111 research outputs found
Gender, globalization and beyond in Karen Tei Yamashita's Tropic of Orange and Jhumpa Lahiri's The Interpreter of Maladies
Ce mĂ©moire explore deux concepts majeurs : la mondialisation et la diaspora et leur impact sur la reprĂ©sentation des femmes dans la sĂ©rie de nouvelles The Interpreter of Maladies de Jhumpa Lahiri et dans le roman Tropic of Orange de Karen Tei Yamashita. Dans le premier chapitre, en sâappuyant sur la thĂ©orie de Vijay Mishra, Literature of the Indian Diaspora: Theorizing the Diasporic Imaginary, ce mĂ©moire examinera lâĂ©tat diasporique de Mrs. Sen Ă travers la notion de « deuil impossible ». Mrs. Sen sera juxtaposĂ©e Ă deux autres personnages fĂ©minins dans le but de dĂ©montrer que la mobilitĂ© et le passage des frontiĂšres nâaffectent pas toutes les femmes de la mĂȘme façon, surtout lorsquâelles viennent de classes et de milieux sociaux diffĂ©rents. De plus, la condition de Mrs. Sen sera Ă©galement comparĂ©e Ă celle de son mari pour soutenir que lâimpact de lâimmigration est plus bĂ©nĂ©fique Ă lui quâĂ elle. Ce mĂ©moire repense donc certaines des raisons qui poussent les gens Ă migrer Ă travers le monde, ainsi quâaux impacts de cette migration sur les individus, en particulier les femmes dont le dĂ©placement limite souvent la mobilitĂ©, la libertĂ© et lâindĂ©pendance. Dans le second chapitre, la thĂ©orie de Chandra Talpade Mohanty, Feminism without Borders, sera utilisĂ©e pour souligner les diffĂ©rences entre la femme occidentale et la femme dite du tiers monde. En outre, lâessai de Mohanty Under Western Eyesâ Revisited, qui condamne les effets nĂ©fastes du capitalisme et de la mondialisation pour promouvoir un projet social basĂ© sur la solidaritĂ©, sera utilisĂ© pour Ă©tudier la description dâEmi et de Rafaela, deux personnages centraux du roman de Yamashita, et ce, dans le contexte de la mondialisation et de ses opĂ©rations dĂ©viantes. Câest en tenant compte des modes opĂ©rationnels criminels et criminisalisant du capitalisme que la mondialisation sera analysĂ©e, et ce, Ă travers la complicitĂ© et la rĂ©sistance des personnages fĂ©minins de Yamashita face au capitalisme global.This thesis explores two major concepts: globalization and diaspora and their impact on the
literary representation of women in Jhumpa Lahiriâs collection of short stories The Interpreter
of Maladies and Karen Tei Yamashitaâs novel Tropic of Orange. In the first chapter, using
Vijay Mishraâs theory on the Literature of the Indian Diaspora: Theorizing the Diasporic
Imaginary, the thesis examines the diasporic state of Mrs. Sen through Mishraâs notion of
âimpossible mourningâ. I juxtapose Mrs. Senâs character to two other female characters to
argue that mobility and crossing borders do not affect all women equally, especially if they
come from different social class and caste backgrounds. In addition, I compare Mrs. Senâs
diasporic condition to her husbandâs to contend that the impact of immigration is more
beneficial to him than her. This thesis, hence, rethinks some of the reasons why people migrate
across the world and its various impacts on individuals, especially women whose displacement
often curtails rather than expands their mobility, freedom and independence. In the second
chapter, therefore, I use Chandra Talpade Mohantyâs Feminism without Borders to highlight
the difference between Western women and so-called Third World women. Furthermore,
using Mohantyâs essay ââUnder Western Eyesâ Revisited,â which condemns the detrimental
effects of capitalism and globalization and promotes an anti-capitalist and anti-global project
based on solidarity, I study the characterization of Emi and Rafaela, two central characters of
Yamashitaâs novel, within the context of globalization and its deviant operations. Referring to
the criminal and criminalizing operative modes of global capitalism, including organ and sex
trafficking, deviant globalization is a critical concept in this thesis through which I read
Yamashitaâs novel and its female charactersâ complicity with and resistance to global
capitalism
Développement d'une régie de culture du safran (Crocus sativus) adaptée aux conditions climatiques québécoises
Le safran est un crocus d'automne qui produit une Ă©pice de grande valeur. Plusieurs safraniĂšres ont Ă©tĂ© implantĂ©es au cours des derniĂšres annĂ©es au QuĂ©bec. Cependant, le type de sol et les conditions climatiques diffĂšrent passablement par rapport aux pays d'oĂč origine la culture, ce qui nous a menĂ© Ă tester plusieurs aspects susceptibles d'influencer le rendement en safran, notamment la profondeur et la pĂ©riode de plantation ainsi que l'application d'une combinaison de fertilisants, champignons mycorhiziens et biostimulants Ă la plantation. Puisque la tempĂ©rature influence fortement la floraison chez le safran, un suivi en continu des tempĂ©ratures du sol a Ă©tĂ© effectuĂ© durant toute l'annĂ©e, et un suivi hebdomadaire de l'initiation florale de mai Ă aoĂ»t. L'Ă©mergence des feuilles et des fleurs est retardĂ©e et diminue avec la profondeur de plantation. Une plantation Ă 10 ou 15 cm semble prĂ©fĂ©rable, mais stimule la production de cormes trop petits pour fleurir. La meilleure pĂ©riode de plantation est de la fin juillet jusqu'Ă la troisiĂšme semaine d'aoĂ»t. La fertilisation a accĂ©lĂ©rĂ© l'Ă©mergence des feuilles Ă l'automne, et a augmentĂ© le nombre de cormes produits ainsi que leur teneur en nutriments. L'ajout de spores de champignons mycorhiziens ainsi que de biostimulants n'a eu aucun effet sur la floraison ou le rendement en safran. Tout traitement confondu, la production de fleurs n'a Ă©tĂ© bonne qu'une seule annĂ©e sur les trois annĂ©es de l'Ă©tude. Il semble que le sol ne soit pas assez chaud en juillet lors de l'induction florale. De plus, dans le secteur Ă l'Ă©tude, les tempĂ©ratures diminuent trop rapidement Ă l'automne ce qui retarde la floraison et rĂ©duit les rendements. Il est proposĂ© de cultiver le safran dans des secteurs plus mĂ©ridionaux et de recourir Ă des techniques visant Ă rĂ©chauffer le sol afin d'augmenter les rendements en safran au QuĂ©bec.Saffron is an autumn crocus that produces a highly valuable spice. Several saffron farms have been established over recent years in the province of Quebec. However, the edaphic and climatic conditions differ considerably compared to the countries of origin of the crop, which led us to test several aspects that could influence the saffron yield, including planting depth and planting period as well as the application of a combination of fertilizers, mycorrhizal fungi and biostimulants at planting. Since temperature strongly influences saffron flowering, continuous monitoring of soil temperatures was carried out throughout the year, along with a weekly monitoring of flower initiation from May to August. Both leaf and flower emergence were delayed, and final emergence reduced as planting depth increased. Planting at 10 or 15 cm seems preferable but stimulates the production of corms too small to flower. The best planting period is from the end of July until the third week of August. Fertilization hastened leaf emergence in the autumn and improved corm production and their nutrient content. The addition of mycorrhizal fungal spores as well as biostimulants had no effect on flowering or saffron yield. All treatments combined; flower production was good in only one of the three study years. It seems that the soil does not warm enough in July during flower induction. Moreover, in the study area, temperatures drop too rapidly during autumn, which delays flowering and reduces yields. It is proposed to cultivate saffron in more southern areas and to use techniques aimed at soil warming in order to increase saffron yields in Quebec
Implantation d'un modÚle de cinétique chimique dans un code d'éléments finis
ModĂ©lisation cinĂ©tique -- ThĂ©orie de la cinĂ©tique chimique -- ModĂšle de rĂ©action -- Ăcriture en fraction massique -- Modification des taux de rĂ©actions -- Les Codes de rĂ©solutions -- Ăquations d'Ă©coulement -- Ăquations moyennes de conservation -- Les modĂšles de turbulence -- Ăquations de bilan -- Conditions aux frontiĂšres -- Ăcriture moyenne des termes sources -- Approches de la combustion turbulente -- MĂ©thodes numĂ©riques -- DiscrĂ©tisation des Ă©quations -- DiscrĂ©tisation du domaine -- DiscrĂ©tisation dans la zone de la paroi -- Algorithme de calcul -- RĂ©sum Ă© des Ă©tapes de rĂ©solution -- RĂ©sultats numĂ©riques -- Ăcoulement dans un canal -- Ăcoulement dans un canal avec une expansion soudaine -- Ăcoulement dans deux jets coaxiaux confinĂ©s
Utilizing Steel Slag in the Removal of Suspended Solids from Dewatered Construction Water
Construction dewatering is an operation used to remove shallow groundwater that
infiltrates construction sites. After recovering this water from the construction sites, the
water is either discharged to the sea, injected in deep groundwater aquifers, or treated
and reused in some other applications. However, municipal and industrial application of
this water is unfeasible due to its poor quality. Thus, in this study, dewatered construction
water is being treated utilizing waste steel slag in order to improve the quality of the
water. The pH of the dewatered construction water used for this study was 7.59 and the
average diameter of steel slag used was 425 nm. For coagulation, the impact of the mass
of steel slag and the contact time on the quality of dewatered construction water were
studied. By using 5gm/L of steel slag, more than 85% of the total suspended solids and
turbidity were removed within 30 minutes.The authors would like to thank Qatar University for the financial support. In addition,
the authors would like to thank Qatar Steel for the supply of the steel slag sample
Fouling mitigation strategies for different foulants in membrane distillation
Providing clean water to a rapidly growing population is an issue that is currently getting lots of attention to offer a sustainable solution for water scarcity. Membrane distillation (MD) is one of the latest technologies that provides great potential in water treatment. Even though there is a tremendous amount of research done during the past two decades on membrane distillation, the long-term use of this process is still restricted by membrane fouling. Membrane Fouling can be defined as the accumulation of various materials in the pores or surface of the membrane that affect permeate's quantity and quality. This review highlights the recent observations on various foulants in MD process. Moreover, different fouling mechanisms of inorganic fouling, organic fouling, biological fouling, and colloidal fouling were investigated for better understanding and prevention of membrane fouling. In order to achieve a sustainable MD process, various techniques to mitigate fouling were discussed comprehensively including pre-treatment processes and cleaning methods. The benefits and disadvantages of these approaches have been investigated and reviewed in order to provide an overall understanding of fouling minimization in membrane distillation process. Fouling mitigation strategies have been suggested for different foulants in membrane distillation
Application of Green Polymeric Nanocomposites for Enhanced Oil Recovery by Spontaneous Imbibition from Carbonate Reservoirs
This study experimentally investigates the effect of green polymeric nanoparticles on the interfacial tension (IFT) and wettability of carbonate reservoirs to effectively change the enhanced oil recovery (EOR) parameters. This experimental study compares the performance of xanthan/magnetite/SiO2 nanocomposites (NC) and several green materials, i.e., eucalyptus plant nanocomposites (ENC) and walnut shell ones (WNC) on the oil recovery with performing series of spontaneous imbibition tests. Scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDAX), and BET (Brunauer, Emmett, and Teller) surface analysis tests are also applied to monitor the morphology and crystalline structure of NC, ENC, and WNC. Then, the IFT and contact angle (CA) were measured in the presence of these materials under various reservoir conditions and solvent salinities. It was found that both ENC and WNC nanocomposites decreased CA and IFT, but ENC performed better than WNC under different salinities, namely, seawater (SW), double diluted salted (2 SW), ten times diluted seawater (10 SW), formation water (FW), and distilled water (DIW), which were applied at 70 °C, 2000 psi, and 0.05 wt.% nanocomposites concentration. Based on better results, ENC nanofluid at salinity concentrations of 10 SW and 2 SW ENC were selected for the EOR of carbonate rocks under reservoir conditions. The contact angles of ENC nanocomposites at the salinities of 2 SW and 10 SW were 49 and 43.4°, respectively. Zeta potential values were â44.39 and â46.58 for 2 SW and 10 SW ENC nanofluids, which is evidence of the high stability of ENC nanocomposites. The imbibition results at 70 °C and 2000 psi with 0.05 wt.% ENC at 10 SW and 2 SW led to incremental oil recoveries of 64.13% and 60.12%, respectively, compared to NC, which was 46.16%.The publication of this article was funded by the Qatar National Library
High flow nasal cannula therapy versus continuous positive airway pressure and nasal positive pressure ventilation in infants with severe bronchiolitis: a randomized controlled trial
Introduction: non-invasive ventilation is widely used in the respiratory management of severe bronchiolitis.
Methods: a randomized controlled trial was carried out in a tertiary pediatric university hospitalÂŽs PICU over 3 years to compare between continuous positive airway pressure/nasal positive pressure ventilation (CPAP/NPPV) and high flow nasal cannula (HFNC) devices for severe bronchiolitis. The trial was recorded in the national library of medicine registry (NCT04650230). Patients aged from 7 days to 6 months, admitted for severe bronchiolitis were enrolled. Eligible patients were randomly chosen to receive either HFNC or CPAP/NPPV. If HFNC failed, the switch to CPAP/NPPV was allowed. Mechanical ventilation was the last resort in case of CPAP/NPPV device failure. The primary outcome was the success of the treatment defined by no need of care escalation. The secondary outcomes were failure predictors, intubation rate, stay length, serious adverse events, and mortality.
Results: a total of 268 patients were enrolled. The data of 255 participants were analyzed. The mean age was 51.13 ± 34.43 days. Participants were randomized into two groups; HFNC group (n=130) and CPAP/NPPV group (n=125). The success of the treatment was significantly higher in the CPAP/NPPV group (70.4% [61.6%- 78.2%) comparing to HFNC group (50.7% [41.9%- 59.6%])- (p=0.001). For secondary outcomes, lower baseline pH was the only significant failure predictor in the CPAP/NPPV group (p=0.035). There were no differences in intubation rate or serious adverse events between the groups.
Conclusion: high flow nasal cannula was safe and efficient, but CPAP/ NPPV was better in preventing treatment failure. The switch to CPAP/NPPV if HFNC failed, avoided intubation in 54% of the cases
Predictive factors of morbidity after surgical treatment of hepatic hydatid cyst
Introduction Surgery remains the basic treatment of hepatic hydatid cyst (HHC). However, it is associated with significant morbidity. The aim of our study was to evaluate mortality and morbidity of surgery of the HHC and to highlight the risk factors. Methods A retrospective study was conducted from January 1, 1996 to December 31, 2006. 391 patients hospitalized for HHC and operated in the Department of General Surgery âAâ of the Rabta Hospital in Tunis, Tunisia. Results The overall mortality rate was 0.7% while the overall morbidity rate was 20.4%. About 16.6% suffered from specific complications, while 3.8% suffered from non-specific complications. Predictors of morbidity in a univariate analysis included cysts larger than 9 cm, dome cysts, cysts with bilious contents, type II, III, IV or V on ultrasound classification, fissured cysts and intrabiliary rupture of hepatic hydatid cyst. The multivariate study consisted of independent predictors of disease at the site of the liver dome, the cysto-biliary fistula and intrabiliary rupture of hepatic hydatid cyst Conclusion The hepatic hydatid cyst of the dome and the existence of preoperative complications in particular intrabiliary rupture of hepatic hydatid cyst are the main factors of morbidity. A better understanding of these factors allows the surgeon to choose the appropiate surgical technique that is associated with less morbidity.Pan African Medical Journal 2012; 13:2
Constructing an Intelligent Model Based on Support Vector Regression to Simulate the Solubility of Drugs in Polymeric Media
This study constructs a machine learning method to simultaneously analyze the thermodynamic behavior of many polymerâdrug systems. The solubility temperature of Acetaminophen, Celecoxib, Chloramphenicol, D-Mannitol, Felodipine, Ibuprofen, Ibuprofen Sodium, Indomethacin, Itraconazole, Naproxen, Nifedipine, Paracetamol, Sulfadiazine, Sulfadimidine, Sulfamerazine, and Sulfathiazole in 1,3-bis[2-pyrrolidone-1-yl] butane, Polyvinyl Acetate, Polyvinylpyrrolidone (PVP), PVP K12, PVP K15, PVP K17, PVP K25, PVP/VA, PVP/VA 335, PVP/VA 535, PVP/VA 635, PVP/VA 735, Soluplus analyzes from a modeling perspective. The least-squares support vector regression (LS-SVR) designs to approximate the solubility temperature of drugs in polymers from polymer and drug types and drug loading in polymers. The structure of this machine learning model is well-tuned by conducting trial and error on the kernel type (i.e., Gaussian, polynomial, and linear) and methods used for adjusting the LS-SVR coefficients (i.e., leave-one-out and 10-fold cross-validation scenarios). Results of the sensitivity analysis showed that the Gaussian kernel and 10-fold cross-validation is the best candidate for developing an LS-SVR for the given task. The built model yielded results consistent with 278 experimental samples reported in the literature. Indeed, the mean absolute relative deviation percent of 8.35 and 7.25 is achieved in the training and testing stages, respectively. The performance on the largest available dataset confirms its applicability. Such a reliable tool is essential for monitoring polymerâdrug systemsâ stability and deliverability, especially for poorly soluble drugs in polymers, which can be further validated by adopting it to an actual implementation in the future
Explainable deep learning model for automatic mulberry leaf disease classification
Mulberry leaves feed Bombyx mori silkworms to generate silk thread. Diseases that affect mulberry leaves have reduced crop and silk yields in sericulture, which produces 90% of the worldâs raw silk. Manual leaf disease identification is tedious and error-prone. Computer vision can categorize leaf diseases early and overcome the challenges of manual identification. No mulberry leaf deep learning (DL) models have been reported. Therefore, in this study, two types of leaf diseases: leaf rust and leaf spot, with disease-free leaves, were collected from two regions of Bangladesh. Sericulture experts annotated the leaf images. The images were pre-processed, and 6,000 synthetic images were generated using typical image augmentation methods from the original 764 training images. Additional 218 and 109 images were employed for testing and validation respectively. In addition, a unique lightweight parallel depth-wise separable CNN model, PDS-CNN was developed by applying depth-wise separable convolutional layers to reduce parameters, layers, and size while boosting classification performance. Finally, the explainable capability of PDS-CNN is obtained through the use of SHapley Additive exPlanations (SHAP) evaluated by a sericulture specialist. The proposed PDS-CNN outperforms well-known deep transfer learning models, achieving an optimistic accuracy of 95.05 ± 2.86% for three-class classifications and 96.06 ± 3.01% for binary classifications with only 0.53 million parameters, 8 layers, and a size of 6.3 megabytes. Furthermore, when compared with other well-known transfer models, the proposed model identified mulberry leaf diseases with higher accuracy, fewer factors, fewer layers, and lower overall size. The visually expressive SHAP explanation images validate the modelsâ findings aligning with the predictions made the sericulture specialist. Based on these findings, it is possible to conclude that the explainable AI (XAI)-based PDS-CNN can provide sericulture specialists with an effective tool for accurately categorizing mulberry leaves
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