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为了研究钢框架-型钢混凝土（SRC）自复位墙板结构的抗震性能，完成了钢框架-自复位SRC墙板子结构模型的低周往复加载试验，以研究其工作机理和失效机制。提出了基于宏观单元的非线性分析模型，并利用试验结果验证模型的准确性，研究结果表明该非线性分析模型能较好地模拟自复位SRC墙板的非线性行为。分别建立6层和15层钢框架-自复位SRC墙板结构的整体模型并进行增量动力时程分析（IDA）。以地面峰值加速度为地震动强度指标，以最大层间位移角为损伤指标，根据IDA结果得到不同极限状态下的易损性曲线，建立地震易损性矩阵，并对不同极限状态下结构的损伤风险进行了评估，研究表明：6层和15层钢框架-自复位SRC墙板结构在50年内的倒塌概率分别为0.138%和0.095%，远小于FEMA 750规定的1%，由此可见，钢框架-自复位SRC墙板结构抗震性能较好，并具备良好的抗地震倒塌能力。

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

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The Chinese Society of Clinical Oncology (CSCO) began to compile the guidelines for breast cancer diagnosis and treatment in 2016,and officially released them in 2017.It is updated once a year with a wide range of contents. The guidelines are combined with China's national conditions, aiming to guide the relevant medical personnel, researchers, medical and government institutions, patients and their families to do a better job in the standardized diagnosis and treatment of breast cancer. This article interpreted the main update points of CSCO 2024 guidelines for breast cancer diagnosis and treatment. [ABSTRACT FROM AUTHOR]

Copyright of Architectural Journal / Jian Zhu Xue Bao is the property of Architectural 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 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.)

In order to investigate the effects of different synthesis conditions on the micro-structures and macro-properties of MOFs, two metal-organic frameworks (MOFs) {[Cu2(L)2 · C2H3N]}n(1) and {[Cu(HL)2]}n(2) were prepared by using the copper sulfate (CuSO4·5H2O) and 6-(pyridin-3'-yl)isophthalic acid (H2L) as the building units under the different reaction conditions. Compound 1 and 2 were fully studied through structure analysis, thermogravimetric analysis (TGA) and FT-IR spectroscopy. Single crystal data reveals that compound 1 and 2 crystallize in the monoclinic crystal system with the P21/c space group. Structure analysis indicates that compounds 1 shows a three-dimensional dense packing structure based on the secondary building units dinuclear paddle wheel shaped [Cu2(COO)4] (SBUs). Structure analysis reveals that compounds 2 shows a 2D layer structure,which was further connected by the hydrogen bonds [O3—H…O4] to give a 3D network. Topological analysis for compounds 1 and 2 show that 1 can be simplified as a two connect rtl network with the point symbol of (4².610.8³),and 2 can be viewed as a unnodol connect sql network with the point symbol of (44.6²). In order to study the properties of the compounds 1 and 2 in aqueous solution, three different dyes were used to characterize the dye degradation properties of 1 and 2 using ultraviolet/visible spectroscopy (UV) at the same time. The degradation properties of compounds 1 and 2 on different dyes at the same time intervals show that compound 2 shows a certain chemical adsorption and degradation ability for malachite green in aqueous solution. [ABSTRACT FROM AUTHOR]

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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.)

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Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu 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.)

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Interval-set decision information tables extend classical decision information tables. However, few studies have focused on its heuristic reduction. To solve the problem in interval-set decision information tables, this paper proposed attribute reduction and its heuristic reduction algorithm by adopting the model positive region and corresponding dependency degree. In the interval-set rough set model, it defined the positive region and dependency degree for decision classification, and proved the granulation monotonicity. It established attribute reduction based on the dependency degree and designed a heuristic reduction algorithm. The instance analysis and the experimental results show that the proposed attribute reduction algorithm is effective. The obtained results are useful for dependency learning and feature optimization. [ABSTRACT FROM AUTHOR]

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

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The United States is actively "returning" to Greenland to counter Russia's growing military capabilities in the Arctic and China's growing economic and scientific research presence in Greenland. This move by the United States is a "double-edged sword", which has a double-sided impact on Greenland and Denmark and China, which are deeply involved in Greenland affairs. As far as Greenland is concerned, this move will help Greenland get rid of its dependence on Denmark, but it may cause it to be controlled by the United States; as far as Denmark is concerned, this move will help Denmark respond to external threats, but it may make Greenland out of Danish control; in the case of China In short, it will have a negative impact on China's investment and cooperation in Greenland in the short term, but in the long run it may promote the development of China-Greenland relations. Facing the "return" of the United States to Greenland, China should strengthen cooperation with Greenland and Denmark, carry out "track two diplomacy," and use practical actions to promote China's relations with Greenland and Denmark. [ABSTRACT FROM AUTHOR]

Copyright of Shanghai Land & Resources / Shanghai Guotu Ziyuan is the property of Editorial Board of Shanghai Land & 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 Coal Science & Technology (0253-2336) is the property of Coal 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.)

研究新冠疫情下基于微信的翻转课堂联合以病例为基础教学(CBL)在规范化培训(简 称规培)医师临床带教中的应用效果。方法 选取陕西省人民医院帕金森病门诊的规培医师作为研究对象,其 中2020年3-9月接受基于微信的翻转课堂联合CBL的规培医师24名作为研究组,2019年3-9月接受传统 教学模式教学的规培医师27名作为对照组。比较2组规培医师的自我评价(学习积极性、讲课生动性、带教满 意度)和考试结果(基础知识、临床病例分析、临床实践操作)。结果 研究组规培医师的学习积极性、讲课生动 性、带教满意度等自我评价高于对照组,差异均有统计学意义(P <0.05);研究组规培医师基础知识、临床病例 分析、临床实践操作等考试结果高于对照组,差异均有统计学意义(P <0.05)。结论 新冠疫情下基于微信的 翻转课堂联合CBL在帕金森病门诊临床带教效果较好,值得应用推广。 [ABSTRACT FROM AUTHOR]

[Objective]The purpose of this study was to study the effect of high-molecular-weight polypomus polyester (PET) non-woven fabrics with different thicknesses on the medium and severe saline-alkali land crops barely covered by drip irrigation on soil water and salt trans-port. It provides reference for methods of soil salinity control. [Method] Bare fields of saline-alkali crops were covered with polyester non-woven fabrics of different thicknesses and the effects of various treatments on soil moisture, salt, and Na+ content were compared and analyzed. [Result] (i) Compared with non-covering measures, the moisture content of soil under polyester and non-woven fabrics was increased by 11.2 % and 12.54 % under medium and moderate saline-alkali conditions, and PET3 had the best water retention effect; (ii) Each treatment could reduce soil salinity and Nat content to varying degrees. The effect of 0 —20 cm soil layer was significant. The desalination effect of each treatment was; PETS > PET2 > PETI > CK. The desalination rate of PET3 in severe saline-alkali land was 57.04 % which was the highest among all treatments. (iii) The desalination rate of non-woven fabrics covering heavy saline-alkali land was higher than that of moderate saline-alkali land. [Conclusion] Non-woven fabric cover can reduce water evaporation, reduce water potential gradient between top soil and deep soil, and inhibit soil salt return. The desalination effect of non-woven fabric is related to the background salt content of the soil. The higher the desalination effect, the more significant; the greater the weight of the non-woven fabric, the water retention performance will increase. The soil moisture and salt movement under the cover are closely related. [ABSTRACT FROM AUTHOR]

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.)

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In order to assist ophthalmologists in the diagnosis of fundus diseases, this paper presented a retinal vessel segmentation method based on PST and multi-scale Gaussian filter. Firstly, it enhanced the green channel of color fundus image.Then, it used Gaussian filters with different scales to reduce the noise of retinal vessels with different diameters after preconditioning, and combined with the Gaussian filters, it used the edge detection algorithm of the PST to obtain preliminary retinal vascular segmentation map. Finally, it integrated the initial retinal vessel segmentation maps and denoised the result based on morphology to obtain the final retinal vessel segmentation map. The experiments on DRIVE retinal image database show that the average accuracy is 93%, the average sensitivity is 77%, and the average specificity is 95%. The experimental results verify the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Xinyang Normal University Natural Science Edition is the property of Journal of Xinyang Normal 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.)

Since the launch of the pilot project for the paid use of rural residential land in China in 2015, various localities have explored the concept of collection, collection standards, collection methods and fee management for the paid use of homesteads and have achieved preliminary results. However, the historical inertia of long-term unpaid use has made it difficult to pilot the reform of the paid use homestead system. After conducting field investigations of pilot areas such as Lu County in Sichuan Province, this paper summarizes the difficult problems in the current reform of the paid use homestead system. These include the fuzzy collection of the paid use fee for the homestead, the lack of funds supervision, and the verification of the housing area. For various reasons, the use period of the homestead is not clear, and the use of paid fees due to demographic changes is difficult. Therefore, future reforms should focus on the collection criteria, basis, management supervision mechanism and policy dynamic adjustment mechanism of paid user fees. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Applied Sciences - Electronics & Information Engineering is the property of Shanghai Scientific & Technical Publishers 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.)

Although the failure properties of rock/rock-like specimens with flaws under uniaxial compression have been studied in many cases，those properties of specimens with X-type flaws under uniaxial tension have not been researched yet.In this research the crack coalescence and strength properties were studied with rock-like material specimens containing two overlapped X-type flaws under uniaxial tension tests.The testing results were compared with uniaxial compression results of specimens containing corresponding flaws.The study results show that the failure and coalescence modes of specimens with two overlapped X-type flaws under uniaxial tension tests are different from those with specimens under uniaxial compression tests.There is no crack coalescence at the rock bridge areas of specimens containing two overlapped X-type flaws under uniaxial tension tests.The position of the secondary flaw influences the strength of specimens containing two overlapped X-type flaws under uniaxial tension tests.The specimen with a second flaw vertical to the maximum tension stress has the lowest tension strength among specimens with two overlapped X-type flaws under uniaxial tension tests.The tension strength of the specimen with a second flaw parallel to the maximum tension stress is the highest one among the specimens with two overlapped X-type flaws under uniaxial tension tests. [ABSTRACT FROM AUTHOR]

The existing supporting materials and technology are difficult to support the deep soft rock with large deformation. In order to overcome this support problem, in this study, a new type of high pre-stressed anchor cable and its supporting technology are developed based on theoretical analysis and laboratory tests. Initial pre-stress applied on the new type of anchor cable can reach 70-100 kN, and the elongation of the rod body can reach 10%-12%, which can effectively prevent the rapid deformation of the surrounding rock after excavation and maintain the integrity and stability of the surrounding rock. The new type of anchor cable has the advantages of low cost, high strength, and not easy to loose, etc. According to the deformation characteristics and mechanism of the surrounding rock in typical deep soft rock roadways, the combined control techniques with the core of new high pre-stressed anchor cable and grouting bolt are proposed. The new high pre-stressed anchor cable, metal mesh, concrete spray layer are used during primary support. Full-sectional grouting is adopted in a later period, which improves the support strength fundamentally by combining with interior and exterior. The research results show that this new technology can effectively improve the bolt stress, reduce the deformation rate of the surrounding rock and shorten the deformation time of the surrounding rock based on field tests. The finally deformation of the surrounding rock accounts for only 30% of the original supporting scheme, and the anchor cable force increases by nearly 4.7 times on average. This study achieves a good supporting effect and has an important application value. [ABSTRACT FROM AUTHOR]