检索结果-南通市图书馆

腹腔镜联合胆道镜治疗胆结石的价值分析与探究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国医疗器械信息 2021年第4期27卷 70-71页

作者：张剑华苏子剑费洪江林春城泉州市第一医院肝胆外科福建泉州362000

目的:探讨胆结石患者应用腹腔镜联合胆道镜治疗的临床应用价值。方法:选入本院自2016年2月~2017年2月住院的胆结石患者96例作为本次的研究对象,随机分为对照组与观察组,每组各48例,对照组采取传统开腹取石的治疗方案。观察组采取腹腔镜... 详细信息

目的:探讨胆结石患者应用腹腔镜联合胆道镜治疗的临床应用价值。方法:选入本院自2016年2月~2017年2月住院的胆结石患者96例作为本次的研究对象,随机分为对照组与观察组,每组各48例,对照组采取传统开腹取石的治疗方案。观察组采取腹腔镜联合胆道镜仪器进行手术取石的治疗方案。比较在不同手术治疗方案下,分析两组胆结石患者各项临床指标的临床疗效与应用价值。结果:两组患者均顺利完成相应的手术治疗,通过各项指标数据观察分析,观察组的手术恢复情况更优于对照组,差异有统计学意义(P<0.05)。两组患者的并发症发病率观察组低于对照组,差异有统计学意义(P<0.05)。结论:应用腹腔镜联合胆道镜治疗胆结石疾病,可以有效减少患者并发症的发病率,术后的恢复情况良好以及对患者机体的伤害程度明显减少。

关键词：胆结石胆道镜腹腔镜应用价值

Lower Bounds of Size Ramsey Number for Graphs with Small Independence Number

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2021年第4期37卷 841-846页

作者： chun-lin YOU Center for Discrete Mathematics Fuzhou UniversityFuzhou 350108 China

Let r≥3 be an integer such that r−2 is a prime power and let H be a connected graph on n vertices with average degree at least d andα(H)≤βn,where 0nd2(r−2)2−Cn−−√for all sufficiently large n,where C is a constant depending only on r,d andβ.In particular,for integers k≥1,and r≥3 such that r−2 is a prime power,we have that there exists a constant C depending only on r and k such that R^(Pkn;r)>kn(r−2)2−Cn−−√−(k2+k)2(r−2)2 for all sufficiently large n,where P k n is the kth power of Pn.

关键词： size ramsey number affine plane probabilistic method

在线全文

学校读者我要写书评

暂无评论

集合自旋量子计算机中的逻辑门测量

武汉理工大学学报 2010年第15期32卷 142-145页

作者：姚淅伟陈志伟牟晓阳潘健杨春林星程连建辉王新伟厦门大学物理系福建省等离子与磁共振研究重点实验室厦门361005

提出一种核磁共振量子计算机两量子位逻辑门测量的方案。该方案通过设置适当的标记量子位可显著缩减测量所需输入态数目,给出量子门和具体输入状态集合的实验脉冲序列。包含较少J偶合演化的脉冲序列设计可有效减少操作时间,削弱环境对... 详细信息

提出一种核磁共振量子计算机两量子位逻辑门测量的方案。该方案通过设置适当的标记量子位可显著缩减测量所需输入态数目,给出量子门和具体输入状态集合的实验脉冲序列。包含较少J偶合演化的脉冲序列设计可有效减少操作时间,削弱环境对量子系统的退相干影响。

关键词：量子计算核磁共振量子逻辑门

Effect of IL-4 on altered expression of complement activation regulators in rat pancreatic cells during severe acute pancreatitis

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2005年第43期11卷 6770-6774页

作者： cheng Zhang chun-lin Ge Ren-Xuan Guo San-Guang He Department of General Surgery No. 1 Hospital of China Medical University Shenyang 110001 Liaoning Province China

AIM： To investigate the effect of IL-4 on the altered expression of complement activation regulators in pancreas and pancreatic necrosis during experimental severe acute pancreatitis （SAP）. METHODS： SAP model of rats was established by retrograde injection of 5% sodium taurocholate （1 mL/kg） into the pancreatic duct. We immunohistochemically assayed the expression of three complement activation regulators： decay accelerating factor （DAF; CD55）, 20 ku homologous restriction factor （HRF20; CD59） and membrane cofactor protein （MCP; CEH6）, in the pancreatic acinar cells of rats at 0, 3, 6, 12, and 24 h after the induction of SAP model. Meanwhile the levels of amylase and lipase were determined, and morphological examination was performed. Then, 61 rats were randomly divided into three groups. Group A （n = 21） received no treatment after the SAP model was established; group B （n = 20） was given IL-4 （8 IJg/animal） intraperitoneally 0.5 h before the SAP model was established; group C （n = 20） was given IL-4 （8 μg/animal） intraperitoneaUy 0.5 h after the SAP model was established. Plasma amylase and lipase, extent of pancreatic necrosis and expression of complement activation regulators were investigated 6 h after the induction of SAP model. RESULTS： Three complement activation regulators were all expressed in pancreatic acinar cells. MCP was not found on the basolateral surface as reported. Contrary to the gradually increasing plasma level of amylase and lipase, expression of complement activation regulators decreased after SAP model was set up. At the same time, the severity of pancreatic necrosis was enhanced. A strong negative correlation was found between the expression of MCP, DAF, CD59 in pancreatic acinar cells and the severity of pancreatic necrosis （r = -0.748, -0.827, -0.723; P〈0.01）. In the second series of experiments, no matter when the treatment of IL-4 was given （before or after the induction of SAP model）, the serum level of amylase or lipase was decreased

关键词： Severe acute pancreatitis Complement activation regulators Interleukin-4

High-temperature compressive properties of TiC–TiB_2/Cu composites prepared by self-propagating high-temperature synthesis

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

Rare Metals 2014年第1期33卷 95-98页

作者： Li-Zhu Liu Guo-Bing Ying Jia Zhu Hong lin chun-cheng Zhu College of Chemistry and Chemical Engineering Harbin Normal University Institute of Metals and Protection College of Mechanics and Materials Hohai University

TiC-TiB2/Cu composites were prepared by self-propagating high-temperature synthesis with pseudo hot isostatic pressing using Ti, B4C, and Cu powders. The compressive deformation of the composites at high tem- perature was investigated. It is found that the maximum compressive strength decreases with the increase of tem- perature and Cu content. The deformation of the composites includes the steps of elastic, stable theology, and inaction. The maximum strain is in the range of 5 %-10 %. Before fracture, TiC-TiB2/40Cu becomes drum-shaped at 1123 K; however, TiC-TiB2/20Cu only has a brittle frac- ture along the axial direction of 45~. The results show that the compressive strength of TiC-TiB2/Cu decreases from 823 to 1223 K. However, the maximum compressive strength of TiC-TiB2/20Cu reaches 1850 MPa at 823 K, which predicts that this series of composites could be applied to high-temperature compressive materials.

关键词： TiC-TiB2/Cu SHS/PHIP High-temperature compression

A Parallel High-Utility Itemset Mining Algorithm Based on Hadoop

在线全文

学校读者我要写书评

暂无评论

Complex System Modeling and Simulation 2023年第1期3卷 47-58页

作者： Zaihe cheng Wei Shen Wei Fang Jerry chun-Wei lin School of Internet of Things Wuxi Institute of TechnologyWuxi 214121China School of Artificial Intelligence and Computer Science Jiangnan UniversityWuxi 214122China Jiangsu Provincial Engineering Laboratory of Pattern Recognition and Computational Intelligence Jiangnan UniversityWuxi 214122China Department of Computer Science Electrical Engineering and Mathematical SciencesWestern Norway University of Applied SciencesBergen 5020Norway

High-utility itemset mining(HUIM)can consider not only the profit factor but also the profitable factor,which is an essential task in data ***,most HUIM algorithms are mainly developed on a single machine,which is inefficient for big data since limited memory and processing capacities are available.A parallel efficient high-utility itemset mining(P-EFIM)algorithm is proposed based on the Hadoop platform to solve this problem in this *** P-EFIM,the transaction-weighted utilization values are calculated and ordered for the itemsets with the MapReduce *** the ordered itemsets are renumbered,and the low-utility itemsets are pruned to improve the dataset *** the Map phase,the P-EFIM algorithm divides the task into multiple independent *** uses the proposed S-style distribution strategy to distribute the subtasks evenly across all nodes to ensure ***,the P-EFIM uses the EFIM algorithm to mine each subtask dataset to enhance the performance in the Reduce *** are performed on eight datasets,and the results show that the runtime performance of P-EFIM is significantly higher than that of the PHUI-Growth,which is also HUIM algorithm based on the Hadoop framework.

关键词： pattern mining data mining Hadoop parallel high-utility itemset mining big data

Role of exosomal long non-coding RNAs in colorectal cancer

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

World Journal of Gastrointestinal Oncology 2021年第8期13卷 867-878页

作者： Ru Sun Xiao-Yun He cheng Mei chun-lin Ou Department of Blood Transfusion Affiliated Hospital of North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina Department of Pathology Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina Department of Blood Transfusion Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina

Exosomes are a class of small extracellular vesicles,30-150 nm in diameter,that transfer biological information(e.g.,DNA,RNA,and protein)via cell-to-cell *** play critical roles in the occurrence and development of human cancers,including colorectal cancer(CRC).Recent studies have shown that long non-coding RNAs(lncRNAs)can be encapsulated in exosomes,which transfer lncRNAs from secretory cells into recipient *** process affects the progression of CRC,since exosomal lncRNAs display special and extensive functions in CRC tumorigenesis,including malignant proliferation,metastasis,chemoresistance,and inflammatory ***,due to their specificity and sensitivity,exosomal lncRNAs are released into body fluids(e.g.,urine,sputum,and plasma),which have the potential to be biomarkers of CRC tumorigenesis within screening efforts and medical and epidemiologic *** this review,we aim to clarify the function and mechanism of exosomal lncRNAs in CRC tumorigenesis and provide a strategy for early diagnosis and medical treatment of this malignancy.

关键词： Exosomes Long non-coding RNAs Colorectal cancer Chemoresistance Inflammatory response Therapy

Selective dissolution of eodiagenesis cements and its impact on the quality evolution of reservoirs in the Xing＇anling Group,Suderte Oil Field, Hailar Basin, China

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

Petroleum Science 2016年第3期13卷 402-417页

作者： Zhen-Zhen Jia cheng-Yan lin Li-Hua Ren chun-Mei Dong School of Geosciences China University of Petroleum Qingdao 266580 Shandong China Key Laboratory of Reservoir Geology in Shandong Province Qingdao 266580 Shandong China

Reservoirs in the Xing＇anling Group in the Suderte Oil Field,Hailar Basin exhibit ultra-low to low permeability and high tuffaceous material *** study comprehensively analyzed diagenesis and quality evolution of these low-permeability reservoirs using thin sections,SEM samples,rock physical properties,pore water data,as well as geochemical numerical *** and analcite are the two main types of cements precipitated in the eodiagenetic stage at shallow burial depths in the *** two cements occupied significant primary intergranular pores and effectively retarded deep burial *** textures suggest selective dissolution of massive analcite and little dissolution of calcite in the mesodiagenetic *** calculations utilizing the Geochemist＇s Workbench 9.0indicated that the equilibrium constant of the calcite leaching reaction is significantly smaller than that of the analcite leaching reaction,resulting in extensive dissolution of analcite rather than calcite in the geochemical system with both minerals *** simulations with constraints of kinetics and pore water chemistry demonstrated that the pore water in the Xing＇anling group is saturated with respect to calcite,but undersaturated with analcite,leading to dissolution of large amounts of analcite and no dissolution of *** secondary intergranular pores have formed in analcite-cemented reservoirs from selective dissolution of analcite in the mesodiagenetic stage;the analcite dissolution formed preferential flow paths in the reservoirs,which promoted feldspar dissolution;and dissolution of such minerals led to the present reservoirs with medium porosity and low ***-cemented tight reservoirs have not experienced extensive dissolution of cements,so they exhibit ultra-low porosity and permeability.

关键词： Eodiagenetic cements Calcite Analcite Selective dissolution Secondary porosity Hailar Basin

Effect of intercropping on maize grain yield and yield components

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2019年第8期18卷 1690-1700页

作者： HUANG cheng-dong LIU Quan-qing LI Xiao-lin ZHANG Chao-chun College of Resources and Environmental Sciences China Agricultural University Beijing 100193 P.R.China Key Laboratory of Plant-Soil Interactions Ministry of Education China Agricultural University Beijing 100193 P.R.China Institute of Agricultural Resources & Environment Hebei Academy of Agricultural and Forestry Sciences Shijiazhuang 050051P.R.China

Smallholders in developing countries commonly use intercropping to produce crops with higher yield and value. Many intercropping studies have been conducted under experimental conditions, but few studies have been performed in farmers’ fields. We conducted a 4-year study using data from real farms to examine the relationships between yield and yield components of intercropped maize in the North China Plain. Three field experiments were conducted to compare the suitability of different maize varieties in intercropping. In the farm study, the grain yield of maize intercropped with watermelon was reduced by more than one third as compared to maize in wheat-maize double cropping, mainly due to lower ear density and lower 100-grain weight. Under real farm conditions, the yield of intercropped maize increased with increasing ear density and 100-grain weight, while yield of sole maize increased with increasing grain number per ear and 100-grain weight. In the field experiments, the maize cultivars commonly used in double cropping gave similar yields when grown in the intercropping system and their yields were closely related to ear density and 100-grain weight. Our results demonstrated that ear density, rather cultivar, was a key factor affecting the productivity of intercropped maize. Therefore,maintaining high ear density is a practical way for promoting productivity of maize in farmers’ intercropping practices.

关键词： maize ear density intercropping double cropping cultivars