Detect Vibration Displacement of The Outer Barrel When Fully Automatic Top Loading Washing Machine In The Drying Process

全自动波轮式洗衣机甩干外桶的振动量大小直接影响洗衣机的性能和品质。国产洗衣机利用机械式测振仪测量外桶振动量，方法简单，但振动大、不能用于洗衣机的尺寸优化。利用加速度计精确测量洗衣机外桶的振动量，为减少洗衣机外桶振动的控制和优化洗衣机整体尺寸提供依据。 本论文研究用一种新的MEMS结构的加速度计检测外桶振动位移的方法，通过单片机与加速度计的通信以及数据处理，为洗衣机提供准确的振动位移测量及振动控制手段。本论文主要研究工作如下： 1、提出了基于傅立叶变换的频域积分法，实现了加速度信号到位移信号的数据处理，解决了时域积分中趋势项对积分结果的影响，完成了基于加速度计的洗衣机外桶振动测量算法。 2...Fully automatic top loading washing machine in the drying process, the amount of vibration of the outer barrel is a very important indicator that will affect the performance of washing machines. Therefore, People had used mechanical vibration meter to measure vibration in the past, although this method is simple, but lack of precision, not intuitive. The detection system to quantify the vibration ...学位：工学硕士院系专业：物理与机电工程学院机电工程系_测试计量技术及仪器学号：1992008115296

CAN Bus Communication Node of the MCU and USB Communication with PC

介绍了应用PIC16f877和MCP2510实现CAn总线数据通信模块,模块内部采用SPI数据传输,并且利用fT245bl实现PC机与PIC单片机的uSb接口通信,组成一个演示系统。给出了系统结构框图与软硬件设计思路,提出了一种具有高可靠性、实时性和灵活性的CAn总线通信网络的实现方法。In this study,a module of CAN data communication using the PIC16F877 and MCP2510 is introduced.The SPI communication is used among the device in the module.And realized the USB interface communication between PC and PIC by using FT245BL,making up a show system.Give the diagram of the system's structure and the design of software and hardware,and propose a realized method about CAN bus communication network with high reliability,real-time and flexibility.福建省科技重大专项专题(2008HZ0002-1);福建省高等院校新世纪人才计划资助项

An Analysis of England Junior Football Training Theory and Practice —— Based on the Four Corners Model and STEPS Principle

文章运用实地访谈法、文献资料法等方法对英格兰青少年足球运动员训练培养的内容与方法进行了研究.通过分析训练实例得出,四角模型能从技术、体能、心理和社交四个方面综合培养青少年足球运动员的比赛能力;STEPS原则广泛应用于英格兰青少年各个年龄阶段的足球训练,且不同年龄阶段培养、发展技能的侧重点十分明确;在训练内容的安排上,注重进阶,接近实战,训练内容和方法具有科学性、针对性和全面性.文章旨在为我国青少年足球运动员的训练培养提供参考.This paper studies the contents and methods of training for young soccer players in England by means of field interviews, literature materials and logic analysis. Through the analysis of the training examples, the research finds that the four corners model can train young athletes comprehensively from four aspects： technique, physical, psychology and social communication. STEPS principle is applied widely for the training of youngsters in different ages, and its focus of developing skills is very clear. In the arrangement of training contents, it pays attention to the advanced steps, close to actual combat, and its training content and methods are scientific, targeted and comprehensive. The aim of the study is to provide reference for the training of the young soccer players in our country.2016年福建省中青年教师教育科研项目（JAS160005

浅谈我国自然垄断行业的政府管制

近年来我国自然垄断行业出现的低效率、高工资、高福利等现象逐渐进入公众的视野,越来越受到社会的关注,我国政府也已经开始探索并改革对自然垄断行业的管制方式。按照经济学理论,垄断可以分为行政垄断、自然垄断、市场垄断等几种。我国属于从计划经济体制向市场经济体制过渡的发展中国家,一般认为我国垄断主要是行政垄断和自然垄断两大类,而且通常是自然垄断中夹杂着行政垄断,市场垄断性行业还没有形成,政府应对自然垄断行业给予更多的管制

Effect of ZnF2 Coating on Performance of LiNi0.5Mn1.5O4 Cathode Material for Lithium-ion Batteries

采用溶胶-凝胶法制备了LiNi0.5Mn1.5O4正极材料，并利用Zn F2对其表面进行包覆改性。XRD、SEM和TEM测试表明，包覆处理不影响材料的晶体结构，2%(质量分数，以LiNi0.5Mn1.5O4质量计，下同)的Zn F2在LiNi0.5Mn1.5O4表面形成了约7 nm厚均匀包覆层。对未包覆的LiNi0.5Mn1.5O4和1%、2%、3%的Zn F2包覆后的LiNi0.5Mn1.5O4的电化学性能进行了考察，发现Zn F2包覆能够减弱电解液与LiNi0.5Mn1.5O4正极材料之间的相互作用，稳定电极表面，提高材料的电化学性能。其中，2%Zn F2包覆样品表现出最佳的循环性能和倍率性能，0.2C电流倍率下循环200圈后，其放电比容量维持在109.0 m A·h/g，保持率为79.7%；5 C电流倍率下循环500圈后，放电比容量维持在94.2 m A·h/g，保持率为85.6%

Application of Domain Decomposition Method in Eddy Current Testing Simulation

随着现代制造业的发展,涡流检测仿真问题日渐复杂。传统的单一求解区域方法的运用遇到瓶颈,而分解区域方法将复杂的单一区域上的求解转化为较简单的若干个子区域上的求解,克服了传统方法遇到的困难。该文主要介绍分解区域方法在涡流检测仿真中的应用。With the development of modern manufacturing,eddy current testing simulation becomes more and more complex.The traditional method using a single solution domain is not able to solve such problems.The domain decomposition method transforms complex solution on a single domain into relatively simple solution on subdomains and thus overcomes the difficulties of the conventional method.This article mainly introduces the use of domain decomposition method in eddy current testing simulation.航空科学基金项目资助(批准号:2009ZD68004

卤原子取代苯并噻二唑聚合物给体材料的合成及其光伏性能研究

通过对苯并噻二唑单元进行氟、氯等卤原子取代,并同时调节烷基侧链的长度,设计合成了一系列基于苯并噻二唑四噻吩类的聚合物太阳电池材料.不同卤原子取代以及烷基侧链的长度都会影响聚合物的结晶性和薄膜聚集形貌从而改变其带隙和电荷传输性质.氟、氯原子的引入可调节聚合物的能级结构,而且相对于氟原子而言,具有更大原子半径的氯原子的引入可在更大尺度下调节能级结构,从而大幅提高相应太阳电池的开路电压,同时通过侧链的优化可进一步调节聚合物的微观聚集结构,改善器件能量转换效率.结果表明,在氯原子和氟原子共同作用的情况下,引入较长的侧链有利于提升聚合物的开路电压和短路电流,从而获得较好的器件性能.其中,以氯、氟共同取代的聚合物PCFBT4T-2OD与PC71BM为活性层的器件性能最佳,能量转换效率可达8.84%.国家自然科学基金(基金号51773087,21733005);;广东省自然科学基金(基金号2016A030313637);;深圳市孔雀团队(项目号KQTD20140630110339343)资助项

The comparative study of amoxicillin and amoxicillin dicloxacillin sodium for the eradication of H.pylori

目的评价阿莫西林与阿莫西林双氯西林钠对幽门螺杆菌(H.PylOrI)的疗效。方法 155例确诊为消化性溃疡(Pu)(A期)且H.PylOrI阳性的患者随机分为3组,A组52例,给予兰索拉唑30 Mg+阿莫西林1.0 g+替硝唑0.5 g;b组51例,给予兰索拉唑30 Mg+阿莫西林双氯西林钠0.75 g+替硝唑0.5 g;C组52例,给予兰索拉唑30 Mg+阿莫西林双氯西林钠1.5 g+替硝唑0.5 g;均每日2次,疗程7 d。停用抗生素至少4周、停用PPI至少2周,复查13C-呼气试验和胃镜尿素酶检查、观察3组H.PylOrI根除率和溃疡愈合情况,记录药物不良反应(Adr)。结果 3组H.PylOrI根除率差异有统计学意义(P0.0167)。3组溃疡愈合率差异均无统计学意义(P>0.05)。3组溃疡有效率差异有统计学意义(P0.05)。结论阿莫西林对H.PylOrI根除率高,溃疡有效率较高,Adr发生率低。Objective To evaluate effecacy of amoxicillin and amoxicillin dicloxacillin sodium for the eradication of H.pylori.Methods Totally 155 helicobaeter pylori-infected patients with peptic ulcer diagnosed by endoscopy were enrolled.The patients were randomly divided into three groups,and drugs were given as follows: each of the 52 patients of group A was given lansoprazole 30 mg+amoxicillm 1.0 g+tinidazole 0.5 g;each of the 51 patients of group B was given lansoprazole 30 mg+amoxicillin dicloxacillin sodium 0.75 g+tinidazole 0.5 g;each of the 52 patients of group C was given lansoprazole 30 mg+amoxicillin dicloxacillin sodium 1.5 g+ tinidazole 0.5 g.All drugs were given twice a day for seven days.After finishing of H.pylori therapy at least four weeks,and after withdrawing of PPI at least two weeks,we compared the H.pylori status,ulcer healing,and side-effects among three groups by inquisition,endosecopy and 13C breathing test.Results There was significant difference of the H.pylori eradication rate among the three groups(P0.05) among the three groups.There was significant difference among the three groups(P<0.05).The results between group A and group B were significantly different(P<0.0167).The results between group A and group C were not significantly different,either were the results between group B and group C.The rate of ADR showed no significant difference among the three groups.Conclusion Comparison of three groups,amoxicillin,which has highest H.pylori eradication rate,highest ulcerative healing,lowest incidence of ADR,is better than amoxicillin dicloxacillin sodium as an antibiotics for H.pylori eradication

The primary investigation of the value of whole body diffusion weighted imaging in diagnosis of metastatic tumor

背景与目的:随着临床上晚期肿瘤病例的增多,为了解治疗前、后全身转移瘤的大小及数量变化的实际情况,以往多采用分部位进行CT和(或)Mr扫描,少部分有条件的患者采用PET检查,但这些方法可能存在过多地暴露于射线、检查时间过长及经济负担过重等问题。因此,我们探讨磁共振的全身弥散加权成像(WHOlE bOdy dIffuSIOn WEIgHTEd IMAgIng,WbdWI)方法对肿瘤及转移灶的检出准确性及其临床应用的可行性。方法:对68例临床已发现原发肿瘤及多个转移灶或发现多个肿瘤病灶,但原发灶不明确的患者进行WbdWI检查,其中男性49例;女性19例。平均年龄61岁。68例均与CT和(或)MrI的检查结果进行比较,其中17例与PET的检查结果相比较。对病灶的检出率,以病灶长径大小分为:<1CM,≥1~<2CM,≥2~<3CM及≥3CM以上4组进行计数分析,同时,对不同部位间的病灶检出情况进行分析。结果:WbdWI对4组病灶的检出率分别为30%、78%、96%及100%。在各个部位的敏感性和准确性中以骨骼最高。对位于肺部小于1CM的病灶和位于颈部、盆腔小于2CM的淋巴结的诊断存在一定困难。结论:WbdWI对大范围的肿瘤病灶筛查是安全、简便、有效和经济的检查新方法。随着技术参数的进一步完善,WbdWI在发现和诊断全身多发肿瘤方面,具有良好的发展潜力。因此,本技术有望作为一种新的、效果好于PET的全身检查技术。Background and purpose:With the increased number of advanced tumors,it is important to evaluate the actual pre-and post-treatment changes in metastatic diseases,such as tumor size and tumor quantity.Previously,CT and/or MRI scan were usually applied,only a few patients could pay for PET(positron emition tomography).But there were several problems we should face,including redundantly exposure to radiation,too long verification time and heavy financial burden.Therefore we evaluated the application of whole body diffusion weighted imaging in diagnosing of tumor and metastatic tumor.Methods:sixty-eight patients(49 male,19 female,age from 29 to 84 years with mean age of 61 years) with a variety of tumors were investigated by combined CT and/or MRI scan,seventeen patients were compared with positron emition tomograph(PET).All tumors were classified into four groups,according to longest diameter of <1 cm,≥1-<2 cm,≥2-<3 cm and ≥3 cm.At the same time,the positive detection rates between different parts of the lesions were analyzed.Results:The detection rate of the four groups were 30%,78%,96% and 100%,respectively.The skeletal system had the highest sensitivity and accuracy in every part of body.There was difficulty in diagnosing lung cancer with longest diameter less than 1 cm as well as tumors located in neck and pelvic with longest diameter less than 2 cm.Conclusion:Whole body diffusion weighted imaging is secure,convenient,effective and economic for screening wide-ranging tumor focus.After improvement of parameters,WBDWI could be as a new effective whole body examination technique.厦门市科技计划项目(No:3502Z20074017

缺氧诱导因子1 alpha在急性心肌缺血中的表达规律

【目的】研究心肌缺血状态下HIF-1α的表达规律及其在死亡之后48h的动态变化。【方法】建立SD大鼠急性心肌缺血模型。随机将大鼠分为正常对照组、假手术组、急性心肌缺血试验组和窒息组。用免疫组化、RT-PCR和Western blot检测心肌缺血及死亡后HIF-1α的表达规律。【结果】术后30min缺血心肌中开始出现HIF-1α mRNA表达上调，4～6h达高峰，至术后48h仍维持此高水平；蛋白质的表达相对滞后，于术后2h开始被检测到，之后表达进行性上升，至12h达高峰后维持在高水平；其它各组HIF-1α检测均为阴性。大鼠术后48h处死，死亡后48h内均可检测到HIF-1α mRNA和蛋白质的表达，但表达呈进行性下降趋势；其他各组均未检测到HIF-1α表达。【结论】HIF-1α可作为一个早期心肌缺血的敏感的辅助诊断指标，并用于急性心肌缺血缺氧性死亡和其他原因（例如窒息）缺氧造成的死亡的鉴别