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Experimental test of Tsirelson's bound with a single photonic qubit

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Science China(Information Sciences) 2020年第8期63卷 144-146页

作者： Zhiyu TIAN yuan-yuan zhao Hao WU zhao WANG Le LUO School of Physics and Astronomy Sun Yat-sen University

Dear editor,For many protocols, quantum strategies have advantages compared with their classical counterpartners, and these advantages have attracted many interests and applications. One of the famous examples is the Clauser-Horne-ShimonyHolt (CHSH) game [1], which recasts Bell’s theorem [2] into the framework of a game. In the CHSH game, two space-like separated players, Alice and Bob are each assigned a classical bit a and

关键词： CHSH game quantum strategies quantum mechanics Tsirelson's bound single-photon system

Approximation to the Distribution of the Least Squares Estimators in Two Dimensional Cosine Models by Randomly Weighted Bootstrap

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Acta Mathematicae Applicatae Sinica 2013年第4期29卷 765-776页

作者： yuan-yuan zhao Rui-xing MING Yao-hua WU Department of Statistics and Finance University of Science and Technology of China School of Mathematical Sciences Nanjing Normal University Institute of Finance and Statistics Nanjing Normal University School of Statistics and Mathematics Zhejiang Gongshang University

Recently, Kundu and Gupta （Metrika, 48：83 C 97, 1998） established the asymptotic normality of the least squares estimators in the two dimensional cosine model. In this paper, we give the approximation to the general least squares estimators by using random weights which is called the Bayesian bootstrap or the random weighting method by Rubin （Annals of Statistics, 9：130 C 134, 1981） and Zheng （Acta Math. Appl. Sinica （in Chinese）, 10（2）： 247 C 253, 1987）. A simulation study shows that this approximation works very well.

关键词： two dimensional model least squares estimator Bayesian bootstrap random weighting method

Leaf litter decomposition characteristics and controlling factors across two contrasting forest types

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Journal of Plant Ecology 2022年第6期15卷 1285-1301页

作者： yuan-yuan zhao Zhuo-Ting Li Ting Xu An-ru Lou State Key Laboratory of Earth Surface Processes and Resource Ecology College of Life Sciences of Beijing Normal UniversityBeijing 100875China

Plant leaf litter decomposition provides a source of energy and nutrients in forest *** addition to traditional environmental factors,the degradation process of litter is also affected by plant functional traits and litter ***,at the community level,it is still unclear whether the relative importance of plant traits and litter quality on the litter decomposition rate is consistent.A year-long mixed leaf litter decomposition experiment in a similar environment was implemented by using the litterbag method in seven typical forest types in Dongling Mountain,Beijing,North China,including six monodominant communities dominated by Juglans mandshurica,Populus cathayana,Betula dahurica,Betula platyphylla,Pinus tabuliformis and Larix gmelinii ***-rupprechtii and one codominant community dominated by Fraxinus rhynchophylla,Quercus mongolica and Tilia *** results showed that there were considerable differences in the litter decomposition rate(k-rate)among the different forest *** community weighted mean(CWM)traits of green leaves and litter quality explained 35.60%and 9.05%of the k-rate variations,respectively,and the interpretation rate of their interaction was 23.37%,indicating that the CWM traits and their interaction with litter quality are the main factors affecting the k-rate *** the recommended daily allowance,leaf nitrogen content,leaf dry matter content,leaf tannin content and specific leaf area were the main factors affecting the k-rate ***,we suggest that future studies should focus on the effects of the CWM traits of green leaves on litter decomposition at the community level.

关键词： Dongling Mountain of Beijing warm temperate forest ecosystem controlling factors of leaf litter decomposition community-weighted mean traits plant functional traits litter quality

Enhanced-hydrogen gas production through underground gasification of lignite

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Mining Science and Technology 2009年第3期19卷 389-394页

作者： LIU Shu-qin WANG yuan-yuan zhao Ke YANG Ning School of Chemistry and Environmental Engineering China University of Mining ＆ Technology Beijing 100083 China

Underground coal gasification is one of the clean technologies of in-situ coal *** production from underground gasification of lignite was investigated in this study based on simulation *** of lignite, gasification activity, oxygen-steam gasification and the effect of groundwater influx were *** well, the advantages of lignite for stable underground gasification were *** results indicate that lignite has a high activity for *** pyrolysis is an important source of hydrogen *** special heating conditions, hydrogen is released from coal seams at temperatures above 350 °C and reaches its maximum value between 725 and 825 °*** with a hydrogen concentration of 40% to 50% can be continuously obtained by oxygen-steam injection at an optimum ratio of steam to oxygen, while lignite properties will ensure stable *** influx can be utilized for hydrogen preparation under certain geological conditions through pressure ***, enhanced-hydrogen gas production through underground gasification of lignite has experimentally been proved.

关键词： underground coal gasification hydrogen lignite

Phase jump in resonance harmonic emission driven by strong laser fields

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Chinese Physics B 2020年第2期29卷 243-248页

作者： yuan-yuan zhao Di zhao Chen-Wei Jiang Ai-Ping Fang Shao-Yan Gao Fu-Li Li School of Science Xi'an Jiaotong UniversityXi'an 710049China

We present a theoretical investigation of the multiphoton resonance dynamics in the high-order-harmonic generation(HHG)process driven by a strong driving continuous wave(CW)field along with a weak control harmonic *** Floquet theorem is employed to provide a nonperturbative and exact treatment of the interaction between a quantum system and the combined laser *** multiphoton-transition paths for the harmonic emission are coherently *** phase information about paths can be extracted via the Fourier transform analysis of the harmonic signals which oscillate as a function of the relative phase between driving and control *** jumps are observed when sweeping across the resonance by varying the frequency or intensity of the driving *** phase variation as a function of driving frequency at a fixed intensity and as a function of the intensity at a fixed driving frequency allows us to determine the intensity dependence of the transition energy of quantum systems.

关键词： phase jump high-order harmonic generation Stark-shifted transition energy

Dynamic plugging regulating strategy of pipeline robot based on reinforcement learning

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Petroleum Science 2024年第1期21卷 597-608页

作者： Xing-yuan Miao Hong zhao College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.

关键词： Pipeline isolation plugging robot Plugging-induced vibration Dynamic regulating strategy Extreme learning machine Improved sparrow search algorithm Modified Q-learning algorithm

Expression of RRM1 and its association with resistancy to gemcitabine-based chemotherapy in advanced nasopharyngeal carcinoma

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Chinese Journal of Cancer 2012年第10期31卷 476-483页

作者： Li-Ping zhao Cong Xue Jian-Wei Zhang Zhi-Huang Hu yuan-yuan zhao Jing Zhang Yan Huang Hong-Yun zhao Li Zhang State Key Laboratory of Oncology in South China GuangzhouGuangdong 510060P.R.China Department of Medical Oncology Sun Yat-sen University Cancer CenterGuangzhouGuangdong 510060P.R.China.

Gemcitabine has high activity against nasopharyngeal carcinoma(NPC).The level of ribonucleotide reductase subunit M1(RRM1) expression is closely related to the efficacy of gemcitabine on non-small cell lung cancer and pancreatic ***,the expression of RRM1 and its association with sensitivity to gemcitabine-based chemotherapy in advanced NPC is not *** this study,we retrospectively collected 48 formalin-fixed,paraffin-embedded NPC tissues to evaluate the expression of RRM1 using *** patients were diagnosed and treated with gemcitabine-based chemotherapy at Sun Yat-sen University Cancer ***1 expression was positive in 17(35%) ***1 expression was not associated with sex,age,performance status,WHO histological type,number of distant metastases,previous treatment,or cycles of gemcitabine-based chemotherapy(P> 0.05).The progression-free survival of the RRM1-positive group was shorter than that of the RRM1-negative group(5 months vs.7 months,P = 0.036),and the response rate of the RRM1-positive group was somewhat lower than that of the RRM1-negative group(51.6% vs.35.3%,P = 0.278).There was no significant difference in median survival between the RRM1-positive and RRM1-negative groups(22 months vs.19 months,P = 0.540).Our results show that RRM1-negative expression is related with longer progression-free survival in advanced NPC patients treated with gemcitabine-based regimens.

关键词：鼻咽癌化疗基础晚期抵抗性核糖核苷酸还原酶激光雷达非小细胞肺癌

Plasmon-enhanced nanosoldering of silver nanoparticles for high-conductive nanowires electrodes

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Opto-Electronic Advances 2021年第12期4卷 25-33页

作者： yuan-yuan zhao Xue-Liang Ren Mei-Ling Zheng Feng Jin Jie Liu Xian-Zi Dong Zhen-Sheng zhao Xuan-Ming Duan ’1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 511443China Laboratory of Organic NanoPhotonics and CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technologies University of Chinese Academy of SciencesYanqihu CampusBeijing 101407China.

The silver nanowires(Ag NWs)electrodes,which consist of incompact Ag nanoparticles(NPs)formed by multi-photon photoreduction,usually have poor *** effective strategy for enhancing conductivity of the Ag NWs elec-trodes is plasmon-enhanced nanosoldering(PLNS)by laser ***,plasmon-enhanced photothermal effect is used to locally solder Ag NPs and then aggregates of these NPs grow into large irregular particles in PLNS ***-nite element method(FEM)simulations indicate that the soldering process is triggered by localized surface plasmon-in-duced electric field enhancement at“hot-spots”.The effectiveness of PLNS for enhancing conductivity depends on laser power density and irradiation *** optimizing the conditions of PLNS,the electrical conductivity of Ag NWs is signific-antly enhanced and the conductivityσs is increased to 2.45×107 S/m,which is about 39%of the bulk *** PLNS of Ag NWs provides an efficient and cost-effective technique to rapidly produce large-area metal nanowire electrodes and capacitors with high conductivity,excellent uniformity,and good flexibility.

关键词： silver nanowires silver nanoparticles direct laser writing laser nanosoldering photothermal effect conductivity

Targeting Erbin in B cells for therapy of lung metastasis of colorectal cancer

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Signal Transduction and Targeted Therapy 2021年第4期6卷 1302-1319页

作者： Tong Shen Jing-Lin Liu Chu-Yi Wang Youlutuziayi Rixiati Shi Li Ling-Dong Cai yuan-yuan zhao Jian-Ming Li Department of Pathology Soochow University Medical SchoolSuzhouChina Department of Pathology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouChina

The mechanisms and key factors involved in tumor environments for lung metastasis of CRC are still ***,using clinical samples from lung metastases of CRC patients,we found that intestinal immune network for IgA production was significantly dysregulated in lung metastases of ***-cell RNA sequencing discovered a subtype of B cells positive for Erbin,one member of the leucine-rich repeat and PDZ domain(LAP)family,was involved in the lung *** deletion in B cells suppressed lung metastasis of CRC in ***,deletion of Erbin in B cells enhanced the killing effects of CD8+T cells on tumor ***,Erbin knockout attenuated TGFp-mediated suppression of migration of CXCR5+lgA+cells and STAT6-mediated PD1 *** study uncovered a key role of Erbin in regulating PD1+lgA+B cells in lung metastasis of *** Erbin as well as combined use of neutralizing B cells and antibodies neutralizing PD1 suppresses lung metastasis of CRC in mice,suggesting the potential option for treatment of lung metastasis of CRC.

关键词： PD1 metastasis lung