Relevant bibliographies by topics / Mallaby, A W

Academic literature on the topic 'Mallaby, A W'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Mallaby, A W"

1

Buchan, Kenneth L., Anthony N. LeCheminant, and Otto van Breemen. "Malley diabase dykes of the Slave craton, Canadian Shield: U–Pb age, paleomagnetism, and implications for continental reconstructions in the early Paleoproterozoic1Geological Survey of Canada Contribution 20110114." Canadian Journal of Earth Sciences 49, no. 2 (February 2012): 435–54. http://dx.doi.org/10.1139/e11-061.

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The NE-trending Malley dyke swarm, dated herein at 2231 ± 2 Ma (U–Pb baddeleyite), extends from the central Slave craton to the vicinity of the Kilohigok basin, and may continue farther to the northeast as the geochemically similar Brichta dyke swarm, having been offset sinistrally along the prominent Bathurst fault. It carries a characteristic high unblocking temperature paleomagnetic component of single polarity directed up SE (mean direction: D = 138.3°, I = –53.8°), with corresponding paleopole at 50.8°S, 50.0°W. Lower unblocking temperature components, in some cases directed down SE, similar to ca 1.75 Ga post-Hudsonian overprints, are easily removed using combined alternating field (AF) thermal demagnetization, but difficult to remove using AF cleaning alone. The characteristic remanence has not been demonstrated primary, but is significantly older than 2.03 Ga, the age of Lac de Gras dykes, based on a baked contact test at a Lac de Gras – Malley dyke intersection. In addition, an E- to ESE-trending dyke carries a down WNW remanence, typical of 2.19 Ga Dogrib dykes near Yellowknife, suggesting that regional overprinting has not affected the study area since Dogrib emplacement, and that the Malley remanence was acquired at or shortly after Malley emplacement. Comparing Malley and Lac de Gras paleopoles with the 2.22–2.00 Ga Superior craton apparent polar wander path indicates that the two cratons were (i) not in their present relative orientation at 2.23 or 2.03 Ga, and (ii) likely not drifting in close proximity to one another as parts of a single (super)continent throughout the 2.23–2.03 Ga interval.
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2

Williamson, M. R., K. P. Dial, and A. A. Biewener. "Pectoralis muscle performance during ascending and slow level flight in mallards (Anas platyrhynchos)." Journal of Experimental Biology 204, no. 3 (February 1, 2001): 495–507. http://dx.doi.org/10.1242/jeb.204.3.495.

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In vivo measurements of pectoralis muscle length change and force production were obtained using sonomicrometry and delto-pectoral bone strain recordings during ascending and slow level flight in mallards (Anas platyrhynchos). These measurements provide a description of the force/length properties of the pectoralis under dynamic conditions during two discrete flight behaviors and allow an examination of the effects of differences in body size and morphology on pectoralis performance by comparing the results with those of a recent similar study of slow level flight in pigeons (Columbia livia). In the present study, the mallard pectoralis showed a distinct pattern of active lengthening during the upstroke. This probably enhances the rate of force generation and the magnitude of the force generated and, thus, the amount of work and power produced during the downstroke. The power output of the pectoralis averaged 17.0 W kg(−)(1)body mass (131 W kg(−)(1)muscle mass) during slow level flight (3 m s(−)(1)) and 23.3 W kg(−)(1)body mass (174 W kg(−)(1)muscle mass) during ascending flight. This increase in power was achieved principally via an increase in muscle strain (29 % versus 36 %), rather than an increase in peak force (107 N versus 113 N) or cycle frequency (8.4 Hz versus 8.9 Hz). Body-mass-specific power output of mallards during slow level flight (17.0 W kg(−)(1)), measured in terms of pectoralis mechanical power, was similar to that measured recently in pigeons (16.1 W kg(−)(1)). Mallards compensate for their greater body mass and proportionately smaller wing area and pectoralis muscle volume by operating with a high myofibrillar stress to elevate mechanical power output.
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3

Biewener, A. A., and W. R. Corning. "Dynamics of mallard (Anas platyrynchos) gastrocnemius function during swimming versus terrestrial locomotion." Journal of Experimental Biology 204, no. 10 (May 15, 2001): 1745–56. http://dx.doi.org/10.1242/jeb.204.10.1745.

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This study investigates how the contractile function of a muscle may be modulated to accommodate changes in locomotor mode and differences in the physical environment. In vivo recordings of lateral gastrocnemius (LG) activation, force development (measured using tendon buckle transducers) and length change (measured using sonomicrometry) were obtained from mallard ducks (Anas platyrhynchos) as they swam at steady speeds in a water tank and walked or ran on land. LG force recordings were compared with combined lateral and medial gastrocnemius (MG) muscle-tendon force recordings obtained from the contralateral limb, allowing force development by the MG to be estimated relative to that of the LG. Although similar stresses were calculated to act in the LG and MG muscles during terrestrial locomotion (126 and 115 kPa, respectively), stresses were considerably greater in the LG compared with the MG during swimming (62 versus 34 kPa, respectively). During both steady swimming and terrestrial locomotion, the LG developed force while shortening over a considerable range of its length (swimming 23.6 % versus terrestrial 37.4 %). Activation of the muscle occurred near the end of passive lengthening during the recovery stroke, just prior to muscle shortening. As a result, the muscle generated broad positive work loops during both locomotor modes. LG work during swimming (4.8 J kg(−)(1)) averaged 37 % of the work performed during terrestrial locomotion (13.1 J kg(−)(1)), consistent with the twofold greater force and 58 % greater strain of the muscle during walking and running. Because limb cycle frequency was similar for the two locomotor modes (swimming 2.65 versus terrestrial 2.61 Hz), differences in power output (swimming 12.6 W kg(−)(1)versus terrestrial 32.4 W kg(−)(1)) largely reflected difference in work per cycle. Tendon elastic energy savings was a small fraction (<5 %) of the work performed by the muscle, consistent with a fiber-tendon design of these two muscles that favors muscle work to produce limb movement with little tendon strain. These results are consistent with a higher cost of terrestrial locomotion in ducks compared with other, more cursorial birds that may operate their muscles more economically and achieve greater tendon elastic savings.
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4

Leffin, Monique, and J. L. Riviere. "Effects of some inducers on hepatic and extrahepatic drug metabolism in the mallard duck (Anas platyrhynchos)." Comparative Biochemistry and Physiology Part C: Comparative Pharmacology 102, no. 3 (July 1992): 471–76. http://dx.doi.org/10.1016/0742-8413(92)90145-w.

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5

Adigbo, Sunday Ojo, Thomas Oladeji Fabunmi, Anthony Isadeha, Veronica Bola Adigbo, Joy Nwakaego Odedina, and K. Babatunde Korede. "Effects of Preceding Cowpea on the Performance of Maize in Cowpea-Maize Sequential Cropping." Agricultura tropica et subtropica 46, no. 3 (September 1, 2013): 91–96. http://dx.doi.org/10.2478/ats-2013-0016.

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Abstract Field experiment was conducted at the Federal University of Agriculture in 2004/2005, 2005/2006 and 2006/2007 cropping seasons to investigate the effects of cowpea varieties on succeeding of maize crop. The experiment was laid out in split-plot design and the treatment replicated three times. The main plot treatment was sprayed and unsprayed cowpea (Vigna unguculata L.) while variety constituted the subplot treatment (IT90K-76, IT90K-277-2, Drum, Olo, Oloyin, Mallam and Sokoto varieties). Maize variety cv TZESR-W was planted as the test crop in the early cropping season of 2005, 2006 and 2007 on each subplot of the preceding cowpea. The biomass of cowpea in the spray plots were higher than those of unsprayed at 8, 10 WAP in 2004. Olo variety had significantly lower biomass compared to others in 2004. The grain yield of cowpea from the sprayed plots was significantly higher than the unsprayed plots in all the years. IT90K-76 variety had the highest grain yield whereas Mallam and Drum had the lowest in all the years. Maize grain yields from the preceding cowpea plots were significantly higher than that of 0 N kg/ha. The fertilizer equivalent of the preceding varieties of cowpea ranges between 24 and 38 N kg/ha. Thus, preceding cowpea enhances the performance of succeeding maize.
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6

Marks, Larry. "Hardening Network Security, by Mallery, J., Zahn, J., Kelly, P., Noonan, W., Seagren, E., Love, P., Kraft, R., and O'Neill, M." Information Security Journal: A Global Perspective 20, no. 4-5 (January 2011): 261. http://dx.doi.org/10.1080/19393555.2011.607224.

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7

Stech, J., X. Xiong, C. Scholtissek, and R. G. Webster. "Independence of Evolutionary and Mutational Rates after Transmission of Avian Influenza Viruses to Swine." Journal of Virology 73, no. 3 (March 1, 1999): 1878–84. http://dx.doi.org/10.1128/jvi.73.3.1878-1884.1999.

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ABSTRACT In 1979, an H1N1 avian influenza virus crossed the species barrier, establishing a new lineage in European swine. Because there is no direct or serologic evidence of previous H1N1 strains in these pigs, these isolates provide a model for studying early evolution of influenza viruses. The evolutionary rates of both the coding and noncoding changes of the H1N1 swine strains are higher than those of human and classic swine influenza A viruses. In addition, early H1N1 swine isolates show a marked plaque heterogeneity that consistently appears after a few passages. The presence of a mutator mutation was postulated (C. Scholtissek, S. Ludwig, and W. M. Fitch, Arch. Virol. 131:237–250, 1993) to account for these observations and the successful establishment of an avian H1N1 strain in swine. To address this question, we calculated the mutation rates of A/Mallard/New York/6750/78 (H2N2) and A/Swine/Germany/2/81 (H1N1) by using the frequency of amantadine-resistant mutants. To account for the inherent variability of estimated mutation rates, we used a probabilistic model for the statistical analysis. The resulting estimated mutation rates of the two strains were not significantly different. Therefore, an increased mutation rate due to the presence of a mutator mutation is unlikely to have led to the successful introduction of avian H1N1 viruses in European swine.
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8

Park, Kee Woong, Judith M. Kolkman, and Carol A. Mallory-Smith. "Point mutation in acetolactate synthase confers sulfonylurea and imidazolinone herbicide resistance in spiny annual sow-thistle [Sonchus asper (L.) Hill]." Canadian Journal of Plant Science 92, no. 2 (March 2012): 303–9. http://dx.doi.org/10.4141/cjps2011-159.

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Park, K. W., Kolkman, J. M. and Mallory-Smith, C. A. 2012. Point mutation in acetolactate synthase confers sulfonylurea and imidazolinone herbicide resistance in spiny annual sow-thistle [Sonchus asper (L.) Hill]. Can. J. Plant Sci. 92: 303–309. Suspected thifensulfuron resistant spiny annual sow-thistle was identified near Colfax, Washington, in two fields with a winter wheat and lentil rotation. Therefore, studies were conducted to examine resistance of spiny annual sow-thistle to thifensulfuron and cross-resistance to other acetolactate synthase inhibitors and to determine the physiological and molecular basis for herbicide resistance. Whole-plant bioassay confirmed that the biotype was highly resistant to the sulfonylurea (SU) herbicides, thifensulfuron, metsulfuron, and prosulfuron. The resistant (R) biotype was also highly resistant to the imidazolinone (IMI) herbicides, imazamox and imazethapyr. An in vivo acetolactate synthase (ALS) assay indicated that the concentrations of SU and IMI herbicides required for 50% inhibition (I50) were more than 10 times greater for R biotype compared with susceptible (S) biotype. Analysis of the nucleotide and predicted amino acid sequences for ALS genes demonstrated a single-point mutation from C to T at the als1 gene, conferring the substitution of the amino acid leucine for proline in the R biotype at position197. The results of this research indicate that the resistance of spiny annual sow-thistle to SU and IMI herbicides is due to on altered target site and caused by a point mutation in the als1 gene.
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9

Mikhailova, Tatyana. "Daughter ~ Maiden ~ Maidservant: Dynamics of Semantic Shift from Continental Celtic to Insular Celtic Vocabulary." Studia Celto-Slavica 6 (2012): 39–49. http://dx.doi.org/10.54586/ceea7268.

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The old Indo-European word for ‘daughter’ (*dhugH [Szemerenyi 1977: 21] or *dhuĝ(h₂)-tḗr [Mallory, Adams 2006: 472]) survives in all major branches of daughter-languages except Albanian, Italian (but cf. Osc. futír?) and Insular Celtic. OI der ‘daughter, girl’ and der- in compound names represents a reduced form of old I.-E. word [O’Brien 1956: 178], “an allegro-form” [Matasović 2009: 110]. Continental Celtic has a well-known Gaulish duxtir (Larzac tablet) and Celtiberian TuaTe[r]es/TuaTeros (Bottorita inscription II) supposed to have the same old I.-E. meaning ‘daughter’ (?, cf. ‘jeune fille initiée’ [Lejeune 1985: 133], cf. also [Sims-Williams 2007: 3]). At the same time, another I.-E. term for ‘girl, woman’ is also attested and even widely used in Gaulish: *ġenh₁ ‘bear, generate’ [IEW: 373 ff.] > Gaul. geneta, genata, gneta, nata [Delamarre 2003: 177, 181] with supposed meaning ‘young girl, young woman, servant (?)’. Cf. also Osc. genetaí ‘daughter’. Insular Celtic conserved this I.-E. root in W. geneth ‘girl’ (with merch ‘daughter’), OI gen ‘woman, girl’ (a rare word of glossaries, see DIL: gen-2) and OI ingen ‘1.girl; 2.daughter’ (ousted in MI by cailín in this first meaning). The loss of I.-E. word of ‘daughter’ both in British and Goidelic could be explained by the special institute of fosterage existing in Early Ireland and Wales (cf. OI aite and muimme ‘foster-father’ and ‘foster-mother’, “intimate forms have been transferred to the fosterparents” [Kelly 1988: 86] and the use of dalta ‘foster-child’ with the meaning ‘daughter’ in Modern Irish dialects). But we suppose, this loss of I.-E. kinship term represents a part of so called “linguistic revolution” of Insular Celtic languages in early centuries AD, a “revolution” provoked by some social changes. The semantic shift ‘girl’ — ‘daughter’ — ‘servant’ (as well as ‘boy’ — ‘son’ — ‘servant’) represents a universalia (or frequentalia), attested in many languages (cf. [Zalizniak 2008]). Cf. Czech dĕvice, Paul. dziewa ‘girl’, but Luj. dźowka ‘daughter’ and Czech naše holka ‘our girl = daughter’; Russ. devochka ‘girl’ used in the meaning ‘daughter’ and, at the same time, dochka ‘daughter’ used in the meaning ‘girl’ in popular speech. The semantic development in this case is not ‘evolutional’ but of two-way one, or bilateral, that is: ‘girl’ ↔ ‘daughter’ (and ↔ ‘servant’). Cf. the etymology of I.-E. *dhuĝ(h₂)-tḗr proposed (with some doubt) by J.Mallory: from *dhug- ‘meal’, ‘the person who prepares the meals’ [Mallory and Adams 1997: 148]. Servant again! Cf. also Russ. rab ‘slave’ and rebenok ‘child’.
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10

Buchan, Kenneth L., Anthony N. LeCheminant, and Otto van Breemen. "Paleomagnetism and U–Pb geochronology of the Lac de Gras diabase dyke swarm, Slave Province, Canada: implications for relative drift of Slave and Superior provinces in the PaleoproterozoicGeological Survey of Canada Contribution 20080350." Canadian Journal of Earth Sciences 46, no. 5 (May 2009): 361–79. http://dx.doi.org/10.1139/e09-026.

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Lac de Gras diabase dykes trend north to NNE across the central Slave Province of the Canadian Shield. U–Pb baddeleyite ages of 2023 ± 2 and 2027 ± 4 Ma are interpreted as dyke emplacement ages. These ages are similar to that of the Booth River igneous complex, exposed along the margins of Kilohigok Basin near the northern end of the dyke swarm. Ten paleomagnetic sites (from four to six dykes) yield a mean paleopole at 11.8°N, 92.1°W (dm = 8.4°, dp = 6.0°). A positive baked contact test where a Lac de Gras dyke crosscuts a NE-trending Malley dyke demonstrates that this pole is primary. It represents the first key Paleoproterozoic pole from the Slave Province and, hence, the first Paleoproterozoic Slave pole suitable for reconstructing paleocontinents. Although a direct comparison is not available with precisely dated paleopoles of identical age from other Archean cratons, a comparison is made with a sequence of precisely dated poles from Superior Province dyke swarms, including those 40–50 million years older and 25 million years younger. It yields two options depending on the relative magnetic polarity assumed for data from the two cratons. The two cratons were either at similar latitudes, but not in their present relative orientations, when the swarms were emplaced, or separated in latitude by ∼40°–60°. In either case, they may have drifted separately or formed part of a single (super)continent that subsequently broke up with the two cratons drifting separately to attain their present configuration. Additional key paleopoles are required to distinguish between these interpretations.
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Books on the topic "Mallaby, A W"

1

Mallory and the Trouble W - 21. Scholastic, 1996.

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Book chapters on the topic "Mallaby, A W"

1

Bosse, Anke. "Denise Blondeau/Gilles Buscot/Christine Mallard (Hrsg.): Jeux et fetes dans l’œuvre de J. W. Goethe — Fest und Spiel im Werk Goethes. Strasbourg 2000, 312 S." In Goethe-Jahrbuch, 261–64. Stuttgart: J.B. Metzler, 2003. http://dx.doi.org/10.1007/978-3-476-02862-4_27.

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"Petition from Robert Q. Mallard to Confederate General Hugh W. Mercer (1862)." In African American Studies Center. Oxford University Press, 2012. http://dx.doi.org/10.1093/acref/9780195301731.013.34014.

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