firefly luciferase atp assay development for monitoring bacterial concentrations in water supplies

this research program was initiated to develop a rapid, automatable system for measuring total viable microorganisms in potable drinking water supplies using the firefly luciferase atp assay. the assay was adapted to an automatable flow system that provided comparable sensitivity with established methodology 100,000 bacteria per ml) and a..

solar energy program: protective solar collector systems from corrosion

corrosion by galvanic means is described and methods of fabrication which minimize this type of corrosion are discussed. minimizing corrosion at the design and operating stages of a solar heating system by properly choosing materials, coatings, and heat transfer fluids is considered

development of a high efficiency thin silicon solar cell

significant improvements in open-circuit voltage and conversion efficiency, even on relatively high bulk resistivity silicon, were achieved by using a screen-printed aluminum paste back surface field a 4 sq cm 50 micron m thick cell was fabricated from textured 10 omega-cm silicon which had an open-circuit voltage of 595 mv and amo conver..

development of simplified process for environmentally resistant cells. final report

a program to develop a simple, foolproof, all-vacuum solar cell manufacturing process which can be completely automated and which results in medium efficiency cells which are inherently environmentally resistant is described. all components of the completed cells are integrated into a monolithic structure with no material interfaces. the ..

development of copper sulfide/cadmium sulfide thin film solar cells third technical progress report, 13 january-12 april 1980

during the course of this quarter, peak cell performance has been improved from 0.455v to 0.510v, from 11.8 to 20.2 ma/cm exp 2 and from 3.3 to 6.5 as regards open circuit voltage, short circuit current density and conversion efficiency, respectively. information exchanges and critical reviews of process details have been made with the co..

liant de lessive sulfitee a base d'ammonium utilise dans la fabrication des panneaux gaufres (ammonium based spent sulfite liquor as binder for panel products), / reprint: liant de lessive sulfitee a base d'ammonium utilise dans la fabrication des panneau

the document explains that: ammonium based spent sulfite liquor from softwoods or hardwoods can be used without chemical modification as a thermosetting binder for making waferboard. a binder content of 4 percent is sufficient to produce poplar waferboard which will meet the requirements set by the canadian standards association (can 3-01..

production of insulated footwear using liquid injection molding equipment. 2. instruction manual

a manufacturing line has been designed, fabricated and installed to produce finished lightweight insulated footwear from liquid injection molded expanded polyurethane. the minimum production rate is sixty pair of boots per week, utilizing the equipment one shift per day, five days per week. these boots will meet established design criteri..

ultrasonically assisted machining of aircraft parts

a tool post for ultrasonic activation of cutting tools on a turret lathe was designed, fabricated and given preliminary evaluation on a leblond engine lathe, turning difficult-to-machine wrought metal alloys, including esr 4340 steel, 4340 steel, 9310 steel, 17-4 ph steel, several titanium alloys and refractaloy 26. with the ultrasonic as..

graphite fiber surface treatment to improve char retention and increase fiber clumping

composites containing carbon and graphite fibers can release fibers into the atmosphere during a fire. this release can potentially cause failure in some types of electrical equipment. reduced fiber dispersion during and after combustion will reduce risks. epoxidized char forming systems were synthesized which will react with commercially..

improving delamination resistance of multilayer printed wiring boards

bendix has incorporated black oxide innerlayer surface treatment and dry nitrogen prepreg conditioning into the manufacturing process for multilayer pwbs. before these changes, interlaminar adhesion was marginal and delaminations regularly occurred during solder dipping and leveling. since the implementation of these changes, bendix has n..