Results 11 to 20 of about 2,103,567 (340)

Pathway and mechanism study on improvement of N2 selectivity of catalytic denitrification

open access: yesJournal of Saudi Chemical Society, 2023
Recently, nitrate pollution has attracted more public attention. In order to truly remove nitrate and reduce total nitrate content (TN) in water body, more harmless N2 should be converted from nitrate.
Shiyu Xue, Xueyou Wen, Yupan Yun
doaj   +1 more source

Using Functional Programming to recognize Named Structure in an Optimization Problem: Application to Pooling [PDF]

open access: yes, 2016
Branch-and-cut optimization solvers typically apply generic algorithms, e.g., cutting planes or primal heuristics, to expedite performance for many mathematical optimization problems.
Ceccon, F, Kouyialis, G, Misener, R
core   +1 more source

Structure of the human marker of self 5-transmembrane receptor CD47

open access: yesNature Communications, 2021
CD47 is a transmembrane receptor involved in the regulation of various signalling pathways and a promising target for immuno-oncology therapeutics. Here, the authors present the crystal structure of full-length human CD47 and provide insights into the ...
Gustavo Fenalti   +15 more
doaj   +1 more source

Thermal Environment Effects of Built-Up Land Expansion in Shijiazhuang

open access: yesLand, 2022
Exploring the thermal environment effects of built-up land expansion can lay a firm foundation for urban planning and design. This study revealed the spatiotemporal dynamic characteristics of built-up land and heat island center points in Shijiazhuang ...
Ling Qin   +4 more
doaj   +1 more source

Coordinated optimization of visual cortical maps (I) Symmetry-based analysis [PDF]

open access: yes, 2012
In the primary visual cortex of primates and carnivores, functional architecture can be characterized by maps of various stimulus features such as orientation preference (OP), ocular dominance (OD), and spatial frequency.
A Cimponeriu   +104 more
core   +5 more sources

Cluster-Based Optimization of Cellular Materials and Structures for Crashworthiness [PDF]

open access: yes, 2018
The objective of this work is to establish a cluster-based optimization method for the optimal design of cellular materials and structures for crashworthiness, which involves the use of nonlinear, dynamic finite element models. The proposed method uses a
Detwiler, Duane, Liu, Kai, Tovar, Andres
core   +1 more source

DESIGN AND EXPERIMENT OF A COMBINED TYPE SPATIALLY LAYERED PROPORTIONAL FERTILIZATION DEVICE [PDF]

open access: yesEngenharia Agrícola, 2023
To solve the problems of low efficiency, poor fertilizer application, and low fertilizer utilization rate of existing wheat layered fertilization devices (LFD).
Hang Li   +4 more
doaj   +1 more source

The Research and Mechanism of Extracting Vitamin B6 Using Aqueous Two-Phase Systems

open access: yesJournal of Chemistry, 2020
The aim of this work is to investigate the quaternary systems which contain (polyethylene glycol/isopropyl alcohol) + ethanol + salt (Na2SO4/Na2CO3) + water to understand their liquid-liquid equilibrium (LLE) and salting-out ability and apply them to ...
Changyu Lu   +4 more
doaj   +1 more source

YOLO-Extract: Improved YOLOv5 for Aircraft Object Detection in Remote Sensing Images

open access: yesIEEE Access, 2023
Compared with natural images, remote sensing targets have small and dense target shapes as well as complex target backgrounds. As a result, insufficient detection accuracy and target location cannot be accurately identified.
Zhiguo Liu   +4 more
doaj   +1 more source

The LBFGS Quasi-Newtonian Method for Molecular Modeling Prion AGAAAAGA Amyloid Fibrils [PDF]

open access: yes, 2012
Experimental X-ray crystallography, NMR (Nuclear Magnetic Resonance) spectroscopy, dual polarization interferometry, etc are indeed very powerful tools to determine the 3-Dimensional structure of a protein (including the membrane protein); theoretical ...
Hou, Yating   +4 more
core   +3 more sources

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