keyword
MENU ▼
Read by QxMD icon Read
search

Hvac

keyword
https://www.readbyqxmd.com/read/27729098/physical-security-and-it-convergence-managing-the-cyber-related-risks
#1
Tim McCreight, Doug Leece
The convergence of physical security devices into the corporate network is increasing, due to the perceived economic benefits and efficiencies gained from using one enterprise network. Bringing these two networks together is not without risk. Physical devices like closed circuit television cameras (CCTV), card access readers, and heating, ventilation and air conditioning controllers (HVAC) are typically not secured to the standards we expect for corporate computer networks. These devices can pose significant risks to the corporate network by creating new avenues to exploit vulnerabilities in less-than-secure implementations of physical systems...
2016: Journal of Business Continuity & Emergency Planning
https://www.readbyqxmd.com/read/27565062/long-term-outcomes-of-sandwich-ventral-hernia-repair-paired-with-hybrid-vacuum-assisted-closure
#2
Caitlin W Hicks, Katherine E Poruk, Pablo A Baltodano, Kevin C Soares, Said C Azoury, Carisa M Cooney, Peter Cornell, Frederic E Eckhauser
BACKGROUND: Sandwich ventral hernia repair (SVHR) may reduce ventral hernia recurrence rates, although with an increased risk of surgical site occurrences (SSOs) and surgical site infections (SSIs). Previously, we found that a modified negative pressure wound therapy (hybrid vacuum-assisted closure [HVAC]) system reduced SSOs and SSIs after ventral hernia repair. We aimed to describe our outcomes after SVHR paired with HVAC closure. METHODS: We conducted a 4-y retrospective review of all complex SVHRs (biologic mesh underlay and synthetic mesh overlay) with HVAC closure performed at our institution by a single surgeon...
August 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27564375/quantification-of-the-fungal-fraction-released-from-various-preloaded-fibrous-filters-during-a-simulated-ventilation-restart
#3
K Morisseau, A Joubert, L Le Coq, Y Andres
This study aimed to demonstrate that particles, especially those associated with fungi, could be released from fibrous filters used in the air-handling unit (AHU) of heating, ventilation and air-conditioning (HVAC) systems during ventilation restarts. Quantification of the water retention capacity and SEM pictures of the filters was used to show the potential for fungal proliferation in unused or preloaded filters. Five fibrous filters with various particle collection efficiencies were studied: classes G4, M5, M6, F7, and combined F7 according to European standard EN779:2012...
August 26, 2016: Indoor Air
https://www.readbyqxmd.com/read/27385357/quantitative-filter-forensics-for-indoor-particle-sampling
#4
Daniel Haaland, Jeffrey Siegel
Filter forensics is a promising indoor air investigation technique involving the analysis of dust which has collected on filters in central forced-air HVAC or portable systems to determine the presence of indoor particle-bound contaminants. In this paper, we summarize past filter forensics research to explore what it reveals about the sampling technique and the indoor environment. There are 60 investigations in the literature that have used this sampling technique for a variety of biotic and abiotic contaminants...
July 6, 2016: Indoor Air
https://www.readbyqxmd.com/read/27213570/indoor-outdoor-relationships-of-pm2-5-in-four-residential-dwellings-in-winter-in-the-yangtze-river-delta-china
#5
Fang Wang, Dan Meng, Xiuwei Li, Junjie Tan
Indoor and outdoor air PM2.5 concentrations in four residential dwellings characterized with different building envelope air tightness levels and HVAC-filter configurations in Yangtze River Delta (YRD) were measured during winter periods in 2014-2015. Steady-state models for indoor PM2.5 were developed for each of the tested dwellings, based on mass balance equation. The indoor air PM2.5 concentrations in the four tested apartments were significantly different. The lowest geometric mean values of indoor air PM2...
August 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27175913/concentrations-and-sources-of-airborne-particles-in-a-neonatal-intensive-care-unit
#6
Dusan Licina, Seema Bhangar, Brandon Brooks, Robyn Baker, Brian Firek, Xiaochen Tang, Michael J Morowitz, Jillian F Banfield, William W Nazaroff
Premature infants in neonatal intensive care units (NICUs) have underdeveloped immune systems, making them susceptible to adverse health consequences from air pollutant exposure. Little is known about the sources of indoor airborne particles that contribute to the exposure of premature infants in the NICU environment. In this study, we monitored the spatial and temporal variations of airborne particulate matter concentrations along with other indoor environmental parameters and human occupancy. The experiments were conducted over one year in a private-style NICU...
2016: PloS One
https://www.readbyqxmd.com/read/27169321/the-right-temperature-advances-in-hvac-technology-help-to-improve-air-quality
#7
Neal Lorenzi
No abstract text is available yet for this article.
March 2016: Health Facilities Management
https://www.readbyqxmd.com/read/27150298/safety-and-mortality-benefits-of-delivering-vitamin-a-supplementation-at-6-months-of-age-in-sub-saharan-africa
#8
Roland Kupka, Jennifer Nielsen, Christina Nyhus Dhillon, Jessica Blankenship, Marjorie J Haskell, Shawn K Baker, Kenneth H Brown
BACKGROUND: Vitamin A supplementation (VAS) among children 6 to 59 months of age reduces vitamin A deficiency (VAD)-related mortality. Child health days (CHDs) only reach an estimated 16.7% of children at exactly 6 months, leaving uncovered children at risk of VAD-related mortality; similarly, VAS provided at 9 months of age with measles-containing vaccine leaves infants unprotected for 3 months. OBJECTIVE: Using data from sub-Saharan Africa, we estimated the mortality benefits and safety of providing VAS at age 6 months, compared to delivery through CHDs and at 9 months...
May 5, 2016: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/27099405/using-coupled-energy-airflow-and-iaq-software-trnsys-contam-to-evaluate-building-ventilation-strategies
#9
W Stuart Dols, Steven J Emmerich, Brian J Polidoro
: Building energy analysis tools are available in many forms that provide the ability to address a broad spectrum of energy-related issues in various combinations. Often these tools operate in isolation from one another, making it difficult to evaluate the interactions between related phenomena and interacting systems, forcing oversimplified assumptions to be made about various phenomena that could otherwise be addressed directly with another tool. One example of such interdependence is the interaction between heat transfer, inter-zone airflow and indoor contaminant transport...
March 2016: Building Services Engineering Research & Technology: BSER & T
https://www.readbyqxmd.com/read/27055570/talaromyces-rubrifaciens-a-new-species-discovered-from-heating-ventilation-and-air-conditioning-systems-in-china
#10
Yi Luo, Xiaohong Lu, Wu Bi, Fan Liu, Weiwei Gao
A new Talaromyces species, T. rubrifaciens, was isolated from supply air outlets of heating, ventilation and air conditioning (HVAC) systems in three kinds of public building in Beijing and Nanjing, China. Morphologically it exhibits many characters of section Trachyspermi but is distinguished from other species of this section by restricted growth and broad and strictly biverticillate conidiophores. Phylogenetic analyses based on the internal transcribed spacer rDNA (ITS), β-tubulin (BenA), calmodulin (CaM) and RNA polymerase second largest subunit (RPB2) genes reveal that T...
July 2016: Mycologia
https://www.readbyqxmd.com/read/27018492/microbial-analyses-of-airborne-dust-collected-from-dormitory-rooms-predict-the-sex-of-occupants
#11
Julia C Luongo, Albert Barberán, Robin Hacker-Cary, Emily E Morgan, Shelly L Miller, Noah Fierer
We have long known that human occupants are a major source of microbes in the built environment, thus raising the question: how much can we learn about the occupants of a building by analyzing the microbial communities found in indoor air? We investigated bacterial and fungal diversity found in airborne dust collected onto heating, ventilation, and air-conditioning (HVAC) air filters and settling plates from 91 rooms within a university dormitory. The sex of the room occupants had the most significant effect on the bacterial communities, while the room occupants had no significant effect on fungal communities...
March 28, 2016: Indoor Air
https://www.readbyqxmd.com/read/26999174/modeling-environmental-tobacco-smoke-ets-infiltration-in-low-income-multifamily-housing-before-and-after-building-energy-retrofits
#12
Maria Patricia Fabian, Sharon Kitman Lee, Lindsay Jean Underhill, Kimberly Vermeer, Gary Adamkiewicz, Jonathan Ian Levy
Secondhand exposure to environmental tobacco smoke (ETS) in multifamily housing remains a health concern despite strong recommendations to implement non-smoking policies. Multiple studies have documented exposure to ETS in non-smoking units located in buildings with smoking units. However, characterizing the magnitude of ETS infiltration or measuring the impact of building interventions or resident behavior on ETS is challenging due to the complexities of multifamily buildings, which include variable resident behaviors and complex airflows between numerous shared compartments (e...
March 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/26958457/hygiene-guideline-for-the-planning-installation-and-operation-of-ventilation-and-air-conditioning-systems-in-health-care-settings-guideline-of-the-german-society-for-hospital-hygiene-dgkh
#13
Rüdiger Külpmann, Bärbel Christiansen, Axel Kramer, Peter Lüderitz, Frank-Albert Pitten, Frank Wille, Klaus-Dieter Zastrow, Friederike Lemm, Regina Sommer, Milo Halabi
Since the publication of the first "Hospital Hygiene Guideline for the implementation and operation of air conditioning systems (HVAC systems) in hospitals" (http://www.krankenhaushygiene.de/informationen/fachinformationen/leitlinien/12) in 2002, it was necessary due to the increase in knowledge, new regulations, improved air-conditioning systems and advanced test methods to revise the guideline. Based on the description of the basic features of ventilation concepts, its hygienic test and the usage-based requirements for ventilation, the DGKH section "Ventilation and air conditioning technology" attempts to provide answers for the major air quality issues in the planning, design and the hygienically safe operation of HVAC systems in rooms of health care...
2016: GMS Hygiene and Infection Control
https://www.readbyqxmd.com/read/26944839/extraction-of-aerosol-deposited-yersinia-pestis-from-indoor-surfaces-to-determine-bacterial-environmental-decay
#14
Ian M Gut, Ryan A Bartlett, John J Yeager, Brian Leroux, Shanna Ratnesar-Shumate, Paul Dabisch, David K R Karaolis
UNLABELLED: Public health and decontamination decisions following an event that causes indoor contamination with a biological agent require knowledge of the environmental persistence of the agent. The goals of this study were to develop methods for experimentally depositing bacteria onto indoor surfaces via aerosol, evaluate methods for sampling and enumerating the agent on surfaces, and use these methods to determine bacterial surface decay. A specialized aerosol deposition chamber was constructed, and methods were established for reproducible and uniform aerosol deposition of bacteria onto four coupon types...
May 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/26942410/seasonal-dynamics-of-the-airborne-bacterial-community-and-selected-viruses-in-a-children-s-daycare-center
#15
Aaron J Prussin, Amit Vikram, Kyle J Bibby, Linsey C Marr
Children's daycare centers appear to be hubs of respiratory infectious disease transmission, yet there is only limited information about the airborne microbial communities that are present in daycare centers. We have investigated the microbial community of the air in a daycare center, including seasonal dynamics in the bacterial community and the presence of specific viral pathogens. We collected filters from the heating, ventilation, and air conditioning (HVAC) system of a daycare center every two weeks over the course of a year...
2016: PloS One
https://www.readbyqxmd.com/read/26937052/air-cleaning-performance-of-a-new-environmentally-controlled-primary-crusher-operator-booth
#16
J A Organiscak, A B Cecala, J A Zimmer, B Holen, J R Baregi
The National Institute for Occupational Safety and Health (NIOSH) cooperated with 3M Company in the design and testing of a new environmentally controlled primary crusher operator booth at the company's Wausau granite quarry near Wausau, WI. This quarry had an older crusher booth without a central heating, ventilation and air conditioning (HVAC) system, and without an air filtration and pressurization system. A new replacement operator booth was designed and installed by 3M based on design considerations from past NIOSH research on enclosed cab filtration systems...
February 2016: Mining Engineering
https://www.readbyqxmd.com/read/26879106/human-local-and-total-heat-losses-in-different-temperature
#17
Lijuan Wang, Hui Yin, Yuhui Di, Yanfeng Liu, Jiaping Liu
This study investigates the effects of operative temperature on the local and total heat losses, and the relationship between the heat loss and thermal sensation. 10 local parts of head, neck, chest, abdomen, upper arm, forearm, hand, thigh, leg and foot are selected. In all these parts, convection, radiation, evaporation, respiration, conduction and diffusion heat losses are analyzed when operative temperature is 23, 28, 33 and 37 °C. The local heat losses show that the radiation and convection heat losses are mainly affected by the area of local body, and the heat loss of the thigh is the most in the ten parts...
April 1, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/26841147/monitoring-of-microscopic-filamentous-fungi-in-indoor-air-of-transplant-unit
#18
Ondřej Holý, Ivanka Matoušková, Alena Kubátová, Petr Hamal, Lucie Svobodová, Eva Jurásková, Luděk Raida
AIM: The aim of the study was to control the microbial contamination of indoor air monitored monthly at the Transplant Unit of the University Hospital Olomouc from August 2010 to July 2011. METHODS: The unit is equipped with a three-stage air filtration system with HEPA filters. The MAS-100 air sampler (Merck, GER) was used. Twenty locations were singled out for the purposes of collecting a total of 720 samplings of the indoor air. Swabs of the HVAC diffusers at the sampling locations were always carried out after the sampling of the indoor air...
December 2015: Central European Journal of Public Health
https://www.readbyqxmd.com/read/26642533/design-requirements-for-hvac-systems-considering-different-codes-during-engineering-projects
#19
J Patrick Banse
No abstract text is available yet for this article.
October 2015: Health Facilities Management
https://www.readbyqxmd.com/read/26629494/high-performance-solutions-and-data-for-nzebs-offices-located-in-warm-climates
#20
Paolo Maria Congedo, Cristina Baglivo, Ilaria Zacà, Delia D Agostino
This data article contains eleven tables supporting the research article entitled: Cost-Optimal Design For Nearly Zero Energy Office Buildings Located In Warm Climates [1]. The data explain the procedure of minimum energy performance requirements presented by the European Directive (EPBD) [2] to establish several variants of energy efficiency measures with the integration of renewable energy sources in order to reach nZEBs (nearly zero energy buildings) by 2020. This files include the application of comparative methodological framework and give the cost-optimal solutions for non-residential building located in Southern Italy...
December 2015: Data in Brief
keyword
keyword
118925
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"