… far more elemental nitrogen to change into reactive forms, probably at a rate ten times higher than in the pre-industrial era. The major conversion processes are …

… the national notification system | Air quality during the German lockdown in springtime 2020 | Monitoring of SARS-CoV-2 pandemic viruses via wastewater analyses | … radiation for disinfection purposes | The BfR-Corona-Monitor: Risk perception in times of COVID-19 +++ OTHER TOPICS: The assessment classes and threshold values of …

… wind, temperature, cloud cover, and precipitation over a certain period of time and larger area. last update on 17.09.2009 From our own experience, gathered … that climate varies from region to region. The fact that climate also changes over time is evident from knowledge about the last ice age which covered large parts of …

… (e.g. blood, urine) is derived according to a defined statistical method from a series of measuring results. Samples to be used for this purpose have to be … (e.g. blood, urine) is derived according to a defined statistical method from a series of measuring results. Samples to be used for this purpose have to be …

… German Environmental Survey 2003-2006 for Children, GerES IV For the first time the UBA investigated effects of environmental influences exclusively on …

… air hygiene. The members of IRK are appointed for a period of three years at a time. They come predominantly from scientific institutions and competent state … air hygiene. The members of IRK are appointed for a period of three years at a time. They come predominantly from scientific institutions and competent state …

… programmes and studies in its biannual ‘Newsletter’, while the ‘Air Hygiene Report’ series has been established to report in depth on specific investigations. The WHO … programmes and studies in its biannual ‘Newsletter’, while the ‘Air Hygiene Report’ series has been established to report in depth on specific investigations. The WHO …

… on 14.06.2017 Trends One of the main goals of GerES is to document a trend in time of population exposure. Data from the different surveys have to be made … to the detection limit, the 95th percentiles should be used to evaluate a trend in time. The 95th percentiles have decreased in both cases. A decrease could be …

… Building Syndrome (SBS) Non-specific afflictions experienced by people who spend time in buildings are called SBS Source: Tiberius Gracchus / Fotolia.com Scientists … in which workers mainly in new office buildings feel ill after extended periods of time at the workplace or at the end of the working day. These complaints vanish when …