1,990 research outputs found
L-R: Katie Lee; Leo Walters; Bruce Berger sitting on a boat on the Colorado River.
No full textPhoto of Photo of Arizona folk singer and author Katie Lee (far left), Leo Walters (center), and writer Bruce Berger (far right), sitting on a raft on the Colorado River, Glen Canyon, Uta
Workshop processes, practices, and materials / Bruce J. Black.
No full textIncludes index.x, 341 pages. :Workshop Processes, Practices and Materials is an ideal introduction to the workshop environment for students ready to embark on a career in engineering, or anyone who will be making use of an engineering workshop.
Bruce Black distils workshop techniques and technology in a simple and straightforward style, with hundreds of useful illustrations included throughout the book. The third edition of this comprehensive and well-established text has been updated throughout, now featuring end of chapter review questions to aid student learning, and also includes new chapters on Moving Loads, as well as Drawing, Specifications and Data, with expanded material on Safety and Measuring Equipment.
The broad coverage of this text ensures it will meet the requirements of a wide range of engineering courses world-wide. The new edition has matching to Performing Engineering Operations (PEO Level 2), covering units 1, 3, 4, 5, 9, 11 and 12, and will continue to cater for other courses at this level such as Intermediate GNVQ, BTEC First, Vocational GCSE and a range of NVQ Level 2 engineering courses from City and Guilds in the UK.
* Practical workshop text, provides the essential information on workshop practice needed by all students new to the field of mechanical engineering
* Simple and straightforward writing style, highly illustrated throughout, to increase accessibility for the reader
* New feature - end of chapter Review Questions, to aid student learnin
Let the world slip
No full textFor the past twenty years, Paul and Barbara had devoted much of their energy to their roles as parents. However, when their son moves out to live with his new fiancée the two of them start to recognize that their marriage is ending. Paul and Barbara must each come to terms with the idea that they have become different people. Paul’s struggle becomes central as he dwells on his shortcomings as a husband. Meanwhile, Barbara desperately wants to keep the truth of the pending divorce from their son Dan; however, this is complicated by Paul’s erratic behavior and admission that he has slept with a coworker. While Paul and Barbara attempt to divide their lives from one another they are also left considering their roles as caregivers. They cannot agree how to handle the truth about the divorce because they have different ideas of their son’s independence and reliance on them. Likewise, their struggle with honesty and guilt also leaves them to reconsider their responsibility as the children of elderly parents. Toward the novel’s end Dan is shown addressing a similar struggle. He is forced to come to terms with a rewritten history of his parents and his childhood while trying to balance his commitment to his family and his faithfulness to his wife. Let the World Slip is the story of one family’s unraveling. It incorporates the struggles inherent in establishing relationships between spouses, family members, and acquaintances. The characters come to better understand themselves in the face of adversity and truth.M.F.A.A novel.by Bruce J. Wals
Amine Modulation of Glutamate Responses From Pyloric Motor Neurons in Lobster Stomatogastric Ganglion
No full textJohnson, Bruce R. and Ronald M. Harris-Warrick. Amine modulation of glutamate responses from pyloric motor neurons in lobster stomatogastric ganglion. J. Neurophysiol. 78: 3210–3221, 1997. The amines dopamine (DA), serotonin (5-HT), and octopamine (Oct) each elicit a distinctive motor pattern from a quiescent pyloric network in the lobster stomatogastric ganglion (STG). We previously have demonstrated that these amines alter the synaptic strength at multiple, distributed sites within the pyloric network that could contribute to the amine-induced motor patterns. Here, we examined the postsynaptic contribution to these changes in synaptic strength by determining how the amines modify responses of pyloric motor neurons to glutamate (Glu), one of the network transmitters, applied iontophoretically into the STG neuropil. Dopamine reduced the Glu responses of the pyloric dilator (PD), ventricular dilator (VD), and inferior cardiac (IC) neurons and enhanced the Glu responses of the lateral pyloric (LP) and pyloric constrictor (PY) neurons. The only effect of 5-HT was to reduce the Glu response of the VD neuron. Oct enhanced the Glu responses of the LP and PY neurons but did not affect the PD, VD, and IC responses. We also examined amine effects on the depolarizing responses to iontophoresed acetylcholine (ACh) in the PD and VD and found that they paralleled the amine effects on Glu responses in these neurons. This suggests that amine modulation of PD and VD responses to Glu and ACh may be explained by general changes in the ionic conductance of these neurons. We compare our results with our earlier work describing amine effects on synaptic strength and input resistance to show that amines act at both pre- and postsynaptic sites to modify graded synaptic transmission in the pyloric network.</jats:p
A preclinical study of stem subsidence and graft incorporation after femoral impaction grafting using porous hydroxyapatite as a bone graft extender
No full textThis preclinical in vivo screening study compared bone graft incorporation and stem subsidence in cemented hemiarthroplasty after femoral impaction bone grafting with either morselized allograft bone (n = 5, control group) or a 1:1 mix of allograft and porous hydroxyapatite ceramics (HA) granules (n = 5, HA group). At 14 weeks, there was excellent bone graft incorporation by bone, and the stems were well fixed in both groups. The median subsidence at the cement-bone interface, measured using radiostereometric analysis, was 0.14 and 0.93 mm in the control and HA groups, respectively. The comparable histologic results between groups and good stem fixation in this study support the conduct of a larger scale investigation of the use of porous HA in femoral impaction bone grafting at revision hip arthroplasty.Donald W. Howie, Margaret A. McGee, Stuart A. Callary, Angelo Carbone, Roumen B. Stamenkov, Warrick J. Bruce, and David M. Findla
Ground-water hydrology of the upper Klamath Basin, Oregon and California
No full textby Marshall W. Gannett, Kenneth E. Lite Jr., Jonathan L. La Marche, Bruce J. Fisher, and Danial J. Polette ; prepared in cooperation with the Oregon Water Resources Department.Title from PDF cover (viewed on April 22, 2020).Covers OCLC #1151627285 and OCLC #123900688.This archived document is maintained by the State Library of Oregon. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references.Mode of access: Internet from the State Library of Oregon U.S. Government Publications Collection.Text in English
Bruce Sterling
No full textThis chapter introduces US author, journalist, blogger, and futurist Bruce Sterling. Since his science fiction (sf) debut with the story “Man-Made Self” (1976), Bruce Sterling has so far published eleven novels (plus one in collaboration with William Gibson), over 70 pieces of short fiction (not including dozens of collaborations), and a handful of chapbooks in various media, accruing a number of awards and accolades in the process. He edited the influential Mirrorshades: The Cyberpunk Anthology (1986) and served for two years (2014-15) as editor of Twelve Tomorrows, MIT Technology Review’s Science Fiction Annual. Sterling’s career beyond sf is marked by a fascination with media and with design, which is perhaps not surprising; after all, the “cyber” in cyberpunk means control, and control necessitates technologies of communication. Sterling’s interest, however, is not (only) directed at the abstract or conceptual-he has consistently shown himself to be more interested in the actuality of the technoscientific frontier than the literary-metaphorical
Detailed summaries of peer-reviewed journal articles with Alison Snow Jones as primary author
No full textAnnotated guide to the scholarly work of Alison Snow Jones, created by Lauren J. Bruce for inclusion in "An Uncommon Woman: Alison Snow Jones Unleashed!
Mixed Bruce-Roberts numbers
No full text[EN] We extend the notions of mu*- sequences and Tjurina numbers of functions to the framework of Bruce-Roberts numbers, that is, to pairs formed by the germ at 0 of a complex analytic variety X. Cn and a finitely R( X)-determined analytic function germ f : (Cn, 0). (C, 0). We analyze some fundamental properties of these numbers.Part of this work was developed during the stay of the first author at the Departamento de Matematica of ICMC, Sao Carlos, Universidade de Sao Paulo (Brazil), in February and July 2018. The first author wishes to thank this institution for their hospitality and working conditions and to FAPESP for financial support. The first author was partially supported by MICINN Grant PGC2018-094889-B-I00 and FAPESP Grant 2014/00304-2. The second author was partially supported by CNPq Grant 306306/2015-8 and FAPESP Grant 2014/00304-2.Bivià-Ausina, C.; Ruas, M. (2020). Mixed Bruce-Roberts numbers. Proceedings of the Edinburgh Mathematical Society. 63(2):456-474. https://doi.org/10.1017/S0013091519000543S456474632Damon, J. (1996). Higher multiplicities and almost free divisors and complete intersections. Memoirs of the American Mathematical Society, 123(589), 0-0. doi:10.1090/memo/0589Wahl, J. M. (1983). Derivations, automorphisms and deformations of quasihomogeneous singularities. Proceedings of Symposia in Pure Mathematics, 613-624. doi:10.1090/pspum/040.2/713285De Goes Grulha, N. (2008). THE EULER OBSTRUCTION AND BRUCE-ROBERTS’ MILNOR NUMBER. The Quarterly Journal of Mathematics, 60(3), 291-302. doi:10.1093/qmath/han011Greuel, G.-M. (1975). Der Gau�-Manin-Zusammenhang isolierter Singularit�ten von vollst�ndigen Durchschnitten. Mathematische Annalen, 214(3), 235-266. doi:10.1007/bf01352108Gaffney, T. (1996). Multiplicities and equisingularity of ICIS germs. Inventiones Mathematicae, 123(1), 209-220. doi:10.1007/bf01232372Damon, J. (2002). On the freeness of equisingular deformations of plane curve singularities. Topology and its Applications, 118(1-2), 31-43. doi:10.1016/s0166-8641(01)00040-2Bruce, J. W., & Roberts, R. M. (1988). Critical points of functions on analytic varieties. Topology, 27(1), 57-90. doi:10.1016/0040-9383(88)90007-9Decker, W. , Greuel, G.-M. , Pfister, G. and Schönemann, H. , Singular 4-0-2. A computer algebra system for polynomial computations. Available at http://www.singular.uni-kl.de (2015).Looijenga, E. J. N. (1984). Isolated Singular Points on Complete Intersections. doi:10.1017/cbo9780511662720AHMED, I., RUAS, M. A. S., & TOMAZELLA, J. N. (2013). Invariants of topological relative right equivalences. Mathematical Proceedings of the Cambridge Philosophical Society, 155(2), 307-315. doi:10.1017/s0305004113000297Aleksandrov, A. G. (1986). COHOMOLOGY OF A QUASIHOMOGENEOUS COMPLETE INTERSECTION. Mathematics of the USSR-Izvestiya, 26(3), 437-477. doi:10.1070/im1986v026n03abeh001155Briançon, J., & Maynadier-Gervais, H. (2002). Sur le nombre de Milnor d’une singularité semi-quasi-homogène. Comptes Rendus Mathematique, 334(4), 317-320. doi:10.1016/s1631-073x(02)02256-2Giusti, M., & Henry, J.-P.-G. (1980). Minorations de nombres de Milnor. Bulletin de la Société mathématique de France, 79, 17-45. doi:10.24033/bsmf.1907Hauser, H., & Müller, G. (1993). Affine varieties and lie algebras of vector fields. Manuscripta Mathematica, 80(1), 309-337. doi:10.1007/bf03026556Liu, Y. (2018). Milnor and Tjurina numbers for a hypersurface germ with isolated singularity. Comptes Rendus Mathematique, 356(9), 963-966. doi:10.1016/j.crma.2018.07.004Nuno-Ballesteros, J. J., Orefice, B., & Tomazella, J. N. (2011). THE BRUCE-ROBERTS NUMBER OF A FUNCTION ON A WEIGHTED HOMOGENEOUS HYPERSURFACE. The Quarterly Journal of Mathematics, 64(1), 269-280. doi:10.1093/qmath/har032Ohmoto, T., Suwa, T., & Yokura, S. (1997). A remark on the Chern classes of local complete intersections. Proceedings of the Japan Academy, Series A, Mathematical Sciences, 73(5), 93-95. doi:10.3792/pjaa.73.93Lê Tráng, D. (1974). Calculation of Milnor number of isolated singularity of complete intersection. Functional Analysis and Its Applications, 8(2), 127-131. doi:10.1007/bf0107859
Ancylomenes lipkei Bruce 2011, sp. nov.
No full textAncylomenes lipkei sp. nov. (Fig. 1) Periclimenes (Periclimenes) aesopius — Holthuis, 1952, Siboga Exped. Mon, 39a10: 35-37 (partim), fig. 6d. Material examined.. 1 ov. ♀, holotype, Indonesia, Siboga stn. 33, Bay of Pidjot, Lombok, 22 m (or less), 24-26 March 1899, ZMA De. 206074. Diagnosis. Small sized slender shrimp of the genus Ancylomenes Okuno &Bruce. Rostrum (Fig. 1B) about 0.77 of CL, strongly arched, moderately elevated, ventrally concave, reaching to middle of intermediate segment of antennular peduncle, with 10 small acute teeth dorsally, first tooth situated on carapace, ventral margin concave, setose, with minute acute subterminal tooth; carapace (Fig. 1A) with inferior orbital angle strongly produced, acute, with reflected inner flange; antennal spine slender, marginal, well below inferior orbital angle, slightly above level of slender hepatic spine, slightly anterior to the level of first dorsal rostral; basicerite with acute dorsal protuberance proximally; third abdominal tergite (Fig. 1D) slightly posteriorly produced, not carinate; ophthalmic somite (Fig. 1B) with small rounded ophthalmic process; first pereiopod normal, second pereiopod (Fig. 1E) chela not bowed (Fig. 1F), 0.8 of CL, with fingers (Fig. 1G) about 0.65 of palm length, dactylus with 3 teeth mainly on proximal half, subacute, moderately recurved, tip of dactylus swollen, feebly notched, semi-dentate (Fig. 1H), fixed finger with 4 small blunt recurved teeth acute teeth proximally, on both fingers the distal tooth well separated from the proximal teeth by feeble diastema; carpus 0.8 of chela length, 0.9 of meral length: ischium subequal to merus length; third ambulatory pereiopod with dactyl biunguiculate, slender (Fig. 1J), 7.0 times longer than basal width, 0.3 of propod length, with small slender accessory tooth at 0.7 of length, not closely adpressed, unguis not clearly demarcated: propod (Fig. 1J) about 15.7 times longer than width, with single long distoventral spine, one long ventral spine at 0.75 of propod length, distoventral spine shorter than ventral spine. Systematic position. Closely resembling A adularans (Bruce, 2003). Differs from that species in the following features: Rostral dentition 10/1 (vs 11–13/1), dorsal carina less deep, dorsal margin less strongly convex, first rostral tooth only on carapace, ventral margin with minute distal tooth, inferior orbital angle less acute, without upturned tip, ventral flange feebly developed, antennal spine further removed below inferior orbital angle, almost on same level as hepatic spine (vs at much higher level), second pereiopod with fingers of chela greater than half palm length (vs shorter than palm), fingers with 3–4 small recurved teeth (vs dactyl unarmed, fixed finger with 2 small teeth), palm longer than merus (vs shorter), carpus shorter than palm (vs longer), subequal to merus and ischium, ambulatory pereiopod dactylus with accessory tooth less adpressed to unguis (vs strongly adpressed), propod with single long distoventral spine (vs paired distoventral teeth), single extra long ventral spine only (vs with short additional ventral spine). Measurements. CL 3.2 mm. Total length 25mm (Holthuis, 1952). Etymology. The species is named in honour of the late Dr Lipke B. Holthuis, in recognition of his outstanding contribution to the systematics of the Pontoniinae and with thanks for the seminal donation to the author of his last author’s copy of the pontoniine volume of the Siboga Expedition monographs many years ago. The present species is also closely related to Ancylomenes holthuisi (Bruce, 1969). Remarks. The single specimen of Ancylomenes lipke i is in a poor state with the thoracic region and abdomen almost completely separated, the abdomen is broken at segments 5/6. One first and second pereiopod is still attached, with one second pereiopod detached; the third ambulatory pereiopod now detached. Also, one loose mandible and two detached pleopods, and the left eye are present in the vial. Holthuis’s fig.6d shows a slender distal spine on the propod of the ambulatory pereiopod with a similar ventral spine close by. It is probable that this spine has been lost in Fig. 1J, unless other pereiopods were originally preserved. Of the other specimens, which are not readily identifiable with described species and may be the subject of a future report, the one from Banda, 9-36 m, 1899, ♀, CL 4.6mm, with a rostral dentition of 1+7/2, is highly macerated but may be A. speciosus (Okuno, 2004). This specimen is badly macerated with the third abdominal segment damaged, with both first pereiopods, the left second pereiopod only, still attached, three detached ambulatory propods with dactyls, right fifth still attached, others missing. The telson is damaged proximally, the small anterior and posterior dorsal spines and posterior marginal spines are separated by equal distances. The specimen from Siboga stn 164, 32m, ovig. ♀, CL 4.5mm, rostral dentition 1+7/1, is also rather macerated, complete, but with the abdomen broken at the third and fourth segments articulation. It probably represents a new species related to A. speciosus. Holthuis (1952) notes the specimen as an ovig. ♀ but few ova are preserved, none attached. The specimens from Siboga stn 240, 2 ovig. ♀, CLs ca 5.0mm, are not in good condition. One has the carapace completely destroyed, the remains lacking a rostrum. It is otherwise in a reasonable state with both first pereiopods attached, also the right second pereiopod, right fourth and fifth pereiopods and left third, fourth and fifth. The second specimen also has a damaged carapace, with the rostrum broken, the detached fragment preserved, the abdomen is severed at the junction of fifth and sixth segments: the distal part is preserved but the distal half of the telson is missing. One first pereiopod and three ambulatory pereiopods are still attached. One third maxilliped was also removed. One first pereiopod and one second pereiopod are detached and un-attributable. The specimens appear to resemble A. luteomaculatus Okuno and Bruce (2010).Published as part of Bruce, A. J., 2011, A note on an Ancylomenes (Crustacea: Decapoda: Pontoniinae) from the Siboga expedition, pp. 65-67 in Zootaxa 3001 (1) on pages 65-67, DOI: 10.11646/zootaxa.3001.1.5, http://zenodo.org/record/528086
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