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Juan Carlos Alvarez Moreno,Hisham F. Bahmad,Christopher A. Febres-Aldana,Andrés Pirela,Andres Azuero,Ali Salami,Robert Poppiti 대한병리학회 2021 Journal of Pathology and Translational Medicine Vol.55 No.6
Background: Acute kidney injury (AKI) is a common cause of morbidity and mortality. It mainly targets the renal tubular epithelium with pathological changes, referred to as acute tubular injury. The latter is followed by a regenerative response that is difficult to visualize on routine hematoxylin and eosin (H&E) stains. In this study, we examined the regenerative capacity of renal tubules by correlating vimentin (VIM) immunohistochemical (IHC) expression and pathological findings of AKI and renal tubular regeneration (RTR) on H&E.Methods: We reviewed 23 autopsies performed in the clinical setting of AKI and RTR. VIM expression was scored in the renal cortical tubular epithelium using a statistical cutoff ≥ 3% for high expression and < 3% for low expression.Results: Of the 23 kidney tissues examined, seven (30.4%) had low VIM expression, and 16 (69.6%) had high VIM expression. Kidney tissues with evidence of AKI and RTR had significantly higher VIM expression. Renal peritubular microenvironment features showing regenerative changes on H&E were associated with high VIM expression. In the univariate model, kidney tissues with RTR were 18-fold more likely to have high VIM expression.Conclusions: In conclusion, our findings suggest that VIM could serve as an IHC marker for RTR following AKI. However, correlation with H&E findings remains critical to excluding chronic tubular damage. Collectively, our preliminary results pave the way for future studies including a larger sample size to validate the use of VIM as a reliable biomarker for RTR.
Development of a Machine Vision System for Automotive Part-Car Seat Frame Inspection
Nelson S. Andres(Nelson S. Andres),장봉춘(Jang Bong-Choon) 한국자동차공학회 2005 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
Meeting the growing demand deadlines, reducing the production cost and upgrading the quality control measurements are the reasons why the automotive part manufacturers are venturing into automation. Attaining these objectives is impossible with human inspection for many reasons. Accordingly, the introduction of machine vision system purposely for car seat frame inspection is presented in this study as an alternative for human inspection. This proposal is designed to meet the demands, features and specifications of car seat frame manufacturing companies in striving for increased throughput of better quality. More specifically, this computer-based inspection proposal is designed to perform quality measures to detect holes, nuts and welding spots on every car seat fiame in real time and ensuring these portions to be intact, precise and in proper place. In this study, the NI Vision Builder software for Automatic Inspection is used as a solution in configuring the aimed quality measurements. These quality measurement techniques for visual inspection are optimized through qualitative analysis and simulation of human tolerance on inspecting car seat frames. Furthermore, this study exemplifies the incorporation of the optimized vision inspection environment to the pre-inspection and post-inspection phases using LabVIEW software.
The Practice of Sport and Physical Activity in College Students Venezolanos
( Andres De Jesus Diaz Llus ) 한국체육학회 2015 국제스포츠과학 학술대회 Vol.2015 No.1
Purpose: The purpose of this study was to examine the level of physical activity, along with sex, age, body mass index, mention of study, the sport of your choice and working hours in a group of college students. Participants were 284 students in the first semester of Education Program UNELLEZ - Barinas, 62.3% were female and 37.7% male, mean age of 20 years. Method: The instrument used to evaluate the variables was the International Physical Activity Questionnaire (IPAQ) short form. This field study, part of the quantitative paradigm, crosscutting descriptive correlational, using its own to collect socio-demographic questionnaire. The SPSS version 19 was used for data analysis (α = 5%). Result: The results show an average body mass index of 25.19. In relation to sex, 35.5% of men and 36.7% of women are overweight or obese. Even the youngest age group (17-20 years) exhibits a 21.3% overweight and 6.6% obese. In fact, contrary to what you might expect, students mention PE have a percentage in the low level of physical activity (72%) than that of the students of the other sections (52%). Moreover, the latter shown in vigorous level much higher (29%) than students in PE (8%) percentage. Meanwhile, 81.7% of students do not work and over half of those who do work less than 10 hours per week. Conclusion: This study conclude that although physical inactivity is the shortest path toward obesity, which facilitates the emergence of certain diseases generally do not perceive youth and sports physical inactivity as a risk to their health. However, and as a final conclusion, it is hoped that the knowledge gained in this research demonstrates support for developing various strategies to promote physical activity and acquiring new healthy lifestyles among university students in a stable and durable , to help improve their quality of life
Andres Artal-Tur,Vicente Pallardó-Lopez,Mona Said 한양대학교 경제연구소 2020 JOURNAL OF ECONOMIC RESEARCH Vol.25 No.1
The arrival of immigrants can help to improve the economy of host countries, for example, by creating new trade flows. In this paper, we introduce new features in the analysis of the migration-trade nexus that modulate traditional results in the literature. First, we test if historical migration corridors between countries influence the size of related trade effects. Second, we investigate the role of migrants´ profile in this process, including their level of education, language proficiency, and professional background. Third, we analyse how social integration of immigrants shape results of the model, according to their length of stay at receiving countries, their age at arrival, and their acquisition of citizenship. The research employs gravity equations with panel data, using France as an illustrative case study. Results help to provide several policy recommendations.
Regulation and Control of the Privatization of Security in Conflict Zones
Andres Macias 한국국제정치학회 2011 한국국제정치학회 기타간행물 Vol.2011 No.6
The presence of private providers of military and security services in conflict zones has increased in the aftermath of the Cold War. Although the use of Private Security Companies (PSC) and Private Military Companies (PMC) has become very popular among States, international organizations, and multinational corporations, regulation over them is scarce, insufficient, and inadequate. This paper examines the main reasons behind the tendency to rely on private security providers and the impact they have on the promotion of peace and on the safeguard of human rights in conflict areas. PSCs and PMCs carry out military training programs and in some cases bear the same duties and responsibilities as armies do, becoming also potential perpetrators of violations of human rights. Stricter control and regulation is needed in order to make their actions and omissions accountable. The privatization of security entails difficult challenges to the promotion of human rights and awareness on the implications they represent needs to be raised to national and international levels.
Andres Torres,Reinhilde Jacobs,Paul Lambrechts,Claudia Brizuela,Carolina Cabrera,Guillermo Concha,María Eugenia Pedemonte 대한영상치의학회 2015 Imaging Science in Dentistry Vol.45 No.2
Purpose: This study used cone-beam computed tomography (CBCT) to characterize mandibular molar root and canal morphology and its variability in Belgian and Chilean population samples. Materials and Methods: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile). Molars meeting the inclusion criteria were analyzed to determine (1) the number of roots; (2) the root canal configuration; (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar and (4) the presence of a C-shaped canal in the second mandibular molar. A descriptive analysis was performed. The association between national origin and the presence of a curved or C-shaped canal was evaluated using the chi-squared test. Results: The most common configurations in the mesial root of both molars were type V and type III. In the distal root, type I canal configuration was the most common. Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population. The prevalence of C-shaped canals was 10% or less in both populations. Conclusion: In cases of unclear or complex root and canal morphology in the mandibular molars, CBCT imaging might assist endodontic specialists in making an accurate diagnosis and in treatment planning.
Non-Erosive Reflux Disease Manifested Exclusively by Protracted Hiccups
( Andres De Hoyos ),( Edgar A Esparza ),( Maria Cervantes Sodi ) 대한소화관운동학회 2010 Journal of Neurogastroenterology and Motility (JNM Vol.16 No.4
Hiccups are a benign physiological feature affecting almost everyone at one time or another. They tend to be short-lived and do not affect quality of life; however, there are various pathologies that may present with long-lasting hiccups. These are grouped into 3 categories according to their duration: acute, persistent and intractable or protracted hiccups. Intractable hiccups last longer than 2 months and are usually associated with more severe conditions. The association between intractable hiccups and reflux disease has not been previously documented by objective methods. This report describes the case of a 23-year-old female who presented with protracted hiccups; all other organic pathologies were ruled out, and endoscopy and conventional pH-metry confirmed a diagnosis of non-erosive reflux disease as the unique cause. (J Neurogastroenterol Motil 2010;16:424-427)