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模糊PID无速度传感器矢量控制系统的设计

工矿自动化 2008年第1期34卷 27-30页

作者：亢振勇周继华比马尔.k.博斯西北工业大学航海学院陕西西安710072

以异步电动机矢量控制的基本方程式为基础,构建了一个无速度传感器矢量控制系统。系统的转速推算采用模型参考自适应控制(MRAC)理论。为了提高矢量控制系统的性能,提出并设计了3个模糊PID控制器,分别控制间接矢量控制系统中的速度、转... 详细信息

以异步电动机矢量控制的基本方程式为基础,构建了一个无速度传感器矢量控制系统。系统的转速推算采用模型参考自适应控制(MRAC)理论。为了提高矢量控制系统的性能,提出并设计了3个模糊PID控制器,分别控制间接矢量控制系统中的速度、转矩和磁链。仿真结果表明基于该方法的系统能获得比较好的控制性能。

关键词：异步电动机矢量控制无速度传感器模糊PID控制转速辨识

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世界核心医学期刊文摘（妇产科学分册） 2005年第3期1卷 27-28页

作者： Watanabe M. Sueok. k. SasagawaI. 石磊

To examine whether Arg554Lys polymorphism in the gene for aryl hydrocarbon receptor (AHR) and/or Pro185Ala polymorphism in the gene for aryl hydrocarbon receptor repressor (AHRR) constitutes a susceptibility locus for dioxin related male infertility. Association study of male infertility with polymorphisms. National research institute and university hospitals. 123 Japanese men with azoospermia or severe oligozoospermia and 112 men with proven fertility. Polymorphism analysis. The allele and genotype frequencies between infertile men and controls. The allele and genotype frequencies of the AHR polymorphism were comparable between infertile men and controls. By contrast, although the difference in the allele frequency of the AHRR polymorphism did not reach a significant level, the genotype frequency was statistically significantly different between the two groups of men. Furthermore, the statistical difference became more significant when the frequency was compared between the Pro/Pro genotype and the Pro/Ala plus Ala/Ala genotype. The Pro185Ala polymorphism in AHRR may constitute a susceptibility locus for dioxin related male infertility. It appears that the negative feedback.effect of AHRR on dioxin related signaling is weak.r for the proline allele than for the alanine allele, and that the hypomorphic function of the proline allele exerts a recessive adverse effect on male fertility.

关键词：男性不育 Pro185Ala 抑制基因多态性基因型频率基因多态性分析精子缺乏易感基因座大学医院有显著性差异

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偶发轻度认知功能障碍预后与病例定义的关系

世界核心医学期刊文摘（神经病学分册） 2005年第11期1卷 44-45页

作者： Fisk.J.D. Rock.ood k. 王孝文 Capital District Health Authority 1421-5955 Veterans’Memorial Lane Halifax NS B3H 2E1 Canada

Definitions of mild cognitive impairment (MCI) vary, yielding conflicting results. For example, case definitions affect prevalence but not outcomes in prevalent cases. Our objective was to determine whether variation in case definitions affects outcomes in incident cases of MCI. The 5 year risk. of death, institutionalisation, and dementia were evaluated in clinically examined incident MCI cases in the Canadian Study of Health and Aging. The definition of MCI was varied so as to include or relax combinations of diagnostic features from consensus criteria. Relative risk. (RR) of each adverse outcome were highest in MCI case definitions that required subjective memory complaints (for example, RR of dementia=26.4-38.7). Although each MCI definition conferred an increased risk.of dementia, for each case definition 20-30%of survivors had no cognitive impairment at follow up. In this population based study, MCI represented a transitional state, but was heterogeneous, with substantial proportions recovering, regardless of how MCI was defined. Factors associated with recovery and non-progression in MCI require elucidation.

关键词：病例定义记忆障碍相对风险诊断标准诊断特征常因本项过渡状态

Geometrical Modeling of Walls of Multiwall Carbon Nanotube

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Open Journal of Composite Materials 2013年第2期3卷 10-15页

作者： k. P. S. S. Hembram k. Reddappa Reddy G. Mohan Rao Department of Instrumentation and Applied Physics Indian Institute of Science Bangalore India.

The relationship between the adjacent walls of the multiwall carbon nanotube (MWCNT) has been investigated and geometrical formulations have been derived. We have provided the relative index for each wall, owing to the diameter of the MWCNT. The index is higher for the smaller inner diameter MWCNT, and smaller for the higher inner diameter MWCNT. In the second formulation, we have put an empirical relation between the ratio of number of hexagons in the adjacent walls of two different sub-lattices. One can speculate the properties of inner walls from these relations by obtaining the accurate diameter of the concentric walls of a MWCNT.

关键词： Carbon Nanotube Concentric Walls Diameter Hexagons

多无性系种子园在橡胶生产和品种改良中的作用

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世界热带农业信息 1992年第2期 1-2页

作者： k. k. Mydin 林野

本文概述印度设置橡胶多无性系种子园的情况、入选无性系的标准、多无性种子园的设计及多无性系种子园的作用。

关键词：无性系种子园品种改良多系天然杂交橡胶生产近交衰退植胶区遗传参数异型杂交优良无性系橡胶研究所

Effect of (Ba_(0.6)Sr_(0.4))TiO_3(BST) Doping on Dielectric Properties of CaCu_3Ti_4O_(12)(CCTO)

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Journal of Materials Science & Technology 2012年第12期28卷 1137-1144页

作者： I. Norezan A.k. Yahya M.k. Talari Faculty of Applied Sciences Universiti Teknologi MARAShah Alam Selangor Malaysia

The effect of （Ba（0.6）Sr（0.4））TiO3（BST） addition on dielectric properties of CaCu3Ti4O（12）（CCTO） ceramic was investigated. Ceramic samples with the chemical formula （1-x）CaCu3Ti4O（12）＋ x（Ba（0.6）,Sr（0.4））TiO3 （x=0, 0.05, 0.1, and 0.2） were synthesized from high purity oxide powders by the conventional solid-state synthesis method. X-ray diffraction （XRD） analysis showed the existence of BST as a secondary phase alongside CCTO. Scanning electron microscopy （SEM） investigation showed a slight decrease in grain size of doped CCTO samples. Density measurements showed that porosity content increased with increasing BST addition indicating low densification due to high melting point secondary phase addition. Dielectric constant of undoped CCTO （x=0） showed lack.of stability with frequency which dropped drastically between 104 and 105Hz and accompanied by high dielectric loss. Addition of BST into CCTO caused the dielectric constant to slightly decrease but improved stability with frequency compared to the undoped sample. The decrease in dielectric constant of doped CCTO samples was suggested to be partly due to the decrease in average grain size and increase in porosity with BST addition. Nevertheless, a high value of dielectric constant was still maintained around ～104 range for all doped samples. The dielectric loss （tanδ） of all BST-doped samples was lower than that of pure CCTO sample at the frequency range of 103 to 105 Hz probably due to the increase of grains boundary resistivity. The activation energy of grains boundary （E（gb）） showed higher values as compared to the activation energy of grains （Eg ） for all samples and conforms to the internal barrier layer capacitor （IBLC） model.

关键词： CaCu3Ti4O（12）（CCTO） Dielectric properties （Ba（0.6）Sr（0.4））TiO3（BST）

巨大高度血管增生性骶尾骨畸胎瘤:1例使用Ligasure血管封堵系统将其切除的病例报道

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世界核心医学期刊文摘（儿科学分册） 2005年第5期1卷 51-52页

作者： k.neyama k. Yamatak. A. k.bayashi H. 宁亮 Dept. Pediat. Gen. Urogenital Surg. Juntendo Univ. School of Medicine Tokyo JapanDr.

Reports about giant, highly vascular sacrococcygeal teratoma (GHV-SCT) are un common. A boy with a prenatally diagnosed GHV-SCT was born at 34 week.’gestati on weighing 3, 716 g. At birth, the GHV-SCT was 20 ×17 ×14 cm. After initial devascularization using an aortic snare, excision of the GHVSCT was started usin g monopolar diathermy, but hemorrhage from cutaneous collateral vessels was diff icult to control, and individual ligation of vessels was extremely time consumin g. The authors then used the Ligasure (LS) vessel sealing system (Valleylab, Bou lder, CO) to control intraoperative hemorrhage. Hemostasis was achieved easily w ith LS, without any need for vessel ligation; the operative field was dry and the efficiency of excision enhanced. Total operating time was 255 minutes, but excision of the GHV-SCT itself took.only 16 minutes. The GHV-SCT weighed 1, 2 08 g or 325.1 g/k. body weight. Total blood loss was 77 mL or 20.7 mL/k. body weight, which was minimal compared with other cases in the literature. At the la st follow-up examination, 7 months after surgery, he remains well with no evide nce of recurrence. LS was extremely useful for controlling intraoperative hemorr hage in this case, and we strongly recommend its selective use for excising high ly vascular SCT.

关键词：畸胎瘤 Ligasure 骶尾骨增生性产前诊断手术野单极电凝切除术控制术失血量

报道的对极低出生体重活婴神经发育结局的差异

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世界核心医学期刊文摘（儿科学分册） 2005年第1期1卷 56-57页

作者： Castro L. Yolton k. Haberman B. 李丹 Cincinnati Children's Hosp.Med.C.3333 Burnet Ave CincinnatiOH 45229-3039United States

目的:调查极低出生体重(ELBW)存活婴儿(出生体重:401-1000 g)生后18-22个月时评估神经发育及身体发育中可能存在的差异。方法:将来自1483例ELBW婴儿幸存者的数据作回顾性研究。其出生于1993年2月至1994年12月,均就诊于国家儿童健康和人... 详细信息

目的:调查极低出生体重(ELBW)存活婴儿(出生体重:401-1000 g)生后18-22个月时评估神经发育及身体发育中可能存在的差异。方法:将来自1483例ELBW婴儿幸存者的数据作回顾性研究。其出生于1993年2月至1994年12月,均就诊于国家儿童健康和人类发展机构的新生儿研究网络组织中心。对尊从18-22个月追踪随访的孩子、随访但没有做评定的孩子或者没有随访的孩子进行了4个方面结局的比较:①婴儿发育的Bayley评分,第2版,智力发育指数(MDI) <70;②精神运动发育指数(PDI)<70;③缺乏或存在脑瘫;④按照年龄推算其出生体重低于第10个百分点。使用Logistic回归模型来预测这些没有跟踪评价儿童可能的结果,再将预测的分布概率用于组间的比较。结果:与失去随访的儿童相比,那些一直随访的儿童更有可能是多胎产之一。

关键词：神经发育智力发育指数婴儿发育多胎产国家儿童跟踪评价分布概率追踪随访慢性肺部疾病组织中心

Treatment Patterns and Economic Assessment of Systemic Therapy for Metastatic Colorectal Cancer

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Journal of Cancer Therapy 2016年第9期7卷 646-655页

作者： Thomas H. Cartwright Lonnie k. Wen Robyn k. Harrell Patricia S. Fox Janet L. Espirito Ed Wang The US Oncology Network McKesson Specialty Health Houston TX USA Bayer Healthcare Whippany NJ USA

Introduction: Colorectal cancer (CRC) is the third most commonly diagnosed cancer and the third leading cause of cancer deaths in the United States. The goal of this study was to understand treatment patterns, biomark.r testing practices, treatment adherence, and the clinical and economic outcomes associated with chemotherapy for metastatic disease. Methods and Materials: We retrospectively examined electronic health records of patients with metastatic CRC who initiated chemotherapy between 01 January 2007 and 30 June 2011, with follow-up to 30 June 2012. Parameters analyzed included demographics and clinical characteristics, treatment patterns, clinical outcomes, and health care resource utilization. Results: In the analysis, 756 patients were included;median age was 61 years (55% male) at start of first line therapy. The most commonly used regimens in the first, second, and third line were FOLFOX + bevacizumab (46%), FOLFIRI + bevacizumab (23%), and irinotecan + cetuximab (23%) respectively. Adherence to guidelines decreased with increasing line of therapy. When assessed by treatment back.one categories in the third line, outcome measures including overall survival (OS), and time to treatment discontinuation (TTD) were not statistically different between groups. In the multivariable model, body mass index (BMI), performance status, and k.AS were significant predictors of survival. Conclusions: This study provides insight into patterns of care and outcomes of mCRC patients for the aforementioned time period. As treatment options for mCRC evolve, it is valuable to understand the continuum of care to help inform future treatment among candidates for continued therapy.

关键词： Metastatic Colorectal Cancer Economic Assessment Systemic Therapy Treatment Patterns