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Effect of Ni-doping on coloring and photocatalytic performance of MgTi2O5 nanoceramics
Moksodur Rahman,Md. Lutfor Rahman,Bristy Biswas,Md. Farid Ahmed,Md. Aftab Ali Shaikh,Shirin Akter Jahan,Nahid Sharmin 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
The Ni-doped MgTi2O5 has been synthesized by sol–gel method and investigated the effect of sinteringwith %Ni content. The heat inspection of intermediate products was done at 1000–1400 C. The structuralproperties of synthesized samples were studied by various methods viz. simultaneous thermal analysis(TGA-DTG), Powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), Scanningelectron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS), Zeta Sizer, and UV–VisNIR spectroscopy. The crystallite size of the obtained samples was determined from PXRD analysis usingClassical Scherrer formulae, modified Scherrer model, Williamson–Hall method, and size-strain plotequation. Unit cell parameter was determined precisely from PXRD data based on Rietveld refinementanalysis, which confirmed insertion of Ni2+ ions into the MgTi2O5 structure by decreasing unit cell parameters. Particle size was measured using dynamic light scattering and laser diffraction techniques. Opticalparameter analysis reveals that nano-pigments with narrow bandgap energy were suitable for photocatalysis. Ni0.6Mg0.4Ti2O5 sintered at 1400 C exhibits highest photocatalytic activity (93%) within120 min solar light irradiation. Color properties of the samples were determined from DRS measurementusing CIE-L*a*b* software. The obtained outcomes confirmed that the optical, photocatalytic and colorproperties of prepared samples improved with increasing Ni-contents.
Characterization and mapping of d13, a dwarfing mutant gene, in rice
Md. Babul Akter,Rihua Piao,Reflinur,Md. Lutfor Rahman,이윤주,서정환,김백기,고희종 한국유전학회 2015 Genes & Genomics Vol.37 No.11
Plant height is one of the most important agronomic traits in crop breeding because dwarf and semidwarf cultivars are resistant to lodging and have led to remarkable yield increases in cereal crops. Although several genes related to gibberellins signaling or biosynthesis resulting in dwarfism have been isolated, however, lots of causal genes controlling dwarfism remain to be uncovered. We characterized a dwarf mutant (ID13) in rice. The mutant displayed several altered phenotypes compared to the wild type, such as reduced plant height, increased tiller number, short and rounded leaf tips, presence of a yellowish stripe on the leaf blade, late and asynchronous heading, strong root systems, short erect panicle, smaller seed size, etc. The dwarfism of the mutant was responsive to gibberellic acid (GA), based on the analyses of two GAmediated processes. Anatomical observations revealed that the mutant plants had fewer vascular bundles and reduced cell size compared with wild type plants. Genetic analysis indicated that the dwarf mutant was controlled by a single recessive gene, d13, which was flanked by two STS markers, DMR-3 and S5789, within the physical distance of 265 kb around the centromeric region on chromosome 9. Cloning and functional analysis is in progress.
Abu Taher,이동진,이익모,Md. Lutfor Rahman,Md. Shaheen Sarker 대한화학회 2016 Bulletin of the Korean Chemical Society Vol.37 No.9
An efficient reduced graphene oxide-supported heterogenized palladium complex with pyrene-tagged ketoiminato ligand has been developed and used for cross-coupling of less reactive heteroaryl halides in water. Desirable catalytic activity was observed with high (up to 98%) conversion of the less reactive reactants under relatively mild conditions. The efficiency and green nature of the catalyst were confirmed without significant loss of activity.
Yongli Qiao,Wenzhu Jiang,Md Lutfor Rahman,추상호,Rihua Piao,Longzhi Han,고희종 한국분자세포생물학회 2008 Molecules and cells Vol.25 No.3
Comparison of maps and QTLs between populations may provide us with a better understanding of molecular maps and the inheritance of traits. We developed and used two reciprocal BC1F1 populations, IP/DS//IP and IP/DS//DS, for QTL analysis. DS (Dasanbyeo) is a Korean tongil-type cultivar (derived from an indica x japonica cross and similar to indica in its genetic makeup) and IP (Ilpumbyeo) is a Korean japonica cultivar. We constructed two molecular linkage maps corresponding to each backcross population using 196 markers for each map. The length of each chromosome was longer in the IP/DS//IP population than in the IP/DS//DS population, indicating that more recombinants were produced in the IP/DS//IP population. Distorted segregation was observed for 44 and 19 marker loci for the IP/DS//IP and IP/DS//DS populations, respectively; these were mostly skewed in favor of the indica alleles. A total of 36 main effect QTLs (M-QTLs) and 15 digenic epistatic interactions (E-QTLs) were detected for the seven traits investigated. The phenotypic variation explained (PVE) by M-QTLs ranged from 3.4% to 88.2%. Total PVE of the M-QTLs for each trait was significantly higher than that of the E-QTLs. The total number of M-QTLs identified in the IP/DS//IP population was higher than in the IP/DS//DS population. However, the total PVE by the M-QTLs and E-QTLs together for each trait was similar in the two populations, suggesting that the two BC1F1 populations are equally useful for QTL analysis. Maps and QTLs in the two populations were compared. Eleven new QTLs were identified for SN, SF, GL, and GW in this study, and they will be valuable in marker-assisted selection, particularly for improving grain traits in tongil-type varieties.
Sabrina Yesmin Barsha,Miah Md. Akiful Haque,Md Utba Rashid,Mohammad Lutfor Rahman,Mohammad Ali Hossain,Sanjana Zaman,Elias Bhuiyan,Rahima Sultana,Mosharop Hossian,Mohammad Hayatun Nabi,Mohammad Delwer 대한백신학회 2021 Clinical and Experimental Vaccine Research Vol.10 No.3
A 77-year-old man with a past medical history of type 2 diabetes mellitus, peripheral neuropathy, and chronic obstructive pulmonary disease was admitted to the intensive care unit of Bangladesh Medical College Hospital with acute encephalopathy and non-ST segment elevation myocardial infarction (NSTEMI). The patient was on antidiabetic medicine along with H2 blocker and multivitamins for his existing diseases. The patient’s attendant reported that the patient had received his first dose of the Moderna coronavirus disease 2019 (COVID-19) vaccine just 2 days ago. Physical examination revealed that he had a Glasgow Coma Scale of 8/15; a pulse of 106 beats/min; a respiratory rate of 30 breaths/min; oxygen saturation of 80% on room air, which became with 10 L of oxygen and blood pressure of 90/60 mm Hg at the time of admission. During the hospital stay, the patient was treated conservatively with intravenous antibiotics and other necessary medication. Although we have observed the onset of encephalopathy and NSTEMI following COVID vaccination for this patient, we, as healthcare professionals, cannot directly attribute the cause of the complications to the Moderna vaccine without further epidemiological studies with large samples.