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| 1 | A scientometric review of biochar research in the past 20 years(1998-2018)显示文摘Biochar is the carbon-rich product obtained from the thermochemical conversion of biomass under oxygen-limited conditions.Biochar has attained extensive attention due to its agronomical and environmental benefits in agro-ecosystems.This work adopts the scientometric analysis method to assess the development trends of biochar research based on the literature data retrieved from the Web of Science over the period of 1998-2018.By analysing the basic characteristics of 6934 publications,we found that the number of publications grew rapidly since 2010.Based on a keyword analysis,it is concluded that scholars have had a fundamental recognition of biochar and preliminarily found that biochar application had agronomic and environmental benefits during the period of 1998-2010.The clustering results of keywords in documents published during 2011-2015 showed that the main research hotspots were“biochar production”,“biochar and global climate change”,“soil quality and plant growth”,“organic pollutants removal”,and“heavy metals immobilization”.While in 2016-2018,beside these five main research hotspots,“biochar and composting”topic had also received greater attention,indicating that biochar utilization in organic solid waste composting is the current research hotspot.Moreover,updated reactors(e.g.,microwave reactor,fixed-bed reactor,screw-feeding reactor,bubbling fluidized bed reactor,etc.)or technologies(e.g.,solar pyrolysis,Thermo-Catalytic Reforming process,liquefaction technology,etc.)applied for efficient energy production and modified biochar for environmental remediation have been extensively studied recently.The findings may help the new researchers to seize the research frontier in the biochar field. | Ping Wu Syed Tahir Ata-Ul-Karim Bhupinder Pal Singh Hailong Wang Tongliang Wu Cun Liu Guodong Fang Dongmei Zhou Yujun Wang Wenfu Chen | 2019 | Biochar2019，1，1： | 36 |
| 2 | Stereotactic body radiation therapy for management of spinal metastases in patients without spinal cord compression: a phase 1–2 trial显示文摘 | Xin Shelley Wang Laurence D Rhines Almon S Shiu James N Yang Ugur Selek Ibrahima Gning Ping Liu Pamela K Allen Syed S Azeem Paul D Brown Hadley J Sharp David C Weksberg Charles S Cleeland Eric L Chang | 2012 | Lancet Oncology2012，，4： | 2 |
| 3 | The Drosophila microR- NA14 suppresses cell death and is required for normal fat me- tabolism 显示文摘 | XU Ping Vernooy SY Guo M | 2003 | Curr giol2003，13，9： | 1 |
| 4 | PEG-PDLLA micelles treatment improves axonal function of the corpus callosum following traumatic brain injury显示文摘 | Ping X Jiang K Lee SY | 2014 | J Neurotrauma2014，31，13： | 1 |
| 5 | NGAL can alternately mediate sunitinib resistance in renal cell carcinoma显示文摘 | YU DS WU CL PING SY | 2014 | J Urol2014，192，2： | 1 |
| 6 | Pollution and biodegradation of hexabromocyclododecanes:A review显示文摘Hexabromocyclododecanes(HBCDs)are the most common brominated flame-retardants after polybrominated diphenyl ethers.HBCDs can induce cancer by causing inappropriate antidiuretic hormone syndrome.Environmental contamination with HBCDs has been detected globally,with concentrations ranging from ng to|ig.Methods to degrade HBCDs include physicochemical methods,bioremediation,and phytoremediation.The photodegradation of HBCDs using simulated sunlight or ultraviolet lamps,or chemical catalysts are inefficient and expensive,as is physicochemical degradation.Consequently,bioremediation is considered as the most cost-effective and clean approach.To date,five bacterial strains capable of degrading HBCDs have been isolated and identified:Pseudomonas sp.HB01,Bacillus sp.HBCD-sjtu,Achromobacter sp.HBCD-1,Achromobacter sp.HBCD-2,and Pseudomonas aeruginosa HS9.The molecular mechanisms of biodegradation of HBCDs are discussed in this review.New microbial resources should be explored to increase the resource library in order to identify more HBCD-degrading microbes and functional genes.Synthetic biology methods may be exploited to accelerate the biodegradation capability of existing bacteria,including modification of the degrading strains or functional enzymes,and artificial construction of the degradation microflora.The most potentially useful method is combining microdegradation with physicochemical methods and phytoremediation.For example,exogenous microorganisms might be used to stimulate the adsorption capability of plants for HBCDs,or to utilize an interaction between exogenous microorganisms and rhizosphere microorganisms to form a new rhizosphere microbial community to enhance the biodegradation and absorption of HBCDs. | Ling Huang Syed Bilal Shah Haiyang Hu Ping Xu Hongzhi Tang | 2020 | Frontiers of Environmental Science & Engineering2020，14，1： | 0 |
| 7 | High critical current density in powder-in-tube processed MgB_2/Ta/Cu wire显示文摘The magnetization of dense MgB2/Ta/Cu wires prepared by the powder-in-tube method is measured by a SQUID magnetometer. The results indicate that the critical temperature of MgB2/Ta/Cu is around 38.4 K with a sharp transition width of 0.6 K. The MgB2/Ta/Cu wire shows a strong flux pinning and the critical current density is higher than 105 A/cm2 (5 K, self-field) and 104 A/cm2 (20 K, 1 T). Also, the irreversibility field of the sample reaches 6.6 T at 5 K. | FENG Yong, ZHAO Yong, A. K. Dradhan, ZHOU Lian, LIU Xianghong, Jl Ping, ZHANG Pingxiang & SUN Yuping Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China School of Science and Engineering, University of New South Wales, Sy | 2002 | Chinese Science Bulletin2002，47，3： | 0 |
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