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基于GCS评分的Nomogram图预测急性脑出血后卒中相关性肺炎的发生风险 被引量:1
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作者 赵珂 许春阳 +4 位作者 王运良 苗旺 王永乐 王志愿 李文 《中国实用神经疾病杂志》 2024年第4期436-441,共6页
目的 通过构建Nomogram预测模型,探讨急性脑出血后发生卒中相关性肺炎(SAP)的危险因素。方法 回顾性分析2018-01—2022-12平顶山学院第一附属医院神经外科、重症医学科及神经重症的1 050例急性脑出血患者的临床资料,先根据GCS评分进行... 目的 通过构建Nomogram预测模型,探讨急性脑出血后发生卒中相关性肺炎(SAP)的危险因素。方法 回顾性分析2018-01—2022-12平顶山学院第一附属医院神经外科、重症医学科及神经重症的1 050例急性脑出血患者的临床资料,先根据GCS评分进行感染率的分层分析,然后运用组间差异性比较及多因素Logistic回归分析筛选SAP的独立危险因素,应用R语言构建Nomogram预测模型,并对构建的模型进行评价。结果 急性脑出血患者中SAP发生率为35.9%,其中GCS评分3~8分患者为77.21%,GCS评分9~12分患者为30.81%,GCS评分13~15分患者为6.50%,各组间感染率差异有统计学意义(P<0.05)。多因素Logistic回归显示,年龄、GCS评分、入院时随机血糖、淋巴细胞绝对值及手术治疗均为SAP独立危险因素,以这5个危险因素构建的Nomogram预测模型可帮助临床医师预测急性脑出血后SAP发生风险,具有较高的准确性和临床适用性。结论 基于GCS评分构建的Nomogram预测模型能够在疾病早期阶段准确高效地对急性脑出血患者发生SAP的风险进行分层,识别出易发生SAP患者的高风险人群,从而采取有针对性的干预措施。 展开更多
关键词 急性脑出血 卒中相关性肺炎 危险因素 GCS评分 列线图 Nomogram预测模型
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How can technology and efficiency alleviate the dilemma of economic growth and carbon emissions in China's industrial economy? A metafrontier decoupling decomposition analysis
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作者 miao wang Chao Feng 《Petroleum Science》 SCIE EI CAS CSCD 2024年第2期1415-1428,共14页
This paper attempts to explore the decoupling relationship and its drivers between industrial economic increase and energy-related CO_(2) emissions(ICE). Firstly, the decoupling relationship was evaluated by Tapio ind... This paper attempts to explore the decoupling relationship and its drivers between industrial economic increase and energy-related CO_(2) emissions(ICE). Firstly, the decoupling relationship was evaluated by Tapio index. Then, based on the DEA meta-frontier theory framework which taking into account the regional and industrial heterogeneity and index decomposition method, the driving factors of decoupling process were explored mainly from the view of technology and efficiency. The results show that during2000-2019, weak decoupling was the primary state. Investment scale expansion was the largest reason hindering decoupling process of industrial increase from ICE. Both energy saving and production technology achieved significant progress, which facilitated the decoupling process. Simultaneously, the energy technology gap and production technology gap among regions have been narrowed, and played a role in promoting decoupling process. On the contrary, both scale economy efficiency and pure technical efficiency have inhibiting effects on decoupling process. The former indicates that the scale economy of China's industry was not conducive to improve energy efficiency and production efficiency, while the latter indicates that resource misallocation problem may exist in both energy market and product market. 展开更多
关键词 China's industrial sector Decoupling process Meta-frontier DEA Index decomposition method Driving factors
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Advantageous properties of halide perovskite quantum dots towards energy-efficient sustainable applications
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作者 Qian Zhao Shuo wang +9 位作者 Young-Hoon Kim Shekhar Mondal Qingqing miao Simiao Li Danya Liu miao wang Yaxin Zhai Jianbo Gao Abhijit Hazarika Guo-Ran Li 《Green Energy & Environment》 SCIE EI CAS CSCD 2024年第6期949-965,共17页
As lead halide perovskite(LHP)semiconductors have shown tremendous promise in many application fields,and particularly made strong impact in the solar photovoltaic area,low dimensional quantum dot forms of these perov... As lead halide perovskite(LHP)semiconductors have shown tremendous promise in many application fields,and particularly made strong impact in the solar photovoltaic area,low dimensional quantum dot forms of these perovskites are showing the potential to make distinct marks in the fields of electronics,optoelectronics and photonics.The so-called perovskite quantum dots(PQDs)not only possess the most important features of LHP materials,i.e.,the unusual high defect tolerance,but also demonstrate clear quantum size effects,along with exhibiting desirable optoelectronic properties such as near perfect photoluminescent quantum yield,multiple exciton generation and slow hot-carrier cooling.Here,we review the advantageous properties of these nanoscale perovskites and survey the prospects for diverse applications which include lightemitting devices,solar cells,photocatalysts,lasers,detectors and memristors,emphasizing the distinct superiorities as well as the challenges. 展开更多
关键词 Perovskite quantum dot LIGHT-EMITTING Detector Laser Solar cell
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Effect of cognitive training on brain dynamics
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作者 吕贵阳 徐天勇 +3 位作者 陈飞燕 朱萍 王淼 何国光 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第2期529-536,共8页
The human brain is highly plastic.Cognitive training is usually used to modify functional connectivity of brain networks.Moreover,the structures of brain networks may determine its dynamic behavior which is related to... The human brain is highly plastic.Cognitive training is usually used to modify functional connectivity of brain networks.Moreover,the structures of brain networks may determine its dynamic behavior which is related to human cognitive abilities.To study the effect of functional connectivity on the brain dynamics,the dynamic model based on functional connections of the brain and the Hindmarsh–Rose model is utilized in this work.The resting-state fMRI data from the experimental group undergoing abacus-based mental calculation(AMC)training and from the control group are used to construct the functional brain networks.The dynamic behavior of brain at the resting and task states for the AMC group and the control group are simulated with the above-mentioned dynamic model.In the resting state,there are the differences of brain activation between the AMC group and the control group,and more brain regions are inspired in the AMC group.A stimulus with sinusoidal signals to brain networks is introduced to simulate the brain dynamics in the task states.The dynamic characteristics are extracted by the excitation rates,the response intensities and the state distributions.The change in the functional connectivity of brain networks with the AMC training would in turn improve the brain response to external stimulus,and make the brain more efficient in processing tasks. 展开更多
关键词 brian dynamics functional brain networks cognitive training abacus-based mental calculation
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LncRNA MEG3 Inhibits the Epithelial-mesenchymal Transition of Bladder Cancer Cells through the Snail/E-cadherin Axis
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作者 Liang wang Ping wang +5 位作者 Bing LIU Hui ZHANG Cheng-cheng WEI Ming XIONG Gang LUO miao wang 《Current Medical Science》 SCIE CAS 2024年第4期726-734,共9页
Objective This study aimed to investigate the role of the long noncoding RNA(lncRNA)maternally expressed gene 3(MEG3)in the epithelial-mesenchymal transition(EMT)of bladder cancer cells and the potential mechanisms.Me... Objective This study aimed to investigate the role of the long noncoding RNA(lncRNA)maternally expressed gene 3(MEG3)in the epithelial-mesenchymal transition(EMT)of bladder cancer cells and the potential mechanisms.Methods Cell invasion,migration,and wound healing assays were conducted to assess the effects of MEG3 on the invasive and migratory capabilities of bladder cancer cells.The expression levels of E-cadherin were measured using Western blotting,RT-qPCR,and dual luciferase reporter assays.RNA immunoprecipitation and pull-down assays were performed to investigate the interactions between MEG3 and its downstream targets.Results MEG3 suppressed the invasion and migration of bladder cancer cells and modulated the transcription of E-cadherin.The binding of MEG3 to the zinc finger region of the transcription factor Snail prevented its ability to transcriptionally repress E-cadherin.Additionally,MEG3 suppressed the phosphorylation of extracellular regulated protein kinase(ERK),c-Jun N-terminal kinase(JNK),and P38,thereby decreasing the expression of Snail and stimulating the expression of E-cadherin.Conclusion MEG3 plays a vital role in suppressing the EMT in bladder cancer cells,indicating its potential as a promising therapeutic target for the treatment of bladder cancer. 展开更多
关键词 long noncoding RNA bladder cancer maternally expressed gene 3 epithelial-mesenchymal transition SNAIL
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近距离采空区下回采巷道分区支护方案设计及应用
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作者 苗旺 《煤》 2024年第11期97-100,共4页
极近距离煤层下行开采期间,受上层煤采动影响,下层煤回采巷道易出现顶板破碎、支护困难等问题。文章以隆安煤业11_下302工作面为工程实例,采用现场调研、钻孔窥视、工程类比、工业应用等方法,进行近距离采空区下回采巷道矿压特征、顶板... 极近距离煤层下行开采期间,受上层煤采动影响,下层煤回采巷道易出现顶板破碎、支护困难等问题。文章以隆安煤业11_下302工作面为工程实例,采用现场调研、钻孔窥视、工程类比、工业应用等方法,进行近距离采空区下回采巷道矿压特征、顶板可锚性、分区支护方案研究,结果表明,常规锚网索无法控制巷道围岩的过度变形、破坏,厚度1~5.5 m的层间岩层具有良好的可锚性,根据层间岩层厚度设计巷道分区支护方案并在11_下302运输巷应用,改进方案条件下,巷道变形量在设计允许的合理范围内,可满足11_下302工作面生产的需求。 展开更多
关键词 极近距离煤层 可锚性 分区支护
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企业数字化转型如何降低第一类代理成本?——基于内部控制和外部治理的双重视角 被引量:4
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作者 苗旺 吴杨 李锐 《科学与管理》 2023年第6期47-55,共9页
降低股东和管理层间的第一类代理成本是公司治理领域的重要问题,但在数字经济时代,数字化转型如何降低第一类代理成本还没有一致的理论解释。为此,以2013—2020年中国A股上市公司为研究样本,从内部控制和外部治理视角探究企业数字化转... 降低股东和管理层间的第一类代理成本是公司治理领域的重要问题,但在数字经济时代,数字化转型如何降低第一类代理成本还没有一致的理论解释。为此,以2013—2020年中国A股上市公司为研究样本,从内部控制和外部治理视角探究企业数字化转型与第一类代理成本的关系。结果表明:数字化转型能够显著降低第一类代理成本,稳健性检验支持该结论。机制分析表明,内部控制水平和媒体关注是数字化转型降低第一类代理成本的部分中介。另外,数字经济发展水平越高,企业数字化转型对第一类代理成本的抑制作用越明显。研究结论丰富了数字化转型在经济效果方面的理论研究,对公司治理研究也提供了新的参考。 展开更多
关键词 数字化转型 第一类代理成本 内部控制 外部治理 数字经济
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重症吉兰-巴雷综合征患者远期预后评估及相关因素分析
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作者 黄培培 苗旺 +4 位作者 王亚婷 高林 张齐 何霞 滕军放 《中国实用神经疾病杂志》 2023年第11期1331-1337,共7页
目的评估重症吉兰-巴雷综合征(GBS)患者远期运动功能、日常生活、回归社会状况,分析影响预后的相关性因素,并建立预后不良风险预测模型,为预测重症GBS远期预后提供参考。方法回顾性分析2014-01—2021-08郑州大学第一附属医院神经重症病... 目的评估重症吉兰-巴雷综合征(GBS)患者远期运动功能、日常生活、回归社会状况,分析影响预后的相关性因素,并建立预后不良风险预测模型,为预测重症GBS远期预后提供参考。方法回顾性分析2014-01—2021-08郑州大学第一附属医院神经重症病区收治的93例重症GBS患者临床资料;至2022-08成功随访85例,分别于出院后3个月、6个月、1 a进行Hughes评分,对生活质量进行Barthel指数评定量表(BI)评分,并对社会功能恢复及自身感受情况评估。以随访1 a时Hughes评分进行分组,分为预后良好组69例(Hughes评分0~2分),预后不良组16例(Hughes评分3~6分),2组间进行单因素和多因素Logistic回归分析,建立预后不良列线图预测模型并进行内部验证,通过绘制校准曲线、决策曲线来评估预后不良预测模型对患者预后不良的预测价值。并对患者恢复独立行走所需时间相关因素进行K-M生存曲线分析。结果(1)入住神经ICU患者有感染诱因者占57.0%,合并基础疾病者占53.8%,入住原因82.8%和呼吸系统风险有关;67.7%患者应用呼吸机,44.4%患者辅助通气时长超过2周;主要治疗方案中,单纯免疫球蛋白治疗占63.4%,24.7%患者应用免疫球蛋白联合其他治疗。(2)重症GBS患者1 a病死率为10.5%,致残率为8.2%。与预后良好组相比,预后不良组患者年龄较大、起病急、病情进展快、瘫痪程度重。其中年龄、发病至ICU时间是重症GBS患者预后不良的相关因素。(3)建立2个因素风险预测模型,并以列线图展示,重症GBS患者预后的校准曲线表明,预测模型与理想模型间具有良好的一致性。决策曲线显示预测模型具有良好的临床应用价值。(4)K-M生存曲线分析表明,年龄与恢复独立行走所需时间无关,恢复行走所需时间与是否机械通气相关,机械通气患者总体需要更长的恢复时间。(5)79.6%的患者日常生活不受影响,48.6%恢复正常工作,10.8%患者存在焦虑抑郁。结论重症GBS患者病死率高,高龄及发病至ICU时间短(起病急、病情进展快)是影响预后的因素,基于年龄及发病至ICU时间两个指标建立的风险预测模型对预后不良有一定的预测能力。恢复独立行走所需时间与是否机械通气相关,与年龄无关。大多数生存患者恢复正常日常生活,近半数患者恢复社会工作,约1/10患者存在抑郁焦虑症状。 展开更多
关键词 重症吉兰-巴雷综合征 预后 运动功能 社会功能 年龄 机械通气
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电流辅助下CoFeCrNiCuTi_(2)高熵合金钎焊SiC陶瓷接头组织与性能
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作者 刘一贺 王刚 +2 位作者 周小兵 王秒 王微 《材料工程》 EI CAS CSCD 北大核心 2023年第9期140-147,共8页
采用电流辅助连接技术,以CoFeCrNiCuTi_(2)高熵合金为连接层材料,在1125℃的温度下,实现了SiC陶瓷的快速钎焊,提高了连接效率的同时保证了元素的充分扩散,系统研究了钎焊温度对连接接头界面微观结构和力学性能的影响。结果表明:所获得... 采用电流辅助连接技术,以CoFeCrNiCuTi_(2)高熵合金为连接层材料,在1125℃的温度下,实现了SiC陶瓷的快速钎焊,提高了连接效率的同时保证了元素的充分扩散,系统研究了钎焊温度对连接接头界面微观结构和力学性能的影响。结果表明:所获得的钎焊接头无明显缺陷,焊缝组织主要由高熵FCC相、TiC相、Cr_(23)C_(6)相组成。界面致密的TiC反应层的形成在一定程度上抑制了高熵合金的分解和金属间化合物的生成,并缓解了SiC基体界面与高熵合金钎料之间的热应力。同时,由于高熵合金钎料的迟滞扩散效应,焊缝中心主体钎料仍保持高熵合金的FCC结构。力学性能测试表明:钎焊接头强度随钎焊温度升高呈先降低后增大的变化趋势。当连接温度为1125℃时,碳化硅接头获得最大弯曲强度,达到37 MPa,高于普通镍基钎料约21.3 MPa。 展开更多
关键词 钎焊 SIC 高熵合金 连接 电场辅助烧结技术
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不同高温天频率对截形叶螨体内糖类物质含量变化的影响 被引量:2
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作者 张洁 廖婷璐 +3 位作者 谢康 苗旺 俞才兰 宋丽雯 《甘肃农业大学学报》 CAS CSCD 2023年第6期110-116,共7页
【目的】明确截形叶螨不同品系应对高温时的生理机制。【方法】采用生理生化法,研究不同高温天频率(高温天数∶常温天数)1d∶3d、2d∶2d、3d∶1d胁迫后,截形叶螨敏感品系(SS)和抗哒螨灵品系(Py-R)不同发育阶段体内糖类物质含量的变化。... 【目的】明确截形叶螨不同品系应对高温时的生理机制。【方法】采用生理生化法,研究不同高温天频率(高温天数∶常温天数)1d∶3d、2d∶2d、3d∶1d胁迫后,截形叶螨敏感品系(SS)和抗哒螨灵品系(Py-R)不同发育阶段体内糖类物质含量的变化。【结果】经历不同高温频率后,随着高温天数的增加,截形叶螨抗哒螨灵品系(Py-R)在卵期和成螨期体内可溶性糖含量呈现先上升后下降的趋势,在若螨期一直呈下降趋势,而敏感品系正好与之相反;但是两个品系的海藻糖含量呈上升趋势。而且,在卵期阶段,糖类物质的增幅和降幅最大,成螨期最小,若螨期介于二者之间,但抗哒螨灵品系在成螨期的增幅最小,变化最为平缓。此外,抗哒螨灵品系(Py-R)体内的糖物质含量上升速率显著高于敏感品系(SS)。【结论】截形叶螨在高温胁迫下,通过积累其体内的含糖物质,提高了自身的耐热性,且抗哒螨灵品系对高温的适应性要高于敏感品系。 展开更多
关键词 截形叶螨 高温频率 可溶性糖 糖原 海藻糖
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年龄对Ⅳ期直肠癌患者预后及远处转移的影响分析
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作者 邱叶 钟福平 +3 位作者 王淼 黄天河 梁文静 魏永长 《数理医药学杂志》 CAS 2023年第2期118-126,共9页
目的 探讨Ⅳ期直肠癌患者年龄与转移及预后的关系。方法 将SEER数据库中纳入的4 269例Ⅳ期直肠癌患者按照年龄分为年轻组(<50岁),中老年组(≥50岁)。采用Kaplan-Meier法绘制生存曲线。通过Cox回归分析影响患者预后的因素。采用Logis... 目的 探讨Ⅳ期直肠癌患者年龄与转移及预后的关系。方法 将SEER数据库中纳入的4 269例Ⅳ期直肠癌患者按照年龄分为年轻组(<50岁),中老年组(≥50岁)。采用Kaplan-Meier法绘制生存曲线。通过Cox回归分析影响患者预后的因素。采用Logistic回归分析年龄对IV直肠癌患者转移部位的影响。结果 与年轻组相比,中老年组更易出现肝转移[OR=1.30,95%CI(1.05,1.61),P=0.016],但发生肺转移的风险更低[OR=0.81,95%CI(0.68,0.95),P=0.011]。而其他转移部位(骨、脑、多部位),两组间的差异无统计学意义。生存分析提示,年轻组生存率优于中老年组(P<0.001),中位生存时间分别为28个月、18个月。且当患者发生仅肝转移、仅肺转移及多部位转移时,年轻组预后仍较中老年组好(P <0.05)。多因素分析表明年龄是影响Ⅳ直肠癌患者的独立预后因素,种族、T分期、N分期、化疗、放疗以及手术也是Ⅳ期直肠癌患者的独立预后因素。结论 年龄是影响Ⅳ直肠癌患者转移部位及预后的重要因素。 展开更多
关键词 Ⅳ期直肠癌 预后 转移 年龄 SEER数据库 生存分析
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Monoclonal antibody targeting mu-opioid receptor attenuates morphine tolerance via enhancing morphine-induced receptor endocytosis
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作者 Jia-Jia Zhang Chang-Geng Song +11 位作者 miao wang Gai-Qin Zhang Bin wang Xi Chen Peng Lin Yu-Meng Zhu Zhi-Chuan Sun Ya-Zhou wang Jian-Li Jiang Ling Li Xiang-Min Yang Zhi-Nan Chen 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2023年第10期1135-1152,共18页
Morphine is a frequently used analgesic that activates the mu-opioid receptor(MOR),which has prominent side effects of tolerance.Although the inefficiency of morphine in inducing the endocytosis of MOR underlies the d... Morphine is a frequently used analgesic that activates the mu-opioid receptor(MOR),which has prominent side effects of tolerance.Although the inefficiency of morphine in inducing the endocytosis of MOR underlies the development of morphine tolerance,currently,there is no effective therapy to treat morphine tolerance.In the current study,we aimed to develop a monoclonal antibody(mAb)precisely targeting MOR and to determine its therapeutic efficacy on morphine tolerance and the underlying molecular mechanisms.We successfully prepared a mAb targeting MOR,named 3A5C7,by hybridoma technique using a strategy of deoxyribonucleic acid immunization combined with cell immunization,and identified it as an immunoglobulin G mAb with high specificity and affinity for MOR and binding ability to antigens with spatial conformation.Treatment of two cell lines,HEK293T and SH-SY5Y,with 3A5C7 enhanced morphine-induced MOR endocytosis via a G protein-coupled receptor kinase 2(GRK2)/b-arrestin2-dependent mechanism,as demonstrated by immunofluorescence staining,flow cytometry,Western blotting,coimmunoprecipitation,and small interfering ribonucleic acid(siRNA)-based knockdown.This mAb also allowed MOR recycling from cytoplasm to plasma membrane and attenuated morphine-induced phosphorylation of MOR.We established an in vitro morphine tolerance model using differentiated SH-SY5Y cells induced by retinoic acid.Western blot,enzyme-linked immunosorbent assays,and siRNA-based knockdown revealed that 3A5C7 mAb diminished hyperactivation of adenylate cyclase,the in vitro biomarker of morphine tolerance,via the GRK2/b-arrestin2 pathway.Furthermore,in vivo hotplate test demonstrated that chronic intrathecal administration of 3A5C7 significantly alleviated morphine tolerance in mice,and withdrawal jumping test revealed that both chronic and acute 3A5C7 intrathecal administration attenuated morphine dependence.Finally,intrathecal electroporation of silencing short hairpin RNA illustrated that the in vivo anti-tolerance and anti-dependence efficacy of 3A5C7 was mediated by enhanced morphine-induced MOR endocytosis via GRK2/b-arrestin2 pathway.Collectively,our study provided a therapeutic mAb,3A5C7,targeting MOR to treat morphine tolerance,mediated by enhancing morphine-induced MOR endocytosis.The mAb 3A5C7 demonstrates promising translational value to treat clinical morphine tolerance. 展开更多
关键词 Morphine tolerance Mu-opioid receptor ENDOCYTOSIS Monoclonal antibody Physical dependence
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EM-Gaze:eye context correlation and metric learning for gaze estimation
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作者 Jinchao Zhou Guoan Li +3 位作者 Feng Shi Xiaoyan Guo Pengfei Wan miao wang 《Visual Computing for Industry,Biomedicine,and Art》 EI 2023年第1期97-108,共12页
In recent years,deep learning techniques have been used to estimate gaze-a significant task in computer vision and human-computer interaction.Previous studies have made significant achievements in predicting 2D or 3D ... In recent years,deep learning techniques have been used to estimate gaze-a significant task in computer vision and human-computer interaction.Previous studies have made significant achievements in predicting 2D or 3D gazes from monocular face images.This study presents a deep neural network for 2D gaze estimation on mobile devices.It achieves state-of-the-art 2D gaze point regression error,while significantly improving gaze classification error on quadrant divisions of the display.To this end,an efficient attention-based module that correlates and fuses the left and right eye contextual features is first proposed to improve gaze point regression performance.Subsequently,through a unified perspective for gaze estimation,metric learning for gaze classification on quadrant divisions is incorporated as additional supervision.Consequently,both gaze point regression and quadrant classification perfor-mances are improved.The experiments demonstrate that the proposed method outperforms existing gaze-estima-tion methods on the GazeCapture and MPIIFaceGaze datasets. 展开更多
关键词 Computer vision Gaze estimation Metric learning ATTENTION Multi-task learning
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Effect of thickness on magnetic properties of single domain GdBCO bulk superconductors
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作者 高平 杨万民 +2 位作者 武婷婷 王妙 刘坤 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第2期454-459,共6页
To study the influence of thickness on the magnetic properties of ReBCO(Re = Y, Gd, Sm, Nd, etc.) bulk superconductors, a single domain gadolinium barium copper oxide(GdBCO) bulk superconductor fabricated by the Re + ... To study the influence of thickness on the magnetic properties of ReBCO(Re = Y, Gd, Sm, Nd, etc.) bulk superconductors, a single domain gadolinium barium copper oxide(GdBCO) bulk superconductor fabricated by the Re + 011 top seeded infiltration growth(Re + 011 TSIG) method was continuously sliced along the bottom to obtain samples of different thickness. The levitation force and attractive force of these samples were tested at 77 K in the zero-field-cooled(ZFC)state. It is found that as the sample thickness decreases, the levitation force decreases gradually whereas the attractive force increases. This is related to the varied ability to resist the penetration of magnetic field occasioned by varying sample thickness, which are deeply revealed by combining with the characteristics of the non-ideal type-II superconductor. Further,the levitation force exhibits a trend of slow initial change followed by rapid change, which may be attributed to the growth of the sample. Measurement of the trapped field shows that a similar distribution of trapped field at the top and bottom surfaces can be achieved by removing some materials from the bottom of the bulk. These results provide a reference for meeting the actual requirements of ReBCO bulks of different thicknesses and greatly contribute to practical designs and applications. 展开更多
关键词 single domain GdBCO bulk superconductor levitation force attractive force
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Glucocorticoid reduction induced chorea in pediatric-onset systemic lupus erythematosus:A case report
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作者 Yan-Qiu Xu miao wang Ying Zhang 《World Journal of Clinical Cases》 SCIE 2023年第32期7872-7875,共4页
BACKGROUND Pediatric-onset systemic lupus erythematosus(SLE)is typically more severe than adult-onset SLE,with a higher incidence of nervous system involvement.Chorea is a relatively rare neurological complication rep... BACKGROUND Pediatric-onset systemic lupus erythematosus(SLE)is typically more severe than adult-onset SLE,with a higher incidence of nervous system involvement.Chorea is a relatively rare neurological complication reported in 2.4%-7%of SLE patients.In particular,chorea induced by glucocorticoid dose reduction is even rarer.Herein,we report the case of a girl with SLE,who developed chorea during the process of glucocorticoid therapy reduction.CASE SUMMARY We describe a 14-year-old girl who was diagnosed with SLE.She was treated with methylprednisolone and rituximab,and her symptoms improved.On the second day after the methylprednisolone dose was reduced according to the treatment guidelines,the patient developed chorea.Her condition improved after adjusting her glucocorticoid regimen.CONCLUSION This case is a reminder that extra attention to chorea is required in SLE patients during glucocorticoid dose reduction. 展开更多
关键词 GLUCOCORTICOID CHOREA Pediatric systemic lupus erythematosus Case report
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Complete genome sequence of a plant growth-promoting endophytic bacterium V4 isolated from tea(Camellia sinensis)leaf
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作者 Huiyan Jia Yaxing Yan +5 位作者 Jinqing Ma Enhua Xia Ruihong Ma Yifan Li miao wang Wei-Wei Deng 《Beverage Plant Research》 2023年第1期219-230,共12页
V4 is a Gram-negative,plant growth promoting endophytic bacterium that promotes the growth of tea plants.The appearance of V4 is rod shaped,with average dimensions of 1.34−1.5×0.32−0.39μm and flagellum at both e... V4 is a Gram-negative,plant growth promoting endophytic bacterium that promotes the growth of tea plants.The appearance of V4 is rod shaped,with average dimensions of 1.34−1.5×0.32−0.39μm and flagellum at both ends.The complete genome contains one circular chromosome and two plasmids.It is 4,697,109 bp in size,and contains 4,189 protein-coding genes,four gene islands and two prophages.Taxonomic classification suggested that V4 was a strain of Erwinia aphidicola.It was possible to find genes involved in plant growth promotion traits present in the genome of V4.Meanwhile,V4 was consistent with plant growth-promoting endophytic bacteria containing key synthetic genes associated with IAA synthesis,and P-solubilization,siderophores.V4 has siderophore biosynthesis genes compared with plant pathogenic bacteria showing stronger survival ability and the ability to interaction with the host plant.In addition,V4 endophytic bacteria possess a higher copy number of genes for flagellar assembly,bacterial chemotaxis and P-pilus assembly indicating stronger colonization and communication ability with host plants compared with five other bacteria in comparative genomic analysis.Analysis of the V4 endophytic bacterium complete genome sequence provides novel insights into the endophytic bacteria-host plant relationship,and suggests many candidate genes for post-genomic experiments. 展开更多
关键词 sinensis) TRAITS sequence
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消融指数指导下高功率消融在老年心房颤动患者中的应用效果 被引量:6
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作者 苗旺 张楠 +1 位作者 郭敏 王睿 《中华老年心脑血管病杂志》 北大核心 2022年第2期151-154,共4页
目的探讨消融指数指导下高功率消融在老年心房颤动(房颤)患者中的有效性和安全性。方法选取2019年1月~2021年1月于山西医科大学第一医院行高功率(45 W)消融的老年房颤患者50例为高功率组,另选常规功率消融(35W)50例患者为常规功率组,2... 目的探讨消融指数指导下高功率消融在老年心房颤动(房颤)患者中的有效性和安全性。方法选取2019年1月~2021年1月于山西医科大学第一医院行高功率(45 W)消融的老年房颤患者50例为高功率组,另选常规功率消融(35W)50例患者为常规功率组,2组相同消融指数指导消融。消融终点为双侧肺静脉隔离,比较2组手术相关参数、并发症和手术成功率。结果高功率组中阵发性房颤比例明显高于常规功率组(76.0%vs 54.0%,P=0.021)。高功率组较常规功率组手术时间明显缩短,阵发性房颤为[(229.6±8.0)min vs(238.5±2.8)min,P=0.006],持续性房颤为[(237.5±12.8)min vs(263.0±22.8)min,P=0.024]。高功率组较常规功率组消融时间明显缩短,阵发性房颤为[(1384.4±78.3)s vs(1695.5±89.1)s,P=0.022],持续性房颤为[(1622.5±122.9)s vs(2037.0±437.9)s,P=0.045]。2组肺静脉隔离率均为100.0%。2组均未发生消融相关并发症,随访3个月时,高功率组与常规功率组的阵发性房颤患者和持续性房颤患者中房颤复发比例比较无显著差异(10.5%vs 11.1%,8.3%vs 13.0%,P>0.05)。结论在老年房颤患者中,高功率消融较常规功率消融明显缩短手术时间和消融时间,不增加手术并发症、不影响手术成功率。 展开更多
关键词 导管消融术 心房颤动 手术时间 认知障碍 手术后并发症
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动脉瘤性蛛网膜下腔出血首日凝血功能研究 被引量:6
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作者 苗旺 赵珂 +7 位作者 郭俊爽 张书语 申楠楠 王慧彬 荆婧 黄培培 张丽娜 滕军放 《中国实用神经疾病杂志》 2020年第14期1231-1235,共5页
目的动脉瘤性蛛网膜下腔出血(aneurysmal subarachnoid hemorrhage,aSAH)后凝血功能异常影响患者预后。探讨aSAH首日患者凝血功能变化,并分析其与反映意识障碍程度的相关性。为重症aSAH患者首日精细化管理提供参考。方法40例发病24 h内... 目的动脉瘤性蛛网膜下腔出血(aneurysmal subarachnoid hemorrhage,aSAH)后凝血功能异常影响患者预后。探讨aSAH首日患者凝血功能变化,并分析其与反映意识障碍程度的相关性。为重症aSAH患者首日精细化管理提供参考。方法40例发病24 h内入住神经重症监护室的aSAH患者,与20例年龄、性别相匹配的健康对照组进行比较。对血栓弹力图(thrombelastography,TEG)结果、GCS评分进行分析;根据入院时GCS评分进行亚组分析,比较GCS≤7和GCS>7亚组TEG各项结果;并分析其与GCS的相关性。结果与对照组比较,aSAH患者首日反应凝血因子功能的TEG-R值明显降低(4.18±1.54 vs 6.61±0.95,P=0.001);纤溶系统(LY30、EPL)和其他指标(MA、K、Angel)、常规凝血功能差异无统计学意义(P>0.05)。GCS≤7亚组较GCS>7亚组TEG-R值也明显降低(3.32±1.04 vs 5.24±1.41,P<0.001),且TEG-R与GCS评分具有相关性(r=0.551,P<0.001)。结论aSAH首日患者凝血因子功能增强的高凝状态,尤其是GCS≤7的患者,且与GCS高度相关;但纤溶系统无明显变化。 展开更多
关键词 蛛网膜下腔出血 血栓弹力图 凝血因子 纤溶系统 凝血异常
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神经重症急性期患者深静脉血栓形成因素分析 被引量:6
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作者 苗旺 张书语 +6 位作者 郭俊爽 申楠楠 任志平 宋丹丹 臧秋玲 崔璨 滕军放 《中国实用神经疾病杂志》 2020年第17期1525-1529,共5页
目的回顾性分析神经重症患者血栓(Deep vein thrombosis,DVT)形成的相关因素,为寻找早期、敏感的DVT预测和干预指标提供参考。方法选取2018-07―2019-12郑州大学第一附属医院行四肢深静脉彩色超声检查的2031患者为研究对象,统计其DVT的... 目的回顾性分析神经重症患者血栓(Deep vein thrombosis,DVT)形成的相关因素,为寻找早期、敏感的DVT预测和干预指标提供参考。方法选取2018-07―2019-12郑州大学第一附属医院行四肢深静脉彩色超声检查的2031患者为研究对象,统计其DVT的发生率。并将生化、血栓弹力图(Thromboelastography,TEG)及下肢深静脉彩超结果均齐全的284例患者分为有血栓组和无血栓组进行对比分析。结果2031患者中DVT 516例,发生率25.4%。资料齐全的284例患者中,DVT 120例,无DVT 164例;其中无症状DVT 109例(90.83%),包括肌间DVT 103例,肌间合并非肌间3例,非肌间DVT3例;症状性DVT 11例(9.17%)。与无DVT组相比,DVT组患者年龄较大(63.28±12.20 vs 57.77±15.62);TEG-R值减小4.30(3.80,5.60)vs 4.80(4.10,5.80);TEG-K值减小1.50(1.20,1.80)vs 1.60(1.30,2.20);部分活化凝血酶时间(Activated partial thrombin time,APTT)缩短28.05(26.03,30.8)vs 29.10(27.00,31.58);D-二聚体增高0.76(0.35,1.85)vs 0.46(0.18,0.90),纤维蛋白降解产物(Fibrinogen degradation products,FDP)升高6.31(2.79,12.77)vs 3.98(1.87,8.49);以上差异均具有统计学意义(P<0.05)。结论神经重症急性期约1/4患者将发生DVT,且以无症状性的下肢肌间静脉血栓为主;与DVT相关因素为患者年龄偏大,凝血因子功能增强,纤维蛋白原功能增强,FDP和D-二聚体升高。 展开更多
关键词 神经重症 深静脉血栓 血栓弹力图 纤维蛋白降解产物 D-二聚体
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交叉持股会降低股价崩盘风险吗? 被引量:4
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作者 杨松令 王淼 刘亭立 《当代金融研究》 2018年第1期1-16,共16页
股价崩盘会严重损害股东的利益,对资本市场的健康发展产生极大的负面影响。交叉持股是否会延缓股票崩盘的风险?本文以2008至2014年沪深两市A股上市公司为研究样本,考察交叉持股与股价崩盘风险的关系。研究发现,交叉持股对上市公司股价... 股价崩盘会严重损害股东的利益,对资本市场的健康发展产生极大的负面影响。交叉持股是否会延缓股票崩盘的风险?本文以2008至2014年沪深两市A股上市公司为研究样本,考察交叉持股与股价崩盘风险的关系。研究发现,交叉持股对上市公司股价崩盘风险有显著抑制作用。同时,在盈利性较差、成长性较差的上市公司,交叉持股现象对其股价崩盘风险有显著抑制作用。本文为交叉持股在资本市场的作用做出了新的解释,也为交叉持股产生的经济后果提供了新的证据。 展开更多
关键词 交叉持股 股票市场 崩盘 公司治理
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