REFINING VENT EMISSIONS FROM FINE DROPLET AEROSOLS

Vent emissions from industrial enterprises cause air pollution to a great extent. These emissions contain solid or liquid particles. it is necessary to install cleaning units for those particles. Existing methods of cleaning as applied to fine droplet aerosols have a number of limitations, especially within liquid disperse phase. This is why it is relevant to design highly-efficient cleaning units for vent emissions refining from droplet aerosols of sub-micron sizes. The research reveals the most important parameters for designing highly-efficient cleaning units for vent emissions refining from droplet aerosols. The authors designed a pilot plant and performed a series of experiments to define the optimal geometrical characteristics and modes of operation for cleaning units. These theoretical and experimental studies mase it possible to design three types of cleaning units with precipitating elements in the form of pipes and slotted channels with L/D = 250 dimensions

New Two-Component Pyrene Probes Based on Oligo(2'-O-Methylribonucleotides) for microRNA Detection

New two-component pyrene probes based on oligo(2'-O-methylribonucleotides) for microRNA detection have been designed. They contain the (Py)A-modified adenine cluster (pentaadenosine fragment that contains 8-(1-ethynylpyrene)-deoxyriboadenosine in the center) and can form a three-way junction (3WJ) structure with a target RNA. We have chosen microRNA let-7a-3p as the RNA target because of the correlation of its concentration in cells with the appearance and progression of cancer. We have compared the thermal stability and fluorescence properties of the two-component probes based on oligo(2'-O-methylribonucleotides) that contain either deoxyriboadenosine (dAdA(Py)AdAdA) or the (2'-O-methylribo)adenosine (A(m)A(m Py)AA(m)A(m)) cluster with those of (dAdA(Py)AdAdA)-containing oligodeoxyribonucleotide. The changes in the fluorescence spectra of two-component probes after hybridization with the RNA target have been demonstrated. These probes can be used for designing a new microRNA detection system.11Nsciescopu