Results 61 to 70 of about 2,099 (133)

Genotype, sex and interaction effect on lamb growth traits [PDF]

Biotechnology in Animal Husbandry, 2015
The pure breeds and crossing have an important role in production. It is essential in sheep meat production to maintain the genetic diversity of the adapted breeds, pure breeds and their crosses.
Petrović V.C., Petrović M.P., Ružić-Muslić D., Maksimović N., Selionova M.I., Aybazov M.M., Malyukova M.A.   +6 more
doaj  

Concept Evaluation of Radical Short–Medium-Range Aircraft with Turbo-Electric Propulsion

Aerospace
Ambitious targets for the coming decades have been set for further reductions in aviation greenhouse gas emissions. Hybrid electric propulsion (HEP) concepts offer potential for the mitigation of these aviation emissions. To investigate this potential in
W. J. Vankan, W. F. Lammen, E. Scheers, P. J. Dewitte, Sebastien Defoort   +4 more
doaj   +1 more source

Computational Fluid Dynamics Study on the Aerodynamics of a Blended Wing Body with Ground Effect in Subsonic Conditions [PDF]

Journal of Applied Fluid Mechanics
Blended Wing Body (BWB) aircraft designs have garnered significant interest due to their potential for improved aerodynamic efficiency, particularly during critical phases of flight such as landing and take-off.
S. Mohan, P. Kumar
doaj   +1 more source

Evaluation of Soil Samples Preparation Techniques for Detecting Selenium by Using Atomic Fluorescence Spectroscopy-Based Detection

Journal of Analytical Methods in Chemistry
Selenium (Se) can cause poisoning in the human body, including dry, brittle, and easy-to-fall-off hair, white spots and longitudinal lines of nails, skin damage, nervous system abnormalities, and even death.
Lin Zhu, Zheng-he Hu, Xiu-long Chen, Surat Hongsibsong   +3 more
doaj   +1 more source

An integrated framework for static stability design of tailless BWB mini-UAVs based on XFLR5, LHS, and Gaussian Process Regression

Mechanics & Industry
Tailless blended wing body (BWB) mini-UAVs offer important aerodynamic and structural advantages, but the absence of conventional tail surfaces makes inherent static stability difficult to achieve during conceptual design.
Hakim Mohamed, Choukri Saad, Ait Ali Mohamed E.   +2 more
doaj   +1 more source

Effect of canard-chordwise blowing on the aerodynamic characteristics of blended wing body aircraft

Xibei Gongye Daxue Xuebao
To enhance the effect of the canard increasing lift and pitching moment coefficient of the blended-wing-body(BWB) aircraft, numerical simulation is adopted to analyze the effect of the canard-chordwise blowing on the low-speed aerodynamic characteristics
YUAN Changyun, XIA Ming, GAO Weicheng, SHI Weifeng, GONG Wenxiu, YUAN Haoqian   +5 more
doaj   +1 more source

Long-term Mid-infrared Color Variations of Narrow-line Seyfert 1 Galaxies

The Astrophysical Journal
We present a systematic investigation of long-term mid-infrared (MIR) color variability in 1718 narrow-line Seyfert 1 galaxies (NLSy1s) using 14 yr of Wide-field Infrared Survey Explorer/NEOWISE monitoring data.
Jiahua Wu, Huifang Xie, Liming Dou, Yanli Ai, Tinggui Wang, Xinwen Shu, Ning Jiang, Luis C. Ho, Junhui Fan   +8 more
doaj   +1 more source

The U.S. Air Force Next-Generation Air-Refueling System: A Resurgence of the Blended Wing Body?

Aerospace
The interest in flying wings dates as far as the early years of the aviation age. Early investigations of the feasibility of the concept demonstrated increased aerodynamic efficiency and reduced fuel consumption.
Guilherme Fernandes, Victor Maldonado
doaj   +1 more source

Multi-Point Optimization Design of Blended Wing Body Based on Discrete Adjoint Method

Aerospace
In actual flight, aircraft rarely operate under a single design condition; multiple flight states must be considered to meet performance requirements.
Yuan Cui, Jiandong He, Qiuhong Li, Bokai Zhang   +3 more
doaj   +1 more source

Improved construction and applicability analysis of stomatal conductance model for cotton under drip irrigation in Northern Xinjiang. [PDF]

Front Plant Sci
Qi W, Meng N, Cheng Q, Ma X, Wang W, Wang J, Wang C, Wang H.   +7 more
europepmc   +1 more source