ISSN No.
2395-3306
(Online)
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 Volume  1 / Issue 1 / March 2015   (pp 1-54)
Ionic Liquid Mediated Synthesis of ZnO Microspheres via Hydrothermal Method Lipeeka Rout, Aniket Kumar, Basanti Ekka, Chinmayee Priyadarshini, Priyabrat Dash*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 1-5  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 Metal oxide microspheres have potential applications in various fields. In this work, zinc oxide microspheres were synthesized using 1-butyl 3-methyl imidazolium hexaflourophosphate(BMIMPF6)ionic liquid as a medium via a hydrothermal method. The morphology and structure of the samples were characterized by UV-Vis spectroscopy, FTIR, X-ray diffraction (XRD), photoluminescence spectroscopy and Scanning electron microscopy (SEM). Results revealed the formation of spherical morphology which confirms the formation of ZnO microspheres. The room temperature photoluminescence (PL) spectra showed broad and strong visible emission spectra. 

Application of coupling reagents in Amide bond formation Swayansiddha Tripathy*, Viswajanani j Sattigeri, S.K.Sahu*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 6-9  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 Amide bond is essential to sustain life, making up the peptide bonds in proteins, such as enzymes, and it is also one of the most prolific moieties in pharmaceutical molecules, agrochemicals and natural products. A key step in peptide production is the formation of the peptide bond, which involves amide bond formation. This requires the activation of a carboxylic acid, which is usually carried out by using peptide coupling reagent. The synthetic strategy adopted was the coupling of appropriately protected amino acids with carboxylic acid derivatives. Structures of newly synthesized compounds were confirmed by 1H NMR, LCMS and IR spectral analysis.

Extraction of La(III) from Nitric acid media using PC88A and Cyanex 921 in kerosene Sagarika Acharya, Nandita Panda, Sujata Mishra*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 10-12  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 The solvent extraction of La (III) from nitric acid medium using acidic organophosphorous  extractant (PC88A) and neutral extractant (Cyanex 921) in kerosene was studied. The effect of various parameters like equilibration time, nitric acid concentration and extractant concentration on the extraction behavior of La (III) has been investigated. The percentage extraction of metal decreased with increase of acid concentration. With binary mixture of and PC88A  and Cyanex 921 , the extraction of 0.001 M La (III) from 0.001M HNO3, the extraction was maximum (47.4%) when Cyanex 921 concentration was increased from 0.01M to 0.1M.

Assessment of Radon and Gamma Radiation levels in Tummalapalle Uranium Mine B. K. Rana*, M. R. Dhumale, P. M. Ravi, R. M. Tripathi
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 13-17  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 In uranium mine during the work, miners are exposed to internal and external radiation exposure. Radon and its short lived daughters is main causative agent responsible for internal exposure. The gamma emitting radionuclides of uranium decay chain present in the rock contribute towards external exposure. During the mining activities, measurement of radon concentration in a uranium mine is essential to understand the degree of ventilation required for different working faces and to minimize the internal exposure to the miners. Further, gamma radiation measurement is carried out to assess the external dose received to the miners and based on their nature of work in mine, minimization of dose and occupancy period could be decided. Radon concentration and gamma radiation levels were monitored fortnightly in different galleries of Tummalapalle mine during the year, 2014. The overall equilibrium equivalent radon (EER) concentration ranged from 0.05 to 1.38 kBq m-3 with an arithmetic mean of 0.63 ± 0.30 kBq m-3 and the overall gamma absorbed dose rate ranged from 0.08-4.85 µGyh-1 with an arithmetic mean of 1.54 µGyh-1±0.61 µGyh-1, respectively. Most of the measurements of radon and all values of gamma radiation levels were found to be well below the prescribed regulatory limits.

A Study on Soil Fertility Status of Some Villages in Nimapara block of East and South-Eastern Coastal plain agroclimatic zone of Odisha Swagatika Satpathy, Antaryami Mishra, Subhasis Saren and Baman Prasad Acharya*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 18-23  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 The soil samples  were  analyzed  in the laboratory  and soil fertility status were prepared for soil texture, soil reaction, organic carbon, available ‘N’, available  ‘P’, available ‘K’ and available ‘S’, for identifying the soil nutrient status of the villages. The organic carbon content of all the three villages (Rench, Sainsa and Balanga) of Nimapara block under study area varies from  low to very high with a mean value varying from 0.35% to 0.86% and are good enough for crop production whereas in Balanga village the organic carbon content is found to be higher than other two villages. The available N content of all the three villages are found to be low and is in positive co-relation with the organic carbon content of the lands. The available P content of all soils in all the three villages is high in low land soils because of higher content of Organic Carbon in the low land as phosphorus is released from the organic matter in a slow process by actively of micro organisms. The available K content of all the soils of all villages are high because of higher content of clay in the soil. The available S content is found to be comparatively higher in the low land soils of all the 3 villages under study because of comparatively higher clay content. The above investigation focus for the balanced recommendation of fertilizers to various crops which will help in increasing the productivity of food grains, pulses, oil seeds, vegetables, fruits and fiber crops grown in that area.

Effect of Silica and Titania ternary hybrid on the mechanical, thermal and optical behavior of the Polyimide Bikash Kumar Dash*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 24-31  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 Polyimide/silica/titania hybrid films were prepared via sol-gel process. Poly(amic acid) solutions were prepared by mixing pyromellitic dianhydride (PMDA),4,4’oxy dianiline(ODA)and N,N-dimethyl acetamide(DMAc) solvent through in situ polymerization method. Silicic acid and titanium tetrachloride are the respective precursors used for the silica and titania. The absorption band of Si-O-Ti bonds in FTIR spectra of the hybrid films revealed the formation of hybrid inorganic network between silica and titania. The glass transition temperatures of the hybrid samples were higher than pure polyimide. Scanning Electron Microscopy (SEM) results indicated the formation and dispersion of nanometer scale size of inorganic domains inside the polyimide matrix due to the introduction of silica stabilized TiO2 and the interactions between organic and inorganic phases .The studies on the optical properties of the hybrid films indicate red shift of the absorption band that increased with increased TiO2 content. The pretty thermal stability and tunable optical properties may provide the potential applications of the polyimide-silica-titania hybrid films in optical devices.

 

Evaluation of Ambient and Source Noise in a Charge Chrome Plant Aditya Kishore Dash*, Abhijit Samantray, Abanti Pradhan
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 32-37  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 In the present study, an attempt has been made to monitor the ambient and source noise in a Charge Chrome Plant, Odisha. For the purpose, eight numbers of stations were chosen (four ambient noise monitoring stations and four source noise monitoring stations). The monitoring was done for a period of four months (January, February, March and April, 2014). At Station-1(Product Processing Yard) the noise level during day time is within the prescribed limit of 75 dBA. However, during night time, it was little higher (70.7 dBA) against the standard value of 70 dBA. At Station-2 (Main Gate) during day time the noise levels are within the prescribed limit of 75 dBA and the night time it is also within the prescribed limit of 70 dBA. At Station-3 (Weigh Bridge near Bottom of ESP and Ash Silo) day time and night time noise level are within the prescribed limit. At Station-4 (South East Direction of Coal Crusher House) day time and night time noise level are within the prescribed limit. The source noise monitoring was also carried out at four different stations. It was observed that, except in station-5(Near Furnace Casting Bay), in all other stations the source noise level is within the limit. Further, it was observed that, with increase in distance from the source up to 100 m, there is a considerable decrease in noise level about 60.5% at furnace casting bay, 52% near briquetting plant, 54% near boiler house and 52% near coal crusher room.                                                                             

Determination of Partial Molar Properties of Amino Acids in Aqueous Methanol Solutions at Different Temperatures Smruti Pattnaik* and Upendra Nath Dash
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 38-43  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 Density (d) values of amino acids have been measured at 298.15, 303.15, 308.15, and 313.15K in three different wt.%(5,10,and15 wt. %) of aqueous methanol solution. Partial molar properties of amino acids e.g., apparent  molar volume (VΦ), limiting apparent molar volume (VΦ⁰), apparent molar expansibility (EΦ), and limiting apparent molar expansibility  (E⁰Φ) have been evaluated in these solutions from the density data. The ultrasonic velocity (U) values in these solutions have been measured at 298.15K only. Acoustical parameters such as isentropic compressibility (Ks), apparent molar compressibility, (Ks,Φ) and solvation number (Sn) have been computed  for these solutions from the values of ultrasonic velocity. The results are discussed in the light of molecular interactions in the solutions.

 

Thermo-optical Behavior of Liquid Crystalline Polyesters Malabika Talukdar*
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 44-47  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0
 Liquid crystals are highly anisotropic fluids that exist between the boundaries of solid and conventional isotropic liquid phase. Within certain ranges of temperature, in melts or in solutions, some organic substances are solid in terms of flow; the other fluid aspects to their physical states still exist. This dualism of physical properties of liquid crystal polymers results in an unusual combination of mechanical, thermal and chemical properties. Polarizing microscope is widely used for studying the morphology of liquid crystals during their phase transitions. The measurement of transmission of polarized light through a sample of polymer by a polarizing microscope fitted with a hot-stage is known to be a useful technique for investigating the microstructure and crystalline behavior of semicrystalline polymers.

Excess molar volumes and Excess Gibbs energies of activation of flow of Ternary liquid mixtures of DEHPA, Benzene and O-Xylene N.Swain*, S.K. Singh, D. Panda and U.N. Dash
Int. J. Chem. Pharm. Rev. Res., 2015, 1(1), pp 48-54  •  Abstract  •  Fulltext    •   Citations: 0    •   Article Views: 0

The excess molar volume, apparent viscosity and the excess Gibbs energy of activation of flow have been calculated from the density and viscosity measurements of ternary mixtures of di-(2-ethylhexyl) phosphoric acid (DEHPA), benzene and o-xylene and are presented as functions of composition. The calculated excess quantities have been discussed in terms of the nature of ternary interactions.

 

 
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