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A critical review of biochar-based nitrogen fertilizers and their effects on crop production and the environment

Biochar 2022年第1期4卷 577-595页

作者： Yurong Gao Zheng Fang Lukas Van Zwieten Nanthi Bolan Da Dong Bert F.Quin Jun Meng Fangbai Li Fengchang Wu Hailong Wang Wenfu Chen Agronomy College Shenyang Agricultural UniversityShenyang 110866China Biochar Engineering technology Research Center of Guangdong Province School of Environmental and Chemical EngineeringFoshan UniversityFoshan 528000China Key Laboratory of Biochar and Soil Improvement Ministry of Agriculture and Rural AffairsBeijingChina Department of Primary Industries New South Wales1243 Bruxner Highway2477 WollongbarNSWAustralia School of Agriculture and Environment The University of Western AustraliaPerthWA 6001Australia The UWA Institute of Agriculture The University of Western Australia6001 PerthWAAustralia School of Environmental and Resource sciences Zhejiang A&F UniversityHangzhouZhejiang 311300China Quin Environmentals(NZ)Ltd PO Box 125122St.HeliersAuckland 1740New Zealand Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management Institute of Eco-environmental and Soil SciencesGuangdong Academy of Sciences510650 GuangzhouChina State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Guangdong Green Technologies Co. LtdFoshan 528100China

Globally,nitrogen(N)fertilizer demand is expected to reach 112 million tonnes to support food production for about 8 billion ***,more than half of the N fertilizer is lost to the environment with impacts on air,water and soil quality,and ***,N loss to the environment contributes to greenhouse gas emissions and climate ***,where N fertilizer application is limited,severe depletion of soil fertility has become a major constraint to sustainable *** address the issues of low fertilizer N use efficiency(NUE),biochar-based N fertilizers(BBNFs)have been developed to reduce off-site loss and maximize crop N *** products are generally made through physical mixing of biochar and N fertilizer or via coating chemical N fertilizers such as prilled urea with *** review aims to describe the manufacturing processes of BBNFs,and to critically assess the effects of the products on soil properties,crop yield and N loss pathways.

关键词： Nitrogen use efficiency Controlled-release Retention Coating Biochar removing contaminants from

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Preparation of Eu^(2+),Dy^(3+),Zr^(4+)ions co-doped strontium aluminate/molybdate multi-optical functional hybrid pigments for anti-counterfeiting

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Journal of Rare Earths 2023年第5期41卷 639-648,I0001页

作者： Haitao Lv Yanmin Wang Zhidong Pan Xiangyu Li Yehong Zhang School of Materials science and Engineering South China University of TechnologyGuangzhou 510640China School of Materials science and Engineering Guizhou Minzu UniversityGuiyang 550025China

Eu^(2+),Dy^(3+)and Zr_(4+)ions co-doped strontium aluminate(i.e.,SrAl_(2)O_(4):Eu^(2+),Dy^(3+),Zr_(4+))/molybdate(i.e.,Ho2MoO6or Nd2MoO6)with photo-/mechano-luminescence and allochroic effect as multi-optical functional hybrid pigments were prepared via solid state reactions and subsequent *** phosphor and hybrid pigments were characterized by X-ray diffraction,scanning electron microscopy with energy dispersive X-ray spectroscopy,ultraviolet-visible spectroscopy,L*a*b*color scale analysis,spectrophotometry and mechanoluminescent *** results show that the optimum luminescent emission intensity of SrAl_(2)O_(4):Eu^(2+),Dy^(3+),Zr_(4+)phosphor can be obtained when 5 mol%Zr_(4+)ions is doped into the *** the excitation of 365 nm wavelength,the hybrid pigments prepared with the phosphor and molybdate at a mass ratio of 1:1 present a green broad band emission located at 460-650 nm due to 4f65d1→4f7transitions of Eu^(2+)*** hybrid pigments have the superior mechanoluminescent property and emit light after being exerted by mechanical ***,the hybrid pigments also exhibit an allochroic effect under different *** addition,the anti-counterfeiting of the hybrid pigments as a promising application was also presented.

关键词： Eu^(2+),Dy^(3+),Zr^(4+)-co-doped strontium aluminate Molybdate Hybrid pigment Mechanoluminescence Allochroiceffect Rareearths

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Joint multiple resource allocation for offloading cost minimization in IRS-assisted MEC networks with NOMA

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Digital Communications and Networks 2023年第3期9卷 613-627页

作者： Guang Chen Yueyun Chen Zhiyuan Mai Conghui Hao Meijie Yang Shuangshuang Han Liping Du School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China Shunde Innovition School of Unversity of science and technology Beijing

Effective resource allocation can exploit the advantage of intelligent reflective surface(IRS)assisted mobile edge computing(MEC)***,it is challenging to balance the limited energy of MTs and the strict delay requirement of their *** this paper,in order to tackle the challenge,we jointly optimize the offloading delay and energy consumption of mobile terminals(MTs)to realize the delay-energy tradeoff in an IRS-assisted MEC network,in which non-orthogonal multiple access(NOMA)and multiantenna are applied to improve spectral *** achieve the optimal delay-energy tradeoff,an offloading cost minimization model is proposed,in which the edge computing resource allocation,signal detecting vector,uplink transmission power,and IRS phase shift coefficient are needed to be jointly *** optimization of the model is a multi-level fractional problem in complex fields with some coupled high dimension *** solve the intractable problem,we decouple the original problem into a computing subproblem and a wireless transmission subproblem based on the uncoupled relationship between different variable *** computing subproblem is proved convex and the closed-form solution is obtained for the edge computing resource ***,the wireless transmission subproblem is solved iteratively through decoupling the residual *** each iteration,the closed-form solution of residual variables is obtained through different successive convex approximation(SCA)*** verify the proposed algorithm can converge to an optimum with polynomial *** results indicate the proposed method achieves average saved costs of 65.64%,11.24%,and 9.49%over three benchmark methods respectively.

关键词： Mobile edge computing Intelligent reflective surface Task offloading Multiple resource allocation Non-orthogonal multiple access

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Synthesis of FeOOH scaly hollow tubes based on Cu_(2)O wire templates toward high-efficiency oxygen evolution reaction

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Rare Metals 2023年第6期42卷 1836-1846页

作者： Yu Zhang Xue-Ai Teng Ze-Qun Ma Rong-Ming Wang Woon-Ming Lau Ai-Xian Shan Beijing Advanced innovation Center for Materials Genome Engineering and Center for Green innovation School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing100083China Beijing Advanced innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing100083China Shunde innovation School of University of science and technology Beijing Foshan528000China Institute of Materials science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou215009China

For catalytic materials,the characteristics of one-dimension and hollowness are the promotion factors for their full presentation of catalytic activity,and through a template-as sis ted method,both above superiorities can be fused ***,we proposed a novel strategy inspired by Pearson's principle with Cu_(2)O wires as templates,and prepared FeOOH hollow tubes,which covered by FeOOH *** applied as oxygen evolution reaction(OER)catalyst,the FeOOH scaly hollow tubes(FeOOH SHTs)showed outstanding catalytic activity with a low overpotential of 245 mV to drive a current density of10 mA·cm^(-2),excellent kinetics manifesting as a low Tafel slope of 46.9 mV·dec^(-1),and robust *** work provides a new synthesis strategy for an ideal OER catalyst,FeOOH,with high inherent activity and enhances the feasibility to broaden the design ideas of transition metalbased catalysts.

关键词： FeOOH scaly hollow tube(SHT) Cu_(2)O wire template One-dimensional(1D)hollow structure Oxygen evolution reaction(OER)

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A Brief Discussion on the High-impact Cold-season Tornado Outbreak During 10-11 December 2021 in the United States

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Journal of Tropical Meteorology 2022年第2期28卷 252-260页

作者： LI Cai-ling BAI Lan-qiang YU Xiao-ding TAN Hao-bo HUANG Xian-xiang YAN Li-jun LI Zhao-ming ZHANG Ze-yu foshan Tornado Research Center Foshan Meteorological ServiceFoshanGuangdong 528000 China Southern Marine science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiGuangdong 519082 China China Meteorological Administration Training Center Beijing 100081 China Guangdong Meteorological Service Guangzhou 510062 China

An outbreak of powerful tornadoes tore through multiple states in the central and southern United States from 10 to 11 December *** is claimed the deadliest tornado outbreak that has taken place on December *** National Oceanic and Atmospheric Administration had confirmed 66 tornadoes as of 21 December,producing at least 90 *** tornadoes occurred at night and thus they were difficult to be visually located,which directly increases the risk for local *** violent nighttime tornadoes were rated category 4 on the enhanced Fujita scale(EF4).Although a high death toll was caused during this event,the operational service actually presented an excellent *** tornado outbreak has aroused extensive discussion from both the public and the research community in *** paper presents a brief discussion on the formation environment and warning services of the tornado *** the deadliest violent tornado in the past 45 years in China,the radar-based tornadic vortex signatures at the locations with EF4 damages show a comparable strength with those in the current *** views on the tornado warning issuance and receiving and damage surveys in China are also presented.

关键词： tornado tornado outbreak severe weather cold season warning service

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Suggestion on further strengthening ultra-low emission standards for PM emission from coal-fired power plants in China

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Journal of Environmental sciences 2023年第1期123卷 203-211页

作者： Jianguo Deng Shumin Wang Jiawei Zhang Yi Zhang Jingkun Jiang Yongzheng Gu Tao Han Lei Feng Jian Gao Lei Duan School of Environment Tsinghua UniversityBeijing 100084China China Energy Investment Co. Ltd.Beijing 100011China Guodian Power Development Co. Ltd.Beijing 100101China CHN ENERGY New Energy technology Research Institute Co. Ltd.Beijing 102209China Chinese Research Academy of Environmental sciences Beijing 100012China

China has established the largest clean coal-fired power generation system in the world by accomplishing the technological transformation of coal-fired power plants(CFPPs)to achieve ultra-low *** potential for further particulate matter(PM)emission reduction to achieve near-zero emission for CFPPs has become a hotspot *** this study,PM emission from some ultra-low emission CFPPs adopting advanced air pollutant control technologies in China was *** results revealed that the average filterable particulate matter(FPM)concentration,measured as the total particulate matter(TPM)according to the current national monitoring standard,was(1.67±0.86)mg/m^(3),which could fully achieve the ultra-low emission standard for key regions(5 mg/m^(3)),but that achieving the near-zero emission standard was difficult(1 mg/m^(3)).However,the condensable particulate matter(CPM),with an average concentration of(1.06±1.28)mg/m^(3),was generally ignored during monitoring,which led to about 38.7%underestimation of the *** considering both FPM and CPM,the TPM emission from current CFPPs would contribute to less than 5%of atmospheric PM_(2.5) concentrations in the key cities and regions in ***,further reduction in FPM emission proposed by the near-zero emission plan of CFPPs may have less environmental benefit than emission control of other anthropogenic ***,it is suggested that the management of CPM emission should be strengthened,and a national standard for CPM emission monitoring based on the indirect dilution method should be established for *** measurements are helpful for optimal operation of air pollutant control devices and continuously promoting further emission reduction.

关键词： Near-zero emission Condensable particulate matter(CPM) Indirect dilution Emission standard Technical specification for emission monitoring

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Cu2O-templated fabrication of Ni(OH)2·0.75H2O hollow tubes for electrocatalytic oxygen evolution reaction

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Progress in Natural science:Materials International 2022年第5期32卷 554-560页

作者： Yu Zhang Xueai Teng Zequn Ma Rongming Wang Woon-Ming Lau Aixian Shan Beijing Advanced innovation Center for Materials Genome Engineering & Center for Green innovation School of Mathematics and Physics University of Science and Technology Beijing Beijing Advanced innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics University of Science and Technology Beijing Institute of Materials science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Shunde innovation School of University of science and technology Beijing

Cu2O is an ideal template material for the preparation of transition metal hydroxide/oxyhydroxides with oxygen evolution reaction(OER) enhanced catalytic performance. Here, inspired by Pearson’s principle, Cu2O wires were prepared and used as a sacrificial template to prepare Ni(OH)2·0.75H2O hollow tubes(Ni(OH)2HTs) with highly improved surface roughness. Benefiting from unique structural advantages, the Ni(OH)2HTs showed excellent catalytic activity, rapid kinetics and a long-term stability as the OER catalyst, where an overpotential of only 207mV was required to drive a current density of 10 mA cm-2, an ideal kinetics with a Tafel slope as 79.8 mV dec-1was calculated, and no obvious attenuation in chronoamperometry was discovered after operation for 24 h. This paper provides a novel template-assisted strategy to prepare high-performance transition metal-based OER catalysts possessing hollow and tubular structures.

关键词： Ni(OH) 2 hollow tube Cu 2 O wire Template One-dimensional hollow structure Oxygen evolution reaction

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Microstructure and formation mechanism of Ce-based chemical conversion coating on 6063 Al alloy

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中国有色金属学会会刊：英文版 2009年第3期19卷 592-600页

作者：陈东初李文芳龚伟慧吴桂香吴建峰 School of Materials science and Engineering South China University of Technology School of science Foshan University

In order to accelerate the conversion coating formation on 6063 Al alloy in the Ce(NO3)3 solution, accelerants of chloride and ammonium salt were used. The coating morphology, composition and structure were analyzed with SEM/EDS, EPMA, XPS and XRD. The coating morphology is influenced by the composition, pH value and temperature of the treating solution. The coating composed of metal oxide, metal hydroxide and hydrate appears to be amorphous. The elements in the coating are Al, Ce, O, Mn and Mg, while the Ce element exists in the forms of Ce3+ and Ce4+. The accelerant of chloride can increase the compactness and Ce content of the coating, so the coating corrosion resistance is remarkably improved. A scheme for the electrochemical reaction in the coating formation was proposed, and the potential change in the coating formation was also studied. It is found that chloride can shorten the time period of the first and the second stages in coating formation.

关键词： 6063铝合金化学转化膜微观结构形成机理涂层形貌铈 6063合金金属氢氧化物

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Investigation of Vapor-liquid Ejector with Organic Working Fluids

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Journal of Thermal science 2019年第1期28卷 61-71页

作者： CHEN Jianyong HUANG Yisheng NIU Zhiting LUO Xianglong CHEN Ying YANG Zhi School of Material and Energy Guangdong University of Technology Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter

The vapor-liquid ejector is a simply flow device and driven by thermal energy. In this paper, a modified mathematical model of the vapor-liquid ejector is proposed, and the validation shows good agreements with the experimental data. A study is carried out with six organic working fluids, namely R1233 zd(E), R1336 mzz(Z), R236 ea, R245 ca, R245 fa and R365 mfc. The influences of the entrainment ratio, the area ratio, the superheating at the vapor nozzle inlet, the subcooling at the liquid nozzle inlet, and the pressures at these inlets on the pressure lifting are parametrically investigated. An increase in the subcooling leads to the great increasing of pressure lifting and the superheating has slight effect on the pressure lifting, whereas others have the opposite tendency. The studies of the pressures and temperatures at the typical locations inside the vapor-liquid ejector are further conducted by using R1336 mzz(Z). The results show that the above parameters have great influence on these pressures and temperatures inside except that the pressures are insignificantly impacted by the superheating, and the temperatures are negligibly affected by the area ratio. R1336 mzz(Z) is recommended as a good working fluid for the vapor-liquid ejector.

关键词： vapor-liquid ejector modelling organic fluids pressure lifting

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Tra2βEnhances Cell Proliferation by Inducing the Expression of Transcription Factor SP1 in Cervical Cancer

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Biomedical and Environmental sciences 2023年第2期36卷 146-159页

作者： LI Mo Juan XIONG Dan WANG Shuai HUANG Hao Department of The Sixth Affiliated Hospital School of MedicineSouth China University of Technology(Nanhai District People’s Hospital of Foshan)Foshan 528200GuangdongChina Shunde Hospital Southern Medical University(The First People’s Hospital of Shunde)Foshan 528308GuangdongChina

Objective In this study,the role and potential mechanism of transformer 2β(Tra2β)in cervical cancer were *** The transcriptional data of Tra2βin patients with cervical cancer from Gene Expression Profiling Interactive Analysis(GEPIA)and cBioPortal databases were *** functions of Tra2βwere evaluated by using Western blot,MTT,colony formation,Transwell assays,and nude mouse tumor formation *** genes regulated by Tra2βwere studied by ***,representative genes were selected for RT-qPCR,confocal immunofluorescence,Western blot,and rescue experiments to verify their regulatory *** The dysregulation of Tra2βin cervical cancer samples was ***2βoverexpression in Siha and Hela cells enhanced cell viability and proliferation,whereas Tra2βknockdown showed the opposite *** of Tra2βexpression did not affect cell migration and ***,tumor xenograft models verified that Tra2βpromoted cervical cancer ***,Tra2βpositively regulated the mRNA and protein level of SP1,which was critical for the proliferative capability of Tra2β.Conclusion This study demonstrated the important role of the Tra2β/SP1 axis in the progression of cervical cancer in vitro and in vivo,which provides a comprehensive understanding of the pathogenesis of cervical cancer.

关键词： Tra2β Cervical cancer Proliferation SP1 Molecular targeted therapy

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