نتایج جستجو برای: lead time reduction

تعداد نتایج: 2542746  

Journal: :Journal of Exposure Science & Environmental Epidemiology 2008

2009
Marie-Claude Bernard Virginia Costa Suzanne Joiret

key words: Lead corrosion, Raman spectroscopy, oxide reduction, organic acids, electrochemistry Even though kept in cultural institutions, artefacts can be subjected to accelerated deterioration due to high concentration of pollutants in closed spaces. Potentially harmful conditions have been evaluated by electrochemical reduction of corrosion products formed on metallic coupons which have been...

2012
Yien Ling Hii Joacim Rocklöv Stig Wall Lee Ching Ng Choon Siang Tang Nawi Ng

BACKGROUND A dengue early warning system aims to prevent a dengue outbreak by providing an accurate prediction of a rise in dengue cases and sufficient time to allow timely decisions and preventive measures to be taken by local authorities. This study seeks to identify the optimal lead time for warning of dengue cases in Singapore given the duration required by a local authority to curb an outb...

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