8 research outputs found
Air-Stable, High-Performance, Flexible Microsupercapacitor with Patterned Ionogel Electrolyte
We
describe the fabrication of air-stable, high-performance, planar
microsupercapacitors (MSCs) on a flexible polyÂ(ethylene terephthalate)
substrate with patterned ionogel electrolyte, i.e., polyÂ(ethylene
glycol) diacrylate/1-ethyl-3-methylimidazolium bisÂ(trifluoromethylsulfonyl)Âimide,
and electrodes of spray-coated multiwalled carbon nanotubes. The flexible
MSC showed good cyclability, retaining ∼80% of initial capacitance
after 30 000 cycles, and good mechanical stability down to
a bending diameter of 3 mm under compressive stress; 95% of the initial
capacitance was retained after 1000 bending cycles. The MSC had high
electrochemical stability with retaining 90% of its initial capacitance
for 8 weeks in air. Furthermore, vertical stacking of MSCs with patterned
solid film of ionogel electrolyte could increase the areal capacitance
dramatically. This flexible MSC has potential applications as an energy-storage
device in micro/nanoelectronics, without encapsulation for air stability
Image_1_Extracellular self-RNA: A danger elicitor in pepper induces immunity against bacterial and viral pathogens in the field.TIF
Plants and animals serve as hosts for microbes. To protect themselves from microbe-induced damage, plants and animals need to differentiate self-molecules/signals from non-self, microbe-derived molecules. Damage-associated molecular patterns (DAMPs) are danger signals released from the damaged host tissue or present on the surface of stressed cells. Although a self-extracellular DNA has previously been shown to act as a DAMP in different plant species, the existence of a self-extracellular RNA (eRNA) as a danger signal in plants remains unknown. Here, we firstly evaluated the ability of a pepper self-eRNA to activate immunity against viral and bacterial pathogens under field conditions. Pepper leaves pre-infiltrated with self-eRNA exhibited reduced titer of the naturally occurring Tomato spotted wilt virus and diminished symptoms of Xanthomonas axonopodis pv. vesicatoria infection through eliciting defense priming of abscisic acid signaling. At the end of the growing season at 90 days after transplanting, pepper plants treated with self- and non-self-eRNAs showed no difference in fruit yield. Taken together, our discovery demonstrated that self-eRNA can successfully activate plant systemic immunity without any growth penalty, indicating its potential as a novel disease management agent against a broad range of pathogenic microbes.</p
Additional file 2: of Association between diet and gallstones of cholesterol and pigment among patients with cholecystectomy: a case-control study in Korea
Scree plot. (DOC 69 kb
Selective Suppression of Stimulated Raman Scattering with Another Competing Stimulated Raman Scattering
A three-beam femtosecond
stimulated Raman scattering (SRS) scheme
is formulated and demonstrated to simultaneously induce two different
SRS processes associated with Raman-active modes in the same molecule.
Two SR gains involving a common pump pulse are coupled and compete:
As one of the Stokes beam intensities increases, the other SRS is
selectively suppressed. We provide theoretical description and experimental
evidence that the selective suppression behavior is due to the limited
number of pump photons used for both of the two SRS processes when
an intense depletion beam induces one SRS process. The maximum suppression
efficiency was ∼60% with our experimental setup, where the
SR gain of the ring breathing mode of benzene is the target SRS signal,
which is allowed to compete with another SRS process, induced by an
intense depletion beam, of the CH stretching mode. We anticipate a
potential of this new switching-off concept in super-resolution label-free
microscopy
Additional file 1 of TLR7 activation by miR-21 promotes renal fibrosis by activating the pro-inflammatory signaling pathway in tubule epithelial cells
Additional file 1: Supplementary Table 1. Information of Antibodiesused in Western blotting. SupplementaryTable 2. Primer sequences for qPC
Strain Mapping and Raman Spectroscopy of Bent GaP and GaAs Nanowires
Strain engineering
of nanowires (NWs) has been recognized as a
powerful strategy for tuning the optical and electronic properties
of nanoscale semiconductors. Therefore, the characterization of the
strains with nanometer-scale spatial resolution is of great importance
for various promising applications. In the present work, we synthesized
single-crystalline zinc blende phase GaP and GaAs NWs using the chemical
vapor transport method and visualized their bending strains (up to
3%) with high precision using the nanobeam electron diffraction technique.
The strain mapping at all crystallographic axes revealed that (i)
maximum strain exists along the growth direction ([111]) with the
tensile and compressive strains at the outer and inner parts, respectively;
(ii) the opposite strains appeared along the perpendicular direction
([2Ì…11]); and (iii) the tensile strain was larger than the coexisting
compressive strain at all axes. The Raman spectrum collected for individual
bent NWs showed the peak broadening and red shift of the transverse
optical modes that were well-correlated with the strain maps. These
results are consistent with the larger mechanical modulus of GaP than
that of GaAs. Our work provides new insight into the bending strain
of III–V semiconductors, which is of paramount importance in
the performance of flexible or bendable electronics
Non-Heme Manganese Catalysts for On-Demand Production of Chlorine Dioxide in Water and Under Mild Conditions
Two non-heme manganese complexes
are used in the catalytic formation
of chlorine dioxide from chlorite under ambient temperature at pH
5.00. The catalysts afford up to 1000 turnovers per hour and remain
highly active in subsequent additions of chlorite. Kinetic and spectroscopic
studies revealed a Mn<sup>III</sup>(OH) species as the dominant form
under catalytic conditions. A Mn<sup>III</sup>(μ-O)ÂMn<sup>IV</sup> dinuclear species was observed by EPR spectroscopy, supporting the
involvement of a putative Mn<sup>IV</sup>(O) species. First-order
kinetic dependence on the manganese catalyst precludes the dinuclear
species as the active form of the catalyst. Quantitative kinetic modeling
enabled the deduction of a mechanism that accounts for all experimental
observations. The chlorine dioxide producing cycle involves formation
of a putative Mn<sup>IV</sup>(O), which undergoes PCET (proton coupled
electron-transfer) reaction with chlorite to afford chlorine dioxide.
The ClO<sub>2</sub> product can be efficiently removed from the aqueous
reaction mixture via purging with an inert gas, allowing for the preparation
of pure chlorine dioxide for on-site use and further production of
chlorine dioxide