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Search Results: 1 - 10 of 167912 matches for " Benny E. Aney "
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Photochemistry of Styrene Oxide: A Triplet Pathway in the Singlet Excitation of a Monoaryl Oxirane  [PDF]
Benny E. Aney, Heiko Ihmels, Rick C. White
International Journal of Organic Chemistry (IJOC) , 2017, DOI: 10.4236/ijoc.2017.73020
Abstract: Direct photolysis and quenching experiments with styrene oxide support the existence of an efficient triplet photochemical pathway to benzyl radical formation. Similar photolytic behavior for styrene glycol carbonate strongly supports the 1,3-diradical, resulting from the scission of the benzylic C-O bond, as the geometric source of the triplet pathway. Primary photoproducts were determined by both NMR and HPLC analysis and we observed that toluene and bibenzyl were both primary photoproducts, not secondary photoproducts.
Comparison of Co-Current and Counter-Current Flow Fields on Extraction Performance in Micro-Channels  [PDF]
Subramaniam Pushpavanam, Benny Malengier
Advances in Chemical Engineering and Science (ACES) , 2012, DOI: 10.4236/aces.2012.22036
Abstract: Several applications such as liquid-liquid extraction in micro-fluidic devices are concerned with the flow of two immiscible liquid phases. The commonly observed flow regimes in these systems are slug-flow and stratified flow. The latter regime in micro-channels has the inherent advantage that separation of the two liquids at the exit is efficient. Recently extraction in a stratified counter-current flow has been studied experimentally and it has been shown to be more efficient than co-current flow. An analytical as well as a numerical method to determine the steady-state solution of the corresponding convection-diffusion equation for the two flow-fields is presented. It is shown that the counter-current process is superior to the co-current process for the same set of parameters and operating conditions. A simplified model is proposed to analyse the process when diffusion in the transverse direction is not rate limiting. Different approaches to determining mass transfer coefficient are compared. The concept of log mean temperature difference used in design of heat exchangers is extended to describe mass transfer in the system.
Discordant tumor response in the treatment of ALK-rearranged non-small cell lung cancer leads to the diagnosis of synchronous multiple primary lung cancer  [PDF]
Benny Johnson, Maged Khalil
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.21005
Abstract:


The advent of targeted molecular therapy against the EML4-ALK fusion gene is the latest therapeutic intervention for a subset of patients with non-small cell lung cancer (NSCLC). Crizotinib (Xalkori) is an orally available small molecule tyrosine kinase inhibitor proven in clinical trials to significantly impact progression free survival and overall response rate. We present a case of a 56-year-old male with NSCLC whose lack of a positive treatment response to this therapy led to the clinical suspicion and identification of the underdiagnosed entity known as synchronous multiple primary lung cancer (SMPLC).


Therapeutic Walks in Virtual Nature  [PDF]
Benny Rigaux-Bricmont
Advances in Aging Research (AAR) , 2018, DOI: 10.4236/aar.2018.76010
Abstract: Can the benefits of nature walks for psychological well-being and cognitive ability be replicated in a purely virtual environment? The private island of Natmoud was built in the virtual world of Second Life (SL) to see whether immersion in such an environment is possibly therapeutic (see Appendix). This exploratory study is based on a small convenience sample of SL residents who were invited by the author’s avatar to visit Natmoud island. The subjects were asked to comment in writing on their experience while there. Reading and analyzing these comments with TROPES semantic software allows us to identify the main factors contributing to a relaxing and comforting atmosphere with an analysis of word associations. The implicit hypothesis that a virtual representation of nature can be soothing is confirmed. We also find that wildlife—which is abundant on the island *—appears to be the main feature that catches the attention of walkers. Given that these verbatim transcripts from a small convenience sample reflect, with one exception, the emotions felt by women, the results cannot really be generalized. In the analyses, the anonymity of the avatars is preserved by using initials, even though in all the cases the participants consented to the reproduction of the emotions they expressed.
Photoreactions of cyclic sulfite esters: Evidence for diradical intermediates
Rick C. White,Benny E. Arney Jr.,Heiko Ihmels
Beilstein Journal of Organic Chemistry , 2012, DOI: 10.3762/bjoc.8.134
Abstract: The photochemistry of a phenyl and 1,2-diphenyl substituted sulfite ester is reported. The performance of photoreactions under relatively mild reaction conditions enables the detection of products that have not been observed in previous studies. It is concluded that, complementary to the initially proposed carbene intermediates, diradicals may also be considered.
Measures and Mismeasures of Scientific Quality
Sune Lehmann,Andrew D. Jackson,Benny E. Lautrup
Physics , 2005,
Abstract: We present a general Bayesian method for quantifying the statistical reliability of one-dimensional measures of scientific quality based on citation data. Two quality measures used in practice -- ``papers per year'' and ``Hirsch's $h$'' -- are shown to lack the accuracy and precision necessary to be useful. The mean, median and maximum number of citations are on the other hand reliable and permit accurate predictions of future author performance on the basis of as few as 50 publications.
Comment: Citation Statistics
Sune Lehmann,Benny E. Lautrup,Andrew D. Jackson
Computer Science , 2009, DOI: 10.1214/09-STS285B
Abstract: We discuss the paper "Citation Statistics" by the Joint Committee on Quantitative Assessment of Research [arXiv:0910.3529]. In particular, we focus on a necessary feature of "good" measures for ranking scientific authors: that good measures must able to accurately distinguish between authors.
Alteration of Major Insulin Signaling Molecules by Chronic Ethanol in Hypertensive Vascular Smooth Muscle Cells of Rats  [PDF]
Sparkle D. Williams, Benny Washington
CellBio (CellBio) , 2013, DOI: 10.4236/cellbio.2013.24021
Abstract:

Insulin resistance is an important risk factor in the development of cardiovascular diseases such as hypertension and atherosclerosis. However, despite its importance, the specific role of insulin resistance in the etiology of these diseases is poorly understood. At the same time, ethanol (ETOH) is a potent vasoconstrictor that primarily induces down regulation of mitogen activated protein kinases (MAPKs) which could exacerbate insulin resistance and possibly lead to cardiovascular diseases. This article describes how chronic ETOH exposure interferes with insulin signaling in hypertensive vascular smooth muscle cells (HVSMCs) which leads to the alteration of MAPKs, the major signaling molecules. Elevated (50 - 800 mM) chronic exposure (24 hr) of HVSMCS to ETOH prior to insulin stimulation decreased insulin-induced ERK 1/2 (MAPKs) and AKT expression. Similar experiments were conducted using normotensive cells from rat. These cells showed reductions in insulin-induced ERK 1/2 phosphorylation as well, but only at higher concentrations of ETOH (400 - 800 mM). These alterations in insulin signaling could provide an alternative molecular mechanism that may increase the risk of insulin resistance, thus increasing the possibility of cardiovascular diseases.

Os conteúdos das vis?es da ayahuasca
Shanon, Benny;
Mana , 2003, DOI: 10.1590/S0104-93132003000200004
Abstract: this paper examines the contents of the visual hallucinations induced by the amazonian psychotropic brew ayahuasca. it is part of a comprehensive phenomenological investigation attempting to study ayahuasca from a cognitive-psychological perspective. (so far, practically all studies of ayahuasca pertained either to the natural sciences or to anthropology.) comparative quantitative analyses reveal that some specific content items are especially prevalent in ayahuasca visions, and that these are encountered in the reports of informants from different personal and socio-cultural backgrounds. theoretically, the findings are discussed in light of both psychological and anthropological considerations.
Os conteúdos das vis es da ayahuasca
Shanon Benny
Mana , 2003,
Abstract: Este artigo examina os conteúdos das alucina es visuais induzidas pela infus o psicotrópica ayahuasca. Ele faz parte de uma investiga o fenomenológica mais ampla que busca estudar a ayahuasca de uma perspectiva psicológico-cognitiva. (Até agora, quase todos os estudos da ayahuasca partiram das ciências naturais ou da antropologia.) Análises comparativas quantitativas revelam que certos itens de conteúdo específico s o especialmente prevalescentes em vis es da ayahuasca e se reencontram em relatos de informantes de diferentes origens socioculturais. Os resultados s o discutidos teoricamente à luz de considera es tanto psicológicas como antropológicas.
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