نتایج جستجو برای: آلودگی غیرنقطه ای nps

تعداد نتایج: 263005  

2016
Nisha Shabnam P. Sharmila Hyunook Kim P. Pardha-Saradhi

The unique potential of chloroplasts/thylakoids to harness light energy to transport electrons from H2O to various entities was exploited for reduction of Ag+ to generate nanoparticles (NPs). Spinach thylakoids/chloroplasts turned AgNO3 solutions brown in light, but not in dark. Besides showing Ag-NPs specific surface plasmon resonance band, these brown solutions showed presence of 5-30 nm crys...

Journal: :Molecules 2016
Mohammed Rafi Shaik Ghadeer H Albalawi Shams Tabrez Khan Merajuddin Khan Syed Farooq Adil Mufsir Kuniyil Abdulrahman Al-Warthan Mohammed Rafiq H Siddiqui Hamad Z Alkhathlan Mujeeb Khan

Microbicidal potential of silver nanoparticles (Ag-NPs) can be drastically improved by improving their solubility or wettability in the aqueous medium. In the present study, we report the synthesis of both green and chemical synthesis of Ag-NPs, and evaluate the effect of the dispersion qualities of as-prepared Ag-NPs from both methods on their antimicrobial activities. The green synthesis of A...

1992
Allan Ramsay

We propose a simple, intuitively satisfying t reatment of the semantics of bare plural NPs. This t reatment avoids the use of nons tandard logics, and avoids the need for systematic ambiguity of verb semantics.

2016
Wei Ji Diqi Zhu Yiwei Chen Jingjing Hu Fen Li

Objective: The present report describes the green synthesis of Zinc oxide nanoparticles (ZnO NPs) using Argemone maxicana leaf extract by an eco-friendly approach. Also, the in-vitro cytotoxicity of prepared ZnO NPs against the cardiac cell lines of Sahul India Catla catla fish (SICH) was studied. Methods: ZnO NPs were prepared by using Argemone maxicana leaf extract as reducing and stabilizing...

2010
Yue Tang Hao Zhang Zhanxi Fan Minjie Li Jishu Han Fengxia Dong Bai Yang

In this study, we investigated the size and photoluminescence (PL) evolution of CdTe nanoparticles (NPs) in different polymer media under thermal annealing. A quick growth and maintenance of strong PL were observed. By analyzing the transmission electron microscopy (TEM) images of NPs in polymer media, we discovered that the size evolution of NPs was the combination of Ostwald ripening and dyna...

2018
Lin Xin Hou-Ting Zhang Wei-Feng Yang Yi-Fan Li Chuan Liu

PEG-PLGA nanoparticles (NPs) modified with anti-CD133 and tumor-targeting single-chain antibody fragment (scFV-NPs) for systemic delivery of methioninase (METase) and pemetrexed for gastric carcinoma were successfully formulated. The structure characterization and biological functions of METase-pemetrexed-loaded scFV-PEG-PLGA NPs (scFV-METase/pemetrexed-NPs) in vitro were investigated. Function...

Journal: :International journal of clinical and experimental medicine 2015
Xiaolong Tang Ronghong Jiao Chunmei Xie Lifa Xu Zhen Huo Jingjing Dai Yunyun Qian Weiwen Xu Wei Hou Jiang Wang Yong Liang

To develop amphotericin B-loaded biodegradable TPGS-b-(PCL-ran-PGA) nanoparticles (PLGA-TPGS-AMB NPs) for fungal infection treatment, PLGA-TPGS NPs and PLGA NPs were synthesized by a modified double emulsion method and characterized in terms of size and size distribution, morphology and zeta potential. Drug encapsulation efficiency, in vitro drug release, and in vitro/vivo tests against Candida...

Journal: :Physical chemistry chemical physics : PCCP 2010
Yue Tang Hao Zhang Zhanxi Fan Minjie Li Jishu Han Fengxia Dong Bai Yang

In this study, we investigated the size and photoluminescence (PL) evolution of CdTe nanoparticles (NPs) in different polymer media under thermal annealing. A quick growth and maintenance of strong PL were observed. By analyzing the transmission electron microscopy (TEM) images of NPs in polymer media, we discovered that the size evolution of NPs was the combination of Ostwald ripening and dyna...

Journal: :nanomedicine journal 0
fatemeh nakhjiri department of biology, payame noor university, iran mahboubeh mirhosseini department of biology, payame noor university, iran malihe alsadat mozaheb technical and vocational university of hazratroghayeh, yazd, iran

objective(s): silver nanoparticles (ag nps) are not only specific physical and chemical properties but also are considered for their antibacterial activity and ecofriendly.materials and methods:in this study a simple, cost effective biologically method for ag+reducing to ag nps using echinops extractas a stabilizer, and reducing agent.ag nps were analyzed using uv-vis spectrometry,tem, xrd and ...

Journal: :iranian journal of basic medical sciences 0
maryam shafagh department of biology and institute of biotechnology, faculty of sciences, urmia university, urmia, iran fatemeh rahmani department of biology and institute of biotechnology, faculty of sciences, urmia university, urmia, iran norouz delirezh microbiology department, faculty of veterinary medicine, urmia university, urmia, iran

objective(s): this study focused on determining cytotoxic effects of copper oxide nanoparticles (cuo nps) on chronic myeloid leukemia (cml) k562 cell line in a cell-specific manner and its possible mechanism of cell death. we investigated the cytotoxicity of cuo nps against k562 cell line (cancerous cell) and peripheral blood mononuclear cell (normal cell). materials and methods: the toxicity w...

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