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Science China Materials 2022年第4期65卷 1028-1033页

作者： Junsu ha Junseop Lim Jun Yeob Lee School of Chemical Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do16419Republic of Korea

An electron-transport-type host was synthesized using a benzo[4,5]furo[3,2-d]pyrimidine(BFP)core to develop a high triplet energy *** host was designed to have both the tetraphenylsilyl blocking group and the hole-transport-type carbazole *** the device application,the host was used as an electron-transport-type host mixed with a hole-transport-type 3,3'-di(9H-carbazol-9-yl)-1,1†-biphenyl(mCBP)host in the blue phosphorescent organic light-emitting diodes(PhO-LEDs)doped with a[[5-(1,1-dimethylethyl)-3-phenyl-1H-imidazo[4,5-b]pyrazin-1-yl-2(3H)-ylidene]-1,2-phenylene]bis-[[6-(1,1-dimethylethyl)-3-phenyl-1H-imidazo[4,5-b]pyrazin-1-yl-2(3H)-ylidene]-1,2-phenylene]iridium(Ir(cb)3)blue *** a result,the mCBP:CzBFPmSi mixed host showed high external quantum efficiency over 20%at 1000 cd m^(−2) and low efficiency roll-off in the blue PhOLEDs.

关键词： blue device host efficiency lifetime

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拉拔自激振动方程及其数值算法分析

锻压技术 2024年第5期49卷 76-83页

作者：曹益忠袁豪哈达张卫荣冯金刚太原理工大学机械与运载工程学院山西太原030024 先进金属复合材料成形技术与装备教育部工程研究中心山西太原030024

针对拉拔加工过程中常发生“追逐”或“跳跃”现象并诱发产生振动的问题,根据丁文镜教授提出的机械系统追逐现象微分控制方程,建立了拉拔自激振动的时变质量非线性微分控制方程,并利用移位的Chebyshev多项式函数对建立的微分方程进行数... 详细信息

针对拉拔加工过程中常发生“追逐”或“跳跃”现象并诱发产生振动的问题,根据丁文镜教授提出的机械系统追逐现象微分控制方程,建立了拉拔自激振动的时变质量非线性微分控制方程,并利用移位的Chebyshev多项式函数对建立的微分方程进行数值求解。另外,给出3个具体的工况模拟问题,每个问题分别考虑了不同的阻尼系数、刚度系数、变质量函数和摩擦力,并绘制了相应的无量纲位移图和相图,通过数值仿真研究了质量模块和摩擦力分别变化时对拉拔过程的影响。结果表明:摩擦力呈线性或者周期性等变化时,对拉拔过程的振动位移产生较大的影响,而质量模块变化不会对拉拔结果产生影响。

关键词：机械系统追逐现象拉拔质量模块摩擦力振动

沉积参数对TiO_(2)纳米薄膜的显微结构和光学性能的影响

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真空 2024年第3期61卷 57-62页

作者：纪建超颜悦哈恩华北京航空材料研究院股份有限公司北京100095 北京市先进运载系统结构透明件工程技术研究中心北京100095

采用直流脉冲磁控溅射的方法,在有机玻璃上沉积了纳米TiO_(2)光学薄膜。研究了沉积功率、基片温度等参数对TiO_(2)薄膜结构及光学性能的影响。借助椭圆偏振光测试仪、X射线光电子能谱仪(XPS)、X射线衍射仪(XRD)、分光光度计、原子力显微... 详细信息

采用直流脉冲磁控溅射的方法,在有机玻璃上沉积了纳米TiO_(2)光学薄膜。研究了沉积功率、基片温度等参数对TiO_(2)薄膜结构及光学性能的影响。借助椭圆偏振光测试仪、X射线光电子能谱仪(XPS)、X射线衍射仪(XRD)、分光光度计、原子力显微镜(AFM)等表征手段分析了薄膜的光学特性、元素组成、结晶性能及显微结构。结果表明:随沉积功率的增加,薄膜氧含量降低,粒径减小,折射率递增,可见光波段的透过率和反射率递减;随基片温度上升,薄膜的沉积速率降低,这促进了薄膜粒子的聚集,在光学方面表现为随温度上升,折射率及可见光透过率同时增加;TiO_(2)薄膜的禁带宽度在3.12~3.16eV之间,随沉积功率增加和基片温度上升,其禁带宽度递减。

关键词： TiO_(2)薄膜磁控溅射显微结构光学性能

在PMMA上低温沉积TiO_(2)薄膜的光学性能及显微结构

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中国塑料 2024年第3期38卷 7-12页

作者：纪建超颜悦陈宇宏哈恩华郝常山雷沛北京航空材料研究院股份有限公司北京100095 北京航空材料研究院北京100095 北京市先进运载火系统结构透明件工程技术研究中心北京100095

采用直流脉冲磁控溅射的方法,在有机玻璃(聚甲基丙烯酸甲酯,PMMA)上沉积了TiO_(2)薄膜。研究了氧气比例、真空度等参数对TiO_(2)薄膜的结构及光学性能的影响。借助椭圆偏振光测试仪、X射线衍射(XRD)仪、分光光度计、原子力显微镜(AFM)... 详细信息

采用直流脉冲磁控溅射的方法,在有机玻璃(聚甲基丙烯酸甲酯,PMMA)上沉积了TiO_(2)薄膜。研究了氧气比例、真空度等参数对TiO_(2)薄膜的结构及光学性能的影响。借助椭圆偏振光测试仪、X射线衍射(XRD)仪、分光光度计、原子力显微镜(AFM)等表征手段,分析了薄膜的光学特性、元素组成、结晶性能、及显微结构。结果表明,随氧气比例的增加,薄膜的沉积速率降低,沉积的薄膜的粒径变大,薄膜趋于疏松;在光学性能方面表现为随氧气比例的增加,折射率递减,但可见光透过率增加,反射率谱线出现红移;根据折射率计算的薄膜堆积密度分别为0.95、0.93、0.87、0.88、0.78,与氧气比例反向变化;根据光谱计算的薄膜禁带宽度在3.12~3.14 eV之间,与氧气比例反向变化;随工作真空度的降低,薄膜的沉积速率先升后降,薄膜趋于疏松,折射率下降,根据折射率计算的薄膜堆积密度为0.96、0.95、0.90、0.89、0.88、0.88、0.87,真空度对薄膜可见光透过率具有正向影响,对薄膜的禁带宽度有反向影响,禁带宽度在3.13~3.16 eV之间;本文沉积的TiO_(2)薄膜为无定形态,氧气比例与真空度的变化对其结晶性基本无影响。

关键词：聚甲基丙烯酸甲酯二氧化钛薄膜磁控溅射光学性能显微结构

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少捕慎诉慎押政策下逮捕制度的优化研究

泰山学院学报 2024年第1期46卷 54-62页

作者：苦打哈孙华鑫云南财经大学法政学院云南昆明650000

近年来,由于逮捕要件缺乏客观准确的证明标准、逮捕实践理念有失偏颇、非羁押强制措施运行状况不佳等原因,导致司法实践中逮捕数量较多、逮捕率较高。较高逮捕率不但违背了逮捕作为预防性措施的本质功能,也违背了少捕慎诉慎押政策初衷,... 详细信息

近年来,由于逮捕要件缺乏客观准确的证明标准、逮捕实践理念有失偏颇、非羁押强制措施运行状况不佳等原因,导致司法实践中逮捕数量较多、逮捕率较高。较高逮捕率不但违背了逮捕作为预防性措施的本质功能,也违背了少捕慎诉慎押政策初衷,未能实现打击犯罪与保障人权的有机统一。因此,在少捕慎诉慎押政策下优化逮捕制度,分别从逮捕制度的观念层面、逮捕制度的实质要件层面和逮捕制度配套要件层面提出优化路径。

关键词：少捕慎诉慎押非羁押强制措施逮捕羁押必要性审查

An Antimony Oxide pH Electrode for Tissue Culture Medium

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稀有金属材料与工程 2006年第A3期35卷 261-263页

作者： Yang ha Min Wang Department of Chemistry Zhejiang University Hangzhou 310028 China

A new approach named“caterpillar melt method”was developed to prepare wire type antimony oxide electrode for pH measurement in agar medium for tissue culture.A micro antimony wire was prepared from melt of the metal with the help of a glass capillary and the surface of the wire was oxidized in nitrate melt to obtain an antimony oxide electrode. Characterization results showed that the oxide layer is dense and uniform,with high physical and chemical *** electrode has a fast and stable response toward pH change for aqueous *** potential of the antimony electrode has a linear relationship with the pH of the solution (R^2=1.00) with a sensitivity of 54.1mV/*** electrode works well and is more stable in agar medium during tissue culture for pH monitoring.

关键词： pH measurement antimony oxide pH electrode tissue culture media

A procedural footprint enhancement of global topographic surface with multiple levels of detail

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International Journal of Digital Earth 2020年第4期13卷 527-545页

作者： Lukáš Brůha Jan Kolář Faculty of Science Department of Applied Geoinformatics and CartographyCharles University in PraguePragueCzech Republic Grifinor Project CopenhagenDenmark

Virtual globes are technologies for visual navigation through a threedimensional,multi-resolution model of the entire *** representations used in virtual globes,however,lack geometric flexibility at high-resolution levels of the planet-wide terrain *** is a problem especially if boundaries between individual geospatial features and the terrain are important.A novel integration of individual polygonal boundaries with a specific multi-resolution representation of the planet-wide terrain is developed in this *** the preparation stage,the integration relies on an original simplification algorithm applied to the polygonal boundaries between geospatial features and the *** output is a multiple level-of-detail(LOD)geometry,which can be combined with a known multi-LOD representation of the terrain that uses run-time *** data representation is suitable for storage in existing database systems,avoids any data redundancy across LODs,and is even independent of the subdivision schema that partitions the planet’s surface for the sake of dealing with *** runtime,a novel reconstruction algorithm stitches geometric parts from different LODs together in a manner that augments the multi-LOD representation of the *** a certain proximity range from a given position,the method reconstructs a scene that preserves topological relations between the boundaries of geospatial features with the *** method also guarantees that certain nearest proximity to the given position consists of the best geometries that correspond to the original *** properties of the method close up the gap between a mere exploratory visualization of static,pre-generated models and the models supporting geospatial analysis,which is deemed crucial for applications in Geographic Information Systems,Building Information Modelling and other software industries.A prototype implementation and experiment results that prove this method are also prese

关键词： Feature-based topography multiple level-of-detail procedural modeling vector data organization geometry reconstruction

Morbidity and Mortality of Acute Renal Failure in COVID-19 Patients in Intensive Care According to Waves/Variant: Case of the Grand Hôpital de l’Est Francilien Site de Meaux

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Open Journal of Internal Medicine 2024年第1期14卷 16-29页

作者： Khazy Anga Ariel Makembi Éric Amisi Éric Delpierre Vivien Hong Tuan ha Wilfrid Mbombo Jean Claude Mubenga Dan Kankonde Chris Nsituavibidila Lionel Diyamona Noelly Mukuna Gracia Likinda Tharcisse Mabiala Martin Mukenga Médard Bula-Bula Berthe Barhayiga Département d’Anesthésie Réanimation Université de Kinshasa Kinshasa République démocratique du Congo Service de Réanimation Grand H&ocircpital de l’Est Francilien Meaux France Département de Médecine Interne Université de Kinshasa Kinshasa République démocratique du Congo Service d’Anesthésie Réanimation Centre Hospitalier Monkole Kinshasa République démocratique du Congo Department of Anaesthesia and Intensive Care H&ocircpital Général de Référence de Kinshasa Kinshasa République démocratique du Congo Department of Anaesthesia and Intensive Care Université Protestante du Congo Kinshasa République démocratique du Congo

Introduction: The incidence of acute renal failure (ARF) varies between 20% and 40% of cases for COVID-19 patients admitted to the intensive care unit, with very high mortality, but heterogeneous according to the different epidemic waves, probably due to the genetic variant phenomenon of the virus. The aim of this study is to determine the morbidity and mortality of COVID-19 patients admitted with ARF to the intensive care unit of the Grand H?pital Est Francilien (GHEF) according to the waves and variants. Methods: Cross-sectional observational study of COVID-19 patients with ARF admitted to the intensive care unit of the GHEF site in Meaux covering the period from March 1st 2020 to December, 31st 2021. Per-hospitalisation and outcome data were collected and analysed with SPSS version 25.0 software using the Chi-square or Fischer’s exact test or Student’s t-test and logistic regression for p Results: A total of 86 patients were included. The mean age was higher (70 ± 8.5) in patients in the fourth wave than in the other waves (p = 0.015), with male predominance in all waves without significant difference. Co-morbidities: hypertension, diabetes, heart disease, dyslipidaemia and arrhythmia complete with fibrillation were present in all waves. The majority of patients were classified as KDIGO 1 for the different waves (1st: 61.9%, 2nd: 86.5%, 3rd: 80%, and 4th: 75%), with the same trend according to variant (alpha: 80%, beta: 75%, delta: 81.3%, omicron: 75%). Mortality by the wave was: 1st: 28.5%, 2nd: 37.5%, 3rd: 23% and 4th: 11%) and by variant: alpha: 24.2%, beta: 44.8%, delta: 20.7%, omicron: 10.3%). Overall mortality was 33.7%. Case fatality was higher in the fourth wave. Hypertension, shock, failure to recover renal function, acute lung oedema, ventilator-associated lung disease and hyperkalaemia were factors associated with mortality (p Conclusion: Acute renal failure is common in COVID-19 patients admitted to the intensive care unit, and m

关键词： Mortality COVID-19 Morbidity Renal Failure Intensive Care Unit

Significance of age and comorbidity as prognostic indicators for patients with bladder cancer

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Asian Journal of Andrology 2010年第5期12卷 766-774页

作者： Moon soo ha In Ho Chang Department of Urology College of Medicine Chung-Ang University Seou1140-75 7 Korea

The aim of this study was to determine the impact that age and comorbidity status have on both overall and bladder cancer-specific survival of bladder cancer patients. We obtained medical information pertaining to a population of 528 patients with newly diagnosed bladder cancer from Chung-Ang University Hospital cancer registry. The Adult Comorbidity Evaluation-27 （ACE-27） test, which has been previously validated in adult cancer patients, was used to assess comorbidity. We evaluated differences in the demographic and clinical characteristics of included patients, as well as differences in the treatments they received after categorizing them by age. The median age at the time of bladder cancer diagnosis of the entire cohort was 63 years, and the median follow-up time was 97 months. Of the 528 patients who were included in our study, 303 had at least one comorbid condition and 249 died during the follow-up period. When patients were stratified by age, we found that older patients had a higher proportion of severe comorbidities （P 〈 0.01） than younger patients, and that a lower proportion of them underwent radical cystec- tomy for invasive bladder cancer （IBC）（P 〈 0.01）. By multivariate analysis, we found that older age was predictive of lower overall survival （OS） and bladder cancer-specific survival （BCSS） rates among patients with superficial bladder cancer （SBC） and of lower OS rates among patients with IBC. We also found that moderate-severe comorbidity status and treatment through a bladder-conserving approach were predictive of lower OS and cancer-specific survival rates among patients with IBC. The disparity between overall deaths and bladder cancer deaths was shown in SBC and increased along with age and higher comorbidity. Age and comorbidity were found to be independent predictive factors of OS and BCSS among bladder cancer patients, and explained the disparity that we observed between overall bladder cancer-specific mortality rates.

关键词： age comorbidity neoplasm prognostic indicator urinary bladder

Bifurcation Analysis of the Voltage Controlled Photosensitive Chaotic Oscillator

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Chinese Physics Letters 2013年第6期30卷 42-45页

作者： Van ha Nguyen han Jung song Department of Nano Systems Engineering Inje UniversityGimhae 621-749Korea Center for Nano Manufacturing Inje UniversityGimhae 621-749Korea

A photosensitive chaotic oscillator which can be controlled with light illumination under various control voltage levels is *** oscillator consists of a photodiode for the light input,clock switches and capacitors for the sample and hold function,a nonlinear function that creates an adjustable chaos map,and a voltage shifter that adjusts the output voltage for *** optimizing the photodiode sub-circuit by using an available photodiode model in PC-based simulation program with integrated circuit emphasis to obtain a suitable output,the full chaotic circuit is verified with standard 0.6-μm complementary metal oxide semiconductor *** dynamics are analyzed as a function of the light intensity under different control voltage *** time series,frequency spectra,transitions in state spaces,bifurcation diagrams and the largest Lyapunov exponent are improved.

关键词： oscillator chaotic function