Results 51 to 60 of about 140,816 (312)

Investigation and analysis of climate change factors in Caspian Zone forests for last fifty years [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2008
Iran is located in the North Temperate Zone from 25 to 40 degrees latitude and 44 to 63 degrees longitude, with a total area of approximately 1,650,000 Km2. A 50% of total lands area is covered with high mountain ranges.
Mostafa Jafari
doaj  

Allelopathy as a Strategy for Biological Invasion: Calotropis procera and Its Impact on Plant Succession

open access: yesChemistry &Biodiversity, EarlyView.
Stages of the study on the allelopathic potential of Calotropis procera (Aiton) W. T. Aiton. The image shows the collection of plant material, the decomposition of organic matter, the identification of bioactive compounds, and the effects on the germination of Handroanthus impetiginosus (Mart. ex DC.) Mattos.
Bruno Melo de Alcântara   +7 more
wiley   +1 more source

Characterizing Aircraft Exhaust Emissions and Impact Factors at Tianjin Binhai International Airport via Open-Path Fourier-Transform Infrared Spectrometer

open access: yesToxics
The growth of the civil aviation industry has raised concerns about the impact of airport emissions on human health and the environment. The aim of this study was to quantify the emissions of sulfur dioxide (SO2), nitrogen oxides (NOX), and carbon ...
Jingbo Zhao   +7 more
doaj   +1 more source

In commemoration of Alfred Wegener (1880-1930), 120 years after his birth and 70 years after his death

open access: yesMeteorologische Zeitschrift, 2000
Wegener made an astounding scientific contribution to many different subjects. His books became wellknown textbooks as well as a basis for weighty scientific discussions.
Cornelia Lüdecke
doaj   +1 more source

Seasonality Affects the Phenolic Composition and Erythroprotective Activity of Ora‐Pro‐Nobis (Pereskia aculeata) Leaves

open access: yesChemistry &Biodiversity, EarlyView.
ABSTRACT Ora‐pro‐nobis (OPN) is a food plant with polyphenol‐rich leaves. However, the influence of seasonality on their quantitative phenolic composition and how it impacts their bioactivities is unknown. OPN leaves were harvested throughout 12 months, and their individual phenolic content, antioxidant activity, and erythroprotection were assessed ...
Thiago Mendanha Cruz   +3 more
wiley   +1 more source

Short-term energy and meteorological impacts on Thanksgiving CO2 in Salt Lake City

open access: yesEnvironmental Research Communications
Long-term, high-frequency atmospheric CO _2 measurements at multiple sites in Salt Lake City (SLC), Utah, reveal that annual and monthly CO _2 variability aligns with a priori estimates of emissions from anthropogenic and biological sources.
Ju-Mee Ryoo   +2 more
doaj   +1 more source

Non‐stationary forest responses to hotter droughts: a temporal perspective considering the role of past legacies

open access: yesEcography, EarlyView.
Global change is altering forests worldwide, with multiple consequences for ecosystem functioning. Temporal changes in climate, and extreme, compounded weather events like hotter droughts are affecting the demography, composition and function of forests, leading to a highly uncertain future.
Xavier Serra‐Maluquer   +3 more
wiley   +1 more source

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