Results 11 to 20 of about 14,191 (165)
Integrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2022 探讨黄土旱塬冬小麦区不同有机肥替代化肥氮对小麦产量及土壤碳氮组分的影响,为该区减施化学氮肥、促进小麦提质增效和农业绿色可持续发展提供理论依据。于2019年在山西黄土旱塬冬小麦种植区设置100%化肥N处理(HF)、10%腐殖酸N+90%化肥N (F1)、30%腐殖酸N+70%化肥N (F3)、50%腐殖酸N+50%化肥N (F5)、10%有机肥N+90%化肥N (Y1)、30%有机肥N+70%化肥N (Y3)、50%有机肥N+50%化肥N (Y5)7个试验处理,系统研究了不同比例腐殖酸 ...
姜丽伟 +6 more
doaj +2 more sources
Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
Research on Key Technology of Grinding for Screw Rotor Profile [PDF]
, 2015 双螺杆压缩机具有工作可靠、适应性强、易于操作维护和多相混输等优点，被广泛应用于汽车、压缩机、制冷机、矿山机械、动力机械等工业领域。双螺杆压缩机的核心部件是一对相互啮合的螺杆转子，螺杆转子加工质量是保证双螺杆压缩机性能及能效的关键，提高转子加工精度有利于降低其能耗，对节能减排具有非常重要的意义。随着现代机械设计制造技术的发展，出现了一批专用的数控螺杆转子加工设备及其配套软件，但其核心技术仍由国外掌握。我国在这一研究领域还处在刚起步阶段，与世界领先技术相比还有很大差距，且由于欧美等发达国家的技术封锁 ...
沈志煌
core
A Tale of Two Programs? Stigma and Administrative Burdens in CHIP and Medicaid
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT One contributing factor to undersubscriptions is administrative burdens. To explore whether program stigma affects attitudes about administrative burdens, a survey (N = 2204) was fielded to assess differences in attitudes about seven policies decreasing administrative burdens and two policies increasing administrative burdens.
Simon F. Haeder
wiley +1 more source
Underground personnel detection and tracking based on improved YOLOv5s and DeepSORT [PDF]
, 2023 The real-time monitoring and tracking system of mine moving targets is an essential part of the construction of smart mines. The appearance of downhole inspection robots can realize the real-time monitoring of operators, but the existence of uneven ...
Shibo LIU +5 more
core +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 通过研究不同有机物料添加对内蒙古河套灌区碱化土壤可溶性有机碳含量变化的影响，寻找合理高效的增碳方式，降低碱化土壤有机碳损失。以内蒙古河套灌区轻度、中度盐碱土为对象进行田间试验，设置生物炭（BC）添加、羊粪（GM）添加，对照（CK）3个处理，对比和分析不同有机物料添加后土壤有机碳（SOC）、可溶性有机碳（DOC）、土壤理化性质的变化。结果表明：（1）与CK相比，轻度碱化土壤BC、GM处理土壤DOC含量分别增加3.28%，20.66%，SOC含量增加5.40%，10.30 ...
陈晨 +6 more
doaj
Research and Application on Key Technologies of LED Lighting for Large Henhouse [PDF]
, 2016 摘要 人工照明技术可促进肉鸡生长以提高产量，使鸡舍照明技术在近年来发展迅速。具有环保、节能、高效和寿命长等优点的LED照明技术广泛应用于各个领域。本文基于某企业鸡舍照明设备改造项目，结合LED照明技术，为企业设计了一套稳定可靠的大型鸡舍LED照明系统。 本文介绍了鸡舍LED照明系统总体方案，阐述了系统布局及要求，利用距高比概念确定鸡舍光照分布和单盏灯光通量，确定照度控制方式，确立系统控制方法，确定各分区供电的开关电源设计标准。在总体方案基础上进行控制系统设计，为解决远距离信息传输设计通信信道 ...
王新峰
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou +8 more
wiley +1 more source