Search results for "Change"

The role of Mediterranean wetlands in climate regulation and greenhouse gases exchanges: from carbon biogeochemistry to European water and nature Dir…

2022

Atesa la seua alta activitat biogeoquímica, els aiguamolls són un dels tipus d'ecosistemes més actius en el cicle global del carboni, amb altes taxes d'intercanvi de carboni i de gasos d'efecte hivernacle (GEH), i, per tant, un gran potencial de regulació climàtica. Una de les parts més importants de la biogeoquímica del carboni als aiguamolls està lligada a les taxes metabòliques, a partir del coneixement de les quals es pot determinar un balanç de carboni associat amb el potencial intercanvi de carboni amb l'atmosfera. La seua capacitat per retindre carboni i mitigar el canvi climàtic, o, per contra, d'alliberar més GEH, i contribuir a l'escalfament global, es determina pel balanç de carb…

Utilisation d'ensembles de simulations climatiques sur Modèles de Circulation Générale de l'Atmosphère: concepts, méthodes et applications à la clima…

2003

Les séries (ensembles) de simulations longues sur modèles numériques de Circulation Générale de l'Atmosphère (MCGA) - réalisées par la communauté des physiciens de l'atmosphère – offrent au géographe climatologue plusieurs informations relatives à la variabilité du climat complétant l'analyse des séries observées. L'étude présentée ici se base sur un ensemble de 8 simulations longues (de 1948 à 1997) réalisées sur le MCGA français ARPEGE Climat - Version 3 (Centre National de Recherches Météorologiques). Ces simulations utilisent comme conditions aux limites l'énergie solaire et les champs de Températures de Surface de la Mer. Ces dernières varient en fonction des observations mensuelles et…

Impact of the El Niño / La Niña Southern Oscillation on rainfall and vegetation photosynthetic activity of the winter rainfall region of South Africa

2011

International audience

Family Activity Patterns as related to the symmetry in the division of labour in the family, children’s socialization to work and the significance of…

1986

The paper is based on empirical material collected in connection with the research project ‘Way of life in the family parental awareness of parenthood, and children’s social development’. The sample consisted of 212 families with both parents and a six-year-old child. It was relatively homogeneous with regard to the educational background of the parents. Comparisons were made between groups of families which differed with regard to (1) symmetry in the division of labour, (2) socialization of children to work, and (3) the relative significance of work vs. family life to the parents. Symmetry in the division of labour was strongly reflected in the family time consumption patterns and their co…

Pros and cons of family policies for mothers' labour market participation

2012

PurposeThe purpose of this editorial is to examine sociological research on the possibilities and pitfalls of social policies for mothers' employment participation, and identify research gaps in the existing literature. The paper aims to focus mainly on the implications of parental leave schemes on mothers' employment participation.Design/methodology/approachThe editorial discusses the inconsistencies in the current sociological debate on the impact of social policies on mothers' employment.FindingsThe relationship between parental leave policies and women's participation in the work force is complex. The literature shows a disagreement about whether such policies mitigate family‐related ca…

Clinico-Biomechanical Issues and Dynamic Stabilization When Considering Stem Cell Treatment for Degenerative Disc Disease

2013

After reading the article published in Transplantation (1), scientists are to be congratulatedVespecially with the clinical results as published. Looking for alternatives to avoid fusion is part of function-preserving spine care, as it should be the last option to be undertaken while keeping the debate open (2, 3). Nevertheless, we would like to point out some questions that arise from a clinical point of view from our daily surgical practice. First, several clinical presentations and procedures are compared without taking into account that they are different treatments applied for different disc disease situations (discectomy is performed for disc herniation with radicular symptoms, disc p…

Integrating Keyword Advertising and Dynamic Pricing for an Online Market Place

2014

Keyword Advertising is a main marketing instrument for e-commerce companies in order to generate traffic from search engines on their website. The costs for Keyword Advertising are determined in an auction that is conducted for every single search query, which is entered in by a user. In case of an online market place, each adlink provided by the search engine refers to an ordered list of products on the website of the online market place. Hereby, the price of the product is oftentimes one important criteria for the user when deciding for one or the other product from the list. However, existing models assume the price of products to be exogeneous. By taking into account the prices of linke…

European phenological response to climate change matches the warming pattern

2006

Global climate change impacts can already be tracked in many physical and biological systems; in particular, terrestrial ecosystems provide a consistent picture of observed changes. One of the preferred indicators is phenology, the science of natural recurring events, as their recorded dates provide a high-temporal resolution of ongoing changes. Thus, numerous analyses have demonstrated an earlier onset of spring events for mid and higher latitudes and a lengthening of the growing season. However, published single-site or single-species studies are particularly open to suspicion of being biased towards predominantly reporting climate change-induced impacts. No comprehensive study or meta-an…

Tree rings and volcanic cooling

2012

Post-Processing via Cation Exchange Cartridges: Versatile Options

2012

New 68Ge/68Ga radionuclide generators provide the positron emitter 68Ga (T½ = 67.7 min) as an easily available and relatively inexpensive source of a PET nuclide for labeling of interesting targeting vectors. However, currently available “ionic” 68Ge/68Ga radionuclide generators are not necessarily optimized for the routine synthesis of 68Ga-labeled radiopharmaceuticals in a clinical environment. Post-processing of 68Ge/68Ga generators using cation exchange resins provides chemically and radiochemically pure 68Ga with 97±2% within less than 4 min, with 68Ge almost completely removed, and ready for online labeling. This simple, fast, and efficient technology can be extended for new applicati…