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Articles 1 - 30 of 99

Full-Text Articles in Nanoscience and Nanotechnology

Nanonickel Catalyst Reinforced With Silicate For Methane Decomposition To Produce Hydrogen And Nanocarbon: Synthesis By Co-Precipitation Cum Modified Stöber Method, Upm Ashik, Wma Wan Daud May 2015

Nanonickel Catalyst Reinforced With Silicate For Methane Decomposition To Produce Hydrogen And Nanocarbon: Synthesis By Co-Precipitation Cum Modified Stöber Method, Upm Ashik, Wma Wan Daud

upm ashik

Co-precipitation cum modified Stöber method is a continuous process avoiding application of higher temperature treatment before supporting nanometal with SiO2, irrespective of pre-preparation methods. We have conducted the co-precipitation process without undertaking calcination under air in order to avoid even a partial particle agglomeration and hence maintained average particle size [similar]30 nm after enforcing with SiO2. This is the first report adopting such an unceasing preparation for preparing metal/silicate nanostructures. Furthermore, n-Ni/SiO2 nanostructured catalysts were used for thermocatalytic decomposition of methane to produce hydrogen and carbon nanotubes. The catalyst was found to be very stable and the ...


Is There A Relationship Between Research Sponsorship And Publication Impact? An Analysis Of Funding Acknowledgments In Nanotechnology Papers, Jue Wang, Philip Shapira Feb 2015

Is There A Relationship Between Research Sponsorship And Publication Impact? An Analysis Of Funding Acknowledgments In Nanotechnology Papers, Jue Wang, Philip Shapira

Philip Shapira

This study analyzes funding acknowledgments in scientific papers to investigate relationships between research sponsorship and publication impacts. We identify acknowledgments to research sponsors for nanotechnology papers published in the Web of Science during a one-year sample period. We examine the citations accrued by these papers and the journal impact factors of their publication titles. The results show that publications from grant sponsored research exhibit higher impacts in terms of both journal ranking and citation counts than research that is not grant sponsored. We discuss the method and models used, and the insights provided by this approach as well as it ...


Social Science Contributions Compared In Synthetic Biology And Nanotechnology, Philip Shapira, Jan Youtie, Yin Li Feb 2015

Social Science Contributions Compared In Synthetic Biology And Nanotechnology, Philip Shapira, Jan Youtie, Yin Li

Philip Shapira

With growing attention to societal issues and implications of synthetic biology, we investigate sources of social science publication knowledge in synthetic biology and probe what might be learned by comparison with earlier rounds of social science research in nanotechnology. “Social science” research is broadly defined to include publications in conventional social science as well as humanities, law, ethics, business, and policy fields. We examine the knowledge clusters underpinning social science publications in nanotechnology and synthetic biology using a methodology based on the analysis of cited references. Our analysis finds that social science research in synthetic biology already has traction and ...


Nonlinear Vibration Analysis Of Nonlocal Nanowires, Hassan Askari Aug 2014

Nonlinear Vibration Analysis Of Nonlocal Nanowires, Hassan Askari


No abstract provided.


Criterion For An Oscillatory Charged Jet During The Bubble Spinning Process, Ji-Huan He, H.Y. Kong Jan 2014

Criterion For An Oscillatory Charged Jet During The Bubble Spinning Process, Ji-Huan He, H.Y. Kong

Ji-Huan He

The oscillatory diameter of the charged jet during the bubble electrospinning results in beads on the obtained nanofibers. We demonstrate that the applied voltage and the initial flow rate of the jet are the crucial parameters that are necessary to control morphology of the nanofibers. We also find that there is a criterion for production of smooth nanofibers without beads. The theory developed in this paper can be extended to the classical electrospinning and the blown bubble-spinning.


Fractional Calculus For Nanoscale Flow And Heat Transfer, Hong-Yan Liu, Ji-Huan He, Zheng-Biao Li Jan 2014

Fractional Calculus For Nanoscale Flow And Heat Transfer, Hong-Yan Liu, Ji-Huan He, Zheng-Biao Li

Ji-Huan He

Purpose – Academic and industrial researches on nanoscale flows and heat transfers are an area of increasing global interest, where fascinating phenomena are always observed, e.g. admirable water or air permeation and remarkable thermal conductivity. The purpose of this paper is to reveal the phenomena by the fractional calculus. Design/methodology/approach – This paper begins with the continuum assumption in conventional theories, and then the fractional Gauss’ divergence theorems are used to derive fractional differential equations in fractal media. Fractional derivatives are introduced heuristically by the variational iteration method, and fractal derivatives are explained geometrically. Some effective analytical approaches to ...


Connecting Research On Social Issues In Nanotechnology: The Center For Nanotechnology In Society At Arizona State University, Jan Youtie, Philip Shapira Jan 2014

Connecting Research On Social Issues In Nanotechnology: The Center For Nanotechnology In Society At Arizona State University, Jan Youtie, Philip Shapira

Philip Shapira

Central to the emergence of new research topics is the creation of a research network. This paper looks at the creation of a network of researchers of social issues in nanotechnology and the role of the Center for Nanotechnology in Society at Arizona State University (CNS-ASU) in the creation of this network. While there has been US investment in societal research on nanotechnology, a debate exists about the extent to which a research community has been created through these investments. This paper uses three approaches to examine the extent to which CNS-ASU is associated with the development of a research ...


Cfp: Handbook Of Research On Technological Applications And Innovation For Economic Development, Deogratias Harorimana Mr Mar 2013

Cfp: Handbook Of Research On Technological Applications And Innovation For Economic Development, Deogratias Harorimana Mr

Dr Deogratias Harorimana

The innovation in the 21st century goes significantly beyond the high-tech picture driven by small or large industry clusters in a specific region-typically Silicon Valley and M4Corridor. The future of innovation will lie within knowledge management and seamless technological applications. These will be supported by planned funding strategies, possibly with clients as drivers of the innovation. This view seems to be supported by the UK government “Technology and Innovation Futures” (2011); the USA government (2011), study into which leading scholars concede that the future innovation and technological applications for economic growth will include products and processes, improvements in areas such ...


Functions And Future Applications Of F1 Atpase As Nanobioengine - Powering The Nanoworld!, Sandip S. Magdum Jan 2013

Functions And Future Applications Of F1 Atpase As Nanobioengine - Powering The Nanoworld!, Sandip S. Magdum

Sandip S. Magdum

Recent nanotechnological revolution mandates astonishing imagination about future nanoworld. Nature has ability to create nanobiomolecules which can function in extraordinary way which can be used to produce nano hybrid systems. The opportunity to use such nanobiomolecules in combination of nanomechanical systems for development of novel nano hybrid systems for their various applications needs to explore in further nanotechnological development. F1 ATPase is a subunit of ATP synthase, which is one of the biomolecular structure works on the plasma membrane of the living cell. The reversible function of F1 ATPase gives a counterclockwise rotation of γ shaft by hydrolyzing ATP and ...


Tem Analysis As A Tooll For Toxicology Assessment Of Occupational Exposure To Airborne Nanoparticles From Welding, João F. Gomes Jan 2013

Tem Analysis As A Tooll For Toxicology Assessment Of Occupational Exposure To Airborne Nanoparticles From Welding, João F. Gomes

João F Gomes

No abstract provided.


Notice On A Methodology For Characterizing Emissions Of Ultrafine Particles/Nanoparticles In Microenvironments, João F. Gomes Jan 2013

Notice On A Methodology For Characterizing Emissions Of Ultrafine Particles/Nanoparticles In Microenvironments, João F. Gomes

João F Gomes

No abstract provided.


Biodiesel Production From Waste Trying Oils Over Lime Catalysts, João F. Gomes Jan 2013

Biodiesel Production From Waste Trying Oils Over Lime Catalysts, João F. Gomes

João F Gomes

No abstract provided.


Research Inequality In Nanomedicine, Thomas Woodson Nov 2012

Research Inequality In Nanomedicine, Thomas Woodson

Thomas Woodson

The 10-90 gap is an idea in the healthcare literature that less than 10%of all research funding goes to solving health problems that are 90%of the global disease burden. This paper examines whether there is inequality in nanotechnology healthcare research (nanomedicine). To understand the inequality in nanomedicine, I conducted a bibliometric review of Web of Science and PubMed databases. Overall there is not large inequality in nanomedicine research. The bibliometric analysis shows that most nanomedicine research is done in high income countries, but their research portfolios extend beyond rich world diseases like Alzheimer’s disease and diabetes to ...


How Can Pacific Island Economies Benefits From The Advent Of Ict’S – Review Of Best Practices In Education, Deogratias Harorimana Sr Oct 2012

How Can Pacific Island Economies Benefits From The Advent Of Ict’S – Review Of Best Practices In Education, Deogratias Harorimana Sr

Dr Deogratias Harorimana

This paper explored implementation and use of information and communication technologies in Fiji, in order to gain insight into recent government initiatives to introduce computers and other ICTs for the community of Fiji. The focus of this paper in that it provided the framework for an in-depth exploration of e-learning centers around the country and the benefits from the advent of ICT’s in e-learning community centers in Fiji. Areas concentrated on are outcome of ICT’s in formal education to students and community as a whole in areas of agriculture, health, environment and infrastructure etc. The research sought understanding ...


Temperature Dependence Anomalous Dielectric Relaxation In Co Doped Zno Nanoparticles, Sajid Ali Ansari Sep 2012

Temperature Dependence Anomalous Dielectric Relaxation In Co Doped Zno Nanoparticles, Sajid Ali Ansari

Sajid Ali Ansari

We have reported temperature and frequency dependence of dielectric behaviour of nanocrystalline Zn1-xCoxO (x = 0.0, 0.01, 0.05 and 0.1) samples prepared by gel-combustion method. The synthesized samples were examined by x-ray diffraction (XRD), scanning electron microscopy (SEM) and LCR-meter, respectively. The XRD analysis reveals that ZnO has a hexagonal (wurtzite) crystal structure. The morphology and size of the nanoparticles (∼10-25 nm) were observed by SEM for 5% Co doped ZnO sample. In dielectric properties, complex permittivity (ɛ* = ɛ’-jɛ”), loss tangent (tanδ) and ac conductivity (σac) in the frequency range 75 kHz - 5 MHz were analyzed ...


Technical Assistance, Knowledge Gatekeeping And Indigenous Knowledge: Re-Thinking The International Development Practice, Deogratias Harorimana Sr Sep 2012

Technical Assistance, Knowledge Gatekeeping And Indigenous Knowledge: Re-Thinking The International Development Practice, Deogratias Harorimana Sr

Dr Deogratias Harorimana

This paper presents results from a multi-disciplinary conceptual analysis of development theory and practice. It reviews issues raised and proposes a shift in the epistemology of possession towards an epistemology of practice which is guided by the following aspects (1) The consideration of the learning culture of parties involved, (2) the ability and willingness for decontextualisation of the knowledge by the source and (3) the ability to embedded it by recipients (embededness ), (4) the importance that is attached to knowledge of the host country as reflected through (5) Similarity in culture, values, understanding of context and knowledge bases; (6) the ...


Mis Mock Questions (Why Mis In Corporate Turbulant Times), Deogratias Harorimana Sr May 2012

Mis Mock Questions (Why Mis In Corporate Turbulant Times), Deogratias Harorimana Sr

Dr Deogratias Harorimana

With corporate strategy becoming more and more dependent on speed,focus, innovation and strategy, what can MIS do? and what should be MIS role ? what is the relationship between Corporate Strategy KPI and MIS? These questions are answered in an MBA Management Information Systems at USP. This programme is delivered across the entire Pacific region through the Graduate School of Business. It is my privilege to post here few questions that students who attended one of the course in Nadi, at Tanoa International Hotel had to answer in one of the Quiz test.


Economic Benefits Analysis Of Mining Industries In Png And Solomon Islands, Deogratias Harorimana Sr Apr 2012

Economic Benefits Analysis Of Mining Industries In Png And Solomon Islands, Deogratias Harorimana Sr

Dr Deogratias Harorimana

This paper discusses mining and mineral operations in the two countries Papua New Guinea and Solomon Islands with regards to its contribution to the overall Gross domestic Product and the economic development of each country.

Our finding shows that mining is an excellent contributor to economic growth and development as in the case of Papua New Guinea.Tax revenue from PNG Mining industries contributions to the PNG fiscal basket remains strong and growing steadily. The mining and minerals tax revenue remains an important contributor to the government fiscal budget over the last 10 years. This has been a strong contributor ...


Understanding Economics Of The Pacific Island Nations: Issues And Cases, Deogratias Harorimana Sr Apr 2012

Understanding Economics Of The Pacific Island Nations: Issues And Cases, Deogratias Harorimana Sr

Dr Deogratias Harorimana

No abstract provided.


Job Creation In The Tuna Industry Of The Solomon Islands- A Tentative Strategic Analysis, Deogratias Harorimana Sr Apr 2012

Job Creation In The Tuna Industry Of The Solomon Islands- A Tentative Strategic Analysis, Deogratias Harorimana Sr

Dr Deogratias Harorimana

The principal objective of this paper is to review the current Tuna Fisheries Policies in the Solomon Islands with a view to proposing strategies that will maximize Job creation while at the same time address the issues that currently exist in this sector. Although the Tuna Industry’s contribution to GDP is quite significant, the Solomon Island Government (SIG) gets little or close to nothing out of it in the form of revenue and Job creation with the majority of vessels being foreign owned and fishing license fees amongst the lowest in the Pacific. SOLTAI which is partly owned by ...


Review Of Solomon Islands’ Policies And Programs To Promote Private Sector Development And Small Business, Deogratias Harorimana Sr Apr 2012

Review Of Solomon Islands’ Policies And Programs To Promote Private Sector Development And Small Business, Deogratias Harorimana Sr

Dr Deogratias Harorimana

Solomon Islands is a nation with vast resources with huge potential to excel economically if proper business atmosphere is provided for both private sector development and small and medium enterprises entrepreneurship. Conducive policies that, not only, a mere statement but is broken down to workable strategies with quantitative expected outcome with a strong mentoring mechanism is very important. Previous governments have continuously ignored the importance of having small business policies until lately when NCRA government came up with a set of policies that strategically addresses the significance of small and medium businesses. However, notwithstanding foreign investment is very important in ...


Antimicrobial Activity Of Metal Oxide Nanoparticles Against Gram-Positive And Gram-Negative Bacteria: A Comparative Study, Mohammad Oves Feb 2012

Antimicrobial Activity Of Metal Oxide Nanoparticles Against Gram-Positive And Gram-Negative Bacteria: A Comparative Study, Mohammad Oves

Mohammad Oves

No abstract provided.


Insights Into The Power Law Relationships That Describe Mass Deposition Rates During Electrospinning, Jonathan J. Stanger, Nick Tucker, Simon Fullick, Mathieu Sellier, Mark P. Staiger Feb 2012

Insights Into The Power Law Relationships That Describe Mass Deposition Rates During Electrospinning, Jonathan J. Stanger, Nick Tucker, Simon Fullick, Mathieu Sellier, Mark P. Staiger

Jonathan J Stanger

This work explores how in electrospinning, mass deposition rate and electric current relate to applied voltage and electrode separation, factors give a range of applied electric fields. Mass deposition rate was measured by quantifying the rate of dry fibre deposited over time. Electric current was measured using a current feedback from the high voltage supply. The deposition of fibre was observed to occur at a constant rate for deposition times of up to 30 min. Both the mass deposition rate and electric current were found to vary with the applied voltage according to a power law. The relationship between the ...


Using The Case Study Methodology In Teaching, Deogratias Harorimana Mr Jan 2012

Using The Case Study Methodology In Teaching, Deogratias Harorimana Mr

Dr Deogratias Harorimana

This paper reviews the Why, How, to use the Case Study Methods in MBA teaching. The Presentation was prepared for and delivered as part of MBA students induction Programme in the Graduate School of Business.


Manipulation Of Electrospun Fibres In Flight: The Principle Of Superposition Of Electric Fields As A Control Method, Nurfaizey A. Hamid, Jonathan J. Stanger, Nick Tucker, Andrew Wallace, Mark P. Staiger Jan 2012

Manipulation Of Electrospun Fibres In Flight: The Principle Of Superposition Of Electric Fields As A Control Method, Nurfaizey A. Hamid, Jonathan J. Stanger, Nick Tucker, Andrew Wallace, Mark P. Staiger

Jonathan J Stanger

This study investigates the magnitude of movement of the area of deposition of electrospun fibres in response to an applied auxiliary electric field. The auxiliary field is generated by two pairs of rod electrodes positioned adjacent and parallel to the line of flight of the spun fibre. The changes in shape of the deposition area and the degree of movement of the deposition area are quantified by optical scanning and image analysis. A linear response was observed between the magnitude of movement of the deposition area and voltage difference between the auxiliary and deposition electrodes. A squeezing effect which changed ...


Effect Of Temperature On Surface Tension Of A Bubble And Hierarchical Ruptured Bubbles For Nanofiber Fabrication, Ji-Huan He Jan 2012

Effect Of Temperature On Surface Tension Of A Bubble And Hierarchical Ruptured Bubbles For Nanofiber Fabrication, Ji-Huan He

Ji-Huan He

Polymer bubbles can be used to fabrication of nanofibers using the bubble electrospinning. Temperature is one of the most effective parameters to control the spinning process. Suitable choice of inner and outer temperatures results in a minimal surface tension. A bubble under electronic field will be broken to form daughter bubble cascades, which can be used for nanofiber fabrication.


The Gatekeeper And The Knowledge Environment-Who They Are, How They Work Empirical Evidences From High-Tech Manufacturing And R&D Firms, Deogratias Harorimana Jan 2012

The Gatekeeper And The Knowledge Environment-Who They Are, How They Work Empirical Evidences From High-Tech Manufacturing And R&D Firms, Deogratias Harorimana

Dr Deogratias Harorimana

Purpose of the Study: The purpose of this study was to critically study the role of the Knowledge Gatekeeper within the manufacturing and high tech selected case studies and by explaining who they are, how they work and identify and analyse the barriers to knowledge creation and knowledge sharing. Methodology: The research was guided by an inductive approach with a multiple case study strategy. Research instruments included a questionnaire and interviews from respectively 105 and 40 respondents. Findings: In the African Manufacturing context, and in absence of sophisticated technologies and highly qualified personnel, technical knowledge can be obtained from organizational ...


Review Of Economics Of Manamagement Information Systems, Deogratias Harorimana Sr Jan 2012

Review Of Economics Of Manamagement Information Systems, Deogratias Harorimana Sr

Dr Deogratias Harorimana

“Information technology is the "digital nervous system" of any business.” (Bill Gates, Chairman, Microsoft Corporation, 1997)

The way business is conducted in this era is phenomenal. Almost everything is a “click” away. The customers are satisfied, businesses are satisfied, Government is satisfied and the entire globe is gratified by the work of information technology (IT). This research discloses the several returns and shortcomings of IT, and how businesses use IT to realize their strategic goals.

The report presents discussion on two organisations, Dell Computer Corporation and Sydney Waters, which had a prosperous and disastrous implementation of IT systems respectively. The ...


Using Mis To Deliver Essential Services:Case Of Healthcare Provision Support In Fiji, Deogratias Harorimana Sr Jan 2012

Using Mis To Deliver Essential Services:Case Of Healthcare Provision Support In Fiji, Deogratias Harorimana Sr

Dr Deogratias Harorimana

In comparison to other Pacific Island countries, Fiji’s health system is the most developed amongst Pacific Island countries (UNDP 2006) and has undergone significant change in the last decade. From 1999 – 2009, AusAid, a major donor to Fiji’s health system, has supported two stage health sector improvement programs. The first stage (1999 - 2003) was a management reform program designed to improve decision making by supporting a new model of decentralized management. The second phase (2004 – 2009) looked at improving governance, health systems performance, clinical outcomes and supported public health and infrastructure initiatives at the divisional level (WHO WPRO ...


Impact Of Crm Systems On Organisational Performance: A Case Study Of Anz Bank, Deogratias Harorimana Sr Jan 2012

Impact Of Crm Systems On Organisational Performance: A Case Study Of Anz Bank, Deogratias Harorimana Sr

Dr Deogratias Harorimana

This paper reports case study results analysis of the ANZ Bank in the Pacific Region. The case study results show that ANZ has a well-established CRM system supporting its marketing and sales activities, but equally the results indicate mixed scenarios. A positive relationship between CRM to performance was established. That is, it has a positive contribution to the bank’s performance, both financial and non-financial. There is also negative feedback on the bank’s CRM system which illustrates that CRM system can also have negative consequences. CRM success is questionable from a stand-alone perspective. Although there are encouraging results from ...