The (R) or (S) isomer of acetorphan or N-/2-acetylthiomethyl)-1-oxo-3-phenylpropyl/(S) alanine methyl ester is prepared by splitting of racemic acetylthio-2-benzylpropanoic acid by reaction with ephedrin, separation of the enantiomeric salt obtained, then freeing of the acid and coupling with the corresponding amino acid ester. The obtained preparations possess remarkable therapeutic activities an...

An improvement in lead-acid batteries is disclosed. The improvement is directed toward construction of a lead-acid rechargeable battery in which bipolar positive and negatives plates (biplates) share the same grid or substrate. According to the present invention, such biplates are stacked upon each other, separated by interleaved, highly porous glass mat separators. These substratea positioned bet...

According to a method and a device for determining the orientation of a vehicle relative to a guidance loop (L) a loop signal (SL) is generated by a signal generating device. The loop signal has at least two main electrical states. The vehicle may exhibit a first and second orientation, the second orientation being opposite to the first, relative to the guidance loop (L). The loop signal (SL) is s...

According to a method and a device for determining the orientation of a vehicle relative to a guidance loop (L) a loop signal (SL) is generated by a signal generating device. The loop signal has at least two main electrical states. The vehicle may exhibit a first and second orientation, the second orientation being opposite to the first, relative to the guidance loop (L). The loop signal (SL) is s...

A buoyant article which can be used for floatation and/or insulation comprising a fibrous structure of a multiplicity of resilient, shape reforming, elongatable, nonlinear carbonaceous fibers and a coating for said carbonaceous fibers comprising a water insoluble, hydrophobic, cured or set material.

A flexible oriented plastic sheet has a high tensile strength and is resistant to corrosion and highly resistant to splitting when penetrated by a pointed article. The flexible oriented sheet can be cut into desired shapes and sizes so as to be useful in a variety of applications, such as roofing batten bars and fencing materials, which require high resistance to splitting and fastener pull-throug...

An automatic running work vehicle in which both front wheels 2 and rear wheels 3 can be steered and which is provided with a follower sensor A for detecting the boundary between an unworked area and a worked area and an orientation sensor 5 for detecting the running direction so as to run automatically along the boundary. Based on the result of detection of the boundary by the follower sensor and ...

PURPOSE:To prevent the air flowing in a drip bottle from migrating into a liquid extraction tube at the time of use by providing an air guide member integrally formed along with a funnel-shape hermetic seal film membrane in an airtight manner and guiding the air flowing in through the water-repellent porous filter member of a vent part at the time of use toward the bottom part of the drip bottle. ...

Device making it possible for a moving object using kinetic energy completely to sweep a delimited surface which is encumbered with obstacles. The moving object 2, equipped with a motor gyroscope 4, is fitted with contacts 3 at its periphery, which, in collaboration with a wire 1, delimiting the area to be swept, allow the said moving object to be guided in association with the gyroscopic moment w...

A flexible oriented plastic sheet has a high tensile strength and is resistant to corrosion and highly resistant to splitting when penetrated by a pointed article. The flexible oriented sheet can be cut into desired shapes and sizes so as to be useful in a variety of applications, such as roofing batten bars and fencing materials, which require high resistance to splitting and fastener pull-throug...

The invention relates to a method and apparatus for controlling writing to a memory. The apparatus comprises control means (1-8) for the formation of a memory activation signal (C &cir& NOt E &cir& NOt ) in response to the applying of a predetermined key code to the control means, the control means comprising timer means (2) which are started by applying the key code and which prevent the formati...

A process of producing a cross-linked polymer product (1) by multilayer technique is disclosed, said product incorporating at least one silane group-containing polymer layer (2, 4) cross-linked by means of a catalyst. The cross-linked polymer product consists of a multilayered film. In the process, the catalyst is introduced into a layer (3) at or adjacent the layer or layers (2, 4) to be crosslin...

A process of producing a cross-linked polymer product (1) by multilayer technique is disclosed, said product incorporating at least one silane group-containing polymer layer (2, 4) cross-linked by means of a catalyst. The cross-linked polymer product consists of a multilayered film. In the process, the catalyst is introduced into a layer (3) at or adjacent the layer or layers (2, 4) to be crosslin...

An improved process for the preparation of acrylonitrile by the reaction of propylene, ammonia and oxygen in a fluidized catalyst bed in which the propylene and ammonia are premixed and fed in downwardly streams that are directly aligned with upwardly directed streams of an oxygen containing gas under conditions such that there is complete mixing of the gas streams prior to the gases having signif...

PURPOSE:To bring a wiring for an IC to a superconductive state, and to reduce the loss of currents while enabling operation at high speed by forming a composite oxide superconductive layer shaped onto an oxide substrate and a semiconductor single crystal layer formed onto the superconductive layer. CONSTITUTION:A semiconductor substrate is formed of a composite oxide superconductive layer shaped o...

PURPOSE:To bring a wiring for an IC to a superconductive state, and to reduce the loss of currents while enabling operation at high speed by forming a composite oxide superconductive layer shaped onto an oxide substrate and an Si single crystal layer formed onto the superconductive layer. CONSTITUTION:A semiconductor substrate is formed of a composite oxide superconductive layer shaped onto an oxi...

PURPOSE:To bring a wiring for an IC to a superconductive state, and to reduce the loss of currents while enabling operation at high speed by forming a semiconductor layer shaped onto an Si single crystal substrate and composed of materials except Si and a composite oxide group superconductive material layer formed onto the semiconductor layer. CONSTITUTION:A semiconductor substrate is formed of a ...

The adhesion of polyolefin objects, in particular highly oriented polyethylene filaments, to, for instance, polar matrices is improved by oxidizing the surface of the objects and then treating it with a solution of a silane compound, a titanate or a chromium complex.