60 research outputs found

    Optimization of Deep Convolutional Neural Network with the Integrated Batch Normalization and Global pooling

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    Deep convolutional neural networks (DCNN) have made significant progress in a wide range of applications in recent years, which include image identification, audio recognition, and translation of machine information. These tasks assist machine intelligence in a variety of ways. However, because of the large number of parameters, float manipulations and conversion of machine terminal remains difficult. To handle this issue, optimization of convolution in the DCNN is initiated that adjusts the characteristics of the neural network, and the loss of information is minimized with enriched performance. Minimization of convolution function addresses the optimization issues. Initially, batch normalization is completed, and instead of lowering neighborhood values, a full feature map is minimized to a single value using the global pooling approach. Traditional convolution is split into depth and pointwise to decrease the model size and calculations. The optimized convolution-based DCNN's performance is evaluated with the assistance of accuracy and occurrence of error. The optimized DCNN is compared with the existing state-of-the-art techniques, and the optimized DCNN outperforms the existing technique

    Association Rule Mining using Path Systems in Directed Graphs

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    A transaction database (TDB) consists of a set II of items and a multiset D\mathcal{D} of nonempty subsets of I,I, whose elements are called transactions. There are several algorithms for solving the popular and computationally expensive task of association rule mining from a TDB. In this paper we propose a data structure which consists of a directed graph DD (loops and multiple arcs are permitted) and a system of directed paths in DD to represent a TDB. We give efficient algorithms for generating the data structure, for extracting frequent patterns and  for association rule mining.  We also propose several graph theoretic parameters which lead to a better understanding of the system

    Transvaginal Ultrasonographic Findings of Infertile Females in Population of Lahore

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    Failure of conception in women after frequent unprotected intercourse for one year is known as infertility. Ultrasound examination can detect certain pathologies that may result in primary or secondary infertility. Objective: To describe the various transvaginal ultrasonographic findings of infertile females in population of Lahore. Methods: The study was started after the consent of ethical committee of the University of Lahore. All the patients were registered in this study after signing the informed consent form. Toshiba Xario with transvaginal transducer frequency ranging from 9-12 MHz was used. Pathologies were evaluated through transvaginal scanning and sonographic data was kept in the ultrasound machine. A consecutive sampling technique was used and data was further evaluated with the help of Statistical Package for the Social Sciences version 24. Results: Among 138 females, PCOS was seen in 40.6% of the subjects. The second most common pathology was ovarian cyst which was seen in 10.9% of subjects. And the incidence of multiple fibroids was 5.1% as third most common pathology in both primary and secondary infertility cases. Most ovarian pathologies were found to be bilateral. 12.3% subjects had no findings on ultrasound. Conclusion: PCOS was the utmost common pathology connected with primary and secondary infertility. The second and third most common pathologies were ovarian cyst and multiple fibroids respectively. Keywords: female infertility, PCOS, PID DOI: 10.7176/JBAH/10-12-05 Publication date:June 30th 202

    Stable Patterns of Gene Expression Regulating Carbohydrate Metabolism Determined by Geographic Ancestry

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    Background: Individuals of African descent in the United States suffer disproportionately from diseases with a metabolic etiology (obesity, metabolic syndrome, and diabetes), and from the pathological consequences of these disorders (hypertension and cardiovascular disease). Methodology/Principal Findings: Using a combination of genetic/genomic and bioinformatics approaches, we identified a large number of genes that were both differentially expressed between American subjects self-identified to be of either African or European ancestry and that also contained single nucleotide polymorphisms that distinguish distantly related ancestral populations. Several of these genes control the metabolism of simple carbohydrates and are direct targets for the SREBP1, a metabolic transcription factor also differentially expressed between our study populations. Conclusions/Significance: These data support the concept of stable patterns of gene transcription unique to a geographic ancestral lineage. Differences in expression of several carbohydrate metabolism genes suggest both genetic and transcriptional mechanisms contribute to these patterns and may play a role in exacerbating the disproportionate levels o

    ASSESSING PHYSICAL ACTIVITY AMONG HISPANICS

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    Title: ASSESSING PHYSICAL ACTIVITY AMONG HISPANICS Authors: Charles S. Layne, PhD1,2, Sabeen A. Ali,1, Maria I. Anez, 2, Daniel P. O’Connor, PhD1,2, Rebecca E. Lee, PhD1,2 Affiliations: 1Department of Health and Human Performance, University of Houston, 2Texas Obesity Research Center Purpose: The lack of regular physical activity is a contributing factor in the world wide obesity epidemic. However, scientists are challenged to find methods by which to accurately assess physical activity performed by individuals who are either obese or at risk of becoming obese. The purpose of this effort is to provide a comprehensive review of the literature that involved the assessment of physical activity among Mexicans and Hispanic Americans. Method: English and Spanish language peer reviewed scientific article databases were searched to identify articles that included the terms ‘physical activity’ and ‘Hispanic’ or ‘Mexican’. The time period was limited to 2000 to the present. The original 1120 articles that were identified where triaged in to three categories: 1) Relevant, 2) Possibly Relevant and 3) Not Relevant. The review process consisted of identifying the characteristics of the sampled population, how physical activity was assessed, and whether the assessment of the physical activity was part of a survey project or accompanied a physical activity intervention program. This presentation presents the review of the ‘Relevant’ articles. Results: Currently, 113 articles have been reviewed of which eight were originally in Spanish prior to translation. Physical activity was assessed by a self-report survey in 81% of the articles. The survey’s ranged from validated surveys commonly accepted in the literature (ex. International Physical Activity Questionnaire (IPAQ), to open ended questions regarding the amount and type of physical activity the participants engaged in. In general, the surveys were either translated into Spanish or modified to ask more culturally relevant questions. Approximately 30% of the articles included a form of continuously monitored physical activity over a designated time period with the use of either an accelerometer or pedometer. Eighty three% of the articles included the assessment of physical activity as part of a survey project. Conclusions: Although there have been a number of studies that have assessed physical activity among Hispanics, the vast majority of these have used self-report surveys, many of which were not validated. Additionally, there remains a paucity of physical activity assessment projects completed within Mexico. Keywords: physical activity, Hispanic, accelerometer, review, survey Learning Objective 1: After reviewing the presentation, the learner will be able to identify how physical activity is assessed among Hispanics. Learning Objective 2: After reviewing the presentation, the learner will be able to identify several commonly used surveys designed to assess physical activity

    Structure and Stability of the Spinach Aquaporin SoPIP2;1 in Detergent Micelles and Lipid Membranes

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    Background: SoPIP2;1 constitutes one of the major integral proteins in spinach leaf plasma membranes and belongs to the aquaporin family. SoPIP2;1 is a highly permeable and selective water channel that has been successfully overexpressed and purified with high yields. In order to optimize reconstitution of the purified protein into biomimetic systems, we have here for the first time characterized the structural stability of SoPIP2;1. Methodology/Principal Finding: We have characterized the protein structural stability after purification and after reconstitution into detergent micelles and proteoliposomes using circular dichroism and fluorescence spectroscopy techniques. The structure of SoPIP2;1 was analyzed either with the protein solubilized with octyl-beta-D-glucopyranoside (OG) or reconstituted into lipid membranes formed by E. coli lipids, diphytanoylphosphatidylcholine (DPhPC), or reconstituted into lipid membranes formed from mixtures of 1-palmitoyl-2-oleoyl-phosphatidylcholine (POPE), 1-palmitoyl-2-oleoyl-phosphatidylethanolamine (POPE), 1-palmitoyl-2-oleoyl-phosphatidylserine (POPS), and ergosterol. Generally, SoPIP2;1 secondary structure was found to be predominantly a-helical in accordance with crystallographic data. The protein has a high thermal structural stability in detergent solutions, with an irreversible thermal unfolding occurring at a melting temperature of 58 degrees C. Incorporation of the protein into lipid membranes increases the structural stability as evidenced by an increased melting temperature of up to 70 degrees C. Conclusion/Significance: The results of this study provide insights into SoPIP2;1 stability in various host membranes and suggest suitable choices of detergent and lipid composition for reconstitution of SoPIP2;1 into biomimetic membranes for biotechnological applications

    Tobacco use induces anti-apoptotic, proliferative patterns of gene expression in circulating leukocytes of Caucasian males

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    Abstract Background Strong epidemiologic evidence correlates tobacco use with a variety of serious adverse health effects, but the biological mechanisms that produce these effects remain elusive. Results We analyzed gene transcription data to identify expression spectra related to tobacco use in circulating leukocytes of 67 Caucasian male subjects. Levels of cotinine, a nicotine metabolite, were used as a surrogate marker for tobacco exposure. Significance Analysis of Microarray and Gene Set Analysis identified 109 genes in 16 gene sets whose transcription levels were differentially regulated by nicotine exposure. We subsequently analyzed this gene set by hyperclustering, a technique that allows the data to be clustered by both expression ratio and gene annotation (e.g. Gene Ontologies). Conclusion Our results demonstrate that tobacco use affects transcription of groups of genes that are involved in proliferation and apoptosis in circulating leukocytes. These transcriptional effects include a repertoire of transcriptional changes likely to increase the incidence of neoplasia through an altered expression of genes associated with transcription and signaling, interferon responses and repression of apoptotic pathways

    Familial hypercholesterolaemia in children and adolescents from 48 countries: a cross-sectional study

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    Background: Approximately 450 000 children are born with familial hypercholesterolaemia worldwide every year, yet only 2·1% of adults with familial hypercholesterolaemia were diagnosed before age 18 years via current diagnostic approaches, which are derived from observations in adults. We aimed to characterise children and adolescents with heterozygous familial hypercholesterolaemia (HeFH) and understand current approaches to the identification and management of familial hypercholesterolaemia to inform future public health strategies. Methods: For this cross-sectional study, we assessed children and adolescents younger than 18 years with a clinical or genetic diagnosis of HeFH at the time of entry into the Familial Hypercholesterolaemia Studies Collaboration (FHSC) registry between Oct 1, 2015, and Jan 31, 2021. Data in the registry were collected from 55 regional or national registries in 48 countries. Diagnoses relying on self-reported history of familial hypercholesterolaemia and suspected secondary hypercholesterolaemia were excluded from the registry; people with untreated LDL cholesterol (LDL-C) of at least 13·0 mmol/L were excluded from this study. Data were assessed overall and by WHO region, World Bank country income status, age, diagnostic criteria, and index-case status. The main outcome of this study was to assess current identification and management of children and adolescents with familial hypercholesterolaemia. Findings: Of 63 093 individuals in the FHSC registry, 11 848 (18·8%) were children or adolescents younger than 18 years with HeFH and were included in this study; 5756 (50·2%) of 11 476 included individuals were female and 5720 (49·8%) were male. Sex data were missing for 372 (3·1%) of 11 848 individuals. Median age at registry entry was 9·6 years (IQR 5·8-13·2). 10 099 (89·9%) of 11 235 included individuals had a final genetically confirmed diagnosis of familial hypercholesterolaemia and 1136 (10·1%) had a clinical diagnosis. Genetically confirmed diagnosis data or clinical diagnosis data were missing for 613 (5·2%) of 11 848 individuals. Genetic diagnosis was more common in children and adolescents from high-income countries (9427 [92·4%] of 10 202) than in children and adolescents from non-high-income countries (199 [48·0%] of 415). 3414 (31·6%) of 10 804 children or adolescents were index cases. Familial-hypercholesterolaemia-related physical signs, cardiovascular risk factors, and cardiovascular disease were uncommon, but were more common in non-high-income countries. 7557 (72·4%) of 10 428 included children or adolescents were not taking lipid-lowering medication (LLM) and had a median LDL-C of 5·00 mmol/L (IQR 4·05-6·08). Compared with genetic diagnosis, the use of unadapted clinical criteria intended for use in adults and reliant on more extreme phenotypes could result in 50-75% of children and adolescents with familial hypercholesterolaemia not being identified. Interpretation: Clinical characteristics observed in adults with familial hypercholesterolaemia are uncommon in children and adolescents with familial hypercholesterolaemia, hence detection in this age group relies on measurement of LDL-C and genetic confirmation. Where genetic testing is unavailable, increased availability and use of LDL-C measurements in the first few years of life could help reduce the current gap between prevalence and detection, enabling increased use of combination LLM to reach recommended LDL-C targets early in life
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