Relevant bibliographies by topics / Analyte air concentrations

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Analyte air concentrations'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Analyte air concentrations.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Analyte air concentrations"

1

Shaposhnik, Alexey, Pavel Moskalev, Elena Sizask, Stanislav Ryabtsev, and Alexey Vasiliev. "Selective Detection of Hydrogen Sulfide and Methane by a Single MOX-Sensor." Sensors 19, no. 5 (2019): 1135. http://dx.doi.org/10.3390/s19051135.

Full text
Abstract:
In this paper, we describe a technique for the qualitative and quantitative analysis of such gas mixtures as “hydrogen sulfide in air” and “methane in air” using temperature modulation of a single metal oxide sensor. Using regression analysis in the principal components plane (PC1, PC2), we performed a selective determination of analytes on the minimum set of their concentrations in the training set, which is essential for solving practical problems. An important feature of this work is the difference in test gas concentrations from their concentrations in the training set. For the qualitative
APA, Harvard, Vancouver, ISO, and other styles
2

Shahpoury, P., G. Lammel, A. Holubová Šmejkalová, J. Klánová, P. Přibylová, and M. Váňa. "Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and chlorinated pesticides in background air in central Europe – investigating parameters affecting wet scavenging of polycyclic aromatic hydrocarbons." Atmospheric Chemistry and Physics Discussions 14, no. 19 (2014): 26939–70. http://dx.doi.org/10.5194/acpd-14-26939-2014.

Full text
Abstract:
Abstract. Concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and chlorinated pesticides (CPs) were measured in air and precipitation at a background site in central Europe. Σ PAH concentrations in air and rainwater ranged from 0.7 to 327.9 ng m−3 and below analytical method detection limit (< MDL) to 2.1 × 103 ng L−1. The concentrations of PCBs and CPs in rainwater were < MDL. Σ PCB and Σ CP concentrations in air ranged from < MDL to 44.6 and < MDL to 351.7 pg m−3, respectively. The potential relationships between PAH wet scavenging and par
APA, Harvard, Vancouver, ISO, and other styles
3

Shahpoury, P., G. Lammel, A. Holubová Šmejkalová, J. Klánová, P. Přibylová, and M. Váňa. "Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and chlorinated pesticides in background air in central Europe – investigating parameters affecting wet scavenging of polycyclic aromatic hydrocarbons." Atmospheric Chemistry and Physics 15, no. 4 (2015): 1795–805. http://dx.doi.org/10.5194/acp-15-1795-2015.

Full text
Abstract:
Abstract. Concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and chlorinated pesticides (CPs) were measured in air and precipitation at a background site in central Europe. ∑ PAH concentrations in air and rainwater ranged from 0.7 to 327.9 ng m−3 and below limit of quantification (< LOQ) to 2.1 × 103 ng L−1. The concentrations of PCBs and CPs in rainwater were < LOQ. ∑ PCB and ∑ CP concentrations in air ranged from < LOQ to 44.6 and < LOQ to 351.7 pg m−3, respectively. The potential relationships between PAH wet scavenging and particulate m
APA, Harvard, Vancouver, ISO, and other styles
4

Feriduni, Behruz, Mohammad Barzegar, Shahram Sadeghvand, Shadi Shiva, Maryam Khoubnasabjafari, and Abolghasem Jouyban. "Determination of valproic acid and 3-heptanone in plasma using air-assisted liquid-liquid microextraction with the assistance of vortex: Application in the real samples." BioImpacts 9, no. 2 (2019): 105–13. http://dx.doi.org/10.15171/bi.2019.14.

Full text
Abstract:
Introduction: Valproic acid (VPA) is an antiepileptic drug used to treat epilepsy and bipolar disorder. Adverse effects of VPA were studied in many reports, however, a dose-response relationship between VPA and its metabolites in epilepsy patients are extremely limited. In this paper, a high efficient method was developed for the preconcentration and determination of VPA and its main metabolite in plasma. Methods: For the extraction and preconcentration of the selected analytes, a volume of an extractant was placed at the bottom of the microtube containing pretreated plasma. The mixture was re
APA, Harvard, Vancouver, ISO, and other styles
5

Iyer, Abhijeet, Veselinka Mitevska, Jonathan Samuelson, Scott Campbell, and Venkat R. Bhethanabotla. "Polymer–Plasticizer Coatings for BTEX Detection Using Quartz Crystal Microbalance." Sensors 21, no. 16 (2021): 5667. http://dx.doi.org/10.3390/s21165667.

Full text
Abstract:
Sensing films based on polymer–plasticizer coatings have been developed to detect volatile organic compounds (VOCs) in the atmosphere at low concentrations (ppm) using quartz crystal microbalances (QCMs). Of particular interest in this work are the VOCs benzene, ethylbenzene, and toluene which, along with xylene, are collectively referred to as BTEX. The combinations of four glassy polymers with five plasticizers were studied as prospective sensor films for this application, with PEMA-DINCH (5%) and PEMA-DIOA (5%) demonstrating optimal performance. This work shows how the sensitivity and selec
APA, Harvard, Vancouver, ISO, and other styles
6

Brown, Richard J. C., Daniel Hood, and Andrew S. Brown. "On the Optimum Sampling Time for the Measurement of Pollutants in Ambient Air." Journal of Automated Methods and Management in Chemistry 2008 (2008): 1–6. http://dx.doi.org/10.1155/2008/814715.

Full text
Abstract:
No measurement result of any kind is complete without an associated statement of uncertainty. In general, the aim is to minimise this measurement uncertainty to the extent that the measurement made is fit for purpose, or the uncertainty meets an acceptable level such as a ‘‘data quality objective’’. This paper demonstrates how the sampling time used to measure a pollutant in ambient air over a given time period, particularly with automatic instruments, can affect the uncertainty of the measurement result. It is shown that the uncertainty of the overall result depends critically on how the prec
APA, Harvard, Vancouver, ISO, and other styles
7

Bouche, Marie-Paule L. A., Jan F. P. Van Bocxlaer, Georges Rolly, et al. "Quantitative Determination of Vapor-Phase Compound A in Sevoflurane Anesthesia Using Gas Chromatography–Mass Spectrometry." Clinical Chemistry 47, no. 2 (2001): 281–91. http://dx.doi.org/10.1093/clinchem/47.2.281.

Full text
Abstract:
Abstract Background: During low-flow or closed-circuit anesthesia with the fluorinated inhalation anesthetic sevoflurane, compound A, an olefinic degradation product with known nephrotoxicity in rats, is generated on contact with alkaline CO2 adsorbents. To evaluate compound A formation and thus potential sevoflurane toxicity, a reliable and reproducible assay for quantitative vapor-phase compound A determination was developed. Methods: Compound A concentrations were measured by fully automated capillary gas chromatography–mass spectrometry with cryofocusing. Calibrators of compound A in the v
APA, Harvard, Vancouver, ISO, and other styles
8

Huang, Shuquan, Jessica Connolly, Andrei Khlystov, and Richard B. Fair. "Digital Microfluidics for the Detection of Selected Inorganic Ions in Aerosols." Sensors 20, no. 5 (2020): 1281. http://dx.doi.org/10.3390/s20051281.

Full text
Abstract:
A prototype aerosol detection system is presented that is designed to accurately and quickly measure the concentration of selected inorganic ions in the atmosphere. The aerosol detection system combines digital microfluidics technology, aerosol impaction and chemical detection integrated on the same chip. Target compounds are the major inorganic aerosol constituents: sulfate, nitrate and ammonium. The digital microfluidic system consists of top and bottom plates that sandwich a fluid layer. Nozzles for an inertial impactor are built into the top plate according to known, scaling principles. Th
APA, Harvard, Vancouver, ISO, and other styles
9

Kirchgeorg, Torben, Ingo Weinberg, Annekatrin Dreyer, and Ralf Ebinghaus. "Perfluorinated compounds in marine surface waters: data from the Baltic Sea and methodological challenges for future studies." Environmental Chemistry 7, no. 5 (2010): 429. http://dx.doi.org/10.1071/en10039.

Full text
Abstract:
Environmental context.Perfluorinated compounds are man-made chemicals of emerging environmental concern because of their global distribution in water, air and biota. We investigate the distribution of these chemicals in surface water of the Baltic Sea, a unique ecosystem and the world’s largest body of brackish water. The observed contamination was of the same order of magnitude as classical persistent organic pollutants in the world’s oceans, and decreased with lower population density in the Baltic Sea catchments. Abstract.Poly- and perfluorinated compounds (PFCs) are chemicals of emerging e
APA, Harvard, Vancouver, ISO, and other styles
10

Hawker, Charles D., William L. Roberts, Antonio DaSilva, et al. "Development and Validation of an Automated Thawing and Mixing Workcell." Clinical Chemistry 53, no. 12 (2007): 2209–11. http://dx.doi.org/10.1373/clinchem.2007.094185.

Full text
Abstract:
Abstract Background: Working toward a goal of total laboratory automation, we are automating manual activities in our highest volume laboratory section. Because half of all specimens arriving in this laboratory section are frozen, we began by developing an automated workcell for thawing frozen specimens and mixing the thawed specimens to remove concentration gradients resulting from freezing and thawing. Methods: We developed an initial robotic workcell that removed specimens from the transport system’s conveyor, blew high-velocity room temperature air at the tubes, mixed them, and replaced th
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Analyte air concentrations"

1

Petrich, Nicholas Thomas. "Simulating and explaining passive air sampling rates and analyte air concentrations for semi-volatile compounds on polyurethane foam disks." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/3513.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Roche, Agnès. "Mise au point et étude d'échantillonneurs diffusifs pour le suivi de l'exposition personnelle aux concentrations atmosphériques de benzène, toluène, éthylbenzène et xylènes BTEX et d'aldéhydes." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10018.

Full text
Abstract:
Le principe des echantillonneurs diffusifs repose sur la diffusion des composes organiques volatils, regie par la premiere loi de fick, jusqu'a un adsorbant sur lequel ils sont pieges. Ces appareils sont de plus en plus utilises pour controler les atmospheres de travail, mais on connait tres peu leurs capacites en milieu peu pollue. Il s'agit donc d'une etude menee sur des echantillonneurs de type tube pour les btex en les testant et en les etalonnant a tres basses concentrations (ppbv) dans des chambres de simulation, dans differentes conditions (humidite, agitation atmospherique), et si beso
APA, Harvard, Vancouver, ISO, and other styles
3

Cachier-Rivault, Hélène. "Approche isotopique du cycle atmospherique du carbone particulaire." Paris 7, 1987. http://www.theses.fr/1987PA077061.

Full text
Abstract:
Etude des emissions naturelles de carbone particulaire et evaluation des perturbations induites par les activites humaines sur le cycle atmospherique du carbone. Travail s'appuyant sur des mesures de concentration et de granulometrie d'aerosol preleve au cours de nombreuses campagnes en milieu continental tempere et tropical ainsi qu'en zone oceanique des deux hemispheres. L'origine et le transport a grande echelle des aerosols sont determines par des mesures de composition isotopique (**(13)c/**(12)c) au spectrometre de masse
APA, Harvard, Vancouver, ISO, and other styles
4

Liang, Shu-Ting, and 梁淑婷. "Concentration-rose and risk-rose for ambient air quality data and directional pollution impact analyses." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/97221903946025173863.

Full text
Abstract:
碩士<br>國立交通大學<br>環境工程所<br>89<br>In analyzing the data collected from ambient monitoring stations and environmental impact of a newly established pollution source, directional effects are generally analyzed based on the major direction(s) observed from a wind-rose. However, pollution dispersion phenomena, critical events, and emission sources may not occur in the major direction(s). Furthermore, the Calm portion indicated in a wind-rose is easily ignored, but, for a Calm condition, there exists a high possibility for deteriorating quality or a critical event to occur because its poor dispersiv
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Analyte air concentrations"

1

E, Hinkle Margaret, and Geological Survey (U.S.), eds. Analytical results for monitored soil-gas concentrations (1991-1992) and for analyses of soil samples collected at the Kokomo Mine, Central City, Colorado. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Analytical results for monitored soil-gas concentrations (1991-1992) and for analyses of soil samples collected at the Kokomo Mine, Central City, Colorado. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hanappi-Egger, Edeltraud, and Renate Ortlieb. The Intersectionalities of Age, Ethnicity, and Class in Organizations. Edited by Regine Bendl, Inge Bleijenbergh, Elina Henttonen, and Albert J. Mills. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199679805.013.20.

Full text
Abstract:
The aim of this chapter is to give an overview of the academic debate on age, ethnicity, and class, in particular their intersectionalities within organizations. Although the social categories of age and ethnicity are well studied by diversity scholars, literature on the combined effects of these dimensions for individuals and organizations is still scarce. This holds even more for the category of class. While there exist scattered analyses of class-related issues within the field of diversity studies, up to now there is no analysis that considers the interplay of class with both age and ethni
APA, Harvard, Vancouver, ISO, and other styles
4

Zepke, Stephen. Sublime Art. Edinburgh University Press, 2017. http://dx.doi.org/10.3366/edinburgh/9780748669998.001.0001.

Full text
Abstract:
The book analyses recent philosophical discussions of Kant’s theory of the sublime, and the artistic examples these give or provoke, in order to construct a diagram of sublime contemporary art. This diagram will have the immediate aim of producing a new genealogy of post-war art that avoids the modern/postmodern rupture, in favour of a sublime art that can utilise both traditional and new media and has the production of the future as its political goal. The book will draw on both philosophical discourse and art history and theory in making its argument. The introduction will give an account of
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Analyte air concentrations"

1

Al-Obed, Meshari, Sief Uddin, and Ashraf Ramadhan. "Dust Storm Satellite Images." In Atlas of Fallen Dust in Kuwait. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66977-5_1.

Full text
Abstract:
Abstract DATA of Aerosol Robotic Network (Aeronet) stations and Ozone Monitoring Instrument (OMI) were obtained to get valuable and reliable information about the occurrence of dust events. In addition to Total Ozone Mapping Spectrometer (TOMS) provide informative and long dust events record. To analyze the dust time series, monthly, annual and seasonal linear trends are applied to the dust time series. This is achieved by summing the total number of dusty hours for each month and then the total number of dusty days for the month is calculated. Dust trend analysis includes; annual, winter, spring, summer and autumn with the rate of change. Dust frequency of seasons in days/season before and after sorting in a descending manner from 1984 to 2013. Satelliteimagesuse for PM2.5 Estimation and concentrations Remote sensing-based measurements Calibration of Field and Laboratory Equipment. Particle concentrations in different size ranges and the total suspended particulate matter in the air in Kuwait. Dust deposition rates were monitored and analyzed in Kuwait at the northern ArabianGulf to estimate quantities of fallen dust within major eight dust trajectories in the ArabianGulf. Kuwait is surrounded by five major sources of dust rather than intermediate dust source areas that are listed. Satelliteimages from 2000 to 2010 were used to identify major dust trajectories within seven major deserts in the world.
APA, Harvard, Vancouver, ISO, and other styles
2

Bharath Karuppasamy, Manikanda, Srinivasalu Seshachalam, Usha Natesan, and Karthik Ramasamy. "Characterization of Atmospheric Mercury in the High-Altitude Background Station and Coastal Urban City in South Asia." In Air Quality [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94543.

Full text
Abstract:
This study is performed to evaluate the potential sources and seasonal variation of atmospheric mercury (Hg) emissions from regional sources and other influences in India. To achieve this, using the gold amalgam technique with an automated continuous mercury vapour analyzer (TekranTM 2537B). To assess the total gaseous mercury in high altitude mountain peak station at Kodaikanal &amp; coastal/urban air in Chennai region, the impact of changing weather conditions is also evaluated. To compare the past and recent reports of mercury at different locations in the world. The average total gaseous mercury value in Chennai is 4.68 ng/m3, which is higher as compared to Kodaikanal, where it is 1.53 ng/m3. The association between TGM with meteorological parameters in ambient air such as temperature, relative humidity, rainfall intensity, the direction of wind and velocity of was studied. The TGM concentration in India are compared with other nations, the TGM levels are similar to the east and Southeast Asian countries, and also Europe, Sub-Saharan Africa and North America are the averages and maximum concentration generally smaller. This research will help to establish more effective management approaches to mitigate the impacts of atmospheric mercury on the rural and urban environment.
APA, Harvard, Vancouver, ISO, and other styles
3

Kruszewski, Łukasz. "Fossil Fuel Fires: A Forgotten Factor of Air Quality." In Environmental Sustainability - Preparing for Tomorrow. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96294.

Full text
Abstract:
Spontaneous fossil fuel fires, especially coal fires, are known worldwide. They occur in numerous sites, both completely natural (coal seam outcrops) and anthropogenic (burning mining waste heaps, or BMWHs). Coal and waste/barren rock fires produce gaseous emanations, acting within exhalative processes. This factor is rarely being considered as influencing quality of the atmospheric air. The paper shortly discusses most important available methods for field gas analysis, with an emphasis on a portable FTIR spectrometer. It summarizes results of gas analyses from Polish BMWHs, using a multi-tool approach. It also lists a number of additional analyses from 53 vents of these environmentally important objects, with the main purpose of enlarging the knowledge of the span of concentrations of the particular compounds. This is especially true for formaldehyde, pyridine, CO, 1,1,1-trichloroethene, 1,1-dichloroethene, cumene, SO2, and, to a lesser extent, NO2, CCl4, ethane, propane, ethene, and thiophene. The latter, and DMS, are confirmed as gaseous S source more frequent and rich than SO2.
APA, Harvard, Vancouver, ISO, and other styles
4

Emmanuel, Alexandra, and Evens Emmanuel. "Chemical Pollution of Drinking Water in Haiti: An Important Threat to Public Health." In Environmental Health [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97766.

Full text
Abstract:
The geophysical environment of the Republic of Haiti is characterized by hydrological and biogeographical climatic phenomena, and a relief marked by its rugged appearance. Most of the territory is occupied by mountains formed of limestone. The differences in level are very marked. Fragmentation is another feature of the relief. These environmental imperfections juxtaposed with difficult socioeconomic conditions and anthropogenic actions raise questions about possible chemical metal pollution of the country’s water resources. Indeed, the predominance of limestone in the Haitian geology generate water hardness, and in the case where the magnesium concentration is less than 7 mg/l, this water may be the source of cardiovascular diseases. Studies carried out on several water points show a total hardness greater than 200 mg/l. In Port-au-Prince, concentrations of lead ranging from 40 μg/L to 90 μg/L and high Cr (III) risks were measured and estimated in groundwater and drinking water. Concentration of fluorine ranging from 0 to 2 mg/l were obtained from water resources. Concentration above 1.5 mg/l have been found from alluvial aquifers. Chronic public health risks, such as cardiovascular diseases, deterioration of the psychological development of children, irreversible functional and morphological renal changes, and dental fluorosis, strain Haiti’s water resources. Chemicals’ exposures seem to pose a threat to public health in Haiti, which need to be studied. The aim of this study is: (i) to analyze the contribution of geology and anthropogenic actions in the alteration of water quality, (ii) to review the toxicology of chemicals detected in water distributed in Port-au-Prince.
APA, Harvard, Vancouver, ISO, and other styles
5

"Occupational Toxicology." In Environmental Toxicology, edited by Sigmund F. Zakrzewski. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195148114.003.0013.

Full text
Abstract:
Industrial workers make up the segment of the population that is most vulnerable to chemical injury. To protect them from occupation-related harm, the American Conference of Governmental and Industrial Hygienists publishes annually revised threshold limit values (TLVs) (1), guidelines for permissible chemical exposure at the work place. TLV refers to concentrations of substances in parts per million or milligrams per cubic meter in the air to which most workers can be exposed on a daily basis without harm. These values apply to the work place only. They are not intended as guidelines for ambient air quality standards for the population at large. Obviously, genetic variations and diverse lifestyles (such as smoking, alcohol use, medication, and drug use) must be considered. Hypersensitive individuals may be adversely affected by exposure to certain chemicals even within the limits of the TLV. Thus, TLVs should be treated as guidelines only and not as fixed standards. The recommended goal is to minimize chemical exposure in the work place as much as possible. TLVs are expressed in three ways: 1. Time-weighted average (TLV–TWA) designates the average concentration of a chemical to which workers may safely be exposed for 8 h per day and 5 days per week. 2. Short-term exposure limit (TLV–STEL) designates permissible exposure for no more than 15 min, and no more than four times per day, with at least 60-min intervals between exposures. 3. Ceiling concentrations (TLV–C) are concentrations that should not be exceeded at any time. How protective the TLVs are is being questioned. The 1990 report that analyzed the scientific underpinnings of the TLVs revealed that at the exposure at or below the TLV, only few cases showed no adverse effect (2). In some cases even 100% of those exposed were affected. On the other hand, there was a good correlation between the TLVs and the measured exposure occurring in the work place. Thus, it appears that the TLVs represent levels of contaminants that may be encountered in the work place, rather than protective thresholds. Biological exposure indices (BEIs) provide another way of looking at exposure to chemicals.
APA, Harvard, Vancouver, ISO, and other styles
6

Cleary, Ekaterina Galkina, Manuel Cifuentes, Georges Grinstein, Doug Brugge, and Thomas B. Shea. "Association of Low-Level Ozone with Cognitive Decline in Older Adults." In Advances in Alzheimer’s Disease. IOS Press, 2021. http://dx.doi.org/10.3233/aiad210033.

Full text
Abstract:
Increasing evidence points to an association of airborne pollutant exposure with respiratory, cardiovascular, and neurological pathology. We examined whether or not ground-level ozone or fine particulate matter ≤ 2.5 μm in diameter (PM2.5) was associated with accelerated cognitive decline. Using repeated measures mixed regression modeling, we analyzed cognitive performance of a geographically diverse sampling of individuals from the National Alzheimer’s Coordinating Center between 2004–2008. Ambient air concentrations of ozone and PM2.5 were established using a space-time Hierarchical Bayesian Model that statistically merged air monitor data and modeled air quality estimates. We then compared the ambient regional concentrations of ozone and PM2.5 with the rate of cognitive decline in residents within those regions. Increased levels of ozone correlated with an increased rate of cognitive decline, following adjustment for key individual and community-level risk factors. Furthermore, individuals harboring one or more APOE4 alleles exhibited a faster rate of cognitive decline. The deleterious association of ozone was confined to individuals with normal cognition who eventually became cognitively impaired as opposed to those who entered the study with baseline impairment. In contrast to ozone, we did not observe any correlation between ambient PM2.5 and cognitive decline at regulatory limits set by the Environmental Protection Agency. Our findings suggest that prolonged exposure to ground-level ozone may accelerate cognitive decline during the initial stages of dementia development.
APA, Harvard, Vancouver, ISO, and other styles
7

Toro, María Victoria. "Evolutionary Lagrangian Inverse Modeling for PM10 Pollutant Dispersion." In Soft Computing Methods for Practical Environment Solutions. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-893-7.ch018.

Full text
Abstract:
One of the main concerns when it comes to mitigating the effects of the concentration of the particulate matter PMx in an area of study is the fact to determine its behavior over time, overcoming both physical and mathematical limitations in terms of a phenomenon of dispersion. Therefore, this chapter develops and analyzes a model based on the principles of evolutionary computation (EC) in order to determine the space-time behavior of the concentration of the particulate matter PMx in a study area. The proposed model has three submodels within an integrated solution, which constitute the individual to evolve. The transformation of the possible solutions or generational population is made by using an asynchronous evolutionary model, due to genetic dependency between substructures. The proposed model was validated for configurations of n sources of emissions and m monitoring stations that measure the quality of the air in a study area.
APA, Harvard, Vancouver, ISO, and other styles
8

Wood, William. "Analytic Theology as a Spiritual Practice." In Analytic Theology and the Academic Study of Religion. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198779872.003.0010.

Full text
Abstract:
Part III calls for a more theological analytic theology and defends analytic theology from some common theological objections. Many theologians reject analytic theology because they find it too abstract and spiritually sterile to count as genuine theology. In contrast, I argue that analytic theology may be understood as a spiritual practice. Intellectual practices are also spiritual exercises when they (1) aim at self-improvement or liberation, instead of simply the acquisition of knowledge; (2) discipline the passions, since unchecked passions and immoderate desires are the enemy of both the spiritual life and the life of the mind; (3) help us see the world as it really is, rather than as we imagine or wish it to be; and (4) help us cultivate specific virtues that are at once intellectual and moral, like attention or concentration. It is in these senses that analytic theology can be understood as a spiritual practice. Analytic theology is an authentic development of a tradition of Christian philosophical theology, which includes Anselm and Aquinas as members, and which treats theology as both theoretical and practical at once.
APA, Harvard, Vancouver, ISO, and other styles
9

Wang, Xiaoying, Mingqiang Ma, Xueliang Wang, and Shoujuan Wang. "Surface Plasmon Resonance Sensors for Concentration and Reaction Kinetic Detections." In Analytical Chemistry - Advancement, Perspectives and Applications [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92549.

Full text
Abstract:
Surface plasmon resonance (SPR) is an optical phenomenon that occurs on the metal (normally gold or silver) film surface and the light that excited this phenomenon changes with the refractive index of materials on the metal surface. SPR sensors are constructed based on this phenomenon and are used in fields of biological and chemical analyses, drug screening, environmental monitoring, and so on. Here, we will make an introduction to applications of SPR sensors on reaction kinetic and concentration detections. To make this chapter readily comprehensible, we will divide it into three portions. The first part will be an abbreviated depiction of surface plasmon excitation and constructions of an SPR sensor. Then, we will aim at an introduction to the bimolecular interactions in SPR sensors. At last, we will make a summary on applications of SPR sensors.
APA, Harvard, Vancouver, ISO, and other styles
10

Fu, Pengfei, and Ken Kin Lam Yung. "Air Pollution and Alzheimer’s Disease: A Systematic Review and Meta-Analysis." In Advances in Alzheimer’s Disease. IOS Press, 2021. http://dx.doi.org/10.3233/aiad210016.

Full text
Abstract:
Background: Ambient air pollution has been associated with Alzheimer’s disease (AD) in the elderly. However, its effects on AD have not been meta-analyzed comprehensively. Objective: We conducted a systematic review and meta-analysis to assess the associations between air pollution and AD incidence. Methods: We searched PubMed and Web of Science for indexed publications up to March 2020. Odds risk (OR) and confidence intervals (CI) were estimated for particulate matter (PM)10 (PM10), PM2.5, ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO). The subgroup analysis was conducted based on the pollution levels. Results: Nine studies were included in the meta-analysis and review. The OR per 10 μg/m3 increase of PM2.5 was 1.95 (95% CI: 0.88–4.30). The corresponding values per 10 μg/m3 increment of other pollutants were 1.03 (95% CI: 0.68–1.57) for O3, 1.00 (95% CI: 0.89–1.13) for NO2, and 0.95 (95% CI: 0.91–0.99) for PM10 (only one study), respectively. Overall OR of the five air pollutants above with AD was 1.32 (95% CI: 1.09–1.61), suggesting a positive association between ambient air pollution and AD incidence. The sub-analysis indicated that the OR (2.20) in heavily polluted regions was notably higher than that in lightly polluted regions (1.06). Although AD risk rate data related to SO2 or CO exposure are still limited, the epidemiologic and toxicological evidence indicated that higher concentration of SO2 or CO exposure increased risks of dementia, implying that SO2 or CO might have a potential impact on AD. Conclusion: Air pollution exposure may exacerbate AD development.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Analyte air concentrations"

1

Jambhulkar, Sayli, Weiheng Xu, Yuxiang Zhu, Dharneedar Ravichandran, and Kenan Song. "Microscale 3D Printed Patterns for Nanoscale Particle Assembly." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-63902.

Full text
Abstract:
Abstract Directed particle assembly has broad applications in sensors, actuators, microelectronics, robotics, and the biomedical area. Currently available methods include external fields such as electrical or magnetic fields, surface treatment on substrates, and DNA-assisted templates. However, these methods are most efficient at the nanoscale and would lose their efficiency and scalability above microscales. We reported in this research the uses of the 3D printed surface to direct the assembly of nanoparticles. We used carbon nanofibers (CNFs) as an example to show the long-range orders after
APA, Harvard, Vancouver, ISO, and other styles
2

Diaz, Gerardo C., Roland Winston, Alexander Ritschel, Sergio Pineda, and Pablo Benitez. "Analysis of Natural Convection Coupled With Thermal Radiation in Novel High-Concentration Nonimaging-Optics-Based System for Multi-Junction Solar Cells." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14178.

Full text
Abstract:
The design of solar concentrators based on nonimaging optics provides an inexpensive, but highly powerful concentrating system with large angular tolerance and uniform cell illumination. However, multi-junction tandem-cell-based concentrators require high levels of concentration to become cost effective. The two-mirror design is capable of working at an average concentration over 800 suns with local concentrations below 2000 suns without a homogenizing kaleidoscope. With this level of concentration it is essential to analyze the thermal effects of the unit at different operating conditions. In
APA, Harvard, Vancouver, ISO, and other styles
3

Durbaca, Ion, Nicoleta Sporea, Dana-Claudia Farcas-Flamaropol, and Elena Surdu. "Application of the "SIX SIGMA" method for the analysis of the improvement of the environmental air quality parameters at the municipality of Bucharest, by monitoring the pollutances of NOX pollutants." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.iii.5.

Full text
Abstract:
This paper analyzes the improvement of ambient air quality indicators by monitoring the NOx concentration in one of the most polluted areas of Bucharest, using the statistical method "SIX SIGMA" (6σ). By applying the methodology of this statistical approach, the aim is to reduce non-conformities within the specified limits (according to the standards and legislative norms in force) and respectively, to ensure maximum efficiency (99,99%), equivalent to a yield of 3.4 defects per million opportunities (DPMO). As high concentrations of air pollutants have a major impact on human health, the most
APA, Harvard, Vancouver, ISO, and other styles
4

Kostka, Pal, Zsolt Techy, and James J. Sienicki. "Hydrogen Mixing Analyses for a VVER Containment." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22206.

Full text
Abstract:
Hydrogen combustion may represent a threat to containment integrity in a VVER-440/213 plant owing to the combination of high pressure and high temperature. A study has been carried out using the GASFLOW 2.1 three-dimensional CFD code to evaluate the hydrogen distribution in the containment during a beyond design basis accident. The VVER-440/213 containment input model consists of two 3D blocks connected via one-dimensional (1D) ducts. One 3D block contains the reactor building and the accident localization tower with the suppression pools. Another 3D block models the air traps. 1D ducts repres
APA, Harvard, Vancouver, ISO, and other styles
5

Mehdi, Ghazanfar, Maria Grazia De Giorgi, Donato Fontanarosa, Sara Bonuso, and Antonio Ficarella. "Ozone Production With Plasma Discharge: Comparisons Between Activated Air and Activated Fuel/Air Mixture." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-60167.

Full text
Abstract:
Abstract This study focused on the comparative analysis about the production of ozone and active radicals in presence of nanopulsed plasma discharge on air and on fuel/air mixture to investigate its effect on combustion enhancement. This analysis is based on numerical modeling of air and methane/air plasma discharge with different repetition rates (100 Hz, 1000 Hz and 10000 Hz). To this purpose, a two-step approach has been proposed based on two different chemistry solvers: a 0-D plasma chemistry solver (ZDPlasKin toolbox) and a combustion chemistry solver (CHEMKIN software suite). Consequentl
APA, Harvard, Vancouver, ISO, and other styles
6

Mahdavi, Marzieh, Soroor Karimi, Siamack A. Shirazi, and Brenton S. McLaury. "Parametric Study of Erosion Under High Concentrated Slurry: Experimental and Numerical Analyses." In ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fedsm2016-7718.

Full text
Abstract:
Highly concentrated slurries are found in many different industrial and environmental applications, such as hydro-transport systems of the oil sands industry, drilling and fracturing applications, and stirring vessels. When the volume fraction of particles is low, particles have little influence on the structure of the flow. However, even when average concentration is relatively low, there can still be some regions of high concentration. In highly concentrated flows, the effect of particles on the dynamics of the flow cannot be neglected. Under this condition, particle concentration can affect
APA, Harvard, Vancouver, ISO, and other styles
7

Ochi, Takeshi, Norio Arai, Tomohiko Furuhata, and Naoki Kishi. "Effect of H2 Addition on Soot Formation in Fuel-Rich CH4/Air Turbulent Diffusion Flames." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26067.

Full text
Abstract:
In this study, the difference of temperature and the component of chemical species on soot formation in CH4/air fuel-rich diffusion flames were investigated. Furthermore, for decreasing soot formation in fuel-rich diffusion flames, we added H2 in CH4, investigated the property of combustion, and compared with methane/air fuel-rich flames. We have paid much attention to the influence of the equivalence ratio of methane (+H2)/air, the swirl strength of combustion air and the concentration of C2H2 on the soot formation. The experimental combustor for CH4(+H2)/air combustion was designed, and the
APA, Harvard, Vancouver, ISO, and other styles
8

Santhosh, Unni, Jalees Ahmad, Robert Miller, Greg Ojard, Yasser Gowayed, and Reji John. "An Approach for Mechanistic Modeling of Ceramic Matrix Composites." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90795.

Full text
Abstract:
A mechanistic modeling approach for material characterization and for life prediction of CMC components is described. The approach includes consideration of environment-induced degradation of CMC properties, progressive microcracking of the matrix material and interfacial damage. The mechanistic model has been embedded in a finite element analysis (FEA) framework to enable structural analyses of components and to analyze macro damage, such as cracks and delaminations. This paper describes the modeling approach and its application in the study of substructures. Examples include analyses of simp
APA, Harvard, Vancouver, ISO, and other styles
9

Kawano, Takanobu, Hideaki Itakura, Naoya Kato, Akinori Osanai, and Takuji Matsubara. "A Measuring Technology to Analyze HC Concentration in the Air Intake System while the Engine is in Operation." In SAE 2004 World Congress & Exhibition. SAE International, 2004. http://dx.doi.org/10.4271/2004-01-0142.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zhao, Changsui, Wenxuan Wang, Fengjun Wang, Chuanmin Chen, and Song Han. "Emission Control of Gaseous Pollutants From Co-Firing of Petroleum Coke and Coal in CFB." In 17th International Conference on Fluidized Bed Combustion. ASMEDC, 2003. http://dx.doi.org/10.1115/fbc2003-103.

Full text
Abstract:
Petroleum cokes including delayed coke, fluid coke, etc. are byproducts of solid residuals from the crude refining process. Using high sulfur petroleum coke as alternative fuel is feasible owing to its high fixed carbon and low ash content, but petroleum cokes are difficult to ignite due to their low volatile content and containing substantial concentrations of vanadium, nickel, nitrogen and sulfur, which can be sources of pollution emission and fireside fouling or corrosion problem. Co-firing petroleum coke and coal in circulating fluidized bed (CFB) is an ideal solution for those problems. E
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Analyte air concentrations"

1

Komppula, Birgitta, Tomi Karppinen, Henrik Virta, et al. Air quality in Finland according to air quality measurements and satellite observations. Finnish Meteorological Institute, 2021. http://dx.doi.org/10.35614/isbn.9789523361409.

Full text
Abstract:
In this report the current air quality in Finland has been assessed with air quality measurement data and satellite observations. The assessment of ambient air concentrations included following air impurities: NO2, NOx, PM10, PM2,5, SO2, CO, O3, benzo(a)pyrene, benzene, Pb, As, Cd ja Ni. For these pollutants air quality assessment thresholds are given in air quality legislation (2008/50/EY, 2004/107/EY). Assessment has been performed for air quality zones. The main data set included air quality measurements performed in Finland during 2015–2019. Satellite observations were used as an objective
APA, Harvard, Vancouver, ISO, and other styles
2

Kwon, Jaymin, Yushin Ahn, and Steve Chung. Spatio-Temporal Analysis of the Roadside Transportation Related Air Quality (STARTRAQ) and Neighborhood Characterization. Mineta Transportation Institute, 2021. http://dx.doi.org/10.31979/mti.2021.2010.

Full text
Abstract:
To promote active transportation modes (such as bike ride and walking), and to create safer communities for easier access to transit, it is essential to provide consolidated data-driven transportation information to the public. The relevant and timely information from data facilitates the improvement of decision-making processes for the establishment of public policy and urban planning for sustainable growth, and for promoting public health in the region. For the characterization of the spatial variation of transportation-emitted air pollution in the Fresno/Clovis neighborhood in California, v
APA, Harvard, Vancouver, ISO, and other styles
3

Hutchinson, M. L., J. E. L. Corry, and R. H. Madden. A review of the impact of food processing on antimicrobial-resistant bacteria in secondary processed meats and meat products. Food Standards Agency, 2020. http://dx.doi.org/10.46756/sci.fsa.bxn990.

Full text
Abstract:
For meat and meat products, secondary processes are those that relate to the downstream of the primary chilling of carcasses. Secondary processes include maturation chilling, deboning, portioning, mincing and other operations such as thermal processing (cooking) that create fresh meat, meat preparations and ready-to-eat meat products. This review systematically identified and summarised information relating to antimicrobial resistance (AMR) during the manufacture of secondary processed meatand meat products (SPMMP). Systematic searching of eight literature databases was undertaken and the resu
APA, Harvard, Vancouver, ISO, and other styles
4

Kyllönen, Katriina, Karri Saarnio, Ulla Makkonen, and Heidi Hellén. Verification of the validity of air quality measurements related to the Directive 2004/107/EC in 2019-2020 (DIRME2019). Finnish Meteorological Institute, 2020. http://dx.doi.org/10.35614/isbn.9789523361256.

Full text
Abstract:
This project summarizes the results from 2000–2020and evaluates the trueness andthequality control (QC) procedures of the ongoing polycyclic aromatic hydrocarbon (PAH)and trace element measurements in Finlandrelating to Air Quality (AQ) Directive 2004/107/EC. The evaluation was focused on benzo(a)pyrene and other PAH compounds as well as arsenic, cadmium and nickel in PM10and deposition. Additionally, it included lead and other metals in PM10and deposition, gaseous mercury and mercury deposition, andbriefly other specificAQ measurements such as volatile organic compounds (VOC)and PM2.5chemical
APA, Harvard, Vancouver, ISO, and other styles
5

Riveros, Guillermo, Felipe Acosta, Reena Patel, and Wayne Hodo. Computational mechanics of the paddlefish rostrum. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41860.

Full text
Abstract:
Purpose – The rostrum of a paddlefish provides hydrodynamic stability during feeding process in addition to detect the food using receptors that are randomly distributed in the rostrum. The exterior tissue of the rostrum covers the cartilage that surrounds the bones forming interlocking star shaped bones. Design/methodology/approach – The aim of this work is to assess the mechanical behavior of four finite element models varying the type of formulation as follows: linear-reduced integration, linear-full integration, quadratic-reduced integration and quadratic-full integration. Also presented i
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Analyte air concentrations' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography