基于RFID技术的现代仓储管理优化设计     

杨英姿  杨慧敏  王雨  吴月 《森林工程》2013,(3):115-117

针对当前大多数企业仓储管理模式落后,仓储方法效率低、成本高、出错率大等问题,提出将RFID技术引入到物流仓储管理过程中,优化现代仓储入库和出库流程,从而实现对库存货品状态和作业过程的全面化实时监控,做到货物先入先出和批量化扫描,使货物出入库管理更加方便快捷,提高仓储的效率,减少资源的浪费。  相似文献   

Changes in the anatomy of surface and liquid uptake of wood after laser incising     

Yue Wang  Keisuke Ando  Nobuaki Hattori 《Wood Science and Technology》2013,47(3):447-455

The effects of laser incising on the surface of heat-affected zones (HAZs) and liquid uptake of wood were examined. Deep pin holes were incised on the tangential section of the wood with a laser beam of 1 kW in power with varied pulse widths, and the HAZs of the holes were investigated using scanning electron microscopy. The length of liquid uptake passing through HAZs surfaces was then measured. It was observed that the HAZs were unable to maintain normal porous structure, and smooth surfaces such as that of wood charcoal were also not observed. This is because the composite of the middle lamella completely melted, which led to a decrease in the length of liquid uptake. In addition, the release of high gas-pressure and thermal energy during the laser-incising process did not damage the tylose and the aspirated pit in the longitudinal direction. Because of this, the liquid movement remained blocked. However, the incising holes provided additional liquid-intake points, resulting in greater intake capacity. Moreover, it was observed that improvement of liquid impregnation is related to hole diameter.  相似文献   

2,4-滴丁酯抗性细菌球形赖氨酸芽孢杆菌(Lysinibacillus sphaericus)的分离鉴定及生长特性研究     

滕春红  刘永双  陶波  李相全  于海涛  邱丽娟 《作物杂志》2013,(2):143-146

从生产2,4-滴丁酯的农药厂排污口采集污泥样品,驯化分离得到1株能够以2,4-滴丁酯为唯一碳源和能源生长的细菌T2,T2最高耐受2,4-滴丁酯浓度为200mmol/L.根据其形态特征、生理生化特性、16S rRNAm序列分析,初步鉴定T2为球形赖氨酸芽孢杆菌(Lysinibacillus sphaericus).采用正交试验优化得到T2最适生长条件为:接种量5％,培养基初始pH值为7,培养基装液量为50mL/250mL,培养温度30℃.  相似文献   

Explore of Adjustable Sun-shade Component on Windows     

Zheng Xing  Li Xiaodi  Chen Yue  Wang Lingyun 《保鲜与加工》2013,(Z1):202-205

In summer, sun-shade is essential for building energy conservation. Using green plants as a sun-shade material is an effective way to protect windows from solar radiation, save building energy and improve the environment. This design bases on the observing of window sill greening which plant by residents spontaneously and advances to a movable green plants sun-shade component on windows. The improvement makes the component become an adjustable ecological energy saving measure, which could meet the requirements of natural lighting and ventilating. Through the experimental data, we can find out that the awning window shading coefficient can reach to 0.1 ~ 0.2, and sun radiation heat can be kept out by 80%~90%.  相似文献   

用科学发展观回顾并展望中国人造板机械制造行业     

齐英杰  赵越  曲文  王炳宇 《林业机械与木工设备》2013,(4):4-14

回顾了中国人造板机械制造行业的形成与发展历史,介绍了中国人造板机械制造行业现状,结合"十二五"规划展望了该行业的发展趋势。  相似文献   

Development of integrated reactors for domestic garbage and town sludge          下载免费PDF全文

WU Zhengsong  ZHI Yue  HE Qiang  TANG Shitian  LING Jianjun  PAN Mingxia 《保鲜与加工》2013,(1):127-132

Aiming at domestic garbage aerobic compost and town sludge anaerobic treatment, on the basis of reactor TISTD (the integrated of sludge thickening and digestion)which is developed by the authors’ team, a TIDGTS (the integrated of domestic garbage and town sludge)reactor is designed.The reactor is made up of garbage and sludge chambers.Aerobic compost is adopted in the garbage chamber, while anaerobic fermentation is used in the sludge chamber, thus garbage and sludge can be treated in the same reactor.32~36 ℃ of sludge digestion can be ensured by the heat from sludge digestion, and 20 L sludge and 15 kg garbage can be treated per day.While inlet sludge moisture content is 97.2%~99.8% and VS/TS is 0.45~0.69, the discharged sludge moisture content is 92.7%~96.1% and VS/TS is 0.28~0.42.When the inlet garbage moisture content is 73.5% and VS/TS is 0.65~0.88, the discharged garbage moisture content is 48.6% and VS/TS is 0.32~0.44.The results show that the efficiency of concentration and digestion is near to TISTD which is heated by heating wire.  相似文献   

Circulating current control method for inductive power transfer system          下载免费PDF全文

DAI Xin  WANG Xiao  WANG Zhihui  TANG Chunsen  SUN Yue 《保鲜与加工》2013,(10):67-73

Inductive power transfer (IPT)technology allows electrical energy to be transferred between two loosely coupled inductors over relatively large air gaps based on electromagnetic induction. In current-fed IPT systems,resonant capacitor voltage distortions and current spikes on the semiconductor switches are easily caused when switches isn’t switched at zero crossing point of resonant voltage. As a result,the EMI level of the system and the switching loss are increased and thus the system transmission stability and efficiency decrease. The article analyzes the production mechanism of circulating current in load resonant high frequency inverter and points out that the resonant frequency change is the real cause. By analyzing the characters of circulating current before and after the zero-crossing points of resonant voltage and relationship between switching frequency and resonant frequency,this paper proposes a method of real-time detection for the direction of circulating current,and regulating the switching frequency in accordance with resonant frequency dynamically to ensure the switching of switch tubes at the zero-crossing points of the resonant capacitor voltage,and thus to inhibit circulating current. An experiental system with the platform of FPGA is set up to verify the effectiveness of this control method.  相似文献   

福建平潭岛景观格局时空演变规律     

孙月  黄义雄  汪娜  王亮 《福建林业科技》2013,40(1):75-80

在遥感、地理信息系统的支持下,基于2003、2011年Landsat-7卫星影像数据,运用Fragstats3.3景观格局分析软件和景观生态学的基本原理、方法,通过对比2003、2011年景观格局指数,分析研究福建省平潭岛的景观格局时空演变规律。结果表明:研究区景观各要素特征发生了较大变化,城镇、农村居民点的斑块面积由2003年的2464.08 hm2增加到2011年的4550.83 hm2;景观空间结构的变化表现为景观类型的形状指数和分维数都有不同程度的增加;邻近景观指标总体呈下降趋势,表明景观类型之间距离更远,变得更离散;景观异质性指数中的廊道斑块密度明显增大,增加量为21.96个.hm-2。8 a间平潭岛的景观格局呈现剧烈变化态势。  相似文献   

不同等级普洱茶的化学成分及抗氧化活性比较     

吕海鹏  林智  张悦  梁月荣 《茶叶科学》2013,(4):386-395

选用高、中、低三类不同等级的普洱茶为研究对象,研究比较了它们的抗氧化活性、香气成分及其主要理化成分含量的差异。结果表明,高、低两类等级的普洱茶相比,总氧化活性、清除羟自由基活性、清除DPPH自由基活性、醇类香气成分总量、杂氧化合物香气成分总量、黄酮总量以及茶色素含量等,一般都存在显著性差异(P<0.05);而中等级的普洱茶与高或低等级的普洱茶相比,除总氧化活性、清除羟自由基活性、茶多酚含量和黄酮总量存在显著性差异外(P<0.05),其他理化成分的含量一般都不存在显著性差异(P>0.05)。主成分分析表明,抑制羟自由基活性、总抗氧化活性、黄酮总量、茶褐素含量以及醇类香气成分总量等是区分普洱茶等级的重要理化指标。  相似文献   

茶树氧甲基转移酶基因的克隆及原核表达     

马成英  施江  吕海鹏  张悦  谭俊峰  郭丽  彭群华  林智 《茶叶科学》2013,(6):532-540

获得了一类茶树氧甲基转移酶基因cDNA全长并构建了该基因的原核表达载体。以从茶树叶片中提取的总RNA为模板,结合RT-PCR与RACE克隆技术获得氧甲基转移酶(O-methyltransferase)基因cDNA全长1 280 bp,其开放阅读框为1 068 bp,编码355个氨基酸,推测的蛋白分子量为39.1 kD,理论等电点为5.68。其氨基酸序列与葡萄和蓖麻氧甲基转移酶基因相似性分别为73%、71%。将该基因片段连接到原核表达载体pET-28a中,转化大肠杆菌BL21后诱导重组蛋白的表达,经IPTG诱导,SDS-PAGE检测到1条与预测融合蛋白分子量相符的外源蛋白。  相似文献