Figueiro M.G.,Rensselaer Polytechnic Institute |
Steverson B.,The Green Office |
Heerwagen J.,The Green Office |
Kampschroer K.,The Green Office |
And 4 more authors.
Sleep Health | Year: 2017
Background By affecting the internal timing mechanisms of the brain, light regulates human physiology and behavior, perhaps most notably the sleep–wake cycle. Humans spend over 90% of their waking hours indoors, yet light in the built environment is not designed to affect circadian rhythms. Objective Using a device calibrated to measure light that is effective for the circadian system (circadian-effective light), collect personal light exposures in office workers and relate them to their sleep and mood. Setting The research was conducted in 5 buildings managed by the US General Services Administration. Participants This study recruited 109 participants (69 females), of whom 81 (54 females) participated in both winter and summer. Measurements Self-reported measures of mood and sleep, and objective measures of circadian-effective light and activity rhythms were collected for 7 consecutive days. Results Compared to office workers receiving low levels of circadian-effective light in the morning, receiving high levels in the morning is associated with reduced sleep onset latency (especially in winter), increased phasor magnitudes (a measure of circadian entrainment), and increased sleep quality. High levels of circadian-effective light during the entire day are also associated with increased phasor magnitudes, reduced depression, and increased sleep quality. Conclusions The present study is the first to measure personal light exposures in office workers using a calibrated device that measures circadian-effective light and relate those light measures to mood, stress, and sleep. The study's results underscore the importance of daytime light exposures for sleep health. © 2017 National Sleep Foundation.
Ohzuku T.,Osaka City University |
Nagayama M.,Osaka City University |
Nagayama M.,The Green Office |
Tsuji K.,Osaka City University |
Ariyoshi K.,Osaka City University
Journal of Materials Chemistry | Year: 2011
Lithium nickel manganese oxides Li[NixLi (1/3-2x/3)Mn(2/3-x/3)]O2 (x = 1/2, 2/7, and 1/5) are prepared and characterized by XRD and FT-IR, and the samples are examined in non-aqueous lithium cells at room temperature and 55 °C. Among these materials LiNi1/2Mn1/2O2 (x = 1/2) shows the highest operating voltage and the smallest polarization with a rechargeable capacity of ca. 230 mA h g-1 and Li[Li1/5Ni 1/5Mn3/5]O2 (x = 1/5) shows the lowest operating voltage and the largest polarization with a rechargeable capacity more than 300 mA h g-1. Extraordinarily large rechargeable capacity of Li[Li1/5Ni1/5Mn3/5]O2 together with an anomalously long voltage plateau at 4.5 V only observed at first charging process is examined by window-opening charge and discharge, continuous charge and discharge combined with differential chronopotentiometry at room temperature and at 55 °C, and possible mechanisms are discussed in terms of lithium insertion scheme. © 2010 The Royal Society of Chemistry.
Morrison A.R.,The Green Office
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA | Year: 2011
About 13 billion gal/yr of biofuel are currently produced and used in the US, and the Department of Agriculture anticipates that over 500 new biorefineries or biofuel facilities will be needed by the year 2022 to meet that target. Most of these new facilities will require an air construction permit, will be subject to federal emission standards, and many of them will likely trigger federal New Source Review permitting. Some significant issues to be considered under an air construction permit for a biofuel facility, including those facilities that also produce electricity, are discussed. The federal standards and requirements that could apply, and additional state and even local requirements that should be considered and that could apply as well are presented. This is an abstract of a paper presented at the 104th AWMA Annual Conference and Exhibition 2011 (Orlando, FL 6/21-24/2011).
Sankaran N.,The Green Office
Studies in History and Philosophy of Science Part C :Studies in History and Philosophy of Biological and Biomedical Sciences | Year: 2014
The discovery that cancer may be caused by viruses occurred in the early twentieth century, a time when the very concept of viruses as we understand it today was in a considerable state of flux. Although certain features were agreed upon, viruses, more commonly referred to as 'filterable viruses' were not considered much different from other microbes such as bacteria except for their extremely small size, which rendered them ultramicroscopic and filterable. For a long time, in fact, viruses were defined rather by what they were not and what they could not do, rather than any known properties that set them apart from other microbes. Consequently when Peyton Rous suggested in 1912 that the causative agent of a transmissible sarcoma tumor of chickens was a virus, the medical research community was reluctant to accept his assessment on the grounds that cancer was not infectious and was caused by a physiological change within the cells. This difference in the bacteriological and physiological styles of thinking appears to have been prevalent in the wider research community, for when in 1917 Felix d'Herelle suggested that a transmissible lysis in bacteria, which he called bacteriophagy, was caused by a virus, his ideas were also opposed on similar grounds. It was not until the 1950s when when André Lwoff explained the phenomenon of lysogeny through his prophage hypothesis that the viral identities of the sarcoma-inducing agent and the bacteriophages were accepted. This paper examines the trajectories of the curiously parallel histories of the cancer viruses and highlights the similarities and differences between the ways in which prevailing ideas about the nature of viruses, heredity and infection drove researchers from disparate disciplines and geographic locations to develop their ideas and achieve some consensus about the nature of cancer viruses and bacteriophages. © 2014 Elsevier Ltd. All rights reserved.
Joe Y.H.,Yonsei University |
Ju W.,Doosan Heavy Industries and Construction |
Park J.H.,University of Iowa |
Yoon Y.H.,The Green Office |
Hwang J.,Yonsei University
Aerosol and Air Quality Research | Year: 2013
This study investigated the correlation between the antibacterial ability of silver nanoparticle air filters with the related dust loading. In addition, a decay equation with which the life cycle of the antibacterial air filters could be predicted was developed. Samples of a HEPA (High Efficiency Particulate Air) filter were coated with an antibacterial agent, silver nanoparticles, which were synthesized via an atmospheric spark discharge method and deposited onto the filters using forced convection flow. A specific amount of dust particles was then blown onto each filter sample. Two kinds of bacteria, Escherichia coli (E. coli), representing Gram-negative bacteria, and Staphylococcus epidermidis (S. epidermidis), representing Gram-positive bacteria, were used in order to examine the antibacterial abilities of the filter samples. The results of the disc diffusion method showed that the dust loading adversely affected the antibacterial efficacy. However, the silver nanoparticle mass density on a filter with a certain amount of dust does increase the antibacterial ability to a certain extent. Finally, decay equations for the decline rates of the antibacterial ability against E. coli and S. epidermidis were obtained with a dimensionless pressure drop across the antibacterial filter samples. © Taiwan Association for Aerosol Research.
Rarieya M.,The Green Office |
Fortun K.,Rensselaer Polytechnic Institute
Sustainability Science | Year: 2010
This article examines challenges to food security in areas especially vulnerable to the effects of climate variability and change, and the potential contribution of seasonal climate forecasting. Drawing on long-term study of the way environmental information is developed and circulates, and on recent fieldwork in Western Kenya, the article describes how climate variability exacerbates food insecurity; the kinds of climate information that are now being developed; and the kinds of technologies, organizations, and expertise that will be needed if new forms of climate information are to benefit vulnerable populations. Findings indicate that new forms of expertise need to be developed at all scales, and that linkage among stakeholders and between organizations functioning at different scales will be a considerable challenge. © 2009 Integrated Research System for Sustainability Science, United Nations University, and Springer.
The Green Office | Date: 2015-09-16
Baskets of common metals; general purpose metal storage containers; metal containers for the transportation of goods; boxes of common metal. Packaging containers of plastic. Dustbins; baskets for domestic use not of metal and collectors in the nature of general purpose storage bins for household use in selective sorting; baskets, for domestic use, not of precious metal; hand operated cleaning instruments, namely, sponge, brush, scraper, broom and towel.
Yoon S.J.,Korea Institute of Energy Research |
Son Y.-I.,The Green Office |
Kim Y.-K.,Korea Institute of Energy Research |
Lee J.-G.,Korea Institute of Energy Research
Renewable Energy | Year: 2012
In the present study, gasification of rice husk and rice husk pellet was performed in a bench-scale downdraft fixed-bed gasifier. Gasification was conducted in a temperature range of 600-850°C, fuel feeding rate of 40-60kg/h and gasification agent, air, feeding rate of 50-75Nm 3/h. From the results, synthetic gas heating value and cold gas efficiency of more than 1300kcal/Nm 3 and 70% were achieved, respectively. The heating value of synthetic gas and cold gas efficiency from rice husk pellet gasification shows higher value than that of rice husk gasification. To make power generation, the CD800L reciprocating engine designed to basically use LPG fuel was conducted by supplying synthetic gas produced from rice husk pellet gasification. It was confirmed that stable power generation of 10kW was achieved. © 2011 Elsevier Ltd.
News Article | May 5, 2011
Before you can open your doors for business, you need an office. Stocking your office with needed supplies is a great opportunity to show your green side and make sustainable choices. From furnishings to paper clips, there are eco-friendly options out there for every office need. Whether you’re working from home or from a downtown high-rise, you can conserve paper, reduce energy use, and produce less waste by keeping the environment in mind for all your office purchases. In this article, I’ll share ideas for stocking your green office and sources of green office products. After trying to reduce your company’s use of paper as much as possible, it’s still inevitable that you’ll need paper to keep on hand at the office. Thankfully there are many green paper options available that don’t involve cutting down a single tree. Even your local office or stationery store probably carries recycled paper. Don’t forget to look for recycled or tree-free envelopes, notebooks, file folders, and even post-it notes as well as your standard copy paper. There’s just no excuse for using virgin paper when there are so many tree-friendly types available. You can order bulk supplies online from many retailers as well. My favorite source for everything a green office might need is The Green Office. In addition to extensive paper choices, they offer all kinds of green office products from furniture to phones to ink. When it comes to furnishing a new office, it’s a good idea to start with what you already have. Do you have any old furniture collecting dust that could be re-purposed into a desk or filing cabinet? It’s economical and eco-friendly to buy used whenever possible, so hit up your local yard sales! A coat of low-VOC paint can turn any old piece of furniture into a new fixture color-coordinated to your office. A DIY project can also be a great way to make your office a little more “you.” If DIY is not your thing or you’re just not finding what you need second-hand, there are many green furniture companies to fit your office needs. Check out The Green Office’s furniture section, IKEA (many of their products are surprisingly green), or modular, 95% recycled pieces designed by Ecowork. And while it may look professional, I don’t recommend a plush leather office chair. There’s some pretty nasty chemicals that go into making leather, not to mention a considerable amount of cruelty. For ideas on green building materials and inspiration for the interior design of your new office, head on over to Green Building Elements. Every office needs to stay clean, and it’s easy to be green and clean with sustainable cleaning products. Seventh Generation and Ecover make a wide variety of cleaners for any purpose, but it’s even easier (and much cheaper) to make your own cleaning products. Green cleaners help maintain a healthy indoor air quality, which is better for you and the planet. Another way to green your office cleaning is to use re-usable rather than disposable cleaning products. Instead of one-use wipes or dust cloths, keep a stock of organic cotton cloths or even old rags for wiping counters and dusting. They can be washed and re-used over and over, saving landfill space and trees. When it comes to office supplies, there’s no shortage of green choices. And they may be as close as your nearest office supply store. Just make sure to look for a high percentage of post-consumer content in recycled materials, or the use of rapidly renewable materials such as bamboo in office furniture. And if the store doesn’t have many eco-friendly options available, bring it up and let them know that discerning customers demand greener products. This article is the eleventh in a series called Green Dreams following my journey starting a green design business. You can learn along with me: read the series introduction, see some green business resources, get inspired, learn how to write a business plan, find out how to name your business, learn why sustainability should be a part of your planning from the beginning, avoid commuting by working from home, build green business practices into your daily workflow, work towards a paperless office, and get certified green! Stay tuned for more each week on starting a green business! Megan Prusynski I grew up camping and hiking in the woods of Idaho, leading to a connection with and deep respect for nature. I recently moved to the Mendocino coast in Northern California, where I was happy to find not only beautiful redwoods and beaches, but a high level of green consciousness. I am a graphic and web designer who focuses on making the world a better place through sustainable design and communication. I specialize in green design solutions for small businesses, non-profits, and activist organizations. When I'm not designing, I'm hiking, camping, traveling, taking pictures, blogging, and spending time with my boyfriend and our "fur-kids." You can find out more about me on my sites and blogs: my personal site, volksvegan.org, or unplug magazine.