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Asian Pacific Journal of Tropical Medicine 2024年第9期17卷 384-391页

作者： abdulRahman Muthanna Mohd Nasir Mohd Desa Nurul Asyikin abdul Rahman Nurul Diana Dzaraly Nurul Hana Zainal Baharin Nur Afiza aziz Chua Hui Shan Zalina Ismail Lailatul Akmar Mat nor Marlindawati Mohd Ali Nur Hanani Ahmad Mohammad Noor Amal Azmai Syafinaz Amin-nordin Department of Biomedical Sciences Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia School of Biology Faculty of Applied SciencesUniversiti Teknologi MARANegeri Sembilan72000 Kuala PilahMalaysia Department of Oral Biology&Biomedical Sciences Faculty of DentistryMAHSA University42610 JenjaromSelangorMalaysia School of Bioscience Faculty of Pharmacy and Biomedical SciencesMAHSA University42610 JenjaromSelangorMalaysia Department of Pathology Sultanah Aminah Hospital80100 Johor BahruJohorMalaysia Department of Pathology Melaka General Hospital75400 MelakaMalaysia Department of Medical Microbiology and Immunology Faculty of MedicineUniversiti Kebangsaan Malaysia56000 CherasKuala LumpurMalaysia Department of Pathology Sultan Idris Shah Serdang Hospital43000 KajangSelangorMalaysia Department of Pathology Tuanku Ja'afar Hospital70300 SerembanNegeri SembilanMalaysia Department of Pathology Sungai Buloh Hospital47000 Sungai BulohSelangorMalaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Aquatic Animal Health and Therapeutics Laboratory Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Sultan Abdul Aziz Shah HospitalUniversiti Putra MalaysiaPersiaran MARDI-UPM43400SelangorMalaysia

Objective:To address the lack of research on invasive group B Streptococcus(GBS)infections in Malaysia and Southeast Asia through a comprehensive analysis of GBS isolates obtained from ***:Medical records from patients with GBS infection isolated from the sterile site,such as blood and cerebrospinal fluid from 14 July 2019 to 15 December 2020,were reviewed from six major hospitals in Peninsular *** criteria were invasive GBS,sterile sites and non-repeated GBS isolated from the same patients in the same *** isolates were re-identified for GBS and ***:A total of 118 patients were eligible,with a majority of non-pregnant adults(76.3%).Over half of the patients(62.7%)had underlying medical conditions,with diabetes as the most common disease,followed by respiratory disease,renal disease,cardiovascular disease and skin and soft tissue *** most common manifestations were sepsis,followed by soft tissue abscess,diabetic foot ulcer,wet gangrene and *** overall mortality was 7.6%.The most common serotype was serotype桋.Conclusions:Invasive GBS infection among non-pregnant adults showed a rising trend,particularly among diabetic *** study underscores the importance of reducing risk factors and highlights the necessity of developing GBS vaccination as a preventive strategy for both infants and adults.

关键词： Streptococcus agalactiae Group B Streptococcus Invasive GBS infections Malaysia

Forensic profiling of non-volatile organic compounds in soil using ultra-performance liquid chromatography:a pilot study

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Forensic Sciences Research 2022年第4期7卷 761-773页

作者： Loong Chuen Lee ab.aziz Ishak Ameeta A/P Nai Eyan Anas Fahmi Zakaria Nurul Syahiera Kharudin nor Azman Mohd Noor Program of Forensic Sciences Centre for DiagnosticTherapeutic&Investigative StudiesFaculty of Health SciencesUniversiti Kebangsaan MalaysiaBangiMalaysia Institute of IR4.0 Universiti Kebangsaan MalaysiaBangiMalaysia Makmal Forensik Polis DiRaja Malaysia(PDRM) CherasMalaysia

Soil is of particular interest to the forensic community because it can be used as valuable associative evidence to link a suspect to a victim or a crime *** chromatography is a powerful analytical tool for organic compound ***,high-performance liquid chromatography(HPLC)has proven to be an efficient method for forensic soil analysis,especially in discriminating soils from proximity ***,ultra-performance liquid chromatography(UPLC),which is much more sensitive than HPLC,has never been explored in this *** study proposed a UPLC method for profiling non-volatile organic compounds in three Malaysian soils(red,brown and yellowish-brown soils).The three soils were analysed separately to assess the effects of individual chromatographic parameters:(a)elution programme(isocratic *** gradient programmes);(b)flow rate(0.1 vs.0.2 mL/min);(c)extraction solvent(acetonitrile ***)and(d)detection wavelength(230 vs.254 nm).The injection volume and total run time were set to 5μL and 35 min,***,each soil sample gave 24 different *** showed that the most desirable chromatographic parameters were(a)isocratic elution;(b)flow rate at 0.2 mL/min and(c)acetonitrile extraction *** proposed UPLC system is expected to be a feasible method for profiling non-volatile organic compounds in soil,and is more chemical-efficient than a comparable HPLC system.

关键词： Forensic sciences soil non-volatile organic compound liquid chromatography

Subspace Clustering in High-Dimensional Data Streams:A Systematic Literature Review

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Computers, Materials & Continua 2023年第5期75卷 4649-4668页

作者： Nur Laila ab Ghani Izzatdin abdul aziz Said Jadid abdulKadir Department of Computer and Information Sciences Universiti Teknologi PETRONASSeri Iskandar32610PerakMalaysia Centre for Research in Data Science(CeRDAS) Universiti Teknologi PETRONASSeri Iskandar32610PerakMalaysia

Clustering high dimensional data is challenging as data dimensionality increases the distance between data points,resulting in sparse regions that degrade clustering *** clustering is a common approach for processing high-dimensional data by finding relevant features for each cluster in the data *** clustering methods extend traditional clustering to account for the constraints imposed by data *** streams are not only high-dimensional,but also unbounded and *** necessitates the development of subspace clustering algorithms that can handle high dimensionality and adapt to the unique characteristics of data *** many articles have contributed to the literature review on data stream clustering,there is currently no specific review on subspace clustering algorithms in high-dimensional data ***,this article aims to systematically review the existing literature on subspace clustering of data streams in high-dimensional streaming *** review follows a systematic methodological approach and includes 18 articles for the final *** analysis focused on two research questions related to the general clustering process and dealing with the unbounded and evolving characteristics of data *** main findings relate to six elements:clustering process,cluster search,subspace search,synopsis structure,cluster maintenance,and evaluation *** algorithms use a two-phase clustering approach consisting of an initialization stage,a refinement stage,a cluster maintenance stage,and a final clustering *** density-based top-down subspace clustering approach is more widely used than the others because it is able to distinguish true clusters and outliers using projected *** algorithms implicitly adapt to the evolving nature of the data stream by using a time fading function that is sensitive to *** work can focus on the clustering framework,parameter optimiza

关键词： Clustering subspace clustering projected clustering data stream stream clustering high dimensionality evolving data stream concept drift

Spermatozoa morphometry and ultrastructure in estuarine crocodile (Crocodylus porosus)

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Asian pacific Journal of Reproduction 2020年第2期9卷 104-108页

作者： Wan-nor Fitri Haron Wahid Putra Tengku Rinalfi Dana Raj Yawah Donny Latip Qayyum ab.aziz abdul Malek Department of Veterinary Clinical Studies Faculty of Veterinary MedicineUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Research Centre for Wildlife Faculty of Veterinary MedicineUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Veterinary Pre-Clinical Studies Faculty of Veterinary MedicineUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Sarang Buaya Pasir Gudang Aras 2 Menara AqabahJalan Bandar81700 Pasir GudangJohorMalaysia Wildlife Veterinary Section Ex-Situ Conservation DivisionDepartment of Wildlife and National Parks(PERHILITAN)Peninsular Malaysia

Objective: To evaluate normal spermatozoa morphometry and ultrastructure in estuarine crocodile (Crocodylus porosus). Methods: Four adult male crocodiles aged between 12-15 years, with an average snout to tail length of (3.15±0.01) m were selected for this study. Manipulation of the phallus digitally from the base of the penis was performed on four adult male crocodiles to facilitate the flow of semen to the sulcus. Semen was collected from all individuals for spermatozoa morphometry and ultrastructure study. Morphometry analysis was performed from eosin-nigrosin stained spermatozoa sample. Scanning electron microscopy was conducted to observe the surface ultrastructure of spermatozoa. Results: The morphology of crocodile spermatozoa was made up of acrosome, head, and tail which corresponded to (5.55±1.20) μm, (12.74±1.57) μm, and (70.67±4.40) μm, respectively. The total length of spermatozoa in estuarine crocodile was measured at (88.96±0.52) μm. The most common spermatozoa abnormalities found in the samples were cytoplasmic droplets. Conclusions: normal morphology, morphometry of spermatozoa in estuarine crocodile which are vermiform shaped-head with a long tail along with questionably high cytoplasmic droplets count are described in this study.

关键词： Spermatozoa Scanning electron microscopy Morphology Crocodile Cytoplasmic droplets

A Review of Graphene Oxide Crosslinking as Enhanced Corrosion Shield Application

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Journal of Renewable Materials 2023年第6期11卷 2745-2770页

作者： Nurul Anis Athirah ab.aziz Chin Wei Lai Boon Hoong Ong Nanotechnology&Catalysis Research Centre Institute for Advanced StudiesUniversity of MalayaKuala Lumpur50603Malaysia

Nowadays,corrosion is not only undesirable,but it also has a significant influence on the industrial sectors and technical innovations that have demand for *** global economic damage is expected to reach$2.5 trillion,equivalent to more than 3.4%of the world’s GDP in *** is linked with significant financial harm,manufacturing pollution,and safety *** electrochemical process primarily induces metal corrosion at the metalelectrolyte interface region,caused by steel oxidation and the reduction of oxygen,protons,and ***,organic and epoxy coatings can be applied as protective ***,it can prevent metal corrosion in various fields due to its unique properties,like the ability to manage its curing process over a long *** review paper focuses on improving the physicomechanical properties of modified graphene oxide(GO)coating by attaching a polymer,epoxy resin(EP).Moreover,we reviewed recent achievements for different methods in minimizing a corrosion ***,we considered the modification of epoxy resin using the curing agent as a bridge to the polymer to strengthen the functionalization of nanocomposites during the ***,we discussed the relationship between the modified GO/EP anticorrosive coating and physicomechanical properties since it is currently being questioned and remains *** a result,extensive studies on the mechanism of synthesis of the modified GO/EP anticorrosive coating were highlighted.

关键词： Corrosion anticorrosive graphene polymer epoxy resins

absence of postzygotic isolating mechanisms:evidence from experimental hybridization between two species of tropical sea urchins

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第10期13卷 797-810页

作者： M.Aminur RAHMAN Tsuyoshi UEHARA aziz ARSHAD Fatimah Md.YUSOFF Mariana nor SHAMSUDIN Laboratory of Marine Biotechnology Institute of BioscienceUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Chemistry Biology and Marine ScienceFaculty of ScienceUniversity of the Ryukyus1 SenbaruNishihara-choOkinawa 903-0213Japan Department of Aquaculture Faculty of AgricultureUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia

Two reef margin species of tropical sea urchins,Echinometra sp.C(Ec) and Echinometra oblonga(Eo),occur sympatrically on Okinawa intertidal reefs in southern *** between these species was examined through a series of cross-fertilization *** limited sperm concentrations,where conspecific crosses reached near 100% fertilization,both heterospecific crosses showed high fertilization rates(81%-85%).The compatibility of the gametes demonstrated that if gamete recognition molecules are involved in fertilization of these species,they are not strongly *** found that conspecific crosses reached peak fertilization levels much faster than did heterospecific crosses,indicating the presence of a prezygotic barrier to hybridization in the *** survival,metamorphosis,and juvenile and adult survival of hybrid groups were nearly identical to those of their parent *** from crosses in both directions developed normally through larval stages to sexually mature adults,indicating that neither gametic incompatibility nor hybrid inviability appeared to maintain reproductive isolation between these *** adults,Ec×Ec crosses gave the highest live weight,followed by Eo(ova)×Ec(sperm),Ec(ova)×Eo(sperm),and Eo×*** growth performance measures(viz.,test size,Aristotle's lantern length,and gonad index) of hybrid groups and their parental siblings showed the same *** phenotypic color patterns of the hybrids were closer to the maternal coloration,whereas spine length,tube-foot and gonad spicule characteristics,pedicellaria valve length,and gamete sizes showed intermediate *** F 1 hybrids were completely fertile and displayed high fertilization success in F 1 backcrosses,eliminating the likelihood that hybrid sterility is a postzygotic mechanism of reproductive ***,intensive surveys failed to find hybrid individuals in the field,suggesting the lack or rarity of natural *** stron

关键词： Sea urchins Echinometra Hybridization Gamete compatibility Reproductive isolation Speciation

Effect of iridium loading on HZSM-5 for isomerization of n-heptane

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Journal of Natural Gas Chemistry 2011年第5期20卷 477-482页

作者： Herma Dina Setiabudi Sugeng Triwahyono Aishah abdul Jalil Nur Hidayatul Nazirah Kamarudin Muhammad Arif ab.aziz Department of Chemical Engineering Faculty of Chemical Engineering Universiti Teknologi Malaysia Ibnu Sina Institute for Fundamental Science Studies Faculty of Science Universiti Teknologi Malaysia

The effect of iridium loading on the properties and catalytic isomerization of n-heptane over Ir-HZSM-5 is studied. Ir-HZSM-5 was prepared by impregnation method and subjected to isomerization process in the presence of flowing hydrogen gas. XRD and BET studies show that the presence of iridium stabilizes the crystalline structure of HZSM-5, leading to more ordered framework structure and larger surface area. TGA and FTIR results substantiate that iridium species interacts with OH group on the surface of HZSM-5. Pyridine FT-IR study verifies the interaction between iridium and surface OH group slightly increased the Bro¨nsted and Lewis acid sites without changing the lattice structure of HZSM-5. The presence of iridium and the increase of strong Lewis acid sites on HZSM-5 were found to bring an increase about 4.1%, 33.2% and 11.8% in conversion, selectivity and yield of n-heptane isomerization, respectively.

关键词： Ir-HZSM-5 n-heptane isomerization Lewis acid sites protonic acid sites

Zinc and Copper Concentrations in Two Species of Intertidal Crabs from the Middle of the West Coast of Peninsular Malaysia

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湿地科学 2009年第3期7卷 218-229页

作者： Mohammad Mohd Ikram Ahmad Ismail Chee Kong Yap nor Azwady abd aziz Department of Basic Science and Engineering Faculty of Agriculture and Food Sciences Universiti Putra Malaysia Bintulu Sarawak 97008 Malaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia UPM 43400 Serdang Selangor Malaysia

A study on Zn and Cu concentrations in 2 species of intertidal crabs,namely Uca annulipes and Dotilla myctiroides collected from the intertidal coastal area of Selangor(5 sites) and Negeri Sembilan(3 sites),west coast of Peninsular Malaysia,was carried *** various localized sources of Zn and Cu discharges towards both the crab species were mentioned.A comparative study between the 2 crab species also revealed that the concentrations of Zn and Cu were significantly(Pabs' microhabitat sediments since metals can be associated with the organic matter of sediments in which they might ***(Pabs was also *** relationships between Zn and Cu concentrations with body weight and carapace width of *** and *** were significantly(P<0.01 and P<0.05) correlated although the pair wise was weak.

关键词：沉积物马来西亚半岛有机物质螃蟹

Laboratory efficacy of mycoparasitic fungi(Aspergillus tubingensis and Trichoderma harzianum) against tropical bed bugs(Cimex hemipterus)(Hemiptera:Cimicidae)

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Asian Pacific Journal of Tropical Biomedicine 2017年第4期7卷 288-293页

作者： Zulaikha Zahran Nik Mohd Izham Mohamed nor Hamady Dieng Tomomitsu Satho abdul Hafiz ab Majid Household and Structural Urban Entomology Laboratory Vector Control Research UnitSchool of Biological SciencesUniversiti Sains Malaysia Plant Pathology Laboratory School of Biological SciencesUniversiti Sains Malaysia Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak Department of Microbiology Faculty of Pharmaceutical SciencesFukuoka University

Objective: To test the effectiveness of conidial spore formulations [Aspergillus tubingensis(***) and Trichoderma harzianum(***)] against tropical bed bugs, Cimex ***: Spore formulations were made from two fungal strains, *** and *** bed bugs were exposed to the conidial spores placed soaked onto a fabric cloth for 1 h and the mortality counts were recorded daily until 14 ***: Mean survival times based on Kaplan–Meier survival analysis showed no significant differences between all the concentrations in both the fungal isolates:*** and ***, the evaluation of both the isolates in terms of virulence resulted in low lethal hours in all the concentrations except for the high concentration of ***(LT_(50)= 44.629 h) at the conidial exposure of 1 × 10~6 spores/*** mortality of the bed bugs was observed from Day 6 to Day 12, ranging from 13% to 90% in all three concentrations of *** reference to the *** exposure, the concentration of 1 × 10~4 spores/mL displayed a gradual increase in the percentage mortality of 90 on Day ***: Approaches to the bed bugs treatment should be explored in-depth using a natural biological agent like fungus especially *** to reduce this pest population, in order to replace chemical methods.

关键词： Tropical bed bug Mycoparasitic fungi Aspergillus tubingensis Trichoderma harzianum Bio-control