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| 1 | AA4343/AA3003铝合金薄板钎焊接头的显微组织特征显示文摘采用气氛保护钎焊工艺 ,对AA434 3/AA30 0 3铝合金复合板材料的钎焊接头组织特征 ,及其与焊接工艺的关系和对接头区显微硬度的影响进行了研究。实验结果表明 ,钎焊过渡区由单相α(Al)固溶体层和Si扩散层组成 ,它们的厚度随钎焊条件而发生变化。远离焊接区有一个α(Al)固溶体残余层 ,它的厚度保持 2 0 μm基本不变 ,与焊接参数和材料性质无关。 | 潘春旭 Dusan P.Sekulic | 2002 | 中国有色金属学报2002,12,3: | 14 |
| 2 | 全球大停电的经验教训显示文摘根据国际能源机构的预测,在未来20多年里,发展中国家和新兴国家的耗电量将增加220%,而工业化国家则仅增加37%。现有电力系统负荷的大幅度增加将产生瓶颈效应和可靠性问题。历年发生的欧美州大停电清楚地表明,相邻系统间的紧密电气耦合对于重负荷互联系统而言,可能存在无法控制的级联事故风险。介绍美加大停电和欧洲大停电事件,讨论大停电的经验教训。对避免环流、防止电压崩溃等解决大型电力系统稳定性问题的措施及“防火墙”的实施进行了说明。阐述涉及系统改善的高压直流输电(HVDC)和灵活交流输电(FACTS)技术的优点。 | Gǖnther Beck Dusan Povh Dietmar Retzmann Erwin Tehsch | 2007 | 中国电力2007,40,10: | 11 |
| 3 | Comethylation of p16 and MGMT genes in colorectal carcinoma:Correlation with clinicopathological features and prognostic value显示文摘AIM: To investigate the significance of p16 and O6- methylguanine-DNA methyltransferase (MGMT) genes promoter hypermethylation and K-ras mutations on colorectal tumorigenesis and progression. METHODS: p16 and MGMT methylation status was examined on 47 tumor samples, and K-ras mutational status was examined on 85 tumor samples. For methylation analysis, a methylation specific PCR (MS-PCR) method was used. RESULTS: p16 and MGMT promoter methylation was found in 51% (24/47) and 43% (20/47) of CRCs, respectively, and the K-ras mutation was found in 44% (37/85) of CRCs. Comethylation of p16 and MGMT genes was significantly associated with lower aggressiveness of the disease within a two-year period of observation. Only 27% of patients with simultaneous p 16 and MGMT methylation showed the detectible occurrence of metastasis and/or death, compared to 67% of patients without double methylation or with no methylation (3/11 vs 22/33, P < 0.05, χ2-test). In addition, p16 and MGMT comethylation showed a trend toward an association with longer survival in patients with CRCs (35.5 ± 6.0 mo vs 23.1 ± 3.2 mo, P = 0.072, Log-rank test). Progression of the disease within a two-year period was observed in 66% of patients carrying the K-ras mutation, compared to only 19% of patients with wild type K-ras (29/44 vs 7/37, P < 0.001, χ2-test). The presence of the K-ras mutation significantly correlated to shortened overall survival (20.0 ± 1.9 mo vs 37.0 ± 1.8 mo, P < 0.001, Log-rank test). The comethylation of p16 and MGMT genes was significantly associated with lower aggressiveness of the disease even when K-ras mutations were included in the analysis as an independent variable. CONCLUSION: Our data suggest that comethylation of promoters of p 16 and MGMT genes could have a prognostic value in patients with CRC. Specifically, concurrent methylation of both genes correlates with better prognosis. | Koviljka Krtolica Milena Krajnovic Slavica Usaj-Knezevic Dragan Babic Dusan Jovanovic Bogomir Dimitrijevic | 2007 | World Journal of Gastroenterology2007,13,8: | 10 |
| 4 | Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction显示文摘After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) models.In this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation. | Guifu ZHANG Vivek N.MAHALE Bryan J.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC Jidong GAO Ming XUE Youngsun JUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG Jian ZHANG J.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG Caleb FULTON Richard J.DOVIAK | 2019 | Advances in Atmospheric Sciences2019,36,6: | 9 |
| 5 | 新疆北部白冠攀雀的巢与巢址选择显示文摘2008年4—7月,在新疆北部对白冠攀雀巢址选择进行了研究。白冠攀雀的营巢习性特殊,巢呈囊袋状,结构甚为精致。对于白冠攀雀巢的研究,采用总面积调查法,进行地毯式的搜寻,并结合标图法对其进行标记,绘制分布图。研究结果共发现巢125个,营巢位于于临近湖泊、河流等水域附近的柳树、杨树、桦树等阔叶树上。营巢树种以柳树为主,占68.80%。巢的高度平均为(5.3±2.5)m,营巢于乔木的中下部(约1/3处),约70%的巢离河边不足30m。对于巢址选择的研究,将原始记录中与巢址选择有关的特征变量进行主成分分析,分析表明,影响白冠攀雀巢址选择的主要因素有4种,依次为:郁闭度因素(包括营巢树胸径、巢上郁闭度)、营巢树种因素(包括营巢树种、树高、巢位高度和乔木种类)、方位因素(包括距河边距离和巢向)、食物与巢材因素。 | 梅宇 马鸣 胡宝文 Dusan Brinkhuizen Tamas Szekely | 2009 | Zoological Research2009,30,5: | 7 |
| 6 | Graphene oxide as an antimicrobial agent can extenCthe vase life of cut flowers显示文摘"PlantNanOmics" is an emerging topic in agricultural research that explores thepotential effect of application of nanomaterials on plant growth. Graphene oxide(GO) has excellent properties due to its basal carbon plane and oxygen-containingfunctional groups. In the present work, the antimicrobial activity of GO wasexploited to extend the vase life and improve the quality of cut roses (cv. Carola).The results revealed that the cut roses cultivated in low doses of GO (0.1 mg/L)had longer vase life, larger diameter, and better water relations. Microbialcontaminations at the basal stem end is the most common reason for stemblockage that causes water stress and early wilting of cut flowers. GO wasfound to act as a germicide, effectively inhibiting the microbial growth atthe cut stem end and improving water uptake and water balance of cut roses.Therefore, GO can serve as a promising preservative to increase the ornamentalvalue of cut flowers. | Yijia He Lichao Qian Xu Liu Ruirui Hu Meirong Huang Yule Liu Guoqiang Chen Dusan Losic Hongwei Zhu | 2018 | Nano Research2018,11,11: | 6 |
| 7 | Antioxidant efficiency of lycopene on oxidative stress-induced damage in bovine spermatozoa显示文摘Background: Lycopene(LYC) is a natural carotenoid with powerful reactive oxygen species(ROS) scavenging activities. The aim of this study was to investigate if lycopene has the ability to reverse ROS-mediated alterations to the motility, viability and intracellular antioxidant profile of bovine spermatozoa subjected to ferrous ascorbate(Fe AA). Spermatozoa were washed out of fresh bovine semen, suspended in 2.9 % sodium citrate and subjected to LYC treatment(0.25, 0.5, 1 or 2 mmol/L) in the presence or absence of Fe AA(150 μmol/L Fe SO_4 and 750 μmol/L ascorbic acid) during a 6 h in vitro culture. Spermatozoa motion characteristics were assessed using the Sperm Vision?computer-aided sperm analysis(CASA) system. Cell viability was examined with the metabolic activity(MTT) assay,ROS generation was quantified via luminometry and the nitroblue-tetrazolium(NBT) test was applied to quantify the intracellular superoxide formation. Cell lysates were prepared at the end of the in vitro culture to investigate the intracellular activity of superoxide dismutase(SOD), catalase(CAT), glutathione peroxidase(GPx) as well as the concentrations of glutathione(GSH) and malondialdehyde(MDA).Results: FeA A treatment led to a reduced spermatozoa motility(P < 0.001), viability(P < 0.001) and a decline of the antioxidant capacity of spermatozoa(P < 0.001) but increased the ROS generation(P < 0.001), superoxide production(P < 0.001) and lipid peroxidation(P < 0.001). LYC administration resulted in a preservation of the spermatozoa motion parameters(P < 0.001), mitochondrial activity(P < 0.001) and antioxidant characteristics(P < 0.001 with respect to SOD;P < 0.01 in relation to CAT; P < 0.05 as for GPx and GSH) with a concentration range of 1 and 2 mmol/L LYC revealed to be the most effective.Conclusions: Our results suggest that LYC exhibits significant ROS-scavenging and antioxidant properties which may prevent spermatozoa alterations caused by oxidative stress, and preserve the functionality of male reproductive cells. | Eva Tvrdá Anton Kovácik Eva Tusimová Dusan Paál Alica Mackovich Jakhongir Alimov Norbert Lukác | 2017 | Journal of Animal Science and Biotechnology2017,8,1: | 3 |
| 8 | Dynamic role of myofibroblasts in oral lesions显示文摘Fibroblasts are the most abundant cellular components of connective tissue. They possess phenotypical heterogenicity and may be present in the form of smooth muscle cells or myofibroblasts(MFs). MFs are spindle-shaped cells with stress fibres and welldeveloped fibronexus,and they display α-smooth muscle actin immunohistochemically and smoothmuscle myofilaments ultrastructurally. MFs play a crucial role in physiological and pathological processes. Derived from various sources,they play pivotal roles not only by synthesizing and producing extracellular matrix components,such as other connective tissue cells,but also are involved in force production. In the tissue remodelling phase of wound closure,integrinmediated interactions between MFs and type I collagen result in scar tissue formation. The tumour stroma in oral cancer actively recruits various cell types into the tumour mass,where they act as different sources of MFs. This article reviews the importance of MFs and its role in pathological processes such as wound healing,odontogenic cysts and tumours,salivary gland tumours,oral preneoplasia,and oral squamous cell carcinoma. Research oriented on blocking the transdifferentiation of fibroblasts into MFs can facilitate the development of noninvasive therapeutic strategies for the treatment of fibrosis and/or cancer. | Neeta Bagul Anjali Ganjre SN Goryawala Rahul Kathariya Shrikant Dusane | 2015 | World Journal of Clinical Oncology2015,6,6: | 2 |
| 9 | Relevance of low viral load in haemodialysed patients with chronic hepatitis C virus infection显示文摘AIM: To identify predictors of sustained virological response in hemodialysed patients treated by PEGinterferon α for chronic hepatitis C, genotype 1.METHODS: The sustained virological response(SVR) rate, IL28 B genotype, IFNL4 genotype, initial viral load(IVL) and other pretreatment variables in 39 endstage renal disease patients(ESRD) on maintenance haemodialysis(HD) infected with hepatitis C virus(HCV), genotype 1b, were compared with a control group of 109 patients with normal kidney function treated within the same period. All the patients were treatment nave and had well compensated liver disease. The ESRD patients received 135 μg of PEGylated interferon α-2a(Peg IFN-α) weekly and a reduced dose of ribavirin(RBV) was administered to 23/39 patients with an initial haemoglobin level > 10 g/d L. Control group patients were given standard doses of Peg IFN-α and RBV. SVR was assessed as HCV RNA negativity 24 wk post-treatment. A t-test or ANOVA were used for comparisons of the means and a χ2 testcompared the frequencies.Logistic regression was used to determine significant predictors of SVR.Cutoff values for continuous variables were obtained from Receiver Operating Characteristic analysis.RESULTS:The distribution of IL28B rs12979860 CC,CT and TT genotypes in the ESRD group was 28.2%,64.1%and 7.7%,respectively,and 19.3%,62.4%and18.3%in the controls.The IFNL4 genotype was in almost absolute linkage disequlibrium with IL28B.The proportion of patients with a low IVL(<600000 IU/m L)was significantly higher in the ESRD group than in the controls(28/39,71.8%vs 51/109,46.8%,P=0.009),as was the proportion of patients with low IVL in IL28B CC carriers compared with non-CC carriers in the ESRD group(10/11,90.9%vs 18/28,64.3%,P=0.0035).This difference was not found in the controls(7/22,31.8%vs 44/87,50.6%,P=0.9).The overall SVR rate was 64.1%(25/39)in the ESRD group and 50.5%(55/109)in the control group(P=0.19).11/11(100%)and 19/22(86.4%)IL28B CC patients achieved SVR in the ESRD and control groups,respectively.A statistically significant association between SVR and IL28B and IFNL4 variants was found in both groups.The ESRD patients who achieved SVR showed the lowest IVL[median 21000,interquartile range(IQR):6000-23000IU/m L],compared with ESRD individuals without SVR(1680000,IQR:481000-6880000,P=0.001),controls with SVR(387000,IQR:111000-1253000)and controls without SVR(905000,IQR:451000-3020000).In ESRD,an IVL<600000 IU/m L was strongly associated with SVR:24/28(85.7%)patients who achieved SVR had viraemia below this threshold.CONCLUSION:Haemodialysis decreases the viral load,especially in IL28B CC genotype carriers.A low IVL was the strongest predictor of SVR in ESRD patients identified in multivariate analysis. | Jan Sperl Sona Frankova Renata Senkerikova Magdalena Neroldova Vaclav Hejda Miroslava Volfova Dusan Merta Ondrej Viklicky Julius Spicak Milan Jirsa | 2015 | World Journal of Gastroenterology2015,21,18: | 2 |
| 10 | Immobilization of biomacromolecules on poly-L-lactide surface via a layer-by-layer method for the improving of its cytocompatibility to bone marrow stromal cells显示文摘Hyaluronic acid (HA) and chitosan (CS) were immobilized on the surface of poly-L-lactide (PLLA) by the following procedure: Firstly, PLLA was aminolyzed with 1, 6-hexanediamine, and part of the PLLA surface ester groups were converted to free amino groups. Then negatively charged hyaluronic acid and positively charged chitosan were deposited onto the surface of aminolyzed PLLA film in a layer-by-layer assembly manner. The effect of the layer-by- layer deposition was evaluated by ATR-FTIR spectroscopy, Raman spectroscopy and static contact angle measurements. The cytocompatibility of PLLA sample to bone marrow stromal cells (BMSCs) was improved after modification with chitosan and HA. The cell attachment, activity, and prolif- eration on CS/HA modified PLLA films were enhanced comparing with the control. The cells cultured on the modi- fied PLLA samples excreted abundant cytoplasm and can differentiate to vascular smooth muscle (SM)-like (SM-like) cells. A macroporous three-dimensional PLLA scaffold was prepared by integrating both the technique of freeze-drying and particle leaching. Layer-by-layer modification by HA/CS and cell culture was also applied on this scaffold. The scaf- fold cultured with BMSCs for 2 weeks has been tested suc- cessfully in vivo as a patch for repairing the artificial incision on canine pulmonary artery. | LU Delong MENG Sheng ZHONG Wei DU Qiang-guo GONG Li LIU Jinfen Dusan Bakos | 2005 | Chinese Science Bulletin2005,50,24: | 2 |
| 11 | Epidemiology of neuroendocrine cancers in an Australian population显示文摘 | Colin Luke Timothy Price Amanda Townsend Christos Karapetis Dusan Kotasek Nimit Singhal Elizabeth Tracey David Roder | 2010 | Cancer Causes & Control2010,,6: | 2 |
| 12 | IRRITABLE BOWEL SYNDROME, ANXIETY, DEPRESSION AND PERSONALITY CHARACTERISTICS显示文摘 | Suzana Tosic-Golubovic Srbobran Miljkovic Aleksandar Nagorni Dusan Lazarevic Gordana Nikolic | 2010 | Psychiatria Danubina2010,,3: | 2 |
| 13 | 海南蒲桃种子促进实验性糖尿病胰岛细胞再生的研究(英文)显示文摘目的:研究海南蒲桃(Syzygium cumini)种子提取物SC2对链脲霉素诱导的实验性糖尿病小鼠胰岛细胞再生的作用。方法:瑞士小鼠腹膜内注射链脲霉素诱导实验性糖尿病。治疗组给予口服海南蒲桃种子提取物SC2(2g/L)共21d,期间有规律地测量小鼠血糖和体质量。第20天进行口服葡萄糖耐量实验。实验结束后处死小鼠并分离组织。测量肝组织内葡萄糖-6-磷酸脱氢酶活性、肝糖元和肌糖元含量、血浆胰岛素及血浆C肽水平。结果:经SC2治疗的实验性糖尿病小鼠血糖水平恢复正常,肝组织内葡萄糖-6-磷酸脱氢酶活性升高,肝糖元和肌糖元含量升高,血浆胰岛素和C肽水平升高。组织学结果显示,SC2治疗组出现新生胰岛细胞,提示SC2具有促进胰岛细胞生成的作用。这些新生胰岛细胞可以在实验性糖尿病小鼠体内产生胰岛素。结论:本研究结果证明了海南蒲桃种子提取物SC2在胰岛再生和胰岛素分泌中的作用。这种作用结合其他的治疗策略可能在将来为临床控制糖尿病提供一个更理想的途径。 | Menakshi Bhat Dusane Bimba N.Joshi | 2011 | 中西医结合学报2011,9,12: | 2 |
| 14 | Automatic Detection of Gust Fronts显示文摘 | Hiroshi Uyeda Dusan S Zrnic | 1986 | J Atmos Oceanic Technol1986,3,: | 1 |
| 15 | Changes in nitrogen and phosphorus status under general and waste irrigation显示文摘 | Shrivastava V S Dusane A B 2000 | 2000 | Pollution Research2000,19,: | 1 |
| 16 | Robust decentralized turbine/governor control using linear matrix inequalities显示文摘 | Dragoslav D siljak Dusan M Stipanovic Aleksandar I Zecevic | 2002 | IEEE Transactions on Power Systems2002,17,3: | 1 |
| 17 | Bending collapse of rectangular and square section tubes 显示文摘 | Dusan Kecman | 1983 | International Journal of Mechanical Sciences1983,25,9: | 1 |
| 18 | nvestigation of metal-flavonoid chelates and the determination of flavonoids via metal-flavonoid complexing reactions显示文摘 | MALESEV DUSAN KUNTIC VESNA | 2007 | Journal of the Serbian Chemical Society2007,72,10: | 1 |
| 19 | AlFe层柱粘土催化剂催化甲苯在水中的降解(英文)显示文摘The catalytic wet peroxide oxidation (CWPO) of toluene on two bentonite-based AlFe-pillared clays (PILCs) with different iron contents was investigated. The PILCs were obtained using bentonite clay from Bogovina,Serbia. The change in chemical and phase composition and textural properties of the starting clay and synthesized catalysts was monitored using X-ray diffraction,inductively coupled plasma optical emission spectrometry,UV-Vis diffuse reflectance spectrometry,and physisorption of nitrogen. The catalytic performance was examined using gas chromatography. The Na-exchange process lowered the (001) smectite basal plane spacing,but the clay retained its swelling properties,while the pillaring process increased it. The surface areas of both synthesized pillared clays increased to similar values although their Fe content was different. At 37 ℃,both catalysts show significant toluene degradation,with the one richer in Fe having higher efficiency. The leaching of the active cations during reaction was negligible,and the catalysts were stable. AlFe-pillared clay catalysts can be used in CWPO for the elimination of BTEX compounds from plant effluent streams. | Predrag BANKOVIC Aleksandra MILUTINOVIC-NIKOLIC Zorica MOJOVIC Aleksandra ROSIC ZeljkoUPIC Davor LONAREVIC Dusan JOVANOVIC | 2009 | 催化学报2009,30,1: | 1 |
| 20 | Decrease of C^1'1 property in vector optimization显示文摘 | DUSAN B KAREL P | | (In print)0,,: | 1 |