Items where Author is "Lee, Yook Heng"

Ulianas, Alizar and Sharina Abu Hanifah, and Ling, Ling Tan and Normazida Rozi, and Lee, Yook Heng and Ling, Ling Tan and Dewata, Indang and Mawardi, Mawardi and Yulkifli, and Zainul, Rahadian and Yuniarti, Elsa and Suryani, Okta and Sari, Trisna Kumala (2024) An ultrasensitive electrochemical enzymatic urea biosensor based on aniline/nbutyl acrylate conducting polymer-modified screen-printed electrode. Sains Malaysiana, 53 (6). pp. 1295-1307. ISSN 0126-6039

Nahdya Khairani, and Lau, Han Yih and Zamri Ishak, and Lee, Yook Heng and Tan, Ling Ling (2022) Biosensor DNA voltametri berasaskan nanozarah emas bersalut elektrod bercetak skrin karbon untuk pengesanan DNA organisma terubah suai genetik (GMO). Sains Malaysiana, 51 (10). pp. 3285-3294. ISSN 0126-6039

Noor Izaanin Ramli, and Lee, Yook Heng and Tan, Ling Ling (2022) A simple potentiometric biosensor based on carboxylesterase for the analysis of aspartame. Sains Malaysiana, 51 (9). pp. 2913-2924. ISSN 0126-6039

Nur Syamimi Mohamad, and Ling, Ling Tan and Goh, Choo Ta and Lee, Yook Heng and Nadhratun Naiim Mobarak, and Azwan Mat Lazim, and Suhaila Sapari, and Fazira Ilyana Abdul Razak, and Nurul Izzaty Hassan, (2022) A quinoline-based fluorescent labelling for zinc detection and DFT calculations. Sains Malaysiana, 51 (12). pp. 3949-3966. ISSN 0126-6039

Suhaila Sapari, and Emma Izzati Zakariah, and Nurul Hidayah Abdul Razak, and Insyirah Ramzan, and Mohd Sofi Numin, and Lee, Yook Heng and Siti Aishah Hasbullah, (2021) A comparative study of microwave-assisted and conventional heating methods of the synthesis of 1-(Naphthalene-1-Yl)-3-(O, M, P-Tolyl)thioureas, DFT analysis, antibacterial evaluation and drug-likeness assessment. Sains Malaysiana, 50 (3). pp. 743-751. ISSN 0126-6039

Nur-Fadhilah Mazlan, and Tan, Ling Ling and Mohammad Imam Hasan Reza, and Goh, Choo Ta and Nurul Huda Abd. Karim, and Lee, Yook Heng (2020) Managing dengue disaster: uncovering paramount community elements for DNA sensory tool accessibility in Malaysia. Sains Malaysiana, 49 (4). pp. 743-754. ISSN 0126-6039

Kook, Shih Ying and Fatimatul Akma Awang Ngah, and Suhaila Sapari, and Lee, Yook Heng and Siti Aishah Hasbullah, (2019) Kajian pengkompleksan sebatian bis-tiourea dengan ion aluminium sebagai ionofor dalam pembangunan sensor ion potensiometri. Sains Malaysiana, 48 (12). pp. 2649-2661. ISSN 0126-6039

Eda Yuhana Ariffin, and Nik Nurhanan Nik Mansor, and Safitri, Eka and Lee, Yook Heng and Nurul Izzaty Hassan, (2019) A hydrogen peroxide biosensor from horseradish peroxidase immobilization onto acrylic microspheres. Sains Malaysiana, 48 (7). pp. 1409-1416. ISSN 0126-6039

Noor Azizah Ahmad, and Lee, Yook Heng and Faridah Salam, and Sharian Abu Hanafiah, (2018) Kajian potensi ekstrak bilberi sebagai penunjuk pH untuk memantau kesegaran makanan secara kromametri. Sains Malaysiana, 47 (11). pp. 2685-2691. ISSN 0126-6039

Kook, Shih Ying and Lee, Yook Heng and Nurul Izzaty Hassan, and Siti Aishah Hasbullah, (2018) A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor. Sains Malaysiana, 47 (11). pp. 2657-2666. ISSN 0126-6039

Eda Yuhana Ariffin, and Lee, Yook Heng and Tan, Ling Ling and Nurul Huda Abd Karim, (2018) Sintesis dan pencirian kompleks nikel(II) salfen dengan rantai sisi piperidina dan kajian interaksi dengan DNA denggi. Sains Malaysiana, 47 (6). pp. 1139-1146. ISSN 0126-6039

Wan Elina Faradilla Wan Khalid, and Lee, Yook Heng and Mohamad Nasir Mat Arip, (2018) Surface modification of cellulose nanomaterial for urea biosensor application. Sains Malaysiana, 47 (5). pp. 941-949. ISSN 0126-6039

Noor Zuhartini Md Muslim, and Musa Ahmad, and Lee, Yook Heng and Bahruddin Saad, (2018) An optical sensor based on immobilized copper(II) ions for the determination of free glutamate in food samples. Sains Malaysiana, 47 (4). pp. 707-713. ISSN 0126-6039

Chong, Yee May and Musa Ahmad, and Lee, Yook Heng and Norzila Kusnin, and Mohd Yunus Abdul Shukor, (2017) Acrylamide optical sensor based on hydrolysis using Bacillus sp. strain ZK34 containing amidase properties. Sains Malaysiana, 46 (9). pp. 1557-1563. ISSN 0126-6039

Faiz Bukhari Mohd Suah, and Musa Ahmad, and Lee, Yook Heng (2016) Kesan penambahan surfaktan tak-ionik kepada kompleks Al(III)-morin dalam penentuan aluminium (III) akues secara spektrofotometri. Sains Malaysiana, 45 (12). pp. 1807-1814. ISSN 0126-6039

Faiz Bukhari Mohd Suah, and Musa Ahmad, and Lee, Yook Heng (2016) Peningkatan kesensitifan sensor Al(III) optik dengan menggunakan manik terkandung polime. Sains Malaysiana, 45 (12). pp. 1795-1805. ISSN 0126-6039

Ooi, Lia and Lee, Yook Heng and Goh, Choo Ta (2016) The potential of biosensor as an early warning tool for disaster risk reduction at regional level. Jurnal Antarabangsa Alam dan Tamadun Melayu (Iman), 4 (SI) (1). pp. 11-20. ISSN 2289-1706

Sharina Abu Hanifah, and Normah Hamzah, and Lee, Yook Heng (2013) Rapid synthesis of magnetic microspheres poly(glycidyl methacrylate-co-styrene) by photopolymerization. Sains Malaysiana, 42 (4). pp. 487-493. ISSN 0126-6039

Nur Ellina Azmi, and Jaafar Abdullah, and Musa Ahmad, and Lee, Yook Heng and Hamidah Sidek, and Samsulida Abd Rahman, (2011) Bioanalysis based on glutamate dehydrogenase/diaphorase system for ammonium determination (Bioanalisis berasaskan sistem glutamat dehidrogenase-diaporase untuk pengesanan ammonium). Sains Malaysiana, 40 (11). pp. 1263-1269. ISSN 0126-6039

Tan, Ling Ling and Musa Ahmad, and Lee, Yook Heng (2011) Quantitative determination of ammonium ion in aqueous environment using riegler’s solution and artificial neural network. Sains Malaysiana, 40 (10). pp. 1105-1113. ISSN 0126-6039

Koh, Siew Min and Koh, Pea Kee and Sim, Khay Tien and Lee, Yook Heng and Salmijah Surif, (2011) Analisis proksimat dan logam berat dalam tisu kerang (anadara granosa) di beberapa tapak akuakultur di Semenanjung Malaysia. Sains Malaysiana, 40 (2). pp. 139-146. ISSN 0126-6039

Sahibin Abd. Rahim, and Zulfahmi Ali Rahman, and Mohd Nizam Mohd Said, and Wan Mohd Razi Idris, and Tukimat Lihan, and Lee, Yook Heng and Tajudin Mahmud, and Cho, Wai Keat (2011) Kandungan karbon organik dan stok karbon dalam tanih gambut, persekitaran pertanian kelapa sawit, Kuala Langat Selatan, Selangor. e-BANGI: Jurnal Sains Sosial dan Kemanusiaan, 6 (2). pp. 170-182. ISSN 1823-884x

Sim, Khay Tien and Lee, Yook Heng and Mazlan Abd. Ghaffar, and Mohd. Pauzi Zakaria, and Salmijah Surif, (2010) Content determination and health risk assessment of polycyclic aromatic hydrocarbon in fish tissue samples from Perhentian Island, Malaysia. Sains Malaysiana, 39 (2). pp. 219-226. ISSN 0126-6039

Nurul Izzah Ahmad, and Aminah Abdullah, and Md Pauzi Abdullah, and Lee, Yook Heng and Wan Rozita Wan Mahiyuddin, and Siti Fatimah Daud, and Lokman Hakim Sulaiman, (2010) Tabiat pengambilan ulam-ulaman di kalangan orang dewasa pelbagai etnik di Selangor. Jurnal Sains Kesihatan Malaysia, 8 (2). pp. 27-35. ISSN 1675-8161

Rita Sundari, and Musa Ahmad, and Lee , Yook Heng (2006) Equation modeling of Sembulan River , Sabah , as a case study using backward stepwise multiple linear regression. Sains Malaysiana, 35 (2). pp. 1-7. ISSN 0126-6039

Lee , Yook Heng and Mazlin Mokhtar, and Siti Rohaya Omar , (2006) Organochlorine insecticides level detected in water and sediments from the Langat River and a Lake near to a golf course at Bangi, Selangor. Sains Malaysiana, 35 (1). pp. 1-6. ISSN 0126-6039

Jaafar Abdullah, and Musa Ahmad, and Lee , Yook Heng and Nadarajah Karuppiah, and Hamidah Sidek, (2005) Penggunaan enzim tirosinase pegun dalam filem sol-gel untuk pengesanan fenol dengan kaedah optik. Sains Malaysiana, 34 (2). pp. 125-128. ISSN 0126-6039

Khor , Sook Mei and Lee , Yook Heng and Musa Ahmad, (2004) Elektrod Ag/AgCl sebagai transduser potentiometrik untuk sensor/biosensor jenis keadaan-pepejal. Sains Malaysiana, 33 (2). pp. 55-66. ISSN 0126-6039

Lee , Yook Heng and Zuriati Zakaria, and Zanal Mohd Zain, and Hazimin Harun, and Farrah Anis Fazliatul Adnan, and Suhaida Mohd Redzuan, (2004) Kesan luahan kumbahan domestik ke atas sungai dan perairan pantai di Malaysia. Sains Malaysiana, 33 (1). pp. 167-180. ISSN 0126-6039

Lee , Yook Heng and Loh , Han Chern and Musa Ahmad, (2003) Biosensor potentiometrik untuk penentuan urea dan ketoksikan logam berat. Sains Malaysiana, 32 . pp. 47-56. ISSN 0126-6039

Khairiah Jusoh, and Carol Hoh Mui Ling, and Nik Mazidah Nik Ahmad, and Nik Marzuki Sidik, and Lee , Yook Heng (2003) Ketoksikan logam zink dan kadmium terhadap anabaena flos-aquae. Sains Malaysiana, 32 . pp. 147-155. ISSN 0126-6039