Search results for "Accumulation"

Intertemporal substitution and the liquidity effect in a sticky price model

2002

Abstract The liquidity effect, defined as a decrease in nominal interest rates in response to a monetary expansion, is a major stylized fact of the business cycle. This paper first confirms that, with separable preferences, a low degree of intertemporal substitution in consumption is a necessary condition for the existence of the liquidity effect. In contrast to this result, in a model with non-separable preferences and capital accumulation it takes an implausibly high elasticity of intertemporal substitution to produce a liquidity effect. The robustness of these results to alternative degrees of nominal rigidities, capital adjustment costs and stochastic monetary processes is also analysed…

Structure, tritium depth profile and desorption from 'plasma-facing' beryllium materials of ITER-Like-Wall at JET

2017

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement No 633053 . The views and opinions expressed herein do not necessarily reflect those of the European Commission.

STUDIO DELLA BIODISTRIBUZIONE DI SOSTANZE BIOLOGICAMENTE ATTIVE IN ORGANISMI ACQUATICI

2022

Una revisión del concepto de «acumulación por desposesión» de D. Harvey

2019

espanolEl objetivo del presente articulo sera realizar una revision critica de la interpretacion realizada por D. Harvey del concepto de «acumulacion originaria» expuesto por K. Marx en El Capital. A traves del analisis de los escritos donde Marx aborda esta cuestion, trataremos de demostrar que la aportacion principal de Harvey -reinterpretar la acumulacion originaria, no como proceso fundacional de las condiciones necesarias para la produccion capitalista, sino como proceso continuo y permanente utilizado para restablecer las condiciones optimas de la acumulacion de capital mediante la conquista de nuevos espacios- se sustenta en una interpretacion parcial de los textos de critica de la e…

Value of insoluble PABPN1 accumulation in the diagnosis of oculopharyngeal muscular dystrophy.

2019

Background and purpose The aim was to assess the value of insoluble PABPN1 muscle fibre nuclei accumulation in the diagnosis of atypical cases of oculopharyngeal muscular dystrophy (OPMD). Methods Muscle biopsies from a selected cohort of 423 adult patients from several Italian neuromuscular centres were analysed by immunofluorescence: 30 muscle biopsies of genetically proven OPMD, 30 biopsies from patients not affected by neuromuscular disorders, 220 from genetically undiagnosed patients presenting ptosis or swallowing disturbances, progressive lower proximal weakness and/or isolated rimmed vacuoles at muscle biopsy and 143 muscle biopsies of patients affected by other neuromuscular diseas…

Energy Metabolism, Lactate/Pyruvate Ratio and Extracellular Space in Cortex and White Matter Adjacent to and Distant from a Local Freezing Lesion

1969

The present investigation was undertaken to study the distribution of pathological fluid accumulation and the local energy metabolism in the cortex and white matter following a localized traumatic lesion of the cortex. A systematic examination of the changes in the tissue following a trauma is the basis for further studies on the relationship between cortical blood supply, local tissue metabolism and local function.

Empirical Estimation of Accumulation-Induced Change in Gill Net Catchability: Mind the Observation Errors

2015

We analyzed cumulative catches for 24 h gill net exposures divided into 4*6 h, 2*12 h and 1*24 h soak time treatments to estimate the reduction in its catchability due to accumulation of fish. The effects of loss of catch during net lifting, disturbance effect and fouling were eliminated as far as possible to reveal the true effect of accumulation. First we applied simple nonparametric and parametric tests in comparison of treatments. As expected, considerable reduction in catchability took place along with the increase in soak time, indicated by significantly lower total 24 h catches from longer soaks in comparison with shorter ones. The reduction was more pronounced for roach than for per…

Therapeutic and diagnostic applications of nanoparticles.

2011

Nanoparticles are sphere-like biocompatible materials made of inert silica, metal or crystals of a few nanometers in size. They are emerging as a novel class of therapeutics for cancer treatment. Being more selective and specific toward their targets, nanoparticles have the ability to enhance the anticancer effects and to simultaneously reduce systemic toxicity compared with conventional therapeutics. Furthermore, they offer the potential to overcome drug resistance leading to higher intracellular drug accumulation. Nowadays, nanotechnologies are applied to molecular diagnostics and incorporated in cutting-edge molecular diagnostic methods, such as DNA and protein microarray biochips. Nanot…

The effect of time, concentration and temperature on bioaccumulation in the gill of crayfish procambarus clarkii induced by organochlorine pesticides…

1993

Abstract 1. Crayfish were exposed to 1 25 th 96-hr lc 50 and 96-hr lc 50 of lindane and endosulfan for 1, 24, 48, 72 and 96 hr. 2. Concentrations of lindane and endosulfan were determined in gill tissue at 22°C and 29°C. 3. Clear differences were found in all concentrations, times and temperatures tested in gill tissues. 4. The highest accumulation of pesticide was found in the lc 50 endosulfan value.

Acute toxicity and bioaccumulation of endosulfan in rotifer (Brachionus calyciflorus).

1991

Abstract 1. 1. The acute toxicity of endosulfan was determined for the freshwater rotifer Brachionus calyciflorus . 2. 2. The mean 24 hr lc 50 value for endosulfan was 5.15 ppm with a coefficient of variation of 14.7%. 3. 3. Rotifers were exposed at two sublethal concentrations (1.5–2.0 ppm) of endosulfan for bioaccumulation experiments, for an exposure time of 24, 48, 72 and 96 hr. The rotifers were fed with Nannochloris oculata (5 × 10 5 cell/ml). 4. 4. The highest accumulation of endosulfan was found 24 hr after the start of the exposure to 1.5 ppm of the toxicant. A steady-state concentration in rotifer was reached between 24–48 hr, followed by a gradual decrease until 96 hr.