臭氧水处理对红富士苹果在两种贮藏温度下 果实品质的影响

研究不同浓度臭氧水处理对红富士苹果在两种贮藏温度下的贮藏品质和生理的影响.分别采用0.3,0.6,0.9,1.2 mg/L的臭氧水处理红富士苹果,然后分别贮藏于13℃和0℃,定期测定贮藏温度下的果实的生理和品质指标.臭氧处理对苹果果实呼吸强度及乙烯的释放均有一定的抑制作用;延缓苹果果实的可溶性固形物含量、可滴定酸含量及硬度的下降,减少果实水分的损失;0℃贮藏的保鲜效果普遍优于13℃贮藏条件.臭氧处理对红富士苹果具有较好的保鲜效果,0.9 mg/L臭氧水处理的效果优于其他各组,且0.9 mg/L臭氧水结合低温的贮藏方式更有利于红富士苹果贮藏品质的保持.     

浮顶储罐在地震荷载作用下数值模拟分析

摘要：为了研究浮顶对储罐结构在动力荷载作用下地震响应的影响,选取2000方原油储罐为研究对象,分别建立无浮顶储罐及浮顶储罐的有限元分析模型,进行Ⅲ类场地单向地震激励作用下储罐结构的有限元数值模拟计算,对其在地震荷载作用下的基底剪力、倾覆力矩、晃动波高进行详细的对比。结果表明浮顶的存在对储罐的基底剪力和倾覆力矩产生影响甚微;对晃动波高有一定的抑制作用,2000方储罐波高降低率为41%。     

嵌入式系统中Flash存储管理策略

Flash存储器因其体积小、容量大、成本低、掉电数据不丢失等一系列优点,成为嵌入式系统中主要数据和程序载体。然而,由于Flash读写存储的编程特点,有必要对其进行存储过程管理．以使其数据存储性能得以改善。本文以TRI公司的基于NOR Flash的Flash管理软件FMM为例,详细介绍嵌入式系统中如何根据Flash的物理特性来进行Flash存储管理,并在此基础上对其数据存储方法进行了改进。     

代数格上形态算子的表示方法

以二值形态运算中平移变换的作用为引导,赋予代数格上的自同构群可交换的特性,使得形态算子的表示更为明确.在此基础上研究了代数格上形态算子的表示定理,并将这种思想运用于Matheron二值形态算子表示定理与极小内核表示定理的证明中.     

Effects of Si and Ce on the microstructure and hydrogen storage property of Ti_(26.5)Cr_(20)V_(45)Fe_(8.5)Ce_(0.5) alloy

In this paper,the effects of Si and Ce on the microstructure and hydrogen storage property of Ti26.5 Cr20V45Fe8.5Ce0.5 alloy were studied,respectively.First of all,effects of Si on the microstructure and hydrogen storage properties of Ti26.5Cr20(V45Fe8.5)1-xSixCe0.5(x=0,0.5,1.0,1.5 and 2.0 at%)alloys were studied by X-ray diffraction,scanning electron microscopy and P-C isotherm measurements.As the Si addition increases,the hydrogen absorption capacities of alloys decrease but the equilibrium pressure incre...     

Graphene-based hybrid materials and their applications in energy storage and conversion

Graphene attracts more and more scientists and researchers owing to its superior electronic,thermal,and mechanical properties.For material scientists,graphene is a kind of versatile building blocks,and considerable progress has been made in recent years.Graphene-based hybrid materials have been prepared by incorporating inorganic species and/or cross-linking of organic species through covalent and/or noncovalent interactions.The graphene-based hybrid materials show improved or excellent performance in various fields.In this review,we summarize the synthesis of graphene and graphene-based hybrid materials,and their applications in energy storage and conversion.     

自动化立体仓库固定货架货位的优化研究

通过对自动化立体仓库总体工作过程和存储模式的分析，提出了一种基于作业时间的固定货架的货位优化设计思想，并应用遗传算法进行了实验验证，证明优化后的货位设计确实提高了仓储作业效率。     

Applying File Information to Block-Level Content Addressable Storage

Content addressable storage (CAS) is a promising technology for improving storage efficiency as well as access throughput.Currently,many CAS products are implemented on the block level,which results in loss of file information.Thus,some sophisticated optimizations cannot be achieved,such as accurate fileprefetching.This paper presents a file-aware block-level storage system combined with the CAS function.In contrast with some existing file-level CAS,this system is transparent to upper-level applications,including the operating system and the file system.These features are achieved by using smart-disk technologies to help the storage system to learn the file-system layout.A prototype was implemented on an open-source virtual machine (VM) with the guest operating system being Windows XP.Tests show that this combination significantly reduces the size of the VM image file and improves the storage performance by discarding unused blocks and using a simple file-level prefetching strategy.     

A NAM Representation Method for Data Compression of Binary Images

A representation method using the non-symmetry and anti-packing model (NAM) for data compression of binary images is presented.The NAM representation algorithm is compared with the popular linear quadtree and run length encoding algorithms.Theoretical and experimental results show that the algorithm has a higher compression ratio for both lossy and lossless cases of binary images and better reconstructed quality for the lossy case.     

二元序列的广义导数

给出了序列周期的另一类定义,研究了周期二元序列的广义导数序列的周期性,得到了周期二元序列的广义导数序列的一些性质,并进一步探讨了周期分别为2N和2N-1的二元序列的广义导数。