Search Results
Results 201 - 250 of 1428
< 1 2 3 4 5 6 7 8 9 10 >
Kang Jun - - 2012
To compare the granulocyte elastase (EA) levels in saliva and/or gingival crevicular fluild (GCF) of subjects with various periodontal conditions and analyze the relation between EA levels in GCF and in saliva. GCF and salivary samples were collected from 17 subjects with healthy periodontium, 14 with gingivitis, 24 with chronic ...
Xing Yan Xi - - 2012
To compare the difference of clinical and technical processes of full-crown restorations by using traditional and Triple-tray impression techniques, consumed materials and time estimated in every procedure of these two methods. Four veteran clinicians were selected to carry out full-crown restorative treatment for 124 patients (130 crowns). From one impression, ...
Yan Zhi Min - - 2012
To evaluate the diagnostic value of each item in 2002 international classification criteria for primary Sjogren's syndrome (pSS) in clinically diagnosed cases. All patients were from the Department of Oral Medicine of Peking University School of Stomatology from 2005 to 2010. Their clinical manifestations and lab testing results met the ...
DI Ping - - 2012
To evaluate the influence of soft tissue aesthetic outcomes following application of adhensive fixed partial denture and implant supported temporary restoration in maxillary single tooth implant procedure. Discuss the feasibility and details of the shaping the soft tissue by combine adhensive fixed partial denture and implant-supported temporary restoration. The study ...
Peng Lei - - 2012
To obtain and characterize the single-stranded DNA (ssDNA) aptamers of human recombinant S100A8 protein. According to systematic evolution of ligands by exponential enrichment (SELEX) method, an ssDNA random library was subjected to 11 rounds of selection against human recombinant S100A8 protein. Using a biotin-strepavidin-HRP detecting system, the binding capacity of ...
Gao Min - - 2012
To investigate the clinicopathologic characterstics and management of parotid pleomorphic adenomas closely abutting the facial nerve. Twenty cases (21 sides) of pleomorphic adenoma in the parotid gland were surgically treated in Peking University School and Hospital of Stomatology from September 2000 to August 2010. During the operation, the facial nerve ...
Zhu Wei Dong - - 2012
This study was to longitudinally evaluate the change of prevalence of five periodontal putative pathogens in the subgingival plaque of artificial class III furcation defects at the three time-points, including before the establishment of furcation defects, before and 6 months after periodontal surgery. Eighteen chronic infected class III FI defects ...
Zhou Yong Sheng - - 2012
Human adipose-derived stromal cells (hASCs) can be obtained from adipose tissues that offer an abundant and easily accessible pool of stem cells. Thus, hASCs have become a highly attractive source of seed cells in bone tissue engineering and have promising prospects in bone regeneration. Since 2002, our research group has ...
Amador Carolina - - 2012
Elasticity imaging methods have been used to study tissue mechanical properties and have demonstrated that tissue elasticity changes with disease state. In current shear wave elasticity imaging methods typically only shear wave speed is measured and rheological models, e.g. Kelvin-Voigt, Maxwell and Standard Linear Solid, are used to solve for ...
Gonzales Brian J - - 2012
Energy-discriminated x-ray computed tomography (CT) data were projected onto a set of basis functions to suppress the noise in filtered back-projection (FBP) reconstructions. The x-ray CT data were acquired using a novel x-ray system which incorporated a single-pixel photon-counting x-ray detector to measure the x-ray spectrum for each projection ray. ...
Li Wei - - 2012
Accurate segmentation of the prostate is the key to the success of external beam radiotherapy of prostate cancer. However, accurate segmentation of the prostate in computer tomography (CT) images remains challenging mainly due to three factors: (1) low image contrast between the prostate and its surrounding tissues, (2) unpredictable prostate ...
James Sara St - - 2012
Treatment planning for patients undergoing radiation therapy is often performed based on four-dimensional computed tomography (4DCT) when respiratory motion is present, as in lung cancer patients. 4DCT is used to define the internal target volume (ITV) that, ideally, incorporates all potential locations of the tumour. In this work, we use ...
Golan Rachel - - 2012
Unlike visceral adipose tissue (VAT), the association between subcutaneous adipose tissue (SAT) and obesity-related morbidity is controversial. In patients with type 2 diabetes, we assessed whether this variability can be explained by a putative favorable, distinct association between abdominal superficial SAT (SSAT) (absolute amount or its proportion) and cardiometabolic parameters. ...
Mensching Donna A - - 2012
The role of polybrominated diphenyl ethers (PBDE) was investigated in the occurrence of feline hyperthyroidism (FH) by evaluating 15 PBDE congeners in serum from 62 client-owned (21 euthyroid, 41 hyperthyroid) and 10 feral cats. Total serum PBDE concentrations in euthyroid cats were not significantly different from those of hyperthyroid cats. ...
Klotzsche-von Ameln Anne - - 2012
A right amount of oxygen and nutrients is essential for a tumor to develop. The role of oxygen dependent pathways and their regulators is therefore of utmost importance although little is known about the detailed impact they can have. Recently we have shown that inhibition of the oxygen sensor PHD2 ...
Shannahan J H - - 2012
Exposure to Libby amphibole (LA) asbestos is associated with increased incidences of human autoimmune disease and mortality related to cardiovascular diseases. However, the systemic and vascular impacts are less well examined because of the dominance of pulmonary disease. It was postulated that regardless of the type of exposure scenario, LA ...
Ji Shunrong - - 2012
Integrin αvβ3 receptor is expressed on several types of cancer cells, including pancreatic cancer cells, and plays an important role in tumor growth and metastasis. The ability to target the integrin αvβ3 receptor on cancer cells increases the efficacy of targeted therapy and reduces the side effects. The aim of ...
Hollingworth Charlotte - - 2012
Transition metal catalyzed transformations using fluorinating reagents have been developed extensively for the preparation of synthetically valuable fluorinated targets. This is a topic of critical importance to facilitate laboratory and industrial chemical synthesis of fluorine containing pharmaceuticals and agrochemicals. Translation to (18)F-radiochemistry is also emerging as a vibrant research field ...
Booth Laurence L Department of Neurosurgery, Virginia Commonwealth University, Richmond, - - 2012
We have further defined mechanism(s) by which the drug OSU-03012 (OSU) kills tumor cells. OSU lethality was suppressed by knock down of PERK and enhanced by knock down of ATF6 and IRE1α. OSU treatment suppressed expression of the chaperone, BiP/GRP78, and did so through reduced stability of the protein. Knock ...
Tsai Shang-Shyue - - 2012
Recent studies showed that air pollution is a risk factor for hospitalization for myocardial infarction (MI). However, there is limited evidence to suggest which subpopulations are at higher risk for MI arising from air pollution. This study was undertaken to examine the modifying effects of specific secondary cardiovascular diagnosis (including ...
Pascoe Jordan J Division of Endocrinology and Metabolism, University of Pittsburgh, Pittsburgh, Pennsylvania, - - 2012
Pancreatic β-cell proliferation is infrequent in adult humans and is not increased in type 2 diabetes despite obesity and insulin resistance, suggesting the existence of inhibitory factors. Free fatty acids (FFAs) may influence proliferation. In order to test whether FFAs restrict β-cell proliferation in vivo, mice were intravenously infused with ...
Lazarakis P - - 2012
The concept of nanodosimetry is based on the assumption that initial damage to cells is related to the number of ionizations (the ionization cluster size) directly produced by single particles within, or in the close vicinity of, short segments of DNA. The ionization cluster-size distribution and other nanodosimetric quantities, however, ...
Palma Bianey Atriana - - 2012
The purpose of this study was to present a Monte-Carlo (MC)-based optimization procedure to improve conventional treatment plans for accelerated partial breast irradiation (APBI) using modulated electron beams alone or combined with modulated photon beams, to be delivered by a single collimation device, i.e. a photon multi-leaf collimator (xMLC) already ...
Yohannes Indra - - 2012
Tissue- and water-equivalent materials (TEMs) are widely used in quality assurance and calibration procedures, both in radiodiagnostics and radiotherapy. In radiotherapy, particularly, the TEMs are often used for computed tomography (CT) number calibration in treatment planning systems. However, currently available TEMs may not be very accurate in the determination of ...
Seo Seung-Jun - - 2012
In order to study potent microenvironments of malignant gliomas with a high- resolution x-ray imaging technique, an injection orthotopic glioma model was made using the Sprague-Dawley rat. Total brain tissue, taken out as an ex vivo model, was examined with diffraction-enhanced imaging (DEI) computed tomography (CT) acquired with a 35 ...
Correia Teresa T Department of Medical Physics and Bioengineering, University College London, Gower Street, London WC1E 6BT, UK. - - 2012
We present 3D optical topography images reconstructed from data obtained previously while infants observed videos of adults making natural movements of their eyes and hands. The optical topography probe was placed over the temporal cortex, which in adults is responsible for cognitive processing of similar stimuli. Increases in oxyhaemoglobin were ...
Carabe Alejandro - - 2012
Traditionally, dose in proton radiotherapy is prescribed as Gy(RBE) by scaling up the physical dose by 10%. The relative biological effectiveness (RBE) of protons is considered to vary with dose-averaged linear energy transfer (LET(d)), dose (d) and (α/β)(x). The increase of RBE with depth causes a shift of the falloff ...
Noordeen Nafeesa A NA Section of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Imperial College London, London, - - 2012
Carbohydrate-responsive element-binding protein (ChREBP) is a regulator of pancreatic β-cell gene expression and an important mediator of glucotoxicity. Glucose increases the activity and nuclear localization of ChREBP by still ill-defined mechanisms. Here we reveal, using both MIN6 and primary mouse β-cells, a unique mechanism behind ChREBP nuclear translocation. At low ...
Jahnke Lennart - - 2012
We present a GPU implementation called GMC (GPU Monte Carlo) of the low energy (<100 GeV) electromagnetic part of the Geant4 Monte Carlo code using the NVIDIA® CUDA programming interface. The classes for electron and photon interactions as well as a new parallel particle transport engine were implemented. The way ...
Clasie Benjamin - - 2012
Proton, as well as other ion, beams applied by electro-magnetic deflection in pencil-beam scanning (PBS) are minimally perturbed and thus can be quantified a priori by their fundamental interactions in a medium. This a priori quantification permits an optimal reduction of characterizing measurements on a particular PBS delivery system. The ...
Ramakrishnan Jagdish - - 2012
We conduct a theoretical study of various solution methods for the adaptive fractionation problem. The two messages of this paper are as follows: (i) dynamic programming (DP) is a useful framework for adaptive radiation therapy, particularly adaptive fractionation, because it allows us to assess how close to optimal different methods are, ...
Schell S - - 2012
Laser-driven particle acceleration is a potentially cost-efficient and compact new technology that might replace synchrotrons or cyclotrons for future proton or heavy-ion radiation therapy. Since the energy spectrum of laser-accelerated particles is rather wide, compared to the monoenergetic beams of conventional machines, studies have proposed the usage of broader spectra ...
Alauddin Md - - 2012
Infrared (IR) predissociation of hydrogen-bonded ternary cluster ions such as aniline-water-ethanol (AWE(+)), aniline-water-isopropanol (AWP(+)), aniline-methanol-ethanol (AME(+)), aniline-water-pyrrole (AWPy(+)), and aniline-water-benzene (AWB(+)) was examined in the region of 2700-4000 cm(-1) to explore the key factors which determine the branching ratios in the concurrent unimolecular dissociation. The smaller solvent molecule was predominantly ...
Yu Guocan - - 2012
A novel non-symmetric pillar[5]arene-based anion receptor containing multiple triazole anion-binding sites was designed and synthesized. It has high affinity and selectivity for the fluoride anion.
Esterle Thomas F - - 2012
The organised nanostructure of mesoporous platinum deposited from the H(I) phase of a lyotropic liquid crystal template contains a regular, hexagonal array of uniform nanometre diameter cylindrical pores. This structure is ideally suited to the investigation of the interfacial capacitance and properties of ionic liquids confined within small pores of ...
Zhang Guofu - - 2012
A novel SBA-15 supported catalyst PdL(n)@SBA-15 containing a 2-pyridyl-1,2,3-triazole ligand framework was prepared via a "click" route, in which the click-triazole acted as both a stable linker and a good chelator. The catalyst was characterized and applied for the aerobic oxidation of alcohols, and the product was obtained in up ...
Pasierski Tomasz - - 2012
Venous thromboembolism (VTE) is a common complication of cancer. Prolonged use of low‑molecular‑weight heparin in cancer patients provides better VTE prophylaxis compared with vitamin K antagonists. Both therapeutic options have a similar safety profile. If patients on long‑term oral anticoagulation are diagnosed with cancer, they should continue treatment with vitamin ...
Mammen Manoj J - - 2012
Acute exacerbations are a major contributor to health care costs and a leading cause of death in patients with chronic obstructive pulmonary disease (COPD). A reduction in acute exacerbations of COPD (AECOPD) would lead to significant improvements in patient well‑being and survival. Bacterial and viral infections cause a majority of ...
Riv Nicoletta - - 2012
For more than 60 years, vitamin K antagonists have been the only available oral anticoagulants for the prevention of stroke and systemic embolism in atrial fibrillation (AF). Several new molecules, with a favorable pharmacokinetic profile and avoiding routine monitoring, have been recently developed, opening a new era in anticoagulation. The ...
Böttcher F - - 2012
This example of a fatal diving accident shows how challenging such cases can be in pre-hospital and clinical care. There is no common mechanism in diving fatalities and more than one group of disorders coming along with decompression sickness. Diving medicine is not an element of medical education, which results ...
Jacewicz Ewa - - 2012
Cross-generational and cross-dialectal variation in vowels among speakers of American English was examined in terms of vowel identification by listeners and vowel classification using pattern recognition. Listeners from Western North Carolina and Southeastern Wisconsin identified 12 vowel categories produced by 120 speakers stratified by age (old adults, young adults, and ...
Wells Timothy S - - 2012
It has been hypothesized that those who entered military service in the pre-September 11, 2001 era might have expectations incongruent with their subsequent experiences, increasing the risk for posttraumatic stress disorder (PTSD) or other mental disorders. A subset of Millennium Cohort Study participants who joined the military during 1995-1999 was ...
Colosi John A - - 2012
Second- and fourth-moment mode-amplitude statistics for low-frequency ocean sound propagation through random sound-speed perturbations in a shallow-water environment are investigated using Monte Carlo simulations and a transport theory for the cross-mode coherence matrix. The acoustic observables of mean and mean square intensity are presented and the importance of adiabatic effects ...
Berry Alain - - 2012
This article discusses an open-loop wave field synthesis (WFS) approach for the reproduction of spatially correlated sound fields. The main application concerns laboratory reproduction of turbulent boundary layer wall pressure on aircraft fuselages and measurement of their sound transmission loss. The problem configuration involves reconstruction of random sound pressure distributions ...
Newhall Arthur E - - 2012
During a 2 day period in mid-September 2006, more than 200, unconfirmed but identifiable, sei whale (Balaenoptera borealis) calls were collected as incidental data during a multidisciplinary oceanography and acoustics experiment on the shelf off New Jersey. Using a combined vertical and horizontal acoustic receiving array, sei whale movements were tracked ...
Balko Justin M - - 2012
Molecular profiling holds great promise for improving our ability to diagnose, prognosticate, and select individualized treatments for lung cancer patients. However, using multidimensional data and novel technologies to derive these profiles is limited by our ability to employ the assay in a clinical scenario where it can impact the course ...
Parakkal Santosh - - 2012
The Beilis-Tappert (1979) parabolic equation method is attractive for irregular terrain because it treats surface variations in terms of a simple multiplicative factor ("phase screen"). However, implementing the exact sloping-surface impedance condition is problematic if one wants the computational efficiency of a Fourier parabolic equation algorithm. This article investigates an ...
Mendelsohn Andrew R - - 2012
Abstract Cognitive decline observed in aging mammals is associated with decreased long-term synaptic plasticity, especially long-term potentiation (LTP). Recent work has uncovered a connection between LTP, histone acetylation, and brain-derived neurotrophic factor (BDNF)/neurotrophin receptor B (trkB) signaling. LTP, histone acetylation, and BDNF/trkB signaling decrease in old animals, Because an apparent ...
Suleyman Ozedmir - - 2012
Objective. Little has been published regarding long-term surgical outcome after the initial management of acute sigmoid colon volvulus. Methods. Patients undergoing primary resection and anastomosis (PRA) or Hartmann's procedure (HP) for sigmoid volvulus between September 1992 and August 2000 were reviewed. Eligible patients who had had the initial procedure at ...
Verdoodt Freija - - 2012
Macrostomum lignano (Platyhelminthes) possesses pluripotent stem cells, also called neoblasts, which power its extraordinary regeneration capacity. We have examined the cellular dynamics of neoblasts during regeneration of the rostrum in M. lignano. First, using live squeeze observations, the growth curve of the rostrum was determined. Second, neoblasts were labelled with ...
< 1 2 3 4 5 6 7 8 9 10 >