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1. |
Record Nr. |
UNINA9910962135103321 |
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Titolo |
Photochemistry : UV/VIS spectroscopy, photochemical reactions and photosynthesis / / Karen J. Maes and Jaime M. Willems, editors |
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Pubbl/distr/stampa |
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New York, : Nova Science Publishers, c2011 |
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ISBN |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (399 p.) |
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Collana |
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Chemical engineering methods and technology |
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Altri autori (Persone) |
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MaesKaren J |
WillemsJaime M |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Intro -- PHOTOCHEMISTRY: UV/VIS SPECTROSCOPY, PHOTOCHEMICAL REACTIONS AND PHOTOSYNTHESIS -- PHOTOCHEMISTRY: UV/VIS SPECTROSCOPY, PHOTOCHEMICAL REACTIONS AND PHOTOSYNTHESIS -- CONTENTS -- PREFACE -- THE PHOTOCHEMISTRY OF NOVEL ELECTRON-TRANSFER THREE-COMPONENT VISIBLE LIGHT PHOTOINITIATING SYSTEMS -- ABSTRACT -- ABBREVIATIONS -- INTRODUCTION -- THREE-COMPONENT PHOTOINITIATING SYSTEMS -- THREE-COMPONENT PHOTOINITIATING SYSTEMS. REVIEW -- RESULTS AND DISCUSSION -- Polymethine Dyes as Sensitizers in the Three-Component Photoinitiating Systems -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/N-Alkoxypyridinium Salt -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/N,N'-Dialkoxy-2,2'-Bipyridilium Salt -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/1,3,5-Triazine Derivatives -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/N-Methylpicolinium Esters -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/Cyclic Acetals -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/n-Butyltriphenylborate/Thiol -- Three-Component Photoinitiating Systems Composed of Polymethine Dye/Trichloromethyl-1,3,5- |
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Triazine/Heteroaromatic Thiol -- Excited State Processes in the Excited Singlet State of Sensitizer in the Three-Component Photoinitiating Systems -- Thermodynamic of Free Radicals Formation and the Application of Marcus Theory for Kinetics Study of Free Radical Polymerization of Multifunctional Acrylates -- CONCLUSION -- ACKNOWLEDGMENT -- REFERENCES -- PHOTOREACTIONS OF BENZOPHENONE IN SOLID MEDIA: RECENT DEVELOPMENTS AND APPLICATIONS -- ABSTRACT -- 1. INTRODUCTION -- 2. PHOTOPHYSICS AND PHOTOCHEMISTRY OF BENZOPHENONE. |
2.1. Photophysical Processes of Benzophenone -- 2.2. The Main Photoreactions Induced by Benzophenone in Organic Media -- 2.2.1. Hydrogen Atom Abstraction -- 2.2.2. Peculiar aspects in Photoreduction of Benzophenone in a Solid Matrix -- 2.2.3. Photoreactions of Benzophenone with Olefinic or Acetylenic Compounds. -- 2.2.4. Photochemical Reactions of Benzophenones in the Presence of Amine Derivatives -- 3. PHOTOCROSSLINKING OF POLYMERS -- 3.1. Photoreactions in Saturated Hydrocarbon Polymers -- 3.2. Photoinitiated Crosslinking of Diene Polymers -- 3.3. Photocrosslinking of Inorganic Polymers - Polydimethylsiloxanes -- 4. SURFACE PHOTOGRAFTING -- 5. PHOTOPHYSICS AND PHOTOCHEMISTRY OF BENZOPHENONE ADSORBED ON VARIOUS SUBSTRATES -- 6. CONCLUSIONS -- REFERENCES -- PHOTO-CHEMICAL METHODS AS AN ALTERNATIVE METHODOLOGY IN THE DEPOSITION OF MATERIALS WITH CHEMICAL SENSOR PROPERTIES AND PHOTO-LUMINESCENT CHARACTERISTIC -- ABSTRACT -- 1. INTRODUCTION -- 1.1. Some Methods of Photodeposition -- 1.2. Photo-Reactivity of the Complex Precursors -- 2. SOME MATERIALS PHOTO-DEPOSITED PROPOSED -- 2.1. Zno Thin Films and Their use as Gas Sensor -- 2.2. Evaluation of Characteristics Luminescence of HfO2-Ln Thin Films (where: Ln = Er or Eu) -- 3. EXPERIMENTAL DETAILS -- 3.1. General Procedure -- 3.2. Preparation of Amorphous Thin Films -- 3.2.1. Preparation of the Precursors Β-Dikentonate Complexes -- 3.2.2. Photolysis of Complexes as Films on Si (100) Surfaces -- 3.3. Evaluation of Gas-Sensing Properties of ZnO-M (where M= Pd or Pt) -- 3.4. Evaluation of the Characteristics Luminescent of the HfO2-Ln Films (where Ln= Er or Eu) -- 4. RESULTS AND DISCUSSION -- 4.1. Characterization of ZnO-Pd and ZnO-Pt Thins Films -- 4.2. Preliminary Evaluation of the Gas Sensitivity of the ZnO and ZnO-Pt Thin Films. |
4.3. Characterization of HfO2-Ln Photodeposited Thin Films ( where Ln = Eu or Er) -- 4.4. Photoluminescence Study of HfO2-Ln Thin Films -- 4.5. Proposed Photoluminescence Mechanism -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- PHOTOLABILE MOLECULES AS LIGHT-ACTIVATED SWITCHES TO CONTROL BIOMOLECULAR AND BIOMATERIAL PROPERTIES -- ABSTRACT -- 1. INTRODUCTION -- 2. CAGING OF BIOLOGICAL MOLECULES -- 2.1. Small Biologically Relevant Molecules -- 2.2. Peptides and Proteins -- 2.3. Nucleotides and Nucleic Acids -- 2.4. Drugs -- 3. PHOTOLABILE MOLECULES IN BIOLOGICAL DEVICES AND BIOMATERIALS -- 3.1. Patterning Biomolecules and Cells on Solid Surfaces -- 3.2. Biomaterials for Controlled Release -- 3.3. Controlling Biomaterial Physical Properties -- 3.4. Controlling Biomaterial Chemical Properties: Patterning Biomolecules and Cells -- CONCLUSION -- REFERENCES -- PHOTOSYSTEM AT HIGH TEMPERATURE: MECHANISMS OF ADAPTATION AND DAMAGE -- ABSTRACT -- 1. GENERAL INTRODUCTION -- 2. STRUCTURE AND FUNCTION OF PHOTOSYSTEMS WITH TYPE-II REACTION CENTER -- 2.1. Purple Bacteria -- 2.2. Cyanobacteria -- 2.3. Higher Plants -- THERMAL STABILITY OF TYPE-II REACTION CENTERS -- 3.1. Purple Bacteria -- 3.2. Cyanobacteria -- 3.3. Higher Plants -- 4. HEAT-DERIVED DAMAGE |
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OF PHOTOSYSTEMS IN HIGHER PLANT -- 4.1. Light-Mediated Damage of Photosystem in Heat-Stressed Higher Plants -- 4.2. Light-Independent Mechanisms of Damage of Photosystems in Heat-Stressed Higher Plants -- 5. ADAPTATION MECHANISM OF PHOTOSYNTHESIS AGAINST HEAT STRESS -- 6. IMPROVEMENT OF HEAT TOLERANCE BY GENETIC ENGINEERING -- 7. INDUCTION OF HEAT TOLERANCE BY ARTIFICIAL TREATMENTS OF CHEMICALS -- 7.1. Ca2+ -- 7.2. H2O2 -- 7.3. Phytohormone -- 7.4. Environmental Elicitor -- CONCLUSION -- ACKNOWLEDGMENT -- REFERENCES. |
THE LITTLE-KNOWN WAVELENGTH EFFECT IN PROVITAMIN D PHOTOCHEMISTRY: THE AMBIGUOUS ROLE OF THE WEAK IRREVERSIBLE CHANNEL -- ABSTRACT -- INTRODUCTION -- 1. COMMONLY ACCEPTED INTERPRETATION OF PROVITAMIN D PHOTOISOMERIZATION -- 2. SPECIFIC FEATURES OF PROVITAMIN D PHOTOISOMERIZATION UNDER XECL LASER EXCITATION AT Λ = 308 NM -- 2.1. Influence of Two-Photon Processes -- 2.2. Influence of the Radiation Wavelength -- 2.3. Simplified Model of Reversible Photoconversions with a Weak Irreversible Channel -- 3. SPECTROPHOTOMETRIC ANALYSIS OF THE MULTICOMPONENT PHOTOISOMERIC MIXTURE -- 4. IRRADIATION WITH KRF AND XECL EXCIMER LASERS -- 4.1. The Provitamin D Photoisomerization upon Excitation with Krf Laser at the Wavelength Λ = 248 Nm -- 4.2. Concentration Kinetics under Irradiation with the Xecl Laser At 308 Nm -- 5. THE PROBLEM OF THE PHOTOCHEMICAL STAGE OPTIMIZATION IN THE INDUSTRIAL PRODUCTION OF VITAMIN D -- 5.1. The Method of Two-Stage Irradiation -- 5.2. The Role of the Irreversible Channel Under Optically Dense Layer Conditions -- 6. BIOLOGICAL DOSIMETRY OF SOLAR UV RADIATION IN SITU USING AN IN VITRO MODEL OF VITAMIN D SYNTHESIS -- 6.1. Duality of Solar UV-B Radiation: Vitamin D Synthesis versus Skin Erythema -- 6.2. Spectral Selectivity of the 'D-Dosimeter' -- 6.3. Measurement of the Vitamin D Action Spectrum in Vitro -- 6.4. Inter-Relation between the in Vivo and in Vitro Action Spectra of Vitamin D Synthesis -- CONCLUSIONS -- REFERENCES -- EXPLORING ORGANIC PHOTOCHEMISTRY WITH COMPUTATIONAL METHODS: AN INTRODUCTION -- 1. ABSTRACT -- 2. INTRODUCTION -- 3. THEORETICAL BACKGROUND -- 3.1. The CASSCF Method -- 3.2. The CASPT2 Method -- 3.3. The TD-DFT Methods -- 3.4. The Choice of a Method -- 4. COMPUTING THE PHOTOCHEMICAL REACTION PATH -- 5. PRACTICAL CONSIDERATIONS -- 5.1. Choice of the Chemical Structure -- 5.2. Choice of the Active Space. |
5.3. Computing a Photochemical Reaction -- 5.4. Software -- 6. CASE STUDY: PHOTOCYCLOADDITION OF IMINES TO ALKENES -- CONCLUSION -- ACKNOWLEDGMENT -- REFERENCES -- RECENT PROGRESS IN CHIRALITY RESEARCH USING CIRCULARLY POLARIZED LIGHT -- ABSTRACT -- 1. INTRODUCTION -- 1.1. Astrobiology -- 1.2. Habitability and Originability -- 1.3. Enantiomer and Homochirality of the Terrestrial Life -- 1.4. Early Earth and Early Life -- 1.5. The Birth Place of Our Solar System -- 1.6. Linear and Circular Imaging Polarimetry in Astronomy -- 2. ORGANIC MATERIALS AND WATER IN SPACE -- 2.1. Extraterrestrial Organic Matter, Amino Acid, Amino Acid Precursor, and Sugar -- 2.2. Extraterrestrial Water -- 3. ENANTIOMERIC EXCESS AND ASYMMETRIC PHOTOCHEMISTRY -- 3.1. Enantiomeric Excess in Meteorites and the Late Heavy Bombardment -- 3.2. Amino Acid and Amino Acid Precursor by Photochemistry -- 3.3. Enantiomeric Excess by Asymmetric Photochemistry -- 3.4. Asymmetric Amplification of Tiny Enantiomeric Excess for Amimo Acid and Sugar -- 4. CIRCULARLY POLARIZED LIGHT SOURCE IN SPACE -- 4.1. Possible Sources of Circular Polarization -- 4.2. Wide Extension of Linear and Circular Polarization in the Orion Nebula -- CONCLUSION -- |
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ACKNOWLEDGMENT -- REFERENCES -- PHOTOINDUCED TRANSFORMATION PROCESSES IN SURFACE WATERS -- ABSTRACT -- 1. INTRODUCTION -- 2. AN OVERVIEW OF PHOTOINDUCED REACTIONS IN SURFACE WATERS -- 2.1. Direct Photolysis Processes -- 2.2. Transformation Photosensitised by Chromophoric Dissolved Organic Matter (CDOM) -- 2.3. Reactions induced by the Hydroxyl Radical, OH -- 2.4. Reactions Induced by the Carbonate Radical, CO3 -- 2.5. Other Reactions -- 3. MODELLING OF THE MAIN PHOTOCHEMICAL REACTIONS IN SURFACE WATERS -- 3.1. Surface-Water Absorption Spectrum -- 3.2. Direct Photolysis -- 3.3. Reactions with 3CDOM* -- 3.4. Reactions with OH. -- 3.5. Reactions with CO3. |
3.6. Reactions with 1O2. |
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Sommario/riassunto |
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This book presents current research in the study of photochemistry, including novel electron-transfer three-component visible light photoinitiating systems; photolabile molecules as light-activated switches to control biomolecular and biomaterial properties; organic photochemistry with computational methods; photoinduced transformation processes in surface waters and photochemical processes in needles of over-wintering evergreen conifers. |
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2. |
Record Nr. |
UNINA9910952317203321 |
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Titolo |
Nigeria in global politics : twentieth century and beyond : essays in honor of Professor Olajide Aluko / / Olayiwola Abegunrin and Olusoji Akomolafe, editors |
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Pubbl/distr/stampa |
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New York, : Nova Science Publishers, 2006 |
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ISBN |
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Descrizione fisica |
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1 online resource (353 p.) |
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Altri autori (Persone) |
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AlukoOlajide |
AbegunrinOlayiwola |
AkomolafeOlusoji |
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Disciplina |
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Soggetti |
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Nigeria Foreign relations 1960- |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Democratization process and good governance in Nigeria / Bamidele A. Ojo -- Authoritarian mindset, politics and democratic rule in Nigeria / W. Alade Fawole -- Federal character in Nigeria : bane or blessing? / Adeoye A. Akinsanya -- The dividends of democracy : the Nigeria experience / Mojubàolú Olúfúnké Okome -- Peacekeepers abroad, trouble-makers at home : the Nigerian army, national politics and sub-regional policies in the 1990s / Abiodun Alao -- International constraints on foreign policy formulation : a case of Nigeria and regional security in West Africa / Aderemi Ajibewa -- Restoring democracy in Sierra Leone : Nigeria's hegemonic foreign policy in West Africa, 1993-1998 / Adebayo Oyebade -- Nigeria and southern African liberation struggle / Olayiwola Abegunrin and Olusoji Akomolafe -- Abubakar Tafawa Balewa and Nigeria's foundation of a non-neutralist foreign policy / Hakeem Ibikunle Tijani -- An elusive friendship : Nigerian-Soviet/Russian relations, 1960-2000 / Maxim Matusevich -- Nigeria and Israel : change and continuity in diplomatic relations / Olufolajimi Adejokun -- Nigeria and the European Union : the Lome years and beyond / Victor A.O. Adetula -- Changing paradigm : France, Nigeria and Francophone Africa after the Cold War / Tale Omole, Funso Adesola and Yetunde Ajibade -- The state, foreign policy, and conflict in Africa / Mae C. King -- Nigeria, the United States and the war on |
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terrorism : the stakes and the stance / Soji Akomolafe -- The 911 incident and its aftermath : implications for Nigeria-U.S. relations / Fola Soremekum -- Nigerian foreign policy under the Obasanjo administration, 1999-2005 / Olayiwola Abegunrin -- Bibliography on Nigerian foreign policy, 1960-2004 : national, regional, continental and global / Olayiwola Abegunrin. |
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Sommario/riassunto |
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This book examines Nigeria's role in the global politics of the last century. Written from various perspectives, each contributor brings to bear his or her discipline and insight to this topic. The links between internal and external factors and the relationship between internal developments and external reactions are carefully examined. This exploration of Nigeria's recent past will provide the essential background needed to understand Nigeria's role in global politics in the present time. |
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