| Integration of an Emerging Highly Sensitive Optical CO2 Sensor for Ocean Monitoring on an Existing Data Acquisition System SeaKeeper 1000 (trademark) |
30 Sep 2012 |
7 pages |
| Authors:
Govind Rao; MARYLAND UNIV BALTIMORE COUNTY BALTIMORE MD DEPT OF CHEMICAL AND BIOCHEMICAL ENGINEERING
|
 | The novelly designed optical sensor for autonomous ocean monitoring works on equilibrium principles. When the pH-sensitive reagent solution sitting behind a gas-permeable membrane is exposed to seawater, the CO2 molecules present in the seawater diffuse across the membrane into the reagent and induce a pH change. After equilibrium is reached, the fluorescence is measured and the pCO2 data are recovered from a calibration curve. A specific feature of our measurement ... |
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| Microfluidic Flow Retardation Device for Tagless Cancer Cell Analysis for Metastatic Potential |
Jul 2012 |
15 pages |
| Authors:
Rajan Kumar; GENOME DATA SYSTEMS INC TRENTON NJ
|
| We developed a microfluidic device to detect surface protein expression in individual cancer cells in small cell populations without prior labeling. We used LM2 cells (kind gift of Juan Massague, Memorial Sloan-Kettering Cancer Center, NY), derived from murine lung metastases of MDA-MB-231 cells with a unique lung metastatic potential. We selected LM2 cells for 100% sustained expression of IL-13R 2 and cells without expression. We coated the channel with an ... |
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| Microfluidic Flow Retardation for Tagless Cancer Cell Analysis |
Jul 2012 |
15 pages |
| Authors:
Robert Wieder; UNIVERSITY OF MEDICINE AND DENTISTRY OF NEW JERSEY NEWARK
|
| Solid tumors are highly heterogeneous with respect to cell type. A small fraction of cells with the capacity to metastasize will dictate the ultimate prognosis of a tumor. Metastatic potential is dictated to a great extent by the expression pattern of cell surface proteins. Population averaged gene expression profiling by microarrays does not capture the signature of this minority subpopulation and therefore lacks the prognostic specificity to impact clinical practice. ... |
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| The Results of a Laboratory Feasibility Study for the Biological Treatment of Umatilla Groundwater |
Jan 2012 |
70 pages |
| Authors:
Victor F Medina; Heather Knotek-Smith; David Gent; Agnes Morrow; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| The Umatilla Chemical Depot (UMCD) has been slated to close as an Army facility under the Base Realignment and Closure (BRAC) Program. One remaining environmental issue is a groundwater plume contaminated with explosives; the two most critical are 2,4,6-trinitrotoluene (TNT) and 1,3,5-trinitrohexahydro-1,3,5-triazine (RDX). Since 1994, a groundwater pump and treat system has operated at the site as a corrective measure for the contaminated groundwater. The effectiveness of this treatment system ... |
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| Trans-Dermal Fentanyl Patches are a Cost-Effective Method of Long-Term Analgesic Delivery Following Corneal Exposure to Sulfur Mustard Vapor |
Jan 2012 |
17 pages |
| Authors:
Angela Adkins; Marian Nelson; Megan Lyman; Adam Swartz; Kaylie Tuznik; Patrick McNutt; ARMY MEDICAL RESEARCH INST OF CHEMICAL DEFENSE ABERDEEN PROVING GROUND MD
|
| Analgesic pain management for acute pain resulting from ocular sulfur mustard (SM) exposure in rabbits involves delivery of the opioid receptor agonist buprenorphine using subcutaneously implanted osmotic pumps. The combination of an invasive surgery, risk of postsurgical infection and central effects makes this system suboptimal. Alternatively, fentanyl, a synthetic opioid with predominantly mu receptor agonist activity, is significantly more potent than buprenorphine, with fewer associated CNS side effects. Fentanyl is ... |
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| Realizing A Mid-Infrared Optically Pumped Molecular Gas Laser Inside Hollow-Core Photonic Crystal Fiber |
Jan 2012 |
190 pages |
| Authors:
Andrew M Jones; KANSAS STATE UNIV MANHATTAN
|
| This research has focused on the development, demonstration, and characterization of a new type of laser based on optically-pumped gases contained within hollow optical fibers. These novel lasers are appealing for a variety of applications including frequency metrology in the midinfrared,free-space communications and imaging, and defense applications. Furthermore,because of the hollow core fibers used, this technology may provide the means to surpass the theoretical limits of output power available from ... |
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| Implementing Digital Feedback Controls for the Multiple Simultaneous Ring Cavities in the FASOR-X System |
Sep 2011 |
9 pages |
| Authors:
Jeffrey T Baker; David Gallant; Arthur Lucero; Harold Miller; Jonathon Stohs; AIR FORCE RESEARCH LAB KIRTLAND AFB NM SPACE VEHICLES DIRECTORATE
|
| Precision tuned high power (50W) 589nm generation for use in laser sodium guidestar generation is a key capability in today's modern adaptive optical systems. The approached used is Sum-Frequency Generation (SFG) of 1319nm and 1064nm lines of Nd:YAG in an LBO crystal. High power narrow line sources are not commercially available, so low power narrow-band NPRO sources are mated with resonantly tuned high power ring lasers to achieve high power ... |
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| Microfluidic Flow Retardation Device for Tagless Cancer Cell Analysis for Metastatic Potential |
Jul 2011 |
10 pages |
| Authors:
Rajan Kumar; GENOME DATA SYSTEMS INC TRENTON NJ
|
| We developed a microfluidic device to detect surface protein expression in individual cancer cells in small cell populations without prior labeling. We used LM2 cells (kind gift of Juan Massague, Memorial Sloan-Kettering Cancer Center, NY), derived from murine lung metastases of MDA-MB-231 cells that have a unique potential to re-metastasize to lung. We selected LM2 cells for 100% sustained expression of IL-13RA2 and cells without expression. We coated the channel ... |
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| Experimental Study of an Air-Augmented Waterjet Propulsor |
JUN 2011 |
6 pages |
| Authors:
Scott Gowing; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| Compressed air can be added to the flow in a waterjet pump to increase the thrust. The gas bubbles expand as the pump mixture passes through the pressure gradient of the convergent discharge nozzle, imparting energy into the flow. In this experiment, air is injected into a pump fitted to a model boat and static thrust is measured for a range of void fractions using two nozzles. Air is injected ... |
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| Stormwater Asset Inventory and Condition Assessments to Support Asset Management |
May 2011 |
30 pages |
| Authors:
Ben Recker; Gary Nault; TETRA TECH INC PASADENA CA
|
| Overview: Utilities Asset Management Overview, Air Combat Command s Utility System Inventory and Condition Assessment Project Overview, Stormwater Utility System Review and Results, Lessons Learned, Recommendations and Way Ahead. |
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| VCSEL End-Pumped Passively Q-Switched Nd:YAG Laser with Adjustable Pulse Energy |
28 Feb 2011 |
8 pages |
| Authors:
Lew Goldberg; Chris McIntosh; Brian Cole; ARMY COMMUNICATIONS-ELECTRONICS COMMAND FORT BELVOIR VA NIGHT VISION AND ELECTRONIC SENSORS DIRECTORATE
|
| A compact, passively Q-switched Nd:YAG laser utilizing a Cr4+:YAG saturable absorber, is end-pumped by the focused emission from an 804 nm vertical-cavity surface-emitting laser (VCSEL) array. By changing the VCSEL operating current, we demonstrated 2x adjustability in the laser output pulse energy, from 9 mJ to 18 mJ. This energy variation was attributed to changes in the angular distribution of VCSEL emission with drive current, resulting in a change in ... |
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| Study of Xanthorhodopsin, the Retinal-Protein Proton Pump of Salinibacter ruber with Light-Harvesting Carotenoid Antenna |
19-Mar-2009 |
20 pages |
| Authors:
S P Balashov; J K Lanyi; CALIFORNIA UNIV IRVINE OFFICE OF SPONSORED PROJECTS ADMINISTRATION
|
| The project produced initial characterization of xanthorhodopsin, a novel carotenoid/retinal protein complex from the extremely halophilic eubacterium Salinibacter ruber, which functions as a light-driven proton pump. Its unique feature is a light-harvesting antenna, not found in any other retinal-based pumps. Fluorescence studies showed that 45% of light quanta absorbed by the carotenoid salinixanthin is transferred to retinal and used for transmembrane proton transport to energize ATP synthesis in the cells. ... |
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| A Theoretical Model Analysis of Absorption of a Three level Diode Pumped Alkali Laser |
Mar-2009 |
116 pages |
| Authors:
Lewis; Charlton D II; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This paper models the absorption phenomena of light in a three level diode pumped alkali laser system. Specifically this model calculates for a user defined set of system parameters the attenuation of the input pump beam and characteristics of the bleached wave. Using Wolfram's Mathematical 6.0 software all necessary physics for an accurate description of absorption was modeled from first principles: energy levels, cross sections, spin-orbit kinetic processes, saturation frequencies, ... |
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| Continuous System-Level Scale for Comparing Laser Gain Media |
Dec-2008 |
24 pages |
| Authors:
Jeffrey O White; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| Several quantities are proposed for facilitating a quantitative comparison of laser gain media, operating temperatures, pump, and laser wavelengths. They are based on the occupation probability of absorbing and emitting pump and laser levels. The system level, l, has a numerical value coinciding with conventional usage of the terms two-, three-, and four-level systems. The occupation factor has a value from -1 to +1, and is appropriate for describing an ... |
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| Assembly of Proteorhodopsin for Bioinspired Alternative Energy Applications |
Dec-2008 |
3 pages |
| Authors:
C Nguyen; J Ingram; H Liang; G Stucky; MILITARY ACADEMY WEST POINT NY DEPT OF CHEMISTRY
|
| Proteorhodopsin is an integral membrane protein that functions as a light-driven proton pump, which serves as the basis for an alternative energy device. While many membrane proteins are becoming understood, both structurally and mechanistically, little technology exists for the production and incorporation of this important class of molecules into useful devices. The advantage we have in working with proteorhodopsin is that it can be genetically modified and grown in the ... |
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| PSMA-Activated Imaging Agents for Prostate Cancer |
Feb-2008 |
12 pages |
| Authors:
Samuel R Denmeade; JOHNS HOPKINS HOSPITAL BALTIMORE MD
|
| In preliminary studies, a potent TG analog (12ADT) was coupled to a series of pentapeptides composed of varying combinations of Asp and Glu to create PSMA-activated prodrugs. One of these prodrugs with the sequence 12ADT-Asp-Glu*Glu*Glu*Glu was efficiently hydrolyzed by PSMA and resulted in accumulation of high levels of the cleaved product in tumor tissue compared to normal tissue. The goal of this study is to take advantage of this selective ... |
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| Using Structured Knowledge Representation for Context-Sensitive Probabilistic Modeling |
Jan-2008 |
30 pages |
| Authors:
Nikita A Sakhanenko; George F Luger; NEW MEXICO UNIV ALBUQUERQUE DEPT OFCOMPUTER SCIENCE
|
| We propose a context-sensitive probabilistic modeling system (COSMOS) that reasons about a complex, dynamic environment through a series of applications of smaller, knowledge-focused models representing contextually relevant information. COSMOS uses a failure-driven architecture to determine whether a context is supported and consequently whether the current model remains applicable. The individual models are specified through sets of structured, hierarchically organized probabilistic logic statements using transfer functions that are then mapped into ... |
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| Hydraulic Tomography and High-Resolution Slug Testing to Determine Hydraulic Conductivity Distributions - Year 3 |
DEC 2007 |
58 pages |
| Authors:
Carl D. McElwee; Rick Devlin; Brian Wachter; KANSAS UNIV LAWRENCE DEPT OF GEOLOGY
|
| A typical method used to determine fluid behavior in a geologic matrix near a well is a pumping test Here a pump is installed into a well and groundwater is removed or injected while water levels in surrounding observation wells are monitored. Then the aquifer parameters can be estimated by monitoring changes in water levels at observation wells at some distance These types of tests are typically large in scale, ... |
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| Army Corps of Engineers. Known Performance Issues with New Orleans Drainage Canal Pumps Have Been Addressed, but Guidance on Future Contracts is Needed |
DEC 2007 |
48 pages |
| Authors:
Anu K. Mittal; William T. Woods; Terrell G. Dorn; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| Hurricane Katrina caused several breaches in the floodwalls along three drainage canals in New Orleans, contributing to catastrophic flooding. To restore the pre-Katrina level of hurricane-related flood protection, the Army Corps of Engineers (Corps) decided to acquire several large-capacity pumping systems. During the process of acquiring, testing, and installing the pumping systems, issues with the pump contract and operation of the pumping systems came to light, including several identified in ... |
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| Intra-Theater Auxiliary Lift Ship |
Dec-2007 |
51 pages |
| Authors:
Oliver Sander; Parin Shah; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SHIP SYSTEMS INTEGRATION AND DESIGN DEPARTMENT
|
| The objective of this project was to develop a ship concept for Intra-Theater Auxiliary Lift Ship (ITALS), which involves transporting cargo at high speed within a theater of operations. The function of the ITALS vessel is to transfer rolling stock and cargo between cargo ships, Sea Bases and ports. Design requirements for the vessel included sprint speeds of up to 35 knots, a range of 2,500 nautical miles and the ... |
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| Micro Chemical Oxygen-Iodine Laser (COIL) |
OCT 2007 |
|
| Authors:
Carol Livermore-Clifford; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
 | It has been previously proposed to improve the performance and compactness of chemical oxygen-iodine lasers (COIL) through the replacement of some of their macroscale components with arrays of higher-performing microscale (MEMS) components. In this program, a MEMS singlet oxygen generator (SOG) to power a COIL laser was designed, microfabricated from silicon and glass wafers, and successfully demonstrated. The MEMS SOG contained an array of reaction channels for the chemical reaction ... |
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| Accurate Evaluation of Nonlinear Absorption Coefficients in InAs, InSb and HbCdTe Alloys (Postprint) |
06 JUN 2007 |
15 pages |
| Authors:
Shekhar Guha; Zhi G. Yu; SRINIVASAN KRISHNAMURTHY; Leonel P. Gonzales; SRI INTERNATIONAL MENLO PARK CA
|
| We present a full band structure calculation of temperature- and wavelength-dependent two-photon absorption (TPA) coefficients and free carrier absorption (FCA) cross sections in InAs, InSb, and Hg1−xCdxTe alloys. Although the wavelength dependence of the TPA coefficients agrees well with Wherrett expression, the accurately calculated values are smaller by a factor of 1.2 to 2.5. In addition, the TPA coefficient depends sensitively on the photoexcited carrier density in small gap material. ... |
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| Velocity Measurements Through the Pump of the X-Craft Tow Tank Model 5612 |
MAY 2007 |
38 pages |
| Authors:
Christopher J. Chesnakas; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| Flow through the pumps on a 1/15th scale model of the X-Craft, Model 5612, was measured. An external, strut-mounted, three-component LDV system was used to measure the flow ahead of the pump inlet, and an internal, three-component LDV system was used to measure the flow ahead of the rotor and inside the nozzle of the waterjet. These tests revealed the flow structure within the pump, and allowed the calculation of ... |
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| Theory of Second Harmonic Generation in Presence of Diffraction, Beam Walk-Off and Pump Depletion (Preprint) |
MAR 2007 |
16 pages |
| Authors:
Shekhar Guha; Leonel P. Gonzalez; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| Integral expressions for the pump and generated fields are presented here for the case of second harmonic generation of a focused Gaussian pump beam incident on a nonlinear crystal. The birefringent walk-off of the generated beam and the effect of pump depletion are included in the theory. |
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| Vibration Analysis Using a MEMS Accelerometer |
DEC 2006 |
61 pages |
| Authors:
Jonathan C. Young; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The primary objective of this thesis was to study the feasibility of using a MEMS accelerometer to monitor vibration signatures of a machine to determine if the machine is operating properly. The secondary objective was to investigate the self test features of the accelerometer used in the vibration monitoring. An Efector Octavis accelerometer sensor was used in this study. It was used to monitor a small air pump and an ... |
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| Cavitation Instabilities in Inducers |
01 NOV 2006 |
27 pages |
| Authors:
Yoshinobu Tsujimoto; OSAKA UNIV (JAPAN)
|
| Experimental observations of various kinds of cavitation instabilities are presented. Typical cavitation instabilities occur in the range of cavitation number where the inducer head is not affected by cavitation. This type of cavitation instability is caused by the cavity volume increase due to the increase of incidence angle and is treated in section 1. Another type of cavitation instability is caused by the positive slope of the pressure performance curve ... |
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| Unsteady Pressure and Velocity Measurements in Pumps |
01 NOV 2006 |
35 pages |
| Authors:
Detlev L. Wulff; TECHNICAL UNIV BRAUNSCHWEIG (GERMANY) INST OF FLUID MECHANICS
|
| The objective of this paper is to report the state-of-the-art of unsteady pressure measurements in pumps. Though optical techniques seem in some aspects more attracting, unsteady pressure measurements can give a detailed insight in static as well as dynamic operating behaviour of pumps. A brief description of wall mounted pressure transducers and of probes fitted with miniature pressure transducers will be given. The main topics of this report are: a) ... |
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| Pipeline Optimization Program (PLOP) |
AUG 2006 |
29 pages |
| Authors:
Derek Wilson; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This technical note describes the Pipeline Optimization Program (PLOP), a computer program that optimizes pipeline transport of slurry based on slurry pump performance, material characteristics, pipeline characteristics, and industrial standards. PLOP uses a rules-based programming language, C Language Integrated Production System (CLIPS). Rules-based languages are advantageous in addressing decision-making problems inherent to slurry pump and pipeline transport and are also consistent with the framework of the Dredging Operations Decision Support ... |
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| Study of Hydraulic System Component Storage with a Rust Inhibited Barium Free Development Hydraulic Fluid Candidate |
APR 2006 |
21 pages |
| Authors:
Lois J. Gschwender; Angie Campo; Carl E. Snyder; Shashi K. Sharma; Tim Jenney; George Fultz; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| METSS Corporation, under a Small Business Innovation Research program (F33615-96-C-5074) with AFRL/MLBT, developed a hydraulic fluid candidate known as METTS HyTherm CI-2. This fluid is intended to be rust inhibited, barium free, thermally stable and fire resistant hydraulic fluid suitable for aircraft use. METSS HyTherm CI-2 would eliminate the need for a separate storage fluid for components. The currently used storage fluid is classified as hazardous waste due to the ... |
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| Environmental Assessment: Demolish 934 of Grand Forks Air Force Base |
MAR 2006 |
102 pages |
| Authors:
Wayne A. Koop; 319 CIVIL ENGINEER SQUADRON GRAND FORKS AFB ND
|
| The United States Air Force (USAF) proposes to demolish building 934 belonging to Grand Forks Air Force Base (AFB), North Dakota. The purpose of the proposed action is to demolish 608 square feet of excess facility space in building 934, known as the booster station, by CES contract in FY 2006. Work includes removal of all plumbing, pumps and equipment, removal of the water lines from the water main into ... |
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| Validation of Methods to Measure Mass Flux of a Groundwater Contaminant |
MAR 2006 |
|
| Authors:
Hyouk Yoon; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| In this study, flux measurements obtained using two methods are compared with known mass fluxes in a meso-scale three-dimensional artificial aquifer. One method, the tandem recirculating well (TRW) method, is applied using two different techniques. One technique is simple and inexpensive, only requiring measurement of heads, while the second technique requires conducting a tracer test. The second method, the integrated pump test (IPT) method, requires use of one or more ... |
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| Environmental Assessment - Demolish 934 of Grand Forks Air Force Base |
MAR 2006 |
102 pages |
| Authors:
Diane Strom; 319 CIVIL ENGINEER SQUADRON GRAND FORKS AFB ND
|
| The purpose of the proposed action is to demolish 608 square feet of excess facility space in building 934, known as the booster station, by CES contract in FY 06. Work includes removal of all plumbing, pumps and equipment, removal of the water lines from the water main into the building, replacement of the 14 tees on the water main with a straight piece of pipe, maintain the existing check ... |
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| Pump and Signal Taper for Airclad Fibers |
05 JAN 2006 |
8 pages |
| Authors:
Rene E. Kristiansen; Martin D. Nielsen; CRYSTAL FIBRE BIRKEROD (DENMARK)
|
| This report results from a contract tasking Crystal Fibre A/S as follows: Crystal Fibre A/S will develop a taper/coupler solution to interface between a new polarization maintaining/polarizing amplifier fiber (DC-200-35-Yb-PM) and respectively pump fibers and a signal input fiber. The anticipated intermediate interface will be a 250 micron/0.46 NA pump guide and 20 micron MFD PM signal core fiber. We will seek to further interface this fiber to a tapered ... |
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| Integrated Chemical Fuel Microprocessor for Power Generation in MEMS Applications |
24 AUG 2005 |
40 pages |
| Authors:
Klavs F. Jensen; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING
|
| This document reports results obtained via Integrated Chemical Fuel Microprocessor for Power Generation in MEMS Applications" during the performance period, 1 September 1999 - 31 March 2004. The overall goal of this program was to demonstrate a chemical fuel processing microsystem for power generation in MEMS applications. The program had several major accomplishments: 1. Development and fabrication of a new, thermally efficient, suspended tube MEMS heat exchanger/fuel processor. 2. Design ... |
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| Hapsite Gas Chromatography - Mass Spectrometry with Solid Phase Microextraction |
18 JUL 2005 |
51 pages |
| Authors:
|
| Rapid air sampling can be accomplished with solid phase microextraction (SPME) to avoid the difficulties of pumps and wet chemistry. Gas chromatography with mass spectrometry (GC/MS) is the gold standard for identifying volatile and semi volatile chemicals. Combining SPME with a portable HAPSITE GC/MS may allow rapid chemical identification outside of a laboratory. Six chemicals at six concentrations were tested using four sample introduction methods. The four methods included the ... |
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| Threshold Dependence on the Spectral Alignment Between the Quantum-Well Gain Peak and the Cavity Resonance in InGaAsP Photonic Crystal Lasers |
01 JUN 2005 |
4 pages |
| Authors:
J. R. Cao; Wan Kuang; Seng-Jun Choi; Po-Tsung Lee; John D. O'Brien; P. D. Dapkus; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL ENGINEERING AND ELECTROPHYSICS
|
| Lithographically defined multi wavelength photonic crystal laser arrays are reported. The dependence of the threshold pump power on the spectral alignment between the quantum-well gain peak and the cavity resonance wavelength is investigated. This is done at, and slightly above, room temperature. |
|
| Room-Temperature Operation of VCSEL-Pumped Photonic Crystal Lasers |
01 JUN 2005 |
4 pages |
| Authors:
Po-Tsung Lee; J. R. Cao; Sang-Jun Choi; Zhi-Jian Wei; John D. O'Brien; P. D. Dapkus; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL ENGINEERING AND ELECTROPHYSICS
|
| Room-temperature operation of two-dimensional photonic crystal lasers optically pumped by a vertical-cavity surface-emitting laser emitting at 860 nm is reported. The photonic crystal membrane is surrounded by air on both sides and consists of four compressively strained quantum wells as the active region. The incident threshold pump power of an approximately 2.6- m-diameter hexagonal defect cavity laser operating at 1.6 m is 2.4 mW. |
|
| Operation of Photonic Crystal Membrane Lasers above Room Temperature |
01 JUN 2005 |
4 pages |
| Authors:
Po-Tsung Lee; J. R. Cao; Sang-Jun Choi; Zhi-Jian Wei; John D. O'Brien; P. D. Dapkus; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL ENGINEERING AND ELECTROPHYSICS
|
| Operation of photonic crystal lasers for substrate temperatures as high as 50 degrees C is reported. The temperature dependence of the lasing wavelength and the threshold pump power is also investigated. The characteristic temperature To is 37.7 K. |
|
| Biofluidic Transport and Molecular Recognition in Polymer Microdevices |
29 APR 2005 |
23 pages |
| Authors:
Robert H. Davis; Kristi S. Anseth; Christopher N. Bowman; COLORADO UNIV AT BOULDER
|
| Polymeric microfluidic components were fabricated using living- radical photopolymerization (LRPP), including three-dimensional geometries, modified surfaces by grafting, microporous mixers/filters, micropumps, wires, and movable parts. LRPP enables controlled geometry and surface chemistry for fluid control, biomolecular and cell detection, and particle sorting. Key accomplishments include specific cell adhesion and cytocompatibility demonstrated with grafted surfaces, a fluid-responsive polymer micropump integrated on a device and characterized, a porous polymer plug fabricated within a ... |
|
| Modeling Groundwater Flow and Contaminant Transport in Fractured Aquifers |
MAR 2005 |
119 pages |
| Authors:
Jason M. Bordas; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The hybrid discrete fracture network/equivalent porous medium (DFN/ EPM) model was selected for analysis and application to simulate a contaminated site in this study. The DFN/EPM was selected because it appeared to have the potential to aid decision making by remedial project managers at contaminated DoD fractured aquifer sites. This model can use data that are typically available at a site while incorporating the important processes relevant to describing contaminant ... |
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| Boiling Heat Transfer Surface |
05 JAN 2005 |
12 pages |
| Authors:
Robert Kuklinski; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This patent application relates to a system for a vehicle that creates and maintains a gas/vapor cavity to reduce drag and increase propulsion efficiency. The gas/vapor cavity also can be used to reduce noise received by a sonar system. The system to create and maintain a gas/vapor cavity about a hull surface includes a fence selectively extendable above and below the hull surface. A gas venting means is positioned beneath ... |
|
| Boiling Heat Transfer Torpedo |
05 JAN 2005 |
22 pages |
| Authors:
Robert Kuklinski; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This patent application discloses a system for a torpedo that creates and maintains a vapor cavity to reduce drag and increase propulsion efficiency. The system has a source of gas venting gas at a nose portion of the vehicle to create a gas/vapor cavity on the nose portion and an adjacent hull of the vehicle. A thermal engine propelling the vehicle through ambient water creates waste heat for heating the ... |
|
| Advanced Thermal Management for Military Application |
DEC 2004 |
9 pages |
| Authors:
David Allen; Wsewolod Hnatczuk; Michael Lasecki; Robert Chalgren; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| Today's coolant system consists mainly of technologies that have remained virtually unchanged for almost a century, yet modern day engines have advanced significantly in almost all other areas. A large amount of the engines horsepower goes into this antiquated and inefficient thermal system. Recent testing has shown that by properly controlling pumps, valves and fans, significant efficiency and emission improvements can be realized. Along with these benefits are improvements in ... |
|
| Test System for a Flexible Tube |
20 SEP 2004 |
13 pages |
| Authors:
Wendell C. Maciejewski; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This patent application discloses a system for testing a flexible tube. Another object of the present invention is to provide a system for testing a flexible tube that minimizes unwanted tube distortion. Still another object of the present invention is to provide a system for testing the fluid handling performance of the flexible tube as the flexible tube experiences load conditions. First and second hollow mandrels are inserted into opposing ... |
|
| Shipboard Applications of Non-Intrusive Load Monitoring |
JUN 2004 |
132 pages |
| Authors:
Jack S. Ramsey Jr; FLORIDA STATE UNIV TALLAHASSEE DEPT OFPHYSICS
|
| The Non-Intrusive Load Monitor (NILM) provides a method of measuring component performance and source power quality through a single point of entry in the power distribution system. A study was performed utilizing the NILM onboard three different ships (along with experimentation in the laboratory) to determine its effectiveness in determining the state of mechanical systems through analysis of electrical power data. Data collected from the Auxiliary Seawater System onboard the ... |
|
| Attachment 5 to PRDA 04-01 PKT: AFRL/PRSS Electric Propulsion Facilities and Capabilities |
26 JAN 2004 |
6 pages |
| Authors:
Frank Gulczinski; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
|
| Cost And Performance Report. Use of Prepump Separation Technologies to Enhance Cost-Effectiveness of Bioslurper Systems: Long Term Demonstration. |
DEC 2003 |
37 pages |
| Authors:
NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| Bioslurping is a demonstrated technology for removing light, nonaqueous-phase liquid (LNAPL) from contaminated aquifers. It combines vacuum- assisted LNAPL recovery with bioventing and soil vapor extraction (SVE) to simultaneously recover LNAPL and bioremediate the vadose zone. A conventional bioslurper system withdraws free-phase LNAPL from the water table, groundwater, and soil vapor in a single process stream, using the air lift created by an aboveground liquid ring pump. The recovered LNAPL ... |
|
| Evaluation of Intravenous Therapy Devices in the Hyperbaric Chamber |
DEC 2003 |
12 pages |
| Authors:
D. F. Stanga; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
|
| Ventilators, cardiac monitors, intravenous (IV) pumps, and other equipment are being evaluated to meet a U.S. Navy-identified need to improve patient care levels in the hyperbaric environment. Though the MTP MILITARY is currently the only IV pump that has been found suitable for use in the hyperbaric chamber, a search of the market has identified three pumps that afford increased capability for patient care. This report presents results from a ... |
|
| Towable Submarine Mast Simulator |
06 OCT 2003 |
21 pages |
| Authors:
Duane M. Horton; DEPARTMENT OF THE NAVY WASHINGTON DC
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| This patent application discloses a submarine mast simulator as part of a buoyant tow body having a hydrodynamically shaped shell. The mast simulator includes a rigid lower mast section and an inflatable upper mast section extendable from the tow body. A plurality of stabilizer fins extend radially from the tail of the tow body, the fins being actuated to cause the ascent and descent of the tow body. A pressure ... |
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| Synthetic Fuel Lubricity Evaluations |
SEP 2003 |
50 pages |
| Authors:
Edwin A. Frame; Ruben A. Alvarez; SOUTHWEST RESEARCH INST SAN ANTONIO TXTARDEC FUELS AND LUBRICANTS RESEARCH FACILITY
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| Synthetic fuel designated S-5 was evaluated for fuel lubricity properties in bench scale and rotary injection pump tests. S-5 fuel was evaluated in the BOCLE SLBOCLE and HFRR bench tests. The effect of MlL-PRF-2501 7 additive on S-5 lubricity was determined in the bench tests. Rotary injection pump tests were conducted for up to 500 hours using S-5 fuel and S-5 fuel additized with MlL-PRF-25017. Neat S-5 fuel exhibited poor ... |
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