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Design and Development of an Electronic Sensor to Detect and Measure Curvature of Spaces Using Curvature Energy

Journal of Sensor Technology 2012年第3期2卷 116-126页

作者： Francisco Bulnes Isaías Martínez Antonio Mendoza manuel landa Department of Research in Mathematics and Engineering Technological Institute of High Studies of Chalco Chalco Mexico Headquarters of Electronic Engineering Technological Institute of High Studies of Chalco Chalco México

Using fine electromagnetic signals to measure observables of other fields like curvature and torsion of a space, and the corresponding value of their integrals of the action of perception of curvature through electronic signals that detect curvature on a curved surface, it is designed and constructed a sensor of curvature of accelerometer type that detects and curvature measures in 2 and 3-dimensional spaces using the programming of shape operators on spheres and the value of their integrals along the curves and geodesics in their principal directions.

关键词： Sensor of Curvature Curvature Detection Curvature Accelerometer Electronic Curvature Perception Sensor-Perception Curve Curvature Energy

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Design and Development of an Electronic Sensor to Detect and Measure Curvature of Spaces Using Curvature Energy

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Journal of Sensor Technology（传感技术） 2012年第3期

作者： Francisco Bulnes Isaías Martínez Antonio Mendoza manuel landa

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De-novo hepatocellular carcinoma after pediatric living donor liver transplantation

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World Journal of Hepatology 2017年第36期9卷 1361-1366页

作者： Samuel Torres-landa Armando Salim Munoz-Abraham Brett E Fortune Ananta Gurung Jeffrey Pollak Sukru H Emre manuel I Rodriguez-Davalos Michael L Schilsky Department of Gastrointestinal Surgery Hospital of the University of Pennsylvania Department of Surgery Yale University School of Medicine Division of Gastroenterology and Hepatology Weill Cornell Medicine Department of Pathology Royal Columbian Hospital Department of Radiology and Biomedical Imaging Yale University School of Medicine Division of Digestive Diseases and Transplant and Immunology Department of Medicine and Surgery Yale University School of Medicine

De-novo malignancies carry an incidence ranging between 3%-26% after transplant and account for the second highest cause of post-transplant mortality behind cardiovascular disease. While the majority of de-novo malignancies after transplant usually consist of skin cancers, there has been an increasing rate of solid tumor cancers over the last 15 years. Although, recurrence of hepatocellular carcinoma(HCC) is well understood among patients transplanted for HCC, there are increasing reports of de-novo HCC in those transplanted for a non-HCC indication. The proposed pathophysiology for these cases has been mainly connected to the presence of advanced graft fibrosis or cirrhosis and always associated with the presence of hepatitis B or C virus. We report the first known case of de-novo HCC in a recipient, 14 years after a pediatric living related donor liver transplantation for end-stage liver disease due to biliary atresia without the presence of hepatitis B or C virus before and after transplant. We present this case report to increase the awareness of this phenomenon and address on the utility for screening and surveillance of hepatocellular carcinoma among these individuals. One recommendation is to use similar guidelines for screening, diagnosis, and treatment for HCC as those used for primary HCC in the pre-transplant patient, focusing on those recipients who have advanced fibrosis in the allograft, regardless of etiology.

关键词： Liver transplantation De-novo hepatocellular carcinoma Living donor liver transplantation Biliary atresia

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病例报道:单发的婴儿期胃肠纤维平滑肌瘤

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世界核心医学期刊文摘（儿科学分册） 2006年第1期2卷 46-46页

作者： Menéndez-Arzac R. Valdez-Méndez D. landa R. 李丹平智广 Hospital General Dr manuel Gea Gonzlez C. de Tlalpan 4800. Col. T. Guerra Mex ico D.F. 14000 Mexico

We report a case of a 7-year-old child who required emergency surgery for ac ute abdomen and suspected acute appendicitis. During surgery a tumor located in the small bowel that caused intestinal occlusion was found. Histopathologic anal ysis showed a solitary gastrointestinal myofibroma. This is a very rare tumor, e specially as a single lesion, because in world literature, there are less than 1 0 cases reported.

关键词：纤维平滑肌瘤婴儿期病理学分析急性阑尾炎急诊手术

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