JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)
Year:2002 | Volume:12 | Issue:43|Papers Count:9

In this work the reaction of the compounds Phosphorus Trichloride, Phosphorus Pentachloride and Phosphory1 chloride with Hydroquinon were studied and the structure of the obtained compounds: (p-HOC6H4O) pcl2, (C6H4) (Opcl4)2, (p-HOC6H4) p(O)cl2 characterized and approved by 1H-,31C-31p- NMR and IR spectroscopy and CHN elemental analysis.

The aims of this article are introduced the use of continuous and semi-continuous bioreactors and their functions at shoot multiplication and microtuberization of potato. The studies are showed that the explants having several nodes when are suspended continuously under the liquid culture medium are inhibited shoot micropropagations and microtuberization. The callus is formed on the surfaces of the explants. However, in the semicontinuous bioreactor, with the periodical pumping of the nutritional medium the explants aren’t continuously suspended unde the nutritional solution. The shoot micropropagation, the leaf growth and, the root formation are suitable. In the microtuber inductive medium, the numerous of the tubers are induced. They were sessile tubers. The dormancy of the tubers is long-term, sprouting after 3-4 months in the room conditions.

In this study alkaloids of two species of hyoscyamus plant, H. Reticulatus and H. Niger, were extracted by Maldonado - mendoza method and their antimicrobial effects on some kinds of microbes of skin, three species of staphylococcus genus (aureus, epidermidis, saprophyticus)" pseudomonas aeruginosa and candida albicans fungus, were investigated. The evaluation of diameter of the inhibitory zone produced and distribution method were used for this assessment the results showed that alkaloid extracts from various parts of vegetative and generative plant had antimicrobial effects. Reticulatus species showed stronger antimicrobial effect. Inhibitory effect on gram-positive microbes and fungus was stronger than gram-negative bacteria. In vegetative phase, root, and in generative phase flower, showed respectively the strongest antimicrobial effect.

Regarding that stress has different effects on biological processes, under stress animals and human beinges show disorders in social behavior and adjustment of HP A axis. Caffeine vegetative phase, root, and in generative phase flower, showed respectively the strongest antimicrobial effect. (C8H10N4O2) is used in some medicines as pain tranquilizer and stimulator of CNS and a wide range effects can HP A axis as well as other effects on many physiological processes in the body. In this research, effects of immobility stress and caffeine have been studied on HP A axis hormonal performance, in male rats. In this study, animals divided, in to control, experimental and sham groups. The animals of the control group were kept in conditions no caffeine and stress, and the animals of the experimental group were injected caffeine with optimum dose for five days and immobility stress for two hours. The animals of the sham group were injected with saline for five days. Plasma hormonal measurement showed a significant increase at ACTH and corticostrone levels in comparison with the control, sham and stress groups and a significant decrease in comparison with the caffeine group, that can be related to the increase of interleukin 6 production and neurotransmitters such as norepinephrine, serotonin, dopamine and acetylcholine in response to stress and caffeine.

In this study, The "Haftadgholleh" area, in east of arak, is selected. Five stratigraphic cross section are selected. Field measurements and samplin’y from lithologic units are accomplished. Microscopic thin section are made in rock samples and X. R. F method is also used to assign percentage of chemical elements. In this area, cretaceous sedimentary sequence overlies Jurassic lithologic units, with an angular disconformity and is aged from upper Barremian to cenomanian. This collection is surrunded by "Talkhab" fault, in north-east and by "Tabardeh" fault in south - west. Chemical data show relation between precence of microfacies elements and chemical conditions of sedimentary enviroment. Tconfirm this relation, lithologic units of five stratigrafic cross section are classified, by means of "STA TISTCA" software. from two points of wiew: chemical data and microfacies elements. This methode shows that there is a vary high correlation between chemical data of classified lithologic units and their microfacies elements.

The study area is a part of Central Iran and Bafq Block. The general of this block is SE-NM and its length and width are 400 and 100 km, respectively. The oldest terrains of Central Iran and the metamorphic basement make a major part of the study area. After Assyntic Orogeny, other younger formations of Infracambrian, Paleozoic and Tertiary have covered the Precambrian in some parts. Late - Proterozoic rifting has been one of the major events affecting the structural evolution of the central triangle of Central Iran and formation of ore potentials and widespread mineralizations. The evidences show that the continental rifting had never been grown up to an oceanic type. In this Ph. D. Thesis, all the different types of structures, including lineaments and central type structures have been studied using remote sensing techniques, aeromagnetic methods and field checks. This approach has been done in a Geographic Information System (GIS) to help to make the best decision. In this way, the NW trending lineaments have been considered as the main granitization lines. The other group of the lineaments with the general NE trend has been responsible for the metasomatic activities. These two groups of lineaments are called "Basement faucts". There are two major N-S and E-W trending lineaments named "Deep crustal faults". The activities of these linear structures together with central type structures have provided special paths and corridors for heat flow, magma itrusions and transmission of minerals-bearing fluids. On the other hand, the sodic metasomatism has been the major phenomenon affecting the Uranium mineralization in the study area. All the known ore deposits (in general) and DarAnjir-Khoshumi ore field (in details) have been studied for understanding and approving the relation between structural patterns and metallogeny in the area. As a result, N-S and E-W trending lineaments, their intersection points with each other and with central type structures seem to be the main places of ore indications and occurrences. Therefore, these specific points could be selected confidentially for further exploratory works in the future.

The factors which influence efficiency analysis of Desision Making Units (DMUs) in Data Envelopment Analysis (DEA) are the number of DMUs and the number of input and output factors. In this paper attempt has been made to study the stability of DEA models including Common Set of Weights (CSW), with respect to the variation of these two factors. It is shows that CSW is more stable with compare other classical models.

Finding efficient surfaces in data envelopment analysis is important in some senses. Huang and Rousseau (1997) suggested a method which is able to produce a small subset of such surfaces. The proposed method in this paper generates all proper surfaces of dimension greater or equal to one and less or equal to m+s-1. This method uses only one linear program and some pivoting operations. Is seems that this method has some advantages as compared with the existing methods.