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为了研究大高宽比矩形钢管混凝土柱的压弯性能，对大高宽比钢管混凝土短柱进行偏压试验并结合有限元模拟补充了4组试件进行对比，包括不同偏心率、高宽比、钢管壁厚度、截面尺寸情况下柱性能的对比分析。最后参考常用的4本国内外规范进行柱承载力计算，对比并判断现有规范是否适用。结果表明：试件破坏模式均为长边鼓曲，当荷载小于极限承载力的80%时，横截面高度上的应变分布服从平截面假定；随着偏心率增大，柱延性提升，在偏心率超过0.205后，柱延性开始下降；随着壁厚增加，柱延性提升，在壁厚达到8 mm后，柱延性开始下降；随着高宽比提升，柱延性降低；随着截面尺寸增大，在壁厚不变的情况下，柱延性降低，在壁厚等比例增大时，柱延性变化不大；随着高宽比、截面尺寸、钢管壁厚度的增大，柱承载力提升；随着偏心率升高，柱承载力降低；参考规范JGJ 138—2016对大高宽比钢管混凝土柱偏压承载力的计算更为准确。

介绍了一种ＳＤＨ 专用集成电路ＭＸＨ０１５５ － ２ ，给出了内部模块图和构成并说明了各模块的功能，最后介绍了ＭＸＨ０１５５ － ２ 在ＳＤＨ 网络中的典型应用和应用框图。

本文介绍了几种应用于ＳＤＨ的技术，其中包括并行帧同步技术和并行扰码技术。采用这两项技术可以在低速电路上完成以前必须在高速电路上完成的功能，从而提高电路的稳定性，降低功耗。同时还介绍了一种匀滑ＡＵ－４的２４ｂｉｔ指针抖动的数字化预处理方法。另外，文章介绍了通过利用这些技术开发研制的ＳＴＭ－１复接专用集成电路ＴＳＯＨ－９９００－１，并给出了其原理框图。

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

Objective To explore the risk factors and pregnancy outcomes of placenta previa combined with penetrating placenta implantation (PP). Methods A total of 369 pregnant women with placenta previa combined with PP admitted to the hospital for delivery via cesarean section from June 2019 to December 2022 were selected and divided into the unperforated group (297 cases) and the perforated group (72 cases) according to the clinical grading of placenta implantation. The pregnancy outcomes of pregnant women in the two groups were compared, and the risk factors for the occurrence of placenta previa combined with PP were analyzed using logistic regression models. Results The percentage of pregnant women in the penetrated group with placement of abdominal aortic balloon, uterine tamponade (balloon/gauze), and hysterectomy, as well as the rates of intraoperative hemorrhage, post-partum complications, and adverse neonatal outcomes were significantly higher than those in the non-penetrated group, and the differences were all statistically significant (P＜0. 05). Induced abortion clearance was a risk factor for PP combined with placenta previa (OR=2. 421, 95%CI 1. 107-5. 296, P=0. 027). The number of previous cesarean sections ≥1 was an independent risk factor for PP combined with placenta previa (OR=3. 314, 95%CI 1. 525-7. 203, P=0. 002). Conclusion The rate of adverse outcomes in pregnant women with placenta previa combined with PP was high despite more aggressive perioperative measures to prevent bleeding. The number of previous cesarean sections ≥1 is an independent risk factor for PP with placenta previa. [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.)

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Microbial induced biomineralization can effectively immobilize heavy metal ions, which is considered to be an important process for the environmental remediation of heavy metal pollution, and has important practical significance for the ecological remediation of heavy metal pollution. In this study, a strain GS 2 resistant to Pb() and Cd(J)was isolated from the soil of a lead zinc mining area in northwest Guizhou Province. It was identified as Bacillus paramycoides. Based on morphological characteristics and 16S rRNA. The removal rates of 250 mg/L Pb(If) and 5 mg/L Cd(JJ) were 99. 54% and 69. 04%, respectively, and the removal rates of heavy metal Pb (J) and Cd()(both 25 mg/L) were 99. 73% and 71. 46%, respectively. The results of SEM EDS, FTIR, and XRD showed that the strain induced mineralization of Pb(n)and Cd(n)to Cm. 5 Pb, (OH)2 (PO4)$, C&2. iPb/.gCb (PO4)&, Pb$ (PO4) 2, Pb5 (PO4)g OH, Pb9 (PO4) e, Pbio (PO4) e (OH)2 and Ca0. e, Cd0. $$ COs through the functional groups of hydroxyl, carboxyl, amide and phosphate groups on the surface. Strain GS 2 has great removal and mineralization ability and has certain application potential for bio remediation of Pb(H)and Cd(]J)pollution in the environments. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chongqing University of Technology (Natural Science) 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.)

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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 Journal of Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) 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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As an important branch of pile foundation, rock-socketed pile has been widely used in the field of foundation engineering, and its vertical bearing capacity is generally considered to be composed of two parts: pile side friction resistance and pile end resistance. In this paper, a total of 62 groups of rock-socketed pile vertical ultimate bearing capacity comparison test data using traditional static load method and self-balancing method in 5 actual projects were collected. After normalizing the test data, Bayesian optimization was used to calculate the statistical parameters of the model factors obeying the log-normal distribution. The appropriate reliability index solution method was selected to calculate the reliability index of the vertical bearing capacity of rock-socketed piles corresponding to different self-balancing conversion coefficients. The ratio of live load effect to dead load effect, safety factor and statistical parameters of load effect were discussed. The influence of factors on reliability indicators. The appropriate target reliability of the vertical bearing capacity of rock-socketed piles is determined according to various industry norms and the most unfavorable principle, and the recommended value of the self-balancing conversion coefficient corresponding to the target reliability is given. [ABSTRACT FROM AUTHOR]

Under the background of carbonate rocks in karst areas, the life activities of microorganisms in the environment are closely related to metal ions. Microbial-Induced Carbonate Precipitation (MICP) can effectively immobilize heavy metal ions, which is helpful in remediating heavy metal pollution in the environment. In this study, a urease-producing and Pb (Ⅱ)-resistant mineralization strain WH15,which was identified as Klebsiella grimontii by 16S rDNA, was isolated from the surrounding soil of a lead-zinc mining area in northwestern Guizhou province. The mineralization characteristics of Pb (Ⅱ) when calcium source was added, and the mineralization products were characterized by Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), Fourier Transform Infrared Spectroscopy (FT-IR) and X-Ray Diffraction (XRD). The results showed that the tolerance of strain WH15 to Pb (Ⅱ) was as high as 2 000 mg/L. When the concentration of CaCl2 was 100 mg/L, the mineralization rate of WH15 to 2 000 mg/L Pb (Ⅱ) increased from 82% to 99.7%.SEM-EDS,FTIR and XRD analysis indicated that the strain adsorbed and immobilized Pb (Ⅱ) around the bacteria through the hydroxyl, alkyl, amide, carboxyl and carbonic acid groups on the surface, and the mineral precipitation before and after calcium addition changed from lead phosphate to CaCO3 and PbCO3,the main components were calcite, vaterite and galena. The above results indicate that Klebsiella grimontii WH15 has certain application potential for bioremediation of Pb (Ⅱ) pollution in the environment [ABSTRACT FROM AUTHOR]

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.)

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Objective To design, synthesize and measure antifungal activities of galloyl piperazine derivatives. Methods Trimethoxyl gallic acid was used as starting material, reacted with piperazine in the presence of PyBOP/DIEA to afford the intermediates. The target compounds were obtained through the reaction with corresponding acids after deprotection gave. The antifungal activities of the target compounds were evaluated by FLC-resistant Candida albican isolated according to the CLSI recommended method. Results 11 target compounds were synthesized and six of them showed more potent antifungal activities than gallic acid. Conclusion Galloyl piperazine derivatives could enhance antifungal activities. Galloyl moiety was an important pharmacophore, which could improve antifungal activities with the introduction of cinnamic acid and 2,3-dichlorobenzoic acid. [ABSTRACT FROM AUTHOR]

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.)