Analysis of the Coupling Coefficient in Inductive Energy Transfer Systems

In wireless energy transfer systems, the energy is transferred from a power source to an electrical load without the need of physical connections. In this scope, inductive links have been widely studied as a way of implementing these systems. Although high efficiency can be achieved when the system is operating in a static state, it can drastically decrease if changes in the relative position and in the coupling coefficient between the coils occur. In this paper, we analyze the coupling coefficient as a function of the distance between two planar and coaxial coils in wireless energy transfer systems. A simple equation is derived from Neumann’s equation for mutual inductance, which is then used to calculate the coupling coefficient. The coupling coefficient is computed using CST Microwave Studio and compared to calculation and experimental results for two coils with an excitation signal of up to 10 MHz. The results showed that the equation presents good accuracy for geometric parameters that do not lead the solution of the elliptic integral of the first kind to infinity

Exploring the advantages of content management systems for managing engineering knowledge in product-service systems

Knowledge management has drawn great interest in manufacturing industries and related business practices. With the requirement for better managing the massive data and knowledge generated during different lifecycle stages of products, manufacturing industries are looking for effective way to acquire, save, process and share knowledge from and between different stakeholders, so as to make appropriate decisions and continuously improve business operations. Current (conventional) engineering information systems in manufacturing applications, such as Enterprise Resource Planning, Computerized Maintenance Management and Product Lifecycle Management Systems are difficult to inter-operate and integrate with each other when dealing with growing amount of data and knowledge as a product goes through its lifecycle stages. As informational and communication technologies (ICT) are being developed much faster in other sectors such as financial, business and social media, it is important to explore the potential of latest ICT tools predominantly used in those sectors for engineering applications and identify any advantages and benefits over the conventional engineering information systems. This paper presents an experiment in using an Open Source Content Management System, for the implementation of a collaborative product-service system for the planning and execution of maintenance and service operations of high-value complex numerical control machine tools in advanced manufacturing systems

KAJIAN KESESUAIAN LOKASI INDUSTRI BERDASARKAN KARAKTERISTIK INDUSTRI DI KOTA SALATIGA

Perkembangan kawasan industri di Indonesia hingga saat ini belum sepenuhnya terkendali dan mempunyai kesesuaian lokasi yang tepat. Tidak sedikit industri dibangun tanpa proses perencanaan yang matang. Akibatnya, banyak lahan produksi yang beralih menjadi lokasi industri sehingga mengancam kestabilan produktivitas pangan. Banyak lokasi industri yang menggangu tata kota baik dari segi fungsi maupun keindahan dan kenyamanan. Selain itu juga tingkat pencemaran limbah industri yang menimbulkan dampak negatif bagi masyarakat sekitar. Berbagai macam kegiatan industri akan mempengaruhi kesempatan kegiatan kerja dan pendapatan masyarakat setempat. Lokasi dan pembangunan yang direncanakan secara tepat akan tetap menjaga kualitas air, udara, dan lingkungan alam

TABSOLARⓇ – a novel approach of thermo-active (solar) building systems based on ultra-high performance concrete (UHPC)

TABSOLARⓇ elements are novel (solar) thermal components made from ultra-high performance concrete (UHPC) which can be used as designable glazed or unglazed façade cladding elements or thermo-active building systems for heating and/or cooling. They are produced with an innovative production technology which is developed in a current research project together with appropriate system concepts. In order to simplify the system design process and visualize possible TABSOLARⓇ façades on site, new software tools are being developed. Finally, a demonstration façade will be installed on a renovated two-family residential building. The ongoing interactive design process of this first use case is an important part of the project and the overall TABSOLARⓇ concept

Wireless Communications at 60 GHz: A Single-Chip Solution on CMOS Technology

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The Challenges of Adopting PLM Tools Involving Diversified Technologies in Today’s Automotive Supplier Business

In order to reduce product development (PD) costs and duration, PD cycles are being accelerated in order to reduce the time to market and satisfy the end customer needs. Another key challenge in PD today, is product diversification in the technologies used, requiring improved collaboration amongst local and dispersed multi disciple PD teams. A main stream tool that aids and support engineers in PD to collaborate and share information/knowledge is Product Lifecycle Management (PLM). This research explores the benefits and requirements of implementing a PLM system for a PD and manufacturing company within the automotive supply chain. This paper first provides a brief background of the subject area, followed by an explanation of the initial industrial investigation for the implementation of a PLM system, from which investigation the resulting conclusions and recommendations are presented as the building blocks of the implementation project

The Potential Selective Oncolytic Effects of Newcastle Disease Virus (NDV) on Cervical and Colon Cancer Cell Lines

The mesogenic and velogenic strains of the avian Newcastle Disease Viruses (NDV) have been investigated for use in cancer virotherapy. However, despite its promising results, these strains have the potential to cause outbreaks leading to morbidity and mortality in large numbers of avians that can devastate the poultry industry. Therefore, there is a growing interest towards the use of lentogenic strains such as NDV LaSota vaccine strain for virotherapy. This study investigated the oncolytic potential of the NDV LaSota strain on colorectal cancer (HT29) and cervical cancer (HeLa) cell lines. The NDV LaSota stain was propagated in pathogen free embryonated chicken eggs and quantified using a hemagglutination assay. The oncolytic activity was evaluated by comparison of HT29 and HeLa cell lines to the non-cancerous human embryonic kidney (HEK293) cell line using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) viability assay. The highest NDV concentration of 16 HAU was found to reduce the viability of HT29, HeLa, and HEK293 cell lines to 42±3% (p = 0.0001), 49±12% (p = 0.0009), and 77±5% (p = 0.007), respectively, indicating its potential selective cytotoxicity, as supported by the disturbed cell morphology.  The NDV LaSota strain exhibits a potential selective oncolytic activity towards cancer cell lines, thus may serve as an interesting candidate for virotherapy against colorectal and cervical cancer