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Sol-Gel Processed Indium-Doped Zinc Oxide Thin Films and Their Electrical and Optical Properties

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New Journal of Glass and Ceramics 2014年第4期4卷 55-65页

作者： Radhouane Bel-Hadj-Tahar Abdellatif belhadj mohamed Department of Chemistry Faculty of Science King Khalid University Abha KSA Photovoltaic Laboratory Research and Technology Center of Energy Borj-Cedria Science and Technology Park Hammem-Lif Tunisia

Transparent conducting films of zinc oxide and indium-doped zinc oxide have been prepared by a simple and economical sol-gel technique. This process is feasible for the fabrication of high quality TCO thin films when the processing parameters are optimized. It was found that the out-diffusion of oxygen during the vacuum annealing step was a crucial factor to prepare thin layer with superior properties. Annealing lowers the resistivity down to 4.7 10-3?Ω·cm for the 1 at.% doped films due to the liberation of high-valency In-dopants and the enhanced film density. At high indium concentrations, the free electron density stabilizes because an increasing number of dopant atoms form some kinds of neutral defects. The neutralized indium atoms do not contribute free electrons. The feasibility to deposit highly transparent ZnO thin films has been demonstrated.

关键词： Zinc Oxide Doping Electro-Optical Properties Sol-Gel

Nurses: Workers Particularly Concerned by Contact Dermatitis in Public Hospital

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Open Journal of Nursing 2019年第3期9卷 313-328页

作者： Amira Omrane Charfeddine Amri Lamia Bouzgarrou Awatef Mahfoudh Taoufik Khalfallah mohamed Akrout mohamed Adnene Henchi Hichem belhadj Ali Department of Occupational Medicine and Ergonomics Faculty of Medicine Monastir Research Unit 12SP39 University of Monastir Monastir Tunisia Department of Dermatology University Hospital of Monastir Monastir Tunisia

Background: Contact dermatitis is common disease and represents a significant problem in healthcare sector, mainly among nurses. Many studies reported the prevalence of contact dermatitis from different parts of the world. Nevertheless, data about its frequency in Tunisia especially in public hospital seems to be insufficient. This study aims to assess the prevalence of contact dermatitis among nurses working in public hospital and identify risk factors. Patient and Methods: A cross sectional study was conducted among a representative sample of 1278 health professionals working in a public hospital matched by professional status and department. The survey was based on a questionnaire, a specialized examination and patch tests. Results: The prevalence of occupational contact dermatitis was 22% (17.5 - 27.2). The worker profile at risk of contact dermatitis was a female nurse aged 37 years working in a surgical department during 12.7 ± 9.36 years. Hands were damaged in 92.4% of cases and rhythmicity with occupational exposure was reported by 86% of affected individuals. Patch tests using European Standard Battery were performed among 33 workers and revealed a sensitization to an allergen among 26 workers. Patch test using rubber battery (if suspicion of allergic contact dermatitis to gloves) was performed among 29 agents and positive among 12. The analytical study revealed that history of atopy, job tenure, the mean daily number of hand washing, the mean daily number of worn gloves and mean duration of glove wearing were significantly higher in the affected population. Conclusion: Contact dermatitis affects particularly nurses in public hospitals. Its prevention requires a diagnostic approach based on a detailed professional investigation and patch tests.

关键词： Nurses Contact Dermatitis Public Hospital Prevention

Plasma-catalytic Degradation of Anthraquinonic Dye in Aqueous Solution by Gliding Arc Discharge

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Plasma-catalytic Degradation of Anthraquinonic Dye in Aqueou...

Anatomical and Adaptation Features of <i>Pistacia atlantica</i>Desf. to Adverse Climate Conditions in Algeria

亚太绿色氧化还原技术国际研讨会

作者： mohamed belhadj Mouffok Redouane Ghezzar Fatiha Abdelmalek Noureddine Benderdouche Ahmed Addou Laboratoire des Sciences et Techniques de l’Environnement et de la Valorisation. Faculté des Sciences et Sciences de l’Ingénieur Université de Mostaganem 27000. Algeria Laboratoire des Sciences et Techniques de l’Environnement et de la Valorisation. Faculté des Sciences et Sciences de l’Ingénieur Université de Mostaganem 27000. Algeria Laboratoire des Sciences et Techniques de l’Environnement et de la Valorisation. Faculté des Sciences et Sciences de l’Ingénieur Université de Mostaganem 27000. Algeria Laboratoire de Chimie Moléculaire et Environnement ESIGEC Université de Savoie 73376 Le Bourget du LacFrance Laboratoire des Sciences et Techniques de l’Environnement et de la Valorisation. Faculté des Sciences et Sciences de l’Ingénieur Université de Mostaganem 27000. Algeria Laboratoire des Sciences et Techniques de l’Environnement et de la Valorisation. Faculté des Sciences et Sciences de l’Ingénieur Université de Mostaganem 27000. Algeria

Anthraquinonic Acid Green 25 (AG25) removal was investigated by plasma-chemistry using non-thermal gliding arc at atmospheric pressure. The gaseous species formed in the discharge, and especially OH°

关键词： anthraquinonic dye decolourization degradation gliding arc plasma-catalysis TiO2.

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American Journal of Plant Sciences 2017年第2期8卷 137-153页

作者： mohamed Amara Mohammed Bouazza Mohannad G. Al-Saghir Bouchaib belhadj University Centre Department of Natural Sciences and Life Ain Temouchent Algeria Laboratory of Ecology and Management of Natural Ecosystems Abou Bakr Belkaid University Tlemcen Algeria Laboratory of Ecology and Management of Natural Ecosystems Department of Ecology and Environment Abou Bakr Belkaid University Tlemcen Algeria Department of Environmental and Plant Biology Ohio University Zanesville Ohio USA

This work was conducted to assess the anatomical features of Pistacia atlantica Desf. under Mediterranean semi-arid climate conditions. In this study, phytoecological approach was used at different observation scales including the large ecological scale. 11 samples of P. atlantica species were randomly selected in order to study the anatomy of leaves and branches. The results show that leaves have palisade parenchyma occupying almost the entire mesophyll, measuring 100 to 170 μm. While in branches, the only pith occupies 38% followed by the xylem (24%), relative to the rest of the tissue (epidermis, periderm, collenchyma, pericyclic fiber, secretory duct and phloem). The current results suggest that P. atlantica species has xeromorphic anatomical characters, giving it great ecological plasticity in an arid environment. Moreover, this study shows that the human activities are causing local extinction of this rare species in Algeria.

关键词： Pistacia atlantica Xeromorphic Anatomy Adaptation Arid/Semi-Arid Algeria