Results 21 to 30 of about 343,001 (158)

The Two Faces of Introgression in Conservation Biology 基因渗入在保育生物学中的双重面貌

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 339-344, September 2025.
Conservation biologist need to take into account the various aspects of introgression in their attempts to protect the species integrity and evolutionary potential of threatened species. To do so, they have to overcome the bias created by the Mayrian species concept that considers species as having distinct gene pools.
Harald Schneider, Charles H. Cannon
wiley   +1 more source

A novel approach for feline sporotrichosis pathogen detection based on loop‐mediated isothermal amplification

open access: yesVeterinary Dermatology, Volume 36, Issue 4, Page 474-484, August 2025.
Background – Sporotrichosis is a chronic, mycotic infection caused by fungi of the genus Sporothrix. Zoonotic sporotrichosis occurs mainly through S. brasiliensis transmission, resulting from the organism's traumatic introduction via scratches or bites, or contact with exudate from contaminated cats.
Steffanie Amadei   +6 more
wiley   +1 more source

晋西黄土区不同密度刺槐林土壤入渗特征及其影响因素

open access: yesShuitu Baochi Xuebao, 2020
为研究林分密度对土壤入渗性能的影响,以晋西黄土区5种密度(1 075,1 300,1 575,1 800,2 150株/hm2)刺槐(Robinia pseudoacacia Linn.)林为研究对象,采用双环入渗法测定其土壤入渗过程,并对入渗特征指标与土壤理化性质的相关性进行分析。结果表明:(1)不同密度刺槐林土壤入渗过程的变化规律一致,均经过瞬间入渗(0~5 min)、缓慢入渗(5~40 min)和稳定入渗(40 min后)阶段。(2)土壤初始入渗速率、稳定入渗速率 ...
王珊珊   +5 more
doaj  

Simulating the efficacy of wolf–dog hybridization management with individual‐based modeling

open access: yesConservation Biology, Volume 39, Issue 1, February 2025.
In the photo, an introgressed adult wolf–dog in the Northern Apennines, Italy, not far from the city of Bologna. Part of a research program, this male has been sterilized and released back in its own pack with a Global Positioning Collar. Abstract Introgressive hybridization between wolves and dogs is a conservation concern due to its potentially ...
Nina Luisa Santostasi   +4 more
wiley   +1 more source

Localization of the counterinsurgency in Sinai: A case study on integrating local population into counterinsurgency combat operations in Sinai

open access: yesDigest of Middle East Studies, Volume 33, Issue 2, Page 108-124, Spring 2024.
Abstract Integrating local militias in the counterinsurgency (COIN) operations in Sinai has achieved tangible successes. The presence of local fighters contributed to the penetration of the Islamic State—Sinai Province network. The integration of locals into the ongoing COIN process has imposed a degree of local participation in local governance and ...
Mohamed Saad
wiley   +1 more source

工程堆积体入渗特征及入渗模型适宜性评价

open access: yesShuitu Baochi Xuebao, 2018
以重庆市城镇建设和交通枢纽工程形成的典型工程堆积体为研究对象,采用野外双环入渗法对工程堆积体入渗特征、影响因素及入渗模型适宜性进行研究,筛选重庆市典型工程堆积体最优入渗模型。结果表明:(1)工程堆积体初始入渗率可达23.20 mm/min,随着入渗时间的延长,入渗速率逐渐降低,30 min瞬时入渗率为2.38~11.32 mm/min,稳定入渗率为1.81~9.05 mm/min;(2)工程堆积体的初始入渗率、稳定入渗率、平均入渗率、30 min入渗率、60 min入渗率和渗透总量均表现为中等变异 ...
李叶鑫   +4 more
doaj  

祁连山区不同尺寸双环入渗仪对比试验

open access: yesShuitu Baochi Xuebao, 2017
双环入渗仪是田间测量土壤入渗过程和饱和导水率最常用的经典方法,但入渗仪内外环尺寸均会影响其测定结果。设计7组不同内外径的双环入渗仪,在位于祁连山区的黑河上游平坦草地开展多次野外土壤入渗试验,对比分析双环入渗仪内外环尺寸对土壤入渗率和饱和导水率的影响。结果表明,双环入渗仪内径相同时,外径越大则稳定入渗率和饱和导水率越小;外径相同时,内径越小则稳定入渗率和饱和导水率越小。初始入渗率与双环入渗仪尺寸关系不显著,但稳定入渗率和饱和导水率与入渗仪缓冲指数呈显著负相关。综合考虑安装简便,用水条件 ...
  +5 more
doaj  

石漠化区退耕驱动下露石岩-土界面土壤渗透特性变化

open access: yesShuitu Baochi Xuebao, 2022
为揭示退耕对石漠化区露石岩—土界面土壤渗透特性的影响,以典型石漠化坡耕地为对照,选择休闲地、退耕灌草和果园为研究对象,采用环刀法研究了平直、外凸和内凹型露石岩—土界面土壤渗透特性。结果表明:(1)不同退耕类型岩—土界面土壤入渗过程及特征差异较大,从初始入渗率到稳定入渗率衰减幅度在0.350~55.756 mm/min,而不同岩—土界面形状间土壤入渗速率差异较大;(2)不同退耕类型岩—土界面土壤入渗速率的主要影响因素为毛管孔隙度和非毛管孔隙度,初始入渗率、平均入渗率和稳定入渗率均与毛管孔隙度呈极显著负相关(
刘婷婷   +4 more
doaj  

紫色土坡耕地土质埂坎分层入渗试验研究

open access: yesShuitu Baochi Xuebao, 2017
以相邻田面为对照,利用双环入渗法对三峡库区紫色土坡耕地土质埂坎分层(地埂、坎腰和坎趾)的入渗特征进行研究。结果表明:(1)土质埂坎分层入渗与对照田面入渗均呈先陡降后趋于稳定的趋势,但达到稳定入渗的时间存在差异。地埂达到稳定入渗的时间最长(110 min),分别比坎腰、坎趾和田面达稳定入渗的时间长9%,82%,18%。从入渗性能看,土质埂坎各层均表现出初始入渗率>平均入渗率>稳定入渗率。平均入渗率与120 min累积入渗量表现为地埂>坎腰>田面>坎趾,初始入渗率为坎腰>地埂>田面>坎趾,稳定入渗率为田面 ...
黎娟娟, 李进林
doaj  

不同入渗水头条件下壤砂土的一维垂直入渗特性/One-dimensional vertical infiltration characteristics of loamy sand at different infiltration heads[J]

open access: yes, 2014
通过室内垂直入渗试验,分析了入渗水头对新疆喀什市塔什库尔干县壤砂土一维垂直水分入渗特性的影响.结果表明:累计入渗量与时间的关系符合Kostiakov-Lewis模型和Philip模型,其模型参数A值和吸渗率S随入渗水头的增大而增大,呈良好的线性关系,入渗系数与入渗指数随入渗水头增加呈相反的变化趋势;湿润锋推进距离与时间呈幂函数关系,参数m值随着入渗水头增加而增大,参数n在数值上等于第10个单位时间末和第1个单位时间末湿润锋推进距离比值的常用对数;累计入渗量与湿润锋呈线性关系 ...
HU Shun-jun   +12 more
core  

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