Cutting EPA indoor air pollution research will cost money and lives

Corsi and Stephens writes about Planet Texas 2050 and the current administration's reduction in funding for the EPA in an article published in 2019.Office of the VP for Researc

Spatial and temporal variations in indoor environmental conditions, human occupancy, and operational characteristics in a new hospital building.

The dynamics of indoor environmental conditions, human occupancy, and operational characteristics of buildings influence human comfort and indoor environmental quality, including the survival and progression of microbial communities. A suite of continuous, long-term environmental and operational parameters were measured in ten patient rooms and two nurse stations in a new hospital building in Chicago, IL to characterize the indoor environment in which microbial samples were taken for the Hospital Microbiome Project. Measurements included environmental conditions (indoor dry-bulb temperature, relative humidity, humidity ratio, and illuminance) in the patient rooms and nurse stations; differential pressure between the patient rooms and hallways; surrogate measures for human occupancy and activity in the patient rooms using both indoor air CO2 concentrations and infrared doorway beam-break counters; and outdoor air fractions in the heating, ventilating, and air-conditioning systems serving the sampled spaces. Measurements were made at 5-minute intervals over consecutive days for nearly one year, providing a total of ∼8×106 data points. Indoor temperature, illuminance, and human occupancy/activity were all weakly correlated between rooms, while relative humidity, humidity ratio, and outdoor air fractions showed strong temporal (seasonal) patterns and strong spatial correlations between rooms. Differential pressure measurements confirmed that all patient rooms were operated at neutral pressure. The patient rooms averaged about 100 combined entrances and exits per day, which suggests they were relatively lightly occupied compared to higher traffic environments (e.g., retail buildings) and more similar to lower traffic office environments. There were also clear differences in several environmental parameters before and after the hospital was occupied with patients and staff. Characterizing and understanding factors that influence these building dynamics is vital for hospital environments, where they can impact patient health and the survival and spread of healthcare associated infections

Designing Scalable Networks for Future Large Datacenters

Modern datacenters require a network with high cross-section bandwidth, fine-grained security, support for virtualization, and simple management that can scale to hundreds of thousands of hosts at low cost. This thesis first presents the firmware for Rain Man, a novel datacenter network architecture that meets these requirements, and then performs a general scalability study of the design space. The firmware for Rain Man, a scalable Software-Defined Networking architecture, employs novel algorithms and uses previously unused forwarding hardware. This allows Rain Man to scale at high performance to networks of forty thousand hosts on arbitrary network topologies. In the general scalability study of the design space of SDN architectures, this thesis identifies three different architectural dimensions common among the networks: source versus hop-by-hop routing, the granularity at which flows are routed, and arbitrary versus restrictive routing and finds that a source-routed, host-pair granularity network with arbitrary routes is the most scalable

An exploratory survey of the needs and adjustment to retirement of persons residing in Port Alfred

The problem that was chosen to be investigated, was that, within the white middle class South African white-collar worker there appears to be a tendency to live for the "pie in the sky" - which for most seems to be retirement to the idyllic cottage by the sea. Within the South African scenario, there seems to be a definite lack of career planning or at least planning for retirement, other than the financial emphasis. Upon reaching the "ultimate" retirement, retirees take their pension money and move to the coast, expecting pure bliss. The result of their lack of forethought is that they settle in a totally different climate, away from the support of family and friends, possibly finding their income inadequate, with the result that many fall seriously ill, and then discover a lack of geriatric care or a hospital at the time in their lives when they need it the most. The aim of the research was to investigate these issues using a specific location - Port Alfred, researching the fact that Port Alfred continues to be a retirement haven, despite appearing to lack the necessary facilities required by the elderly. The method of the research was to initially administer a pilot questionnaire to a few elderly residents at random, which was then followed up by the formal personally administered questionnaire to a sample. The sample of retired elderly residents in Port Alfred was chosen at random primarily from the various old age homes in Port Alfred. This questionnaire was administered in 1983 but due to financial and personal reasons, the results were not written up. In 1990, the research was continued with a further questionnaire being administered in 1991. The research direction was altered slightly to identify not only what resources were felt to be lacking, but also to identify how well the retired persons of Port Alfred had managed their transition to retirement. The results showed some similarity between the 1983 and the 1991 research. On the surface the retirees appeared well-adjusted and content, but when it was delved deeper, they appeared to have opted out of making any great effort to change their situation, but rather had taken the view that they had earned their rest, would make the best of what they had, and leave it to someone else to champion their cause. This meant that they relied heavily upon those in their community to meet their obvious needs. The promised hospital that they had arduously raised funds for had not materialised, and that seemed to have been the last effort that they had been prepared to make, they were now at rest. The conclusion was that, although the retirees had made the best of their situation, this definitely did not mean that their resources were adequate. Various charities and social services were at work in the community to redress the imbalance, but it was felt that these would in turn benefit by the addition of a social worker. This social worker would coordinate these services and take responsibility for the community at large, particularly addressing the need to unify the services with those to the large non-White community, in the (on-going) development of the New South Afric

Experimental Evaluations of the Impact of an Additive Oxidizing Electronic Air Cleaner on Particles and Gases

Electronic air cleaning (EAC) technologies have garnered significant attention for use in buildings. Many EAC technologies rely on the addition of reactive constituents to indoor air to react with gas-phase compounds, enhance particle deposition, and/or inactivate microorganisms. However, limited data are available on the efficacy of many EAC technologies and their potential to form chemical byproducts during operation. Here we experimentally evaluate the indoor air quality impacts, specifically targeting particles and gases but not microbial constituents, of a commercially available additive oxidizing EAC that generates positive and negative ions and hydrogen peroxide (H2O2). Tests were conducted in a large unoccupied test chamber in Chicago, IL and an unoccupied laboratory in Portland, OR under a combination of natural conditions (i.e., without pollutant injection) and perturbation conditions (i.e., with pollutant injection and decay). A combination of integrated and time-resolved measurements was used across both test locations. Chamber tests at lower airflow rates demonstrated that operation of the EAC: (i) had no discernible impact on particle concentrations or particle loss rates, with estimated clean air delivery rates (CADRs) for various particle measures less than ±10 m3/h, (ii) was associated with apparent decreases in some volatile organic compounds (VOCs) and increases in other VOCs and aldehydes, especially acetaldehyde, although a combination of high propagated uncertainty, limitations in test methods (e.g., lack of replicates), and variability between repeated tests limit what quantitative conclusions can be drawn regarding gas-phase organics; (iii) did generate H2O2, assessed using a crude measure, and (iv) did not generate ozone (O3). Laboratory tests at higher airflow rates, which involved injection and decay of particles and a single VOC (limonene), both simultaneously and separately, demonstrated that: (i) pollutant loss rates for both particles and limonene were slightly lower with the EAC on compared to off, yielding slightly negative pollutant removal efficiencies (albeit largely within propagated uncertainty) and (ii) there was a change in observed concentrations of one potential limonene degradation product, m/z 59 (putatively identified as acetone), with steady-state levels increasing from 10 ppb (air cleaner off) to 15 ppb (air cleaner on). No increases or decreases beyond measurement uncertainty were observed for other analyzed gaseous limonene degradation products. Overall, both chamber and laboratory tests demonstrated negligible effectiveness of this device at the test conditions described herein for removing particles and mixed results for VOCs, including decreases in some VOCs, no discernible differences in other VOCs, and apparent increases in other compounds, especially lower molecular weight aldehydes including acetaldehyde

2018-2019 Illinois Hunter Harvest Report

A random sample of 5,000 hunters was selected from adult 2018 Illinois resident Habitat Stamp and hunting license holders. Selected individuals were mailed an 8-page self-administered questionnaire designed to query hunters about their hunting activities and harvest in Illinois. We received 2,631 questionnaires, 2,284 of which were usable, for a 47% response rate. Illinois resident license sales decreased 5% from 2017-18 (263,495) to 250,007 for the 2018-19 seasons. Total days afield for rabbit, quail, non-wild pheasant, dove, crow, gray squirrel, fox squirrel, turkey, deer, red fox, gray fox, coyote, and opossum decreased. Harvest increased for 5 game species (wild quail, wild pheasant, groundhog, deer, and red fox) from 2017-18. Hunters were also asked questions regarding hunting activity and harvest in Illinois, recruitment and retention, perceived effects of Epizootic Hemorrhagic Disease (EHD) and Blue Tongue Virus (BTV) on deer hunting, and their attitudes toward wildlife and hunting in Illinois. Estimates of wild quail and pheasant harvested beginning during 2011-12 were calculated differently than previous estimates to include harvest of captive-raised birds distinct from wild birds, so comparisons across years are to be made with caution.Federal Aid Project Number W-112-R-28unpublishednot peer reviewedOpe

Hunter Participation, Harvest, and Hunting Behavior During the 2019 Illinois Conservation Order

Harvest of light geese (Chen caerulescens, Chen rossii) during the 2019 Illinois Light Goose Conservation Order was estimated at 86,683. An estimated 2,694 hunters participated in the 2019 Illinois Light Goose Conservation Order. Hunters spent an estimated 30,206 days afield during 2019, and the majority (64%) of the snow goose harvest occurred during the month of February. Due to changes in sampling of addresses and calculation of estimates, comparisons should not be made to years prior to 2014. Hunters were sampled from Harvest Information Program (HIP) registrants who reported they hunted snow and other light geese (including Ross’ and Blue geese) during the 2018 Light Goose Conservation Order. Electronic calls were used by 83.8% of hunters, 80.2% used unplugged shotguns, and 59.5% reported hunting between sunset and ½ hour after sunset. About forty-four percent of active snow goose hunters indicated an increase in effort over the past five years, and 7.2% of hunters had increased harvest of snow goose over the previous 5 years. Approximately fifty-three percent of active snow goose hunters used a guide or outfitter while hunting snow geese during the 2019 order.Federal Aid Project Number W-112-R-28unpublishednot peer reviewedOpe

Microbial and metabolic succession on common building materials under high humidity conditions.

Despite considerable efforts to characterize the microbial ecology of the built environment, the metabolic mechanisms underpinning microbial colonization and successional dynamics remain unclear, particularly at high moisture conditions. Here, we applied bacterial/viral particle counting, qPCR, amplicon sequencing of the genes encoding 16S and ITS rRNA, and metabolomics to longitudinally characterize the ecological dynamics of four common building materials maintained at high humidity. We varied the natural inoculum provided to each material and wet half of the samples to simulate a potable water leak. Wetted materials had higher growth rates and lower alpha diversity compared to non-wetted materials, and wetting described the majority of the variance in bacterial, fungal, and metabolite structure. Inoculation location was weakly associated with bacterial and fungal beta diversity. Material type influenced bacterial and viral particle abundance and bacterial and metabolic (but not fungal) diversity. Metabolites indicative of microbial activity were identified, and they too differed by material

Hunter Participation, Harvest, and Hunting Behavior During the 2021 Illinois Conservation Order

Illinois Department of Natural Resources, Division of Wildlifeunpublishednot peer reviewedOpe