1,724,153 research outputs found
Roberts, F, 6380
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/413544Surname: ROBERTS. Given Name(s) or Initials: F. Military Service Number or Last Known Location: 6380. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 32708.232254
Item: [2016.0049.45805] "Roberts, F, 6380
Lignin biomarkers as tracers of mercury sources in lakes water column
Get PDFThis study presents the role of specific terrigenous organic compounds as important vectors of mercury (Hg) transported from watersheds to lakes of the Canadian boreal forest. In order to differentiate the autochthonous from the allochthonous organic matter (OM), lignin derived biomarker signatures [Lambda, S/V, C/V, P/(V ? S), 3,5-Bd/V and (Ad/Al)v] were used. Since lignin is exclusively produced by terrigenous plants, this approach can give a non equivocal picture of the watershed inputs to the lakes. Moreover, it allows a characterization of the source of OM and its state of degradation. The water column of six lakes from the Canadian Shield was sampled monthly between June and September 2005. Lake total dissolved Hg concentrations and Lambda were positively correlated, meaning that Hg and ligneous inputs are linked (dissolved OM r2 = 0.62, p\0.0001; particulate OM r2 = 0.76, p\0.0001). Ratios of P/(V ? S) and 3,5-Bd/V from both dissolved OM and particulate OM of the water column suggest an inverse relationship between the progressive state of pedogenesis and maturation of the OM in soil before entering the lake, and the Hg concentrations in the water column. No relation was found between Hg levels in the lakes and the watershed flora composition—angiosperm versus gymnosperm or woody versus non-woody compounds. This study has significant implications for watershed management of ecosystems since limiting fresh terrestrial OM inputs should reduce Hg inputs to the aquatic systems. This is particularly the case for largescale land-use impacts, such as deforestation, agriculture and urbanization, associated to large quantities of soil OM being transferred to aquatic systems
Evaluación geomecánica de la masa rocosa para la explotación del tajo 6380 NV. 2910 Compañía Minera Poderosa – 2020
Get PDFLa investigación planteó resolver el siguiente problema general: ¿Cuál es el
resultado de la evaluación geomecánica de la masa rocosa para la explotación
del tajo 6380 Nv.2910 compañía minera Poderosa - 2020? El objetivo general
fue analizar el resultado de la evaluación geomecánica de la masa rocosa para
la explotación del tajo 6380 Nv.2910 compañía minera Poderosa – 2020,
planteándose como hipótesis lo siguiente: la evaluación geomecánica de la masa
rocosa que comprende las propiedades físicas, mecánicas de la roca intacta y
las propiedades de las discontinuidades tiene relación directa con la explotación
del tajo 6380 Nv.2910. La muestra no probabilística y por consiguiente no
aleatoria estuvo conformada por el tajo 6380 Nv.2910 de la compañía minera
Poderosa - 2020
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Determination of optimal growth phase and inoculum size of proteus vulgaris (ATCC 6380) for long term storage of stock culture / Hafidzatul Aduwiyah Isam
Get PDFPure culture is essential to study about bacterial strain’s characteristics to diagnose disease associated with Proteus vulgaris infection such as nosocomial and human urinary tract infection. The purity status of bacteria is problematic in the Microbiology laboratory as it is often contaminated. Every year, the Centre of Medical Laboratory Technology in Universiti Teknologi MARA Puncak Alam purchases stock culture of P. vulgaris (ATCC 6380) from American Type Cell Culture (ATCC) in the United State which is expensive. The purpose of this study is to prepare pure stock culture of Proteus vulgaris (ATCC 6380) as a preservation method to maintain the viability of microorganisms for long term storage and use. The initial stock of P. vulgaris (ATCC 6380) was obtained from available P. vulgaris (ATCC 6380) stock in microbiology laboratory at FSK, UiTM Puncak Alam. Subculture of P. vulgaris (ATCC 6380) on 5% sheep blood agar and MacConkey agar was performed followed by identification and confirmation test. P. vulgaris (ATCC 6380) maintained as non-lactose fermenter, and give positive reaction in indole, motility, methyl red, phenylalanine deaminase and urea reactions. Preparation of stock culture was done through determination of optimal growth phase and inoculum size of Proteus vulgaris (ATCC 6380) to harvest cell for storage in glycerol stock and microbeads at 4⁰C, -20⁰C and -80⁰C. Bacterial growth curve of absorbance (OD 600nm) against incubation time (hours) in fresh TSB was performed to harvest cell at exponential phase. Bacterial colony count was performed to determine the suitable inoculum size of Proteus vulgaris (ATCC 6380) for storage. Stock culture of P. vulgaris (ATCC 6380) was made from cells harvested at OD 600nm of 1.645 with optimum inoculum size of 24.0X108 cfu/ml. The recovery potential of Proteus vulgaris (ATCC 6380) was determined by culturing on 5% sheep blood agar plate and performing biochemical tests to confirm the purity of colony. After one-month storage, stock cultures of P. vulgaris (ATCC 6380) in glycerol were successfully recovered at all temperature and in microbeads at -80°C. However, P. vulgaris from microbeads stored at -20⁰C cannot recovered as pure colony due to contamination of S. aureus. In conclusion, stock culture at all temperature can be recovered as pure colony except for microbeads at -20⁰C due to contamination caused by improper technique during recovery of P. vulgaris (ATCC 6380) stock cultures. The method used to perform pure and viable stock culture was effective but contamination being the only problem
[Denver & Salt Lake R R, Engine Drawing Card, Sketch No. 6380]
No full textThis engine drawing card was created for Denver & Salt Lake Railroad, Class 14 40/64 DD. Section J-14-DD. Sketch 6380. Copy Spec. 3372
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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