A Poor Man and His Wife (Handicapped: Mute)

Documentary on a beggar

From the direction and a thinking of

Md Alimul Islam Nayan

An art of Md Alimul Islam Nayan

ভিডিওগ্রাফি

Videography

Sir Jagadish Chandra Basu Bhaban

University of Rajshahi, Bangladesh
(3rd floor, 26-10-2019)

An art of Md Alimul Islam Nayan

A thesis titled: Control potentials of two indoor ornamental plants Epipremnum aureum (Lindane and Andre) G. S. Bunting and Aglaonema marantifolium Schott. Against three stored product pests

Author(s): Alimul Islam and Nurul Islam*

Abstract

Petroleum ether (Pet. ether), Chloroform (CHCl₃) and Methanol (CH₃OH) extracts of the test plants Epipremnum aureum (Linden & Andre) G. S. Bunting and Aglaonema marantifolium (Schott.) have been subjected to dose-mortality and repellent activity tests against three injurious pests Tribolium castaneum (Hbst.), Sitophilus oryzae (L.) and Callosobruchus chinensis (L.) to comment on the presence of toxic substance(s) in the test materials. In the dose mortality investigation, Pet. ether extract of E. aureum gave the LD₅₀ values 1.40, 1.21, 1.16, 1.10, 1.04, 0.96 and 0.84mg/cm²; Pet. ether extract of A. marantifolium gave 1.34, 1.19, 1.14, 1.12, 1.07, 1.03 and 1.02mg/cm² against T. castaneum after 6, 12, 18, 24, 30, 36 and 42h of exposure respectively. Against S. oryzae Pet. ether extract of E. aureum gave the LD₅₀ values 1.73, 1.66, 1.32, 1.08, 1.00, 0.99 and 0.90mg/cm² and the Pet. ether extract of A. marantifolium gave 1.04, 0.91, 0.87, 0.83, 0.80, 0.78 and 0.77mg/cm² after 6, 12, 18, 24, 30, 36 and 42h of exposure respectively. Against C. chinensis the Pet. ether extract of E. aureum gave LD₅₀ values 2.95, 2.02, 2.01, 1.91, 1.82, 1.72 and 1.65mg/cm²; the CH₃OH extract of A. marantifolium gave 2.34, 2.15, 1.93, 1.86, 1.83, 1.82 and 1.81mg/cm² after 6, 12, 18, 24, 30, 36 and 42h of exposure respectively. In repellency tests, the Pet. ether extract of E. aureum found significant repellent activity against T. castaneum and C. chinensis at 5% level of significance (P<0.05). The CHCl­₃ extract of E. aureum showed significant repellent activity against T. castaneum and C. chinensis at 1% level of significance (P<0.01) and at 5% level of significance (P<0.05) respectively. In addition to that, CHCl­₃ extract of A. marantifolium was found to show significant repellent activity against the adult beetles of C. chinensis at 5% level of significance (P<0.05).

A research project on Mosquito repellency tests using chemical, botanical and mechanical techniques

Author(s): Alimul Islam and Bidhan Chandra Das*

Abstract

The experiments were conducted to find out the repellent activities to control mosquitoes using chemical (camphor, CO₂ and ethanol), botanical (garlic and mint leaf) and mechanical (heat, sound frequency) techniques. In the case of camphor, the mosquitoes were not repelled. Using CO₂ and ethanol were not effective to repel mosquitoes. Garlic and mint leaves were also not effective to repel mosquitoes. The heat was not as good repellent of mosquitoes. Sound frequency did not show any repellent activity of mosquitoes. Actually, all of the procedures using chemical (camphor, CO₂ and ethanol), botanical (garlic and mint leaf) and mechanical (heat, sound frequency) techniques were not effective to control mosquitoes.