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Delineation of Lineaments in South Cameroon (Central Africa) Using Gravity Data

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Open Journal of Geology 2013年第5期3卷 331-339页

作者： Owona Angue Marie Louise Clotilde Tabod charles Tabod Nguiya Séverin Kenfack jean Victor Tokam Kamga Alain Pierre Department of Physics Advanced Teacher Training College The University of Yaounde I Yaounde Cameroon

Gravity method is among the most applied geophysical methods in mineral and oil exploration. It may help to identify fault networks which are of interest for mineral exploration. Potential field data can give valuable information on the location of faults in the basement. These faults may have propagated into the overlying sedimentary rocks and influenced fluid flow and distribution of hydrocarbon traps and mineralization zones. A study was therefore conducted in south Cameroon with the aim of highlighting the different lineaments of the region, which were completely or partially hidden by the sedimentary cover. Different gravity data processing techniques including horizontal gradient coupled with upward continuation and Euler deconvolution were used. The application of these methods has mapped out a number of lineaments depicting gravity density discontinuities whose directions are NS, NE-SW, EW and NW-SE. The predominant direction for major lineaments is NE-SW. The major lineaments associated to the faults are: the Kribi-Edea faults, Ambam faults, Ebolowa-south of Yaounde faults;Bipindi-Yaounde faults;Pouma-Yaounde fault and the fault system which crosses the east, north, west of Monatele city. Euler solutions indicate depths up to18 km for the roof of the faults. The main results worked out from this study provide with new elements that allow the improvement of the knowledge on the structure of the study area. The structural map obtained shows major tectonic events that are responsible of the structural layout of the study zone. In addition, information related to the dip and depth of the various structures was also obtained. The map of lineaments is a useful tool for the planning of hydrogeological and/or petroleum investigations.

关键词： South Cameroon Bouguer Anomaly Upward Continuation Horizontal Gradient Euler Deconvolution Lineament

Thoracic splenosis: Case report of a symptomatic case

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Chinese Journal of Traumatology 2020年第3期23卷 185-186页

作者： Florent Le Bars Remy Pascot charles Ricordel Herve Corbineau jean Philippe Verhoye Bertrand Richard De Latour Simon Rouze Department of Cardiothoracic Surgery University Hospital CentreRennesFrance Department of Vascular Surgery University Hospital CentreRennesFrance Department of Pneumology University Hospital CentreRennesFrance

Thoracic splenosis is the autotransplantation of splenic tissue in the left thoracic cavity as a result of a splenic injury. This rare pathology is usually asymptomatic and may be discovered on incidental imaging, but the diagnosis often requires invasive procedures such as surgery in order to eliminate a neoplasic origin. We report a rare symptomatic case of a 39-year-old man presenting with chest pain and multiple nodules revealed on a computed tomography scan. The patient underwent a surgical exploration and the pathological studies concluded to a thoracic splenosis. Indeed, the previous medical history of the patient revealed a left thoraco-abdominal traumatism during childhood. The aim of this paper is to emphasize that the diagnosis can now be performed using only imaging techniques such as technetium-99 sulfur colloid or labelled heat-denatured red blood cell scintigraphy to avoid unnecessary invasive procedures including thoracotomy.

关键词： Splenectomy Thoracic splenosis Splenic injury Diaphragmatic injury Pleural nodule

Epidemiological and Diagnostic Features of Non-Traumatic Gonalgia in Adults in Bouake (Ivory Coast): About 140 Patients

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Open Journal of Rheumatology and Autoimmune Diseases 2023年第4期13卷 78-87页

作者： Kouakou Ehaulier Soh Christian Louis Sougué charles Yao Konan Joe Clauvis Traore Aissata Koffi Joseph Kan Enock Goua jean Jacques Same Bebey Francine Goupille Phillipe Daboiko jean Claude Felix Rheumatology Department University Hospital Center Bouaké Bouaké C&#244te d’Ivoire Internal Medicine Department University Hospital Center Sour&#244 Sanou Bobo Dioulasso Burkina Faso Rheumatology Department Laquintinie Hospital Douala Cameroon Rheumatology Department University Hospital Center Tours France

Background: Non traumatic gonalgia is the second most common reason for rheumatology consultations and accounted for 15.6% of rheumatological disorders in Abidjan. Objective: The aim of this work was to study the epidemiological and diagnostic features of non-traumatic gonalgia (NTG) in a black adult population from sub-Saharan Africa. Patients and Methods: This was a five-year retrospective descriptive study (January 2014 to December 2018) of black sub-Saharan African adult patients with non traumatic gonalgia seen in the rheumatology department of the Bouake University Hospital in Côte d’Ivoire. Results: Of 2198 patients seen for rheumatological conditions, 140 had non traumatic gonalgia (6.4%). The mean age of patients was 56.13 ± 13.3 years (extremes 20 and 87 years), and the sex ratio was 0.43 (42 men and 98 women). Gonalgia without swelling was observed in 33.6% of cases. Symptoms were predominantly progressive (97.1%), chronic (82.1%) and bilateral (50%). The causes of TNM were gonarthrosis (85%), septic arthritis (7.1%), reactive arthritis (2.9%), gout (2.9%), rheumatoid arthritis (1.4%) and chondrocalcinosis (0.7%). Gonarthrosis (119/140) was bilateral in 65 patients, bi- or tri-compartmental in 83, radiographic stage (Kellgren and Lawrence) III in 80 and IV in 15. A germ was isolated in two cases of septic arthritis (methicillin-sensitive Staphylococcus aureus and Streptococcus pneumoniae). Conclusion: GNT is common in rheumatology practice in Bouake, and mainly affects women in their fifties. It is most often a chronic bilateral gonalgia, with gonarthrosis as the main etiology.

关键词： Non-Traumatic Gonalgia Gonarthrosis Bouake

Douglas-fi r(Pseudotsuga menziesii(Mirb.)Franco)in Europe:an overview of management practices

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Journal of Forestry Research 2023年第4期34卷 871-888页

作者： Valeriu-Norocel Nicolescu William LMason jean-charles Bastien Torsten Vor Krasimira Petkova Vilém Podrázský Martina Đodan Sanja Perić Nicola La Porta Robert Brus Siniša Andrašev Martin Slávik Juraj Modranský Michal Pástor Károly Rédei Branislav Cvjetkovic Ahmet Sivacioğlu Vasyl Lavnyy Cornelia Buzatu-Goanță Gheorghe Mihăilescu Faculty of Silviculture and Forest Engineering Transylvania University of BrasovBrasovRomania Forest Research Northern Research StationRoslinMidlothianUK INRAe Centre Val de Loire ArdonOrléansFrance Faculty of Forest Sciences and Forest Ecology University Georg-AugustGöttingenGermany University of Forestry Sofi aBulgaria Department of Silviculture Faculty of Forestry and Wood SciencesCzech University of Life SciencesPragueCzech Republic Croatian Forest Research Institute JastrebarskoCroatia Foundation Edmund Mach San Michele all’AdigeItaly Biotechnical Faculty University of LjubljanaLjubljanaSlovenia Institute of Lowland Forestry and Environment Novi SadSerbia National Forest Centre Forest Research InstituteZvolenSlovakia Faculty of Ecology and Environmental Sciences Technical University in ZvolenZvolenSlovakia Faculty of Agricultural and Food Sciences and Environmental Management University of DebrecenDebrecenHungary Faculty of Forestry University of Banja LukaBanja LukaBosnia and Herzegovina Department of Silviculture Faculty of ForestryKastamonu UniversityKastamonuTurkey Department of Silviculture Ukrainian National Forestry UniversityLvivUkraine Faculty of Horticulture and Forestry Banat’s University of Agricultural Sciences and Veterinary MedicineTimisoaraRomania Vâlcea County Branch National Forest Administration-ROMSILVARâmnicu-VâlceaRomania

Douglas-fir(Pseudotsuga menziesii(Mirb.)Franco),one of the most commercially important tree species in western North America and one of the most valuable timber trees worldwide,was introduced to Europe in *** became a major species for aff orestation in Western Europe after WWII,currently grows in 35 countries on over 0.83 million ha and is one of the most widespread nonnative tree species across the continent.A lower sensitivity to drought makes Douglas-fi r a potential alternative to the more drought-sensitive Norway spruce so its importance in Europe is expected to increase in the *** is one of the fastest growing conifer species cultivated in Europe,with the largest reported dimensions of 2.3 m in diameter and 67.5 m in *** stands have high productivity(up to 20 m 3 ha−1 a−1)and production(over 1000 m 3 ha−1).The species is generally regenerated by planting(initial stocking density from less than 1000 seedlings ha−1 to more than 4000 ha−1),using seedlings of European provenance derived from seed orchards or certifi ed seed *** the range of end-uses of its wood is very wide,the rotation period of Douglas-fi r is highly variable and ranges between 40 and 120 *** the production of large-sized,knotfree timber is targeted,thinnings are always coupled with pruning up to 6 *** is an increasing interest in growing Douglas-fi r in mixtures and managing stands through close-to-nature silviculture,but the species’intermediate shade tolerance means that it is best managed through group selection or shelterwood systems.

关键词： Douglas-fi r Ecological requirements Growth and yield Timber Climate change

Advancing drug safety and mitigating health concerns:High-resolution mass spectrometry in the levothyroxine case study

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Journal of Pharmaceutical Analysis 2024年第9期14卷 1361-1371页

作者： Hana Chmelařová Maria Carmen Catapano jean-Christophe Garrigues FrantišekŠvec Lucie Nováková Department of Analytical Chemistry Faculty of Pharmacy in Hradec KrálovéCharles UniversityAkademika Heyrovského 120350005Hradec KrálovéCzech Republic Laboratoire SOFTMAT(IMRCP) Universitéde ToulouseCNRS UMR 5623UniversitéPaul Sabatier118 route de Narbonne31062 Toulouse Cedex 9France

Levothyroxine is a drug with a narrow therapeutic *** the drug formulation composition or switching between pharmaceutical brands can alter the bioavailability,which can result in major health ***,the increased adverse drug reactions have not been fully explained scientifically yet and a thorough investigation of the formulations is *** this study,we used a non-targeted analytical approach to examine the various levothyroxine formulations in detail and to reveal possible chemical ***-high-performance liquid chromatography coupled with a data-independent acquisition high-resolution mass spectrometry(UHPLC-DIA-HRMS)was ***-DIA-HRMS allowed not only the detection of levothyroxine degradation products,but also the presence of non-expected components in the *** these,we identified compounds resulting from reactions between mannitol and other excipients,such as citric acid,stearate,and palmitate,or from reactions between an excipient and an active pharmaceutical ingredient,such as levothyroxine-lactose *** addition to these compounds,undeclared phospholipids were also found in three *** non-targeted approach is not common in pharmaceutical quality control *** the presence of unexpected compounds in drug formulations proved that the current control mechanisms do not have to cover the full complexity of pharmaceutical formulations necessarily.

关键词： Levothyroxine Excipients Impurities UHPLC-DIA-HRMS Drug safety

Epidemiological and Clinical Aspects of Hospitalized Patients with Chronic Rheumatic Disease at Cocody University Hospital in Abidjan

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Open Journal of Rheumatology and Autoimmune Diseases 2023年第3期13卷 65-70页

作者： Ehaulier Soh Christian Louis Kouakou charles Sougué Konan Joe Clauvis Yao Aissata Traore Joseph Kan Enock Koffi jean Jacques Goua Francine Same Bebey Phillipe Goupille jean Claude Felix Daboiko Rheumatology Department Bouake University Hospital Bouake C&#244te d’Ivoire Rheumatology Department Cocody University Hospital Abidjan C&#244te d’Ivoire Department of Internal Medicine Sour&#244 Sanou University Hospital Bobo Dioulasso Burkina Faso Rheumatology Department Laquintinie Hospital Douala Cameroon Rheumatology Department Tours University Hospital Tours France

Objective: To study the epidemiological and diagnostic features of chronic rheumatic disease (CRD) in a black population in sub-Saharan Africa. Patients and Methods: Retrospective descriptive study over eight years (January 2005 to December 2012) of patients seen for CRD in rheumatology hospitalization at the CHU de Cocody in Abidjan, Côte d’Ivoire. Results: Of 3147 hospitalized patients, 92 had CRD, a frequency of 2.9%. The mean age of patients was 43.50 ± 15.6 years (extremes: 10 to 79 years). The sex ratio was 0.08 (7 men and 85 women). The socio-economic level was low in 44 patients (47.8%), medium in 44 patients (47.8%), and high in 4 patients (4.4%). The reasons for consultation were polyarthritis (64.1%), polyarthralgia (30.4%), and oligoarthritis (5.4%). The mean duration of symptomatology was 19 months (range: 3 to 20 years). The mean length of hospital stay was 14.2 ± 7.7 days (range: 2 to 36 days). The CRD observed were: rheumatoid arthritis (59.8%), systemic lupus erythematosus (23.9%), mixed connective tissue disease (6.5%), undifferentiated connective tissue disease (3.3%), polymyositis (3.3%), systemic scleroderma (2.2%), and systemic vasculitis (1%). Conclusion: CRD is not uncommon in rheumatology hospitals in Abidjan. Diagnostic delays are long, and rheumatoid arthritis and systemic lupus erythematosus are the most frequently encountered conditions.

关键词： Chronic Rheumatic Disease Rheumatoid Arthritis Lupus Abidjan

Pre-Rupture Aneurysm of the Juxta and Sub-Renal Abdominal Aorta in Early Pregnancy: A Case Report

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Open Journal of Obstetrics and Gynecology 2022年第9期12卷 999-1003页

作者： Ibrahim Rahadat Astou Coly Niassy Dialtabé Ibrahima Guessé Ba Papa Adama Dieng Marie-Édouard Faye jean-charles Moreau Gynecological and Obstetric Clinic Aristide Le Dantec Dakar Senegal Cardio Thoracic Surgery Dakar Senegal

Aneurysm of the abdominal aorta is the result of a weakening of the arterial wall and corresponds to abnormal dilatations of the arteries defined as an increase ≥ 50% of the arterial diameter compared to the normal segments. A long asymptomatic, abdominal aortic aneurysm can be a catastrophic maternal-fetal situation due to the high risk of rupture induced by pregnancy. A rare association between aneurysm and pregnancy poses a problem of diagnosis and standardized management. The lack of knowledge of this condition regularly leads to a delay in management, which is a source of excess mortality. We report the case of a patient with a progressive pregnancy of 12 weeks of amenorrhea who presented with a large sub renal abdominal aortic aneurysm with thrombosis and fissuring in order to discuss the diagnostic and management aspects of this association.

关键词： Aneurysm Pregnancy Thrombus Fissuring

FPGA Resources Reduction by a Multiplexing Technique Applied on ANN-Based Harmonics Extraction Algorithms

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Journal of Energy and Power Engineering 2012年第3期6卷 469-477页

作者： Serge Raoul Dzonde Naoussi Ngac-Ky Nguyen charles-Hubert Kom Herve Berviller jean-Philippe Blonde Martin Kom Francis Braun Solid Electronics and Systems Institute University of Strasbourg Strasbourg P.O. Box 6703 7 France Laboratory of Electronics Electrotechnics Automatic and Telecommunications University of Douala Douala P.O. Box 8698 Cameroon Modelling Inteligence Process and Systems Laboratory University of North Alsace Mulhouse P O. Box 68093 France National Advanced School of Engineering University of Yaounde L Yaounde P. O. Box 8390 Cameroon

In this paper, a multiplexing technique is applied on a neural harmonics extraction method, based on an efficient formulation of the instantaneous reactive power theory. This approach can be used in nonlinear loads compensation with APFs （Active Power Filters）. The architecture for reference current generation, synchronized by a neural phase lock-loop, is composed of three Adaline neural networks. This leads to an important consumption of field programmable gate array resources during implementation. The proposed technique uses only one Adaline and keeps the immunity of the approach under non-sinusoidal and unbalanced conditions of voltage. Simulation results of the neural harmonics detection system connected to a reference current controller show balanced and sinusoidal source currents under various conditions. Results with experimental measurement made on an APF test bench demonstrate its good performances on harmonics filtering. Moreover, the simplified structure from the new approach called mp-q method shows a significant resource reduction.

关键词： FPGA active power filters instantaneous reactive power theory power quality resource reduction.

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家养动物的遗传工程:来自鼠遗传模型报告

实验动物科学 1989年第4期20卷 1-7页

作者： jean-Paul Renard charles Babinet 张彦戈

本文对从转基因鼠所得到的大量观察进行了报道,以便检验将基因直接导入家养动物的可行性。外源基因的组织特异的或一般的表达已经实现,并且有证据表明它可与内源基因相配合进行活动,这些结果表明参与某些有动物技术价值的特征行为(如食... 详细信息

本文对从转基因鼠所得到的大量观察进行了报道,以便检验将基因直接导入家养动物的可行性。外源基因的组织特异的或一般的表达已经实现,并且有证据表明它可与内源基因相配合进行活动,这些结果表明参与某些有动物技术价值的特征行为(如食物消化,泌乳,免疫反应)的器官(如肝、乳腺)或组织(如外分泌腺、B淋巴细胞)的活动,通过基因转移得到适当的促进。目前,偶而也能观察到外源基因的异常表达或传递;有时转基因动物的生殖力会严重下降。这些失控行为及至今尚在使用的将基因导人生殖系的低效率方法,对于基因工程在家养动物中的应用仍是一个主要的障碍。

关键词：外源基因家养动物转基因动物基因片段生殖系生殖力金属硫蛋白基因外分泌腺技术价值弹性蛋白酶基因