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Copyright of South China Fisheries Science is the property of South China Fisheries 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 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.)

坏死性小肠结肠炎 (NEC) 是一种主要发生于早产儿的严重胃肠道疾病, 其病理生理机制尚不完全清楚; 肠道未成熟、缺氧缺血、肠内喂养和微生物失调可能在诱导肠道炎症反应中起作用。近年来研究表明, 肠生态系统 的失调在新生儿 NEC 发病机制中扮演重要角色。细菌定植是 NEC 发生的前提, 其病情发展过程受母体因素、分娩 方式、喂养方法、胎龄及抗生素应用等多种因素的影响。NEC 早产儿肠道微生物群明显不同于足月正常婴儿, 早期 发现肠道菌群失调并采用相关微生态制剂治疗可能是 NEC 未来的研究方向。 [ABSTRACT FROM AUTHOR]

This paper introduced a real-time SLAM algorithm designed for mobile robots operating in environments characterized by low illumination and low texture. The algorithm leveraged the fusion of visual point-line features and IMU characteristics. It enhanced the EDlines algorithm by incorporating a leapfrog routing strategy and an adaptive threshold strategy, thereby improving the quality of line feature extraction and consequently enhancing feature tracking effectiveness. It established tight coupling constraints between visual and inertial features and employed a sliding window, along with a marginalization model, for nonlinear optimization. This enabled high-precision and real-time state estimation. Experimental results show that the proposed algorithm is superior effectiveness in online feature extraction when compared to traditional line segment extraction methods. Concurrently, the SLAM system achieves enhanced localization accuracy and robustness. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ordnance Equipment Engineering is the property of Chongqing University of 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 Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Experimental Technology & Management is the property of Experimental Technology & Management 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 Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast University 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 Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica 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 Synthetic Crystals is the property of Journal of Synthetic Crystals 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Automotive Digest is the property of Automotive Digest 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 Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences 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.)

The research progress of pollution status, pollution causes and the status of pollution evaluation and analysis of urban rivers in recent years were reviewed. At present, the phenomenon of urban river pollution is mainly categorized into exogenous and endogenous pollution. The research analyzes the impacts of two pollution sources on urban rivers. The research and application progress of urban river pollution assessment and analysis methods are summarized. The advantages and disadvantages of different evaluation and analysis methods are explored, and the main trend of pollution evaluation and analysis when multiple evaluation methods are combined is pointed out. It is suggested that future research should focus on the comprehensiveness and comprehensiveness of evaluation methods to promote the study and treatment of urban river pollution. [ABSTRACT FROM AUTHOR]

Copyright of Journal of South China Normal University (Natural Science Edition) / Huanan Shifan Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of South China Normal University (Natural Science Edition) 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 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 Forest Research is the property of Forest 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 Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry 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 Modern Food Science & Technology is the property of Editorial Office of Modern Food 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 China Mechanical Engineering is the property of Editorial Board of China Mechanical 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 the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths 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 Ordnance Equipment Engineering is the property of Chongqing University of 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 Journal of Ordnance Equipment Engineering is the property of Chongqing University of 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 Journal of Ordnance Equipment Engineering is the property of Chongqing University of 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.)

For the first time, oxidation-reduction modified cellulose (ORC) was proposed to be blended with poly(vinyl alcohol) (PVA) for the preparation of composites. Molecular dynamics simulation (MD) was used to study the miscibility of ORC with PVA. Analysis of the intermolecular interaction energy and the number of hydrogen bonds revealed that the modification enhances the interaction between ORC and PVA, which promotes miscibility between the components. When the degree of modification of ORC reached 40%, the difference in solubility parameter between ORC and PVA was 2.02 (J/cm3)1/2, reaching the miscibility condition. The miscibility of ORC with 88% and 99% alcoholised PVA was investigated according to the Flory-Huggins theory. The results showed better miscibility of PVA (88%) with ORC. Analysis of the radial distribution function of the atoms forming hydrogen bonds in the blended system revealed that the carbonyl group on vinyl acetate is more inclined to form intermolecular hydrogen bonds with ORC, while the hydroxyl group on vinyl alcohol is more inclined to form intramolecular hydrogen bonds. Therefore, more intermolecular hydrogen bonds were formed in PVA (88%)/ORC blends, resulting in better miscibility. The results can provide theoretical guidance for the preparation of ORC/PVA composites. [ABSTRACT FROM AUTHOR]

Solenopsis invicta is a kind of invasive pest that causes serious damage to local agriculture, environment, and human health. They attack mainly with venom within stingers. Those who are allergic to the venom would suffer a systemic anaphylaxis, even fatal shock, after being stinged by these ants. Many studies reveal that their venom is mainly composed by water, insoluble alkaloids and trace proteins, within which alkaloids are the main cause of burning sensation and blisters, while allergic reactions are caused by proteins or peptides. The research progress of toxic substances in the venom of Solenopsis invicta as well as the roles and functions of each component were reviewed in this paper. [ABSTRACT FROM AUTHOR]

Copyright of Steel Pipe is the property of Steel Pipe Magazine 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 Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica 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.)

One of the main uses of dual-polarization radar is hydrometeor classification. At present, the mainstream hydrometeor classification algorithm is fuzzy logic classification (FL), but this method only uses information from a range bin, which is vulnerable to noise. Based on the limitation of the fuzzy logic method, this paper employs cluster analysis and proposes an object-oriented precipitation particle classification method, which considers the distance between the distance database and different hydrometeor and the surrounding range bin category information based on fuzzy logic classification. To verify the accuracy of hydrometeor classification, the observed data from the Guangzhou S-band dual-polarization radar is utilized in this paper. The results show that the object-oriented hydrometeor classification algorithm used in this paper can effectively reduce the impact of noise on the classification results, and the classification results are consistent with the microphysical characteristics of hydrometeors. [ABSTRACT FROM AUTHOR]

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 of Tropical Meteorology (1004-4965) is the property of Guangzhou Institute of Tropical & Oceanic Meteorology, China Meteorological Administration 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 China Brewing is the property of China Brewing 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 Osteoporosis is the property of Chinese Journal of Osteoporosis 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.)

Bolting is widely used in complex equipment such as wind turbines. The working load and mechanical vibration of the equipment will cause bolt loosening, and lead to the failure of bolt connection, which will seriously affect the normal operation of the equipment. Therefore, the connection stiffness model of bolt joint surface was established by taking the connection bolts of offshore wind turbine tower barrel as the research object, and the loosening state prediction of the connection bolts of tower barrel flange was carried out. Firstly, a virtual material model was used to characterize the connection stiffness of the bolt joint surface, the influence of preload on the virtual material layer model was explored, and the parameters for the finite element simulation were provided. Then, a high precision finite element model was established by combining the force hammer experiment with the measured data. Finally, the first 10 torsional and bending natural frequencies of flange connectors were used, the square ratio of frequency change of any two modes and the relative change ratio of frequency before and after the preload change were respectively used as bolt quantitative indicators for bolt positioning and loosening prediction. The results show that with the increase of preload, the natural frequency of tower connection increases gradually, but the sensitivity of natural frequency decreases slightly. According to the statistics of the test results of bolt loosening, the identification accuracy of bolt loose positioning reaches 95.24%. The prediction accuracy of preload reduction degree of single bolt and multiple bolt is 93. 4% and 90.2% respectively. The research of bolt loosening prediction based on virtual material model has the characteristics of high precision and strong universality, which can provide an important basis for real-time monitoring of digital twin. [ABSTRACT FROM AUTHOR]

Objective To investigate the effect of Yinchenhao decoction on renal oxidative stress injury in rats with obstructive jaundice and its association with the regulation of the expression of nuclear factor erythroid 2-related factor 2（Nrf2） and nuclear translocation. Methods A total of 32 male Sprague-Dawley rats were randomly divided into sham-operation group（S group）, model group（O group）, low-dose Yinchenhao decoction group（LY group）, and high-dose Yinchenhao decoction group（HY group）, with 8 rats in each group. For the rats in the S group, the upper common bile duct was isolated without ligation, and for those in the other groups, double ligation of the middle and upper 1/3 of the common bile duct was performed to establish a model of obstructive jaundice. After 7 days, the rats in the LY group and the HY group were given Yinchenhao decoction by gavage at a dose of 6.3 and 18.9 mL/kg, respectively, while those in the S and O groups were given an equal volume of distilled water by gavage every day for 7 consecutive days, and the rats were treated on day 14. ELISA was used to measure the serum levels of total bilirubin（TBil）, direct bilirubin（DBil）, alanine aminotransferase（ALT）, gamma-glutamyl transpeptidase（GGT）, blood urea nitrogen（BUN）, and creatinine（Cr）; spectrophotometry was used to measure the activity of the oxidative stress factors superoxide dismutase（SOD） and malondialdehyde（MDA） in renal tissue; quantitative real-time PCR and Western blotting were used to measure the mRNA and protein expression levels of Nrf2, Kelch-like ECH-associated protein 1（Keap1）, and NAD（P）H quinone dehydrogenase 1（NQO1） in renal tissue; immunohistochemistry was used to measure observe the nuclear translocation of Nrf2 protein in renal tissue. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t-test was used for further pairwise comparison within groups. Results Compared with the S group, the O group had significant increases in the levels of TBil, DBil, ALT、GGT, BUN, and Cr, a significant reduction in the activity of SOD, and a significant increase in the level of MDA（all P＜0.05）. Compared with the O group, the LY group and the HY group had significant reductions in liver and renal function parameters, a significant increase in the activity of SOD, and a significant reduction in the level of MDA（all P＜0.05）. Compared with the S group, the O group had significant reductions in the mRNA and protein expression levels of Nrf2 and NQO1 in renal tissue（all P＜0.05）, and compared with the O group, the LY group and the HY group had significant increases in the mRNA and protein expression levels of Nrf2 and NQO1（all P＜0.05）, while there was no significant difference in the protein expression level of Keap1 between groups（P＞0.05）. Compared with the S group, the O group had a significant reduction in the positive rate of Nrf2 in cell nucleus in renal tissue（P＜0.05）, and compared with the O group, the LY group and the HY group had a significant increase in the positive rate of Nrf2 in cell nucleus（P＜0.05）. Conclusion Yinchenhao decoction can effectively alleviate renal injury caused by obstructive jaundice, possibly by upregulating the protein expression of Nrf2 in renal tissue and regulating the nuclear translocation of Nrf2 protein, so as to mediate the protein expression of downstream NQO1, regulate oxidative stress response caused by obstructive jaundice, and thereby alleviate renal injury in rats. Objective To investigate the effect of Yinchenhao decoction on renal oxidative stress injury in rats with obstructive jaundice and its association with the regulation of the expression of nuclear factor erythroid 2-related factor 2（Nrf2） and nuclear translocation. Methods A total of 32 male Sprague-Dawley rats were randomly divided into sham-operation group（S group）, model group（O group）, low-dose Yinchenhao decoction group（LY group）, and high-dose Yinchenhao decoction group（HY group）, with 8 rats in each group. For the rats in the S group, the upper common bile duct was isolated without ligation, and for those in the other groups, double ligation of the middle and upper 1/3 of the common bile duct was performed to establish a model of obstructive jaundice. After 7 days, the rats in the LY group and the HY group were given Yinchenhao decoction by gavage at a dose of 6.3 and 18.9 mL/kg, respectively, while those in the S and O groups were given an equal volume of distilled water by gavage every day for 7 consecutive days, and the rats were treated on day 14. ELISA was used to measure the serum levels of total bilirubin（TBil）, direct bilirubin（DBil）, alanine aminotransferase（ALT）, gamma-glutamyl transpeptidase（GGT）, blood urea nitrogen（BUN）, and creatinine（Cr）; spectrophotometry was used to measure the activity of the oxidative stress factors superoxide dismutase（SOD） and malondialdehyde（MDA） in renal tissue; quantitative real-time PCR and Western blotting were used to measure the mRNA and protein expression levels of Nrf2, Kelch-like ECH-associated protein 1（Keap1）, and NAD（P）H quinone dehydrogenase 1（NQO1） in renal tissue; immunohistochemistry was used to measure observe the nuclear translocation of Nrf2 protein in renal tissue. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t-test was used for further pairwise comparison within groups. Results Compared with the S group, the O group had significant increases in the levels of TBil, DBil, ALT、GGT, BUN, and Cr, a significant reduction in the activity of SOD, and a significant increase in the level of MDA（all P＜0.05）. Compared with the O group, the LY group and the HY group had significant reductions in liver and renal function parameters, a significant increase in the activity of SOD, and a significant reduction in the level of MDA（all P＜0.05）. Compared with the S group, the O group had significant reductions in the mRNA and protein expression levels of Nrf2 and NQO1 in renal tissue（all P＜0.05）, and compared with the O group, the LY group and the HY group had significant increases in the mRNA and protein expression levels of Nrf2 and NQO1（all P＜0.05）, while there was no significant difference in the protein expression level of Keap1 between groups（P＞0.05）. Compared with the S group, the O group had a significant reduction in the positive rate of Nrf2 in cell nucleus in renal tissue（P＜0.05）, and compared with the O group, the LY group and the HY group had a significant increase in the positive rate of Nrf2 in cell nucleus（P＜0.05）. Conclusion Yinchenhao decoction can effectively alleviate renal injury caused by obstructive jaundice, possibly by upregulating the protein expression of Nrf2 in renal tissue and regulating the nuclear translocation of Nrf2 protein, so as to mediate the protein expression of downstream NQO1, regulate oxidative stress response caused by obstructive jaundice, and thereby alleviate renal injury in rats. [ABSTRACT FROM AUTHOR]

Dynamic environment interference is an urgent problem in the field of visual simultaneous localization and mapping ( SLAM) . Moving objects in the scene will seriously affect the positioning accuracy of the system. This paper combined the line features with stronger semantic information and geometric constraints to assist the SLAM system based on traditional ORB features to solve the dynamic SLAM problem. Firstly, it used SOLOv2, an excellent achievement in the field of deep learning, as the scene segmentation network, and it could assign line feature semantic information. After object tracking and static region initialization, it used the mask pyramid to extract and classify feature points. Then, it used epipolar constraints to eliminate point and line features on dynamic objects. Finally, it combined static point and line features to complete accurate estimation of pose. The experiment on the dynamic data set of TUM shows that the pose estimation accuracy of the proposed system is 72. 20% higher than that of ORB-SLAM3 and 20. 42% higher than that of DynaSLAM. Even compared with the excellent achievements in the same field in recent years, it also has better accuracy performance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ordnance Equipment Engineering is the property of Chongqing University of 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 Modern Food Science & Technology is the property of Editorial Office of Modern Food 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 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.)

The spatial and temporal variation characteristics of vegetation water use efficiency (WUE) in Yili area of Xinjiang were analyzed to provide scientific reference and data basis for sustainable utilization of regional water resources, sustainable development of ecological environment and protection of regional ecosystem. By using MODIS net primary productivity (NPP) and MODIS evapotranspiration (ET) products from 2000 to 2019, both the inter–annual variation and spatial distribution characteristics of vegetation water use efficiency (WUE) were analyzed; vegetation WUE trend of different vegetation types and its significance were also examined. A further study was conducted by analyzing the distribution patterns and variation characteristics of vegetation WUE mean values at low, moderate, and high levels during 2000 and 2019. Finally, vegetation WUE values of different vegetation types were explored based on MODIS Land Cover product. The results are as follows. (1) Generally, vegetation WUE showed an increasing trend with an increasing rate of 13.24% in the past 20 years. An obvious uneven spatial distribution of vegetation WUE values existed among different regions, increasing from south and east to north and west. The WUE at high value area, moderate value area and low value area accounted for 53.30%, 32.06% and 1.82% of the whole region, respectively. From the temporal perspective, regions with moderate vegetation WUE values were gradually changing into that with high vegetation WUE values, while regions with low vegetation WUE values presented a stable status from both total area and distribution extent aspects. (2) Annually analysis results show 63.99% of the WUE was under an increasing trend, 23.29% in decreasing, and only 41.07% of the vegetation WUE increase area and 10.54% of the vegetation WUE decrease area passed the significance test at P< 0.05 level. Meantime, only 29.36% of the WUE increase area and 7.43% of the WUE decrease area passed the significance test at P< 0.01 level. (3) WUE values of different vegetation types showed a similar variation trend. Their annual mean values (g·mm-1·m-2) showed crops (0.80)> coniferous forest (0.74)> grassland (0.70)> broad-leaved forest (0.65)> sparse vegetation (0.18); contribution percentages of different vegetation types to WUE showed grassland (59.83%)>crops (32.55%)>coniferous forest (3.45%)> broad-leaved forest (2.43%)> sparse vegetation (0.91%). In conclusion, within study period during 2000 and 2019, vegetation WUE in Yili increased slightly. Mean annual vegetation WUE value was 0.71 g·mm-1·m-2. Spatially, the mean values in the two major river valleys were higher than that of the eastern and southern mountains regions. The vegetation WUE values of crops and grassland were relatively high, which had contributed greatly to the local ecological environmental protection as well as social and economic development. [ABSTRACT FROM AUTHOR]