Results 11 to 20 of about 10,361 (165)

Emerging applications of large language models in ecology and conservation science

open access: yesConservation Biology, EarlyView.
Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides   +5 more
wiley   +1 more source

红外光谱快速测定油茶籽油脂肪酸组成的模型建立Establishment of rapid detection model of fatty acid composition of oil-tea camellia seed oil by infrared spectroscopy

open access: yesZhongguo youzhi, 2022
通过气相色谱和傅里叶红外光谱仪测定86个油茶籽油样本的脂肪酸组成和红外光谱图,采用支持向量机(SVM)和BP人工神经网络(ANN)的非线性建模方法,构建油茶籽油中主要脂肪酸的定量回归模型。结果表明:ANN建立的油酸和棕榈酸定量回归模型精确度比SVM高,校正集的相关系数(R)分别为0.998 7和0.945 1,预测集的相关系数分别为0.955 7和0.926 2,相对标准偏差分别小于1%和5%;SVM和ANN建立的亚油酸定量分析模型精确度都非常高,相对标准偏差均小于1 ...
吴雪辉1,2,何俊华1,王泽富1 WU Xuehui1,2, HE Junhua1, WANG Zefu1
doaj   +1 more source

Constructing Asymmetric Cu–OV–Mn Sites on MOFs‐Derived Cu‐MnOx Microspheres With Abundant Oxygen Vacancies for Enhanced Photothermal VOC Degradation

open access: yesRare 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

NK细胞及其受体表达与再生障碍性贫血的相关性研究

open access: yesZhongguo shiyan zhenduanxue, 2023
目的 研究再生障碍性贫血(AA)病人外周血NK细胞及其受体表达的变化,探讨NK细胞在AA发病机制中的作用。方法 利用流式细胞术检测28例AA病人(其中SAA 9例,NSAA 19例)外周血NK细胞功能,包括NK细胞数量,活化性受体NKG2D,抑制性受体NKG2A,穿孔素,颗粒酶β的表达,T淋巴细胞亚群及与造血指标的相关性分析,另有18例健康志愿者为对照组。结果 AA病人外周血NK细胞数,NKG2D,颗粒酶表达减少,与对照组比较差异有统计学意义 ...
孔令环   +6 more
doaj  

Biomass‐Engineered Defect‐Rich g‐C3N4 Anchors Pd2+‐Rich Ultrafine Particles for Highly Efficient Formic Acid Dehydrogenation

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei   +10 more
wiley   +1 more source

Use of species’ responses to cryptic anthropogenic disturbances for monitoring biodiversity outcomes in tropical forests

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero   +5 more
wiley   +1 more source

低丘侵蚀红壤垦种熟化过程中土壤磁性特征演变规律

open access: yesShuitu 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

基于红外相机技术对中华斑羚活动节律的研究

open access: yes野生动物学报, 2022
动物行为是动物对外界环境变化和内在生理活动改变所做出的整体性反应,动物行为节律研究是了解其活动特征时空变化及影响因素的重要内容。因此,于2017年3月—2018年12月采用红外相机监测技术,在药山国家级自然保护区布设了45台红外相机对中华斑羚(Naemorhedus griseus)的日活动节律进行研究。结果表明:中华斑羚的活动具有明显的晨昏性,活动模式呈经典的双峰型,上午的活动高峰出现在06:00—09:00,活动的最高峰出现在09:00,下午的活动高峰出现在16:00—20:00 ...
赵晨光 何明超 苏晋芬 罗蕊 高顺勇 陆元敏 李旭 段玉宝
doaj  

Sun Bear Ecology and Conservation: Multiscale Habitat Associations in Southeast Asia 马来熊的生态与保护:东南亚地区的多尺度生境关联研究

open access: yesIntegrative 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

北京松山国家级自然保护区林下鸟类和兽类多样性动态监测

open access: yes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  

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