scholarly journals Composite nature of fresh skin revealed during compression

2015 ◽  
Vol 4 (2) ◽  
pp. 133-139 ◽  
Author(s):  
Benjamin J. Butler ◽  
Rachael L. Boddy ◽  
Chiara Bo ◽  
Hari Arora ◽  
Alun Williams ◽  
...  
Keyword(s):  
Universe ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 138
Author(s):  
Yuri I. Yermolaev ◽  
Irina G. Lodkina ◽  
Lidia A. Dremukhina ◽  
Michael Y. Yermolaev ◽  
Alexander A. Khokhlachev

One of the most promising methods of research in solar–terrestrial physics is the comparison of the responses of the magnetosphere–ionosphere–atmosphere system to various types of interplanetary disturbances (so-called “interplanetary drivers”). Numerous studies have shown that different types of drivers result in different reactions of the system for identical variations in the interplanetary magnetic field. In particular, the sheaths—compression regions before fast interplanetary CMEs (ICMEs)—have higher efficiency in terms of the generation of magnetic storms than ICMEs. The growing popularity of this method of research is accompanied by the growth of incorrect methodological approaches in such studies. These errors can be divided into four main classes: (i) using incorrect data with the identification of driver types published in other studies; (ii) using incorrect methods to identify the types of drivers and, as a result, misclassify the causes of magnetospheric-ionospheric disturbances; (iii) ignoring a frequent case with a complex, composite, nature of the driver (the presence of a sequence of several simple drivers) and matching the system response with only one of the drivers; for example, a magnetic storm is often generated by a sheath in front of ICME, although the authors consider these events to be a so-called “CME-induced” storm, rather than a “sheath-induced” storm; (iv) ignoring the compression regions before the fast CME in the case when there is no interplanetary shock (IS) in front of the compression region (“sheath without IS” or the so-called “lost driver”), although this type of driver generates about 10% of moderate and large magnetic storms. Possible ways of solving this problem are discussed.


Author(s):  
Cosimo Magazzino ◽  
Marco Mele

AbstractThis paper shows that the co-movement of public revenues in the European Monetary Union (EMU) is driven by an unobserved common factor. Our empirical analysis uses yearly data covering the period 1970–2014 for 12 selected EMU member countries. We have found that this common component has a significant impact on public revenues in the majority of the countries. We highlight this common pattern in a dynamic factor model (DFM). Since this factor is unobservable, it is difficult to agree on what it represents. We argue that the latent factor that emerges from the two different empirical approaches used might have a composite nature, being the result of both the more general convergence of the economic cycles of the countries in the area and the increasingly better tuned tax structure. However, the original aspect of our paper is the use of a back-propagation neural networks (BPNN)-DF model to test the results of the time-series. At the level of computer programming, the results obtained represent the first empirical demonstration of the latent factor’s presence.


2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Peter Stepaniuk ◽  
Amin Kanani

Abstract Background Cannabis use is growing domestically due to recent legalization in many jurisdictions. There are two main species of cannabis, Cannabis sativa and Cannabis indica, and thousands of different commercially available cannabis strains. Although there are multiple reports of cannabis allergy in the literature, to our knowledge, there is no prior published report of selective cannabis strain allergy. Case presentation A 31-year-old male was referred for allergy assessment due to several episodes of localized pruritus and erythema after direct contact with various strains of cannabis. He had noted that the severity of his reaction appeared to be strain dependent. He developed a severe local reaction involving bilateral periorbital edema shortly after coming into direct contact with one particular strain of cannabis. He denied any adverse symptoms after inhalation of cannabis. Fresh skin prick testing was performed to various strains of cannabis and had positive testing to the three of the five tested strains. Conclusions We believe this is the first reported case of selective cannabis strain allergy based on patient history and skin prick testing. This case report outlines the variability in different strains of cannabis and stresses the importance of further research into cannabis allergen identification. Multiple cannabis allergens should be included and incorporated into commercial extracts when they become routinely available.


Organization ◽  
2016 ◽  
Vol 24 (6) ◽  
pp. 737-760 ◽  
Author(s):  
Thibault Daudigeos ◽  
Stéphane Jaumier ◽  
Amélie Boutinot

Critical management studies have largely failed to offer a comprehensive understanding of the devising and implementation of workplace-safety policies and of the complex power arrangements these may imply. By primarily studying forms of control in relative isolation, these studies have instead produced various puzzles, namely, the persistence of a disciplinary treatment of workplace safety within the current neo-liberal era and the paucity of resistance to this. Drawing on the Foucauldian concept of apparatus and related analytical framework, we propose to remedy this through analysing the successive arrangements governing workplace accidents in the French construction industry during the 20th century. We evidence three successive regimes of control in which distinct apparatuses interact in various ways across different settings. Our study testifies to the composite nature of regimes of control governing workplace safety, and shows how it may impinge upon power relations, ultimately allowing more relevant struggles for a safer workplace to be envisaged. Additionally, by proposing an operationalization of the so-far-overlooked concept of apparatus, our study elaborates on the relevance of the governmentalist tradition for critical management studies.


1975 ◽  
Vol 31 (4) ◽  
pp. 434-451 ◽  
Author(s):  
José A. Fernández-Santamaria

Juan Ginés de Sepúlveda epitomizes in many ways, both personally and intellectually, the cosmopolitanism of Spanish political thought in the sixteenth century. Educated in Italy, disciple of Pomponazzi, translator of Aristotle, chronicler of the Emperor and mentor of his son Philip, Sepúlveda is best known—and often misunderstood as the defender of the more unsavory aspects of the Spanish conquest and colonization in America—for his bitter controversy with Bartolomé de las Casas. To that debate Sepúlveda brought a humanist's training and outlook anchored in his devotion to Aristotle, but strongly tempered by his attachment to Saint Augustine. It is the purpose of this paper to examine Sepúlveda's ideas on the nature of the American natives, particularly the question of whether the Indians are natural slaves. Considerations of space, of course, rule out the possibility of undertaking here a detailed scrutiny of the foundations upon which those ideas rest. It can be said, however, that they are typically Renaissance views, a blend of traditions characteristic of the composite nature of the age's intellectual milieu.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Takashi Oki

In this paper, I show that Aristotle’s refutation of the Eleatic argument in Physics I.8 is based on the idea that a thing at the starting point of coming to be is composite and is made up of what underlies and a priva­tion. In doing so, I clarify how the concept of accidentality as used in his solution should be understood in relation to the composite nature of what comes to be. I also suggest an explanation of why Aristotle’s discus­sion of the Eleatic dilemma in Physics I.8, unlike his discussion in the previous chapter, is not clear.


2011 ◽  
Vol 64 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Kevin N. Christensen ◽  
Christine U. Lee ◽  
Matthew M. Hanley ◽  
Nelson Leung ◽  
Thomas P. Moyer ◽  
...  

2016 ◽  
Vol 188 ◽  
pp. 309-321 ◽  
Author(s):  
C. P. O'Brien ◽  
K.-H. Dostert ◽  
M. Hollerer ◽  
C. Stiehler ◽  
F. Calaza ◽  
...  

In order to design catalytic materials, we need to understand the essential causes for material properties resulting from its composite nature. In this paper we discuss two, at first sight, diverse aspects: (a) the effect of the oxide–metal interface on metal nanoparticle properties and (b) the consequences of metal particle modification after activation on the selectivity of hydrogenation reactions. However, these two aspects are intimately linked. The metal nanoparticle’s electronic structure changes at the interface as a catalyst is brought to different reaction temperatures due to morphological modifications in the metal and, as we will discuss, these changes in the chemistry lead to changes in the reaction path. As the morphology of the particle varies, facets of different orientations and sizes are exposed, which may lead to a change in the surface chemistry as well. We use two specific reactions to address these issues in some detail. To the best of our knowledge, the present paper reports the first observations of this kind for well-defined model systems. The changes in the electronic structure of Au nanoparticles due to their size and interaction with a supporting oxide are revealed as a function of temperature using CO2 activation as a probe. The presence of spectator species (oxopropyl), formed during an activation step of acrolein hydrogenation, strongly controls the selectivity of the reaction towards hydrogenation of the unsaturated CO bond vs. the CC bond on Pd(111) when compared with oxide-supported Pd nanoparticles.


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