1,721,267 research outputs found
La Massa cellulare metabolicamente attiva è predittiva dell'obesità negli adulti?
No full textStudi longitudinali di misura del potassio 40 sono rari. Effettuare tale misura è tuttavia importante nella valutazione dei cambiamenti della composizione corporea con l’età.
Lo scopo del lavoro è stato quello di misurare longitudinalmente il potassio 40 e la massa cellulare metabolicamente attiva in maschi. E’ stata effettuate la misura del potassio 40, attraverso un contatore di potassio, ogni anno in 133 maschi di età compresa tra i 20 ed i 66 anni. La massa cellulare metabolicamente attiva (BCM) è stata calcolata con la seguente formula: 0.00833 × TBK (mmol).
I risultati mostrano un significativo aumento di soggetti soprappeso ed obesi tra l’ingresso e l’uscita dallo studio. Non c’è stata alcun significativa diminuzione del potassio in questo campione di popolazione. Il picco massimo di BCM è stato riscontrato al di sotto dei 30 anni di età ed era significativo del BMI dopo i 30 anni di età.
In conclusione i soggetti con una elevata BCM in età giovanile tendevano ad aumentare il BMI con il passare degli anni.Background: Longitudinal studies of Total Body Potassium (TBK) are rare. Assessing TBK in order to evaluate Body Cell Mass (BMC) is important in the measure of Body Composition and aging.
Objectives: The aim of this study was to assess TBK and BCM in healthy men longitudinally in order to evaluate the changes with age.
Design: Longitudinal study
Subjects: Body composition of 133 healthy Italian men, 20 to 66 years of age, was measured by whole-body counting of 40K. BCM (kg) was calculated as 0.00833 × TBK (mmol).
Results: There was a significant increase in overweight and obese subjects between entry into and exit from the study. There was no significant decrease in TBK in this sample. The maximum BCM score from early age (30 years of age) was found to be a significant predictor of BMI after age 30.
Conclusion: Subjects with high maximum BCM at early age tend to increase in BMI as they age
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Pricing Credit Default Swaps Under Multifactor Reduced-Form Models: A Differential Quadrature Approach
No full textWe present a new numerical method for pricing credit default swaps under fully correlated multifactor reduced-form models. In particular, the proposed approach combines an implicit/explicit operator splitting procedure with the harmonic differential quadrature scheme, and is so efficient that it can be applied to models with up to six stochastic factors. This is a remarkable advantage, as we can use two factors to describe the interest rate, other two factors to describe the default probability, and other two factors to take into account, for example, the so-called counterparty risk. The performances of the novel method are demonstrated by extensive simulation, in which various kinds of models with four and six fully correlated factors are considered
Angosce al di qua e al di là del principio del piacere nel trattamento psicoanalitico delle condizioni bordeline.
No full textNei momenti più acuti del dispiegamento del conflitto transferenziale, si assiste alla ripetizione di un lutto traumatico dalle cui vicissitudini dipendono le sorti della cura analitica. Tale manifestazione tipica della crisi borderline costituisce anche un aspetto generale della vita psichica e del trattamento analitico, che sarebbe al centro del fenomeno della nevrosi narcisistic
Duchenne muscular dystrophy. A genetic and epidemiologicalò study carried out in the province of Verona.
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