Abstract: Macrocyclic antibiotics having ring structures with at least 10 members act as separation agents in crystallization, precipitation, filtration, electrophoresis and chromatography. The macrocyclic antibiotics include ansamacrolides, macrolides, macrocyclic peptides, polyenes and derivatives thereof. The process has been found to be especially advantageous for separation of optical isomers by electrophoresis and chromatography.

Abstract: A method and apparatus for separating suspended solid particles and/or fluid droplets from a body of liquid is described. Fluid is caused to flow through at least one helical flow path defined between axially facing surfaces of a number of conical helical plates. Preferably, a substantially vertical flow channel of circular cross-section has disposed therein at least one conical helical plate with a diameter substantially equal to that of the flow channel. The conical helical plate or plates are arranged coaxially in the flow channel and define at least one helical flow path coaxial with the flow channel between axially facing surfaces of the plate or plates. The plate or plates are preferably capable of rotating about the axis of the flow channel, and may be driven. While they may be driven at a greater or lesser speed, they are preferably driven at a speed so as to approximately correspond with the flow rate of the liquid.

Abstract: A lift column suitable for use in a patient rest or operating table, or for industrial applications, is disclosed. The lift column is a simple compact structure without service members or other elements extending laterally beyond the confines of the lift column. The maximum travel of the lift column is greater than the structural height of the column. Furthermore, the patient rest or operating table can be swung about two horizontal axes which are perpendicular to each other.

Abstract: A cyclodextrin which when added to water produces a haze-free solution is made by the use of starch which contains at least about 90% amylopectin in a two-stage process wherein first a starch hydrolysate is formed by means of an alpha-amylase or an acid and a second subsequent step wherein the cyclodextrin is formed by means of a cyclodextrin-glycosyl-transferase.

Abstract: A two-step process for converting ginkgolide C into ginkgolide B is disclosed. In the first step, ginkgolide C is reacted with a sulfonic anhydride to obtain a C-7 sulfonate of ginkgolide C. In the second step, the C-7 sulfonate of ginkgolide C is reacted with a borohydride, and this reaction eliminates the C-7 radical of the C-7 sulfonate of ginkgolide C, thus producing ginkgolide B.

Abstract: The present invention relates to a method for recovering iron chloride, aluminum chloride and calcium chloride from silicon and ferrosilicon or from residues which contain silicon and/or ferrosilicon and metal chlorides and optionally copper and/or copper compounds, which materials are leached with HCl or HCl+FeCl.sub.3 /FeCl.sub.2 solutions, whereafter the solid silicon or ferrosilicon residue is removed from the leach solution and where any copper is removed from the leach solution. Fe.sup.2+ in the leach solution is oxidized to Fe.sup.3+ whereafter the leach solution is subjected to a liquid-liquid extraction by means of an organic phase containing n-tributyl phosphate dissolved in a hydrocarbon solvent in order to extract FeCl.sub.3 and at least a part of CaCl.sub.2 from the leach solution, stripping FeCl.sub.3 and any CaCl.sub.2 from the organic phase by water, concentrating the remaining solution by evaporation and adding HCl gas to the solution in order to selectively precipitate AlCl.sub.3.6H.sub.

Abstract: The present invention relates to a method for grain refining of aluminium and aluminium alloys wherein a siliconboron alloy containing between 0.01 to 4.0 % by weight of boron is added to molten aluminium or aluminium alloy in such an amount that the resulting melt of aluminium or aluminium alloy contains at least 50 ppm boron. The invention further relates to a grain refining alloy for aluminium and aluminium alloys which grain refining alloy is a siliconboron alloy containing between 0.01 and 4.0 % by weight of boron.

Abstract: The structural part is used in an electolytic cell for production of aluminum and comes into contact with the gas atmosphere in the electrolytic reduction cell. The structural part is made completely from, or is a metal part which is coated with, a concrete composition of 15-30% by weight of a hydraulic cement, 5-10% by weight of microsilica and 65-85% by weight of a refractory filler material.

Abstract: Improved bottle extractor for hollow glass molding machines of the type consisting of a mechanical arm for transfer of the hollow glass, with a stepping motor whose output shaft connects directly with the drive shaft of the mechanical arm, the motor being insulated from the rest of the extractor by means of a sheet of thermal insulating material and with a position detector based on the effect produced by an integral plate that has the same axis of rotation as the drive shaft.

Abstract: The invention relates to a novel configuration of a transport means (5) for a controlled, striding motion along a substrate (14), having several striding elements each comprising a standing or foot element capable of being lowered and raised, respectively, for placement in contact with and removal from contact with the said substrate by means of a lift element (12) in a first axial direction, and having servo links (10) acting between the striding elements (9) to generate a linear relative motion in each instance between two striding elements (9) within a preassigned travel in an axis of motion.

Abstract: The shortening substitute contains a mixture of 1-10% by weight pregelatinized, unmodified starch; 5-15% by weight pregelatinized, modified high amylopectin starch; 5-10% by weight emulsifier; 5-25% by weight shortening; and a remainder of water. The modified, high amylopectin starch is either a crosslinked, hydroxypropylated starch or a crosslinked, esterified starch, both of which have an amylopectin content of 95% or more. Plasticizer in an amount of 0.1-1% by weight and a maltodextrin in an amount of 1-20% by weight can be incorporated into the mixture. The shortening substitute can be used as a replacement for conventional shortening in a baked good and is especially suited for use as a roll-in shortening for laminated pastries.

Abstract: A sol and foodstuff containing a substantially pure starch extracted from a starch bearing plant having a waxy, waxy, amylose extender genotype is disclosed. Maize is the preferred plant.

Abstract: Chemically modified cyclodextrins such as hydroxypropyl cyclodextrins are purified by treatment with an activated carbon made from either coal or coconut shells. The amount of activated carbon used is 50% to 300% by weight of modified cyclodextrin. The treatment removes organic impurities such as glycol introduced during the chemical modification process of the cyclodextrin. The treatment step is conducted by passing an aqueous solution of the unpurified modified cyclodextrin through a column packed with the activated carbon or by adding the activated carbon to a container of the unpruified modified cyclodextrin and mildly agitating the contents of the container to remove the impurities.

Abstract: A method of making microballs is disclosed. An active ingredient, a biocompatible polymer and a supporting phase, such as silicone oil, are stirred at a temperature above the Tg of the polymer and below the temperature at which any of the ingredients vaporizes or degrades. Stirring is continued until microballs of the desired diameter are formed, whereafter the mixture is cooled and the microballs are separated from the supporting phase. The microballs are substantially spherical, substantially smooth on their external surface and have substantially no active ingredient on their external surface.

Abstract: An insecticide dispenser that has a safety device such that when there is a loss of power, the inlet and outlet ports of the dispenser are shut to prevent loss of insecticide. A heater is positioned in the dispenser near the air inlet port to heat the incoming air before it comes in contact with the insecticide. The dispenser has a test mechanism to test the dispenser and insure it is working properly. The timer of the dispenser allows for setting a start time and a period of time that the dispenser is active.

Abstract: The immobilized enzyme for removal of residual cyclodextrins is either a combination of an alpha-amylase and a CGTase which has been immobilized or a fungal alpha-amylase which has been immobilized. In addition to either the fungal alpha-amylase or the CGTase and alpha-amylase, a debranching enzyme can also be employed. When using a debranched enzyme, the debranched enzyme is also immobilized. By using the immobilized enzyme, the step of inactivating the enzyme is eliminated and the contamination due to the inactivated enzyme is also eliminated.

Abstract: The puncture proof surgical glove employs a rolled, warp knitted material to prevent punctures. The rolled, warp knitted material is made from solid filaments having a diameter of 0.03 to 0.004 inches, a tensile strength greater than 690,000 kPa and a modulus of elasticity less than or equal to about 205,000 MPa. The rolled, warp knitted material is made from the filaments which are helical in shape and interlocking such that the helical filament has an inside diameter of 0.008 inches, an outside diameter of 0.018 inches, a pitch of 0.034 inches, and a thickness of 0.037 inches. The warp knitted material is rolled such that it is flattened to a thickness of 0.025 inches.

Abstract: There is described a burner for vegetable matter such as straw or the like, comprising a combustion chamber (9) having an upstream and a downstream end, a blower (6) discharging air and cut vegetable matter into the upstream end of the combustion chamber, an igniter (10) positioned at the upstream end of the combustion chamber, and a number of screens (14, 15, 16) extending across the combustion chamber and spaced from each other in the flow direction, the mesh size of the screens decreasing in the flow direction. The burner is used, inter alia, in a soil steriliser and stubble burner which comprises a chassis, a pick-up device (1) to collect a swath of vegetable-matter from the ground, a feed device (2, 3, 4) to feed the vegetable matter to a chopper (5) and a blower to transport the vegetable matter to the upstream end of the combustion chamber of the burner, the combustion gases from the burner being directed via a discharge device (11) onto the surface of the ground.

Abstract: A process for preparing cyclooctaamylose by enzymatic reaction of starch hydrolysate with cyclodextrin glycosyltransferase in the presence of at least two complexing agents. The first is either an aliphatic ketone or an aliphatic alcohol and the second is a cyclic compound which has 12 atoms.