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Contribution of SAR Radar Imagery in the Detection of Suspicious Vessels in the Ivorian EEZ

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World Journal of Engineering and Technology 2024年第1期12卷 200-212页

作者： Koffi Cyprien Yoboue jean-baptiste Kassi Eric Valère Djagoua Tiemelé Jacque-André Laboratory of Remote Sensing and GIS University Center for Research and Application in Remote Sensing (CURAT) Félix Houphouet-Boigny University of Abidjan Cocody Ivory Coast

The present work proposed a method for match SAR and AIS data to detect vessels carrying out suspicious activity in the Ivorian EEZ. Two superposition methods, detected AIS and SAR data, based on point-to-point association on the one hand and point-to-line on the other hand, were used to detect suspicious vessels in Ivorian marine waters. The results showed that most vessels detected in the Ivorian EEZ do not declare their positions to avoid being spotted. These funds are likely to practice illegal, undeclared and unregulated fishing (INN fishing). This clandestine activity is very recurrent in Ivorian waters. This is illustrated by the number of suspicious vessels detected by SAR radar imagery which is greater compared to declared or authorized vessels.

关键词： INN Fishing CFAR Algorithm AIS Sentinel-1A Ivory Coast

Efficiency of Legumes in Increasing Yam Yield under Sandy Ferrasol in the Forest Zone of Southwestern Côte d’Ivoire

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Open Journal of Soil Science 2024年第4期14卷 227-236页

作者： Germaine A. Tanoh Félix B. O. Bouadou jean baptiste D. Ettien Department of Soil Sciences Water and Geomaterials University of Felix Houphou&#235t Boigny Abidjan C&#244te d&#8217Ivoire Department of Food Security and Nutrition Swiss Center for Scientific Research in C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

The cropping system is based on traditional farming in rural areas. In this way, yields of some food crops like yam are very low considering their high need for nutrients. The nutrient-rich land is under high land pressure as it is occupied by cash crops such as oil palm and rubber at the expense of food crops and soil fertility is declining. The study was conducted in Grand-Lahou to assess the effect of organic matter provided by legumes in increasing yam yield. The randomized complete block design included four (4) treatments: Arachis hypogaea + yam association (T1), Acacia mangium + yam association (T2), Arachis + Acacia mangium + yam association (T3) and pure yam crop (T0). The parameters measured were: the soil nutrients content, the rate of mineralization of organic matter through the C/N ratio as well as the yield of yam through different techniques that allowed the objective of the study to be achieved. It was noted a slight improvement of nitrogen and organic carbon in all treatments with a higher value recorded in the T2 treatment. The C/N ratio decreased to 12 in all treatments compared to the control, which reflects a normal decomposition of the organic matter. Treatment T1 increased yam yield (8.4 t/ha) in contrast to treatments T2 (4.1 t/ha) and T3 (2.8 t/ha). Legume-based treatments T2 and T3 were associated with a significant decrease in yam yield, resulting in losses of −46.34% to −25.09%, while treatment T1 resulted in a gain of 28.57%. As a result, the treatments involving legumes contributed to normalizing the organic matter content of the soil. The simultaneous association of these two legumes led to a decrease in yam production, contrary to the treatment associating only groundnut.

关键词： Legumes Organic Matter Yam Yield Côte d’Ivoire

Morbidity and Mortality Related to Infectious Diseases in the Roi Boudouin Paediatric Ward in Senegal

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Open Journal of Pediatrics 2024年第4期14卷 727-737页

作者： Guillaye Diagne Aliou Abdoulaye Ndongo Djeneba Fafa Cissé Sidy Lamine Mbaye jean baptiste Niokhor Diouf Fatou Ly Pediatrics Ward of Pikine Hospital Pikine Sngal Pediatrics Ward of Roi Boudouin Hospital Dakar Sngal

Introduction: Infant and child morbidity and mortality linked to infections remain a major concern in both developed and developing countries. The general objective was to determine the characteristics of hospital morbidity and mortality linked to infectious pathologies in the pediatric department of the King Baudouin hospital center in Dakar. Methods: This was a retrospective, descriptive and analytical study focusing on children hospitalized from January 1, 2018 to December 31, 2021 in the pediatric department of the King Baudouin hospital center in Dakar. Results: During the study period, 1474 children were hospitalized for an infectious pathology in the pediatric department. The sex ratio was 1.48. Children aged between one and twelve months represented 34.12%. Morbidity due to respiratory and digestive infections was 42.33% and 33.45%, respectively. Pediatric hospital mortality was 0.75% with a predominance noted in infants between 1 and 12 months (55.86%). Respiratory, digestive infections, sepsis and neurological infections were the main causes of death. Factors associated with mortality were age (1 to 12 months) with p Conclusion: Reducing infant and child mortality linked to infectious diseases remains a crucial challenge to address for improving children’s health. Early detection of related signs, prevention of infections, and adequate care and monitoring of infants and children can contribute to this reduction.

关键词： Morbidity Mortality Infections Children

Interest of Non-Invasive Markers (APRI, FIB-4) for Assessing Hepatic Fibrosis in Patients with Chronic Viral Hepatitis B without Cytolysis and with Low Viral Replication

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Open Journal of Gastroenterology 2024年第5期14卷 192-201页

作者： Mamadou Diakité Kouassi Olivier Claver Koffi Amadou Koné Akoun Fabrice Aké Oury Diallo Ahmadou Stellart jean M. Brou Anassi jean-baptiste Okon Department of Medicine and Hepato-Gastroenterology Teaching Hospital of Bouak&#233 Bouak&#233 C&#244te d&#8217Ivoire Faculty of Medical Sciences Alassane Ouattara University Bouak&#233 C&#244te d&#8217Ivoire

Background and Objectives: The indication for treatment in HBsAg-positive patients with low viral load and normal transaminases requires an assessment of fibrosis. In resource-limited settings, free hepatic fibrosis evaluation tests can aid in therapeutic decision-making. Our study aims to demonstrate the utility of assessing hepatic fibrosis using non-invasive markers (APRI and FIB-4) in patients with chronic B viral hepatitis without cytolytic activity and low viral replication in our context. Patients and Methods: This is a retrospective cross-sectional study conducted between January 2018 and December 2021 at the University Hospital Center of Bouaké. Included were all patients aged ≥18 with normal transaminases (Results: Our study included 241 patients, with a mean age of 36.19 years (±10.52 years) and a male predominance of 52%. The mean FibroScan® value was 6.44 ± 2.3 kPa, and 68 patients (28.22%) had fibrosis >7 kPa. To exclude significant fibrosis (FS Conclusion: A significant proportion of HBV-infected patients with normal ALT and low viral load have active liver disease. Both FIB-4 and APRI biological scores are useful in identifying individuals without significant fibrosis with a good negative predictive value (>50%).

关键词： HBV Infection APRI FIB-4 Impulse Elastography BouakéUniversity Hospital

废玻璃制备方沸石用于吸附废水中的重金属研究

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现代化工 2024年第S2期44卷 134-139页

作者：柏静钟海滢郭建宁容俊琪 jean-baptiste MAWULE DASSEKPO 澳门科技大学可持续发展研究所中国澳门999078 深圳信息职业技术学院交通与环境学院广东深圳518172 哈尔滨工业大学(深圳)土木与环境工程学院广东深圳518055 深圳信息职业技术学院滨海土木工程技术研究所广东深圳518172

以废玻璃为原材料,采用水热合成法制备方沸石,探究其对废水中Pb^(2+)、Cd^(2+)和Cu^(2+)的吸附性能。通过批式实验系统考察了多种物理化学因素(pH、温度、接触时间等)对吸附量的影响。结果表明,初始pH对吸附量的影响较为显著,而温度变... 详细信息

以废玻璃为原材料,采用水热合成法制备方沸石,探究其对废水中Pb^(2+)、Cd^(2+)和Cu^(2+)的吸附性能。通过批式实验系统考察了多种物理化学因素(pH、温度、接触时间等)对吸附量的影响。结果表明,初始pH对吸附量的影响较为显著,而温度变化对平衡吸附量的影响较小。确定了方沸石吸附Pb^(2+)、Cd^(2+)和Cu^(2+)的最佳工艺参数。利用Langmuir等温线模型对方沸石吸附水中的Pb^(2+)、Cd^(2+)和Cu^(2+)过程进行拟合,结果表明,该吸附过程是均质单分子层吸附,且吸附动力学特征更符合准二级动力学方程,证实了该吸附过程主要通过离子交换、化学吸附和表面络合作用实现。为废玻璃的资源化利用及废水中重金属的去除提供了一种低成本、高效率的方法。

关键词：废玻璃方沸石废水重金属吸附性能

Nephroblastoma in Adults about a Clinical Case

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Surgical Science 2024年第2期15卷 81-88页

作者： Tounkara Cheickna Coulibaly Amara Malle Oumar Amadou Bréhima Bolo Coulibaly Bagoyoko Kaloga Daye Samake Hamidou Berthe Honoré jean-baptiste Gabriel Diakite Mamadou Lamine Department of General Surgery Hospital Center “Mother Child” Luxembourg Bamako Mali Directorate of Army Health Services Kati Mali Department of Urology and Andrology Point G University Hospital Bamako Mali

Nephroblastoma is the most common malignant renal tumor in children and is related to an abnormal proliferation of cells resembling those of the embryonic kidney (metanephroma), hence the terminology;embryonal tumor. These are tumors that remain and remain unstudied in Mali because they are common in adults in our context. Its annual incidence is estimated at approximately 1/10,000 births. Nephroblastoma is a rare or even exceptional tumor in adults. The clinical manifestation was a large swelling of the right hypochondrium;abdominal pain for a year;unquantified fever, hypertension, initial hematuria associated with burning during urination and anemia. The main clinical manifestation remained fever and abdominal pain. This renal tumor posed a diagnostic problem which was previously labeled as a mesenteric tumor in our general surgery department. The diagnosis was made by imaging: CT and magnetic resonance imaging. The treatment is multidisciplinary and combines chemotherapy, surgery with or without radiotherapy. The prognosis is poor due to late diagnosis and less effectiveness of chemotherapy compared to the child. Survival did not exceed a year and a half because the renal tumor in our patient was surgically overcome. We report a case of nephroblastoma in an 86-year-old patient with unfavorable histology (hematogenous metastases), operated on in the general surgery department and whose postoperative course was simple and who was referred to oncology for treatment.

关键词： Nephroblastoma Malignant Kidney Tumor Treatment Adult Mali

Impact of Genomics and in Silico Related Technologies in the Drug Discovery Process

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Chinese Journal of Chemistry 2003年第10期21卷 1241-1246页

作者： LEATUTE jean-baptiste DepartmentofValorizationandIndustrialRelationships Paris7University2PlaceJussieu75005ParisFrance

In order to evaluate to what extent will genomics and in silico related technologies improve overall drug discovery process, we analyzed three studies comparing cost, time and attrition rate at each step of the dr... 详细信息

关键词： in silico drug discovery bioinformatics chemoinformatics drug design functional and structural genomics virtual screening

Acceptance and Experience of HIV-Infected Adolescents in Two Hospitals in Yaoundé

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Open Journal of Pediatrics 2024年第2期14卷 435-443页

作者： Isabelle Mekone Nkwele Nelly Kamgaing Pierrette Amanda Emah Manga jeannette Épée Ngoué Hélène Kamo Sélangai Claude Audrey Meguieze Nsoh Ndeh-Fofang Serge Tchoukoua jean-baptiste Fotso Djemo Paul Koki Ndombo Department of Pediatrics Faculty of Medicine and Biomedical Sciences University of Yaoundé I Yaoundé Cameroon Institut Supérieur des Sciences de la Santé de Bangangté Université des Montagnes Bangangté Cameroon Faculty of Medicine and Biomedical Sciences University of Garoua Garoua Cameroon

Introduction: Access to antiretroviral drugs has improved the survival of children infected with the Human Immunodeficiency Virus (HIV). As they reach adolescence, they are confronted with various constraints related to the infection and its treatment, in addition to those of the growth period they are going through. The main aim of the study was to assess the acceptance and describe the experience of HIV infection by infected adolescents but also to investigate the factors associated with good acceptance and a positive experience. Methodology: The cross-sectional analytic study concerned HIV-infected adolescents aged 15 to 19 followed up at the Chantal Biya Foundation-Mother and Child Centre (CME-FCB) and the Yaoundé University Hospital Centre (CHUY) between February 2020 and June 2020. The study saw participants complete a questionnaire containing socio-demographic data and assessing acceptance and experience with the infection. Data analysis was accomplished using Epi info software version 7.***.2.6. Results: One hundred and thirteen HIV-infected adolescents were included in the study. The sex ratio was 0.68 and the mean age was 17 years. More than half of the adolescents had a good acceptance and positive experience with the infection. Related factors were the adolescent’s perception of good health and participation in an association with other infected adolescents. Conclusion: Emphasizing the psychological and educational follow-up of infected adolescents and encouraging their participation in associations for adolescents living with HIV could reduce the consequences of poor acceptance and ensure a better transition to adulthood. .

关键词： HIV Adolescent Acceptance Experience

Contribution of Genomic Surveillance in the Detection and Monitoring of SARS-CoV-2 Variants during the 6 Pandemic Waves in the Central African Republic from 2020 to 2023

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Journal of Tuberculosis Research 2024年第3期12卷 151-164页

作者： Clotaire Donatien Rafaï Ernest Lango-Yaya Marie Roseline Darnicka Belizaire Ouoko Fa-Ti-Gbia Maurel Annicet Adonis Marcel Mbeko Simaleko jean-baptiste Roungou Oscar Senzongo Karl G. Njuwa Fai Boniface Koffi National Laboratory of Clinical Biology and Public Health of Bangui Bangui Republic Central African University of Bangui Bangui Central African Republic World Health Organization Geneva Switzerland Ministry of Health and Population Bangui Central African Republic Africa CDC Addis-Abeba Ethiopia Homegrown Solutions for Health Yaounde Cameroon

Objective: The COVID-19 pandemic has highlighted the need to strengthen diagnosis and genomic surveillance capacities. In 2021, Central African managed five waves of COVID-19 by integrating genomic surveillance into their health monitoring system. This study sought to report surveillance data from the National Laboratory of Clinical Biology and Public Health and describe the circulation of SARS-CoV-2 variants. Materials and Methods: This retrospective, descriptive observational study spans three years, from April 2020 to November 2023. It was conducted on a population of consenting volunteers from across the Central African Republic, who were tested using RT-PCR on nasopharyngeal samples. Data with sufficient information were obtained from the National Laboratory of Clinical Biology and Public Health (LNBCSP) databases. Sequencing was largely carried out at the National Institute of Biomedical Research (INRB) in Kinshasa until May 2023, and subsequently at the LNBCSP. Results and Discussion: Out of 97,864 RT-PCR tests performed, 9,764 were positive, resulting in a prevalence of 9.98%. The average age of the patients was 39.97 years ± 13.76, and the male-to-female sex ratio was 2.12. RT-PCR test positivity was significantly associated with age (p = 0.001), sex (p = 0.013) and clinical manifestations. Ten variants circulated during the five recorded waves, with Omicron (B.1.1.529), Delta (B.1.617.2) variants being predominant. Notably, the B.1.620 and B.640 variants were prominent during the second wave. Conclusion: This retrospective study provides key insights into the COVID-19 pandemic in the CAR. It identifies risk factors and details the circulation of various SARS-CoV-2 variants. Enhancing national genomic surveillance capacities would enable the country to better respond to future pandemic challenges.

关键词： SARS-CoV-2 Variants Central African Republic RT-PCR