Design and Implementation of Warehouse Management System Based on SSH

企业的仓库管理往往是相当复杂和繁琐的。由于企业现实所掌握的物资种类众多，在订货、管理、发放渠道等方面有差异，各个企业之间的管理体制也不尽相同，各类统计计划报表繁多，也因此管理的形式也不尽相同。因此仓库管理必须实现计算机化，而且必须根据企业的具体情况制定相应的方案，只有这样一个企业的管理水平才会提高，相应的工作效率也会提高。 本文从国内外中小型企业的仓库管理系统的研究背景和意义出发，针对我国现行中小型企业中的仓库管理系统的不足，提出基于SSH架构的中小型企业仓库管理系统设计方案。B/S（Browser/Server）结构即浏览器和服务器结构，用户工作界面是通过浏览器来实现，极少部分事务逻辑在前...The warehouse management of enterprise tends to be rather complicated and tedious. Because enterprises have kinds of material in reality, they are different in ordering, management, distribution channel and so on.What's more, each enterprise has different management system, statistical plan report and thus management form.Hence, warehouse management must be computerized and it is essential to deve...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201123023

打造社会资本:自我表达价值观时代的藏族自主创业者

本文聚焦于目前研究不足的少数民族自主创业者。基于2018年9月—2019年1月期间对居于成都和西宁的15位自主创业者的访谈数据,本文以自我表达价值观作为时代背景(创业者的动机来源),运用社会...教育部人文社会科学研究规划项目“当代中国的自我关注与公民性:海峡两岸的比较研究”(编号:15YJA840021)的阶段性成

Theoretical Study on Intramolecular Proton Transfer Reaction in 2-(2-Mercaptophenyl)benzoxazole

在b3lyP/6-31g(d,P)水平上研究了2-(2-巯苯基)苯并噁唑气态中五种异构体(E1,E2,E3,E4和k)在气态中的稳定性及其在基态下的质子转移,同时结合极化连续介质模型(PCM)研究了水、二甲亚砜、乙腈、乙醇、苯胺和环己烷等对2-(2-巯苯基)苯并噁唑溶剂化作用的影响.研究结果表明,醇式异构体E1为2-(2-巯苯基)苯并噁唑的优势构型;在E1向k(酮式异构体)转变过程中,存在一个较小的能垒;当考虑零点振动能(zPVE)后,逆向能垒消失.在溶液中,随着溶剂极性的增强,醇式异构体E1与k之间的反应平衡向k方向移动,在非极性溶剂环己烷中,E1为优势构型,而在强极性水溶液中,k为优势构型。The tautomers(E1,E2,E3,E4,and K) and the ground state intramolecular proton transfer reaction of 2-(2-mercaptophenyl)benzoxazole were studied at the B3LYP/6-31G(d,p) level.The effect of solvent(water,dimethylsulfoxide,acetonitrile,ethanol,aniline,and cyclohexane) was studied at the B3LYP/6-31G(d,p) level,using the polarizable continuum model.The results of density functional calculations indicate that the enol form E1 is the most stable tautomer at the ground state.In these solvents there is an equilibrium for 2-(2-mercaptophenyl)benzoxazole in the ground state between E1 and K,and the equilibrium shifts toward the tautomer K as the polarity of the solvent increases.E1 is the preferential conformation in cyclohexane,but K is the more stable tautomer in water.国家自然科学基金(Nos.20772027;20803020);973子课题(No.2003CB716005);中国博士后科学基金(No.20070410805)资助项

Preparations and Electrochemical Properties of BC/CoNi2S4@PPy Flexible Composites for Supercapacitors

本文采用溶剂热、原位聚合和真空抽滤相结合的方法制备了用于超级电容器的细菌纤维素/镍钴硫化物/聚吡咯(BC/CoNi2S4@PPy)柔性电极材料,通过X射线衍射、场发射扫描电镜、红外光谱、氮气吸脱附、拉伸强度和接触角表征了材料的形貌结构、组成、机械性能和亲水性,并采用循环伏安法和恒电流充放电测试了复合材料的电化学性能。结果表明,表面含氧官能团丰富的BC纤维网络结构对氧化还原活性物质CoNi2S4的生长和导电聚合物PPy的分布具有引导作用,CoNi2S4均匀分布在BC网络中,且PPy均匀包覆在BC纤维和CoNi2S4纳米球表面构成具有丰富孔隙结构的三维导电网络,使得该复合材料具有较好的机械性(抗拉强度达28.0±0.1 MPa)、亲水性(对6 mol·L-1 KOH的瞬间接触角为43.6°)及良好的导电性。该电极材料在1 A·g-1下比电容高达2670 F·g-1,充放电循环10000次后比电容的保持率为82.73%,且经1000次反复弯曲后电化学性能保持不变。此外,将其与活性炭组成的非对称超级电容器,在1 A·g-1下比电容为1428 F·g-1,最高能量密度和功率密度分别达49.8 Wh·kg-1和741.8 W·kg-1。Flexible supercapacitor is one of the most promising energy storage devices for portable and wearable electronic products due to its advantages of high power density, fast charging and long cycle life. Therefore, self-supporting flexible electrode materials with high performance have attained more and more attention both in academia and in industry recently. In this work, using bacterial cellulose (BC) as a flexible substrate, the bacterial cellulose/nickel-cobalt sulfide@polypyrrole (BC/CoNi2S4@PPy) flexible composites with three-dimensional porous network and good conductivity were prepared by a combined solvothermal-in-situ polymerization-vacuum filtration method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectrometry, N2 physisorption, tensile strength and contact angle measurements. Their electrochemical performances were tested by cyclic voltammetry, galvanostatic charge/discharge testing and electrochemical impedance spectroscopy. The results show that the three-dimensional porous network of BC fibers with rich oxygen-containing surface groups play a guiding role in the growth of the redox active material CoNi2S4 and the distribution of conductive polymer PPy, resulting in uniformly distributed CoNi2S4 nanospheres in the network of BC fibers, both coated evenly with a layer of conductive PPy. The resulting BC/CoNi2S4@PPy composites, a three-dimensional conductive network with high porosity, displayed good mechanical property (tensile strength up to 28.0±0.1 MPa), hydrophilicity (the instantaneous contact angle in 6 mol·L-1 KOH is 43.6°), as well as excellent electrochemical performance. The specific capacitance of the flexible BC/CoNi2S4@PPy was 2670 F·g-1 at 1 A·g-1 in a three-electrode system, and retained 82.7% after 10000 charge and discharge cycles. In addition, the electrochemical performance remained unchanged after 1000 times of repeated bending. In an asymmetric supercapacitor composed of BC/CoNi2S4@PPy and activated carbon, the area specific capacitance was 1428 F·g-1 at 1 A·g-1. The asymmetric supercapacitor achieved the maximum energy density of 49.8 Wh·kg-1 and power density of 741.8 W·kg-1.国家重点基础研究发展计划项目(2014CB239702);国家自然科学基金项目(21676082)通讯作者:周静红E-mail:[email protected]:Jing-HongZhouE-mail:[email protected]华东理工大学化工学院,上海 200237School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, Chin

土样扰动影响的评价及其先期固结压力的确定

本文在引进扰动特征量的基础上,建议一种评价受扰动土样的性质的分析方法。根据土样扰动对土的e-logp压缩曲线的影响,提出了一个能描述受到不同程度扰动土的压缩曲线的数学模型,并据此建立了利用扰动和重塑样压缩试验的结果来估算“不扰动土”(即理想土样)先期固结压力p_c的方法。通过四个场地土的试验结果验证,它对于大多数粘性土是适用的,估算的p_c值及修正后的压缩曲线可以为分析其它土工问题提供有用的数据

Measurements of atmospheric deposition fluxes of ~7Be,~(210)Pb and ~(210)Po

运用本实验室建立的大气沉降中7Be,210Pb的γ谱分析方法和210Po的α谱分析方法,测定了青岛大气沉降通量。结果表明,青岛市2002年4~11月大气沉降的7Be和210Pb通量平均为1.67和0.32 Bq/(m2.d);2004年5~9月7Be,210Pb和210Po通量平均值为2.15,0.51和0.083 Bq/(m2.d)。 【英文摘要】 The measurement methods of atmospheric deposition fluxes of ~7Be,~(210)Pb and ~(210)Po have been developed,~7Be and ~(210)Pb are measured by γ spectroscopy,and ~(210)Po is determined using α spectroscopy.The formulas from the activities of measuring time to deposition spectroscopy have been deduced.The formulas from the activities of measuring time to deposition fluxes have been deduced,too.The atmospheric deposition fluxes of ~7Be,~(210)Pb and ~(210)Po at Qingdao have been studies.The result shows that the...国家自然科学基金重点项目(40036010);; 中国海洋大学海洋生态环境重点实验室开放基金资助项

mRNA疫苗的开发及临床研究进展

随着mRNA稳定性和安全高效的递送系统的研究日渐成熟,近年来,mRNA疫苗在肿瘤个体化疫苗中取得了较大进展,因其生产工艺简单、在细胞内表达抗原、安全性优于DNA疫苗等特点,是一种很有前途的新型疫苗。为了解全球mRNA疫苗的开发与研究现状,在此重点对mRNA疫苗的分子设计、递送系统、临床研究现状进行了分析和综述,为后续mRNA疫苗的开发和研究提供参考依据

废旧锂电池正极活性材料硫酸浸出液萃取纯化

研究了酸性膦类萃取剂P204,P507与协萃剂Lix54,Lix84配方对废旧锂电池正极材料的硫酸浸出液萃取除Al的反应规律.研究表明: P507 + Lix84复合体系萃取分离Al /Mn的效果最佳.以最优配方5% P507 + 5% Lix84 /煤油,在pH为4.0,水油体积相比V_a /V_o为1∶ 1时,Al,Cu,Co,Ni,Mn和Li的单级萃取率分别为89.1%, 80.8%, 3.4%, 2.6%, 3.2%和0.3%.在V_a /V_o为1∶ 4时,经两级(理论级)萃取,母液中Al的质量浓度为0.88 g·L ~(-1),萃取率大于97.7%;负载油相用2.0 mol /L硫酸溶液反萃,在V_a /V_o为10∶ 1时,经两级(理论级)反萃,有机相中Al的质量浓度为0.79 g·L ~(-1),反萃率大于99.0%

~(210)Pb和~(137)Cs法对比研究武汉东湖现代沉积速率

对采自东湖 站和 站的沉积物采用210Pb和137Cs相结合的方法测定沉积速率,210Pb法测出东湖 站和 站的沉积速率为8.73mm/a和6.90mm/a,137Cs测出东湖 站和 站的沉积速率为7.4mm/a和5.8mm/a.分析了两种方法测定结果差异产生的原因,并与以往的研究相对比,探讨东湖沉积速率空间分布的规律性,沉积速率变化与人类活动的关系、沉积速率与扰动的关系

废旧锂电池正极活性材料硫酸浸出液萃取纯化

研究了酸性膦类萃取剂P204,P507与协萃剂Lix54,Lix84配方对废旧锂电池正极材料的硫酸浸出液萃取除Al的反应规律.研究表明: P507 + Lix84复合体系萃取分离Al /Mn的效果最佳.以最优配方5% P507 + 5% Lix84 /煤油,在pH为4.0,水油体积相比V_a /V_o为1∶ 1时,Al,Cu,Co,Ni,Mn和Li的单级萃取率分别为89.1%, 80.8%, 3.4%, 2.6%, 3.2%和0.3%.在V_a /V_o为1∶ 4时,经两级(理论级)萃取,母液中Al的质量浓度为0.88 g·L ~(-1),萃取率大于97.7%;负载油相用2.0 mol /L硫酸溶液反萃,在V_a /V_o为10∶ 1时,经两级(理论级)反萃,有机相中Al的质量浓度为0.79 g·L ~(-1),反萃率大于99.0%