Results 121 to 130 of about 431,737 (313)

Trace Element Contamination in Top Predatory Elasmobranchs From the Southern Black Sea: Implications for Ecosystem Health and Risk Assessment

Environmental Toxicology, EarlyView.
ABSTRACT Environmental pollution resulting from the rapid increase in human population, urbanization, intensive use of chemicals in agriculture, and industrial development has reached a level that threatens natural life today. Trace elements are one of the most important factors causing significant levels of pollution in the environment and are added ...
Levent Bat, Süleyman Özdemir, Zekiye Birinci Özdemir, Ayşah Öztekin   +3 more
wiley   +1 more source

The Use of Gas Dynamics to Estimate the Influence of Flanges on Gear Windage Power Loss

Dynamics
This study aims to develop a new model for windage losses, building upon existing formulation, complemented by dedicated experimental campaigns and a specific methodology designed to isolate and quantify windage losses.
Thibaut Torres, Yasser Diab, Christophe Changenet, Thomas Touret, Bérengère Guilbert   +4 more
doaj   +1 more source

Epiphora: A Structured Diagnostic Approach for the Otolaryngologist

World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Introduction Epiphora, or excessive tearing, has historically been predominantly managed by ophthalmologists. However, as there is substantial overlap between ophthalmic and otolaryngologic anatomy and pathology that may contribute to epiphora, patients with this symptom often present to otolaryngologists as well.
Luke M. O'Neil, Sam Kushner‐Lenhoff, Alexandra Van Brummen, Christopher Chambers, Hector Perez, Ashton E. Lehmann, Matthew M. Zhang, Aria Jafari   +7 more
wiley   +1 more source

Research of the Geometric Characteristic of Undercutting and Limit Normal Point in Gear Geometry

Jixie chuandong, 2015
The undercutting phenomena and the limit normal point are two important concepts in gearing theory,design and manufacturing.Based on the different opinions about them in the current research of limit normal point and the geometry and movement ...
Chen Ningxin
doaj  

Den attendance by Arctic foxes experiencing 10 years of increasing tourism

Wildlife Biology, EarlyView.
Wildlife tourism is a growing industry, and an increasing number of people seek to observe and interact with wild animals in their natural surroundings. In Iceland, the native Arctic fox Vulpes lagopus is widespread and has been under heavy hunting pressure for centuries.
Ester Rut Unnsteinsdóttir, Borgný Katrínardóttir, Bruce J. McAdam   +2 more
wiley   +1 more source

When is the bait worth the risk? A mechanistic model of a compensatory ecological trap in seabirds

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological traps occur when organisms preferentially select habitats that reduce fitness. In seabird–fishery systems, fishery‐derived trophic subsidies can increase foraging success, reinforce habitat preference and indirectly enhance reproductive output or recruitment,
Cristóbal Anguita, Alejandro Simeone, Cristián F. Estades   +2 more
wiley   +1 more source

Method of calculation and test of dynamic tooth root strain for high-contact-ratio spur gears

Jixie chuandong
ObjectiveAiming at the difference of load sharing and dynamic characteristics between high-contact-ratio spur gears and conventional spur gears, a method for calculating the dynamic tooth root strain was proposed considering the dynamic characteristics ...
YU Pengfei, ZHANG Xiangfeng, ZHOU Jianxing, WANG Haiwei, LIU Yi   +4 more
doaj  

DEFORMATION AND STIFFNESS OF SPUR GEAR TEETH AND THEIR INFLUENCE ON GEAR NOISE

Scientific Journal of Silesian University of Technology. Series Transport, 2015
Gear teeth are deformed due to the load. The deformation of gear teeth is causing some negative as well as positive effects. A tooth has a complex shape and due to the complex shape of the teeth, a theoretical determination of the deformation is difficult.
openaire   +2 more sources

Computer aided analysis of involute spur gears with asymmetric teeth

, 2005
In this study, involute spur gears with asymmetric teeth are investigated. The asymmetry means that pressure angles are different for the drive and coast sides.
Karpat, Fatih, Çavdar, Kadir, Babalık, Fatih C.   +2 more
core  

Alternative Contract Design: Analysing the Bankability of Fungible Derivative Contracts in Energy‐Only Markets

Australian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT With the retirement of 21GW of legacy coal fleet looming, the task to replace Australia's thermal capacity with alternative firmed renewable ‘bulk energy’ solutions is non‐trivial. Indeed, calibrating necessary capital investment in new plant stock with efficient economic outcomes, vis‐à‐vis cost and reliability, represents a fundamental ...
Nicholas Gohdes, Tim Nelson, Phillip Hirschhorn   +2 more
wiley   +1 more source