Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"scallop"”.
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Experimental cultivation of the South African scallop Pecten sulcicostatus
Although scallops have a high economic value, they have yet to be commercially harvested or farmed in South Africa. Of the 29 Pectinid species recorded on the southern African coastline, Pecten sulcicostatus is the only species considered suitable for aquaculture, due to its large size. An …
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Structural Studies of Scallop Abductin, a Compressible Elastomer that Translates Hydrophobic Interactions to Elasticity
… of the elastic hinge ligament in marine scallops. Until now, very little was known about the structure and function of this compressible elastomer. Biochemical studies of a synthetic 25 amino acid peptide of abductin produces fibers that assemble into a gel matrix at room temperature. …
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The fisheries biology of two scallop species, Pecten maximus (l.) and Aequipecten opercularis (l.), in the waters around Shetland, Scotland.
Commercial fishing for Pecten maximus and Aequipecten opercularis<br/>has taken place in Shetland since the late 1960’s and early 1970’s,<br/>respectively, with fluctuations in landings of both species during this time.<br/>Recognition of the importance that shellfish fishing contributes …
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Evaluation of the quality of individual quick frozen fish products.
… the quality of the adductor muscle of post-rigor scallops (Pecten maximus)and gilthead seabream fillets (Sparusa urata) were studied in regard to the integrity of muscle structure, myofibrillar protein denaturation and aggregation, lipid degradation, texture and sensory changes. This information …
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A study on the relationship between gingival biotype and the underlying crestal bone morphology
이번 연구의 목적은 상악 전치부에서 하방 치조골의 scallop 크기가 치은의 biotype에 따라 차이를 보이는지를 평가하여 임상상황에 적용하고자 함이다. 정기검진을 위해 아주대학교 병원 치과에 내원한 환자 중 상악 전치부(상악 좌·우 중절치, 측절치, 견치)에 치은 염증 소견을 보이지 않는 20세부터 50세의 건강한 환자를 대상으로 선정하였다. 총 40명의 환자, 240개의 치아를 대상으로 시행하였다(thin type, thick type 각각 20명). Probe transparency method를 사용하여 biotype을 …
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An investigation of advanced design techniques for improved mixed flow turbine efficiency
… investigated the aerodynamic impact of turbine scalloping. Used for its mechanical advantages such as reduced bore stress and inertia, turbine scalloping is known to cause a reduction in efficiency, however the reasons for this are not well documented in literature. This study involved a flow …
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Growth and development of larval bay scallops (Argopecten irradians) in response to early exposure to high CO2
… effects on larval growth and development of bay scallop (Argopecten irradians). Using five experiments varying the timing of exposure of embryonic and larval bay scallops to high CO2, this thesis identifies two distinct stages of development during which exposure to high CO2/low pH causes …
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Growth and development of larval bay scallops (Argopecten irradians) in response to early exposure to high CO₂
… effects on larval growth and development of bay scallop (Argopecten irradians). Using five experiments varying the timing of exposure of embryonic and larval bay scallops to high CO₂, this thesis identifies two distinct stages of development during which exposure to high CO₂/low pH causes …
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Quality of on-board cryogenically frozen sea scallops (Placopecten Magellanicus)
Scallops have traditionally been blast or sharp frozen. This study compared the quality of at-sea cryogenically frozen scallops with fresh and mechanically frozen scallops. A liquid CO₂ batch freezer was installed on-board the scallop boat. Samples were analyzed for microbiological, physical, …
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Pollution prevention and treatability of phosphate laden wastewater in the seafood industry
… 201,200 mg/L and an average OP of 20,500 mg/L. Scallop wastewater from industry two had an average pH of 7.61, COD of 7,620 mg/L, TOC of 4,240 mg/L, TSS of 550 mg/L, OP of 100,000 mg P/L, CP of 1,137,000 mg P/L, and an average TP of 1,237,000 mg P/L. Stock solutions of sodium tripolyphosphate …
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Design of two-tailed swimmer to swim at low-Reynolds number
… cyclic motion requirements of the Scallop Theorem. Furthermore, a swimmer must employ one of the three mechanisms stated by Purcell to be capable of swimming at low Reynolds number, a three link swimmer, a corkscrew, or a flexible tail. Three devices utilizing the flexible-tail …
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On some optimal control problems on networks, stratied domains, and controllability of motion in fluids.
… different strategies to overcome the so-called scallop paradox concerning periodic locomotion in fluid. We show how to obtain a net motion exploiting the fluid's type change during a periodic deformation. We consider two different models: in the first one that change is linked to the magnitude …
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Scalloped Leading Edge Vaned Diffuser Analysis for a Compact High Pressure Ratio Centrifugal Compressor
… stage vaned diffuser was modified to include a scalloped leading edge ridge to aid stage total-total compression efficiency improvement. A full 3D Navier-Strokes based CDF solver was used in estimating the delta increase in device total-total efficiency due to scalloped leading edge, from the …
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Essays on Environmental Regulation
… a stylized model calibrated to the Atlantic scallop fishery, Aaron Berman and I evaluate the use of output, input, and quantity-based regulations over time when a resource exhibits ecological and economic uncertainty across large areas of space. We show that, for a given ultimate …
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Applications of Intelligent Manufacturing and of Numerical/Analytical Modeling Techniques to Milling Processes
… to associate the surface roughness term to the scallop height value, and to include a model that describes the mechanism of scallop height formation into the Optimal Control Problem formulation. Chapter 2 of this work is related to the application of FEM techniques to study milling processes. In …
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The Effects of Manipulating One Requirement of a Conjunctive Schedule on Responding in the Pigeon
… subjects. Subjects responded in a fixed-interval scallop on all schedules. The overall rate of responding was maintained across conditions. Conclusions. These results suggest that maintenance of responding on a conjunctive fixed-interval fixed-ratio schedule is dependent upon the selection of the …
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Automated Process Planning for Five-Axis Point Milling of Sculptured Surfaces
… objectives while interference avoidance and scallop height tolerance acts as constraints. Two methods are proposed, following an assignment-repairing approach and a direct optimization approach respectively. EA tools of particle swarm optimization (PSO) and genetic algorithm (GA) are applied …
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Phenotypic Plasticity in Economically and Ecologically Important Bivalves in Response to Changing Environments
… three different species: the purple-hinge rock scallop Crassadoma gigantea, the Mediterranean mussels Mytilus galloprovincialis, and the Olympia oyster Ostrea lurida. By choosing a suite of native and non-native, inter- and subtidal species, I hope to obtain a broad snapshot of physiological …
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Fixed -interval timeout from avoidance with humans
… pattern typically associated with animals is the scallop: a pause followed by a gradual acceleration in responding. Humans generally show terminal-minimum (i.e., pause until the end of the interval, then make 1 or 2 responses) or constant-rate patterns. There have been numerous investigations of …
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Taphonomic studies of fossil preservation in coarse-grained siliciclastic environments
… sediments, cyanobacteria and soft tissues (scallop adductor muscles) were incubated in silica sand or clay minerals for up to two months. Clay mineral veneers coated both cyanobacterial filaments and the surfaces of soft tissues and were formed by two main processes: 1) the adhesion of fine …
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