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Heterogeneous Vehicular Communication Architecture and Key Technologies

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ZTE Communications 2010年第4期8卷 39-44页

作者： Liu Fuqiang shan Lianhai School of Electronics and Information Engineering Tongji University Shanghai 200092 P. R. China shanghai Research Center for Wireless Communications Shanghai 200335 P. R. China

Vehicular networks have traditionally been used in specific scenarios, such as Electronic Toll Collection （ETC）. New vehicular networks, however, support communication of safety information between vehicles using self-organized ad-hoc technology. Because of limitations in network architecture, current vehicular networks only provide communication for mobile terminals in a vehicle cluster. Vehicles cannot exchange information with an Intelligent Traffic System （ITS） control center nor can they access broadband wireless networks. This paper proposes a novel heterogeneous vehicular wireless architecture based on Wireless Access in Vehicular Environment （WAVE, IEEE 802.1 lp） and Worldwide Interoperability for Microwave Access （WiMAX, IEEE 802.16e）. A new network infrastructure and system model is introduced, and key technologies are discussed. For WAVE, these technologies include adaptive multichannel coordination mechanism and scheduling algorithm; and for WiMAX, these technologies include group handover scheme and two-level resource allocation algorithm.

关键词： vehicular networks multi-channel scheduling group handover resourceallocation

Ectopic Tcf1 expression instills a stem-like program in exhausted CD8^(+) T cells to enhance viral and tumor immunity

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Cellular & Molecular Immunology 2021年第5期18卷 1262-1277页

作者： Qiang shan Sheng’en Hu Xia Chen Derek B.Danahy Vladimir P.Badovinac Chongzhi Zang Hai-Hui Xue Center for Discovery and Innovation Hackensack Meridian HealthNutleyNJ07110USA Department of Microbiology and Immunology Carver College of MedicineUniversity of IowaIowa CityIA52242USA Center for Public Health Genomics University of Virginia School of MedicineCharlottesvilleVA22908USA Department of Pathology Carver College of MedicineUniversity of IowaIowa CityIA52242USA Interdisciplinary Immunology Graduate Program Carver College of MedicineUniversity of IowaIowa CityIA52242USA Iowa City Veterans Affairs Health Care System Iowa CityIA52246USA

Exhausted CD8^(+)T(Tex)cells are dysfunctional due to persistent antigen exposure in chronic viral infection and tumor contexts.A stem cell-like Tex(Tex-stem)subset can self-renew and differentiate into terminally exhausted(Tex-term)***,we show that ectopic Tcf1 expression potently promoted the generation of Tex-stem cells in both a chronic viral infection and preclinical tumor ***1 overexpression diminished coinhibitory receptor expression and enhanced polycytokine-producing capacity while retaining a heightened responses to checkpoint blockade,leading to enhanced viral and tumor ***,ectopically expressed Tcf1 exploited existing and novel chromatin accessible sites as transcriptional enhancers or repressors and modulated the transcriptome by enforcing pre-existing expression patterns in Tex-stem cells,such as enhanced suppression of Blimp1 and Bim and acquisition of new downstream genes,including Mx1,Tox2,and *** findings reveal a pronounced impact of ectopic Tcf1 expression on Tex functional restoration and highlight the therapeutic potential of harnessing Tcf1-enforced transcriptional programs.

关键词： T cell exhaustion Tcf1 Stem cell features

Effect of Acupoints on Acupuncture-Moxibustion and its Therapeutic Mechanism

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World Journal of Traditional Chinese Medicine 2020年第3期6卷 239-248页

作者： Han-Dan Zheng Zhao-Qin Wang shan-shan Li Yuan Lu Yan Huang Ci-Li Zhou Yu-Qing Lu Hui-Rong Liu Ya-Nan Liu Huan-Gan Wu Key Laboratory of Acupuncture and Immunological Effects Shanghai Research Institute of Acupuncture and MeridianShanghai University of Traditional Chinese Medicine Yueyang Clinical Medical College Shanghai University of Traditional Chinese Medicine Department of Acupuncture and Moxibustion Shanghai Municipal Hospital of Traditional Chinese MedicineShanghai University of Traditional Chinese MedicineShanghaiChina

The clinical efficacy of acupuncture-moxibustion(AM)mainly depends on acupoints,but the relationship between the acupoints and AM remains *** clinical efficacy and clarifying the mechanisms of AM is *** found that the specificity and sensitivity of acupoints,the skill of operation,and reasonable amount of stimulation can significantly improve the efficacy of *** addition,some studies have shown that Neural-Endocrine-Immune network and metabolites are involved in this process,clarifying the therapeutic mechanism of ***,how to effectively use acupoints to improve the clinical efficacy of AM is one of the key issues in need of an urgent *** summary,this article reviewed the Chinese and English databases on the clinical efficacy and underlying mechanisms of acupoints to clarify the relationship between acupoints and AM efficacy and ultimately improve clinical efficacy through effective and rational use of acupoints.

关键词： Acupoints clinical efficacy acupuncture-moxibustion specificities neural-endocrine-immune network

Discovering ToeticaF Aesthetics in Life

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Women of China 2021年第5期 34-36页

作者： YE shan 不详

Poetic Books,a poetry-themed bookstore,is located in a quadrangle near the eastern end of Hou Yuan'ensi Alley,in the area of Nanluoguxiang,a famous tourist spot in Beijing's Dongcheng *** independent bookstore,which specializes in retailing poetic books,functions as a"cultural club,"where contemporary Chinese poets and writers can gather with friends and readers,and where they can have close communications during poetry discussions and exchanges.

关键词：闹中取静当代诗人偏安一隅四合院

Arginine Vasopressin-Aquaporin-2 Pathway-Mediated Dehydration Effects of Electroacupuncture in Guinea Pig Model of AVP-Induced Endolymphatic Hydrops

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Chinese Journal of Integrative Medicine 2019年第10期25卷 763-769页

作者： JIANG Li-yuan HE Jiao-jun CHEN Xi-xi SUN Xue-jiao WANG Xue-zhong ZHONG shan CHEN Hua-de Departm ent of Acupuncture and Moxibustion the Third Clinical Medical College of Zhejiang Chinese Medical University Hangzhou (310053) China Department of Acupuncture and Rehabilitation Guangxing Hospital Affiliated to Zhejiang Chinese Medical University Hangzhou (310007) China

Objective: To investigate the effects of electroacupuncture(EA) on endolymphatic hydrops(EH) and the regulation of arginine vasopressin(AVP)-aquaporin-2(AQP2) pathway in guinea pigs. Methods: EH was induced in male guinea pigs by an intraperitoneal injection of AVP. For the treatment, EA was delivered to Baihui(GV 20) and Tinggong(SI 19) acupoints, once per day for 10 consecutive days. In histomorphological studies, cochlear hydrops degree was evaluated by hematoxylin-eosin(HE) staining, and then the ratio of scala media(SM) area to SM + scala vestibuli(SV) area(R value) was calculated. In mechanical studies, a comparison of plasma AVP(p-AVP) concentrations, cyclic adenosine monophosphate(cAMP) levels, vasopressin type 2 receptor(V2R) and AQP2 mRNA expressions in the cochlea were compared among groups. Results: EA significantly reduced cochlear hydrops in guinea pigs(P=0.001). EA significantly attenuated the AVPinduced up-regulation of p-AVP concentrations(P=0.006), cochlear c AMP levels(P=0.003) and AQP2 mRNA expression(P=0.016), and up-regulated the expression of V2R mRNA(P=0.004) in the cochlea. Conclusion: The dehydrating effect of EA might be associated with its inhibition of AVP-AQP2 pathway activation.

关键词： endolymphatic hydrops electroacupuncture arginine vasopressin (AVP)-aquaporin-2 (AQP2) pathway Meniere's disease

Synthesis and Crystal Structure of a Novel Diorganotin(Ⅳ) Complex Containing 3,4-Difluorobenzohydroxamato Ligand

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Chinese Chemical Letters 2006年第6期17卷 821-824页

作者： Xian Mei shanG Ji Zhou WU Qing shan LI Tongji Pharmaceutical College Huazhong University of Science and Technology Wuhan 430030 School of Pharmaceutical Science Shanxi Medical University Taiyuan 030001

A new five-coordinate mixed-ligand compound, di-n-butyl（3,4-difluorobenzoxy）（3,4-difluorobenzohydroxamato）tin（Ⅳ） 1 was synthesized and characterized by IR, ^1H, ^13C, ^119Sn NMR spectra and single crystal X-ray... 详细信息

关键词： Diorganotin(Ⅳ) crystal structure 3,4-difluorobenzohydroxamic acid.

Quantitative Analysis of the Reduction Kinetics of a Pt(Ⅱ) Precursor in the Context of Pt Nanocrystal Synthesis

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Chinese Journal of Chemical Physics 2018年第4期31卷 370-374,613页

作者： shan Zhou Tung-HanYang MingZhao YounanXia School of Chemistry and Biochemistry Georgia Institute of TechnologyAtlantaGeorgia 30332USA The Wallace H.Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory UniversityAtlantaGeorgia 30332USA

In this letter, we report a quantitative analysis of how a Pt（II） precursor is reduced to atoms at different temperatures for the formation of Pt nanocrystals with different morphologies and sizes. Our results suggest that in the early stage of a synthesis, the Pt（II） precursor is reduced to atoms exclusively in the solution phase, followed by homogeneous nucleation to generate nuclei and then seeds. At a relatively low reaction temperature such as 22℃, the growth of the seeds is dominated by autocatalytic surface reduction that involves the adsorption and then reduction of the Pt（II） precursor on the surface of the just-formed seeds. This particular growth pathway results in relatively large assemblies of Pt nanocrystals. When the reaction temperature is increased to 100 ℃, the dominant reduction pathway will be switched from surface to solution phase, producing much smaller asselnblies of Pt nanocrystals. Our results also demonstrate that a similar trend applies to the seed-rnediated growth of Pt nanocrystals in the presence of Pd nanocubes.

关键词： Kinetic model Nanocrystal synthesis Precursor reduction

Macromineral requirements of Dorper×thin-tailed Han crossbred female lambs

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Journal of Integrative Agriculture 2015年第8期14卷 1617-1626页

作者： JI Shou-kun XU Gui-shan DIAO Qi-yu DENG Kai-dong JIANG Cheng-gang TU Yan ZHANG Nai-feng Feed Research Institute Chinese Academy of Agricultural Sciences College of Animal Science Tarim University College of Animal Science Jinling Institute of Technology

A comparative slaughter trial was conducted to determine the net mineral requirements for maintenance and growth of Dorper crossbred female lambs raised from 20 to 35 kg of body weight（BW）.Thirty-five Dorper×thin-tailed Han crossbred female lambs of（20.3±1.14） kg BW were used： 7 lambs were randomly chosen and slaughtered at the beginning of the experiment as the baseline group for measuring the initial body composition; another 7 lambs were randomly chosen and offered a pelleted mixed diet ad libitum and slaughtered at（27.0±0.73） kg BW; the remaining 21 lambs were randomly divided into 3 groups of 7 animals each and subjected to the same diet either ad l ibitum or at 70 or 40% of ad libitum *** 21 lambs were fed in 7 slaughter groups, with each group consisting of one lamb from each treatment（ad libitum, 70 or 40% of ad libitum intake）.The 3 groups were slaughtered when the sheep fed ad libitum attained（33.8±0.52） kg of *** body composition of five minerals（Ca, P, Na, K, and Mg） was *** net mineral requirements for maintenance were 35.01, 25.18, 9.30, 31.35, and 2.03 mg kg–1 empty BW（EBW） for Ca, P, Na, K, and Mg, respectively, and the net growth requirement per kg of EBW gain ranged from 9.73 to 8.87 g of Ca, 5.83 to 5.27 g of P, 1.73 to 1.63 g of Na, 3.73 to 4.08 g of K, and 0.26 to 0.25 g of Mg for Dorper crossbred lambs in China, *** estimates of mineral requirements with Dorper crossbred lambs in the current study were not consistent with the recommendations from previous studies.

关键词： macrominerals comparative slaughter trials maintenance requirements growth requirements sheep

MAKING FULL USE OF OUTDATED CHANNEL ESTIMATES FOR BLOCK BY BLOCK ADAPTIVE MODULATIONS

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Journal of Electronics(China) 2007年第1期24卷 54-59页

作者： shan Xiaohong Bi Guangguo National Mobile Commun. Research Lab Southeast Univ. Nanjing 210005 China

This paper explores the potential to use accurate but outdated channel estimates for adaptive modulation. The work is novel in that the research is conditioned on block by block adaptation. First,we define a new quantity,the Tolerable Average Use Delay (TAUD),which can indicate the ability of an adaptation scheme to tolerate the delay of channel estimation results. We find that for the variable-power schemes,TAUD is a constant and dependent on the target Bit Error Rate (BER),average power and Doppler frequency; while for the constant-power schemes,it depends on the ad-aptation block length as well. At last,we investigate the relation between the delay tolerating per-formance and the spectral efficiency and give the system design criterion. The delay tolerating per-formance is improved at the price of lower data rate.

关键词： Adaptive modulation Block by block adaptation Channel estimation Spectral efficiency