Protein-Protein Interaction of Fish Myosin Fragments

Protein-protein interaction of myosin fragments from flying fish and white marlin muscles was studied by means of absorbance changes resulting from aggregation at temperatures of 20°C to 70°C. Subfragment-1 (S-1) exhibited a high extent of interaction with the transition temperature of 35–36°C, while the interaction of heavy meromyosin (HMM) was very weak. Though light meromyosin (LMM) gave lower interaction values throughout the heating temperature, the addition of butanol promoted markedly the interactions at the temperature above 50°C. The degree of promotion was high for flying fish and low for white marlin.     

长时间水浸泡奥贝球铁的腐蚀行为及拉伸性能

研究了长时间水浸泡奥贝球铁(ADI)的腐蚀行 为和拉伸性能.浸泡中，ADI的石墨周围的基体被腐蚀，形成腐蚀凹坑；其中的针状铁素体优 先腐蚀.水附着拉伸试验中，浸泡后试样的抗拉强度和延伸率比未浸泡的低，发生明显的水 脆化.干燥使浸泡后试样的强度和延伸率恢复到较高水平，但腐蚀凹坑和表面腐蚀溶解减少 了试样的有效断面积，其抗拉强度和延伸率低于大气中的.与浸泡在离子交换水相比，自来 水加速试样腐蚀，其水脆化程度也明显.     

Plating fog generation in the forming of printed circuits by the additive method

Plating fog is often observed when metallizing a latent pattern by electroless copper plating. Metallic elements in the nuclei of plating fog particles are analysed using electron probe microanalysis (EPMA). Silver and iron are invariably found in the particles. The iron is driven into the board during the liquid honing process and reduces silver ions in the photosensitive material to silver metal which causes plating fog. Plating fog also arises from reduced copper particles or generated hydrogen gas bubbles when they are trapped on the unpatterned region. Mechanical stirring accompanied by substrate oscillation is an effective method of avoiding plating fog.     

Exploration on China's Institution-oriented Elderly Care Service System Based on Human Factors Engineering

Objective Aging process in China has brought more and more challenges to traditional home-based care for the aged and more attentions to the mode of institution...     

PROPERTIES OF ANALOGUE NEURAL NETWORKS

Abstract

Spatially discrete analogue neural networks and spatially continuous analogue neural networks are considered in this paper in studying the fundamental properties of analogue neural networks. A model of neural networks is discussed.     

Fault detection in linear discrete dynamic systems by a reduced order generalized-likelihood-ratio method

The detectability by conventional step-hypothesized generalized-likelihood-ratio (SHGLR) method for detection of a parameter change (fault detection) in a linear discrete dynamic system is analysed and it is shown that a weakly-diagnosable-space (WDS) exists for dynamics and sensor faults. Based on the fault detectability, a reduced order SHGLR method is then developed which highly improves the detection rate and speed. In the same framework of the GLR method, another reduced order detection scheme is given, which makes the most use of the information about the input and the state of the system to raise the detectability for faults for the case where the step hypothesis cannot be applied effectively.     

Plasma Fluid Flow Behavior and Power Generation Characteristics in a High‐Temperature Inert Gas Plasma Faraday MHD Generator

The plasma fluid flow behavior and power generation characteristics in a Faraday magnetohydrodynamic (MHD) generator using a high‐temperature inert gas (argon) plasma have been examined in a time‐dependent two‐dimensional numerical simulation. The inhomogeneous and unstable plasma at an inlet total temperature of 7000 K results in reductions and fluctuations in the output power. The plasma becomes homogeneous and stable as the inlet total temperature increases to 9000 K. One of the reasons for the suppression of ionization instability may be weakness of the dependency of the electrical conductivity on the electron number density, because the Coulomb collision of electrons becomes dominant during deviation from Saha equilibrium.     

Critical Generation Evaluation Using Hybrid Energy Function Method

It is well known that the transient energy function (TEF) method is useful for an efficient transient stability assessment as represented by the estimation of the critical clearing time (CCT). However, there still remains an issue for practical use: most of the TEF methods adopt the classical model of a synchronous machine in which the internally generated voltage is assumed to be constant. Moreover, critical generated output can be a more practical stability index instead of the CCT used in the conventional TEF methods. In this paper, a conventional hybrid TEF method is developed in order to estimate the transient stable critical generated power by using an improved hybrid simulation. The proposed method can handle the detailed model for a synchronous machine and can estimate the critical generated power with higher accuracy. Experimental results for a large network model are given in order to verify the practicability of the proposed method.     

A Simple Method to Determine Synchronous Machine Quantities Using Frequency Characteristics of Operational Impedances

This paper presents a simple method for determining synchronous machine quantities: d‐ and q‐axes time constants and reactances. This method determines them only by drawing additional lines in the frequency characteristics of operational impedances. A new systematic drawing strategy for determining transient/subtransient open‐circuit time constants and the d‐axis transient reactance is proposed. The frequency characteristics of operational impedances are obtained by the standstill dc test using a small dc power supply. Since the rotational test becomes unnecessary, the proposed method is suitable for tests in a factory. The validity of the proposed method was demonstrated with a numerical calculation example on a large‐capacity machine (800 MVA, 25 kV, two poles, 60 Hz) and an implementation test on a small‐capacity machine (10 kVA, 200 V, 31.9 A, four poles, 50 Hz).     

An analysis of dynamic characteristics of two-stage mixed products line production process and lot production process model

The following relations on two-stage mixed products line production process and lot production process are analysed, (i) Effects of the degree of autocorrelation /. on inventory variation, production variation and load variation at each process. (i) Effects of the common parts ratio β on inventory variation, production variation and load variation at each process. As a result effects of parameters 𝛌 and β are made clear and basic knowledge to design a production management system on the objective system model has been obtained.