scholarly journals Application of Current Image-Enhanced Endoscopy in Gastric Diseases

2021 ◽  
Author(s):  
Wansik Lee
Keyword(s):  
Gastric Diseases ◽  
Current Image

Application of AFP Nanoprobing Light-Induced Photovoltaic Current in the Failure Analysis

2017 ◽  
Author(s):  
C.Q. Chen ◽  
P.T. Ng ◽  
G.B. Ang ◽  
Francis Rivai ◽  
S.L. Ting ◽  
...  
Keyword(s):  
Image Analysis ◽  
Failure Analysis ◽  
Photovoltaic Effect ◽  
Electrical Characterization ◽  
Fault Isolation ◽  
Device Performance ◽  
Semiconductor Technology ◽  
Current Image ◽  
Scaling Down ◽  
Detailed Circuit

Abstract As semiconductor technology keeps scaling down, failure analysis and device characterizations become more and more challenging. Global fault isolation without detailed circuit information comprises the majority of foundry EFA cases. Certain suspected areas can be isolated, but further narrow-down of transistor and device performance is very important with regards to process monitoring and failure analysis. A nanoprobing methodology is widely applied in advanced failure analysis, especially during device level electrical characterization. It is useful to verify device performance and to prove the problematic structure electrically. But sometimes the EFA spot coverage is too big to do nanoprobing analysis. Then further narrow-down is quite critical to identify the suspected structure before nanoprobing is employed. That means there is a gap between global fault isolation and localized device analysis. Under these kinds of situation, PVC and AFP current image are offen options to identify the suspected structure, but they still have their limitation for many soft defect or marginal fails. As in this case, PVC and AFP current image failed to identify the defect in the spot range. To overcome the shortage of PVC and AFP current image analysis, laser was innovatively applied in our current image analysis in this paper. As is known to all, proper wavelength laser can induce the photovoltaic effect in the device. The photovoltaic effect induced photo current can bring with it some information of the device. If this kind of information was properly interpreted, it can give us some clue of the device performance.

Analysis of babA, cagE and cagA Genes in Helicobacter pylori from Upper Gastric Patients in the North of Iran

2019 ◽  
Vol 19 (3) ◽  
pp. 274-278 ◽  
Author(s):  
Saba Fakhrieh Asl ◽  
Mehrnaz Pourvahedi ◽  
Ali Mojtahedi ◽  
Mohammad Shenagari
Keyword(s):  
Helicobacter Pylori ◽  
Gastric Diseases ◽  
Specific Primers ◽  
The North ◽  
Different Types ◽  
North Of Iran ◽  
Gastric Biopsies ◽  
Pcr Method ◽  
Non Ulcer Dyspepsia ◽  
H Pylori

Objective:Helicobacter pylori is a Gram-negative bacterium which has a serious effect on up to half of the world’s population and has been related to different gastric diseases. The goal of this study was to assess the frequency of babA, cagE and cagA genotypes among H. pylori strains isolated from gastric biopsies of endoscopic patients in the north of Iran.Methods:The present study was performed on 90 strains of H. pylori isolated from patients with gastric diseases (Gastric ulcer (GU), Duodenal ulcer (DU), Gastritis (G), Non-ulcer dyspepsia (NUD) and Gastric adenocarcinoma (GC)). DNA was extracted from all isolated strains and PCR method was performed to detect the prevalence of babA2, cagE and cagA genes using specific primers.Results:Among 90 samples of H. pylori, babA2, cagE, and cagA genes were detected in 42.2%, 30% and 82.2% of strains respectively. The statistical analysis showed that the prevalence of cagA gene in GU, G, DU, and NUD was significantly higher than other genes. Moreover, cagA, and babA2 genes were significantly more prevalent in GC patients compared to cagE gene. Our isolates exhibited 8 distinct arrangements of virulence patterns. The occurrence of cagA (35.6%) was the most prevalent pattern followed by cagA/babA2 (20%) and cagA/babA2/cagE (14.4%).Conclusion:In summary, as first report from Guilan province in the north of Iran, we showed significant association between the presence of babA2, cagE, and cagA genes in different types of gastric disorders.

Perfil Epidemiológico de Pacientes Submetidos à Biópsia Gástrica em um Hospital Escola do Sul de Minas Gerais/ Epidemiological Profile of Patients Undergo Gastric Biopsy in a School Hospital of Minas Gerais

1970 ◽  
Vol 4 (3) ◽  
pp. 48-57
Author(s):  
Isabela Maria A. Ribeiro Simões ◽  
Ana Carolina Mauad Coli ◽  
Roseane de Souza Candido Irulegui
Keyword(s):  
Helicobacter Pylori ◽  
Age Groups ◽  
Epidemiological Data ◽  
Minas Gerais ◽  
Gastric Biopsy ◽  
Gastric Ulcers ◽  
Histopathological Diagnosis ◽  
Gastric Diseases ◽  
H Pylori ◽  
Epidemiological Profile

Objetivo: Determinar a prevalência de lesões benignas e neoplasia gástrica através do estudo de biópsias realizadas em um Hospital Escola do Sul de Minas Gerais, no período entre 2007 e 2011. Materiais e Métodos: A pesquisa documental foi quantitativa e retrospectiva, baseada na análise dos registros de biópsias e prontuários. Realizou-se o levantamento de dados referentes à idade, gênero, cor, profissão, diagnóstico histopatológico e presença de Helicobacter pylori nas amostras. Resultados: O número total de biópsias gástricas analisadas foi de 1225, cujo perfil populacional encontrado foi: idade média de 56,75 anos, sexo masculino (52%), cor branca (81,9 %), aposentado (30%). Os diagnósticos mais frequentes foram: gastrites (71,9%), pólipos (14,2%), adenocarcinomas (5,9%), úlceras gástricas (6%), linfomas (0,4%), sem alterações (0,4%) e outros (1,2%). Em outros, encontram-se achados de malignidade, metaplasia e xantelasma gástrico. Em relação à presença de Helicobacter pylori nas amostras, o resultado encontrado foi de24% positivas, 46% negativas e 30% não pesquisadas. Conclusão: Os resultados confirmam a alta frequência das doenças gástricas e sua incidência nas diversas faixas etárias, além do envolvimento do H. pylori em tais afecções. É de grande importância a caracterização dos dados epidemiológicos, o que permite prováveis direcionamentos para programas de prevenção e informação para a população. Palavras-chave: biópsia gástrica, gastropatia, perfil epidemiológico.  ABSTRACTObjective: To determine the prevalence of benign lesions and gastric cancer through study of biopsies performed at a school hospital in southern Minas Gerais, in the period between 2007 and 2011.Materials and Methods: The research was quantitative and retrospective, based on analysis of biopsies records and medical records. We conducted the survey data regarding age, sex, color, profession, histopathological diagnosis and the presence of Helicobacter pylori in the samples. Results: The total number of gastric biopsies analyzed was 1225. Population listing was found: mean age of 56.75 years, male (52%), white (81.9%), retired (30%). The most frequent diagnoses were gastritis (71.9%), polyps (14.2%), adenocarcinomas (5.9%), gastric ulcers (6%), lymphoma (0.4%), unchanged (0, 4%) and others (1.2%). In others, there are: findings of malignancy, metaplasia, gastric xanthelasma. Regarding the presence of Helicobacter pylori in the sample, the result was: 24% positive, 46% negative, 30% non searched. Conclusion: The results confirm the high frequency of gastric diseases and their incidence in the various age groups additionally to the involvement of H. pylori in such conditions. It is of great importance to characterize the epidemiological data, allowing probable directions for prevention and information programs for population. Keywords: gastric biopsy, gastropathy, epidemiological profile

scholarly journals The correlation between lncRNAs and Helicobacter pylori in gastric cancer

2019 ◽  
Vol 77 (9) ◽  
Author(s):  
Narges Dastmalchi ◽  
Seyed Mahdi Banan Khojasteh ◽  
Mirsaed Miri Nargesi ◽  
Reza Safaralizadeh
Keyword(s):  
Gastric Cancer ◽  
Helicobacter Pylori ◽  
Molecular Mechanisms ◽  
Gastrointestinal Diseases ◽  
Mechanisms Of Action ◽  
Molecular Pathways ◽  
Gastric Diseases ◽  
Non Coding Rnas ◽  
H Pylori ◽  
The Relationship

ABSTRACT Helicobacter pylori infection performs a key role in gastric tumorigenesis. Long non-coding RNAs (lncRNAs) have demonstrated a great potential to be regarded as effective malignancy biomarkers for various gastrointestinal diseases including gastric cancer (GC). The present review highlights the relationship between lncRNAs and H. pylori in GC. Several studies have examined not only the involvement of lncRNAs in H. pylori-associated GC progression but also their molecular mechanisms of action. Among the pertinent studies, some have addressed the effects of H. pylori infection on modulatory networks of lncRNAs, while others have evaluated the effects of changes in the expression level of lncRNAs in H. pylori-associated gastric diseases, especially GC. The relationship between lncRNAs and H. pylori was found to be modulated by various molecular pathways.

CagE, cagA and cagA 3′ region polymorphism of Helicobacter pylori and their association with the intra-gastric diseases in Moroccan population

2021 ◽  
pp. 115372
Author(s):  
Mounia El Khadir ◽  
Samia Alaoui Boukhris ◽  
Souad Oirdi Zahir ◽  
Dafr-ALLAH. Benajah ◽  
Sidi Adil Ibrahimi ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Gastric Diseases ◽  
Moroccan Population

Photopoetics: Sisyphus Outdone, the Apostrophal Subject and the Elusive Image

2020 ◽  
Vol 4 (1) ◽  
pp. 84-95
Author(s):  
Esther Sánchez-Pardo
Keyword(s):  
Catastrophe Theory ◽  
Albert Camus ◽  
Current Image ◽  
Difficult Condition ◽  
The Subject ◽  
The Individual

AbstractIn Sisyphus Outdone (2012), Nathanaël’s particular tribute to Albert Camus’ The Myth of Sisyphus (1942), the reader faces a challenging hybrid text in which the verbal and visual dimensions intermingle to produce an idiosyncratic type of narrative. Fragmentary, elliptical, a web of quotations, dictums, and meditations on the difficult condition of the individual in the current image-saturated scenario of the first decades of the 21st century, the text manages to propose a rigorous reflection upon crucial aspects of representation from History and temporality, to the Subject now, photography, catastrophe theory, architecture, failure and translation, among the most salient. Sisyphus, I suggest, exhibits a strategic photopoetics which operates as a self-reflective mechanism contributing to the persistence of an impermanent liminal subject and to the (re)production of textuality and the proliferation of voices against silence.

scholarly journals Hybrid Image Encryption Technique Using Genetic Algorithm and Lorenz Chaotic System

2020 ◽  
Vol 32 ◽  
pp. 03009
Author(s):  
Vishwanath Chikkareddi ◽  
Anurag Ghosh ◽  
Preksha Jagtap ◽  
Sahil Joshi ◽  
Jeel Kanzaria
Keyword(s):  
Genetic Algorithm ◽  
Image Encryption ◽  
Chaotic System ◽  
Random Number ◽  
Current Image ◽  
Space Efficiency ◽  
Highly Sensitive ◽  
Key Sensitivity ◽  
Lorenz Chaotic System ◽  
Time And Space Complexity

One of the important application of image encryption is storing confidential and important images on a local device or a database in such a way that only the authorized party can view or perceive it. The current image encryption technique employs the genetic algorithm to increase confusion in the image, but compromises in time and space complexity. The other method employs chaos or pseudo random number generating systems which have fast and highly sensitive keys but fails to make the image sufficiently noisy and is risky due to its deterministic nature. We propose a technique which employs the non-deterministic, optimizing power of genetic algorithm and the space efficiency and key sensitivity of chaotic systems into a unified, efficient algorithm which will retain the merits of both the methods whereas tries to minimize their demerits in a software system. The encryption process proceeds in two steps, generating two keys. First, an encryption sequence is generated using Lorenz Chaotic system of differential equation. The seed values used are the user’s actual key having key sensitivity of 10-14. Second, the encrypted image’s genetic encryption sequence is generated which will result in an encrypted image with entropy value greater than 7.999 thus ensuring the image is very noisy. Proposed technique uses variations of Lorenz system seed sets to generate all random mutations and candidate solutions in Genetic encryption. Since only the seed sets leading to desired solution is stored, space efficiency is higher compared to storing the entire sequences. Using this image encryption technique we will ensure that the images are hidden securely under two layers of security, one chaotic and other non-deterministic.

Algorithm of Color Detection for Moving Video Objects Based on Mode Matching

2012 ◽  
Vol 239-240 ◽  
pp. 1000-1003
Author(s):  
Zhao Quan Cai ◽  
Hui Hu ◽  
Tao Xu ◽  
Wei Luo ◽  
Yi Cheng He
Keyword(s):  
Background Subtraction ◽  
Moving Objects ◽  
Color Matching ◽  
Human Beings ◽  
Current Image ◽  
Color Recognition ◽  
Recognition Ability ◽  
Color Identification ◽  
The Difference ◽  
Background Image

It is urgent to study how to effectively identify color of moving objects from the video in the information era. In this paper, we present the color identification methods for moving objects on fixed camera. One kind of the methods is background subtraction that recognizes the foreground objects by compare the difference of pixel luminance between the current image and the background image at the same coordinates. Another kind is based on the statistics of HSV color and color matching which makes the detection more similar to the color identification of the human beings. According to the experiment results, after the completion of the background modelling, our algorithm of background subtraction, statistics of the HSV color and the color matching have strong color recognition ability on the moving objects of video.

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