Search Results
Results 101 - 150 of 1199
1 2 3 4 5 6 7 8 9 10 >
Mescher Marleen - - 2013
This paper demonstrates a new method for the top-down production of silicon nanowire field effect transistors for sensing applications. A simple and robust method for the fabrication of these devices is described, using only conventional CMOS (Complementary Metal Oxide Semiconductor) processing techniques making it manufacturable on large scale in a ...
Tao Yourong - - 2013
Nanorods, nanotubes, and nanocubes of alpha-Fe2O3 were synthesized via a hydrothermal process and subsequent calcination treatment. The typical nanorod has about 71 nm in width, 7 nm in thickness, and 314 nm in length. The nanotube has outer diameter of 90-110 nm, inner diameter of 40-80 nm, and lengths of ...
Seo Yeong-Hui - - 2013
Aqueous Cu nanoparticles are synthesized using a reducing agent and surface capping molecule which prevents the interparticular agglomeration and surface oxidation. Aqueous conductive nano ink is prepared using the resulting Cu nanoparticles and conductive Cu layers are prepared via a wet coating process. The conductive Cu layers, metalized by annealing ...
Ye Xiaoming - - 2013
Laparoscopic surgery for common bile duct stones varies procedurally from a transcystic approach to laparoscopic choledochotomy (LC) with or without biliary drainage. However, LC is a difficult procedure with higher documented morbidity than the transcystic approach. We retrospectively investigated risk factors for adverse outcomes of LC. We used logistic regression ...
Chiu Chieh Jack - - 2013
Laparoscopic adjustable gastric banding (LAGB) is considered a safe and effective treatment for severe obesity and obesity-related comorbidities. We sought to examine the outcome of LAGB delivered through a Canadian publicly funded obesity program. We retrospectively analysed the cases of patients who underwent LAGB within a comprehensive, multidisciplinary, publically funded ...
Kim E Y - - 2013
The effect of Mn and P on the macroscopic texture of Ti-Nb stabilized IF steels was investigated. In order to examine the evolution of microstructure and macroscopic texture during the hot-rolling, cold-rolling and annealing processes, microstructure characterization was conducted for hot-rolled, cold-rolled and annealed specimens. The initial grain size of ...
Spiegle Gillian - - 2013
Recent trials have shown that cytoreductive surgery and heated intraperitoneal chemotherapy (S+HIPEC) for colorectal cancer carcinomatosis (CRC-C) leads to 5-year, disease-free survival rates of more than 30%. Since these data represent a substantial change in the management of CRC-C, the objectives of this study were to determine physicians' awareness of ...
Sustaita Alan O - - 2013
We apply functionalized carbon nanoshell and carbon sphere based composites in poly(vinylphenol) matrix in write-once-read-many-times memory elements. The devices based on carbon nanoshells show an ON/OFF current ratio of 10(5) and long-term information retention. The functionalized carbon nanoshells and carbon spheres show improved dispersion in the poly(vinylphenol) matrix, allowing the ...
Planting Anneke - - 2013
Anal dilation during tumour excision with transanal endoscopic microsurgery (TEM) has caused concerns regarding postoperative anal function. We sought to determine whether TEM affects anorectal function and quality of life. All patients undergoing TEM between March 2007 and December 2008 were considered for inclusion. We excluded patients who were treated ...
Park Se Won - - 2013
In this study, novel ruthenium complexes substituted with donor antenna group were designed and studied theoretically to enhance the photovoltaic. We have compared the well known N3 dye and Ru(II) complexes substituted with antenna groups, such as a conjugated phenoxazine (POZ) of one site, two conjugated POZs of both site ...
Kim You-Kyoung - - 2013
Small interfering RNA (siRNA) is a promising candidate for gene therapy due to the strong and specific gene silencing effects. However, to effectively silence any protein, lack of an efficient delivery system is major obstacle for siRNA therapeutics. In the present study, we report on the development of a novel ...
McColl Ryan J - - 2013
Mortality for liver resection has remarkably improved owing to multiple factors. We sought to determine the impact of the various types of fellowship training on patient survival after liver resection. Patients who underwent hepatic resection between 1995 and 2004 in either the Calgary or Capital health regions (Edmonton) of Alberta, ...
Lim Y - - 2013
A TiO2-modified carbon (C-TiO2) has been employed as a catalyst support of Pd3Co alloy for electroduction of oxygen. Due to the strong interaction between highly dispersed TiO2 and Pd3Co alloy, the C-TiO2 support was shown to be effective for a fine dispersion of Pd3Co alloys. The degree of sintering of ...
Degirolamo Kristin M - - 2013
The occupational hazard associated with percutaneous injury in the operating room (OR) has encouraged harm reduction through behaviour change and the use of safety-engineered surgical sharps. Some Canadian regulatory agencies have mandated the use of "safety scalpels." Our primary objective was to determine whether safety scalpels reduce the risk of ...
Sun Bo - - 2013
We investigated the controlled fabrication of uniform vertical aligned silicon nanowires with desired length, diameter and location by combining nanosphere lithograph and metal assisted chemical etching techniques. The close-packed polystyrene nanospheres array was obtained by self-assemble technique, followed by reactive ion etching to acquire a non-close-packed monolayer template. Subsequently, the ...
Tufescu Ted - - 2013
We sought to determine if angulation or translation measured on the lateral preoperative injury radiographs of patients with 31A2 pertrochanteric fractures is related to excessive postoperative shortening when treated with a sliding hip screw. We retrospectively reviewed the radiographs of consecutive patients with hip fractures treated at a level I ...
Han Seung Cheol - - 2013
The electrical properties of Ni-based ohmic contacts to N-face p-type GaN were investigated. The specific contact resistance of N-face p-GaN exhibits a linear decrease from 1.01 omega cm2 to 9.05 x 10(-3) omega cm2 for the as-deposited and the annealed Ni/Au contacts, respectively, with increasing annealing temperature. However, the specific ...
Lee James - - 2013
With various types of complex patients being treated in a mixed medical- surgical- trauma intensive care unit (ICU), we hypothesized that there should be no difference in patient mortality with respect to the core training of the intensivist. We reviewed the cases of all patients admitted to a mixed medical-surgical-trauma ...
Jeun Minhong - - 2013
In this work, the AC magnetically-induced heating characteristics of various viscous nanofluids with either soft ferrite (Fe3O4) or hard ferrite (CoFe2O4) superparamagnetic nanoparticles (SPNPs) were investigated to empirically and physically interpret the contribution of "Néel relaxation loss power, P(Néel relaxation loss)," or "Brown relaxation loss power, P(Brown relaxation loss)," to ...
Gamme Gary - - 2013
Laparoscopic splenectomy (LS) has become an established standard of care in the management of surgical diseases of the spleen. The present article is an update and review of current procedures and controversies regarding minimally invasive splenectomy. We review the indications and contraindications for LS as well as preoperative considerations. An ...
Yang Junsong - - 2013
A rapid chemical method has been developed for the synthesis of the CdTe nanoribbons with cubic crystalline phase. The method is based on the template-engaged synthesis in which the Te nanowires were used as template reagents. On the basis of a series of experiments and characterizations, the electrochemical property of ...
Xue Zhen - - 2013
The chirality of the silicas attracted much attention, due to their potential applications in asymmetric catalysis and enantioseparation. However, their chirality has not been well understood. Herein, a chirality indicator for the surfaces of the silica nanotubes was developed. The helical silica nanotubes were prepared through a sol-gel transcription approach. ...
Zhou Jianhai - - 2013
Fast synthesis of nanosized zeolite is desirable for many industrial applications. An ultrafast synthesis of LTA nanozeolite by the organic-additive-free method in a two-phase segmented fluidic microreactor has been realized. The results reveal that the obtained LTA nanozeolites through microreactor are much smaller and higher crystallinity than those under similar ...
Pelletier Jean-Sébastien - - 2013
Previous studies, including research published more than 10 years ago in Northern Alberta, have demonstrated improved outcomes with increased surgical volume and subspecialisation in the treatment of rectal cancer. We sought to examine contemporary rectal cancer care in the same region to determine whether practice patterns have changed and whether ...
Ball Chad G - - 2013
Celebrity injury-related deaths are a common topic of conversation and receive wide media coverage. Despite stereotypes and broad generalizations, it is unclear if the mechanisms of demise echo those of the general population. The objective of this study was to evaluate the epidemiology underlying celebrity traumatic deaths. We evaluated all ...
Kim Sang Woo - - 2013
Nanostructured magnesium oxide catalyst support materials with controlled morphology and size were synthesized from a supercritical carbon dioxide/ethanol solution via chemical reaction of soluble precursors and subsequent thermal decomposition. Leaf-like magnesium hydroxide precursors with high specific surface area were formed by a low-temperature chemical reaction at below 140 degrees C, ...
Joos Eacute Milie - - 2013
Acute care surgery (ACS) comprises trauma and emergency surgery. The purpose of this new specialty is to involve trauma and nontrauma surgeons in the care of acutely ill patients with a surgical pathology. In Quebec, few acute care surgery services (ACSS) exist, and the concept is still poorly understood by ...
Jeon Young-Chul - - 2013
Carbon coils could be synthesized using C2H2/H2 as source gases and SF6 as an incorporated additive gas under thermal chemical vapor deposition system. The surface morphologies of samples were investigated step by step during the beginning stage of the process. After finishing the substrate temperature set to 750 degrees C, ...
Christou Nicolas - - 2013
Canada needs to increase capacity for bariatric surgery to reduce the wait for this cost-effective, life-saving surgery. The aim of this study was to test whether laparoscopic bariatric surgery, including gastric bypass, can be delivered safely in secondary health care centres (SHCCs). In this prospective cohort study, patients received bariatric ...
Gondal M A - - 2013
Nano-structured Cupric Oxide (CuO) has been synthesized using pulsed laser ablation of pure copper in water using Q-switched pulsed laser beam of 532 nm wavelength and, 5 nanosecond pulse duration and laser pulse energy of 100 mJ/pulse. In the initial unannealed colloidal suspension, the nanoparticles of Copper (Cu) and Cuprious ...
Grondin Sean C - - 2013
The purpose of this study is to describe the demographics, training and practice characteristics of physicians performing thoracic surgery across Canada to better assess workforce needs. We developed a questionnaire using a modified Delphi process to generate questionnaire items. The questionnaire was administered to all Canadian thoracic surgeons via email ...
Nguyen Dung The - - 2013
Monodispersed Fe3O4 nanospheres with hollow interior structures were synthesized without any template. Those nanoparticles exhibited a ferromagnetic behavior with a high saturation magnetization of 81.0 emu g(-1). The hollow structure was formed based on the aggregation of many primary particles, followed by Oswald ripening process. Due to the energy difference ...
Son Myounghee - - 2013
Gold nanoparticles have been silver-joined to fabricate nanowires by irradiating gold nanospheres of 25 nm in diameter and silver nanospheres of 8 nm in diameter held together on a carbon-coated copper grid with a 30 ps laser pulse of 532 nm for 20 min at a fluence of 3.0 mJ/cm2. ...
Leblanc Justin - - 2013
Surgical simulators provide a safe environment to learn and practise psychomotor skills. A goal for these simulators is to achieve high levels of fidelity. The purpose of this study was to develop a reliable surgical simulator fidelity questionnaire and to assess whether a newly developed virtual haptic simulator for fixation ...
Wu Chia-Yang - - 2013
The electrical and material properties of Copper (Cu) mixed with [0-10 atomic% manganese (Mn)] and pure Cu films deposited on silicon oxide (SiO2)/silicon (Si) are explored. Cu electroplating on self formed CuMn barrier was investigated with different Mn content. The electrochemical deposition of the Cu thin film onto the electrode ...
Cho Donghyun - - 2013
We present the employment of few layer graphene (FLG) as a matrix for the analysis of low molecular weight polymeric compounds using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The practicality of FLG as a matrix for MALDI experiments is demonstrated by analyzing low molecular weight polymers, polar polyethylene ...
Cao Bailai - - 2013
The well controlled alpha,alpha'-bis(4-phenyl-1,3-butadienylidene)-acetone (BPBA) nanowires and nanotubes were prepared by a template wetting method. The diameter and length of BPBA nanowires and nanotubes were identical to template pores, diameter -80 nm and length -60 microm. This facile general approach can be used for the preparation of nanowires and nanotubes ...
Chang Ming - - 2013
Mechanical properties of gold nanowires were individually determined in this investigation using a multifunctional nanomanipulator inside a scanning electron microscope (SEM). Gold nanowires were synthesized by an electrochemical deposition technique. Three different characterization techniques including tensile, buckling and bending tests were adapted to quantitatively determine Young's modulus, yield stress and ...
Jeon Young-Chul - - 2013
By SF6 gas incorporation for relatively short time during the initial deposition stage, carbon coils could be formed on nickel catalyst layer-deposited silicon oxide substrate using C2H2 and H2 as source gases under thermal chemical vapor deposition system. The characteristics (formation density and morphology) of as-grown carbon coils were investigated ...
Kuzhir P - - 2013
We report on the experimental study of electromagnetic (EM) properties of multilayered graphene in K(a)-band synthesized by catalytic chemical vapor deposition (CVD) process in between nanometrically thin Cu catalyst film and dielectric (SiO2) substrate. The quality of the produced multilayered graphene samples was monitored by Raman spectroscopy. The thickness of ...
Song Peng-Yuan - - 2013
Ni(1-x)Fe(x)O (x = 0-0.05) nanoplatelets were synthesized by a facile hydrothermal process. The crystal structure and morphology of the samples were characterized by X-ray diffraction and field emission scanning electron microscopy. The incorporation and the valence state of Fe in NiO nanoplatelets were determined by X-ray photoelectron spectroscopy. Doping NiO ...
Kim Jung-Hyun - - 2013
The effect of catalyst support on the aqueous phase reforming of ethylene glycol over supported 2 wt% Pt/Ce0.15Zr0.85O2 catalysts have been investigated. Various types of Ce0.15Zr0.85O2 mixed oxides were prepared by hydrothermal precipitation (CZH), modified precipitation (CZM), co-precipitation (CZC), sol-gel (CZS) methods, respectively. Catalysts were characterized by XRD, N2 sorption ...
Jang Seokju - - 2013
The thermal properties of diopside (CaMgSi2O6)-based glass-ceramics of varying CaO/MgO ratio were investigated as a function of sintering temperature. The crystallization behavior of the glass was studied by a non-isothermal method using a differential thermal analysis (DTA) with various heating rates. Diopside, as a main crystalline phase, and cordierite, as ...
Muthuraman G - - 2013
Electrocrystallization of PbO2 on Ti electrode was studied in different bath solutions using cyclic voltammetry (CV), chronoamperometry (CA), and scanning electron microscopy. The cyclic voltammetry studies revealed that the addition of methanol postponed the oxygen evolution region and made over potential nucleation of PbO2 on Ti. Oxidation of PbO2 is ...
Han Yong-Hyeon - - 2013
Poly(3,4-ethylenedioxythiophene) (PEDOT) has good properties as a conductive polymer such as high conductivity, optical transmittance, and chemical stability, while offering relatively weak physicochemical properties. The main purpose of this paper is to improve physicochemical properties such as solvent resistance and pencil hardness of PEDOT. Carboxyl groups in the poly(MMA-co-MAA) polymer ...
Kumar R Thinesh - - 2013
The effect of ethylenediamine addition in the sol-gel method for the preparation of pure and Sr(II)-added nano copper aluminate (CuAl2O4) composites for the enhancement in their structural, electrical, and alcohol sensing properties were investigated. The effect of addition of Sr(II) to pure CuAl2O4 in both the methods were also discussed. ...
Sun Shaolin - - 2013
A simple solvothermal approach has been developed for the fabrication of large-scale single-crystalline Sb2Se3 nanowires. The average diameter of the nanowires is about 100 nm, and the length is range from 1 to 2 microm. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and electron diffraction were ...
Ma Xiaojian - - 2013
3C-SiC nanostructures have been synthesized from Si, maltose or glucose and Mg at 120 degrees C in the presence of I2. The as-obtained products are the mixtures of wire-like and tower-shaped SiC nanostructures. Transmission electron microscopy (TEM) and scanning electron microscope (SEM) images show that wire-like nanostructures are formed by ...
Ji Pengfei - - 2013
Through a catalyst-free chemical vapor deposition method, highly oriented ZnO nanowires and microtubes were simultaneously grown on the side and the top surface of Si substrate respectively. The ZnO nanowires and microtubes were characterized by scanning electron microscopy, X-ray diffraction, transmission electron microscopy and selected area electron diffraction. The growth ...
Ota Jyotiranjan - - 2013
A simultaneous functionalization and reduction route to prepare stable dispersion of reduced graphene oxide from graphene oxide has been described. Diethanol amine has been introduced for the first time as an environment friendly reducing agent in a simple reflux reaction. Diethanol amine acts as a reducing agent and helps to ...
1 2 3 4 5 6 7 8 9 10 >