简介:Thispresentstudyinvestigatedtheabilityofvarioussoyproteinhydrolysates(SPHs)inbindingcalcium.ItwasdemonstratedthattheamountofCa-bounddependedgreatlyontheSPHsobtainedusingdifferentproteases,whichincluded:neutrase,flavourzyme,proteaseMandpepsin.ThemaximumlevelofCa-bound(66.9mg/g)occurredwhenproteaseMwasusedtohydrolyzesoyprotein.PeptidefragmentsexhibitinghighCa-bindingcapacityhadmolecularweightsofeither14.4or8-9kDa.ThelevelofCa-boundincreasedlinearlywiththeincrementofcarboxylcontentinSPHs,andfurtherdeamidationonSPHsfromproteaseMimprovedCa-bindingofthehydrolysate.
简介:Thereexiststrongmultipatheffectsinashallowwateracousticchannel.Thepaperdiscussessomeoftheseimportanteffects.Thestati-sticalcharacteristicsofmultipathinshallowwaterarefirstdescribed,thentheanti-multipathabilityofDTCAschemeisanalysed.TheoreticalestimationsandfieldexperimentshaveprovedthatbothDTACAandDTCCAhaveahighabilityofanti-multipathandevenmakeuseofthemultipathenergy.
简介:Theglass-formingability(GFA)andmagneticpropertiesoftheGd_(50)Coso-basedamorphousaiioywithAladditionsubstitutionforCoareinvestigated.ItisfoundthattheGFAandmagneto-caloriceffectoftheGd_(50)Co_(45)Al_5amorphousaiioyarebetterthanGd_(50)Co_(50)amorphousalloy.Themaximummagneticentropychange(-△S_m~(peak))andthemagneticrefrigerantcapacityoftheamorphousalloyunderafieldof5Tareabout6.64J·kg~(-1)K~(-1)and764J·kg~(-1),respectively.Thefielddependenceofmagneticentropychangemeetstheonepredictedbythemeanfieldtheory,whichisinvestigatedforabetterunderstandingofthemagneto-caloricbehaviorsoftheGd_(50)Co_(45)Al_5amorphousalloy.
简介:本文译自A.P.FRENCH主编的《工程技术领域中的物理学》(PhysicsInATechnologicalWorld)一书中的《1987年物理学现状》(TheStateotPhysics—1987),作者D.AllanBromley对1987年以前物理学状况的巡礼,就物理学的柱石、自然界的作用力、基本粒子物理学、核物理、原子物理、等离子体物理、凝聚态物理、光学、混沌物理、地球物理、天体物理及引力波等方面作了极其广泛和深刻的综述。限于篇幅,此处仅选择其中的原子物理部份。二十世纪的科学与技术的发展,与原子物理学的进展息息相关,本文给出了一个维妙的景象。