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In VitroMicropropagation of a Valuable Medicinal Plant, Plectranthus amboinicus

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American Journal of Plant Sciences 2015年第8期6卷 1091-1097页

作者： Zuraida ab rahman Erny Sabrina mohd Noor mohd Shukri Mat Ali Razali Mirad Ayu Nazreena Othman Biotechnology Research Centre MARDI Headquarters MARDI HQ Persiaran MARDI-UPM Serdang Malaysia Strategic Resource Centre MARDI HQ Persiaran MARDI-UPM Serdang Malaysia

The effect of the plant growth regulators benzyl amino purine (BAP), 1-naphthaleneacetic acid (NAA) and kinetin (KIN) on in vitro shoot induction and proliferation of Plectranthus amboinicus was examined. Explants obtained from lateral shoots and apical shoots of P. amboinicus were inoculated on Murashige and Skoog (MS) culture medium supplemented with different concentrations of BAP, NAA and KIN. When the effect of each growth regulator was considered singly, the highest rate of shoot induction (80% of explants producing shoots) and highest number of shoots produced (2.4 shoots per explant) were obtained from lateral shoot explants cultured on MS media supplemented with 3.0 mg/L BAP within 6 - 7 weeks. Better results were obtained using MS medium supplemented with 1 mg/L BAP + 5 mg/L NAA. Shoot proliferation rose to 85%, while 5.7 shoots per explants were recorded. Among the different media tested for rooting, MS medium supplemented with 1.0 mg/L IBA was the most effective for root induction. The quality of the roots obtained was better than that obtained using MS media supplemented with NAA or IAA.

关键词： Plectranthus amboinicus Micropropagation Medicinal Plant Plant Growth Regulator

Impact of electromagnetic radiation exposure during pregnancy on embryonic skeletal development in rats

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Asian pacific Journal of Reproduction 2017年第3期6卷 104-111页

作者： Ali SAEEDHAlchalabi Erkihun Aklilu abd rahman Aziz Hasliza Rahim Suzanna HRonald mohd FMalek mohd Azam Khan Faculty of Veterinary Medicine UMK City CampusPengkalan ChepaLocked Bag3616100Kota BharuKelantanMalaysia Veterinary Medicine College Mosul UniversityMosulIraq School of Electrical System Engineering University Malaysia Perlis(UniMAP)Pauh Putra02600ArauPerlisMalaysia University of Wollongong DubaiUnited Arab Emirates

Objective:To evaluate the teratogenic effect of mobile phone radiation exposure during pregnancy on embryonic skeletal development at the common used mobile phone frequency in our ***:Sixty female Sprague-Dawley rats were distributed into three experiment groups;control and two exposed groups (1 h/day, 2 h/day exposure groups) (n=20/ each group) and exposed to whole body radiation during gestation period from day 1- day 20. Electromagnetic radiofrequency signal generator was used to generate 1800 MHz GSM-like signals at specific absorption rate value 0.974 W/kg. Animals were exposed during experiment in an especial designed Plexiglas box (60 cm× 40 cm× 30 cm). At the end of exposure duration at day 20 of pregnancy animals were sacrificed and foetuses were removed, washed with normal saline and processed to Alizarin red and Alcian blue stain. Skeleton specimens were examined under a stereo microscope and skeleton's snaps were being carefully captured by built in camera fixed on the stereo ***:Intrauterine exposure to electromagneticradiation lead to variation in degree of ossification, mineralization, formation of certain parts of the skeleton majorly in head and lesser in other parts. Deformity and absence of formation of certain bones in the head, ribs, and coccygeal vertebrae were recorded in skeleton of foetuses from exposed dams compare to control ***:The electromagnetic radiation exposure during pregnancy alter the processes of bone mineralization and the intensity of bone turnover processes, and thus impact embryonic skeleton formation and development directly.

关键词： GSM electromagnetic radiation Embryonic development Bone turnover processes Pregnant rats

Role of T cells in cancer immunotherapy:Opportunities and challenges

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Cancer Pathogenesis and Therapy 2023年第2期1卷 116-126页

作者： Hossain Ahmed Aar Rafi Mahmud mohd.Faijanur-Rob-Siddiquee Asif Shahriar Partha Biswas Ebrahim Khalil Shimul Shahlaa Zernaz Ahmed Tanzila Ismail Ema Nova rahman Arif Khan Furkanur Rahaman Mizan Talha Bin Emran Department of Biotechnology and Genetic Engineering University of Development Alternative(UODA)4/4BBlock ALalmatiaDhaka1209Bangladesh Department of Biochemistry and Molecular Biology Mawlana Bhashani Science and Technology UniversityTangail1902Bangladesh Department of Biochemistry and Molecular Biology Faculty of Biological ScienceUniversity of DhakaDhaka1000Bangladesh Department of Immunology and Microbiology School of MedicineUniversity of Texas Rio Grande ValleyMcAllenTX78504USA Department of Genetic Engineering and Biotechnology Faculty of Biological Science and TechnologyJashore University of Science and Technology(JUST)Jashore7408Bangladesh Department of Biochemistry and Microbiology North South UniversityDhaka1229Bangladesh Department of Biochemistry and Molecular Biology Jahangirnagar UniversitySavarDhaka1342Bangladesh Department of Food Science and Technology Chung-Ang UniversityAnseong17546Republic of Korea Department of Pharmacy BGC Trust University BangladeshChittagong4381Bangladesh Department of Pharmacy Faculty of Allied Health SciencesDaffodil International UniversityDhaka1207Bangladesh

Immunotherapies boosting the immune system's ability to target cancer cells are promising for the treatment of various tumor types,yet clinical responses differ among patients and ***,there has been increasing interest in novel cancer immunotherapy practices aimed at triggering T cell-mediated anti-tumor ***-directed cytotoxicity mediated by T lymphocytes has become a central focal point in the battle against cancer utilizing the immune *** molecular and cellular mechanisms involved in the actions of T lymphocytes have directed new therapeutic approaches in cancer immunotherapy,including checkpoint blockade,adoptive and chimeric antigen receptor(CAR)T cell therapy,and cancer *** review addresses all the strategies targeting tumor pathogenesis,including metabolic pathways,to evaluate the clinical significance of current and future immunotherapies for patients with cancer,which are further engaged in T cell activation,differentiation,and response against tumors.

关键词： Immunotherapy T cell Cancer Immune system Metabolic pathways

Fabrication and characterization of affordable hydrophobic ceramic hollow fibre membrane for contacting processes

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Journal of Advanced Ceramics 2017年第4期6卷 330-340页

作者： Mohammed abdulmunem abDULHAMEED mohd Hafiz Dzarfan OTHMAN Haider Nadhom Azziz Al JODA Ahmad Fauzi ISMAIL Takeshi MATSUURA Zawati HARUN Mukhlis A.rahman mohd Hafiz PUTEH Juhana JAAFAR Advanced Membrane Technology Research Centre(AMTEC) Faculty of Chemical and Energy EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia Department of Petroleum and Petrochemical Engineering Engineering CollegeKerbala University56001 KerbalaIraq Department of Chemical and Biological Engineering University of OttawaOttawaOntarioK1N 6N5Canada Advanced Manufacturing&Materials Centre(AMMC) Faculty of Mechanical and Manufacturing EngineeringUniversiti Tun Hussein Onn MalaysiaParit Raja86400 Batu PahatJohorMalaysia Department of Environmental Engineering Faculty of Civil EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia

Affordable hydrophobic hollow fibre membranes were prepared using kaolin and alumina based ceramic powders via a combined phase inversion and sintering technique,followed by a grafting with fluoroalkylsilane(FAS).The crux of the matter in this paper is to study the changes in the properties of the hollow fibre membranes(gas permeation,mechanical strength,pore size,porosity,tortuosity,morphology,and contact angle)by the addition of alumina(Al2O3)to the pure kaolin with mono or multiparticle *** varying the overall loading and particle size of alumina addition,different morphologies of the membranes were obtained due to the differences in the path lengths during phase inversion process for each solvent and nonsolvent *** successful grafting with FAS was evidenced by the increase in contact angle from nearly equal to zero degree before grafting to 140°after ***-alumina-4,one of the hollow fibres fabricated in this work,achieved a mean pore size of 0.25μm with the bending strength of 96.4 MPa and high nitrogen permeance of 2.3×10^(-5) mol·m^(-2)·Pa^(-1)·s^(-1),which makes the hollow fibre most suitable for the membrane contactor application.

关键词： ceramic membrane contactor hollow fibre kaolin hydrophobic

Development of Vehicle Lane Changing Model in Approaching the U-Turn Facility Road Segment

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Journal of Traffic and Transportation Engineering 2017年第6期5卷 308-315页

作者： mohd Shafie Nemmang rahman rahman Faculty of Civil and Environmental Engineering Universiti Tun Hussein Onn Malaysia 86400 Batu Pahat dohor Malaysia Department of lnfrastrueture and Geomatic Engineering Faculty of Civil and Environmental Engineering Universiti Tun HusseinOnn Malaysia 86400 Batu Pahat Johor Malaysia

Successful treatment of epithelial downgrowth with endoscopic photocoagulation and intracameral 5-fluorouracil after prolonged limbal wound leak

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International Journal of Ophthalmology(English edition) 2018年第4期11卷 703-704页

作者： Zakaria abdollah Aida Zairani mohd Zahidin Amin Ahem Ropilah abdul rahman Norshamsiah Md Din Department of Ophthalmology Universiti Kebangsaan Malaysia Medical Centre Kulliyyah of Medicine University College of Insaniah

Dear Editor,Epithelial downgrowth（EDG）is an uncommon and serious complication of intraocular surgery and trauma[1].It is recognized clinically by a translucent membrane on the corneal endothelium or *** of EDG is controversial and generally has a low success *** treatment modalities have been invasive and damaging to the anatomy of the eye[1].

关键词： ECP Successful treatment of epithelial downgrowth with endoscopic photocoagulation and intracameral 5-fluorouracil after prolonged limbal wound leak EDG Figure

Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane

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Journal of Natural Gas Chemistry 2006年第4期15卷 266-270页

作者： Kong Bee Hong Aidawati Azlin Binti Ismail Mohamed Ezzaham Bin mohd Mahayuddin abdul rahman Mohamed Sharif Hussein Sharif Zein School of Chemical Engineering Engineering CampusUniversiti Sains Malaysia14300 Nibong TebalSeberang Perai SelatanPulau PinangMalaysia

Acid-based purification process of multi-walled carbon nanotubes （MWNTs） produced via catalytic decomposition of methane with NiO/TiO2 as a catalyst is described. By combining the oxidation in air and the acid refluxes, the impurities, such as amorphous carbon, carbon nanoparticles, and the NiO/TiO2 catalyst, are eliminated. Scanning electron microscopy （SEM） and transmission electron microscopy （TEM） images confirm the removal of the impurities. The percentage of the carbon nanotubes purity was analyzed using thermal gravimetric analysis （TGA）. Using this process, 99.9 wt% purity of MWNTs was obtained.

关键词： multi-walled carbon nanotubes purification acid refluxes oxidation methane decomposition

Optimizing Extraction of Phenolics and Flavonoids from Solanum feroxFruit

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Natural Science 2019年第4期11卷 99-105页

作者： Zuraida ab rahman mohd Waznul Adly mohd Zaidan Ayu Nazreena Othman Muhamad Aizuddin Ahmad Sanimah Simoh Muhammad Aiman Haiqal Ismail Biotechnology & Nanotechnology Research Centre MARDI HQ Serdang Malaysia

Various phenolic and flavonoid compounds that are secondary plant metabolites are known to contribute to physiological wellbeing. Extraction efficiency of such compounds from plant sources is dependent on the extraction solvent type and composition, and its pH. In this study, different extraction variables were examined: heating time (20 to 180 min), temperature (60°C, 75°C and 90°C) and pH (2.5, 3.0, 4.0, 5.0, 6.0 and 7.0). Hot water was used in the extraction of dry samples. For phenolics, the most efficient extraction was by using water at 60°C for 180 min, whereby 5.95 mg GA equivalent/dry extract was achieved. The most efficient extraction of flavonoids was achieved with water at 60°C for 150 min, whereby 43 μg Quercetin equivalent/dry extract was obtained. Adjusting the solvent to pH 2.5 increased the yield to 45.3 μg Quercetin equivalent/dry extract.

关键词： Phenolics Flavonoid Solanum ferox

Effect of Microwave Power and Clamping Pressure on the Microwave Welding of Polypropylene Using Silicon Carbide Nanowhiskers as Microwave Susceptor

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Chinese Journal of Polymer Science 2022年第11期40卷 1466-1481页

作者： Phey Yee Foong Chun Hong Voon Bee Ying Lim Pei Leng Teh mohd Afendi Bin Rojan Nor Azizah Parmin Subash C.B.Gopinath mohd Khairuddin Md Arshad Foo Wah Low Savisha Mahalingam abreeza Manap Ruslinda A.Rahim Uda Hashim Institute of Nano Electronic Engineering Universiti Malaysia PerlisSeriabKangarPerlis01000Malaysia Faculty of Chemical Engineering Technology Universiti Malaysia PerlisJejawiPerlis Arau02600Malaysia Faculty of Mechanical Engineering Technology Universiti Malaysia PerlisPauhPerlis Arau02600Malaysia Department of Electrical&Electronic Engineering Lee Kong Chian Faculty of Engineering&ScienceUniversiti Tunku Abdul RahmanBandar Sungai LongKajangSelangor43000Malaysia Institute of Sustainable Energy Universiti Tenaga NasionalJalan IKRAM-UNITENKajangSelangor43000Malaysia

Due to their excellent dielectric properties and the rapid response to microwave irradiation,silicon carbide nanowhiskers(SiCNWs)were employed as microwave susceptor in this study to absorb microwave and locally melt the surrounding polypropylene(PP)substrates for the joining of PP *** welded joint is formed after the melted PP was cooled and *** than microwave susceptor,SiCNWs also acted as the nanofillers in strengthening the welded joint through the formation of SiCNWs reinforced PP nanocomposite at the interface of PP ***,the effect of microwave power on the microwave welding of PP substrates using SiCNWs as susceptor was studied and *** was found that the tensile strength and modulus of elasticity of the welded joint improved as microwave power ***,it deteriorates the flexibility of the welded joint as high stiffness SiCNWs were incorporated deeper into the PP matrix which restricted the PP chain *** from microwave power,clamping pressure is also critical in determining the mechanical properties of a welded *** compared to unclamped welded joint,the tensile strength,modulus of elasticity and flexibility of welded joint subjected to clamping pressure improved ***,the tensile strength of welded joint increased when the clamping pressure was increased from P1 to P3,but decreased when the clamping pressure was further increased to P4 due to the occurrence of flashing at welded *** formation mechanism of SiCNWs reinforced PP welded joint was also proposed in this *** to conventional welding,this welding process is easy,straightforward and is able to produce welded joint with outstanding mechanical properties via precise controlling of the processing ***,microwave welding is thought to offer an option for the joining of thermoplastics and other applications.

关键词： Microwave welding Silicon carbide Nanowhiskers Joining Susceptor