Abstract: The invention has to do with an apparatus for removing heat from cylinders of the rotary kiln recuperator cooler. The apparatus comprises heat-exchange tubes which are fixed on the lateral surfaces of bow-shaped support members so that they go around the cooler surface along a wave line with a space of variable cross section being formed between the heat-exchange tubes and the surfaces of the cylinders. Such constructional arrangement of the apparatus permits the heat-transfer area to be increased and substantially greater amount of heat to be removed from the surfaces of the cylinders.

Abstract: The present invention relates to a new process for the preparation of N.sup.1 -(2'-furanidyl)-5-fluoro-uracil, also called Ftorafur, which is a very important anti-cancer compound. Said process comprises reacting 2,3-dihydrofuran with water in the presence of a catalytic amount of an acidic catalyst at a pH below 2.5, removing excess of unreacted starting materials and reacting the mixture obtained with silylated-5-fluoro-uracil is in the presence of a Friedel Crafts type catalyst uracil in an inert organic solvent. The new process has many advantages in comparison with those used so far.

Abstract: The gold-plating electrolyte of the present invention contains the components in the following proportions, g/l:hexapotassium .mu.-ethylenediaminotetracetate bis(aurous sulphite):10.5-123.0a salt of an alkali metal of ethylenediaminotetracetic acid: 17.8-140.0potassium sulphate:12.6-11.0potassium hydrogen phosphate:4.7-40.0water:the balanceThe gold-plating electrolyte of this invention is useful in the preparation of gold reactants for electronics, watch-making, jewelry, radio-engineering.

Abstract: A molding sand mixture containing a filler, a binder in the form of a solution of hydrolyzed ethylsilicate and a curing agent; as the latter use is made of an organic solution of a polyorganosilazane of the formula:{(R.sub.2 SiNH).sub.n [R'Si(NH).sub.1,5 ].sub.m }.sub.k,wherein R is CH.sub.3, R' is CH.sub.3 or C.sub.6 H.sub.5, n=1, k=4-10, m=1-3.The components are taken in the following proportions in percent by weight:______________________________________ solution of hydrolyzed ethylsilicate 10 to 35 organic solution of polyorganosilazane 0.2 to 2.0 filler the balance. ______________________________________The curing agent according to the present invention gives a high quality of the surface finish of the final castings.

Abstract: An apparatus particularly suitable for sun screen blinds having two housings with at least a length of extensible cord fitted therebetween such that a portion of said cord is stored in a housing and may be withdrawn as the blind is opened. A collapsible sun screen is fitted between the housings and is connected to each housing.

Abstract: A dual current supply system for aluminum-producing electrolyzers longitudinally arranged in a series-connected row comprises at least four anode risers in each space between next-adjacent electrolyzers. The system includes anode systems and anode buses electrically connected to the anode risers for supplying current from the anode risers to the anode systems. Two of the anode risers of one of a pair of next-adjacent electrolyzers are coaxially positioned in the space between the next-adjacent electrolyzers and two of the anode risers of the other of the pair of next-adjacent electrolyzers are positioned in the space between the next-adjacent electrolyzers in coplanar relation with the anode risers of the one of the next-adjacent electrolyzers. The arrangement of the anode risers enables a more uniform distribution of the magnetic field and permits the total length of the electrolyzer body and current supply buses to be reduced.

Abstract: A tumbling mill such as a tube or ball mill, wherein an outer shell is provided with an interior liner made up of a series of rings surrounding and distributed along the axis of the shell and each defining and surrounding an interior hollow milling space which has the cross section of a star with rounded points, in a plane normal to the shell axis, with this space having sharp corners extending inwardly toward the shell axis and alternating with the rounded points.

Abstract: The proposed gastric secretion stimulator comprises an active principle which is 2-amino-5-(2-aminoethyl)-1,3,4-thiadiazole, and a pharmaceutical carrier for said active principle. The stimulator is used in the form of hydrochlorides. It displays a selective stimulating effect upon H.sub.2 -ceptors of secretory cells of the stomach and produces a maximum of gastric secretion, which is an important diagnostic factor. The gastric secretion stimulator of this invention is advantageous in that besides parenteral administration, it may be administered per os.

Abstract: A solar photoelectric conversion apparatus comprises a light converter immersed in a transparent liquid heat carrier which occupies the lower part of the cavity of a hollow hermetically sealed reservoir. The apparatus also includes a solar radiation concentrator inserted in a beam of a solar radiation incident on an active surface of the light converter.During operation of the apparatus, vapors of the heat carrier condense on the inner walls of the reservoir and return by gravity to the liquid in the lower portion of the cavity, thereby cooling the liquid and the light converter immersed therein by "thermal siphon" action.

Abstract: According to the invention pulverized brown coal is processed by heating brown coal in two stages. During the first stage brown coal being processed is heated by a gaseous heat carrier to a temperature at which thermal decomposition of the brown coal begins. During the second stage the brown coal being processed is heated by the gaseous heat carrier to a temperature at which an intensive thermal decomposition of the brown coal takes place. The stream of the gaseous heat carrier delivered at the second stage of heating is fed with air oxygen and with low-grade products, such as heavy tars and pyrogenic water which are sprayed into the gaseous heat carrier.

Abstract: A system for measuring radioactivity of labelled biopolymers which comprises an electric drive to ensure stepwise travel of a set of containers, a means for acid precipitation of biopolymers for proportioned feeding of biopolymers to the containers with a biological sample of a coprecipitator and a suspension of diatomite in an acid solution, a means for taking precipitated samples from the containers, and a means for filtering precipitated biopolymers. The system also includes a program unit with a control unit to interact with the above means. The mixture is fed to a detection chamber of a radioactivity measuring device.

Abstract: The proposed ionizing radiation generator comprises an ionizing radiation emitter including a resonance transformer whose field winding is arranged near the low-voltage end of the step-up winding, electrically associated with the electrically conducting housing of the resonance transformer. The emitter also includes an accelerating tube whose high-voltage electrode is coupled to the high-voltage end of the step-up winding of the resonance transformer and attached to one of the ends of the tubular insulator of the accelerating tube which accommodates the step-up winding. The low-voltage electrode of the accelerating tube is electrically associated with the housing, while a source of charged particles is arranged in the evacuated inner space of the accelerating tube disposed between the housing and the tubular insulator, one of the electrodes of the tube being electrically associated with the charged particle source.

Abstract: In a device for electrically charging particles, a pair of parallel plasma generators are spaced from one another, each of the generators having corona discharge electrodes. A main field forming source of high AC voltage is connected between the plasma generators, to form a main field in the charging space, and intermittently operating corona generating high voltage power sources are coupled to apply high voltages to the respective corona discharge electrodes only when the plasma generators have relative specific polarity, whereby only particles of one polarity are driven into the charging space. The intermittent corona generating high voltage source has a frequency equal to or greater than the frequency of the AC voltage which provides the main AC field.

Abstract: A capacitive signal dependent upon a quantity being measured is produced by capacitive sensors of a radiosonde. An oscillator in the radiosonde has an output frequency, controlled by the capacitive signal, in the order of 1 to 10 MHz. The output frequency of the oscillator is divided by a factor of 2.sup.7. A high frequency transmitter in the radiosonde is frequency modulated by a frequencyf.sub.M1 =f.sub.M0 /dwherein f.sub.M1 is the output frequency of the divider and f.sub.M0 is the input frequency of the divider.

Abstract: A method in a paper machine press section for dewatering a wet paper web by threading the web in an improved way and avoiding crushing or stretching the web structure through at least three nips of the press section. The invention is particularly characterized by following features of dewatering steps. The web while passing the press section through said three nips is all the time adhered to and supported by the surface of a felt or a roll without any open draws therebetween. Pressing the web in the first dewatering nip takes place between two felts and so the web is dewatered simultaneously through both sides of the web. Further dewatering and pressing steps take place in press nips which all are formed against a plain roll having a large diameter which enables a spacious location of the press rolls and their felts. Detaching the web from the surface of said plain roll for conducting the web into dryer section, takes place in a point allowing easy removal and handling of broke in case of a web break.

Abstract: The method of breaking down emulsions resides in that the emulsion is made to bubble through a coalescent matter of a pelletized polymeric material featuring its specific gravity below that of the lighter emulsion component, said matter being filled with said lighter component of the emulsion under process and being exposed to the effect of the field of centrifugal forces. The device for breaking down emulsions is in fact a centrifugal separator whose bowl has respective chambers for the lighter and the heavier emulsion components to collect, said chambers communicating with the bowl interior space. A perforated inlet sleeve is provided coaxially with the bowl axis for admission of the emulsion being broken down while the bowl interior is filled with the coalescent matter made of the pellitized polymeric material.

Abstract: The ram of the press is accelerated to an acceleration-terminating point whereat it attains a speed providing for the required energy of impact upon the work. During the acceleration, the velocity of the ram is measured, as well as the deviation of the actual point of attaining the required speed relative to the preset acceleration-terminating point. Depending on the value of this deviation, either the extent of the acceleration path is varied, with the acceleration value maintained constant, or else the acceleration rate is varied, with the acceleration path length remaining permanent. To effect control by varying the acceleration path length, the control system is provided with specific electric circuitry controlling a transmitter generating a signal sent to a solenoid-operated valve, to vary the latter's position so as to vary accordingly the approach portion of the ram's stroke, and thus to vary the acceleration path.

Abstract: In a control system and method which utilize at least two magnetically retentive bodies, each of which has a given magnetic domain orientation, preferably at least one of these bodies is supported by a supporting structure for movement or balance with respect to the other to assume due to its natural magnetic interaction with the other body a monostable position or force interaction providing between the bodies a first magnetic relationship which achieves a first effect which is monostable under the influence of random disturbances. A structure capable of temporarily creating a polarizing magnetic field of sufficient strength is utilized for changing at least one of the above magnetic domain orientations thereby eliminating the first magnetic relationship.

Abstract: A method is proposed by which defects in workpieces are detected magnetically, which method comprises the following steps being performed concurrently: scanning the test surface of a workpiece utilizing magneto-sensitive elements; magnetizing the workpiece perpendicularly to its test surface in the test zone; exciting magneto-sensitive elements; and measuring the tangential component of the magnetic field strength in the test zone. An apparatus for magnetically detecting defects in workpieces according to the proposed method comprises an electrical signal excitation/measuring unit and a detector. The latter has a housing which accommodates a core-type magnet rigidly fixed to it and adapted to be magnetized prependicularly to its working surface which mounts magneto-sensitive elements separated from each other and oriented in a prescribed manner. The elements connect each other and the electrical signal excitation/measuring unit as well.

Abstract: Apparatus for connecting a tanker to a marine tower comprising apparatus for mooring the tanker to the tower and apparatus for connecting a supply conduit on the tower to a receiver conduit on the tanker. A hose-pipe section is normally stored on the tanker at least in part on a rotary pulley located on the tanker in a manner such that one of the ends of the hose-pipe has connected to it a first connecting element which opens upwardly on the tanker deck. A boom on the tower capable of freely pivoting about the axis of the latter has attached to its free end a second connecting element adapted to cooperate with the first connecting element. A rope passes vertically through the second connecting element whose free end is attachable to the first connecting element to move the first connecting element towards or away from said second connecting element which remains substantially stationary.