автор: Darren Abbott

This book is a compilation of CRS reports on the Temporary Assistance for Needy Families (TANF) block grant in the United States. TANF was formed in the Personal Responsibility and Work Opportunity R …

Piezoelectricity is the ability of certain crystalline materials to develop an electric charge proportional to a mechanical stress. Since its discovery, the piezoelectricity effect has found many use …