Ruxandra vidu (14 Ergebnisse)

Zustand: Fine. Used book that is in almost brand-new condition. May contain a remainder mark. Better World Books: Buy Books. Do Good. Andriuca, Diana (illustrator).

Zustand: New. pp. 114 Illus. Andriuca, Diana (illustrator).

Paperback. Zustand: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Andriuca, Diana (illustrator).

Taschenbuch. Zustand: Neu. Neuware - Three exceptional folk stories written by Petre Ispirescu inaugurate a series of bilingual, illustrated books for children. The first volume consists of 'The Wonderful Bird, Youth Without Age and Life Without Death,' and 'The Morning Star and The Evening Star.'. Andriuca, Diana (illustrator). …

Taschenbuch. Zustand: Neu. Neuware - Viata Maicii Doumnului, asa cum este cunoscuta in traditia bisericii ortodoxe. Scrisa intr-o frumoasa, calda si limpede curgatoare limba romaneasca cartea este deschisa tuturor si povesteste cele mai importante momente din viata Maicii Domnului (nasterea, intrarea in templu, bunavestire, nasterea Domnului, momente traite alaturi de Fiul sau dumnezeiesc si de patimile Lui, adormirea). Fiecare moment este insotit de un tropar, un condac si un irmos, ceea ce face posibila, pentru cei doritori de mai multa liniste sufleteasca, incheierea lecturii fiecarui capitol in meditatie si reculegere. Cartea mai cuprinde un capitol despre Praznicul Acoperamantului Maicii Domnului, invataturi despre tainele icoanei Maicii Domnului, cele mai cunoscute rugaciuni catre Sfanta Fecioara care pot fi memorate si folosite ca hrana de toate zilele a sufletului si cuvintele unui frumos cantec vechi romanesc. Prezentata intr-o foarte ingrijita tinuta grafica cu minunate icoane pe cele doua coperti, cartea poate fi un pretios dar pentru fiecare crestin de orice varsta. …

Zustand: New.

Zustand: New. KlappentextrnrnThree exceptional folk stories written by Petre Ispirescu inaugurate a series of bilingual, illustrated books for children. The first volume consists of The Wonderful Bird, Youth Without Age and Life Without Death, and The Morn. Andriuca, Diana (illustrator).

Zustand: New.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware - 'Da, cartea aceasta este o comoara sufleteasca, un pretios giuvaer de familie, un document impresionant uman, plin de invataminte. Ea depune marturie despre o viata de om care a inceput cu frumusetea curata a copilariei, cu visele si zburdalnicia adolescentei, a continuat cu injghebarea unui camin si primele realizari ale tineretei increzatoare si harnice, a trecut prin valtoarea evenimentelor dramatice ale razboaielor, pastrand demnitatea si curajul, a fost lovita de primele pierderi, de nedreptatile, impilarile si stramtorarile tot mai mari ale vremii, a inregistrat cu melancolie golirea cuibului casei si cu mare durere pierderea sotului sau, a continuat cu adunarea tot mai mare a poverilor neputintelor fi zice si a bolii si a terminat in singuratate, pastrand insa o pace, dragoste si nadejde care nu s-au stins decat odata cu stingerea lumanarii vietii.' - Horia Ioan Groza.…

Zustand: Hervorragend. Zustand: Hervorragend | Sprache: Englisch | Produktart: Bücher | Research work has been continuously dedicated by the scientific community to improve or optimize the physical properties of thin films. In this present book, we bring into the attention an important research axis developed in our research group, i.e. the use of irradiation with intense gamma radiation and electron beam energy with the aim to improve and customize the structural, optical, morphological and electrical properties of thin film semiconductors for space and terrestrial photovoltaic applications, dosimetry of ionizing radiation and photocatalysis for the depollution of water contaminated by organic dyes. The number of worldwide scientific contributions and publications in this area of research is considered low compared to other research areas, hence the desire to contribute to developing and enriching this research area of thin film semiconductors. Our work was carried out in collaboration with the National Center for Nuclear Sciences and Technologies (CNSTN) in Tunisia, which owns the industrial equipment for gamma irradiation. An agreement was signed between the LPMC (define LPMC) laboratory and the CNSTN to carry out several gamma irradiation campaigns for several types of materials. Another collaboration was made with the COFICAB industrial company that produces electric cables, which is a subsidiary of the CHAKIRA group, to offer us an electron beam time with their low energy electron accelerator. Irradiation by ionizing radiation is widely used in food preservation to extend their storage or marketing periods and also for the sterilization of medical products. Among the outstanding industrial applications of electron beam irradiation is its use to improve the physical properties of the polymers making up the sheaths of electrical cables. In fact, the electrons emitted by the accelerators entrain free radicals in the polymers, the recombination of which leads to an improvement in their resistance to the high temperature of fires and to harmful solvents. In addition, many research works use irradiation to study the resistance of materials to intense nuclear radiation or to increase their life spans and for certain other materials to strengthen their nuclear waste storage capacities. Hence our motivation to use gamma radiation or electron beam irradiation to try to find improvements in the physical properties of semiconductor thin films used in the photovoltaic field or photocatalysis. Indeed, irradiation could be considered as a powerful tool to modify in a controlled way the electrical, structural, optical and morphological properties of these thin films. The choice of materials was motivated by their role played in optical windows, absorbers or buffer layers, which are commonly used in the new generation of photovoltaic cells. The two families of materials are the transparent conductive oxides (TCO), such as Fe-doped In2O3, and sulfur-based compounds, such as In2S3, Cu2ZnSnS4 and Sm-doped CaSO4. The synthesis and growth of these materials have been developed and optimized in our LPMC laboratory through previous research works. To the best of our knowledge, our work on the irradiation of thin films by gamma radiation of thin films of Cu2ZnSnS4, In2S3 and In2O3 doped with iron and fluorine is novel and the results are of great interest for the scientific community. The main objective of applying irradiation is to systematically control and improve the structural, optical, morphological, or electrical properties of thin films by applying very precise doses of gamma radiation or electron beams. Irradiation can cause structural defects in crystal lattices, generate excitations, change, or transform energy levels or even break atomic bonds, which can be used to tailor the properties of thin film semiconductors for specific applications.…

Softcover. Zustand: gut. 2023. Effects of Gamma Radiation and Low Energy Electrons Beam on Semiconductor Thin Films In englischer Sprache. pages.

Kartoniert / Broschiert. Zustand: New.

Zustand: New. Halus, Eva (illustrator).