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Jalaludin, Adam,Ngim, Jeremy,Bakar, Baki H.J.,Alias, Zazali The Korean Society of Weed Science and The Turfgra 2010 Weed Biology and Management Vol.10 No.4
Goosegrass (Eleusine indica), regarded as one of the world's worst weeds, is highly pernicious to cash crop-growers in Malaysia. Following reports in 2009 that glufosinate-ammonium failed to adequately control goosegrass populations in Kesang, Malacca, and Jerantut, Pahang, Malaysia, on-site field trials were conducted to assess the efficacy of glufosinate-ammonium towards goosegrass in both places. Preliminary screenings with glufosinate-ammonium at the recommended rate of 495 $g\;ai\;ha^{-1}$ provided 82% control of the weed at a vegetable farm in Kesang, while the same rate failed to control goosegrass at an oil palm nursery in Jerantut. The ensuing greenhouse evaluations indicated that the "Kesang" biotype exhibited twofold resistance, while the "Jerantut" biotype exhibited eightfold resistance towards glufosinate-ammonium, compared to susceptible goosegrass populations. The occurrence of glufosinate resistance in goosegrass calls for more integrated management of the weed to prevent escalating resistance and further proliferation of the weed in Malaysia.
Poverty Eradication Programme in Malaysia: A Process Evaluation Analysis
( Dayana Jalaludin ),( A-k Siti Nabiha ),( Sangita Jeyaram ) 한국정책학회 2016 한국정책학회 추계학술발표논문집 Vol.2016 No.-
The Azam Tani Programme is one of the recent endeavours of the Malaysian government to reduce poverty. Prior literature on poverty eradication have highlighted on the bearings of various economic interventions, particularly on its determinants for succes, as well as the barriers, challenges and impacts. The present study offers an alternative perspective by conducting a case study focusing on the delivery process of a specific poverty eradication programme. A closer examination on the programme`s resources and activities is conducted through interviews with public officers from the implementing agencies. Several pathways for improvement could be highlighted for mthe findings specifically in the aspects of human resourcing, performance measurement, accountability and stakehoders` engagement.
MALDI-MS: A Powerful but Underutilized Mass Spectrometric Technique for Exosome Research
Iqbal Jalaludin,David M. Lubman,김정권 사단법인 한국질량분석학회 2021 Mass spectrometry letters Vol.12 No.3
Exosomes have gained the attention of the scientific community because of their role in facilitating intercellular communi- cation, which is critical in disease monitoring and drug delivery research. Exosome research has grown significantly in recent decades, with a focus on the development of various technologies for isolating and characterizing exosomes. Among these efforts is the use of matrix-assisted laser desorption ionization (MALDI) mass spectrometry (MS), which offers high-throughput direct analysis while also being cost and time effective. MALDI is used less frequently in exosome research than electrospray ionization due to the diverse popu- lation of extracellular vesicles and the impurity of isolated products, both of which necessitate chromatographic separation prior to MS analysis. However, MALDI-MS is a more appropriate instrument for the analytical approach to patient therapy, given it allows for fast and label-free analysis. There is a huge drive to explore MALDI-MS in exosome research because the technology holds great potential, most notably in biomarker discovery. With methods such as fingerprint analysis, OMICs profiling, and statistical analysis, the search for biomarkers could be much more efficient. In this review, we highlight the potential of MALDI-MS as a tool for investigating exo- somes and some of the possible strategies that can be implemented based on prior research.
Urinary exosome isolation using multiple cycles of centrifugation
Iqbal Jalaludin,김정권 한국분석과학회 2021 학술대회논문집 Vol.2021 No.11
Exosomes have great potential for non-invasive diagnostics and therapeutics because of their capacity in facilitating communication between cells and drug delivery. Exosomes are produced in cells and discharged into the extracellular milieu as they circulate throughout the system. Hence, they can be found in biofluids such as blood and urine. Ultracentrifugation is a standard method for isolating exosomes that use high-speed centrifugation, i.e. 100,000×g, to pellet exosomes. However, the exosome integrity can be compromised by repetitive high-speed centrifugation, which damages the vesicles. Our present study employed low-speed centrifugation, i.e. 40,000×g, to isolate exosomes from urine samples. The method required four cycles of centrifugation to remove non-exosomal proteins based on the gel electrophoresis results. Exosomal proteins like CD63 and TSG101 corresponded to the antibodies in Western blotting, confirming the existence of exosomes. Dynamic light scattering profiles suggested that the average diameter of the isolated pellets was 50 to 200 nm, which is the size range of exosomes. All characterization methods indicate that the urinary exosome isolation using lower speed centrifugation was feasible. Further research with a larger group of subjects is needed to assess the reproducibility of the method.