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| 1 | High-entropy ceramics:Present status,challenges,and a look forward显示文摘High-entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal elements.Although in the infant stage,the emerging of this new family of materials has brought new opportunities for material design and property tailoring.Distinct from metals,the diversity in crystal structure and electronic structure of ceramics provides huge space for properties tuning through band structure engineering and phonon engineering.Aside from strengthening,hardening,and low thermal conductivity that have already been found in high-entropy alloys,new properties like colossal dielectric constant,super ionic conductivity,severe anisotropic thermal expansion coefficient,strong electromagnetic wave absorption,etc.,have been discovered in HECs.As a response to the rapid development in this nascent field,this article gives a comprehensive review on the structure features,theoretical methods for stability and property prediction,processing routes,novel properties,and prospective applications of HECs.The challenges on processing,characterization,and property predictions are also emphasized.Finally,future directions for new material exploration,novel processing,fundamental understanding,in-depth characterization,and database assessments are given. | Huimin XIANG Yan XING Fu-zhi DAI Hongjie WANG Lei SU Lei MIAO Guojun ZHANG Yiguang WANG Xiwei QI Lei YAO Hailong WANG Biao ZHAO Jianqiang LI Yanchun ZHOU | 2021 | Journal of Advanced Ceramics2021，10，3： | 28 |
| 2 | Association study of the endothelial nitric oxide synthase gene polymorphisms with essential hypertension in northern Han Chinese显示文摘背景氮的氧化物(没有) 由氮的氧化物 synthase (eNOS ) 玩的 endothelial 综合了在两个的一个重要角色 endothelial 功能的规定和血压的控制。直到现在,在那里关于在 eNOS 基因和必要高血压的三临床上相关的多型性(T-786C, intron4b/a 和 G894T ) 之间的协会一直在冲突数据。用北汉汉语,检验三 eNOS 基因多型性的贡献到高血压的发展的方法包括 503hypertensive 盒子和 490 年龄的盒子控制研究 -- ,性 -- ,并且从 InternationalCollaborative 招募的匹配区域的控制在亚洲(InterASIA ) 心血管的疾病学习被进行。Genotyping 被聚合酶链反应(PCR ) 或 PCR 限制碎片长度多型性(RFLP ) 执行。结果 T-786C 和 intron4b/a 多型性在重要连接不平衡被观察(D “ =0.87, P <
0.001 ) 。在健康控制的这三多型性的次要的等位基因频率是比白种人的那些低得多的(9.3% 对 39.6%-42.0% , 8.9% 对为 -786C, intron4a 和 894T 的 15.0%-16.0% 和 10.9%vs34.5%-34.9% ,分别地) 。遗传型分布和三多型性的等位基因频率没在盒子和控制之间不同(所有 P >
0.05 ) 。Inaddition,任何一个都显著地没八估计的 haplotypes 增加或减少在为几个已知的风险因素的调整前后的高血压的风险。学习结果的结论建议三 eNOS 基因多型性是不大可能的是为在北汉中国人口的必要高血压的主要基因危险性因素。 | ZHAO Qi SU Shao-yong CHEN Shu-feng LI Biao GU Dong-feng | 2006 | Chinese Medical Journal2006，，13： | 17 |
| 3 | OsRFPH2-10, a RING-H2 Finger E3 Ubiquitin Ligase, Is Involved in Rice Antiviral Defense in the Early Stages of Rice dwarf virus Infection显示文摘 | Lifang Liu Lian Jin Xiahe Huang Yongtao Geng Feng Li Qingqing Qin Rui Wang Shaoyi Ji Shanshan Zhao Qi Xie Chunhong Wei Can Xie Biao Ding Yi Li | 2014 | Molecular Plant2014，7，6： | 11 |
| 4 | Impacts of revegetation management modes on soil properties and vegetation ecological restoration in degraded sandy grassland in farming-pastoral ecotone显示文摘Focusing on the impact of various vegetation management modes on sandy grassland's soil property and vegetation ecological restoration of farming-pastoral ecotone,field surveys and lab analysis were conducted to study the correlation between the characteristics of soil properties and vegetation ecological restoration under four different vegetation management modes,i.e.,unenclosed natural restoration,enclosed natural restoration,unenclosed artificial restoration and enclosed artificial restoration,which have a restoration history of 15 years in the southern edge of the degraded sandy land area of Mu Us Desert in Leilongwan Town,Hengshan County,Shaanxi Province.After 15 years of vegetation restoration,these four vegetation management modes all proved to be useful for improving the vegetation ecological restoration and the soil quality of the degraded sandy grassland not only by enhancing the aboveground vegetation height,coverage and biomass but also increasing the content of soil clay,organic matter,CEC,total nitrogen,available nutrient while reducing soil bulk density.The vegetation ecological restoration effect and soil quality under enclosed or artificial restoration management are better than those of unenclosed or natural restoration management;and the most satisfactory vegetation ecological restoration effects and soil quality can be achieved under the integration of enclosed and artificial restoration management.Severely degraded sandy grassland,during the vegetation restoration,would form an interactional coordinating relationship with the vegetation and soil properties.Vegetation properties as height,coverage and biomass have significant positive correlations with organic matter,CEC,total nitrogen and available nitrogen,phosphorus,and potassium contained in soil.Only the adoption of the strict enclosure system,implementation of aggressive artificial vegetation restoration measures and the realization of the regurgitation-feeding policy of industry towards husbandry can guarantee the gradual restoration of degraded sandy grassland in farming-pastoral ecotone,so that it can continue to play the role of ecological protective screen. | Fu Biao Qi Yanbing Chang Qingrui | 2015 | International Journal of Agricultural and Biological Engineering2015，8，1： | 10 |
| 5 | Chitosan Extends the Shelf-life of Filleted Tilapia (Oreochromis niloticus) During Refrigerated Storage显示文摘Shelf-life extension of aquatic products is of significant economical importance. To determine the potential effect of chitosan on the shelf-life of filleted tilapia, this study analyzed the bacterial community diversity in fresh and spoiled tilapia fillets stored at (4 ± 1)℃ and examined the antimicrobial activity of chitosan against relevant bacteria isolates. Results showed that Pseudomonas (20%) and Aeromonas (16%) were abundant in fresh tilapia fillets, whereas Pseudomonas (52%), Aeromonas (32%) and Staphylococcus (12%) were dominant in the spoiled samples. Chitosan showed wide-spectrum antibacterial activity against bacteria isolated from tilapia and 5.0 g L-1 chitosan was selected for application in preservation. We further determined the shelf-life of chitosan-treated, filleted tilapia stored at (4 ± 1)℃ based on microbiological, biochemical and sensory analyses. Results showed that the shelf-life of chitosan-treated, filleted tilapia was extended to 12 d, whereas that of untreated, control samples was 6 d. These indicate that chitosan, as a natural preservative, has great application potential in the shelf-life extension of tilapia fillets. | CAO Rong LIU Qi YIN Bangzhong WU Biao | 2012 | Journal of Ocean University of China2012，11，3： | 9 |
| 6 | Effect of proteolytic starter culture isolated from Chinese Dong fermented pork(Nanx Wudl)on microbiological,biochemical and organoleptic attributes in dry fermented sausages显示文摘The effect of a proteolytic starter culture isolated from Nanx Wudl,on microbiological,biochemical and organoleptic attributes of dry fermented sausages was investigated during processing.Based on preliminary screening,the combination of Staphylococcus xylosus SX16 and Lactobacillus plantarum CMRC6,showing excellent proteolytic activity in vitro,was selected as the multi-strain starter(starter LS).For comparison,the single-strain starter culture of L.plantarum CMRC6(starter LB)and non-inoculated control were also tested.During fermentation,lactic acid bacteria and staphylococci dominated the microbiota and suppressed the Enterobacteriaceae growth in LS-inoculated sausages.The addition of LS starter accelerated acidification and proteolysis during ripening,improving the contents of total free amino acids and several essential free amino acids(Phe,Ile and Leu).Volatile compounds analysis revealed that LS-fermented sausage showed the highest abundance of 3-methyl-1-butanol,probably due to the inoculated S.xylosus.The inoculation of LS starter improved the sensory properties of sausages,especially the flavor attribute.Therefore,S.xylosus SX16 and L.plantarum CMRC6 are promising candidates for inclusion as multi-strain starters in the manufacture of gourmet fermented dry sausage. | Xi Chen Ruifang Mi Biao Qi Suyue Xiong Jiapeng Li Chao Qu Xiaoling Qiao Wenhua Chen Shouwei Wang | 2021 | Food Science and Human Wellness2021，10，1： | 9 |
| 7 | Use of land's cooperative object to estimate UAV's pose for autonomous landing显示文摘The research of unmanned aerial vehicles’(UAVs’)autonomy navigation and landing guidance with computer vision has important signifcance.However,because of the image blurring,the position of the cooperative points cannot be obtained accurately,and the pose estimation algorithms based on the feature points have low precision.In this research,the pose estimation algorithm of UAV is proposed based on feature lines of the cooperative object for autonomous landing.This method uses the actual shape of the cooperative-target on ground and the principle of vanishing line.Roll angle is calculated from the vanishing line.Yaw angle is calculated from the location of the target in the image.Finally,the remaining extrinsic parameters are calculated by the coordinates transformation.Experimental results show that the pose estimation algorithm based on line feature has a higher precision and is more reliable than the pose estimation algorithm based on points feature.Moreover,the error of the algorithm we proposed is small enough when the UAV is near to the landing strip,and it can meet the basic requirements of UAV’s autonomous landing. | Xu Guili Qi Xiaopeng Zeng Qinghua Tian Yupeng Guo Ruipeng Wang Biao | 2013 | Chinese Journal of Aeronautics2013，26，6： | 8 |
| 8 | Recent progress of integrated circuits and optoelectronic chips显示文摘Integrated circuits(ICs)and optoelectronic chips are the foundation stones of the modern information society.The IC industry has been driven by the so-called'Moore's law'in the past 60 years,and now has entered the post Moore's law era.In this paper,we review the recent progress of ICs and optoelectronic chips.The research status,technical challenges and development trend of devices,chips and integrated technologies of typical IC and optoelectronic chips are focused on.The main contents include the development law of IC and optoelectronic chip technology,the IC design and processing technology,emerging memory and chip architecture,brain-like chip structure and its mechanism,heterogeneous integration,quantum chip technology,silicon photonics chip technology,integrated microwave photonic chip,and optoelectronic hybrid integrated chip. | Yue HAO Shuiying XIANG Genquan HAN Jincheng ZHANG Xiaohua MA Zhangming ZHU Xingxing GUO Yahui ZHANG Yanan HAN Ziwei SONG Yan LIU Ling YANG Hong ZHOU Jiangyi SHI Wei ZHANG Min XU Weisheng ZHAO Biao PAN Yangqi HUANG Qi LIU Yimao CAI Jian ZHU Xin OU Tiangui YOU Huaqiang WU Bin GAO Zhiyong ZHANG Guoping GUO Yonghua CHEN Yong LIU Xiangfei CHEN Chunlai XUE Xingjun WANG Lixia ZHAO Xihua ZOU Lianshan YAN Ming LI | 2021 | Science China(Information Sciences)2021，64，10： | 7 |
| 9 | Research Status and Progress on Modification of Dietary Fiber at Home and Abroad显示文摘Studies have shown that modified dietary fiber has better physical and chemical properties and functions,and can better play its physiological effects.This paper systematically and comprehensively expounded the application progress of chemical separation method,microbial fermentation method,physical method,enzyme method and steam explosion method in dietary fiber modification,and expounded the development prospect of modified dietary fiber,so as to provide reference for further study on development and application of dietary fiber. | Xiaoran DUAN Suyan GAO Shoumin JIA Litian ZHANG Ruihuan DU Aili XIANG Biao QI Lei WANG | 2019 | Agricultural Biotechnology2019，8，4： | 5 |
| 10 | Treatment quality and outcome for multidrug-resistant tuberculosis patients in four regions of China: a cohort study显示文摘Background:China incurs an extremely low treatment coverage of multidrug-resistant tuberculosis(MDR-TB).This study aimed to understand the experience of MDR-TB patients on quality of health care,and the clinical impact through an up to six-year follow-up.Methods:Cohorts of MDR-TB patients were built in TB/MDR-TB designated hospitals in four regions of China from 2014 to 2015.Patients were followed up during treatment course,and yearly confirmation afterward until 2019.Delay in MDR-TB diagnosis and treatment was calculated upon bacteriological confirmation and treatment initiation.Risk factors for unfavourable outcomes were identified by multivariate logistic regression.Results:Among 1168 bacteriological-positive TB patients identified from a 12-million population,58(5.0%)MDR-TB cases were detected.The median delay for MDR-TB diagnosis was 90.0 days,with 13.8%having a delay above 180.0 days.MDR-TB treatment was only recommended to 19(32.8%)participants,while the rest continued with regimen for drug-susceptible TB.In MDR-TB treatment group,36.8%achieved treatment success,while the others had incomplete treatment(21.1%),loss to follow-up(36.8%)and TB relapse(5.3%).For non-MDR-TB treatment group,33.3%succeeded,25.6%relapsed,2.6%failed,23.1%died,and 15.4%were lost to follow-up.Overall,only 35.7%(20/56)of detected MDR-TB patients had favourable outcomes and higher education level was positively associated with it(adjusted odds ratio[aOR]:3.60,95%confidence interval[CI]:1.04-12.5).Conclusions:A large proportion of patients did not receive MDR-TB treatment and had unfavourable outcomes.Delayed MDR-TB diagnosis resulted in poor quality of MDR-TB care.Rapid diagnosis,regulated patient management and high-quality MDR-TB treatment should be enhanced in China. | Xu-Bin Zheng Vinod K.Diwan Qi Zhao Yi Hu Judith Bruchfeld Wei-Li Jiang Sven Hoffner Biao Xu | 2020 | Infectious Diseases of Poverty2020，9，4： | 5 |
| 11 | Study on Information Diffusion Analysis in Social Networks and Its Applications显示文摘Due to the prevalence of social network services, more and more attentions are paid to explore how information diffuses and users affect each other in these networks, which has a wide range of applications, such as viral marketing, reposting prediction and social recommendation. Therefore, in this paper, we review the recent advances on information diffusion analysis in social networks and its applications. Specifically, we first shed light on several popular models to describe the information diffusion process in social networks,which enables three practical applications, i.e., influence evaluation, influence maximization and information source detection. Then, we discuss how to evaluate the authority and influence based on network structures. After that, current solutions to influence maximization and information source detection are discussed in detail, respectively. Finally, some possible research directions of information diffusion analysis are listed for further study. | Biao Chang Tong Xu Qi Liu En-Hong Chen | 2018 | International Journal of Automation and computing2018，15，4： | 5 |
| 12 | A frequency and amplitude dependent model of rail pads for the dynamic analysis of train-track interaction显示文摘A frequency and amplitude dependent model is used to describe the complex behavior of rail pads.It is implemented into the dynamic analysis of three dimensional coupled vehicle-slab track(3D-CVST)systems.The vehicle is treated as a 35-degreeof-freedom multi-body system,and the slab track is represented by two continuous Bernoulli-Euler beams supported by a series of elastic rectangle plates on a viscoelastic foundation.The rail pad model takes into account the influences of the excitation frequency and of the displacement amplitude through a fractional derivative element,and a nonlinear friction element,respectively.The Grünwald representation of the fractional derivatives is employed to numerically solve the fractional and nonlinear equations of motion of the 3D-CVST system by means of an explicit integration algorithm.A dynamic analysis of the3D-CVST system exposed to excitations of rail harmonic irregularities is primarily carried out,which reveals the dependence of stiffness and damping on excitation frequency and displacement amplitude.Subsequently,sensitive analyses of the model parameters are investigated by conducting the dynamic analysis of the 3D-CVST system subjected to excitations of welded rail joint irregularities.Following this,parameters of the rail pad model are optimized with respect to experimental values.For elucidation,the 3D-CVST dynamic model incorporated with the rail pads model is used to calculate the wheel/rail forces induced by excitations of measured random track irregularities.Further,the numerical results are compared with experimental data,demonstrating the reliability of the proposed model. | ZHU Sheng Yang CAI Cheng Biao LUO Zhen LIAO Zhong Qi | 2015 | Science China(Technological Sciences)2015，58，2： | 4 |
| 13 | An improved surface-plasmonic nanobeam cavity for higher Q and smaller V显示文摘We demonstrate a high-Q hybrid surface-plasmon-polariton-photonic crystal(SP3C) nanobeam cavity.The proposed cavities are analyzed numerically using the three-dimensional finite difference time domain(3D-FDTD) method.The results show that a Q-factor of 2076 and a modal volume V of 0.16(/2n) 3 can be achieved in a 50 nm silica-gap hybrid SP3C nanobeam cavity when it operates at telecommunications wavelengths and at room temperature.V can be further reduced to 0.02(/2n) 3 when the silica thickness decreases to 10 nm,which leads to a Q/V ratio that is 11 times that of the corresponding plasmonic-photonic nanobeam cavity(without silica).The ultrahigh Q/V ratio originates from the low-loss nature and deep sub-wavelength confinement of the hybrid plasmonic waveguide,as well as the mode gap effect used to reduce the radiation loss.The proposed structure is fully compatible with semiconductor fabrication techniques and could lead to a wide range of applications. | YU Ping QI Biao XU Chao HU Ting JIANG XiaoQing WANG MingHua YANG JianYi | 2012 | Chinese Science Bulletin2012，57，25： | 4 |
| 14 | Altered spontaneous brain activity patterns in patients with diabetic retinopathy using amplitude of low-frequency fluctuation显示文摘BACKGROUND Diabetes mellitus is a metabolic disorder characterized by prolonged elevation of blood glucose due to various causes.Currently,the relationship between diabetic retinopathy(DR)and altered connectivity of brain function is unclear.AIM To investigate the relationship between this brain activity and clinical manifestations and behaviors of DR patients by using the amplitude of low-frequency fluctuation(ALFF)technique.METHODS Twenty-four DR patients and 24 healthy controls(HCs)matched for age and gender were enrolled.We measured and recorded average ALFF values of DR patients and HCs and then classified them using receiver operating characteristic(ROC)curves.RESULTS ALFF values of both left and right posterior cerebellar lobe and right anterior cingulate gyrus were remarkably higher in the DR patients than in the HCs;however,DR patients had lower values in the bilateral calcarine area.ROC curve analysis of different brain regions demonstrated high accuracy in the area under the curve analysis.There was no significant relationship between mean ALFF values for different regions and clinical presentations in DR patients.Neuronal synchronization abnormalities in some brain regions of DR patients were associated with cognitive and visual disorders.CONCLUSION Abnormal spontaneous brain activity was observed in many areas of DR patients’brains,which may suggest a possible link between clinical manifestations and behaviors in DR patients. | Wen-Qing Shi Mou-Xin Zhang Li-Ying Tang Lei Ye Yu-Qing Zhang Qi Lin Biao Li Yi Shao Yao Yu | 2022 | World Journal of Diabetes2022，13，2： | 4 |
| 15 | Total Arterial Off-Pump Coronary Artery Bypass Grafting: A 1O-Year Experience显示文摘 | Biao Yuan Hong-Wei Qi Jian-Gang Zhao Xi-Zheng Wang Nan Chen Feng-Hua Zhao Li-Fang Wang Huan-Ying Dong | 2018 | Chinese Medical Journal2018，，18： | 3 |
| 16 | Rising challenge of multidrug-resistant tuberculosis in China:a predictive study using Markov modeling显示文摘Background:Multidrug-resistant tuberculosis(MDR-TB)is on the rise in China.This study used a dynamic Markov model to predict the longitudinal trends of MDR-TB in China by 2050 and to assess the effects of alternative control measures.Methods:Eight states of tuberculosis transmission were set up in the Markov model using a hypothetical cohort of 100000 people.The prevalence of MDR-TB and bacteriologically confirmed drug-susceptible tuberculosis(DS-TB+)were simulated and MDR-TB was stratified into whether the disease was treated with the recommended regimen or not.Results:Without any intervention changes to current conditions,the prevalence of DS-TB+was projected to decline 67.7%by 2050,decreasing to 20 per 100000 people,whereas that of MDR-TB was expected to triple to 58/100000.Furthermore,86.2%of the MDR-TB cases would be left untreated by the year of 2050.In the case where MDR-TB detection rate reaches 50%or 70%at 5%per year,the decline in prevalence of MDR-TB would be 25.9 and 36.2%respectively.In the case where treatment coverage was improved to 70%or 100%at 5%per year,MDR-TB prevalence in 2050 would decrease by 13.8 and 24.1%,respectively.If both detection rate and treatment coverage reach 70%,the prevalence of MDR-TB by 2050 would be reduced to 28/100000 by a 51.7%reduction.Conclusions:MDR-TB,especially untreated MDR-TB,would rise rapidly under China’s current MDR-TB control strategies.Interventions designed to promote effective detection and treatment of MDR-TB are imperative in the fights against MDR-TB epidemics. | Bing-Ying Li Wen-Pei Shi Chang-Ming Zhou Qi Zhao Vinod K Diwan Xu-Bin Zheng Yang Li Sven Hoffner Biao Xu | 2020 | Infectious Diseases of Poverty2020，9，3： | 3 |
| 17 | Predominant yeasts in Chinese Dong fermented pork(Nanx Wudl)and their aroma-producing properties in fermented sausage condition显示文摘Yeasts are one of the predominant microbial groups in fermented meats.In this study,yeast communities of Chinese Dong fermented pork(Nanx Wudl)were investigated and the technological properties of 73 yeast isolates were evaluated.Through culture-dependent and high-throughput sequencing methods,the main yeast species identified included Pichia membranifaciens,Kazachstania bulderi,Millerozyma farinosa,Candida zeylanoides,Kazachstania exigua,Candida parapsilosis and Saccharomyces cerevisiae.Among these yeasts,P.membranifaciens,M.farinosa,K.exigua and K.bulderi were detected in fermented meats for the first time.A total of 73 yeast isolates was investigated for their lipolytic and proteolytic activities.All yeast species showed lipolytic activity,while proteolytic activity against meat protein was only detected in S.cerevisiae.Assay of aroma-producing potential was performed in a model simulating fermented sausage condition.Inoculation of yeast strains increased volatiles production,especially esters and alcohols.The highest ester production was observed in S.cerevisiae Y70 strain,followed by K.exigua Y12 and K.bulderi Y19.C.zeylanoides Y10 and S.cerevisiae Y70 were the highest producers of benzeneethanol and 3-methyl-1-butanol.S.cerevisiae Y70 with its highest production of branched alcohols and esters could be a promising candidate as aroma enhancer in the manufacture of fermented sausages. | Ruifang Mi Xi Chen Suyue Xiong Biao Qi Jiapeng Li Xiaoling Qiao Wenhua Chen Chao Qu Shouwei Wang | 2021 | Food Science and Human Wellness2021，10，2： | 3 |
| 18 | Transcription of the putative tumor suppressor gene HCCS1 requires binding of ETS-2 to its consensus near the transcription start site显示文摘hepatocellular 癌压制或 1 (HCCS1 ) 基因被在肝癌症的从杂合现象(17p13.3 ) 的损失的一个占优势的区域的两位置的克隆并且由为在大规模 transfection 试金影响房间增长的基因的功能的屏蔽识别。它的过去在在房间文化的房间增长和在裸体鼠标的肿瘤生长的抑制的表达式结果。理解它的抄写规定,倡导者建筑学详细被把了。抄写的主要开始被对 C 残余的教材扩展印射, ATG 在上游的 177 核苷酸上哄骗。由在短暂 transfection 试金估计最小的倡导者(到 +148 区域的 -60 )的一套扫描连接器的异种的倡导者活动,我们发现 +1 到 40 区域是的+对 HCCS1 基因抄写批评,为抄写因素 NF-kappaB (到 +7 的 -21 和到 +26 的 +40 )的包含的有约束力的地点, p53 (到 +9 的 +29 )和 et (到 +20 的 +4 和到 +39 的 +23 )。生物化学、分子的分析表明 ETS 抄写因素 ETS-2 和 Elf-1 在 situ 绑在二个 et 地点并且显著地作出贡献到抄写结盟 HCCS1 基因的活跃状态,当时 NF-kappaB , p53 和 ETS 家庭( ETS-1 和 NERF2 )的二个另外的成员看起来起很少作用。我们的观察提供卓见进 HCCS1 抄写规定的机械学的方面。房间研究(2006 ) 16:780-796。做 i:10.1038/sj .cr.7310092;出版联机 2006 年 9 月 5 日。 | Jing De Zhu Qi Fei Peng Wang Fei Lan Da Qin Mao Hong Yu Zhang Xue Biao Yao | 2006 | Cell Research2006，16，9： | 3 |
| 19 | Synthesis and characterization of water-soluble magnetite nanocrystals via one-step sol-gel pathway显示文摘Water-soluble magnetite nanocrystals have been prepared by one-step non-alkoxide sol-gel method.The magnetic properties of magnetite nanocrystals obtained are size dependent.The experimental results also reveal that 2-pyrrolidone not only serves as solvent,but also involves surface coordination which renders the magnetite nanoparticles water-soluble and colloidal solution stable.Although the current synthetic approach is a small modification to the non-alkoxide sol-gel method,it allows us to directly obtain high-quality water-soluble magnetic nanocrystals.In addition,we realize that this method could be easily extended to preparation of many other transition and main group metal oxide water-soluble nanocrystals only from simple metal ion salts. | QI HongZhang YAN Biao LI ChengKui LU Wei | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，7： | 3 |
| 20 | Significant loss of soil inorganic carbon at the continental scale显示文摘Widespread soil acidification due to atmospheric acid deposition and agricultural fertilization may greatly accelerate soil carbonate dissolution and CO_(2) release.However,to date,few studies have addressed these processes.Here,we use meta-analysis and nationwide-survey datasets to investigate changes in soil inorganic carbon(SIC)stocks in China.We observe an overall decrease in SIC stocks in topsoil(0-30 cm)(11.33 g C m^(-2)yr^(-1))from the 1980s to the 2010s.Total SIC stocks have decreased by∼8.99±2.24%(1.37±0.37 Pg C).The average SIC losses across China(0.046 Pg C yr^(-1))and in cropland(0.016 Pg C yr^(-1))account for∼17.6%-24.0%of the terrestrial C sink and 57.1%of the soil organic carbon sink in cropland,respectively.Nitrogen deposition and climate change have profound influences on SIC cycling.We estimate that∼19.12%-19.47%of SIC stocks will be further lost by 2100.The consumption of SIC may offset a large portion of global efforts aimed at ecosystem carbon sequestration,which emphasizes the importance of achieving a better understanding of the indirect coupling mechanisms of nitrogen and carbon cycling and of effective countermeasures to minimize SIC loss. | Xiao-Dong Song Fei Yang Hua-Yong Wu Jing Zhang De-Cheng Li Feng Liu Yu-Guo Zhao Jin-Ling Yang Bing Ju Chong-Fa Cai Biao Huang Huai-Yu Long Ying Lu Yue-Yu Sui Qiu-Bing Wang Ke-Ning Wu Feng-Rong Zhang Ming-Kui Zhang Zhou Shi Wan-Zhu Ma Gang Xin Zhi-Ping Qi Qing-Rui Chang En Ci Da-Gang Yuan Yang-Zhu Zhang Jun-Ping Bai Jia-Ying Chen Jie Chen Yin-Jun Chen Yun-Zhong Dong Chun-Lan Han Ling Li Li-Ming Liu Jian-Jun Pan Fu-Peng Song Fu-Jun Sun Deng-Feng Wang Tian-Wei Wang Xiang-Hua Wei Hong-Qi Wu Xia Zhao Qing Zhou Gan-Lin Zhang | 2022 | National Science Review2022，9，2： | 2 |
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