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四硼酸钠对碱激发矿渣胶凝材料水化硬化性能的影响

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武汉理工大学学报 2024年第5期46卷 9-16,33页

作者：谭高明谷家行吴博刘志徐健康张全涛马雪西南科技大学材料与化学学院绵阳621010

以四硼酸钠为缓凝剂,探究其对AAS凝结时间的调控作用,并结合水化热、微观形貌、物相组成、化学键、孔结构分析阐释了微结构演变行为,揭示了缓凝机理。结果表明:当四硼酸钠掺量为0~20%(以矿渣质量计)时,AAS初凝时间由19 min延长至377 min... 详细信息

以四硼酸钠为缓凝剂,探究其对AAS凝结时间的调控作用,并结合水化热、微观形貌、物相组成、化学键、孔结构分析阐释了微结构演变行为,揭示了缓凝机理。结果表明:当四硼酸钠掺量为0~20%(以矿渣质量计)时,AAS初凝时间由19 min延长至377 min,终凝时间由26.5 min延长至455 min,56 d抗压强度损失率能够控制在19%以内。四硼酸钠使AAS凝胶相C-A-S-H衍射峰向大角度偏移,水化诱导期延长,凝胶孔(<10 nm)及毛细孔(10~100 nm)数量增加,孔结构粗化。其缓凝机理为:四硼酸钠在矿渣表面形成含硼络合物包覆层,阻碍参与反应离子迁移,延缓水化反应。

关键词：碱激发矿渣水玻璃四硼酸钠凝结时间抗压强度

Identification of A Field Strain of Infectious Laryngotracheitis Virus Isolated from jiangsu Province

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Animal Husbandry and Feed Science 2011年第1期3卷 22-24页

作者： ZHANG jian-Jun wu Xiao-chun MA jian-yun DING Hai-jun ZHANG Wei ZHOU Yang ZHOU yu-shuang Yangzhou VAC. BIO Engineering Co. Ltd. Yangzhou 225127 China Changzhou Lihua Livestock and Poultry Co. Ltd. Changzhou 213168 China

[ Objective] To isolate and identify infectious laryngotracheitis virus （ILTV） from chickens. [ Method] Larynx, trachea, liver and other organs were collected from infectious laryngotracheitis （ILT）-suspected layers. And ILTV TK gene was amplified from these specimens by PCR for initial diagnosis. Virus fluid was isolated and inoculated into SPF chicken embryos via allantoic cavity and chorioallantoic membrane （CAM）, respectively. Hyaluronic acid in allantoic fluid was detected, and CAM lesions were observed. The definite diagnosis was performed through animal regression test. [Result] A 1.3 kbp fragment was amplified from larynx and its secretion of the ILT-suspected chickens. And its amino acid sequence had 98.5% homology to that of ILTV TKgene published in GenBank. After the chicken embryos were inoculated with the isolated ILFV fluid, pox spots, giant polynuclear syncytial cells having intranuclear inclusion bodies were observed in CAM. After being challenged by the IL TV fluid, the chickens showed typical respiratory symptoms and pathological changes of ILT. [Coudusion] A field strain named ILTV XZ09 was isolated from larynx and its secretion of ILT-suspected chickens.

关键词： Infectious laryngotracheitis Infectious laryngotracheitis virus Isolation Identification

面向高帧率CMOS图像传感器的12位列级全差分SAR/SS ADC设计

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集成电路与嵌入式系统 2024年第5期24卷 48-54页

作者：牛志强陈志坤胡子阳王刚刘剑吴南健冯鹏宁波大学物理科学与技术学院宁波315211 中国科学院半导体研究所半导体超晶格国家重点实验室北京100083 中国科学院大学材料与光电研究中心北京100049

针对高帧率CMOS图像传感器的应用需求,提出一种结合逐次逼近型(Successive Approximation Register,SAR)和单斜坡(Single Slope,SS)结构的混合型模拟数字转换器(Analog to Digital Converter,ADC)。该ADC的分辨率为12位,其中SAR ADC实现高6位量化,SS ADC实现低6位量化。该ADC采用了全差分结构消除采样开关的固定失调并减少非线性误差,同时在SAR ADC中采用了异步逻辑电路进一步缩短转换周期。采用110 nm 1P4M CMOS工艺对该电路进行了设计和版图实现,后仿真结果表明,在20 MHz的时钟下,转换周期仅为3.3μs,无杂散动态范围为77.12 dB,信噪失真比为67.38 dB,有效位数为10.90位。

关键词：高帧率CMOS图像传感器混合型列ADC 单斜ADC 逐次逼近型ADC 电流舵DAC

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Optimal technique of three-dimensional MRI of the lumbar nerve root and its radicular vein in normal and lumbar disc herniation patients

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Chinese Medical Journal 2011年第12期124卷 1802-1806页

作者： LOU Zhao-hui QU Jin-rong LI Hai-liang LIANG Bi-ling CHEN jian-yu wu Zhuo CHENG Jing-liang Deartment of Orthopaedic Surgery First Affiliated Hospital of Zhengzhou UniversityZhengzhou Henan 450052 China Deartment of MRI First Affiliated Hospital of Zhengzhou University Zhengzhou Henan 450052 China Department of Radiology Henan Cancer Hospital ZhengzhouHenan 450008 China Department of Radiology Second Affiliated Hospital of Zhongshan University Guangzhou Guangdong 510120 China

Background Although three-dimensional MRI （3D-MRI） of short T1 inversion recovery turbo spin-echo （STIR TSE） has showed superior to two-dimensional MRI （2D-MRI） in showing the spinal cord and lumbar nerve roots, it remains difficult in demonstrating radicular vein at present. We have found that short T1 inversion recovery long time echo （STIR LONG TE） was better in showing radicular vein. To further study the methods and character of the 3D-MRI of lumbar nerve root, ganglions and radicular vein in normal and lumbar disc herniation （LDH） adults, in the present study, we evaluated two 3D-MRI techniques, STIR TSE and STIR LONG TE for demonstrating lumbar nerve roots and especial radicular vein in normal and LDH adults. Methods Twelve normal adult persons and 19 LDH patients were included in this study; special oblique coronal location was adopted. STIR TSE and STIR LONG TE were performed in all participants, and the detection rates of radicular vein and nerve root of L3, L4, L5,S1 were calculated. The grading system was used in grading compromise of the intraspinal extradural lumbar nerve root, ganglion and radicular vein in LDH patients, and all the grading injury of nerve root, ganglion and radicular vein had been evaluated. Results The definite rate of radicular vein （DRRV） of 3D-MRI of STIR LONG TE was significantly different from that of STIR TSE. DRRV of STIR LONG TE was L3, 91.7%, L4, 100%, L5, 100%, $1, 100% and that of STIR TSE was L3, 33.3%, L4, 37.5%, L5, 58.3%, $1,45.8% in normal adults. It showed no difference between STIR LONG TE and STIR TSE in the detection rate of nerve root. The different patho-injuries of nerve root, ganglion and radicular vein could be seen in all LDH patients by the 3D-MRI of STIR LONG TE. The mean score of Japanese Orthopaedic Association （JOA） was 16.16, and 29 nerve roots were calculated in all the study. The mean grading injury of nerve root was 2.17, that of nerve root ganglion was 1.28, that of radicular vein was 1.83, and th

关键词： three-dimensional MRI lumbar nerve root radicular vein lumbar disc herniation

Glutamate and aspartate alleviate testicular/epididymal oxidative stress by supporting antioxidant enzymes and immune defense systems in boars

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Science China(Life Sciences) 2020年第1期63卷 116-124页

作者： Wenjie Tang jian wu Shunshun Jin Liuqin He Qinlu Lin Feijun Luo Xingguo He Yanzhong Feng Binsheng He Pingping Bing Tiejun Li yulong Yin Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesHunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionChangsha 410125China National Engineering Laboratory for Deep Process of Rice and Byproducts Hunan Key Laboratory of Grain-oil Deep Process and Quality ControlHunan Key Laboratory of Processed Food for Special Medical PurposeCollege of Food Science and EngineeringCentral South University of Forestry and TechnologyChangsha 410004China Academics Working Station at The First Affiliated Hospital Changsha Medical UniversityChangsha 410219China Sichuan Academy of Animal Sciences Animal Breeding and Genetics Key Laboratory of Sichuan ProvinceChengdu 610066China ^Changsha Green LecrfBiotechnology Co. Ltd.Changsha 610066Hunan Heilongjiang Academy of Agricultural Sciences Harbin 150086China

Several potential oxidative agents have damaging effects on mammalian reproductive *** study was conducted to investigate the effects of glutamate(Glu)and aspartate(Asp)supplementation on antioxidant enzymes and immune defense systems in the outer scrotum of boars injected with H2O2.A total of 24 healthy boars were randomly divided into 4 treatment groups:control(basal diet,saline-treated),H2O2(basal diet,H2O2-challenged outer scrotum(1 m L kg^–1 BW)),Glu(basal diet+2%Glu,H2O2-challenged),and Asp(basal diet+2%Asp,H2O2-challenged).Our results showed that both Glu and Asp supplementation improved testicular morphology and decreased the genital index in the H2O2-treated *** and Asp administration increased the antioxidant enzyme activities and affected the testicular inflammatory cytokine secretion but had no effect on sex hormone ***,the m RNA expression of CAT,Cu Zn SOD,and GPx4 was altered in the testes and epididymis of boars treated with Asp and *** and Asp supplementation also modulated the expression of TGF-β1,IL-10,TNF-α,IL-6 and IL-1βin the testis and *** results indicate that dietary Glu and Asp supplementation might enhance antioxidant capacity and regulate the secretion and expression of inflammatory cytokines to protect the testes and epididymis of boars against oxidative stress.

关键词： glutamate aspartate boars oxidative stress inflammatory cytokines

Late Quaternary palaeoenvironmental changes documented by microfaunas and shell stable isotopes in the southern Pearl River Delta plain,South China

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Journal of Palaeogeography 2013年第4期2卷 344-361页

作者： Liu Chunlian Franz T. Fürsich wu Jie Dong Yixin Yang Tingting Yin jian Department of Earth Sciences Sun Yat-Sen University Geozentrum Nordbayern FG Pal oumwelt der Friedrich-Alexander-Universitt Erlangen Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes

Ahigh resolution study of sediments,microfaunas(ostracods and foraminifers),and stable isotopes of ostracod shells from core PRD05,sampled from the Da’ao plain of the Pearl River Delta,provides new data about palaeoenvironmental changes during the Late *** basal fluvial gravelly sediments of the core,representing the lowest deposits of the Quaternary at the core site,were possibly formed prior to the transgression associated with the last interglacial *** fluvial setting changed into a marginal marine setting during the last interglacial stage,any record of calcareous fossils were destroyed by subsequent dissolution during the last glacial phase,when the upper part of the deltaic sediments experienced subaerial oxidation,indicated by a mottled clay layer in the *** postglacial sealevel rise in the South China Sea began at16,700 cal yr *** the first phase of sea-level rise(from ~16,700 to 10,100 cal yr B.P.),a swamp environment developed at the core *** ~10,100 cal yr B.P.,marine waters intruded onto the Da’ao plain and reached the core site through the Modaomen *** timing was earlier than in other parts of the Pearl River *** then,a semi-enclosed estuarine environment developed and was maintained until ~5560 cal yr *** this transgressive interval,short-term environmental fluctuations can be recognized based on microfauna and shell geochemical *** ~10,100 to 8630 cal yr B.P.,the sea-level rose,which was followed by a fall from ~8630 to 8520 cal yr *** expanded transgression occurred between ~8520 and 7900 cal yr *** time intervals from ~8520 to 8200 cal yr *** from ~8080 to 7900 cal yr *** marked by peak *** ~7900 to 5560 cal yr B.P.,the core site generally showed a reduced marine influence and enhanced freshwater input.A fluvial environment developed from ~5560 to 3100 cal yr B.P.,and was succeeded by an alluvial plain setting.

关键词： Late Quaternary microfauna shell stable isotopes palaeoenvironment Pearl River Delta

Changes in ocular surface status and dry eye symptoms following femtosecond laser-assisted cataract surgery

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International Journal of Ophthalmology(English edition) 2019年第7期12卷 1122-1126页

作者： Rui-Hong Ju yun Chen Hai-Song Chen Wei-jian Zhou Wei Yang Zhen-De Lin Zhe-Ming wu Guangzhou Aier Eye Hospital

AIM: To observe the changes in ocular surface and the dry eye symptoms following femtosecond laser-assisted cataract surgery(FLACS). METHODS: Patients with no eye signs or symptoms in Guangzhou Aier Eye Hospital between October 2017 and September 2018, who underwent FLACS and intraocular lens(IOL) implantation for age-related cataract were enrolled. Tear film stability assessed with OCULUS Keratograph 5 M, Schirmer’s I test(SIT), and corneal fluorescein staining(CFS) were evaluated before and after surgery at 1 d, 1 wk, 1, and 3 mo in order. Ocular Surface Disease Index scores(OSDI) and Subjective Symptom Questionnaires(SSQs) were recorded at the same time ***: Thirty-eight eyes of 38 patients were enrolled. The noninvasive tear film break-up time(first break-up time and average break-up time) decreased in a peak at the 1 wk visit, and then increased to basic levels at 1 mo. The tear meniscus height(TMH) increased transiently at 1 d, and declined in the following 3 mo visits. The SIT had a transient increase at 1 d(P=0.357) and a decrease at 1 wk and 1 mo(both P<0.05) but returned to the preoperative levels at 3 mo after surgery(P=0.062). CFS scores were significantly improved compared with those before surgery, and had a statistical difference(P<0.05). OSDI scores and SSQs after surgery were obviously higher, and had a statistical difference(P<0.001) but didn’t return to the basic level by 3 mo. CONCLUSION: Dry eye signs and symptoms can occur immediately following FLACS and have a peak severity on day 7 postoperatively. Most signs of dry eye can return to preoperative basic levels within 3 mo postoperatively. However, all cases can not recover from CFS and dry eye symptoms at 3 mo postoperatively.

关键词： ocular surface dry eye tear film femtosecond laser-assisted cataract surgery

Transgenic Rice Plants Harboring Genomic DNA from Zizania latifolia Confer Bacterial Blight Resistance

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Rice science 2011年第1期18卷 17-22页

作者： SHEN Wei-wei SONG Cheng-li CHEN Jie FuYaping wu jian-li jianG Shao-mei College of Life Sciences Jiangxi Normal University Nanchang 330022 China China National Rice Research Institute Hangzhou 310006 China jiangxi University of Finance and Economics Nanchang 330013 China

Based on the sequence of a resistance gene analog FZ14 derived from Zizania latifolia （Griseb.）, a pair of specific PCR primers FZ14P1/FZ14P2was designed to isolate candidate disease resistance gene. The pooled-PCR approach was adopted using the primer pair to screen a genomic transformation-competent artificial chromosome （TAC） library derived from Z. latifolia. A positive TAC clone （ZR1） was obtained and confirmed by sequence analysis. The results indicated that ZR1 consisted of conserved motifs similar to P-loop （kinase la）, kinase 2, kinase 3a and GLPL （Gly-Leu-Pro-Leu）, suggesting that it could be a portion of NBS-LRR type of resistance gene. Using Agrobacterium-mediated transformation of Nipponbare mature embryo, a total of 48 independent transgenic To plants were obtained. Among them, 36 plants were highly resistant to the virulent bacterial blight strain PXO71. The results indicate that ZR1 contains at least one functional bacterial blight resistance gene.

关键词： Zizania latifolia transformation-competent artificial chromosome library resistance-gene analog Oryza sativa bacterial blight resistance gene transfer

准噶尔盆地南缘西段侏罗系—白垩系沉积体系差异演化变迁过程

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地层学杂志 2024年第2期48卷 183-200页

作者：高崇龙王剑罗正江刘明任影万照飞许楚昊董志武许瑞李易伦中国石油大学(北京)克拉玛依校区石油学院新疆克拉玛依834000 中国石油新疆油田公司实验检测研究院新疆克拉玛依834000 中国石油东方地球物理公司研究院地质研究中心河北涿州072750

新疆准噶尔盆地南缘西段(准南西段)为一典型的多旋回叠合盆地,其中侏罗系—白垩系由于经历了多期强烈构造运动的叠加改造,且山前遭受不同程度的抬升剥蚀,使得侏罗系—白垩系沉积体系特征及其差异变迁过程与区域古气候和古构造演变关系... 详细信息

新疆准噶尔盆地南缘西段(准南西段)为一典型的多旋回叠合盆地,其中侏罗系—白垩系由于经历了多期强烈构造运动的叠加改造,且山前遭受不同程度的抬升剥蚀,使得侏罗系—白垩系沉积体系特征及其差异变迁过程与区域古气候和古构造演变关系仍不清楚。针对这一情况,本研究综合利用钻测井、地震、岩心、野外露头及实验分析资料等,对准南西段侏罗系—白垩系沉积体系类型及特征进行精细厘定,在此基础上结合古气候和古构造演变历史,恢复侏罗系—白垩系沉积体系差异演化变迁过程及成因。研究结果表明:准南西段侏罗系—白垩系发育冲积扇—扇三角洲、辫状河—辫状河三角洲及滨浅湖—半深湖、深湖沉积体系;早侏罗世—中侏罗世早期,准南西段为湿润气候,在中侏罗世晚期—晚侏罗世变为干—湿交替直至极度干旱气候,而在早白垩世再次转变为湿润气候;古构造格局则呈现坳陷—压扭—坳陷的周期性演变,而燕山多幕构造活动使得周缘山体在中侏罗世晚期至早白垩世发生持续的构造抬升。整体而言,准南西段在早侏罗世—中侏罗世早期为湿润泛湖坳陷湖盆,以辫状河三角洲和滨浅湖沉积体系为主,湖平面周期性波动,湖水深度和湖泊范围变化大;在中侏罗世晚期—晚侏罗世为干—湿交替至极旱的压扭湖盆,以冲积扇—扇三角洲、辫状河—辫状河三角洲及滨浅湖沉积为主,湖平面快速震荡直至湖面大幅萎缩,湖水浅;早白垩世为湿润环境下的统一坳陷湖盆,以扇三角洲及辫状河三角洲沉积为主,古地貌平坦且湖侵迅速,湖水深度和范围快速增大。本研究为准南西段侏罗系—白垩系油气勘探实践中烃源岩及储层评价和预测提供了重要的科学依据。

关键词：新疆北部侏罗纪白垩纪沉积体系演化古气候古构造格局