دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Metallurgy in Ancient Iran صنایع فلزی در ایران باستان 26652 FA فرخ فرحان Journal Article 1970 01 01 After a general review of man's first encounters with metallurgy in the Iranian plateau, the first appearance of metallic objects is described briefly, emphasizing the contribution of emission spectrographic method for their analysis. The most probable evolutionary stages of the arts of metallurgy and ore smelting are mentioned subsequently. The centers of metallurgical discovery and the probable mining and smelting sites in ancient Iran are studied in the fourth part. A last section is devoted to a short review of metallurgical art in Achaemenian period https://jfe.ut.ac.ir/article_26652_b4f98cbbd34b505c936aff1d55244977.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - آب یابی ، آب رسانی ، آب یاری ، آب سنجی در ایران باستان . 26653 FA مهندس احمد حامی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26653_a6673ac46833535771ce8c9f260016d6.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Aspects of the History of Petroleum Engineering in Ancient Persia ( Synopsis) فصلی از تاریخ مهندسی نفت در ایرن باستان یا بحث کوتاهی درباره آتشی که نمیرد ... 26654 FA جلال الدین توانا Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26654_efe2ee3e7d077a5223822f9cab9c5967.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Direct Energy Conversion (IV), Thermionic. تبدیل مستقیم انرژی IV مبدل ترمینانیک(THERMIONIC CONVERTOR ) 26655 FA تقی ابتکار Journal Article 1970 01 01 The purpose of these notes is to present a partial Analysis of Thermionic converter. The basic phenomena of thermionic conversion IS divided in two classes , Emission phemomena and transport phenomena. Practically thernionic conversion is a method for converting heat directly into electricity through use of the thermionic emission. A thermionic convertor consists of a heat source, two electrodes separated by an intervening space, a heat sink and the leads connectng the electrodes to the electrical load. The electrodes are located in a highly evacuated enclosure, or in an enclosure filled with a suitable rarefied vapor. In thermodynamics terminology a thermionic converter is a heat engine operating in a cycle. There is a direct analogy between a thermionic conveter and a simple vapor cycle engine. https://jfe.ut.ac.ir/article_26655_4b134502c8c4cc109bdeee838855a277.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Cantilever Circular Plates with linear load and Radial Moment صفحه گرد طره ای تحت تاثیر بار و لنگر شعاعی خطی یکنواخت 26656 FA محمد حسین کاشانی ثابت Journal Article 1970 01 01 Several cases of loaded ciruclar plates, supported between center and periphery, have been treated previously by the author of this paper and published in the Journal of Techical Faculty or elsewhere. In this paper the case of cantilever circular plates loaded uniformly with a line load and radial moment is discussed in detail and the expressions for deflections and moments are given. It is assumed that the elastic plate is made of a material which is homogeneous and isotropic with small thickness and there is no continuity between the plate and its support. First of all the differential equation governing the problem is explained, then for this particular case of loading it is solved. The location of applied load or moment is considered to be situated either between then center and the support, or between the support and the periphery of the plates, and a complete set of solutions is furnished. Finally, the following engineering applications are given: a - Partially loaded cantilever circular plates; b - Solution of cantilever circular plates loaded uniformly with a line moment and resulted from that of a line load; c - Discussion on the problem of cantilever circular loaded plate if the continuity exists between the plate and its support. d - Propped cantilever circular plates در این مقاله تغییر شکل و تنش های صفحه های گرد طره ای که تحت تاثیر بار خطی همواری موثر بین مرکز و تکیه گاه صفحه باشد بدست آمده و نیز حالتی که صفحه تحت تاثیر لنگر شعاعی خطی ای بشدت ثابت و واقع بین مرکز صفحه و تکیه گاه و یا بین تکیه گاه و محیط باشد ، حل شده است . بعلاوه در پایان مقاله کاربرد این نوع بارگزاری ها ذکر شده است . https://jfe.ut.ac.ir/article_26656_e19635cb62fa5a21aa893bbb3d093bd5.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Etude des calculs renaux par la diffraction des rayons (X ) ( methode des poudre) بررسی سنگهای کلیوی ایران بوسیله دیفراکسیون اشعه ایکس (روش پودر) 26657 FA ناصر منیری مرتضی لاریجانی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26657_da9857e0c573bccf26f7d8e324a312a4.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Analytic Considerations of Log-Periodic Antennas بررسی تحلیل آنتنهای دوره ای لگاریتمی 26658 FA حسن مرشد Journal Article 1970 01 01 A simple theory of infinite, uniform, periodic structres is adapted here to finite log - periodic devices. This theory, with the aid of /k diagrams, provides a great deal of insight into the operation of frequenecy - independent antennas. While the : theory does not give detailed information about the radiation patterns of the antennas, it does allow the angle of beam maximum to be calculated and gives information concerning possible sidelobes and backlobes. The advantages of this theory are its simplicity, and the insight it provides into frequency -Indepen, dent antenna design generally. In addition, a number of antenna characteristics can be deduced from /k diagrams. https://jfe.ut.ac.ir/article_26658_42d2e5f9845ad80ee91547a8ee7b19ba.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Temperaturverteilung in kunststoflisolierten Dreileiterkabeln waehrend eines kurzchlusses تعیین توزیع درجه حرارت در عایق کابلهای سه فازی در حین عبور جریان اتصال کوتاه (قسمت دوم) 26659 FA امیر منصور رمیری Journal Article 1970 01 01 Ausgehend von der Temperatur verteilung eines Einleiterkabels mit excentrisch verlagertem Innen leiter wird die Temperatur verteilung in einem Dreileiterkabel bestimmt. Es wird gezeigt, dass die Temperatur im kabelzwickel bis zur Begrenzung durch den Leiter teilkreis konstant ist. https://jfe.ut.ac.ir/article_26659_ba1d602836e23f09eb99a44870a10b55.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - کاربرد حسابگر عددی (کامپیوتر) در حفاری 26660 FA رحمان صمد زادگان Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26660_78e76e3b386b02322f3ef0d8071b8753.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Polarographie des derives nitres Aromatiques. پولاروگرافی ترکیبات نیتره حلقوی 26661 FA نورالدین حبیبی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26661_fe71535d2287f22818fec74a6963b556.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Calcul de 1a caracteristique Mecanique des poutres a l'inertie variable pour les etudes des cadres. محاسبات مشخصات لازم برای حل تابها باتیرهای اینرسی متغییر 26662 FA ابراهیم چینی فروش Journal Article 1970 01 01 Dans cet article nous avons traite Ie calcul des constantes mecanique ou des coefficients de la souplesse,de la rigidite, de la transmisson et des moments d'encastrement parfait et aussi les angles de la rotation aux droites des appuis pour augmenter l'inertie de la section afin de pouvoir mieux resister aux effets dus aux forces horizontales dans les grandes ossatures des batiments , Pour Ie developpement de cette etude, nous avons utilise des equations bien connues de l'energie de deformation. Nous avons considere deux types de poutres dans notre etude, soit- disant , des poutres symetriques et des poutres dissymetriques. A la fin nous avons donne des tableaux pour l'utilisation pratique des resul » tats obtenus https://jfe.ut.ac.ir/article_26662_7476af2ec7f37e1e70de90290e56fb59.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 ISOPRENE La Matiere premiere du caoutchouc synthetique ایزوپرن ماده اولیه کائوچوی مصنوعی 26663 FA مهدی – سادات منصوری Journal Article 1970 01 01 Les recherhes pour obtenir Ie caoutchouc synthetique remontent a1860. A partir de 1950 le GR-S et d'autres produits speciaux etaient consommesen quantites plus eleves que le caoutchouc naturel. Pourtant la recherche de nouveaux produits se poursuivait, parce que l'industrie avait besoin d'un succedane possedant toutes les proprietes desirables du caoutchouc naturel, C'est ainsi q'un produit remarquable, le cis polyisoprene- 1,4 fit son appa rition . Le cis polyisoprene - 1,4 ne se distingue pas du produit naturel, sa formule et sa structure etant en fait identiques. La decouverte des methodes de polymerisation stereospecifique par Ziegler et Natta, a pose le probleme de la production economique de l'isoprene, En 1960 la Scientific Design Company, en collaboration avec la Goodyear, apres une etude approfondie de tous les precedes de synthese de Pisoprene du point de vue rendement, operation chimique, appareillage et prix de revient reussirent a developper une nouvelle methode pour la fabrication de l'isoprene, Ce precede, utilise oomme matiere de depart le propene, produit abondant en petrochimie. I1 permet pour la permiere fois d'obtenir un polyisoprene a un prix inferieur acelui du caoutchouc naturel, Le propylene est dimerise en methyl-c pentene-r que l'on isomerise afin de deplacer la double liaison et transforme en isoprene et methane par craquage. https://jfe.ut.ac.ir/article_26663_72379ab095cdf0f0d00c4dd18e0bffd7.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Economic and Social Aspects of the Earthquake Problem زلزله از نظر اقتصادی و اجتماعی 26664 FA همایون حقیقی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26664_d133f6e13ae7b796abc688c6756330dc.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Composes non stoechiometrique des oxydes ternaires Groupe des Bronzes اکسیدهای سه تایی – برنز Les Oxydes Ternaires- BRONZE 26665 FA هورفر Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26665_04cfedd2a031deba2f3ff0f91494234d.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 CARBONATITES کربناتیت ها 26666 FA مهرانگیز پذیرنده Journal Article 1970 01 01 The term carbonatite is defined, and it is explained that carbonatites are not of sedimentary origin even though they may be composed of more than 50% carbonate minerals. The mineralogy and petrography of carbonatites are then briefly described. Next, the relationship of carbonatites with other igneous rocks such as kimberlite, ijolite, essexite, nepheline syenite and alkali syenite are discussed. It is noted that carbonatites have chronological, spatial, chemical, and tectonic relationships with kimberlite and alkaline rocks. Fenetization is then described as the alkali metasomatism of the country rocks. The field occurrence and distribution of carbonatites are summarized. It is explained that they commonly occur in continental shield and platform areas which have experinced tensional stresses and differential up - and - down move -ments . Four previously proposed theories are then given for the origin of carbonatites: 1 ) mobilization of limestones and marbles, 2 ) alkalic metasomatism 3) hyd , rothermal replacement of alkali igneous rocks and 4) magmatic origin. There is more favourable evidence (including experimental results) for the theory of magmatic origin. The economic value of different elements and minerals m carbonatites (apatite, niobium, barite rare earths) is briefly discussed. The petrographical, mineralogical, and geological information useful for the discovery of carbonatites (Deans, 1967 ) is briefly summarized. So far, no definite occurrence of carbonatities has been reported in Iran, but favourable areas and possible regions for their occurrence are mentioned. https://jfe.ut.ac.ir/article_26666_afee52f9a3dffa3ab2ea5fe0120d7030.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 THE PRINCIPLE OF DEAD STOP END POINT TITRATIONS اصول تیتراسیون با استفاده از نقطه انتهایی صفر 26667 FA الیده سرابی Journal Article 1970 01 01 A Dead Stop End Point titration is a type of amperometric titration which makes use of two identical electrodes (usually made of Platinum) with a small potential difference between them. The first titration of this type was carried out by Salomon in 1897, but the method only came in general use after it was rediscovered in 1926 by Foulk and Bawden. During these titrations the current is measured as a function of the degree of neutralization. At the end point the current is zero, and depending on the substances present in the solution, the current is sometimes also zero before or after the equivalence point. The proper explanation of these titration curves has long been a major difficulty. Only in the last two decades it was realized that there is a relation with electrode kinetics. A current can only flow if both components of a reversible oxidation - reduction couple are present in the solution in which the electrodes are immersed. In this paper the polarization curves of reversible and irreversible redox couples are briefly discussed. After that it is demonstrated how the different types of titration curves can be derived from these polarization curves. https://jfe.ut.ac.ir/article_26667_1697818f45344e4009fe5d121f3a13d7.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Protection par inhibiteurs de corrosion خلاصه مقاله حفاظت از خوردگی توسط کند کننده ها ( ضد رنگها ) 26668 FA فاطمه – پاشایی فرد مقدم Journal Article 1970 01 01 Un inhibiteur de corrosion est une substance qui, lorsqu'elle est ajoutee en faible concentration a un milieu corrodant, provoque une diminution sensible de l'action corrodante. Les inhibiteurs de corrosion agissent en creant une barriere entre le metal et le reactif, Ils viennent se fixer a la surface du metal sous une forme qui depend de leur nature. I - Formation d'un produit insoluble. - La precipitation d'un produit insoluble peut se faire sur les anodes des piles locales, sur les cathodes ou a la fois sur les cathodes. 2 - Formation d'un film d'oxyde sur le metal. - Les chromates et les nitrites, par exemple, deterrninent sur le fer ou les acier la formation d'un film d'oxyde. Les inhibiteurs oxydants agissent par elevation du potentiel du metal dans les domaines de passivation ( protection anodique ). 3 - Adsorption - C'est le mode d'action essentiel des inhibiteurs organiques. II est vraisemblable que l'action inhibitrice des composes organiques est due a la formation d'une couche monomoleculaire ala surface du metal. Elle peut presenter caractere anodique, cathodique ou mixte. Pour expliquer le mecanisme de l'inhibition on a le choix entre: I - Le blocage de la surface metallique par formation d'un film. 2 - La chimisorption qui suit l'adsorption purement physique. 3 - L' empechement de la dissolution du metal par attaque directe d'acide en augmentant la surtension de I'hydrogene ala surface metallique, 4 - Modification de la polarisation anodique et cathodique. https://jfe.ut.ac.ir/article_26668_7997b01baa1b56523a125808d4022309.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 Man- Materials Midden ( Environment) مردم (انسان ) ماده و محیط MAN – METERIAL – MIDDEN ( ENVIRONMENT) 26669 FA پرفسور اتمر هرمز پازوش Journal Article 1970 01 01 The conjunction of millions of coincidences over millions of years with the almost infinite odds of their all fitting together in the appointed sequence has brought forth living organisms, plants, animals, and man! These happenstances have resulted in building up to an apex of biologe-people-you and me! This earth may well be unique in time or space, limitless as re both. Where these mathematical odds have been upset, life has developed and evolved into reasoning, motivated beings which have benn able to control and use for their own purposes all other forms 'Of life and materials. Recently, Went, in The American Scientist, in a fascinating evaluation of man's dominance. demonstrated that man's physical size has evolved from natural laws to an optimum under earth's conditions. His arguments are intriguing and convincing. Going back to axioms: - there are two types of properties - mechanical and molecular. Reynolds' Criterion shows that when mechanical properties of fluids -control fluid flows according to one law, when, molecular properties control the flow is quite different. A similar critical condition also based on dimernions -fixes controls for many other phenomena of matter and even of the living of animals, since mechanical forces of mass, inertia. etc. exert their effects to a quite different extent than mole- cular properties, as diffusion, viscosity, cohesion or attraction and visecosity. Weight increases with the third power of length, while the molecular forces attracting bodies in contact with each other increase approximatelyl as only the first power. A 1ammo cube with a flat side might be just supported by adhering to another flar surface; molecular forces of attraction just balance mechanical forces ofseparation . If larger' the cube falls; and if the cube has edges 10 times as long, gravity is 50 times as strong. while if the edges are onetenth as long, adhesioe is 50 times as strong. The criterion of the control by molecular forces or by mechanical forces for many other phenomena are similar and as important as in Hydraulics. Criteria like Reynolds' need to be considered in many fields. This can be appreciated qualitively; e. g. dust particles stiak to walls and ceilings, even though they have weight. This mechanical force of gravity is very small compared to the molecular force of adhe , sion, which is overcome only by a much more powerful mechanical force, that of a vacuum c1ener. Also, a small fly can walk on the ceiling; its force of adhesion is greater than its weight. Very large flies cannot; their size on the other side of the critical. Of more interest is a similar criterion for the method of distribution of oxygen. water. and food in a living organism. Single cells distribute food by molecular diffusion. This is extremely fast in single cells which, for example, complete by diffusion all the functions of a generation of life in 20 minutes. Insects, as ants, are at akout the critical size: and all mass transport inside their bodies is by diffusion. Man's size at 10 to 50 million times the ant's is far above the critical: and diffusion would take a lifetime bring sustenance from his stomach to his feet and hands. and would energize only a few steps in his lifetime. Animals above the critical size have developed many and ingenious pumps for gas and liquids. to distribute mechanically the fluids which support life. Went carries this idea further into the mechanical domain. showing why a small animal could not use fire - the flame of which has a critical size, could not have an information storage system which would allow the development and inheritance of a culture. could develop too little energy to utilize tools or weapons effectively, would have too small a nunber of brain cells: while an animal much larger than a man https://jfe.ut.ac.ir/article_26669_918c2e75bec63ef2f2b29901c2953ecd.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 DETERMINATION DES FORCES NODALES DANS LE CALCUL A RUPTURE DES DALLES تعیین مقدار نیروهای گرهی در محاسبه دالها به گسیختگی 26670 FA مهدی قالیبافیان Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26670_601937c9ec42bb854a2d58c3f58b432c.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - بقیه مقاله آقای دکتر حقیقی راجع به زلزله 26671 FA حقیقی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26671_517752821cafa6e218a7e50143276ce3.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - از رویدادهای علمی و صنعتی جهان 26672 FA محمد علی رحمتی Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26672_b02fb776264afc7b122c4aacd1eb4d35.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - کتب و مجلاتی که در ماههای فروردین ، اردیبهشت و خرداد بهکتابخانه دانشکده فنی هدیه شده 26673 FA Unknown Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26673_78c27aafd2a82212ebca5835778e8319.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - چندین یادآوری درباره شیوه نگارش 26674 FA Unknown Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26674_d5f92afd72b51ff19fdd48b87d520171.pdf

دانشکده فنی نشریه دانشکده فنی 0803-1026 20 0 1971 09 23 - واژه هایی چند به زبانهای مختلف 26675 FA Unknown Journal Article 1970 01 01 - https://jfe.ut.ac.ir/article_26675_a1dd1e0d58bc1c6c1dd9e0eccdc7457b.pdf