Comparative catalytic activities of cadmium, zinc, and cobalt sulfides used as sensitizers in the visible range of spectrum in photodecomposition of Co(III) amino complexes were investigated.

The acute toxicity and antiarrhythmic activity of amino-, alkylamino-, and dialkylaminoacetic acid orthotoluides have been basically determined by the lipophilic properties and spatial effects of substituents when an amino nitrogen atom is present.

The acute toxicity (LD50) and antiarrhythmic activity of orthotoluides of amino, alkylamino, and dialkylaminoacetic acids are basically determined by the lipophilic properties and spatial effects of substituents when an aminonitrogen atom is present.

The study has shown that the nature and position of a substituent in the aromatic ring substantially affect the antiarrhythmic activity of diethylaminoacetic acid arylamides. The orthosubstituted arylamides display the highest activity while the meta- and parasubstituted arylamides are virtually inactive. The antiarrhythmic activity of the compounds in question correlates with electron and surface effects of orthosubstituents in the aromatic ring and with the surface activity of the above compounds.

There are several points of view about the flow regime in the rotor of tubular supercentrifuges . Models of thin layer surface, annular single layer (between the inner rotor surface and the free liquid surface) i and annular multilayer liquid flow in the rotor are proposed in [1-3], respectively. Flow regime in the rotor was studied in these investigations on the basis of data obtained in the process of washing a homogeneous colored liquid from the rotor. This is not related to the sedimentation process of the suspension solid phase. The flow regime within the rotor was investigated at the Moscow Meat and Dairy Industry Technological Institute from the results of sedimentation of a simulated low-concentratio n highly dispersed suspension. This investigation was based on two possible alternatives of liquid flow in the rotor: thin layer surface and annular layer. The productivity index ~ [4] of the centrifuge was calculated from the following formula s E, - r0 L L = g g In _~R.~ ro here r 0 is the liquid free surface in m, ,_o is the rotational speed of the rotor in tad/set, L is the rotor length in m, g is the acceleration of gravity in m/sec 2, and R is the rotor inner radius in m. The results of suspension sedimentation in a tubular supercentrifuge rotor can be presented in the form of functions Cc/C 0 = f(B1) and Cc/C 0 = f(B2), where c c is the solid phase concentration in the centrate in %, c o is the starting solid phase concentration in the suspension in %, B1 = V/Y i is the clarification number of the centrifuge corresponding to thin layer surface flow regime in m/sec, B 2 = V/~2 is the clarification number of the centrifuge corresponding to annular layer suspension flow in m/set, and V is the throughput capacity of the centrifuge in m3/sec.