1. Judd (1985) and Chamley (1986) obtained results that in the long run, the optimal capital income taxation should be zero. And they claim that the result does not depend on whether government has the ability to borrow or not. 2. Lansing in this paper gave a counterexample under which the optimal capital income tax rate is non-zero in the long run when the government does not have the ability ...

Recently, the solid phase extraction technology has received considerable attention considering serious environmental problems and much more contaminants present in the samples at trace level that is different to be analyzed. During the whole process of analyzing sample, the preconcentration of sample is the most complicated and significant step, which typically spend much time, affecting the a...

New procedure for permittivity and permeability extraction of two composite (dielectric matrix + magnetic inclusions), isotropic and homogeneous absorbing material is presented. It calculates mentioned parameters by fitting measured transmission data with Debye relaxation model (for complex dielectric permittivity extraction) and with Lorenzian resonant model (for complex permeability extractio...

one of the dangerous complications of cataract extractions is vitreous loss. the purpose of this stuy is to evaluate the incidence of vitreous loss and its sepuale while teaching residents at rasoul akram hospital in iran. this study has been conducted on existing records of 730 eyes which were subjectd to extracapsular cataract extractions by 3rd and 4th year, right handed resident of rasoul a...

background: extraction of blood genomicdnais one of the main approaches for clinical and molecular biology studies. although several methods have been developed for extraction of blood genomic dna, most of these methods consume long time and use expensive chemicals such as proteinase k and toxic organic solvent such as phenol and chloroform. the objective of this study was to developed easy and...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background and aims. the accelerating effect of plasma rich in growth factors in the healing of extraction sockets has been shown by some studies. the aim of the present investigation was to evaluate the effect of deproteinized bovine bone matrix (dbbm) with and without plasma rich in growth factors (prgf) in canine extrac...

ABSTRACT A platform is proposed for the extraction of nutraceuticals ingredients from natural products, which includes the following three processes: 1. Single-stage extraction using scCO2 (supercritical CO2). 2. Single-stage extraction using of high-pressure hot water and /or hot water with scCO2. 3. Multistage extraction, with counter-currently contact between scCO2 and H2O with the raw mater...

Nanoporous carbons (CMK-3) were prepared and have been used as a fiber coating for headspace solid phase microextraction (HS-SPME). The prepared materials were characterized by Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and N2 adsorption/desorption isotherms. The efficiency of the fiber was evaluated using a gas chromatography (GC) system for the extraction of benzene (B) and c...

Background and Objectives: Supercritical fluid extraction (SFE) technique has been studied for extraction of bioactive compounds from Feijoa sellowiana leaves. Results were compared with those obtained from conventional ethanolic extraction (CE). Materials and Methods: Results: The best supercritical carbon dioxide (SC-CO2) extraction conditions was determined as 250 bar of pressure, 50 &deg...

Introduction: The inclination of the occlusal plane (OP) is related to type of dental occlusion. The aim of this study was to evaluate and compare the inclination of occlusal plane in Class II patients treated with the upper first premolars extraction or non-extraction modalities. Materials & Methods: Totally, forty 16-25-year-old patients (15 males and 25 females) with class II malocclusion, ...