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The Chloride Permeability of Persulphated Phosphogypsum-Slag Cement Concrete

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Journal of Wuhan University of Technology(Materials Science) 2016年第5期31卷 1031-1037页

作者：黄有强 lu jianxin CHEN Feixiang 水中和 State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China China Railway Bridge Science Research Institute LtdWuhan 430034China

The chloride permeability and microstructure of persulphated phosphogypsum-slag cement concrete（PPSCC）, the Portland slag cement concrete（PSCC） and ordinary Portland cement concrete（OPCC） were investigated comparatively. Some test methods were used to evaluate the chloride permeability and explain the relationship between the permeability and microstructure of concrete. The results show that the resistance to chloride penetration in PPSCC is significantly better than that in OPCC, the reasons are as follows： 1） the slag in PPSCC is activated by clinker（alkali activation） and phosphogypsum（sulfate activation）, forming more low Ca/Si C-S-H gel and gel pores below 10 nm than OPCC, improving the resistance to chloride penetration; 2） the hydration products of PPSCC have a much stronger binding capacity for chloride ions; and 3） in the same mix proportion, PPSCC has a better workability without large crystals calcium hydroxide in the hydration products, the interfacial transition zone（ITZ） is smoother and denser, which can cut off the communicating pores between the pastes and aggregates.

关键词： PPSCC chloride permeability pore structure ITZ

Preparation of New Cementitious System using Fly Ash and Dehydrated Autoclaved Aerated Concrete

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Journal of Wuhan University of Technology(Materials Science) 2014年第4期29卷 726-732页

作者：水中和 lu jianxin TIAN Sufang SHEN Peiliang DING Sha State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology School of Materials Science and Engineering Wuhan University of Technology

We experimentally studied the interaction between pozzolanic material（fly ash） and dehydrated autoclaved aerated concrete（DAAC）. The DAAC powder was obtained by grinding aerated concrete waste to particles fi ner than 75μm and was then heated to temperatures up to 900 ℃. New cementitious material was prepared by proportioning fly ash and DAAC, named as AF. X-ray diffraction（XRD） was employed to identify the crystalline phases of DAAC before and after rehydration. The hydration process of AF was analyzed by the heat of hydration and non-evaporable water content（Wn）. The experimental results show that the highest reactivity of DAAC can be obtained by calcining the powder at 700 ℃ and the dehydrated products are mainly β-C2 S and CaO. The cumulative heat of hydration and Wn was found to be strongly dependent on the replacement level of fl y ash, increasing the replacement level of fl y ash lowered them in AF. The strength contribution rates on pozzolanic effect of fl y ash in AF are always negative, showing a contrary tendency of that of cement-fl y ash system.

关键词： dehydrated autoclaved aerated concrete pozzolanic reaction heat of hydration nonevaporable water content strength contribution rate

Properties of Supersulphated Phosphogysum-slag Cement (SSC) Concrete

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Journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 109-113页

作者：丁沙水中和 CHEN Wei lu jianxin TIAN Sufang State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology

Supersulphated phosphogysum-slag cement （SSC） is a newly developed non-burned cementitious material mainly composed of phosphogysum （PG） and ground granulated blast furnace slag （GGBFS）, with small amount of steel slag （SS） and clinker （CL）. SSC is a kind of environmentally-friendly cementitious material due to its energy-saving, low-carbon emission, and waste-utilization. We prepared concretes with supersulphated phosphogysum-slag cement, and studied the mechanical properties, micro- properties and resistance to chloride penetration of concrete in comparison with those of portland slag cement （PSC） and ordinary portland cement （OPC） concrete. The test results show that the compressive strength of SSC concrete can reach 38.6 MPa after 28 d, close to PSC concrete and OPC concrete. Microanalyses indicate that large quantities of ettringite and C-S-H, and little amount of Ca（OH）2 are generated during the hydration of SSC. The dense cement paste structure of SSC is formed by ettringite and C-S-H, surrounded unreacted phosphogysum. The property of resistance to chloride penetration of SSC concrete is better than PSC and OPC concrete due to the fact that SSC can form much more ettringite to solidify more Cl^-.

关键词： supersulphated phosphogysum-slag cement chloride penetration ettringite

On Willingness of Rural Land Circulation and Securitization in Central Regions of China

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Asian Agricultural Research 2014年第3期6卷 36-41页

作者： jianxin lu Yuwei SU School of Finance Zhongnan University of Economics and Law

On the basis of questionnaire survey in 54 natural villages of 22 cities( counties) in 6 central region provinces,this paper analyzed the willingness of rural land circulation and securitization and influencing factors with the aid of Logistic model and Multinomial Logit *** study indicates that factors influencing willingness of rural land circulation and securitization mainly include land contract method,land circulation information and approaches,rights and interests of farmers infringed or not,policies of benefiting farmers,and non-agricultural skills. Finally,it came up with following pertinent policy recommendations:( 1) reforming and improving land contract methods;( 2)strengthening disclosure of land circulation information;( 3) reforming and improving land circulation approaches;( 4) strengthening protection of farmers' rights and interests in the process of land circulation;( 5) reinforcing and implementing policies benefiting farmers;( 6) cultivating and developing farmers' non-agricultural skills.

关键词： Rural land circulation Land securitization Logisti

Second　sea－entering　approach　of　Changjiang　River：　Tongl　Canal－planning　of　control　dimensions，　analysis　of　erosion　and　siltation　and　selection　of　outlet

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Acta Oceanologica Sinica 1995年第1期14卷 113-125页

作者： lu Wujiang and Jin jianxin(Research Institute of Coastal and Ocean Engineering, Hobal University, Nangjing 210024, China)

Assume that the Tonglu Canal would be widened and deepened in which a water lock is constructed atthe river side, and made open to the sea side. The canal's planned control dimensions are determined, and the erosionand siltation characteristics along the river (totally 81. 8 km) are analyzed by the numerical calculation of one-dimen-sional unsteady flow and the relative standards. According to the data of the evolution, hydrology and sediment inthe Xiaomiaohong Waterway, it is found reasonable to select the channel near the Xingang Gate as the second sea-entering approach. This paper is helpful in planning and designing the approach.

关键词： Sea-entering approach Tongl■ Canal erosion and siltation analysis planning scale

Common susceptibility variants of KDR and IGF-1R are associated with poststroke depression in the Chinese population

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General Psychiatry 2023年第1期36卷 36-42页

作者： Yingying Yue Linlin You Fuying Zhao Kezhong Zhang Yanyan Shi Hua Tang jianxin lu Shenghua Li Jinxia Cao Deqin Geng Aiqin Wu Yonggui Yuan Department of Psychosomatics and Psychiatry ZhongDa HospitalSoutheast UniversityNanjingChina Department of Psychiatry Suzhou High-Tech Development District Yangshan Community HospitalSuzhouChina Department of Neurology The First Affiliated Hospital of Nanjing Medical UniversityNanjingChina Department of Neurology Nanjing First HospitalNangjingChina Department of Neurology The Third People's Hospital of Huai'anHuai'anChina Department of Neurology People's Hospital of Gaochun CountyNanjingChina Department of Neurology The Affiliated Nanjing Jiangning Hospital of Nanjing Medical HospitalNanjingChina Department of Neurology The Second People's Hospital of LianyungangLianyungangChina Department of Neurology The Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina Department of Psychosomatics The Affiliated First Hospital of Soochow UniversitySoochowChina

Background Depression,one of the most frequent complications after stroke,increases the disease’s burden and physical *** depression(PSD)is a multifactorial disease with genetic,environmental and biological factors involved in its *** studies on PSD to date have mainly focused on the monoamine system and brain-derived neurotrophic ***,understanding is still limited about the influence of the single nucleotide polymorphism(SNP)of other neurotrophic factors on *** The present study aimed to investigate the relationship between seven vascular endothelial growth factor(VEGF)family gene variants that occur with *** A multicentre candidate gene study from five hospitals in Jiangsu Province from June 2013 to December 2014 involved 121 patients with PSD and 131 patients with *** characteristics and neuropsychological assessments were ***χ^(2)test was used to evaluate categorical variables,while the independent t-test was applied to continuous *** in seven genes(VEGFA,VEGFB,KDR,FLT-1,IGF-1,IGF-1R and PlGF)were ***-marker association for PSD was analysed byχ^(2)tests and logistic regression using SPSS and PLINK *** Patients with PSD included more women and those with lower education levels,lower body mass indexes,lower Mini-Mental State Examination scores,and higher scores on the 17-item Hamilton Depression Rating Scale than non-PSD ***-two SNPs with seven genes were genotyped and passed quality *** rs7692791 CC genotypes,the C allele of KDR and the rs9282715 T allele of IGF-1R increased the risk for PSD(χ^(2)=7.881,p=0.019;χ^(2)=4.259,p=0.039;χ^(2)=4.222,p=0.040,respectively).In addition,the SNP rs7692791 of KDR was significantly associated with PSD by the logistic regression of an additive model(p=0.015,OR=9.584,95%CI:1.549 to 59.31).Conclusions Patients with rs7692791 C allele carriers or the CC genotype of KDR and the rs9282715 T all

关键词： KDR susceptibility additive

Effects　of　NH＿3　on　N＿2O　Formation　and　Destruction　in　Fluidized　Bed　Coal　Combustion

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Journal of Thermal Science 1994年第4期3卷 278-282页

作者： JianWei Yuan Bo Feng jianxin lu Hao Liu Dechang Liu(National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074,China.) 1. National Laboratory of Coal Combustion Huazhong University of Science and Technology 430074 Wuhan China

The NH3 oxidation and reduction process are experimentally and kinetically studied in this paper. It is found that NH3 has contributions not only to N2O formation, but also to N2O destruction in certain conditions. The main product of homogeneous NH3 oxidation is found to be NO rather than N2O,but some bed materials and sulphur sorbents have catalytic contributions to N2O formation from NH3oxidation. In reduction atmosphere, NH3 can promote the KC destruction. It is deduced that the ammonia injection into fluidized bed coal combustion fine gas can decrease both Nox and N3O *** ammonia injection process is kinetically simulated in this study, and the reduction rates of NOX and N2O are found to depend on eemperatue, O2 concentration, initial NOx and N2O concentrations,and amount of injected ammonia.

关键词： N_2O formation and destruction NH_3 oxidation and reduction ammonia infection.

Mitochondrial tRNA^(Glu) A14693G variant may modulate the phenotypic manifestation of deafness-associated 12S rRNA A1555G mutation in a Han Chinese family

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Journal of Genetics and Genomics 2009年第4期36卷 241-250页

作者： Yu Ding Yongyan Li Junyan You Li Yang Bobei Chen jianxin lu Min-Xin Guan Zhejiang Provincial Key Laboratory of Medical Genetics School of Life Sciences Wenzhou Medical College Wenzhou 325025 China Division of Human Genetics and Center for Hearing and Deafness Research Cincinnati Children's Hospital Medical Center Cincinnati Ohio 45229 USA Department of Otolaryngology the SecondAffiliated Hospital Wenzhou Medical College Wenzhou 325000 China Deparment of Pediatrics University of Cincinnati College of Medicine Cincinnati Ohio 45229 USA

Mutations in mitochondrial 12S rRNA gene are one of the most important causes of aminoglycoside-induced and nonsyndromic hearing loss. Here we report the characterization of one Han Chinese pedigree with aminoglycoside-induced and nonsyndromic hearing loss. This Chinese family carrying the 12S rRNA A1555G mutation exhibited high penetrance and expressivity of heating impairment. In particular, penetrances of hearing loss in this family pedigree were 43.8% and 25%, respectively, when aminoglycoside-induced heating loss was included or excluded. Mutational analysis of entire mitochondrial genomes in this family showed the homoplasmic A1555G mutation and a set of variants belonging to haplogroup Y2. Of these, the A14693G variant occurred at the extremely conserved nucleotide （conventional position 54） of the TψC-loop of tRNA^Clu and was absent in 156 Chinese controls. Nucleotides at position 54 of tRNAs are often modified, thereby contributing to the structural formation and stabilization of functional tRNAs. Thus, the structural alteration of tRNA by the A14693G variant may lead to a failure in tRNA metabolism and impair mitochondrial protein synthesis, thereby worsening mitochondrial dysfunctions altered by the A1555G mutation. Therefore, the tRNA^Glu A14693G variant may have a potential modifier role in increasing the penetrance and expressivity of the deafness-associated A1555G mutation in this Chinese pedigree.

关键词： hearing loss mitochondrial DNA mutation modifier 12S rRNA tRNA Chinese family

Structural characterization and hypoglycemic activity of a polysaccharide isolated from the root of ophiopogon japonicus

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Structural characterization and hypoglycemic activity of a p...