Results 81 to 90 of about 4,945 (221)
Assessing the accuracy of field‐based versus laboratory methods for determining the age of roe deer
Wildlife Biology, EarlyView.Accurate age determination in roe deer Capreolus capreolus is essential for selective harvesting and informed population management, yet field‐based methods widely used by hunters remain imprecise. This study compared field‐based and laboratory age determination methods in 204 harvested roe deer, categorized by sex and habitat type (forest versus open ...
Michael Manton +4 more
wiley +1 more source
Cycloid Gear Profile Modification based on Elliptical Method
Jixie chuandong, 2019 In order to get a more ideal cycloidal profile,a new cycloid profile modification method is proposed. Under the circumstance of keeping the short coefficient and the eccentricity constant,the contour line of the modified tooth profile is obtained by the ...
Chen Zhilong +4 more
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Localized resources enable noninvasive genetic monitoring of small populations of mountain ungulates
Wildlife Society Bulletin, EarlyView.Using microsatellite analysis of fecal samples collected at mineral licks from 2019–2022, we assessed abundance, apparent survival and genetics of bighorn sheep in the Teton Range, Wyoming, USA. Annual abundance estimates ranged from 118−132 individuals split into 2 similar‐sized demes and apparent survival estimates ranged from 0.72–0.92.
Carson J. Butler +4 more
wiley +1 more source
Analysis of Influence of Tool Installation Error on the Tooth Profile Surface of Face Gear
Jixie chuandong, 2019 In order to analyze the influence of the tool installation error on the tooth profile surface of the face gear,the meshing coordinate system of the face gear machining with the tool installation error is established. The tooth profile surface equation of
Li Xiaozhen +2 more
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Journal of the Royal Anthropological Institute, EarlyView.Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton +3 more
wiley +1 more source
Research of the Three-dimensional Model of Point-line Meshing Gear based on SolidWorks
Jixie chuandong, 2017 Based on the type of DZLY180 gear reducer,aiming at the particularity of the tooth profile of point- line meshing gear,the curve equation of the tooth profile of point- line meshing gear is applied to calculate some coordinates on the tooth profile curve
Yang Fan, Luo Qihan, Huang Hai, Teng Fei
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Journal of the Royal Anthropological Institute, EarlyView.Our current understanding of the origins of Homo sapiens is limited, in part, by the fragmented fossil record from Late Pleistocene and early Holocene Africa. Here, we re‐examine the Kabua 1 cranium, an enigmatic and little‐studied Kenyan fossil discovered in the 1950s. We compare virtual reconstructions created previously by our team with a wide range
Abel Marinus Bosman +7 more
wiley +1 more source
Distributed acoustic sensing for marine mammal monitoring
Methods in Ecology and Evolution, EarlyView.Abstract Marine mammal monitoring provides critical data to inform species management and sustainable industrial development. Passive acoustic monitoring, in particular, can provide continuous, long‐term and non‐observer‐biased data, with a subset of systems capable of delivering data in near‐real time.
Léa Bouffaut
wiley +1 more source
Study on the Design and Modification Method of the Cycloid Gear Tooth Profile
Jixie chuandong, 2019 A new tooth profile curve equation of the cycloid gear is proposed based on the gear meshing transmission principle. Due to the problem that complex cycloid equation is difficult to be substituted directly with the software for modeling, the method of ...
Wei Bangjie, Liu Tao, Li Ruqiong
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