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Dissertations / Theses on the topic 'Whiting'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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1

Staniland, Iain John. "The feeding ecology and behaviour of whiting (Merlangius merlangus L.)." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/34239.

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The development of multispecies fisheries models has led to a need for improved information on the diet composition and consumption rates of fish. This study was an attempt to investigate the feeding ecology of whiting, with an emphasis on how the fishes' behaviour might influence its diet. Analysing the stomach contents of North Sea whiting, found that as whiting increased in size they switched from a crustacean, to a fish dominated diet, and the average size of prey eaten increased. Smaller trawl caught whiting were found to have a higher instance of regurgitation. The whiting appeared to be
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2

Long, Jacqueline. "Whiting Events Off Southwest Florida: Remote Sensing and Field Observations." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6535.

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“Whiting” is a term used to describe a sharply defined patch of water that contains high levels of suspended, fine-grained calcium carbonate (CaCO3). These features are named for their bright (at times white) appearance when compared to surrounding waters, and have been found to occur globally, persisting for multiple consecutive days. Although whitings have been widely studied using chemical, biological, geological, and physical techniques, there has been little effort to document their spatio-temporal distributions in a systematic way, not to mention the lack of consensus on what generates w
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3

Norris, Andrew J. "Sensory modalities, plasticity and prey choice in three sympatric species of whiting (Pisces:Sillaginidae) /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17866.pdf.

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4

Demain, Dorota K. "Settlement ecology of juvenile cod Gadus morhua, haddock Melanogrammus aeglefinus and whiting Merlangius merlangus." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158304.

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Cod, haddock and whiting are among the most economically important species in the Scottish demersal fishery. Juvenile settlement, the transition from pelagic to demersal habitat, has been identified as an important milestone for these species, but there is insufficient knowledge and data about this life stage. It is believed that the period of settlement has an impact on recruitment success, as important density-dependent processes may take place, such as competition for suitable substrate, refuge or prey. Also, knowledge of settlement timing and duration is relevant to understanding populatio
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5

Ghaffar, Mazlan Abd. "Food consumption patterns and dietary digestibility of whiting (Merlangius merlangus L.) fed in laboratory conditions." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327516.

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6

Zheng, Xiaohong. "Analysis of cod, haddock and whiting distribution in UK waters in relation to environmental variables." Thesis, University of Aberdeen, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395051.

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This study systematically analysed the spatial distribution of cod (<I>Gadus morhua, </I>[Linnaeus, 1758]), haddock (<I>Melanogrammus aeglefinus, </I>[Linnaeus, 1758]) and whiting (<I>Merlangius merlangus</I>, [Linnaeus, 1758]) in UK waters, with particular reference to the North Sea and west coast of Scotland, in relation to environmental variables: sea surface temperature (SST), sea bottom temperature (SBT) and depth using a combination of qualitative (geographic information systems) and quantitative (statistics) methods. Fish abundance data were derived from both survey and fisheries record
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7

Burgess, J. E., and n/a. "Long term evaluations of the effects of Irlen tinted lenses on academic and related skills." University of Canberra. Education, 1990. http://erl.canberra.edu.au./public/adt-AUC20060622.105432.

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This survey research systematically collects Information on the long term effects of Irlen tinted lenses, from a specific diagnosed scotopic sensitive population. The survey used is based on Whiting's survey (1988), with variations and extensions made to increase information attained. Although the main focus of the survey is reading and related academic skills, other areas presenting new directions for further research, have also been included. 306 diagnosed scotopic sensitive Individuals, who had been using prescribed Irlen tinted lenses for a minimum of six months, were surveyed. 82.8 percen
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8

Hadfield, Amelia. "Stages of Englishness, English national identity in the plays of T. S. Eliot and John Whiting, 1945-1954." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0011/MQ36358.pdf.

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9

Burns, Neil M. "Distribution and demographic connectivity in whiting (Merlangius merlangus) : a novel approach using otolith trace elements in continuous assignment." Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/9126/.

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10

Seyhan, Kadir. "Gastric emptying, food consumption and ecological impact of whiting, Merlangius merlangus (L.) in the eastern Irish Sea marine ecosystem." Thesis, Bangor University, 1994. http://e.bangor.ac.uk/4295/.

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Gastric emptying of Sprattus sprattus and Arenicola spp. (gastric lavage) and formulated pellets (X-Ray studies) was investigated in a range of sizes of whiting, Merlangius merlangus fed different meal sizes at different temperatures. Emptying of indigestible solids, barium sulphate spheroids and ballotini were also studied. Additionally stomach contents of whiting sampled from Red Wharf Bay, Eastern Anglesey, UK. were analysed to determine diet composition, diel feeding periodicity and feeding strategy of whiting. Daily and total annual intake of main prey taxa, sprat, sandeel and crab, were
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11

Langsdale, James R. M. "Developmental changes in opacity and visibility of larval Atlantic herring, Clupea harengus L., and their vulnerability to visual predation by whiting, Merlangius merlangus L." Thesis, University of Aberdeen, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333441.

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Features associated with the visibility of larval herring, <i>Clupea harengus</i>, to predators were investigated in the laboratory using larvae reared from artificially fertilised eggs. Herring larvae were reared up to the point at which they metamorphosed into juveniles. Photography and image analysis were used to measure the relative sizes of opaque structures. Lateral body area increased with body length anisometrically (exponent 2.62) and eye area increased at a similar rate (exponent 2.57), but the opaque pigmented lateral area increased as length<SUP>4.41</SUP>. The lateral area of the
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12

Singh-Renton, Susan. "Gadoid feeding: an empirical and theoretical study of factors affecting food consumption and composition in North Sea gadoids, with emphasis on juvenile cod, Gadus morhua (L.) and whiting, Merlangius merlangus (L.)." Thesis, University of Buckingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601444.

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Laboratory experiments were conducted to estimate and compare the gastric evacuation rates, in small cod. Gadus morhua and whiting. Merlangius merlangus (Total length (TL): 20-35 cm), of different types of prey, prey sizes and water temperatures. In addition, the stomach contents of 899 whiting (TL: 18-33 cm), sampled from various parts of the southern and central North Sea , were analysed to determine diet composition, the existence of a diel feeding rhythm and an estimate of the average daily intake of Cranqon vulgaris. Alternative methods for (i) a more direct estimation of relative prey su
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13

Wlasiuk, Jonathan Joseph. "Refining Nature: Standard Oil and the Limits of Efficiency, 1863-1920." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1323373101.

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14

Lauerburg, Rebecca [Verfasser], and Axel [Akademischer Betreuer] Temming. "Governing factors for the size-at-age : the influence of sex, food availability, temperature and fishery on the growth performance of North Sea whiting Merlangius merlangus and cod Gadus morhua / Rebecca Lauerburg. Betreuer: Axel Temming." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1106404696/34.

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15

Adams, Christa. "Bringing "Culture" to Cleveland: East Asian Art, Sympathetic Appropriation, and the Cleveland Museum of Art, 1914-1930." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1447097382.

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16

Lloyd, Ryan Allen. "Remote Sensing of Whitings in the Bahamas." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4361.

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Whitings on both the Great Bahama Bank (GBB) and Little Bahama Bank (LBB) were evaluated using data collected from 2000-2010 by the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments onboard the Terra and Aqua satellites. A semi-objective method was developed to classify whiting patches from other look-alike features using the recently developed Floating Algae Index (FAI) algorithm, an empirical cloud masking algorithm, and a gradient analysis from the 250-m resolution MODIS data. A total of 1,500 images with minimal cloud cover was used to calculate long-term and seasonal tre
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17

Gladwell, Jason Thomas. "Concurrent Whitening and Orthodontic Treatment." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1469.

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The aim was to evaluate whether a whitening system, when used during the final stages of orthodontics, would yield results comparable to whitening alone. Patients were assigned to either the control (n=20) or experimental (n=26) groups. At T1, patients were given a ten day supply of Trèswhite™ by Opalescence®, instructions on use, and initial shade determination was made and photographs were taken. At T2 and T3, shade determination was accomplished and updated photographs were taken. Whitening of the teeth occurred in both groups on average, but significantly more whitening was experie
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18

Bustos-Serrano, Hector. "The Carbonate System in Natural Waters." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/493.

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Reliable measurements of the thermodynamics of the carbonate system are needed to better understand the CO2 system in natural waters. New measurements of the carbonic acid pK1* and pK2* in seawater have been made over a wide range of temperatures (1 to 50°C) and salinities. The commonly used CO2 constants of Mehrbach et al., (1973) were limited to salinities (19 to 43) and temperatures (2 to 35°C). They cannot be used to study estuarine or fresh waters. The results of these measured pK1* and pK2* values are in good agreement with those determined using the Miami Pitzer equations (Millero a
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19

Reeve, Glen M. D. "Sedimentation And Hydrodynamics of Whitianga Estuary." The University of Waikato, 2008. http://hdl.handle.net/10289/2344.

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Whitianga Estuary is a bayhead barrier type estuary located on the east of the Coromandel Peninsula, North Island, New Zealand. The catchment has undergone many land-use changes since pre-European settlement. In some areas of the catchment land-use has changed from native forest to grasslands to forestry and back to pasture. These changes in catchment land-use all contribute to increased sedimentation into the estuary. Development of the estuary itself has also occurred in recent times. Much growth has been focussed around the estuary due to Whitianga town-ship having a large boating community
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20

Santos, Tales dos. "Emergindo das trevas: análise do discurso metal sinfônico em Whitin Temptation." Universidade Presbiteriana Mackenzie, 2017. http://tede.mackenzie.br/jspui/handle/tede/3273.

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Submitted by Giovanna Brasil (1154060@mackenzie.br) on 2017-06-26T20:34:39Z No. of bitstreams: 2 Tales dos Santos.pdf: 2961869 bytes, checksum: 2e86a20c87cf4503017976a08ed5b50c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Paola Damato (repositorio@mackenzie.br) on 2017-06-27T14:29:07Z (GMT) No. of bitstreams: 2 Tales dos Santos.pdf: 2961869 bytes, checksum: 2e86a20c87cf4503017976a08ed5b50c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 2017-06-27T14:29:07Z (GMT). N
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21

Aman, Zaeem. "Efficiency of Fluorescent Whitening Agents in Pigment Coatings." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-14976.

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The objective of this work was to study the addition of fluorescent whitening agents (FWAs) for efficient use on pigment coating of paper substrates with low grammage and the goal was to achieve high optical response by using low amount of FWAs. A commercial light-weight coated (LWC) paper grade was provided by Stora Enso Corbehem Mill and isotropic laboratory sheets were produced at Stora Enso Research Centre using PFI sheet former. Optical properties such as brightness, whiteness and L, a* and b* colour space values were evaluated using Minolta spectrophotometer with D65 illuminant for both
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22

Chen, Ye. "Measurement of white colour containing fluorescent whitening agent." Thesis, University of Leeds, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.713487.

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Various experiments have been conducted to investigate the influence of fluorescent whitening agent (FWA) on aspects of colour evaluation. Large amount of samples were prepared by direct dyeing with various concentration of colorant dyes as well as FWA. These dyed samples, together with high-FWA-content samples provided by third party, were used as stimuli in instrumental measurement by spectrophotometer and tele-spectroradiometer as well as in psychophysical experiment. The influence of FWA on instrumental illumination variation, calibration methods' performance, calibration standards' perfor
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23

Koirala, Kishor. "Anticipatory Electromyogram-Torque Estimation and Effect of Whitening Bandwidth." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-theses/247.

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The electromyogram has numerous applications in engineering and science. One specific application is to model a system for the torque generated by the elbow joint. This application has been long studied and applied in controller designs for artificial prosthetics limbs. Previous research had shown that nonlinear and multiple channel whitened EMG signal models gave the best EMG to torque estimates compared to linear un-whitened models. This thesis describes the methodologies for predicting the torque into the future up to 1 second. Four specific types of finite impulse response models (linear a
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24

Srinivas, Umamahesh Bose N. K. "Thermal image superresolution and higher order whitening of images." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-3979/index.html.

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25

Wong, Ho-hang Anthony. "A randomized controlled trial of home tooth-whitening products." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B3195439X.

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26

Qusti, Najlaa Yusef Mohammed. "Investigating the clinical and laboratory aspects of tooth whitening." Thesis, University of Leeds, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612614.

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Although bleaching is considered a conservative technique, controversy surrounds whether bleaching demineralises or modifies tooth surfaces. Little is known about how bleaching may predispose enamel to subsequent acid challenges or how it affects the adsorption of protective salivary pellicles. Aim: To investigate the effects of bleaching on: susceptibility of hydroxyapatite to subsequent acid attack; on adsorption of salivary proteins and their protective properties and to carry out an in situ study to investigate the impact of a commercial bleaching product on mineral density of human enamel
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27

Wong, Ho-hang Anthony, and 黃浩行. "A randomized controlled trial of home tooth-whitening products." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B3195439X.

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28

Jauhar, Ahmad Shujauddin. "A CMA-FRESH Whitening Filter for Blind Interference Rejection." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/85389.

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The advent of spectrum sharing has increased the need for robust interference rejection methods. The Citizens Broadband Radio Service (CBRS) band is soon to be occupied by LTE waveforms and License Assisted Access (LAA) will have LTE signals coexisting with other signals in the 5 GHz band. In anticipation of this need, we present a method for interference rejection of cyclostationary signals, which can also help avoid interference through better detection of low power co-channel signals. The method proposed in this thesis consists of a frequency-shift (FRESH) filter which acts as a whitening
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29

Schilling, Alexandra. "Reinigungswirkung und Abrasionsverhalten von Whitening-Zahnpasten : eine In-vitro-Studie /." Freiburg i. Br, 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000256381.

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30

Liu, Jian. "Encapsulation of fluorescent whitening agents by cyclodextrins and their application." Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358719.

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31

Dhir, Ritu. "CAUSES OF WHITENING OF IVY GERANIUMS (Pelargonium peltatum)." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-04012008-145127.

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32

Campbell, J. "The fate of fluorescent whitening agents in the aquatic environment." Thesis, University of South Wales, 1990. https://pure.southwales.ac.uk/en/studentthesis/the-fate-of-fluorescent-whitening-agents-in-the-aquatic-environment(4566785a-529e-4e59-873c-757b7aa19a23).html.

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The commercial use of fluorescent whitening agents (FWA' s) in products such as soaps and detergents has resulted in the presence of these compounds in domestic waste waters. A model compound (A) (a possible initial degradation product of a stilbene-s-triazine type FWA) was synthesised and biodegradation studies carried out on this compound in filtered activated sludge solution. During the test period (approximately 6 months) no degradation products were observed. Prior to undertaking biodegradation studies on a purified commercial stilbene-s-triazine FWA, Blankophor REU-P, a method was sought
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33

Wang, He. "Advanced Electromyogram Signal Processing with an Emphasis on Simplified, Near-Optimal Whitening." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-theses/1338.

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Estimates of the time-varying standard deviation of the surface EMG signal (EMGσ) are extensively used in the field of EMG-torque estimation. The use of a whitening filter can substantially improve the accuracy of EMGσ estimation by removing the signal correlation and increasing the statistical bandwidth. However, a subject-specific whitening filter which is calibrated to each subject, is quite complex and inconvenient. To solve this problem, we first calibrated a 60th-order “Universal” FIR whitening filter by using the ensemble mean of the inverse of the square root of the power spectral dens
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34

Steeghs, Lauren. "Morphodynamics of the Whitianga Tidal Inlet and Buffalo Bay, New Zealand." The University of Waikato, 2007. http://hdl.handle.net/10289/2447.

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The primary aim of this study was to investigate the sedimentation processes within Buffalo Bay, particularly within and adjacent to the Whitianga tidal inlet, in order to ascertain reasons for the shoaling at both the inlet, and the identified shallow zone around Pandora Rock. Comparison of historic bathymetries suggests the ebb delta and ebb discharge channel of the Whitianga tidal inlet are rapidly accreting and the ebb tidal discharge channel is gradually migrating northeast towards Whakapenui Point. Accretion rates of up to 25 cm y-1 were calculated in the ebb delta and inlet discharge c
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35

Lütkemeyer, Christian. "Konzeption eines Fractionally-Spaced Entzerrers mit quantisierter Rückkopplung und Noise-Whitening /." Düsseldorf : VDI-Verl, 1999. http://www.gbv.de/dms/bs/toc/270561633.pdf.

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36

Pipatsattayanuwong, Siriporn. "Alternative products from Pacific whiting : fresh surimi and texturized mince." Thesis, 1995. http://hdl.handle.net/1957/27380.

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The major portion of Pacific whiting (PW) is commercialized in the form of frozen surimi. Alternative products for PW were investigated focusing on fresh surimi and texturized meat from PW mince. Fresh surimi is made without additives and kept refrigerated instead of frozen. Texturized meat is a meat-like product made from PW mince through freeze-texturization. Fresh surimi was stored at 5°C and analyzed for its total aerobic plate count (APC), shear stress, shear strain, and color during 7 days storage. Frozen surimi from PW was prepared with 0, 3, 6, and 9% cryoprotectants and was compared w
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37

Yongsawatdigul, Jirawat. "Textural and electrical properties of Pacific whiting surimi under ohmic heating." Thesis, 1996. http://hdl.handle.net/1957/27046.

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Feasibility of ohmic heating to overcome gel-weakening in Pacific whiting surimi was investigated. An ohmic heating apparatus was developed using two rhodium-coated stainless steel electrodes inside a polyvinyl chloride (PVC) tube, a variable transformer, and voltage and current transducers. Rapid heating associated with the ohmic process quickly inactivated endogenous proteinase(s), resulting in significantly high shear stress and shear strain of surimi gels (78% moisture content, 2% NaCl). Degradation of myosin heavy chain (MHC) and actin examined by SDS-PAGE were significantly reduced and c
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38

Wendel, Ari P. "Recovery and utilization of Pacific whiting frame meat for surimi production." Thesis, 1999. http://hdl.handle.net/1957/33265.

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In surimi manufacturing, less than 25% of the total weight of the fish is utilized. This research focused on meat recovery from fish frames, the residual portion of the fish after filleting headed and gutted fish. A new technology, the water jet deboning (WJD) system, was tested. The WJD system uses oscillating high pressure water jet nozzles to recover edible flesh from the frames without breaking the kidney located under the backbone. To evaluate the function of added salt on dewatering and process recovery, the WJD was operated without NaCl (WJD1) and with 0.2% NaCl added to the discharge s
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39

Enr��quez, Andrade Roberto R. "Multiobjective model of the Pacific whiting fishery in the United States." Thesis, 1992. http://hdl.handle.net/1957/35741.

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Pacific whiting (Merluccius productus) is commercially and ecologically one of the most important fishery resources in the Pacific coast of the United States. The fishery is currently going through a period of rapid and profound transformation that could cause a substantial redistribution of benefits among domestic users. Benefits from the Pacific whiting fishery consist of conflicting biological, social, economic and regional objectives. A major management issue is the problem of resource allocation between the domestic offshore and shore-based fleets. Economic analysis of fishery policy base
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40

Benjakul, Soottawat. "Utilization of wastes from Pacific whiting surimi manufacturing : proteinases and protein hydrolysate." Thesis, 1997. http://hdl.handle.net/1957/27453.

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Both liquid and solid wastes from Pacific whiting surimi manufacturing were characterized and value-added products were recovered. A proteinase in surimi wash water (SWW) was determined to be cathepsin L with Mr 54,200 on SDS-substrate gel. Heat treatment and acidification shifted the activity zone to M [subscript r] 39,500. No evidence of calpain, cathepsin B or H activity was found. Cathepsin L from SWW was recovered by ohmic heating (55°C for 3 min), ultrafiltration, and freeze-drying with overall yield of 0.83 g protein/L SWW and 78% recovery of activity. A 5.9 purification fold was achiev
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41

Lopetcharat, Kannapon. "Fish sauce : the alternative solution for Pacific whiting and its by-products." Thesis, 1999. http://hdl.handle.net/1957/26555.

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Pacific whiting and its by-products were good raw materials for high quality fish sauce production. Heat stable and salt activated enzymes were responsible for autolytic activity in Pacific whiting and by-products. According to temperature profiles of raw materials at various salt concentrations, two fermentation temperatures, 35°C and 50°C, were selected and compared at 25% salt under static atmospheric condition. Higher yields and faster production rate were obtained from samples incubated at 50°C. Therefore, the apparent optimum condition for fish sauce fermentation using Pacific whiting an
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42

Piyachomkwan, Kuakoon. "Apparent inhibition of Pacific whiting surimi-associated protease by whey protein concentrate." Thesis, 1993. http://hdl.handle.net/1957/27238.

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Surimi is a seafood product which is used to manufacture restructured products such as artificial crab and lobster. Surimi is produced from fish fillets by washing to remove sarcoplasmic proteins and increase the concentration of myofibrillar proteins, and mixing with cryoprotectants. A valuable attribute of surimi is its ability to form an elastic gel, the gel network being formed by the myofibrillar proteins of fish muscle. It is generally accepted that the quality of surimi gels is influenced by the activity of endogenous protease which acts on the myofibrillar proteins. The proteases in Pa
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43

Wu, JuWen. "Kinetic properties and characterization of purified proteases from Pacific whiting (Merluccius productus)." Thesis, 1994. http://hdl.handle.net/1957/27168.

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Kinetic properties of the two proteases, causing textural degradation of Pacific whiting (Merluccius productus) during heating, were compared and characterized with the synthetic substrate, Z-Phe-Arg-NMec. Pacific whiting P-I and P-II showed the highest specificity on Z-Phe-Arg-NMec, specific substrate for cathepsin L. The K [subscript m] of preactivated P-I and P-II were 62.98 and 76.02 (μM), and k [subscript cat], 2.38 and 1.34 (s⁻¹) against Z-Phe-Arg-NMec at pH 7.0 and 30°C, respectively. Optimum pH stability for preactivated P-I and P-II is between 4.5 and 5.5. Both enzymes showed similar
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44

Weerasinghe, Vasana C. "Characterization of Pacific whiting protease and food-grade inhibitors for surimi production." Thesis, 1995. http://hdl.handle.net/1957/27070.

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Cathepsin B was the most active cysteine proteinase in the Pacific whiting (Merluccius productus) fish fillet, and cathepsin L in surimi when the activities of the most active cysteine proteinases (cathepsin L, B, and H) were compared. Cathepsin L showed maximum activity at 55°C in both fish fillet and surimi, indicating its function in myosin degradation during conventional cooking of fish fillet and surimi. Washing during surimi processing removed cathepsin B and H but not cathepsin L. Autolytic analysis of surimi proteins showed that the myosin was the primary target, while actin and myosin
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45

Peters, Margo Y. "Components of bovine plasma that enhance gel strength in Pacific whiting surimi." Thesis, 1995. http://hdl.handle.net/1957/27077.

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Proteolysis of myofibrillar proteins in Pacific whiting surimi occurs when the 50- 70°C temperature range is reached during standard cooking procedures (e.g. 90°C for 15 min). This proteolytic activity results in the softening of surimi gels. Bovine plasma protein (BPP) is the most effective of the food-grade inhibitors used to prevent this reaction, and enhance gel strength in PW surimi. The objective of this study was to determine the effective components of bovine plasma that enhance gel strength in PW surimi. Five bovine plasma fractions were evaluated for components that contribute to gel
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46

Magnusdottir, Edda. "Physical and chemical changes in stabilized mince from Pacific whiting during frozen storage." Thesis, 1995. http://hdl.handle.net/1957/27109.

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Cryoprotection in stabilized mince from Pacific whiting (Merluccius productus) was investigated by monitoring changes in physical and chemical properties during 32 weeks of frozen storage. The effects of 4 different cryoprotectants were evaluated by torsion test, color analysis, extractability of salt soluble proteins, and formation of dimethylamine (DMA) and 2-thiobarbituric acid (TBA). The quality of the stabilized mince was significantly higher than the control (mince without cryoprotectants) when compared by shear strain, salt soluble proteins, and DMA. The results show that the functional
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47

Tungkawachara, Somjintana. "Characterization of biochemical, functional properties, and market potential of Pacific whiting fish sauce." Thesis, 2003. http://hdl.handle.net/1957/27114.

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Biochemical properties, functional properties, and market potential of Pacific whiting (PW) fish sauce were investigated. Biochemical properties of fish sauce made from whole fish (W) and a mixture (1:1) of whole fish and surimi byproducts (WB) were compared. Market potential was evaluated through phone interviews and consumer panelists. Proteolysis was primarily affected by cathepsin B-like and L-like enzymes. Acidic pH (4-5) with low salt concentration (15-20%) provided a greater degree of hydrolysis (DH), total nitrogen, and amino nitrogen content in PW fish sauce compared to the traditiona
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48

Chang-Lee, Maria Virginia. "The production of surimi from Pacific whiting (Merluccius productus) and evaluation of kamaboko gels." Thesis, 1988. http://hdl.handle.net/1957/27169.

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Yield, proximate composition, and proteolytic activity were determined in each unit operation during production of surimi from Pacific whiting. Preliminary studies involved the addition of protein adjuncts such as egg white (EW), whey protein concentrate (WPC), and soy protein isolate (SPI), at different levels, to kamaboko gels in order to select the main protein for further study. SDS-gel electrophoresis was performed to evaluate the effectiveness of egg white as a protease inhibitor in kamaboko gels. Yields obtained from planked fish (42.4%) and minced flesh (35.7%) agree with those values
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49

Chung, Yun-Chin. "Effect of salt and pH on surimi gels made from Pacific whiting (Merluccius productus)." Thesis, 1993. http://hdl.handle.net/1957/27181.

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The effect of salt (0, 0.9, 1.7, 2.5%) and pH (range 4 to 10) on surimi gels made from Pacific Whiting (Merluccius productus) was investigated. Gel-forming ability was measured by the torsion test. In general, surimi gels increased in gel strength with increased pH. Breaking shear stress increased to a greater degree than breaking shear strain above pH 7.0. The increase in gel strength was greater at higher pHs for gels made without salt than those made with salt. At neutral pH, the salted surimi showed greater gel forming abilities than the unsalted whiting surimi. Poor gels were formed at lo
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50

Peters, Gregory J. "Determination of quality parameters for the Pacific whiting fishery using neural network and induction modeling." Thesis, 1995. http://hdl.handle.net/1957/34581.

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Pacific whiting, with a maximum sustainable yield between 150,000 and 250,000 metric tons, is the largest stock of fish found off Oregon. The majority of the fish are processed into surimi. Hundreds of variables could potentially affect surimi quality (gel strength). Alternative harvesting and processing input combinations, as well as product quality attributes and their influences, were collected for the 1992-94 Pacific whiting seasons. This data was combined with other research on Pacific whiting quality to develop a comprehensive model of the Pacific whiting fishery. Neural network and indu
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