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分析测试学报 2004年第3期23卷 100-102页

作者：刘力张惠宋铁珊曾玲力中国科学院新疆理化技术研究所新疆乌鲁木齐830011 新疆医科大学基础部新疆乌鲁木齐830000

采用水蒸气蒸馏的方法提取了阿育魏实挥发油 ,并利用气相色谱 -质谱联用技术对其化学成分做了分析 ,共鉴定出麝香草酚、p_伞花烃、萜品烯、α_崖柏烯、β_月桂烯和香芹酚等53个化合物。研究阿育魏实挥发油的成分 ,对民族药品质提升及原... 详细信息

采用水蒸气蒸馏的方法提取了阿育魏实挥发油 ,并利用气相色谱 -质谱联用技术对其化学成分做了分析 ,共鉴定出麝香草酚、p_伞花烃、萜品烯、α_崖柏烯、β_月桂烯和香芹酚等53个化合物。研究阿育魏实挥发油的成分 ,对民族药品质提升及原料的质量保证具有十分重要的意义。

关键词：挥发油成分阿育魏实气相色谱-质谱

Geochemistry of the Middle Dovenian Picritic Rocks of the South Margin of Altay Orogenic Belt: Implications for the Tectonic Setting and Petrogenesis

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Geochemistry of the Middle Dovenian Picritic Rocks of the So...

Chlorophyll in desiccated seeds of a euhalophyte, Suaeda physophora, and its significancy in plant adaptation to salinity during germination

火山作用与地球层圈演化——全国第四次火山学术研讨会

作者： Zhao Li~1 Zhang Zhaochong~(1,2. Yan Shenghao~3 Chen Bailin~4.Zhou Gang~5 HeYongkang~5 Chai Fengmei~2.He Lixin~5 1. State Key laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083 2. institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 3. institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037 4. institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081 5. No. 4.Geological Party, xinjiang Bureau of Geology and Resources, Aertai, xinjiang

＜正＞ The Altay orogenic belt, xinjiang Uygur Autonomous Region in NW China, represents one of the important sites of juvenile crustal growth during the Phanerozoic time. However, some important issues, e.g., tectonic evolution and petrogenesis, still remain controversial. Two layers of the picritic rocks in the south margin of the Altay orogenic belt, were discovered in the lower part of marine volcanic-sedimentary

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Science China(Life Sciences) 2008年第5期51卷 410-417页

作者： LI Yang1, ZHANG ShiRong1, SONG Jie2. WU ChenXi1, TIAN ChangYan3 & FENG Gu1 1 College of Resource and Environmental Science, China Agricultural University, Beijing 100094. China 2.College of Life Science, Shandong Normal University, Ji’nan 2.0014. China 3 {2. institute of Ecology and Geography, Chinese Academy of Sciences, urumqi 830000, China College of Resource and Environmental Science China Agricultural University Beijing China College of Life Science Shandong Normal University Ji’an China xinjiang institute of Ecology and Geography Chinese Academy of Sciences Urumqi China

The seed cotyledons of a euhalophyte, Suaeda physophora, were found to be dark green. The pigment extracted from the cotyledons was proved to be chlorophyll for the absorption spectra curve of extracts the same as that for leaves. Photosynthetic oxygen-exchanging could be detected after the seeds were moistened for 6 h. Microstructure of organelles in cotyledons of ungerminated seeds was detected by transmission electron microscopy. Histochemical pigmentation was used to investigate the degree of damage on the membrane of radicles. A xerophyte, Haloxylon persicum, whose cotyledons of desiccated seeds also contain chlorophyll was used as a comparative species. The results showed that S. physophora maintained the ultra-structure of chloroplasts, the integrity of plasma membranes of radicles kept much better than that of H. persicum, which showed the great adaptability to salinity of the euhalophyte even at the seed-germination stage. Seeds were incubated in 0 and 700 mmol/L NaCl for 10 days in darkness at 2. ℃ , then ungerminated seeds in NaCl solution were transferred to deionised water and reincubated for another 8 days and was recorded the germination recovery. Dry seeds moistened with deionised water germinated gradually in the dark and germination was maximal after 3 or 4.d. Seeds at 700 mmol/L NaCl for 10 d and transferred back to deionised water germinated abruptly, most seeds germinated in one day and photosynthesis was also detected. It is concluded that recovery germination of S. physophora ensured the seeds could germinate rapidly after salinity declines, for example under the mild but transitory favorable edaphic condition in early spring. Photosynthesis function in seeds might also promoted radicle growth and seedling establishment.

关键词： euhalophyte Suaeda physophora cotyledons of dessicated seed chlorophyll germination

饱和土地区不同直径盾构穿越既有隧道的理论研究

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中南大学学报（自然科学版） 2024年第4期55卷 1447-1462页

作者：丁智张默爆张霄魏新江申文明周俊宏浙大城市学院土木工程系浙江杭州310015 浙江省城市盾构隧道安全建造与智能养护重点实验室浙江杭州310015 浙江大学建筑工程学院浙江杭州310058 浙江省建筑设计研究院浙江杭州310006 中铁二院华东勘察设计有限责任公司浙江杭州310004 宁波市轨道交通集团有限公司浙江宁波315101

随着城市地铁隧道空间断面的多元化发展,既有隧道不可避免地面临不同直径盾构穿越的巨大风险。基于半无限饱和土初值解,考虑盾构机直径与类型,提出开挖面附加推力、盾壳摩擦力、盾尾注浆压力等施工参数的修正计算方法,推导出饱和软土地... 详细信息

随着城市地铁隧道空间断面的多元化发展,既有隧道不可避免地面临不同直径盾构穿越的巨大风险。基于半无限饱和土初值解,考虑盾构机直径与类型,提出开挖面附加推力、盾壳摩擦力、盾尾注浆压力等施工参数的修正计算方法,推导出饱和软土地区不同直径盾构穿越引起既有隧道竖向变形的计算公式。研究结果表明:相较于已有文献中计算方法,本文计算方法在预测饱和土大直径盾构穿越引起的既有隧道变形时更有优势。盾构斜穿既有隧道时纵向沉降槽会发生偏移,变形在盾构离开隧道轴线4.5倍盾构机长度后趋于稳定。不同类型盾构机开挖面稳定原理的差异性是影响计算结果的关键因素,考虑泥浆重度分布的开挖面附加推力比考虑挤土效应的开挖面附加推力对盾构直径变化更为敏感。

关键词：盾构隧道饱和土盾构穿越大直径开挖面

维普期刊数据库博看期刊

Summary of regional test of introduced high quality Agropyron varieties

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Summary of regional test of introduced high quality Agropyro...

Geographic Distribution and Evolution of Changxingian Ammonoid Faunas of South China

ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： Jia Nati~1,Guo xuanzheng~1,Li li~1,Cheng qiang~1,Li jie~2.1 Grass Industry research institute of Animal Science Academy of {2.,urumqi,830000 2.Sci.and Tech.Management and International Cooperation Department of Animal Science Academy of {2.,urumqi, 830000

＜正＞Materials and method Two cultivars of Agropyron cristatum cv.Tαγκγ????? and ???????????? and Agropyron mongolicum C"K were compared in an experiment located on Desert and Temperate Semi-Arid Steppe in xinjiang with *** trail design was randomized with three *** plot area was *** was on 2.April 2.05,with a row space was *** experiments were in different ecological *** drought hardiness and physiological ecology were appraised. using a 1-5 score（5 = drought hardy;l = drought ***）.Salt and alkali resistivity was evaluated using 1.0,1.5,2.0 and 2.5%NaCl solution to germinate seeds.

关键词： varietyintroduclion forage quality perennial grasses regional test

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Acta Geologica Sinica(English Edition) 1986年第4期 1-11页

作者： Yang Fengqing Wuhan College of Geology, Wuhan, Hubei Province Zhang Yijie institute of Geological Exploration and Development, xinjiang Petroleum Administration, {2., xinjiang

Changxingian ammonoids are well developed in South China, including 154.species, 33 genera and 11 families. They are mainly distributed in the southern and northern subprovinces of the South China province but are rare in the middle. According to the development of the ammonoid zone and lithologic characteristics, the two subprovinces are subdivided into six endemic areas. The above-mentioneddistribution is controlled by such factors as palaeogeographic environment and sedimentary *** evolution of Changxingian ammonoids of South China is characterized by distinct evolutionary stages, and the whole evolutionary history of ammonites consists of alternate episodes of"explosive" radiation, slow and steady evolution and mass extinction. The alternation of mass extinction and"explosive" radiation usually occur at the boundaries of stages(or substages)."Explosive" radiation refers to rapid proliferation of new species(or genera) within a very short geologically negligeable period of time. The origin of species can be well explained by the concept of punctuated equilibria--a new concept of evolution. Mass extinction refers to rapid, large-scale demise of taxa within a very short period of time. The cause of such an extinction might be due to the inevitable replacement of the old forms by rapidly developing new ones and the environmental changes, in addition to the global sea-level changes, extraterrestrial impacts and geomagnetic reversal.

关键词： Geographic Distribution and Evolution of Changxingian Ammonoid Faunas of South China

Moxibustion　Combined　with　Penetrating　Needling　for　Treatment　of　30　Cases　of　Peripheral　Facial　Paralysis

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中国针灸 1995年第S2期15卷 308-309页

作者： Zhang Guixiang(xinjiang institute of Traditional Chinese Medicine)

ＭｏｘｉｂｕｓｔｉｏｎＣｏｍｂｉｎｅｄｗｉｔｈＰｅｎｅｔｒａｔｉｎｇＮｅｅｄｌｉｎｇｆｏｒＴｒｅａｔｍｅｎｔｏｆ３０ＣａｓｅｓｏｆＰｅｒｉｐｈｅｒａｌＦａｃｉａｌＰａｒａｌｙｓｉｓ￥ＺｈａｎｇＧｕｉｘｉａｎｇ（Ｘｉｎ... 详细信息

ＭｏｘｉｂｕｓｔｉｏｎＣｏｍｂｉｎｅｄｗｉｔｈＰｅｎｅｔｒａｔｉｎｇＮｅｅｄｌｉｎｇｆｏｒＴｒｅａｔｍｅｎｔｏｆ３０ＣａｓｅｓｏｆＰｅｒｉｐｈｅｒａｌＦａｃｉａｌＰａｒａｌｙｓｉｓ￥ＺｈａｎｇＧｕｉｘｉａｎｇ（ＸｉｎｊｉａｎｇｉｎｓｔｉｔｕｔｅｏｆＴ...

关键词： Cases Combined

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提高测井曲线纵向分辨率的小波变换技术

新疆石油地质 2004年第5期25卷 529-531页

作者：冯国庆杨琨陈忠强沈勇伟西南石油学院石油工程学院四川成都610500 中国石油新疆油田分公司勘探开发研究院新疆克拉玛依834000 中国石油新疆石油管理局测井公司新疆克拉玛依834000 中国石油新疆油田分公司采油二厂新疆克拉玛依834000

小波变换是一种能同时在时间域和频率域内进行局部化信号分析的新方法,且时间域分辨率可随尺度因子的增大而提高,其主要优点在于它在时间域和频率域都有良好的局部化性质,可以聚集到信号的任意细节。利用该特点采用Mallat方法可对测井... 详细信息

小波变换是一种能同时在时间域和频率域内进行局部化信号分析的新方法,且时间域分辨率可随尺度因子的增大而提高,其主要优点在于它在时间域和频率域都有良好的局部化性质,可以聚集到信号的任意细节。利用该特点采用Mallat方法可对测井曲线进行分解和重构,重构后的测井曲线可以提高纵向分辨率。该方法与反褶积方法比较,小波变换后的测井曲线更能反应细节信息,具有更高的纵向分辨率。

关键词：小波变换测井曲线纵向分辨率分解重构

基于概率信息与协作学习的鲁棒T-S模糊建模方法

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天津大学学报（自然科学与工程技术版） 2024年第1期57卷 87-94页

作者：江敏吴鸿云柏昀旭陆新江陈秉正中南大学机电工程学院长沙410083 长沙矿山研究院有限责任公司长沙410012 国家金属采矿工程技术研究中心长沙410012 天津大学机械工程学院天津300072

T-S模糊建模方法在非线性系统建模中取得了大量的应用.然而,T-S模型在参数辨识过程中忽略了结构风险项,同时没有考虑各个规则之间的联系,因此在数据受到非高斯噪声和异常点的影响时,模型容易失效.针对以上不足,提出了基于概率信息与协... 详细信息

T-S模糊建模方法在非线性系统建模中取得了大量的应用.然而,T-S模型在参数辨识过程中忽略了结构风险项,同时没有考虑各个规则之间的联系,因此在数据受到非高斯噪声和异常点的影响时,模型容易失效.针对以上不足,提出了基于概率信息与协作学习的模糊建模方法.该方法建立了规则之间协作学习机制以保证模型的连续性、平滑性与鲁棒性,并进一步构建了包含正则化项、误差项、规则概率信息及规则之间协作关系项的目标函数,用于提高模型的泛化能力和建模性能.除此之外,建立了空间投影机制,将数据低维特征空间的非线性关系转换为高维投影空间的线性关系,以增强规则之间的协作性.针对该模型,建立了基于最小二乘的求解方法,获得了可靠的模型参数.数学算例仿真和实际锻压实验表明:所提出的方法在面对噪声以及强非线性影响时,依然能在规则数较低的情况下保持优秀的建模性能.对比其他优秀的模糊建模方法,该模型有着更强的抗干扰能力,且建模均方根误差(RMSE)远低于其他建模方法.综上所述,所提出的方法对传统方法和建模理论进行了改进,即使面对强非线性系统拥有较强的泛化能力、鲁棒性以及优秀的建模能力,并且能够以较少的模糊规则对工程当中非线性、不确定性系统建模.

关键词：模糊建模概率信息协作学习噪声鲁棒性