Operator's manual : tester, airflow, gas-particulate filter unit, M39 (NSN 6680-00-436-4212).

"15 November 1983."

Operator, organizational, direct support, and general support maintenance manual for tester, fuel injector pump : single end drive, 150 to 3600 RPM (4910-01-037-9417) and adapter kits, fuel injector : American Bosch APE-6BB (4910-01-005-2850), American Bosch PSB-6A and PSB-6 (4910-01-005-2851), American Bosch PSB-12BT (4910-01-005-2852), Simmonds SU (4910-01-005-2853), International Harvester 3200 (4910-01-006-3073), American Bosch PSJ-6A (4910-01-006-3072), Caterpillar (4910-01-005-2854), Roosa Master (4910-01-005-2855), and Cummins (4910-00-763-7495).

Description based on vol. 1.

Operator and organizational maintenance manual (including repair parts and spoecial tool lists) : tester, diesel fuel injector nozzle (Bacharach Industrial Instrument Company model YFL) (4910-255-8641) with connector set 44 (Bacharach part number 65-275) (4910-955-5517) and connector set (ORD DWG B11020498) (4910-955-5516).

"October 1963."

Operator and organizational maintenance manual (including repair parts and special tool lists) : tester, engine distributor, bench type, 6, 12, and 24-volt distributors, single-phase, 60-cycle, 115-volt (Heyer Products Company Inc., model 168) (4910-392-2939).

"30 September 1963."

Operator, organizational, direct support, and general support maintenance manual for tester, fuel injector pump : single end drive, 150 to 3600 RPM (4910-01-037-9417) and adapter kits, fuel injector : American Bosch APE-6BB (4910-01-005-2850), American Bosch PSB-6A and PSB-6 ....

"May 1982"--Vol. 1.

General support maintenance repair parts and special tools list : T-283 pressurized container leakage tester, T-298 atomic weapon valve extension.

"21 September 1970."

Operator, organizational, field, and depot maintenance manual : tester, fuel quantity gage, type MD-1.

"June 1960."

Operator's manual : AN/USM-465A test set, digital card tester (NSN 6625-01-126-2473).

Includes index.

The cow tester's manual /

Also issued in mimeographed form in 1936, 1937 and 1940, as U.S. Bureau of dairy industry, BDIM-699.

Depth of cure and surface microhardness of composite resin cured with blue LED curing lights

Objectives. This study examined the depth of cure and surface microhardness of Filtek Z250 composite resin (3M-Espe) (shades B1, A3, and C4) when cured with three commercially available tight emitting diode (LED) curing lights [E-light (GC), Elipar Freelight (3M-ESPE), 475H (RF Lab Systems)], compared with a high intensity quartz tungsten halogen (HQTH) light (Kerr Demetron Optilux 501) and a conventional quartz tungsten halogen (QTH) lamp (Sirona S1 dental unit). Methods. The effects of light source and resin shade were evaluated as independent variables. Depth of cure after 40 s of exposure was determined using the ISO 4049:2000 method, and Vickers hardness determined at 1.0 mm intervals. Results. HQTH and QTH lamps gave the greatest depth of cure. The three LED lights showed similar performances across all parameters, and each unit exceeded the ISO standard for depth of cure except GC ELight for shade B1. In terms of shade, LED lights gave greater curing depths with A3 shade, while QTH and HQTH tights gave greater curing depths with C4 shade. Hardness at the resin surface was not significantly different between LED and conventional curing lights, however, below the surface, hardness reduced more rapidly for the LED lights, especially at depths beyond 3 mm. Significance. Since the performance of the three LED lights meets the ISO standard for depth of cure, these systems appear suitable for routine clinical application for resin curing. (C) 2003 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

Microhardness mapping and the hardness-yield strength relationship in high-pressure diecast magnesium alloy AZ91

Microhardness maps of cross-sections of high-pressure diecast test bars of AZ91 have been determined. Specimens with rectangular cross-sections, 1, 2 and 3 mm thick, or with a circular cross-section 6.4 mm in diameter, have been studied. The hardness is generally higher near the edges in all specimens, and more so near the corners of the rectangular specimens. The hardness at the center of the castings is generally lower, due to a coarser solidification microstructure and the concentration of porosity. The evidence confirms that the surface of the castings is harder than the core, but it does not support the concept of a skin with a sharp. and definable boundary. This harder layer is irregular in hardness and depth and is not equally hard on opposite sides of the casting. The mean hardness obtained by integrating the microhardness maps over the entire cross-section increased with decreasing thickness of the bars, and was found to be in good correlation with each bar's yield strength. (c) 2005 Elsevier B.V. All rights reserved.

Visoelastic studies on thermoplastic polyurethane nanocomposites using a nano-hardness tester

The viscoelastic behaviour of a range of polyurethane thermoplastic elastomer montmorillonite nanocomposites has been studied using a nanohardness tester. For softer Shore hardness 80A materials, the introduction of the organo-clay increased the creep strain obtained while the nano-indentor was held at constant load. The increase in creep strain was greatest for materials containing an organo-clay modified with a more hydrophilic quaternary alkylammonium surfactant and with higher loadings of the hydrophilic organo-clay. This suggested the effect might be due to a plasticising effect of the excess surfactant. For the harder Shore hardness 55D materials, the addition of the organo-clays produced only a small decrease in the creep strain, probably due to the interconnected hard domains in this material.

Abrasion resistance of fibre reinforced concrete floors

This thesis focuses on the investigation of the abrasion resistance of fibre reinforced concrete floors at both the macro and micro levels. A literature review of the available literature concerning subjects allied to the current project is included. This highlights themes relevant to wear mechanisms and the factors influencing it: factors that affect the abrasion resistance of concrete and several test methods for assessing it; and the historical development of fibres and the properties of different fibre types and their influence on concrete. Three accelerated abrasion testers were compared and critically discussed for their suitability for assessing the abrasion resistance of concrete floors. Based on the experimental findings one accelerated abrasion apparatus was selected as more appropriate to be used for carrying out the main investigations. The laboratory programme that followed was undertaken to investigate the influence of various material and construction factors on abrasion resistance. These included mix variations (w/c ratio), fibre reinforcement, geometry, type and volume, curing method and superplasticizing agents. The results clearly show that these factors significantly affected abrasion resistance and several mechanisms were presumed to explain and better understand these observations. To verify and understand these mechanisms that are accountable for the breakdown of concrete slabs, the same concrete specimens that were used for the macro-study, were also subjected to microstructutural investigations using techniques such as Microhardness examination, Mercury intrusion porosimetry and Petrographic examination. It has been found that the abrasion resistance of concrete is primarily dependent on the microstructure and porosity of the concrete nearest to the surface. The feasibility of predicting the abrasion resistance of fibre reinforced concrete floors by indirect and non-destructive methods was investigated using five methods that have frequently been used for assessing the quality of concrete. They included the initial surface absorption test, the impact test, ball cratering, the scratch test and the base hardness test. The impact resistance (BRE screed tester) and scratch resistance (Base hardness tester) were found to be the most sensitive to factors affecting abrasion resistance and hence are considered to be the most appropriate testing techniques. In an attempt to develop an appropriate method for assessing the abrasion resistance of heavy-duty industrial concrete floors, it was found that the presence of curing/sealing compound on the concrete surface at the time of accelerated abrasion testing produces inappropriate results. A preliminary investigation in the direction of modifying the Aston accelerated abrasion tester has been carried out and a more aggressive head has been developed and is pending future research towards standardisation.

Smart Portable Tester for Bird Flue Express-Diagnostics: Principles of Design

In the V.M. Glushov Institute of Cybernetics of National Academy of Sciences of Ukraine in collaboration with O.V. Palladin’s Institute of Biochemistry of National Academy of Sciences of Ukraine the smart portable device for express-diagnostics of acute viral infections, including bird flu, is designed. The device is based on the effect of surface plasmon resonance. The principles of device are described in the article.