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1Basic Lithofacies-Succession Model for the Wumishan Cyclothems: Their Markov Chain Analysis and Regularly Vertical Stacking Patterns in the Third-Order Sequences显示文摘The Mesoproterozoic Wumishan Formation in the Jixian section ofTianjin is a succession of 3300-m-thick carbonate strata formed in a period of about 100 Ma (1310 ± 20 Ma-1207 ± 10 Ma). In this succession of strata, the carbonate metre-scale cyclic sequences belonging to peritidal type with an approximately symmetrical lithofacies succession are best developed. The wide development of 1:4 stacking patterns shows that these metre-scale cyclic se quences are genetically related to the short-eccentricity cycles, which are called the Wumishan cyclothems that could truly represent sedimentary cycles. Generally, massive and thick-bedded calcareous dolomites and dolomitic limestones of stromatolite biostromes and thrombolite bioherms constitute the central part of the Wumishan cyclothems. The lower and upper parts consist of tidal flat dolostones, sandy-muddy dolostone and the top part is composed of lagoonal facies dolo mitic shales with a paleosol cap. Therefore, an approximately symmetrical lithofacies-succession is formed. Many features such as the clear deepening and shoaling vectors of cyclothems, and all kinds of marks of fresh-water diagenesis indicate that the Wumishan cyclothems are the product of autocyclic sedimentation governed by allocyclic high-frequency sea level changes. The results of a Markov chain analysis reaffirm the existence of the lithofacies-succession model of the Wumishan cyclothems. The boundaries of the Wumishan cyclothems are marked by the instantaneous exposed punctuated surface, which leads to the discrepancy between the cyclothems and the parasequences of the sequence stratigraphy ter minology system. It is difficult to form a judgment that the time span of the Milankovitch cycles in the Precambrian is certainly equal to that of the Phanerozoic, but the regularly vertical stacking patterns of the seventh-order rhythms, sixth order cyclothems and fifth-order parasequence sets still indicate their consistency with the duration of the Milankovitch cycles in the Phanerozoic.MEI Mingxiang, MA Yongsheng and GUO Qingyin Institute of Earth Sciences and Natural Resources, China University of Geosciences, Beijing 100083 China Petrochemical Corporation (SINOPEC), Beijing 100029 2001Acta Geologica Sinica(English Edition)2001,75,4:19
2Estimation of genetic parameters and breeding values in shrimp F enneropenaeus chinensis using the REML/BLUP procedure显示文摘An analysis of a selection experiment was used to assess the impact of various animal model structures on REML estimates of variance components.The analyses were carried out based on 162 d body mass (BM) of 1 287 animals from 21 paternal half-sib groups of Fenneropenaeus chinensis.Estimated breeding values (EBV) of BM of all individuals were estimated using eight statistical models (A,AB,ABC,ABDC,ABMFC,ABMDC,ABFDC and ABMFDC) and BLUP (best linear unbiased prediction).These models were designed involving factors such as sex,spawn date as fixed effects,maternal genetic effects,full-sib family effects as random effects,mean BM of families at tagging and age at recording (covariate).The results demonstrate the importance of correct interpretation of effects in the data set,particularly those that can influence resemblance between relatives.The data structure and the particular model that was applied markedly influenced the magnitude of variance component estimates.Models based on few effects obtained upward biased estimates of additive genetic variance.The accuracy of genetic parameters and breeding value estimated by ABFDC model was higher than other models.The results imply that additive genetic direct value,full-sib family effects,and covariance effects besides sex and spawn date as fixed effects were very important for estimating genetic parameters and breeding value of body mass.This model had a heritability estimate of 162 d BM of 0.44.The comparison of the efficiency of selection based on breeding values or phenotypic value revealed great difference:average breeding value of the best 24 families selected by the 162 d BM breeding value and phenotype were 0.577 g and 0.366 g,respectively,representing a 36.57% higher efficiency in the former.In conclusion,selection based on breeding value was more effective than selection based on phenotypic value.Our results indicate that effects influencing the magnitude of estimates should be taken into account when estimating heritability and breeding values for BM.ZHANG Tianshi KONG Jie LUAN Sheng WANG Qingyin LUO Kun TIAN Yia 2011Acta Oceanologica Sinica2011,30,1:12
3Fischer Plots of Wumishan Cyclothems,Precambrian Records of Third-OrderSea-Level Changes显示文摘The Mesoproterozoic Wumishan Formation ((1310 ± 20 ) Ma - (l 207 ± 10) Ma) in Jixian, Tianjin represents a succession of 3 300 meter thick carbonate strata where are the best developed stromatolite biostromes and thrombolite bioherms. These biostromes and bioherms, together with tidal-flat dolomites and muddy dolostones, form Wumishan cyclothems with approximately symmetrical faciessuccession fabrics, which belong to carbonate meter-scale cyclic sequences of peritidal type. These cyclothems are overlain by lagoon dolomitic mudstones and shales and by frequently developed paleosol layers, indicating that the boundary of Wumishan cyclothems is marked by an instantaneously-exposed punctuated surface. Viewed form the regularly vertical stacking patterns of Wumishan cyclothems in long-term sequences, 26 third-order sequences may be discerned in Wumishan Formation. These thirdorder sequences may also be incorporated into six second-order sequences. In order to study the variation range of third-order sea-level changes and the formation period of third-order sequence, 626 cyclothems are discerned in the middle and upper parts of Wumishan Formation where the outcrops are well developed. In terms of the total thickness and the formation period of Mesoproterozoic Wumishan Formation, the crust subsidence rate in the sedimentary period of Wumishan Formation is supposed to be 3 meters at each interval of 100 thousands years. Based on this assumption, Fischer plot might be designed to simulate the third-order sea-level changing pattern.Mei Mingxiang Faculty of Earth Sciences and Mineral Resources, China University of Geosciences, Beijing 100083 Ma Yongsheng China Petrochemical Corporation (SINOPEC), Beijing 100029 Zhou Hongrui Du Benming Luo Zhiqing Guo Qingyin Faculty of Earth Sc 2001Journal of China University of Geosciences2001,12,1:11
4Outline of Uranium Resources Characteristics and Metallogenetic Regularity in China显示文摘Uranium,as one of twenty-six kinds of important minerals in China,is strategic resource and energy mineral,which has been thoroughly investigated in the project of National Potential Evaluation of Uranium Resource.During the implementation of this project,the authors summarized the metallogenic regularity of uranium resource in China systematically,through the researches of geological characteristics of uranium resource,uranium deposits type(genetic and prediction type),temporal and spatial distribution,and metallogenic series.Based on the investigation of present situation and progress in uranium exploration,this paper proposes the uranium deposits in China should be divided into 4 classes,9 types,21 subtypes in genetic,and 50 types in prediction;suggests to divide China into 29 uranium metallogenic belts and 20 uranium prospective area,and constructs 20uranium-polymetallic metallogenic series,through summarizing temporal and spatial distribution characteristics and metallogenic regularity of uranium deposits in China.The above research is beneficial to the comprehensive understanding of regional uranium metallogenic regularity,and will direct the uranium exploration in the future.CAI Yuqi ZHANG Jindai LI Ziying GUO Qingyin SONG Jiye FAN Honghai LIU Wusheng QI Fucheng ZHANG Minglin 2015Acta Geologica Sinica(English Edition)2015,89,3:11
5Revegetation with artificial plants improves topsoil hydrological properties but intensifies deep-soil drying in northern Loess Plateau,China显示文摘Knowledge about the effects of vegetation types on soil properties and on water dynamics in the soil profile is critical for revegetation strategies in water-scarce regions, especially the choice of vegetation type and human management measures. We focused on the analysis of the effects of vegetation type on soil hydrological properties and soil moisture variation in the 0–400 cm soil layer based on a long-term(2004―2016) experimental data in the northern Loess Plateau region, China. Soil bulk density(BD), saturated soil hydraulic conductivity(Ks), field capacity(FC) and soil organic carbon(SOC) in 2016, as well as the volumetric soil moisture content during 2004–2016, were measured in four vegetation types, i.e., shrubland(korshinsk peashrub), artificial grassland(alfalfa), fallow land and cropland(millet or potato). Compared with cropland, revegetation with peashrub and alfalfa significantly decreased BD and increased Ks, FC, and SOC in the 0–40 cm soil layer, and fallow land significantly increased FC and SOC in the 0–10 cm soil layer. Soil water storage(SWS) significantly declined in shrubland and grassland in the 40–400 cm soil layer, causing severe soil drought in the deep soil layers. The study suggested that converting cropland to grassland(alfalfa) and shrubland(peashrub) improved soil-hydrological properties, but worsened water conditions in the deep soil profile. However, natural restoration did not intensify deep-soil drying. The results imply that natural restoration could be better than revegetation with peashrub and alfalfa in terms of good soil hydrological processes in the semi-arid Loess Plateau region.ZHANG Qingyin JIA Xiaoxu ZHAO Chunlei SHAO Ming'an 2018Journal of Arid Land2018,10,3:8
6Genetic parameter estimation for juvenile growth and upper thermal tolerance in turbot(Scophthalmus maximus Linnaeus)显示文摘Twenty-six half-sib groups(53 full-sib families) of turbot, Scophthalmus maximus Linnaeus, were obtained by artificial insemination. We measured growth in the offspring(40–50 individuals/family) and subjected them to a thermal tolerance challenge over a period of 34 d. There was no significant difference in daily mortality(range: 0.580%–1.391%) between Days 1–13 during the thermal tolerance challenge. However, daily cumulative mortality increased rapidly between Days 14 and 29, especially on Days 15 and 16(20.232% and 34.377%, respectively). Mortality was highest on Day 16(14.145%). We estimated the genetic parameters using the average information restricted maximum likelihood method. We used a likelihood ratio test to evaluate the significance of effects in models with and without identity as an effect, and compared the final log-likelihoods(maximum log L). Lastly, we estimated phenotypic and genetic correlation between the upper thermal tolerance limit(UTT) and body weight(BW). In this study, the positive phenotypic correlation was low between UTT and BW(0.093±0.029). The genetic correlation between UTT and BW was negative(-0.044±0.239). The heritability for upper thermal tolerance was low(0.087±0.032), which is of approximately moderate heritability. The heritability for body weight was high(0.303±0.074). Our results suggest there is significant potential for improvement in the culture of turbot by selective breeding.ZHANG Tianshi KONG Jie LIU Baosuo WANG Qingyin CAO Baoxiang LUAN Sheng WANG Weiji 2014Acta Oceanologica Sinica2014,33,8:7
7Uranium Metallogenic Regionalization and Resource Potential in China显示文摘This paper is comprehensively involved in main types of uranium deposits and their general metallogenic characteristics, metallogenic fields, provinces, regions and belts, and uranium resources potential evaluation. Generally speaking, there are favorable conditions and good uranium resources potential for uranium mineralization in China.LI Ziying ZHANG Jindai JIAN Xiaofei CAI Yuqi GUO Qingyin ZHU Pengfei 2012Acta Geologica Sinica(English Edition)2012,86,3:4
8Genetic parameters for cold tolerance and body weight of Chinese fleshy prawn,Fenneropenaeus chinensis显示文摘The inability of Fenneropenaeus chinensis to tolerate low temperatures is of major economic concern in temperate climates,as it reduces their growing season and leads to over-winter mortality.In this study,the heritability of body weight under low grow-out temperature and cold tolerance in F.chinensis were first investigated and estimated using 88 ful-sib families,which might provide crucial information in Chinese fleshy prawn breeding programs.The heritability for body weight under suitable and low temperature of F.chinensis were both moderate(0.158 0±0.307 5 and 0.132 0±0.026 9 respectively);the large coefficient of variation(approximately 21%) and moderate estimate of heritability for body weight indicated substantial potential for selective breeding.The heritability estimate for cold tolerance was low(0.019 2±0.023 5),and showed no significant differences from zero(P>0.05).A weak genetic correlation between cold tolerance and body weight was also estimated in the present study,also showing no significant differences from zero(P>0.05).Thus,more research needs to be conducted on the more accurate heritability estimate of cold tolerance and genetic correlations between traits in F.chinensis to further improve the achievement of breeding goals.LI Wenjia LUAN Sheng LUO Kun SUI Juan LU Xia WANG Qingyin KONG Jie 2016Acta Oceanologica Sinica2016,35,6:3
9Synthesis of Poly(isosorbide carbonate) via Melt Polycondensation Catalyzed by a KF/MgO Catalyst显示文摘MgO loaded with KF was prepared by using tlie impregnation method and was employed as the catalyst for tlie direct traiisesterification of diphenyl carbonate(DPC) witli isosorbide to synthesize high-molecular-weight poly(isosorbide carbonate)(PIC). The relationship between physical-chemical properties and catalytic performance for KF/MgO in this melt process was investigated by various characterization techniques. The basic site amount and strength were found to be responsible for this transesterification process, and the medium and strong basic sites tended to promote the polycondensation reaction. 20-KF/Mg0-500 exhibited the best catalytic performance, giving PIC with Mw of 84200 and glass transition temperature(rg) of 173℃ under optimal conditions. Additionally, 20-KF/MgO-500 was found to catalyze the transerification of DPC with isosorbide and other diols to syntliesize the corresponding poly(aliphatic diol-co-isosorbide carbonate)s(PAICs). This excellent activity can be ascribed to the presence of an abundance of basic sites and their specific basic strength on the surface of KF/MgO.SHEN Xiaolong LIU Shaoying WANG Qingyin ZHANG Hua WANG Gongying 2019Chemical Research in Chinese Universities2019,35,4:3
10Synthesis and Properties of Poly(butylene carbonate-co-spirocyclic carbonate)显示文摘Poly(butylene carbonateXPBC) has significantly promising applications as a degradable material in the field of polymers, while its poor thermal performance and low crystallization rate are its main defects. To overcome these shortcomings, a series of poly(butylene carbonate-co-spirocyclic carbonateXPBSC) copolymers were synthesized from diphenyl carbonate, 1,4-butanediol and spiroglycol via two-step polycondensation reactions, using magnesium oxide as a catalyst. Differential scanning calorimetry(DSC) results indicated that the glass transition temperature(Tg) values of PBSC copolymers were enhanced from -19℃ to 56℃ with rising the spiroacetal moiety content. Thermogravimetric analysis(TGA) results showed that the resulting PBSCs have a higher thermal stability than that of poly(butylene carbonate). Wide angle X-ray diflraction(WXRD) patterns were characterized to investigate the crystallization behaviour of PBSCs. Tensile testing demonstrated that copolymerization of spiroacetal moieties into PBC chains imparted PBSC with favourable mechanical performance. Typically, PBSC 30 had a tensile modulus of (1735±430) MPa, a tensile strength of (42±5) MPa and an elongation of 504%±36%.ZHU Changliang LIU Shaoying WANG Qingyin ZHANG Hua 2019Chemical Research in Chinese Universities2019,35,4:3
11A solvothermal pre-oxidation strategy converting pitch from soft carbon to hard carbon for enhanced sodium storage显示文摘Due to its low cost and easy availability, the pitch is considered a promising precursor for soft carbon anodes. However, pitch-derived soft carbon shows a high graphitization degree and small interlayer spacing, resulting in its much lower sodium storage performance than hard carbon. We propose a novel preoxidation strategy to introduce additional oxygen atoms into the low-cost soft carbon precursor pitch to fabricate a defect-rich and large-interlayer spacing hard carbon anode(HPP-1100). Compared with the direct pyrolysis of pitch carbon, the sodium storage capacity of HPP-1100 is significantly improved from 120.3 m Ah/g to 306.7 m Ah/g, with an excellent rate and cycling capability(116.5 m Ah/g at 10 C). Moreover, when assorted with an O_(3)-Na(NiFeMn)1/3O_(2)cathode, the full cell delivers a high reversible capacity of 274.0 m Ah/g at 0.1 C with superb cycle life. This work provides a new solution for realizing the application of low-cost pitch anodes in Na-ion batteries.Jing Wang Lei Yan Binhua Liu Qingjuan Ren Linlin Fan Zhiqiang Shi Qingyin Zhang 2023Chinese Chemical Letters2023,34,4:3
12Polarization loss analysis and ageing characterisation of transformer oil-immersed insulation by using decoupled frequency domain spectroscopy显示文摘The polarization information contained in the frequency-domain spectroscopy(FDS)could be utilised for characterising the ageing degree of transformer oil-immersed insulation.However,the polarization information will be obscured by its conductance effect,it is thus hard to analyse the polarization behaviour by using the traditional FDS technique.Given this issue,an alternative approach is proposed to analyse the polari-zation information using FDS decoupled by logarithmic-derivative spectroscopy(LDS).Findings proved that the polarization loss information generated by polarization behaviour can be separated from the total dispersion loss.The proposed feature pa-rameters are later used to analyse the polarization loss information under ageing impact.Also,the polarization loss surface is constructed by using these feature parameters to characterise the ageing degrees of oil-immersed samples.Finally,the potential possibility of using the proposed method to analyse the polarization loss and ageing degree are respectively discussed.Xianhao Fan Jiefeng Liu Yiyi Zhang Zheshi Ding Qingyin Wang 2022High Voltage2022,7,3:2
13Synthesis and conductivity of substituted heteropoly acid with Dawson structure H_7[Ga(H_2O)P_2W_(17)O_(61)].18H_2O显示文摘A new solid high-proton conductor,H7[Ga(H2O)P2W17O61].18H2O,a substituted heteropoly acid with Dawson structure,has been synthesized by the degradation/ion-exchange/freezing method.The product was characterized by potentiometric titration,chemical analysis,IR,UV,XRD and TG-DTA.Complex impedance measurements show a high conductivity(5.44×10-3 S/cm at 50℃),with an activation energy for proton conduction of 36.04 kJ/mol.The mechanism of proton conduction is the Vehicle mechanism.QIAN XueYu HE ZhiQi WU QingYin TONG Xia YAN WenFu GONG Jian 2011Chinese Science Bulletin2011,56,22:2
14Analysis of DNA methylation in different tissues of Fenneropenaeus chinensis from the wild population and Huanghai No. 1显示文摘DNA methylation plays an important role in the regulation of gene expression during biological development and tissue differentiation in eukaryotes. A methylation sensitive amplification polymorphism(MSAP) including digestion, pre-selective amplification and selective amplification was optimized to compare the levels of DNA cytosine methylation at CCGG sites in muscle, gill and hemocyte from the wild populations and the selective breeding of Huanghai No. 1 of Fenneropenaeus chinensis, respectively. Significant differences in cytosine methylation levels among three tissues in two populations were detected. The average DNA methylation ratios in muscle, gill and hemocyte of the wild population were 23.1%, 22.3% and 19.7%, while those were 21.4%, 19.6%,and 18.9% in Huanghai No. 1, respectively. The DNA methylation levels of gill from the two populations were highly significant(P<0.01), the difference of muscle was significant(P<0.05), while in hemocyte, there were no significant differences(P>0.05). DNA polymorphic methylation of gill and hemocyte between the wild population and Huanghai No. 1 varies to some extent, while those of muscle kept in a balanced degree. Furthermore,polymorphic methylation was associated with demethylation and methylation of CCGG loci.HE Yuying DU Ying LI Jian LIU Ping WANG Qingyin LI Zhaoxia 2015Acta Oceanologica Sinica2015,34,12:2
15Stock enhancement and translocation of the shrimp Penaeus chinensis inChina显示文摘WANG Qingyin ZHUANG Zhimeng DENG Jingyao 2006Fish Res2006,80,1:1
16Molecular cloning and characterization of prophenoloxidase gene in swimming crab Portunus trituberculatus显示文摘Ping Chen Jitao Li Jian Li Ping Liu Baoquan Gao Qingyin Wang 2009Fish and Shellfish Immunology2009,,1:1
17Morphology design of microporous organic polymers and their potential applications:an overview显示文摘Microporous organic polymers(MOPs) have attracted considerable research interest because of their well-defined porosity,high surface area, lightweight nature, and tunable surface chemistry. The morphology of MOPs are demonstrated to play a significant role in various applications although limited examples manifesting the importance of the MOP morphology in numerous applications have been reported. This review summarizes the recent progress in the design of MOPs using different techniques, including hard and soft template and direct synthesis methods. In addition, their applications, which possibly attribute to their shape, are discussed. Furthermore, the advantages and disadvantages of different methods are discussed, as well as their development and future challenges.qingyin li shumaila razzaque shangbin jin bien tan 2017Science China Chemistry2017,60,8:1
18Assembling of tungstovanadogermanic heteropoly acid into mesoporoes molecular sieve SBA-15显示文摘Hongxiao Jin Qingyin Wu 2005Solid State Science2005,7,:1
19Efficient degradation of dye pollutants on nanoporous Polyoxotungstate-anatase composite under visiblelight irradiation显示文摘YANG Yu WU Qingyin GUO Yihang 2005Journal of Molecular Catalysis A : Chemical2005,225,:1
20Progress of the research on the thermostability of heteropoly compounds显示文摘Wu Qingyin Cao Lei Feng Wenqi 2004Received2004,,12:1
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