Title:Coherent control of intramolecular processes Part II: Adiabatic States Approach to the Coherent Control
Author:Koprinkov, Ivan Georgiev; Копринков, Иван ГеоргиевDate:1995Abstract: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.Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Coherent control of intramolecular processes Part I: Polarization Control on Predissociation of Iodine Molecule under On-Resonance Rovibronic Excitation
Author:Koprinkov, Ivan Georgiev; Копринков, Иван Георгиев; Pique, J. P.; Пик, Ж. П.; Naylor, G. A.; Нейлор, А. Г.Date:1995Abstract: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.Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Cavity waveguide-output lasers. mode locking - picosecond operation
Author:Koprinkov, Ivan Georgiev; Копринков, Иван Георгиев; Ilev, Ilko K.; Илев, Илко К.Date:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Аномално поведение на втората константа на магнитна анизотропия с еднойонен произход във функция на намагнитването и температурата
Author:Милев, Йонко; Millev, Yonko; Фенле, Манфред; Fahnle, ManfredDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:New fiber-optic autocollimation method for determination and control of physical qualities
Author:Ilev, Ilko K.; Илев, Илко К.Date:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Позиционно - чувствителен фотодетектор на основата на хидрогенезиран аморфен силиций
Author:Съева, Дочка; Sueva, Dochka; Тонева, Атанаска; Toneva, AtanaskaDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Трибологията - съвременна методология на интеграционните процеси
Author:Манолов, Нягол Точев; Manolov, Nyagol TochevDate:1995Abstract: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 originLibrary:
TECHNICAL UNIVERSITY - SOFIA
Title:Разработване на учебни курсове по темпус договор “Обучение и практика по приложна механика и теория на системите с компютърно ориентирани приложения”
Author: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 SlavovDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Безрезонансни трептения с течно и сухо триене
Author:Петров, Тодор; Petrov, TodorDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Оценка на трибологичното поведение на смазочни материали на фирма “Дуралюб” - България
Author:Янков, Александър Евгениев; Yankov, Alexander Evgeniev; Кавалджиев, Станчо Йорданов; Kavaldjiev, Stancho JordanovDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Analytical expressions for the stress distribution in a 4-node isoparametric finite element
Author:Tenchev, Rosen Tenchev; Тенчев, Росен ТенчевDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:The stress sampling points and the convergence of the h — adaptive finite element method
Author:Tenchev, Rosen Tenchev; Тенчев, Росен ТенчевDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Якостен критерий за материали с различно съпротивление на опън и натиск
Author:Стойчев, Георги Борисов; Stoychev, Georgy Borisov; Тущев, Камен Николов; Tushtev, Kamen NikolovDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Определяне на статичните и динамичните еластични и демпфиращи характеристики на реални металогумени съединители
Author:Полихронов, Георги Тодоров; Polihronov, Georgi TodorovDate:1995Abstract: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.Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Специфична деформационна работа при кос удар с конус по безкрайна мембрана
Author:Карапетрова, София Василева; Karapetrova, Sophia VasilevaDate:1995Abstract: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 ...Library:
Title:Self-exited oscilllations within mixed friction regimes when reading the hydrodynamic theory of lubrication
Author:Butchvarov, Stefan Nikolov; Бъчваров, Стефан Николов; Karapetkov, Stanimir Mihailov; Карапетков, Стефан МихаиловDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Оценка на ергономичните качества на работното място на мотокар универсален високоповдигач с полуеластично окачване на силовия агрегат
Author:Тодоров, Михаил Дамянов; Todorov, Michael Damyanov; Генов, Юлиян Асенов; Genov, Joulian AsenovDate:1995Abstract: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 ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Алгоритъм и числена процедура за идентификация на механичните характеристики на линейни динамични системи
Author:Генов, Юлиян Асенов; Genov, Julian Asenov; Чернева, Здравка Тодорова; Cherneva, Zdravka TodorovaDate:1995Abstract: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.Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Mutual influence
Author:Bozmarov, Petko Yordanov; Бозмаров, Петко Йорданов; Bozmarov, Yordan Petkov; Бозмаров, Йордан ПетковDate:1995Abstract: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 ...Library: