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On Proper and Exact Relative Homological Dimensions

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Algebra Colloquium 2020年第3期27卷 621-642页

作者： Driss Bennis j.R.garcia Rozas Lixin Mao Luis Oyonarte CeReMAR Center Faculty of Sciences B.P.1014 Mohammed V University in RabatRabatMorocco Dcpartamento de Matematicas Universidad de AlmeriaAlmena 04071Spain Department of Mathematics and Physics Nanjing Institute of Technology Nanjing 211167China Departamento de Matematicas Universidad de AlmenaAlmena 04071Spain

In Enochs'relative homological dimension theory occur the(co)resolvent and(co)proper dimensions,which are defined by proper and coproper resolutions constructed by precovers and preenvelopes,***,some authors have been interested in relative homological dimensions defined by just exact *** this paper,we contribute to the investigation of these relative homological *** we study the relation between these two kinds of relative homological dimensions and establish some transfer results under adjoint *** relative global dimensions are studied,which lead to nice characterizations of some properties of particular cases of self-orthogonal *** the end of this paper,relative derived functors are studied and generalizations of some known results of balance for relative homology are established.

关键词： self-orthogonal subcategory resolvent dimension exact dimension relative homological dimension relative group(co)homology balanced pair

Usefulness of serum C-reactive protein and calprotectin for the early detection of colorectal anastomotic leakage:A prospective observational study

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World journal of Gastroenterology 2022年第24期28卷 2758-2774页

作者： Nuno j G Rama Marlene C C Lages Maria pedro S Guarino Óscar Lourenço Patrícia C Motta Lima Diana Parente Cândida S G Silva Ricardo Castro Ana Bento Anabela Rocha Fernando Castro-Pocas joão Pimente Colorectal Surgical Division Leiria Hospital CentreLeiria 2410-021Portugal Abel Salazar Biomedical Institute(ICBAS) University of OportoOporto 4099-002Portugal Center for Innovative Care and Health Technology(ciTechCare) Polytechnic of LeiriaLeiria 2410-541Portugal Faculty of Economics CeBERUniversity of CoimbraCoimbra 3000-137Portugal Clinical Pathology Division Leiria Hospital CentreLeiria 2410-541Portugal Surgical Division Oporto Hospital CentreOporto 4099-001Portugal Department of Gastroenterology Santo António HospitalPorto Hospital CenterPorto 4099-001Portugal Institute of Biomedical Sciences Abel Salazar University of PortoPorto 4099-001Portugal Faculty of Medicine University of CoimbraCoimbra 3004-531Portugal Surgical Division Montes Claros HospitalCoimbra 3030-320Portugal

BACKGROUND Colorectal anastomotic leakage(CAL)is one of the most dreaded complications after colorectal surgery,with an incidence that can be as high as 27%.This event is associated with increased morbidity and mortality;therefore,its early diagnosis is crucial to reduce clinical consequences and *** biomarkers have been suggested as laboratory tools for the diagnosis of *** To assess the usefulness of plasma C-reactive protein(CRP)and calprotectin(CLP)as early predictors of *** A prospective monocentric observational study was conducted including patients who underwent colorectal resection with anastomosis,from March 2017 to August *** were divided into three groups:G1–no complications;G2–complications not related to CAL;and G3–*** biomarkers were measured and analyzed in the first 5 postoperative days(PODs),namely white blood cell(WBC)count,eosinophil cell count(ECC),CRP,CLP,and procalcitonin(PCT).Clinical criteria,such as abdominal pain and clinical condition,were also *** correlation between biomarkers and CAL was *** operating characteristic(ROC)curve analysis was used to compare the accuracy of these biomarkers as predictors of CAL,and the area under the ROC curve(AUROC),specificity,sensitivity,positive predictive value,and negative predictive value(NPV)during this period were *** In total,25 of 396 patients developed CAL(6.3%),and the mean time for this diagnosis was 9.0±6.8 *** operative characteristics,such as surgical approach,blood loss,intraoperative complications,and duration of the procedure,were notably related to the development of *** length of hospital stay was markedly higher in the group that developed CAL compared with the group with complications other than CAL and the group with no complications(median of 21 d vs 13 d and 7 d respectively;P<0.001).For abdominal pain,the best predictive performance was on POD4 and POD5,with the largest AUROC of 0.84 on ***

关键词： Anastomotic leakage Colorectal Surgery Biomarkers C-reactive protein Calprotectin

Intercropping effect on root growth and nitrogen uptake at different nitrogen levels

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journal of Plant Ecology 2015年第4期8卷 380-389页

作者： javier Ramirez-garcia Helle j.Martens Miguel Quemada Kristian Thorup-Kristensen Dpto.Producción Vegetal:Fitotecnia ETSI AgrónomosAvd.Complutense s/nUniversidad Politécnica de Madrid28040 MadridSpain Department of Plant and Environmental Sciences University of CopenhagenHøjbakkegaards Alle 13DK-2630TaastrupDenmark

Aims Intercropping legumes and non-legumes may affect the root growth of both components in the mixture,and the non-legume is known to be strongly favored by increasing nitrogen(N)*** knowledge of how root systems affect the growth of the individual species is useful for understanding the interactions in intercrops as well as for planning cover cropping *** aim of this work was(i)to determine if different levels of N in the topsoil influence root depth(rD)and intensity of barley and vetch as sole crops or as an inter-cropped mixture and(ii)to test if the choice of a mixture or the N availability in the topsoil will influence the N uptake by deep *** In this study,we combined rhizotron studies with root extraction and species identification by microscopy with studies of growth,N uptake and 15N uptake from deeper soil layers,for studying the root interactions of root growth and N foraging for barley(Hordeum vul-gare l.)and vetch(Vicia sativa l.),frequently grown in mixtures as cover crops.N was added at 0(N0),50(N1)and 150(N2)kg N ha−*** roots discrimination relying on the anatomical and morphologi-cal differences observed between dicots and monocots proved to be a reliable method providing valuable data for the *** Findingsthe intercrop and the barley attained slightly higher root intensity(rI)and rD than the vetch,with values around 150 crosses m−1 and 1.4 m,respectively,compared to 50 crosses m−1 and 0.9 m for the *** deep soil layers,intercropping showed slightly larger rI values compared to the sole-cropped *** barley and the intercropping had larger root length density(r D)values(200-600 m m−3)than the vetch(25-130)at 0.8-1.2 m *** topsoil N supply did not show a clear effect on the rI,rD or r D;however,increasing topsoil N favored the proliferation of vetch roots in the intercropping at deep soil layers,with the barley:vetch root ratio ranging from 25 at N0 to 5 at *** N uptake of the barley was

关键词： grasses legumes cover crops crop mixture root discrimination labeled N

PED Flex with Shield Technology:a feasible alternative for fusiform MCA aneurysms

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Stroke & Vascular Neurology 2018年第3期3卷 185-188页

作者： Guilherme j.Agnoletto pedro Aguilar-Salinas Roberta Santos Eric Sauvageau Ricardo A.Hanel Lyerly Neurosurgery Baptist Neurological InstituteJacksonvilleFLUSA

BACKGROUND The advent of flow diverters(FDs)has changed the scope of endovascular treatment options for intracranial aneurysms(IAs).FDs can effectively treat complex aneurysms in which both microsurgical and conventional endovascular options are less than ideal.12 The Pipeline Flex Embolization Device(PED;Medtronic,Irvine,California,USA)has been available in the USA for several years demon-strating positive *** recently,the PED Flex with enhanced delivery features has been introduced,and although decreased,thromboembolic complications are still a potential risk.3 In light of this,a new surface modification was applied to the PED Flex known as Shield Technology consisting of a phosphorylcholine layer covalently bound to its metal braids potentially reducing its thrombogenicity.4 Herein,we report our initial experience using the PED Flex with Shield Technology in the treatment of an unruptured fusiform aneurysm located in the middle cerebral artery(MCA)using dual-an-tiplatelet therapy.

关键词： Flex PED MCA treatment

Hydroxychloride trace minerals have a positive effect on growth performance,carcass quality and impact ileal and cecal microbiota in broiler chickens

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journal of Animal Science and Biotechnology 2021年第3期12卷 1112-1124页

作者： Sandra j.A.van Kuijk Yanming Han Ana Isabel garcia-Ruiz Ana Rodiles Trouw Nutrition R&D P.O.Box 2993800AGAmersfoortthe Netherlands Trouw Nutrition R&D 45950 Casarrubios del MonteToledoSpain.

Background:The objective was to study the effect of hydroxychloride trace minerals(HTM)on growth performance,carcass quality and gut microbiota of broiler chickens in comparison to sulphate trace minerals(STM).In total 1440 male Ross 308 day-old chicks were divided into 12 replicate pens with 30 birds each per *** different treatments were tested according to a 2×2 factorial study design,where the animals received a three phase diet containing either inorganic Zn from sulphates or Zn from HTM in high(80 mg/kg Zn)or low Zn dosage(20 mg/kg Zn).In all treatments 15 mg/kg Cu was added from the same mineral source as the *** weight and feed intake were measured on day 0,10,27 and 34,while carcass and breast meat yields were measured at the end of the study(day 34).In addition,high-throughput sequencing analysis was performed in digesta samples from ileum and cecum to study the gut microbiome(day 34).Results:The results showed an improved(P<0.05)body weight of broiler chickens fed HTM,regardless of Zn level,on day 27,while on day 34 this effect remained as a tendency(P=0.0542).In the overall study period,birds fed HTM had a higher(P<0.05)average daily gain and average daily feed intake when compared to birds fed *** mineral source did not affect the carcass characteristics,however,feeding 80 mg/kg Zn resulted in a significantly higher(P=0.0171)breast meat yield,regardless of ***-throughput sequencing analysis of the microbiota revealed a higher microbial diversity in the ileum and cecum of HTM fed birds compared to STM fed *** differences were mainly found in the cecum,specifically between the group fed high and low Zn levels from *** correlated with the mineral contents observed in the cecal *** both groups fed 80 mg/kg Zn,the HTM group had more Streptococcaceae,Streptococcus,Clostridia,Weissella and Leuconostocaceae compared to the STM ***:HTM improved growth performance of broiler chickens;and th

关键词： Broiler chickens Growth performance Gut microbiota Hydroxychloride trace minerals

Thermal manipulation of plasmons in atomically thin films

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Light(Science & Applications) 2020年第1期9卷 1179-1189页

作者： Eduardo j.C.Dias Renwen Yu F.javier garcia de Abajo ICFO-Institut de Ciencies Fotoniques The Barcelona Institute of Science and Technology08860 Castelldefels(Barcelona)Spain ICREA-Institucio Catalana de Recerca i Estudis Avançats Passeig Lluis Companys 2308010 BarcelonaSpain

Nanoscale photothermal effects enable important applications in cancer therapy,imaging and *** effects also induce substantial changes in the optical response experienced by the probing light,thus suggesting their application in all-optical ***,we demonstrate the ability of graphene,thin metal films,and graphene/metal hybrid systems to undergo photothermal optical modulation with depths as large as>70%over a wide spectral range extending from the visible to the terahertz frequency *** envision the use of ultrafast pump laser pulses to raise the electron temperature of graphene during a picosecond timescale in which its mid-infrared plasmon resonances undergo dramatic shifts and broadenings,while visible and near-infrared plasmons in the neighboring metal films are severely attenuated by the presence of hot graphene *** study opens a promising avenue toward the active photothermal manipulation of the optical response in atomically thin materials with potential applications in ultrafast light modulation.

关键词： pump visible films

Liver bioengineering:Current status and future perspectives

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World journal of Gastroenterology 2012年第47期18卷 6926-6934页

作者： Christopher Booth Tom Soker pedro Baptista Christina L Ross Shay Soker Umar Farooq Robert j Stratta Giuseppe Orlando Wake Forest Institute for Regenerative Medicine Wake Forest University School of MedicineWinston-SalemNC 27101United States Department of General Surgery Section of TransplantationWake Forest University School of MedicineWinston-SalemNC 27101United States

The present review aims to illustrate the strategies that are being implemented to regenerate or bioengineer livers for clinical *** are two general pathways to liver bioengineering and *** first consists of creating a supporting scaffold,either synthetically or by decellularization of human or animal organs,and seeding cells on the scaffold,where they will mature either in bioreactors or in *** strategy seems to offer the quickest route to clinical translation,as demonstrated by the development of liver organoids from rodent livers which were repopulated with organ specific cells of animal and/or human *** bioengineering has potential for transplantation and for toxicity testing during preclinical drug *** second possibility is to induce liver regeneration of dead or resected tissue by manipulating cell *** fact,it is well known that the liver has peculiar regenerative potential which allows hepatocyte hyperplasia after amputation of liver *** of autologous bone marrow cells,which aids in liver regeneration,into patients was shown to be safe and to improve their clinical condition,but the specific cells responsible for liver regeneration have not yet been determined and the underlying mechanisms remain largely unknown.A complete understanding of the cell pathways and dynamics and of the functioning of liver stem cell niche is necessary for the clinical translation of regenerative medicine *** well,it will be crucial to elucidate the mechanisms through which cells interact with the extracellular matrix,and how this latter supports and drives cell fate.

关键词： Liver Regenerative medicine Tissue engineering Extracellular matrix Scaffold Stem cells

Fine-scale habitat differentiation shapes the composition, structure and aboveground biomass but not species richness of a tropical Atlantic forest

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journal of Forestry Research 2020年第5期31卷 1599-1611页

作者： Alice Cristina Rodrigues pedro Manuel Villa Arshad Ali Walnir Ferreira-junior Andreza Viana Neri Laboratorio de Ecologia e Evoluc¸ao de Plantas–LEEP Departamento de Biologia VegetalUniversidade Federal de Vic¸osaVic¸osaMinas Gerais CEP 36570-900Brazil Fundacion para la Conservacion de la Biodiversidad Merida 7101MeridaVenezuela College of Forestry Nanjing Forestry UniversityNanjing 210037JiangsuPeople’s Republic of China Setor de Biologia e Meio Ambiente Instituto Federal do Sul de Minas Gerais-IFSULDEMINAS-Campus MachadoHighway Machado-Paraguac¸ukm 3MachadoMG CEP 37750000Brazil

Evaluating the influences of fine-scale habitat heterogeneity on the composition,diversity,structure and functioning of forests is critical to understand how tropical forests will respond to climate change and devise forest management strategies that will enhance biodiversity conservation and aboveground biomass ***,we hypothesized that topographic and soil factors determine fine-scale habitat differentiation,which in turn shape community composition,species richness,structure and aboveground biomass at the local scale in tropical *** test this hypothesis,we selected two areas(each 100×100 m)with contrasting fine-scale topographic conditions where all trees,palms and lianas with a diameter at breast height ≥ 10 cm were tagged and identified to *** each selected area,100 subplots of 10×10 m were *** mainly found that higher topographic variability caused higher habitat differentiation with changes in species composition and community structure,but did not change species *** habitat-scale analyses indicated that,in the less heterogeneous area,the distribution of species was more uniform along a fine-scale topographical gradient with no variation in convexity,which induced changes in structure and aboveground biomass,but not in species *** nonsignificant relationship between species richness and aboveground biomass may be attributable to species redundancy or functional *** study suggests that environmental filtering is a fundamental process for shaping community assembly and forest functioning along a local topographical gradient in tropical forests.

关键词： Community–habitat associations Convexity Rarefaction Topographic variability

Molecular aspects of mammalian fertilization

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Asian journal of Andrology 2001年第4期3卷 243-249页

作者： Hector Serrano Dolores garcia-Suarez Dept. Health Sciences Dept. Biology Universidad Autonoma Metropoliana-Iztapalapa Ave. Michoacan and Purisima Mexico City DF 09340 Mexico

Mammalian fertilization is a highly regulated process, much of which are not clearly understood. Here we presentsome information in order to elaborate a working hypothesis for this process, beginning with the sperm modifications inthe epidydimis up to sperm and egg plasmalemma interaction and fusion. We also discuss the still poorly understood ca-pacitation process, the phenomenon of sperm chemo-attraction that brings the capacitated sperm to interact with theoocyte vestments and certain aspects of the acrosome reaction. (Asian j Androl 2001 Dec; 3 : 243 - 249)

关键词： fertilization sperm maturation sperm capacitation sperm-ovum interactions membrane fusion