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Integrating phosphorus management and cropping technology for sustainable maize production

Journal of Integrative Agriculture 2024年第4期23卷 1369-1380页

作者： Haiqing Gong Yue Xiang Jiechen Wu Laichao Luo Xiaohui Chen Xiaoqiang Jiao Chen Chen State key laboratory of Nutrient Use and Management College of Resources and Environmental SciencesCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China department of Sustainable development Environmental Science and Engineering(SEED)KTH Royal Institute of TechnologyStockholm SE-10044Sweden Anhui Province key lab of Farmland Ecological Conservation and Pollution Prevention School of Resources and EnvironmentAnhui Agricultural UniversityHefei 230036China Ministry of Education key laboratory for Biodiversity Science and Ecological Engineering National Observations and Research Station for Wetland Ecosystems of the Yangtze EstuaryInstitute of Biodiversity Science and Institute of Eco-ChongmingCollege of Life SciencesFudan UniversityShanghai 200438China

Achieving high maize yields and efficient phosphorus(P)use with limited environmental impacts is one of the greatest challenges in sustainable maize *** plant density is considered an effective approach for achieving high maize ***,the low mobility of P in soils and the scarcity of natural P resources have hindered the development of methods that can simultaneously optimize P use and mitigate the P-related environmental footprint at high plant *** this study,meta-analysis and substance flow analysis were conducted to evaluate the effects of different types of mineral P fertilizer on maize yield at varying plant densities and assess the flow of P from rock phosphate mining to P fertilizer use for maize production in China.A significantly higher yield was obtained at higher plant densities than at lower plant *** application of single superphosphate,triple super-phosphate,and calcium magnesium phosphate at high plant densities resulted in higher yields and a smaller environmental footprint than the application of diammonium phosphate and monoammonium *** scenario analyses suggest that combining the optimal P type and application rate with a high plant density could increase maize yield by 22%.Further,the P resource use efficiency throughout the P supply chain increased by 39%,whereas the P-related environmental footprint decreased by 33%.Thus,simultaneously optimizing the P type and application rate at high plant densities achieved multiple objectives during maize production,indicating that combining P management with cropping techniques is a practical approach to sustainable maize *** findings offer strategic,synergistic options for achieving sustainable agricultural development.

关键词： maize plant density mineral phosphorus fertilizer meta-analysis substance flow analysis

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Fabrication of Zn-Ti layered double hydroxide by varying cationic ratio of Ti^(4+) and its application as UV absorbent

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Chinese Chemical Letters 2017年第2期28卷 394-399页

作者： Xin-Rui Wang Yong Li Li-Ping Tang Wen Gan Wei Zhou Yu-Fei Zhao Dong-Sheng Bai beijing key lab of plant resource research and development/department of chemistry School of Science Beijing Technology and Business University key laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

ZnTi-layered double hydroxides（LDHs） with varying Zn/Ti ratio have been synthesized by coprecipitation of zinc and titanium salts from homogeneous *** obtained ZnTi-LDHs possess high crystallinity and hierarchical structure with improved UV-absorbance *** UV-vis spectra show that the UV absorbing properties of ZnTi-LDHs is stronger and broader than both MgAl-LDH and ZnAl-LDH due to the existence of ***,the UV absorption property increased with the content of Ti,which can be ascribed to the decrease in the band gap energy,as clearly confirmed by density functional theory *** irradiated by UV rays,the property of the samples with generated free radicals（OH^·and O2^·） was evaluated by means of electron spin resonance（EPR）.ZnTi-LDHs generated a relatively lower active radicals in contrast with TiO2 and ZnO,which implied an increased safety used as ***,this work provides a detailed understanding of UV shielding properties of ZnTiLDHs which was unrevealed previously,and demonstrates the expansive application prospects of ZnTiLDHs in the field of sunscreens.

关键词： Layered double hydroxide UV absorbent Density functional theory calculations Photoactivity Band gap

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The impact of solvent and modifier on ZnO thin-film transistors fabricated by sol-gel process

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Science China(Technological Sciences) 2014年第11期57卷 2153-2160页

作者： DONG YinMao TANG DongYan LI ChenSha School of Sciences/beijing key lab of plant resource research and development Beijing Technology and Business University School of Chemical Engineering and Technology Harbin Institute of Technology department of Mechanical Engineering Tsinghua University

Techniques for fabricating solution-processed zinc oxide(ZnO)-based thin-film transistors(TFTs)are feasible with solution using various ***,ZnO TFTs were fabricated via sol-gel method using zinc acetate as the starting reagent with different modifiers and *** ZnO thin-film semiconductors with well-controlled,preferential crystal orientation and densely packed ZnO crystals can be prepared with the optimized fabrication conditions,exhibiting excellent field-effect far exceeding those of hydrogenated amorphous silicon(a-Si:H).However,the field-effect characteristics of ZnO TFTs were different for different precursor systems which were constituted by zinc acetate,modifiers and *** co-modification of acetoin and monoethanolamine for the precursor system exhibited higher extent of crystal orientation and *** maximum mobility of 7.65 cm2V-1s-1 and current on-to-off ratio of^105–106 have been obtained.

关键词： thin-film transistor semiconductor zinc oxide sol-gel solution-process crystallization

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Dual-mode emission of single-layered graphene quantum dots in confined nanospace： Anti-counterfeiting and sensor applications

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Nano research 2018年第4期11卷 2034-2045页

作者： Liqian Bai Ning Xue Yufei Zhao Xinrui Wang Chao Lu Wenying Shi ing University of Chemical Technology 15 Beisanhuan East Road Beijing 100029 China key laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China beijing key lab of plant resource research and development Beijing Technology and Business University Beijing 100048 China

Engineering of the luminescent properties for graphene quantum dots （GQDs） presents two enormous challenges： 1） The bandgap of GQDs is mainly determined by structural defects （size, shape, and the fraction of sp2 and sp3 domains）, which results in non-stoichiometric nature; 2） the preparation methods limit the achievement of an accurate chemical structure of GQDs, leading to many controversial explanations over the relationship between the structural defects and bandgaps. Here, single-layered GQDs with an exact structure are obtained by in-situ reaction of intercalated precursors in the confined nanospace of layered double hydroxides （LDHs）. Subsequently, the structure-property relationship is uncovered, demonstrating the enhanced fluorescence and activated room temperature phosphorescence of the as-pre- pared GQDs-LDHs, which originate from synergistic effects： 1） strong confine- ment provided by the nanospace of LDHs; 2） rich O-containing functional groups on the surface of GQDs resulting from LDH catalysis. Moreover, the colorless nature and dual-emission characteristics of GQDs-LDHs satisfy the preconditions as anti-counterfeiting markers for protecting valuable documents （bank notes, commercial invoices, etc.）. Particularly, owing to the low toxicity of GQDs and the edible property of LDHs, the GQDs-LDHs/gelatin capsules could be the new generation of potential green anti-counterfeiting material in the field of food and drugs.

关键词： graphene quantum dots dual-mode emission confinement sensors anti-counterfeiting

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Recent Progress in Fluorescent Formaldehyde Detection Using Small Molecule Probes

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Journal of Analysis and Testing 2022年第2期6卷 204-215页

作者： Jiao-Jiao Zheng Wen-Cai Liu Feng-Niu Lu Ying Tang Zhi-Qin Yuan College of chemistry Beijing University of Chemical TechnologyBeijing 100029China department of chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081China beijing key laboratory of plant resources research and development Beijing Technology and Business UniversityBeijing 100048China

Formaldehyde(FA,a typical reactive carbonyl species)is a well-known environmental pollutant and a disease-related biomarker,making its sensitive and selective detection *** probes have been explored for FA perception in environment,intracellular media and in *** this review,we majorly conclude the recently represented fluorescence FA analysis based on small molecule *** general FA sensing mechanisms are first *** the FA detection in various environments,sensing tactics and performances are discussed in order of natural environment,living cells and in *** the end,this review discusses the challenges and future trends of FA detection based on fluorescent probes.

关键词： Formaldehyde Small molecule probe Fluorescence detection Environmental monitoring Intracellular analysis In vivo imaging

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Breakthroughs on tailoring membrane materials for ethanol recovery by pervaporation

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Chinese Journal of Chemical Engineering 2022年第12期52卷 19-36页

作者： Xia Zhan Xueying Zhao Zhongyong Gao Rui Ge Juan Lu Luying Wang Jiding Li key laboratory of Cleaner Production and Integrated resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China The Institute of Medicinal plant development The Chinese Academy of Medical Sciences(CAMS)and Peking Union Medical College(PUMC)Beijing 100193China beijing key laboratory of Lignocellulosic chemistry Beijing Forestry UniversityBeijing 100083China The State key laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Bioethanol, as a clean and renewable fuel, has gained increasing attention due to its major environmental benefits. Pervaporation(PV) is a promising and competitive technique for the recovery of ethanol from bioethanol fermentation systems due to the advantages of environmental friendliness, low energy consumption and easy coupling with fermentation process. The main challenge for the industrial application of ethanol perm-selective membranes is to break the trade-off effect between permeability and selectivity. As membrane is the heart of the pervaporation separation process, this article attempts to provide a comprehensive survey on the breakthroughs of ethanol perm-selective PV membranes from the perspectives of tailoring membrane materials to enhance PV separation performance. The research and development of polymeric and organic/inorganic hybrid membranes are reviewed to explore the fundamental structure-property-performance relationships. It is found that mixed matrix membranes with welldesigned membrane structures offer the hope of better control overphysi-/chemical microenvironment and cavity/pore size as well as size distribution, which may provide both high permeability and membrane selectivity to break the trade-off effect. The tentative perspective on the possible future directions of ethanol perm-selective membranes is also briefly discussed, which may provide some insights in developing a new generation of high-performance PV membranes for ethanol recovery.

关键词： Pervaporation Ethanol recovery Microstructure Polymeric membrane Mixed matrix membrane

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Adenosine cyclic phosphate with ultrasonic-assisted pectinase extraction alleviated allergic reactions in RBL-2H3 through inhibiting the influx of intracellular Ca^(2+)

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Food Science and Human Wellness 2023年第3期12卷 832-841页

作者： Qiao Bai Xiaoping Feng Yu Wang Chunyu Wu Ye Liu Jiao Sun Tianli Yue Fangyu Long College of Food Science and Engineering Northwest A&F UniversityYangling 712100China beijing key laboratory of plant resource research and development Beijing Technology and Business UniversityBeijing 100048China department of Breast Surgery The Affi liated Hospital of Qingdao UniversityQingdao 266000China

Jujube contains abundant cyclic adenosine monophosphate(cAMP)and the ultrasonic-assisted pectinase extraction(UAPE)conditions for obtaining the maximum cAMP yield from jujube were *** array design was applied to evaluate the effects of 4 variables by UAPE on cAMP *** results showed that the optimal cAMP yield(783.0μg/g)was derived at ratio of liquid to solid 5 mL/g,ratio of pectinase to raw material 1.5%,time 60 min and temperature 40℃.Moreover,the effect of cAMP on the anti-allergic function of action induced by immunoglobulin E(IgE)and its meschanism was investigated through establishing the sensitized cell model in rat basophilic leukemia(RBL-2 H3)cells using dinitrophenylated(DNP)-bovine serum albumin(BSA)-*** results showed that cAMP interfered with sensitized cells,effectively inhibited the occurrence of basophil degranulation in dose dependence,and significantly reduced the activity ofβ-hexosamindase(β-hex),at the optimal concentration of 50μg/*** level of anti-inflammatory factor interleukin-10(IL-10)was promoted and the content of pro-inflammatory factor tumor necrosis factor-α(TNF-α)was suppressed by *** addition,influx of intracellular Ca^(2+) was repressed *** results demonstrate that jujube cAMP regulated the cytokine balance in the allergy pathway through blocking the influx of extracellular Ca^(2+),with the prevention of allergy symptoms.

关键词： Ultrasonic-assisted pectinase extraction Cyclic adenosine monophosphate Rat basophilic leukemia cells Ca^(2+)influx Allergy

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Photoluminescent two-dimensional SiC quantum dots for cellular imaging and transport

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Nano research 2018年第8期11卷 4074-4081页

作者： Yu Cao Haifeng Dong Shaotao Pu Xueji Zhang research Center for Bioengineering and Sensing Technology Beijing Key Laboratory for Bioengineering and Sensing TechnologSchool of Chemistry & Biological Engineering University of Science & Technology Beijing Beijing 100083 China

Two-dimensional （2D） ultrathin SiC has received intense attention due to its broad band gap and resistance to large mechanical deformation and external chemical corrosion. However, the synthesis and application of ultrasmall 2D SiC quantum dots （QDs） has not been explored. Herein, we synthesize a type of monolayered 2D SiC QDs with advanced photoluminescence （PL） properties via a facile hydrothermal route. Their average size and thickness can be easily adjusted by altering the reaction time. The ultrasmall 2D SiC QDs exhibit a long fluorescence lifetime of 2.59 ps due to efficient quantum confinement. The applications of SiC QDs are demonstrated through labeling A549, HeLa, and NHDF cells and delivering agents for intracellular low-abundant microRNA （miRNA） detection. This advance in preparing photoluminescent SiC QDs is of great significance for broadening their potential in biomedical and optical applications.

关键词： two-dimensional SiC quantum dots cellular imaging intraceUular microRNA(miRNA) detection

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Genome Size Evolution Mediated by Gypsy Retrotransposons in Brassicaceae

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Genomics, Proteomics & Bioinformatics 2020年第3期18卷 321-332页

作者： Shi-Jian Zhang Lei Liu Ruolin Yang Xiangfeng Wang department of Crop Genomics and Bioinformatics College of Agronomy and BiotechnologyNational Maize Improvement Center of ChinaChina Agricultural UniversityBeijing 100094China beijing key laboratory of plant resources research and development School of SciencesBeijing Technology and Business UniversityBeijing 100048China College of Life Sciences Northwest A&F UniversityYangling 712100China

The dynamic activity of transposable elements(TEs)contributes to the vast diversity of genome size and architecture among ***,we examined the genomic distribution and transposition activity of long terminal repeat retrotransposons(LTR-RTs)in Arabidopsis thaliana(Ath)and three of its relatives,Arabidopsis lyrata(Aly),Eutrema salsugineum(Esa),and Schrenkiella parvula(Spa),in *** analyses revealed the distinct evolutionary dynamics of Gypsy retrotransposons,which reflects the different patterns of genome size changes of the four species over the past million *** rate of Gypsy transposition in Aly is approximately five times more rapid than that of Ath and Esa,suggesting an expanding Aly *** insertions in Esa are strictly confined to pericentromeric heterochromatin and associated with dramatic centromere *** contrast,Gypsy insertions in Spa have been largely suppressed over the last million years,likely as a result of a combination of an inherent molecular mechanism of preferential DNA removal and purifying selection at Gypsy ***,species-specific clades of Gypsy elements shaped the distinct genome architectures of Aly and Esa.

关键词： Genome Size Evolution Mediated by Gypsy Retrotransposons in Brassicaceae

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Au/g-C;N;heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

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Science China Materials 2022年第4期65卷 974-984页

作者： Lijing Wang Yafang Qi Hui Li Renquan Guan Fuli Zhang Qingfeng Zhou Dandan Wu Zhao Zhao Gang Zhou Zaicheng Sun Henan Engineering Center of New Energy Battery Materials Henan D&A Engineering Center of Advanced Battery MaterialsCollege of Chemistry and Chemical EngineeringInstitute of Architectural EngineeringShangqiu Normal UniversityShangqiu476000China Faculty of Physics Faculty of ChemistryNortheast Normal UniversityChangchun130024China Center of excellence for environmental safety and biological effects Beijing Key Lab for Green Catalysis and SeparationDepartment of Chemistry and Chemical EngineeringCollege of Environmental and Energy EngineeringBeijing University of TechnologyBeijing100124China key laboratory of Integrated Regulation and resource development on Shallow Lake of Ministry of Education College of EnvironmentHohai UniversityNanjing210098China

Photocatalytic water splitting with simultaneous degradation of organic pollutants is an effective strategy to alleviate the increasingly serious energy and environmental ***,the photocatalytic activity is restricted by the high charge recombination rate and limited sunlight ***,black phosphorus(BP)with a broad sunlight response range was utilized as a photosensitizer to enhance the photocatalytic performance of the Au/carbon nitride(CN)*** as-prepared BP/Au/CN exhibited a significantly enhanced H_(2) generation rate of 1400.8µmol h^(−1) g^(−1) under UV-vis light irradiation,which is almost 70 times higher than that of bare CN and BP/CN and 2 folds higher than that of the Au/CN ***,the optimal BP/Au/CN sample presented a waste-to-hydrogen production rate of 195.8µmol h^(−1) g^(−1) with the degradation of bisphenol A,verifying the synergistic effect of the ternary *** photocatalytic mechanism was systematically studied by the combination of experiments and theoretical *** improved photocatalytic performance was derived from the overall sunlight absorption ability of BP,effective electron transfer media and plasmonic character of Au nanoparticles,as well as the matched work function and strong interaction of the three components.A unidirectional electron transfer from BP to Au and then to CN was established,which effectively improved the charge transfer capability,resulting from the appropriate Ohmic contact of Au and BP and the Schottky barrier constructed in Au/CN hybrid.

关键词： Au/carbon nitride black phosphorus photocatalysis H_(2)production waste treatment

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