Search

Semi-embedded periodic Ag grids were combined with FTO/glass substrates based on laser direct writing to prepare transparent electrodes (TEs). The laser etching parameters (scanning velocity and energy density), grid shape, and unit-grid circumcircle radius were systematically optimized. The optimal scanning velocity and energy density for obtaining ideal laser-etched grooves were determined to be 10 mm/s and 1.6 J/cm2, respectively. The hexagonal Ag grid/FTO TE using the 1.00-mm unit-grid circumcircle radius prepared from the optimal laser etching parameters showed significantly decreased sheet resistance and slightly lowered light transmittance as compared to the FTO/glass substrate. This TE was employed for fabricating a transparent heater (TH), which could reach a steady-state temperature of 137.7 °C within 60 s at a voltage of 4.0 V and maintain good heating and cycling stability in 10 continuous switch heating/cooling cycles under different voltages (0.8–4.0 V). The application prospect of the TH was demonstrated by a de-icing experiment. Introducing semi-embedded periodic Ag grids with a suitable grid shape and unit-grid circumcircle radius can contribute to a great improvement in electrical conductivity of the substrate and, thus, its comprehensive performance, providing a great inspiration for optimized preparation of high-performance TEs. [ABSTRACT FROM AUTHOR]

Persistent inflammation contributes to the exhaustion of immune system and non-AIDS-defining events in HIV-infected patients. Transforming growth factor β (TGF-β) is generally considered an anti-inflammatory cytokine. It is unclear that why high-level TGF-β coexists with chronic inflammation during HIV infection. In this study, it was found that HIV-infected patients had lower proportion of phosphorylated SMAD2/3-positive cells among total CD3+ T cells and subsets of CD3+CD8+ and CD3+CD8− T cells when compared with health subjects. The findings implied that phosphorylation of SMAD2/3 is inhibited in HIV-infected patients, and that disturbance of TGF-β/SMAD2/3 signaling pathway may be involved in HIV-related chronic inflammation. [ABSTRACT FROM AUTHOR]

Objective. To analyze the application of standardized nursing procedures in critically ill patients' nursing evaluation. Methods. 90 cases of critically ill patients aged from 18 to 65 who were treated in our hospital from April 2020 to April 2021 were selected and divided into the control group and observation group, respectively, with 45 cases according to the drawing method. The rescue time, blood pressure, heart rate before and after nursing, adverse mood, length of stay, incidence of adverse events, ICU transfer and death, and satisfaction of 2 groups were statistically analyzed and compared. Results. The rescue time of cardiopulmonary resuscitation, oxygen inhalation, venous opening, and endotracheal resuscitation in the observation group was 3.24 ± 1.01 , which is lower than that in the control group, 6.65 ± 2.11 , with statistical significance (P < 0.05). Similarly, the vital signs in the observation group were 2.45 ± 0.44 , which is also significantly lower than that in the control group, 5.67 ± 1.56. After nursing, the blood pressure and heart rate in the observation group were lower than those in control group, with statistical significance (P < 0.05). The adverse mood of the observation group after nursing was lower than that of the control group, with statistical significance (P < 0.05). The length of stay, incidence of adverse events, intensive care unit (ICU) transfer, and death in the observation group were lower than those in the control group, with statistical significance (P < 0.05). The length of stay in the observation group was 8.87 ± 2.11 , while 11.34 ± 2.45 in the observation group. The incidence of adverse events in the observation group was 1, while 8 in the observation group. The length of stay in the observation group was 8.87 ± 2.11 , while 11.34 ± 2.45 in the observation group. The ICU transfer in the observation group were 2, while 9 in the observation group. There was no death in the observation group, however, 4 in the observation group. Nursing satisfaction in the observation group was higher than that in the control group, with statistical significance (P < 0.05). The number of patients that are very satisfied in the observation group was 28, while 20 in the control group. The number of patients that are satisfied in the observation group was the same as in the control group, both 15. However, the number of patients that are dissatisfied in the observation group was 2, while 10 in the control group. Conclusion. The application of the standardized nursing process in the nursing of critically ill patients can not only effectively reduce the self-rating anxiety scale (SAS) and sarcoidosis diagnostic score (SDS) of patients but also reduce the incidence of complications and improve the nursing satisfaction of patients. [ABSTRACT FROM AUTHOR]

Electrocatalytic oxygen evolution reaction (OER) plays an important role in various renewable energy conversion and storage technologies. Ruthenium complexes with terpyridine (tpy) and bipyridine (bpy) as ligands are considered to be an important catalyst for OER electrocatalysis. Their catalytic performance is affected by substituent groups of the tpy (and bpy) ligands, and is often limited by low current density. Here, we report a Ru‐polypyridine complex covalently anchored to single‐walled carbon nanotubes (SWCNTs) via a tpy ligand to form a hybrid material of SWCNT‐tpyRubpy. Electrocatalytic OER studies have shown that the covalent attachment of the Ru‐polypyridine complexes to SWCNTs avoids noticeable molecular aggregations and increases the conductivity. Compared with that of the SWCNT‐unattached complex, SWCNT‐tpyRubpy exhibits a higher electrocatalytic OER activity with a low onset potential of 1.48 V (vs reversible hydrogen electrode) and a smaller Tafel slope of 109 mV dec−1 in alkaline solution. Therefore, the CNT‐hybridization is an effective method for the construction of advanced SWCNT‐based Ru complex electrocatalysts and to understand their catalytic performance. [ABSTRACT FROM AUTHOR]

Three free base porphyrin-fullerene dyads of C60-PH2R and their zinc complexes C60-PZnR were synthesized. They were fully characterized by mass spectrometry, nuclear magnetic resonance, infrared spectroscopy, and ultraviolet-visible spectroscopy. Studies on steady-state fluorescence spectroscopy and cyclic voltammetry show that the coordination of the porphyrin moiety with zinc ions leads to an increases in the singlet excited state energies, and decreases in both the HOMO level and the HOMO-LUMO gap. The introduction of the electron-donating groups of -Me or -OMe to the porphyrin core leads to a negative shift in the first oxidation potential, and a further decrease in the HOMO level. Calculation Results show that the coordination of zinc ions lead to a greatly increase in the photoinduced electron transfer constants ket and substituents of the porphyrin core also effect on ket value. [ABSTRACT FROM AUTHOR]