检索结果-南通市图书馆

On the ground state energy of the inhomogeneous Bose gas

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2017年第3期12卷 197-201页

作者： v. B. bobrov S. A. Trigger Joint Institute for High Temperatures Russian Academy of Sciences 13/19 Izhorskaia Str. Moscow 125412 Russia

Within the self-consistent Hartree^Fock approximation, an explicit in this approximation expression for the ground state energy of inhomogeneous Bose gas is derived as a functional of the inhomogeneous density of the Bose-Einstein condensate. The results obtained are based on existence of the off-diagonal long-range order in the single-particle density matrix for systems with a Bose-Einstein condensate. This makes it possible to avoid the use of anomalous averages. The explicit form of the kinetic energy, which differs from one in the Gross-Pita.v.ki approach, is found. The obtained form of kinetic energy is valid beyond the Hartree--Fock approximation and can be applied for arbitrary strong interparticle interaction.

关键词： Bose condensation elementary excitations single-particle Green function density-density Green function thermodynamic energy

Alien species of mammals and their impact on natural ecosystems in the biosphere reserves of Russia

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2008年第2期3卷 83-94页

作者： valery M.NERONOv Ludmila A.KHLYAP vladimir v.bobrov Andrey A.WARSHAvSKY A.N.Severtsov Institute of Ecology and Evolution Russian Academy of SciencesMoscowRussia

The paper analyses the results of a survey of 37 Russian biosphere reserves using questionnaires concerning thepresence of alien species of mammals, their pathways of penetration, and their impacts on protected *** penetration of alien mammals into terrestrial ecosystems of Russia is extensive, both in places with maximumhuman environmental impact (inhabited areas and agricultural lands) and in biosphere reserves with minimal humanimpact. There are 62 mammal species registered as alien in Russian ecosystems and they account for 22% of theterrestrial mammal fauna of Russia. The percentage of alien species in biosphere reserves is 32.6% at most. In mostregions, Castor fiber, Ondatra zibethicus, Nyctereutes procyonoides, Canis familiaris, Neovison vison and Susscrofa are very dangerous, and both Castor fiber and Sus scrofa can have environment-forming impacts.

关键词： alien species biosphere reserves invasions mammals(Mammalia) Russia.

南乌拉尔玛克苏托夫榴辉岩蓝片岩杂岩体的岩石学

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地球科学进展 2001年第2期16卷 147-152页

作者： A.A.Marakushev a.v.bobrov v.G.Butvina 桑隆康刘嵘 Department of Petrology 中国地质大学地球科学学院湖北武汉430074

玛克苏托夫 (Maksyutov)榴辉岩是乌拉尔—昆仑—祁连—秦岭—大别山元古代褶皱带之一部分。榴辉岩呈团块或布丁夹于片麻岩内 ,由于显生宙与花岗岩侵入有关的退变质叠加影响 ,时代变化自元古代至下古生代。榴辉岩矿物组分恒定但不同程度... 详细信息

玛克苏托夫 (Maksyutov)榴辉岩是乌拉尔—昆仑—祁连—秦岭—大别山元古代褶皱带之一部分。榴辉岩呈团块或布丁夹于片麻岩内 ,由于显生宙与花岗岩侵入有关的退变质叠加影响 ,时代变化自元古代至下古生代。榴辉岩矿物组分恒定但不同程度受绿帘蓝片岩相退变质叠加 ,榴辉岩中石榴石以富铁为主 (f=50 %～ 75% ) ;单斜辉石为绿辉石 Jd40 .3～ 52 .2。据 Krogh石榴子石—单斜辉石温度计 ,榴辉岩形成温度为 1 0 60～ 686℃ ,压力为 2 2 .3× 1 0 5～ 1 4.1 6× 1 0 5k Pa;PT轨迹具岩浆 (榴辉岩浆 )自上地幔向下地壳上侵的特点。

关键词：榴辉岩蓝片岩岩石学矿物学玛克菌托夫杂岩体退变质作用

Diversity of Symplocos(Symplocaceae,Ericales)at low latitudes in Asia during late Oligocene and Miocene

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2024年第6期46卷 812-816页

作者： Sheng-Lan Xu Tatiana Kodrul Mikhail S.Romanov Alexey v.F.Ch.bobrov Natalia Maslova Shu-Feng Li Qiong-Yao Fu Wei-Ye Huang Cheng Quan Jian-Hua Jin Lu-Liang Huang State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences/School of EcologySun Yat-sen UniversityGuangzhou 510275China Geological Institute Russian Academy of SciencesMoscow 119017Russia Tsitsin Main Botanical Garden Russian Academy of SciencesMoscow 127276Russia Department of Biogeography Geographical FacultyM.V.Lomonosov Moscow State UniversityMoscow 119991Russia Borissiak Paleontological Institute Russian Academy of SciencesMoscow 117997Russia CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China Natural History Museum of Guangxi Nanning 530012China School of Earth Science and Resources Chang'an UniversityXi'an 710054China

The family Symplocaceae includes over 300 species of trees and shrubs that have a disjunct distribution in the warmtemperate to tropical regions of eastern,southern,and southeastern Asia,eastern Australia,and the *** ... 详细信息

关键词： accommodate eastern latitude

中国东部苏鲁榴辉岩超基性岩褶皱带的演化及其与大别(中国)和柯切塔夫(哈萨克斯坦)杂岩的对比(英文)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地学前缘 2003年第3期10卷 277-289页

作者： A.A.MARAKUSHEv1 SANG Long-kang a.v.bobrov ZHOU Han-wen LIU Fu DepartmentofPetrology GeologicalFacultyM.V.LomonosovMoscowStateUniversityLeninskieGoryMoscow119992Russia FacultyofEarthSciences ChinaUniversityofGeosciencesWuhan430074China

苏鲁褶皱带形成于元古宙 (2 2 33～ 185 5Ma)典型优地槽构造环境 ,主要由石榴橄榄岩、石榴辉石岩、榴辉岩等侵入岩 (柯石英深度相地幔岩浆房中形成 )和它们的火山沉积建造围岩一起经褶皱、变质而形成。变质作用经历了先蓝片岩相 (前花岗... 详细信息

苏鲁褶皱带形成于元古宙 (2 2 33～ 185 5Ma)典型优地槽构造环境 ,主要由石榴橄榄岩、石榴辉石岩、榴辉岩等侵入岩 (柯石英深度相地幔岩浆房中形成 )和它们的火山沉积建造围岩一起经褶皱、变质而形成。变质作用经历了先蓝片岩相 (前花岗岩 )后片麻岩混合岩相过程。由于变质作用的不规律性 ,苏鲁褶皱带可分为 2个构造带 :(1)东部构造带 (蓝片岩 )和 (2 )西部构造带 (片麻岩混合岩 )。根据A·都城秋穗所识别的变质带系统 ,可将其作为一个双变质带。东部构造带以出现许多块状、条带状榴辉岩辉石岩橄榄岩组合的残余岩块为特征 ,其中还残留着高压的矿物 (石榴石、绿辉石、柯石英 ) ,而且有被混合岩和各种交代岩替代的显著标志。在中生代 ,苏鲁元古褶皱带受造山作用的影响活化 ,导致许多花岗岩体的侵入 ,使交代岩广泛发育。

关键词：苏鲁褶皱带榴辉岩-超基性岩蓝片岩相变质流体交代作用

Recent results from the KEDR detector

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2010年第6期34卷 650-655页

作者： v.v.Anashin v.M.Aulchenko E.M.Baldin A.K.Barladyan A.Yu.Barnyakov M.Yu.Barnyakov S.E.Baru I.v.Bedny O.L.Beloborodova A.E.Blinov v.E.Blinov a.v.bobrov v.S.bobrovnikov a.v.Bogomyagkov A.E.Bondar A.R.Buzyka.v.S.I.Eidelman Yu.M.Glukhovchenko v.v.Gulevich D.v.Gusev S.E.Karna.v.S.v.Karpov T.A.Kharlamova.v.A.Kiselev S.A.Kononov K.Yu.Kotov E.A.Kravchenko v.F.Kulikov G.Ya.Kurkin E.A.Kuper E.B.Levichev D.A.Maksimov v.M.Malyshev A.L.Maslennikov A.S.Medvedko O.I.Meshkov S.I.Mishnev I.I.Morozov N.Yu.Muchnoi v.v.Neufeld S.A.Nikitin I.B.Nikola.v.I.N.Okunev A.P.Onuchin S.B.Oreshkin I.O.Orlov A.A.Osipov S.v.Peleganchuk S.G.Pivovarov P.A.Piminov v.v.Petrov A.O.Poluektov I.N.Popkov v.G.Prisekin A.A.Ruban v.K.Sandyrev G.A.Savinov A.G.Shamov D.N.Shatilov B.A.Shwartz E.A.Simonov S.v.Sinyatkin Yu.I.Skovpen A.N.Skrinsky v.v.Smaluk a.v.Sokolov A.M.Sukharev E.v.Starostina A.A.Talyshev v.A.Tayursky v.I.Telnov Yu.A.Tikhonov K.Yu.Todyshev G.M.Tumaikin Yu.v.Usov A.I.vorobiov A.N.Yushkov v.N.Zhilich v.v.Zhulanov A.N.Zhuravlev Budker Institute of Nuclear Physics Novosibirsk State University Novosibirsk State Technical University 20Karl Marx prospectNovosibirsk630092Russia

We report results of experiments performed with the KEDR detector at the vEPP-4M e^＋e^- collider. They include precise measurement of the D^0 and D^± meson masses, determination of the ψ（3770） resonance parameter... 详细信息

关键词： D meson ψ(3770) mass narrow resonances

Measurement of J/ψ→η_cγ at KEDR

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2010年第6期34卷 831-835页

作者： v.v.Anashin v.M.Aulchenko E.M.Baldin A.K.Barladyan A.Yu.Barnyakov M.Yu.Barnyakov S.E.Baru I.v.Bedny O.L.Beloborodova A.E.Blinov v.E.Blinov a.v.bobrov v.S.bobrovnikov a.v.Bogomyagkov A.E.Bondar A.R.Buzyka.v.S.I.Eidelman Yu.M.Glukhovchenko v.v.Gulevich D.v.Gusev S.E.Karna.v.G.v.Karpov S.v.Karpov T.A.Kharlamova.v.A.Kiselev S.A.Kononov K.Yu.Kotov E.A.Kravchenko v.F.Kulikov G.Ya.Kurkin E.A.Kuper E.B.Levichev D.A.Maksimov v.M.Malyshev A.L.Maslennikov A.S.Medvedko O.I.Meshkov A.I.Milstein S.I.Mishnev I.I.Morozov N.Yu.Muchnoi v.v.Neufeld S.A.Nikitin I.B.Nikola.v.I.N.Okunev A.P.Onuchin S.B.Oreshkin I.O.Orlov A.A.Osipov S.v.Peleganchuk S.G.Pivovarov P.A.Piminov v.v.Petrov A.O.Poluektov I.N.Popkov G.E.Pospelov v.G.Prisekin A.A.Ruban v.K.Sandyrev G.A.Savinov A.G.Shamov D.N.Shatilov B.A.Shwartz E.A.Simonov S.v.Sinyatkin Yu.I.Skovpen A.N.Skrinsky v.v.Smaluk a.v.Sokolov A.M.Sukharev E.v.Starostina A.A.Talyshev v.A.Tayursky v.I.Telnov Yu.A.Tikhonov K.Yu.Todyshev G.M.Tumaikin Yu.v.Usov A.I.vorobiov A.N.Yushkov v.N.Zhilich v.v.Zhulanov A.N.Zhuravlev Budker Institute of Nuclear Physics Novosibirsk State University Novosibirsk State Technical University

We present a study of the inclusive photon spectra from 5.9 million J/ψ decays collected with the KEDR detector at the vEPP-4M e＋e collider. We measure the branching fraction of radiative decay J/ψ→ηcγ, ηc width and mass. Our preliminary results are： M（ηc） = 2979.4± 1.5 ± 1.9 Mev/c^2, Г（ηc） = 27.8±5.1 ±3.3 Mev, B（Jψ→ηcγ） = （2.34±0.15±0.40）%.

关键词： ηc meson full width mass radiative decay

在线全文

学校读者我要写书评

暂无评论

关于编制地震区建筑规范的一些问题

世界地震工程 1984年第6期 1-4+8页

作者： Polyakov S.v. bobrov F.v. Oiserman v.I. 赵林秀

前言苏联新规范СНИПⅡ-7-81在1981年6月由苏联全苏技术标准委员会批准。新规范从1982年起执行。新规范包括下面一些章节:(1)总则;(2)设计荷载;(3)住宅、公共建筑、厂房和构筑物;(4)运输方面的构筑物;(5)水工构筑物及附属设施。下面... 详细信息

前言苏联新规范СНИПⅡ-7-81在1981年6月由苏联全苏技术标准委员会批准。新规范从1982年起执行。新规范包括下面一些章节:(1)总则;(2)设计荷载;(3)住宅、公共建筑、厂房和构筑物;(4)运输方面的构筑物;(5)水工构筑物及附属设施。下面将阐述作者参加编写的前三章。

关键词：新规范地震烈度表烈度表构筑物设计地震烈度震中距地震基本参数建筑物加速度记录苏联苏维埃社会主义共和国联盟修正值编制

Petrology of the Maksyutov Eclogite Blueschist Complex, Southern Urals

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Continental Dynamics 2001年第2期6卷 9-16页

作者： A. A. MARAKUSHEv, A. v. bobrov, v. G. BUTvINA, SANG Longkang and LIU Rong Department of Petrology, Geological Faculty, Moscow State University vorob'evy Gory, Moscow, 119899, Russia Faculty of the Earth Sciences, China University of Geosciences, Wuhan, Department of Petrology Geological Faculty Moscow State University Vorob 'evy Gory Moscow 119899Russia Faculty of the Earth Sciences China University of Geosciences Wuhan 430074 P. R. China

The Maksyutov complex is a part of Precambrian folded belt extending from Urals, North Karakum, Kunlun, Qilian, Qinling to the Dabie-Sulu belt of eastern China. In Maksyutov the eclogites present as individual blocks and boudines embedded within the glaucophane and micaceous schists. Due to the Phanerozoic multi-phase granite intrusions and their resulting superposed metamorphism the data on the age of eclogite are diverse spanning from Early Proterozoic to lower Paleozoic. The mineral compositions of the eclogite are constant with garnet, omphacite and rutile; however, they are often replaced by metamorphic assemblages of epidote-blueschist facies. The garnets are iron rich with f=50-75 % (f = Fe2+/(Mg + Fe2+)). Clinopyroxenes are omphacites with Jd 40.3-52.2. According to the garnet-clinopyroxene geothermometry and Jadeite + quartz→albite geobarometry T=1060-686℃, P=2.23-1.416 GPa are estimated. The PT trajectory of Maksyutov eclogite corresponds to the upward intrusion of eclogite magma, the final consolidation of the eclogites probably took place in the lower crust.

关键词： eclogite blueschist Maksyutov complex Asia