Results 101 to 110 of about 33,483 (309)

Some aspects of the ecology of the leatherback turtle Dermochelys coriacea at Laguna Jalova, Costa Rica [PDF]

open access: yes, 1987
The ecology and reproductive biology of the leatherback turtle (Dennochelys coriacea) was studied on a high-energy nesting beach near Laguna Jalova, Costa Rica, between 28 March and 8 June 1985.
Hirth, Harold F., Ogren, Larry H.
core  

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

open access: yesAdvanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee   +7 more
wiley   +1 more source

湿式双离合器起步控制仿真分析

open access: yesJixie chuandong, 2014
Based on the wet dual-clutch automatic transmission structural characteristics,the control strategy of two clutches joint participation starting is established to minimize the friction power meanwhile under the constraints of compelled requirements,and ...
杨光春
doaj  

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Numerical analysis of dynamic characteristics of wet friction temperature fields

open access: yesAdvances in Mechanical Engineering, 2017
The wet clutch sliding friction process for a wet friction pair is simulated using the finite element method. Results allow examination of temperature fields and thermal deformation problems.
Le Li, Hao Li, Liyong Wang
doaj   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

A Study on Power Transmission Control for Applying MR Fluid Multi-Plate Clutch to Automobile Power Distribution Device

open access: yesApplied Sciences
The aim of this study is to design and manufacture a multi-plate clutch system that uses magnetorheological (MR) fluid control to allow for a variable power transmission ratio in power distribution systems.
Jin-Young Park   +2 more
doaj   +1 more source

GATORNOMICS: PROFITABLE AND SUSTAINABLE USE OF ALLIGATORS IN THE SOUTHEASTERN UNITED STATES [PDF]

open access: yes
The American alligator is no longer an endangered species. Alligator farms and ranches are regulated by government agencies, which provide economic incentives to ensure sustainable use.
Frechette, Darren L., Heykoop, Jerry
core   +1 more source

Plasma sprayed titanium coatings with/without a shroud [PDF]

open access: yes, 2020
: Titanium coatings were deposited by plasma spraying with and without a shroud. The titanium coatings were then assessed by scanning electron microscopy.
Zhou, Hong
core  

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