Academic literature on the topic 'M. marinum'

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Journal articles on the topic "M. marinum"

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Isolina Campos-Herrero, M., F. Javier Noguera, Antonio Acosta, and Bernardo Lafarga. "M. marinum skin infection." Antimicrobics and Infectious Diseases Newsletter 14, no. 7 (July 1995): 51–52. http://dx.doi.org/10.1016/s1069-417x(05)80011-1.

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Campos-Herrero, M. Isolina, F. Javier Noguera, Antonio Acosta, and Bernardo Lafarga. "M. marinum skin infection." Antimicrobics and Infectious Diseases Newsletter 14, no. 10 (October 1995): 75–76. http://dx.doi.org/10.1016/1069-417x(96)83278-x.

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Stragier, Pieter, Anthony Ablordey, Wayne M. Meyers, and Françoise Portaels. "Genotyping Mycobacterium ulcerans and Mycobacterium marinum by Using Mycobacterial Interspersed Repetitive Units." Journal of Bacteriology 187, no. 5 (March 1, 2005): 1639–47. http://dx.doi.org/10.1128/jb.187.5.1639-1647.2005.

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ABSTRACT A novel category of variable tandem repeats (VNTR) called mycobacterial interspersed repetitive units (MIRUs) has been identified for Mycobacterium ulcerans (n = 39), M. marinum (n = 27), and one related organism. Fifteen MIRU loci were identified in the genome of M. marinum and were used to genotype M. ulcerans, M. marinum, and an M. marinum-like organism that is considered a possible missing link between M. marinum and M. ulcerans. Seven MIRU loci were polymorphic, and locus-specific PCRs for four of these loci differentiated seven M. ulcerans genotypes, four M. marinum genotypes, and a unique genotype for the missing link organism. The seven M. ulcerans genotypes were related to six different geographic origins of isolates. All isolates from West and Central Africa, including old and recent isolates, belonged to the same genotype, emphasizing the great spatiotemporal homogeneity among African isolates. Unlike the M. ulcerans genotypes, the four M. marinum genotypes could not be clearly related to the geographic origins of the isolates. According to MIRU-VNTR typing, all M. ulcerans and M. marinum isolates of American origin were closely related, suggesting a common American ancestor for these two pathogenic species on the American continents. MIRU typing has significant potential value for discriminating between reoccurrence and reinfection for M. ulcerans disease.
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Song, Chang-Hwa, Ji-Sook Lee, Hwa-Jung Kim, Jeong-Kyu Park, Tae-Hyun Paik, and Eun-Kyeong Jo. "Interleukin-8 Is Differentially Expressed by Human-Derived Monocytic Cell Line U937 Infected with Mycobacterium tuberculosis H37Rv and Mycobacterium marinum." Infection and Immunity 71, no. 10 (October 2003): 5480–87. http://dx.doi.org/10.1128/iai.71.10.5480-5487.2003.

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ABSTRACT Although Mycobacterium marinum is closely related to Mycobacterium tuberculosis H37Rv genomically, the clinical outcome in humans is quite different for M. marinum and M. tuberculosis infections. We investigated possible factors in the host macrophages for determining differential pathological responses to M. tuberculosis and M. marinum using an in vitro model of mycobacterial infection. Using suppression-subtractive hybridization, we identified 12 differentially expressed genes in the human monocytic cell line U937 infected with M. tuberculosis and M. marinum. Of those genes, the most frequently recovered transcript encoded interleukin-8 (IL-8). Northern hybridization revealed that IL-8 mRNA was highly upregulated in M. tuberculosis-infected U937 cells compared with M. marinum-infected cells. In addition, enzyme-linked immunosorbent assay showed that IL-8 protein secretion was significantly elevated in M. tuberculosis-infected U937 cells, human primary monocytes, and monocyte-derived macrophages compared with that in M. marinum-infected cells. The depressed IL-8 expression was unique in M. marinum-infected cells compared with cells infected with other strains of mycobacteria, including M. tuberculosis H37Ra, Mycobacterium bovis BCG, or Mycobacterium smegmatis. When the expression of NF-κB was assessed in mycobacterium-infected U937 cells, IκBα proteins were significantly degraded in M. tuberculosis-infected cells compared with M. marinum-infected cells. Collectively, these results suggest that differential IL-8 expression in human macrophages infected with M. tuberculosis and M. marinum may be critically associated with distinct host responses in tuberculosis. Additionally, our data indicate that differential signal transduction pathways may underlie the distinct patterns of IL-8 secretion in cells infected by the two mycobacteria.
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Tønjum, T., D. B. Welty, E. Jantzen, and P. L. Small. "Differentiation of Mycobacterium ulcerans, M. marinum, and M. haemophilum: Mapping of Their Relationships to M. tuberculosis by Fatty Acid Profile Analysis, DNA-DNA Hybridization, and 16S rRNA Gene Sequence Analysis." Journal of Clinical Microbiology 36, no. 4 (1998): 918–25. http://dx.doi.org/10.1128/jcm.36.4.918-925.1998.

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Although Mycobacterium ulcerans, M. marinum, and M. haemophilum are closely related, their exact taxonomic placements have not been determined. We performed gas chromatography of fatty acids and alcohols, as well as DNA-DNA hybridization and 16S rRNA gene sequence analysis, to clarify their relationships to each other and to M. tuberculosis. M. ulcerans and M. marinum were most closely related to one another, and each displayed very strong genetic affinities toM. tuberculosis; they are actually the two mycobacterial species outside the M. tuberculosis complex most closely related to M. tuberculosis. M. haemophilum was more distinct from M. ulcerans and M. marinum, and it appeared to be as related to these two species as to M. tuberculosis. These results are important with regard to the development of diagnostic and epidemiological tools such as species-specific DNA probes and PCR assays for M. ulcerans,M. marinum, and M. haemophilum. In addition, the finding that M. ulcerans and M. marinum are more closely related to M. tuberculosis than are other pathogenic mycobacterial species suggests that they may be evaluated as useful models for studying the pathogenesis of M. tuberculosis. M. marinum may be particularly useful in this regard since strains of this species grow much more rapidly than M. tuberculosis and yet can cause systemic disease in immunocompromised hosts.
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Rybniker, Jan, Martina Wolke, Christiane Haefs, and Georg Plum. "Transposition of Tn5367 in Mycobacterium marinum, Using a Conditionally Recombinant Mycobacteriophage." Journal of Bacteriology 185, no. 5 (March 1, 2003): 1745–48. http://dx.doi.org/10.1128/jb.185.5.1745-1748.2003.

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ABSTRACT Mycobacterium marinum is a close relative of the obligate human pathogen Mycobacterium tuberculosis. As with M. tuberculosis, M. marinum causes intracellular infection of poikilothermic vertebrates and skin infection in humans. It is considered a valid model organism for the study of intracellular pathogenesis of mycobacteria. Low transformation efficiencies for this species have precluded approaches using mutant libraries in pathogenesis studies. We have adapted the conditionally replicating mycobacteriophage phAE94, originally developed as a transposon mutagenesis tool for M. tuberculosis, to meet the specific requirements of M. marinum. Conditions permissive for phage replication in M. tuberculosis facilitated highly efficient transposon delivery in M. marinum. Using this technique we succeeded in generating a representative mutant library of this species, and we conclude that TM4-derived mycobacteriophages are temperature-independent suicide vectors for M. marinum.
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El-Etr, Sahar H., Ling Yan, and Jeffrey D. Cirillo. "Fish Monocytes as a Model for Mycobacterial Host-Pathogen Interactions." Infection and Immunity 69, no. 12 (December 1, 2001): 7310–17. http://dx.doi.org/10.1128/iai.69.12.7310-7317.2001.

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ABSTRACT Mycobacterium marinum, a relatively rapid-growing fish and human pathogen, has become an important model for the investigation of mycobacterial pathogenesis. M. marinumis closely related to the Mycobacterium tuberculosiscomplex and causes a disease in fish and amphibians with pathology similar to tuberculosis. We have developed an in vitro model for the study of M. marinum virulence mechanisms using the carp monocytic cell line CLC (carp leukocyte culture). We found that fish monocytes can differentiate between pathogenic and nonpathogenic mycobacterial species. Interestingly, M. marinum enters fish monocytes at a 40- to 60-fold-higher rate thanMycobacterium smegmatis. In addition, M. marinum survives and replicates in fish monocytes whileM. smegmatis is killed. We also found that M. marinum inhibits lysosomal fusion in fish monocytes, indicating that these cells may be used to dissect the mechanisms of intracellular trafficking in mycobacteria. We conclude from these observations that monocytic cells from fish, a natural host for M. marinum, provide an extremely valuable model for the identification and characterization of mycobacterial virulence determinants in the laboratory.
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Smith, Jennifer, Joanna Manoranjan, Miao Pan, Amro Bohsali, Junjie Xu, Jun Liu, Kent L. McDonald, Agnieszka Szyk, Nicole LaRonde-LeBlanc, and Lian-Yong Gao. "Evidence for Pore Formation in Host Cell Membranes by ESX-1-Secreted ESAT-6 and Its Role in Mycobacterium marinum Escape from the Vacuole." Infection and Immunity 76, no. 12 (October 13, 2008): 5478–87. http://dx.doi.org/10.1128/iai.00614-08.

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ABSTRACT The ESX-1 secretion system plays a critical role in the virulence of M. tuberculosis and M. marinum, but the precise molecular and cellular mechanisms are not clearly defined. Virulent M. marinum is able to escape from the Mycobacterium-containing vacuole (MCV) into the host cell cytosol, polymerize actin, and spread from cell to cell. In this study, we have examined nine M. marinum ESX-1 mutants and the wild type by using fluorescence and electron microscopy detecting MCV membranes and actin polymerization. We conclude that ESX-1 plays an essential role in M. marinum escape from the MCV. We also show that the ESX-1 mutants acquire the ability to polymerize actin after being artificially delivered into the macrophage cytosol by hypotonic shock treatment, indicating that ESX-1 is not directly involved in initiation of actin polymerization. We provide evidence that M. marinum induces membrane pores ∼4.5 nm in diameter, and this activity correlates with ESAT-6 secretion. Importantly, purified ESAT-6, but not the other ESX-1-secreted proteins, is able to cause dose-dependent pore formation in host cell membranes. These results suggest that ESAT-6 secreted by M. marinum ESX-1 could play a direct role in producing pores in MCV membranes, facilitating M. marinum escape from the vacuole and cell-to-cell spread. Our study provides new insight into the mechanism by which ESX-1 secretion and ESAT-6 enhance the virulence of mycobacterial infection.
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El-Etr, Sahar H., Selvakumar Subbian, Suat L. G. Cirillo, and Jeffrey D. Cirillo. "Identification of Two Mycobacterium marinum Loci That Affect Interactions with Macrophages." Infection and Immunity 72, no. 12 (December 2004): 6902–13. http://dx.doi.org/10.1128/iai.72.12.6902-6913.2004.

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ABSTRACT Mycobacterium marinum is closely related to Mycobacterium tuberculosis, the cause of tuberculosis in humans. M. marinum has become an important model system for the study of the molecular mechanisms involved in causing tuberculosis in humans. Through molecular genetic analysis of the differences between pathogenic and nonpathogenic mycobacteria, we identified two loci that affect the ability of M. marinum to infect macrophages, designated mel 1 and mel 2. In silico analyses of the 11 putative genes in these loci suggest that mel 1 encodes secreted proteins that include a putative membrane protein and two putative transglutaminases, whereas mel 2 is involved in secondary metabolism or biosynthesis of fatty acids. Interestingly, mel 2 is unique to M. marinum and the M. tuberculosis complex and not present in any other sequenced mycobacterial species. M. marinum mutants with mutations in mel 1 and mel 2, constructed by allelic exchange, are defective in the ability to infect both murine and fish macrophage cell lines. These data suggest that the genes in mel 1 and mel 2 are important for the ability of M. marinum to infect host cells.
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Castillo Almeida, Natalia E., Pooja Gurram, and Omar Abu Saleh. "1384. Mycobacterium marinum Infection: 21 Years of Experience at a Tertiary-Care Hospital." Open Forum Infectious Diseases 6, Supplement_2 (October 2019): S502—S503. http://dx.doi.org/10.1093/ofid/ofz360.1248.

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Abstract Background Mycobacterium marinum is a slow-growing, non-tuberculous mycobacterium responsible for skin and soft-tissue infections (SSTIs), tenosynovitis, and osteomyelitis (OM). We conducted a retrospective study describing the risk, clinical course, and outcome of M. marinum infection. Methods Adult patients with culture-confirmed M. marinum infections were identified from the mycology laboratory at Mayo Clinic, Rochester from January 1998 to December 2018. M. marinum infection was defined as uncomplicated (limited to SST) and complicated (tenosynovitis, OM, or disseminated). Results Forty-six cases of culture-confirmed infection with M. marinum were included (Table 1). Only 16 cases (35%) reported a water exposure and 22 (48%) involved finger and/or hand trauma. The median time to diagnosis was 3.6 months. Most patients (76%) presented with uncomplicated M. marinum infection with skin lesions mainly localized in the upper limb (Table 2). QuantiFERON and PPD were positive in 4 (8%) and 2 (4%) cases, respectively. Granulomatous inflammation and positive special stains were noted in 34 (74%) and 11 (24%) cases, respectively. Cases with complicated M. marinum infection had a longer duration of symptoms and length of treatment (P < 0.05) (Table 3). Prior to diagnosis, 63% of patients received at least one antibiotic for bacterial SSTIs. More than 50% of the patients diagnosed with M. marinum received a one drug regimen and 8% did not initiate therapy. Median treatment duration was 4.4 months. Twenty-six cases (56%) had susceptibilities performed and treatment modifications were made in 10 cases (38%). From the patients that started therapy, 73% completed therapy and 33% were lost to follow up. Cured was achieved in 87% of cases that completed therapy, 2 cases (6%) had a recurrence, and only one patient with active malignancy had a positive blood culture and died. Twelve (44%) and 10 cases (37%) were cured with one and two-drug regimens, respectively. Conclusion Most patients with M. marinum infection present as an uncomplicated infection in the upper limb. Classical exposure was only suspected in a third of the cases. Patients with complicated M. marinum infection had a prolonged duration of symptoms and lengthy treatment. Most patients were successfully treated with a one and two-drug regimen. Disclosures All authors: No reported disclosures.
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Dissertations / Theses on the topic "M. marinum"

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Shirreff, Lisa M. "Characterization of an M. marinum Vaccine| Examination of Both Mucosal Immunity and Systemic Immunity in a Fish Model." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10163372.

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Mycobacterium marinum (Mm) shares at least 80% amino acid sequence identity with over 3,000 orthologous genes of Mycobacterium tuberculosis (Mtb) and is thus used as a surrogate pathogen for Mtb research. Our laboratory investigates mycobacteriosis using Japanese medaka ( Oryzias latipes) as an aquatic animal model. Mm disease presentation in medaka is similar to Mtb disease presentation in humans, including growth in macrophages, granulomatous lesions, and lifelong chronic disease. We have previously shown that a major route of infection in fish is through an oral route and have thus developed methods to infect medaka with Mm utilizing mosquito larvae as vectors. Recently, our lab was able to show that Mm is able to cross the gut epithelia of medaka in a relatively short-time frame and travel to the underlying submucosa. Therefore, Mm must have the ability to attach to the gut mucosal layer and evade killing by GALT immune cells. Mm is apparently able to exploit macrophages of the mucosal immune system to transport the bacteria to target organs like the head kidney, liver, and spleen for a systemic infection. Utilizing an Mm strain engineered to carry a deletion in the RD-1 region, known to include a number of virulence genes, our lab has shown that mucosal immunity against Mm can be induced in medaka. We have shown that exposure to the mutant RD-1 strain offers some protection against a chronic wild-type oral challenge. Since we know that mutant RD-1 can elicit a mucosal immune response, I tested to see if sensitizing mucosal immunity would also induce systemic immunity by first priming fish with mutant RD-1 and then subsequently challenging them with wild type Mm via an IP route. This thesis demonstrates that mucosal immunity is limited to the gut and thus does not appear to provide broad systemic immunity. Additionally, I tested to see if systemic vaccination would protect against a systemic virulent wild-type challenge by vaccinating and challenging fish via an IP route of infection. Results showed that systemic vaccination does not induce systemic immunity and thus does not protect against an IP injected virulent challenge. Collectively, results from this thesis have shown mutant RD-1 to only be effective as a vaccine against mycobacteriosis if given orally since it was shown to only induce a mucosal immune response and only be protective against an oral virulent wild type challenge.

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COLÍN, GARCÍA ANTONIO ALI. "MICOBACTERIOSIS EN PECES." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2019. http://hdl.handle.net/20.500.11799/105478.

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Tesis Licenciatura- titulación
El objetivo del presente trabajo fue reunir, analizar y presentar la información más relevante acerca de la infección causada por micobacteriosis en peces, su impacto en la producción y posibles efectos en salud pública. A nivel mundial las enfermedades de peces constituyen una amenaza para el desarrollo y sostenimiento de la acuicultura, ya que si aparecen de forma esporádica, periódica o sostenida limitan la producción. La micobacteriosis (tuberculosis húmeda) en peces o “micobacteriosis atípica” es una enfermedad crónica progresiva; afecta a un amplio rango de especies de agua dulce y salina, particularmente observada en peces de acuario, generando enfermedad crónica sistémica que tiende a formar granulomas externos e internos diseminados; sin embargo, ninguno de estos agentes produce una lesión o signo distintivo, por lo que se requiere hacer un diagnóstico confirmatorio en laboratorios especializados. En las micobacteriosis en peces provocada por micobacterias no tuberculosas (MNT): Mycobacterium marinum, M. chelonae y M. fortuitum, bacterias presentes en el ambiente acuático, la transmisión de la infección se da a través de lesiones en la piel, branquias e intestino, por consumo o contacto con animales o por protozoarios infectados; adicional a ello en peces vivíparos se ha demostrado una transmisión vertical. Sin embargo, el estrés de la manipulación, confinamiento y transporte se consideran como factores predisponentes de la enfermedad. En el hombre, los principales pacientes suelen ser personas mayores o debilitados y que típicamente están relacionados con la manipulación de peces y actividades recreacionales, y se conoce como “granuloma de las piscinas o de los acuarios”, ya que suelen producirse tras pequeños traumatismos cutáneos provocados en piscinas, albercas, estanques o acuarios, además de que de forma característica también existe el antecedente de lesiones con espinas de pescado o al manipular crustáceos. El proceso cutáneo es crónico y con un período de incubación de 2 a 8 semanas. En general suelen ser lesiones únicas, aunque en ocasiones se propagan y ascienden con una distribución lineal esporotricoide. En un tercio de los casos pueden invadir los tejidos profundos llegando a los tendones y los huesos. El diagnóstico de la micobacteriosis atípica se fundamenta en la sospecha clínica ante un historial clínico que sugiere exposición a fuentes de contagio o exposición, en donde pudieran estar presentes MNT. El diagnóstico de confirmación se realiza a partir de biopsias obtenidas de los órganos o tejidos con lesión nodular a los cuales se les practican estudios inmunohistoquímicos, histológicos y microbiológicos. Aunado a los aportes locales e internacionales que la piscicultura ofrece, en la actualidad esta actividad se enfrenta a una gran variedad de factores de riesgo que pueden afectar la productividad, entre los que se incluyen la incidencia y dispersión de enfermedades entre las poblaciones de peces, algunas de las cuales pueden tener importancia zoonótica como el caso de las MNT.
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Haouari, Tofigh-Philippe. "Evaluation du profil médical des appelés de la marine nationale au C. F. M. Hourtin en 1986 et 1987." Bordeaux 2, 1989. http://www.theses.fr/1989BOR25027.

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Maʻbadī, Mubārak Muḥammad Mubārak Ḥarashnī. "al-Nashāṭ al-tijārī li-Mīnāʼ Jiddah khilāla al-ḥukm al-ʻUthmānī al-thānī, 1256 H/1840 M-1335 H/1916 M." [Jiddah] : al-Nādī al-Adabī al-Thaqāfī bi-Jiddah, 1993. http://books.google.com/books?id=m0hIAAAAMAAJ.

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Tuzinaitė, Jurgita. "Erotikos sklaida M. Katiliškio romane „Miškais ateina ruduo“." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110803_090034-57575.

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K. Keblys knygoje „Lietuvių literatūra svetur 1945-1967“ pažymi, kad M. Katiliškio romanas „Miškais ateina ruduo“ (1957) kartu su tokių lietuvių literatūros kūrėjų, kaip A. Barono „Mėnesiena“ (1957) ir A. Škėmos „Balta drobulė“ (1958), veikalais išsiskyrė iš 1956-1959 m. parašytų kūrinių. Pirmųjų dviejų rašytojų romanai „įpūtė“ naujų vėjų į lietuvių literatūros erdvę. Tvirtinama, kad A. Škėmos „Baltos drobulės“ įnašas buvo didžiausias, ir 1956-1959 m. laikotarpis sietinas būtent su A. Škėmos romanu „Balta drobulė“. Bet M. Katiliškis lietuvių literatūros istorijoje išsiskiria šiuo savo romanu iš kitų rašytojų gretų dėl jame tvyrančios drąsios erotikos sklaidos. Šio darbo tema – Erotikos sklaida M. Katiliškio romane „Miškais ateina ruduo“. Temos pasirinkimą lėmė noras atskleisti lietuvių kūrėjo ir jo amžininkų požiūrį į erotiką, pažvelgti, kaip kiekvienas jų suvokė ir vaizdavo, atrodo, lietuvių tautai nepriimtinus (tabu), tačiau aktualius dalykus. Šio darbo tikslas – nagrinėti, analizuoti M. Katiliškio novelių romane „Miškais ateina ruduo“ erotikos sklaidą. Taip pat kaip kontekstą pasitelkiant Lazdynų Pelėdos „Klaida“ (1909), A. Kazio Puidos „Žemės giesmė“ (1911), J. Lindės-Dobilo „Blūdas arba Lietuva buvusios Rosijos revoliucijos mete“ (1912), Juozo Tumo-Vaižganto „Pragiedruliai. Vaizdai kovos dėl kultūros. Gondingos kraštas“ I T. (1918), Juozo Tumo-Vaižganto „Pragiedruliai. Vaizdai kovos dėl kultūros. Vaduvų kraštas“ (1920), A... [toliau žr. visą tekstą]
In the book “Lietuvių literatūra svetur 1945-1967” K. Keblys says, that the novel “Miškais ateina ruduo” (1957) by M. Katiliškis together with the works of such Lithuanian writers as “Mėnesiena” (1957) by A. Baronas and “Balta drobulė” (1958) by Škėma stood out from other works written in 1956-1959. The novels of the first two authors were breath fresh impetus in Lithuanian literature. The biggest contribution was of the novel “Balta drobulė” by A. Škėma and the period of 1956-1959 is associated with the novel “Balta drobulė” by A. Škėma. But M. Katiliškis with this novel stands out from other writers in Lithuanian literature because of its bold spread of eroticism. The topic of the thesis is the spread of eroticism in the novel “Miškais ateina ruduo” by M. Katiliškis. The selection of the topic was determined by the wish to reveal the attitude of the author and his contemporaries towards erotika, to see how each of them perceived and portrayed rather relevant subjects which seem unacceptable (taboo) subjects to Lithuanian nation. The aim of this paper is to investigate the spread of the eroticism in the novel “Miškais ateina ruduo” by M. Katiliškis. As a means of background taking the novel “Klaida” (1909) by Lazdynų Pelėda, “Žemės giesmė” (1911) by A. Kazys Puida, the novel “Blūdas, arba Lietuva buvusios Rosijos mete” (1912) by J. Lindė-Dobilas, “Pragiedruliai”. Vaizdai kovos dėl kultūros. Gondingos kraštas I T (1918) by Juozas Tumas-Vaižgantas... [to full text]
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Brambilla, Marina M. [Verfasser]. "Hans Egon Holthusen : Eine Darstellung seiner schriftstellerischen Tätigkeit / Marina M Brambilla." Aachen : Shaker, 2006. http://d-nb.info/117053841X/34.

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Brambilla, Marina [Verfasser]. "Hans Egon Holthusen : Eine Darstellung seiner schriftstellerischen Tätigkeit / Marina M Brambilla." Aachen : Shaker, 2006. http://nbn-resolving.de/urn:nbn:de:101:1-2018110407191300767169.

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Di, Bella Selenia <1990&gt. "Crocevia di memorie. Etnografia presso il Mercato di Piazza Marina a Palermo." Master's Degree Thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/18493.

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Il mercato come luogo sociale e culturale per eccellenza. La storia del mercato e il suo sviluppo attraverso le memorie e i vissuti dei mercatari e delle mercatare. Le esperienze degli acquirenti presso il mercato e i ricordi legati ad esso. Le relazioni degli oggetti. L'agency degli oggetti. Gli oggetti come: simboli identitarie, legami con le proprie origini, custodi di memorie.
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Zajnulina, Marina [Verfasser], and Martin M. [Akademischer Betreuer] Roth. "Optical frequency comb generation in optical fibres / Marina Zajnulina ; Betreuer: Martin M. Roth." Potsdam : Universität Potsdam, 2015. http://d-nb.info/1218400218/34.

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Sjöbom, Kristoffer, and Percan Magnus. "Energieffektivisering ombord M/S Sydfart : Med hjälp av solceller." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-34256.

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The goal of this paper is to find out how solar cells can improve energy efficiency on-board M/S Sydfart. The paper is based on a number of energy measurements on board the M/S Sydfart. The solar surface is calculated by measuring the available space for installing solar panels. Global radiation data is taken from STRÅNG's database, the data is then used to calculate the theoretical power produced by the solar cells. Energy efficiency is analysed in two ways. The first analysis focuses on how much of the daily energy usage that can be covered with solar cells. The second analysis focuses on the change of EEOI attainable with solar cells installed. The electrical energy consumption on-board M/S Sydfart, during the summer, is almost entirely covered with solar cells. The paper however shows some disadvantages. During the winter, the produced electrical energy from solar cells are low and an unreasonably large area of solar panels is required to cover the electricity demand. Two scenarios are evaluated. In scenario one, all the space available for the installation of photovoltaic panels is used. This gives a large energy surplus during summer. In scenario two, only half of the surface is used to install solar panel. This results in a smaller energy surplus without any significant loss of usable energy. Given that M/S Sydfart has limited ability to take advantage of energy surplus, the second scenario is recommended. The result shows that energy efficiency will be improved. Depending on the season, EEOI can be improved between 0.5 % and 12%. There is no demand for improvement in EEOI from IMO. It is up to the shipping companies themselves to set internal targets for improvement.
Målet med denna uppsats är att ta reda på hur solceller kan förbättra energieffektiviteten ombord M/S Sydfart. Uppsatsen baseras på ett antal energimätningar ombord M/S Sydfart. Solcellernas yta beräknas med hänsyn taget till tillgänglig yta för att installera solpaneler. Globalstrålningsdata kommer ifrån STRÅNG`s databas, den datan används sedan för att beräkna en teoretisk producerad effekt utav solcellerna. Energieffektiviteten analyseras på två sätt. Den första analysen ser på hur mycket av den dagliga energiförbrukningen som kan tillgodogöras med solceller. Den andra analysen baseras på hur stor för- ändring av EEOI som kan uppnås med installerade solceller. Elenergibehovet ombord M/S Sydfart, under sommarhalvåret, kan nästan helt täckas med solceller. Uppsatsen visar dock en del nackdelar med solceller. Under vinterhalvåret är den producerade elenergin från solcellerna låg och en orimligt stor yta solcellsmoduler behövs för att täcka elenergibehovet. Två scenarion utvärderas. I scenario ett utnyttjas all tillgänglig yta för installation av solcellsmoduler. Detta ger ett stort energiöverskott på sommarhalvåret. I scenario två halveras ytan för solcellsmoduler och energiöverskottet blir då mindre. Med hänsyn till att M/S Sydfart har begränsad möjlighet att ta till vara på energiöverskottet, rekommenderas scenario två. Resultatet visar att energieffektiviteten kommer att förbättras. Beroende på årstid, kan EEOI förbättras mellan 0.5% och 12 %. Något krav på förbättring av EEOI finns inte från IMO. Det är rederierna själva som sätter upp interna mål för förbättring.
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Books on the topic "M. marinum"

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Vassilopoulos, Peter. John M. Horton, mariner artist. Surrey, BC: Heritage House, 2007.

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Center, Goddard Space Flight, and United States. National Environmental Satellite, Data, and Information Service., eds. NOAA-M. Greenbelt, Md: National Aeronautics and Space Admninistration, Goddard Space Flight Center, 2002.

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Center, Goddard Space Flight, and United States. National Environmental Satellite, Data, and Information Service., eds. NOAA-M. Greenbelt, Md: National Aeronautics and Space Administration, Goddard Space Flight Center, 2002.

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Center, Goddard Space Flight, and United States. National Environmental Satellite, Data, and Information Service, eds. NOAA-M. Greenbelt, Md: National Aeronautics and Space Admninistration, Goddard Space Flight Center, 2002.

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United States. Coast Guard. Office of Marine Safety, Security, and Environmental Protection, ed. William M. Benkert Award. Washington, D.C. (2100 Second St., S.W., Washington 20593-0001): U.S. Coast Guard, Office of Marine Safety, Security, and Environmental Protection, 1996.

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Ulrich, Scholl Lars, ed. Merchants and mariners: Selected maritime writings of David M. Williams. St. John's, Nfld: International Maritime Economic History Association, 2000.

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Ulrich, Scholl Lars, and International Maritime Economic History Association., eds. Merchants and mariners: Selected maritime writings of David M. Williams. St. Johns, Newfoundland: International Maritime Economic History Association, 2000.

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Maʻbadī, Mubārak Muḥammad Mubārak al-Ḥarashnī, 1953 or 4-. al- Nashāṭ al-tijārī li-Mīnāʾ Jiddah: Khilāl al-ḥukum al-ʻUthmānī al-thānī, 1256 H/1840 M-1335 H/1916 M. Jiddah: al-Nādī al-ʻArabī al-Thaqāfī, 1993.

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Rita, Klimkienė, Andrikienė Daina Elena, Lithuania Aplinkos apsaugos ministerija, and Baltic Marine Environment Protection Commission., eds. 1992 m. Konvencija dėl Baltijos jūros baseino jūrinės aplinkos apsaugos. Vilnius: Lietuvos Respublikos Aplinkos apsaugos ministerija, 1997.

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al-Nashāṭ al-tijārī li-Mīnāʼ Jiddah: Khilāla al-ḥukm al-ʻUthmānī al-thānī, 1256 H/1840 M-1335 H/1916 M. [Jiddah]: al-Nādī al-Adabī al-Thaqāfī bi-Jiddah, 1993.

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Book chapters on the topic "M. marinum"

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Boakye-Appiah, Justice, Belinda Hall, Rajko Reljic, and Rachel E. Simmonds. "Current Progress and Prospects for a Buruli Ulcer Vaccine." In Vaccines for Neglected Pathogens: Strategies, Achievements and Challenges, 71–95. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24355-4_5.

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AbstractBuruli ulcer (BU), one of the skin-related neglected tropical diseases (skin NTDs), is a necrotizing and disabling cutaneous disease caused by subcutaneous infection with Mycobacterium ulcerans. Leading on from the World Health Organization’s (WHO) establishment of a global BU initiative in 1998, >67,000 cases of BU have been reported from over 32 countries, mostly from West Africa and Australia. While treatment is currently in the transition period from rifampicin plus streptomycin (injection) to an all-oral regimen, it cannot hope to eradicate this opportunistic environmental pathogen. M. ulcerans is genetically very similar to related pathogenic organisms M. marinum, M. leprae and M. tuberculosis. However, M. ulcerans carries a unique megaplasmid, pMUM001, encoding the biosynthetic machinery responsible for production of a lipid-like exotoxin virulence factor, mycolactone. This diffusible compound causes the substantial divergence in BU’s pathogenic aetiology from other mycobacterial infections. Hence, mycolactone is cytotoxic and immunosuppressive and causes vascular dysfunction in infected skin. A major recent advance in our understanding of BU pathogenesis has been agreement on the mycolactone’s mechanism of action in host cells, targeting the Sec61 translocon during a major step in secretory and membrane protein biogenesis. While vaccine development for all mycobacteria has been challenging, mycolactone production likely presents a particular challenge in the development of a BU vaccine. The live-attenuated vaccine BCG is known to provide only partial and transient protection in humans but provides a convenient baseline in mouse preclinical studies where it can delay, but not prevent, disease progression. No experimental vaccine strategy has yet conferred greater protection than BCG. However, there is now the prospect of developing a vaccine against mycolactone itself, which may provide hope for the future.
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Baretta-Bekker, Hanneke J. G., Egbert K. Duursma, and Bouwe R. Kuipers. "M." In Encyclopedia of Marine Sciences, 183–202. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-58831-0_13.

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Baretta-Bekker, Hanneke J. G., Egbert K. Duursma, and Bouwe R. Kuipers. "M." In Encyclopedia of Marine Sciences, 158–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-97361-1_13.

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Ben Dhiab, Rym, Rafika Challouf, Emna Derouiche, Hamdi Ben Boubaker, Wael Kouched, Mourad Attouchi, Hela Jaziri, and Sana Ben Ismail. "Beach macro-litter monitoring on Monastir coastal sea (Tunisia): First Findings." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 122–31. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.11.

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The macrolitter monitoring was investigated on 3 beaches on Monastir coastal (Palmier, Marina, Karaia) and on Kuriat Island during 4 seasons. The highest abundance and density of macrolitter were recorded on the beaches of Marina (13540 items/100m; 8.49 items m-2) and Karaia (6842 items/100m; 6.11 items m-2) during spring. According to Clean Coast Index, these 2 beaches were classified as extremely dirty whereas Kuriat Island was considered as very clean. Plastic items corresponded to the highest concentration of litter in studied sites and varying between 69% and 89% of total items. Cigarette butts are the most frequent type of debris
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Taşkın, Ergün, İbrahim Tan, Orkide Minareci, Ersin Minareci, Hakan Atabay, and Çolpan Polat-Beken. "The pressures and the ecological quality status of the Marmara Sea (Turkey) by using marine macroalgae and angiosperms." In Proceedings e report, 632–38. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.63.

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In the present study, the Marine Floristic Ecological Index (MARFEI) was tested to assess the impacts by using marine benthic macrophytes and pressures by using the Macroalgae-Land Uses Simplified Index (MA-LUSI) in the Marmara Sea (Turkey). Sampling of benthic macrophytes was made from 0-5 m depth at 29 different sites during the summer periods of 2017, 2018 and 2019. The study revealed good ecological status class (ESC) for 6 sites, moderate for 11 sites, poor for 8 sites and bad for 4 sites. MARFEIeqr showed a negative linear relationship with the pressure index MA-LUSI.
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Roxy, M. K., C. Gnanaseelan, Anant Parekh, Jasti S. Chowdary, Shikha Singh, Aditi Modi, Rashmi Kakatkar, et al. "Indian Ocean Warming." In Assessment of Climate Change over the Indian Region, 191–206. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4327-2_10.

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Abstract Sea surface temperature (SST) and upper ocean heat content (OHC, upper 700 m) in the tropical Indian Ocean underwent rapid warming during 1950–2015, with the SSTs showing an average warming of about 1 °C. The SST and OHC trends are very likely to continue in the future, under different emission scenarios. Climate models project a rise in tropical Indian Ocean SST by 1.2–1.6 °C and 1.6–2.7 °C in the near (2040–2069) and far (2070–2099) future across greenhouse gas (GHG) emissions scenarios RCP4.5 and RCP8.5, relative to the reference period of 1976–2005. Indian Ocean warming has very likely resulted in decreasing trend in oxygen (O2) concentrations in the tropical Indian Ocean, and declining trends in pH and marine phytoplankton over the western Indian Ocean. The observed trends in O2, pH and marine phytoplankton are projected to increase in the future with continued GHG emissions.
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Minnett, P. J. "Satellite Infrared Scanning Radiometers — AVHRR and ATSR/M." In Microwave Remote Sensing for Oceanographic and Marine Weather-Forecast Models, 141–63. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0509-2_7.

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Lubchenco, Jane, and Peter M. Haugan. "Coastal Development: Resilience, Restoration and Infrastructure Requirements." In The Blue Compendium, 213–77. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-16277-0_7.

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AbstractMore than 200 countries have a coastline, and this forms the basis for their claims to territorial waters and exclusive economic zones (EEZs). Globally, about 40% of the world’s population live within the “near coastal zone”—the area below an elevation of 100 metres (m) and closer than 100 kilometres (km) from the coast (Kummu et al. 2016). The vast majority of resources for current and emerging sectors that comprise the “ocean— or blue—economy” are concentrated along coastal areas within these EEZs and must operate within a complex, multiple-use and often space-constrained context. The near coastal zone is also where the majority of many coastal nations’ commercial, residential, transport and national defence infrastructure is situated, and it is the backbone to domestic and international supply chains that deliver the marine goods and services upon which we increasingly rely.
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Vega-Moreno, Daura, Bárbara Abaroa-Pérez, and J. Joaquín Hernández-Brito. "Analysis of Marine Microplastics in the Water Column Sampled up to 300 M Depth." In Springer Water, 139–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45909-3_22.

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Doyle, David M. "Whitecaps, 10-m Windspeed and Marine Aerosol Interrelationships as Observed During the 1980 Strex Experiment." In Oceanographic Sciences Library, 269. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4668-2_30.

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Conference papers on the topic "M. marinum"

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Beedel, R. "International Marine Accident Reporting Scheme M A R S: Lessons From Mars." In Learning From Marine Incidents. RINA, 1999. http://dx.doi.org/10.3940/rina.mi.1999.09.

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Muk-Pavic, E., and H. Vargas. "O&M (Operation & Maintenance) Access Systems For 3rd Generation Windfarms." In Marine Renewable & Offshore Wind Energy. RINA, 2010. http://dx.doi.org/10.3940/rina.mre.2010.21.

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Meftah, Khouane, Abdellatif Ouahsine, Hassan Smaoui, and Philippe Sergent. "Etude numérique pour la formation et la migration de structures sous-marines : application à la plage de Rousty." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2008. http://dx.doi.org/10.5150/jngcgc.2008.038-m.

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Mamindy-Pajany, Yannick, Charlotte Hurel, Nicolas Marmier, and Michèle Romeo. "Comportement de l’arsenic lors de la lixiviation d’un sédiment marin de dragage contaminé." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2008. http://dx.doi.org/10.5150/jngcgc.2008.073-m.

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Magnin, O., JC Dubois, and J. Meunier. "SHRIMP - Un nouvel équipement de sismique réfraction très haute résolution pour la reconnaissance en continu des fonds marins." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 1992. http://dx.doi.org/10.5150/jngcgc.1992.007-m.

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Castro, Matheus Dias de, Pedro Pimenta Menezes, Marcos dos Santos, Luiz Frederico Horácio de S. de B. Teixeira, and Carlos Francisco Simões Gomes. "APLICAÇÃO DO MÉTODO SAPEVO-M PARA SELEÇÃO DE UM SISTEMA TMS PARA UMA TRANSPORTADORA." In XIX Simpósio de Pesquisa Operacional & Logística da Marinha. São Paulo: Editora Blucher, 2020. http://dx.doi.org/10.5151/spolm2019-054.

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MAZEIRAUD, Vincent, Jacques VIGUIER, Osanne PAIREAU, Didier RIHOUEY, Damien DAILLOUX, and Jérémy DUGOR. "Protection du littoral de Valras-Plage et de Vendres (Hérault) par une digue sous-marine : suivi des évolutions du trait de côte un an après réalisation." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2010. http://dx.doi.org/10.5150/jngcgc.2010.069-m.

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Santos, Marcos dos, Nathália Campos de Oliveira, Pamela Ferreira Carvalho de Oliveira, and Carlos Francisco Simões Gomes. "APLICAÇÃO DO MÉTODO MULTICRITÉRIO SAPEVO-M NA SELEÇÃO DE EQUIPAMENTOS: ESTUDO DE CASO EM UMA PANIFICADORA DO RJ." In XIX Simpósio de Pesquisa Operacional & Logística da Marinha. São Paulo: Editora Blucher, 2020. http://dx.doi.org/10.5151/spolm2019-053.

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Alves, Camila Guimarães M. de F., Marcos dos Santos, and Carlos Francisco Simões Gomes. "SELEÇÃO DE UMA LÂMPADA DE FILAMENTO EM UMA EMPRESA DE ILUMINAÇÃO DECORATIVA: UMA APLICAÇÃO DO MÉTODO MULTICRITÉRIO SAPEVO-M." In XIX Simpósio de Pesquisa Operacional & Logística da Marinha. São Paulo: Editora Blucher, 2020. http://dx.doi.org/10.5151/spolm2019-186.

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Goundar, Jai N., Deepak D. Prasad, and Mohammed Rafiuddin Ahmed. "Design of a Ducted Cross-Flow Turbine for Marine Current Energy Extraction." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87324.

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Marine current energy is a clean energy source and is a solution to the problems faced by burning fossil fuels such as global warming and climate change. Once tapped, the useful shaft power can be converted into electrical energy. To make this practical, the designed energy converter should be capable of operating at low marine current velocities, it should be suitable for installation at locations that have low water depths and should have lower manufacturing, installation and maintenance costs. A ducted cross-flow turbine has all the above features and it will be suitable for Pacific Island countries (PICs) for extracting marine current energy. The ducted cross-flow turbine was designed, modelled and analyzed in commercial Computational Fluid dynamic (CFD) code ANSYS-CFX. The inlet and outlet duct sizes were optimized for maximum output. Before the analysis of full model, the CFD results were validated with experimental results. Simulations for the 1:10 ducted cross-flow turbine (having a diameter of 150 mm) were performed with 400,000 nodes, as increase in the grid size did not make much difference other than increasing the simulation time significantly. The maximum difference in the power coefficient between CFD and experimental results was 6%. Simulations were then performed for the full-scale prototype, which has a duct (nozzle) inlet of 3.5 m × 3.5 m and a turbine diameter of 1.5 m, at three freestream velocities of 0.65 m/s, 1.95 m/s and 3.25 m/s. Analysis of the prototype performance showed that the ducted cross-flow turbine can reach a maximum efficiency of 56% and can produce 21.5 kW of power at a current speed of 1.95 m/s and 103.6 kW at 3.25 m/s. The designed cut-off speed was 4 m/s.
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Reports on the topic "M. marinum"

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Kerr, D. E. Reconnaissance surficial geology, Mara River, Nunavut, 76-K. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329667.

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The Mara River map area consists of extensive glacially and meltwater scoured bedrock, deposits of hummocky till, fluted till blanket, and till veneer throughout the map area, glaciofluvial sediments within major river valleys, and postglacial marine sediments in coastal lowlands. The boundaries of many till deposits were eroded to bedrock by proglacial and subglacial meltwater, and locally northwest-trending corridors are defined by eskers. Glacially dammed lakes, associated with deltas between 450 m and 230 m elevation, occupied some river valleys where retreating or stagnant ice impeded drainage to the east and north. Striations and streamlined landforms indicate a north-northwestward regional ice flow in the eastern and northern regions, diverging to a west-southwestward flow in the western regions. A series of glaciomarine and marine deltas, and fine-grained sediments record the marine incursion up to 200 m elevation. Isostatic rebound caused marine regression, forming deltas between 200 m and 60 m, and raised beaches from 150 m elevation to current sea level.
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Arcone, Steven, James Lever, Laura Ray, Benjamin Walker, Gordon Hamilton, and Lynn Kaluzienski. Ground-penetrating radar profiles of the McMurdo shear zone, Antarctica, acquired with an unmanned rover : interpretation of crevasses, fractures, and folds within firn and marine ice. Engineer Research and Development Center (U.S.), December 2021. http://dx.doi.org/10.21079/11681/42620.

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The crevassed firn of the McMurdo shear zone (SZ) within the Ross Ice Shelf may also contain crevasses deep within its meteoric and marine ice, but the surface crevassing prevents ordinary vehicle access to investigate its structure geophysically. We used a lightweight robotic vehicle to tow 200- and 40 MHz ground-penetrating radar antennas simultaneously along 10 parallel transects over a 28 km² grid spanning the SZ width. Transects were generally orthogonal to the ice flow. Total firn and meteoric ice thickness was approximately 160 m. Firn crevasses profiled at 400 MHz were up to 16 m wide, under snow bridges up to 10 m thick, and with strikes near 35°–40° to the transect direction. From the top down, 200- MHz profiles revealed firn diffractions originating to a depth of approximately 40 m, no discernible structure within the meteoric ice, a discontinuous transitional horizon, and at least 20 m of stratified marine ice; 28–31 m of freeboard found more marine ice exists. Based on 10 consecutive transects covering approximately 2.5 km², we preliminarily interpreted the transitional horizon to be a thin saline layer, and marine ice hyperbolic diffractions and reflections to be responses to localized fractures, and crevasses filled with unstratified marine ice, all at strikes from 27° to 50°. We preliminarily interpreted off nadir, marine ice horizons to be responses to linear and folded faults, similar to some in firn. The coinciding and synchronously folded areas of fractured firn and marine ice suggested that the visibly unstructured meteoric ice beneath our grid was also fractured, but either never crevassed, crevassed and sutured without marine ice inclusions, or that any ice containing crevasses might have eroded before marine ice accretion. We will test these interpretations with analysis of all transects and by extending our grid and increasing our depth ranges.
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Kerr, D. E. Reconnaissance surficial geology, Arctic Sound, Nunavut, NTS 76-N. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/321440.

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The Arctic Sound map area consists primarily of glacially scoured bedrock, minor till in the southwest, and postglacial marine sediments in coastal lowlands and inland along river valleys. The till deposits are cut to bedrock by subglacial meltwater corridors defined by eskers and other glaciofluvial sediments. Glacial lakes occupied the James River valley where retreating or stagnant ice blocked drainage to the east. Glaciolacustrine deltas record falling lake levels, from 310 m to 290 m and 260 m elevation. Striations and streamlined landforms indicate ice flow to the north-northwest, and later crosscutting relationships recording minor variations locally. Orientation of minor moraines, eskers, and outwash plains suggest ice recession was primarily southeastward. A series of small glaciomarine deltas following a northwest-southeast trend, and postglacial marine deltas and fine-grained sediments, reach elevations of 210 m in the northwest and 200 m in the southeast. Isostatic rebound caused marine regression, forming raised beaches from 210 m elevation to current sea level.
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Midwinter, D., T. Hadlari, and K. Dewing. Upper Triassic to Lower Jurassic stratigraphy along the northeastern margin of the Sverdrup Basin, Axel Heiberg and Ellesmere islands, Nunavut: new data from measured sections. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329398.

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Two stratigraphic sections were measured through Late Triassic - Early Jurassic aged strata in the Blue Mountains map area (NTS 340-B/11) on Ellesmere Island and the Depot Point map area (NTS 049-G/7) on Axel Heiberg Island. These sections are subdivided in terms of established member and formation names based on previous mapping along the north-eastern margin of the Sverdrup Basin. The lowermost strata in the Heiberg Formation, the Romulus Member (510-575 m thick), is a coarsening-upward succession of mudstone to fine-grained sandstone from a prodelta to delta plain environment. The overlying Fosheim Member (317-425 m) is a coal-bearing and sandstone-rich interval from a mixed alluvial-marine environment, such as a delta plain. It is overlain by the Remus Member (100-112 m); a sandstone-rich unit representative of shallow marine deposits. The Heiberg Formation at Depot Point is of similar thickness (1009 m) to the Blue Mountains (1035 m) and may represent a marginally more distal basinal setting with a thinner Fosheim Member but a slightly thicker Romulus and Remus members.
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Dredge, L. A. Reconnaissance surficial geology, Joe Lake north, Nunavut, NTS 66-J north. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329417.

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The northwest part of the Joe Lake North map area is dominated by glaciated granitic and gneissic bedrock, and small lake basins. The remainder of the area is gently rolling terrain consisting of a major north-trending drumlin field, four esker systems, and marine deposits that lie between the drumlins. Postglacial marine deposits occupy much of the terrain in the north part of the map area. The limit of postglacial marine submergence is at about 180 m a.s.l. in the southwest, and at about 170 m elsewhere, as determined by wave-washed trimlines on drumlins, and several ice-contact deltas on eskers. Well formed beaches are rare, but drumlins have been reworked to varying degrees. Those at higher elevations in the south have been only slightly modified by postglacial seas, whereas those at lower elevations in the north are covered by a veneer of marine deposits.
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Kerr, D. E. Reconnaissance surficial geology, Tinney Hills, Nunavut, NTS 76-J. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/321821.

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The Tinney Hills map area consists primarily of glacially and meltwater scoured bedrock, discontinuous till in the southwest and central-east, and postglacial marine sediments in coastal lowlands and along river valleys inland. The boundaries of many till deposits are cut to bedrock by widespread subglacial meltwater erosion. Ridged till in particular, is often associated with eskers and other glaciofluvial sediments and meltwater erosion. Striations and streamlined till landforms indicate regional ice flow towards the north-northwest and northwest, and later crosscutting relationships recording minor variations locally. Orientation of eskers and outwash plains suggest ice recession was primarily southeastward. Small, isolated glacial lakes formed where retreating or stagnant ice temporarily blocked local drainage. Below 200 to 220 m elevation, the region was inundated by the sea during ice retreat. Glaciomarine and marine sediments consist of littoral beach and offshore sediments, winnowed till surfaces, and isolated deltas. Isostatic rebound caused marine regression, recorded by deltas and beaches at 210 to 220 m elevation, and decreasing to current sea level.
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Kerr, D. E. Reconnaissance surficial geology, Brichta Lake, Nunavut, NTS 76-P. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329670.

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Preliminary surficial geology studies, based on air photo interpretation and limited legacy field data in the Brichta Lake map area, provide an understanding of the distribution and nature of surficial materials, and regional glacial history. The terrain is characterized by extensive glacial and meltwater scouring that has affected bedrock outcrops, and eroded hummocky and streamlined till, till blankets, and till veneers in the southwest regions. Streamlined bedrock and till landforms indicate ice flow towards the northwest and north-northwest during the last glaciation. Subglacial meltwater corridors and broader erosional zones, trending north-northwest, consisting of eskers, washed till veneer, ridged till, and scoured bedrock, result from late-phase ablation of the ice sheet during deglaciation. Glaciomarine and postglacial marine sediments extend discontinuously inland from the Queen Maud Gulf to 200 m a.s.l. elevation, notably up Tingmeak and Ellice rivers and their tributaries. In some eastern parts of the map area below 160 m a.s.l. elevation, thick marine deposits form plains that blanket broad shallow valleys.
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Kerr, D. E. Reconnaissance surficial geology, Beechey Lake, Nunavut, NTS 76-G. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329669.

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Preliminary mapping studies of Beechey Lake map area, through aerial photograph interpretation and limited legacy data, improve our understanding of surficial sediments and glacial history. The area is dominated by glacially and meltwater-scoured bedrock, hummocky moraine, till of varying thickness occasionally streamlined, and thin ridged till. Glacial lake sediments are predominantly in river valley lowlands. Glaciolacustrine delta and raised beach elevations range from 410 m to 230 m and 440 m to 290 m, respectively. Glaciofluvial deposits consist of eskers, ice-contact mounds, proglacial outwash plains, and terraces. Basal meltwater from regional ice stagnation and downwasting scoured subglacial and proglacial meltwater corridors and channels of varying width, many trending northwest. A glaciomarine delta was deposited in a high-sea marine environment following deglaciation in the northernmost map area. Streamlined till and bedrock landforms and striations indicate regional ice flow was dominantly northwest. A late westward and southwestward deglacial ice flow is preserved sporadically in the easternmost map area, and well preserved in the west-central and southwestern map areas, west of a discontinuous hummocky moraine belt.
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Jabado, Rima, Emiliano García-Rodríguez, Peter Kyne, Ryan Charles, Adriana Gonzalez Pestana, Mark Priest, Amanda Battle-Morera, and Giuseppe Notarbartolo di Sciara. ISRA Region 12 - Central and South American Pacific region: A compendium of Important Shark and Ray Areas. IUCN Species Survival Commission Shark Specialist Group, March 2023. http://dx.doi.org/10.59216/ssg.isra.2023.r12.

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The first Important Shark and Ray Areas (ISRA) regional expert workshop was held in hybrid mode (in person and online) in Bogotá, Colombia from 3–7 October 2022. The goal was to identify and delineate three dimensional and discrete portions of habitat that are critical to the survival of sharks, rays, and chimaeras, and that have the potential to be managed for conservation. The region covered was the Central and South American Pacific, from the Gulf of California in Mexico to southern Chile. This scientific collaboration amongst regional and global experts resulted in the identification of 65 Important Shark and Ray Areas, 5 candidate ISRAs, and 11 Areas of Interest. Identified ISRAs range in size from small underwater areas of 1.59 km2 at depths of 1,650–1,700 m (Northern Galápagos Hydrothermal Vents ISRA) to large areas of 3,191,603 km2 (Eastern Tropical Pacific Marine Corridor ISRA) from surface waters to a depth of 1,928 m. This compendium provides an overview of all areas delineated.
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Ray, Laura, Madeleine Jordan, Steven Arcone, Lynn Kaluzienski, Benjamin Walker, Peter Ortquist Koons, James Lever, and Gordon Hamilton. Velocity field in the McMurdo shear zone from annual ground penetrating radar imaging and crevasse matching. Engineer Research and Development Center (U.S.), December 2021. http://dx.doi.org/10.21079/11681/42623.

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The McMurdo shear zone (MSZ) is strip of heavily crevassed ice oriented in the south-north direction and moving northward. Previous airborne surveys revealed a chaotic crevasse structure superimposed on a set of expected crevasse orientations at 45 degrees to the south-north flow (due to shear stress mechanisms). The dynamics that produced this chaotic structure are poorly understood. Our purpose is to present our field methodology and provide field data that will enable validation of models of the MSZ evolution, and here, we present a method for deriving a local velocity field from ground penetrating radar (GPR) data towards that end. Maps of near-surface crevasses were derived from two annual GPR surveys of a 28 km² region of the MSZ using Eulerian sampling. Our robot-towed and GPS navigated GPR enabled a dense survey grid, with transects of the shear zone at 50 m spacing. Each survey comprised multiple crossings of long (> 1 km) crevasses that appear in echelon on the western and eastern boundaries of the shear zone, as well as two or more crossings of shorter crevasses in the more chaotic zone between the western and eastern boundaries. From these maps, we derived a local velocity field based on the year-to-year movement of the same crevasses. Our velocity field varies significantly from fields previously established using remote sensing and provides more detail than one concurrently derived from a 29-station GPS network. Rather than a simple velocity gradient expected for crevasses oriented approximately 45 degrees to flow direction, we find constant velocity contours oriented diagonally across the shear zone with a wavy fine structure. Although our survey is based on near-surface crevasses, similar crevassing found in marine ice at 160 m depth leads us to conclude that this surface velocity field may hold through the body of meteoric and marine ice. Our success with robot-towed GPR with GPS navigation suggests we may greatly increase our survey areas.
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