ISSN: 1812-125X

Current Issue
Volume 28, Issue 1

Volume 28, Issue 1, Spring 2019, Page 1-345


Sub-Lethal Effect of Four Plant Extracts on Growth And Reproductive Parameters of Culex pipines molestus Forskal (Diptera: Culicidae)

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 1-8

The ethanol extracts of leaves Alianthus altissima, Carrisa grandiflora, fruits of Citrullus colocynthis and aerial parts of Ruta graveolens was tested against fourth instar larvae of the mosquito, Culex pipines molestua Forskal through sublethal doses at the concentrations 5, 10, 15 and 20 ppm. The extracts of C. grandiflora, A. altissima and R. graveolens were prolonged IV-P time with 9.7, 10.3 and 12.8 days at 20 ppm. Whereas, the period shorted to 4.3 days for C. colocynthis in comparison with control 7.3 days. All the plant extracts extended pupal period with significant time, but not more 3.1 days, and 2.1 days for untreated pupae. The reproductive parameters as egg laying hatchability, fecunidity, fertility and sterility percent were showed significant values of emerged adults treated with the plant extracts at IV larval instar.
 

Antimicrobial Activity of Some Trichoderma spp. against Different Kinds of Fungal and Bacterial Isolates

Omar Al-Obaidy

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 9-16

Two types of the fungus Trichoderma were chosen, these are T.viride and T.harzianum. The activity of these fungi were tested against different kinds of plant and human pathogenic fungi. After screening , the fungus T.harzianum was selected because it showed highest efficiency in its antagonistic activity than T.viride. It was also tested against other kinds of the plant and human pathogenic fungi and the fungus Macrophomina phaseolina was the most sensitive toward T.harzianum. In addition, the active compound from the fungus T.harzianum was extracted then tested against different types of pathogenic fungi and different types of pathogenic Gram positive and negative bacteria which showed different values of antagonistic activity. Bacillus subtilis was the most sensitive to the extract. Thus, many tests could be done to ensure the safety of this fungus (and its extract) and that is not toxic and to ensure its antagonistic activity toward the studied microbes inside the living body (In-Vivo), and then it could be used as good alternative to the chemicals that have side effects.

In Silico Structural Analysis of The Cell Division Protein, FtsZ: Screening Natural Products for Inhibitors

mohammed saeed

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 17-36

FtsZ is a tubulin homolog in bacteria. It forms a Z-ring to recruit other proteins in the process of cell division through its GTPase activity. Amino acid sequence of FtsZ was obtained from uniprot database and used for the determination of primary and secondary structures by several online tools. Homology modeling was carried out by SWISS-MODEL and PHYRE2. The models were evaluated and quality assessment indicated that the model produced by SWISS-MODEL had better quality than PHYRE2. Therefore, SWISS-MODEL was used in docking twenty five natural products by AutoDock 4.2.6. Dunnianol, pebrellin, dalbinol and hederagenin had docking energy higher than the previously used berberine and sanguinarine. Analogs of Dunnianol were sketched by ChemBioOffice Ultra 11.0 and docked. The analogs 2,4 and 7 had higher docking energy than the original compound. These natural products and the analogs obtained in this study could serve as possible inhibitors of this cell division protein, a new target in the development of new antimicrobials.
 

iD-Sets and Associated Separation Axioms

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 37-46

In this paper, we introduce iD-sets which are depends on i-open sets [12]. Where we discussed the relationship between this sets and other types of sets, In addition, we discussed the relationship between the separation axioms for this type of sets with one hand and their relationship with i-separation axioms [1] on the other hand. Also we introduce i-symmetric typological space and the weakly -space. The most important results that we have obtained i-symmetric topological space which topologically extended for i-open sets will be -space if and only if it is - Space.

Automatic Continuity of Some Types of Double Derivations on Semisimple Banach Algebras

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 62-70

         Following Villena in [9] and Mohammed and Ali in [4],  we introduce
partially defined ( ) - c - double derivation and generalized ( ) - c -
double derivation  on a semisimple complex Banach algebra  whose  domain
is not necessarily closed,  essential ideal and we prove that they are closable.
In particular, we show that every ( )- c -double derivation and generalized
( ) - c - double derivation  defined  on  any  nonzero  ideal  of  a prime  
C * -  algebra are continuous.
Keywords:  automatic continuity ,    double derivation ,   ultraprimness,
                          sliding hump sequence.

MHD Stagnation-Point Flow of Non-Newtonian Fluid and Heat Transfer over Stretching/Shrinking Sheet in a Porous Medium

Ala'a Hammodat; Anas Basheer

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 71-82

In this work, we study the stagnation point flow of Casson fluid  and
heat transfer phenomena in presence of thermal radiation  and  magnetic
field. We used the suitable similarity transformation to reduce  governing
partial differential equations into ordinary differential equations,   these
equations are solved numerically using Rang-Kutta method. Effects of non-dimensional parameters on velocity, temperature are discussed and presented through graphs as well as coefficient of skin friction and local Nusselt numbers is investigated stretching/shrinking cases.  

On Almost WJCP-Injective Rings

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 83-89

Let R be a ring. The ring  is called right almost WJCP-injective. If for any , (right non singular) there exists a left ideal  of  such that . In this paper, we give some characterization and properties of almost WJCP-injective rings, which are proper generalization of JCP-injective ring and almost AP-injective ring. Then, we study the regularity of the right almost WJCP-injective ring and some important results which are known for the right JCP-injective rings to be hold for the right almost WJCP-injective rings.

The Relation Between the Alternating Group and Standard Row Young’s Diagrams

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 90-105

This study tackles the relationship between the alternating group 14An">  and young’sdiagrams concerning standard rows. The study has been divided into two stages… First, even permutations have been found depending on the conception of partition 14خ¼">  through formulating an algorithm for this purpose. Secondly, the relationship between the cycle length and partition 14خ¼">  has been found.
14د¨ .1">  Introduction:
Let 14n">  be a non-negative integer, a composition 14 خ¼">  of 14n">  is a sequence 14 خ¼=خ¼1 ,خ¼2, ⋯خ¼r "> of non-negative integers such that 14 خ¼=j=1rخ¼j =n"> , [5]. For example, if 14n=4"> , the following sequences are compositions:
144, 3,1, 2,2, 1,3,2,1,1,1,2,1,1,1,2,1,1,1,1"> .

Study of Stability of Non-linear Model with Hyperbolic Secant Function

JOURNAL OF EDUCATION AND SCIENCE, Volume 28, Issue 1, Pages 106-120

We study a new definition of a non-linear model of time series with hyperbolic secant function in a discrete time. The suggested model consist of two parts the first part is (linear) and the second part is (non-linear) which contains the hyperbolic secant function. We approximate this model to be linear by using the local linearization technique. We find the non-zero unique singular point that satisfies the non-linear variation equation, also stability of the non-zero unique singular point and the limit cycle if it exists of the suggested model.