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Articles by A.H. Khan
Total Records ( 6 ) for A.H. Khan
  R. H. Rahman , N. Nowsheen , M. A. Khan and A.H. Khan
  Finding the location of a mobile phone is one of the crucial challenges in modern telecommunication system. This study proposes a solution of locating a mobile phone on a city map using SMS (Short Message Service). This study intends to help mobile phone users to find out his/her location on a geographical map. The proposed method is GPS-free and it requires no additional technology to be added to existing mobile phones. It uses well-established algorithms to locate a mobile phone on a geographical map and then sends the position-on-a-map to the user mobile by an SMS.
  M. Harunur Rashid , A.H. Khan , M.A. Quddus , N.E. Elahi and A. Saha
  The experiment was conducted to evaluate the modern photosensitive rice varieties, BR22, BR23, Binasail and an advanced line BR5226-6-3-3 and widely cultivated local variety Telosh for increasing the productivity of medium high land phase-2. BR5226-6-3-3 gave the highest grain yield of 4.14 t ha-1 followed by BR23 (3.96 t ha-1). The higher grain yields of BR5226-6-3-3 and BR23 were associated with higher number of filled grains panicle-1 and heavier grain weight. Economic analysis indicated that cultivation of BR5226-6-3-3 and BR23 after Boro rice gave about 36 and 31% additional gross margins than the existing local variety, Telosh.
  Md. Abul Kalam Azad , M.M. Alamgir Sayeed , S.M. Golam Kabir , A.H. Khan and S.M. Badier Rahman
  A study on the physical properties of jute:cotton blended curtain (60:40, 50:50 and 40:60) and 100% cotton curtain is performed in this work. Among the three types of blended curtains it is observed that weight/sq. m of 50:50 blended curtain is nearer to the weight/sq. m of 100% cotton curtain. The warp wise strength of blended curtain is very nearer to the 100% cotton curtain before washing. After washing the strength of blended curtain decreased a less than the 100% cotton curtain. The bending length of 50:50 blended curtain is also satisfactory and comparable to 100% cotton curtain after single washing.
  Md. Abul Kalam Azad , A.H. Khan and S.M. Bader Rahman
  A study was performed on the properties of different types of jute-cotton blended yarn and 100% cotton yarn. The jute-cotton blend ratios of each category of yarn (10s, 15s and 20s) were 80: 20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80 and 10:90, respectively. For each individual count of yarn, it was observed from the test result that the properties of 50:50/jute:cotton blended yarn showed very nearer property to the 100% cotton yarn. For coarse count (10s), 80:20/jute:cotton showed very closer property to the 50:50/jute:cotton blended yarn. It was also observed that for each type of yarns, which showed decreasing property with the increase of jute in the blend. So, blend ratio has also important effect on the yarn properties.
  Amina Khatun , M.I.U. Mollah , M.H. Rashid , M.S. Islam and A.H. Khan
  An experiment was carried out at the net house of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh using four seedling ages - 30, 45, 60 and 75 days, for transplant rice during July to November 1995 in transplant Aman (T. Aman) season and during November 1995 to May 1996 in Boro season. The highest grain yield was obtained from 45-days old seedlings in both seasons. Regression models prepared for T. Aman and Boro seasons separately could explain the yield variations 77.1% and 68%, respectively due to seedling age.
  I.H. Bukhari , M. Arif , J. Akbar and A.H. Khan
  Transition metals (Mn (II), Co (II), Ni (II), Cu (II) and Zn (II)), complexes of Schiff base derived from Cephradine and Salicylaldehyde were prepared and characterized by elemental analysis, conductance, magnetic moments and spectroscopic data. In these complexes an amino group available in the Cephradine was allowed to react with Salicylaldehyde to obtain Schiff base and which then subsequently reacted with Transition metals. Schiff base was derived from condensation of salicylaldehyde and cephradine in equimolar quantities (1:1). Ligand chelates through OH and -C=N- functional group of the Schiff base. The complexes were formulated as ML2 (1:2) type. All the complexes were found to be six-coordinate dihydrates. The geometry of the complexes appears to be simple octahedral. All the compounds under investigation possess somewhat antibacterial activity. The antibacterial activity showed the following trend; Transition metal complexes > Schiff base ligand > Parent drug
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