Employing Crystal Engineering Principles to Fabricate Zero to Three-Dimensional 4f-based Metal Aggregates using O-Donor Ligands

Employing Crystal Engineering Principles to Fabricate Zero to Three-Dimensional 4f-based Metal Aggregates using O-Donor Ligands

Author: Zeeshan Majeed

Publisher: Cuvillier Verlag

ISBN: 9783736943520

Category: Science

Page: 226

View: 910

Interest in lanthanide (Ln) coordination chemistry has increased significantly over the past few years, in particular as a result of their intriguing spectral and magnetic properties. LnIII ions are “hard acids” and generally prefer to coordinate with “hard bases” such as O- and F-donor ligands. Their coordination geometries are usually determined by ligand steric factors rather than crystal field effects. The research described in this dissertation mainly focuses on the interaction of LnIII ions with O-donor ligands such as carboxylates and polyols, while aiming to synthesize Ln-based polynuclear coordination compounds having interesting magnetic properties. Moreover, investigation of the influence of ligand back-bone on the magneto-structural properties of the resulting compounds was explored. Consequently some novel and efficient one-pot synthetic methodologies have been successfully developed to prepare Ln-based polynuclear clusters as well as networks of various dimensionalities, displaying exciting magnetic properties. Also correlations between structural parameters and magnetic properties have been established. The resulting compounds were characterized in detail using analytical methods like FT-IR, elemental analysis, single crystal XRD, powder XRD, and magnetic SQUID measurements. The first approach, based upon a systematic study of Ln-carboxylate chemistry, has led to the isolation of two 1D chains possessing single chain magnet (SCM) properties, a 2D honeycomb network, two chiral metal-organic frameworks (MOFs) and one porous MOF showing slow relaxation of the magnetisation. This study has increased the understanding of the self-assembly processes of LnIII ions under the influence of various aliphatic as well as aromatic carboxylate ligands. The second approach relies upon introducing an additional polyol ligand into the Lncarboxylate system, in order to investigate further the magneto-structural variations of the binary ligand system. This led to a variety of discrete molecular clusters ranging in nuclearity from 3 to 26, exhibiting SMM behavior. In addition to this, two 1D polymers with the highest energy barriers to reversal of the magnetization found for 4f-based single chain magnets reported so far and a 2D honeycomb network showing slow relaxation of its magnetization have been characterized. The third approach aimed to incorporate an additional metal ion, such as MnII, into the Ln-polyol-carboxylate system, thereby synthesizing heterometallic complexes with interesting magnetic properties. This resulted in a series of mixed-valent heterometallic decanuclear clusters exhibiting SMM behavior. Finally, the organic polyol ligand was replaced with a purely inorganic polyoxometalate anion, in order to synthesize some organic/inorganic hybrid materials with novel magnetic properties. This resulted in a series of polynuclear aggregates some of which show SMM behavior.

The Zero to Three Child Care Anthology, 1984-1992

The Zero to Three Child Care Anthology, 1984-1992

Author: Sally Provence

Publisher:

ISBN: UOM:39015041283543

Category: Child care

Page: 141

View: 106

This anthology contains 19 articles selected from the "Zero To Three Bulletin" from 1984 through the spring of 1992 and organized into five sections. The section on relationships in infant/toddler child care includes: "Infants in Day Care: Reflections on Experiences, Expectations, and Relationships," by J. H. Pawl; and "Choosing Child Care for Infants and Toddlers: Look First at the Caregiver," by S. Provence. Articles on applying principles to practice include: "Caring for Infants with Respect: The RIE Approach," by M. Gerber; "Mainstreamed, Mixed-Age Groups of Infants and Toddlers at the Bank Street Family Center," by N. Balaban; "The Center for Infants and Parents at Teachers College, Columbia University: A Setting for Study and Support," by A. Axtmann; and "Therapeutic Childcare at Merrywood School," by M. Siegel. The section on child care for infants and toddlers with special needs includes: "'The Sooner the Better Project': Involving Parents and Day Care Staff in the Identification and Treatment of Developmental Delays and Disturbances in Infants and Toddlers," by R. Clark and M. J. Oltmans; "Models of Integration through Early Intervention/Child Care Collaborations," by M. B. Bruder, P. Deiner, and S. Sachs; and "Social Development and Integration: Facilitating the Prosocial Development of Typical and Exceptional Infants and Toddlers in Group Settings," by D. Wittmer and S. Petersen. Articles on supports for child care programs and providers include: (1) "Attending to the Emotional Well-Being of Children, Families, and Caregivers: Contributions of Infant Mental Health Specialists to Child Care," by K. Johnston and others; (2) "Whole Babies, Parents, and Pieces of Funds: Creating Comprehensive Programs for Infants and Toddlers," by P. D. Pizzo; (3) "The Developmentally Designed Group Care Setting: A Supportive Environment for Infants, Toddlers and Caregivers," by L. Torelli; (4) "Shared Reading in Daycare: Successes and Challenges," by G. J. Whitehurst and J. E. Fischel; and (5) "Managing Growth at Child Care Solutions," by R. A. Foote. The section on research in infant/toddler child care includes: "More Pride, Less Delinquency: Findings from the Ten-Year Follow-Up Study of the Syracuse University Family Development Research Program," by J. R. Lally and others; "Model Versus Modal Child Care for Children from Low-Income Families," by D. S. Wittmer; "Infant Day Care: A Cause for Concern?" by J. Belsky; "Responses to 'Infant Day Care: A Cause for Concern?'" (responses by eight authors); and "Infants, Families and Child Care: Toward a Research Agenda," a report from a meeting of infant day care researchers. (SLD)

The SAGE Encyclopedia of Contemporary Early Childhood Education

The SAGE Encyclopedia of Contemporary Early Childhood Education

Author: Donna Couchenour

Publisher: SAGE Publications

ISBN: 9781506353173

Category: Education

Page: 3481

View: 722

The general public often views early childhood education as either simply “babysitting” or as preparation for later learning. Of course, both viewpoints are simplistic. Deep understanding of child development, best educational practices based on development, emergent curriculum, cultural competence and applications of family systems are necessary for high-quality early education. Highly effective early childhood education is rare in that it requires collaboration and transitions among a variety of systems for children from birth through eight years of age. The SAGE Encyclopedia of Contemporary Early Childhood Education presents in three comprehensive volumes advanced research, accurate practical applications of research, historical foundations and key facts from the field of contemporary early childhood education. Through approximately 425 entries, this work includes all areas of child development – physical, cognitive, language, social, emotional, aesthetic – as well as comprehensive review of best educational practices with young children, effective preparation for early childhood professionals and policy making practices, and addresses such questions as: · How is the field of early childhood education defined? · What are the roots of this field of study? · How is the history of early childhood education similar to yet different from the study of public education? · What are the major influences on understandings of best practices in early childhood education?

Handbook of Early Childhood Intervention

Handbook of Early Childhood Intervention

Author: Jack P. Shonkoff

Publisher: Cambridge University Press

ISBN: 9781316583845

Category: Psychology

Page:

View: 926

Eighteen new chapters have been added to the 2000 edition of this valuable Handbook, which serves as a core text for students and experienced professionals who are interested in the health and well being of young children. It serves as a comprehensive reference for graduate students, advanced trainees, service providers, and policy makers in such diverse fields as child care, early childhood education, child health, and early intervention programs for children with developmental disabilities and children in high risk environments. This book will be of interest to a broad range of disciplines including psychology, child development, early childhood education, social work, pediatrics, nursing, child psychiatry, physical and occupational therapy, speech and language pathology, and social policy. A scholarly overview of the underlying knowledge base and practice of early childhood intervention, it is unique in its balance between breadth and depth and its integration of the multiple dimensions of the field.

ADHD and Fetal Alcohol Spectrum Disorders (FASD)

ADHD and Fetal Alcohol Spectrum Disorders (FASD)

Author: Kieran D. O'Malley

Publisher: Nova Publishers

ISBN: 1594545731

Category: Medical

Page: 282

View: 623

This multi-author book will discuss the history and clinical presentation of Foetal Alcohol Spectrum Disorders(FASD) i.e Fetal Alcohol Syndrome (FAS) and Alcohol Related Neurodevelopmental Disorder (ARND). These developmental neuropsychiatric disorders result from prenatal exposure to alcohol during any gestational period of pregnancy. The book will particularly address the co-occurring presence of ADHD in patients with FASD. ADHD is the most frequent neuropsychiatric presentation of FASD throughout the lifespan and it is particularly difficult to manage because the underlying pathophysiology is related to prenatal neurotoxic brain injury. Although prenatal alcohol exposure , and the resulting FASD, is recognised as the commonest preventable cause of intellectual disability, many clinicians and educators are not aware that 75 to 80% of the patients with FASD have I.Q.s over 70. Thus, the neuropsychiatric presentation of FASD can often be unrecognised or misunderstood. FASD are the true clinical ' masqueraders' and ADHD is their most likely disguise! The authors are all experienced professionals from a wide range of disciplines working throughout the USA and Canada. They have been involved in the diagnosis, research and management of FASD for many years and this book will bring their collective knowledge regarding management from infancy to adulthood to an inter-professional audience.

Clinical Work with Traumatized Young Children

Clinical Work with Traumatized Young Children

Author: Joy D. Osofsky

Publisher: Guilford Press

ISBN: 9781609182083

Category: Psychology

Page: 364

View: 580

Presenting crucial knowledge and state-of-the-art treatment approaches for working with young children affected by trauma, this book is an essential resource for mental health professionals and child welfare advocates. Readers gain an understanding of how trauma affects the developing brain, the impact on attachment processes, and how to provide effective help to young children and their families from diverse backgrounds. Top experts in the field cover key evidence-based treatments--including child-parent psychotherapy, attachment-based treatments, and relational interventions--as well as interventions in pediatric, legal, and community settings. Special sections give in-depth attention to deployment-related trauma in military families and the needs of children of substance-abusing parents.

Handbook of Infant Mental Health, Fourth Edition

Handbook of Infant Mental Health, Fourth Edition

Author: Charles H. Zeanah

Publisher: Guilford Publications

ISBN: 9781462537105

Category: Medical

Page: 697

View: 580

This completely revised and updated edition reflects tremendous advances in theory, research and practice that have taken place over the past decade. Grounded in a relational view of infancy, the volume offers a broad interdisciplinary analysis of the developmental, clinical and social aspects of mental health from birth to age three.

Applied Statistics for the Social and Health Sciences

Applied Statistics for the Social and Health Sciences

Author: Rachel A. Gordon

Publisher: Routledge

ISBN: 9781136484179

Category: Social Science

Page: 994

View: 698

Applied Statistics for the Social and Health Sciences provides graduate students in the social and health sciences with the basic skills that they need to estimate, interpret, present, and publish statistical models using contemporary standards. The book targets the social and health science branches such as human development, public health, sociology, psychology, education, and social work in which students bring a wide range of mathematical skills and have a wide range of methodological affinities. For these students, a successful course in statistics will not only offer statistical content but will also help them develop an appreciation for how statistical techniques might answer some of the research questions of interest to them. This book is for use in a two-semester graduate course sequence covering basic univariate and bivariate statistics and regression models for nominal and ordinal outcomes, in addition to covering ordinary least squares regression. Key features of the book include: interweaving the teaching of statistical concepts with examples developed for the course from publicly-available social science data or drawn from the literature thorough integration of teaching statistical theory with teaching data processing and analysis teaching of both SAS and Stata "side-by-side" and use of chapter exercises in which students practice programming and interpretation on the same data set and course exercises in which students can choose their own research questions and data set. This book is for a two-semester course. For a one-semester course, see http://www.routledge.com/9780415991544/