Results 91 to 100 of about 10,335 (185)

Effect of starvation on film thickness and traction under elastohydrodynamic rolling and sliding conditions [PDF]

open access: yes
Traction measurements under starved elastohydrodynamic conditions were obtained for a point-contact geometry. Simultaneous measurements of the film thickness and the location of the inlet lubricant boundary were made.
Wedeven, L. D.
core   +1 more source

Potentials for Generating Alternative Fuels from Empty Palm Fruit Bunches by Pyrolysis [PDF]

open access: yes, 2012
The threat that the disposal of empty palm fruit bunches constitute to communities in oil palm processing areas in Nigeria coupled with the current global focus on alternative energy is the trigger for this work.
Bamgboye, I.A.   +5 more
core  

Gas Production Profiling for Horizontal Wells Using DAS and DTS Data

open access: yesFuels
Production profiling is essential for optimizing production strategies in oil and gas wells. Conventional production logging tools provide only discrete, time-limited measurements and face operational challenges in long or complex horizontal wells ...
Wenqiang Liu   +5 more
doaj   +1 more source

EHD analysis of and experiments on pumping Leningrader seals [PDF]

open access: yes
Analysis and design charts have been generated to provide design data for Pumping Leningrader Reciprocating Rod Seals. The analytical treatment divides the seal into three regions: an inlet zone, induced with the use of an expansion ring, a contact zone,
Eusepi, M. W., Walowit, J. A.
core   +1 more source

Wild Organics: A Frontier Shift from Agriculture to Wildculture [PDF]

open access: yes, 2008
There is currently a twenty-first century “backflow” of the “organic” concept, from its agricultural heritage to wildculture. Wildculture includes all aspects and styles of hunting-and-gathering food harvesting.
Paull, John
core  

Active colloids in liquid crystals

open access: yes, 2015
Active colloids in liquid crystals (ACLCs) is an active matter with qualitatively new facets of behavior as compared to active matter that becomes isotropic when relaxed into an equilibrium state.
Lavrentovich, Oleg D.
core   +1 more source

Analysis on Structural Strength and Open/Close Characteristic of CD70 High-pressure Cock Valve

open access: yesShiyou jixie, 2021
The high-pressure cock valve is an indispensable and important component connecting the high-pressure manifold during cementing and fracturing operations in oil fields.
Li Jingcui   +6 more
doaj  

Characteristics of stratified flows of Newtonian/non-Newtonian shear-thinning fluids

open access: yes, 2017
Exact solutions for laminar stratified flows of Newtonian/non-Newtonian shear-thinning fluids in horizontal and inclined channels are presented. An iterative algorithm is proposed to compute the laminar solution for the general case of a Carreau non ...
Brauner, Neima   +3 more
core   +1 more source

Efficient placement technology of proppants based on structural stabilizers

open access: yesPetroleum Exploration and Development
Fiber is highly escapable in conventional slickwater, making it difficult to form fiber-proppant agglomerate with proppant and exhibit limited effectiveness. To solve these problems, a novel structure stabilizer (SS) is developed.
Jianchun GUO   +5 more
doaj   +1 more source

Research and application of a novel flocculant combination in the treatment of fracturing flowback fluid

open access: yesGongye shui chuli
A novel flocculant combination was developed for the treatment of fracturing flowback fluid of Linxing coalbed methane field, with polysilicic acid polymerized iron sulfate as the coagulant and acrylamide and acrylic acid-1,2-ethylenetriammonium chloride
ZHAO Yingqiu   +5 more
doaj   +1 more source

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