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Poly(lactic acid)-starch/Expandable Graphite (PLA-starch/EG) Flame Retardant Composites

Journal of Renewable Materials 2018年第1期6卷 26-37页

作者： Mfiso Emmanuel Mngomezulu Adriaan Stephanus Luyt Steve Anthony Chapple maya jacob john Department of Chemistry University of the Free State(Qwaqwa Campus)Private Bag X13Phuthaditjhaba 9866South Africa Center for Advanced Materials Qatar UniversityPO Box 2713DohaQatar CSIR Materials Science and Manufacturing Polymers and Composites Competence AreaPO Box 1124Port Elizabeth 6000South Africa Department of Chemistry Faculty of ScienceNelson Mandela Metropolitan UniversityPO Box 1600Port Elizabeth 6000South Africa

This work reports on the effect of commercial expandable graphite(EG)on the flammability and thermal decomposition properties of PLA-starch *** PLA-starch/EG composites were prepared by melt-mixing and their thermal stability,volatile pyrolysis products and flammability characteristics were *** char residues of the composites,after combustion in a cone calorimeter,were analyzed with environmental scanning electron microscopy(ESEM).The thermal decomposition stability of the composites improved in the presence of ***,the char content was less than expected as per the combination of the wt%EG added into PLA-starch and the%residue of *** flammability performance of the PLA-starch/EG composites improved,especially at 15 wt%EG content,due to a thick and strong worm-like char *** peak heat release rate(PHRR)improved by 74%,the total smoke production(TSP)by 40%and the specific extinction area(SEA)by 55%.The improvements are attributed to the ability of EG to exfoliate at increased temperatures during which time three effects occurred:(i)cooling due to an endothermic exfoliation process,(ii)dilution due to release of H2O,SO2 and CO2 gases,and (iii)formation of a protective intumescent char ***,the CO and CO2 yields were found to be unfavorably high due to the presence of EG.

关键词： Poly(lactic acid)-starch composites expandable graphite thermal stability flammability properties

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On Some L-extensions of Dimensions of Topological Spaces

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模糊系统与数学 2009年第3期23卷 82-89页

作者： Sunil jacob john Department of Mathematics National Institute of Technology Calicut

The concepts of covering dimension,small inductive dimension and large inductive dimension for topological spaces are extended to L-topological spaces using the quasi-coincidence *** getting some characterizations,it ... 详细信息

关键词：模糊数学理论发展模糊集

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Determining the role for uric acid in non-alcoholic steatohepatitis development and the utility of urate metabolites in diagnosis:An opinion review

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World Journal of Gastroenterology 2020年第15期26卷 1683-1690页

作者： Paul Brennan Kathleen Clare jacob George john F Dillon Department of Molecular and Clinical Medicine University of DundeeNinewells Hospital and Medical SchoolDundee DD19SYUnited Kingdom Department of Neurology Queen Elizabeth HospitalGlasgow G514TFUnited Kingdom

There has long been a recognised association between non-alcoholic fatty liver disease(NAFLD)and the composite aspects of the metabolic *** of this association highlighted the supposed co-existence of elevated uric acid levels in those with *** is interest in exploitation of this as a putative diagnostic and prognostic biomarker in *** the increased economic and health burden associated with the NAFLD epidemic,improved methods of population-based,minimally-invasive methods and biomarkers are clearly highly sought and *** this opinion review we review the proposed role of uric acid in the pathogenesis of NAFLD and its potential utilisation in the diagnosis and monitoring of the disease process.

关键词： Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Uric acid Urate Non-invasive fibrosis markers Fatty liver index

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Polar Gini Curve:A Technique to Discover Gene Expression Spatial Patterns from Single-cell RNA-seq Data

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Genomics, Proteomics & Bioinformatics 2021年第3期19卷 493-503页

作者： Thanh Minh Nguyen jacob john Jeevan Nuo Xu Jake Y.Chen Informatics Institute the University of Alabama at BirminghamBirminghamAL 35294USA Collat School of Business the University of Alabama at BirminghamBirminghamAL 35294USA

In this work,we describe the development of Polar Gini Curve,a method for characterizing cluster markers by analyzing single-cell RNA sequencing(scRNA-seq)*** Gini Curve combines the gene expression and the 2D coordinates(“spatial”)information to detect patterns of uniformity in any clustered cells from scRNA-seq *** demonstrate that Polar Gini Curve can help users characterize the shape and density distribution of cells in a particular cluster,which can be generated during routine scRNA-seq data *** quantify the extent to which a gene is uniformly distributed in a cell cluster space,we combine two polar Gini curves(PGCs)—one drawn upon the cell-points expressing the gene(the“foreground curve”)and the other drawn upon all cell-points in the cluster(the“background curve”).We show that genes with highly dissimilar foreground and background curves tend not to uniformly distributed in the cell cluster—thus having spatially divergent gene expression patterns within the *** with similar foreground and background curves tend to uniformly distributed in the cell cluster—thus having uniform gene expression patterns within the *** quantitative attributes of PGCs can be applied to sensitively discover biomarkers across clusters from scRNA-seq *** demonstrate the performance of the Polar Gini Curve framework in several simulation case *** this framework to analyze a real-world neonatal mouse heart cell dataset,the detected biomarkers may characterize novel subtypes of cardiac muscle *** source code and data for Polar Gini Curve could be found at http://***/PGC/or https://***/projects/Polar_Gini_Curve/76749.

关键词： Single-cell gene expression Polar Gini curve Spatial pattern Biomarker discovery

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Effects of vertical position on trematode parasitism in larval anurans

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Current Zoology 2019年第6期65卷 657-664页

作者： jacob R.JONES Camille L.STEENROD john A.MARINO Jr. Biology Department Bradley UniversityPeoriaILUSA Department of Geography University of MarylandCollege ParkMDUSA

Spatial distributions of animals can affect interactions with their natural enemies,such as parasites,and thus have important implications for host-parasite *** spatial variation in infection risk has been explored in many systems at the landscape scale,less attention has been paid to spatial structure at smaller ***,we explore a hypothesized relationship between a common spatial variable,vertical position,and risk of parasite infection in a model aquatic system,larval frogs(Rana)and trematode(Digenea)*** position is relevant to this system given evidence that the densities of snail first intermediate hosts,tadpole second intermediate hosts,and trematode infective stages can vary with *** test the effects of depth on infection risk of larval frogs by trematodes,we performed two enclosure experiments,one in the laboratory and one in the field,in which larval frogs in cages just below the water surface or near the bottom of the water column were exposed to *** with near-surface cages,mean infection load(number of cysts)in tadpoles in near-bottom cages was 83%higher after 48-h exposures in the laboratory and 730%higher after 10-day exposures in the *** findings thus indicate that infection risk depends on depth,which may have adaptive significance,as tadpoles have previously been shown to change vertical position in response to parasite *** results motivate future work examining vertical variation in infection risk and may have broader implications for host-parasite dynamics and evolution of host and parasite behavior.

关键词： avoidance behavior cercariae Echinostomatidae host-parasite interactions Rana spatial structure

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Factors associated with increased incidence of severe toxicities following yttrium-90 resin microspheres in the treatment of hepatic malignancies

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World Journal of Gastroenterology 2016年第10期22卷 3006-3014页

作者： john D Roberson II Andrew M Mc Donald Craig J Baden Chee Paul Lin Rojymon jacob Omer L Burnett III School of Medicine University of Alabama at Birmingham Birmingham AL 35294-3412 United States Department of Radiation Oncology University of Alabama at Birmingham Birmingham AL 35233 United States Center for Clinical and Translational Science University of Alabama at Birmingham Birmingham AL 35205 United States

AIM: To further define variables associated with increased incidences of severe toxicities following administration of yttrium-90 (90Y) ***: Fifty-eight patients undergoing 79 treatments were retrospectively assessed for development of clinical and laboratory toxicity incidence following 90Y administration. Severe toxicity events were defined using Common Terminology Criteria for Adverse Events version 4.03 and defined as grade ≥ 3. Univariate logistic regression analyses were used to evaluate the effect of different factors on the incidence of severe toxicity events. Multicollinearity was assessed for all factors with P 90Y microsphere therapy.

关键词： Yttrium-90 microspheres Liver metastases Multivariate analysis Toxicity incidence Colorectal adenocarcinoma

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Local color and morphological image feature based vegetation identification and its application to human environment street view vegetation mapping, or how green is our county?

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Geo-Spatial Information Science 2020年第3期23卷 222-236,I0003页

作者： Istvan G.Lauko Adam Honts jacob Beihoff Scott Rupprecht Department of Mathematical Sciences University of Wisconsin-MilwaukeeMilwaukeeWIUSA Lubar School of Business University of Wisconsin-MilwaukeeMilwaukeeWIUSA Scott Rupprecht Limited Liability Company MilwaukeeWIUSA

Measuring the amount of vegetation in a given area on a large scale has long been accomplished using satellite and aerial imaging *** methods have been very reliable in measuring vegetation coverage accurately at the top of the canopy,but their capabilities are limited when it comes to identifying green vegetation located beneath the canopy *** the amount of urban and suburban vegetation along a street network that is partially beneath the canopy has recently been introduced with the use of Google Street View(GSV)images,made accessible by the Google Street View Image *** green vegetation through the use of GSV images can provide a comprehensive representation of the amount of green vegetation found within geographical regions of higher population density,and it facilitates an analysis performed at the *** this paper we propose a fine-tuned color based image filtering and segmentation technique and we use it to define and map an urban green environment *** deployed this image processing method and,using GSV images as a high-resolution GIS data source,we computed and mapped the green index of Milwaukee County,a 3,082 km^(2) urban/suburban county in *** approach generates a high-resolution street-level vegetation estimate that may prove valuable in urban planning and management,as well as for researchers investigating the correlation between environmental factors and human health outcomes.

关键词： Urban environment mapping greenview index panoramic street view urban landscape urban planning

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Integrative behavioral ecotoxicology： bringing together fields to establish new insight to behavioral ecology, toxicology, and conservation

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Current Zoology 2017年第2期63卷 185-194页

作者： Elizabeth K. PETERSON David B. BUCHWALTER jacob L. KERBY Matthew K. LEFAUVE Claire W. VARIAN-RAMOS john R SWADDLE Department of Biological Sciences State University of New York-Albany Albany NY 12222 USA Department of Biological Sciences North Carolina State University Raleigh NC 27695 USA Department of Biology University of South Dakota Vermillion SD 57069 USA Department of Biological Sciences George Washington University Washington DC 20052 USA Department of Biology Colorado State University-Pueblo Pueblo CO 81001 USA Biology Department Institute for Integrative Bird Behavior Studies College of William & Mary Williamsburg VA 23187-8795 USA

The fields of behavioral ecology, conservation science, and environmental toxicology individually aim to protect and manage the conservation of wildlife in response to anthropogenic stressors, including widespread anthropogenic pollution. Although great emphasis in the field of toxicology has been placed on understanding how single pollutants affect survival, a comprehensive, interdis- ciplinary approach that includes behavioral ecology is essential to address how anthropogenic compounds are a risk for the survival of species and populations in an increasingly polluted world. We provide an integrative framework for behavioral ecotoxicology using Tinbergen＇s four postu- lates （causation and mechanism, development and ontogeny, function and fitness, and evolution- ary history and phylogenetic patterns）. The aims of this review are： 1） to promote an integrative view and re-define the field of integrative behavioral ecotoxicology; 2） to demonstrate how study- ing ecotoxicology can promote behavior research; and 3） to identify areas of behavioral ecotoxicol- ogy that require further attention to promote the integration and growth of the field.

关键词： animal behavior behavioral ecology conservation phylogenetic pollution toxicology.

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Functional and clinical outcome with modified lateral approach total hip arthroplasty in stiff hips with ankylosing spondylitis

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World Journal of Orthopedics 2022年第8期13卷 714-724页

作者： Mathew Kiran jacob Pavan Kumar Reddy Roncy Savio Kuruvilla Chandy Viruthapadavil john Pradeep Mathew Poonnoose Anil Thomas Oommen Unit 2 Department of OrthopaedicsChristian Medical College HospitalVellore 632004India

BACKGROUND Ankylosing spondylitis at total hip arthroplasty(THA)has significant hip stiffness with flexion deformity,restricted mobility,and *** of movement(ROM)improvement with good functional outcome is seen following THA in these *** modified Hardinge approach without abductor compromise is helpful in these stiff hips with associated flexion *** To assess improvement in ROM and functional outcomes with a modified lateral approach THA in ankylosing spondylitis with stiff *** A total of 69 hips that underwent THA with a modified Hardinge approach in 40 patients were evaluated at a mean follow-up of 38.33 *** individuals ambulated with weight-bearing as tolerated and ROM exercises from the 1st postoperative *** Harris hip score and ROM were assessed during *** of life assessments using the 36-item and 12-item short form health surveys were done along with clinical and functional outcomes at *** 22.0 was used for statistical *** correlation of ROM and functional score change was performed using Pearson’s correlation *** Sixty-nine hips with a significant decrease in ROM preoperatively with 32 clinically fused hips showed significant improvement in flexion *** mean flexion in 69 hips improved from 29.35±31.38 degrees to 102.17±10.48 *** mean difference of 72.82 with a P value<0.0001 was *** total,45 out of 69 hips had flexion deformity,with 13 hips having a deformity above 30 *** flexion during the follow-up was below 90 degrees in 3 *** hips had flexion of 90 degrees at follow-up,while the remaining 55 hips had flexion above 100 *** Harris hip score improved from 17.03±6.02 to 90.66±7.23(P value<0.0001).The 36-item short form health survey at the follow-up indicated health status in 40 patients as excellent in 11,very good in 20,good in 5,fair in 3,and poor in *** mean mental health score was 84.10±*** relief w

关键词： Ankylosing Spondylitis Stiff flexion deformity Harris hip score Hip range of movement 36-item short form health survey score Total hip arthroplasty modified Hardinge approach

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Electrochemical Synthesis of Novel Zn-Doped TiO_2 Nanotube/ZnO Nanoflake Heterostructure with Enhanced DSSC Efficiency

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Nano-Micro Letters 2016年第4期8卷 381-387页

作者： Aijo john K johns Naduvath Sudhanshu Mallick jacob W.Pledger S.K.Remillard P.A.De Young Manju Thankamoniamma T.Shripathi Rachel Reena Philip Department of Physics Union Christian College Department of Metallurgical Engineering and Material Science Indian Institute of Technology Present Address Department of Physics St.Thomas College Department of Physics Hope College Department of Physics Sree Sankara College UGC-DAE Consortium for Scientific Research Indore

The paper reports the fabrication of Zn-doped TiO_2 nanotubes(Zn-TONT)/ZnO nanoflakes heterostructure for the first time,which shows improved performance as a photoanode in dye-sensitized solar cell(DSSC).The layered structure of this novel nanoporous structure has been analyzed unambiguously by Rutherford backscattering spectroscopy,scanning electron microscopy,and X-ray *** cell using the heterostructure as photoanode manifests an enhancement of about an order in the magnitude of the short circuit current and a seven-fold increase in efficiency,over pure TiO_2 *** further reveal that the Zn-TONT is preferentially oriented in [001] direction and there is a Ti metal-depleted interface layer which leads to better band alignment in DSSC.

关键词： Zn-doped TiO2 nanotubes ZnO nanoflakes Heterostructures DSSC

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