简介：Theinfluencesofsilicavolumefraction,electrolyteconcentrationandpHvalueuponthestressdependenceofelasticmodulusG′andviscousmodulusG″wereinvestigated.Theresultsshowthatthesuspensiontransformsfromaliquid-likestatetoasolid-likestatewithincreasingthevolumefractionofsilica.Suchasolid-likestatecanbetransformedbackintoaliquid-likestateundertheapplicationofalargerstress.Atthehighervolumefraction,thelargercriticalstressisrequiredtoinducethetransitionfromsolid-liketoliquid-likestate.AstheelectrolyteconcentrationdecreasesorpHvalueincreases,theinter-particleforceincreases,whichcausesthestatetransitiontooccuratahigherstress.

简介：Hartree-Fock-Roothaan(HFR)calculationsforgroundstatesofsomeatoms,i.e.He,Be,Ne,Ar,andKrhavebeenperformedusingminimalbasissetsofSlatertypeorbitals(STOs)withintegerandnonintegerprincipalquantumnumbers(integern-STOsandnonintegern-STOs).Theobtainedtotalenergiesfortheseatomsusingminimalbasissetsofintegern-STOsareingoodagreementwiththoseinthepreviousliterature.Ontheotherhand,forthecaseofminimalbasissetsofnonintegern-STOs,althoughthecalculatedtotalenergiesoftheseatomsagreewellwiththeresultsinliterature,somestrikingresultshavebeenobtainedforatomsArandKr.OurcomputationalresuitsfortheenergiesofatomsArandKrareslightlybetterthanthoseinliterature,byamountof0.00222and0.000054a.u.,respectively.TheimprovementintheenergiesofatomsArandKrmayresultfromtheefficientcalculationsofone-centertwo-electronintegralsovernonintegern-STOs.Forsomeatomicionsintheirgroundstate,HFRcalculationshavebeencarriedoutusingminimalbasissetsofnonintegern-STOs.Theobtainedtotalenergiesfortheseatomicionsaresubstantiallylowerthanthoseavailableinliterature.