Search results for "Spar"

Spark Plasma Sintering (SPS)-Assisted Synthesis and Thermoelectric Characterization of Magnéli Phase V6O11

2018

The Magneli phase V6O11 was synthesized in gram amounts from a powder mixture of V6O11/V7O13 and vanadium metal, using the spark plasma sintering (SPS) technique. Its structure was determined with synchrotron X-ray powder diffraction data from a phase-pure sample synthesized by conventional solid-state synthesis. A special feature of Magneli-type oxides is a combination of crystallographic shear and intrinsic disorder that leads to relatively low lattice thermal conductivities. SPS prepared V6O11 has a relatively low thermal conductivity of κ = 2.72 ± 0.06 W (m K)-1 while being a n-type conductor with an electrical conductivity of σ = 0.039 ± 0.005 (μΩ m)-1, a Seebeck coefficient of α = -(3…

Synchronized gradient elution in capillary liquid chromatography

2013

Abstract The synchronization of injection valve operation and gradient elution in capillary liquid chromatography (cHPLC) is studied. Focus is placed on the cHPLC systems which rely on the splitting of a primary flow to provide the much smaller secondary flow required at the injection device and analytical column. Owing to the tiny secondary flow rates, synchronization is necessary to achieve proper optimization of gradient elution methods. Otherwise, there is a risk of having the analytes totally or partially eluted in the initial isocratic conditions, and there is no control on the actual gradient profile reaching the column. Synchronization is first achieved by switching back the valve t…

Nephrotoxic and hepatotoxic effects of chromium compounds in rats

1986

The nephrotoxic, hepatotoxic and cardiotoxic actions of hexavalent chromium compounds, as well as their effects on lung, blood and circulation may contribute to the fatal outcome of chromium intoxication. Although trivalent chromium have been regarded as relatively biologically inert, there are a few salts of chromium III that have been found to be carcinogenic when inhaled, ingested or brought in contact with the tissues. Sensitive persons and industry workers have been subjects of dermatitis, respiratory tract injuries and digestive ulcers due to chromium compounds. In this work, the authors have studied the effect of trivalent and hexavalent chromium compounds on rats measuring the trans…

Transparency in two municipalities of great population of the Valencian Community: between mimetic isomorphism and the generation of legitimity

2020

Este trabajo de investigación tiene como objetivo fundamental la realización de un análisis sobre los elementos que han justificado la calidad de los procesos de asunción de la transparencia en los ayuntamientos de Alicante y València (2008-2017). En concreto, se partirá del neo-institucionalismo sociológico y de los índices de Transparencia Internacional para caracterizar esta herramienta de buen gobierno y la importancia relativa en ambos ayuntamientos. Entre algunos de los resultados preliminares que hemos obtenido, podemos destacar tanto el papel isomórfico de la legislación como la necesidad de mejorar la reputación de las instituciones estudiadas para implementar dichas políticas. The…

Transparence et totalitarisme

2013

International audience

ASIMMETRIE INFORMATIVE E TUTELA DELLA TRASPARENZA NELLA POLITICA COMUNITARIA DI CONSUMER PROTECTION:LA RISPOSTA DELLA NORMATIVA SULLE CLAUSOLE ABUSIVE

2000

L'autore propone una ricostruzione della normativa sulle clausole abusive e del ruolo della trattativa individuale, muovendo dall'identificazione della ratio di tutela in termini di tutela del mercato e dalla valorizzazione del principio di trasparenza e di quello di buona fede, qual criteri di accertamento della vessatorietà, intesa come ipotesi di asimmetria informativa.

Coleccion de las cartas familiares y papeles curiosos del P. Dn. Josef Clemente Maestro de Teologia de la Congreg[acio]n del Oratorio de S. Felipe Ne…

Ms

Sarcoma Botryoides: Optimal Therapeutic Management and Prognosis of an Unfavorable Malignant Neoplasm of Female Children

2023

Embryonal rhabdomyosarcoma (ERMS) is a rare malignancy and occurs primarily in the first two decades of life. Botryoid rhabdomyosarcoma is an aggressive subtype of ERMS that often manifests in the genital tract of female infants and children. Due to its rarity, the optimal treatment approach has been a matter of debate. We conducted a search in the PubMed database and supplemented it with a manual search to retrieve additional papers eligible for inclusion. We retrieved 13 case reports and case series, from which we summarized that the current trend is to approach each patient with a personalized treatment plan. This consists of a combination of local debulking surgery and adjuvant or neoad…

Improving transparency of scientific reporting to increase value and reduce waste in mental health research.

2015

Critical analysis of the thermal inertia approach to map soil water content under sparse vegetation and changeable sky conditions

2012

The paper reports a critical analysis of the thermal inertia approach to map surface soil water content on bare and sparsely vegetated soils by means of remotely sensed data. The study area is an experimental area located in Barrax (Spain). Field data were acquired within the Barrax 2011 research project. AHS airborne images including VIS/NIR and TIR bands were acquired both day and night time by the INTA (Instituto Nacional de Tecnica Aeroespacial) between the 11 th and 13 rd of June 2011. Images cover a corn pivot surrounded by bare soil, where a set of in situ data have been collected previously and simultaneously to overpasses. To validate remotely sensed estimations, a preliminary prox…