Results 101 to 110 of about 23,260,852 (262)

衰减全反射红外光谱对易燃液体的快速筛选

open access: yes, 2018
As a destructive criminal behavior, arson has brought serious losses to public safety and social stability. Subject to the destruction of fire and fire fighting behavior, most evidence has become beyond recognition.
Zhu Jun   +8 more
core   +1 more source

Image depth estimation assisted by multi-view projection

open access: yesComplex & Intelligent Systems
In recent years, deep learning has significantly advanced the development of image depth estimation algorithms. The depth estimation network with single-view input can only extract features from a single 2D image, often neglecting the information ...
Liman Liu   +6 more
doaj   +1 more source

Spectral Analysis Implies Spectral Synthesis

open access: yesMathematics
In this paper we show that spectral analysis implies spectral synthesis for arbitrary varieties on locally compact Abelian groups that have no discrete subgroups of an infinite torsion-free rank.
László Székelyhidi
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Determination of Silicon and Iron Contents in Primary Aluminum by Laser-Induced Breakdown Spectroscopy

open access: yes, 2019
The content of silicon and iron in primary aluminum were detected by self-built LIBS device. The micro-morphology analysis of the primary aluminum sample was carried out before the experiment, It was found the distribution of silicon element is ...
Ma Liang   +5 more
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Bidirectional Cross-Level Feature Interaction and Context-Aware Multi-Scale Attention for Crowd Counting

open access: yesAI
Crowd counting estimates the number and spatial distribution of people in images and videos, supporting smart city management and public safety. Existing methods often rely on intra-level feature refinement and simple cross-scale fusion, such as ...
Zhifan Jin   +5 more
doaj   +1 more source

QUALITATIVE METHODS OF SPECTRAL ANALYSIS IN DIAGNOSTICS OF TRANSFORMER OILS

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2019
: In this paper, we offer a simple, intuitive, qualitative method for analyzing in diagnosing transformer oils, which does not require expensive equipment and at the initial stage allows us to determine the degree of oil aging.
D. M. Valiullina   +2 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Examination of Polymeric Azomethine Compounds and Their Transition Metal Complexes by Using XRF and XRD Technique

open access: yes, 2020
In this study, the electronic transition properties and structural analysis of the metal complexes (Ni(Ⅱ), Co(Ⅱ), Cu(Ⅱ) and Mn(Ⅱ)) of three different polymer ligands were performed by using XRF and X-ray diffraction (XRD) techniques, respectively.
Kazancı, Ayşe   +6 more
core   +1 more source

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