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Novel homozygous SPAG17 variants cause human male infertility through multiple morphological abnormalities of spermatozoal flagella related to axonemal microtubule doublets 被引量:1
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作者 Tao Liu Fazal Rahim +15 位作者 Meng-Lei Yang Meftah Uddin Jing-Wei Ye Imtiaz Ali Yousaf Raza Abu Mansoor Muhammad Shoaib Mujahid Hussain Ihsan Khan Basit Shah Asad Khan Ahmad Nisar Hui Ma Bo Xu Wasim Shah Qing-Hua Shi 《Asian Journal of Andrology》 2025年第2期245-253,共9页
Male infertility can result from impaired sperm motility caused by multiple morphological abnormalities of the flagella(MMAF).Distinct projections encircling the central microtubules of the spermatozoal axoneme play p... Male infertility can result from impaired sperm motility caused by multiple morphological abnormalities of the flagella(MMAF).Distinct projections encircling the central microtubules of the spermatozoal axoneme play pivotal roles in flagellar bending and spermatozoal movement.Mammalian sperm-associated antigen 17(SPAG17)encodes a conserved axonemal protein of cilia and flagella,forming part of the C1a projection of the central apparatus,with functions related to ciliary/flagellar motility,skeletal growth,and male fertility.This study investigated two novel homozygous SPAG17 mutations(M1:NM_206996.2,c.829+1G>T,p.Asp212_Glu276del;and M2:c.2120del,p.Leu707*)identified in four infertile patients from two consanguineous Pakistani families.These patients displayed the MMAF phenotype confirmed by Papanicolaou staining and scanning electron microscopy assays of spermatozoa.Quantitative real-time polymerase chain reaction(PCR)of patients’spermatozoa also revealed a significant decrease in SPAG17 mRNA expression,and immunofluorescence staining showed the absence of SPAG17 protein signals along the flagella.However,no apparent ciliary-related symptoms or skeletal malformations were observed in the chest X-rays of any of the patients.Transmission electron microscopy of axoneme cross-sections from the patients showed incomplete C1a projection and a higher frequency of missing microtubule doublets 1 and 9 compared with those from fertile controls.Immunofluorescence staining and Western blot analyses of spermatogenesis-associated protein 17(SPATA17),a component of the C1a projection,and sperm-associated antigen 6(SPAG6),a marker of the spring layer,revealed disrupted expression of both proteins in the patients’spermatozoa.Altogether,these findings demonstrated that SPAG17 maintains the integrity of spermatozoal flagellar axoneme,expanding the phenotypic spectrum of SPAG17 mutations in humans. 展开更多
关键词 C1a projection central apparatus male infertility multiple morphological abnormalities of the flagella SPAG17
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Propacetamol-related postoperative liver enzyme abnormalities:insights from a clinical prediction nomogram study
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作者 Shuhong Liang Haiyang Meng +4 位作者 Kai Kong Chaoying Kang Ning Liu Qianqian Yuan Jie Yang 《Journal of Chinese Pharmaceutical Sciences》 2025年第4期334-344,共11页
To investigate the correlation between propacetamol and postoperative liver enzyme abnormalities among patients,a retrospective analysis was conducted on inpatients in the thoracic surgery department spanning from Jan... To investigate the correlation between propacetamol and postoperative liver enzyme abnormalities among patients,a retrospective analysis was conducted on inpatients in the thoracic surgery department spanning from January 1 to June 30,2023.Causality assessment regarding propacetamol and postoperative liver enzyme abnormalities was performed using the updated Roussel Uclaf Causality Assessment Method(RUCAM).Furthermore,independent risk factors for liver enzyme abnormalities were identified through both univariate and multivariate analyses,followed by the construction and validation of a clinical nomogram.A total of 247 patients who received propacetamol were ultimately included in the study.Liver enzyme abnormalities post-surgery were more accurately predicted by considering the daily dose of propacetamol and the number of medications(OR(95%CI),4.831(2.797,8.344),P<0.001;10.007(3.878,25.823),P<0.001).A clinical predictive nomogram model was developed,incorporating these two independent risk factors,which exhibited favorable discrimination(AUC(95%CI),0.811(0.750,0.872)),calibration,and decision curve analysis(DCA)demonstrating the highest net benefits across a broad spectrum of threshold probabilities(10%to 90%).The daily dose of propacetamol and the number of medications were found to be independently associated with postoperative liver enzyme abnormalities.This user-friendly nomogram,comprising these two factors,might assist clinicians in assessing the risks of propacetamol-related liver dysfunction following surgery. 展开更多
关键词 Propacetamol NOMOGRAM Liver enzyme abnormalities Postoperative period Drug-induced liver injury
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Skeletal abnormalities caused by a Connexin43_(R239Q)mutation in a mouse model for autosomal recessive craniometaphyseal dysplasia
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作者 Yasuyuki Fujii Iichiro Okabe +7 位作者 Ayano Hatori Shyam Kishor Sah Jitendra Kanaujiya Melanie Fisher Rachael Norris Mark Terasaki Ernst J.Reichenberger I-Ping Chen 《Bone Research》 2025年第2期370-383,共14页
Craniometaphyseal dysplasia(CMD),a rare craniotubular disorder,occurs in an autosomal dominant(AD)or autosomal recessive(AR)form.CMD is characterized by hyperostosis of craniofacial bones and metaphyseal flaring of lo... Craniometaphyseal dysplasia(CMD),a rare craniotubular disorder,occurs in an autosomal dominant(AD)or autosomal recessive(AR)form.CMD is characterized by hyperostosis of craniofacial bones and metaphyseal flaring of long bones.Many patients with CMD suffer from neurological symptoms.The pathogenesis of CMD is not fully understood. 展开更多
关键词 connexin r q mutation mouse model hyperostosis craniofacial bones metaphyseal flaring craniometaphyseal dysplasia skeletal abnormalities autosomal recessive craniotubular disorderoccurs
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Genotypic Distribution of the Human Papillomavirus among Women with Cervical Cytological Abnormalities at the Sourô SANOU University Hospital in Bobo-Dioulasso, Burkina Faso
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作者 Pierre Zabré Tani Sagna +13 位作者 Valentin Konsegre Alioun Traore Sylvie Tuina Astrid Sana Abdou Azaque Zouré Wendkuuni Florencia Djigma Isabelle Tiendrebeogo Prosper Bado Tampoubila Edwige Yelemkoure Madeleine Kabre Kadari Cisse Albert T. Yonli Henri Gautier Ouedraogo Jacques Simporé 《American Journal of Molecular Biology》 2025年第1期11-24,共14页
Cervical cancer is the fourth most common cancer worldwide, accounting for 6.8% of new cancer cases and 8.1% of cancer-related deaths. About 85% of these deaths occurred in low- and middle-income countries. The aim of... Cervical cancer is the fourth most common cancer worldwide, accounting for 6.8% of new cancer cases and 8.1% of cancer-related deaths. About 85% of these deaths occurred in low- and middle-income countries. The aim of this study was to assess the frequency and distribution of the human papillomavirus (HPV) genotypes in women showing cytological abnormalities of the cervix at the Sourô SANOU University Hospital (CHUSS) in Bobo-Dioulasso, Burkina Faso. This is a descriptive study of women recruited at the CHUSS. The cervico-uterine smear examination was carried out at the CHUSS Anatomy and Pathology Department for cervical cancer screening. The data were collected from women with atypical cells on their cervico-uterine smear. Cervicovaginal samples were taken from consenting women and HPV genotyping was performed using the HPV Direct FLOW CHIP kit at CERBA. We obtained approval from the ethics committee. The data were analyzed using the SPSS 26 software. The results of the study showed that 67.79% of the participants were aged between 50 and 65, a group that is particularly vulnerable to persistent infection with high-risk oncogenic HPV genotypes. Of the women screened, 40.7% were HPV positive and 29.2% had multiple infections. The most common genotypes were HPV 35, followed by HPV 18, 52, 58 and 66. These data highlight the need for increased surveillance and targeted prevention strategies among this female population. 展开更多
关键词 GENOTYPING Human Papillomavirus Cervical Cytological abnormalities Burkina Faso
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A novel homozygous splicing mutation in AK7 associated with multiple morphological abnormalities of the sperm flagella
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作者 Thomas Greither Holger Herlyn 《Asian Journal of Andrology》 2025年第2期276-276,共1页
Medically assisted reproduction(MAR)techniques are highly dependent on the sperm quantity and quality.Low sperm concentrations can be bypassed at least to some point by the usage of more sophisticated MAR techniques l... Medically assisted reproduction(MAR)techniques are highly dependent on the sperm quantity and quality.Low sperm concentrations can be bypassed at least to some point by the usage of more sophisticated MAR techniques like intracytoplasmic sperm injection(ICSI).Compared to this,disruptions in established indicators of sperm quality like motility or morphology pose greater challenges for the therapy of couple infertility. 展开更多
关键词 intracytoplasmic sperm injection icsi compared AK medically assisted reproduction medically assisted reproduction mar techniques sperm flagella morphological abnormalities therapy couple infertility mar techniques
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Novel bi-allelic variants in DNAH10 lead to multiple morphological abnormalities of sperm flagella and male infertility
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作者 Muhammad Shoaib Muhammad Zubair +10 位作者 Wasim Shah Meftah Uddin Ansar Hussain Ghulam Mustafa Fazal Rahim Huan Zhang Imtiaz Ali Tanveer Abbas Yousaf Raza Sui-Xing Fan Qing-Hua Shi 《Asian Journal of Andrology》 2025年第4期516-523,共8页
Multiple morphological abnormalities of sperm flagella(MMAF)is a severe form of asthenoteratozoospermia,characterized by morphological abnormalities and reduced motility of sperm,causing male infertility.Although appr... Multiple morphological abnormalities of sperm flagella(MMAF)is a severe form of asthenoteratozoospermia,characterized by morphological abnormalities and reduced motility of sperm,causing male infertility.Although approximately 60%of MMAF cases can be explained genetically,the etiology of the remaining cases is unclear.Here,we identified two novel compound heterozygous variants in the gene,dynein axonemal heavy chain 10(DNAH10),in three patients from two unrelated Pakistani families using whole-exome sequencing(WES),including one compound heterozygous mutation(DNAH10:c.9409C>A[p.P3137T];c.12946G>C[p.D4316H])in family 1 and another compound heterozygous mutation(DNAH10:c.8849G>A[p.G2950D];c.11509C>T[p.R3687W])in family 2.All the identified variants are absent or rare in public genome databases and are predicted to have deleterious effects according to multiple bioinformatic tools.Sanger sequencing revealed that these variants follow an autosomal recessive mode of inheritance.Hematoxylin and eosin(H&E)staining revealed MMAF,including sperm head abnormalities,in the patients.In addition,immunofluorescence staining revealed loss of DNAH10 protein signals along sperm flagella.These findings broaden the spectrum of DNAH10 variants and expand understanding of the genetic basis of male infertility associated with the MMAF phenotype. 展开更多
关键词 asthenoteratozoospermia DNAH10 male infertility multiple morphological abnormalities of sperm flagella
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Two-layer model for the early warning and analysis of condensate water quality abnormalities based on autoencoder and expert knowledge
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作者 Xin Wang Shengxu Jin +11 位作者 Chengwei Cai Junran Luo Xiangshuai Tan Yunfei Guo Zhao Li Jinghui Gao Xinlin He Litao Niu Yicun Lin Wei Zhao Guangjin Chen Chun Deng 《Chinese Journal of Chemical Engineering》 2025年第8期107-116,共10页
Thermal power generation systems have stringent requirements for water and steam quality,i.e.,condensate water quality is one of the critical issues.In this paper,we designed a two-layer model based on an autoencoder ... Thermal power generation systems have stringent requirements for water and steam quality,i.e.,condensate water quality is one of the critical issues.In this paper,we designed a two-layer model based on an autoencoder and expert knowledge to achieve the early warning and causal analysis of condensate water quality abnormalities.An early warning model using an autoencoder model is built based on the historical data affecting the condensate water quality.Next,an analytical model of condensate water quality abnormalities was then developed by combining expert knowledge and trend test algorithms.Two different datasets were used to test the proposed model,respectively.The accuracy of the autoencoder model in the short-period test set is 88.83%,which shows that the early warning model can accurately analyze the condensate water quality data and achieve the purpose of early warning.For the long-time period test set,the model can correctly identify each abnormality and simultaneously indicates the cause of the abnormal condensate water quality.The proposed model can correctly identify abnormal working conditions and it is applicable to other thermal power plants. 展开更多
关键词 Early warning DATA-DRIVEN Condensate water quality Abnormality detection ALGORITHM Neural network
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Risk factors and predictive modeling of early postoperative liver function abnormalities
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作者 Lin Zhong Hao-Yuan Wang +5 位作者 Xiao-Na Li Qiong Ling Ning Hao Xiang-Yu Li Gao-Feng Zhao Min Liao 《World Journal of Hepatology》 2025年第8期233-243,共11页
BACKGROUND Research has shown that several factors can influence postoperative abnormal liver function;however,most studies on this issue have focused specifically on hepatic and cardiac surgeries,leaving limited rese... BACKGROUND Research has shown that several factors can influence postoperative abnormal liver function;however,most studies on this issue have focused specifically on hepatic and cardiac surgeries,leaving limited research on contributing factors in other types of surgeries.AIM To identify the risk factors for early postoperative abnormal liver function in multiple surgery types and construct a risk prediction model.METHODS This retrospective cohort study involved 3720 surgical patients from 5 surgical departments at Guangdong Provincial Hospital of Traditional Chinese Medicine.Patients were divided into abnormal(n=108)and normal(n=3612)groups based on liver function post-surgery.Univariate analysis and LASSO regression screened variables,followed by logistic regression to identify risk factors.A prediction model was constructed based on the variables selected via logistic re-gression.The goodness-of-fit of the model was evaluated using the Hosm-er–Lemeshow test,while discriminatory ability was measured by the area under the receiver operating characteristic curve.Calibration curves were plotted to visualize the consistency between predicted probabilities and observed outcomes.RESULTS The key factors contributing to abnormal liver function after surgery include elevated aspartate aminotransferase and alanine aminotransferase levels and reduced platelet counts pre-surgery,as well as the sevoflurane use during the procedure,among others.CONCLUSION The above factors collectively represent notable risk factors for postoperative liver function injury,and the prediction model developed based on these factors demonstrates strong predictive efficacy. 展开更多
关键词 Perioperative period Abnormal liver function Risk factor Univariate analysis Risk prediction model
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Ambulatory Blood Pressure Characteristics and Risk Factors for Circadian Rhythm Abnormalities in Elderly Patients with Hypertension
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作者 Yaqian Huang 《Journal of Clinical and Nursing Research》 2025年第3期154-160,共7页
Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patie... Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patients’blood pressure,they were divided into group A,group B,and group C,and all the data of hypertension patients in this study were collected,including age,gender,BMI,smoking,drinking,basic diseases(diabetes,cerebrovascular disease,hyperlipidemia,etc.),fasting blood glucose,ambulatory blood pressure(24-hour mean systolic pressure,24-hour mean diastolic pressure,daytime mean systolic pressure and daytime mean diastolic pressure).Results:There were significant differences in mean systolic blood pressure and mean diastolic blood pressure at night among group A,group B and group C(P<0.05).Age,hyperlipidemia and fasting blood glucose were risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium was a protective factor for circadian rhythm abnormality(P<0.05).Conclusion:Age,hyperlipidemia and fasting blood glucose are risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium is a protective factor for circadian rhythm abnormality(P<0.05). 展开更多
关键词 Elderly patients HYPERTENSION Ambulatory blood pressure Abnormal circadian rhythm
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Ambulatory Blood Pressure Characteristics and Risk Factors for Circadian Thythm Abnormalities in Elderly Patients with Hypertension
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作者 Yaqian Huang 《Journal of Clinical and Nursing Research》 2025年第2期153-159,共7页
Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patie... Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patients'blood pressure,they were divided into Group A,Group B and Group C,and all the data of hypertension patients in this study were collected,including age,gender,BMI,smoking,drinking,basic diseases(diabetes,cerebrovascular disease,hyperlipidemia,etc.),fasting blood glucose,ambulatory blood pressure(24-hour mean systolic pressure,24-hour mean diastolic pressure,daytime mean systolic pressure and daytime mean diastolic pressure).Results:There were significant differences in mean systolic blood pressure and mean diastolic blood pressure at night among Group A,Group B and Group C(P<0.05).Age,hyperlipidemia and fasting blood glucose were risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium was a protective factor for circadian rhythm abnormality(P<0.05).Conclusion:Age,hyperlipidemia and fasting blood glucose are risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium is a protective factor for circadian rhythm abnormality(P<0.05). 展开更多
关键词 Elderly patients HYPERTENSION Ambulatory blood pressure Abnormal circadian rhythm
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Relationship of Retinal Nerve Fiber Layer Thickness and Retinal Vessel Calibers with Cognitive Impairment in the Asymptomatic Polyvascular Abnormalities Population
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作者 WANG Dan Dan WANG An Xin +3 位作者 ZHANG Xiao Li WEI Wen Bin WU Shou Ling ZHAO Xing Quan 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2024年第2期196-203,共8页
Objective Cognitive impairment(CI)in older individuals has a high morbidity rate worldwide,with poor diagnostic methods and susceptible population identification.This study aimed to investigate the relationship betwee... Objective Cognitive impairment(CI)in older individuals has a high morbidity rate worldwide,with poor diagnostic methods and susceptible population identification.This study aimed to investigate the relationship between different retinal metrics and CI in a particular population,emphasizing polyvascular status.Methods We collected information from the Asymptomatic Polyvascular Abnormalities Community Study on retinal vessel calibers,retinal nerve fiber layer(RNFL)thickness,and cognitive function of 3,785participants,aged 40 years or older.Logistic regression was used to analyze the relationship between retinal metrics and cognitive function.Subgroups stratified by different vascular statuses were also analyzed.Results RNFL thickness was significantly thinner in the CI group(odds ratio:0.973,95%confidence interval:0.953–0.994).In the subgroup analysis,the difference still existed in the non-intracranial arterial stenosis,non-extracranial carotid arterial stenosis,and peripheral arterial disease subgroups(P<0.05).Conclusion A thin RNFL is associated with CI,especially in people with non-large vessel stenosis.The underlying small vessel change in RNFL and CI should be investigated in the future. 展开更多
关键词 Retinal nerve fiber layer Cognitive impairment Polyvascular abnormality
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Analysis of the Efficacy of Prenatal B-Ultrasound in Diagnosing Fetal Abnormalities
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作者 Juan Chen Qiumin Li 《Journal of Clinical and Nursing Research》 2024年第5期47-51,共5页
Objective:To explore the positive significance of using prenatal B-ultrasound in diagnosing fetal abnormalities.Methods:A total of 200 pregnant women who visited Shaanxi Provincial People’s Hospital between January 2... Objective:To explore the positive significance of using prenatal B-ultrasound in diagnosing fetal abnormalities.Methods:A total of 200 pregnant women who visited Shaanxi Provincial People’s Hospital between January 2023 and January 2024 were recruited as the research subjects.All pregnant women received prenatal examinations.A retrospective analysis was carried out to analyze the positive significance of prenatal B-ultrasound examination in the diagnosis of fetal abnormalities.Results:Prenatal B-ultrasound examination detected 10 cases of fetal abnormalities,with a detection rate of 5.00%.When compared with the postnatal examination results of 5.50%,the difference was insignificant(P>0.05).Moreover,comparing the fetal limb abnormalities and cardiovascular abnormalities in prenatal B-ultrasound examination and postnatal examination,one case of congenital heart disease was missed in the prenatal B-ultrasound examination,and the others were consistent with the postnatal examination results,with a coincidence rate of 90.91%,indicating a high compliance rate.Conclusion:Fetal abnormalities have a great impact on mothers,babies,and families,and it is particularly important to strengthen diagnosis during this process.Prenatal B-ultrasound examination can improve the accuracy of diagnosis of fetal abnormalities and can be promoted in clinical practice as a basis for screening fetal abnormalities. 展开更多
关键词 Prenatal B-ultrasound Fetal abnormalities Diagnostic value
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深层灰岩孔隙发育与保持机理--以四川盆地中部上二叠统长兴组为例 被引量:4
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作者 文龙 罗冰 +6 位作者 张本健 陈骁 李文正 刘一锋 胡安平 张玺华 沈安江 《石油勘探与开发》 北大核心 2025年第2期292-305,共14页
近年来四川盆地蓬深10、合深9、潼深17和正阳1等井钻探证实深层上二叠统长兴组发育一套孔隙型礁滩复合体灰岩储层,突破了深层碳酸盐岩大油气田主要分布于孔隙型白云岩储层和岩溶缝洞型灰岩储层的传统认识。基于岩心和薄片观察、储层地... 近年来四川盆地蓬深10、合深9、潼深17和正阳1等井钻探证实深层上二叠统长兴组发育一套孔隙型礁滩复合体灰岩储层,突破了深层碳酸盐岩大油气田主要分布于孔隙型白云岩储层和岩溶缝洞型灰岩储层的传统认识。基于岩心和薄片观察、储层地球化学特征分析、井震联合的储层识别和追踪,开展深层礁滩灰岩孔隙形成机理研究,取得4个方面认识:①深层长兴组孔隙型礁滩复合体灰岩储集空间以粒间孔、格架孔、生物体腔孔、铸模孔和溶孔为主,形成于沉积和早表生环境;②断续分布的多孔礁滩复合体被相对致密的泥晶灰岩包裹,在复合体持续增温条件下导致局部异常高压的形成;③长兴组储层的底板为上二叠统吴家坪组互层的致密泥岩和灰岩,顶板为下三叠统飞仙关组一段致密泥晶灰岩夹泥岩,在致密顶底板的夹持下,导致长兴组区域异常高压的形成;异常高压(超压封存箱)是沉积和早表生环境形成的孔隙在深层得以保持的关键;④在顶底板和礁滩复合体识别基础上,通过井震联合预测有利礁滩灰岩储层分布面积达10.3×10^(4) km^(2)。上述认识奠定了深层孔隙型灰岩储层发育的理论基础,拓展了四川盆地深层灰岩储层勘探新领域。 展开更多
关键词 深层 灰岩 孔隙型礁滩灰岩储层 孔隙形成与保持 异常高压 长兴组 四川盆地
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基于电磁-热耦合的中压电缆热缩终端异常发热机理及状态监测研究 被引量:1
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作者 唐庆华 方静 +3 位作者 李旭 宋鹏先 李季 于洋 《绝缘材料》 北大核心 2025年第3期141-151,共11页
中压电缆热缩终端常出现局部异常发热现象,该现象会加速电缆绝缘老化,甚至导致电缆绝缘过早失效。为了揭示中压电缆热缩终端异常发热原因,本文基于电磁-热耦合对电缆热缩终端在各种典型故障条件下的电热场进行仿真。结果表明:在电缆长... 中压电缆热缩终端常出现局部异常发热现象,该现象会加速电缆绝缘老化,甚至导致电缆绝缘过早失效。为了揭示中压电缆热缩终端异常发热原因,本文基于电磁-热耦合对电缆热缩终端在各种典型故障条件下的电热场进行仿真。结果表明:在电缆长期运行过程中,当应力控制管发生老化,会导致绝缘局部温升现象,且老化越严重,温升数值越高。此外,当终端外表面因积尘受潮形成污秽且污秽层位于外半导电层断口附近时会形成明显热点,而当污秽层远离断口时,则热点衰退。进一步分析应力控制管内外部受潮下的终端热场分布发现,只有内部受潮时才会引起热点出现。根据所建立的考虑终端内部缺陷热点的热路模型,实施温度反演对热缩终端内部绝缘界面最高温度点进行监测,验证了该方法的有效性。 展开更多
关键词 中压电缆 热缩终端 异常发热 电磁-热耦合 温度反演
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温肾健脾法对高效抗转录病毒疗法后免疫重建不全艾滋病患者异常免疫激活的影响 被引量:1
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作者 邹雯 陈昕 +3 位作者 李永红 闫玉光 王健 刘颖 《中华中医药杂志》 北大核心 2025年第1期447-450,共4页
目的:观察中药温肾健脾颗粒对高效抗转录病毒疗法(HAART)后免疫重建不良艾滋病患者T淋巴细胞激活亚群HLADR^(+)CD_(38)^(+)/HLADR^(+)CD_(38)^(-)/HLADR^(-)CD_(38)^(+)占CD_(4)^(+)T淋巴细胞及CD_(8)^(+)T淋巴细胞比值的变化,及各T淋... 目的:观察中药温肾健脾颗粒对高效抗转录病毒疗法(HAART)后免疫重建不良艾滋病患者T淋巴细胞激活亚群HLADR^(+)CD_(38)^(+)/HLADR^(+)CD_(38)^(-)/HLADR^(-)CD_(38)^(+)占CD_(4)^(+)T淋巴细胞及CD_(8)^(+)T淋巴细胞比值的变化,及各T淋巴细胞激活亚群比例和CD+4T淋巴细胞计数的相关性,评价对异常免疫激活的影响。方法:将60例HAART后免疫重建不全的艾滋病患者随机分为治疗组30例和对照组30例,分别采用中药温肾健脾颗粒+HAART(治疗组)和模拟剂+HAART(对照组)治疗24周,并于治疗前及治疗后12、24周时检测两组患者T淋巴细胞激活亚群HLADR^(+)CD_(38)^(+)/HLADR^(+)CD_(38)^(-)/HLADR^(-)CD_(38)^(+)占CD_(4)^(+)T淋巴细胞及CD_(8)^(+)T淋巴细胞比值。结果:温肾健脾法治疗相关的免疫激活水平的调节主要与HLADR^(+)CD_(38)^(+)以及HLADR^(+)CD_(38)^(-)/HLADR^(-)CD_(38)^(+)占CD_(4)^(+)T淋巴及CD+8T淋巴细胞有关,HLADRCD+38无显著性差异。治疗组HLADR^(+)CD_(38)^(+)/HLADR^(+)CD_(38)^(-)/HLADR^(-)CD_(38)^(+)占CD_(4)^(+)T淋巴细胞及CD+8T淋巴细胞比值均呈现先下降后回升的态势,对照组则呈现先上升后下降的相反态势。结论:温肾健脾法对CD_(4)^(+)T淋巴细胞计数的提升不是通过单纯抑制(下调)的途径,而可能是对其抑制与激活状态的双向调节。 展开更多
关键词 艾滋病 免疫重建 中药 异常免疫激活 温肾健脾法
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基于门控注意网络模型的天然气管道泄漏检测新方法 被引量:2
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作者 董宏丽 孙桐 +2 位作者 王闯 杨帆 商柔 《天然气工业》 北大核心 2025年第1期25-36,共12页
准确的泄漏检测对维护天然气管道运行安全至关重要。近年来,深度学习已成为天然气管道泄漏检测的常用方法,但由于天然气管道数据具有复杂的时间动态特性,进而导致大多数深度学习方法在识别泄漏类型方面难以取得优异的性能。此外,检测模... 准确的泄漏检测对维护天然气管道运行安全至关重要。近年来,深度学习已成为天然气管道泄漏检测的常用方法,但由于天然气管道数据具有复杂的时间动态特性,进而导致大多数深度学习方法在识别泄漏类型方面难以取得优异的性能。此外,检测模型的初始超参数选择通常是随机的,这也可能会导致识别性能不稳定。为了提升天然气管道泄漏检测的准确性,提出一种基于麻雀搜索算法的门控注意网络模型(Sparrow Search Algorithm-based Gate Attention Network, SGAN)。首先,为了提取有效且具有鲁棒性的数据特征,采用带交叉熵函数的麻雀搜索算法对门控循环单元的初始超参数进行全局搜索;然后,设计了一种异常注意力机制,通过对数据特征进行加权来放大正常和泄漏数据之间的区分差异;最后,将所提算法应用于天然气管道的泄漏检测。研究结果表明:(1) SGAN模型能够实现模型超参数的自适应优化,并加快了模型的收敛速度,使模型性能更加稳定;(2) SGAN模型通过对正常与泄漏特征进行加权处理,显著提升了数据特征的区分效果;(3) SGAN模型的学习表示能力和泛化能力得到了明显加强,以此提高了对数据的分类性能;(4) SGAN模型能够显著提高天然气管道泄漏检测的准确率和召回率,可减少误报率和漏报率,并且其性能明显优于常规分类算法。结论认为,SGAN模型通过自适应优化和异常注意力机制结合,能精准识别泄漏特征,并快速响应天然气管道中的泄漏情况,有效提升了检测的准确性和可靠性,显著降低了安全事故风险,为天然气管道泄漏检测提供了一种高效、智能的解决新方案。 展开更多
关键词 天然气管道 泄漏检测 麻雀搜索算法 门控循环单元 异常注意力机制 自适应优化 智能
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固冲汤辅助孕激素治疗围绝经期异常子宫出血临床观察 被引量:1
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作者 张平 康紫厚 +2 位作者 郑淑青 宋献忠 李淑青 《中医药临床杂志》 2025年第7期1431-1436,共6页
目的:探讨固冲汤辅助孕激素对围绝经期异常子宫出血(AUB)患者疗效、性激素、月经及子宫异常改善的影响。方法:郑州市第二人民医院2020年2月—2023年12月114例围绝经期AUB患者,依据入院顺序分为孕激素组和中药辅助组,各57例。孕激素组接... 目的:探讨固冲汤辅助孕激素对围绝经期异常子宫出血(AUB)患者疗效、性激素、月经及子宫异常改善的影响。方法:郑州市第二人民医院2020年2月—2023年12月114例围绝经期AUB患者,依据入院顺序分为孕激素组和中药辅助组,各57例。孕激素组接受西药地屈孕酮片治疗。中药辅助组在西药治疗基础上采用固冲汤辅助治疗。治疗3个月经周期后,比较2组临床总有效率、中医证候积分、月经改善情况(经期、经量、月经周期、血红蛋白水平)、性激素水平[黄体生成素(LH)、雌二醇(E_(2))、促性腺激素(FSH)、孕酮(P)]、子宫异常改善情况[子宫平滑肌收缩幅度、子宫内膜厚度、子宫平滑肌收缩频率]及治疗期间不良反应。结果:治疗3个月经周期后,中药辅助组临床总有效率为98.25%,高于孕激素组85.96%(P<0.05);治疗后,中药辅助组中医证候主证积分、次症积分、总积分均低于孕激素组(P<0.05);中药辅助组月经量少于孕激素组,月经周期及经期均短于孕激素组,血红蛋白水平高于孕激素组(P<0.05);中药辅助组LH、E_(2)、FSH水平均低于孕激素组,血清P水平高于孕激素组(P<0.05);中药辅助组子宫内膜厚度小于孕激素组,子宫平滑肌收缩幅度及频率高于孕激素组(P<0.05);治疗期间,中药辅助组不良反应发生率为12.28%,略高于孕激素组8.77%,但组间无显著差异(P>0.05)。结论:固冲汤辅助孕激素地屈孕酮片治疗围绝经期AUB患者可有效调节异常出血,改善性激素水平及月经周期,提升子宫功能,促进病情恢复,且具有较高的用药安全性。 展开更多
关键词 围绝经期 异常子宫出血 固冲汤 地屈孕酮片
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免疫异常数据的金属回流双极直流配电线路状态估计保护方法 被引量:1
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作者 曾琦 曾维刚 +4 位作者 廖建权 王少雄 郑宗生 王渝红 周念成 《电力自动化设备》 北大核心 2025年第1期16-24,共9页
实际工程中的量测可能存在异常数据干扰,增加保护误动的风险。为此,基于模型匹配的思想,提出一种免疫异常数据的直流配电线路状态估计保护方法。考虑金属回流双极直流线路的极间耦合,建立线路的精细化等值模型。据此得到系统的量测方程... 实际工程中的量测可能存在异常数据干扰,增加保护误动的风险。为此,基于模型匹配的思想,提出一种免疫异常数据的直流配电线路状态估计保护方法。考虑金属回流双极直流线路的极间耦合,建立线路的精细化等值模型。据此得到系统的量测方程,并根据二次积分法将其离散化以便于求解。对于可能存在的异常数据问题,提出基于窗口图傅里叶变换对数据进行预处理,将数据视为图信号并赋予“频率”的概念,通过提取低频信号达到剔除随机脉冲等高频异常数据的目的。基于递推最小二乘算法对预处理后的状态估计模型进行求解,根据估计模型和实测模型的匹配度构建保护判据,实现区内和区外故障的识别。仿真结果表明,该方法可快速、准确识别区内故障,并有效避免异常数据干扰,同时具有较强的耐高阻、抗通信延时等性能。 展开更多
关键词 直流配电 线路保护 异常数据 图傅里叶变换 状态估计 递推最小二乘
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光伏发电机组异动信息主动增量式更新算法 被引量:1
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作者 王晖 赵咨钧 +1 位作者 管保晋 曲诺亚 《电子设计工程》 2025年第1期132-136,共5页
针对进行光伏发电机组密集型异动信息更新操作时,出现更新时延长、更新结果不完整的问题,提出了光伏发电机组异动信息主动增量式更新算法。通过特征提取、小波变换和模极大值计算来获取有效的增量式特征;构建增量特征成词袋模型并进行标... 针对进行光伏发电机组密集型异动信息更新操作时,出现更新时延长、更新结果不完整的问题,提出了光伏发电机组异动信息主动增量式更新算法。通过特征提取、小波变换和模极大值计算来获取有效的增量式特征;构建增量特征成词袋模型并进行标注;结合蚁群算法搜索异动信息,计算最小平均带宽和最佳更新路径,通过动态更新相容类和决策类异动信息完善数据;采用2阶段集合式更新方案进行信息增量收集和校验增量分发,以获取主动增量式更新异动信息。由实验结果可知,该算法更新时延在全部校验节点下未超过40 s,且能够保证更新结果具有完整性。 展开更多
关键词 光伏发电机组 异动信息 主动增量式 更新
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系统性红斑狼疮并发股骨头坏死危险因素列线图预测模型的建立和验证 被引量:1
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作者 徐文博 汪利合 +1 位作者 李松伟 史鹏博 《中国组织工程研究》 CAS 北大核心 2025年第15期3215-3226,共12页
背景:股骨头坏死是系统性红斑狼疮患者常见的并发症,若能早期对其发生风险进行预测与验证,将有助于避免或延缓股骨头坏死的发展。目的:分析系统性红斑狼疮患者并发股骨头坏死的危险因素,构建系统性红斑狼疮患者并发股骨头坏死的列线图... 背景:股骨头坏死是系统性红斑狼疮患者常见的并发症,若能早期对其发生风险进行预测与验证,将有助于避免或延缓股骨头坏死的发展。目的:分析系统性红斑狼疮患者并发股骨头坏死的危险因素,构建系统性红斑狼疮患者并发股骨头坏死的列线图预测模型并进行验证。方法:回顾性分析2013年1月至2022年12月首次就诊于河南中医药大学第一附属医院的914例系统性红斑狼疮患者的病历资料,根据是否发生股骨头坏死分为发生股骨头坏死组(n=100)和未发生股骨头坏死组(n=814)。采用单因素、LASSO回归和多因素Logistic回归分析筛选和确定系统性红斑狼疮并发股骨头坏死的危险因素。同时将数据集按照7∶3的比例随机分为训练集和测试集,并基于多因素Logistic回归分析结果,构建系统性红斑狼疮并发股骨头坏死的列线图预测模型。同时,使用受试者工作特征曲线、Hosmer-Lemeshow校准曲线和决策曲线对列线图的性能进行评估。结果与结论:①股骨头坏死组与未发生股骨头坏死组患者在系统性红斑狼疮病程、系统性红斑狼疮疾病活动度评分、狼疮性肾炎、呼吸系统受累、胃肠道受累、干燥综合征、骨质疏松、抗核糖核蛋白抗体阳性、补体C3降低、环磷酰胺、吗替麦考酚酯、生物抑制剂、糖皮质激素最大日剂量、糖皮质激素冲击治疗方面差异有显著性意义(P<0.05);②采用LASSO回归分析方法筛选出10个与系统性红斑狼疮并发股骨头坏死风险相关的预测变量,将其纳入多因素Logistic回归分析,结果显示系统性红斑狼疮病程、呼吸系统受累、干燥综合征、骨质疏松、抗核糖核蛋白抗体阳性、环磷酰胺、吗替麦考酚酯、生物抑制剂、糖皮质激素最大日剂量是系统性红斑狼疮患者发生股骨头坏死的独立危险因素(P<0.05);③训练集中预测发生风险的受试者工作特征曲线下面积为0.802(95%CI=0.742-0.862),测试集预测发生股骨头坏死风险受试者工作特征曲线下面积为0.811(95%CI=0.745-0.876);Hosmer-Lemeshow校准曲线拟合度较好(训练集,P=0.447;验证集,P=0.870);决策曲线显示使用列线图预测模型预测系统性红斑狼疮患者发生股骨头坏死的风险是有益的;④月经异常为女性系统性红斑狼疮患者并发股骨头坏死的危险因素之一;⑤此次研究结果提示,系统性红斑狼疮并发股骨头坏死的危险因素是多因素的,同时建立了一个包含9个危险因素的列线图预测模型,可将其用于预测系统性红斑狼疮患者发生股骨头坏死的风险;此外,首次报道了月经异常为女性系统性红斑狼疮并发股骨头坏死的危险因素之一。 展开更多
关键词 系统性红斑狼疮 股骨头坏死 危险因素 列线图 预测模型 月经异常 LASSO回归 多因素Logistic回归
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