Results 111 to 120 of about 951,010 (346)

Size‐based regulation and water quality: Evidence from the Iowa hog industry

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract The growing prevalence of animal feeding operations (AFOs) in the United States raises concerns among the public and regulators about their impact on local environmental quality. By linking historical regulatory records of AFOs in Iowa to downstream surface water pollution monitors, this paper studies the effects of the 2003 Clean Water Act ...
Chen‐Ti Chen   +3 more
wiley   +1 more source

New Jersey Ferns and Fern Allies.

open access: yesBulletin of the Torrey Botanical Club, 1993
James H. Peck   +2 more
openaire   +2 more sources

Arsenic-induced response in roots of arsenic-hyperaccumulator fern and soil enzymatic activity changes

open access: gold, 2022
Veronika Zemanová   +6 more
openalex   +1 more source

EAACI Guidelines on the Importance of Green Space in Urban Environments for Allergy and Asthma Prevention

open access: yesAllergy, EarlyView.
ABSTRACT The allergy and asthma epidemic in urban societies following World War II is mostly caused by changes in the environment, diet and lifestyle. Disconnection of urban populations from the wider environment has reduced the protective factors building up immunological resilience.
Tari Haahtela   +21 more
wiley   +1 more source

Quality from Kent: Preliminary results from the analysis of fifth‐ to seventh‐century silver alloys

open access: yesArchaeometry, EarlyView.
Abstract This paper explores early results from the chemical and lead isotope analysis of 30 silver‐alloy objects from southeast England dating between the fifth and seventh centuries CE, presenting limited aspects of the three main analyses that were conducted. First, a comparison of the results gained from surface x‐ray fluorescence (pXRF) values and
Toby F. Martin, Matthew J. Ponting
wiley   +1 more source

Fern

open access: yes, 1910
Source: Alfred Lichtenstein: Gesammelte Gedichte. Auf Grund der handschriftlichen Gedichthefte Alfred Lichtensteins kritisch herausgegeben von Klaus Kanzog, Zürich: Arche, 1962.
openaire   +2 more sources

Multiple indicators record human adaptations to climatic change during the Middle Holocene at the Wanbei site in the middle and lower Huai River valley, China

open access: yesBoreas, EarlyView.
The archaeological sediment sequences analysis from the Wanbei site reveals a predominantly warm and humid climate with a brief cooling phase between 5600 and 5400 a BP, during the Middle Holocene in the middle and lower Huai River valley. Despite the cooling trend, rice remained the dominant crop in mixed farming, while the proportion of millet ...
Weixin Tian   +9 more
wiley   +1 more source

Coastal evolution, environmental change and carbon storage in the Thung Prong Thong Mangrove, eastern Gulf of Thailand

open access: yesBoreas, EarlyView.
Palaeoenvironmental records along the eastern coast of Thailand remain sparse, with only a few studies attempting to reconstruct past climatic and environmental conditions. However, additional palaeoenvironmental, palaeoclimatic and sea‐level records are needed to improve our understanding of coastal evolution and local environmental changes.
Sakonvan Chawchai   +7 more
wiley   +1 more source

Una especie nueva de Dennstaedtia (Filicales: Dennstaedtiaceae) para México

open access: yesRevista de Biología Tropical, 2002
Dennstaedtia gracilis A. Rojas et Tejero (Dennstaedtiaceae) es aquí descrita e ilustrada como una especie nueva endémica de México. Pertenece al grupo de especies que presentan un ala dorsal en la costa de las pínnulas pero difiere por la combinación de ...
Alexander Fco. Rojas-Alvarado   +1 more
doaj  

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