检索结果-南通市图书馆

Spin-orbit hybrid entanglement quantum key distribution scheme

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2014年第11期57卷 2043-2048页

作者： ZHANG ChengXian guo BangHong CHENG GuangMing guo jianjun FAN RongHua Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and EngineeringSouth China Normal University

We propose a novel quantum key distribution scheme by using the SAM-OAM hybrid entangled state as the physical *** obtain this state,the polarization entangled photon pairs are created by the spontaneous parametric down conversion process,and then,the q-plate acts as a SAM-to-OAM transverter to transform the polarization entangled pairs into the hybrid entangled pattern,which opens the possibility to exploit the features of the higher-dimensional space of OAM state to encode *** the manipulation and encoding process,Alice performs the SAM measurement by modulating the polarization stateπ lθx on one photon,whereas Bob modulates the OAM sector state lx' on the other photon to encode his key elements using the designed holograms which is implemented by the computer-controlled *** coincidence measurement,Alice could extract the key *** is showed that N-based keys can be encoded with each pair of entangled photon,and this scheme is robust against Eve’s individual ***,the MUBs are not *** and Bob do not need the classical communication for the key recovery.

关键词： entanglement entangled modulating coincidence photon superposition encode manipulation spontaneous orbit

Wetting Behaviors and Interfacial Reaction between Sn-10Sb-5Cu High Temperature Lead-free Solder and Cu Substrate

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2010年第2期26卷 156-162页

作者： Qiulian Zeng jianjun guo Xiaolong Gu Xinbing Zhao Xiaogang Liu Zhejiang Province Key laboratory of Soldering &: Brazing Materials and Technology Zhejiang Metallurgical Research Institute Hangzhou 310011 China Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Sn-10Sb-5Cu lead-free solder was fabricated for high temperature application in electronic package. Wetting behaviors and interfacial reaction between such a high temperature lead-free solder and Cu substrate were investigated and compared with those of 95Pb-Sn solder. The results showed that the wetting properties of Sn-10Sb-SCu solder are superior to those of 95Pb-Sn solder in maximum wetting force, wetting time and wetting angle in the temperature range of 340-400℃. However, the surface of the Sn-10Sb-5Cu solder sample after wetting balance tests was rougher than that of 95Pb-Sn solder at the temperature lower than 360℃. In static liquid-state interracial reaction, the types and thickness of the intermetallic compounds （IMCs） of both solders were different from each other. The wetting kinetics in the Sn-10Sb-5Cu/Cu system was more rapid than that in 95Pb-Sn/Cu system, and the higher formation rate of IMCs in the former system was considered as the reason.

关键词： Wetting Interfacial reaction High temperature lead-free solder Sn-10Sb-5Cu solder

Solderability of Electrodeposited Fe-Ni Alloys with Eutectic SnAgCu Solder

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2007年第6期23卷 811-816页

作者： jianjun guo Lei ZHANG Aiping XIAN J.K.Shang Sh-enyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Department of Materials Science and Engineering University of Illinois at Urbana-Champaign Urbana IL 61801 USA

Solderabilities of electrodeposited Fe-Ni alloys with SnAgCu solder were examined by wetting balance measurements and compared to those of pure Ni and pure Fe platings. Excellent solderability was found on the Ni-52Fe plating as both the wetting force and kinetics approached or exceeded those on the pure Ni. However, upon further increase in Fe content to 75 at. pct, the solderability of the alloy was severely degraded even though it was still better than that of the pure Fe plating. X-ray photoelectron spectroscopy showed that such a strong dependence of solderability on Fe content is related to the much thinner, incomplete oxide coverage of Ni-rich plating surface.

关键词： Solderability FeNi alloys Lead-free solders Wetting

A new species of the genus Stygothrombium, representing a newly recorded superfamily Stygothrombioidea Mullen & Vercammen-Grandjean, 1980(Acari: Stygothrombiae) from China

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2021年第4期46卷 281-288页

作者： Haitao Li Daochao Jin jianjun guo Institute of Entomology Guizhou UniversityScientific Observing and Experimental Station of Crop Pests in GuiyangMinistry of Agricultural and Rural AffairsP.R.ChinaGuiyang 550025P.R.China

The paper deals with a species new to science,Stygothrombium garzensis Li&guo,***.,collected from Qinghai-Tibet Plateau,***,which represents a newly recorded superfamily Stygothrombioidea Mullen&Vercammen-Grandjean,1980 to Chinese *** new species is described and illustrated in detail,especially the quantity and characteristic of idiosomal glandularia,with the diagnosis of infracapitulum base approximately 3.5 times as long as rostrum,the second pair of posterior setae on prodorsal plate about half length of posterior portion of prodorsal plate and the second ventroglandularia between the third acetabula and inner posterior angle of the fourth coxae,located at one-third of interval near the third acetabula approximately.

关键词： Taxonomy aquatic mite Parasitengonina new record

Non-Oxidative Aromatization of CH4-C_3H_8 over La-Promoted Zn/HZSM-5 Catalysts

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2006年第1期15卷 52-57页

作者： Lihe Zheng Dong Xuan jianjun guo Hui Lou Xiaoming Zheng Institute of Catalysis Chemistry Department Zhejiang University Hangzhou 310028 China

The non-oxidative aromatization of mixed CH4 with C3H8 over La-promoted Zn/HZSM-5 catalysts was studied in a fixed-bed reactor at 823 K with space velocity 600 h^-1 and CH4/C3H8 （mol ratio）=5：l. The propane conversion and the aromatic selectivities were up to 99% and 60% over the catalyst respectively, while methane conversion had an induction period with the highest conversion of 30%. The structure and surface acidity of the catalysts were characterized by XRD, NH3-TPD and TG-DTA. The influences of reaction and regenerative conditions on the activity and selectivity were also investigated.

关键词： aromatization methane propane regeneration La Zn HZSM-5

Wandesia(***.)boyani Li&guo,***.,a new species representing a newly recorded subfamily Wandesiinae Schwoerbel,1961 from China

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2021年第2期46卷 176-181页

作者： Haitao Li Xinyao Gu Daochao Jin jianjun guo Institute of Entomology Guizhou UniversityGuizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous RegionScientific Observing and Experimental Station of Crop Pests in GuiyangMinistry of Agriculture and Rural Affairs of the People's Republic of ChinaGuiyang 550025P.R.China

A new species,Wandesia(***.)boyani Li&guo,***.,is described and illustrated in detail,which is collected from Qinghai-Tibet plateau,***,and represents a newly recorded subfamily Wandesiinae(Acari:Hydrachnidiae:Hydryphantidae)to Chinese *** new species is distinguished from its congeners by having stalked acetabula ranged triangularly,developed pregenital sclerite lily-like,E4 at the middle of Ac-1 and Ac-2.

关键词： Taxonomy water mite new species new record Sichuan

Abscisic Acid Receptors:Past,Present and Future

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2011年第6期53卷 469-479页

作者： jianjun guo Xiaohan Yang David J. Weston Jin-Gui Chen Department of Genetics Harvard Medical School Boston Massachusetts 02114-2790 USA Department of Molecular Biology Massachusetts General Hospital Boston Massachusetts 02114-2790 USA Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831-6422 USA

acid （ABA） is the key plant stress hormone. Consistent with the earlier studies in support of the presence of both membrane- and cytoplasm-localized ABA receptors, recent studies have identified multi- ple ABA receptors located in various subcellular locations. These include a chloroplast envelope-localized receptor （the H subunit of Chloro- plast Mg2＋-chelatase/ABA Receptor）, two plasma membrane-localized receptors （G-protein Coupled Receptor 2 and GPCR-type G proteins）, and one cytosol/nucleus-localized Pyrabactin Resistant （PYR）/PYR-Like （PYL）/Regulatory Component of ABA Receptor 1 （RCAR）. Although the downstream molecular events for most of the identified ABA receptors are currently unknown, one of them, PYR/PYL/RCAR was found to directly bind and regulate the activity of a long-known central regulator of ABA signaling, the A-group protein phosphatase 2C （PP2C）. Together with the Sucrose Non-fermentation Kinase Subfamily 2 （SnRK2s） protein kinases, a central signaling complex （ABA-PYR-PP2Cs-SnRK2s） that is responsible for ABA signal perception and transduction is supported by abundant genetic, physiological, biochemical and structural evidence. The identification of multiple ABA receptors has advanced our understanding of ABA signal perception and transduction while adding an extra layer of complexity.

关键词： ABA ChlH/ABAPJCCH/GUN5 FCA GCR2 GTGIlGTG2 PYLIPYL/RCAR.

A newly recorded and a new species of torrenticolid mites (Acari:Hydrachnidiae) from China

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2023年第1期48卷 100-105页

作者： Lan Jia Xinyao Gu Daochao Jin jianjun guo Institute of Entomology Guizhou UniversityScientific Observing and Experimental Station of Crop Pest in GuiyangMinistry of Agriculture and Rural Affairs of the P.R.ChinaGuiyang 550025China

A new species of Torrenticola(Acari:Hydrachnidia)is reported from China,namely T.(T.)gladiusirostrum Jia,Gu&guo,*** T.(Megapalpis)distans ***,1981 is recorded in China for the first *** descriptions and illustrations of these species are *** new species is characteristic by:dorsal plate arrangement 2+1;infracapitular bay U-shaped,deep and wide,V2 almost at same level of Ap;gnathosoma ventral apodeme short and blunt,rostrum flat and sword-shaped;P-2 and P-3 ventral processes smooth and pointed,and P-2 ventral process curved upwards,P-4 with two ventral extensions.

关键词： Water mites morphology taxonomy running waters Chinese fauna

Integrative approach of morphology and geometric morphometrics to species delimiation in Torrenticolidae(Acari:Hydrachnidiae)

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2022年第2期47卷 117-131页

作者： Xinyao Gu Haichuan Xiao Daochao Jin jianjun guo Institute of Entomology Guizhou UniversityGuizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous RegionScientific Observing and Experimental Station of Crop Pest in GuiyangMinistry of AgricultureP.R.ChinaGuiyang 550025P.R.China Chongqing Pengshui Senior High School Chongqing 409600P.R.China

This paper explores the integrative utilization of morphology and geometric morphometrics in order to deal with sibling species in Torrenticolidae. The results suggest:(1) Features of anterior margins of coxae, dorsoglandularia 1–4 and infracapitulum can be utilized in landmark-based geometric morphometrics approach;(2) A new species, Torrenticola brevisuturae Gu & guo, sp. nov., is reported in this paper.

关键词： Torrenticolid mite integrative taxonomy morphology new species