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1000 tulosta hakusanalla Helen C. Cunningham

Cristaux optiques non linéaires

Cristaux optiques non linéaires

Helen Merina Albert; C Alosious Gonsago

Editions Notre Savoir
2023
pokkari
Ce livre sert d'introduction aux ph nom nes de croissance, aux sp cificit s des processus de croissance, aux ph nom nes optiques non lin aires et aux m thodes de caract risation utilis es pour l'analyse. Le livre est divis en trois chapitres: Le premier chapitre se concentre sur les techniques exp rimentales de croissance cristalline. Les m thodes d'optimisation pour la croissance de monocristaux de haute qualit sont pr sent es en d tail. Les avantages et les inconv nients des m thodes de croissance sont pass s en revue. Le deuxi me chapitre explique la th orie des ph nom nes optiques non lin aires. Les crit res de s lection des mat riaux optiques non lin aires sont pass s en revue. L'histoire de l'optique non lin aire et les diff rents types de mat riaux optiques non lin aires sont discut s. Le r le des acides amin s dans la formation de cristaux optiques non lin aires est bien expliqu . Le troisi me chapitre traite des proc dures de caract risation essentielles pour d terminer la qualit des cristaux.
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La science de la nanotechnologie

La science de la nanotechnologie

Helen Merina Albert; C Alosious Gonsago

Editions Notre Savoir
2024
pokkari
Ce livre offre une vue d'ensemble des processus de synth se, y compris des approches physico-chimiques et cologiques, ainsi que de nombreuses m thodes de caract risation et d'applications des nanotechnologies dans un large ventail de domaines. Le livre comporte cinq chapitres: Le premier chapitre traite de l'histoire des nanotechnologies, des tendances actuelles en mati re de nanotechnologies, des comportements et des diff rents types de nanomat riaux. Le deuxi me chapitre d crit les diff rents processus de synth se des nanoparticules. Ce chapitre d crit les diff rents processus de synth se physico-chimique l'aide de diagrammes appropri s. Le troisi me chapitre aborde les proc d s respectueux de l'environnement utilis s dans la synth se des nanoparticules. Le quatri me chapitre traite des processus de caract risation qui sont essentiels pour valuer la qualit des nanoparticules. Le cinqui me chapitre traite de l'utilisation des nanoparticules dans de nombreux domaines, y compris la science et la technologie. Il aborde les risques potentiels pour la sant pos s par de nombreuses nanoparticules r guli rement utilis es.
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The Secret Life of Cities

The Secret Life of Cities

Jarvis Helen; Pratt Andy C.; Cheng-Chong Wu Peter

Prentice-Hall
2001
nidottu
Contemporary urbanisation has two faces: global flows of people, money and information, and that of localised social and economic disparities. Recent research has focused on the headlines of global cities as control centres of the world economy, and social and economic shock waves that have raged through cities and regions, but less attention has been paid to the secret life of cities, and the changing nature of everyday life in the wake of such changes.This book challenges current research and policy agendas recommending spatial concentration and relocation as a solution to the problems of environmental sustainability and social dislocation. Instead, this book highlights the key linkages between social and environmental problems, it argues that neither are likely to be resolved with a simple spatial fix. The book draws attention to local contexts of contemporary urbanisation emphasising consideration of policy making from the perspective of the household as a key unit of analysis in identifying links between labour and housing markets, transport and leisure.This book draws upon detailed household interviews about the daily experience of life in a global city. It illustrates the dilemmas and solutions that people routinely find in order to go on in their lives. It shows that these local fixes that are managed at the level of the household work in spite of, and sometimes against, existing policies aimed at sustainability. It concludes that policy making needs to be radically overhauled in order to address the integrated nature of people's everyday lives.
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Speak Mandarin, Workbook

Speak Mandarin, Workbook

Fenn Henry C.; Lin Helen T.; Kuo Henry T. K.; Kuo Joseph

YALE UNIVERSITY PRESS
1977
nidottu
This is a thorough and expanded revision of Speak Chinese, by M. Gardner Tewksbury (1948), following two decades of classroom use. The twenty-four lessons of the earlier text have been regrouped into twenty, with the original vocabulary of 750 items increased to 850. Use of Speak Chinese disclosed a need for more exercises both for student use in preparing the lesson and for classroom use by the teacher; this revision therefore includes both a Student Workbook and a Teacher's Manual. The objective of the textbook is to present the basic structural patterns of colloquial Mandarin. The vocabulary is used in a series of dialogues from everyday life. No Chinese characters are used in this text; the Yale romanization is used throughout and the student's attention is concentrated on the new sounds, words, and patterns of the language. The spoken language is written in polysyllabic words, as they are normally spoken, and not as monosyllabic characters, which helps the student to acquire the rhythm of the phrase as well as the pronunciation of the syllable.
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