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1. |
Record Nr. |
UNINA9910455523303321 |
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Autore |
Reid Ken. |
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Titolo |
Truancy and schools / / Ken Reid |
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Pubbl/distr/stampa |
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London ; ; New York : , : Routledge, , 1999 |
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ISBN |
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1-134-62808-0 |
1-280-32876-2 |
0-203-07214-6 |
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Descrizione fisica |
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1 online resource (351 p.) |
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Disciplina |
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Soggetti |
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School attendance - Great Britain |
Education and state - Great Britain |
Electronic books. |
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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 (p. [334]-335) and index. |
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Nota di contenuto |
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Book Cover; Title; Contents; List of boxes; List of tables; Acknowledgements; Foreword; The consequences of truancy; Types of truants and incidence; Types of truancy; Causes of truancy: social perspectives; Causes of truancy: psychological indices; Educational causes of truancy; Government initiatives; School-based initiatives; Whole-school approaches to reducing truancy; Improving school attendance: school-based review; Teachers, teaching and truancy; An internal and an external solution: records of achievement and work placement schemes; OFSTED: guidelines on attendance and behaviour |
Parents and truancyEducation welfare service; Epilogue; Bibliography; Index |
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Sommario/riassunto |
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At present about one million pupils truant from their schools on a daily basis and this book examines why they do it. The numerous reasons for truanting discussed are: * disadvantageous home backgrounds * problems with settling in socially at school * poor performance in school * experiencing bullying in school * not coping with the transition from primary to secondary schooling. This book focuses on the social, psychological and educational causes of truancy. It examines recent research and gives many examples of good practice while also detailing the latest solutions |
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2. |
Record Nr. |
UNINA9910502998903321 |
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Titolo |
Chitosan for biomaterials . III Structure-property relationships / / R. Jayakumar, M. Prabaharan, editors |
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Pubbl/distr/stampa |
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Cham, Switzerland : , : Springer, , [2021] |
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©2021 |
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ISBN |
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Descrizione fisica |
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1 online resource (365 pages) |
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Collana |
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Advances in Polymer Science ; ; Volume 287 |
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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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Nota di contenuto |
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Intro -- Preface -- Contents -- Perspectives and Challenges of Using Chitosan in Various Biological Applications -- 1 Introduction -- 2 Current Status and Challenges of Using Chitosan and Its Derivatives -- 2.1 Chitosan in Biosensor Applications -- 2.2 Application of Chitosan in Food Coating -- 2.3 Chitosan in Drug Delivery Applications -- 2.4 Chitosan in Antimicrobial Applications -- 2.5 Chitosan in Wound Dressing Application -- 2.6 Chitosan in Hemostatic Applications -- 2.7 Applications of Chitosan in Tissue Engineering and Regenerative Medicine -- 3 Conclusion -- References -- Review of the Structure of Chitosan in the Context of Other Sugar-Based Polymers -- 1 Introduction -- 2 Structure and Composition -- 2.1 Structure of Chitin and Chitosan -- 2.1.1 Degree of Deacetylation of Chitosan -- 2.2 Structural Comparison of Chitosan with Other Sugar-Based Polymers -- 2.2.1 Structural Comparison of Chitosan and Cellulose -- 2.2.2 Structural Comparison of Chitosan and Starch -- 2.2.3 Structural Comparison of Chitosan and Alginate -- 3 Interaction of Chitosan with Other Sugar Polymers -- 3.1 Interaction Between Chitosan and Starch -- 3.2 Interaction Between Chitosan and Cellulose -- 3.3 Interaction of Chitosan and Alginate -- 4 Properties of Chitosan -- 4.1 Solubility of Chitosan and Other Sugar Polymers -- 4.2 Thermal Properties of Chitosan and Other Sugar Polymers -- 4.3 Crystallinity of Chitosan and Other Sugar Polymers -- 4.4 Non-toxicity of Chitosan and Other Sugar Polymers -- 4.5 Mucoadhesiveness of Chitosan and Other Sugar |
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Polymers -- 4.6 Biodegradability of Chitosan and Other Sugar Polymers -- 4.7 Biocompatibility of Chitosan and Other Sugar Polymers -- 5 Applications of Chitosan as Compared to the Other Sugar-Based Polymers -- 5.1 Drug Delivery -- 5.2 Vaccine Delivery -- 5.2.1 Starch-Based Vaccine Delivery Systems. |
5.2.2 Cellulose-Based Vaccine Delivery Systems -- 5.2.3 Alginate-Based Vaccine Delivery System -- 5.2.4 Chitosan-Based Vaccine Delivery Systems -- 5.3 Tissue Engineering -- 5.3.1 Skin Tissue Engineering -- 5.3.2 Bone Tissue Engineering -- 5.4 Anti-microbial Applications -- 6 Summary -- References -- Synthesis and Modification Strategies of Chitosan and Its Interaction with Metal Ions -- 1 Introduction -- 2 Chemistry of Chitosan -- 2.1 Covalent Functionalization of Chitosan Without Metal Ions -- 2.2 Functionalization of Chitosan with Metal Ions -- 3 Applications of Chitosan for Environmental Remediation -- 3.1 Fluoride Retention Using Metal-Chitosan Based Composites -- 3.2 Newly Developed Chitosan-Derivatives for Arsenic Adsorption -- 3.3 Metal and Metal-Free Chitosan Materials for Phosphate and Nitrate Adsorption -- 4 Summary and Outlooks -- References -- Synthesis-Structure Relationship of Chitosan Based Hydrogels -- 1 Introduction -- 2 Preparation Methods of Chitosan Hydrogels -- 2.1 Neutralization -- 2.2 Thermo-Sensitive -- 2.3 Cross-Linking -- 2.3.1 Physically Cross-Linked Hydrogels -- Ionic Cross-Linking -- Hydrogen Bonding and Hydrophobic Interactions -- Polyelectrolyte Complexes (PECs) -- 2.3.2 Chemically Cross-Linked Hydrogels -- Chemical Cross-Linkers -- Formation of Schiff Base -- Michael Addition -- Interpenetrating Network -- 3 Preparation Methods of Porous Chitosan Hydrogels -- 3.1 Freeze-Thawing Physical Cryogels -- 3.2 Chemical Cryogels -- 3.3 Lyophilization -- 3.4 Porogen Leaching -- 3.5 Gas Foaming -- 4 Applications of Chitosan Hydrogel -- 4.1 Drug Delivery -- 4.2 Haemostasis -- 4.3 Tissue Engineering -- 4.4 Wound Healing -- 5 Summary -- References -- Antimicrobial Properties of Chitosan and Its Derivatives -- 1 Introduction -- 2 The Antimicrobial Mechanism of Action -- 2.1 Overview -- 2.2 First Studies -- 2.3 Later Work. |
2.4 Other Considerations and Summary -- 3 Synthesis of Antimicrobial Chitosan Derivatives -- 3.1 Reaction Conditions and Selectivity -- 3.2 Degree of Substitution and Structural Characterization -- 4 Antimicrobial Chitosan Derivatives -- 4.1 Carboxymethyl Chitosan (CMC) -- 4.2 N,N,N-Trimethyl Chitosan (TMC) -- 4.3 N-(2-Hydroxyl) Propyl-3-Trimethyl Ammonium Chitosan (HTC) -- 4.4 Hydroxypropyl Chitosan (HPC) -- 4.5 Glycol Chitosan -- 4.6 Other Derivatives -- 4.7 Chitosan Conjugates -- 4.8 Nanoparticles, Hydrogels, and Coatings -- 4.9 Synthesis of Antimicrobial Derivatives Utilizing Protection Groups -- 5 Structure-Antimicrobial Activity Relationship -- 5.1 Degree of Acetylation (DA) -- 5.2 Charge -- 5.3 Substituent Structure -- 5.4 Degree of Substitution (DS) -- 5.5 Molecular Weight -- 5.6 Multiple Substituents -- 6 Summary -- References -- Flavor-Related Applications of Chitin and Chitosan in Foods: Effect of Structure and Properties on the Efficacy -- 1 Introduction -- 2 Applications of Chitin and Chitosan for Improving Saltiness Perception -- 2.1 Strategies for Reducing Sodium Intake -- 2.2 Chitin and Chitosan as Saltiness Enhancers -- 2.2.1 Particle-Shaped Chitin and Chitosan as Saltiness Enhancers -- 2.2.2 Chitin Nanofibers/Nanocrystals for Improving Saltiness Perception -- 3 Chitin and Chitosan Prevent Food from Loss in the Quality of Flavor -- 3.1 Flavor Loss and Off-Flavor Development of Foods -- 3.2 Chitin and Chitosan for Improving the Flavor Stability of Foods -- 3.2.1 Chitin and Chitosan Promote Flavor Stability in Muscle Food Products -- 3.2.2 Other Foods -- 4 Chitin and Chitosan for Food |
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Debittering -- 4.1 The Bitter Taste in Food and debitterization Technologies -- 4.2 Chitin and Chitosan for Debitterization Use in Foods and Herbal Extracts -- 4.2.1 Chitin and Chitosan as Carriers for Debittering Enzymes. |
4.2.2 The Removal of Bitter-Tasting Molecules in Foods by Chitosan -- 4.2.3 Encapsulation Technology -- 5 Summary -- References -- Modified Chitosan Films/Coatings for Active Food Packaging -- 1 History of Packaging: An Introduction -- 2 Desirable Properties of Bio-Based Packaging Films -- 3 Chitosan for Food Packaging -- 3.1 Preparative Methods of Modified Chitosan -- 3.1.1 Preparation of Ch-ge-Q -- 3.1.2 Preparation of Ch-ZnO@gal -- 3.1.3 Preparation of Ch-PVA-NiNPs -- 3.2 Structure-Property Relationships -- 3.2.1 Mechanical Properties of Ch-ge-Q Film -- 3.2.2 Mechanical Properties of Ch-ZnO@gal -- 3.2.3 Mechanical Properties of Ch-PVA-NiNPs -- 3.3 UV-Vis Spectroscopy -- 3.3.1 UV-Vis Spectroscopy of Ch-ZnO@gal -- 3.3.2 UV-Vis Spectroscopy of Ch-ge-Q -- 3.3.3 UV-Vis Spectroscopy of Ch-PVA-NiNPs Film -- 3.4 Water Vapor Permeability (WVP) -- 3.4.1 WVP of Ch-ge-Q -- 3.4.2 WVP of Ch-ZnO@gal -- 3.4.3 WVP of Ch-PVA-NiNPs -- 3.5 Water Solubility -- 3.5.1 Water Solubility of Ch-ge-Q -- 3.5.2 Water Solubility of Ch-ZnO@gal -- 3.5.3 Water Solubility of Ch-PVA-NiNPs -- 3.6 Swelling Properties -- 3.6.1 Swelling Properties of Ch-ge-Q Film -- 3.6.2 Swelling Degree of Ch-ZnO@gal -- 3.6.3 Swelling Degree of Ch-PVA-NiNPs -- 3.7 Oxygen Permeability (OP) -- 3.7.1 Oxygen Permeability (OP) of Ch-ge-Q -- 3.7.2 OP of Ch-ZnO@gal -- 3.8 Antioxidant Activity -- 3.8.1 Antioxidant Activity of Ch-ge and Ch-ge-Q Film -- DPPH Radical Scavenging Activity -- ABTS.+ Scavenging Activity -- 3.8.2 Antioxidant Activity of Ch-ZnO@gal -- DPPH Radical Scavenging Activity -- ABTS+ Scavenging Activity -- 3.8.3 DPPH Radical Scavenging Activity of Ch-PVA-NiNPs -- 3.9 Antibacterial Activity -- 3.9.1 Antibacterial Activity of Ch-ge-Q -- 3.9.2 Antibacterial Activity of Ch-ZnO@gal -- 3.9.3 Antibacterial Activity of Ch-PVA-NiNPs -- 4 Smart Packaging Property -- 4.1 Nanotechnology. |
4.2 Sensing Ability -- 5 Other Chitosan Food Packaging Films -- 6 Other Chitosan Coating Forming Food Packaging -- 7 Modern Food Packaging Techniques -- 7.1 3D Printing for Food -- 7.2 Plasma Technology -- 8 Concluding Remarks -- References -- Chitosan-Based Biosensor Fabrication and Biosensing Applications -- 1 Introduction -- 2 Principles of Surface-Based Biosensor -- 3 Role of Chitosan in Biosensor -- 4 Preparing Chitosan-Based Biosensors -- 4.1 Chitosan Coating on the Electrode -- 4.1.1 Electrodeposition of Chitosan -- 4.2 Immobilization of BRE in the Chitosan Substrate -- 5 Recent Survey of Chitosan in Biosensing Applications -- 5.1 Chitosan-Based DNA Biosensors -- 5.2 Chitosan-Based Immunosensors -- 5.3 Chitosan-Based Enzyme Biosensors -- 6 Conclusion and Future Perspective -- References -- Physical and Chemical Modification of Chitin/Chitosan for Functional Wound Dressings -- 1 Introduction -- 2 Wound Healing Process and Factors Effecting Wound Healing -- 2.1 Hemostasis and Coagulation Phase -- 2.2 Inflammatory Phase -- 2.3 Proliferative Phase -- 2.4 Remodeling Phase -- 3 Fabrication of Chitin/Chitosan Wound Dressings in Various Forms -- 3.1 Hydrogels -- 3.1.1 Chitin-Based Hydrogel -- 3.1.2 Chitosan-Based Hydrogel -- 3.2 Membranes -- 3.2.1 Chitin-Based Membranes -- 3.2.2 Chitosan-Based Membranes -- 3.3 Fiber and Electrospun Mat -- 3.4 Sponges and Scaffolds -- 3.5 Hydrocolloids -- 4 Commercially Available Chitin and Chitosan Wound Dressings -- 5 Physical and Chemical Modification of Chitin and Chitosan for Wound Dressing in Specific Purposes -- 6 Chitin and Chitosan-Based Functional Wound Dressings -- 6.1 Hemostatic (Blood |
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Coagulant) Wound Dressings -- 6.2 Antimicrobial Wound Dressings -- 6.2.1 Physical Modification of Chitin and Chitosan for Antimicrobial Wound Dressings -- Incorporation of AgNPs or Ag+ -- Hybridization of Chitosan and ZnO. |
6.2.2 Chemical Modification of Chitin and Chitosan for Antimicrobial Wound Dressings. |
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3. |
Record Nr. |
UNINA9910135527203321 |
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Titolo |
IEEE Std 1667-2006 : IEEE standard protocol for authentication in host attachments of transient storage devices / / Institute of Electrical and Electronics Engineers |
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Pubbl/distr/stampa |
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Piscataway, New Jersey : , : IEEE, , 2007 |
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ISBN |
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Descrizione fisica |
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1 online resource (viii, 49 pages) |
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Collana |
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Disciplina |
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Soggetti |
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Computer storage devices |
Computers - Access control - Standards |
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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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Sommario/riassunto |
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This project defines a standard protocol for secure authentication and creation of trust between a secure host and a directly attached Transient Storage Device (TSD), such as a USB flash drive, portable hard drive, or cellular phone. The protocol has only an indirect relationship with data integrity/security, and does not directly address issues of authorization and enforcement. The protocol also does not address devices that are attached using a network connection. However, a device that uses a point-to-point wireless connection such as WUSB may comply with this protocol. |
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