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[null,"1.","Record Nr.",null,"UNINA9910629592603321"]
[null,null,"Autore",null,"Beer Josef De"]
[null,null,"Titolo",null,"Self-Directed Learning in the era of the COVID-19 pandemic : Research on the affordances of online virtual excursions / / Josef De Beer [and three others]"]
[null,null,"Pubbl/distr/stampa",null,"Cape Town, South Africa : , : AOSIS, , 2022"]
[null,null,"Descrizione fisica",null,"1 online resource (380 pages)"]
[null,null,"Collana",null,"NWU Self-Directed Learning Series"]
[null,null,"Disciplina",null,"379"]
[null,null,"Soggetti",null,"Education and state"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Sommario/riassunto","The COVID-19 pandemic severely impacted teaching and learning at higher education institutions (HEIs), and this book disseminates research findings on a series of cross-campus online initiatives of the North-West University (NWU) to ensure high-quality self-directed learning, whilst simultaneously attending to the need for inclusion and diversity in this challenging context. The golden thread running through the 13 chapters is how this HEI responded to the pandemic in a creative way through its investment in online virtual student excursions, based on problem-based, cooperative learning and gamification principles to support self-directed learning. Whereas virtual excursions usually refer to learning opportunities where 'a museum, author, park or monument is brought to the student' (Hehr 2014:1), the virtual excursion in our context is an activity system (Engeström 1987) where students' learning is scaffolded across the zone of proximal development (Vygotsky 1978) and where their 'social and pedagogical boundaries are stretched or expanded' (De Beer & Henning 2011:204). Students engage as Homo ludens, the playing human (Huizinga 1955), in learning activities embedded in an ill-structured problem, and through reflective activities, they are encouraged to reflect on their own naïve understandings or biases. This 'tension', or in Veresov (2007) parlance, 'dramatical collisions', provides a fertile learning space for self-directed learning."]
[null,"2.","Record Nr.",null,"UNINA9910138976103321"]
[null,null,"Titolo",null,"Advanced carbon materials and technology / / edited by Ashutosh Tiwari and S.K. Shukla"]
[null,null,"Pubbl/distr/stampa",null,"Salem, Massachusetts : , : Scrivener Publishing, , [2014]"]
[{"$nulls":4},"©2014"]
[null,null,"ISBN",null,"1-118-89543-6"]
[{"$nulls":4},"1-118-89539-8"]
[{"$nulls":4},"1-118-89536-3"]
[null,null,"Descrizione fisica",null,"1 online resource (514 p.)"]
[null,null,"Collana",null,"Advance materials series"]
[null,null,"Disciplina",null,"620.193"]
[null,null,"Soggetti",null,"Carbon"]
[{"$nulls":4},"Carbon composites"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Cover; Title Page; Copyright Page; Contents; Preface; Part 1 Graphene, Carbon Nanotubes and Fullerenes; 1 Synthesis, Characterization and Functionalization of Carbon Nanotubes and Graphene: A Glimpse of Their Application; 1.1 Introduction; 1.2 Synthesis and Characterization of Carbon Nanotubes; 1.3 Synthesis and Characterization of Graphene; 1.3.1 Micromechanical Cleavage of Highly Oriented Pyrolytic Graphite; 1.3.2 Chemical Vapor Deposition Growth of Graphene either as Stand Alone or on Substrate; 1.3.3 Chemical and Thermal Exfoliation of Graphite Oxide; 1.3.4 Arc-Discharge Method"]
[{"$nulls":4},"1.4 Methods Used in Our Lab: CVD, Thermal Exfoliation, Arc Discharge and Chemical Reduction1.4.1 Raman Spectra; 1.4.2 Electrochemical Exfoliation; 1.5 Functionalization of Carbon Nanotubes and Graphene; 1.5.1 Covalent Functionalization; 1.5.2 Non-Covalent Functionalization; 1.5.3 FTIR Analysis of CNTs and FCNTs; 1.6 Applications; 1.7 Conclusion; Acknowledgements; References; 2 Surface Modification of Graphene; 2.1 Introduction; 2.2 Surface-Modified Graphene from GO; 2.2.1 Covalent Surface Modification; 2.2.2 Non-covalent Surface Modification; 2.3 Application of Surface-Modified Graphene"]
[{"$nulls":4},"2.3.1 Polymer Composites2.3.2 Sensors; 2.3.3 Drug Delivery System; 2.3.4 Lubricants; 2.3.5 Nanofluids; 2.3.6 Supercapacitor; 2.4 Conclusions and Future Directions of Research; Acknowledgement; References; 3 Graphene and Carbon Nanotube-based Electrochemical "]
[{"$nulls":4},"Biosensors for Environmental Monitoring; 3.1 Introduction; 3.1.1 Carbon Nanotubes (CNTs); 3.1.2 Graphene (GR); 3.1.3 Electrochemical Sensors; 3.1.4 Sensors and Biosensors Based on CNT and GR; 3.2 Applications of Electrochemical Biosensors; 3.2.1 Heavy Metals; 3.2.2 Phenols; 3.2.3 Pesticides; 3.3 Conclusions and Future Perspectives"]
[{"$nulls":4},"References4 Catalytic Application of Carbon-based Nanostructured Materials on Hydrogen Sorption Behavior of Light Metal Hydrides; 4.1 Introduction; 4.2 Different Carbon Allotropes; 4.3 Carbon Nanomaterials as Catalyst for Different Storage Materials; 4.4 Key Results with MgH2, NaAlH4 and Li-Mg-N-H Systems; 4.4.1 Magnesium Hydride; 4.4.2 Sodium Alanate; 4.4.3 Amides/Imides; 4.5 Summary; Acknowledgements; References; 5 Carbon Nanotubes and Their Applications; 5.1 Introduction; 5.2 Carbon Nanotubes Structure; 5.3 Carbon Nanotube Physical Properties; 5.4 Carbon Nanotube Synthesis and Processing"]
[{"$nulls":4},"5.5 Carbon Nanotube Surface Modification5.6 Applications of Carbon Nanotubes; 5.6.1 Composite Materials; 5.6.2 Nano Coatings - Antimicrobials and Microelectronics; 5.6.3 Biosensors; 5.6.4 Energy Storages; 5.7 Conclusion; References; 6 Bioimpact of Carbon Nanomaterials; 6.1 Biologically Active Fullerene Derivatives; 6.1.1 Introduction; 6.1.2 Functionalization/Derivatization of Fullerene C60; 6.1.3 Biological Activity of Non-Derivatized Fullerene C60; 6.1.4 Biological Activity of Derivatized Fullerene C60; 6.1.5 Chemical Synthesis of Fullerenol C60(OH)n; 6.1.6 Fullerenol and Biosystems"]
[{"$nulls":4},"6.2 Biologically Active Graphene Materials"]
[null,null,null,"Sommario/riassunto","The expansion of carbon materials is multidisciplinary and is related to physics, chemistry, biology, applied sciences and engineering. The research on carbon materials has mostly focused on aspects of fundamental physics as they unique electrical, thermal and mechanical properties applicable for the range of applications. The electrons in graphene and other derived carbon materials behave as dirac fermions due to their interaction with the ions of the lattice. This direction has led to the discovery of new phenomena such as Klein tunneling in carbon based solid state systems and the so-called"]
[null,"3.","Record Nr.",null,"UNINA9910715453203321"]
[null,null,"Titolo",null,"American water-rotted hemp, &c. &c. Reports from the Navy Department, in relation to experiments on American water-rotted hemp, when made into canvass, cables, and cordage. January 18, 1828. Printed by order of the House of Representatives"]
[null,null,"Pubbl/distr/stampa",null,"[Washington, D.C.] : , : [publisher not identified], , 1828"]
[null,null,"Descrizione fisica",null,"1 online resource (35 pages)"]
[null,null,"Collana",null,"House document / 20th Congress, 1st session. House ; ; no. 68"]
[{"$nulls":4},"[United States congressional serial set ] ; ; [serial no. 171]"]
[null,null,"Soggetti",null,"Agriculture - Research"]
[{"$nulls":4},"Canvas"]
[{"$nulls":4},"Government publications - United States"]
[{"$nulls":4},"Cordage industry"]
[{"$nulls":4},"Flax"]
[{"$nulls":4},"Foreign trade promotion"]
[{"$nulls":4},"Foreign trade and employment"]
[{"$nulls":4},"Hemp"]
[{"$nulls":4},"Imports"]
[{"$nulls":4},"Military supplies"]
[{"$nulls":4},"Naval research"]
[{"$nulls":4},"Rope"]
[{"$nulls":4},"Ships - Equipment and supplies"]
[{"$nulls":4},"Warships"]
[{"$nulls":4},"Legislative materials."]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Batch processed record: Metadata reviewed, not verified. Some fields updated by batch processes."]
[{"$nulls":4},"FDLP item number not assigned."]