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1Effects of dietary arginine levels on growth performance,body composition, serum biochemical indices and resistance ability against ammonia-nitrogen stress in juvenile yellow catfish(Pelteobagrus fulvidraco)显示文摘This experiment was conducted to investigate the effects of dietary arginine levels on growth performance, body composition, serum biochemical indices and resistance ability against ammonia-nitrogen stress in juvenile yellow catfish(Pelteobagrus fulvidraco). Five isonitrogenous and isolipidic diets(42%protein and 9% lipid) were formulated to contain graded levels of arginine(2.44%, 2.64%, 2.81%, 3.01% and3.23% of diet), by supplementing L-Arginine HCI. Seven hundred juvenile yellow catfish with an initial average body weight of 1.13 ± 0.02 g were randomly divided into 5 groups with 4 replicates of 35 fish each and each group was fed one of the diets. After 56 d feeding, fish were exposed to 100 mg/L of ammonia-nitrogen for 72 h. The results showed that weight gain(WG) and specific growth rate(SGR) in2.64% and 2.81% groups were significantly higher than those in 3.23% group(P < 0.05). The feed conversation ratio(FCR) in 2,64%, 2,81% and 3.01% groups was significantly decreased when compared with3,23% group. The protein efficiency ratio(PER) in 2.64% group was significantly higher than that in 2.44%and 3.23% groups(P < 0.05). The condition factor(CF) of fish was significantly higher in 2.81% group than that in 2,44% group(P < 0.05). Dietary arginine levels had no significant effect on hepatosomatic index(HSI), viscerosomatic index(VSI), and whole-body dry matter, crude protein, crude lipid, ash contents, as well as serum total protein(TP), triglyceride(TG), glucose(GLU), urea nitrogen(UN) contents and aspartate aminotransferase(AST), alanine aminotransferase(ALT) activities(P> 0.05). After the fish were challenged to ammonia-nitrogen for 72 h, their cumulative mortality rate in 2.81% group was significantly lower than that in 2.44% group(P < 0.05). The results suggested that dietary arginine level at 2.81%could optimize anti-ammonia-nitrogen stress ability of juvenile yellow catfish and a level of 3.23%arginine seemed to depress the growth performance of fish and decreased their tolerance to the ammonia-nitrogen stress under current study. A quadratic regression analysis based on WG indicated that the optimal dietary arginine requirement of juvenile yellow catfish was estimated to be 2.74% of the diet(6.45% of dietary protein) under current culture conditions.Qiming Chen Hongxia Zhao Yanhua Huang Junming Cao Guoxia Wang Yuping Sun Yongjuan Li 2016Animal Nutrition2016,,3:19
2Diversity and high nitrogenase activity of endophytic diazotrophs isolated from Oryza rufipogon Griff.显示文摘Diversity and nitrogenase activity of endophytic diazotrophs colonized in the wild rice Oryza rufipogon Griff grown in Boluo, Huilai County in Guangdong Province and Lingshui County in Hainan Province were studied. Thirty-seven isolates obtained from Oryza rufipogon were identified as putative endophytic nitrogen-fixing bacteria by ARA (acetylene reduction assay) test and further confirmed by PCR amplification of nifH gene fragments. All obtained strains have ARA activity and the same sized nifH gene fragments. Above the similarity level of 80%, the obtained isolates were assigned as Group Ⅰ to Ⅷ by the clustering of IS-PCR fingerprints. The SDS-PAGE whole-cell protein patterns were similar to those of IS-PCR fingerprints. Components and contents of fatty acid methyl esters (FAMEs) were used to differentiate the representative strains (Ls13, Ls8, BL1, BL12, HL6, Ls4) from Group Ⅰ to Group Ⅵ. The six representative strains showed significant difference in contents and components of cellular fatty acid methyl ester. 16S rDNA sequencing analysis showed that strains of Group Ⅰ to Ⅶ were located in Enterobacteraceae (γ-proteobacteria). Strains of Group Ⅰ and Group II were closely related to Klebsiella sp.; Strain Ls8 of Group Ⅱ was a little far away from the genus of Pantoea (homology level 96% with Pantoea agglomerans), which may represent a new species or genus in Enterobacteraceae; Strains of Groups IV and V belonged to different Enterobacter sp.; Strain Ls4 and Ls 9 representing Group Ⅵ were close to Citrobacter amalonaticus with 98% sequence similarity; Strain Ls15 of Group Ⅶ showed 98% sequence identity with Pantoea sp.; Strains of Group Ⅷ were assigned to the genus Ideonella (β-proteobacteria). Based on the above results, endophytic diazotrophs isolated from O. rufipogon showed great diversity and some diazotrophs showed high nitrogenase activity with 42.52 μmol/mL·h C2H4. Inoculation to rice tests indicated that the isolated endophytic diazotrophs significantly promoted the rice growth.TAN ZhiYuan PENG GuiXiang XU PeiZhi AI ShaoYing TANG ShuanHu ZHANG GuoXia ZENG FengYun 2009Chinese Science Bulletin2009,54,16:14
3Distributions of chlorophyll a and carbon fixed strength of phyto-plankton in autumn of the southern Huanghai Sea waters显示文摘Chlorophyll a (Chl a) concentration and primary productivity (PP), namely, carbon fixed strength of phytoplankton along four transects in the southern Huanghai Sea (SHS) were studied for their distribution features and controlling mechanisms based on the investigations from 17 October to 3 November 2005. The Chl a concentration in the study waters dynamically changed spatially. Surface Chl a concentrations ranged from 0.11 to 2.38 mg/m 3 with higher and lower values observed in the nutrient-laden inshore waters and central part of the SHS occupied by oligotrophic current, respectively. The vertical distribution of Chl a concentration showed a predominant pattern of subsurface concentration maximum profile. It followed the previous result of the deep dissolved oxygen concentration maximum profile, which was significantly correlated with phytoplankton and regional water mass. The primary productivity of carbon in autumn of the SHS, ranging from 95 to 1 634 mg/(m 2 ·d) mainly varied with nutrient condition, especially phosphate concentration in seawater and hydrological condition. Furthermore, associating the present study results together with previous studies, the annual value of carbon fixed production of phytoplankton in the entire marginal seas of East China (including the Bohai Sea, the Huanghai Sea and the East China Sea) was estimated to be 222 Mt, which accounted for 2% of that in the global margins. Besides, it was as 16.2 times as the annual value of apparent carbon sink strength (13.96 Mt) in the marginal seas of East China. This multiple was different in different sea areas (3.0 in the Bohai Sea, 6.7 in the Huanghai Sea and 81.6 in the East China Sea).ZHENG Guoxia SONG Jinming DAI Jicui WANG Yiming 2006Acta Oceanologica Sinica2006,25,3:13
4Development of an activity-directed selection system enabled significant improvement of the carboxylation efficiency of Rubisco显示文摘光合的公司 < 潜水艇 class= “ a-plus-plus ” > 2 固定是在地球上的器官的碳的最终的来源并且因此为庄稼生产和碳隐遁是必要的。Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco ) 催化光合的公司的第一步 < 潜水艇 class= “ a-plus-plus ” > 2 固定。然而, Rubisco 的极端低 carboxylation 效率为改进光合的效率使它成为最吸引人的目标。广泛的研究集中了于重新设计更有效的酶,而是努力被它的结构功能关系的有限理解和一个有效选择系统的缺乏向它的活动阻碍了。探讨 Rubisco 的失败的分子的工程,我们开发了在那里完全连接宿主房间的生长到 Rubisco 活动的一个 Escherichia 基于 coli 的指导活动的选择系统。Synechococcus sp。与在小子单元的 E49V 和 D82G 替换变异的 PCC7002 Rubisco 被一个轮进化从 15,000 异种的一个总数选择。这异种证明 85% 向公司在催化效率在特定的 carboxylation 活动和 45% 改进增加 < 潜水艇 class= “ a-plus-plus ” > 2 。小子单元的 E49V 变化被推测通过和大子单元的 Q225 的相互作用影响 holoenzyme 催化作用。这个相互作用从更高的植物和 Chlamydomonas reinhardtii 在各种各样的 Rubisco 之中被保存。这些的知识可能为从更高的植物设计 Rubisco 提供线索,与增加庄稼收益的潜力。Zhen Cai Guoxia Liu Junli Zhang Yin Li 2014Protein & Cell2014,5,7:12
5Geochemical records of phosphorus in Jiaozhou Bay sediments—Impli-cations for environmental changes in recent hundred years显示文摘Phosphorus is a key element and plays an important role in global biogeochemical cycles. The evolution of sedimentary environment is also influenced by phosphorus concentrations and fractions as well as phosphate sorption characteristics of the marine sediments. The geochemical characteristics of phosphorus and their environmental records were presented in Jiaozhou Bay sediments. Profiles of different forms of phosphorus were measured as well as the roles and vertical distributions of phosphorus forms in response to sedimentary environment changes were investigated. The results showed that inorganic phosphorus (IP) was the major fraction of total phosphorus (TP); phosphorus which is bound to calcium, iron and occluded phosphorus, as well as the exchangeable phosphorus were the main forms of IP, especially calcium-phosphorus, including detrital carbonate-bound phosphorus (Det-P) and authigenic apatite-bound phosphorus (ACa-P), are the uppermost constituent of IP in Jiaozhou Bay sediments. Moreover, the lead-210 chronology technology was employed to estimate how much phosphorus was buried ultimately in sediments. And the research showed that the impacts of human activities have increased remarkably in recent years especially between the 1980s and 2000. According to research, the development of Jiaozhou Bay environment in the past hundred years can be divided into three stages: (1) before the 1980s characterized by the relatively low sedimentation rate, weak land-derived phosphorus inputs and low anthropogenic impacts; (2) from the 1980s to around 2000, accelerating in the 1990s, during which high sedimentation rates, high phosphorus abundance and burial fluxes due to the severe human activities impacted on the whole environmental system; (3) after 2000, the period of the improvement of environment, the whole system has been improved including the decreasing sedimentation rates, concentration and the burial fluxes of phosphorus.DAI Jicui SONG Jinming LI Xuegang YUAN Huamao ZHENG Guoxia LI Ning 2007Acta Oceanologica Sinica2007,26,4:8
6The potential of using blood circular RNA as liquid biopsy biomarker for human diseases显示文摘Circular RNA(circRNA)is a novel class of single-stranded RNAs with a closed loop structure.The majority of circRNAs are formed by a back-splicing process in pre-mRNA splicing.Their expression is dynamically regulated and shows spatiotemporal patterns among cell types,tissues and developmental stages.CircRNAs have important biological functions in many physiological processes,and their aberrant expression is implicated in many human diseases.Due to their high stability,circRNAs are becoming promising biomarkers in many human diseases,such as cardiovascular diseases,autoimmune diseases and human cancers.In this review,we focus on the translational potential of using human blood circRNAs as liquid biopsy biomarkers for human diseases.We highlight their abundant expression,essential biological functions and significant correlations to human diseases in various components of peripheral blood,including whole blood,blood cells and extracellular vesicles.In addition,we summarize the current knowledge of blood circRNA biomarkers for disease diagnosis or prognosis.Guoxia Wen Tong Zhou Wanjun Gu 2021Protein & Cell2021,12,12:8
7Big Grain3, encoding a purine permease, regulates grain size via modulating cytokinin transport in rice显示文摘Grain size is an important agronomic trait affecting grain yield,but the underlying molecular mechanisms remain to be elucidated.Here,we isolated a dominant mutant,big grainy(bg3-D),which exhibits a remarkable increase of grain size caused by activation of the PURINE PERMEASE gene,OsPUP4.BC3/OSPUP4 is predominantly expressed in vascular tissues and is specifically suppressed by exogenous cytokinin application.Hormone profiling revealed that the distribution of different cytokinin forms,in roots and shoots of the bg3-D mutant,is altered.Quantitative reverse transcription-PCR(qRT-PCR)analysis indicated that expression of rice cytokinin type-A RESPONSE REGULATOR(OsRR)genes is enhanced in the roots of the bgj-D mutant.These results suggest that OSPUP4 might contribute to the long-distance transport of cytokinin,by reinforcing cytokinin loading into vascular bundle cells.Furthermore,plants overexpressing OsPUP7,the closest homolog of OsPUP4,also exhibited a similar phenotype to the bg3-D mutant.Interestingly,subcellular localization demonstrated that OSPUP4 was localized on the plasma membrane,whereas OSPUP7 was localized to the endoplasmic reticulum.Based on these findings,we propose that OSPUP4 and OSPUP7 function in a linear pathway to direct cytokinin cell-to-cell transport,affecting both its long-distance movement and local allocation.Yunhua Xiao Dapu Liu Guoxia Zhang Shaopei Gao Linchuan Liu Fan Xu Ronghui Che Yiqin Wang Hongning Tong Chengcai Chu 2019Journal of Integrative Plant Biology2019,61,5:7
8Microelement analysis of source of raw materials of terracotta warriors and horses of Qin's Mausoleum in pits No.1 and No.2显示文摘In order to search for sources of the raw material of the Qin’s terracotta warriors and horses, we selected 20 samples of pottery warriors and pottery horses of the Qin’s Mausoleum from pit No. 1,19 samples of pottery warriors and brick from pit No. 2, 20 samples of clays near the Qin’s Mausoleum and 2 samples of Yaozhou porcelain bodies. The 32 kinds of element content of each sample were measured by neutron activation analysis (NAA). These data were analyzed by fuzzy cluster analysis, the trend cluster analysis diagram was obtained. The results showed that samples of terracotta warriors and horses from pits No.1 and No. 2 were closely related to the loam layer near Qin’s Mausoleum, but their relations with the loess layers were not so close, and they were out of all relation to Yaozhou porcelain bodies. Thus, it could be deduced that the Li Mountain clay may be considered as the original place of the raw materials of the terracotta warriors and horses, the kiln sites might be located nearby the Qin’sWeijuan Zhao Aijun Xu Rongwu Li Zhengyao Gao Guoxia Li Jianzhong Xie Guohe Han Songlin Feng Dongyu Fan Ying Zhang et al. 2002Chinese Science Bulletin2002,47,16:6
9Fuzzy cluster analysis of the provenance of ancient Yaozhou porcelain body显示文摘The technique of neutron activation analysis (NAA) has been employed to measure the content of 29 kinds of elements in the sample of Yaozhou porcelain bodies. Then a fuzzy cluster analysis has been conducted to the NAA data and a diagram of the dynamic fuzzy cluster analysis has been achieved. The results indicate that the batch of ancient Yaozhou porcelain bodies, which were of different overglaze color and were produced by different kilns during a period of over 800 years from the Tang Dynasty (618—907 A.D.) to the Yuan Dynasty (1271—1368 A.D.), has shared a stable and concentrated raw material source. Provenances of por-celain bodies from different times, though having their spe-cific independence, enjoy a close relationship and are not far from one another. Provenances of porcelain bodies made during the Tang Dynasty and the Five Dynasties (907—960 A.D.) are found to be closer to one another, while those of the Song (960—1279 A.D.) and the Jin Dynasty (1115—1234 A.D.) are comparatively concentrated in certain areas and are dif-ferent from those of the Tang Dynasty. Both the tri-colored glazed pottery made in Yaozhou kilns during the Tang Dy-nasty and the Yaozhou porcelain bodies of the Tang period are from the same provenance.LI Guoxia1, ZHAO Weijuan1, LI Rongwu2, XIE Jianzhong1, FENG Songlin3, FAN Dongyu3, ZHANG Ying3, CAI Zhifang3, ZHUO Zhenxi4 & GAO Zhengyao1 1. Faculty of Physical Engineering, Zhengzhou University, Zhengzhou 450052, China 2. Department of Physics, Beijing Normal University, Beijing 100875, China 3. High Energy Physics Institute, the Chinese Academy of Sciences, Beijing 100080, China 4. Archaeology Research Institute, Shanxi Province, Xian 710000, China Correspondence should be addressed to Li Guoxia (e-mail: Liguoxia@ zzu.edu.cn) 2003Chinese Science Bulletin2003,48,1:5
10Effect of Water Washing Pre-treatment on the Properties of Glass-ceramics from Incinerator Fly Ash Using Electronic Arc Furnace显示文摘Production of glass-ceramics by sintering the molten slag obtained from electric arc furnace treatment of fly ash was investigated. The effect of washing pretreatment prior to melting the fly ash on the microstructure and properties of the glass-ceramics was examined. The results show that washing pretreatment of fly ash can decrease alkali metal chloride and increase network former in fly ash, which results in the increase of peak crystallization temperature of parent glass and strengthening of properties of bending strength and chemical stability of the glass-ceramics. The optimal heat treatment temperature for parent glass of washed fly ash is 1 173 K, at which the crystalline phase of glass-ceramics is composed of gelignite (Ca2Al2SiO7) and akermanite (Ca2MgSi2O7). Glass-ceramics produced at optimal heat treatment temperature are excellent in term of the physical and chemical properties and leaching characteristics, indicating attractive potential as substitute of nature materials.刘汉桥 WEI Guoxia ZHANG Rui 2013Journal of Wuhan University of Technology(Materials Science)2013,28,1:5
11Assessing the premature death due to ambient particulate matter in China's urban areas from 2004 to 2013显示文摘Guoxia MA Jinnan WANG Fang YU Xiaomin GUO Yanshen ZHANG Chao LI 2016Frontiers of Environmental Science & Engineering2016,10,5:4
12Impacts of Migration on Urban Environmental Pollutant Emissions in China: A Comparative Perspective显示文摘In recent years,researchers have devoted considerable attention to identifying the causes of urban environmental pollution.To determine whether migrant populations significantly affect urban environments,we examined the relationship between urban environmental pollutant emissions and migrant populations at the prefectural level using data obtained for 90 Chinese cities evidencing net in-migration.By dividing the permanent populations of these cities into natives and migrants in relation to the population structure,we constructed an improved Stochastic Impacts by Regression on Population,Affluence and Technology model(STIRPAT)that included not only environmental pollutant emission variables but also variables on the cities’attributes.We subsequently conducted detailed analyses of the results of the models to assess the impacts of natives and migrants on environmental pollutant emissions.The main findings of our study were as follows:1)Migrant populations have significant impacts on environmental emissions both in terms of their size and concentration.Specifically,migrant populations have negative impacts on Air Quality Index(AQI)as well as PM2.5 emissions and positive impacts on emissions of NO2 and CO2.2)The impacts of migrant populations on urban environmental pollutant emissions were 8 to 30 times weaker than that of local populations.3)Urban environmental pollutant emissions in different cities differ significantly according to variations in the industrial structures,public transportation facilities,and population densities.WANG Guoxia SHI Xiaowei CUI Haiyan JIAO Jing 2020Chinese Geographical Science2020,30,1:4
13Cost-benefit analysis of China’s Action Plan for Air Pollution Prevention and Control显示文摘China’s rapid economic growth has caused severe air pollution and public health problems.Therefore,the Chinese government launched the Action Plan for Air Pollution Prevention and Control(hereinafter referred to as the“Air Plan”)in 2013-2017 to improve air quality and safeguard public health.In this study,an analytical framework for a cost-benefit analysis applicable to China was constructed,and the costs and benefits of the implementation of the“Air Plan”in 30 cities and provinces in China from 2013 to 2017 were evaluated.Results show that the total cost of implementation of the“Air Plan”is 1.6511 trillion RMB.The benefits of air quality improvement were determined to be 2.4691 trillion RMB through the willingness-to-pay method to calculate the economic loss of premature deaths.The net benefit related to the implementation of the“Air Plan”was 818 billion RMB.The public health benefit of air quality improvement was 1.5 times the cost of the nationwide implementation of the“Air Plan”.At the provincial level,net benefits that reach 279.3 billion RMB were the highest in Guangdong,whereas the benefit-cost ratio,where the benefit was 5.5 times the cost,was the highest in Fujian.Estimations in this study can serve as a reference for China in formulating similar environmental policies and implementing the “3-year Plan to Defend the Blue Sky”.In addition,these estimations have practical significance for advancing the long-term effective mechanisms of the cost-benefit analysis of China5s environmental policies.Jing ZHANG Hongqiang JIANG Wei ZHANG Guoxia MA Yanchao WANG Yaling LU Xi HU Jia ZHOU Fei PENG Jun BI Jinnan WANG 2019Frontiers of Engineering Management2019,6,4:4
14Synthesis of Refractory Cordierite from Calcined Bauxite, Talcum and Quartz显示文摘A cordierite was synthesized from calcined bauxite, talcum, and quartz. The properties and microstructure of the cordierite sintered samples were characterized by Archimedes' method, thermal dilatometry, X-ray diffraction (XRD), scanning electron microscopy (SEM), and so on. The experimental results showed that calcined bauxite could broaden the range of synthesizing temperature from 1300 ℃ to 1420 ℃ and get pure cordierite. The bulk density and linear thermal expansion coefficient of the sample synthesized at 1420 ℃ for 2 h were 1.97 g cm-3 and 2.1×10-6 ℃-1, respectively. The XRD analysis showed that the major crystalline phase was α-cordierite with almost no glassy matters, the SEM images illustrated a small vent hole and the size were 5-100 μm, the well-grown hexagonal and granular cordierite grains had the sizes distributed among 0.1-8 μm, and providing high mechanical strength and lower linear thermal expansion coefficient.吴建锋 FANG Binzheng XU Xiaohong XU Xiaoyang ZHENG Shuqing YI Guoxia 2013Journal of Wuhan University of Technology(Materials Science)2013,28,2:4
15Feasibility study for joint retrieval of air density and ozone concentration profiles in the mesosphere using an ultraviolet limb-scan technique显示文摘For joint retrieval of vertical distributions of both air density and ozone concentration in the mesosphere which are two of the most important atmospheric parameters in this region,a retrieval scheme is suggested by using satellite limb scan observation at two UV wavelengths,i.e. 255 nm and 296 nm . The retrieval scheme is the modification of the direct method by Aruga and Heath with two UV wavelengths and two atmospheric parameters. Feasibility study was made based on simulated limb scan radiances computed with a single scattering radiative transfer algorithms of spherical geometry developed by the present authors and the inversion technique. Results of the simulations show that it is feasible to retrieve air density and ozone concentration vertical distributions on a global basis from satellite UV limb scan over the altitude range of 50 km ~ 100 km with a vertical resolution of 1 km. The errors of the inferred profiles by using the joint inversion algorithm are greatly deduced,especially in the upper-mesosphere heights,compared with those by using the single inversion technique with a single wavelength.GUOXia LUYao LU^eDaren 2004Progress in Natural Science:Materials International2004,14,6:3
16A cryptic inhibitor of cytokinin phosphorelay controls rice grain size显示文摘Plant hormone cytokinin signals through histidine-aspartic acid(H-D)phosphorelay to regulate plant growth and development.While it is well known that the phosphorelay involves histidine kinases,histidine phosphotransfer proteins(HPs),and response regulators(RRs),how this process is regulated by external components remains unknown.Here we demonstrate that protein phosphatase with kelch-like domains(PPKL1),known as a signaling component of steroid hormone brassinosteroid,is actually a cryptic inhibitor of cytokinin phosphorelay in rice(Oryza sativa).Mutation at a specific amino acid D364 of PPKL1 activates cytokinin response and thus enlarges grain size in a semi-dominant mutant named s48.Overexpression of PPKL1 containing D364,either with the deletion of the phosphatase domain or not,rescues the s48 mutant phenotype.PPKL1 interacts with OsAHP2,one of authentic HPs,and D364 resides in a region resembling the receiver domain of RRs.Accordingly,PPKL1 can utilize D364 to suppress OsAHP2-to-RR phosphorelay,whereas mutation of D364 abolishes the effect.This function of PPKL1 is independent of the phosphatase domain that is required for brassinosteroid signaling.Importantly,editing of the D364-residential region produces a diversity of semi-dominant mutations associated with variously increased grain sizes.Further screening of the edited plants enables the identification of two genotypes that confer significantly improved grain yield.Collectively,our study uncovers a noncanonical cytokinin signaling suppressor and provides a robust tool for seed rational design.Dapu Liu He Zhao Yunhua Xiao Guoxia Zhang Shouyun Cao Wenchao Yin Yangwen Qian Yanhai Yin Jinsong Zhang Shouyi Chen Chengcai Chu Hongning Tong 2022Molecular Plant2022,15,2:3
17Neutron activation analysis and Mossbauer spectroscopy research on coloring mechanism of Chinese Ru porcelain显示文摘The characteristic spectrum and its main wavelength of Ru porcelain glaze are measured by color difference instrument to determine the relations between glaze color and its main wavelength. The content of the 30 coloring elements in Ru porcelain is determined by neutron activation analysis (NAA), which showed that iron is the major coloring element. Mossbauer spectroscopy analysis shows that the iron element in the glaze exists in the form of structural iron (Fe2+, Fe3+). The quantitative relationship between the main wavelength of glaze in various colors and the relative content of structural iron (Fe2+/Fe3+) is determined. Thus the coloring mechanism of Ru porcelain is investigated entirely.LI Rongwu YANG Lei LI Guoxia ZHAO Weijuan GAO Zhengyao XIE Jianzhong CHEN Jin ZHANG Bin SUN Xinmin FENG Songlin JIA Xiuqin HAN Song HUANG Zhongxiang 2002Chinese Science Bulletin2002,47,14:2
18Improved Electrochemical Performance Based on Nanostructured SnS_2@CoS_2–rGO Composite Anode for Sodium-Ion Batteries显示文摘A promising anode material composed of SnS_2@CoS_2 flower-like spheres assembled from SnS_2 nanosheets and CoS_2 nanoparticles accompanied by reduced graphene oxide(rGO) was fabricated by a facile hydrothermal pathway. The presence of rGO and the combined merits of SnS_2 and CoS_2 endow the SnS_2@-CoS_2–rGO composite with high conductivity pathways and channels for electrons and with excellent properties as an anode material for sodium-ion batteries(SIBs). A high capacity of 514.0 mAh g^(-1) at a current density of200 m A g^(-1) after 100 cycles and a good rate capability can be delivered. The defined structure and good sodium-storage performance of the SnS_2@CoS_2–rGO composite demonstrate its promising application in high-performance SIBs.Xia Wang Xueying Li Qiang Li Hongsen Li Jie Xu Hong Wang Guoxia Zhao Lisha Lu Xiaoyu Lin Hongliang Li Shandong Li 2018Nano-Micro Letters2018,10,3:2
19The U-box ubiquitin ligase TUD1 promotes brassinosteroid-induced GSK2 degradation in rice显示文摘Brassinosteroids(BRs)are a class of steroid hormones with great potential for use in crop improvement.De-repression is usually one of the key events in hormone signaling.However,how the stability of GSK2,the central negative regulator of BR signaling in rice(Oryza sativa),is regulated by BRs remains elusive.Here,we identify the U-box ubiquitin ligase TUD1 as a GSK2-interacting protein by yeast two-hybrid screening.We show that TUD1 is able to directly interact with GSK2 and ubiquitinate the protein.Phenotypes of the tud1 mutant are highly similar to those of plants with constitutively activated GSK2.Consistent with this finding,GSK2 protein accumulates in the tud1 mutant compared with the wild type.In addition,inhibition of BR synthesis promotes GSK2 accumulation and suppresses TUD1 stability.By contrast,BRs can induce GSK2 degradation but promote TUD1 accumulation.Furthermore,the GSK2 degradation process is largely impaired in tud1 in response to BR.In conclusion,our study demonstrates the role of TUD1 in BR-induced GSK2 degradation,thereby advancing our understanding of a critical step in the BR signaling pathway of rice.Dapu Liu Xiaoxing Zhang Qingliang Li Yunhua Xiao Guoxia Zhang Wenchao Yin Mei Niu Wenjing Meng Nana Dong Jihong Liu Yanzhao Yang Qi Xie Chengcai Chu Hongning Tong 2023Plant Communications2023,4,2:2
20Neutron activation analysis and Mdssbauer spectroscopy research on coloring mechanism of ancient Chinese Guan porcelain显示文摘The content of 30 kinds of coloring elements in Guan porcelain in the Southern Song Dynasty has been determined by neutron activation analysis (NAA). Iron is the major coloring element. Mossbauer spectroscopy has shown that the iron of the glaze exists in the form of structural iron (Fe2+, Fe3+). The quantitative relationship between the main wavelength of every color glaze and the relative content (Fe2+/Fe3+) of structural iron has been determined. Thus the coloring mechanism of Guan porcelain in the Southern Song Dynasty has been revealed entirely.ZHAO Weijuan, LI Guoxia, GAO Zhengyao, ZHANG bin, LI Rongwu, WU Xiaoli, YAO Guifang, JIA Xiuqin, HAN Song & HUANG Zhongxiang1. Department of Physics, Zhengzhou University, Zhengzhou 450052, China 2. Department of Architecture, Zhengzhou Technology University, Zhengzhou 450002, China 3. Department of Physics, Beijing Normal University, Beijing 100875, China 4. Hangzhou Museum of Guan kiln, Hangzhou 310008, China 5. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100080, China 2000Chinese Science Bulletin2000,45,20:2
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