IOSR-JAP   Volume-6 ~ Issue-4 ~ July-August 2014

ABSTRACT: Hematological parameters are repeatedly used as an essential tool to assess the health condition of fish. The purpose of this study was to assess the reference values of some hematological parameters of Catla, catla catla collected from fresh water pond in a tropical climate of India from July 2011 to 2013. Variation in hematological parameters such as hemoglobin, erythrocyte count, total leucocytes count, hematocrit, mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC) of fish were compared according to sex and seasonal differences. Analysis of variance showed that there were significant differences between sexes and the results indicated that the blood parameter levels between the sexes in summer were significantly different than that measure in other seasons except mean corpuscular hemoglobin(MCH) and (MCHC) value (P <0.05). The number of total leukocyte levels was found to be higher in female fish especially in breeding seasons, but the levels of hemoglobin, hematocrit and MCV values were high in male fish in an annual period. However, there was no difference in MCH and MCHC values between the sexes and seasons throughout the study period. These may be related to the seasons of sampling and changing physiological cycles during these months. The correlation between measured hematological parameters was also determined.

Key words: Seasonal Variations- Hematology-Catla catla Reference Values,

[1]. Adebayo OT, Fagbenro OA, Ajayi CB, Popoola OM(2007) Normal haematological profile of Parachanna obscura as a dignostic tool in aquaculture. Int. J.Zool Res 3:193-199
[2]. Anderson D, Klontz GW (1965) Basic hematology for the fish culturist, Ann North Fish cul Conf. 16:38-41
[3]. Anver CE (2004) Blood Chemistry (electrolytes, lipoprotein and enzymes) values of black scorpion fish (Scorpacnaporcus, 1758) in the Dardnelles Turkey J. Biol Sci 4:716-719
[4]. Bhaskar BR, Rao KS (1985). Some hematological parameters of tarpon, Megalops Cyprinoils (Broussenet) from Visakhapatnam harbor, Masty 11:63-69
[5]. Bhaskar BR, Rao KS (1990) Use of hematological parameters as diagnostic tools in determining the health of milk fish. Chanos chanos (Forskal), in brackish water culture. Aquacul Fish Mang 21:125-129
[6]. Casillas E, Smith LS (1977) Effect of stress on blood coagulation and hematology in rainbow torut (Salma grindneri). J.Fish Biol 10:481-491

ABSTRACT: Praseodymium and yttrium in equal compositions was doped in lead titanate having general formula Pb1-xPrxTi1-yYyO3 where x (praseodymium) = y (yttrium) = 0.02, 0.04, 0.06 and 0.08. These four compositions were synthesized by solid state reaction technique. X-ray diffraction analysis confirms single phase formation with perovskite structure having tetragonal phase. Microstructural analysis shows formation of dense microstructure with grain size in the range of 0.38 – 0.54μm. Dielectric behavior as a function of temperature gave the value of Curie temperature. The diffusivity in the dielectric behavior was observed in three different compositions. Piezoelectric coefficient d33 showed an increasing trend with increase in compositions of the substituent. The ferroelectric properties were studied at room temperature as a function of composition. The value of remnant polarization (Pr), spontaneous polarization (Ps) and coercive field was determined.

Keywords: Ceramics, Dielectric, Ferroelectric, Lead titanate, Solid State Reaction

[1]. T. Takahashi, Lead titanate ceramics with large piezoelectric anisotropy and their applications, Ceram. Bull. 69 (4) (1990) 691-695
[2]. K. Hashimoto, T. Tsurutra, Morinaka, N. Yoshiik, High performance human information sensor, Sensors and Actuators 79 (2000) 46-52
[3]. Y. Yamashita, K. Yokoyama, H. Honda, T. Takahashi, (Pb, Ca) ((Co1/2W1/2), Ti) O3 piezoelectric ceramics and their applications, Jpn. J. Appl. Phys. 20 (1981) 183-187
[4]. [J. Shenglin, Z. Xuili, W. Xiaozhen, W. Xianghong, Investigation on anisotropy in piezoelectric properties of modified PbTiO3 ceramics, Piezoelectr Acoust. 17 (1995) 26-29
[5]. K. Okazaki, K. Takahashi, Memo. National Defense Acad. 5 (1997) 183

ABSTRACT: Os supranaviculare or Pirie's bone is located on the dorsal aspect of the talonavicular joint at midpoint of foot. This rare incidental skeletal variant when symptomatic often misdiagnosed as avulsion fracture of navicular or talar head. We report a rare case of symptomatic os supranaviculare in a 27 year old football player who had fall from bike in recent past presented with dorsal foot pain and swelling since 4 months. Magnetic resonance imaging findings in right foot illustrated well corticated ossicle dorsal to talonavicular joint with surrounding soft tissue swelling. Brief discussion on differentiating it from avulsion fracture, differential diagnosis of dorsal foot pain and treatment options was made in our case report.

Key Words: Dorsal foot pain, Os supranaviculare, Pirie bone, Football player

[1]. Mellado JM, Ramos A, Salvadó E, Camins A, Danús M. Accessory ossicles and sesamoid bones of the ankle and foot: imaging findings, clinical significance and differential diagnosis. European Radiology 2003 13: L164-L177.
[2]. Sarrafian SK. Osteology. In: Sarrafian SK (ed). Anatomy of the foot and ankle. 2nd edition. Philadelphia: Lippincott; 1993: P 89–112.
[3]. Coskun N, Yuksel M, Cevener M, Arican RY, Ozdemir H, Bircan O. Incidence of accessory ossicles and sesamoid bones in the feet: a radiographic study of the Turkish subjects. Surg Radiol Anatomy 2009.31:19-24.
[4]. Cilli F, Akcaoglu M. The incidence of accessory bones of the foot and their clinical significance. Acta Orthopaedica et Traumatologica Turcica 2005. 39: 243–246.
[5]. Brigido MK, Fessell DP, Jacobson JA, Wildman DS, Craig JG, Jamadar DA. Radiography and US of os peroneum fractures and associated peroneal tendon injuries: initial experience. Radiology 2005. P.235–241.

ABSTRACT: Nickel Oxide doped silica glass with nominal composition (Sio2)1-x:(Nio)x (mol%) is prepared using the sol–gel method. and characterized by various analytical technique. The structure has been examined using X-ray diffraction (XRD) and show average grin size of the Nio nanoparticles 5.55 nm to 9.04. Fourier transform infrared spectroscopy (FT-IR), scanning electronic microscopy (SEM). Transmission electron(TEM) average nanoparticles size (1.44–7.92 nm). . Measurements of the a.c. conductivities and dielectric constant, with frequency, respectively, for nano glasses:(SiO2)1-x : (NiO)x have been made on the glassy system, , in the temperature range 300-500 K and in the frequency range 100 Hz to 100 kHz. we have found. The a.c. conductivity increase with increase frequency .UV-visible measurements found the optical band gap (Eg) approx 0.49 ev. The coercivity values Hc ,the magnetization Ms and the remanence values Mr and the reduced remanence Mr/Ms obtained from the hysteresis loops From these data, it was found that the saturation magnetization for Nio increases, while the coercive field values decrease, by increasing Nio content.

Key words: Nanocomposite , nickel oxide, optical properties, dielecrtic

[1]. S.-P. Szu, C.-Y. Lin / Materials Chemistry and Physics 82 (2003) 295–300
[2]. A.P. Alivisatos, Science 271, 933, 1996
[3]. D. Niznansky, N. Viart, J.L. Rehspringer, J. Sol–GelSci. Technol. 8, 615, 1997
[4]. R. Pool, Science, 248, 1186, 1990
[5]. A. Hasselbarth, A. Eychmuller, H. Weller, Chem. Phys.Lett. 203, 271, 1993
[6]. NSTI-Nanotech 2004, www.nsti.org, ISBN 0-9728422-9-2 Vol. 3, 2004
[7] M. Ra˘ ileanu et al. / Journal of Non-Crystalline Solids 354 (2008) 624–631