Bulunan: 4.900 Adet 0.005 sn
Koleksiyon [20]
Tam Metin [2]
Yayın Türü [11]
Yazar [20]
Yayın Yılı [20]
Konu Başlıkları [20]
Yayıncı [20]
Yayın Dili [10]
Dergi Adı [20]
Hypopituitarism due to hypothalamic B-cell lymphoma

Chourmouzi D. | Boulogianni G. | Delaroudis S. | Drevelegas A.

Article | 2005 | Journal Belge de Radiologie88 ( 3 ) , pp.116 - 117

[No abstract available]

Osteochondroma of the talar neck: A rare cause of callosity of the foot dorsum

Keser S. | Bayar A.

Article | 2005 | Journal of the American Podiatric Medical Association95 ( 3 ) , pp.295 - 297

Osteochondroma is the most common benign bone tumor. It rarely affects rearfoot bones, and only a few cases of talar osteochondroma have been reported. We report a case of a solitary osteochondroma of the talus that presented as a painful callus on the anterior portion of the ankle that was refractory to dermatologic treatment.

The analysis of analogy use in the teaching of introductory quantum theory

Didiş N.

Article | 2015 | Chemistry Education Research and Practice16 ( 2 ) , pp.355 - 376

This study analyzes the analogies used in the teaching of introductory quantum theory concepts. Over twelve weeks, the researcher observed each class for a semester and conducted interviews with the students and the instructor. In the interviews, students answered questions about quantum theory concepts, which the instructor had taught them using analogies, and also discussed the effectiveness of these analogies. This study identified 48 analogies used by the instructor over the course of 53 fifty minute classes. The analysis of video recordings of the classes revealed that most of the analogies were constructed at the beginning of . . .the semester during the teaching of the particle nature of waves, which is critical for understanding quantum theory. A large proportion of the analogies were given in verbal format; however, a limited number of pictorial and body motion elements were also used together with the analogies. The analogies were mainly positioned as an embedded activator prior to drawing conclusions about the target. It was also observed that analogies were used as an advance organizer and post synthesizer. In addition, the number of simple and enriched analogies used was similar. A limited number of analog explanations were identified and none of the analogies used indicated strategy identification. The instructor never mentioned the limitation of each analogy during their use in class as well. A large proportion of the analogies used spontaneously included both anthropomorphic and environmental characteristics. Although the presentation medium of the analogies was mainly discourse, the presentation of analogies in role play, story and brainstorming was also identified. In half of the analogy use, the instructor intended their use for clarification of the concepts; however, the use of analogies for introduction of a new topic, gaining attention, increasing participation and discriminating between classical and quantum issues was also observed, indicating a diverse use of analogies. In addition, the interviews revealed that students liked the use of analogies in their classes and believed that they had a positive effect on their understanding of new concepts. © 2015 The Royal Society of Chemistry Daha fazlası Daha az

Index of suspicion

Ermis B. | Karacan M. | Tan H. | Karis C. | Triantafyllidis G. | Zosi P. | Karakaidos D.

Article | 2004 | Pediatrics in Review25 ( 6 ) , pp.209 - 214

[No abstract available]

The features of wollastonite in Balikesir and its use in ceramic materials as an alternative raw material

Haner S. | Haner B.

Article | 2014 | InterCeram: International Ceramic Review63 ( 7 ) , pp.352 - 357

In this work, the influences of wollastonite in Balikesir (Turkey) on ceramic sanitaryware properties were investigated. Samples of wollastonite were collected from the Serçeören deposit in Balikesir. Their characterizations were carried out with the determination of petrographic, physical, mechanical and chemical composition, and by TG-DTA, XRD and SEM. In a second part of the work, tests in sanitaryware compositions were conducted in order to evaluate the suitability of the addition of wollastonite instead of albite in the sanitaryware compositions used in the production of ceramic sanitaryware. The rheological, physical and firin . . .g tests of developed sanitaryware bodies were done with the Creavit® new body development test procedure and, results were compared with each other. After evaluating test results it was seen that wollastonite can be used in ceramic sanitary ware bodies as an alternative raw material Daha fazlası Daha az

Factorisation of positive definite operators

Dikmen C.M. | Reade J.B.

Article | 2008 | Archiv der Mathematik91 ( 4 ) , pp.339 - 343

In this paper we prove Reade's result for the positive definite C 1 kernels by using the factorisation method used by Kühn. © 2008 Birkhaeuser.

Casimir energy of the massless scalar field on S-1 by the point-splitting method

Bayin S.S. | Krisch J.P. | Özcan M.

Article | 1997 | Turkish Journal of Physics21 ( 4 ) , pp.632 - 640

We calculate the Casimir energy of the massless scalar field on a one dimensional Riemann sphere (S-1) using the point-splitting method. We consider the full space, half space and an arc of arbitrary radius. This problem is interesting since it may be solved analytically be several renormalization techniques.

Fine mapping of the Schnyder's crystalline corneal dystrophy locus

Theendaraka V. | Tromp G. | Kuivaniemi H. | White P.S. | Panchal S. | Cox J. | Winters R.S.

Article | 2004 | Human Genetics114 ( 6 ) , pp.594 - 600

Schnyder's crystalline corneal dystrophy (SCCD) is a rare autosomal dominant eye disease with a spectrum of clinical manifestations that may include bilateral corneal clouding, arcus lipoides, and anterior corneal crystalline cholesterol deposition. We have previously performed a genome-wide linkage analysis on two large Swede-Finn families and mapped the SCCD locus to a 16-cM interval between markers D1S2633 and D1S228 on chromosome 1p36. We have collected 11 additional families from Finland, Germany, Turkey, and USA to narrow the critical region for SCCD. Here, we have used haplotype analysis with densely spaced microsatellite mar . . .kers in a total of 13 families to refine the candidate interval. A common disease haplotype was observed among the four Swede-Finn families indicating the presence of a founder effect. Recombination results from all 13 families refined the SCCD locus to 2.32 Mbp between markers D1S1160 and D1S1635. Within this interval, identity-by-state was present in all 13 families for two markers D1S244 and D1S3153, further refining the candidate region to 1.58 Mbp. © Springer-Verlag 2004 Daha fazlası Daha az

Optimization of ultrasound-assisted water extraction conditions for the extraction of phenolic compounds from black mulberry leaves (Morus nigra L.)

Algan Cavuldak Ö. | Vural N. | Akay M.A. | Anlı R.E.

Article | 2019 | Journal of Food Process Engineering42 ( 5 ) , pp.103 - 105

Multiple response optimizations of ultrasound-assisted water extraction (UAWE) conditions for the extraction of phenolic compounds from Morus nigra L. leaves were investigated. The experimental design and optimization of the UAWE were performed using response surface methodology (RSM) coupled with a central composite design (CCD). The optimum conditions of UAWE were determined as extraction time: 15 min, solvent:solid ratio: 85 mL/g and extraction temperature: 55°C. The optimized UAWE was compared with conventional extraction (CE) and it was observed that TPC (21.78 ± 0.50 mg GAE/g dw), TFC (11.70 ± 0.26 mg CAT/g dw), and TAA (66.37 . . . ± 0.66% 1,1-diphenyl-2-picrylhydrazyl [DPPH]) in UAWE were higher than CE. The polyphenolic profile of the extracts obtained from both methods was evaluated and most of the 16 phenolic compounds especially chlorogenic acid (3.47 ± 0.06 mg/g dw), kaempferol (1.39 ± 0.02 mg/g dw) and quarcetin hydrate (1.92 ± 0.01 mg/g dw) were found in higher amounts in UAWE extracts. Practical applications: Black mulberry leaf extract, which is an important source for antioxidants and especially phenolic compounds, has a potential to become a supplement and functional food. Herbal infusion or tea prepared from black mulberry leaves can be an alternative to mostly consumed tea. The extraction and purification of natural antioxidant substances from plant sources make it possible to use these substances in the food industry. It is therefore important to optimize the extraction conditions of natural antioxidants and identify the substances in the extracts obtained. In this study, UAWE for high extraction yield at low temperature was also preferred to extract high quantities of phenolic compounds, which are heat sensitive. UAWE for phenolic extraction from black mulberry leaves was optimized by RSM. The optimized and improved extraction technique obtained from this study can contribute to the food industry by being used in large-scale industrial applications. © 2019 Wiley Periodicals, Inc Daha fazlası Daha az

Scapania gracilis Lindb. (Hepaticae, Scapaniaceae), new to bryophyte flora of Turkey

Ezer T. | Kara R. | Alataş M.

Article | 2013 | Folia Cryptogamica Estonica50 , pp.117 - 119

Scapania gracilis Lindb. is a hygro- to mesophytic liverwort species which is reported for the first time from Turkey. The species is described from material collected from the north-west Anatolia (Sakarya) which has very warm summers and mild winters with high annual rainfall (800-1000 mm) in Marmara region and very humid conditions. Turkish plants are described and illustrated.

Production and characterization of activated carbon from a bituminous coal by chemical activation

Cuhadaroglu D. | Uygun O.A.

Article | 2008 | African Journal of Biotechnology7 ( 20 ) , pp.3706 - 3713

In this study, the use of a bituminous coal for the production of activated carbons with chemical activation was investigated. The effects of process variables such as chemical reagents, activation temperature, impregnation ratio and carbonization temperature were investigated to optimize these parameters. The resultant activated carbons were characterized in terms of iodine number, BET surface area, and total and micropore volumes. Acidic surface groups were established by Fourier Transmittance Infrared Spectroscopy (FTIR) technique. © 2008 Academic Journals.

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