25 research outputs found
Solution−Chemical Synthesis of Carbon Nanotube/ZnS Nanoparticle Core/Shell Heterostructures
A facile solution−chemical method has been developed to be capable of encapsulating a multiwalled carbon nanotube
(MWCNT) with ZnS nanocrystals without using any bridging species. The thickness of the ZnS shell can be tuned
easily by controlling the experimental conditions. The optical properties of the MWCNT/ZnS heterostructures were
investigated using UV−vis absorption and photoluminescence spectroscopy. The optical absorption spectrum indicates
that the band gap of ZnS nanocrystallites is 4.2 eV. On the basis of the photoluminescence spectrum, charge
transfer is thought to proceed from ZnS nanocrystals to the nanotube in the ZnS−carbon nanotube system. These
special heterostructures are very easily encapsulated within a uniform silica layer by a modified-Stöber process
and still show better stability even after heat treatment at 400 °C, which makes them appealing for practical
applications in biochemistry and biodiagnostics
Synthesis of Mesoporous Eu<sub>2</sub>O<sub>3</sub> Microspindles
Mesoporous Eu2O3 microspindles have been prepared by a facile solution process followed by subsequent heat treatment. By adding urea stepwise and varying the reaction time, the dimension of the Eu2O3 microspindles can be easily tuned from 250 × 100 nm to 900 × 400 nm. The products were characterized by X-ray diffraction, small-angle X-ray scattering, (high-resolution) transmission electron microscopy, scanning electron microscopy, N2 adsorption, and photoluminescence spectroscopy. The Eu2O3 samples exhibit a relatively broad pore-size distribution, and the wall of the pore is constructed by well-crystalline Eu2O3 nanocrystals with diameters of about 15 nm. A possible formation mechanism of the mesoporous microspindles was also discussed
Controlled Synthesis of High-Quality PbS Star-Shaped Dendrites, Multipods, Truncated Nanocubes, and Nanocubes and Their Shape Evolution Process
Well-defined single-crystalline PbS nano- and microstructures including dendrites, multipods, truncated
nanocubes, and nanocubes were synthesized in high yield by a simple solution route. Novel star-shaped PbS
dendrites with six symmetric arms along the 〈100〉 direction, each of which shows one trunk (long axis) and
four branches (short axes), have been achieved using Pb(AC)2 and thioacetamide (TAA) as precursors, under
the molar ratio Pb(AC)2/TAA = 2/1, at initial reaction temperature 80 °C, refluxing for 30 min at 100 °C, in
the presence of cetyltrimethylammonium bromine (CTAB). The “nanorods” in each branch are parallel to
each other in the same plane and are perpendicular to the trunk. The truncated nanocubes mainly bounded by
the {100} plane were prepared under a different Pb(AC)2/TAA molar ratio, at initial reaction temperature 40
°C, refluxing for 12 h at 100 °C. Based on the systematic studies on their shape evolution, a possible growth
mechanism of these PbS nano- and microstructures was proposed. The shapes of PbS nanocrystals with face-centered cubic (fcc) structure are mainly determined by the ratio (R) between the growth rates along the
〈100〉 and 〈111〉 directions. The Pb(AC)2/TAA molar ratio and the initial reaction temperature influence the
growth ratio R in the formation of PbS nuclei at an early stage, which results in the final morphology of PbS
nanocrystals. Under the current experimental conditions, we can control the PbS shape evolution by simply
tuning the molar ratio, the initial reaction temperature, and the period of reaction. Based on the systematic
studies on the shape evolution, this approach is expected to be employed for the control-shaped synthesis of
other fcc structural semiconductor nanomaterials. The photoluminescence properties were investigated and
the prepared nano- and microstructures displayed a very strong luminescence around 600−650 nm at room
temperature
Additional file 1 of FOXD3 confers chemo-sensitivity in ovarian cancer through a miR-335/DAAM1/myosin II axis-dependent mechanism
Additional file 1: Supplementary Fig. 1. KM survival curves based on 19 candidate genes in OC. Red indicates patients with high gene expression and blue indicates those with low gene expression
Additional file 2 of FOXD3 confers chemo-sensitivity in ovarian cancer through a miR-335/DAAM1/myosin II axis-dependent mechanism
Additional file 2: Supplementary Table 1. Primer sequences for RT-qPCR
Vapor–Liquid Equilibrium of α‑Pinene, Longifolene, and Abietic Acid of Pine Oleoresin: HS-GC Measurements and Model Correlation
Investigating phase equilibrium on
the terpenoid of the pine oleoresin
system is of great importance for the usage relevant to the oleoresin.
Herein, the binary and ternary isothermal vapor–liquid equilibrium
(VLE) of α-pinene, longifolene, and abietic acid (three main
components of oleoresin) at 313.15, 323.15, and 333.15 K were measured
by headspace gas chromatography (HS-GC). There was no azeotropic behavior
observed of α-pinene and longifolene. Abietic acid’s
influence on separating α-pinene and longifolene was discussed.
The relative volatilities of α-pinene and longifolene decrease
in the presence of abietic acid, indicating a negative impact of abietic
acid on their separation. The experimental data were correlated well
with the nonrandom two-liquid, universal quasichemical, and Wilson
models. The binary interaction parameters for each equation were also
obtained, and the largest mean relative deviation of vapor-phase mole
fraction and the largest absolute average deviation of pressure are
0.1975% and 0.0856 kPa, respectively
Vapor–Liquid Equilibrium of Monoterpene-Sesquiterpene System Containing Resin Acid
The phase equilibrium relationships
of resin systems
are indispensable
for resin tapping, distillation, and investigating the release of
terpenes in biogenic volatile organic compounds (BVOCs). Herein, we
obtained the vapor–liquid equilibrium (VLE) data of monoterpene-sesquiterpene
systems that contain resin acid by a headspace gas chromatography
(HS-GC). There is no azeotropic behavior between terpenes, and abietic
acid was found to inhibit the volatilization and separation of terpenes.
Furthermore, the saturated vapor pressure of the systems almost triples
when the experimental temperature increases from 313.15 to 333.15
K, which may exacerbate terpene emissions in ecosystems. Additionally,
the thermodynamic consistency of the VLE values was confirmed by van
Ness test, and the experimental data were correlated using NRTL, UNIQUAC,
and Wilson activity coefficient models, while the Conductor-like
Screening Model for Real Solvents (COSMO-RS) model was utilized for
predictions. All of the data satisfy thermodynamic consistency, and
the correlation results and prediction results demonstrate good adherence
of the activity coefficient models to experimental values and the
positive capacity of COSMO-RS in predicting the VLE relationship for
the pine resin systems, respectively
Additional file 3: of Modification of Threonine-1050 of SlBRI1 regulates BR Signalling and increases fruit yield of tomato
Figure S3. Total soluble solids in fruits. (PDF 188 kb
Microscale Curling and Alignment of Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i> MXene by Confining Aerosol Droplets for Planar Micro-Supercapacitors
Additive manufacturing
techniques have revolutionized the field
of fabricating micro-supercapacitors (MSCs) with a high degree of
pattern and geometry flexibility. However, traditional additive manufacturing
processes are based on the functionality of microstructural modulation,
which is essential for device performance. Herein, Ti3C2Tx MXene was chosen to report
a convenient aerosol jet printing (AJP) process for the in situ curling
and alignment of MXene nanosheets. The aerosol droplet provides a
microscale regime for curling MXene monolayers while their alignment
is performed by the as-generated directional stress derived from the
quasi-conical fiber array (CFA)-guided parallel droplet flow. Interdigital
microelectrodes were further developed with the curled MXene and a
satisfying areal capacitance performance has been demonstrated. Importantly,
the AJP technique holds promise for revolutionizing additive manufacturing
techniques for fabricating future smart microelectronics and devices
not only in the microscale but also in the nanoscale
MOESM4 of Comprehensive bioinformatics analysis of acquired progesterone resistance in endometrial cancer cell line
Additional file 4: Table S4. Microarray analysis result of genes related to lipid metabolic and biosynthetic process in IshikawaPR and Ishikawa cell
