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Fine-scale habitats influence tree species assemblage in a miombo forest

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Journal of Plant Ecology 2017年第6期10卷 958-969页

作者： Jonathan Ilunga Muledi David Bauman Thomas Drouet Jason Vleminckx Arnaud Jacobs jean Lejoly pierre Meerts Mylor ngoy Shutcha Ecologie Restauration Ecologique et PaysageFacultédes Sciences AgronomiquesUniversitéde LubumbashiRoute Kasapa BP 1825The Democratic Republic of the Congo Laboratoire d’Écologie Végétale et Biogéochimie(EvB) CP244Facultédes SciencesUniversitéLibre de Bruxelles50 av.F.D.RooseveltBrussels 1050Belgium Service d’Évolution Biologique etÉcologie CP160/12Facultédes SciencesUniversitéLibre de Bruxelles50 av.F.D.RooseveltBrussels 1050Belgium Herbarium de l’UniversitéLibre de Bruxelles(BRLU) Facultédes SciencesUniversitéLibre de BruxellesCP26550 av.F.D.RooseveltBrussels 1050Belgium

Aims Relationships between local habitat heterogeneity and tree commu-nities in miombo woodlands have been very little *** some studies have addressed this topic at broad scales and based on few environmental parameters,this study aims at(i)detecting fine-scale habitats(≤10 ha)on the basis of a detailed characterisation of soil explicitly considering past anthropogenic disturbances,and an exhaustive census of the tree community,and at(ii)searching for indicator tree species corresponding to the resulting *** The study was carried out in the miombo woodland of Mikembo Forest Reserve,Upper Katanga,The Democratic Republic of the congo.A complete census of the tree community was conducted in a 10-ha forest dynamics plot comprising 160 adjacent quadrats of 25×25 m,with a total of 4604 trees(diameter at breast height>10 cm).Thirty-six physicochemical soil parameters were *** the frequency distribution of soil charcoal content allowed identifying local signature of past human agriculture in the *** strategies were used to define habitats:(i)a combination of principal component analysis(PcA)on soil variables and Ward clustering and(ii)multivariate regression trees(MRT)to search for key soil parameters allowing the best prediction of species ***-habitat associations were tested by means of a robust statistical framework combining the IndVal index and torus *** Findings The forest contained 82 tree species and a significant proportion of wet miombo species(*** macroura).We detected a strong east-west edaphic gradient driven by soil texture;most chemical soil parameters followed this *** habitats were identified based on soil factors and floristic *** indicator species of these habitats were *** key soil fac-tors discriminating habitats were total calcium,available forms of phosphorus and clay *** though past agricultural practices were successfully detect

关键词： forest dynamics plot indicator species miombo multivariate regression trees(MRT) soil torus randomisation

Fuzzy Henstock-Kurzweil Triple Integral

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Journal of Applied Mathematics and Physics 2023年第7期11卷 1860-1870页

作者： Kumwimba Seya Didier Kasongo Ntambwe Dany Mayuke Katshongo jean-Paul lunda Ngoie jean-pierre Département de Mathématiques et Informatique (DRC) Faculté des Sciences Université de Lubumbashi Lubumbashi Democratic Republic of the Congo

In this article, we use the Hausdorf distance to treat triple Simpson’s rule of the Henstock triple integral of a fuzzy valued function as well as the error bound of the method. We also introduce δ-fine subdivisions for a Henstock triple integral and numerical example is presented in order to show the application and the consequence of the method.

关键词： Fuzzy-Valued Function Hausdorff Distance Triple Fuzzy Integral Triple Simpson’s Rule δ-Fine Henstock Integral

Seric Calcium and Magnesium in Normal and Pre Eclamptic Pregnant Women: A Case-Control Study in Kinshasa, D R Congo

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Open Journal of Obstetrics and Gynecology 2018年第4期8卷 408-415页

作者： Pascal ngoy Wakumilua Donatien Kayembe Nzongola-Nkasu jean pierre Elongi Moyene Dophie Tshibuela Beya Mamy Ngole Zita Jeremie Muwonga Masidi Mireille Nganga Nkanga Guelord Mukiapini Luzolo Daddy Kabamba Numbi Département de Sciences de la Santé/Faculté de Sciences/Université Pédagogique Nationale Kinshasa RD Congo Département de Biologie Médicale Service de Biologie Cliniques Cliniques Universitaires de Kinshasa Kinshasa RD Congo Département de Gynécologie-Obstétrique Hopital Général de Référence de Kinshasa Kinshasa RD Congo

Goal: The present study aimed to determine the profile of seric calcium and magnesium in pre-eclamptic and eclamptic pregnant women of Kinshasa province in the Democratic Republic of Congo where preeclampsia is characterized not only by a high incidence, but also by a seasonal variation probably related to nutritional intake. Study Design: This is a case-control study that took place during the period from September 2014 to March 2015 in four quaternary and tertiary maternity hospitals in Kinshasa. A total of 113 healthy pregnant women (controls) and 112 pre-eclamptic and eclamptic pregnant women (cases) were included in this study. Seric calcium and magnesium were measured in all these gravidas by the principle of spectrophotometry with a HUMALYSER Primus semi-automaton. Results: The mean age of those gravidas was 26.8 ± 6.3 years (26.7 vs 26.9, p = 0.11). The majority of these gravidas were primiparous. The mean gestational age in both groups was 31.35 ± 0.9 weeks (32.1 vs 30.6, p = 0.21). The average seric calcium value was 4.47 ± 0.23 mEq /L in healthy pregnant women compared to 3.80 ± 0.71 mEq/l in pre-eclamptics (P 0.001). The mean of seric magnesium was 1.56 ± 0.15 mg/dL in healthy pregnant women compared to 1.20 ± 0.41 mg/dL in pre eclamptics (P 0.001). Seric calcium and magnesium values were low in the pre-eclamptic group and lower in the eclamptic group (P 0.001). Conclusion: This study establishes a relationship between the low concentration of seric calcium and magnesium with pre-eclampsia and eclampsia, which could be one of the determinants of the high prevalence and seasonality of the disease in Kinshasa.

关键词： Seric Calcium Magnesium Preeclampsia Kinshasa

Sustainable strategies for Ebola virus disease outbreak preparedness in Africa:a case study on lessons learnt in countries neighbouring the Democratic Republic of the Congo

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Infectious Diseases of Poverty 2022年第6期11卷 60-69页

作者： Caroline S.Ryan Marie‑Roseline D.Belizaire Miriam Nanyunja Olushayo Oluseun Olu Yahaya Ali Ahmed Anderson Latt Matthew Tut Kol Bertrand Bamuleke Jayne Tusiime Nadia Nsabimbona Ishata Conteh Shamiso Nyashanu Patrick Otim Ramadan Solomon Fisseha Woldetsadik jean‑pierre Mulunda Nkata Jim T.Ntwari Senya D.Nzeyimana Leopold Ouedraogo Georges Batona Vedaste Ndahindwa Elizabeth A.Mgamb Magdalene Armah Joseph Francis Wamala Argata Guracha Guyo Alex Yao Sokemawu Freeman Alexander Chimbaru Innocent Komakech Muhau Kuku Walter M.Firmino Grace E.Saguti Faraja Msemwa Shikanga O‑Tipo Precious C.Kalubula ngoy Nsenga Ambrose Otau Talisuna WHO Sub-Regional Ofce for Africa NairobiKenya WHO Country Ofce BanguiCentral African Republic WHO Country Ofce JubaSouth Sudan WHO Regional Ofce for Africa BrazzavilleCongo WHO Sub-Regional Ofce for Africa DakarSenegal Africa Centres for Disease Control and Prevention Addis AbabaEthiopia WHO Country Ofce BrazzavilleCongo WHO Coun‑try Ofce BujumburaBurundi WHO Country Ofce AsmaraEritrea WHO Country Ofce KigaliRwanda WHO Country Ofce KampalaUganda WHO Country Ofce LuandaAngola WHO Country Ofce Dar Es SalaamTanzania WHO Country Ofce LusakaZambia

Background: From May 2018 to September 2022, the Democratic Republic of Congo (DRC) experienced seven Ebola virus disease (EVD) outbreaks within its borders. During the 10th EVD outbreak (2018–2020), the largest experienced in the DRC and the second largest and most prolonged EVD outbreak recorded globally, a WHO risk assessment identified nine countries bordering the DRC as moderate to high risk from cross border importation. These countries implemented varying levels of Ebola virus disease preparedness interventions. This case study highlights the gains and shortfalls with the Ebola virus disease preparedness interventions within the various contexts of these countries against the background of a renewed and growing commitment for global epidemic preparedness highlighted during recent World Health Assembly *** text: Several positive impacts from preparedness support to countries bordering the affected provinces in the DRC were identified, including development of sustained capacities which were leveraged upon to respond to the subsequent coronavirus disease 2019 (COVID-19) pandemic. Shortfalls such as lost opportunities for operationalizing cross-border regional preparedness collaboration and better integration of multidisciplinary perspectives, vertical approaches to response pillars such as surveillance, over dependence on external support and duplication of efforts especially in areas of capacity building were also identified. A recurrent theme that emerged from this case study is the propensity towards implementing short-term interventions during active Ebola virus disease outbreaks for preparedness rather than sustainable investment into strengthening systems for improved health security in alignment with IHR obligations, the Sustainable Development Goals and advocating global policy for addressing the larger structural determinants underscoring these ***: Despite several international frameworks established at the global level for e

关键词： Ebola virus disease Emergency preparedness and response Lessons learned Case study International Health Regulations Democratic Republic of the Congo