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Dissertations / Theses on the topic 'Tropical malaria'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Adetiba, Adedamola Seun. "The tropical environment and malaria in southwestern Nigeria, 1861 – 1960." Thesis, Rhodes University, 2019. http://hdl.handle.net/10962/76564.

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This thesis is a social history of malaria in southwestern Nigeria. It contributes to the burgeoning literature in the historiography of medicine, specifically the medicine and empire debate. Key to the issues raised in this thesis is the extent to which the limitations in colonial medical policies, most especially malaria control programmes, inspired critical and ingenious responses from African nationalists, doctors, patients, research volunteers, and indigenous medical practitioners. Challenged by a wide range of diseases and a paucity of health facilities and disease control schemes, Afric

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2

Hill, Jennifer. "The development of multivaccine delivery systems for tropical diseases." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310135.

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3

Pirker-Krassnig, Daniela Karoline Polrat Wilairatana. "Hematological changes in patients with severe malaria from Bangkok Hospital for tropical diseases /." Abstract, 2006. http://mulinet3.li.mahidol.ac.th/thesis/2549/cd388/4838786.pdf.

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Thematic Paper ((M.C.T.M. Clinical Tropical Medicine))--Mahidol University, 2006.<br>LICL has E-Thesis 0012 ; please contact computer services. LIRV has E-Thesis 0012 ; please contact circulation services.

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4

Yacoub, Jeanine. "Synthesis of Agents for the Treatment and Analysis of Tropical Diseases." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6441.

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Toxoplasmosis is an opportunistic disease caused by the protozoan parasite Toxoplasma gondii. The parasite is usually staved off by a healthy immune system and remains dormant in the body. In immunocompromised patients, the parasite can become active and spread throughout the body causing symptoms such as encephalitis, cognitive disorders, seizures, and death. Combination drug therapy is the usual treatment for toxoplasmosis; however, patients suffer from problems of intolerance, allergic reactions, and cytotoxicity. In an effort to identify new drug targets for toxoplasmosis, a series of comp

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5

Котелевская, В. И., та Д. А. Кузнецова. "Особенности течения и диагностики завозной тропической малярии". Thesis, Сумский государственный университет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/48005.

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На сегодняшний день 106 стран являются эндемичными по малярии, соответственно половина всего населения земли подвержена риску данного заболевания. Наиболее опасна - тропическая малярия, от которой ежегодно умирает около 2 миллионов человек. Цель работы. Определить особенности течения и диагностики завозной тропической малярии.

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Троцька, Ірина Олександрівна, Ирина Александровна Троцкая, Iryna Oleksandrivna Trotska та ін. "Випадок завозної тропічної малярії в м. Конотопі". Thesis, Видавництво СумДУ, 2000. http://essuir.sumdu.edu.ua/handle/123456789/22034.

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7

Ma, Wai Sheung. "Natural Product Drug Discovery against Tropical Diseases." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3224.

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This dissertation describes the isolation of secondary metabolites from natural origins through a series of chromatographic techniques and spectrometric characterization in the effort of drug discovery. The isolated compounds obtained were used as drug leads against tropical diseases, namely malaria and leishmaniasis. While first chapter offers an introduction on the use of a natural product by itself as an effective therapeutic and its role on inspiring the discovery of new drugs, the later chapters will concentrate on isolation and characterization of bioactive natural products from an Antar

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8

Escallon, Herkrath Camilo. "Reproductive physiology, avian malaria, and the cloacal microbiome in tropical Rufous-collared Sparrows (Zonotrichia capensis)." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/77854.

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Life-history strategies are adaptations in behavior, physiology, and anatomy that influence survival and reproductive success. Variation in life-history strategies is often determined by adaptations to environmental conditions and trade-offs with sexually-selected signals. One of the aspects controlling life-history trade-offs is the endocrine system. Testosterone is a hormone that mediates several key aspects of male reproduction, yet little is known about the causes and consequences of variation in testosterone. Using rufous-collared sparrows (Zonotrichia capensis), a Neotropical songbird wi

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9

Ongore, Dismas. "Risk factors for infection and disease with the malaria parasite in children less than five years of age in Kisumu District Nyanza Province Kenya." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385095.

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10

Котелевская, В. И., та Д. А. Кузнецова. "Особенности течения и диагностики завозной тропической малярии". Thesis, Сумский государственный университет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/44980.

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Актуальность. На сегодняшний день 106 стран являются эндемичными по малярии, соответственно половина всего населения Земли подвержена риску данного заболевания. Наиболее опасна- тропическая малярия, от которой ежегодно умирает около 2 миллионов человек.

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11

Shah, Shivang Satish. "Examining the relationship between genetic variation at G6PD and severe malaria." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:933063af-9cd9-4f74-94c9-55ef2db28551.

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Glucose-6-phosphate dehydrogenase (G6PD) deficiency, a common heritable trait whose prevalence mirrors geographic patterns of historic malaria endemicity, is thought to confer a selective advantage owing to partial protection conferred against malaria. Direct evidence supporting this malaria protection hypothesis in the form of clinical association studies remains controversial, however, as conflicting results have been reported with respect to the strength and specificity of a protective effect, if any, conferred to carriers of G6PD deficiency-associated alleles. This thesis examines genetic

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12

Sihuincha, Maldonado Moisés Guido, and Prado Eduardo Demetrio Matos. "Estudio de la eficacia terapéutica del tratamiento artesunato - mefloquina para malaria por Plasmodium falciparum no grave en Loreto." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2007. https://hdl.handle.net/20.500.12672/11874.

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El documento digital no refiere asesor<br>Determina la eficacia del esquema de tratamiento antimalárico combinado de artesunato más mefloquina contra la malaria por Plasmodium falciparum no complicado en la región de Loreto, Perú. Determina la respuesta parasitológica y clínica de pacientes con malaria por P. falciparum no complicada al nuevo esquema de tratamiento artesunato más mefloquina. Determina el nivel de resistencia inicial del P. falciparum a las drogas artesunato y mefloquina. Busca conocer la tasa del efecto gametocida del artesunato en el esquema de tratamiento artesunato más mefl

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13

Ham, Daniel. "The management of malaria and leprosy in Hong Kong and the International Settlement of Shanghai, 1880s-1940s." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/246451.

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This dissertation contrasts Hong Kong’s and the International Settlement’s management of malaria and of leprosy from the 1880s through the 1940s. This dissertation has two main objectives. Firstly it examines the historical management of malaria and leprosy within specific geo-political contexts. By focusing on British possessions in coastal China, this project explores the production of colonial medical knowledge within a transnational context, presents new and original analyses of the local history of the disease, and bridges the historiography of the British Empire and that of modern China.

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14

Douglas, Nicholas Martin. "Morbidity and mortality due to Plasmodium vivax malaria in Papua, Indonesia and its control using antimalarial drugs." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:3f758304-a3f6-4bfe-aeca-fcb135749267.

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Plasmodium vivax malaria threatens nearly half the world’s population. This relapsing disease may be more severe than previously recognised and is proving refractory to current malaria control measures. This thesis aimed to describe the burden of anaemia and mortality attributable to vivax malaria in Southern Papua, Indonesia, an area endemic for multidrug-resistant P. vivax and P. falciparum, and to determine the potential of currently available antimalarial drugs to reduce transmission of P. vivax in co-endemic regions. Approximately 0.5 million uniquely identified clinical records from pati

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15

Birkholtz, Lyn-Marie. "Molecular characterisation of the ornithine decarboxylase gene of the human malaria parasite, plasmidium falciparum." Diss., University of Pretoria, 1998. http://hdl.handle.net/2263/37299.

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Malaria is one of the most serious tropical infectious diseases affecting mankind. The prevention of the disease is hampered by the increasing resistance of the parasite to existing chemotherapy and -prophylaxis drugs. The need for novel therapeutic targets and drugs is therefore enormous and the understanding of the biochemistry of the parasite is imperative. The aim of this study was the identification and molecular characterisation of the eDNA of one such metabolic target protein, ornithine decarboxylase (ODC), in the human malaria parasite P. falciparum. The P. falciparum ODC eDNA w

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Akech, Samuel Owuor. "Haemodynamic status and management of shock in children with severe febrile illness." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:93ce62fd-2137-4063-bb27-5443a5c7e8bc.

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Most in-hospital deaths secondary to infections in under-five deaths within sub-Saharan Africa (SSA) occur in the initial 24 hours of admission and shock has been identified as a major risk factor for the early deaths. However, controversies exist on the appropriate clinical diagnosis of shock, choice of ideal fluid for resuscitation (crystalloid or colloid), and safety of fluid resuscitation in severe malnutrition or severe malaria. This thesis investigates these aspects and also reviews the evidence base of current paediatric fluid resuscitation guidelines for children (aged >60 days and ≤12

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17

Pearson, Frances E. "Transcutaneous delivery of T cell-inducing viral vector malaria vaccines by microneedle patches." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:2155c639-bcc8-49e0-b415-a5d353aacba3.

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There is an urgent need for improvements to existing vaccine delivery technologies to run parallel with the development of new-generation vaccines. The burdens of needle-based immunisation strategies are exacerbated by poor resource provision in such areas as sub-Saharan Africa, where annual malaria mortality stands at 860,000. Needle-free delivery of vaccine to the skin holds promise for improved immunogenicity with lower doses of vaccine, in addition to significant logistical advantages. Various methods have been described for the transcutaneous delivery of vaccines, including the use of mic

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18

Prapansilp, Panote. "Molecular pathological investigation of the pathophysiology of fatal malaria." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:e966a2f2-a37d-4586-b09e-2bb616e5dce2.

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Malaria remains one of the world's major health problems, especially in developing countries. A better understanding of the pathology and pathophysiology of severe malaria is key to develop new treatments. Different approaches have been used in malaria research including the in vitro co-culture models with endothelial cells and both murine and simian animal models. However these are open to controversy due to disagreement on their representativeness of human disease. Using human post-mortem tissue in malaria research is another important approach but is practically challenging, limiting the av

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19

Maude, Richard James. "Malaria elimination modelling in the context of antimalarial drug resistance." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:3a5321ca-f8fc-45b2-a002-363d982d3cc5.

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Introduction: Antimalarial resistance, particularly artemisinin resistance, is a major threat to P. falciparum malaria elimination efforts worldwide. Urgent intervention is required to tackle artemisinin resistance but field data on which to base planning of strategies are limited. The aims were to collect available field data and develop population level mathematical models of P. falciparum malaria treatment and artemisinin resistance in order to determine the optimal strategies for elimination of artemisinin resistant malaria in Cambodia and treatment of pre-hospital and severe malaria in Ca

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20

Oteng, Eugene K. "Discovery of a conserved Plasmodium antigen on the surface of malaria-infected red blood cells." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:592769fc-2628-4c6e-9a68-99060fb8c091.

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During its intraerythrocytic stages (IE), Plasmodium falciparum, the causative agent of the deadliest human malaria, remodels the host red cell membrane with a poorly defined assortment of parasite-encoded proteins that undergo antigenic variation. Despite the requirement for immunologic stealth, exported parasite proteins also mediate strain-independent functions such as endothelial sequestration that are critical for parasite survival and pathogenesis. This thesis explores the hypothesis that P. falciparum displays novel structurally conserved proteins on the IE surface and these proteins m

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21

Neal, Aaron T. "Identifying genetic determinants of impaired PfEMP1 export in Plasmodium falciparum-infected erythrocytes." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:0cc3f09c-9178-448b-92f8-8f9564398585.

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The virulence of Plasmodium falciparum is largely attributed to the ability of asexual blood-stage parasites to cytoadhere to the microvascular endothelium of the human host. This pathogenic behavior is mediated by the primary parasite virulence factor P. falciparum erythrocyte membrane protein 1 (PfEMP1), an understanding of which is crucial to develop interventions to ameliorate the morbidity and mortality of P. falciparum malaria. The work presented in this thesis describes the application of a phenotype-to-genotype experimental approach to identify novel parasite proteins involved in the t

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22

Santos-Ciminera, Patricia Dantas Ciminera Patricia Dantas Santos Santos Patricia. "Molecular epidemiology of epidemic severe malaria caused by Plasmodium vivax in the state of Amazonas, Brazil /." Download the dissertation in PDF, 2005. http://www.lrc.usuhs.mil/dissertations/pdf/Santos2005.pdf.

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23

Mwai, Leah Wanjiru. "The activities of various antimalarial drugs on Plasmodium falciparum isolates in Kilifi Kenya and studies on mechanisms of resistance." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:d90f828a-63d4-48aa-9781-3ca2de55e451.

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Drug resistance is a significant challenge in the fight against malaria. Importantly, reduced efficacy has been reported against artemether (ATM)/Lumefantrine (LM) (LM-ATM), amodiaquine (AQ)/artesunate (AS) (AQ-AS), two important combination treatment regimens in Africa, and against piperaquine (PQ), a drug which has been evaluated as a potential alternative in Africa, in combination with dihydroarteminisin (DHA). Chloroquine (CQ) resistance in P.falciparum is associated with two main transporters PfCRT and PfMDR1. I investigated the mechanisms of resistance to PQ, LM and AQ, with the overall

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24

Daly, Benjamin. "Avian malaria in the montane tropics." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:70284964-36b6-4135-98d4-4ec8d22c8b45.

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Understanding the unequal distribution of life on earth is a fundamental goal of ecology and evolutionary biology. Past efforts to explain large-scale patterns in diversity have tended to focus on two broad classes of explanation, one invoking the importance of abiotic factors (i.e. climate and vegetation) and the other biotic (i.e. competition); but neither has proven entirely adequate. Parasites are a major but poorly understood component of life that may offer some answers. Yet despite widespread theoretical support and some empirical evidence, the role of parasites in explaining patterns i

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Reinhardt, Christina Kimberly. "Funktionelle Analysen der Plasmodium falciparum erythrocyte membrane protein-1 (PfEMP1)- Domäne DBL3 gamma." [S.l. : s.n.], 2006.

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26

Kloprogge, Frank Lodewijk. "Pharmacokinetics and pharmacodynamics of antimalarial drugs in pregnant women." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:79ce1a37-3ba2-45e4-9f80-0692a66837f1.

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Malaria is the most important parasitic disease in man and it kills approximately 2,000 people each day. Pregnant women are especially vulnerable to malaria with increased incidence and mortality rates. There are indications that pregnancy alters the pharmacokinetic properties of many antimalarial drugs. This is worrisome as lower drug exposures might result in lowered efficacy and lower drug exposures can also accelerate the development and spread of resistant parasites. The aim of this research was to study the pharmacokinetics and pharmacodynamics of the most commonly used drugs for the tre

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27

Zoller, Thomas [Verfasser]. "Epidemiologie und Behandlung der importierten Malaria tropica / Thomas Zoller." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1176705938/34.

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28

Oppenheimer, Stephen James. "Iron deficiency and susceptibility to infection : a prospective study of the effects of iron deficiency and iron prophylaxis in infants in Papua New Guinea." Thesis, University of Oxford, 1987. http://ora.ox.ac.uk/objects/uuid:1891d054-1564-47f5-b2e0-b6da5f60e996.

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Investigation of the relationship between iron deficiency, iron supplementation and susceptibility to infection, was suggested by the author's initial observations of an association of anaemia with serious bacterial infections in infancy in Papua New Guinea. The bulk of previous longitudinal clinical intervention studies in infancy showed beneficial effects of iron supplementation. However, defects of control and design and recording in these studies and contradictory anecdotal reports left the question unresolved. A prospective, placebo-controlled, randomised, double-blind trial of iron proph

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29

Knobloch, Andreas. "Therapie der unkomplizierten Malaria tropica mit Chloroquin und Sulfadoxin-Pyrimethamin bei Kindern in Tamale, Ghana." Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976577437.

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Mabunda, Samuel José Alvés. "Epidemiology and the Burden of malaria in Mozambique, The." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/2849.

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Malaria occurs mostly in the tropical regions of the world. Sub-Saharan Africa is the area most affected. The occurrence of a very efficient mosquito vectors Anopheles gambiae complex and Anopheles funestus group sustain high transmission of the Plasmodium falciparum, the most predominant and deadly malaria parasite species. Local weather conditions are appropriate and often transmission occurs throughout the year. <br/>Limited resources and socio-economic instability constitute the major factors impeding efficient malaria control activities. <br/>The worldwide malaria eradication programme ca

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31

SATGE, DIDIER. "Pathologie d'importation dans le service des maladies exotiques de l'hopital houphouet boigny (marseille) : a propos d'un an d'hospitalisation." Aix-Marseille 2, 1992. http://www.theses.fr/1992AIX20109.

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Lapasse, Yannick. "Bilan des activites d'hospitalisations dans le service de clinique des maladies exotiques de l'hopital felix houphouet-boigny de marseille, du 1er juillet 1987 au 30 juin 1989." Aix-Marseille 2, 1990. http://www.theses.fr/1990AIX20285.

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33

Azim, Amir Affan Abdul. "Growth ring formation of selected tropical rainforest trees in Peninsular Malaysia." Master's thesis, Kyoto University, 2014. http://hdl.handle.net/2433/188776.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第18338号<br>農博第2063号<br>新制||農||1023(附属図書館)<br>学位論文||H26||N4845(農学部図書室)<br>31196<br>京都大学大学院農学研究科森林科学専攻<br>(主査)教授大澤晃, 教授髙部圭司, 教授北山兼弘<br>学位規則第4条第1項該当

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Kleiner, Stefani [Verfasser], and Hinnak [Akademischer Betreuer] Northoff. "Experimentelle Untersuchung des pathogenen Adhäsionsvorganges der Malaria tropica mit Schwingquarzsensoren / Stefani Kleiner ; Betreuer: Hinnak Northoff." Tübingen : Universitätsbibliothek Tübingen, 2011. http://d-nb.info/1161464689/34.

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Hoffmann, Steffi [Verfasser], and Gerd-Dieter [Akademischer Betreuer] Burchard. "Beeinträchtigung der Herzfunktion von Kindern mit schwerer Malaria tropica / Steffi Hoffmann. Betreuer: Gerd-Dieter Burchard." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2013. http://d-nb.info/1037822293/34.

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Hartshorne, James Byng. "Assessing the influence of digital terrain model characteristics on tropical slope stability analysis." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336822.

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Nik, Abdul Rahim H. "The effects of selective logging methods on hydrological parameters in Peninsular Malaysia." Thesis, Bangor University, 1990. https://research.bangor.ac.uk/portal/en/theses/the-effects-of-selective-logging-methods-on-hydrological-parameters-in-peninsular-malaysia(9ed5e3d1-33ab-4cb1-91b0-7c043891921f).html.

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An experimental forest watershed, consisting of three small catchments at Berembun, Negeri Sembilan, in Peninsular Malaysia has been monitored from 1979 to 1987. Adequate instruments were installed for continuous collection of hydrologic and climatic data. The calibration and post-treatment phases lasted for three and four years respectively. Two types of treatments were imposed -namely commercial selective logging and supervised selective logging in catchment 1 and catchment 3 whilst catchment 2 remained as a control. Pertinent logging guidelines were prescribed and assessed in C3 in terms of

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Prescott, Graham William. "Effects of land-use, landscape configuration, and management practice on biodiversity in tropical agricultural landscapes." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709023.

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Artières, Jérôme. "Prophylaxie des maladies tropicales chez les expatriés et les touristes français au Vietnam." Montpellier 1, 1999. http://www.theses.fr/1999MON11147.

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Fürst, Svenja [Verfasser], and Jakob [Akademischer Betreuer] Cramer. "Risikofaktoren afrikanischer Kinder für eine späte Anämie nach mit Artesunat behandelter Malaria tropica / Svenja Fürst ; Betreuer: Jakob Cramer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://d-nb.info/1202925642/34.

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Fürst, Svenja Verfasser], and Jakob P. [Akademischer Betreuer] [Cramer. "Risikofaktoren afrikanischer Kinder für eine späte Anämie nach mit Artesunat behandelter Malaria tropica / Svenja Fürst ; Betreuer: Jakob Cramer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://d-nb.info/1202925642/34.

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Ho, Wai-hong, and 何偉康. "Biodiversity, ecological and ultrastructural observations of Fungi on wood submerged in tropical streams." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31237010.

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Still, Margaret Jean. "Population dynamics and spatial patterns of Dipterocarp seedlings in a tropical rain forest." Thesis, University of Stirling, 1993. http://hdl.handle.net/1893/26682.

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Population dynamics and spatial pattern of dipterocarp seedlings were investigated in lowland dipterocarp forest in Danum Valley Conservation Area, Sabah, East Malaysia. Seedlings (< 10 cm gbh) were enumerated in two areas (2.0 and 0.48 ha) within the tree enumeration plots established by the University of Stirling project, and surveyed over 22 months. Seedlings of the major canopy and emergent dipterocarps in the area were common: Shorea johorensis (Red Meranti); S. argentifolia, S. leprosula, S. parvifolia (Light Red Merantis, LRM) and Parashorea maleanonan, all light demanding species; S. f

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Breil, Saskia [Verfasser], and Benjamin [Akademischer Betreuer] Mordmüller. "In vivo Kinetik des Plasmodium falciparum histidine-rich protein 2 bei Patienten mit unkomplizierter Malaria tropica / Saskia Breil ; Betreuer: Benjamin Mordmüller." Tübingen : Universitätsbibliothek Tübingen, 2016. http://d-nb.info/1198120819/34.

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Ivory, Sarah Jean. "Vegetation and Climate of the African Tropics for the Last 500,000 Years." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/293752.

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In the last few decades, we have been witness to unprecedented changes in precipitation and temperature. Such alterations to our climate system have important implications for terrestrial ecosystems that billions of people depend on for their livelihood. The situation is especially tenuous for those living directly off the landscape via resources from natural ecosystems or subsistence agriculture as in much of tropical Africa. Studies of past climates provide potential analogues and help validate models essential for elucidating mechanisms that link changes in climate mean and variability a

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Chanyenga, Tembo Faera. "Effect of population size on viable seed output, seed rand and natural regeneration pattern of a tropical conifer Widdringtonia whytei-Rendle in Malawi." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85589.

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Thesis (PhD(For))--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Widdringtonia whytei is a tropical endemic, fire-adapted pioneer coniferous tree species within natural fire-fragmented Afromontane forest patches in a confined area on Mulanje Mountain in Malawi. Natural and anthropogenic fires within the surrounding fire-prone landscape, insect attacks, and uncontrolled harvesting of mature trees for timber threaten the survival of W. whytei. This study investigated the effects of population fragmentation on the reproductive biology of W. whytei, through four specific studies: effec

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Albuquerque, Marli de. "Le processus historique de découverte de la trypanosomiase américaine et la parasitologie française : du paludisme a la maladie de Chagas ou de la Veran a Carlos Chagas." Paris 10, 1994. http://www.theses.fr/1994PA100078.

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Cette investigation historique sur la maladie de Chagas a comme objet l'analyse du processus de production des savoirs dans le domaine de la biomédecine, en considérant son caractère interdisciplinaire, résultant de la compréhension de l'articulation des théories et pratiques dans les champs de la pathologie, de l'entomologie, de l'histologie, de la biologie, de la chimie, etc. . , vers la formulation et la confirmation des hypothèses de la recherche expérimentale, favorisant les découvertes de la médecine au début du XXe siècle. Au brésil, l'institutionnalisation de la biomédecine réalisée pa

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Gessain, Antoine. "Virus HTLV-1 et paraparesie spastique tropicale. Un rétrovirus leucemogene associe a une maladie neurologique : épidémiologie, caractérisation des isolats viraux associes et aspects moléculaires." Paris 7, 1992. http://www.theses.fr/1992PA077309.

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Le virus htlv-i retrovirus isole chez l'homme en 1980 est endemique au japon, dans la region caraibe, en amerique du sud et en afrique intertropicale. Dans ces regions 1 a 30% de la population generale a des anticorps seriques anti-htlv-i. Ce virus est l'agent etiologique de la leucemie t de l'adulte (atl) et d'une neuromyelopathie chronique denommee paraparesie spastique tropicale/myelopathie associee a l'htlv-i (tsp/ham). Ce travail realise entre 1983 et 1991 comporte quatre etapes successives. 1) dans un travail initial d'epidemiologie clinique et de terrain, j'ai participe a la decouverte

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Koné, André. "Contribution à la caractérisation des espaces à risque de maladie du sommeil dans un foyer en zone forestière." Rouen, 2000. http://www.theses.fr/2000ROUEL380.

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Transmise par une mouche du genre glossina, la trypanosomiase humaine africaine conduit fatalement à la mort si elle n'est pas traitée. Elle évolue sans signe apparent et ses bouffées épidémiques ont décimé les populations entières de certaines régions d'Afrique tropicale au début du siècle. Même si des milliers de cas ne sont plus annuellement dépistés comme c'était le cas au debut des années quarante dans les colonies de l'Afrique Occidentale Française, on assiste actuellement à l'émergence de nouveaux foyers dans des zones longtemps épargnées par la maladie et à la reviviscence d'anciens fo

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Zabala, Juan Pablo. "Production et utilisation des connaissances scientifiques autour de la maladie de Chagas." Paris 1, 2007. http://www.theses.fr/2007PA010725.

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Cette thèse vise il comprendre le rôle des connaissances scientifiques dans l'intervention sur les problèmes sociaux. La recherche porte sur la maladie de Chagas, la principale endémie de l'Amérique du Sud et un sujet récurrent des politiques publiques depuis le début du XXème siècle. Le principal objectif de la thèse est de reconstruire l 'histoire de la recherche scientifique sur la maladie de Chagas menée en Argentine depuis 1915 jusqu à 2000. On établie cinq différents périodes pour comprendre les relations entre les aspects sociaux, politiques et institutionnelles qui ont conditionné la p

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