Science Letters

Science Letters is a double-blind peer-reviewed, open-access, and biannually online-published (January and June) international journal for the complete coverage of all topics in science and technology-related areas. Science Letters aims to be recognized as an important forum for researchers from academic and private arenas to exchange the latest results from research especially in science and technology in a broad sense, both original papers and reviews.

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 1.

Adsorption of Lead (II) From Aqueous Solution by Using Modified and Unmodified Banana Peels 

Nurul Asfa Hadira Abdul Halek¹, Siti Kartina Abdul Karim^1* and Nurain Johar²

 ¹Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Cawangan Sarawak, Kampus Samarahan 2, 94300 Kota Samarahan, Sarawak, Malaysia

²Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Cawangan Sarawak, Kampus Mukah, 96400 Mukah, Sarawak, Malaysia

DOI: 10.24191/sl.v17i1.18178

 2.

Review of Issues and Challenges in the Growing Use of Herbal-Based Products 

Salini Devi Rajendran¹ and Nitty Hirawaty Kamarulzaman²

¹School of Food Studies and Gastronomy, Faculty of Social Sciences & Leisure Management, Taylor’s University, Malaysia

²Department of Agribusiness and Bioresource Economics, Faculty of Agriculture, Universiti Putra Malaysia, Malaysia

 DOI: 10.24191/sl.v17i1.18516

 3.

Effect of Thickness on the Photocatalytic Performance of ZnO/SBR Composites

  
Latiff¹_, R. Nordin^1,2,3,4*, W. I. Nawawi¹, M. Z. Salihin^5,6, H, Pauzi⁷_, M.B.A. Bakar⁸, M.K. Afdhol⁴, M. Abdurrahman⁴ and M. NorHayati⁹

¹Department of Chemistry, Faculty of Applied Sciences, Universiti Teknologi MARA, Perlis Branch, Arau Campus, 02600 Arau, Perlis, Malaysia

²Green and Functional Polymer Research Group, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

³Advanced Technology Training Center, Manpower Department, Ministry of Human Resource, 34600 Kamunting Taiping, Perak, Malaysia

⁴Department of Petroleum Engineering, Faculty of Engineering, Universitas Islam Riau, Jl. Kaharuddin Nasution No.113 Km. 11, Pekan Baru, Riau – 28284, Indonesia

⁵Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis, Arau 02600, Malaysia.

⁶Biomedical and Nanotechnology Research Group, Center of Excellence Geopolymer and Green Technology, Universiti Malaysia Perlis, Arau 02600, Malaysia

⁷Science and Engineering Research Center, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia

⁸Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan, Jeli Campus, 17600 Jeli, Kelantan Malaysia

⁹Centre of Foundation Studies, Universiti Teknologi MARA Selangor Branch, Dengkil Campus, 43800, Dengkil, Selangor, Malaysia

DOI: 10.24191/sl.v17i1.18697

 4.

An Overview of the Development of Chemical Desulfurization Technology for Organic Sulfur Coal 

Syarifah Nursyimi Azlina Syed Ismail^1*, Nur Nasulhah Kasim¹, Siti Nurlia Ali¹, Mohd Fauzi Abdullah¹, Mohd Azlan Mohd Ishak¹ and Razi Ahmad^2,3

¹Faculty of Applied Sciences, Universiti Teknologi MARA, Kampus Arau, 02600 Arau, Perlis, Malaysia

²Faculty of Civil Engineering Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia

³Center of Excellence, Water Research and Environmental Sustainability Growth (WAREG), Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia

 5.

Optimisation of Biodiesel Production via In-Situ Esterification for Spent Bleaching Earth Waste (SBEW) using Response Surface Methodology

Asnida Yanti Ani^1,2*, Nur Syazlinda Esa’ Ayuddi², Izzati Halid², Muhammad Luqman Md Ali^1,2 and Mohd Azlan Mohd Ishak^1,2

¹Fuel & Biomass Energy Research Group, Universiti Teknologi MARA, Perlis Branch, Arau Campus, 02600, Arau, Perlis, Malaysia.

²Faculty of Applied Sciences, Universiti Teknologi MARA, Perlis Branch, Arau Campus, 02600, Arau, Perlis, Malaysia.

 DOI: 10.24191/sl.v17i1.18857

 6.

Catalytic Pyrolysis of Torrefied Empty Fruit Bunch (EFB) with Sulphated Zirconia

Alina Rahayu Mohamed¹*, Nur Annashuha Zakry² Razi Ahmad³ and Nur Nasulhah Kasim⁴ 

¹Faculty of Chemical Engineering & Technology, UniMAP Campus Uniciti Alam, Universiti Malaysia Perlis, 02100 Padang Besar Perlis, Malaysia

²Top Glove F11, Lot 4967, Jalan Teratai, 6^th Miles, Off Jalan Meru 41050 Klang Selangor.

³Faculty of Civil Engineering Technology, UniMAP Jejawi Complex of Academics (3), Arau 02600 Perlis

⁴Coal and Biomass Energy Research Group, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia

DOI: 10.24191/sl.v17i1.18870

 7.

Nano-optical Properties of Sputtered Indium Tin Oxide on Black Silicon for Heterojunction Solar Cells 

Auwal Abdulkadir^1*, Azlan Abdul Aziz² and Mohd Zamir Pakhuruddin^2,3*

¹Department of Physics, Umaru Musa Yar’adua University, P. M. B. 2218 Katsina, Nigeria

²Photovoltaic Materials and Devices, School of Physics, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia

³Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, 11800 USM, Penang, Malaysia

DOI: 10.24191/sl.v17i1.18896

 8.

Impact of Annealing Towards Anti-Reflection Properties of Al₂O₃ on Silicon

Halo Dalshad Omar^1,2, Md. Roslan Hashim¹ and Mohd Zamir Pakhuruddin^1,3,*

¹Photovoltaic Materials and Devices, School of Physics, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.

²Department of Physics, Faculty of Science and Health, Koya University, Koya KOY45, Kurdistan Region - F.R. Iraq.

³Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.

DOI: 10.24191/sl.v17i1.18897

 9.

Phylogenetic Analysis and Comparative Genomics of Brucella melitensis in Human Brucellosis: A Review

Jama’ayah Mohamed Zahidi^1,2*, Rohaidah Hashim² and Mohd Faiz Foong Abdullah¹

¹Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia ²Bacteriology Unit, Institute for Medical Research, National Institute of Health, Setia Alam 40170, Malaysia 

DOI: 10.24191/sl.v17i1.19029

 10.

Antioxidant Activity of Ethanolic Extracts of Purple and Orange Sweet Potatoes (Ipomoea batatas L.)

Haryoto,¹* Mardi Putri Riyadini,¹ Muhtadi¹ and Agustono Wibowo^2,3

¹Pharmaceutical Chemistry of Pharmacy Faculty, Universitas Muhammadiyah Surakarta, Jl. A. Yani Tromol Pos I, Pabelan, Kartasura, Surakarta 57102, Central Java, Indonesia

²Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Pahang Branch, Jengka Campus, 26400 Bandar Tun Abdul Razak Jengka, Pahang, Malaysia

³Organic Synthesis Laboratory, Institute of Science, Universiti Teknologi MARA (UiTM), 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia

DOI: 10.24191/sl.v17i1.19872

 11.

Siti Nurlia Ali^1*, Mohd Azlan Mohd Ishak¹, Khudzir Ismail¹, Ali H. Jawad² and Nur Nasulhah Kasim¹

¹Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Kampus Arau, 02600 Arau, Perlis, Malaysia.

²Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

DOI: 10.24191/sl.v17i1.20146

 12.

Gastrointestinal Infection of Rabbits in Ranau Rabbit Farm, Ranau, Sabah Malaysia

Johanes Anak Patrick and Siti Sarayati Hj Abdul Mawah*

 Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Cawangan Sabah, Kota Kinabalu Campus,  Locked Bag 71, 89888 Kota Kinabalu, Sabah, Malaysia

 DOI: 10.24191/sl.v17i1.19874