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    题名 作者 年代 出处 被引量
1InSAR技术在矿区沉降监测中的应用研究显示文摘介绍了应用InSAR技术监测矿区地表沉降以及地下开采活动的原理;利用重轨差分InSAR技术获得了峰峰矿区地表ENVISAT和JERS 1的雷达形变干涉相位图;分析了在矿区地表沉降过程中ENVISATC波段和JERS 1 L波段形变干涉相位图的相干特性、相位特性以及干涉测量技术在矿区地表沉降监测中应用的可行性和局限性。实验结果表明,利用C波段和L波段雷达数据可以实施对矿区地表沉降的监测,但是C波段雷达受到空间干涉基线的限制更加严格,如果要实现对矿区地表沉降的监测,需要充分利用每个卫星回访时期的雷达数据,建立长时序的星载雷达形变干涉相位图序列,才能较好地实现矿区地表沉降监测。刘广 郭华东 Ramon Hanssen Zbigniew Perski 李新武 岳焕印 范景辉 2008国土资源遥感2008,20,2:34
2低温对羊草和牧冰草种子萌发率的影响(英文)显示文摘在25℃、5℃、4℃和18℃温度条件下,对根茎禾草羊草和牧冰草种子分别处理一周和两周,并置于玻璃培养皿和土壤盘中进行发芽检测,结果表明:3种低温处理的种子萌发率均有显著提高;羊草种子在处理温度为5℃、4℃和18℃时, 萌发率基本一致,显著高于25℃处理;牧冰草种子随着处理温度的降低,萌发率显著提高,以18℃处理效果最好;7d的低温处理效果显著高于14d;在室温、16h光照和8h黑暗条件下,土培的种子萌发率极显著高于置于玻璃培养皿的种子萌发率。谷安琳 易津 Roman Holubowicz Zbigniew Broda 2005中国草地2005,27,2:26
3Laboratory pull-out tests on fully grouted rock bolts and cable bolts:Results and lessons learned显示文摘Laboratory pull-out tests were conducted on the following rock bolts and cable bolts:steel rebars,smooth steel bars,fiberglass reinforced polymer threaded bolts,flexible cable bolts,IR5/IN special cable bolts and Mini-cage cable bolts.The diameter of the tested bolts was between 16 mm and 26 mm.The bolts were grouted in a sandstone sample using resin or cement grouts.The tests were conducted under either constant radial stiffness or constant confining pressure boundary conditions applied on the outer surface of the rock sample.In most tests,the rate of displacement was about 0.02 mm/s.The tests were performed using a pull-out bench that allows testing a wide range of parameters.This paper provides an extensive database of laboratory pull-out test results and confirms the influence of the confining pressure and the embedment length on the pull-out response(rock bolts and cable bolts).It also highlights the sensitivity of the results to the operating conditions and to the behavior of the sample as a whole,which cannot be neglected when the test results are used to assess the bolt-grout or the grouterock interface.Isabelle Thenevin Laura Blanco-Martín Faouzi Hadj-Hassen Jacques Schleifer Zbigniew Lubosik Aleksander Wrana 2017Journal of Rock Mechanics and Geotechnical Engineering2017,9,5:14
4Analysis of the Cross-Wedge Rolling Process of Toothed Shafts Made from 2618 Aluminium Alloy显示文摘The paper presents the results of a thermo-mechanical analysis of the rolling two stepped shafts.One of the shafts has a toothed step with skew teeth,while the other has a worm winding in the shape of a trapezoidal screw.The shape of the rolling tools resembles that of the tools used in the Roto-Flo rolling method;yet unlike in Roto-Flo,the shafts are hot-rolled and no centres are used to stabilize the position of the workpiece during the forming process.For the calculations made with use of the DEFORM-3D process simulation system it has been assumed that the rolled shafts are made from 2618 aluminium alloy.As a result of the calculations made,it has been found that the toothed stepped shafts can be formed in one pass by means of the cross rolling process.Additionally,the temperature and strain distribution in the rolled product have been determined as well as some data concerning the forces which are necessary for the rolling process have been obtained.PATER Zbigniew GONTARZ Andrzej TOFIL Arkadiusz 2011Journal of Shanghai Jiaotong university(Science)2011,16,2:14
5A comprehensive geomechanical method for the assessment of rockburst hazards in underground mining显示文摘Rockburst hazard in mining industry all over the world is one of the most severe hazards. It is becoming increasingly common because of the ever-growing depths of mining operations accompanied by the increasing strength of rocks. One of the most difficult issues is to predict this hazard before the mining operations, whether geophysical investigations have been conducted or not. Polish experience in this field shows that in such cases an effective solution can be the geomechanical method. Therefore, extensive studies on rockburst hazard should focus on three main aspects:(1) rock mass and rock(and coal)predisposition to rockburst–laboratory tests and empirical analyses based on lithology,(2) identification of the potential places with stress and elastic energy concentration in the rock mass within the area planned for exploitation, and(3) the assessment of the impact of mining tremors on the surface. This preliminary geomechanical analysis assesses the propensity of the rock mass to dynamic breakage and provides quantitatively the level of rockburst hazard. The paper presents Polish experience in rockburst hazard assessment with the use of geomechanical method, as well as some solutions and examples of such analyses.Piotr Malkowski Zbigniew Niedbalski 2020International Journal of Mining Science and Technology2020,30,3:14
6Land Surface Displacement Geohazards Monitoring Using Multi-temporal InSAR Techniques显示文摘China has been affected by some of the world’s most serious geological disasters and experiences high economic damage every year.Geohazards occur not only in remote areas but also in highly populated cities.In the framework of the Dragon-432365 Project,this paper presents the main results and the major conclusions derived from an extensive exploitation of Sentinel-1,ALOS-2(Advanced Land Observing Satellite 2),GF-3(Gao Fen Satellite 3),and latest launched SAR(Synthetic Aperture Radar),together with methods that allow the evaluation of their importance for various geohazards.Therefore,in the scope of this project,the great benefits of recent remote sensing data(wide spatial and temporal coverage)that allow a detailed reconstruction of past displacement events and to monitor currently occurring phenomena are exploited to study different areas and geohazards problems,including:surface deformation of mountain slopes;identification and monitoring of ground movements and subsidence;landslides;ground fissure;and building inclination studies.Suspicious movements detected in the different study areas were cross validated with different SAR sensors and truth data.Guang LIU Perski ZBIGNIEW Salvi STEFANO Thiebes BENNI Lixin WU Jinghui FAN Shibiao BAI Lianhuan WEI Shiyong YAN Rui SONG Bignami CHRISTIAN Tolomei CRISTIANO Stefan SCHNEIDERBAUER Joao Sousa JOAQUIM 2021Journal of Geodesy and Geoinformation Science2021,4,1:13
7Effect of NCPB and VSPL on pain and quality of life in chronic pancreatitis patients显示文摘AIM: To compare the effects of neurolytic celiac plexus block (NCPB) and videothoracoscopic splanchnicectomy (VSPL) on pain and quality of life of chronic pancreatitis (CP) patients.METHODS: Forty-eight small duct CP patients were treated invasively with NCPB (n = 30) or VSPL (n = 18) in two non-randomized, prospective, case-controlled protocols due to chronic pain syndrome, and compared to a control group who were treated conservatively (n = 32). Visual analog scales were used to assess pain and opioid consumption rate was evaluated. In addition, the quality of life was measured using QLQ C-30 for NCPB and FACIT for VSPL.Although both questionnaires covered similar problems,they could not be compared directly one with another.Therefore, the studies were compared by meta-analysis methodology.RESULTS: Both procedures resulted in a significant positive effect on pain of CP patients. Opioids were withdrawn totally in 47.0% of NCPB and 36.4% of VSPL patients,and reduced in 53.0% and 45.4% of the respective patient groups. No reduction in opioid usage was observed in the control group. In addition, fatigue and emotional well-being showed improvements. Finally, NCPB demonstrated stronger positive effects on social support, which might possibly be attributed to earlier presentation of patients treated with NCPB.CONCLUSION: Both invasive pain treatment methods are effective in CP patients with chronic pain.Andrzej Basinski Tomasz Stefaniak Ad Vingerhoets Wojciech Makarewicz Lukasz Kaska Aleksander Stanek Andrzej J.Lachinski Zbigniew Sledzinski 2005World Journal of Gastroenterology2005,11,32:10
8可信计算的产业趋势和研究(英文)显示文摘可信计算实验研究已经进行了30多年,特别是在航空、航天、金融、证券、交通等安全关键领域取得了令人瞩目的成就.为了从数量和质量两方面综述可信计算的发展和进一步推动可信计算的研究,文中分析了可信计算的产业趋势,包括:(1)差错源的变化;(2)复杂性的迅速增加;(3)计算设备总量的增加.针对每一种趋势,指出了那些可以应用于终端产品或实验性产品以及生产这些产品过程的研究技术.文中的研究给出一个框架,既能反映可信计算过去的研究情况,也指明了今后的研究需求.SIEWIOREK Daniel P. 杨孝宗 CHILLAREGE Ram KALBARCZYK Zbigniew T. 2007计算机学报2007,30,10:9
9Underexpression of LATS1 TSG in colorectal cancer is associated with promoter hypermethylation显示文摘AIM:To investigate large tumor suppressor 1 (LATS1 ) expression, promoter hypermethylation, and microsatellite instability in colorectal cancer (CRC).METHODS:RNA was isolated from tumor tissue of 142 CRC patients and 40 colon mucosal biopsies of healthy controls. After reverse transcription, quantitative polymerase chain reaction (PCR) was performed, and LATS1 expression was normalized to expression of the ACTB and RPL32 housekeeping genes. To analyze hypermethylation, genomic DNA was isolated from 44 tumor CRC biopsies, and methylation-specific PCR was performed. Microsatellite instability (MSI) status was checked with PCR using BAT26, BAT25, and BAT40 markers in the genomic DNA of 84 CRC patients, followed by denaturing gel electrophoresis. RESULTS:Decreased LATS1 expression was found in 127/142 (89.4%) CRC cases with the average ratio of the LATS1 level 10.33 ± 32.64 in CRC patients vs 32.85 ± 33.56 in healthy controls. The lowest expression was found in Dukes' B stage tumors and G1 (welldifferentiated) cells. Hypermethylation of the LATS1 promoter was present in 25/44 (57%) CRC cases analyzed. LATS1 promoter hypermethylation was strongly associated with decreased gene expression; methylated cases showed 162× lower expression of LATS1 than unmethylated cases. Although high-grade MSI (mutation in all three markers) was found in 14/84 (17%) cases and low-grade MSI (mutation in 1-2 markers) was found in 30/84 (36%) cases, we found no association with LATS1 expression. CONCLUSION:Decreased expression of LATS1 in CRC was associated with promoter hypermethylation, but not MSI status. Such reduced expression may promote progression of CRC.Piotr M Wierzbicki Krystian Adrych Dorota Kartanowicz Marcin Stanislawowski Anna Kowalczyk Janusz Godlewski Iwona Skwierz-Bogdanska Krzysztof Celinski Tomasz Gach Jan Kulig Bartlomiej Korybalski Zbigniew Kmiec 2013World Journal of Gastroenterology2013,19,27:8
10Neutrophil engagement and septic challenge in acute experimental pancreatitis in rats显示文摘AIM: To investigate the influence of neutrophil adhesion molecule blockade with monoclonal antibody (MoAb CD11b) and E. coli lipopolysaccharide (LPS)administration on experimental acute pancreatitis (AP).METHODS: AP was induced by four ip injections of cerulein (Cn) at 1-h intervals. MoAb CD 11b and LPS were administered at the beginning of the experiment.RESULTS: The neutrophil count and chemiluminescence were diminished at the beginning of AP. The oxidative stress parameters were found within the pancreatic gland. MoAb CD 11b used for AP resulted in a significant reduction of pancreatic infiltration and pancreatitis oxidative stress parameters. Serum interleukin-6 (IL-6)was not detected in AP animals, whereas high serum IL-6 concentration was noted only in animals receiving LPS.CONCLUSION: Neutrophils are involved in pancreatic damage in the early stage of AP. Neutrophil infiltration reduction protects the pancreatic gland from destruction during AP. LPS does not change the early course of Cn pancreatitis in rats.Stanisiaw Ha Marek Dobosz Jan J Kaczor Robert Rzepko Ewa Aleksandrowicz-Wrona Zdzislaw Wajda Zbigniew ledzi■ski Jacek Krajewski 2005World Journal of Gastroenterology2005,11,41:7
11微载荷含油轴承摩擦性能研究 Ⅱ.摩擦试验分析显示文摘采用自行研制的径向轴承微载荷摩擦试验机研究了微载荷下径向含油轴承的摩擦性能,采用小波方法对试验数据进行滤波降噪.结果表明,含油轴承在稳定微载荷状态下的瞬态摩擦系数不固定,且随着润滑剂、轴承转速、径向载荷与混合润滑状态等因素而变化.在微载荷状态下,当600r/min、采用液晶添加剂(5CB)与46号机械油以体积比1%-2%配制的润滑剂润滑时,平均摩擦系数达到最小值;当转速从600r/min增至3000r/min时,平均摩擦系数由小变大、再变小;瞬态摩擦系数随着载荷从0.5N增至10.0N呈现高-低-稳定的变化趋势.与混合润滑状态相比,充分润滑下的摩擦系数较大;当混合润滑时,在主轴转速为1500—2400r/min下的摩擦系数出现不稳定.张建忠 汪久根 马家驹 Zygmunt Rymuza Zbigniew Kusznierewicz 2006摩擦学学报2006,26,5:7
12多模式雷达在矿区沉降监测中的应用研究显示文摘合成孔径雷达差分干涉测量(DInSAR)技术在地表形变监测方面已得到广泛应用。介绍了将差分InSAR技术运用于矿区地表沉降监测,获得了河北峰峰煤矿地表Envisat/ASAR和ALOS/PALSAR的雷达形变干涉相位图,并对Envisat C波段和ALOS L波段的形变干涉相位图进行了相干特性和相位特性的分析。通过综合考虑C波段和L波段的优势与不足,将两者联合使用,实验表明利用多模式雷达数据对矿区地表沉降进行检测的可行性。同时,通过对雷达干涉相位图的分析,能够及时提供正在进行地下开采活动的矿区地理位置。刘金龙 郭华东 宋瑞 Zbigniew Perski 刘广 赵峰 范景辉 闫世勇 阮智星 2012遥感技术与应用2012,27,4:7
13Modelling of the Process of Coal Dust Combustion in a Cyclone Furnace显示文摘This study presents the concept of a cyclone furnace for coal dust oxy-fuel combustion and gasification. The results of numerical calculations for the combustion and gasification processes were also presented.Robert Zarzycki Zbigniew Bis 2017Journal of Thermal Science2017,26,2:6
14Structure-activity relationship in water-gas shift reaction over gold catalysts supported on Y-doped ceria显示文摘The utilization of pure hydrogen as an energy source in fuel cells gave rise to renewed interest in developing active and stable water-gas shift catalysts. Gold catalysts have proven to be very efficient for water-gas shift reaction at low temperature. The aim of the present study was to investigate the effect of:(i) different preparation methods(impregnation and coprecipitation) to obtain a modified ceria support,and(ii) the amount of Y_2 O_3(1.0 wt%, 2.5 wt%, 5.0 wt% and 7.5 wt%) as dopant on the water-gas shift activity of Au/CeO_2 catalysts. An extended characterization by means of S_(BET), XRD, HRTEM/HAADF, FTIR,H_2-TPR and CO-TPR measurements in combination with careful evaluation of the catalyst behavior allowed to shed light on the parameters governing the water-gas shift activity. The catalysts show very high activity(>90% CO conversion) in the temperature range 180-220 ℃,with a slightly better performance of the gold catalysts on supports prepared by impregnation. The decreased activity with increasing Y_2 O_3 concentration is related to the hindering of oxygen mobility due to ordering of surface oxygen vacancies in vicinity of segregated Y^(3+). The effect of catalyst pre-treatments and the stability of the best performing samples were examined as well.Tatyana Tabakova Lyuba Ilieva Ivan Ivanov Maela Manzoli Rodolfo Zanella Petya Petrova Zbigniew Kaszkur 2019Journal of Rare Earths2019,37,4:4
15A New Dynamical Evolutionary Algorithm Based on Statistical Mechanics显示文摘In this paper, a new dynamical evolutionary algorithm (DEA) is presented basedon the theory of statistical mechanics. The novelty of this kind of dynamical evolutionary algorithmis that all individuals in a population (called particles in a dynamical system) are running andsearching with their population evolving driven by a nev selecting mechanism. This mechanismsimulates the principle of molecular dynamics, which is easy to design and implement. A basictheoretical analysis for the dynamical evolutionary algorithm is given and as a consequence twostopping criteria of the algorithm are derived from the principle of energy minimization and the lawof entropy increasing. In order to verify the effectiveness of the scheme, DEA is applied to solvingsome typical numerical function minimization problems which are poorly solved by traditionalevolutionary algorithms. The experimental results show that DEA is fast and reliable.李元香 邹秀芬 康立山 Zbigniew Michalewicz 2003Journal of Computer Science & Technology2003,18,3:4
16微载荷含油轴承摩擦性能研究 Ⅰ.摩擦试验机设计显示文摘研制了1种针对径向轴承的微载荷摩擦试验机,介绍了其工作原理及结构,即利用外加载荷抵消浮动测试架重量以施加微小载荷,并利用激光位置传感器(PSD传感器)实现无接触位移测量;同时测量了摩擦副的转动角度并计算出摩擦系数;采用摩擦转角测量法和外加力矩平衡摩擦法测量微载荷下的摩擦性能,以测量时间末端位置作为位置基准,通过极限偏载平衡进行载荷标定.结果表明:微载荷摩擦试验机可应用于径向轴承在微小载荷下的摩擦力测量;可以通过在较大范围内设置结构参数来研究径向轴承的摩擦特性;并可利用数据采集技术研究速度和载荷连续变化条件下的摩擦性能.张建忠 汪久根 马家驹 Rymuza Zygmunt Kusznierewicz Zbigniew 2006摩擦学学报2006,26,3:4
17Boron nitride nanotube reinforced polyurethane composites显示文摘Bulk-sized boron nitride nanotube (BNNT) reinforced polyurethane (PU) composites at different volume contents have been produced. A large quantity of BNNT fillers are synthesized by a boron ink method. Compared to the neat PU, the 0.5 vol% and 2.0 vol% BNNT reinforced composites show 38.2% and 6.3% increases in compressive modulus, respectively. The relatively less enhanced compressive modulus of the 2.0 vol% composite may be due to the agglomerations of nanotubes at high volume percentages. Contrary to normal behaviour, the composites show decreasing Rockwell (HRR) hardness values with an increasing volume fraction.Luhua Li Ying Chen Zbigniew H. Stachurski 2013Progress in Natural Science:Materials International2013,23,2:3
18Metformin in patients with non-alcoholic fatty liver disease: A randomized, controlled trial显示文摘John Willy Haukeland Zbigniew Konopski Heidi Beate Eggesb? Hilde L?land von Volkmann Gabriele Raschpichler Kristian Bj?ro Terese Haaland Else Marit L?berg K?re Birkeland 2009Scandinavian Journal of Gastroenterology2009,,7:3
19Cross-Wedge Rolling of Shafts With an Eccentric Step显示文摘A new concept for forming eccentric shafts on the basis of the cross-wedge rolling(CWR)process was presented.This concept was based on the application of special guides,which,by acting on a billet,lead to its controlled movement in the vertical direction.This movement made possible eccentric cutting of tools into the billet.FEM calculations and experimental rolling tests clearly confirmed the effectiveness of the proposed forming method.Zbigniew Pater 2011Journal of Iron and Steel Research(International)2011,18,6:3
20因地而异的气候变化健康影响需要因地而异的应对措施显示文摘气候变化的趋势正在对全球的人群健康造成巨大的威胁,迫切需要各国密切协作,积极应对气候变化,为此《柳叶刀》(The Lancet)杂志成立了'柳叶刀健康与气候变化委员会'(以下简称柳叶刀委员会),评估气候变化对人群健康的影响,并寻找保障人群健康的应对气候变化措施.柳叶刀委员会在2015年报告基础上,启动了'柳叶刀倒计时:追踪健康与气候变化进展'项目(以下简称柳叶刀倒计时)[1],每年在《柳叶刀》上发表全球应对气候变化和保护人群健康的最新进展.蔡闻佳 张弛 孙凯平 艾思奇 白玉琪 鲍俊哲 陈彬 程亮亮 崔学勤 戴瀚程 底骞 董文轩 窦德景 范维澄 范星 高仝 耿阳 关大博 郭亚菲 胡艺馨 华峻翊 黄存瑞 黄弘 黄建斌 蒋婷婷 焦珂笛 Gregor Kiesewetter Zbigniew Klimont Pete Lampard 李传玺 李奇玮 李湉湉 李瑞奇 林波荣 林华亮 刘欢 刘起勇 刘小波 刘昱甫 刘钊 刘志东 刘竹 楼书含 鲁晨曦 罗勇 马伟 Alice McGushin 牛彦麟 任超 任浙豪 阮增良 Wolfgang Schöpp 苏婧 屠滢 王杰 王琼 王雅琪 王宇 Nick Watts 肖淙曦 谢杨 熊辉 徐名芳 徐冰 许磊 杨军 杨廉平 俞乐 岳玉娟 张少辉 张仲宸 赵继尧 赵亮 赵梦真 赵哲 周景博 宫鹏 2021科学通报2021,66,31:3
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