Search results for " PRIN"
showing 10 items of 1809 documents
Selective photooxidation of ortho-substituted benzyl alcohols and the catalytic role of ortho-methoxybenzaldehyde
2016
It has been recently reported by Palmisano et al. (2015) [1] that the oxidation of 2-methoxybenzyl alcohol (2-MBA) to 2-methoxybenzaldehyde (2-MBAD) proceeds in water under near-UV light with an unexpected catalytic effect of 2-MBAD. In order to investigate the catalytic role of aldehyde in photolytic oxidation of ortho-substituted benzyl alcohols (OSBAs), reactivity runs were carried out with 2-methylbenzyl alcohol (2-MeBA), 2-nitrobenzyl alcohol (2-NBA), 2-hydroxybenzyl alcohol (2-HBA) and 2-chlorobenzyl alcohol (2-CIBA) in the absence and in the presence of their corresponding aldehyde. None of those alcohols showed a measurable oxidation rate even in the presence of their aldehydes but …
On the divide between animate and inanimate
2015
Vitalism was abandoned already for a long time ago, yet the impression that animate beings differ in some fundamental way from inanimate objects continues to thrive. Here, we argue that scale free patterns, found throughout nature, present convincing evidence that this demarcation is only imaginary. Therefore, all systems ought to be regarded alike, i.e., all are consuming free energy in least time. This way evolutionary processes can be understood as a series of changes from one state to another, so that flows of energy themselves naturally select those ways and means, such as species and societies or gadgets and galaxies to consume free energy in the least time in quest of attaining therm…
Internal audit professional principles and academic literature over the last decade: is there a gap to bridge
2022
The Institute of Internal Auditors (IIA) has defined the ethical principles internal auditors must adhere to, allowing them to create a common understanding of ethical behaviour within their profession, thereby promoting ethical culture. This paper aims to analyse the role of these principles in the main branches of internal audit research over the last decade. We examine the most important articles published in this field and categorise them into seven main strands. We assess the extent to which these strands focus on the IIA ethical principles, aiming to identify research gaps in the extant literature. Our findings show that the literature dealing with ethical principles in the recruitmen…
Encapsulation of xenon by bridged resorcinarene cages with high 129Xe NMR chemical shift and efficient exchange dynamics
2023
Functionalized cages encapsulating xenon atoms enable highly sensitive, background-free molecular imaging through a technique known as HyperCEST 129Xe MRI. Here, we introduce a class of potential biosensor cage structures based on two resorcinarene macrocycles bridged either by aliphatic carbon chains or piperazines. First-principles-based modeling predicts a high chemical shift (about 345 ppm) outside the typical experimental observation window for 129Xe encapsulated by the aliphatically bridged cage and two 129Xe resonances for the piperazine-bridged cages corresponding to single and double loading. Based on the computational predictions as well as 129Xe chemical exchange saturation trans…
Multiplicity of solutions of Dirichlet problems associated with second-order equations in ℝ2
2009
AbstractWe study the existence of multiple solutions for a two-point boundary-value problem associated with a planar system of second-order ordinary differential equations by using a shooting technique. We consider asymptotically linear nonlinearities satisfying suitable sign conditions. Multiplicity is ensured by assumptions involving the Morse indices of the linearizations at zero and at infinity.
Los principios generales del derecho en la interpretación. (Una aproximación desde J. Bms. Vallet de Goytisolo)
2011
RESUMENEl artículo comienza haciendo mención al papel de la interpretación en el campo del Derecho así como su alcance en esta área. A continuación, se analiza el concepto de principio general del Derecho. Una vez centradas estas cuestiones, el artículo continúa con una panorámica general de la visión de Vallet de Goytisolo en el tema que se plantea, haciendo una pequeña referencia a la particularidad de la aplicación de la analogía iuris en la proyección de los principios generales del Derecho. La exposición finaliza con unas notas a modo de conclusiones ABSTRACT The article begins by explaining the role and scope of interpretation in Law. Next, it explores the concept of General Principle…
Violation of the equivalence principle from light scalar dark matter
2018
In this paper, we study the local observational consequences of a violation of the Einstein Equivalence Principle induced by models of light scalar Dark Matter (DM). We focus on two different models where the scalar field couples linearly or quadratically to the standard model of matter fields. For both these cases, we derive the solutions of the scalar field. We also derive from first principles the expressions for two types of observables: (i) the local comparison of two atomic sensors that are differently sensitive to the constants of Nature and (ii) the local differential acceleration between two test-masses with different compositions. For the linear coupling, we recover that the signa…
Formazione alla generatività, nella vita coniugale e nella relazione genitoriale. Riflessioni pedagogiche e orientamenti educativi
2014
L’autore tiene presente l’ultimo Rapporto CISF 2001 sulla famiglia in Italia, dedicato alle relazioni di coppia. L’attenzione, in particolare, è rivolta ad un fenomeno emergente, quello delle coppie che scelgono di restare childfree. Viene condotta una riflessione di antropologia pedagogica secondo lo stile fenomenologico, intesa a evidenziare le intenzionalità strutturali della dinamica di una coppia, quella amorosa, quella oblativa e quella sponsale. Qualsiasi scelta fatta dai partner, la convivenza, il matrimonio con rito civile o lo sposalizio con rito religioso, è segnata da queste intenzionalità originarie e dalla loro tensione intimamente generativa. Su questa base, l’autore definisc…
EULAR/PRINTO/PRES criteria for Henoch-Schonlein purpura, childhood polyarteritis nodosa, childhood Wegener granulomatosis and childhood Takayasu arte…
2010
EULAR/PRINTO/PRES Objectives To validate the previously proposed classification criteria for Henoch-Schonlein purpura (HSP), childhood polyarteritis nodosa (c-PAN), c-Wegener granulomatosis (c-WG) and c-Takayasu arteritis (c-TA).Methods Step 1: retrospective/prospective webdata collection for children with HSP, c-PAN, c-WG and c-TA with age at diagnosis <= 18 years. Step 2: blinded classification by consensus panel of a representative sample of 280 cases. Step 3: statistical (sensitivity, specificity, area under the curve and.-agreement) and nominal group technique consensus evaluations.Results 827 patients with HSP, 150 with c-PAN, 60 with c-WG, 87 with c-TA and 52 with c-other were compar…
Complete Genome Sequence of “Candidatus Tremblaya princeps” Strain PCVAL, an Intriguing Translational Machine below the Living-Cell Status
2011
ABSTRACT The sequence of the genome of “ Candidatus Tremblaya princeps” strain PCVAL, the primary endosymbiont of the citrus mealybug Planococcus citri , has been determined. “ Ca . Tremblaya princeps” presents an unusual nested endosymbiosis and harbors a gammaproteobacterial symbiont within its cytoplasm in all analyzed mealybugs. The genome sequence reveals that “ Ca . Tremblaya princeps” cannot be considered an independent organism but that the consortium with its gammaproteobacterial symbiotic associate represents a new composite living being.