42 research outputs found
Design and Implementation of The Dance Classroom Teaching System Based on Component
构件是面向软件体系架构的可复用软件模块。构件(Component)是可复用的软件组成成份,可被用来构造其他软件。同时,构件是系统中实际存在的可更换部分,它实现特定的功能,符合一套接口标准并实现一组接口。构件代表系统中的一部分物理实施,包括软件代码(源代码、二进制代码或可执行代码)或其等价物(如脚本或命令文件) 基于构件的软件开发(Component-BasedSoftwareDevelopmentCBSD)方法是继面向对象的设计方法之后,正在盛行的新的软件开发技术。构件作为对外提供特定接口的软件功能模块单元,能够支持大粒度的软件复用,同时使软件的开发变成了对各种构件的组合使用,并将软件的维护...Component is a reusable software modules for software architecture. Component is a reusable software components, can be used to make other software. At the same time, component is the actual system in the presence of replaceable parts, it performs a specific function, to conform to a set of interface standards and implement a set of interfaces. Members represent part of the system physical impleme...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201123040
Syntheses of a Series of Lactato Cobalt Complexes and Their Interaction with Bovine Serum Albumin
合成和表征了系列乳酸钴配合物,测定二水二乳酸钴配合物的结构,配合物中乳酸的羟基和羧基配位键平均键长分别为0.206 0(2)nM和0.206 8(2)nM。当[CO(HlACT)2(H2O)2](2)或[CO(HlACT)2(PHEn)].2H2O(4)配合物与牛血清白蛋白(bSA=bOVInE SEruMAlbuMIn)相互作用后,红外光谱显示乳酸或邻菲咯啉的特征吸收消失,钴离子与bSA出现新的配位,初步推定乳酸或邻菲咯啉配体被bSA中的强配体所取代。A series of lactate cobalt complexes are synthesized and characterized by spectral and structural analyses,including [Co(Hlact)2(H2O)2]·H2O(1),[Co(Hlact)2(H2O)2](2),[Co(Hlact)(phen)(H2O)2]Cl(3) and [Co(Hlact)2(phen)]·2H2O(4)(Lactic acid=H2lact;1,10-phenanthroline=phen).Their interactions with Bovine Serum Albumin(BSA) are investigated with infra-red spectra.国家自然科学基金(No.20805041);国家重点基础研究发展计划(No.2010CB126504)资助项
Synthesis and Characterization of [Ni(Hlact)_2(phen)]·2H_2O and Its Interaction with BSA Studied by Fluorescence Spectroscopy
利用溶液法合成了配合物[nI(HlACT)2(PHEn)]·2H2O(1),并对该配合物进行了元素分析、红外光谱和X-射线单晶衍射表征。通过荧光光谱法研究了不同温度下配合物1与牛血清白蛋白相互作用时的荧光强度的变化,计算了在不同温度下,配合物1与牛血清白蛋白(bSA)的结合常数、结合位点数以及热力学函数,并进一步讨论了配合物1与bSA相互作用时的作用力类型和两者之间的距离。结果表明,配合物1对牛血清白蛋白的荧光猝灭为静态猝灭过程,它与牛血清白蛋白的相互作用有一个位点,结合常数的平均值5.06x105l·MOl-1,作用距离为2.35 nM,相互作用力表现为氢键和范德华力。The compound [Ni(Hlact)2(phen)]·2H2O is synthesized in the solution and fully characterized by elemental analysis,IR and X-ray structural analyses.The interaction of Bovine Serum Albumin(BSA) and [Ni(Hlact)2(phen)]·2H2O at different temperatures are investigated with fluorescence spectra.The binding constant,binding sites and thermodynamic functions are calculated at different temperatures.The binding force and distance are discussed for BSA with complex 1.In the result,the model of fluorescence quenching is considered as static quenching process based on Stern-Volmer equation.The binding constant and binding sites are calculated for BSA and [Ni(Hlact)2(phen)]·2H2O as 5.06 ×105L·mol-1 and 2.35nm respectively.Parameters of thermodynamic functions are calculated and the interaction is determined as hydrogen bonding and van der Waal interactions between BSA and complex.国家自然科学基金(No.21073150)资助项
聚乙烯醇超选择性栓塞子宫动脉治疗子宫肌瘤
【目的】探讨聚乙烯醇超选择性栓塞子宫动脉治疗子宫肌瘤的临床疗效。【方法】收集22 例子宫
动脉栓塞术治疗肌瘤的患者, 观察临床表现。【结果】① 患者子宫体积均数、肌瘤体积均数在栓塞术前后变化
有统计学的差异( P0.05) 。③ 患者月经
量在栓塞术前后变化有统计学差异( P< 0.05) 。【结论】① 本疗法能有效地缩小子宫和肌瘤的体积; 改善月经
过多等临床症状。②本疗法对近期卵巢体积影响不大。③ 本疗法近期疗效良好, 远期效果有待进一步的研究。
④ 本疗法有一定的副作用和并发症, 应加以重视
柠檬酸镍(Ⅱ)配合物的合成、光谱和晶体结构
在弱酸性介质中,氯化镍和柠檬酸铵反应可得到镍水合离子与二聚柠檬酸镍配离子的加合配合物(NH4)[Ni(H2O)6][Ni(Hcit)(H2O)2]4·10H2O1。该配合物的晶体属三斜晶系,空间群为P1,晶胞参数:a=9.7273(9),b=12.034(2),c=13.348(2),α=63.54(2),β=88.45(1),γ=86.28(1)°,V=1395.9(3)3,Z=1,配合物的阳离子为两个铵离子和一个六水合镍离子,阴离子由两个二聚柠檬酸镍[Ni(Hcit)(H2O)2]2-2组成。在不对称的配阴离子中,两个柠檬酸分别以羟基、α-羧基和一个β-羧基同第一个镍配位,剩下的β-羧基作为桥基同另一个镍配位形成二聚体
微生物还原制备高分散度负载型钯催化剂
用地衣形芽孢杆菌 ( Bacillus licheniformis) R0 8菌体还原、制备高分散度负载型钯催化剂。透射电镜观察表明 ,R0 8菌体能够吸附还原 Pd2 +成 Pd0 颗粒。IR谱分析发现 ,细胞壁上的 - COO- 和 - HPO42 - 基团可能与菌体吸附 Pd2 +的过程有关。XPS测定结果表明 ,在载体 γ- Al2 O3上的 Pd2 +离子被 R0 8菌体还原成 Pd0。所形成的 Pd0 γ- Al2 O3催化剂经加热处理后 ,载体 γ- Al2 O3上的 Pd0 颗粒高度分散 ,其平均粒径为 5nm。该催化剂能够高效地催化一氧化碳的氧化反应
NUMERICAL ANALYSIS OF LOAD-MOMENT INTERACTION DIAGRAM FOR HIGH STRENGTH CONCRETE COLUMN REINFORCED WITH CONCRETE FILLED STEEL TUBE
介绍了以圆钢管为钢骨的劲性高强混凝土柱的抗震性能研究的试验概况,在此基础上采用条带有限元法进行了弯矩-轴力相关曲线的数值分析,计算结果与试验结果大致吻合,可以用于确定该类柱在偏压状态下的极限承载力。The general situation of earthquake-resistant behavior experiments of high concrete columns reinforced with concrete filled steel tube is presented.Based on the experimental results,the numerical analysis of load-moment interaction diagram for the columns is completed using strip finite element analysis method.The calculation results are in basic agreement with those of the experimental values,so the numerical analysis method can be used to determine the ultimate bearing capacity of the columns under eccentric compression
滤光片型近红外仪器模型传递的研究
模型传递问题是近红外光谱分析技术中解决数据通用性的关键问题。文章以玉米籽粒近红外光谱
图(检测其中水分含量) 为例, 考察了模型传递的问题。使用斜率截距算法, 直接校正法和目标因子分析等算
法, 在5 台滤光片型近红外仪器上实现了模型传递, 并比较了各种方法的模型传递效果。研究表明, 直接校
正法的模型传递效果最好, 4 台从仪器的平均传递差异度为7101 %。文章还研究了标准样品数量对模型传
递效果的影响。作为转换集的标准样品数目越多, 模型传递效果越好, 一般有20 个标准样品就能达到稳定
的效果。当转换集小于20 时, 直接校正法的传递效果急剧下降, 而标准样品数量对斜率截距法和目标因子
分析法的影响不明显。国家“863”计划项目(2006AA01Z129) 资
Therapeutic effects comparison between platelet-rich plasma and sodium hyaluronate intra-articular injection in treatment of knee osteoarthritis
目的关节腔内注射自体富血小板血浆(PRP)与透明质酸钠(SH),观察并比较其疗效。方法于2012年2月至12月,漳州市解放军第175医院骨科收治的81例Kellgren-Lawrence(KL)分级标准为Ⅱ、Ⅲ级膝关节骨关节炎的患者,年龄48~60岁,平均(52.6±3.6)岁;男性27例,女性53例;左膝38例,右膝43例。K-L分级标准,Ⅱ级47例,Ⅲ级34例,按就诊顺序序贯随机平行分为SH组(40例)和PRP组(41例),分别采用SH和PRP关节腔内注射进行治疗。治疗前和治疗后3、6、9、12个月对患者进行随访并进行美国西部Ontario与Mc Master大学骨关节炎指数(WOMAC)评分评估,两组间各时间点WOMAC评分比较采用t检验,两组内各时间点WOMAC评分比较采用重复测量方差分析;分别于治疗前和治疗后12个月进行膝关节磁共振检查,评价关节腔内积液的吸收情况。结果治疗前及治疗后3个月PRP组WOMAC评分[(48.42±4.95)分,(25.38±5.12)分]和SH组[(47.17±5.12)分,(25.17±5.09)分]比较,t值分别为-0.625和0.413,差异无统计学意义(P均〉0.05);治疗后6、9、12个月PRP组WOMAC评分[(21.44±4.73)分,(20.54±4.46)分,(16.53±7.35)分]和SH组[(25.87±5.16)分,(27.22±4.21)分,(29.63±8.21)分]比较,PRP组低于SH组,t值分别为-2.765、-3.447和-4.657,差异具有统计学意义(P均〈0.05),治疗后12个月复查磁共振,可见PRP组的关节积液吸收例数高于SH组,差异有统计学意义(P〈0.05)。结论膝关节腔内注射自体PRP,临床效果优于透明质酸钠,中长期疗效好。Objective To compare the efficacy of platelet rich plasma (PRP) and sodium hyaluronate (SH) intra-articular injection in the patients with knee osteoarthritis of grade Ⅱand Ⅲ. Methods A total of 81 patients with knee osteoarthritis of grade Ⅱ and Ⅲ ( Kellgren-Lawrence standard) were randomly assigned to the PRP and SH group. All 81 patients were treated in the 175th hospital of PLA, Zhangzhon, with the average age of (52.6 ± 3.6) years. There were 27 males and 53 females. Forty cases in SH group and 41 cases in PRP group had got the complete follow-up. Both the two groups adopted 4 ml of 5% lidocaine for intra-articular injection. All the patients were prospectively evaluated before the treatment and at the 34 , 6th , 9th and 12th month after the treatment by the Western Ontario and McMaster Universities (WOMAC) osteoarthritis index. The swelling subsiding knee was observed. Between the two groups WOMAC scores were compared using t test at each time point, within the groups the scores were compared by repeated measures analysis of variance. The absorption of accumulated fluid in the joint cavity was observed and compared by MRI before and 12 months after the treatment. Results No serious adverse event was detected in the two groups. According to the follow-up evaluations, both the groups presented clinical improvements. The comparison between the two groups showed no statistically significant difference before therapy and three months after the treatment ( t =- 0. 625, 0. 413, P 〉 0. 05 ). Six months, nine months and 12 months after the treatment, WOMAC score in the PRP group[ (21.44 ±4. 73), (20. 54 ± 4. 46) ,(16. 53 ± 7. 35 ) pointsl were lower than the SH group[(25.87 ±5.16), (27.22 ±4.21), (29. 63 ± 8.21 ) points] ; the difference was statistically signifieant( t = - 2. 765, - 3. 447, - 4. 657, P 〈 0. 05 ). Conclusion PRP intra-artieular injection in the treatment of knee osteoarthritis of gradeⅡ and Ⅲ may be more suitable compared to南京军区医学科技创新重点课题项目(15ZD027
Constraint of a ruthenium-carbon triple bond to a five-membered ring
含过渡金属碳三键(M≡C)的金属卡拜化合物是许多有机反应的催化剂或关键中间体。对其合成及性质的研究是金属有机化学的热点之一。由于卡拜碳的sp杂化方式,大部分金属卡拜化合物均为链状结构(卡拜碳键角理想值为180 °),环内金属卡拜化合物因存在很大的环张力而难于合成。夏海平教授课题组发展了由链状多炔(称之为碳龙)构筑碳龙配合物的高效方法(Nature Communications, 2017, 8, 1912),实现了锇杂戊搭炔/烯及其衍生物的一锅法合成。现在,他们把该方法进一步拓展到了第二过渡系金属钌,通过碳龙与市售的RuCl2(PPh3)3反应一锅合成了钌杂戊搭炔I。本研究是碳龙化学的进一步延伸和发展,首次把碳龙化学的金属中心由锇拓展到了其它金属,展示了碳龙化学广阔的发展空间。该研究工作在夏海平教授指导下完成,能源材料化学协同创新中心(iChEM)博士后卓庆德和张弘副教授为共同第一作者。iChEM博士后周小茜、博士生陈志昕、林剑锋、卓凯玥、硕士康慧君、林鑫磊参与了部分实验工作。博士生华煜晖负责理论计算。【Abstract】The incorporation of a metal-carbon triple bond into a ring system is challenging because of the linear nature of triple bonds. To date, the synthesis of these complexes has been limited to those containing third-row transition metal centers, namely, osmium and rhenium. We report the synthesis and full characterization of the first cyclic metal carbyne complex with a second-row transition metal center, ruthenapentalyne. It shows a bond angle of 130.2(3)° around the sp-hybridized carbyne carbon, which represents the recorded smallest angle of second-row transition metal carbyne complexes, as it deviates nearly 50° from the original angle (180°). Density functional theory calculations suggest that the inherent aromatic nature of these metallacycles with bent Ru≡C–C moieties enhances their stability. Reactivity studies showed striking observations, such as ambiphilic reactivity, a metal-carbon triple bond shift, and a [2 + 2] cycloaddition reaction with alkyne and cascade cyclization reactions with ambident nucleophiles.This research was supported by the National Key R&D Program of China (2017YFA0204902) and the National Natural Science Foundation of China (nos. 21490573,21332002, and 21561162001).
研究工作得到国家自然科学基金项目(21490573、21332002 和21561162001)和国家重点研发计划(2017YFA0204902)的资助
