Results 91 to 100 of about 36,990 (292)

Study of the changes in the microstructures and properties of grease using ball milling to simulate a bearing shear zone on grease

open access: yesScientific Reports
The effects of shear degradation on the microstructures and properties of grease were investigated using a planetary ball mill to simulate a bearing shear zone on grease.
Jia Ren   +4 more
doaj   +1 more source

Research on Key Technologies of Temperature Rise Suppression for Motor Grease Lubricated Rolling Bearing

open access: yes机车电传动, 2020
At present, grease lubrication is widely used in motor rolling bearings. However, the bearing DN value increases rapidly with the increasing of motor speed and power for the factor that the lubricating grease is semi-solid with poor flow and heat ...
Baoying SHE   +4 more
doaj  

Sliding Friction Characteristics of MAC Greases under Vacuum Condition

open access: yesTribology Online, 2006
Even though solid lubricants or low-volatile greases are used for lubrication of mechanical equipments in space satellites, the life of grease is longer than that of solid lubricants because of the hydrodynamic effects and replenishment. New grease using
Yasuo Yoshii, Hitoshi Hattori
doaj   +1 more source

An accessible microfluidic perfusion platform for time‐restricted control of zebrafish embryonic patterning

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Understanding the dynamic nature of developmental networks requires live imaging techniques capable of capturing real‐time developmental processes in wild‐type and mutant embryos as they are exposed to pharmacological perturbations. A peculiar developmental patterning process in early vertebrate embryos is the sequential segmentation of ...
Mohammed Nakhuda, M. Fethullah Simsek
wiley   +1 more source

Evaluation of Property Difference between Traction Oil and Traction Grease

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2009
In this paper, the characteristics of traction grease are evaluated. The difference in film formation ability between traction oil and traction grease is focused on, and the state of film formation and the traction coefficient of traction oil and two ...
Masashi YAMANAKA   +3 more
doaj   +1 more source

Greasing the Wheels of Entrepreneurship? The Impact of Regulations and Corruption on Firm Entry [PDF]

open access: yes
The paper investigates whether the impact of regulations on entrepreneurship depends on corruption. We first test whether regulations robustly deter firm entry into the markets.
Axel Dreher, Martin Gassebner
core  

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

open access: yesEnergy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang   +7 more
wiley   +1 more source

Teknologi pengambilan lemak dari sisa fleshing

open access: yesMajalah Kulit, Karet, dan Plastik, 2006
The aim of this research was to recover the fat from fleshing in order it could be useful for many kinds of industries such as soap, oil/grease for tanning manufactures, etc.
Sri Sutyasmi, Ignatius Sunaryo
doaj   +1 more source

The matrilineal Turn: Wiradjuri matrilineal leadership, colonial disruption, and the work of cultural return

open access: yesFeminist Anthropology, EarlyView.
Abstract This article advances three claims regarding the matrilineal organization of Wiradjuri society in central New South Wales. Drawing on the late nineteenth and early twentieth century ethnographic record, it demonstrates that Wiradjuri descent, totem, moiety identity, and ceremonial authority were and are matrilineally organized, despite ...
Jessa Rogers
wiley   +1 more source

Grease Film Behavior in Ball Bearings

open access: yesLubricants
To the film thicknesses of grease-lubricated ball bearings, the viscosity of the base oil is considered in the Elastohydrodynamic Lubrication (EHL) equations. For very low speeds, the grease film thickness is much larger than the calculated base oil film
Denis Cojocaru   +4 more
doaj   +1 more source

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