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Search Results: 1 - 10 of 15719 matches for " Sam Singh "
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Resonating Valence Bond Quantum Monte Carlo: Application to the ozone molecule
Sam Azadi,Ranber Singh,Thomas D. Kühne
Physics , 2015,
Abstract: We study the potential energy surface of the ozone molecule by means of Quantum Monte Carlo simulations based on the resonating valence bond concept. The trial wave function consists of an antisymmetrized geminal power arranged in a single-determinant that is multiplied by a Jastrow correlation factor. Whereas the determinantal part incorporates static correlation effects, the augmented real-space correlation factor accounts for the dynamics electron correlation. The accuracy of this approach is demonstrated by computing the potential energy surface for the ozone molecule in three vibrational states: symmetric, asymmetric and scissoring. We find that the employed wave function provides a detailed description of rather strongly-correlated multi-reference systems, which is in quantitative agreement with experiment.
Anhamonic finite temperature effects on the Raman and Infrared spectra to determine the crystal structure phase III of solid molecular hydrogen
Ranber Singh,Sam Azadi,Thomas D. Kühne
Physics , 2013, DOI: 10.1103/PhysRevB.90.014110
Abstract: We present theoretical calculations of the Raman and IR spectra, as well as electronic properties at zero and finite temperature to elucidate the crystal structure of phase III of solid molecular hydrogen. We find that anharmonic finite temperature are particularly important and qualitatively influences the main conclusions. While P6$_3$/m is the most likely candidate for phase III at the nuclear ground state, at finite temperature the C2/c structure appears to be more suitable.
Synthesis of some new Acid hydrazones and their activity against Mycobacterium
Srivsatava Ritu,Pandeya S.N.,Singh A.K.,Anantham Sam
International Journal of Chemical Research , 2010,
Abstract: Twelve aryl acetic acid hydrazones were synthesized and tested first time for their antimicrobialactivity. The structures of all these compounds were confirmed with the help of IR, 1HNMR, Mass spectraalong with elemental analysis. Some of the target compounds show moderate activity against H37 RV strainof Mycobacterium tuberculosis at a concentration of 10μM.
Psychology as an Associational Science: A Methodological Viewpoint  [PDF]
Sam S. Rakover
Open Journal of Philosophy (OJPP) , 2012, DOI: 10.4236/ojpp.2012.22023
Abstract: Unlike the sciences (physics), psychology has not developed in any of its areas (such as perception, learning, cognition) a top-theory like Newtonian theory, the theory of relativity, or quantum theory in physics. This difference is explained by a methodological discrepancy between the sciences and psychology, which centers on the measurement procedure: in psychology, measurement units similar to those in physics have not been discovered. Based on the arguments supporting this claim, a methodological distinction is made between the sciences and psychology as an associational science. It is suggested that that these two kinds of science generate two different classes of technologies. The possibility that in psychology there is a connection between the issue of measurement and the unsolved consciousness/brain problem is discussed.
A Case of Meningitis? What’s Your Diagnosis?  [PDF]
Pollach Gregor, Kampondeni Sam
Open Journal of Modern Neurosurgery (OJMN) , 2012, DOI: 10.4236/ojmn.2012.24014
Abstract: The five year old, somnolent girl from Mozambique with no medical history was presented with fever, neckstiffness, headaches, an almost complete paraplegia and a septic picture. Malaria parasites and HIV testing was negative. The lumbal puncture revealed staphylococcus. Subsequently a MRI scan showed no sign of meningitis but an extensive posterior epidural collection from C3 to the level of S1. Moreover it showed a vertebral osteomyelitis at L1. Bacteria in CSF were seen as an artefact and the child was treated by multilevel (purely) epidural punctures with drainage, rinsing and instillation of ceftriaxon. The epidural puncture proved acid fast bacilli in the pus, so that an anti-tuberculotic therapy was given. The child recovered quickly from sepsis and was able to walk several steps without help after three months.
HIV, Stigma, and Rates of Infection: More Complicated than Reidpath and Chan Suggest
Sam Singer
PLOS Medicine , 2007, DOI: 10.1371/journal.pmed.0040051
Abstract:
The Interaction Between Dietary Valine and Tryptophan Content and Their Effect on the Performance of Piglets
Sam Millet
Animals , 2012, DOI: 10.3390/ani2010076
Abstract: Four experimental diets for newly weaned pigs were formulated: (1) low valine and low tryptophan; (2) low valine and high tryptophan; (3) high valine and low tryptophan and (4) high valine and high tryptophan. Dietary standardized ileal digestible (SID) lysine content was 1.06 g/kg. The SID valine to SID lysine ratio was 0.58 and 0.67 for the low and high valine diets, respectively, and SID tryptophan to SID lysine ratios were 0.19 and 0.22 for the low and high tryptophan diets, respectively. In total, 64 pens of 6 pigs (3 barrows and 3 gilts) were divided over the four experimental treatments. No interaction between dietary supply of valine and tryptophan was observed ( P > 0.1 for all parameters). Increasing the dietary valine content increased the daily feed intake, daily gain and gain:feed ( P < 0.001 for all three parameters). Increasing the dietary tryptophan content improved gain:feed during the first 2 weeks ( P < 0.05) and overall ( P < 0.05). Valine supply had a greater effect on performance results than tryptophan supply. It may thus be beneficial to provide a diet with an optimal dietary concentration of valine even if other amino acids are at suboptimal dietary levels.
Analysis of 44 Cases before the Landlord and Tenant Board Involving Bed Bug Infestations in Ontario, Canada: Focus on Adjudicator Decisions Based on Entomological/Pest Management Evidence and Accountability under the Residential Tenancy Act and Other Applicable Legislation
Sam Bryks
Insects , 2011, DOI: 10.3390/insects2030343
Abstract: The resurgence of bed bugs in major urban centres in North America has resulted in conflict between landlords and tenants. This is commonly focused on attribution of blame for source of infestation, on responsibility, on costs for preparation, treatment and losses, and for compensation as rent abatement and/or alternative temporary housing. In Ontario, Canada, these issues are often decided by adjudicators at the Landlord and Tenant Board hearing claims, counter-claims and defense by legal representation (lawyers and paralegals) as well as through mediation. Evidence in these hearings may include photographs, invoices for costs as well as testimony by tenants, landlords and “expert witnesses” who are most often pest control firms representing their landlord clients. A total of 44 Landlord and Tenant Board adjudicated cases available online were analyzed. The analysis included elements of the decisions such as adjudicator, claimant (landlord or tenant), basis of claim, review of evidence, amount of claim, amount awarded, and evaluation of the quality of the evidence. The results of the analysis of these findings are discussed. Recommendations for improvement of adjudicator decisions on the basis of knowledge of bed bug biology and Integrated Pest Management best practices are presented as well as the importance of education of tenants and landlords to a process of mutual trust, support and accountability.
Good news on rotavirus vaccine?
Sam Jaffe
Genome Biology , 2004, DOI: 10.1186/gb-spotlight-20040713-01
Abstract: In July of 1999, the Centers for Disease Control issued an alert about what appeared to be a statistically significant increase in intussusception - a potentially dangerous condition in which the small intestine collapses in on itself - that occurred in the days following vaccination. A cluster of 15 cases of intussusception was identified in infants who recently had the vaccine.According to data analyzed by Lone Simonsen, a National Institutes of Health researcher, more than 80% of all cases of intussusception events that were associated with the vaccine happened with babies who received the vaccine after 4 months of age, which was at the far end of the manufacturer's recommendations. That's because, Simonsen told us, when the vaccine first appeared, many doctors were "catching up" with older babies who didn't have a chance to get the vaccine in the months before its approval. "You can't talk about the intussusception risks of RotaShield without talking about the age of the child at first dose," Simonsen told attendees at the Sixth International Rotavirus Symposium here on Wednesday (July 7) when she presented the as-yet unpublished data.Another important element in Simonsen's appraisal of the 4-year-old data is the fact that overall intussusception rates of children given the rotavirus vaccine were the same as the baseline expectation of otherwise healthy children in the first year of life - about 1 in 3000. That suggests that RotaShield was "shaking the apple tree," Simonsen said. "RotaShield appears to have triggered an intussusception response in infants who probably would have had it anyway," Simonsen said. "It just shook out all the bad apples earlier."The data caused some doctors in the audience to reassess their view of RotaShield. "If a vaccine triggers intussusception in infants who are going to get it anyway, that means it's not only preventing rotavirus but it's providing much safer and more watchful conditions for the intussusception to occur," Paul Of
Making "Uirapuru": a musical quest in the Brazilian Rain Forest
Zebba, Sam;
Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas , 2010, DOI: 10.1590/S1981-81222010000100012
Abstract: sixty years ago the author, an israeli film student at the university of california, los angeles, set out to make a film based on a brazilian indian legend which had been set to music by heitor villa-lobos (1887-1959). filming was carried out among urubú-ka'apor indians in the state of maranh?o. in belém, capital of pará, he was joined by german anthropologist peter paul hilbert (1914-1989) of the goeldi museum on an adventurous and creative expedition, culminating in a prize-winning art-documentary film and a life-long friendship between the two.
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