Results 81 to 90 of about 3,273 (205)

Lake Chad fisheries and its importance in the Green Revolution Programme [PDF]

open access: yes, 1983
Lake Chad fisheries contributes about 13% of all fish produced by the inland and coastal states of the nation and supports a large population of fishermen and allied workers.
Sagua, V.O.
core  

Macrophyte species, composition, abundance and diversity in relation to some environmental factors in Upper Awash River basin, Ethiopia

open access: yesInternational Journal of Science, Technology, Engineering and Mathematics
The study assessed the species composition, distribution, and diversity of macrophytes in the Upper Awash River during dry and wet seasons across seven sampling sites from October 2019 to April 2020.
Temesgen Tigab
doaj   +1 more source

An overview of methane emissions in constructed wetlands: how do plants influence methane flux during the wastewater treatment?

open access: yesJournal of Freshwater Ecology, 2019
Plants play an essential role in methane (CH4) production, transport and release processes of constructed wetlands but as yet there has been no consistent and clear consensus of their impacts on CH4 emissions.
Guangming Xu   +4 more
doaj   +1 more source

Morpho-Anatomical Analysis of the Rhizome in Species of Scleria Berg. (Cyperaceae) from Serra do Cipó (MG) [PDF]

open access: yes, 2009
Aspects related to the nature of stem thickening in monocotyledons have been the subject of many studies. Primary thickening has been attributed to the Primary Thickening Meristem (PTM).
LIMA, Vera Fatima Gomes Alves Pereira   +1 more
core   +3 more sources

Two new species of oribatid mites (Acari, Oribatida) from the Afrotropical region

open access: yesPersian Journal of Acarology
We describe two new species of oribatid mites (Oribatida) based on adult males—Gymnobodes schedeli sp. nov. (Carabodidae) collected from rotten wood and humus under a tree in Zambia and Galumna (Galumna) luisi sp. nov.
Sergey G. Ermilov   +2 more
doaj   +1 more source

Effect of different plant species in pilot constructed wetlands for wastewater reuse in agriculture

open access: yesJournal of Agricultural Engineering, 2013
In this paper the first results of an experiment carried out in Southern Italy (Sicily) on the evapotranspiration (ET) and removal in constructed wetlands with five plant species are presented.
Salvatore Barbagallo   +4 more
doaj   +1 more source

Evaluación de la remoción de materia orgánica en humedales artificiales de flujo subsuperficial a escala piloto como tratamiento de pulimento en las aguas residuales de frigovito S.A. [PDF]

open access: yes, 2018
Una de las problemáticas ambientales de mayor impacto y recurrencia es el vertimiento de aguas residuales con altas cargas contaminantes sobre el recurso hídrico.
Andrade Calvachi, Victor Alfredo   +1 more
core  

Evaluation the Susceptibility of Metformin Drug and Pollen grain of Typha domengensis (Typha) on Prevention of Damage in octa4 gene Which Induced by Mitomycin c in Some Organs in Male Albino Rats

open access: yesDiyala Journal of Medicine, 2019
Background: Living organisms are permanently exposed to internal and external factors that damage DNA. This damage, if not repaired, can lead to the mutation which cause verius diseases and cellular death.
Ghufran Mershoud Latef Alobaidy   +1 more
doaj   +2 more sources

Socio-economic impacts of the exploitation of the marshes of Kayanza province in the Northern Burundi: case of marshes of the average Ruvubu and its tributaries

open access: yesRUDN Journal of Agronomy and Animal Industries, 2019
The wetlands whose marshes are currently under pressure from the growing population require a consequent increase in production. The marshes are now agricultural reserves coveted because, firstly, the scarcity of arable land, of the other problems of ...
Gilbert Nijimbere   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy