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Flow Dynamics during the Hydrocarbon Exploitation for Prevention and Management of Water Venues in Oil Field: A Study Case of Crystal Field in Badila/Chad

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International Journal of Geosciences 2024年第5期15卷 433-448页

作者： Issakha Tidjani Djimet Huguette Christiane Emvoutou Nicodème Djiedeu Jean-Pierre Nguenang Laboratory of Fundamental Physics Department of Physics Faculty of Science University of Douala Douala Cameroon Laboratory of Geosciences Natural Resources and Environment Department of Earth Sciences Faculty of Science University of Douala Cameroon

The southern part of the Lake Chad basin is under the gas and oil petroleum industry due to its hydrocarbon potential for about twenty years. This project stands out as the main challenges of the hydrocarbon production and the management of fluxes particularly the groundwater venues. A comprehensive study is thus conducted to develop a dynamic and analytic model for diagnosing the production performances with a particular view on the management of groundwater venues. The three main concerned reservoirs subdivided on subunits evidence their proper characteristics. The porous media, their densities, the internal flows and the water injection techniques such as water flooding were thus adopted. The oil viscosity variability within the reservoirs creates different levels of mobility between water and oil, highlighting the challenges of water management. The material balance model and the behavior of the well analysis were taken in consideration within the identified aquifer, emphasizing the importance of keeping the pressure through injection. The control of water productions, the management of the reservoir, the well strategical position and the specific completions lead to the model functioning. In addition, the CO log and the Pulsed Neutron indicate their limitations as a result of the water salinity and the porosity of the aquifer. The management of groundwater venues at Badila requires various approaches throughout the lifetime of the Crystal field such as the data acquisition and remediation actions and prevention, under a permanent monitoring of the dynamic fluxes in the reservoirs.

关键词： Groundwater Venues Analytic and Dynamic Model Water Flooding Optimization of Production

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Distribution, Mobility, and Health Risks Assessment of Trace metals in River Sediments from Intense Agricultural Activity Areas in West Africa

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Journal of Materials Science and Chemical Engineering 2024年第8期12卷 12-42页

作者： Ahbeauriet Ahmed Ouattara Maley-Pacôme Soro Albert Brou Kouadio Horo Koné Albert Trokourey Dpartment des Sciences et Technique Universit Alassane Ouattara Bouak Cte dIvoire Laboratoire de Thermodynamique et de Physico-Chimie du Milieu Universit Nangui Abrogoua Abidjan Cte dIvoire Laboratoire de Chimie Physique Universit Flix Houphout Boigny Abidjan Cte dIvoire

The economy of West African countries is mainly based on agriculture. However, the trace metal(loid)s contamination status in rivers is relatively unknown in the region. In this work, 45 surface sediments collected from the Bandama, Comoé, and Bia Rivers in south and south eastern Côte d’Ivoire (West Africa), were analyzed for total metal concentrations and chemical speciation. The results showed that the river sediments were considerably contaminated by Cd and moderately contaminated by As, Cu, Pb, and Zn. Significant spatial variations were observed among the stations but not between the rivers. metals Cd and Cu were likely to cause more ecological risks. The speciation analysis unravelled that the metal(loid)s partitioned mainly in the residual fraction, with the potential mobile fraction varying from 14% to 28%. The study calls for establishment of strict policies relative to the application of fertilizers and agrochemicals and mining activities to protect the environment and human health risks.

关键词： River Sediment Trace metal (Loid)s Multivariate Analysis Potential Ecological Risk Assessments Sequential Extraction Geochemical Indices

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Influence of Microorganisms Effective against Basal Rot and on Agronomic Parameters of Onion [Allium cepa L. (Amaryllidaceae)]

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Journal of Agricultural Chemistry and Environment 2024年第3期13卷 282-299页

作者： Henriette Doukahonon Guigui Bi Zaï Pacôme Zaouli Alain Serge Coulibaly Juliette Ky Dedi Training and Research Unit of Sciences of Nature Laboratory of Biology and Improvement of Plant Production Nangui Abrogoua University Abidjan Cte dIvoire Department of Plant Biology Training and Research Unit (UFR) of Biological Sciences Peleforo Gon Coulibaly University Korhogo Cte dIvoire

Onions are a horticultural crop of great economic, dietary and medicinal importance, and are highly prized by the Ivorian population. However, production remains low, due to a number of constraints, including parasitic attacks. The most frequent is fusariosis caused by Fusarium sp., a pathogen that causes enormous damage to onion crops. Faced with these attacks, chemical control appears to be ineffective, with consequences for human health and the environment. This is why the search for effective alternative methods that respect the environment and human health is so necessary. It is in this context that this study was carried out, with the general aim of controlling fusarium wilt in onion crops, with a view to improving onion production in Ivory Coast through the use of effective microorganisms. The experimental set-up used for this purpose was a fisher block with complete randomization, comprising three replicates. A fungal spore concentration of 106 spore/mL of Fusarium sp., three doses (1%;2.5% and 5% v/v) of EM and one dose of a chemical fungicide (30 mL/16L) were tested on young onion plants. Each block consisted of nine sub-plots with nine treatments. Health parameters (incidence and severity) and agronomic parameters (growth and yield) were assessed. Microbiological analysis of the EM revealed the presence of nine morphotypes of Trichoderma sp., Aspergillus clavatus, Aspergillus flavus, Aspergillus sp., Penicillium sp., Rhizopus sp., lactic acid bacteria of the Bacillus family and the yeast Saccharomyces cerevisiae. Field experimentation showed that the 5% EM microbial solution reduced the incidence and severity of fusariosis compared with the chemical fungicide, and proved to be the best. This dose reduced yield losses by 7.14%, while improving onion growth and yield by over 5%. The results demonstrated the ability of the EM solution to effectively control the causal agent of basal rot in onion crops.

关键词： Basal Rot Effective Microorganisms (EM) Fusarium sp. Onion

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Comparison of Two Recurrent Neural Networks for Rainfall-Runoff Modeling in the Zou River Basin at Atchérigbé (Bénin)

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Journal of Geoscience and Environment Protection 2024年第9期12卷 167-181页

作者： Iboukoun Eliézer Biao Oscar Houessou Pierre Jérôme Zohou Adéchina Eric Alamou National School of Mathematical Engineering and Modeling National University of Sciences Technology Engineering and Mathematics Abomey Benin LaGEA National School of Public Works National University of Sciences Technology Engineering and Mathematics Abomey Benin International Chair of Mathematical Physics and Applications (ICMPA-UNESCO Chair) University of Abomey-Calavi Abomey-Calavi Bnin

Hydrological models are developed to simulate river flows over a watershed for many practical applications in the field of water resource management. The present paper compares the performance of two recurrent neural networks for rainfall-runoff modeling in the Zou River basin at Atchérigbé outlet. To this end, we used daily precipitation data over the period 1988-2010 as input of the models, such as the Long Short-Term memory (LSTM) and Recurrent Gate Networks (GRU) to simulate river discharge in the study area. The investigated models give good results in calibration (R2 = 0.888, NSE = 0.886, and RMSE = 0.42 for LSTM;R2 = 0.9, NSE = 0.9 and RMSE = 0.397 for GRU) and in validation (R2 = 0.865, NSE = 0.851, and RMSE = 0.329 for LSTM;R2 = 0.9, NSE = 0.865 and RMSE = 0.301 for GRU). This good performance of LSTM and GRU models confirms the importance of models based on machine learning in modeling hydrological phenomena for better decision-making.

关键词： Supervised Learning Modeling Zou Basin Long and Short-Term memory Gated Recurrent Unit Hyperparameters Optimization

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小渔村里的Elkano 探访西班牙传奇烤鱼餐厅

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环球人文地理 2024年第17期 74-79页

作者：王洁 Elkano LACRème

在西班牙巴斯克地区的一个小渔村里，藏着一家餐厅，它与巴黎世家并列为渔村的双生瑰宝，吸引着世界各地的游客前去一探究竟。西班牙风情只是热情奔放的弗拉明戈舞和斗牛？西班牙海滩就是清澈碧蓝的地中海式海滩？西班牙美食只有海鲜饭...

在西班牙巴斯克地区的一个小渔村里，藏着一家餐厅，它与巴黎世家并列为渔村的双生瑰宝，吸引着世界各地的游客前去一探究竟。西班牙风情只是热情奔放的弗拉明戈舞和斗牛？西班牙海滩就是清澈碧蓝的地中海式海滩？西班牙美食只有海鲜饭？如果你对以上三个问题的回答都是“YES”，那不得不说：你对西班牙的认识过于简单啦！

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Prevalence and Factors Associated with Positivity of Antinuclear Antibodies (ANA) Patterns, Native Anti-DNA and Extractable Nuclear Antigens (ENA) Antibodies: Experience from a Laboratory in Dakar

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第1期14卷 26-36页

作者： Diop Abdou Diallo Thierno Abdoulaye Ndiaye Babacar Mahou Chantal Diop Marième Gaye Dubrous Phillippe Seck Abdoulaye medical Biology Laboratory Pasteur Institute of Dakar Dakar Senegal Cheikh Anta Diop University of Dakar Dakar Senegal

Background: Diagnosis of autoimmune diseases (AID) is challenging, due to overlapping features with other non-immune disorders. Anti-nuclear antibodies (ANA) are sensitive screening tests but anti-deoxyribonucleic acid-antibody (anti-DNA), and anti-extractable nuclear antigens (anti-ENA) are specific for AIDs. We aimed to look at ANA patterns in our patients and correlated them with anti-ENA for proper interpretation and better patient management cost-effectively. methods: A retrospective study was conducted over 1 year from January to December 2022 who were tested for ANA at biology medical laboratory of Pasteur Institute of Dakar. Anti-ENA and anti-DNA results were also analyzed for ANA-positive patients. Statistical analysis was performed using STATA 14.0, p Results: 216 patients were analyzed. Women predominated at 79.2% and mean age was 48 years [CI 95%, 46 - 50], with extremes of 10 and 89. Most represented age group was [41 - 60] with 38%. ANA was positive in 27 (12.5%) of patients, 59.2% of whom were strongly positive (titer of 1/1000, 1/3200 or 1/6400). The most common pattern was nuclear speckled, which was found in 77.8% of samples. Anti-ENA and anti-DNA positivity in ANA-positive patients was found respectively in 63% (17/27) and 1.4% (3/27) of the samples analyzed. Most commonly identified anti-ENA was anti-Sm 29.6%, anti-SSA 29.6%, anti-Ro-52 25.9%, anti-RNP 18.5% and anti-SSB 14.8% which was associated with speckled pattern. Association results indicated a significant relationship between both tests and between ANA titer in the anti-ENA- and ANA-positive patients (p 0.001). Conclusions: ANA, Anti-ENA and anti-DNA antibodies are essential for AIDS diagnosis. However, the testing repertoire should follow an algorithm comprising of clinical features, followed by ANA results with nuclear, mitotic, and cytoplasmic patterns, anti-ENA, and anti-DNA for a more meaningful, and cost-effective diagnostic approach.

关键词： Antinuclear Antibodies Extractable Nuclear antigen Autoimmune Disease Indirect Immunofluorescence

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New Approach to Rock Classification Based on Sparse Representations

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Open Journal of Applied Sciences 2024年第1期14卷 145-158页

作者： Wognin Joseph Vangah Bi G. Théodore Toa Alico Nango Jerôme Ouattara Sie Alain Clément Unité de Recherche et d’expertise Numérique (UREN) Université Virtuelle de C&#244te d’Ivoire (UVCI) Abidjan C&#244te d’Ivoire UFR Sciences et technologique Département de Physique Université polytechnique de Man (UPM) Man C&#244te d’Ivoire Classe Préparatoire des Grandes Ecoles (CPGE) Université de San Pédro (USP) San Pédro C&#244te d’Ivoire Institut National Polytechnique Houphouë t (INPHB) Yamoussoukro C&#244te d’Ivoire Laboratoire Angevin de Recherche en Ingénierie des Systèmes (LARIS) Institut Universitaire de Technologie (IUT) Université d’Angers Angers France

In geology, classification and lithological recognition of rocks plays an important role in the area of oil and gas exploration, mineral exploration and geological analysis. In other fields of activity such as construction and decoration, this classification makes sense and fully plays its role. However, this classification is slow, approximate and subjective. Automatic classification curbs this subjectivity and fills this gap by offering methods that reflect human perception. We propose a new approach to rock classification based on direct-view images of rocks. The aim is to take advantage of feature extraction methods to estimate a rock dictionary. In this work, we have developed a classification method obtained by concatenating four (4) K-SVD variants into a single signature. This method is based on the K-SVD algorithm combined with four (4) feature extraction techniques: DCT, Gabor filters, D-ALBPCSF and G-ALBPCSF, resulting in the four (4) variants named K-Gabor, K-DCT, KD-ALBPCSF and KD-ALBPCSF respectively. In this work, we developed a classification method obtained by concatenating four (4) variants of K-SVD. The performance of our method was evaluated on the basis of performance indicators such as accuracy with other 96% success rate.

关键词： Rock Recognition Dictionary Signature Color Texture K-SVD Variants KD-ALBPCSF Et KG-ALBPCSF

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妊娠期高血压并发HELLP综合征的影响因素

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循证护理 2024年第5期10卷 917-921页

作者：李梅山东大学齐鲁医院山东250012

目的:探讨妊娠期高血压(GHD)并发HELLP综合征的影响因素。方法:选取2016年3月—2020年5月收治的47例GHD并发HELLP综合征病人为观察组,选取同期收治的47例GHD未并发HELLP综合征病人为对照组,进行单因素分析及多因素Logistic回归分析。结... 详细信息

目的:探讨妊娠期高血压(GHD)并发HELLP综合征的影响因素。方法:选取2016年3月—2020年5月收治的47例GHD并发HELLP综合征病人为观察组,选取同期收治的47例GHD未并发HELLP综合征病人为对照组,进行单因素分析及多因素Logistic回归分析。结果:单因素分析结果显示,两组年龄、孕前肥胖或孕期体重增长、丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、血清总胆红素、血小板计数、应用硫酸镁和早期联合筛查比较差异有统计学意义(P<0.05);Logistic回归分析显示,年龄、孕前肥胖或孕期体重增长、肝功能情况、应用硫酸镁和早期联合筛查是GHD并发HELLP综合征的影响因素(P<0.05)。结论:年龄、孕前肥胖或孕期体重增长过多、ALT、应用硫酸镁和早期联合筛查是GHD并发HELLP综合征的影响因素,护理人员应针对相关影响因素采取针对性的护理措施,以降低患病风险并改善母婴结局。

关键词：妊娠期高血压 HELLP综合征影响因素护理

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Epidemiological, Diagnostic, Therapeutic, and Prognostic Profile of Non-Tuberculous Community-Acquired Purulent Pleurisy in Children at the Bouaké University Hospital Center, 2017-2021

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Advances in Infectious Diseases 2024年第1期14卷 220-232页

作者： Yapo Thomas Aba Christian Yao Pacôme Monemo Richard Azagoh-Kouadio Iburaima Akandji Noelle Gonné Jean-Marie Karidioula Vincent Achi Vincent Kouadio Asse Department of Infectious and Tropical Diseases University Hospital of Bouaké Bouaké Ivory Coast University Alassane Ouattara of Bouake Bouake Ivory Coast Department of Pediatrics University Hospital of Bouaké Bouaké Ivory Coast Department of Bacteriology & Virology University Hospital of Bouake Bouaké Ivory Coast Department of Pediatrics University Hospital of Angré Abidjan Ivory Coast Department of Pneumology University Hospital of Bouake Bouaké Ivory Coast

Introduction: In Côte d’Ivoire, there is a scarcity of data on children’s purulent pleurisies. Objective: This study aims to elucidate the epidemiological, diagnostic, therapeutic, and evolutionary facets of non-tuberculous purulent pleurisies in pediatric patients. methods: A retrospective analysis was conducted using the medical records of children aged one month to fifteen years with purulent pleurisies at Bouaké University Hospital Center from January 2017 to December 2021. Results: The study identified 124 cases of purulent pleurisies, constituting 18% of lower respiratory tract infections and 0.8% of all hospitalizations. The majority of these cases (69%) were in children between 1 and 24 months of age. Prominent symptoms included dyspnea (85.5%), O2 saturation below 95% in room air (76.6%), respiratory distress (68.5%), cutaneous-mucosal pallor (63.7%), and fever (43.5%). Radiological findings predominantly showed right-sided pleurisy (62.1%). The pleurisy was often extensive (78.2%), accompanied by pneumothorax (37.1%), alveolo-interstitial opacities (8.1% of cases), and abscess formations (1.6%). Pleural fluid cultures were positive in 46.9% of cases, with Staphylococcus aureus (75%, methi-S) identified among 32 bacteria. Initial antibiotic treatment was empirical, favoring oxacillin (53.2%) or amoxicillin-clavulanic acid (53.2%) in dual (42%) or triple therapy (33%) with gentamicin (64.1%) and/or metronidazole (21.8%). Treatments also included pleural drainage (68.5%) or repeated evacuation punctures (33.1%), and blood transfusion (39%). The mortality rate was 18.8%. Conclusion: Non-tuberculous purulent pleurisy remains a significant concern in pediatric hospitalizations at the CHU of Bouaké, marked by high mortality rates.

关键词： Community-Acquired Purulent Pleurisies Children Mortality Bouaké

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缺氧诱导的碳酸酐酶对脊髓后角神经元的激活和神经病理性疼痛的诱导

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中国疼痛医学杂志 2024年第1期30卷 15-18页

作者：李千(译) 郑拥军(校) 复旦大学附属华东医院

有一部分神经病理性疼痛是由脊髓后角的中枢神经敏化引起的。但其敏化的形成机制仍不清楚。有证据表明,脊髓血管网络完整性的破坏可能是神经病理性疼痛的致病因素。该研究验证了脊髓后角处的血流量和血管分布减少会导致神经病理性疼痛... 详细信息

有一部分神经病理性疼痛是由脊髓后角的中枢神经敏化引起的。但其敏化的形成机制仍不清楚。有证据表明,脊髓血管网络完整性的破坏可能是神经病理性疼痛的致病因素。该研究验证了脊髓后角处的血流量和血管分布减少会导致神经病理性疼痛的发作。通过使用导致脊髓后角内皮退化的啮齿动物模型(Ⅰ型糖尿病和可诱导的内皮特异性脊髓后角血管内皮生长因子受体2敲除小鼠),发现脊髓血管病变导致伤害性行为超敏反应,同时这也导致神经元缺氧增加,表现为缺氧诱导因子1α、葡萄糖转运脊髓后角蛋白3和碳酸酐酶7等缺氧标志物表达增加。此外,通过鞘内递送二甲基草酰甘氨酸诱导缺氧导致脊髓后角激活神经元以及机械和热超敏反应,表明由血管减少引起的缺氧信号会导致超敏反应和疼痛增加。通过腹膜内注射乙酰唑胺抑制碳酸酐酶活性,抑制缺氧引起的疼痛行为表明在糖尿病中发生的脊髓后角缺氧微环境的诱导以激活神经元并引起神经性疼痛是一个完整的过程。该研究推测通过改善脊髓微血管血流来逆转缺氧状态可以逆转或预防神经病理性疼痛。

关键词：腹膜内注射神经病理性疼痛血管内皮生长因子受体2 缺氧状态血管分布超敏反应脊髓血管碳酸酐酶

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