检索结果-南通市图书馆

Experimental quantum secure direct communication with single photons

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2016年第1期5卷 487-491页

作者： Jian-Yong Hu Bo Yu Ming-Yong Jing Lian-Tuan Xiao Suo-Tang Jia Guo-Qing Qin gui-Lu Long State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuanShanxi 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100084China Tsinghua National Laboratory for Information Science and Technology Tsinghua UniversityBeijing 100084China

Quantum secure direct communication is an important mode of quantum communication in which secret messages are securely communicated directly over a quantum *** secure direct communication is also a basic cryptographic primitive for constructing other quantum communication tasks,such as quantum authentication and quantum ***,we report the first experimental demonstration of quantum secure direct communication based on the DL04 protocol and equipped with single-photon frequency coding that explicitly demonstrated block *** our experiment,we provided 16 different frequency channels,equivalent to a nibble of four-bit binary numbers for direct information *** experiment firmly demonstrated the feasibility of quantum secure direct communication in the presence of noise and loss.

关键词： block transmission channel loss and noise DL04 protocol quantum secure direct communication single-photon frequency coding

铁酸钠对含铁矿物碳热还原过程铁粒形成的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学报 2016年第5期26卷 1129-1135页

作者：李小斌王一霖周秋生彭志宏刘桂华齐天贵中南大学冶金与环境学院长沙410083 中南大学难冶有色金属资源高效利用国家工程实验室长沙410083

通过热力学计算、动力学试验以及还原产物微观形貌扫描电镜分析,研究Na_2O·Fe_2O_3在Fe_2O_3/MgFe_2O_4-Na_2CO_3-C还原体系中的作用。结果表明:在该体系中,Na_2CO_3与Fe_2O_3或MgFe_2O_4快速反应生成更易被碳还原的Na_2O·Fe_2O_3,从... 详细信息

通过热力学计算、动力学试验以及还原产物微观形貌扫描电镜分析,研究Na_2O·Fe_2O_3在Fe_2O_3/MgFe_2O_4-Na_2CO_3-C还原体系中的作用。结果表明:在该体系中,Na_2CO_3与Fe_2O_3或MgFe_2O_4快速反应生成更易被碳还原的Na_2O·Fe_2O_3,从而降低还原反应的起始温度,并加速反应的进行;Na_2O·Fe_2O_3还能促进含铁矿物碳热还原过程中铁晶粒的长大,有利于后续铁矿物的磁选分离。

关键词：冶金废渣碳酸钠还原焙烧铁酸钠

跨国公司在华研究与开发投资区位选择的实证研究

在线全文

学校读者我要写书评

暂无评论

国际贸易问题 2007年第6期 100-104页

作者：唐礼智戴贵芬厦门大学经济研究所

本文选取我国吸引跨国公司研究与开发机构最多的前10位省份或直辖市的横截面数据,对跨国公司在华研究与开发投资区位选择的影响因素做实证分析。研究结果表明,跨国公司在华研究与开发机构的区位分布与区域的劳动力成本、通讯设施水平、... 详细信息

本文选取我国吸引跨国公司研究与开发机构最多的前10位省份或直辖市的横截面数据,对跨国公司在华研究与开发投资区位选择的影响因素做实证分析。研究结果表明,跨国公司在华研究与开发机构的区位分布与区域的劳动力成本、通讯设施水平、市场规模、科技实力以及对知识产权的保护和重视程度等因素呈正相关关系。

关键词：跨国公司研究与开发区位选择因子分析法

模糊控制器在船舶动力定位系统中的应用及改进

在线全文

学校读者我要写书评

暂无评论

中国造船 2005年第4期46卷 26-30页

作者：张桂兰邓志良江苏科技大学电子与信息系江苏镇江212003

本文研究了船舶动力定位中模糊控制的应用问题,探讨了模糊控制中隶属函数和模糊规则的具体制定,并应用可变论域的思想对模糊控制器进行改进。对船舶的纵向运动进行了控制与仿真,并且做了比较与分析。仿真结果表明,改进的模糊控制器能对... 详细信息

本文研究了船舶动力定位中模糊控制的应用问题,探讨了模糊控制中隶属函数和模糊规则的具体制定,并应用可变论域的思想对模糊控制器进行改进。对船舶的纵向运动进行了控制与仿真,并且做了比较与分析。仿真结果表明,改进的模糊控制器能对船舶的动力定位实施更有效的控制。

关键词：船舶舰船工程模糊控制动力定位可变论域仿真

Chidamide and sintilimab combination in diffuse large B-cell lymphoma progressing after chimeric antigen receptor T therapy

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第19期10卷 6555-6562页

作者： Yuan-Yuan Hao Pan-Pan Chen Xiang-gui Yuan Ai-Qi Zhao Yun Liang Hui Liu Wen-Bin Qian Department of Hematology The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

BACKGROUND Diffuse large B-cell lymphoma(DLBCL)is curable with first-line chemoimmunotherapy but patients with relapsed/refractory(R/R)DLBCL still face a poor *** patients with R/R DLBCL,the complete response rate to traditional next-line therapy is only 7%and the median overall survival is 6.3 ***,CD19-targeting chimeric antigen receptor T cells(CAR-T)have shown promise in clinical ***,approximately 50%of patients treated with CAR-T cells ultimately progress and few salvage therapies are *** SUMMARY Here,we report on 7 patients with R/R DLBCL whose disease progressed after CAR-T *** received a PD-1 inhibitor(sintilimab)and a histone deacetylase inhibitor(chidamide).Five of the 7 patients tolerated the treatment without any serious adverse *** patients discontinued the treatment due to lung infection and *** the 20-mo follow-up,the median overall survival of these 7 patients was 6 *** note,there were 2 complete response rates(CRs)and 2 partial response rates(PRs)during this novel therapy,with an overall response rate(ORR)of 57.1%,and one patient had a durable CR that lasted at least 20 *** In conclusion,chidamide combined with sintilimab may be a choice for DLBCL patients progressing after CD19-targeting CAR-T therapy.

关键词： Chimeric antigen receptor T cell therapy Diffuse large B-cell lymphoma Immunotherapy PD-1 inhibitor Histone deacetylase inhibitor Case report

Selective photosynthesis of Z-olefins through crystalline metal-organic cage-initiated expeditious cascade reactions

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Carbon Energy 2024年第3期6卷 118-131页

作者： Jia-Ni Lu Yunze Huang Yuan-Sheng Xia Long-Zhang Dong Lei Zhang Jing-Jing Liu Lan-gui Xie Jiang Liu Ya-Qian Lan Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials ScienceJiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsNanjing Normal UniversityNanjingChina School of Chemistry South China Normal UniversityGuangzhouChina

The semi-hydrogenation of alkyne to form Z-olefins with high conversion and high selectivity is still a huge challenge in the chemical ***,flammable and explosive hydrogen as the common hydrogen source of this reaction increases the cost and danger of industrial ***,we connect the photocatalytic hydrogen evolution reaction and the semihydrogenation reaction of alkynes in series and successfully realize the high selective production of Z-alkenes using low-cost,safe,and green water as the proton *** the cascade reaction,a series of isomorphic metal–organic cage catalysts(Co_(x)Zn_(8−x)L_(6),x=0,3,4,5,and 8)are designed and synthesized to improve the yield of the photocatalytic hydrogen *** them,Co_(5)Zn_(3)L_(6) shows the highest photocatalytic activity,with a H_(2) generation rate of 8.81 mmol g^(−1) h^(−1).Then,Co_(5)Zn_(3)L_(6) is further applied in the above tandem reaction to efficiently reduce alkynes to Z-alkenes under ambient conditions,which can reach high conversion of>98%and high selectivity of>99%,and maintain original catalytic activity after multiple ***“one-pot”tandem reaction can achieve a highly selective and safe stepwise conversion from water into hydrogen into Z-olefins under mild reaction conditions.

关键词： alkyne semi-hydrogenation hydrogen evolution reaction metal-organic cages photocatalysis Z-olefins

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

对泰安市岩溶水保护分区的探讨

山东农业大学学报（自然科学版） 2006年第1期37卷 113-116页

作者：宋桂芸尹会永隋岩刚刘永贵山东科技大学地球信息科学与工程学院泰安271019

泰安地处北方石灰岩地区,是一个以岩溶地下水为主要供水水源的城市。近年来已有大面积岩溶水污染。根据其富水规律、目前岩溶水遭受污染的情况以及地质、水文地质的综合分析,对岩溶水进行了保护分区,并提出各级保护措施。

关键词：岩溶水污染分区保护措施水文地质

CoHopficity of Self-Injective Rings

在线全文

学校读者我要写书评

暂无评论

Journal of Mathematical Research and Exposition 2001年第2期21卷 203-206页

作者：郝志峰冯良贵华南理工大学应用数学系广东广州510641 国防科技大学七系湖南长沙410073

It is shown that a self-injective ring R is coHofian ring if and only if R has stable range one. This answers the open problem 5 of Varadarajian in [9] for self- injective ring R,i.e.,Mn(R) is coHopfian for coHopfian ring R. As a consequence of we answer problem of Goodeal in the affirmative in [3], for self-injective regular rings.

关键词： coHopfian rings self-injective rings stable range one.

在线全文

学校读者我要写书评

暂无评论

氮、磷、碳化物比较研究初探

燃料化学学报 2007年第3期35卷 380-384页

作者：孙磊周志军孙桂大北京化工大学北京100029 北京石油化工学院北京102617

γ-Al2O3-supported molybdenum nitride,molybdenum phosphide and molybdenum carbide catalysts for hydrodesulphurization were prepared,respectively,by temperature-programmed *** precursors were obtained by impregnation of γ-Al2O3 in an aqueous solution of ammonium heptamolybdate tetrahydrate [(NH4)6Mo7O24·4H2O] and diammonium hydrogen phosphate [(NH4)2HPO4],followed by drying at 120 ℃ and calcining at 500 ℃ in *** three kinds of catalysts were characterized by XRD and *** results indicated that the molybdenum carbide prepared at a space velocity(CH4-H2) of 10 800 h-1 has the biggest surface area of 175.7 m2/*** pore size distribution of molybdenum nitride catalyst was *** small pores of about 0.622 5 nm and the big pores of about 3.736 nm were mainly observed in the supported molybdenum nitride *** active components in all of the three catalysts were dispersed on γ-Al2O3 *** conversion of dibenzothiophene on the three catalysts could respectively reach 85.5%、81% and 78.6%.

关键词：氮化钼磷化钼碳化钼加氢脱硫比较研究