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A combustible mixture is compressed in the crankcase of a four-stroke cycle engine and forced into a boost plenum which houses the camshaft. The compressed mixture is metered by a throttle to intake valves of the engine. The engine is constructed from identical engine block elements rotated and joined to enclose centrally disposed crankcase and common boost plenum with the cylinders horizontally o ...

APPLICATION OF BIOTECHNOLOGY TO THE PRODUCTION OF 4-HYDROXYBENZOCYCLOBUTENE WILL ALLOW BULK MANUFACTURE OF THIS POLYMER PRECURSOR BY MORE ECONOMICAL MEANS THAN IS CURRENTLY AVAILABLE. DEVELOPMENT OF SUCH A PROCESS WOULD ALLOW INDUSTRIAL APPLICATIONS OF BCB-BASED POLYMER MATERIALS.

SPACE STRUCTURES REQUIRE PROTECTION FROM DISASTEROUS IMPACTS OF METEOROID AND MAN-MADE SPACE DEBRIS POPULATIONS. LIMITATIONS ON EXPERIMENTS CREATES A NEED FOR A THEORETICALLY-SOUND BASIS FOR EXTRAPOLATION TO FASTER AND LARGER IMPACTING PARTICLES. THIS RESEARCH WILL DEVELOP THE THEORETICAL FOUNDATIONS FOR THE POWER-LAW SCALING RELATIONS COMMONLY USED. THE PRIMARY BASIS FOR THOSE FORMS IS A SINGLE S ...

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THIS PROJECT PROPOSES TO DEVELOP A TELEROBOTIC CONTROL GLOVE (TCG) FOR THE CONTROL OF ROBOTIC DEXTROUS HANDS. THE GLOVE WILL BE CAPABLE OF CONTROLLING BOTH THE POSITION OF AND THE FORCES EXERTED BY THE FINGERS OF THE ROBOTIC HAND. FEEDBACK OF BOTH TACTILE AND FORCE INFORMATION WILL BE PROVIDED TO THE OPERATOR. THE SYSTEM WILL BE EASILY INTEGRABLE WITH TELEROBOTIC ARM CONTROL SYSTEMS. THE TCG WILL ...

ORBITEC PROPOSES TO DEVELOP A MEANS TO PRODUCE AND UTILIZE SOLID OXIDIZERS IN A COMBUSTION CHAMBER. CONDENSION GASEOUS OXYGEN DIRECTLY TO THE SOLID STATE APPEARS AN INTRACTABLE APPROACH BECOUSE OF LOW DENSITY OF THE FROST FORMATION. RAPID FREEZING FROM THE LIQUID PHASE HOWEVER, ASSURES A DENSE, COHERENT SOLID PHASE FORMATION. TO SIMPLIFY DELIVERY TO THE COMBUSTION CHAMBER, WE PROPOSE TO USE THE CO ...

PESTICIDE USE ON PLANT CROPS POSE LONG-TERM HARMFUL EFFECTS TO HUMAN HEALTH AND THE ENVIRONMENT. THE U.S. FOREST SERVICE, PACIFIC NORTHWEST REGION, IN A DRAFT ENVIRONMENTAL IMPACT STATEMENT (1989) HAS ADOPTED A PEST MANAGEMENT POLICYWHICH GIVES PREFERENCE TO NON-CHEMICAL CONTROL MEASURES. RELIABLE, NON-CHEMICAL CONTROL IS NOT AVAILABLE FOR FUNGAL ROOT DISEASES OF CONIFER SEEDLINGS, THEREFORE CHEMI ...

SUPERPLASTIC FORMING (SPF) IS AN ADVANCING METHOD FOR THE FABRICATION OF COMPLEX METAL SHAPES FROM ALUMINUM AND TITANIUM ALLOYS AS WELL AS NEW SPECIALTY ALLOYS. THE UTILIZATION OF SPF RESULTS IN COMPLEX SHAPES MADE OF FEWER PARTS, HENCE, LIGHTER WEIGHT, IMPROVED PROPERTIES AND EXTENSIVE COST SAVINGS OVERALL. HIGH TEMPERATURE ALLOY FABRICATION WILL REQUIRE DIES CAPABLE OF WITHSTANDING TEMPERATURES ...

THIS PROPOSED PROJECT WILL CREATE A SERIES OF SKILL-BUILDINGMATERIALS AIMED AT MEETING THE SPECIAL NEEDS OF BLIND STUDENTS STUDYING MATHEMATICS. MANY EXPERTS HAVE POINTED TO BRAILLE SKILLS AS CENTRAL TO EDUCATIONAL PROGRESS FOR BLIND STUDENTS; SKILL IN USING NEMETH CODE (THE BRAILLE CODE FOR MATHEMATICS AND SCIENCE NOTATION) IS ESPECIALLY CRUCIAL FOR PROGRESS IN MATH AND SCIENCE. RECENT TRENDS IN ...