Enalapril maleate as a green accelerator for zinc phosphating coating on low-carbon steel

Weishan Wang,Yuqin Tian,Aojue Ke,Haowei Huang,Huifang Shen,Xinya Zhang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-

In this study, enalapril maleate (EM), a green ingredient of an antihypertensive drug, was selected as anaccelerator for phosphate coating promoting on low-carbon steel. The scanning electron microscope(SEM), X-ray diffraction (XRD), 3D morphologies, coating weight, coating thickness and free acidity(FA) as well as total acidity (TA) were characterized to analyze the coating performance. Copper sulfatetitration, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) wereperformed to evaluate corrosion resistance of phosphate coatings. The DFT computations were appliedto explore the phosphating promoting mechanism. The results show that the EM optimal concentrationis 1.6 g/L which lowers the operating temperature (form 80 ℃ to 40 ℃), generates the smoothest (Ra = 2. 85 lm), the heaviest (28.35 g/cm2) and the thinnest (21.6 lm) coating, and reduces the corrosion ratefrom 1.099 mpy of blank to 0.0246 mpy. The density functional theory (DFT) results confirm that EMadsorbs on low-carbon steel by electrophilic sites (N10) as well as nucleophilic sites (C10), forms nucleatedparticles preferentially and accelerates the growth of crystals. Therefore, EM is a green organic compoundwith high phosphating promotion efficiency which has potential application prospects inindustrial phosphating.

Synergy between Software Product Line and Intelligent Pervasive Middleware- a PLIPerM Approach

Weishan Zhang 보안공학연구지원센터 2008 International Journal of Hybrid Information Techno Vol.1 No.1

ReferencesThe current pervasive middleware is designed to have a monolithic structure according to a ‘one-size-fits-all’ paradigm, which lacks necessary flexibilities for optimization, customization and adaptation to different situations. Ontology evolution is another problem that has not been addressed by the existing pervasive middleware. In this paper, we propose the marriage of software product line and intelligent agent based pervasive middleware in order to alleviate these problems, in the context of an ongoing research project called PLIPerM. Frame based software product line techniques are used together with OWL ontology reasoning enhanced BDI (Belief-Desire-Intention) agents, which are the basic building blocks of PLIPerM. Besides the advantages of a software product line, our approach can handle ontology evolution and keep all related assets in a consistent state. Other advantages include the ability to configure Jadex BDI agents for different purpose and to enhance agent intelligence by adding logic reasoning capabilities indirectly to agent beliefs.

Forecasting of Busy Telephone Traffic Based on Wavelet Transform and ARIMA-LSSVM

Weishan He,Xizhong Qin,Zhenhong Jia,Chun Chang,Chuanling Cao 보안공학연구지원센터 2014 International Journal of Smart Home Vol.8 No.4

Candy packaging design

Xiao Weishan 한국콘텐츠학회 2019 ICCC International Digital Design Invitation Exhib Vol.2019 No.12

Candy packaging design

Xiao Weishan 한국콘텐츠학회 2019 한국콘텐츠학회 ICCC 논문집 Vol.2019 No.12

Business-Driven Process Fragment Selections in RESTful Business Processes

Qinghua Lu,Xiwei Xu,Weishan Zhang,Liming Zhu,Shanshan Li 보안공학연구지원센터(IJUNESST) 2015 International Journal of u- and e- Service, Scienc Vol.8 No.1

Past work showed that runtime adaptability of business processes can be improved by applying Representational State Transfer (REST) to design and implementation of business processes. However, the existing solutions for RESTful business processes (RESTfulBP) were focused on manual selection of process fragments to be composed at runtime. In this paper, we propose solutions that enable semi-automatic selection of process fragment at each decision-making point of RESTfulBP. The new built-in middleware MiniZnMASC can provide user based process fragment advice to knowledge workers in ways that achieve better overall business value while satisfying all existing constraints. In addition, we redesign the architecture of RESTfulBP in order to allow the business-driven decision-making solutions. The solutions are evaluated for feasibility, functional correctness, business benefits, and performance.

Experimental study on two types of newbeam-to-column connections

Hongwei Ma,Weishan Jiang,조종두 국제구조공학회 2011 Steel and Composite Structures, An International J Vol.11 No.4

The new structure consisting of continuous compound spiral hoop reinforced concrete (CCSHRC)column and steel concrete composite (SCC) beam has both the advantages of steel structures and concrete structures. Two types of beam-to-column connections applied in this structural system are presented in this paper. The connection details are as follows: the main bars in beam concrete pass through the core zone for both types of connections. For connecting bar connection, the steel I-beam webs are connected by bolts to a steel plate passing through the joint while the top and bottom flanges of the beams are connected by four straight and two X-shaped bars. For bolted end-plate connection, the steel I-beam webs are connected by stiffenedextended end-plates and eight long shank bolts passing through the core zone. In order to study the seismic behaviour and failure mechanisms of the connections, quasi-static tests were conducted on both types of full-scale connection subassemblies and core zone specimens. The load-drift hysteresis loops show a plateau for the connecting bar connection while they are excellent plump for bolted end-plate connection. The shear capacity formulas of both types of connections are presented and the values calculated by the formula agree well with the test results.

Genetic and antigenic characterization of fragments of the pheasant immunoglobulin Y heavy chain constant region

Jing Zhai,Weishan Chang,Zhenzhen Zhai,Xingliang Ma,Lingling Yang,Jinfeng Ti,Daozhen Song,Shijun Fu,Dapeng Li 한국유전학회 2016 Genes & Genomics Vol.38 No.8

Few studies have attempted to characterize the pheasant (Phasianus colchicus) immunoglobulin Y (IgY) heavy chain constant region. In the present study, fragments of the pheasant IgY heavy chain constant region were cloned, analyzed, and expressed. The cross-reactivity of IgY or immunoglobulin G (IgG)s with antigens from other vertebrate species was determined using dot-enzymelinked immunosorbent assay and western blot analysis. Five peptides of the pheasant IgY heavy chain constant region were synthesized to determine its immunoregulatory activity in vitro. The IgY heavy chain constant region from pheasant showed the highest homology with that from chicken (71.2 %) and duck (49.1 %). Phylogenetic analysis for IgY showed that pheasant was closely related to chicken and duck than to any other analyzed vertebrate species. The rabbit anti-chicken IgG showed immunologic cross-reactivity with recombinant proteins of the pheasant IgY heavy chain constant region. Four peptides were able to induce significant up-regulation of interleukin (IL)-1b, IL-4, and interferon-c in chicken peripheral blood lymphocytes, suggesting a new role of avian IgY in immune regulation.

Study on seismic performance of connection joint between prefabricated prestressed concrete beams and high strength reinforcement-confined concrete columns

Haotian Jiang,Qingning Li,Weishan Jiang,De-Yi Zhang 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.21 No.2

As the common cast-in-place construction works fails to meet the enormous construction demand under rapid economic growth, the development of prefabricated structure instead becomes increasingly promising in China. For the prefabricated structure, its load carrying connection joint play a key role in maintaining the structural integrity. Therefore, a novel end plate bolt connecting joint between fully prefabricated pre-stressed concrete beam and highstrength reinforcement-confined concrete column was proposed. Under action of low cycle repeated horizontal loadings, comparative tests are conducted on 6 prefabricated pre-stressed intermediate joint specimens and 1 cast-inplace joint specimen to obtain the specimen failure modes, hysteresis curves, skeleton curves, ductility factor, stiffness degradation and energy dissipation capacity and other seismic indicators, and the seismic characteristics of the new-type prefabricated beam-column connecting joint are determined. The test results show that all the specimens for end plate bolt connecting joint between fully prefabricated pre-stressed concrete beam and highstrength reinforcement-confined concrete column have realized the design objectives of strong column weak beam. The hysteretic curves for specimens are good, indicating desirable ductility and energy dissipation capacity and seismic performances, and the research results provide theoretical basis and technical support for the promotion and application of prefabricated assembly frames in the earthquake zone.

Pseudo-dynamic test of the steel frame - Shear wall with prefabricated floor structure

Qingning Li,Chun Han,Weishan Jiang,Junhong Yin,Lei Yan 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.20 No.2

Seismic behavior of new composite structural system with a fabricated floor was studied. A two-bay and three-story structural model with the scale ratio of 1/4 was consequently designed. Based on the proposed model, multiple factors including energy dissipation capacity, stiffness degradation and deformation performance were analyzed through equivalent single degree of freedom pseudo-dynamic test with different earthquake levels. The results show that, structural integrity as well as the effective transmission of the horizontal force can be ensured by additional X bracing at the bottom of the rigidity of the floor without concrete topping. It is proved that the cast-in-place floor in areas with high seismic intensity can be replaced by the prefabricated floor without pouring surface layer. The results provide a reliable theoretical basis for the seismic design of the similar structural systems in engineering application.