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International Journal of Clinical Medicine 2015年第8期6卷 579-585页

作者： dayashankara rao jk Aadya Sharma Shalender Sharma Varun Arya Ripan Das Department of Maxillofacial Surgery Faculty of Dental Sciences SGT University Gurgaon India

Ameloblastic fibroma (AF) is a rare tumour of mixed odontogenic origin that can occur either in mandible or maxilla but is most frequently found in the posterior region of mandible. Age of occurrence is generally between first and second decades of life. It is often mistaken for a den tigerous cyst due to presence of an impacted tooth. The diagnosis of AF usually occurs accidentally by routine radiographic examination for an impacted tooth. Histologically it consists of odontogenic ectomesenchyme resembling the dental papilla, epithelium resembling dental lamina and enamel organ without dental hard tissues. There is controversy in the literature as to whether the treatment should be conservative or a radical resection should be done. A conservative treatment strategy, such as enucleation and curettage, is usually sufficient. We describe a case of massive ameloblastic fibroma in a 5-year-old child with an unusual position in maxillary posterior region and without any impacted tooth. Surgical resection of the tumor through Weber Ferguson approach was done under GA with 2 years of follow-up without any recurrence.

关键词： Ameloblastic Fibroma Odontogenic Tumours Ectomesenchyme Maxilla

Prevalence and Sex Distribution of Temporomandibular Disorder and Their Association with Anxiety and Depression in Indian Medical University Students

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International Journal of Clinical Medicine 2015年第8期6卷 570-578页

作者： Kaberi Majumder Shalender Sharma dayashankara rao jk Vijay Siwach Varun Arya Sunil Gulia Department of Orthodontics SGT Dental College Gurgaon India Department of Oral and Maxillofacial Surgery SGT Dental College Gurgaon India

Objectives: The term TMD refers to a group of disorders characterized by pain in the temporomandibular joint and associated structures. The aim of this study was designed to evaluate prevalence, severity and sex distribution of sign and symptoms of TMD and to evaluate their relation with anxiety and depression among the students. Material and Methods: A total of 1000 university students were enrolled in the study (550 females;450 males), with ages ranged between 18 and 28 years. Helkimo anamnestic index (Ai) and clinical dysfunction index (Di) were used to determine symptoms and signs respectively. For the association of TMD with anxiety and depression, HAD (Hospital Anxiety and Depression) scale was used. Results showed that prevalence of one or more symptoms of TMD was 27.7%, while the prevalence of one or more signs of TMD was 64.4% which was mild in severity. Mild anamnestic symptoms (AiI) were found in 19.8% and severe symptoms (AiII) were found in 7.6%, while mild clinical sign (DiI), moderate clinical (DiII) and severe clinical sign (DiIII) were found in 49.7%, 12.2% and 2.4% respectively. Statistically there was no gender difference in these two scales. Regarding the association between TMD with anxiety and depression, 206 of the 311 students (66.2%) with TMD symptoms also had signs of anxiety and depression (P < 0.001). Conclusion: These findings confirmed that students had high prevalence of TMD which was significantly associated with anxiety and depression.

关键词： TMD Helkimo Index HAD Scale Anxiety

熔覆速度对激光-电复合丝材熔覆630不锈钢熔覆层组织及性能的影响

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应用激光 2024年第2期44卷 27-33页

作者：杨文选吕燕郭雅琪饶容荣赵璐西安思源学院陕西西安710038 西安科技大学机械工程学院陕西西安710054 增材制造技术应用陕西省高校工程研究中心陕西西安710038

针对矿用液压支架立柱表面修复问题,利用新工艺激光-电复合熔覆丝材修复方法进行工艺研究,设置熔覆速度为30mm/s、40mm/s、50mm/s、60mm/s、70mm/s、80mm/s来研究熔覆速度对熔覆层组织结构、硬度以及耐磨损性能的影响。分别使用金相显... 详细信息

针对矿用液压支架立柱表面修复问题,利用新工艺激光-电复合熔覆丝材修复方法进行工艺研究,设置熔覆速度为30mm/s、40mm/s、50mm/s、60mm/s、70mm/s、80mm/s来研究熔覆速度对熔覆层组织结构、硬度以及耐磨损性能的影响。分别使用金相显微镜和钨灯丝电子扫描显微镜进行显微组织分析,采用显微硬度计测量其熔覆层结合面到顶部的硬度,采用往复式摩擦磨损试验机对其耐磨损性能进行分析。试验表明,随着熔覆速度的增加,熔覆层与基体接触面波浪状纹路变浅,熔覆层厚度稳定在1300mm,熔覆层单道与单道之间夹杂的基体组织逐渐减少,熔覆层微观组织从熔覆层底部到顶部依次为柱状晶、混乱的等轴晶和树枝等轴晶,熔覆层硬度逐渐降低,摩擦系数先减小后增大,在熔覆速度为80mm/s时摩擦量最大,磨损形式主要为疲劳剥落。

关键词：激光电复合丝材摩擦磨损 630不锈钢

Spatial Correlation Properties of Tightly Focused J0-Correlated Azimuthally Polarized Vortex Beams

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Chinese Physics Letters 2013年第5期30卷 89-92页

作者：饶连周林惠川孙清泉 College of Electromechanical Engineering Sanming UniversitySanming 365004

Based on vectorial Debye diffraction theory, the spatial correlation properties in the focal region of a J0 -correlated azimuthally polarized vortex beam through a high numerical aperture (NA) are analyzed. The expressions for a pair of points on the axis of symmetry and for a pair of points in the focal plane are derived. It is found that the longitudinal and transverse coherence lengths in the focal region change with the variation in the topological charge and coherence parameter of the vortex field, together with the NA values. In addition, the degree of coherence is shown to possess phase singularities.

关键词： vortex symmetry topological

Review of the genus Brachytarsophrys(Anura:Megophryidae),with revalidation of Brachytarsophrys platyparietus and description of a new species from China

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Zoological Research 2020年第2期41卷 105-122页

作者： Yao Li Dan-Dan Zhang Zhi-Tong Lyu Jian Wang Yu-Long Li Zu-Yao Liu Hong-Hui Chen Ding-Qi rao Zhi-Fang Jin Chang-You Zhang Ying-Yong Wang State Key Laboratory of Biocontrol/The Museum of Biology School of Life SciencesSun Yat-Sen UniversityGuangzhouGuangdong 510275China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Jiangxi Jiulianshan National Nature Reserve GanzhouJiangxi 341700China

The genus-level recognition of monophyletic short-legged toads(Brachytarsophrys)has been recently implicated in the taxonomic debate of Megophrys sensu *** the present study,Brachytarsophrys is reasonably regarded as a distinct genus based on significant morphological differentiations and recent molecular ***,a comprehensive review of this genus is performed,with two species groups proposed based on morphological differences and phylogenetic ***,Brachytarsophrys platyparietus is removed as a synonym of Brachytarsophrys carinense and considered a valid species due to significant genetic divergence and distinct morphological *** addition,a new species,Brachytarsophrys orientalis ***.,is described based on a series of specimens collected from southeastern *** work takes the member species of the genus Brachytarsophrys to seven,suggesting that the diversity of Brachytarsophrys is *** addition,the genus levels of other monophyletic groups within the subfamily Megophryinae are discussed.

关键词： Genus level Megophryinae Morphology Phylogeny Revision

一株南方红壤区杉木根际高效解钾菌的筛选、鉴定及其培养条件优化

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林业科学研究 2022年第1期35卷 172-181页

作者：赵君饶惠玲冯清玉黄伟吴承祯李键福建农林大学林学院福建福州350002 武夷学院生态与资源工程学院福建南平354300 福建省高校森林生态系统过程与经营重点实验室福建福州350002

[目的]南方红壤区杉木人工林下根际土壤存在低钾胁迫环境,通过筛选、鉴定、优化培养高效解钾菌株,能够丰富解钾微生物资源库,为林木解钾工程菌的开发提供研究基础与数据支持。[方法]从不同林龄(2,4,10,15 a)杉木人工林下根际土壤中分离... 详细信息

[目的]南方红壤区杉木人工林下根际土壤存在低钾胁迫环境,通过筛选、鉴定、优化培养高效解钾菌株,能够丰富解钾微生物资源库,为林木解钾工程菌的开发提供研究基础与数据支持。[方法]从不同林龄(2,4,10,15 a)杉木人工林下根际土壤中分离筛选出79株解钾菌,并根据其形态、生长特征选取20株优势菌株,通过测定发酵液可溶性钾含量及解钾率筛选出1株最优解钾菌株,经16S rDNA鉴定确定菌属,采用单因素实验与正交试验对该菌株的培养基组分与培养条件进行优化。[结果](1)初筛获得的20株测试菌株中,共13株菌株解钾率为正值,即有效分解钾长石的解钾菌占65%。(2)经鉴定,芽孢杆菌属(Bacillus altitudinis)的jk13为最优解钾菌,其发酵液可溶性钾含量为81.06μg·mL^(−1),解钾率为60.49%,显著高于其他菌株(Pjk13在以0.5%甘露醇为碳源、以1.5%酵母粉为氮源、初始pH值为9、装液量为30 mL·100 mL^(−1)、接种量为1%、培养温度为35℃时菌液OD600值显著高于CK(Pjk13具有高效解钾能力,优化后以0.5%甘露醇、1.5%酵母粉为最适培养基组分,培养条件在弱碱、高温下能够显著提高菌株生长量,研究结果能够为改善林木钾素利用提供菌种资源与生物工程支持。

关键词：杉木解钾菌筛选与鉴定培养条件优化

J_0相干角向偏振涡旋光束的深聚焦(英文)

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强激光与粒子束 2013年第8期25卷 1945-1950页

作者：饶连周林惠川许国忠三明学院机电工程学院福建三明365004

通过矢量德拜理论,研究了J0相干角向偏振涡旋光束深聚焦的性质。推导了在焦点区域的光强分布、光谱相干度和偏振度的表达式。数值模拟结果表明,光强分布、相干度和偏振度不仅依赖于相干长度和数值孔径最大角,而且依赖于拓扑电荷数。这... 详细信息

通过矢量德拜理论,研究了J0相干角向偏振涡旋光束深聚焦的性质。推导了在焦点区域的光强分布、光谱相干度和偏振度的表达式。数值模拟结果表明,光强分布、相干度和偏振度不仅依赖于相干长度和数值孔径最大角,而且依赖于拓扑电荷数。这种光束在焦平面还可获得非常小的焦点和焦洞。

关键词：深聚焦 J0相干涡旋光束偏振

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真实和虚拟金钱奖赏影响风险决策行为

心理学报 2013年第8期45卷 874-886页

作者：徐四华方卓饶恒毅广东财经大学应用社会学与心理学系广州510320 中山大学心理学系广州510275 Center for Functional Neuroimaging Department of NeurologyUniversity of Pennsylvania

在风险情境下人类如何决策是长久以来心理学和经济学研究中一个极具挑战性的核心问题。众多研究采用真实或虚拟金钱作为奖赏强化物来探索风险决策行为的过程和机制,但对金钱奖赏真实性如何影响决策了解很少。仿真气球冒险任务(BART:Ball... 详细信息

在风险情境下人类如何决策是长久以来心理学和经济学研究中一个极具挑战性的核心问题。众多研究采用真实或虚拟金钱作为奖赏强化物来探索风险决策行为的过程和机制,但对金钱奖赏真实性如何影响决策了解很少。仿真气球冒险任务(BART:BalloonAnalogueRiskTask)可以在实验室条件下有效评估个体在真实社会中的风险行为。本研究采用BART任务,通过两个实验探讨和比较了真实与虚拟金钱奖赏对风险决策行为的影响。实验一的结果发现,与虚拟金钱奖赏相比,真实金钱奖赏情境下的风险决策更容易受上一次决策结果的影响,上一次决策失败会导致被试的风险偏好水平显著降低(平均吹气球的次数显著减少),同时决策失败(气球吹爆)次数也显著减少,提示真实金钱奖赏下有更强的反馈学习效应。实验二重复了实验一的结果,并进一步发现,虚拟金钱奖赏的幅度对被试的风险决策行为没有影响,而真实金钱奖赏的幅度能显著改变被试的风险决策行为,较大幅度的真实金钱奖赏可以显著降低被试的风险偏好水平,但这种奖赏幅度对风险偏好的调控效应只对感觉寻求水平低的被试有效,感觉寻求水平高的被试不受影响。这些发现表明真实与虚拟金钱奖赏对风险决策行为有不同的影响。我们的结果可以用风险决策的后悔理论或齐当别模型来解释。

关键词：仿真气球冒险任务风险决策真实金钱奖赏虚拟金钱奖赏

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离散单元法在行星式球磨机仿真中的应用

中国粉体技术 2015年第1期21卷 85-90页

作者：张昌松饶金辉陕西科技大学机电工程学院陕西西安710021

为了认识与系统结构、操作条件以及材料性能相关的参数对行星式球磨机研磨性能的影响,对国内外将离散单元法用于模拟和分析行星式球磨机球磨过程的研究进行归纳和总结,阐述从物料运动、能量转换、磨损和大型化等领域的研究与应用成果。... 详细信息

为了认识与系统结构、操作条件以及材料性能相关的参数对行星式球磨机研磨性能的影响,对国内外将离散单元法用于模拟和分析行星式球磨机球磨过程的研究进行归纳和总结,阐述从物料运动、能量转换、磨损和大型化等领域的研究与应用成果。结果表明:操作条件的优化可使有效碰撞和高能碰撞处于较优的比例;具体环境下,冲击和研磨对于物料细化的效果有待探索;粉体的团聚和润滑作用会阻碍粉体的细化;几何相似大型化后的介质碰撞能量正比于规模化比例的4.87次方。

关键词：离散单元法行星式球磨机运动分析能耗

纤维素纳米纤维接枝聚丙烯酸pH响应水凝胶的制备及性能

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材料导报 2017年第18期31卷 55-58页

作者：林皓胡家朋刘瑞来饶瑞晔武夷学院生态与资源工程学院福建省生态产业绿色技术重点实验室武夷山354300 福建师范大学材料科学与工程学院福建省高分子材料与工程重点实验室福州350007

以硝酸铈铵为引发剂,将具有pH响应的聚丙烯酸(PAA)接枝到电纺纤维素(Cell)纳米纤维膜上,制备了pH响应纤维素接枝聚丙烯酸(Cell-g-PAA)纳米纤维水凝胶。研究了接枝单体丙烯酸(N)与纤维素(c)质量比对Cell-g-PAA形貌、接枝率和溶胀性的影... 详细信息

以硝酸铈铵为引发剂,将具有pH响应的聚丙烯酸(PAA)接枝到电纺纤维素(Cell)纳米纤维膜上,制备了pH响应纤维素接枝聚丙烯酸(Cell-g-PAA)纳米纤维水凝胶。研究了接枝单体丙烯酸(N)与纤维素(c)质量比对Cell-g-PAA形貌、接枝率和溶胀性的影响。结果表明:m(N)∶m(c)值从5增加到10,接枝率从11%急剧增加到28%,然后趋于平稳;而m(N)∶m(c)值从5增加到15,溶胀率从(15.2±1.6)g/g增加到(46.1±4.9)g/g,然后下降。同时,研究了pH值和离子强度对水凝胶溶胀率的影响,pH值从2.2增加到7.8时,水凝胶的溶胀率从(31.3±2.5)g/g增加到(42.7±3.2)g/g,pH值进一步增大,溶胀率降低;溶液中离子强度从0mol/L增加到0.15mol/L,水凝胶溶胀率从(36.2±2.6)g/g降低到(21.4±1.4)g/g。本研究为制备快速响应pH水凝胶提供了一种新方法。

关键词：纤维素聚丙烯酸接枝 pH响应水凝胶