Results 61 to 70 of about 52,444 (177)
Gaoya dianqi, 2020 利用有限元软件对40.5 kV瓷支柱绝缘子在温度剧变条件下的机械性能进行了仿真研究,包括温度剧变产生的温度应力以及对弯曲载荷和扭转载荷的影响,温度范围为-40～+80℃（初始温度为20℃）。研究发现,在低温或者高温条件下,瓷支柱绝缘子不同介质的连接位置均会出现明显的应力集中现象;同时,在施加弯曲载荷时,高温会使瓷支柱绝缘子承受更大的应力,而在低温时应力会随温度的降低而减小;而在施加扭转载荷时,瓷柱的不同位置在不同温度下所承受的应力有所不同,上瓷根所受应力随温度升高而减小,下瓷根所受应力随温度升高而升高 ...
王博 +6 more
doaj
ヤマユリ シュシ ノ ハツガ ソクシン ニ カンスル ケンキュウ [PDF]
, 1994 【摘要】ヤマユリ種子は播種後下記の段階をへて出葉に至る:高温感応期(種子休眠打破段階)，地下発芽・小球形成期,低温感応期(上胚軸休眠打破段階)，出葉期(地上に葉が出現する段階).本報告では，播種から出葉までの日数を最短にする条件を明らかにすることを目的として,各段階の休眠打破，発育をすみやかに進める温度条件などについて検討し，以下の結果を得た.高温感応期は種子を湿状態で290℃,6週間の処理を行うと休眠打破効果が大きく，次の段階で地下発芽が促進された.高温処理後から低温処理開始までの間に地下発芽し ...
原 靖英, 高樹 英明
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Highly Anisotropic TbCo11Ti: Phase Evolution, Microstructure and Magnetic Properties
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Among the 1:12‐type compounds, TbCo11Ti stands out due to its high Curie temperature and pronounced magnetocrystalline anisotropy. However, its magnetic behavior at room temperature and its phase evolution process have not been clearly established.
Wei Chen +11 more
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Deflection of Sodium-Silicate Self-Hardening Mold at a High Temperature [PDF]
, 1977 In order to appreciate the movement of the mold wall by the pressure of the poured molten metal, the deflection test at a high temperature is usually adopted.Therefore in these experiments, the authors have investigated about the properties of the self ...
中田 登志夫, 養田 実
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Rare Metals, Volume 45, Issue 3, March 2026.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
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Jianzhu Gangjiegou Jinzhan, 2021 螺纹锚固单边螺栓是指通过带有螺纹的特殊螺栓孔代替螺母,从而实现单侧安装、拧紧功能的一种螺栓。目前关于该种螺栓连接T形节点在常温下不同破坏模式的受拉承载力计算方法已有研究。但在高温条件下节点变形增大,且高强螺栓与普通钢材在高温下的材性折减规律不一致,导致现有的常温计算公式不能直接用于火灾高温情况,目前仍缺少计算该类节点在高温下承载力的计算方法。根据常温下承载力计算公式,结合高温下节点出现大变形的特点,对现有的计算公式进行修正。并根据现有的试验结果对修正公式进行验证 ...
鲁永贵 +4 more
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Drawing up shear stress-strain graphs of Cr steel and high Mn steel in high temperature [PDF]
, 1957 The author previotlsly published the paper with respect to shear stress-strain graphs of mild steel. In this paper, graphs of Cr steel and high Mn steel in high temperature--300℃ 400℃, 5000℃ and 600℃--are treated.高温切削に於ける被削材の適性に関する問題を研究して行くには ...
高辻 雄三
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Rare Metals, Volume 45, Issue 3, March 2026.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
Jianzhu Gangjiegou Jinzhan, 2017 利用经试验验证的有限元模型对均匀温度和不均匀温度分布下轴向约束波纹腹板梁的悬链线效应进行了参数分析,选取荷载比、轴向约束刚度比、跨高比及倾角为主要参数,研究了钢梁的跨中挠度、梁端轴力和悬链线弯矩等随温度的变化规律,并给出了火灾下钢梁的临界温度。由于不均匀温度下产生的热弯曲,钢梁在压力阶段的挠度更大而轴力更小。但均匀温度下钢梁的破坏温度比不均匀温度情况时高。钢梁的悬链线温度和破坏温度都随着荷载比的增大而降低。相同荷载比作用下,不同跨高比钢梁的悬链线温度相同,但其破坏温度随跨高比的增大而升高 ...
陈恒超, 刘昌斌
doaj
Influence of Mold Resistance on the Casting Stress [PDF]
, 1974 Influence of mold is one of the vari ous important factors as the reason of the casting stress.For, the cooling ability, the strength, the expansion rate, and the deformation capacity of mold in hight emperature which have thermal influence when the melt
武部 克嗣, 養田 実
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