Determination of active state of petroleum disperse systems by light scattering method

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 31–32, May, 1988.     

Particle‐Based Synthesis of Peptide Arrays

High‐density peptide arrays with solid amino acid particles: Intermittent “freezing” of activated amino acid derivatives within solid particles allows a laser printer or a chip to spatially address these “postal packages”. Subsequent parallel coupling is started simply by melting a whole layer of 20 different amino acid particles, freeing the hitherto immobilized amino acids and resulting in the coupling of all 20 different amino acids to the support in a single coupling step.

     

Autoclave Molding of Thermoprotective Coatings on Large Products Using a Metal composite Mandrel

Russian Engineering Research - Abstract—A technology is developed for the application of a thermoprotective coating by autoclave molding with a metal composite mandrel. This technology...     

Technology of Monitoring and Analysis of the Hydrometeorological Situation in the Arctic

Journal of Communications Technology and Electronics - A new geoinformation technology for monitoring the hydrometeorological situation in the Arctic is considered. This technology combines two...     

Search for the Optimal Control over Current Regimes in Electroplating Processes with Multi Anodes at a Diversified Assortment of Treated Articles

Journal of Computer and Systems Sciences International - Methods of controlling electroplating processes are considered, and the shortcomings in the use of basic engineering and structural...     

Unstable Oscillating Systems with Hysteresis: Problems of Stabilization and Control

Journal of Computer and Systems Sciences International - The work is devoted to studying the dynamics of unstable oscillating systems (in the form of an inverted pendulum) controlled by the action...     

Isolation of adamantane hydrocarbons from Cenomanian oil of the Russkoe oilfield

Adamantane hydrocarbons have been isolated from Cenomanian heavy naphthenic oil of the Russkoe field using the thiocarbamide adduction method. Steam distillation of the oil has given a fraction (boiling range 105–150°C) containing 0.36 wt % adamantane, from which a concentrate containing 18.2 wt % C₁₀–C₁₄ adamantane derivatives has been obtained. Adamantane and its derivatives in the crude oil, oil fractions, and concentrate have been identified, and adamantane has been quantified using the gas chromatography—mass spectrometry technique.     

Selective Functionalization of Microstructured Surfaces by Laser‐Assisted Particle Transfer

Microcavity arrays represent millions of different reaction compartments to screen, for example, molecular interactions, exogenous factors for cells or enzymatic activity. A novel method is presented to selectively synthesize different compounds in arrays of microcavities with up to 1 000 000 cavities per cm². In this approach, polymer microparticles with embedded pre‐activated monomers are selectively transferred into microcavities with laser radiation. After particle patterning, heating of the particle matrix simultaneously leads to diffusion and coupling of the monomers inside each microcavity separately. This method exhibits flexibility, not only in the choice of compounds, but also in the choice of particle matrix material, which determines the chemical reaction environment. The laser‐assisted selective functionalization of microcavities can be easily combined with the intensively growing number of laser applications for patterning of molecules and cells, which is useful for the development of novel biological assays.