Results 141 to 150 of about 25,899 (279)

Scoping review of comminuted fractures of the proximal phalanx in horses

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Comminuted fractures of the proximal phalanx (CFPP) occur in adult horses. Various treatments have been described. It remains uncertain which is the best therapeutic option. Objectives This study aims to review systematically the existing literature on CFPP in horses, evaluate treatment modalities, synthesise outcomes to assess ...
Charles de Chaisemartin   +2 more
wiley   +1 more source

Small Engine Component Technology (SECT) [PDF]

open access: yes
A study of small gas turbine engines was conducted to identify high payoff technologies for year-2000 engines and to define companion technology plans.
Benn, K.   +4 more
core   +1 more source

Structural analysis of the NifL‐NifA complex reveals the molecular basis of anti‐activation of nitrogen fixation gene expression in Azotobacter vinelandii

open access: yesThe FEBS Journal, EarlyView.
Using cryo‐EM combined with biochemical and genetic approaches, we mapped the interaction surface between NifL and NifA to gain insights into the regulation of nitrogen fixation genes in A. vinelandii. Our findings suggest that NifL, a homolog of histidine kinases lacking phosphorylation activity, evolved to act as a steric block of NifA activity ...
Marcelo Bueno Batista   +6 more
wiley   +1 more source

Design, development, and test of a laser velocimeter for a small 8:1 pressure ratio centrifugal compressor [PDF]

open access: yes
The instrument was designed as a diagnostic tool for the basic fluid dynamics of the inducer, impeller, and diffuser regions of this type compressor. The LV instrumentation was optimized to measure instantaneous velocities up to approximately 500 m/s ...
Dolan, F. X., Runstadler, P. W., Jr.
core   +1 more source

Comparing Groundwater Sampling Devices for Denitrification Assessment Using the N2/Ar Method

open access: yesGroundwater, EarlyView.
Comparing N2, Ar, and excess‐N2 concentrations of groundwater samples collected with different devices shows that N2, Ar, and excess‐N2 concentrations significantly differ between the sampling devices. Using an electrical submersible pump for sampling yields the highest N2, Ar, and excess‐N2 concentrations.
Felix Fahrenbach, Thomas R. Rüde
wiley   +1 more source

Performance of a low-pressure-ratio centrifugal compressor with four diffuser designs [PDF]

open access: yes
A low-pressure-ratio centrifugal compressor was tested with four different diffuser configurations. One diffuser had airfoil vanes. Two were pipe diffusers. One pipe diffuser had 7.5 deg cone diffusing passages.
Klassen, H. A.
core   +1 more source

Evaluation of shear bond strength based on substructure materials and ceramic veneering techniques

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose Bilayered restorations have both the strength of the substructure material and the esthetics of the veneer material; however, they should have appropriate bonding between the two materials. This study aimed to evaluate the shear bond strength (SBS) according to the substructure material and veneering technique used in bilayered ...
Han‐Sol Song   +4 more
wiley   +1 more source

Rotating pressure measurement system using an on board calibration standard [PDF]

open access: yes
A computer-controlled multichannel pressure measurement system was developed to acquire detailed flow field measurements on board the Large Low Speed Centrifugal Compressor Research Facility at the NASA Lewis Research Center.
Blumenthal, Philip Z.   +2 more
core   +1 more source

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