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Communications in Theoretical Physics 2009年第2期51卷 247-251页

作者： TANG Shi-Qing zhanG Deng-yu XIE Li-Jun zhan Xiao-Gui GAO feng Faculty of Material and Photoelectronic Physics Xiangtan University Xiangtan 411005 China Department of Physics and Electronic Information Science Hengyang Normal University Hengyang 421008 China

We propose a scheme for realization a quantum Controlled-NOT gate operation using two four-level atoms through a selective atom cavity interaction in cavity quantum electrodynamics system. In our protocol, the quantum information is encoded on the stable ground states of the two atoms. During the interaction between atoms and single-mode vacuum cavity-field, the atomic spontaneous emission is negligible as the large atom-cavity detuning effectively suppresses the spontaneous decay of the atoms. The influences of the dissipation and the deviation of interaction time on fidelity and corresponding success probability of the quantum Controlled-NOT gate and the experimental feasibility of our proposal are also discussed.

关键词： controlled-NOT gate four-level atom cavity QED fidelity

Controlled Telecloning and Teleflipping for One-Qubit Pure States

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Communications in Theoretical Physics 2009年第6期51卷 1023-1026页

作者： zhan Xiao-Gui zhanG Deng-yu GAO feng LI Yan-Ling ZENG Hao-Sheng Department of Physics Hengyang Normal University Hengyang 421008 China Department of Physics Hunan Normal University Changsha 410081 China

We propose a scheme for realizing controlled 1→2 telecloning and 1 →1 teleflipping for one-qubit pure states via a quantum network including N agents. The quantum operations used in the information-transmission process are just only one Bell-state measurement, and a series of single-qubit operation. It is shown that the fidelities of the controlled telecloning and teleflipping are independent of the initial states and reach their optimal values of 5/6 and 2/3 respectively on the condition that all the agents collaborate. If any one agent does not cooperate, the fidelities become state-dependent and are always smaller than the corresponding optimal values. The average fidelities are equal to the balanced value 1/2, which implies that on average the state ineepted by any one of the receivers is a fuUy mixed state. Thus no information leaks out to any dishonest receivers. The security of telecloning and teleflipping have been increased greatly.

关键词： controlled telecloning controlled teleflipping agent

A positively charged silver nanowire membrane for rapid on-site swabbing extraction and detection of trace inorganic explosives using a portable Raman spectrometer

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Nano Research 2016年第8期9卷 2487-2497页

作者： yu-e Shi Wenshou Wang Jinhua zhan National Engineering Research Center for Colloidal Materials and Key Laboratory of Colloid and Interface Chemistry of Ministry ofEducation Department of Chemistry Shandong University Jinan 250100 China

The sensitive and on-site detection of inorganic explosives has raised serious concerns regarding public safety. However, high stability and non-volatility features currently limit their rapid on-site detection. Surface-enhanced Raman spectroscopy （SERS） is emerging as a powerful technique for the trace-level detection of different molecules. Plasmonic Ag nanowires were produced by a hydrothermal synthesis method using polyvinylpyrrolidone （PVP） as a negatively charged stabilizer. Here, we report a rapid detection method for inorganic explosives based on a simple surface swab with a positively charged diethyldithiocarbamate-modified Ag nanowire membrane coupled with SERS. This membrane, serving as an excellent SERS substrate with high uniformity, stability, and reusability, can capture both typical oxidizers in inorganic explosives and organic nitro-explosives, via electrostatic interaction. The detection level of perchlorates （ClO4-）, chlorates （ClO3-）, nitrates （NO3）-, picric acid, and 2,4- dinitrophenol is as high as 2.0, 1.7, 0.1, 45.8, and 36.6 ng, respectively. In addition, simulated typical inorganic explosives such as black powders, firecrackers, and match heads could also be detected. We believe that this membrane represents an attractive alternative for rapid on-site detection of inorganic explosives with high efficiency.

关键词： Ag explosives nanowire surface-enhanced Ramanscattering on-site detection

Morphology and phylogeny of Chrysogorgia pinniformis *** *** ***.,two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean

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Journal of Oceanology and Limnology 2021年第5期39卷 1767-1789页

作者： yu XU Zifeng zhan Kuidong XU Laboratory of Marine Organism Taxonomy and Phylogeny Shandong Province Key Laboratory of Experimental Marine BiologyInstitute of OceanologyCenter for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China University of Chinese Academy of Sciences Beijing 100049China

Two new species of Chrysogorgia Duchassaing&Michelotti,1864 collected from the Caroline seamounts in the tropical Western Pacific Ocean are *** pinniformis *** to Versluys’group C(Squamosae typicae)with only scales in polyp body wall and *** *** characterized by large branches pinnately branched and forming multiple fans with its small branches regularly and quasi-dichotomous branched,and scales and rods present in the polyp mouth *** is most similar to *** Cairns,2007 by the pinnate trait,but differs from the latter by its group C pattern(*** A,Spiculosae)and having sclerites present in the polyp mouth area(***).Chrysogorgia varians *** to the Chrysogorgia group A(Spiculosae)with rods distributed in the polyp body wall and *** is characterized by warty rods and elongated scales in the tentacles,many warts and ridges on the scales,conspicuously toothed margins at the rounded ends in the pinnules,and small rods with ridge-like warts in the polyp mouth *** species was frequent and abundant in the Caroline seamounts during our cruises and its morphological variability in growth period was *** phylogenetic analyses based on mtMutS and 28 S rDNA regions supported the assignment of the new species to the genus ***,the mtMutS marker showed very limited usefulness for species delimitation and inner relationship inference of *** contrast,the 28 S rDNA showed much higher level of genetic variation,and it may be a potential barcode for this *** the 28 S rDNA trees,the two new species clustered ***,compilation of our data showed that 42 of 78(ca.54%)Chrysogorgia species were found in the Indo-West Pacific convergent region,indicating that this area may be a hotspot of deep-water Chrysogorgia species.

关键词： Anthozoa Octocorallia Chrysogorgiidae deep sea taxonomy

Optimization of Mineralization Curing System for Efficient and Safe Utilization of Steel Slag Wastes

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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 595-602页

作者： YI Haihe zhan Qiwei yu Xiaoniu School of Civil and Architectural Engineering Shandong University of TechnologyZibo 255000China School of Civil Engineering and Architecture Jiangsu University of Science and TechnologyZhenjiang 212003China Department of Civil and Environmental Engineering Nanyang Technological UniversitySingapore City 639798Singapore

The crystal structure and morphology of the mineralization products were studied by scanning electron microscopy(SEM)and X-ray diffraction(XRD),and the thermal properties were studied by thermogravimetric-differential scanning calorimetry(DSC)*** changes of microorganism quantity and enzyme activity in pore solution with time were *** experimental results show that microorganism quantity and enzyme activity in pore solution reach the maximum at 50-60 h,mineralization curing begins at this time,the strength of microbial mineralized steel slag reaches the *** study provides a good selection basis for selecting the optimum mineralization system for the production of microbial mineralized steel slag *** mineralization can accelerate the rate of carbon sequestration in the mineralization *** compressive strength of steel slag with 1.5% bacterial can reach up to 55.6 *** microstructure and thermal properties of calcium carbonate precipitate induced by the enzymes of bacillus subtilis differs from the chemical precipitation in pore solution of steel *** the analysis of the mineralized products of steel slag,the reaction rate of free calcium oxide and free magnesium oxide in steel slag after the addition of microorganisms is significantly increased,which improves the stability of steel slag as cementitious ***,the production of calcium carbonate,the main mineralized product,is significantly increased.

关键词： steel slag microorganism bio-mineralization enzyme activity curing system

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巴西龟代谢性骨病CT诊断病例报告

动物医学进展 2025年第1期46卷 141-144页

作者：孙嘉徐甘靖宇江蓝刘波俞峰中国农业大学北京100193

代谢性骨病(MBD)是一种因钙缺乏或维生素D 3摄入不足引起的骨骼代谢障碍疾病,其临床表现为骨折、脊椎异常、难产、脱垂等症状。计算机断层扫描(CT)在兽医临床中应用的逐渐增加为龟、鳖类MBD提供了新的诊断方式。该病例中红耳巴西龟血检... 详细信息

代谢性骨病(MBD)是一种因钙缺乏或维生素D 3摄入不足引起的骨骼代谢障碍疾病,其临床表现为骨折、脊椎异常、难产、脱垂等症状。计算机断层扫描(CT)在兽医临床中应用的逐渐增加为龟、鳖类MBD提供了新的诊断方式。该病例中红耳巴西龟血检结果提示其肾脏、肝脏功能损害,钙磷代谢异常。CT扫查提示患龟全身组织大面积矿化、背甲凹陷,定量测量患龟背椎骨、神经骨和胸膜骨3处的骨骼密度远低于正常龟,诊断患龟有严重的MBD。治疗方案为对症治疗、改善饲养管理条件,同时对该龟补充维生素D 3。该病例报告系统陈述了龟鳖MBD的诊疗流程,同时表明了CT扫查可为龟鳖MBD精确诊断、治疗和预后提供新的参考。

关键词：龟代谢性骨病计算机断层扫描骨密度

Thin-walled and large-sized magnesium alloy die castings for passenger car cockpit:Application,materials,and manufacture

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China Foundry 2024年第5期21卷 525-545页

作者： Lei zhan yu-meng Sun Yang Song Chun-hua Kong Kai Ma Bai-xin Dong Hong-yu Yang Shi-li Shu feng Qiu School of Automotive Engineering Jilin Communication PolytechnicChangchun 130012China Key Laboratory of Automobile Materials of Ministry of Education School of Materials Science and EngineeringNanling CampusJilin UniversityChangchun 130025China

In order to effectively reduce energy consumption and increase range mile,new energy vehicles represented by Tesla have greatly aroused the application of integrated magnesium(Mg)alloy die casting technology in ***,the application of Mg alloys in automobiles,especially in automotive cockpit components,is quite extensive,while it has almost disappeared for a period of time due to its relatively high cost,causing a certain degree of information loss in the application technology of Mg alloy parts in *** rapid development of automotive technology has led to a higher requirement for the automotive components compared with those traditional ***,whatever the components themselves,or the Mg alloy materials and die casting process have to face an increasing challenge,needing to be *** addition,owing to its high integration characteristics,the application of Mg alloy die casting technology in large-sized and thin-walled automotive parts has inherent advantages and needs to be expanded ***,it necessitates exploring advance Mg alloys and new product structures and optimizing die casting *** article summarizes and analyzes the development status of thin-walled and large-sized die casting Mg alloy parts in passenger car cockpit and corresponding material selection methods,die casting processes as well as mold design ***,this work will aid researchers in establishing a comprehensive understanding of the manufacture of thin-walled and large-sized die casting Mg alloy parts in automobile *** will also assist them in developing new Mg alloys with improved comprehensive performance and new processes to meet the high requirements for die casting automotive components.

关键词： Mg alloys thin wall large size automotive part die casting

Characterizing and Estimating Fungal Disease Severity of Rice Brown Spot with Hyperspectral Reflectance Data

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Rice science 2008年第3期15卷 232-242页

作者： LIU zhan-yu HUANG Jing-feng TAO Rong-xiang Institute of Agricultural Remote Sensing ＆ Information System Application Zhejiang University Hangzhou 310029 China Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences Hangzhou 310021 China

Large-scale farming of agriculture crops requires real-time detection of disease for field pest management. Hyperspectral remote sensing data generally have high spectral resolution, which could be very useful for detecting disease stress in green vegetation at the leaf and canopy levels. In this study, hyperspectral reflectances of rice in the laboratory and field were measured to characterize the spectral regions and wavebands, which were the most sensitive to rice brown spot infected by Bipolaris oryzae （Helminthosporium oryzae Breda. de Hann）. Leaf reflectance increased at the ranges of 450 to 500 nm and 630 to 680 nm with the increasing percentage of infected leaf surface, and decreased at the ranges of 520 to 580 nm, 760 to 790 nm, 1550 to 1750 nm, and 2080 to 2350 nm with the increasing percentage of infected leaf surface respectively. The sensitivity analysis and derivative technique were used to select the sensitive wavebands for the detection of rice brown spot infected by B. oryzae. Ratios of rice leaf reflectance were evaluated as indicators of brown spot. R669/R746 （the reflectance at 669 nm divided by the reflectance at 746 nm, the following ratios may be deduced by analogy）, R702/R718, R692/R530, R692/R732, R535/R746, R521/R718, and R569/R718 increased significantly as the incidence of rice brown spot increased regardless of whether it＇s at the leaf or canopy level. R702/R718, R692/R530, R692/R732 were the best three ratios for estimating the disease severity of rice brown spot at the leaf and canopy levels. This result not only confirms the capability of hyperspectral remote sensing data in characterizing crop disease for precision pest management in the real world, but also testifies that the ratios of crop reflectance is a useful method to estimate crop disease severity.

关键词： derivative spectrum hyperspectral reflectance ratio of spectral reflectance rice brown spot disease severity Bipolaris oryzae ( Helminthosporium oryzae) sensitivity analysis remote sensing

Effect of vacuum degree and aeration rate on sludge dewatering behavior with the aeration-vacuum method

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第9期11卷 638-655页

作者： yu-feng GAO Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai University Nanjing 210098 China Geotechnical Research Institute Hohai University Nanjing 210098 China The Science and Technology Division Hohai University Nanjing 210098 China

Due to large-scale dredging operations, a large amount of sludge is inevitably produced. Large areas of land are occupied when the dredged sludge is discarded in the disposal site as waste material. The sludge dewatering with aeration-vacuum (SDAV) method is suit for treating the sludge with high water content and high clay content in the disposal site. The water in the sludge can be discharged out. The volume of the sludge can be reduced quickly, and the recycling of the land can be accelerated by this method. Most importantly, this technique is an efficient way to deal with clogging problems when pumping water from high water content, high clay content dredged sludge. Vacuum degree range tests, the aeration rate range tests, and the influencing factors of sludge dewatering behavior tests were conducted with a self-developed SDAV model test device. Sludge samples were taken from the South-to-North Water Diversion East Line Project in Huai’an White-Horse Lake disposal site, Jiangsu Province, China. The optimal range of vacuum degree and aeration rate were obtained through the test results, and the mechanisms for how the two factors work and how they affect the sludge dewatering behavior were analyzed. The suitable vacuum degree range in SDAV is below 50 kPa, and the suitable aeration rate is about 1.0 m3/h. The low-vacuum degree contributes to reduce the ad-sorption effect of micro-channels on soil particles in filter material and to maintain the arch structures. Aeration has the effects of expansion, disturbance, changing Reynolds number, and dynamic sieve separating. The pump quantity of water per meter of filter tube (m) has different change rules as the vacuum degree changes under different aeration rates. The reason is that the formed arch structures’ conformation and permeability differ greatly under different combined-conditions of vacuum degree and aeration rate. The optimal combined-condition for dewatering the sludge is 35 kPa with 1.0 m3/h.

关键词： High water content dredged sludge Sludge dewatering with aeration-vacuum (SDAV) Vacuum degree Aeration rate Arch structures

Thermodynamic Performance Comparison and Optimization of sCO_(2)Brayton Cycle,tCO_(2)Brayton Cycle and tCO_(2)Rankine Cycle

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Journal of Thermal Science 2023年第2期32卷 611-627页

作者： JIANG yu zhan Li TIAN Xuelian NIE Changhua Nuclear Power Institute of China Chengdu 610213China

In this paper,to further improve thermodynamic performance of supercritical carbon dioxide cycle,simple/recompression transcritical carbon dioxide Brayton cycle(STBC/RTBC)and simple/recompression transcritical carbon dioxide Rankine cycle(STRC/RTRC)are *** and exergy performance analysis and optimization for the above four transcritical CO_(2)cycles and simple/recompression supercritical cycle(SSBC/RSBC)are *** effect of key thermodynamic parameters on those CO_(2)cycle performance is *** indicate that the improvements of thermodynamic performance of CO_(2)cycle are obvious when transcritical Brayton and Rankine cycle are applied in *** the same range of optimization variables,the maximum thermal efficiency improvements of RTRC and RTBC are 4.98%and 3.6%,and maximum exergy efficiency improvements of RTRC and RTBC are 7.08%and 5.13%when compared with ***,the thermodynamic performances of STBC and STRC are also outstanding than that of *** work provides a way to further improve the thermodynamic performance of CO_(2)power cycle.

关键词： thermodynamic performance supercritical carbon dioxide transcritical carbon dioxide Brayton cycle Rankine cycle