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Female indris determine the rhythmic structure of the song and sustain a higher cost when the chorus size increases

Current Zoology 2019年第1期65卷 89-97页

作者： Chiara de Gregorio Anna Zanoli Daria Valente Valeria Torti Giovanna Bonadonna Rose Marie Randrianarison Cristina Giacoma Marco Gamba Dipartimento di Scienze della Vita e Biologia dei Sistemi Universita di Torino via Accademia Albertina Torino Italia Dipartimento di Scienze Chimiche della Vita e della Sostenibilita Ambientale Universita di Parma Parma Italia Group d'Ttude et de recherche sur les Primates de Madagascar (GERP) Antananarivo Madagascar departement de Anthropobiologie et developpement Durable Universite d'Antananarivo Faculte des Sciences Antananarivo Madagascar

Among the behavioral traits shared by some nonhuman primate species and humans there is singing. Unfortunately, our understanding of animals' rhythmic abilities is still in its infancy. indris are the only lemurs who sing and live in monogamous pairs, usually forming a group with their offspri ng. All adult members of a group usually participate in choruses that are emitted regularly and play a role in advertising territorial occupa ncy and in tergroup spaci ng. Males and females emit phrases that have similar frequency ranges but may differ in their temporal structure. We examined whether the individuals' contribution to the song may change according to chorus size, the total duration of the song or the duration of the individual con tribution using the in ter-on set intervals within a phrase and between phrases. We found that the rhythmic structure of indri's songs depends on factors that are different for males and females. We showed that females have sigrdficantly higher variation in the rhythm of their contribution to the song and that, changes according to chorus size. Our findings indicate that female indris sustain a higher cost of singing than males whe n the nu mber of singers in creases. These results suggest that cross-species investigatio ns will be crucial to un derstanding the evoluti on ary frame in which such sexually dimorphic traits occurred.

关键词： chorus coordination duets lemurs singing synchrony

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Xinjiangoxylon ***.,a New Gymnosperm from the Latest Permian of China

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Acta Geologica Sinica(English Edition) 2014年第5期88卷 1356-1363页

作者： SHi Xiao YU Jianxin Li Hui CHi Hongfei ZHANG Wu State Key Laboratary of Biogeology and Environmental Geology Faculty of Earth Sciences China University of Geosciences Centre de recherche sur la Paleobiodiversite et les Paleoenvironnements Universite Pierre et Marie CurieParis 75252France Shenyang institute of Geology and Mineral Resources Ministry of National Land and Resources

Following the greatest known end-Permian mass extinction plants have low diversity. Lycopsids and conifers dominated on land. A new gymnosperm Xinjiangoxylon gen. nov. is proposed based on a woody stem specimen collected from the Upper Permian （latest, Changhsingian） Upper Guodikeng Formation of the Taoshuyuan section, Turpan, Xinjiang Uygur Autonomous Region, Northwest China. The decorticated stem is characterized by a complex pith, endarch primary xylem and a thick secondary xylem cylinder. Numerous petrified woods were found in the Changhsingian at this section. However, there are rare wood fossils in the Early Triassic. The abrupt decrease of fossil woods worldwide relates to the crisis at the end of the Permian. Xinjiangoxylon turpanense gen et. sp. nov. appears to represents one gymnosperm that existed in the latest Permian.

关键词： Paleobotany taxonomy Gymnospermae mass extinction Late Permian Xinjiang AR

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La hausse des taux,une épée à double tranchant pour l'UE

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今日中国（法文版） 2022年第9期60卷 56-57页

作者： ZHAO YONGSHENG Académie desétudes sur l'économie ouverte de Chine Académie d'innovation et de gouvernance globales Centre de recherche sur l'économie française de l'Universitéd'économie et de commerce international(UiBE)

Le 21 juillet 2022,la Banque centrale européenne(BCE)a annoncé une hausse suiprenante des taux d'intérêt de l’euro,précisément 50 points de base pour les taux de refinancement,et 50 points de base pour l’épargne et le crédit *** taux directeur des opérations principales de refinancement est désormais de o,5%et celui de l’épargne et du crédit,de o,75%.

关键词： des pour finance

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Hinokiflavone and Related C-O-C-Type Biflavonoids as Anti-cancer Compounds:Properties and Mechanism of Action

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Natural Products and Bioprospecting 2021年第4期11卷 365-377页

作者： Jean-François Goossens Laurence Goossens Christian Bailly Univ.Lille CHU LilleEA 7365-GRITA-Groupe de Recherche sur les Formes Injectables et les Technologies Associées59000 LilleFrance OncoWitan 59290 Lille(Wasquehal)France

Biflavonoids are divided in two classes:C-C type compounds represented by the dimeric compound amentoflavone and C-O-C-type compounds typified by hinokiflavone(HNK)with an ether linkage between the two connected apigenin *** later sub-group of bisflavonyl ethers includes HNK,ochnaflavone,delicaflavone and a few other dimeric compounds,found in a variety of plants,notably Selaginella species.A comprehensive review of the anticancer properties and mechanism of action of HNK is provided,to highlight the anti-proliferative and anti-metastatic activities of HNK and derivatives,and HNK-containing plant *** anticancer effects rely on the capacity of HNK to interfere with the ERK1-2/p38/NFκB signaling pathway and the regulation of the expression of the matrix metalloproteinases MMP-2 and MMP-9(with a potential direct binding to MMP-9).in addition,HNK was found to function as a potent modulator of pre-mRNA splicing,inhibit-ing the SUMO-specific protease *** such,HNK represents a rare SENP1 inhibitor of natural origin and a scaffold to design synthetic *** formulations of HNK have been elaborated to enhance its solubility,to facilitate the compound delivery and to enhance its anticancer *** review shed light on the anticancer potential of C-O-C-type biflavonoids and specifically on the pharmacological profile of *** compound deserves further attention as a regu-lator of pre-mRNA splicing,useful to treat cancers(in particular hepatocellular carcinoma)and other human pathologies.

关键词： Hinokiflavone Biflavonoid Cancer therapy Mechanism of action Natural product

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Modulation of peroxisomes abundance by argan oil and lipopolysaccharides in acyl-CoA oxidase 1-deficient fibroblasts

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Health 2013年第1期5卷 62-69页

作者： Riad El Kebbaj Soufiane El Kamouni Hammam i.El Hajj Pierre Andreoletti Joseph Gresti Norbert Latruffe M’Hammed Said El Kebbaj Joseph Vamecq Gerard Lizard Boubker Nasser Mustapha Cherkaoui-Malki Universitede Bourgogne Laboratoire BioPeroxIL EA7270DijonFrance Laboratoir de Biochimie et Neurosciences Facultedes Sciences et TechniquesUniversite Hassan ISettatMorocco Universitede Bourgogne Centre de Recherche INSERMDijonFrance Laboratoire de recherche sur les lipoproteines et l’atherosclerose Facultedes Sciences Ben M’sikUniversite Hassan II-MohammediaCasablancaMorocco iNSERM and HMNO CBPCHRU LilleLilleFrance

Pseudo-neonatal adrenoleukodystrophy (P-NALD) is a neurodegenerative disorder caused by acyl-CoA oxidase 1 (ACOX1) deficiency with subsequent impairment of peroxisomal fatty acid β-oxidation, accumulation of very long chain fatty acids (VLCFAs) and strong reduction in peroxisome abundance. increase in peroxisome number has been previously suggested to improve peroxisomal disorders, and in this perspective, the present work was aimed at exploring whether modulation of peroxisomes abundance could be achieved in P-NALD fibroblasts. Here we showed that treatment with the natural Argan oil induced peroxisome proliferation in P-NALD fibroblasts. This induction was independent on activations of both nuclear receptor PPARα and its coactivator PGC-1α. Lipopolysaccharides (LPS) treatment, which caused inflammation, induced also a peroxisome proliferation that, in contrast, was dependent on activations of PPARα and PGC-1α. By its ability to induce peroxisome proliferation, Argan oil is suggested to be of potential therapeutic use in patients with P-NALD.

关键词： Acyl-CoA Oxidase 1 Argan Oil LPS PGC-1a Peroxisome Proliferation P-NALD PPARa

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Naturally Nitrogen-Doped Biochar Made from End-of-Life Wood Panels for SO_(2) Gas depollution

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Journal of Renewable Materials 2023年第11期11卷 3807-3829页

作者： Hamdi Hachicha Mamadou Dia Hassine Bouafif Ahmed Koubaa Mohamed Khlif Flavia Lega Braghiroli Research Forest institute(institut de recherche sur les Forets IRF)University of Quebec in Abitibi-Temiscamingue(UQAT)Rouyn-NorandaQC J9X 5E4Canada Technology Center for industrial Waste(Centre Technologique des Residus industriels CTRI)College of Abitibi-Temiscamingue(Cégep de L’Abitibi-Témiscamingue)Rouyn-NorandaQC J9X 5E5Canada Ecole D’ingenieur de Sfax Universite de SfaxSfax3038Tunisia

Reconstituted wood panels have several advantages in terms of ease of manufacturing,but their shorter life span results in a huge amount of reconstituted wood panels being discarded in sorting centers ***,the most common approach for dealing with this waste is *** this study,reconstituted wood panels were converted into activated biochar through a two-step thermochemical process:(i)biochar production using pilot scale fast pyrolysis at 250 kg/h and 450℃;and(ii)a physical activation at three temperatures(750℃,850℃ and 950℃)using an in-house activation furnace(1 kg/h).Results showed that the first stage removed about 66% of the nitrogen from the wood panels in the form of NO,NH3,and trimethylamine,which were detected in small amounts compared to emitted CO_(2).Compared to other types of thermochemical conversion methods(e.g.,slow pyrolysis),isocyanic acid and hydrogen cyanide were not detected in this *** second stage produced activated biochar with a specific surface area of up to 865 m^(2)/g at 950℃.The volatile gases generated during activation were predominantly composed of toluene and *** two-step process resulted in nitrogen-rich carbon in the form of pyrrolic and pyridinic *** biochars were then evaluated for their SO_(2) retention performance and showed an excellent adsorption capacity of up to 2140 mg/g compared to 65 mg/g for a commercial activated carbon(889 m^(2)/g).End-of-life reconstituted wood panels and SO_(2) gas are problematic issues in Canada where the economy largely revolves around forestry and mining industries.

关键词： End-of-life wood panels pyrolysis activation biochar and activated biochar N-doped carbons SO_(2)removal

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Loaded Rubber-Like Materials Subjected to Small-Amplitude Vibrations

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Chinese Journal of Polymer Science 2014年第5期32卷 620-632页

作者： T.Beda J.B.Casimir K.E.Atcholi Y.Chevalier industrial and Mechanical Engineering department Ecole Nationale Supérieure Polytechnique (ENSP) Département de Physique Faculté des Sciences Université de NGaoundéré Laboratoire d’ingénierie des Structures Mécanique et des Matériaux (LiSMMA) SUPMECA de Paris institut de recherche sur les Transports l’Energie et la Société (IRTES EA7274) Laboratoire Systèmes et Transport (SeT EA 3317) Université de Technologie de Belfort-Montbéliard (UTBM)

This paper proposes a constitutive law and a method for characterizing highly preloaded viscoelastic materials subjected to linear （small-amplitude） vibrations. A multiplicative non-separable variables law has been suggested to model the behavior that depends on both stretch and time/frequency. This approach allows splitting the intricate combined test performed simultaneously on both stretch and frequency, generally in a limited experimental domain up to 100 Hz, into two independent tests. Thus, on one hand, the dynamic complex modulus dependent on frequency alone is evaluated on the basis of vibration tests in a large experimental domain up to 100 kHz. On the other hand, energetic parameters are determined from a quasi-static hyperelastic tensile test. The complex modulus, dependent on both stretch and frequency, is then deduced from the results acquired from uncoupled investigations. This work shows that, in extension, the elastic modulus increases with increasing stretch, and the loss factor decreases with increasing stretch; while, in compression, around the material undeformed state, the modulus increases as the stretch increases till a certain value of compression stretch （upturn point depending on material characteristics）, and then the modulus decreases as the stretch increases. Globally, preload rigidifies materials but reduces their damping property. These results closely match a well-known observation in solid mechanics.

关键词： Elastomers Viscoelasticity Hyperelasticity Vibrations Modeling Characterization Combined modulus.

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Nanoscale resetting of the Th/Pb system in an isotopically-closed monazite grain: A combined atom probe and transmission electron microscopy study

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Geoscience Frontiers 2019年第1期10卷 65-76页

作者： A.-M.Seydoux-Guillaume D.Fougerouse A.T.Laurent E.Gardés S.M.Reddy D.W.Saxey Univ Lyon UJM-Saint-Etienne CNRS IRD CNRS Université Clermont Auvergne School of Earth and Planetary Sciences Curtin University Geoscience Atom Probe Advanced Resource Characterisation Facility John de Laeter Centre Curtin University Centre de recherche sur les ions les Matériaux et la Photonique (CIMAP) department of Physics and Astronomy Curtin University

Understanding the mechanisms of parent-daughter isotopic mobility at the nanoscale is key to rigorous interpretation of Ue The Pb data and associated dating. Until now, all nanoscale geochronological studies on geological samples have relied on either Transmission Electron Microscope(TEM) or Atom Probe Microscopy(APM) characterizations alone, thus suffering from the respective weaknesses of each technique. Here we focus on monazite crystals from a ~1 Ga, ultrahigh temperature granulite from Rogaland(Norway). This sample has recorded concordant UeP b dates(measured by LA-iCP-MS) that range over 100 My, with the three domains yielding distinct isotopic Ue Pb ages of 1034 ± 6 Ma(D1; Srich core), 1005 ± 7 Ma(D2), and 935 ± 7 Ma(D3), respectively. Combined APM and TEM characterization of these monazite crystals reveal phase separation that led to the isolation of two different radiogenic Pb(Pb*) reservoirs at the nanoscale. The S-rich core of these monazite crystals contains Cae Srich clusters, 5 -10 nm in size, homogenously distributed within the monazite matrix with a mean interparticle distance of 40 -60 nm. The clusters acted as a sink for radiogenic Pb(Pb*) produced in the monazite matrix, which was reset at the nanoscale via Pb diffusion while the grain remained closed at the micro-scale. Compared to the concordant ages given by conventional micro-scale dating of the grain,the apparent nano-scale age of the monazite matrix in between clusters is about 100 Myr younger, which compares remarkably well to the duration of the metamorphic event. This study highlights the capabilities of combined APM-TEM nano-structural and nano-isotopic characterizations in dating and timing of geological events, allowing the detection of processes untraceable with conventional dating methods.

关键词： Monazite Nanoscale resetting Nano-clusters APM TEM UHT metamorphism

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deep-water Ostracod Extinction in the Latest Permian:Evidence from Guangxi Province,South China

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地学前缘 2009年第S1期16卷 248-249页

作者： Sylvie Crasquin CNRS UMR 7207:Centre de recherches sur la Paléobiodiversité et les PalaéoenvironnementsUniversité Pierre et Marie Curie

Previous studies on the Late Permian shallow-water ostracod faunas in South China have greatly increased our knowledge on the Late Permian *** the absence of data on contemporary deep-water ostracods makes it difficult to comprehensively understand the Late Permian ostracods during the largest extinction among the"Big Five"in the Phanerozoic. During the past years,our work has been focused

关键词： ostracoda extinction Late Permian deep-water South China

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Structural and Electronic Properties of New Materials Based on Thiophene and Phenylene

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物理化学学报 2008年第1期24卷 37-40页

作者： ZGOU Hsaine HAMiDi Mohamed LERE-PORTE Jean-Pierre SEREiN-SPiRAU Francoise BOUACHRiNE Mohammed Unité de recherche sur les Macromolécules et Modélisation Faculté des Sciences et Techniques B. P. 509 Boutalamine 52000Errachidia Maroc Unité de Chimie Théorique Appliquée Faculté des Sciences et Techniques B. P. 509 Boutalamine 52000Errachidia Maroc Hétérochimie Moléculaire et Macromoléculaire UMR CNRS 5076 Ecole Nationale Supérieure de Chimie de Montpellier 8 Rue de l＇EcoleNormale 34296 Montpellier Cedex 05 France

Theoretical study on the geometries and electronic properties of new conjugated compounds based on thiophene and phenylene was carried out. The theoretical ground-state geometries and electronic structures of the studied molecules were obtained using the density functional theory (DFT) method at B3LYP level with 6-31G(d) basis set. The electronic properties were determined by ZiNDO/s, CiS/3-21G(d), and TD//B3LYP/3-21G(d) calculations performed on the B3LYP/6-31(d) optimized geometries. The effects of the ring structure and the substituents on the geometries and electronic properties of these materials were discussed. The results of this study indicate how the electronic properties can be tuned by the backbone ring or side group and suggest these compounds as good candidates for opto-electronic applications.

关键词：噻吩亚苯基新材料电学特性结构共轭聚合物密度泛函理论

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