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Discovery of Three Large HII Regions in the Galactic Plane

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Chinese Journal of Astronomy and Astrophysics 2008年第5期8卷 575-579页

作者： Wei-Bin Shi Xiao-Hui Sun Jin-Lin Han xu-yang gao Li Xiao National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Department of Space Science and Applied Physics Shandong University at Weihai Weihai 264209 China

We discovered three large HⅡ regions： G148.8＋2.3, G149.5＋0.0 and G169.9＋2.0 in the Sino-German A6 cm polarization survey of the Galactic plane. They have been identified based on the flat spectral indexes and the... 详细信息

关键词： radio continuum general - methods observational - HⅡ regions

A polarization study of the supernova remnant CTB 80

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Research in Astronomy and Astrophysics 2020年第11期20卷 312-320页

作者： Xiang-Hua Li Xiao-Hui Sun Wolfgang Reich xu-yang gao Department of Astronomy Yunnan Universityand Key Laboratory of Astroparticle Physics of Yunnan ProvinceKunming 650091China Max-Planck-Institut fur Radioastronomie Auf dem Hugel 6953121 BonnGermany National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

We present a radio polarization study of the supernova remnant CTB 80 based on images at1420 MHz from the Canadian Galactic Plane Survey,at 2695 MHz from the Effelsberg survey of the Galactic plane and at 4800 MHz from the Sino-Germanλ6 cm polarization survey of the Galactic *** obtained a rotation measure(RM)map using polarization angles at 2695 MHz and 4800 MHz as the polarization percentages are similar at these two *** exhibits a transition from positive values to negative values along one of the shells hosting the pulsar PSR B1951+32 and its pulsar wind *** reason for the change in sign remains *** identified a partial shell structure,which is bright in polarized intensity but weak in total *** structure could be part of CTB 80 or part of a new supernova remnant unrelated to CTB 80.

关键词： ISM supernova remnants ISM magnetic fields polarization techniques polarimetric

Simple and Mild Syntheses of Optically Active 2-(N,N-Dialkylamino)oxazolines

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Chemical Research in Chinese Universities 2010年第3期26卷 394-397页

作者： JIA xu-dong DUAN Hai-feng LIN Ying-jie CAO Jun-gang LIANG Da-peng LUO xu-yang JIANG Feng gao Han WU Mao-cheng Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

Chloroamidinium salts and a-amino alcohols derived from commercially available tetraalkyl ureas and α-amino acids, respectively, can be used for the syntheses of optically active 2-（N,N-dialkylamino）oxazolines in moderate to excellent yields without any catalyst. It is a simple and mild method for the syntheses of optically active oxazolines

关键词： Amino alcohol Oxazoline Chloroamidinium salt Guanidine

V0644 Ser:An Active Ultrashort Period Contact Binary Star

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Research in Astronomy and Astrophysics 2022年第12期22卷 252-262页

作者： Hu-Shan xu Li-Ying Zhu Sarotsakulchai Thawicharat Soonthornthum Boonrucksar Yunnan Observatories Chinese Academy of Sciences(CAS)Kunming 650216China University of the Chinese Academy of Sciences Beijing 100049China Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650216China National Astronomical Research Institute of Thailand 191 Siriphanich Bldg.Huay Kaew Rd.Chiang Mai 50200Thailand

The photometric solutions of the ultrashort period close binary V0644 Ser based on our new complete BVRI light curves are derived by the Wilson–Devininney *** results show that V0644 Ser is a W-type shallow contact binary,and the third light was found in the R and I *** with the light curves in 2011,the amplitude variation of the secondary maximum can be explained by the temperature change from hot to cold in the local region of the star surface caused by magnetic activity or convective *** with the Gaia parallax,the absolute parameters of this system are obtained:M_(1)=0.29(4)M_(⊙),R_(1)=0.48(3)R_(⊙),R_(2)=0.65(3)R_(⊙),L_(1)=0.11(2)L_(⊙),L_(2)=0.16(2)L_(⊙)=0.16(2)L_(⊙).To study the period variation,we fitted the Super WASP,CSS,ASAS-SN and ZTF survey timing data to obtain light minima times spanning 14 *** O-C analysis,we find that the orbital period of this system has a long-term period decrease and periodic *** long-term period decrease can be explained by the mass transfer from more-massive component to less one and angular momentum loss via magnetic stellar *** the period decrease,this system is evolving from the present shallow contact phase to a relatively deeper stage predicted by the thermal relaxation oscillation *** oscillation can be explained by the light-time effect of the cool third *** third body may play an important role in the early formation and evolution of the binary system by removing angular momentum.

关键词： (stars:)binaries(including multiple):close (stars:)binaries:eclipsing stars:late-type stars:individual(V0644 Ser)

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New continuum and polarization observations of the Cygnus Loop with FAST *** processing and verification

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Research in Astronomy and Astrophysics 2021年第11期21卷 105-118页

作者： Xiao-Hui Sun Mei-Niang Meng xu-yang gao Wolfgang Reich Peng Jiang Di Li Hui-Rong Yan Xiang-Hua Li Department of Astronomy Yunnan UniversityKunming 650500China National Astronomical Observatories Chinese Academy of Sciences20A Datun RoadChaoyang DistrictBeijing 100101China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Max-Planck-Institut fur Radioastronomie Auf dem Hugel 6953121 BonnGermany Deutsches Elektronen-Synchrotron DESY Platanenallee 6D-15738 ZeuthenGermany Institut fur Physik und Astronomie Universitat PotsdamHaus 28Karl-Liebknecht-Str.24/25D-14476 PotsdamGermany

We report on the continuum and polarization observations of the Cygnus Loop supernova remnant(SNR)conducted by the Five-hundred-meter Aperture Spherical radio Telescope(FAST).FAST observations provide high angular resolution and high sensitivity images of the SNR,which will help to disentangle its *** obtained Stokes I,Q and U maps over the frequency range of 1.03-1.46 GHz split into channels of 7.63 *** original angular resolution is in the range of~3’-~3.’8,and we combined all the data at a common resolution of 4’.The temperature scale of the total intensity and the spectral index from the in-band temperature-temperature plot are consistent with previous observations,which validates the data calibration and map-making *** rms sensitivity for the band-averaged total-intensity map is about 20 mK in brightness temperature,which is at the level of confusion *** the first time,we apply rotation measure(RM)synthesis to the Cygnus Loop to obtain the polarization intensity and RM *** rms sensitivity for polarization is about 5 mK,far below the total-intensity confusion *** also obtained RMs of eight extragalactic sources,and demonstrate that the wide-band frequency coverage helps to overcome the ambiguity of RM determinations.

关键词： ISM:supernova remnants ISM:magnetic fields polarization techniques:polarimetric

Induced neural stem cells regulate microglial activation through Akt-mediated upregulation of CXCR4 and Crry in a mouse model of closed head injury

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Neural Regeneration Research 2025年第5期20卷 1416-1430页

作者： Mou gao Qin Dong Dan Zou Zhijun yang Lili Guo Ruxiang xu Department of Neurosurgery Sichuan Academy of Medical Sciences and Sichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengduSichuan ProvinceChina Department of Neurosurgery Chinese PLA General HospitalBeijingChina Department of Neurology Fu Xing HospitalCapital Medical UniversityBeijingChina

Microglial activation that occurs rapidly after closed head injury may play important and complex roles in neuroinflammation-associated neuronal damage and *** previously reported that induced neural stem cells can modulate the behavior of activated microglia via CXCL12/CXCR4 signaling,influencing their activation such that they can promote neurological ***,the mechanism of CXCR4 upregulation in induced neural stem cells remains *** this study,we found that nuclear factor-κB activation induced by closed head injury mouse serum in microglia promoted CXCL12 and tumor necrosis factor-αexpression but suppressed insulin-like growth factor-1 ***,recombinant complement receptor 2-conjugated Crry(CR2-Crry)reduced the effects of closed head injury mouse serum-induced nuclear factor-κB activation in microglia and the levels of activated microglia,CXCL12,and tumor necrosis factor-α.Additionally,we observed that,in response to stimulation(including stimulation by CXCL12 secreted by activated microglia),CXCR4 and Crry levels can be upregulated in induced neural stem cells via the interplay among CXCL12/CXCR4,Crry,and Akt signaling to modulate microglial *** agreement with these in vitro experimental results,we found that Akt activation enhanced the immunoregulatory effects of induced neural stem cell grafts on microglial activation,leading to the promotion of neurological recovery via insulin-like growth factor-1 secretion and the neuroprotective effects of induced neural stem cell grafts through CXCR4 and Crry upregulation in the injured cortices of closed head injury ***,these beneficial effects of Akt activation in induced neural stem cells were positively correlated with the therapeutic effects of induced neural stem cells on neuronal injury,cerebral edema,and neurological disorders post–closed head *** conclusion,our findings reveal that Akt activation may enhance the immunoregulatory effects of induced neura

关键词： Akt signaling cerebral edema closed head injury Crry CXCR4 induced neural stem cell microglia neuroinflammation

Inhibition of the cGAS–STING pathway:contributing to the treatment of cerebral ischemia-reperfusion injury

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Neural Regeneration Research 2025年第7期20卷 1900-1918页

作者： Hang yang Yulei Xia Yue Ma Mingtong gao Shuai Hou Shanshan xu Yanqiang Wang School of Clinical Medicine Shandong Second Medical UniversityWeifangShandong ProvinceChina Department of Emergency The Affiliated Hospital of Weifang Medical UniversityWeifangShandong ProvinceChina Department of Neurology Ⅱ The Affiliated Hospital of Weifang Medical UniversityWeifangShandong ProvinceChina

The cGAS–STING pathway plays an important role in ischemia-reperfusion injury in the heart,liver,brain,and kidney,but its role and mechanisms in cerebral ischemia-reperfusion injury have not been systematically ***,we outline the components of the cGAS–STING pathway and then analyze its role in autophagy,ferroptosis,cellular pyroptosis,disequilibrium of calcium homeostasis,inflammatory responses,disruption of the blood–brain barrier,microglia transformation,and complement system activation following cerebral ischemia-reperfusion *** further analyze the value of cGAS–STING pathway inhibitors in the treatment of cerebral ischemia-reperfusion injury and conclude that the pathway can regulate cerebral ischemia-reperfusion injury through multiple *** of the cGAS–STING pathway may be helpful in the treatment of cerebral ischemia-reperfusion injury.

关键词： calcium homeostasis cellular autophagy cerebral ischemia-reperfusion injury cGAS–STING pathway ferroptosis gut–brain–microbiota axis inflammatory light chain 3 microglial cells Syntaxin-17 protein

Surgical staged treatment for moderate to severe adolescent cervical kyphosis

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Chinese Medical Journal 2011年第23期124卷 3864-3867页

作者： LIANG Lei ZHOU xu-hui LIU yang gao Rui CHEN Hua-jiang yang Li-li SHI Sheng YUAN Wen Department of Spine Surgery Changzheng Orthopaedics Hospital the Second Military Medical University Shanghai 200003 China

Adolescent cervical kyphosis refers to manifestation characterized by loss of physiological cervical lordosis with involvement of multiple cervical vertebrae. There is no standard treatment strategy for this disease, especially in those patients who need surgical intervention. The aim of this study was to evaluate the surgical staged treatment for moderate to severe adolescents cervical kyphosis. Methods A total of 26 adolescent with cervical kyphosis were retrospectively assigned into following two groups according to the magnitude of kyphosis： moderate group （n=17）, the Cobb angle was 46.6°±4.8°. The surgical procedure was that skull traction was first carried out for 5-7 days and then the anterior fusion and instrumentation were performed. Severe group （n=-9）, the Cobb angle was 61.6°±4.8°. The treatment strategy was that the anterior release were first performed, followed by skull traction for 7-10 days, and then anterior fusion were performed. Radiographic evaluation was performed postoperatively. Results Three days after surgery, the X-ray examination showed that the Cobb angle was -8.9°±6.8° in the moderate group and -6.0°±6.3° in the severe group. The deformed appearance was obviously corrected, with neck pain and neurologic function improved significantly. Further magnetic resonance imaging （MRI） indicated the physiology curvature of the cervical spine had been reconstructed. Conclusion Surgical staged treatment may be an ideal therapeutic intervention for cervical kyphosis patients with a Cobb angle exceeding 35° in adolescents.

关键词： cervical vertebrae kyphosis staged treatment adolescent

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骨保护素系统与动脉粥样硬化的关系

中国动脉硬化杂志 2010年第12期18卷 1004-1008页

作者：徐高阳罗助荣福建中医药大学研究生部福建省福州市350108 解放军南京军区福州总医院心内科福建省福州市350025

自最初发现骨保护素(OPG)对骨骼新陈代谢有重要的调节功能以来,因其在血管性疾病和钙化中发挥的重要作用已经引起了人们的广泛关注。在动物模型和临床研究中发现,骨保护素不仅能抑制动脉粥样硬化,而且其血清水平随着血管硬化、冠状动脉... 详细信息

自最初发现骨保护素(OPG)对骨骼新陈代谢有重要的调节功能以来,因其在血管性疾病和钙化中发挥的重要作用已经引起了人们的广泛关注。在动物模型和临床研究中发现,骨保护素不仅能抑制动脉粥样硬化,而且其血清水平随着血管硬化、冠状动脉疾病和未来心血管事件的进展而升高。这一特点的确切机制和意义尚不明确。为了解其完整的作用模式,骨保护素基因多态性、钙化、炎症、凋亡及其配体之间的相互关系应纳入研究,文章将近年来骨保护素与动脉粥样硬化关系的研究进展作一综述。

关键词：骨保护素动脉粥样硬化血管钙化急性冠状动脉综合征