Relevant bibliographies by topics / Plateau de Mbé

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Plateau de Mbé'

Author: Grafiati
Published: 7 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "Plateau de Mbé"

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Vennetier, Pierre. "Urbanisation et production agricole : les paysans pionniers du plateau de Mbé (Congo)." Cahiers d'outre-mer 41, no. 163 (1988): 303–8. http://dx.doi.org/10.3406/caoum.1988.3273.

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MABA, NGOULOUBI Prince Loïque. "ACCÈS A L'EAU ET PRODUCTION MARAÎCHÈRE SUR LE PLATEAU DE MBÉ EN RÉPUBLIQUE DU CONGO." Journal de Géographie Rurale Appliquée et Développement (J_GRAD) 5, no. 2 (2025): 266–79. https://doi.org/10.5281/zenodo.14677410.

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Le maraîchage, activité génératrice de revenus complémentaires, est un bon moyen d’améliorer la nutrition des populationsen assurant une autosuffisance alimentaire, et une promotion des activités sociales et communautaires. Cependant, cetteactivité est confrontée à des problèmes d’accès à l’eau. La présente étude analyse les problèmes d’accès à l’eau d’arrosagepour une production maraîchère ainsi que la caractérisat
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Obami-Ondon, Harmel, Médard Ngouala Mabonzo, Urbain Gampio Mbilou, and Bernard Mabiala. "Etude de la variabilité saisonnière des précipitations sur le plateau de Mbé au Pool-Nord (Congo-Brazzaville) : impacts sur les eaux de surface et souterraines." Proceedings of the International Association of Hydrological Sciences 384 (November 16, 2021): 233–39. http://dx.doi.org/10.5194/piahs-384-233-2021.

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Abstract. Cette étude porte sur l'impact de la variabilité saisonnière des précipitations sur les eaux du Plateau de Mbé. 120 échantillons d'eau ont été prélevés dans huit (08) points d'eau (1 puits, 4 forages et 3 rivières) entre novembre 2017 et août 2018. L'analysés au laboratoire de ces échantillons, permettent de caractériser les éléments physico-chimiques des eaux. Ces résultats sont traités à partir d'une méthode hydrochimie, en utilisant les diagrammes : de Piper, de Schoeller Berkaloff, de Stiff, et de Wilcox. Les données traitées montrent que les valeurs obtenues après les analyses d
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Pan, Zhandong, Xuemei Cai, Liqun Cai, et al. "Soil and Microbial Biomass Response to Land-Use Changes in the Loess Plateau." Sustainability 16, no. 23 (2024): 10496. http://dx.doi.org/10.3390/su162310496.

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Vegetation restoration is a critical strategy for addressing ecosystem degradation globally. However, understanding the specific impacts of land-use changes, particularly the conversion of farmland to forestland and grassland, on soil nutrients and microbial biomass in the Loess Plateau remains limited and requires further evaluation. Therefore, this study was conducted to explore how these conversions affect soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), and microbial biomass components under various land-use patterns. We studied the SOC, TN, TP, soil microbial biomass
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Yan, Ruyu, Fengyun Xiang, Yaqiong Li, Xuxun Li, Yuhao Zhang, and Jifu Li. "Study on Soil Fertility Characteristics of Walnut Orchards with Different Parent Materials and Soil Types in Gyaca County, Tibet." Agronomy 14, no. 7 (2024): 1496. http://dx.doi.org/10.3390/agronomy14071496.

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Walnut trees on the Tibetan Plateau have sustainable and nutritious characteristics. They grow naturally without the use of any chemical fertilizers and pesticides. Therefore, the soil fertility of walnut orchards is a key factor influencing walnut yield and quality. This experiment measured and analyzed the basic soil nutrient content, microbial biomass carbon (MBC), nitrogen (MBN), phosphorus (MBP), and leaf nutrient indicators in five types of representative walnut orchard soil parent materials in Gyaca County to clarify the fertility characteristics of different soil types and their correl
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Liu, Bing Ru. "Relationship between Reaumuria soongorica Community Structure and Soil Quality of the Semiarid Loess Plateau, NW of China." Advanced Materials Research 183-185 (January 2011): 310–13. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.310.

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Reaumuria soongorica is the main dominant and constructive species of the desert shrub vegetation in the northwestern of China. The informations about changes in soil quality and vegetation structure togethor are available, which can provide valuable insights into the development of sustainable ecological systems that optimize production and maintain high environmental quality, but the variety of the plant community structure associate with dynamics of soil nutrient and microbial biomass are little known. In this study, five coverage levels of R. soongorica community were determined, while soi
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Xu, Tingting, Rong Zhang, Yang Zhang, Xiaojun Wang, Zhengpeng Li, and Yajun Gao. "Long-Term Effects of Potassium Fertilization and Wheat Straw Return on Cropland Soil Fertility and Microorganisms in the Qinghai–Tibet Plateau." Agronomy 15, no. 3 (2025): 742. https://doi.org/10.3390/agronomy15030742.

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Imbalanced fertilization and inadequate of straw return have led to soil potassium (K) depletion and fertility decline in croplands of the Qinghai–Tibet Plateau. However, how these changes affect soil microbial communities remains unclear. We analyzed soil properties, microbial biomass carbon and nitrogen, enzyme activities, and microbial communities in a long-term field experiment initiated in 1992 with K fertilization and varying wheat straw return amounts. Long-term K application significantly reduced microbial biomass carbon (MBC) and bacterial species richness and inhibited positive bacte
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Tang, Liuyan, Lin Chen, and Zhen’an Yang. "Artificial Measures Are Not Necessarily Better Than Natural Recovery for the Extremely Degraded Alpine Meadow: The Results of Simulated Degradation Restoration After Three Years." Journal of Biobased Materials and Bioenergy 15, no. 2 (2021): 224–30. http://dx.doi.org/10.1166/jbmb.2021.2041.

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Natural and artificial restoration measures are widely used to restore degraded ecosystems, such as degraded alpine meadow. The objective of this research was to evaluate the advantages and disadvantages of natural and artificial measures for extremely degraded alpine meadows. We removed the surface soil (0–10 cm) of the alpine meadow to simulate the extremely degraded “black soil beach,” and set artificial measures (planting Festuca sinensis (E) and Elymus sibircus L. cv. chuan-cao No. 1 (F)) and natural recovery (N) (without any artificial auxiliary measures) in the northeastern part of the
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Kong, Hui, Liangyan Yang, Dan Wu, Juan Li, and Shenglan Ye. "Ditch control and land reclamation promote vegetation recovery in Loess Plateau." Mathematical Biosciences and Engineering 21, no. 3 (2024): 3784–97. http://dx.doi.org/10.3934/mbe.2024168.

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<abstract> <p>This study aimed to assess the impact of land consolidation projects and climate change on changes in vegetation in the Loess Plateau during 2012–2021. The study also explored the impacts of human activities and climate change on the ecological quality of the Loess Plateau during this period. The spatial and temporal normalized difference combined meteorological monitoring data, project data, and normalized difference vegetation index (NDVI) data that was used to create the vegetation index dataset spanning from 2012–2021. The study discussed and assessed the effectiv
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Xu, Bo, Jinniu Wang, Ning Wu, Yan Wu, and Fusun Shi. "Seasonal and interannual dynamics of soil microbial biomass and available nitrogen in an alpine meadow in the eastern part of Qinghai–Tibet Plateau, China." Biogeosciences 15, no. 2 (2018): 567–79. http://dx.doi.org/10.5194/bg-15-567-2018.

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Abstract. Soil microbial activity varies seasonally in frozen alpine soils during cold seasons and plays a crucial role in available N pool accumulation in soil. The intra- and interannual patterns of microbial and nutrient dynamics reflect the influences of changing weather factors, and thus provide important insights into the biogeochemical cycles and ecological functions of ecosystems. We documented the seasonal and interannual dynamics of soil microbial and available N in an alpine meadow in the eastern part of Qinghai–Tibet Plateau, China, between April 2011 and October 2013. Soil was col
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Dissertations / Theses on the topic "Plateau de Mbé"

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Djondo, Mathurin Yves. "Propriétés d'échange ionique des sols ferrallitiques argileux de la vallée du Niari et sableux du plateau de Mbe-Bateke au Congo : application à la correction de leur acidité." Paris 12, 1994. http://www.theses.fr/1994PA120035.

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L'etude de l'acidite des sols et de sa correction a porte sur les sols ferrallitiques de la vallee du niari et du plateau de mbe-bateke au congo. Les observations ont ete realisees respectivement a mantsoumba sur un site sous culture mecanisee de manioc depuis 15 ans et au pk 45, apres trois ans de culture a base de manioc. Apres la presentation des sols acides d'interet agricole dans leur contexte naturel, ce travail a procede a une premiere evaluation des pratiques utilisees dans la correction de l'acidite, notamment le recours au calcaire broye de madingou. Grace a des observations et prele
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Cao, Yingchen. "Examinations of the shear stress on MBR-membrane plates by a single bubble using CFD." Master's thesis, 2016. https://tuprints.ulb.tu-darmstadt.de/5273/1/Abschlussarbeit%20Cao%20Yingchen%20Final.pdf.

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Nowadays the use of membrane filtration process is rapidly increasing in industrial fields, especially in the field of water and wastewater treatment. Aeration is one of the most important processes in MBR systems. The cost of aeration is the main operating cost. It can provide the biomass with oxygen and prevent them from settling down. Besides, the shear stress created by the aeration process can scour the solid from the membrane surface to control the growth of cake layer and increase the filtration flux. At the same time computational fluid dynamics (CFD) has become a leading modeling a
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Lo, Chin-Chung, and 羅欽鍾. "Use of PTFE membrane as the UF in MBR system : a study of plate fouling." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/29191892332830218939.

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碩士<br>國立交通大學<br>工學院永續環境科技學程<br>104<br>From this study , we can understand the adaptability of treating high-carbon high-nitrogen wastewater by MBR , the continuous system operating results and the favorable resistance of new type PTFE. This research included two stage , in the first stage , fixing a PTFE membrane and a PVDF membrane in the reactor which volume is 25 L, then pooled into aerobic sludge and the reactor was fed with anaerobic digestion wastewater which was stored at 4℃. The flux was controlled at 10 LMH and started the experiment for 71 hours continuously. The second stage is a pi
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Book chapters on the topic "Plateau de Mbé"

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Arcani, Bianca Cristina Melo, and Deise Helena Baggio Ribeiro. "Evaluation of the Antimicrobial Potential of Seeds Extracts from Fruits of the Myrtaceae Family." In Métodos Microbiológicos Tradicionais e Avançados para a Segurança de Alimentos. Editora Científica Digital, 2025. https://doi.org/10.37885/250519354.

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Objective: Fruit seeds, often discarded as waste by the food industry, are underutilized source of bioactive compounds. While the antimicrobial activity of Myrtaceae species leaves is well known, few studies have investigated its seeds for this purpose. This study evaluated the antimicrobial potential of hydroalcoholic extracts from seeds of cambuci (Campomanesia phaea), grumixama (Eugenia brasiliensis), jabuticaba (Plinia cauliflora), and pitanga (Eugenia uniflora). The Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were determined to Bacillus cereus, Cand
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Conference papers on the topic "Plateau de Mbé"

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Liu, Song, Hongmin Li, and Minel J. Braun. "Experimental Study on Skin Friction Reduction With Micro-Blowing." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56218.

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Reducing skin friction, such as friction on a car hood or a plane wing, can significantly reduce the drag force and decrease specific fuel consumption. Many techniques and methods have been tried. The Micro-blowing Technique (MBT) is an innovative way to reduce skin friction. Suggested by early research in boundary layer injection in 1950s, MBT was actually brought to effective use in 1994 by Hwang [1]. The basic idea is that by blowing fluid, same as or different from the mainstream flow, at an angle with that of the main flow, a decrease in the velocity gradient at the wall can be achieved,
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Messologitis, Katerina, Larry Morris, Yasushi Terao, et al. "RO Fouling Assessment of MBR-RO Trains using Flat-Plate MBR Membranes." In WEFTEC 2024. Water Environment Federation, 2024. http://dx.doi.org/10.2175/193864718825159588.

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Gür, C. Hakan, Gökhan Erian, Caner Batıgün, and İbrahim Çam. "Nondestructive Monitoring of Variations of Residual Stresses in Steel Weldments by Magnetic Barkhausen Noise Method." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97495.

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Variations of surface residual stresses as a function of weld runs in API 5L X70 steel plates were non-destructively monitored by Magnetic Barkhausen Noise (MBN) method. After each weld run, MBN signal and hardness distributions were recorded. MBN signals were converted into stress values by using a specific calibration procedure. The results were analyzed by considering microstructure investigations and hardness measurements, and then, they were compared with the results of X-ray diffraction measurements. MBN method seems to be a good candidate for monitoring the variation of surface residual
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Hammad Ali, Syed Muhammad, Ayemon Malik, Syed Mohammad Amir, et al. "Efficacy of (Liquid Latex) in Stabilizing Highly Dispersive Clay of Murree Formation in Potwar Plateau Region of Pakistan." In SPE/PAPG Pakistan Section Annual Technical Symposium and Exhibition. SPE, 2025. https://doi.org/10.2118/226834-ms.

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Abstract The process of drilling is full of challenges in the Murree Formation in the Potwar Plateau Region of Northern Pakistan. The challenges occur because of the area's high dispersive nature. It is tectonically disturbed area with multiple localized field faults. Top parts encounter water kicks, losses while drilling deeper in sections and sometime simultaneous loss and kicks scenarios costs remarkably high NPT to the companies. While dealing with these issues highly reactive and dispersive nature of clay create the multiple drilling issues and it to take months to complete the section. D
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Soccolich, C. E., M. N. Islam, and K. R. German. "Extended tuning range for a passively mode-locked NaCl color-center laser." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.mb4.

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We have doubled the tuning range of a passively mode-locked NaCl color-center laser by introducing a low-loss intracavity frequency filter and properly preparing the NaCl gain crystal. By using a collection of bulk and multiple-quantum-well III–V saturable absorbers and II–VI quantum-well saturable absorbers, we obtained passive mode-locked operation over the wavelength range of 1.5–1.7 µm. To provide sufficient wavelength restriction without introducing excess bandwidth limiting or loss, we replaced the biréfringent plate of previous systems1 with a tunable frequency filter,2 formed by a pair
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Ohyama, Nagaaki, Isao Ichimura, Ikuo Yamaguchi, Toshio Honda, and Jumpei Tsujiuchi. "A Dynamic Zone Plate Interferometer for Measuring Aspherical Surfaces." In Holography. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/holography.1986.mb1.

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This paper proposes a dynamic zone plate interferometer (DZPI), which has a possibility of measuring aspherical surfaces without the need of either a standard surface or of a computer generated holograms (CGH). The accuracy of surface error measurments can be improved by using a fringe analysis method up to about λ/100. An experimantal result is also presented.
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Chao, Y. F., and W. F. Hsieh. "Using flow-induced birefringence to visualize the flow." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mb4.

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By introducing a quarterwave plate into a video polarimeter, we are able to extract all Stokes parameters of light scattered from any sample.2 After mapping out the degree of polarization of a linearly polarized light transmitted through a polycarbonate plate, we can observe the flow lines from the contour of its degree of polarization. In flows, the axisymmetrical particles tend to be oriented along the direction of flow, and are usually used as seeds for flow visualization. Since a PC-plate is constructed by long-chain polymers, the contour of its polarization properties can provide a visibl
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Meyers, Cedric J. G., Cristopher R. Freeze, Susanne Stemmer, and Robert A. York. "Voltage-Tunable Parallel-Plate Capacitors Fabricated on Low-Loss MBE-Grown BST." In 2018 IEEE/MTT-S International Microwave Symposium - IMS 2018. IEEE, 2018. http://dx.doi.org/10.1109/mwsym.2018.8439491.

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Smith, Robin. "Diffractive Optical Elements Fabricated by Electron Beam Lithography." In Difraction Optics: Design, Fabrication, and Applications. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/do.1992.mb1.

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In recent years we have studied binary amplitude diffractive optical elements fabricated by means of electron beam lithography in the form of opaque chrome rulings on glass substrates and binary phase elements produced from these by contact copying into photoresist. We have investigated a range of imaging structures including zone plates, diffractive axicons, Dammann gratings and elements designed for optical testing. We are currently developing elements to generate particular aberrated wavefronts for the direct recording of volume diffractive elements in DCG and elements to generate curved li
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Ku¨bler, Lars, Peter Eberhard, and Johannes Geisler. "Flexible Multibody Systems With Large Deformations Using Absolute Nodal Coordinates for Isoparametric Solid Brick Elements." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48303.

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In this paper a formulation for flexible Multibody Systems (MBS) is proposed where flexible bodies are described using absolute coordinates for isoparametric brick elements. The use of absolute coordinates allows for large deformations and provides an accurate description of rigid body motion and inertia in the case of large rotations without additional considerations. Further, constant mass matrices are obtained for isoparametric elements. Brick elements are important, e. g. if general solid bodies with low stiffness, i. e. not negligible large deformations, are part of the MBS and cannot be
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