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Results 601 - 650 of 2149
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Shyaula Sajan Lal - - 2012
Kaempferol-3-O-α-L-rhamanopyranosyl-(1'''-6'')-β-D-glucopyranoside (1) (Nicotiflorin or kaempferol-3-O-rutinoside), isolated from the aerial parts of Osyris wightiana Wall. ex Wight, exhibited a potent antiglycation activity in vitro. A short and efficient route to kaempferol-3-O-rutinoside (1) is also described in this paper. To study the structure-activity relationship, few other derivatives of kaempferol were also evaluated ...
Braz Rosângela Rodrigues - - 2012
Co-inoculation of the fungus Aspergillus niger and the bacterium Burkholderia cepacia was undertaken to understand the interaction between different species of phosphate solubilizing microorganisms (PSM). PSM were inoculated in a single or mixed (A. niger-B.cepacia) culture. During nine days of incubation, microbial biomass was enhanced, accompanied with increases in the ...
Rahmati Peyman - - 2012
We show the first clinical results using the level-set-based reconstruction algorithm for electrical impedance tomography (EIT) data. The level-set-based reconstruction method (LSRM) allows the reconstruction of non-smooth interfaces between image regions, which are typically smoothed by traditional voxel-based reconstruction methods (VBRMs). We develop a time difference formulation of the LSRM ...
Miiller Wojciech - - 2012
Ba(3)Fe(2.15)W(0.85)O(8.72) has been grown as large single crystals using the floating-zone method, permitting very precise characterization of the nuclear and magnetic structures by neutron and synchrotron diffraction methods. The results of our structural investigation are combined with dc and ac magnetization and heat capacity measurements to give an unusually complete ...
Vilela Diana - - 2012
Single-walled carbon nanotubes (SWCNTs) should constitute an important natural step towards the improvement of the analytical performance of microfluidic electrochemical sensing. SWCNTs inherently offer lower detection potentials, higher surfaces and better stability than the existing carbon electrodes. However, pristine SWCNTs contain some carbonaceous and metallic impurities that influence their electrochemical ...
Chai Xiaoyun - - 2012
A series of triazole antifungal agents with piperidine side chains were designed and synthesized. Results of preliminary antifungal tests against eight human pathogenic fungi in vitro showed that all the title compounds exhibited excellent activities with broad spectrum. Moreover, a molecular model for the binding between compound 12 and the ...
Palladino Pasquale - - 2012
The chemokines and their receptors play a key role in immune and inflammatory responses by promoting recruitment and activation of different subpopulations of leukocytes. The membrane receptor CXCR3 binds three chemokines, CXCL9, CXCL10 and CXCL11, and its involvement is recognized in many inflammatory diseases and cancers. Therefore, the inhibition of ...
Lazarus Michelle D - - 2012
The evolution in undergraduate medical school curricula has significantly impacted anatomy education. This study investigated the perceived role of clinical anatomy and evaluated perceptions of medical students' ability to apply anatomical knowledge in the clinic. The aim of this study was to develop a framework to enhance anatomical educational initiatives. ...
Watanabe Hidetoshi - - 2012
Asymmetric aldol reactions of α-amino acid derivatives via memory of chirality were developed. Chiral oxazolidones with contiguous tetra- and trisubstituted chiral centers were obtained in 78-94% ee by the asymmetric aldol reaction followed by intramolecular acylation.
Scragg Jonathan J - - 2012
A simple and useful thermodynamic approach to the prediction of reactions taking place during thermal treatment of layers of multinary semiconductor compounds on different substrates has been developed. The method, which uses the extensive information for the possible binary compounds to assess the stability of multinary phases, is illustrated with ...
Xie Liping - - 2012
Various improvements and modifications to the surgical treatment of benign prostatic hyperplasia (BPH) have emerged over the last decade. Most techniques often initially claimed superiority only to turn out to be mediocre with time. Holmium laser enucleation of the prostate (HoLEP) has been associated with superior outcomes as compared to ...
Dündar Yasemin - - 2012
Alkylphenols have xenoestrogenic activity, which mimic the action of physiological estrogens and these mimicking activities are mainly mediated by nongenomic pathway. Nongenomic pathway plays a pivotal role in breast, endometrial and ovarian cancers' growth and development. In this study, various alkylphenol derivatives were prepared and screened for their anti-uterotrophic and ...
Hranov Luchezar G - - 2012
INTRODUCTION: Whereas the use of electroconvulsive therapy (ECT) has been frequently surveyed in Western Europe, information about the practice of ECT in Eastern Europe is limited. To date, there has been no information about the present state of ECT use in Bulgaria. OBJECTIVE: The aim of this project was to ...
Liew Sean K - - 2012
The synthesis and coordination chemistry of a series of dianionic bis(amido)silyl and bis(amido)disilyl, [NSiN] and [NSiSiN], chelates with N-bound aryl or sterically modified triarylsilyl (SiAr(3)) groups is reported. In order to provide a consistent comparison of the steric coverage afforded by each ligand construct, various two-coordinate N-heterocyclic germylene complexes featuring ...
Oliveira Carla - - 2012
Lectins are a heterogeneous group of proteins found in plants, animals and microorganisms, which possess at least one non-catalytic domain that binds reversibly to specific mono- or oligosaccharides. The range of lectins and respective biological activities is unsurprising given the immense diversity and complexity of glycan structures and the multiple ...
Arzt W - - 2012
AIM: In this explorative study it should be evaluated how the introduction of non invasive first trimester diagnosis (nuchal translucency measurement, Combined Test, first trimester ultrasound screening) has influenced the indications and cytogenetic results of chorion villi samplings. MATERIALS AND METHODS: Between 1989 and 2008 3337 pregnancies with CVS between ...
Pavlidis Antonios N - - 2012
A right coronary artery origin from the left coronary sinus and a left coronary origin from the right sinus although rarely encountered during routine cardiac catheterization, they represent two relatively common autopsy findings in young patients suffering sudden cardiac death. The interarterial course of the aberrant artery, between the aortic ...
Cranwell Philippa B - - 2012
Using a simple and accessible Teflon AF-2400 based tube-in-tube reactor, a series of pyrroles were synthesised in flow using the Paal-Knorr reaction of 1,4-diketones with gaseous ammonia. An inline flow titration technique allowed measurement of the ammonia concentration and its relationship to residence time and temperature.
van der Vijver R J - - 2012
The authors examined the potential of the cyclooxygenase 2 (COX-2) inhibitor carprofen to reproducibly induce anastomotic leakage. In experiment 1, an anastomosis was constructed in both ileum and colon of 20 rats, and they were given carprofen (5 mg/kg subcutaneously every 24 hours) or buprenorphine (0.02 mg/kg subcutaneously every 12 ...
Silaghi Diana - - 2012
In the Romanian forest ecosystems, the first measurements of ambient ozone (O(3)) concentrations started in 1997 in 6 of 26 locations established in a trans-Carpathian Network. Furthermore, three additional ozone and other phytotoxic pollutant (NO(x), SO(2) and NH(3)) monitoring networks were installed in 2000 in Retezat (11 locations) and during ...
Kodama Yuko - - 2012
ABSTRACT: BACKGROUND: The financial burden of medical expenses has been increasing for cancer patients. We investigated the relationship between household income and financial burden among patients with chronic myelogenous leukaemia (CML) who have been treated with imatinib. METHODS: A questionnaire was distributed to 1200 patients between May and August 2009. ...
Lee Chongmin - - 2012
During the past 3 decades, cochlear implants have dramatically influenced Deaf education and the Deaf Community. They have also served as catalysts for discord between some members of the Deaf Community and advocates of the technology. In this article, I do not intend to support either side of the spoken ...
Canneaux Sébastien - - 2012
The rate constants of the H-abstraction reactions from CH(3)Cl and CH(3)Br molecules by ClO and BrO radicals have been estimated over the temperature range of 300-2500 K using four different levels of theory. Calculations of optimized geometrical parameters and vibrational frequencies are performed using B3LYP and MP2 methods combined with ...
Sivan Yonatan - - 2012
We show that metal nanoparticles can be used to improve the performance of super-resolution fluorescence nanoscopes based on stimulated-emission-depletion (STED). Compared with a standard STED nanoscope, we show theoretically a resolution improvement by more than an order of magnitude, or equivalently, depletion intensity reductions by more than two orders of ...
Vonach Martin - - 2012
Finite element (FE) methods are widely used in electrical impedance tomography (EIT) to enable rapid image reconstruction of different tissues based on their electrical conductivity. For EIT of brain function, anatomically-accurate (head-shaped) FE meshes have been shown to improve the quality of the reconstructed images. Unfortunately, given the lack of ...
Faraoni David - - 2012
The benefit-to-risk ratio of using tranexamic acid (TXA) in paediatric cardiac surgery has not yet been determined. This systematic review evaluated studies that compared TXA to placebo in children undergoing cardiac surgery. A systematic search was conducted in all relevant randomized controlled trials. The following information was extracted from the ...
Chailurkit La-Or - - 2012
OBJECTIVE: To explore vitamin D status in relation to diabetes, based on data from a national health examination survey in Thailand. DESIGN AND METHODS: A total of 2,641 adults, aged 15-98 years, were randomly selected according to geographical region from the Thai 4(th) National Health Examination Survey sample. Logistic regressions ...
Moen Christian Arvei - - 2012
AIMS: The aim of this study was to investigate whether multi-layer radial strain and strain rate analysis is superior to one-layer strain analysis for confirming reperfusion following a non-occlusive coronary stenosis. METHODS AND RESULTS: In 10 anaesthetized pigs, an extracorporeal shunt was inserted from the brachiocephalic to the left anterior ...
Himmel Hans-Jörg - - 2012
Small but impressive: Since triatomic, highly reactive molecules like OPN, SPN, and SiS(2) have special electronic properties, they are expected to display rich and diverse reactivity. Matrix-isolation studies together with quantum chemical studies now form a solid basis for future preparative work.
Wong Clarence T T - - 2012
Edible: By grafting natural peptide antagonists onto the cyclotide kalata B1, orally active peptides were engineered, which are potentially useful therapeutics for the treatment of inflammatory pain. For example, the entire loop 6 of kalata B1 was replaced with the peptidic bradykinin B(1) receptor antagonist DALK (red in scheme) to ...
Bush Mark A - - 2012
OBJECTIVE: To evaluate, using inverse dynamic analysis, the biomechanical outcome from tibial tuberosity advancement (TTA) surgery in dogs affected by unilateral cranial cruciate ligament failure (CCLF). STUDY DESIGN: Retrospective case series. ANIMALS: Dogs (n = 13) 11-20 months after surgery. METHODS: Kinematic and force data were collected from 13 dogs ...
Soberats Bartomeu - - 2012
New tripodal squaramide-based hosts have been synthesised and structurally characterised by spectroscopic methods. In 2.5 % (v/v) [D(6) ]DMSO in CDCl(3) , compound 4 formed dimeric assemblies [log K(dim) =3.68(8)] as demonstrated by (1) H NMR spectroscopy and UV dilution experiments. AFM and SEM analyses revealed the formation of a network of bundled ...
Li Wei - - 2012
OBJECTIVES: To evaluate the effects of electroconvulsive stimulation (ECS) on long-term potentiation (LTP) and synaptophysin (SYP) in the hippocampus of rats under chronic unpredictable mild stress (CUMS). METHODS: Sixty Sprague-Dawley rats were randomly divided into three groups (n = 20 for each group): the control group (no intervention), the CUMS ...
Franke Alicja - - 2012
The present study focuses on the formation and reactivity of hydroperoxo-iron(III) porphyrin complexes formed in the [Fe(III) (tpfpp)X]/H(2) O(2) /HOO(-) system (TPFPP=5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphyrin; X=Cl(-) or CF(3) SO(3) (-) ) in acetonitrile under basic conditions at -15 °C. Depending on the selected reaction conditions and the active form of the catalyst, the formation ...
Morrison-McKell Travis J - - 2012
This article outlines a needs assessment process for developing or updating a therapeutic apheresis medicine (TAM) service. The TAM service brings together administrative, medical, laboratory, and pharmacy services. As these services jointly respond to needs assessment questions, the TAM service evolves. Discussions identifying patient populations impact the types of procedures ...
Stoychev Georgi - - 2012
We investigated the folding of rectangular stimuli-responsive hydrogel-based polymer bilayers with different aspect ratios and relative thicknesses placed on a substrate. It was found that long-side rolling dominates at high aspect ratios (ratio of length to width) when the width is comparable to the circumference of the formed tubes, which ...
Ngian Gene-Siew - - 2012
OBJECTIVES: To determine the prevalence of coronary heart disease (CHD) and cardiovascular risk factors in a well-characterised cohort of systemic sclerosis (SSc) patients, and to compare this with the general population.METHODS: A cross-sectional study of the prevalence of CHD and cardiovascular risk factors in participants in the Australian Scleroderma Cohort ...
Tsiartas P - - 2012
To analyse whether specific proteins in maternal serum and cervical length, alone or in combination, can predict the likelihood that women with intact membranes with threatened preterm labour will deliver spontaneously within 7 days of sampling. Cohort study. Sahlgrenska University Hospital, Gothenburg, Sweden. Women at between 22 and 33 weeks ...
Freeman Colin L - - 2012
Simulations using classical molecular dynamics are reported on the binding of the protein Ovocleidin-17 to calcite stepped surfaces. vicinal surfaces ({31.8} and {31.16}) are used to obtain acute and obtuse steps. The simulations demonstrate that binding is greater at the obtuse step. A range of analytical methods is used to ...
Seashore-Ludlow Brinton - - 2012
Herein, we present two methods for an asymmetric transfer hydrogenation through the dynamic kinetic resolution of α-amido-β-ketoesters. These procedures yield the corresponding anti-β-hydroxy-α-amido esters in good yields and with good diastereo- and enantioselectivities. First, the scope of the reduction of α-amido-β-ketoesters by using triethylammonium formate azeotrope is examined. Then, an ...
Gundlach Lars - - 2012
The general case of a heterogeneous electron-transfer reaction is realized by ultrafast electron transfer from a light-absorbing molecule to a wide continuum of electronic acceptor states, realizing the so-called wide band limit. Experimental data obtained for perylene dye/TiO(2) systems confirm the predictions of fully quantum mechanical model calculations of the ...
Holt Monte Daniel - - 2012
This research focuses on the overall extraction process of alkylresorcinols (ARs) from uncooked grains and baked products that have been processed with wheat, corn, rice, and white flour. Previously established extraction methods developed by Ross and colleagues, as well as a semi-automated method involving Accelerated Solvent Extraction (ASE) were applied ...
Hassan C - - 2012
Background: Propofol for colonoscopy is largely administered by anesthesiologists or anesthesiology nurses in the United States (US) and Europe. Endoscopist-directed administration of propofol (EDP) by nonanesthesiologists has recently been proposed, with potential savings of anesthetist reimbursement costs. We aimed to assess potential EDP-related benefit in a screening setting. Methods: In ...
Zhu Feng - - 2012
Context: Smoke inhalation injury is the leading cause of acute respiratory failure in critical burn victims. Advances in the treatment of smoke inhalation injury have been limited in the past years. To further explore the pathogenesis, stable and practical animal models are necessary. Objective: To develop a rat model of ...
Erdmann Friederike - - 2012
The incidence of cutaneous malignant melanoma has steadily increased over the past 50 years in predominately fair-skinned populations. This increase is reported to have levelled off recently in several Northern and Western European countries, Australia and New Zealand and in North America. We studied the global patterns and time trends ...
Gerlach Y - - 2012
Breathlessness on exertion is common in people with obesity. Assessments of breathlessness may include sensation (intensity, sensory quality or unpleasantness) and/ or the behavioral/emotional consequences of the sensation (respiratory-related functional impairment, disability or quality of life). This systematic review of primary studies published since 2005 evaluated how has the sensation ...
Inacoti M - - 2012
BACKGROUND: Children undergoing major surgery can develop lung de-recruitment and gas exchange impairment in the post-operative period. The aim of this study was to assess the effect of periodic sigh breaths (Sighs) during pressure support ventilation (PSV) on gas exchange and respiratory pattern in children after major surgery. METHODS: 20 ...
Papadopoulou Stella-Lida - - 2012
AIMS: We evaluated the distribution and composition of atherosclerotic plaques at bifurcations with intravascular ultrasound-virtual histology (IVUS-VH) and multidetector computed tomography (MDCT) in relation to the bifurcation angle (BA). METHODS AND RESULTS: In 33 patients (age 63 ± 11 years, 79% male) imaged with IVUS-VH and MDCT, 33 bifurcations were ...
Hao Lu - - 2012
Nontoxic cyanide source: An unprecedented route to acrylonitriles by employing propargylic alcohols and para-tolylsulfonohydrazide as a combined cyano source has been developed. This efficient and practical cyanation reaction proceeds through an FeCl(3) -catalyzed domino propargylic substitution/aza-Meyer-Schuster rearrangement sequence, the rearrangement process of which is reported for the first time.
Lin Pengfei - - 2012
Follicular atresia is primarily induced by granulosa cell apoptosis, but description of the apoptotic pathway in granulosa cells is incomplete. In this study, we explored the possibility that endoplasmic reticulum (ER) stress could be involved in granulosa cell apoptosis during goat follicular atresia. Immunohistochemical analysis revealed that DNA damage-inducible transcript ...
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