Results 31 to 40 of about 66,420 (262)

Study on Friction Loss of Carcass in Un-bonded Flexible Riser

Shiyou jixie, 2018
With the continuous development of offshore oil and gas resources, the application of un-bonded flexible risers has become more widespread. When the vessel hoisting flexible riser on the surface of the water experience irregular movement, the flexible ...
Li Wenbo, Liu Junpeng, Luo Xiaolan, Duan Menglan   +3 more
doaj  

An analytical approach for predicting the fillet and contact stresses in symmetric and asymmetric spur gears under frictional mesh assumptions

Results in Engineering
A precise estimation of the bending and contact stresses, as well as the true friction value during the gear mesh, are critical aspects of a cost-effective and safe gear design.
Ahmed A. Toman, Mohammad Q. Abdullah
doaj   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source

RESEARCH OF ADAPTIVE FRICTION CLUTCH WITH DIFFERENTIATED FRICTION PAIRS

Advanced Engineering Research, 2011
The problem of the clutch operation accuracy increase without introducing material changes into its construction is solved on the ground of N.D. Verner's construction of the adaptive lamellar clutch which friction group consists of disks made from the ...
Alexander E. Fokin, Maxim D. Gavrilenko, Mikhail P. Shishkarev   +2 more
doaj  

A Review of Pressure Drop and Mixing Characteristics in Passive Mixers Involving Miscible Liquids

Micromachines
The present review focuses on the recent studies carried out in passive micromixers for understanding the hydrodynamics and transport phenomena of miscible liquid–liquid (LL) systems in terms of pressure drop and mixing indices.
Arijit Ganguli, Viraj Bhatt, Anna Yagodnitsyna, Dipak Pinjari, Aniruddha Pandit   +4 more
doaj   +1 more source

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

FEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

Drag Reduction by Dried Malted Rice Solutions in Pipe Flow

Liquids
In this study, the friction factor of a turbulent pipe flow for dried rice malt extract solutions was experimentally reduced to that of a Newtonian fluid.
Keizo Watanabe, Satoshi Ogata
doaj   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Forming behavior during drawing of aluminum sandwich composite laminate – a comprehensive experimental analysis

Cogent Engineering
The main objective of this study was to analyze the deep drawing behavior of sandwich laminate for various blank shapes and lubrications. Commercially available aluminum sandwich laminate with face sheets made of aluminum alloy, AA2219 and a core made of
Ganesh Radhakrishnan, Teodora Odett Breaz, Abdul Rahman Yaqoob Saif Al Hinai, Khalid Hamed Al Shaibani, Mujahid Said Al Farqani, Osama Sultan Al Busaidi, Shuaib Mohammed Al Adawi, Kadhavoor R. Karthikeyan   +7 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source