检索结果-南通市图书馆

Productivity Prediction Model of Perforated Horizontal Well Based on Permeability Calculation in Near-Well High Permeability Reservoir Area

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Engineering 2024年第1期121卷 59-75页

作者： Shuangshuang Zhang Kangliang Guo xinchen gao Haoran Yang Jinfeng Zhang Xing Han College of the Earth Science Yangtze UniversityWuhan430100China PetroChina Changqing Oilfield Fifth Oil Production Plant Xi’an710201China Sinopec Jianghan Oilfield Information Center Wuhan430100China

To improve the productivity of oil wells,perforation technology is usually used to improve the productivity of horizontal wells in oilfield *** the perforation operation,the perforation channel around the wellbore will form a near-well high-permeability reservoir area with the penetration depth as the radius,that is,the formation has different permeability characteristics with the perforation depth as the dividing ***,the permeability is measured by the permeability tester,but this approach has a high workload and limited *** this paper,according to the reservoir characteristics of perforated horizontal wells,the reservoir is divided into two areas:the original reservoir area and the near-well high permeability reservoir *** on the theory of seepage mechanics and the formula of open hole productivity,the permeability calculation formula of near-well high permeability reservoir area with perforation parameters is *** to the principle of seepage continuity,the seepage is regarded as the synthesis of two directions:the horizontal plane elliptic seepage field and the vertical plane radial seepage field,and the oil well productivity prediction model of the perforated horizontal well is established by *** model comparison demonstrates that the model is reasonable and *** calculate and analyze the effect of oil well production and the law of influencing factors,actual production data of the oilfield are substituted into the oil well productivity *** can effectively guide the technical process design and effect prediction of perforated horizontal wells.

关键词： Perforated horizontal well permeability productivity model sensitivity analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

外源钙对苍术幼苗生理特性的影响

亚热带农业研究 2022年第4期18卷 246-251页

作者：赫卫颜龙高欣晨贵州中医药大学药学院贵州贵安550025

[目的]探明外源钙对苍术幼苗生长及生理指标的影响,为苍术栽培环境的选择提供依据。[方法]以苍术幼苗为试材,分别喷施5、10、15、20 mmol·L^(-1)CaCl_(2)溶液,以未喷施为对照(CK)。比较不同处理下苍术幼苗根茎与叶的生长及生理指标。[... 详细信息

[目的]探明外源钙对苍术幼苗生长及生理指标的影响,为苍术栽培环境的选择提供依据。[方法]以苍术幼苗为试材,分别喷施5、10、15、20 mmol·L^(-1)CaCl_(2)溶液,以未喷施为对照(CK)。比较不同处理下苍术幼苗根茎与叶的生长及生理指标。[结果]10 mmol·L^(-1)CaCl_(2)处理苍术幼苗根茎与叶的鲜质量比(1.92)及叶绿素含量(2.16 mg·g^(-1))均最大,且与CK差异达显著水平;外源钙可提高苍术幼苗根茎和叶的可溶性蛋白含量,5、10、15和20 mmol·L^(-1)CaCl_(2)处理根茎可溶性蛋白含量分别比CK提高了39.72%、36.39%、23.87%、25.44%,叶的可溶性蛋白含量分别比CK提高了25.28%、47.23%、15.26%、23.52%;适量浓度的外源钙可显著提高根茎(5、10和15 mmol·L^(-1)CaCl_(2)溶液)和叶(10、20 mmol·L^(-1)CaCl_(2)溶液)的可溶性糖含量,并降低黄酮含量。[结论]低浓度(10 mmol·L^(-1)CaCl_(2)溶液)外源钙可增强苍术幼苗的光合作用以及抗氧化和渗透调节能力,从而增强其抗逆性。

关键词：苍术外源钙生理指标

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

外源水杨酸对苍术生长与生理特性的影响

贵州农业科学 2023年第7期51卷 56-61页

作者：赫卫颜龙高欣晨贵州中医药大学药学院贵州贵阳550025

【目的】探明喷施外源水杨酸时苍术幼苗生长与生理特性的变化规律,为提高其药效和抗逆性提供科学依据。【方法】采用叶面喷施方法研究不同浓度(0 mmol/L、0.5 mmol/L、1.0 mmol/L、2.0 mmol/L、4.0 mmol/L和8.0 mmol/L)水杨酸对苍术幼... 详细信息

【目的】探明喷施外源水杨酸时苍术幼苗生长与生理特性的变化规律,为提高其药效和抗逆性提供科学依据。【方法】采用叶面喷施方法研究不同浓度(0 mmol/L、0.5 mmol/L、1.0 mmol/L、2.0 mmol/L、4.0 mmol/L和8.0 mmol/L)水杨酸对苍术幼苗根茎/叶鲜重比、叶绿素、可溶性糖、黄酮和可溶性蛋白含量等生长和生理特性的影响。【结果】喷施外源水杨酸显著增加叶绿素含量和叶绿素a/b值,对可溶性糖含量没有显著影响。随水杨酸浓度的增加,叶绿素含量呈先升后降趋势,叶绿素a/b值呈上升趋势。喷施2.0 mmol/L水杨酸,叶绿素含量和叶绿素a/b值分别为2.35 mg/g FW和2.88,显著高于对照(1.26 mg/g FW和2.02)。一定浓度的外源水杨酸可增加苍术幼苗的根茎/叶鲜重比,降低黄酮含量,4.0 mmol/L水杨酸处理的根茎/叶鲜重比达最大,为1.58,叶黄酮含量最低,为6.41 mg/g。可溶性蛋白含量随水杨酸浓度的增加呈先升后降再升趋势,4.0 mmol/L水杨酸处理根茎和叶的可溶性蛋白含量分别为10.30 mg/g和8.96 mg/g,显著低于2.0 mmol/L处理(11.21 mg/g和10.17 mg/g)和8.0 mmol/L处理(12.39 mg/g和13.15 mg/g)。【结论】叶面喷施4.0 mmol/L水杨酸可以显著增加根茎/叶鲜重比和根茎的可溶性糖含量,是收获根状茎的适宜浓度;喷施2.0 mmol/L水杨酸可以显著增加叶的叶绿素、可溶性糖和可溶性蛋白含量,是开发叶药食价值的适宜浓度。

关键词：苍术水杨酸生理指标叶绿素黄酮可溶性蛋白可溶性糖

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

亚精胺生物活性及其开发应用的研究进展

中草药 2024年第16期55卷 5714-5722页

作者：任佳丽於天高欣晨陈位三赵盈李先宽於洪建天津中医药大学天津301617 甘李药业股份有限公司北京101100 合肥和晨生物科技有限公司安徽合肥230011

亚精胺是一类天然的多胺,普遍存在于鱼类、家禽等动物,谷物、蔬菜、中草药等植物以及乳酸菌、双歧杆菌等微生物细胞中,具有抗衰老、抗氧化、抗炎、心血管保护等多种药理作用。目前亚精胺在保健品、医药、植物生理等领域得到国内外的广... 详细信息

亚精胺是一类天然的多胺,普遍存在于鱼类、家禽等动物,谷物、蔬菜、中草药等植物以及乳酸菌、双歧杆菌等微生物细胞中,具有抗衰老、抗氧化、抗炎、心血管保护等多种药理作用。目前亚精胺在保健品、医药、植物生理等领域得到国内外的广泛研究。通过查阅亚精胺国内外相关文献资料并结合文献计量学,对亚精胺的植物源、动物源性食品、体内合成等多种来源,体内吸收、代谢、分布,药理作用及开发应用进行系统综述,以期为亚精胺在药品、保健品、化妆品等方面的开发应用提供参考。

关键词：亚精胺多胺代谢文献计量学开发应用

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

中国早第三纪海陆过渡相

石油与天然气地质 1982年第4期 343-350页

作者：陈绍周高兴辰丘东洲地质矿产部石油地质综合大队

我国下第三系发育齐全,分布广泛,岩相类型繁多。我们把研究区内既非正常海相,又非正常陆相,位于海陆之间的一系列沉积,称为海陆过渡相,包括海岸相、海侵湖相和海漫湖相。研究这套过渡相的沉积特征,及其纵、横向上的展布规律,对于阐明中... 详细信息

我国下第三系发育齐全,分布广泛,岩相类型繁多。我们把研究区内既非正常海相,又非正常陆相,位于海陆之间的一系列沉积,称为海陆过渡相,包括海岸相、海侵湖相和海漫湖相。研究这套过渡相的沉积特征,及其纵、横向上的展布规律,对于阐明中国第三纪油气的聚集规律和预测中国第三纪油气远景,具有一定意义。

关键词：海陆过渡相早第三纪老第三纪海侵海进始新世第三纪阜宁组二段苏北盆地江苏湖相沉积沉积相东台坳陷陆相沉积非海相沉积渤海湾盆地沉积特征中华人民共和国

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

外源水杨酸对高钙胁迫下苍术生长生理的影响

热带农业科学 2023年第6期43卷 24-28页

作者：罗娟赫卫高欣晨颜龙罗梅潘嘉仪贵州中医药大学药学院贵州贵阳550025

为探究外源水杨酸对高钙胁迫的缓解作用,以苍术幼苗为试材,喷施40 mmol/L钙离子,再喷施2 mmol/L水杨酸处理,高钙胁迫7 d后统计鲜重,进行生理指标测定。高钙胁迫增加了苍术叶55.60%和根茎13.00%的可溶性蛋白含量,降低了叶片叶绿素含量,由... 详细信息

为探究外源水杨酸对高钙胁迫的缓解作用,以苍术幼苗为试材,喷施40 mmol/L钙离子,再喷施2 mmol/L水杨酸处理,高钙胁迫7 d后统计鲜重,进行生理指标测定。高钙胁迫增加了苍术叶55.60%和根茎13.00%的可溶性蛋白含量,降低了叶片叶绿素含量,由2.16 mg/g·FW降至1.47 mg/g·FW,还降低了根茎20.31%的黄酮含量和8.69%可溶性糖含量。相比高钙处理,高钙胁迫下施用外源水杨酸提高了苍术根茎/叶鲜重比11.59%,有效抑制叶绿素降解,叶绿素含量提高到2.05 mg/g·FW,显著降低叶的可溶性蛋白含量,由7.63 mg/g降至4.94 mg/g,显著增加了根茎29.53%黄酮含量和44.20%可溶性糖含量。外源水杨酸能有效缓解高钙胁迫对苍术生长生理的损害,提高其光合速率以及抗氧化和渗透调节能力,帮助其适应高钙环境。

关键词：苍术高钙胁迫水杨酸生理指标

维普期刊数据库博看期刊

同方期刊数据库

Phosphorene-Based Heterostructured Photocatalysts

在线全文

学校读者我要写书评

暂无评论

Engineering 2021年第7期7卷 991-1001页

作者： Yun Zheng Yilin Chen Bifen gao Bizhou Lin xinchen Wang Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing College of Materials Science and EngineeringHuaqiao UniversityXiamen 361021China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Semiconductor photocatalysis is a potential pathway to solve the problems of global energy shortage and environmental *** phosphorus(BP)has been widely used in the field of photocatalysis owing to its features of high hole mobility,adjustable bandgap,and wide optical absorption ***,pristine BP still exhibits unsatisfactory photocatalytic activity due to the low separation efficiency of photoinduced charge *** recent years,the construction of heterostructured photocatalysts based on BP has become a research hotspot in photocatalysis with the remarkable improvement of photoexcited charge-separation ***,progress on the design,synthesis,properties,and applications of BP and its corresponding heterostructured photocatalysts is ***,the photocatalytic applications of BP-based heterostructured photocatalysts in water splitting,pollutant degradation,carbon dioxide reduction,nitrogen fixation,bacterial disinfection,and organic synthesis are *** and challenges for the exploration of advanced BP-based heterostructured photocatalysts are *** review will promote the development and applications of BP-based heterostructured photocatalysts in energy conversion and environmental remediation.

关键词： Phosphorene Heterostructure Photocatalysis Water splitting Pollutant degradation

Improvement of Formation,Microstructure and Mechanical Properties of TIG Welded TC4 Titanium Alloy by Ultrasonic Coaxial Radiation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第12期37卷 2045-2056页

作者： Yihao gao Boqiao Ren Yunhao Chen xinchen Sui Xiaohui Zhao Chenglei Fan Chao Chen Key Laboratory of Automobile Materials School of Materials Science and EngineeringJilin UniversityChangchun130025China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China

In this study,the effects of ultrasonic coaxial assisted TIG welding(U-TIG)on the formation,microstructure,and mechanical properties of TC4 titanium alloy welded joints were *** results indicated that at optimal ultrasonic power and welding current settings,remarkable improvements of welded joint were ***,the weld depth-to-width ratio increased by 267%compared to conventional TIG welding,reaching ***,the microhardness of the welded seam increased by 53%,reaching 550.1 HV,while the tensile strength of the welded joint rose to 1197.7 MPa,representing a 12.2%*** compressing effect of ultrasound concentrates the energy of the arc,thereby improving the penetration depth of the welded *** addition,ultrasonic cavitation plays a crucial role in refining the grain structure of the weld seam,consequently enhancing its strength.

关键词： TC4 alloy Ultrasonic coaxial assisted TIG welding(U-TIG) Arc shape Microstructure Mechanical properties

Identification and verification of aging-related lncRNAs for prognosis prediction and immune microenvironment in patients with head and neck squamous carcinoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Oncology Research 2023年第1期31卷 35-61页

作者： QING gao YUJING SHI YUANYUAN SUN SHU ZHOU ZEYUAN LIU xinchen SUN XIAOKE DI Department of Radiation Oncology The First Affiliated Hospital of Nanjing Medical UniversityNanjing210029China Department of Oncology Jurong People’s HospitalJurong212499China Department of Radiation Oncology Nanjing Jiangning Hospital and the Affiliated Jiangning Hospital of Nanjing Medical UniversityNanjing211199China

Aging is highly associated with tumor formation and ***,little research has explored the association of aging-related lncRNAs(ARLs)with the prognosis and tumor immune microenvironment(TIME)of head and neck squamous cell carcinoma(HNSCC).RNA sequences and clinicopathological data of HNSCC patients and normal subjects were downloaded from The Cancer Genome *** the training group,we used Pearson correlation,univariate Cox regression,least absolute shrinkage/selection operator regression analyses,and multivariate Cox regression to build a prognostic *** the test group,we evaluated the *** Cox regression was done to screen out independent prognostic factors,with which we constructed a ***,we demonstrated the predictive value of the risk scores based on the model and the nomogram using time-dependent receiver operating *** set enrichment analysis,immune correlation analysis,and half-maximal inhibitory concentration were also performed to reveal the different landscapes of TIME between risk groups and to predict immuno-and chemo-therapeutic *** most important LINC00861 in the model was examined in HNE1,CNE1,and CNE2 nasopharyngeal carcinoma cell lines and transfected into the cell lines CNE1 and CNE2 using the LINC00861-pcDNA3.1 construct *** addition,CCK-8,Edu,and SA-β-gal staining assays were conducted to test the biofunction of LINC00861 in the CNE1 and CNE2 *** signature based on nine ARLs has a good predictive value in survival time,immune infiltration,immune checkpoint expression,and sensitivity to multiple ***00861 expression in CNE2 was significantly lower than in the HNE1 and CNE1 cells,and LINC00861 overexpression significantly inhibited the proliferation and increased the senescence of nasopharyngeal carcinoma cell *** work built and verified a new prognostic model for HNSCC based on ARLs and mapped the immune landscape in ***00861 is a protective

关键词： Aging lncRNA HNSCC Prognosis Tumor immune microenvironment Bioinformatics