检索结果-南通市图书馆

Population genomic analysis reveals key genetic variations and the driving force for embryonic callus induction capability in maize

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第7期23卷 2178-2195页

作者： Peng liu langlang Ma siyi Jian Yao He Guangsheng Yuan Fei Ge Zhong Chen Chaoying Zou Guangtang Pan Thomas lübberstedt Yaou shen state Key laboratory of Crop Gene Exploration and Utilization in southwest China/Maize Research Institute Sichuan Agricultural UniversityChengdu 611130China Department of Agronomy Iowa State UniversityAmesIA 50011USA

Genetic transformation has been an effective technology for improving the agronomic traits of ***,it is highly reliant on the use of embryonic callus(EC)and shows a serious genotype *** this study,we performed genomic sequencing for 80 core maize germplasms and constructed a high-density genomic variation map using our newly developed pipeline(MQ2Gpipe).Based on the induction rate of EC(REC),these inbred lines were categorized into three *** low-REC germplasms displayed more abundant genetic diversity than the high-REC *** integrating a genome-wide selective signature screen and region-based association analysis,we revealed 95.23 Mb of selective regions and 43 REC-associated *** variants had phenotypic variance explained values ranging between 21.46 and 49.46%.In total,103 candidate genes were identified within the linkage disequilibrium regions of these REC-associated *** genes mainly participate in regulation of the cell cycle,regulation of cytokinesis,and other functions,among which MYB15 and EMB2745 were located within the previously reported QTl for EC *** leaf area-associated variants with large effects were closely linked to several REC-related loci,implying a potential synergistic selection of REC and leaf size during modern maize breeding.

关键词： maize genetic transformation embryonic callus selective signal association analysis

Unifying concepts in methanogenic,aerobic,and anammox sludge granulation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Environmental science and Ecotechnology 2024年第1期17卷 17-30页

作者： simon Mills Anna Christine Trego Marco Prevedello Jo De Vrieze Vincent O’Flaherty Piet N.l.lens Gavin Collins Microbial Communities laboratory School of Biological and Chemical SciencesNational University of Ireland GalwayUniversity RoadGalwayH91 TK33Ireland Microbial Ecology laboratory school of Biological and Chemical sciences University of GalwayUniversity RoadGalwayH91 TK33Ireland Center for Microbial Ecology and Technology(CMET) Ghent UniversityCoupure Links 653B-9000GentBelgium University of Galway University RoadGalwayH91 TK33Ireland

The retention of dense and well-functioning microbial biomass is crucial for effective pollutant removal in several biological wastewater treatment *** solids retention is often achieved through aggregation of microbial communities into dense,spherical aggregates known as granules,which were initially discovered in the *** granules have since been widely applied in upflow anaerobic digesters for waste-to-energy ***,granular biomass has been applied in aerobic wastewater treatment and anaerobic ammonium oxidation(anammox)*** mechanisms underpinning the formation of methanogenic,aerobic,and anammox granules are the subject of ongoing *** each granule type has been extensively studied in isolation,there has been a lack of comparative studies among these granulation *** is likely that there are some unifying concepts that are shared by all three sludge *** these unifying concepts could allow a unified theory of granulation to be ***,we review the granulation mechanisms of methanogenic,aerobic,and anammox granular sludge,highlighting several common concepts,such as the role of extracellular polymeric substances,cations,and operational parameters like upflow velocity and shear *** have then identified some unique features of each granule type,such as different internal structures,microbial compositions,and quorum sensing ***,we propose that future research should prioritize aspects of microbial ecology,such as community assembly or interspecies interactions in individual granules during their formation and growth.

关键词： Granule Granulation Anaerobic digestion Anammox Aerobic granule

Autoantibodies against beta cells to predict early insulin requirements in pediatric patients with clinically diagnosed type 2 diabetes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第8期15卷 1717-1725页

作者： Jorge M Molina Patricia G Medina Rita A Gomez Julia R Herrera Nancy l Martínez Brenda Hernández Yesenia García Department of Endocrinology Children’s Hospital Federico GomezMexico 06720Mexico National Medical Center"siglo XXI" UMAE Hosp EspecialidadesUnidad Invest Med Epidemiol ClinMexican Social Security InstituteMexico 06720Mexico Research Division UMAE Hospital de EspecialidadesCentro Médico Nacional Siglo XXIMexican Institute of Social SecurityMexico 06720Mexico Epidemiology Research Unit in Endocrinology and Nutrition Federico Gómez Children’s HospitalMexico 06720Mexico Department of Endocrinology Comprehensive Health Unit for Trans PersonsMexico 11340Mexico

BACKGROUND Autoimmunity has emerged as a probable disease modifier in patients with clinically diagnosed type 2 diabetes mellitus(T2DM),that is,patients who have insulin resistance,obesity,and other cardiovascular risk factors,suggesting that the presence of glutamic acid decarboxylase(anti-GAD65),islet antigen 2(anti-ia2),and zinc transporter 8(anti-Zn8T)antibodies could have deleterious effects on beta cell function,causing failure and earlier requirement for insulin *** To evaluate anti-GAD65,anti-ia2 and anti-Zn8T as predictors of early insulin requirement in adolescents with a clinical diagnosis of *** This was a case–control study in patients with clinically diagnosed with T2DM(68 cases and 64 controls with and without early insulin dependence respectively),male and female,aged 12–18 ***,blood pressure,glucose,insulin,C-peptide,glycated hemoglobin A1c,and lipid profiles were *** was used to measure anti-GAD65,anti-ia2,and anti-Zn8T *** statistics,Pearson'sχ2 test,student's t test,and logistic regression was performed.Ps considered statistically *** There were 132 patients(53.8%female),with a mean age was 15.9±1.3 years,and there was a disease evolution time of 4.49±0.88 *** presence of anti-GAD65,anti-ia2,and anti-Zn8T positivity was found in 29.5%,18.2%,and 15.9%,*** the groups by early or no insulin dependence showed that the group with insulin had a higher frequency of antibody positivity:anti-GAD65 odds ratio(OR):2.42(1.112–5.303,P=0.026);anti-ia2:OR:1.55(0.859–2.818,P=0.105);and anti-Zn8T:OR:7.32(2.039–26.279,P=0.002).CONClUsION Anti-GAD65 positivity was high in our ***-GAD65 and anti-Zn8T positivity showed a significantly depleted beta cell reserve phenotype,leading to an increased risk of early insulin dependence.

关键词： Diabetes Obesity Adolescents Autoimmunity Beta cell Insulin requirements

Fragipan Horizon Changes Using Annual Ryegrass and Other Admendments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of soil science 2024年第6期14卷 388-397页

作者： lloyd Murdock Anastasios Karathanasis Dottie Call Dana l. Dinnes Amitava Chatterjee Department of Plant & soil science University of Kentucky Lexington KY USA UsDA-ARs National Laboratory for Agriculture and the Environment University Bldg Ames IA USA

A greenhouse experiment was conducted involving intact fragipan soil cores of 50 cm thickness after removing the topsoil horizons. The cores were maintained in moist condition throughout the experiment and received several treatments with various amendments for different periods ranging from 9 to 17 months. The amendments included annual ryegrass or Festulolium residues, powder limestone and various humate compounds alone or in combination with the grass residues. The results suggested a significant effect of ryegrass and Festulolium in reducing penetration resistance into the top 10 cm of the fragipan within 9 - 17 months, particularly when used in combination with certain humate materials such as leonardite. Apparently, this is the result of the release of certain soluble organic compounds from the plant residues or the humate amendments that increase the solubility of si and Al associated with the fragipan brittleness, thus decreasing the density of the compacted fragipan material.

关键词： Fragipan Fragipan Horizon Fragipan soils Changing the Fragipan Annual Ryegrass Changes Fragipan Festulolium Changes Fragipan Amendments That Change the Fragipan

Two-dimensional atomically thin Pt layers on MXenes: The role of electronic effects during catalytic dehydrogenation of ethane and propane

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第3期17卷 1251-1258页

作者： Zhe li Tobias K.Misicko Fan Yang Xiaopeng liu Zhenwei Wu Xiaoyang Gao Tao Ma Jeffrey T.Miller Daniela s.Mainardi Collin D.Wick Zhenhua Zeng Yang Xiao Yue Wu Department of Chemical and Biological Engineering Iowa State University618 Bissell RoadAmesIA 50011USA Institute for Micromanufacturing Louisiana Tech University505 Tech DriveRustonLA 71272USA Davidson school of Chemical Engineering Purdue University480 Stadium Mall DriveWest LafayetteIN 47907USA Michigan Center for Materials Characterization University of Michigan2800 Plymouth RdAnn Arbor MI 48109USA College of Engineering and science Louisiana Tech UniversityRustonLA 71272USA

Atomically thin Pt nanolayers were synthesized on the surface of Mo2TiC2 MXenes and used for the catalytic dehydrogenation of ethane and propane into ethylene and propylene,two important chemicals for the petrochemical *** compared with Pt nanoparticles,the atomically thin Pt nanolayer catalyst showed superior coke-resistance(no deactivation for 24 h),high activity(turnover frequencies(TOFs)of 0.4–1.2 s^(-1)),and selectivity(>95%)toward ethylene and *** unique Pt nanolayer has a similar geometric surface to Pt nanoparticles,enabling the investigations of the electronic effect on the catalytic performance,where the geometric effect is *** is found that the electronic effect plays a critical role in dehydrogenative product selectivity and catalyst *** metal–support interaction is found dependent on the substrate and metal components,providing wide opportunities to explore high-performance MXene-supported metallic catalysts.

关键词： MXene catalysis alkane dehydrogenation nanolayers

Pediatric burn resuscitation:past, present, and future

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Burns & Trauma 2017年第3期5卷 164-172页

作者： Kathleen s. Romanowski Tina l. Palmieri Department of surgery University of Iowa Hospitals and Clinics 200 Hawkins Drive JCP 1500 Iowa City IA 52242 USA shriners Hospitals for Children Northern California Sacramento California USA University of California Davis Davis California USA

Burn injury is a leading cause of unintentional death and injury in children, with the majority being minor (less than 10%). However, a significant number of children sustain burns greater than 15%total body surface area (TBsA), leading to the initiation of the systemic inflammatory response syndrome. These patients require IV fluid resuscitation to prevent burn shock and death. Prompt resuscitation is critical in pediatric patients due to their small circulating blood volumes. Delays in resuscitation can result in increased complications and increased mortality. The basic principles of resuscitation are the same in adults and children, with several key differences. The unique physiologic needs of children must be adequately addressed during resuscitation to optimize outcomes. In this review, we will discuss the history of fluid resuscitation, current resuscitation practices, and future directions of resuscitation for the pediatric burn population.

关键词： Burns Resuscitation Pediatric

Bioactive steroid from the Root Bark of Psorospermum corymbiferum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国天然药物 2011年第4期9卷 264-266页

作者： Zubair MF Oladosu ia Olawore NO Usman lA Fakunle CO Hamid AA Ali Ms Department of Chemistry University of llorinNigeria Department of Chemistry University of IbadanNigeria Department of Chemistry Ladoke Akintola University of TechnologyOgbomoso Department of Chemistry Bowen UniversityIwoNigeria International Centre for Chemical and Biological studies(ICCBs) Pakistan

AIM:To isolate,characterize and investigate the antifungal activity of the root bark of Psorospermum corymbiferum(Clusiaceae).METHODs:The finely ground root bark of Psorospermum corymbiferum was cold-extracted by percolation with 98% ethanol(5.0 l) for two *** ethanol extract was macerated with n-hexane,chloroform,ethylacetate and methanol successively to give the respective solvent *** of the extract was done using column chromatography on silica gel with cyclohexene:ethylacetate(1:1) as eluents,and the subfractions were purified by TlC using cyclohexane:ethylacetate(7:3).The structures were elucidated based on spectral analysis(IR,1H NMR and 13C NMR) in comparison with the data with those reported in the *** minimum inhibitory concentration(MIC) was determined on Candida alblican and Candida ***:Three known compounds,acetylvismione F,prenylated bianthrone and 1,8-dihydroxyanthraquinone and a steroid were isolated from the *** determined on Candida alblican and *** were 20 and 15 μ***-1,*** steroidal compound(diosgenin) was characterized for the first time from Psorospermum corymbiferum(Clusiaceae).CONClUsION:The results suggested that the isolation has anticandidal properties,supporting the use of this plant in folk *** current drug of choice for disseminated Candidiasis is amphotericin B with MIC of 0.39 μ***-1,which could be a promising lead for a new antifungal drug especially if subjected to sAR in antifungal drug design.

关键词：生物活性化合物胆汁酸化学分析

Evaluation of the Biotechnological Potential of Isolated Bacteria of the soil in the Degradation of Residues of skin swine

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances in Microbiology 2014年第9期4卷 493-497页

作者： Andréia Dalla Rosa Nelson G. Golynski Mário l. Teixeira Curso de Medicina Veterinaria Instituto Federal Catarinense—Campus Concordia Concordia Brazil

The degradation of industrial residues is of great importance for the maintenance of the environment. Therefore, the objective of this study is to verify the proteases production for bacteria of the gender isolated Bacillus of soil. The samples of skin residue were collected in industries of the area west of santa Catarina, using residue of skin rude swine and residue of skin processed swine. The verification of the biotechnological potential consisted of the use of these residues in middle of culture and inoculation of the respective species of bacteria. The results were more expressive in the samples of skin processed swine, where it showed a degradation average around 43.55% (p/p). While, in the samples of residue of skin rude swine, an average of degradation of 20.60% (p/p) happened. In this way, the residue of skin processed swine is more sensitive than the catalytic activity of the bacterial enzymes.

关键词： Bacteria Bacillus skin swine Degradation Bioremediation

干旱区土壤石膏聚积层的宏、微形态类型(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

干旱区研究 2010年第1期27卷 44-50页

作者： ia雅姆诺娃 Dl戈罗瓦诺夫杜库恰耶夫土壤科学研究所莫斯科州立大学地理学院

在分析详细土壤调查资料的基础上,制作了Dzhizak试验站区各种土壤的石膏含量和石膏土壤形貌的形态分布图。石膏层宏、微形态描述使区分这些石膏层的三种不同形态类型成为可能。并对石膏层的形态参数进行了分类,采用GIs技术制做了这些形... 详细信息

在分析详细土壤调查资料的基础上,制作了Dzhizak试验站区各种土壤的石膏含量和石膏土壤形貌的形态分布图。石膏层宏、微形态描述使区分这些石膏层的三种不同形态类型成为可能。并对石膏层的形态参数进行了分类,采用GIs技术制做了这些形态参数的分布图。空间分布显示,石膏层不同形态类型与土壤发生类型、其在景观中的位置、地下水位以及土壤水分情势有明显的相关性。因此,建议在土壤系统分类高等级上,俄罗斯土壤的新实质发生分类中应考虑不同石膏层的出现。

关键词：石膏层泥灰质石膏粉状石膏结壳状石膏结核状石膏