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Academic literature on the topic 'GTDL'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "GTDL"

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Hortelano Mínguez, Luís Alfonso, and Antonio Martínez Puche. "Primeras Jornadas de Campo del Grupo de Trabajo en Desarrollo Local de la Asociación Española de Geografía (GTDL-AGE)." TERRA: Revista de Desarrollo Local, no. 10 (July 26, 2022): 286. http://dx.doi.org/10.7203/terra.10.24264.

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Resumen: Las Jornadas de Campo constituyen una de las herramientas didácticas con mayor arraigo en la Geografía y, tras la parálisis de las actividades educativas en el territorio determinada por la pandemia de la Covid-19, el Grupo de Trabajo en Desarrollo Local (GTDL) de la Asociación Española de Geografía (AGE) pretende recuperar esta práctica. Los diversos espacios geográficos, con sus dinámicas y transformaciones, se erigen en ámbitos de estudio a modo de laboratorios para el conocimiento y la interrelación con los vecinos y los agentes socioeconómicos («stakeholders»). La propuesta de estas primeras jornadas de campo, se centraron en el acercamiento a los núcleos de cabecera y otras villas históricas de las comarcas naturales salmantinas de Salvatierra y Entresierras, Béjar y Alto Tormes. El objetivo general fue el análisis de dos casos contrastados, por un lado, la ciudad de Béjar que padece las derivadas de la crisis del sector textil lanero y, por otro lado, la villa de Guijuelo que emerge con fuerza por el éxito del «saber de hacer» («know-how») secular en el tratamiento y curado de las carnes del cerdo ibérico. También abordamos la temática de la despoblación en la comarca del Alto Tormes y focalizado en el municipio de Puente del Congosto. Estas se celebraron el 25 y 26 de marzo de 2022. Palabras clave: espacios rurales, desarrollo territorial, despoblación, turismo, ciudadanía, salida de campo.
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Calsavara, Vinicius F., Eder A. Milani, Eduardo Bertolli, and Vera Tomazella. "Long-term frailty modeling using a non-proportional hazards model: Application with a melanoma dataset." Statistical Methods in Medical Research 29, no. 8 (November 6, 2019): 2100–2118. http://dx.doi.org/10.1177/0962280219883905.

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The semiparametric Cox regression model is often fitted in the modeling of survival data. One of its main advantages is the ease of interpretation, as long as the hazards rates for two individuals do not vary over time. In practice the proportionality assumption of the hazards may not be true in some situations. In addition, in several survival data is common a proportion of units not susceptible to the event of interest, even if, accompanied by a sufficiently large time, which is so-called immune, “cured,” or not susceptible to the event of interest. In this context, several cure rate models are available to deal with in the long term. Here, we consider the generalized time-dependent logistic (GTDL) model with a power variance function (PVF) frailty term introduced in the hazard function to control for unobservable heterogeneity in patient populations. It allows for non-proportional hazards, as well as survival data with long-term survivors. Parameter estimation was performed using the maximum likelihood method, and Monte Carlo simulation was conducted to evaluate the performance of the models. Its practice relevance is illustrated in a real medical dataset from a population-based study of incident cases of melanoma diagnosed in the state of São Paulo, Brazil.
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Smith, Stephen, and Jean McMahon. "With Demand Lacking, Smallpox Vaccine Expiring." International Journal of Health Services 34, no. 1 (January 2004): 173–75. http://dx.doi.org/10.2190/gtdl-6h9n-87b9-2rp6.

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Calvo-Garrido, Carlos, Aurélie Songy, Ariadna Marmol, Rafael Roda, Christophe Clément, and Florence Fontaine. "Description of the relationship between trunk disease expression and meteorological conditions, irrigation and physiological response in Chardonnay grapevines." OENO One 55, no. 2 (April 20, 2021): 97–113. http://dx.doi.org/10.20870/oeno-one.2021.55.2.4548.

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Esca disease and Botryosphaeria dieback are currently considered as serious grapevine diseases which affect vineyard health and induce economic losses. Both of these trunk diseases (GTDs) are caused by a complex of pathogens, and foliar expression is influenced by several factors, including environmental factors such as water stress. To manage water stress in some vine areas, culture practice based on irrigation systems for limiting water stress have been developed; however, little knowledge of the influence of such systems on GTD emergence is currently available. The present paper addresses the impact of irrigation systems and climatic factors (rainfall and temperature) on the expression of GTDs, specifically esca and Botryosphaeria dieback. A field experiment on Chardonnay in North East Spain, a vine growing area where drought is present and which is managed by an irrigation system, was therefore carried out during a 3-year period. The water stress impact on GTD expression was evaluated by measuring the GTD incidence and analysing different physiological parameters at different phenological stages, including principal component analysis and gene expression. The main finding of this study was the significant roles of vine transpiration and water availability, which depend on irrigation volume and rainfall amount; together, they may explain the erratic symptom expression in plants infected by GTD fungi depending on the year. All these parameters are discussed to better understand the relationship between GTD expression, irrigation system and climatic factors.
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Chacón-Vozmediano, Juan L., David Gramaje, Maela León, Josep Armengol, Juan Moral, Pedro M. Izquierdo-Cañas, and Jesús Martínez-Gascueña. "Cultivar Susceptibility to Natural Infections Caused by Fungal Grapevine Trunk Pathogens in La Mancha Designation of Origin (Spain)." Plants 10, no. 6 (June 9, 2021): 1171. http://dx.doi.org/10.3390/plants10061171.

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Grapevine trunk diseases (GTDs) are one of the main biotic stress factors affecting this crop. The use of tolerant grapevine cultivars would be an interesting and sustainable alternative strategy to control GTDs. To date, most studies about cultivar susceptibility have been conducted under controlled conditions, and little information is available about tolerance to natural infections caused by GTD fungi. The objectives of this study were: (i) to identify tolerant cultivars to GTD fungi within a Spanish germplasm collection, based on external symptoms observed in the vineyard; and (ii) to characterize the pathogenic mycoflora associated with symptomatic vines. For this purpose, a grapevine germplasm collection including 22 white and 25 red cultivars was monitored along three growing seasons, and their susceptibility for esca foliar symptoms was assessed. Fungi were identified by using morphological and molecular methods. Cultivars such as, ‘Monastrell’, ‘Graciano’, ‘Cabernet Franc’, ‘Cabernet Sauvignon’, ‘Syrah’, ‘Moscatel de Alejandría’, ‘Sauvignon Blanc’, and ‘Airén’ displayed high susceptibility to GTDs, whereas others such as ‘Petit Verdot’, ‘Pinot Noir’, ‘Chardonnay’, and ‘Riesling’ were considered as tolerant. The prevalent fungal species isolated from symptomatic vines were Phaeomoniella chlamydospora (27.9% of the fungal isolates), Cryptovalsa ampelina (24.6%), and Dothiorella sarmentorum (21.3%).
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Thakuria, Sailendra K., Monoj K. Deka, and Shah A. Sheikh. "A clinicopathological study of gestational trophoblastic disease in a tertiary care centre of southern Assam." International Journal of Research in Medical Sciences 9, no. 4 (March 26, 2021): 1169. http://dx.doi.org/10.18203/2320-6012.ijrms20211370.

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Background: Gestational trophoblastic disease (GTD) covers a wide spectrum of benign and malignant conditions that arise from pregnancies with abnormal trophoblastic tissue development. It is a source of significant morbidity as well as increased risk of mortality from their complications if not identified and treated early enough. Our study aimed at the various clinicopathological features of GTDs along with their prevalence in a tertiary care centre.Methods: It was a retrospective cross-sectional study conducted over a period of 3 years from January 2017 to December 2019. All GTD cases were retrieved from department registries and analysed.Results: Out of 60 diagnosed cases of GTDs, 57 cases (95%) were Hydatiform mole. Invasive mole and choriocarcinoma were 2 cases (3%) and 1 cases (2%) respectively. Age ranged from 18-37 years. The most commonly affected age group was 20-25 years with 33 cases (55%). Most cases were presented in the first trimester presenting with bleeding per vagina. The majority of GTD cases belonged to blood group A and 50,000-<1,00,000 mlU/mL beta HCG level.Conclusions: Histopathological examination is helpful for confirmation of diagnosis.It is very important to follow up of such patients for early diagnosis of malignant trophoblastic tumors.
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Lade, Sarah B., Dora Štraus, Arnau Buñol, and Jonàs Oliva. "Hot Water Treatment Causes Lasting Alteration to the Grapevine (Vitis vinifera L.) Mycobiome and Reduces Pathogenic Species Causing Grapevine Trunk Diseases." Journal of Fungi 8, no. 5 (May 6, 2022): 485. http://dx.doi.org/10.3390/jof8050485.

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The effective management of grapevine trunk diseases (GTDs) is an ongoing challenge. Hot water treatment (HWT) is an environmentally friendly and economically viable option; however, the short-term effects of HWT on grapevine (Vitis vinifera L.) health and production are not fully understood. The aim of this study was to compare the effects of HWT on plant growth and fungal community structure in nursery stock until plants were completely established in the field. We assessed eleven graft and three rootstock varieties from four local nurseries in a region of Catalonia (NE Spain) where GTDs are a serious threat. After treatment, the plants were left to grow under field conditions for two growing seasons. Metabarcoding of the ITS region was used to study the mycobiomes of plant graft unions and root collars. We also assessed the influence of plant physiological indicators in community composition. Hot water treatment caused lasting changes in GTD communities in both the root collar and graft union that were not always characterized as a reduction of GTD-related fungi. However, HWT reduced the relative abundance of some serious GTD-associated pathogens such as Cadophora luteo-olivacea in graft tissues, and Phaeomoniella chlamydospora and Neofusicoccum parvum in the root collar. Treatment had the greatest influence on the total and GTD-related fungal communities of Chardonnay and Xarel·lo, respectively. Total community variation was driven by treatment and nursery in rootstocks, whereas HWT most significantly affected the GTD community composition in R-110 rootstock. In conclusion, changes in fungal abundance were species-specific and mostly dependent on the plant tissue type; however, HWT did reduce plant biomass accumulation in the short-term.
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Tuppin, Philippe, Sébastien Rivière, David Deutsch, Christelle Gastaldi-Menager, and Jean-Marc Sabaté. "Burden of drug use for gastrointestinal symptoms and functional gastrointestinal disorders in France: a national study using reimbursement data for 57 million inhabitants." Therapeutic Advances in Gastroenterology 12 (January 2019): 175628481985379. http://dx.doi.org/10.1177/1756284819853790.

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Background: Gastrointestinal therapeutic drugs (GTDs) are extensively prescribed. The aim of this study was to investigate the characteristics of GTD use in a large population: the French general health scheme beneficiaries (87% of the 66 million inhabitants) in 2016. Methods: The national health data system was used to identify individual characteristics, diseases and GTD classes reimbursed, together with the costs, using anatomical therapeutic chemical class. Results: Among the 57.5 million individuals included, 45% received at least one reimbursement among the 130 million prescriptions reimbursed (90% prescribed by a general practitioner): proton-pump inhibitors (PPI; A02BC: 24%), drugs for functional gastrointestinal disorders (A03: 20%), drugs for constipation (A06: 10%), antidiarrheals, intestinal anti-inflammatory/anti-infective agents (A07: 10%), antiemetics and antinauseants (A04: 7%), other drugs for acid-related disorders (A02X: 6%), other drugs for peptic ulcer and gastro-oesophageal reflux disease (A02BX: 4.5%), antacids (A02A: 1.5%). The overall cost of reimbursed GTDs was €707 million and the mean cost per user was €28. Marked variations were observed according to age, sex, and disease. The rates of at least one reimbursement among infants were A07: 28%, A03: 17%, A02BX: 9%, A02X: 7%, A02BC: 6% and A06: 5%. Women more frequently received a reimbursement than men for each GTD class. Reimbursement rates also varied according to health status (end-stage renal disease A02BC: 66%, pregnancy A03: 53%, A04: 11%), treatments (people with at least six reimbursements for nonsteroidal anti-inflammatory drugs in 2016 A02BC: 62%). Chronic GTD use (>10 reimbursements/year) was observed in 19% of people with at least one A02BC reimbursement, A02BX: 11%, A03: 7%, A04: 2%, A06: 17% and A07: 3%. Conclusions: This study demonstrates extensive and chronic use of GTD in France, raising the question of their relevance according to current guidelines. They must be disseminated to general practitioners, who are the main prescribers of these drugs.
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CLAVERIE, Marion, Martin NOTARO, Florence FONTAINE, and Jacques WERY. "Current knowledge on Grapevine Trunk Diseases with complex etiology: a systemic approach." Phytopathologia Mediterranea 59, no. 1 (April 16, 2020): 29–53. http://dx.doi.org/10.36253/phyto-11150.

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Among all causes of grapevine decline, Grapevine Trunk Diseases (GTDs) are major concerns for grape growers. This paper reviews knowledge and proposes hypotheses on two major GTDs, esca and Botryosphaeria dieback, and assembles a conceptual model. The objective was to collect information into a sequence, from grapevine nursery propagation processes, through foliar symptom expression, to plant death in mature vineyards. Pathogen infection and colonization steps in woody vine tissues, and the hypotheses that have been formulated to explain the outburst of foliar symptoms, are reported and discussed. Factors that could aggravate or repress GTD symptoms and incidence expansion are also addressed. Vine physiology and pathology together could expand understanding of these diseases. Knowledge and hypotheses that need validation are summarized, and a conceptual model is proposed to explain the occurrence of symptoms and the influencing factors. The model could be useful to cope with the complexity of GTDs, and as a starting point for research to unravel knowledge gaps and suggest new disease management strategies.
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Ikechukwu, Obetta Hillary, Hadiza Abdullah Usman, and Nweze Sylvester Onuegunam. "A Five-Year Retrospective Study of Gestational Trophoblastic Disease at University of Maiduguri Teaching Hospital Maiduguri, Nigeria." International Journal of Science and Healthcare Research 6, no. 2 (June 29, 2021): 228–34. http://dx.doi.org/10.52403/ijshr.20210441.

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Background: Gestational trophoblastic disease (GTD) is an uncommon complication of pregnancy. It is of clinical and epidemiological interest partly because of its good prognosis if detected and managed early. Objective: This study was to determine the prevalence, clinical presentation, management outcome and histologic types of GTDs at University of Maiduguri Teaching Hospital, Maiduguri, Nigeria. Methodology: A five-year retrospective study of histologically confirmed cases of GTDs managed in UMTH was undertaken. Folders of patient treated for GTD during the study period served as source of data. Statistical analysis was done using Statistical Package for the Social Sciences. Results: There were a total of 47 (38 molar and 9 choriocarcinoma) cases of GTDs that were diagnosed and managed at UMTH. However, only 40[31(77.5%)] molar and [9(22.5%) choriocarcinoma] case files were retrieved. 55% of the GTDs were complete hydatidiform mole, 22.5% partial hydatidiform mole and 22.5% choriocarcinoma. There was no case of invasive mole or placental site trophoblastic tumour noted. There were 15,426 deliveries in UMTH during this period giving the incidence of GTDs as 3.0 per 1000 deliveries or 1 in 328deliveries. The mean (SD) age of the patients was 30.5 ± 5.6years. Only 3(7.5%) of the patients were below 20 years of age and those who were at least 40 years of age constituted 8(20%). Low parity constituted 62.5% of the patients while 12.5% and 2.5% were nullipara and primipara respectively. The mean gestational age (SD) at presentation was 16.5±6.2 weeks. The common clinical presentations were amenorrhoea (100.0%), abnormal vaginal bleeding (97.5%), lower abdominal pain (90%) and passage of grape-like vesicles (45.0%). Only 6(15.0%) complied with the follow-up protocol for one year, while 25(62.5%) of the patients did not observe the follow-up protocol. Anaemia was the commonest complication observed. Conclusion: Gestational trophoblastic disease is relatively common in our center with an incidence of 3.0 per 1000 deliveries and 1.48% of our gynaecological admissions. Adequate patient counseling and compliance to follow-up are recommend for good outcome. Keywords: Prevalence, gestational trophoblastic disease, Hydatidiform mole, Choriocarcinoma, Maiduguri.
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Dissertations / Theses on the topic "GTDL"

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Santos, Rodrigo Alves dos. "Estudo da viabilidade técnica e econômica de produção de petróleo sintético offshore a partir de rejeito rico em CO2." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-11072014-020823/.

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A descoberta de uma nova província petrolífera, conhecida como pré-sal, localizada no litoral brasileiro, representa um novo marco na produção de petróleo mundial. Dentre os vários desafios encontrados para exploração e produção dessa região, a presença de CO2 em grandes concentrações nos fluidos de alguns desses reservatórios tem sido um dos desafios de maior relevância para as empresas que exploram e produzem nessa área (FORMIGLI, 2007). Uma forma alternativa de sequestro do CO2 retirado do gás natural é a sua utilização como matéria prima ou co-alimentação para a síntese de produtos químicos, em especial aqueles com grande demanda de mercado. Um dos produtos que podem ser obtidos indiretamente a partir do CO2 é o petróleo sintético, produzido pelo processo conhecido como Gas-to-Liquids, ou GTL. Neste trabalho foi analisada a viabilidade técnica, econômica e potencial de captura de CO2, da produção de petróleo sintético, pelo processo GTL, offshore, a partir de dióxido de carbono (CO2) e metano (CH4), presentes na corrente de rejeito do tratamento do gás processado em uma plataforma de produção de petróleo e gás, através das reformas seca e a vapor, seguida da síntese Fischer-Tropsch. A partir de dados de literatura e com uso de simulador comercial de processos, a simulação do processo foi desenvolvida e diferentes alternativas para reaproveitamento das correntes residuais do processo foram analisadas, incluindo o reciclo e a queima dos efluentes combustíveis, assim como foram aplicadas técnicas de integração energética, otimização e análise econômica de processos. Os resultados indicaram que o processo, mássica e energeticamente integrado, na condição de menor emissão de CO2 e maior retorno financeiro, produziu petróleo sintético de forma técnica e economicamente viável. Os resultados indicaram ainda que o processo GTL, com as tecnologias utilizadas, não é indicado como método de captura de CO2 devido o fato de a geração desse componente para a produção de petróleo sintético ser duas vezes maior que a quantidade alimentada.
The discovery of a new oil province known as pre-salt, located in the Brazilian coast, represents a new frontier in the world\'s oil production. Among other challenges involved in the exploration and production in that region, the CO2 concentration at high levels in the fluids of some of those reservoirs has been the most relevant challenge for the companies that explore and produce in that area (FORMIGLI, 2007). An alternative to sequestering the CO2 extracted from natural gas is using it as a supply of raw material or as an input to the synthesis of chemical products, especially those with great market demand. One of the products that can be obtained indirectly from CO2 is synthetic fuel, produced by the process known as Gas-to- Liquids, or GTL. In this work the technical, economical and potential feasibility of CO2 capture is analyzed, as well as the production of synthetic fuel using the GTL process, offshore, from carbon dioxide (CO2) and methane (CH4), found in the waste chain of the gas treatment in an oil and gas production platform, through dry and steam reforming, followed by Fischer-Tropsch synthesis. Thus, based on literature data and on the use of a commercial process simulator, the simulation of the suggested process was developed and different alternatives to the reutilization of the waste chains were analyzed, including the recycling and burning of some effluent streams. Techniques of energetic integration, optimization and economic analysis of process have also been applied. The results indicated that the process, mass and energy integrated in the condition of lower CO2 emissions and greater financial return, produced synthetic oil in a technically and economically feasible way. The results also indicated that the GTL process, with the technologies used, is not suitable as a method for CO2 capture due to the fact that the generation of this component for the production of synthetic oil is two times greater than the amount fed.
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Wang, Xiaonian. "Computer simulation of GTL and various problems in thermodynamics." Texas A&M University, 2003. http://hdl.handle.net/1969.1/2210.

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This dissertation intends to provide new tuning techniques for several simple cubic equations of state (EOS) to improve their accuracy in calculating fluid phase equilibrium. It also provides graphical tools to predict some phase equilibrium phenomena from activity coefficient models. Finally, it presents simulation results for a new gas-to-liquids process. Saturation Properties for Fluids: By deriving a new identity linking the heat of vaporization for pure components to the EOS, we are able to find new expressions for the two constants a & b in the EOS. These new expressions then allow tuning of both constants a and b to experimental saturation properties at subcritical temperatures. These new tuning procedures prove effective to the point where the simpler Redlich-Kwong EOS provides better results with our procedure than does the usually superior Peng-Robinson EOS with conventional procedures. Activity Coefficient Models: This dissertation shows the flexibility of four activity coefficient models in the prediction of three fluid phase equilibrium phenomena. From these models we successfully developed new graphs that allow one to identify the presence of any of the three phenomena by visual inspection without performing a complex calculation as seen in current texts. Remote Natural Gas: This dissertation presents simulation results of a new gas-to-liquids process which converts natural gas to liquid transportation fuels. Based on the assumption of adiabatic reactions, our simulation results show that methane conversion increases with higher reaction temperature and longer residence times. Hydrogen can both inhibit methane decomposition and reduce coke formation. The rich components in the natural gas are found to decompose very fast and they have a vast quenching effect on the whole reactions. Recycling of unreacted methane also increases overall methane conversion. Finally, our simulator provides very close prediction of the experimental results from a pilot plant. Thus, we conclude that the simulation work is basically successful in fulfilling the goal of this research.
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Gerry, Michael J. "Two-dimensional inverse scattering based on the GTD model /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487946103567201.

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Quintero, Soltero Oscar. "Microstructural characterization of overaged GTD-111 HP turbine buckets." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Asari, Satoshi. "Evaluation of the GTL technology for use in the *T Network." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/36511.

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Bao, Buping. "Simulation, integration, and economic analysis of gas-to-liquid processes." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3131.

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Presotto, Alice. "Efeitos de campos magnéticos externos e de correntes de transporte na dinâmica de vórtices em uma constrição mesoscópica /." Ilha Solteira, 2017. http://hdl.handle.net/11449/151624.

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Orientador: Rafael Zadorosny
Resumo: Com o desenvolvimento científico, a fabricação de materiais em escalas nano e submicrométricas tornou-se uma realidade. Nos estudos teóricos e experimentais de materiais supercondutores, tais sistemas são denominados de mesoscópicos, e possuem tamanhos da ordem dos seus comprimentos característicos, i.e., λ(T) e ξ(T). Nessas escalas, a dinâmica de vórtices é fortemente dominada por efeitos de confinamento. Dessa forma, a investigação de suas características tem importância fundamental para o desenvolvimento e aplicação desses materiais de forma eficaz. Assim, neste trabalho foram estudados os efeitos da passagem de uma corrente de transporte por uma constrição de tamanhos mesoscópicos, que foi produzida inserindo dois defeitos (normalizando 0<ψ<1 dentro do defeito) nas bordas opostas do sistema. Para tal, simulamos amostras supercondutoras mesoscópicas na presença de correntes de transporte e de campos magnéticos solucionando a equação generalizada de Ginzburg-Landau dependente do tempo (GTDGL). Sem campo magnético aplicado, os pares de vórtices cinemáticos são formados nos defeitos e se aniquilam no centro da amostra. Por outro lado, quando um baixo campo magnético é aplicado, produz uma assimetria na distribuição das correntes supercondutoras. Então, apenas o vórtice cinemático é formado em uma borda da amostra e a deixa pela lateral oposta. Contudo, antes de deixar o sistema, o vórtice cinemático experimenta um efeito de barreira superficial, que causa uma diminuição em su... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: With the scientific development, the fabrication of materials at nano and sub-micrometer scales become a reality. In theoretical and experimental study of superconducting materials, such systems are called mesoscopic and have sizes of the order of their characteristic lengths, i.e., λ(T) and ξ(T). In these scales, the vortex dynamics is strongly dominated by confinement effects. In this way, the investigation of their characteristics have fundamental importance for the development and application of these materials effectively. Then, in this work we studied the effect of a transport current flowing through a mesoscopic constriction, which was produced by inserting two defects (normalizing 0<ψ<1 inside the defect) on the opposite edges of the system. The mesoscopic superconducting samples were simulated in the presence of transport currents and applied magnetic fields by solving the time-dependent Ginzburg-Landau equation in its generalized form (GTDGL). At zero applied magnetic field, kinematic vortex-antivortex pairs are formed at the defects and annihilate at the center of the sample. On the other hand, small external magnetic fields produce an asymmetry in the distribution of the superconducting currents. Then, only one kinematic vortex is nucleated in one of the borders of the sample and leaves it by the opposite side. However, before leaves the system, the kinematic vortex experiences a surface barrier effect, which causes a decrease in its velocity. The results obtained... (Complete abstract click electronic access below)
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Presotto, Adriana Guirao. "Resposta magneto-elétrica de nanofitas supercondutoras granulares : simulações utilizando o formalismo de Ginzburg-Landau dependente do tempo /." Ilha Solteira, 2020. http://hdl.handle.net/11449/192560.

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Orientador: Rafael Zadorosny
Resumo: Correntes de transporte interagem com os vórtices de Abrikosov nos supercondutores do tipo II via força de Lorentz (FL), o que pode resultar em seu movimento. Esse movimento ocorrerá se FL suprimir a força de pinning (FP) [4,6], que mantém os vórtices ancorados, tais como defeitos e orifícios artificiais nas amostras. Nos casos em que FL >> FP, os vórtices se movem livremente e experimentam apenas resistência viscosa devido à sua interação com o condensado supercondutor. Esse estado de movimento é conhecido como flux flow (FF). Assim, no presente trabalho, estudamos a dinâmica dos vórtices em uma fita supercondutora com tamanhos laterais de 10 ξ(0) x 70 ξ(0), com seis grãos espaçados por um supercondutor de menor Tc, i.e., um weak-link (WL). Além disso, em cada grão foram considerados quatro defeitos da mesma natureza que os WL’s, simulando defeitos intrínsecos. Para tal estudos, as equações generalizadas de Ginzburg-Landau dependentes do tempo (GTDGL) foram solucionadas numericamente. Assim, foram considerados três valores diferentes de campos magnéticos externos, i.e., Hap = 0,1 Hc2(0), 0,3 Hc2(0) e 0,5 Hc2(0), e densidade de correntes de transporte de intensidade que variou em passos de 0,005J0. Observou-se que a intensidade de Hap, influencia diretamente nos regimes de movimento, onde para Hap = 0,1 Hc2(0) foi verificado apenas o FF intergranular e uma dinâmica mais duradoura. Já para Hap = 0,3 Hc2(0) e 0,5 Hc2(0) foram observados dois regimes de movimento, o flux flow (F... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Transport currents interact with Abrikosov vortices in type II superconductors via Lorentz force (FL), which can result in their motion. Such movement will occur if FL suppresses the pinning force (FP) [4,6], which keeps vortices trapped, such as defects and artificial holes in the samples. In cases where FL >> FP, the vortices move freely and experience only a viscous resistance due to their interaction with the superconducting condensate. This state of motion is known as flux flow (FF). Thus, in the present work, we studied the vortex dynamics a superconducting tape with lateral sizes of 10 ξ(0) x 70 ξ(0), with six grains spaced by a smaller Tc superconductor, i.e., a weak-link (WL). In addition, in each grain, four defects of the same nature as the WL's were considered, simulating intrinsic defects. For such studies, the generalized time-dependent Ginzburg-Landau equations (GTDGL) were solved numerically. Thus, three different values for the external magnetic field were considered, i.e., Hap = 0.1 Hc2(0), 0.3 Hc2(0) and 0.5 Hc2(0), and density of transport currents of intensity that varied in steps of 0,005 J0. It was observed that the intensity of Hap directly influences the motion regimes, where for Hap = 0.1 Hc2 (0) it was verified only the intergranular FF and a longer dynamics. For Hap = 0.3 Hc2(0) and 0.5 Hc2(0), two motion regimes were observed, the inter and intragranular FF. However, there was a faster destruction of the superconductor (SC). It was also found that... (Complete abstract click electronic access below)
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COSTA, LETICIA DE ALMEIDA. "VALUATION OF GTL PROJECT: A REAL OPTION APLICATION WITH MEAN REVERSION MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10096@1.

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Abstract:
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
O Presente trabalho tem como objetivo analisar a viabilidade econômica de uma planta XTL usando a teoria das Opções Reais. Esta metodologia é a mais adequada para avaliar a capacidade que este tipo de projeto dispões de trocar de input e/ou output, ou seja, eleger a cesta que maximiza o resultado final, de acordo com cada cenário. Essa política ótica permite avaliar a construção de uma planta com flexibilidades, com o investimento ocorrendo em um ambiente de incerteza, onde os preços (fatores de incerteza) serão considerados estocáticos e seguirão um Movimento de Reversão à Média. Os cálculos numéricos serão feitos através da simulação de Monte Carlo. A tecnologia, designada XTL, está dividida em duas etapas: um processo de gaseificação seguido de um processo GTL (gás-to- liquid). A gaseificação permite transformar sólidos, líquidos e gases em gás de síntese, que será usado como input do GTL. Já o GTL possibilita transformar o gás de síntese em líquidos de alta qualidade, tais como nafta, diesel, parafinas e lubrificantes. Por associação, esta dissertação faz parte de um projeto que visa aplicar a teoria de Opções Reais na avaliação de investimentos em Pesquisa e Desenvolvimento (P&D), com a finalidade de valorar e considerar as flexibilidades inerentes a este tipo de projeto.
The present work has objective to analyze the investiment of a XTL plant using the Real Options Theory. This methodology is adjusted to evaluate the capacity that this project has to changes its input and/or output, in other words, to elect the option that maximizes payoff, in accordance with each scenario, allowing to evaluate the construction of a plant with flexibilities with the investiments happening in an environment of economical and/or technical uncertainties, where the prices (uncertainty factors) are stochastic and will follow the Mean Reversion Model, calculated by the Monte Carlo Simulation. The XTL technology is divided in two stages: a gasification process followed by a GTL (gas-to-liquid) process. The gasification process allows you to transform solids, liquids and gases into synthesis gas, that will be used as input of the GTL. The GTL makes possible to transform the syntesis gas into high quality liquids, such as naphtha, diesel, paraffins and lubrificants. This work is part of a project, with the objective to apply the Real Options Theory in the evaluation of investiments in Research and Development (R&D), aiming to price and consider the flexibilities that are inherent to this project.
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Karabanova, Anastasiya. "The Effectiveness of Small-scale GTL Technologyin Remote Small Fields of Russia." Thesis, KTH, Energiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210216.

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Abstract:
In the Thesis, the problem of associated petroleum gas flaring both in Russia and in the world is revealed. The analysis of associated petroleum gas utilization methods in respect to the small remote oil fields is carried out. The Thesis shows the perspective of creating low and medium power autonomous installations for energy supply to the oil facilities in the remote areas with poorly developed energy infrastructure by processing associated petroleum gas in small-scale GTL technology unit. Taking into account specifics of small remote oil fields, GTL technology scheme was chosen among existing types and its material balance wascalculated. The schemes of both associated petroleum gas utilization and power production on site in the small remote fields were suggested and compared to each other from economical and environmental perspectives. Furthermore, the economic effect from themini-GTL technology introduction into the schemes was defined.
I avhandlingen uppenbaras problemet med tillhörande petroleumsgaser både i Ryssland och i världen. Analysen av tillhörande oljeutnyttjande metoder för de små avlägsna oljefälten utförs. Avhandlingen visar perspektivet på att skapa låga och medelkraftiga autonoma installationer för energiförsörjning till oljeanläggningarna i de avlägsna områdena med dåligt utvecklad energiinfrastruktur genom att bearbeta tillhörande oljegas i småskaliga GTL-teknologienheten. Med tanke på särdrag hos små avlägsna oljefält valdes GTLteknikprogrammet bland befintliga typer och dess materialbalans beräknades. Systemen för både tillhörande oljeutnyttjande och kraftproduktion på plats i de små avlägsna fälten föreslogs och jämfördes med varandra från ekonomiska och miljömässiga perspektiv. Vidare definierades den ekonomiska effekten från mini-GTLteknikintroduktionen i systemen.
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Books on the topic "GTDL"

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Panin, V. V. Gazodinamicheskai︠a︡ ustoĭchivostʹ kompressorov aviat︠s︡ionnykh GTD. Kiev: Ministerstvo obrazovanii︠a︡ Ukrainy. Kievskiĭ mezhdunar. universitet grazhdanskoĭ aviat︠s︡ii, 1998.

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Neta, Beny. R & D GTDS SST: Code flowcharts and input. Monterey, Calif: Naval Postgraduate School, 1995.

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Zakharov, V. A. Tekhnologii͡a︡ sborki i kontroli͡a︡ podshipnikovykh opor GTD. Moskva: "Mashinostroenie", 1985.

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Nikonova, I. A. Tekhniko-ėkonomicheskai͡a︡ ėffektivnostʹ aviat͡s︡ionnykh GTD v ėkspluatat͡s︡ii. Moskva: Mashinostroenie, 1989.

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National Research Council (U.S.). Committee on Review of the Department of Energy's Genomics:GTL Program., ed. Review of the Department of Energy's Genomics: GTL program. Washington, D.C: National Academies Press, 2006.

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Boguslaev, V. A. Issledovanie tekhnologicheskoĭ nasledstvennosti pri izgotovlenii detaleĭ GTD iz titanovykh splavov. Zaporozhʹe: Motor Sich, 2001.

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Kanilo, P. M. Ėnergeticheskie i ėkologicheskie kharakteristiki GTD pri ispolʹzovanii uglevodorodnykh topliv i vodoroda. Kiev: Nauk. dumka, 1987.

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Shaltens, Richard K. Initial results from the solar dynamic (SD) ground test demonstration (GTD) project at NASA Lewis. [Washington, D.C.]: National Aeronautics and Space Administration, 1995.

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Shaltens, Richard K. Initial results from the solar dynamic (SD) ground test demonstration (GTD) project at NASA Lewis. [Washington, D.C.]: National Aeronautics and Space Administration, 1995.

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Sorrentino, Mike. Here's the situation: A guide to creeping on chicks, avoiding grenades, and getting in your GTL on the Jersey Shore. New York: Gotham Books, 2010.

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Book chapters on the topic "GTDL"

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MacKenzie, Gilbert, and Il Do Ha. "Multivariate Survival Models Based on the GTDL." In Contributions to Statistics, 23–34. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04579-5_3.

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Gebauer, Jan Peer, and Martin Kaltschmitt. "Bio-Gtl Processes." In Energy from Organic Materials (Biomass), 1145–74. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7813-7_1041.

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Gebauer, Jan Peer, and Martin Kaltschmitt. "Bio-Gtl Processes." In Encyclopedia of Sustainability Science and Technology, 1–31. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-2493-6_1041-1.

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Chaloupka, H. "Inverse GTD via Polarimetric Linear Prediction." In Direct and Inverse Methods in Radar Polarimetry, 545–54. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-010-9243-2_20.

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Steine, Tor Olav. "The Norwegian State Railway System GTL (1976)." In IFIP Advances in Information and Communication Technology, 290–98. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17145-6_30.

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Zhang, Xinsheng, Minghu Wang, and Fan Yu. "A SVM Approach for MCs Detection by Embedding GTDA Subspace Learning." In Lecture Notes in Electrical Engineering, 89–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27296-7_15.

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Asaro, Marianna, and Ronald M. Smith. "Gas to Liquid Technologies gas-to-liquids (GtL) technologies." In Encyclopedia of Sustainability Science and Technology, 3955–97. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_72.

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Yu, Yang, Jin Li, and Rui Min. "A Scattering Model Based on GTD in Terahertz Band." In The Proceedings of the Second International Conference on Communications, Signal Processing, and Systems, 879–86. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00536-2_101.

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Wang, Ming-ming, Yong-gang Zhang, Dong Liu, and Gui-qiang Zhang. "Study of Inlet Valve Seat Protrusion Effect on GTDI Engine Flow Box." In Proceedings of China SAE Congress 2020: Selected Papers, 1041–53. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-2090-4_64.

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Rosen, Brian A., and Sarika Singh. "Fossil Fuels: Coke-Resistant Nanomaterials for Gas-to-Liquid (GTL) Fuels." In Nanotechnology for Energy Sustainability, 59–82. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527696109.ch3.

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Conference papers on the topic "GTDL"

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Ruiz Sánchez, Andrés, and Inmaculada Moreno Márquez. "Innovación social en la optimización de los recursos locales a través de la vía verde en Castalla (Vía Verde Agost-Alcoy)." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-40.

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González Cardona, Javier. "Profesionales en desarrollo local. Acciones, logros y retos de futuro ¿qué va a pasar con los AEDL?" In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-53.

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Galán Soler, Jorge, and Alberto Lorente Saiz. "Iniciativas juveniles como base de desarrollo integral. Espacios de co-working y nuevas economías: Youth Hub." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-08.

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Caravaca Barroso, Inmaculada, and Gema González Romero. "Alcalá de Guadaíra: de ciudad competitiva a ciudad resiliente." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-23.

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Morales Yago, Francisco José. "La potenciación del espacio rural como motor de desarrollo local, ante la actual crisis industrial en la comarca del Altiplano (Murcia)." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-24.

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Šadeikaitė, Giedrė. "El cambio de las prácticas de desarrollo: participación ciudadana, innovación social y desarrollo humano sostenible." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-36.

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Teruel Roca, D. "El observatorio como herramienta para el desarrollo local." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-37.

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González de Bustos, Loretta. "La música como elemento de participación ciudadana y desarrollo local." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-38.

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Mohamed Ali, Hindu. "El papel de la mujer en la sociedad saharaui." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-39.

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Brunet Estarellas, Pere J. "Desarrollo local sostenible, crisis e iniciativas locales de resiliencia." In IX Coloquio Nacional de Desarrollo Local del GTDL-AGE. Servicio de Publicaciones de la UA, 2016. http://dx.doi.org/10.14198/ixcongresodesarrollolocal-21.

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Reports on the topic "GTDL"

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Herbert M. Sauro. Computational Resources for GTL. Office of Scientific and Technical Information (OSTI), December 2007. http://dx.doi.org/10.2172/921099.

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D. M. Perez, G. S. Chang, N. E. Woolstenhulme, and D. M. Wachs. GTL-1 Irradiation Summary Report. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1056081.

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Wagner, Terrance. Advanced Gasoline Turbocharged Direction Injection (GTDI) Engine Development. Office of Scientific and Technical Information (OSTI), December 2015. http://dx.doi.org/10.2172/1253890.

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Neta, Beny, and D. A. Danielson. R & D GTDS SST: Code Flowcharts and Input. Fort Belvoir, VA: Defense Technical Information Center, January 1995. http://dx.doi.org/10.21236/ada531135.

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Rintoul, Mark Daniel, Anthony A. Martino, Brian Palenik, Grant S. Heffelfinger, Ying Xu, Al Geist, and Andrey Gorin. Genomics :GTL project quarterly report April 2005. Office of Scientific and Technical Information (OSTI), November 2005. http://dx.doi.org/10.2172/877716.

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Matsuhita, Koichi, Manabu Kobayashi, Hiroshi Yachi, and Junko Matsui. Gasoline Preparation From GTL Oil~Hydrocracking and Secondary Reformation. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0263.

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none,. U.S. Department of Energy's Genomics: GTL Bioenergy Research Centers White Paper. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/1218383.

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Bromberg, Leslie, Wai K. Cheng, William H. Green, Emmanuel Lim, Angie Acocella, Kevin Cedrone, and Cohn R. Daniel. Final Scientific/Technical Report Compact, Inexpensive Micro-Reformer for Distributed GTL Systems. Office of Scientific and Technical Information (OSTI), October 2014. http://dx.doi.org/10.2172/1160094.

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Tsujimura, Taku, Shinichi Goto, and Hideki Matsubara. Effects of Properties of GTL Fuels on Emission Characteristics of Diesel Vehicle. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0265.

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Tsubakiyama, Toru, Mitsuharu Oguma, Shinichi Goto, Mitsuru Konno, and Hideki Matsubara. Engine Performances and Emission Properties of Operation Limit Area Fueled With GTL. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0266.

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