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简介：Inthepresentanalysisontherelationshipsamongthedepthoflithospherebrittlefracture,seismotectonicsandgeothermalanomalousactiveinTibetanplateauwereinvestigatedusingtheseismicdadafromISCandChineseseismicnetandgeothermaldata.Theresultssuggestthattheregionofanomalouslygeothermalactivityalmostcoincideswiththatofthenormalfaultingtypeearthquake.Thegeothermalanomalyactivityregioncoincidesspatiallywiththatoftheeventsdeeperthan60kmaswellas.Thenormalfaultingearthquakesmaybemainlytectonicactivityregimesuntil110kmdeepinthethermalanomalyregion.ThestrikedirectionsofeventsarelikelytheN-Sdirection,coincidingwiththestrikeofthethermalanomalyactivebelts.Theearthquakesalignalongthenormalfaultsandfaulted-depressionzonewiththeN-Sdirection.Thethermalanomalyactivityalsodistributesalongthefaulted-depressionzone.Manyeventsdeeperthan60kmexistintheanomalouslygeothermalactivityregionintheplateau.Eventsextendtobottomofthelithosphereof110kmfromthesurface,likecolumnarseismiccrowd.ThelithosphereextendsalongtheE-WdirectionduetotheE-WextensionalstressinthecentralandsouthernTibetanplateau,altitudeoftheplateau.ThetensionalstressintheE-WresultsinthelithospherefracturesandthenormalfaultsstrikingN-Sdirection,grabensandfaulted-depressionzones.Thermalmaterialfromtheasthenospherewellsupwardtothesurfacealongdeepseismicfracturesandfaultsthroughthethickcrust.TheanomalouslythermalactivitiesareattributabletotheupwellingthermalmaterialfromthemantleinthealtitudeofTibetanplateau.

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简介：Azero-dimensionalmodelwhichincludes56speciesofreactantsand427reactionsisusedtostudythebehaviorofchargedparticlesinatmosphericplasmaswithdifferentionizationdegreesatlowaltitude(near0km).TheconstantcoefficientnonlinearequationsaresolvedbyusingtheQuasi-steady-stateapproximationmethod.Theelectronlifetimesareobtainedforafterglowplasmawithdifferentinitialvalues,andthetemporalevolutionsofthemainchargedspeciesarepresented,whicharedominantinreactionprocesses.Theresultsshowthattheelectronnumberdensitydecaysquickly.Thelifetimesofelectronsareshortenedbyabouttwoorderswithincreasingionizationdegree.Electronsthenattachtoneutralparticlesandproducenegativeions.Whentheinitialelectrondensitiesareintherangeof1010～1014cm3,thenegativeionshavesufficientlyhighdensitiesandlonglifetimesforairpurification,disinfectionandsterilization.Electrons,O2,O4,CO4andCO3arethedominantnegativespecieswhentheinitialelectrondensityne0≤1013cm3,andonlyelectronsandCO3areleftwhenne0≥1015cm3.N+2,N+4andO+2aredominantinthepositivechargesforanyionizationdegree.Otherpositivespecies,suchasO+4,N+3,NO+,NO+2,Ar+2andH3O+·H2O,aredominantonlyforacertainionizationdegreeandinacertainperiod.

简介：ThegeneticdifferentiationofKoreanpine(Pinuskoraiensis)indifferentaltitudesinChangbaiMountainwasanalyzedbyISSRtechnique,anditwasfoundthatthelevelofgeneticdiversityofKoreanpinereducesalongwithaltitudeincreasinginChangbaiMountain.ThevariationofKoreanpineismainlyfromintra-populationandthereisapositiverelativitybetweengeneticdistanceandverticalgeographicdistanceofKoreanpineindifferentaltitudes.ThegeneticcoherenceshowsthataltitudehaslessinsulationtoKoreanpine.Therefore,itisdeducedthattheterrainformationofverticaldistributionofKoreanpineisaresultofdiffusionfromloweraltitudetohigheraltitudeinthecourseofenlargingitsadaptability.

简介：为在位置精确上获得高度的二种方法的效果被分析，并且错误表情被推出。当那个高度错误在东方西方位置误差上有小效果，在二个盒子中，放的精确上的一样的高度错误的效果是相同的许多模拟结果表演，和二个高度错误影响放精确的规则能被表示，但是在thesouth北方位置误差上有大效果。

简介：BasedontheopticaldatafortransmittedradiationthroughseaiceintheArcticduringthelateautumnandearlywinterof2007,theauthorsstudiedthearrivingsolarradiation,reflectedradiationandtransmittedradiationunderverylowsolaraltitude.Throughtheatmosphere,thelightofthearrivingsolarradiationatshortwavelengthwasweakened,withthespectraldistributionofdoublepeakscenteredat490nmand683nm.Themagnitudeofthepeakat683nmevenexceededthatat490nmundertheverylowsolarradiationcondition.Thereflectionwaslowerthanthatinsummertimebecauseofthethinthicknessesoficeandsnow,allowinghigherratioofheattoentertheseaiceandsnow.Whenhigherratioofsolarradiationenteredseaiceinlateautumn,thenewicefreezingwouldbeaffected.Thespectralreflectivityfromsnowsurfacewasalmostaconstant,butthereflectionwithoutsnowde-creasedatlongerwavelengths.Inthetransmissionspectrum,thelightof490nmwasdominant.Itindicatesthattheradiationatlongerwavelengthwasweakenedbyseaice.Therefore,undertheconditionoflowsolaraltitude,theradiationatshorterwavelengthwasweakenedbytheatmospherewhiletheradiationatlongerwavelengthwasweakenedbytheseaice.Thecombinedeffectofat-mosphereandseaicemadethesolarradiationunderseaicemuchweaker.Theabsorptionofseaiceforthelonger-wavelengthradiationallowedtheseaicetogainmoreheattoslowdownthefreezingprocess.

简介：Icenucleatingparticle（INP）measurementsweremadeattwohigh-altitudestationsinIndia.AerosolscollectedonfilterpaperatGirawaliObservatory,InterUniversityCenterforAstronomy&Astrophysics（IGO）,andattheRadioAstronomyCenter,Ooty（RAC）,wereactivatedindepositionmodeusingathermalgradientdiffusionchambertodeterminetheINPconcentrations.ThemeasurementcampaignsatIGOwereconductedduring2011,2013and2014,andatRACduring2013and2014.Whentheaerosolsampleswereexposedtoanicesupersaturationofbetween5%and23%inthetemperaturerange-17.6?Cto-22?C,themaximumINPnumberconcentrationatIGOandRACwas1.0L-1and1.6L-1,respectively.Amaximumcorrelationcoefficientof0.76wasobservedbetweentheINPnumberconcentrationandicesupersaturation.TheairmasstrajectoriesanalyzedforthemeasurementcampaignsshowedthattheArabianDesertandaridregionswerethemainINPcontributors.ElementalanalysisofparticlesshowedthepresenceofNa,Cl,Si,Al,Fe,Cu,Co,Cd,S,MnandK,aswellassomerare-EarthelementslikeMo,Ru,La,Ce,VandZr.Whenaerosolsinthesizerange0.5–20μmwereconsidered,thefractionthatactedasINPswas1:104to1:106atIGO,and1:103to1:104atRAC.ThehigherratioofINPstoaerosolsatRACthanIGOmaybeattributabletothepresenceofrare-EarthelementsobservedintheaerosolsamplesatRAC,whichwereabsentatIGO.

简介：AbstractPurpose:Rapid decompressive craniectomy (DC) was the most effective method for the treatment of hypertensive intracerebral hemorrhage (HICH) with cerebral hernia, but the mortality and disability rate is still high. We suspected that hematoma puncture drainage (PD) + DC may improve the therapeutic effect and thus compared the combined surgery with DC alone.Methods:From December 2013 to July 2019, patients with HICH from Linzhi, Tibet and Honghe, Yunnan Province were retrospectively analyzed. The selection criteria were as follows: (1) altitude ≥1500 m; (2) HICH patients with cerebral hernia; (3) Glascow coma scale score of 4-8 and time from onset to admission ≤3 h; (4) good liver and kidney function; and (5) complete case data. The included patients were divided into DC group and PD + DC group. The patients were followed up for 6 months. The outcome was assessed by Glasgow outcome scale (GOS) score, Kaplan-Meier survival curve and correlation between time from admission to operation and prognosis. A good outcome was defined as independent (GOS score, 4-5) and poor outcome defined as dependent (GOS score, 3-1). All data analyses were performed using SPSS 19, and comparison between two groups was conducted using separate t-tests or Chi-square tests.Results:A total of 65 patients was included. The age ranged 34-90 years (mean, 63.00 ± 14.04 years). Among them, 31 patients had the operation of PD + DC, whereas 34 patients underwent DC. The two groups had no significant difference in the basic characteristics. After 6 months of follow-up, in the PD + DC group there were 8 death, 4 vegetative state, 4 severe disability (GOS score 1-3, poor outcome 51.6%); 8 moderate disability, and 7 good recovery (GOS score 4-5, good outcome 48.4%); while in the DC group the result was 15 death, 6 vegetative state, 5 severe disability (poor outcome 76.5%), 4 moderate disability and 4 good recovery (good outcome 23.5%). The GOS score and good outcome were significantly less in DC group than in PD + DC group (Z=-1.993, p = 0.046; χ2= 4.38, p= 0.043). However, there was no significant difference regarding the survival curve between PD + DC group and DC group. The correlation between the time from admission to operation and GOS at 6 months (r=-0.41, R2= 0.002, p= 0.829) was not significant in the PD + DC group, but significant in the DC group (r=-0.357, R2= 0.128, p= 0.038).Conclusion:PD+ DC treatment can improve the good outcomes better than DC treatment for HICH with cerebral hernia at a high altitude.

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