Results 31 to 40 of about 489,650 (137)
Dizhen xuebao, 2022 利用传统三极接地电阻率测量方法对井下电极接地电阻进行测量会存在较大的测量误差，表明该方法已不适用于井下电极接地电阻测量。针对此问题，提出了利用台站现有地电阻率仪器进行电极接地电阻测量的新方法—直接测量法，并使用传统三极法和直接测量法对北京平谷地震台井下观测供电电极接地电阻进行了测量。测量结果表明：与传统三极法对比，直接测量法的测量结果更为准确、可靠，而且节省人力、物力和时间。
Yu Zhang, Lanwei Wang, Zhe Hu
doaj +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin +7 more
wiley +1 more source
Wildlife Letters, EarlyView.In the winter of 2021/2022, a winter track survey revealed 43–46 tigers (without cubs) in 5.4 thousand km2 of suitable habitats in the Southwest Primorsky Province of Russia. In the same period, a network of camera traps registered 54 adult/subadult tigers here.
Yury Darman, Dina Matiukhina
wiley +1 more source
Wildlife Letters, EarlyView.Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu +5 more
wiley +1 more source
Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Fushe yanjiu yu fushe gongyi xuebao为快速筛查对象水体中14C的存在与否，并提供定量测量结果，采用液闪计数区域优化的方法，结合内标法确定猝灭效应下的计数效率，实现了样品中14C活度浓度的快速准确分析，探测下限为1.8 Bq/L。应用于某核药厂衰变池及周边环境水样中14C活度浓度的分析，其中3个样品活度浓度低于探测下限，其余样品活度浓度分布在38~1 332 Bq/L。自制活度浓度已知的样品验证了该方法的准确性，测量结果相对参考值最大偏差仅1.1%。
戈 立新, 韩 刚, 赵 超
doaj +1 more source
Wildlife Letters, EarlyView.Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller +5 more
wiley +1 more source
, 2013 一种地表裂缝的三维测量装置主要包括：测量机构和安装机构，所述测量机构设置在安装机构上；测量机构主要包括测量桶、顶盖、重锤，转动轴承、定滑轮及其支架、测量游标尺、指北针、下挫角度测量尺和铟钢丝绳；测量桶筒壁设置有游标尺，测量桶内设置有重锤，游标尺指针设置在重锤上并由测量桶壁上的通孔伸出，测量桶顶部设置有旋转轴承，定滑轮及其支架和顶盖可在旋转轴承的作用下相对于测量桶旋转，指北针固定设置在顶盖顶部；顶盖侧壁上设置有出丝孔，出丝孔处设置有下挫角度测量尺；铟钢丝绳一端固定设置在重锤上 ...
李世海 +3 more
core +1 more source
Wildlife Letters, EarlyView.By comparing widespread surveys with randomly placed cameras to a protocol pairing detection dogs with cameras, we found that the detection‐dog‐guided camera survey had approximately 33 times greater detections with fewer camera nights and reduced survey costs. We recommend using detection dogs to identify areas to focus camera trapping. ABSTRACT Multi‐
Jenna B. Myers +5 more
wiley +1 more source
Wildlife Letters, EarlyView.FoxWatch is a user‐friendly analytical workflow that converts camera‐trap detections into dependable estimates of fox abundance. The user‐friendly Shiny R app standardizes data preparation, employs Simultaneous‐Count Models modeling, and displays uncertainty in clear, comprehensible outputs. By connecting field monitoring with decision‐making, FoxWatch
Duminda S. B. Dissanayake +1 more
wiley +1 more source