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| 1 | D2 dissection in laparoscopic and open gastrectomy for gastric cancer显示文摘AIM: To evaluate the radicalness and safety of laparoscopic D2 dissection for gastric cancer. METHODS: Clinicopathological data from 209 patients with gastric cancer, who underwent radical gastrectomy with D2 dissection between January 2007 and February 2011, were analyzed retrospectively. Among these patients, 131 patients underwent laparoscopyassisted gastrectomy (LAG) and 78 underwent open gastrectomy (OG). The parameters analyzed included operative time, blood loss, blood transfusion, morbidity, mortality, the number of harvested lymph nodes (HLNs), and pathological stage.RESULTS: There were no significant differences in sex, age, types of radical resection [radical proximal gastrectomy (PG + D2), radical distal gastrectomy (DG + D2) and radical total gastrectomy (TG + D2)], and stages between the LAG and OG groups (P > 0.05). Among the two groups, 127 cases (96.9%) and 76 cases (97.4%) had 15 or more HLNs, respectively. The average number of HLNs was 26.1 ± 11.4 in the LAG group and 24.2 ± 9.3 in the OG group (P = 0.233). In the same type of radical resection, there were no signifi cant differences in the number of HLNs between the two groups (PG + D2: 21.7 ± 7.5 vs 22.4 ± 9.3; DG + D2: 25.7 ± 11.0 vs 22.3 ± 7.9; TG + D2: 30.9 ± 13.4 vs 29.3 ± 10.4; P > 0.05 for all comparisons). Tumor free margins were obtained in all cases. Compared with OG group, the LAG group had signifi cantly less blood loss, but a longer operation time (P < 0.001). The morbidity of the LAG group was 9.9%, which was not signifi cantly different from the OG group (7.7%) (P = 0.587). The mortality was zero in both groups. CONCLUSION: Laparoscopic D2 dissection is equivalent to OG in the number of HLNs, regardless of tumor location. Thus, this procedure can achieve the same radicalness as OG. | Ming Cui lia-Di Xing Yi-Yuan Ma Zhen-Dan Yao Nan Zhang Xiang-Qian Su Wei Yang | 2012 | World Journal of Gastroenterology2012，18，8： | 16 |
| 2 | Monitoring models for base flow effect and daily variation of dam seepage elements considering time lag effect显示文摘Affected by external environmental factors and evolution of dam performance, dam seepage behavior shows nonlinear time-varying characteristics. In this study, to predict and evaluate the long-term development trend and short-term fluctuation of the dam seepage behavior, two monitoring models were developed, one for the base flow effect and one for daily variation of dam seepage elements. In the first model, to avoid the influence of the time lag effect on the evaluation of seepage variation with the time effect component of seepage elements, the base values of the seepage element and the reservoir water level were extracted using the wavelet multi-resolution analysis method, and the time effect component was separated by the established base flow effect monitoring model. For the development of the daily variation monitoring model for dam seepage elements, all the previous factors, of which the measured time series prior to the dam seepage element monitoring time may have certain influence on the monitored results, were considered. Those factors that were positively correlated with the analyzed seepage element were initially considered to be the support vector machine(SVM) model input factors, and then the SVM kernel function-based sensitivity analysis was performed to optimize the input factor set and establish the optimized daily variation SVM model. The efficiency and rationality of the two models were verified by case studies of the water level of two piezometric tubes buried under the slope of a concrete gravity dam.Sensitivity analysis of the optimized SVM model shows that the influences of the daily variation of the upstream reservoir water level and rainfall on the daily variation of piezometric tube water level are processes subject to normal distribution. | Shao-wei Wang Ying-li Xu Chong-shi Gu Teng-fei Bao | 2018 | Water Science and Engineering2018，11，4： | 8 |
| 3 | Liver function alterations after laparoscopy-assisted gastrectomy for gastric cancer and its clinical significance显示文摘AIM: To evaluate the factors associated with liver function alterations after laparoscopy-assisted gastrectomy (LAG) for gastric cancer. METHODS: We collected the data of gastrectomy patients with gastric cancer and divided them into 2 groups: open gastrectomy (OG) and LAG. We also collected the data of patients with colon cancer to evaluate the effect of liver manipulations during surgery on liver function alterations. Serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin, and alkaline phosphatase were measured on the preoperative day and postoperative day 1 (POD1), POD3, POD5, and POD7. RESULTS: No changes in liver function were observed after the operation in patients with colon cancer (n = 121). However, in gastric cancer patients (n = 215), AST and ALT levels increased until POD5 compared to those in colon cancer patients and these findings were observed both in the LAG and OG without a significant difference except at POD1. The mean hepatic enzyme levels at POD1 in the LAG group were significantly higher than those in the OG group (P = 0.047 for AST and P = 0.039 for ALT). The factors associated with elevated ALT on POD1 in patients with gastric cancer were body mass index (P < 0.001), operation time (P < 0.001), intraoperative hepatic injury (P = 0.048), and ligation of an aberrant left hepatic artery (P = 0.052) but not type of operation (OG vs LAG, P = 0.094). CONCLUSION: We conclude that the liver function alteration after LAG may have been caused by direct liver manipulation or aberrant hepatic artery ligation rather than the CO2 pneumoperitoneum. | Gui-Ae Jeong Gyu-Seok Cho Eung-Jin Shin Moon-Soo Lee Hyung-Chul Kim Ok-Pyung Song | 2011 | World Journal of Gastroenterology2011，17，3： | 6 |
| 4 | PTN网络保护机制应用策略研究显示文摘作为PTN网络在3G/LTE移动回传、高品质专线等业务承载中扮演着重要角色的保护功能,其机制和应用策略一直是业内的关注焦点。本文对PTN网络的保护机制和现网的保护现状做了分析比较,重点研究了不同网络拓扑、不同网络层次、不同业务承载场景中的PTN网络保护应用策略,最后对PTN网络的保护进行了展望。 | 李伟 | 2011 | 电信网技术2011，，12： | 6 |
| 5 | Pore structure of new composite adsorbent SiO2·xH2O·yCaCl2 with high uptake of water from air显示文摘A new composite adsorbent SiO2@xH2O@yCaCl2 which is composed of macro-porous silica gel and calcium chloride is introduced. In order to analyze its adsorption theory, adsorption and desorption isotherms, BET surface areas, pore volumes and average pore diameters of macro-porous silica gel and four composite adsorbent samples with different CaCl2 content are measured using SEM and Asap2010 apparatus. From the adsorption isotherms, desorption isotherms and lag loops, it can be deduced that the main pore structure in macro-porous silica gel and the new composite adsorbent have two shapes: taper with one top open and taper or hyperbolic taper with both ends open. Based on the analysis of pore diameter distribution and lag loop, a sketch map showing calcium chloride filled in pore of macro-porous silica gel is presented. The adsorption isotherms at 25℃ are measured. Experimental results show that the new composite adsorbent can adsorb more water than common adsorbents (macro-porous silica gel, micro-porous silica gel and synthetic zeolite 13X). In the light of the results of pore structure, adsorption isotherms and lyolysis phenomenon are analyzed. | LIU Yefeng (刘业凤) WANG Ruzhu (王如竹) | 2003 | Science China(Technological Sciences)2003，46，5： | 6 |
| 6 | Effect of the population heterogeneity on growth behavior and its estimation显示文摘Different types of the Logistic model are constructed based on a simple assumption that the microbial populations are all composed of homogeneous members and consequently, the condition of design for the initial value of these models has to be rather limited in the case of N(t_0)=N_0. Therefore, these models cannot distinguish the dynamic behavior of the populations possessing the same N0 from heteroge-neous phases. In fact, only a certain ratio of the cells in a population is dividing at any moment during growth progress, termed as θ, and thus, ddNt not only depends on N, but also on θ. So θ is a necessary element for the condition design of the initial value. Unfortunately, this idea has long been neglected in widely used growth models. However, combining together the two factors (N0 and θ ) into the initial value often leads to the complexity in the mathematical solution. This difficulty can be overcome by using instantaneous rates (Vinst) to express growth progress. Previous studies in our laboratory sug-gested that the Vinst curve of the bacterial populations all showed a Guassian function shape and thus, the different growth phases can be reasonably distinguished. In the present study, the Gaussian dis-tribution function was transformed approximately into an analytical form (0.5x ibxYi αe=20) that can be conveniently used to evaluate the growth parameters and in this way the intrinsic growth behavior of a bacterial species growing in heterogeneous phases can be estimated. In addition, a new method has been proposed, in this case, the lag period and the double time for a bacterial population can also be reasonably evaluated. This approach proposed could thus be expected to reveal important insight of bacterial population growth. Some aspects in modeling population growth are also discussed. | ZHANG HuaiQiang, LU LiLi, YAN XueLan & GAO PeiJi State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China | 2007 | Science China(Life Sciences)2007，50，4： | 4 |
| 7 | Real-time quality control of data from Sea-Wing underwater glider installed with Glider Payload CTD sensor显示文摘Profiles observed by Sea-Wing underwater gliders are widely applied in scientific research. However, the quality control(QC) of these data has received little attention. The mismatch between the temperature probe and conductivity cell response times generates erroneous salinities, especially across a strong thermocline. A sensor drift may occur owing to biofouling and biocide leakage into the conductivity cell when a glider has operated for several months. It is therefore critical to design a mature real-time QC procedure and develop a toolbox for the QC of Sea-Wing glider data. On the basis of temperature and salinity profiles observed by several Sea-Wing gliders each installed with a Sea-Bird Glider Payload CTD sensor, a real-time QC method including a thermal lag correction, Argo-equivalent real-time QC tests, and a simple post-processing procedure is proposed. The method can also be adopted for Petrel gliders. | Zenghong Liu Jianping Xu Jiancheng Yu | 2020 | Acta Oceanologica Sinica2020，39，3： | 4 |
| 8 | Lag Time、二氧化硫与啤酒新鲜度关系的研究显示文摘本文通过ESR测出的Lag Time指标来反映成品啤酒的EAP,研究了其与啤酒中二氧化硫及啤酒新鲜度感官得分的相关性,发现Lag Time与啤酒新鲜度得分、二氧化硫的含量呈正相关.外添加试验表明,添加二氧化硫的量与Lag Time几乎呈线性关系,验证了二氧化硫对啤酒抗老化起着关键作用.作者认为,在其它控制水平相对稳定的情况下,如何提高发酵过程的二氧化硫生成量、提高内源抗氧化力是延长啤酒保鲜期的重点. | 孙治富 郝俊光 张宇昕 闫鹏 陆健 | 2009 | 啤酒科技2009，，7： | 3 |
| 9 | Investigation on mechanical exhaust of cabin fire in large-space building显示文摘A calculation model for mechanical exhaust rate in large-space building in the case of cabin fire is proposed through theoretical analysis. Full-scale hot smoke tests are then performed to study the cabin fire spreading to large-space building at dif- ferent air change rates (ACH). The result indicates that under the standard pre- scribed ACH, the effective air heights in the large spaces are respectively 6, 4 and 2 m in the case of cabin fires of 0.34, 0.67 and 1 MW. Numerical experiment has been conducted using self-developing two-zone model. The smoke control effi- ciency is compared by varying the large space’s air change rate in the case of cabin fires ranging from 0.25 to 4 MW. The calculation results show that the air change rates are respectively 3, 6, 10 and 10 ACH when the smoke layer is kept above 5 m, indicating that the centralized exhaust rates far exceed the standard prescribed value. To address this problem, a set of subsidiary distributed mechanical exhaust installing in the cabin with high fire loads is proposed. The simulation shows that both from the safety and economy point of view, the adoption of subsidiary dis- tributed cabin exhaust design may effectively reduce the demand of designed air change rate for large-space building. | SHI CongLing ZHONG MaoHua HUO Ran | 2008 | Science China(Technological Sciences)2008，51，1： | 3 |
| 10 | 国际大地测量协会(IAG)新组织机构及对我国大地测量发展的思考显示文摘介绍国际大地测量工作重点的转移并提出有关我国大地测量发展的建议。 | 杨元喜 | 2003 | 测绘通报2003，，6： | 3 |
| 11 | Lag influences of winter circulation conditions in the tropical western Pacific on South Asian summer monsoon显示文摘By means of monthly mean NCEP/NCAR data analyses, this note investigates the lag influences of winter circulation conditions in the tropical western Pacific on South Asian summer monsoon through the methods of composite, correlation and statistical confident test. The results indicate clearly that winter climate variations in the equatorial western Pacific would produce significant influences on the following South Asian summer monsoon, and with the lapse of time the lag influences show clearly moving northward and extending westward features. When winter positive (negative) sea level pressure anomalies occupy the equatorial western Pacific, there is an anticyclonic (cyclonic) circulation anomaly appearing in the northwestern Pacific. With the lapse of time, the anticyclonic (cyclonic) circulation anomaly gradually moves to northeast, and its axis in the west-east directions also stretches, therefore, easterly (westerly) anomalies in the south part of the anticyclonic (cyclonic) circulation anomaly | Bingyi Wu Ronghui Huang | 2001 | Chinese Science Bulletin2001，46，10： | 3 |
| 12 | The effect of applied stress on damage mode of 3D C/C composites under bend-bend fatigue loading显示文摘The bend-bend fatigue behavior of 3D integral braided carbon/carbon composites (3D C/C) was examined. Fatigue test was conducted under load control at a sinu-soidal frequency of 10 Hz to obtain stress-fracture cycles (S-N) relationship. The fatigue limit of the C/C was found to be 203 MPa (92% of the static flexural strength), the lag loops of fatigue load-displacement were transformed from elasticity to anelasticity and the flexibility of specimens were enhanced with increase in applied stress. It is revealed that the interfacial sliding abrasion played an important role in the fatigue failure process, and the extent and speed of sliding abrasion were con-trolled by the level of applied stress. | LIAO XiaoLing LI HeJun XU WenFeng LI KeZhi | 2007 | Science China(Technological Sciences)2007，50，1： | 3 |
| 13 | 机器人折弯单元改善钣金加工工艺的浅析显示文摘不久前,无锡某用户在某展会参观LAG葛世国际-嘉意机床(上海)有限公司(以下简称“LAG”)展出的机器人折弯单元时,通过参观了解和技术交流,用户对机器人折弯工艺产生了非常浓厚的兴趣。用户认为:这种先进的生产设备和工艺技术完全能够解决他们公司现有的钣金加工瓶颈问题。下面笔者就该用户如何采用机器人折弯单元替代传统折弯机,展开生产工艺的分析比较,介绍一个LAG如何应用国际领先技术的机器人折弯单元为用户解决疑难杂症的案例。 | 马会元 王军军 | 2019 | 世界制造技术与装备市场2019，0，5： | 3 |
| 14 | DYNAMIC CHARACTERISTICS OF LAG VIBRATION OF A WIND TURBINE BLADE显示文摘Lagwise dynamic characteristics of a wind turbine blade subjected to unsteady aerodynamic loads are studied in this paper.The partial diferential equations governing the coupled longitudinal-transverse vibration of the blade with large bending deflection are obtained by applying Hamilton’s principle.The modal problem of the coupled vibration is handled by using the method of numerical integration of Green’s function.Influences of the rotating speed,the pitch angle,the setting angle,and the aerodynamic loads on natural frequencies are discussed.Results show that:(1)Lagwise natural frequencies ascend with the increase of rotating speed;efects of the rotating speed on low-frequencies are dramatic while these efects on high-frequencies become less.(2)Influences of the pitch angle on natural frequencies are little;in the range of the normal rotating speed,the first frequency ascends with the increase of the absolute value of the pitch angle,while it is contrary to the second and third frequencies.(3)Efects of the setting angle on natural frequencies depend on the rotating speed;influences are not significant at low speed,while they are dramatic on the first frequency at high speed.(4)Efects of the aerodynamic loads on natural frequencies are very little;frequencies derived from the model considering aerodynamic loads are smaller than those from the model neglecting aerodynamic loads;relative errors of the results corresponding to two models ascend with the increase of the absolute value of the setting angle. | Yinghui Li Liang Li Qikuan Liu Haiwei Lv | 2013 | Acta Mechanica Solida Sinica2013，26，6： | 3 |
| 15 | Experimental investigation on a parabolic trough solar collector for thermal power generation显示文摘Developing solar thermal power technology in an effective manner is a great challenge in China.In this paper an experiment platform of a parabolic trough solar collector system(PTCS) was developed for thermal power generation,and the performance of the PTCS was experimentally investigated with synthetic oil as the circulate heat transfer fluid(HTF).The solar collector's efficiency with the variation of the solar flux and the flow rate of the HTF was identified.The collector efficiency of the PTCS can be in the range of 40%-60%.It was also found that there existed a specified delay for the temperature of the HTF to response to the solar flux,which played a significant role in designing the PTCS.The heat loss effect on collector efficiency was also studied,which was about 220 W/m for the receiver with a 180°C temperature difference between the collector temperature and the ambient temperature,amounting to about 10% of the total solar energy incident on the collector.The encouraging results can provide fundamental data for developing the parabolic trough solar thermal power plant in China. | LIU QiBin1,WANG YaLong1,2,GAO ZhiChao1,2,SUI Jun1,JIN HongGuang1 & LI HePing3 1 Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 China Huadian Engineering Co.,Ltd,Beijing 100044,China | 2010 | Science China(Technological Sciences)2010，53，1： | 3 |
| 16 | Research on forecasting model of sandstone deformation rate during sine wave loading segment under the lag effect显示文摘To reduce data variance caused by individual differences of different samples,a new experimental method is proposed by loading and unloading the axial forces with different frequencies and different waves of a certain load amplitude to the same rock sample without damaging it.Lag time segments are defined and fractionized into segments I and Ⅱ.Criterions for seg-mentation,definitions of relevant parameters and empirical analysis are also offered afterwards.In the course of sinusoidal loading,the serious peak value dislocation of the displacement variation rate and the loading rate is defined as peak dislocation.Meanwhile,the definition of the apparent tangent modulus is put forward and the linear relation between it and the vertical force in the frequency of 0.1,0.2,0.5 Hz sinusoidal loading segment is confirmed to be ever-present on the basis of the test data.Then the calculating formula of the deformation rate in non-lag time is deduced.It is thus suggested that the deformation rate should be codetermined by the loading rate df/dt and instant load f(t),which well explains the peak dislocation of the time-variable curve peak value of dl/dt and deformation rate of df/dt.Finally the lag time derivation model is established and by comparing the calculated values with the measured ones,it is demonstrated that the above formula offers a better simulation of the sandstone deformation rate in the sinusoidal loading segment,with the load amplitude being 96 kN and the frequency ranging from 0.1 Hz to 0.5 Hz. | LIU Jie1,2,LI JianLin1,2,QU JianJun1,ZHOU JiFang3,ZHANG ChaoFeng3 & LI JianWu1 1Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,Yichang 443002,China 2College of Civil and Hydropower Engineering,China Three Gorges University,Yichang 443002,China 3Er’tan Hydropower Development Company,Ltd.Chengdu 61000,China | 2010 | Science China(Technological Sciences)2010，53，5： | 2 |
| 17 | Interest rate liberalization and pass-through of monetary policy rate to bank lending rates in China显示文摘We examine whether the effectiveness of the monetary policy rate transmission differs before and after interest rate liberalization in China using the autoregressive distributed lag (ARDL) bound test and an error correction model (ECM). The results show that after liberalization the mark-up is lower, and both the Iong-run and shortrun interest rate pass-through has become faster and more complete. We attribute our findings to the ongoing reforms of China's banking system, which has improved the competitiveness of Chinese commercial banks. | Jingya Li Ming-Hua Liu | 2019 | Frontiers of Business Research in China2019，13，2： | 2 |
| 18 | IP数字微波在吕梁广电的应用显示文摘本文对吕梁广电IP数字微波电路改造工程中的实现难点进行了介绍,并对所使用IP数字微波的关键技术进行了描述,该工程的实施对吕梁广播电视节目可靠传输和安全播出提供了重要保障,其工程中的难点实现对其他微波电路的改造及设计人员具有借鉴和参考价值。 | 苏兵兵 | 2019 | 数字通信世界2019，0，10： | 2 |
| 19 | 验证链路聚合显示文摘在为分布式交换机的端口组指定了LAG之后,可以在vSphere Web Client管理界面,导航到DistributedSwitch,在“管理→设置→拓扑”中,选中分布式端口组,查看绑定的上行链路(如图7)。 | 王春海 | 2016 | 网络安全和信息化2016，0，5： | 2 |
| 20 | OPTIMAL CONTROL OF A CLASS OF DISTRIBUTED PARAMETER DELAY SYSTEMS显示文摘1.IntroductionManyphysicalsystems,suchajsthemodynamics,electrodynamics,populationbiology,aregovernedbydifferentialequations,integrodifferentialequationsormoregenerallyfunctionaldifferentialevolutionequationsonBanachspace.Associatedoptimalcontrolprobl... | XIANG Xiao ling (Department of Mathematics, Guizhou University, Guiyang 550025, China) | 2000 | Systems Science and Mathematical Sciences2000，13，1： | 1 |
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