Tikrit Journal of Pure Science最新文献_第9页

Global Conharmonic Concept Type Nearly Kahler Manifold 全局共谐概念型近Kahler流形

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i4.1233

Ali A. Shihab

{"title":"Global Conharmonic Concept Type Nearly Kahler Manifold","authors":"Ali A. Shihab","doi":"10.25130/tjps.v20i4.1233","DOIUrl":"https://doi.org/10.25130/tjps.v20i4.1233","url":null,"abstract":"The concept of permanence conharmonic type Nearly Kahler manifold conditions are obtained when the Nearly Kahler manifold is a manifold conharmonic constant type. Proved that the local conharmonic constancy of type Nearly Kahler manifold is equivalent to its global conharmonic constancy of type. And also proved that the Nearly Kahler manifold conharmonic constant type is a manifold of constant scalar curvature.The notion of constancy of type Nearly Kahler manifolds was introduced A.Greem ([1], [2], [3]) and has proved very useful in the study of the geometry of nearly kahler manifolds. Next nearly kahler manifolds of constant type considered various mathematicians (see. [1], [3], [4], [5], [6], [7]). Comprehensive description of Nearly Kahler manifolds of constant type was obtained V.F.Kirichenko [6]. In [6] it is shown that Nearly Kahler manifold of pointwise constant type description by the identity , where B - a function on Nearly Kahler manifold, . Wherein local constancy of type Nearly Kahler manifold is equivalent to the local constancy of its type. Moreover, the covariant constancy of structure tensors of the first and second kind it follows immediately that, the constancy of type at only one point Nearly Kahler space implies global consistency of its type.","PeriodicalId":23142,"journal":{"name":"Tikrit Journal of Pure Science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75207735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ON SPECTRA OF SOME TENSORS OF SIX-DIMENSINAL KÄHLERIAN AND NEARLY-KÄHLERIAN SUBMANIFOLDS OF CAYLEY ALGEBRA cayley代数的六维kÄhlerian和nearly-kÄhlerian子流形的张量谱

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i4.1227

Ali A. Shihab, Mihail Banaru

引用次数: 0

Study of Thioredoxin Isolated from Human Blood Serum 从人血清中分离硫氧还蛋白的研究

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i3.1190

Luay A. Al-Helaly, Amera A. Hamdon

引用次数: 0

On strongly faintly M-θ-i-continuous functions in Bi-Supra Topological Space 双上拓扑空间中强弱M-θ-i连续函数

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i4.1230

Taha H. Jasim, Reem O. Rasheed

引用次数: 0

Study of the thermal, mechanical and costrictional properties to some Foreign dental amalgams using in Iraq 国外一些牙科用汞合金在伊拉克的热、力学和收缩性能研究

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i3.1200

Abdul Kareem D.A, Rajaa S.N., HALEEMAH S.M.

{"title":"Study of the thermal, mechanical and costrictional properties to some Foreign dental amalgams using in Iraq","authors":"Abdul Kareem D.A, Rajaa S.N., HALEEMAH S.M.","doi":"10.25130/tjps.v20i3.1200","DOIUrl":"https://doi.org/10.25130/tjps.v20i3.1200","url":null,"abstract":"In this paper, the preparation of five samples of amalgam alloy used for the restoration of teeth has been done using the amalgamation device for mixing alloys with mercury. The alloys included four high copper amalgams which are (SDI, Septalloy NG 50, YDA alloy, TG alloy) and the percentage of copper (28, 22.7 , 25, 24) % respectively, which are ready fillings. While the fifth alloy (Septalloy NG70) is for low copper amalgam with Copper ratio of 12.7%. The X-ray diffraction has been tested to study the structural properties of these samples and found for the four high-copper alloys increment in the intensity for the diffraction values of the two phases Ɛ - Cu3Sn, ƞ - Cu6Sn5 with the disappearance of the phase γ2 - Sn7Hg which decreases the intensity of this phase with copper increment, while in the low- copper alloy it shows an increase in the peaks representing the phases Ɛ - Cu3Sn, ƞ - Cu6Sn5 with an increasing proportion of copper in the amalgam, as the relationship is positive between copper increment and the tops increment of these two phases, and the relationship is inverse between the copper ratio increment in amalgams and phase γ2 where phase reacts with Eutects silver - copper component phases γ1 - Ag2Hg3, ƞ - Cu6Sn5. Also the mechanical and thermal properties has been studied for each one of five groups of amalgam alloy like compressive strength , micro hardness , thermal conductivity","PeriodicalId":23142,"journal":{"name":"Tikrit Journal of Pure Science","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80199366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study the impact of crude oil on some physiological activities of Oscillatoria splendida 研究了原油对脾振子某些生理活动的影响

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i3.1187

Hammed S. Khamees, Ali Muayad Sultan, Ayman A. Saleem

{"title":"Study the impact of crude oil on some physiological activities of Oscillatoria splendida","authors":"Hammed S. Khamees, Ali Muayad Sultan, Ayman A. Saleem","doi":"10.25130/tjps.v20i3.1187","DOIUrl":"https://doi.org/10.25130/tjps.v20i3.1187","url":null,"abstract":"The effect of different concentration of crude oil had been examined upon Oscillatoria splendida, it was depended upon measuring Growth as optical density, Chlorophyll, Phycocyanin and Protein concentration as an Physiological activities indicator of crude oil effects on Oscillatoria splendida, in addition to morphological changes. The growth optical density in the control sample in the day 30 was (0. 34), while it was (0.148) & (0.08) at 0.25% & 0.5% of crude oil respectively, 41% of chlorophyll concentration has been reduced under effect of 0.25% of crude oil, and reduction 63% of chlorophyll concentration with treatment 0.5%. Protein was reduced 45% at 0.25%, and 82% at 0.5% of crude oil. It was observed reduction growth, chlorophyll, phycocyanin as well as the protein concentration to a minimum under the influence of crude oil treatment 1% and 2% respectively. As well as the absorption spectrum infrared by FTIR show there were absence of methyl group CH3 at (2950 cm-1), (2870 cm-1) and other bundle such as (2300) cm-1, (1500) cm-1, and this is could due to consumed by this species. With appearance a new compounds at 2400 cm-1 and 800 cm-1. Morphologically Observed that the cells within the filament appearance clearly.","PeriodicalId":23142,"journal":{"name":"Tikrit Journal of Pure Science","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86526660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Geomorphological Study for Selective Sections of Injana Formation/ Northern Iraq 伊拉克北部Injana组精选剖面的地貌研究

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i5.1249

引用次数: 0

Solar Radiation Pressure Effects on the Orbital Elements of Artificial Earth Satellite 太阳辐射压力对人造地球卫星轨道要素的影响

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i4.1216

Ahmed K. Izzet

引用次数: 0

Suitability of Injana Sandstone rocks for building Stone and Rail way ballast stone ̸ Ketol area ̸ Sulymania Governorate 印加那砂岩作为建筑石材和铁路压载石的适宜性

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i5.1246

引用次数: 0

Evaluation of the Suitability of Mukdadiya Formation Rocks for Using in Concrete / Northern Hemrin Anticline 穆克达迪亚组岩石在混凝土/北海姆林背斜中的适用性评价

Tikrit Journal of Pure Science Pub Date : 2023-02-10 DOI: 10.25130/tjps.v20i3.1195

Amera Ismail Hussain, Maath Shukrie Sarhan

{"title":"Evaluation of the Suitability of Mukdadiya Formation Rocks for Using in Concrete / Northern Hemrin Anticline","authors":"Amera Ismail Hussain, Maath Shukrie Sarhan","doi":"10.25130/tjps.v20i3.1195","DOIUrl":"https://doi.org/10.25130/tjps.v20i3.1195","url":null,"abstract":"The aim of this work is to evaluate the suitability of gravely sediments of the Mukdadiya formation (Lower Pliocene) in the northern Hemrin anticline on Tikrit – Kirkuk road / north-eastern of Iraq for concrete uses , and compared with the standard specifications (Iraqi, American and British) samples have been collected from four different stations by two samples for each station for the purpose of conducting various geotechnical tests including physical tests , strength and durability as well as chemical tests) Results of geotechnical evaluation for physical tests show that the grain size distribution of the 1st and 2nd stations suitable for uses to concrete for classes (40) class except 3rd. and 4th station , according to[1] , the results of Flakiness Index and elongation Index shows that the samples of four stations did not exceed the permitted border According to the British Standard and suitable to be provided by the requirements for the use of concrete . \u0000The strength tests also showed the results of (AIV) shows it's don’t exceed than 9.95%) for all sample in the study area , and for compressive strength that taken from point load test shows that all stations classified the aggregate strength (very strong - extremely strong) according to[3] . \u0000Durability geotechnical tests (Loss Angeles) results shows the percentage of weight loss for the four samples are not exceed the defined value 35% , so it is suitable for use for concrete and sub-base coarse aggregate and soundness test results shows suitability of all samples to use in concrete works . \u0000The chemical analysis shows suitability according to the standards . \u0000Overall, the study showing suitability for all tests with the requirements of the aggregate that are used in concrete except simple deviation in the grain grading in the third and fourth station .","PeriodicalId":23142,"journal":{"name":"Tikrit Journal of Pure Science","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90048750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0