Search results for "growth"

Growth curves of sorghum roots via quantile regression with P-splines

2014

Plant roots are a major pool of total carbon in the planet and their dynamics are directly relevant to greenhouse gas balance. Composted wastes are increasingly used in agriculture for environmental and economic reasons and their role as a substitute for traditional fertilizers needs to be tested on all plant components. Here we propose a regression quantile approach based on P-splines to assess, quantify and compare the root growth patterns in two treatment groups respectively undergoing compost and traditional fertilization.

The oocyte derived growth factors, GDF9 and GDF9B, and their biological activities in 'in vitro' cell models

2007

The growth of Finnish software companies in 2008-2011 : empirical investigation of financial ratios as the determinants of growth

2014

The purpose of this study is to examine the relation of growth and the financial ratios of a company. The theoretical portion of the study focuses on the concept of growth in entrepreneurship theory. The empirical portion consists of examination of the financial ratios of 162 Finnish software companies in 2008-2011 by means of quantitative analysis methods. Statistical analysis methods, including analysis of variance, correlation and regression analysis, are used in the analysis. The objective of the study is to reveal how growth affects the financial ratios of a company and which ratios can be used to predict growth. The effects of companies’ age, geographical location and industrial class…

Endocrine effects of sauna bath

2020

Sauna bath brings about numerous acute changes in hormone levels, partly akin to other stressful situations, partly specific for sauna. Norepinephrine increases in those accustomed to sauna bath. Sweating increases the production of antidiuretic hormone, and the renin-angiotensin system becomes activated. Of the anterior pituitary hormones, growth hormone (GH) and prolactin (PRL) secretion is increased. Also β-endorphin has been frequently reported to increase, whereas the responses of ACTH and cortisol are variable, probably depending on the type of sauna exposure. Sperm production decreases in particular in sauna-naïve men, but reduced fertility has not been associated with regular sauna …

Appropriate management of growth hormone deficiency during the age of transition: an Italian Delphi consensus statement

2022

Growth hormone deficiency (GHD) describes the impairment of growth hormone (GH) secretion by the pituitary somatotroph cells. GHD may be congenital, with causes, including genetic alterations and structural brain malformations, or acquired, including midline tumours, cranial irradiation, traumatic brain injury, central nervous system infections and inflammatory conditions. GHD in children is characterised by short stature, delayed bone maturation and abnormalities in substrate metabolism, body composition, physical and psychosocial functioning, all of which improve with recombinant human GH (rhGH) therapy. The diagnosis of GHD is based on clinical signs and symptoms, biochemistry and imagin…

Revaluation of the clinical and metabolic behavior of GHD children during GH treatment according to newly proposed note 39 of the Italian Medicines A…

2015

Background The newly proposed note 39 of the Italian Medicines Agency (AIFA) revisited the diagnostic criteria of growth hormone deficiency (GHD) in children and, applying it, a percentage of children previously diagnosed as GHD may have received a wrong diagnosis and a unnecessary treatment, with potential clinical implications. Aim To evaluate the clinical and metabolic behavior of GH-treated children according to the new criteria of GHD diagnosis. Subjects and Methods: We retrospectively analyzed clinical and metabolic data of 310 prepubertal children (220 M, 90 F, age 10.8 ± 2.9 yrs) with short stature admitted to our section of Endocrinology during the years 2005-2014, having at least …

Lipoprotein alterations and reduced growth hormone secretion: relationships with obesity and cardiovascular risk

2012

Clinical and metabolic impact of three-times-weekly versus daily growth hormone (GH) treatment in naïve GH-deficient children

2017

OBJECTIVE: Growth hormone treatment (GHT) is commonly administered daily, although pulsatile GH secretion is unlikely to be achieved. The auxological effect of a three-injections-per-week (TIW) regimen is controversial, while the metabolic effects have been never evaluated in children. The objective was to evaluate whether two different regimens of weekly injections could lead to similar auxological and metabolic effects in children with GH deficiency (GHD). DESIGN: 32 GHD children (25 males, mean age 10.5 ± 2.2 yr) were randomly assigned to receive daily (group A, No 16) or TIW (group B, No 16) GHT for 12 months. METHODS: Auxological parameters, insulin-like growth factor-I (IGF-I), glucos…

Citronellal and citronellol as growth inhibitors of freshwater cyanobacteria

2014

Cyanobacteria possess a very high tolerance relative to environmental factors, so they can be found in almost every aquatic habitat: oceans, freshwaters, hot springs, soils and bare rocks. Nowadays these microorganisms are thought to cause the formation of intensive blooms which result from water eutrophication. In order to suppress blooms in aquatic ecosystems, it is important to limit the growth of blue-green algae, preferably using environment-friendly procedures. In this article we present how two aliphatic, natural monoterpenes: citronellal and citronellol, influence the growth of cyanobacteria. Three species of freshwater cyanobacteria: Anabaena sp., Nodularia moravica and Chroococcus…

Behind the curtain of international diversification: An agency theory perspective

2018

This paper dissects the antecedents of international diversification through the lens of the agency cost of free cash flow arguments. It explores whether the partial convergence of interests among managers, majority shareholders, and minority shareholders affects a firm's choice to diversify internationally. Using a sample panel of 60 Italian firms evaluated longitudinally from 2004 to 2014, the study tests whether a firm's international diversification is affected by its free cash flow (as the ultimate source of managerial discretion) and debt (as the main constraint to managerial discretion), especially in firm contexts that exacerbate agency problems. We find that the effects on internat…