scholarly journals A Case and Review of Ophthalmomyiasis Caused by Oestrus ovis in the Central Valley of California, United States

2019 ◽  
Vol 7 ◽  
pp. 232470961983585 ◽  
Author(s):  
Carlos D’Assumpcao ◽  
Addie Bugas ◽  
Arash Heidari ◽  
Sandra Sofinski ◽  
Rick A. McPheeters
Keyword(s):  
United States ◽  
Urban Areas ◽  
Pupal Stage ◽  
Central Valley ◽  
Oestrus Ovis ◽  
First Case ◽  
Bot Fly ◽  
Natural Hosts

Ophthalmomyiasis externa is the infestation of external ocular structures most commonly by Oestrus ovis, sheep nasal bot fly, which have a pupal stage in soil. Farmers and shepherds are commonly affected but rarely in urban areas. This is the first case of Oestrus ovis ophthalmomyiasis externa in California since Catalina Island 1986. No livestock exposure was noted. Manure fertilizer sourced from grazing fields of natural hosts was used on a local urban sports field and is the suspected source.

The Other Side of the Valley

2011 ◽  
Vol 11 (4) ◽  
pp. 108-111
Author(s):  
Barry Estabrook
Keyword(s):  
United States ◽  
Los Angeles ◽  
Urban Areas ◽  
Food Production ◽  
Large Scale ◽  
Central Valley ◽  
The United States ◽  
The Other ◽  
Ground Zero ◽  
Organic Farmers

California's Central Valley is ground zero for large-scale, industrialized agriculture in the United States, and it is paying a high environmental price for that distinction. Its water is contaminated, and its air is more polluted than that in large, urban areas such as Los Angeles. But there is another side to food production in the Central Valley. Small, artisanal, often organic farmers are showing that it is possible to raise crops and animals profitably and sustainability. If it can be done in the Central Valley, it can be done anywhere.

scholarly journals Human external ophthalmomyiasis caused by Lucilia sericata Meigen (Diptera: Calliphoridae) – a green bottle fly

2014 ◽  
Vol 8 (07) ◽  
pp. 925-928 ◽  
Author(s):  
Tanja Kalezic ◽  
Milenko Stojkovic ◽  
Ivana Vukovic ◽  
Radoslava Spasic ◽  
Marko Andjelkovic ◽  
...  
Keyword(s):  
Elderly Woman ◽  
Lucilia Sericata ◽  
Oestrus Ovis ◽  
Larval Form ◽  
First Case ◽  
Bot Fly ◽  
Green Bottle

Ophthalmomyiasis externa is the result of infestation of the conjunctiva by the larval form or maggots of flies from the order Diptera. If not recognized and managed appropriately, it can be complicated by the potentially fatal condition ophthalmomyiasis interna. Ophthalmomyiasis externa is mainly caused by the sheep bot fly (Oestrus ovis). We present the first case, to our knowledge, of ophthalmomyiasis externa in an elderly woman from Belgrade caused by Lucilia sericata Meigen – a green bottle fly.

Identification of Potential Freight Parking Locations in Urban Areas

2021 ◽  
pp. 036119812110130
Author(s):  
Glenn Vorhes ◽  
Ernest Perry ◽  
Soyoung Ahn
Keyword(s):  
United States ◽  
Information System ◽  
Satellite Imagery ◽  
Urban Areas ◽  
The United States ◽  
Truck Drivers ◽  
Short List ◽  
Automated Processes ◽  
Parking Facilities ◽  
Urban Sites

Truck parking is a crucial element of the United States’ transportation system as it provides truckers with safe places to rest and stage for deliveries. Demand for truck parking spaces exceeds supply and shortages are especially common in and around urban areas. Freight operations are negatively affected as truck drivers are unable to park in logistically ideal locations. Drivers may resort to unsafe practices such as parking on ramps or in abandoned lots. This report seeks to examine the potential parking availability of vacant urban parcels by establishing a methodology to identify parcels and examining whether the identified parcels are suitable for truck parking. Previous research has demonstrated that affordable, accessible parcels are available to accommodate truck parking. When used in conjunction with other policies, adaptation of urban sites could help reduce the severity of truck parking shortages. Geographic information system parcel and roadway data were obtained for one urban area in each of the 10 Mid America Association of Transportation Officials region states. Area and proximity filters were applied followed by spectral analysis of satellite imagery to identify candidate parcels for truck parking facilities within urban areas. The automated processes created a ranked short list of potential parcels from which those best suited for truck parking could be efficiently identified for inspection by satellite imagery. This process resulted in a manageable number of parcels to be evaluated further by local knowledge metrics such as availability and cost, existing infrastructure and municipal connections, and safety.

Beyond studentification in United States College Towns: Neighborhood change in the knowledge nodes, 1980–2010

2017 ◽  
Vol 49 (6) ◽  
pp. 1341-1360 ◽  
Author(s):  
Nathan S Foote
Keyword(s):  
United States ◽  
Middle Class ◽  
Knowledge Economy ◽  
Urban Areas ◽  
Global Economy ◽  
Neighborhood Change ◽  
Global Knowledge ◽  
College Towns ◽  
The World ◽  
Social Geographies

With the rise of the cognitive-cultural (or knowledge) economy, urban areas around the world have experienced significant changes in their social geographies. Studentification is one such change that has occurred in cities hosting major universities around the world. This study extends the analysis of social change to vital knowledge nodes in the networked global economy: United States college towns. K-means cluster analysis is used to identify neighborhood types in ten cities with major research universities across four Census years: 1980, 1990, 2000, and 2010. Temporal and spatial analyses are then conducted to determine how these knowledge nodes have changed with the decline of the industrial economy and the rise of the knowledge economy. The analysis indicates the presence of six neighborhood types in these college towns: Middle Class, Minority-Concentrated, Stability, Elite, Mix/Renter, and Student. Over the course of the study period, the number of Elite neighborhoods increased considerably, while the number of Middle Class neighborhoods plummeted. The number of Mix/Renter neighborhoods also increased. Spatially, Student and Minority-Concentrated neighborhoods generally remained fairly clustered in the same areas across the study period. Elite neighborhoods spread across wider geographical areas over the course of the study period. These results are compared to previous studies on neighborhood change. The comparisons reveal that the knowledge nodes show some similar patterns to studentifying cities and to rapidly growing nodes in areas with ties to the global knowledge economy.

An economy of false securities? An analysis of murders inside gated residential developments in the United States

2012 ◽  
Vol 8 (2) ◽  
pp. 161-172 ◽  
Author(s):  
Rowland Atkinson ◽  
Oliver Smith
Keyword(s):  
United States ◽  
Urban Areas ◽  
The United States ◽  
Gated Communities ◽  
News Reports ◽  
Residential Developments ◽  
The Social ◽  
High Crime ◽  
Media Narratives ◽  
Forms Of Violence

The move to gated communities has been linked to both rising affluence and anxiety. These attempts to withdraw from the perceived dangers of urban areas are also predicated on the pursuit of a neighbourhood ideal, and freedom from danger is usually central to this ideal. This paper critically reconsiders these propositions by examining news reports and media narratives surrounding the nature of homicidal violence occurring within such developments. We have analysed fifty news reports from the last decade that address murder committed inside gated communities. In our analysis of these reports we suggest that attempts to neutralise danger in high crime societies are by no means guaranteed—even via the most strenuous efforts at deploying walls, gates and guards. Building on the arguments of Low (2003) and Zedner (2003), we suggest that demands for security are not only unending but that an outward-facing orientation that positions risk outside gated neighbourhoods is a denial of the continued danger of intimate and other forms of violence within communities and households behind gates. In this context the move to enclosure is more than a pragmatic attempt to defend against threat; it appears to reflect the impotence of efforts associated with addressing deep ontological insecurities. Studies continue to record high levels of fear in gated developments, and highly gendered risks of violence continue to be a part of the social reality of the segregated neighbourhood.

scholarly journals Mycobacterium talmoniae, a Potential Pulmonary Pathogen Isolated from Multiple Patients with Bronchiectasis in the United States, Including the First Case of Clinical Disease in a Patient with Cystic Fibrosis

2018 ◽  
Vol 57 (2) ◽  
Author(s):  
Ravikiran Vasireddy ◽  
Sruthi Vasireddy ◽  
Barbara A. Brown-Elliott ◽  
Alexander L. Greninger ◽  
Rebecca M. Davidson ◽  
...  
Keyword(s):  
United States ◽  
Cystic Fibrosis ◽  
16S Rrna ◽  
Type Strain ◽  
Gene Sequencing ◽  
The United States ◽  
Average Nucleotide Identity ◽  
Content Type ◽  
First Case ◽  
Multiple Patients

ABSTRACTWe characterize three respiratory isolates of the recently described speciesMycobacterium talmoniaerecovered in Texas, Louisiana, and Massachusetts, including the first case of disease in a patient with underlying cystic fibrosis. The three isolates had a 100% match toM. talmoniaeNE-TNMC-100812Tby complete 16S rRNA,rpoBregion V, andhsp65 gene sequencing. Core genomic comparisons between one isolate and the type strain revealed an average nucleotide identity of 99.8%. The isolates were susceptible to clarithromycin, amikacin, and rifabutin, while resistance was observed for tetracyclines, ciprofloxacin, and linezolid.M. talmoniaeshould be added to the list of potential pulmonary pathogens, including in the setting of cystic fibrosis.

Reducing Rural Car Ownership: Cultural Not Policy Changes?

2018 ◽  
Vol 2672 (6) ◽  
pp. 1-10 ◽  
Author(s):  
Emma L. Rearick ◽  
Gregory L. Newmark
Keyword(s):  
United States ◽  
Land Use ◽  
Environmental Sustainability ◽  
Urban Areas ◽  
The United States ◽  
Multiple Regression Model ◽  
Census Bureau ◽  
Matched Pair ◽  
Car Ownership ◽  
Quarter Century

Automobile use is recognized as affecting public health, environmental sustainability, land use, and household expense. Car use is closely tied to car ownership rates. Most car ownership research focuses on urban areas; however, 97% of the United States’ land area and a fifth of its population remains rural. Factors that affect car ownership in these communities may be different than in more urbanized areas. This research focuses on the 2,285 counties in the continental United States that are defined as entirely rural by the guidelines established in the Agricultural Act of 2014. These counties were grouped by five multi-state regions using U.S. Census Bureau definitions. Their percentage changes in car ownership, as well as other demographic variables, over a quarter century were calculated using data from the 1990 Decennial Census and the 2014 5-Year American Community Survey. A multiple regression model was estimated for each grouping to identify counties with lower-than-expected changes in car ownership. For each grouping, one of these outlying counties was selected and matched with another county whose changes in car ownership were within expected ranges given demographic developments. Local professionals were then interviewed to identify policies possibly responsible for the difference in car ownership trends between the matched-pair counties. The interviews suggested that, contrary to expectation, transportation policies had no discernable effect on rural car ownership, but land use polices and, more often, cultural factors linked to changing populations were associated with reduced rural car ownership.

The effects of population and housing density in urban areas on income in the United States

2020 ◽  
Vol 35 (1) ◽  
pp. 27-47
Author(s):  
Daniel Hummel
Keyword(s):  
United States ◽  
Urban Areas ◽  
Metropolitan Areas ◽  
Rapid Development ◽  
The United States ◽  
Housing Density ◽  
Cross Sectional ◽  
Urban Density ◽  
Urbanization Economies ◽  
Benefits And Costs

Cities in the United States have become increasingly less dense either from sprawl from rapid development or vacancy due to decline. The benefits and costs of urban density have been a topic of research since the mid-20th century. The effect of urban density on incomes is one of these areas of research. Based on concepts rooted in urbanization economies and social output, it is assumed in this paper that an increase in urban density increases incomes. Urban density is defined as population and housing density. It was found using a cross-sectional lagged mediated multiple regression that population and housing density have statistically significant indirect effects on income in a sample of more than 300 metropolitan areas in the United States. The significant effects of these variables on employment and the effect of employment on income mediated these effects.

scholarly journals Evaluation of dust and trace metal estimates from the Community Multiscale Air Quality (CMAQ) model version 5.0

2013 ◽  
Vol 6 (4) ◽  
pp. 883-899 ◽  
Author(s):  
K. W. Appel ◽  
G. A. Pouliot ◽  
H. Simon ◽  
G. Sarwar ◽  
H. O. T. Pye ◽  
...  
Keyword(s):  
United States ◽  
Air Quality ◽  
Trace Metals ◽  
Urban Areas ◽  
Temporal Distribution ◽  
Air Pollutant ◽  
Eastern United States ◽  
Air Quality Model ◽  
Quality Model ◽  
Model Version

Abstract. The Community Multiscale Air Quality (CMAQ) model is a state-of-the-science air quality model that simulates the emission, transformation, transport, and fate of the many different air pollutant species that comprise particulate matter (PM), including dust (or soil). The CMAQ model version 5.0 (CMAQv5.0) has several enhancements over the previous version of the model for estimating the emission and transport of dust, including the ability to track the specific elemental constituents of dust and have the model-derived concentrations of those elements participate in chemistry. The latest version of the model also includes a parameterization to estimate emissions of dust due to wind action. The CMAQv5.0 modeling system was used to simulate the entire year 2006 for the continental United States, and the model estimates were evaluated against daily surface-based measurements from several air quality networks. The CMAQ modeling system overall did well replicating the observed soil concentrations in the western United States (mean bias generally around ±0.5 μg m−3); however, the model consistently overestimated the observed soil concentrations in the eastern United States (mean bias generally between 0.5–1.5 μg m−3), regardless of season. The performance of the individual trace metals was highly dependent on the network, species, and season, with relatively small biases for Fe, Al, Si, and Ti throughout the year at the Interagency Monitoring of Protected Visual Environments (IMPROVE) sites, while Ca, K, and Mn were overestimated and Mg underestimated. For the urban Chemical Speciation Network (CSN) sites, Fe, Mg, and Mn, while overestimated, had comparatively better performance throughout the year than the other trace metals, which were consistently overestimated, including very large overestimations of Al (380%), Ti (370%) and Si (470%) in the fall. An underestimation of nighttime mixing in the urban areas appears to contribute to the overestimation of trace metals. Removing the anthropogenic fugitive dust (AFD) emissions and the effects of wind-blown dust (WBD) lowered the model soil concentrations. However, even with both AFD emissions and WBD effects removed, soil concentrations were still often overestimated, suggesting that there are other sources of errors in the modeling system that contribute to the overestimation of soil components. Efforts are underway to improve both the nighttime mixing in urban areas and the spatial and temporal distribution of dust-related emission sources in the emissions inventory.

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