oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2017 ( 42 )

2016 ( 59 )

2015 ( 677 )

2014 ( 1000 )

自定义范围…

匹配条件: “Xin Hou” ,找到相关结果约25146条。
列表显示的所有文章,均可免费获取
第1页/共25146条
每页显示
The Design of State Monitoring System Based on Complex Network
Xin Hou,Wenjie Ge
Information Technology Journal , 2012,
Abstract: The essence of the state monitoring for the electric power network is the pattern clustering of its operating state. This study introduces the research results of complex network, establishing the network model of fault diagnosis, converting the fault diagnosis for the electric power network into the detection problem of sub-network, realizing the state clustering by means of the block merging algorithms and the optimal rules functions. On this basis, a practical state monitoring system for the electric power network is designed which real-time collects the operating status data by the multi-sensor. The method based on complex network analysis is proved by the experiments to be effective in state classification and fault diagnosis for the electric power network.
Online Effective Identification of Glycopeptide Using Liquid Chromatography Combined with Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR-MS)*  [PDF]
Ling Xin, Li Hou, Yue Zhou, Huiping Wang, Heming Yu
Advances in Bioscience and Biotechnology (ABB) , 2015, DOI: 10.4236/abb.2015.69065
Abstract: The detailed glycan structural analysis of glycoprotein is amenable to glycopeptide enrichment. Here, we develop a simple, effective and economical approach to enrich glycopeptides from proteolytically digested peptide mixtures by chromatographic column packed with graphite carbon and activated charcoal (G/A-column). Glycopeptide from ovalbumin was efficiently enriched by homemade G/A-column using liquid chromatography and the structure of glycopeptide was obtained by tandem mass spectrometry using Fourier transform ion cyclotron resonance mass spectrometry. The results in this study demonstrate that G/A-column can be used to enrich N-glycolpeptides and be benefit for online identification of glycopeptide using LC-MS.
K/T boundary: Discussion of the platinum group elements as indicators of extraterrestrial materials
Quanlin Hou,Peixue Ma,Xin Ju
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02883399
Abstract: Whether the platinum group elements (PGE) can be taken as the indicators of extraterrestrial materials is a very important and interesting scientific problem. It is discussed on the basis of systematic investigation and study of a great amount of related literature. The following conclusions can be obtained: (i) extraterrestrial impact event can cause the PGE anomaly; conversely, the PGE anomaly may not represent the existence of extraterrestrial impact event, because the PGE anomaly can be caused by many terrestrial events (e. g. volcanic activity); (ii) the PGE anomaly, especially the global PGE anomaly can inspire us to think it from extraterrestrial event, but it may not be as useful as previously thought as unambiguous identifiers of large extraterrestrial impact event in the earth’s history.
Limited Hydrolysis of Two Soybean Protein Products with Trypsin or Neutrase and the Impacts on their Solubility, Gelation and Fat Absorption Capacity
Yao Hou,Xin-Huai Zhao
Biotechnology , 2011,
Abstract: Soybean Protein Concentrates (SPC) and Soybean Protein Isolates (SPI) were hydrolyzed with trypsin or neutrase to a degree of hydrolysis of 1 and 2%, respectively, to reveal the impacts of limited hydrolysis on their functional properties. Sodium dodecylsulfate-polyacrylamide gel electrophoresis analysis showed that the hydrolysates prepared were hydrolyzed proteins but with different peptide profiles. The evaluation results indicated that the hydrolysates had an increased solubility in pH range of 3-7 over the original SPC or SPI, especially at pH of 4.5. When the hydrolysates were used to prepare heat-induced gels, limited hydrolysis of SPC or SPI led to a decreased or an enhanced hardness of the gels prepared. The SPC hydrolysates had an increased fat absorption capacity about 17-29% while the SPI hydrolysates had a decreased fat absorption capacity about 17-23%. The present study showed that limited hydrolysis of SPC and SPI by neutrase or trypsin could be applied to improve some functional properties of them intended.
New Characterization of Disorder Taming Spatiotemporal Chaos
Feng Qi,Zhonghuai Hou,Houwen Xin
Physics , 2003, DOI: 10.1016/S0375-9601(03)00081-1
Abstract: In the present letter, we introduce a new method to quantify the effect of disorder on spatiotemporal chaos [Y. Braiman, etc. Nature, 378, p465 (1995)]. Base on the autocorrelation function, we define a parameter to measure the effect of disorder. The results are intriguing and similar to the results obtained by J. Lindner etc. [J. Lindner, etc. Physics Letters A, 231, p164 (1997)]. Using this order parameter, the effect of disorder on spatiotemporal chaos in different conditions has also been discussed.
On total colorings of 1-planar graphs
Xin Zhang,Jianfeng Hou,Guizhen Liu
Computer Science , 2013,
Abstract: A graph is 1-planar if it can be drawn on the plane so that each edge is crossed by at most one other edge. In this paper, we confirm the total-coloring conjecture for 1-planar graphs with maximum degree at least 13.
In Vitro Cytotoxicity Evaluation of Highly Absorbent Foam Dressings Based on Silver Zirconium Phosphate via IC50 Value  [PDF]
Chenghu Liu, Li Hou, Lili Liu, Zhonghua Qu, Xin Wang, Xiaoxia Sun, Ping Wu, Yanping Shi
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2016, DOI: 10.4236/jbnb.2016.71005
Abstract:

In this study, we, for the first time, tried to apply IC50 values (inhibitory concentration estimated to affect the endpoint in question by 50%) in the MTT colorimetric assay to investigate the cytotoxic effects of highly absorbent foam dressings based on silver zirconium phosphate, a newly nano-based matrix. Our results showed that silver released from dressings based on silver zirconium phosphate attributed mainly to highly cytotoxic to L929 cells cultured with MEM containing 10% fetal bovine serum. In addition, we have also compared the IC50 values among different dilutions of AgNO3 solution, silver based dressing extracts and material reference control (ZDEC) extracts using the optimized MTT assay, along with characterizing the silver content in the dressing extracts using atomic absorption spectroscopy. Results have shown that the IC50 values of AgNO50 solution, silver based dressing extracts and ZDEC extracts are 3.5 μg/mL, 3.8 μg/mL and 8.4%, respectively. And there exist some good agreements between qualitative and quantitative evaluation method as well. In conclusion, our study has led to the view that the IC50 value is a promising quantitative index for screening cytotoxicity with regard to silver based dressings.

A Comparison of Active and Passive Metamaterials from Equivalent Lumped Elements Modes  [PDF]
Ya-Fen Ge, Hui Huang, Yong Liu, Hou-Jun Sun, Xin Lv, Li-Ming Si
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.32B061
Abstract:

With ever-increasing operating frequencies and complicated artificial structures, loss effects become more and more important in applications of metamaterials. Based on circuit theory and transmission line principle, the design equations for effective electromagnetic (EM) parameters (attenuation constant α, phase constant β, characteristic impedance Z0) of general active and passive metamaterial are compared and derived from the equivalent lumped circuit parameters (R, G, LL, CL, LR, CR). To verify the design equations, theα, βand Z0 indifferent cases, including balanced, unbalanced, lossless, passive and active, are shown by numerical simulations. The results show that using the active method can diminish the loss effects. Meantime, it also has influence on phase constant and real part of characteristic impedance.


Ethylene-induced nitric oxide production and stomatal closure in Arabidopsis thaliana depending on changes in cytosolic pH
Jing Liu,GuoHua Liu,LiXia Hou,Xin Liu
Chinese Science Bulletin , 2010, DOI: 10.1007/s11434-010-4033-3
Abstract: We investigated changes in cytosolic pH and nitric oxide (NO) during ethylene-induced stomatal closure in Arabidopsis thaliana using pharmacological, laser scanning confocal microscopy (LSCM), and spectrophotography techniques. Treatment with ethephon (a direct source of ethylene when applied to plants) and 1-aminocycloaminopropane-1-carboxylic acid (ACC, an ethylene precursor) resulted in a rapid accumulation of NO and cytosolic alkalinization in guard cells. Acetic acid (a weak acid) and sodium orthovanadate (NaVO3; a plasmalemma H+-ATPase inhibitor) reduced stomatal closure induced by ethylene and blocked ethylene-induced activity of nitrate reductase. However, 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), a NO scavenger, had no effect. These results suggest that NO production is downstream of the rise in cytosolic pH in A. thaliana.
Hydrogen sulfide induced by nitric oxide mediates ethylene-induced stomatal closure of Arabidopsis thaliana
Jing Liu,LiXia Hou,GuoHua Liu,Xin Liu,XueChen Wang
Chinese Science Bulletin , 2011, DOI: 10.1007/s11434-011-4819-y
Abstract: Pharmacological, laser scanning confocal microscopic (LSCM), real-time PCR and spectrophotographic approaches are used to study the roles of hydrogen sulfide (H2S) and nitric oxide (NO) in signaling transduction of stomatal movement response to ethylene in Arabidopsis thaliana. In the present study, inhibitors of H2S synthesis were found to block ethylene-induced stomatal closure of Arabidopsis. Treatment with ethylene induced H2S generation and increased L-/D-cysteine desulfhydrase (pyridoxalphosphate-dependent enzyme) activity in leaves. Quantitative PCR analysis showed AtL-CDes and AtD-CDes transcripts were induced by ethylene. It is suggested that ethylene-induced H2S levels and L-/D-cysteine desulfhydrase activity decreased when NO was compromised. The data clearly show that ethylene was able to induce H2S generation and stomatal closure in Atnoa1 plants, but failed in the Atnia1,nia2 mutant. Inhibitors of H2S synthesis had no effect on ethylene-induced NO accumulation and nitrate reductase (NR) activity in guard cells or leaves of Arabidopsis, whereas ethylene was able to induce NO synthesis. Therefore, we conclude that H2S and NO are involved in the signal transduction pathway of ethylene-induced stomatal closure. In Arabidopsis, H2S may represent a novel downstream indicator of NO during ethylene-induced stomatal movement.
第1页/共25146条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.