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Spectral Properties of Anomalous X-ray Pulsars

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Chinese Journal of Astronomy and Astrophysics 2003年第6期3卷 543-550页

作者： Ye Lu, Wei wang and yong-heng ZhaoNational Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 National Astronomical Observatories CAS NAOC Beijing 100012 China

We examine the spectra of the persistent emission from anomalous X-ray pulsars (AXPs) and their variation with the spin-down rate . Based on an accretion-powered model, the influences of both the magnetic field and the mass accretion rate on the spectral properties of AXPs are addressed. We then investigate the relation between the spectral property of AXPs and mass accretion rate . The result shows that there exists a linear correlation between the photon index and the mass accretion rate: the spectral hardness increases with increasing . A possible emission mechanism for the explanation of the spectral properties of AXPs is also discussed.

关键词： pulsars: general stars: neutron X-rays: stars accretion: accretion disks

Expression of Thioredoxin System Protein Induced by Silica in Rat Lung Tissue

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Biomedical and Environmental Sciences 2022年第7期35卷 663-668页

作者： GUAN Yi LI Gai LIU Nan wang yong heng ZHOU Qiang CHANG Mei Yu ZHAO Lin Lin YAO San Qiao School of Public Health North China University of Science and TechnologyTangshan 063210HebeiChina North China University of Science and Technology Affiliated Hospital Tangshan 063000HebeiChina School of Pharmacy North China University of Science and TechnologyTangshan 063210HebeiChina Xinxiang Medical University Xinxiang 453003HenanChina

Silicosis,a potentially fatal global occupational disease, is characterized by progressive deterioration of pulmonary function and irreversible fibrosis resulting from crystalline silicon dioxide or silica *** pieces of evidence[1-3]manifest that inhaled silica particles could directly or indirectly cause excess generation of reactive oxygen species(ROS),which plays a key role in the pathogenesis of *** order to maintain the cellular redox balance,the main function of thioredoxin(Trx)/thioredoxin reductase(TrxR)systems is to scavenge the ROS. TrxR, as a reductase of Trx currently known only,has the function of antioxidation and scavenging free radicals[4].In addition, recent in vitro studies demonstrate that Trx interacts directly with and inhibits the activity of apoptosis-regulating kinase-1(ASK-1)[5].The damaged cell of lung tissue caused by ROS may be an important link to ASK-1 triggered cell *** et al.[1] reported that silica could aggravate oxidative stress and promote the development of silicosis in rat lungs after silica exposure by downregulating the expression of TrxR and poor Trx activity. The specific mechanism of imbalance of reduction/oxidation status in silicosis is poorly *** previous studies[6]demonstrated that oxidative stress in rats induced by silica leads to increased peroxiredoxins(Prxs) protein reactivity to resist oxidative stress, and Trx as an electron donor is functionally associated with Prxs. Hence, we propose a hypothesis that silica exposure may lead to the disturbance of the function of the Trx/TrxR system,contributing to further oxidative damage.

关键词： oxidative irreversible maintain

Biotransformation ofα-asarone by Alternaria longipes CGMCC 3.2875

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Chinese Journal of Natural Medicines 2021年第9期19卷 700-705页

作者： ZOU Jian ZHANG Shuai ZHAO Huan wang yong-heng ZHOU Zheng-Qun CHEN Guo-Dong HU Dan LI Ning YAO Xin-Sheng GAO Hao Institute of Traditional Chinese Medicine&Natural Products College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents ofTCM and New Drugs ResearchJinan UniversityGuangzhou 510632China College of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016China College of Traditional Chinese Medicine Jinan UniversityGuangzhou 510632China Integrated Chinese and Western Medicine Postdoctoral Research Station Jinan UniversityGuangzhou 510632China

Biotransformation ofα-asarone by Alternaria longipes CGMCC 3.2875 yielded two pairs of new neolignans,(+)(7 S,8 S,7’S,8’R)iso-magnosalicin(1 a)/(-)(7 R,8 R,7’R,8’S)iso-magnosalicin(1 b)and(+)(7 R,8 R,7’S,8’R)magnosalicin(2 a)/(-)(7 S,8 S,7’R,8’S)magnosalicin(2 b),and four known metabolites,(±)acoraminol A(3),(±)acoraminol B(4),asaraldehyde(5),and 2,4,5-trimethoxybenzoic acid(6).Their structures,including absolute configurations,were determined by extensive analysis of NMR spectra,X-ray crystallography,and quantum chemical ECD *** cytotoxic activity and Aβ_(42)aggregation inhibitory activity of all the compounds were *** 2 displayed significant anti-Aβ_(42)aggregation activity with an inhibitory rate of 60.81%(the positive control EGCG:69.17%).In addition the biotransformation pathway ofα-asarone by Alternaria longipes CGMCC 3.2875 was proposed.

关键词： Biotransformation α-Asarone Alternaria longipes CGMCC 3.2875 Anti-Aβ_(42)aggregation activity

Duodenal pseudolymphoma: A case report and review of literature

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World Journal of Gastroenterology 2011年第27期17卷 3267-3270页

作者： yong-heng Huang, Tian-Zhu Long, Zhi-Yu Xiao, Hua Ye, Yun-Le Wan, Jie wang yong-heng Huang, Tian-Zhu Long, Zhi-Yu Xiao, Hua Ye, Yun-Le Wan, Jie wang, Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University Haizhu District, Guangzhou 510260, Guangdong Province, China Department of Hepatobiliary Surgery Sun Yat-sen Memorial Hospital Sun Yat-sen University Haizhu District Guangzhou 510260 Guangdong Province China.

We report a rare case of duodenal pseudolymphoma without any symptoms. The lesion located in front of the head of the pancreas was found accidentally during a medical examination. The findings of computed tomography and positron emission tomography-computed tomography suggested a stromal tumor or malignant lymphoma. Surgical resection was performed. The lesions were patho- logically diagnosed as duodenal pseudolymphoma.

关键词： Pseudolymphoma Duodenum

Maximum Likelihood Method of Maintainability Growth Evaluation for Weapon Equipment

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International Journal of Plant Engineering and Management 2009年第4期14卷 202-205页

作者： wang yong-jie ZHANG heng-xi SHU Wen-jun ZHANG Xi-bin Engineering College Air Force Engineering University Xiran 710038 P.R. China

The evaluation of maintainability growth plays an important role in improving materiel system effectiveness. Based on field maintenance information, a maximum likelihood model is put forward to evaluate the maintainability growth at the system level and sub-system level. A maximum likelihood function can be built after all the maintenance data can be divided into the following three categories： incomplete repair time data, complete repair time data, super-complete repair time data. According to the actual situation of the maintenance data, an appro- priate approximation can be made and the approximate analytical solution can be obtained. The values of u and can be obtained as the corresponding estimated value of unknown parameters. By effectively mining the latent sampie information, the maintainability growth evaluation is logical and reasonable.

关键词： maintainability growth maximum likelihood evaluation repair

Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie wang Wei wang Xuheng Chen Junfang Bao Qiuyue Hao heng Zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

Silk damping in scalar-induced gravitational waves: a novel probe for new physics

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 79-85页

作者： Yan-heng Yu Sai wang Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences

Silk damping is well known in the study of cosmic microwave background（CMB） and accounts for suppression of the angular power spectrum of CMB on large angular multipoles. In this article, we study the effect of Silk damping on the scalar-induced gravitational waves（SIGWs）. Resulting from the dissipation of cosmic fluid, the Silk damping notably suppresses the energydensity spectrum of SIGWs on scales comparable to a diffusion scale at the decoupling time of weakly-interacting particles. The effect offers a novel observable for probing the underlying particle interaction, especially for those mediated by heavy gauge bosons beyond the standard model of particles. We anticipate that pulsar timing arrays are sensitive to gauge bosons with mass ～10～3-10～4 GeV, while space-and ground-based interferometers to those with mass ～10～7-1012GeV, leading to essential complements to on-going and future experiments of high-energy physics.

关键词： scalar-induced gravitational waves Silk damping new physics

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喷水推进船避免喷泵气蚀的仿真研究

中国造船 2010年第1期51卷 55-62页

作者：黄斌王永生海军工程大学船舶与动力学院武汉430033

为了解决喷水推进船在各种工况下,喷泵工作在气蚀区的问题,利用Simulink与MFC(Microsoft Foundation Class)集成的方法开发出了可用于制定喷水推进装置在回转、加速等工况下,避免喷泵在空化区运行的工作制的仿真程序。利用开发出的仿真... 详细信息

为了解决喷水推进船在各种工况下,喷泵工作在气蚀区的问题,利用Simulink与MFC(Microsoft Foundation Class)集成的方法开发出了可用于制定喷水推进装置在回转、加速等工况下,避免喷泵在空化区运行的工作制的仿真程序。利用开发出的仿真程序对特定工况下的最大柴油机转速、最大喷泵转角以及最短加速时间做了仿真计算。该计算结果对喷水推进艇避免喷泵气蚀的操作规程有一定的参考价值。

关键词：喷水推进数学模型仿真混合编程

改性Cu-Pd双金属电极电化学还原硝酸盐性能研究

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中国环境科学 2023年第10期43卷 5296-5307页

作者：王畅刘吉明王永恒逯新宇太原理工大学环境科学与工程学院山西太原030024

为揭示高盐废水中电催化还原硝酸盐氮的能力,采用阴极电沉积法成功制备了NF/CNTs/Cu-Pd双金属复合电极.通过SEM-EDS、XRD和XPS表征,证实CuPd纳米颗粒成功沉积在泡沫镍(NF)底板上.研究了电流密度、初始pH值、初始硝酸盐浓度和Cl^(-)浓度... 详细信息

为揭示高盐废水中电催化还原硝酸盐氮的能力,采用阴极电沉积法成功制备了NF/CNTs/Cu-Pd双金属复合电极.通过SEM-EDS、XRD和XPS表征,证实CuPd纳米颗粒成功沉积在泡沫镍(NF)底板上.研究了电流密度、初始pH值、初始硝酸盐浓度和Cl^(-)浓度等因素对模拟水中NO_(3)^(-)-N、TN的去除能力的影响,并用实际高盐废水验证了其可行性.结果表明:没有Cl^(-)存在情况下,NF/CNTs/Cu-Pd可有效去除NO_(3)^(-)-N,但TN去除能力一般,NO_(3)^(-)-N主要转化为NH_(4)^(+)-N.有Cl^(-)存在作用下,NO_(3)^(-)-N、TN得到有效去除.反应最佳条件为:电流密度30mA/cm^(2),初始pH值7,初始浓度50mg/L,氯离子浓度2.0g/L,此时NO_(3)^(-)-N、TN去除率分别达到100%和97.2%.实际废水中溶解性有机物(DOM)会抑制NO_(3)^(-)-N去除.DOM去除后,NO_(3)^(-)-N去除率为95.5%,TN去除率达到85.6%.

关键词：硝酸盐还原 NF/CNTs/Cu-Pd电极电沉积高盐废水