检索结果-南通市图书馆

Early Cambrian syndepositional structure of the northern Tarim Basin and a discussion of Cambrian subsalt and deep exploration

在线全文

学校读者我要写书评

暂无评论

Petroleum Exploration and Development 2019年第6期46卷 1141-1152页

作者： GUAN Shuwei zhang chunyu REN Rong zhang Shuichang WU Lin WANG Lei MA Peiling HAN Changwei Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China Korla Branch of Geophysical Research Institute BGP Inc.Korla 841000China

Using field geological survey,drilling and seismic data,combined with the study of regional tectonic evolution and structural deformation,as well as lithological and sedimentary analysis,we reconstructed the basin filling process and paleo-geography of north Tarim Basin in Early Cambrian,aiming to analyze the factors controlling the distribution and spatial architecture of the subsalt reservoir and source units and to define the favorable exploration *** Late Sinian tectonic activities in the northern Tarim Basin were characterized by different patterns in different areas,which controlled the sedimentary pattern in the Early *** boundary faults of Nanhuaian rift basin in the south slope of Tabei uplift and the north slope of Tazhong uplift became reactivated in the Early Cambrian,forming two NEE and EW striking subsidence centers and depocenters,where the predicted thickness of the Yurtusi Formation could reach 250 *** the Xiaoerbulake period,the weak rimmed platform was developed in the hanging wall of syndepositional *** the Nanhuaian rift system in the Tadong and Manxi areas were uplifted and destroyed in the Late Sinian,and appeared as gently slope transiting toward the subsidence center in the Early *** former had the sedimentary features of hybrid facies platform and the latter had the sedimentary features of ramp *** black shale of the Yurtus Formation in the footwall of syndepositional fault and the reef bank of Xiaoerbulake Formation platform margin in the hanging wall in Early Cambrian constitute a predicable source-reservoir *** activity intensity of syndepositional fault controlled the thickness of black shale and the scale of the reef *** is suggested carrying out high accuracy seismic exploration to determine the location of Early Cambrian syndepositional faults,on this basis,to search the reef bank of Xiaoerbulake Formation along the faults westward,and then drill risk exploration we

关键词： Early Cambrian syndepositional structure bedded chert paleogeography subsalt exploration Lower Cambrian Yurtusi Formation Tarim Basin prototype basin

Distribution Prediction of Middle-deep Lacustrine Source Rocks in Eocene Wenchang Formation in the Kaiping Sag,Pearl Mouth Basin

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2021年第1期95卷 248-258页

作者： XIONG Lianqiao XIE Xiaojun ZHAO Zhao zhang chunyu WANG Long LIAO Jihua CAI Lulu XU Wei CNOOC Research Institute Co. Ltd.Beijing 100028China

Oil and gas shows are rich in drilling wells in Kaiping sag,however,large oilfield was still not found in this *** a long time,it is thought that source rocks were developed in the middle-deep lacustrine facies in the Eocene Wenchang Formation,while there is no source rocks that in middle-deep lacustrine facies have been found in *** of Wenchang Formation is big and reservoirs with good properties could be found in this *** and scale of source rock are significant for further direction of petroleum *** characterization of middle-deep lacustrine facies is the base for source rock *** on the sedimentary background,fault activity rate,seismic response features,and seismic attributes were *** limited classification method and multi-attributes neural network deep learning method were used for predicting of source rock distribution in Wenchang *** is found that during the deposition of lower Wenchang Formation,activity rate of main fault controlling the sub sag sedimentation was bigger than 100 m/Ma,which formed development background for middle-deep lacustrine *** with the seismic response of middle-deep lacustrine source rocks developed in Zhu I depression,those in Kaiping sag are characterized in low frequency and good *** RGB frequency decomposition,areas with low frequency are main distribution parts for middle-deep lacustrine *** frequency,instantaneous frequency,and coherency attributes of seismic could be used in no limited classification method for further identification of middle-deep lacustrine *** on the limitation of geology knowledge,multi-attributes of seismic were analyzed through neural network deep learning *** of middle-deep lacustrine facies in the fourth member of Wenchang Formation is oriented from west to east and is the *** of the middle-deep lacustrine facies in that member is 154 km^(2)and

关键词： neural network seismic classification middle-deep lacustrine facies Eocene Wenchang Formation Kaiping sag

Seed dispersal and seedling recruitment of trees at different successional stages in a temperate forest in northeastern China

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2014年第4期7卷 337-346页

作者： Lie Chen Lei Wang Yeerjiang Baiketuerhan chunyu zhang Xiuhai Zhao Klaus von Gadow Key Laboratory for Forest Resources&Ecosystem Processes of Beijing Beijing Forestry UniversityNo.35 Qinghua East RoadHaidian DistrictBeijing 100083China College of Forestry and Horticulture Xinjiang Agricultural UniversityNo.42 Nanchang RoadShayibake DistrictUrumqi 830052China Faculty of Forestry and Forest Ecology Georg-August-University GöttingenBüsgenweg 5D-37077 GöttingenGermany

spatial distribution of adult trees in a forest community is determined by patterns of both seed dispersal and seedling *** objectives of our study were to understand the processes of seed dispersal and seedling recruitment of dominant tree species in a temperate forest of northeastern China and to identify the factors constraining seed dispersal and seedling establishment at different stages of forest *** During three summer and autumn sessions between 2006 and 2008,altogether 113080 seeds from 22 different tree species were collected in three large field plots representing different for-est types in the Changbai mountain region of northeastern *** spatial distribution of seed abundance was analyzed using a syrjala *** success of nine major tree species was assessed using variables defining‘limitations’in‘seeds’and‘seed-ling establishment’.Important Findings We found that seed production fluctuated between years and varied greatly with forest *** tree species,Acer spp.,Fraxinus man-dshurica,Tilia amurensis and Betula spp.,had the greatest seed pro-duction and the widest range of seed dispersal,whereas Quercus mongolica showed the most sustained seed production *** spatial patterns of seed abundance differed significantly among forest types and *** tree species investigated in this study differed in the degree of seed limitation,as well as in limitation of seedling *** were both negative and positive correlations between seed density and seedling density,depending on site and parental tree *** of 16 tree species were found in the Populus davidiana-Betula platyphylla forest(PbF)plot,11 in the conifer and broad-leaved mixed forest(CbF)plot but only 8 in the broad-leaved-Korean pine mixed forest(bKF)*** number of seed-contributing species was not only greater in the secondary forests(CbF and PbF plots)than in the primary forest(bKF plot)but was also more variable during t

关键词： seed dispersal seed limitation dispersal limitation establishment limitation mixed broad-leaved-conifer forest

4种无患子科植物的SMXL家族全基因组鉴定、进化及DlSMXLs在龙眼体胚发生过程中的表达分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

东南园艺 2024年第1期12卷 17-29页

作者：陈莹张春渝许小琼林玉玲赖钟雄福建农林大学园艺植物生物工程研究所福建福州350002

【目的】为研究无患子科SMXL家族的生物学特性提供理论参考,深入探究该基因家族在无患子科植物非生物胁迫响应中的调控机制。【方法】基于模式植物拟南芥SMXL家族的氨基酸序列,利用TBtools对龙眼、红毛丹、无患子和荔枝的SMXL家族成员... 详细信息

【目的】为研究无患子科SMXL家族的生物学特性提供理论参考,深入探究该基因家族在无患子科植物非生物胁迫响应中的调控机制。【方法】基于模式植物拟南芥SMXL家族的氨基酸序列,利用TBtools对龙眼、红毛丹、无患子和荔枝的SMXL家族成员进行全基因组鉴定,Expasy、MEGA11等软件用于4种无患子科植物的进化和功能分析,同时利用龙眼转录组数据进行体胚发生早期阶段的表达分析。【结果】4种无患子科植物共鉴定出48个SMXL家族成员,其中龙眼11个、红毛丹11个、无患子9个以及荔枝17个。依据拟南芥SMXL家族成员的分类,将4种无患子科SMXL家族成员分为5个亚族且亚细胞定位于叶绿体、细胞核、细胞质或线粒体。蛋白互作分析表明,无患子科SMXL家族成员可能与多种蛋白存在互作关系,主要分为两类:一种是与受到非生物胁迫时大量表达的热休克蛋白(HSPs)或CLPs互作;另一种是与独角金内酯受体蛋白D14、karrikins受体蛋白KAI2和调控SL信号传导途径的蛋白MAX2进行互作。启动子顺式作用元件分析表明,4种无患子科植物SMXL家族成员存在较多的光响应元件、抗氧化反应元件(ARE)和脱落酸响应元件(ABRE)等,推测该基因家族广泛参与非生物胁迫响应。此外,DlSMXL家族成员在龙眼体胚发生早期存在5种不同的表达模式,其中DlSMXL4基因家族成员在胚性愈伤组织(EC)、不完全胚性紧实结构(ICpEC)和球形胚(GE)阶段相较其他成员呈现较高表达。基于5-氮胞苷、PEG、SL、光、温度和各种激素处理龙眼EC时期转录组数据分析可知,龙眼DlSMXL5在干旱、GR24、黑暗和高温处理下表达量均明显增加,推测该成员能够通过响应植物激素和应激胁迫维持胚性愈伤组织形态。其次DlSMXL8在5-氮胞苷处理时表达上调,推测其可能参与DNA甲基化在龙眼体胚发生过程中发挥作用。【结论】4种无患子科植物SUPPRESSOR OF MAX2-LIKE(SMXL)家族除了在植物生长发育过程种发挥重要的作用,同时还广泛参与植物非生物胁迫调控过程。本研究结果为无患子科植物中SMXL的分类和生物学功能提供了理论依据,并为SMXL在龙眼早期体细胞胚胎发生中的功能验证提供了更好的认识。

关键词：无患子科 SMXL基因家族全基因组鉴定进化分析龙眼早期表达分析

维普期刊数据库博看期刊

Evaluating alternative hypotheses behind biodiversity and multifunctionality relationships in the forests of Northeastern China

在线全文

学校读者我要写书评

暂无评论

Forest Ecosystems 2022年第3期9卷 301-310页

作者： Qingmin Yue Minhui Hao Yan Geng Xuerui Wang Klaus von Gadow chunyu zhang Xiuhai Zhao Lushuang Gao Research Center of Forest Management Engineering of State Forestry and Grassland Administration Beijing Forestry UniversityBeijing100083China Faculty of Forestry and Forest Ecology Georg-August-UniversitatGöttingenD-37077Germany Faculty of AgriSciences Stellenbosch UniversityMatieland7600South Africa

Background:The importance of biodiversity in maintaining multiple ecosystem functions has been widely ***,the specific mechanisms affecting biodiversity and ecosystem multifunctionality(BEMF)relationships in forests are largely *** is particularly evident for the macroscale of a large forested ***:Based on 412 one-tenth hectare field plots distributed over forested areas across northeastern China,we evaluated three alternative hypotheses explaining the relationships between BEMF,namely:niche complementarity,mass ratio,and vegetation quantity *** used Rao's quadratic entropy and community weighted mean trait values to quantify forest“biodiversity”.These two variables represent two complementary aspects of functional properties,which are in line with niche complementary and mass ratio effects,***:Ecosystem multifunctionality was negatively associated with the community weighted mean values of acquisitive traits(a proxy of mass ratio effect).Rao's quadratic entropy(a proxy of niche complementarity)had no relationship with ecosystem *** stand biomass greatly increased ecosystem multifunctionality,which is in line with the vegetation quantity *** results confirm that in the temperate forests of northeastern China,the relationship of BEMF was primarily affected by vegetation quantity,followed by mass ratio ***:The results of this study contribute to a better understanding of the main drivers of ecosystem multifunctionality in forest *** results of this study provide additional evidence to support the vegetation quantity and mass ratio hypotheses in forest ecosystems.

关键词： Biodiversity and ecosystem multifunctionality Biomass Functional traits Mass ratio effect Niche complementarity effect Vegetation quantity effect

云南省文山州2013-2022年新发麻风患者残疾情况及影响因素分析

在线全文

学校读者我要写书评

暂无评论

中国皮肤性病学杂志 2024年第9期38卷 994-999页

作者：甘丽平陶思铮杨溪张春雨尹丽娇罗红叶李玉叶昆明医科大学第一附属医院皮肤性病科云南昆明650032 文山壮族苗族自治州皮肤病防治所皮肤性病科云南文山663000

目的了解文山州新发麻风病例残疾情况及其影响因素,为减少麻风残疾发生、减小麻风危害提供理论依据。方法以云南省文山州2013—2022年确诊的所有麻风患者为研究对象,收集患者的流行病学信息及病例资料。建立Excel数据库,采用SPSS26.0软... 详细信息

目的了解文山州新发麻风病例残疾情况及其影响因素,为减少麻风残疾发生、减小麻风危害提供理论依据。方法以云南省文山州2013—2022年确诊的所有麻风患者为研究对象,收集患者的流行病学信息及病例资料。建立Excel数据库,采用SPSS26.0软件对数据进行分析。结果共收集366例新发麻风病例资料,其中64例发生残疾,残疾率为17.49%,1级残疾率6.28%,2级残疾率11.20%。目前皮肤科门诊发现仍为麻风患者的主要发现方式(49.80%),诊断延迟期>2年、少菌型麻风(PB)是麻风患者发生残疾的危险因素(P2年及PB患者有更高的残疾发生风险,医疗机构应加强对麻风疑似症状的筛查,早发现、早诊断、早治疗,减少麻风延迟诊断,降低新发麻风发生残疾比例,提高麻风患者生活质量。

关键词：云南文山麻风残疾影响因素

在线全文

学校读者我要写书评

暂无评论

瘤型麻风一例

中国麻风皮肤病杂志 2024年第11期40卷 759-760页

作者：周丽娟何乔晶张春雨尹丽娇文山州皮肤病防治所(文山州皮肤病专科医院) 云南文山663099

临床资料,患者,男,27岁,壮族。因“全身皮肤无痒痛结节1年余,面部肿胀脱眉半年”来诊。患者自诉于2022年6月无明显原因及诱因在左上臂皮肤出现数个结节,无自觉症状,未引起重视。1个月后结节逐渐增多,蔓延至躯干、四肢皮肤,未诊治。2023... 详细信息

临床资料,患者,男,27岁,壮族。因“全身皮肤无痒痛结节1年余,面部肿胀脱眉半年”来诊。患者自诉于2022年6月无明显原因及诱因在左上臂皮肤出现数个结节,无自觉症状,未引起重视。1个月后结节逐渐增多,蔓延至躯干、四肢皮肤,未诊治。2023年7月开始面部出现结节、浸润,伴随眉毛、睫毛脱落,为求进一步诊治,于2024年2月到当地县人民医院就诊。患者自患病以来精神、饮食、睡眠可,大小便正常,体重无明显变化。患者传染来源为家外传染,邻居为瘤型麻风康复者,患者与其有不同程度的接触,考虑为主要的传染来源。

关键词：瘤型麻风四肢皮肤左上臂睫毛脱落康复者传染来源后结节临床资料

非洲猪瘟病毒p30蛋白在本氏烟草中的表达及其抗体间接ELISA检测方法的建立

在线全文

学校读者我要写书评

暂无评论

中国兽医学报 2024年第1期44卷 12-19,28页

作者：刘悦魏天张春雨张建峰王成宇张芳毓朱日宁鞠安琪王思月曲磊张守峰扈荣良梁静王永志吉林农业大学生命科学学院吉林长春130118 吉林省农业科学院畜牧兽医研究所吉林长春130124 中国农业科学院长春兽医研究所吉林长春130122

为建立一种非洲猪瘟病毒(African swine fever virus,ASFV)抗体间接ELISA检测方法,利用马铃薯Y病毒(potato virus Y,PVY)介导的植物生物反应器在本氏烟草中表达ASFV p30蛋白,并以表达的蛋白作为包被抗原,对间接ELISA各反应条件进行优化... 详细信息

为建立一种非洲猪瘟病毒(African swine fever virus,ASFV)抗体间接ELISA检测方法,利用马铃薯Y病毒(potato virus Y,PVY)介导的植物生物反应器在本氏烟草中表达ASFV p30蛋白,并以表达的蛋白作为包被抗原,对间接ELISA各反应条件进行优化。依据ASFV SY-18株的CP204L(p30)基因序列,按照本氏烟草密码子的偏好性,对p30基因(231~536 bp)的核苷酸序列进行优化、人工合成及克隆,通过In-Fusion连接技术将扩增的p30基因插入到PVY基因组的P1和HC-Pro基因之间,构建PVY-p30重组病毒质粒,以摩擦的方式将质粒接种本氏烟草叶片,14 d后,通过RT-PCR和Western blot分析目的基因的转录和重组蛋白的表达情况,并利用Ni-NTA-琼脂糖亲和层析柱纯化本氏烟草中表达的p30重组蛋白,Western blot分析p30重组蛋白的纯化效果和反应原性,将纯化后的p30重组蛋白作为包被抗原,建立ASFV抗体间接ELISA检测方法。结果显示,构建的PVY-p30重组病毒能够系统性侵染本氏烟草;p30重组蛋白能够在本氏烟草叶片中表达,且具有良好的反应原性;纯化的p30重组蛋白效果较好,能够被p30蛋白单克隆抗体识别。建立的ELISA检测方法最佳反应条件为抗原质量浓度0.5 mg/L,37℃包被1 h;待检血清1∶400倍稀释,37℃孵育0.5 h;HRP标记二抗37℃孵育0.5 h;TMB室温避光显色10 min;阴阳性临界值为0.461。当ASFV阳性血清稀释度为1∶2560时,仍检测为阳性,具有较高的敏感性;该方法与其他常见病阳性血清不发生交叉反应,能够特异性地检测ASFV抗体;重复性试验显示批内变异系数小于5%,批间变异系数小于10%;该方法与ASFV商品化检测试剂盒相比,总体符合率为85.0%。结果表明,本研究构建的PVY-p30重组病毒载体能介导p30重组蛋白在本氏烟草中表达,以植物表达的p30重组蛋白为抗原建立的ASFV抗体间接ELISA检测方法可用于疾病的临床检测及疫情监测,同时为可饲疫苗的研发提供了基础材料。

关键词：间接ELISA 非洲猪瘟病毒马铃薯Y病毒植物生物反应器 p30蛋白

Visualization of Macrophase Separation and Transformation in Immiscible Polymer Blends

在线全文

学校读者我要写书评

暂无评论

CCS Chemistry 2023年第3期5卷 718-728页

作者： Zhiyuan Wu chunyu zhang Youliang Zhu Zhongyuan Lu Heng Liu Bin Xu Xuequan zhang Wenjing Tian State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin 130012 Key Laboratory of Rubber-Plastics Ministry of EducationShandong Provincial Key Laboratory of Rubber-PlasticsSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042

Identification and visualization of phase structures inside polymer blends are of critical importance in the understanding of their intrinsic structure and ***,the direct optical observation of the individual component phase in a dense bulk material poses a significant ***,three-dimensional fluorescence imaging of phase separation and realtime visualization of phase transformation in immiscible polymer blends of polypropylene and polystyrene is realized through multiphoton laser scanning *** to the specific fluorescence behavior of the cyanostyrene derivative 2-(4-bromophenyl)-3-(4-(4-(diphenylamino)styryl)phenyl)fumaronitrile,the high-contrast imaging of the macrophase of the component polymer in two and three dimensions with a maximum depth of 140μm and a high signal-to-noise ratio of 300 can be *** spectroscopic and structural studies reveal that the distinctive fluorescence features of each phase domain should originate from the formation of a completely different aggregate between probes and component ***,visualizations of the internal morphology deformation and macrophase transformation were realized by employing a stretched dumbbell sample under constant tension.

关键词： fluorescent probes fluorescent selectivity phase separation multiphoton laser scanning microscopy visualization