For several recent TBM tunnel projects, unexpected ground conditions have been encountered, causing extra cost, considerable delay, and in some cases major claims. Undoubtedly, insufficient and/or irrelevant site investigation and testing are among the main causes of such incidents. The purpose of this paper is to review the main investigations and tests relevant for hard rock TBM projects, wit...

Analysis of dissolved metals in acid rock drainage (ARD) with an Agilent 4100 MP AES instrument that combines a nitrogen micro plasma with atomic emission detection (MP AES) was compared with an ICP-MS. Sample preparation consisted only of filtration, acidification (HNO3 1%) and addition of internal standard elements after appropriate dilution. In these complex matrices the systems gave identic...

In recent years, tests have begun being administered by computer. The potential benefits of computerized testing include more efficient test administration, flexible scheduling, quicker score reporting, more accurate examinee ability estimation, and expanded content/construct coverage. Although computerized testing is an enticing option, most testing programs find it necessary to offer both com...

Increased emphasis on routine screening of chemicals for potential neurotoxicity has resulted in the development of testing guidelines and standardized procedures. A multiphased, tiered-testing strategy has been proposed by numerous expert panels to evaluate large numbers of chemicals. In a regulatory context, however, a formal tiered-testing approach is not used, mostly because of the constrai...

A number of initiatives are underway in the United States in response to the 2009 critique of forensic science by a National Academy of Sciences committee. This article provides a broad review of activities including efforts of the White House National Science and Technology Council Subcommittee on Forensic Science and a partnership between the Department of Justice (DOJ) and the National Insti...

Keyword: Mg isotopes Igneous rock standards MC-ICP-MS To provide inter-lab comparison for high-precision Mg isotope analysis, Mg isotope compositions (expressed as δMg relative to DSM-3) for commercially accessible peridotite, basalt, andesite, and granite geostandards have been measured by multi-collector inductively coupled mass-spectrometry (Nu-Plasma) using sample-standard bracketing method...

The most significant institutional entity involved in the harmonisation of drug testing standards worldwide is the International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH), which comprises the three pharmaceutical industry associations and regulatory agencies of the EU, US and Japan. It is often claimed that such harmonisation w...

The National Institute of Standards and Technology (NIST) has developed new gamma-ray and neutron emitting sources for testing radiation detection systems. These radioactive sources were developed for testing of detection systems in maritime applications. This required special source characteristics.

The purpose of this study is to examine the standards and guidelines recommended by institutions organizations interested in psychological testing measurement worldwide introduce relevant literature those concerned. Within scope purpose, content updated test American Educational Research Association, Psychological Association National Council on Measurement, which are pioneers that develop for ...

Federal authority over clinical laboratories began in 1966 when Medicare independent-laboratory regulations established personnel standards for laboratories that participated in the Medicare and Medicaid programs. The following year, Congress enacted the Clinical Laboratory Improvement Act of 1967, known as ‘tCLIA ‘67,” which required licensure for laboratories testing patients’ specimens in in...