نتایج جستجو برای: msn

تعداد نتایج: 1862  

A novel series of the Co/Zn-MSN catalysts with Si/Zn molar ratio of 10 and 1, 3, 5 and 7 wt% Cobalt (denoted by CZ-X-MSN) were synthesized using post-synthesis methods. The samples were characterized by XRD, SEM, FTIR, TEM and nitrogen sorption methods. With a constant Si/Zn ratio, the increase of cobalt species from 1 to 7 wt% led to decrease the catalysts surface area from 408 m2g-1 for CZ-1-...

In this study, a novel mesoporous silica nanoparticles drug carrier contributes to improving the solubility, dissolution, and the oral bioavailability of apigenin (AP). The apigenin of solid dispersion of mesoporous silica nanoparticles (AP-MSN) was prepared by physical absorption method and also, in-vitro drug release and in-vivo bioavailability performance were evaluated. Based on its solubil...

Journal: :international journal of nanoscience and nanotechnology 2015
a. bolouki l. rashidi e. vasheghani-farahani z. piravi-vanak

curcumin (cur) is a hydrophobic molecule and beneficial antioxidant with known anticancer property. the bioavailability of curcumin is low because of its hydrophobic structure. mesoporous silica nanoparticles (msn) loaded by cur were used as nanocarriers for sustained release of cur in four different media such as simulated gastric,intestinal, colon and body fluids (sgf, sif, scf, and sbf, resp...

In this study, a novel mesoporous silica nanoparticles drug carrier contributes to improving the solubility, dissolution, and the oral bioavailability of apigenin (AP). The apigenin of solid dispersion of mesoporous silica nanoparticles (AP-MSN) was prepared by physical absorption method and also, in-vitro drug release and in-vivo bioavailability performance were evaluated. Based on its solubil...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی شیمی 1394

امروزه مواد مزومتخلخل دارای هندسه منظم به دلیل توانایی و کارایی گسترده‏شان توجه بسیاری از دانشمندان و پژوهشگران را به خود جلب نموده است. در سال‏های اخیر استفاده از مزومتخلخل سیلیکا در زمینه دارویی و پزشکی به دو دلیل: توانایی بازسازی بافت استخوان و توانایی های حمل دارو بررسی شده است. اصلاح سطح نانوذرات مزومتخلخل سیلیکا به منظور بهبود خواص فیزیکی و شیمیایی آن ها انجام می‏شود. در این پژوهش، نانوذر...

Journal: :Journal of nanotechnology research 2021

Several nanocomposites based on Mesoporous Silica Nanoparticles (MSN), aluminum ions, and Polyethyleneimine (PEI) were synthesized by the combination of sol-gel post-synthesis methods. These mainly composed MSN with leading Al PEI species alone or in combination. The Al-MSN, MSN-PEI, Al-MSN/PEI samples characterized using FT-IR, XRD, SEM, EDX, zeta potential, nitrogen physisorption techniques. ...

Journal: :Journal of Nanobiotechnology 2021

Abstract Background A low pH environment is created due to the production of acids by oral biofilms that further leads dissolution hydroxyapatite crystal in tooth structure significantly altering equilibrium. Although overall bacterial counts may not be eradicated from cavity, however, synthesis engineered anti-bacterial materials are warranted reduce pathogenic impact biofilms. The purpose thi...

Journal: :Bioimpacts 2023

Introduction: Medications used to treat oral ulcers include corticosteroids, anesthetics, and antihistamines. These can be as gels, mouthwashes, pastes, ointments, etc. Diphenhydramine hydrochloride (DPH) has local anesthetic properties that help the aphthae. One of drawbacks delivery transmucosal is quick turnaround time gel, a mucous form located on epithelial film surface. Methods: Therefore...

A. Bolouki E. Vasheghani-Farahani L. Rashidi Z. Piravi-Vanak

Curcumin (CUR) is a hydrophobic molecule and beneficial antioxidant with known anticancer property. The bioavailability of curcumin is low because of its hydrophobic structure. Mesoporous silica nanoparticles (MSN) loaded by CUR were used as nanocarriers for sustained release of CUR in four different media such as simulated gastric,intestinal, colon and body fluids (SGF, SIF, SCF, and SBF, ...

Journal: :Open Mathematics 2022

Abstract A finite group G G is called an MSN-group if all maximal subgroups of the Sylow are subnormal in . In this article, we investigate structure groups such that a non-MSN-group even order which every subgroup MSN-group. addition, determine minimal simple whose second MSN-groups.

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