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| 1 | An accurately delineated Permian-Triassic Boundary in continental successions显示文摘The Permian-Triassic Boundary Stratigraphic Set (PTBST), characteristic of the GSSP section of Meishan and widespread in marine Permian-Triassic Boundary (PTB) sequences of South China, is used to trace and recognize the PTB in a continental sequence at Chahe (Beds 66f―68c). Diversified Permian plant fossils extended to the PTBST, and a few relicts survived above that level. Sporomorphs are dominated by fern spores of Permian nature below the PTBST, above which they are replaced by gymnosperm pollen of Triassic aspect. In the nearby Zhejue Section, the continental PTBST is charac- terized by the fungal 'spike' recorded in many places throughout the world. The boundary claybeds (66f and 68a,c) of the PTBST are composed of mixed illite-montmorillonite layers analogous with those at Meishan. They contain volcanogenic minerals such as β quartz and zircon. U/Pb dating of the upper claybed gives ages of 247.5 and 252.6 Ma for Beds 68a and 68c respectively, averaging 250 Ma. In con- trast to the situation in Xinjiang and South Africa, the sediment sequence of the Permian-Triassic tran- sition in the Chahe section (Beds 56―80) become finer upward. Shallowing and coarsening upward is not, therefore, characteristic of the Permian-Triassic transition everywhere. The occurrence of relicts of the Gigantopteris Flora in the Kayitou Fm. indicates that, unlike most marine biota, relicts of this pa- leophytic flora survived into the earliest Triassic. It is concluded that Bed 67 at Chahe corresponds to Bed 27 at Meishan, and that the PTB should be put within the 60-cm-thick Bed 67b④, now put at its base tentatively. This is the most accurate correlation of the PTB in continental facies with that in the marine GSSP. | YIN HongFu1, YANG FengQing2, YU JianXin2, PENG YuanQiao1, WANG ShangYan3 & ZHANG SuXin1 1 Laboratory of Biological and Environmental Geology, China University of Geosciences, Wuhan 430074, China 2 State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Wuhan 430074, China 3 Geological Survey of Guizhou Province, Guiyang 550011, China | 2007 | Science China Earth Sciences2007，50，9： | 13 |
| 2 | Combating the Fragile Karst Environment in Guizhou,China显示文摘喀斯特景观布满落水洞、洞穴、地下河及可溶性基岩,它们占据全球地表面积的25%。虽然某些喀斯特景观很吸引人,具有审美价值,大部分则是脆弱区,不适合人类居住,因为土层极其浅薄或完全无土,而且水容易流失。 | Zhang Baiping Xiao Fei Wu Hongzhi Mo Shenguo Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Datun Road 3#,Beijing 100101,China.Email: Zhu Shouqian Yu Lifei Forestry College,Guizhou University,Guiyang 550025,China.Emaih Xiong Kangning Lan Anjun Department of Resources and Environment,Guizhou Normal University,Guiyang 550001,China.Email: | 2006 | AMBIO-人类环境杂志2006，35，2： | 9 |
| 3 | Triassic Transgressive-Regressive Sequences in Guizhou-Guangxi Region, South China显示文摘Seven third-order transgressive-regressive sequences are recognized in the Early Triassic -Early Carnian stratigraghc succession of Guizhou-Guangxi region, South China. Based on currently available ages by the correlation of conodont ammonites and bivalve faunas, these sequences range approximately from 1.0 Ma to 5.6 Ma, with the average of 3 Ma. They occur largely in the Griesbachian-Dienerian, Smithian,uppermost Smithian-lowermost Anisian, Lower Anisian, Middle Anisian, Upper Anisian-Upper Ladinian and the uppermost Ladinian-Lower Carnian respectively, and can be grouped into three second-order transgressive-regressive supersequences. A relative sea level curve is established from the sequence stratigraghic analysis. Transgressive-regressive sequences,bounded by transgressive surfaces and the correlatable unconformities, are real unconformity-bounded units of lower rank. Each sequence comprises transgressive, highstand and regressive systems tracts, and can be easily correlated with the depositional sequence. | Wei Jiayong (Regional Geological Survey, Xi’an College of Geology, Xi ’an 710054) Liao Nengmao Yu Youyi (Regional Geological Surveying Institute of Guizhou, Guiyang 550005) | 1996 | Journal of Earth Science1996，15，1： | 6 |
| 4 | The potential effect of variations in climate and agricultural practice on N_2O emissions (Ⅱ)——Variations in agricultural practice显示文摘WE expanded Decomposition-Denitrification (DNDC)modeling study to systematically assess the potential effect of farming practice on N2O emission by choosing a corn-rape rotation and a soybean-winterwheat rotation field in Guizhou Province, westsouthern China, asN2O emission from subtropical agricultural soil study plots. These sensitivity studies address questions relevant to issue of how change in fanning practice might be used to mitigate emissions. Manure additions had the most pronounced impact on N2O emissions of farming practice simulatedand the influence of manure addition was nonlinear (fig. 1). This result is consistent with previous studies for an Iowa corn field. The addition of manure remarkably elevates the level of organic carbon, enhances soil nitrogen mineralization, and increases the efficiency of N2O production. Simulated results alsoshowed that the influence of manure additions on N2O emission from soybean-winter wheat field had | XU Wenbin~(1,2), HONG Yetang~1, CHEN Xuhui~3, LI Changsheng~4, LIN Qinghua~1 and WANG Yu~1, 1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Institute of Environment and Resources Chemistry, Zhejiang University, Hangzhou 310027, China 3. Soil and Fertilizer Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550013, China 4. Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, USA | 1999 | Chinese Science Bulletin1999，44，S2： | 1 |
| 5 | Near‐Infrared Emitting Radioactive Gold Nanoparticles with Molecular Pharmacokinetics显示文摘 | Chen Zhou Guiyang Hao Patrick Thomas Jinbin Liu Mengxiao Yu Shasha Sun Orhan K. ?z Xiankai Sun Jie Zheng | 2012 | Angew. Chem. Int. Ed2012，，40： | 1 |
| 6 | Experimental studies of tired-mineral interaction in low temperature显示文摘THE physical properties of petroleum and natural gas reservoirs (porosity, permeability, etc.) are important parameters reflecting the quality of the reservoirs, so they are of important significance in the exploration and the development of petroleum and gas. Most of oil and gas resources in China are stored in thefragmental reservoir of continental basin. Not only the primary sedimentary factors but also the diageneticchanges after deposition affect the physical properties of the reservoir. And the diagenetic change, infact, is the interaction of fluid and minerals in low temperature. This note is about some experimental studies on the ordinary minerals in fragmental reservoir such asalkali feldspar and plagioclase and discusses the experimental results of the interaction between the fluidsand these two kinds of feldspar in different pH values and different media. The chemical composition and structural formula of the samples used in these experiments are | GAO Liping~1, YANG Weidong~1, LUO Xiaojun~1, JIA Hongyu~2, ZENG Jianhui~2, YU Bingsong~3 and LAI Xingyun~3 1. Open laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. University of Petroleum, Beijing 102200, China 3. China University of Geosciences, Beijing 100083, China | 1999 | Chinese Science Bulletin1999，44，S2： | 1 |
| 7 | Cognitive Metaphor and English Vocabulary Learning | YU Da-zhao (Guizhou Normal University, Guiyang 550001, China) | 2011 | 海外英语2011，，6X： | 0 |
| 8 | Removal of Low-concentration Ammonia from Ambient Air by Aluminophosphates显示文摘 | LI Chunyang WU Shujie YU Guiyang YANG Xuwei LIU Gang ZHANG Wenxiang | 2018 | Chemical Research in Chinese Universities2018，34，3： | 0 |
| 9 | Biotechnological and food synthetic biology potential of platform strain:Bacillus licheniformis显示文摘Bacillus licheniformis is one of the most characteristic Gram-positive bacteria.Its unique genetic background and safety characteristics make it have important biologic applications in the food industry,including,the biosyn-thesis of high value-added bioproducts,probiotic functions,biological treatment of wastes derived from food production,etc.In this review,these recent advances are summarized and presented systematically for the first time.In addition,we highlight synthetic biology strategies as a potential driver of developing this strain for wider and more efficient application in the food industry.Finally,we present the current challenges faced and provide our unique perspective on relevant future research directions.In summary,this review will provide an illumi-nating and comprehensive perspective that will allow an in-depth understanding of B.licheniformis and promote its more effective development in the food industry. | Hehe He Qianqian Yu Zhongyang Ding Liang Zhang Guiyang Shi Youran Li | 2023 | Synthetic and Systems Biotechnology2023，8，2： | 0 |
| 10 | Synthesis and Anticonvulsant Activity of γ-Aminobutyric Acid Derivatives显示文摘Under physiological conditions, γ-aminobutyric acid poorly crosses the blood-brain barrier. It is likely that a non-toxic derivative of γ-aminobutyric acid which enters the brain easily will have useful anticonvulsant activity. 16 derivatives of γ-aminobutyric acid with an imine link to a lipophilic carrier were prepared and tested for anticonvulsant activity; six compounds show anticonvulsant activity. | Mu YUAN Yu Guo ZHONG Qi Jie PANG(Department of Pharmacy, Guiyang Medical College, Gujyang 550004 School of Pharmacy, West China University of Medical Sciences, Chengdu 610044) | 1998 | Chinese Chemical Letters1998，9，4： | 0 |
| 11 | Investigation and Analysis of Artificial Rearing Snake Diseases in Yongzhou Area of Hunan Province显示文摘In recent years,artificial rearing snake diseases are increasingly rising,and some farms have suffered huge losses due to outbreak of snake diseases.Disease has become a big bottleneck restricting artificial breeding industry of snakes,and effective prevention and control of snake diseases has become the top priority.To control snake diseases purposely,questionnaires of artificial rearing snake diseases were released to 21 snake households in Yongzhou area of Hunan Province from February to May in 2014,and on-the-spot investigation was conducted as well.The types,etiology,epidemic characteristics,clinical symptoms and control effects of snake diseases in Yongzhou area were preliminarily understood,and their causes were analyzed.Survey showed that dermatitis,pneumonia,stomatitis,parasitosis,enteritis and powdery mildew were the six major diseases of artificial rearing snakes in Yongzhou area.The incidence of dermatitis was the highest of 61.9%,followed by pneumonia (42.8%). | Zheng Chunfang Tan Qunying Guo Dezhi Hu Minghang Yu Guiyang | 2016 | Animal Husbandry and Feed Science2016，8，5： | 0 |
| 12 | Atomic Ni directional-substitution on ZnIn_(2)S_(4) nanosheet to achieve the equilibrium of elevated redox capacity and efficient carrier-kinetics performance in photocatalysis显示文摘It is a challenge to coordinate carrier-kinetics performance and the redox capacity of photogenerated charges synchronously at the atomic level for boosting photocatalytic activity.Herein,the atomic Ni was introduced into the lattice of hexagonal ZnIn_(2)S_(4) nanosheets(Ni/ZnIn_(2)S_(4))via directionalsubstituting Zn atom with the facile hydrothermal method.The electronic structure calculations indicate that the introduction of Ni atom effectively extracts more electrons and acts as active site for subsequent reduction reaction.Besides the optimized light absorption range,the elevation of Efand ECBendows Ni/ZnIn_(2)S_(4) photocatalyst with the increased electron concentration and the enhanced reduction ability for surface reaction.Moreover,ultrafast transient absorption spectroscopy,as well as a series of electrochemical tests,demonstrates that Ni/ZnIn_(2)S_(4) possesses 2.15 times longer lifetime of the excited charge carriers and an order of magnitude increase for carrier mobility and separation efficiency compared with pristine ZnIn_(2)S_(4).These efficient kinetics performances of charge carriers and enhanced redox capacity synergistically boost photocatalytic activity,in which a 3-times higher conversion efficiency of nitrobenzene reduction was achieved upon Ni/ZnIn_(2)S_(4).Our study not only provides in-depth insights into the effect of atomic directional-substitution on the kinetic behavior of photogenerated charges,but also opens an avenue to the synchronous optimization of redox capacity and carrier-kinetics performance for efficient solar energy conversion. | Haibin Huang Guiyang Yu Xingze Zhao Boce Cui Jinshi Yu Chenyang Zhao Heyuan Liu Xiyou Li | 2024 | Journal of Energy Chemistry2024，88，1： | 0 |
| 13 | Distribution characteristics of iodine in humic acid-high underground water in Inner Mongolia and their relations to IDD disease显示文摘THE concentrations of iodine in humic acid-high underground water are not low, but the IDD disease isprevailing in some areas and no such disease is reported in some other areas. In order to explore the causes of disease and the factors affecting the concentrations of I in underground water, the author collected51 water samples from the Amengbayingmaodao Farm, Langshan Town, Linghe City of Bameng, ShibaTown of Wuyuan County, Qingshan Town of Wulatiehou Prefecture, and Zhijiliang Village in the suburbsof Hohhot City in the central and western part of Inner Mongolia for investigation. The analytical resultsshow that the water samples were relatively alkaline (pH=7.91 on average). The average concentrationsof cations vary in the order of Na+>Ca2+> Mg2+>K+ while those of anions follow the decreasing | YU Xiaoying State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China | 1999 | Chinese Science Bulletin1999，44，S2： | 0 |
| 14 | The potential effect of variations in climate and agricultural practice on N_2O emissions (Ⅰ)——Variations in climate显示文摘N2O is an important greenhouse gas, its major anthropogenic source is agricultural soils and its emissionsare primarily influenced by climate and agricultural practice. This study chose a corn-rape rotation, asoybean-winter wheat rotation and a fallow field in Guizhou Province, westsouthern China as N2O emissions from subtropical agricultural soils study plots. Based on the success of test and validation exercise ofmeasured and Decomposition-Denitrification(DNDC) modeled N2O emission, and several associatedvariables, from above study fields exhibiting similar trends and magnitudes, we expanded DNDC modelto systematically assess the potential effect of variations in climate and farming practice in future on N2Oemissions from subtropical agricultural soils as above three study fields case study. The baseline condi- | XU Wenbin~(1,2), HONG Yetang~1, CHEN Xuhui~3, LI Changsheng~4, LIN Qinghua~1 and WANG Yu~1 1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Institute of Environment and Resources Chemistry, Zhejiang University, Hangzhou 310027, China 3. Soil and Fertilizer Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550013, China 4. Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, USA | 1999 | Chinese Science Bulletin1999，44，S2： | 0 |
| 15 | Isolation and identification of chemical constituents from the vinegar-prepared Corydalis yanhusuo显示文摘Phytochemical investigation of the vinegar-prepared Corydalis yanhusuo led to the isolation of one aristolactam derivative,1,2,8,9-tetramethoxy-5-methyldibenzo[cd,f]indol-4-(5H)-one(1),and seven aporphine alkaloids,including 2,9,10-trimethoxydibenz[de,g]quinolin-7-one(2),1-hydroxy-2,9,10-trimethoxy-7H-dibenzo(de,g)quinoline-7-one(3),oxoglaucine(4),N-methyloxoglaucine trifluoroacetate trifluoroacetate(5),corunine acetate(6),pontevedrine(7),and oxoglaucidaline trifluoroacetate(8).The structures of the isolated compounds were elucidated by extensive spectroscopic data analysis and comparison with the previous reports.Among them,compounds 1 and 2 were obtained as natural products for the first time,and their NMR data were unambiguously assigned.In addition,compound 1 exhibited moderate cytotoxic activity against HepG2 cells with an IC50 value of 16.0±6.4μM. | Guiyang Xia Dongjie Fang Yuzhuo Wu Huan Xia Xinlan Yu Sheng Lin Hongcai Shang | 2021 | Asian Journal of Traditional Medicines2021，16，4： | 0 |
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