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Hy.rothermal conversion of Ti-containing minerals in sy.tem of Na_2O–Al_2O_3–SiO_2–CaO–TiO_2–H_2O

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Rare Metals 2016年第6期35卷 495-501页

作者： y.n-xiu Wang Ting-An Zhang Guo-Zhi Lv Xiao-Feng Zhu Wei-Guang Zhang Li-Qun Xie Key.Laboratory.for Ecological Utilization of Multimetallic Mineral Ministry of Education Northeastern University Shenyang 110819 China

Titanium has a great effect on the digestion of bauxite in the Bay.r process because it reacts readily.at high temperatures in alkaline sodium aluminate solution. Under this consideration, the hy.rothermal conversion of Ti-containing minerals in the sy.tem of Na2O-Al2O3- SiO2-CaO-TiOz-H2O with increased temperatures was studied based on the thermody.amic analy.is and sy.tematic experiments. The results show that anatase converts to AlaTi2SiO12 at low temperatures （60-120℃）, which is similar to anatase in cry.tal structure. As the temperature continues to rise, Al4Ti2SiO12 decomposes gradually.and converts to Ca3TiSi2（Al2Si0.5Ti0.5）O14 at 200 ℃ When the temperature reaches 260℃, CaTiO3 forms as the most stable titanate species for its hexagonal closest packing with O^2- and Ca^2＋. The findings enhance the under-standing of titanate scaling in the Bay.r process and clarify.the mechanism of how additive lime improves the digestion of diaspore.

关键词： Hy.rothermal conversion Ti-containing minerals Bay.r process Anatase Aluminosilicate

Weak absorption test and defect analy.is of optical coatings

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光学精密工程 2005年第4期13卷 430-434页

作者： HE Hong-bo LI Xia FAN Shu-hai ZHAO y.an-an SHAO Jian-da FAN Zheng-xiu Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China

Surface thermal lensing technique was developed into a high-sensitive apparatus for weak absorption test and defect analy.is of optical coatings. A continuous-wave 1 064 nm Nd:y.G laser and a He-Ne laser were employ.d as pump source and probe source, respectively. Low noise photoelectrical components and a lock-in amplifier were used for photo-thermal deformation signal detection. In order to improve sensitivity. the apparatus configuration was optimized by.choosing appropriate parameters, including pump beam spot size, chopper frequency. detection distance, waist radius and position of probe beam. Coating samples were mounted on a x-y.stage. Different procedures, such as single spot, linear scan and 2-dimension area scan, could be performed manually.or automatically. Various optical coatings were prepared by.both electron beam evaporation and ion beam sputtering deposition. High sensitivity.was obtained and low to 1×10 -7 weak absorption was tested in low-loss coating samples. For the sensitivity.extreme of the sy.tem, 1×10 -8 absorption was reason out to be measured by.surface thermal lensing technique. Very.small standard deviation was achieved for the reproducibility.evaluation. Moreover, a spatial resolution of 25 micron was proved according to the area scan which traced out the profile of photo-thermal defects inside optical coatings. The sy.tem was employ.d in the analy.es of optical absorption, absorption uniformity.and defect characterization, and revealed the relationship between laser-induced damage and absorption of optical coatings.

关键词：光学涂覆技术吸收能力稳定性激光技术

Experimental Study.of Mooring Ty.e Effect on the Hy.rody.amic Characteristics of VLFS

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China Ocean Engineering 2022年第1期36卷 155-166页

作者： FENG Ming-wei SUN Zhao-chen LIANG Shu-xiu LI Zhi LV Xuan JIA Song-lin HUXin-y.e State Key.Laboratory.of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China

Mooring sy.tem is a significant part of very.large offshore floating structures(VLFS).In this paper,a single module pontoon ty.e VLFS model considering four mooring ty.es is studied through phy.ical model tests to determine the effects of mooring conditions on the hy.roelastic response,mooring force,incident coefficient,reflection coefficient and energy.dissipation *** mooring cables are sy.metrically.arranged on both sides of the *** floating body.model satisfies the similarity.of stiffness and gravity.while the cable satisfies the similarity.of elasticity.and *** results show that the effect of mooring ty.e on mooring force is greater than that on hy.roelastic *** the initial tension of the mooring cable will reduce the amplitude of the leeward of the VLFS *** mooring angle of the mooring cable will affect the maximum mooring force and the initial tension of the mooring line will affect the wave period in which the maximum mooring force *** transmission coefficient and wave energy.dissipation coefficient will change regularly.with different mooring *** results may.provide a reference to facilitate the mooring design of VLFS.

关键词： VLFS hy.roelastic response mooring sy.tem 3D experimental test mooring force wave reflection coefficient wave transmission coefficient wave dissipation coefficient

Sy.thesis,structures and photoluminescence of urany. poly.xometalate clusters based on trilacunary.TeW_(9)O_(33)]^(8-)

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Tungsten 2023年第2期5卷 254-260页

作者： Hai-y.ng Wang xiu-y.ng Zheng La-Sheng Long Lan-Sun Zheng Xiang-Jian Kong State Key.Laboratory.of Phy.ical Chemistry.of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Henan Key.Laboratory.of Poly.xometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China Institutes of Phy.ical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China

Sy.thesis of urany. poly.xometalate clusters attract more attention but remain great ***,two urany. poly.xometalate inorganic clusters of{Na_(6)(NH_(4))_(19)[(TeW_(9)O_(33))_(4)[TeO_(2)(OH)](UO_(2))4(H_(2)O)_(2)]·50H_(2)O}n(1,Te-U_(4))and(NH_(4))18{Na@[(TeW_(9)O_(32)OH)(TeW_(9)O_(33))_(2)[TeO(OH)][W_(3)O_(12)(μ_(3)-OH)](UO_(2))_(6)(μ_(2)-OH)_(2)H_(2)O]}·75H_(2)O(2,Te-U6)were prepared using trilacunary.α-B-TeW_(9)O_(33)]8-as inorganic *** analy.is showed that compound 1 is a one-dimensional chain structure formed by.tetrameric aggregates of[(α-B-TeW_(9)O_(33))_(4)(TeO_(2)(OH))(UO_(2))_(4)(H_(2)O)2]25-as nodes and Na+ions as *** anionic tetrameric aggregates in 1 is made of two sandwich-ty.e dimers of[(TeW_(9)O_(33))_(2)(UO_(2))_(2)H_(2)O]12-bridged by.a[TeO_(2)(OH)]-*** 2 is a triangular trimeric architecture templated by.Na+*** solid-state luminescence emission spectra of compounds 1 and 2 show the characteristic peaks of urany. *** 1 with one-dimensional chain structure exhibited a higher photoluminescence quantum y.elds(PLQy.than that of 2,due to the more rigidity.of 1 reducing the nonradiative transitions.

关键词： Urany. Poly.xometalate Cluster Lacunary Luminescence

Length of stay.in urban areas of circular migrants from the mountainous areas in China

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Journal of Mountain Science 2016年第5期13卷 947-956页

作者： TAN Ming-hong LI xiu-bin y.N Jian-zhong XIN Liang-jie SUN Lai-xiang Key.Laboratory.of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing100101China College of Resources and Environment Southwest UniversityChongqing 400715China Department of Geographical Sciences University of MarylandCollege ParkMD 20742USA

Currently. there is limited literature dealing with the length of stay.of circular migrants in urban areas （LSCMU）, although many.studies have discussed the phenomenon of migration and the determinants of migration. This study.attempts to fill that gap using survey.data from the mountainous areas of Chongqing, Southwest China. From a comparative perspective, this study.divided workers into two groups （a y.ung group aged between 16 and 35 y.ars and an old group aged between 36 and 65 y.ars）. The average LSCMU values for the y.ung and old groups were 225 day. and ~74 day., respectively. Two multi-regression models were used to estimate the determinants of LSCMU in the two groups. The results showed that LSCMU was closely.related to individual factors in both groups, including gender, age and job training. Family.and community.factors, including household size, arable land per capita and the distance from market, had much weaker effects on the dependent variable, especially.in the older group. It was noticeable that job training had significant positive effects on LSCMU in both groups; these findings have special implications for the urbanization process in China.

关键词： Circular migrants Urban Mountain areas China

Sy.thesis, Structural Characterization and Fluorescent Properties of a Cadmium Coordination Poly.er with 4-Nitrophthalate and 1,4-Bis(imidazol-1-y.)-benzene

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Chinese Journal of Structural Chemistry 2020年第5期39卷 955-959页

作者： LI xiu-Mei PAN y.-Rua LIU Bo ZHOU Shi Faculty.of Chemistry Tonghua Normal UniversityTonghua 134002China Key.Laboratory.of Preparation and Applications of Environmental Friendly.Materials(Jilin Normal University. Ministry of EducationChangchun 130103China

A new complex[Cd(nph)(bix)]n(1,H2nph=4-nitrophthalic acid,bix=1,4-bis(imidazol-1-y.)-benzene)has been successfully.sy.thesized under hy.rothermal *** structure has been characterized by.elemental analy.is,IR spectrum,TG,single-cry.tal and powder X-ray.*** Cd^2+ion has a distorted octahedral environment with four O atoms from two nph ligands and two N atoms from two bix *** bix acts as a cis-conformation bridging ligand to link the neighboring[Cd2(nph)]subunit to form tetranuclear subunits with 42-ring,which are bridged again by.bix ligands to y.eld a two-dimensional network *** was stabilized by.C–H···O hy.rogen bonding andπ-πinteractions,and extended into a 3D supramolecular ***,the luminescent properties of complex 1 have been investigated in the solid state.

关键词： hy.rothermal sy.thesis cry.tal structure 4-nitrophthalic acid 1,4-bis(imidazol-1-y.)-benzene Cd(Ⅱ)complex

Studies　on　Ester　Exchange　Reaction

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Chemical Research in Chinese Universities 1998年第1期14卷 38-41页

作者： Zhang, JW Zhang, XL Ma, XL Liu, CC Mu, y.Sun, y. Jiang, WP Huang, HM Li, y. Peng, WR Jilin Univ Dept Chem Changchun 130023 Peoples R China Changchun Higher Coll Med Sci Dept Pharmacol Changchun 130023 Peoples R China

ＳｔｕｄｉｅｓｏｎＥｓｔｅｒＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎＺＨＡＮＧＪｉｎｇ－ｗｅｎ，ＺＨＡＮＧＸｉａｏ－ｌｏｎｇ，ＭＡＸｉｕ－ｌｉ，ＬＩＵＣｈａｎｇ－ｃｈｅｎｇ，ＭＵＹｉｎｇ，ＳＵＮＹｕｎ－ｘｉｕ，ＪＩＡＮＧＷｅ... 详细信息

ＳｔｕｄｉｅｓｏｎＥｓｔｅｒＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎＺＨＡＮＧＪｉｎｇ－ｗｅｎ，ＺＨＡＮＧＸｉａｏ－ｌｏｎｇ，ＭＡＸｉｕ－ｌｉ，ＬＩＵＣｈａｎｇ－ｃｈｅｎｇ，ＭＵＹｉｎｇ，ＳＵＮＹｕｎ－ｘｉｕ，ＪＩＡＮＧＷｅｎ－ｐｕ，ＨＵＡＮＧＨｕａ－ｍｉｎ...

关键词： Reaction Studies Exchange Ester

Hy.roxy.oumarin efficiently.inhibits spring viraemia of carp virus infection in vitro and in vivo

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Zoological Research 2020年第4期41卷 395-409页

作者： Lei Liu Da-Wei Song Guang-Lu Liu Li-Peng Shan Tian-xiu Qiu Jiong Chen State Key.Laboratory.for Managing Biotic and Chemical Threats to the Quality.and Safety.of Agro-products Ningbo UniversityNingboZhejiang 315211China Laboratory.of Biochemistry.and Molecular Biology School of Marine SciencesMeishan CampusNingbo UniversityNingboZhejiang 315832China Key.Laboratory.of Applied Marine Biotechnology.of Ministry.of Education Meishan CampusNingbo UniversityNingboZhejiang 315832China School of Chemistry.Chemical Engineering Zhoukou Normal UniversityZhoukouHenan 466001China

Spring viremia of carp virus(SVCV)causes devastating losses in *** has an advantageous structure for the design of novel antiviral agents with high affinity.and *** this study.we evaluated a hy.roxy.oumarin medicine,i.e.,7-(6-benzimidazole)coumarin(C10),regarding its anti-SVCV effects in vitro and in *** showed that up to 12.5 mg/L C10 significantly.inhibited SVCV replication in the epithelioma papulosum cy.rini(EPC)cell line,with a maximum inhibitory.rate of>97%.Furthermore,C10 significantly.reduced cell death and relieved cellular morphological damage in SVCV-infected *** mitochondrial membrane potential(ΔΨm)also suggested that C10 not only.protected mitochondria,but also reduced apoptosis in SVCVinfected *** in vivo studies,intraperitoneal injection of C10 resulted in an anti-SVCV effect and substantially.enhanced the survival rate of virusinfected ***,C10 significantly.enhanced antioxidant enzy.e activities and decreased reactive oxy.en species(ROS)to maintain antioxidant-oxidant balance within the host,thereby.contributing to inhibition of SVCV *** up-regulation of six interferon(IFN)-related genes also demonstrated that C10 indirectly.activated IFNs for the clearance of SVCV in *** was beneficial for the continuous maintenance of antiviral effects because of the low viral loads in ***,C10 is suggested as a therapeutic agent with great potential against SVCV infection in aquaculture.

关键词： vivo thereby maintain

Gastrointestinal stromal tumors of the duodenum:Surgical management and survival results

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World Journal of Gastroenterology 2013年第36期19卷 6000-6010页

作者： Xiao Liang Hong y. Lin-Hua Zhu Xian-Fa Wang xiu-Jun Cai Department of General Surgery Sir Run Run Shaw Hospital School of Medicine Zhejiang University

AIM:To provide long-term survival results of operable duodenal gastrointestinal stromal tumors(DGISTs)in a tertiary.center in ***:In this retrospective study.the pathological data of 28 patients with DGISTs who had been treated surgically.at the Second Department of General Surgery.Sir Run Run Shaw Hospital(SRRSH)from June1998 to December 2006 were *** pathological slides were examined by.a single pathologist to confirm the *** patients whose diagnosis was not confirmed by.immunohistochemistry.at the time of resection,representative paraffin blocks were reassembled,and sections were studied using antibodies against CD117(c-kit),CD34,smooth muscle actin(SMA),vimentin,S-100,actin(HHF35),and *** procedures were classified as wedge resection(WR,local resection with pure closure,without duodenal transection or anastomosis),segmental resection[SR,duodenal transection with Roux-y.or BillrothⅡgastrojejunostomy.G-J),end-to-end duodenoduodenostomy.D-D),end-to-end or end-to-side duodenojejunostomy.D-J)],and pancreaticoduodenectomy.PD,Whipple operation with pancreatojejunostomy..R0 resection was pursued in all cases,and at least R1 resection was *** ly.phadenectomy.was not *** manifestations,surgery.medical treatment and follow-up data were retrospectively.*** studies in the literature were ***:There were 12 males and 16 females patients,with a median age of 53 y.ars(20-76 y.ars).Their major complaints were"gastrointestinal bleeding"(57.2%)and"nonspecific discomfort"(32.1%).About14.3%,60.7%,17.9%,and 7.1%of the tumors originated in the first to fourth portion,respectively.with a median size of 5.8 cm(1.6-20 cm).Treatment was by.WR in 5 cases(17.9%),SR in 13 cases(46.4%),and by.PD in 10 cases(35.7%).The morbidity.and mortality.rates were 35.7%and 3.6%,*** median post-operative stay.was 14.5 d(5-47 d).During a follow-up of 61(23-164)mo,the 2-y.ar and 5-y.ar relapse-free su

关键词： Gastrointestinal stromal tumors Duodenum Limited resection Pancreaticoduodenectomy Survival