Biological treatment of high strength petrochemical wastewater /

Mode of access: Internet.

Theoretical and practical aspects of vacuum induction melting of high-strength steels.

"PB 161928."

Computer-based guidelines for concrete pavements.

"February 2005."

Computer-based guidelines for concrete pavements.

"February 2005."

High strength, high modulus fibers by pyrolysis of polymeric fibers

Mode of access: Internet.

High-strength bolts for bridges /

"Demonstration project no. 88."

Final report on development and fabrication of high strength simulated rocket motor cases by cryogenic stretch forming process. Technical documentary report nr. AFML-TR-64-410.

"MM Project nr. 8-101."

Development of low alloy steel compositions suitable for high strength steel castings

Mode of access: Internet.

Determination of the causes of weld-metal cracking in high-strength steels and the development of heat-treatable low-alloy-steel filler wires for use with the inert-gas-shielded arc-welding process

"Materials Central, Contract no. AF 33(616)-5878, Project no. 7351."

Research on properties of high strength materials suitable for high temperature applications

"Materials Central, Contract no. AF 33(616)-6552, Project no. 7381."

The evaluation of a high strength experimental grade of poco graphite/

Cover title.

Progress report on slip of structural steel double-lap joints assembled with high-strength bolts. 1st-

Mode of access: Internet.

High-strength resorbable brushite bone cement with controlled drug-releasing capabilities

Brushite cements differ from apatite-forming compositions by consuming a lot of water in their setting reaction whereas apatite-forming cements consume little or no water at all. Only such cement systems that consume water during setting can theoretically produce near-zero porosity ceramics. This study aimed to produce such a brushite ceramic and investigated whether near elimination of porosity would prevent a burst release profile of incorporated antibiotics that is common to prior calcium phosphate cement delivery matrices. Through adjustment of the powder technological properties of the powder reactants, that is particle size and particle size distribution, and by adjusting citric acid concentration of the liquid phase to 800 mM, a relative porosity of as low as 11% of the brushite cement matrix could be achieved (a 60% reduction compared to previous studies), resulting in a wet unprecompacted compressive strength of 52 MPa (representing a more than 100% increase to previously reported results) with a workable setting time of 4.5 min of the cement paste. Up to 2 wt.% of vancomycin and ciprofloxacin could be incorporated into the cement system without loss of wet compressive strength. It was found that drug release rates could be controlled by the adjustable relative porosity of the cement system and burst release could be minimized and an almost linear release achieved, but the solubility of the antibiotic (vancomycin > ciprofloxacin) appeared also to be a crucial factor.