Design and Synthesis of Luminescent Lanthanide Complexes as Hydrogen Sulfide Probes

Hydrogen sulfide (H 2 S) is one of the endogenous gasotransmitters that has been recently reported to play a variety of pathological and physiological roles in different tissues. Therefore, probes that can sense H 2 S generated by enzymes with good selectivity and sensitivity would be very useful for drug discovery efforts, as well as for fundamental biological studies. My work focuses on the design, synthesis and characterization of luminescent lanthanide complexes as probes for time-gated luminescence detection of H 2 S

An analysis of the contradictoriness, complexity and future prospect of Sino-Vietnamese relations

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Design and Synthesis of Luminescent Lanthanide Complexes as Hydrogen Sulfide Probes

Hydrogen sulfide (H 2 S) is one of the endogenous gasotransmitters that has been recently reported to play a variety of pathological and physiological roles in different tissues. Therefore, probes that can sense H 2 S generated by enzymes with good selectivity and sensitivity would be very useful for drug discovery efforts, as well as for fundamental biological studies. My work focuses on the design, synthesis and characterization of luminescent lanthanide complexes as probes for time-gated luminescence detection of H 2 S

Variational Squeezed Davydov Ansatz for Realistic Chemical Systems with Nonlinear Vibronic Coupling

Chemical systems normally possess strong nonlinear vibronic couplings at both zero and finite temperature. For the lowest-order quadratic couplings, here, we introduce a squeezing operator into a variational coherent-state-based method, Davydov ansatz, to simulate the quantum dynamics and the respective spectroscopy. Two molecular systems, pyrazine and the 2-pyridone dimer, are taken as calculated model systems, both of which involve nontrivial quadratic vibronic couplings in high- and low-frequency regions, respectively. Upon a comparison with the benchmarks, the method manifests its advantage for nonlinear couplings. The squeezed bases are also proven to be applicable for the finite temperature by adapting with the thermofield dynamics

Cooperative Binding of Bifunctionalized and Click-Synthesized Silver Nanoparticles for Colorimetric Co²⁺ Sensing

Bifunctionalized silver nanoparticles (triazole-carboxyl Ag NPs) were synthesized through a click reaction and have a cooperative effect on recognition of Co2+, resulting in appreciable changes in color and absorption properties over other metal ions tested, including Fe2+, Mn2+, Hg2+, Ni2+, Cd2+, Cu2+, Zn2+, Pb2+, Li+, Na+, K+, Cs+. The functionalized silver nanoparticles became aggregated in solution in the present of Co2+ through cooperative metal−ligand interaction. The colorimetric sensor allows a rapidly quantitive assay of Co2+ down to the concentration of 7.0 × 10−6 M. Moreover, the triazole-carboxyl AgNPs can be capable of evaluating the exceeding standard of Co2+ in drinking water

Additional file 1: of Laminin differentially regulates the stemness of type I and type II pericytes

Figure S1. Representative dot plots for PDGFRβ-PE and Nestin-GFP in FACS analysis. (a) Representative dot plot for PDGFRβ-FMO control. (b) Representative dot plot showing sorting gates. Figure S2. Laminin inhibits the proliferation of type I and type II pericytes in vitro. (a) Quantification of pH3+ cell percentage in type I pericytes in the presence of sal or ln. n = 4. (b) Quantification of pH3+ cell percentage in type II pericytes in the presence of Sal or Ln. n = 4. Ln laminin-111, Sal saline, WT wildtype. Data are shown as mean ± SD. **p < 0.01 versus WT + Sal; ## p < 0.01 versus PKO + Sal. Figure S3. Laminin induces Myogenin expression in type II pericytes after myogenic differentiation. Western blots and quantification of Myog expression in WT and PKO type II pericytes after myogenic differentiation. Actin was used as a loading control. n = 4. Ln laminin-111, Sal saline, WT wildtype. Data are shown as mean ± SD. **p < 0.01 versus WT + Sal; # p < 0.05 versus PKO + Sal. (DOCX 17413 kb

Ultrafast Long-Range Charge Separation in Organic Photovoltaics: Promotion by Off-Diagonal Vibronic Couplings and Entropy Increase

The exciton dissociation in a model donor/acceptor heterojunction with electron–phonon couplings is simulated by a full quantum dynamical method, in which ultrafast long-range charge separation is observed. Such a novel scenario does not undergo short-range interfacial (pinned) charge transfer states, but can be mainly ascribed to the quantum resonance between local Frenkel excited states and a broad array of long-range charge transfer (LRCT) states assisted by the moderate off-diagonal vibronic couplings. The entropy-increasing effect associated with the very dense density of states for LRCT states is also found to be beneficial for lowering the free energy barrier for charge generation in organic solar cells

Plantlet regeneration from stem segment with nodule of embryo-cultured seedlings of <i>C</i>. <i>camphora</i>.

<p>a) a stem segment with one node (SN explant) for adventitious buds induction (arrow indicates the nodal region without axillary bud) bar: 0.1 cm; b) adventitious buds induced from SN explants, bar: 1.5 cm; c) direct organogenesis in SN explant, bar: 0.3 cm; d) a regenerated shoot with terminal bud from SN explants for elongation and root induction (arrow indicates excision points of lateral buds), bar: 0.3 cm; e) regenerated plantlet <i>in vitro</i>, bar: 1.0 cm; f) hardened plants, bar: 1.5 cm.</p

Modeling the Solubility of SO₂ + CO₂ Mixtures in Brine at Elevated Pressures and Temperatures

The knowledge of solubility behavior of SO₂ + CO₂ mixtures in brines at elevated pressures and temperatures is important both in the viability investigations of geologic cosequestrations into deep saline aquifers and in the simulations for flue gas sequestration. We present a model describing SO₂ and CO₂ as species that do not self-associate but cross associate with water. Two equations of state, PCSAFT/PMSA and eCPA, are applied to work with the model at conditions relevant to geologic sequestration of flue gases: up to 393 K and 450 bar (equivalent to a depth of 4 km) and high salt molality of 6. PC-SAFT/PMSA, which performs better in the whole range of interest, shows that the presence of SO₂ makes CO₂ less soluble in low-salinity brines (molality <1) but more soluble in high-salinity brines in a temperature range between the critical temperatures of the gases (31.1–157.5 °C)

Evolution in population size of ANN and GRN-based robots in a (representative) competition experiment.

<p>The X-axis represents the different time steps during the simulation. The red curve shows the population size (Y-axis) of GRN-based robots while the blue curve shows the population size (Y-axis) of the ANN-based robots. The green curve shows the number of available food sources. Increases in the number of food sources are due to the fact that the system will add new food sources with a certain rate after a pre-set number of time steps. See text for details.</p