Search Results
Results 701 - 750 of 5598
< 10 11 12 13 14 15 16 17 18 19 20 >
Zhao Jin-Cheng - - 2012
BACKGROUND: Gallstone ileus is an uncommon cause for small bowel obstruction. Less than 3 % of cases are due to a gallstone impacted in the duodenum or pylorus resulting in a gastric outlet obstruction, described by Bouveret in 1896 [4]. Most of the successful therapeutic maneuvers described involve open surgical removal ...
Mikata Rintaro - - 2012
BACKGROUND: Cytological examination of pancreatic juice obtained during endoscopic retrograde cholangiopancreatography (ERCP) is well established, but its sensitivity for pancreatic cancer has not been satisfactory. The aim of this study was to evaluate the usefulness of repeated pancreatic juice cytology (PJC) via the endoscopic naso-pancreatic drainage (ENPD) tube in patients ...
Li Huibin - - 2012
Algorithms used to compensate the radon and thoron progeny's interference are one of the key technologies for continuous air monitors (CAMs). In this study, a CAM that can automatically change filter was manufactured, and equations used to calculate the transuranic aerosol concentration and the corresponding critical level were derived. The ...
Lee Do Yup do - - 2012
Understanding the biological effects and biochemical mechanisms of low-dose ionizing radiation (LDIR) is important for setting exposure limits for the safe use of nuclear power and medical diagnostic procedures. Although several studies have highlighted the effects of ionizing radiation on metabolism, most studies have focused on uniform genetic mouse populations. ...
Tong Yanqing - - 2012
Abstract Background: Many Chinese herbal formulations are used in the treatment of urinary tract infection. Clinical isolates of Escherichia coli (E. coli) resistant to Chinese herbs have been identified rarely. Report here is a case in which Chinese herbs-resistant E. coli isolate was identified. Case: The strain of E. coli ...
Kruger Paul C - - 2012
Iron overload occurs in many haematologic disorders and causes significant morbidity. The advantages of magnetic resonance imaging in quantifying liver iron concentration continue to mount and the association between iron overload and increased mortality post allogeneic stem cell transplant needs further attention.
Daimiel Lidia A - - 2012
3β-hydroxysterol Δ24-reductase (DHCR24) catalyzes the reduction of the C-24 double bond of sterol intermediates during cholesterol biosynthesis. DHCR24 has also been involved in cell growth, senescence and cellular response to oncogenic and oxidative stress. Despite its important roles, little is known about the transcriptional mechanisms controlling DHCR24 gene expression. We ...
Samant Bhupesh S - - 2012
A series of quinoline-3-carboxylic acid derivatives has been synthesized with easy reaction conditions (in aqueous micellar microreactors and using microwave irradiation) and tested for its biological activity against human African trypanosomiasis (HAT). From this series, several derivatives of quinoline-3-carboxylic acid such as 23 and 24 exhibited potent activity against Trypanosoma ...
Lu Tongxiang - - 2012
A simple electrostatic model explains the enhanced stereoselectivity of N-oxide catalyzed allylations compared to propargylations, which in turn explicates the dearth of stereoselective N-oxide propargylation catalysts. These results suggest that N-oxide catalysts that are effective for both allylations and propargylations can be designed by targeting inherently stereoselective ligand configurations and ...
Brinkmann Christian - - 2012
Peroxiredoxins (PRDXs) are multifunctional proteins that have recently received much attention. They are part of the endogenous antioxidative capacity and function as efficient scavengers, especially for hydrogen peroxides. Studies show that physical training can induce an upregulation of PRDX isoform contents in the long term. This might help counteract chronic ...
Davis Philip J B - - 2012
BACKGROUND: Controversy still exists on the effect that obesity has on the morbidity and mortality in severe acute pancreatitis (SAP). The primary purpose of this study was to compare the mortality rate of obese versus nonobese patients admitted to the ICU for SAP. Secondary goals were to assess the potential ...
Mayor Alfredo - - 2012
Background. Evidence of the presence of Plasmodium vivax in the placenta is scarce and inconclusive. This information is relevant to understanding whether P. vivax affects placental function and how it may contribute to poor pregnancy outcomes.Methods. Histopathological examination of placental biopsies from 80 Papua New Guinean pregnant women was combined with quantitative ...
Mendillo Christopher B - - 2012
We present flight results from the optical pointing control system onboard the Planetary Imaging Concept Testbed Using a Rocket Experiment (PICTURE) sounding rocket. PICTURE (NASA mission number: 36.225 UG) was launched on 8 October 2011, from White Sands Missile Range. It attempted to directly image the exozodiacal dust disk of ...
Sathe Priyanka - - 2012
The developmental origin of interferon-producing plasmacytoid dendritic cells (pDC) has been uncertain. We tracked the development of pDC in cultures of bone marrow precursors stimulated with Flt3 ligand. Common myeloid precursors (CMP) produced both conventional DC (cDC) and pDC, via the DC-restricted common DC precursor (CDP). Common lymphoid precursors (CLP) ...
Hunt Brendan G - - 2012
Variation in protein sequence and gene expression each contribute to phenotypic diversity, and may be subject to similar selective pressures. Eusocial insects are particularly useful for investigating the evolutionary link between protein sequence and condition-dependent patterns of gene expression because gene expression plays a central role in determining differences between ...
Pauli Eric M - - 2012
BACKGROUND: Over the last two decades, self-expanding enteral stents have gained popularity and shown therapeutic potential for strictures, obstructions, fistulae, and perforations of the gastrointestinal (GI) tract. Currently available stent delivery systems make deployment in many locations in the GI tract difficult due to the inability to traverse curves or ...
Béraud Dawn - - 2012
Parkinson's disease (PD) is the second most common age-related neurodegenerative disorder typified by tremor, rigidity, akinesia and postural instability due in part to the loss of dopamine within the nigrostriatal system. The pathologic features of this disorder include the loss of substantia nigra dopamine neurons and attendant striatal terminals, the ...
Kulmala A - - 2012
The signal of the dosimetric detector is generally dependent on the shape and size of the sensitive volume of the detector. In order to optimize the performance of the detector and reliability of the output signal the effect of the detector size should be corrected or, at least, taken into ...
Bogen Kenneth T - - 2012
Average rates of total dermal uptake (K(up) ) from short-term (e.g., bathing) contact with dilute aqueous organic chemicals (DAOCs) are typically estimated from steady-state in vitro diffusion-cell measures of chemical permeability (K(p) ) through skin into receptor solution. Widely used ("PCR-vitro") methods estimate K(up) by applying diffusion theory to increase ...
Ramalingam Latha - - 2012
The insulin signaling pathway regulates whole-body glucose homeostasis by transducing extracellular signals from the insulin receptor (IR) to downstream intracellular targets, thus coordinating a multitude of biological functions. Dysregulation of IR or its signal transduction is associated with insulin resistance, which may culminate in type 2 diabetes. Following initial stimulation ...
Nakanishi Nozomi - - 2012
Oxidative DNA lesions inhibit the transcription of RNA polymerase II, but in the presence of transcription elongation factors, the transcription can bypass the lesions. Single-subunit mitochondrial RNA polymerase (mtRNAP) catalyses the synthesis of essential transcripts in mitochondria where reactive oxidative species (ROS) are generated as by-products. The occurrence of RNA ...
Steinvil A - - 2012
Assisted reproductive technology (ART) is extensively used as a tool for pregnancy achievement in subfertile couples. Congenital and acquired thrombophilias have been suggested by some investigators to play a role in abnormal embryo implantation and placentation. The objective of this study was to assess the role of common thrombophilias in ...
Batwa Waeil - - 2012
Objective :  To determine if lip asymmetry can affect lip aesthetics. Setting and Participants :  A group of dentists (n = 40) and cleft patients (n = 40) were recruited from the dental hospital and cleft service. Interventions :  Still photographic digital images of lips and teeth were manipulated to ...
Amemiya Kuniaki - - 2012
Porous nickel-phosphorus (NiP) black surfaces exhibit excellent low reflectance in the visible and near-IR regions. Through use of a model of the surface morphology and composition, the reflectance was numerically simulated by a three-dimensional finite-difference time-domain method to determine the origin of the low reflectance. In agreement with experimental results, ...
Wang Dejiang - - 2012
The signal-to-noise ratio and the dynamic range are the two key parameters characterizing CCD performance, especially in remote sensing applications. After exploring the possible sources of CCD noise, this paper analyzes the impacts of the analog gain on the two parameters, respectively, and establishes the mathematical models describing their relationships. ...
Steiropoulos P - - 2012
We evaluated mean platelet volume (MPV; an indicator of vascular risk) and platelet distribution width in patients with stable chronic obstructive pulmonary disease (COPD; n = 85). We also included a control group of 34 smokers without airflow limitation. Mean platelet volume was significantly higher in patients with COPD (10.69 ...
Gao Fan - - 2012
We have developed an absorption spectrum based molecular ruler that measures the distance between two mercapto groups. The conformation of the molecular rulers changes with the distance, which induces an absorption spectrum change. DFT calculation has been carried out to elucidate the relation between the molecular conformation and the absorption ...
Kozuka Toshiaki - - 2012
Light is one of the most important environmental factors regulating the growth and development of leaves. As the primary photosynthetic organs, leaves have a laminar structure in many dicotyledonous plants. The regulation of leaf flatness is a key mechanism for the efficient absorption of light under the low light conditions. ...
Natu Gayatri - - 2012
We have systematically studied the effects of substitutional doping of p-type nanoparticulate NiO with cobalt ions. Thin films of pure and Co-doped NiO nanoparticles with nominal compositions CoxNi1-xOy (0 ≤ x ≤ 0.1) were fabricated using sol-gel method. X-ray photoelectron spectroscopy revealed a surface enrichment of divalent cobalt ions in ...
Wani Javaid A - - 2012
Thermoluminescence characteristics of Dy(3+) -activated Mg(5) (BO(3) )(3) F low Z(eff) phosphor are described. The Mg(5) (BO(3) )(3) F phosphor doped with Dy(3+) as activator was prepared by the modified solid-state reaction. Formation of the compound was confirmed by use of X-ray powder diffraction. The X-ray powder diffraction pattern of ...
Vilizzi Lorenzo - - 2012
The Fish Invasiveness Scoring Kit (FISK) is currently one of the most popular pre-screening tools for freshwater fishes. A recent upgrade has ensured its wider climatic relevance to countries with subtropical regions. This enhancement is of particular importance to Australia, which encompasses tropical, arid, and temperate zones, and where the ...
Guo Dong - - 2012
PURPOSE: To explore the impact of UDP-glucuronosyltransferase polymorphisms (UGT1A9-118(dT) ( 9/10 ), UGT1A9 CI399T, UGT1A9 C-440T and UGT2B7 G211T) on the pharmacokinetics of mycophenolic acid (MPA) in healthy Chinese volunteers. METHODS: We recruited ten healthy volunteers with no polymorphisms (control group), 11 homozygotes of mutants UGT1A9 CI399T and UGT1A9-118(dT) ( ...
Kramer Ueli - - 2012
OBJECTIVE: Cognitive change over the course of psychodynamic psychotherapy has been postulated by several models, but has rarely been studied. Based on the adaptive skills model (Badgio, Halperin, & Barber, 1999), it is reasonable to expect that very brief dynamic psychotherapy may be associated with change in coping patterns and ...
Iannone Robert - - 2012
Mandatory non-diagnostic biopsies for biomarker research pose risk and inconvenience to cancer patients that should be justified by the knowledge gained. This commentary reflects on the publication by Freeman et. al., which points to a potentially low publication rate of biomarker results from cancer clinical trials requiring non-diagnostic biopsies.
Parvin Gulsan Ara - - 2012
Several researchers have examined the role of microfinance institutions (MFIs) in poverty alleviation, but the part that they play in disaster risk reduction remains unaddressed. Through an empirical study of Hatiya Island, one of the most vulnerable coastal communities of Bangladesh, this research evaluates perceptions of MFI support for the ...
Rosario Pedro Weslley Souza - - 2012
Background: Diagnostic radioiodine whole-body scanning (DxWBS) in combination with stimulated thyroglobulin (Tg) (i.e., measurement after levothyroxine [L-T4] withdrawal or recombinant human TSH administration) continues to be recommended for patients with differentiated thyroid carcinoma (DTC) at high or intermediate risk for recurrence with negative basal Tg and ultrasonography (US) after ablation. ...
Vouliotis A I - - 2012
We report the case of a Brugada syndrome patient with a history of syncopal and presyncopal episodes and evidence of sinus node and atrioventricular (AV) conduction abnormalities. The patient developed sinus bradycardia, sinoatrial conduction abnormalities, prolonged HV interval, early appearance of AV block, AV nodal reentrant tachycardia and polymorphic ventricular ...
Kaneko Gou - - 2012
OBJECTIVES: To study the impact of high body mass index and large prostate weight on operative time of laparoscopic radical prostatectomy. METHODS: A retrospective analysis of medical records from patients who had undergone extraperitoneal laparoscopic radical prostatectomy by a single surgeon at our institution between September 2008 and April 2011 ...
Shinmei Shunsuke - - 2012
OBJECTIVES: To investigate the clinical significance of micro-ribonucleic acid-155 in clear cell renal cell carcinoma, in particular focusing on the association of expression levels of micro-ribonucleic acid-155 with clinicopathological factors, cancer-specific survival and therapeutic outcomes in clear cell renal cell carcinoma patients. METHODS: Quantitative reverse transcription polymerase chain reaction of ...
Perez-Ordoñez Bayardo - - 2012
The causative role of human papillomavirus (HPV) in a subset of squamous cell carcinomas of the oropharynx (OSCC) is now well established with HPV-16 being detected in approximately 92 % of HPV-positive OSCC in North America. Recently HPV has also been found in some non-squamous oropharyngeal carcinomas including adenosquamous carcinomas, neuroendocrine ...
Zhou Liping - - 2012
The fringe projection technique plays an important role in surface inspection, due to its noncontact, full-field acquisition and high resolution. When using projecting interferometry fringes, one of the basic problems encountered is the speckle noise existing in the fringe pattern. In this paper, a novel method is proposed to reduce ...
Sun Wenjie - - 2012
Growth in the nanotechnology industry is leading to increased production of engineered nanoparticles (NPs). This has given rise to concerns about the potential adverse and toxic effects to biological system and the environment. An important mechanism of NP toxicity is oxidative stress caused by the formation of reactive oxygen species ...
Jacka Felice N - - 2012
Fish and PUFA consumption are thought to play a role in mental health; however, many studies do not take into account multiple sources of PUFA. The present study analysed data from a sample of 935 randomly selected, population-based women aged 20-93 years. A validated and comprehensive dietary questionnaire ascertained the ...
Forero Angela - - 2012
Streptomyces coelicolor mutants resistant to 2-deoxyglucose are insensitive to carbon catabolite repression (CCR). Total reversion to CCR sensitivity is observed by mutant complementation with a DNA region harboring both glucose kinase glkA gene and the sco2127 gene. The sco2127 is located upstream of glkA and encodes a putative protein of ...
Santhanam Parthasarathy - - 2012
In this study, we functionally analyzed the gene family encoding necrosis- and ethylene-inducing-like proteins (NLPs) of the vascular wilt pathogen Verticillium dahliae. We show that the composition of the NLP gene family varies little among V. dahliae isolates. The cytotoxic activity of NLP family members of a tomato pathogenic V. ...
Huang Ryan B - - 2012
The ability to discriminate cell adhesion molecule expression between healthy and inflamed endothelium is critical for therapeutic intervention in many diseases. This study explores the effect of laminar flow on TNFα-induced E-selectin surface expression levels in human umbilical vein endothelial cells (HUVECs) relative to IL-1β-induced expression via flow chamber assays. ...
Akyildiz Halil I - - 2012
The formation of a conformal nanoscale organic-inorganic surface modification to polyamide 6 (PA6) by sequential vapor infiltration (SVI) is demonstrated. The SVI procedure is a materials growth technique by which exposure of organometallic vapors react with a polymeric material, resulting in a hybrid organic-inorganic surface modification. This work investigates the ...
Tsivgoulis Georgios - - 2012
Poststroke hypertension is a common complication of acute cerebral ischemia (ACI) occurring in up to 80% of acute ischemic stroke (AIS) patients.(1) Despite its high prevalence, the optimal management of arterial hypertension during the acute stroke stage has not been established and remains an issue of long-lasting debate and little ...
Kim Yushin - - 2012
Effective stabilization is important to increase sports performance. Imbalanced spinal muscle responses between the left and right sides increase the risk of spinal buckling and microtrauma at the intervertebral joints. The purpose of this study was to confirm whether intensive unilateral neuromuscular training (IUNT) focusing on the non-dominant side of ...
Nardi Daniele - - 2012
Orientation (or reorientation) is the first step in navigation, because establishing a spatial frame of reference is essential for a sense of location and heading direction. Recent research on nonhuman animals has revealed that the vertical component of an environment provides an important source of spatial information, in both terrestrial ...
< 10 11 12 13 14 15 16 17 18 19 20 >