Results 61 to 70 of about 8,986 (214)

RECENT ADVANCES IN KHAT RESEARCH [PDF]

open access: yes, 2017
Khat leaves are widely used as a stimulant in East Africa and the Arabian Peninsula and the effect of the material was formerly believed to be due to its content of norpseudoephed-rine. Recently, however, a new alkaloid, cathinone, has been discovered in
KALIX, PETER
core  

Nitrogen fertilizer rates and supplementary irrigation effects on maize yield in Eastern Ethiopia

open access: yesAgrosystems, Geosciences &Environment, Volume 8, Issue 3, September 2025.
Abstract Maize (Zea mays L.) is an important food and nutritional security crop widely grown in Ethiopia. However, the crop yield is low due to low soil fertility, and erratic rainfall that results in moisture stress during the primary growing season.
Waktole Mosisa   +4 more
wiley   +1 more source

Commentary on: Attafi IM, Albeishy MY, Oraiby ME, Khardali IA, Shaikhain GA, Fageeh MM. Postmortem Distribution of Cathinone and Cathine in Human Biological Specimens in a Case of Death Associated wit

open access: yesArab Journal of Forensic Sciences & Forensic Medicine, 2019
The interpretation of post-mortem human tissue toxicology levels may be affected by the sampling site chosen. It is important to bear this in mind when looking at the psychoactive constituents of khat (Catha edulis Forsk) that have been consumed and have
John M. Corkery   +2 more
doaj   +1 more source

Oral hygiene and periodontal health status among khat chewers. A case-control study [PDF]

open access: yes, 2017
Habitual khat chewing is a widespread male habit in Southern Arabia and East Africa. The aim of this study was to assess the effect of Khat chewing on oral hygiene and periodontal health status among Yemeni male khat chewers.
Al-Maweri, Sadeq A., AlAkhali, Mohammed
core   +1 more source

Notiz zu Catha edulis [PDF]

open access: yesNotizblatt des Königl. botanischen Gartens und Museums zu Berlin, 1904
n ...
openaire   +1 more source

Teratogenic effects of Khat (Catha edulis) in New Zealand rabbit

open access: yesJournal of Advanced Veterinary and Animal Research, 2018
Objective: The present study was carried out to evaluate morphometric and histopathological abnormalities during organogenesis in liver, kidney, brain, spinal cord, heart, Lung, digestive tract and spleen in rabbit feti in response to oral administration
Aref Saleh Abdul-Mughni   +3 more
doaj   +1 more source

Qualitative ultrastructural analysis of the submandibular salivary glands after administration of khat: in vivo study

open access: yesBMC Research Notes, 2021
Objective Khat (Catha edulis Forssk) plant has been widely chewed for its psychostimulatory effects in the African and Arabian Peninsula, particularly in Yemen.
Gamilah Al-Qadhi, Rabab Mubarak
doaj   +1 more source

Trades in complex Hadamard matrices [PDF]

open access: yes, 2015
A trade in a complex Hadamard matrix is a set of entries which can be changed to obtain a different complex Hadamard matrix. We show that in a real Hadamard matrix of order $n$ all trades contain at least $n$ entries.
E.J. Billington   +5 more
core   +2 more sources

Seasonal and Landscape‐Driven Variations in Forage Resources of Apis mellifera scutellata: Implications for Pollination Sustainability and Colony Health in Taita Taveta County, Kenya

open access: yesEcology and Evolution, Volume 15, Issue 7, July 2025.
We used DNA metabarcoding to identify nectar and pollen plant species supporting honey bee nutrition across different landscapes and seasons in Taita Taveta County, Kenya. Forage availability was influenced by landscape and season, with exotic species (67%) dominating over native ones (33%), raising concerns about colony health and how the occurrence ...
Mary Chege   +4 more
wiley   +1 more source

Complete chloroplast genome of the wild-type Monimopetalum chinense (Celastraceae)

open access: yesMitochondrial DNA. Part B. Resources, 2019
Monimopetalum chinense (Celastraceae), belonging to the monotypic genus, is an endangered species endemic to eastern China. The complete chloroplast (cp) genome sequence of M. chinense was determined using next-generation sequencing technology.
Jian Pan   +7 more
doaj   +1 more source

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