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    <title>Transport Research International Documentation (TRID)</title>
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    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
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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>Research on atmospheric components aging behavior of asphalt binders based on multi-scale analysis</title>
      <link>https://trid.trb.org/View/2558933</link>
      <description><![CDATA[To investigate the contribution of atmospheric components (nitrogen, oxygen, carbon dioxide, noble gases) to the deterioration of asphalt binder properties, the atmospheric components aging tests, scanning electron microscope (SEM) tests and atomic force microscope (AFM) tests were combined to reveal the multi-scale aging behavior of asphalt binders subjected to different atmospheric components. Firstly, the atmospheric components aging test was designed to obtain the aged asphalt binder samples under the conditions of pure nitrogen, oxygen, carbon dioxide and noble gases (helium), and to compare their macro morphological characteristics. Subsequently, the micro effects of different atmospheric components on asphalt binder were analyzed by asphalt SEM testing, and the evolution mechanism of its micro-morphology was revealed. Finally, the nano characteristics of aged asphalt binder with different atmospheric components were analyzed and compared by asphalt AFM testing, and the nano mechanism of surface interaction was explored. Results show that different atmospheric components have different effects on the aging behavior of asphalt binders, in which the contribution of oxygen is more obvious, while helium plays a delayed effect. The surface macro-morphology and micro-morphology can be mainly reflected in the morphology and distribution characteristics of fold structures and crack structures, and the nano-morphology can be mainly displayed in the "bee structure". The study lays a foundation for the research and development of anti-aging asphalt binder suitable for specific regional climate, and has certain theoretical and engineering research significance.]]></description>
      <pubDate>Fri, 20 Jun 2025 11:58:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/2558933</guid>
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    <item>
      <title>Spatiotemporal variation and inter-transport of atmospheric speciated mercury between Kaohsiung Harbor and neighboring urban areas</title>
      <link>https://trid.trb.org/View/2305055</link>
      <description><![CDATA[This study investigated the spatiotemporal variation, gas-particle partition, and source resolution of atmospheric speciation mercury (ASM) in Kaohsiung Harbor and neighboring Metro Kaohsiung. Four sampling sites were selected to determine the pollution characteristics and inter-transport of ASM between the port and urban areas. The yearly average GEM, GOM, and PBM concentrations were 7.13 ± 2.2 ng/m³, 331 ± 190 pg/m³, and 532 ± 301 pg/m³, respectively. Notably, GEM emerged as the predominant ASM species (85–94%), primarily originating from anthropogenic emissions from the harbor area and nearby industrial complex. The study revealed a distinct seasonal variation in ASM concentrations in the Kaohsiung Area in the following order: winter > fall > spring > summer. Concerning spatial distribution, ASM concentrations in the port areas were generally higher than those in the urban areas. This disparity was chiefly attributed to the influence of the prevailing winds, local sources, and atmospheric dispersion. Backward trajectory simulation revealed that polluted air masses blown from the northeast in winter and spring, moving along the western in-land part of Taiwan Island, were likely influenced by local sources and long-range transport (LRT). In summer, air pollutants originating from the south were likely transported from the coastal industrial sources. During fall, air masses blown from the western offshore waters transport air pollutants from Kaohsiung Harbor to neighboring Metro Kaohsiung. The results obtained from principle component analysis (PCA) indicated that primary sources in the port areas included ship emissions, vehicular exhausts, and nearby industrial complex, which align with the primary source factors identified by the positive matrix factorization (PMF), which were mobile sources and coal-fired industrial boilers. Meanwhile, mobile sources and sulfur-containing fuel/waste combustion were identified as the primary sources in the urban areas.]]></description>
      <pubDate>Wed, 27 Mar 2024 11:52:26 GMT</pubDate>
      <guid>https://trid.trb.org/View/2305055</guid>
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    <item>
      <title>Theoretical–Calculation Model for Determination on Stress and Load-Bearing Capacity in Rail Track With Corrosion</title>
      <link>https://trid.trb.org/View/1705157</link>
      <description><![CDATA[The researches, connected with the clarification of the influence of the corrosion over the stress and the capability of carrying weight are a key-factor for the correct evaluation of the state of the elements. All the rails are practically subjected to the influence of the atmosphere, so all of them are under the effects of the atmospheric corrosion, which can have three different aspects – reduction of the geometrical characteristic of the section appearance of surface defects (structural changes) and decrease of the mechanical properties. In this study, the authors present a theoretically calculated module to determine the factual borders of the stress and the possibility of carrying weight of a rail track with corrosion (type “continuous beam”). Dependencies are derived and computational algorithms with calculations and numerical realisation as well.]]></description>
      <pubDate>Tue, 26 May 2020 17:26:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/1705157</guid>
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    <item>
      <title>Corrosion Sensor Development for Condition-Based Maintenance of Aircraft</title>
      <link>https://trid.trb.org/View/1146659</link>
      <description><![CDATA[Aircraft routinely operate in atmospheric environments that, over time, will impact their structural integrity. Material protection and selection schemes notwithstanding, recurrent exposure to chlorides, pollution, temperature gradients, and moisture provide the necessary electrochemical conditions for the development and profusion of corrosion in aircraft structures. For aircraft operators, this becomes an important safety matter as corrosion found in a given aircraft must be assumed to be present in all of that type of aircraft. This safety protocol and its associated unscheduled maintenance requirement drive up the operational costs of the fleet and limit the availability of the aircraft. Hence, there is an opportunity at present for developing novel sensing technologies and schemes to aid in shifting time-based maintenance schedules towards condition-based maintenance procedures. In this work, part of the ongoing development of a multiparameter integrated corrosion sensor is presented. It consists of carbon nanotube/polyaniline polymer sensors and commercial-off-the-shelf sensors. It is being developed primarily for monitoring environmental and material factors for the purpose of providing a means to more accurately assess the structural integrity of aerospace aluminium alloys through fusion of multiparameter sensor data. Preliminary experimental test results are presented for chloride ion concentration, hydrogen gas evolution, humidity variations, and material degradation.]]></description>
      <pubDate>Mon, 30 Jul 2012 09:50:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1146659</guid>
    </item>
    <item>
      <title>Atmospheric Oxidative Chemistry of Organic Particulate Emissions from Fuel Combustion</title>
      <link>https://trid.trb.org/View/1138412</link>
      <description><![CDATA[This report presents the construction and characterization of the University of Vermont Environmental Chamber (UVMEC) for the study of atmospheric reactions of volatile compounds. The experimental system has been designed to permit the generation and measurement of low-level (sub ppmv) oxidants inside the reaction chamber. The primary function of the UVMEC is to enable tropospheric particulate formation and aging studies to be performed on environmentally relevant timescales.]]></description>
      <pubDate>Wed, 16 May 2012 15:05:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/1138412</guid>
    </item>
    <item>
      <title>ANNUAL REPORT OF LAWRENCE LIVERMORE LABORATORY TO THE FAA ON THE HIGH ALTITUDE POLLUTION PROGRAM-1979</title>
      <link>https://trid.trb.org/View/169011</link>
      <description><![CDATA[This annual report documents the progress made on research in support of the High Altitude Pollution Program (HAPP) during FY-1979. The primary research emphases at LLNL are numerical modeling of the atmospheric response to stratospheric perturbations and processing and analyzing satellite data to determine stratospheric ozone concentrations. The modeling effort at LLNL covers four major research areas: photochemical kinetics, coupled kinetics and transport, radiative transfer, and meteorological analysis. Tasks completed during the past year included: comparison of model simulations of stratospheric composition with observational data, simulations of past perturbations to the stratosphere, and assessments of potential changes resulting from aircraft engine emissions and other perturbations. The satellite data processing task has three major areas of effort: (1) radiative transfer and ozone retrieval methodology, (2) data processing, archiving, and distribution, and (3) data analysis, interpretation, and quality assurance. Progress in each of these areas is reviewed toward the goal of implementing the retrieval methodology during FY-1980. (Author)]]></description>
      <pubDate>Wed, 09 Jul 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/169011</guid>
    </item>
    <item>
      <title>STRATOSPHERIC REACTIONS OF PEROXYNITRIC ACID</title>
      <link>https://trid.trb.org/View/177149</link>
      <description><![CDATA[Both HO2 and NO2 play crucial roles in the chemistry of the upper atmosphere. For several years, these two species were thought to react via a radical disproportionation reaction, although it was suggested that a longer-lived complex could be formed according to reaction (1): HO2 + NO2 + M reversible reaction HOONO2 + M. The importance of reaction (1) has recently been verified by direct observation of HO2NO2 by Fourier transform infrared spectroscopy. Moreover, the rate of reaction (1) has been measured, and its reverse reaction (-1) has been studied. Also, RRKM theory has been applied to these data for reaction (-1) so that its rate can be reliably estimated as a function of both temperature and pressure. In another publication, the effect of HO2NO2 on tropospheric photochemical smog chemistry was discussed.]]></description>
      <pubDate>Mon, 30 Jun 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/177149</guid>
    </item>
    <item>
      <title>CHEMICAL KINETIC AND PHOTOCHEMICAL DATA SHEETS FOR ATMOSPHERIC REACTIONS</title>
      <link>https://trid.trb.org/View/162595</link>
      <description><![CDATA[A set of individual data sheets for gas phase chemical reactions and photochemistry of neutral species is presented. These data sheets give preferred values for reaction rate constants, photoabsorption cross sections and quantum yields with a brief statement discussing the basis for the preferred value. Recent experimental results are also given. The coverage of this initial set of data sheets issued in February 1980 corresponds to the approximately 400 reactions listed in NBS Special Publication 513, R. F. Hampson and D. Garvin, May 1978. For approximately one quarter of these reactions the data entry has been updated to include the 1979 recommendations of the NASA Panel for Data Evaluation and the CODATA Task Group on Chemical Kinetics. They are intended to provide the basic physical chemical data needed as input data for calculations modeling atmospheric chemistry. Revisions and additions for specific reactions will be published as new information becomes available.]]></description>
      <pubDate>Wed, 12 Mar 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/162595</guid>
    </item>
    <item>
      <title>A FORMULA FOR COMPARING ANNUAL DAMAGING ULTRAVIOLET (DUV) RADIATION DOSES AT TROPICAL AND MID-LATITUDE SITES</title>
      <link>https://trid.trb.org/View/162254</link>
      <description><![CDATA[A simple formula is developed in this paper for the relative annual damaging ultraviolet radiation (DUV) dose at different tropical and mid-latitude sites. The formula consists of six multiplicative factors which include the effects of amount of ozone, latitude, altitude, cloudiness, ground albedo, and amount of aerosols. A seasonal ozone variation factor is introduced to modify the tropical relative DUV formula for application to mid-latitude sites. The approach involves correlations of sometimes sparse data, and remains to be validated in the general sense. The formula should be useful, where more exact data are not available, in studies of the effects of solar ultraviolet radiation--and its possible increase from a reduction in stratospheric ozone--on land and marine ecological systems and skin cancer incidence in white Caucasian populations. (Author)]]></description>
      <pubDate>Mon, 30 Dec 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/162254</guid>
    </item>
    <item>
      <title>THE PERTURBATION OF SOME ATMOSPHERIC MECHANISMS BY EMISSIONS FROM AIRCRAFT</title>
      <link>https://trid.trb.org/View/162231</link>
      <description><![CDATA[The logical basis of the equations which are solved numerically in models of atmospheric structure and composition is examined, with the conclusion that even the most advanced examples must be regarded as empirical devices to be judged by results (some of which are impressive). The question of possible change of climate resulting from aircraft propulsion emissions into the high atmosphere is briefly reviewed. It is concluded that in the foreseen future, any impact of high altitude commercial flight on climate will be very small and not detectable against the background of natural fluctuations. Measurements of the water vapor content of air in the upper troposphere and lower stratosphere are reviewed. They are interpreted to indicate that significant upward movement of air through a pressure level of about 100 mb, by processes of any scale, occurs only in equatorial latitudes, but they leave uncertain the mechanism of the upward transfer. Using this hypothesis, the mass balance of the nitrogen species is calculated and differences in the results of various modeling procedures are exposed. Two phenomena peculiar to the immediate wake of the aircraft are very briefly considered - the first, the possible rapid conversion of NO to HNO3 in the hot highly concentrated exhaust, the second, formation of condensation trails. It is suggested that in neither problem can an investigation be profitably reopened at this time. (Author)]]></description>
      <pubDate>Wed, 11 Dec 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/162231</guid>
    </item>
    <item>
      <title>AIRBORNE NMHC MEASUREMENTS UNDER POLLUTION CONDITIONS.</title>
      <link>https://trid.trb.org/View/620047</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Fri, 06 Dec 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/620047</guid>
    </item>
    <item>
      <title>GLOBAL AIR QUALITY. AN IMPERATIVE FOR LONG-TERM OBSERVATIONAL STRATEGIES</title>
      <link>https://trid.trb.org/View/719695</link>
      <description><![CDATA[The National Research Council's Committee on Atmospheric Chemistry (NRC/CAC) was formed to study issues related to atmospheric chemical change and its impacts on air quality, climate, and other related issues.  The goals of this study were: to review projections of how global industrialization, urbanization, and other human activities might alter regional and global atmospheric composition; discuss how these chemical changes could affect atmospheric radiative forcing and impact U.S. air quality; describe the gaps in scientific understanding that impede ability to accurately assess such changes; identify the observational data that are most critical for detecting and documenting these chemical changes, characterize the capacity of current observational systems to collect such data, and suggest ways that these systems can be enhanced or better integrated to provide the necessary observations; and identify any research needs related to this issue.  The report provides the committee's conclusions and recommendations.]]></description>
      <pubDate>Wed, 25 Sep 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/719695</guid>
    </item>
    <item>
      <title>TABULATIONS OF AMBIENT OZONE DATA OBTAINED BY GASP AIRLINERS; MARCH 1975 TO DECEMBER 1977</title>
      <link>https://trid.trb.org/View/169015</link>
      <description><![CDATA[Tabulations are given of GASP ambient ozone mean, standard deviation, median, 84th percentile, and 98th percentile values, by season, flight level, and geographical region. In addition, selected empirical probability variations are highlighted to illustrate the types of curves which might be appropriate in specific analyses of the tabulated data, and an example-case calculation is presented to illustrate how the tables can be used to estimate the frequency of commercial airline flights encountering high cabin ozone levels. (Author)]]></description>
      <pubDate>Tue, 09 Jul 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/169015</guid>
    </item>
    <item>
      <title>STATUS OF REPRESENTATIVE TWO-DIMENSIONAL MODELS OF THE STRATOSPHERE AND TROPOSPHERE AS OF MID-1978</title>
      <link>https://trid.trb.org/View/82911</link>
      <description><![CDATA[This paper reviews ongoing efforts aimed at solution of basic problems dealing with ozone chemistry and atmospheric mass transports in representative two-dimensional (altitude and latitude) photochemical models of the troposphere and stratosphere. Emphasis is placed on the impact of recent measurements of the reaction rate coefficients for HO2 + NO yields OH + NO2 and HO2 + 03 yields OH + 2 02 on: (a) the balance between ozone production and destruction on both ozone concentrations and columns at middle northern latitudes during summer for an oxygen-hydrogen-nitrogen atmosphere; (b) calculation of NO sub x concentrations in the upper troposphere which are important for the effects of high-altitude subsonic flight on the ozone column; and (c) estimates of the tropospheric NO sub x and OH concentrations as well as the removal rates of water-soluble species in the lower troposphere from considerations of the tropospheric ozone and carbon monoxide budgets. The severe limitations of arbitrary extensions of available 2-D parameterizations of the dynamics to an upper troposphere and lower stratosphere assumed to be perturbed by large emissions of engine effluents are brought out from numerical solutions of the primitive equations for instantaneous and continuous sources of inert material in the lower stratosphere. The paper includes preliminary 2-D results based on the revised ozone chemistry for the trend of subsonic and supersonic flight effects ozone.]]></description>
      <pubDate>Sun, 30 Jun 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/82911</guid>
    </item>
    <item>
      <title>ANALYSIS OF ATMOSPHERIC OZONE LEVELS AT COMMERCIAL AIRPLANE CRUISE ALTITUDES IN WINTER AND SPRING 1976-77</title>
      <link>https://trid.trb.org/View/177104</link>
      <description><![CDATA[It has been speculated that the ozone sickness experienced by some airline passengers and crew members during the winter and spring of 1976-77 were induced by abnormally high concentrations of ambient atmospheric ozone. To investigate the possibility that 1976-77 was anomalous, ozone measurements from balloons for up to 13 years and from Global Atmospheric Sampling Program (GASP) equipped aircraft for 3 years have been studied. The analyses show that the winter and spring seasons of 1976-77 were averaged statistically, and no evidence was found to suggest that there was more than a usual variation in the frequency that commercial airplanes encountered high ambient ozone concentrations.]]></description>
      <pubDate>Sun, 28 Apr 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/177104</guid>
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