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Tesi sul tema "Radiation use efficiency"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Chuong, Nguyen Duc Xuan. "Identification of radiation use efficiency traits in a wheat and spelt population." Thesis, University of Nottingham, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.662207.

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Wheat is one of the main staple food crops, providing an essential source of carbohydrates for millions of people. Therefore, demand for wheat will increase in next few decades as the global population increases toward a prediction 9 billion by 2050. Further advances in wheat yield requires the integration of new tools and strategies to complement traditional approaches to select genotypes that are better suited to abiotic stress, in the context of climate change. Identifying morphological and physiological characters, correlated with tolerance to environmental stress, is a priority for wheat

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2

Dempster, Steven M. "The physiological basis of genetic variation in radiation-use efficiency and biomass in wheat." Thesis, University of Nottingham, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.756110.

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Wheat (Triticum aestivum L.) has been the crop with the second-highest global production for most of the past decade, and is the most extensive and productive crop in the UK (FAOSTAT database) 2009}. Wheat grain is the most traded food product in the world} and the major import in developing countries (Dixon et al., 2009). During the 1960's and 1970's the majority of improvement in yield in . wheat came about through selection for raised harvest index (the proportion of above-ground dry matter in grains at harvest; HI). However} since the 1980}s genetic gains in yield potential among winter wh

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3

Garbulsky, Martín Fabio. "On the remote sensing of the radiation use efficiency and the gross primary productivity of terrestrial vegetation." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/3713.

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La captación de carbono por la vegetación es a escala global el flujo más grande de CO2 e influencia en gran medida el funcionamiento de los ecosistemas. Sin embargo, su variabilidad temporal y espacial sigue siendo poco conocida y difícil de estimar. Las técnicas de teledetección pueden ayudar a calcular mejor la producción primaria bruta (GPP) terrestre, que es la expresión a nivel de ecosistemas del proceso de la fotosíntesis. El objetivo principal de esta tesis fue encontrar una manera de estimar la variabilidad espacial y temporal de la eficiencia en el uso de la radiación (RUE) a escala

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4

Narayanan, Sruthi. "Canopy architecture and water productivity in sorghum." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/8760.

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Master of Science<br>Department of Agronomy<br>Robert M. Aiken<br>Increasing crop water use efficiency (WUE), the amount of biomass produced per unit water consumed, can enhance crop productivity and yield potential. The objective of the first study was to evaluate the factors affecting water productivity among eight sorghum (Sorghum bicolor (L.) Moench) genotypes, which differ in canopy architecture. Sorghum genotypes, grown under field conditions, showed significant differences in (a) biomass production, (b) water use, (c) intercepted radiation, (d) water productivity and (e) radiation use e

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5

Barker, Sheila. "Growth, yield and radiation use efficiency in intercrops of wheat (Triticum aestivum L.) and field beans (Vicia faba L.)." Thesis, University of Reading, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558729.

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Spring-sown intercrops of wheat (Triticum aestivum L.) and field beans (Vicia faba L.) were grown on a sandy loam soil at University of Reading, UK. Wheat cultivar Axona, and bean cultivars, Scirocco and Maris Bead were grown as sole crops and additive intercrops at 50%, 75% and 100% recommended density (RD). In experiment 1 (1999), sown in March, LER for seed yield ranged from 1.12 to 1.18 at 75% RD with partial LER of 0.55 for beans and 0.63 for wheat. LER in experiments 2 and 3 ranged from 1.02 to 1.18 (2000) and from 0.84 to 1.22 (2001). Experiments 2 and 3 were May sown and beans performe

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6

Noronha, Sannervik Angela. "Modelling productivity of willow stands in Sweden : evaluation of concepts for radiation use efficiency and soil water and nitrogen availability /." Uppsala : Dept. of Short Rotation Forestry, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s286-ab.html.

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7

Karlberg, Louise. "Irrigation with saline water using low-cost drip-irrigation systems in sub-Saharan Africa." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209.

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8

Assunção, Idelina Cabral de Assis [UNESP]. "Avaliação da eficiência do amendoim (Arachis hypogaea L.) na utilização da radiação fotossinteticamente ativa para produção de matéria seca." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/90595.

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Made available in DSpace on 2014-06-11T19:24:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-02-01Bitstream added on 2014-06-13T18:52:30Z : No. of bitstreams: 1 assuncao_ica_me_botfca.pdf: 943075 bytes, checksum: ce539ad58264cbbab2e1e863aae2d636 (MD5)<br>Universidade Estadual Paulista (UNESP)<br>Um ensaio, com amendoim (Arachis hypogaea L.), cv. IAC-TATUST, foi conduzido, na área experimental do Setor de Ciências Ambientais (21,85° S; 48,43° W; 786 m), FCA/UNESP, em Botucatu, SP, em parcela única sob tratamento úmido durante o período de 11/02/2001 a 06/06/2001. Durante todas as fa

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9

Monje, Oscar A. "Effects of Elevated CO2 on Crop Growth Rates, Radiation Absorption, Canopy Quantum Yield, Canopy Carbon Use Efficiency, and Root Respiration of Wheat." DigitalCommons@USU, 1993. https://digitalcommons.usu.edu/etd/6763.

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Wheat canopies were grown at either 330 or 1200 μmol mol-1 CO2 in sealed controlled environments, where carbon fluxes and radiation interception were continuously and nondestructively measured during their life cycles. The effects of elevated CO2 on daily growth rates, canopy quantum yield, canopy and root carbon use efficiencies, and final dry mass were calculated from carbon flux measurements in an open gas exchange system. Dry biomass at harvest was predicted from the gas exchange data to within ± 8%. The greatest effect of elevated CO2 occurred in the first 15d after emergence; however, se

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10

Kennedy, Shane. "Identifying constraints to increasing yield potential of spring barley." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/16177.

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The literature suggests that grain number largely determines and as such limits yield in barley. Many of the reported studies were conducted in relatively low yielding environments and it is unclear if grain number is also a limiting factor in high yield potential climates. Nor is it known with certainty what physiological or morphological traits must be targeted in order to increase grain number. There may be a degree of trade-off between yield components whereby grain number is adjusted according to resource availability to the plant, either pre- or post-anthesis, in a way that ensures consi

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11

Assunção, Idelina Cabral de Assis 1961. "Avaliação da eficiência do amendoim (Arachis hypogaea L.) na utilização da radiação fotossinteticamente ativa para produção de matéria seca /." Botucatu : [s.n.], 2005. http://hdl.handle.net/11449/90595.

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Orientador: Dinival Martins<br>Banca: Raimundo Leite Cruz<br>Banca: Emerson Galvani<br>Resumo: Um ensaio, com amendoim (Arachis hypogaea L.), cv. IAC-TATUST, foi conduzido, na área experimental do Setor de Ciências Ambientais (21,85° S; 48,43° W; 786 m), FCA/UNESP, em Botucatu, SP, em parcela única sob "tratamento úmido" durante o período de 11/02/2001 a 06/06/2001. Durante todas as fases de crescimento das plantas foram monitoradas as radiações fotossinteticamente ativa incidente, refletida e transmitida, bem como a produção semanal da biomassa acumulada e sua energia química, incluindo raíze

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12

Perez, Denise. "Light-Use Efficiency of Coral-Reef Communities: A Sensitivity Analysis Using an Optically Based Model of Reef Productivity and Calcification." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/99.

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Biogeochemical processes of reefs have been studied for over fifty years, however, information is still lacking on several fundamental reef processes. This lack of information has been limited essentially by techniques that cannot repeatedly sample large spatial areas. These limitations can be reduced with the use of an optical model to estimate biogeochemical processes. This project applied Monteith's light-use efficiency model to coral reef communities for determining photosynthetic and calcification efficiency of light. Gross primary production and net calcification were pooled from the pee

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13

Medeiros, Rui Palmeira. "Componentes do balanço de água e de radiação solar no desenvolvimento do milho em quatro épocas de semeadura no agreste de Alagoas." Universidade Federal de Alagoas, 2009. http://repositorio.ufal.br/handle/riufal/238.

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Fatores ambientais são determinantes nos processos fisiológicos das plantas de milho, no acúmulo de matéria seca e no rendimento da cultura. O objetivo desse trabalho foi avaliar as interações entre as variáveis ambientais com o crescimento, desenvolvimento e produtividade do milho (Zea mays L.) em quatro épocas de semeaduras, com destaque para a eficiência no uso da radiação e da água. Para tanto, um experimento de campo foi conduzido na região de Arapiraca, (09º48 55,1 S, 36º36 22,8 W e altitude de 236 m), Alagoas Brasil. O experimento foi conduzido, durante a estação chuvosa, de maio a ou

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14

Borges, Bernardo Melo Montes Nogueira [UNESP]. "Efficiency of nitrogen sources and rates on growth and dry matter yield of tifton 85." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/138169.

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Submitted by Bernardo Melo Montes Nogueira Borges null (bernardonog@hotmail.com) on 2016-04-27T20:07:00Z No. of bitstreams: 1 Tese_Bernardo_Melo_Montes_Nogueira_Borges.pdf: 1559546 bytes, checksum: 6d1bf6517586eaeee1a07a41f98d1490 (MD5)<br>Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-04-29T22:10:32Z (GMT) No. of bitstreams: 1 borges_bmmn_dr_jabo.pdf: 1559546 bytes, checksum: 6d1bf6517586eaeee1a07a41f98d1490 (MD5)<br>Made available in DSpace on 2016-04-29T22:10:32Z (GMT). No. of bitstreams: 1 borges_bmmn_dr_jabo.pdf: 1559546 bytes, checksum:

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15

Mills, Annamaria. "Understanding constraints to cocksfoot (Dactylis glomerata L.) based pasture production." Phd thesis, Lincoln University. Agriculture and Life Sciences Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070717.161658/.

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This research examined the mechanisms by which temperature, water availability and nitrogen (N) affect the dry matter (DM) yield potential of cocksfoot (Dactylis glomerata L.) dominant pastures. The experiment was a split plot design with main plots of fully irrigated (I) or dryland (D), sub-plots of N fertiliser at 800 kg N/ha in 2003/04; and 1600 kg N/ha in 2004/05 (+N) or 0 kg N/ha (-N). The potential environmental yield of an established 8 year old cocksfoot dominant pasture was 21.9 t DM/ha/y from I+N pastures compared with 9.8 t DM/ha by I-N pastures and 15.1 t DM/ha/y by D+N pastures.

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16

Zhao, Kun. "Interaction between the Radiation of LTE MIMO Antennas in a Mobile Handset and the User´s Body." Thesis, KTH, Elektroteknisk teori och konstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103426.

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Due to the great demand for high-speed wireless communication, Multi Input Multi Output (MIMO) antenna systems have been attracted rapidly increased attention. Therefore, the interaction between human body and MIMO antenna becomes an important issue, which will be studied in the present thesis. This thesis mainly focuses on the specific absorption rate (SAR) of the LTE MIMO antenna in mobile phone. It is different from the SISO antenna, and as the MIMO antenna has more operation modes and functions (MIMO, SISO, beam forming, etc.), more parameters need to be investigated for the SAR of the ant

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17

Borges, Bernardo Melo Montes Nogueira. "Efficiency of nitrogen sources and rates on growth and dry matter yield of tifton 85 /." Jaboticabal, 2016. http://hdl.handle.net/11449/138169.

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Orientador: Edson Luiz Mendes Coutinho Coutinho<br>Coorientador: Takashi Muraoka<br>Banca: Henrique Coutinho Junqueira Franco<br>Banca: Valdeci Orioli Júnior<br>Banca: José Eduardo Corá<br>Banca: Carolina Fernandes<br>Resumo: Forrageiras do gênero Cynodon são conhecidas por sua capacidade de resposta a altas doses de nitrogênio (N). Em condições tropicais o N pode se tornar um problema ambiental e financeiro devido à sua baixa eficiência de uso pelas plantas, principalmente como resultado de perdas por volatilização e/ou lixiviação. Portanto, objetivou-se com este trabalho avaliar fontes e dos

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18

Chakwizira, Emmanuel. "Growth and development of 'Pasja' and kale crops grown with two methods and four rates of phosphorus (P) application : a thesis submitted in partial fulfilment of the requirements for the degree of Masters [i.e. Master] of Agricultural Science at Lincoln University /." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/929.

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*‘Pasja’ (Brassica campestris x napus) and kale (Brassica oleracea var. acephala L.) were grown at Lincoln, Canterbury, New Zealand in 2008 with different levels of phosphorus (P) fertiliser. Banded or broadcast P fertiliser was applied at 0, 20, 40 and 60 kg P/ha at establishment. Total dry matter (DM) production, the proportion of the leaf and stem and leaf area development were measured over time and related to the biophysical environment. For ‘Pasja’, final DM increased with P rate from 3730 kg DM/ha to ~4900 kg DM/ha at 60 kg P/ha. For kale the increase was from 8710 kg DM/ha for the cont

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19

Varella, Alexandre Costa. "Modelling lucerne (Medicago sativa L.) crop response to light regimes in an agroforestry system." Lincoln University, 2002. http://hdl.handle.net/10182/1477.

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The general goal of this research was to understand the agronomic and physiological changes of a lucerne crop in distinct physical radiation environments and to verify the potential of lucerne to grow under shaded conditions. To achieve this, the research was conducted in four main steps: (i) firstly, experimental data collection in the field using two artificial shade materials (shade cloth and wooden slats) under inigated and non-irrigated conditions; (ii) a second experiment with data collection in a typical temperate dryland agroforestry area under non-irrigated conditions; (iii) generatio

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20

Costa, Luís de Sousa. "Modificação das caracteristicas agrometeorológicas do sorgo pela adubação azotada." Doctoral thesis, 2008. http://hdl.handle.net/10400.5/1876.

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21

Pangle, Luke A. "A comparison of radiation use efficiency between two southern Appalachian watersheds." 2006. http://purl.galileo.usg.edu/uga%5Fetd/pangle%5Fluke%5Fa%5F200612%5Fms.

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22

Lo, Jeng-Chung, and 羅正宗. "Solar radiation use efficiency and its discriminant functions of the rice varieties released un Taiwan." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/36574318188398501383.

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博士<br>國立中興大學<br>農藝學系<br>90<br>Solar Radiation Use Efficiency and Its Discriminant Functions of the Rice Varieties Resealed in Taiwan Abstract This study aimed to explore a set of canonical discriminant functions, i.e., linear combinations of certain quantitative traits, that best reveal the difference of solar radiation use efficiency of grain yield (RUEy) among rice varieties. A total of 25 varieties randomly selected from the collection of rice varieties released in Taiwan during the past 60 years were used to conducted field experiments with various nitrogen rates

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23

Gramig, Greta G. "Radiation-use efficiency of grass and broad-leaved weed species as affected by early-season competitive environment." 2004. http://catalog.hathitrust.org/api/volumes/oclc/58481740.html.

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24

Costa, Luís de Sousa. "Modificação das características agrometeorológicas do sorgo pela adubação azotada." Doctoral thesis, 2009. http://hdl.handle.net/10198/1197.

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O presente estudo pretende contribuir para a avaliação da influência de diferentes níveis de adubação azotada nas características agrometeorológicas de desenvolvimento e crescimento do sorgo forrageiro de regadio, nas condições edafo-climáticas do Nordeste Transmontano. Analisou-se o efeito de quatro níveis de azoto no solo na forma como o crescimento e desenvolvimento do sorgo respondem à temperatura e à radiação solar, nomeadamente em termos de crescimento em altura, evolução do número de folhas, índice de área foliar, produção de biomassa, e extracção de azoto. Esta avaliação é feita

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25

(7371827), Miguel A. Lopez. "Developing the Yield Equation for Plant Breeding Purposes in Soybean (Glycine max L. Merr)." Thesis, 2019.

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<p>Dissecting the soybean grain yield (GY) to approach it as a sum of its associated processes seems a viable approach to explore this trait considering its complex multigenic nature. Monteith (1972, 1977) first defined potential yield as the result of three physiological efficiencies: light interception (Ei), radiation use efficiency (RUE) and harvest index (HI). Though this rationality is not recent, few works assessing these three efficiencies as strategies to improve crops have been carried out. This thesis approaches yield from the perspective of Ei, RUE, and HI to better understand yield

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HSU, SHU-JUNG, and 許書榮. "Use Surface-attached type diode capable of improving radiating capability toenhance power efficiency." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/de3wpp.

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碩士<br>中原大學<br>電機工程研究所<br>102<br>This paper describes how to enhanced radiating capability of Surface-attached type diode to improve power efficiency, due to the development of electronic components integrated circuit technology, like resistors, capacitors, diodes and transistors…etc, have been reduced their weights and body conspicuously. In particular, surface-attached type diode can save more spaces in PCB circuit layout than DIP diodes. In this paper, we compared surface-attached type diode with traditional package, and found the surface-attached type diode package structure can improve pow

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27

Zhu, Shaozhen (Sharon), Tahereh S. Ghazaany, Raed A. Abd-Alhameed, et al. "Improved bandwidth low-profile miniaturized multi-arm logarithmic spiral antenna." 2014. http://hdl.handle.net/10454/10834.

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