| Polyfibroblast: A Self-Healing and Galvanic Protection Additive |
29-Jan-2009 |
9 pages |
| Authors:
Jason J Benkoski; JOHNS HOPKINS UNIV LAUREL MD
|
 | The goal of this project is to develop a primer additive that mimics the self-healing ability of skin by forming a polymer scar across scratches. Designed to work with existing military grade primers, Polyfibroblast consists of microscopic, hollow zinc tubes filled with a moisture-cured polyurethane-urea (MCPU). When scratched, the foaming action of a propellant ejects the resin from the broken tubes and completely fills the crack. No catalysts or curing ... |
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| Cross-Generational Knowledge Flows in Edge Organizations: Research in Progress |
01-Jun-2007 |
39 pages |
| Authors:
Jay Liebowitz; Nirmala Ayyavoo; Hang Nguyen; James Simien; JOHNS HOPKINS UNIV LAUREL MD
|
| As the graying workforce increases and the work patterns of our younger workers are more mobile, knowledge retention, attrition, and transfer become key determinants of the longevity of an organization. This is particularly true in edge organizations, which thrive on adaptability and agility to survive. In order for workforce development and succession planning to be effective in edge organizations, cross-generational knowledge flows are paramount towards achieving an innovative and agile ... |
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| Corneal Damage from Mid-Infrared Laser Radiation |
APR 2004 |
13 pages |
| Authors:
Russell L. McCally; JOHNS HOPKINS UNIV LAUREL MD
|
| Corneal epithelial damage thresholds for exposures to sequences of pulses of 1.55 jim infrared radiation produced by an Er fiber laser were investigated. Thresholds were determined for sequences of 8 to 128 pulses at a repetition frequency of 10 Hz and 8 to 256 pulses at 20 Hz. The duration of the individual pulses was 0.025 sec and the 1/e diameter of the laser beam was 0.1 cm. Threshold damage ... |
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| Supercritical Fluid Spray Application Process for Adhesives and Primers |
01-Mar-2003 |
207 pages |
| Authors:
Marc D Donohue; JOHNS HOPKINS UNIV LAUREL MD
|
| In this project, we reformulated various solvent borne, high volatile organic compound (VOC) adhesives and adhesive primers, as cited in SERDP's Statement of Need, for application by a supercritical carbon dioxide spray process. Over the last several years, a new spray application process has been developed for polymeric based paints and other coatings that can reduce solvent VOC emissions up to 80%. This process was conceived by the principal investigator ... |
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| Far Forward Life Support System (FFLSS) Phase II |
MAY 2001 |
87 pages |
| Authors:
Dexter G. Smith; JOHNS HOPKINS UNIV LAUREL MD
|
| The Far Forward Life Support System (FFLSS) is intended for U.S. Army use in far forward, battlefield situations. The primary patient population is young, otherwise healthy, adult soldiers. The FFLSS must provide stabilizing medical care in the far forward environment. The device must be easily operated, highly mobile, compact and rugged, and provide automated, definitive support for a minimum of one hour. This project produced a prototype FFLSS and performance ... |
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| Corneal Damage from Infrared Radiation |
MAR 2000 |
46 pages |
| Authors:
Russell L. McCally; C. B. Bargeron; JOHNS HOPKINS UNIV LAUREL MD
|
| This report summarizes research on corneal damage from exposures to multiple pulses of CO(2) laser radiation at 10.6 (micrometer) and Tm: YAG laser radiation at 2.02 (micrometer). Retinal damage from sources with rectangular irradiance distributions was also modeled. Thresholds for CO(2) exposures were determined for sequences of up to 1024 pulses (80 ns duration) at frequencies of 10 and 16 Hz. Thresholds for Tm: YAG exposures were determined sequences of ... |
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| Corneal Damage from Infrared Radiation |
NOV 1998 |
17 pages |
| Authors:
Russell L. McCally; JOHNS HOPKINS UNIV LAUREL MD
|
| This report summarizes research during the past year on: the damage mechanism for short (80 ns) pulses of CO2 laser radiation interacting with the cornea epithelium; epithelial damage from multiple-pulse exposures to more penetrating mid-infrared radiation from a Tm:YAG laser at 2.02 micro; and predictions of retinal damage thresholds for exposures to sources with rectangular irradiance distributions. Damage threshold measurements on corneas maintained at 21 C using single 80 ns ... |
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| Far Forward Life Support System |
AUG 1998 |
70 pages |
| Authors:
Dexter Smith; Protogoras Cutchis; William Wiesmann; Alex Pranger; Teresa Denney; JOHNS HOPKINS UNIV LAUREL MD
|
| The objective of this cooperative agreement was to develop the concept and a specification for a Far Forward Life Support System (FFLSS) that enables medic/corpsman first responders to provide on-scene critical life-saving support during the crucial minutes after a combat casualty and during evacuation. The FFLSS is a patient ventilator integrated with state-of-the-art commercial-off-the-shelf (COTS) physiologic sensors and a digitally-controlled feedback system for automated ... |
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| Corneal Damage from Infrared Radiation |
DEC 97 |
24 pages |
| Authors:
Russel L. McCally; JOHNS HOPKINS UNIV LAUREL MD
|
| This report summarizes our research during the past year on the interaction of 80 ns pulses of infrared radiation produced by a CO2-TEA laser with the cornea. Epithelial damage thresholds were determined for sequences of 1, 2, 8, 32, 128, and 1024 pulses at 10 Hz and for sequences of 1, 2, 8, 32, 128, and 1024 pulses at 16 Hz. Threshold damage is correlated by a power law of ... |
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Reports by Corporate Author
