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The Storm Tracks Response to Changes in Atmospheric Greenhouse Gas Concentration at the South of Brazil and Southwest Atlantic Ocean

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Atmospheric and Climate Sciences 2019年第4期9卷 545-557页

作者： Rose ane Pereira De Freitas Fernanda Casagrande Douglas Da Silva Lindemann Maria Angélica Gonçalves Cardoso Jeferson Prietsch Machado Forecasting and Meteorological Research Center Federal University of Pelotas(UFPEL)PelotasBrazil Earth System Science Centre(CCST-iNPE) National Institute for Space Research(INPE)Sao Jose dos CamposBrazil Federal University of Santa Maria(UFSM) Santa MariaBrazil Oceanography institute Federal University of Rio Grande(FURG)Rio GrandeBrazil

Here we investigate the ocean-atmosphere coupling and the contribution of the Sea Surface Temperature (SST) variations in: 1) Brazil-Malvinas Confluence (BMC) region, 2) Southwest Atlantic Ocean and 3) Southern Brazil. Numerical simulations of the ECHAM5/MPi-OM coupled ocean-atmosphere model were used to analyze the changes in the seasonal trajectory of the extratropical cyclones, in terms of intensification of physical mechanisms and implications for future scenarios. The numerical experiment for the future scenario considered an atmospheric CO2 concentration of approximately 770 ppm, which represents an increment of more than 350 ppm over the current values recorded by the Mauna Loa reference station. For this scenario, the results indicated a Storm Tracks (ST) displacement of 5° latitude toward south and changes of the meridional transport of sensible heat, close to 50°S. The increase in SST induces ST intensification and consequently an increase in the occurrence of extratropical cyclones. Overall, in the BMC region, we found a change in the pattern of cyclogenetic activity occurrence, with less frequent, but more intense events. On the Southern Brazilian region, the results of this study indicate increases in rainfall during summer months, whereas, a decrease in frequency and an increase in intensity were found for wintertime. We suggest that these changes could impact the climate dynamic of the Brazilian South coast, with a magnitude yet unknown.

关键词： Storm Tracks Confluence Brazil-Malvinas Atlantic Ocean

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计算机模拟在化学理论与实验教学中的应用

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大学化学 2016年第10期31卷 23-28页

作者：康明亮韩东梅 GEWiRTZ Océane 中山大学中法核工程与技术学院广东珠海519082

借助PHREEQC程序,探讨了计算机模拟在化学理论与实验教学中的应用。对于水溶液中的酸碱中和、络合反应、沉淀溶解平衡以及化学动力学等化学过程,建立了相应的反应模型。应用这些模型进行教学,促进了学生对所学知识的理解与掌握,提高了... 详细信息

借助PHREEQC程序,探讨了计算机模拟在化学理论与实验教学中的应用。对于水溶液中的酸碱中和、络合反应、沉淀溶解平衡以及化学动力学等化学过程,建立了相应的反应模型。应用这些模型进行教学,促进了学生对所学知识的理解与掌握,提高了教学质量,丰富了现代教学方法,为培养学生的创新实践能力及建立科学有效的研究方法打下了良好基础。

关键词：多媒体教学化学模拟 PHREEQC程序现代教学方法

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TRANSLATiNG THE MULTi-ACTOR APPROACH TO RESEARCH iNTO PRACTiCE USiNG A WORKSHOP APPROACH FOCUSiNG ON SPECiES MiXTURES

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Frontiers of Agricultural Science and Engineering 2021年第3期8卷 460-473页

作者： Henrik HAUGGAARD-NiELSEN Søren LUND ane K.AARE Christine A.WATSON Laurent BEDOUSSAC Jean-Noel AUBERTOT iman R.CHONGTHAM Natalia BELLOSTAS Cairistiona F.E.TOPP Pierre HOHMANN Erik S.JENSEN Maureen STADEL Bertrand PiNEL Eric JUSTES Department of People and Technology Roskilde UniversityDK-4000 RoskildeDenmark Scotland’s Rural College(SRUC) AberdeenScotlandUnited Kingdom AGiR Univ ToulouseENSFEAINRAECastanet-TolosanFrance AGiR Univ ToulouseINRAECastanet-TolosanFrance Department of Biosystems and Technology Swedish University of Agricultural SciencesSE-23053 AlnarpSweden instituto Navarro de Tecnologias e infraestructuras Agroalimentarias(iNTiA) 31610 VILLAVA(NAVARRA)Spain SRUC EdinburghScotlandUnited Kingdom Department of Crop Sciences Research Institute of Organic Agriculture(FiBL)CH-5070 FrickSwitzerland TERRENA AncenisFrance CiRAD Persyst DepartmentMontpellierFrance

The EiP-Agri multiactor approach was exemplified during a 3-day workshop with 63 project participants from the EU H2020 funded project“Redesigning European cropping systems based on species MiXtures”.The objective was to share firsthand experience of participatory research among researchers who were mostly not familiar with this *** participants were divided into smaller multidisciplinary groups and given the opportunity to interact with representatives from eight actor positions in the value chain of the agrifood cooperative Terrena located in Western *** four stages of the workshop were:(1)key actor interviews,(2)sharing proposed solutions for overcoming barriers,and(3)developing possible interdisciplinary *** of frustration were recorded serving both as a motivation for group members to become more aware of the scientific concerns and practices of their colleagues,as well as a recognition that some researchers have better skills integrating qualitative approaches than ***,the workshop format was an effective way to gain a common understanding of the pertinent issues that need to be addressed to meet overall multiactorapproach *** with the actor networks was identified and emphasized as a means to overcome existing barriers between academia and practice in order to coproduce a shared vision of the benefits of species mixture benefits.

关键词： agroecology codesign intercropping knowledge sharing participatory methods

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弹性地基上锥壳的精确解及应用

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土木工程学报 1991年第4期24卷 74-86页

作者：黄义郭仁俊西安冶金建筑学院西安矿业学院

弹性地基上锥壳的弯曲问题,尤其是它的精确解,至今尚未解决。因此获得这一结构的求解方法,对理论和工程实际都具有重要意义。本文对弹性地基上锥壳进行系统分析,提出了轴对称弯曲的位移求解方法,求出了数值结果。同时,计算了一些柔度... 详细信息

弹性地基上锥壳的弯曲问题,尤其是它的精确解,至今尚未解决。因此获得这一结构的求解方法,对理论和工程实际都具有重要意义。本文对弹性地基上锥壳进行系统分析,提出了轴对称弯曲的位移求解方法,求出了数值结果。同时,计算了一些柔度系数表,可方便地用于弹性地基上锥壳的组合结构分析。此外,作为本文的应用实例,还对储液罐作了计算。

关键词：弹性地基锥壳弯曲储液罐

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Multi-scale phylogenetic structure in coastal dune plant communities across the globe

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Journal of Plant Ecology 2014年第2期7卷 101-114页

作者： ane Kirstine Brunbjerg Jeannine Cavender-bares Wolf L.Eiserhardt Rasmus Ejrnæs Lonnie W.Aarssen Hannah L.Buckley Estelle Forey Florian Jansen Jens Kattge Cynthia Lane Roy A.Lubke Angela T.Moles Ana Laura Monserrat Robert K.Peet Julissa Roncal Louise Wootton Jens-Christian Svenning Ecoinformatics&Biodiversity Group Department of BioscienceAarhus UniversityNy Munkegade 114DK-8000 Aarhus C.Denmark Department of Bioscience Aarhus UniversityGrenaavej 14DK-8410 RøndeDenmark Department of Ecology Evolution and BehaviorUniversity of Minnesota1987 Upper Buford CircleFalcon HeightsMN 55108USA Department of Biology Queens University116 Barrie StreetKingstonOntario K7L 3N6Canada Department of Ecology Lincoln UniversityPO Box 84Canterbury 7647New Zealand Laboratoire d’Ecologie EA 1293 ECODIVFED SCALEUFR Sciences et TechniquesUniversitéde Rouen76821 Mont Saint Aignan CedexFrance institute of Botany and Landscape Ecology Soldmannstr.1517487 GreifswaldGermany Functional Biogeography Research Group Max Planck Institute for BiogeochemistryHans Knoell Str.1007745 JenaThuringiaGermany Lake Lily Ecology Ltd.PO Box 8455CanmoreAB T1W 2V2Canada Department of Botany Rhodes UniversityPO Box 94GrahamstownEast Cape 6140South Africa Evolution&Ecology Research Centre School of BiologicalEarth and Environmental SciencesThe University of New South WalesBotany RoadKensingtonSydneyNew South Wales 2034Australia Grupo de investigación en Sistemas Ambientales Complejos Facultad de IngenieríaUniversidad de FloresPedernera 275Ciudad de Buenos AiresArgentina Department of Biology University of North CarolinaChapel HillNC 27599-3280USA Department of Biology Memorial University of Newfoundland232 Elizabeth AvenueSt.John'sNL A1B 3X9Canada Department of Biology Georgian Court University900 Lakewood AvenueLakewoodNJ 08701USA

Aims Studies integrating phylogenetic history and large-scale community assembly are few,and many questions remain ***,we use a global coastal dune plant data set to uncover the important factors in community assembly across scales from the local filtering processes to the global long-term diversification and dispersal *** dune plant communities occur worldwide under a wide range of climatic and geologic conditions as well as in all biogeographic ***,global patterns in the phylogenetic composition of coastal dune plant communities have not previously been *** The data set comprised vegetation data from 18463 plots in New Zealand,South Africa,South America,North America and *** phylogenetic tree comprised 2241 plant species from 149 *** calculated phylogenetic clustering(Net Relatedness index,NRi,and Nearest Taxon index,NTi)of regional dune floras to estimate the amount of in situ diversification relative to the global dune species pool and evaluated the relative importance of land and climate barriers for these diversification patterns by geographic analyses of phylogenetic *** then tested whether dune plant communities exhibit similar patterns of phylogenetic structure within ***,we calculated NRi for local communities relative to the regional species pool and tested for an association with functional traits(plant height and seed mass)thought to vary along sea–inland *** Findings Regional species pools were phylogenetically clustered relative to the global pool,indicating regional *** showed stronger clustering than NRi pointing to the importance of especially recent diversifications within *** species pools grouped phylogenetically into two clusters on either side of the tropics suggesting greater dispersal rates within hemispheres than between *** NRi plot values confirmed that most communities were also phylogenetically clus

关键词： disturbance phylogenetic community structure plant functional traits plant height seed mass

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The Expression of Fas/FasL in Peripheral Blood Lymphocytes and the Level of iL-2 in Serum of Patients with Condyloma Acuminata

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2001年第2期21卷 171-173页

作者：刘厚君涂亚庭林能兴李家文黄长征刘志香 Department of Dermatology Xiehe Hospital Tongji Medical College Huazhong University of Science one Technology Wuhan

in order to investigate the role of the expression of the Fas/FasL in peripheral blood lymphocytes and the level of iL 2 in serum of patients with condyloma acuminata in the immune pathogenesis of CA, flow cytometry, indirect immunofluorescence labeling and ELiSA were performed to detect the expression of the apoptotic regulatory proteins Fas/FasL in PBLC and the level of iL 2 in serum of 60 patients with different course of CA. The results showed that the expression of Fas/FasL in PBLC of the group of short course in CA was significantly higher than that of the normal controls ; the expression of Fas, FasL in PBLC of the group of long course CA was significantly higher than that of the group of short course and the normal controls ( P ively); the level of iL 2 in serum of the group of short and long course CA was significantly lower than that of the group of normal controls ; the negative relation was revealed between the expression of Fas/FasL in PBLC and the level of iL 2 in serum of patients with CA . it was suggested that the abnormal apoptosis in PBLC and decreased level of iL 2 in serum of CA might play an important role in the course of CA.

关键词： Condyloma acuminata lymphocyte Fas/FasL iL 2

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Knowledge about Stroke among Workers in Public and Private Enterprises in Brazzaville and Their Attitudes towards Stroke Victims

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World Journal of Neuroscience 2022年第4期12卷 163-180页

作者： Josué Euberma Diatewa Cécilia Océane Kwama-Matiti Ghislain Armel Mpandzou Dinah Happhia Boubayi Motoula-Latou Eliot Prince Galiéni Sounga-banzouzi Paul Macaire Ossou-Nguiet Neurology Department University Hospital of Brazzaville Brazzaville Republic of the Congo Faculty of Health Sciences Marien Ngouabi University Brazzaville Republic of the Congo Neurology Department Loandjili General Hospital Pointe Noire Republic of the Congo

background: Stroke causes multiple complications, sequelae and a high mortality rate. Therefore, it is important to initiate or improve stroke awareness. Objectives: To assess knowledge about stroke among workers, explore workers’ attitudes towards stroke victims and identify factors influencing knowledge about stroke and workers’ attitudes. Methods: it was an analytical cross-sectional study. it was conducted from 16 August to 30 December 2020 (4.5 months). it was carried out in public and private enterprises in the formal sector in Brazzaville. it focused on workers aged 19 years and above. The study variables were socio-professional, psychosocial, epidemiological and clinical. Results: This study included 543 workers who fulfilled inclusion criteria. The knowledge scores for at least one warning sign and one risk factor were 74% and 77.7%, respectively. The average knowledge scores for warning signs and risk factors were 11.4% and 16.7%, respectively. For prevention measures, average knowledge score was 16.5%. The average score of knowledge for items related to post-stroke life of stroke victims was 78.3%. The average rate of positive attitudes of workers towards stroke victims was 81.4%. The determinants of knowledge about stroke were education (p = 0.039) and information (p = 0.040). The factors influencing workers’ normal attitude were education (p = 0.023) and knowledge about stroke (p Conclusion: Although the attitudes towards stroke victims are overall good, the level of knowledge about warning signs, risk factors and prevention measures is low. Because of this, it is important to organize public regular awareness and education campaigns in order to improve and increase knowledge about stroke.

关键词： Stroke Knowledge Attitudes Enterprises Brazzaville

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Phytochemical Screening, Study of Acute Toxicity and Hypoglycemic and Antihyperglycemic Activities of Silver Nanoparticles from Guibourtia tessmannii (Harms) J. Leonard (Caesalpiniaceae)

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Open Journal of Applied Sciences 2024年第1期14卷 118-130页

作者： Ngoulé Charles Christian Eya’ane Meva François Sone Enone Bertin Ngo Nyobe Biwole Caroline Tankeu Séverin Elisée Songue Pascal Nguene Jean Pierre Etame-Loe Gisèle Department of Pharmaceutical Sciences Faculty of Medicine and Pharmaceutical Sciences University of Douala Douala Cameroon Department of Biology of Plant Organisms Faculty of Sciences University of Douala Douala Cameroon

According to the World Health Organization, diabetes affects approximately 347 million people worldwide. its management is not within the reach of all social classes, therefore medicinal plants are still the first resort for many populations in Africa. The biological material used in this study was the trunk bark of Guibourtia tessmannii. 50 g of trunk bark powder were decocted in 500 ml of distilled water for 5 minutes were carried out. The method used for the synthesis of silver nanoparticles (AgNps) was an organometallic bio-reduction of silver nitrate salts mediated by various secondary metabolites contained in the plant extract. The study of the toxicity acute was conducted according to guideline 423 of the OECD protocol. The pharmacological activities were each carried out with 28 female rats divided into 7 groups of four rats. it was a question for the hypoglycemic activity of administering various doses of silver nanoparticles and other substances to the rats thirty minutes after the carbohydrate intake and for the anti-hyperglycemic activity of administering the same substances to the rats thirty minutes before the carbohydrate intake. The extraction yield was 8.76%. Only the alkaloid test was negative. After acute toxicity study, the LD50 was greater than 2000 mg/kg. Blood sugar tests revealed that glibenclamide 5 mg/kg, which is the reference molecule, lowered blood sugar more than the other treatments applied in the other batches. it was followed by treatment with silver nanoparticles at a dose of 400 μg/kg in both tests. it was therefore concluded that silver nanoparticles from G. tessmannii are good for the formulation of improved traditional medicines and bring up their afficacity .

关键词： Guibourtia tessmannii Nanoparticles Hypoglycemia Anti-Hyperglycemia

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弹性基上锥壳固有振动的精确解

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兰州大学学报（自然科学版） 1989年第1期25卷 23-31页

作者：孙博华黄义兰州大学西安冶金建筑学院

本文从弹性基(Winkler 模式)上锥壳的 DMV 型位移微分方程组出发,通过引入一个位移函数 U(s,θ,t)(在极限情况下,将退化成 B.3.BπacoB 对于圆柱壳引入的位移函数),将基本微分方程组化成为一个可解偏微分方程.这个方程的精确解用级数形... 详细信息

本文从弹性基(Winkler 模式)上锥壳的 DMV 型位移微分方程组出发,通过引入一个位移函数 U(s,θ,t)(在极限情况下,将退化成 B.3.BπacoB 对于圆柱壳引入的位移函数),将基本微分方程组化成为一个可解偏微分方程.这个方程的精确解用级数形式给出.当固有频率ω=(kg/ρh)^(1/2)时,解用广义超几何函数给出;轴对称问题的解用 Bessel 函数给出.

关键词：弹性基微分方程组上锥壳振动

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微型化学实验在中学化学新课程改革中的实践与探索

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新疆师范大学学报（自然科学版） 2006年第3期25卷 408-411页

作者：康安婀翁之望新疆师范大学生命与环境科学学院新疆乌鲁木齐830054

文章通过微型化学实验在教学中的应用,阐述其在化学教学中的作用与意义。

关键词：微型化学实验(ML) 课程改革实践与探索

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