|
|
| |
| Articles
by
S. Akter |
Total Records (
2 ) for
S. Akter |
|
 |
| |
|
| |
M. Moniruzzaman
,
S. Akter
,
M.A. Islam
and
Z. Mia
|
| |
The microbiological status of water from dispensers in different roadside restaurants of Dhaka city and Savar area was analyzed in this study. Seven samples from Dhaka and 8 samples of Savar were checked. The heterotrophic plate count was in a range of 1.0x103 CFU mL-1 to 2.0x104 CFU mL-1 (from new bottles), 1.0x103 to 1.5x104 CFU mL-1 (after dispensation), and 1.5x103 CFU mL-1 to 1.0x105 CFU mL-1 (from serving glass). In several of the samples, the heterotrophic plate count was higher than the count in water from new bottle or after dispensation, suggesting added contamination from the serving glass. 80% of the samples were contaminated with total and fecal coliform bacteria, which render these waters unacceptable for human consumption. The samples were found to contain gram negative bacteria like E. coli, Shigella sp., Klebsiella sp., Enterobacter sp., Pseudomonas sp., and Salmonella sp., which are potential pathogens and thus pose a serious threat to public health. This study elucidates the importance of monitoring the bottling companies and the restaurants and put them under strict regulations to prevent future outbreak of any water borne diseases caused by consumption of dispensed water. |
|
| |
|
| |
M. Siddiqur Rahman
,
S. Akter
and
M. Al-Amin
|
| |
Physical responses of plants to change in climatic factors
like temperature, precipitation and abiotic factors like salinity intrusion
may lead positive or negative effects. Some factor may promulgate growth while
other may stunts their vigour. Present study seeks growth of a plantation species
at its early stage of life towards elevated temperature and saline water stresses.
Growth records of Swietenia macrophylla seedlings were enumerated by
measuring height, collar diameter and leaf number development of the replicates
growing at an environment-controlled plant growth chamber. One experimented
with merely elevated temperature while other tries to find results of combined
effect of elevated temperature (30, 32 and 34°C) and saline (0.5, 1.5 and
2.5 g L-1 NaCl) to said species seedlings. Seedling replicates showed
diverse response to elevated temperature and saline irrigation at height, collar
diameter and leaf number development. Results depict that elevated temperature
alone might be positive for S. macrophylla seedlings, rather most favourable
for its growth in height, however, collar diameter and leaf number may remain
unaffected. Saline treatment along with higher temperature stresses may lead
seedlings toward stunted or very low growth. As saline intensity increases,
species growth tends to decrease proportionally. Elevated temperature aided
with higher salinity may direct further under development of S. macrophylla
seedlings which is distressing to plantation establishment of this species in
sites which are vulnerable to salinity intrusion due to climate change. However,
S. macrophylla may be a promising plantation species in drier part of
the globe in near future. |
|
|
|
|
| |
|
