نتایج جستجو برای: afm

تعداد نتایج: 11335  

Journal: :FEMS yeast research 2009
Gábor Péter Judit Tornai-Lehoczki Dénes Dlauchy

During a survey of methylotrophic yeasts in natural habitats in Hungary, the yeast community associated with the exudates of white poplar (Populus alba) was found to be unique among the tree exudates hitherto investigated. Nineteen methanol-assimilating yeast strains representing an undescribed ascomycetous species were isolated from tree exudates of P. alba collected at different locations in ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Thi Vo Venkat Venkatasubramanian Sanat Kumar Babji Srinivasan Suchetan Pal Yugang Zhang Oleg Gang

There has been considerable interest in understanding the self-assembly of DNA-grafted nanoparticles into different crystal structures, e.g., CsCl, AlB2, and Cr3Si. Although there are important exceptions, a generally accepted view is that the right stoichiometry of the two building block colloids needs to be mixed to form the desired crystal structure. To incisively probe this issue, we combin...

1985
Toshio Ando Takayuki Uchihashi Takeshi Fukuma

The atomic force microscope (AFM) has a unique capability of allowing the high-resolution imaging of biological samples on substratum surfaces in physiological solutions. Recent technological progress of AFM in biological research has resulted in remarkable improvements in both the imaging rate and the tip force acting on the sample. These improvements have enabled the direct visualization of d...

Journal: :Current protein & peptide science 2012
Rhiannon G Creasey Christopher T Gibson Nicolas H Voelcker

The atomic force microscope (AFM) is widely used in biological sciences due to its ability to perform imaging experiments at high resolution in a physiological environment, without special sample preparation such as fixation or staining. AFM is unique, in that it allows single molecule information of mechanical properties and molecular recognition to be gathered. This review sets out to identif...

Journal: :Cancer research 1987
J M Cullen B H Ruebner L S Hsieh D M Hyde D P Hsieh

Aflatoxin M1 (AFM), an hydroxy metabolite of the potent carcinogenic mycotoxin aflatoxin B1 (AFB) is frequently found in milk and other dairy products. Sufficient amounts of AFM were produced to study the carcinogenicity of this compound. AFM was fed to male Fischer rats starting at 7 weeks up to 21 months of age. Agar-based semisynthetic diets contained 0.0, 0.5, 5.0, and 50.0 micrograms/kg of...

Journal: :Asian journal of control 2004
Q Zou Kk Leang E Sadoun Mj Reed S Devasia

This article considers the precision positioning problem associated with high-speed operation of the Atomic Force Microscope (AFM), and presents an inversion-based control approach to achieve precision positioning. Although AFMs have high (nanoscale) spatial resolution, a problem with current AFM systems is that they have low temporal resolution, i.e., AFM imaging is slow. In particular, curren...

2014
JON WILKENING

We compare the effectiveness of solving Dirichlet–Neumann problems via the Craig–Sulem (CS) expansion, the Ablowitz-Fokas-Musslimani (AFM) implicit formulation, the dual AFM formulation (AFM∗), a boundary integral collocation method (BIM), and the transformed field expansion (TFE) method. The first three methods involve highly ill-conditioned intermediate calculations that we show can be overco...

2015
Yuri D Ivanov Anna L Kaysheva Pavel A Frantsuzov Tatyana O Pleshakova Nikolay V Krohin Alexander A Izotov Ivan D Shumov Vasiliy F Uchaikin Vladimir A Konev Vadim S Ziborov Alexander I Archakov

A method for detection and identification of core antigen of hepatitis C virus (HCVcoreAg)-containing particles in the serum was proposed, with due account taken of the interactions of proteotypic peptides with Na(+), K(+), and Cl(-) ions. The method is based on a combination of reversible biospecific atomic force microscopy (AFM)-fishing and mass spectrometry (MS). AFM-fishing enables concentr...

2000
B. T. G. TAN S. L. GAN

Asymmetrical frequency modulation (AFM) as proposed by Palamin et al. (1988) offers greater flexibility in the shaping of the spectra of synthesized waveforms as compared to normal frequency-modulation (FM) synthesis. The feasibility of using AFM synthesis for the real-time generation of waveforms of musical instruments is demonstrated using a DSP56000 digital signal processor to implement the ...

Journal: :Analytical Chemistry 2007

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