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GRB Energies and E_γ-E_(peak) Correlation with the Jet Expanding Laterally at the Sound Speed

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Chinese Journal of Astronomy and Astrophysics 2007年第4期7卷 503-508页

作者： Xiao-Hong Zhao Jin-ming bai National Astronomical Observatories / Yunnan Observatory Chinese Academy of Sciences Kunming 650011 Graduate School of Chinese Academy of Sciences Beijing 100049

A Gamma-ray burst （GRB） is generally believed to be a jet with a small opening angle, this opening angle is usually derived with the afterglow light curve break time using an analytical method. Here we show that the method is not accurate. Using the set of equations of hydrodynamic evolution with the sideways expansion at the local sound speed derived by previous authors and the observed light curve break times, we numerically derive the initial opening angles. Then the collimation-corrected energies （Eγ） for a sample of GRBs are calculated. They are found to show a wide spread, suggesting that the previously declared clustering by some authors may not exist. Also, the Epeak - Eγ relation, claimed by some other authors （Epeak is the spectral peak energy）, is found still to hold, with a slightly stronger correlation.

关键词： gamma-ray: bursts - methods: numerical - ISM: jets

Prophaenognatha,a New Aclopinae Genus from the Yixian Formation,China and Its Phylogenetic Position Based on Morphological Characters(Coleoptera:Scarabaeidae)

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 984-989,991-993,990页

作者： ming bai Dong REN Xingke YANG Key Laboratory of Zoological Systematics and Evolution Institute of Zoology Chinese Academy of Sciences Beijing 100101 China College of Life Sciences Capital Normal University Beijing 100037 China

Prophaenognatha robusta *** ***.(Scarabaeoidea:Scarabaeidae:Aclopinae),the best-preserved aclopine fossil so far,is described and illustrated from the Upper Jurassic-Lower Cretaceous Yixian Formation of the Jehol Biota,western Liaoning Province,NE *** key to extinct and extant genera of Aclopinae is given and the monophyly of extant and fossil Aclopinae lineages is supported by five character *** new taxon provides evidence about the evolution of Scarabaeoidea with its phylogenetic position inferred based on 68 morphological characters.

关键词： Jurassic-Cretaceous scarab beetles Aclopinae Prophaenognatha taxonomy Jehol biota China

Synthesis and characterization of magnetic polymer microspheres with a core-shell structure

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China Particuology 2007年第1期5卷 180-185页

作者： ming Lu Shu bai Kun Yang Yan Sun Department of Biochemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Non-porous magnetic polymer microspheres with a core-shell structure were prepared by a novel micro-suspension polymerization technique. A stable iron oxide ferrofluid was used to supply the magnetic core, and the polymeric shell was made of glycidyl methacrylate （GMA monomer） and ethylene dimethacrylate （cross-linker）. In the preparation, polyvinyl alcohol was used as the stabilizer, and a lauryl alcohol mixture as the dispersant. The influence of various conditions such as aqueous phase volume, GMA and initiator amounts, reaction time and stirring speed on the character of the microspheres was investigated. The magnetic microspheres were then characterized briefly. The results indicate that the microspheres with active epoxy groups had a narrow size distribution range from 1 to 10 μm with a volume-weighted mean diameter of 4.5 μm. The saturation magnetization reached 19.9 emu/g with little coercivity and remanence.

关键词： Ferrofluid Micro-suspension polymerization Magnetic microspheres Particle size Magnetization

Diverse roles of SERK family genes in plant growth, development and defense response.

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Science China(Life Sciences) 2016年第9期59卷 889-896页

作者： Min Fan Minmin Wang ming-Yi bai Key Laboratory of Plant Cell Engineering and Germplasm Innovation Ministry of Education School of Life Sciences Shandong University

Plant receptor-like protein kinases(RLKs) are transmembrane proteins with an extracellular domain and an intracellular kinase domain, which enable plant perceiving diverse extracellular stimuli to trigger the intracellular signal transduction. The somatic embryogenesis receptor kinases(SERKs) code the leucine-rich-repeat receptor-like kinase(LRR-RLK), and have been demonstrated to associate with multiple ligand-binding receptors to regulate plant growth, root development, male fertility, stomatal development and movement, and immune responses. Here, we focus on the progress made in recent years in understanding the versatile functions of Arabidopsis SERK proteins, and review SERK proteins as co-receptor to perceive different endogenous and environmental cues in different signaling pathway, and discuss how the kinase activity of SERKs is regulated by various modification.

关键词： RLK SERK signal transduction

Extracting Frequent Connected Subgraphs from Large Graph Sets

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Journal of Computer Science & Technology 2004年第6期19卷 867-875页

作者： WeiWang Qing-QingYuan Hao-FengZhou ming-ShengHong bai-LeShi DepartmentofComputingandInformationTechnology FudanUniversityShanghai200433P.R.China

Mining frequent patterns from datasets is one of the key success of data mining research. Currently, most of the studies focus on the data sets in which the elements are independent, such as the items in the marketing basket. However, the objects in the real world often have close relationship with each other. How to extract frequent patterns from these relations is the objective of this paper. The authors use graphs to model the relations, and select a simple type for analysis. Combining the graph theory and algorithms to generate frequent patterns, a new algorithm called Topology, which can mine these graphs efficiently, has been proposed. The performance of the algorithm is evaluated by doing experiments with synthetic datasets and real data. The experimental results show that Topology can do the job well. At the end of this paper, the potential improvement is mentioned.

关键词： data mining frequent pattern graph

Hierarchical adaptive stereo matching algorithm for obstacle detection with dynamic programming

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控制理论与应用（英文版） 2009年第1期7卷 41-47页

作者： ming bai Yan ZHUANG Wei WANG Research Center of Information and Control Dalian University of Technology Dalian Liaoning 116024 China

An adaptive weighted stereo matching algorithm with multilevel and bidirectional dynamic programming based on ground control points （GCPs） is presented. To decrease time complexity without losing matching precision, using a multilevel search scheme, the coarse matching is processed in typical disparity space image, while the fine matching is processed in disparity-offset space image. In the upper level, GCPs are obtained by enhanced volumetric iterative algorithm enforcing the mutual constraint and the threshold constraint. Under the supervision of the highly reliable GCPs, bidirectional dynamic programming framework is employed to solve the inconsistency in the optimization path. In the lower level, to reduce running time, disparity-offset space is proposed to efficiently achieve the dense disparity image. In addition, an adaptive dual support-weight strategy is presented to aggregate matching cost, which considers photometric and geometric information. Further, post-processing algorithm can ameliorate disparity results in areas with depth discontinuities and related by occlusions using dual threshold algorithm, where missing stereo information is substituted from surrounding regions. To demonstrate the effectiveness of the algorithm, we present the two groups of experimental results for four widely used standard stereo data sets, including discussion on performance and comparison with other methods, which show that the algorithm has not only a fast speed, but also significantly improves the efficiency of holistic optimization.

关键词： Stereo matching Ground control points Adaptive weighted aggregation Bidirectional dynamic programming Obstacle detection based on stereo vision

Nonselective β-blockers may induce development of portal vein thrombosis in cirrhosis

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World Journal of Gastroenterology 2014年第32期20卷 11463-11466页

作者： Xing-Shun Qi ming bai Dai-ming Fan Xijing Hospital of Digestive Diseases Fourth Military Medical University Department of Gastroenterology General Hospital of Shenyang Military Area Department of Gastroenterology 463 Hospital of Chinese PLA

Currently, nonselective β-blockers (NSBBs) are commonly used for the prevention of variceal bleeding in liver cirrhosis. The beneficial effects of NSBBs are primarily attributed to the reduction in cardiac output by blockade of β1 receptors and vasoconstriction of the splanchnic circulation by the blockade of β2 receptors. The prognostic value of occlusive portal vein thrombosis (PVT) in cirrhotic patients has been increasingly recognized. The most important risk factor for the development of PVT in liver cirrhosis is the decreased portal vein inflow velocity. Collectively, we propose that the use of NSBBs potentially increases the development of portal vein thrombosis by reducing portal vein inflow velocity. The hypothesis should be confirmed by prospective cohort studies, in which cirrhotic patients without prior PVT treated with and without NSBBs are enrolled, and the development of PVT during follow-up is compared between the two groups. Additionally, subgroup analyses should be performed according to the dosage of NSBBs and the reduction of portal inflow velocity after use of NSBBs.

关键词： Non-selective β-blockers Propranolol Nadolol Portal vein thrombosis Liver cirrhosis

Persimmon leaf flavonoid promotes brain ischemic tolerance

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Neural Regeneration Research 2013年第28期8卷 2625-2632页

作者： mingsan Miao Xuexia Zhang ming bai Linan Wang Henan University of Traditional Chinese Medicine

Persimmon leaf flavonoid has been shown to enhance brain ischemic tolerance in mice, but its mechanism of action remains unclear. The bilateral common carotid arteries were occluded using a micro clip to block blood flow for 10 minutes. After 10 minutes of ischemic preconditioning, 200,100, and 50 mg/kg persimmon leaf flavonoid or 20 mg/kg ginaton was intragastrically administered per day for 5 days. At 1 hour after the final administration, ischemia/reperfusion models were estab- lished by blocking the middle cerebral artery for 2 hours. At 24 hours after model establishment, compared with cerebral ischemic rats without ischemic preconditioning or drug intervention, plasma endothelin, thrombomodulin and yon Willebrand factor levels significantly decreased and intercel- lular adhesion molecule-1 expression markedly reduced in brain tissue from rats with ischemic pre- conditioning. Simultaneously, brain tissue injury reduced. Ischemic preconditioning combined with drug exposure noticeably improved the effects of the above-mentioned indices, and the effects of 200 mg/kg persimmon leaf flavonoid were similar to 20 mg/kg ginaton treatment. These results indicate that ischemic preconditioning produces tolerance to recurrent severe cerebral ischemia. However, persimmon leaf flavonoid can elevate ischemic tolerance by reducing inflammatory reactions and vascular endothelial injury. High-dose persimmon leaf flavonoid showed an identical effect to ginaton.

关键词： neural regeneration traditional Chinese medicine persimmon leaf flavonoid brain injury brainischemic tolerance ischemic preconditioning ginaton ischemia/reperfusion injury intercellularadhesion molecule-I endothelin grants-supported paper neuroregeneration

Development, Reliability and Validity of Traditional Chinese Medicine Health Self-Evaluation Scale(TCM-50)

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Chinese Journal of Integrative Medicine 2017年第5期23卷 350-356页

作者： ZHANG Hui-min bai ming-hua WANG Qi Center for Studies in Constitution and Reproductive Sciences of Traditional Chinese Medicine School of Basic MedicineBeijing University of Chinese MedicineBeijing100029China Infinitus Scientific Advisory Board Guangzhou510623China

Objective： To develop a health-evaluating scale from a Chinese medicine（CM） perspective and reflecting CM conception of health. Methods： The Traditional Chinese Medicine Health Self-Evaluation Scale（TCM-50） was developed by verification of dimensions, formation of item pool, verification of scoring methodology, and pilot test of scale and item analysis. Results： TCM-50 composed of 50 items that could be classified into 4 dimensions including physiology and health, psychology and health, nature and health, and society and health. An examination of reliability and validity of TCM-50 yielded Cronbach＇s α coefficient of 0.927, and half coefficient of r was 0.876. The intraclass correlation coefficient of total score was 0.912. After using SF-36 questionnaire to evaluate the criterion validity, the Pearson r of the score of the two scales from the same participant was 0.740. Conclusions： TCM-50 has good reliability and validity, and can yield similar levels of efficacy as SF-36 in terms of evaluating people＇s overall health level. As a scale based on CM theory, TCM-50 is suitable for self-measuring the general health of Chinese patients.

关键词： Chinese medicine health status scale TCM-50 reliability validity