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LetD be a Hermitian symmetric space of tube type,S its Shilov boundary andG the neutral component of the group of bi-holomorphic diffeomorphisms ofD.
      
Bi-Poisson Structures and Integrability of Geodesic Flow on Homogeneous Spaces
      
Gramian techniques are also used to verify whether a dual pair of affine frames is also a pair of bi-orthogonal Riesz bases.
      
Recent study on the subject is an indirect approach: in order to compute the Gabor coefficients, one needs to find an auxiliary bi-orthogonal window function γ.
      
In this article, we construct compactly supported multivariate pairs of dual wavelet frames, shortly called bi-frames, for an arbitrary dilation matrix.
      
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Experiments are performed to use a brand of Chinese filter paper in paper chromatographic analysis. The paper used is the "fine" grade filter paper manufactured by the First Eastern Factory, Fou-Shun. It appears that the filter paper, after adequate treatment, may be used in paper chromatographic work. Treatment essentially consists of washing with dilute hydrochloric acid and distilled water and ascending with suitable solvents of the particular cation-groups. In this experiment, the solvents used for chromatographic...

Experiments are performed to use a brand of Chinese filter paper in paper chromatographic analysis. The paper used is the "fine" grade filter paper manufactured by the First Eastern Factory, Fou-Shun. It appears that the filter paper, after adequate treatment, may be used in paper chromatographic work. Treatment essentially consists of washing with dilute hydrochloric acid and distilled water and ascending with suitable solvents of the particular cation-groups. In this experiment, the solvents used for chromatographic analysis of aluminium, silver and arsenic groups were modified from that used by F. H. Burstall and others. The results are summarized as follows:Group I R_f: K 0.45, Na 0.56, Mg 0.71Group Ⅱ R_f: Ba 0.45, Sr 0.53, Ca 0.61Group Ⅲa R_f: Al 0.02, Zn 0.73Group Ⅲb R_f: Fe 0.99, Co 0.44, Mn 0.30, Ni 0.00Group Ⅳa R_f: Ag 0.16, Pb 0.00, Hg 0.80Group Ⅳb R_f: Pb 0.02, Cu 0.30, Bi 0.67, Cd 0.82, Hg 0.90Group V R_f: As 0.79, Sb 0.93, Sn 0.95Besides, we have found a number of common reagents which can be used to develop the cations on such kind of filter paper. After chromatographic separation, their sensitivity is determined. The R_f of both the ascending and descending processes has very close values. When temperature varies within 5°C, the R_f values change very little.

1.国产抚顺东一廠细号濾纸对无机阳离子層析的效果不低於进口滤纸。为了適應该纸的性質,铝族、银族、砷族所用溶剂曾略加修改。并找出该纸所含杂質较多,使用前须先用该组溶剂上昇一次,同时又可消除鬼斑(ghost spot)。 2.在此国产濾纸上较全面地整理了各分析组离子層析的条件,以便於未知物在此纸上进行系统層析及检验。并對層析後的離子进行了靈敏度的测定。 3.在国产纸上層析无机陽離子时,温度以及上昇法與下降法對R_f值之影响不大。

Л epeaToHoe oTHoeHe peykTopa Mey ekTpoBaTee paoMMexaHMoM MeeT pMoe BHe Ha TexHecko-koHoMecke okaaTeekTpopBoa. paBbHbI BbIop epeaToHoo oTHoeH HoMHab-Ho ckopocT ekTpoBaTe BeTc oHM 3 BaHx BopocoB B po-ekTpoBaH ekTpopBooB. B HacToe cTaTbe oeHbI cyecTByoe MeToLI BbIopa oTMa-bHoo epeaToHoo ca HekoTopbIx ocHoBHbIx cyaeB。ABTopoM pe-aaTc ooHTebHbIe cyeH k HekoTopbIM paccMoTpeHHbIM cyaM. 40 eT ToMy Haa, HayHbIe cceoBaTe Haa yaTb paccMoTpeH-HbI B aHHo cTaTbe Bopoc。 cxo ycoB paroHa poBocTBeHHoro MexaHMa o aaHHockopocT B...

Л epeaToHoe oTHoeHe peykTopa Mey ekTpoBaTee paoMMexaHMoM MeeT pMoe BHe Ha TexHecko-koHoMecke okaaTeekTpopBoa. paBbHbI BbIop epeaToHoo oTHoeH HoMHab-Ho ckopocT ekTpoBaTe BeTc oHM 3 BaHx BopocoB B po-ekTpoBaH ekTpopBooB. B HacToe cTaTbe oeHbI cyecTByoe MeToLI BbIopa oTMa-bHoo epeaToHoo ca HekoTopbIx ocHoBHbIx cyaeB。ABTopoM pe-aaTc ooHTebHbIe cyeH k HekoTopbIM paccMoTpeHHbIM cyaM. 40 eT ToMy Haa, HayHbIe cceoBaTe Haa yaTb paccMoTpeH-HbI B aHHo cTaTbe Bopoc。 cxo ycoB paroHa poBocTBeHHoro MexaHMa o aaHHockopocT B MHMyM BpeMeH L.A. Umansky pBe φopMyy paceTaepeaToHoro ca. Ta e φopMya oee a pBeeHa A.H.e-koBbIM: Ho cya, koa pao Ba poBocTBeHHoo MexaHMaBpaaeTC c MakcMabHbIM coM oopoToB aaHo BpeM paoHa。 H.A.TeHko BbIBe φopMyy paceTa cya, koa poBocTBe-HHbI MexaHM BpaaIoT c opeeeHHo ckopocTb, peHepera MoMeHToMHarpyk, oeceBa kpaTaee BpeM paoHa TopMoeH. P.ApoHoBbIM bIa oyeHa φopMya, yeTbIBaa BH MoMe-HTa Hapyk, Ho B peooeH, To yckoBo MoMeHT paBHeTc TopMo-HoMy MoMeHTy. B oHx Tex e ycoBx, c yeToM BH HapyoHoo MoMeHTaoHoBpeMeHHo, c yeToM HepaBeHcTBa yckoBoo TopMoHoo MoMeHTOB,aBTop HacToe cTaTb Hae ceyoee ypaBHeHe:BbIe yoMHyTbIe φopMybI MokHo paccMoTpBaTb kak acTHbIe cya Too ?oero ypaBHeH. To ypaBHeHe aeT pBybTaTbI, coBaae c ypaBHeHeM, oyeH-HbIM A. ekoBM H.KyHkHM p pyx cxoHbIx ycoBx. oHpH B ycoB HeycTaHoBBc peM, koa yT epeMeeH Mexa-HMa Heobe ycTaHoBBac ckopocTb He ocTaeTc,a BpeM paoTbIcBoTc k MHMyMy. BbIcHeH pH cxocTBa peybTaToB aBToppoBe aHaTex ypaBHeH. yocTBa pakTeckoo coboBaH aBTop BBe HekoTopoe pe-opaoBaHe pBeeHHoro ypaBHeH. B peybTaTe peopaoBaHypaBHeH aBTop cBe ecTb napaMeTpoB k TpeM, T. e. oy Ha oHapaMeTp MeHbe o cpaBHeH c φopMyo BbIBeeHHo A.ekoBbIMH.KyHkM. A.ekoB H.KyHk pBe Tak e φopMyy paceTa epe-aToHooca cya ycTaHoBBeroc pekMa, koa yT epeMe-eH Bek ocTaeTc ycTaHoBBac ckopocTb, oycka, To Ha-pyoHbI MoMeHT HToeH M MoHo peHepeb. cxo Takx eycoB, Ho c yeToM Ha HarpyoHoo MoMeHTa; oycka, To yck-oBo MoMeHT paBHeTc TopMoHoMy MoMeHTy, aBTop oy ypaBHeHepaceTa epeaToHoro Hca. yocTBa pMeHeH pBeeHHoe ypaB-eHe BbIpaeHo B Be kpBo. cpaBHeH BH paHbIx epeaToHbIx oTHoeH Ha BpeMycka TopMoeH B HacToe cTaTbe papaoTaH pocTo paφeckMeTo opeeeH BpeMeH ycka TopMoeH B aBcocT oTepeaToHoo ca. Bce BbIe ykaaHHbIe cocobI paccMoTpBaTc cya, kora ek-TpoBaTe BbIpaHbI. KpoMe Too, BaHoe HaeHe MeeT Bopoc, kaoopaTb BaTeb eo HOMHabHy ckopocTb B Haae paceTa. B。K.ooB okaa, To MHMabHbIe oTep Hep B epexoHoMpoecce MoHo yyT, Koa pMeHeTc BaTeb, Meo HaMeHb-ee poBeeHe GD~2_?n~2_(H?)。ABTopoM HacToe cTaTb ycTaHoBeHo, ToMHMabHoe BpeM ycka TopMoeH ocTaeTc Take ocpecTBoMpMeHeH BTaTe,Meero HaMeHbe GD~2_?n~_? p oHakoBo Ho-MHabHo MoHocT BaTee。OTMeHo Take, To B cyae oycka-HHeMHoo yBeeqeH MoHocT BaTe oeceeH MHMabHoo BpeMeH ycka TopMoeH MoHo BbIpaTb BaTeb, KoToporo Be-Ha 1/P_n(GD~2_?n~2_(H?)+GD~2_Mn~2_M)koToporo yeT HaMeHbe. ? B cBoe cTaTbe B.eep cea Ba BbIBoa p aaHHoM epeaTo-qHoM ce oeceeH MHMyMa BpeMeH ycka: To BbIpaTb BaTeb c MakcMabHbIM M; To BbipaTb BraTeb c MakcMabHbIMM_n/GD~2_?. T BbIBobI MoHo BkTb B o BbIBo, ykaaHHbI aBTopoMHbI1/P_a(GD~2_?n~2(H?)+GD~2n~2_M).BHo pBbIe, BbIopa MHMabHo BeHbI1/P_a(GD~2_?n~2(H?)+GD~2n~2_M). BHo pocToHHbIx n_M, K, To ec GD~2_?K~2<bI aH Take oop paboTaM pyrx aBTopoB opaccMoTpBaeMoMy Bopocy。

电动机和生产机械间的变速装置的传速比,直接影响到电力拖动装置的技术经济指标。正确地选择传速比及相应的电动机额定转速,是设计电力拖动装置的一个重要问题。 在本文中阐述了在几种主要情况下现有的选择最佳传速比的方法。作者对於某些情况提出了一些补充意见。 在四十多年以前就有一些学者开始研究本文中所讨论的问题。L.A.尤曼斯基根据生产机械起动到给定的速度,能保证起动时间最短的条件出发,导出了计算传速比的公式。А.И.采利柯夫也导出了同样的公式,但是他是根据在给定的时间内,使生产机械的工作轴能转过最多转数的条件出发。 H.A.齐申科对于生产机械以一定的速度旋转,忽略负载转矩,保证起动制动时间最短的情况,导出了计算公式。而Р.Л.阿朗诺夫的公式则是考虑负载转矩的影响,而假定起动转矩同制动转矩相等。 本文作者在同样的条件下,既考虑负载转矩,又考虑起动转矩与制动转矩的不等,得出如下的方程式: GD_δ~2MтMпK~4+2GD_δ~2Mм(Mп-Mт)K~3-(GDм~2MтMп+3GD_δ~2Mм~2)K~2- -GDм~2Mм~2=0。上述的公式都可以看成是这个普遍方程式的特例。 这个方程式与А.И.采利柯夫和Н.П.库尼...

电动机和生产机械间的变速装置的传速比,直接影响到电力拖动装置的技术经济指标。正确地选择传速比及相应的电动机额定转速,是设计电力拖动装置的一个重要问题。 在本文中阐述了在几种主要情况下现有的选择最佳传速比的方法。作者对於某些情况提出了一些补充意见。 在四十多年以前就有一些学者开始研究本文中所讨论的问题。L.A.尤曼斯基根据生产机械起动到给定的速度,能保证起动时间最短的条件出发,导出了计算传速比的公式。А.И.采利柯夫也导出了同样的公式,但是他是根据在给定的时间内,使生产机械的工作轴能转过最多转数的条件出发。 H.A.齐申科对于生产机械以一定的速度旋转,忽略负载转矩,保证起动制动时间最短的情况,导出了计算公式。而Р.Л.阿朗诺夫的公式则是考虑负载转矩的影响,而假定起动转矩同制动转矩相等。 本文作者在同样的条件下,既考虑负载转矩,又考虑起动转矩与制动转矩的不等,得出如下的方程式: GD_δ~2MтMпK~4+2GD_δ~2Mм(Mп-Mт)K~3-(GDм~2MтMп+3GD_δ~2Mм~2)K~2- -GDм~2Mм~2=0。上述的公式都可以看成是这个普遍方程式的特例。 这个方程式与А.И.采利柯夫和Н.П.库尼茨基从另外的观点得出的方程式相同。他们的条件是机械移动行程不大,尚未达到稳态速度的未达稳态情况,?

? B aHHo cTaTbe bI pekoMeHoBaH aHaTeck MeTo. BbIceHkoeHTa opMbI ya cMeaHHoo yaTHoo koeca, peaHoo MeTo-oM okaTok, B koTopoM BkeHo HapeaHe yopeHo, pek HapeaHepeboBo peo, aToka y HapeaHe yaTHbIM okoM. B kaecTBe pMepa BbIceH koeHTa opMbI ya cMeaHHo-o yaTHoo koeca pBeeHo BbIceHe koeHTa opMbI ya cMe-maHHoo yaTHoo koeca, peaHHoo cxoHo HcTpyMeHTabHo pekc ceyM aHHbIM:yro po ocHoBHo pek α_0=20°,ko-eHT BP OTbI ya ocHoBHo pek f_0=1, koeHT paabHoo aopac_0'=0.25. B peybTaTe Takoo BbIceH bI koppekTpoBaHbI aBTopoMcyecTBye...

? B aHHo cTaTbe bI pekoMeHoBaH aHaTeck MeTo. BbIceHkoeHTa opMbI ya cMeaHHoo yaTHoo koeca, peaHoo MeTo-oM okaTok, B koTopoM BkeHo HapeaHe yopeHo, pek HapeaHepeboBo peo, aToka y HapeaHe yaTHbIM okoM. B kaecTBe pMepa BbIceH koeHTa opMbI ya cMeaHHo-o yaTHoo koeca pBeeHo BbIceHe koeHTa opMbI ya cMe-maHHoo yaTHoo koeca, peaHHoo cxoHo HcTpyMeHTabHo pekc ceyM aHHbIM:yro po ocHoBHo pek α_0=20°,ko-eHT BP OTbI ya ocHoBHo pek f_0=1, koeHT paabHoo aopac_0'=0.25. B peybTaTe Takoo BbIceH bI koppekTpoBaHbI aBTopoMcyecTBye rpaecke TabI, BbIceHbI TabI HecMeeHHoroyaToo koeca pak cMeeHHoro yaTHoro koeca, koTopbIe MoryT6bITb coboBaHbI poekTpoBaH ya. KpoMe Toro, bI Take HaeHbI aBTopoM payc kpBHbI oacHoroceeH Hok y, TeopeTeck koeHT koHeHTpa HanpeHba y kopH ya α_σ okaaHbI BaHocTb koIIeHTa aIIIxHanpeH α_σ/πy_ξ MeTo BbIceH.

介绍用创成法(包括用齿条刀,螺旋铣刀,磨齿和插齿刀)切削的变位齿轮齿形系数πy_ξ的解析计算法。以刀具角α_a=20°,齿顶高系数f_0=1,径向间隙数c′_0=0.25的标准齿条刀切削的变位齿轮齿形系数为例,对已有的图解数表作了修正,计算出标准齿轮的数表和变位齿轮的图表来供设计使用。此外,还求出危险断面的齿根曲率半径,指出理论应力集中系数α_σ,弯曲应力系数(α_σ/πy_ξ)的重要性和其求法。

 
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