Results 81 to 90 of about 882,994 (288)

Prévalence de la surcharge pondérale (surpoids et obésité) en milieu scolaire urbain à Kamsar République de Guinée. [Prevalence of overweight and obesity in urban schools in Kamsar Republic of Guinea]

open access: yesNutrition & Santé, 2020
Introduction. Overweight is a consequence of nutritional transitions, seden-tarity lifestyle, and poverty. Objective. To determine the prevalence of overweight in schools. Population and methods.
Ibrahima K. BARRY   +4 more
doaj   +1 more source

How Does Cultural and Colonial Heritage Affect Optimal Branding Strategies? Evidence From the Rice Sector in Senegal

open access: yesAgribusiness, EarlyView.
ABSTRACT Africa's cultural and colonial heritage has profoundly segmented rice markets. Whereas in ancient centers of rice domestication, consumers maintained preferences for local rice consistent with their cultural heritage, preferences have shifted toward imported Asian rice in coastal areas around seaports, due to prior exposure to colonial import ...
Kofi Britwum, Matty Demont
wiley   +1 more source

Prevalence of sexual intercourse and risk factors among adolescents in schools in Guinea

open access: yesJournal of Public Health in Africa
Background: Adolescent sexual intercourse in schools is a common phenomenon. Aim: This study analysed the prevalence and contributing factors of sexual intercourse among adolescents attending school in Guinea. Setting: This study was conducted in Guinea (
Sidikiba Sidibé   +11 more
doaj   +1 more source

Bridging the Gap: Integrating Energy Management with Moisture‐Electric Energy Harvesting

open access: yesAdvanced Physics Research, EarlyView.
This review explores energy management strategies that have been successfully applied in other energy harvesting systems, with the aim of adapting such strategies for MEG applications. Through analysis, learning, and adaptation of these existing systems, it is possible to help MEGs achieve more stable electrical output and accelerate their real‐world ...
Zhongliang Zhang   +2 more
wiley   +1 more source

Presentation of a case of Bruton type primary agammaglobulinemia in Guinea

open access: yesThe Pan African Medical Journal, 2020
X-linked agammaglobulinemia (XLA) is a rare genetic disease caused by a mutation in the Bruton tyrosine kinase (BTK) gene. It is characterized by a profound deficiency of B cells and a decrease in all classes of immunoglobulins (Ig).
Kaba Condé   +4 more
doaj   +1 more source

Gauge fields, ripples and wrinkles in graphene layers

open access: yes, 2008
We analyze elastic deformations of graphene sheets which lead to effective gauge fields acting on the charge carriers. Corrugations in the substrate induce stresses, which, in turn, can give rise to mechanical instabilities and the formation of wrinkles.
Baruch Horovitz   +49 more
core   +1 more source

Tooth eruption status and bite force determine dental microwear texture gradients in albino rats (Rattus norvegicus forma domestica)

open access: yesThe Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) is widely applied for inferring diet in vertebrates. Besides diet and ingesta properties, factors like wear stage and bite force may affect microwear formation, potentially leading to tooth position‐specific microwear patterns.
Daniela E. Winkler   +2 more
wiley   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part II Deriving instrument‐specific correction equations for meta‐analyses using published data

open access: yesThe Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has emerged as a valuable method for investigating the feeding ecology of vertebrates. Over the past decade, three‐dimensional topographic data from microscopic regions of tooth surfaces have been collected, and surface texture parameters have been published for both extant and fossil species.
Mugino O. Kubo   +4 more
wiley   +1 more source

Electrostatic screening in fullerene molecules

open access: yes, 1993
The screening properties of fullerene molecules are described by means of a continuum model which uses the electronic wavefunctions of planar graphite as a starting point.
Gonzalez, J.   +2 more
core   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part I Reproducibility of diet inference using different instruments

open access: yesThe Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has become a well‐established method for dietary inference and reconstruction in both extant and extinct mammals and other tetrapods. As the volume of available data continues to grow, researchers could benefit from combining published data from various studies to perform meta‐analyses.
Daniela E. Winkler, Mugino O. Kubo
wiley   +1 more source

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