66,901 research outputs found
M. G. Anderson, D. E. Walling, P. D. Bates (Eds.) - Floodplain processes
No full textPiégay Hervé. M. G. Anderson, D. E. Walling, P. D. Bates (Eds.) - Floodplain processes. In: Géomorphologie : relief, processus, environnement, Juin 1997, vol. 3, n°2. pp. 190-191
Heat tolerance, behavioural temperature selection and temperature-dependent respiration in larval Octopus huttoni
No full textThis study reports temperature effects on paralarvae from a benthic octopus species, Octopus huttoni, found throughout New Zealand and temperate Australia. We quantified the thermal tolerance, thermal preference and temperature-dependent respiration rates in 1–5 days old paralarvae. Thermal stress (1 °C increase h?1) and thermal selection (?10–24 °C vertical gradient) experiments were conducted with paralarvae reared for 4 days at 16 °C. In addition, measurement of oxygen consumption at 10, 15, 20 and 25 °C was made for paralarvae aged 1, 4 and 5 days using microrespirometry. Onset of spasms, rigour (CTmax) and mortality (upper lethal limit) occurred for 50% of experimental animals at, respectively, 26.0±0.2 °C, 27.8±0.2 °C and 31.4±0.1 °C. The upper, 23.1±0.2 °C, and lower, 15.0±1.7 °C, temperatures actively avoided by paralarvae correspond with the temperature range over which normal behaviours were observed in the thermal stress experiments. Over the temperature range of 10 °C–25 °C, respiration rates, standardized for an individual larva, increased with age, from 54.0 to 165.2 nmol larvae?1 h?1 in one-day old larvae to 40.1–99.4 nmol h?1 at five days. Older larvae showed a lesser response to increased temperature: the effect of increasing temperature from 20 to 25 °C (Q10) on 5 days old larvae (Q10=1.35) was lower when compared with the 1 day old larvae (Q10=1.68). The lower Q10 in older larvae may reflect age-related changes in metabolic processes or a greater scope of older larvae to respond to thermal stress such as by reducing activity. Collectively, our data indicate that temperatures >25 °C may be a critical temperature. Further studies on the population-level variation in thermal tolerance in this species are warranted to predict how continued increases in ocean temperature will limit O. huttoni at early larval stages across the range of this species
Thermal limits to the geographic distributions of shallow-water marine species
No full textTemperature profoundly affects species’ geographic ranges, but the extent to which it limits contemporary range edges has been difficult to assess from laboratory experiments of thermal tolerance. The persistence of populations depends on temperature-mediated outcomes of ecological and demographic processes across all stages of a species’ life history, as well as any adaptation to local temperature regimes. We assessed the relationships between sea temperature and observed distributional ranges for 1,790 shallow-water marine species from 10 animal classes and found remarkable consistencies in trends in realized thermal limits among taxa and ocean basins, as well as general agreement with previous laboratory findings. Realized thermal niches increase from the Equator towards cold–temperate locations, despite an opposite trend in geographic range size. Species’ cool distribution limits are best predicted by the magnitude of seasonality within their range, while a relatively firm thermal barrier exists on the equatorward range edge for temperate species. Our findings of consistencies in realized thermal limits indicate potential limits to adaptation among common marine species and highlight the value of realized thermal niches for predicting species’ distributional dynamics in warming seas
IC084: Interview with Colonel William B. Bates, Part 3 of 3
No full textCol. Bates discusses further the relationships of the M. D. Anderson Foundation and the institutions in the Texas Medical Center. He speaks of Dr. E. W. Bertner and Dr. R. Lee Clark. Col. Bates then turns to his interest in education and Texas History. He describes the evolution of the University of Houston and his participation in the San Jacinto historical Association. A discussion of the involvement of the Houston Chamber of Commerce in the development of the Texas Medical Center concludes the series. See more at Texas Medical Center Historical Resources Project Records and its finding aid
Amineoxidase: Thermosensitizing activity of the oxidation products of spermine and its potential in cancer treatment.
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Series 10, Section 3: Envelope of 6 letters written by Mrs. Bates to Mr. Artlett
No full textScanned from the copies held by Rare Books and Special Collections as part of the Daisy Bates Papers, MSS 572.994 B32tThe Barr Smith Library recognises the moral rights of Aboriginal and Torres Strait Islander peoples as the owners of their knowledge. To this end, Special Collections is digitising the Daisy Bates Papers in our collections to enhance access for people who cannot travel to Adelaide. Please be aware that this site may contain sensitive information, including the names and images of people who have passed away and which may sadden and distress some Aboriginal people. This site may also contain language and terms used by an author that reflect an inappropriate attitude due to the historical context in which these records were created.Given by the Commonwealth Railways, Port Augusta to the Daisy Bates Memorial Committee and by the Committee to the Barr Smith Library to add to Mrs. Bates' papers.Envelope of 6 letters written by DMB to Mr Artlett given by the Commonwealth Railways, Port Augusta to the Daisy Bates Memorial Committee and by the Committee to the Barr Smith Library
A: More and more people were coming in to Ooldea Waters until there were 30-40. Daisy Bates requests Mr Artlett to forbid the natives access to any water at the siding as they were stealing water and she wanted them to go further to get their water from the soak.
B: DMB requests that Mr Artlett obtain a “certificate” for her from the S.A. Government so that it would “lessen the strain on my purse” in the feeding and clothing of the people at the Siding.
DMB also suggests the steady evacuation of the Great Aboriginal Reserve so that it may be used as pastoral land. She estimates the numbers of native people in that area as being around 2000, wandering between Hermannsburg and east of the W.A. Goldfields, seeking a water supply at Ooldea and never returning to their ancestral lands.
C: DMB thanks Mr Artlett for presenting her with a handcart named Augusta, to be used for hauling water and supplies over the mile from siding to camp.
D: DMB requests Mr Artlett to ask someone to repair Augusta’s wheel as had been accidentally damaged when traversing a water pipe. She also mentions that she had a narrow escape from a fire and was building new break-winds in the very high summer temperatures.
E: DMB thanks her benefactor for the repairs to Augusta.
F: DMB writes that she enjoys the proximity to Fettler Pauncefort and his wife and that she will ask him to show her where to oil Augusta with the bicycle oil she has bought for the purpose. She mentions that she measured a fall close to 2” of rain on 6 February
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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