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Demonstration of fully-connected quantum communication network exploiting entangled sideband modes

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Frontiers of physics 2023年第4期18卷 277-282页

作者： Fan Li Xiaoli Zhang Jianbo Li Jiawei Wang Shaoping Shi long tian Yajun Wang Lirong Chen Yaohui Zheng State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Quantum communication network scales point-to-point quantum communication protocols to more than two detached parties,which would permit a wide variety of quantum communication ***,we demonstrate a fully-connected quantum communication network,exploiting three pairs of Einstein–Podolsky–Rosen(EPR)entangled sideband modes,with high degree entanglement of 8.0 dB,7.6 dB,and 7.2 *** sideband modes from a squeezed field are spatially separated by demultiplexing operation,then recombining into new group according to network *** group of sideband modes are distributed to one of the parties via a single physical path,making sure each pair of parties build their own private communication links with high channel capacity better than any classical scheme.

关键词： quantum network quantum communication entangled sideband modes quantum dense coding

A new anchor-siphon drainage combined method used for slope stabilization

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Journal of Mountain Science 2023年第11期20卷 3295-3311页

作者： SUN Hong-yue WANG Xu YU Yang SHU Jun-wei WANG tian-long LUO Rui CHU Zhao-wei Ocean College Zhejiang UniversityZhejiang ProvinceZhoushan 316021China College of Civil Engineering and Architecture Zhejiang UniversityHangzhou 310058China

A new anchor-siphon drainage combined method used for slope stabilization is proposed in this *** includes an anchoring section and a siphon drainage *** novelty of the anchor-siphon drainage combined method is the realization of the drainage and anchoring in the one inclined *** engineering cost of drilling and the resulting disturbance to the slope is *** validate the feasibility of the proposed method,a numerical method that combines the pore water pressure distribution after siphon drainage and the anchoring force of the anchoring section is used to evaluate the safety of the slope with the anchor-siphon drainage *** proposed method was illustrated and validated with the Hongpu Village landslide,in Tonglu County,Zhejiang Province,in *** with the common anchor bar with the same length in the anchoring section,the factor of safety(FOS)for Hongpu Village slope with anchorsiphon drainage is increased by *** calculation method of the optimal length ratio between the drainage section and the anchoring section and its influencing factors were *** the different design parameters,there is always an optimal length ratio of the drainage *** with the siphon drainage and full-length anchor bar with the same borehole length,the anchor-siphon drainage combined method shows better landslide prevention ***,when the optimized parameters with a bond strength of 560kPa,a borehole inclination of 35°,and no reduction in length are used,the calculated safety factor is 1.316,which is significantly higher than the FOS of 1.131 for the slope with siphon drainage.

关键词： Landslide Safety factor Optimized design Siphon drainage Anchor New structure

NMR Study of Superconductivity and Spin Fluctuations in Hole-Doped Superconductor Ca_(1-x)Na_(x)Fe_(2)As_(2) (Tc=32 K)

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Chinese Physics Letters 2012年第6期29卷 257-260页

作者： MA long ZHANG Jin-Shan WANG Du-Ming HE Jun-Bao XIA tian-long CHEN Gen-Fu YU Wei-Qiang Department of Physics Renmin University of ChinaBeijing 100872 School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206

We report both 23Na and 75As nuclear magnetic resonance (NMR ) studies on hole-doped Ca_(1-x)Na_(x)Fe_(2)As_(2) superconducting single crystals (x ≈ 0.67) with the superconducting temperature Tt =32 *** superconductivity is suggested by a sharp drop of the Knight shift 75K below *** spin-lattice relaxation rate 1/T1 does not show the Slichter-Hebel coherence peak,which suggests an unconventional *** penetration depth is estimated to be 0.24 μm at temperature T =*** 1/75T1T shows an anisotropic behavior and a prominent low-temperature upturn,with 75T1 denoting the 75As spin-lattice relaxation time and T the temperature,which indicates strong low-energy antiferromagnetic spin fluctuations and supports a magnetic origin of superconductivity.

关键词： relaxation superconductivity

Rapidly counting atomic planes of ultra-thin MoSe2 nanosheets(1≤n≤4)on SiO2/Si substrate

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Rare Metals 2016年第8期35卷 632-636页

作者： Yi-Ping Wang Hui-Jun Zhou Gui-Hua Zhao tian-long Xia Lei Wang Le Wang Li-Yuan Zhang Department of Physics Renmin University of ChinaBeijing 100872China Beijing Key Laboratory of Opto-electronic Functional Materialsand Micro-nano Devices Renmin University of China Department of Power and Electrical Engineering Northwest A&F UniversityYangling 712100ShaanxiChina

The optical, thermal and electrical properties of ultra-thin two-dimensional （2D） crystal materials are highly related to their thickness. Therefore, identifying the atomic planes of few-layer crystal materials rapidly is crucial to fundamental study. Here, a simple technique was demonstrated based on optical contrast for counting atomic planes （n） of few-layer MoSe2 on SiO2/Si substrates. It is found that the optical contrast of single-layer MoSe2 depends on light wavelength and thickness of SiO2 on Si substrate. The data calculated based on a Fresnel law-based model as well as atomic force microscopy （AFM） mea- surements fit well with the values measured by spectro- scopic ellipsometer. Furthermore, the calculated and measured contrasts were integral and plotted, which can be used to determine the MoSe2 atomic planes （1 ≤ n ≤ 4） accurately and rapidly.

关键词： Thickness identification Optical contrast MoSe2 Optical microscopy

Anodal transcranial direct current stimulation alleviates cognitive impairment in an APP/PS1 model of Alzheimer’s disease in the preclinical stage

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Neural Regeneration Research 2022年第10期17卷 2278-2285页

作者： Yin-Pei Luo Zhi Liu Cong Wang Xiu-Fang Yang Xiao-Ying Wu Xue-long tian Hui-Zhong Wen Chongqing Key Laboratory of Neurobiology Department of NeurobiologySchool of Basic MedicineArmy Medical UniversityChongqingChina Chongqing Medical Electronics Engineering Technology Research Center Laboratory of Neural Regulation and Rehabilitation TechnologyCollege of BioengineeringChongqing UniversityChongqingChina Department of Histology and Embryology School of Basic MedicineArmy Medical UniversityChongqingChina

Anodal transcranial direct current stimulation(AtDCS)has been shown to alleviate cognitive impairment in an APP/PS1 model of Alzheimer’s disease in the preclinical ***,this enhancement was only observed immediately after AtDCS,and the long-term effect of AtDCS remains *** this study,we treated 26-week-old mouse models of Alzheimer’s disease in the preclinical stage with 10 AtDCS sessions or sham *** Morris water maze,novel object recognition task,and novel object location test were implemented to evaluate spatial learning memory and recognition memory of *** blotting was used to detect the relevant protein *** changes were observed using immunohistochemistry and immunofluorescence *** weeks after treatment,the mice subjected to AtDCS sessions had a shorter escape latency,a shorter path length,more platform area crossings,and spent more time in the target quadrant than sham-stimulated *** mice subjected to AtDCS sessions also performed better in the novel object recognition and novel object location tests than sham-stimulated ***,AtDCS reduced the levels of amyloid-β42 and glial fibrillary acidic protein,a marker of astrocyte activation,and increased the level of neuronal marker NeuN in hippocampal *** findings suggest that AtDCS can improve the spatial learning and memory abilities and pathological state of an APP/PS1 mouse model of Alzheimer’s disease in the preclinical stage,with improvements that last for at least 6 weeks.

关键词： Alzheimer’s disease amyloid-β anodal transcranial direct current stimulation cognitive function inflammation long-term effect neuron preclinical stage

Suppression of gastric cancer growth by baculovirus vector-mediated transfer of normal epithelial cell specific-1 gene

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World Journal of Gastroenterology 2008年第38期14卷 5810-5815页

作者： Wei Huang Xiang-long tian Yun-Lin Wu Jie Zhong Li-Fen Yu Sheng-Ping Hu Biao Li Department of Nuclear Medicine Ruijin Hospital Shanghai Jiaotong University School of Medicine Shanghai 200025 China Department of Gastroenterology Ruijin Hospital Shanghai Jiaotong University School of Medicine Shanghai 200025 China

AIM: To study the inhibitory effect of baculovirus- mediated normal epithelial cell specific-1 (NES1) gene therapy on gastric cancer (GC) in vitro and in vivo. METHODS: We first constructed recombinant baculovirus vectors and then transfected them into gastric cancer cells (SGC-7901). Efficiency of the baculovirus for gene transfer into SGC-7901 cells and cell growth curves were detected by fluorescence microscopy, Western blot and 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in vitro, respectively. The therapeutic effect of this gene therapy on GC was confirmed in xenografted nude mice. Tumor growth was determined by tumor volume, and expression of NES1 in tumor was analyzed by immunohistochemistry. RESULTS: Baculovirus vectors were successfully transfected into SGC-7901 cells. SGC-7901 cells transfected with the NES1 gene inhibited cell growth. In the Bac-NES1 treated group, tumor growth was significantly reduced with a high level of NES1 expression CONCLUSION: Baculovirus-mediated NES1 gene can be used in gene therapy for GC.

关键词： Gastric cancer Normal epithelial cellspecific-1 gene Baculovirus Gene therapy

Predictive Control for Visual Servo Stabilization of Nonholonomic Mobile Robots

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自动化学报 2013年第8期39卷 1238-1245页

作者： CAO Zheng-Cai YIN long-Jie FU Yi-Li LIU tian-long College of Information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Embedded System and Service Computing Ministry of EducationTongji UniversityShanghai 201804China State Key Laboratory of Robotics and Systems Harbin Institute of TechnologyHarbin 150080China

活动机器人获得了的 nonholonomic 的视觉伺服稳定广泛的注意。当前，这个问题的解决方案不管多么不认为可见性限制和致动器是限制，因此设计控制器是困难的在实际申请认识到令人满意的性能。在这份报纸，为一个活动机器人的视觉伺服稳... 详细信息

活动机器人获得了的 nonholonomic 的视觉伺服稳定广泛的注意。当前，这个问题的解决方案不管多么不认为可见性限制和致动器是限制，因此设计控制器是困难的在实际申请认识到令人满意的性能。在这份报纸，为一个活动机器人的视觉伺服稳定的一个预兆的控制器被介绍。第一，利用产生速度的命令的一个运动学的预兆的稳定控制器被介绍。然后，来临以便 asymptotically 做活动机器人的实际速度到需要的，一个动态预兆的控制器被设计。建议预兆的控制器能容易处理限制。最后，几模拟被执行，并且结果说明建议控制计划是有效的解决视觉伺服稳定问题。

关键词：非完整移动机器人稳定化控制器预测控制器视觉伺服生成速度运动预测稳定问题控制方案

Study on the Influencing Factors of Cervical Lymph Node Metastasis in Papillary Thyroid Microcarcinoma

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Chinese Journal of Biomedical Engineering(English Edition) 2019年第1期28卷 22-29页

作者： JI tian-long Department of Radiotherapy the First Affiliated Hospital of China Medical UniversityShenyang 100001China

Objective:To investigate the influencing factors of the cervical lymph node metastasis in papillary thyroid microcarcinoma(PTMC)and to provide a theoretical basis for cervical lymph node ***:A total of 80 PTMC patients treated in the Department of Breast and Thyroid Surgery of our Hospital from January 2017 to January 2018 were selected in the *** the patients accepted the first surgical treatment and were confirmed by *** clinical data of all PTMC patients were retrospectively analyzed,and the related factors such as gender,age,number of primary lesions,tumor diameter and extrathyroidal invasions were *** factors that actually affected the lymph node metastasis of PTMC patients were ***:All patients underwent prophylactic central lymph node *** node metastasis occurred in 26 patients in the central region and in 13 patients in the lateral neck *** rate of lymph node metastasis in the central region of men was 41.18%,and the rate of lymph node metastasis in the lateral neck region was 23.53%,which were significantly higher than that of women's 30.16%and 14.29%.The differences were statistically significant(P45 years old(12.50%,9.38%)and the differences were statistically significant(P<0.05).The lymph node metastasis rate in the central region and in the lateral neck region of tumor diameter<0.5 cm were 27.27%and 9.09%respectively,which were significantly lower than those of the tumor diameter 0.5-1.0 cm(38.89%,25.00%)(P<0.05).The rate of lymph node metastasis in the central region of single focus was 20.37%,which was significantly lower than that of 57.69%in the multifocal lesions;the rate of lymph node metastasis in the cervical region of the single lesion was 11.11%,which was significantly lower than 26.92%in t

关键词： thyroid micropapillary carcinoma cervical lymph node metastasis influencing factors

Fundamentals and photocatalytic hydrogen evolution applications of quaternary chalcogenide semiconductor:Cu_(2)ZnSnS_(4)

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Rare Metals 2022年第7期41卷 2153-2168页

作者： Xin-long Zheng Ying-Jie Yang Yu-Hao Liu Pei-Lin Deng Jing Li Wei-Feng Liu Peng Rao Chun-Man Jia Wei Huang Yan-Lian Du Yi-Jun Shen Xin-long tian State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Laboratory of Fine ChemistrySchool of ScienceHainan UniversityHaikou 570228China Mechanical and Electrical Engineering College Hainan UniversityHaikou 570228China

Inexpensive,safe,and efficient conversion of solar energy to hydrogen from water splitting requires the development of effective and durable ***_(2)ZnSnS_(4)(CZTS),the emerging quaternary chalcogenide material for solar energy conversion,possesses many advantages,such as narrow direct band gap(1.5 eV),nontoxic,earth-abundance,and low melting ***,CZTS-based photocatalysts have been extensively investigated for their application as an active photocatalyst in hydrogen evolution from water splitting,while the performance is still highly needed to be improved for the practical *** this review,first,the crystal and band structure properties of CZTS are briefly introduced,and afterward,the basic principle of photocatalytic hydrogen evolution from water splitting is ***,the performance and status of bare CZTS,the combination of CZTS and co-catalysts,and CZTSbased heterojunction photocatalysts for hydrogen evolution are reviewed and discussed in ***,the issues and challenges currently encountered in the application of CZTS and their possible solutions for developing advanced CZTS photocatalysts are provided.

关键词： Cu_(2)ZnSnS_(4) Quaternary chalcogenide Photocatalyst Hydrogen evolution