Verification Convention

The high C/H ratio for heavy fuels and their high levels of contaminants such as sulfur, water, and sediment, tend to reduce their NHV which can reach as low as 40,000 kJ/kg by comparison to the 42,500 kJ/kg for a conventional home-heating oil. This characteristic is not found in the specifications, but it is a main factor in price negotiations for fuels in terms of cost per ton. Therefore it is subject to frequent verification. 

For conventional probes, acoustic verification aims at characterizing the beam pattern, beam crossing, beam angle, sensitivity, etc., which are key characteristics in the acoustic interaction between acoustic beam and defect. For array transducers, obviously, it is also a meaning to check the acoustic capabilities of the probe. That is to valid a domain (angle beam, focus, etc.) in which the probe can operate satisfactorily. 

Verification of the molecular weight of thiirene dioxides by mass spectrometry, employing the conventional electron-impact (El) ionization method, has been unsuccessful due to the absence or insignificant intensity of molecular ion peaks in their mass spectra. The base peak is rather characteristic, however, and corresponds to the formation of the disubstituted acetylene ion by loss of sulfur dioxide91 (equation 3). 

Agarwal et al. 1978), the quantification of these specific enzymes may indicate that exposure to endosulfan has occurred. Blood tests, such as decay curves for aminopyrine in plasma, which are semiquantitative indices of liver enzyme induction, have been used successfully in the past to demonstrate enzyme induction in pesticide-exposed workers. Because numerous chemicals found at hazardous waste sites also induce these hepatic enzymes, these measurements are not specific for endosulfan exposure. However, measurements of enzyme activity, together with the detection of the parent compound or its metabolites in tissue or excreta, can be useful indicators of exposure. All of these potential biomarkers require further verification in epidemiological studies. Further studies with focus on the development of methods to separate and measure the estrogenicity of endosulfan in in vitro assays would be valuable since these assays are more sensitive and discriminative than other conventional biomarkers. Preliminary results have been presented by Sonnenschein et al. (1995). 

The Chemical Weapons Convention (CWC) opened for signature in Paris, on January 13, 1993 and entered into force on April 29, 1997. Its complexity is reflected in almost 200 pages of text, containing Preamble and 24 Articles and three Annexes On Chemicals (6 p), On Implementation Verification (105 p), and On Protection of Confidential Information (5 p) [2], To the main pillars of the CWC belong ... 

Knowledge of the most common licit uses of substances in Tables I and II of the 1988 Convention, including the processes and end products in which the substances may be used, is essential to the verification of the legitimacy of orders or shipments. The most common licit uses of those substances reported to the International Narcotics Control Board are as follows ... 

At present there is a sufficiently complete picture of photoelectrochemical behavior of the most important semiconductor materials. This is not, however, the only merit of photoelectrochemistry of semiconductors. First, photoelectrochemistry of semiconductors has stimulated the study of photoprocesses on materials, which are not conventional for electrochemistry, namely on insulators (Mehl and Hale, 1967 Gerischer and Willig, 1976). The basic concepts and mathematical formalism of electrochemistry and photoelectrochemistry of semiconductors have successfully been used in this study. Second, photoelectrochemistry of semiconductors has provided possibilities, unique in certain cases, of studying thermodynamic and kinetic characteristics of photoexcited particles in the solution and electrode, and also processes of electron transfer with these particles involved. (Note that the processes of quenching of photoexcited reactants often prevent from the performing of such investigations on metal electrodes.) The study of photo-electrochemical processes under the excitation of the electron-hole ensemble of a semiconductor permits the direct experimental verification of the applicability of the Fermi quasilevel concept to the description of electron transitions at an interface. 

Nevertheless, it was events in Kurdistan in particular which fully illustrated both the ambiguity of what was banned and the absence of verification measures under the Geneva Protocol. Only use of chemical weapons was banned, not possession. In 1972 the United Nations General Assembly had adopted the Convention of the Prohibition of the Development, Production and Stockpiling of Biological Weapons. Chemical weapons fell outside this convention and by 1988 it became clear that a chemical weapons treaty was urgently needed to place effective constraints on the proliferation of these weapons worldwide. 

The entry into force of the 1993 CWC on 29 April 1997 was unique in the history of arms control. This agreement both banned an entire class of weapons and simultaneously addressed chemical proliferation concerns. It was not, however, the attention to non-proliferation that made the Convention unique, rather that the CWC incorporated an elaborate international system for verification of compliance.1... 

Finnish Institute for Verification of the Chemical Weapons Convention (VERIFIN), University of Helsinki, Finland... 

The Convention on the prohibition of the development, production, stockpiling, and use of chemical weapons and of their destruction (the Chemical Weapons Convention, CWC) was signed on January 13, 1993, and entered into force on April 29, 1997. The CWC includes 24 Articles, the Annex on Chemicals, the Annex on Implementation and Verification (so-called Verification Annex), and the Confidentiality Annex. The Verification Annex, which by the length occupies the majority of the CWC, is written in 11 parts. Article I lists the general obligations of the CWC as shown in Figure 1. 

Chemical Weapons Convention Chemicals Analysis discusses sample collection, sample preparation and analysis, and concentrates on verification that takes place on site, analyses off site, and methods and procedures used. In the first part of the book is discussed the mobile laboratory of the OPCW and instrumentation and software used therein, as well as other on-site analysis equipment, procedures, and strategies. The OPCW gas chromatograph-mass spectrometer for on-site analysis is described and... 

M. Mesilaakso, and M. Rautio, Verification of chemicals related to the chemical weapons convention, Table 1, in Encyclopedia of Analytical Chemistry Instrumentation and Applications, R.A. Meyers, (Ed.), Vol. 1, John Wiley Sons, Ltd, Chichester, 2000, pp. 899-909. 

The Chemical Weapons Convention (CWC) provides sampling and analysis as a tool for verification. General procedures to use sampling and analysis are outlined under the general rules of verification in the Verification Annex (VA) Part II paragraph 52-58, special provisions concerning different types of inspections are given in various parts of the VA. 

Sampling and analysis (S A) during inspections is one of the verification tools provided for by the Chemical Weapons Convention (CWC) (1). Chemical analysis of a sample is the only direct and scientific (and not only circumstantial) tool to confirm the presence of a chemical substance. The presence of a declared chemical in a declared place at a declared time and in declared quantities confirms the declaration provided by a State Party to the OPCW (Organization for the Prohibition of Chemical Weapons). The actual or past presence of a chemical, which should not be at the inspected site according to the declarations, or, which has... 

Between 1989 and 1993, the Finnish Institute for Verification of the Chemical Weapons Convention (VERIFTN) initiated four international interlaboratory comparison (round-robin) tests for the verification of chemical disarmament (2) to test the effectiveness of their procedures for the recovery of treaty-related chemicals (Chemical Warfare agents... 

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