6,726 research outputs found
A catalogue of the best books in every department of literature; with complete author, subject, and title index.
No full textAlso issued for distribution by other firms with corresponding substitution of imprint and copyright but with omission of plates, preface, and p. 337-341, " a partial list of books published by the Burrows brothers company."Mode of access: Internet
<i>Planolites</i> isp. burrows from Mud Buttes.
No full text<p>(A) Plan view showing undersides of closely packed horizontal burrows at coal/silty sandstone interface. Note coal still adherent to some burrows (specimen KT3/UCM 98212). (B) Discernible burrows colored and numbered to illustrate minimum burrow density within 8 cm<sup>2</sup> (specimen KT4/UCM 98213). Portions of at least 23 burrows comprise roughly 30% of area of white box. Burrows are colored different shades of green to illustrate overlapping relationships. The burrowing activity likely took place within a short period of time, but burrows colored darker green were lower in the soil profile and appear to have been crossed <i>in situ</i> by other burrows (lighter shades of green). Burrows colored lightest green were the topmost burrows. Note that this specimen is the same as that in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0070920#pone-0070920-g001" target="_blank">Figure 1D</a>. (C) Close-up of burrow 19 in B (specimen KT4/UCM 98213).</p
Let the Use of the Words Teach You Their Meaning:Sue MacLaine and Jonathan Burrows in dialogue
No full textA conversation between theatre maker Sue MacLaine and choreographer Jonathan Burrows on MacLaine's performance 'Can I Start Again Please' (2015), focussing on her use of Wittgenstein's ideas and her approaches to performance about trauma
Let the Use of the Words Teach You Their Meaning:Sue MacLaine and Jonathan Burrows in dialogue
No full textA conversation between theatre maker Sue MacLaine and choreographer Jonathan Burrows on MacLaine's performance 'Can I Start Again Please' (2015), focussing on her use of Wittgenstein's ideas and her approaches to performance about trauma
(L.) Burrows
No full textMacropore formation and litter incorporation are two results of earthworm [Lumbricus terrestris (L.)] activities that can influence trophic dynamics inside burrows. Thus, mesocosms were constructed to examine changes in microbial biomass and microfaunal communities inside artificial compared with earthworm burrows. Four treatments were established: (i) no worms (CTRL); (ii) unlined, artificial burrows (ARTF); (iii) corn (Zea mays L.) leaf litter-lined, artificial burrows (LEAF); and (iv) Lumbricus terrestris (L.) burrows (WORM). There were no consistent differences in community structures between unlined, artificial burrows and control soils during a 16-wk incubation. In contrast, protozoan numbers were elevated throughout the experiment in LEAF and WORM. A succession of nematode abundances occurred in LEAF, with plant parasitic and Tylenchid nematode numbers peaking at 5 wk, followed by high bacterivorous and fungivorous nematode numbers. In WORM, bacterivorous nematode numbers and active bacterial biomass were elevated for 1 and 3 wk, respectively, before declining. Active fungal biomass increased in WORM, whereas fungivorous nematodes were inhibited in earthworm burrows. While litter incorporation appeared to accelerate the rate of trophic interactions in artificial burrows, the effects of earthworms appeared to transcend that of litter translocation into soil, with earthworms differentially selecting for particular food web dynamics
Differential <i>Carcinus</i> survivorship with and without burrows access and predation exposure.
No full text<p>Tethered <i>Carcinus</i> with access to burrows to avoid desiccation and in cages to avoid predation experienced the highest survivorship, while those exposed to both stressors experienced significant mortality. These results underscore the role of <i>Sesarma</i> burrows as refuges from desiccation, which transform inhospitable die-off banks into benign intertidal habitats capable of sustaining large, burrow-dwelling <i>Carcinus</i> populations.</p
An experimental procedure to study the impact of animal burrows on existing levee structures
No full textAnimal burrows have been reported to cause extensive damage to existing levees and other earthen structures in different parts of the world. In this study a centrifuge model that has been designed to investigate the impact of animal burrows on the performance of an existing earthen structure is described. The proposed methodology simulates animal burrows in an earthen structure by introducing cylindricalshaped openings inside a pre-designed model. A homogenous levee with 1:1 side slopes and a horizontal toe drain was chosen for this preliminary investigation. The steps taken to construct the model and the effect of the adopted burrow simulation technique on the model performance are discussed. Crest settlement was measured before and after the burrow introduction and during the increase in water level to failure. Conclusions regarding the adequacy of the adopted technique are made
Burrows-Wheeler Transform on Purely Morphic Words
No full textThe study of the compressibility of repetitive sequences is an issue that is attracting great interest. We consider purely morphic words, which are highly repetitive sequences generated by iterating a morphism φ that admits a fixed point (denoted by φ^∞(a) ) starting from a given character a belonging to the finite alphabet A , i.e. φ^∞(a)=lim_{i→∞}φ^i(a) . Such morphisms are called prolongable on a . Here we focus on the compressibility via the Burrows-Wheeler Transform (BWT) of infinite families of finite sequences generated by morphisms. In particular, denoted by r(w) the number of equal-letter runs of a word w , we provide new upper bounds on r(bwt(φ^i(a))) , i.e. the number of equal-letter runs produced when BWT is applied on φ^i(a) . Such bounds depend on the factor complexity f_x(n) of the infinite word x=φ^∞(a) , that counts, for each n≥0 , the number of distinct factors of x having length n
Synapsid Burrows in the Lower Jurassic Navajo Sandstone, Utah
No full textEnigmatic structures below interdune deposits of the Lower Jurassic Navajo Sandstone near Moab, Utah are interpreted as synapsid burrows based on similar morphologies to fossil and extant synapsid burrows. Two types of burrows are distinguished by their size. Type I burrows are large diameter and comprise complex, high density sinuous tunnels, Y- and T- branched tunnels, sinuous ramps, and chambers. Type I burrows at one locality weather into mounds averaging 33 m x 22 m and extend ~ 1 m above the surface. Type I burrows are dorsoventrally flattened, in cross section averaging 9.3 cm wide and 4.2 cm high, and are sand filled and structureless. These burrows mostly have smooth walls, though some have scalloped walls. Type I burrows represent a new ichnogenera and ichnospecies Labyrinthopolis odieri. These burrows are best explained by multiple individuals living together in social groups similar to modern vole (social) and mole rats (eusocial), and likely represent permanent dwelling structures for foraging, nesting, hiding, and food storage. Type II burrows are mega diameter with simple, inclined tunnels ~ 35 cm wide and ~ 20 cm high, and exhibit well-preserved bilobate morphology along the underside of the tunnel. The walls preserve a series of 3 or 4 thin (~ 4-8 mm), inclined scratch marks from the upper part of the wall and along the floor. Type II burrows represents a new ichnogenera and ichnospecies Schemalitus psalihyponomes. Type II burrows were likely constructed by therapsids based on similarities to therapsid burrows found in South Africa and Antarctica, and likely represents a permanent shelter used for dwelling and brooding. Alternate excavators for Type I and II burrows are rejected by reviewing and comparing burrow morphologies of fossil and extant vertebrate groups because morphologies are consistent within the major groups in both fossil and extant vertebrates. Burrow morphologies reflect the tracemaker's anatomy, social structure, media consistency, and food availability
Many-electron theory of resonant charge transfer: Role of surface states in He and He+ scattering off Si(100)
No full textA many-electron theory of resonant charge transfer, originally formulated for the scattering of an atom with an empty valence orbital from a surface, is extended to treat the case where the valence orbital is initially occupied by one or two electrons. The scattering of He and He+ from the Si(001) surface is investigated. The interaction is assumed to be with the narrow band of surface states, and not the much wider bulk band. As a result, considerable oscillations are found in the ionization and/or neutralization probabilities as a function of the incident energy.PT: J; CR: AMOS AT, 1989, ADV CHEM PHYS, V76, P335 AMOS AT, 1989, SOLID STATE COMMUN, V71, P449 BLOSS W, 1978, SURF SCI, V72, P277 BRAKO R, 1981, SURF SCI, V108, P253 BURROWS BL, 1984, Q APPL MATH, V42, P73 BURROWS BL, 1990, J PHYS A-MATH GEN, V23, P1101 BURROWS BL, 1991, SURF SCI, V253, P365 CHADI DJ, 1975, PHYS STATUS SOLIDI B, V68, P405 HAGSTRUM HD, 1954, PHYS REV, V96, P336 HAGSTRUM HD, 1961, PHYS REV, V122, P83 HERMAN F, 1963, ATOMIC STRUCTURE CAL IHM J, 1980, PHYS REV B, V21, P4592 MUDA Y, 1980, SURF SCI, V97, P283 MUDA Y, 1988, NUCL INSTRUM METH B, V33, P388 MUDA Y, 1988, PHYS REV B, V37, P7048 PAULING L, 1935, INTRO QUANTUM MECHAN ROBERTS N, 1990, SURF SCI, V236, P112 SOUDA R, 1985, SURF SCI, V150, L59 SOUDA R, 1986, NUCL INSTRUM METH B, V15, P114 SOUDA R, 1986, NUCL INSTRUM METH B, V15, P138 SOUDA R, 1986, SURF SCI, V176, P657 SULSTON KW, 1988, PHYS REV B, V37, P9121 SULSTON KW, 1988, SURF SCI, V197, P555 SULSTON KW, 1989, SURF SCI, V244, P543 WEAKLIEM PC, 1990, SURF SCI, V232, L219 WEISENDANGER R, 1990, SURF SCI, V232, P1; NR: 26; TC: 4; J9: PHYS REV B; PG: 11; GA: HZ245Source type: Electronic(1
- …
