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Journal of Energy Chemistry 2016年第4期25卷 691-701页

作者： Choonyian Haw Weesiong Chiu Noor Hamizah Khanis Saadah abdul Rahman Poisim Khiew Shahidan Radiman Roslan Abd-Shukor muhammad azmi abdul hamid Low Dimensional Materials Research Centre Department of PhysicsUniversity of Malaya Department of Chemical Engineering Faculty of EngineeringUniversity of Nottingham Malaysia CampusJalan Broga School of Applied Physics Faculty of Science and TechnologyNational University of Malaysia

Current study reports a rapid one-pot non-hydrolytic condition in the synthesis of Sn O2QDs nanopowder using tin(II) stearate(Sn(St)2) as environmentally-benign organometallic precursor,which is an unprecedentedly employed-compound in preceding Sn O2nanopowder *** as-synthesized Sn O2QDs that are hydrophobic can be easily transferred from organic solvent to aqueous solution through a robust ligand exchange *** stearate-capping ligands on the surface of QDs can be replaced by beta-cyclodextrin(β-CD) and eventually render the QDs highly water soluble,which ultimately make it exhibit bi-functionality for different liquid medium *** characterizations reveal that the bi-functional QDs are indeed well-matched with the standard rutile Sn O2cassiterite phase without the presence of any *** QDs can be interchangeably used as photocatalyst for both aqueous and non-aqueous phase,where it shows significant enhancement of hydrogen gas production as compared to that of commercial Sn O2nanopowder.

关键词： SnO2 Tinstearate Precursors Ligand exchange Photocatalyst Hydrogen gas production

The effects of mixed prebiotics in aquaculture:A review

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Aquaculture and Fisheries 2024年第1期9卷 28-34页

作者： Wendy Wee Noor Khalidah abdul hamid Khairiyah Mat Raja Ili Airina Raja Khalif Nor Dini Rusli Mohammad Mijanur Rahman muhammad Anamul Kabir Lee Seong Wei Centre for Foundation and Continuing Education Universiti Malaysia Terengganu21030Kuala NerusTerengganuMalaysia School of Biological Sciences Universiti Sains Malaysia11800MindenPulau PinangMalaysia Department of Agricultural Sciences Faculty of Agro-Based IndustryUniversiti Malaysia KelantanJeli Campus17600JeliKelantanMalaysia Faculty of Fisheries Sylhet Agricultural UniversitySylhet3100Bangladesh

Aquaculture industry contributes significant aquaculture species production to meet fish protein demand from the *** industry is gearing towards intensification to increase more production in the near *** technologies and efforts were introduced into aquaculture industry to bring it up to the next higher ***,the development of aquaculture industry is hindered by disease *** a result,excessive use of antibiotics and chemicals were applied to reduce or minimize risk of disease outbreak in aquaculture farming ***,aquacultures products and environment were highly exposed to these antibiotics and *** resolve this issue,fish farmers were encouraged to utilize alternative method in aquaculture species health *** has become a new approach in aquaculture industry to maintain aquaculture species health and a good environment at the same time produce chemical and antibiotic-free aquaculture *** this review paper,we summarize and discuss the effects of prebiotic mixtures administration on growth performance,immune response,disease resistance,and tolerance against abiotic stressors of aquatic animals.

关键词： Growth performance Immunosaccharide Disease resistance Stress relieve

The roles of polysaccharides in tilapia farming:A review

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Aquaculture and Fisheries 2024年第1期9卷 20-27页

作者： Zulhisyam abdul Kari Wendy Wee Noor Khalidah abdul hamid Mahmoud A.O.Dawood Nik Nur Azwanida Binti Zakaria Lee Seong Wei Department of Agricultural Sciences Faculty of Agro-Based IndustryUniversiti Malaysia KelantanJeli CampusJeliKelantan17600Malaysia Advanced Livestock and Aquaculture Research Group Faculty of Agro-Based IndustryUniversiti Malaysia KelantanJeli CampusJeliKelantan17600Malaysia Center of Fundamental and Continuing Education Universiti Malaysia TerengganuKuala NerusTerengganu21030Malaysia School of Biological Sciences Universiti Sains MalaysiaMindenPulau Pinang11800Malaysia Animal Production Department Faculty of AgricultureKafrelsheikh UniversityKafr El-Sheikh33516Egypt The Center for Applied Research on the Environment and Sustainability The American University in Cairo11835CairoEgypt

Impairment of fish growth and immune system due to stress and disease are major constraints in aquaculture ***,antibiotic was used as prophylactic agent in the health management of aquaculture ***,antibiotic only provide a temporary solution to the problem of disease ***-reliance on antibiotic also has led to the increasing cases of antibiotic resistance among pathogenic bacteria from aquaculture sites and contamination of antibiotic residues into human food ***,prebiotic and symbiotic are therefore suggested as alternatives to prophylactic antibiotic to be used in the aquaculture industry.A potential prophylactic agent is polysaccharide that could be developed into an alternative antibiotic for aquatic *** this review paper,definition,sources,and mode of action of polysaccharide are *** roles of polysaccharides in fish farming with emphasis on growth improvement,immune system enhancement,disease resistance stimulation in tilapia farming,and the effects of polysaccharides on abiotic stressors are summarized and discussed.

关键词： Aquaculture Growth performance Immune response Disease resistance Abiotic stressor Synergistic Polysaccharide

A Comprehensive Classification and Analysis of Geomagnetic Storms Over Solar Cycle 24

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Research in Astronomy and Astrophysics 2024年第8期24卷 77-86页

作者： Raja Adibah Raja Halim Shah Nurul Shazana abdul hamid Mardina abdullah Adlyka Annuar Idahwati Sarudin Zahira Mohd Radzi Akimasa Yoshikawa Department of Applied Physics Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia Space Science Centre (ANGKASA) Institute of Climate ChangeUniversiti Kebangsaan Malaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia School of Physics Universiti Sains Malaysia Malaysian Space Agency (MYSA) International Research Center for Space and Planetary Environmental Science (i-SPES) Kyushu University

A geomagnetic storm is a global disturbance of Earth?s magnetosphere,occurring as a result of the interaction with magnetic plasma ejected from the *** considerable research,a comprehensive classification of storms for a complete solar cycle has not yet been fully developed,as most previous studies have been limited to specific storm *** study,therefore,attempted to present complete statistics for solar cycle 24,detailing the occurrence of geomagnetic storm events and classifying them by type of intensity (moderate,intense,and severe),type of complete interval (normal or complex),duration of the recovery phase (rapid or long),and the number of steps in the storm?s *** analysis was applied to data from ground-based magnetometers,which measured the Dst index as provided by the World Data Center for Geomagnetism,Kyoto,*** study identified 211 storm events,comprising moderate (177 events),intense (33 events),and severe (1 event) *** 36%of ICMEs and 23%of CIRs are found to be geoeffective,which caused geomagnetic *** to four-step development of geomagnetic storms was exhibited during the main phase for this solar *** showed the geomagnetic storms developed one or more steps in the main phase,which were probably related to the driver that triggered the geomagnetic storms.A case study was additionally conducted to observe the variations of the ionospheric disturbance dynamo (Ddyn) phenomenon that resulted from the geomagnetic storm event of 2015July *** attenuation of the Ddyn in the equatorial region was analyzed using the H component of geomagnetic field data from stations in the Asian sector (Malaysia and India).The variations in the Ddyn signatures were observed at both stations,with the TIR station (India) showing higher intensity than the LKW station (Malaysia).

关键词： (Sun:) solar-terrestrial relations (Sun:) sunspots Sun: activity Sun: coronal mass ejections (CMEs)

Evaluation of AVNRT & AVRT by Different Criteria: Old & New

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World Journal of Cardiovascular Surgery 2024年第7期14卷 95-106页

作者： abdul hamid Tahmina Alam Sonali Rizwan Rehan Pijous Biswas Subas Caandro Datta Asif Zaman Department of Cardiology Chattagram Medical College Hospital Chattagram Bangladesh Chattagram Medical College Hospital Chattagram Bangladesh Department of Cardiology National Institute of Cardiovascular Disease Dhaka Bangladesh Department of Cardiology Bangamata Sheikh Fozilatunnesa Mujib General Hospital Sirajganj Bangladesh Department of Cardiology Evercare Hospital Dhaka Bangladesh

The two most frequent causes of paroxysmal SVT are atrioventricular tachycardia (AVRT) and atrioventricular nodal re-entrant tachycardia (AVNRT). The purpose of this study was to assess the diagnostic efficacy of traditional and newly proposed ECG criteria in the identification of Avnrt and Avrt. Aim of the Study: The aim of this study was to evaluate Atrioventricular Nodal Reentrant Tachycardia (AVNRT) and Atrioventricular Re-entrant Tachycardia (AVRT) using both traditional and novel criteria. Methods: This prospective observational study was conducted at the Electrophysiology Unit, Department of Cardiology, National Institute of Cardiovascular Diseases (NICVD) in Dhaka, from February 2019 to January 2020. A total of 62 patients with Supraventricular Tachycardia (SVT) undergoing electrophysiology study (EPS) were included. Standard ECG criteria were applied for the differential diagnosis, and electrophysiological diagnoses were made using established criteria. Statistical analysis, including descriptive statistics and appropriate tests, was performed using SPSS 23.0. Result: In our study of 62 patients with Supraventricular Tachycardia (SVT), we found that 66.1% had AVNRT and 33.9% had AVRT. The mean age in AVNRT was higher than AVRT (41.3 ± 9.7 vs. 38.5 ± 14.3, p = 0.36) with statistically no significant difference, with similar gender distribution between AVNRT and AVRT groups. Classical AVNRT criteria were present in 30.6% of patients, and 45.2% showed a Pseudo R' wave in aVR. Additionally, 30.6% had an RP interval ≥100ms, more prevalent in AVRT patients (66.7%). Conclusion: Integrating traditional and novel criteria, including lead aVR analysis, enhances the electrocardiographic diagnosis of AVNRT and AVRT, offering a pathway to refined patient care.

关键词： SVT (Supraventricular Tachycardia) AVNRT (Atrioventricular Nodal Re-Entrant Tachycardia) AVRT (Atrioventricular Re-Entrant Tachycardia) ECG Criteria Electrophysiology

Anti-tumour activity and toxicological studies of combination treatment of Orthosiphon stamineus and gemcitabine on pancreatic xenograft model

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World Journal of Gastroenterology 2022年第32期28卷 4620-4634页

作者： Ashwaq hamid Salem Yehya Ayappa V Subramaniam muhammad Asif Gurjeet Kaur Amin M S abdul Majid Chern Ein Oon Institute for Research in Molecular Medicine Universiti Sains MalaysiaPenang 11800Malaysia Cancer Research Eman BiodiscoveriesKedah 08000Malaysia Department of Pharmacology Faculty of PharmacyThe Islamia University of BahawalpurPunjab 63100Pakistan Department of Cancer Biology and Therapeutics The John Curtin School of Medical ResearchAustralia 2601Australia

BACKGROUND Pancreatic cancer is the most aggressive cancer *** is the first line chemo-drug used for pancreatic cancer but exerts a broad spectrum of organ toxicities and adverse effects in *** To evaluate the anti-tumour activity and toxicological effects of Orthosiphon stamineus extract formulation(ID:C5EOSEW5050ESA trademarked as Nuvastatic^(TM)),and gemcitabine combination on pancreatic xenograft *** Mice were randomly divided into six groups of 6 mice each(n=6)and given different treatments for 28 *** study design consisted of a 2 x 3 factorial treatment structure,with gemcitabine(yes/no)by oral(at 1200 and 400 mg/kg per day).Human pancreatic cancer cells were injected subcutaneously into the flanks of athymic nude mice.C5EOSEW5050ESA(200 or 400 mg/kg per day)was administered orally,while gemcitabine(10 mg/kg per 3 d)was given intraperitoneally either alone or in combination *** analyses of vital organs,tumour tissues,and incidence of lethality were *** of tumour necrosis and proliferation were determined by haematoxylin-eosin staining and immunohistochemistry for Ki-67,*** No signs of toxicity or damage to vital organs were observed in all treatment groups compared to the untreated group.C5EOSEW5050ESA at 200 mg/kg and gemcitabine combination had no additive antitumor effects compared to a single ***,a comparably greater response in a reduction in tumour growth,Ki-67 protein expression,and necrosis was demonstrated by 400 mg/kg of C5EOSEW5050ESA and gemcitabine combination than that of the individual *** These results highlighted the synergistic activity of C5EOSEW5050ESA with gemcitabine to reduce pancreatic tumour growth in mice compared to a single ***,this study provides valuable insights into using C5EOSEW5050ESA as a complementary treatment with gemcitabine for pancreatic cancer.

关键词： Pancreatic cancer Orthosiphon stamineus C5EOSEW5050ESA Gemcitabine Complementary medicine

Weighted-adaptive Inertia Strategy for Multi-objective Scheduling in Multi-clouds

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Computers, Materials & Continua 2022年第7期72卷 1529-1560页

作者： Mazen Farid Rohaya Latip Masnida Hussin Nor Asilah Wati abdul hamid Department of Communication Technology and Networks Universiti Putra Malaysia(UPM)Serdang43400Malaysia Institute for Mathematical Research(INSPEM) Universiti Putra Malaysia(UPM)Serdang43400Malaysia Faculty of Education-Saber University of AdenAden2408Yemen

One of the fundamental problems associated with scheduling workflows on virtual machines in a multi-cloud environment is how to find a near-optimum *** workflow scheduling involves assigning independent computational jobs with conflicting objectives to a set of virtual *** optimization methods for solving non-deterministic polynomial-time hardness(NP-hard)problems deploy multi-objective *** such,Pareto dominance is one of the most efficient criteria for determining the best solutions within the Pareto ***,the main drawback of this method is that it requires a reasonably long time to provide an optimum *** this paper,a new multi-objective minimum weight algorithm is used to derive the Pareto *** conflicting objectives considered are reliability,cost,resource utilization,risk probability and *** multi-objective algorithms select a number of permutations with an optimal trade-off between conflicting objectives,we propose a new decisionmaking approach named the minimum weight optimization(MWO).MWO produces alternative weight to determine the inertia weight by using an adaptive strategy to provide an appropriate alternative for all optimal *** way,consumers’needs and service providers’interests are taken into *** standard scientific workflows with conflicting objectives,we compare our proposed multi-objective scheduling algorithm using minimum weigh optimization(MOS-MWO)with multi-objective scheduling algorithm(MOS).Results show that MOS-MWO outperforms MOS in term of QoS satisfaction rate.

关键词： Multi-cloud environment multi-objective optimization Pareto optimization workflow scheduling

Electromagnetic field exposure as a plausible approach to enhance the proliferation and differentiation of mesenchymal stem cells in clinically relevant scenarios

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第1期23卷 42-57页

作者： Haslinda abdul hamid Vahid Hosseinpour SARMADI Vivek PRASAD Rajesh RAMASAMY Azizi MISKON Bio-artificial Organ and Regenerative Medicine Unit National Defense University of MalaysiaKuala Lumpur57000Malaysia Cellular and Molecular Research Centre Iran University of Medical SciencesTehran***Iran Institutes of Regenerative Medicine Iran University of Medical SciencesTehran***Iran Stem Cell and Immunity Research Group Immunology LaboratoryDepartment of PathologyFaculty of Medicine and Health SciencesUniversiti Putra Malaysia(UPM)Seri KembanganSelangor43400Malaysia

Mesenchymal stem/stromal cell(MSC)-based therapy has been regarded as one of the most revolutionary breakthroughs in the history of modern medicine owing to its myriad of immunoregulatory and regenerative *** the rapid progress in the fields of osteo-and musculoskeletal therapies,the demand for MSC-based treatment modalities is becoming increasingly *** this endeavor,researchers around the world have devised new and innovative techniques to support the proliferation of MSCs while minimizing the loss of hallmark features of stem *** such example is electromagnetic field(EMF)exposure,which is an alternative approach with promising *** this review,we present a critical discourse on the efficiency,practicability,and limitations of some of the relevant methods,with insurmountable evidence backing the implementation of EMF as a feasible strategy for the clinically relevant expansion of MSCs.

关键词： Electromagnetic field Proliferation Mesenchymal stem cell Therapy

High-temperature stress suppresses allene oxide cyclase 2 and causes male sterility in cotton by disrupting jasmonic acid signaling

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The Crop Journal 2023年第1期11卷 33-45页

作者： Aamir hamid Khan Yizan Ma Yuanlong Wu Adnan Akbar muhammad Shaban Abid Ullah Jinwu Deng abdul Saboor Khan Huabin Chi Longfu Zhu Xianlong Zhang Ling Min National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070HubeiChina Department of Botany University of MalakandDir Lower 18800Khyber PakhtunkwaPakistan

Cotton(Gossypium spp.) yield is reduced by stress. In this study, high temperature(HT) suppressed the expression of the jasmonic acid(JA) biosynthesis gene allene oxide cyclase 2(GhAOC2), reducing JA content and causing male sterility in the cotton HT-sensitive line H05. Anther sterility was reversed by exogenous application of methyl jasmonate(MeJA) to early buds. To elucidate the role of GhAOC2 in JA biosynthesis and identify its putative contribution to the anther response to HT, we created gene knockout cotton plants using the CRISPR/Cas9 system. Ghaoc2 mutant lines showed male-sterile flowers with reduced JA content in the anthers at the tetrad stage(TS), tapetum degradation stage(TDS), and anther dehiscence stage(ADS). Exogenous application of MeJA to early mutant buds(containing TS or TDS anthers) rescued the sterile pollen and indehiscent anther phenotypes, while ROS signals were reduced in ADS anthers. We propose that HT downregulates the expression of GhAOC2 in anthers, reducing JA biosynthesis and causing excessive ROS accumulation in anthers, leading to male sterility. These findings suggest exogenous JA application as a strategy for increasing male fertility in cotton under HT.

关键词： Cotton(Gossypium hirsutum) Jasmonic acid Allene oxide cyclase 2 ROS CRISPR/Cas9 High-temperature stress

Impact of the coronavirus disease 2019 pandemic on breastfeeding during and at discharge from neonatal care:An observational cohort study

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Pediatric Investigation 2022年第3期6卷 189-196页

作者： Haslina Binti abdul hamid Lisa SzatkowskiHelen Budge Shalini Ojha Lifespan and Population Health School of MedicineUniversity of NottinghamNottinghamUK Dietetic Programme Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala LumpurMalaysia Neonatal Unit University Hospitals of Derby and Burton NHS TrustDerbyUK

Importance:During the coronavirus disease 2019(COVID-19)lockdown,changes in the visiting rules in neonatal units might have affected the initiation and continuation of ***:To investigate the effects of the implementation of the COVID-19 lockdown in the UK on mother’s own milk(MOM)feeding in hospital and at the time of discharge in two UK neonatal ***:Retrospective cohort study using routinely recorded data from electronic patient *** were retrieved from two neonatal services in the UK East Midlands *** logistic regression was used to compare the odds of MOM feeding before,and after the implementation of the UK ***:Among 2073 infants,after adjusting for maternal and infant characteristics and underlying trends over time,there were no differences in the odds of infants receiving any MOM during admission;any MOM at discharge or exclusive MOM at discharge before and after the imposition of the *** with birthweight2500 g(adjusted odds ratio[OR]0.33,95%confidence interval[CI]:0.22–0.50).Younger mothers were less likely,and Black British mothers more likely,to be feeding MOM to their infants at discharge,while women in the least deprived Index of Multiple Deprivation(IMD)quintiles were 2–4 times more likely to do so,compared to those in the most deprived IMD quintile(adjusted OR 2.78,95%CI:1.97–3.90).Interpretation:Despite the difficulties faced during COVID-19 pandemic-induced restrictions,infants in the participating neonatal units continued to receive MOM in similar proportions as before the pandemic.

关键词： Breastfeeding COVID-19 Infant Newborn