Results 11 to 20 of about 1,228,124 (150)
, 2017 本发明涉及航天器地面热试验领域，公开了一种航天器热真空试验温度控制方法及系统。该方法包括步骤：使用两个测量区域不同的测温仪同时对准热源加热中心位置，测得两个不同的平均温度T1、T2；根据平均温度T1，得到平均温度T1与目标温度的差值作为增量式PID控制器的输入量进行PID控制；将两个平均温度的比值T1/T2作为额外的反馈量与PID控制结果线性叠加得到热源功率的变化值；根据所述变化值调整热试验热源的输出功率。本发明可以保证航天器热真空试验温度稳定且超调量可控 ...
甘政涛 +5 more
core +2 more sources
, 2013 本发明公开了一种具有消波结构的激波风洞真空罐装置，该装置包括：水平主真空罐和竖真空罐，水平主真空罐的一端与激波风洞实验段连通，另一端与竖真空罐相连通；在所述竖真空罐上还连通设置有一个以上的水平副真空罐，所述水平副真空罐的另一端封闭。本发明通过在水平主真空罐的一端连通设置竖真空罐，并在竖真空罐上连通设置1个以上的水平副真空罐，真空罐内部空间形成连通的空间并具有复杂的空间结构 ...
姜宗林, 刘云峰, 赵伟, 俞鸿儒
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Research on English‐Medium‐Instruction (EMI) highlights inadequate support for students transitioning from L1‐medium‐instruction to EMI. To date, little research has focused on how L2 students’ adaptation to an EMI environment influences their L2 learning motivation (LLM).
Kevin W. H. Tai
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Studies on classroom interactions suggest that displaying affiliation through linguistic and multimodal resources could promote positive emotions like enjoyment, thereby enhancing engagement and enthusiasm in second/foreign language learning.
Karen C. K. Choi, Kevin W. H. Tai
wiley +1 more source
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT This study explores how 2SLGBTQ+ youth in Alberta, Canada—the country's most Conservative province—mobilize queer joy as a form of resistance amid rising anti‐queer and anti‐trans policies under a settler colonial, cisheteropatriarchal regime. Drawing from youth‐produced collages, we demonstrate that this visual arts‐based participatory method
JJ Wright, Gillian Robinson
wiley +1 more source
Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca +23 more
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT Disruptive innovations often diffuse faster than inherited policy institutions can classify, assign jurisdiction, and govern them. In these early phases, the central struggle is often not yet about the stringency of substantive standards, but about prior questions of what the innovation is (its legal and administrative classification), who is ...
Sina Jangjoo
wiley +1 more source
, 2008 本发明公开了一种快速提高真空室真空度的方法，在真空室内，使金属材料蒸发形成蒸气粒子，并将该金属蒸气粒子沉积于金属板表面形成新鲜金属膜，利用金属蒸气粒子及其形成的新鲜金属膜快速吸附真空室内的气体分子，并进一步生成稳定的固态物质。本发明一种快速提高真空室真空度的方法，在真空室内，采用蒸发方式，使少量活性高且稳定性好的金属材料蒸发为蒸气粒子，蒸气粒子迅速与真空室内的水蒸气、氧气、氢气等气体发生反应，生成稳定的固态物质，从而达到快速提高真空室的真空度的目的。采用本方法提高真空室的真空度 ...
樊菁, 舒勇华, 李帅辉
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable Zn‐based alloys are promising candidates for temporary implants, yet excessive Zn2+ release during degradation may induce cytotoxicity and adverse tissue responses. In this study, Zn‐xBa alloys (x = 0.1 wt%, 0.5 wt%, 1.0 wt% and 3.0 wt%) were developed to achieve controlled corrosion behaviors with improved biocompatibility.
Liu‐Dang Fang +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT High‐entropy oxides (HEOs) are promising for microwave absorption but suffer from a trade‐off between impedance matching and attenuation, often requiring high filling ratios (> 50 wt%). Herein, we propose a “lattice‐spin” dual‐regulation strategy by introducing giant‐radius Bi into a single‐phase HEO solid solution.
Junwei Zhang +11 more
wiley +1 more source