imran fakhar, bohari m yamin and siti aishah hasbullah.  (2016).  synthesis and characterization of bis-thiourea having amino acid derivatives.  - the 2016 fst ukm postgraduate colloquium. aip publishing.  1-7. 

fatin ilyani nasir, douglas philip, siti aishah hasbullah, nurul izzaty hassan.  (2015).  developing a novel catalytic approach for imine formation by using self-replicating catalyst.  - the 2015 ukm fst postgraduate colloquium.  1-6. 

suhaila sapari, bohari m. yamin, aishah hasbullah, and nazlina ibrahim.  (2014).  synthesis, characterization and antibacterial studies of 2-chloro-5-fluoro-n-(dibenzyl carbamothioyl) benzamide thiourea.  - aip conference proceeding - the 2014 ukm fst postgraduate colloquium.  497-500. 

amalina ahmad; sharina abu hanifah; siti aishah hasbullah; khairi suhud; norhadisah mohd zaini; lee yook heng.  (2014).  phosphate sensor based on immobilized aluminium-morin in poly (glycidyl methacrylate) microspheres.  - aip conference proceedings, selangor.  486-491. 

chong, d.j.w., latip, j., hasbullah, s.a. and sastrohamidjojo, h..  (2014).  selective oxidation of rhodinol to citral using h 2 o 2 -platinum black system under microwave irradiation.  - aip conference proceedings - the 2014 ukm fst postgraduate colloquium.  410-413. 

atisya rohadi, azwani mat lazim and siti aishah hasbullah.  (2013).  the antioxidant effect of derivatives pyroglutamic lactam.  - aip conference proceeding-ukm fst postgraduate colloqium.  . 

rumaisa nordin, azwani mat lazim and siti aishah hasbullah.  (2013).  spectral and photochromic study of spiropyran.  - aip conference proceeding-ukm fst postgraduate colloqium.  .