Friday

A Comparison of Tension Test Data Using ASTM D 638 and ISO 527 

Reference Friday, M. J., A Comparison of Tension Test Data Using ASTM D 638 and ISO 527, Limitations of Test Methods for Plastics, ASTM STP 1369, J. S. Peraro, Ed., American Society for Testing and Materials, West Conshohocken, PA, 2000. 

Keywords thermoplastics, tensile properties, interlaboratory testing, ASTM D 638, 

ISO 527, ABS, PBT, polycarbonate, polystyrene, tensile stress at yield, tensile stress at break, elongation at yield, modulus of elasticity 

The technical differences between ASTM Tensile Properties of Plastics D 638 and ISO 527-1 2 Plastics Determination of Tensile Properties include specimen dimeiisions (Table 1), speeds of testing, and modulus of elasticity calculations. Each of these conditions can affect the test results in Afferent ways and to varying degrees. By measuring the tensile properties of ASTM and ISO specimens molded firom the same thermoplastic resins, the relationship between the ASTM D 638 and ISO 527 test methods was studied. Since the ASTM D 638 and ISO 521 test methods are technically different the summary statistics from these test methods are viewed as two distinct populations. Therefore, descriptive statistics rather than inferential statistics were used in this comparison. No attempt was made to determine if the results from the two test 

---

King, 1971 Naphtali and Sandholm, 1971 Newman, 1963 and Tomich, 1970). Moreover the choice of appropriate computation procedures for distillation, absorption, and extraction is highly dependent on the system being separated, the conditions of separation, and the specifications to be satisfied (Friday and Smith, 1964 Seppala and Luus, 1972). The thermodynamic methods presented in Chapters 3, 4, and 5, particularly when combined to... 

Introduction The following example data are used throughout this subsection to illustrate concepts. Consider, for the purpose of illustration, that five synthetic-yarn samples have been selected randomly from a production line and tested for tensile strength on each of 20 production days. For this, assume that each group of five corresponds to a day, Monday through Friday, for a period of 4 weeks ... 

Monday 1 Tuesday 2 Wednesday 3 Thursday 4 Friday 5 Groups of 25 pooled... 

It is possible (with lower initial Led temperature, higher initial loading, or higher regeneration temperature or pressure) for the transition paths to contact the saturated vapor curve in Fig. 16-22 rather than intersect beneath it. For this case, liquid benzene condenses in the Led, and the effluent vapor is saturated during part of regeneration [Friday and LeVan, AIChE]., 30, 679 (1984)]. 

Fig. 18-2. Surface chart for 06Z Friday, November 20, 1981. Contours are isobars of atmospheric pressure 12 is 1012 mb. Line with triangles, cold front line with semicircles, warm front line with both triangles and semicircles, an occluded front (a cold front that has caught up with a warm front). Wind direction is with the arrow wind speed is 10 knots for 1 barb, 5 knots for one-half barb. Small station circles indicate calm. H, center of high pressure L, center of low pressure.

Following an incident at one plant, it was found that the plant took this to mean that the authorized person must check the presence of the sources on Mondays to Fridays but not on weekends. However, each working day means each day the radioactive source is working, not each day the authorized person is working ... 

CERI is the focal point for the exchange of scientific and technical environmental information produced by the Office of Research and Development (ORD), its 12 research laboratories, and associated programs nationwide. Hours 8 00 a.m. - 4 30p.m., Monday - Friday EST,... 

Provides access to EPA information for United States and international requests, and has a range of information sen>-ices consisting of environmental and related subjects of interest to EPA staff, including online searching of commercial databases. The focus of the IRC collection is on environmental regulations, policy, planning, and administration. Hours 8 a.m. - 5p.m., Monday - Friday ESP... 

The central clearinghouse for the exchange of scientific, technical and public-oriented environmental information published by the Environmental Protection Agency. Provides copies of EPA documents and multimedia products upon request. It operates Monday through Friday, 7 30 a.m. -5 30p.m. EST. 

Assists state and local air pollution control agencies and EPA regional offices with technical matters pertaining to health, exposure, and risk assessment of air pollutants. Services are also extended to the general public, small businesses and international agencies. Thursday 8 00 a.m. to 5 00p.m., EST Friday 8 00 a.m. to 4p.m., EST. 

Provides information on handling, abatement, and management of asbestos in schools, the workplace, and the home. Hours 8 00 a.m. to 4 30p.m. Monday through Friday, EST. 

Monday through Friday, 9 00 a.m. to 5 00 p.m., EST. After hours, you may leave a voice message, or you may make inquiries via e-mail. 

Provides information on how levels of exposure of hazardous chemicals affect human health. Covers levels of exposure to hazardous chemicals below which no adverse health effects are expected to occur in various segments of the human population. The reference dose and carcinogenicity assessments on IRIS can sen>e as guides in e >aluating potential health hazards and selecting response to alleviate a potential risk to human health. Hours 8 00 a.m. to 4 40 p.m. EST, Monday - Friday. 

Maintains a data base which collects and classifies all of the information about air toxics control programs submitted by federal, state and local agencies. The information is organized by agency, pollutant and emission source. Serves state and local agencies and the public. Monday through Friday, 7 30 a.m. - 5 00p.m., EST. 

Plant and equipment that provides a service or is required to operate for 24 hours a day, 7 days a week presents a different proposition to the maintenance programming requirements. For example, a heating pump with a standby, which is required for a heating installation in an office with a set number of working hours from Monday to Friday. Alternative methods of maintenance programming may require the planner to allow for total replacement on plant failure or have available replacement units, so that when an item of plant or equipment fails, it is removed and a replacement installed. 

The work dockets would be normally issued on Fridays for the following week. This enables the technician/craftsman to plan his work for the forthcoming week. All completed work dockets should be returned to the engineer s office daily. 

Harvey (1952) noted R. S. Anderson has tested Aequorea at Friday Harbor and found that his hydromedusan will luminesce under strict anaerobic conditions. It was an extremely important observation retrospectively. The ability to luminesce in the absence of oxygen had been also observed with Medusa hemisphaerica by Macartney (1810) and with radiolarians, ctenophores, and Pelagia by Harvey (1926b). 

The small jellyfish Phialidium gregarium (diameter 15-20 mm) used to be abundant at Friday Harbor, Washington, in summer and autumn until about 1990. Levine and Ward (1982) isolated and purified a Ca2+-sensitive photoprotein from this jellyfish and named it phialidin. They extracted the photoprotein from whole specimens with an EDTA-containing buffer. The photoprotein extract was precipitated with ammonium sulfate, and purified by the following methods gel-filtration (BioGel P-150, minus 400 mesh), anion-exchange chromatography (DEAE Bio-Gel A), and gel-filtration (Sephadex G-75, superfine). 

Friday Harbor, 92-94, 137, 139 Fungal bioluminescence, 266-300 early studies, 268 role of SOD, 271... 

On Friday, Mr. Herit, a proud young man who looked like a French military academy cadet, dressed in a black shirt and black trousers with a black belt and silver buckle, called it a ighball as he served the caipiruska on ice with two fat straws. 

When I arrived last Friday night, the bar at Hearth was crowded with filthy wine drinkers—prosperous types who can take up two bar stools and not feel bothered to move. There were three women in dark day-to-evening suits who looked like editors at literary publishing houses haircuts as opposed to hairdos, light makeup and small, sensible earrings—the fashion equivalent of political correctness. 

At UVa.,Thursday only existed as a prelude to Friday—any bar would have pumped your chest with music and the drinking was calisthenic. You had twenty-four short hours before you had to do it seriously. There were a few too many A students at the bar at Blue Smoke. 

I dedicate this book to Paul D. Bartlett, one of the grand pioneers of physical organic chemistry, who investigated perceptively several basic problems in organic chemistry at a time when the chemical community did not yet see their crucial aspects, for example, in the mechanism of the diazo coupling reaction (Wistar and Bartlett, 1941). I learned much from him when he invited me to attend his Friday seminars at Harvard University in 1951-1952. 

Friday, September 11, 1942. Today Cunningham and Werner worked on the remaining plutonous nitrate solution of yesterday. They converted the plutonium to the hydroxide... 

LAAM usually has been prescribed in doses of 20—140 mg (Ling et al. 1978 Tennant et al. 1986). The typical Monday-Wednesday-Friday dosing schedule is 100 mg—100 mg—140 mg. The maximum recommended doses are 140 mg—140 mg—140 mg or 130 mg—130 mg—180 mg (thrice-weekly schedule) or 140 mg every other day. For some patients LAAM holds better than methadone. There is evidence that LAAM may be particularly helpful for patients who do not respond to high-dose methadone because of low plasma levels (Tennant 1988). Others patients prefer LAAM to methadone because they can attend the clinic less often (Tennant et al. 1986 Trueblood et al. 1978). However, a few experience nervousness and stimulation while taking this drug. 

Non-patent requests are usually despatched within 24 hours of receipt (Monday to Friday). 

Non-patent documents are despatched from Rapra within 24 hours of receipt (Monday - Friday) of request using first class mail within the UK, and airmail for the rest of the world. If you request e-mail or fax service, delivery will be within hours anywhere in the world. 

---