|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Origin and phylogenetic analysis of Tibetan Mastiff based on the mitochondrial DNA sequence显示文摘At present,the Tibetan Mastiff is the oldest and most ferocious dog in the world. However,the origin of the Tibetan Mastiff and its phylogenetic relationship with other large breed dogs such as Saint Bernard are unclear. In this study,the primers were designed accord-ing to the mitochondrial genome sequence of the domestic dog,and the 2,525 bp mitochondrial sequence,containing the whole sequence of Cytochrome b,tRNA-Thr,tRNA-Pro,and control region of the Tibetan Mastiff,was obtained. Using grey wolves and coyotes as out-groups,the Tibetan Mastiff and 12 breeds of domestic dogs were analyzed in phylogenesis. Tibetan Mastiff,domestic dog breeds,and grey wolves were clustered into a group and coyotes were clustered in a group separately. This indicated that the Tibetan Mastiff and the other domestic dogs originated from the grey wolf,and the Tibetan Mastiff belonged to Carnivora,Canidae,Canis,Canis lupus,Canis lupus familiaris on the animal taxonomy. In domestic dogs,the middle and small breed dogs were clustered at first; German Sheepdog,Swedish Elkhound,and Black Russian Terrier were clustered into one group,and the Tibetan Mastiff,Old English Sheepdog,Leonberger,and Saint Bernard were clustered in another group. This confirmed the viewpoint that many of the famous large breed dogs worldwide such as Saint Bernard possibly had the blood lineage of the Tibetan Mastiff,based on the molecular data. According to the substitution rate,we concluded that the approximate divergence time between Tibetan Mastiff and grey wolf was 58,000 years before the present (YBP),and the approximate divergence time between other domestic dogs and grey wolf was 42,000 YBP,demonstrating that the time of origin of the Tibetan Mastiff was earlier than that of the other domestic dogs. | Qifa Li Zhenshan Liu Yinxia Li Xingbo Zhao Liyan Dong Zengxiang Pan Yuanrong Sun Ning Li Yinxue Xu Zhuang Xie | 2008 | Journal of Genetics and Genomics2008，35，6： | 15 |
| 2 | SIX SIGMA OPTIMIZATION IN SHEET METAL FORMING BASED ON DUAL RESPONSE SURFACE MODEL显示文摘在为形成过程的表金属的优化和数字模拟的重复可以导致广泛的计算。另外,在材料的不确定性或处理参数可以在设计质量上有大影响。六个西格马优化方法被建议,由联合双反应表面方法(DRSM ) 和六西格马哲学,到节省计算费用并且改进部分的可靠性和坚韧性。用这个方法,统计技术包括实验的设计和变化的分析,近似模型和六西格马哲学在一起是综合的完成改进质量。形成过程的二表金属作为例子被提供说明建议方法。 | LI Yuqiang CUI Zhenshan ZHANG Dongjuan RUAN Xueyu CHEN Jun | 2006 | Chinese Journal of Mechanical Engineering2006，19，2： | 12 |
| 3 | b-DAZL:A novel gene in bovine spermatogenesis显示文摘DAZL 基因在 gametogenesis 起一个重要作用。这基因的 Microdeletion 和变化经常在脊椎动物和无脊椎动物与绝育被联系了。这里,包含 DAZL 基因的完全的开的读物框架的 cDNA,它编码通常认为的 RRM RNA 有约束力的蛋白质,被 RT-PCR 从牛的纸巾孤立。孤立的基因被叫作 b-DAZL。基于计算机的地点分析证明 b-DAZL 在染色体 1 的结束附近被定位。b-DAZL 基因和它的脊椎动物相当或相同事物分享了高核苷酸类似(90 94%) 在编码区域并且在 genomic 组织,每由 10 前 ons 和 9 introns 组成。他们的蛋白质产品包含了一个高度保存的 RNA 有约束力的主题,一次唯一的 DAZ 重复,和 PUM2 和 PABP 交往领域。RT-PCR 试金表明 b-DAZL 在睾丸和卵巢被表示。然而,没有信号在无菌的雄的牛牦牛的睾丸被检测。不育的男性的睾丸的微观结构显示出很少的 spermatocytes 但是主要体的房间。这些观察与有有缺点的 DAZL 表示的睾丸的典型显型一致。随后的基因察觉研究显示那抄写拘捕可能在牛牦牛的睾丸导致一个 b-DAZL 抄本缺点。我们的结果建议 b-DAZL 可以涉及精子发生,并且基因的那抄写拘捕在牛牦牛与男绝育被联系。 | Qingbo Zhang Qifa Li Jiahuang Li Xinfu Li Zhenshan Liu Dawei Song Zhuang Xie | 2008 | Progress in Natural Science:Materials International2008，18，10： | 6 |
| 4 | Analysis of IGF2 mRNA expression and its methylation status between cattle yaks and their parents显示文摘Cattle yaks are an F1 hybrid between cattle and yaks and exhibit significant hybrid vigor. However, cattle yaks are sterile males. To study the epigenetic aspects of this reproductive isolation, IGF2 mRNA expression in cattle yaks and their parents and the patterns of the IGF2 differentially methylated regions (DMR) were examined in blood and testes. The results showed that IGF2 expression in cattle yaks' testes was lower than in their parents (P < 0.01). The IGF2 DMR was highly methylated (above 90%) in blood and testes of cattle yaks, yaks and cattle, with the highest level in cattle yaks (P > 0.05). Our study showed that IGF2 plays an important role in bovine spermato-genesis and might be involved in cattle-yak male sterility. The methylation level of the IGF2 DMR was irrelevant to the lower expression of IGF2 in cattle yaks; other factors perhaps play roles in its expression. | Zhenshan Liu Qifa Li Qingbo Zhang Xuguang Qu Liyan Dong Chamba Yang-zom Zhuang Xie Honglin Liu | 2009 | Progress in Natural Science:Materials International2009，19，9： | 5 |
| 5 | Zanthoxylum-specific whole genome duplication and recent activity of transposable elements in the highly repetitive paleotetraploid Z.bungeanum genome显示文摘Zanthoxylum bungeanum is an important spice and medicinal plant that is unique for its accumulation of abundant secondary metabolites,which create a characteristic aroma and tingling sensation in the mouth.Owing to the high proportion of repetitive sequences,high heterozygosity,and increased chromosome number of Z.bungeanum,the assembly of its chromosomal pseudomolecules is extremely challenging.Here,we present a genome sequence for Z.bungeanum,with a dramatically expanded size of 4.23 Gb,assembled into 68 chromosomes.This genome is approximately tenfold larger than that of its close relative Citrus sinensis.After the divergence of Zanthoxylum and Citrus,the lineage-specific whole-genome duplication event q-WGD approximately 26.8 million years ago(MYA)and the recent transposable element(TE)burst~6.41 MYA account for the substantial genome expansion in Z.bungeanum.The independent Zanthoxylum-specific WGD event was followed by numerous fusion/fission events that shaped the genomic architecture.Integrative genomic and transcriptomic analyses suggested that prominent speciesspecific gene family expansions and changes in gene expression have shaped the biosynthesis of sanshools,terpenoids,and anthocyanins,which contribute to the special flavor and appearance of Z.bungeanum.In summary,the reference genome provides a valuable model for studying the impact of WGDs with recent TE activity on gene gain and loss and genome reconstruction and provides resources to accelerate Zanthoxylum improvement. | Shijing Feng Zhenshan Liu Jian Cheng Zihe Li Lu Tian Min Liu Tuxi Yang Yulin Liu Yonghong Liu He Dai Zujun Yang Qing Zhang Gang Wang Jisen Zhang Huifeng Jiang Anzhi Wei | 2021 | Horticulture Research2021，8，1： | 5 |
| 6 | Molecular Fingerprints of Soil Organic Matter in a Typical Freshwater Wetland in Northeast China显示文摘Natural wetlands are known to store huge amounts of organic carbon in their soils. Despite the importance of this storage,uncertainties remain about the molecular characteristics of soil organic matter(SOM), a key factor governing the stability of soil organic carbon(SOC). In this study, the molecular fingerprints of SOM in a typical freshwater wetland in Northeast China were investigated using pyrolysis gas-chromatography/mass-spectrometry technology(Py-GC/MS). Results indicated that the SOC, total nitrogen(TN),and total sulfur contents of the cores varied between 16.88% and 45.83%, 0.93% and 2.82%, and 1.09% and 3.79%, respectively. The bulk δ^13C and δ^15N varied over a range of 9.85‰, between –26.85‰ and –17.00‰, and between –0.126‰ and 1.002‰, respectively. A total of 134 different pyrolytic products were identified, and they were grouped into alkyl(including n-alkanes(C:0) and n-alkenes(C:1),aliphatics(Al), aromatics(Ar), lignin(Lg), nitrogen-containing compounds(Nc), polycyclic aromatic hydrocarbons(PAHs), phenols(Phs), polysaccharides(Ps), and sulfur-containing compounds(Sc). On average, Phs moieties accounted for roughly 24.11% peak areas of the total pyrolysis products, followed by Lg(19.27%), alkyl(18.96%), other aliphatics(12.39%), Nc compounds(8.08%), Ps(6.49%), aromatics(6.32%), Sc(3.26%), and PAHs(1.12%). Soil organic matter from wetlands had more Phs and Lg and less Nc moieties in pyrolytic products than soil organic matters from forests, lake sediments, pastures, and farmland.δ^13 C distribution patterns implied more C3 plant-derived soil organic matter, but the vegetation was in succession to C4 plant from C3 plant. Significant negative correlations between Lg or Ps proportions and C3 plant proportions were observed. Multiple linear analyses implied that the Ar and Al components had negative effects on SOC. Alkyl and Ar could facilitate ratios between SOC and total nitrogen(C/N), while Al plays the opposite role. Al was positively related to the ratio of dissolved organic carbon(DOC) to SOC. In summary, SOM of wetlands might characterize by more Phs and lignin and less Nc moieties in pyrolytic products. The use of Pyrolysis gas-chromatography/mass-spectrometry(Py-GC/MS) technology provided detailed information on the molecular characteristics of SOM from a typical freshwater wetland. | LI Zhe ZHANG Zhongsheng XUE Zhenshan SONG Xiaolin ZHANG Hongri WU Haitao JIANG Ming LYU Xianguo | 2019 | Chinese Geographical Science2019，29，4： | 4 |
| 7 | xperimental investigation on cumulative propagation of thin film buckling under cyclic load显示文摘As instrument technology is needed for rapid determination of the smaller,thinner and lighter specimens,more stringent demands are related to thin films such as micro-electro-mechanical systems(MEMS),dielectric coatings and electronic packaging.Therefore,the requirement for testing platforms for rapidly determine the mechanical properties of thin films is increasing.Buckling of a film/substrate system could offer a variety of applications,ranging from stretchable electronics to micro-nanoscale metrology.In this paper,a fatigue-loading device has been designed to make the cyclic loading available for investigating the cumulative propagation of thin film buckling.The straight side buckling of thin compressed titanium film with the thickness of 50 nm deposited on organic glass substrates is investigated by using an optical microscope.The cumulative buckling propagation under the cyclic loading of a sequence of peak compression with the frequency 1 Hz is recorded by CCD camera.The buckling extension lengths are calculated by digital image measurement technology. | WANG ShiBin JIA HaiKun LI LinAn SUN Heng CUI DiQiang GUO ZhenShan XUE XiuLi | 2011 | Science China(Technological Sciences)2011，54，6： | 4 |
| 8 | Catalytic hydrogenation of aromatic nitro compounds by functionalized ionic liquids-stabilized nickel nanoparticles in aqueous phase:The influence of anions显示文摘Two kinds of nickel nanoparticles (NPs) well-dispersed in aqueous phase have been conveniently prepared by reducing nickel(II) salt with hydrazine in the presence of amino group (-NH2) functionalized ionic liquids:1-(3-aminopropyl)-2,3-dimethylimidazolium bromide ([AMMIM][Br]) and 1-(3-aminopropyl)-2,3-dimethylimidazolium acetate ([AMMIM][AcO]).The Ni(0) particles are composed of smaller ones which assemble in a blackberry-like shape.The Ni nanoparticles stabilized with [AMMIM][AcO] are much larger than those stabilized with [AMMIM][Br],and the former unexpectedly give much higher activity in the selective hydrogenation of citral and nitrobenzene (NB) in aqueous phase.The Ni(0) nanocatalysts dispersed in aqueous phase are stable enough to be reused at least five times without significant loss of catalytic activity and selectivity during the catalytic recycles. | HU Yu YU YinYin ZHAO XiuGe YANG HanMing FENG Bo LI Huan QIAO YunXiang HUA Li PAN ZhenYan HOU ZhenShan | 2010 | Science China Chemistry2010，53，7： | 3 |
| 9 | Mechanism of combination membrane and electro-winning process on treatment and remediation of Cu^(2+) polluted water body显示文摘Mechanism of treatment and remediation of synthetic Cu2+ polluted water body by membrane and electro-winning combination process was investigated.The influences of electrolysis voltage,pH,and electrolysis time on the metal recovery effciencies were studied.Relationship between trans-membrane pressure drop(△P),additions ratio,initial Cu2+ concentration on operating effciency,stability of membrane and the possibility of water reuse were also investigated.The morphology of membrane and electrodes were observed using scanning electron microscopy(SEM),the composition of surface deposits was ascertained using combined energy dispersive X-ray spectroscopy(EDX) and atomic absorption spectrophotometer.The results showed that using low pressure reverse osmosis(LPRO),Cu2+ concentration could increase from 20 to 100 mg/L or even higher in concentrated solutions and permeate water conductivity could be less than 20 μS/cm.The addition of sodium dodecy/sulfate sodium dodecyl sulfate improved Cu2+ removal effciency,while EDTA had little side influence.In electro-reduction process,using plante electrode cell,Cu2+ concentration could be further reduced to 5 mg/L,and the average current effciency ranged from 9% to 40%.Using 3D electrolysis treatment,Cu2+ concentration could be reduced to 0.5 mg/L with a current effciency range 60%-70%. | ZHANG Linnan WU Yanjun QU Xiaoyan LI Zhenshan NI Jinren | 2009 | Journal of Environmental Sciences2009，21，6： | 3 |
| 10 | Characteristic of solid product layer of MgSO in the reaction of MgO with SO2显示文摘The microstructure, nucleation and growth of MgSO4 product layer during the reaction of MgO single crystal with SO2 and O2 were investigated with thermo gravity analyzer (TGA) and atomic force microscopy (AFM). The AFM images indicated that three dimensional islands with different sizes were formed during the initial reaction stage. At the initial stage, cone-shaped islands were formed, and most of them appeared at the position with terrace-step-kink. With the reaction time increasing, small islands would grow to large islands, and the coalescent would happen during this growth stage. During the product layer growth stage, the space and surface between islands would be occupied by islands, and continuum islands were formed. With the reaction time increasing in the product layer growth stage, the size of island increased while the number and total surface of all islands decreased. | LI ZhenShan, FANG Fan & CAI NingSheng Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China | 2010 | Science China(Technological Sciences)2010，53，7： | 2 |
| 11 | The spatiotemporal changes of marshland and the driving forces in the Sanjiang Plain, Northeast China from 1980 to 2016显示文摘Background:Wetland loss is a global concern due to its enormous ecosystem services.Marshland,a typical natural wetland,which is concentrated in the Sanjiang Plain,has undergone dramatic loss in the last several decades.The spatiotemporal changes in marshland were studied based on Landsat images of the Sanjiang Plain from 1980 to 2016 with the land use maps in 1980,1995,2000,2005,2010,and 2016 using land use dynamic degree and landscape indices.The driving forces of marshland loss,including biophysical factors,socio-economic factors,and land management,were analyzed with boosted regression trees(BRTs)methods.Results:The area of marshland loss was 7372 km^(2),which accounted for 65.7%of the area of marshland in 1980;however,the paddy field area was expanded by 22,313 km^(2).The lost marshland was mainly converted to dry farmland(47.5%)and paddy field(47.2%)during 1980-2016.Both the landscape pattern of the study area and marshland became increasingly fragmented.The relatively important factors responsible for marshland loss were biophysical factors,socio-economic factors,and land management,which accounted for 65.2%,25.5%,and 8.4%,respectively.The most important driving forces with high“relative influence”were“distance to river,”which accounted for 20.6%of the total variance explained.The“relative influence”of potential crop yield and ditch density reached 20.2%and 8.4%,respectively.Conclusion:Significant land use changes have occurred in the Sanjiang Plain over the past 37 years,with characteristics of rapid paddy field expansion and drastic marshland loss.Meanwhile,marshland fragmentation continued to increase.Reclamation was the main reason for the large-scale marshland loss.Biophysical factors influenced the decisions regarding the locations of marshland loss.Moreover,climate factors(i.e.,average annual precipitation and average annual temperature)also played an important role in marshland loss.These results can provide helpful knowledge for understanding the patterns and reasons for marshland loss and protecting and managing strategies for wetlands restoration. | Zhen Li Miao Liu Yuanman Hu Zhenshan Xue Jinling Sui | 2020 | Ecological Processes2020，9，1： | 2 |
| 12 | Experiment and modeling of CO2 capture from flue gases at high temperature in fluidized bed reactor with Ca-based sorbents显示文摘 | Fang Fan Li Zhenshan Cai Ningsheng | 2009 | Energy & Fuels2009，23，1： | 1 |
| 13 | Con- tinuous test of ilmenite-based oxygen carriers for chemi- cal looping combustion in a dual fluidized bed reactor system 显示文摘 | Bao Jinhua Li Zhenshan Sun Hongming | 2013 | Industrial & Engineering Chemistry Re- search2013，52，14： | 1 |
| 14 | Ultrasound-assisted extraction of oil from flaxseed显示文摘 | Zhang Zhenshan Jun Wanli Dong Li | 2008 | Separation and Purification Technology2008，62，： | 1 |
| 15 | An analytical model for predicting springback and side wall curl of sheet after U-bending 显示文摘 | Zhang Dongjuan Cui Zhenshan Ruan Xueyu Li Yuqiang | 2007 | Computational Materials Sciences2007，38，4： | 1 |
| 16 | Synthesis, experimental studies, and analysis of a new calciumbased carbon dioxide sorbent显示文摘 | Li Zhenshan Cai Ningsheng Huang Yuyu | 2005 | Energy Fuels2005，19，4： | 1 |
| 17 | Continuous CO2 capture from flue gases using a dual fluidized bed reactor with Ca-based sorbent显示文摘 | FANG Fan LI Zhenshan CAI Ningsheng | 2009 | Industrial & Engineering Chemistry Research2009，48，11： | 1 |
| 18 | 显示文摘 | Liu Juan Cui Zhenshan Li Congxing | 2008 | Computational Materials Science2008，41，： | 1 |
| 19 | Process analysis of CO2 capture from flue gas using carbonation/calcination cycles显示文摘 | Li Zhenshan Cai Ningsheng Croiset E | 2008 | AIChE Journal2008，54，7： | 1 |
| 20 | Experiment and modeling of CO2 capture from flue gases at high temperature in fluidized bed reactor with ca-based sorbents显示文摘 | Fang Fan Li Zhenshan Cai Ningsheng | 2009 | Energy & Fuels2009，23，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员