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Dissertations / Theses on the topic 'Weed dynamics'

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1

Haramoto, Erin R. "The Effects of Brassica Cover Crops on Weed Dynamics." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/HaramotoER2004.pdf.

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2

Lapham, J. "The population dynamics of the weed, Cyperus esculentus L." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354085.

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3

Harre, Nick T. "Dynamics of Early-Season Weed Management and Soybean Nutrition." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1422.

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The popularity of growers using only postemergence (POST) herbicides for weed management in soybean was enabled by the commercialization of glyphosate-resistant soybean. The efficacy and flexibility provided by this technology diminished the use of soil residual herbicides and arguably, increased soybean yield loss from early-season weed competition. While, the rapid evolution and biogeographical spread of herbicide-resistant weeds, especially glyphosate-resistant biotypes, has renewed interest into the use of soil residual products, herbicide-resistant soybean technologies continue to be deve
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4

Watson, Simon John. "The dynamics of weed seed banks in integrated farming systems." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394060.

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5

McCloskey, Moya. "Field management and the structure of arable weed communities." Thesis, Anglia Ruskin University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259464.

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6

Harbuck, Kristin Suzanne Bates. "Weed seedbank dynamics and composition of Northern Great Plains cropping sytems." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/harbuck/HarbuckK0807.pdf.

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With a growing concern about sustainability of agricultural production systems, interest in integrated weed management systems has increased. Increasing the understanding of weed seedbank dynamics will improve efficiency of management. The objectives of this study were to 1) quantify weed seedbank dynamics in response to seed density and burial depth, 2) determine weed seedbank decay at varying seed densities and burial depths, 3) quantify weed seed predation in wheat and tilled fallow fields, and 4) characterize and compare weed seedbanks in organic and conventional no-tillage production fiel
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7

Ominski, Pamela D. "Weed population dynamics as influenced by alfalfa and alfalfa termination method." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ32208.pdf.

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8

Brak, Bastiaan. "Modelling weed population dynamics : impact of cultural control and climate change." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/2743/.

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Over the last three decades, concern about food safety and the management of natural resources has increased. Instigated by the previous EU pesticide review, (EU 91/414) carrot growers in particular have been hit by the revocation of several post-emergence herbicides. There is real concern among growers that this may impair profits. To identify alternative weed control strategies, a modelling framework capable of simulating the impact of alternative weed management strategies on long-term weed population dynamics, was proposed. Scentless mayweed (Tripleurospermum inodorum) was chosen as model
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9

Mirsky, Steven B. "Evaluating constraints and opportunities in managing weed populations with cover crops." Restricted access (UM), 2008. http://libraries.maine.edu/gateway/oroauth.asp?file=orono/etheses/37803141.pdf.

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These (Ph.D.)--Pennsylvania State University, 2008.<br>Title from PDF title page. Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (leaves 164-171). Also issued in print.
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10

Gasparini, Valentina. "Weeds in conservation agriculture. Biology, emergence dynamics and modelling to improve their control." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3425278.

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The increasing attention of public opinion towards the environmental impact of production activities has made it imperative to reduce the aggressiveness of productive systems on the environment. Also the agricultural sector, considered one of the principal strengths of transformation of the territory, is asked to predispose eco-compatible programmes of production. The institutions and national and international organisms encourage the adoption of techniques of conservative agriculture as a tool for guaranteeing, on the one hand the necessary crop production to face the demand for food of the g
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11

Lewis, Timothy D. "Linking soil erosion processes with arable weed seedbank dynamics to inform sustainable cropping." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/48280cfd-6ec8-480a-bba5-3a98bea5b605.

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Accelerated soil erosion affects sustainable food production through the degradation of arable soils resulting in lower crop yields and compromising biodiversity. Over the past 50 years, the weed seedbank has been declining due to farming intensification, increased herbicide use and weed suppression through competitive autumn crop planting. However, there is less recognition of the potential of soil erosion affecting the weed seedbank. This thesis contributes to an improved understanding of the effect of geomorphological processes (soil erosion) on biological systems (weed seedbank) in arable
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12

Mashingaidze, Nester. "Weed dynamics in low-input dryland smallholder conservation agriculture systems in semi-arid Zimbabwe." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/24412.

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The reported requirement for a higher weeding effort due to increased weed infestations under conservation agriculture (CA) relative to conventional mouldboard plough tillage is perceived by both smallholder farmers and extension workers as the main limiting factor to the widespread adoption of CA by smallholder farmers in southern Africa. However, proponents of CA argue that weeds are only a problem under CA in the initial two years and decline afterwards resulting in reduced labour requirements for weeding under CA. They further posit that weeds are only major problem where minimum tillage (
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13

Kelton, Jessica Ann Price Andrew J. "Herbicide performance and weed seedbank dynamics as affected by high residue conservation agriculture systems." Auburn, Ala., 2009. http://hdl.handle.net/10415/1929.

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14

Ullrich, Silke. "Weed Population Dynamics in Potato Cropping Systems as Affected by Rotation Crop, Cultivation, and Primary Tillage." Fogler Library, University of Maine, 2000. http://www.library.umaine.edu/theses/pdf/Ullrich.pdf.

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15

Siderov, Kris, and kris siderov@rmit edu au. "An investigation of the invasion dynamics of Asparagus asparagoides at the habitat level using spatial analytical techniques." RMIT University. Mathematical and Geospatial Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20061010.095929.

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This thesis reports on research that examines the early stage invasion process of Asparagus asparagoides (L.) W. Wight (bridal creeper), primarily a bird-dispersed weed, in a remnant vegetation patch. The study site is on Phillip Island, approximately 100 kilometres south east of Melbourne, Victoria. Asparagus asparagoides invasion of the remnant vegetation reserve is a relatively recent phenomenon. Landscape elements that affect bird dispersal and vegetation types that affect seedling establishment may be important factors that limit or enhance the spread of A. asparagoides. A s
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16

Gilbert, J. "The population dynamics of field pansy (Viola arvensis) and red deadnettle (Lamium purpureum) in winter cereal and oilseed rape fields." Thesis, Keele University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382899.

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17

Abu-Dieyeh, Mohammed H. "Population dynamics of dandelion (Taraxacum officinale) in turfgrass as influenced by a biological control agent, Sclerotinia minor." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100308.

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Control of Taraxacum officinale (dandelion) and other broadleaf weeds in turfgrass has been readily achieved with phenoxy herbicides, but the herbicide option has been revoked in many regions, necessitating alternative weed control strategies. One biological alternative is Sclerotinia minor, an Ascomycete fungus. The impact of S. minor on broadleaf weed dynamics and biotic interactions were studied in a turfgrass environment. The goal was to maximize effectiveness of a S. minor formulation as a biocontrol of dandelion using an ecological approach. S. minor efficacy was not affected by turf mic
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18

Manley, Brian S. "Crop and herbicide rotation effects on weed population dynamics and the characterization of imidazolinone-resistant smooth pigweed (Amaranthus hybridus)." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151325/.

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19

Meiss, Helmut. "Diversifying crop rotations with temporary grasslands : potentials for weed mangement and farmland biodiversity." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00575607.

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Crop rotation may be used to prevent the continuous selection of particular weed species adapted to one crop type. This might be useful for weed management, economy in herbicide applications and promoting biodiversity. Common simple crop sequences might be diversified by introducing perennial forage crops. Impacts of such perennial crops on weeds were studied with four approaches : 1) Large-scale weed surveys in 632 fields in western France showed that weed species composition differed most strongly between perennial alfalfa crops and annual crops. Comparisons of fields before, during and afte
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20

Asshleb, Almabrouk A. "The use of the fungus Ascochyta caulina as a biological control agent for the weed Chenopodium album. Evaluation of the bioherbicide formulation efficacy of Ascochyta caulina on different life stages of the weed plant Chenopodium album under laboratory and field conditions comparing Libyan and UK populations." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4431.

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Chenopodium album is considered one of the most important weeds adversely affecting agricultural production due to its highly competitive influence on field crops. Chemical herbicides have increased the efficiency of farming, but recently problems of herbicideresistant weed populations and herbicide residues in soil, water, food products and effects on non-target organisms have increased, consequently, other methods of control of weeds by using specific fungi as herbicides have been suggested. The purpose of this research was to evaluate the biological control of the weed Chenopodium alb
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21

Vasileiadis, Vasileios P. "An investigation of weed seedbank population dynamics under various tillage and herbicide regimes in a rotational sequence of industrial crops in northern Greece." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443360.

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22

Mavunganidze, Zira. "Weed population dynamics and management in a smallholder farming system in transition from conventional tillage to planting basins in a semi-arid area." Thesis, University of Pretoria, 2014. http://hdl.handle.net/2263/79773.

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This study was conducted in Kadoma, Zimbabwe in the smallholder sector (SH) during 2009/2010 and 2010/2011 seasons. The overall aim of the study was to understand the changes that occur to weed densities, species diversity and management under Minimum Tillage (MT) system of planting basins which is a component of Conservation Agriculture (CA) being promoted in the SH sector. A survey was carried out to determine the biophysical and socio-economic factors that affect the adoption of CA. The paired plot technique was used to compare weed densities and diversity in planting basins (PB) and Conven
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23

Asshleb, Almabrouk Amer. "The use of the fungus Ascochyta caulina as a biological control agent for the weed Chenopodium album : evaluation of the bioherbicide formulation efficacy of Ascochyta caulina on different life stages of the weed plant Chenopodium album under laboratory and field conditions comparing Libyan and UK populations." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4431.

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Chenopodium album is considered one of the most important weeds adversely affecting agricultural production due to its highly competitive influence on field crops. Chemical herbicides have increased the efficiency of farming, but recently problems of herbicideresistant weed populations and herbicide residues in soil, water, food products and effects on non-target organisms have increased, consequently, other methods of control of weeds by using specific fungi as herbicides have been suggested. The purpose of this research was to evaluate the biological control of the weed Chenopodium album by
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24

Bateman, Timothy M. "Exploring and Describing the Spatial and Temporal Dynamics of Medusahead in the Channeled Scablands of Eastern Washington Using Remote Sensing Techniques." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6896.

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Medusahead is a harmful weed that is invading public lands in the West. The invasion is a serious concern to the public because it can reduce forage for livestock and wildlife, increase fire frequency, alter important ecosystem cycles (like water), reduce recreational activities, and produce landscapes that are aesthetically unpleasing. Invasions can drive up costs that generally require taxpayer’s dollars. Medusahead seedlings typically spread to new areas by attaching itself to passing objects (e.g. vehicles, animals, clothing) where it can quickly begin to affect plants communities. To be e
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25

Dunlop, Elizabeth A. "Mapping and modelling the invasion dynamics of Senna obtusifolia at different levels of scale in Australia." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16490/1/Elizabeth_Dunlop_Thesis.pdf.

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The invasion of natural environments by alien species is a significant threat to the ecological integrity of these systems. Senna obtusifolia is an aggressive invasive weed recently introduced to Australia that is having significant impacts on grassland ecosystems on the Cape York Peninsula. Currently the species is inadequately managed and so range expansion continues. The invasion potential of S. obtusifolia in Australia remains unknown, as does much about its behaviour and management in natural systems. This project undertakes extensive mapping and modelling of the current and future distri
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26

Dunlop, Elizabeth A. "Mapping and modelling the invasion dynamics of Senna obtusifolia at different levels of scale in Australia." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16490/.

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The invasion of natural environments by alien species is a significant threat to the ecological integrity of these systems. Senna obtusifolia is an aggressive invasive weed recently introduced to Australia that is having significant impacts on grassland ecosystems on the Cape York Peninsula. Currently the species is inadequately managed and so range expansion continues. The invasion potential of S. obtusifolia in Australia remains unknown, as does much about its behaviour and management in natural systems. This project undertakes extensive mapping and modelling of the current and future distri
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27

Rounsaville, Todd J. "INVASION DYNAMICS OF THE EXOTIC LIANA EUONYMUS FORTUNEI (TURCZ.) HAND.-MAZZ. (WINTERCREEPER)." UKnowledge, 2017. http://uknowledge.uky.edu/biology_etds/40.

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Elevated atmospheric CO2 has been implicated as a driver of increased liana abundance worldwide. Known as disturbance creators and beneficiaries, lianas possess the potential to significantly influence forest ecosystems. I investigated the early-invasion dynamics of Euonymus fortunei (wintercreeper), an evergreen liana that is invading forests in eastern North America, disrupting native plant communities and ecosystem functions. Wintercreeper is widely cultivated as an ornamental groundcover, frequently invading natural areas via asexual stem growth. Invasion of remote natural areas is depende
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28

Murungu, Farayi Solomon. "Evaluation and management of cover crop species and their effects on weed dynamics, soil fertility and maize (Zea mays L.) productivity under irrigation in the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2010. http://hdl.handle.net/10353/335.

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The current interest in conservation agriculture (CA) technologies is a result of the need to reduce excessive land degradation in most crop producing areas as well as to enhance sustainable food production. Cover crops that are usually grown under CA to provide soil cover, may offer secondary benefits, depending on the farming system. The concept of growing cover crops is a relatively new phenomenon to smallholder farmers. Production of large biomass yields and weed suppression from cover crops were major challenges affecting success and uptake of CA technologies by smallholder irrigation far
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29

Lintell-Smith, Gail. "The population dynamics of weeds in winter wheat." Thesis, University of East Anglia, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297011.

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30

Krank, Benjamin. "Improvement of finite element spot weld models for structural dynamics." Thesis, KTH, Farkost och flyg, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-77624.

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The ACM 2 spot weld model is the currently most widely used spot weld model in industry. It is designed to be tuned using parameters to represent the stiffness characteristics of a spot weld in a suitable way. The choice of these parameters is however often associated with uncertainties. Therefore, the set of parameters with best performance is determined by employing an updating algorithm. Further, the result is compared to a new category of models, the so called Spider models, which intend to overcome mesh dependence in the spot weld area by re-meshing the structures locally. The results are
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31

Stock, Daniel. "The Dynamics of Lantana Camara (L.)Invasion of Subtropical Rainforest in Southeast Queensland." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/366732.

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Lantana Lantana camara L. is a highly aggressive exotic environmental weed that is weestablished throughout eastern Australia and is reportedly able to displace native vegetation under a range of conditions. Whether lantana is able to displace native vegetation in the absence of anthropogenic disturbance is subject of some disagreement in the literature. The question remains, however, as to what is the future for the Gold Coast hinterland rainforests in the face of invasion by lantana? This study is mainly directed at addressing the dynamics at the lantana/rainforest interface, especially lant
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32

Cloutier, Daniel. "Population dynamics of yellow nutsedge (Cyperus esculentus L.)." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74003.

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33

Crider, Kimberly Kay. "BIOLOGICAL CONTROL: EFFECTS OF TYRIA JACOBAEAE ON THE POPULATION DYNAMICS OF SENECIO JACOBAEA IN NORTHWEST MONTANA." The University of Montana, 2010. http://etd.lib.umt.edu/theses/available/etd-03092010-140634/.

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<p>Biological control, using introduced, specialist insects is a common strategy for controlling plant invasions. However, the efficacy of biological control agents in controlling their host plants is rarely quantified population level. I quantified the impact of a specialist biological control agent, the cinnabar moth <i>(Tyria jacobaeae)</i> on its host plant, tansy ragwort <i>(Senecio jacobaea)</i> in northwest Montana. Cinnabar moth damage and its effects on important plant vital rates were tested with and without specialist herbivores. The presence of moth larvae corresponded to a reducti
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34

Ulf-Hansen, Peter Fleming. "The dynamics of natural selection for herbicide resistance in grass weeds." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240807.

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35

Short, Nicolyn. "Implications of green manure amendments on soil seed bank dynamics." University of Western Australia. School of Earth and Geographical Sciences, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0022.

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[Truncated abstract] Weeds are a major limitation to agricultural and horticultural production and the main method of control is the use of herbicides. In addition to the resulting chemical pollution of the environment, the wide spread and continues use of herbicides have resulted in many weeds developing resistance to commonly used herbicides. This study investigated the potential of using green manures as a cultural method of control of weed invasion in agricultural fields. To understand the general mechanisms involved in the suppression of seed germination in green manure amended soils, see
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36

Čepulienė, Rita. "Dynamics of accumulation of allelochemical compounds in oilseed rape and effect on agricultural crops and weeds." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20141230_175312-56329.

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Research objective. The study was aimed to identify the dynamics of accumulation of phenolic compounds and glucosinolates in oilseed rape and the effect of different morphological parts of oilseed rape on agricultural plants and weeds. The goals of the studies. The following goals were set in order to reach the aim of the studies: 1. To identify the dynamics of accumulation of phenolic compounds in oilseed rapeduring vegetation. 2. To analyse composition of allelochemical compounds of different morphological parts of rape residues after harvesting and ascertain quantitative and qualitative cha
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37

Samson, Kimberly M. "The effects of a five-week core stabilization-training program on dynamic balance in tennis athletes." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3821.

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Thesis (M.S.)--West Virginia University, 2005<br>Title from document title page. Document formatted into pages; contains vi, 101 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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Lefevre, Caitlin Elisabeth. "Determining Clinical Impairments that Lead to Changes in Dynamic Knee Valgus Following a 4-week Feedback Intervention." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1396268934.

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39

Sanders, Johnny Ray. "Understanding the material flow path of the friction stir weld process." Master's thesis, Mississippi State : Mississippi State University, 2005. http://library.msstate.edu/etd/show.asp?etd=etd-11102005-142957.

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40

Anguish, Benjamin M. "The effects of a randomized four-week dynamic balance training program on individuals with chronic ankle instability." Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/11088.

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Thesis (M.S.)--West Virginia University, 2010.<br>Title from document title page. Document formatted into pages; contains vi, 93 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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Piegaro, Anthony B. "The comparative effects of four-week core stabilization & balance-training programs on semidynamic & dynamic balance." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2911.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains vii, 90 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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Dias, Nivea Maria Piccolomini. ""Tolerância de espécies de capim-colchão (Digitaria spp) a herbicidas na cultura de cana-de-açucar"." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/64/64132/tde-04022005-102226/.

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É conhecido que a utilização repetitiva e consecutiva dos mesmos herbicidas, ou de herbicidas diferentes, porém com mesmo mecanismo de ação, exerce uma pressão de seleção sobre as populações de plantas daninhas controladas. As duas formas principais de resposta das populações de plantas daninhas resultantes da pressão de seleção dos herbicidas são a mudança da flora pela seleção de espécies de plantas daninhas tolerantes, ou a seleção de biótipos de plantas daninhas resistentes aos herbicidas. Na prática têm sido observadas, pelos produtores de cana-de-açúcar, mudanças de flora pela seleção de
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43

Lee, Hyunwook. "Effects of a 4-Week Dynamic Balance Training with Stroboscopic Glasses on Postural Control in Patients with Chronic Ankle Instability." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9031.

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Context: Individuals with chronic ankle instability (CAI) rely more on visual information during postural control due to impaired proprioceptive function. The increased reliance on visual information may increase the risk of injury when their vision is limited during complex sports activities. Stroboscopic glasses may help elicit sensory reweighting during postural control. Therefore, we assumed that the glasses would induce and train CAI patients to reweight sensory information for the somatosensory system during dynamic balance training. Purpose: (1) to identify the effects of the 4-week dy
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44

Eksi, Murat. "Optimization Of Mechanical And Microstructural Properties Of Weld Joints Between Aluminium-magnesium And Aluminium-magnesium-silicon Alloys With Different Thicknesses." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615649/index.pdf.

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For the last decades usage of aluminium alloys have been increasing tremendously. They have been used in aerospace industry widely and now aluminium alloys are becoming more and more popular in automotive and defense industries. Consequently<br>successful welding of aluminium alloys gains importance. In this study a research is carried out on eldability of plates having different thicknesses of composition 5754 aluminium and 6063 aluminium in T-fillet geometry using Gas-metal Arc Welding technique. It was aimed to have a successful joint without using pre-weld and post-weld heat treatments. Du
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45

Baratzadeh, Farzad. "Friction stir weld development and dynamic crash testing of bumper-beam / crash-box assemblies made from AA66082-T6 and AA6063-T6 extrusions." Diss., Wichita State University, 2013. http://hdl.handle.net/10057/10607.

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Advancements in friction stir welding (FSW) have enabled the development and testing of a lightweight automotive bumper-beam/crash-box assembly. Previously, a test fixture to dynamically (crash) test the functionality of advanced bumper assemblies fabricated by FSW was developed. This FSW development work included microstructural examination and static mechanical testing. Results from coupon-level development were compared against results from component-level testing of prototype articles using micrographs and an advanced electronic (signal/frequency analysis) non-destructive evaluation (e-NDE
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46

Schaefer, Jessica L. "The effects of a randomized four-week Graston Instrumented-Assisted Soft Tissue Mobilization (GISTM) dynamic balancing-training program on individuals with chronic ankle instability." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10217.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains viii, 143 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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47

Monquero, Patrícia Andréa. "Dinâmica populacional e mecanismos de tolerância de espécies de plantas daninhas ao herbicida Glyphosate." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-26112003-152341/.

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Aplicações repetitivas do herbicida glyphosate podem resultar em mudanças nas populações de plantas daninhas, devido a uma pressão seleção sobre espécies de plantas daninhas tolerantes ao herbicida. No entanto, os mecanismos de tolerância dessas espécies não estão completamente compreendidos, e a elucidação desses mecanismos é fundamental nas recomendações de estratégias para o manejo de plantas daninhas tolerantes ao glyphosate. Sendo assim, os objetivos desta pesquisa foram: (i) avaliar a dinâmica do banco de sementes das espécies de plantas daninhas Commelina benghalensis L., Ipomoe
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48

Leavey, Vincent J. "The comparative effects of a six-week balance training program, gluteus medius strength training program, and combined balance training/gluteus medius strength training program on dynamic postural control." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4594.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains viii, 107 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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49

Ugarte, Nano Claudia Carolina. "Etude de la variabilité des propriétés physiques et hydrodynamiques d'un sol argileux sous l'effet de conduites en protection intégrée contre les adventices." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS003/document.

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Les systèmes de culture en Protection Intégrée de Cultures contre les adventices (systèmes PIC-adventices) sont d’un grand intérêt pour réduire significativement l’utilisation des herbicides en les substituant par une combinaison complexe de différentes techniques culturales. L’objectif principal de notre travail a été de contribuer au volet environnemental de l’évaluation multicritère des systèmes PIC-adventices mis en place depuis 2000 sur le domaine expérimental de l’INRA à Bretenière (21). La variabilité des propriétés physiques et hydrodynamiques qui interviennent dans le transfert de l’e
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50

Sen, Debamoy. "Coupled Field Modeling of Gas Tungsten Arc Welding." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/38820.

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Welding is used extensively in aerospace, automotive, chemical, manufacturing, electronic and power-generation industries. Thermally-induced residual stresses due to welding can significantly impair the performance and reliability of welded structures. Numerical simulation of weld pool dynamics is important as experimental measurements of velocities and temperature profiles are difficult due to the small size of the weld pool and the presence of the arc. From a structural integrity perspective of welded structures, it is necessary to have an accurate spatial and temporal thermal distribution i
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