Results 41 to 50 of about 4,897 (215)

Commodity risk assessment of Acer palmatum plants grafted on Acer davidii from China

open access: yesEFSA Journal, Volume 20, Issue 5, May 2022., 2022
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by 2‐year‐old bare rooted plants for planting of ...
EFSA Panel on Plant Health (PLH)   +28 more
wiley   +1 more source

COMPORTAMENTO SILVICULTURAL E DANOS EM MOGNO-AFRICANO (Khaya ivorensis A. Chev.) EM SISTEMA SILVIPASTORIL

open access: yesBIOFIX Scientific Journal, 2021
O objetivo deste trabalho foi avaliar o comportamento silvicultural e os danos nas cascas das árvores de mogno-africano (Khaya ivorensis A. Chev.) causados por bovinos em sistema silvipastoril, em Paranaíta/MT.
Rubens Marques Rondon Neto   +2 more
semanticscholar   +1 more source

Fatigue properties of wood at different load ratios tested at 50 Hz and 20 kHz Ermüdungseigenschaften von Holz bei unterschiedlichen Lastverhältnissen geprüft bei 50 Hz und 20 kHz

open access: yesMaterialwissenschaft und Werkstofftechnik, Volume 53, Issue 3, Page 344-354, March 2022., 2022
Fatigue properties of sycamore maple at different load ratios are investigated, and a Haigh diagram is plotted. In addition to servo‐hydraulic testing at 50 Hz, the ultrasonic fatigue testing technique – operating at 20 kHz under tension‐compression loading – is for the first time employed to investigate the fatigue properties of wood.
B.M. Schönbauer   +6 more
wiley   +1 more source

Des confusions entre espèces préjudiciables à la gestion durable des essences forestières : l'exemple des acajous d'Afrique (Khaya, Meliaceae) [PDF]

open access: yes, 2019
Les espèces du genre Khaya procurent l'un des bois les plus prisés du continent africain. Elles sont commercialisées sous l'appellation " acajou d'Afrique " depuis environ deux siècles.
Dipelet Bouka, Gaël Ulrich   +5 more
core   +1 more source

Commodity risk assessment of bonsai plants from China consisting of Pinus parviflora grafted on Pinus thunbergii

open access: yesEFSA Journal, Volume 20, Issue 2, February 2022., 2022
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver a scientific opinion on the risk posed by bonsai plants from China consisting of Pinus parviflora grafted on Pinus thunbergii taking into account the available scientific information, including the technical information provided by China.
EFSA Panel on Plant Health (PLH)   +28 more
wiley   +1 more source

Cancro em mogno africano no estado do Pará

open access: yesPesquisa Florestal Brasileira, 2013
Sintomas de cancro foram observados em plantios de mogno africano, no município de Dom Eliseu, Pará. Os fungos associados aos tecidos sintomáticos foram identificados como Lasiodiplodia theobromae e Fusarium subglutinans.
Célia Regina Tremacoldi   +3 more
doaj   +3 more sources

Environmental and anthropogenic effects on the nesting patterns of Nigeria–Cameroon chimpanzees in North‐West Cameroon

open access: yesAmerican Journal of Primatology, Volume 83, Issue 9, September 2021., 2021
Spatial representation of preferred chimpanzee nesting sites and trees at Kom‐Wum Forest Reserve, Cameroon. Abstract Environmental conditions and human activity influence the selection of nest sites by chimpanzees and may have serious conservation implications.
Chefor Fotang   +8 more
wiley   +1 more source

Responses of tropical tree seedlings in the forest–savanna boundary to combined effects of grass competition and fire

open access: yesBiotropica, Volume 53, Issue 4, Page 1082-1095, July 2021., 2021
Grass competition could deferentially affect forest and savanna tree seedling growth, with implications for seedling survival in pyrogenic savannas. We tested hypotheses related to these possible differences and found that competition decreased tree seedling growth and root carbohydrate reserves for both forest and savanna seedlings. A history of grass
Hamza Issifu   +9 more
wiley   +1 more source

Evaluation of Briquettes Produced from Four Selected Sawdusts Combination at Quaternary Levels [PDF]

open access: yesPhysics Access, 2022
The objective of this paper is to evaluate briquettes produced through quaternary level combination of four types of common sawdusts from major wood sources.
Abdulkarim Mayere, Aaron L Shekarau
doaj   +1 more source

Potential of a Khaya ivorensis – Alstonia boonei extract combination as antimalarial prophylactic remedy [PDF]

open access: yesJournal of Ethnopharmacology, 2011
The decoction of the combined stem barks of Khaya ivorensis A. Chev. (Meliaceae) and Alstonia boonei De Wild (Apocynaceae) has a history of use in traditional medicine of central Cameroon for malaria treatment but also for the prevention of the disease.The purpose of this investigation was to determine the antiplasmodial activity of Khaya ivorensis (K)
Roselyne Nzangue Tepongning   +9 more
openaire   +5 more sources

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