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Article
Publication date: 11 September 2009

Jianfei Yu, Quanfen Feng and Yafei Yu

The purpose of this paper is to study the corrosion behavior of copper in 3.5 percent NaCl solutions with and without 3‐amino‐5‐mercapto‐1,2,4‐triazole (3‐AMT).

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Abstract

Purpose

The purpose of this paper is to study the corrosion behavior of copper in 3.5 percent NaCl solutions with and without 3‐amino‐5‐mercapto‐1,2,4‐triazole (3‐AMT).

Design/methodology/approach

Weight‐loss measurement, potentiodynamic polarization, and electrochemical impedance spectroscopy are applied to study the corrosion behavior of copper in the absence and presence of different concentrations of 3‐AMT under the influence of various experimental conditions.

Findings

The results show that inhibition efficiency (IE) increases with increasing the immersion time in the presence of 1.0×10−4 mol/l 3‐AMT and the IE% maintains about 94 percent during the studied inhibitor concentration of 5.0×10−3 mol/l. The Tafel polarization studies indicate that the IE% increases with increasing concentration of 3‐AMT, and the compound was a mixed inhibitor. The adsorption of 3‐AMT on the surface on copper has been found to obey the Langmuir adsorption isotherm, and the values of free energy of adsorption are calculated. 3‐AMT is chemically adsorbed on the copper surface.

Originality/value

The results of this paper can be used for reducing corrosion rates of copper in which a suitable inhibitor with the highest efficiencies is required in chloride solutions.

Details

Anti-Corrosion Methods and Materials, vol. 56 no. 5
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 27 June 2008

Li Jiang, Xuhui Mao, Jianfei Yu and Fuxing Gan

The purpose of this paper is to study corrosion behavior and corrosion mechanism of carbon steel in natural freshwaters with humic acid (HA).

468

Abstract

Purpose

The purpose of this paper is to study corrosion behavior and corrosion mechanism of carbon steel in natural freshwaters with humic acid (HA).

Design/methodology/approach

The weight‐loss method, electrochemical measurements and surface analysis technique were used to study the corrosion behavior of carbon steel in freshwaters with HA.

Findings

General corrosion occurred when carbon steel was exposed to test solutions (fresh lake water with and without HA). The presence of HA in test solution can accelerated the corrosion rate of carbon steel.

Originality/value

There have been few reports on the effect of HA on the corrosion behavior of carbon steel. In this study, it is clearly shown that the presence of HA in fresh lake water can accelerate the corrosion rate of carbon steel. This research not only can offer theoretical guidelines for the prevention of pipelines and facilities from corroding, but also can provide a reference for suitable material selection and the further protection of carbon steel in hydraulic engineering.

Details

Anti-Corrosion Methods and Materials, vol. 55 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 12 September 2008

Jianfei Yu, Li Jiang and Fuxing Gan

This paper aims to study the corrosion behavior of carbon steel and stainless steel in white oil with naphthenic acid under high temperature.

856

Abstract

Purpose

This paper aims to study the corrosion behavior of carbon steel and stainless steel in white oil with naphthenic acid under high temperature.

Design/methodology/approach

The weight‐loss method and surface analysis were used to study the corrosion behavior of steel in white oil with naphthenic acid.

Findings

Naphthenic acids corrosion rates were directly related to experimental temperature, immersion time and total acid number (TAN). The activation energy was calculated and the process kinetics could be represented by Arrhenius‐type equation. The relationship between the isothermal line in liquid phase and that in vapor phase at different TAN values had a significant distinction with the change of temperature.

Originality/value

The findings have important implications for assessing the corrosivity of crude oils with high TAN value from various resources.

Details

Anti-Corrosion Methods and Materials, vol. 55 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 9 January 2009

Li Jiang, Xuhui Mao, Jianfei Yu, An Lin and Fuxing Gan

The aim of this paper is to study the corrosion behavior and corrosion mechanism of carbon steel in polluted freshwaters with organophosphorus pesticide (OP).

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Abstract

Purpose

The aim of this paper is to study the corrosion behavior and corrosion mechanism of carbon steel in polluted freshwaters with organophosphorus pesticide (OP).

Design/methodology/approach

The weight‐loss method, electrochemical measurements and surface analysis technique were used to study the corrosion of carbon steel in polluted freshwaters with OP.

Findings

General corrosion occurred when carbon steels were exposed to test solutions (freshwaters with and without OP). The presence of OP in test solutions can accelerate the corrosion rate of carbon steel.

Originality/value

The aim of this work was to evaluate the effect of a single OP (diethyl phosphite) on the corrosion of carbon steel. Until now, there was little research to report on this aspect. It was found that the presence of diethyl phosphite at low concentrations could accelerate the corrosion rate of carbon steel in freshwaters. This research not only can offer theoretical guidelines for the prevention of pipelines and facilities from corroding, but also can provide reference for suitable material selection.

Details

Anti-Corrosion Methods and Materials, vol. 56 no. 1
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 7 May 2024

Tian-Yu Wu, Jianfei Zhang, Yanjun Dai, Tao-Feng Cao, Kong Ling and Wen-Quan Tao

To present the detailed implementation processes of the IDEAL algorithm for two-dimensional compressible flows based on Delaunay triangular mesh, and compare the performance of…

43

Abstract

Purpose

To present the detailed implementation processes of the IDEAL algorithm for two-dimensional compressible flows based on Delaunay triangular mesh, and compare the performance of the SIMPLE and IDEAL algorithms for solving compressible problems. What’s more, the implementation processes of Delaunay mesh generation and derivation of the pressure correction equation are also introduced.

Design/methodology/approach

Programming completely in C++.

Findings

Five compressible examples are used to test the SIMPLE and IDEAL algorithms, and the comparison with measurement data shows good agreement. The IDEAL algorithm has much better performance in both convergence rate and stability over the SIMPLE algorithm.

Originality/value

The detail solution procedure of implementing the IDEAL algorithm for compressible flows based on Delaunay triangular mesh is presented in this work, seemingly first in the literature.

Details

Engineering Computations, vol. 41 no. 3
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 20 February 2025

Xin Huang, Yuxing Peng, Jianfei Li, Guiju Zhu and Han Peng

This article aims to elaborate on the current relevant policies, research literature and technical applications of administrative intelligent decision-making in major countries in…

4

Abstract

Purpose

This article aims to elaborate on the current relevant policies, research literature and technical applications of administrative intelligent decision-making in major countries in the world, to summarize the current focus areas of international competition in administrative intelligent decision-making and to provide references and insights for other countries.

Design/methodology/approach

The knowledge graph tool CiteSpace was used to conduct a quantitative analysis of the field of administrative intelligent decision-making, using the two dimensions of research literature and technology patents to analyze the basic status and evolution process of artificial intelligence applied to administrative decision-making.

Findings

Over the past 30 years, theoretical research on administrative intelligent decision-making has primarily centered on countries like the United States of America, China and Japan. The main themes include leveraging artificial intelligence (AI) technology to enable digital government transformation, enhance administrative efficiency and promote public value through service-oriented initiatives. Countries like South Korea, China and the United States of America have demonstrated significant advantages in technology development and patent applications, focusing on e-government systems, intelligent government auditing, addressing policy mismatches between supply and demand and integrating online and offline administrative services. The international competitive landscape in this field is shaped by three key factors: foundational theories, technological advancements and practical scenario applications.

Originality/value

Despite the rapid advancements in AI technology and the acceleration of enterprise digital transformation, discussions on the intelligent transformation of administrative decision-making leveraging next-generation information technology remain limited. This study summarizes the development trajectory of administrative intelligent decision-making in major countries worldwide, analyzes the international competitive landscape of its theoretical and application research and highlights key focus areas. These findings offer valuable insights for advancing the construction of administrative intelligent decision-making systems in other nations.

Details

Library Hi Tech, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0737-8831

Keywords

Available. Content available
Book part
Publication date: 10 July 2019

Anna Visvizi, Miltiadis D. Lytras, Wadee Alhalabi and Xi Zhang

Abstract

Details

The New Silk Road Leads through the Arab Peninsula: Mastering Global Business and Innovation
Type: Book
ISBN: 978-1-78756-680-4

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Article
Publication date: 2 July 2020

Xiaoxi Zhou, Jianfei Meng, Guosheng Wang and Qin Xiaoxuan

This paper examines the problem of lack of historical data and inadequate consideration of factors influencing demand in the forecasting of demand for fast fashion clothing and…

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Abstract

Purpose

This paper examines the problem of lack of historical data and inadequate consideration of factors influencing demand in the forecasting of demand for fast fashion clothing and proposes an improved Bass model for the forecasting of such a demand and the demand for new clothing products.

Design/methodology/approach

From the perspective of how to solve the lack of data and improve the precision of the clothing demand forecast, this paper studies the measurement of clothing similarity and the addition of demand impact factors. Using the fuzzy clustering–rough set method, the degree of resemblance of clothing is determined, which provides a basis for the scientific utilisation of historical data of similar clothing to forecast the demand for new clothing. Besides, combining the influence of consumer preferences and seasonality on demand forecasting, an improved Bass model for a fast fashion clothing demand forecast is proposed. Finally, with a forecasting example of demand for clothing, this study also tests the validity of the method.

Findings

The objective measurement method of clothing similarity in this paper solves the problem of the difficult forecasting of demand for fast fashion clothing due to a lack of sales data at the preliminary stage of the clothing launch. The improved Bass model combines, comprehensively, consumer preferences and seasonality and enhances the forecast precision of demand for fast fashion clothing.

Originality/value

The paper puts forward a scientific, quantitative method for the forecasting of new clothing products using historical sales data of similar clothing, thus solving the problem of lack of sales data of the fashion.

Details

International Journal of Clothing Science and Technology, vol. 33 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

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Article
Publication date: 7 July 2023

Jianfei Zhao, Thitinan Chankoson, Wenjin Cheng and Anan Pongtornkulpanich

A green innovation strategy is an important step for enterprises to balance economic and environmental. As the executors of strategic decisions, the attitude and capabilities of…

879

Abstract

Purpose

A green innovation strategy is an important step for enterprises to balance economic and environmental. As the executors of strategic decisions, the attitude and capabilities of senior managers determine the effectiveness of implementing green innovation. Therefore, this paper aims to explore the relationship between executive compensation incentives and green innovation.

Design/methodology/approach

Based on the data of heavily polluting enterprises listed in China's A-share market from 2015 to 2020, this study constructs an OLS model with fixed effects of time and industry, and uses the mediation three-step method to verify the correlation between executive compensation incentives, innovation openness and green innovation. Meanwhile, the grouping regression was used to test the moderating effect of environmental regulation on executive compensation incentives.

Findings

The empirical results show that executive salary incentives promote green innovation and equity incentives inhibit green innovation; the openness breadth partially mediates the relationship between salary incentives, equity incentives and green innovation, while the openness depth only partially mediates the relationship between equity incentives and green innovation; and environmental regulation positively moderates executive incentives.

Research limitations/implications

Due to sample selection and variable measurement, the study lacks certain generality. Therefore, future research needs to further analyze the internal factors affecting green innovation from multiple dimensions.

Practical implications

This study provides a new evidence for analyzing how executive compensation measures affect green innovation, and further enhances the mediating mechanism of open innovation.

Originality/value

This study has significant theoretical implications for examining the intra-firm factors that affect green innovation.

Details

European Journal of Innovation Management, vol. 28 no. 2
Type: Research Article
ISSN: 1460-1060

Keywords

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Article
Publication date: 4 February 2020

Jianfei Li, Mengxia Sun, Li Ren and Bei Li

The advent of the new retail era witnessed the consumers’ demand shift from on the traditional product quality to on the full supply chain service quality, and product service and…

200

Abstract

Purpose

The advent of the new retail era witnessed the consumers’ demand shift from on the traditional product quality to on the full supply chain service quality, and product service and service manufacturing is gradually taking shape. The purpose of this paper is to propose whether there is a “quality bridge” in the dynamic evolution process of retail service supply chain (RSSC) and discuss the system role, steady-state characteristics and dynamic evolution mechanism of service quality in this dynamic evolution process.

Design/methodology/approach

This paper proposes the dissipation system structure of the RSSC under the steady-state quality constraint, constructs a Markov chain model (MCM) for the evolution of the service quality of RSSC, and tests the objective existence of the steady-state distribution of the service quality by taking Chinese HJ retail enterprises as samples.

Findings

The research value of this study is summarized as follows. The research finds that the evolution of service quality of RSSC is a dynamic and non-linear growth process, which has significant characteristics of complex adaptability and steady-state convergence. The study finds that the quality evolution process of the RSSC is a steady-state convergence process, and there is a steady-state distribution of quality in its co-evolution, in which different process input levels have a significant positive impact on the stable level of quality state. The study finds that the steady state of quality plays a crucial role in the collaborative evolution of the RSSC, that is, when the service quality reaches a certain steady state distribution, the operating efficiency and profit level of the whole chain will show an “explosive” growth trend.

Originality/value

Quality bridge, an original concept in this paper, represents the role of quality steady-state in the operation of RSSC. Based on Markov chain and system simulation tools, this paper verifies the existence of steady-state service quality and its positive effect on the co-evolution and sustainable development of RSSC. When the service quality reaches a certain steady distribution, the operating efficiency and income level of the whole chain will show n trend of explosive growth.

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