Support pads

C024 Length of support pads for down hold bolts HIS HK1 N 13 mm... 

The quantity of quartz on a sample filter is determined by multiplying the quantity of quartz on a standardized filter by the absorbance of the 800 cm peak of a sample filter divided by the absorbance of the 800 cm peak of the standardized filter. This technique has been used to analyze 53 PAT filters and the results are shown in Table III. Redeposition was not done due the similar deposition technique used to prepare the Standard Reference Filters in the PAT Program (8). The first fourteen samples in Table III were filters that had been retained by the lab from previous PAT Rounds. The actual results on the rest were submitted in the PAT Program to NIOSH. (PAT Filter Number S-35-2 has not been included because half of the filter was initially analyzed backwards in the MIR sample holder resulting in a quartz loss on the support pad.) The % recovery was calculated based upon the PAT Geometric Mean. 

The field monitor used to collect inhalation samples was a three-piece Gelman No. 4336 cassette with cellulose support pad and NG4, 37 mm (0.8 pore size) Gelman membrane filter. DHEW (NIOSH)... 

Prior to sampling, treated filters are placed fiber side up into the cassette bottom half and the windscreen assembly is pressed into place. No gasket or support pad is needed under the treated filter. Loaded samplers are stored in sealed specimen jars until use. 

Figure 2 Western blot transfer sandwich assembly for wet transfer (top) and the preparation for transfer using the Mini-Trans-blot apparatus (bottom). The transfer membrane is sandwiched between the gel, filter papers, and support pad, with the transfer membrane facing the anode. The cassette containing the assembled gel-membrane sandwich is inserted into the Trans-blot apparatus containing cold transfer buffer, and the electro-transfer carried out. (Adapted from Bio-Rad Instruction manual.)...

It was assumed that the heat input to the liquid nitrogen could be ascribed to three sources radiation through the top surface, gaseous, and wall conduction, and a constant conduction heat input through the support pads at the bottom of the dewar. The constant heat input would be independent of the temperature of the top surface. The conduction would vary linearly as the temperature difference between liquid and top surface at a given liquid level. The radiation would vary as the difference of the fourth powers of the temperatures of the liquid and top surface, The heat input to the liquid nitrogen could then be represented by the expression... 

Supporting pad plates (weep holes for pad plates) and position/details of lifting lugs... 

The channel must be polished. In the centre of the manifold is a sprue bushing (1), on the opposite side is a support pad (3) taking the pressure from the injection machine cylinder and a pin (4) aligning the manifold. A second pin (5) located in the end of the manifold sets its angular position. The manifold is pressed against the HR nozzles located in the mould by pressure pads (6) on the opposite side of the manifold. The transfer from the... 

Manifold resting only on support pad. Melt leak occurs. 

Support pad fails to take pressure from injection machine cylinder. 

To achieve conformity between nozzle height and support pad height (step 2), the height of the intermediate plate sometimes has to be adjusted, if there is one in the mould (see Figure 4.60). If this is not done, a special support pad needs to be used. 

---