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Holocene vegetation change in relation to fire and volcanic events in Jilin, Northeastern China

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Science China Earth Sciences 2015年第8期58卷 1404-1419页

作者： ZHAO HongLi LI XiaoQiang valerie A.HALL State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences School of Geography Archaeology and Palaeoecology Queen's University Belfast

Volatiles erupted from large-scale explosive volcanic activities have a significant impact on climate and environmental *** an important ecological factor,the occurrence of fire is affected by vegetation cover,and fire can feed back into both vegetation and climatic *** causes of fire events are diverse;and can include volcanic *** amount of charcoal in sediment sequences is related to the frequency and intensity of fire,and hence under good preservation conditions fire history can be reconstructed from fossil charcoal *** now,little research on the role of fire has been carried out in northeastern *** this study,through research on charcoal and tephra shards from Gushantun and Hanlongwan,Holocene vegetation change in relation to fire and volcanic events in Jilin,Northeastern China,was *** tephra shards are present in Gushantun it is associated with low level of both conifers and broadleaved trees,and is also associated with a pronounced charcoal *** suggests forest cover was greatly reduced from a fire caused by an eruption of the Tianchi *** also detected one tephra layer in Hanlongwan,which also has the almost same depth with low level forest pollen values and one charcoal *** was caused probably by an eruption of the Jinlongdingzi volcano.

关键词： Holocene vegetation change fire history tephra shards volcanic events Northeastern China

BEST PRACTICES FOR AN INTERNAL WHISTLEBLOWING PLATFORM （WP）

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Frontiers of Law in China-Selected Publications from Chinese Universities 2015年第3期10卷 475-487页

作者： valerie Junod Ph.D in law and Professor at School of Law University of Geneva Switzerland Professor at Faculty of Business and Economics University of Lausanne Switzerland.

Whistleblowing is one tool, among many others, to prevent, deter and detect violations of the law or of the firm＇s own ethical norms. This article presents proposals to set up an effective internal whistleblowing platform within a firm. These proposals outline the procedures that shouM be followed to handle whistleblowing reports. In addition, the article explains how an internal department or an externalized service should be set up to process these reports. The purpose of these proposals is to reach a satisfactory compromise between the interests of the firm in having its own values upheld, the interests of the State in securing compliance with the laws, the interests of the employees in working in an honest and safe environment, the interests of other stakeholders to be treated fairly and finally, the interests of denounced parties not to be wrongly accused.

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Walking the thin line…ten years later:the dilemma of aboveversus below-ground features to support phylogenies in the Russulaceae(Basidiomycota)

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Fungal Diversity 2018年第2期89卷 267-292页

作者： Bart Buyck Stefan Zoller valerie Hofstetter Museum national d’histoire naturelle Departement Systematique et OriginesCP 39Institut pour la SystematiqueEvolutionBiodiversiteSorbonne UniversiteUMR 7205 CNRS MNHN UPMC EPHE12 Rue Buffon75005 ParisFrance Department of Environmental Systems Science Genetic Diversity CentreETH ZurichCHN E 55Universitatstrasse 168092 ZurichSwitzerland Department of Plant Protection Agroscope ChanginsWadenswil Research StationACWRte de Duiller1260 NyonSwitzerland

For the very first time,morpho-anatomical features of both fruiting bodies as well as below-ground structures have been confronted with a newly produced multigene phylogeny of root symbiotic basidiomycetes using one of the most speciose genera of ectomycorrhizal fungi(Russula,Russulales)as an *** this first of two papers,the authors focus more specifically on below-ground *** five-gene phylogeny divides the genus in five main clades,here interpreted as representing seven subgenera,all significantly *** more conserved than features of fruiting bodies,the anatomy of ectomycorrhiza does not allow for an unambiguous characterization of the main clades resolved by phylogenetic analysis,but the anatomy of ectomycorrhiza performs better to naturally classify the species of this *** of fruiting bodies remain much more adequate for the delimitation of terminal clades and are irreplaceable for morphological species *** taxa mostly nest in ancient lineages,but are also present in some terminal clades of otherwise temperate species *** shift from plectenchymatic to pseudoparenchymatic ECM outer mantle structures happened most likely already in the paleotropics,and is here hypothesized to have facilitated a major diversification of the genus with new hosts in the northern *** data as well as our own observations on below ground structures of several Lactifluus species suggests that this genus shares with Russula the absence of lactifers in ECM mantles and rhizomorphs,contrary to species of Lactarius where lactifers are always *** observations on rhizomorphs of species in Multifurca confirm the presence of vessel-like and ladder-like hyphae,also found in the other agarioid genera of this family,while distinct lactifers are only present in the lactarioid,but not in russuloid members of this genus.

关键词： Ectomycorrhizal anatomy Lactifluus Multifurca Multigene phylogeny Rhizomorphs

Spatio-temporal Fragmentation of Leisure Activities in Information Era： Empirical Evidence from Nanjing, China

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Chinese Geographical Science 2017年第1期27卷 137-150页

作者： XI Guangliang ZHEN Feng Puel GILLES Fernandez valerie School of Geographic and Oceanographic Science Nanjing University Nanjing 210093 China School of Architecture and Urban Planning Nanjing University Nanjing 210093 China Department of Economics and Management University of Toulouse Toulouse 31000 France Department of Economics and Social Sciences Telecom Paris-Tech Paris 75013 France

Activity fragmentation provides a new approach for understanding the transformation of urban space and function in the information era. Numerous theoretical and empirical studies have been conducted on activity fragmentation, but few studies have focused on the fragmentation of leisure activities. This study was intended to extend the extant literature by: 1) analysing the spatio-temporal fragmentation of physical and virtual leisure activities by using a dataset collected in Nanjing, China, and 2) evaluating the reasons of leisure activity fragmentation, as well as the potential spatial effect of activity fragmentation. The results indicated that virtual leisure activities are more fragmented than physical leisure activities, but the fragmentation of physical and virtual leisure activities varies on weekday and weekend, as well as in various locations and urban districts. In addition, the results suggested that sociodemographic factors and information and communication technology(ICT) variables distinctly affect the fragmentation of leisure activities. Meanwhile, the fragmentation of virtual leisure activities may enhance the transformation of traditional urban space by reallocating leisure activity times and locations.

关键词： activity fragmentation information and communication technology(ICT) influencing mechanism China

Detection of CO2 and O2 by iron loaded LTL zeolite films

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Frontiers of Chemical Science and Engineering 2018年第1期12卷 94-102页

作者： Veselina Georgieva Richard Retoux valerie Ruaux Valentin Valtchev Svetlana Mintova Laboratoire Catalyse et Spectrochimie (LCS) ENSICAEN CNRS Normandy University 14000 Caen France Laboratoire de Cristallographie et Sciences des Matériaux (CRISMAT) ENSICAEN CNRS Normandy University 14000 Caen France

Detection of oxygen and carbon dioxide is important in the field of chemical and biosensors for atmosphere and biosystem monitoring and fermentation processes. The present study reports on the preparation of zeolite films doped with iron nanoparticles for detection of CO2 and O2 in gas phase. Pure nanosized LTL type zeolite with monomodal particle size distribution loaded with iron （Fe-LTL） was prepared under hydrothermal condition from colloidal precursor suspensions. The zeolite was loaded with iron to different levels by ion exchange. The Fe-LTL suspensions were used for preparation of thin films on silicon wafers via spin coating method. The reduction of the iron in the zeolite films was carried out under H2 flow （50% H2 in Ar） at 300 ℃. The presence of iron nanoparticles is proved by in situ ultra-violet-visible spectroscopy. The properties of the films including surface roughness, thickness, porosity, and mechanical stability were studied. In addition, the loading and distribution of iron in the zeolite films were investigated. The Fe-LTL zeolite films were used to detect O2 and CO2 in a concentration dependent mode, followed by IR spectroscopy. The changes in the IR bands at 855 and 642 cm^-1 （Fe O-H and Fe-O bending vibrations） and at 2363 and 2333 cm^-1 （CO2 asymmetric stretching） corresponding to the presence of O2 and CO2, respectively, were evaluated. The response to O2 and CO2 was instant, which was attributed to great accessibility of the iron in the nanosized zeolite crystals. The saturation of the Fe-LTL films with CO2 and O2 at each concentration was reached within less than a minute. The Fe-LTL films detected both oxygen and carbon dioxide in contrast, to the pure LTL zeolite film.

关键词： zeolite films detection of CO2 and O2 adsorption

Digital resources for nursing education:Open courseware and massive open online courses

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International Journal of Nursing Sciences 2016年第3期3卷 307-313页

作者： valerie Swigart Zhan Liang University of Pittsburgh School of Nursing 440 Victoria Building3500 Victoria StreetPittsburghPA 15261USA University of South Florida College of Nursing12901 Bruce B Downs BlvdTampaFL 33612USA

Open Courseware(OCW)and massive open online courses(MOOCs)are teaching and learning resources that are easily accessible to anyone with an Internet *** is digitally published learning content including full and partial courses(syllabi,outlines,lectures in pdf or video,slides,reference lists,etc.),simulations,animations,tutorials,drills and practices,modules,podcasts,case studies,and *** content is free and can be adopted or adapted to the user's *** are online learning experiences taught by university professors using conventional educational tools including video lectures,interactive modules,assignments,study materials,discussion boards,quizzes and *** are offered free or at low cost for personal and professional learning,and as a supplement to classroom *** MOOCs and OCW focus on topics of interest to nursing,particularly to nurse *** article provides the reader with a brief history of the development of OCW and MOOCs,conceptual descriptions,and guidance about how to access and use these new online resources.

关键词： Open educational resources Open courseware OCW Massive open online course MOOC Nursing education

Vonoprazan-amoxicillin dual regimen with Saccharomyces boulardii as a rescue therapy for Helicobacter pylori:Current perspectives and implications

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World Journal of Gastroenterology 2024年第10期30卷 1280-1286页

作者： valerie Josephine Dirjayanto Jessica Audrey Daniel Martin Simadibrata Faculty of Medicine Universitas IndonesiaJakarta Pusat 10430DKI JakartaIndonesia Division of Gastroenterology and Hepatology Mayo ClinicRochesterMinnesota 55905United States Nuffield Department of Population Health University of OxfordOxford OX37LFUnited Kingdom

Yu et al’s study in the World Journal of Gastroenterology(2023)introduced a novel regimen of Vonoprazan-amoxicillin dual therapy combined with Saccharomyces boulardii(***)for the rescue therapy against Helicobacter pylori(***),a pathogen responsible for peptic ulcers and gastric *** is a potassium-competitive acid blocker renowned for its rapid and long-lasting acid suppression,which is minimally affected by *** to proton pump inhibitors,which bind irreversibly to cysteine residues in the H+/K+-ATPase pump,Vonoprazan competes with the K+ions,prevents the ions from binding to the pump and blocks acid *** with increasing antibiotic resistance,effects on the gut microbiota,patient compliance,and side effects have led to the advent of a dual regimen for *** studies suggested that *** plays a role in stabilizing the gut barrier which improves *** eradication *** an acceptable safety profile,the dual-adjunct regimen was effective regardless of prior treatment failure and antibiotic resistance profile,thereby strengthening the applicability in clinical ***,*** comes in various formulations and dosages,warranting further exploration into the optimal dosage for supplementation in rescue ***,larger,randomized,double-blinded controlled trials are warranted to confirm these promising results.

关键词： Vonoprazan Saccharomyces boulardii Helicobacter pylori Rescue therapy Eradication rate

Model-based estimation of above-ground biomass in the miombo ecoregion of Zambia

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Forest Ecosystems 2016年第4期3卷 258-274页

作者： James Halperin valerie LeMay Emmanuel Chidumayo Louis Verchot Peter Marshall Department of Forest Resources Management The University of British Columbia 2424 Main Mall Vancouver BC V6T 1Z4 Canada Makeni Savanna Research Project P.O. Box 50323 Ridgeway Lusaka Zambia International Center for Tropical Agriculture Km 17 Recta Cali-Palmira Apartado Aereo 6713 Cali 763537. Colombia

Background：Information on above-ground biomass（AGB） is important for managing forest resource use at local levels,land management planning at regional levels,and carbon emissions reporting at national and international *** many tropical developing countries,this information may be unreliable or at a scale too coarse for use at local *** is a vital need to provide estimates of AGB with quantifiable uncertainty that can facilitate land use management and policy development ***-based methods provide an efficient framework to estimate ***：Using National Forest Inventory（NFI） data for a^1,000,000 ha study area in the miombo ecoregion,Zambia,we estimated AGB using predicted canopy cover,environmental data,disturbance data,and Landsat 8 OLI satellite *** assessed different combinations of these datasets using three models,a semiparametric generalized additive model（GAM） and two nonlinear models（sigmoidal and exponential）,employing a genetic algorithm for variable selection that minimized root mean square prediction error（RMSPE）,calculated through *** compared model fit statistics to a null model as a baseline estimation *** bootstrap resampling methods,we calculated 95% confidence intervals for each model and compared results to a simple estimate of mean AGB from the NFI ground plot ***：Canopy cover,soil moisture,and vegetation indices were consistently selected as predictor *** sigmoidal model and the GAM performed similarly;for both models the RMSPE was -36.8 tonnes per hectare（i.e.,57% of the mean）.However,the sigmoidal model was approximately 30% more efficient than the GAM,assessed using bootstrapped variance estimates relative to a null *** selecting the sigmoidal model,we estimated total AGB for the study area at 64,526,209 tonnes（＋/- 477,730）,with a confidence interval 20 times more precise than a simple designbased ***：Our findings demonstrate that NFI

关键词： National Forest Inventory Above-ground biomass Miombo REDD+ Generalized additive model Nonlinear model Landsat 8 OLI

A longitudinal network analysis of social dynamics in rooks corvus frugilegus： repeated group modifications do not affect social network in captive rooks

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Current Zoology 2017年第5期63卷 379-388页

作者： Palmyre H. BOUCHERIE Sebastian SOSA Cristian PASQUARETTA valerie DUFOUR Institut Pluridisciplinaire Hubert Curien University of Strasbourg 23 rue Becquerel 67087 Strasbourg France Centre National de la Recherche Scientifique UMR 7178 67087 Strasbourg France Formerly affiliated with Grupo de Conducta Adaptativa e Interacci6n Psychology Faculty University of Barcelona 08035 Barcelona Spain

Numerous studies have investigated the remarkable variation of social features and the resulting structures across species. Indeed, relationships are dynamic and vary in time according to various factors such as environmental conditions or individuals attributes. However, few studies have investigated the processes that stabilize the structures within a given species, and the behavioral mechanisms that ensure their coherence and continuity across time. Here, we used a dynamic actor-based model, RSiena, to investigate the consistency of the temporal dynamic of relationships of a group of captive rooks facing recurrent modifications in group composition （i.e., the loss and introduction of individuals）. We found that changes in relationships （i.e., formation and removal） followed consistent patterns regardless of group composition and sex-ratio. Rooks preferentially interacted with paired congeners （i.e., unpopular attachment） and were more likely to form rela- tionships with individuals bonded to a current social partner （i.e., ＂friends of friends＂, or triadic closure）. The sex of individuals had no effect on the dynamic of relationships. This robust behav- ioral mechanisms formed the basis of inter-connected networks, composed of sub-structures of in- dividuals emerging from the enmeshment of dyadic and triadic motifs. Overall, the present study reveals crucial aspects of the behavioral mechanisms shaping rooks social structure, suggesting that rooks live in a well-integrated society, going far beyond the unique monogamous pair-bond.

关键词： corvids preferential attachment social interactions social network analysis temporal dynamics triadic closure.