Search

Determining a reasonable irrigation schedule for crops and a combination of irrigation technology elements is the basis for scientific management of agricultural water resources, which can effectively alleviate the contradiction of water scarcity and guarantee regional food security. In this study, the AquaCrop model was calibrated and validated based on the summer maize field experiments in Yangling (2022) and Wugong (2017), Shaanxi Province to optimize the irrigation schedule, and the irrigation schedule of summer maize under typical hydrological years (wet year, normal year and dry year) and the required irrigation depth were determined in the study area; the WinSRFR software was calibrated and validated using the Yangling (2022) irrigation experiment; and the soil infiltration parameters of F4, F7, and F5 were selected to be representative of high (k = 98.437 mm/hα, α = 0.824), moderate (k = 85.396 mm/hα, α = 0.659), and low (k = 55.416 mm/hα, α = 0.617) infiltration capacities, and 1.0‰, 2.0‰ and 3.5‰ were used as representative values of typical bottom slopes in the study area, respectively to optimize values furrow irrigation technology elements (discharge and cutoff time) under different soil infiltration capacities and bottom slope by using WinSRFR. Finally, evaluation the yield increasing ability of the optimized irrigation schedule and the irrigation technology elements for summer maize by using AquaCrop model, respectively. The results indicated that the AquaCrop model can accurately simulated the maize growth, the coefficient of determination and Nash-Sutcliffe efficiency coefficient between simulated and measured values of canopy cover, aboveground biomass and soil water content ranged from 0.86 to 0.99 and 0.56 to 0.97, respectively, the root mean square error are 3.9 to 10.1%, 1.2 to 1.4 t/hm2 and 11.7 to 13.6 mm, respectively; The mean absolute value of the relative error between the simulated and measured values of yield were 1.85% and 7.47%, respectively; Summer maize in the study area must be irrigated once during wet year (during the grain-filling stage) and normal year (during the jointing stage) and twice during dry year (during the jointing and grain-filling stages), with the water quantity used in each irrigation event being 55 mm; the optimised k and α values were 55.416 to 98.437 mm/hα and 0.35 to 0.858, respectively, and the mean n value was 0.056; the optimal discharge and cutoff times were 2.2 to 3.3 L/s and 35 to 16 min, respectively, these values are suitable for meeting the requirement of the comprehensive irrigation performance indicator (Ci ) being ≥ 85%. Based on the irrigation schedules of optimization and the combination of irrigation technology elements of optimization for summer maize in 2022, the yield of maize simulated by AquaCrop model is 7.819 t/hm² ; compared with rain fed (5.972 t/hm² ), current condition (7.424 t/hm² ) and irrigation schedule of optimization (7.659 t/hm² ), summer maize yield increased by 1.847, 0.395 and 0.160 t/hm², respectively; and the percentage of summer maize yield increase by 30.9%, 5.3% and 2.1%, respectively, and saved irrigation water 59 mm. Therefore, the optimization of irrigation system and irrigation factor combination can effectively improve crop yield and save irrigation water; and it can be concluded that although irrigation is only used as a supplement to crop water requirements in semiarid and semihumid, it is important because it has substantive implications on maize yield. The research results can provide theoretical basis for furrow irrigation scheme design of the research region and technology support. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays 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 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 Technology of Water Treatment is the property of Technology of Water Treatment 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 Agro-Environment Science is the property of Journal of Agro-Environment Science 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 Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Nanjing Medical University: Natural Sciences is the property of Journal of Nanjing Medicial University (NMU) Medical Publications Center 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 Coatings & Protection / Tuceng yu Fanghu is the property of Coating & Protection 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 Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control 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 Railway Standard Design is the property of Railway Standard Design 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 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 Journal of Data Acquisition & Processing / Shu Ju Cai Ji Yu Chu Li is the property of Editorial Department of Journal of Nanjing University of Aeronautics & Astronautics 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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.)

Floats are the primary buoyancy component of plastic fish cages in offshore aquaculture. They can increase fish cage stress and deformation under the action of sea currents, and the rise of the float's surface liquid level can cause waves on the fish cage walkway. Although plastic fish cages are a recent development in aquaculture, little research has been conducted on the arrangement of floats. Therefore, studying the resistance performance of floats is significant for safe offshore aquaculture production. This article first studies the resistance of single and double floats through on-site measurement methods. Then, based on viscous flow theory, numerical simulations are carried out to simulate the resistance and waveforms of single and double floats under different flow velocities. The simulation results are compared with the on-site measurement results to verify the accuracy of the numerical simulation. Using the same numerical simulation method as above, numerical simulations are carried out for square and diamond two typical float arrangement forms, to analyze liquid level and resistance under different flow velocities. The results show that the numerical model agrees with the on-site measurement results, with an error of 9. 5%. Three aspects are used to analyze the advantages and disadvantages of square and diamond arrangements. (1) Liquid level rise: When the flow velocity is the same, the total liquid level rise of the diamond-shaped floats arrangement is less than that of the square arrangement. (2) Flow field distribution in the middle of two floats: The flow field between the two floats of square arrangement is more chaotic than that of diamond arrangement. (3) Average resistance: When the flow velocity is greater than 1. 5 m/ s, the resistance of diamond arrangement is 29% less than that of square arrangement. The results of the on-site measurement of the small boat towing test are compared with the results of the numerical simulation output. The resistance and waveforms agree with the test results, proving that the numerical simulation method used in this article is accurate and reliable and can provide technical support for subsequent numerical studies of floats. Analyzing the liquid level situation and liquid level cloud images of the two arrangements shows that the diamond arrangement has more stable liquid level changes and better air gap performance than the square arrangement, so it is more suitable for complex offshore environments. The diamond arrangement can provide a better working environment for offshore aquaculture. By sorting out and analyzing the results of numerical simulation, it is found that the average resistance of square arrangement and diamond arrangement is less than that of individual floats. Further comparing average resistance shows that diamond arrangement has less average resistance than square arrangement, so it is more suitable for complex offshore conditions. Floats are the primary buoyancy components of plastic fishing rafts used in offshore aquaculture. Under the influence of sea currents, the resistance generated by floats can result in increased force and deformation of the fishing raft. Additionally, the elevation of the liquid level on the float's surface can induce waves on the raft platform. Therefore, studying the resistance performance of floats is crucial for ensuring the safety of offshore aquaculture production. The resistance performance of both single and double floats was investigated through practical measurements at sea. Numerical simulations based on viscous flow theory were employed to analyze the resistance and waveform of single and double floats at various flow rates. The accuracy of the numerical simulations was validated by comparing the results with actual sea measurements. Furthermore, numerical simulations were conducted to assess the placement of two typical floats in square and diamond configurations. Liquid surface heights and resistance at different flow rates were analyzed. The findings indicate that numerical simulations align well with actual sea measurements, with an error rate of less than 9. 5%. The diamond-shaped float configuration corresponds to an elevation in the liquid surface, creating a more stable flow field between the two floats. This results in a smaller average resistance, with values below 29% in flow velocities exceeding 1. 5 m/ s. Consequently, it is recommended that this placement configuration be adopted for production operations. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Northeastern University (Natural Science) is the property of Dongbei Daxue Xuebao 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 Fishery Modernization is the property of Fishery Modernization 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 Fishery Modernization is the property of Fishery Modernization 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 Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation 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 Refrigeration is the property of Journal of Refrigeration 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 Clinical Neurosurgery / Linchuang Shenjingwaike Zazhi is the property of Editorial Board of Journal of Clinical Neurosurgery 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 Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) 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 Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery 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 Zhejiang Electric Power is the property of Zhejiang Electric Power 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 Fishery Modernization is the property of Fishery Modernization 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 on Communication / Tongxin Xuebao is the property of Journal on Communications 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 Tobacco Science & Technology is the property of Tobacco Science & Technology 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 Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources 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 Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources 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 Electronic Communication & Computer Science is the property of Omniscient Pte. Ltd. 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 investigate the effects of anlotinib on proliferation and apoptosis of human glioma cells (T98G cells) through nuclear transcription factor-κB (NF-κB) signaling pathway. Methods T98G cells were cultured in vitro and randomly divided into the control group, 5 µmol/L anlotinib group, 10 µmol/L anlotinib group, 20 µmol/L anlotinib group, positive drug group, and inhibitor group. Cells in the control group were not intervened, cells in the 5, 10, and 20 µmol/L anlotinib group were treated with 5, 10 and 20 µmol/L anlotinib, respectively, and cells in the positive drug group were treated with 50 mg/L 5-fluorouracil; in the inhibitor group, 10 µmol/L anlotinib +5 µmol/L NF-κB pathway inhibitor BAY 11-7082 were added for intervention. Cell viability was measured by CCK-8, cell proliferation rate was measured by 5-acetylidene-2 'deoxyuracil riboside method, and apoptosis rate was measured by Hoechst33258 staining. The expression levels of cell cycle proteins D1 (CyclinD1), Caspase-3, NF-κB p65 and phosphorylated (p-) NF-κB p65 were detected by Western blotting. Results Compared with the control group, there was no significant difference in cell viability in the 5 µmol/L anlotinib group (P>0. 05), while the cell viability in the 10, 20 µmol/L anlotinib groups and positive drug group was lower (all P<0. 05). Compared with the control group, the cell proliferation rates, and the expression levels of CyclinD1 and p-NF-κB p65 protein were lower, while the apoptosis rates and the expression levels of Caspase-3 protein were higher in each anlotinib group and positive drug group (all P<0. 05). Compared with the positive drug group, the cell proliferation rate, the expression levels of CyclinD1 and P-NF-κB p65 protein in the 10 µmol/L anrotinib group were higher (all P<0. 05), while the apoptosis rate and the expression of Caspase-3 protein were lower (both P< 0. 05). There was no significant difference between 20 µmol/L anlotinib group and positive drug group (P>0. 05). Compared with the 10 µmol/L anrotinib group, the changes of all indexes in the inhibitor group were more significant (all P< 0. 05). Conclusion Anlotinib may inhibit proliferation and promote apoptosis of human glioma cells by inhibiting NFκB pathway signaling. [ABSTRACT FROM AUTHOR]

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)

Extracranial segmental carotid atherosclerotic disease is the most common type of cerebrovascular disease, and surgical treatment is an important means to reduce disability and mortality of patients. The Neurosurgery Branch of Tianjin Medical Association led the organization of Beijing-Tianjin-Hebei experts to develop this consensus by combining the clinical practice in China in recent years and relevant evidence-based medical evidence at home and abroad. The consensus summarizes the screening of the risk group of extracranial segmental carotid atherosclerotic disease, risk factor control, surgical treatment options, and perioperative management, aiming to provide evidence-based normative guidance for the clinical treatment of carotid atherosclerotic disease in China. [ABSTRACT FROM AUTHOR]