Results 11 to 20 of about 785,191 (159)
野生动物学报中华穿山甲（Manis pentadactyla）夜行穴居，体表覆盖鳞片，个体外观特征差异较小，基于红外相机影像拍摄到的体貌特征进行个体识别较难，因此探讨一种基于红外相机影像与比例尺估测体长进行中华穿山甲个体识别的方法。在笼舍内布设不同高度的红外相机并拍摄中华穿山甲影像，利用ImageJ软件计算中华穿山甲在红外相机影像中的体长测量值，并计算在不同高度条件下红外相机拍摄的中华穿山甲体长误差值。结果表明：红外相机最佳的布设高度为0.8 m，相对误差为2.76%。基于上述结果 ...
张奕航 +6 more
doaj +2 more sources
野生动物学报, 2014 近年来,红外触发相机凭借各种优势,在野生动物种类与数量调查中得到越来越多的应用。2012年6月～2013年3月,在安西极旱荒漠国家级自然保护区山区的水源及兽径处放置20部红外触发相机,以检验该技术在山区动物种类调查中的应用效果。监测期间共获得独立照片732张,经辨认,共拍摄到25种野生动物,隶属2纲,10目,15科,25属。哺乳类拍摄率最高的3种是北山羊(Capra ibex)、岩羊(Pseudois nayaur)及中亚兔(Lepus capensis); 鸟类拍摄率最高的3种为红嘴山鸦 ...
王 亮 赵 伟 杨增武 陶金鼎 包新康
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The intricate corrosion environment necessitates the polymeric coating's adaptability to the surroundings. In this work, the integration of rare‐earth Ce(III) ions and ethylene diamine tetramethylene phosphonic acid (EDTMP) in a layered double hydroxide (LDH) material is developed to enhance the corrosion protection and anti‐wear properties of
Yangu Liu +9 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Early diagnosis of liver cancer demands high sensitivity, high specificity, convenience and real‐time monitoring capabilities. However, it encounters challenges such as low concentration of markers, numerous interfering factors, and limitations of detection technologies.
Changsheng Shi +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 2001 应用磁测方法并结合土壤理化指标 ,对相同母质发育但利用方式和熟化程度不同的浙西红壤磁性特征进行研究。结果表明 ,6种利用方式的红壤中 ,耕植年限长、熟化程度高的红壤由于土壤结构、p H值和有机质含量的改善 ,磁性特征有明显变化 ,磁性矿物由亚铁磁性矿物向不完整反铁磁性矿物方向发展 ,且超顺磁性矿物和单畴磁性矿物含量减少。此外 ,耕植年限相同的红壤磁性相近 ,裸地红壤的磁性低值反映了裸地表土强烈侵蚀状况。
韩晓非 柳云龙 等
doaj +2 more sources
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT With the growing severity of volatile organic compounds (VOCs) pollution, metal‐organic frameworks (MOFs)‐derived materials offer a promising solution through efficient photothermal catalysis. In this paper, M‐MnOx (M = Cu, Ni, Co, Fe) catalysts derived from manganese‐based MOFs were successfully prepared by the sacrificial template method and
Yizhong Liao +10 more
wiley +1 more source
Dimensional Assembly Engineering of Ce‐MOF Interfaces for Selective Recognition of Phytic Acid
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Selective molecular recognition is central to chemical sensing yet discriminating structurally similar molecules at complex interfaces remains challenging. Traditional strategies based on tuning size, charge, or binding‐site chemistry often suffer from limited flexibility.
Qiang Miao +7 more
wiley +1 more source
, 2014 本发明涉及一种基于双相机系统的无棱镜位相差异波前传感系统，该系统包括波前编码镜头、分光元件、正焦影像焦面CCD相机、离焦影像焦面CCD相机以及用 于获取波前泽尼克系数的数字处理单元；波前编码镜头与分光元件设置在同一光路上；分光元件将入射至分光元件的光分为反射光以及透射光；正焦影像焦面CCD 相机设置在透射光所在的光路上；离焦影像焦面CCD相机设置在反射光所在的光路上；正焦影像焦面CCD相机和离焦影像焦面CCD相机分别与数字处理单元相 连。本发明提供了一种能够极大地提升PD技术的性能 ...
樊学武, 赵惠, 易红伟
core +1 more source
野生动物学报, 2017 明确生物多样性动态和变化趋势是制定有效保护措施的基本出发点,2013年3月～2014年2月,在北京松山国家级自然保护区布设 64台红外相机,对林下鸟类和大中型兽类多样性进行连续监测,并与以往研究进行对比。本次调查累积相机日14 930 d,获得独立有效照片3 293组,有效视频3 746 s。记录到鸟类7目17科47种,兽类5目10科14种,含5种国家Ⅱ级重点保护野生动物。较以往红外相机监测新发现鸟类21种分属12科,新增6科; 新增兽类2种分属2科。不同海拔、植被类型以及功能区的相对丰富度存在一定差异,
张源笙 蒋万杰 蒋 健 王 丹 吴记贵 刘芳茗 鲍伟东
doaj