Xuejun Hou^1,2, Deli Gao¹, Zhonghou Shen¹

CMES-Computer Modeling in Engineering & Sciences, Vol.89, No.2, pp. 97-110, 2012, DOI:10.3970/cmes.2012.089.097

Abstract Microhole drilling (MHD) is a new frontier drilling technology in which the diameter of wellbore is less than 88.9mm and coiled tubing (CT) is used as drill string. The CT wound around reel for MHD has small bending radius and large length to result in large circulating flow resistance and affect normal MHD circulation. The calculation model for curvature radius and length of CT wound around reel are established by analyzing the relationships among the various geometrical parameters of the reel system. The calculation model is combined with Dean number and power-law fluid state equation… More >

S. Oukach^1,2,3, H. Hamdi², M. El Ganaoui⁴, B. Pateyron¹

FDMP-Fluid Dynamics & Materials Processing, Vol.8, No.2, pp. 173-196, 2012, DOI:10.3970/fdmp.2012.008.173

Abstract The splat formation is one of the basic processes in thermal spray coatings. The performance of these coatings is strongly related to the process of spreading and solidification of molten droplets. The aim of the present paper is to simulate the fluid flow, heat transfer and phase-change that occur when a micrometric molten droplet impacts onto a rigid substrate and to examine the effect of the substrate conditions, such as initial temperature and material on the solidification time and spreading process. The effect of thermal contact resistance is also investigated. The simulation model used is More >

Ferhat Cekmez¹, Yasemin Cekmez², Özgür Pirgon¹, Fuat Emre Canpolat¹, Secil Aydinöz³, Osman Metin Ipcioglu⁴, Ferhan Karademir³

European Cytokine Network, Vol.22, No.1, pp. 32-37, 2011, DOI:10.1684/ecn.2011.0279

Abstract Aim. The aim of this study was to investigate the relationship between four circulating adipocytokines (apelin, vaspin, visfatin, adiponectin) and markers of insulin sensitivity, in the context of polycystic ovary syndrome (PCOS) in adolescents. Subjects and methods. 48, obese, adolescent girls (mean age: 15.6±3.4 years, mean body mass index standard deviation score (BMI-SDS): 2.31±0.1), and 37 control subjects (mean age: 16.2±3 years, mean BMI-SDS: 2.17±0.05) were enrolled the study. The diagnosis of PCOS was established according to the Rotterdam criteria. Hyperinsulinism and insulin resistance was evaluated using the homeostasis model assessment (HOMA-IR) from fasting samples.… More >

Prashant Malhotra, Bruce F. Farber

Canadian Journal of Urology, Vol.18, No.3, pp. 5671-5675, 2011

Abstract Bacillus Calmette Guerin (BCG) immunotherapy is widely used for treatment of superfi cial bladder transitional cell carcinoma. Infectious complications while rare can be serious and severe disseminated infections as well as sepsis has been reported. There are no standard guidelines to direct therapy of these complications. Isoniazid is a commonly and widely used component of the various treatment regimens. Various strains of BCG are used for treatment of bladder cancer as well as vaccinations. These strains have evolved because of repeated subcultures in various laboratories in the world and have been shown to exhibit phenotypic… More >

Ralph L. Webb

Frontiers in Heat and Mass Transfer, Vol.2, No.2, pp. 1-5, 2011, DOI:10.5098/hmt.v2.2.3001

Abstract This paper discusses the “Inlet Temperature Difference” (ITD) based heat-exchanger (and its variants) design methodology frequently used by designers of electronic heat sinks. The methodology is at variance with the accepted methodology recommended in standard heat-transfer text books – the “Log-Mean Temperature Difference” (LMTD), or the equivalent “effectiveness-NTU” design method. The purpose of this paper is to evaluate and discuss the ITD based design methodology and its deficiencies. The paper shows that the ITD based method is an approximation at best. Variants of the method can lead to either under or over prediction of the More >

Zheng Miao^a, Ya-Ling He^a,*, Tian-Shou Zhao^b, Wen-Quan Tao^a

Frontiers in Heat and Mass Transfer, Vol.2, No.1, pp. 1-10, 2011, DOI:10.5098/hmt.v2.1.3001

Abstract A non-isothermal two-phase mass transport model is developed in this paper to investigate the heat generation and transport phenomena in a direct methanol fuel cell with anisotropic gas diffusion layers (GDLs). Thermal contact resistances at the GDL/CL (catalyst layer) and GDL/Rib interfaces, and the deformation of GDLs are considered together with the inherent anisotropy of the GDL. Latent heat effects due to condensation/evaporation of water and methanol between liquid and gas phases are also taken into account. Formulation of the two-phase mass transport across the membrane electrode assembly (MEA) is mainly based on the classical More >

CHEN Cheng, SHAO Yongbo, YANG Jie

The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.4, pp. 117-118, 2011, DOI:10.3970/icces.2011.016.117

Abstract A group of finite element models, reinforced circular hollow section (CHS) T-joints, are established to investigate the fire resistance compared with the un-reinforced by using finite element program ABAQUS in this paper. Sequentially coupled thermal-stress analysis is used to simulate the process of tubular T-joint under different loading levels in the condition of fire. The heat properties of the steel use the specified values in Eurocode 3. The fire resistance performance of collar plate reinforce CHS T-joints and the un-reinforced models are studied under different loading levels. The applied loads are 20%, 40%, 60% and… More >

İlhan Tarkun¹, Emre Dikmen², Berrin Çetinarslan¹, Zeynep Cantürk¹

European Cytokine Network, Vol.21, No.4, pp. 272-277, 2010, DOI:10.1684/ecn.2010.0217

Abstract Background. Adipose tissue synthesizes various adipokines such as resistin, adiponectin and visfa-tin, which have an effect on insulin resistance. This study was designed to show the effect of metformin, one of the most important drugs used to reduce insulin resistance in patients with polycystic ovary syndrome (PCOS), on these adipokines. Methods. The study group consisted of 24 women with PCOS and 25 healthy, age- and weight-matched, normally menstruating women. Hormone and lipid profiles, visfatin, adiponectin and resistin were measured in all cases, before and after metformin treatment. Results. Serum visfatin levels were found to be… More >

William H. Carlson, David G. Bell, Joseph G. Lawen, Ricardo A. Rendon

Canadian Journal of Urology, Vol.17, No.2, pp. 5135-5137, 2010

Abstract Three male physicians underwent transrectal ultrasound guided prostate biopsies for elevated prostate-specific antigen levels or irregular digital rectal exam fi ndings. All three of these patients developed urosepsis secondary to multi-drug resistant organisms despite antibiotic prophylaxis. There are increasing reports of infectious complications following prostate biopsy caused by multi-drug resistant organisms. These cases highlight the potentially lethal risks to healthcare workers who are more likely to harbor multi-drug resistant organisms than the general population. Further research into preoperative assessment and appropriate antibiotic prophylaxis in all potentially high risk patients is warranted. More >

Cerna¹ E, Y Ochoa², R Mendoza¹, MH Badii³, G Gallegos¹, J Landeros¹

Phyton-International Journal of Experimental Botany, Vol.79, pp. 147-152, 2010, DOI:10.32604/phyton.2010.79.147

Abstract Protein assays were conducted on Tetranychus urticae Koch, as potential resistance detection tools to plaguicides. This is a phytophagous mite that feeds on a large variety of plants. Experiments were carried out using a pesticide susceptible and three field crop strains of T. urticae. Protein was measured by colorimetric assays, using Kit-II from Bio-Rad, with bovine serum albumin (BSA) as standard. Homogenates were prepared using 10, 30, 50, 100, 300, 500 and 800 mites, with 30 replicates each. Linearity was obtained for the standard curve of the different methods, and r² values ranged from 0.877 to 0.985. The More >