Results 71 to 80 of about 211,193 (207)

Thermal fluid–structure interaction analysis of the leakage characteristics and deformation mechanism in labyrinth seals [PDF]

open access: yesAIP Advances
While labyrinth seals are extensively employed in rotating machinery, prior studies have predominantly quantified the leakage performance of seal geometries, with less attention given to the multiphysics coupling fluid flow and structural deformation ...
Jingru Sun   +5 more
doaj   +1 more source

Nuclear magnetic resonance spectroscopy. A stereospecific ^3J_(CF) coupling in the low-temperature ^(13)C nmr spectrum of 1,1-difluorocyclohexane [PDF]

open access: yes, 1970
The proton-decoupled ^(13)C nmr spectrum of 1,1-difluorocyclohexane has been examined at room temperature and at -90 degrees C. There are only minor changes in the one-bond and two-bond carbon-fluorine scalar coupling constants at the lower temperature ...
Charrier, Claude   +2 more
core  

Delayed crystallization response-inspired waterborne polyurethane with high performance

open access: yesNature Communications
Waterborne polyurethane elastomers (WPUE), synthesized in aqueous solutions, represent a revolutionary sustainable alternative to thermoplastic polyurethane elastomers (TPUE), which are typically produced using organic solvent.
Chenxi Huyan   +10 more
doaj   +1 more source

Highly Conductive Single-Ion Polymeric Electrolyte for Long-Cycle-Life Lithium Metal Batteries

open access: yesEnergies
Considerable research has been conducted on single-ion conductive polymeric electrolytes with high lithium ion transference numbers. However, low ionic conductivity is a long-standing challenge for lithium metal batteries, hindering the development of ...
Yuying Yang   +5 more
doaj   +1 more source

Numerical simulation of ammonia refueling process for ammonia-powered vehicles

open access: yesYou-qi chuyun
ObjectiveAmmonia energy, a zero-carbon carrier, is emerging as a key solution for the green transformation of transportation, including vehicles and ships.
Lin TENG   +7 more
doaj   +1 more source

Chemical functionalization of graphene

open access: yes, 2009
Experimental and theoretical results on chemical functionalization of graphene are reviewed. Using hydrogenated graphene as a model system, general principles of the chemical functionalization are formulated and discussed.
Boukhvalov, D. W., Katsnelson, M. I.
core   +1 more source

Effect of fluroine content, atmosphere, and burnishing technique on the lubricating properties of graphite fluoride [PDF]

open access: yes
Eight different graphite fluoride compounds with fluorine to carbon ratios varying from x = 0.25 to 1.1 were evaluated as burnished films in order to determine the effect of fluorine content on the solid lubricant properties of graphite fluoride.
Fusaro, R. L.
core   +1 more source

Density Functional Study of Cubic to Rhombohedral Transition in $\alpha$-AlF$_3$

open access: yes, 2003
Under heating, $\alpha$-AlF$_3$ undergoes a structural phase transition from rhombohedral to cubic at temperature $T$ around 730 K. The density functional method is used to examine the $T$=0 energy surface in the structural parameter space, and finds the
B. Adolph   +18 more
core   +1 more source

110GHz fT Silicon Bipolar Transistors Implemented using Fluorine Implantation for Boron Diffusion Suppression

open access: yes, 2006
This paper investigates how fluorine implantation can be used to suppress boron diffusion in the base of a double polysilicon silicon bipolar transistor and hence deliver a record fT of 110 GHz.
Alemanni, C.   +8 more
core   +1 more source

3,4-Bis(3-tetrazolylfuroxan-4-yl)furoxan: A Linear C–C Bonded Pentaheterocyclic Energetic Material with High Heat of Formation and Superior Performance

open access: yesACS Omega, 2020
Lianjie Zhai   +6 more
doaj   +1 more source

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