The standards of obstetrics and gynecology core outcome sets: A scoping review

Shi Jiyuan,Gao Ya,Wu Shuang,Niu MingMing,Chen Yamin,Yan Meili,Song Ziwei,Feng Hui,Zhang Junhua,Tian Jinhui 한국한의학연구원 2022 Integrative Medicine Research Vol.11 No.1

Background: Core outcome sets (COSs) are the minimum outcomes which should be measured and reported by researchers investigating a specific condition. The definition of standards of COSs vary across different health-related areas. This investigated the characteristics of COSs regarding obstetrics and gynecology (OG) and examined the reports and designs of standards of OG COSs. Methods: A comprehensive search was conduced on the COMET database on December 20, 2019 to identify systematic reviews on COSs. Two reviewers independently evaluated whether the reported OG COS met the reporting requirements as stipulated in the Core Outcome Set-STAndards for Reporting (COS-STAR) statement checklist and the minimum design recommendations as outlined in the Core Outcome Set-STAndards for Development (COS-STAD) checklist. Results: Forty-four OG COSs related to 26 topics were identified. None of them met all the 25 standards of COS-STAR statement which representing 18 items considered essential for transparent and complete reporting list for all COS studies (range: 6.0-24.0, median: 14.0). The compliance rates to 16 standards of methods and result sections ranged from 27.3%–68.2%. Total COS-STAR compliance items for OG COSs with the prior protocol was significantly higher than without prior protocol (MD = 3.846, 95% CI: 0.835–6.858, P = 0.012). None of the OG COSs met all the 12 criteria in the COS-STAD minimum standards (range: 3.0-11.0, median: 5.0). The compliance rates for all three standards of stakeholders involved and all four standards of the consensus process were lower than 60%. Conclusions: Methodological and reporting standards of OG COSs should be improved. Background: Core outcome sets (COSs) are the minimum outcomes which should be measured and reported by researchers investigating a specific condition. The definition of standards of COSs vary across different health-related areas. This investigated the characteristics of COSs regarding obstetrics and gynecology (OG) and examined the reports and designs of standards of OG COSs. Methods: A comprehensive search was conduced on the COMET database on December 20, 2019 to identify systematic reviews on COSs. Two reviewers independently evaluated whether the reported OG COS met the reporting requirements as stipulated in the Core Outcome Set-STAndards for Reporting (COS-STAR) statement checklist and the minimum design recommendations as outlined in the Core Outcome Set-STAndards for Development (COS-STAD) checklist. Results: Forty-four OG COSs related to 26 topics were identified. None of them met all the 25 standards of COS-STAR statement which representing 18 items considered essential for transparent and complete reporting list for all COS studies (range: 6.0-24.0, median: 14.0). The compliance rates to 16 standards of methods and result sections ranged from 27.3%–68.2%. Total COS-STAR compliance items for OG COSs with the prior protocol was significantly higher than without prior protocol (MD = 3.846, 95% CI: 0.835–6.858, P = 0.012). None of the OG COSs met all the 12 criteria in the COS-STAD minimum standards (range: 3.0-11.0, median: 5.0). The compliance rates for all three standards of stakeholders involved and all four standards of the consensus process were lower than 60%. Conclusions: Methodological and reporting standards of OG COSs should be improved.

3D Analysis on Surrounding Soil Stability of Shaft Boring Machine Based on Plastic Limit Equilibrium Theory

Chao Li,Tao Li,Zhongqi Shi,Jinhui Li,Guoye Jing 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.11

Shaft boring machine (SBM) plays a significant role in mechanized construction of deep and large shafts. However, surrounding soil instability of SBM pose great threats to the shaft construction. Therefore, it is necessary to analyse the soil stability underlying SBM’s gripper. On the basis of the first SBM (MSJ5.8/1.6D) that independently developed in China, the interaction between the SBM’s gripper and surrounding soil is investigated. According to the failure mode of the shaft obtained by numerical simulation, the geometry of the failure surfaces is first derived, and the stresses distribution on the failure surfaces are clearly presented. Then, the ultimate bearing capacity formula of the surrounding soil underlying SBM’s gripper is derived based on plastic limit equilibrium theory with Mohr-Coulomb criterion. The change rules of bearing capacity factors and the influence rules of basic parameters in this formula are obtained. Finally, the theoretical values in typical soils are compared with those from the numerical simulation to illustrate the rationality of the formula. The results of this investigation not only provide an advanced method for evaluating the surrounding soil stability of SBM in shaft construction, but also provide guidelines for the design and construction risk control of SBM.

DISTRIBUTION CHARACTERISTICS OF NUTRIENTS IN CHINESE BOHAI SEA

Li Zhengyan,Gao Huiwang,Bai Jie,Shi Jinhui 한국환경보건학회 2001 한국환경보건학회 학술대회 자료집 Vol.2001 No.-

Quantitative Analysis Method for Subsynchronous Oscillation Power Propagation Characteristics of Wind Power Connected to Grid

Sun Xuebo,Chen Wei,Wei Zhanhong,Shi Jinhui,Pei Xiping 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.5

The subsynchronous oscillation power caused by large-scale wind power connection to the grid and the large-scale propagation of oscillation energy in the grid leads to system power fluctuations and may result in grid cascading accidents. This paper proposes a quantitative analysis method for the propagation and distribution characteristics of the oscillation power. First, the manifestation and formation mechanism of subsynchronous oscillation power is studied based on instantaneous power theory. Second, two quantitative indicators, namely the oscillating power node propagation intensity and branch transfer coefficient, are proposed to characterize the oscillating power propagation characteristics. Analysis of the oscillating power propagation characteristics and their influencing factors shows that the frequency of the oscillating power is the frequency of the system power frequency minus that of the oscillating current. The two quantitative indicators provide an effective method for locating the critical nodes and identifying the propagation path of the oscillating power propagation. Finally, simulations are conducted to verify the accuracy of the theoretical analysis and demonstrate the validity of the proposed quantitative analysis method.

Efficacy and safety of herbal medicine (Lianhuaqingwen) for treating COVID-19: A systematic review and meta-analysis

Ming Liu,Ya Gao,Yuan Yuan,Kelu Yang,Shuzhen Shi,Jinhui Tian,Junhua Zhang 한국한의학연구원 2021 Integrative Medicine Research Vol.10 No.1

Background: Lianhuaqingwen (LH) has been proven effective for influenza. However, the promotion of LH for the treatment of patients with COVID-19 remains controversial. Therefore, our study aimed to assess the efficacy and safety of Lianhuaqingwen (LH) in treating patients with COVID-19 by a systematic review and meta-analysis. Methods: We conducted the literature search using six electronic databases from December 1, 2019, to June 2, 2020. Cochrane Risk of Bias tool was used to assess the quality of randomized controlled trials. Newcastle-Ottawa Scale was used to assess the quality of case control studies. Agency for Healthcare Research and Quality checklist was used to assess the quality of case series. All analyses were conducted by RevMan 5.3. For outcomes that could not be meta-analyzed were performed a descriptive analysis. Results: Eight studies with 924 patients were included. Three studies were RCTs, three were case control studies, and two were case series. The quality of the included studies was poor. Compared with patients treated by conventional treatment, patients treated by LH combined with conventional treatment have a higher overall effective rate (RR = 1.16, 95%CIs: 1.04∼1.30, P = 0.01) and CT recovery rate (RR=1.21, 95%CIs: 1.02∼1.43, P = 0.03). Patients of LH groups have a lower incidence of diarrhea (5.6% vs.13.4%), and have statistically significant (P = 0.026). But the rate of abnormal liver function in the combined medication group is higher than that in the single LH group. Conclusion: LH combined with conventional treatment seems to be more effective for patients with mild or ordinary COVID-19.

Bioinspired Synthesis of Chiral 3,4-Dihydropyranones via S-to-O Acyl-Transfer Reactions

Jin, Hui,Lee, Juyeol,Shi, Hu,Lee, Jin Yong,Yoo, Eun Jeong,Song, Choong Eui,Ryu, Do Hyun American Chemical Society 2018 ORGANIC LETTERS Vol.20 No.6

<P>A bioinspired synthesis of chiral 3,4-dihydropyranones via S-to-O acyl-transfer reactions is described. Asymmetric Michael addition-lactonization reactions of β,γ-unsaturated α-keto esters with thioesters are catalyzed by proline-derived urea, providing 3,4-dihydropyranones and spiro-3,4-dihydrocoumarin-fused 3′,4′-dihydropyranones in high yield (up to 94%) with excellent stereoselectivities (up to >20:1 dr, 99% <I>ee</I>) under catalyst loadings as low as 1 mol %.</P> [FIG OMISSION]</BR>