检索结果-南通市图书馆

Possible Origin of a Newly Discovered GeV Gamma-Ray Source Fermi J1242.5+3236

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2023年第2期23卷 99-106页

作者： Xiu-Rong Mo ming-hong luo hong-Bin Tan Qing-Wen Tang Ruo-Yu Liu Department of Physics School of Physics and Materials ScienceNanchang UniversityNanchang 330031China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China

Based on the first 13.4 yr of Fermi science data in the energy range from 300 Me V to 500 Ge V,we discovered a bright Ge V gamma-ray source with a ~5.64σ detection,named Fermi J1242.5+3236,which has an offset of about0°.0996 from a nearby star-forming galaxy NGC *** using the 12 yr’ data,the detection significance of Fermi J1242.5+3236 is about 4.72σ.Fermi J1242.5+3236 is a steady point source without significant temporal variability and has a hard gamma-ray photon index of about-1.60 ± *** spatial offset and the hard gammaray spectrum disfavor this source as the diffuse gamma-ray emission from this *** new source might have a possible origin of an unidentified background blazar,which is more likely a high-synchrotron-peaked blazar for its hard gamma-ray photon index.A follow-up optical observation would help distinguish origin of Fermi J1242.5+3236.

关键词： galaxies starburst-galaxies star formation-gamma-rays galaxies-galaxies active

在线全文

学校读者我要写书评

暂无评论

乡村公共图书馆定位研究

图书馆理论与实践 2017年第4期 57-60页

作者：贺洪明罗静中共贵州省委党校图书馆贵州省图书馆

我国学者对公共图书馆的理论研究长期停留在县级以上公共图书馆,对县级以下基层公共图书馆的理论研究较少涉及,从一定程度上影响了基层公共图书馆事业的可持续发展。文章通过对我国乡村公共图书馆的性质、特征和职能的定位研究,以探索... 详细信息

我国学者对公共图书馆的理论研究长期停留在县级以上公共图书馆,对县级以下基层公共图书馆的理论研究较少涉及,从一定程度上影响了基层公共图书馆事业的可持续发展。文章通过对我国乡村公共图书馆的性质、特征和职能的定位研究,以探索理论知识来指导其实践的发展,既有利于完善乡村公共图书馆基本理论体系,也为改进乡村公共图书馆发展策略提供理论依据。

关键词：乡村公共图书馆性质定位基本特征职能定位

进步主义与保守主义教育的冲突与融合——基于“要素学校联盟”教育改革的思考

在线全文

学校读者我要写书评

暂无评论

教育理论与实践 2016年第11期36卷 8-11页

作者：洪明罗福益福建师范大学教育学院福建福州350117

"要素学校联盟"是美国当前具有进步主义教育取向的校际联合组织。它要求培养学生的心智习惯、造就优秀公民,在教育目标上与美国当代保守主义主导的改革具有一致之处,但其倡导的综合课程、问题学习、民主管理、质性评价等教育理念,与保... 详细信息

"要素学校联盟"是美国当前具有进步主义教育取向的校际联合组织。它要求培养学生的心智习惯、造就优秀公民,在教育目标上与美国当代保守主义主导的改革具有一致之处,但其倡导的综合课程、问题学习、民主管理、质性评价等教育理念,与保守主义者主张的分科课程、知识传授、外部强制、标准化考试形成了对峙,展示了两者间在新的社会历史条件下既冲突又融合的关系。"要素学校联盟"的改革目前虽然在美国的主流教育改革中还只处于边缘地位,但它对走向决绝和偏执的保守主义改革能够起到警示和纠偏的作用。

关键词：进步主义教育保守主义教育 “要素学校联盟”

Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： Pengfei Wang Yuewei Bi Min Li Jiazhi Chen Zhuyong Wang Huantao Wen ming Zhou Minjie luo Wangming Zhang Neurosurgery Center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

Exploring practical methods for detecting k-nonseparability in multipartite quantum states

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 255-256页

作者： Shunlong luo Academy of Mathematics and Systems Science Chinese Academy of Sciences

Quantum entanglement, referred to as “spooky action at a distance” by Einstein, is not only an intriguing and fascinating feature of quantum theory challenging our classical intuitions about locality and correlations, but also has practical and profound implications for quantum technologies. Initially described by Einstein, Podolsky and Rosen, as well as by Schro¨dinger, entanglement now has become a basic and crucial ingredient for both foundational and experimental investigations of the quantum world.

关键词：

Effect of Bi/Si Ratio of BiBSi Glass on Its Structure, Properties and Laser Sealing Shear Strength for Vacuum Glazing

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 13-24页

作者： LIU Wei JIAO Jinxu luo Dusha ZHOU Junjie SHI Lifen WANG Weiwei LI Changqing WANG Peng XIONG Dehua LI hong State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Silica-Based Materials Laboratory of Anhui Province CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu 233018China State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu 233018China

The low-melting glass of Bi2O_(3)-B2O_(3)-SiO_(2)(BiBSi)system was used for the first time for laser sealing of vacuum *** the condition of constant boron content,how the structure and properties vary with Bi/Si ratio in low-melting glass was *** addition,the relationships between laser power,low-melting glass solder with different Bi/Si ratios and laser sealing shear strength were *** results show that a decrease in the Bi/Si ratio can cause a contraction of the glass network of the low-melting glass,leading to an increase of its characteristic temperature and a decrease of its coefficient of thermal *** laser sealing,the copper ions in the low-melting glass play an endothermic role.A change in the Bi/Si ratio will affect the valence state transition of the copper ions in the low-melting *** absorbance of the low-melting glass does not follow the expected correlation with the Bi/Si ratio,but shows a linear correlation with the content of divalent copper *** greater the concentration of divalent copper ions,the greater the absorbance of the low-melting glass,and the lower the laser power required for laser *** shear strength of the low melting glass solder after laser sealing was tested,and it was found that the maximum shear strength of Z1 glass sample was the highest up to 2.67 MPa.

关键词： Bi2O_(3)-B2O_(3)-SiO_(2)(BiBSi) Bi/Si ratio low-melting glass laser sealing vacuum glazing

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

矿区土地修复与生态恢复

土壤学报 2003年第2期40卷 161-169页

作者：黄铭洪骆永明香港浸会大学自然资源与环境管理研究所中国科学院南京土壤研究所土壤与环境生物修复研究中心南京210008

本文在回顾中国矿区土地修复与恢复重建研究工作的历史基础上 ,着重从土壤科学与生态学的角度综述 (1 )矿区土地修复与生态恢复的限制因素 ;(2 )矿区退化土壤的物理和化学修复 ;(3 )矿区金属污染土壤的植物稳定和提取修复 ;(4 )矿区污... 详细信息

本文在回顾中国矿区土地修复与恢复重建研究工作的历史基础上 ,着重从土壤科学与生态学的角度综述 (1 )矿区土地修复与生态恢复的限制因素 ;(2 )矿区退化土壤的物理和化学修复 ;(3 )矿区金属污染土壤的植物稳定和提取修复 ;(4 )矿区污染土壤的植物 -微生物及动物协同修复 ;(5 )矿区土地修复的技术要求与管理 ;(6)矿区土地修复与生态恢复的未来研究与发展。旨在推动中国矿区土地资源修复与生态环境恢复的理论研究和技术发展。

关键词：矿区土地修复生态恢复土地复垦重金属

Study on hepatocelluar carcinoma-associated hepatic arteriovenous shunt using multidetector CT

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2003年第11期9卷 2455-2459页

作者： ming-Yue luo hong Shan Zai-Bo Jiang Lu-Fang Li Hui-Qing Huang, Department of Radiology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, Guangdong Province, China ming-Yue luo Hong Shan Zai-Bo Jiang Lu-Fang Li Hui-Qing Huang Department of Radiology the Third Affiliated Hospital Sun Yat-Sen University Guangzhou 510630 Guangdong Province China

AIM: To investigate multidetector CT (MDCT) findings of hepatocelluar carcinoma (HCC)-associated hepatic arteriovenous shunt (HAVS) and to evaluate their clinical significance. METHODS: Thin-slice and dynamic enhancement MDCT of HAVS was performed on 56 patients with HCC. MDCT findings, including those of portal veins, hepatic veins, superior mesenteric veins, splenic veins, HCC loci, liver parenchyma without HCC loci, spleens, and thromboses in portal veins and hepatic veins, were all confirmed by digital subtract angiography and analyzed. RESULTS: MDCT demonstrated earlier enhancement of main portal trunks and/or the first order branches than that of superior mesenteric veins or splenic veins (n=-31). One patient had strong early enhancement of left hepatic vein with thromboses in left hepatic vein and upper part of inferior vena cava and 1 patient had transient patchy enhancement peripheral to HCC loci in late hepatic arterial phase among them. It demonstrated stronger opacification of main portal trunks and/or the first order branches than that of superior mesenteric veins or splenic veins (n=18), and earlier enhancement of the second order and smaller branches of portal veins than that of main portal trunks (n=4), stronger opacification of the second order and smaller branches of portal veins than that of main portal trunks (n=3), with transient patchy enhancement (n=3) or wedge-shaped enhancement (n=4) peripheral to HCC foci in late hepatic arterial phase. Enhancement degree of HCC loci was all decreased. As for 49 patients with severe or moderate shunts, enhancement degree of liver parenchyma without HCC loci was increased with heterogeneous density, but enhancement degree of spleens was decreased. There were thromboses in main portal trunks and/or the first order branches in 32 patients. CONCLUSION: The main MDCT findings of HCC-associated HAVS are earlier enhancement and stronger opacification of portal veins and/or hepatic veins. Understanding of these fin

关键词：肝动静脉吻合流术肝细胞癌多层螺旋CT 临床意义预后诊断

Tilting homeostatic and dyshomeostatic microglial balance in health and disease:transforming growth factor-beta1 as a critical protagonist

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第10期20卷 2895-2897页

作者： Nicolas Hugues Yu luo Department of Molecular and Cellular Biosciences University of CincinnatiCincinnatiOHUSA Neuroscience Graduate Program University of CincinnatiCincinnatiOHUSA Division of Immunobiology Cincinnati Children’s Hospital Medical CenterUniversity of Cincinnati College of MedicineCincinnatiOHUSA

Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the *** the healthy central nervous system(CNS),microglia display a unique molecular homeostatic signature(i.e.,Tmem119,P2ry12,Sall1,Siglech,Gpr34,and Hexb)(Figure 1A).

关键词： Figure signature critical