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Path File镍钛锉建立根管治疗疏通通道和根管预备的临床效果评价

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吉林大学学报（医学版） 2014年第2期40卷 413-417页

作者：郭婷婷王成坤首都医科大学附属北京口腔医院综合科北京100050 吉林大学口腔医院牙体牙髓病科吉林长春130021

目的：比较Path File镍钛锉与不锈钢K型锉建立根管治疗疏通通道及根管预处理的临床疗效，评估Path File的临床应用效果。方法：根据不同的治疗方式，采用随机数字表法将80例患者（252个根管）随机分为：有经验医师使用Path File镍钛锉... 详细信息

目的：比较Path File镍钛锉与不锈钢K型锉建立根管治疗疏通通道及根管预处理的临床疗效，评估Path File的临床应用效果。方法：根据不同的治疗方式，采用随机数字表法将80例患者（252个根管）随机分为：有经验医师使用Path File镍钛锉（DP）组、有经验医师使用不锈钢K型锉（DK）组、学生使用Path File镍钛（SP）组和学生使用不锈钢K型锉（SK）组，每组20例。各组患者均为相应术者采用对应的器械建立根管的疏通管道，并进行根管预处理。记录每组操作时间，4组患者近期疼痛发生情况采用视觉评分标尺（VSA）评价，根据4组患者是否需要麻醉后进行根管预备判断根管清洁效率。比较4组患者在操作时间、术后疼痛和根管清洁效率方面的差异。结果：使用Path File患者术后疼痛发生率为15％～20％，与使用不锈钢K锉患者疼痛发生率（25％～35％）比较，差异无统计学意义（P〉0．05）；与仅用不锈钢K锉比较，有经验医师使用Path File镍钛锉进行根管预处理的操作时间由（7．44±3．58）min降到（2．21±2．31）min，学生操作时间由（9．75±5．29）min降到（4．07±6．41）min，DP组与DK组，SP组与SK组操作时间比较差异有统计学意义（P〈0．05）；使用Path File的患者根管清洁效率为85％～95％，与使用不锈钢K锉患者（30％～55%）比较差异有统计学意义（P〈0．05）；使用Path File根管锉时，有经验的医师和学生操作后操作时间、患者清洁效率和术后疼痛比较差异无统计学意义（P〉0．05）。结论：与不锈钢K锉比较，Path File根管锉可以在较短时间内进行预处理以及建立顺滑的疏通通道，经验欠缺的医师可使用Path File达到与经验丰富操作者类似的临床效果。

关键词：镍钛旋转工具 Path File镍钛锉 K型锉根管预备术后疼痛

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逆断层上覆土层地表破裂影响因素的数值模拟

地震地质 2023年第5期45卷 1200-1218页

作者：郭婷婷徐锡伟袁仁茂杨宏智山东省地震工程研究院济南250021 山东省地震局济南250014 中国地质大学(北京) 北京100083 应急管理部国家自然灾害防治研究院北京100085 中国地震局地质研究所地震与火山灾害重点实验室北京100029 山东省物化探勘查院济南250013

强震发生时,震源断层错动引发上覆土体变形破裂是地面建(构)筑物破坏的重要原因。为研究和分析上覆土层地表变形与破裂特征及其影响因素,文中通过有限元数值模拟方法,综合分析断层倾角、断层错动位移量、上覆土层厚度对上覆土层地表变... 详细信息

强震发生时,震源断层错动引发上覆土体变形破裂是地面建(构)筑物破坏的重要原因。为研究和分析上覆土层地表变形与破裂特征及其影响因素,文中通过有限元数值模拟方法,综合分析断层倾角、断层错动位移量、上覆土层厚度对上覆土层地表变形与破裂的影响及其规律。结果表明:1)断层垂直位错量为上覆土层厚度的3.3%、倾角仅为30°时,发生地表破裂;断层垂直位错量为上覆土层厚度的5%、倾角为30°、45°时,发生地表破裂;断层垂直位错量为上覆土层厚度的6.6%、倾角为30°、45°、70°时,发生地表破裂;断层垂直位错量为上覆土层厚度的10%、倾角为30°、45°、70°与逼近90°时,均发生地表破裂。2)随垂直位错量的增加或上覆土层厚度与断层倾角的减小,地表等效应变逐渐变大,越容易发生地表破裂。3)随着断层倾角由30°、45°增加至70°,上、下盘地表破裂宽度比值从约3︰1增加至3︰2~1︰1。4)上覆土层的变形与破裂,首先始于断层基岩与土体交界面的土体破裂,随着位错量的增加,当断层倾角为30°、45°、70°时,地表均出现了1个初始破裂点;当断层倾角逼近90°时,地表出现了2个初始破裂点,最后上覆土层出现贯通破裂。

关键词：数值模拟逆断层上覆土层地表破裂断层倾角垂直位错量等效有效应变

Impact of continuous care on cardiac function in patients with lung cancer complicated by coronary heart disease

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World Journal of Clinical Cases 2024年第2期12卷 314-321页

作者： ting Gao Jin-Lan Luo Pan guo Xi-Wen Hu Xiao-Yan Wei Yan Hu Division of Cardiovascular First Ward Department of Internal MedicineLiyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Cardiovascular Medicine Wuhan Wuchang HospitalWuhan 430063Hubei ProvinceChina Cardiovascular Clinical Medical Center Liyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Second Thoracic Surgery Hubei Cancer HospitalWuhan 430079Hubei ProvinceChina

BACKGROUND Despite sharing similar pathogenic factors,cancer and coronary heart disease(CHD)occur in comparable populations at similar ages and possess similar susceptibility ***,it is increasingly commonplace for patients to experience the simultaneous occurrence of cancer and CHD,a trend that is steadily *** To determine the impacts of continuing care on lung cancer patients with CHD following percutaneous coronary intervention(PCI).METHODS There were 94 lung cancer patients with CHD following PCI who were randomly assigned to the intervention group(n=38)and the control group(n=41).In the intervention group,continuing care was provided,while in the control group,routine care was *** evaluation of cardiac and pulmonary function,medication compliance,a 6-min walk test,and patient quality of life was *** Differences between the two groups were significant in left ventricular ejection fraction,6-min walk test,oxygen uptake,quality of life and medication compliance(P<0.05).In comparison with the control group,the enhancement in the intervention group was more *** intervention group had more patients with high medication compliance than the control group,with a statistically significant difference(P<0.05).CONCLUSION After undergoing PCI,lung patients with CHD could benefit from continued care in terms of cardiac and pulmonary function,medications compliance,and quality of life.

关键词： Lung cancer Continuing care Coronary heart disease Percutaneous coronary intervention

Preparation of Tartary Buckwheat Seed Coating Agent and Its Effect on Germination

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 699-712页

作者： Xin Zou Jieyu Zhang ting Cheng Yangyang guo Xiao Han Han Liu Yuxing Qin Jie Li Dabing Xiang Key Laboratory of Coarse Cereal Processing Ministry of Agriculture and Rural AffairsCollege of Food and Biological EngineeringChengdu UniversityChengdu610106China Agricultural Service Center People’s Government of Yanglu TownYunyang CountyChongqing404512China

To mitigate the wastage of seed resources and reduce the usage of pesticides and fertilizers, seed coating agentshave gained popularity. This study employs single-factor and multi-index orthogonal experimental design methodsto investigate the seed coating formula and physical properties of Tartary buckwheat. The specific effects ofeach component on Tartary buckwheat seed germination are analyzed. The findings reveal that the seed coatingagent formulated with 1.5% polyvinyl alcohol, 0.15% sodium alginate, 0.2% op-10, 0.1% polyacrylamide, 8% colorant,3% ammonium sulfate, 1% potassium dihydrogen phosphate, and 0.15% carbendazim exhibits the mosteffective coating. It demonstrates optimal physical properties and promotes seed germination efficiently. The suspensionrate of this seed coating agent reaches 91.12%, with a mere 2.13% coating shedding rate and 2.5% coatingseed rot rate. Furthermore, it achieves a germination percentage of 99.17%, which is 20.84% higher than the lowestgroup. The germination potential and index are also significantly higher than the lowest group, with anincrease of 20.84% and 26.56%, respectively. Additionally, the vitality index is 553.08, a 15.75% increase comparedto the lowest group. The application of seed coating agents helps reduce seed resource loss, increase plant numbers,and ultimately enhance agricultural yields. This finding holds practical significance in agriculturalproduction.

关键词： Tartary buckwheat seed coating agent formula germination

Inhibiting oxygen vacancies and twisting NbO_(6) octahedron in erbium modified KNN-based multifunctional ceramics

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Journal of Materiomics 2024年第1期10卷 179-189页

作者： Lulu Gao Zhiyong Liu Pengrong Ren Renhong Liang ting Li Kun guo Bing Xie Jinshan Lu Pu Mao Jun Tian Longlong Shu School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang330063China School of Materials Science and Engineering Xi'an University of TechnologyXi'an710048China School of Physics and Materials Science Nanchang UniversityNanchang330031China Institute of Applied Chemistry Jiangxi Academy of SciencesNanchang330096China

It is a challenge to obtain highly tunable multifunctional performances in one ferroelectric system by a simple approach to meet the miniaturization,integration,and functionalization requirements of advanced electronic ***,rare earth erbium(Er)modulated 0.9K_(0.5)Na_(0.5)NbO_(3)-0.1Sr(1-x)Er_(x)Ti_((1-x/4))O_(3),(0.9KNN-0.1ST:xEr)transparent-photoluminescent-ferroelectric energy storage multifunctional ceramics are prepared to solve this *** effect of lattice distortion and oxygen vacancies by Er doping on the optical and electrical properties is systematically *** Er^(3+)ions can introduce a large distortion of the NbO_(6) octahedron by replacing the A-site in KNN-based *** to the higher c/a ratio and lower oxygen vacancy content are simultaneously obtained in 0.9KNN-0.1ST:0.1Er *** effective energy storage density(Wrec)of 0.86 J/cm^(3),excellent near-infrared transmittance of 51.7%(1100 nm)and strong green upconversion photoluminescence are achieved in this multifunctional *** study provides a solid basis for rare earth ions doped ferroelectric ceramics with tunable multifunctional properties and has significant potential for applications in optoelectronic devices.

关键词： KNN Upconversion photoluminescence Multifunctional ceramics Oxygen vacancy Octahedron

Dinitrophenyl-oxadiazole compounds:Design strategy,synthesis,and properties of a series of new melt-cast explosives

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Defence Technology（防务技术） 2024年第5期35卷 100-107页

作者： Bao-long Kuang ting-wei Wang Cong Li Mou Sun Qamar-un-Nisa Tariq Chao Zhang Zhi-ming Xie Zu-jia Lu Jian-guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China China Wuzhou Engineering Group CO. LTD.Beijing 100053China

Melt-cast explosives are the most widely used energetic materials in military composite explosives,researchers have been unremittingly exploring high-energy and insensitive melt-cast *** this work,a series of dinitrophenyl-oxadiazole compounds were designed and *** compounds have an ideal low melting point(80-97℃),good detonation performance(detonation velocity D=6455-6971 m/s,detonation pressure P=18-19 GPa)and extreme insensitive nature(impact sensitivity≥60 J,friction sensitivity>360 N).All these compounds were well characterized by nuclear magnetic resonance,fourier transform infrared spectroscopy,elemental *** 2,3 were unambiguously confirmed by X-ray single crystal diffraction *** a result,their overall properties are superior to traditional melt-cast explosives trinitrotoluene(TNT)and dinitroanisole(DNAN)which may have excellent potential applications in insensitive melt-cast explosives.

关键词： Dinitrophenyl-oxadiazole Melt-cast explosive Low sensitivity

从概念基元空间到语义基元空间的映射--HNC联想脉络与词汇语义结构表述研究

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华东师范大学学报（哲学社会科学版） 2011年第1期43卷 139-143,156页

作者：萧国政肖珊郭婷婷武汉大学文学院武汉大学语言与信息研究中心武汉430072

从HNC理论的两个重要假设入手,将HNC概念表达式与"词群—词位变体"理论的词义基元结构式进行对接。这种延伸在工程上表现为面向语言信息处理技术的语义网建设,在理论上可概括为"概念基元空间到词汇语义基元空间的映射"。

关键词：语言信息处理概念基元语义基元结构主干义素分析 “词群-词位变体”理论

铝基碳化硅复合材料超声振动辅助划痕表面形貌研究

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功能材料 2014年第23期45卷 23131-23133页

作者：周晓勤梁桂强郭婷婷吉林大学机械科学与工程学院长春130022 滨州职业学院电气工程学院山东滨州256603

为了揭示SiCp/Al复合材料超声振动加工的去除机理,开展针对SiCp/Al复合材料的超声振动辅助划痕(UVAS)和普通划痕对比实验,从划痕形貌方面进行UVAS和普通划痕对比分析。结果表明,普通划痕凹槽处出现大颗粒的破碎,而UVAS凹槽表面则呈现较... 详细信息

为了揭示SiCp/Al复合材料超声振动加工的去除机理,开展针对SiCp/Al复合材料的超声振动辅助划痕(UVAS)和普通划痕对比实验,从划痕形貌方面进行UVAS和普通划痕对比分析。结果表明,普通划痕凹槽处出现大颗粒的破碎,而UVAS凹槽表面则呈现较多的细小碎屑;超声划痕的材料去除率比普通划痕的大。超声振动的引入对改善加工表面形貌有明显作用,是SiCp/Al精密加工的有效方法。

关键词：超声振动辅助划痕 SiCp/Al 表面形貌

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陶瓷复合靶板的抗侵彻模型

高压物理学报 2014年第5期28卷 551-556页

作者：郭婷婷任会兰宁建国北京理工大学爆炸科学与技术国家重点实验室北京100081

为了研究陶瓷复合靶的抗侵彻性能,在陶瓷的空腔膨胀理论中,提出了一个表征陶瓷损伤的损伤因子。基于考虑损伤的陶瓷空腔膨胀理论和金属空腔膨胀理论,并忽略靶板侧向边界的影响,根据陶瓷材料和金属材料的特点,按照弹-靶交界面处材料的不... 详细信息

为了研究陶瓷复合靶的抗侵彻性能,在陶瓷的空腔膨胀理论中,提出了一个表征陶瓷损伤的损伤因子。基于考虑损伤的陶瓷空腔膨胀理论和金属空腔膨胀理论,并忽略靶板侧向边界的影响,根据陶瓷材料和金属材料的特点,按照弹-靶交界面处材料的不同应力状态,分4种情况进行了讨论。分别求得了4种分区下的陶瓷靶板的抗侵彻阻力,分析了影响陶瓷靶板抗侵彻阻力的材料性质。结果表明:(1)在陶瓷靶板的材料参数中,陶瓷失效后的压剪系数对靶板阻力的影响较大,而抗拉强度和抗压强度对靶板阻力的影响较小;(2)当陶瓷靶板近似为一个无限大的靶板时,其裂纹区的相对尺寸及空腔膨胀压力是一个常数。

关键词：陶瓷复合靶板侵彻空腔膨胀损伤