摘要:
Over the past few years, high-valent iron oxo species (Fe(IV)) have shown considerable promise. However, an improved solution is needed for the bottleneck of unsatisfactory electron transfer efficiency in Fe-based catalyst/PMS systems. In this study, Enteromorpha-derived biochar was pyrolyzed with iron and barium titanate (FeBCBa). Under ultrasonic treatment, it removes 94.5% of atrazine (10mg/L) within 60min, and is environmentally friendly. BaTiO(3)'s piezoelectricity enhances Fe(IV) production in FeBCBa, resulting in superior performance. In the ultrasonic condition, the apparent reaction rate was 1.42 times higher than in the non-ultrasonic condition. Using density functional theory calculations, it can be shown that due to the Fe dopant, electrons in ATZ's LUMO are more easily transferred to the catalyst's HOMO, which is beneficial for ATZ removal. The results of this study provide new guidance for constructing stable and efficient catalysts for environmental remediation.
摘要:
Abstract: β-ocimene is a plant communication signaling molecule that can induce plant defense responses. In this paper, in order to investigate the control effect of β-ocimene on tobacco Potato virus Y (PVY) disease, under indoor conditions, the influence of β-ocimene on the incidence rate and disease index of PVY was analyzed; under field conditions, the prevention and control effects of β-ocimene and conventional chemical pesticides on PVY were analyzed simultaneously. The test results are as follows: According to the analysis of indoor pot experiment, β-ocimene has a significant prevention and control effect on PVY. Compared with the control, the incidence rate decreased by 67.10%, the disease index decreased by 70.60%, and the virus accumulation decreased by 1.7 times. The results of field experiments showed that the control effect of β-ocimene on PVY was significantly better than that of chemical pesticides, with a control effect of 58.23%~64.12% on PVY; further statistical analysis of the increase rate of PVY showed that the disease index of PVY induced by β-ocimene only in-creased by 10.0%, significantly higher than that of chemical pesticides and controls. The above results all indicate that β-ocimene has significant efficacy in preventing and controlling PVY. This study provides a new approach to the prevention and control of PVY in the field.#@#@#摘要: β-罗勒烯是一种能诱导植物产生防御反应的植物通讯信号分子。本文为了探究β-罗勒烯对烤烟马铃薯Y病毒病(PVY)的控制效果,在室内条件下,分析了β-罗勒烯对PVY的发病率及病情指数的影响;在大田条件下,同时分析了β-罗勒烯与常规化学农药对PVY的防控效果。试验结果如下:通过室内盆栽试验分析,β-罗勒烯对PVY具有显著的防控效果,相比于对照发病率下降了67.10%,病情指数下降了70.60%,病毒积累量减少了1.7倍。大田试验结果显示,β-罗勒烯对PVY的控制效果显著优于化学农药,对PVY的控制效果达到58.23%~64.12%;进一步对PVY病情上升率进行统计,结果表明,经β-罗勒烯诱导后PVY的病情指数仅上升了10.0%,显著高于化学农药及对照。以上结果均表明,β-罗勒烯在防控PVY方面具有显著功效。本研究为大田防控PVY提供了新的途径。
通讯机构:
[Liu, CJ ] H;Hunan Agr Univ, Coll Informat & Intelligence, Changsha, Peoples R China.
关键词:
Smartphone addiction;Cross-sectional network analysis;Cross-lagged panel network analysis;Interaction of Person-Affect-Cognition-Execution model;The network theory of mental disorder
摘要:
Smartphone addiction is a global problem affecting university students. Previous studies have explored smartphone addiction and related factors using latent variables. In contrast, this study examines the role of smartphone addiction and related factors among university students using a cross-sectional and cross-lagged panel network analysis model at the level of manifest variables. A questionnaire method was used to investigate smartphone addiction and related factors twicewith nearlysix-month intervals among 1564 first-year university students (M = 19.14, SD = 0.66). The study found that procrastination behavior, academic burnout, self-control, fear of missing out, social anxiety, and self-esteem directly influenced smartphone addiction. Additionally, smartphone addiction predicted the level of self-control, academic burnout, social anxiety, and perceived social support among university students. Self-control exhibited the strongest predictive relationship with smartphone addiction. Overall, self-control, self-esteem, perceived social support, and academic burnout were identified as key factors influencing smartphone addiction among university students. Developing prevention and intervention programs that target these core influencing factors would be more cost-effective.
摘要:
To evaluate the functional effects of APS (Astragalus polysaccharide) on Furong crucian carp, APS-supplemented diets (0.00 %, 0.05 %, 0.10 % and 0.15 %) were prepared and utilized in feeding experiment. The results showed that the 0.05 % APS group has the highest weight gain rate and specific growth rate, and the lowest feed coefficient rate. In addition, 0.05 % APS supplement could improve muscle elasticity, adhesiveness and chewiness. Moreover, the 0.15 % APS group had the highest spleen-somatic index and the 0.05 % group had the maximum intestinal villus length. 0.05 % and 0.10 % APS addition significantly increased T-AOC and CAT activities while MDA contents decreased in all APS groups. The plasma TNF-& alpha; levels in all APS groups significantly increased (P<0.05), and the 0.05 % group showed the highest TNF-& alpha; level in spleen. In APS addition groups, the tlr8, lgp2 and mda5 gene expressions were significantly elevated, while xbp1, caspase-2 and caspase-9 expressions decreased in uninfected and A. hydrophila-infected fish. Finally, higher survival rate and slower disease outbreak rate were observed in APS-supplemented groups after being infected by A. hydrophila. In conclusion, Furong crucian carp fed by APS-supplemented diets possesses elevated weight gain rate and specific growth rate, and improved meat quality, immunity and disease resistance.
通讯机构:
[Kang Yao; Qian Jiang] N;National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China<&wdkj&>College of Animal Science and Technology, Hunan Agricultural University, Changsha 410000, China<&wdkj&>National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China<&wdkj&>Institute of Subtropical Agriculture, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing 100008, China
关键词:
alpha-ketoglutarate;bone growth;apparent digestibility of phosphorus;piglets
摘要:
Simple Summary Intensive farming in the modern pig industry has resulted in an increase in phosphorus pollution, which is a major environmental concern. The dietary intake of phosphorus is primarily employed for the growth and metabolism of pig bones. Dietary strategies to improve bone growth can be utilized to optimize the utilization of dietary phosphorus and reduce its release into the environment. Interestingly, recent studies have shown that alpha-ketoglutarate, an intermediate metabolite in the tricarboxylic acid cycle, improves osteogenesis in vitro. Therefore, we hypothesized that dietary alpha-ketoglutarate supplementation would have a positive effect on bone growth, and thereby improve the utilization of dietary phosphorus and calcium in piglets. In the present study, we found that dietary alpha-ketoglutarate supplementation improves bone growth, such as bone density, length, and weight in piglets. Of note, our study further demonstrated that alpha-ketoglutarate supplementation improves the apparent ileal and total tract digestibility of phosphorus and calcium in piglets' diets. Our findings may provide a nutritional strategy for diminishing phosphorus pollution originating from the pig industry. Phosphorus (P) pollution from modern swine production is a major environmental problem. Dietary interventions to promote bone growth can improve the utilization of dietary P, and thereby reduce its emission. Recent in vitro studies have shown that alpha-ketoglutarate (AKG) exerts a pro-osteogenic effect on osteoblast cells. This study aimed to evaluate the effects of AKG supplementation on bone growth, P and Ca digestion, and the gut microbial profile in piglets. Thirty-two piglets were randomly assigned into two dietary groups. The piglets were fed a basic diet containing 10 g/kg AKG or 10 g/kg maize starch (control) for 28 days. On days 21-28, titanium dioxide was used as an indicator to determine the apparent digestibility of P. AKG supplementation improved the bone mineral density, length, weight, and geometrical and strength properties of the femur and tibia. Furthermore, AKG supplementation increased apparent ileal and total tract digestibility of P. Colonic microbiota analysis results showed that AKG supplementation increased alpha-diversity and beneficial bacteria, including Lactobacillus and Clostridium butyricum, and decreased nitrogen fixation and chemoheterotrophy. Together, AKG supplementation improves bone growth, the utilization of dietary P, and the colonic microbial profile, which may provide a nutritional strategy for diminishing P pollution originating from the pig industry.
作者机构:
[Wei Huang; Zhaobin Dong] State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center, Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193 China;[Hongbing Luo] Maize Engineering and Technology Research Center of Hunan Province, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China;Tianjin Key Laboratory of Intelligent Breeding of Major Crops, Fresh Corn Research Center of BTH, College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin, 300384 China;[Shiyi Xie] Maize Engineering and Technology Research Center of Hunan Province, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China<&wdkj&>State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center, Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193 China;[Weiwei Jin] State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center, Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193 China<&wdkj&>Tianjin Key Laboratory of Intelligent Breeding of Major Crops, Fresh Corn Research Center of BTH, College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin, 300384 China
通讯机构:
[Zhaobin Dong] S;State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center, Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193 China
摘要:
Maize (Zea mays) cultivation is strongly affected by both abiotic and biotic stress, leading to reduced growth and productivity. It has recently become clear that regulators of plant stress responses, including the phytohormones abscisic acid (ABA), ethylene (ET), and jasmonic acid (JA), together with reactive oxygen species (ROS), shape plant growth and development. Beyond their well-established functions in stress responses, these molecules play crucial roles in balancing growth and defense, which must be finely tuned to achieve high yields in crops while maintaining some level of defense. In this review, we provide an in-depth analysis of recent research on the developmental functions of stress regulators, focusing specifically on maize. By unraveling the contributions of these regulators to maize development, we present new avenues for enhancing maize cultivation and growth while highlighting the potential risks associated with manipulating stress regulators to enhance grain yields in the face of environmental challenges. This article is protected by copyright. All rights reserved.
摘要:
Bio-drying is a practical approach for treating food waste (FW). However, microbial ecological processes during treatment are essential for improving the dry efficiency, and have not been stressed enough. This study analyzed the microbial community succession and two critical periods of interdomain ecological networks (IDENs) during FW bio-drying inoculated with thermophiles (TB), to determine how TB affects FW bio-drying efficiency. The results showed that TB could rapidly colonize in the FW bio-drying, with the highest relative abundance of 5.13%. Inoculating TB increased the maximum temperature, temperature integrated index and moisture removal rate of FW bio-drying (55.7 degrees C, 219.5 degrees C, and 86.11% vs. 52.1 degrees C, 159.1 degrees C, and 56.02%), thereby accelerating the FW bio-drying efficiency by altering the succession of microbial communities. The structural equation model and IDEN analysis demonstrated that TB inoculation complicated the IDENs between bacterial and fungal communities by significantly and positively affecting bacterial communities (b = 0.39, p < 0.001) and fungal communities (b = 0.32, p < 0.01), thereby enhancing interdomain interactions between bacteria and fungi. Additionally, inoculation TB significantly increased the relative abundance of keystone taxa, including Clostridium sensu stricto, Ochrobactrum, Phenylobacterium, Microvirga and Candida. In conclusion, the inoculation of TB could effectively improve FW bio-drying, which is a promising technology for rapidly reducing FW with high moisture content and recovering resources from it.
摘要:
HYPOTHESIS: Construction of dual gatekeepers-functionalized mesoporous organic silica nanoparticles (MONs) with both physical and chemical mechanisms for modulated drug delivery properties provides one solution to the extracellular stability vs. intracellular high therapeutic efficiency of MONs that hold great potential for clinical translations. EXPERIMENTS: We reported herein facile construction of diselenium-bridged MONs decorated with dual gatekeepers, i.e., azobenzene (Azo)/polydopamine (PDA) for both physical and chemical modulated drug delivery properties. Specifically, Azo can act as a physical barrier to block DOX in the mesoporous structure of MONs for extracellular safe encapsulation. The PDA outer corona serves not only as a chemical barrier with acidic pH-modulated permeability for double insurance of minimized DOX leakage in the extracellular blood circulation but also for inducing a PTT effect for synergistic PTT and chemotherapy of breast cancer. FINDINGS: An optimized formulation, DOX@(MONs-Azo3)@PDA resulted in approximately 1.5 and 2.4 fold lower IC50 values than DOX@(MONs-Azo3) and (MONs-Azo3)@PDA controls in MCF-7 cells, respectively, and further mediated complete tumor eradication in 4T1 tumor-bearing BALB/c mice with insignificant systematic toxicity due to the synergistic PTT and chemotherapy with enhanced therapeutic efficiency.
作者:
Bo Li;Zhangshu Xie;Chengxuan Zhou;Xing Peng;Hang Dong;...
期刊:
Biomass Conversion and Biorefinery,2023年:1-9 ISSN:2190-6815
通讯作者:
Zhigang Yi<&wdkj&>Zhi Zhou
作者机构:
[Bo Li; Hang Dong; Lingling Yao] School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, PR China;[Zhangshu Xie; Chengxuan Zhou] School of Agriculture, Hunan Agricultural University, Changsha, PR China;[Xing Peng; Zhigang Yi] Hunan Renhe Environment Co., LTD, Changsha, PR China;Hunan Engineering Research Center for Biochar, Changsha, PR China;[Zhi Zhou] School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, PR China<&wdkj&>Hunan Engineering Research Center for Biochar, Changsha, PR China
通讯机构:
[Zhigang Yi] H;[Zhi Zhou] S;Hunan Renhe Environment Co., LTD, Changsha, PR China<&wdkj&>School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, PR China<&wdkj&>Hunan Engineering Research Center for Biochar, Changsha, PR China
关键词:
Dark tea residue;Wet torrefaction;Pyrolysis;PP;Three-phase product
摘要:
In this study, dark tea residue (DTR) and polypropylene (PP) were used as the experimental raw material, and the method that combined wet torrefaction (hydrothermal carbonization) and pyrolysis was used to analyze and study it – analyzing the surface functional group composition of pyrolytic carbon by Fourier infrared spectrometer and analyzing the porosity and specific surface by specific surface area analyzer. We used the GC and the GC-MS to analyze the components of pyrolysis gas and bio-oil. The results showed that wet torrefaction could increase the specific surface area and porosity of solid products and optimize the physical and chemical properties of the surface of pyrolytic carbon. At the same time, it could reduce the oxygen content of liquid products and improve the quality of bio-oil, increase the relative content of CH4and H2in gas products, and improve the availability of pyrolysis gas. The co-pyrolysis could increase the yield of gas products and the hydrogen content of liquid products.