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Ecthyma Gangrenosum about a Case at the Centre Hospitalier Roi Baudoin de Guédiawaye in Senegal

Open Journal of Pediatrics 2022年第4期12卷 652-656页

作者： Jean Baptiste Niokhor Diouf Hadja Mariama Barry Louis Philippe Sarr nd.ye Diama Ba Pediatric Department Centre Hospitalier Roi Baudouin de Guédiawaye Guédiawaye Senegal Saint Christopher Iba Mar Diop School of Medicine-Pharmacy-Dental Dakar Senegal

Background and Aim: Ecthyma gangrenosum (EG) is a rare necrotic skin infection caused by Pseudomonas aeruginosa occurring on healthy skin mainly, but not exclusively, in immunocompromised patients. We report the case of EG of unusual presentation in a 12-month-old infant. Case Presentation: This was a 12-month-old male infant who was referred from a peripheral structure for the treatment of facial swelling associated with fever. In his antenatal and intra nasal history, there was a notion of hospitalization for 15 days for early neonatal infection and a delay in psychomotor development. The admission examination showed the fair general condition, hyperthermia at 39°C, tachycardia at 136 beats/minute, and polypnea at 48 cycles/minute. The weight-for-height index with a z-score of 3DS was also found. The dermatological examination at the entrance found an extensive brownish inflammatory tense infiltrated plaque taking the mandibular, submental, retro-auricular occipital regions rapidly evolving towards necrosis, a significant swelling predominant on the upper right eyelid preventing the opening of the associated eyes to mouth ulceration. Biological abnormalities were predominantly neutrophilic leukocytosis, elevated CRP, and elevated muscle enzymes. Microbiological examination of skin samples had isolated Pseudomonas aeruginosa. He had received antibiotic therapy, and a necrosectomy under general anesthesia. The evolution was favorable and he was discharged from the hospital on D26 of hospitalization. Conclusion: This observation is rare due to its location, its early onset, and non-neutropenic background.

关键词： Ecthyma Gangrenosum Pseudomonas aeruginosa Infant

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Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO_(2) for lithium-ion batteries in half/full cells

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Journal of Energy Chemistry 2024年第6期93卷 229-242,I0006页

作者： Jian-En Zhou Yiqing Liu Zhijian Peng Quanyi ye Hua Zhong Xiaoming Lin Ronghua Zeng Yongbo Wu Jiaye ye Guangdong Provincial International Joint Research Center for Energy Storage Materials Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon ***,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical *** rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical *** feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage *** work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.

关键词： Lithium-ion batteries Zeolitic imidazolate framework LiNi_(0.1)Co_(0.9)O_(2) Electrochemical properties

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Interaction of single-pulse laser energy with bow shock in hypersonic flow

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Chinese Journal of Aeronautics 2014年第2期27卷 241-247页

作者： Hong Yanji Wang Diankai Li Qian ye Jifei State Key Laboratory of Laser Propulsion & Application Equipment Academy

Pressure sensing and schlieren imaging with high resolution and sensitivity are applied to the study of the interaction of single-pulse laser energy with bow shock at Mach 5. An nd：YAG laser operated at 1.06 μm, 100 mJ pulse energy is used to break down the hypersonic flow in a shock tunnel. Three-dimensional Navier-Stokes equations are solved with an upwind scheme to simulate the interaction. The pressure at the stagnation point on the blunt body is measured and calculated to examine the pressure variation during the interaction. Schlieren imaging is used in conjunction with the calculated density gradients to examine the process of the interaction, The results show that the experimental pressure at the stagnation point on the blunt body and schlieren imaging fit well with the simulation. The pressure at the stagnation point on the blunt body will increase when the transmission shock approaches the blunt body and decrease with the formation of the rarefied wave. Bow shock is deformed during the interaction. Quasi-stationary waves are formed by high rate laser energy deposition to control the bow shock. The pressure and temperature at the stagna- tion point on the blunt body and the wave drag are reduced to 50%, 75% and 81% respectively according to the simulation. Schlieren imaging has provided important information for the inves- tigation of the mechanism of the interaction.

关键词： Drag Flow control Navier-Stokes equation Shock wave Wind tunnel test

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Up-conversion of nd^(3+)/Yb^(3+)/Tm^(3+) tri-doped CaTeO3 compound under excitation of 808 nm

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Rare Metals 2021年第4期40卷 1008-1013页

作者： Zhong-Qiang ye Si-Guo Xiao Xiao-Liang Yang School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China

nd^(3+)/Yb^(3+)/Tm^(3+) tri-doped CaTeO3 compounds were prepared by a solid-state reaction *** blue up-conversion(UC) luminescence at around 476 nm,which corresponds to the Tm^(3+):^(1)G_(4)→^(3)H_(6) transition,was observed under 808-nm *** nd^(3+)→Yb^(3+)→Tm^(3+) energy transfer process was responsible for the strong blue up-conversion emission in the tri-doped *** Tm^(3+) blue up-conversion emission intensity was strongly dependent on the concentrations of Yb^(3+) and nd^(3+).The possible up-conversion mechanisms for the nd^(3+)/Yb^(3+)/Tm^(3+) tri-doped CaTeO_(3) phosphor are discussed,based on the nd^(3+) and Yb^(3+) concentration-dependent UC spectra,near-infrared luminescence spectra and luminescence decay curves.

关键词： Up-conversion Tellurite 808 nm Energy transfer

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Epidemiological, Clinical and Outcome Aspects of Care-Related Tetanus in Dakar, Senegal

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Advances in Infectious Diseases 2022年第2期12卷 230-240页

作者： Viviane Marie Pierre Cisse nd.ye Fatou Ngom Gueye Louise Fortes Imelda Mickelina Thoo Aminata Massaly Khardiata Diallo Mbaye Daye Ka nd.ye Aissatou Lakhe Assane Diouf nd.ye Maguette Fall Daouda Thioub Aboubakry Sidikh Badiane Latyr Junior Diouf Alassane Sarr Sylvie Audrey Diop Cheikh Tidiane ndour Masserigne Soumaré Moussa Seydi Infectious and Tropical Diseases Department Fann Teaching University Hospital Dakar Senegal Department of Community Health Alioune Diop University Bambey Senegal Department of Health Thies University Thies Senegal

Introduction: Tetanus portals of entry are numerous. Amongst these, the carerelated portals of entry are rarely reported. The aim of the study was to describe the epidemiological, clinical and outcome aspects and identify the factors associated with death from care-related tetanus. Patients and Methods: This is a retrospective study of descriptive and analytical purposes. Data were collected from the medical records of patients admitted to the Infectious and Tropical Diseases Department of the National University Hospital Center (CHNU) of Fann in Dakar for care-related tetanus during the period ranging from 1 January 2009 to 31 December 2016. Care-related tetanus was defined as any case of tetanus occurring after a surgical procedure, including circumcisions performed even outside a health facility. Results: In eight years, 50 cases of care-related tetanus were recorded. Care-related tetanus accounted for 6.7% of hospitalized tetanus cases. The mean age of patients was 21 ± 22 years, with a male predominance (sex ratio: 6.14). The procedure had been performed in most cases, either in a health facility in 22 patients (44%) or at home in 16 patients (32%), and occurred after circumcision. In 62% of cases the portal of entry was urological, followed by orthopedic surgery (14%) and visceral surgery (10%). The procedures performed were dominated by circumcision (31 cases), limb amputation (3 cases) and inguinal hernia repair (2 cases). Tetanus was immediately generalized on admission in all patients. Eighty-four percent (84%) of patients were admitted with Mollaret stage II. Cardiovascular (11 cases), infectious (10 cases) and respiratory (9 cases) complications were the most frequent. The hospital case fatality rate was 24%. Factors associated with death were female gender (p = 0.03), age between 15 - 60 years (p = 0.02), incubation time Conclusion: Care-related tetanus remains a concern in poor income countries, particularly in Senegal. The drop of these cases will req

关键词： Tetanus Care Surgery Dakar Senegal

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The Use of Atypical Neuroleptics in Drugs Management in Fann’s Psychiatry Department

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Open Journal of Psychiatry 2021年第1期11卷 1-11页

作者： nd.ye Dialé ndiaye ndongo Lamine Fall Aida Sylla Sénéba Cissé Mamadou Habib Thiam Service de Psychiatrie Centre Hospitalier National Universitaire de Fann Dakar Senegal

Background and Objectives: Neuroleptics have revolutionized pharmacological management in psychiatry. The advent of atypical neuroleptics constitutes a major turning point in this therapeutic challenge. The objective of our study was to determine the prescription of these atypical neuroleptics in Fann’s psychiatry department. Methodology: It was a descriptive retrospective cross-sectional study that involved 223 patients hospitalized in the psychiatry department of Fann Hospital during the period from January 2015 to December 2017. Results: Our study shows a majority prescription of classic neuroleptics in combination Haloperidol-Chlorpromazine 53% and 14% in monotherapy and a prescription of atypical neuroleptics at 4%. They are prescribed in combination with the classics at 4%. Conclusion: These results show a still low prescription of atypical neuroleptics which raises questions about the availability and affordability of such drugs, but also about prescription habits in the context of developing country.

关键词： Atypical Neuroleptics Classic Neuroleptics Psychiatry Senegal

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Nutritional and Sensory Properties of Penne-Type Pasta Based on Cereals (Oryza sativa (L.), Digitaria exilis, Pennicetum glaucum), Tubers (Ipomoea batata, Manihot esculenta Crantz), and a Legume (Vigna unguiculata (L.))

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Food and Nutrition Sciences 2024年第5期15卷 351-360页

作者： Maurice Jean François Sylvestre Lopy nd.ye Fatou ndiaye Malick Mbengue Mamadou Salif Sow Abdou Diouf Department of Cereals and Legumes Institute of Food Technology (ITA) Dakar Senegal Polytechnic School Cheikh Anta Diop University Dakar Senegal

This study aimed to evaluate the nutritional and sensory characteristics of penne-type pasta produced from locally sourced cereals, tubers, and legumes. To achieve this, we formulated four different types of pasta with varying levels of incorporation ranging from 10 to 50% cereals such as millet, fonio, and rice, tubers such as manioc and sweet potato, and legumes such as cowpea. The results showed that the incorporation of local products considerably improved the nutrient content of penne without being rejected by consumers. Sensory analysis showed that the best results were obtained with mixtures of sweet potato, cowpea, and wheat, as well as with rice, manioc, cowpea, and sample wheat. These results are of great importance to manufacturers in a world where developing nutritious and attractive food products is a crucial challenge.

关键词： Pasta Tubers Cereals Legumes

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Assessment of Radiofrequency in Otorhinolaryngology at the Military Hospital of Ouakam (MHO)

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International Journal of Otolaryngology and Head & Neck Surgery 2021年第5期10卷 433-440页

作者： Abdou Sy Ahmadou Cheikhou Sall Mamadou Oury Barry ndè ye Fatou Thiam Pape Yakhya Ba Malick ndiaye ENT Department Diamniadio Children Hospital Dakar Senegal ENT and Cervicofacial Surgery Department of the Military Hospital of Ouakam (MHO) Hyderabad India

Introduction: Coblation® is a low temperature-controlled tissue ablation technique widely used in human surgery. Its development in otorhinolaryngology has allowed a spectacular advance in the management of diseases of the nasal and oral cavities. The objective of our work was to study the indications for radiofrequency in ENT, to describe the technical aspects and to evaluate the results of his practice at the HMO. Patients and Methods: This is a retrospective study carried out in the ENT and Head and Neck Surgery department of the Ouakam Military Hospital (MHO) over a period of 3 years (from January 2015 to the end of December 2017), involving 37 patients who received radiofrequency treatment in the ENT sphere. Results: The study was carried out on 37 patients. The sex ratio of 0.19. The mean age of the patients was 33.3 years. The indications were dominated by chronic caseous cryptic tonsillitis with or without halitosis with 24 cases (64.9%) followed by recurrent tonsillitis in 5 cases (13.5%) then we have obstructive hypertrophy of the palatal tonsils with syndrome sleep apnea (OSAS) in 4 cases (10.8%) followed by nasal obstruction (hypertrophy of the inferior turbinates) and hypertrophy of the soft palate and uvula in 2 cases (5.4%). The complication rate was 8.1% and dominated by transient dysgeusia in 1 case or 2.7%, uvula edema in 1 case or 2.7% and bleeding in 1 case or 2.7%. The postoperative follow-up was done one week, 1 month, 3 months, 6 months and 12 months after radiofrequency. Volumetric reduction begins to set in from 1 month (62.5%) and becomes maximum in 3 months (74.3%). Conclusion: Coblation® is a controlled tissue ablation technique at low temperature, patented by ArthroCare® Corporation in 1997. Very widespread in human surgery. Its development in otorhinolaryngology was later, but allowed a spectacular advance in the management of diseases o

关键词： Radiofrequency Evaluation Coblation Indications Techniques Complication

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DEXA Contribution in Bone Densitometry Evaluation on Osteoporosis in Senegal: Results of a Study Realized in African Black Populations

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Open Journal of Rheumatology and Autoimmune Diseases 2016年第4期6卷 85-95页

作者： nd.ye Marième Diagne-Gueye Thierno Oumar Soko Bineta ndiaye Ismaïla Diedhiou Abdou-Rajack ndiaye Service de Médecine Polyvalente Services Médicaux Hopital Principal de Dakar Dakar Sénégal

Osteoporosis, a public health problem is able to occur severe fractures and its prevalence increases in developing countries. Several factors involved in its pathogenesis. These factors are: Heredity, elderly, race, ethnicity, hormones, physical inactivity, sunlight exposure, vitamin D deficiency and certain drugs. In Africa, few data are available and the disease prevalence is maybe underestimated. In Senegal, measure of bone mineral density is recent. In this study, our objective was to determine DEXA patients profile and epidemiological, clinical characteristics of patients for densitometry examination. Thus, 43 cases were collected;lumbar and femoral sites were evaluated. Median lumbar T-score was 0.91 and the femoral T-score was 0.16. Osteopenia was found in 35% of patients and osteoporosis in 26%. Bone Mineral Density was abnormal in 60% of cases. This study is another proof of documented reality of osteoporosis in Senegal. It determines frequency in a population at risk. For the future, it opens way for further larger studies to get better profile of the patients and prevalence osteoporosis in Senegal.

关键词： Osteoporosis Bone DEXA Africa Black Populations

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Laser Surface Remelting of Fe-based Alloy Coating Deposited by APS

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稀有金属材料与工程 2012年第S1期41卷 407-413页

作者： Fu Teng ye Fuxing Wei Haihong Cui Chong Tianjin Univ Sch Mat Sci & Engn Tianjin 300072 Peoples R China Tianjin Key Lab Adv Joining Technol Tianjin 300072 Peoples R China

The Fe-based amorphous alloy coatings with different porosities were deposited on Q235 steel substrates by means of atmospheric plasma spraying(APS).The as-sprayed coatings were remelted by the facility of a nd:YAG laser to further enhance their compactness and bonding strength via orthogonal experiment *** effects of laser remelting on the microstructure,phase compositions and mechanical properties of the as-sprayed coatings were investigated by optical microscopy,scanning electron microscope,X-ray diffraction and Vickers microhardness *** corrosion performance of the coatings was evaluated by both potential dynamic measurements(PDM)and electrochemical impedance spectroscopy(EIS)in a 10%NaOH *** results indicate that laser power of 700 W,scanning velocity of 4 mm/s,beam size of 3 mm and porosity of 1.19%are the optimized remelting process *** laser-remelted coatings exhibite more homogenous structure as strong metallurgical bonding to *** amorphous phases in the as-sprayed coatings crystallize toα-Fe,Fe2Si,Fe3.5B,and Fe2W phases for the high temperature and rapid solidification in the remelting *** microhardness values of as-sprayed are in the range of 700-800 HV0.1,while the microhardness values of the remelted coatings are enhanced slightly to 750-850 *** PDM and EIS analysis results show that the remelted coatings exhibite relatively excellent corrosion resistance compared with the stainless steel 1Cr18Ni9Ti,however the corrosion resistance of the remelted coatings is inferior to the as-sprayed amorphous coatings.

关键词： Fe-based amorphous alloy coating plasma spraying laser surface remelting corrosion resistance

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