Results 1 to 10 of about 614,697 (267)

The ρ-meson longitudinal leading-twist distribution amplitude

Physics Letters B, 2014
In the present paper, we suggest a convenient model for the vector ρ-meson longitudinal leading-twist distribution amplitude ϕ2;ρ‖, whose distribution is controlled by a single parameter B2;ρ‖.
Hai-Bing Fu, Xing-Gang Wu, Hua-Yong Han, Yang Ma, Huan-Yu Bi   +4 more
doaj   +3 more sources

Longitudinal Variation of Thermospheric Density during Low Solar Activity from APOD Observations

Atmosphere, 2023
The longitudinal distribution of upper atmospheric density has been broadly studied. However, the studies mostly focused on 24 h averaged distribution.
Guangming Chen, Xie Li, Maosheng He, Shushi Liu, Haijun Man, Hong Gao, Yongping Li   +6 more
doaj   +1 more source

Reconstruction of longitudinal distributed incoherent sources [PDF]

Optics Letters, 1996
We describe measurement of the degree of coherence induced by a random light source distributed along the longitudinal z axis. If this degree of coherence is measured only between all the in-plane pairs of points placed along the radial lines it is proportional to the Fourier transform of the source's three-dimensional intensity distribution as seen ...
J, Rosen, A, Yariv
openaire   +2 more sources

Reduced pressure effects on smoke temperature, CO concentration and smoke extraction in tunnel fires with longitudinal ventilation and vertical shaft

Case Studies in Thermal Engineering, 2022
Nowadays, high-altitude tunnels at reduced pressure are emerging in the world's road network. A better understanding of the temperature and CO concentration distribution as well as the shaft extraction performance during tunnel fires with combined ...
Jie Wang, Xiaowei Kong, Yongjie Fan, Xuepeng Jiang, Kaihua Lu   +4 more
doaj   +1 more source

The effect of breastfeeding on children's growth indices up to 6 months: An application of multivariate t linear mixed model

Journal of Research in Medical Sciences, 2023
Background: This study aimed to determine the effect of breastfeeding on children's growth indices. Materials and Methods: Longitudinal data of children's growth (height, weight, and head circumference) were as a dependent variable and type of nutrition ...
Maryam Moradi, Kambiz Ahmadi Angali, Mohammad Hassan Behzadi, Rahman Farnoosh   +3 more
doaj   +1 more source

Environmental drivers influencing stonefly assemblages along a longitudinal gradient in karst lotic habitats

Journal of Limnology, 2018
Stoneflies are among the most sensitive aquatic insect taxa and therefore arguably the best indicator of the excellent, i.e. pristine, ecological status of surface streams.
Anamarija Ridl, Marina Vilenica, Marija Ivković, Aleksandar Popijač, Ignac Sivec, Marko Miliša, Zlatko Mihaljević   +6 more
doaj   +1 more source

Semeadora-adubadora: exigências em função do preparo do solo, da pressão de inflação do pneu e da velocidade Planter: requirements as related to soil tillage, tire pressure, and machine speed

Revista Brasileira de Ciência do Solo, 2008
As semeadoras-adubadoras, responsáveis pela correta adição de semente e adubo ao solo, possuem mecanismos dosadores acionados por suas rodas motrizes, que giram em função do contato com a superfície do solo.
Carlos Eduardo Angeli Furlani, Rouverson Pereira da Silva, Alberto Carvalho Filho, Jorge Wilson Cortez, Danilo Cesar Checchio Grotta   +4 more
doaj   +1 more source

Measurement of the longitudinal bunch-shape distribution for a high-intensity negative hydrogen ion beam in the low-energy region

Physical Review Accelerators and Beams, 2023
A bunch-shape monitor (BSM) is a useful device for performing longitudinal beam tuning using the pointwise longitudinal phase distribution measured at selected points in the beam transportation.
R. Kitamura, K. Futatsukawa, N. Hayashi, K. Hirano, Y. Kondo, S. Kosaka, T. Miyao, T. Morishita, Y. Nemoto, H. Oguri   +9 more
doaj   +1 more source

Investigation of wake flow on submerged vegetation patches based on spectral proper orthogonal decomposition

Shui kexue jinzhan, 2023
The multi-scale turbulent structures enable understanding the vegetation patch-affected sediment transport and riverbed evolution. Here, flume-based wake flow characteristics were analysed under different aspect ratios and vegetation densities.
Weile ZHANG, Shiqiang WU, Xiufeng WU, Wanyun XUE, Fangfang WANG, Yu ZHANG, Sihan YU   +6 more
doaj   +1 more source

Numerical Simulation of Longitudinal Residual Stress Distribution in Welded T-Section of Q690 High Strength Steel

Taiyuan Ligong Daxue xuebao, 2023
Welding longitudinal residual stress is one of the important factors affecting the overall stability of steel compression members. On ANSYS, the magnitude and distribution of longitudinal residual stress in welded T-section of Q690 high strength steel ...
Xiaoli XIONG, Mengdan LU, Yanan LU
doaj   +1 more source