Selective sorption of U(VI) from aqueous solutions using a novel aminated Fe3O4@SiO2/PVA nanofiber adsorbent prepared by electrospinning method

2014 ◽  
Vol 303 (1) ◽  
pp. 561-576 ◽  
Author(s):  
Gholam Hossein Mirzabe ◽  
Ali Reza Keshtkar
Keyword(s):  
Aqueous Solutions ◽  
Selective Sorption ◽  
Electrospinning Method

Selective Sorption of Phenol and Related Compounds from Aqueous Solutions onto Graphitized Carbon Black. Adsorption and Flow Microcalorimetric Studies

Langmuir ◽  
1996 ◽  
Vol 12 (2) ◽  
pp. 423-430 ◽  
Author(s):  
Zoltán Király ◽  
Imre Dékány ◽  
Erwin Klumpp ◽  
Hans Lewandowski ◽  
Hans D. Narres ◽  
...  
Keyword(s):  
Carbon Black ◽  
Aqueous Solutions ◽  
Graphitized Carbon Black ◽  
Selective Sorption ◽  
Graphitized Carbon ◽  
Related Compounds

scholarly journals Synthesis of Nanofiber from Polyvinyl Alcohol (PVA)-Collagen Using Electrospinning Methods

2020 ◽  
Vol 21 (2) ◽  
pp. 55-65
Author(s):  
Sudirman Sudirman ◽  
Aloma Karo Karo ◽  
Sulistiyoso Giat Sukaryo ◽  
Karina Dwi Adistiana ◽  
Kiagus Dahlan
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Functional Groups ◽  
Wound Dressing ◽  
Collagen Fiber ◽  
Tissue Formation ◽  
Collagen Concentration ◽  
Electrospinning Method ◽  
Growth Of Bacteria

Polyvinil alcohol (PVA) polymer can be used as matrix to be mixed with collagen in the subtance of primary wound dressing material to cover wound that prevents growth of bacteria and enhanced tissue formation. Collagen fiber is fragile, so important to combined with PVA to obtain better mechanical properties. The PVA-collagen fibers are prepared in aqueous solutions with PVA (10%) and collagen concentration (1% and 2%) using electrospinning method and the effect of voltage 15 kV, 19 kV, and 23 kV. Analysis of functional groups show that the presence of identical compounds produced and new functional groups are not formed. SEM data show that the effect of variation of voltage and collagen concentration on the resulting morphology of fiber. PVA-collagen 2% fibers produce continuous fibers, has a diameter 284-426 nm, thickness 0.0324-0.0483 mm and has a high percent of elongation so it can be used as a wound dressing material.

Selective sorption of thorium (IV) from highly acidic aqueous solutions by rice and wheat bran

2014 ◽  
Vol 303 (1) ◽  
pp. 949-958 ◽  
Author(s):  
A. Boveiri Monji ◽  
V. Ghoulipour ◽  
M. H. Mallah ◽  
B. Maraghe-Mianji
Keyword(s):  
Aqueous Solutions ◽  
Wheat Bran ◽  
Selective Sorption

Poly(Vinyl Alcohol)/Pullulan Blend Nanofibres Prepared from Aqueous Solutions Using Electrospinning Method

2014 ◽  
Vol 22 (9) ◽  
pp. 779-786 ◽  
Author(s):  
Md. Shahidul Islam ◽  
Mohammad Mahbub Rabbani ◽  
Seong Baek Yang ◽  
Woo Seok Choi ◽  
Jin Hyun Choi ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Electrospinning Method

Poly(vinyl alcohol)/chitosan oligosaccharide blend submicrometer fibers prepared from aqueous solutions by the electrospinning method

2009 ◽  
Vol 111 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Hyun Woo Lee ◽  
Mohammad Rezaul Karim ◽  
Jae Hyeung Park ◽  
Han Do Ghim ◽  
Jin Hyun Choi ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Chitosan Oligosaccharide ◽  
Electrospinning Method

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

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