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The rise in demand and high utilization of fuel causes severe environmental threat for the nations on the globe. Rapid burning potential of hydrogen produces enormous amount of thrust, and it is mainly owing to wide flame range and less onset of ignition.

The significant contribution of hydrogen as fuel has been explored by several researchers around the globe recently to use in aviation sector owing to its eco-friendly nature. Hydrogen is a safe and clean fuel, and it can be generated from several sources. The effects of addition on hydrogen on gas turbine on combustion characteristics and emission concentration level on atmosphere have been reviewed in this paper.

Incorporation of hydrogen is effective reducing nitrous oxide emission, high calorific value and flame less combustion. Addition of hydrogen to higher proportions enhances the combustion performance, minimizing the setbacks of conventional fuel and meets the specified standards on emission.

From the literature review, the comparative study on hydrogen with other fuel is explained. This paper concludes that addition of hydrogen in fuel enhances the performance of combustion on gas turbine engine along with significant reduction in emission levels.

This paper aims to present a reverse engineering (RE) approach for three-dimensional (3D) model reconstruction and fast prototyping (FP) of broken chess pieces.

A case study involving a broken chess piece was selected to demonstrate the effectiveness of the proposed unconventional RE approach. Initially, a laser 3D scanner was used to acquire a (non-uniform rational B-spline) surface model of the object, which was then processed to develop a parametric computer aided design (CAD) model combined with geometric design and tolerancing (GD&T) technique for evaluation and then for FP of the part using a computer numerical controlled (CNC) machine.

The effectiveness of the proposed approach for reconstruction and FP of rotational parts was ascertained through a sample part. The study demonstrates non-contact data acquisition technologies such as 3D laser scanners together with RE systems can support to capture the entire part geometry that was broken/worn and developed quickly through the application of computer aided manufacturing principles and a CNC machine. The results indicate that design communication, customer involvement and FP can be efficiently accomplished by means of an integrated RE workflow combined with rapid product development tools and techniques.

This research established a RE approach for the acquisition of broken/worn part data and the development of parametric CAD models. Then, the developed 3D CAD model was inspected for accuracy by means of the GD&T approach and rapidly developed using a CNC machine. Further, the proposed RE led FP approach can provide solutions to similar industrial situations wherein agility in the product design and development process is necessary to produce physical samples and functional replacement parts for aging systems in a short turnaround time.

This study explores the immobilisation of enzymes within porous catalysts of various geometries, including spheres, cylinders and flat pellets. The objective is to understand the irreversible Michaelis-Menten kinetic process within immobilised enzymes through advanced mathematical modelling.

Mathematical models were developed based on reaction-diffusion equations incorporating nonlinear variables associated with Michaelis-Menten kinetics. This research introduces fractional derivatives to investigate enzyme reaction kinetics, addressing a significant gap in the existing literature. A novel approximation method, based on the independent polynomials of the complete bipartite graph, is employed to explore solutions for substrate concentration and effectiveness factor across a spectrum of parameter values. The analytical solutions generated through the bipartite polynomial approximation method (BPAM) are rigorously tested against established methods, including the Bernoulli wavelet method (BWM), Taylor series method (TSM), Adomian decomposition method (ADM) and fourth-order Runge-Kutta method (RKM).

The study identifies two main findings. Firstly, the behaviour of dimensionless substrate concentration with distance is analysed for planar, cylindrical and spherical catalysts using both integer and fractional order Michaelis-Menten modelling. Secondly, the research investigates the variability of the dimensionless effectiveness factor with the Thiele modulus.

The study primarily focuses on mathematical modelling and theoretical analysis, with limited experimental validation. Future research should involve more extensive experimental verification to corroborate the findings. Additionally, the study assumes ideal conditions and uniform catalyst properties, which may not fully reflect real-world complexities. Incorporating factors such as mass transfer limitations, non-uniform catalyst structures and enzyme deactivation kinetics could enhance the model’s accuracy and broaden its applicability. Furthermore, extending the analysis to include multi-enzyme systems and complex reaction networks would provide a more comprehensive understanding of biocatalytic processes.

The validated bipartite polynomial approximation method presents a practical tool for optimizing enzyme reactor design and operation in industrial settings. By accurately predicting substrate concentration and effectiveness factor, this approach enables efficient utilization of immobilised enzymes within porous catalysts. Implementation of these findings can lead to enhanced process efficiency, reduced operating costs and improved product yields in various biocatalytic applications such as pharmaceuticals, food processing and biofuel production. Additionally, this research fosters innovation in enzyme immobilisation techniques, offering practical insights for engineers and researchers striving to develop sustainable and economically viable bioprocesses.

The advancement of enzyme immobilisation techniques holds promise for addressing societal challenges such as sustainable production, environmental protection and healthcare. By enabling more efficient biocatalytic processes, this research contributes to reducing industrial waste, minimizing energy consumption and enhancing access to pharmaceuticals and bio-based products. Moreover, the development of eco-friendly manufacturing practices through biocatalysis aligns with global efforts towards sustainability and mitigating climate change. The widespread adoption of these technologies can foster a more environmentally conscious society while stimulating economic growth and innovation in biotechnology and related industries.

This study offers a pioneering approximation method using the independent polynomials of the complete bipartite graph to investigate enzyme reaction kinetics. The comprehensive validation of this method through comparison with established solution techniques ensures its reliability and accuracy. The findings hold promise for advancing the field of biocatalysts and provide valuable insights for designing efficient enzyme reactors.

The quality improvement in colonoscopy study was a region wide service improvement study to improve adenoma detection rate at colonoscopy by implementing evidence into routine colonoscopy practice. Implementing evidence into clinical practice can be challenging. The purpose of this paper is to perform a qualitative interview study to evaluate factors that influenced implementation within the study.

Semi-structured interviews were conducted with staff in endoscopy units taking part in the quality improvement in colonoscopy study, after study completion. Units and interviewees were purposefully sampled to ensure a range of experiences was represented. Interviews were conducted with 11 participants.

Key themes influencing uptake of the quality improvement in colonoscopy evidence bundle included time, study promotion, training, engagement, positive outcomes and modifications. Areas within themes were increased awareness of quality in colonoscopy (QIC), emphasis on withdrawal time and empowerment of endoscopy nurses to encourage the use of quality measures were positive outcomes of the study. The simple, visible study posters were reported as useful in aiding study promotion. Feedback sessions improved engagement. Challenges included difficulty arranging set-up meetings and engaging certain speciality groups.

This evaluation suggests that methods to implement evidence into clinical practice should include identification and empowerment of team members who can positively influence engagement, simple, visible reminders and feedback. Emphasis on timing of meetings and strategies to engage speciality groups should also be given consideration. Qualitative evaluations can provide important insights into why quality improvement initiatives are successful or not, across different sites.

What leads to new product success (NPS) is a very complex issue. Although prior research widely demonstrates that entrepreneurial orientation (EO) is a determinant for NPS and environmental turbulence is a form of unpredictability which impacts on the success of a product, little research has been conducted to examine if and to what extent environmental turbulence induces the EO behaviors of a firm and how these behaviors contribute to NPS. The paper aims to discuss these issues.

This study, which used data collected from 244 China-based electronics manufacturers, proposed and tested the theoretical relationships among the three constructs in the context of the electronics industry in China.

Results revealed that the three dimensions of EO (innovativeness, proactiveness and risk-taking) drive NPS. Environmental turbulence strongly influenced all three dimensions of EO, though its influence on NPS was mixed as there existed a strong negative but insignificant direct association between the two constructs. Innovativeness, which was found to be most effective in driving NPS in the EO and NPS relationship, was relatively less responsive to environmental turbulence than proactiveness. The study confirmed the postulated role of environmental turbulence in inducing the EO behaviors of a firm, signaling environmental turbulence, if tactfully leveraged, can play a positive role in new product development (NPD).

The study is quantitative using data emanating from the electronics manufacturing industry in China, further empirical study would be useful to verify and complement the results in other industries and other countries.

This study contributes to the scholarly inquiry of EO and NPD by exploring the influences of environmental turbulence and EO on NPS. As environmental turbulence induces EO and EO mediates the relationship between environmental turbulence and NPS, simultaneous consideration of these two constructs can lend useful insight into their joint impacts on NPD. Theoretical and managerial implications were examined and policy implications, especially the practicality of the findings to policymakers in China, were discussed.

The purpose of this paper is to get the insulating polyurethane (PU) as conductive type polymer by compositing with oligoanilines, namely, tetraaniline (TANi) with an implication of its use as anti-corrosion coating material.

Water dispersion of PU was prepared and used as a host material for TANi for composite formulation.

The composites are very useful as anti-corrosion coating on mild steel as evident from Tafel polarisation studies.

The solubility of TANi is limited in other organic solvents; because of this, a high-boiling solvent like N-methyl-2-pyrrolidone (NMP) is used.

It can be used as a good anti-corrosion coating on mild steel. Apart from anti-corrosion material, this can be used as conductive-based sensor material and also electrostatic dissipation (ESD) or electromagnetic interference (EMI) shield.

The work is original.

Entrepreneurial orientation (EO) has emerged as a core concept in the field of entrepreneurship. Yet, there continue to be questions about the nature of EO and how best to conceptualize and measure it. This chapter makes the case that EO has grown beyond its roots as a firm-level unidimensional strategy construct and that a new multidimensional version of EO is needed to capture the diverse manifestations and venues for entrepreneurial activity that are now evident around the world – global entrepreneurial orientation (GEO). Building on the five-dimension multidimensional view of EO set forth when Lumpkin and Dess (1996) extended the work of Miller (1983) and Covin and Slevin (1989, 1991), the chapter offers an updated definition of EO and a fresh interpretation of why EO matters theoretically. Despite earnest efforts to reconcile the different approaches to EO, in order to move the study of EO and the theoretical conversation about it forward, we maintain that as a group of scholars and a field, we need to acknowledge that two different versions of EO have emerged. Given that, we consider original approaches to measuring EO, evaluate formative measurement models, consider multiple levels of analysis, call for renewed attention to EO configurations, and discuss whether there is a theory of EO.

Using Taiwanese enterprises that produce computer and consumer electronics products as case subjects, this study aims to explore the effective product innovation strategies applied to cope with competition in the global market and develop a competitive advantage. The product design strategies and methods of companies that used different types of innovation strategies were then analyzed. Finally, a mapping framework for product innovation and design strategies was proposed for enterprises in the computer and consumer electronics industry in Taiwan.

The two stages of this study were a questionnaire survey and case studies. Stage 1: A questionnaire survey and literature review were performed to explore the innovation strategies used by companies in the Taiwanese computer and consumer electronics industry. The purpose of the literature review was to determine the definitions and content of innovation strategies. Stage 2: Design and R&D managers were interviewed to explore the practical design strategies and approaches to product design in the industry.

These four innovation strategies and ways of product design are closely related to the scale, business type and product development conditions in enterprises. Notably, different innovation strategies have different approaches to product design. Generally, product design emphasizes “new experience” in aggressive innovation enterprises, “new value” in market innovation enterprises, “new service” in technical innovation enterprises and “new positioning” in opportunity innovation enterprises. The findings of this study provide a reference for product R&D and design in enterprises.

In recent years, the global market of computer and consumer electronic products has been fiercely competitive. Therefore, only enterprises that can innovate, respond rapidly and maintain advantages in product design can survive in the market. Hopefully, this case study of companies in the Taiwan computer and consumer electronic industry can provide a reference for product R&D and design. The findings of this study provide a reference for product R&D and design in enterprises, especially the Chinese market.

The purpose of this paper is to conceptualise and develop various phases of agile product development cycle (PDC) for a manufacturing organization.

The literature on agile manufacturing (AM) has been reviewed. Agile PDC has been conceptualised and the implementation study has been conducted in a rotary switches manufacturing organisation. The various phases of agile PDC have been performed and the inferences have been derived.

The outcome of this research indicated the power of agile PDC as an enabler of agility in contemporary manufacturing organisations.

The developed PDC has been test implemented in a single manufacturing organization. However, the model could be extended to several organisations.

The various phases of agile PDC have been systematically explored and the practical inferences have been derived.

The conceptualisation and development of various phases of agile PDC is an original contribution of the authors.

The purpose of this paper is to minimize environmental problems related to raw poultry manure application by stabilizing its nutrient and organic matter (OM) content. This can be achieved by prior digestion before its application to agricultural soils.

In the present study, changes in physicochemical and microbial properties of poultry litter were studied in order to evaluate the suitability of using the digested (stabilized) product for soil amendment. The poultry litter was digested in autothermal thermophilic aerobic digestor (ATAD) where organic solids were degraded and the heat released during the microbial degradation was used to maintain the thermophilic temperatures ( < 50ºC) at a hydraulic retention time of about 3 d.

Results of this study showed that the poultry litter undergoes physicochemical and microbial changes similar to other digestion systems; these changes include self-heating, relative increase in Cu, Zn, Fe, Mn, P, K and NO₃-N and decrease in microbial population numbers, C, OM and NH₄-N contents.

ATAD is an effective method for the conversion of poultry litter into organic fertilizer, which can be readily applied to the agriculture land. ATAD is an eco-friendly, cost effective method which also reduces the length of stabilization.