Search results for "D2"
showing 10 items of 2418 documents
Resolvent estimates for elliptic quadratic differential operators
2011
Sharp resolvent bounds for non-selfadjoint semiclassical elliptic quadratic differential operators are established, in the interior of the range of the associated quadratic symbol.
La auditoria como medio de fiscalizacion de las cuentas públicas mexicanas
2017
Abstract: In this article we present the background of control in Mexico, which plays a key role in the LVII Legislature (1997-2000), where it constitutes a new and stronger supreme audit institution, promulgated in December 2000 the Law Audit Institutions of the Federation. Likewise, an analysis of the types of audits conducted Superior Audit of the Federation, each defining and specifying its objectives. It refers to the powers available to the Superior Audit of the Federation, which are conferred on the Supreme Audit Law of the Federation to carry out reviews and audits of public accounts. Moreover, an analysis of the types of opinions issued by this body to the auditees for reporting ye…
Device-to-device communication for LTE-advanced network system
2014
Device-to-device (D2D) communication has been proposed as a mean for local connections in future ellular networks in order to provide improved throughput, spectrum savings, and longer battery lives. Here we widen the investigations of D2D communication to a 3GPP Long Term Evolution (LTE) system simulated in the interference limited macro-cellular environment, in which D2D communication is applied with D2D specific power control and resource allocation schemes and with a wide range of deployment ratios. Furthermore, we introduce channel model parameters applicable for a fair performance comparison between conventional cellular and D2D enhanced systems. The simulation results demonstrate that…
Polysubstituted ferrocenes as tunable redox mediators
2018
A series of four ferrocenyl ester compounds, 1-methoxycarbonyl- (1), 1,1’-bis(methoxycarbonyl)- (2), 1,1’,3-tris(methoxycarbonyl)- (3) and 1,1’,3,3’-tetrakis(methoxycarbonyl)ferrocene (4), has been studied with respect to their potential use as redox mediators. The impact of the number and position of ester groups present in 1–4 on the electrochemical potential E1/2 is correlated with the sum of Hammett constants. The 1/1+–4/4+ redox couples are chemically stable under the conditions of electrolysis as demonstrated by IR and UV–vis spectroelectrochemical methods. The energies of the C=O stretching vibrations of the ester moieties and the energies of the UV–vis absorptions of 1–4 and 1+–4+ c…
NF-κB e Id2 como nodos de regulación de redes transcripcionales en diferentes modelos biológicos
2015
En el presente proyecto de tesis se ha contribuido a elucidar el importante papel que ejercen los nodos de regulación transcripcional en un contexto fisiológico en el que tienen lugar diferentes procesos biológicos, moleculares y celulares de forma simultánea y coordinada. Concretamente, se ha estudiado cómo dos inputs primarios, NF-κB e Id2, desencadenan un determinado output o proceso biológico concreto en la glándula mamaria y el hígado. Estudios previos describen un aumento de los niveles de actividad del factor transcripcional NF-κB durante el proceso de la involución de la glándula mamaria tras el ciclo embarazo/lactancia. Los resultados obtenidos demuestran que NF-κB tiene un papel i…
Photoluminescent Detection of Human T-Lymphoblastic Cells by ZnO Nanorods.
2020
The precise detection of cancer cells currently remains a global challenge. One-dimensional (1D) semiconductor nanostructures (e.g., ZnO nanorods) have attracted attention due to their potential use in cancer biosensors. In the current study, it was demonstrated that the possibility of a photoluminescent detection of human leukemic T-cells by using a zinc oxide nanorods (ZnO NRs) platform. Monoclonal antibodies (MABs) anti-CD5 against a cluster of differentiation (CD) proteins on the pathologic cell surface have been used as a bioselective layer on the ZnO surface. The optimal concentration of the protein anti-CD5 to form an effective bioselective layer on the ZnO NRs surface was selected. …
La font de Llíria: Edició del primer milacre vicentí publicat (1822)
2014
El present treball estudia el primer milacre vicentí de què es té constància que va ser imprés: La font de Llíria. Editat anònim a València, el 1822, per primera vegada, és una mostra del teatre popular i de carrer del segle XIX i, a més de ser reeditat en diferents ocasions, arribà a inspirar altres autors posteriors. The present work studies the first trext printed wich is considered a milacre (dramatic piece about Saint Vincent Ferrer). La font de Lliria was published anonymously in Valencia, in 1822, for the first time, and it is a sample of popular theater of the nineteenth century. It has been reedited on several occasions, and it has come to inspire later authors.
Sequestration of Pd2+ by polyamino-polycarboxylic ligands
2011
The increase of the worldwide demand of “Platinum group elements” (PGE) for application in several fields such as industry, medicine, jewellery and, especially, in catalyst converter production, caused a noticeable increasing of PGE concentration in the environment. Though palladium, among the anthropogenic PGE, is not the most abundant one, it is the most hazardous since it undergoes easily and quickly oxidation to palladium(II) when in contact with soils, with a consequent increase of its mobility in the environment. The presence of complexing agents, which form soluble complex species with palladium(II), favours the mobility of the ion with an increase of its availability to plants, anim…
Development of New Targeted Inulin Complex Nanoaggregates for siRNA Delivery in Antitumor Therapy.
2021
Here, a novel strategy of formulating efficient polymeric carriers based on the already described INU-IMI-DETA for gene material whose structural, functional, and biological properties can be modulated and improved was successfully investigated. In particular, two novel derivatives of INU-IMI-DETA graft copolymer were synthesized by chemical functionalisation with epidermal growth factor (EGF) or polyethylenglycol (PEG), named INU-IMI-DETA-EGF and INU-IMI-DETA-PEG, respectively, in order to improve the performance of already described “inulin complex nanoaggregates” (ICONs). The latter were thus prepared by appropriately mixing the two copolymers, by varying each component from 0 to 100 wt%…
Advantages of Hyaluronic Acid and Its Combination with Other Bioactive Ingredients in Cosmeceuticals
2021
This study proposes a review on hyaluronic acid (HA) known as hyaluronan or hyaluronate and its derivates and their application in cosmetic formulations. HA is a glycosaminoglycan constituted from two disaccharides (N-acetylglucosamine and D-glucuronic acid), isolated initially from the vitreous humour of the eye, and subsequently discovered in different tissues or fluids (especially in the articular cartilage and the synovial fluid). It is ubiquitous in vertebrates, including humans, and it is involved in diverse biological processes, such as cell differentiation, embryological development, inflammation, wound healing, etc. HA has many qualities that recommend it over other substances used…