Results 11 to 20 of about 551,707 (268)

Analysis of the state of mechanized sowing of rice in seedlings [PDF]

open access: yesBIO Web of Conferences
This article presents a brief analysis of the state of rice cultivation, the main advantages and disadvantages of seedling rice planting, analyzes the prospects for rice cultivation and mechanization of this process in Uzbekistan.
Alimova Feruza   +3 more
doaj   +1 more source

Through-Floor Vital Sign Searching for Trapped Person Using Wireless-Netted UWB Radars

open access: yesApplied Sciences, 2021
In personnel rescue applications, considerable attention has been paid to the positioning method of living persons. Especially, the effective vital sign searching is urgently required.
Zhenghuan Xia   +5 more
doaj   +1 more source

Optimization of the parameters of the pneumatic feed mechanism for precise clustered sowing [PDF]

open access: yesBIO Web of Conferences
The article is devoted to the description of one of the ways to improve the mechanization of sowing, namely, precise sowing in a clustered way. It is analyzed that precise sowing provides a given placement of plants over the area and makes it possible ...
Alimova Feruza   +3 more
doaj   +1 more source

Temperature-Dependent Dual Fluorescence from Small Organic Molecules

open access: yesOrganic Materials, 2022
The temperature-dependent dual fluorescence from a single component of small organic molecules (SOMs) is very promising for the ratiometric fluorescence sensing of temperature. However, the SOM-based fluorophores typically only show one fluorescence band.
Min Wang, Run-Ze Wang, Cui-Hua Zhao
doaj   +1 more source

Review of Photonic Integrated Optical Phased Arrays for Space Optical Communication

open access: yesIEEE Access, 2020
A review of photonic integrated optical phased array (OPA) for space optical communication is presented. We review and summarize the typical works of the photonic integrated OPAs with one-dimensional and two-dimensional optical antenna array in recent ...
Jingwen He, Tao Dong, Yue Xu
doaj   +1 more source

Ground states of theXY-model

open access: yesCommunications in Mathematical Physics, 1985
Ground states of the XY-model on infinite one-dimensional lattice, specified by the Hamiltonian \[ -J[\sum \{(1+\gamma)\sigma_ x^{(j)}\sigma_ x^{(j)}+(1-\gamma)\sigma_ y^{(j)}\sigma_ y^{(j+1)}\}+2\lambda \sum \sigma_ z^{(j)}] \] with real parameters \(J\neq 0\), \(\gamma\) and \(\lambda\), are all determined. The model has a unique ground state for \(|
Araki, Huzihiro, Matsui, Taku
openaire   +2 more sources

Product-state approximations to quantum ground states [PDF]

open access: yesProceedings of the forty-fifth annual ACM symposium on Theory of Computing, 2013
44 pages.
Fernando G. S. L. Brandão   +1 more
openaire   +4 more sources

Electronic ground state of Ni2+ [PDF]

open access: yesThe Journal of Chemical Physics, 2016
The Φ9/24 ground state of the Ni2+ diatomic molecular cation is determined experimentally from temperature and magnetic-field-dependent x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap, where an electronic and rotational temperature of 7.4±0.2 K was reached by buffer gas cooling of the molecular ion.
Leistner, G.   +6 more
openaire   +4 more sources

The role of Ta on twinnability in nanocrystalline Cu–Ta alloys

open access: yesMaterials Research Letters, 2017
Nanostructured Cu–Ta alloys show promise as high-strength materials in part due to their limited grain growth. In the present study, we elucidate the role of Ta on the transition from deformation twinning to dislocation-mediated slip mechanisms in ...
M. A. Bhatia   +4 more
doaj   +1 more source

Groundstate for the Schrödinger-Poisson-Slater equation involving the Coulomb-Sobolev critical exponent

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we study the existence of ground state solutions for the Schrödinger-Poisson-Slater type equation with the Coulomb-Sobolev critical growth: −Δu+14π∣x∣∗∣u∣2u=∣u∣u+μ∣u∣p−2u,inR3,-\Delta u+\left(\frac{1}{4\pi | x| }\ast | u{| }^{2}\right)u=|
Lei Chunyu, Lei Jun, Suo Hongmin
doaj   +1 more source

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