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Adam M Kubas, Daniel Berger, Harald Oberhofer, Dimitrios Maganas, Karsten Reuter, Frank Neese
Coupled cluster theory with single, double and perturbative triple excitations (CCSD(T)) is widely considered to be the 'gold standard' of ab initio quantum chemistry. Using the domain-based pair natural orbital local correlation concept (DLPNO-CCSD(T)), these calculations can be performed on systems with hundreds of atoms at an accuracy of about 99.9% of the canonical CCSD(T) method. This allows for ab initio calculations providing reference adsorption energetics at solid surfaces with an accuracy approaching 1 kcal/mol...
October 3, 2016: Journal of Physical Chemistry Letters
Tanapon Phenrat, Pimpawat Teeratitayangkul, Isarawut Prasertsung, Rattapoohm Parichatprecha, Peerapong Jitsangiam, Narong Chomchalow, Siriwan Wichai
This research evaluated the feasibility of using vetiver plantlets (Vetiveria zizanioides (L.) Nash) on a floating platform with aeration to degrade phenol (500 mg/L) in illegally dumped industrial wastewater (IDIWW). The IDIWW sample was from the most infamous illegal dumping site at Nong Nae subdistrict, Phanom Sarakham district, Chachoengsao province, Thailand. Laboratory results suggested that phenol degradation by vetiver involves two phases: Phase I, phytopolymerization and phyto-oxidation assisted by root-produced peroxide (H2O2) and peroxidase (POD), followed by phase II, a combination of phase I with enhanced rhizomicrobial degradation...
September 24, 2016: Environmental Science and Pollution Research International
Séverine Martin-Lannerée, Sophie Halliez, Théo Z Hirsch, Julia Hernandez-Rapp, Bruno Passet, Céline Tomkiewicz, Ana Villa-Diaz, Juan-Maria Torres, Jean-Marie Launay, Vincent Béringue, Jean-Luc Vilotte, Sophie Mouillet-Richard
The prion protein is infamous for its involvement in a group of neurodegenerative diseases known as Transmissible Spongiform Encephalopathies. In the longstanding quest to decipher the physiological function of its cellular isoform, PrP(C) , the discovery of its participation to the self-renewal of hematopoietic and neural stem cells has cast a new spotlight on its potential role in stem cell biology. However, still little is known on the cellular and molecular mechanisms at play. Here, by combining in vitro and in vivo murine models of PrP(C) depletion, we establish that PrP(C) deficiency severely affects the Notch pathway, which plays a major role in neural stem cell maintenance...
September 19, 2016: Stem Cells
Stefanie Hechler, Franz J Neyer, Thomas Kessler
People remember uncooperative individuals better than cooperative ones. We hypothesize that this is particularly true when uncooperative individuals belong to one's ingroup, as their behavior violates positive expectations. Two studies examined the effect of minimal group categorization on reputational memory of the social behavior of particular ingroup and outgroup members. We manipulated uncooperative behavior as the unfair sharing of resources with ingroup members (Study 1), or as descriptions of cheating (Study 2)...
August 25, 2016: Cognition
Lok R Pokhrel, Nicholas Ettore, Zachary L Jacobs, Asha Zarr, Mark H Weir, Phillip R Scheuerman, Sushil R Kanel, Brajesh Dubey
Infamous for "Mad hatter syndrome" and "Minamata disease", mercury (Hg) is ranked high on the Agency for Toxic Substances and Disease Registry's priority list of hazardous substances for its potent neurologic, renal, and developmental toxicities. Most typical exposures are via contaminated water and food. Although regulations and advisories are exercised at various levels, Hg pollution from both natural and anthropogenic sources has remained a major public health and safety concern. Rapid detection of solvated aqueous Hg(2+) ions at low levels is critical for immediate response and protection of those who are vulnerable (young children, pregnant and breast-feeding women) to acute and chronic exposures to Hg(2+)...
August 15, 2016: Science of the Total Environment
Wilson R Lourenço
The aim of this contribution is to bring general information on the classification and in particular on the specific identification of scorpion species dangerous to humans. Several generic groups are taken into consideration, but the Neotropical genus Tityus C. L. Koch, 1836 is used as a major example. The content of this paper is mostly addressed to non-specialists whose research embraces scorpions in several fields such as venom toxins and public health. Although efforts have been made in the last 20 years to create better links between 'true scorpion experts' and non-specialists who use scorpions in their research, such exchanges had never led to a consensus among those different branches of biological and medical research...
2016: Journal of Venomous Animals and Toxins Including Tropical Diseases
Katarina Starkl Renar, Jernej Iskra, Igor Križaj
Recognized since antiquity, malaria is one of the most infamous and widespread infectious diseases in humans and, although the death rate during the last century has been diminishing, it still accounts for more than a half million deaths annually. It is caused by the Plasmodium parasite and typical symptoms include fever, shivering, headache, diaphoresis and nausea, all resulting from an excessive inflammatory response induced by malarial toxins released into the victim's bloodstream. These toxins are hemozoin and glycosylphosphatidylinositols...
September 1, 2016: Toxicon: Official Journal of the International Society on Toxinology
Lech Kaczmarczyk, Ylva Mende, Branko Zevnik, Walker S Jackson
The mammalian prion protein (PrP, encoded by Prnp) is most infamous for its central role in prion diseases, invariably fatal neurodegenerative diseases affecting humans, food animals, and animals in the wild. However, PrP is also hypothesized to be an important receptor for toxic protein conformers in Alzheimer's disease, and is associated with other clinically relevant processes such as cancer and stroke. Thus, key insights into important clinical areas, as well as into understanding PrP functions in normal physiology, can be obtained from studying transgenic mouse models and cell culture systems...
2016: PloS One
A Mulchrone, M Shokoueinejad, J Webster
Although almost completely unknown half a century ago, sleep disorders are gaining recognition as major issues to public health due to their growing prevalence and dire societal consequences. Despite being linked to several infamous catastrophic events such as Chernobyl, it is estimated that 90% of sufferers fail to get diagnosed and receive treatment, and a significant portion of the ones that do are often non-compliant due to the side effects of current treatments. This article presents a review of the current standard treatment for central sleep apnea, and investigates the advantages and possible consequences of using inspired carbon dioxide (CO2) as an alternative treatment option...
May 2016: Physiological Measurement
Barron H Lerner, Arthur L Caplan
Bioethics has become a common course of study in medical schools, other health professional schools, and graduate and undergraduate programs. An analysis of past ethical scandals, as well as the bioethics apparatus that emerged in response to them, is often central to the discussion of bioethical questions. This historical perspective on bioethics is invaluable and demonstrates how, for example, the infamous Tuskegee syphilis study was inherently racist and how other experiments exploited mentally disabled and other disadvantaged persons...
April 19, 2016: Annals of Internal Medicine
Saswati Chand, Kevin O'Hayer, Fernando F Blanco, Jordan M Winter, Jonathan R Brody
Pancreatic cancer (pancreatic ductal adenocarcinoma, PDA) is infamously moving to the top of the list as one of the most lethal cancers with an overall 5 year survival rate of 7%. Multiple genomic-based and molecular characterization studies of PDA specimens and established animal models have provided the field with multiple targets and a progression model of this disease. Still, to date, the best therapeutic options are surgery and combination cytotoxic therapies. In general, even in the best case scenario (i...
2016: International Journal of Biological Sciences
Sara Aljohani, Maria Bustillo, Sergey Pisklakov
On January 24, 1848, delirious from chloroform, Horace Wells rushed from his house and office on 120 Chambers St into the street and threw acid on 2 alleged prostitutes. He was arrested and committed to New York's infamous Tombs Prison (currently Manhattan Detention Complex), where he committed suicide. Remodeled and reconstructed, this house, 120 Chambers St, is still standing in Tribeca District.
January 2016: Journal of Anesthesia History
Aharona Gutman, Yehuda Shoenfeld
Bisphenol A (BPA) is a monomer found in plastic products used daily for the storage and consumption of food and beverages, such as plastic bottles, containers, and even toys. The molecule leaches out into the food, increasingly if exposed to warm temperatures and high acidity. BPA is known for many negative effects on the human body; for instance it acts as an xenoestrogen and influences fertility and gestation and might also have carcinogenic effects, causing breast and prostate cancer. Although it has not yet been proven as a direct cause of autoimmunity, many of the effects of BPA can be related to the pathogenesis of autoimmune disease (AID)...
November 2015: Harefuah
Lei Wang, Ye-Hua Liu, Mauro Iazzi, Matthias Troyer, Gergely Harcos
We present a guiding principle for designing fermionic Hamiltonians and quantum Monte Carlo (QMC) methods that are free from the infamous sign problem by exploiting the Lie groups and Lie algebras that appear naturally in the Monte Carlo weight of fermionic QMC simulations. Specifically, rigorous mathematical constraints on the determinants involving matrices that lie in the split orthogonal group provide a guideline for sign-free simulations of fermionic models on bipartite lattices. This guiding principle not only unifies the recent solutions of the sign problem based on the continuous-time quantum Monte Carlo methods and the Majorana representation, but also suggests new efficient algorithms to simulate physical systems that were previously prohibitive because of the sign problem...
December 18, 2015: Physical Review Letters
Matt A White, Phil R Bell, Alex G Cook, Stephen F Poropat, David A Elliott
Megaraptorid theropods were an enigmatic group of medium-sized predatory dinosaurs, infamous for the hypertrophied claw on the first manual digit. Megaraptorid dentition is largely restricted to isolated teeth found in association with skeletal parts; however, the in situ maxillary dentition of Megaraptor was recently described. A newly discovered right dentary pertaining to the Australovenator holotype preserves in situ dentition, permitting unambiguous characterisation of the dentary tooth morphology. The new jaw is virtually complete, with an overall elongate, shallow profile, and fifteen visible in situ teeth at varying stages of eruption...
2015: PeerJ
Cyril D'Cruz
No abstract text is available yet for this article.
November 2015: Pediatric and Developmental Pathology
Nicole Youngman
Much of the flood risk faced by coastal and riparian populations worldwide is manufactured rather than strictly natural--the outcome of human development projects involving municipal growth machines. This paper details the impacts of the hurricane of September 1947 on New Orleans, Louisiana, United States, and its relationship with the urban development and expansion efforts undertaken during and after the Second World War of 1939-45. New Orleans' newest drainage and shipping canals, which were a major part of its mid-twentieth century development initiative, funnelled the storm surge into the city, a pattern that would repeat itself in subsequent years...
October 2015: Disasters
Paul D Brinkman
Edward Drinker Cope, a brilliant and prolific American naturalist, was notoriously combative. His infamous feud with Yale paleontologist Othniel Charles Marsh, which played out publicly on the front pages of the New York Herald, was one of the worst scandals of nineteenth-century American science. Cope did not fight exclusively with his pen, however. In 1888, for example, he traded blows with his close friend Persifor Frazer over a matter of honor at the entrance of Philadelphia's hallowed Philosophical Hall, just as a meeting of the American Philosophical Society was getting under way...
September 2015: Endeavour
Tamar Stein, Jochen Autschbach, Niranjan Govind, Leeor Kronik, Roi Baer
Perdew et al. discovered two different properties of exact Kohn-Sham density functional theory (DFT): (i) The exact total energy versus particle number is a series of linear segments between integer electron points. (ii) Across an integer number of electrons, the exchange-correlation potential "jumps" by a constant, known as the derivative discontinuity (DD). Here we show analytically that in both the original and the generalized Kohn-Sham formulation of DFT the two properties are two sides of the same coin...
December 20, 2012: Journal of Physical Chemistry Letters
Vartika Singh, Sundeep K Pandita, Rajni Tewari, Peter J van Hengstum, Suresh S K Pillai, Deepa Agnihotri, Kamlesh Kumar, G D Bhat
Exceptionally well-preserved organic remains of thecamoebians (testate amoebae) were preserved in marine sediments that straddle the greatest extinction event in the Phanerozoic: the Permian-Triassic Boundary. Outcrops from the Late Permian Zewan Formation and the Early Triassic Khunamuh Formation are represented by a complete sedimentary sequence at the Guryul Ravine Section in Kashmir, India, which is an archetypal Permian-Triassic boundary sequence. Previous biostratigraphic analysis provides chronological control for the section, and a perspective of faunal turnover in the brachiopods, ammonoids, bivalves, conodonts, gastropods and foraminifera...
2015: PloS One
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