学科分类
/ 1
11 个结果
  • 简介:Theisothermaladsorptionofdyesonavarietyofsisalbasedactivatedcarbonfibers(SACFs),andtheinfluenceofpHandtemperatureonadsorptionarediscussedinthispaper.Theresultsindicatethattheadsorptionofmethyleneblue,crystalvioletandEriochromeblueblackRonSACFsshowstypeIisothermsandcanbedescribedbytheLangmuirequationortheFreudlichequation.Theacidityofsolutionhasgreatlyinfluenceovertheadsorptionamountsofmethyleneblue,crystalvioletandEriochromeblueblackR.AspHsofthesolutionswereadjustedtoincreaseordecreasefromtheoriginalacidityofthesolution(4.7,4.1and4.0formethyleneblue,crystalvioletandEriochromeblueblackR,respectively),theamountsofdyesadsorbedonSACFsincreased.Theadsorptiontemperature(intherangeof25-50℃)exertslittleinfluenceontheadsorptionamountofmethyleneblue,crystalvioletandfluorescein.Forazodyes(EriochromeblueblackRandEriochromeblackT),however,theadsorptionamountincreasesslightlywiththeelevationoftemperature.

  • 标签: 染料吸附作用 活性碳纤维 结晶紫 亚甲蓝
  • 简介:Hidingdatainthedeoxyribosenucleicacid(DNA)canfacilitatetheauthenticationandannotationofimportantplantvarietyrights.Agrantofplantvarietyrightsforanewplantvarietygivesyoutheexclusiverighttoproduceforsaleandsellpropagatingmaterialofthevariety.Digitalwatermarkingtechniqueshavebeenproposedforawiderangeofapplications,includingownershipprotection,copycontrol,annotation,andauthentication.However,existingdatahidingmethodsforDNAchangethefunctionalitiesofDNAsequences,whichinducemorphologicalchangesinbiologicalpatterns.ThispaperproposesahighcapacitydatahidingschemeforDNAwithoutchangingthefunctionalitiesofDNAsequences.Thisschemeadaptivelyvariestheembeddingprocessaccordingtotheamountofhiddendata.Experimentalresultsshowthattheproposedschemegivesasignificantlyimprovedhidingperformancethanpreviousschemes.Andtherobustnessandsecurityissuesarealsoanalyzed.

  • 标签: 植物新品种权 DNA序列 数据隐藏 认证 数字水印技术 核糖核酸
  • 简介:Inthispaper,awavelet-filteredgenetic-neuro-fuzzy(WGNF)controlsystemdesignframeworkforresponsecontrolofahighwaybridgeundervariousearthquakeloadsisdiscussed.TheWGNFcontrollerisdevelopedbycombiningfuzzylogic,discretewavelettransform,geneticalgorithms,andneuralnetworksforuseasacontrolalgorithm.ToevaluatetheperformanceoftheWGNFalgorithm,itistestedonahighwaybridgeequippedwithhydraulicactuators.Itcontrolstheactuatorsinstalledontheabutmentsofthehighwaybridgestructure.Variousearthquakesusedasinputsignalsincludeanartificialearthquake,theEl-Centro,Kobe,NorthPalmSprings,TurkeyBolu,Chi-Chi,andNorthridgeearthquakes.ItisprovedthattheWGNFcontrolsystemiseffectiveinmitigatingthevibrationofthehighwaybridgeunderavarietyofseismicexcitation.

  • 标签: structural control WAVELET TRANSFORM GENETIC ALGOR
  • 简介:Theeffectsofmoisturecontent(8%,10%and12%),variety(TaromandFajr)andparboilingonmillingqualityofriceasafunctionofmillingrecovery(MR),headriceyield(HRY),degreeofmilling(DOM)andwhitenesswereinvestigated.Theparboiledgrainswaspreparedwiththreesoakingtemperaturesof25oC,50oCand75oCandthreesteamingtimesof10,15and20min.Asaresultofparboiling,theincreasingratesofMRandHRYvalueswere7.8%and14.3%forTaromand9.8%and10.0%forFajr,respectively,andthedecreasingratesforDOMandwhitenesswere6.6%and10.8%forTaromand6.8%and10.5%forFajr,respectively.Moreover,decreasingmoisturecontentto8%maximizedMR(75.8%forTaromand74.3%forFajr)andHRY(65.8%forTaromand57.0%forFajr)whileincreasingthatto12%revealedmaximumvaluesofDOM(6.1%forTaromand6.2%forFajr)andwhiteness(24.8%forTaromand28.2%forFajr).

  • 标签: 水分含量 碾磨品质 水稻籽粒 品种 航空公司 罗马尼亚
  • 简介:地质的进程的数字建模例如披风传送对流,在多孔的媒介的流动,和地热的热转移,随计算和可用的软件的可获得性的增加变得相当普通。今天建模这些动态过程必要解决包含团,动量,精力和化学运输的管理方程。这些方程代表部分微分方程并且因为他们要求足够的空间、时间的分辨率有用,必须在足够强大的计算机上被解决。我们这里描述SEPRAN软件包裹的突出、突出的特征,当为一个柔韧、用户友好的软件的案例研究,地质的社区能在处理许多thermal-mechanical-chemical问题利用它在地质学发现了,在荷兰发展了,它将包括地热的状况,在部分微分方程的许多类型必须与thermodynamical输入参数同时被解决的地方。

  • 标签: 地球科学 有限元 偏微分方程 时间分辨率 套餐 用途
  • 简介:盆栽试验被进行学习不同的氮应用程序时间的效果(在期间直到ering或孕穗期)与一样,氮在颖果开发和米饭变化Yangdao6的谷物质量评价。增加的氮肥(脲),特别在孕穗期期间适用,能显然增加milled,雪白大米率和蛋白质与控制(没有氮申请)相比在米饭满足谷物,并且减少白垩的谷物率和直链淀粉内容。而且,增加的氮肥显著地影响了颖果发展并且当氮适用在期间时,提高了粒重直到ering和孕穗期,特别在孕穗期期间。在颖果开发期间,增加的氮肥适用在期间直到ering和孕穗期能显然减少全部的淀粉和直链淀粉内容,然而并非显然为在米饭的胶淀粉内容谷物。氮肥的增加的顶肥,特别在孕穗期期间适用,在amyloplasts和proteinoplasts的发展和结构的有的重要效果。也就是说,它能改变分发,数并且amyloplasts和proteinoplastsin塑造特别在谷物腹部的内乳房间。与控制相比,amyloplasts和proteinoplasts的安排各是更靠近的,与更多的数字,更高的密度和更少的间隙星际ohter。而且,大多数amyloplasts在增加的氮肥水平下面显示出多面体。

  • 标签: 颖果 稻子 产品质量 直链淀粉
  • 简介:Thepromoterregionofadroughtandabscisicacid(ABA)induciblegene,osr40c1,wasisolatedfromasalt-tolerantindicaricevarietyPokkali,whichis670bpupstreamoftheputativetranslationstartcodon.Insilicopromoteranalysisofresultedsequenceshowedthatatleast15typesofputativemotifsweredistributedwithinthesequence,includingtwotypesofcommonpromoterelements,TATAandCAATboxes.Additionally,severalputativecis-acingregulatoryelementswhichmaybeinvolvedinregulationofosr40c1expressionunderdifferentconditionswerefoundinthe5′-upstreamregionofosr40c1.TheseareABA-responsiveelement,light-responsiveelements(ATCT-motif,BoxI,G-box,GT1-motif,Gap-boxandSp1),myeloblastosisoncogeneresponseelement(CCAAT-box),auxinresponsiveelement(TGA-element),gibberellin-responsiveelement(GARE-motif)andfungal-elicitorresponsiveelements(BoxEandBox-W1).Aputativeregulatoryelement,requiredforendosperm-specificpatternofgeneexpressiondesignatedasSkn-1motif,wasalsodetectedinthePokkaliosr40c1promoterregion.Inconclusion,thebioinformaticanalysisofosr40c1promoterregionisolatedfromindicaricevarietyPokkaliledtotheidentificationofseveralimportantstress-responsivecisactingregulatoryelements,andtherefore,theisolatedpromotersequencecouldbeemployedinricegenetictransformationtomediateexpressionofabioticstressinducedgenes.

  • 标签: 启动子序列 计算机分析 籼稻品种 分离 顺式调控元件 CAAT盒
  • 作者: Li Meng-Yuan Li Lin Zhang Yue Wang Xiao-Sheng
  • 学科: 医药卫生 >
  • 创建时间:2020-08-10
  • 出处:《贫困所致传染病(英文)》 2020年第02期
  • 机构:Biomedical Informatics Research Lab, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China; Big Data Research Institute, China Pharmaceutical University, Nanjing 211198, China,Pinghu hospital of Shenzhen University, Shenzhen 440307, China; Futian Hospital for Rheumatic Diseases, Shenzhen 518000, China; Department of Rheumatology and Immunology, The First Clinical College of Harbin Medical University, Harbin 150001, China
  • 简介:AbstractBackground:Since its discovery in December 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has infected more than 2 180 000 people worldwide and has caused more than 150 000 deaths as of April 16, 2020. SARS-CoV-2, which is the virus causing coronavirus disease 2019 (COVID-19), uses the angiotensin-converting enzyme 2 (ACE2) as a cell receptor to invade human cells. Thus, ACE2 is the key to understanding the mechanism of SARS-CoV-2 infection. This study is to investigate the ACE2 expression in various human tissues in order to provide insights into the mechanism of SARS-CoV-2 infection.Methods:We compared ACE2 expression levels across 31 normal human tissues between males and females and between younger (ages ≤ 49 years) and older (ages > 49 years) persons using two-sided Student's t test. We also investigated the correlations between ACE2 expression and immune signatures in various tissues using Pearson's correlation test.Results:ACE2 expression levels were the highest in the small intestine, testis, kidneys, heart, thyroid, and adipose tissue, and were the lowest in the blood, spleen, bone marrow, brain, blood vessels, and muscle. ACE2 showed medium expression levels in the lungs, colon, liver, bladder, and adrenal gland. ACE2 was not differentially expressed between males and females or between younger and older persons in any tissue. In the skin, digestive system, brain, and blood vessels, ACE2 expression levels were positively associated with immune signatures in both males and females. In the thyroid and lungs, ACE2 expression levels were positively and negatively associated with immune signatures in males and females, respectively, and in the lungs they had a positive and a negative correlation in the older and younger groups, respectively.Conclusions:Our data indicate that SARS-CoV-2 may infect other tissues aside from the lungs and infect persons with different sexes, ages, and races equally. The different host immune responses to SARS-CoV-2 infection may partially explain why males and females, young and old persons infected with this virus have markedly distinct disease severity. This study provides new insights into the role of ACE2 in the SARS-CoV-2 pandemic.

  • 标签: SARS-CoV-2 COVID-19 SARS-CoV-2 cell receptor Angiotensin-converting enzyme 2 Gene expression SARS-CoV-2 pandemic Immune signatures