Text and graphics are recursively (includes iteratively) distributed among a set of balanceable columns capable of receiving text and graphics. The recursive distributions are at successively varying columnar depths (all columns in each recursion have a common target depth), upon completing each recursion, the difference between the resulting shortest and longest column depths is measured and comp...

The preparation of monolayer blown nylon films on equipment conventionally used in the manufacture of blown polyethylene film is facilitated by the intimate admixture of a minor proportion by weight of a random ethylene/ethylenically unsaturated carboxylic acid copolymer into the nylon resin composition from which said blown nylon film is to be manufactured.

A method of well logging utilizing gamma radiation serves to measure the thickness of the casing in a well borehole. The photoelectric absorption by the iron in the casing of gamma rays scattered from the formation varies as a function of the energy of the gamma radiation. The detected gamma spectrum below about 350 KeV from the surrounding earth formation is preferably divided into two energy ran...

The present invention relates to polystyrylpyridine-type resins having increased toughness, and composite materials containing these resins. The resin of the invention contains a polycondensation product of at least two reactive methylated substituents, the said resin having the following general formula (I): Ux Vy Wz in which: U denotes the grouping V denotes the grouping

Particulate polyimide molding resin characterized by high surface area and low crystallinity and molded articles prepared therefrom having unusually high toughness.

An optical system for use with an optical memory including an optical arrangement for separating light reflected from the surface of the optical memory into a plurality of different resultant beams. This optical mechanism comprising four reflecting surfaces each of which are inclined at a different angle relative the optical memory to direct the resultant beams of light each in a different directi...

A drive mechanism for a domestic vibration-type apparatus is provided, in which the rotor shaft (19) of a single-phase synchronous motor drives a cam-and-follower mechanism which converts the rotary motion of the rotor into a vibratory motion, the rotor and the stator having a main field direction (22) and (16), respectively. The longitudinal axis of the mirror-symmetrical cam extends at an angle ...

An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has a high degree of dimensional stability and exhibits minimal shrinkage during curing and/or aging.

An improved method of multiple-stage hydraulic fracturing of coal seams to improve the rate and total recovery of gas therefrom. In one aspect, the improvement comprises completing the well with 7-inch or larger casing and 3-1/2 inch or larger tubing. In another aspect, the stagewise fracturing is continued until the following quantity of 60-140 mesh proppants has been deposited in the formation: ...

A two-fluid nozzle for atomising a liquid-solid slurry comprises a first conduit (12) through which an atomizing gas flows and a second conduit (20) located within the first conduit. The liquid-solid slurry to be atomized flows through the second conduit (20). The first conduit (12) has a reduced portion which causes an increased in velocity of the gas passing therethrough. This reduced portion te...

In order to make possible precisely controlled and reliable operation of the rotors of a neutron chopper each rotor is to be driven by a hysteresis motor, whose rotor is in the form of a hollow cylinder. The attachment of each drive rotor to the one end of the rotor is by way of a non-magnetic disk or ring which is screwed to the lower end of the rotor or the top end thereof in accordance with the...

A method of forming a resistor comprises forming a conducting layer on a substrate. An area of the layer is removed such as by etching. A resistor portion is formed in the area. The conducting layer including the resistor portion can be p-Si. The substrate can comprise an insulator such as Al2O3 and a barrier layer can be formed on the substrate to achieve improved radiation hardening.

A helicopter has two engines adapted to drive a main sustaining rotor and a plurality of auxiliary propulsion means through a transmission system that is selectively operable to vary the relative speeds of rotation of the sustaining rotor and the auxiliary propulsion means depending upon operating conditions.

Bubble formation at the interface between an organosiloxane gel that is curable by a hydrosilation reaction and a substrate possessing potential nucleation sites for bubbles can be prevented if the substrate is first coated with an uncured extrudable silicone rubber composition that is curable by hydrosilation reaction in addition to being compatible with and adherent to the gel. The gel is then a...

The substitution chlorination reactions of organic compounds are carried out by means of molecular chlorine, using, as a radical initiator, decachlorobutane or an octachlorobutane such as octachlorobut-1-ene or a mixture containing these two products. Good degrees of conversion and good yields are obtained at moderate temperatures. The process is, for example, applicable to the substitution chlori...

A plurality of intelligent work stations are provided access to a shared memory through a switching hierarchy including a first array of mapping boxes for receiving a first address from an intelligent work station and including a virtual address and offset and for converting the virtual address into a terminal switch port designation and logical address, a first switch for forwarding the logical a...

A magnetic-polymer particle, useful in immunoassay techniques and various other biological/medical applications is produced by coprecipitation of transition metals in the presence of a polymer having available coordination sites. These particles are capable of forming stable aqueous suspensions and may be easily resuspended after agglomeration.

Gas-gas type heat exchanger using the principle of interconnected fluidized beds. It comprises a cylindrical or polygonal vertical tubular container which is vertically and radially divided into at least four adjacent compartments communicating between each other (1, 2, 3, 4) of which at least two adjacent compartments form a cold part (1, 2) and comprising at least one cold gas discharge (7) and ...

PURPOSE:To drive a slewing base and a working base synchronously by connecting an outer gear for turning the slewing base above a mobile vehicle with an outer gear below the working base provided in a freely turnable manner biasedly above the slewing base by an intermediate shaft with a pinion. CONSTITUTION:A horizontally turnable slewing base 14 is provided above a mobile vehicle 10, and a workin...

PURPOSE:To mix a high viscosity fluid or powder, by inserting a mixing element having a spiral blade in a housing to fix the same and providing openings to the aforementioned spiral blade so as to allow the adjacent spiral stages to communicate with each other. CONSTITUTION:A mixing element 14 contains the element shaft 16 fixed to a seal wall 12 at one end thereof and a spiral blade 18 provided t...