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141篇 您的检索式:作者名="Barb R"
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1Ultrafine Grained HSLA Steels for Cold Forming显示文摘The industrial level production of ultrafine grained(or ultrafine ferrite)ferrous alloys was investigated through three examples of steels that complied with the EN 10149-2 Euronorm and were produced by advanced controlled hot rolling techniques.The steel samples were tension tested and chemically analyzed,and the microstructure was evaluated through quantitative metallographic techniques to determine parameters such as yield stress,amount of microalloying elements,strain hardening coefficient,grain size,and grain size distribution.These steels were microalloyed with Ti,Nb,and Mn with ASTM grain sizes of approximately 13-15.The careful control of chemical composition and deformation during production,giving a specific attention to the deformation sequences,austenite non-recrystallization temperatures and allotropic transformations during cooling,are indispensable to obtain steels with an adequate strain hardening coefficient that allows cold working operations such as bending,stretching or drawing.R González J O García M A Barbés M J Quintana L F Verdeja J I Verdeja 2010Journal of Iron and Steel Research(International)2010,17,10:7
2Circular smooth muscle contributes to esophageal shortening during peristalsis显示文摘AIM:To study the angle between the circular smooth muscle(CSM) and longitudinal smooth muscle(LSM) fibers in the distal esophagus.METHODS:In order to identify possible mechanisms for greater shortening in the distal compared to proximal esophagus during peristalsis,the angles between the LSM and CSM layers were measured in 9 cadavers.The outer longitudinal layer of the muscularis propria was exposed after stripping the outer serosa.The inner circular layer of the muscularis propria was then revealed after dissection of the esophageal mucosa and the underlying muscularis mucosa.Photographs of each specimen were taken with half of the open esophagus folded back showing both the outer longitudinal and inner circular muscle layers.Angles were measured every one cm for 10 cm proximal to the squamocolumnar junction(SCJ) by two independent investigators.Two human esophagi were obtained from organ transplant donors and the angles between the circular and longitudinal smooth muscle layers were measured using micro-computed tomography(micro CT) and Image J software.RESULTS:All data are presented as mean ± SE.The CSM to LSM angle at the SCJ and 1 cm proximal to SCJ on the autopsy specimens was 69.3 ± 4.62 degrees vs 74.9 ± 3.09 degrees,P = 0.32.The CSM to LSM angle at SCJ were statistically significantly lower than at 2,3,4 and 5 cm proximal to the SCJ,69.3 ± 4.62 degrees vs 82.58 ± 1.34 degrees,84.04 ± 1.64 degrees,84.87 ± 1.04 degrees and 83.72 ± 1.42 degrees,P = 0.013,P = 0.008,P = 0.004,P = 0.009 respectively.The CSM to LSM angle at SCJ was also statistically significantly lower than the angles at 6,7 and 8 cm proximal to the SCJ,69.3 ± 4.62 degrees vs 80.18 ± 2.09 degrees,81.81 ± 1.75 degrees and 80.96 ± 2.04 degrees,P = 0.05,P = 0.02,P = 0.03 respectively.The CSM to LSM angle at 1 cm proximal to SCJ was statistically significantly lower than at 3,4 and 5 cm proximal to the SCJ,74.94 ± 3.09 degrees vs 84.04 ± 1.64 degrees,84.87 ± 1.04 degrees and 83.72 ± 1.42 degrees,P = 0.019,P = 0.008,P = 0.02 respectively.At 10 cm above SCJ the angle was 80.06 ± 2.13 degrees which is close to being perpendicular but less than 90 degrees.The CSM to LSM angles measured on virtual dissection of the esophagus and the stomach on micro CT at the SCJ and 1 cm proximal to the SCJ were 48.39 ± 0.72 degrees and 50.81 ± 1.59 degrees.Rather than the angle of the CSM and LSM being perpendicular in the esophagus we found an acute angulation between these two muscle groups throughout the lower 10 cm of the esophagus.CONCLUSION:The oblique angulation of the CSM may contribute to the significantly greater shortening of distal esophagus when compared to the mid and proximal esophagus during peristalsis.Anil K Vegesna Keng-Yu Chuang Ramashesai Besetty Steven J Phillips Alan S Braverman Mary F Barbe Michael R Ruggieri Larry S Miller 2012World Journal of Gastroenterology2012,18,32:7
3持续气道正压通气在预防阻塞性睡眠呼吸暂停患者心血管事件中的作用显示文摘阻塞性睡眠呼吸暂停(obstructive sleep apnea,OSA)导致阵发性低氧血症,夜间交感神经系统激活,血压、氧化应激和炎症指标的升高以及高凝血症。较大的胸内负压波动也会给心脏和大血管施加机械应力。基于人群和睡眠诊所的队列研究显示,OSA与心脑血管事件,特别是脑卒中相关。McEvoy RD Antic NA Heeley E Luo Y Ou Q Zhang X Mediano O Chen R Drager LF Liu Z Chen G Du B McArdle N Mukherjee S Tripathi M Billot L Li Q Lorenzi-Filho G Barbe F Redline S Wang J Arima H Neal B White DP Grunstein RR Zhong N Anderson CS 练桂丽 叶鹏 2016中华高血压杂志2016,24,11:4
4The brain-pituitary-adipocyte axis:role of leptin in modulating neuroendocrine function显示文摘Barb C R 1999J Anim Sci1999,77,:2
5Modulation of growth hormone, luteinizing hormone,and testosterone secretion by excitatory amino acids in boars显示文摘ESTIENNE M J BARB C R 2002Reprod Biol2002,2,1:1
6Surface morphology changes during initial usage of hydrophobic, microporous polypropylene membranes 显示文摘Barbe A M Hogan P A Johnson R A 2000J Membr Sci2000,172,12:1
7The control of adenohypophysial hormone secretion by amino acids and peptides in swine显示文摘Estienne M J Barb C R 2005Domest Anim Endocrinol2005,29,1:1
8Opioid modulation of FSH,growth hormone and prolactin secretion in the prepubertal gilt显示文摘Barb C R Kraeling R R Rampacek G B 1992Endocrinology1992,133,:1
9Cytokines and acute phase pro- teins associated with acute swine influenza infection in pigs 显示文摘Barbe F Atanasova K Van R 2011Veteri- nary Journal2011,187,:1
10Prolonged cyclooxygenase-2 induction in neurons and glia following traumatic brain injury in the rat显示文摘Strauss K I Barbe M F Marshall R M 2000J Neurotraama2000,17,8:1
11The HITRAN 2008 molecular spectroscopic database 显示文摘Rothman L S Gordon I E Barbe A ChrisBenner D Bernath P F Birk M Boudon V Brown L R Campargue A Champi-on J P Chance K Coudert L H Dana V Devi V M Fally S Flaud J M Gamache R R Goldman A Jacquemart D Klein er I Lacome N Lafferty W J Mandin J Y Massie S T Mikhailenko S N Miller C E Moazzen A N Naumenko 0 VNikitin A V Orphal J Perevalov V I Perrin A Predoi C A Rinsland C P Rotger M ime kovd M Smith M A H Sung K Tashkun S A Tennyson J Toth R A Vandaele A C Vander A J 2009Journal of Quantitative Spectroscopy Radiative Transfer2009,110,:1
12The brain-pituitary-adipocyte axis:role of leptin in modulating neuroendocrine function显示文摘 1999J Anim Sci1999,77,:1
13The role of melanocortin 3 and-4 receptor in regula- ting appetite, energy homeostasis and neuroendocrine function in the pig显示文摘BARB C R ROBERTSON A S BARRETT J B 2004J Endocrinol2004,181,1:1
14Formation ofsilica nanoparticles in microemulsions显示文摘Finnie K S Bartlett J R Barbe CJA 2007Langmuir2007,23,6:1
15Nutritional regulators of the hypothalamic-pituitary axis in pigs显示文摘BARB C R KRAELING R R RAMPACEK G B 2001Reprod2001,,58:1
16Microrna let-7: an emerging next-generation cancer therapeutic显示文摘Barb D Malhotra R Ravi B 2010Curt Oncol2010,17,1:1
17Poststroke dementia: Clinical features and risk factors显示文摘Barb R Martinez ES Rodrigue GE 2000Stroke2000,31,7:1
18Long form leptin receptor mRNA expression in the brain, pituitary, and other tissues in the pig显示文摘 Barb C R Matteri R L 2000Domest Anim Endocrino2000,19,:1
19Serum concentrations of luteinizing hormone, growth hormone, and cortisol in gilts treated with N-methyl-D, L-aspartate during the estrous cycle or after ovariectomy显示文摘Estienne M J Hurlock W F Barb C R 1998J Anim Sci1998,76,:1
20A comparison of three methods of wood density assessment in a Pinus elliottii progeny test显示文摘Gough G Barbes R D 1984South Afiican Forestry1984,128,1:1
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