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500kV变压器套管的在线监测与现场高压介损测量研究

Gaoya dianqi, 2015
500 kV变压器是变电站的核心元件,套管对主变的稳定运行有着重要的作用,根据公司关于500 kV高压交流套管反事故措施的要求,基于套管在线监测系统对主变变高、变中套管的运行情况进行实时监测,发现500 kV 1号主变变高侧B相套管介损值增长明显,增长幅度较大,电容值变化无异常。为验证在线监测数据的准确性,针对10 kV常规介损测试难以真实反映套管真实运行状况的情况,采用变频原理的串联谐振升压方式对主变套管进行高压介损测试,发现B相变高套管介损值随电压升高,介损值上升趋势明显,在某个区间有突变情况 ...
董玉玺, 解德英, 曾力, 谢兵平
doaj  

低照度岩心荧光图像拼接技术

四川大学学报. 自然科学版, 2008
针对低照度岩心荧光图像拼接问题,通过相位相关法,利用频域中的相位信息来实现图像的拼接.对有位移、旋转、缩放,以及光照变化的图像用对数极坐标相位相关法进行图像配准.实验表明该方法能够有效地克服图像间光照变化和CCD镜头造成的几何畸变对拼接的影响,是一种有效的岩心荧光图像拼接方法.
姜元山, 吴晓红, 滕奇志, 王正勇   +3 more
doaj  

[Associations of subjective perceptions and income change with transitions in usual source of care among Chinese residents: A study based on China Family Panel Studies]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Xu C, Jian W.
europepmc   +1 more source

[Advances in the molecular genetics of nuclear gene mutations causing pediatric mitochondrial cardiomyopathy]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wang ZW, Wang YQ, Wang CL.
europepmc   +1 more source

[Analysis and management of the influence of periapical lesion size on endodontic microsurgery]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Huang X, Zeng K, Yang R, Wei X.
europepmc   +1 more source

[Association between heparin-binding protein and other clinical indicators with the microscopic severity of <i>Mycoplasma pneumoniae</i> pneumonia]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Li YR, Zhang CL, Wu Y, Liu R, Meng LJ.
europepmc   +1 more source

[Dynamic changes in regional cerebral oxygen saturation variability within the first week after birth and relationship with brain injury type in preterm infants]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wang X, Chu JB, Lu M, Ji YP, Guo CX.
europepmc   +1 more source

[Molecular characteristics for poor prognosis related renal cell carcinoma with lymph metastases]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Shu F, Ge L, Deng H, Yin H, Ou J, Deng S, Hao Y, Lu M, Zhang Z, Duan P, Zhang S.   +10 more
europepmc   +1 more source

[Radiological characteristics and associated factors of single-level cervical disc herniation combining with focal ossification of posterior longitudinal ligament]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ye Y, Zhang M, Ren M, Xu C, Zhou P, Zhang C.   +5 more
europepmc   +1 more source

[Advances in research on neuroelectrophysiological characteristics of post-stroke cognitive impairment based on quantitative electroencephalography and acupuncture interventions]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Feng Y, Su K, Ren Q, Pan R, Wang C, Zhang X, Li Q, Wang Y, Zhang M.   +8 more
europepmc   +1 more source