Security level filters

During the set-up process of the GC/MS instrument that is shown in Picture 5, the negotiation module is used to install the on-site target library and to select the security level filter of AMDIS (this approach may be modified for the new GC/MS system). The security level filters of AMDIS progressively restrict the accessibility to and the content of the data that AMDIS provides after postprocessing of the spectral data. In order to protect... 

Figure 1 shows schematically the relationship between on-site target library, blinding, and AMDIS security level filter. 

On the right side the window labelled AMDIS on-site version displays 5 security level filters of AMDIS gradually limiting the information displayed to the operator as described in Table 7. 

Table 7. The effects of the different AMDIS security level filters...

At the time of writing, a new blinded mode software was being developed. This new version is based on different GC/MS operating software and will include additional security features such as unique installation numbers and check sum. Also, the need of AMDIS security level filters is being reviewed. 

The system is dispatched with a commercial spectral database and a copy of the OCAD, which are both available if analysis is conducted in open mode. If the instrument is operated in blinded mode and AMDIS security level filters are applied, the limitations as outlined in Section 5 above apply. 

Extensive technical measures have been implemented to allow the ISP to protect confidential, commercial, or sensible military information during on-site analysis. These measures include in particular the option of blinding the GC/MS operating software and security level filters of AMDIS (Automated Mass Spectral Deconvolution and Identification System), the GC/MS raw data processing software. These measures can be applied separately or combined, offering the ISP the choice of a gradual restriction of the information revealed to the IT (for details see Chapter 2). 

The restrictions that can be applied by selecting the security level filters of AMDIS in the negotiation module (see Chapter 2), which influence the output of data from the on-site version of AMDIS as explained above, do not apply for the open version. 

The pressure drop within the extractors may not exceed a certain defined level to secure the filter cartridges or plates. 

Fit securely to the lower end of the condenser (as a receiver) a Buchner flask, the side-tube carrying a piece of rubber tubing which falls well below the level of the bench. Steam-distil the ethereal mixture for about 30 minutes discard the distillate, which contains the ether, possibly a trace of unchanged ethyl benzoate, and also any biphenyl, CeHs CgHs, which has been formed. The residue in the flask contains the triphenyl carbinol, which solidifies when the liquid is cooled. Filter this residual product at the pump, wash the triphenyl-carbinol thoroughly with water, drain, and then dry by pressing between several layers of thick drying-paper. Yield of crude dry product, 8 g. The triphenyl-carbinol can be recrystallised from methylated spirit (yield, 6 g.), or, if quite dry, from benzene, and so obtained as colourless crystals, m.p. 162. ... 

Fig. 7.2. A versatile bubbler manometer. The bubbler manometer Is securely mounted by the reservoir and attached to the vacuum system. It is then easily filled by the following process. The level of the bottom end of the vertical tube dipping into the reservoir is marked on the outside of the reservoir. Next, a calculated amount of mercury is filtered into the reservoir. With the valve between the two arms open, a vacuum is slowly drawn on the manometer. The mercury level must not drop below the mark on the reservoir, or else bubbles will enter the vertical tube and shoot mercury through the vacuum system. If the mercury level in the reservoir comes close to the mark, the manometer is brought up to atmospheric pressure and more mercury is added. When the proper amount of mercury is present in the fully evacuated manometer, the mercury level should be about 10 mm above the mark on the reservoir, and the upper meniscus should be in a region of the manometer suitable for measurement, as illustrated. Once the manometer is properly filled and evacuated, the valve is closed to isolate the reference arm at high vacuum.

Level of protection 2 (LP-2) is a high-level passive protection that does not utilize sensors. Options for achieving LP-2 include site selection, addition and upgrade of filters and adsorption units specific to biological and chemical threats, compartmentalization and overpressurization of building interiors, filtration of outdoor air, relocation of outdoor air intake vents, local air-washes,2 security protection in the surrounding area, and appropriate operational responses. 

Drinking water security, a private good which is substitutable (to varying degrees) by water treatment techniques, at the level of the municipal supplier or via domestic filters, and bottled mineral water. 

Diatomaceous Earth. Diatomaceous earth is a natural form of amorphous silica to which workers ean be exposed during mining, calcining, and bagging. Diatomaceous earth is almost exclusively mined by open-pit methods, and exposure levels of 0.1-2.0 mg/m dust of which 5% is quartz have been reported (20). When diatomaeeous earth is calcined, cristobalite is formed and can account for up to 40% of the hnal product. Diatomaceous earth is a major substrate for filtering or elarifying solvents, pharmaceuticals, beer, whiskey, wine, and municipal and industrial water. It is also used as a filler for paints, paper, synthetic rubber, and securing powders. 

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