19. Case Study of High Levels of Carbon Monoxide in Homes in a Rural County in IOWA

1999 ◽  
Author(s):  
S.J. Reynolds
Keyword(s):  
Carbon Monoxide ◽  
Rural County

scholarly journals Sensorineural Hearing Loss following Carbon Monoxide Poisoning

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Joseph P. Pillion
Keyword(s):  
Carbon Monoxide ◽  
Hearing Loss ◽  
Brain Injury ◽  
Word Recognition ◽  
Sensorineural Hearing Loss ◽  
Recognition Performance ◽  
Carbon Monoxide Poisoning ◽  
Sensorineural Hearing ◽  
Severe Degree

A case study is presented of a 17-year-old male who sustained an anoxic brain injury and sensorineural hearing loss secondary to carbon monoxide poisoning. Audiological data is presented showing a slightly asymmetrical hearing loss of sensorineural origin and mild-to-severe degree for both ears. Word recognition performance was fair to poor bilaterally for speech presented at normal conversational levels in quiet. Management considerations of the hearing loss are discussed.

Acute toxicity when concentration varies with time: A case study with carbon monoxide inhalation by rats

2016 ◽  
Vol 80 ◽  
pp. 102-115 ◽  
Author(s):  
Lisa M. Sweeney ◽  
Douglas R. Sommerville ◽  
Michelle R. Goodwin ◽  
R. Arden James ◽  
Stephen R. Channel
Keyword(s):  
Carbon Monoxide ◽  
Acute Toxicity

An Innovative Sustainability-Oriented Eco-Development Approach in China: The Case Study of Chongming Island

2014 ◽  
Vol 535 ◽  
pp. 552-555
Author(s):  
Ru Guo
Keyword(s):  
Developing Countries ◽  
Natural Resources ◽  
Rapid Development ◽  
Ecological Modernization ◽  
Rural County ◽  
Material Wealth ◽  
Chongming Island ◽  
Development Approach ◽  
Developing Area

The rapid development of Chinas economy has not only created enormous material wealth, but also brought about great challenges to natural resources and environment. Therefore, there is a pressing need of transition from traditional development pathways to a sustainable one for China. Taking Chongming Island as a case, an innovative sustainability-oriented eco-development approach is presented. Chongming Island has a unique setting as a rural county in the highly urbanized municipality, with a good eco-environment and least developed economy in the surroundings. Through exploring a path to ecological modernization beyond the traditional industrialization, Chongming practice is expected to show the way of how to integrate ecosystem management and eco-development in a developing area, which is a good demonstration for China and other developing countries and regions.

scholarly journals Air pollution as the cause of urban stress. A case study: Nemanjica Boulevard, Nis, Serbia

2010 ◽  
Vol 8 (4) ◽  
pp. 403-412
Author(s):  
Milos Petrovic ◽  
Slavisa Trajkovic
Keyword(s):  
Air Pollution ◽  
Carbon Monoxide ◽  
Motor Vehicles ◽  
Boundary Values ◽  
Exhaust Gases ◽  
Legal Limits ◽  
Healthy Functioning ◽  
Code Book ◽  
Urban Stress

Topic of this paper is air pollution as a cause of urban stress. This problem is analyzed within a case study in Bulevar Nemanjica in Nis. For the observed location, the measurements were conducted in a period of eight months (May 2007 - June 2007) by the Health Protection Institute in Nis. Motor traffic exhaust gases which were observed were: carbon-monoxide (CO), nitro-oxide (Nox) formaldehyde (HCHO). Measurements were taken at "Bulevar" green market, b standard methodology prescribed by the boundary values code book, immision measurement method, criteria for creation of measuring points and data records. Concentration of exhaust gases of motor vehicles did not exceed permissible limits, except carbon monoxide in May, while it continued to decrease and remained within the legal limits. If the Mediana - Bulevar Nemanjica location was enriched by green surface and pedestrian zones, this would lead to the decrease of exhaust gases concentration. That would prevent endangering environment and facilitate its healthy functioning.

scholarly journals Dispersion modelling of carbon monoxide and total suspended particulate emission from cement stacks: case study of PT. Semen Tonasa in Indonesia

2018 ◽  
Vol 4 (11) ◽  
pp. 266
Author(s):  
Fajar Septian Anwar ◽  
Anwar Mallongi ◽  
Alimin Maidin
Keyword(s):  
Carbon Monoxide ◽  
Industrial Area ◽  
Total Suspended Particulate ◽  
Particulate Emission ◽  
Cement Production ◽  
South Sulawesi ◽  
Suspended Particulate ◽  
Descriptive Approach ◽  
Dominant Direction

<p class="abstract"><strong>Background:</strong> Industrial activities in the cement production process produce emissions in the form of carbon monoxide (CO) and total suspended particulate (TSP) which have potential to cause environmental pollution in settlements around the industrial area. This study aimed to estimate the distribution emissions of CO and TSP concentrations at six settlements location around PT. Semen Tonasa of Pangkep Regency in a year.</p><p class="abstract"><strong>Methods:</strong> This observasional study was conducted by using descriptive approach. This study was conducted on May–June 2018. Meterological data used for this study were air temperature, solar radiation, wind direction, and wind speed in 2014–2017 collected from Maros Climatology Station and data about seven main stack characteristics in 2014–2017 were collected from environmental services of South Sulawesi Province.  </p><p class="abstract"><strong>Results:</strong> The highest CO and TSP concentrations predicted in each location were respectively, 17.02 μg/m<sup>3</sup> and 6.56 μg/m<sup>3</sup> at Bontoa, 27.52 μg/m<sup>3</sup> and 10.4 μg/m<sup>3</sup> at Taraweang, 443.65 μg/m<sup>3</sup> and 148.41 μg/m<sup>3</sup> at Masjid Taqwa, 22.21 μg/m<sup>3</sup> and 3.1 μg/m<sup>3</sup> at Biringere, 1.17 μg/m<sup>3</sup> and 1.36 μg/m<sup>3</sup> at Kampung Sela, 19.07 μg/m<sup>3</sup> and at 15.54 μg/m<sup>3</sup> at Mangilu.</p><p class="abstract"><strong>Conclusions:</strong> The dominant direction of CO and TSP dispersion was from the west. The highest concentrations were predicted at Masjid Taqwa in the most month. Maximum CO and TSP concentrations were not higher than the local regulation. Thus, it can be concluded that CO and TSP emissions from the cement plant have no impact on health in nearby communities.</p>

scholarly journals Injection in the lower stratosphere of biomass fire emissions followed by long-range transport: a MOZAIC case study

2008 ◽  
Vol 8 (6) ◽  
pp. 20925-20964
Author(s):  
J.-P. Cammas ◽  
J. Brioude ◽  
J.-P. Chaboureau ◽  
J. Duron ◽  
C. Mari ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Carbon Monoxide ◽  
Long Range ◽  
Source Region ◽  
Eastern Coast ◽  
Long Range Transport ◽  
Mixing Ratio ◽  
Fire Emissions ◽  
Range Transport

Abstract. This paper analyses a stratospheric injection by deep convection of biomass fire emissions over North America (Alaska, Yukon and Northwest Territories) on 24 June 2004 and its long-range transport over the eastern coast of the United States and the eastern Atlantic. The case study is done using MOZAIC observations of ozone, carbon monoxide, nitrogen oxides (NOx+PAN) and water vapour during the crossing of the southernmost tip of an upper level trough over the Eastern Atlantic on 30 June 03:00 UTC and 10:00 UTC and in a vertical profile over Washington DC on 30 June 17:00 UTC, and by lidar observations of aerosol backscattering at Madison (University of Wisconsin) on 28 June. Attribution of the plumes to the boreal fires is achieved by backward simulations with a Lagrangian particle dispersion model (FLEXPART). A simulation with the Meso-NH model for the source region shows that a boundary layer tracer, mimicking the boreal forest fire smoke, is lofted into the lowermost stratosphere (2–5 pvu layer) during the diurnal convective cycle. The isentropic levels (above 335 K) correspond to those of the downstream MOZAIC observations. The parameterized convective detrainment flux is intense enough to fill the volume of a model mesh (20 km horizontal, 500 m vertical) above the tropopause with pure boundary layer air in a time period compatible with the convective diurnal cycle, i.e. about 5 h. The maximum instantaneous detrainment fluxes deposited about 15–20% of the initial boundary layer tracer concentration at 335 K, which according to the 275-ppbv carbon monoxide maximum mixing ratio observed by MOZAIC over eastern Atlantic, would be associated with a 1.4–1.8 ppmv carbon monoxide mixing ratio in the boundary layer over the source region.

scholarly journals Phenomenological and Thermodynamic Model of Gas Exchanges in the Placenta during Pregnancy: A Case Study of Intoxication of Carbon Monoxide

2019 ◽  
Vol 16 (21) ◽  
pp. 4138 ◽  
Author(s):  
Juliana Rangel Cenzi ◽  
Cyro Albuquerque ◽  
Carlos Eduardo Keutenedjian Mady
Keyword(s):  
Carbon Monoxide ◽  
Respiratory System ◽  
Venous Blood ◽  
Circulatory System ◽  
Air Pollutant ◽  
Male Adult ◽  
Gas Exchanges ◽  
Order Of Magnitude ◽  
Different Gases

The present work simulates the transport of oxygen, carbon dioxide, and carbon monoxide between a fetus’s circulatory system and the mother’s. The organ responsible for this exchange is the placenta. Carbon monoxide is a common air pollutant, and it impacts the physiological conditions even in low concentration. The impacts of carbon monoxide are especially dangerous for pregnant women, fetuses, and newborn babies. A model of carbon monoxide transport, from the literature, is modified to simulate a pregnant woman (original model was a male), therefore changing some parameters to express the adjusted respiratory system. It was considered the gas exchange in the placenta, to evaluate the concentration of these different gases in the fetus arterial and venous blood. Three methods of the exergy analysis are implemented for both mother and fetus respiratory systems, aiming at the comparison with the respiratory system of a male adult. The destroyed exergy of the literature did not have the same trend as the models proposed in this article, taking into consideration the hemoglobin reactions. In contrast, the entropy generation associated only with the diffusion transport phenomena was one order of magnitude lower than the other methods. The placenta destroyed exergy rate is significantly higher compared to the irreversibilities of the mother’s respiratory system. One possible explanation is the fact that the placenta has other physiological functions than gas transportation.

Case-based learning of blood oxygen transport

2006 ◽  
Vol 30 (4) ◽  
pp. 224-229 ◽  
Author(s):  
William H. Cliff
Keyword(s):  
Carbon Monoxide ◽  
Oxygen Transport ◽  
Carbon Monoxide Poisoning ◽  
External Respiration ◽  
Blood Oxygen ◽  
Dissociation Curve ◽  
Robust Model ◽  
Case Based Learning ◽  
Case Based

A case study about carbon monoxide poisoning was used help students gain a greater understanding of the physiology of oxygen transport by the blood. A review of student answers to the case questions showed that students can use the oxygen-hemoglobin dissociation curve to make meaningful determinations of oxygen uptake and delivery. However, the fact that many students had difficulty locating the effect of carbon monoxide poisoning in the process of external respiration suggests that these students have not built a robust model of how oxygen distributes itself between the plasma and hemoglobin. This suggests that more determined emphasis on how oxygen enters the blood and how it is partitioned between hemoglobin and the plasma would help students develop more accurate mental models of how oxygen moves from the lungs to the tissues.

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