8,614 research outputs found
Three-stage turbo MBER Multiuser beamforming receiver using irregular convolutional codes
No full textBased on extrinsic information transfer (EXIT) charts, the convergence behavior of a three-stage serially concatenated multiuser beamforming receiver is presented. This system uses a linear minimum bit error rate (BER) multiuser detector as the inner module. Due to the nonrecursive nature of this inner module, a unity-rate memory-1 recursive precoder is placed in front of the channel to provide the required recursive structure. Irregular convolutional codes (IRCCs) are constructed to be used as the outer code to achieve near-capacity performance. Our simulations show that this system outperforms the traditional two-component iterative structure and is capable of significantly educing the error floor
Yeast metabolism in fresh and frozen dough : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Food Technology at Massey University, Palmerston North, New Zealand
No full textAuthor also known as SM LovedayFresh bakery products have a very short shelf life, which limits the extent to which manufacturing can be centralised. Frozen doughs are relatively stable and can be manufactured in large volumes, distributed and baked on-demand at the point of sale or consumption. With appropriate formulation and processing a shelf life of several months can be achieved.Shelf life is limited by a decline in proofing rate after thawing, which is attributed to a) the dough losing its ability to retain gas and b) insufficient gas production, i.e. yeast activity. The loss of shelf life is accelerated by delays between mixing and freezing, which allow yeast cells the chance to ferment carbohydrates.This work examined the reasons for insufficient gas production after thawing frozen dough and the effect of pre-freezing fermentation on shelf life. Literature data on yeast metabolite dynamics in fermenting dough were incomplete. In particular there were few data on the accumulation of ethanol, a major fermentation end product which can be injurious to yeast.Doughs were prepared in a domestic breadmaker using compressed yeast from a local manufacturer and analysed for glucose, fructose, sucrose, maltose and ethanol. Gas production after thawing declined within 48 hours of frozen storage. This was accelerated by 30 or 90 minutes of fermentation at 30;C prior to freezing.Sucrose was rapidly hydrolysed and yeast consumed glucose in preference to fructose. Maltose was not consumed while other sugars remained. Ethanol, accumulated from consumption of glucose and fructose, was produced in approximately equal amounts to CO2, indicating that yeast cells metabolised reductively.Glucose uptake in fermenting dough followed simple hyperbolic kinetics and fructose uptake was competitively inhibited by glucose. Mathematical modelling indicated that diffusion of sugars and ethanol in dough occurred quickly enough to eliminate solute gradients brought about by yeast metabolism
Converting SrI <sub>2</sub> :Eu <sup>2+</sup> into a near infrared scintillator by Sm <sup>2+</sup> co-doping
No full text The luminescence and scintillation properties of SrI 2 single crystals doped with 5% Eu 2+ and 0.05%, 0.2% and 0.5% Sm 2+ are evaluated. X-ray excited and photoluminescence measurements show energy transfer from excited Eu 2+ ions to Sm 2+ ions. At a concentration of 0.5% Sm 2+ , the luminescence consists almost entirely of 740 nm emission from Sm 2+ 5d-4f transitions. Co-doping SrI 2 :5% Eu 2+ with Sm 2+ provides a novel method to bypass the self-absorption problem encountered in large SrI 2 :Eu 2+ crystals and, at the same time, provides a unique near-infrared emitting scintillator with a light yield of approximately 40,000 photons/MeV. Accepted Author ManuscriptRST/Fundamental Aspects of Materials and EnergyRST/Luminescence Material
'Laws 'Needefull in Later to be Abrogated': Intersex and the Sources of Christian Theology
No full textThis is the author accepted manuscript. The final version is available from Palgrave Macmillan via the DOI in this record
Introduction: Troubling Bodies?
No full textThis is the author accepted manuscript. The final version is available from Palgrave Macmillan via the DOI in this record
SM and MSSM Higgs Boson Production Cross Sections at the Tevatron and the LHC
No full textWe present results for the SM and MSSM Higgs-boson production cross sections at the Tevatron and the LHC. The SM cross sections are a compilation of the state-of-the-art theoretical predictions. The MSSM cross sections are obtained from the SM ones by means of an effective coupling approximation, as implemented in FeynHiggs. Numerical results have been obtained in four benchmark scenarios for two values of tan beta, tan beta = 5, 40
Gastromyzon crenastus Tan & Leh, 2006, new species
No full textGastromyzon crenastus, new species Figs. 3-4 Material examined: BORNEO: SARAWAK (Sadong River basin): HOLOTYPE: SM uncatalogued, 28.1 mm SL; Serian, Sungai Kuhas, 6.9 km from Tebelu Tebakang turnoff, 5.8 km inside right side road (01º09’10.0”N110º29’22.7”E); H. H. Tan et al., 5 Sept. 1995. PARATYPES: SM uncatalogued, 9 ex., 16.9-24.7 mm SL; ZRC 39416, 10 ex., 16.7-28.4 mm SL; CMK 11958, 4 ex., 25.1-28.0 mm SL; preceding lots collected with holotype. The following paratype lots are also from the type locality, but with different collectors and dates of collection, as indicated. ZRC 39831, 7 ex., 20.3-29.7 mm SL; H. H Tan et al., 14 Jan. 1996. ZRC 47075, 6 ex., 18.9-22.4 mm SL; H. H. Tan et al., 19 Feb. 1997. ZRC 47076, 24 ex., 18.2-26.8 mm SL; Honours 98/99 Fish Group, 23 June 1998. NON-TYPE MATERIAL: ZRC 47084, 1 ex., 29.0 mm SL; Sarawak: Tebedu, Sungai Ahi, on road towards Mongkos (00°55.44'N110°32.34'E); H. H. Tan et al., 12 June 1999. The following non-type lots are all from the type locality, but with different collectors and dates of collection, as indicated. ZRC 41213, 16 ex., 18.0-22.2 mm SL; H. H Tan et al., 19 Feb. 1997. ZRC 47077, 2 ex., 19.8-27.8 mm SL; H. H. Tan et al, 29 Oct. 1997. ZRC 47078, 5 ex., 21.5-24.3 mm SL (site 1, sample 2); ZRC 47079, 6 ex., 18.1-26.1 mm SL (site 1, sample 3); Honours 98/99 Fish Group, 24 June 1998. ZRC 47080, 2 ex., 22.7-25.4 mm SL (site 2, sample 2); ZRC 47081, 2 ex., 17.3-23.4 mm SL (site 2, sample 3); Honours 98/99 Fish Group, 25 June 1998. ZRC 47082, 2 ex., 16.6-16.9 mm SL (site 3, sample 2); Honours 98/99 Fish Group, 26 June 1998. ZRC 47083, 14 ex., 14.5-24.0 mm SL; H. H. Tan et al., 10 June 1999. ZRC 47188, 9 ex., 21.4-25.3 mm SL; native collectors, 22 June 2002. Diagnosis.- Gastromyzon crenastus differs from its congeners in having the following unique combination of characters: a black body; dorsum with 6-8 thin cream bars or spots; head black, with cream spots and blotches; sublacrymal groove visible from side; absence of a secondary rostrum; absence of a postoral pouch; absence of a subopercular groove; gill slit vertical; snout truncate when viewed dorsally; abdomen without scales; 60-65 scales in lateral line; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not at level overlapping anal fin origin. Maximum size: 29.7 mm SL (ZRC 39831), the smallest known species of Gastromyzon. Description. General body shape and appearance as in Figs. 3-4. Meristic and morphometric data appear in Table 1. Head truncate in dorsal profile, relatively short (27.5-29.8 % SL) and relatively wide (21.3-24.2 % SL, 74.3-83.3 % HL); head relatively flattened (head depth 12.8-13.9 % SL, 44.3-47.6 % HL); tubercles concentrated at anterior part of snout; snout relatively long (snout length 54.1-58.2 % HL); sublacrymal groove present, distinct when viewed from side; gill slit straight and vertical; length of gill slit about same as eye diameter; subopercular groove absent; postoral pouch absent; belly scales absent; pectoral fin overlapping anterior part of pelvic fin; pelvic fin not overlapping anal fin origin; anteriormost pectoral and pelvic-fin rays with dorsal serrae; dorsal fin situated at about mid body (predorsal length 55.2-59.2 % SL), adpressed dorsal fin not extending past level of anal-fin origin; deepest part of body at dorsal-fin origin (body depth at dorsal-fin origin 16.2-18.5 % SL); anus situated just beyond posterior base of fused pelvic fins; caudal peduncle relatively deep (9.5-10.7 % SL) and relatively short (8.5-10.8 % SL). Pigmentation and life coloration.-See Fig. 3. Body black on dorsum and sides; dorsum with 6-8 thin cream bars or spots; side with bars interrupted to form spots and blotches; ventrum cream. Head dorsum black, with cream spots and blotches. Eye with golden iris. Dorsal fin light brown, with 1 thick black bar, hyaline interradial membrane and margin; antero-basal black spot present on dorsal fin. Caudal fin base black, fin rays light brown with subdistal part a large black blotch, area just before blotch with iridescent blue, upper border with red, hyaline interradial membrane and thick margin. Anal-fin rays brown, hyaline edge. Pectoral and pelvic fins brown with 1 black bar. Pelvic axillary flap black with distal cream margin. Color in alcohol.-See Fig. 4. Body black on dorsum and sides, dorsum with 6-8 thin cream bars or spots, side with bars interrupted to form spots and blotches, ventrum cream. Head dorsum black with cream spots and blotches. Dorsal fin rays light brown with 1 thick black bar, fin with hyaline interradial membrane and margin, antero-basal black spot present. Caudal fin base black, anterior part with thin crescentic black band, centre of fin with large black blotch and with thin hyaline margin, hyaline interradial membrane and margin. Anal fin black, with hyaline margin. Pectoral and pelvic fins grey with 1 black bar. Pelvic axillary flap black, with distal cream margin. Juveniles with 5-6 cream spots and blotches on black body, head plain, caudal fin base black, with faint central black bar. Remarks.- Gastromyzon crenastus can be further differentiated from other congeners of the G. ridens group by the following characters: snout truncate in dorsal profile vs. rounded in G. ridens; adpressed dorsal fin not overlapping level of anal-fin origin vs. overlapping in G. ridens; pelvic fin not overlapping anal fin origin vs. overlapping in G. ridens. Distribution.-This species is known only from the hill streams feeding the Sadong River basin in southern Sarawak (Fig. 7). Etymology.-The species name is from the Latin crena, meaning notch. This is in reference to the white blotches and bars on the dark coloured body. Used as an adjective.Published as part of H. H. Tan & C. U. M. Leh, 2006, Three new species of Gastromyzon (Teleostei: Balitoridae) from southern Sarawak., pp. 1-19 in Zootaxa 1126 on pages 9-1
SM and MSSM Higgs boson production cross-sections at the Tevatron and the LHC
No full textWe present results for the SM and MSSM Higgs-boson production cross sections
at the Tevatron and the LHC. The SM cross sections are a compilation of the
state-of-the-art theoretical predictions. The MSSM cross sections are obtained
from the SM ones by means of an effective coupling approximation, as
implemented in FeynHiggs. Numerical results have been obtained in four
benchmark scenarios for two values of tan beta, tan beta = 5, 40.
Comment: 15 pages, 6 figures, contribution to the Tev4LHC workshop. Minor
modifications, references adde
Gastromyzon farragus Tan & Leh, 2006, new species
No full textGastromyzon farragus, new species Figs. 5-6 Material examined: BORNEO: SARAWAK (Sadong River basin): HOLOTYPE: SM uncatalogued, 30.9 mm SL; Serian, Sungai Kuhas, 6.9 km after Tebelu Tebakang turnoff, 5.8 km inside right side road (01º0910.0”N110º2922.7”E); H. H Tan et al., 5 Sept. 1995. PARATYPES: SM uncatalogued, 6 ex., 17.3-22.8 mm SL; ZRC 47108, 7 ex., paratypes, 15.4-35.9 mm SL; collected with holotype. The following paratypic lots are also from the type locality, but with different collectors and dates of collection, as indicated. ZRC 47109, 6 ex., 15.3-36.1 mm SL; H. H Tan et al., 14 Jan. 1996. ZRC 47110, 6 ex., 24.0-37.1 mm SL; H. H. Tan et al., 19 Feb. 1997. ZRC 47111, 36 ex., 18.7-38.5 mm SL; Honours 98/99 Fish Group, 23 June 1998. NON-TYPE MATERIAL: ZRC 47120, 4 ex., 18.4-28.9 mm SL; Sarawak: Tebedu, Sungai Ahi, on road towards Mongkos (00º55.44'N110º32.34'E); H. H. Tan et al., 12 June 1999. The following non-type lots are all from the type locality, but with different collectors and dates of collection, as indicated. ZRC 47123, 5 ex., 24.9-32.0 mm SL; H. H Tan et al., 14 Jan. 1996. ZRC 41212, 9 ex., 19.9-37.9 mm SL; H. H Tan et al.,19 Feb. 1997. ZRC 47112, 12 ex., 13.6-37.0 mm SL; H. H. Tan et al., 29 Oct. 1997. ZRC 47113, 9 ex., 28.8-38.8 mm SL (site 1, sample 1); ZRC 47114, 16 ex., 14.5-35.0 mm SL (site 1, sample 2); ZRC 47115, 64 ex., 13.3-37.1 mm SL (site 1, sample 3); Honours 98/99 Fish Group, 24 June 1998. ZRC 47116, 31 ex., 11.0-37.6 mm SL (site 2, sample2); ZRC 47117, 30 ex., 20.8-37.8 mm SL (site 2, sample 3); Honours 98/99 Fish Group, 25 June 1998. ZRC 47118, 10 ex., 14.7-33.2 mm SL (site 3, sample 2); Honours 98/99 Fish Group, 26 June 1998. ZRC 43621, 20 ex., 10.3-38.2 mm SL; H. H Tan & W. K. Goh, 6 Feb. 1999. ZRC 47119, 76 ex., 16.1-40.2 mm SL; H. H. Tan et al., 10 June 1999. ZRC 47189, 10 ex., 24.4-39.5 mm SL; native collectors, 22 June 2002. Diagnosis.- Gastromyzon farragus differs from its congeners in having the following unique combination of characters: body dark brown, dorsum with 9-10 thin cream bars, side with spots and blotches, head dorsum dark brown with fine cream spots; caudal fin red in life; sublacrymal groove just visible when viewed from side; absence of a secondary rostrum; absence of a postoral pouch; gill slit angular, subopercular groove present and continuous to pectoral fin origin; a rounded snout when viewed dorsally; abdomen without scales; 52-55 scales in lateral line; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not overlapping anal fin origin. Maximum size: 40.2 mm SL (ZRC 47119). Description.-General body shape and appearance as in Figs. 5-6. Meristic and morphometric data appear in Table 1. Head rounded in dorsal profile, relatively short (26.7-28.3 % SL) and wide (20.1-21.8 % SL, 73.0-80.4 % HL), head relatively flattened (head depth 13.1-14.3 % SL, 49.0-51.1 % HL); snout elongated (snout length 57.5-61.8 % HL), tubercles present over entire head, concentrated on anterior part of snout; sublacrymal groove present, just visible from side of snout; gill slit strongly angular, subopercular groove pronounced and continuous to origin of pectoral fin base; postoral pouch absent; belly scales absent; posterior part of pectoral fin overlapping anterior part of pelvic fin; anteriormost pectoral and pelvic-fin rays with dorsal serrae; dorsal fin situated about mid body (predorsal length 56.0-58.6 % SL), adpressed dorsal fin not overlapping level of anal fin origin; deepest part of body at dorsal fin origin (body depth at dorsal fin origin 19.2-20.2 % SL); anus situated just beyond posterior base of fused pelvic fins; caudal peduncle relatively deep (10.3-11.5 % SL) and relatively long (9.3-11.1 % SL). Pigmentation and life coloration. See Fig. 5. Body dark brown; dorsum with 9-10 thin cream bars; side with fine cream spots; ventrum cream; a tiny gold spot on posterior edge of every body scale. Head dorsum dark brown, with fine cream spots. Eye with golden iris. Dorsal fin yellowish brown, with 2 black bars, subdistal bar most distinct, hyaline interradial membrane and margin, antero-basal black spot present. Caudal-fin base yellowish, fin light brown with 1 subdistal thick black bar suffused with red, hyaline interradial membrane and yellowish margin. Anal-fin base black, fin light brown with 2 thin black bars, and hyaline margin. Pectoral and pelvic fins dark brown, with 2-3 rows of cream spots, and hyaline margins. Pelvic axillary flap brown with 5-6 cream spots. Color in alcohol.-See Fig. 6. Body dark brown or black; dorsum with 9-10 faint thin cream bars; side with indistinct cream spots; ventrum cream. Head dorsum dark brown, with fine cream spots. Dorsal fin cream, with 2 black bars, subdistal bar most distinct, hyaline interradial membrane and margin, antero-basal black spot present. Caudal fin base cream, fin cream with 1 subdistal thick black bar, hyaline interradial membrane and margin. Anal-fin base black, fin cream with 2 thin black bars, hyaline margin. Pectoral fin dark brown with 2-3 broad rows of cream spots, hyaline margin. Suprapelvic posterior part over pelvic fin base flap light brown. Pelvic fin cream, with dark brown base, and thick hyaline margin. Juveniles with interrupted cream bars on posterior half of grey body; dorsum uniform; caudal fin base with 1 black bar. Remarks.- Gastromyzon farragus can be further differentiated from G. ocellatus by having the head dorsum with fine cream spots only (vs. cream spots and blotches); anterior half of body with spots (vs. bars); 4-5 cream bars anterior to dorsal fin origin (vs. 3 bars); sublacrymal groove just visible from side (vs. not visible); fewer lateral-line scales (52-55, vs. 56-61); narrower head width (20.1-21.8, vs. 23.3-27.2 % SL; 73.0-80.4, vs. 90.0-95.9 % HL). Distribution.- Gastromyzon farragus is currently only known from hill streams of the Sadong River basin in southern Sarawak (Fig. 7). Etymology.-The species name is from the Latin farrago, meaning mixture. This is in allusion to the presence of both bars (on the dorsum) and spots (on the lateral) on body. Used as an adjective.Published as part of H. H. Tan & C. U. M. Leh, 2006, Three new species of Gastromyzon (Teleostei: Balitoridae) from southern Sarawak., pp. 1-19 in Zootaxa 1126 on pages 15-1
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