|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Implications for rock instability precursors and principal stress direction from rock acoustic experiments显示文摘The characteristics of rock instability precursors and the principal stress direction are very crucial for the prevention of geological disasters.This study investigated the qualitative relationship between rock instability precursors and principal stress direction through wave velocity in rock acoustic emission(AE)experiments.Results show that the wave velocity variation exhibits obvious anisotropic characteristics in 0%–20%and 60%–90%of peak strength due to the differences of stress-induced microcrack types.The amplitude of wave velocity variation is related to the azimuth and position of wave propagation path,which indicates that the principal stress direction can be identified by the anisotropic characteristics of wave velocity variations.Furthermore,the experiments also demonstrate that the AE event rate and wave velocity show quiet and stable variations in the elastic stage of rock samples,while they present a trend of active and unstable variations in the plastic stage.It implies that both the AE event rate and wave velocity are effective monitoring parameters for rock instability.The anisotropic characteristics of the wave velocity variation and AE event rate are beneficial complements for identifying the rock instability precursors and determining the principal stress direction,which provides a new analysis method for stability monitoring in practical rock engineering. | Longjun Dong Yongchao Chen Daoyuan Sun Yihan Zhang | 2021 | International Journal of Mining Science and Technology2021，31，5： | 10 |
| 2 | Geographical genetic diversity and divergence of common wild rice (O. rufipogon Griff.) in China显示文摘Using 36 SSR markers and 889 accessions of common wild rice in China, the genetic diversity and the divergence among different geographical populations are investigated. Guangdong Province has the largest number of alleles, which account for 84% of the total alleles detected in the study, followed by Guangxi Province. The Nei's gene diversity indices, from high to low, are in the sequence of Hainan, Guangdong, Guangxi, Fujian, Hunan, Jiangxi, and Yunnan provinces. Two genetic diversity centers of Chinese common wild rice are detected on the basis of geographic analysis, i.e., the region covering Boluo, Zijin, Lufeng, Haifeng, Huidong and Huiyang counties of Guangdong Province and the region covering Yongning, Longan, Laibin and Guigang counties of Guangxi Province. The common wild rice in Yunnan, Hunan, Jiangxi, and Fujian provinces are diverged into respectively independent populations with relatively large genetic distances, whereas, those in Hainan, Guangdong and Guangxi provinces have relatively low genetic divergence. Under the condition of geographic separation, natural selection is considered as one of the primary forces contributing to the divergence of common wild rice in China. | WANG MeiXing ZHANG HongLiang ZHANG DongLing PAN DaJian LI DaoYuan FAN ZhiLan QI YongWen SUN JunLi YANG QingWen LI Chen LI ZiChao | 2008 | Chinese Science Bulletin2008，53，22： | 8 |
| 3 | Phenotypic plasticity in response to soil moisture availability in the clonal plant Eremosparton songoricum (Litv.) Vass.显示文摘Eremosparton songoricum(Litv.) Vass is a dwarf clonal shrubby legume developed on the windward slopes of mobile or semi-fixed sand dunes of Central Asia. It is assumed that E. songoricum must possess a high degree of phenotypic plasticity for such a heterogeneous habitat. The variations of E. songoricum plants growing in two typical microhabitats(the upper slope and the lower slope of semi-mobile dune) were investigated. The morphological characteristics and the biomass allocation patterns were measured and compared at the clonal fragment level. Compared with the clonal fragment on the lower slope of dune,the clonal fragment on the upper slope of the dune(a) declined in total biomass and ramet height,(b) increased the length of rhizomes and the number of roots,(c) increased the degree of asym-metry,and(d) heightened allocation to the belowground biomass. Our results confirmed the hypothesis of high phenotypic adjustment capacity of E. songoricum to habitat moisture availability. Phenotypic plasticity of E. songoricum contributed to reduce the damage risk,led to an environmentally induced specialization in function of resources exploitation,resulted in its persistence in heterogeneous environments and was adaptive in sand dune environment. | JianCheng WANG Xiang SHI DaoYuan ZHANG LinKe YIN | 2011 | Journal of Arid Land2011，3，1： | 6 |
| 4 | Fine-scale genetic structure of Eremosparton songoricum and implication for conservation显示文摘Eremosparton songoricum (Litv.) Vass. is a clonal shrub that reproduces both asexually by under-ground rhizomes and sexually by seeds. It is now a rare species with a narrow distribution in fragmented habitat patches in the Gurbantunggut Desert of Xinjiang, China. The objective of this study was to determine the spatial pattern or structure of genetic variation within population. The within-populations genetic structure of E. songoricum in a plot (10 m×10 m) was analyzed using inter simple sequence repeats (ISSR) markers. Correlograms of Moran's I showed significant positive value was about 7 m, but changed into a negative correlation with the increase of distance, indicating strong genetic structure. The natural character of clonal reproduction, restricted seed and pollen dispersal were the main factors of influencing the spatial pattern. The knowledge of clonal structures within populations was crucial for understanding evolutionary processes and ecological adaptation. This study provided basic data for the conservation and management of E. songoricum, especially for sampling strategies for ex situ conservation. | Liu, Yan Zhang, DaoYuan Yang, HongLan Liu, MeiYing Shi, Xiang | 2010 | Journal of Arid Land2010，2，1： | 6 |
| 5 | Effect of water deficiency on relationships between metabolism,physiology,biomass,and yield of upland cotton(Gossypium hirsutum L.)显示文摘Drought is a common abiotic stress that considerably limits crop production. The objective of this study is to explore the influence of water deficiency on the yield, physiologic and metabolomic attributes in upland cotton cultivars(Gossypium hirsutum L). Cotton cultivars, 'Ishonch' and 'Tashkent-6' were selected to study the relationships among their physiologic, metabolomic and yield attributes during water deficiency. Deficit irrigation was designed by modifying the traditional watering protocol to reduce water use. Results indicate that cotton cultivars respond differently to water deficit stress. Water deficit significantly influenced plant height, the number of internodes, and sympodial branches in both cultivars. However, yield components such as the number of bolls, boll seed, lint mass, and individual plant yield were significantly reduced only in 'Tashkent-6'. The leaf area decreased and the specific leaf weight increased in 'Ishonch' under deficit irrigation conditions. However, 'Tashkent-6' demonstrated significant water loss compared to 'Ishonch', and both cultivars showed reduced transpiration rates. Untargeted metabolite profiles of leaves showed clear separation in 'Ishonch', but not in 'Tashkent-6' under deficit irrigation compared to full irrigation. The individual metabolites such as proline and galactinol showed strong association with yield under water deficit stress. Moreover, this study indicates that leaf area and transpiration intensity influence yield during water deficiency. In summary, the correlation among morpho-physiologic, metabolic, and yield components significantly varied between the two cultivars under water deficiency. The flowering stage was sensitive to water stress for both cultivars. The direct relationship between physiology, metabolism, and yield may be a useful selection criterion for determining candidate parents for cotton drought tolerance breeding. | Tohir A BOZOROV Rustam M USMANOV YANG Honglan Shukhrat A HAMDULLAEV Sardorbek MUSAYEV Jaloliddin SHAVKIEV Saidgani NABIEV ZHANG Daoyuan Alisher A ABDULLAEV | 2018 | Journal of Arid Land2018，10，3： | 5 |
| 6 | Quantitative classification and analysis on plant communities in the middle reaches of the Tarim River显示文摘Plant communities were sampled in the lower reaches of the Tarim River, Xinjiang. The results showed that there are 23 species belonging to 21 genera in 11 families, most of which have low occurrence frequency in quadrats. The most common species is Tamarix ramosissima, which occurred in 17 sites accounting for 89.47% of the total 19 sites. Quantitative classification (TWINSPAN) and ordination (CCA) methods were used to study the distribution patterns of 23 plant species in 19 sites in this valley. TWINSPAN results showed that the plant communities in the middle reaches of the Tarim River could be divided into 3 groups and the sampling sites could be divided into 7 types in 3 groups. CCA results were consistent with TWINSPAN results, and showed species distribution patterns correlated with major environmental variables of groundwater level and soil moisture. | ZHANG Yuanming,CHEN Yaning,ZHANG Daoyuan(Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China) | 2003 | Journal of Geographical Sciences2003，13，2： | 5 |
| 7 | Effects of temperature and light on seed germination of ephemeral plants in the Gurbantunggut Desert, China: implications for vegetation restoration显示文摘Seed germination is a key transitional stage in plant life cycle and is strongly regulated by temperature and light.Therefore, research on the effects of temperature and light on seed germination is extremely meaningful for vegetation restoration, especially in desert ecosystems.Seeds of 28 ephemeral plants collected from the Gurbantunggut Desert of China were incubated at different temperatures(5℃/1℃, 15℃/5℃, 20℃/5℃, 25℃/10℃ and 30℃/15℃) in 12-h light/12-h darkness or continuous darkness regimes, and the responses of seed germination to temperature and light and the germination speed were studied in 2016.Results showed that seed germination percentage of the 28 ephemeral plants significantly differed to temperature and light.We classified the studied plants as the following groups based on their responses to temperature: 1 low temperature responsed plants, 12 moderate temperature responsed plants, 7 high temperature responsed plants, 4 non-responsed plants and 5 plants of no germination.It should be noted that Corispermum lehmannianum Bunge is sensitive to both moderate and high temperatures.There were 4 groups of plant in response to light, i.e., 7 light responsed plants, 10 dark responsed plants, 6 light non-responsed plants and 5 plants of no germination.Based on seed germination speed of the 28 ephemeral plants, we divided them into 4 patterns of germination, i.e., very rapid, moderately rapid, moderate and slow.Combining variations of temperature, precipitation and sand dune types in the study area, we suggested that very rapid and moderately rapid germinated plants could be used to moving sand dunes in early spring during vegetation restoration, moderate germinated plants could be used to semi-fixed sand dunes in late autumn, and slow germinated plants could be used to sand plain in summer.Thus, seedling establishment and vegetation restoration would be improved by considering seed germination characteristics of these ephemeral plants in the Gurbantunggut Desert, China. | CHEN Yanfeng CAO Qiumei LI Dexin LIU Huiliang ZHANG Daoyuan | 2019 | Journal of Arid Land2019，11，6： | 4 |
| 8 | Simultaneous degradation of RhB and reduction of Cr(Ⅵ) by MIL-53(Fe)/Polyaniline(PANI) with the mediation of organic acid显示文摘MIL-53(Fe)/polyaniline(PANI) composite was prepared by in situ depositing PANI on the surface of MIL-53(Fe) and their catalytic performances on the simultaneous removal of Rh B and Cr(Ⅵ) were investigated. The elimination efficiency of both RhB and Cr(Ⅵ) reached more than 98% under pH = 2 where hydrochloric acid and citric acid were used to adjust the pH. The results indicated that MIL-53(Fe)/PANI revealed an obvious pH response to the degradation of RhB, while citric acid promoted the Cr(Ⅵ)photoreduction. UV–Vis spectra, EIS, and photocurrent response experiments showed that MIL-53(Fe)/PANI had a better light response and carrier migration ability than MIL-53(Fe). The transient absorption spectra also exhibited that the lifetimes of photo-generated carriers were prolonged after the conductive polymer deposition on the MIL-53(Fe) surface. Scavenger experiments demonstrated that the main active species were·O;-and·OH. Combined with activity evaluation results, and the possible photocatalytic mechanism of MIL-53(Fe)/PANI on RhB oxidation and Cr(Ⅵ) reduction was proposed. The addition of conductive polymer can effectively improve the light response of the catalyst under acidic conditions, and meanwhile citric acid also provided a new mediation for the synergistic degradation of multiple pollutants. Good activity and stability of the catalysts made the scale-up purification of acid water feasible under UV–Vis light. | Wanyuan Wang Chengxin Wen Daoyuan Zheng Chunhu Li Junjie Bian Xinbo Wang | 2022 | Chinese Journal of Chemical Engineering2022，35，2： | 2 |
| 9 | Effects of stocking density on the growth and immunity of Atlantic salmon salmo salar reared in recirculating aquaculture system(RAS)显示文摘Atlantic salmon reared in recirculating aquaculture system(RAS) may lead to inappropriately high stocking density, because ?sh live in a limited space. Finding the suitable stocking density of Atlantic salmon reared in RAS is very important for RAS industry. In this paper, the in?uence of stocking density on growth and some stress related physiological factors were investigated to evaluate the ef fects of stocking density. The ?sh were reared for 220 days at ?ve densities(A: 24 kg/m^3; B: 21 kg/m^3; C: 15 kg/m^3; D: 9 kg/m^3 and E: 6 kg/m^3). The results show that 30 kg/m^3 might be the maximum density which RAS can af ford in China. The stocking densities under 30 kg/m^3 have no ef fect on mortality of Atlantic salmon reared in RAS. However, the speci?c growth rate(SGR), ?nal weight and weight gain in the high density group were signi?cantly lower than the lower density groups and middle density groups. Moreover, feed conversion rate(FCR) had a negative correlation with density. Plasma hormone T_3 and GH showed signi?cant decrease with the increase of the stocking density of the experiment. Furthermore, thyroid hormone(T 3), GH(growth hormone) activities were decreased with stocking density increase. However, plasma cortisol, GOT(glutamic oxalacetic transaminase) and GPT(glutamic pyruvic transaminase) activities were increase with stocking density increase. And the stocking density has no ef fects on plasma lysozyme of Atlantic salmon reared in RAS. These investigations would also help devise effcient ways to rear adult Atlantic salmon in China and may, in a way, help spread salmon mariculture in China. | WANG Yanfeng CHI Liang LIU Qinghua XIAO Yongshuang MA Daoyuan XIAO Zhizhong XU Shihong LI Jun | 2019 | Journal of Oceanology and Limnology2019，37，1： | 2 |
| 10 | Limitations on the recruitment of the rare sand shrubby legume Eremosparton songoricum(Fabaceae) in Gurbantunggut Desert,China显示文摘Eremosparton songoricum,a rare and endemic sand dune plant,appears to be experiencing recruitment failure.The structure of five populations from the Gurbantunggut Desert,China,was investigated for recruitment patterns,and two of them were examined for flowering,pollination and seed germination limits on regeneration.The results showed that total 150 seedlings only occurred on line transects in riverside Dure population,but they all died half a month later;no seedlings occurred in other four hinterland desert populations indicating recruitment was a failure at all populations although flowers were plentiful.Reproductive success depends on pollinators.Nectar is 'reward' for pollinators,with 0.06 μL-0.12 μL and 0.15 μL-0.35 μL per flower in Dure and Kabu populations,respectively,in continuously two secreting days.Spontaneous self pollination is rare with nearly zero fruit production.Geitonogamous self pollination is predominant with 14.47% fruit set.Seed mass in the riverside Dure population was significantly greater than that in other hinterland desert populations.Consequently,the Dure population exhibited a significantly higher germination rate(about 90%) than those in other populations(about 30%).Results suggested that recruitment failure of E.songoricum is not due to flower shortage,pollination limitation,or poor seed germination but environmental pressure and/or human disturbance. | DaoYuan ZHANG HuiLiang LIU Xiang SHI JianCheng WANG YongKuan ZHANG | 2011 | Journal of Arid Land2011，3，2： | 2 |
| 11 | Structural deformation, metallogenic epoch and genetic mechanism of the Woxi Au-Sb-W deposit, Western Hunan Province, South China显示文摘The remobilization,migration,precipitation,and enrichment of ore-forming elements are closely related to structures.Therefore,detailed regional and ore-field structural analyses are critical for determining the genesis of a mineral deposit.The Jiangnan Orogenic Belt(JOB)is an important gold polymetallic metallogenic belt in South China,which is characterized by multiple periods of gold mineralization in the Paleozoic and Mesozoic.However,the genesis of these gold polymetallic deposits is still not well understood due to a lack of systematic research on the regional geology,ore-controlling structures and metallogenic mechanism.In this study,a detailed structural survey at the surface and in the subsurface tunnels was conducted on the Woxi Au-Sb-W deposit,the genesis of which is relatively controversial among the gold polymetallic deposits in the JOB due to poor structural constraints.In addition,a wolframite U-Pb dating was carried out to further constrain the relationship between structures and mineralization.Based on the results of these studies,together with those from previous studies,it is proposed that the Woxi deposit and surrounding areas likely underwent six periods of regional deformation,which are constrained in time and geodynamic setting.Furthermore,we present a systematic discussion on the roles of ore-controlling structures in the transportation,distribution,and deposition of ore-forming elements and localization of orebodies.According to the wolframite dating results,structural analyses,and previous data,we propose that the Woxi Au-Sb-W deposit was formed in two stages during the Yanshanian:a W(wolframite)-Au mineralization stage at ca.140 Ma and an Au-Sb-W(scheelite)mineralization stage at<130 Ma.These mineralizing events are interpreted to have a tight relationship with tectonic reactivation,and the ore-forming fluids were derived from deep sources,including those of magmatic or metamorphic origins.The Woxi deposit can therefore be classified as an“intracontinental reactivation-type”,and the mineralization is related to lithospheric extension caused by plate retreat,retention,and delamination following the cessation of westward subduction of the Paleo-Pacific Plate beneath the East Asian continent. | Bin LI Deru XU Daoyuan BAI Guoxiang CHI Junfeng DAI Cheng GAO Teng DENG Shaohao ZOU Wen MA Guojian WANG Yuexin LING Guangqian ZENG Yinmin LI | 2022 | Science China Earth Sciences2022，65，12： | 2 |
| 12 | Seismic anisotropy beneath the Chinese Mainland: Constraints from shear wave splitting analyses显示文摘We use earthquakes recorded by the China National Seismic Network from 2015 to 2019 and measure shear wave splitting parameters of SKS to study the anisotropic characteristics beneath the mainland of China.In general,the fast directions change from nearly E-W in western China(northwest China and Qinghai-Tibetan Plateau)to nearly N-S in central China(Ordos and Sichuan-Yunnan),and then turn to approximately E-W in eastern China(North and South China).The delay times of slow wave in eastern China are about 1.0-1.7 s,larger than those in central and western China(about 0.6-1.0 s).In addition,the fast directions in eastern China are highly consistent with the plate motion direction and horizontal GPS velocities with respect to Eurasia,indicating that the observed anisotropy is mainly from the asthenosphere which is strongly coupled to the overlying lithosphere.However,the fast directions in western China are mostly in accord with the strike of the surface structures(such as faults),possibly due to the directional arrangement of crystal lattices caused by shear deformation under tectonic activities. | Lingxia Gao Daoyuan Sun | 2021 | Earthquake Research Advances2021，1，4： | 2 |
| 13 | Desiccation tolerance in bryophytes: the rehydration proteomes of Bryum argenteum provide insights into the resuscitation mechanism显示文摘Bryum argenteum Hedw. is a desiccation tolerant bryophyte and belongs to one of the most important components of the biological soil crusts(BSCs) found in the deserts of Central Asia. Limited information is available on rehydration-responsive proteins in desiccation tolerant plants. As a complement to our previous research analyzing the rehydration transcriptome, we present a parallel quantitative proteomic effort to study rehydration-responsive proteins. Bryophyte gametophores were desiccated(Dry) and rehydrated for 2 h(R2) and 24 h(R24). Proteins from Dry, R2 and R24 gametophores were labeled by isobaric tags for relative and absolute quantitation(iTRAQ) to determine the relative abundance of rehydration-responsive proteins. A total of 5503 non-redundant protein sequences were identified and 4772(86.7%) protein sequences were annotated using Gene Ontology(GO) terms and Pfam classifications. Upon rehydration 239 proteins were elevated and 461 proteins were reduced as compared to the desiccated protein sample. Differentially up-regulated proteins were classified into a number of categories including reactive oxygen species scavenging enzymes, detoxifying enzymes, Late Embryogenesis Abundant(LEA) proteins, heat shock proteins, proteasome components and proteases, and photosynthesis and translation related proteins. Furthermore, the results of the correlation between transcriptome and proteome revealed the discordant changes in the expression between protein and mRNA. | GAO Bei ZHANG Daoyuan LI Xiaoshuang YANG Honglan LIANG Yuqing CHEN Moxian ZHANG Yuanming ZHANG Jianhua Andrew WOOD | 2018 | Journal of Arid Land2018，10，1： | 2 |
| 14 | Video-Assisted Thoracoscopic Surgery (VATS) for Patients with Solitary Fibrous Tumors of the Pleura显示文摘 | Jun Liu Chengjie Cai Daoyuan Wang Hanzhang Chen Linling Cheng Wenlong Shao Shuben Li Yubao Guan Yingying Gu Jianxing He | 2010 | Journal of Thoracic Oncology2010，，2： | 2 |
| 15 | Doped all-inorganic cesium zirconium halide perovskites with high-efficiency and tunable emission显示文摘Doping enables manipulation of both the electrical and optical properties of halide perovskites.Herein,we incorporated Te^(4+) into Cs_(2)ZrCl_(6) single crystal,simultaneously preserving the vacancy-ordered structure,to obtain an efficient yellow-emitting perovskite with a near-unity photoluminescence quantum yield(PLQY≈97.6%).Te^(4+) doping modifies the hue and emission color of pristine Cs_(2)ZrCl_(6),generates new absorption channels,and successfully extends the excitation energy from<280 nm to 360-450 nm range.Detailed spectral characterizations,including ultrafast femtosecond transient absorption measurements,reveal that the bright yellow light is derived from triplet self-trapped excitons.Moreover,further tuning doping concentration enables Te-doped Cs_(2)ZrCl_(6) single crystals to exhibit efficient warm white light emission.This work provides a new perspective for the development and design of stable lead-free perovskites with highly efficient luminescence. | Pengfei Cheng Daoyuan Zheng Lu Feng Yuefeng Liu Junxue Liu Juntao Li Yang Yang Guoxiong Wang Keli Han | 2022 | Journal of Energy Chemistry2022，31，2： | 2 |
| 16 | On Locating Malicious Code in Piggybacked Android Apps显示文摘为在机器人生态系统检测恶意的包裹设计有效途径和工具,研究人员们逐渐地被要求有恶意软件的深理解。因此有需要提供一个框架因为把的恶意软件和定位恶意的节目在应用软件代码以内碎裂以便造恶意的样品的全面数据集。向探讨这需要,我们在一条基于工具的途径把 HookRanker 称为的这个工作求婚,它基于恶意软件行为代码被触发的路提供潜在地恶意的包裹的评价的表。与 piggybacked 应用软件的一张地面真相的实验,我们能自动地为如此的包裹与 83.6% 的 accuracy@5 从 piggybacked 机器人应用软件定位恶意的包裹那为如此的包裹通过方法祈祷和 82.2% 的 accuracy@5 被触发那独立地被触发。 | Li Li Daoyuan Li Tegawende F. Bissyande Jacques Klein Haipeng Cai David Lo Yves Le Traon | 2017 | Journal of Computer Science & Technology2017，32，6： | 2 |
| 17 | Engineering strategies to enhance oncolytic viruses in cancer immunotherapy显示文摘Oncolytic viruses(OVs)are emerging as potentially useful platforms in treatment methods for patients with tumors.They preferentially target and kill tumor cells,leaving healthy cells unharmed.In addition to direct oncolysis,the essential and attractive aspect of oncolytic virotherapy is based on the intrinsic induction of both innate and adaptive immune responses.To further augment this efficacious response,OVs have been genetically engineered to express immune regulators that enhance or restore antitumor immunity. | Yaomei Tian Daoyuan Xie Li Yang | 2022 | Signal Transduction and Targeted Therapy2022，7，5： | 2 |
| 18 | Scattering for the focusing energy-subcritical nonlinear Schrdinger equation显示文摘For the 3D focusing cubic nonlinear Schrdinger equation,scattering of H1 solutions inside the(scale invariant) potential well was established by Holmer and Roudenko(radial case) and Duyckaerts et al.(general case) in 2008. In this paper,we extend this result to arbitrary space dimensions and focusing,mass-supercritical and energy-subcritical power nonlinearities,by adapting the method of Duyckaerts et al. | FANG DaoYuan XIE Jian CAZENAVE Thierry | 2011 | Science China Mathematics2011，54，10： | 2 |
| 19 | Automatic generation of cutting tool path upon freeform surfaces显示文摘 | Yu Daoyuan Duan Zhengcheng | 1993 | Materials and Processing Technology1993，36，4： | 1 |
| 20 | A Prospective Clinical Study of Proximal Humerus Fractures Treated With a Locking Proximal Humerus Plate显示文摘 | Huiguang Yang Zhongze Li Feng Zhou Daoyuan Wang Baoliang Zhong | 2011 | Journal of Orthopaedic Trauma2011，，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员