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一种相机与数控运动机构间位姿关系的标定技术

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机械制造与自动化 2016年第5期45卷 44-47,68页

作者：唐君萍夷宏明张丽艳南京航空航天大学机电学院江苏南京210016

将视觉检测技术与数控运动机构相结合,利用数控运动机构带动视觉成像系统做精确可控的运动可以有效弥补视觉成像系统检测范围有限的问题,且兼具高精度、高效率、非接触、自动化程度高等优点。就相机与数控运动机构间位姿关系的标定进行... 详细信息

将视觉检测技术与数控运动机构相结合,利用数控运动机构带动视觉成像系统做精确可控的运动可以有效弥补视觉成像系统检测范围有限的问题,且兼具高精度、高效率、非接触、自动化程度高等优点。就相机与数控运动机构间位姿关系的标定进行了研究,给出了一种适合工程应用的标定方法。

关键词：视觉检测位姿标定标定板

Preconcentration of Germanium(iv) on Styrene-Maleic Anhydride Copolymer Modified with Aminobenzoic Acids and Its Spectrophotometric Determination with Bis(2,3,4-trihydroxyphenylazo)benzidine

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American journal of Analytical Chemistry 2012年第12期3卷 790-799页

作者： Kamran T. Mahmudov Rafiga A. Aliyeva Sahil Z. Hamidov Famil M. Chyragov Samira R. Mardanova Maximilian n. Kopylovich Armando j. L. Pombeiro Centro de Química Estrutural Complexo I Instituto Superior Técnico Technical University of Lisbon Lisbon Portugal Department of Chemistry Baku State University Baku Azerbaijan

The styrene-maleic anhydride copolymer was chemically modi?ed, in the presence of formaldehyde, with 4-amino-2-hydroxybenzoic acid or 4-aminobenzoic acid giving sorbents S1 and S2, respectively. The specific sorption behaviour of S1 and S2 towards germanium(iv) was examined and optimized, the preconcentrated germanium(iv) after desorption being spectrophotometrically quantified with bis(2,3,4-trihydroxyphenylazo)benzidine in the presence of hexamethylenetetramine, phenanthroline and 2,2’-bipyridine. The dynamic sorption capacity and detection limits (3σ, n = 17) of germanium were found to be 152.2 and 127.1 mg·g–1, and 0.9 and 1.1 ng·mL–1, for S1 and S2, accordingly. The application of S1 and S2 was demonstrated for the selective preconcentration/determination of germanium in seawater and water obtained after oil pumping.

关键词： Germanium(iv) Preconcentration Sorption Spectrophotometric Determination

Impacts of climate warming on hybrid zone movement： Geographically diffuse and biologically porous ＂species borders＂

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Insect Science 2011年第2期18卷 121-159页

作者： j. Mark Scriber Department of Entomology Michigan State University East Lansing Michigan McGuire Center for Lepidoptera and Biodiversity Flonda Museum of Natural History University of Florida Gainesville Florida USA

The ecology and evolutionary biology of insect-plant associations has real- ized extensive attention, especially during the past 60 years. The classifications （categorical designations） of continuous variation in biodiversity, ranging from global patterns （e.g., lat- itudinal gradients in species richness/diversity and degree of herbivore feeding specialization） to localized insect-plant associations that span the biospectrum from polyphenisms, polymorphisms, biotypes, demes, host races, to cryptic species, remain academically contentious. Semantic and biosystematic （taxonomical） disagreements sometimes detract from more important ecological and evolutionary processes that drive diversification, the dynamics of gene flow and local extinctions. This review addresses several aspects of insect specialization, host-associated divergence and ecological （including ＂hybrid＂） speciation, with special reference to the climate warming impacts on species borders of hybridiz- ing swallowtail butterflies （Papilionidae）. Interspecific hybrid introgression may result in collapse of multi-species communities or increase species numbers via homoploid hybrid speciation. We may see diverging, merging, or emerging genotypes across hybrid zones, all part of the ongoing processes of evolution. Molecular analyses of genetic mosaics and genomic dynamics with ＂divergence hitchhiking＂, combined with ecological, ethological and physiological studies of＂species porosity＂, have already begun to unveil some answers for some important ecological/evolutionary questions. （i） How rapidly can host-associated divergence lead to new species （and why doesn＇t it always do so, e.g., resulting in ＂incom- plete＂ speciation）？（ii） How might ＂speciation genes＂ function, and how/where would we find them？（iii） Can oscillations from specialists to generalists and back to specialists help explain global diversity in herbivorous insects？（iv） How could recombinant interspecific hybridization lead to divergence an

关键词： cryptic species divergence hitchhiking ecologiealspeciation host associateddivergence mosaic genomes range limits recombinant hybrid species phylogeography,polyspecialists species boundaries

患子宫内膜癌日本妇女的主诉、患者特征与疾病预后的关系

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世界核心医学期刊文摘（妇产科学分册） 2006年第3期2卷 58-59页

作者： Kodama j. Seki n. Ojima Y. 郭培奋 Department of Obstetrics and Gynecology Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences 2-5-1 Shikata-cho Okayama 700-8558 Japan

Objective: To determine whether patient characteristics and presenting symptoms could be prognostic indicators for endometrial cancer in japanese women. Methods: Review of the medical charts, which included presenting symptoms and other patient characteristics, of 242 women who underwent surgical treatment for FIGO stage I-iv endometrial cancer. Results: FIGO stage, histologic grade, and lower abdominal pain were found to be significant independent factors for progression-free and overall survival. In contrast, abnormal uterine bleeding, comorbidities, and prior malignancy were not found to be prognostic factors. Conclusion: Lower abdominal pain was found to be an independent prognostic factor in endometrial cancer among japanese women.

关键词：疾病预后子宫出血预示作用

Generalizing plant–water relations to landscapes

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journal of Plant Ecology 2011年第1期4卷 101-113页

作者： R.H.Waring j.j.Landsberg College of Forestry Oregon State UniversityCorvallisOR 97331USA Withycombe Church LaneMt WilsonNSW 2786Australia

Aims Changing climate and land use patterns make it increasingly important that the hydrology of catchments and ecosystems can be reliably *** aim of this paper is to identify the biophysical factors that determine the rates of water vapor loss from different types of vegetation,and to seek,from an array of currently available satelliteborne sensors,those that might be used to initialize and drive landscape-level hydrologic *** Findings Spatial variation in the mean heights,crowd widths,and leaf area indices(LAI)of plant communities are important structural variables that affect the hydrology of *** stomatal conductance(G)imposes physiological limitation on transpiration by *** maximum value of G(Gmax)is closely linked to canopy photosynthetic capacity,which can be estimated via remote sensing of foliar chlorophyll or nitrogen *** be modeled as a nonlinear multipliable function of:(i)leaf–air vapor pressure deficit,(ii)water potential gradient between soil and leaves,(iii)photosynthetically active radiation absorbed by the canopy,(iv)plant nutrition,(v)temperature and(vi)the CO_(2) concentration of the *** surveys with Light Detection and Ranging(LiDAR)and interferometric RADAR,along with high-resolution spectral coverage in the visible,near-infrared,and thermal infrared bands,provide,along with meteorological data gathered from weather satellites,the kind of information required to model seasonal and interannual variation in transpiration and evaporation from landscapes with diverse and dynamic vegetation.

关键词： canopy stomatal conductance plant water relations process-based models remote sensing

Lumped Parameter Outflow Models for 1-D Blood Flow Simulations:Effect on Pulse Waves and Parameter Estimation

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Communications in Computational Physics 2008年第7期4卷 317-336页

作者： j.Alastruey K.H.Parker j.Peiro S.j.Sherwin Department of Aeronautics Imperial College LondonSouth Kensington CampusLondon SW72AZU.K Department of Bioengineering Imperial College LondonSouth Kensington CampusLondon SW72AZU.K.

Several lumped parameter,or zero-dimensional(0-D),models of the microcirculation are coupled in the time domain to the nonlinear,one-dimensional(1-D)equations of blood flow in large arteries.A linear analysis of the coupled system,together with in vivo observations,shows that:(i)an inflow resistance that matches the characteristic impedance of the terminal arteries is required to avoid non-physiological wave reflections;(ii)periodic mean pressures and flow distributions in large arteries depend on arterial and peripheral resistances,but not on the compliances and inertias of the system,which only affect instantaneous pressure and flow waveforms;(iii)peripheral inertias have a minor effect on pulse waveforms under normal conditions;and(iv)the time constant of the diastolic pressure decay is the same in any 1-D model artery,if viscous dissipation can be neglected in these arteries,and it depends on all the peripheral compliances and resistances of the *** this analysis,we propose an algorithm to accurately estimate peripheral resistances and compliances from in vivo *** algorithm is verified against numerical data simulated using a 1-D model network of the 55 largest human arteries,in which the parameters of the peripheral windkessel outflow models are known a *** and flow waveforms in the aorta and the first generation of bifurcations are reproduced with relative root-mean-square errors smaller than 3%.

关键词： Pulse wave propagation one-dimensional modelling lumped parameter outflow models time-domain coupling arterial compliance peripheral compliance peripheral resistance multiscale modelling.

Surgical techniques for the management of male infertility

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Asian journal of Andrology 2012年第1期14卷 94-102,177页

作者： natalya A Lopushnyan Thomas j Walsh Department of Urology University of Washington Seattle WA 98195 USA

Evaluation and surgical treatment of male infertility has evolved and expanded, now leading to more precise diagnoses and tailored treatments with diminished morbidity and greater success. Surgeries for male infertility are divided into four major categories：（i） diagnostic surgery; （ii） surgery to improve sperm production; （iii） surgery to improve sperm delivery; and （iv） surgery to retrieve sperm for use with in vitrofertilization and intracytoplasmic sperm injection （ivF-ICSI）. While today we are more successful than ever in treating male infertility, pregnancy is still not always achieved likely due to factors that remain poorly understood. Clinicians treating infertility should advocate for couple-based therapy, and require that both partners have a thorough evaluation and an informed discussion before undergoing specific surgical therapies.

关键词： male infertility testis varicocele

新发晚期卵巢癌患者使用拓扑替康/卡铂后使用紫杉醇/卡铂治疗的Ⅱ期研究

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世界核心医学期刊文摘（妇产科学分册） 2005年第1期1卷 60-61页

作者： Gordon A.n. Asmar L. Messing M.j. 张剑萍 Texas Oncology P.A. Ch arlesA. Sammons Cancer C. DallasTX United States

Objective. Incorporating topotecan into standard platinum/taxane chem otherapy for advanced ovarian cancer has been complicated by myelosuppression. This study evaluated sequential doublets of topotecan and carboplatin, followed by paclita xel and carboplatin, in newly diagnosed advanced ovarian cancer patients. Method s. Forty-five patients (median age, 56 years; range, 38-77 years) with stage I II/iv disease and GOG performance status nrolled and received four cyc les of topotecan (1.0 mg/m2/day on days 1 to 3) and carboplatin (AUC 4 on day 1) , followed by four cycles of paclitaxel (175 mg/m2 via 3-h iv infusion on day 1 ) and carboplatin (AUC 5 on day 1). All cycles were 21 days. Antitumor response was assessed after four and eight cycles; patients with clinical complete respon se (CR) underwent second-look laparotomy for determination of pathologic CR (PC R). Dose reductions were instituted for grade 4 neutropenia and thrombocytopenia , and for grade 3/4 nonhematologic toxicity. Results. Among 41 CA-125 evaluable patients, complete and partial responses were observed in 29 (70.7%) and 11 (26.8%) patients, r espectively. Of the 12 clinical CRs (43%) in 28 evaluable patients, 10 patients underwent second-look laparotomy, with 3 PCRs (30%). Median time to progressi on was 14 months and actuarial survival was 23 months. neutropenia was the prima ry toxicity and cause of dose adjustments and delays, including two deaths. Conc lusion. The antitumor activity observed is comparable with other series, althoug h neutropenic complications were increased. Progression-free and actuarial surv ivals were slightly inferior. A Phase Ⅲtrial (GOG182) of sequential doublets in the reverse sequence is ongoing.

关键词：晚期卵巢癌拓扑替康标准化疗方案抗肿瘤效应非血液系统毒性行为状况紫杉烷类肿瘤进展剖腹探查术完全缓解率

胎盘附着处滋养细胞肿瘤:55例病例分析及针对影响预后因素的文献回顾

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世界核心医学期刊文摘（妇产科学分册） 2006年第6期2卷 53-54页

作者： Baergen R.n. Rutgers j.L. Young R.H. 吕涛 new York Presbyterian Hospital Weill Cornell Medical Center 520 East 70th Street Starr 1002 New York NY 10021 United States

Objective. The placental site trophoblastic tumor is a rare form of gestational trophoblastic disease. Fifteen percent of reported cases have been fatal, but predicting behavior in individual patients has been challenging. Methods. The clinical, gross and histopathological features of 55 cases and 180 cases in the literature were analyzed for their effect on survival and in relation to tumor stage. Results. The 55 patients in our series were 20 to 62 (average 32) years of age. The tumors occurred on an average of 34 months after the last known gestation. 84% were stage I, 2% stage II, 5% stage III, and 9% stage iv. Serum levels of human chorionic gonadotropin (hCG)were elevated (average 691 mIU/ml) in 77% of the cases. The tumors were on average 5 cm in greatest dimension and were composed microscopically of infiltrative sheets of intermediate (extravillous) trophoblastic cells. The mitotic rate ranged from 0 to 20 (average 5.0) per 10 high power fields. The follow- up interval averaged 4.6 years. Eight patients (15% ) died from metastatic tumor, and nine additional patients had metastases or a recurrence but were alive at last contact. The most common metastatic sites were the lungs, liver, and vagina. Conclusions. Significant factors associated with adverse survival in the present series were age over 35 years (P = 0.025), interval since the last pregnancy of over 2 years (P = 0.014), deep myometrial invasion (P = 0.006), stage III or iv (P 1000 mIU/ml (P = 0.034), extensive coagulative necrosis (P = 0.024), high mitotic rate (P = 0.005), and the presence of cells with clear cytoplasm (P nly stage and clear cytoplasm were independent predictors of overall survival, while stage and age were the only independent predictors of time to recurrence or disease- free survival. In the literature, factors associated with survival were stage (P nterval from preceding pregnancy of over 2 years (P = 0.029), previous term pr

关键词：滋养细胞肿瘤病例分析预后因素胎盘附着文献回顾人绒毛促性腺激素滋养细胞疾病平均年龄组织病理学临床表现