Results 21 to 30 of about 929,539 (310)

First confirmed records of white-coat pups of the Endangered Caspian seal Pusa caspica on the coast of Iran

Oryx
The endemic Caspian seal Pusa caspica breeds on land-fast ice or stable drift ice in the northern Caspian Sea. Breeding has rarely been reported in the ice-free south-eastern Caspian Sea.
Amir S. Shirazi, Ali T. Qashqaei, Samaneh Faezi, Seyedreza Khaleghi, Nikta Moghaddamipour, Tara Ebrahimi, Shadi Karbalaei Hassan, B. Louise Chilvers   +7 more
doaj   +1 more source

In-situ formation of nitrogen doped microporous carbon nanospheres derived from polystyrene as lubricant additives for anti-wear and friction reduction

Friction, 2023
This study presents a nitrogen-doped microporous carbon nanospheres (N@MCNs) prepared by a facile polymerization–carbonization process using low-cost styrene.
Yixin Wang, Qi Lu, Huijie Xie, Shujuan Liu, Qian Ye, Feng Zhou, Weimin Liu   +6 more
doaj   +1 more source

High-Throughput Calculation of Interlayer van der Waals Forces Validated with Experimental Measurements

Research, 2022
Interlayer van der Waals interactions play an important role in two-dimensional (2D) materials on various occasions. The interlayer binding force is often directly measured and is considered more closely related to the exfoliation condition.
Kewei Tang, Weihong Qi, Yaru Wei, Guoliang Ru, Weimin Liu   +4 more
doaj   +1 more source

Influence of Concentration of Sodium Metasilicate and Descaling on the High Temperature Lubricating Effects Evaluated by Hot Rolling Mill

Lubricants, 2023
Lubricant is vital to improve energy efficiency and workpiece durability for the moving counterpart. High-temperature lubricants are important for the hot rolling process to reduce the rolling force and protect the roller and the strips.
Hongliang Liu, Xun Wu, Jiaxuan Huang, Xibo Shao, Pei Wang, Guanyu Deng, Long Wang   +6 more
doaj   +1 more source

Mitigating the Effects of Maternal Loss on Harbour Seal Pups in Captive Care

Animals
Stranded newborn “orphan” harbour seal pups entering captive care are often maintained for some weeks in isolation, mainly as a precaution against the spread of infection. However, this practice raises concerns for the welfare and normal socialisation of
Susan C. Wilson, Rhiannon Alger
doaj   +1 more source

Impact of Lubricating Oil Leakage Characteristics of a Bearing Cavity Sealing System Based on an Oil–Gas Two-Phase Flow

Lubricants
In this paper, we aim to study the oil–gas two-phase flow characteristics, leakage characteristics, and critical oil sealing characteristics of the bearing cavity sealing system of aero-engine bearings.
Guozhe Ren, Rui Wang, Dan Sun, Wenfeng Xu, Yu Li   +4 more
doaj   +1 more source

Shaft seal assembly for high speed and high pressure applications [PDF]

, 1979
A seal assembly is provided for reducing the escape of fluids from between a housing and a shaft rotably mounted in the housing. The seal assembly comprises a pair of seal rings resiliently connected to each other and disposed in side-by-side ...
Hadt, W. F., Ludwig, L. P.
core   +1 more source

Thrombolytic proteins profiling: High‐throughput activity, selectivity, and resistance assays

FEBS Open Bio, EarlyView.
We present optimized biochemical protocols for evaluating thrombolytic proteins, enabling rapid and robust screening of enzymatic activity, inhibition resistance, and fibrin affinity, stimulation, and selectivity. The outcome translates to key clinical indicators such as biological half‐life and bleeding risk. These assays streamline the development of
Martin Toul, Alan Strunga, Jiri Damborsky, Zbynek Prokop   +3 more
wiley   +1 more source

Miscible chemical ordering in Ti-Cr-Mo quinary system by solid solution of Mo2Ti2AlC3 and Cr2.5Ti1.5AlC3 o-MAXs

Nature Communications
Out-of-plane ordering is promising for separately adjusting the heterodesmic chemical bonding inside the MAX phase thus tuning their properties, while constructing the out-of-plane ordered-MAX (o-MAX) is still a challenge.
Cheng-Feng Du, Chuanchao Wang, Mengfei Xu, Yaqing Xue, Lili Xue, Conghui Meng, Long Wang, Weihong Qi, Xuqing Liu, Hong Yu   +9 more
doaj   +1 more source

Transformation of chemical ordering and configuration entropy in quaternary CrxTi0.75Mo0.75V1.5−xAlC2 MAX system

Journal of Advanced Ceramics
Two new quaternary CrxTi0.75Mo0.75V1.5−xAlC2 (x = 1.25 and 1) MAXs and Cr0.75Ti0.75Mo0.75V0.75AlC2 are synthesized via hot pressing. An unprecedented transition in M-site atomic occupancy from out-of-plane order to solid solution is observed along with ...
Yaqing Xue, Hong Yu, Hongwei Liang, Xiaomei Wang, Lili Xue, Shiyao Lei, Conghui Meng, Long Wang, Cheng-Feng Du   +8 more
doaj   +1 more source