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农牧民乳制品质量安全的风险感知、政府质量监管的信任与购买意向和行为研究

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黑龙江畜牧兽医 2024年第12期 1-8页

作者：乌云花玛丽卡永梅张良英杜义日格其内蒙古农业大学经济管理学院呼和浩特010019

为了促进农村牧区乳制品消费市场的健康发展,本研究依据内蒙古自治区的东部、中部及西部5个盟市的544份农牧户问卷调查结果,在对农牧民乳制品质量安全的风险感知、对乳制品加工企业的信任情况、对乳制品品牌的满意度、对政府监管乳制品... 详细信息

为了促进农村牧区乳制品消费市场的健康发展,本研究依据内蒙古自治区的东部、中部及西部5个盟市的544份农牧户问卷调查结果,在对农牧民乳制品质量安全的风险感知、对乳制品加工企业的信任情况、对乳制品品牌的满意度、对政府监管乳制品市场的信任度及农牧民对乳制品购买意向和行为统计描述分析的基础上,运用结构方程模型验证它们之间的关系。结果表明:农牧民对乳制品质量安全表现出一定的担忧,但对乳制品加工企业的信任情况、乳制品品牌的满意度、政府监管乳制品市场的信任度较高;此外,农牧民对乳制品有比较高的购买意向,且农牧民购买乳制品的种类以保质期较长的奶茶粉、奶粉等为主,购买种类比较单一;农牧民对乳制品质量安全的风险感知、质量水平的信任、政府监管的信任及品牌的信任均通过购买意向在1%水平上显著影响其购买行为。其中,除了风险感知极显著负向影响购买行为外,其余三个因素均正向影响购买行为。基于此,乳制品企业在产品质量的提高方面要不断下功夫,政府要加大对乳制品市场监管的力度,不断提高公信力,加大农牧区乳制品消费的宣传工作,提高农牧民对乳制品消费的信心和认知,引导农牧民对乳制品多样化的消费,以促进乳业在农牧区的可持续发展。

关键词：乳制品风险感知信任购买行为农牧民

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哈里斯强势登场美国大选

商业周刊（中文版） 2024年第12期 6-6页

作者： Nia-malika Henderson 逸思(译) 不详

这位民主党候选人不仅拥有当总统的自信和经验,还深谱塑造个人形象的力量美国前总统唐纳德·特朗普仍然对美国总统乔·拜登念念不忘,甚至到了要求退款的地步,这是有原因的——7月23日下午,在密尔沃基郊区一所高中的体育馆里,这一点得到... 详细信息

这位民主党候选人不仅拥有当总统的自信和经验,还深谱塑造个人形象的力量美国前总统唐纳德·特朗普仍然对美国总统乔·拜登念念不忘,甚至到了要求退款的地步,这是有原因的——7月23日下午,在密尔沃基郊区一所高中的体育馆里,这一点得到了淋漓尽致的体现。美国副总统卡玛拉·哈里斯(Kamala Harris)作为民主党假定提名人进行了首次正式亮相,她激动人心的演讲让在场的3000名与会者为之振奋。

关键词：密尔沃基美国大选美国副总统民主党候选人美国前总统哈里斯一所个人形象

Elaboration and Structural Investigation of Iron (III) Phosphate Glasses

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Advances in Materials Physics and Chemistry 2013年第8期3卷 332-339页

作者： Said Aqdim malika Ouchetto Laboratoire de Chimie du Solide Appliquée Faculty of Science Rabat University Mohammed V Rabat Morocco Laboratoire de Physique de Haute Energie et de l’Etat Condensé University Hassan II Ain Chock Casablanca Morocco 2Laboratoire de Chimie Minérale Département de Chimie Faculty of Sciences Université Hassan II Ain Chock Casablanca Marocco

The regular melting-quenching method allowed isolating very large vitreous domains within the ternary system Li2O-P2O5-Fe2O3 at 1100. The vitrification and crystallization effects are discussed in terms of phosphorus pentaoxide concentration (mol%). In the course of the present study, we analyzed chemical durability along the glass domain and many sample glasses were isolated. We noticed that our compounds demonstrated very high chemical resistance to attack, even with very highly concentrated mineral acid solutions. This behavior can be assigned to the presence of poorly crystalline phases in these glasses, which tended to increase as the Fe2O3 content increased. This property is a prerequisite for many interesting industrial applications. XRD, IR spectroscopy and SEM micrographs allowed an efficient investigation of the structural changes versus composition within ternary diagrams. The results were found to be consistent with the regular structural changes of phosphate glasses.

关键词： Phosphate Glasses Glass Formation Chemical Resistance IR Spectroscopy XRD SEM

Assessment of flavonoid-rich extracts from dark peels of Ficus carica *** for cosmeceutical and antimicrobial applications

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Traditional Medicine Research 2022年第6期7卷 43-55页

作者： Leila Meziant Mostapha Bachir-Bey malika Boutiche Lynda Gali Assia Ikhlef Hayette Louaileche Laboratory of Applied Biochemistry Faculty of Nature and Life SciencesUniversity of BejaiaBejaia 06000Algeria Food Biotechnology Division Biotechnology Research CenterConstantine 25001Algeria Biotechnology and Health Division Biotechnology Research CenterConstantine 25001Algeria

Background:Exploring natural sources to identify new active ingredients for cosmeceutical and pharmaceutical applications is of interest to many ***:Flavonoid-rich extracts from dark Ficus carica peels were investigated in the present *** were prepared from the peels of four dark cultivars(Bakor Noir,Bouankik,Azenjer and Tazegaght)using acidified *** antimicrobial activity of the extracts was evaluated by the agar well diffusion assay followed by the minimal inhibitory concentration determination using the microdilution method against Gram-positive and Gram-negative pathogenic bacteria and two *** properties were evaluated by measuring antioxidant activity,ultraviolet absorption characteristics and sun protection factor *** antioxidant activity of the extracts was measured using aβ-carotene-linoleic acid *** toxicity of the extracts was assessed using a brine shrimp lethality ***:The extracts contained high amounts of phenolic compounds(3.85–8.63 g/100 g),mainly flavonoids(up to 5 g/100 g).Multiple antibacterial activities were recorded against Gram-positive and Gram-negative bacteria,with the best actions against Bacillus subtilis(minimal inhibitory concentration=156.25µg/mL),Staphylococcus aureus and Pseudomonas aeruginosa(minimal inhibitory concentration=312.5µg/mL),but no antifungal activity was *** extract showed high inhibition of lipid oxidation evaluated by theβ-carotene bleaching assay with a half-maximal inhibitory concentration of 88.84µg/*** extracts showed absorption peaks in the ultraviolet range and Azenjer and Tazegaght extracts at 25 mg/mL presented sun protection factor values>*** brine shrimp toxicity assay results revealed lethal concentration of 50%values greater than 2,000µg/mL,indicating the safety of the ***:Therefore,Ficus carica peel extracts could be considered original ingredients with potential applications in the formulation of

关键词： Ficus carica flavonoids antioxidant activity antimicrobial activity sun protection factor brine shrimp toxicity

The Structure and the Electrical Properties of Pb0.95La0.05[ZrxTi(0.95–x)(Mo1/3,In2/3)0.05]0.9875O3Ferroelectric Ceramics

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Materials Sciences and Applications 2011年第9期2卷 1199-1204页

作者： malika Abba Ahmed Boutarfaia 不详

The structural, the dielectric, and the piezoelectric properties of new ferroelectric Pb0.95La0.05[ZrxTi(0.95–x)(Mo1/3,In2/3)0.05]0.9875O3(0.46 ≤ x ≤ 0.55) ceramics have been investigated. All the samples were being sintered at a temperature ranging from 1000 to 1180℃ after being compacted in circular discs. The detailed structural and ferroelectric properties were carried out for sintered specimens. The results of X-ray diffraction showed that all the ceramics specimens have a perovskite phase. The phase structure of Pb0.95La0.05[ZrxTi(0.95–x)(Mo1/3,In2/3)0.05]0.9875O3 ceramics was transformed from the tetragonal to the rhombohedral, with an increase in the ratio of Zr/Ti in system. In the present system the MPB that coexists with the tetragonal and rhombohedral phases is a narrow composition region of x = 0.50 – 0.51. The scanning Electron Microscopy (SEM) showed an increase of the mean grain size when the sintering temperature was increased. The dielectric constant ε and the coupling factor Kp reached the maximum values, while the mechanical quality factor Qm and the loss tangent reached the lowest values when x = 0.50. For the composition where x = 0.50, these properties include ε = 5414 (at the Curie temperature), tangδ = 0.039, Kp = 0.67, Qm = 20 and a Curie temperature of 335℃.

关键词： MPB Sintering Piezoelectric Dielectric Zr/Ti Ratio Ceramic

Mathematical Modeling of the Amperometric Response to Glucose of Glucose Oxidase Films Deposited by AC-Electrophoresis

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Journal of Sensor Technology 2011年第2期1卷 17-21页

作者： Jan Fransaer malika Ammam 不详

Previous work illustrated that glucose oxidase (GOx) could be deposited on conducting substrates using asymmetrical alternating current electrophoretic deposition (AC-EPD) to form thick enzyme layers suitable for the manufacturing of highly active biosensors. Here, we modeled the amperometric response of GOx layers to glucose as a function of the thickness of the enzyme layer. The model is based on reaction-diffusion equations with irreversible first-order catalytic reactions. The numerical results displayed qualitative and reasonable quantitative agreement with the experimental data obtained for oxidation currents due to glucose, which increase with the enzyme thickness.

关键词： Alternating Current Electrophoretic Deposition Glucose Oxidase Modeling

Toward a Multi-Dimensional Ontology Model for Urban Planning

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Journal of Geographic Information System 2020年第6期12卷 697-715页

作者： Fatimazahra Barramou Khalifa Mansouri malika Addou Laboratory of Systems Engeneering (LaGes) Hassania School of Public Works Casablanca Morocco Laboratory of Signals Distributed Systems and Artificial Intelligence (SSDIA) Higher Normal School of Technical Education Mohammedia Morocco

In the recent past years, the major challenge facing scientists and researchers in the field of knowledge engineering is classifying and sharing geographic data with both computer and human. Ontology is one of the most important classification schemes that aim to make data machine-interpretable. In the literature, all ontology based models developed in the field of urban planning have some limits. First, they describe the nature of each parcel of the soil while ignoring other important components of urban planning such as services, infrastructure … Secondly, these ontologies are developed according to legislation and regulations of the zone studied so they can’t be used by some urban territories that have specific urban law such as Moroccan country. This paper presents a new multi-dimensional ontology model called LUP specifically developed to overcome this flaw. The main goal is to provide semantic land use descriptions according to four dimensions: zoning, services, infrastructure and easement and to define all LUP concepts within the Moroccan urban law. We illustrate the use of our proposed model with a case study by mapping a land use planning document within the area of Ainchock municipality of Casablanca city according to our model concepts.

关键词： Urban Planning Ontology GIS Knowledge Interoperability

Assessing the Impact of Storage Temperature on the Stability and Biocidal Activity of Essential oils Formulated, Case Tribolium Castaneum （herbst）. （insecta, tenebrionidae）

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Journal of Environmental Science and Engineering(A) 2016年第8期5卷 406-415页

作者： Ouchai malika Moussaoui Kamel Djazoulli Zahredine National School of Agronomy ENSA El-harrachbelfort 16000 Algiers (Algeria) Department of Agronomy SAAD Dahlab University Blida 270 Algeria

In this paper, authors describe how to carry out a research assessing the impact of storage temperature on the stability and biocidal activity of formulated essential oils. Cereals, like other stored food, currently experience serious health problems of storage. The offending agents are primary pests such as Sitophilusoryzae and secondary pests including Tribolium. This study focused on the evaluation of the biocidal effect on the essential oils of thyme and citrus, against red flour beetle adults （Triboliumcastaneum） under different temperature regimes. The results showed that different molecules produced a delayed effect （12 h-14 h-16 h-I 8 h） on the populations of Triboliumcastaneum at the storage temperature of 20 ~C. The same results showed an early striking effect of thymol and carvacrol on Triboliumcastaneum compared to limonene. The toxicity of thymol and carvacrol was much more active than limonene at 12 h, which was very remarkable as limonene expressed its toxicity from 14 h with a deadly effect. When temperatures are under 20 ℃ and 25℃, thymol showed a greater degree of efficiency followed by carvacrol and limonene which had lower efficiency. However, at 28℃, carvacrol expressed a very significant biocidal effect compared to the other two formulations, thymol and limonene.

关键词： Thymusfontanesii bio-efficacy essential oils bioactive molecules Triboliumcastaneum plant protection.

Improvement of groundwater resources potential by artificial recharge technique: A case study of Charf El Akab aquifer in the Tangier region, Morocco

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Journal of Groundwater Science and Engineering 2019年第3期7卷 224-236页

作者： SADIKI Moulay Lhassan EL MANSOURI Bouabid BENSEDDIK Badr CHAO Jamal KILI malika EL MEZOUARY Lhoussaine Laboratory of Geosciences of Natural Resources Hydroinformatic sectionFaculty of SciencesIbn Tofail UniversityMaamora CampusBP.1331400 KénitraMorocco Mathematical Analysis Laboratories Non-commutative Geometry and ApplicationsFaculty of ScienceIbn Tofail UniversityMaamora CampusBP.1331400 KénitraMorocco.

In arid and semi-arid zones,water is the most vulnerable resource to climate *** fact,various techniques such as artificial recharge are adopted to restore aquifers and to ensure aquifer sustainability in relation to the accelerated pace of *** is a Mediterranean country highly vulnerable to climate change,many of its main aquifers are subjected to excessive *** technique is practiced to increase potentiality of these *** the Northwestern area of Morocco,the significant development experienced by Tangier City in the industrial,tourism,and commercial sectors will lead to increased water requirements-up to 5 067 L/s(159.8 mm^3)by ***,the Charf El Akab aquifer system,subject to artificial recharge,is the only groundwater resource of Tangier region;hence,a rational management context is needed to ensure aquifer sustainability,and optimized exploitation under the background of differing constraints,such as increased water requirements,and climate change *** work aims to respond,for the first time,to the Charf El Akab aquifer overexploitation problem,and to evaluate the future scenarios of its exploitation in the event of failure of one of the superficial *** work also presents a synthesized hydrodynamic modeling based on the results of the numerical simulations carried out using Feflow software for 2004(date of cessation of injections)and 2011(date of resumption of these facilities),making it possible to evaluate the impact of the artificial recharge on the piezometric level of the aquifer on a spatiotemporal ***,the exploitation scenarios have shown that the aquifer of Charf El Akab will not adequatly provide for the region's water requirements on the future horizon,entailing an optimal management of water resources in the region and an intentionally increased recharge rate.

关键词： Artificial recharge Climate change Numerical modeling Chaf El Akab Feflow Exploitation scenarios