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Granulometry Assessment of Lom Pangar Dam Sediments (East-Cameroon)

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Journal of Geoscience and Environment Protection 2024年第6期12卷 207-231页

作者： Rodrigue Fotie Lele Mihaela Amalia Diminescu Issoufou Ouedraogo annette Madelene Dăncila Souleymane Pelede Alphonse Emadak Martin Lompo Department of Geology University Joseph Ki Zerbo Ouagadougou Burkina Faso Department of Water and Energy Green Heart International Bafoussam Cameroon Department of Hydraulic Machineries and Environmental Engineering National University of Science and Technology Politehnica Bucharest Bucharest Romania Department of Mining Engineering University Yembila-Abdoulaye-Toguyeni Fada NGourma Burkina Faso Department of Inorganic Chemistry University of Yaound I Yaound Cameroon

The Lom Pangar dam, the largest reservoir in Cameroon with a storage capacity of 6 km3 and a 30 MW hydropower plant, primarily regulates the hydrologic regime of the Sanaga River to maintain hydropower efficiency during dry seasons and enhance downstream hydropower plant performance. Understanding and managing sediments are crucial for the sustainability of dams, as indicated by numerous studies. This study assessed the granulometry of the sediments transported across the reservoir. For that purpose, 6 samples of fresh sediments were collected in the lacustrine and transitional sections of the reservoir using the standard method. Particles size was assessed using the laser diffusion technic after a 3 mm sieving. Various granulometric parameters were derived from the literature to analyze and characterize those sediments. Results show that silts are more than 70% of particles size and range between 2.19 - 60.26 µm. Size distribution also shows the same trend with D75 less than 51 µm. This is confirmed by the low values of Inman Skewness SkΦ (−0.168 to 0.303). The Sorting index S0 ranges from 0.31 to 0.53 µm, showing a very well-sorted sediments, aligning with low values of Krumbein index (0.906 - 1.683) that express the low heterometry of the particles. The consequence on the dam will be a quick clogging of the bottom of the reservoir. Their pH varies from 7.0 to 7.5. It also appears that the sandy fraction trend is higher in the right bank of the dam and reaches 22% on the right bank of Pangar River due to crystalline geology. Fraction greater than 3000 µm is negligible. The management of the dam has to keep attention to these results as siltation may close the safety outlet of the dam, damage turbines, and provoke recurrent technical and safety issues. Further, the clogging of the bottom of the reservoir may lead to an ecological problem with the limitation of hyporheic flow. Thus, water exchange with the underground water table and the natural purification of wate

关键词： Lom Pangar Dam Sediments Granulometry Sustainability Hydropower Dam Safety

Automatic object annotation in streamed and remotely explored large 3D reconstructions

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Computational Visual Media 2021年第1期7卷 71-86页

作者： Benjamin Holler annette Mossel Hannes Kaufmann Institute of Visual Computing and Human-Centered Technology Vienna University of TechnologyFavoritenstraβe 9-11/193/06A-1040 ViennaAustria

We introduce a novel framework for 3 D scene reconstruction with simultaneous object annotation,using a pre-trained 2 D convolutional neural network(CNN),incremental data streaming,and remote exploration,with a virtual reality *** enables versatile integration of any 2 D box detection or segmentation *** integrate new approaches to(i)asynchronously perform dense 3 D-reconstruction and object annotation at interactive frame rates,(ii)efficiently optimize CNN results in terms of object prediction and spatial accuracy,and(iii)generate computationally-efficient colliders in large triangulated3 D-reconstructions at run-time for 3 D scene *** method is novel in combining CNNs with long and varying inference time with live 3 D-reconstruction from RGB-D camera *** further propose a lightweight data structure to store the 3 D-reconstruction data and object annotations to enable fast incremental data transmission for real-time exploration with a remote client,which has not been presented *** framework achieves update rates of 22 fps(SSD Mobile Net)and 19 fps(Mask RCNN)for indoor environments up to 800 m^(3).We evaluated the accuracy of 3 D-object *** work provides a versatile foundation for semantic scene understanding of large streamed3 D-reconstructions,while being independent from the CNN’s processing *** code is available for non-commercial use.

关键词： dense 3D reconstruction object detection CNN distributed virtual reality

Stark–Zeeman line-shape model for multi-electron radiators in hot dense plasmas subjected to large magnetic fields

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Matter and Radiation at Extremes 2022年第1期7卷 35-46页

作者： Sandrine Ferri Olivier Peyrusse annette Calisti Aix-Marseille Universit´e CNRSPIIMUMR7345MarseilleFrance

We present a Stark–Zeeman spectral line-shape model and the associated numerical code,PPPB,designed to provide fast and accurate line shapes for arbitrary atomic systems for a large range of plasma *** is based on the coupling of the PPP code-a Stark-broadened spectral line-shape code developed for multi-electron ion spectroscopy in hot dense plasmas-and the MASCB code developed recently to generate B-field-dependent atomic *** latter provides energy levels,statistical weights,and reduced matrix elements of multi-electron radiators by diagonalizing the atomic Hamiltonian that includes the well know B-dependent *** are then used as inputs to PPP working in the standard line-broadening approach,i.e.,using the quasi-static ion and impact electron *** effects of ion dynamics are introduced by means of the frequency fluctuation model,and the physical model of electron broadening is based on the semi-classical impact approximation including the effects of a strong collision term,interference,and cyclotron ***,to account for polarization effects,the output profiles are calculated for a given angle of observation with respect to the direction of the magnetic *** potential of this model is presented through Stark–Zeeman spectral line-shape calculations performed for various experimental conditions.

关键词： field. Zeeman magnetic

Compact High-Velocity Atmospheric Pressure Dielectric Barrier Plasma Jet in Ambient Air

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Plasma Science and Technology 2015年第1期17卷 14-19页

作者： annette MEINERS Michael LECK Bernd ABEL University of Applied Science and Arts Department of Science and Technology Leibniz-Institut für Oberflachenmodifizierung(IOM) Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universitat Leipzig

In this paper,a non-thermal atmospheric pressure plasma jet at high streaming velocity operating with ambient air is *** the present technological approach,the employment of air poses a significant *** high oxygen concentration in air results in a reduced concentration of reactive species in combination with a short species *** plasma jet assembly presented here contains a special dielectric barrier with a high secondary emission *** this way,the electron density and in turn the density of reactive species is *** addition,the plasma jet assembly is equipped with a short *** leads to a higher voltage across the discharge gap and in turn to an increased density of reactive plasma *** plasma jet is formed within and emitted by a small conical nozzle.A high-speed gas flow with gas velocity of 340 m/s was achieved at the end of the *** the jet the concentration of toxic and unwanted neutral plasma species like O3 or NOx is significantly reduced because of the shorter residence time within the *** range of short-lived active plasma species is in turn considerably *** jet efficiency and action range measured through the oxidation of a test surface were determined by measuring the increase of surface tension of a polypropylene substrate via contact angle measurements after plasma *** modeling of the plasma plume indicates that oxygen atoms are in fact the main active species in the plasma plume.

关键词： plasma jet atmospheric plasma dielectric barrier radicals plasma modeling

A case to be made: theoretical and empirical arguments for the need to consider fatigue in post-stroke motor rehabilitation

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Neural Regeneration Research 2015年第8期10卷 1195-1197页

作者： annette Sterr Leonardo Furlan School of Psychology University of Surrey Department of Neurology University of Sao Paulo

Motor rehabilitation after hemiparetic stroke is essential to soften physical disability（Furlan,2014）.Nevertheless,current interventions are mostly designed for well recovered individuals and often exclude stroke survivors with rather limited motor ability（Sterr and Conforto,2012）.Given that,and further advancing our research agenda in this arena（Sterr et al.,2002;Sterr and Freivogel,2003,2004;Sterr,2004;Sterr et al.,2006;Sterr and Saunders,2006）,

关键词： rehabilitation fatigue disability Saunders arena advancing mostly agenda likely functioning

Large-scale spatial synchrony and the stability of forest biodiversity revisited

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Journal of Plant Ecology 2012年第1期5卷 52-63页

作者： annette M.Ostling Department of Ecology and Evolutionary Biology University of Michigan830 North University AvenueAnn ArborMI 48109-1048USA

Aims Mechanisms contributing to species coexistence have at least one of two modes of action:(i)stabilization of populations through restoring forces and(ii)equalization of fitness across individuals of different ***,ecologists have begun gleaning the relative roles of these by testing the predictions of neutral theory,which predicts the properties of communities under pure fitness *** null hypothesis was rejected for forests of southern Ontario based on large-scale(;100 km)spatial synchrony evident in the fossil pollen record over the entire Holocene,and the argument that a species’relative abundance would instead vary independently at such distances in the absence of stabilizing *** test of neutral theory was criticized based on the idea that the synchrony might be produced by dispersal ***,I revisit this test of neutral theory by explicitly calculating the synchrony expected in these forests using a novel simulation method enabling examination of the distribution of a species over large spatial and temporal *** A novel neutral simulation algorithm tracking only the focal species was used to calculate the neutral expectation for spatial synchrony properties examined empirically by Clark and MacLachlan[(2003)Stability of forest *** 423:635–8]using fossil pollen data from eight lake *** coefficient of variation(CV)in a species’relative abundance across the eight sites(initiated at about 10%with a small CV)was calculated for 10 runs over a 10000 year time *** CV reflects the level of spatial synchrony in that less synchronous dynamics should lead to more variation across space(a higher equilibrium CV),and in particular,a greater increase in the CV over time from a small initial value.A‘two dimensional t’fat-tailed dispersal kernel was assumed with parameters set to the median derived from seed trap data for deciduous wind-dispersed *** of results to assumed dispersal

关键词： neutral theory community dynamics turnover

Speech by annette Kennedy, President of International Council of Nurses at Leadership for Change Programme Launching Ceremony in Beijing 2017

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International Journal of Nursing Sciences 2017年第3期4卷 215-216页

作者： annette Kennedy International Council of Nurses

Good morning, Ms Yanhong Guo, Deputy Director of Medical Administration, NHFPC, Dr Xiuhua Li, President of CNA, Board members, Mr Edward Zhou, General Manager Ethicon and Johnson & Johnson Representatives, Regional CNA representatives, ICN trainers, Marcia Petrini & Kristine Qureshi, and all the program participants, and other guests.

关键词： Beijing Director Programme

The role of endosomal cholesterol trafficking protein, StAR-related lipid transfer domain 3 （StarD3/MLN64）, in BRIN-BD11 insulinoma cells

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Protein & Cell 2016年第11期7卷 833-838页

作者： Joana Borges Pinto annette Graham Department of Life Sciences School of Health and Life Sciences Glasgow Caledonian University Glasgow G4 0BA UK WolfsonWohl Cancer Research Centre Institute of Cancer Sciences University of Glasgow Switchback Road Bearsden Glasgow G61 1QH UK

Dear Editor, Insulin secretion by pancreatic β-cells is modulated by altering the cellular content and distribution of cholesterol, which is tightly regulated by a network of transcription factors, enzymes, receptors, transporters and cholesterol trafficking proteins. Inhibition of cellular biosynthesis by ＇statin＇ drugs, or depletion of plasma membrane cholesterol by methyl-β-cyclodextrin （MCD）, reduce glucose-stimulated insulin secretion （GSIS） and content in β-cells and islets;

关键词： Cholesterol Lutein Insulin Release Cholesterol Efflux Cholesterol Depletion

Traces of the Person： Max Scheler＇s and Paul Ricoeur＇s Attempts on Personal Ethics

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Frontiers of Philosophy in China 2015年第1期10卷 130-147页

作者： annette Hilt Department of Philosophy Johannes Gutenberg University of Mainz Mainz 55099 Germany

To encounter a fellow-being does not mean only to see her face, to notice the color of her eyes, but to meet her eyes and to be addressed by her. Who one is irreducible to any objective property or value, and likewise cannot be comprehended through propositional statements in the manner of ＂talking about ...＂ something. Rather, such comprehension demands an account of giving way to the appearance of the other as other. This account, prominently linked to E. Levinas＇＂ethics as first philosophy,＂ has also been developed as phenomenological personalism. While Max Scheler developed his ＂Ethical Personalism＂ within his material Value Ethics, his Philosophy of Fellow-Feeling and in his late Philosophical Anthropology of human spirit, Paul Ricoeur develops his personalism through different approaches： from his early attempts on need and desire as the affective basis of our values to the perspective on the particular way we lead our lives in narratively constituting our personal identity, and finally to his concept of recognition. Reconstructing personalism as a philosophy of discovering the other person in her otherness and as a concept of social practice are the aims of this paper.

关键词： Scheler Ricoeur person fellow-feeling narrativity