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为研究碳纤维复材约束普通强度椭圆钢管混凝土（CFRP-ECFST）短柱轴压性能，开展了8个不同椭圆截面比、不同复材厚度的短柱试件的静力轴压试验，考察了试件的破坏模式及其影响因素。参考已有碳纤维复材-高强钢管约束混凝土应力-应变设计模型，建立了CFRP-ECFST短柱轴压设计模型，并利用试验结果对该模型的准确性进行验证。结果表明：CFRP-ECFST短柱破坏模式均为中部碳纤维断裂；碳纤维断裂应变随椭圆截面比的增大而降低；碳纤维复材的约束效应随复材管用量增加而增强，但随椭圆截面比的增大而降低；由设计模型计算的轴向荷载-应变曲线与试验曲线吻合良好，表明设计模型能较为准确地估计CFRP-ECFST短柱的轴压承载力，可为该类构件的工程设计提供参考。

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

Copyright of Journal of International Reproductive Health/Family Planning is the property of Editorial Board of the Journal of International Reproductive Health/Family Planning 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 International Obstetrics & Gynecology is the property of TianJin Medical Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Preterm birth is the main cause of neonatal death and short-term and long-term complications, of which 70%~ 80% are spontaneous preterm birth (SPB), and the other 20%~30% are iatrogenic preterm birth. The rate of preterm birth has been increasing in recent years and efforts were made to improve the prognosis of preterm birth. In August 2021, the American College of Obstetricians and Gynecologists (ACOG) issued the practice bulletin No. 234 "Prediction and Prevention of Spontaneous Preterm Birth", covering the increased preterm birth rate and its associated risk factors, measures to reduce the risk of preterm birth by intervening modifiable risk factors, strategies to assess the risk of preterm birth individually and prevent preterm birth. This paper interpreted the main points of its recommendation in order to provide evidence-based basis for clinical practice related to preterm delivery. [ABSTRACT FROM AUTHOR]

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

Preterm birth，occurring in 5% to 18% birth of births worldwide, is the main cause of neonatal death and other adverse outcomes. Many surviving preterm birth need to face lifelong disability, including learning disabilities, vision and hearing problems. Among them, 70% to 80% are spontaneous preterm births (SPB), and the remaining 20% to 30% are therapeutic preterm delivery. Progesterone is an important substance to maintain pregnancy. More and more evidences show that vaginal use of progesterone can prevent the occurrence of SPB. In 2020, the society of Obstetricians and Gynaecologists of Canada, SOGC) summarized the latest clinical research evidence of progesterone in the prevention of SPB, and provided clinical guidance and recommendations for the mechanism of action, the appropriate population, unsuitable population, dosage, timing and side effects of progesterone in the prevention of SPB. At the same time, the guideline compared progesterone therapy with cervical cerclage, vaginal pessary and bed rest to prevent SPB. This paper interpreted the main points of its recommendation in order to provide reference for medical workers in China. [ABSTRACT FROM AUTHOR]

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

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

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

Gestational diabetes mellitus (GDM) is defined as an endocrine metabolic disease with glycometabolism disorder in varied degrees which firstly occur or is identified during pregnancy. It is a serious but common threat to the health of mother and fetal. Recent research shows that increased insulin resistance (IR) caused by abnormal adipose cytokines secretion might be one of the pathogenesis of GDM. Vaspin (visceral adipose tissue-derived serine protease inhibitor), as a newly discovered adipose cytokines with insulin-sensitizing and improving insulin resistance effects, probably plays an important role in the development of type 2 diabetes and GDM. Recently, there are some researches between vaspin and GDM, but the results are different. This review is aimed to summarize the change of vaspin during pregnancy and the relationship between vaspin and GDM. [ABSTRACT FROM AUTHOR]

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

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