作者机构：
[Zhou, Ding; Wang, Hui] Hunan Agr Univ, Coll Water Resources & Civil Engn, Changsha 410128, Peoples R China.;[Wang, Xiangxiang] Anhui Jianzhu Univ, Sch Environm & Energy Engn, Hefei 230071, Peoples R China.;[Wang, Fangfang; Ma, Donghao; Zhang, Jiabao] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, State Expt Stn Agroecosyst Fengqiu, Nanjing 210018, Peoples R China.
通讯机构：
[Ma, DH ] C;Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, State Expt Stn Agroecosyst Fengqiu, Nanjing 210018, Peoples R China.
关键词：
AquaCrop;North China Plain;water-stress simulation
摘要：
To apply AquaCrop to the study of agricultural soil moisture in the North China Plain, a water-treatment experiment on summer maize was carried out at the Fengqiu experimental station of the Chinese Academy of Sciences from 2017 to 2018. A water treatment was used to achieve field water capacities of 20 (W1), 40 (W2), and 60 (W3) cm soil layers under irrigation, and a rain-fed treatment (W0) was added. The model parameters were calibrated using the measured data in 2017. Then, they were applied to 2018 to verify the ability of the model to simulate water stress. The results showed that the variation trends for crop yield, canopy coverage, total soil water content, and the curve in the growth cycle simulated via AquaCrop were consistent with the actual observations; the results of a discrete analysis showed that the values of b (regression coefficient), R2 (determination coefficient), and EF (efficiency) were close to 1, and the values of the RMSE (root mean square error) were close to 0, which proved that the model could simulate dynamic changes in summer maize yield, canopy coverage, and total soil water content well. AquaCrop had good applicability in the North China Plain and could be applied to the study of agricultural water consumption and water-use efficiency in this area. The simulated values obtained can serve as an easily obtainable source of long-term experimental data in areas with frequent non-extreme weather events.
摘要：
L<bold>-</bold>Tryptophan (L-Trp), one of the essential amino acids, is crucial for human physiological homeostasis and a limiting amino acid in animal feed. In addition, L-Trp is a precursor of some important biomolecules in the body, such as pentraxin and melatonin. Disorders of L-Trp metabolism in the body may cause Alzheimer's or Parkinson's disease. Therefore, monitoring L-Trp levels in the body fluids quickly and accurately is essential. A colorimetric biosensor was developed for the rapid detection of L-Trp in solutions by coupling a novel, screened, and validated peptide aptamer with Au nanoparticles via the Au-S bond. The biosensor showed a wide linear detection range of 1 mu M - 1000 mu M, and in addition, it was simple to construct, and the reaction time was as short as 10 s. In the analysis of L-Trp in actual porcine serum samples, the relative standard deviations were 4.52 % to 3.01 % compared with those of the high-performance liquid chromatography method, and the spiked recoveries were 99.2 % to 100.2 %. This new type of recognition probe is likely to gain attention in the field of bioanalysis owing to its biocompatibility, ease of modification, and easy linkage to nanomaterials.
通讯机构：
[Pufeng Qin; Zhibin Wu] C;[Hui Wang] D;Department of Chemical Engineering, University College London, London WC1E 7JE, UK<&wdkj&>College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China<&wdkj&>Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha 410128, PR China
摘要：
As a metal-free polymer, graphitic carbon nitride (g-C3N4) has spurred extensive consideration over their inor-ganic counterparts due to the unique physical and chemical properties. However, the low specific surface area, high charge recombination rate and insufficient light absorption limit its application in the field of photo -catalysis. Sulfur doping has been demonstrated as an efficient strategy for to promote light absorption and radiative carrier separation. On the basis of sulfur-doped carbon nitride, many of its modified composites have been synthesized and applied in photocatalysis, and have achieved dazzling results. Here, we introduce the basic properties of sulfur doped carbon nitride and its preparation method, and then discuss the effective method of controlling the introduction of sulfur doped g-C3N4. In addition, the achievement of sulfur doped g-C3N4 for several applications, including water splitting, carbon dioxide reduction, organic compounds degradation, inorganic matter transformation, nitrogen fixation and bacteria disinfection, were comprehensively reviewed. Finally, outstanding challenges and prospective perspectives are discussed, which might provide a new idea for the photocatalysts design for photocatalytic activity improvement.
摘要：
Carbon quantum dots (CQDs), as a non-toxic and safe green material, exhibit good electron transport ability and up-conversion photoluminescence, which can be used to hinder the recombination of photogenerated electron-hole pairs and broaden the light absorption range. In recent years, remarkable progress has been made in the synthesis and application of CQDs decorated photocatalysts. In this paper, the precursor materials of CQDs and their physical and chemical properties are first introduced, and then the common preparation methods of CQDs decorated photocatalysts such as hydrothermal method, solvothermal method, calcination method, precipitation method and sol-gel method are mainly discussed. The effects of reaction conditions, precursor and reaction medium on particle size, morphology and molecular structure of CQDs decorated photocatalysts were summa-rized. In addition, the application and recent progress of CQDs decorated photocatalysts, including degradation of organic pollutants in water, production of hydrogen, and conversion of carbon dioxide into fuel, are reviewed. Finally, we put forward the challenges and suggestions for future research of CQDs decorated photocatalysts.
摘要：
L-Lysine (L-Lys) quantification in serum using a novel and highly selective amperometric biosensor has been reported. In this study, an efficient, enzyme-free, and simple anti-fouling biosensor was developed based on a self-screened peptide aptamer. A glassy carbon electrode (GCE) was used to construct anti-fouling interfaces by modifying its surface with polyaniline (PANI) polymer. The peptide aptamer, Cys-Pro-Pro-Pro-Pro-Arg-Glu-AsnIle-Gln-Arg-Leu-Thr, was then immobilized onto this electrode via an electroactive cysteine linker and its potential in the determination of L-Lys was examined. Under optimised experimental conditions, the peptide modified electrodes exhibited excellent anti-fouling and electrochemical sensing. The biosensor was effective in resisting biofouling in a wide range of serum samples and amino acid solutions, and its linear range for L-Lys detection ranged from 1 nM to 10 mM, with a comparatively lower detection limit (0.3 nM; S/N = 3). The antifouling biosensor could detect L-Lys in real serum samples, and this approach of designing peptide aptamers based low-fouling biosensors can easily be extended to the development of a bio-sensing platform system for a variety of other metabolites.
作者：
Ji, Chunxiao;Feng, Jia;Li, Siying;Yang, Hui;Wang, Hui;...
期刊：
Viruses,2023年15(1):138- ISSN：1999-4915
通讯作者：
Tao Zhang<&wdkj&>Yu He<&wdkj&>Wei Liu
作者机构：
[Liu, Wei; Ji, Chunxiao] Hunan Agr Univ, Coll Vet Med, Changsha 410128, Peoples R China.;[Wang, Hui; Wang, Hongliang; Geng, Xiangchang; He, Yu; Liu, Zengzai; Feng, Jia; Yang, Hui; Zhang, Tao] Changsha Anim Dis Control Ctr, Changsha 410013, Peoples R China.;[Li, Siying] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Peoples R China.
通讯机构：
[Tao Zhang; Yu He; Wei Liu] A;Authors to whom correspondence should be addressed.<&wdkj&>Changsha Animal and Plant Disease Control Center, Changsha 410000, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
摘要：
The objective of this study was to examine longitudinal trends in the prevalence of dogs that are successfully immunized against rabies virus (as measured by sufficient serum antibodies) in Changsha, an urban center of China. The secondary objective was to investigate the factors affecting the seroprevalence of rabies virus antibodies in dogs. In this study, 4515 canine serum samples were collected from 57 pet hospitals (immunization points) during the period of 2015–2021 in five major urban areas of Kaifu, Furong, Tianxin, Yuhua, and Yuelu in Changsha, China. The enzyme-linked immunosorbent assay (ELISA) method was used to analyze the level and trend of rabies virus antibodies in serum and further evaluate the potential factors affecting the immunization effect from five factors: sex, age, time interval after most recent vaccination and sample collection, number of vaccinations, and vaccine manufacturer. The results showed that the seroconversion from the urban dog in Changsha steadily increased from 46.13% to 73.38% during 2015–2017. The seropositivity prevalence remained above the international standard (70%) from 2018 to 2020 and up to 90.99% in 2021. Further analysis showed that the seroconversion of rabies virus among dogs was significantly affected by the age, the number of vaccinations, time interval after the most recent vaccination and sample collection, and vaccine manufacturer, while sex had less influence. The overall rabies vaccination situation in urban areas of Changsha generally meets international standards, with only a few areas showing low levels of antibodies in dogs after vaccination and risk of infectiousness. Therefore, it is recommended that the first vaccination should be given when the dog is about three months old and regularly repeated every year after that. At the same time, antibody concentrations in dogs, especially in newborn puppies and older dogs, need to be tested promptly after vaccination at the required time to ensure that they are at a high level of immune protection, which can strengthen the supervision of rabies.
通讯机构：
[Hui Wang] C;College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Many studies have shown that abiotic stresses could severely impact crop growth and yield, but a comprehensive review from a bibliometric perspective is lacking. This study explores how the research direction of rice under drought, waterlogging or both stresses has evolved over the past three decades, based on bibliometric analysis using Vosviewer 1.6.15 and HistCite Pro. Data were collected from the academic database of Web of Science. The results showed that 12 journals had a high number of publications and highly local citations. Meanwhile, the three journals of Field Crops Research, Journal of Experimental Botany and Plant Physiology could be the most influential leaders in this field. The author Arvind Kumar had the highest contribution to the output of articles, and Lizhong Xiong had a greater impact on the field. China, and Chinese institutions, were dominant in terms of the number of articles, but Japan, Germany, UK and institutions in USA and Japan had a higher quality of publications on average. Scholars are concerned with using transgenic methods for improving rice productivity with increasing abiotic stress tolerance; the research topics of rice cultivars, irrigation, water-use efficiency and soil fertility may be gradually shifting from a single theme to intertwining with the themes of genomics and abiotic/biotic resistance with climate change in the future.
作者机构：
[Yin, Zerun; Yu, Jinpeng; Wang, Hui; Yang, Quangang; Zhuge, Yuping; Pan, Hong; Lou, Yanhong] Shandong Agr Univ, Coll Resources & Environm, Natl Engn Res Ctr Efficient Utilizat Soil & Fertil, Tai An 271018, Shandong, Peoples R China.;[Yin, Zerun; Han, Xinran] Hunan Agr Univ, Changsha 410125, Hunan, Peoples R China.
通讯机构：
[Yanhong Lou; Yuping Zhuge] N;National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China
通讯机构：
[Hui Wang] C;College of Water Resources and Civil Engineering, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Irrigation with treated domestic wastewater (TWW) affects the physicochemical properties of soils, but little research has been conducted for different soils in subtropical regions. Consequently, in order to evaluate the effects of domestic wastewater (treated by A2/O process) irrigation on the hydraulic properties, soil salinity and sodicity of four typical subtropical agricultural soils, a soil-column experiment was conducted for one year with eight cycles of wetting and drying. A clay soil (red soil), a silty clay soil (aquic soil), a loamy clay soil (purple soil), and a silty clay loam soil (paddy soil) were subjected to three irrigation modes: (a) cyclic irrigation with TWW (W1), (b) alternating irrigations with TWW and distilled water (W2), and (c) irrigation with distilled water as a control (CK). Our results indicated that EC values increased significantly (p < 0.05) with TWW irrigation for all the soils. TWW irrigation increased the concentrations of Na+, K+, Ca2+, Mg2+, and SAR, ESP values in the red soil, for the W2 treatment especially. In contrast, it decreased Na+, K+, Ca2+, Mg2+ accumulation and ESP values in the aquic soil. Moreover, the soil physical properties exhibited correlations with soil salinity. The saturated hydraulic conductivity (Ks) of the red soil, purple soil, and paddy soil were lower under the W1 and W2 treatments than CK, but the Ks of the aquic soil for W1 were 183.7% higher than that under CK. The unsaturated hydraulic conductivity (K psi) of the purple soil and paddy soil decreased after TWW irrigation, but those of the aquic soil increased. The water-retention capacities (WRCs) of the TWW-irrigated red soil and aquic soil decreased as a consequence of a shift in the pore-size distribution toward wider pores, but the those of the purple soil and paddy soil improved, associated with narrower pores. The W2 treatment alleviated the impact of TWW on the aquic soil, purple soil, and paddy soil but negatively affected the physical properties, salinity, and sodicity of the red soil. Our results will provide useful information for managing soil and water under TWW irrigation in subtropical regions.
