A complete and permanent hydrophilic modification of poly (ethyleneterephthalate) (PET) films is achieved by argon-plasma irradiation, subsequently grafting acrylic acid (AA) in vapor phase onto their surface. Both Ar plasma irradiation alone and post grafting AA rendered a complete hydrophilicity to PET surfaces. However, the hydrophilicity of the PET surface, only treated with the Ar plasma, is not permanent. In contrast, PET films, irradiated by the Ar plasma, exposed to air, and subsequently grafted with AA monomer, are permanently hydrophilic.
A complete and permanent hydrophilic modification of poly
(ethyleneterephthalate) (PET) films is achieved by argon-plasma irradiation,
subsequently grafting acrylic acid (AA) in vapor phase onto their surface. Both Ar
plasma irradiation alone and post grafting AA rendered a complete hydrophilicity to
PET surfaces. However, the hydrophilicity of the PET surface, only treated with the
Ar plasma, is not permanent. In contrast, PET films, irradiated by the Ar plasma,
exposed to air, and subsequently grafted with AA monomer, are permanently
Carbon-based nanoparticles and nanostructures, such as carbon nanotubes (CNTs), have
drawn great attention in both academia and industry due to their wide potential applica‐
tions. Owing to their well-defined one-dimensional (1D) interior, CNTs serve as desirable
materials for encapsulating molecules, such as water [1-4], ionic liquid , drug molecules
, and biomolecules .
Shiga toxin can be internalized by clathrin-dependent endocytosis in differ-ent cell lines, although it binds specifically to the glycosphingolipid Gb3. It
has been demonstrated previously that the toxin can induce recruitment of
the toxin–receptor complex to clathrin-coated pits, but whether this process
is concentration-dependent or which part of the toxin molecule is involved
in this process, have so far been unresolved issues.
The present science book "Application of Solar Energy" is edited by Professor R. D. Rugescu in the series on Solar Power and consists of 7 chapters that begin with the proof of the high thermal efficiency of the gravitational draught through concentrated solar heating. It continues with novel technologies of producing organic fuels through solar heating, new types of photovoltaic cells, long term use of thermal solar power plants, the efficiency of thermal storage and applications in Niger of the Solar power.
Ion implantation represents a particularly useful means by which to modify the
surface properties of a variety of materials. This prosaic statement, however, does not
convey the depth of basic understanding which has been developed to fully utilize the
advantages of ion implantation. The interaction of a host lattice with the energetic
beams produces metastable states and structures which cannot be achieved by other
means. However, ion implantation also requires an understanding of the fundamental
physics and chemistry that dictate the interaction of the ion beam and the target.
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Unusual magneto-optical behavior induced by local dielectric variations under localized surface plasmon excitations
During dry seasons when the surface water disappears and the vegetation dries up, camels
have to be watered from subterranean sources such as man made water holes, old wells
etc. In highly arid areas as in Eastern Africa, watering camels in dry season is a very time
consuming and arduous job since water has to be lifted bucket by bucket from several
metres deep wells.
Leading mining companies have taken up the chal-
lenge and are pushing beyond minimum legal
requirements through voluntary initiatives, to ensure
their continued “license-to-operate” from the com-
munity as well as increasing their competitive
advantage through continuous, voluntary improve-
ments in environmental performance.
As with all mining activities, the extraction and bene-
ficiation of phosphate rock and potash to produce
mineral fertilizer raw material has the potential to
cause environmental impacts.
In the last two decades, many books have been published on
ion implantation and ion-beam processing. Why this one now?
After all, the advantages of using an energetic ion beam to
modify surfaces with a view to enhancing their tribological,
electrochemical, optical and magnetic properties have been
known for some time.
The aim of this volume is to review the basics of previous
work on ion-beam modification of materials and to include
enough new material on novel applications to bring newcomers
“up to speed” in this exciting area....
The West Pearl Queen reservoir project also used
soil gas surveys to detect PFC tracers that were
injected into the reservoir with the CO2. Soil gas
sampling was conducted before and after the CO2
injection by using capillary tubes and adsorbent
packets for the tracers. Brookhaven National
Laboratory (BNL) supplied the tracers and
performed the tracer concentration analysis (Wells
et al., 2007).
Near-Surface Geophysics – The use of
magnetometers is another possible near-surface
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài:"" Particles induce apical plasma membrane enlargement in epithelial lung cell line depending on particle surface area dose...
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: The crucial role of particle surface reactivity in respirable quartz-induced reactive oxygen/nitrogen species ...
It is essential to subculture the cells once cultured cells reach confluence. For this, trypsin is frequently applied to dissociate adhesive cells from the substratum. However, due to the proteolytic activity of trypsin, cell surface proteins are often cleaved, which leads to dysregulation of the cell functions. Methods: In this study, a triplicate 2D-DIGE strategy has been performed to monitor trypsin-induced proteome alterations. The differentially expressed spots were identified by MALDI-TOF MS and validated by...
The transcription factor p63 plays a pivotal role in the development and maintenance of epithelial tissues, including the ocular surface. In an effort to gain insight into the pathogenesis of keratitis caused by HSV-1, we determined the expression patterns of the p63 and Bax proteins in the Staatens Seruminstitute Rabbit Cornea cell line (SIRC). Methods: SIRC cells were infected with HSV-1 at various multiplicities and maintained for different periods of time. Virus replication was measured by indirect immunofluorescence assay and Western blot analysis.
Bacterial infections at epithelial surfaces, such as those that line the gut
and the lung, stimulate the migration of neutrophils through the co-ordi-nated actions of chemoattractants secreted from pathogen-stimulated epi-thelial cells. One such factor involved in attracting polymorphonuclear
leukocytes across the epithelium and into the lumen has until recently
Protein oligomeric complexes have emerged as a major target of current
research because of their key role in aggregation processes in living systems
andin vitro. Hydrophobic and charged surfaces may favour the self-assembly
process by recruiting proteins and modifying their interactions. We found
that equine lysozyme assembles into multimeric complexes with oleic acid
(ELOA) at the solid–liquid interface within an ion-exchange chromatography
column preconditioned with oleic acid.
The merozoite surface protein-1 represents a prime candi-date for development of a malaria vaccine. Merozoite sur-face protein-1 has been shown to demonstrate high-activity
peptide binding to human red blood cells. One of the
high-activity binding peptides, named 5501, located in the
N-terminus (amino acid sequence MLNISQHQCVKKQ
CPQNS) of the 19-kDa molecular mass fragment of mero-zoite surface protein-1, is conserved, nonimmunogenic and
We previously purified and characterized a peptide toxin,
birtoxin, from the South African scorpion Parabuthus
transvaalicus. Birtoxin is a 58-residue, long chain neurotoxin
that has a unique three disulfide-bridged structure. Here we
report the isolation and characterization of ikitoxin, a pep-tide toxin with a single residue difference, and a markedly
reducedbiological activity, frombirtoxin. Bioassays onmice
showed that high doses of ikitoxin induce unprovoked
jumps, whereas birtoxin induces jumps at a 1000-fold lower
Vibrio choleraehemolysin (HlyA), a water-soluble protein
with a native monomeric relative molecular mass of 65 000,
forms transmembrane pentameric channels in target bio-membranes.TheHlyAbinds to lipid vesicles nonspecifically
and without saturation; however, self-assembly is triggered
specifically by cholesterol.Here we show that the HlyA
partitioned quantitatively to amphiphilic media irrespective
of their compositions, indicating that the toxin had an