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Results 251 - 300 of 1666
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Wood Brandon C - - 2012
We perform density-functional theory calculations on model surfaces to investigate the interplay between the morphology, electronic structure, and chemistry of oxygen- and hydroxyl-rich surfaces of InP(001) and GaP(001). Four dominant local oxygen topologies are identified based on the coordination environment: M-O-M and M-O-P bridges for the oxygen-decorated surface; and M-[OH]-M ...
Sabass Benedikt - - 2012
Active diffusiophoresis-swimming through interaction with a self-generated, neutral, solute gradient-is a paradigm for autonomous motion at the micrometer scale. We study this propulsion mechanism within a linear response theory. First, we consider several aspects relating to the dynamics of the swimming particle. We extend established analytical formulae to describe small ...
Philpott Michael R - - 2012
The three step auf bau of a triangular polyaromatic protrusion attached to a larger parent hexagonal shaped graphene nanodot (GND) is described and the dichotomy between intrinsic protrusion localized magnetism and parent extended zigzag edge magnetism is explored using ab initio density functional theory calculations of spin and charge distributions ...
Tan Hong Kee - - 2012
It has been demonstrated in our studies that the intrinsic curvature of DNA can be easily interrupted by low concentrations of chloroquine and ethidium bromide. In addition, the changes of DNA curvature caused by varying the concentration of these two DNA intercalators can be readily verified through using an atomic ...
Navin J K - - 2012
Effusive molecular beam measurements of angle-resolved thermal dissociative sticking coefficients for CH(4) impinging on a Pt(111) surface, at a temperature of 700 K, are reported and compared to theoretical predictions. The reactivity falls off steeply as the molecular angle of incidence increases away from the surface normal. Successful modeling of ...
Adams Christopher L - - 2012
We present low-energy velocity map photoelectron imaging results for bare and Ar-solvated 1-nitropropane and 1-nitrobutane anions. We report the adiabatic electron affinity of 1-nitropropane as (223 ± 6) meV and that of 1-nitrobutane as (240 ± 6 meV). The vertical detachment energies of these two species are found to be ...
Zhang Bo - - 2012
We have used density functional theory (DFT) employing several different exchange-correlation functionals (PW91, PBE, PBEsol, TPSS, and revTPSS) coupled with lattice dynamics calculations to compute the thermodynamics of CO(2) absorption∕desorption reactions for selected transition metal oxides, (TMO), and hydroxides, TM(OH)(2), where TM = Mn, Ni, Zn, and Cd. The van't ...
Baik Su Jung SJ Department of Internal Medicine, Ewha Medical Research Institute, School of Medicine, Ewha Womans University, 911-1 Mokdong, Seoul 158-710, South - - 2012
To investigate the seroprevalence of Helicobacter pylori (H. pylori) and its relationship to nutritional factors in female Vietnamese immigrants to Korea. A total of 390 female immigrants from Vietnam and 206 Korean male spouses participated in the study. Blood samples from 321 female immigrants and 201 Korean male spouses were ...
Ramia Jose M JM Department of Surgery, Hepato-Bilio-Pancreatic Surgery Unit, Guadalajara University Hospital, Guadalajara 19002, Spain. - - 2012
To investigate the morbidity, mortality, recurrence and technical aspects of two distinct surgical strategies that were implemented in successive periods. Ninty-two patients with 113 cysts underwent surgical procedures. The study was divided into 2 periods. Data from first period (P1) were compiled retrospectively. The surgical strategy was conservative surgery. The ...
Silverstein Daniel W - - 2012
A comprehensive vibronic coupling model based on the time-dependent wavepacket approach is derived to simulate linear optical processes, such as one-photon absorbance and resonance Raman scattering, and nonlinear optical processes, such as two-photon absorbance and resonance hyper-Raman scattering. This approach is particularly well suited for combination with first-principles calculations. Expressions ...
Ryabov Artem - - 2012
We investigate a diffusive motion of a system of interacting Brownian particles in quasi-one-dimensional micropores. In particular, we consider a semi-infinite 1D geometry with a partially absorbing boundary and the hard-core inter-particle interaction. Due to the absorbing boundary the number of particles in the pore gradually decreases. We present the ...
Zhang Qing Q Department of Internal medicine, Clinical Medical college of Yangtze University, Jingzhou 434000, Hubei Province, China. - - 2012
Acute pancreatitis is an inflammatory disease characterized by local tissue injury which can trigger a systemic inflammatory response. So vascular complications of pancreatitis are a major cause of morbidity and mortality. Pulmonary embolism in acute pancreatitis has been reported to be very rare. We reported a case of pulmonary embolism ...
Schirin-Sokhan Ramin R Department of Medicine III, University Hospital Aachen (RWTH), Aachen 52074, - - 2012
To evaluate whether contrast enhanced ultrasound (CEUS) might also be used for response prediction and early response evaluation in patients receiving bevacizumab based chemotherapy for metastasized colorectal cancer. Thirty consecutive patients with non primary resectable liver metastases from colorectal cancer underwent CEUS before treatment (CEUS date 1) and before the ...
Shew Chwen-Yang - - 2012
Several single-modal Debye correlation functions to approximate part of the overall Debey correlation function of liquids are closely examined for elucidating their behavior in the corresponding spin echo small angle neutron scattering (SESANS) correlation functions. We find that the maximum length scale of a Debye correlation function is identical to ...
Mebs Stefan - - 2012
The experimental electron density of sumanene, C(21)H(12), was extracted from a high resolution X-ray data set measured at 100 K and topologically analyzed. In addition to bond topological and atomic properties, information about the density distribution between adjacent molecules, which show close CC approaches of ∼3.4 Å within the columnar ...
Kwon Yun-Ju - - 2012
Flavimycins A (1) and B (2), novel dimeric 1,3-dihydroisobenzofurans, were isolated as inhibitors of peptide deformylase from cultures of Aspergillus flavipes. Their chemical structures were established by NMR and MS data analysis. Compounds 1 and 2 exist as epimeric mixtures at C-1 through fast hemiacetal-aldehyde tautomerism. Compounds 1 and 2 ...
Dong Ke - - 2012
Eleven new dibenzocyclooctadiene lignans, polysperlignans A-K (1-11), and eight known analogues (12-19) were isolated from the stems of Kadsura polysperma. Their structures and absolute configurations were established using a combination of MS, NMR, CD, and single-crystal X-ray diffraction techniques. Selected compounds were evaluated for activity against β-amyloid- or hydrogen peroxide-induced ...
- - 2012
The Department of Veterans Affairs (VA) is amending its Schedule for Rating Disabilities by updating the schedule of ratings for the hemic and lymphatic systems to include AL amyloidosis. This regulatory action is necessary to add AL amyloidosis as one of the disease conditions and establish criteria for disability evaluation ...
- - 2012
In a notice of proposed rulemaking published in the Federal Register on March 21, 2011, the Department of Health and Human Services (HHS) proposed to treat chronic lymphocytic leukemia (CLL) as a radiogenic cancer under the Energy Employees Occupational Illness Compensation Program Act of 2000 (EEOICPA) (76 FR 15268). Under ...
- - 2012
The Food and Drug Administration (FDA) is adopting as a final rule, without change, the interim final rule that issued regulations permitting FDA Center Directors to grant exceptions or alternatives to certain regulatory labeling requirements applicable to human drugs, biological products, or medical devices that are or will be included ...
Lee Sang Hyub - - 2012
The prognosis of pancreatic ductal adenocarcinoma (PDAC) remains dismal even after complete resection, with most recurrences occurring within 1-2 years postoperatively. Adenosine triphosphate (ATP)-binding cassette (ABC) transporters have been demonstrated to play major roles in multidrug resistance (MDR) of cancers. In this study, we evaluated the expression statuses and the clinical ...
- - 2012
The Food and Drug Administration (FDA) is amending certain of its general regulations to include tobacco products, where appropriate, in light of FDA's authority to regulate these products under the Family Smoking Prevention and Tobacco Control Act (Tobacco Control Act). With these amendments, tobacco products are subject to the same ...
Kwon Hyuck Hoon - - 2012
In a subgroup of patients suffering from atopic dermatitis (AD), treatment is quite difficult even after taking oral immunosuppressants. High-dose intravenous immunoglobulin (IVIG) treatment has been reported to be beneficial for them in a few uncontrolled trials. Herein we report a case of intractable AD in a 5-year-old girl who ...
Kalesan Bindu B Institute of Social and Preventive Medicine, University of Bern, and Clinical Trials Unit, Department of Cardiology, Bern University Hospital, Bern, - - 2012
The goal of this study was to compare the long-term clinical outcome between everolimus-eluting stent (EES) and sirolimus-eluting stent (SES) in patients with acute coronary syndromes (ACS). EES have not been directly compared with SES in ACS patients to date. Between 2004 and 2009, 1,746 consecutive ACS patients (ST-segment elevation ...
Carness Jeffrey M - - 2012
The effectiveness of the intraosseous (IO) route for fluid resuscitation remains uncertain. This study compares IO infusion rates and estimated volume expansion using clinically relevant infusion pressures with lactated Ringer's (LR) and hetastarch (HES). IO needles were placed in the sternum or tibia for infusion of HES and LR in ...
Yoon Yong Han - - 2012
A large cell neuroendocrine carcinoma (LCNEC) of the thymus is a very rare malignant tumor that has a very poor prognosis. The detailed clinical features of LCNEC are still unknown, including the long term prognoses and the definitive modalities of the treatment for LCNEC of the thymus. We are reporting ...
Shin Jin Young - - 2012
A high serum uric acid (SUA) level is a known risk factor for cardiovascular disease. However, little is known about the relationship between arterial stiffness and uric acid in healthy subjects with a normal SUA level. We assessed whether a high-normal uric acid level increased arterial stiffness by measuring brachial-ankle ...
Kang Jun Goo - - 2012
The current recommendations for the treatment of obese people include increased physical activity and reduced calories intake. When the behavioral approach is not sufficient, a pharmacologic treatment is recommended. In past years, numerous drugs have been approved for the treatment of obesity; however, most of them have been withdrawn from ...
Viswanathan Karthik - - 2012
Cardiac troponins have been the biomarkers of choice for the diagnosis of acute coronary syndrome (ACS) for over a decade. There has, however, been considerable interest over the last two decades for newer biomarkers that would bring added value to the measurement of troponin such as the provision of prognosis ...
Laszlo Roman - - 2012
Background: Box isolation of the posterior left atrium is one surgical or catheter ablative approach for treating atrial fibrillation (AF). In such cases, incomplete transmurality or recovery of pulmonary vein conduction after the application of various ablative techniques is considered the main reason for the recurrence of postprocedural arrhythmia. The ...
Tinti F - - 2012
In the past decades, advances in immunosuppression, organ preservation, surgical techniques and better management of post-transplantation complications have led to improvement in survival of liver transplant patients. Such extended survival of liver graft recipients in their fifties and sixties has resulted in a greater prevalence of complications, in particular chronic ...
Jin Mu Hyun - - 2012
The extracellular matrix (ECM) produced by dermal fibroblasts supports skin structure, and degradation and/or reduced production of ECM are the main causes of wrinkle formation. The aim of this study was to identify the active ingredient that enhances ECM production in dermal fibroblasts. Polarity-based fractionation was used to isolate the ...
Tezias Sotirios S - - 2012
We have previously identified a DNA silent region located downstream of the 3'-end of the β(major) globin gene (designated B1-559) that contains a B1 retrotransposon, consensus binding sites for erythroid specific transcription factors and shares the capacity to act as promoter in hematopoietic cells interacting with β-globin gene LCR sequences ...
Lee Sang Ah - - 2012
Fibroblast growth factor 21 (FGF21) was originally identified as a paroxysm proliferator activated receptor-α target gene product and is a hormone involved in metabolic regulation. The purpose of this study was to investigate the diurnal variation of serum FGF21 concentration in obese and non-obese healthy volunteers. Blood samples were collected ...
O'Leary Rae - - 2012
The purpose of this article is to better understand asthma triggers and possible causes of exacerbations among BREATHE participants on the Cheyenne River Indian Reservation in western South Dakota. To qualify for enrollment, participants had to have physician-diagnosed asthma, be uncontrolled and have persistent symptoms. Participants were asked to identify ...
Shih Yu-Jen - - 2012
Aneurysm of the left atrial appendage is extremely rare, and afflicted patients most commonly present with atrial tachyarrhythmia or thromboembolism. For these patients, resection of the aneurysm is the recommended and preferred therapy. We present the case of a 57-year-old woman who was found incidentally to have a large aneurysm ...
Roberts-South Angela - - 2012
Amyotrophic lateral sclerosis (ALS) is a multisystem disease that significantly impacts communication as a function of changes in motor speech, cognition, and language skills. Although discourse tasks have been used to assess language in a variety of acquired disorders, little work to date has been published on changes in discourse ...
Kang Bo Ram - - 2012
Our previous study demonstrated that CopA3, a disulfide dimer of the coprisin peptide analogue (LLCIALRKK), has antibacterial activity. In this study, we assessed whether CopA3 caused cellular toxicity in various mammalian cell lines. CopA3 selectively caused a marked decrease in cell viability in Jurkat T, U937, and AML-2 cells (human ...
Cadillo-Quiroz Hinsby H Department of Microbiology and Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, Illinois, United States of - - 2012
Despite a growing appreciation of their vast diversity in nature, mechanisms of speciation are poorly understood in Bacteria and Archaea. Here we use high-throughput genome sequencing to identify ongoing speciation in the thermoacidophilic Archaeon Sulfolobus islandicus. Patterns of homologous gene flow among genomes of 12 strains from a single hot ...
Zaraca F - - 2012
The aim of this study was to analyze factors influencing outcomes of surgical management for lower limb acute ischemia. A retrospective analysis of 490 thromboembolectomies performed in 468 patients was conducted. Perioperative and follow-up results were analyzed. Univariate and multivariate analysis of clinical variables and patients' characteristics for the risk ...
Coldren Rodney L - - 2012
Congress has mandated that the Department of Defense perform screening for concussion, or mild traumatic brain injury, on all service members redeploying from Iraq and Afghanistan. However, the retrospective diagnosis of concussion is complicated by the subjective nature of the complaints, overlap of symptoms with other conditions, and the normally ...
Isik Isil - - 2012
Objective: Postoperative surgical site infections (SSI) still greatly affect mortality and morbidity in cardiovascular surgery. SSI may be related to the suture material. In this prospective, randomized, controlled, and double-blinded study, the effect of antibacterial suture material on SSI in cardiac surgical patients was investigated.Methods: We randomly allocated 510 patients ...
Damman Peter P Department of Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, the - - 2012
This study sought to investigate long-term outcomes after early or delayed angiography in patients with non-ST-segment elevation acute coronary syndrome (nSTE-ACS) undergoing a routine invasive management. The optimal timing of angiography in patients with nSTE-ACS is currently a topic for debate. Long-term follow-up after early (within 2 days) angiography versus ...
Jang Woo Sun - - 2012
Linear focal elastosis (LFE) is characterized by several asymptomatic, yellow, palpable, irregularly indurated, striae-like lines extending horizontally across the middle and lower back. A focal increase in elastic fibers is a hallmark of the disease as seen from biopsy specimens. The pathogenesis of LFE is unclear, as is the association ...
Yamada Haruhiko - - 2012
The high-affinity choline transporter (CHT1), which is specifically expressed in cholinergic neurons, constitutes a rate-limiting step for acetylcholine synthesis. We have found that the exogenous ubiquitin ligase Nedd4-2 interacts with CHT1 expressed in HEK293 cells decreasing the amount of cell surface CHT1 by approximately 40%, and that small interfering RNA ...
Schmidt Liane - - 2012
Mental and physical efforts, such as paying attention and lifting weights, have been shown to involve different brain systems. These cognitive and motor systems, respectively, include cortical networks (prefronto-parietal and precentral regions) as well as subregions of the dorsal basal ganglia (caudate and putamen). Both systems appeared sensitive to incentive ...
Nakanishi R - - 2012
The outcomes of video-assisted thoracoscopic lobectomy for clinical stage I non-small cell lung cancer (NSCLC) patients with comorbidities were examined to determine the technical feasibility and safety of this procedure. Between January 2002 and December 2007, 111 consecutive patients with suspected stage I lung cancer, who individually had one or ...
Lee Woo Surng - - 2012
A coronary-bronchial artery fistula is a very rare congenital anomaly of the coronary artery whose etiology and pathogenesis have not yet been clarified. Most patients with coronary-bronchial fistulas are asymptomatic; however, some patients present with congestive heart failure, infective endocarditis, myocardial ischemia induced by a coronary steal phenomenon, or rupture ...
Oka Roberta K - - 2012
Peripheral artery disease (PAD) is an understudied chronic illness most prevalent in elderly individuals. PAD patients experience substantial walking impairment due to symptoms of limb ischemia that significantly diminishes quality of life (QOL). Cardiovascular disease (CVD) morbidity and mortality is increased in this population because of aggressive atherosclerosis resulting from ...
Kim Gun-Wook - - 2012
In previous studies, psoriasis has been reported to be associated with metabolic syndrome. The purpose of this study was to evaluate risk factors for metabolic syndrome in psoriasis patients and to compare the prevalence of metabolic syndrome in psoriasis and control groups. All patients (n=490) and controls (n=682) were investigated ...
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