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目的探究肺癌患者合并肺部感染的风险因素，构建和验证一个风险预测模型，使用现有的临床数据来预测肺癌患者的肺部真菌感染风险。方法这是一项回顾性研究，收集了2021年1月至2023年3月在中山市人民医院接受治疗的390例肺癌患者的信息，利用合并和不合并肺部真菌感染的肺癌患者人口统计学和临床特征来构建预测发生肺部真菌感染的列线图。所有患者按7：3的比例随机分为训练集和内部验证集两组，应用LASSO回归方法筛选变量和选择预测因子，并使用训练集的多元logistic回归方法构建列线图模型。通过计算受试者工作特征曲线下面积（AUC）确定模型的判断能力，此外，还对模型进行了校正分析和决策曲线分析（DCA）评价预测效果。结果LASSO回归筛选出14个潜在的预测因素，进一步的Logistic回归分析结果显示肝损伤、手术、贫血、低蛋白血症、疾病历程、侵入性操作、住院时间大于2周、全身糖皮质激素应用大于2周是肺癌患者发生肺部真菌感染的独立预测因素。根据这些变量建立了一个预测模型，该模型对训练集的AUC95%CI=0.980（0.973，0.896）和内部验证的AUC95%CI=0.956 （0.795，1.000），显示具有很高的区分度。训练集和验证集的校准曲线均基本沿45°线分布，DCA 曲线显示在阈概率为大于0.03时存在净获益。结论肺癌患者合并肺部真菌感染风险预测模型的构建和验证有助于临床确定高危人群，及早进行干预或调整治疗决策。

上平焊接球节点是一种新型的空间结构用节点型式,综合了焊接球和鼓形节点的优点。节点刚度不对称,现行规范中未有相应的承载力计算公式。通过足尺节点试验结果与节点有限元模拟结果对比,验证了有限元模型参数设置的有效性和合理性。研究了焊接球直径、加劲肋数量、高度、加载管径和球壁厚度5个因素对节点受压极限承载力的影响,分析了不同因素作用下普通焊接球节点与上平焊接球节点极限承载力的比值关系,为该类节点的设计提供了参考。

In the process of graduate classification training, this paper explores and practices the cultivation of professional degree postgraduates in chemistry-related majors, with a focus on the unique aspects of materials and chemical engineering disciplines at engineering universities. It comprehensively addresses various aspects of education, including the curriculum system, thesis topic selection, professional practice, and employment skills. The cornerstone of this endeavor is to enhance the engineering practice abilities of professional degree postgraduates. Emphasis is placed on strengthening the construction of course resources, enhancing practical teaching, and fostering innovative and entrepreneurial skills, all aimed at substantially improving the quality of professional degree postgraduate education. [ABSTRACT FROM AUTHOR]

【摘要】 基质金属蛋白酶9（matrix metalloproteinases 9，MMP9）被证明在缺血性卒中患者梗死灶及梗死灶周围脑组织，梗死灶血管周围及外周血中性粒细胞中均高表达。聚合酶δ-相互作用蛋白2、白细胞介素17（interleukin17，IL-17）、肿瘤坏死因子α、IL-1β、心血管活性肽、血管内皮生长因子等可通过p38丝裂原活化蛋白激酶（mitogen activated protein kinases，MAPK）、细胞外调节蛋白激酶1/2依赖的核因子κB（nuclear factor κB，NF-κB）和活化蛋白-1、p42/p44MAPK、c-Jun氨基末端激酶、p65-NF-κB等不同途径促进MMP9的表达。MMP9的高表达与缺血性卒中出血转化关系密切，且外周血MMP9水平变化与rt-PA溶栓患者死亡或症状性颅内出血独立相关，与缺血性卒中严重程度及不良功能结局相关。MMP9 rs3918242位点基因多态性与缺血性卒中的风险及疾病严重程度可能相关，但目前研究的结果和结论尚不一致。 【Abstract】 When ischemic stroke occurs, matrix metalloproteinases 9 (MMP9) has been shown to be highly expressed in infarct lesion and surrounding cerebral tissue, and neutrophils will be highly expressed in perivascular around infarct focus and peripheral blood. Polymerase δ-interacting protein 2, interleukin17 (IL-17), tumor necrosis factor alpha, IL-1β, cardiovascular active peptide, vascular endothelial growth factor may promote the expression of MMP9 through p38 mitogen activated protein kinases (MAPK), extracellular regulated protein kinases 1/2-dependent nuclear factor κB (NF-κB) and activated protein 1, p42/p44MAPK, c-Jun N-terminal kinase, p65-NF-κB and other pathways. The high expression of MMP 9 is closely related to hemorrhagic transformation in ischemic stroke. The MMP9 level in peripheral blood is closely correlated with ischemic stroke severity, and is an independent risk factor for death and symptomatic intracranial hemorrhage in patients with rt-PA thrombolysis, and related to poor outcome of ischemic stroke patients. The gene locus polymorphism of MMP9 rs3918242 may be associated with the risk of ischemic stroke and the disease severity, but current research results are still inconsistent.

Copyright of Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica 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.)

目的总结中期妊娠引产患者发生胎盘滞留（RP）的危险因素。方法670例中期妊娠引产患者按照是 否发生RP分为胎盘滞留组（发生RP，116例）和胎盘自娩组（未发生RP，胎盘自娩，554例），采用单因素及多因素Logistic 回归分析法分析中期妊娠引产患者发生RP的影响因素、危险因素。结果单因素分析显示，患者孕次、产次、 引产孕周、辅助生殖助孕、瘢痕子宫、胎膜早破、胎盘植入、胎盘粘连、使用盐酸哌替啶是中期妊娠引产发生RP的影 响因素（P 均<0. 05）；多因素分析显示，胎盘粘连、胎盘植入、胎膜早破是中期妊娠引产患者发生RP的独立危险因素 （P 均<0. 05）。结论中期妊娠引产患者发生RP的危险因素是胎盘粘连、胎盘植入、胎膜早破。 [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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 Mycosystema is the property of Mycosystema Editorial Board 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 Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences 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.)

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.)

Copyright of Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica 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 Food Research & Development is the property of Food Research & Development 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.)

In order to meet the requirements from multi-hierarchical and multi-dimensional ground-screeding construction standard, a method of evaluating the design of ground-screeding construction robot based on fuzzy analytic hierarchy process was proposed. Firstly, four design schemes were presented according to practical requirements in ground screeding, and a multi-index model, based on analytic hierarchy process, was applied into the design scheme. Secondly, the weight matrix of indexes in every hierarchies was obtained based on the expert database founded on questionnaires and the fuzzy analytic hierarchy process was introduced to acquire a fuzzy-evaluation matrix of every indexes. Finally, a comprehensive fuzzy-evaluation vector was calculated by union operation with the weight matrix and the fuzzy evaluation matrix. The performances of four design schemes in different subordinate hierarchies under the same superior hierarchy and analyzes how the results come. In addition, the optimal results of the four design schemes under all evaluation indexes are contrasted and the final design scheme blending the four design schemes is proposed and a ground-screeding robot prototype made on the scheme is also presented in this paper. [ABSTRACT FROM AUTHOR]

Objective To evaluate the misdiagnosis rate of endometrial polyps by ultrasound imaging, and to explore simple, cost-effective, and time-saving ultrasound imaging methods to improve the diagnostic compliance rate of endometrial polyps. Methods A total of 484 patients with endometrial polyp ultrasound and pathological diagnosis in the Second People’s Hospital of Yunnan Province from January 2019 to May 2021 were included in the study. The patients were divided into two dimensional ultrasound group, color Doppler (CDFI) group and power Doppler (CDE) group. The pathological results were analyzed in different groups to find the misdiagnosis factors of endometrial polyps by ultrasound images. Results Compared with 2D ultrasound, CDE reduced the misdiagnosis rate [OR (95% CI)：0.172 (0.048～0.625)] .The misdiagnosis rates of the two-dimensional ultrasound group, CDE group, and CDFI group were 33.3%, 7.9%, and 46.0%, respectively (P < 0.001). Conclusions Based on two-dimensional ultrasound, the application of CDE can reduce the misdiagnosis rate of endometrial polyps and provide clinicians with valuable information in a short time. [ABSTRACT FROM AUTHOR]

Ga2O3 is an emerging wide bandgap semiconductor with potential applications in power and RF electronic systems. Previous studies have focused on β-Ga2O3 , and theoretical caculations have been made on the two-dimensional electronic gas (2DEG) in β-(Al xGa1 - x)2O3 / Ga2O3 heterojunction. In this paper, the effect of ε-(Al xGa1 - x )2O3 as a potential barrier on the electron transport properties of ε-(Al xGa1 - x)2O3 / ε-Ga2O3 heterojunction was studied. Firstly, the structure and properties of ε-(Al x Ga1 - x )2 O3 / ε-Ga2 O3 heterojunction are introduced. The charge density on the polarization surface caused by spontaneous polarization and piezoelectric polarization of ε-( Al x Ga1 - x )2 O3 / ε-Ga2 O3 heterojunction and the effect of polarization on the concentration of 2DEG were analyzed and calculated. Then, the relationship between ε-(Al x Ga1 - x )2O3 barrier thickness and alloy disorder scattering, interface roughness scattering and polar optical phonon scattering were analyzed under different Al mole composition. Finally, it is concluded that the interface roughness scattering and polar optical phonon scattering have important effects on the electron transport properties of ε-(Al x Ga1 - x )2 O3 / ε-Ga2 O3 heterojunction, and the alloy disorder scattering has little effect on the electron transport properties of ε-(Al x Ga1 - x )2 O3 / ε-Ga2 O3 heterojunction. The electron mobility of 2DEG concentration, alloy disorder scattering, interface roughness scattering and polar optical phonon scattering are determined by the thickness of ε-(Al xGa1 - x)2O3 barrier layer and the Al mole composition. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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 Mycosystema is the property of Mycosystema Editorial Board 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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 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.)

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.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural 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.)

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.)

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) 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 Shipin Kexue/ Food Science is the property of Food Science 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.)

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 observe the correlation between adipokines Omentin-1, adiponectin and bone mineral density in middle-aged women. Method 338 women who were admitted to our hospital from March 2017 to April 2018 were selected. According to the menopausal status, the menopausal/menopausal group (n=194) and the postmenopausal group (n=124) were divided. Multivariable-adjusted ANCOVA including age, BMI, waist circumference, smoking status, physical activity, adiponectin or Omentin-1 and hormone use was used to investigate potential relationships between the adipokines and BMD. Results Peri-/premenopausal women had higher BMD of lumbar vertebrae (0.89±0.09g/cm2), compared to postmenopausal women (0.69±0.08g/cm2) (P<0.05). In peri-/premenopausal women neither adiponectin nor Omentin-1 was significantly associated with BMD of lumbar vertebrae(P>0.05). In postmenopausal women, adiponectin was not associated with BMD of lumbar vertebrae(P>0.05). In postmenopausal women, Omentin-1 was significantly negatively correlated with lumbar spine BMD (P<0.05). Conclusion Our study provides evidence for circulating Omentin-1 levels have an inverse correlation with BMD at the lumbar spine in postmenopausal women. [ABSTRACT FROM AUTHOR]

Objective To evaluate the value of superb microvacular imaging (SMI) combined with shear wave elastography （SWE） in differential diagnosis of benign and malignant thyroid nodules. Methods SMI and SWE examinations were performed on 115 suspicious thyroid nodules in 96 cases. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of SMI, SWE and SMI combined with SWE in the diagnosis of benign and malignant thyroid nodules were evaluated based on pathological results. Results Of the 115 thyroid nodules, 44 were benign nodules and 71 were malignant nodules. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of SMI were 87.32%, 77.27%, 83.48%, 86.11% and 79.07% respectively. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of SMI combined with SWE were 91.55%, 93.19%，92.17%, 95.59% and 87.23% respectively. Conclusions SWE combined with SMI have high value in differential diagnosis of benign and malignant thyroid nodules, and the combination of them can improve the specificity and accuracy of the diagnosis for thyroid nodules. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of SWE were 85.92%, 68.18%, 79.13%, 81.33% and 75.0% respectively. [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.)

Objective To explore the value of ultrasound examination in the evaluation of the effect of interventional therapy for uterine artery embolization in cesarean section scar pregnancy. Methods In our hospital， 25 cases of pregnancy were selected as cesarean section uterine scar from January 2015 to January 2017， and the scar pregnancy was terminated after bilateral uterine artery embolization. The binary logistic regression was used to analyze theinfluence factors. Results Logistic regression analysis showed that the blood supply condition and arterial resistance index played a central role in the curative effect of uterine artery embolization interventional therapy. Conclusion Ultrasound examination is an effective method to evaluate the curative effect of uterine artery embolization in the treatment of Cesarean section scar pregnancy. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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.)

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.)

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.)

Objective To understand the infection rate of human papillomavirus（HPV） and the distribution of HPV genotype in female cervix in Zhaotong city. Methods 5 430 female patients in the outpatient section of gynaecology of our hospital were given HPV genotyping test with the method of Flowcytometry Fluorescence hybridization. At the same time， 92 patients were given cervical biopsy pathological examination. Result 705 out of 5 340 cases were HPV positive， and the infection rate was 12.98%; 554 cases （78.58%） were infected with a single subtype，151 cases （21.42%） infected with mixed subtype， among which 106 cases（15.04%） were double infection，38cases（5.39%） triple infection， 5 cases （0.71%） fourfold and 2 cases （0.28%） fivefold infection. In the cases of single positive infection， high-risk subtypes infection accounts for 60.85％ （429/705） and low risk subtype infection accounts for 17.73％（125/705） . HPV 52 infection patient take up most in low grade cervical intraepithelial neoplasia group， while HPV16 infection patients take up most in the high grade cervical intraepithelial neoplasia group. Conclusion The positive rate of HPV virus infection in Zhaotong city was 12.98%， and the most of genotyoe was HPV52， followed by HPV16， 81， 53， 58. HPV16 infection has an important role in the pathogenesis of cervical cancer. It is of critical importance to discover high-risk HPV infection through detecting HPV virus，to intervene and to treat it at an early stage. [ABSTRACT FROM AUTHOR]

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)