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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>FLY ASH. VOLUME 3. 1978-NOVEMBER, 1979 (CITATIONS FROM THE NTIS DATA BASE)</title>
      <link>https://trid.trb.org/View/150341</link>
      <description><![CDATA[Government-sponsored research on fly ash generation, collection, disposal, and use is cited in the compilation. Studies on dust collection devices, filters, precipitators, and scrubbers are included. Additives for fly ash conditioning and combustion modification are studied, as well as fly ash analysis and fly ash related pollution sampling. The use of fly ash in soil stabilization, roads, cements, construction materials, and as absorbents are also covered. 132 of which are new entries to the previous edition.)]]></description>
      <pubDate>Tue, 07 May 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/150341</guid>
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    <item>
      <title>SIMPLE ENGINEERING CHANGES FIX PRODUCT RECOVERY PROBLEMS</title>
      <link>https://trid.trb.org/View/482174</link>
      <description><![CDATA[This final article in a two-part series presents two case studies detailing revamp problems. One occurred in an absorber/stripper and the other, in a stripper reboiler. These cases show how simple measures were used to diagnose and solve the problems.]]></description>
      <pubDate>Fri, 25 Apr 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/482174</guid>
    </item>
    <item>
      <title>ACOUSTICALLY QUIET, PASSIVE LOAD FOR TESTING LOW-SPEED MOTORS; PATENT</title>
      <link>https://trid.trb.org/View/448706</link>
      <description><![CDATA[The load absorbing device is housed in a fluid filled housing for cooling and vibration damping purposes. The device includes a rotating disc coupled to the motor output shaft, and brake calipers for engaging the disc periphery to incrementally increase the torque load on the motor. A support structure shields these components and serves as the support for the motor to be tested. Vibration isolating mounts are used to support both the motor and the housing for these components. (MM).]]></description>
      <pubDate>Tue, 02 Jan 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/448706</guid>
    </item>
    <item>
      <title>LIGHT RESISTANCE OF POLYPROPYLENE</title>
      <link>https://trid.trb.org/View/110097</link>
      <description><![CDATA[THE STABILITY OF POLYPROPYLENE ON EXPOSURE TO LIGHT AND THE MEANS FOR IMPROVING ITS LIGHT RESISTANCE ARE DISCUSSED. POLYPROPYLENE IS SUSCEPTIBLE TO OXIDATION. TYPES OF ADDITIVES WIDELY USED TO PROTECT POLYPROPYLENE ARE ANTIOXIDANTS, HYDROPEROXIDE DECOMPOSERS, AND LIGHT STABILIZERS. CARBON BLACK IS THE MOST EFFECTIVE LIGHT ABSORBING PIGMENT. THE LIFETIME OF POLYPROPYLENE VARIES APPROXIMATELY AS THE SQUARE ROOT OF THE ULTRAVIOLET ABSORBER CONCENTRATION. DATA ON PIGMENTS VS. WEATHERING OF POLYPROPYLENE IN FLORIDA AND THE EFFECT OF LINEAR ORIENTATION ON WEATHERING OF THIN GENERAL-PURPOSE POLYPROPYLENE FILM ARE GIVEN IN TABLES.]]></description>
      <pubDate>Tue, 27 Sep 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/110097</guid>
    </item>
    <item>
      <title>THE SCORE ON WEATHERABILITY</title>
      <link>https://trid.trb.org/View/106585</link>
      <description><![CDATA[AN EXAMINATION OF OUTDOOR INSTALLATIONS OF PLASTICS THAT HAVE BEEN EXPOSED FOR SOME LENGTH OF TIME LEADS TO THE FOLLOWING CONCLUSIONS: (1) SOME PLASTICS HAVE INHERENT WEATHERABILITY AND HAVE EXHIBITED NO SIGNIFICANT DEGRADATION OVER LONG PERIODS OF TIME, AND (2) MANY OF THOSE WHOSE WEATHERABILITY IS INADEQUATE CAN BE MODIFIED TO IMPROVE THAT PROPERTY SUFFICIENTLY TO MAKE IT ACCEPTABLE BY USING LIGHT SCREENS, UV LIGHT ABSORBERS AND STABILIZERS TO PROTECT PLASTICS FROM THE HARMFUL RAYS OF THE SUN, AND ANTIOXIDANT COMPOUNDS THAT SERVE TO ARREST THE DAMAGING EFFECTS OF OXYGEN. CARBON BLACK IS THE MOST EFFECTIVE AND ECONOMICAL SCREEN. HOWEVER, IT ABSORBS LIGHT ACROSS THE WHOLE SPECTRUM AND TENDS TO CONVERT THE SOLAR ENERGY IT ABSORBS INTO HEAT, ACCELERATING DEGRADATION BY THERMAL OXIDATION. THIS PROCESS CAN BE ARRESTED BY INCORPORATION OF THE APPROPRIATE ANTIOXIDANT INTO THE COMPOUND. THE LONGEVITY OF PLASTICS OUT -OF-DOORS THUS DEPENDS ON JUST THE RIGHT COMBINATION OF UV LIGHT ABSORBERS AND ANTIOXIDANTS. THE EXPERIENCE OF THE BELL TELEPHONE SYSTEM WITH POLYETHYLENE, POLYVINYLCHLORIDE IS REVIEWED. EXPERIENCES OF OTHER OUTDOOR USERS WITH THESE COMPOUNDS AND POLYVINYL FLUORIDE, BUTYRATES, EPOXIES AND FLUOROCARBON RESINS ARE ALSO REVIEWED.]]></description>
      <pubDate>Sun, 16 Jan 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/106585</guid>
    </item>
    <item>
      <title>METHODS AND MATERIALS FOR REDUCING CRACK REFLECTANCE. FINAL REPORT</title>
      <link>https://trid.trb.org/View/212990</link>
      <description><![CDATA[This study was initiated to study methods, procedures and/or materials that may reduce premature pavement failures of asphaltic concrete overlays on pcc pavement caused by excessive reflective cracking.  Methods included in this study were reducing the existing pcc pavement panel size by saw cutting, full coverage fabrics, strip fabrics and Rubber-Asphalt Interlayer as a stress absorbing membrance interlayer (SAMI).  No material or method was found that would totally eliminate reflective cracking.   Reducing the existing pcc pavement panel size and the use of the Rubber-Asphalt Interlayer were the two procedures that provided the best results.  (Author)]]></description>
      <pubDate>Wed, 30 Nov 1988 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/212990</guid>
    </item>
    <item>
      <title>THE FULL SCALE EXPERIMENTAL VERIFICATION OF AN ANALYTICAL MODEL FOR EVALUATING METHODS OF SUPPRESSING EXCESSIVE BRIDGE VIBRATIONS</title>
      <link>https://trid.trb.org/View/136918</link>
      <description><![CDATA[This report describes the design, installation and testing of a passive, damped and tuned vibration absorber for reducing the dynamic responses of a specific simple span bridge during and following the passage of a vehicle. In addition, the experimentally measured effectiveness of the vibration absorbers was compared with the predicted results from a computerized theoretical model in which the bridge is considered as an equivalent simply supported beam with damping. The vibration absorber system which was installed on the underside of the 97 foot span steel girder two-lane bridge weighed 32,000 pounds. The field testing involved the measurement of bridge dynamic responses before and after installation of the absorber. Bridge excitation was induced by the passages of a 3-axle vehicle in various lanes, at various speeds and with various loads. Although the overall average bridge vibration reduction was lower than predicted, the measured strains, displacements and accelerations of the bridge were reduced significantly on certain vehicle runs. The damping of residual bridge vibrations was also appreciably increased. The research findings indicated the need for more sophisticated analytical models for the bridge/absorber/ vehicle system to permit the improved design of specific passive vibration absorbers. Provision for adjustable field tuning and/or damping in the individual components of the vibration absorber system could also increase the effectiveness. Further tests of this nature on more flexible spans would also serve to define the absorber effectiveness more precisely.  /FHWA/]]></description>
      <pubDate>Sat, 09 Jan 1988 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/136918</guid>
    </item>
    <item>
      <title>PERFORMANCE TESTS OF HIGH SPEED ZRV OIL SKIMMER</title>
      <link>https://trid.trb.org/View/162188</link>
      <description><![CDATA[A self-propelled catamaran oil skimmer developed by the USCG capable of recovering oil from a water's surface was tested at the U.S. EPA OHMSETT facility. The skimmer employed an endless composite sorbent belt processed between the catamaran hulls to recover oil. The tests were designed to determine the effect that various parameters (skimmer speed, oil viscosity, oil thickness, wave conditions, etc.) have upon oil recovery performance. The skimmer was towed through oil slicks at various speeds in different wave conditions as it was operated to collect oil. The collected fluid was quantitatively analyzed to determine the device's oil-to-water recovery ratio (recovery efficiency), oil recovery rate and thoroughness of slick removal (throughput efficiency). The device proved capable of good throughput efficiency in all wave conditions (up to 0.7 m confused seas) at all the tow speeds tested (1 to 6 knots). Throughput efficiencies of 80 to 90% in calm water were common with all the oils tested. The performance of the full-scale skimmer agreed well with the results from the smaller prototype tested in 1976. The successful development of this skimmer provides a significant advance in oil spill recovery capability and technology. The concept used in this oil skimmer can be employed at speeds greater than those tested. Two oil slick converging systems were tested with the skimmer to effectively double the sweep width of the skimmer. Additional tests were conducted to determine vessel resistance and motion in waves and to assess the buildup of potentially explosive vapors within the oil recovery system. (Author)]]></description>
      <pubDate>Fri, 11 Dec 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/162188</guid>
    </item>
    <item>
      <title>AN ACCIDENT-RATE AND SEVERITY-RATIO QUALITY-CONTROL TECHNIQUE FOR IDENTIFYING HAZARDOUS ROADWAY LOCATIONS</title>
      <link>https://trid.trb.org/View/147517</link>
      <description><![CDATA[Budgetary constraints have initiated development of several schemes for establishing roadway-improvement priorities. Inherent in most of these programs is a technique for identifying the most appropriate roadway locations requiring improvements.  In the past, except for situations where capacity limitations are evident, safety has generally been the criterion used to justify roadway improvements. Therefore, those roadway locations that are relatively the most hazardous and most susceptible to improvement must be identified.  Quality-control techniques were first applied for this identification purpose over 20 years ago.  However, most applications have been associated with accident-number or accident-rate data. Use of accident-severity criteria in quality-control methods is still vague.  This paper provides an overview of existing identification techniques.  Further, by defining severity as the ratio of fatal and injury accidents to all accidents, a severity quality-control technique for identifying hazardous roadway locations is presented.  This technique incorporates both accident-rate and accident-severity criteria. /TRRL/]]></description>
      <pubDate>Tue, 22 Apr 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/147517</guid>
    </item>
    <item>
      <title>ENGINEERING EVALUATION OF SORBENT DISPENSING/COLLECTION SYSTEM-UNIVERSAL MOUNTING ARRANGEMENT</title>
      <link>https://trid.trb.org/View/144174</link>
      <description><![CDATA[The success of the Sorbent Oil Recovery System in the open sea will depend greatly on its mode of transportation through the oil slick. This study was made to identify optimum vessels and mounting concepts. Sorbent system requirements were established from which candidate vessels were identified. Alternative mounting concepts were defined and evaluated which resulted in the recommendation of developing a new component arrangement which minimizes interaction between the Sorbent Oil Recovery System and the candidate vessel.]]></description>
      <pubDate>Mon, 31 Mar 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/144174</guid>
    </item>
    <item>
      <title>JET ENGINE EXHAUST ANALYSIS BY SUBTRACTIVE CHROMATOGRAPHY</title>
      <link>https://trid.trb.org/View/89104</link>
      <description><![CDATA[This report describes the further refinement of a method for the sampling and analysis of organics in jet engine exhaust by chemical classes. Details for the selection, construction, and evaluation of the combination sorbent (Tenax-GC/Ambersorb XE-340) sampling system are given along with the rationale and operational parameters for the subtractive chromatography system that produces the organic class analysis. The significant improvements incorporated into both the sampling and analytical systems compared with previous systems used in a jet engine exhaust study of March 1975 are discussed. The capabilities of the system are illustrated by the analysis of actual jet engine exhaust samples from a J85-5 engine using JP-4 and an alternate fuel blend that simulates the higher aromatic content expected from shale and coal-derived fuels. (Author)]]></description>
      <pubDate>Wed, 17 Oct 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/89104</guid>
    </item>
    <item>
      <title>FEASIBILITY STUDY OF RESPONSE TECHNIQUES FOR DISCHARGES OF HAZARDOUS CHEMICALS THAT FLOAT ON WATER</title>
      <link>https://trid.trb.org/View/69650</link>
      <description><![CDATA[An in depth evaluation was conducted of potential response techniques for ameliorating the vapor hazard from discharges of hazardous chemicals that float on water. Fifteen techniques were selected on the basis of their performance in similar situations, such as oil spills and hazardous chemical production or handling. Six of these techniques were judged to be feasible methods for achieving the objectives of this program. Vaporization rate reduction, the objective of Task I, could be achieved by using surfactant films, foams or sorbents. Vapor concentration reduction, the objective of Task II, could be achieved by encapsulation. Vapor flammability reduction, the objective of Task III, could be achieved by using foams and water aerosols. Techniques utilizing particulate cover, 'foamed-in-place' urethane layer, gels and cryogenic cooling were defined as having potential for successful utilization. All techniques were judged to need some further development or assessment. Recommendations for specific programs are presented. (Author)]]></description>
      <pubDate>Wed, 26 Apr 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/69650</guid>
    </item>
    <item>
      <title>A ZERO-RELATIVE-VELOCITY BELT SKIMMER, STAGE II - CONFIRMING TESTS AND PROTOTYPE DESIGN</title>
      <link>https://trid.trb.org/View/56389</link>
      <description><![CDATA[A 40-foot-long prototype skimming vessel has been designed which uses twin floating sorbent belts to recover spilled oil in 6-8 knot currents. Oil recovery rates up to 600 gpm are possible with the prototype because the composite belts are propelled at the same speed as the water (relative to the vessel). The performance of this zero-relative-velocity (ZRV) belt arrangement was tow-tested at full scale in calm water and in waves. Also tested for proper motion response was a 1/8-scale model of the catamaran vessel that supports the oil recovery apparatus. Results from the test program were used to aid the prototype ZRV Skimmer design effort and quantify its projected oil recovery performance. (Author)]]></description>
      <pubDate>Tue, 20 Sep 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/56389</guid>
    </item>
    <item>
      <title>A STUDY TO DEFINE PHYSICAL AND ACOUSTICAL PARAMETERS OF EXTERIOR TRUCK NOISE TEST MEASUREMENT SITES</title>
      <link>https://trid.trb.org/View/62739</link>
      <description><![CDATA[Truck exterior noise test sites are presently prescribed as being level and free from powdery snow, long grass, loose soil and ashes.  These general terms are used to describe the requirements of a noise test site with regard to the surface flatness and the amount of absorptive materials permitted.  The purpose of this study was to better define the parameters that describe the physical and acoustical properties of a test site.  The physical properties that were studied were the microphone height and the test site surface flatness.  The acoustical property that was studied was the absorption coefficient of the test site surface.  By specifying allowable limits on these parameters, a noise test site may be checked to see if it is acceptable as a "standard" site.]]></description>
      <pubDate>Tue, 31 May 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/62739</guid>
    </item>
    <item>
      <title>OIL SPILL CLEAN UP USING A COTTON SORBENT</title>
      <link>https://trid.trb.org/View/47629</link>
      <description><![CDATA[A 19-month study was conducted to develop a sorbent dispersal, retrieval, and disposal system using cotton wastes to combat oil pollution. A test program developed the design data base required to evaluate the concept as well as the system components. Major variables studied included crude oil type, sorbent to oil weight ratios, sorbent contact time, removal efficiencies, squeezing techniques, disposal via incineration, and air pollution parameters. It is concluded that the concept of using cotton as an oil spill clean-up agent is viable and that the system as operated was capable of retrieving approximately 95% of the oil confronted for water velocities of 2 feet per second or less and dispersion ratios of 0.05 (or greater) pounds of cotton per pound of oil.]]></description>
      <pubDate>Wed, 30 Mar 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/47629</guid>
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