Results 31 to 40 of about 26,640,317 (249)
Shiyou jixie, 2015 在深水测试过程中，测试管柱下入井后其受力和变形无法观测，密封插管长度的不合理设置会造成封隔器密封失效及井下管柱永久变形等严重事故。为保障深水测试作业安全高效实施，对深水井下管柱轴向变形原理和规律进行研究，形成密封插管安全长度确定方法，并以我国南海某深水井为对象进行实例分析。计算结果表明，不同作业工况下测试管柱轴向变形相差较大，开井作业测试管柱的伸长量随着测试产量的增加而增加，温度和压力是深水井下测试管柱轴向变形的主要影响因素；建议选择关井后密封插管相对开井作业的上移距离为密封插管安全长度的参考值 ...
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi +5 more
wiley +1 more source
Shiyou jixie, 2015 为了避免钻井隔水管在深海环境中出现涡激振动现象，利用ANSYS软件，针对带浮力块和不带浮力块的隔水管系统进行了模态分析。定量研究了浮力块密度、长度及不同布置位置对隔水管固有频率的影响。研究结果表明，布置浮力块后隔水管的各阶固有频率都会相应增大；当隔水管布置浮力块的长度与起始位置相同时，随着浮力块密度的增大，隔水管的各阶固有频率值相应减小；当布置浮力块的密度与长度相同，且布置浮力块的位置靠近隔水管的下端时，隔水管的各阶固有频率越小；当布置浮力块的密度与起始布置位置相同时 ...
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Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley +1 more source
Shiyou jixie, 2014 目前国内生产的直流钻机没有能耗制动功能，由于生产进度的原因，司钻经常使游吊系统下放得很快，在接近钻台时快速刹车，这种操作方式不仅会损坏设备，同时存在安全隐患。为此，设计了石油钻机智能缓冲防喷装置。该装置由主控计算机、绝对值编码器、悬重检测变送器、报警装置、输出信号以及刹车系统等组成。装置通过安装在绞车滚筒轴上的绝对值编码器实时检测滚筒旋转的角度，由主控计算机计算出游吊系统的位置和速度，并与司钻设置的预警高度、缓冲高度、减速目标速度及最大下放速度进行比较，实时调整刹车力矩。现场试验结果表明 ...
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai +4 more
wiley +1 more source
Shiyou jixie, 2014 为适应市场对钻机自动化、智能化、无人化操作的需求，以及贯彻以人为本的HSE理念，研制了TJG93/4-10自动井架工。该产品主要由主轴旋转单元、多臂移动单元、钻柱检测控制单元及电液控制系统等4部分组成，能够适用直径为73.0~247.6 mm（27/8~93/4in）的钻具，最大提升重力达到100 kN。研究及试验结果表明，TJG 93/4-10自动井架工结构设计合理，排放钻柱能力强，操作灵活可靠，系统运行平稳。将其应用于现场钻井作业，可实现二层台钻柱排放作业机械化、无人化操作 ...
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada +6 more
wiley +1 more source
Shiyou jixie, 2014 为满足水深更深、钻深能力更强的海洋钻机的需求，研制了9 000 m海洋超深井钻机井架。该井架最大钩载6 750 kN，满足海洋9 000 m钻机作业需要。通过有限元分析优化及采用单斜瓶颈式结构，减轻了井架重力；采用新型栓装结构，降低了安装难度；采用了三维设计技术，减少了加工制造过程中的问题。最大钩载静载荷试验中测得的最大应力为1202 MPa，测试点材料的屈服强度为345 MPa，结构的安全系数大于API Spec 4F规范要求的数值（1.67），这说明井架设计满足API Spec 4F规范要求。
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A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho +7 more
wiley +1 more source