简介:<正>InthispaperitisprovedthatforallcompletelydistributivelatticesL.thecategoryofL-fuzzifyingtopologicalspacescanbewmbeddedinthecategoryofL-topologicalspaces(stratifiedChang-Goguenspaces)asasimultaneouslybireflectiveandbicoreflectivefullsubcategory.
简介:WeconstructaclassofintegrablegeneralizationofTodamechanicswithlong-rangeinteractions.ThesesystemsareassociatedwiththeloopalgebrasL(Cr)andL(Dr)inthesensethattheirLaxmatricescanberealizedintermsofthec=0representationsoftheaffineLiealgebrasCr(1)andDr(1)andtheinteractionspatterninvolvedbearsthetypicalcharactersofthecorrespondingrootsystems.WepresenttheequationsofmotionandtheHamiltonianstructure.Thesegeneralizedsystemscanbeidentifiedunambiguouslybyspecifyingtheunderlyingloopalgebratogetherwithanorderedpairofintegers(n,m).Itturnsoutthatdifferentsystemsassociatedwiththesameunderlyingloopalgebrabutwithdifferentpairsofintegers(n1,m1)and(n2,m2)withn2<n1andm2<m1canberelatedbyanestedHamiltonianreductionprocedure.Forallnontrivialgeneralizations,theextracoordinatesbesidesthestandardTodavariablesarePoissonnon-commute,andwheneithernorm≥3,thePoissonstructurefortheextracoordinatevariablesbecomessomeLiealgebra(i.e.theextravariablesappearlinearlyontheright-handsideofthePoissonbrackets).Inthequantumcase,suchgeneralizationswillbecomesystemswithnoncommutativevariableswithoutspoilingtheintegrability.
简介:摘要目的对一圆头精子症家系的DPY19L2基因进行变异分析,明确其遗传学病因。方法应用全外显子组捕获测序及生物信息学技术对该家系基因组进行分析,Sanger测序及实时荧光定量PCR(quantitative real-time PCR, qRT-PCR)技术对致病基因的变异进行验证。结果全外显子组测序分析、Sanger测序及qRT-PCR验证显示家系两患者及其母亲均存在DPY19L2基因c.384dup(p.Glu129*)杂合变异,两例患者及父亲存在覆盖DPY19L2基因全长约164.5 kb的大片段杂合缺失。结论两例圆头精子症患者DPY19L2基因c.384dup(p.Glu129*)变异及DPY19L2基因缺失是其致病原因,符合常染色体隐性遗传规律。
简介:摘要:对哈密探空站使用GTC2型L波段探空数据接收机过程中常见的问题进行阐述和分析,并提出了相应的解决方法,希望能够对使用该备份设备的台站提供一定的借鉴作用。
简介:Novelsulfur-containingcompounds(3a–3c,4a–4c)wereobtainedinethanolwith1,3-diphenyl-2-propanoneasthestartingmaterial.Theadvantagesofthisprocedureweremildreactionconditions,simpleprotocol,andhighyields.ThestructuresoftheproductswerecharacterizedbyIR,1HNMR,MSandelementaryanalysis.Thecrystalofthenewcompound4abelongstomonoclinic,spacegroupC2witha=18.727(3),b=6.5179(9),c=13.7576(18),b=131.0610(10)°,V=1266.2(3)A3,Z=2,Dc=2.136g/cm3,μ=1.078mm-1,F(000)=843,R=0.0490andwR=0.1247for3211observedreflectionwithI>2δ(I).X-rayanalysisrevealsthatthemoleculeisnotsymmetrical,themolecularstructureisstabilizedbyweakp–pstackinginteractions,andnoclassicalhydrogenbondscanbeobserved.
简介:摘要:威尼斯是欧洲防疫所最早建立的地方。此后威尼斯防疫体系成为其他欧洲国家的典范,并成为几个世纪以来广泛检疫控制的基础。欧洲其他防疫所的规则和关税显然是从威尼斯制定的规则借鉴的。威尼斯卫生署及其治安法官对于公共卫生具有特定职权,在清除和隔离来自疑似疫区的商品或乘客方面制定了条例和规章制度,规定防疫所所长、保安、信使、搬运工的职责,形成了一整套关于如何接收来自疑似疫区船只的方法,包括接待船长、检疫旅客以及在防疫所净化货物等。