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Autor: Grafiati

Data publikacji: 26 lipca 2024

Data aktualizacji: 31 lipca 2025

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1

Knight, Amelia Cassidy Terhune Jeffery S. "General fish health assessment and age evaluation of impinged fish at steam generating power plants." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/FALL/Fisheries_and_Allied_Aquacultures/Thesis/Knight_Amelia_50.pdf.

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Guiny, Eliane M. "Hydraulic and biological aspects of fish passes for dams." Thesis, University of Glasgow, 2001. http://theses.gla.ac.uk/1565/.

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The primary purpose of the dissertation is to quantify the efficiency and operation of various types of fish passes for dams. This is achieved through a novel experiment of testing juvenile salmon in a scale model fish-passes with a range of small structures including vertical slots, orifices, weirs and combinations of all three. Direct comparisons of the efficiency of each type of fish pass in terms of upstream migration. Two identical physical models were constructed, one at the Fisheries Research Services Freshwater Laboratory at Almondbank, Perth, Scotland where observations were made of f

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3

Verghese, Bindhu. "Electrophoretic patterns of the general proteins of four species belonging to the Family Carangidae." Thesis, Central Marine Fisheries Research Institute, 1998. http://eprints.cmfri.org.in/11038/1/Bindhu%20Varghese.pdf.

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Muscle proteins usually provide useful information and therefore are frequently used as valuable diagnostic characters in the classification of fishes at species, generic, familial and higher taxonomic levels. The muscle myogen of four species of carangids. viz, Decapterus russelli, D. macrosoma, Selar crumenophthalmus and Megalaspis cordyla using horizontal slab polyacrylamide gel electrophoresis (Gel conc. 7.5%) is reported in the present communication. The number of protein fractions and the presumptive loci in muscle of D. russelli, D. macrosoma, S. crumenophthalmus and M. cordyla were f

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4

Smith, Eric S. "Refinement of the neutron-alpha and proton-alpha fish-bone potential." Thesis, California State University, Long Beach, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1523064.

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<p> The non-local fish-bone potential simulates the Pauli-exclusion principle for composite particle interactions. This model is used to calculate the phase shifts of the neutron-alpha and proton-alpha systems. We propose a local double Gaussian potential with a new parameterization by fitting to experimental results. These parameters are universal to both nucleon-alpha systems and include all partial waves, which is an improvement over previous work in the field.</p>

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5

Babineau, David. "Modeling the electric field and natural environment of weakly electric fish." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27222.

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Weakly electric fish use a unique sensory modality in order to help them communicate, navigate and find prey. These fish emit electric discharges that are monitored by electroreceptors located in the fish's skin. Surrounding objects perturb these baseline transdermal potentials and create electric images. The study of these images has led to a better understanding of general sensory processing principles; however, many aspects of these fish's natural electrosensory environment remain unknown. To this end, a two-dimensional finite element model of Apteronotus leptorhynchus was created. Using t

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6

Larson, Erik. "Serotonin modulates electrosensory processing via 5-HT2 receptors in the weakly electric fish «Apteronotus leptorhynchus»." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123302.

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Accurate sensory processing of the environment is a critical function for any organism to survive. In order to accomplish this function neurons must be specifically tuned to respond optimally to relevant stimuli in their environment. One effective way of efficiently encoding information is for neurons to adapt their responses to stimuli arising from different behavioral contexts. Neuromodulators such as serotonin (5-HT) are thought to help mediate such adaptations. The 5-HT system has been well conserved through evolution across vertebrates, suggesting that its function also been conserved

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7

Cazan, Alfy Morales. "Maternal transfer of metals in live-bearing fish (Cyprinodontiformes| Poeciliinae)." Thesis, University of Louisiana at Lafayette, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3622929.

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<p> This study assessed the occurrence and impacts of maternal metal transfer in live-bearing fish. The occurrence was investigated in two different species (<i>Gambusia affinis</i>and <i>Heterandria formosa</i>), while the impacts were studied only in <i>G. affinis.</i> Occurrence and impacts were addressed by exposing gravid females for 10 days to 0.15 μM of copper or cadmium, transferring the fish to clean water, monitoring their reproduction and collecting newborn offspring for further analyses of their health and reproductive success. </p><p> Maternal transfer of copper and cadmium

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8

Padhi, Abinash. "Electrophoretic Profile of the general proteins in the Green (Perna viridis Linnaeus) and the Brown (Perna indica Kuriakose & Nair) mussels." Thesis, Central Marine Fisheries Research Institute, 1998. http://eprints.cmfri.org.in/11022/1/Abinash%20Padhi.pdf.

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The electrophoretic profiles of the general proteins and the selected enzymes (MDH and EST) were examined in the green mussel, P. viridis and the brown mussel P. indica and their suspected hybrids from South India. The protein and the enzyme profiles were distinctly different in the two species. The protein profiles in different tissues of the green and brown mussels were found tissue and species specific. The two species are genetically different. The protein and the enzyme profiles in the brown and suspected ‘brown type’ hybrids were similar and that of the green and the suspected ‘gr

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9

Cuddy, Martin. "Modulations in electrocommunication behaviour and non-invasively measured 11-ketotestosterone during cue-induced seasonal breeding in the weakly electric fish, «Apteronotus leptorhynchus»." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96923.

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Androgens are correlated with reproductive behaviours including courtship and aggression. In the weakly electric fish, Apteronotus leptorhynchus, 11-ketotestosterone (11-KT) has been previously implicated in the regulation of electrocommunication behaviours that are believed to have roles in both aggression and courtship. In this thesis a method for performing repeated, non-invasive measurements of androgens released into the water was validated and applied for the first time in A. leptorhynchus. Changes in 11-KT levels and electrocommunication behaviour were observed in males following enviro

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10

Bacher, Kathrin. "Interactions between fish farming, wild fish populations, local fisheries and society: a case study in Catalonia, Spain." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/284844.

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The overarching goal of this doctoral thesis was to advance the understanding of the interactions between marine fish farming, wild fish populations, the local small-scale fishery and the society. This thesis was designed as a multi-disciplinary study and is divided into three different sections: ecology (chapter 1 and 2), fisheries (chapter 3) and social science (chapter 4). In the ecological part we examined the spatial and temporal extent of the attraction effect of wild fish at an Atlantic bluefin tuna and a Gilthead seabream farm. At both farms wild fish aggregated closely to the cage

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11

Chitheer, T. "Eco-evolutionary feedback in fish-zooplankton communities on the Scottish island of North Uist." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51741/.

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‘Eco-evolutionary feedbacks’ occur when evolution of organismal traits causes environmental change that drives further evolution. Predator and prey interactions provide good examples of eco-evolutionary feedbacks. Here I examine the potential for eco-evolutionary feedbacks between three-spined sticklebacks (Gasterosteus aculeatus, hereafter ‘stickleback’) and their zooplankton prey in lochs (lakes) on the Scottish island of North Uist. Many lochs on the island were colonised by sticklebacks after the last glaciation, approximately 10,000-15,000 years ago. Previous work has shown that stickleba

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12

Codina, Pascual Montserrat. "Estudi de la sinapsi i de la recombinació meiòtica en espermatòcits humans mitjançant immunocitofluorescència i stM-FISH." Doctoral thesis, Universitat Autònoma de Barcelona, 2006. http://hdl.handle.net/10803/3766.

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Durant la profase I meiòtica els cromosomes homòlegs s'uneixen mitjançant sinapsi formant els bivalents i intercanvien material genètic per recombinació homòloga. Al llarg de l'eix de sinapsi s'estructura el complex sinaptinemal (CS). Anomalies de la sinapsi i de la recombinació meiòtica s'han considerat com dos possibles causes de bloqueig total o parcial de la meiosi. L'objectiu general d'aquet treball és estudiar la incidència d'anomalies sinàptiques i de recombinació en individus controls i infèrtils per a caracteritzar diferents graus d'anomalies en aquests processos en la infertilitat id

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13

Yazgan, Tavsanoglu Ulku Nihan. "Zooplankton Adaptation Strategies Against Fish Predation In Turkish Shallow Lakes." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615354/index.pdf.

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In this study, the factors influencing zooplankton community structure in Turkish shallow lakes were elucidated with four main approaches: (i) space-for-time substitution for shallow lakes using snap-shot sampling in 31 lakes along a latitudinal gradient<br>(ii) in-situ mesocosm experiments in eleven lakes along a latitudinal gradient using three sets of artificial plants systems<br>(iii)&lsquo<br>Habitat Choice&rsquo<br>laboratory experiments mimicking a &lsquo<br>shallow littoral&rsquo<br>zone with plants and a &lsquo<br>deeper pelagic&rsquo<br>zone with sediments testing the response of Dap

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14

Konovalenko, Lena. "Element transport in aquatic ecosystems – Modelling general and element-specific mechanisms." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-110064.

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Radionuclides are widely used in energy production and medical, military and industrial applications. Thus, understanding the behaviour of radionuclides which have been or may be released into ecosystems is important for human and environmental risk assessment. Modelling of radionuclides or their stable element analogues is the only tool that can predict the consequences of accidental release. In this thesis, two dynamic stochastic compartment models for radionuclide/element transfer in a marine coastal ecosystem and a freshwater lake were developed and implemented (Paper I and III), in order

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15

Kepenek, Ayse Ozge. "Preliminary Approch For The Determination Of Fish Exuded Kairomone Using Fourier Transform Infrared Spectroscopy." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12606942/index.pdf.

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Chemical communication in aquatic organisms has been topic of a large number of studies focusing interactions between organisms via info chemicals. Diel Vertical Migration (DVM) is commonly observed among zooplankton and consists of a single daily ascent with minimum depth reached between sunset and sunrise and a descent with maximum depth attained during the day. DVM was absent or reduced when predators were absent and well developed in their presence. Species of the Daphnia are one of the well investigated group in freshwater environments. Variation in DVM of Daphnia in response to fish kair

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16

Lorenzi, Varenka. "The Behavioral Neuroendocrinology of Fish Sex Change: The Role of Steroids and Monoamines." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/biology_diss/76.

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Social status influences reproductive physiology in many species, and sex change in marine teleost fishes provides an excellent model to understand how an organism can modulate its reproductive system in response to social stimuli. The series of experiments presented in this dissertation has focused on the proximate mechanisms underlying sex change and, in particular, the neuroendocrine factors that might translate social information into physiological changes. The bluebanded goby (Lythrypnus dalli) is a sexually plastic fish, and the dominant female typically changes sex when the male is remo

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17

Ok, Meltem. "Evaluation Of The Demersal Fish Assemblages Of The Northeastern Levant Sea." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615068/index.pdf.

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Ecosystem-level changes have taken place in the Mediterranean Sea over the last decades due to both anthropogenic interferences and natural perturbations. Compared to the western Mediterranean Sea, influences of these factors especially on flora and fauna characteristics are much more dramatic and intense in the eastern part, particularly in the northeastern Levant Sea where the study area is located. In this study, life history traits of some core species (both native and immigrant) occupying the continental shelf of the northeastern Levant Sea were studied in this changing ecosystem to impro

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18

Murray, David S. "The role of physical structure and micronutrient provisioning in determining egg quality and performance in fish." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3563/.

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This thesis examined novel and previously utilised parameters of egg quality to determine and define reproductive success in farmed and wild salmonids. The effect of holding environment and inter-female variation on salmonid egg quality was also examined. Furthermore, two nutritional feed trials were undertaken to investigate whether organic Se, supplemented into salmonids broodstock diets, was vertically transferred to their eggs and what affect this dietary supplementation had on egg quality. Finally, the possibility that morphological and biochemical adaptations are present on the chorion o

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19

Ozen, Arda. "Role Of Hydrology, Nutrients And Fish Predation In Determining The Ecology Of A System Of Shallow Lakes." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607600/index.pdf.

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In this study, the hydrology and physical, chemical and biological variables of a shallow lake system including the Lakes Mogan and Eymir between 1997-2005 were evaluated. In Lake Eymir, a biomanipulation study was conducted between August, 1998 &ndash<br>December, 1999. Upon biomanipulation, Lake Eymir shifted to clearwater state with submerged vegetation domination during 2000-2003. However, in 2004, the lake shifted back to algae-dominated turbid state since the buffer mechanisms provided by submerged plants were absent. In the summer of 2005, fish kills were observed due to algal bloom.

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20

Baró, Llàcer Cristina. "Aplicació de la citogenètica, hibridació in situ fluorescent (FISH) i cariotipat espectral (SKY) per a la caracterització genètica dels limfomes de la zona marginal esplènica." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/368220.

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El limfoma de la zona marginal esplènica (LZME) és una entitat reconeguda per la Organització Mundial de la Salut (OMS) amb característiques clíniques, morfològiques i immunofenotípiques ben establertes. Els LZME en contrast amb altres síndromes limfoproliferatives B (SLP-B) no presenta una lesió gènica característica associada. Les alteracions cromosòmiques complexes són freqüents i es troben en un 80% dels casos, i la deleció de 7q i la trisomia 3 són les anomalies més recurrents i considerades típiques en els LZME. A part dels cromosomes 3 i 7, els estudis més recents han descrit com a crom

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21

Durban, Llenas Mercè. "Estudi citogenètic del primer corpuscle polar d'oòcits d'hàmster i d'humans: diagnòstic genètic preimplantacional mitjançant l'anàlisi de primer corpuscle polar." Doctoral thesis, Universitat Autònoma de Barcelona, 2008. http://hdl.handle.net/10803/3813.

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El primer corpúsculo polar (1CP) es una célula que acompaña al ovocito maduro (MII) y se produce como consecuencia de la primera división meiótica en la gametogénesis femenina. Ambas células tienen dotaciones cromosómicas complementarias y por ese motivo el 1CP puede informar indirectamente de la dotación cromosómica del correspondiente ovocito, sin que este pierda su capacidad reproductiva. Este hecho permite que en el marco de un programa de fecundación in vitro (FIV) se puedan biopsiar los 1CP y diagnosticar indirectamente los ovocitos, evitando la transferencia de embriones procedentes de

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22

Salido, Galeote Marta. "Caracterització genètica del limfoma esplènic de la zona marginal (LEZM)." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/129387.

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La tesi recull els resultats obtinguts de la caracterització genética del linfoma de la zona marginal esplènic (LZME). Està presentat en format de tesi per articles, i inclou, en aquest ordre, els apartats de: Introducció, Hipòtesi i Objectius, Resultats, Discussió, Conclusions, Bibliografia i Annexos. La introducció resum la limfomagènesi i l’origen del limfòcits B, i detalla la anatomia dels òrgans involucrats en aquest procés. A continuació es fa una introducció a les neoplàsies de cèl·lules B madura i s’explica la classificació actual dels limfomes detallant les alteracions citogenè

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23

Saraoglu, Ece. "Impact Of Water Level Fluctuations And Fish On Macroinvertebrate Community And Periphyton Growth In Shallow Lakes - A Mesocosm Approach." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614220/index.pdf.

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A mesocosm experiment was conducted in Lake Eymir between June &ndash<br>September 2009 in order to elucidate the effects of water level changes and fish predation on periphyton growth and macroinvertebrates in semi-arid shallow lakes. Twenty four cylindrical enclosures, each with 1.2 m diameter, open to lake bottom and atmosphere, were placed at three different depths, i.e. 0.8 m (low water level, LW), 1.6 m (high water level, HW) and 2.3 m (however, data regarding the enclosures at 2.3 m were excluded in this study due to complications after fifth sampling) to simulate water level fluctuati

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24

Lloveras, Caballé Elisabet. "Contribució de la citogenètica convencional i la hibridació in situ a l'estudi de les gammapaties monoclonals." Doctoral thesis, Universitat Autònoma de Barcelona, 2004. http://hdl.handle.net/10803/3662.

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El present treball de tesi es basa en l'estudi citogenètic de les gammapaties monoclonals. Les gammapaties monoclonals representen un grup de diverses patologies caracteritzades per un augment de la proliferació, maligne o no, d'un clon de cèl.lules plasmàtiques. <br/>S'han estudiat 53 pacients afectes de gammapatia monoclonal de significat incert (GMSI), 54 pacients amb mieloma múltiple (MM) i 7 pacients amb leucèmia de cèl.lules plasmàtiques. <br/>S'han aplicat les següents tècniques: la citogenètica convencional, el mètode MAC, la hibridació in situ fluorescent (FISH) i la tècnica de May-Gr

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25

Tuba, Bucak. "Determining The Roles Of Water Level And Fish Predation On Submerged Plant Growth In Shallow Lakes Using Mesocosm Experiment." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612995/index.pdf.

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Four-month mesocosm experiment from June 1st to September 25th, 2009, was conducted to determine the effect of water level dierence in combination with fish predation pressure, on submerged macrophyte development, in an eutrophic shallow lake. Effect of water level fluctuation was simulated by placing enclosures to the different water depths that included 0.8 m, 1.6 m and 2.3 m on Lake Eymir. These enclosures having a cylindirical shape and 1.2 m diameter, were open to sediment and atmosphere interaction. The highest water level mesocosms were cancelled after fifth sampling due to rapture in t

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26

Karapinar, Burcu. "Role Of Hydrology, Sewage Effluent Diversion And Fish On Mass Balance Of Nutrients In A System Of Shallow Lakes Mogan And Eymir, Turkey." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606542/index.pdf.

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In this study, annual total phosphorus (TP) budget and dissolved inorganic nitrogen (DIN) load were constructed for Lakes Mogan and Eymir for the period of eight years from 1997 to 2004 and the period of ten years covering from 1993 to 1995 and 1997 to 2004, respectively. Lake Mogan experienced seasonal and interannual water level fluctuations. Low water level experienced in 2001 led to decrease in the in-lake TP amount whereas 2-fold increase in the in-lake DIN amount was recorded. Also, high hydraulic residence time resulted in high TP and DIN amount in the lake. Increase in hydraulic reside

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27

Zamora, Plana Lurdes. "Caracterització Biològica de la Trombocitemia Essencial i la Policitemia Vera." Doctoral thesis, Universitat Autònoma de Barcelona, 2005. http://hdl.handle.net/10803/3667.

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El concepte de síndromes mieloproliferatives cròniques (SMPC) engloba un conjunt d'entitats hematològiques amb característiques clíniques i evolutives molt similars i d'etiopatogènia probablement comú. Es tracta de processos caracteritzats per l'expansió clonal d'una cèl·lula mare (stem cell) pluripotent, que dóna com a resultat una hipercel·lularitat medul·lar amb predomini d'una o més línies que arriben a diferenciar-se en elements madurs. Totes les SMPC es troben subjectes a evolució clonal però en un grau força variable: un 90% d'evolució a leucèmia aguda en la leucèmia mieloide crònica fr

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28

Akkas, Sara Banu. "The Effect Of Ecotoxicants On The Aquatic Food Web And Prey-predator Relationships." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610823/index.pdf.

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There is considerable need for higher-tier aquatic risk assessment and information on toxicant-induced molecular alterations in lower aquatic invertebrates. Thus the current study&rsquo<br>s priorities were two-fold: a novel approach utilizing higher-tier ecotoxicity bioassay-guided ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared) spectroscopy to better understand the impact of the presence of fish predation pressure &ndash<br>mimicked by predator-exuded info-chemicals &ndash<br>on cypermethrin or salinity toxicity to Daphnia pulex &ndash<br>key-stone species in lake ecosyste

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Lopez, Michele. ""Breaking the lawn chair, skinning the fish" : Categorization and Gender Differences in Slang Use in the TV Series Sex Education." Thesis, Södertörns högskola, Engelska, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-45838.

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This essay, entitled “Breaking the lawn chair, skinning the fish” - Categorization and Gender Differences in Slang Use in the TV Series Sex Education, claims that slang is part of our everyday language use and it can be found even on TV nowadays. In fact, contemporary TV series often portray a language use that includes informal language and slang expressions and words. This study aims to categorize slang expressions and words and identify gender differences in slang use in the British TV series Sex Education. By integrating quantitative and qualitative methods, the study contrasts Eble’s (199

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30

Escalona, Mena Ariadna. "Aplicació de les tècniques de citogenètica molecular per a l'establiment d'associacions genotip-fenotip." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/3839.

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Avui dia encara són moltes les persones que consulten els Serveis de Genètica Clínica per presentar malformacions congènites i/o retard mental. En aquests casos, cal establir un bon diagnòstic genètic així com realitzar una bona exploració clínica, ja que la comparació dels trets presents en pacients amb alteracions cromosòmiques idèntiques o similars permetrà detectar les anomalies clíniques comunes i, per tant, establir les correlacions genotip-fenotip. <br/>En aquest treball s'han analitzat 145 mostres de pacients que presentaven malformacions congènites i/o retard mental i infertilitat i a

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31

Duran, Puig Assumpta. "Alteracions cromosòmiques radioinduïdes: Estudis en irradiacions parcials i retrospectius." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/48531.

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La dosimetria biològica és un camp que s’ha desenvolupat dins la radioprotecció i permet estimar la dosi d’una exposició a radiacions ionitzants en casos en que no es coneix o no és prou fiable la dosimetria física. En dosimetria biològica, la metodologia més establerta per estimar la dosi d’una exposició a radiacions es basa en obtenir la freqüència d’una determinada alteració cromosòmica i, extrapolar‐la a una corba dosi‐efecte prèviament elaborada. Hi ha diversos factors que poden fer variar la freqüència de les alteracions cromosòmiques, entre aquests hi ha el cas de les irradiaci

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32

Buyukcan, Mehmet. "Preservation And Shelf Life Extension Of Shrimps And Mussels By High Hydrostatic Pressure(hpp)." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607290/index.pdf.

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Shrimp and mussel samples were cleaned, washed and exposed to steam before freezing. HHP treatment was performed at combinations of 200, 220 and 250 MPa at 25, 30, 40 and 50&deg<br>C for 10 and 20 minutes. Microbial analysis were performed by analyzing the effect of treatments on the microbial reduction in the samples. Based on the results of the microbial reduction, the best combinations of HHP treatments were determined as 250 MPa, 50&deg<br>C, 10 minute for shrimps and 220 MPa, 50&deg<br>C, 10 minute for mussels where total microbial inactivation was achieved. Storage analysis was performed

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Miró, Pastó Alexandre. "Fish as local stressors of Pyrenean high mountain lakes: Arrival process and impact on amphibians and other organisms." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/384835.

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Pyrenean high mountain lakes are naturally fishless due to natural barriers that have prevented the natural colonisation of fish species from lower streams. However, there have been numerous trout introductions to such ecosystems, both in historical and recent periods. Differing from other high mountain regions, some high mountain lakes of the Pyrenees were exploited traditionally for trout cultivation. This activity started at least centuries ago and lasted until 1950s, affecting approximately 25% of the lakes. Since 1950, and similar to other high mountain regions, a wave of modern introduct

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Ferrer, Maza Dolors. "Effects of parasitism on the condition and reproductive capacity of three commercially exploited fish species in the Mediterranean Sea." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/385347.

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This PhD thesis evaluates the links between parasitism, condition and reproduction of mature female individuals of three of the most captured fish species in the western Mediterranean Sea: European hake, Merluccius merluccius; red mullet, Mullus barbatus, and European anchovy, Engraulis encrasicolus. Indicators of fish energy reserves (total lipid content in liver, muscle and gonads) and reproductive capacity (fecundity and egg quality) were evaluated, as were the prevalence and intensity of infection by metazoan parasites. By evaluating these relationships, this thesis also provides essential

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Costalago, Meruelo David. "Trophic ecology of small pelagic fish in the northwestern Mediterranean / Ecología trófica de peces pelágicos pequeños en el Mediterráneo noroccidental." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/104559.

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In the northwestern Mediterranean anchovy and sardine are among the most ecologically and economically important species. Both species are planktivorous during all their life stages, which could alledgedly lead to expect an overlap of trophic niches. However, trophic interactions between the two species had been, until now, poorly studied. This thesis aims to examine and compare the feeding behaviors of sardine and anchovy at different stages of their development, and during different seasons, in the Gulf of Lions. In this work we have shown, through a detailed analysis of their diets and tr

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Gullberg, Beata. "The Hate U Give and Interpretive Communities : How Young Adult Fiction Can Strengthen a Political Movement." Thesis, Högskolan i Gävle, Avdelningen för humaniora, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35864.

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In the wake of the guilty verdict of George Floyd’s murderer, police officer Derek Chauvin, there is hope for change in the pattern of police brutality against black people in the United States. The Hate U Give by Angie Thomas was published three years prior to George Floyd’s death, in 2017, and is a realistic fictional novel in the young adult genre that has gained attention for its relevant contribution in the debate of racism and police violence, as the fictional victim Khalil Harris, an unarmed black teenager, does not receive the same justice as George Floyd. In this essay, reader respons

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Neininger, Sally Louise. "Aspects of dermal bone in genera spanning the fish-tetrapod transition." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619884.

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Lanza, Antonio. "Application of multigrid to general relativity." Doctoral thesis, SISSA, 1986. http://hdl.handle.net/20.500.11767/4516.

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Numerical solutions CNakamura, 1981 and reference therein, Piran and Stark, 1984) of Einsteinrs equations following the collapse of axially symmetric rotating bodies show, for some value of the initial ratio a/m, the formation of structure with a toroidal shape around centrally condensed core. If by some mechanisms, the aim ratio of the core is reduced Csee Miller and De Felice, 1985 and De Felice et al., 1985 for a discussion of such mechanisms) to a value less than unity then a rotating black hole may be formed, which will be surrounded by a massive toroidal structure. Other situat

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Giacomazzo, Bruno. "General Relativistic Magnetohydrodynamics: fundamental aspects and applications." Doctoral thesis, SISSA, 2006. http://hdl.handle.net/20.500.11767/4007.

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Vitagliano, Vincenzo. "Gravity beyond general relativity : theory and phenomenology." Doctoral thesis, SISSA, 2011. http://hdl.handle.net/20.500.11767/4681.

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Despite the notorious achievements of General Relativity, Einstein's theory is under scrutiny due to the lack of a suitable scheme to quantize gravity as well as for the puzzling features it shows both at strong (early universe, black holes) and weak (Dark Energy problem) regime. The proposal to extend the classical theory of gravity harbours the intriguing goals to cure some of these inconsistencies. A large class of modi cations of General Relativity (GR) has been widely explored in the past; in principle, the main motivation for such early e orts was to solve the problem of non-renormalizab

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Sebastiani, Lorenzo. "General Aspects of Modified Theories of Gravity." Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/367870.

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The aim of this work is to investigate the both, some mathematical and physical general aspect of modified gravity, and, more specifically, the proprieties of viable, realistic models of modified gravity which can be used to reproduce the inflation and the dark energy epoch of universe today.

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Calvó, Perxas Laia. "A study on the phylogeny and the ecology of ammonia-oxidizing bacteria using a new molecular marker based on the gene amoB." Doctoral thesis, Universitat de Girona, 2005. http://hdl.handle.net/10803/7866.

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L'agricultura i la industrialització han causat un augment significatiu del nombre d'ambients rics en amoni. La presència de compostos nitrogenats redueix la qualitat de l'aigua, causant problemes de toxicitat, deteriorant el medi ambient i fins i tot afectant la salut humana. En conseqüència, la nitrificació s'ha convertit en un procés global que afecta al cicle del nitrogen a la biosfera. Els bacteris oxidadors d'amoni (AOB) són els responsables de l'oxidació de l'amoni a nitrit, i juguen un paper essencial en el cicle del nitrogen.<br/>Els primers oxidadors d'amoni foren aïllats a finals de

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Sebastiani, Lorenzo. "General Aspects of Modified Theories of Gravity." Doctoral thesis, University of Trento, 2011. http://eprints-phd.biblio.unitn.it/672/1/TESI.pdf.

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The aim of this work is to investigate the both, some mathematical and physical general aspect of modified gravity, and, more specifically, the proprieties of viable, realistic models of modified gravity which can be used to reproduce the inflation and the dark energy epoch of universe today.

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Ciampa, Alessandra <1971&gt. "Development of methodologies for fish freshness assessment using metabonomics applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5498/1/ciampa_alessandra_tesi.pdf.

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This study focuses on the use of metabonomics applications in measuring fish freshness in various biological species and in evaluating how they are stored. This metabonomic approach is innovative and is based upon molecular profiling through nuclear magnetic resonance (NMR). On one hand, the aim is to ascertain if a type of fish has maintained, within certain limits, its sensory and nutritional characteristics after being caught; and on the second, the research observes the alterations in the product’s composition. The spectroscopic data obtained through experimental nuclear magnetic reso

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Ciampa, Alessandra <1971&gt. "Development of methodologies for fish freshness assessment using metabonomics applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5498/.

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This study focuses on the use of metabonomics applications in measuring fish freshness in various biological species and in evaluating how they are stored. This metabonomic approach is innovative and is based upon molecular profiling through nuclear magnetic resonance (NMR). On one hand, the aim is to ascertain if a type of fish has maintained, within certain limits, its sensory and nutritional characteristics after being caught; and on the second, the research observes the alterations in the product’s composition. The spectroscopic data obtained through experimental nuclear magnetic reso

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Rezzolla, Luciano. "General relativistic hydrodynamics of compressible multicomponent fluids: developments and applications." Doctoral thesis, SISSA, 1997. http://hdl.handle.net/20.500.11767/3985.

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Kawamura, Takumu. "General relativistic magnetohydrodynamic simulations of binary neutron star mergers." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/1922/1/Takumu_Kawamura_thesis_archiving.pdf.

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In this thesis I present results of my fully general relativistic magnetohydrodynamic (GRMHD) binary neutron star merger (BNS) simulations, conducted by using the numerical code "Whisky" under various conditions, such as, different Equation of State (EOS) for neutron matter (APR4, Ideal fluid and H4 EOSs), masses (with equal/unequal masses for two neutron stars), different magnetic field configurations (both fields of two neutron stars aligned with the inspiral axis, one aligned and one anti-aligned, and both anti-aligned) to investigate the effect of these parameters on the dynamics of the s

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Andorrà, Solsona Immaculada. "Adaptation and development of culture-independent techniques for the indentification and enumeration of microorganisms in wine fermentations." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/8690.

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L'objectiu d'aquesta tesi va ser l'adaptació i validació de diferents tècniques independents de cultiu per a la detecció i quantificació de la microbiota present a la fermentació vínica. Es van assajar la QPCR (PCR quantitativa) per a la quantificació i seguiment d'espècies clau i la diversitat ecològica es va analitzar per DGGE (electroforesi en gel desnaturalitzant) i la clonació d'un fragment ribosomal.<br/>Tanmateix es va estudiar l'aplicació de la Hibridació in Situ (FISH) i la QPCR amb colorants específics per tal de diferenciar cèl·lules vives i mortes. <br/>Aquestes tècniques es varen

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Knudsen, Richard Ray. "A Study on the Integration of Multivariate MetOcean, Ocean Circulation, and Trajectory Modeling Data with Static Geographic Information Systems for Better Marine Resources Management and Protection During Coastal Oil Spill Response – A Case Study and Gap Analysis on Northeastern Gulf of Mexico Tidal Inlets." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5974.

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The Oil Pollution Act of 1990 requires the development of Regional and Area Contingency Plans. For more than 20 years, the State of Florida, under both the Department of Environmental Protection and the Florida Fish and Wildlife Commission, has worked closely with the U.S. Coast Guard and the National Oceanic and Atmospheric Administration to develop these plans for coastal and marine oil spill response. Current plans, developed with local, state and federal stakeholder input, use geographic information systems (GIS) data such as location and extent of sensitive ecological, wildlife, and human

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Vernieri, Daniele. "Gravity beyond General Relativity: New Proposals and their Phenomenology." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3860.

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This Thesis is devoted to the study of phenomenologically viable gravitational theories, in order to address the most pressing open issues both at very small and very large energy scales. Lovelock’s theorem singles out General Relativity as the only theory with secondorder field equations for the metric tensor. So, two possible ways to circumvent it and modify the gravitational sector are taken into account. The first route consists in giving up diffeomorphism invariance, which generically leads to extra propagating degrees of freedom. In this framework Horava gravity is discussed, presenti

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