|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Petrology and mineral chemistry of new ureilites found in Grove Mountains,Antarctica显示文摘Petrography and mineral chemistry of two new ureilites, GRV 021512 and 022931, from the Grove Mountains, Antarctica, are reported in this paper. GRV 021512 exhibits a typical ureilite texture, and consists of 48.3% olivine, 9.4% pigeonite and 38.1% carbo- naceous interstitial material and/or reduction product. GRV 022931 has a cataclastic porphyritic texture, and consists of 19.1% olivine and 14.1% pigeonite embedded in 66.3% carbonaceous interstitial material and/or reduction product. The coarse-grained olivine and pigeonite in both meteorites have homogeneous cores, and they are FeO-rich within the range of the ferroan subgroup (subgroup I) of olivine-pigeonite ureilites. All olivine grains of the meteorites show reduction zones along boundaries and cracks. Abundant diamond coexists with graphite as graphite-rich patches and veins in the carbonaceous interstitial material. Petrogenesis of both meteorites and the origin of diamond are discussed. | Bingkui Miao Yangting Lin Guiqin Wang Daode Wang Ziyuan Ouyang | 2008 | Progress in Natural Science:Materials International2008，18，4： | 8 |
| 2 | Cosmic-ray exposure and gas retention ages of the Guang-mingshan(H5) chondrite显示文摘Isotopic compositions of noble gases from the Guangmingshan chondrite were analyzed. Based on the analyses of cosmogenic nuclei, cosmic-ray exposure age of the meteorite is (65±10.0) Ma (3He), (80±12) Ma (21Ne) and (65±10.0) Ma (38Ar), with an average of 70 Ma. This is the highest exposure age of H-group ordinary chondrites. Gas retention ages of K-Ar and U, Th-4He are (4230±100) Ma and (3300±60) Ma, respectively. The smaller ages of 3He than 21Ne and 4He than Ar suggest that both 3He and 4He lost together. This is probably related to a solar heating effect of a meteorite with a small perihelion during the last exposure period. | WANG Daode LIN Yangting LIU Jinyuan | 2001 | Chinese Science Bulletin2001，46，18： | 2 |
| 3 | Noble gas and cosmic-ray exposure age of Juancheng chondrite显示文摘The analytical results of noble gase in recently fallen Juancheng chondrite indicate that cosmic-ray ages of cosmogenic nuclei of 3He, 21Ne and 38Ar are 5.1, 5.0 and 5.8 Ma, respectively, averaging 5.3 Ma. The gas retention ages radiogenic nuclei of 4He and 40Ar are 3200 and 4 200 Ma, respectively. The average cosmic-ray age shows that it has occurred at breakup of the meteoroid from its parent body by impact before 5.3 Ma. | WANG Daode and WANG Ruitian Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou 510640, China Heze Bureau of Seismology, Shandong Province , Heze 274026, China | 1999 | Chinese Science Bulletin1999，44，12： | 2 |
| 4 | Reduced salinity interacts with ultraviolet radiation to alter photosystem Ⅱ function in diatom Skeletonema costatum显示文摘To investigate the effect of reduced salinity on diatoms’ capacity to cope with changing ultraviolet radiation(U VR) and photosynthetically active radiation(PAR),Skeletonema costatum was grown in a range of salinity(15,25,and 35).The photo system Ⅱ(PSⅡ) function was analyzed by increasing PAR and UVR to mimic a mixing event in turbulent waters.The re sults show that high UVR exposure significantly reduced PSII activity,especially in cells grown at low salinity.UVR,but not salinity,stimulated the ’removal’ rate of PSII protein PsbA.Salinity alone,in the range of 15 to 35,did not regulate PSⅡ acceptor region;however,the low salinity+UVR treatment decreased the energy flux for electron transport per PSⅡ reaction center in S.costatum.It showed that low salinity exacerbated the damaging effect of UVR on PSⅡ function in S.costatum by suppressing Psb A protein synthe sis and modifying the photochemistry of PSⅡ.Although higher catalase(CAT) activity and NPQs were induced,they were unable to prevent the combined damage effect of low salinity+UVR.Our findings indicate that reduced salinity and increased UVR potentially affect the abundance and distribution of S.costatum with the escalation of climate disturbances. | Shasha ZANG Fang YAN Daode YU Jingjing SONG Lei WANG Zhiguang XU Hongyan WU | 2022 | Journal of Oceanology and Limnology2022，40，4： | 1 |
| 5 | Rapid identification of spinal ventral and dorsal roots using a quartz crystal microbalance显示文摘The fast and accurate identification of nerve tracts is critical for successful nerve anastomosis.Taking advantage of differences in acetylcholinesterase content between the spinal ventral and dorsal roots,we developed a novel quartz crystal microbalance method to distinguish between these nerves based on acetylcholinesterase antibody reactivity.The acetylcholinesterase antibody was immobilized on the electrode surface of a quartz crystal microbalance and reacted with the acetylcholinesterase in sample solution.The formed antigen and antibody complexes added to the mass of the electrode inducing a change in frequency of the electrode.The spinal ventral and dorsal roots were distinguished by the change in frequency.The ventral and dorsal roots were cut into 1 to 2-mm long segments and then soaked in 250 μL PBS.Acetylcholinesterase antibody was immobilized on the quartz crystal microbalance gold electrode surface.The results revealed that in 10 minutes,both spinal ventral and dorsal roots induced a frequency change;however,the frequency change induced by the ventral roots was notably higher than that induced by the dorsal roots.No change was induced by bovine serum albumin or PBS.These results clearly demonstrate that a quartz crystal microbalance sensor can be used as a rapid,highly sensitive and accurate detection tool for the quick identification of spinal nerve roots intraoperatively. | Tao Sui Jun Que Dechao Kong Hao Xie Daode Wang Kun Shi Xiaojian Cao Xiang Li | 2013 | Neural Regeneration Research2013，8，8： | 1 |
| 6 | Grove Mountains (GRV) 024237: A new ureilite from Antarctica显示文摘Ureilites share the characteristics of differentiated meteorites and of primary chondrites. GRV 024237 is a ureilite, which was found in the 19th Chinese National Antarctic Research Expedition (CHINARE), at the No. 4 moraine, Grove Mountains, Antarctica. GRV 024237 consists mainly of coarse-grained olivine (60 vol%), pigeonite (30 vol%) and opaque minerals (10 vol%). Tri-junction texture between olivine and pigeonite is common. Carbonaceous materials with minor amounts of troilite and nickel-iron metal were observed as interstitial phases. The Fa value of olivine composition varies from 6.2 to 16.8 from rim to core, but pyroxene is homogeneous in composition, with Fs 14.0 to 15.5. Both olivine and pyroxene have normal extinctions. Net-like iron or limonite veins filled in the fractures of olivine and pyroxene, and no diamond was observed. Based on petrographic and mineralogical features, GRV 024237 is a Type I and Group 2 monomict ureilite. | JIANG Xiaoying WANG Guiqin WANG Daode MIAO Bingkui | 2012 | Advances in Polar Science2012，23，1： | 1 |
| 7 | A New Species of the Genus Protobothrops(Squamata: Viperidae) from Southern Tibet, China and Sikkim, India显示文摘A new species of the genus Protobothrops Hoge & Romano-Hoge, 1983, was described from Jilong County, southern Tibet, China, and Chungthang, northern Sikkim, India. It differs from congeners by the following characters: 1) relatively large body size(total length up to 1510 mm); 2) dorsal scale rows 25–25–19; 3) except for the smooth outermost row, dorsal scales are weakly keeled; 4) relatively high number of ventral(198–216) and subcaudal(65–76 pairs) scales; 5) 7–8 supralabials; 6) 11 to 13 infralabials; 7) dorsal head uniform dark brown, laterally a reddish-brown obscure postocular streak; 8) dorsum of trunk and tail olive, with distinct black edged red brown transverse bands across the body and tail; and 9) eye from bright brown and reddish brown to mildly brown. The new species was also observed from the Haa Valley in western Bhutan. | Hujun PAN Basundhara CHETTRI Daode YANG Ke JIANG Kai WANG Liang ZHANG Gernot VOGEL | 2013 | Asian Herpetological Research2013，4，2： | 1 |
| 8 | Neutron capture effects and pre-atmospheric sizes of meteoroids显示文摘Excesses of 80Kr and 82Kr, produced by secondary neutron capture effects of 79Br and 81Br, were observed in meteorites. Epithermal neutron flux, Jn (30—300 eV), and fast neutron flux, Jn( > 5 MeV), were determined according to reactions of 79Br(n, gb)80Kr, 81Br(n, gb)82Kr, and 24Mg(n, a)21Ne, respectively. Cosmogenic noble gases of several ordinary chondrites fell in China indicate a positive relationship between Jn (30—300 eV)/Jn ( > 5 MeV) ratio and Jn (30—300 eV). This suggests large pre-atmospheric sizes of the meteorites, and a considerable fraction of the secondary neutrons were slowed down to epithermal energy. According to its relationship with Jn (30—300 eV)/Jn ( > 5 MeV) ratio, the pre-atmospheric minimum radii and masses of several Chinese chondrites were estimated as below: Zhaodong: 60 cm, 3200 kg; Laochengzhen: 23 cm, 490 kg; Suizhou: 31 cm, 450 kg; Xi Ujimgin: 22 cm, 160 kg; Dongtai: 21 cm, 140 kg. | WANG Daode & LIN Yangting Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Correspondence should be addressed to Wang Daode (e-mail: gzwangdd @public.guangzhou.gd.cn) | 2003 | Chinese Science Bulletin2003，48，20： | 1 |
| 9 | INSPIRATION FROM STUDY OF ANTARCTIC METEORITES 1:PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA显示文摘Bulk concentrations of Ir, Os, Co and other siderophile elements of metal phase in chondrites increase significantly with degree of oxidation, which together with Co-content of kamacite and Fa-content of olivine, reveal a continuous variation of redox in chondrites. Intermediate groups of E/H, H/L, L/LL, and LL/C, lying between E and H, H and L, L and LL, LL and C, respectively, were proposed based on Co content in kamacite, Fa value of olivine, Fs value of low-Ca pyroxene, bulk concentrations of Ir, Os and Co of metal phase and other taxonomic parameters. The discovery of intermediate groups increases the number of chemical groups of chondrites from 9 to 13. Both variation of redox in chondrites and presence of the intermediate groups of chondrites suggest a continuous chemical fractionation in the primordial solar nebula. | Wang Daode and Lin YangtingInstitute of Geochemistry, Guangzhou Branch, Academia Sinica, Guangzhou 510640 | 1992 | Chinese Journal of Polar Science1992，3，1： | 0 |
| 10 | Metallic phases of Dong Ujimqin mesosiderite:A field emission scanning electron microscope study显示文摘The microstructure of Fe-Ni metallic phases in Dong Ujimqin mesosiderite was studied using the field emission SEM. Taenite is characterized by a zoned structure, consisting of outer clear taenite and inner cloudy zone (CZ). CZ has a typical 'island-honeycomb' microstructure. The average size of the island phase is about 358 nm, suggesting a cooling rate of~0.5℃/Ma at low temperature (<400℃). The Ni concentration profiles across kamacite and zoned taenite were also measured by electron probe microscope analysis (EPMA). Formation of the Fe-Ni metallic phases, microstructure in Dong Ujimqin mesosiderite was discussed based on the new low-temperature Fe-Ni phase diagram. | Yanhua Mao Daode Wang | 1999 | Chinese Science Bulletin1999，44，2： | 0 |
| 11 | Miscibility of light oil and flue gas under thermal action显示文摘The miscibility of flue gas and different types of light oils is investigated through slender-tube miscible displacement experiment at high temperature and high pressure.Under the conditions of high temperature and high pressure,the miscible displacement of flue gas and light oil is possible.At the same temperature,there is a linear relationship between oil displacement efficiency and pressure.At the same pressure,the oil displacement efficiency increases gently and then rapidly to more than 90% to achieve miscible displacement with the increase of temperature.The rapid increase of oil displacement efficiency is closely related to the process that the light components of oil transit in phase state due to distillation with the rise of temperature.Moreover,at the same pressure,the lighter the oil,the lower the minimum miscibility temperature between flue gas and oil,which allows easier miscibility and ultimately better performance of thermal miscible flooding by air injection.The miscibility between flue gas and light oil at high temperature and high pressure is more typically characterized by phase transition at high temperature in supercritical state,and it is different from the contact extraction miscibility of CO_(2) under conventional high pressure conditions. | XI Changfeng WANG Bojun ZHAO Fang HUA Daode QI Zongyao LIU Tong ZHAO Zeqi TANG Junshi ZHOU You WANG Hongzhuang | 2024 | Petroleum Exploration and Development2024，51，1： | 0 |
| 12 | Observation and analysis of morphology abnormalities in development of Oryzias melastigma embryos显示文摘Fish embryos are widely used as models in toxicology,drug development,and human disease research because of their high sensitivity,observability,and operability,providing the basis for an in-depth understanding of the embryogenesis.Increasing studies have indicated that birth defects are hereditary.In this study,we used Oryzias melastigma as a model to conduct a study of 185-day embryogenesis and observed self-induced non-pathological abnormal embryogenesis.O.melastigma experienced pre-puberty stage,adolescence stage,and senescence stage,and individuals produced up to 102 eggs per day.However,the fecundity was markedly reduced during the senescent stage.During the active egg and blastodisc stages,pseudo-fertilization and pseudo-blastocysts were observed.During cleavage at the 4-to 32-cell stages,we observed blastomeres separation or dislocation.Excessively separated blastomeres formed double blastoderms,eventually resulting in conjoined twins.During the blastula stage,we observed abnormally increased cell volume,narrowed and elongated blastocysts,and abnormally coated blastoderms.At the organogenesis stage,we observed abnormal numbers of Kupff er’s vesicles and conjoined twins.Abnormality in the location and number of oil droplets were observed in various development stages.Abnormal development was more commonly observed in fertilized eggs produced by broodstock in pre-puberty or senescence stages,which is probably related to the age of fish and the egg quality.This study can provide the materials for comparative analysis in toxicological and molecular studies of O.melastigma,and may provide evidence for other economic fish that produce sticky eggs. | Jingjing SONG Haiyi WU Kaikai LIU Wendan CHI Shanshan GE Zhipeng ZHANG Mingqi WANG Yi YU Daode YU | 2021 | Journal of Oceanology and Limnology2021，39，4： | 0 |
| 13 | Oxidization characteristics and thermal miscible flooding of high pressure air injection in light oil reservoirs显示文摘Physical modeling,numerical simulation and field case analysis were carried out to find out the subsurface thermal oxidation state,thermal oxidation front characteristics and production dynamic characteristics of high pressure air injection thermal oxidation miscible flooding technology.The lighter the composition and the lower the viscosity of the crude oil,the lower the fuel consumption and the combustion temperature are.The thermal oxidation front of light oil and volatile oil can advance stably,and a medium-temperature thermal oxidation stable displacement state can be formed in the light oil reservoir under high pressure conditions.With strong thermal gasification and distillation,light oil and volatile oil are likely to form a single phase zone of gasification and distillation with thermal flue gas at the high-temperature and high-pressure heat front,finally,an air-injection thermal miscible front.In light oil reservoirs,the development process of high-pressure air-injection thermal miscible flooding can be divided into three stages:boosting pressure stage,low gas-oil ratio and high-efficiency stable production stage and high gas-oil ratio production stage.Approximately 70%of crude oil is produced during the boosting pressure stage and low gas-oil ratio high-efficiency and stable production stage. | XI Changfeng WANG Bojun ZHAO Fang LIU Tong QI Zongyao ZHANG Xialin TANG Junshi JIANG Youwei GUAN Wenlong WANG Hongzhuang HE Dongbo SONG Xinmin HUA Daode ZHANG Xiaokun | 2022 | Petroleum Exploration and Development2022，49，4： | 0 |
| 14 | Catalogue of the Type Specimens of Amphibians and Reptiles in the Herpetological Museum of the Chengdu Institute of Biology, Chinese Academy of Sciences: Ⅳ. Lizards(Reptilia, Sauria)显示文摘In the present study, we report the six type specimens and two paratypes of eight lizard species in the Herpetological Museum of the Chengdu Institute of Biology(CIB), Chinese Academy of Sciences(CAS). Each entry provides the information of the original description, the catalog number of the holotype, sex, type locality, and information of allotype and paratype(if any), number and distribution of deposited specimens, and comments. Additionally, two invalid species and one invalid subspecies are discussed. | Bo WANG Ke JIANG Jiatang LI Yuezhao WANG Daode YANG | 2015 | Asian Herpetological Research2015，6，4： | 0 |
| 15 | Research and Measures on the Security of Internet of Things显示文摘With the development of intelligent perception,recognition technology and pervasive computing,Internet of things( IoT) is widely used,the security problem is also concerned by more and more researchers. IoT is a double-edged sword. On the one hand,it has great potential in simplifying the business process and provides an effective way for the enterprise to interact with the customers. But on the other hand,it also provides convenience for cyber crimes and hackers.First of all,Three layers logic architecture of IoT is introduced,and the security problems at each level and the key points of the research are expounded,and then the security requirements are analyzed. The main causes of security problems are summarized and analyzed: physical attack and the threat of equipment and malware,file attack and hacker attack. Finally,through the application of the existing technology in IoT environment,the exploration of new technology and the security of the hardware related to IoT,the security of the software and the security team,the future research direction of the security of IoT is pointed out. | HU Liangjun WEI Daode LI Xiaofeng WANG Hongmei SONG Rui | 2018 | International Journal of Plant Engineering and Management2018，23，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员