | this paper compares four current theories of expertise with respect to chess players' memory: chase and simon's chunking theory, holding's seek theory, ericsson and kintsch's long-term working memory theory, and gobet and simon's template theory (chase, w.g., simon, h.a., 1973a. perception in chess. cognitive psychology 4, 55-81; holding, d.h., 1985. the psychology of chess skill. erlbaum, hillsdale, nj; ericsson, k.a., kintsch, w., 1995. long-term working memory. psychological review 102, 211-2 ... | 1998 | 9677761 |
| apperception and imagery in blindfold chess. | apperception constructs functional and "meaningful" mental representations. these representations are often built on mental images. hence it is rational to assume that the contents of some parts of images may be functionally more important than others. this means that the cognitive processing of some parts of the image is more effective than for others. to extract this preferential structure, which we call the functional figure in mental images, five experiments were conducted on blindfold chess ... | 1998 | 9640433 |
| analysis of outcome after thermotherapy using different classifications of bladder outlet obstruction. | the urodynamic profiles of 97 patients with benign prostatic hyperplasia undergoing low-energy transurethral microwave thermotherapy (tumt) for lower urinary tract symptoms were analysed using the abrams/griffiths nomogram, the urethral resistance algorithm, the linpurr, schäfer nomogram, and the chess classification. a significant clinical response was seen for the whole group, as shown by changes in symptom score, free flow rate, and residual urine. the best symptomatic response was identified ... | 1998 | 9514143 |
| a path model of whitewater boating satisfaction on the cheat river of west virginia | / recreation satisfaction is a complex psychological construct that is difficult to define and measure. recent approaches suggest that overall satisfaction may be a function of multiple satisfactions derived from specific elements of a recreation experience such as the situational characteristics of a recreation setting or activity and the recreationist's subjective evaluations of the experience. in this paper, a path model of whitewater boating satisfaction was tested using data from a survey o ... | 1998 | 9419289 |
| women's strategies to alleviate nutritional stress in a rural african society. | many agricultural populations are subject to chronic or seasonal undernutrition, reproductive women and children often being most vulnerable. this paper presents quantitative and qualitative data on food consumption, food distribution practices, food taboos, garden sizes and work effort to show how lese horticulturalist women living in the ituri forest of northeast democratic republic of congo attempt to alleviate nutritional stress. the lese experience an annual hunger season when approximately ... | 1999 | 10048774 |
| propagating distributions up directed acyclic graphs. | in a previous article, we considered game trees as graphical models. adopting an evaluation function that returned a probability distribution over values likely to be taken at a given position, we described how to build a model of uncertainty and use it for utility-directed growth of the search tree and for deciding on a move after search was completed. in some games, such as chess and othello, the same position can occur more than once, collapsing the game tree to a directed acyclic graph (dag) ... | 1999 | 9950730 |
| [comparative diagnostic value of methods of visual evoked potentials registration during the stimulation by reversible chess pattern and by flash in patients with demyelinating pathology]. | 1999 | 10533255 | |
| adolescent social anxiety as an outcome of inhibited temperament in childhood. | chess and thomas suggested that temperament might make a contribution to social phobia and other forms of extreme social anxiety. this study provides the first investigation of the outcomes in adolescents who had been inhibited (subdued to and avoidant of novelty) or uninhibited (approaching novelty) in the second year of life, utilizing both direct interview and direct observation. | 1999 | 10434493 |
| anthropometry, body composition and body image in dieting and non-dieting 8-16-year-old swedish girls. | anthropometry, body composition and body image were studied in 122 swedish 8-16-y-old girls and their parents. the subjects participated in a 3-y prospective longitudinal study and were selected randomly after stratification for grades from those scoring in the upper vs. the lower thirds of the children's eating attitudes test (cheat) score distribution. the cheat was completed 6 mo before the present study together with a demographic and dieting questionnaire and a questionnaire for the estimat ... | 1999 | 10426177 |
| injuries in commercial whitewater rafting. | to describe injuries sustained by participants in commercial whitewater rafting. | 1999 | 10336047 |
| problem eating attitudes and behaviors in young children. | the factor structure of the children's eating attitudes test (cheat) and the predictors of problem eating were examined in young boys and girls. | 1999 | 10191992 |
| health informatics and community health: support for patients as collaborators in care. | health informatics has much to offer community health care. computer networks and telecommunications provide particular support that can enhance the collaboration among clinicians, care providers and patients. special-purpose computer tools referred to as consumer health informatics (chi) represent the application of computer and information technologies specifically to support the health information and communication needs of patients and lay persons. research projects like computerlink and che ... | 1999 | 10805012 |
| recall or evaluation of chess positions revisited: the relationship between memory and evaluation in chess skill. | we extend work by holding and reynolds (1982) on recall and problem solving with quasirandom chess positions. we tested 17 chess players on both quasirandom and structured chess positions. consistent with the earlier study, initial recall of quasirandom chess positions is unrelated to chess skill level, and quality of the move selected in subsequent problem solving is related to skill level. however, recall following problem solving is related to chess skill level. these results support the view ... | 1999 | 10696266 |
| [how does fetus cheat mother's t-cells?]. | 1999 | 11859507 | |
| covalent three-dimensional titanium(iv)-aryloxide networks. | ti((i)opr)(4) was treated with 2.58 equiv of hydroquinone in thf to yield a red-orange powder formulated as [ti(oc(6)h(4)o)(a)()(oc(6)h(4)oh)(3.34)(-)(1.83)(a)()(o(i)pr)(0.66)(-)(0.17)(a)() (thf)(0.2)](n)() (1, (0.91 </= a </= 1.82)) based upon d(2)o/dcl quenching studies. treatment of 1 with an excess of hydroquinone in et(2)o or dme afforded burgundy [ti(2)(&mgr;(1,4)-oc(6)h(4)o)(2)(&mgr;(1,4)-oc(6)h(4)oh)(2)(&mgr;-oc(6)h(4)oh)(2)](infinity) (2). burgundy [ti(2)(&mgr;(1,4)-oc(6)h(4)o)(2)(&mgr; ... | 1999 | 11671077 |
| chess games: a model for rna based computation. | here we develop the theory of rna computing and a method for solving the 'knight problem' as an instance of a satisfiability (sat) problem. using only biological molecules and enzymes as tools, we developed an algorithm for solving the knight problem (3 x 3 chess board) using a 10-bit combinatorial pool and sequential rnase h digestions. the results of preliminary experiments presented here reveal that the protocol recovers far more correct solutions than expected at random, but the persistence ... | 1999 | 10636028 |
| impact of a patient-centered, computer-based health information/support system. | consumer health information systems potentially improve a patient's quality of life and activate patient self-care. | 1999 | 9894548 |
| naa-weighted imaging of the human brain using a conventional readout gradient. | an imaging sequence incorporating two complementary forms of water suppression was used in conjunction with conventional readout and phase-encoding gradients to acquire images of n-acetylaspartate (naa) in human brain. the sequence consisted of chess water suppression pulses followed by dual echo sequence to select the imaging volume and frequency-selective refocusing pulses with asymmetric crushers to further reduce the water signal. spectra and conventional spectroscopic images acquired with t ... | 1999 | 10025628 |
| crystallographic analysis of the dsdna bacteriophage hk97 mature empty capsid. | hk97 is a member of the siphovirus family of dsdna bacteriophages. it is similar in architecture to bacteriophage lambda, the type member of this family, with an icosahedral capsid of triangulation number t = 7. no high-resolution structural information is available for the dsdna phages, and hk97 is the only dsdna bacteriophage capsid to produce crystals which diffract x-rays. at 650 a in diameter, the large size of the particle and resultant large unit cell create crystallographic challenges. t ... | 1999 | 10089306 |
| crystallization and preliminary x-ray crystallographic analysis of the pseudomonas aeruginosa cyclohexadienyl dehydratase. | the title protein has been crystallized in a new crystal form. the crystals belong to the cubic space group p4132 (or p4332) with unit-cell dimensions a = b = c = 126.1 a at 100 k and typically diffract beyond 1.6 a at the cornell high energy synchotron source (chess) a1 beamline. | 1999 | 10089371 |
| classifications in psychiatry: a conceptual history. | historical accounts of psychiatric classifications have hitherto been written in terms of a 'received view'. this contains two assumptions, that: (i) the activity of classifying is inherent to the human mind; and (ii) psychiatric 'phenomena' are stable natural objects. | 1999 | 10336212 |
| off-resonance metabolite magnetization transfer measurements on rat brain in situ. | off-resonance metabolite magnetization transfer (mt) experiments were performed on rat brain in vivo and post mortem, with short (18 msec) and long (144 msec) echo-time 1h nuclear magnetic resonance (nmr) spectroscopy. in vivo and post mortem, the methyl protons of total creatine and all protons from glutamate/glutamine showed a strong mt effect on off-resonance saturation, as well as the methyl protons from lactate post mortem. other resonances, like that of a-acetyl aspartate, showed a much sm ... | 1999 | 10371445 |
| reduced (1)h-nmr visibility of creatine in isolated rat hearts. | the aim of this study was to measure the concentration of creatine in langendorff perfused rat hearts, both by quantitative (1)h-mrs and by high-pressure liquid chromatography (hplc). first, the relaxation times and other parameters affecting absolute quantification by mrs were determined. at 11.75 t, the relaxation times of myocardial creatine were t(1) = 1.1+/-0.29 sec (mean +/- sd, n = 5) and t(2) = 56.4+/-6.2 ms (n = 9). in phantom experiments the mrs measurements gave accurate values for th ... | 2000 | 10748423 |
| critical notice. | "goodness of fit": clinical applications from infancy through adult life. by stella chess & alexander thomas. brunner/mazel, philadelphia, pa, 1999. pp. 229. pound24.95 (hb). chess and thomas's pioneering longitudinal studies of temperamental individuality started over 40 years ago (thomas et al., 1963). their publications soon became and remain classics. their concept of "goodness of fit" emerges out of this monumental work but has had a long gestation period. in their new book, the authors dis ... | 2000 | 11260833 |
| examples of real world engineering ethics problems. | nine examples are presented illustrating the kinds of problems encountered in actual practice by conscientious engineers. these cases are drawn fom the records of the ieee ethics committee, and from the experience of the ethics helpline initiated recently by the online ethics center for engineering and science. they range from situations in which companies try to cheat one another to those in which human health and safety are jeopardized. in one case, an engineer learned that even a quiet resign ... | 2000 | 11273465 |
| increased efficacy of zinc complexes with picolinic and aspartic acids against herpes simplex virus (hsv) infection when combined with the pavine alkaloid (-)-thalimonine. | complexes of zinc with picolinic and aspartic acids inhibit key steps of hsv-1 replication affecting different virus-specific targets. as was recently demonstrated by us, the pavine alkaloid (-)-thalimonine irreversibly inhibits hsv-1 infection in cultured cells. the aim of the present study was the evaluation of the combined effect of zinc complexes and (-)-thalimonine on uninfected and hsv-1 infected cells. the data obtained have shown that zinc complexes and the alkaloid exert decreased cytot ... | 2000 | 18475954 |
| conformational analysis of the sd(a) determinant-containing tetrasaccharide and two mimics in aqueous solution by using 1h nmr roesy spectroscopy in combination with md simulations. | the conformational behaviour of the spacer-linked synthetic sd(a) tetrasaccharide beta-d-galpnac-(1-->4)-[alpha-neu5ac-(2-->3)]-beta-d-galp-(1-->4)- beta-d-glcpnac-(1-->o)(ch2)5nh2 (1) and the two mimics beta-d-galp-(1-->4)-[alpha-neu5ac-(2-->3)]-beta-d-galp-(1-->4)-bet a-d-glcpnac-(1-->o)(ch2)5nh2 (2) and beta-d-glcpnac-(1-->4)-[alpha-neu5ac-(2-->3)]-beta-d-galp-(1-->4)- beta-d-glcpnac-(1-->o)(ch2)5nh2 (3) were investigated by 1h nmr spectroscopy in combination with molecular dynamics (md) simu ... | 2000 | 10718613 |
| molecular computation: rna solutions to chess problems. | we have expanded the field of "dna computers" to rna and present a general approach for the solution of satisfiability problems. as an example, we consider a variant of the "knight problem," which asks generally what configurations of knights can one place on an n x n chess board such that no knight is attacking any other knight on the board. using specific ribonuclease digestion to manipulate strands of a 10-bit binary rna library, we developed a molecular algorithm and applied it to a 3 x 3 ch ... | 2000 | 10677471 |
| rapid mr imaging of cryoprotectant permeation in an engineered dermal replacement. | magnetic resonance (mr) imaging is a powerful technique for monitoring the permeation of cryoprotective agents (cpas) inside tissues. however, the techniques published until now suffer from inherently long imaging times, limiting the application of these techniques to slow diffusion processes and large cpa concentrations. in this study, we present a rapid mr imaging technique based on a chess-flash scheme combined with keyhole image acquisition. this technique can image the fast permeation of me ... | 2000 | 10679146 |
| clinical application of basing and spectral/spatial water and lipid suppression pulses for prostate cancer staging and localization by in vivo 3d 1h magnetic resonance spectroscopic imaging. | in previous in situ point-resolved spectroscopy (press) three-dimensional (3d) 1h magnetic resonance (mr) spectroscopic imaging studies, it has been demonstrated that the ratio of prostatic metabolites can noninvasively discriminate prostate cancer from surrounding normal tissue. however, in these studies, conventional chemical shift selective suppression (chess) and short-time inversion recovery (stir) techniques often resulted in inadequate water and lipid suppression. to improve suppression a ... | 2000 | 10642727 |
| assessment of eating behaviours and attitudes to eating, dieting and body image in pre-adolescent swedish girls: a one-year follow-up. | a 1-y follow-up of fifty 8-y-old swedish girls was performed to assess changes in eating attitudes and dieting behaviour. individual structured interviews using the children's eating attitudes test (cheat) and body image silhouettes were used. the question, "have you ever tried to lose weight?" was employed to discriminate dieters from non-dieters. dieting behaviours according to the cheat increased over the follow-up period. | 2000 | 10976846 |
| ori to study why cheaters cheat. | 2000 | 10973292 | |
| increased resolution data from a large unit cell crystal collected at a third-generation synchrotron x-ray source. | a third-generation synchrotron source was used to collect data from crystals with a very large unit cell. there was an increase in the effective resolution of the data from 5 to 3.5 a. data were collected on crystals of hk97 mature empty capsids, space group p2(1), with unit-cell parameters a = 580, b = 625, c = 790 a, beta = 90.0 degrees. like other crystals with very large unit-cell dimensions, the intensity falls off rapidly as a function of resolution, with a precipitous drop beginning at 9 ... | 2000 | 10930835 |
| the relative contributions of recognition and search-evaluation processes to high-level chess performance: comment on gobet and simon. | 2000 | 11273426 | |
| some shortcomings of long-term working memory. | within the framework of their long term working memory theory, ericsson and kintsch (1995) propose that experts rapidly store information in long-term memory through two mechanisms: elaboration of long-term memory patterns and schemas and use of retrieval structures. they use chess players' memory as one of their most compelling sources of empirical evidence. in this paper, i show that evidence from chess memory, far from supporting their theory, limits its generality. evidence from other domain ... | 2000 | 11104178 |
| perceptual automaticity in expert chess players: parallel encoding of chess relations. | a check detection task in a 5 x 5 section of the chessboard, containing a king and one or two potential checking pieces was employed. the checking status (i.e., the presence or absence of a check) and the number of attackers (one or two) were manipulated. it was found that the reaction time cost for adding a distractor was differentially greater in no trials than yes trials for novice, but not for expert, chess players. in addition, we contrasted standard check detection trials with trials in wh ... | 2001 | 11700901 |
| the psychology of social chess and the evolution of attribution mechanisms: explaining the fundamental attribution error. | theory of mind is the field devoted to understanding how organisms discern the mental states of others. because mental states are not directly observable, they can only be inferred from observable features of the actor (such as behavior) and the situational context that the actor is in. social psychologists, who study theory of mind processes under the rubric of attribution research, have shown that people often make a logical error of inference: the "fundamental attribution error" (fae) is the ... | 2001 | 11182572 |
| chess: ten years of research and development in consumer health informatics for broad populations, including the underserved. | this paper reviews the research and development around a consumer health informatics system chess (the comprehensive health enhancement support system) developed and tested by the center for health systems research and analysis at the university of wisconsin. the review will place particular emphasis on what has been found with regard to the acceptance and use of such systems by high risk and underserved groups. | 2001 | 11604968 |
| fast three-point dixon mr imaging using low-resolution images for phase correction: a comparison with chemical shift selective fat suppression for pediatric musculoskeletal imaging. | the purpose of this study is to describe and to implement a new fast three-point dixon mr imaging sequence with online image reconstruction, and to compare this sequence with conventional chemical shift selective (chess) suppression of fat in pediatric musculoskeletal imaging. | 2001 | 11641161 |
| the perceptual aspect of skilled performance in chess: evidence from eye movements. | expert and intermediate chess players attempted to choose the best move in five chess positions while their eye movements were monitored. experts were faster and more accurate than intermediates in choosing the best move. experts made fewer fixations per trial and greater amplitude saccades than did intermediates, but there was no difference in fixation duration across skill groups. examining the spatial distribution of the first five fixations for each position by skill group revealed that expe ... | 2001 | 11913751 |
| mate choice trade-offs and women's preference for physically attractive men. | researchers studying human sexuality have repeatedly concluded that men place more emphasis on the physical attractiveness of potential mates than women do, particularly in long-term sexual relationships. evolutionary theorists have suggested that this is the case because male mate value (the total value of the characteristics that an individual possesses in terms of the potential contribution to his or her mate's reproductive success) is better predicted by social status and economic resources, ... | 2001 | 26192277 |
| effect of computer support on younger women with breast cancer. | assess impact of a computer-based patient support system on quality of life in younger women with breast cancer, with particular emphasis on assisting the underserved. | 2001 | 11520380 |
| pattern of focal gamma-bursts in chess players. | 2001 | 11493907 | |
| body image and dieting behavior in cystic fibrosis. | to examine the relationship between pulmonary function, nutritional status, body image, and eating attitudes in children with cystic fibrosis (cf) compared with healthy controls. | 2001 | 11389290 |
| illusory words created by repetition blindness: a technique for probing sublexical representations. | when two orthographically similar words are displayed using rapid serial visual presentation (rsvp), the repeated letters in the second critical word (w2) are not detected, leading to a deficit in reporting this word, a phenomenon known as repetition blindness (rb). the unrepeated letters in w2 do appear to be detected and available to feed activation to words compatible with them (morris & harris, 1999). when a fragment was strategically placed in the rsvp stream, as in grow throw ank, observer ... | 2001 | 11340856 |
| novice construction of chess memory. | novice acquisition of skilled recall of chess positions was studied in an experiment in which two novices studied a series of five hundred chess positions during a period of several months. they spent fifteen minutes to half an hour a day teaching themselves these positions. as a result their skill in recalling chess positions rose from sixteen percent to somewhere between forty to fifty percent. the learning curve proved to have a shape which indicates that in the beginning learning is very fas ... | 2001 | 11321637 |
| stabilization of isolated mixed-valence trimers in a novel nickel dithiolene complex with cf2 substituents. | the preparation of the novel paramagnetic nickel dithiolene complex ni(f2pdt)2-* (f2pdt2-: 2,2-difluoro-1,3-propanediyldithioethylene-1,2-dithiolate) and its x-ray crystal structure as n-bu4n+ salt are described. (n-bu4n)[ni(f2pdt)2] (2) crystallizes in the orthorhombic system, space group pna2(1) with a = 21.379(4) a, b = 8.9702(18) a, and c = 18.527(4) a. the radical anions are isolated from each other by the bulky n-bu4n+ cations and exhibit a curie-type magnetic behavior. two reversible redo ... | 2001 | 11304153 |
| visual span in expert chess players: evidence from eye movements. | the reported research extends classic findings that after briefly viewing structured, but not random, chess positions, chess masters reproduce these positions much more accurately than less-skilled players. using a combination of the gaze-contingent window paradigm and the change blindness flicker paradigm, we documented dramatically larger visual spans for experts while processing structured, but not random, chess positions. in addition, in a check-detection task, a minimized 3 x 3 chessboard c ... | 2001 | 11294228 |
| low-power water suppression by hyperbolic secant pulses with controlled offsets and delays (washcode). | a class of chemical-shift-selective (chess) water suppression (ws) schemes is presented in which the characteristic frequency-domain excitation profiles of "adiabatic" full-passage (afp) rf pulses are utilized for frequency-selective excitation of the water resonance. in the proposed ws schemes, dubbed washcode, hyperbolic secant (hs) pulses were used as the afp pulses. besides the high immunity of ws efficiency toward b(1) inhomogeneity, these sequences also exhibit extraordinary insensitivity ... | 2001 | 11531376 |
| complex of rat transthyretin with tetraiodothyroacetic acid refined at 2.1 and 1.8 a resolution. | the crystal structure of rat transthyretin (rttr) complex with 3,5,3',5'-tetraiodothyroacetic acid (t4ac) was determined at 1.8 a resolution with low temperature synchrotron data collected at chess. the structure was refined to r = 0.207 and rfree = 0.24 with the use of 8-1.8 a data. the additional 8000 reflections from the incomplete 2.1-1.8 data shell, included in the refinement, reduced the rfree index by 1.3%. structure comparison with the model refined against the complete 8-2.1 a data reve ... | 2001 | 11995998 |
| crystallization and preliminary x-ray analysis of the tumor metastasis factor p37. | p37, an outer-membrane bacterial protein from mycoplasma hyorhinis, is a molecule whose presence on the surface of many tumor cells correlates highly with increased neoplastic invasivity and metastasis. p37 was overexpressed in escherichia coli, purified by affinity chromatography and crystallized. useful single crystals for x-ray diffraction structural studies have been grown by oil-immersion methods from a solution of 40% peg 4000, 0.1 m ammonium bromide in a 0.1 m citrate buffer at ph 4.0. x- ... | 2002 | 12454480 |
| continuing progress in the chess game of aids treatment. | the sixth international congress on drug therapy in hiv infection was held november 17-21, 2002, in glasgow, scotland and the program included keynote lectures, plenary sessions, satellite symposia and poster sessions. more than 2,500 delegates, including physicians, community representatives researchers, members of the pharmaceutical industry and other health professionals, took part in the congress. highlights of the congress are discussed. (c) 2002 prous science. all rights reserved. | 2002 | 12677254 |
| a longitudinal study of the development of dieting among 7-17-year-old swedish girls. | to examine the extent to which the prevalence of self-reported dieting and the wish to be thinner changed in 7-15-year-old girls over a 3-year period, and to explore potential differences between cohorts recruited in 1995 and 1999. in addition, changes in eating attitudes (children's eating attitudes test [cheat]) were compared between 1995 and 1999. | 2002 | 11835295 |
| [evaluation of t(1)-weighted black blood imaging using triple inversion recovery]. | the black blood sequence, in which the blood signal is suppressed, fundamentally provides t(2)-weighted images. we developed a t(1)-weighted black blood sequence. this new sequence improved the triple ir sequence that uses three inversion pulses by continuously providing three inversion pulses. by so doing, the sequence lengthens the time from the third inversion pulse to data sampling. the new sequence sets the flip angle of the third inversion pulse to 95-110 degrees. consequently, the differe ... | 2002 | 12520219 |
| visuospatial abilities of chess players. | the extent to which the acquisition of expertise in knowledge-rich domains, such as chess, can be influenced by general individual characteristics, such as intelligence, has remained unclear. some previous studies with children have documented significant correlations between chess skill and performance on some psychometric tests, such as performance iq. however, we found no evidence for a correlation between chess skill and visual memory ability in a group of adult chess players (n = 36, age = ... | 2002 | 12519534 |