The Technology of Virtual Instrument Based on PC

本文简要介绍了基于PC的虚拟仪器的概念、特点、系统组成、应用和发展趋势厦门大学预研基金资助项目,项目编号:0620·y0700

Virtual function generator based on LabVIEW

传统信号发生器只能产生正弦波、方波、三角波和锯齿波4种基本波形,虚拟波形发生器不仅能产生这些基本波形,还可以输出任意波形且价格低廉,可以满足高校实验室教学的需要。文中详细介绍了基于LabVIEW的虚拟波形发生器的组建方法,重点阐述了虚拟波形发生器的软面板和应用程序的设计。The traditional signal generator device can only output the sine wave, the squarewave, the triangle wave and the saw-tooth wave. The virtual function generator can not only have these basic profiles, but also may output random waves with inexpensive prices, can satisfy the need of university laboratory teaching. This paper thoroughly introduces the method of building virtual function generator based on LabVIEW, and mainly sets forth on the design of soft panel and application.厦门大学创新团体发展计划(IRTXMU200606)资助项

Virtual oscillosope based on LabVIEW

文中详细介绍基于LabVIEW的虚拟示波器的组建方法,重点阐述虚拟示波器的软面板和应用程序设计。Building method of a virtual oscilloscope based on LabVIEW was described in detail in this paper. Soft panel and design of application program of virtual oscilloscope was highlighted.厦门大学创新团体发展计划资助

柴郁地仙方对围绝经期抑郁症模型大鼠行为学及海马BDNF、TrkB蛋白表达的影响

目的观察柴郁地仙方对围绝经期抑郁症(perimenopausal depressive disorder, PDD)模型大鼠行为学及海马脑源性神经营养因子(brain derived neurotrophic factor, BDNF)、酪氨酸激酶B受体(tropomyosin receptor kinase B, TrkB)蛋白表达的影响,探讨其抗围绝经期抑郁症的作用机制。方法 48只3～4月龄雌性SD大鼠随机分为假手术组、模型组、阳性对照组、柴郁地仙方低、中、高剂量组,共6组,每组8只。假手术组行假手术,其余组行卵巢去势术后孤养并予以28天慢性轻度不可预见性应激(chronic unpredictable mild stress, CUMS)建立围绝经期抑郁症模型。CUMS第1天起假手术组、模型组灌服生理盐水,阳性对照组灌服盐酸氟西汀合戊酸雌二醇,中药治疗组灌服柴郁地仙方低、中、高不同浓度的汤药,其浓度分别为:0.38、0.76、1.52 g/mL,每天1次。应激过程中观察大鼠行为学及体重变化,并通过Morris水迷宫实验评价大鼠空间学习和记忆能力,应用免疫印迹法检测大鼠海马BDNF、TrkB蛋白表达情况。结果与假手术组比较,模型组大鼠体重增长缓慢,旷场实验得分及糖水偏好率均明显降低(P0.05)。结论柴郁地仙方可改善PDD模型大鼠行为学、体重水平及水迷宫的空间学习和记忆能力,其作用机制可能是通过提高大鼠海马中BDNF、TrkB蛋白表达量发挥的。福建省计生委中医药科研基金资助项目(No.wzpw201307);;福建省自然科学基金计划项目(No.2017J01147

Simulation Study on Front Impact Safety of Medium Coach

建立半承载式中型客车的正面碰撞有限元模型,采用lS-dynA软件进行仿真分析。结果表明,该车驾驶室变形较大、完整性较差,需对客车前部吸能结构进行优化设计。The finite element model of front impact of medium coach is built,which body is semi-integral type.Using LS-DYNA software,the front impact safety is simulated.The results indicate that the drive cab deformation is bigger and its integrality is worse,so it is necessary to optimize the front absorbing structure components to the coach drive cab.交通部西部交通科技项目(2009318000043);福建省教育厅科技项目(JA11239);厦门理工学院科技项目(JKY10023R);福建省自然科学基本项目(2012J05103

Simple Combustion Production and Characterization of Octahydro[60]fullerene with a Non-IPR C-60 Cage

1. Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 3. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R ChinaFor the first time an easier, operable combustion method is employed for the synthesis of non-IPR fullerene, and an octahydro[60)fullerene with a non-IPA C-60 cage (C-60 isomer C-#1809(60)) produced by combustion is isolated and characterized by MS, UV vis, IR, and NMR spectroscopies in combination with DFT calculations. This finding shows that, in addition to chlorine, hydrogen can be an ample cataloreactant for the production of non-IPR fullerene derivatives under such conditions as arc-burning and diffusion combustion.NSFC 20525103 20673088 20973137 20721001 20423002 21031004 973 projects 2007CB815301 2007CB81530

1978～2008年中国湿地类型变化

分别基于美国陆地卫星(Landsat MSS/TM/ETM+)和中巴资源卫星(CBERS-02B)影像数据,以人工目视解译为主,完成了中国1978～2008年4期(基准年分别为1978,1990,2000和2008年)湿地遥感制图,并进行了大量的室内外验证.在此基础上,对我国湿地现状及近30年来湿地变化进行了初步分析,得到以下主要结论:(ⅰ)截止2008年,中国湿地面积约为324097km2,其中以内陆沼泽(35%)和湖泊湿地(26%)为主.(ⅱ)1978～2008年,中国湿地面积减少了约33%,而人工湿地增加了约122%.过去30年里湿地减少的速度大幅降低,由最初5523km2/a(1978～1990年)降为831km2/a(2000～2008年).(ⅲ)减少的自然湿地(包括滨海湿地和内陆湿地),其类型变化由湿地向非湿地转化的比例逐渐降低.初期(1978～1990年)几乎全部(98%)转换为非湿地;在1990～2000年间减少的自然湿地约有86%转化为非湿地,而在2000～2008年,这一比例下降为77%.(ⅳ)气候变化和农业活动是中国湿地变化的主要驱动因素,湿地变化在中国分为三大不同特征区域,即西部三省/自治区(西藏、新疆和青海)、北部两省/自治区(黑龙江和内蒙古)和其他省市区.其中西部区域尤其是青藏高原,湿地变化的驱动因子以气候增温为主;新疆湿地由于气候增温和农业活动共同作用造成变化不大.北部省/自治区的湿地变化则主要由农业活动引起;而其他省市区的湿地变化几乎完全受控于人类的农业经济活动

Combustion Synthesis and Electrochemical Properties of the Small Hydrofullerene C50H10

通讯作者地址: Xie, SY (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China 电子邮件地址: [email protected]; [email protected] hydrofullerene C50H10 is synthesized by low-pressure benzeneoxygen diffusion combustion. The structure of C50H10 is identified through NMR, mass spectrometry, and IR and Raman spectroscopy as a D5h symmetric closed-cage molecule with five pairs of fused pentagons stabilized by ten hydrogen atoms. UV/Vis and fluorescence spectrometric analyses disclose its optical properties as comparable with those of its chloride cousin (C50Cl10). Cyclic and square-wave voltammograms reveal that the first reduction potential of C50H10 is more negative than that of C50Cl10 as well as C60, with implications for the utilization of C50H10 as a promising electron acceptor for photovoltaic applications.973 projects 2011CB935901 NSFC 21031004 21021061 2077310

盐丰1号对棉花抗盐效果的田间试验报告

通过对26%福多甲种衣剂、盐丰1号抗盐碱制剂以及二者混合对棉花品种新陆早36号拌种处理,试验其抗盐保苗效果和使用方法。结果表明,每公斤棉花种子用盐丰1号4g和26%福多甲种衣剂20g拌种施用后,可提高棉种出苗率、增强棉花幼苗生长势,且该制剂安全性良好,具有应用推广的价值

栅藻藻渣营养成分分析及蛋白提取工艺优化

研究了二形栅藻藻渣的蛋白提取工艺及氨基酸组成,在测定藻渣蛋白等电点的基础上考察了浸提液p H值、液料比、浸提温度与时间对蛋白提取率的影响.由正交实验得出提取藻渣蛋白的最佳工艺条件为:浸提液p H值12、液料比40 m L/g、浸提温度45℃、浸提时间140 min,该条件下藻渣蛋白提取率为40.13%.所制藻渣蛋白氨基酸种类齐全,比例均衡,可作为理想的人蛋白来源.必需氨基酸占氨基酸总量的44.3%.蛋白质的必需氨基酸指数、氨基酸评分、化学评分、生物价、营养指数和氨基酸比值系数评分分别为82.24,63.32,46.66,77.94,35.84和74.21