Water relations and photosynthetic responses of Kékfrankos grapevine (Vitis vinifera L.) in two terroirs with different ecological conditions

Behaviour of Kékfrankos (Vitis vinifera L.) grapevine in two terroirs (Eger-Nagyeged–hill and Eger-Kőlyuktető) were examined during the growing season 2003. There was a close relationship between physiological responses, yield, fruit quality and terroir environmental conditions. Lower water supply in Eger-Nagyeged-hill was detected during the season due to its sloping exposure and soil characteristics. Pressure-volume curves (PV-curves) indicated that there was no osmotic adjustment in the leaves of this variety. Higher osmotic concentration was measured in the leaves of the unstressed terroirs presumably due to higher photosynthetic activity. Differences in soil water content of the 2 terroirs resulted in altered cell wall elasticity of the Kékfrankos variety. Photosynthetic production per unit leaf area and total canopy surface was also affected by available soil water content being lower in Eger-Nagyeged-hill. Physiological distinction of the vines in the 2 terroirs resulted in altered yield and wine quality. Lower yield in Eger-Nagyeged-hill is partly connected to decreased photosynthetic production of the canopy. Improved wine quality of Eger-Nagyeged-hill is due to moderate water stress having positive effect at the end of the growing season and other microclimatic factors, i.e. elevated soil temperature and better sun exposure of leaves and clusters

Thermal and air quality comfort of office buildings based on new principles of dimensioning in Hungary

The majority of climatized comfort spaces are located in office buildings. It is of particular importance to ensure an adequate heat and air quality comfort in such buildings as occupants usually spend their entire working day (8 hours) in their offices unlike in a theatre, restaurant or cinema. Furthermore, issues of comfort in office buildings must be addressed with special attention because the type of work performed requires extra intellectual concentration. In our research the theoretical issues of ensuring adequate thermal and air quality comfort were studied and in-situ measurements were carried out in office buildings. This paper proposes to present the results and the conclusions of the research, which will be the basis of the new principles of dimensioning

Acne: Transient Arrest in the Homeostatic Host-Microbiota Dialog?

We propose that acne vulgaris represents a naturally developing, transient inflammatory interaction of adolescent facial skin with its new microbial/chemical milieu (Cutibacterium acnes, sebum), replacing a state of previous childhood skin homeostasis. This concept might explain why acne is characterized by strong regional and age specificity, prevalent occurrence, and resolution

Acne: Transient Arrest in the Homeostatic Host-Microbiota Dialog?

We propose that acne vulgaris represents a naturally developing, transient inflammatory interaction of adolescent facial skin with its new microbial/chemical milieu (Cutibacterium acnes, sebum), replacing a state of previous childhood skin homeostasis. This concept might explain why acne is characterized by strong regional and age specificity, prevalent occurrence, and resolution