检索结果-南通市图书馆

Meta-analysis of radiofrequency ablation in combination with transarterial chemoembolization for hepatocellular 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

World Journal of Gastroenterology 2013年第24期19卷 3872-3882页

作者： Jia-Yan ni shan-shan Liu Lin-Feng Xu Hong-Liang Sun Yao-Ting Chen Department of Interventional Radiology Sun Yat-sen Memorial Hospital Sun Yat-Sen University School of Public Health Jilin University

AIM: To compare radiofrequency ablation (RFA) and transcatheter arterial chemoembolization (TACE) with RFA monotherapy in hepatocellular carcinoma (HCC). METHODS: We searched PubMed, Medline, Embase and Chinese databases (CBMdisc and Wanfang data) for randomized controlled trails comparing RFA plus TACE and RFA alone for treatment of HCC from January 2000 to December 2012. The overall survival rate, re-currence-free survival rate, tumor progression rate, and safety were analyzed and compared. The analysis was conducted on dichotomous outcomes and the standard meta-analytical techniques were used. Pooled odds ratios (ORs) with 95%CIs were calculated using either the fixed-effects or random-effects model. For each meta-analysis, the χ2 and I2 tests were first calculated to assess the heterogeneity of the included trials. For P50%, the assumption of homogeneity was deemed invalid, and the random-effects model wasused; otherwise, data were assessed using the fixed-effects model. All statistical analysis was conducted us-ing Review manager (version 4.2.2.) from the Cochrane collaboration. RESULTS: Eight randomized controlled trials were identified as eligible for inclusion in this analysis and included 598 patients with 306 treated with RFA plus TACE and 292 with RFA alone. Our data analysis indicated that RFA plus TACE was associated a sig-nificantly higher overall survival rate (OR 1-year=2.96, 95%CI: 1.84-7.74, Pnificant difference on major complications between two different kinds of treatment (OR=1.20, 95%CI: 0.31-4.62, P=0.79). Additionally, the meta-analysis data

关键词： Radiofrequency ablation Transcatheter ar-terial chemoembolization Hepatocellular carcinoma Meta-analysis

Giant tumor resection under ultrasound-guided nerve block in a patient with severe asthma:A case report

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 Clinical Cases 2022年第10期10卷 3200-3205页

作者： Qian Liu qing Zhong ni-Na Zhou Ling Ye Department of Pain Management West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Anesthesiology The People's Hospital of Jianyang CityJianyang 610041Sichuan ProvinceChina Department of Anesthesiology Zigong First People’s HospitalZigong 643000Sichuan ProvinceChina

BACKGROUND General anesthesia in critically ill patients is associated with increased risk of *** block anesthesia is an alternative,but could be challenging in cases with surgical field that involves multiple *** SUMMARY We report resection of a giant lipoma in the left shoulder and upper back under supraclavicular brachial plexus block plus T3-4 paravertebral block in an older patient with severe asthma.A 70-year-old patient presented with a slow-growing giant mass(25,15 and 5 cm in length,width and depth,respectively)that extended from the lateral side of the left scapula to the axillary midline,and from the T5 thoracic vertebra intercostal to the mid-medial section of the left upper *** had sharp intermittent pain over the mass for the past 7 *** patient also had severe bronchial asthma for the past 8 years.A pulmonary function test revealed only 20%of the predicted forced expiratory volume in 1 second(FEV1,0.49 L).After controlling asthma with glucocorticoid,the tumor was resected under ultrasound-guided supraclavicular brachial plexus block and T3-4 paravertebral *** surgery was completed without *** Ultrasound-guided regional nerve block is a viable alternative for patients with poor cardiopulmonary function undergoing shoulder,back and axillary surgery.

关键词： Ultrasound Giant tumor Brachial plexus block Paravertebral block Case report

Data-driven Seeing Prediction for Optics Telescope:from Statistical Modeling,Machine Learning to Deep Learning Techniques

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2022年第12期22卷 152-165页

作者： Wei-Jian ni Quan-Le Shen qing-Tian Zeng Huai-qing Wang Xiang-Qun Cui Tong Liu College of Computer Science and Engineering Shandong University of Science and TechnologyQingdao 266510China Nanjing Institute of Astronomical Optics&Technology National Astronomical ObservatoriesNanjing 210042China

Predicting seeing of astronomical observations can provide hints of the quality of optical imaging in the near future,and facilitate flexible scheduling of observation tasks to maximize the use of astronomical *** approaches to seeing prediction mostly rely on regional weather models to capture the in-dome optical turbulence *** to the developing of data gathering and aggregation facilities of astronomical observatories in recent years,data-driven approaches are becoming increasingly feasible and attractive to predict astronomical *** paper systematically investigates data-driven approaches to seeing prediction by leveraging various big data techniques,from traditional statistical modeling,machine learning to new emerging deep learning methods,on the monitoring data of the Large sky Area Multi-Object fiber Spectroscopic Telescope(LAMOST).The raw monitoring data are preprocessed to allow for big data *** we formulate the seeing prediction task under each type of modeling framework and develop seeing prediction models through using representative big data techniques,including ARIMA and Prophet for statistical modeling,MLP and XGBoost for machine learning,and LSTM,GRU and Transformer for deep *** perform empirical studies on the developed models with a variety of feature configurations,yielding notable insights into the applicability of big data techniques to the seeing prediction task.

关键词： methods:data analysis methods:statistical telescopes

Metagenomic analysis reveals hidden links between gut microbes and habitat adaptation among cave and surface dwelling Sinocyclocheilus species

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2023年第4期44卷 793-807页

作者： Hong-Yu Chen Chun-qing Li shan-Yuan Chen Hen Xiao School of Ecology and Environmental Sciences Yunnan UniversityKunmingYunnan 650500China Institute of Medical Biology Chinese Academy of Medical Sciences and Peking Union Medical SchoolKunmingYunnan 650031China

Intestinal microbes are closely related to vital host functions such as digestion and nutrient absorption,which play important roles in enhancing host *** a natural“laboratory”,caves provide an outstanding model for understanding the significance of gut microbes and feeding habits in the habitat adaptability of ***,research on the relationship between gut microbes,feeding habits,and the adaptability of troglobites remains *** this study,we compared the characteristics of the intestinal microbes of Sinocyclocheilus cavefish and surface fish and further established the relationship between intestinal and habitat ***,we conducted environmental DNA(eDNA)(metabarcoding)analysis of environmental samples to clarify the composition of potential food resources in the habitats of the Sinocyclocheilus cavefish and surface *** showed that the structure of the Sinocyclocheilus gut microbes was more related to ecological type(habitat type)than phylogenetic *** horizontal transfer of habitat microbes was a source of gut microbes,hosts also showed strong selection for inherent microbes as dominant *** in the composition and structure of gut microbes,especially dominant microbes,may enhance the adaptability of the two Sinocyclocheilus fish types from the perspectives of food intake,nutrient utilization,and harmful substance metabolism,suggesting that food resources,predation patterns,intestinal flora,digestive and absorptive capacity,and feeding habits and preferences are linked to habitat *** results should facilitate our understanding of the significance of fish gut microbes to habitat adaptation and provide a new perspective for studying the adaptive mechanisms of cavefish.

关键词： Cavefish Intestinal microbes Sinocyclocheilus Adaptive mechanism

EXPERIMENTAL AND THEORETICAL STUDY OF CAVITATION-INDUCED MECHAniCAL EFFECT ON A SOLID BOUNDARY

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2005年第6期17卷 724-729页

作者： XU Rong-qing CHEN Xia SHEN Zhong-hua LU Jian ni Xiao-wu School of Electronics and information Jiangsu University of Science and Technology Zhenjiang 212003 China Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 China

The mechanical effect induced by the cavitati- on bubble collapse in the neighborhood of a solid boundary was investigated by focusing a Q-switched laser pulse on a metal target in water. By means of a fiber-coupling optical beam deflection technique, the displacement generated by liquid jet impact at the final stage of the bubble collapse was detected at the epicenter of the rear metal surface. Furthermore, by combining a widely used laser ablation model with the detection principles of this detector, the transient impact force exerting on the target material could be easily estimated. Besides, according to experimental results and the modified Ray leigh theory, the maximum bubble radius and the liquid-jet pressure were also obtained, which are in good agreement with previous results,

关键词： liquid jet impact optical beam deflection laser ablation model cavitation

Synthesis of a class of oxocarbons(C_(4)O_(4),C_(5)O_(5))and the application as high-capacity cathode materials for lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第10期66卷 2780-2784页

作者： Xuesen Hou Yong Lu Youxuan ni Dongmei Zhang qing Zhao Jun Chen Frontiers Science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

Oxocarbons(C_(n)O_(n),n=3,4,5,6,...)are a series of compounds that are only composed of carbonyl *** highly electrophilic carbon atoms in C_(n)O_(n)make their poor stability toward H_(2)O,and thus the synthesis of C_(n)O_(n)is very *** an oxidation-dehydration method is developed to successfully synthesize C_(4)O_(4)and C_(5)O_(5).The combination of nuclear magnetic resonance(^(13)C NMR,^(1)H NMR),mass spectra,and infrared spectra unambiguously proves the exact chemical structure of C_(4)O_(4)and C_(5)O_(5).When used as a cathode material in lithium-ion batteries(LIBs),C_(5)O_(5)could deliver a high discharge capacity of 698m Ah g-1(corresponding to an energy density of 1,256 Wh kg-1C_(5)O_(5)).Furthermore,ex-situ infrared spectra and density functional theory(DFT)calculations demonstrate that the carbonyl groups are redox active sites during discharge and charge *** work paves the way to achieve the synthesis and battery application of oxocarbons.

关键词： oxocarbons C_(4)O_(4) C_(5)O_(5) organic cathode lithium-ion batteries

Gap edge canopy buffering of throughfall deposition in a subalpine natural forest

在线全文

学校读者我要写书评

暂无评论

Forest Ecosystems 2022年第4期9卷 503-510页

作者： Siyi Tan qing Dong Xiangyin ni Kai Yue Shu Liao Fuzhong Wu Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education School of Geographical SciencesFujian Normal UniversityFuzhou350007China Ecological Security and Protection Key Laboratory of Sichuan Province Mianyang Teachers'CollegeMianyang621000China

Base cation loads are rarely considered in forest gap edge canopies,but they can play critical roles in capturing or buffering atmospheric deposition in forests with frequent gap disturbances,such as subalpine *** selected an expanded gap edge canopy and a closed canopy in a subalpine natural forest on the eastern Tibetan *** throughfall deposition and canopy exchange processes of common base cations(K^(+),Ca^(2+),Na^(+),and Mg^(2+))were continuously studied over two *** results showed that the enrichment ratio and fluxes had lower levels of base cations in the gap-edge canopy than in the closed canopy,which indicated that base cations were concentrated more in the closed canopy than in the gap-edge *** Ca^(2+)in the gap-edge canopy showed a higher net throughfall flux,the annual net throughfall fluxes of K^(+),Na^(+) and Mg^(2+) within the gap-edge canopy were 1.83,6.75 and 2.95 times lower than those in the closed canopy,***,dry deposition fluxes of base cations significantly decreased in the gap edge canopy compared to those in the closed canopy,and the decreasing tendency was more significant during the snowy season than during the rainy ***,these results suggest that the amount of base cations in subalpine natural forest ecosystems may be overestimated when the throughfall deposition of ions in gap edge canopies is ignored.

关键词： Canopy exchange Dry deposition Throughfall Subalpine forest Precipitation deposition

Game Theoretical Control of Service Rates in Closed Jackson Networks

在线全文

学校读者我要写书评

暂无评论

Game Theoretical Control of Service Rates in Closed Jackson ...

Matching Uncertain Renewable Supply with Electric Vehicle Charging Demand-A Bi-Level Event-Based Optimization Method

第25届中国控制与决策会议

作者： Li Xia qing-shan Jia the Center for Intelligent and Networked Systems （CFINS） Department of Automation TNList Tsinghua University

ISBN: (纸本)9781467355339

The servers’ competition for resources is a common phenomena in queueing systems. In this paper, we discuss the service rate control problem of queueing networks from a game theoretical perspective. The payoff function of each server is composed of two parts, the holding cost and the operating cost. Each server independently chooses their service rates in order to maximize their own average payoff. We formulate this problem as a game and prove that the average payoff of each server has a monotonic property. We further develop an iterative algorithm to find the Nash equilibrium of this game. Simulation experiments are conducted to demonstrate the main idea of the paper.

关键词： Game theory service rate control queueing networks Nash equilibrium.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Complex System Modeling and Simulation 2021年第1期1卷 33-44页

作者： Teng Long qing-shan Jia shan Jia are with the Center For Intelligent and Networked Systems(CFINS) Department of AutomationBeijing National Research Center for Information Science and Technology(BNRist)Tsinghua UniversityBeijing 100084China.

The matching between dynamic supply of renewable power generation and flexible charging demand ofthe Electric Vehicles (EVs) can not only increase the penetration of renewables but also reduce the load to the stateelectric power grid. The challenges herein are the curse of dimensionality, the multiple decision making stagesinvolved, and the uncertainty of both the supply and demand sides. Event-Based Optimization (EBO) provides a newway to solve large-scale Markov decision process. Considering different spatial scales, we develop a bi-level EBOmodel in this paper which can both catch the changes on the macro and micro levels. By proper definition, the sizeof event space stays fixed with the scale of the problem, which shows good scalability in online optimization. Then abi-level Q-learning method is developed to solve the problem iteratively. We demonstrate the performance of themethod by numerical examples. Our method outperforms other methods both in performance and scalability.

关键词： electric vehicle event-based optimization cyber physical energy system