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| 1 | Reverse reconciliation for continuous variable quantum key distribution显示文摘An efficient and practical post-processing technique based on reverse reconciliation for continuous variable quantum key distribution is proposed and simulated with low-density parity check (LDPC) codes. MultiLevel Coding/ MultiStage Decoding, which fully utilizes optimization technique such as vector quantization and iterative decoding and the optimal channel coding most close to the Shannon limit, was used to realize efficient reverse reconciliation algorithm. Simulation results showed that the proposed method can improve the secure key distribution rate to 2.2 kb/s and the coding efficiency to 0.89 over 20 km in single-mode optical fiber. Moreover, there still is room for much improvement. | LU ZhiXin 1,2 , YU Li 1,2 , LI Kang 1,2 , LIU BingCan 1,2,3 , LIN JianGui 1,2 , JIAO RongZhen 1,2 & YANG BoJun 1,21 School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China 2 Key Laboratory of Information Photonics and Optical Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China 3 Department of Fundamental Courses, Academy of Armored Force Engineering, Beijing 100072, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 12 |
| 2 | Cloudiness regime shift during 1946—1992 recorded by coral in the South China Sea显示文摘By extracting and comparing long-term trend components of coral gray value, sea surface temperature, cloudiness, and net heat flux for the period of 1946~1992, the relationships among them are addressed. There exists a prominent regime shift in the cloudiness associated with the corresponding variabilities of sea surface temperature and net heat flux occurred in the mid-1960s, which can be successfully recorded by coral gray value, a climatic proxy. Long-term cloudiness variations in the South China Sea are completely opposite to the equatorial western Pacific in the past five decades, whereas they share a similar trend to that over Asian monsoon prevailing waters. The fact that the coral gray value is highly correlated to cloudiness provides a unique perspective on utilizing this coral to study cloudiness variations in the pre-instrumental period. | GAO Rongzhen SUN Donghuai WANG Dongxlao YANG Xiaoyi | 2005 | Acta Oceanologica Sinica2005，24，5： | 5 |
| 3 | An efficient catalytic system for the synthesis of glycerol carbonate by oxidative carbonylation of glycerol显示文摘Glycerol carbonate was synthesized by the oxidative carbonylation of glycerol catalyzed by the commercial Pd/C with the aid of NaI.High conversion of glycerol(82.2%),selectivity to glycerol carbonate(>99%),and TOF(900 h–1)were obtained under the conditions of 5 MPa(pCO:pO2=2:1),140 oC,2 h.The highly active palladium species were generated in situ by dissolution from the carbon support and stabilized by re-deposition onto the support surface after the reaction was finished.Palladium dissolution and re-deposition were crucial and inherent parts of the catalytic cycle,which involved heterogeneous reactions.This Pd/C catalyst could be recycled and efficiently reused for four times with a gradual decrease in activity.Moreover,the influences of various parameters,e.g.,types of catalysts,solvents,additives,reaction temperature,pressure,and time on the conversion of glycerol were investigated.A reaction mechanism was proposed for oxidative carbonylation of glycerol to glycerol carbonate. | WANG LiYan LIU Yan LIU ChunLing YANG RongZhen DONG WenSheng | 2013 | Science China Chemistry2013，56，10： | 4 |
| 4 | The mechanical properties of co-continuous Si 3 N 4 /Al composites manufactured by squeeze casting显示文摘 | Yuan Lu Jianfeng Yang Weizhong Lu Rongzhen Liu Guanjun Qiao Chonggao Bao | 2010 | Materials Science & Engineering A2010，，23： | 2 |
| 5 | Therapeutic Effect and Mechanism of New Maixian Powder on DSS-induced UC Rats显示文摘[Objectives] To study the therapeutic effect and mechanism of New Maixian Powder on ulcerative colitis( UC) rats through observing its regulatory effect on the protein kinase R-like endoplasmic reticulum kinase( PERK)/eukaryotic translation initiation factor-2α( e IF-2α)/nuclear transcription factor-kappa B( NF-κB) signaling pathway. [Methods]First,60 SD rats were randomly divided into normal group,model group,mesalazine group,and New Maixian Powder low,medium and high dose groups,10 rats each group. Then,dextran sulfate sodium( DSS) was used to induce UC rats. The mesalazine group was given 0. 42 g/( kg·d) of mesalazine sustained-release granule suspension,New Maixian Powder low,medium and high dose groups were given 1. 5,3,and 6 g/( kg·d) of New Maixian Powder suspension,respectively,and other groups were given an equal volume of physiological saline,continuous intragastric administration for 14 d. Next,the disease activity index( DAI) of UC rats was evaluated; the expression of NF-κB in serum was measured by enzyme-linked immunosorbent assay( ELISA); the expression of PERK and e IF-2α protein and m RNA in colon tissue was detected by Western blot and real-time quantitative polymerase chain reaction( RT q-PCR). [Results] Compared with the normal group,the DAI score and serum NF-κB level in the model group were significantly higher( P < 0. 05),and PERK and e IF-2α protein and m RNA levels in the colon tissue were increased( P < 0. 05); compared with the model group,the DAI score decreased and serum NF-κB level declined in the New Maixian Powder group,and the expression of PERK and e IF-2α protein and m RNA in New Maixian Powder medium dose and high dose groups declined( P < 0. 05). [Conclusions]New Maixian Powder has good therapeutic effect on UC rats,and its mechanism may be connected with the inhibition of the activation of PERK/e IF-2α/NF-κB signaling pathway. | Minjun FU Rongzhen SHI Jianjun SHEN Meixia YANG Hongbin ZHENG | 2018 | Medicinal Plant2018，9，3： | 1 |
| 6 | Application of Biochemical Fulvic Acid Potassium in Transplantation of Trees显示文摘[Objective]The paper was to clarify the application of biochemical fulvic acid potassium on the survival rate and growth of various trees transplanted in the process of landscaping.[Method]Two experimental treatments(i.e.decomposed organic fertilizer+biochemical fulvic acid potassium water soluble fertilizer,decomposed organic fertilizer+compound fertilizer)were designed to determine the changes in physical and chemical properties before and after soil treatment,and the survival rate,plant height and ground diameter of four different cultivated plants within one year,and the effects of applying biochemical fulvic acid potassium on cultivated plants were investigated.[Result]The soil organic matter,total nitrogen,alkali-hydrolyzable nitrogen,soil available phosphorus,soil available potassium and p H value in the soil treated with decomposed organic fertilizer+biochemical fulvic acid potassium soluble fertilizer,and decomposed organic fertilizer+compound fertilizer increased significantly,and the soil bulk density decreased obviously.The survival rates,plant heights and ground diameters of four different cultivated plants were significantly improved after application of decomposed organic fertilizer+biochemical fulvic acid potassium water soluble fertilizer,and decomposed organic fer-tilizer+compound fertilizer(P<0.05).[Conclusion]The application of biochemical fulvic acid potassium on cultivated plants effectively improved soil fertility,increased the utilization of nitrogen,phosphorus and potassium,improved the growth of plants,and promoted the growth of landscaping plants after transplantation. | Yang Qunhui He Xiang Bi Yunqing Yang Peiwen Zhang Qing Yang Mingying Shi Zhufeng Peng Rongzhen Wang Jiayin | 2020 | Plant Diseases and Pests2020，11，2： | 1 |
| 7 | Chromate separation by selective crystallization显示文摘A new paradigm to remove toxic chromate anions from aqueous solution by crystallization of chromatewater clusters with imine-linked guanidinium cationic ligands is introduced.The guanidium-based cationic ligand was easily prepared through the imine condensation of an alde hyde and aminoguanidine hydrochloride.The cationic imine-linked guanidinium liga nd(BBIG-CI)showed a high re moval capacity(292.5 mg/g)in the solutions.Rapid decontamination of chromate anions from the wastewater by this cationic ligand was resulted from an instantaneous crystallization.The produced guanidium chromate salts have an extremely low solubility(Ksp,BBIG=8.19×10^9).Such superior removal performance of these mate rials was attributed to the cha rge-assisted hydrogen bonding between the cationic ligand and chromate-water hydrate anions,which was revealed by the single-crystal X-ray diffraction analysis and density functional theory(DFT)calculations.In addition,the succes s ful recove ry of the guanidium-based ligand makes it more attractive for real-world applications. | Xijian Chen Xing Dai Rongzhen Xie Jie Li Afshin Khayambashi Lei Xu Chuang Yang Nannan Shen Yaxing Wang Linwei He Yugang Zhang Chengliang Xiao Zhifang Chai Shuao Wanga | 2020 | Chinese Chemical Letters2020，31，7： | 0 |
| 8 | Ordered mesoporous Ba CO_3/C-catalyzed synthesis of glycerol carbonate from glycerol and dimethyl carbonate显示文摘Ordered mesoporous Ba CO3/C composites were synthesized by a multi-component co-assembly method combined with a carbonization process using phenolic resol as carbon source, barium nitrate as barium precursor, and triblock copolymer Pluronic F127 as template. The synthesized materials were characterized by X-ray diffraction, transmission electron microscopy, N2 physical adsorption, thermogravimetric analysis, and temperature-programmed desorption of CO2. When Ba CO3 contents were increased from 9.1 wt% to 44.7 wt%, pore size increased from 3.1 to 4.3 nm and the BET(Brunauer-Emmett-Teller) surface area initially increased to a maximum value of 390 m2 g-1(at a Ba CO3 content of 18.5 wt%) before subsequently decreasing. Ba CO3 was well dispersed in the amorphous carbon framework, and no phase separation was observed. The mesoporous BaCO3/C composites exhibited high catalytic activities toward the transesterification of glycerol and dimethyl carbonate into glycerol carbonate. A glycerol conversion of 97.8% and a glycerol carbonate selectivity of 98.5% were obtained under the optimized reaction conditions. | Yin Wang Chunling Liu Jihong Sun Rongzhen Yang Wensheng Dong | 2015 | Science China Chemistry2015，58，4： | 0 |
| 9 | Transcriptomic analysis of bisphenol AF on early growth and development of zebrafish(Danio rerio)larvae显示文摘Bisphenol AF(BPAF),an alternative to bisphenol A,is widely detected in aquatic environments.Owing to health concerns,the toxic effects of BPAF on organisms are drawing attention.The present study aims to evaluate the toxicity of BPAF,combining the results of omics techniques and experiment.Employing transcriptome sequencing(RNA-seq),we obtained 391,648,512,and 545 differentially expressed genes(DEGs)in 0.1,1,10,and 100 mg/L BPAF-exposed zebrafish larvae,respectively.Gene ontology(GO)analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment revealed the early development,stimulus-response,and MAPK signaling pathway were significantly affected by BPAF.In addition,five hub genes(fgf3,fgf4,map2k1,myca,and casp3b)were highlighted as the key genes in MAPK signaling pathway using the protein-protein interaction network.Therefore,the RNA-seq results showed that early development and stimulus-response were the main processes affected by BPAF,which was consistent with our morphological and pathological results.The hatching rate of zebrafish embryos in 1 and 10 mg/L BPAF groups was significantly inhibited,and the oxidative stress indexes,including the level of total antioxidant capacity(T-AOC),superoxide dismutase(SOD),and lipid peroxidation(LPO),were significantly increased by the 100 mg/L BPAF treatment.Moreover,the activity of alkaline phosphatase(AKP)was significantly decreased in all BPAF exposure groups.In conclusion,exposure to BPAF at environmental relevant concentrations affected the early development and immune system of zebrafish larvae by modulating MAPK signaling pathway,and our results provide solid evidence for the future studies on the toxicity of bisphenols. | Rongzhen Li Shuai Liu Wenhui Qiu Feng Yang Yi Zheng Ying Xiong Guanrong Li Chunmiao Zheng | 2020 | Environmental Science and Ecotechnology2020，，4： | 0 |
| 10 | Uplink Power Control for MIMO-OFDMA Cellular Systems显示文摘In this paper, we propose a novel uplink power control algorithm, SMST, for multiple-input multiple-output orthogonal frequency-division multiple access (MIMO-OFDMA).We perform an extensive system-level simulation to compare different uplink power control algorithms, including the FPC adopted in 3GPP LTE and LTE-Advanced. Simulations show that SMST adopted in IEEE 802.16m outperforms other algorithms in terms of spectral efficiency, cell-edge performance, interference control, and trade-off control between sector-accumulated throughput and cell-edge user throughput. The SMST performance gain over FPC can be more than 40%. | Rongzhen Yang Hujun Yin | 2011 | ZTE Communications2011，9，4： | 0 |
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