Thaw water treatment under Moscow insolation conditions by microalgae

Modeling Growth of Microalgae Dunaliella Salina under Different Nutritional Conditions

Problem statement: The aim of this study was to find the empirical model that describes the growth kinetics of Dunaliella salina, with low production cost and to estimate parameters of this model. Approach: In this study the strain of D. salina UTEX 200 was cultivated in seawater (0.5 M NaCl) at room temperature with agitation of 150 rpm and luminous intensity of 60 mmols.m-2.s-1. The synthetic...

Potential enhanced N-nitrosodimethylamine (NDMA) formation under water treatment conditions

This study investigates two aspects of NDMA formation reactions: (i) evaluation of the potential effect of formaldehyde on NDMA formation, particularly in reactions of dimethylamine (DMA) and nitrite, and (ii) assessment of potential NDMA formation from a range of polymeric coagulants and flocculants upon exposure to disinfection oxidants. The results show that the presence of formaldehyde can ...

Voltage based power compensation system for photovoltaic generation system under partially shaded insolation conditions

Partially shaded photovoltaic (PV) modules typically exhibit additional difficulties in tracking the maximum power point since their power–voltage characteristics are complex and may have multiple local maxima. For this reason, conventional techniques fail to track the maximum power point effectively if the PV array is partially shaded or some of its cells are damaged. This paper presents a nov...

Apparent photosynthesis of soybean plants as affected by changes in leaf water potential under field conditions

Letter from Moscow: complementary medicine under glasnost.

The inability of the Soviet medical services to cope adequately with the health needs of the general population is widely recognised and discussed at various levels. There are many reasons for this, both traditional and non-traditional, but they are to a large extent based on the concept that your life should be spared for future generations. One ofthe most interesting and obscure phenomena und...