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Cambefort, Yves. "Le scarabée et les dieux : contribution à l'étude des coléoptères dans les mythes et symboles." Caen, 1996. http://www.theses.fr/1996CAEN1192.
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Dans l'ancienne egypte, le scarabee portait le meme nom que le dieu du soleil levant : khepri. Il etait de ce fait symbole de (re)naissance, et aussi simplement d'existence, de cette vie par excellence qui est celle du soleil (et du dieu re) ou du pharaon (et des dieux osiris et horus). Mais l'egypte n'a pas invente le scarabee : elle n'a fait que reprendre un symbole deja connu depuis l'epoque magdalenienne, et qu'on retrouve en outre chez de nombreux peuples <<primitifs>> qui n'ont jamais subi l'influence de l'egypte. En occident, en partie sous l'influence de l'egypte, le scarabee s'est trouve associe, voire identifie, a un certain nombre de dieux - de dieux et non pas de deesses, car il a toujours garde le caractere male du soleil qui feconde la terre et du ciel qui la fertilise. Mais sa petite taille et ses moeurs coprophages ont detourne de lui les regions officielles, tandis qu'on lui attribuait parfois une connotation negative ou diabolique. Cette ambiguite a confirme son caractere sacre, c'est-a-dire <<consacre aux dieux et charge d'une souillure ineffacable, auguste et maudit, digne de veneration et suscitant l'horreur>>. Eloigne des autels, le scarabee s'est refugie dans l'esoterisme, qui recherche en lui un peu de la sagesse transcendante reputee avoir ete celles des egyptiens : <<parile perdue>> mais qu'il serait peutetre possible de retrouver, comme l'ont ete les hieroglyphes.
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Laroche, Claude. "Les scarabées inscrits et autres amulettes de cœur de l’Égypte ancienne (présentation, corpus, critères de datation, caractéristiques, collections)." Thesis, Paris 4, 2014. http://www.theses.fr/2014PA040240.
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Le seul ouvrage dédié exclusivement à ce qu’il est convenu d’appeler « les scarabées de cœur » est signé du Professeur Michel Malaise et date de 1978. Ce livre est depuis cette date la référence en la matière mais, en l’absence d’un corpus, les critères de datation proposés n’y peuvent être ni exhaustifs ni très précis. L’objectif de cette étude était de remédier à ces lacunes.Les scarabées de cœur étaient des amulettes disposées dans la région du cœur de la momie d’un individu, juste après son décès, afin de le protéger contre la trahison possible de son propre cœur. En effet, le défunt devait subir l’épreuve de la pesée du cœur devant un tribunal de dieux présidé par Osiris, mais c’est son cœur qui était interrogé pour savoir quelle avait été la conduite de son propriétaire lors de son passage sur la terre. Les réponses à ces questions conditionnaient l’avenir du défunt dans l’au-delà : la vie éternelle ou l’anéantissement. Pour se concilier les bonnes grâces du cœur, d’autant plus que celui-ci pouvait mentir, les amulettes étaient inscrites d’une prière choisie dans un des chapitres 26 à 30 B du Livre des Morts, suppliant le cœur d’avoir des réponses favorables devant le tribunal.La présente étude a pris huit années pour rassembler un corpus de 1400 scarabées de cœur et autres amulettes ayant la même fonction rituelle, soit probablement plus de 85% de ceux qui sont conservés dans les musées, qui sont désignés ici sous le nom générique d’« amulettes de cœur ». Ce corpus a donné lieu à l’établissement d’une typologie permettant de déterminer des séries d’amulettes présentant des caractèristiques plastiques et épigraphiques semblables qui, croisées avec celles des amulettes de date connue, qui sont soit celles dont les propriétaires sont des personnages historiques soit celles provenant de fouilles bien datées, ont conduit à la détermination de critères de datation objectifs. L’étude présente aussi les clichés de plus de 1200 amulettes avec description, une traduction des textes inscrits et une proposition de datation<br>The only book dealing specifically with the so-called “ Heart Scarabs” was written by Professor Michel Malaise and published in 1978. It has remained since the reference on the subject but, due to the unavailibility of a corpus, the datation criteria could not be exhaustive nor accurate. The target of this dissertation was to fill these gaps. The heart scarabs were amulets to be laid on (or in) the mummy of a person just after his death in the heart area, in order to protect him from the possible treachery of his own heart. In effect, the Dead was to be put to the test of the weighing of his heart, in front of a court of gods presided by Osiris, but it was his hesart which was interrrogated in order to know whether its owner had behaved well during his life. The answers to these questions would determine whether he would be granted an eternal life or the nothingness. In order fo gain the heart’s goodwill, especially when it might lie, the amulets were inscribed with a prayer chosen in one of the chapters 26 to 30B of The Book of the Dead. This prayer was begging his heart to make favorable answers to the court.It took eight years to gather a corpus of 1400 heart amulets and others amulets with the same ritual function, called “heart amulets” in this dissertation, a number representing likely more than 85% of the total in existence. The gathering of these amulets made possible an adapted typology to be built, which lead to the determination of series of amulets with similar shape or epigraphic characteristics to be compared with the characteristics of amulets with a known date, which are the ones the owners of which are historical persons or those originating from well dated excavations. This comparison allowed for the determination of objective datation criteria. This memoire finally presents photos of more than 1200 amulets with a description, a translation of the texts and an estimated datation
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Ragab, Omneya. "Les scarabées pharaoniques de la collection du roi Farouk au musée égyptien du Caire." Thesis, Montpellier 3, 2015. http://www.theses.fr/2015MON30102.
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Le lot de scarabées présenté dans ce travail appartient à l’ancienne collection d’antiquités du roi Farouk (1920-1965). La collection fut confisquée après les événements de 1952. Certains de ces objets, dont les scarabées ici étudiés, furent déposés dans une banque, avec les bijoux de la famille royale. Ils gagnèrent les réserves du musée égyptien du Caire en 1969. Ils sont aujourd'hui conservés dans deux grandes boîtes scellées. Dans ces dernières furent triés 1800 sceaux pharaoniques, dont la majorité était des scarabées. De ce premier lot, une première sélection de 350 objets fut effectuée, de celle-ci une deuxième de 298, à partir de laquelle furent extraits les 114 scarabées étudiés ici.Ces scarabées avaient été achetés sur des critères probablement esthétiques ou parce que dans certains cas ces scarabées sont des curiosités. On ne connaît la provenance d’aucun : ils sont, par conséquent, décontextualisés, sur un plan archéologique. On ne possède, en outre, aucun renseignement sur le lieu d'origine ni même sur l'endroit où ils ont été achetés. On ne peut donc reconstituer le parcours qu'ils ont effectué. Chacun a donc été étudié comme un unicum dans la mesure où on ne pouvait les replacer dans un contexte archéologique.Le principal critère retenu pour mener cette analyse est la lisibilité des hiéroglyphes de la face et la qualité de réalisation du scarabée. Ce choix arrêté, les scarabées ont été examinés dans le détail, mesurés, photographiés et un fac-similé de la face réalisé pour chacun d'eux. D’autres critères ont été également retenus comme la typologie du dos.Le plus ancien de ces scarabées est au nom du roi Chéops de la IVe dynastie, le plus récent date de la XXVIe dynastie. Les autres ne se distribuent pas de manière harmonieuse entre les différentes périodes. Le Nouvel Empire est surreprésenté. Vient ensuite le Moyen Empire et quelques rares scarabées se répartissent entre l'Ancien Empire et l'époque tardive.Les objets ont été classés en plusieurs groupes: les scarabées avec noms de rois avec « parallèles » attestés (A), les scarabées avec noms de rois sans « parallèles » attestés (B), les scarabées avec noms de reines ou de membres de la famille royale avec « parallèles » attestés (C), les scarabées avec noms de reines ou de membres de la famille royale sans « parallèles » attestés (D), les scarabées avec noms de particuliers avec « parallèles » attestés (E), les scarabées avec noms de particuliers sans « parallèles » attestés (F), les scarabées autres avec « parallèles » attestés (G), et les scarabées autres sans « parallèles » attestés (H). Enfin, un commentaire a été effectué<br>The lot of scarab beetles presented in this work belongs to the former collection of Antiquities of King Farouk (1920-1965). The collection was confiscated after the events of 1952. Some of these objects, including the scarab beetles studied here, were deposited in a bank with the jewels of the royal family. They were deposited in the archives of the Cairo Egyptian Museum in 1969. Today they are kept in two large sealed boxes. One box contains 1800 pharaonic seals, most of which were scarab beetles. Of this lot, a first selection of 350 objects was made that was then narrowed down to 298 objects, from which the 114 sacarab beetles studied here were extracted.These scarab beetles were probably purchased on aesthetic criteria or because, in some cases, they were curiosities. We do not know the origin of any: they are, therefore, decontextualized, from an archaeological plan. There is no information available on the place of origin or even about where they were purchased, so it is not possible to reconstruct their history. Each has been studied as a unicum since we could not place any of them in an archaeological context.The main criterion used to conduct this analysis was the readability of the hieroglyphs on the face and the quality of implementation (or execution) of the beetle. The choice was made after the scarab beetles were examined in detail, measured, photographed and a facsimile of the face made for each of them. Other selection criteria were applied like the typology of the back.The oldest of these scarab beetles dates from the time of King Khufu of the Fourth Dynasty; the most recent of them dates to the XXVI Dynasty. The others are distributed unequally among different periods. The New Kingdom is over-represented. Then comes the Middle Kingdom. A few scarab beetles are divided between the Old Kingdom and the Late Period.The objects were classified into several groups: scarab beetles with names of kings with "parallels" attested (A), scarab beetles with kings names without "parallels" attested (B), scarab beetles with names of queens or members royal family with "parallels" attested (C), scarab beetles with names of queens or members of the royal family without "parallels" attested (D), scarab beetles with individual names with "parallels" attested (E), scarab beetles with specific names without "parallels" attested (F), scarab beetles with other "parallels" attested (G), and scarab beetles with other "parallels" attested (H). Finally, a comment was made
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Bayon, Chloé. "Microlentilles et micro-miroirs en cristal liquide cholestérique." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30289/document.
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La structure moléculaire d'un cristal liquide cholestérique (CLC) est hélicoïdale et donne lieu à des propriétés optiques remarquables comme la réflexion sélective de la lumière. La structure cholestérique soulève des questions fondamentales comme la relation entre chiralités moléculaire et mésoscopique, et son impact sur les propriétés optiques. Elle est omniprésente en biologie (organisation de la chitine, de la cellulose, du collagène ou de la chromatine). Elle est aussi utilisée en technologie : en cosmétologie, dans les afficheurs nématiques super-torsadés, les écrans réflecteurs, les capteurs de température ou pression, les matériaux pour les applications photoniques en général. Le but du présent travail est de décrire et comprendre l'interaction de la lumière avec différents types de structures hélicoïdales non-monotones élaborées dans cette thèse - films cholestériques synthétiques (monocomposant ou hybrides i.e. dopés en nanoparticules d'or) - ou dans un matériau biologique (carapace du scarabée Chrysina gloriosa). Différentes techniques de caractérisation optique ont été utilisées suivant le matériau à étudier et les questions posées. La partie principale du manuscrit est dédiée aux microlentilles et micro-miroirs cholestériques. Nous avons étudié la texture polygonale cholestérique et mis en évidence qu'elle se comporte comme un réseau de microlentilles chirales à l'aide de la microscopie confocale couplée à la spectrophotométrie. Ces microlentilles organiques, élaborées en deux étapes par auto-assemblage, ont la particularité d'être sélectives en longueur d'onde. Nous avons ensuite montré que la texture polygonale de la carapace de Chrysina gloriosa, analogue biologique, est un réseau de micro-miroirs sphériques et de microlentilles convergentes. La seconde partie du manuscrit est consacrée à l'élaboration de matériaux hybrides CLC et nanoparticules d'or et à l'étude de leurs propriétés optiques. Les propriétés optiques de ces nanocomposites ont été sondées à l'aide de différentes techniques (résonance plasmon, spectrométrie Raman etc)<br>The molecular structure of a cholesteric liquid crystal (CLC) is helical and gives rise to outstanding optical properties like the selective reflection of the light. Cholesteric structure raises fundamental questions such as the relationship between molecular chirality and mesoscopic chirality, and its impact on optical properties. It is omnipresent in biology (organisation of chitin, cellulose, collagen or chromatin). It is also used in technology: cosmetology, super-twisted nematic displays, reflective screens, temperature or pressure sensors, materials for photonic applications in general. The purpose of this work is to describe and understand the interaction of light with different types of non-monotonous helical structures elaborated in this thesis - synthetic cholesteric films (single-component or hybrid i.e. doped with gold nanoparticles) - or in a biological material (Chrysina gloriosa beetle). Several optical characterisation techniques have been used, depending on the sample to study and the questions which are rised. The main part of the manuscript is dedicated to cholesteric microlenses and micro-mirrors. We studied the cholesteric polygonal texture and highlighted that it acts as a chiral microlens array by using confocal microscopy coupled to spectrophotometry. These organic microlenses, developed in a two-step process by self-assembly, have the specificity of being wavelength-selective. We then showed that the polygonal texture of Chrysina gloriosa, as a biological analogous, is an array of spherical micro-mirrors and convergent microlenses. The second part of the manuscript is devoted to the elaboration of hybrid materials composed of CLC and gold nanoparticules and the study of their optical properties. Optical properties of these nanocomposites were probed using various techniques (plasmon resonance, Raman spectroscopy etc)
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Curriers, Douglas D. "Scarabs their implications on Israelite history /." Theological Research Exchange Network (TREN), 1988. http://www.tren.com.
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Gorton, Andrée Feghali. "Egyptian and Egyptianizing scarabs : a typology of steatite, faience and paste scarabs from Punic and other Mediterranean sites /." Oxford : Oxford university committee for archaeology, 1996. http://catalogue.bnf.fr/ark:/12148/cb36181001m.
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Richards, Fiona. "Anra scarab : an archaeological and historical approach." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/26878.
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Dainese, Francesco. "Digital Transformation from Predictive Maintanance. A Case Study on Saipem's Scarabeo 9 Semisub." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
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L'obbiettivo della tesi segue il processo di digitalizzazione della nave da perforazione Scarabeo 9. Lo scopo è di migliorare le procedure di manutenzione sulla componentistica della nave con l'ausilio di una mirroring history station(MHS) con la quale è possibile ricavare i dati prodotti dalle componenti. La metodologia seguita vede uno studio preliminare dei sottosistemi della nave, le procedure di manutenzione adottate e di quali siano gli asset critici. Tale definizione viene ristretta alle apparecchiature che sono tendenzialmente più soggette a manutenzione. Successivamente viene preso il caso reale di un problema ad un generatore; se ne vogliono scoprire le cause con l'ausilio di analisi statistiche. L'analisi conoscitiva sui comparti nave e del sistema di perforazione ha messo in risalto la presenza di componenti di processo di tipo comune. Le analisi statistiche hanno permesso di individuare e descrivere puntualmente il momento in cui si è riscontrato il problema ma analisi più approfondite non hanno dato risultati attendibili sulla natura del problema. Il lavoro svolto ha messo in luce i punti di forza e di debolezza di un sistema di monitoraggio che utilizzi degli algoritmi per l'analisi statistica e le conclusioni vogliono proporsi come suggerimento agli sviluppi futuri del processo di digitalizzazione. In previsione di adottare un sistema di monitoraggio real time della nave e dei suoi singoli componenti, si è arrivati alla conclusione di impostare un procedimento deduttivo dell'analisi dei dati. L'idea è definire a priori quali parametri debbano essere monitorati. Lo sviluppo del programma di monitoraggio, verte sulla definizione di efficienza per il lavoro svolto da ogni singolo componente, e permetterebbe di identificare anomalie secondo il paradigma di controllo conditioned-based; secondo cui le azioni di intervento siano necessarie nel momento in cui alcuni parametri prestabiliti escano da un range di affidabilità.
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Mathew, Thomas J. "SCARAB : development of a rugged, low cost, inspection-class robotic platform." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/13757.
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This dissertation details the design and development of a prototype of a new robotic platform designed to carry a variety of sensors into environments that are too dangerous or confined for human workers, and forms part of a series of three concurrent M.Sc(Eng) dissertations which will integrate into a complete system. Ultimately this platform will be controlled and transported by the man-wearable harness and control station developed by W.K. Fong, and will gather data using the sensor payloads designed by G. Knox. Each dissertation, however, has independently quantifiable goals and results. An important application area for such a system is Urban Search and Rescue (USAR): the field of work concerned with the discovery, extrication, and treatment of survivors trapped in collapsed structures. These typically occur as a result of terrorist attacks, natural disasters, or engineering failure. Human workers, often assisted by dogs, are trained in this work but the danger of the working environments make USAR a key area where the use of robotic assistance can make a massive difference in helping to save lives - both those of rescuees and rescuers. A body of existing work, both in the commercial and academic spheres, has been done in this regard, and as a result there is much to be learned from the experiences of others. The history of robot-assisted USAR work, as well as the existing robots available, is surveyed and critically analysed. Significant challenges are noted: existing systems frequently lack sufficient mobility, are too large, difficult to transport and deploy, difficult to use, and very costly. Their cost has affected the prevalence of their use both as a barrier to acquisition but also during their use; robot operators frequently have their decisions constrained by the financial risk of losing or damaging a robot. Accordingly, it is proposed to develop a small, rugged, low-cost inspection-class robot that can be quickly and easily deployed in a variety of scenarios. This development work is covered in three sections; the mechanical and industrial design of the platform, its design, manufacture and assembly are considered first. This is followed by a description of the electrical and electronic systems needed to power and control the robot as it conducts inspections in challenging terrain. To protect the robot from damage in this terrain, impact-absorbing wheels are developed. The test-driven iterative design approach followed, as well as the equipment and methods used therein, constitute a large portion of this dissertation and are detailed in their own chapter which can be read as a sub-project within the main project. The finished prototype is tested against the developed specifications, and from these results conclusions are drawn and recommendations for future work made.
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Keller, Oliver. "Paracotalpa ursina species complex revealed: the true biodiversity of the California bear scarabs (Coleoptera: Scarabaeidae)." Thesis, Wichita State University, 2014. http://hdl.handle.net/10057/10966.
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Fernandez, del Rio Lia. "An Investigation of the Polarization States of Light Reflected from Scarab Beetles of the Chrysina Genus." Thesis, Linköpings universitet, Tillämpad optik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72306.
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The polarization behaviour for six species of Scarab beetles from the Chrysina genus is investigated with Mueller Matrix Spectroscopic Ellipsometer (MMSE). The m41 element of the matrix, which is related to the circular polarization behaviour, is analysed. The ellipticity, degree of polarization and azimuth angle are also presented to get a better understanding of the polarization effect. The measurements were done with a dual rotating compensator ellipsometer. The measured wavelength region was from 240 to 1000 nm and the angle of incidence from 25° to 75° in most of the cases. In general very high ellipticities (near circular) are reported. All specimens studied reflect both right- and left-handed polarized light. Depending on the species, two general types of polarization behaviour were observed. Chrysina macropus and Chrysina peruviana showed m41 values close to 0. Green stripes on Chrysina gloriosa showed similar polarization behaviour whereas gold stripes on the same beetle had much more pronounced m41 variations. Large m41 variations were also observed for Chrysina argenteola, Chrysina chrysargyrea and Chrysina resplendens. Four specimens of Chrysina resplendens show different m41 patterns suggesting differences in their structures.
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Clark, Daniel R. "Phylogenetic analysis of the scarab beetle tribe Cyclocephalini (Coleoptera: Scarabaeidae: Dynastinae) based on adult morphological characters." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/5050.
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The scarab beetle tribe Cyclocephalini (Coleoptera: Scarabaeidae: Dynastinae) includes 15 genera and approximately 500 species that are distributed primarily in the New World. Species in the group are important pollinators of aroids, palms, and lilies, some are agricultural pests, and a few are invasive in areas where they have been introduced. Evolutionary relationships of the group have not been examined, and monophyly of the tribe and relationships of genera have not been addressed. As a result, the classification remains unstable, and there is no foundation with which to interpret evolutionary patterns. To provide an evolutionary framework, a phylogenetic analysis using 77 adult morphological characters was performed. Representatives from all recognized cyclocephaline genera were examined as well as taxa that have historically been included in the tribe. Outgroups included exemplars from the dynastine tribes Oryctini, Oryctoderini, and Pentodontini and the ruteline tribes Anomalini and Rutelini. Based on the analysis, Cyclocephalini, as currently circumscribed, does not constitute a monophyletic lineage. Thus, the current classification does not reflect evolution, and revision is required. Based on strong character support, the genera Eriocelis and Stenocrates are not a part of the new cyclocephaline clade while genera Parapucaya and Neohyphus are members of the new Cyclocephalini.<br>Thesis (M.S.)--Wichita State University, College of Liberal Arts and Sciences, Dept. of Biological Sciences.
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RAISON, FREDERIC. "Modelisation et etude du bilan radiometrique de l'instrument scarab embarque sur le satellite meteor 3-7." Paris 7, 1996. http://www.theses.fr/1996PA077357.
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Le radiometre a balayage scarab a produit des donnees permettant la mesure du bilan radiatif de l'atmosphere de fevrier 1994 a mars 1995. Nous avons recherche les causes majeures d'erreur dans la chaine de mesure de l'instrument. Scarab etant muni de detecteurs pyroelectriques nous avons calcule la temperature des sources de chaleur pouvant affecter la mesure. Nous avons relie la configuration orbitale du satellite au comportement thermique du radiometre. En outre, nous avons simule numeriquement son signal de sortie dans une configuration orbitale particuliere. D'autre part, nous avons corrige les donnees du canal solaire dont la reponse spectrale laisse passer une faible partie du rayonnement thermique. Dans cette optique, nous avons developpe et compare differentes methodes basees sur la relation entre le canal solaire et le canal fenetre infrarouge. Les sources de luminance embarquees pour l'etalonnage du canal solaire s'etant revelees instables, nous avons developpe une methode geophysique permettant de relier l'etalonnage de ce canal a celui du canal total etalonne en vol de facon stable.
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Ochi, Teruo. "Taxonomic studies on the coprophagous scarab-beetles of Borneo : a review of Scarabaeinae and Coprinae (Coleoptera, Scarabaeidae)." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/126564.
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Gustafson, Johan. "Optical Studies and Micro-Structure Modeling of the Circular-Polarizing Scarab Beetles Cetonia aurata, Potosia cuprea, Liocola marmorata." Thesis, Linköpings universitet, Tillämpad optik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-61254.
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The aim of the work presented in this thesis is to contribute to a fundamental understanding of polarizing phenomena in some scarab beetles. The aim is also to study the beetle structures as inspiration in fabrication of artificially sculptured films. The three investigated species Cetonia aurata, Potosia cuprea and Liocola marmorata are of the family Scarabaediae and subfamily Cetoniianae (Guldbaggar). They were all collected at Swedish locations and are the only species of Cetoniinae scarabs in Sweden. This work reports on their optical properties represented by Mueller matrix elements, degree of polarization data and trace curves in the Cartesian complex plane representation of polarized light. From these results we verifyan earlier structural model for the Cetonia aurata and make way for similar models of the other two species. The ellipsometer used in this work is of dual rotating compensator type from which the complete Mueller-matrix for the medium examined can be obtained. The ellipsometric measurements were conducted on the scutellum for four different angles of incidence, 45°, 55°, 65° and 75° over a wave-length range of 245-1000 nm. Common for all examined species is that left polarization is observed in the wavelength range of 400 800 nm. For most of these species the polarization state is close to circular at some wavelengths especially at smaller angles of incidence. In general the degree of polarization is high (above 50%) when the polarization is near-circular. The degree of polarization also shows a clear dependence on the angle of incidence. The earlier model for Cetonia aurata shows a good agreement with the experimental data of this work. The model is also found as a good basis to work from to create models for the other two species.
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Ocampo, Federico Carlos. "Phylogenetic analysis of the scarab family Hybosoridae and monographic revision of the New World subfamily Anaidinae (Coleoptera: Scarabaeoidea)." [Lincoln, Neb. : University of Nebraska-Lincoln], 2004. http://0-www.unl.edu.library.unl.edu/libr/Dissertations/2004/OcampoDis.pdf.
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Thesis (Ph.D.)--University of Nebraska-Lincoln, 2004.<br>Title from title screen (viewed on Aug. 10, 2005). PDF text: 386 p. : ill., maps. Includes bibliographical references (p. 368-379 of dissertation).
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Fernández, del Río Lía. "An Investigation of the Polarizing Properties and Structural Characteristics in theCuticles of the Scarab Beetles Chrysina gloriosa and Cetonia aurata." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-86339.
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Light reflected from the scarab beetles Cetonia aurata (C. aurata) and Chrysina gloriosa (C. gloriosa) has left-handed polarization. In this work the polarizing properties and structural characteristics of the cuticles of these two beetles are investigated with two different techniques: scanning electron microscopy (SEM) and Mueller-matrix spectroscopic ellipsometry (MMSE). SEM is used to get cross section images of the epicutucle and the endocuticle. Thicknesses around 18 μm were measured for both layers for C. aurata and between 12 and 16 μm for C. gloriosa. A layered structure is observed in both beetles. In addition, a cusp-like structure is also observed in C. gloriosa. MMSE showed left-handed near-circular polarization of light reflected on both beetles. For C. aurata this is observed in a narrow wavelength range (500-600 nm) and for C. gloriosa in a wider wavelength range (400-700 nm) when measured on golden areas of the cuticle. C. gloriosa also has green areas where the reflected light was linearly polarized. The results are used in regression modelling. A good model approximation was found for C. aurata for angles up to 60 whereas a good starting point for future work was reached for C. gloriosa.
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BRIAND, VINCENT. "Vers une meilleure exploitation des observations satellitales pour l'etude de l'effet radiatif des nuages. Etude effectuee a l'aide des donnees scarab et isccp." Paris 6, 2000. http://www.theses.fr/2000PA066077.
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Des ameliorations ont ete apportees a deux des principales etapes du traitement des mesures satellitales pour determiner l'effet radiatif des nuages : l'identification des scenes ciel clair et la conversion des luminances ondes courtes mesurees en flux radiatifs au sommet de l'atmosphere. De nouvelles methodes d'identification des scenes ciel clair pour les donnees du radiometre ont ete developpees en utilisant les canaux a bandes etroites dans les longueurs d'ondes visibles et infrarouges. L'algorithme d'identification des nuages, developpe dans le cadre du projet isccp, a ete adapte a la resolution spatiale des donnees scarab. Une autre methode permettant de prendre en compte les caracteristiques temporelles des donnees, a ete elaboree en se basant sur une classification plus precise des pixels selon le geotype. Les flux ondes longues ciel clairs issus de ces traitements peuvent etre inferieurs de plus de 10 w. M - 2 a ceux obtenus par une identification selon la methode erbe qui utilise des canaux a bande large sensibles a la presence de vapeur d'eau. La comparaison des resultats obtenus permet d'evaluer a environ 3 w. M - 2 l'incertitude sur la moyenne zonale des flux ondes longues ciel clair. L'anisotropie du rayonnement ondes courtes varie enormement en fonction de la scene observee ce qui rend cette conversion tres difficile et entraine des erreurs importantes sur les flux instantanes. Une methode integrant dans un reseau de neurones les proprietes physiques des nuages, permet de simuler le comportement angulaire des luminances ondes courtes. Les biais importants sur les flux determines par les modeles directionnels de erbe sont fortement reduits par cette methode. L'incertitude residuelle liees a la geometrie d'observation est de l'ordre de 1% pour les scenes totalement couverte sur l'ocean. Les resultats obtenus, etendus a d'autres scenes nuageuses, permettront d'effectuer des etudes plus precises de l'interaction nuages/rayonnement.
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Nutt, Kerry Anne. "Characterisation of Proteinase Inhibitors from Canegrubs for Possible Application to Genetically Engineer Pest-Derived Resistance into Sugarcane." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16131/.
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In 1931, Mungomery stated "whitegrubs have been for years past, and still are, the worst insect problem confronting the sugar industry". This statement remains true to this day, with canegrubs costing the Australian sugar industry A$7.22 million in lost production and in use of insecticides. The development of a sugarcane cultivar with resistance to canegrub attack would be a valuable addition to the recently implemented canegrub management program. This thesis examined the possibility that natural inhibitors derived from canegrubs could be incorporated in sugarcane to reduce or prevent its destruction by canegrubs. The research described here demonstrated that canegrub haemolymph contains inhibitors with activity against commercially purified enzymes and serine proteases found in crude midgut extracts. A cDNA encoding a potential canegrub protease inhibitor (DA10 12) belonging to the Ascaris family was cloned, but it did not have activity against the major canegrub midgut proteases. This protein does, however, still have potential for modification into a serine protease inhibitor suitable for use as a novel insect resistance transgene. The possibility of using haemolymph derived inhibitors as novel antimetabolites in a canegrub management strategy based on transgenic plants was also explored. The findings suggest that proteins with properties similar to those of DA10 12 will require the presence of a signal peptide and/or codon optimisation for successful expression in sugarcane. The research outlined in this thesis is the first investigation of protease inhibitors in the haemolymph of scarab larvae, and is the first report of an Ascaris family inhibitor that does not inhibit a serine protease.
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Hadapad, Ashok B. "Host specificity, genetic variability and biology ot the entomopathogenic fungus, Beauveria brongniartii (Saccardo) Petch, for control of soil inhabiting scarabs, Melolontha melolontha L. and Holotrichia serrata F. (Coleoptera: Scarabaeidae)." Beuren Stuttgart Grauer, 2006. http://d-nb.info/98987379X/04.
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Klop, Damian J. R. "Beneath the raptor’s wings : the avian composition grasping the symbol for eternity in Egypt." Thesis, Stellenbosch : University of Stellenbosch, 2008. http://hdl.handle.net/10019.1/2724.
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Thesis (MPhil (Ancient Studies)--University of Stellenbosch, 2008.<br>A particular motif in Egyptian art is that of avians. This is frequently depicted in a
significant number and variety of visual sources from the tomb of Tutankhamun (KV
62) (1336-1327 BC) and other find contexts throughout Egyptian history from c. 3000
BC, but is little understood. The motif mostly depicts an avian creature with wings
outstretched, talons grasping the Egyptian hieroglyph symbol for eternity (shen). In
some instances the avian’s falcon or vulture body or parts of the body is/are replaced
with parts of another creature, namely that of a snake, cobra, ram, human, duck, or a
hieroglyph sign. A study was undertaken to assess how and why this avian motif was
composed and what the function in Egyptian culture was.
A manual search of published material for relevant visual sources depicting specific
versions of the avian motif was undertaken and selected sources were indexed into a
representative graphical database including one hundred and ninety-one items.
Textual sources (academic literature and literature from ancient Egypt) were then
consulted to support and/or expand on the iconographic, symbolic, and functional
aspects of the motif:
- At the iconographic level, the historical development and ‘structural dynamics’ of
the motif are investigated to deduce the artistic rules that applied to its creation.
- At the symbolic level, the symbolic meaning of the artwork is ascertained by
theorizing on the meaning of the motif and its parts in an Egyptian context.
- At the functional level, the function of the artwork is ascertained by investigating
how the motif’s symbolism was intended to be applied to benefit the individual.
The results of this research is that the avian motif developed over time according to
strict artistic rules; that it symbolized the king, eternity and protection; and that its
function was to protect the king in all phases of his existence in a political and
mythological context in order to ensure that the he would attain an eternal life in the
afterlife. In the mind of the ancient Egyptian this was achieved through the
transference of the avian motif’s magical qualities to the user.
The intended outcome of this study is to highlight the avian motif’s importance in the
context of the ancient Egyptian culture.
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WU, MIN-NAN, and 吳敏男. "Coloration and Structure of the coleoptera of Taiwanese bronze scarab (Anomala expansa) and Taiwanese Iridescent Gold Scarab (Mimela splendens)." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/6nx78x.
Full textAbstract:
博士<br>國立中正大學<br>物理系研究所<br>105<br>This paper is to correlate the structural and optical characteristics of elytras of two beetles Anomala expansa and Mimela splendens. The first beetle’s elytron is composed by a scale-like texture on the surface and a repeated bi-layers underneath. The reflectivity spectrum shows iridescence that the peaks shifts from yellow to green color regions as long as the incident angle (θ) increases. A shoulder peak at 600 nm (θ = 20⁰) is absent after gently scraping the surface, which indicates that the yellow color is contributed by the scale-like texture. The remaining peak at 550 nm (θ= 20⁰) in the spectrum resembles the simulated spectrum by assuming the refractive index of n = 1.54 and n = 1 for the adjacent bi-layered structure. This implies that the multi-layered structure contributes to the green coloration as well as the iridescent effect.
Another paper is to correlate the structural and optical characteristics of elytras of a beetle Mimela splendens by microscopy, angle-dependent reflection spectra, and theoretical calculations. Given the nanostructure, a good fit is achieved between the calculation and experiments, which contain the structural patterns and the refractive indices of the elytra layers. This structural-optical correlation may provide a bio-inspired material in industry and benefit in environment protection.
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Midgley, J. M., I. J. Collett, and Martin Herrer Villet. "The distribution, habitat, diet and forensic significance of the scarab Frankenbergerius forcipatus (Harold, 1881) (Coleoptera : Scarabaeidae)." 2012. http://hdl.handle.net/10962/d1010992.
Full textAbstract:
Records of African beetles feeding on carrion are scattered and incomplete, but important to forensic entomology. Thirty-three specimens of Frankenbergerius forcipatus (Harold, 1881) were found on carrionnear Grahamstown, Eastern Cape, South Africa, providing new insight into the distribution (hills and mountains), habitat (fynbos and forest), biology (generalist on decaying material) and forensic significance (wet-decay, late opportunist) of the species.
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Elmowitz, Daniel Ethan. "Overwintering behavior of the entomopathogenic nematodes Steinernema scarabaei and AND Heterohabditis bacteriophora (Rhabditida: Steinernematidae and Heterorhabditidae) and their white grub hosts (Coleoptera: Scarabaeidae)." 2009. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051200.
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