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NaAlSi_3O_8-hollandite and other high-pressure minerals in the shock melt veins of the Suizhou meteorite

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chinese Science Bulletin 2001年第13期46卷 1121-1126页

作者： xie {1., chen ming, WANG Deqiang & El Goresy A.1.guangzhou institute of geochemistry, chinese academy of sciences, guangzhou 510640, china 2. Max-Planck-institute fur Chemie, 551.8 Mainz, Germany guangzhou {1. of geochemistry Chinese Academy of Sciences Guangzhou 510640 China Max-Planck-institute für Chemie 55128 Mainz Germany

The Suizhou L6 chondrite contains a few very thin shock melt veins of 0.02-0.09 mm in width. In spite of small width of the veins, shock-induced high-pressure phases, such as coarse-grained NaAlSi3O8-hollandite, ringwoodite, majorite and fine-grained matrix majorite-pyropess have been discovered in these veins. NaAlSi3O8-hollandite, the high-pressure phase of plagioclase, in Suizhou shock veins occurs as a single phase mineral, no silicate glassy phase, such as albitic glass, was incorporated with it. The presence of above-mentioned high-pressure phases constrains the high pressure (up to 23-24 GPa) and high temperature (up to 1.00-2000℃) regime in Suizhou shock veins, and indicates that the duration of high-pressure regime in the veins should be long enough (a few seconds) for phase transformation and crystallization of minerals under pressure. The discovery of the first natural single-phase crystalline NaAlSi3O8- holland-ite in Suizhou meteorite is of important significance in understanding the Earth’

关键词： high NaAlSi3O8-hollandite and other high-pressure minerals in the shock melt veins of the Suizhou meteorite

Boost VS_(2) electrochemical reactive kinetics by regulating crystallographic planes and coupling carbon matrix for high performance sodium-ion storage

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Rare Metals 2024年第1期43卷 98-112页

作者： Min Zeng ming-Shan Wang Lin {1. En-Zhi Li Zhen-Liang Yang Dan Zhou Hai-Jiao xie Jun-{1. {1. Zhi-Yuan Ma Bing-shu Guo Bo Yu Xing Li School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China Energy Storage Research institute Southwest Petroleum UniversityChengdu 610500China institute of Materials China Academy of Engineering PhysicsMianyang 621908China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and TechnologyBeijingBeijing 100083China Hangzhou Yanqu Information Technology Co. Ltd.Hangzhou 310003China

Vanadium disulfide(VS_(2)) as a typical two-dimensional transition metal chalcogenide has excellent competitiveness for sodium-ion storage due to its wide layer spacing(0.575 nm),high theoretical capacity of 932mAh·g^(-1. originating from multi-electron electrochemical ***,continuous sodiation process accompanied by crystal structural evolution and collapse cause rapid capacity ***,novel few-layer VS_(2)nanosheets with open(001. crystal planes are in-situ constructed on reduced graphene oxide to solve these issues mentioned *** indicates that few-layer VS_(2)provides more Na^(+) storage activity due to the low Na^(+)surface migration energy barrier on exposed crystal(001.*** flexible and high electronic conductivity of carbon matrix also effectively builds multi-level buffer structure and electron transport kinetics to boost the Na^(+)insertion/conversion reactive activity on VS_(2) as well as Na^(+) pseudocapacitance storage kinetics on edges and defects of nano *** coupling effects result in high rate capability and long cycling stability as a battery/capacitor *** delivers conspicuous high energy density of 81.and 40 Wh·kg^(-1. at power density of 1.8 and 1.,286W·kg^(-1.,as well as 80% energy retention rate after 5000cycles,confirming its great application potential in sodiumbased storage devices.

关键词： Vanadium disulfide Reduced graphene oxide Anode Sodium-ion battery Sodium-ion capacitor

Efficacy and safety of anlotinib combined with the STUPP regimen in patients with newly diagnosed glioblastoma: a multicenter, single-arm, phase Ⅱ trial

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Cancer Biology & Medicine 2024年第5期21卷 433-444页

作者： shuzhen Lai Peijing Li Xiaohui Liu Guihong Liu Tie{1. xie Xing Zhang Xiaoxuan Wang Jing Huang Yiqiang Tang Zhigang Liu Guoping Shen Chao{1. Li Fangxiao Lu Lei Wang Fagui Jiang Caixing Sun Yuanyuan chen {1. chen Department of Radiation Oncology The Second Affiliated Hospital of Soochow UniversitySuzhou 215000China Department of Radiation Oncology Yuebei People’s Hospital Affiliated to the Medical College of Shantou UniversityShaoguan 512026China Chinese Academy of SciencesHangzhou 310022China Department of Radiation Oncology The Second Clinical Medical College of Zhejiang Chinese Medical UniversityHangzhou 311403China Department of Radiation Oncology The Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221004China Chinese Academy of SciencesHangzhou 310022China State Key Laboratory of Translational Medicine and Innovative Drug Development Jiangsu Simcere Diagnostics Co.LtdNanjing 210000China Department of Radiation Oncology The Affiliated Huai’an First People’s Hospital of Nanjing Medical UniversityHuai’an 223399China Department of Radiation Oncology Jiangxi Cancer Hospital of Nanchang UniversityNanchang 330029China Department of Radiotherapy Dongguan Institute of Clinical Cancer ResearchDongguan Key Laboratory of Precision Diagnosis and Treatment for TumorsAffiliated Dongguan HospitalSouthern Medical UniversityDongguan 523059China The Cancer Center The Fifth Affiliated Hospital of Sun Yat-Sen UniversityZhuhai 519000China Department of Radiation Oncology The First Affiliated Hospital of Sun Yat-Sen UniversityGuangzhou 510080China Department of Oncology Maoming People’s HospitalMaoming 525000China Department of Radiation Oncology Kecheng District People’s HospitalQuzhou 324003China Chinese Academy of SciencesHangzhou 310022China Department of Radiation Oncology State Key Laboratory of Oncology in South ChinaSun Yat-sen University Cancer CenterGuangzhou 510060China United Laboratory of Frontier Radiotherapy Technology of Sun Yat-sen University&chinese {1. of sciences Ion Medical Technology Co. LtdGuangzhou 510060China

Objective:Glioblastomas are highly vascularized malignant *** determined the efficacy and safety of the anti-angiogenic multi-kinase inhibitor,anlotinib,for a newly diagnosed ***:This multicenter,single-arm trial(NCT041.9674)enrolled 33 treatment-naïve patients with histologically proven glioblastomas between March 201. and November *** underwent treatment with the standard STUPP regimen[fractionated focal irradiation in daily fractions of 1.8-2 Gy given 5 d/w×6 w(total=54-60 Gy)]or radiotherapy plus continuous daily temozolomide(TMZ)(75 mg/m^(2)of body surface area/d,7 d/w from the first to the last day of radiotherapy),followed by 6 cycles of adjuvant TMZ(1.0-200 mg/m^(2)×5 d during each 28-d cycle)plus anlotinib(8 mg/d on d 1.1. of each 3-w cycle for 2 cycles during concomitant chemoradiotherapy,8 maximal cycles as adjuvant therapy,followed by maintenance at 8 mg/*** primary endpoint was progression-free survival(PFS).Secondary endpoints included overall survival(OS)and adverse events(AEs).Results:Thirty-three patients received the planned *** median PFS was 1..9 months(95%CI,9.9-1..7 months)and the 1.-month PFS rate was 48.5%.The median OS was 1..4 months(95%CI,1..5-21.1.months)and the 1.-month OS rate was 81.8%.The most common AEs included hypertriglyceridemia[58%(n=1.)],hypoalbuminemia[46%(n=1.)],and hypercholesterolemia[46%(n=1.)]during concurrent chemoradiotherapy and leukopenia[73%(n=24)],hypertriglyceridemia[67%(n=22)],and neutropenia[52%(n=1.)]during adjuvant *** patients discontinued treatment due to ***1.HR,5.6;95%CI,1.3-23.7;P=0.021.and RP1.1.alterations(HR,1..1.95%CI,2.2-57.2;P=0.004)were associated with a significantly shorter ***:Anlotinib plus the STUPP regimen has promising anti-tumor activity against glioblastoma and manageable ***1.and RP1.1.alterations might be novel predictive biomarkers of the response to anlotinib.

关键词： Glioblastoma anti-angiogenesis multi-kinase inhibitor anlotinib temozolomide progression-free survival

High-pressure polymorph of TiO_2-Ⅱ from the Xiuyan crater of china

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chinese Science Bulletin 2013年第36期58卷 4655-4662页

作者： chen {1. GU XiangPing xie xiande YIN Feng State Key Laboratory of Isotope geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Geosciences and Info-Physics Central South University Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences

Abundant TiO2-Ⅱ,a high-pressure polymorph of titanium dioxide,was found in the gneiss fragments of impact-produced breccias from the Xiuyan *** in the gneiss was severely fragmented and fine-grained clasts less than 2 m in size had been transformed to *** thin layered TiO2-Ⅱ is also observed in coarse-grained rutile fragments,where the TiO2-Ⅱ layers distributes along fractures and cracks in *** 30 percent of rutile in the gneiss had been transformed to TiO2-Ⅱ.Fine grains of TiO2-Ⅱ display light bluish grey to light yellow brown in plane-polarized reflected *** investigation shows that TiO2-Ⅱ has an orthorhombic structure with space group *** cell parameters are a=4.543(1.,b=5.491.9)and c=4.895(2).Its empirical formula calculated on the basis of two oxygen atoms can be written as(Ti0.985Fe0.008Nb0.006-Si0.003Zr0.001.1.003O2,or simply formula *** to the shock effects of quartz and feldspars,the peak shock pressure and post-shock temperature in the TiO2-Ⅱ-bearing gneiss are estimated to be between 35 and 43 GPa and 300–900°C,*** finding of TiO2-Ⅱ in the shock-metamorphosed gneiss provides another mineral physics evidence for shock origin of the Xiuyan crater.

关键词：陨石坑纳米岫岩高压二氧化钛中国经验公式平面偏振光

Functional Replacement of the FabD Protein of Escherichia coli Fatty Acid Synthesis by Eimeria tenella MCAT Homologue

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Functional Replacement of the FabD Protein of Escherichia co...

xieite,a new mineral of high-pressure FeCr_2O_4 polymorph

中国畜牧兽医学会家畜寄生虫学分会第六次代表大会暨第十次学术研讨会

作者： Sun ming-fei~(1.2),Zhu Guan~3,Qin Zong-hua~(1.2),Yuan Jian-feng~(1.2),Yu Jin-{1.~(1.2),Lv Min-na~(1.2), Wu Cai-yan~(1.2),xie ming-quan~(1.2),Cai Jian-ping~(1.2) (1.institute of Veterinary Medicine,Guangdong academy of Agricultural sciences,guangzhou,510640 2.Guangdong Common Lab of Veterinary Public Health,guangzhou,510640 3.Lab of Molecular Parasitology,School of Veterinary and Biomedicine Science,Texas A&M University,USA)

TypeⅡfatty acid biosynthetic system is an essential process for bacteria,apicomplexans and some plants ***,Escherichia coli provides the paradigm for the ***,little was known about the fatty acid metabolism in Eimeria spp(apicomplexans).Here,we report a *** homologous gene(EtMCAT) to *** fabD,the protein shows 37%homology to *** FabD amino acid sequence in the coding region for the mature ***,the predicted structure of EtMCAT is similar to *** FabD crystal structure except for a few differences in secondary structure *** replacement of fabD gene with amber mutation of *** temperature-sensitive LA2-89 strain by *** MCAT homologue using homologous recombination with suicide plasmid pDS1.2,the transgenic *** strain which fabD gene with an amber mutation was replaced by cDNA encoding mature *** MCAT could restore growth at non-permissive temperature(39℃).The results demonstrated the functional complementation and direct function of *** our knowledge,this is the first functional evidence supporting the identification of *** cDNA for MCAT.

关键词： Eimeria tenella Escherichia coli TypeⅡfatty acid biosynthetic Homologous gene Functional replacement Malonyl-CoA:ACP transacylase

来源： cnki会议评论

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chinese Science Bulletin 2008年第21期53卷 3341-3345页

作者： chen {1. shu jinfu MAO Ho-kwang guangzhou {1. of geochemistry Chinese Academy of Sciences Guangzhou 510640 China Geophysical Laboratory Carnegie Institution of Washington 5251 Broad Branch Road NW 20015 Washington DC USA

xieite,a new mineral,occurs in the shock vein of the Suizhou *** mineral has an ortho-rhombic structure and its space group is *** cell parameters are a = 9.462(6),b = 9.562(9),c = 2.91.(1..The crystal-chemical formula is(Fe0.87Mg0.1.Mn0.01.1.01.Cr1.62Al0.25Ti0.08V0.02)1.97O4,or simply formula *** X-ray diffraction lines are [d(),I/Io]:(2.675,1.0),(2.389,20),(2.089,1.),(1.953,90),(1.566,60),(1.439,1.),(1.425,1.),(1.337,40).xieite is a high pressure polymorph of FeCr2O4 and formed by solid-state transformation of chromite under shock-induced high pressure and tem-perature,in association with other high-pressure minerals including ringwoodite,majorite,lingunite and *** P-T condition for the formation of xieite is estimated to be 1.―23 GPa and 1.00―1.50℃,*** has recently been approved by the Commission on New Minerals,Nomenclature and Classification of the International Mineralogical Association(IMA 2007-056).The mineral name,xieite,is named after xiande xie.

关键词：络铁矿高压环境基因多态性矿物

针叶木硫酸盐浆中残留木素的GIF体系仿酶降解机理的研究

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纤维素科学与技术 2003年第4期11卷 1-7页

作者：谢益民胡周建赖燕明谌凡更华南理工大学制浆造纸工程国家重点实验室广东广州510640 中国科学院广州化学研究所纤维素化学重点实验室广东广州510650

由于针叶木硫酸盐浆中的残留木素含有大量难降解的LCC结构及其它缩合型木素结构,所以硫酸盐浆的分离木素可以用作难降解型木素大分子的一种结构模型。文章采用Cu2+/吡啶/过氧化氢组成的GIF仿酶体系对马尾松硫酸盐未漂浆的纤维素酶酶解木... 详细信息

由于针叶木硫酸盐浆中的残留木素含有大量难降解的LCC结构及其它缩合型木素结构,所以硫酸盐浆的分离木素可以用作难降解型木素大分子的一种结构模型。文章采用Cu2+/吡啶/过氧化氢组成的GIF仿酶体系对马尾松硫酸盐未漂浆的纤维素酶酶解木素(CEL)进行了仿酶降解,并对降解产物进行了分离和化学组成分析。通过FT-IR以及GC-MS测定,解析了CEL在降解过程中的结构变化,并对CEL的仿酶降解机理进行了探讨。研究结果表明:这种仿酶降解方法对浆中残留木素有较强的降解能力,一部分木素大分子被氧化降解为香草醛和香草酸等低分子化合物,使得降解后的产物中羰基和羟基增多。研究发现木素在仿酶体系中存在苯环及其侧链上C-H键的破坏、木素结构中Ca-Cb连接键的断裂、苯环的开环等反应。因此,该项研究可以为开发纸浆的仿酶漂白技术提供理论依据。

关键词：针叶木硫酸盐浆残余木素仿酶降解 GIF体系 GC-MS分析纸浆漂白

利用凡纳滨对虾加工面包虾工艺研究及贮藏特性分析

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食品科技 2011年第9期36卷 165-169页

作者：王素华陈积明朱海麦日利刘维郝淑贤海南省水产研究所海口570206 中国水产科学院南海水产研究所广州510300

研究面包虾不同温度下的贮藏特性并确定其Q1.。通过感官评价和菌落总数的测定,确定不同温度下面包虾的贮藏期,并得出贮藏期与温度呈指数关系:y=1..1.9e-0.1.48x,其相关系数为0.9574。最后得出判断面包虾货架期的Q1.计算公式为:F2=F1..01...

研究面包虾不同温度下的贮藏特性并确定其Q1.。通过感官评价和菌落总数的测定,确定不同温度下面包虾的贮藏期,并得出贮藏期与温度呈指数关系:y=1..1.9e-0.1.48x,其相关系数为0.9574。最后得出判断面包虾货架期的Q1.计算公式为:F2=F1..01.△/1.。

关键词：面包虾温度货架期

The discovery of TiO_(2)-Ⅱ,the α-PbO_(2)-structured high-pressure polymorph of rutile,in the Suizhou L6 chondrite

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Acta Geochimica 2023年第1期42卷 1-8页

作者： xiande {1. Xiangping Gu ming chen Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Laboratory of Mineral Physics and Materials Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China State Key Laboratory of Isotope geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China

We report the discovery of TiO_(2)-Ⅱ in the unmelted rock of the shocked Suizhou L6 *** TiO_(2)-Ⅱ was previously found in ultrahigh-pressure metamorphic and mantle-derived rocks,terrestrial impact structures,and *** microscopic,Raman spectroscopic,electron microprobe and transmission electron microscopic investigations have revealed:(1. All observed TiO_(2)-Ⅱ grains are related with ilmenite and pyrophanite;(2) TiO_(2)-Ⅱ occurs as needle-and leaf-shaped inclusions in llmenite and patch-,tape-shaped body in pyrophanite;(3)The composition of TiO_(2)-Ⅱ is identical with that of its precursor rutile;(4) The Raman spectrum of TiO_(2)-Ⅱ is in good agreement with that of natural and synthesized α-PbO_(2)-type TiO_(2);(5) TiO_(2)-Ⅱ occurs mainly in the form of well-ordered nano-domains and small mis-orientation among the domains can be observed.(6) All electron diffraction reflections from TiO_(2)-Ⅱ can be indexed to α-PbO_(2)structure in space group Pbcn with lattice parameters of a=4.481.?,b=5.578 A and c=4.921.A;(7) The exsolution inclusions of rutile from host ilmenite are mostly connected with an alternation process along the lamellar twinning plane of ilmenite induced by shockinduced high pressure and high temperature;(8) The P-T regime of 20-25 GPa and 1.00 ℃ estimated for the Suizhou unmelted rock is suitable for phase transition of rutile into TiO_(2)-Ⅱ phase.

关键词： Rutile TiO_(2)-Ⅱ High-pressure polymorph Shock metamorphism Suizhou meteorite