IOSR-JESTFT   Volume-11 ~ Issue-3 ~ March 2017

Abstract: The aim of the study is to find the effect of the weather variable clould coverage on shunshine, rainfall, humidity and temparature for the different weather sations in Bangladesh. The monthly and yearly data for 33 years (1981- 2013) on climatic factors of 13 weather stations in Bangladesh were collected from the Bangladesh Meteorological Department. Data on cloud coverage, total rainfall, temperature, bright sunshine, and relative humidity were collected. It is observed that maximum cloud coverage occurs in the month of July for all the weather stations and it is maximun at the sylhet weather station for every month...........

KeyWords: Cloud coverage, shunshine, rainfall, humidity ,temparature, Modified regression model

[1]. Pavel Y. G., R. S. Bradley and S. Bomin (1999). The relationship of cloud cover to near-surface temperature and humidity: Comparison of GCM simulations with empirical data. Journal of Climate, 13 (11), 1858-1878.
[2]. Carole J. Hahn, Stephen G. Warren and Julius London (1995). The Effect of Moonlight on Observation of Cloud Cover at Night, and Application to Cloud Climatology.Journal of Climate 8(5), 1429-36 . DOI: 10.1175/1520-0442(1995)008.
[3]. John W.BergmanandMurryL.Salby(1996). Diurnal Variations of Cloud Cover and Their Relationship to Climatological Conditions.Journal of Climate 9(11), 2802-20 . DOI: 10.1175/1520-0442(1996)009.
[4]. Yinghui Liu and Jeffrey R. Key (2016). Assessment of Arctic Cloud Cover Anomalies in Atmospheric Reanalysis Products Using Satellite Data. American Meteorological Society, 29, 6065-83. DOI: http://dx.doi.org/10.1175/JCLI-D-15-0861.1
[5]. Qing Yue, Brian H. Kahn, Eric J. Fetzer, Mathias Schreier,Sun Wong ,Xiuhong Chen and Xianglei Huang (2016). Observation-Based Longwave Cloud Radiative Kernels Derived from the A-Train. American Meteorological Society, 29, 5840-49. DOI: http://dx.doi.org/10.1175/JCLI-D-15-0257.1

Abstract: The rising population, increasing urbanization, rapid industrialization and spread of more water intensive life styles are making water resources scarce and polluted. waste waters of various industries such as textile, petroleum, refining, plastics etc. contain phenolic compounds. (1) Due to toxicity of these compounds to aquatic organisms and humans, it is necessary that phenolic compounds are removed from contaminated water before they are discharged into any natural stream of water. In this study, the removal of phenolic contaminants was undertaken biologically by using peroxidase enzyme............

KeyWords: Hydrogen peroxide, peroxidase, Phenol, polymers

[1]. P.T. Vasudevan and L.O. Li, Peroxidase catalyzed polymerization of phenol, Appl.Biochem. Biotechnol,60,73-82, (1996)
[2]. Y.C. Lai, S.C. Lin, Application of horseradish peroxidase for removal p-chlorophenol from aqueous solution, Process Biochem,40,1167-1174, (2007)
[3]. K.Q. Wilberg, D.G. Nunes and J. Rubio. Removal of phenol by enzymatic oxidation and floatation. Braz J Chem Eng. vol 17 n 4-7 Dec 2000
[4]. Miodrag Stanisavljevic, Lidija Nedic. Removal of phenol from industrial waste water by horse radish peroxidase (Cochlearia armoracia L) FACTA UNIVERSITITATIS series: working and living environmental protection vol 2, No 4,2004, pp 345-349
[5]. Syed Mustapha, S. Akhtar, A.A. Khan and Q. Hussain, Simple and high yield procedure for stabilization of peroxidases from turnip roots, J.Science.Ind.Res., 63,540-547(2004)

Abstract: Due to its high viscosity, guava puree obtained by physical treatment cannot be used as it is for optimum juice production and needs enzymatic treatment to reduce the puree viscosity without pulp/serum separation. In the present study, guava puree was treated with various commercial enzymes in order to identify the best commercial enzyme, Klerzyme Extra. Cell walls were extracted using the sodium deoxycholate-phenol/acetic acid/water procedure and then separated into parenchyma cell walls and stone cell walls by physical and enzymatic treatment. Enzyme was applied to suspensions of parenchyma cell walls and to soluble polysaccharides extracted from guava puree.............

KeyWords: Guava,PsidiumguajavaL., Cell wall polysaccharides, Stone cells, Parenchyma cells, Klerzyme Extra

[1]. O. Marcelin, J. Mourges and A. Talmann, Les polyosides de la goyave (Psidiumguajava L.). Evolution au cours de la croissance et incidences technologiques liées à l'obtention de purées et de jus. Fruits45, 1990, 511-520.
[2]. H. P. Sharma, H. Patel and S. Sharma, Enzymatic extraction and clarification of juice from various fruits-A review. Trends in Post Harvest Technology2, 2014, 01-14.
[3]. J. E. Breeke, H. J. P. Redelinghuys and P. A. Torline, Enzyme treatment and concentration of guava pulp. ActaHort, Fruit and Vegetable for Processing194, 1986, 229-240.
[4]. I. A. G. Weinert and P. J. Van Wik, Guava puree with reduced stone cell content: preparation and characteristics of concentrates and nectars. Int J Food SciTechnol23, 1988, 501-510.
[5]. O. Marcelin, P. Williams and J. M. Brillouet, Isolation and characterisation of two main cell wall types from guava (Psidiumguajava L.) fruit. Carbohydr Res240, 1993, 233-243.