نتایج جستجو برای: نانوذرات pamam
تعداد نتایج: 8240 فیلتر نتایج به سال:
به دلیل حلالیت بسیار زیاد نیترات در آب، روش‌های متداول تصفیه قادر به حذف آن نیستند. این پژوهش با هدف تعیین کارایی نانوکامپوزیت عاملدار شده PAMAM-Go به‌منظور حذف نیترات از محیط‌های آبی در مقیاس آزمایشگاهی و به‌صورت پایلوت و برای اولین بار در ایران و جهان انجام شد. در این پژوهش سنتز گرافن اکساید به‌روش اصلاح شده هومر صورت...
Background: Nanoscale poly (amidoamine) dendrimers have been investigated for their biological demands, but their antibacterial activity has not been widely discovered. Thus, the sixth generation of poly (amidoamine) dendrimer (PAMAM-G6) was synthesized and its antibacterial activities were evaluated on Gram-negative bacteria; P. aeruginosa, E. coli, A. baumannii, S. typhimur...
In recent years, chitosan and its different derivatives have been extensively used in surface modification and functional finishing of textiles. In this study, wool yarns used in handmade carpet were treated with different concentrations of chitosan-poly (amidoamine) dendrimer hybrid (Ch-PAMAM) and characterized by scanning electron microscope (SEM), and their dyeing properties were investi...
چکیده: از آن جایی که داروهای ضد سرطان قابلیت انحلال کمی در آب دارند و از طرفی معرف هایی که برای افزایش انحلال آن ها استفاده می شود خود اثرات سمی بر روی بخش های سالم بدن دارند لذا در این پایان نامه تلاش بر این است تا سیستم های دارورسانی نوینی بر پایه نانولوله های کربنی که کاربردهای گسترده آن ها امروزه در زمینه های زیادی اثبات شده است طراحی گردد. در نخستین بخش از این کار تحقیقاتی نانومواد هیبرید...
Genuine, nondegraded PAMAM dendrimers self-assemble with siRNA into nanoscale particles that are efficient for siRNA delivery and induce potent endogenous gene silencing.
Accidental exposure to uranium is a matter of concern, as U(VI) is nephrotoxic in both human and animal models, and its toxicity is associated to chemical toxicity instead of radioactivity. We synthesized different PAMAM G4 and G5 derivatives in order to prove their interaction with uranium and their effect on the viability of red blood cells in vitro. Furthermore, we prove the effectiveness of...
Control of particle-particle spacing is a key determinant of optical, electronic, and magnetic properties of nanocomposite materials. We have used poly(amidoamine) (PAMAM) dendrimers to assemble carboxylic acid-functionalized mixed monolayer protected clusters (MMPCs) through acid/base chemistry between the particle and dendrimer. Small angle X-ray scattering was then used to establish average ...
Here, we report the use of amine-terminated poly(amidoamine) (PAMAM) dendrimers as adhesion promoters between vapor-deposited Au films and Si-based substrates. This method is relatively simple, requiring only substrate cleaning, dipping, and rinsing. Proof of concept is illustrated by coating glass slides and single-crystal Si wafers with monolayers of PAMAM dendrimers and then evaporating adhe...
The study and utilization of bionanomotors represents a rapid and progressing field of nanobiotechnology. Here, we demonstrate that poly(amidoamine) (PAMAM) dendrimers are capable of supporting heavy meromyosin dependent actin motility of similar quality to that observed using nitrocellulose, and that microcontact printing of PAMAM dendrimers can be exploited to produce tracks of active myosin ...
PAMAM dendrimer-RGD-4C peptide conjugate was synthesized and in vitro targeting efficacy to integrin receptor expressing cells was studied by flow cytometry and confocal microscopy.
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