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Skyba M.,University of P.J. Safarik | Urbanova M.,University of P.J. Safarik | Kapchina-Toteva V.,Sofia University | Kosuth J.,University of P.J. Safarik | And 2 more authors.
Cryo-Letters | Year: 2010

Hypericum perforatum L. in vitro cultured shoot tips were characterised at the physiological, biochemical and molecular levels following recovery from cryogenic treatment using the plant vitrification solutions PVS2 and PVS3. This comparative study revealed an increase in recovery and regrowth of explants cryoprotected with PVS3. Among the physiological markers only lipid peroxidation in the regenerants treated with PVS2 significantly increased indicating membrane damage. Genotype-specific interactions were found in most characteristics studied, with some variation detected within control and cryopreserved samples. Analyses of metabolite biosynthesis and genetic stability showed no significant differences in hypericin content, RAPD and minisatellite amplification profiles between PVS2 - and PVS3-treated explants. This study demonstrates and discusses the criteria selective for PVS3 to improve the cryopreservation of H, perforatum L. © CryoLetters.


News Article | February 23, 2016
Site: www.techtimes.com

Millions of people face the detrimental effects of climate change and air pollution on their health as it is now dubbed the fourth leading cause of death worldwide. Research Scientists predict that if the United States would cut carbon emissions, it may save about 295,000 lives by 2030. Researchers from Duke University and the NASA Goddard Institute for Space Studies said if the carbon emissions will be reduced enough to avoid a 2-degree Celsius increase in global warming, it could prevent premature deaths in the coming years. "Many people view climate change as a future problem, but our analysis shows that reducing emissions that cause warming — many of which also contribute to air pollution — could benefit public health here and now," said Drew T. Shindell, from Duke's Nicholas School of the Environment. Reducing carbon emissions could also save about $250 billion worth of health benefits because of overall improved public health of residents. This means that the large amount of savings would exceed the cost of implementing better transportation and clean energy programs. "Near-term national benefits are valued at ~$250 billion (140 billion to 1,050 billion) per year, which is likely to exceed implementation costs. Including longer-term, worldwide climate impacts, benefits roughly quintuple, becoming ~5-10 times larger than estimated implementation costs," the researchers concluded and published in the journal Nature. "Achieving the benefits, however, would require both larger and broader emissions reductions than those in current legislation or regulations," they added. By 2030, an estimated 175,000 premature deaths could be prevented while clean transportation can also prevent about 120,000 premature deaths, annually thereafter. Carbon and fuel emissions contribute not only to the growing problem of climate change, but also the increasing amount of particulate pollution matter in the air. Small pieces of these pollutants may pose serious health problems such as respiratory problems, cardiovascular disorders and premature death. Previous studies have linked air pollution to many diseases. The inhalation of polluted air could aggravate the condition of people already suffering from respiratory diseases, such as asthma or chronic obstructive respiratory disorder (COPD). Currently, it is estimated that air pollution kills 3 million people each year and by 2050, the figure could increase two fold.


News Article | March 25, 2016
Site: cleantechnica.com

The top clean tech jobs for this week include listings for inside sales for a building performance instrument company, an energy storage research scientist, an energy storage project manager, a systems engineer for a self-driving car initiative, and more. As part of our collaboration with other projects within the Important Media network, we’ve partnered with our sister site Green Job Post to bring you a weekly summary of the top clean tech job listings. We’ve also set up a dedicated clean tech jobs newsletter to deliver these weekly listings to your inbox, and there are a number of other green job listings newsletters available (see below), including one for all new job listings. The top clean tech job listings for the week of March 25th, 2016: Inside Technical Sales for Blower Doors & Duct Testers We are a dynamic, leading manufacturer of instrumentation, training and software that is used in analyzing building performance of a wide range of buildings from houses to high-rises in 60 countries. About you: You will be required to provide professional, timely and knowledgeable customer service while optimizing sales opportunities for a variety of our products. You must be willing to complete training to learn how to use our equipment so you can apply that experience to the sales process. You already have considerable experience in a sales position, preferably in a technical environment. Research Scientists, Energy Storage: IBM Energy Storage Science and Solutions group at IBM Research-Almaden is looking for long-term supplemental research scientists (Post-Doctoral Researchers) who will perform cutting edge research on next generation energy storage projects. The successful candidates will perform hands-on experiments and data analysis on energy storage devices including metal-air battery systems. Backgrounds on electrochemistry and/or metal-air batteries are plus but not required. The candidates must have proven written and oral communication skills with the ability to focus on project metrics. The candidate will interact with a large, technically diverse, distributed team across IBM and external partners. Project Manager/Director, Energy Storage: Invenergy Invenergy drives innovation in energy. Powered by decades of entrepreneurial experience and unparalleled execution, we solve the energy challenges facing our customers and communities. We provide power generation and storage solutions at scale around the world to create a cleaner energy future. As an Energy Storage Project Manager/Director, you will manage utility scale energy storage projects throughout the United States. Last year, Invenergy won Energy Storage North America’s 2015 Innovation Award for Centralized Storage. Systems Engineer, Motion Control (Self-Driving Car): Google X The self-driving car project aims to improve people’s lives by transforming mobility and making it easier and safer for everyone to get around, regardless of their ability to drive. So far, we’ve self-driven over 1 million miles and are currently out on the streets of Mountain View, California and Austin, Texas. Google’s self-driving car program hires systems engineers to ensure we are solving the right problems during the design phase, and to answer the questions “did we build this right” and “did we build the right thing” during the test and evaluation phase. Get green job notifications in your industry! Subscribe to:   Get CleanTechnica’s 1st (completely free) electric car report → “Electric Cars: What Early Adopters & First Followers Want.”   Come attend CleanTechnica’s 1st “Cleantech Revolution Tour” event → in Berlin, Germany, April 9–10.   Keep up to date with all the hottest cleantech news by subscribing to our (free) cleantech newsletter, or keep an eye on sector-specific news by getting our (also free) solar energy newsletter, electric vehicle newsletter, or wind energy newsletter.  


Elustondo D.,Research Scientists | Oliveira L.,Research Scientists | Ananias R.A.,University of Bio Bio
Drying Technology | Year: 2013

This article explores the possibility of using a simplified but intuitive method to quickly assess the potential benefits of sorting lumber before industrial kiln drying. The method consists of using scatter plots to visualize the probability of obtaining a certain drying result, such as final moisture content, as a function of a property of the green lumber that can be measured in practice. The method was first validated with four drying runs of 116 mm × 52 mm hemlock lumber: one run contained unsorted lumber and the others contained the same type of lumber but sorted into low, medium, and high groups depending on the electrical capacitance of the green wood. After validation, the scatter plots were used to assess the benefits of two typical industrial sorting strategies, namely, sorting by electric capacitance and sorting by weight. It was found that both methods have the potential to increase lumber production and reduce over dried lumber in approximately the same magnitude. For a typical industrial schedule, sorting into three groups reduced the drying time by approximately 10% and over dried lumber to practically zero. © 2013 Copyright Taylor and Francis Group, LLC.


Johnston J.W.,University of Abertay Dundee | Johnston J.W.,The New Zealand Institute for Plant and Food Research Ltd | Pimbley I.,University of Abertay Dundee | Harding K.,Research Scientists | Benson E.E.,Research Scientists
Cryo-Letters | Year: 2010

An HPLC method has been optimised to measure 8-hydroxy-2'-deoxyguanosine (8OHdG) in DNA and germplasm with the objective of using the adduct as a marker of cryostorage stability. The encapsulation-dehydration cryopreservation protocol was adapted as a model system for assessing the formation of 8OHdG from alginate-encapsulated DNA of calf thymus (CT) and currant species (Ribes) exposed to temperatures of -20 and -196°C. The presence of H 2O2 exacerbated the formation of 8OHdG in encapsulated CT and Ribes DNA. Production of the oxidized adduct was lower in the plant system. A reduction in residual water following osmotic dehydration and evaporative desiccation was associated with reduced adduct formation in encapsulated DNA. No significant differences in 8OHdG adduct formation were observed in plants regenerated from cryopreserved Ribes meristems derived from genotypes known to have differential tolerance to cryopreservation. © CryoLetters.

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