http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Nadher D. Radia (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Aseel M. Aljeboree,Nadher D. Radia,Layth Sameer Jasim,Abdulrahman A. Alwarthan,Mustafa M. Khadhim,Abbas Washeel Salman,Ayad F. Alkaim 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
New SA-g-P(AAc-co-MA)/TiO2 nanocomposite was synthesized using the free radical graft copolymerizationtechnique. The synthesized nanocomposite was characterized using FTIR, FE-SEM, XRD, TEM, TGA,and BET techniques. It was then utilized as an adsorbent for removing the Brilliant green (BG) dye froman aqueous solution. The effect of different factors like the initial concentration of the BG dye, pH of thesolution, and temperature have been studied. The experimental results were analyzed via the isothermFreundlich and Langmuir adsorption models. To have deep insight into the adsorption mechanism, thedensity functional theory (DFT) method was used. According to the analyses, the equilibrium results fittedcompletely with Freundlich isotherm; thus, the pseudo-first-order and pseudo-second-order kineticsand intra-particle diffusion models were utilized to determine the adsorption kinetic result. The optimalconditions for the studied parameters which revealed the highest adsorption were: T = 30 C, pH = 3,DGo = 6.87 kJ.mol1, DHo = 15.788 kJ.mol1, and DSo = 93.92 J.mol1.K1. The kinetics adsorptionwas consistent with the pseudo-second-order kinetic model, and the above-mentioned thermodynamicsvariables, DGo, DHo, and DSo, suggested that the adsorption of Brilliant green dye on synthesizednanocomposite was spontaneous and endothermic.
-
Alzayd Asawer A. Mhammed,Radia Nadher D. 한국탄소학회 2024 Carbon Letters Vol.34 No.1
A semi-natural composite of κ-carrageenan and bentonite, two natural biopolymers, was synthesized through free radical polymerization. This synthesis aimed to obtain a biodegradable, biocompatible, and swellable composite that is environmentally friendly. The components used in this synthesis are readily available, making it economically feasible and promising for potential biomedical applications. The composite is pH-responsive and intended for oral delivery of metformin hydrochloride and aminophylline, which have low bioavailability and undesirable side effects, respectively. The organic composite exhibits the advantage of reducing drug release in the acidic gastric medium. This composite is a stimuli-responsive polymeric material that has garnered significant attention in recent years for its application in oral drug delivery systems. These materials enable site-specific and controlled drug release while minimizing toxicity. The carrageenan-g-poly(acrylamide-co-acrylic acid)/bentonite composite was characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FE-SEM), which confirmed the successful synthesis of the composite. The swelling behaviour and point of zero charge of the composite were studied at different pH values, which showed a strong influence on the swelling properties of the composite. The drug loading capacity of the composite was measured at pH 5.3, and it was 70.60 mg/g for metformin and 95.66 mg/g for aminophylline at pH(3). The in vitro release profile of both drugs from the composite was also affected by the ionic strength, and it exhibited a lower release rate with higher salt concentration. The maximum release percentage of the drugs from carrageenan-g-poly(acrylic acid-acrylamide)/bentonite in simulated gastric, intestinal, and colon fluids was achieved within 40 h. The maximum release was 80% for metformin in simulated intestinal fluid (SIF) and 75% for aminophylline after 40 h.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
