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BACKGROUND: The gluteus medius not only abducts the hip joint, but also plays an important role in limiting the external movement of the femoral head. At present, there is a lack of research on the correlation between gluteus medius status and non-traumatic femoral head necrosis. OBJECTIVE: To investigate the relationship between the gluteus medius width ratio and the medial space ratio of the hip joint and the progression of nontraumatic femoral head necrosis, and to explore the effect of gluteus medius atrophy on the surface and necrotic zone stress of the femoral head necrosis through finite element analysis. METHODS: Retrospective analysis of unilateral non-traumatic femoral head necrosis patients admitted to Third Affiliated Hospital of Guangzhou University of Chinese Medicine was performed. All patients were followed up for an average of more than 2 years. They were divided into a collapsed group and a noncollapsed group based on whether there was collapse of the femoral head during the follow-up. Medial space ratio, gluteus medius width ratio, Sharp angle, gluteus medius length ratio, and gluteus medius activation angle were measured and calculated. The differences in these indicators were compared between the two groups. At the first visit and follow-up at 3, 6, 12, and 24 months, the medial space ratio and gluteus medius width ratio were measured and calculated to explore the changes of these two indicators in the course of non-traumatic femoral head necrosis. In addition, using three-dimensional finite element analysis, a Japanese Investigation Committee classification C1 type femoral head necrosis model was constructed based on CT data. At the same time, based on MRI data, a model of the gluteus medius muscle was constructed and divided into a gluteus medius muscle atrophy group (gluteus medius width ratio: 74%- 76%) and a gluteus medius muscle normal group (gluteus medius width ratio: 94%-96%). Each group constructed 10 models, with 6 degrees of freedom of the distal femur constrained to zero. 600 N pressures were applied along the Z-axis to the upper surface of the sacrum. The stress distribution, maximum stress values on the surface and necrotic area of the femoral head, and the maximum displacement of the necrotic area were compared between two groups of models. RESULTS AND CONCLUSION: (1) A total of 153 patients (67 males and 86 females) with 153 hips were included in this study. (2) At the 24-hour follow-up, the medial space ratio of the collapsed group was significantly higher than that of the non-collapsed group (P < 0.05). The gluteus medius width ratio of the collapsed group was significantly lower than that of the non-collapsed group (P < 0.05). There was no statistically significant difference in Sharp angle, gluteus medius activation angle, and gluteus medius length ratio between the two groups (P > 0.05). (3) Since the follow-up time exceeded 3 months, the gluteus medius width ratio of the collapsed group was lower than that of the non-collapsed group (P < 0.05). Since the follow-up time exceeded 12 months, the medial space ratio of the collapsed group was higher than that of the non-collapsed group (P < 0.05). (4) Pearson correlation analysis showed a significant positive correlation between follow-up time and medial space ratio in the collapsed group (P < 0.05), and a significant negative correlation between follow-up time and gluteus medius width ratio (P < 0.05). The regression coefficient of gluteus medius width ratio was larger than that of medial space ratio. (5) The group with middle gluteal muscle atrophy showed significant stress concentration on the surface of the femoral head, and the stress zone was significantly located on the outside. The maximum stress on the surface of the femoral head in the group with middle gluteal muscle atrophy was significantly greater than that in the group with normal middle gluteal muscle (P < 0.05). There was significant stress concentration in the necrotic area of the middle gluteal muscle atrophy group, and the maximum stress was located at the edge of the necrotic area. The maximum stress and maximum displacement in the necrotic area of the middle gluteal muscle atrophy group were significantly greater than those of the normal group (P < 0.05). (6) It is indicated that gluteus medius width ratio is an effective indicator for evaluating changes in gluteal muscle atrophy. In the progression of non-traumatic femoral head necrosis, atrophy of the gluteus medius muscle first occurs, followed by widening of the medial hip joint space. The mechanical mechanism may be that the atrophy of the gluteus medius muscle affects the stability of the hip joint, leading to external displacement of the femoral head, and increasing stress and displacement on the surface and necrotic area of the femoral head. [ABSTRACT FROM AUTHOR]

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Copyright of Engineering Management & Technology Discussion 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.)

Objective: To investigate the predictive value of joint use of fetal head circumference, fetal abdominal circumference and angle of progression (AOP) for the difficulty of operative vaginal delivery (forceps and vaccum). Methods: This prospective observational study was carried out in Department of Obstetrics of the People′s Hospital of Guangxi Zhuang Autonomous Region from May 2017 to July 2022. A total of 64 nulliparous women with singleton term pregnancies who required instrumentation to expedite vaginal delivery during the second stage of labor were included. Clinical data of pregnant women were collected after admission to the hospital. Fetal head circumference and fetal abdominal circumference were measured. Before performing operative vaginal delivery, AOP at rest and that during uterine contraction were measured by transperineal ultrasound (AOP1: mean of AOPs at rest, AOP2: mean of AOPs during uterine contraction). According to the outcomes of operative vaginal delivery, a case was included into "difficult or failed group" (Group A) when one or more of the following situations occurred: three or more tractions needed; successful operative vaginal delivery requiring sequential instruments (change vacuum to forceps); failed operative vaginal delivery; cesarean delivery due to a subjective impression of a difficult or failed traction; birth injury and the third- or the fourth-degree perineal tear. The rest cases were included into "successful and easy group" (Group B). Fetal head circumference, fetal abdominal circumference, AOP1 and AOP2 were used to establish four different predictive models by employing multivariable logistic regression. Receiver operator characteristic (ROC) curve was used to evaluate the discrimination of four models and the model with the largest area under ROC curve (AUC) was considered as the best one. Hosmer-Lemeshow test assessed the calibration of the optimal model. The optimal one was internally validated by using Bootstrap replicated sampling (1 000 times) method. Results: Statistically significant differences were revealed with regard to fetal head station by vaginal digital examination, duration of the last traction, initial direction of pulling in the last traction, fetal abdominal circumference, AOP1, AOP2, umbilical cord artery pH and rate of neonatal asphyxia (all P＜0.05). A predictive model basing on the combination of fetal head circumference, fetal abdominal circumference, AOP1 and AOP2 showed the largest AUC (AUC=0.917, 95%CI: 0.821-0.972, Z=11.676, P＜0.001). The Hosmer-Lemeshow test showed that χ² =5.873, P= 0.661. Both of discrimination and calibration were good. The model showed good consistency in the internal validation. Conclusions: The simple model based on the combination of fetal head circumference, fetal abdominal circumference, AOP1 and AOP2 showed a predictive value for the difficulty of operative vaginal delivery and provided some basis for clinical decision-making. [ABSTRACT FROM AUTHOR]

Copyright of Engineering Management & Technology Discussion 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 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.)

Based on the analysis of the tunnel TBM construction process and technology, using the three-dimensional geological modeling technology and engineering simulation technology, a construction cycle network simulation model was established, which could achieve the prediction and visual analysis of TBM tunnel construction process. Taking the DXL tunnel project in Tibet as the research object, coupled with the three-dimensional geological model of the DXL tunnel, an optimized analysis of the TBM construction schedule of the DXL tunnel was performed through simulation calculations. The relationship between the completion probability and the construction time was fitted, and the expected completion probability was determined. The construction process was visualized and suggestions to guarantee the construction progress were proposed. [ABSTRACT FROM AUTHOR]

Delivery is a process in which the fetus is descending with the contraction in the maternal birth canal. In addition to monitoring the fetal heart rate, doctors and midwives need to estimate the position, the station, and cervical dilatation through vaginal examination, if necessary, assist the mother to give birth. However, frequent vaginal examinations will not only bring a poor delivery experience to the mother, but also increase the risk of uterine infection. The accuracy of the vaginal examination depends on the experience of the examiner to a large extent. If the assessment is wrong, it may affect the final outcome. In recent years, more and more evidences shows that the accuracy, repeatability and maternal compliance of ultrasound are higher than vaginal examination in managing labor. Dozens of ultrasound parameters have been proposed, which have shown good performance in judging the fetal position, station, rotation and predicting the outcome of delivery. This review summarized recent literatures, in order to objectively analyze the advantages, disadvantages, and future development of ultrasound in labor monitoring. [ABSTRACT FROM AUTHOR]

Endometriosis (EMs) is a common gynecologic disorder with an estimated incidence of 10% -15% among women of reproductive age. While in itself a benign lesion, EMs shares several characteristics with invasive cancer and has been shown to undergo malignant transformation. It has been associated with an increased risk of epithelial ovarian carcinoma (EOC). Recent research focused on pelvic microenvironment found that iron overload plays an important role in the initiation and development of EMs. Higher levels of iron, which is probably released after lysis of erythrocytes or retrograde menstruation, has been found in the peritoneal fluid of patients with EMs. Free iron, which is a strong prooxidant, not only disturbs the balance of redox reaction causing oxidative stress damage, but also verwhelms peritoneal protection of macrophage. Iron overload is also implicated in activation of NF-κB signaling pathway, giving rise to the production of numerous inflammatory factors. Moreover, iron metabolism may interact with and modulate estrogen, involved in the malignant transition of EMs. Here we summarizes the most recent studies concerning with iron overload and its relation with the initiation and development of EMs. [ABSTRACT FROM AUTHOR]

Objective: To investigate and analyze the correlation between serum levels of interleukin-1RA (IL-1RA), interleukin- 1β(IL-1β), interleukin-18 (IL-18) and the progression of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). Methods: 54 patients with NAFLD in our hospital were selected as the research object, According to NAFLD activity score (NAS), they were divided into non-NASH group and NASH group. Another 30 healthy people who came to our hospital for physical examination during the same period were selected as the control group. The correlation between serum IL-1RA, IL-1β, IL-18 levels and biochemical indexes and NAS scores was analyzed. Results: The body mass index(BMI), alanine aminotransferase(ALT), glutamyltransferase( GGT), triglyceride(TG), fasting blood glucose (GLU), IL-1βand IL-18 levels in NAFLD patients were significantly higher than those in the control group(P<0.05), and the serumlevels of IL-1RA, high density lipoprotein(HDL) were lower than those in the control group (P<0.05). The levels of ALT, AST, GGT, IL-1βand IL-18 in NASH patients were higher than those in non-NASH patients. The serum level of IL-1RA in non-NASH group was higher than that in NASH group(P<0.05). The results of correlation analysis showed that serum IL-1RA level was negatively correlated with NAS score (P<0.05), positively correlated with BMI, ALT, GGT, TG and low density lipoprotein (LDL)(P<0.05), and the levels of IL-1βand IL-18 were positively correlated with NAS scores (P<0.05). Conclusions: Serum levels of IL-1RA, IL-1βand IL-18 are related to the progression of NAFLD and NASH, and can reflect the severity of NAFLD and NASH. Inadequate secretion of IL-1RA in late stage may be an important reason for the progression of NAFLD to NASH. [ABSTRACT FROM AUTHOR]

2011年3月25日-26日中国台北主办单位:台湾大学台湾地震工程研究中心会议简介:本次研讨会的目的是提供一个平台,让结构工程领域中的年轻学者们交流、探讨研究领域的最新成果和发展趋势,讨论目前存在的问题,并提出未来存在的机遇和挑战。同时,这次研讨会也是希望为亚太地区结构工程方面

Copyright of Railway Construction Technology is the property of Railway Construction 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.)

BIM( building information modeling) is a breakthrough innovation technology in the field of construction industry. It is also an important strategic content of China ’s construction industry reform and development. It has entered the rapid application stage in the past two years. But the application of new technology to the corresponding curriculum construction and personnel training model also puts forward new challenges. The concept of 4D-BIM stems from the integration of the building product model and the construction process model,which is to assign the progress plan to the 3D building information model to form a 4D model. Teaching based on 4D-BIM project progress management can intuitively and clearly simulate the whole process of project implementation and management,enhance students’ understanding and mastery of professional knowledge,and improve the practical problem-solving ability of complex problems. Aiming at the course of Project Management-Project Schedule Management,the paper discusses the problems in the existing curriculum teaching,and puts forward the countermeasures of project schedule management teaching reform based on 4D-BIM,so as to provide theoretical reference for the application of 4D-BIM technology in project schedule management,and to provide reference for the innovation of engineering management personnel training mode. [ABSTRACT FROM AUTHOR]

ABSTRACT: Objective To evaluate the intra-observer and inter-observer replicability of the measurements obtained from three-dimensional (3D) transperineal ultrasound in the second labor. Methods The ultrasonic parameters were obtained from 48 primiparous women (single birth, head-presentation) in the second stage of labor every 15 minutes, from Mar. 2016 to Sep. 2016, which were scored and separately evaluated by two different operators using the Sono VCAD labor software. The following ultrasonic parameters were measured: head progression angle, head progression distance, head direction, and midline angle. The intra-group correlation coefficient and Bland-Altman analysis method were used to evaluate the intra-observer and inter-observer replicability of the ultrasonic parameters. Results (1) Of the four ultrasonic parameters, the inter-observer deviation was higher than the intra-observer one. (2) The replicability of the other three ultrasonic parameters were better than that of the midline angle. Among them, labor progress and head progression distance had better replicability. Conclusion During monitoring the progress of the second stage of labor with 3D transperineal ultrasound, labor progress and head progression distance had good replicability, indicating that these two ultrasonic parameters were the reliable indicators to assess fetal head progression. [ABSTRACT FROM AUTHOR]

野生动物研究生课程进修班招生为多渠道促进我国野生动物保护与利用高级人才的成长，东北林业大学研究生部和野生动物资源学院将共同举办“野生动物研究生课程进修班”。课程成绩合格者，颁发省教委统一印制并验印的《研究生课程进修结业证书》。结业的学员，如符合国务院...

Copyright of International Architecture 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 Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute 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.)

With the development of Huanghua Harbour, the continuous construction of jetties, breakwaters and other structures certainly affect the hydrodynamic and sediment environment in near-shore coastal waters. A hydrodynamic and sediment transport model of Huanghua Harbor coastal water is set up with Delft3D to simulate the changes of tidal current and sediment transport under four construction stages: first-stage project, outer waterway regulation project, 2011 project and 2013 project. The results indicate that: the short breakwaters in the first-stage project had limit effect on sediment transport in coastal water between the southeast part and northwest part of the harbor; after the outer waterway regulation project, the southeast part and northwest part of Huanghua Harbor had been divided into two relatively separate regions, and the sediment concentration and sediment transport amount in the southeast part were reduced; the construction of long northern jetty in the general port district further impeded the exchange of water body and sediment transport between the southeast part and northwest part of Huanghua Harbor, thus reducing the range of high concentration suspended sediments in Huanghua coastal area and around the entrance of coal port. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management 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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Objective: To observe the variation and clinical significance of the angle of progression (AOP) and the midline angle (MLA) in stage of labor. Methods: Transperineal ultrasound were performed in 97 single cephalic term pregnancies. AOP and MLA were performed when the cervix enlarged at 2-3 cm,4-5 cm,7-8 cm and 9-10 cm. We analyzed the relationship between AOP and MLA. Results: Along with the birth process, the AOP is gradually increasing while the MLA is reduced gradually. There was a negative correlation between AOP and MLA. Conclusions: The transperineal ultrasound can be used in monitoring of the stages of labor,and exploite the advantages of noninvasiveness, convenience, reduce infection and repeatability. [ABSTRACT FROM AUTHOR]

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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.)

目的 探讨减痛护理在初产妇分娩中的应用效果。 方法 将该院100例初产妇随机分为观察组和对照组，各50例。对照组采用常规助产护理，观察组在对照组的基础上采用减痛护理分娩，比较两组各产程时间、产程疼痛情况及分娩结局。 结果 观察组的第一产程、第二产程时间均短于对照组，差异均有统计学意义（P<0.05）。观察组的产程VAS评分、阴道分娩率、产后出血量与对照组相比，差异有统计学意义（P<0.05）。 结论 减痛护理分娩能够缩短产程，减少初产妇分娩过程中的疼痛，提高阴道分娩率，值得推广应用。 [ABSTRACT FROM AUTHOR]

Copyright of European Journal of Psychotraumatology is the property of Taylor & Francis 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.)

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Copyright of Journal of Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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.)