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Thematische Bibliographien / Hydroponic greenhouse / Dissertationen

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Dissertationen zum Thema „Hydroponic greenhouse“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 28. Mai 2022

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1

Håkansson, David, and Anna Lund. "Hydroponic Greenhouse: Autonomous identification of a plant s growth cycle." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264458.

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In a world with an ever growing population, the ability to grow food eciently is essential. One way to improve the eciency is by automation. The purpose of this project is therefore to investigate how the identification of a plant’s stage in its growth cycle that can be made autonomous. This was done with the method of measuring the amount of green pixels in an image of the plant. To be able to answer our research questions a demonstrator was built. The demonstrator is a greenhouse with a non regulated aeroponic system, a regulation system for humidity and an identification system for determin

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Nelkin, Jennifer B. "Development of Cultural Practices and Environmental Control Strategies for the Production of Basil (Ocimum basilicum L.) in a Semi-Arid Climate." Thesis, Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1056%5F1%5Fm.pdf&type=application/pdf.

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Johnsson, Emma, and Virginia Cheung. "Vertikalt växthus i Kiruna : Med spillvärme från LKABs gruvindustri." Thesis, KTH, Byggteknik och design, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-126096.

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Städerna växer och samtidigt ökar efterfrågan på närodlade och ekologiska grödor. För att klara av att producera närodlat och mer hållbart skulle ett alternativ vara att odla i så kallade vertikala växthus. I Kiruna finns Sveriges största malmgruva som drivs av företaget LKAB vars olika processer leder till spillvärme. I Kiruna är klimatet kallt jämfört med större delen av Sverige och därför erfordras uppvärmning om odling ska kunna ske året runt i ett växthus. Examensarbetets uppgift är därför att undersöka hur man kan utnyttja spillvärme till ett vertikalt växthus i samband med en ny kontors

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Zhang, Xuemei. "Ecology and Management of Pythium species in Float Greenhouse Tobacco Transplant Production." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/101779.

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Pythium diseases are common in the greenhouse production of tobacco transplants and can cause up to 70% seedling loss in hydroponic (float-bed) greenhouses. However, the symptoms and consequences of Pythium diseases are often variable among these greenhouses. A tobacco transplant greenhouse survey was conducted in 2017 in order to investigate the sources of this variability, especially the composition and distribution of Pythium communities within greenhouses. The survey revealed twelve Pythium species. Approximately 80% of the surveyed greenhouses harbored Pythium in at least one of four site

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Korssell, Caroline, and Emelie Rudert. "Implementering av hydroponisk odling i en livsmedelsbutik : En fallstudie av en aktör inom Stockholmsområdet." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297542.

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Denna rapport behandlar en fallstudie i ett kandidatexamensarbete som utförts tillsammans med en livsmedelsbutik i Stockholmsområdet och som grundar sig i intervjuer, platsbesök och vetenskapliga artiklar. Där livsmedelsbutiken har ett intresse av att implementera en odling i form av ett hydroponiskt system direkt i sin butik. I fallstudien har det undersökts hur implementering av odling i butik genom ett samarbete med ett odlingsföretag skulle fungera och se ut för butiken. Studien har begränsats till två olika odlingsföretag i Sverige, som har varsitt koncept på hur odlingen kan

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Flôres, Migacir Trindade Duarte. "Efeito da densidade de semeadura e da idade de colheita na produtividade e na composição bromatológica de milho (Zea mays L.)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-10112009-103027/.

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O presente trabalho é um estudo da utilização da forragem hidropônica como opção para alimentação de ruminantes em épocas do ano em que há escassez de alimentos volumosos. O experimento foi realizado em ambiente protegido, no Instituto Federal do Rio Grande do Sul, em Sertão, Brasil, no ano de 2009, com o objetivo de avaliar o efeito da densidade de semeadura e da idade de colheita na produtividade e na composição bromatológica de milho produzido em substrato de feno de aveia. Adotou-se o delineamento experimental inteiramente casualizado, com quatro repetições, utilizando parcelas de 1,0 m2 (

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Шевченко, І. М. "Оздоровлення сортів картоплі за використання біотехнологічних методів". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25194.

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Шевченко, І. М. Оздоровлення сортів картоплі за використання біотехнологічних методів : випускна кваліфікаційна робота : 201 «Агрономія» / І. М. Шевченко ; керівник роботи О. Ю. Локоть ; НУ "Чернігівська політехніка", кафедра аграрних технологій та лісового господарства . – Чернігів, 2021. – 70 с.<br>Об’єктом досліджень є процеси оздоровлення картоплі від вірусної інфекції та прискореного розмноження безвірусного матеріалу в умовах гідропонної теплиці. Предметом дослідження є використання біотехнологічних методів в технології оздоровлення картоплі від вірусних хвороб. На сьогодні відомо про

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Lundin, Karl, and Oscar Olli. "Automated hydroponics greenhouse : Regulation of pH and nutrients." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226662.

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The purpose of this project is to create a fully automatedgreenhouse that can produce year-round crops, using sensorsand actuators. Temperature in both water and air,relative humidity, water level, nutrient level and pH are allmeasured with different sensors. Though only water level,pH and nutrients will be regulated. The greenhouse will berelying on a hydroponic growing technique, meaning thatthe growing is soil-less and will be done in water. Thismakes measuring and controlling said levels easier and alsominimizes water waste and makes for a more environmentalsystem. The main focus of this p

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Littlefield, Joanne. "Controlled Environment Agriculture: Greenhouses Feature High-Tech Hydroponics." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/622255.

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Licamele, Jason David. "Biomass Production and Nutrient Dynamics in an Aquaponics System." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/193835.

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The goal of this study was to prove that aquaponic systems can produce lettuce of equal growth and quality compared to hydroponic lettuce production and to determine the stocking density of fish required for plant growth. Aquaponics is the integration of recirculating aquaculture and hydroponic plant production. The project had four objectives. The first objective was to determine the biomass of fish required for plant growth to develop a fish to plant density ratio. The second objective was to compare lettuce grown with aquaponic water and a hydroponic solution under the same environmental co

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De, Villiers Johannes Jacobus. "The influence of different production systems, planting densities and levels of shading on the yield, quality and growth potential of 'Chandler' strawberry plants (Fragaria ananassa) grown in coir /." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019.1/2624.

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Tran, Stephan, and Robert Alexandersson. "Small-scale biogas and greenhouse system." Thesis, KTH, Industriell ekologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210631.

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Greenhouse cultivation is a growing industry, especially in mild climates, much due to the ability toadjust the growing conditions and increased water utilization efficiency. The most important aspect onthe cultivation is the indoor temperature. The variation in temperature is due to the Swedish climatewhere the highest and lowest outdoor temperature respectively varies greatly during the year. To enableoptimal indoor climate additional heating is required during colder periods. Presently, most of theexisting greenhouses utilizes combustion of fossil fuels for heating, which contributes to the

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13

Curlango-Rivera, Gilberto. "Function of Root Border Cells and their Exudates on Plant Defense in Hydroponic Systems." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202535.

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Controlled environment agriculture offers a solution to challenges including less available land, water deficits, and consumer demand for pesticide free produce. However, control of soil-borne diseases is a major limiting factor. The goal of this dissertation was to examine predictions of the hypothesis that border cells function to protect plant health by controlling microorganisms associated with plants grown in hydroponic culture. Border cells separate from root tips upon immersion in water, and appear to have important roles in the defense mechanisms of plant roots. The general objectives

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Haghighi, Maryam, Atena Sheibanirad, and Mohammad Pessarakli. "Effects Of Selenium as a Beneficial Element on Growth and Photosynthetic Attributes of Greenhouse Cucumber." Taylor & Francis, 2015. http://hdl.handle.net/10150/615120.

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Selenium (Se) is an essential element for human and livestock with antioxidant and anticancer characteristics. Although Se is not an essential element for plants, it has been reported that it can improve plant growth. This experiment was conducted at the Isfahan University of Technology in winter 2010. The experiment was factorial based on a completely randomized design (CRD) with 4 replications. Se was added to nutrient solution in 4 concentrations 2, 4, and 6 mg/l sodium selenite (Na2SeO3). Root volume, fresh and dry weights of shoots and roots, number and weight of fruits, chlorophyll conte

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Miranda, Trujillo Luis Carlos. "Artificial Neural Networks in Greenhouse Modelling." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19354.

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Moderne Präzisionsgartenbaulicheproduktion schließt hoch technifizierte Gewächshäuser, deren Einsatz in großem Maße von der Qualität der Sensorik- und Regelungstechnik abhängt, mit ein. Zu den Regelungsstrategien gehören unter anderem Methoden der Künstlichen Intelligenz, wie z.B. Künstliche Neuronale Netze (KNN, aus dem Englischen). Die vorliegende Arbeit befasst sich mit der Eignung KNN-basierter Modelle als Bauelemente von Klimaregelungstrategien in Gewächshäusern. Es werden zwei Modelle vorgestellt: Ein Modell zur kurzzeitigen Voraussage des Gewächshausklimas (Lufttemperatur und relative

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Medeiros, Liziany Müller. "Produção e composição bromatologica da forragem hidropônica de trigo." Universidade Federal de Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/4965.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Hydroponics forage is an alternative to producers who need quality food to their animals, at times of the year with low demand. It was carried out two experiments inside a polyethylene greenhouse (tunnel), in the Ecophysiology and Hydroponic Research Center (NUPECH), of the Federal University of Santa Maria, Brazil. The objective this work was to evaluate the production and bromatological nutrition in hidropoinc wheat forage. The experimental design was randomized complete block in a 2x4 factorial scheme, consisted of two nutrient

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Furtner, Bernhard. "Abiotic and biotic factors in the nutrient solution and filter skin (Schmutzdecke) of slow filters integrated to closed hydoponic greenhouse : potential predictors for assessment of efficacy /." Alnarp : Department of Crop Science, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/10232320.pdf.

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18

Sales, Francisco Alexandre de Lima. "Microclima na produÃÃo de alface hidropÃnica em ambiente protegido utilizando telas de sombreamento como subcobertura." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7969.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>A adequaÃÃo do microclima das estufas Ãs necessidades das culturas tornou-se um fator de suma importÃncia para o bom desenvolvimento das culturas no cultivo protegido, sendo que em determinados horÃrios as temperaturas internas se elevam podendo reduzir a fotossÃntese. Para isso, podem ser utilizadas tecnologias alternativas que adequem as temperaturas as necessidades das culturas, tais como o uso de telas de sombreamento, principalmente para a reduÃÃo da temperatura nos perÃodos mais quentes do dia. Sendo assim, o objetivo deste

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Jung, M. C. Victoria. "The role of selected plant and microbial metabolites in the nutrient solution of closed growing systems in greenhouses /." Alnarp : Swedish University of Agricultural Sciences, 2003. http://diss-epsilon.slu.se/archive/00000343/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2003.<br>Appendix consists of reprints and manuscripts of five papers co-authored with others. Includes bibliographical references. Also partially available online in PDF format; online version lacks appendix.

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Sales, Francisco Alexandre de Lima. "Microclima na produção de alface hidropônica em ambiente protegido utilizando telas de sombreamento como subcobertura." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/18598.

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SALES, Francisco Alexandre de Lima. Microclima na produção de alface hidropônica em ambiente protegido utilizando telas de sombreamento como subcobertura. 2012. 96 f. Dissertação (Mestrado em engenharia agrícola)- Universidade Federal do Ceará, Fortaleza-CE, 2012.<br>Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-06-21T19:50:34Z No. of bitstreams: 1 2012_dis_falsales.pdf: 1966477 bytes, checksum: c3c95147261d4aba1b9c5326c3aae021 (MD5)<br>Approved for entry into archive by José Jairo Viana de Sousa (jairo@ufc.br) on 2016-07-21T20:14:01Z (GMT) No. of bitstreams: 1 2012_dis_falsa

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(8085998), Alexander G. Miller. "Optimization of Greenhouse Hydroponic Lettuce Production." Thesis, 2019.

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<p>As the world population continues to grow, it will be challenging to manage resources, reduce environmental pollution and maintain growing demand for food production. Controlled environment agriculture (CEA) is a novel solution to reduce freshwater use in agriculture, minimize environmental pollution from agriculture sector, and meet the growing food demand. CEA allows for the year-round cultivation in inhospitable climatic conditions. Hydroponics is a common method of growing crops in CEA, where plants grow in a solution enriched with nutrients and oxygen. The technique significantly reduc

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Wada, Yoshihiko. "The appropriated carrying capacity of tomato production : comparing the ecological footprints of hydroponic greenhouse and mechanized field operations." Thesis, 1993. http://hdl.handle.net/2429/1526.

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Agribusiness advocates claim that modern agro-technology has led to higher per hectare yields. In particular, hydroponic greenhouse agriculture is advanced as a new and particularly productive approach to high output farming. This may contribute to the belief that agricultural land can be urbanized because human ingenuity is seemingly developing substitutes for the lost soil. This thesis challenges this assumption by examining agricultural technology from an ecological perspective. It uses the concept of the ecological footprint (or appropriated carrying capacity) to compare the productivity o

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Struwig, Dewald De Villiers. "Stitch_ an architecture of connection." Diss., 2009. http://hdl.handle.net/2263/30268.

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The chosen project originated as a response to humanity’s need to eat, and the agricultural processes necessary to feed the global population. The proposed solution will investigate the connection of physically and meta-physically dissociated elements, in order to create responsive architecture. The aim is to steer away from a mono-functional building and design typologies and to strive towards creating architecture that will address the needs of the public. The chosen project investigates future and current solutions for the production of food in urban environments. The scales of investigatio

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