Relaxor Ferroelectric Oxides: Concept to Applications

Ferroelectric ceramic is one of the most important functional materials, which has great importance in modern technologies. A ferroelectric ceramic simultaneously exhibits dielectric, piezoelectric, ferroelectric, and pyroelectric properties. The inherent ferroelectric properties are directly related to long-range electric dipoles arrangement in the ferroelectric domains and its response to external stimuli. However, the interruption of the long-range ordering of dipoles leads to the formation of a special class of material is known as relaxor ferroelectric. It shows quite different physical properties as compared to ferroelectric (normal ferroelectric). The origin and design of relaxor ferroelectric are quite interesting for fundamental perspective along with device applications. Therefore, the origin of relaxor ferroelectric along with its fundamental understanding for possible future applications, have been explained briefly in the present chapter

Spectrum of uropathogens and their antibiotic sensitivity pattern in diabetes mellitus patients at a tertiary care hospital in Odisha, India

Background: Diabetes Mellitus is the most common endocrine disorder involving almost all systems of body. Untreated or poorly treated Diabetics are susceptible to develop a series of complications responsible for raised morbidity and mortality. Diabetes Mellitus has a number of long term effects on the Genitourinary system. Urinary tract infections have long been recognised as a significant problem in patients with Diabetes Mellitus.Methods: Prospective observational study. Diabetic patients with culture positive UTI were included. Gestational diabetes, Immunocompromised patients and patients with congenital renal anatomical abnormalities were excluded.Results: Authors included 211 numbers of culture positive UTI among diabetic patients. Out of which, 65 were male and 146 were female. Maximum number of patients belong to 56-65 years age group. Escherichia coli was the predominant organism isolated. Gram positive organisms showed 100% sensitivity to Vancomycin and Linezolid. Gram negative organisms showed 100% sensitivity to Polymyxin B.Conclusions: Genitourinary tract infection is not an infrequent complication seen in diabetes patients. Most common causative organism and their antibiotic sensitivity pattern should be done in tertiary care hospital for a better antibiotic policy

Physical properties of an Indian Ayurvedic medicine (<em>Shankh Bhasma</em>) as nano materials for its application

178-183The aim of present study is to describe Physical properties of an Indian Ayurvedic medicine (Shankh Bhasma) as nano materials for its applications. Shankh Bhasma has been synthesized by using method mentioned in an Ayurvedic text using conch shell and characterized by the modern scientific tools such as; X-ray diffractomter (XRD), Fourier Transform spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM).When we treated shankh bhasma on C. elegans and E. coli. C elegans produces more egg than normal calcium and there is no effect on E. coli. X-ray diffraction pattern and SEM analysis revealed that this Bhasma is in agglomerated nano crystalline materials and be considered as nanomedicine. An FTIR measurement reveals the bond stretching during the incineration process and found peaks of carboxylic group, Carbon with chloride and fluroide. Magnetization-Hysteresis (MH) loop study by the Vibrating sample magnetometer reveals that the di-magnetic nature of the Bhasma. Investigation of Shankh bhasma nanoparticles on C. elegen shows slightly increasing in egg production with compare to normal calcium oxide. There is not bacterial static effect was found on E.coli