Results 71 to 80 of about 13,988 (180)
Shiyou jixie, 2012 K80海洋修井机在渤海油田SZ36-1B平台新增井位作业时，可能会出现各橇座之间相对滑动或整机倾覆等问题。为此，采用StruCAD*3D三维空间梁结构分析计算软件建立结构分析模型，对修井机稳定性进行分析计算，提出修井机下移动底座加固设计和改造方案。截至目前，K80海洋修井机顺利完成了对新增井位4口井的检泵作业和2口井的大修作业，整机稳定性好，各橇块之间无相对滑动现象。因此，K80海洋修井机稳定性理论分析和计算结果正确，修井机下移动底座加固改造是成功的。
丁辉 +4 more
doaj
Neural Networks for Optimization and Their Stability Analysis [PDF]
, 2006 递归神经网络具有较强的优化计算能力，是目前神经计算应用最为广泛的一类神经网络模型．本文针对约束鞍点问题和球覆盖最小半径的计算问题，分别利用投影法、对目标函数加上很小“扰动函数”的逼近法、罚函数法和梯度法等建立神经网络模型进行求解，并基于LaSalle不变集原理和Lyapunov直接法等工具，对模型的动态特性进行研究，从而设计出避免陷入局部极小的优化计算神经网络模型．全文共分五章：第一章简要回顾了优化计算神经网络研究的发展概况，以及利用神经网络求解鞍点问题和球覆盖最小半径问题的研究现状 ...
沈喜生
core
Rare Metals, EarlyView.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
wiley +1 more source
Gaoya dianqi, 1983 对高温等离子体、低温等离子体,特别是时气吹断路器中的等离子体不稳定性的类型进行了概述和讨论。分析表明开关电弧的流动不稳定性、磁不稳定性可明显提高断路器的开断能力,而振荡不稳定性对灭弧的影响似乎是可以不考虑的。
过增元
doaj
Rare Metals, EarlyView.ABSTRACT As a core component in the electrochemical water splitting system, the cathode catalyst is capable of boosting the kinetics of the hydrogen evolution reaction (HER), while the scarcity and expenditure of current noble metal‐based electrocatalysts seriously restrict the large‐scale commercial development of hydrogen manufacturing devices. Here,
Haiyan He +8 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Narrowband near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) featuring low full‐width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging.
Chunshen Li +4 more
wiley +1 more source
Gaoya dianqi, 1982 文章从插入式触头的电动力分析,电流强度与电动稳定性的关系,触指数目与电动稳定性的关系三个方面探讨了插入式触头的电动稳定性的设计与计算,提出了工程计算式并作了实例验证。
顾丕骅
doaj
Establishment of An Effective System to Develop Avian Polyclonal Antibodies and Its Primary Application [PDF]
, 2016 小鼠单克隆抗体技术已成为生物医药领域不可或缺的研究工具，在疾病的诊断和治疗领域也得到广泛应用。然而，由于小鼠自身免疫系统的局限，某些抗原或表位，特别是同为哺乳动物的人体抗原在小鼠体内可能因为种属相近而不易产生好的免疫应答，给制备相应的小鼠单克隆抗体造成一定的困难。因此，有必要基于其它种属动物开发新的抗体制备技术。禽源抗体技术也称卵黄抗体技术（简称IgY技术），是用免疫原刺激禽类动物，产生相应的特异性抗体，该抗体会转运、储存在卵黄中，经特殊的提取技术，可从卵黄中获得大量特异性的多克隆抗体的一种抗体制备技术。
康雅虹
core
Rare Metals, EarlyView.ABSTRACT Against the backdrop of global clean energy transition and surging demand for lithium resources, lithium extraction from salt lakes presents unprecedented development opportunities. Nanofiltration (NF) membrane technology, recognized for its efficiency, energy savings, and environmental benefits, demonstrates significant application potential ...
Wen‐Feng Li +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang +11 more
wiley +1 more source