浅谈备件料码系统的常见问题及优化策略

本文剖析了某钢厂备件料码系统存在的料码格式不规范、类纲目界限不清、料码闲置化严重、料码兼容性不强和重复料码普遍等常见问题,提出了制订料码细则、完善类纲目、编写规格参数录入模板、删减重复呆滞码、优化ERP功能等策略,为企业实现通用备件集中申报及全局优控的降本目的奠定了基础。

浅谈料垛码法对倒焰式燃气窑内气流分布及温度均匀性的影响

通过料垛码法形成的气流通道大小对倒焰式燃气窑内气流分布以及温度均匀性的影响进行了分析,认为在一定的条件下,通道大小与气体流动速度和流量成正比,根据这一结论,可对倒焰燃气窑内料垛码法起到一定的指导作用。

PC钣金件自动码料装置的设计与研究

针对某公司PC钣金件在冲压落料后杂乱无序,依靠人工搬运、摆放,效率低,成本高等问题,研制出一款PC钣金件自动码料的装置,该装置设计两个码料工位,采用PLC和气动控制系统,通过导料机构的送料,夹紧机构取件,摇杆和托板机构对钣金件码料,双向气缸的换位,最终完成自动码料。投产后,降低了企业生产成本和劳动力,提高了生产效率,装置稳定性好。

沥青码蹄脂碎石混合料在旧路改造中的应用

沥青玛蹄脂碎石SMA（Stone Mastic Asphalt）混合料是一种新型的沥青混合料，以其优良的抗车辙性能和抗滑性能而广受关注。本文结合广州市旧路改造的工程实践，介绍SMA的应用情况。

一种基于PLC控制的冷弯成型生产线气动码料装置的研制

针对国内汽车冷弯型材生产线自动化程度较低的情况,自行设计了一种基于PLC控制的自动码料设备。在介绍气动码料设备整体结构和功能的基础上,以MASTER K120S PLC为控制核心,采用电气控制技术和气动控制相结合的控制技术,实现了车门冷弯型材的自动化生产。

剪板机码料系统升降台的设计

我国现阶段大部分汽车生产商下料工作基本上是由剪板机完成,目前我国绝大多数工厂还是采用人工上料、人工码料。本文立足现状,以多数厂家现有的较为陈旧的依靠人工操作与叉车配合的码料方式为参照,对码料系统承力结构的主要部件升降台进行选型设计及受力分析,基于液动类的升降台构型,进行参数计算,为码料系统的整体设计提供支撑。

框架式玻璃幕墙横竖料连接方式之探讨

本文针对目前市场上幕墙设计中常用的框架式玻璃幕墙横竖料之间的连接方式,对其在构造及受力上的优缺点进行了详细的分析,并在此基础上提出了一种改进型的横竖料连接方式,为框架式幕墙构造设计的合理创新性及安装的便利性提供了一定的参考作用。

Complete mitochondrial genome of yellow meal worm （Tenebrio molitor）

The yellow meal worm （Tenebrio molitor L.） is an important resource insect typically used as animal feed additive. It is also widely used for biological research. The first complete mitochondrial genome of T. rnolitor was determined for the first time by long PCR and conserved primer walking approaches. The results showed that the entire mitogenome of T. molitor was 15 785 bp long, with 72.35% A＋T content [deposited in GenBank with accession number KF418153]. The gene order and orientation were the same as the most common type suggested as ancestral for insects. Two protein-coding genes used atypical start codons （CTA in ND2 and AAT in COX1）, and the remaining 11 protein-coding genes started with a typical insect initiation codon ATN. All tRNAs showed standard clover-leaf structure, except for tRNASer （AGN）, which lacked a dihydrouridine （DHU） arm. The newly added T. molitor mitogenome could provide information for future studies on yellow meal worm.

Real-Code Genetic Algorithm for Ground State Energies of Hydrogenic Donors in GaAs-（Ga,Al）As Quantum Dots

We present a global optimization method, called the real-code genetic algorithm (RGA), to the ground state energies. The proposed method does not require partial derivatives with respect to each variational parameter or solving an eigenequation, so the present method overcomes the major difficulties of the variational method. RGAs also do not require coding and encoding procedures, so the computation time and complexity are reduced. The ground state energies of hydrogenic donors in GaAs-(Ga,Al)As quantum dots have been calculated for a range of the radius of the quantum dot radii of practical interest. They are compared with those obtained by the variational method. The results obtained demonstrate the proposed method is simple, accurate, and easy implement.

Resin Matrix/Fiber Reinforced Composite Material, Ⅱ: Method of Solution and Computer Code

According to a mathematical model which describes the curing process of composites constructed from continuous fiber-reinforced, thermosetting resin matrix prepreg materials, and the consolidation of the composites, the solution method to the model is made and a computer code is developed, which for flat-plate composites cured by a specified cure cycle, provides the variation of temperature distribution, the cure reaction process in the resin, the resin flow and fibers stress inside the composite, the void variation and the residual stress distribution.

The Binding of Cholic Acid by Hemicellulose and Pectin of Yard-Long Bean [Vigna sesquipedalis （L.） Fruhw]

The aim of the study was to describe the binding of cholic acid by hemicellulose and pectin of yard-long bean at gastrointestinal system （in vitro）, through variation of acidity （pH 3, 5 and 7） and boiling time （raw/0, 5, 20 and 35 minutes） of yard-long bean. Two-way Anova （α= 5%） and functional groups analysis by infrared spectrophotometer were applied for the binding description. The results of the study showed： （1） The highest binding percentage of cholic acid by dietary fiber of yard-long bean at pH 3-raw treatment （76.603%）; （2） Cholic acid binding via C = O/ester or acid of hemicellulose, C-O-C/cyclic ether of pectin, while C = O/ester or acid of oectin through iron.

Development of an Evaluation Methodology for Fuel Discharge in Core Disruptive Accidents of Sodium-Cooled Fast Reactors

The purpose of the present study is to develop a methodology to evaluate fuel discharge through the CRGT （control-rod guide tube） during CDAs （core-disruptive accidents） of SFRs （sodium-cooled fast reactors）, since fuel discharge will decrease the core reactivity and CRGTs have a potential to provide an effective discharge path. Fuel discharge contains multi-component fluid dynamics with phase changes, and, in the present study, the SFR safety analysis code SIMMER （Sn, implicit, multifield, multicomponent, Eulerian recriticality） was utilized as a technical basis. First, dominant phenomena affecting fuel discharge through the CRGT are identified based on parametric calculations by the SIMMER code. Next, validations on the code models closely relating to these phenomena were carried out based on experimental data. It was shown that the SIMMER code with some model modifications could reproduce the experimental results appropriately. Through the present study, the evaluation methodology for the molten-fuel discharge through the CRGT was successfully developed.

Effect of dry density on ^(125)I diffusion in GMZ bentonite

Gaomiaozi （GMZ） bentonite is regarded as the favorable candidate backfilling material for a potential repository in China. It is important to understand the diffusion behavior of ^125I in GMZ bentonite and compare the diffusion behavior in GMZ and other types of bentonite like MX-80, Avonlea, etc. Therefore, through- and out-diffusion experiments were conducted to obtain the effective diffusion coefficient （De） and distribution coefficient （Kd）. A computer code named Fitting for diffusion coefficient （FDP） was used for the experimental data processing and theoretical modeling. At the dry density of GMZ bentonite from 1600-2000 kg/m^3, the De values of ^125I were （2.4-20.4）×10 ^-12 m^2/s and Ka values were constants. At dry density above 1800 kg/m^3, the diffusion behaviors were almost the same, indicating that the anion exclusion was ineffective. Out-diffusion results showed that the species of ^125I may be changed during the diffusion processing. It was probably caused by some organic mat- ters or reducing substances in GMZ bentonite. Since the main composition of bentonite is montmorillonite, similar diffusion parameters were obtained in GMZ and other types of bentonite. The relationship of DE and accessible porosity （εacc） could be described by Archie＇s law with exponent n = 1.2-2.8 for ^125I diffusion in bentonite, whereas n = 2.0 in GMZ bentonite. Fur- thermore, bentonite with the dry density of 1800 kg/m^3 was proposed as the backfilling materials used in the construction of high level radioactivity waste repository.

The codes of matter and their applications

The elements in the periodic table are the building blocks used to form substances with different compositions. Nevertheless, it is the properties of substances that are decisive for their existence and practical applications. Searching for new class of materials with exotic properties has always been challenging because of the complexity of both the theoretical and the experimental approaches developed so far. Here, we propose that the three ubiquitous and paramount attributes of all existing matter charge(Q), spin(S) or rotational motion, and linear motion(K) can be used to account for the formation of different types of matter/materials and their properties that have been or will be known to us. The three attributes or original codes can produce six primary codes which can further produce another sixty codes. The physical meanings represented by each code are unlocked. The table consisting of the 60 codes is introduced as the table of properties of codes of matter. We demonstrate that these codes can be used as building blocks to form new properties and new materials. Many new types of quasiparticles and new classes of materials with exotic properties of Q, S and K are predicted. Their possible experimental realizations are proposed. The possible applications of the codes of matter in other fields such as elementary particles, photonics and chemistry are briefly discussed. We know that there should be more new materials and new electronic, spin and photonic states to be discovered, but we do not know what they are. The codes of matter clearly reveal to us how many and what they are and how easily we can recognize what they are. Experimental and theoretical exploration for new forms of matter, new quasiparticles, or new electronic and spin states, or new states of photon or properties of light, as well as macroscopic entities with exotic properties represented by the codes of matter, is imminent.

A mirror-image protein-based information barcoding and storage technology

A mirror-image protein-based information barcoding and storage technology wherein D-amino acids are used to encode information into mirror-image proteins that are chemically synthesized is described.These mirror-image proteins were then fused into various materials from which information-encoded objects were produced.Subsequently,the mirror-image proteins were extracted from the objects using biotin-streptavidin resin-mediated specific enrichment and cleaved using an Ni(Ⅱ)-mediated selective peptide cleavage.Protein sequencing was accomplished using liquid chromatography/tandem mass spectrometry(LC-MS/MS)and then transcoded into the recorded information.We demonstrated the use of this technology to encode Chinese words into mirror-image proteins,which were then fused onto a poly(ethylene terephthalate)(PET)film and retrieved and decoded by LC-MS/MS sequencing.Compared to information barcoding and storage technologies using natural biopolymers,the mirrorimage biopolymers used in our technology may be more stable and durable.

Bioinspired perovskite quantum dots microfibers from microfluidics

As perovskite quantum dots(PeQDs)are performing their outstanding characteristics,incremental efforts have been devoted to such materials.Here,inspired by the spider spinning process,we present novel PeQDs microfibers with tailorable morphologies and functions from a multi-injection microfluidic approach.The microfibers were generated by introducing PeQDs precursors into each barrel of the inner capillary array and mixing them in the spindle middle channel,where the poly(vinylidene fluoride)(PVDF)dissolved in N,N-dimethyl formamide(DMF)was also injected as their sheath fluid.During this process,the PeQDs were in situ synthesized with the connection of precursor cations and anions in the core fluid;while the PVDF formed solidified microfibers to encapsulate PeQDs with the fast dispersion of DMF into the outer aqueous solution.Thus,the good encapsulation of PeQDs was achieved in PVDF microfibers,which effectively protected them from different hostile environments.Because of the highly tunable spinning processes,the microfibers exhibited controllable diameters and helical geometric structures,and the encapsulated PeQDs could yield adjustable emission peaks.Based on the PeQDs microfibers,we have explored their potential as luminescent materials in barcodes and as flexible photodetectors,which make such microfibers highly versatile for different areas.