Search results for " effective"

Efficiency of QuEChERS approach for determining 52 pesticide residues in honey and honey bees

2016

A comparison between QuEChERS and other pesticide extraction procedures for honey and honey bee matrices is discussed. Honey bee matrix was extracted by solvent based procedure whereas solid phase extraction was the protocol for the honey matrix. The citrate buffered QuEChERS method was used for both matrices. The methods were evaluated regarding cost (equipment and reagents), time, accuracy, precision, sensitivity and versatility. The results proved that the QuEChERS protocol was the most efficient method for the extraction of the selected pesticides in both matrices. QuEChERS is the most economical and less time-consuming procedure.SPE and solvent-based extraction procedures show equivale…

Resisting Immigration Detention

2016

The aim of this article is to provide a normative analysis of the ways in which immigrants resist immigration detention. After having outlined (in Section 2) some general features that make immigration detention a rather abnormal condition for human beings to be kept in, I distinguish three main forms of resistance to it: institutionalized, non-institutionalized, and anti-institutional. I first spell out, in Section 3, some individual characteristics of these forms of resistance. Then (in Sections 4 and 5), using Italy as my test case, I suggest, for each of these forms, an interpretation of their normative meaning (that is, their meaning according to both the relevant legal rules and their…

The roles of group potency and information and communication technologies in the relationship between task conflict and team effectiveness: A longitu…

2007

The effects of task conflict on group effectiveness are far from conclusive. In order to further clarify this relationship, a contingency approach has been suggested. In this context, the present study examines the roles of group potency and information and communication technologies (ICTs) in the relationship between task conflict and team effectiveness. The study involved 44 groups of 4 members each, working in two communication media. Twenty-two groups worked in a face-to-face condition, and the other 22 groups worked in a computer-mediated communication condition. The groups developed a project during four weekly sessions over a one-month period. The results showed that group potency mo…

Quantitative colorimetric-imaging analysis of nickel in iron meteorites.

2011

A quantitative analytical imaging approach for determining the nickel content of metallic meteorites is proposed. The approach uses a digital image of a series of standard solutions of the nickel-dimethylglyoxime coloured chelate and a meteorite sample solution subjected to the same treatment as the nickel standards for quantitation. The image is processed with suitable software to assign a colour-dependent numerical value (analytical signal) to each standard. Such a value is directly proportional to the analyte concentration, which facilitates construction of a calibration graph where the value for the unknown sample can be interpolated to calculate the nickel content of the meteorite. The…

Conservation status and rates of inbreeding of Italian autochthonous beef breeds

2019

The Keynesian Multiplier

2008

Introduction, Section One: Some Views of the Multiplier, 1. Three Views on the Multiplier, 2. John Maurice Clark's Contribution to the Genesis of the Multiplier Analysis: A note with some related unpublished correspondence, 3. The Material and Methodological Significance of the Supermultiplier, Section Two: Critical Insights on the Multiplier, 4. The Investment Multiplier and Income Savings, 5. The Multiplier and the Principle of Reflux, 6. The Demise of the Keynesian Multiplier Revisited, 7. Consumption, Investment and Investment Multiplier, Section Three: Towards a Re-interpretation of the Muliplier, 8. Kalecki and the Multiplier, 9. The Keynesian Multiplier: The Monetary Pre-Conditions a…

Coauthorship and institutional collaborations on cost-effectiveness analyses: a systematic network analysis

2012

BackgroundCost-Effectiveness Analysis (CEA) has been promoted as an important research methodology for determining the efficiency of healthcare technology and guiding medical decision-making. Our aim was to characterize the collaborative patterns of CEA conducted over the past two decades in Spain.Methods and findingsA systematic analysis was carried out with the information obtained through an updated comprehensive literature review and from reports of health technology assessment agencies. We identified CEAs with outcomes expressed as a time-based summary measure of population health (e.g. quality-adjusted life-years or disability-adjusted life-years), conducted in Spain and published bet…

Characterization of Flux-Grown SmxNd1–xVO4 Compounds and High-Pressure Behavior for x = 0.5

2019

The crystal structure and the vibrational and optical characteristics of flux-grown mixed lanthanide vanadate compounds SmxNd1–xVO4 (x = 0, 0.1, 0.25, 0.5, 0.75 and 1) are reported. A linear, monot...

Efficacy and cost-effectiveness of the UltraCision harmonic scalpel in thyroid surgery: an analysis of 200 cases in a randomized trial.

2004

Thyroid surgery technique has undergone very few changes in the last century. The UltraCision harmonic scalpel (UHS) (Smithfield, RI) has been widely used in laparoscopic surgery and is documented to be safe and fast for cutting and coagulating tissue. We studied whether the use of the UHS could have advantages in thyroid surgery in terms of operative time, length of hospitalization, morbidity, and general costs.Our study was a prospective randomized trial of thyroidectomies and lobectomies performed for benign thyroid diseases in an endocrine surgery unit between February 2001 and July 2002. Patients were randomized in two groups: group A (n=100) underwent thyroidectomy using UHS and group…

Economic Consequences of Investing in Anti-HCV Antiviral Treatment from the Italian NHS Perspective: A Real-World-Based Analysis of PITER Data

2019

OBJECTIVE:\ud We estimated the cost consequence of Italian National Health System (NHS) investment in direct-acting antiviral (DAA) therapy according to hepatitis C virus (HCV) treatment access policies in Italy.\ud \ud METHODS:\ud A multistate, 20-year time horizon Markov model of HCV liver disease progression was developed. Fibrosis stage, age and genotype distributions were derived from the Italian Platform for the Study of Viral Hepatitis Therapies (PITER) cohort. The treatment efficacy, disease progression probabilities and direct costs in each health state were obtained from the literature. The break-even point in time (BPT) was defined as the period of time required for the cumulativ…