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Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Laboratory Animal & Comparative Medicine is the property of Laboratory Animal & Comparative Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Agrometeorology is the property of Editorial Board of Chinese Journal of Agrometeorology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Chemistry is the property of Chinese Journal of Applied Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Agrometeorology is the property of Editorial Board of Chinese Journal of Agrometeorology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Groundwater resources had an important function of safeguarding resources and maintained ecological security. As global warming and the intensity of human activities increased, the amount of groundwater resources in the plain area of Xinjiang was on a decreasing trend, further aggravaed the risk of groundwater drought. Revealing the spatiotemporal variation's characteristics of groundwater drought in the plain area of Xinjiang and its responsed to meteorological drought was great of significance for regional economic sustainable development and ecosystem security. This article estimated the changes in groundwater storage in the plain area of Xinjiang from 2003 to 2022 based on GRACE and GLDAS data; On this basis, standardized the changes in groundwater storage and constructed a groundwater drought index; analyzed the spatiotemporal variation's characteristics of groundwater drought in the plain area of Xinjiang. Finally, used the maximum correlation method to analyze the responsive relationship between groundwater drought and meteorological drought. (1) The change of groundwater storage in the plain area of Xinjiang showed a decreasing trend, with a decreasing rate of 0.60 cm-a-1, and the areas with more obvious decreases were mainly concentrated in the pre-mountain plain of the Tianshan Mountains region, while the rising areas were mainly concentrated in the pre-mountain plain of the northern foothills of the Kunlun Mountains and the pre-mountain plain of the southern foothills of the Altay Mountains. (2) Groundwater drought index monitored that there were 13 and 8 months of groundwater drought events in the plain area of Xinjiang from April 2014 to April 2015, and from May 2022 to December 2022, respectively. Overall, the frequency of groundwater drought in the plain area of Xinjiang was 0.21, the average intensity of groundwater drought was 1.0-2.0, and the average duration of groundwater drought was 4-28 months; Among them, the areas with an average drought duration of 4-10 months, 11-16 months, 17-22 months, and 23-28 months was 80.68%, 9.54%, 4.15%, and 5.63%, respectively. (3) The average responsive time of groundwater drought to meteorological drought in the plain area of Xinjiang was 18 months; the proportion of the area with responsive time of 1 -3 months, 4-6 months, 7-9 months, 10-12 months, and 13-24 months was 11.00%, 2.13%, 2.75%, 2.00%, and 82.12%, respectively. Among them, the responsive time in the pre- mountain plain of the northern foothills of the Tianshan Mountains showed an increasing trend in the last 20 years, with the responsive time increasing from 1-3 months to 18-24 months, while the responsive time in some areas of the pre-mountain plain of the northern foothills of the Kunlun Mountains slowed down from 9-12 months to 1-3 months first, and then prolonged to 12-24 months. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Shanghai Jiaotong University (Medical Science) is the property of Journal of Shanghai Jiaotong University (Medical Science) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Rehabilitation Medicine is the property of China Association of Rehabilitation Medicine, China-Japan Friendship Hospital and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Land Geography is the property of Chinese Academy of Sciences, Xinjiang Institute of Ecology & Geography and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to improve the accuracy of trajectory tracking control of wheeled mobile robot (WMR), a backstepping optimized double sliding mode control strategy was proposed. Initially, based on the kinematics and dynamics model of WMR, the kinematic backstepping sliding mode controller and dynamic backstepping integral sliding mode controller are designed. The stability of the designed controllers is proved by Lyapunov theory. Then particle swarm optimization (PSO) algorithm is used to optimize the controller parameters. Finally, considering the external disturbance and system input saturation, Matlab/Simulink is used to verify the control strategy. The results show that the proposed control strategy not only ensures the robustness and real-time performance of the system, but also improves the control accuracy of the system. [ABSTRACT FROM AUTHOR]

In response to the issue of existing muscle force calculation methods lacking consideration for the muscle synergy and muscle force relationships during motions, a biomechanical calculation method based on the muscle force relationships and muscle synergy during walking is proposed. This method incorporates the muscle synergy and the relative force of muscles into inverse dynamics calculation based on the quadratic optimization. The proposed method is applied for the calculation of forces of major lower-extremity muscles of human walking. Muscle forces are obtained based on a musculoskeletal model, which effectively reflects the human motion mechanisms and muscle synergy during walking. This method provides significance for exploring the laws of human movement, biomechanical principles, and humanoid robot motion control. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Food Industry is the property of Science & Technology of Food Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Ophthalmology & Otorhinolaryngology is the property of Eye & ENT Hospital of Fudan University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the application value of artificial intelligence (AI) based retinal microvascular analysis in the diagnosis of diabetes retinopathy (DR), diabetes nephropathy (DN) and other diabetes complications. Methods From January to December 2022, 305 subjects from the Health Medicine Department and Endocrine Department of the Eastern Theater Command General Hospital of PLA were divided into healthy control group (n = 119), diabetes without DR group (n = 100), and diabetes with DR group (n = 86) according to the condition of diabetes and its complications. The group of diabetes with DR was further divided into the group without DN (n = 50) and the group with DN (n = 36). Clinical data, laboratory test indicators, and fundus photography results of all the subjects were collected. Independent sample t-test, Kruskal Wallis H-test, and logistic regression analysis were used for data analysis. Results There were statistically significant differences in FBG, 2hPBG, HbA1c, central retinal artery equivalent (CRAE), and retinal arteriovenous ratio (AVR) among the three groups (all P < 0.05). In patients with diabetes complicated with DR, there were statistically significant differences in the history of diabetes, total number of bleeding, total area of exudation, maximum area of exudation and total number of exudation between non-DN group and DN group (all P < 0.05). There was correlation between retinal microvascular indicators and diabetic retinopathy. When the total area of retinal hemorrhage, total area of exudation, and maximum area of exudation increased, the risk of diabetic retinopathy increased. Conclusion AI-based retinal microvascular analysis has value in providing prompt indication and assisting with the diagnosis of complications in diabetic patients. [ABSTRACT FROM AUTHOR]

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The experiment was to investigate the effects of bacterial-enzyme complex on the production performance, egg quality, egg composition, and nutrient apparent metabolic rate in wheat-based laying hens. A total of 360 Jinghong laying hens were randomly divided into three groups with 10 replicates in each group and 12 laying hens in each replicate. The control group was fed with corn-soybean meal diet. The wheat group used 10% wheat to replace the same proportion of corn in the control group diet. The bacterial-enzyme complex group was supplemented with 0.02% bacterial-enzyme complex on the basis of wheat group diet. The pre-test period was three days, and the formal test period was 28 days. The results showed that there was no significant difference in production performance, egg quality, and egg composition among the control group, wheat group, and bacterial-enzyme complex group (P>0.05). The lutein content of egg yolk in wheat group decreased gradually with the increase of experiment time. On the 22nd, 25th, and 28th day, the lutein content of egg yolk in wheat group was significantly lower than that in control group (P<0.05), and the lutein content of egg yolk in bacterial-enzyme complex group was significantly higher than that in wheat group (P<0.05). The apparent metabolic rates of dry matter, crude protein, calcium, and phosphorus in wheat group were lower than those in control group (P>0.05), while the apparent metabolic rates of crude protein and phosphorus in bacterial-enzyme complex group laying hens were significantly higher than those in the control group and wheat group (P<0.05). The study indicates that using 10% wheat instead of corn can not affect egg quality and egg composition, but can reduce yolk color and lutein content. Bacterial-enzyme complex can increase yolk lutein content of wheat group, improve yolk color and improve nutrient apparent metabolic rate of laying hens. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Practical Medicine / Shiyong Yixue Zazhi is the property of Journal of Practical Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] To overcome the bottleneck of instrument and equipment management in universities, we designed the concept and mode of instrument and equipment management, strengthened system integration and data interaction with information technology, promoted the implementation of a "one network, one door, one time" intelligent management service system for instrument and equipment, and built an intelligent closed-loop management system for the entire life cycle of university instruments and equipment, including real-time information sharing, upstream and downstream collaborative reconciliation, and integrated control. Building a new ecosystem of management services, this article proposes countermeasures and suggestions to overcome management bottlenecks through investigation, in-depth analysis, and combined with the innovative management practices of the instruments and equipment of Shandong University. [Method] Based on the current actual management requirements of the instruments and equipment, universities innovate management models and mechanisms, optimize management processes, innovate service models, overcome the limitations of traditional value-based accounting theory, and provide a theoretical basis for financial transformation management and accounting transformation data services according to the event-based accounting theory. Concurrently, based on the existing instrument and equipment and financial management systems, combined with the professional software development service providers in the industry, we developed an interface using the HTTPS protocol and the WebService technology, which can connect the instrument and equipment management and financial management information systems in management, service, data, and other aspects. We built a comprehensive business chain in the "Internet Plus" mode, a smart finance-based instrument and equipment asset management platform for resource coordination. [Results] A new model of closed-loop management was established by studying the current situation and existing problems of college instrument and equipment management based on smart finance. Internet Plus, big data, and other technologies were used to achieve intelligent management in the entire life cycle of the instruments and equipment, reforming and innovating the management scheme and path, strengthening the internal control of college instruments and equipment in an all-round and multilevel manner, and creating an entire life cycle integration of college instrument and equipment based on smart finance perspective management. Herein, we deeply integrate final financial accounts with asset allocation, use, management, evaluation, and predecision-making; forming an interface between the instrument and equipment management information and financial management systems of the school; achieving integration in data, services, management, and other aspects; and constructing a new service system for instrument and equipment budget, asset, financial management, and other aspects. Concurrently, a conceptual framework for the intelligent instrument and equipment financial management system was constructed, which promotes innovation in the construction, theory, and methodology of intelligent instrument and equipment management systems and provides ideas for developing and practicing instrument and equipment management in an intelligent environment. [Conclusions] The intelligent management of instruments and equipment in universities is a complex system engineering that requires continuous summarization of experiences in practical work, improvement and innovation combined with national and school development plans, strengthening of information empowering asset modernization governance capabilities and levels, improvement of instrument and equipment use and service efficiencies, providing conducive conditions for technological innovation and facilitating high-level scientific and technological self-reliance, boosting the high-quality development of the "Double First Class" construction. [ABSTRACT FROM AUTHOR]

In order to establish a rapid method to identify the absorption and activation ability of iron in different peanuts, the iron deficiency cultivars Nongda 818, Luhua 11, Shanhua 11, and the iron sensitive cultivars Luhua 12, ICG6848, and Baisha 1016 were employd in iron deficiency nutrient solution instead of soil. The yellowing time of new leaves in iron deficiency environment was recorded. After the new leaves of all peanut seedlings turned yellow, the iron supply was resumed. The seedlings were treated with 20 µmol/L FeSO4 for 2 d and 4 d, 25 µmol/L FeSO4 for 2 d and 3 d, and 30 µmol/L FeSO4 for 1 d, 2 d and 4 d, the increase of chlorophyll value (ΔSPAD), dry weight and iron uptake were measured to identify the iron uptake capacity. The iron activation ability of peanut was evaluated at 25 µmol/L Fe2(SO4)3 for 2 d and 4 d, 30 µmol/L Fe2(SO4)3 for 2 and 3 d, and 35 µmol/L Fe2(SO4)3 for 1 day, 2 d and 4 d. Results showed that the seedlings of all peanuts showed yellowing on the 10th day of iron deficiency treatment. Then, 25 µmol/L FeSO4 was used to iron supply for 2 days, which led to in iron sensitive cultivars. When treated with 30 µmol/L Fe2(SO4)3 for 2 days, the increase of SPAD value and iron activation per plant were also significantly different between the deficient tolerant and sensitive cultivars. Therefore, considerting peanut iron absorption/activation ability, the increase of seedling SPAD, iron uptake per plant and/or activation per plant could be used as indicators after iron supply (25 µmol/L FeSO4 or 30 µmol/L Fe2(SO4)3 for 2 days) when seedlings have been etiolated. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mycosystema is the property of Mycosystema Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of University Chemistry is the property of Peking University, College of Chemistry & Molecular Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Tea (Camellia sinensis L.) is one of the most important and traditional economic crops widely cultivated in the subtropical regions of China, which are usually developed from forestland. Soil enzyme activity is an important indicator of soil fertility and nutrient transformation. The purpose of this study is to investigate the seasonal dynamic characteristics of soil properties and enzyme activities of different planting patterns in Wuyishan city, and to provide theoretical basis for reasonable evaluation of soil ecological effects of organic tea cultivation. In this paper, three different planting patterns (forestland, conventional and organic tea gardens) were selected as the research objects. Soil samples were collected in May, August, November and February from 2021 to 2022. The soil properties and enzyme activities (urease, nitrate reductase, polyphenol oxidase, catalase, invertase and acid phosphatase) were determined in different seasons, and the dynamic changes with seasons were also investigated. The results show that: comparing with the forestland, the contents of soil ammonium nitrogen, total phosphorus, available phosphorus and available potassium increased significantly in the conventional tea garden, while the total potassium and pH decreased significantly. Compared with the conventional tea garden, the soil organic matter and total nitrogen contents increased significantly in the organic tea garden. The soil total phosphorus, available phosphorus, total potassium and available potassium contents decreased significantly. The soil pH also increased, and the proportion of soil nutrients was more coordinated. The effects of planting pattern and season and their interactions on urease and peroxidase activities were significant. Compared with the forestland, the soil urease, polyphenol oxidase, catalase and acid phosphatase activities decreased by 12.05% to 63.55% in the conventional tea garden, while urease activities significantly increased by 324.95% in the organic tea garden, and the soil nitrate reductase activities were not changed by planting mode. In general, the soil urease, polyphenol oxidase, invertase and acid phosphatase activities were significantly higher in summer and autumn (May and August) than those in winter and spring (November and February). The highest soil nitrate reductase and catalase activities were found in spring (February). The results of permutational multivariate analysis of variance show that the effect of planting pattern on the overall soil physical and chemical properties was much greater than that of seasonal changes. Redundancy analysis shows that soil environmental factors explained 77.03% of the variation in soil enzyme activity, and the soil organic matter, total nitrogen, ammonium nitrogen, total phosphorus, soil available phosphorus, total potassium, available potassium and pH were the main driving factors of soil enzymes. In summary, the conversion of forestland into tea gardens has a significant impact on soil properties and enzyme activities. Conventional planting leads to the accumulation of available phosphorus and potassium in tea garden soil and the decrease of soil enzyme activity, while organic planting improves soil enzyme activity and enhances soil carbon and nitrogen nutrient supply capacity, and thus is beneficial for maintaining a sustainable ecosystem in tea garden soil. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Cancer Biotherapy is the property of Editorial Office of Chinese Journal of Cancer Biotherapy and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] Drought is an abiotic stress detrimentally affecting crop production in many countries. Understanding its occurrence in a region is crucial to improving its water and agricultural management. In this paper, we analyzed the spatiotemporal variation in drought from 1961-2022 in Huaibei located in central China. [Method] The analysis is based on meteorological data measured from 1961-2022 from 21 weather stations across the region. Monthly, seasonal, and annual standardized precipitation evapotranspiration index (SPEI) in each station were calculated, from which we calculated the spatiotemporal variation in drought across the region. [Result] ① Monthly, seasonal and annual SPEI in Huaibei had been in decrease from 1961-2022. ② The frequency and duration of persistent droughts had both been in increase from 1961-2022, with Huaibei station showing the highest drought frequency at 0.73 times/year, and Sixian station showing the longest drought duration at 4.61 months. ③ Annual change in droughts in spring and autumn did not show any identifiable trend. Frequency and intensity of droughts in winter were the highest, reaching 34.43% and 21.86%, respectively. Spatially, spring drought was more frequent in the center, east, and southwest of the region; summer drought was less frequent in the southeast of the region; autumn drought was more frequent in the east and north of the region; winter drought was more frequent in the west, northeast and southeast of the region. ④ On average, annual change in drought was increasing at a rate of 0.01/10 a, but not at significant levels. Drought areas had been in increase from 1961 to 2022 at a rate of 1.4%/10 a. The north has a high tendency for occurrence of droughts, while drought intensity tends to be high in the west and southeast of the region. Drought is more frequent in the northeast and southwest. [Conclusion] Overall, there are noticeable trends in spatiotemporal variation in drought in the Huaibei region, with drought frequency and intensity varying between different regions and showing an increase trend from 1961 to 2022. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Food Industry is the property of Science & Technology of Food Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Agrometeorology is the property of Editorial Board of Chinese Journal of Agrometeorology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)