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Siyamak Safapour,Majid Mazhar,Saiedeh Abedinpour 한국섬유공학회 2023 Fibers and polymers Vol.24 No.9
Reseda luteola L., commonly known as weld, is an important source of yellow natural dye used for dyeing the wool textiles since ancient times. In this study, to develop the color shades of weld on wool textiles, single and binary combinations of eight metal mordants, i.e., Al, Fe, Cu, Co, Zn, Sn, Ni, and Cr were explored using the premordanting method. Depending on the type and nature of mordant in the mixture, substantial variations in the color shades, lightness, color strength, and fastness of the samples resulted. In addition to metal mordants that individually improved color strength, color fastness and produced various color shades, binary mordanting showed several novel features in terms of the development of new color shades, the synergistic effect of dye uptake (color strength), and color fastness, etc. Furthermore, several rare or unique shades of high-cost and toxic mordants, such as Cr, could be reproduced using alternative binary low-cost and non- or less toxic mordants, such as Fe and Cu.
Chorea as a Presentation of SARS-CoV-2 Encephalitis: A Clinical Case Report
Muhammad Hassan,Fibhaa Syed,Liaqat Ali,Haris Majid Rajput,Farhan Faisal,Waleed Shahzad,Mazhar Badshah 대한파킨슨병및이상운동질환학회 2021 Journal Of Movement Disorders Vol.14 No.3
Central nervous system (CNS) involvement in SARS-CoV-2 is now a known fact, likely due to viral transmission through the olfactory nerve and high brainstem viral load, which also suggests dissemination in the ambiguus and solitary nuclei from the respiratory tract via the vagus nerve
Hamed Forootan,Kamaladin Gharanjig,Ebrahim Ghasemi,Majid Mazhar,Aylin Gharanjik,Shima Jahankaran 한국섬유공학회 2023 Fibers and polymers Vol.24 No.2
Two novel perylene-based acid dyes were synthesized to produce fluorescent polyamide fabrics. The dyes were made by reactingperylene-3,4,9,10-tetracarboxylic acid dianhydride (PTCA) with sulfanilic acid and 1-amino-8-hydroxy-3,6-naphthalenedisulfonic acid (H-acid) in imidazole as a solvent. FTIR, 1HNMR, UV–Vis, elemental analysis, and spectro-luminescencewere used to characterize the synthesized dyes. Dyes with approximately similar maximum wavelengths had molar absorptioncoefficients of 42,996 and 8636 l mol-1 cm-11 in water. The dyes showed a negative solvatochromism effect with changing thepolarity of solvents from water to methanol. Also, the sulfanilic acid-based dye had a higher quantum efficiency (φ = 0.79)and stokes shift (1999 cm-1) than the H-acid-based dye in water. The DFT method analyzed the synthesized dyes' HOMO,LUMO, bandgap, dihedral angles, and angle of substitution. Both dyes had the same bandgap and dihedral angles. Substitutedsulfanilic acid derivative had more planar structure than H-acid derivative. The synthesized molecules were used to dyepolyamide fabrics. Dyeing kinetics were based on pseudo-second-order and Langmuir isotherms. Also, the sulfanilic-acidderivative had more build-up on polyamide fabrics. According to fabric fastness tests, synthetic dyes had excellent washingand rubbing stability but weak to moderate light fastness. Finally, the fluorescent properties of dyed fabrics were obtained.