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Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Jilin University (Medicine Edition) is the property of Jilin 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 China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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.)

Human papilloma virus (HPV) infection is one of the most common sexually transmitted diseases, which is associated with the development of tumors in multiple organs. In recent years, the impact of HPV infection on fertility has garnered significant attention, particularly its vertical transmission through germ cells and potential effects on early embryonic development. Studies have shown that HPV infection may affect sperm quality, leading to infertility, and may also interfere with embryonic development, increasing the risk of spontaneous abortion and adversely affecting pregnancy outcomes in assisted reproductive technology. This review summarizes the research progress on the vertical transmission of HPV through sperm cells and its impact on early embryonic development, to deeply understand the potential threat of HPV to reproductive health and to provide references for clinical practice and further research. [ABSTRACT FROM AUTHOR]

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 New Medicine is the property of Sun Yat Sen University 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 impact of the PPOS (progestin primed ovarian stimulation) protocol on the mRNA and protein expression levels of aromatase CYP19A1 and ERB receptor in granulosa cells compared to the conventional long protocol in patients with repeated implantation failure (RIF) experiencing low LH levels during in vitro fertilization-embryo transfer (IVF-ET) procedures. Methods A total of 36 RIF patients who underwent IVF-ET at the Reproductive Medicine Center of the Affiliated Maternity and Child Health Hospital of Nantong University from January 2020 to January 2022 were enrolled in the study. In the first cycle, the long protocol was used, and in the second cycle, the PPOS protocol was adopted. Granulosa cells from follicular fluid were collected from both protocols for the analysis of mRNA and protein expression levels of CYP19A1 and ERẞ receptors. Clinical and laboratory parameters were compared between the two protocols for a self-controlled analysis to investigate the impact on granulosa cell development. Results The comparison of the average number of retrieved oocytes and mature oocytes showed no statistically significant differences between the PPOS and long protocols (P>0.05). However, the PPOS protocol demonstrated significantly higher LH levels on the trigger day, normal fertilization (2PN) numbers, normal fertilization rates, and high quality embryo rates compared to the long protocol (P<0.05). The mRNA expression levels of CYP19A1 and ERB receptors in the PPOS group were significantly higher than those in the control group (P<0.001). Consistent with the mRNA expression results, the protein expression levels of CYP19A1 and ERB receptors in the PPOS group were also significantly higher than those in the control group (P<0.05). Conclusion In RIF patients with low LH levels during the ovulation induction process in the first cycle using the long protocol, switching to the PPOS protocol in the second cycle resulted in a significant increase in LH levels on the trigger day. Simultaneously, mRNA and protein levels of ERB and CYP19A1 in granulosa cells were significantly higher in the PPOS group. The use of the PPOS protocol improved LH levels, enhanced oocyte quality, and subsequently increased embryo quality. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare 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 associations between welding fume metal composition and thyroid function of occupational workers, and to provide the evidence for early protection of occupational injury among welders. Methods A total of 484 workers (223 CO, gas shielded welders, 261 auxiliary workers) in a vehicle manufacturing enterprise who participated in occupational health examination were: selected using a cluster sampling method in April 2022. The; concentrations of metals in the; air of work places and urine: of operational workers were: detected by inductively coupled plasma emission spectrometry and inductively coupled plasma mass spectrometry, respectively. Triiodothyronine: (TT3), thyroxine: (TT4), free: thyroxine: (FT4), frex: triiodothyronine: (FT3) and thyroid stimulating hormone: (TSH) were: detected by fully automated chemiluminescence assay. The: associations between metals and thyroid function were analyzer! by generalized linear regression, when: urinary metals were: corrected using creatinine. Results The: primary metals in wedding fumes were: chromium (Cr), cropper (Cu), iron (Fc), manganese: (Mn), nicked (Ni) and tellurium (Tc:). Their concentrations were: 10. 19 pig/m³, 40. 38 p, g/m³, 1 658. 06 pig/m³, 155. 37 pig/m³, 7. 94 pig/m³and 6. 94 pig/m³, respectively, which were: significantly higher than those: in the: control areas. The: exceedance rate: of Mn in electric wedding posts was 60% (>0. 15 mg/m³). The: urinary concentrations of Cr, Mn, Ni and Tc: in welders were: 0.09, 1.08 X 10 2, 0. 13 and 0.72 X 10 2 p,g/mmcd creatinine, respectively, higher than those: of auxiliary workers (all with P <0.05). Urinary Mn and Tc: concentrations were positively correlated with scrum FT3 [$(95%CI) =0.03(0.01 -0.06)] and FT4 (0(95%C/) =0.02(0.00 - 0.04)], respectively (both P <0. 05). Conclusion The main components of the welding fumes produced by CO2 gas shielded welding are Or, Mn, Fc, Ni, Ou and Tc. Exposing to Mn and Tc is associated with elevated thyroid hormone levels. [ABSTRACT FROM AUTHOR]

To investigate the clinical significance of the expression of peripheral blood T cell activation molecule CD38 and human leukocyte antigen DR (HLA-DR) in children with infectious mononucleosis (IM). Flow cytometry was used to detect the expression of activation molecules CD38 and HLA-DR in T cells in 45 children with IM during the acute phase and recovery phase, and the clinical data was compared with 30 healthy children. The correlation between the expression of CD38 and HLA-DR in T cells during the acute phase of children with IM and EB virus load, liver function indexes, the proportion of atypical lymphocytes in peripheral blood, and lymphocyte count were analyzed, and the ROC curve was used to analyze the CD8+ CD38+ diagnostic efficacy of T and CD8+ HLA-DR+ T cell percentages. Compared with the control group, the expression of CD38 and HLA-DR in T cells of children with IM in the acute phase were increased(P<0.05). The percentages of CD8+ CD38+ T and CD8+ HLA-DR+ T cells were positively correlated with EBV-DNA, ALT, AST, LDH, percentage of atypical lymphocytes, and lymphocyte counts, respectively(P<0.05), however, negatively correlated with ALB (P<0.05); the percentages of CD4+ CD38+ T and CD4+ HLA-DR+ T cells were not significantly correlated with the above indicators (P>0.05). The expression of CD38 and HLA-DR in T cells in the convalescent phase of IM were lower than those in the acute phase (P<0.05). ROC curve analysis of the percentages of CD8+ CD38+ T and CD8+ HLA-DR+ T cells showed that the AUC values for diagnosing IM in children were 0.931 and 0.993, respectively, the specificity was 100 %, and the sensitivity was 88.89 % and 93.33 %, respectively. The detection of CD38 and HLA-DR in T cells by flow cytometry is helpful for predicting the development of IM. The percentage of CD8+ CD38+ T and CD8+ HLA-DR+ T cells in peripheral blood cells can not only reflect the severity of liver function damage in the acute phase of IM, but also serve as a flow-diagnostic indicator for children with IM. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica 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 Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare 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.)

Obstructive sleep apnea syndrome (OSAS) is one of the common clinical diseases with a high prevalence, potentially fatality, and a serious threat to human health. Osteoporosis (OP), known as the silent killer, is a chronic disease that seriously endangers bone health. With the acceleration of China's aging process, the number of OP patients in China has ranked the top in the world. Healthy China 2030 advocates early screening for OP, which is closely related to the occurrence and development of OSAS and its complications. This paper reviews the related research in OSAS and OP to provide a basis for clinical in-depth follow-up research. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Diabetes Mellitus is the property of Chinese Journal of Diabetes Mellitus 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.)

螺纹组件在安装时发生螺纹失效，采用宏观与微观对失效件形貌进行观察，并对失效件材质进行硬度 检验、金相分析、尺寸测量等。结果表明：失效件的螺纹发生了咬死，属损坏程度最严重的黏结磨损。依据 黏结磨损发生的机理，并结合螺纹组件现场安装情况，最终确定选用同种材料作为摩擦副是导致螺纹组件发 生黏结磨损的内因，装配时螺纹组件在棘轮扳手作用下悬空装配且单向受力，造成棘轮扳手实际施力方向与 螺纹轴线之间不垂直是导致螺纹组件发生黏结磨损的主要原因。 [ABSTRACT FROM AUTHOR]

Copyright of Modern Food Science & Technology is the property of Editorial Office of Modern Food 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 Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare 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 Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics 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 Coal Science & Technology (0253-2336) is the property of Coal 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.)

Objective To analyze the influencing factors of survival of patients with airway stenosis requiring clinical interventions after lung transplantation. Methods Clinical data of 66 patients with airway stenosis requiring clinical interventions after lung transplantation were retrospectively analyzed. Univariate and multivariate Cox’s regression models were adopted to analyze the influencing factors of survival of all patients with airway stenosis and those with early airway stenosis. Kaplan-Meier method was used to calculate the overall survival and delineate the survival curve. Results For 66 patients with airway stenosis, the median airway stenosis-free time was 72 (52,102) d, 27% (18/66) for central airway stenosis and 73% (48/66) for distal airway stenosis. Postoperative mechanical ventilation time [hazard ratio (HR) 1.037, 95% confidence interval (CI) 1.005-1.070, P=0.024] and type of surgery (HR 0.400, 95%CI 0.177-0.903, P=0.027) were correlated with the survival of patients with airway stenosis after lung transplantation. The longer the postoperative mechanical ventilation time, the higher the risk of mortality of the recipients. The overall survival of airway stenosis recipients undergoing bilateral lung transplantation was better than that of their counterparts after single lung transplantation. Subgroup analysis showed that grade 3 primary graft dysfunction (PGD) (HR 4.577, 95%CI 1.439-14.555, P=0.010) and immunosuppressive drugs (HR 0.079, 95%CI 0.022-0.287, P<0.001) were associated with the survival of patients with early airway stenosis after lung transplantation. The overall survival of patients with early airway stenosis after lung transplantation without grade 3 PGD was better compared with that of those with grade 3 PGD. The overall survival of patients with early airway stenosis after lung transplantation treated with tacrolimus was superior to that of their counterparts treated with cyclosporine. Conclusions Long postoperative mechanical ventilation time, single lung transplantation, grade 3 PGD and use of cyclosporine may affect the survival of patients with airway stenosis after lung transplantation. [ABSTRACT FROM AUTHOR]