Search

介电特性是决定雷达波在物质中传播速度的重要参数. 嫦娥四号测月雷达提供的高垂向分辨率次表层雷达剖面信息有助于加深对月球次表层物质介电特性的理解与认识. 全波形反演法充分利用雷达波场的运动学和动力学信息, 根据雷达波模拟结果与真实数据的差异计算更新参数, 迭代初始介电模型实现对次表层介电剖面的反演. 本文结合嫦娥四号测月雷达数据与时域有限差分方法下均质模型和随机等效介质模型的雷达回波特性, 确定随机等效介质模型能够更好地模拟嫦娥四号着陆区次表层物质的介电特性. 全波形方法反演的介电模型与真实模型在大部分区域的相对介电常数误差小于0.2, 为反演月壤厚度及构建次表层温度模型提供了重要的数据支撑.

Based on panel data from 11 provinces (cities) in the Yangtze River Economic Belt from 2011 to 2021, an evaluation index system for digital transformation and high-quality agricultural development was constructed using the entropy method. A bidirectional fixed effect model was used to empirically test the impact of digital transformation on high-quality agricultural development in the Yangtze River Economic Belt, as well as regional heterogeneity and indicator heterogeneity. The research results indicate that digital transformation can drive the high-quality development of agriculture in the Yangtze River Economic Belt, which has passed the robustness test;the impact of digital transformation on the high-quality development of agriculture in different regions of the Yangtze River Economic Belt is heterogeneous. The promotion of high-quality agricultural development in downstream areas is the strongest, followed by the middle reaches, and weaker in upstream areas. After testing the heterogeneity of indicators, it was found that digital transformation has the strongest promoting effect on the sharing of high-quality agricultural development in the Yangtze River Economic Belt, followed by innovation, coordination, and green, and has no significant impact on openness. Based on this, countermeasures and suggestions are proposed to strengthen the foundation engineering of digital technology, cultivate talents for agricultural digital application, strengthen the coordinated development of digital regions, and promote high-quality agricultural development. [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 China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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 Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy 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 Urban Mass Transit is the property of Urban Mass Transit 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.)

Objective To explore the systematic construction and application of accurate follow-up ( model based on behavior change wheel model (BCW) in peritoneal dialysis (PD) patient management. Methods Under the guidance of BCW theory, the accurate follow-up model of regional groups of the PD patients was established, and questionnaires were conducted before and after the follow-up with coping efficacy questionnaire(CEQ), social support rating scale (SSRS) and client satisfaction questionnaire-8(CSQ-8). Results After 1,3 and 6 months follow-up, the coping efficacy scores were significantly different from those before implementation(P<0.05). After 1.3 and 6 months of follow-up, the social support score was significantly different from that before implementation (P<0.05). The satisfaction of the patients after six months follow-up was higher than that before implementation, and the difference was statistically significant (P<0.05). Conclusion The regional group accurate follow-up model of peritoneal dialysis patients based on BCW theory is suitable for local peritoneal dialysis patients, and the follow-up effect is ideal, so it can be promoted and used in the local region. [ABSTRACT FROM AUTHOR]

Self-drilling anchor is a new type of anchor integrating drilling, grouting and anchoring functions, which can overcome the problems of easy collapse holes and low construction efficiency of pebble gravel formation, and has the advantages of high construction efficiency and good comprehensive economic benefits, and has broad engineering application prospects. Based on the combination of on-site pull-out test and ABAQUS numerical simulation at a gravel site in Luoyang, the anchoring characteristics and load transfer laws of self-drilling anchor in gravel stratum were discussed. The results show that the self-drilling anchor has excellent anchoring performance in gravel stratum, which can meet the engineering requirements. The average bonding strength at the anchorage body-soil interface gradually decreases with the increase of anchor length. The axial stress, shear stress and anchorage body shaft stress are distributed exponentially along the anchoring depth. With the increase of anchor depth, the shear stress of anchorage body first rises rapidly and then gradually decreases, and the peak shear stress increases with the increase of load, but the peak point position remains basically unchanges. With the increase of drawing load, the radial influence range of the anchor on the surrounding soil stress increases, while the depth direction influence range remains around a certain value. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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 Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She 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 Cotton Textile Technology is the property of Cotton Textile Technology 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.)

BACKGROUND: As a unique structure of the cervical spine, the occurrence, development and progression of the uncovertebral joint directly affect the stability and range of motion of the cervical spine, and are also closely related to the pathogenesis of cervical spondylosis. A thorough understanding of the developmental characteristics of the uncovertebral joint is of great significance for the pathogenesis, diagnosis, and treatment of cervical spondylosis. OBJECTIVE: By using imaging and three-dimensional reconstruction technology to measure and observe the cervical uncinate process-related angle in a large sample of different age groups, the aim is to reveal the characteristics of its changes with age and vertebral growth, as well as its relationship with cervical spine stability. METHODS: Using a retrospective research design, we collected 1 447 cases of raw CT imaging data that meet the study requirements for complete cervical spine segments. The raw data were imported into Mimics 21.0 software in DICOM format for post-processing and measurement of angle of uncinate process and sagittal angle of uncinate process. The data were grouped based on gender, age, and side. RESULTS AND CONCLUSION: (1) With the increase of vertebral sequence, the angle of uncinate process increased in a V-shaped shape, and the lowest peak was at C5. The overall population showed a sharp peak with the increase of age, and the peak value mostly occurred in the age range of 30-39 years. (2) The sagittal angle of the uncinate process increased like a fishhook with the increase of the vertebral sequence, and the overall angle of the uncinate process increased with age, and the peak value mostly occurred in the age range of 20-29 years. The uncinate process angle and sagittal angle showed only partial significant differences between sides and genders (P < 0.05). (3) It is concluded that the angle of the uncinate process increased with the increase of vertebral sequence in a V-shaped manner. The sagittal angle of the uncinate process increases like a fish hook with increasing vertebral order, while the two angles generally peak with increasing age. The angle of the uncinate process is about 131°, which may be closely related to the stability of the cervical spine, while the sagittal angle of the uncinate process is about 14°, and its function may play a certain role in limiting the excessive rotation of the cervical spine. [ABSTRACT FROM AUTHOR]

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 Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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.)

【Objective】It is to establish a rapid, sensitive and specific SYBR Green I quantitative PCR method for the detection of sugarcane striate virus（SStrV）.【Method】A specific amplification primer was designed from the conserved sequence of the SStrV genome sequence, the recombinant plasmid pMD19-T-SStrV-qN containing SStrV gene was constructed as a positive plasmid standard. Using it as template, the SStrV fluorescence quantitative PCR assay was established. And the sensitivity, specificity, stability, and subsequently of this method were tested, then the SStrV loads in different tissue sites of sugarcane were detected.【Result】The recombinant plasmid containing SStrV genome sequence was diluted into a standard at a 10-fold ratio, and they were used as a template for real-time PCR, the standard curve y = -3.337 x + 38.197 was obtained, and the correlation coefficient r² = 0.999 was obtained, indicating that the Cq value was linearly related to the logarithm of the copy number of the standard concentration. With this established real-time PCR, the least detection limit was 13 copies of the recombinant plasmid/μL, which was 100 times more sensitive than ordinary PCR. The method specifically detected SStrV with high specificity, and the coefficient of variation within and between groups was n 0.13%-0.94%, indicating that the method was of good repeatability. The load of SStrV was significantly different among different tissue sites of the sugarcane, and the load of SStrV was the highest in +4 leaves, which was significantly different from other tissue sites.【Conclusion】The SYBR Green I quantitative PCR method is established to provide an efficient quantitative detection method for the diagnosis of SStrV, and it is determined that +4 leaves are the best sampling site for the detection of SStrV in sugarcane. [ABSTRACT FROM AUTHOR]

The preparation, thermal stability and shielding properties of boron carbide/lead/polyethylene composites were studied. Boron carbide/lead/polyethylene composites with mass fraction of 3%, 4%, 5% and 6% boron carbide and different thicknesses were prepared, and the related properties of the composites were evaluated. The results show that when different samples are at the same thickness, adding 6% boron carbide composite has better high-temperature basic properties. Thermogravimetric test shows that the mass loss of the sample is low and its basic properties are effectively maintained. In addition, the composite with 6% boron carbide has the best application effect and better particle shielding performance. The results provide a reliable basis for the preparation and performance evaluation of boron carbide lead polyethylene composites. [ABSTRACT FROM AUTHOR]

Copyright of Low-Carbon Chemistry & Chemical Engineering is the property of Low-Carbon Chemistry & Chemical 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.)

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 China Sciencepaper is the property of China Sciencepaper 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 Educational Technology is the property of Editorial Board of Modern Educational Technology, Tsinghua 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 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.)

Copyright of Acta Edulis Fungi is the property of Acta Edulis Fungi 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.)

The evaluation of reservoir damage is important to reservoir protection and oil and gas yield improvement. Reservoirs in the Bozhong sag of the Bohai Bay Basin are naturally fractured tight reservoirs, coring in these reservoirs is difficult and many different methods of evaluating the reservoir damage are in use, resulting in difficulties in implementing effective reservoir protection measures. To deal with this problem, combined with the actual situation of reservoirs, design and manufacture 3D printed fractured cores with transparent and visible interior and reservoir damage evaluation devices. In evaluating reservoir damage by different drillin fluids used in Bozhong, the flow-rate damage rate instead of the permeability damage rate is used. Experimental results show that the drill-in fluid EZFLOW, which is presently in field application, has stable rheology and good filtration property. Compared with 3% bentonite drilling fluid, the EZFLOW drill-in fluid imposes smaller damage to the reservoirs, the rates of reservoir damage imposed by the EZFLOW drill-in fluid are between 11.7% and 26.2%, which are weak reservoir damage. The rate of damage to the cores is decreasing with increase in the opening degrees of the cores; for different fractured cores, the longer the cores and the wider the fractures, the higher the damage rate. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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 Signalling & Communication Engineering is the property of Railway Signalling & Communication 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 Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals 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 Journal of Prevention & Treatment For Stomatological Diseases is the property of Journal of Prevention & Treatment For Stomatological Diseases 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 Tourism Tribune / Lvyou Xuekan is the property of Tourism Institute of Beijing Union 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 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.)

距骨外侧突骨折（FLPT）在所有骨折类型中占比较低，容易漏诊或误诊。FLPT损伤机制多样，足部背屈、 内翻、外翻、外旋、轴向撞击等都可导致。FLPT 常用的分型方法包括 Hawkins 分型、McCrory-Bladin 分型、Boack 分 型、Tinner-Sommer分型以及最新的张英泽分型。临床上对FLPT的诊断首选X线检查，但由于足部副骨和骨赘较为 常见，在X线片上与其他骨折鉴别困难，因此常常需要进一步通过CT检查进行判断。FLPT的主要治疗方式包括石 膏外固定、闭合或切开复位内固定、骨块切除和关节融合等。大部分患者FLPT经治疗后预后良好，并且随着关节镜 技术日益成熟，患者预后优良率明显提升。 [ABSTRACT FROM AUTHOR]

Objective To analyze the risk factors of persistent infection of high-risk human papillomavirus after radical hysterectomy for early cervical cancer. Methods A total of 159 early-stage cervical cancer patients who underwent radical hysterectomy or laparoscopic radical hysterectomy at the Kunming Maternal and Child Health Hospital between January 2021 and November 2023 were selected. Based on the postoperative 1a follow-up visit for HR-HPV persistent infection status, they were divided into two groups: HR-HPV positive group （n = 41） and HR-HPV negative group （ n = 118） . The general data, vaginal microbiota status，surgical approach, postoperative pathology results， etc.， of the two groups of patients were analyzed to study the risk factors associated with postoperative HR-HPV persistence in early-stage cervical cancer patients. Results Univariate and multivariate regression analysis showed that the HR-HPV persistent positive group and HR-HPV negative group, the risk factors of HR-HPV persistent positivity in patients with early cervical cancer after operation were menopause, late stage of operation, vaginal microecological disorder/sub-disorder （P < 0.05），but laparoscopic minimal invasive surgery was not. OR of vaginal microecological abnormality was 12.574，OR of menopause was 3.510. Conclusion Menopausal and vaginal microecological disorders are important risk factors for HR-HPV clearance in patients with radical hysterectomy for early cervical cancer. [ABSTRACT FROM AUTHOR]

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials 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 Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy 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 Petroleum Geology & Oilfield Development in Daqing is the property of Editorial Department of Petroleum Geology & Oilfield Development in Daqing 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 Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 Water Conservancy & Electric Power Technology & Application 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.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery 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.)

Copyright of Oilfield Chemistry is the property of Sichuan University, Oilfield Chemistry 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 Industry is the property of Natural Gas Industry Journal Agency 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 Electric Drive is the property of Electric Drive 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 Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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.)

Copyright of Ecological Science is the property of Ecological Science 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 China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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.)