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1Further support for a Cretaceous age for the feathered-dinosaur beds of Liaoning,China:New ^(40)Ar/^(39)Ar dating of the Yixian and Tuchengzi Formations显示文摘We report new 40Ar/39Ar dating results ob-tained from total fusion and incremental-heating analyses of sanidine and biotite from three tuffs found interbedded within the fossil-bearing deposits of Liaoning, northeast China. The first is a new sample of the Bed 6 Sihetun tuff from the Yixian Formation, previously dated by our team as middle Early Cretaceous, and recently considered by Lo et al., partially reset due to metamorphism from a nearby ba-saltic sill. The second is the Yixian Bed 9 tuff from Heng-daozi considered by Lo et al. to be unaffected by metamor-phism and whose age, based on total fusion 40Ar/39Ar dating of biotite, argues for a Jurassic age for the Yixian Formation. The third tuff is a previously undated tuff from the upper part of the underlying Tuchengzi Formation. Single crystal total fusion 40Ar/39Ar analyses of the Sihetun sanidine showed homogeneous radiogenic Ar, Ca/K ratios, excellent reproducibility and gave a mean age of 125.0 ± 0.18 (1SD) ± 0.04 (SE) Ma. Single sanidineC. C. Swisher III, WANG Xiaolin, ZHOU Zhonghe, WANG Yuanqing, JIN Fan, ZHANG Jiangyong , XU Xing, ZHANG Fucheng & WANG YuanDepartment of Geological Sciences, Wright Labs, Rutgers University, Piscataway, New Jersey 08854, USA (e-mail: cswish@rutgers. rci.e 2002Chinese Science Bulletin2002,47,2:83
2A nearly completely articulated rhamphorhynchoid pterosaur with exceptionally well-preserved wing membranes and 'hairs' from Inner Mongolia, northeast China显示文摘We report a new and nearly completely articu-lated rhamphorhynchoid pterosaur, Jeholopterus ningchen-gensis gen. et sp. nov., with excellently preserved fibres in the wing membrane and 'hairs' in the neck, body and tail re-gions. Many of its characteristics such as a short neck, short metacarpals and distinctively long fifth pedal digit are char-acteristic of rhamphorhynchoids. The new species can be further referred to the ’strange’ short-tailed rhamphorhyn-choid family Anurognathidae. It is much more complete than the other known members of the family, namely, Anurog-nathus from Solnhofen, Germany, Batrachognathus from Karatau, Kazakhstan, and Dendrorhynchoides from Beipiao, Liaoning Province, China. The new pterosaur also shows that the wing membrane is attached to the ankle of the hind limb. The pedal digits are webbed. Furthermore, the 'hair' of Jeholopterus bears some resemblance to the hair-like in-tegumental structures of the feathered dinosaur Sinosaurop-teryx although there is yet no directXiaolin Wang Zhonghe Zhou Fucheng Zhang Xing Xu 2002Chinese Science Bulletin2002,47,3:37
3Two new ornithurine birds from the Early Cretaceous of western Liaoning,China显示文摘We describe two new ornithurine birds from the Early Cretaceous Jiufotang Formation of western Liaoning, northeast China: Yanornis martini gen. et sp. nov. and Yixianornis grabaui gen. et sp. nov. They represent the best fossil record of ornithurine birds known from the Early Cretaceous. They are more advanced than the most primitive ornithurine Liaoningornis, and are more similar to the other two Chinese Early Cretaceous ornithurines Chaoyangia and Songlingornis. Compared with Confuciusornis, Liaoxiornls and Eoenantiornis from the same age, the two new birds show remarkable advanced characteristics and suggest the presence of powerful flight capability like modern birds. Compared with Yixianornis and Chaoyangia, Yanornis is larger, with a more elongated skull and relatively long wings. The new discoveries indicate that by the Early Cretaceous both enantiornithine and ornithurine birds had already radiated significantly. The flight structures of Yanornis and Yixianornis are hardly distinguishable fromZhonghe Zhou Fucheng Zhang 2001Chinese Science Bulletin2001,46,15:36
4Early diversification of birds: Evidence from a new opposite bird显示文摘A new enantiornithine bird Longipteryx chao-yangensis gen. et sp. nov. is described from the Early Cretaceous Jiufotang Formation in Chaoyang, western Liaoning Province. This new bird is distinguishable from other known enantiornithines in having uncinate processes in ribs, elongate jaws, relatively long wings and short hindlimbs, and metatarsal Ⅳ longer than metatarsals Ⅱ and Ⅲ. This new bird had probably possessed (i) modern bird-like thorax which provides firm attachment for muscles and indicates powerful and active respiratory ability; (ii) powerful flying ability; (iii) special adaptation for feeding on aquatic preys; and (iv) trochleae of metatarsals Ⅰ-Ⅳ almost on the same level, an adaptation for perching. The new bird represents a new ecological type different from all known members of Enantiornithes. It shows that enantiornithines had probably originated earlier than the Early Cretaceous, or this group had experienced a rapid radiation right after it first occurred in the early EarlyZHANG Fucheng ZHOU Zhonghe HOU Lianhai GU Gang 2001Chinese Science Bulletin2001,46,11:26
5Special Section:SARS-CoV-2 Preliminary evidence from a multicenter prospective observational study of the safety and efficacy of chloroquine for the treatment of COVID-19显示文摘Effective therapies are urgently needed for the SARS-CoV-2 pandemic.Chloroquine has been proved to have antiviral effect against coronavirus in vitro.In this study,we aimed to assess the efficacy and safety of chloroquine with different doses in COVID-19.In this multicenter prospective observational study,we enrolled patients older than 18 years old with confirmed SARS-CoV-2 infection excluding critical cases from 12 hospitals in Guangdong and Hubei Provinces.Eligible patients received chloroquinephosphate s00 mg,orally,once(half dose)or twice(full dose)daily.Patients treated with non-chloroquine therapy were included as historical controls.The primary endpoint is the time to undetectable viral RNA.Secondary outcomes include the proportion of patients with undetectable viral RNA by day 10 and 14,hospitalization time,duration of fever,and adverse events.A total of 197 patients completed chloroquine treatment,and 176patients were included as historical controls.The median time to achieve an undetectable viral RNA was shorter in chloroquine than in non-chloroquine(absolute difference in medians-6.0 days;95%CI-6.0 to—4.0).The duration of fever is shorter in chloroquine(geometric mean ratio 0.6;95%CIO.5 to 0.8).No serious adverse events were observed in the chloroquine group.Patients treated with half dose experienced lower rate of adverse events than with full dose.Although randomized trials are needed for further evaluation,this study provides evidence for safety and efficacy of chloroquine in COVID-19 and suggests that chloroquine can be a cost-effective therapy for combating the COVID-19 pandemic.Mingxing Huang Man Li Fei Xiao Pengfei Pang Jiabi Liang Tiantian Tang Shaoxuan Liu Binghui Chen Jingxian Shu Yingying You Yang Li Meiwen Tang Jianhui Zhou Guanmin Jiang Jingfen Xiang Wenxin Hong Songmei He Zhaoqin Wang Jianhua Feng Changqing Lin Yinong Ye Zhilong Wu Yaocai Li Bei Zhong Ruilin Sun Zhongsi Hong Jing Liu Huili Chen Xiaohua Wang Zhonghe Li Duanqing Pei Lin Tian Jinyu Xia Shanping Jiang Nanshan Zhong Hong Shan 2020National Science Review2020,7,9:20
6Geothermal data analysis at the high-temperature hydrothermal area in Western Sichuan显示文摘The western Sichuan hydrothermal area is located at the northeastern margin of the eastern syntaxis of the Qinghai-Tibet Plateau, which is also the eastern end of the Mediterranean-Himalayan geothermal activity zone. There are 248 warm or hot springs in this area, and 11 have temperatures beyond the local boiling temperature. Most of these hot springs are distributed along the Jinshajiang, Dege-Xiangcheng, Ganzi-Litang, and Xianshuihe faults, forming a NW-SE hydrothermal belt. A geothermal analysis of this high-temperature hydrothermal area is an important basis for understanding the deep geodynamic process of the eastern syntaxis of the Qinghai-Tibet Plateau. In addition, this study offers an a priori view to utilize geothermal resources, which is important in both scientific research and application. We use gravity, magnetic, seismic, and helium isotope data to analyze the crust-mantle heat flow ratio and deep geothermal structure. The results show that the background terrestrial heat flow descends from southwest to northeast. The crustal heat ratio is not more than 60%. The high temperature hydrothermal active is related to crustal dynamics processes. Along the Batang-Litang-Kangding line, the Moho depth increases eastward, which is consistent with the changing Qc/Qm(crustal/mantle heat flow) ratio trend. The geoid in the hydrothermal zone is 4–6 km higher than the surroundings, forming a local 'platform'. The NW-SE striking local tensile stress zone and uplift structure in the upper and middle crust corresponds with the surface hydrothermal active zone. There is an average Curie Point Depth(CPD) of 19.5–22.5 km in Batang, Litang, and Kangding. The local shear-wave(S-wave) velocity is relatively low in the middle and lower crust. The S-wave shows a low velocity trap(Vs<3.2 km s.1) at 15–30 km, which is considered a high-temperature partial melting magma, the crustal source of the hydrothermal active zone. We conclude that the hydrothermal system in this area can be divided into Batang-type and Kangding-type, both of which rely on a crustal heating cycle of atmospheric precipitation and surface water along the fracture zone. The heat is derived from the middle and lower crust: groundwater penetrates the deep faults bringing geothermal energy back to the surface and forming high-temperature springs.ZHANG Jian LI WuYang TANG XianChun TIAN Jiao WANG YingChun GUO Qi PANG ZhongHe 2017Science China Earth Sciences2017,60,8:17
7Vertebrate diversity of the Jehol Biota as compared with other lagersttten显示文摘In the last twenty years,the extraordinary discoveries of vertebrate fossils from the Jehol Biota not only have important impli-cations for studying the evolution of major Mesozoic vertebrate groups,their paleobiostratigraphy and paleoenvironmentology,but also provide critical evidence for understanding the biodiversity changes of the Early Cretaceous ecosystem.Currently,the Jehol Biota in a narrow sense(i.e.,distribution limited to western Liaoning,northern Hebei,and southeastern Inner Mongolia) comprises a vertebrate assemblage of at least 121 genera and 142 species.Among them are 13 genera and 15 species of mammals,33 genera and 39 species of birds,30 genera and 35 species of dinosaurs,17 genera and species of pterosaurs,5 genera and species of squamates,5 genera and 7 species of choristoderes,2 genera and species of turtles,8 genera and species of am-phibians,7 genera and 13 species of fishes as well as 1 genus and species of agnathan.All these known 121 genera are extinct forms,and only a small percentage of them(e.g.,agnathans,some fishes and amphibians) can be referred to extant families.The Jehol vertebrate diversity already exceeds that of the contemporaneous lagersttten such as Santana Fauna from Brazil and the Las Hoyas Fauna from Spain,and is nearly as great as that of the Jurassic Solnhofen Fauna and the Eocene Messel Fauna from Germany.Therefore,The Jehol Biota undoubtedly represents a world class lagerst?tte in terms of both fossil preservation and vertebrate diversity.The success of the Jehol vertebrate diversity had a complex biological,geological,and paleoenviron-mental background.Analysis of the habitat and diet of various vertebrate groups also indicates that the habitat and dietary dif-ferentiation had played a key role in the success of the taxonomic diversity of vertebrates of various ranks.Furthermore,the interactions among vertebrates,plants,and invertebrates as well as the competitions among various vertebrate groups and some key morphological innovations also contributed to the success of the Jehol vertebrate diversity.ZHOU ZhongHe* & WANG Yuan Key Laboratory of Evolutionary Systematics,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044,China 2010Science China Earth Sciences2010,53,12:14
8The Jehol Biota, an Early Cretaceous terrestrial Lagerst ¨atte: new discoveries and implications显示文摘The study of the Early Cretaceous terrestrial Jehol Biota,which provides a rare window for reconstruction of a Lower Cretaceous terrestrial ecosystem,is reviewed with a focus on some of the latest progress.A newly proposed deinition of the biota based on paleoecology and taphonomy is accepted.Although the Jehol fossils are mainly preserved in two types of sedimentary rocks,there are various types of preservation with a complex mechanism that remains to be understood.New discoveries of signiicant taxa from the Jehol Biota,with an updated introduction of its diversity,conirm that the Jehol Biota represents one of the most diversiied biotas of the Mesozoic.he evolutionary signiicance of major biological groups(e.g.dinosaurs,birds,mammals,pterosaurs,insects,and plants)is discussed mainly in the light of recent discoveries,and some of the most remarkable aspects of the biota are highlighted.he global and local geological,paleogeographic,and paleoenvironmental background of the Jehol Biota have contributed to the unique composition,evolution,and preservation of the biota,demonstrating widespread faunal exchanges between Asia and other continents caused by the presence of the Eurasia–North American continental mass and its link to South America,and conirming northeastern China as the origin and diversiication center for a variety of Cretaceous biological groups.Although some progress has been made on the reconstruction of the paleotemperature at the time of the Jehol Biota,much more work is needed to conirm a possible link between the remarkable diversity of the biota and the cold intervals during the Early Cretaceous.Finally,future directions for the study of the Jehol Biota are proposed that highlight the great potential of more comprehensive and multidisciplinary studies to further our understanding of the biological and geological implications of the Jehol Lagerst¨ate.Zhonghe Zhou 2014National Science Review2014,1,4:11
9A New Species of Cathayornis from the Lower Cretaceous of Inner Mongolia,China and Its Stratigraphic Significance显示文摘摘要:不完全的 postcranial 鸟的骨骼从西方的内部蒙古的 Otog 旗帜的更低的白垩纪 Jingchuan 形成被描述并且指了 Cathayornis 的新种, C。chabuensis sp。nov。这是从外面的辽宁省的 Cathayornis 的第一份报告。新发现显示 Cathayornis 与 Otogornis genghisi 共存了,并且更多详细说明了在 Otogornis 代表的这二 enantiornithine 类表演之间的比较一个更原始的类比 Cathayornis。我们的分析进一步显示 Cathayornis 是一只树木的鸟。从这个区域的 Cathayornis 的发现也证实鸟的忍受石块的 Jingchuan 形成比得上在西方的辽宁的上面的 Jehol 组的 Jiufotang 形成,并且应该被指中间迟了的早白垩纪。LI Jianjun LI Zhiheng ZHANG Yuguang ZHOU Zhonghe BAI Zhiqiang ZHANG Lifu BA Tuya 2008Acta Geologica Sinica(English Edition)2008,82,6:11
10Groundwater circulation relative to water quality and vegetation in an arid transitional zone linking oasis, desert and river显示文摘In groundwater-dependent ecosystems, groundwater circulation controls the overall water quality and ecosystem dynamics. Groundwater and vegetation across a 30-km groundwater transect linking oasis, desert and river in an extremely arid area were investigated with a series of soil profiles drilled into the unsaturated zone to understand groundwater circulation and its control on groundwater quality and surface vegetation in the extremely arid Lower Tarim River, NW China. Measurements have included water-table depth, water chemistry and water isotopes (2H, 18O, 3H) for 15 water samples, soil moisture and chloride content for 11 soil profiles, and vegetation investigation. Results show that the groundwater in desert zone is characterized by slow recharge rate (pre-modern water), great water-table depth (6.17-9.43 m) and high salinity (15.32-26.50 g/L), while that in oasis (uncultivated land) and riparian zone is characterized by relatively fast recharge rate (modern water), small groundwater-table depth (3.56-8.36 m) and low salinity (1.25-1.95 g/L). Stable isotopes show that secondary evaporation takes place during irrigation in oasis. The vegetation characteristics (coverage, richness, evenness and number of plants) are closely related to soil moisture and water-table depth. Groundwater recharge from irrigation in oasis and from river in riparian zone sustains a better ecosystem than that in the desert area, where lateral and vertical groundwater recharge is limited. The more evapotranspirative enrichment may occur in the vegetated and water-rich riparian zone as compared to desert. This study also demonstrates the effectiveness of environmental tracers in studying ecohydrological processes in arid regions.HUANG TianMing PANG ZhongHe CHEN YaNing KONG YanLong 2013Chinese Science Bulletin2013,58,25:10
11Oxygen and Hydrogen Isotopes of Waters in the Ordos Basin,China:Implications for Recharge of Groundwater in the North of Cretaceous Groundwater Basin显示文摘从 1988 年 1 月在 Ordos 盆从气象学的车站收集到 2005 年 12 月的几百件降水样品被用来建立一根本地大气的水线并且计算现代降水的加权的平均同位素的作文。氧和氢同位素,与为 δ 18 分别地, O 和 δD 在春天在冬季和富人被弄空,并且逐渐地在夏天和秋天减少,说明季节的效果是可观的。他们也证明南方部分和 Ordos 盆的北方部分之间的同位素的差别不是明显的,并且在中间的部分的同位素通常被弄空。32 件样品的同位素作文从浅地下水收集了(不到 150 m 的深度) 在到有为 δ 18 O 并且从 85 ‰到有为 δD 的 63 ‰的一般水准的 46 ‰。他们中的大多数与现代降水是相同的。22 中间、深的地下水的同位素作文(比 275 m 的深度大) 为 δ 18 O 并且从 89 ‰到有为 δD 的 76 ‰的一般水准的 63 ‰。一般水准珍视,说明是显著地不到那些现代降水中间、深的地下水在比较地更低的空气温度被再装。14 C 证明中间、深的地下水的 recharge 在迟了的更新世开始了。从八个湖收集的 13 件湖水样品的同位素定义一个本地蒸发趋势,与 3.77 的一个相对扁平的斜坡,并且证明湖水被现代降水和浅地下水主要喂。YANG Yuncheng SHEN Zhaoli WENG Dongguang HOU Guangcai ZHAO Zhenhong WANG Dong PANG Zhonghe 2009Acta Geologica Sinica(English Edition)2009,83,1:10
12Pico-satellite Autonomous Navigation with Magnetometer and Sun Sensor Data显示文摘This article presents a near-Earth satellite orbit estimation method for pico-satellite applications with light-weight and low-power requirements. The method provides orbit information autonomously from magnetometer and sun sensor, with an extended Kalman filter (EKF). Real-time position/velocity parameters are estimated with attitude independently from two quantities: the measured magnitude of the Earth’s magnetic field, and the measured dot product of the magnetic field vector and the sun vector. To guarantee the filter’s effectiveness, it is recommended that the sun sensor should at least have the same level of accuracy as magnetometer. Furthermore, to reduce filter’s computation expense, simplification methods in EKF’s Jacobian calculations are introduced and testified, and a polynomial model for fast magnetic field calculation is developed. With these methods, 50% of the computation expense in dynamic model propagation and 80% of the computation burden in measurement model calculation can be reduced. Tested with simulation data and compared with original magnetometer-only methods, filter achieves faster convergence and higher accuracy by 75% and 30% respectively, and the suggested simplification methods are proved to be harmless to filter’s estimation performance.HAN Ke WANG Hao TU Binjie JIN Zhonghe 2011Chinese Journal of Aeronautics2011,24,1:8
13A Miocene ostrich fossil from Gansu Province,northwest China显示文摘HOU Lianhai ZHOU Zhonghe ZHANG Fucheng WANG Zhao 2005Chinese Science Bulletin2005,50,16:8
14Correlation of D-dimer level with the radiological severity indexes of pulmonary embolism on computed tomography pulmonary angiography显示文摘Ji Yingqun Sun Bo Keeran Sandya Juggessur-Mungur Li Zhiyong Zhang Zhonghe 2014Chinese Medical Journal2014,,11:7
15A new pterosaur (Pterodactyloidea, Tapejaridae) from the Early Cretaceous Jiufotang Formation of western Liaoning, China and its implications for biostratigraphy显示文摘In this article we describe a new and excep-tionally well-preserved pterodactyloid pterosaur, Sinopterus dongi gen. et sp. nov. from the Jiufotang Formation in west-ern Liaoning Province of northeast China. The new species is referred to the family Tapejaridae, representing its first re-cord outside Brazil. It also represents the earliest occurrence as well as the most complete skeleton of the family. Some revisions are made about the family according to the mor-phological observations of the postcranial bones of Sinop-terus. Two pterosaur assemblages appear to have existed in the Jehol Group, represented by the lower Yixian Formation and upper Jiufotang Formation, respectively. The lower pterosaur assemblage shows some resemblance to that of the Late Jurassic in Solnhofen (Tithonian) by sharing members of the Pterodactylidae and Anurognathidae. The upper one shows more resemblance to that of the Early Cretaceous Santana Formation (Aptian/Albian) by comprising only pterodactyloids such as the Tapejaridae. The age of the Yixian Formation is younger than that of the Solnhofen lithographic limestone, and the age of the Jiufotang Forma-tion (Aptian) is slightly older than the Santana Formation.WANG Xiaolin & ZHOU Zhonghe Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China Correspondence should be addressed to Wang Xiaolin (e-mail: xlinwang @263.net) 2003Chinese Science Bulletin2003,48,1:6
16Stratigraphy and age of the Daohugou Bed in Ningcheng,Inner Mongolia显示文摘Recent fieldwork has extended the distribution of the Daohugou Bed deposits from the Daohugou Village to its several neighboring areas. The fossil-bearing Daohugou deposits uncomformably overlie complex bedrocks, and com- prise three major parts. The red shales in the lower part were misidentified as belonging to the Tuchengzi Formation. Field excavation has indicated that the shales of upper part of the bed are the major fossil-bearing horizon. Due to strong tectonic activities, sediments were often folded with the se- quences inverted in the region. Some newly recognized con- tacts between the Daohugou Bed and the volcanic rocks showed that the ignimbrite of the Tiaojishan Formation (159―164 Ma) underlies the Daohugou deposits, rather than overlying the latter as previously proposed. Thus, the age of the Daohugou deposits should be younger than the age of the ignimbrite, and thus it was incorrect to correlate the Dao- hugou Bed with the Middle Jurassic Jiulongshan Formation. Although biostratigraphic studies based on conchostracans and insects support a Middle Jurassic-early Late Jurassic age for the Daohugou deposits, vertebrate fossils such as Liaoxitriton, Jeholopterus and feathered maniraptorans show much resemblance to those of the Yixian Formation. In other words, despite the absence of Lycoptera, a typical fish of the Jehol Biota, the Daohugou vertebrate assemblage is closer to that of the Early Cretaceous Jehol Biota than to any other biota. We propose that the Daohugou fossil assemblage probably represents the earliest evolutionary stage of the Jehol Biota based on both vertebrate biostratigraphy and the sedimentological and volcanic features which suggest the Daohugou deposit belongs to the same cycle of volcanism and sedimentation as the Yixian Formation of the Jehol Group.WANG Xiaolin ZHOU Zhonghe HE Huaiyu JIN Fan WANG Yuanqing ZHANG Jiangyong WANG Yuan XU Xing ZHANG Fucheng 2005Chinese Science Bulletin2005,50,20:6
17Million-year-old groundwater revealed by krypton-81 dating in Guanzhong Basin,China显示文摘Groundwater age,defined as the mean subsurface residence time spent isolated from the atmosphere,is of crucial significance for managing water resources and industrial waste.It is also very useful for understanding subsurface contaminant transport,and for paleoclimate reconstruction.It is an important parameterJie Li Zhonghe Pang Guo-Min Yang Jiao Tian Amin L.Tong Xiang-Yang Zhang Shui-Ming Hu 2017Science Bulletin2017,62,17:6
18Analysis on Nutrient Compositions and Nutritional Quality of Lota lota( Linnaeus) Muscle显示文摘In order to evaluate the nutritional quality of Lota lota(Linnaeus) muscle,the common nutrient components,amino acid composition and fatty acid composition in muscle of wild Lota lota(captured in Hailang reaches of Mudan River) were determined by routine methods. The results showed that the contents of moisture,crude protein,crude fat and ash were 81. 82%,15. 93%,0. 44% and 1. 06% in fresh muscle of Lota lota,respectively. Totally 17 amino acids,including seven kinds of essential amino acids(EAA),were detected in dry muscle of Lota lota(Linnaeus),accounting for 72. 43% of total dry muscle. The content of EAA was 29. 82%,accounting for 41. 17% of TAA,meeting the amino acid composition of high-quality protein standard required by Food and Agriculture Organization /Word Health Organization(FAO /WHO). There were four delicious amino acids(DAA) in dry muscle,accounting for 28. 34% of total dry weight.The percentage of DAA to TAA was 39. 13% in dry muscle. The contents of C20:5n- 3(EPA) and C22:6n- 3(DHA) in dry muscle were 8. 65% and 20. 32%respectively,which were significantly higher than that of the artificially cultured fish species,such as Oxyeleotris marmorata(EPA:2. 24%,DHA:4. 74%),Spinibarbus sinensis(EPA:0. 87%,DHA:3. 08%) and Glossogobius giuris(EPA: 3. 94%,DHA: 8. 10%). Based on the amino acids score(AAS) and chemical score(CS),the first limited amino acid in Lota lota(Linnaeus) was sulfur-containing amino acid(methionine + cysteine). The essential amino acids index(EAAI) of Lota lota(Linnaeus) was 62.58. It is concluded that Lota lota(Linnaeus) is abundant in amino acids and high-unsaturated fatty acids,and rational in composition of amino acids. Thus,Lota lota(Linnaeus) is a high quality freshwater fish with high nutritional value and health value,possessing good exploitation and utilization prospects.Xu Gefeng Wang Yuyu Bai Qingli Li Xiaolong Jia Zhonghe 2014Animal Husbandry and Feed Science2014,6,4:5
19On the horizon of Protopteryx and the early vertebrate fossil assemblages of the Jehol Biota显示文摘Protopteryx, a monotypic fossil bird discovered from the Sichakou basin in Fengning, Hebei, is the most primitive enantiornithine currently known. The bird-bearing strata do not contain the index fossils of the Yixian Formation in western Liaoning; the fish and bird fossils have more primitive features than the related forms found in the Yixian Formation, and the conchostracans are those usually distributed in the Dabeigou and Dadianzi formations in northern Hebei. Besides, the Protopteryx-bearing strata underlie the deposits bearing the index fossils of the Yixian Formation in the neighboring basin. Thus, it could be confirmed that the horizon of Protopteryx should be lower than the Yixian Formation, and is approximately equivalent to the Dadianzi Formation in northern Hebei. This is the lowest horizon of the known fossil birds in China and Mesozoic enantiornithine birds in the world. Accompanying Protop- teryx, there are other birds, acipenseriform fishes, salamanders, and mammals, which compose the Peipiaosteus fengningensis-Protopteryx fengningensis assemblage. This new assemblage traces the vertebrate evolution history of the Jehol Biota back to 130.7 Ma before. It is suggested that the de- marcation of the Jehol Biota should be based on the large-scale tectonic-sedimentary cycles, and Peipiaosteus, instead of Lycoptera, could be taken as the vertebrate representative of the Jehol Biota.JIN Fan ZHANG FuCheng LI ZhiHeng ZHANG JiangYong LI Chun ZHOU ZhongHe 2008Chinese Science Bulletin2008,53,18:5
20Space Flight Validation of Design and Engineering of the ZDPS-1A Pico-satellite显示文摘The ZDPS-1A pico-satellites are the first satellites in China within the 1-10 kg mass range that are successfully operated on orbit. Unlike common pico-satellites, they are designed to be 'larger but stronger' with more powerful platforms and unique payloads so as to bear a better promise for real applications. Through their space flight mission, the functionality and performance of the two flight models are tested on orbit and validated to be mostly normal and in consistency with design and ground tests with only several inconforming occasions. Moreover, they have worked properly on orbit for one year so far, well exceeding their life expectancy of three months. Therefore, the space flight mission has reached all its goals, and verified that the design concept and the engineering process of the picosatellites are sufficient in allowing them the desired functionality and performance in, and the adaption to the launch procedure and the low-Earth orbit space environment. In the foreseeable future, the platform together with the design concept and the engineering process of the pico-satellites are expected to be applied to more complicated real space applications.YANG Mu WANG Hao WU Changju WANG Chunhui DING Licong ZHENG Yangming JIN Zhonghe 2012Chinese Journal of Aeronautics2012,25,5:5
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