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Aviary measurements of dominance and affiliation between members of mixed-species birds flocks in southern China

Avian Research 2023年第4期14卷 593-599页

作者： Jichong Chen estelle Meaux Caiyun Li Aiwu Jiang Eben Goodale Guangxi Key Laboratory for Forest Ecology and Conservation College of ForestryGuangxi UniversityNanning530004China Division of Ecology and Biodiversity School of Biological ScienceThe University of Hong KongHong KongChina Department of Health and Environmental Science Xi’an Jiaotong-Liverpool UniversitySuzhou215123China

In mutualistic interactions,all parties are usually considered to benefit;yet there may be asymmetries in mutualisms where some partners/individuals benefit more than *** is thought to be the case in mixedspecies flocks of birds,where following species are thought to benefit more than leading species,and leading species may not be able to escape the association if they are subordinate to other *** measured dominance and affiliation patterns of a mixed-species flock system of southern China in an aviary where these variables could be measured in a standardized *** eight wild-caught flocks,the leading species,David’s Fulvetta(Alcippe davidi),was usually among the more subordinate flock members(ranking 9 of 13 species,with the the most dominant species ranked number one,and dominance measured by normalized David’s scores).Dominance was strongly influenced by body mass,and not by bill length or the number of *** fulvettas in particular tended to be among the most subordinate individuals in the *** was evidence of a negative relationship between a species pair’s affiliation,measured as the percentage of all observations in which these two species were found perching together,and their difference in ranking in the dominance hierarchy,particularly when some ground species,which are not likely to remain in flocks long term,were removed from the *** pairs that had more pronounced differences in their dominance rankings were less likely to be affiliated,which is consistent with the idea that subordinate species may avoid ***’s Fulvetta is a strong information provider,so other species are likely benefitted in this *** data suggest one reason that fulvettas stay in flocks is that they may be subordinate and therefore have little control over who associates with them.

关键词： Dominance hierarchy Keystone species Mixed-species animal groups Sociality

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Role of lipid-lowering agents in the management of diabetic retinopathy

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World Journal of Diabetes 2017年第1期8卷 1-6页

作者： estelle Ioannidou Vasilis-Spyridon Tseriotis Konstantinos Tziomalos First Propedeutic Department of Internal Medicine Medical SchoolAristotle University of ThessalonikiAHEPA Hospital54636 ThessalonikiGreece

Diabetic retinopathy affects a substantial proportion of patients with diabetes mellitus(DM) and is the leading cause of blindness in working-aged adults. Even though the incidence of diabetic retinopathy has declined in the last decades, its prevalence increased and is expected to rise further as a result of the increasing incidence of type 2 DM(T2DM) and the longer life expectancy of patients with DM. The pathogenesis of diabetic retinopathy is multifactorial. Some observational studies suggested an association between dyslipidemia and the development and progression of retinopathy in patients with DM but others did not confirm this association. Regarding lipid-lowering agents, studies that evaluated the role of statins in the management of these patients are mostly small and yielded discrepant results. Large randomized studies with statins in patients with T2DM showed no benefit of these agents on diabetic retinopathy but were not designed to address this effect. In contrast, both preclinical data and two large randomized controlled studies, the FIELD and the ACCORD trial, showed that fenofibrate delays the progression of diabetic retinopathy. Even though the mechanisms underpinning this favorable effect are not entirely clear, these findings suggest that fenofibrate might represent a useful tool for the management of diabetic retinopathy.

关键词： Diabetes mellitus Lipid-lowering agents Statins Fibrates Ezetimibe Colesevelam Retinopathy

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HPV/HBV or HPV/HCV Co-Infections in Women Treated for Chronic Hepatitis at Hôpital Saint Camille in Ouagadougou, Burkina Faso

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American Journal of Molecular Biology 2024年第1期14卷 1-12页

作者： estelle Ouédraogo Théodora Mahoukèdè Zohoncon Bagora Bayala Prosper Bado Rose P. Clémence Da Rogomenoma Alice Ouedraogo Ina Marie Angèle Traoré Punya Akouélé Kuassi-Kpede Samiratou Ouédraogo Essi Etonam Dovo Lassina Traoré Albert Théophane Yonli Florencia Wendkuuni Djigma Olga Mélanie Lompo Jacques Simpore Laboratory of Molecular Biology and Genetics (LABIOGENE) University Joseph KI-ZERBO Ouagadougou Burkina Faso Centre of Biomolecular Research Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Hô spital Saint Camille of Ouagadougou (HOSCO) Ouagadougou Burkina Faso Faculty of Health University Saint Thomas d’Aquin (USTA) Ouagadougou Burkina Faso Ecole Normale Supérieure Koudougou Burkina Faso Chair “Research and Action Against Cancer” Département de Santé Publique Training and Research Unit in Health Sciences University Joseph KI-ZERBO Ouagadougou Burkina Faso Observatoire National de la Santé de la Population Institut National de Santé Publique Ouagadougou Burkina Faso The Department of Epidemiology Biostatistics and Occupational Health School of Population and Global Health Montreal Canada Laboratory of Pathological Anatomy and Cytology University Joseph KI-ZERBO Ouagadougou Burkina Faso

Introduction: Cervical cancer is a public health concern and is mainly caused by Human papillomaviruses (HPV). In many parts of the world, studies are being carried out to understand the different genotypes to better tackle this issue. We conducted a study to determine the prevalence of HPV genotypes in women with chronic hepatitis B or C infection, co-infected or not with HIV, treated at the Hôpital Saint Camille in Ouagadougou (Burkina Faso). Methods: This study was conducted from April to July 2023, including 100 women in gastroenterology at Hôpital Saint Camille. A questionnaire on their socio-demographic and life style was administrated;and endocervical samples were collected using sterile swabs and then sent to Centre of Biomolecular Research Pietro Annigoni (CERBA). HPV molecular detection and genotyping were performed by PCR and hybridization using the HPV Direct Flow Chips kit. Data were analysis using chi square test or Fischer’s exact test with a significance threshold for p Results: The prevalence of HPV infection was 28% (28/100) on the sample of women tested. The most frequent genotypes were HPV 52 (8.33%), followed by HPV 18 and 68 (6.25% each) for high-risk HPVs, and HPV 6, 44/55 and 62/81 (8.33% each) for low-risk HPVs. Conclusion: This study, the first of its kind in Burkina Faso on this group of the population, reveals that the most frequent genotypes found in this study are not included in the vaccine available in Burkina Faso (Gardasil®4).

关键词： Human Papillomavirus Cervical Cancer Hepatitis Human Immunodeficiency Virus Burkina Faso

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Review:DNA-damage response network at the crossroads of cell-cycle checkpoints, cellular senescence and apoptosis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第6期8卷 377-397页

作者： SCHMITT estelle PAQUET Claudie BEAUCHEMIN Myriam BERTRAND Richard Notre Dame Hospital and Montreal Cancer Institute Research Centre of University of Montreal Hospital Centre (CRCHUM) Montreal (Que) H2L 4M1 Canada Notre Dame Hospital and Montreal Cancer Institute Research Centre of University of Montreal Hospital Centre (CRCHUM) Montreal (Que) H2L 4M1 Canada Medicine Department University of Montreal Montreal (Que) H3C 3J7 Canada

Tissue homeostasis requires a carefully-orchestrated balance between cell proliferation, cellular senescence and cell death. Cells proliferate through a cell cycle that is tightly regulated by cyclin-dependent kinase activities. Cellular senescence is a safeguard program limiting the proliferative competence of cells in living organisms. Apoptosis eliminates unwanted cells by the coordinated activity of gene products that regulate and effect cell death. The intimate link between the cell cycle, cellular senes- cence, apoptosis regulation, cancer development and tumor responses to cancer treatment has become eminently apparent. Extensive research on tumor suppressor genes, oncogenes, the cell cycle and apoptosis regulatory genes has revealed how the DNA damage-sensing and -signaling pathways, referred to as the DNA-damage response network, are tied to cell proliferation, cell-cycle arrest, cellular senescence and apoptosis. DNA-damage responses are complex, involving “sensor” proteins that sense the damage, and transmit signals to “transducer” proteins, which, in turn, convey the signals to numerous “effector” proteins implicated in specific cellular pathways, including DNA repair mechanisms, cell-cycle checkpoints, cellular senescence and apoptosis. The Bcl-2 family of proteins stands among the most crucial regulators of apoptosis and performs vital functions in deciding whether a cell will live or die after cancer chemotherapy and irradiation. In addition, several studies have now revealed that members of the Bcl-2 family also interface with the cell cycle, DNA repair/recombination and cellular senescence, effects that are generally distinct from their function in apoptosis. In this review, we report progress in understanding the molecular networks that regulate cell-cycle checkpoints, cellular senescence and apoptosis after DNA damage, and discuss the influence of some Bcl-2 family members on cell-cycle checkpoint regulation.

关键词： DNA-damage response network Cell cycle Cellular senescence Apoptosis Bcl-2 family

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Core-shell particles of C-doped CdS and graphene: A noble metal-free approach for efficient photocatalytic H_(2) generation

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Green Energy & Environment 2020年第4期5卷 461-472页

作者： Muhammad Zubair estelle Marie M.Vanhaecke Ingeborg-Helene Svenum Magnus RФnning Jia Yang Department of Chemical Engineering Norwegian University of Science and Technology(NTNU)Sem Sælands vei 4TrondheimNO7491Norway SINTEF Industry P.O.Box 4760 TorgardenTrondheimNO7465Norway

To achieve efficient photocatalytic H_(2) generation from water using earth-abundant and cost-effective materials,a simple synthesis method for carbon-doped CdS particles wrapped with graphene(C-doped CdS@G)is *** doping effect and the application of graphene as cocatalyst for CdS is studied for photocatalytic H_(2) *** most active sample consists of CdS and graphene(CdS-0.15G)exhibits promising photocatalytic activity,producing 3.12 mmol g^-(1) h^-(1) of H_(2) under simulated solar light which is^4.6 times superior than pure CdS nanoparticles giving an apparent quantum efficiency(AQY)of 11.7%.The enhanced photocatalytic activity for H_(2) generation is associated to the narrowing of the bandgap,enhanced light absorption,fast interfacial charge transfer,and higher carrier density(N_(D))in C-doped CdS@G *** is achieved by C doping in CdS nanoparticles and the formation of a graphene shell over the C-doped CdS *** stability test,the spent catalysts sample was also characterized to investigate the nanostructure.

关键词： C-doped CdS@G Core-shell nanostructure Photocatalytic H2 generation Graphene Carbon doping in CdS Bandgap narrowing

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Experimental Study on Slope Stability of Nanfen Open-Pit Iron Mine

Experimental Study on Slope Stability of Nanfen Open-Pit Iro...

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作者： Simedje Mawe estelle Manuella 绍兴文理学院

学位级别：硕士

边坡稳定性分析在露天铁矿中显得十分重要。在矿山工作区,边坡失稳会造成重大的经济损失和安全问题。为评价露天矿边坡的安全经济设计,进行了边坡稳定性分析。边坡稳定性分析的主要目的是寻找危险区域,研究潜在的破坏机制,评估不同触发... 详细信息

边坡稳定性分析在露天铁矿中显得十分重要。在矿山工作区,边坡失稳会造成重大的经济损失和安全问题。为评价露天矿边坡的安全经济设计,进行了边坡稳定性分析。边坡稳定性分析的主要目的是寻找危险区域,研究潜在的破坏机制,评估不同触发机制对边坡的敏感性,设计安全、可靠、经济的最优边坡。实验以南芬露天矿工程地质背景为背景,试图研究南芬露天矿滑坡机理及滑坡预警系统的有效性。本实验所用的系统实验设备主要分为主设备和液压控制设备,以完成模型的搭建和逐级加载功能。整个系统是由深部岩土力学与地下工程国家重点实验室开发的深部地下工程破坏结构效应物理模型实验系统。该系统可用于研究洞室群、洞室群、边坡和基坑在不同地应力特征和岩体条件下的开挖锚固效果,并对方案进行比较,为工程设计和施工提供实验依据。目前已广泛应用于科研和教学部门。它是研究岩石工程和地质灾害的重要模拟试验系统。该系统由机械设备、液压控制系统、数据采集装置、模具、叉车五部分组成。

关键词：边坡稳定性物理模拟破坏机理

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Optimizing Degree Distributions of LT Anti-eavesdropping Based on Fountain Code

Optimizing Degree Distributions of LT Anti-eavesdropping Bas...

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作者： DIONNE JUDITH ATOME estelle 辽宁工业大学

学位级别：硕士

In today's rapidly developing information age,wireless communication has developed from the exchange of information between people to the ability to establish connections between everything,becoming the protagonist of the ***,its broadcast transmission method makes the information easy to be stolen by illegal eavesdroppers during the transmission process,which damages the basic rights of legal *** to the characteristics of low decoding overhead,low encoding and decoding complexity,and strong adaptability,LT codes have better anti-eavesdropping advantages in wiretapping channels,and the encoding method is one of the main factors affecting the performance of LT ***,in order to ensure the security of wireless transmission,from the perspective of physical layer channel coding,this paper takes LT code as the research object,studies its coding method,and proposes an improved method of LT code coding by reorganizing the RSD coding matrix with the best degree 1 to improve Anti-eavesdropping performance of LT codes in eavesdropping *** LT code adopts the BP decoding method,which starts to decode when it receives a code symbol of degree 1,while the traditional LT code generates a coding matrix based on the RSD degree distribution *** size distribution of the degree is random,if the encoding symbols of degree 1 are sent to the receiving end and the eavesdropper earlier,there is a possibility that the eavesdropper recovers the source encoding symbols before the legitimate receiver,so that the eavesdropper successfully steals *** this paper,aiming at the randomness of the moderate distribution of the coding matrix of the traditional LT code,an improved LT code coding method of coding matrix reorganization is proposed,and a new coding matrix is obtained by rearranging the columns in the coding matrix of the traditional LT code according to the degree value from large to small,aiming to move the coded symbols of degree

关键词： LT codes anti-eavesdropping encoding matrix recombination similar number loop decoding cost

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Zinc-mediated reactions on salicylaldehyde for Botrytis cinerea control

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Chinese Chemical Letters 2020年第3期31卷 706-710页

作者： Antoine Franche Claire Imbs Antoine Fayeulle Franck Merlier Muriel Billamboz estelle Léonard Sorbonne University Universitéde technologie de CompiègneESCOMEA TIMR 4297Centre de recherche de RoyallieuCS 6031960203 Compiègne cedexFrance ESCOM UTCEA TIMR 42971 allée du Réseau Jean-Marie Buckmaster60200 CompiègneFrance Sorbonne Universités Universitéde Technologie de CompiègneGénie Enzymatique et Cellulaire(GEC)UMR-CNRS 7025CS 6031960203 Compiègne CedexFrance Laboratoire de chimie durable et santé Yncrea Hauts-de-FranceHEI13 rue de Toul59046 Lille CedexFrance

Botrytis cinerea is a necrotrophic fungusth at a ffects various plant *** control is an ecessity and as much as possible,eco-friendly conditions and bioresources to obtain these chemicals should be *** this context,a series of products w as obtained from salicylaldehyde using zinc as a powerful reagent and tested for antifungal activity against Botrytis cinerea.

关键词： Salicylaldehyde Zinc-mediated reactions Green solvents Alkoxymethylphenol PEG-cresol Botrytis cinerea control

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Physico-Chemical Characterization of Some Honeys from the Savannah-Gallery Forest Complex and Primary Forest in Gabon

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Open Journal of Applied Sciences（应用科学） 2024年第7期 1904页

作者： Charline Obone Madi Guirema Abaker Silas Davy Mbadinga Boubala estelle Dumont Gino Boussiengui-Boussiengui Alexis Nicaise Lepengue

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Defining the Mitochondrial Stress Response in Arabidopsis thaliana

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Molecular Plant 2009年第6期2卷 1310-1324页

作者： Olivier Van Aken Botao Zhang Chris Carrie Vindya Uggalla Ellen Paynter estelle Giraud James Whelan ARC Centre of Excellence in Plant Energy Biology MCS Building M316 University of Western Australia 35 Stirling Highway Crawley 6009 Western AustraliaAustralia

To obtain a global overview of how mitochondria respond to stress, we aimed to define the plant mitochondrial stress response （MSR）. By combining a set of 1196 Arabidopsis thaliana genes that putatively encode mitochondrial proteins with 16 microarray experiments on stress-related conditions, 45 nuclear encoded genes were defined as widely stress-responsive. Using green fluorescent protein （GFP） fusion assays, the mitochondrial targeting of a large number of these proteins was tested, confirming in total 26 proteins as mitochondrially targeted. Several of these proteins were observed to be dual targeted to mitochondria and plastids, including the small heat shock proteins sHSP23.5 and sHSP23.6. In addition to the well defined stress components of mitochondria, such as alternative oxidases, nicotinamide adenine dinudeotide （NAD（P）H） dehydrogenases, and heat shock proteins, a variety of other proteins, many with unknown function, were identified. The mitochondrial carrier protein family was over-represented in the stress-responsive genes, suggesting that stress induces altered needs for metabolite transport across the mitochondrial inner membrane. Although the genes encoding many of these proteins contain common cis-acting regulatory elements, it was apparent that a number of distinct regulatory processes or signals likely triggered the MSR. Therefore, these genes provide new model systems to study mitochondrial retrograde regulation, in addition to the widely used alternative oxidase model. Additionally, as changes in proteins responsive to stress did not correlate well with changes at a transcript level, it suggests that post-transcriptional mechanisms also play an important role in defining the MSR.

关键词： enzymes genes green fluorescent protein heat shock proteins mitochondria oxidoreductases plant proteins plastids stress stress response Arabidopsis thaliana Genes Heat Shock Proteins Plastid stress response Arabidopsis thaliana Oxidoreductases Plant Proteins Proteins Enzymes Mitochondria Green Fluorescent Proteins

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