Study of Angular Distribution and KNO Scaling in the Collisions of 28Si with Emulsion Nuclei at 14.6A GeV

An attempt has been made to study the angular characteristics of heavy ion collision at high energy in the interactions of 28Si nuclei using with nuclear emulsion. The KNO scaling behavior in terms of the multiplicity distribution has been studied. A simplest universal function has been used to represent the present experimental data.

Crystal polarity discrimination in GaN nanowires on graphene

We present experimental data and computational analysis of the formation of GaN nanowires on graphene virtual substrates.

Properties of kukersite shale oil

Inspite of the increasing focus on reducing carbon dioxide emissions, production of shale oil continues to be economically favorable, and production has even increased in recent years. Producing and handling shale oil requires data on its properties, and to provide this data we have undertaken an extensive project to experimentally measure the properties of Estonian kukersite shale oil. In this article we describe the sample preparation methods and present experimental data on key properties of the shale oil samples. Included is data on the densities, refractive indexes, average boiling points, and molar masses of distillation fractions with narrow boiling ranges. A major component of kukersite shale oil is phenolic compounds, and to investigate their effect on the properties we used extraction to obtain samples with either fewer or more phenols than commonly found in the oil. The effect of composition on the properties is discussed. We also present correlations for calculating one of these properties if two others are known. This article lays the groundwork for future articles which will go into further detail on specific properties of these samples.

L’ontologie amazonienne: animisme ou non-essentialisme?

Titre : « L’ontologie amazonienne : animisme ou non-essentialisme ? »Résumé : Comment les populations indigènes d’Amazonie se représentent-elles les êtres du monde ? En d’autres termes, quelle est leur ontologie ? La plus récente réponse à cette question passe par la réhabilitation d’un concept ancien : l’animisme. Ce modèle de la pensée amazonienne s’est imposé dans les deux dernières décennies, et il occupe aujourd’hui une position hégémonique. Je soutiens ici que le modèle animiste de la pensée amazonienne pose de nombreux problèmes : il rend mal compte des données ethnographiques et échoue à identifier le propre de la pensée amazonienne. Si l’ontologie amazonienne n’est pas animiste, qu’est-elle alors ? Je propose un nouveau modèle selon lequel l’ontologie amazonienne est fondamentalement non essentialiste. Deux types de preuves viennent corroborer cette proposition : je propose d’abord une brève revue de la littérature ethnographique amazoniste, puis présente des données expérimentales que j’ai récemment collectées chez les Huni Kuin du Haut-Purus (Amazonie péruvienne). Je conclus en posant quelques-uns des jalons d’une vaste entreprise de comparaison des ontologies à travers le monde.Mots-clés : Amazonie, animisme, essentialisme psychologique, ethnobiologie, ethnosociologie, Huni Kuin, ontologie, perspectivisme.Title: « Amazonian ontology: animism or non-essentialism? »Abstract: How do indigenous Amazonian people conceive of the beings of the world? In other words, what is their ontology? The most recent response to this question consists in revamping an old concept: animism. Within the last two decades, this model of Amazonian thought has become increasingly influential. I contend that the animistic model of Amazonian thought is problematic in many respects: it does not do justice to ethnographic data and fails to pinpoint the uniqueness of Amazonian thought. If the Amazonian ontology cannot be characterized as animistic, what is it then? I put forth a new model according to which the Amazonian ontology is fundamentally non essentialist. Two strands of evidence corroborate this claim: first, I briefly review some of the Amazonianist ethnographic literature, and next present experimental data I recently collected among the Huni Kuin of the Upper Purus River (Peruvian Amazon). In conclusion, I pave the way for a broader endeavor of comparison of ontologies across the world.Keywords: Amazonia, animism, folkbiology, folksociology, Huni Kuin, ontology, perspectivism, psychological essentialism.

Эрозионные характеристики композитных материалов на основе меди в дуге переменной длины с поперечным продувом газа

We present experimental data on the erosion of electrodes made of copper-based pseudoalloys during contact breaking at current amplitudes up to 150 kA in nitrogen at a pressure of ~2 MPa with transverse gas blowing. The electric-erosion characteristics of copper–iron pseudoalloy CuFe (85/15%) electrodes obtained by laser layer melting, as well as CuFe (70/30%) and CuW (25/75%) pseudoalloy electrodes fabricated by traditional powder technology (sintering of pressed powder compacts) are reported. The specific erosion of electrodes in variable-length arc amounts to ~1 mg/C, which somewhat exceeds the value observed for a fixed-length arc discharge gap.

Магнитоакустический генератор хаотических колебаний c задержкой и бистабильностью

We present experimental data on the development of chaotic oscillations in a nonautonomous magnetoacoustic oscillator based on a hybrid magnetoacoustic resonator of the reflection type. The proposed oscillator exhibits regimes of quasi-periodic and chaotic generation under an external low-frequency periodic force. The chaotic dynamics of the magnetoacoustic oscillator is caused by the presence of delay and bistability in the system.

Experimental Determination of the Static Equivalent Pressures of Detonative Explosions of Stoichiometric CH4/O2/N2-Mixtures and CH4/O2-Mixtures in Long Pipes

In the recent past (PVP2013-97677, PVP2014-28197, PVP2015-45286) we had started to determine the static equivalent pressures pstat of the eight detonative pressure scenarios in long and short pipes for different detonable gas mixtures. The pstat-values are of vital importance for process design: by assigning static equivalent pressures to the highly dynamic detonative pressure peaks it is possible to apply the established pressure vessel guidelines, which can only cope with static loads, for the design of detonation pressure resistant pipes. One important finding was that the ratio R between pstat at the location where transition from deflagration to detonation occurs and pstat in the region of the stable detonation strongly depends on the reactivity of the gas mixture. In this paper we present experimental data showing the variation of R over the entire explosive range of Methane/O2/N2 mixtures. Qualitatively, the results should be representative for all other combustible/O2/N2-mixtures. Furthermore, recommendations for estimating pstat values of short pipe scenarios on basis of the long pipe scenarios are given.

What is the domain for weight computation: the syllable or the interval?

<p>The distribution of lexical stress is sensitive to the weight of rhythmic units such that heavier units more strongly attract stress. This paper addresses the question: what is the rhythmic unit relevant for weight computation? The traditional approach links weight to the <em>syllable</em>: weight is computed over the syllable rime (review in Blevins 1995), possibly with limited onset-sensitivity (Kelly 2004, Gordon 2005, Ryan 2013). I present experimental data which challenge this view, and support a recently proposed non-syllable-based alternative according to which weight is computed over the total vowel-to-vowel <em>interval</em> (Steriade 2012). Using a nonce word production paradigm, I test how likely participants are to stress the initial vs. final vowel in bi-vocalic sequences, manipulating the consonantal interlude separating the two vowels between a single C (e.g. <em>aka</em>) and CC cluster (<em>akra</em>). Initial stress is more likely with CC than C -- medial consonants contribute weight to pull stress to the initial vowel, CC contributing more weight than C. This is incompatible with syllable constituency which parses C/CC in the onset of the final syllable (<em>a.ka</em>, <em>a.kra</em>), and supportive of interval constituency which parses C/CC in the initial interval (<em>ak*a</em>, <em>akr*a</em>).</p>