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Multicolor photometry of the nearby galaxy cluster A119

Research in Astronomy and Astrophysics 2012年第10期12卷 1381-1401页

作者： jin-tao tian Qi-Rong Yuan Xu Zhou Zhao-Ji Jiang Jun Ma Jiang-Hua Wu Zhen-Yu Wu tian-Meng Zhang Hu Zou National Astronomical Observatories Chinese Academy of Sciences Beiiing 100012 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academyof Sciences Beijing 100012 China Department of Physics Nanjing Normal University Nanjing 210046 China Department of Astronomy Beijing Normal University Beijing 100875 China

This paper presents multicolor optical photometry of the nearby galaxy cluster Abell 119 （z = 0.0442） with the Beijing-Arizona-Taiwan-Connecticut system of 15 intermediate bands. Within the BATC field of view of 58＇× 58＇, there are 368 galaxies with known spectroscopic redshifts, including 238 member galaxies （called sample I）. Based on the spectral energy distributions of 1376 galaxies brighter than iBATC ---- 19.5, the photometric redshift technique and the color-magnitude relation of early-type galaxies are applied to select faint member galaxies. As a result, 117 faint galaxies were selected as new member galaxies. Combined with sample I, an enlarged sample （called sample II） of 355 member galaxies is obtained. Spatial distribution and localized velocity structure for two samples demonstrate that A119 is a dynami- cally complex cluster with at least three prominent substructures in the central region within 1 Mpc. A large velocity dispersion for the central clump indicates a merging along the line of sight. No significant evidence for morphology or luminosity segrega- tions is found in either sample. With the PEGASE evolutionary synthesis model, the environmental effect on the properties of star formation is confirmed. Faint galaxies in the low-density region tend to have longer time scales of star formation, smaller mean stellar ages, and lower metallicities in their interstellar medium, which is in agreement with the context of the hierarchical cosmological scenario.

关键词： galaxies: clusters: individual (A119)- galaxies: distances and redshifts-- galaxies: evolution-- galaxies: kinematics and dynamics-- methods: data analysis

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Synthesis of Sintered Galaxite Clinker for Chrome-free Bricks

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China's Refractories 2009年第2期18卷 8-11页

作者： LI Yawei jin Shengli XIANG tao tian Cailan LI Yuanbing ZHAO Lei The Hubei Province Key Laboratory of Ceramics and Refractories Wuhan University of Science and Technology Wuhan 430081 China

Galaxite clinker as refractory starting material has been fabricated using chemically pure MnO2 and Al2O3 as starting materials at various processing atmospheres and temperatures under the guidance of thermodynamic simulation. A dense galaxite clinker can be synthesized at low cost under 0. 04% -99. 98% CO partial pressure created by coke bed in sealed sagger.

关键词： Galaxite Synthesis Sintering Chromefree Thermodynamic simulation

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柴油机模糊诊断专家系统的研究

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内燃机工程 2007年第4期28卷 65-68页

作者：宋平苏万华裴毅强陶金田天津大学内燃机燃烧学国家重点试验室天津300072

介绍了一种以关系数据库为基础的机车柴油机多征兆模糊故障诊断专家系统,研究了多征兆模糊产生式规则的诊断知识表示和知识库的建立;利用ADO技术实现对知识库的访问和诊断管理。在柴油机故障诊断应用中,该数据库取得了良好的效果。

关键词：内燃机柴油机多征兆模糊诊断专家系统数据库

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Smart Gas Sensors: Recent Developments and Future Prospective

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NANO-MICRO LETTERS 2025年第1期17卷 1-32页

作者： Zong, Boyang Wu, Shufang Yang, Yuehong Li, Qiuju tao, tian Mao, Shun Tongji Univ Biomed Multidisciplinary Innovat Res Inst Coll Environm Sci & Engn Shanghai East HospState Key Lab Pollut Control & 1239 Siping Rd Shanghai 200092 Peoples R China Shanghai Inst Pollut Control & Ecol Secur Shanghai 200092 Peoples R China Southern Med Univ Zhujiang Hosp Microbiome Med Ctr Dept Lab Med Guangzhou 510280 Peoples R China

Recent developments of advanced electronic and optoelectronic gas sensors are *** array with artificial intelligence algorithms and smart gas sensors in "Internet of Things" paradigm are *** of smart gas sensors in environmental monitoring, medical and healthcare applications, food quality control, and public safety are described. Gas sensor is an indispensable part of modern society with wide applications in environmental monitoring, healthcare, food industry, public safety, etc. With the development of sensor technology, wireless communication, smart monitoring terminal, cloud storage/computing technology, and artificial intelligence, smart gas sensors represent the future of gas sensing due to their merits of real-time multifunctional monitoring, early warning function, and intelligent and automated feature. Various electronic and optoelectronic gas sensors have been developed for high-performance smart gas analysis. With the development of smart terminals and the maturity of integrated technology, flexible and wearable gas sensors play an increasing role in gas analysis. This review highlights recent advances of smart gas sensors in diverse applications. The structural components and fundamental principles of electronic and optoelectronic gas sensors are described, and flexible and wearable gas sensor devices are highlighted. Moreover, sensor array with artificial intelligence algorithms and smart gas sensors in "Internet of Things" paradigm are introduced. Finally, the challenges and perspectives of smart gas sensors are discussed regarding the future need of gas sensors for smart city and healthy living.

关键词： Smart gas sensor Electronic sensor Optoelectronic sensor Flexible and wearable sensor Artificial intelligence

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钢筋套筒灌浆连接装配式剪力墙结构三层足尺模型子结构拟动力试验

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建筑结构学报 2017年第3期38卷 26-38页

作者：钱稼茹韩文龙赵作周秦珩张芸于劲马涛田东清华大学土木工程安全与耐久教育部重点实验室北京100084 北京住总万科房地产开发有限公司北京100125 北京住宅建筑设计研究院有限公司北京100055 北京市建筑设计研究院有限公司北京100045

为研究钢筋套筒灌浆连接装配式剪力墙结构的抗震性能,完成了1个3层足尺模型在不同强度地震作用下的子结构拟动力试验,观察其破坏现象,研究其滞回特性、变形能力、刚度退化和钢筋屈服次序等。结果表明:试验模型的破坏集中在地震作用方向... 详细信息

为研究钢筋套筒灌浆连接装配式剪力墙结构的抗震性能,完成了1个3层足尺模型在不同强度地震作用下的子结构拟动力试验,观察其破坏现象,研究其滞回特性、变形能力、刚度退化和钢筋屈服次序等。结果表明:试验模型的破坏集中在地震作用方向的连梁和窗下墙,连梁以弯曲破坏为主,窗下墙为剪切破坏,首层墙肢出现轻微的弯曲破坏;试验过程中,连梁纵筋、墙肢竖向钢筋及连梁箍筋依次受拉屈服,试验模型实现了"强墙肢弱连梁"及连梁"强剪弱弯"的设计目标;8度多遇、设防和罕遇地震以及9度罕遇地震作用下,试验模型的抗侧刚度分别降低约5%、20%、60%和80%,对应的最大层间位移角分别为1/3 341、1/899、1/268和1/111,以层间位移角为参数,结构的破坏程度分别为完好、轻微损坏、中等破坏和倒塌;"预制底板出筋"和"预制底板不出筋"的双向叠合楼板均具有良好的整体性和平面内刚度,均可起到水平刚性隔板作用;墙体一字形截面竖向后浇段采用由2根U形钢筋组成的封闭箍代替普通箍筋具有可行性;预制夹心保温外墙的内、外叶墙之间连接可靠,外叶墙不参与结构受力,结构设计时可不考虑外叶墙的作用。

关键词：装配式剪力墙结构钢筋套筒灌浆连接 3层足尺模型子结构拟动力试验抗震性能

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低场强MRI对膝关节半月板损伤的临床诊断

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吉林医学 2012年第32期33卷 7032-7033页

作者：靳天涛江苏省大丰市人民医院影像科江苏大丰224100

目的:探讨膝关节半月板损伤的MRI的临床诊断价值。方法:回顾性分析48例半月板损伤患者的MRI表现,并按StoUer半月板退变和损伤的MRI分级标准进行分级。结果:48例48个半月板损伤中,Ⅰ级损伤5个,Ⅱ级损伤15个,Ⅲ级损伤28个,经外科手术、关... 详细信息

目的:探讨膝关节半月板损伤的MRI的临床诊断价值。方法:回顾性分析48例半月板损伤患者的MRI表现,并按StoUer半月板退变和损伤的MRI分级标准进行分级。结果:48例48个半月板损伤中,Ⅰ级损伤5个,Ⅱ级损伤15个,Ⅲ级损伤28个,经外科手术、关节镜证实。结论:MRI是一种无创性的、能准确诊断半月板损伤的成像方法,能为临床治疗提供可靠的依据,是目前诊断半月板损伤最好的检查方法。

关键词：膝关节半月板损伤磁共振成像

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Nanocarrier-mediated siRNA delivery:a new approach for the treatment of traumatic brain injury-related Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2538-2555页

作者： Jie jin Huajing Zhang Qianying Lu Linqiang tian Sanqiao Yao Feng Lai Yangfan Liang Chuanchuan Liu Yujia Lu Sijia tian Yanmei Zhao Wenjie Ren Institute of Disaster and Emergency Medicine Tianjin UniversityTianjinChina Key Laboratory for Disaster Medicine Technology TianjinChina Henan Medical Key Laboratory for Research of Trauma and Orthopedics The Third Affiliated Hospital of Xinxiang Medical UniversityXinxiangHenan ProvinceChina Clinical Medical Center of Tissue Engineering and Regeneration Xinxiang Medical UniversityXinxiangHenan ProvinceChina Institutes of Health Central Plain Xinxiang Medical UniversityXinxiangHenan ProvinceChina School of Public Health Xinxiang Medical UniversityXinxiangHenan ProvinceChina

Traumatic brain injury and Alzheimer's disease share pathological similarities,including neuronal loss,amyloid-βdeposition,tau hyperphosphorylation,blood-brain barrier dysfunction,neuroinflammation,and cognitive ***,traumatic brain injury can exacerbate Alzheimer's disease-like pathologies,potentially leading to the development of Alzheimer's *** offer a potential solution by facilitating the delive ry of small interfering RNAs across the blood-brain barrier for the targeted silencing of key pathological genes implicated in traumatic brain injury and Alzheimer's disease.U nlike traditional approaches to neuro regeneration,this is a molecula r-targeted strategy,thus avoiding non-specific drug *** review focuses on the use of nanocarrier systems for the efficient and precise delive ry of siRNAs,discussing the advantages,challenges,and future *** principle,siRNAs have the potential to target all genes and non-targetable protein s,holding significant promise for treating various *** the various therapeutic approaches currently available for neurological diseases,siRNA gene silencing can precisely"turn off"the expression of any gene at the genetic level,thus radically inhibiting disease progression;however,a significant challenge lies in delivering siRNAs across the blood-brain *** have received increasing attention as an innovative drug delive ry tool fo r the treatment of brain *** are considered a potential therapeutic strategy with the advantages of being able to cross the blood-brain barrier,targeted drug delivery,enhanced drug stability,and multifunctional *** use of nanoparticles to deliver specific modified siRNAs to the injured brain is gradually being recognized as a feasible and effective *** this strategy is still in the preclinical exploration stage,it is expected to achieve clinical translation in the future,creating a new field of molecular tar

关键词： blood-brain barrier cognitive dysfunction exosomes gene silencing immunotherapy inorganic nanomaterials liposome nanoparticles neuroinflammation polymer nanoparticles stem cells

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Enhancing m^(6)A modification in the motor cortex facilitates corticospinal tract remodeling after spinal cord injury

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Neural Regeneration Research 2025年第6期20卷 1749-1763页

作者： tian Qin Yuxin jin Yiming Qin Feifei Yuan Hongbin Lu Jianzhong Hu Yong Cao Chengjun Li Department of Spine Surgery and Orthopedics Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan ProvinceChangshaHunan ProvinceChina National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Department of Sports Medicine Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina

Spinal cord injury typically causes corticospinal tract disruption. Although the disrupted corticospinal tract can self-regenerate to a certain degree, the underlying mechanism of this process is still unclear. N6-methyladenosine(m^(6)A) modifications are the most common form of epigenetic regulation at the RNA level and play an essential role in biological processes. However, whether m^(6)A modifications participate in corticospinal tract regeneration after spinal cord injury remains unknown. We found that expression of methyltransferase 14 protein(METTL14) in the locomotor cortex was high after spinal cord injury and accompanied by elevated m^(6)A levels. Knockdown of Mettl14 in the locomotor cortex was not favorable for corticospinal tract regeneration and neurological recovery after spinal cord injury. Through bioinformatics analysis and methylated RNA immunoprecipitation-quantitative polymerase chain reaction, we found that METTL14 regulated Trib2 expression in an m^(6)A-regulated manner, thereby activating the mitogen-activated protein kinase pathway and promoting corticospinal tract regeneration. Finally, we administered syringin, a stabilizer of METTL14, using molecular docking. Results confirmed that syringin can promote corticospinal tract regeneration and facilitate neurological recovery by stabilizing METTL14. Findings from this study reveal that m^(6)A modification is involved in the regulation of corticospinal tract regeneration after spinal cord injury.

关键词： corticospinal tract remodeling epigenetic regulations locomotor cortex m^(6)A modification methyltransferase 14 protein(METTL14) mitogen-activated protein kinase neural regeneration spinal cord injury syringin TRIB2

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椎体终板炎不常见的MR表现(附14例分析)

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中国CT和MRI杂志 2010年第6期8卷 65-67页

作者：赵文靳天涛江苏省大丰市中医院影像科 224100 江苏省大丰市人民医院影像科

目的介绍和探讨椎体终板炎(Ⅰ型)不常见的MR表现,提高此类疾病的影像学诊断水平。方法对经临床和活检证实的14例椎体终板炎病例不典型MR表现做了回顾,总结和归纳了该病的临床及影像学的一些特征。结果病变区主要异常征象:T1WI低信号、T... 详细信息

目的介绍和探讨椎体终板炎(Ⅰ型)不常见的MR表现,提高此类疾病的影像学诊断水平。方法对经临床和活检证实的14例椎体终板炎病例不典型MR表现做了回顾,总结和归纳了该病的临床及影像学的一些特征。结果病变区主要异常征象:T1WI低信号、T2WI高信号即水肿改变(12例)并多与Schmorl结节伴随;T1WI低信号、T2WI混杂信号即毁损与修复改变(2例);椎间盘强化1例;其他包括椎间盘退变或突出、椎体的脂肪沉积等等。结论椎体终板炎(Ⅰ型)其不常见的MR表现经病变特征分析并结合临床能够做出相应正确诊断。需要与其鉴别的疾病有:椎体感染、椎体结核、椎体转移瘤。

关键词：椎体终板骨软骨炎磁共振成像

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腰椎椎小关节滑膜囊肿MRI诊断2例

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中国医学影像技术 2010年第8期26卷 1420-1420页

作者：赵文靳天涛大丰市中医院影像科江苏盐城224100 大丰市人民医院磁共振室江苏盐城224100

例1,女,72岁。左下肢痛2月余,进行性加重。腰椎平片示退行性变,CT扫描示腰5骶1椎管左侧肿物,临床疑为神经源性肿瘤。MR平扫示腰5骶1椎管左侧椎小关节内前方囊性肿物,硬膜囊及左侧神经根受压,并椎小关节明显退行性改变增强扫描见肿物壁... 详细信息

例1,女,72岁。左下肢痛2月余,进行性加重。腰椎平片示退行性变,CT扫描示腰5骶1椎管左侧肿物,临床疑为神经源性肿瘤。MR平扫示腰5骶1椎管左侧椎小关节内前方囊性肿物,硬膜囊及左侧神经根受压,并椎小关节明显退行性改变增强扫描见肿物壁不规则强化,肿物直径为1.5 cm（图1）MRI诊断：椎小关节滑膜囊肿。经手术及病理证实。

关键词：腰椎滑膜囊肿磁共振成像

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