4,616 research outputs found
Research on honeybee (Apis mellifera L.) foraging preferences among varieties of phacelia (Phacelia tanacetifolia Bentham)
No full textTürkiye'de arıcılar kolonilerini geliştirmek amacıyla bal üretim dönemi öncesi, erken ilkbaharda Akdeniz sahil kesiminde kışlatmaları ve göçer arıcılık sistemini benimsemeleri üretimin temel presibini oluşturmaktadır. Arılar için narenciye, meyve, yem bitkileri alanları ve meralar başlıca besin kaynaklarıdır. Ancak bu bitkilerin tarımının monokültür şeklinde çok geniş alanlarda yapılmasına karşın, çiçeklenme dönemlerinin kısa süreli oluşu, sürdürülebilir arıcılık faaliyetlerini kısıtlamaktadır. Bu nedenle arılar için besin kaynağı olabilecek yeni bitkilerin yetiştirilmesi önem kazanmaktadır. Bu araştırma, Çukurova Bölgesi'de yeni denenen üç fazelya çeşidi arasında bal arılarının tercihlerini belirlemek amacıyla planlanmıştır. Bu amaçla Turan 82, T-98/1 ve T-98/2 (Phacelia tanacetifolia Bentham) çeşitleri materyal olarak seçilmiştir. Bu üç farklı fazelya çeşidinde çiçeklenme periyodu boyunca çiçek yoğunluğu ve çiçekleri ziyaret eden işçi arı sayıları, her bir çeşide ait parselde belirlenen üç ayrı noktada haftada bir gün belirlenmeye çalışılmıştır. Turan 82, T-98/1 ve T-98/2 fazelya çeşitlerinde birim alandaki çiçek sayısı sırasıyla 1077,60±231,43, 971,10±283,06 ve 1021,10±403,57 çiçek/ olarak bulunmuştur. Çiçekleri ziyaret eden arı sayıları ise bu çeşitlerde sırasıyla ortalama 68,10±17,30, 62,36±14,93 ve 62,23±21,57 bal arısı/ arasında değişmiştir. Çukurova Bölgesi'nde ekilen üç fazelya çeşidini çiçeklenme periyodunda ziyaret eden arı sayıları ile çeşitler arasındaki ilişki önemsiz (p>0,05) bulunmuştur. Arılık çevresinde bal üretim dönemi girilmeden önce erken ilkbaharda fazelya yetiştirilmesi, çşide bağımlı olmadan arı kolonilerinin gelişimine önemli düzeyde etkili olabilmiştir.Migratory management of beehives is essential for the beekeepers in Turkey, both for wintering their colonies at the low coastal arable lands of the Mediterranean region and for the colonies in early spring before reaching the main nectar flowering season. Existing citrus fields, pasture lands and forage fields are the main food sources for the bees. But these plants are cultivated in large areas as monoculture with a short flowering period, which is a hindering factor for sustainable beekeeping. Therefore, introduction of new crops as food sources for bees is important. the objective of this research was to determine the preferences of bees is important. The objective of this research was to determine the preferences of bees for the Phacelia species, which were new to the Çukurova region for natural feeding of beess by planting these around the apiary. Three Phacelia (Phacelia tanacetifolia Bentham) varieties with many flowers, namely Turan 82, T-98/1 and T-98/2 were introduced. The study counted the flower density and the visitor worker bees during the flowering period one day per week at each of the three plots. the densities of the flowers were:1077,60±231,43 flowers/ , for Turan 82 971,10±283,06 flowers/ for T-98/1, 1021,10±403,57 flowers/ for T-98/2
A Comparison of Islamic Vs Conventional Banks in Turkey
No full text##nofulltext##Semen Son Turan (MEF Author)..
On the weighted variable exponent amalgam space W(L-P(X) , L-M(Q))
No full textGürkanlı, Ahmet Turan (Arel Author)In [4], a new family W(L-p(x), L-m(q))of Wiener amalgam spaces was defined and investigated some properties of these spaces, where local component is a variable exponent Lebesgue space L-p(x) (R) and the global component is a weighted Lebesgue space L-m(q) (R). This present paper is a sequel to our work [4]. In Section 2, we discuss necessary and sufficient conditions for the equality W (L-p(x), L-m(q)) = L-q (R). Later we give some characterization of Wiener amalgam space W (L-p(x), L-m(q)). In Section 3 we define the Wiener amalgam space W (FLp(x), L-m(q)) and investigate some properties of this space, where FLp(x) is the image of L-p(x)) under the Fourier transform. In Section 4, we discuss boundedness of the Hardy-Littlewood maximal operator between some Wiener amalgam spaces
Prof. M. Fuad Köprülü
No full textFuad Köprülü'nün ilmî neşriyatı başlıklı bibliyografya, Prof. Osman Turan tarafından hazırlanmıştır."Donated by Prof. İrfan Şahinbaş and his wife.
Vessel charter rate estimation for offshore wind O&M activities
No full textEstimating the cost of vessels is an important factor for the operation & maintenance (O&M) costs of offshore wind farms. Accurate cost estimation is required during operation of the wind farm. This paper presents the development of the O&M charter rate modelling for offshore wind turbine jack-up vessels under different op-erational strategies. The main objectives of this modelling are to explore the differentiation of charter rates as-sociated with the charter periods and with the capabilities of different vessels; as well as to allow offshore wind farm operators to plan their maintenance strategies through considering the share of vessels’ costs in the overall maintenance costs. In this respect, various jack-up vessels in the offshore wind industry are investigat-ed and the most effective charter periods are identified. The seasonal effects on the charter rates are also con-sidered to provide critical insight into the selection of the optimum charter rate scenario
Effect of reference altitudes for a turbofan engine with the aid of specific-exergy based method
No full textWOS: 000311077100008This paper presents effect of reference altitudes on the exergetic efficiency of a engine with the aid of specific exergy method. between 4000-9000 m. In the analysis, and exergy efficiency of the engine is found to be from 50.34% at 4000 m to 48.91% at 9000 m. Results of this study show that increase in reference altitude decreases the exergy efficiency and increases the energy efficiency of the engine. Additionally, specific exergy analysis can also be used as an integrated indicator for determining the exergetic efficiency.Anadolu University in TurkeyThe author would like to thank Anadolu University in Turkey for their financial, technical and knowledge support
Alburnoides velioglui Turan, Kaya, Ekmekçi & Doğan, 2014, sp. n.
No full textAlburnoides velioglui, sp. n. (Fig. 3) Holotype. FFR 0 1094, male, 79 mm SL; Turkey: Erzurum Prov.: Sırlı Stream, Euphrates River drainage; 40 ° 12 ’ 34 ’’N, 41 °04’00’’E, coll. D. Turan, Y. Saral and M. Çelik, 17 Apr. 2004. Paratypes. FFR 0 1043, 15, 52–88 mm SL; same data as holotype. – FFR 0 1036, 8, 30–83 mm SL; Turkey: Erzurum Prov.: Toprakkale Stream, Euphrates River drainage; D. Turan, Y. Saral and M. Çelik, 0 3 Aug. 2007. – FFR 0 1106, 20, 51–88 mm SL; Turkey: Malatya Prov.: Sultansuyu Stream, Euphrates River drainage; D. Turan, E. Doğan and C. Kaya, 19 Oct. 2013. Additional material (non types). FFR 0 1105, 7, 50–69 mm SL; Turkey: Erzurum Prov.: Karasu Stream, Euphrates River drainage; D. Turan, C. Kaya and E. Doğan, 8 Aug. 2013. – FFR 0 1096, 5, 58–67 mm SL; Turkey: Sivas Prov.: Divriği Stream, Euphrates River drainage; D. Turan, C. Kaya and E. Doğan, 10 Aug. 2013. – FFR 0 1029, 2, 67–85 mm SL; Turkey: Tunceli Prov.: Munzur Stream, Euphrates River drainage; D. Turan, Y. Saral and M. Çelik, 12 Aug. 2013. Diagnosis. Alburnoides velioglui is distinguished from all species of Alburnoides in Turkey and adjacent waters by the following combination of characters (none unique to the species): a poorly developed ventral keel between pelvic and anal fins, completely scaled; body depth at dorsal-fin origin 24–29 % SL; caudal-peduncle depth 10–12 % SL and 1.9–2.2 times in its length; predorsal length 48–55 % SL; mouth terminal, the tip of the mouth cleft between level of lower margin of pupil and lower margin of eye; the tip of upper lip not projecting beyond the lower lip (tip of both lips are equal) in most specimens; snout with rounded tip; dark grey stripe distinct on anterior and posterior parts of body; pigmentation of lateral-line distinct (Fig. 3); 45–53 + 1–2 lateral-line scales, 9–11 scale rows between lateral-line and dorsal-fin origin, 4–5 scale rows between lateral-line and anal-fin origin, 11 ½– 13 ½ branched anal-fin rays; pharyngeal teeth 5.1 – 2.4 or 5.2 – 2.4, markedly hooked; number of total vertebrae 41–42 with mode of 42 (including 4 Weberian vertebrae and last complex centrum), comprising 20–22 with mode of 21 abdominal, and 20–21 with mode of 21 caudal vertebrae. Description. General appearance is shown in Figure 3; morphometric and meristic data are given in Tables 1 and 2. Body moderately deep and slightly compressed laterally. Caudal-peduncle depth 1.9–2.2 times in its length. Dorsal profile slightly convex, ventral profile equal or less convex than dorsal profile. Predorsal length 1.8–2.1 times in SL. Prepelvic length 2.0– 2.2 times in SL. Head short, approximately 0.9 –1.0 times body depth at dorsal fin origin, dorsal profile slightly convex at interorbital area, markedly convex at snout. Snout somewhat short, with rounded tip, approximately equal to eye diameter and smaller than interorbital width. Mouth terminal, with slightly marked chin. The tip of the mouth cleft approximately on level of lower margin of pupil or slightly below. The ventral keel poorly developed, completely scaled. Lateral-line with 46 (1), 47 (3), 48 (5), 49 (6), 50 (5), 51 (1), 52 (1), 53 (2) or 55 (1) scales; 9 (4), 10 (15) or 11 (6) scales rows between lateral-line and dorsal-fin origin; 4 (10) or 5 (15) scales between lateral-line and anal-fin origin. Gill rakers 1–2 + 3–4 = 5–6 on first gill arch. Dorsal fin with 3 simple and 8 ½ (22) and 9 ½ (3) branched rays, outer margin straight or slightly convex, its origin in front of vertical at mid-point of pelvic-anal distance. Pectoral fin short, not reaching pelvic-fin origin, outer margin convex, with 1 simple and 12 (1), 13 (9) or 14 (15) branched rays. Pelvic-fin short, not reaching the origin of anal-fin but reaching anus, with 1 simple and 7 branched rays, outer margin convex. Anal fin slender, with 3 simple and 11 ½ (7), 12 ½ (16) or 13 (2) branched rays, outer margin slightly concave posteriorly. Caudal-fin moderately forked, lobes slightly rounded. Pharyngeal teeth 5.1 – 2.4 or 5.2 – 2.4, markedly hooked. Number of total vertebrae 41 (2) or 42 (18); predorsal vertebrae 13 (8), 14 (11) or 15 (1); number of abdominal vertebrae 20 (2), 21 (13) or 22 (5), and that of caudal vertebrae 20 (4) or 21 (16); the abdominal region equal or longer than the caudal region, and the difference between the abdominal and caudal numbers varies from + 2 to – 1; vertebral formulae 22 + 20 (4), 21 + 21 (14) or 20 + 21 (2). Its maximum known size is 88 mm SL. Sexual dimorphism. There are small tubercles on membrane of anal and pelvic fins in males. The length of the paired fins does not show a statistically significant difference between males and females as it often does in other Alburnoides species. Coloration. Formalin-preserved adults and juveniles brownish on back and upper part of flank, light brownish on lower part of flank and belly. Caudal and dorsal fins light grey; pectoral, pelvic and anal fins yellowish. Pigmentation of lateral-line is distinct on both anterior and posterior parts of body. There is a narrow dark grey stripe (its width smaller than eye diameter) on upper part of flank from posterior margin of operculum to caudal peduncle, distinct anteriorly and posteriorly. Distribution and notes on biology. Alburnoides velioglui is known only from the northern Euphrates drainage (Sırlı and Toprakkale streams [drainages of Karasu] and Karasu Stream]) (Fig. 1). It inhabits swift and clear flowing water with cobble and pebbles. Capoeta umbla (Heckel, 1843); Barbus lacerta Heckel, 1843; Alburnus mossulensis Heckel, 1843, Oxynoemacheilus sp., and Salmo sp. have been collected with A. velioglui. Etymology. The species is named for Hasan Basri Velioğlu, Medical Doctor, who eased and contributed to our earlier and present studies by radiography.Published as part of Turan, Davut, Kaya, Cüneyt, Ekmekçi, F. Güler & Doğan, Esra, 2014, Three new species of Alburnoides (Teleostei: Cyprinidae) from Euphrates River, Eastern Anatolia, Turkey, pp. 101-116 in Zootaxa 3754 (2) on pages 106-108, DOI: 10.11646/zootaxa.3754.2.1, http://zenodo.org/record/22799
Turan and Ramsey numbers in linear triple systems II
No full textIn this paper we continue our studies of Turan and Ramsey numbers in linear triple systems, defined as 3-uniform hypergraphs in which any two triples intersect in at most one vertex. In [7] the two main problems left open were the Turan number of the wicket and the Ramsey property of the sail. In this paper we present some progress towards both of these problems.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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