162,612 research outputs found
Radical-Mediated C-H Bond Activation
No full textDr. Azman\u27s Contribution to Li, J. J. (2015). C-H bond activation in organic synthesis. Boca Raton, FL: CRC Press
FIGURE 7 in A new species of Cerapus (Amphipoda: Senticaudata: Ischyroceridae) from Pulau Bum Bum, Sabah, Malaysia, with an identification key to Cerapus species
No full textFIGURE 7. Cerapus bumbumiensis sp. nov., allotype, female lateral (UKMMZ-1607). All scales represent 0.1 mm.Published as part of Nurshazwan, J., Ahmad-Zaki, A.B. & Azman, B.A.R., 2020, A new species of Cerapus (Amphipoda: Senticaudata: Ischyroceridae) from Pulau Bum Bum, Sabah, Malaysia, with an identification key to Cerapus species, pp. 519-533 in Zootaxa 4802 (3) on page 527, DOI: 10.11646/zootaxa.4802.3.7, http://zenodo.org/record/390778
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
New Key Exchange Protocol Based on Mandelbrot and Julia Fractal Sets.
No full textIn this paper, we propose a new cryptographic key exchange
protocol based on Mandelbrot and Julia Fractal sets. The Fractal based key exchange protocol is possible because of the intrinsic connection between the Mandelbrot and Julia Fractal sets. In the proposed protocol, Mandelbrot Fractal function takes the chosen private key as the input parameter and generates the corresponding public key
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Dark retweets: investigating non-conventional retweeting patterns
No full textRetweets are an important mechanism for recognising propagation of information on the Twitter social media platform. However, many retweets do not use the official retweet mechanism, or even community established conventions, and these "dark retweets" are not accounted for in many existing analysis. In this paper, a comprehensive matrix of tweet propagation is presented to show the different nuances of retweeting, based on seven characteristics: whether it is proprietary, the mechanism used, whether it is directed to followers or non-followers, whether it mentions other users, if it is explicitly propagating another tweet, if it links to an original tweet, and what is the audience it is pushed to. Based on this matrix and two assumptions of retweetability, the degrees of a retweet's "darkness" can be determined. This matrix was evaluated over 2.3 million tweets and it was found that dark retweets amounted to 12.86% (for search results less than 1500 tweets per URL) and 24.7% (for search results including more than 1500 tweets per URL) respectively. By extrapolating these results with those found in existing studies, potentially thousands of retweets may be hidden from existing studies on retweets
Gbroidea dingaalana Lowry & Azman 2008, sp. nov.
No full text<i>Gbroidea dingaalana</i> sp. nov. <p>(Figs 2–4)</p> <p> <b>Type material.</b> Holotype female, 2.5 mm, AM P76155, off Watsons Beach, Lizard Island, Queensland, Australia (14º40’S 145º28’E), living in association with the zygometrid crinoid, <i>Zygometra microdiscus</i> (Bell, 1882), 21 m, stn QLD 2010, R. T. Springthorpe, 10 February 1987. Paratypes: 2 females, AM P38471, stn QLD 2011; 4 females, AM P38472, off Watsons Beach, Lizard Island, Queensland, Australia (14º40’S 145º28’E), living in association with <i>Comathus briareus</i> (Bell, 1882), <i>Comatula rotalaria</i> Lamarck, 1816 and <i>Zygometra microdiscus</i> (Bell, 1882), 21 m, stn QLD 2011, R. T. Springthorpe, 10 February 1987; 4 females, AM P38473, stn QLD 2010.</p> <p> <b>Type locality.</b> Off Watsons Beach, Lizard Island, Queensland, Australia (14º40’S 145º28’E), living in association with the unstalked zygometrid crinoid, <i>Zygometra microdiscus</i> (Bell, 1882), 21 m.</p> <p> <b>Etymology.</b> The species name, <i>dingaalana</i>, is based on the aboriginal tribe that visited Lizard Island before it was occupied by Europeans.</p> <p> <b>Description</b>. Based on holotype female, 2.5 mm, AM P76155.</p> <p> <b>Head</b>. Lateral cephalic lobes apically acute. <i>Eyes</i> large, irregularly round with deep brown core. <i>Antenna 1</i> flagellum with about 4 articles each with long aesthetascs distally; accessory flagellum 1 articulate. <i>Antenna 2</i> slightly shorter than antenna 1, slender; flagellum with 4 articles, apex of terminal segment with few long setae. <i>Mandible</i> molar absent. <i>Maxilla 2</i> reduced. <i>Lower lip</i> outer lobes apically produced with dense short apical setae. <i>Maxilliped</i> inner and outer plates reduced; inner plate not broad, apically truncate; outer plate extending beyond inner plate, apex with one small robust seta and several simple setae; palp 4-articulate, article 2 wider than long, dactylus apically falcate.</p> <p> <b>Pereon</b>. <i>Gnathopod 1</i> coxa vestigial; basis robust, anterior margin with 4 medium length setae, posterior margin with 1 seta posterodistally; merus not elongated, posterior margin with two setae; carpus distally expanded, anterodistally rounded with a pair of setae, posterior margin slightly produced with 3 posterodistal setae; propodus subrectangular, anterior margin with 3 setae, tooth-like process anterodistally, posterior margin straight; dactylus falcate. <i>Gnathopod 2</i> basis robust, anterior margin lined with medium length setae, posterior margin without setae; merus posterodistal margin with long setae; carpus subtriangular, subequal in length with propodus, anterior margin without setae, anterodistal margin with two setae. <i>Pereopod 3</i> coxa anterior margin expanded, rounded, posterior margin slightly concave; basis anterior margin densely setose; merus gradually expanding anterodistally. <i>Pereopod 4</i> coxa enlarged, shield-like, anterior margin almost straight, posterior margin with well developed rounded posterodistal margin; basis anterior margin straight, posterior margin slightly concave. <i>Pereopod 5</i> coxa anterior and posterior margin rounded; basis slender, rectolinear; merus posterodistal margin slightly produced. <i>Pereopod 7</i> shorter than pereopod 6; coxa anteroventral margin produced, expanded; basis anterior margin straight, with 2 setae along margin, posterior margin expanded, with distal lobe extending beyond ischium.</p> <p> <b>Pleon</b>. <i>Epimeron 3</i> posterodistal margin rounded. <i>Uropod 1</i> rami subequal, peduncle slightly shorter than rami, both margins of both rami pectinate. <i>Uropod 2</i> biramous, inner ramus shorter than outer ramus, both margins of both rami pectinate. <i>Uropod 3</i> biramous; peduncle subequal in length of inner ramus; inner ramus shorter than outer, outer margins pectinate. <i>Telson</i> entire.</p> <p> <b>Male</b>. Unknown.</p> <p> <b>Colour.</b> Antennae, head, eye, pereon and coxae deep brown with a diffused white stripe between pereon and coxae and between coxae 3–4; gnathopods, pereopods, pleopods, uropods and urosome translucent.</p> <p> <b>Habitat</b>. Living in association with the crinoids, <i>Comathus briareus</i> (Bell, 1882), <i>Comatula rotalaria</i> Lamarck, 1816 and <i>Zygometra microdiscus</i> (Bell, 1882).</p> <p> <b>Remarks</b>. <i>Gbroidea dingaalana</i> is the only cyproideid amphipod currently known from the Great Barrier Reef. During a 1987 expedition to Lizard Island, M. Grygier, J. Lowry and R. Springthorpe examined 10 specimens of three crinoids: <i>Comathus briareus</i>, <i>Comatula rotalaria</i> and <i>Zygometra microdiscus</i>. There were 11 specimens of <i>G. dingaalana</i> living on these crinoids or about 1 amphipod per host. We suspect that <i>G.dingaalana</i> has evolved an obligate commensal relationship with unstalked crinoids or is possibly an epiparasite. <i>Comathus briareus</i> and <i>Comatula rotalaria</i> are both deep brown in colour and <i>Zygometra microdiscus</i> is deep purple. The deep brown camouflage colouration of <i>G. dingaalana</i> makes it undetectable on the crinoid hosts and by inference, less susceptible to predators. The weakly developed mouthparts of <i>G. dingaalana</i> indicate that it is probably feeding on sloughed mucous or soft tissue, possibly epidermal tissue from the crinoid, similar to the uristid amphipod, <i>Euonyx chelatus</i>, which is an epiparasite of the regular sea urchin, <i>Echinus esculentus</i> (see Vader 1978; Comely & Ansell 1988). We only have information from three species of unstalked crinoids, but Messing <i>et al</i>. (2006) found 12 species of unstalked crinoids at Lizard Island.</p> <p> Interestingly Potts (1915) reported a purple amphilochid amphipod, <i>Cyclotelson purpureum</i>, associated with an unnamed crinoid, from Torres Strait. We did not find this species at Lizard Island.</p> <p> <b>Distribution</b>. <i>Australia</i>: Queensland: Lizard Island.</p>Published as part of <i>Lowry, J. K. & Azman, B. A. R., 2008, A new genus and species of cyproideid amphipod associated with unstalked crinoids on the Great Barrier Reef, Australia, pp. 59-68 in Zootaxa 1760 (1)</i> on pages 61-65, DOI: 10.11646/zootaxa.1760.1.5, <a href="http://zenodo.org/record/5123724">http://zenodo.org/record/5123724</a>
Mr. Melvin J. Collier, RWWL AUC, June 2011
No full textThis video is a conversation with Mr. Melvin J. Collier. Mr. Collier talks about his book, "From Mississippi to Africa: A Journey of Discovery". Daniel Le, AUC Woodruff Library, is the interviewer
Amphilochus lacertus Azman, 2009, sp. nov.
No full textAmphilochus lacertus sp. nov. (Figs 3, 4) Type material. Holotype, female, 2.7 mm, AM P76251 (in slides). Paratypes: 37 specimens, AM P 73185, 100 m off Freshwater Beach, Lizard Island (~ 14°41’S 145°27’E), sediment sample from sand bottom, 1.5 m, C. J. Short, 10 October 1978 (QLD 35). Type locality. Freshwater Beach, Lizard Island, Queensland, Australia (~ 14°41’S 145°27’E). Etymology. Named ‘lacertus’ in Latin for lizard, after the type locality, Lizard Island. Description. Based on holotype female, 2.7 mm, AM P76251. Head. Head lateral cephalic lobes apically round, rostrum decurved, slightly beyond peduncular article 1 of antenna 1; eyes large, irregularly round with black core. Antenna 1 slightly shorter than antenna 2, peduncular articles 1–3 with few short setae distally; flagellum with about 7 articles; accessory flagellum vestigial. Antenna 2 flagellum with 6 articles. Labium bilobed, densely pubescent apically. Lower lip shoulders densely, produced inward, with 2 small teeth on each lobe, mandibular process small. Maxilla 1 inner plate missing; outer plate with 7 large teeth; palp biarticulate, extending beyond outer plate, distal segment apical margin with several fine and robust setae. Maxilla 2 inner plate broader than outer plate with several stiff setae apically. Mandible, incisor serrate; palp 3-articulate, article 2 shorter than 1, article 3 attenuate. Maxilliped inner plate margin rounded apically, distally serrate with several fine setae; outer plate apical margin with fine and robust pectinate setae; palp stout, dactylus with unguis. Pereon. Gnathopod 1 coxa subquadrate; basis lined with several long setae along anterior margin, posterodistal margin with one seta; carpus subtriangular, slightly produced posterodistally with several pectinate setae; propodus distally expanded, anterior margin without setae; palm transverse, serrate, lined with slender setae, corner defined by 2 robust setae; dactylus inner margin serrate, distally attenuate. Gnathopod 2 coxa longer than wide; basis anterior margin without seta, anterodistal with flange, posterior margin expanded distally without setae along margin, posterodistal with one short robust seta; carpus with elongate posterior lobe extending beyond edge of palm, outer margin of lobe with 3 basal robust setae, distal part with 3 robust setae; propodus broad, gradually expanding, anterior margin without setae on medial margin, palm transverse with fine setae along margin and defined by 2 robust setae; dactylus inner margin serrate, distally attenuate. Pereopod 3 coxa subrectangular; basis elongate, anterior margin with 4 medium length setae along margin; dactylus falcate. Pereopod 4 coxa expanded medially; basis slender; carpus, propodus and dactylus lost. Pereopod 5 coxa bilobed; basis subquadrate, anterior margin with 4 robust setae, posterior with fine setae along margin; merus expanded posterodistally; dactylus falcate. Pereopod 6 basis anterior margin with 5 robust setae, posterior margin medially expanded with fine setae along margin; dactylus falcate. Pereopod 7 basis expanded, anterior margin with 4 short robust setae, posterior margin with fine setae; dactylus falcate. Pleon. Uropod 1 rami subequal in length, with short setae along margin; peduncle slightly shorter than rami with several short setae on inner margin. Uropod 2 inner ramus longer than outer ramus, lined with short setae along medial margin; peduncle shorter rami. Uropod 3 lost. Telson entire, longer than wide, apically acute. Male (sexually dimorphic characters). Unable to determine adult male among broken specimens. Habitat. Sandy bottom. Remarks. Amphilochus lacertus sp. nov. appears to be closely related to A. justi. They more or less agree in the structure of the pleonal epimera 1–3, antennae and uropods. The gnathopods are also nearly identical, except that basis of gnathopod 1 lined with medium length setae along its anterior margin. Further, the rostrum is extending beyond article 1 of antenna 1. Among the more important features characteristic of the present species is the overall structure of maxilliped. In A. lacertus the maxilliped is somewhat stouter especially in palp articles 1–3, the presence of the dactylar unguis also add to these differences. Distribution. Australia. Queensland: Lizard Island (current study).Published as part of Azman, B. A. R., 2009, Amphilochidae *, pp. 143-152 in Zootaxa 2260 (1) on pages 147-151, DOI: 10.11646/zootaxa.2260.1.7, http://zenodo.org/record/532339
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