80 years of electrospinning

Electrospinning is a relatively simple fibre-forming process and offers a unique method to produce nanofibers. The process exists at this moment 80 years and has seen a very turbulent history. There is a need to see what actually happened in this history. We have taken a brief look in the history of electrospinning. This paper is reporting on some of the aspects that electrospinning encountered. It is crucial to see that electrospinning has been used in different countries in different time periods. The history of electrospinning is mainly characterised by bad timing. The future of electrospinning looks however quit bright

80 Years of Gardner Magic

The magician and historiam Max Maven poignantly eulogized Martin Gardner in his article In Memoriam in the July 2010 issue of GENII magazine. Commenting on the diverse interests of Gardner in non-fiction, puzzles, recreational mathematics, philosophy, games, skepticism, word play and magic, Maven noted: So far as is known, the final Gardner publication during his lifetime was a magic trick that he contributed to the May 2010 issue of Word Ways, a quarterly journal with a small but fervent readership. I will mention, without humility, that the trick was based on one of mine -- which in turn was based on one of Martin\u27s

15 years of comet photometry: A comparative analysis of 80 comets

In 1976 we began a program of narrowband photometry of comets that has encompassed well over 400 nights of observations. To date, the program has provided detailed information on 80 comets, 11 of which have been observed on multiple apparitions. In this paper we present the observed range of compositions (molecular production rate ratios) and dustiness (gas production compared with AF-rho) for a well sampled group of comets. Based on these results we present preliminary analysis of taxonomic groupings as well as the abundance ratios we associate with a 'typical' comet

Fighting austerity: Why after 80 years the General Theory is still relevant today,

The guiding spirit of the Keynesian Revolution is that full employment is a goal which can be pursued not by following the free market rules, but by reshaping them by means of public intervention. This message was widely accepted for thirty years as from the end of the Second World War by all the advanced countries which actively engaged in full employment and welfare policies, and subsequently abandoned with the neo-liberal Restoration which saw the dogmas of individualism and de-regulation prevailing. In reclaiming the topical importance of the General Theory, we should take into consideration the changed circumstances of today’s world when compared to those of twenty – let alone eighty – years ago, although there are notable similarities between the Great Depression of the 1930s – Keynes’s world – and our contemporary crisis. However, his prescription for a better society is still relevant: it lies in setting rules and limitations in the market arena, not letting individual self-interest prevail, and putting some governing bodies in charge of filling the gap when deficient aggregate demand occurs, so that the acquisition of material goods and the fruition of the enjoyments of life be not a privilege of the few but the conquest of civilization

How Has the Literature on Gini's Index Evolved in the Past 80 Years?

The Gini coefficient or index is perhaps one of the most used indicators of social and economic conditions. From its first proposal in English in 1921 to the present, a large number of papers on the Gini index has been written and published. Going through these papers represents a demanding task. The aim of this survey paper is to help the reader to navigate through the major developments of the literature and to incorporate recent theoretical research results with a particular focus on different formulations and interpretations of the Gini index, its social welfare implication, and source and subgroup decomposition.Gini coefficent or index; social welfare; decomposition; computation