Journal of Nanomaterials & Molecular Nanotechnology最新文献_第10页

Highly Thermal Conductive CuO Nanoparticle Synthesis Using Aloe-vera Leaf Extract 利用芦荟叶提取物合成高导热CuO纳米颗粒

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-08-22 DOI: 10.4172/2324-8777.1000223

P. Meena, R. Ch, Prajapat, Ramvir Singh, I. Jain, V. K. Sharma

引用次数: 1

Bismuth Sulfide Nanoparticles as a Complement to Traditional Iodinated Contrast Agents at Various X-Ray Computed Tomography Tube Potentials 硫化铋纳米颗粒作为传统碘化造影剂在各种x射线计算机断层扫描管电位的补充

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-08-16 DOI: 10.4172/2324-8777.1000222

M. Algethami, A. Blencowe, B. Feltis, M. Geso

{"title":"Bismuth Sulfide Nanoparticles as a Complement to Traditional Iodinated Contrast Agents at Various X-Ray Computed Tomography Tube Potentials","authors":"M. Algethami, A. Blencowe, B. Feltis, M. Geso","doi":"10.4172/2324-8777.1000222","DOIUrl":"https://doi.org/10.4172/2324-8777.1000222","url":null,"abstract":"Background: Investigation of the contrast enhancement effects on the CT images of the conventional iodinated contrast media (CM) or bismuth sulfide nanoparticles (Bi2S3 NPs) with increasing x-ray tube potentials. \u0000Materials and methods: A phantom was filled with iodinated CM or Bi2S3 NP solutions at concentrations ranging from 0 to 65 mM and the phantom was scanned with a CT scanner using tube potentials of 80, 100, 120 and 140 kVp at a fixed current of 200 mA. The CT contrast enhancement and contrast-to-noise ratios (CNR) of all scanned images were calculated. \u0000Results: This study demonstrated that greater image contrast was observed with Bi2S3 NPs compared to the iodinated CM at all concentrations and energies (80-140 kVp) tested. For example, at a concentration of 65 mM and tube potential of 140 kVp, a CNR enhancement of three to four times was observed for Bi2S3 NPs compared to iodinated CM. Even at a conventional tube potential of 80 KVp, one to two-fold increase in CNR was noted for Bi2S3 NPs. Results are also demonstrated that CNR increased with increasing concentration of Bi2S3 NPs at a fixed tube potential. \u0000Conclusion: These results highlight the effects of the different physical densities and atomic numbers of the two elements (I versus Bi), and their role in enhancing the probability of Compton scattering (CS) and photoelectric effects (PEs). As tube potential was increased, the CT numbers for both Bi2S3 NPs and iodinated CM decreased, consistent with a decrease in the probability of CS and PEs with increasing beam energy. However, the rate of decrease for iodinated CM was larger than Bi2S3 NPs. A good correlation was observed between the experimental results and the theoretical spectra based on linear attenuation coefficients .","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86017388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Cerium Oxide Nanoparticles: Synthesis, Characterization and Study of Antimicrobial Activity 氧化铈纳米颗粒:合成、表征及抗菌活性研究

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000219

P. Reshma, Kh., A. Ashwini

引用次数: 25

Green synthesis of silver nanoparticles using euphorbia confinalis stem extract, characterization and evaluation of antimicrobial activity 大麻黄茎提取物绿色合成纳米银、抗菌活性表征及评价

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000220

N. Mukaratirwa-Muchanyereyi, Tinotenda Muchenje, Stephen Nyoni, Munyaradzi Shumba, M. Mupa, L. Gwatidzo, A. Rahman

{"title":"Green synthesis of silver nanoparticles using euphorbia confinalis stem extract, characterization and evaluation of antimicrobial activity","authors":"N. Mukaratirwa-Muchanyereyi, Tinotenda Muchenje, Stephen Nyoni, Munyaradzi Shumba, M. Mupa, L. Gwatidzo, A. Rahman","doi":"10.4172/2324-8777.1000220","DOIUrl":"https://doi.org/10.4172/2324-8777.1000220","url":null,"abstract":"Green Synthesis of Silver Nanoparticles Using Euphorbia Confinalis Stem Extract, Characterization and Evaluation of Antimicrobial Activity \u0000Silver nanoparticles were synthesized using Euphorbia Confinalis stem extract which is an eco-friendly and cost effective method compared to other synthesis protocols like chemical and physical methods. Euphorbia Confinalis which is used traditionally for therapeutic uses was responsible for capping and reducing silver ions to silver nanoparticles. Silver was of a particular interest for this process due to its evocative physical and chemical properties. The silver nanoparticles synthesized were quantified and characterized using visual examination of the color changes, UV-Visible spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy, Dynamic Light Scattering and Fourier Transform Infrared spectroscopy. The antimicrobial activity of the synthesized nanoparticles was done by agar disc diffusion method tested against Escherichia coli (Gram-Negative) and Staphylococcus aureus (Gram-Positive). The synthesis of silver nanoparticles was confirmed by color change of AgNO3 to reddish brown upon addition of the Euphorbia Confinalis stem extract. The UV-Vis spectrum showed broad absorption band at 433nm corresponding to that of Surface Plasmon Resonance of silver nanoparticles. The FTIR analysis showed the presence of aromatic, aliphatic and amines and these observations suggested the presence and binding of organic compounds with silver nanoparticles.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75523069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Polymorphism in Nano-Sized Graphene Ligand-Induced Transformation of Au38-xAgx/xCux(SPh-tBu)24 to Au36-xAgx/xCux(SPh-tBu)24 (x=1-12) Nanomolecules for Synthesis of Au144-xAgx/xCux[(SR)60,(SC4)60, (SC6)60, (SC12)60,(PET)60, (p-MBA)60, (F)60, (Cl)60,(Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano 纳米尺度石墨烯配体诱导Au38-xAgx/xCux(SPh-tBu)24向Au36-xAgx/xCux(SPh-tBu)24 (x=1-12)纳米分子转化，合成Au144-xAgx/xCux[(SR)60，(SC4)60， (SC6)60， (SC12)60，(PET)60， (p-MBA)60， (F)60， (Cl)60，(Br)60， (I)60， (At)60， (Uus)60和(SC6H13)60]纳米

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000109e

A. Heidari

{"title":"Polymorphism in Nano-Sized Graphene Ligand-Induced Transformation of Au38-xAgx/xCux(SPh-tBu)24 to Au36-xAgx/xCux(SPh-tBu)24 (x=1-12) Nanomolecules for Synthesis of Au144-xAgx/xCux[(SR)60,(SC4)60, (SC6)60, (SC12)60,(PET)60, (p-MBA)60, (F)60, (Cl)60,(Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano","authors":"A. Heidari","doi":"10.4172/2324-8777.1000109e","DOIUrl":"https://doi.org/10.4172/2324-8777.1000109e","url":null,"abstract":"Received: May 24, 2017 Accepted: May 25, 2017 Published: May 30, 2017 Our main objective is to develop strategies to exploit the photo-, electro-, and thermal-chemical reactions of these systems to severe as probes to aid in our basic understanding of the mechanistic factors that control molecular interactions and organic reactions at organized monolayer interfaces. Also, the development of new and selective ways of adding or removing functionality to these monolayers is another part of our ongoing efforts. In the present editorial, we have synthesized Au144-xAgx/xCux[(SR)60, (SC4)60, (SC6)60, (SC12)60, (PET)60, (p-MBA)60, (F)60, (Cl)60, (Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano clusters as anti-cancer Nano drugs and incorporated them onto the surface of gold nanoparticles through the place-exchange reaction. Then, the interfacial reactions of the anchored aldehyde terminus with various nucleophiles have been investigated in some details. Our preliminary results reveal an easy reaction of aldehyde terminus of the organic modified gold nanoparticle with the nucleophiles like aniline, leading to a covalent attachment of the nucleophilic species to the nanoparticle surface.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78077424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 59

Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells 710 Nm量子点与异硫氰酸荧光素偶联抗弹性酶抗体的制备及其在乳体细胞免疫分析中的应用

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000217

Z. Becheva, T. Godjevargova

{"title":"Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells","authors":"Z. Becheva, T. Godjevargova","doi":"10.4172/2324-8777.1000217","DOIUrl":"https://doi.org/10.4172/2324-8777.1000217","url":null,"abstract":"Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells \u0000A novel immunofluorescence microscopic method for a neutrophil and somatic cell count was developed by using anti-elastase antibody. Two different conjugates - anti-bovine neutrophil elastase antibody-fluorescein isothiocyanate conjugate and anti-bovine neutrophil elastase antibody-Quantum Dots 710nm conjugate were prepared. The coupling of Quantum Dots (QDs) and fluorescein isothiocyanate (FITC) to antibody has been demonstrated by comparison of ultraviolet absorption spectra and fluorescence spectra of conjugate and initial components. The activities of conjugates were measured by indirect ELISA at the same conditions. It was found that the sensitivity of the immunoassay with QDs-conjugate was higher than the sensitivity of the immunoassay with FITC-conjugate. The storage stability of antibovine neutrophil elastase antibody-QDs710nm conjugate and anti-bovine neutrophil elastase antibody-FITC conjugate was studied. The residual fluorescence intensity of anti-elastase antibody-QDs was 95% at 30th day, while the intensity of antielastase antibody-FITC conjugate was reduced to 60% at same day. The obtained conjugates were applied in real test with bovine milk somatic cells. The fluorescence imaging proved that QDs-conjugate has better fluorescence intensity than the FITCconjugate, and is more appropriate for determination of somatic cells in milk.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75113481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A New Expander Mechanism of an Infrared Laser Based on Different Nanometre Quantum Dot Particles 基于不同纳米量子点粒子的红外激光器扩展机理研究

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000221

Lihong Su, H. Gao, Ziao Zou, Yong Yang, Junjie Wu

引用次数: 0

Robust, Carbon Nanotube/Polymer Nanolayered Composites with Enhanced Ductility and Strength 具有增强延展性和强度的碳纳米管/聚合物纳米层复合材料

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-06-09 DOI: 10.4172/2324-8777.1000218

I. Harsini, Faris Matalkah, P. Soroushian, Anagi M Balach, Ra

引用次数: 6

Synthesis and Characterization Studies of Pb:Zr:/O2 Nanorods for Optoelectronic Applications 光电用Pb:Zr:/O2纳米棒的合成与表征研究

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-05-23 DOI: 10.4172/2324-8777.1000211

K. Kaviyarasu, X. Fuku, L. Kotsedi, Manik, E. an, J. Kennedy, M. Maaza

引用次数: 8

Green Biosynthesis of Rhodium Nanoparticles Via Aspalathus Linearis Natural Extract 利用芦笋天然提取物绿色生物合成纳米铑

Journal of Nanomaterials & Molecular Nanotechnology Pub Date : 2017-05-23 DOI: 10.4172/2324-8777.1000212

E. Ismail, M. Kenfouch, M. Dhlamini, S. Dube, M. Maaza

引用次数: 9