Results 61 to 70 of about 515 (159)

Preliminary Altitude Performance Data of J71-A2 Turbojet Engine Afterburner

open access: yes, 1954
The performance and operational characteristics of the J71-A2 turbojet-engine afterburner were investigated for a range of altitudes from 23,000 to 60,000 feet at a flight Mach number of 0,9 and at flight Mach numbers of 0.6, 0.9, and 1.0 at an altitude ...
Useller, James W., Mallett, William E.
core  

Insight into the Efficiency and Stability of All-Polymer Solar Cells Based on Two 2D-Conjugated Polymer Donors: Achieving High Fill Factor of 78%

open access: yes, 2019
Achieving high fill factor (FF) is a great challenge for the all-polymer solar cells (all-PSCs) since the FF can be influenced by numerous complicated factors.
Xiaohui Liu (6412)   +6 more
core   +1 more source

Component Performance Investigation of J71 Type II Turbines: III - Overall Performance of J71 Type IIA Turbine

open access: yes, 1955
The over-all component performance characteristics of the J71 Type IIA three-stage turbine were experimentally determined over a range of speed and over-all turbine total-pressure ratio at inlet-air conditions af 35 inches of mercury absolute and 700 deg.
Davison, Elmer H.   +2 more
core  

Component Performance Investigation of J71 Experimental Turbine. Iv-effect of First-stator Adjustment; Over-all Performance of J71-97 Turbine with 132-percent-design Stator Area

open access: yes, 1956
An experimental invesitgation of the effect of increasing the first-stator area of the J71-97 experimental three-stage turbine from 97 percent of design to 132 percent revealed (1) the maximum efficiency obtained decreased from 0.891 to 0.869, (2) the ...
Petrash, Donald A   +2 more
core  

Component Performance Investigation of J71 Experimental Turbine: III - Effect of Third-Stage Shrouding on Over-All Performance

open access: yes, 1956
A negligible effect on turbine efficiency and only a small decrease in turbine weight flow were observed when the J71 experimental turbine with 97-percent-design stator areas was modified to include shrouding of the third-stage ...
Schum, Harold J.   +2 more
core  

Experimental Investigation of Stage Performance of J71 Three-stage Turbine

open access: yes, 1954
An experimental investigation of the stage performance of the J71 three-stage turbine at design speed and pressure ratio was conducted as part of a program involving research on the design and operational characteristics of high-work-output multistage ...
Forrette, Obert E
core  

The Impact of Racial Discrimination on the Early Career Outcomes of Young Men

open access: yes, 2007
Early career outcomes, Discrimination, Wage gap, J15, J31, J71,
Randall King, Francesco Renna
core   +1 more source

Photovoltaic polymer Photosensitizer-Doped Nano-Therapeutic reagent for in vivo enhanced bioimaging guided photodynamic therapy

open access: yes, 2022
For tumor imaging guided photodynamic therapy process, the conundrum of achieving high fluorescence efficiency and singlet oxygen generation efficiency concurrently under the excitation condition of visible light has become a major obstacle to the ...
Xu, Yanli   +10 more
core   +1 more source

La importancia de corregir por el sesgo de selección en el análisis de las brechas salariales por género: un estudio para Argentina, Brasil y México

open access: yesEnsayos Revista de Economía, 2012
El estudio de las brechas salariales por género debe considerar el sesgo de selección, resultado de la decisión endógena de ingresar al mercado laboral.
Adrián Rubli
doaj  

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