Заглавие:Coherent control of intramolecular processes Part II: Adiabatic States Approach to the Coherent Control
Автор:Koprinkov, Ivan Georgiev; Копринков, Иван ГеоргиевДата:1995Резюме:The experimental results on polarization control of predissociation of the iodine molecules in terms of adiabatic states of the combined “atom ’’-field system is considered. The general conditions for experimental realizations of the coherent control have been specified.Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Coherent control of intramolecular processes Part I: Polarization Control on Predissociation of Iodine Molecule under On-Resonance Rovibronic Excitation
Автор:Koprinkov, Ivan Georgiev; Копринков, Иван Георгиев; Pique, J. P.; Пик, Ж. П.; Naylor, G. A.; Нейлор, А. Г.Дата:1995Резюме:The coherent control method for manipulation of predissociation probability of iodine molecules is discussed and test experimentally using on-resonance rovibronic excitation. The predissociation rate has been controlled measuring life-time of the predissociattve state versus degree of elliptical polarization of the exciting laser emission.Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Cavity waveguide-output lasers. mode locking - picosecond operation
Автор:Koprinkov, Ivan Georgiev; Копринков, Иван Георгиев; Ilev, Ilko K.; Илев, Илко К.Дата:1995Резюме:The Cavity Waveguide-Output Laser is a new laser device that provides a direct and active coupling between the laser cavity standing wave field and a waveguide optical structure (optical fibber, taper, etc.) using its polished optical face as a cavity output coupling mirror. This laser system offers a new method for active paraxial launching ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Аномално поведение на втората константа на магнитна анизотропия с еднойонен произход във функция на намагнитването и температурата
Автор:Милев, Йонко; Millev, Yonko; Фенле, Манфред; Fahnle, ManfredДата:1995Резюме:An exhaustive study is carried out for the determination of the possible types of variation of the second single-ion anisotropy constant K2. Three types are found and quantified, two of which are anomalous and unknown by now. While they both exhibit a nonmonotonic variation with a local extremum between zero and the Curie temperature, one ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:New fiber-optic autocollimation method for determination and control of physical qualities
Автор:Ilev, Ilko K.; Илев, Илко К.Дата:1995Резюме:A new and simple fiber-optic autokollimation method for determination and control of various physical quantities is presented. A basic optical element in the method is a single-mode optical fiber. Because of its micron core dimentions it serves simultaneously as a point laser source, object for projecting and receiver that is higly sensitive ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Позиционно - чувствителен фотодетектор на основата на хидрогенезиран аморфен силиций
Автор:Съева, Дочка; Sueva, Dochka; Тонева, Атанаска; Toneva, AtanaskaДата:1995Резюме:The possibility for fabrication of the position sensitive photodetector (PSP) on the base of the updoped hydrogenated amorphous silicon (a-Si:H) thin films is studied. The amorphous silicon thin films are deposited by homogeneous chemical vapor deposition method. The thin films are thickness varieds from 0,5 to 1 pm.
PSP employ a Schottky-type ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Трибологията - съвременна методология на интеграционните процеси
Автор:Манолов, Нягол Точев; Manolov, Nyagol TochevДата:1995Резюме:The accent in the present work falls on the proposed fundamental (ontological) model of the functional entity. It has been proved that the appearance of tribology as a science of contact essence in nature, society and technology has enriched the fundamental model of the universe with the third originБиблиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Разработване на учебни курсове по темпус договор “Обучение и практика по приложна механика и теория на системите с компютърно ориентирани приложения”
Автор:Лилов, Любомир Кръстев; Lilov, Liubomir Krastev; Чернева-Попова, Здравка Тодорова; Tchemeva, Zdravka Todorova; Бъчваров, Стефан Николов; Butchvarov, Stefan Nikolov; Банов, Стефан Борисов; Banov, Stefan Borisov; Николов, Светослав Славов; Nikolov, Svetoslav SlavovДата:1995Резюме:The development of new course is given: “System Theory and Control of Movement”, “Applied Mechanics”, “Vibrations, Vibroprotection and Noiseprotection of Machines ”, “System Identification ”, “Application of Computer Technics in Mechanics Curricula, other activities are described in connection with the aim of the contract — improvement of ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Безрезонансни трептения с течно и сухо триене
Автор:Петров, Тодор; Petrov, TodorДата:1995Резюме:There are investigated in the paper disturbed oscillations with the dissipative forces of wet and dry friction origin, in the resulting motion exists no the phenomenon “resonance ”.
The disturbed oscillations amplitude does not depend on the disturbed frequency and the amplitude is a constant during the time when the last frequency ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Оценка на трибологичното поведение на смазочни материали на фирма “Дуралюб” - България
Автор:Янков, Александър Евгениев; Yankov, Alexander Evgeniev; Кавалджиев, Станчо Йорданов; Kavaldjiev, Stancho JordanovДата:1995Резюме:The paper deals with particular results from tribological parameters tests of lubrication products of the company Duralube—Bulgaria”. Small quantities of these products added to lubricant oils decrease briskly friction losses and wear in contact joints. Laboratory analyses carried out through original method and test equipment show quite ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Analytical expressions for the stress distribution in a 4-node isoparametric finite element
Автор:Tenchev, Rosen Tenchev; Тенчев, Росен ТенчевДата:1995Резюме:For the general displacement isoparametric finite elements the displacement field is approximated by a polynom. Since the strains are first derivatives of the displacements and FE post-processors usually use the nodal stress values and polynomial shape function to approximate the stress field it is a common mistake made by FE users to as ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:The stress sampling points and the convergence of the h — adaptive finite element method
Автор:Tenchev, Rosen Tenchev; Тенчев, Росен ТенчевДата:1995Резюме:The nodal stresses in a finite element may be calculated in two ways: (a) directly at the nodes; (b) by extrapolation from the stresses at the Gauss points. It will be shown by means of numerical examples, involving plane 8-node isoparametric elements, that the convergence of stresses in areas of stress concentration is superior -when using ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Якостен критерий за материали с различно съпротивление на опън и натиск
Автор:Стойчев, Георги Борисов; Stoychev, Georgy Borisov; Тущев, Камен Николов; Tushtev, Kamen NikolovДата:1995Резюме:A new failure criterion for materials with different strength in tension and compression is proposed. Experiments with tube specimens made from different types of cast iron with tensile strength 100, 150 and 200 MPa and biaxial stress state -^=co, 1, 0.5, 0, -2, -oo and pure forstonwere carried out. The proposed criterion is in good agreement ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Определяне на статичните и динамичните еластични и демпфиращи характеристики на реални металогумени съединители
Автор:Полихронов, Георги Тодоров; Polihronov, Georgi TodorovДата:1995Резюме:In paper a methodic for determination of static and dynamical stiffness char¬acteristics of elastic clutches is proposed. It is tested for determination of real metal-rubber clutches for tram use characteristics.
From experimental investigations was established that this methodic can be used for all kinds elastic clutches.Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Специфична деформационна работа при кос удар с конус по безкрайна мембрана
Автор:Карапетрова, София Василева; Karapetrova, Sophia VasilevaДата:1995Резюме:The distribution of the specific strain work is established for the problem of an oblique impact with a cone on an infinite membrane (for the case where the transverse wave is propagated in the plane area only); this work being general, for the change in shape, and for that in volume. The distribution has been built for both areas of the ...Библиотека:
Заглавие:Self-exited oscilllations within mixed friction regimes when reading the hydrodynamic theory of lubrication
Автор:Butchvarov, Stefan Nikolov; Бъчваров, Стефан Николов; Karapetkov, Stanimir Mihailov; Карапетков, Стефан МихаиловДата:1995Резюме:Abstract: This paper deals with a dynamics model with two degrees of freedom on the basis of which a profound analysis is made about initiation and behavior of the self-exited oscillation. At the same time reads the hydrodynamics action of lubrication and dry friction with its dynamic performance. The different equations are solved in ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Оценка на ергономичните качества на работното място на мотокар универсален високоповдигач с полуеластично окачване на силовия агрегат
Автор:Тодоров, Михаил Дамянов; Todorov, Michael Damyanov; Генов, Юлиян Асенов; Genov, Joulian AsenovДата:1995Резюме:This paper is a continuation of the paper / //. In [ 11 is presented one mathematical model of a counterbalanced engine-driven fork-lift truck with half-elastic suspension of an engine and a hydrodynamic transmitter. This scheme is traditional for small trucks and it provides their optima! lengths. The engine with hydrotransmitter is directly ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Алгоритъм и числена процедура за идентификация на механичните характеристики на линейни динамични системи
Автор:Генов, Юлиян Асенов; Genov, Julian Asenov; Чернева, Здравка Тодорова; Cherneva, Zdravka TodorovaДата:1995Резюме:Based on frequency analysis of input excitations and object reactions the transfer function is obtained. Then coefficients are approximated by least squares method. The mechanical characteristics are optioned by solution of non-linear system of equations using optimization procedure.Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Mutual influence
Автор:Bozmarov, Petko Yordanov; Бозмаров, Петко Йорданов; Bozmarov, Yordan Petkov; Бозмаров, Йордан ПетковДата:1995Резюме:The mutual influence is considered between a multitude of identical, homogeneous and uniformly distributed vector fields, and a finite number of singular points, situated in isotropic, limited, three-dimensional space. The mutual influence is realized according to the given formulation of the problem. The obtained results are connected with ...Библиотека: