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Late Mesozoic Exhumation of the Huangling Massif:Constraints on the Evolution of the Middle Yangtze River
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作者 SU Jianchao lin xu +7 位作者 LI Chang’an Jolivet MARC WU lin CHENG Feng DENG Bin WU Zhonghai CHEN Xiaokang HU Chengwei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2024年第1期250-264,共15页
Plate subduction leads to complex exhumation processes on continents.The Huangling Massif lies at the northern margin of the South China Block.Whether the Huangling Massif was exhumed as a watershed of the middle reac... Plate subduction leads to complex exhumation processes on continents.The Huangling Massif lies at the northern margin of the South China Block.Whether the Huangling Massif was exhumed as a watershed of the middle reaches of the Paleo-Yangtze River during the Mesozoic remains under debate.We examined the exhumation history of the Huangling Massif based on six granite bedrock samples,using apatite fission track(AFT)and apatite and zircon(U-Th)/He(AHe and ZHe)thermochronology.These samples yielded ages of 157–132 Ma(ZHe),119–106 Ma(AFT),and 114–72 Ma(AHe),respectively.Thermal modeling revealed that three phases of rapid cooling occurred during the Late Jurassic–Early Cretaceous,late Early Cretaceous,and Late Cretaceous.These exhumation processes led to the high topographic relief responsible for the emergence of the Huangling Massif.The integrated of our new data with published sedimentological records suggests that the Huangling Massif might have been the watershed of the middle reaches of the Paleo-Yangtze River since the Cretaceous.At that time,the rivers flowed westward into the Sichuan Basin and eastward into the Jianghan Basin.The subduction of the Pacific Plate beneath the Asian continent in the Mesozoic deeply influenced the geomorphic evolution of the South China Block. 展开更多
关键词 APATITE ZIRCON (U-Th)/He fission track Huangling Massif Yangtze River
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Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients 被引量:21
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作者 Jun-Hui Du Xia Li +5 位作者 Rong Li lin xu Ran-Ran Ma Song-Fang Liu Zhong Zhang Hong-Zhi Sun 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2014年第6期968-973,共6页
AIM: To compare apelin-13, a ligand of G-proteincoupled receptor which has been shown to be involved in retinal angiogenesis, and vascular endothelial growth factor(VEGF) serum levels in type 2 diabetes mellitus(T2DM)... AIM: To compare apelin-13, a ligand of G-proteincoupled receptor which has been shown to be involved in retinal angiogenesis, and vascular endothelial growth factor(VEGF) serum levels in type 2 diabetes mellitus(T2DM) with or without retinopathy, and to investigate the relationship between the serum concentration of apelin-13 and diabetes retinopathy.METHODS: Sixty-nine patients with T2 DM were enrolled.Of the 69 patients, 16 had proliferative diabetic retinopathy(PDR group), 23 had non-PDR(NPDR group)and 30 had no retinopathy(T2DM group). Subjects’ information, including demographics, medical history,and use of medications were recorded. Their serum samples were collected for measuring the levels of C-reactive protein(CRP), serum lipid and glycosylated hemoglobin. Apelin-13 and VEGF serum levels were measured by enzyme-linked immunosorbent assay.Kruskal-Wallis test and one-way ANOVA were used to compare the differences among these groups. Chi-square test was used to assess categorical variables.Correlations between variables were investigated by Spearman rho correlation test and stepwise regression analysis. All statistical analyses were performed through SPSS 17.0 software.RESULTS: Sex, age, body mass index(BMI), blood pressure, CRP, hemoglobin A1c(Hb A1c) have no significantly difference in the three groups. Serum level of apelin-13 was significantly elevated in PDR group as compared with T2 DM group(P =0.041). Differences of VEGF serum concentration in the three groups were statistically significant(P =0.007, P =0.007 and P 【0.001,respectively). Spearman rho correlation test showed that serum apelin-13 was positively correlated with BMI,serum triglycerides, VEGF, but not with age, duration of diabetes, blood pressure, CRP, Hb A1 c and total-cholesterol. Stepwise regression analysis showed that BMI also significantly associated with serum apelin-13(P =0.002), while VEGF and serum triglycerides were irrelevant. CONCLUSION: This study elucidated a positive association of apelin-13 serum level with PDR, but not with VEGF. Apelin-13 may influence the promotion of PDR but unrelated with VEGF. 展开更多
关键词 diabetic retinopathy APELIN-13 vascular endothelial growth factor
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Clinical value of detecting autoantibodies against β1-, β2-, and α1-adrenergic receptors in carvedilol treatment of patients with heart failure 被引量:2
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作者 Dong-Yan HOU lin xu +7 位作者 Zhi-Yong ZHANG Xiao-Rong xu Xin WANG Juan ZHANG Jia-Mei LIU Hua WANG Jin CHEN lin ZHANG 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2020年第6期305-312,共8页
Objective To determine the possible association of anti-β1-adrenergic receptors(anti-β1-AR), anti-β2-AR and anti-α1-AR with carvedilol treatment in patients with heart failure(HF). Methods A total of 267 HF patien... Objective To determine the possible association of anti-β1-adrenergic receptors(anti-β1-AR), anti-β2-AR and anti-α1-AR with carvedilol treatment in patients with heart failure(HF). Methods A total of 267 HF patients were prospectively enrolled. Blood samples were measured by an enzyme-linked immunosorbent assay. All of the patients received carvedilol for their HF. Each patient was followed up for six months and their cardiac function was measured. Results The final analysis encompassed 137 patients comprising 65 patients with three autoantibodies(positive group) and 72 patients without all three autoantibodies but with one or two autoantibodies(negative group). The frequency and geometric mean titer of anti-β1-AR, anti-β2-AR, and anti-α1-AR were significantly lower in the group without all three autoantibodies after six months of carvedilol treatment(all P < 0.01;from 100% to 57%, 50%, and 49%, respectively;and from 1: 118, 1: 138, and 1: 130 to 1: 72, 1: 61, and 1: 67, respectively). Furthermore, 28 patients in the positive group demonstrated complete ablation of autoantibodies. In addition, left ventricular remodelling and function was significantly improved by the use of carvedilol combined with the standard treatment regime for six months in the positive group(P < 0.01) when compared to the negative group(P < 0.05). Conclusions Carvedilol treatment significantly decreases frequency and geometric mean titer in patients with all three autoantibodies, even up to complete ablation, and significantly improved cardiac function and remodelling. The effect of carvedilol is probably correlated to the presence of all three autoantibodies. 展开更多
关键词 Adrenergic receptors AUTOANTIBODIES Cardiac function CARVEDILOL Heart failure
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Nucleus accumbens-linked executive control networks mediating reversal learning in tree shrew brain 被引量:2
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作者 Ting-Ting Pan Chao Liu +9 位作者 De-Min Li Bin-Bin Nie Tian-Hao Zhang Wei Zhang Shi-Lun Zhao Qi-Xin Zhou Hua Liu Gao-Hong Zhu lin xu Bao-Ci Shan 《Zoological Research》 SCIE CAS CSCD 2022年第4期528-531,共4页
DEAR EDITOR,Cognitive flexibility is crucial for animal survival but is frequently impaired in neuropsychiatric disorders.Although many brain structures and functional networks are involved in cognitive flexibility,th... DEAR EDITOR,Cognitive flexibility is crucial for animal survival but is frequently impaired in neuropsychiatric disorders.Although many brain structures and functional networks are involved in cognitive flexibility,the neural mechanisms underlying cooperation among specific functional networks remain unclear from a global perspective.In this study,[^(18)F]-fluorodeoxyglucose positron emission tomography(FDG-PET)was performed on 19 male tree shrews after four different visual discrimination tasks,including baseline,learning expert(LE),reversal naive(RN),and reversal expert(RE). 展开更多
关键词 NETWORKS EDIT TREE
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Comparison of efficacy and toxicity between gemcitabine plus cisplatin and plus carboplatin in first-line treatment of advanced non-small cell lung cancer 被引量:1
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作者 Meiqi Shi Bo Shen +4 位作者 Guochun Cao Yun Zeng Guohao Xia Jifeng Feng lin xu 《The Chinese-German Journal of Clinical Oncology》 CAS 2008年第4期196-199,共4页
Objective: To compare the efficacy and toxicity between gemcitabine plus cisplatin and plus carboplatin in first-line treatment of advanced non-small cell lung cancer (NSCLC). Methods: Gemcitabine 1000 mg/m2 iv, d1, 8... Objective: To compare the efficacy and toxicity between gemcitabine plus cisplatin and plus carboplatin in first-line treatment of advanced non-small cell lung cancer (NSCLC). Methods: Gemcitabine 1000 mg/m2 iv, d1, 8; cisplatin 75 mg/m2 iv, d1, or 25 mg/m2 iv, d1-3; carboplatin AUC = 5 iv, d1; repeated every 21 days. Results: All 76 cases were available for objective response. Gemcitabine + cisplatin (GCis) group: among 33 cases, CR 1 case, PR 13 cases, MR 3 cases, SD 7 cases, PD 9 cases, response rate, disease control rate, time to progress (TTP), median survival time (MST) and 1-, 2-year survival rates were 42.42% (14/33), 72.73% (24/33), 5 months, 14 months and 66.67% (22/33), 12.12% (4/33), respectively; Gemcitabine + carboplatin (GCarb) group: among 43 cases, PR 13 cases, MR 11 cases, SD 7 cases, PD 12 cases, the results while comparing with those of GCis group were 30.23% (13/43), 72.09% (31/43), 4 months, 11 months and 48.84% (21/43), 2.33% (1/43), respectively. Among them, only MST between the two groups had significant statistic difference (χ2 = 2.45, P = 0.017). Mild to modest myelo-suppression as well as nausea and vomiting were observed. Conclusion: Both GCis and GCarb regimens had active and well-tolerated toxicity for advanced NSCLC. Cisplatin-based chemotherapy yields a substantial effective advantage over carboplatin-based regimens. Therefore, carboplatin and cisplatin are not equal-active and that cisplatin-based doublet regimens should remain the standard first-line therapy for patients with advanced NSCLC with good performance status. 展开更多
关键词 advanced non-small cell lung cancer (NSCLC) CHEMOTHERAPY GEMCITABINE CISPLATIN CARBOPLATIN
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基于深度学习的发动机声品质预测模型研究
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作者 林旭 梁兴雨 代鹏 《内燃机工程》 CAS CSCD 北大核心 2024年第5期19-27,共9页
为建立发动机辐射噪声品质深度学习预测模型,搭建试验台架采集发动机辐射噪声,计算噪声信号心理学客观参数并进行主观评价试验。采用卷积神经网络(convolution neural net‐work,CNN)提取信号特征,引入长短期记忆网络(long short-term m... 为建立发动机辐射噪声品质深度学习预测模型,搭建试验台架采集发动机辐射噪声,计算噪声信号心理学客观参数并进行主观评价试验。采用卷积神经网络(convolution neural net‐work,CNN)提取信号特征,引入长短期记忆网络(long short-term memory network,LSTM)模型捕获信号长期依赖信息,利用注意力(Attention)机制使模型自动学习关键特征信息。以心理学客观参数为输入,主观评价得分为输出,建立CNN-LSTM-Attention声品质预测模型,引入改进麻雀搜索算法(improved sparrow search algorithm,ISSA)优化模型超参数,提高预测准确性。研究结果表明,ISSA-CNN-LSTM-Attention模型对发动机声品质具有良好的训练性能和预测能力,训练集和测试集的决定系数分别为0.988、0.981,训练集和测试集的平均绝对误差分别为0.204、0.241。该模型能够准确地反映客观评价参数与主观满意度之间的非线性映射关系,为发动机声品质预测提供了新的思路和方法。 展开更多
关键词 发动机 声品质 预测模型 改进麻雀搜索算法
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High specific strength MWCNTs/Mg-14Li-1Al composite prepared by electrophoretic deposition, friction stir processing and cold rolling
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作者 lin xu Jia-hao WANG +4 位作者 Rui-zhi WU Chun-bo ZHANG Hua-jie WU Le-gan HOU Jing-huai ZHANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第12期3914-3925,共12页
Multi-wall carbon nanotubes reinforced Mg-14Li-1Al composite(MWCNTs/Mg-14Li-1Al) was prepared by the processes of electrophoretic deposition, friction stir processing, and cold rolling. The microstructure and mechanic... Multi-wall carbon nanotubes reinforced Mg-14Li-1Al composite(MWCNTs/Mg-14Li-1Al) was prepared by the processes of electrophoretic deposition, friction stir processing, and cold rolling. The microstructure and mechanical properties of the composite were investigated. The results show that, the microhardness of the composite is up to HV 84.4, which is 91.38% higher than that of the as-cast matrix alloy(HV 44.1). The yield strength and ultimate tensile strength of the composite are 259 and 313 MPa, which are 135.45% and 115.86% higher than those of the as-cast matrix alloy, respectively, and a high specific strength of 221.98 k N·m/kg is obtained. In the composite, the MWCNTs serve as nucleation particles during the friction stir processing and cold rolling, causing dynamic recrystallization and grain refinement. Furthermore, MWCNTs hinder the movement of dislocations and transfer the load from the matrix alloy, thus improving the strength. 展开更多
关键词 metal matrix composites Mg-Li alloy multi-wall carbon nanotubes electrophoretic deposition friction stir processing ROLLING strengthening mechanism
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基于多变量灰色系统的乏信息堤防变形短期预测模型
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作者 顾冲时 崔欣然 +4 位作者 顾昊 吴艳 朱明远 林旭 郭瑞 《江苏水利》 2024年第6期1-5,共5页
依据信息模糊和不确定状态下乏信息数据处理理论,提出了一种改进多变量灰色系统的乏信息堤防短期预测模型;引入多变量灰色模型对多测点的沉降变形序列进行拟合,结合混沌粒子群优化算法和分数阶微积分理论,实现了在乏信息条件下对堤防多... 依据信息模糊和不确定状态下乏信息数据处理理论,提出了一种改进多变量灰色系统的乏信息堤防短期预测模型;引入多变量灰色模型对多测点的沉降变形序列进行拟合,结合混沌粒子群优化算法和分数阶微积分理论,实现了在乏信息条件下对堤防多测点变形的短期预测;由对比结果可知,研究提出的模型可行且有效,填补了堤防乏信息处理模型的空白。 展开更多
关键词 乏信息 堤防 多变量灰色模型 分数阶微积分 混沌粒子群算法
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Spatial transcriptomic interrogation of the murine bone marrow signaling landscape
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作者 xue Xiao Conan Juan +7 位作者 Tingsheng Drennon Cedric R.Uytingco Neda Vishlaghi Dimitri Sokolowskei lin xu Benjamin Levi Mimi C.Sammarco Robert J.Tower 《Bone Research》 SCIE CAS CSCD 2023年第4期847-859,共13页
Self-renewal and differentiation of skeletal stem and progenitor cells(SSPCs)are tightly regulated processes,with SSPC dysregulation leading to progressive bone disease.While the application of single-cell RNA sequenc... Self-renewal and differentiation of skeletal stem and progenitor cells(SSPCs)are tightly regulated processes,with SSPC dysregulation leading to progressive bone disease.While the application of single-cell RNA sequencing(scRNAseq)to the bone field has led to major advancements in our understanding of SSPC heterogeneity,stem cells are tightly regulated by their neighboring cells which comprise the bone marrow niche.However,unbiased interrogation of these cells at the transcriptional level within their native niche environment has been challenging.Here,we combined spatial transcriptomics and scRNAseq using a predictive modeling pipeline derived from multiple deconvolution packages in adult mouse femurs to provide an endogenous,in vivo context of SSPCs within the niche.This combined approach localized SSPC subtypes to specific regions of the bone and identified cellular components and signaling networks utilized within the niche.Furthermore,the use of spatial transcriptomics allowed us to identify spatially restricted activation of metabolic and major morphogenetic signaling gradients derived from the vasculature and bone surfaces that establish microdomains within the marrow cavity.Overall,we demonstrate,for the first time,the feasibility of applying spatial transcriptomics to fully mineralized tissue and present a combined spatial and single-cell transcriptomic approach to define the cellular components of the stem cell niche,identify cell-cell communication,and ultimately gain a comprehensive understanding of local and global SSPC regulatory networks within calcified tissue. 展开更多
关键词 LANDSCAPE utilized SPATIAL
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机器旁教学在临床病理科住院医师常规技术教学中的应用
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作者 陈锦 林旭 +4 位作者 吴鸿雁 史炯 牛丰南 黎琪 孙琦 《中国毕业后医学教育》 2024年第9期666-669,共4页
目的探讨临床病理科住院医师开展机器旁教学的可行性。方法对2019年—2021年在南京大学医学院附属鼓楼医院病理科接受住院医师规范化培训的57名住院医师开展机器旁教学,通过考核和问卷调查教学质量和满意度。结果结果显示,机器旁教学可... 目的探讨临床病理科住院医师开展机器旁教学的可行性。方法对2019年—2021年在南京大学医学院附属鼓楼医院病理科接受住院医师规范化培训的57名住院医师开展机器旁教学,通过考核和问卷调查教学质量和满意度。结果结果显示,机器旁教学可巩固住院医师的理论知识、提高解决问题能力,并激发其对病理技术的学习兴趣。结论机器旁教学以自主动手实操为核心,能培养住院医师岗位胜任力和激发创新思维,可成为临床病理科常规技术教学的基本模式。 展开更多
关键词 病理学 机器旁教学 住院医师规范化培训
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遗传学课程思政创新探索与实践
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作者 庞宇 顾志刚 +2 位作者 荣博涵 林旭 杨秀芹 《黑龙江农业科学》 2024年第2期86-90,共5页
遗传学是动物科学和动物生产大类培养的重要专业基础课,针对教学中发现的课程思政问题,以学生为主体,以强化学生“三农”服务意识为目标,利用遗传学蕴含的思想内涵和科学理念为支撑,提出一体双翼的教学模式。通过调整教学目标、重构教... 遗传学是动物科学和动物生产大类培养的重要专业基础课,针对教学中发现的课程思政问题,以学生为主体,以强化学生“三农”服务意识为目标,利用遗传学蕴含的思想内涵和科学理念为支撑,提出一体双翼的教学模式。通过调整教学目标、重构教学设计与教学内容、更新教学方法等措施与东北农业大学“勤奋、求实、奉献、创新”的校风和“艰苦奋斗、自强不息”的东农动科精神有效融合,充分发挥课程育人、文化育人的效果,达到立德树人的目标,激发学生爱党、爱国、爱“三农”的家国情怀,激励学生爱校、爱院的母校情节。培养学生树立客观、严谨的科学态度,引导学生树立正确的“三观”。培养优秀的青年创新人才,助力“三农”事业发展。 展开更多
关键词 遗传学 “三农” 课程思政 教学创新
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Effect of liraglutide combined with basal insulin on blood glucose control, lipid metabolism and oxidative stress in patients with newly diagnosed type 2 diabetes mellitus complicated by obesity
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作者 Fei-Fei He Min-Xi Song +2 位作者 lin xu Rui-Bo Jia Wei Zhang 《Journal of Hainan Medical University》 2018年第2期32-35,共4页
Objective:To investigate the effect of liraglutide combined with basal insulin on blood glucose control, lipid metabolism and oxidative stress in patients with newly diagnosed type 2 diabetes mellitus complicated by o... Objective:To investigate the effect of liraglutide combined with basal insulin on blood glucose control, lipid metabolism and oxidative stress in patients with newly diagnosed type 2 diabetes mellitus complicated by obesity.Methods: A total of 58 patients with newly diagnosed type 2 diabetes mellitus complicated by obesity who were diagnosed and treated in Xi'an No. 4 Hospital between February 2017 and August 2017 were divided into the control group (n=29) who received basal insulin therapy and the liraglutide group (n=29) who received liraglutide combined with basal insulin therapy according to random number table. The differences in the levels of glycolipid metabolism indexes and the contents of oxidative stress indexes were compared between the two groups before and after treatment.Results: Before treatment, the differences in the levels of glycolipid metabolism indexes in peripheral blood and the contents of oxidative stress indexes in serum were not statistically significant between the two groups. After 1 month of treatment, glucose metabolism indexes FBG and HOMA-IR levels in peripheral blood of liraglutide group were lower than those of control group;lipid metabolism indexes TC, TG, ApoB levels in peripheral blood were lower than those of control group, ApoA1 level was higher than those of control group;serum oxidation indexes MDA and LHP contents were lower than those of control group whereas anti-oxidation indexes GSH-Px and T-AOC contents were higher than those of control group.Conclusion: Liraglutide combined with basal insulin therapy can further control the glucolipid metabolism levels and inhibit the systemic oxidative stress response in patients with newly diagnosed type 2 diabetes mellitus complicated by obesity. 展开更多
关键词 Newly diagnosed type 2 diabetes MELLITUS LIRAGLUTIDE BASAL INSULIN Glucose METABOLISM Blood lipid METABOLISM Oxidative stress
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Systematic evaluation of the efficacy and safety of botulinum toxin type A in the treatment of spastic cerebral palsy
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作者 Yu Jiang Gang Liu +5 位作者 Jing-Pei Ren Yi Zhao Hui-Zhong Bai Tuo Zhao lin xu Xiao-Hong Mu 《Life Research》 2023年第2期10-19,共10页
Background:Botulinum toxin type A(BTX-A)is a neuromuscular blocking agent.BTX-A inhibits acetylcholine release,causes neuromuscular transmission impairment,and decreases muscle spasms.Objective:To explore the efficacy... Background:Botulinum toxin type A(BTX-A)is a neuromuscular blocking agent.BTX-A inhibits acetylcholine release,causes neuromuscular transmission impairment,and decreases muscle spasms.Objective:To explore the efficacy and safety of BTX-A injection in the treatment of spastic cerebral palsy through systematic evaluation and to provide a reference for the clinical use of BTX-A.Methods:We used“Cerebral palsy”and“BTX-A”as the subject terms and used a combination of subject terms and free words for the search.We searched 7 databases,including CNKI,Wanfang,VIP,Sinomed,PubMed,Embase,and Web of science.Based on the inclusion and exclusion criteria,we screened the articles by reading their titles,abstracts,and full texts and finally included relevant literature for systematic evaluation.Result:A total of 93 papers were systematically evaluated,revealing that BTX-A injection treatment can effectively reduce muscle tone,increase joint mobility,improve gait and motor posture,and enhance gross motor movements in patients with spastic cerebral palsy.The benefits of BTX-A treatment can be sustained for 3–6 months,with motor ability improvement lasting up to 1 year.Combining BTX-A treatment with rehabilitation or external fixation therapy can enhance its efficacy.However,the effectiveness of BTX-A treatment is influenced by several factors,such as the dosage,number of injections,and patient age.Adverse reactions to BTX-A treatment are typically mild and can be relieved within 1–2 weeks.Conclusion:BTX-A injection is relatively safe but reversible. 展开更多
关键词 spastic cerebral palsy botulinum toxin type A systematic evaluation
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乳制品中有害微生物检测新技术研究进展 被引量:3
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作者 蔡亚洁 乌日娜 +5 位作者 周津羽 刘至立 林旭 丁瑞雪 赵三军 武俊瑞 《食品安全质量检测学报》 CAS 2024年第1期41-47,共7页
乳及乳制品因营养丰富而成为沙门氏菌(Salmonella)、金黄色葡萄球菌(Staphylococcus aureus)、单核细胞增生李斯特菌(Listeria monocytogenes)、克罗诺杆菌(Cronobacter)和蜡样芽孢杆菌(Bacillus cereus)等多种有害微生物的天然培养基,... 乳及乳制品因营养丰富而成为沙门氏菌(Salmonella)、金黄色葡萄球菌(Staphylococcus aureus)、单核细胞增生李斯特菌(Listeria monocytogenes)、克罗诺杆菌(Cronobacter)和蜡样芽孢杆菌(Bacillus cereus)等多种有害微生物的天然培养基,近年来,乳制品安全事件屡见不鲜,已成为食品安全研究热点。传统检测技术因检测周期长且准确率低,无法满足乳制品安全检测高通量、时间短的需求。随着分子生物学和免疫学的发展,重组酶介导等温核酸扩增(recombinase aided amplification,RAA)技术、环介导等温扩增(loop-mediated isothermal amplification,LAMP)技术、纳米探针技术和三磷酸腺苷(adenosine triphosphate,ATP)发光技术等因灵敏度高、检测时间短被逐渐应用于乳品安全检测。鉴于此,本文结合国内外相关研究,从乳制品安全角度出发,重点介绍了上述技术在乳制品安全检测中的研究现状,并进行了分析讨论,以期对未来乳制品有害微生物快速检测技术的发展提供思路。 展开更多
关键词 乳制品 有害微生物 检测技术 食品安全
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两种内固定治疗骨盆前环骨折的疗效比较 被引量:1
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作者 徐练 林旭 +4 位作者 吴超 谭伦 钟泽莅 曾俊 胡海刚 《临床骨科杂志》 2024年第3期390-394,共5页
目的比较经皮空心螺钉内固定与皮下钉棒系统内固定(INFIX)治疗骨盆前环骨折的疗效。方法将43例骨盆前环骨折患者根据内固定方式不同分为经皮空心螺钉组(19例)和INFIX组(24例)。记录手术时间、术中出血量、术中透视次数、术后下地时间、... 目的比较经皮空心螺钉内固定与皮下钉棒系统内固定(INFIX)治疗骨盆前环骨折的疗效。方法将43例骨盆前环骨折患者根据内固定方式不同分为经皮空心螺钉组(19例)和INFIX组(24例)。记录手术时间、术中出血量、术中透视次数、术后下地时间、骨折复位质量、骨折愈合时间以及并发症发生情况,采用Matta影像学标准评价骨折复位质量,采用Majeed评分系统评价临床疗效。结果患者均获得随访,时间12~24个月。手术时间、术后下地时间、骨折复位质量优良率、骨折愈合时间两组比较差异均无统计学意义(P>0.05)。术中出血量经皮空心螺钉组少于INFIX组(P<0.05)。术中透视次数经皮空心螺钉组多于INFIX组(P<0.05)。并发症发生率经皮空心螺钉组低于INFIX组(P<0.05)。末次随访时,两组疗效优良率比较差异无统计学意义(P>0.05)。结论采用经皮空心螺钉内固定与INFIX治疗骨盆前环骨折临床疗效相当,经皮空心螺钉内固定具有术中出血量少、并发症发生率低的优点,但存在术中透视次数较多的不足。 展开更多
关键词 骨盆前环骨折 微创手术 经皮空心螺钉 经皮钉棒系统
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The cuproptosis-related gene signature predicts clinical diagnosis,prognosis,and immune microenvironment for glioblastoma multiforme
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作者 Gang Liu Li Wang +7 位作者 Zhen-Zhen Pei Ji-Zhou Yang Bo-Wen Deng Sheng-Yuan Jiang Rui-Qin Yu Hui-Zhong Bai lin xu Xiao-Hong Mu 《Precision Medicine Research》 2022年第3期31-43,共13页
Background:Glioblastoma multiforme(GBM)is a kind of extremely malignant brain tumor with a poor prognosis.The problem of high recurrence rates and drug resistance has been difficult to solve.Cuproptosis is a newly dis... Background:Glioblastoma multiforme(GBM)is a kind of extremely malignant brain tumor with a poor prognosis.The problem of high recurrence rates and drug resistance has been difficult to solve.Cuproptosis is a newly discovered mode of cell death,which is related to the occurrence and progression of GBM.Methods:We screened TCGA and GEO databases to comprehensively analyze the regulation patterns of cuproptosis in GBM based on cuproptosis-related genes(CRGs).The expression levels,copy number variants(CNV),and mutation of CRGs in GBM were probed.Different regulation patterns of cuproptosis were identified and performed GSVA analysis.Then we constructed a prognostic model based on genes that were differentially expressed in all regulation patterns.The immune cells and tumor microenvironment in different risk groups were compared.Finally,the potential therapeutic drugs were predicted.Results:We identified two key differentially expressed genes under different regulation patterns of cuproptosis and constructed a risk prognostic model.There were significant differences in immune infiltration and drug sensitivity between high and low risk groups.Conclusions:We established a risk prognostic model based on two genes and explored its relationship with immune characteristics,which might help to assess the prognosis and treatment sensitivity to immune and targeted therapy of GBM patients. 展开更多
关键词 cuproptosis glioblastoma multiforme PROGNOSIS immune microenvironment drug sensitivity
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The difference of endothelial adherence between the clinical and commensal strains of Staphylococcus epidermidis
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作者 lin xu LI WANG +3 位作者 JIAN PING WANG MIN LI YUAN LU QIAN GAO 《Journal of Microbiology and Immunology》 2007年第1期17-22,共6页
Staphylococcus epidermidis is one of the leading pathogens of nosocomial infections. Twenty- eight strains of biofilm-negative Staphylococcus epidermidis, of which thirteen strains considered as the clinical strains w... Staphylococcus epidermidis is one of the leading pathogens of nosocomial infections. Twenty- eight strains of biofilm-negative Staphylococcus epidermidis, of which thirteen strains considered as the clinical strains were isolated from catheters, blood and urine of patients in Huashan Hospital (Shanghai, China) and fifteen strains considered as commensal strains were isolated from the skin of healthy students who had no contact with hospitals in recent half year, were investigated for the adherence to human umbilical vein endothelial cell line ECV304 and human cervical adenocarcinoma cell line Hela, respectively. Our results showed that the clinical strains were much more adhesive to both cells than commensal ones. The endothelial adherence may be a virulence factor associated with this bacterial pathogenesis. 展开更多
关键词 Staphylococcus epidermidis Endothelial adherence Biofilm
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单侧椎板开窗自制夯实器椎体后壁复位减压治疗椎管占位胸腰椎爆裂性骨折的临床研究
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作者 王翔宇 曹林虎 +4 位作者 谭伦 林旭 吴超 胡海刚 吴春宝 《创伤外科杂志》 2024年第2期130-137,共8页
目的探讨单侧椎板开窗自制夯实器椎体后壁复位减压治疗椎管占位胸腰椎爆裂性骨折(TLBF)的安全性和有效性。方法前瞻性研究2016年12月—2018年12月重庆市中医骨科医院和自贡市第四人民医院收治TLBF患者67例,男性48例,女性19例;年龄19~63... 目的探讨单侧椎板开窗自制夯实器椎体后壁复位减压治疗椎管占位胸腰椎爆裂性骨折(TLBF)的安全性和有效性。方法前瞻性研究2016年12月—2018年12月重庆市中医骨科医院和自贡市第四人民医院收治TLBF患者67例,男性48例,女性19例;年龄19~63岁,平均41.1岁。根据椎管减压方式不同分为实验组(33例)和对照组(34例)。实验组采用后正中入路单侧椎板有限开窗、自制夯实器对椎体后壁骨折进行夯实复位减压内固定融合术,对照组采用后正中入路全椎板切除减压复位内固定融合术。实验组男性23例,女性10例;年龄22~63岁,平均40.9岁;道路交通伤13例,高处坠落伤18例,其他2例;脊髓损伤Frankel分级:C级13例、D级12例、E级8例。对照组男性25例,女性9例;年龄19~59岁,平均41.2岁;道路交通伤12例,高处坠落伤19例,其他3例;脊髓损伤Frankel分级:C级12例、D级13例、E级9例。比较两组患者手术时间、术中出血量,术前、术后1周及末次随访伤椎前缘压缩比、伤椎Cobb角、椎管矢状径比值,术前和末次随访脊髓神经功能Frankel分级,并随访观察内固定相关并发症。结果实验组术中出血量少于对照组[(163.3±44.6)mL vs.(229.4±53.0)mL,P<0.001]。实验组术前较术后1周、末次随访伤椎前缘压缩比小[(51.8±10.1)%vs.(90.0±3.4)%vs.(88.8±3.5)%]、伤椎Cobb角大[(20.7±2.8)°vs.(3.4±1.5)°vs.(3.8±1.8)°]、椎管矢状径比值小[(43.4±9.5)%vs.(91.8±2.9)%vs.(93.3±4.7)%],术前较末次随访脊髓神经功能Frankel分级差[(C级13、D级12、E级8)vs.(C级3、D级5、E级25)],差异均有统计学意义(P<0.05);对照组术前较术后1周、末次随访伤椎前缘压缩比小[(51.4±9.3)%vs.(88.8±3.0)%、(51.4±9.3)%vs.(87.4±3.4)%]、伤椎Cobb角大[(21.7±3.6)°vs.(3.9±1.8)°vs.(4.0±2.0)°]、椎管矢状径比值小[(43.2±8.6)%vs.(91.5±2.7)%vs.(92.6±4.2)%],术前较末次随访脊髓神经功能Frankel分级差[(C级12、D级13、E级9)vs.(C级4、D级5、E级25)],差异均有统计学意义(P<0.05);两组患者组间手术时间,术前、术后1周、末次随访伤椎前缘压缩比、伤椎Cobb角、椎管矢状径比值,术前、末次随访脊髓神经功能Frankel分级比较差异均无统计学意义(P>0.05)。结论单侧椎板开窗自制夯实器减压和传统全椎板切除减压治疗TLBF,伤椎前缘压缩比、伤椎Cobb角、椎管矢状径比值和脊髓神经功能Frankel分级均明显改善,而椎板单侧开窗减压术中出血量更少。 展开更多
关键词 胸腰椎爆裂性骨折 后路 开窗减压 椎体后壁骨折 夯实器
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新生代亚洲季风的演化过程
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作者 林旭 吴中海 +3 位作者 董延钰 谢远云 刘海金 李兆宁 《地质力学学报》 CSCD 北大核心 2024年第4期673-690,共18页
陆地和海洋热容量差异会引起风向和降水发生季节性反转形成季风气候。亚洲是世界上季风气候最典型的区域,同时也有最多的受季风气候影响的人口。季风带来的强降水容易诱发多种次生灾害,严重影响着区域内人类社会生产、居住的安全,因而... 陆地和海洋热容量差异会引起风向和降水发生季节性反转形成季风气候。亚洲是世界上季风气候最典型的区域,同时也有最多的受季风气候影响的人口。季风带来的强降水容易诱发多种次生灾害,严重影响着区域内人类社会生产、居住的安全,因而认识亚洲季风的形成过程至关重要。利用将古论今的地学思想,文章旨在阐述亚洲季风的组成,列举影响亚洲季风形成、演化的主要因素,总结亚洲关键地点的沉积记录显示的南亚季风和东亚季风的演化期次。结果表明,在古近纪,印度板块与亚洲大陆南缘发生碰撞,改变了亚洲的海陆分布,导致青藏高原发生初始隆升,南亚和东亚均出现季风性气候。但此时的东亚地区依然主要受行星风系的控制,东亚季风处于孕育阶段,仅呈条带状局部分布在华南板块的南缘,而南亚季风的覆盖面积相对广泛。这可能主要是因为东亚地区的边缘海打开时间明显要晚于南亚地区海陆分布出现的时间。但随着青藏高原在中新世整体隆升并接近现今的海拔高度,亚洲季风全面进入增强阶段,强烈影响区域内的地质演化过程。自中新世中期以来,由于受控于青藏高原隆升、南北极冰盖的发育,亚洲季风经历了多期次的稳定发展阶段。研究成果为科学合理利用季风开展亚洲系统地球科学研究提供了参考。 展开更多
关键词 亚洲季风 东亚季风 南亚季风 青藏高原 新生代
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基于RNA-seq的生孢噬纤维菌新转录本预测及生物信息学分析
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作者 宋祥和 林旭 +2 位作者 杨帆 陈晓艺 李宪臻 《大连工业大学学报》 CAS 2024年第5期341-348,共8页
利用RNA-seq技术,对不同碳源条件下培养的生孢噬纤维菌CX11进行新转录本预测,实时荧光定量PCR结果表明测序数据可信度较高。共发掘新转录本1298个,其中371个新转录本在不同碳源比较组合中差异表达(p<0.05),差异转录本数目与碳源的复... 利用RNA-seq技术,对不同碳源条件下培养的生孢噬纤维菌CX11进行新转录本预测,实时荧光定量PCR结果表明测序数据可信度较高。共发掘新转录本1298个,其中371个新转录本在不同碳源比较组合中差异表达(p<0.05),差异转录本数目与碳源的复杂度成正相关。共有19个新转录本在滤纸和葡萄糖比较组合中的差异倍数超过8倍,且在其他比较组合中差异倍数明显降低,推测这些新转录本与滤纸的前期降解密切相关。GO功能分析显示437个新转录本获得注释,有机物代谢过程、碳水化合物衍生物结合、氧化还原酶活性、水解酶活性等功能显著富集,原位酶活测定结果表明水解酶活性富集合理可信。KEGG通路分析表明,共有296个新转录本富集到氨基酸生物合成、次级代谢产物生物合成、碳代谢、氧化磷酸化、ABC转运蛋白、群体感应等30条代谢通路中。 展开更多
关键词 生孢噬纤维菌 转录组测序 新转录本 生物信息学
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