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Unionida musslor (stormusslor) är en djurgrupp som kan ha positiv påverkan på ekosystemfunktioner i vattendrag och ökar den biologiska mångfalden. Musslorna absorberar föda genom filtrering av vattenmassor, vilket genererar en bättre vattenkvalitet och ger mat till andra bottendjur. Syftet med denna studie var att undersöka en av våra svenska stormusslor flodpärlmusslan (Margaritifera margaritifera), och om det fanns något samband mellan musselbankar och bottenfauna. Provtagning av bottenfauna skedde i Vasslabäcken, Örebro län. 54 prover togs totalt och 27 av dem togs vid musselbankar medan resterande 27 var kontroll utanför musselbankar. Studien visade ingen signifikant skillnad i den totala bottenfaunans täthet i musselbankar jämfört med kontrollområden utanför musselbankar. Däremot fanns en signifikant högre täthet av nattsländor i kontrollerna än i musselbankarna, medan det inte fanns några skillnader i täthet mellan kontroller och musselbankar för några andra djurordningar. Det fanns även fler ordningar utanför musselbankar än i musselbankar, men antalet individer var så få att inga långtgående slutsatser kan dras. För att vidare undersöka musslors påverkan på flora och fauna kan man undersöka fler år och säsonger under året, samt använda sig av en mer experimentell design. / Unionidea mussels (large mussels) are a group of animals that can have a positive impact on ecosystem functions in watercourses and increase biodiversity. The mussels absorb food by filtering water masses, which generates a better water quality and provides food for other benthic animals. The purpose of this study was to investigate one of our swedish large mussels the freshwater pearl mussel (Margaritifera margaritifera), and whether there was any connection between musselbanks and benthic fauna. Sampling of benthic fauna took place in Vasslabäcken, Örebro region. A total of 54 samples were taken and 27 of them were taken at musselbanks while the remaining 27 were controls outside musselbanks. The study showed no significant difference in the density of the total benthic fauna in musselbanks compared with control areas outside musselbanks. On the other hand, there was a significantly higher density of moths in the controls than in the musselbanks, while there were no differences in density between controls and musselbanks for any other animal orders. There were also more schemes outside musselbanks than in musselbanks, but the number of individuals was so small that no far-reaching conclusions can be drawn. To further investigate the impact of mussels on flora and fauna, you can investigate more years and seasons during the year, and use a more experimental design.

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Pink heelsplitter (Potamilus alatus) mussels collected from Kentucky Lake, TN were held at two bottom locations (0.6 m, 2.5 m) and suspended in pocket nets (at depth about 1.0 - 1.5 m) in a pond at the Freshwater Mollusk Conservation Center (FMCC), Virginia Tech, for 1 yr. Survival of mussels after 1 yr was significantly different, with poorest survival (30 %) in the bottom of the deep end; and no difference between the shallow end (83.3 %) and the suspended pocket nets (63.3 %). Survival of mussels was inversely related to water temperature (r = - 0.72); lowest monthly survival occurred in summer, resulting in a significant difference among the three locations with a similar trend after 1 yr. The glycogen reserves of mussels in captivity for 1 yr differed by pond location, higher in mussels at the shallow end than those in suspended pocket nets and at the deep end. Therefore, the shallow end of pond was more suitable for holding mussels long-term, while the suspended pocket nets are an alternative site for holding captive mussels. Additionally, dissolved oxygen was very low at the deep end (1.9 mg/L) in summer, while it was adequate (range from 5.7 - 6.4 mg/L) at the location of suspended pocket nets, and 5.0 mg/L at the shallow end (24.7 °C). Data for 40 specimens indicated that sexual dimorphism in valve shape occurred in P. alatus. Female mussels had a significantly (p < 0.0001) greater ratio of height (H) to length (L) (52.3 %) and width (W) to length (31.8 %) than males (H/L: 48.4 %; W/L: 28.8 %), respectively. The posterior ends were somewhat round to oval in males and bluntly squared or truncated in females. Female mussels were more inflated than males. These morphological differences can be used to distinguish females from males during field collections. The red drum (Sciaenops ocellatus) was identified as a new fish host for P. alatus, as 48 active juveniles were transformed by this species, which is not a natural host. Four glochidia were observed on the fins versus 2,307 on the gills of five red drum. Freshwater drum also was verified as a suitable host fish, but black crappie (Pomoxis nigromaculatus), banded sculpin (Cottus carolinae), yellow perch (Perca flavescens) and nile tilapia (Oreochromis nilotica) did not support transformation of glochidia to juveniles. Survival and growth of propagated juveniles of P. alatus were assessed regarding the effects of algal diets (Nannochloropsis oculata and Neochloris oleoabundans) and substrate type (fine sediment and sand). Overall, survival of juveniles after 17 d ranged from 23.8 to 66.8 %, with mean of 48.5 %; however, survival dramatically declined during the next 2 wk period to only 5.8 % (range of 1.8 to 7.8 %). Survival rate of juveniles was significantly different (p = 0.027) between substrates, but not in diets (p = 0.520), with the lowest survival rate of 23.8 % in sand substrate and fed N. oculata. Juveniles grew faster in fine sediment (23.0 % increase in shell length) than in sand substrates (10.5 % increase) (p = 0.002). Moreover, mean growth rate of juveniles was 4.9 &#956;m/d during the first 2 wk, but decreased to 0.2 &#956;m/d in the remaining 2 wk. Therefore, fine sediments seemed more appropriate for juvenile culture compared to sands. Both species of algae, N. oculata and N. oleoabundans, can be used to feed juveniles in the laboratory. Adult pink heelsplitters were used to study feasibility of pearl production by using two surgical implants (non-nucleated implant = NNI, and image pearl implant = IPI) in two ponds of different nutrient levels (FMCC pond and Duck pond). NNI and IPI pearls with purple or purplish luster were successfully produced in P. alatus. Pearl weight was not significantly different (p = 0.562) between two ponds. No differences in monthly survival rates of mussels were observed in either pond (p = 0.051), or among mussels with surgical implants and the no-surgery control mussels (p = 0.881). Consequently, P. alatus can be considered a potential species for producing purple pearls in pearl culture. Additionally, mussels in the Duck pond had higher (p < 0.0001) glycogen levels, similar to those in wild collected mussels, than those in the FMCC pond, indicating that this pond environment may be more suited for holding implanted mussels in captivity. / Master of Science

Zhao, Bo. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 68-73). / Abstracts in English and Chinese. / Abstract --- p.I / Acknowledgement --- p.III / Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- Background: PRD and YRD --- p.3 / Chapter 1.1.1 --- "PRD, YRD and China" --- p.3 / Chapter 1.1.2 --- Simple profile of PRD and YRD: a city-level observation --- p.9 / Chapter 1.2 --- Objectives of the study --- p.13 / Chapter 2. --- Literature Review --- p.16 / Chapter 2.1 --- Overview of TFP measurement --- p.16 / Chapter 2.2 --- TFP in China --- p.21 / Chapter 2.3 --- China's inward FDI and its importance --- p.25 / Chapter 2.4 --- The relationship between FDI and TFP --- p.31 / Chapter 3. --- Methodology --- p.35 / Chapter 3.1 --- Research hypotheses --- p.35 / Chapter 3.2 --- Model --- p.35 / Chapter 3.3 --- Data and measurement --- p.40 / Chapter 3.3.1 --- Data and data sources --- p.40 / Chapter 3.3.2 --- Measurement of variables --- p.41 / Chapter 4. --- Statistical Results --- p.44 / Chapter 4.1 --- Estimation of total factor productivity: regression results from OLS and panel estimation --- p.44 / Chapter 4.1.1 --- Cobb-Douglas production function: panel estimation --- p.45 / Chapter 4.1.2 --- TFP by cross sections --- p.48 / Chapter 4.1.3 --- TFP through time (1978-2004) --- p.49 / Chapter 4.2 --- Relationships of TFP and FDI and other variables: Pearson correlation analysis --- p.53 / Chapter 4.3 --- Effects on TFP: multiple regression results --- p.56 / Chapter 4.3.1 --- Effects of FDI on TFP --- p.58 / Chapter 4.3.2 --- Effects of R&D on TFP --- p.59 / Chapter 4.3.3 --- Effects of human capital on TFP --- p.60 / Chapter 5. --- Conclusion --- p.63 / References --- p.68

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published_or_final_version / Geography and Geology / Master / Master of Arts

by Leung Kin-chung Jonathan, Yau Cheong-yin Albert. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1990. / Bibliography: leaf 81. / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.iv / LIST OF TABLES --- p.vi / ACKNOWLEDGMENTS --- p.vii / Chapter I. --- INTRODUCTION --- p.1 / Problem Identification --- p.1 / Company Background of Mobil --- p.1 / SWOT Analysis of Mobil in the China Market --- p.3 / Chapter II. --- RESEARCH METHODOLOGY --- p.8 / The Research Scope --- p.8 / Methodology --- p.9 / Secondary Data --- p.10 / Primary Data --- p.10 / Questionnaire --- p.10 / Limitations --- p.13 / Chapter III. --- FINDINGS - THE INDUSTRY --- p.14 / The Local Economy and Market --- p.14 / Shenzhen --- p.14 / Pearl River Delta Area except Shenzhen --- p.17 / Competitive Situations --- p.19 / Product Markets and Mobil's Corresponding Positions --- p.22 / Chapter IV. --- FINDINGS - CUSTOMERS --- p.33 / Mail Questionnaire Findings --- p.33 / Personal In-depth Interview Findings --- p.42 / Chapter V. --- RECOMMENDATIONS - MARKETING STRATEGIES FOR MOBIL --- p.55 / Overall Positions of Mobil's Product Portfolio in the BCG Matrix --- p.55 / Marketing Plans of Individual Product Lines --- p.57 / Action Plan --- p.66 / APPENDICES --- p.67 / BIBLIOGRAPHY --- p.81

by François Soulard. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves 225-253). / Abstract --- p.ii / List of maps --- p.vi / List of tables --- p.vii / List of charts --- p.ix / List of appendices --- p.xi / References and acronyms --- p.xii / Acknowledgements --- p.xiii / Chapter Chapter 1 ： I --- Introduction --- p.1 / Introduction --- p.1 / Research area --- p.2 / Modernization in China --- p.3 / Zhujiang Delta： a definition --- p.5 / Hong Kong: bonded with Zhujiang --- p.11 / Research issues --- p.15 / Research objectives --- p.20 / Research axioms --- p.20 / Research methodology --- p.23 / Chapter Chapter 2: --- Industrial restructuring --- p.24 / The capitalist production model --- p.24 / The production model --- p.25 / Capital accumulation --- p.29 / Crisis construct --- p.36 / The restructuring of industrial capitalism --- p.41 / Manufacturing development --- p.41 / From rigidity to flexibility --- p.45 / Division of labour --- p.50 / Spatial division of labour --- p.52 / International division of labour --- p.57 / The cost factor of labour --- p.61 / Industrial restructuring --- p.64 / Conclusion： Restructuring modelled --- p.66 / Chapter Chapter 3： --- Restructuring analysis --- p.70 / Introduction --- p.70 / Restructuring tendencies --- p.71 / Scale analysis --- p.71 / Sectoral analysis --- p.86 / Restructuring analysis --- p.105 / Conclusion --- p.135 / Chapter Chapter 4： --- Urbanization in Zhujiang Delta --- p.138 / Introduction --- p.138 / City-based urbanization --- p.138 / Region-based urbanization --- p.141 / Zhujiang Development --- p.145 / Rural agricultural reform --- p.145 / Rural industrial reform --- p.155 / Foreign invested development --- p.162 / Zhujiang Delta region-based urbanization --- p.173 / Designated towns development --- p.175 / Functional capital and industrialization --- p.183 / Zhujiang megapole --- p.191 / Conclusion --- p.197 / Chapter Chapter 5: --- Conclusion： industrial restructuring and territorial development --- p.199 / Transplantation and rural reforms --- p.199 / Transplant --- p.201 / Hong Kong industries and rural reforms in China --- p.205 / Economic diversification in Hong Kong --- p.207 / The collapse of the production/exchange divide --- p.208 / The development of the Zhujiang megapole --- p.211 / The significance for development in China --- p.213 / The value of compensation trade --- p.214 / A regional secondary circuit of capital --- p.217 / Concluding remarks and prospects --- p.218 / Research agenda --- p.222 / Bibliography --- p.225 / Cited references: --- p.225 / Other readings: --- p.236