Evaluation of MDH model 1015 x-ray monitor /

Mode of access: Internet.

Operator and organizational maintenance manual for 90-mm recoilless rifle, M67 w/e (1015-00-657-7534).

"23 October 1985"--P. i.

Direct support maintenance manual for mortar, 4.2-inch, M30 (Cannon M30 on Mount M24A1), (1015-00-840-1840) and Trainer, Subcaliber, 60-mm, M31 (8429878).

Includes index.

Direct support maintenance repair parts and special tools list (including depot maintenance repair parts) for mortar, 4.2-inch, M30 (cannon M30 on mount M24A1) (1015-00-840-1840) and trainer, subcaliber, 60-mm, M31 (8429878).

Includes index.

Organizational maintenance repair parts and special tools list for rifle, recoilless, 106-mm, M40A2 (1015-00-133-8484) and M40A4 (1015-00-133-8485).

"May 1986."

Direct support maintenance manual for 90-mm recoilless rifle, M67 w/e (1015-00-657-7534).

"October 1985."

Operator's manual for mortar, 81-mm, M29A1, (1015-00-999-7794).

Includes index.

Operator's manual for 4.2-inch mortar, M30 (1015-00-840-1840).

"March 1985."

Operator's manual for howitzer, light, towed, 105-mm, M102 (1015-00-086-8164).

"August 1985."

Organizational and direct support maintenance repair parts and special tools list for 90-mm recoilless rifle, M67 W/E (1015-00-657-7534).

Includes index.

Raman spectroscopic study of vivianites of different origins

Raman spectroscopy has been used to study a selection of vivianites from different origins. A band is identified at around 3480 cm-1 whose intensity is sample dependent. The band is attributed to the stretching vibration of Fe3+ OH units which are formed through the autooxidation of the vivianite minerals either by self-oxidation or by photocatalytic oxidation according to the reaction: (Fe2+)3(PO4)2·8H2O + 1/2O2 (Fe2+)3– x(Fe3+)x(PO4)2(OH)x·(8–x)H2O in which some of the water of crystallization is converted to hydroxyl anions. Complexity of the OH stretching region through the overlap of broad bands is reflected in the water HOH deformation modes at 1660 cm–1. Using the infrared bands at 3281, 3105 and 3025 cm–1, hydrogen bond distances of 2.734(5), 2.675(2) and 2.655(2) Å are calculated. Vivianites are characterised by an intense band at 950 cm–1 assigned to the PO4 symmetric stretching vibration. Low Raman intensity bands are observed at ~1077, ~1050, 1015 and ~ 985 cm–1 assigned to the phosphate PO4 antisymmetric stretching vibrations. Multiple antisymmetric stretching vibrations are due to the reduced tetrahedral symmetry. This loss of degeneracy is also reflected in the bending modes. Two bands are observed at ~ 423 and ~ 456 cm–1 assigned to the2bending modes. For the vivianites four bands are observed at ~ 584, ~ 571, ~ 545 and ~ 525 cm–1 assigned to the 4modes of vivianite.

Particle number and mass emission factors from combustion of wood samples collected from Queensland forest

Knowledge of particle emission characteristics associated with forest fires and in general, biomass burning, is becoming increasingly important due to the impact of these emissions on human health. Of particular importance is developing a better understanding of the size distribution of particles generated from forest combustion under different environmental conditions, as well as provision of emission factors for different particle size ranges. This study was aimed at quantifying particle emission factors from four types of wood found in South East Queensland forests: Spotted Gum (Corymbia citriodora), Red Gum (Eucalypt tereticornis), Blood Gum (Eucalypt intermedia), and Iron bark (Eucalypt decorticans); under controlled laboratory conditions. The experimental set up included a modified commercial stove connected to a dilution system designed for the conditions of the study. Measurements of particle number size distribution and concentration resulting from the burning of woods with a relatively homogenous moisture content (in the range of 15 to 26 %) and for different rates of burning were performed using a TSI Scanning Mobility Particle Sizer (SMPS) in the size range from 10 to 600 nm and a TSI Dust Trak for PM2.5. The results of the study in terms of the relationship between particle number size distribution and different condition of burning for different species show that particle number emission factors and PM2.5 mass emission factors depend on the type of wood and the burning rate; fast burning or slow burning. The average particle number emission factors for fast burning conditions are in the range of 3.3 x 1015 to 5.7 x 1015 particles/kg, and for PM2.5 are in the range of 139 to 217 mg/kg.