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四川省连续玄武岩纤维矿石原料研究现状

中国非金属矿工业导刊 2024年第1期 16-19页

作者：蒲猛彭秀红冯鑫陈程成都理工大学地球科学学院四川成都610059 地学核技术四川省重点实验室(成都理工大学) 四川成都610059

近年来连续玄武岩纤维凭借绿色的生产工艺和优异的性能得到国内外广泛关注,但玄武岩原料不均一性成为限制其发展的重要原因。四川省玄武岩储量巨大,在会理、峨眉、盐源等地广泛分布,具有极大的应用潜力与经济价值。但各地玄武岩化学组... 详细信息

近年来连续玄武岩纤维凭借绿色的生产工艺和优异的性能得到国内外广泛关注,但玄武岩原料不均一性成为限制其发展的重要原因。四川省玄武岩储量巨大,在会理、峨眉、盐源等地广泛分布,具有极大的应用潜力与经济价值。但各地玄武岩化学组成变化大且当前对玄武岩矿石的质量评价标准尚不统一,影响了玄武岩纤维的开发利用。通过总结省内连续纤维用玄武岩原料研究现状,对不同地区玄武岩矿石的岩石特征、矿物特征与化学组成进行梳理,分析国内外部分生产企业及研究人员采用的玄武岩化学成分指标,为四川玄武岩纤维原料筛选服务。研究表明用作玄武岩纤维原料的矿石以致密块状玄武岩为主,部分斑状玄武岩为辅以及少量细粒辉长岩;多具斑状结构,基质具间粒间隐结构,块状构造;化学成分变化范围大,多具高Fe低碱特征。

关键词：连续玄武岩纤维矿石原料矿石特征评价体系

Lymph node regression grading of locally advanced rectal cancer treated with neoadjuvant chemoradiotherapy

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World Journal of Gastrointestinal Oncology 2022年第8期14卷 1429-1445页

作者： Lei He Juan xiao Ping Zheng Lei Zhong Qian peng School of Medicine University of Electronic Science and Technology of ChinaChengdu 611731Sichuan ProvinceChina Department of Pathology Sichuan Cancer Hospital&InstituteSichuan Cancer CenterSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengdu 610041Sichuan ProvinceChina Personalized Drug Therapy Key Laboratory of Sichuan Province Sichuan Academy of Medical Sciences and Sichuan Provincial People’s HospitalChengdu 610072Sichuan ProvinceChina Radiation Therapy Center Sichuan Cancer Hospital&InstituteSichuan Cancer CenterSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengdu 610041Sichuan ProvinceChina

Neoadjuvant chemoradiotherapy(nCRT)and total rectal mesenteric excision are the main standards of treatment for locally advanced rectal cancer(LARC).Lymph node regression grade(LRG)is an indicator of prognosis and response to preoperative nCRT based on postsurgical metastatic lymph node *** histopathological findings in metastatic lymph nodes after nCRT include necrosis,hemorrhage,nodular fibrosis,foamy histiocytes,cystic cell reactions,areas of hyalinosis,residual cancer cells,and pools of mucin.A number of LRG systems designed to classify the amount of lymph node regression after nCRT is mainly concerned with the relationship between residual cancer cells and regressive fibrosis and with estimating the number of lymph nodes existing with residual cancer *** offers significant prognostic information,and in most cases,LRG after nCRT correlates with patient *** this review,we describe the systematic classification of LRG after nCRT,patient prognosis,the correlation with tumor regression grade,and the typical histopathological findings of lymph *** work may serve as a reference to help predict the clinical complete response and determine lymph node regression in patients based on preservation strategies,allowing for the formulation of more accurate treatment strategies for LARC patients,which has important clinical significance and scientific value.

关键词： Lymph node regression grade Histopathological Rectal cancer Chemoradiotherapy Treatment response Neoadjuvant therapy

Constraints on the diversity of crude oil types in the Lunnan Oilfield,Tarim Basin,NW China

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Chinese Science Bulletin 2004年第S1期49卷 19-26页

作者： LU Hong JIA Wanglu xiao Zhongyao SUN Yongge peng Ping’an State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Tarim Research Institute of Exploration and Development of Petroleum China PetroleumKuerle 841000China

Hydrocarbons, include heavy oils, normal oils, waxy oils and light oils, condensate oils and gases were all found in Lunnan Oilfield, the occurrences of hydrocarbons with complicated physical properties indicates a complicated distribution of reservoirs. By the drilling data, the distribution pattern had been found that, in plan view, the density of crude oils in the western part is heavier than that of oils in the eastern part in Lunnan region, namely the crude oils were mainly found in the western part while the natural gases were mainly found in the eastern, which shows that an obvious differentiation in the east and west part was presented in the Lunnan region. Furthermore, in vertical view, the light hydrocarbons were mainly found in the Carboniferous reservoir while the heavier hydrocarbons were mainly found in the Ordovician and Triassic reservoirs. By analysis of the semi-logarithm distribution of n-alkanes, biomarker ratios and stable carbon isotopic compositions of crude oils, we have found

关键词： mixing differentiation in eastern and western part oil family light oil high waxy oil semi-logarithm distribution of n-alkanes.

Optical Third Harmonic Generation in Methane

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Chinese Physics Letters 1997年第10期14卷 740-743页

作者： WANG peng-qian XIE xiao-bo SUN Tao-heng Department of Physics Peking UniversityBeijing 100871

Methane has been used as a nonlinear optical medium to produce tunable coherent vacuum ultraviolet and extreme ultraviolet radiation.A vibrational structure with a vibrational frequency of 820cm^(-1) was observed in a highly resolved third harmonic *** proved that third harmonic generation is an effective method to probe the higher excited states of molecular gases.

关键词： tunable ultraviolet harmonic

Enantioselective Total Synthesis of Four Styrylpyrone Derivatives

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Chinese Chemical Letters 2002年第6期13卷 519-520页

作者： xiao Shui peng An Pai LI Tong Xing WU Xin Fu PAN Department of Chemistry&National Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000

The first enantioselective total synthesis of 5-acetoxygoniothalamin 1 and 5-acetoxyisogoniothalamin oxide 2 was achieved through the Sharpless kinetic resolution of racemic secondary 2- furylmethanol 5 and the Mitsunobu reaction. At the same time we developed a short synthetic route for 6R-(+)-goniothalamin 3 and (6R, 7R, 8R)-(+)-goniothalamin oxide 4. And according to this route the configuration of 5-acetoxygoniothalamin 1 was confirmed as (5S, 6S).

关键词： Enantioselective 5-acetoxygoniothalamin 5-acetoxyisogoniothalamin oxide 6R-(+)- goniothalamin (6R, 7R, 8R)-(+)-goniothalamin oxide.

Spatial and spectral investigation of turbulent kinetic energy in cavitating flow generated by Clark-Y hydrofoil

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Journal of Hydrodynamics 2020年第1期32卷 175-178页

作者： xiao-rui Bai Huai-yu cheng Bin Ji Xin-ping Long State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China Science and Technology on Water Jet Propulsion Laboratory Shanghai 200011China

In the present paper,the turbulent cavitating flow generated by a Clark-Y hydrofoil is investigated by large eddy simulation(LES)combined with Zwart-Gerber-Belamri(ZGB)cavitation *** order to shed light on the influence of cavitation on turbulent energy distribution among scales,energy spectrum obtained from the three-dimensional velocity field is firstly applied to turbulent cavitating *** and spectral distributions of turbulent kinetic energy are studied for both non-cavitating flow and cavitating *** is found to have a significant effect on the original turbulent flow by inducing more large-scale turbulent *** energy spectrum of cloud cavitating flow also experiences a periodic evolution as cavitation develops,and a large amount of turbulent kinetic energy is found to generate as the first shedding,cutoff and second shedding of cavities happen.

关键词： Cavitating flow energy spectrum large eddy simulation(LES) turbulent kinetic energy cloud cavitation

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What limits limits?

National Science Review 2021年第1期8卷 11-14页

作者： Yong-Chun Liu Kun Huang Yun-Feng xiao Lan Yang cheng-Wei Qiu State Key Laboratory of Low-Dimensional Quantum Physics Department of Physics Frontier Science Center for Quantum Information Tsinghua University Department of Optics and Optical Engineering University of Science and Technology of China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of Physics Peking University Department of Electrical and Systems Engineering Washington University Department of Electrical and Computer Engineering National University of Singapore

There are fundamental rules and principles setting the limits of physical systems. It triggers an interesting thought—can we break the limits under specific circumstances? A realistic system can only provide limited functionalities because its performance is physically constrained by some fundamental principles.‘Breaking the limit’, which usually implies that the capability of a system could be enhanced significantly,

关键词： CAVITIES

Deformation mechanism of commercially pure titanium under biaxial loading at ambient and elevated temperatures

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Journal of Materials Science & Technology 2022年第31期126卷 237-251页

作者： Yuanjie Fu Yao cheng Yun Cui Yunchang Xin Yuyao Zeng xiao Liu Gang Chen School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Key Laboratory for Light-weight Materials Nanjing Tech UniversityNanjingJiangsu 210009China School of Chemical Engineering and Technology Tianjin Ren’ai CollegeTianjin 301636China Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology Tianjin 300350China Zhejiang Institute of Tianjin University NingboZhejiang 315201China Nuclear Power Institute of China ChengduSichuan 610015China

Commercially pure(CP)titanium is thermally processed and subjected to biaxial ***,the evolution of the microstructural deformation mechanisms under such circumstances is not adequately *** this study,the mechanical responses and microstructural deformation mechanisms of TA2 CP titanium sheets under equi-biaxial loading at room temperature(RT),300℃,and 400℃were *** activated slip and twinning systems were investigated by transmission electron microscopy(TEM)after polished cruciform specimens were biaxially tensile-tested at RT and elevated *** results show that{11¯22}contraction twinning and{10¯12}extension twinning are the main deforma-tion mechanisms of RT biaxial deformation,while dislocation glide is predominant in biaxial deformation at 300℃and 400℃.This difference yields varied work-hardening behaviors at RT and elevated *** biaxial deformation at 400℃,the main slip trace type is multiple *** interaction of different slip systems in multiple slip created shear deformation concentration areas and further induced ***,in biaxial deformation at 300℃,the amounts of simplex and multiple slip were significantly reduced compared to those at 400℃because the lower temperature increased the critical resolved shear stress and insufficient activated slip systems were available for grain ***-fore,several stress-concentration areas were generated with the activation of cross-slip.

关键词： CP titanium Biaxial tensile tests High temperature Dislocation glide TEM

Covalent Organic Frameworks(COFs) for Sequestration of ^(99)TcO_(4)^(–)

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Chemical Research in Chinese Universities 2022年第2期38卷 290-295页

作者： DI Zhengyi MAO Yining YUAN Heng ZHOU Yan JIN Jun LI cheng-peng College of Chemistry Tianjin Key Laboratory of Structure and Performance for Functional MoleculesTianjin Normal UniversityTianjin 300387P.R.China

Covalent organic frameworks(COFs),as a class of crystalline porous materials with periodic lattices and porous structures,have received extensive attention in the fields of gas storage and separation,energy storage,catalysis and optoelectronics and so ***,COFs are still in their infancy in the field of nuclear waste treatment,especially for sequestration of long-live problematic radionuclides,such as *** of decontamination of pertechnetate(TcO4–),a main existence of 99Tc under aerobic environments,is far from *** this review,recent progresses of COFs and some relative materials in the sequestration of pertechnetate,and perspective on surmounting the unmet issues are elucidated.

关键词： Covalent organic framework(COF) Radionuclide sequestration 99TcO4– Adsorption Anion exchange