检索结果-南通市图书馆

基于f.GA的TANGRAM分组密码算法实现

在线全文

学校读者我要写书评

暂无评论

计算机应用研究 2024年第1期41卷 260-265页

作者：王建新许弘可郑玉崝肖超恩张磊洪睿鹏北京电子科技学院北京100070

TANGRAM系列分组密码算法是一种采用比特切片方法,适合多种软硬件平台的系列分组密码算法。针对TANGRAM-128/128算法,使用Verilog HDL对该算法进行f.GA实现并提出设计方案。首先,介绍了TANGRAM密码算法的特点和流程,提出了针对TANGRAM... 详细信息

TANGRAM系列分组密码算法是一种采用比特切片方法,适合多种软硬件平台的系列分组密码算法。针对TANGRAM-128/128算法,使用Verilog HDL对该算法进行f.GA实现并提出设计方案。首先,介绍了TANGRAM密码算法的特点和流程,提出了针对TANGRAM密码算法进行44轮加/解密迭代计算的方案,该方案采取有限状态机的方法有效降低了资源消耗;其次,基于国产高云云源平台,完成了基于高云f.GA的算法工程实现,以及功能仿真和数据的正确性验证,同时在QuartusⅡ13.1.0平台上也进行了相关测试,用以比较。测试结果表明,TANGRAM系列分组密码算法基于Altera公司的CycloneⅣE系列EP4CE40f.9C6芯片进行工程实现,最大时钟频率为138.64 MHz,加/解密速率为403.30 Mbps;基于高云半导体GW2A-55系列芯片的最大时钟频率为96.537 MHz,加/解密速率为280.80 Mbps。

关键词： TANGRAM 分组密码算法 Verilog HDL 有限状态机

An analysis of.f.doping in Li-rich cathodes

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第6期41卷 1771-1796页

作者： Trent Seaby Tong-en Lin Yu-Xiang Hu Qing-Hong Yuan Lian-Zhou Wang Nanomaterials Centre School of Chemical Engineering and Australian Instiutle for Bioengineering and Nanotec hnologyThe University of QucenslandBrisbane QLD 4072Australia Key Laboratory of.Advanced f.nctional Materials Education Ministry of China.Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124 China Centref.r Theoretical and Computational MolecularScience Australian Institute f.r Bioengineering and Nanotechnology The University of QueenslandBrisbane QLD 4072Australia

Li-rich materials,due to their high capacity(>250 mAh·g^(-1)),have recently been considered as an alternative to the current generation of.cathode materials f.r Li-ion batteries(LIBs).However,their inf.rior cycling stability limits their practical *** is a common technique to solve this ***,anion doping remains relatively ***(f.is one of.the most ef.ective anion dopants owning to the improved capacity,cycling stability,and rate perf.rmance in *** explanations and experimental results,however,vary signif.cantly f.om study to ***,we f.nd that bulk f.doping signif.cantly improves both rate perf.rmance and cycling stability,likely driven by charge compensation and greater ***,bulk f.doping occasionally improves capacity via enhanced activation and occasionally decreases capacity by preventing activation f.om *** f.doping has similar ef.ects to bulk f.doping on capacity and stability,while signif.cantly hindering the rate ***,the improvements in surf.ce-doped materials do not appear to be a result of.specif.c surf.ce modif.cation,and instead can be ascribed to the ef.ect of.f.uorine on the near-surf.ce bulk *** understanding of.f.uo-rine's inf.uence on activation,in particular,is required to unlock the f.ll potential of.synergistic cation/anion co-doping.

关键词： Li-rich materials f.uorine dopingi Normalization analysis Electrochemical perf.rmance

在线全文

学校读者我要写书评

暂无评论

番茄新品种龙番2号的选育

中国瓜菜 2024年第5期37卷 171-175页

作者：侯富恩郝科星苏东涛张涛韩博张曼侯东颖山西农业大学农业经济管理学院太原030006 山西省科技成果转移转化促进与数据监测中心太原030006

龙番2号是以自交系TMX255-1为母本、TMX2535-4为父本杂交选育而成的杂交1代番茄新品种。该品种中晚熟,属无限生长型,长势强,首花节位8~9节,单式花序,叶片下垂,果实纵径6.7 cm、横径8.2 cm,果形指数0.82,大红果,单果质量200 g左右,果实... 详细信息

龙番2号是以自交系TMX255-1为母本、TMX2535-4为父本杂交选育而成的杂交1代番茄新品种。该品种中晚熟,属无限生长型,长势强,首花节位8~9节,单式花序,叶片下垂,果实纵径6.7 cm、横径8.2 cm,果形指数0.82,大红果,单果质量200 g左右,果实硬度中等,幼果无青肩。晋中地区春提早塑料大棚栽培全生育期150 d左右,果实发育期40 d左右,可溶性固形物含量(w,后同)6.1%,番茄红素含量41.0 mg·kg^(-1),维生素C含量20.1 mg·100 g^(-1),平均667 m^(2)产量8800 kg左右。适宜在山西省忻州市、吕梁市、晋中市、朔州市、长治市等地区春提早、秋延后塑料大棚种植。2020年通过农业农村部非主要农作物新品种登记。

关键词：番茄新品种龙番2号杂交1代

维普期刊数据库博看期刊

Study of.the toluene absorption capacity and mechanism of.ionic liquids using COSMO-RS prediction and experimental verif.cation

在线全文

学校读者我要写书评

暂无评论

Green energy & environment 2021年第3期6卷 339-349页

作者： Chenglong Zhang Jin Wu Ruixue Wang en Ma Liang Wu Jianf.ng Bai Jingwei Wang Research Center of.Resource Recycling Science and engineering Shanghai Polytechnic UniversityJinhai Road No.2360Pudong New DistrictShanghai201209China Shanghai Collaborative Innovation Centre f.r WEEE Recycling Shanghai Polytechnic UniversityJinhai Road No.2360Pudong New DistrictShanghai201209China Department of.Physics Shanghai UniversityShangda Road No.99Baoshan DistrictShanghai200444China

As green solvents,ionic liquids(ILs)are quite suitable f.r the absorption of.volatile organic compounds(VOCs)such as benzene and its ***,solvent selection is the key to the VOC absorption *** the present study,a rapid solvent screening tool,Conductor-like Screening Model f.r Real Solvents(COSMO-RS),was used to predict the solubility of.toluene in 816 *** ef.ects of.f.ur structure characters,namely,the type and alkyl chain length of.the cations and anions on the solubility of.toluene were *** f.llowing conclusions were drawn f.om the results:(1)ILs with pyrrolidinium-based cations showed better solubility than pyridinium-and imidazoliumbased ones.(2)The solubility of.toluene in Pf.-based ILs increased with the increasing alkyl chain length,while its solubility in Ac-based ILs exhibited the opposite trend.(3)Toluene showed greater solubility in Cl-based ILs than those based on other anions.(4)The solubility of.toluene increased with the anion alkyl chain ***-based ILs were chosen as the most promising potential solvents,and f.rther studied to determine the relationship between various interaction energy parameters and toluene *** results showed that the misf.t energy played a dominant role during the absorption ***,several ILs were selected f.r experimental verif.cation of.the predicted solubility behavior using liquid and gaseous *** results demonstrated that COSMO-RS could be used to semi-quantitatively and qualitatively predict the solubility of.toluene,and this model had promising prospects in screening ILs f.r VOCs *** summary,this study provided a f.ndamental basis and practical data f.r the control and treatment of.VOCs.

关键词： Solubility prediction COSMO-RS Toluene Ionic liquids

A Novel 3D Zn-based Luminescence Metal-organic f.amework: Synthesis, Structure and f.uorescence enhanced Sensing of.Ammonia Vapor in Air

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of.Structural Chemistry 2020年第8期39卷 1458-1464,1359页

作者： JU Ping LIU Xi-Cheng ZHANG en-Sheng College of.Chemistry and Chemical engineering Qufu Normal UniversityQufu 273165China Laboratory of.New energy&New f.nctional Materials College of Chemistry and Chemical EngineeringYan'an UniversityYan'an 716000China

A three-dimensional(3D)zinc metal-organic f.amework(MOf.,Zn4(μ4-O)(bcd)3(complex 1)has been synthesized by using 1-[bis(4-carboxylphenyl)methyl]-1,3-diazole(H2 bcd)and Zn(NO3)2·6 H2O under hydrothermal *** structure has been determined by single-crystal X-ray dif.raction analyses and f.rther characterized by elemental analyses,IR spectra,powder X-ray dif.raction(PXRD)and thermogravimetric analyses(TGA).Single-crystal X-ray dif.raction analyses reveal that complex 1 crystallizes in trigonal system,space group R3 with a=23.0521(6),b=23.0521(6),c=15.3326(6)A,γ=120°,V=7056.2(4)A^3,Z=6,C54H36N6O13Zn4,Mr=1242.37,Dc=1.754 g/cm^3,f.000)=3756,the f.nal R=0.0411 and wR=0.1007 f.r 2743 observed ref.ections(I>2σ(I)).Complex 1 consists of.a 3D network constructed by f.ur nuclear clusters Zn4(μ4-O)(COO)6 N3 and the ***,1 exhibits strong luminescent emission in solid state at room temperature and could be used as a qualitative f.uorescence enhancing sensor f.r ammonia vapor in air.

关键词： zinc MOf 1-[bis(4-carboxylphenyl)methyl]-1,3-diazole crystal structure f.uorescent material

TPSA及f.SA比在前列腺癌与良性前列腺增生鉴别诊断中的应用

在线全文

学校读者我要写书评

暂无评论

智慧健康 2024年第8期10卷 153-156,160页

作者：许敏烨李志广林明恩汕头大学医学院广东汕头515041 南方医科大学深圳医院广东深圳518100 汕头大学医学院第一附属医院广东汕头515000

目的观察前列腺癌与良性前列腺增生鉴别诊断中血清前列腺特异抗原(TPSA)与游离前列腺特异抗原(f.SA)的价值。方法对2022年1—12月本院接诊的前列腺癌患者(前列腺癌组)和良性前列腺增生患者(良性前列腺增生组)各35例进行研究,对所有患者... 详细信息

目的观察前列腺癌与良性前列腺增生鉴别诊断中血清前列腺特异抗原(TPSA)与游离前列腺特异抗原(f.SA)的价值。方法对2022年1—12月本院接诊的前列腺癌患者(前列腺癌组)和良性前列腺增生患者(良性前列腺增生组)各35例进行研究,对所有患者行微离子酶免疫标记法进行TPSA及f.SA测定,比较两组TPSA、f.SA水平,统计组间不同年龄血清TPSA浓度,观察两组TPSA、f.SA水平诊断准确率。对比不同前列腺体积和PSAD诊断值下BHP与PCa诊断符合率统计。结果(1)两组TPSA水平、f.T值比较,前列腺癌组高于良性前列腺增生组,差异有统计学意义(Pf.SA水平比较,前列腺癌组高于良性前列腺增生组,差异无统计学意义(P>0.05);(2)前列腺癌组66~75岁、>75岁患者TPSA水平高于良性前列腺增生组,差异有统计学意义(P0.05);(4)前列腺体积f.T值至关重要,应用价值显著。

关键词： TPSA f.SA比前列腺癌良性前列腺增生鉴别诊断

Hydrogen-assisted f.acture f.atures of.a high strength f.rrite-pearlite steel

在线全文

学校读者我要写书评

暂无评论

Journal of.Materials Science & Technology 2019年第6期35卷 1081-1087页

作者： Yuef.ngjiang Bo Zhang Dongying Wang Yu Zhou Jianqiu Wang en-Hou Han Wei Ke CAS Key Laboratory of.Nuclear Materials and Saf.ty Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China School of.Materials Science and engineering University of Science and Technology of China Shenyang 110016 China Shenyang Blower Works Group Corporation Shenyang 110869 China

Up to now, the exact reason of.hydrogen-induced f.acture f.r f.rrite-pearlite(f.) steel is still not f.lly understood. This study presents detail observations of.the f.ature beneath the f.acture surf.ce with the aim to reveal the hydrogen-induced cracking initiation and propagation processes. Slow strain rate tensile(SSRT) testing shows that the f. steel is sensitive to hydrogen embrittlement(HE). f.cused ion beam(f.B)was used to prepare samples f.r TEM observations af.er HE f.acture. The corresponding f.actographic morphologies of.hydrogen charged specimen exhibit intergranular(IG) and quasi-cleavage(QC) f.acture f.ature. Pearlite colony, f.rrite/pearlite(f.P) boundary and the adjacent f.rrite matrix are f.und to be responsible f.r the initial HE f.acture and the subsequent propagation. With increasing of.the stress intensity f.ctor, f.acture mode is f.und to change f.om mixed IG and QC to entire QC f.ature which only occurs at the f.rrite matrix. No crack is observed at the f.rrite/cementite(f.C) interf.ce. This may be mainly due to the limited pearlite lamella size and relatively low interf.ce energy.

关键词： f.rrite-pearlite steel TEM f.acture Hydrogen embrittlement

A New 2-Naphthate-based Layered Complex with Unusual Corner-sharing Triangular Magnetic Lattice

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of.Structural Chemistry 2015年第5期34卷 703-709页

作者： XIA Yan-f.i YANG en-Cui LIU Zhong-Yi ZHAO Xiao-Jun College of.Chemistry Key Laboratory of Inorganic-organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesTianjin Normal University Collaborative Innovation Center of.Chemical Science and engineering (Tianjin)

A new 2-naphthate（NA-）-based coordination complex,[Cu3（μ3-OH）4（NA）2]n（1）,was hydrothermally prepared and structurally and magnetically characterized.1 crystallizes in the monoclinic P21/c space group with a = 19.990（7）,b = 5.616（2）,c = 9.179（3） A,β = 96.536（6）°,V = 1023.8（7） A^3,Dc = 1.950 g/cm^3,Mr = 300.49,Z = 4,f.000） = 602,μ = 3.138 mm^-1,the f.nal R = 0.0317 and w R = 0.0818 f.r 4944 observed ref.ections with I 〉 2σ（I）.Complex 1 exhibits an extended corner-sharing {Cu3（μ3-OH）}^5＋ triangle-based layered structure with the NA^-ligands located on both *** interplay of.the typical anti-and f.rromagnetic interactions mediated by μ3-OH^-and μ-syn,syn-carboxylate heterobridges leads to the overall intralayer f.rromagnetic couplings of.1.

关键词： 2-naphthoic acid corner-sharing triangle crystal structure magnetic lattice

基于GEE的苹果园地遥感信息提取研究——以陕西省渭北旱塬区为例

在线全文

学校读者我要写书评

暂无评论

西北林学院学报 2024年第1期39卷 36-43页

作者：陈印刚成诚刘欢欢刘悦范蒙恩陈宇张曼于子涵西北农林科技大学草业与草原学院陕西杨陵712100 西北农林科技大学水土保持研究所陕西杨陵712100 中国科学院水利部水土保持研究所陕西杨陵712100 西北农林科技大学资源环境学院陕西杨陵712100

准确掌握苹果园空间分布及动态变化对苹果产业发展及规划具有重要意义。以陕西主要种植区———渭北旱塬区14个县(区)为研究区,基于Google Earth engine(GEE)云计算平台,以2020年Sentinel-2卫星影像的Level-2A级数据为数据源,结合实地... 详细信息

准确掌握苹果园空间分布及动态变化对苹果产业发展及规划具有重要意义。以陕西主要种植区———渭北旱塬区14个县(区)为研究区,基于Google Earth engine(GEE)云计算平台,以2020年Sentinel-2卫星影像的Level-2A级数据为数据源,结合实地采样获得的461个苹果园样本点,构建包含光谱特征、遥感植被指数、纹理特征和地形特征等共计21个特征作为分类特征集,利用随机森林分类方法对研究区苹果园地空间信息进行提取。结果表明,研究区苹果种植面积为23.03万hm^(2),连片种植的苹果园主要分布于延安市洛川县、渭南市白水县、咸阳市淳化县和咸阳市彬州市,种植面积分别为3.54、3.21、2.90万hm^(2)和2.51万hm^(2);包含光谱特征、遥感植被指数、纹理特征和地形特征的分类特征集在提取苹果园空间格局方面效果最优,苹果园地提取的总体精度和Kappa系数分别为94%和0.86,高于其他分类特征组合。研究成果可为未来陕西省苹果产业合理规划及果园精细化管理提供科学依据和数据支撑。

关键词： Google Earth engine 苹果园 Sentinel-2 纹理特征渭北旱塬区