Test method standards
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The aim was to determine the alignment with evaluation standards and the acceptability of a cost effective alternative. This study utilized a mixed-method approach, specifically concurrent triangulation. Quantitative and qualitative data were gathered concurrently, and then compared and combined the results to get a comprehensive understanding of the topic.
15p vialicene 02-07-2024 0 0 Download
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The study investigates the attitudes and beliefs of pre-service teachers on home and school gardening as the basis for incorporating gardening activity in teacher education courses. Utilizing a descriptive research design, the data was gathered through a researcher-made survey and analyzed using various statistical methods such as percentage, mean, standard deviation, t-test for independent sample means, and Pearson r.
19p vialicene 02-07-2024 1 0 Download
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Part 1 of ebook "Clinical data analysis on a pocket calculator: Understanding the scientific methods of statistical reasoning and hypothesis testing (Second edition)" provides readers with contents including: Chapter 1 - Data spread, standard deviations; Chapter 2 - Data summaries, histograms, wide and narrow gaussian curves; Chapter 3 - Null-hypothesis testing with graphs; Chapter 4 - Null-hypothesis testing with the T-table; Chapter 5 - One-sample continuous data (One-sample T-test, One-sample Wilcoxon test); Chapter 6 - Paired continuous data (Paired T-test, Wilcoxon signed rank test); C...
160p daonhiennhien 03-07-2024 2 1 Download
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Vietnam is located in a strong earthquake zone with many areas having a ground acceleration (ag) of greater than 0.08 g (TCVN 9386:2012). The article introduces a method to determine the attenuation coefficients according to the standard TCVN 10304:2014.
9p viwalton 02-07-2024 1 1 Download
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This research is aimed to test and apply the concept of excellence awards of quality, according to the awards models of criteria to assess the extent of the application of quality management systems. A group of awards adopted by international, regional and local organizations means, outstanding administrative systems to evaluate performance and follow-up measuring their self-performance to reach excellence. The quality awards standards are of the most important methods of measuring performance, it has been access to a set of standards to achieve them.
14p longtimenosee09 08-04-2024 5 1 Download
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Ebook "Photoelectrochemical water splitting: Standards, experimental methods, and protocols" outlines many of the techniques involved in materials development and characterization for photoelectrochemical (PEC) – for example, proper metrics for describing material performance, how to assemble testing cells and prepare materials for assessment of their properties, and how to perform the experimental measurements needed to achieve reliable results towards better scientific understanding.
130p coduathanh1122 27-03-2024 2 1 Download
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This study aimed to translate the 31-item Quality of Life in Epilepsy Inventory (QOLIE-31) into Vietnamese and validate the translation. Methods: The inventory was translated through “forward – backward” translation, and culturally adapted for standardization. To ensure the reliability of the inventory, the internal consistency and the temporal consistency was determined. Clinical variables were tested for discriminant validity by comparing their scores.
6p vikissinger 21-12-2023 4 1 Download
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These test methods of chill testing apply to gray irons that are to be free of chill in the casting and to chilled irons that are to have a specific depth of chill in the casting. Two test methods of determining the chilling tendencies of cast iron are covered as follows. For many applications either test method will be satisfactory if test pieces of the proper dimensions are selected.
4p hth_hn_vn 10-12-2023 8 4 Download
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"Standard Test Methods and Definitions for Mechanical Testing of Steel Products" cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results.
49p hth_hn_vn 10-12-2023 7 4 Download
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"Standard Practice for Ultrasonic Examination of Turbine and Generator Steel Rotor Forgings" covers turbine and generator steel rotor forgings covered by Specifications A469/A469M, A470/A470M, A768/A768M, and A940/ A940M. This standard shall be used for contact testing only.
8p hth_hn_vn 10-12-2023 7 4 Download
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This test method covers procedures for determining the weight [mass] of coating on aluminum-coated iron or steel sheets and wire, and on other aluminum-coated iron and steel articles.
6p hth_hn_vn 10-12-2023 6 4 Download
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This is an acceptance specification for the ultrasonic inspection of forged steel crankshafts having main bearing journals or crankpins 4 in. [100 mm] or larger in diameter. This specification covers the testing equipment required and the test procedure to be followed, and it defines the critical and noncritical areas and limits of acceptance.
3p hth_hn_vn 10-12-2023 9 3 Download
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"Standard Test Methods for Impact Testing of Cast Irons" cover the details of apparatus, test specimens and procedures for cast iron, including gray iron, white iron, malleable iron, ductile iron, and austempered ductile iron, but not including chilled rolls or rolls with white iron skins.
4p hth_hn_vn 10-12-2023 8 4 Download
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"Standard Test Method for Direct Current Magnetic Properties of Soft Magnetic Materials Using D-C Permeameters and the Point by Point (Ballistic) Test Methods" provides dc permeameter tests for the basic magnetic properties of soft magnetic materials in the form of bars, rods, wire, or strip specimens which may be cut, machined, or ground from cast, compacted, sintered, forged, extruded, rolled, or other fabricated materials.
11p hth_hn_vn 10-12-2023 9 4 Download
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"Standard Test Methods for Permeability of Weakly Magnetic Materials" cover four procedures for determination of the permeability [relative permeability]2 of materials having a permeability not exceeding 6.0. Materials typically tested by these methods such as austenitic stainless steels may be weakly ferromagnetic. That is, the magnetic permeability is dependent on the magnetic field strength.
8p hth_hn_vn 10-12-2023 6 4 Download
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"Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame" covers tests for the magnetic properties of basic flat-rolled magnetic materials at power frequencies (25 to 400 Hz) using a 25-cm Epstein test frame and the 25-cm double-lap-jointed core. It covers the determination of core loss, rms exciting power, rms and peak exciting current, and several types of ac permeability and related properties of flat-rolled magnetic materials under ac magnetization.
17p hth_hn_vn 10-12-2023 10 4 Download
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"Standard Test Method for Alternating Current Magnetic Properties of Materials Using the Wattmeter-Ammeter-Voltmeter Method, 100 to 10 000 Hz and 25-cm Epstein Frame" covers the determination of the magnetic properties of flat-rolled magnetic materials using Epstein test specimens with double-lap joints in the 25-cm Epstein frame. It covers determination of core loss, rms and peak exciting current, exciting power, magnetic field strength, and permeability.
11p hth_hn_vn 10-12-2023 6 4 Download
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This specification covers cast iron soil pipe and fittings for use in gravity flow plumbing, drain, waste and vent sanitary, and storm water applications. It establishes standards covering material, manufacture, mechanical and chemical properties, coating, test methods, inspection, certification, product markings, dimensions, and dimensional tolerances for extra heavy and service cast iron soil pipe and fittings.
45p hth_hn_vn 10-12-2023 5 5 Download
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This test method covers procedures for determining the weight [mass] of coating on iron or steel sheet, wire, and other articles in which the coating is zinc or a zinc alloy, such as zinc-5 % aluminum (including zinc-5 % aluminummischmetal and zinc-5 % aluminum-0.1 % magnesium), zincaluminum-magnesium (including zinc-5 to 9 % aluminummagnesium and zinc-9 to 13 % aluminum-magnesium) or 55 % aluminum-zinc. In the body of this test method, reference to zinc coating shall be interpreted to also include zinc alloy coating except where specifically stated otherwise.
5p hth_hn_vn 10-12-2023 11 4 Download
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"Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings" covers the classification of graphite in cast irons in terms of type, distribution, and size by visual comparison to reference photomicrographs. This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and may be applied to gray irons, malleable irons, compacted graphite irons, and the ductile (nodular) irons.
13p hth_hn_vn 10-12-2023 11 4 Download