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盐边县温泉井田煤质特征及用途评价

煤炭技术 2025年第1期44卷 120-124页

作者：牟文阳伟唐晓林四川省能源地质调查研究所成都610072

盐边县温泉井田的地质勘查程度已经不能满足中型矿井开采的可行性研究,因此,需要对该地区的煤质特征及工艺性能进行进一步研究。温泉井田主要含煤地层为上三叠统大荞地组,煤层结构简单,共含可采煤层7层(全区可采3层,局部可采4层),各煤... 详细信息

盐边县温泉井田的地质勘查程度已经不能满足中型矿井开采的可行性研究,因此,需要对该地区的煤质特征及工艺性能进行进一步研究。温泉井田主要含煤地层为上三叠统大荞地组,煤层结构简单,共含可采煤层7层(全区可采3层,局部可采4层),各煤层平均厚度0.41~0.83 m。宏观煤岩组分以半暗煤为主,次为半亮煤;多呈不规则的细-中条带状、线理状产出。显微组分以镜质组为主,有机显微组分含量较高,灰分变化大,硫分、水分低、浮煤挥发分含量高,发热量大;流动温度、软化温度均以中等程度为主,煤灰成分主要为SiO_(2)、Al_(2)O_(3)和Fe_(2)O_(3),煤对二氧化碳的反应性与温度呈正相关,而煤灰黏度与温度呈负相关。因此,综合认为温泉井田主要可采煤层属低-中灰、特低硫-低硫、中高-高发热量的煤,主要利用方向可作为优质炼焦配煤,用于生产冶金焦炭。

关键词：盐边县井田煤质特征优质炼焦配煤

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Effect of Thermomechanical Controlled Processing Parameters on Microstructure and Properties of Q460q Steel

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Journal of Iron and Steel Research International 2010年第1期17卷 38-43页

作者： WANG Lei GAO Cai-ru WANG Yan-feng JIN wen-zhong ZHAO De-wen LIU Xiang-hua State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China Shougang Research Institute of Technology Beijing 100041 China Shanghai Shenhua AcousticsEquipment Co Ltd Shanghai 201709 China

With tensile test, impact test, and optical microscopy, the effect of thermomechanical controlled processing （TMCP） parameters on the microstructure and properties of Q460 steel was studied and analyzed. The TMCP parameters for Q460q steel were optimized by laboratory experiments, and then, industrial trial was carried out. The result indicated that the microstructure and properties of the Q460q steel in industrial trial were in agreement with the results obtained in laboratory experiments and could meet the national standard of Q460q steel.

关键词： TMCP mechanical property M/A constituent Q460q steel

THE IMPACT OF HUMAN ACTIVITIES ON GROUNDWATER RESOURCES IN THE SOUTH EDGE OF TARIM BASIN, XINJIANG

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Chinese Geographical Science 2002年第1期12卷 50-54页

作者： MAJin－zhu LAITian－wen 等 CollegeofResources＆Environment LanzhouUniversityLanzhou730000P.R.China SchoolofCivilConstruction LanzouRailwayUniversityLanzhou730070P.R.China

In the modern times, the population growth, development of industrial andagricultural production and the petroleum exploitation, brought about the unceasing expansion ofartificial oasis and abrupt increase of water demand. The artificial hydraulic irrigationengineering took the place of the natural river system, the reservoirs took the place of naturallakes, which in turn enhanced the space-time redistribution of surface water based on the naturalevolution, and so did groundwater: The groundwater recharge reduced 26. 2% in 46 years from 1950 to1995 in the southern piedmont flood plain of Tarim Basin due to mean yearly population increase rateof 27. 7 per thousand and associated with the water use rate increasing from 24. 6% to 58. 4%. Atthe same time the artificial water system seepage give primary play to groundwater recharge, whichis up to 57. 6% whilst that of the natural system reduce to 33.7%. As a result, groundwater leveldrop 3 - 5m widespread except some irrigation area and surroundings of plain reservoir. Spring waterdischarge also reduce about 37. 6% and discharge zone continuously move away to the north with thevalue of 0. 5 - 1. 2km in the past 40 years.

关键词： human activities groundwater resources recharge tarim basin

Temporal trends in the prevalence of major birth defects in China:a nationwide population-based study from 2007 to 2021

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世界儿科杂志（英文版） 2024年第11期20卷 1145-1154页

作者： wen-Yan Li Zhi-Yu Chen wen-Li Xu Yu-Yang Gao Zhen Liu Qi Li Li Dai National Center for Birth Defects Monitoring West China Second University HospitalSichuan UniversityChengdu 610041SichuanChina National Center for Birth Defects Monitoring West China Second University HospitalSichuan UniversityChengdu 610041SichuanChina Key Laboratory of Birth Defects and Related Diseases of Women and Children Ministry of EducationSichuan UniversityNo.17 Section 3 RenminnanluChengdu 610041China The Joint Laboratory for Pulmonary Development and Related Diseases West China Second University HospitalSichuan UniversityChengdu 610041China NHC Key Laboratory of Chronobiology Sichuan UniversityChengdu 610041SichuanChina Med-X Center for Informatics Sichuan UniversityChengdu 610041SichuanChina

Background Birth defects constitute a significant public health issue worldwide,yet there is a lack of comprehensive population-based data for the Chinese population.Methods We analyzed data from the China National Population-based Birth Defects Surveillance System from 2007 to 2021,we calculated the prevalence rates of selected birth defects,stratified by maternal residence,geographic region,maternal age,and infant *** Joinpoint regression model was utilized to assess trends and annual percent changes in prevalence.Results From 2007 to 2021,significant downward trends in prevalence were observed for neural tube defects(NTDs),hydro-cephalus,cleft lip with or without palate(CL/P),limb reduction defects(LRD),omphalocele,Down syndrome,and tetralogy of Fallot(TOF).Conversely,upward trends were identified for hypospadias,cleft palate(CP),microtia/anotia,polydactyly,syndactyly,ventricular septal defect(VSD),atrial septal defect/patent foramen ovale(ASD/PFO),and patent ductus arte-riosus(PDA).Younger mothers exhibited a higher prevalence of hydrocephalus,gastroschisis,CL/P,and polydactyly,while anotia/microtia,Down syndrome,and congenital heart diseases(CHDs)were more common in mothers aged 35 years or *** variations in the prevalence of anencephalus,spina bifida,CL/P,anorectal atresia/stenosis,hypospadias,polydactyly,syndactyly,VSD,ASD/PFO,and PDA were found across different maternal residences and geographic regions.Conclusion This study highlights the diverse trends and prevalence patterns of major birth defects,underscoring the neces-sity for defect-specific public health interventions.

关键词： Birth defects China Epidemiology Prevalence Trend

Exploring the nature of black hole and gravity with an imminent merging binary of supermassive black holes

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Science China(Physics,Mechanics & Astronomy) 2023年第3期66卷 76-87页

作者： Xingyu Zhong wen-Biao Han Ziren Luo Yueliang Wu Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Taiji Laboratory for Gravitational Wave Universe(Beijing/Hangzhou) University of Chinese Academy of SciencesBeijing 100049China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310124China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China Shanghai Frontiers Science Center for Gravitational Wave Detection Shanghai 200240China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China International Centre for Theoretical Physics Asia-Paciﬁc University of Chinese Academy of SciencesBeijing 100190China Key Laboratory of Gravitational Wave Precision Measurement of Zhejiang Province Hangzhou 310124China

A supermassive binary black-hole candidate SDSS J1430+2303 reported recently motivates us to investigate an imminent binary of supermassive black holes as potential gravitational wave source, and the radiated gravitational waves at the end of the merger are shown to be in the band of space-borne detectors. We provide a general analysis on the required detecting sensitivity needed for probing such type gravitational wave sources and make a full discussion by considering two typically designed configurations of space-borne antennas. If a source is so close, it is possible to be detected with Taiji pathfinder-plus which is proposed to be an extension for the planned Taiji pathfinder by just adding an additional satellite to the initial two satellites. The gravitational wave detection on such kind of source enables us to explore the properties of supermassive black holes and the nature of gravity.

关键词： gravitation wave SMBHBs Taiji pathfinder

Brownian Ratchet Driven by a Rocking Forcing with Broken Temporal Symmetry

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Communications in Theoretical Physics 2003年第2期39卷 173-176页

作者： LIUFeng－Zhi LIXiao－wen 等 DepartmentofPhysics XuzhouNormalUniversityXuzhou221009China DepartmentofPhysics BeijingNormalUniversityBeijing100875China DepartmentofPhysics BeijingNormalUniversityBeijing100875

The ratchet motion of a Brownian particle in a symmetric periodic potential under a rocking force thatbreaks the temporal symmetry is studied. As long as the relaxation time in the thermal background is much shorter thanthe forcing period, the unidirectional transport can be analytically treated. By solving the Fokker-Planck equations, weget an analytical expression of the current. This result indicates that with an appropriate match between the potentialfield, the asymmetric ac force and the thermal noise, a net current can be achieved. The current versus thermal noiseexhibits a stochastic-resonance-like behavior.

关键词： Brownian ratchet directed transport stochastic resonance Fokker-Planck equation

Numerical Analysis of Multilayer Waveguides Using Effective Refractive Index Method

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Communications in Theoretical Physics 2003年第3期39卷 327-330页

作者： GAOShao－wen CAOJun－Cheng 等 StateKeyLaboratoryofFunctionalMaterialsforInformatics ShanghaiInstituteofMicrosystemandInformationTechnologytheChineseAcademyofSciencesShanghai200050China StateKeyLaboratoryof

With the help of the effective refractive index method we have numerically analyzed a multilayer planar waveguide structure and calculated the propagation constants, confinement factors, and transverse electric (TE) modes. A five-layer waveguide model has been provided to analyze the electro-magne tic wave propagation process. The analysis method has been applied to the 980 nm laser with active layer of GaInAs/GaInAsP strained quantum wells, GaInAsP confinement layers and GaInP cap layers. By changing the thickness of confinement layers, we obtained confinement factor as high as 95% with higher TE modes TE1 and TE2. The results are in good agreement with the experiment by A. Al-Muhanna et al. and give the new idea to enhance output power of semiconductor lasers. The analysis method can also be extended to any other slab multilayer waveguide structures, and the results are useful to the fabrication of optic-electronic devices.

关键词： multilayer waveguides semiconductor laser

High-grade myofibroblastic sarcoma in the liver: A case report

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World Journal of Gastroenterology 2017年第38期23卷 7054-7058页

作者： Jun wen Wei Zhao Chuan Li Jun-Yi Shen Tian-Fu wen Department of Liver Surgery and Liver Transplantation Center West China Hospital Sichuan University Department of General Surgery The Third People’s Hospital of Chengdu Department of Pathology West China Hospital Sichuan University

Only two cases of myofibroblastic sarcoma in the liver have been reported in the literature. Here, we report the case of a male patient with high-grade myofibroblastic sarcoma mimicking echinococcosis in the liver. The 25-year-old male patient complained of right upper quadrant swelling pain for one week and was initially diagnosed with echinococcosis. He was then scheduled for an exploratory laparotomy. During the operation, a huge mass exceeding 16 cm in diameter was found to occupy nearly the entire right trisegment of the liver, with a clear boundary and a round shape, and the mass was resected by right hepatic trisegmentectomy. Immunohistochemical staining revealed that the tumor tissue was positive for desmin, alpha-smooth muscle actin, CD56, and vimentin and negative for ALK-1, myogenin, calponin, beta-catenin, S100, and glypican-3, with a Ki-67 (MIB-1) index of approximately 20%. Based on the histological manifestations and immunohistochemical staining, a diagnosis of myofibroblastic sarcoma was established. The postoperative recovery was uneventful. There was no evidence of recurrence or metastasis through the last follow-up, 6 mo after surgery, despite a lack of postoperative chemotherapy or radiotherapy. To the best of our knowledge, the present case is the first reported case of high-grade myofibroblastic sarcoma in the liver, and it is also the first reported case in a male patient.

关键词： Myofibroblastic sarcoma Liver High-grade Male Immunohistochemical staining

An Adaptive Hybrid Optimization Strategy for Resource Allocation in Network Function Virtualization

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Computer Modeling in Engineering & Sciences 2024年第2期138卷 1617-1636页

作者： Chumei wen Delu Zeng School of Mathematics South China University of TechnologyGuangzhou510640China School of Electronic and Information Engineering South China University of TechnologyGuangzhou510640China

With the rapid development of Network Function Virtualization(NFV),the problem of low resource utilizationin traditional data centers is gradually being ***,existing research does not optimize both localand global allocation of resources in data ***,we propose an adaptive hybrid optimization strategy thatcombines dynamic programming and neural networks to improve resource utilization and service quality in *** approach encompasses a service function chain simulation generator,a parallel architecture servicesystem,a dynamic programming strategy formaximizing the utilization of local server resources,a neural networkfor predicting the global utilization rate of resources and a global resource optimization strategy for bottleneck andredundant *** the implementation of our local and global resource allocation strategies,the systemperformance is significantly optimized through simulation.

关键词： NFV resource allocation decision-making optimization service function