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Honeydew volatile emission acts as a kairomonal message for the Asian lady beetle Harmonia axyridis （coleoptera： coccinellidae）

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Insect Science 2012年第4期19卷 498-506页

作者： Pascal D. Leroy Stephanie Heuskin Ahmed Sabri Fran( ois J. Verheggen Julien Farmakidis georges lognay Philippe Thonart Jean-Paul Wathelet Yves Brostaux Eric Haubruge Departments of Functional and Evolutionary Entomology Departments of Analytical chemistry University of Liege Gembloux Agro-BioTech Walloon center of Industrial Biology University of Liege B40 4000 Sart-Tilman Departments of General and Organic chemistry Departments of Appfied Statistics Computer Science and Mathematics University of Liege Gembloux Agro-Bio Tech Gembloux Belgium

The Asian lady beetle Harmonia axyridis Pallas is considered as an invasive species in most territories where it has been introduced. Because aphid honeydew acts as an attraetant for many aphid predators and parasitoids, the objectives of this work were to collect and identify the volatile compounds released from the aphid excretory product to evaluate how these semiochemicals could affect the H. axyridis foraging behavior. Twelve volatile chemicals were identified from the Megoura viciae Buckton honeydew including four alcohols, three ketones, three aldehydes, a pyrazine and a monoterpene. The volatiles 3-methyl-l-butanol and 3-methyl-butanal were highlighted as the two most abundant semiochemicals released from the M. viciae honeydew. Vieia faba L. plants treated with crude honeydew attracted more than 80% of the tested individuals with 40% of attracted beetles located on the plant. Four volatile compounds （3-hydroxy-2-butanone, 3-methyl-butanal, 3-methyl-1-butanol and limonene） were also highlighted to attract more than 75% of the coccinellids toward the odor source and to locate about 35% of them on the plants. Limonene was the most efficient attractant since 89% of the H. axyridis responded to this odor. The use of the identified semiochemicals as well as the composition of an artificial honeydew could certainly be helpful to control the dispersal of the Asian lady beetle H. axyridis.

关键词： aphid honeydew attractant Harmonia axyridis kairomone semiochemicals

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Traditional Healer’s Medicinal Practice Survey and clinical Evidence Assessment of “YIKI”: An Antimalarial Phytomedicine Recipe from Bobo-Dioulasso, Burkina Faso

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Pharmacology & Pharmacy 2024年第7期15卷 248-267页

作者： Zachari Kabre Rakiswende Serge Yerbanga Aminata Fofana Roland Nâg-Tiero Meda Anyirekun Fabrice Some Alassane Haro Natacha A. J. A. Boro Fazhira B. Ye Benjamin Kouliga Koama Sami Eric Kam Eliasse Zongo Hadidjatou Belèm Windmi Kagambèga Florence Fournet georges A. Ouedraogo Jean-Bosco Ouedraogo Institut de Recherche en Sciences de la Sant Direction Rgionale de lOuest Bobo-Dioulasso Burkina Faso Laboratoire de Recherche et dEnseignement en Sant et Biotechnologies Animales Universit Nazi BONI Bobo-Dioulasso Burkina Faso Institut des Sciences et Techniques Bobo-Dioulasso Burkina Faso Laboratoire de Recherche en Bactriologie INSP/Centre MURAZ Bobo-Dioulasso Burkina Faso Maladies Infectueuses et Vecteurs: Ecologie Gntique Evolution et Contrle (MIVEGEC) Institut de Recherche pour le Dveloppement Universit de Monpellier Montpellier France

YIKI is an antimalarial phytomedicine used by a traditional healer to treat malaria in Bobo-Dioulasso. However, there is no scientific evidence to support its use by local populations. The aim of this study was to identify the medicinal practices of the healer holder of YIKI and assess the clinical evidence of its phytomedicine in the uncomplicated malaria treatment. Ethnomedical survey based on a semi-structured and open questionnaire was conducted from October to December 2019 with the healer. Malaria knowledge and diagnosis methods, patient treatment and monitoring, and recipe formulation steps were surveyed. Moreover, thick and thin blood smears were taken, haemoglobin levels and temperature of consenting patients were measured before treatment, mid-treatment and at the end of treatment. The survey revealed that the healer has a good knowledge of malaria symptoms and his diagnosis is based on observation and physical examination of patients. The healer’s malaria diagnosis was rudimentary and had accuracy problems, with only 62.79% of malaria cases confirmed by microscopy. The formulation of YIKI and its use to treat malaria follow a standard process for plant harvesting, powder quantities and posology, but do not use any reproducible parameters for dose adjustment. Forty-three patients diagnosed and treated by the healer participated in the study. Laboratory results revealed 27 Plasmodium falciparum infection cases, including 2 with parasitaemia ≥ 200,000 p/µl blood. 25 patients were selected for therapeutic evidence assessment. There was a 48% elimination of parasites, a 28% parasitaemia decrease without complete cure, with gametocytogenesis in some patients, and a 24% parasitaemia increase. Haemoglobin and temperature results suggested that YIKI was not cytotoxic and reduced fever. Encouraging preliminary results have been obtained, but in view of the low number of patients, further YIKI efficacy and toxicity studies will be necessary for patient safety.

关键词： Antimalarial-Phytomedicine Efficacy Traditional Practices Bobo-Dioulasso

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Larvicidal activity of Neem oil and three plant essential oils from Senegal against chrysodeixis chalcites(Esper, 1789)

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Asian Pacific Journal of Tropical Biomedicine 2018年第1期8卷 67-72页

作者： Saliou Ngom Raimundo cabrera Perez Ma Anta Mbow Rokhaya Fall Saliou Niassy Andreea cosoveanu Serigne Mbacké Diop El Hadji Barka Ndiaye Moussoukhoye Diop georges lognay Institut Sénégalais de Recherches Agricoles Unidad de Fitopatologia Facultad de Biología Universidad de la Laguna Département de chimie Faculté des Sciences et Techniques Université Cheikh Anta Diop de Dakar Development University of Pretoria Gembloux Agro-Bio Tech Université de Liège Chimie Analytique Department Agro Bio Tech

Objective: To evaluate the insecticide, larvicidal and repellent activity of the essential oils from callistemon viminalis, Melaleuca leucadendron, and Hyptis suaveolens against chrysodeixis chalcites and to compare it with neem oil(Azadirachta indica). Methods: The essential oils of the leaves of these aromatiques plants were extracted by steam distillation and contacts tests were carried out. Results: Essential oils in ethanol from callistemon viminalis showed a higher biological activity than the neem with 100% larval mortality at the concentration of 2 μg/m L for 6 h, 100% and 90% in ethanol from Melaleuca leucadendron and Hyptis suaveolens, respectively at the concentration of 4 μg/m L for 24 h. By inhalation, the essential oils from Melaleuca leucadendron and of Hyptis suaveolens were more effective with mortality rates of larvae 100% and 50% respectively at 2 μg/L air applied after 24 h. Nevertheless, the neem has shown to be a repulsive plant and anti-nutritional plant. A significant difference in the percentages of consumption between leaves treated with neem oil and the control samples was observed(Newman-Keuls test) except for Melaleuca leucadendron. conclusions: The results of the study highlight remarkable biocide, properties of tested extracts, which provides important opportunities for the development of biopesticides.

关键词： Plant extracts chemical constituents Insecticidal activity chrysodeixis

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Defining Velocity and Acceleration Ranges for Time-Motion Analysis from a 7-Sided Game in U11 Soccer Players Using Global Positioning System Devices:A case Study

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Journal of Science in Sport and Exercise 2023年第2期5卷 167-173页

作者： Abd-Elbasset Abaïdia Grégory Dupont georges Baquet Universitéde Lille EA 7369-URePSSS-Unitéde Recherche Pluridisciplinaires Sport SantéSociété59000 LilleFrance Research Institute for Sport and Exercise Sciences Liverpool John Moores University LiverpoolUK

The aims of this study were(1)to define speed and acceleration thresholds from youth match activity of soccer players and(2)to analyze the activity performed by young soccer players during a match using GPS devices and according to these *** U11 soccer players from a professional club participated in a 7-sided match being equipped with global positioning system(GPS)devices(sampling frequency 5 Hz)to measure the speed of each *** Kernel Density Esti-mate(KDE)was used to observe the occurrences of *** range of velocities was described by a distribution curve,from which the speed and acceleration thresholds for each category of movement were defined and time–motion analysis of the match was *** model with 4 Gaussian laws was the best when using the Akaike Information criterion(AIc).In this study,the thresholds defined for each category of movement were:standing(cceleration thresholds were calculated to define movement considered as a sprint for each category of movement:standing(0.3 m/s^(2)),walking(0.66 m/s^(2)),slow running(1.01 m/s^(2))or fast running(0.97 m/s^(2)).All the acceleration thresholds were significantly different from each other(Pct sizes,excepting the comparison between slow and fast running(P=0.41)with a small effect *** U-11 soccer players,time–motion analysis may be performed according to five categories of *** study has also defined sprint and acceleration thresholds for this category of age.

关键词： Football Sprint Accelerations Movement Youth

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Highly sensitive microfiber ultrasound sensor for photoacoustic imaging

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Opto-Electronic Advances 2023年第6期6卷 4-6页

作者： Perry Ping Shum Gerd Keiser georges Humbert Dora Juan Juan Hu APing Zhang Lei Su Department of Electronic and Electrical Engineering Southern University of Science and Technology1088 Xueyuan AvenueShenzhen 518055China Department of Electrical and computer Engineering Boston University8 Saint Mary's StreetBoston 02215America XLIM Research Institute-UMR 7252 cNRS University of Limoges123avenue Albert ThomasLimoges 87060France Institute for Infocomm Research Agency for ScienceTechnology and Research1 Fusionopolis Way#21-01Connexis South Tower Singapore 138632Singapore The Hong Kong Polytechnic University Kowloon TongHong Kong 999077China School of Engineering and Materials Science Queen Mary University of LondonMile End RoadLondon E14NSUK

An ultrasound wave is a kind of acoustic signal with a frequency greater than 20 kHz,which is widely used in diverse fields such as medical imaging diagnosis,nondestructive testing and resource exploration.A variety of ultrasound sensors have been developed for ultrasound *** for photoacoustic imaging,specialized ultrasound sensors with high sensitivity,small size,and broad bandwidth are ***,achieving such sensor perform-ance still poses a great challenge to the current state-of-the-art in ultrasound sensor technology.A recent work pub-lished in Opto-Electronic Advances(DOI:10.29026/oea.2022.200076)proposes a microfiber-based ultrasound sensor that breaks the limitations of existing ultrasound *** from the large evanescent field characteristic of mi-crofiber,combined with the coherent detection technology,the proposed sensor realized highly sensitive ultrasound de-tection and demonstrated excellent performance in high-resolution photoacoustic *** highly sensitive and mini-aturized microfiber ultrasound sensor provides a competitive alternative for various applications,such as endoscopic photoacoustic imaging of the intestinal tract and blood vessels in animals.

关键词： Highly sensor competitive

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Holography in the invisible. From the thermal infrared to the terahertz waves: outstanding applications and fundamental limits

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Light(Advanced Manufacturing) 2022年第2期3卷 157-170页

作者： Marc georges Yuchen Zhao Jean-François Vandenrijt centre Spatial de Liège STAR Research InstituteLiège UniversitéLiege Science Park4031 Angleur(Liège)Belgium

Since its invention,holography has been mostly applied at visible wavelengths in a variety of ***,non-destructive testing of manufactured objects was a driver for developing holographic methods and all related ones based on the speckle pattern *** substantial limitation of holographic non-destructive testing is the setup stability requirements directly related to the laser *** observation has driven some works for 15 years:developing holography at wavelengths much longer than visible *** this paper,we will first review researches carried out in the infrared,mostly digital holography at thermal infrared wavelengths around 10 *** will discuss the advantages of using such wavelengths and show different examples of *** nondestructive testing,large wavelengths allow using digital holography in perturbed environments on large objects and measure large deformations,typical of the aerospace *** astonishing applications such as reconstructing scenes through smoke and flames were *** moving further in the spectrum,digital holography with so-called Terahertz waves(up to 3 millimeters wavelength)has also been *** main advantage here is that these waves easily penetrate some ***,one can envisage Terahertz digital holography to reconstruct the amplitude and phase of visually opaque *** review some cases in which Terahertz digital holography has shown potential in biomedical and industrial *** will also address some fundamental bottlenecks that prevent fully benefiting from the advantages of digital holography when increasing the wavelength.

关键词： Long wave infrared Terahertz waves Digital holography Speckle interferometry

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Lanthanide-doped nanoscintillators

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Light(Science & Applications) 2022年第10期11卷 2264-2266页

作者： Jean-claude georges Bünzli institute of chemical Sciences and Engineering Swiss Federal Institute of TechnologyLausanne(EPFL)LausanneSwitzerland Department of Biomedical Engineering Southern University of Science and Technology(SUSTech)ShenzhenChina

Lanthanide-doped nanoscintillators are taking the lead in several important fields including radiation detection,biomedicine,both at the level of diagnosis and therapy,and information encoding.

关键词： diagnosis Lanthanide ill

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Homogenization of Periodically Heterogeneous Thin Beams

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chinese Annals of Mathematics,Series B 2018年第3期39卷 397-426页

作者： georges GRISO Bernadette MIARA Laboratoire J.-L.Lions-cNRS Bote courrier 187Universite Pierre et Marie Curie4 Place Jussieu75005 ParisFrance Universite Paris-Est 5 boulevard DescartesChamps-sur-Marne77454 Marne-la-Vallee Cedex2France

consider an elastic thin three-dimensional body made of a periodic distribution of elastic inclusions. When both the thickness of the beam and the size of the heterogeneities tend simultaneously to zero the authors obtain three different one-dimensional models of beam depending upon the limit of the ratio of these two small parameters.

关键词：周期性横梁异构小参数弹性

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Is non-host pollen suitable for generalist bumblebees？

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Insect Science 2018年第2期25卷 259-272页

作者： Maryse Vanderplanck1, Sylvain Decleves1, Nathalie Roger, corentin Decroo2, Guillaume caulier3 Gaetan Glauser4, Pascal Gerbaux2, georges lognay5, Aurore Richel6, Nathalie Escaravage7 and Denis Michez1 Laboratory of Zoology Research Institute for Biosciences University of Mons—UMONS Mons Belgium Organic Synthesis and Mass Spectrometry Laboratory Interdisciplinary Center for Mass Spectrometry University of Mons—UMONS Mons Belgium Research Institute for Biosciences Biology of Marine Organisms and Biomimetics University of Mons—UMONS Mons Belgium Neuchâtel Platform of Analytical chemistry University of Neuchâtel Neuchâtel Switzerland Laboratory of Analytical chemistry University of Liège Gembloux Agro‐Bio Tech Gembloux Unit of Biological and Industrial chemistry (cBI) University of Liège Gembloux Agro‐Bio Tech Gembloux Belgium Laboratoire Evolution et Diversité Biologique (EDB) CNRS ENFA UMR 5174 Université Toulouse 3 Paul Sabatier Toulouse France

current evidence suggests that pollen is both chemically and structurally protected. Despite increasing interest in studying bee-flower networks, the constraints for bee development related to pollen nutritional content, toxicity and digestibility as well as their role in the shaping of bee-flower interactions have been poorly studied. In this study we combined bioassays of the generalist bee Bombus terrestris on pollen of cirsium, Trifolium, Salix, and cistus genera with an assessment of nutritional content, toxicity, and digestibility of pollen. Microcolonies showed significant differences in their development, non-host pollen of cirsium being the most unfavorable. This pollen was characterized by the presence of quite rare 37-sterols and a low digestibility. cirsium consumption seemed increase syrup collection, which is probably related to a detoxification mixing behavior. These results strongly suggest that pollen traits may act as drivers of plant selection by bees and partly explain why Asteraceae pollen is rare in bee generalist diet.

关键词： bee-flower interactions generalist bees pollen defences

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Asymptotic Behavior of a Structure Made by a Plate and a Straight Rod

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chinese Annals of Mathematics,Series B 2013年第3期34卷 399-434页

作者： Dominique BLANcHARD georges GRISO Universit de Rouen France Laboratoire J.-L. Lions-cNRS Boite courrier 187 Universit Pierre et Marie Curie 4 Place Jussieu 75005 Paris France

This paper is devoted to describing the asymptotic behavior of a structure made by a thin plate and a thin perpendicular rod in the framework of nonlinear elasticity. The authors scale the applied forces in such a way that the level of the total elastic energy leads to the Von-Krmn's equations (or the linear model for smaller forces) in the plate and to a one-dimensional rod-model at the limit. The junction conditions include in particular the continuity of the bending in the plate and the stretching in the rod at the junction.

关键词：弹性薄板渐近行为直杆结构线性模型非线性连续性交界处

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