A Review on Physical and Optical Properties of Zinc Tellurite Glasses Co-doped with different rare earth ions

In this work we review the effect of physical and optical properties with different ion zinc contents of tellurite base glass. The physical properties of the glasses were evaluated and the change in density, molar volume and ionic packing density in these glasses indicates the effect of ZnO different content show on the glasses structure. The study of optical properties such as the optical band gap and refractive index of zinc tellurite glass were studied. Zinc Tellurite glasses doped with Er3+ ions were synthesized by varies researcher. The glasses were characterized by X- ray diffraction, optical absorption and photoluminescence spectra. The glassy nature of zinc Tellurite host glass has been confirmed through XRD measurements. The glasses doped or co-doped with rare-earth ions have generated much interest due to the possibility of several promising applications such as optical data storage, visible laser, fibre amplifier, optical communication and sensor devices

Graphene and its Phononics: A Review

Graphene, a unique allotrope of carbon, has garnered a huge amount of attention amongst researchers as its unique properties and promising applications in various real-life domains like in efficient batteries, solar cells, medicinal technologies, environmental remediation, circuit boards, lighting and display, and anti-corrosion has resulted in its commercial exploitation and implementation in everyday life. Since 2004 graphene has been one of the most beautiful scientific and technological achievements. The unique electronic cloud forming the bond between different carbon atoms in graphene leads to several inquisitive questions raised in the field of quantum physics. Till now graphene has been exploited for its electronic and optical properties but new research has shown that phononic properties of graphene will lead to the development of “killer” practical applications in the future. In this review article we have explored the structure, properties and the phononics of graphene with a special reference to few-layer graphene (FLG) and graphene Thermal Interface Materials (TIMs).

Vitamins E and C attenuates liver injury induced by copper nanoparticle in Rats (Rattus norvegicus)

Nanoparticles are widely used in many different fields, and production. However, the ingestion of nanoparticles from environmental pollution may have significant health impacts, which are currently poorly understood. In this study we aimed to investigate the cellular toxicity of copper nanoparticles on liver tissue of Rat, and also investigate the role of vitamin E and C, separately or together, in reducing the cellular damage that may be caused by copper nanoparticles. In this study 56 (5–6) weeks old rats with a weight of 120 ± 10 grams were divided into seven groups, treated with copper nanoparticles for four weeks, then treated with vitamins, either alone or together, for another four weeks where is control. Rats were treated with copper nanoparticles showed changes in the ultrastructure of the liver tissue, in which there was a clear decrease in the number of cellular organelles in hepatocytes. Which show small in their size, and had irregular nuclear envelopes, swelling of the mitochondria, shortening of their cristae and effects on their matrix, an increase in the size of lysosomes, an increase in the number of lipid droplets, and an expansion of the Disse spaces. The treatment with vitamins C or E or both, marked improvement was found in the size and number of organelles. The cells returned to almost their normal state. We concluded that vitamins C and E have a positive role in reducing the toxic effects of copper nanoparticles. We recommended their use in doses of 250 mg/kg/day.

A new Type of Fixed Point Theorem in a Complete Dislocated Metric Space

In this paper a fixed point theorem have been proved in dislocated metric spaces using a class of continuous function G4.

A Generalized Fixed Point Theorem in G-Metric Space

In this paper, we consider the concept of non compatible mapping as property (E.A.) in G-metric space and prove some common fixed point theorems.

Common Fixed Point Theorems in Fuzzy Metric Space

In the present paper we prove common fixed point theorem for occasionally weakly compatible mapping in fuzzy metric space. The theorem is a version of many fixed point theorem in fuzzy metric spaces, given by many authors announced in the literature.

A case study of Human iron deficiency Anaemia in different age groups from Ujjain (M.P.) India

Iron deficiency Anaemia is the most common case of nutritional Anaemia worldwide and is a public health problem in developing countries; characterized by abnormal red cell count (MCV, MCHC). Iron deficiency Anaemia associated with fatigue, skin paleness, weakness etc. The aim of the study is to determine the risk factors for iron deficiency Anaemia among population of Ujjain district (M.P.). Both male and female iron deficient patients were studied from the SS hospital and CHL applo hospitals during Jan. 2012 to Dec. 2012. A group of 6828 patients were studied for iron deficiency Anaemia in different age groups. A total of 4549 female and 2279 males were studied. Information was collected about sex, socioeconomic level. It is inferred that the percentage of anaemia is more in women compared to men.

Study of thermo-acoustical properties of Liquid mixtures of Aqueous solution of Lithium Chloride and Lithium Hydroxide at Different Temperatures

Density, viscosity and ultrasonic velocity of the various compositions of liquid mixtures of aqueous solutions of Lithium chloride (LiCl) and Lithium hydroxide (LiOH) have been experimentally measured at 303,308,313 and 318K and at atmospheric pressure. From these experimental measurements the acoustic impedance (Z) and adiabatic compressibility (ad) have been calculated. The variations in these parameters have been correlated to derive the intermolecular interactions taking place between the mixtures of present study.

Relativistic Effect of Electrons on Dust Acoustic Solitary waves in unmagnetized plasma

In this paper, we study dust acoustic solitary waves (DASW) based on the dust charge Zd =equilibrium density of ions / equilibrium density of dust ions , initial dust speed do Udo and initial streaming speed \nueo of electrons with the introduction of relativistic effect. Only rarefactive solitons are found to exist in the unmagnetized dusty plasma in presence of relativity for electrons. It is observed that for greater values of dust charge Zd rarefactive solitons exist.

Derivation of Relation between a parameter of Inverse correlation and effective Charge of X-ray absorbing K-Edge of Copper atom in it’s different Compounds

The article gives an overview of the XANES technique contribution to the analysis of multi-component catalysts. The theoretical basis of the technique, the interpretation of the energy position and intensity of XANES features, and the numerical methods developed to interpret XANES data on catalytic systems are described and discussed. XANES in the K-edge of copper in the systems. CuO, Cu(NO3)2, La2CuO4, CuCl2, and CuBr have been investigated and transitions have been assigned to the observed structures. The measurements have been used for calculating the first coordination bond distance in the above systems. It is observed that the values so determined agree fairly well with crystallographic values