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BAsIsITY PROBLEM AND WEIGHTED sHIFT OPERATORs

Acta Mathematica scientia 2014年第5期34卷 1655-1660页

作者： M.GRDAL M.T.GARAYEV s.saltan suleyman Demirel University Department of Mathematics Department of Mathematics College of Science King Saud UniversityP.O.Box 2455 Riyadh 11451 Saudi Arabia

We investigate a basisity problem in the space =lpA（D）and in its invariant sub-spaces. Namely, let W denote a unilateral weighted shift operator acting in the spacelpA（D）, 1≤p《∞, by W zn=λnzn＋1, n≥0, with respect to the standard basis λzn＋1 n≥0. Applying the so-called ＂discrete Duhamel product＂ technique, it is proven that for any integer k ≥1 the sequence {（wi＋nk）-1｜W ｜Ei）knf}n≥0 is a basic sequence in Ei ：=span{zi＋n ：n≥0} equivalent to the basis {zi＋n}n≥0 if and only if fb（i） 6= 0. We also investigate a Banach algebra structure for the subspaces Ei, i≥0.

关键词： basis basic sequence discrete Duhamel product Banach algebra weightedshift operator

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Investigation of effects of Cocamide Diethanolamide chemical on physical and rheological properties of bituminous binder

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Frontiers of structural and Civil Engineering 2022年第1期16卷 99-116页

作者： Gizem KACAROGLU Mehmet saltan Department of Civil Engineering Suleyman Demirel UniversityIsparta 32200Turkey

In this study,bituminous binder was modified with Cocamide Diethanolamide chemical,a non-ionic surfactant,and the physical and rheological properties of modified binders were *** addition,Cocamide Diethanolamide has been used for the first time to modify bituminous binder,and this situation makes the study *** binder was modified more than once with the chemical by changing modification parameters and using certain additive ratios(1%,3%,and 5%).The effects of different modification parameters and chemical additive on modified samples were investigated with conventional bitumen tests(softening point,penetration,ductility)and superpave tests(rotational viscometer,rolling thin film oven test,pressure aging vessel,dynamic shear rheometer,bending beam rheometer).In addition,the structural characteristics of the reference binder and modified samples were examined by X-ray diffraction,Fourier Transform Infrared spectroscopy,scanning electron microscopy,and energy dispersive X-ray *** examinations showed that Cocamide Diethanolamide softens bituminous binder and lowers processing *** addition,compared to reference binder,rutting resistances of modified bituminous binders decreased with the increase of additive ***,modification with Cocamide Diethanolamide increased the resistance to fatigue cracks and thermal cracks.

关键词： Cocamide Diethanolamide bitumen modification rheology superpave tests

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Mixture Performance of Bitumen Modified with Cocamide Diethanolamide

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Journal of Wuhan University of Technology(Materials science) 2021年第5期36卷 706-713页

作者： Oznur Karadag Mehmet saltan Civil Engineering Department Suleyman Demirel UniversityIsparta 32040Turkey

Bituminous binders have been modified by using cocamide *** chemical material used in this study is used for the first-time on the purpose of modification of the *** addition to the conventional bitumen tests(penetration,softening point and ductility tests),adhesion and peeling tests(Vialit,Nicholson and California tests)were carried out on the bituminous binders which are modified with different ratios of cocamide *** to the results of the tests,the most appropriate additive ratio has been *** containing the reference bituminous binder and the bituminous binder modified with the most appropriate cocamide diethanolamide ratio were prepared using the superpave volumetric mix design method(superpaveTM).In accordance with standard method of test for resistance of compacted asphalt mixtures to moisture-induced damage(AAsHTO T 283),the moisture susceptibility of prepared samples has been *** order to observe the changes in strength due to the temperature difference,prepared samples were subjected to the freeze-thawing test in accordance with standard test method for resistance of concrete to rapid freezing and thawing(AsTM C 666).

关键词： cocamide diethanolamide superpaveTM freeze-thaw cycle moisture susceptibility adhesion

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Ethanol Extraction of Hyoscyamus niger and Hypericum calycinum Evaluated for Acaricidal Activity against Tetranychus urticae Koch （Acari： Tetranychidae）

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Journal of Food science and Engineering 2018年第1期8卷 46-54页

作者： Pervin Erdogan Errol Hassan Betul sever Yilmaz Gulcin saltan Plant Protection Central Research Institute Gayret Mah. Fatih Sultan Mehmet Bul. 66 06172 Yenimahalle Ankara 06172Turkey school of Agriculture and Food sciences 4343 Queensland 4343 Australia Ankara University Faculty of Pharmacy Emniyet Mah. 06100 Tandogan Ankara 06100 Turkey

Hyoscyamus niger L. （solanaceae） and Hypericum calycinum L. （Hypericaceae） were collected from two provinces Bursa and Ankara in Turkey during flowering stages. Extracts obtained from H. niger and H. calycinum were tested against two-spotted mite as an acaricidal pesticide. Bioassay experiments were carried out under laboratory conditions using two different methods namely, leaf disc dipping and direct leaf spraying. Two-spotted mite was reared in insectary using Phaseolus vulgaris L. （Fabaceae）. In the leaf dipping method, H. niger extract resulted in an effective adjusted mortality for larvae of 87.13% and for adults of 81.66%. For H. calycinum the adjusted mortality for larvae and adults was 77.77% and 85.97% respectively at the highest concentration. In larval stage, LCs0 values were 5.47 w/v and 3.32 w/v dipping and spraying method respectively. In addition, adult stage, it was determined that LCs0 values were 1.17 w/v and 3.56 w/v in both methods. For leaf spraying method. H. niger resulted in an adjusted showed an effect against larvae and adults mortality rate was 95% and 91% respectively. However, H. calycinum mortality percentage was 80% and 87% at 12% concentration, with LC50 values of 9.62 w/v and 2.13 w/v in dipping method. In this research apart from mortality effects on egg, reproduction was also investigated. Each concentration showed that treated females laid less eggs compared to the untreated females.

关键词： Two-spotted spider mite henbane st-John's Wort extract acaricidal effect.

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