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Optimizing nitrogen management in the food system for sustainable development: a case study of Quzhou County

Frontiers of agricultural Science and Engineering 2024年第1期11卷 113-121页

作者： Fanlei MENG Menru WANG Yong HOU Lin MA Wenqi MA Xuejun LIU Fusuo ZHANG Wen XU College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentState Key Laboratory of Nutrient Use and ManagementNational Observation and Research Station of Agriculture Green Development(QuzhouHebei)China Agricultural UniversityBeijing 100193China Water Systems and Global Change Group Wageningen University&Research6700 AA Wageningenthe Netherlands Environmental Systems Analysis Group Wageningen University&Research6708 PB Wageningenthe Netherlands Key Laboratory of agricultural Water Resources Hebei Key Laboratory of Soil EcologyCenter for Agricultural Resources ResearchInstitute of Genetic and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China College of Resources and Environment Science Hebei Agricultural UniversityBaoding 071001China

Nitrogen(N) is an essential nutrient for food production. The rapid increase in population requires high inputs of N to meet the growing food demand. If not managed well, the substantial loss of N from the food system has multiple impacts on grain yield, air and water pollution, and the economic benefits of agricultural. Multi-objective(food security, environmental sustainability and economic sustainability) synergistic consideration of N management in the food system is still lacking. This study employed strategies for optimizing N management in the food system, using Quzhou County as a typical example on the North china Plain. Firstly, a food chain approach was adopted to understand drivers and reasons behind N losses from the food ***, a top-down approach was used to define multi-objective N management, taking into consideration food security, environmental sustainability and economic sustainability. Multi-objective N management aims to reduce N losses to the environment and increase N use efficiencies,while simultaneously increasing yields and economic benefits. Thirdly, 3R(reduce-retain-recycle) N management strategies were identified for specific crops and animals through a bottom-up approach and then analyzed the potential of these strategies to achieve the multi-objectives. Finally, there is a discussion of how to engage different stakeholders to promote the technologies implementation. This study provides new insights into the synergistic achievement of multi-objective N management in the food system and the development of environmentally-friendly agriculture.

关键词： Agriculture green development food system multi-objective nitrogen management

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Development of predictive models for egg freshness and shelf-life under different storage temperatures

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Food Quality and Safety 2021年第4期5卷 344-350页

作者： Chunli Quan Qian Xi Xueping Shi Rongwei Han Qijing Du Fereidoun Forghani Chuanyun Xue Jiacheng Zhang Jun Wang College of Food Science and Engineering Qingdao Agricultural UniversityQingdaoChina College of Life Science Tarim UniversityAlarChina College of Animal Science and Technology Qingdao Agricultural UniversityQingdaoChina Shandong Engineering Technology Research Center of Food Quality and Safety Control QingdaoChina Molecular Epidemiology Inc.Lake Forest ParkWAUSA

The objective of the present study was to develop models for egg freshness and shelf-life predictions for the selected evaluation indicators including egg weight,Flaugh unit(HU),and albumen *** were carried out at different storage temperatures for a total period of 29-32 *** data were collected and fitted in to Arrhenius equation for egg freshness,while the HU data were applied to a probability model for shelf-life *** results showed that egg weight,albumen height,and HU decreased significantly,while albumen pH increased with the extension of storage *** higher the storage temperature,the faster the egg quality *** addition,the bias factor,accuracy factor,and the standard error of prediction were selected to verify the developed quality *** rescaled R-square statistic,the Hosmer-Lemeshow goodness-of-fit statistic,and the receiver operating characteristic curve were used to evaluate the goodness-of-fit of the developed probability model for the shelf-life of eggs,which indicated that the presented predictive models can be used to assess egg freshness and predict shelf-life during different storage temperatures.

关键词： Eggs predictive models probability model shelf-life freshness

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Biology of Hippo signaling pathway:Skeletal muscle development and beyond

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Journal of Integrative Agriculture 2024年第6期23卷 1825-1838页

作者： Shuqi Qin Chaocheng Li Haiyan Lu Yulong Feng Tao Guo Yusong Han Yongsheng Zhang Zhonglin Tang Xinjiang Characteristic Livestock Breeding and Reproduction team College of Animal Science and TechnologyShihezi UniversityShihezi 832003China Lanzhou Veterinary Research Institute Chinese Academy of Agricultural SciencesLanzhou 730046China Kunpeng Institute of Modern Agriculture at Foshan Foshan 528226China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China

Global demand for farm animals and their meat products i.e.,pork,chicken and other livestock meat,is steadily *** the ongoing life science research and the rapid development of biotechnology,it is a great opportunity to develop advanced molecular breeding markers to efficiently improve animal meat production *** is an important study subject because of its crucial role in the regulation of organ *** recent years,with the increase of research on Hippo signaling pathway,the integrative application of multi-omics technologies such as genomics,transcriptomics,proteomics,and metabolomics can help promote the in-depth involvement of Hippo signaling pathway in skeletal muscle development *** Hippo signaling pathway plays a key role in many biological events,including cell division,cell migration,cell proliferation,cell differentiation,cell apoptosis,as well as cell adhesion,cell polarity,homeostasis,maintenance of the face of mechanical overload,*** influence on the development of skeletal muscle has important research value for enhancing the efficiency of animal husbandry *** this study,we traced the origin of the Hippo pathway,comprehensively sorted out all the functional factors found in the pathway,deeply analyzed the molecular mechanism of its function,and classified it from a novel perspective based on its main functional domain and mode of *** aim is to systematically explore its regulatory role throughout skeletal muscle *** specifically focus on the Hippo signaling pathway in embryonic stem cell development,muscle satellite cell fate determination,myogenesis,skeletal muscle meat production and organ size regulation,muscle hypertrophy and atrophy,muscle fiber formation and its transformation between different types,and *** roles in proliferation and regeneration are methodically summarized and analyzed *** summary and prospect of the Hippo signaling pathway within this a

关键词： Hippo skeletal muscle organ size myogenesis C2C12 livestock animals

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Geographical Distribution of Atmospheric Nitrogen Deposition in china and Its Response to Emission Control Policy

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Chinese Geographical Science 2024年第6期34卷 1017-1031页

作者： WEN Zhang YU Ziyin SI Ruotong XU Wen WANG Kai LIU Lei TANG Aohan ZHANG Fusuo KEITH Goulding LIU Xuejun State Key Laboratory of Nutrient Use and Management(SKL-NUM) College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China State Environmental Protection Key Laboratory of Environmental Pollution and Greenhouse Gases Co-control Chinese Academy of Environmental PlanningBejing 100041China Sustainable Soils and Crops Rothamsted ResearchHarpenden AL52JOUK College of Resources and Environment Yunnan Agricultural UniversityKunming 650201China

Atmospheric nitrogen(N)deposition has experienced significant change because of anthropogenic emissions,thereby exerting a pronounced impact on global ecosystem *** the rapid development of industry and agriculture and the swift expansion of urban areas in china since the 1980s,reactive nitrogen(Nr)emissions and N deposition have substantially *** pursuit of im-proving air quality,china has implemented a series of environmental protection policies and undertaken diverse measures to reduce pol-lutant *** paper is a review of multivariate data sources of atmospheric N deposition based on the results of literature from 1980 to 2023,and the original data from 1980 to 2020 are summarized,counted and *** main findings are as follows:1)the annual average atmospheric N deposition ranged from approximately 20-40 kg/(ha·yr),with the variability primarily linked to different assessment methods;2)regional disparities were evident in the spatial distribution of N deposition,with elevated values concentrated in areas with intense Nr emissions;3)atmospheric N deposition significantly declined after 2010,particularly the deposition of oxidized N,while reduced N deposition remained *** results reflect the effects of china's serious control policies on nitrogen oxide(NO.)emissions and strengthen the importance of agricultural NH3 emission *** study contributes to a comprehensive understanding of the N dynamics in the emission-deposition process,and provides a scientific foundation for the research of environmental protection,climate change,and sustainable development.

关键词： nitrogen deposition emission-deposition relationship reactive nitrogen hotspots emission control policy china

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Spatial heterogeneity of dead fuel moisture content in a Larix gmelinii forest in Inner Mongolia using geostatistics

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Journal of Forestry Research 2021年第2期32卷 569-577页

作者： Heng Zhang Shihao Ma Ping Kang Qiuliang Zhang Zhiwei Wu Forestry College of Inner Mongolia Agricultural UniversityHohhot 010019People’s Republic of China Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of EducationJiangxi Normal UniversityNanchang 330022People’s Republic of China

Spatial heterogeneity of fuel moisture content determines the spread rate and direction of a forest *** on the spatial heterogeneity of the moisture content of dead fuel of Larix gmelinii *** that:(1)fuel moisture content in litter layerhighest,the humus layer moderate,the litter layer the smallest,overall,the spatial heterogeneity of the semi-humus layer was the *** humus layer in the slant direction and three layers in a vertical direction showed strong spatial correlation with the lowest nugget coefficient of 0.0968;(3)the fuel moisture content of the humus layer showed strong spatial anisotropy;and,(4)estimating the total moisture content of the sampling site by stimulated sampling reasonable control of the sampling interval,and increasing the sampling intensity can reduce the *** the sampling intensity is increased to more than 16 and the sampling interval 3 m,the standard error is<15%.The spatial heterogeneity of fuel moisture content is best revealed by increasing sampling density,sampling in different fire seasons,and in different slope directions and *** results can provide a scientific basis for forest fire prediction and prevention.

关键词： Forest combustibles Spatial heterogeneity Analog sampling Standard error

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Lotus root polysaccharide inhibits the growth of ovarian cancer cells by blocking the cell cycle

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Traditional Medicine Research 2023年第8期8卷 18-24页

作者： Pei-Yu Dong Sheng-Lin Liang Long Li Jing Liu Xi-Feng Zhang College of Veterinary Medicine Qingdao Agricultural UniversityQingdao 266100China Instrumental Analysis Center of Qingdao agricultural university Qingdao 266100China

Background:Lotus root polysaccharide is a natural *** a new anticancer drug,it has anti-proliferation and pro-apoptotic effects in a variety of tumour cells,but its effect on ovarian cancer is not *** study,we attempted to elucidate the role and mechanism of lotus root polysaccharide in SKOV3 ***:In this study,the effect of lotus root polysaccharide on mRNA of SKVO3 cells was analyzed by RNA-seq,and verified by Western blot,flow cytometry,fluorescence detection and other ***:The results showed that lotus root polysaccharide could inhibit the proliferation of ovarian cancer ***,a change in gene expression was found by *** the mRNA(differentially expressed mRNA)with these differences,significant changes in the cell cycle were found by Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment ***,the proportion of cells in S phase decreases and G2/M phase increases,as seen with propidium iodide *** Set Enrichment Analysis showed inhibition of the cell cycle,and the gene and protein expression of CDK1,CCNA1 and CCNB1 were ***:Our results show that lotus root polysaccharide can inhibit the growth of SKOV3 cells in vitro by blocking the cell cycle at the G2/M phase,which reveals the potential of lotus root polysaccharide in the treatment of ovarian cancer.

关键词： lotus root polysaccharide ovarian cancer SKOV3 RNA-seq

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Microstructure failure in ferrite-martensite dual phase steel under in-situ tensile test

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Journal of Iron and Steel Research International 2017年第3期24卷 350-356页

作者： Rui-bin Gou Wen-jiao Dan Wei-gang Zhang Min Yu Chun-yu Zhang Yin-hu Qiao Lu Ma Department of Engineering Mechanics Shanghai Jiao Tong University Shanghai 200240 China School of Mechanical Engineering Anhui Science and Technology University Bengbu 233100 Anhui China Innovation Center for Advanced Ship and Deep Sea Exploration Shanghai Jiao Tong University Shanghai 200240 China College of Architecture Anhui Science and Technology University Bengbu 233100 Anhui China

To investigate microstructure failure in ferrite-martensite dual phase steel,in-situ observations were performed on multiple plate DP800 specimens during uniaxial tensile tests. Microstructure evolution of the observed region was investigated in details. The experimental data showed that micro-cracks in various regions differed in the initiation time,and micro-failures mainly occurred from the locations with typical characteristics of stress concentration（ i. e. ferrite interiors,the interfaces of ferrite-martensite grains and the martensite-martensite interfaces）. Growth of micro-crack generally experienced the following stages： cracking from martensite boundaries,tiny particles in ferrite interiors,or martensite interiors,propagating in ferrite,bypassing martensite boundaries,or passing through martensite-martensite interfaces,finally ending on martensite boundaries. Martensite was one important source of micro-failure and changed the propagation of micro-cracks significantly. Microstructure deformation was inhomogeneous in the stage of plastic deformation.

关键词： Micro-fracture Dual phase steel Ferrite Martensite In-situ observation

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Anisotropy of nickel-based superalloy K418 fabricated by selective laser melting

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Progress in Natural Science:Materials International 2018年第4期28卷 496-504页

作者： Zhen Chen Shenggui Chen Zhengying Wei Lijuan Zhang Pei Wei Bingheng Lu Shuzhe Zhang Yu Xiang State Key Laboratory of Manufacturing System Engineering Xi'an Jiaotong University Xi'an National Institute of Additive Manufacturing Co. Ltd. School of Mechanical Engineering Dongguan University of Technology School of Materials Science and Engineering South China University of Technology

Selective laser melting(SLM) is a promising additive manufacturing(AM) technology for fabricating the near net-shaped parts by selectively melting and solidifying a thin powder layer with a high-intensity laser beam according to the CAD data for arbitrary components. In this work, Ni-based superalloy K418 samples were fabricated by selective laser melting(SLM). To evaluate the anisotropic mechanical behavior of the SLM processed K418 samples with layer-by-layer melting, the samples were manufactured parallel(transverse specimens) and vertical(longitudinal specimens) to the building direction on the substrate. The microstructural anisotropy analysis was performed by optical microscopy(OM) and scanning electron microscopy(SEM).Electron backscatter diffraction(EBSD) analysis was used to identify their crystallographic preferred orientation(texture) and to correlate the anisotropy of the mechanical strength with the texture of the material. The results showed that the transverse specimens had slightly higher yield strength, but much significantly higher ductility than that of the transverse specimens with the elongated columnar grains along the building direction.

关键词： Selective laser melting Ni-based Superalloy K418 Anisotropy Microstructure Mechanical behavior

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Starch Accumulation and Enzyme Activities Associated with Starch Synthesis in Maize Kernels

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agricultural Sciences in china 2007年第7期6卷 808-815页

作者： ZHANG Hai-yan DONG Shu-ting GAO Rong-qi SUN Qing-quan College of Agronomy Shandong Agricultural University/Shandong Key Laboratory of Crop Biology Taian 271018 P.R.China College of Plant Science and Technology Qingdao Agricultural University Qingdao 266109 P.R.China

The filling rate and the starch accumulation in developing maize kernel were analyzed. The changes of enzyme activities associated with sucrose metabolism and starch biosynthesis were investigated. The purpose is to discuss the enzymatic mechanisms responsible for starch synthesis. Two types of maize cultivars （Zea mays）, high starch maize （Feiyu 3） and normal maize （Yuyu 22）, were grown in a corn field. The factors involved in starch synthesis were performed during the growth period. The kernel filling rate, the sucrose content, the starch accumulating rates and the activities of SS （sucrose synthase）, GBSS （granule-bound starch synthase）, SBE （starch branching enzyme） of Feiyu 3, which has high starch content, were significantly higher than those of Yuyu 22, which has low starch content, after 10 DAP （days after pollination）. Correlation analysis indicated that ADPGPPase （ADP-glucose pyrophosphorylase） and DBE （starch debranching enzyme） were not correlated with the starch accumulating rates and the kernel filling rate, but the SS activity at the middle and late period were highly significantly correlated with the starch accumulating rates and the kernel filling rate. The GBSS activity was highly significantly correlated with the amylose accumulating rate, but not correlated with the kernel filling rate. The SBE activity was highly significantly correlated with the amylopectin accumulating rate and the kernel filling rate. It was not ADPGPPase and DBE, but SS was the rate-limiting factor of starch biosynthesis in developing maize kernels. GBSS had an important effect on amylose accumulation, and SBE had a significant effect on amylopectin accumulation.

关键词： maize (Zea mays) kernel amylose amylopectin kernel filling rate enzyme activity

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Facile SERS screening of melamine in bovine milk with 2D printed AgNPs/glass fabric filter paper as the flexible substrate

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Food Science and Human Wellness 2024年第5期13卷 2595-2600页

作者： Shiyao Wang Yanan Zhao Xiao Wei Yisheng Chen College of Food Science and Engineering Shanxi Agricultural UniversityTaigu 030801China Food Nutrition and Safety Institute Shanxi Agricultural UniversityTaiyuan 030031China School of Food Science and Technology Jiangnan UniversityWuxi 214122China

Melamine is one of the most frequently detected adulterants in dairy *** current study proposes a surface-enhanced Raman spectroscopy(SERS)-based analytical tool for fast and reliable screening of melamine in bovine milk.A hand-held Raman spectrometer was used in conjunction with a substrate composed of silver nanoparticles(AgNPs)that was 2D printed onto glass fiber(GF)filter *** optimized conditions,a sensitive and fingerprint-like signal at 674 cm^(-1) was *** AgNPs/GF substrate exhibited high sensitivity to melamine in milk down to 1.9498×10^(-5)mg/mL,which is well below the USA and EU safety limits(2.5×10^(-3)mg/mL).Remarkably,the proposed technology was also highly reproducible,showing spot-to-spot and block-to-block variations below 3.3%and 4.9%at 674 cm^(-1) in Raman intensity,*** characteristic peak intensity and concentration of melamine showed an acceptable linear relationship(R^(2)=0.9909)within the range of 0.0001-1 mg/***,the method established in this study can provide an efficient and effective method for the quantitative target screening and detection of melamine in dairy products.

关键词： 2D print Melamine Milk Surface-enhanced Raman spectroscopy(SERS) flexible substrate

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