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Search Results: 1 - 10 of 79 matches for " Daou "
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Instrumentos e sinais da civiliza??o: origem, forma??o e consagra??o da elite amazonense
Daou, Ana Maria;
História, Ciências, Saúde-Manguinhos , 2000, DOI: 10.1590/S0104-59702000000500006
Abstract: the article discusses the formation of an elite within early twentieth-century amazon society. it explores the group?s unique social origins, its strategies for obtaining recognition, and its transformations. special attention is focused on individuals who, because of their actions, interests, and expectations, stood out in the arenas of political, administrative, intellectual, and economic activities from the mid-nineteenth through the early twentieth centuries. at the turn of the century, rubber (then monopolized by production in the amazon) ranked second among brazilian exports, ensuring great visibility for the region?s elite - whose emblem was the teatro amazonas.
Natureza e civiliza??o: os painéis decorativos do Sal?o Nobre do Teatro Amazonas
Daou, Ana Maria Lima;
História, Ciências, Saúde-Manguinhos , 2007, DOI: 10.1590/S0104-59702007000500003
Abstract: the decorative panels in the foyer of the teatro amazonas, inaugurated in 1896, stand out from the rest of the building's ornamental iconography. the rubber trade brought great wealth to the capitals of pará and amazonas and as these cities gained national and international fame, their urban fabric and forms of sociability underwent significant changes. the article looks for parallels between the landscape representations of amazonian nature adorning the building's foyer, the construction of the modern city, and social uses of the teatro amazonas, symbol of the era and emblem of the newly rich elite, who were then taking their place on the regional and national stages. the teatro amazonas formed the center of the era's social life and its foyer played host to veritable rituals of 'civilization', in which brazilian and foreign guests enjoyed the fine setting of amazon's nature as represented in the decorative wall panels.
Algorithms for Differential Equations with Oscillatory Solutions
Mohamed K. El Daou
Lecture Notes in Engineering and Computer Science , 2008,
Abstract:
Physico-chemical Properties and Antioxidant Activities of Dietary Fiber Derived from Defatted Rice Bran
Cheickna Daou,Hui Zhang
Advance Journal of Food Science and Technology , 2011,
Abstract: The objective of the study is to study the Physico-chemical properties and antioxidant activities of total, soluble and insoluble dietary fibers from defatted rice bran. Enzymatic-gravimetric method was used to obtain Total, Soluble and Insoluble fraction of dietary fiber from defatted rice bran. The fractions were used to study their structure (SEM), physical properties (color, density, porosity and oil or fat adsorption capacity), hydration properties (water holding, water binding and swelling emulsifying capacity), and antioxidant capacity (DPPH-scavenging activity, metal chelating and reducing power capacity). The physical properties except FBC of SDF were significantly higher than IDF and TDF; however hydration properties were lower than IDF and TDF (p<0.05). Compared to SDF, IDF showed the highest CEC, while its GDRI value was lowest (p<0.05). All dietary fiber fractions at high concentration (5% or 50 mg/mL) showed a high antioxidant activity.
Experimental Study of the Mechanical Behavior of Loose Sand in Oedometric Stress Path
Eyad Seifeddin,Yehia Daou
Journal of Applied Sciences , 2001,
Abstract: Very loose sand is defined as sand whose state is significantly looser than its critical state. In fact, the detailed stress –strain behavior of very loose sands have received almost no attention in the geotechnical literature. So, this paper is intended as a step towards the study of the behavior of very loose sands. In order to study experimentally the behavior of dry and wet loose sand on oedometric path under low stresses and with high values of voids ratio, we have realized several oedometer tests on different types of sand (such as : Hostun sand RF, sand 70-270 and Ziani sand), for which we have used different water contents. As a result of this work, several values of the characteristics of materials studied have been obtained and which permit to make some observations and conclusions concerning the behavior of loose sand.
Compressive Strength of Autoclaved Aerated Concrete Blockwork
Y.A. Daou
Journal of Applied Sciences , 2001,
Abstract: One of the basic problems in the design of masonry structures is the calculation of the compressive strength of masonry walls. This paper discusses the various parameters which affect the compressive strength of Autoclaved Aerated concrete blockwork with particular reference to the British Standard BS 5628: Part 1 and the Draft Eurocode EC6. Thirty six blockwork wallettes made of Autoclaved Aerated concrete blockwork were built and tested together with the corresponding properties of the units. The parameters examined were unit strength, mortar strength and size of the units. For the range of the block width (i.e. 100mm and 200mm), The strength of the wallettes were not significantly affected by the height/width ratio of the unit. Higher block strength yielded higher wallette stergnth, but only a slight difference in the strength of wallettes built with mortar designation (iii) and (iv) (i.e. 1:1:6 and 1: 2:9 by volume, cement: lime: sand respectively) was obtained. The methods used in the British Standard BS 5628 and the Eurocode EC6 for the determination of the compressive strenght of masonry are reviewd and compared with the test results.
Study on Functional Properties of Physically Modified Dietary Fibres Derived from Defatted Rice Bran
Cheickna Daou,Hui Zhang
Journal of Agricultural Science , 2012, DOI: 10.5539/jas.v4n9p85
Abstract: In this study, we investigated the predictive indices for hypoglycemic effect of physically modified fibers. Micronization, ultrasonic, microwave and extrusion cooking treatments were applied to defatted rice bran dietary fibers to get modified defatted rice bran dietary fiber. The effects of physical treatments, pH and time of digestion, on the water binding Capacity (WBC), Swelling Capacity (SWC), Cation exchange Capacity (CEC) and Glucose retardation capacity (GDRI) were studied. All modified fibers exhibited significance (p<=0.05) difference in terms of their hydration capacity at pH 8.7 with extruded fibers showing the highest values for WBC and SWC (4.68g/g and 3.66 ml/g respectively), while micronized fiber had the lowest value of CEC at pH 1.8 (0.15 meq/g). Extruded fiber showed higher GDRI (40.73%), thus higher glucose adsorption capacity (4161μmol/g). It displayed greatest retardation effect against the movement of glucose across the dialysis bag for 9 h compared to other treatments. The study showed that physically modified defatted rice bran dietary fibers have reduction effect on glucose breakdown rate and adsorption and thus can avoid increase in postprandial blood glucose level Therefore, these physically modified fibres showed important improved physiological effects (hypoglycemic effect) and can be incorporated in foods to enhance health benefits.
EEG Compression of Scalp Recordings based on Dipole Fitting
Hoda Daou,Fabrice Labeau
Mathematics , 2014,
Abstract: A novel technique for Electroencephalogram (EEG) compression is proposed in this article. This technique models the intrinsic dependency inherent between the different EEG channels. It is based on dipole fitting that is usually used in order to find a solution to the classic problems in EEG analysis: inverse and forward problems. The suggested compression system uses dipole fitting as a first building block to provide an approximation of the recorded signals. Then, (based on a smoothness factor,) appropriate coding techniques are suggested to compress the residuals of the fitting process. Results show that this technique works well for different types of recordings and is even able to provide near- lossless compression for event-related potentials.
Medically Relevant Criteria used in EEG Compression for Improved Post-Compression Seizure Detection
Hoda Daou,Fabrice Labeau
Mathematics , 2014,
Abstract: Biomedical signals aid in the diagnosis of different disorders and abnormalities. When targeting lossy compression of such signals, the medically relevant information that lies within the data should maintain its accuracy and thus its reliability. In fact, signal models that are inspired by the bio-physical properties of the signals at hand allow for a compression that preserves more naturally the clinically significant features of these signals. In this paper, we illustrate this through the example of EEG signals; more specifically, we analyze three specific lossy EEG compression schemes. These schemes are based on signal models that have different degrees of reliance on signal production and physiological characteristics of EEG. The resilience of these schemes is illustrated through the performance of seizure detection post compression.
In-Vitro Fermentation by Human Fecal Bacteria and Bile Salts Binding Capacity of Physical Modified Defatted Rice Bran Dietary Fiber  [PDF]
Cheickna Daou, Hui Zhang, Camel Lagnika, Oumarou Hama Moutaleb
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.512121
Abstract:

Defatted rice bran dietary fiber (DRBDF) was modified by micronization, ultrasound, microwave and extrusion cooking. We investigated the impacts of these physical treatments on the fermentation ability and bile salts binding capacity of DRBDF. In-vitro fermentation by human fecal bacteria of modified fibers showed that the major fermentation products were propionic, acetate and butyrate acid. Fermentation of extruded fiber gave the highest amounts of propionic and acetic acid 135.76 and 25.45 mmol/L respectively, while, the fermented product with microwaved fiber had the highest butyric acid content (10.75 mmol/L). The amount of short-chain fatty acid increased from 12 h to 24 h and propionic acid was the predominant. On the other hand,in-vitrobile salts binding showed that extruded fiber had higher affinity with sodium deoxycholate and sodium chenodeoxycholate (66.14% and 30.25% respectively) while microwaved fiber exhibited the highest affinity with sodium taurocholate (14.38%). In the light of obtained results we can affirmed that these physical treatments significantly improved the fermentation products and bile salts binding capacity of DRBDF. Extrusion compared to the other physical treatment methods used in this study has greatly and positively influenced the fermentation and bile binding capacity of DRBDF.

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