Antioxidant Activities of Rosemary, Sage, and Sumac Extracts and Their Combinations on Stability of Natural Peanut Oil

Musa ?zcan 한국식품영양과학회 2003 Journal of medicinal food Vol.6 No.3

The antioxidant efficacy of rosemary (Rosmarinus officinalisL.), sage (Salvia fruticosaL.), and sumac (RhuscoriariaL.) extracts and combinations at 4% concentrations (wt/vol, extract/oil) were investigated. Methanolic extracts ofrosemary, sage, sumac, and their combinations were applied to peanut oil stored at 80° C for 24 h. The antioxidant effect wasdetermined by measuring the peroxide value. All extracts showed antioxidant effects compared with control. But the antiox-idant effect of all extracts was low compared with that of butylated hydroxytoluene. Rosemary extract (except for 3 and 4 h)exhibited the most antioxidant effect compared with other individual extracts. Of blends, the most effective ones were sageplus sumac combinations. Sumac extract is also promising as a source of natural antioxidants.

Generalized Hardy-Berndt sums

M. Can,M. Cenkci,V. Kurt 장전수학회 2006 Proceedings of the Jangjeon mathematical society Vol.9 No.1

In this paper, explicit generalizations of Hardy-Berndt sums, which are arising in the transformation formula of the logarithms of the classical theta functions, are de¯ned. The connection between generalized Dedekind sums is also given, and some ¯nite and in¯nite series representations are obtained in terms of trigonometric functions and Hurwitz's zeta function. By using contour integration, the reciprocity laws and some relations for these generalized sums are given as well.

Twisted Dedekind type sums associated with Barnes' type multiple Frobenius-Euler l-functions

M. Can,M. Cenkci,V. Kurt,Y. Simsek 장전수학회 2009 Advanced Studies in Contemporary Mathematics Vol.18 No.2

The aim of this paper is to construct new Dedekind type sums. We construct generating functions of Barnes' type multiple Frobenius-Euler numbers and polynomials. By applying Mellin transformation to these functions, we de¯ne Barnes' type multiple l-functions, which interpolate Frobenius-Euler numbers at negative integers. By using generalizations of the Frobenius-Euler functions, we de¯ne generalized Dedekind type sums and prove corresponding reciprocity law. We also give twisted versions of the Frobenius-Euler polynomials and new Dedekind type sums and corresponding reciprocity law. Furthermore, by using p-adic q-Volkenborn integral and twisted (h,q)-Bernoulli functions, we construct p-adic (h,q)-higher order Dedekind type sums. By using relation between Bernoulli and Frobenius-Euler functions, we also de¯ne analogues of Hardy-Berndt type sums. We give some new relations related to to these sums as well.

Link Adaptation and Selection Method for OFDM Based Wireless Relay Networks

B. Can,H. Yomo,E. D. Carvalho 한국통신학회 2007 Journal of communications and networks Vol.9 No.2

T?RK?YE'DE E??T?M ALANINDA TOPLAM KAL?TE Y?NET?M? UYGULAMALARINA GENEL B?R BAKI?

?zcan YILMAZ 한국외국어대학교(글로벌캠퍼스) 중동연구소 2006 중동연구 Vol.24 No.2

<Abstract> General View to the Total Quality Management Applications of the Turkish Educational System Özcan YILMAZ Ankara University, urkey Total quality management is, the strong leadership, and the constructive organization, and with a team effort, as a result, the least faulty product can be produced, with the highest customer satisfaction. In the first volume of this study, we tried to explain the evolution of the management from the classic way, to the Total Quality Management with changes to the human’s social life, and the effects of the industrialization. In the second volume, The Total Quality Management is described, and we explained that why do we need and what are principles of the Total Quality Management, are explained. In the third and the last volume, we talked about the difficulties of the application of the Total Quality Management systems onto the Turkish educational programs, and systems, and we tried to introduce some possible solutions to those problems. We have emphasized that, people who are benefited from those educational institutions which implemented the principles of the total quality management programs, become the leaders of their countries, and they help to advance their nations, into the more developed group of countries. Key Word: Total quality management, Customer satisfaction, Strong leadership, Educational programs, Evolution of the management

Determination of Mineral Contents of Turkish Herbal Tea (Salvia aucheri var. canescens) at Different Infusion Periods

Musa Ocan 한국식품영양과학회 2005 Journal of medicinal food Vol.8 No.1

Inductively coupled plasma atomic emission spectrometry has been used for the determination of contents of major and minor elements in Salvia aucheri var. canescens (sage) and its infusions for different intervals. Twenty-five elements (Al, B, Ba, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, Ln, K, Li, Mg, Mn, Na, Ni, P, Pb, S, Sr, Ti,V, and Zn) were detected in both S. aucheri and its infusions. The ranges of mineral levels varied from Cd (1.6668 mg/kg) to K (13,570 mg/kg) and Ni (0.05273 mg/kg) to K (196.25 mg/kg) in the herb and its infusions, respectively. The levels of K, Ca, Na, Mg, and S in all infusions in this work were higher than those of the other elements. However, Al, Ba, Ca, Cd, Co, Cu, Fe, Li, K, Mg, Na, Ni, P, Pb, Sr, Ti, and Zn contents were high in the first period of infusion. As a result, the first period of infusion may be proposed as the optimum infusion time because of nutritional properties. These results may be useful for the evaluation of dietary information.

Mineral Composition of Different Parts of Capparis ovata Desf. var. canescens (Coss.) Heywood Growing Wild in Turkey

Musa Özcan 한국식품영양과학회 2005 Journal of medicinal food Vol.8 No.3

Major and minor mineral contents of young shoots, flower buds, caperberries (fruit), and seeds of CapparisovataDesf. var. canescens(Coss.) Heywood, used as a pickling product in Turkey, were determined by inductively coupledplasma atomic emission spectrometry. Twenty-one minerals were assayed in samples. All materials contained high amountsof Ca, K, Mg, Na, P, Pb, and Zn. The highest levels of Ca (598.3416,947.1 ppm), K (3,093.128,163.9 ppm), Na (57.9444.3ppm), P (1,690.54,153.9 ppm), and Zn (21.135.6 ppm) were found in flower buds. The content of K was high in most casesand ranged from 28,163.9 ppm (flower bud) to 3,093.1 ppm (caper seed). Ba, Cd, Cr, Cu, Li, Ni, Pb, and Se contents of ca-per plant organs were found to be very low. Consequently, caper parts were rich in minerals, and they may be valuable forfood uses. The results may also be useful for the evaluation of nutritional information.

Effect of Different Locations on the Chemical Composition of Essential Oils of Laurel (Laurus nobilis L.) Leaves Growing Wild in Turkey

Musa Özcan,Jean-Claude Chalchat 한국식품영양과학회 2005 Journal of medicinal food Vol.8 No.3

The essential oil components of Laurus nobilisgathered from seven different locations of Turkey were iden-tified by gas chromatography/mass spectrometry. The oil yields on a dry weight basis ranged between 1.4% to 2.6%. The ma-jor component was 1,8-cineole (51.7368.48%); other predominant components were .-terpinyl acetate (4.049.87%), sabinene(4.447.75%), .-pinene (2.934.89%), .-pinene (2.583.91%), terpinene-4-ol (1.333.24%), and .-terpineol (0.953.05%).Minor qualitative and major quantitative variations of some compounds were determined with respect to localities of collec-tion. As a result, the 1,8-cineole content of these oils was significantly higher than those of other constituents of L. nobilis.Laurel is usually considered as the natural source of this compound, used in the flavor and fragrance industry.

Computerized analysis of occlusal contacts in bruxism patients treated with occlusal splint therapy

Hasan Önder Gümüş,Halil İbrahim Kılınç,Süleyman Hakan Tuna,Nihal Özcan 대한치과보철학회 2013 The Journal of Advanced Prosthodontics Vol.5 No.3

PURPOSE. Occlusal splints are commonly used to prevent tooth wear caused by bruxism. However, the effects of splints on occlusion are still unclear. Although it is rarely alluded in literature, splints can provoke severe occlusal alterations and other complications. This study was aimed to identify differences in the responses of individuals with bruxism and healthy individuals to a full-arch maxillary stabilization splint in terms of occlusal changes. MATERIALS AND METHODS. Occlusal contacts in 20 (5 male, 15 female) bruxism patients and 20 (5 male, 15 female) controls with normal occlusion were evaluated before and after occlusal splint therapy. T-Scan III, a computerized occlusal analysis system, was used to simultaneously measure occlusion and disclusion times as well as left-right and anterior-posterior contact distributions before splint therapy and 3 months after therapy. Wilcoxon and Mann-Whitney U tests were used for statistical analyses (α=.05). RESULTS. No differences were found in the posterior contact of bruxism patients before and after stabilization splint treatment. However, differences in posterior contact were observed between bruxists and normal individuals prior to treatment, and this difference disappeared following treatment. CONCLUSION. The results of this study showed the use of a stabilization splint may not have an effect on occlusion. However, the area of posterior occlusal contact among bruxists was found to be greater than that of normal individuals. According to this study, the clinical use of splints may be harmless.

漢代私學의 硏究

許玉仙 서울대학교 교육대학원 1972 論文集 - 서울대학교 교육대학원 Vol.9 No.-