196,981 research outputs found
Neotrombicula (Neotrombicula) tehranensis Stekolnikov and Shamsi 2020
No full textNeotrombicula (Neotrombicula) tehranensis Stekolnikov and Shamsi, 2020: PAL [In: Shamsi et al. 2020]Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 170, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Ectagela kermanensis Hosseini & Shamsi, 2014, sp. nov.
No full textEctagela kermanensis sp. nov. (Figs. 1–6) Type. Iran, Kerman province, Negar (29 ° 51 ' 37 " N, 56 ° 47 ' 59 " E, 2091 m), male holotype, 2 male, 2 female paratypes, 15.VI. 2013, collected by M. Shamsi. Description. Length 2.75 mm. Body elongate ovate. Pale yellowish green. Eye brownish red. Antenna yellow. Calli relatively large, weakly elevated. Pronotum with two yellowish orange marks. Scutellum with two yellowish orange marks posterolaterally. Each clavus with one yellowish orange mark medially. Corium with five scattered yellowish orange marks. Small cell of hemelytral membrane with a dark spot near inner margin of cuneus. Labium does not reach hind coxae. Head, upper surface of pronotum and hemelytra covered with pale long yellowish semierected setae. Tip of clavus dark. Legs pale yellow. Spines on tibia pale brown. Proportion of antennal segments 15: 55: 33: 28 (♂), 15: 55: 35: 30 (♀). Diatone: 0.56 (♂), 0.57 (♀). Synthlipsis: 0.26–0.28 (♂, ♀). Width of eye: 0.13 (♂,♀). Ocular index: 2 (♂,♀). Pronotum 2.6 times as broad basally as long in middle. First antennal segment 0.32 times as long as diatone. Second antennal segment 1.2 times as long as diatone. Diatone 0.65–0.69 times as broad as basal width of pronotum. The male genitalia: Right paramere very small. Left paramere (Fig. 2) with thin and curved hypophysis, sensory lobe with tooth-like process. Theca robust. Endosoma (Fig. 3) rather short and straight, apical process small and curved (Fig. 4), subapical process broad, leaning backwards, more or less triangular and marginally coarsely dentate (Fig. 5) Habitat. On cultivated Elaeagnus angustifolia around an alfalfa field. Etymology. Named after the Kerman province (South of Iran). Differential diagnosis. The new species is similar to E. guttata with some distinctions. No orange mark was observed on the head (in E. guttata with two spots on the head), pronotum only with two spots (in E. guttata with a transverse row of four spots), rostrum never reaching hind coxae (in E. guttata rostrum extending to hind coxae), clavus with one yellowish orange mark in the middle (in E. guttata with two marks), antennal segments longer than in E. guttata. Male genitalia as in E. guttata, but vesica with small and curved apical process (in E. guttata and E. aspera apical process claw like and longer (Fig. 7 A–B)), vesical subapical process broad, leaning backwards, more or less triangular and marginally coarsely dentate (not as in E. guttata, E. aspera or E. subfasciata Wagner (Fig. 7 A–C).Published as part of Hosseini, Reza & Shamsi, Mohsen, 2014, A new species of the genus Ectagela Schmidt from Iran (Hemiptera, Heteroptera, Miridae, Phylinae), pp. 389-394 in Zootaxa 3802 (3) on pages 390-393, DOI: 10.11646/zootaxa.3802.3.8, http://zenodo.org/record/22796
Progamotaenia aemulans Beveridge & Shamsi, 2009, sp. nov.
No full textProgamotaenia aemulans sp. nov. (Figs 31–37) Synonyms: P. festiva (Rudolphi, 1819) sensu Spratt et al. (1991), Beveridge et al. 1998, Turni and Smales 2001. Host: Macropus dorsalis (Gray) (Marsupialia: Macropodidae). Site in host: bile ducts. Types: Holotype, Taunton Stn via Dingo, Queensland (23º 39’ 149º 20’), coll. C. Turni, 1996, SAM 29360 (S); paratypes, same data, SAM 29361 (S), BMNH 2008.6.3.9-10 (S). Etymology: rivalling or equalling, indicating close similarity to P. fellicola. Material examined: From Macropus dorsalis: Queensland: types; 1 specimen, 15 km N of Marlborough (SAM 28945, AM 495438); 1 specimen, 48 km E of Moonie (SAM 29362); 1 specimen, Milman (SAM 21508); 2 specimens, Charters Towers (SAM 29363); 1 specimen, Pallamana Stn via Charters Towers (SAM 22284); 1 specimen, Harvest Home Stn via Charters Towers (SAM 22283). Description: Small, elongate worms, 20–80 (41) long, maximum width 2–5 (4) with 84–192 (136) segments in gravid specimens. Scolex 0.88–1.14 (1.01) in diameter, squat, mildly 4–lobed; suckers circular, 0.293 –0.374 (0.333) in diameter. Neck short. First mature segment 40–70th (51). Mature segments craspedote, 1.01–3.04 (2.02) wide, 0.163 –0.374 (0.245) long. Genital atrium small, in posterior part of lateral segment margin; cirrus sac elongate, extending well beyond osmoregulatory canals, 0.228 –0.423 (0.341) long, 0.052 –0.085 (0.062) wide; cirrus unarmed; internal seminal vesicle occupies approx. 2/3–3/4 of volume of cirrus sac, 0.078 –0.247 (0.147) long, 0.013 –0.059 (0.036) wide; elongate external seminal vesicle, covered with glandular cells, 0.078 –0.293 (0.153) long, 0.026 –0.098 (0.064) wide; vas deferens coils medially, dorsal to uterus; testes arranged in anterior half of segment between osmoregulatory canals; space between canals and testis fields; testes arranged in 2 dorso-ventral layers, almost invariably in single band or more rarely in 2 separate groups separated by small space; segments with single band or 2 groups occur in same specimen; in 10 specimens, 20 of 353 segments had testes in 2 groups. Testes 0.046 –0.078 (0.060) in diameter; testis number 78–109 (89). Vagina tubiform, lacking glandular investment, opens to genital atrium posterior to cirrus sac, leads to ovoid to sub-spherical seminal receptacle 0.150 –0.293 (0.194) x 0.098 –0.247 (0.137). Ovary flabelliform, medial to seminal receptacle 0.052 –0.111 (0.80) x 0.046 –0.111 (0.066), fully developed in c. 12 segments; vitellarium reniform, posterior to ovary, 0.078 –0.195 (0.140) x 0.046 –0.130 (0.082); Mehlis’ gland anterior and medial to vitellarium, c. 0.06 in diameter. Uteri paired in each segment, transverse, tubular; early uterus extends from level of ovary to or slightly beyond proximal pole of cirrus sac; developing uterus extends medially and laterally, lateral extensions crossing osmoregulatory canals dorsally; uteri of each segment do not meet in mid-line. Gravid segments 0.228 –0.569 (0.389) long, 1.84–3.82 (3.08) wide. Egg spherical, shell smooth, 0.024 –0.029 (0.026) in diameter; pyriform apparatus conical, terminating in numerous fine filaments at apex; oncosphere 0.010 –0.015 (0.014) in diameter. Osmoregulatory canals paired; ventral canal generally wider than dorsal, medial to it; ventral canal 0.013 –0.033 (0.022) in diameter, dorsal canal 0.010 –0.033 (0.016) in diameter; transverse canal connects ventral canal at posterior margin of each segment; accessory canals absent. Remarks. This species most closely resembles P. fellicola in overall size and number of segments, in the cirrus sac projecting well into the medulla and in having a distinctive space between the osmoregulatory canals and the testis fields. It is distinguished from all congeners by these characters. The two species, P.aemulans and P. fellicola, scarcely differ in morphological characters, but are quite distinct genetically and are apparently host specific (Beveridge et al. 2007). The minor differences observable are in scolex diameter, which is 0.65–0.89 mm in P. fellicola, and 0.89–1.14 mm in P. aemulans and in differences in the rate of maturation of segments, the first mature segment appearing between segments 25–45 (34) in P. fellicola and between 40–70 (51) in P. aemulans. These are quite minor morphological differences and alone would scarcely warrant the erection of a new species. However, the genetic differentiation between the two is based on both MEE and DNA sequence data (Baverstock et al. 1985; Beveridge et al. 2007), leaving little doubt that the cestodes from these two hosts represent distinct species. The material upon which the new species is based came from the same localities as “ M. dorsalis parasite type 1” of Baverstock et al. (1985) and sequences numbers 27 and 28 in Beveridge et al. (2007). The data of Baverstock et al. (1985) suggested that P. fellicola could also occur in M. dorsalis, although the subsequent study of Beveridge et al. (2007) did not confirm this finding. If the data of Baverstock et al. (1985) are correct then it provides compelling evidence that two species are involved as genetic distinction can be maintained within the same host species. A new species is therefore proposed for the material from M. dorsalis and is differentiated from P. fellicola primarily on the basis of scolex size and rate of maturation of the genitalia. At several of the localities from which this species was collected, M. dorsalis was also parasitised by P. festiva. However, it proved possible to separate the two species quite readily based on testis distribution and the extent to which the cirrus sac extended into the medulla.Published as part of Beveridge, I. & Shamsi, S., 2009, Revision of the Progamotaenia festiva species complex (Cestoda: Anoplocephalidae) from Australasian marsupials, with the resurrection of P. fellicola (Nybelin, 1917) comb. nov., pp. 1-29 in Zootaxa 1990 on pages 15-1
Short communication: Morphological and genetic characterisation of selected Contracaecum (Nematoda: Anisakidae) larvae in Iran
No full textIn their life cycle, Contracaecum spp infect marine mammals and piscivorous birds as definitive hosts and crustaceans and a wide range of fish species as their intermediate hosts (Anderson, 2000). Humans can accidentally be infected with larval stages of these nematodes, leading to a sever disease generally known as anisakidosis (Shamsi and Butcher, 2011). The disease now is considered as an emergence zoonotic disease and therefore, these parasites attracted attention of scientists in different parts of the world and various aspects of their biology and lifecycle is being investigated (Audicana et al., 2002; Nadler et al., 2005; D'Amelio et al., 2007; Shamsi et al., 2008; Shamsi et al., 2009a, b).Publishe
Progamotaenia dilatata Beveridge & Shamsi, 2009, sp. nov.
No full textProgamotaenia dilatata sp. nov. (Figs 44–50) Synonyms: Progamotaenia festiva (Rudolphi, 1819) in part, Beveridge (1976), Beveridge et al. (1985, 1998), Spratt et al. (1991). Host: Wallabia bicolor (Desmarest) (Marsupialia: Macropodidae). Site in host: bile ducts. Types: Holotype, Nariel, Victoria (36º 20'S 147º 48'E), coll. D.M. Spratt, 29.v.1974, SAM 29364; 2 paratypes, same data SAM 29365. Etymology: from dilatatus (= widened) referring to the broad anterior end of this species. Material examined: From Wallabia bicolor (swamp wallaby): Queensland: 1 specimen, Dingo Beach (SAM 29370 (S)), 1 specimen, Airlie Beach (SAM 29376 (S)); 2 specimens, Rockhampton (SAM 19757 (S)); New South Wales: 6 specimens, Dubbo (SAM 29368 (S)), 1 specimen, Ourimbah (SAM 20067 (S), 1116(W)), 1 specimen, Nowra (SAM 21489 (S)); Australian Capital Territory: 1 specimen, Tidbinbilla (WLHC S310 (S), C235 (W), BMNH 2008.3.6.12 (S)); Victoria: fragments, Nariel (SAM 29366 (S), 25408(W)), 3 specimens, Cudgewa (SAM 20825, WLHC C6, C12 (S)), 2 specimens, Dartmouth (SAM 20928); 1 specimen, Dixon’s Creek (SAM 29369 (S)). Description: Broad worms, 12–58 (35) long, maximum width 3–8 (5.7) with 92–228 (167) segments in gravid specimens. Scolex 0.85–1.30 (1.06) in diameter, squat, weakly 4-lobed; suckers circular, 0.293 –0.569 (0.436) in diameter. Neck very short. First mature segment 22–41th (32, n=7). Mature segments craspedote, 1.46–2.68 (2.11) wide, 0.065 –0.179 (0.125) long. Genital atrium small, in middle or slightly posterior to middle of lateral segment margin; cirrus sac elongate, extending well beyond osmoregulatory canals, 0.163 –0.598 (0.423) long, 0.046 –0.117 (0.079) wide; cirrus unarmed; internal seminal vesicle occupies approx. 2/3–3/4 of volume of cirrus sac, 0.065 –0.377 (0.243) long, 0.020 –0.052 (0.040) wide; elongate external seminal vesicle, covered with layer of glandular cells, 0.072 –0.208 (0.134) long, 0.033 –0.143 (0.070) wide; vas deferens coils medially, dorsal to uterus; testes arranged in anterior half of segment between osmoregulatory canals; no prominent space between canals and testis fields; testes arranged in 2 dorso-ventral layers, in single band or in 2 separate groups separated by small space. Testes 0.033 –0.065 (0.050) in diameter; testis number 68–78 (75, n=5). Vagina tubiform, lacking glandular investment, opens to genital atrium posterior to cirrus sac, leads to ovoid to subspherical seminal receptacle 0.130 –0.293 (0.212) x 0.052 –0.195 (0.104). Ovary flabelliform, medial to seminal receptacle 0.065 –0.124 (0.085) x 0.033 –0.078 (0.051), fully developed in few segments; vitellarium reniform, posterior to ovary, 0.078 –0.195 (0.124) x 0.046 –0.098 (0.066); Mehlis’ gland anterior and medial to vitellarium. Uteri paired in each segment, transverse, tubular; early uterus extends from level of ovary to or beyond proximal pole of cirrus sac; developing uterus extends medially and laterally, lateral extensions crossing osmoregulatory canals dorsally; uteri of each segment do not meet in mid-line. Gravid segments 0.147 –0.406 (0.241) long, 2.28–4.23 (3.27) wide. Egg spherical, shell smooth, 0.055 –0.062 (0.058) in diameter; pyriform apparatus conical, terminating in numerous fine filaments at apex; oncosphere 0.012 –0.016 (0.013) in diameter. Osmoregulatory canals paired; ventral canal generally wider than dorsal, medial to it; ventral canal 0.013 –0.046 (0.023) in diameter, dorsal canal 0.007 –0.026 (0.013) in diameter; transverse canal connects ventral canal at posterior margin of each segment; accessory canals absent. Remarks. P. dilatata differs from P. festiva in having a very short neck and a cirrus sac which extends well into the medulla. It differs from P. fellicola and P. aemulans in lacking a distinctive space between the testis fields and the osmoregulatory canals, and from P. pulchella in that the testes are usually distributed in a single band rather than being invariably distributed in two separate groups. It can be distinguished from P. corniculata by the long neck of the latter species and by the fact that the pyriform apparatus of P. corniculata terminates in two separate horns without reflexed filaments. P. dilatata differs from P. onychogale in being an elongate cestode rather than being short and foliiform; P onychogale has up to 84 segments while P. dilatata has 92–228 segments. P. dilatata differs from P. adspersa in M. irma in that the cirrus sac of the latter species extends just across the osmoregulatory canals in to the medulla while approximately 50% of the cirrus sac of P. dilatata lies within the medulla. In addition, the size of the suckers of P. dilatata (0.29–57 (0.44) mm) exceeds those of P. adspersa (0.18–0.26 (0.23) mm). P. dilatata is readily distinguishable from P. vombati in the shape of the scolex (Figs. 45, 46) and in the number of testes per segment which are 83–122 (98) in P. vombati and 68–78 (75) in P. dilatata.Published as part of Beveridge, I. & Shamsi, S., 2009, Revision of the Progamotaenia festiva species complex (Cestoda: Anoplocephalidae) from Australasian marsupials, with the resurrection of P. fellicola (Nybelin, 1917) comb. nov., pp. 1-29 in Zootaxa 1990 on pages 19-2
Untapping Industrial Flexibility via Waste Heat-Driven Pumped Thermal Energy Storage Systems
No full textPumped thermal energy storage (PTES) is a promising long-duration energy storage technology. Nevertheless, PTES shows intermediate round-trip efficiency (RTE—0.5 ÷ 0.7) and significant CAPEX. sCO2 heat pumps and power cycles could reduce PTES CAPEX, particularly via reversible and flexible machines. Furthermore, the possibility to exploit freely available heat sources (such as waste heat and/or CSP inputs) could increase RTE, making the system capable of an apparent RTE > 100% as well as reducing CAPEX, avoiding the need for two TES systems. This paper analyses the potential valorization of industrial waste heat (WH) to enhance PTES thermodynamic performance as well as increase industrial energy efficiency, valorizing different levels of WH sources in the 100–400 °C temperature range. In fact, the use of additional heat, otherwise dumped into ambient surroundings, may contribute to avoiding the need for a second TES, thus enhancing plant competitiveness. Starting from an assessment of the most relevant industrial sectors to apply the proposed solution (looking at available WH and electric flexibility needed), this paper analyses the feasibility of a specific sCO2-based PTES case study, where the cycle is integrated into a cement production plant with a WH temperature of around 350 °C. It is demonstrated that the CAPEX of the proposed systems are still relevant and only a robust exploitation of the PTES in the ancillary service market could attract industrial customers’ interest in sCO2 PTES
Thermo-economic performance evaluation of thermally integrated Carnot battery(TI-PTES) for freely available heat sources
No full textIn a scenario driven by non-programmable renewable energy sources (RES) being integrated into the grid, there is a critical need for large-scale energy storage solutions for maintaining grid stability and providing services of frequency regulation as being currently provided by conventional thermal power plants. Among various options, Carnot batteries stand out for their ability to provide GWh scale storage without geographical limitations, at reasonable costs, integrating power to heat to power technologies to thermal energy storage (TES), however at the cost of relatively low Round Trip Efficiencies (RTE). This study delves into a new concept in Carnot battery called Thermally Integrated Pumped Thermal Electricity Storage (TI-PTES) utilizing sCO2 heat pump and power cycles. Thermal integration of heat source in the charging cycle leads to attractive Round Trip Efficiency(RTE) values as compared to conventional PTES. Additionally, using supercritical carbon dioxide (sCO2) as a working fluid offers several advantages of compact designs leading to reduced overall footprint compared to other fluid-based technologies. The study analyzes thermo-economic performance of sCO2 based TI-PTES using an in-house tool WTEMP-EVO; for integration of various industrial and renewable heat sources into the PTES system while exploiting market available thermal energy storage options through a mapping approach
Metabolic consequences of timed feeding in mice
No full textNo abstract availableNurulaini Abu Shamsi, Mark David Salkeld, Leewen Rattanatray, Athena Voultsios, Tamara Jayne Varcoe, Michael James Boden, David John Kennawa
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Design and Development of a Date Harvesting Machine
No full textExisting date harvesting machines are vehicles equipped with a long arm to lift a man
on a platform to harvest the fruits. The arm and the vehicle are heavy (4 to 8 tonnes),
expensive (from £16 000) and are not sufficiently manoeuvrable in constricted date
groves. Most dates in the main producing countries, including Iran, are therefore
harvested manually. The manual method is unsafe, slow, expensive (£0.63 per tree)
and the fruit quality is often damaged.
A light, weight 4 wheel drive, remotely controlled tree climbing machine is, therefore,
a potential solution to the problems of harvesting and servicing (such as pollinating
and pruning). A prototype of such a device was designed, developed and evaluated
under laboratory conditions. To determine the operating characteristics and feasibility
the machine was designed to climb the tree using pneumatic tyres as traction wheels.
The machine can be transformed to ground drive and move between trees under its
own power. This approach reduces the machine weight, cost and size because the
tree trunk is used as a support for the machine to climb to the fruits. It is operated
and controlled from the ground which improves the operator safety.
A vertical traction theory for this type of machine has been developed based on the
tree size and surface characteristics and machine size and weight which can be used to
design date harvesting and climbing machines with different capacities. The test
results showed that the experimental machine could achieve a tractive efficiency of
90% and that the optimum wheel slippage was between 10 - 15%. The machine
consumes a maximum of 1.4 kW power which is only 3% of the power requirement
of existing systems. The machine weight is 150 kg which is 2- 4% of the existing
systems' weight. It is capable of climbing the tree at a maximum speed of 0.27 m/s
although the optimum speed is 0.17 m/s for best control. The prototype can carry a
payload of 100 kg of dates and, considering a field efficiency of 75%, it can
potentially harvest a tree in 22 minutes which is 18 % faster than the manual system in Iran and 6% faster than one of the mechanised systems used in Saudi Arabia. The
harvester can work on tree diameter ranges from 300 to 850 mm and can pass over
the tree leaf bases of 41 mm high. The machine should not damage the tree because
the tree resists the machine stresses with a minimum safety factor of 7.
An economic analysis showed that it can be manufactured in Iran at 20 % of the cost
of existing systems. The machine cost per tree is equal to the hand harvesting method
(£O. 63 per tree) for Iranian farmers if it harvests 978 trees per year
- …
