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and 55.00 ± 2.13 in April (dose D 4), 68.00±3.5 and Reaction Mechanism of Formation of CaSO 4 in
63.00 ± 2.20 in May (dose D 3), 71.80 ± 2.00 and
68.50+2.60 in June (dose D 2), and 70.25 ± 3.50
and 65.70 ± 2.16 in July (dose D 3) respectively.
The month of June and the dose D 2, (2mg in first
injection and 4 mg in second injection) were found
to be the most effective for the induced spawning
of the species.
612 ZAMAN, T. (Dept. of Fisheries, Rajshahi
University, Rajshahi); BHUIYAN, A.S.; MUSA,
A.S.M. & MUSA, G.M. (Dept. of Zoology,
Rajshahi University, Rajshahi). Occurrence of
Parasites in Catla Catla (Hamilton) from
Rajshahi, Bangladesh. Bang. J. Zool., 2007, 35(2),
239-244.
An investigation was made on the occurrence of
parasites in Catla catla from different water bodies
of Rajshahi district from April 2006 to January
2007. A total of 78 specimens of C. catla was
examined during the study period and among them
60 fishes were found infected by numerous
protozoan and metazoan parasites. The total
number of collected parasites were 2420 belonging
to eight different parasitic genera. Among them six
were ectoparasites and two were endoparasites.
The ectoparasites were Trichodina, Myxobolus,
Ichthyophthirius. Dactylogyrus, Gyrodactylus,
Argulus; and the endoparasites were Eucreadtum
and Camallanus. The infestations were fluctuated
with the change of season and length size of the
hosts. The maximum abundance of parasites was
recorded in pre-winter in the month of November
and minimum in rainy season in July. In length
relation, it was observed that the abundance of
parasites were the highest in medium size and
smaller size fishes, and the lowest in larger fishes.
660 : CHEMICAL TECHNOLOGY
613 ALI, I. & ALI, M.M. (Fuel Research
Centre, PCSIR, Karachi 75280, Pakistan).
222
AFBC. Bang. J. Sci. Ind. Res., 2006, 41(3 & 4),
167-170.
Attempts have been made to investigate and
predict the reaction mechanism of formation of
calcium sulphate (CaSO 4) in Atmospheric
Fluidized Bed Combustor (AF'BC) Formation of
NO X, from nitrogen content to coal has been found
beneficial for the oxidation of sulphur dioxide to
sulphur trioxide.
614 FATIMA, B.I. & IQBAL, S. (Fuel
Research Centre, PCSIR Laboratories Complex,
Karachi-75280, Pakistan). artial Purification and
Monosaccharide Composition of Polysaccharides
of Hypnea Musciformis by GC Analysis. Bang. J.
Sci. Ind. Res., 2006, 41(3 & 4), 141-146.
Dried chopped plant of Hypnea musciformis (red
algae) was extracted with hot water and cold dilute
acid. Yield of High Molecular Weight Crude
Polysaccharide 'HMWCP' obtained by ethanol
precipitation and lyophilization were in the range
of 15-20 %. Anion exchange chromatography of
dialyzed material provided a homogenous fraction.
Acid hydrolysis and monosaccharide composition
were determined as a function of time. Separation
achieved by paper chromatography and GC
analysis as an alditol acetates showed galactose as
a predominant sugar of the polysaccharides. A
significant amount of glucose was found in crude
sample. Xylose/arabiose and some fucoses were
also detected in various proportions in crude and
partially purified fractions.
615 ISLAM, M.B. (BCSIR Laboratories,
Rajshahi). HAQUE, M.Z. & ISLAM, M.S. (Dept.
of Chemistry, Rajshahi University, Rajshahi).
Studies on Cyanex-272 Complexes of Mg (II), Ca
(II) and Fe (III). Bang. J. Sci. Ind. Res., 2007,
42(4), 475-482.