Freezing, melting, evaporation and condensation of water are essential ingredients for climate and eventually life on Earth. In the present work, we show how surface freezing of supercooled water in an open container is conditioned and triggered-exclusively-by humidity in air. Additionally, a change of phase is demonstrated to be triggered on the water surface forming surface ice crystals prior...

introduction water vapor is an essential climate element. through latent heat exchanges, the water vapor is considered as the principal way of energy transport through the global atmosphere and it is also a dominant greenhouse gas (held and soden, 2000). over the oceans, warmer surface temperatures may lead to increased evaporation and, therefore, greater specific humidity, but an approximately...

Bio-nanocomposite films based on sago starch containing 2% cinnamon essential oil and 3% titanium dioxide nanoparticles were used in the packaging of fresh pistachios and stored at different temperatures (4, 25, and 35 ˚C) and relative humidity (30, 50, and 70%) for 20 days, and pistachio properties were evaluated in five-day intervals. Using these films in packaging improved the physicochemica...

results there was a significant positive correlation between increase in the monthly average temperature, the number of rainy days, and the number of frost days with the number of rta (p < 0.05). increased monthly average relative humidity, evaporation, and number of sunny days were negatively correlated with the frequency of rta (p < 0.05). we also observed an inverse significant correlation b...

The paper presents the results of study temperature regime optimization for storing seeds tropical orchids on example Eulophia streptopetala Lindley and Stanhopea tigrina Batem ex Lindl. Mature were frozen at temperatures 18C, 40C or 80C a period 1, 3, 6 12 months, storage was +4C. Before after freezing, viability determined by visual tetrazole methods. After defrosting, sown plants grown from ...

INTRODUCTION According to the World Health Organization estimates annually in the world die due to CVI every sixth women and 10(th) man. This paper is the research of the correlation between changes in relative air humidity and stroke (CVA) in the Sarajevo Canton. Included are patients who experienced an acute stroke in the Canton of Sarajevo and treated in the pre hospital phase by the staff o...

Freezing of atmospheric water on bituminous construction and road surfaces is a recurring event during winter. However, droplet freezing bitumen passive inhibition methods are poorly understood. Here we investigate relative humidity substrate cooling effects condensation subzero temperature find that explosive, with rapid local heating. We explain the related physics rate can affect sizes tempe...