Search results for "Masse"

Effets du mode de travail du sol sur les microorganismes à l'échelle du profil cultural

2009

Soil tillage modifies the location of crop residues and soil structure and affects microbial populations and activities such as mineralization of soil organic matter. The aim of this work was to compare the effect of two tillage systems (traditional mouldboard ploughing, LT, and reduced tillage, TR) on crop residues distribution and soil structure as well as their consequences on soil microbial biomass (BM), the potential activity of C mineralization (Cmin) and soil bacterial community structure (through T-RFLP). In order to study simultaneously the effects of soil structure modifications and crop residues distribution on these microbial parameters we used a stratified sampling scheme based…

Comparison of Post-Weld Treatment of High-Strength Steel Welded Joints in Medium Cycle Fatigue

2010

This paper presents a comparison of three post-weld treatments for fatigue life improvement of welded joints. The objective is to determine the most suitable post-weld treatment for implementation in mass production of certain crane components manufactured from very high-strength steel. The processes investigated are: burr grinding, TIG dressing and ultrasonic impact treatment. The focus of this investigation is on the so-called medium cycle area, i.e. 10 000-500 000 cycles and very high stress ranges. In this area of fatigue design, the use of very high strength steel becomes necessary, since the stress range can exceed the yield-strength of ordinary structural steel, especially when consi…

Isolement et caractérisation de saponosides extraits de deux plantes médicinales : Cyclamen africanum, Zygophyllum cornutum et évalution de leur acti…

2014

The appearance of several diseases, such as cancer, diabetes, high blood pressure and spread of infections mutagenic virus type can be linked to the quality and lifestyle that we lead today. Indeed, several studies on the factors triggering these so-called "morbid" long-or short-term illnesses are related to stress and quality of food consumed, whether of plant and animal origin. These diseases are becoming a common occurrence, they affect different races and all classes of society. According ethnobotanical research, naturally occurring substances, allowed civilizations to survive deadly diseases. For example, we thus find references to periods of malarial fever in China and one of the symp…

Masse scrotali e scroto acuto

2013

Keine Debatte? Reimarus 1830. Ein Postscriptum

2017

Il contributo richiama l'attenzione su un saggio di Reimarus pubblicato nel 1830 che, pur offrendo interessanti spunti per un dibattito sulla teoria di Bluhme per la composizione del Digesto di Giustiniano, non ha suscitato l'eco che avrebbe meritato, finendo per essere ignorato nella letteratura successiva che si è occupata del tema.

Biomassa, un modello energetico di hgestione sostenibile delle foreste

2014

Villa Velez

2008

La Villa Velez, masseria del diciottesimo secolo costruita nel territorio di Partinico, costituisce una delle ormai rare testimonianze di architettura rurale concepita come grande azienda agricola abitata. Luoghi ormai quasi del tutto abbandonati o alterati nella loro identità dal succedersi degli eredi o acquirenti che ne hanno preso il possesso, spesso senza conoscerne il valore storico e architettonico

Editorial - Renewable energy sources: a strategic option also in the wine growing and winemaking sector.

2010

In tale lavoro, si analizzano le possibilità connesse allo sfruttamento dei residui di potatura dei vigneti e delle vinacce per la produzione di energia alternativa, muovendo dall'analisi di un caso studio.

Etude en champ proche et champ lointain de surfaces métalliques : apport des microscopies à sonde locale à l'étude des étalons de masse

2005

Among the international system of units (SI) the kilogram is the only one which is still defined by a material artefact, the international prototype of the platinum iridium kilogram. The instability of mass standards is one of the major concerns of national metrology institutes and the subject of numerous studies. Interest in microscopic studies of surface quality of a mass has grown, as it is well known that surface roughness is a factor in determining the long-term stability of mass standards. This thesis is devoted to the study in near field and far field for determining the topography and roughness of metallic surfaces, in related with different institute, national and international met…