74 research outputs found
Evolutionary and demographic processes in the invasive weed Microstegium vimineum
No full textMicrostegium vimineum (Trin.) A. Camus (stiltgrass) is considered among the most invasive plants in the eastern United States. There has been considerable study of this species’ ecology and management though far less attention has been paid to its molecular ecology and the evolutionary processes which may influence its invasion success. Here, I describe a newly developed molecular marker system (microsatellite) which I used to examine M. vimineum’s genetic population structure and diversity in both its native and introduced ranges. I found clear signals that M. vimineum’s mating system is the most important determinant of the species’ population structure and variability. The invasive range had lower genetic diversity overall, probably due to founder effects. Also, population and regional genetic differentiation appeared to be ‘in process’ in the invasive range. Furthermore, M. vimineum’s mixed cleistogamous/chasmogamous mating system allowed for the near fixation of microsatellite genotypes in a given population by high rates of selfing, while still permitting the persistence of allelic diversity and generation of new genotypes at low frequency via occasional outcrossing. Thus, this mating system may confer adaptive advantage to the species as it settles upon fit genotypes in a given area while retaining evolutionary potential for range expansion into new habitats. I also attempted to discern adaptively significant phenotypes in M. vimineum through the measurement of phenological variation of plants originating from across the species’ invasive range under manipulated light treatments. Flowering time and biomass were both strongly correlated with the latitude of population origin such that populations collected from more northern latitudes flowered significantly earlier at lower biomass than populations from southern locations. This pattern suggests rapid adaptive evolution of phenology over a period of less than one hundred years, and such changes have likely promoted the northward range expansion of this species. Interestingly, barriers to gene flow, including bottlenecks and inbreeding, have apparently not forestalled adaptive processes for this plant. Based on literature review and these new data, I hypothesize that adaptive evolution of phenological traits may be widespread in many invasive plant species and an essential process during range expansion.Ph. D.Includes bibliographical referencesIncludes vitaby Ari E. Nov
Lou Novy para (1743) de Jean-Baptiste Coye : une pièce française ou une pièce provençale ?
No full textInternational audienceWritten by the Arlesian Jean-Baptiste Coye (1711-1771) and published in 1743, the play Lou Novy para is a comedy of the kind found in French and Occitan : a young girl refuses to marry the husband her father has chosen for her, she prefers her lover. she prefers her lover. He convinces her to run away together, but the ship they are embarking on is caught in a storm on the Rhône. Faced with the two surviving lovers and at the urging of his brother, the intractable father finally gives in and the marriage is decided. The subject and its treatment are in line with contemporary French theatre practice, which the author seems to know well. There are many references to the French framework and the language contains a considerable number of francisms. This proximity to French aesthetic and linguistic models can be explained by Coye's literary ambition to place Provençal on the same level as French-language theatre.Écrite par l’Arlésien Jean-Baptiste Coye (1711-1771) et publiée en 1743, la pièce Lou Novy para se présente sous la forme d’une comédie comme on en trouve en français et en occitan : une jeune fille refuse d’épouser le mari que son père a choisi pour elle, elle préfère son amoureux. Celui-ci la convainc de fuir avec lui mais le navire sur lequel ils s’embarquent est victime d’une tempête sur le Rhône. Face aux deux amoureux rescapés et sur les instances de son frère, le père intraitable finit par céder et le mariage est décidé. Le sujet et son traitement sont conformes aux pratiques du théâtre français contemporain que l’auteur semble bien connaître. Les références au cadre français sont nombreuses et la langue recèle un nombre considérable de francismes. Cette proximité avec les modèles esthétiques et linguistiques français s’explique par l’ambition littéraire de Coye qui voit là un moyen de situer le provençal au même niveau que la création théâtrale de langue française
E-Hub - Solar Powered Electric Vehicle Charging Station: Electrical system design, Optimisation and Testing
No full textThe development in technology and increased public interest has attributed to an unprecedented growth of E-mobility in recent years. Electric vehicles (EVs) even though viewed as emission free and environmental friendly can still contribute towards indirect emissions if charged by using traditional fossil fuels. The integration of renewable energy sources is hence paramount to approach a completely carbon free future of E-mobility integration in the transportation sector. This thesis project aims at designing and implementing a photovoltaic (PV) based charging station for a fleet of ten EVs in the TU Delft campus. The complete solar powered charging station for EVs is hence called as E-Hub, which aims to facilitate the development of e-mobility in the TU Delft campus by providing charging facilities that can be scaled up along with a competitive business model. At first, the driving pattern of EV owners in the Netherlands is analysed to categorize employees and visitors. The driving pattern is used to estimate the load profile and the yearly charging demand for the EV fleet in the TU Delft campus. Calendar effects such as holidays and vacations are taken into account to accurately predict the charging demand. A thorough PV system design is carried out to meet the estimated charging demand, followed by a practical and economic feasibility study. The components required for the E-hub are listed along with an estimation of the initial investment. Later an optimisation model is used to develop power management algorithms for optimum economical performance based on the designed technical framework. Nine charging strategies are considered for both summer and winter conditions. The performance of each strategy is analysed under the estimated load profile and designed PV system. The model is also extended to explore the integration of battery systems and its effect on the technical and economical performance of the E-Hub. This battery system can hence function as a virtual power plant to supply power back to the grid in times of peak load and facilitate in stabilization of the grid. A proof of concept is then built to test the developed power management algorithms in the Electrical Sustainable Power Lab (EWI, TU Delft). The Eneco SolarEdge and Tesla Powerwall (ESTP) set-up is used to study the power flow and a system is designed to dynamically control and monitor the ESTP set-up. It was concluded that such a system is technically and economically feasible and can be implemented in the university to provide an environmentally friendly charging infrastructure to electrical vehicles.E-HubElectrical Engineering | Sustainable Energy Technolog
Heating and Ventilation System Design for Villa House
No full textTato bakalářská práce je zaměřena na problematiku navrhování systémů vytápění a větrání pro vilový dům v Novém Vestcí v České republice. Praktická část se skládá z nezbytných výpočtů a návrhu dispozičního řešení systému, jakož i navrhování vhodných technických prvků pro ventilační a vytápěcí systémy. Teoretická část zahrnuje studium tří hlavních typů obnovitelných zdrojů energie vhodných pro rodinné domy. Cílem studie je přezkoumat možnosti systémů získávání energie z obnovitelných zdrojů a porovnát pozitivní a negativní aspekty každého z praktického hlediska.This bachelor project is focused on the topic of designing heating and ventilation systems for the villa house in Novy Vestec, Czech Republic. The practical part primary consists of necessary computations and system layout design, as well as designing suitable technical elements for the ventilation and heating systems. The theoretical part includes the study of three main types of renewable energy sources, suitable for private family houses. The goal of study is to review the possibilities of renewable energy sourced power generating systems and look at the positive and negative aspects of each from practical point of view
Inhibition of Bacillus subtilis respiration on glucose, formate and succinate by certain anesthetic agents
No full textThe non-proliferating or “resting” cell technic and the Werburg respirometer have been employed to study the respiration of Bacillus subtilis Koch-Novy with glucose, formate and succinate as substrates.
The enzymatic oxidation of these substrates in the presence of cyanide, urethane, chloral hydrate, chloroform and other have been investigated and the effects of these agents over a range of concentrations have been noted. Graphs have been prepared for comparison of the oxygen consumption and carbon dioxide liberation values for Bacillus subtilis Koch-Novy in the presence and absence of the various inhibitory agents.
Differences between the oxidation of succinate by bacteria and by mammalian brain tissue have been pointed out. Information concerning the oxidations of brain tissue was obtained from the previous work of Quastel et al and Grieg (11, 23, 24).
Gaseous exchange which suggest some sort of metabolic action by Bacillus subtilis Koch-Novy on chloretone has been noted.
The author has expressed an opinion regarding the advisability of employing members of the genus Bacillus for studies concerning the mode of section of anesthetic agents.M.S
Zahradně architektonické úpravy obytných a pěších zón
No full textThis Bachelor's thesis deals with residential areas and pedestrian precincts and their use and realization in a city. The thesis is composed of two fundamental parts -- textual matter and practical. In the first part was studied available literature and were visited residential areas and pedestrian precincts in the cities of European stature -- Budapest, Wien, Krakow and domestic cities -- Prague and Brno. From these visited zones were deduced subjective findings which were compared with objective findings and finally led to information about transport, infrastructure, amount and position of vegetative components, furniture and car parks. These findings were applied by the author of the thesis during the author's plan in the chosen city -- Novy Jicin. The second part is focused on practical application of gained subjective and objective information from the first part in real city street. The city Novy Jicin was selected for the practical application as the city with great potential to the future. There were made analysis of Novy Jicin and analysis of its streets -- Husova and Novellara. Both streets are projected and more specifically elaborated in a ground plan, section view, axonometry and perspectives
(Peer Review + Similarity + Document) Keanekaragaman Ikan yang Bernilai Ekonomi dan Kandungan Logam Berat Pb dan Cd pada Ikan Sapu-Sapu di Sungai Bedadung Jember
No full textWater of river Bedadung in urban areas used by the local community for bathing, washing and toilet, and dispose of garbage and waste can be observed during the dry season. Whereas water of river Bedadung used by the Regional Water Company (PDAM) Jember as a raw water source in the area of Villa Tegal Besar estate District of Kaliwates. Besides the existing fish used for consumption by the public, both for their own consumption or for sale. The qualitative research with quantitative descriptive design. Location of research
conducted by purposive sampling, the location of sampling carried out on three stations, namely: 1) Station 1 is located around the bridge Jl. Mastrip District of Sumbersari, 2) Station 2 is located in the vicinity of the bridge Jl. Ahmad Yani District of Sumbersari (or better known as the bridge "Gladak Twins", and 3) Station 3 located around the road bridge Imam Bonjol District of Kaliwates. Sampling was conducted in October
2015.The content of heavy metals Pb and Cd in fish brooms with AAS test, then the results compared with a maximum limit of heavy metal contamination in food in ISO 7387: 2009.The fish were caught as many as five types: fish “Sapu-sapu” (Hypostomus plecostomus), “Nila” (Oreochromis niloticus), “Lunjar Pari” (Rasbora argyrotaenia), “Wader” (Puntius brammoides), and Goldfish Comet (Carassius auratus). Based on the analysis with AAS test can be concluded that the Hypostomus fish caught in the river Bedadung on October 1, 2015 the average contains heavy metals amounted to 0.2563 ppm Pb and Cd of 0.172 ppm
PENERAPAN MODEL CONTEXTUAL TEACHING AND LEARNING BERBANTUAN PERMAINAN PUZZLE UNTUK MENINGKATKAN HASIL BELAJAR IPS SISWA KELAS IV SD 1 GOLANTEPUS
No full textThis research is motivatedby thelack ofstudent learning outcomeswascausedbyteacherswhodominatethe learningactivitiesanduse the lecture method. It made lowlearning activitiesand lowlearning outcomes.Therefore, the author hope the application of Contextual Teaching andLearning modelaidedpuzzlegamescanimprove student learning outcomesin fourth gradersGolantepus 1 elmentary school. The purposeof thisresearchwasconducted(1) To find the increase level of studentlearning the outcomes ofsocial studies inthe fourth gradeGolantepus 1 elmentary school by applyinga model-assisted Contextual Teaching andLearningpuzzle game, (2) To describean increase instudent learning activitiesthe fourth gradeGolantepus 1 elmentary school by applying the modelContextual Teaching andLearningpuzzle gameaidedstudents, (3) To describe theteacher's skillin managinglearningby applying the modelContextual Teaching andLearningaidedpuzzle game.
Results’ learning is achange inbehaviorthat occursafterfollowing theteaching and learning processin accordancewith theintended purposethatincludescognitive,affectiveandpsychomotor. Contextual Teaching andLearning modelswasalearning modelwhich relatesthematerial being taughtto the real situationof studentsandencourages studentstomake connections between theknowledge possessedbyits application ineveryday life. Puzzle gameis one formof socialgamebecausethe game isdonein groupsandcan not beplayed alonebyoneperson.
This research isClassroom Action Research(CAR), whichimplements oftwocycleswith a model-assisted Contextual Teaching and Learningpuzzle game withstep(1) a planof action, (2) action, (3) observation, and(4) analysisandreflection. Regardingby usingdata collection methods, observation, interviews, anddocumentation.Data analysis techniquesused includequalitative andquantitativetechniques.
The results ofthe studyin the first cycleshowedcognitive learningoutcomesof studentsthe percentage offirst cyclereaches72.72% withgoodqualificationsandto increasethe percentage ofsecond cyclereached86.95% withverygoodqualifications. Affectivelearning outcomesof studentsfirst cyclereaches67% the percentage ofwell-qualifiedandexperiencedan increase inthe percentage ofsecond cyclereaches74.4% withgoodqualifications. Learning outcomesof student’spsychomotordomain ofthe first cyclereachesthe percentage of65.15% with agoodqualifyingandreachingthe second cycleincreasedthe percentage of78.74% with qualifiedteachers ingood cycles.The author found the percentage of73.66% withgoodqualificationandexperiencean increase incycle IIto 87.5% withexcellent qualifications.
The conclusionsin this studytheapplication of modelsContextual Teaching andLearningaidedpuzzlegamescanimprove student learning outcomesfourth gradeGolantepus 1 elmentary school. Suggestions in this study, studentsshoulddare toexpress an opinion, but it is alsonecessarylevelof cooperationgroupfor the results obtainedover.Forteachers shouldusemodelsandcreatethe inovatif learning that make students happier that before. Then the school shouldprovidethe necessaryinfrastructuretofacilitatethe learningprocess
Пересяленне ўкраінскага насельніцтва з Бяла-Падляскага райпрадстаўніцтва СНК БССР ва Украіну ў 1944–1946 гг.
No full textUkrainians were transferred from Poland to Ukraine throw Belarus following the Polish-Belarussian agreement of 9 September 1944 on resettling Belarussians, Russians and Ukrainians from Poland to Belarus.
The article discusses ethnic, religious, and political motivation for resettling to Ukraine. Author shows the infl uence of the underground Polish movement (Armija Krajova) on the attitude of Ukrainians resettle from Poland to Ukraine during the resettling process. The author analyses in details the economic power of Ukrainians resettles (on the examples of small village Pavlov-Novy) and their willing or not willing to have a land in Ukraine and work as farmers.
From the beginning of resettle process till mid-1946, over half of those who were registered refused to resettle in soviet Ukraine and preferred to stay in Poland. The main reasons why they preferred to stay in Poland were the next: fear of soviet authority, national, religious repression in soviet Ukraine, fears of kolkhos system and inevitability of loosing of their property
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