Results 11 to 20 of about 4,658 (160)
Detecting deterrence from patrol data
Conservation Biology, Volume 33, Issue 3, Page 665-675, June 2019., 2019 Abstract The threat posed to protected areas by the illegal killing of wildlife is countered principally by ranger patrols that aim to detect and deter potential offenders. Deterring poaching is a fundamental conservation objective, but its achievement is difficult to identify, especially when the prime source of information comes in the form of the ...
Andrew D. M. Dobson +4 more
wiley +1 more source
Study on Preparation and Application of Adhesive for Polyolefin Film [PDF]
, 2015 由于具有较高的机械强度、良好的化学稳定性、较好的电绝缘性、优良的加工性等优势，聚烯烃塑料广泛应用于社会生活中。在众多的聚烯烃塑料制品中，最为常见的产品是薄膜制品，包括聚乙烯薄膜、聚丙烯薄膜、多层共挤聚烯烃薄膜等。为了获得更优异的性能，实际应用中一般将聚烯烃薄膜与自身或者其他薄膜（如铝箔、聚酰胺薄膜、聚酯薄膜等）进行复合使用。目前，在复合过程中常用的聚烯烃薄膜粘结剂存在以下两个问题：1、环保问题：目前国内广泛使用的酯溶型聚氨酯粘结剂可能含有异氰酸酯单体的残留，而水性粘结剂由于干燥速度慢 ...
谢东权
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
Ultrathin palladium nanosheets assisted hydrogen reduction of graphene oxide [PDF]
, 2016 在过去的十年里，石墨烯作为一种由碳原子以sp2杂化轨道构成的单原子层材料，一直是研究的热点领域之一。因具有高比表面积、优异的导电导热性能、高透明度，以及高机械强度等特点，石墨烯在众多重要领域中，如电子器件、能源储存、生物医药、催化载体、光电元件、传感器件、环境保护等，都得到了广泛地应用。氧化还原法，作为石墨烯的经典制备方法之一，是将石墨氧化剥离得到氧化石墨烯，再进行化学还原或热还原得到石墨烯的一种方法。该方法因成本低廉、易于制备等特点，被视作大规模生产石墨烯的一种有效途径。然而在该方法中，氧化石墨烯 ...
董雅洁
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu +8 more
wiley +1 more source
Behavior of a Flexspline in Harmonic Drive [PDF]
, 1900 谐波齿轮传动是利用柔性工作构件的弹性变形波进行运动或者动力传递的一种新型传动方式，因其具有体积小、重量轻、精度高、单级传动比大、承载能力高等诸多优点，在航空航天、机器人、数控机床等领域得到了广泛的应用。柔轮作为谐波齿轮传动的关键构件很大程度上影响了谐波齿轮传动的承载能力、使用寿命等。柔轮为弹性薄壁件，在交变载荷作用下易导致齿面磨损和疲劳断裂。柔轮强度、变形与应力分析对谐波齿轮传动过程中的疲劳断裂评估及传动性能研究具有重要的意义。 本文首先根据已知参数、实际工况和谐波齿轮传动啮合参数选取原则 ...
刘淳剑
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source
Investigation and Development of the High-Efficiency Vertical Chip [PDF]
, 2015 GaN基LED一般生长在蓝宝石衬底上，由于蓝宝石是绝缘体和不良的导热物质，使得传统的正装芯片在大功率下工作时，容易因散热不佳导致失效。本论文利用外延转移技术把蓝宝石衬底更换成更好的导热导电衬底，制备成薄膜垂直芯片，以利于大电流，大功率下应用。 本论文所述芯片，使用ICPdamage作为电流阻挡层，使用基板键合技术将导电导热衬底和GaN结合，然后用激光剥离方式将蓝宝石衬底去除，为了增加出光效率，对GaN表面进行粗化。 我们发现PCB-ICP条件会导致垂直结构LED在老化过程发生漏电 ...
梁兴华
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Study on preparation, characterization and thermal conductivity of graphene [PDF]
, 2016 自从石墨烯被发现以来，其一系列优异的性质引起了研究人员广泛的关注。石墨烯的高导热性能可以应用在工业的各个方面。比如石墨烯材料有望在高性能电子器件、复合材料、场发射材料、气体传感器及能量存储等领域获得广泛应用[1]。石墨烯被视为一种很有前途的新型散热材料。目前已经有许多理论分析了石墨烯的导热性能。比如Fourier定律的数解，基于波尔兹曼Boltzmann传输方程和分子动力学Molecular—dynamics(MD)模拟的分析方法等。但是在实验方面 ...
张巍伟
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