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For younger subjects (≤ 50 years old), the contribution of age was very small. A simple subtraction of subject-specific calibration factors significantly reduced biometric-related errors, which also improved the linearity of BP estimation. The relative importance analysis of input features suggests that separate models are indeed necessary for different age groups with different signal qualities, especially for DBP estimation in older subjects. SIGNIFICANCE This study shows a reasonable BP estimation accuracy with age-dependent MLR models, which may help to equip current pulse oximeters with additional functionalities.Various nitrogen (N)-doped carbon materials have been designed as efficiency photocatalysts. For the first time, polyimide (PI) aerogels were calcined to be N-doped carbon photocatalysts at different temperature. The structures of carbonized polyimide aerogels (CPIs) vary with the carbonization temperature. The conductivity of CPI increases with the improvement of calcination temperature, whereas the N content of the CPI decreases, as well as the changing of the N state. Thus, the electronic properties of CPI are changed. The photocatalytic experiments certified that the PI aerogel calcined at 800 °C exhibited the high photocatalytic performance. The chlortetracycline (CTC) degradation rate over CPI-800 aerogel is 2.3 times as much as that of PI aerogel due to the changed structure and properties of CPI-800 aerogel. © 2020 IOP Publishing Ltd.TiO2 with exposed (001) facets/Bi4O5Br2 nanosheets heterojunction (TNS/BOB) was fabricated via hydrothermal and electrostatic self-assembly method, their photocatalytic activity for NO removal was evaluated under simulated solar light irradiation. Through optimizing the content of TNS nanosheets, it was observed that the photo-oxidative NO removal rate of 15% TNS/BOB was up to 54.3%, while that of single component TNS and BOB was only 31.1 and 37.7%, respectively. Through the capturing experiments and ESR measurements, the main active species were identified as •O2- and •OH in the photocatalytic process. DFT computation results and ESR tests reveal that a Z-type electron transport is formed between TNS and BOB, wherein the photo-induced electrons in TNS combined with the holes in BOB, leading to effectively promote charge separation and depress recombination of photogenerated charge carriers in TNS/BOB. The design principle could provide a new idea for the construction of Z-scheme heterojunction photocatalytic for environmental applications. © 2020 IOP Publishing Ltd.Electromagnetic wave (EMW) induction of shape memory polymers (SMPs) composites with multifunctional inorganic fillers is a high efficiency, uniform and non-contact method. Herein, shape memory effect of the ternary BCN/Fe3O4/PCL composites induced by EMW are explored. The components of Fe3O4 and BCN nanotubes are served as wave-absorbing materials. Electromagnetic properties and EMW absorption performance of BCN/Fe3O4/PCL are discussed in more detail. The EMW absorbed by BCN/Fe3O4/PCL is dissipated by dielectric loss and magnetic loss. The shape memory mechanism of the BCN/Fe3O4/PCL is based on Fe3O4 and BCN nanotubes dissipating absorbed EMW energy into heat to boost the temperature of the composites, thereby responding to EMW remote controlling. This work paves a new direction for SMPs induced by EMW as potential candidates in the field where shape recovery restricted space. © 2020 IOP Publishing Ltd.The majority of chronic infections are caused by biofilms, which have higher levels of antibiotic resistance than planktonic growth. Violet-blue 405 nm light has recently emerged as a novel bactericide, but limited studies have been conducted on its effectiveness against biofilms. We found that in response to 405 nm light both Pseudomonas aeruginosa and Bacillus subtilis biofilms exhibited cell dispersal and membrane potential hyperpolarisations. The response to 405 nm light depended on the stage of biofilm growth. The use of reactive oxygen species scavengers reduced membrane hyperpolarisation and biofilm dispersal in response to 405 nm light. This is the first time that membrane potential hyperpolarisations have been linked with photooxidative stress in bacteria and with biofilm dispersal. These results provide a new insight into the role of membrane potentials in the bacterial stress response and could be used in the development of 405 nm light based biofilm treatments.Double perovskite halides have drawn great attention due to characteristics of non-toxicity, stability and broad elemental compositions compared to CH3NH3PbI3. Among them, layered double perovskite halides have been proposed as promising photovoltaic materials. selleck Noteworthily, layered materials have been extensively explored as spintronic materials. Can layered double perovskites act as spintronic material and thus extend the application from optoelectronics to spintronics? In this paper, we investigated a series of 〈1 1 1〉-oriented layered magnetic double perovskites by high-throughput first-principles calculations to find suitable spintronic candidates. Three thermodynamically stable layered double perovskites Cs4MnSb2Cl12, Cs4CuSb2Cl12 and Cs4ScSb2Br12 are identified. The ground state structure of Cs4MnSb2Cl12 has the R-3m symmetry and exhibits antiferromagnetic (AFM) ordering, while Cs4CuSb2Cl12 favors the C2/m symmetry and shows AFM ordering, which are in line with the experimental observations. Cs4MnSb2Cl12 and Cs4CuSb2Cl12 are AFM semiconductors. Additionally, a new layered double perovskite Cs4ScSb2Br12 is predicted for the first time, favoring the C2/m symmetry and showing metallicity and AFM ordering, which may be synthesized experimentally in the future.It is well established that in the low-temperature limit, the two-dimensional quantum Heisenberg antiferromagnet on a square lattice (2DQHAFSL) exhibits an anomaly in its spectrum at short-wavelengths on the zone-boundary. In the vicinity of the (π, 0) point the pole in the one-magnon response exhibits a downward dispersion, is heavily damped and attenuated, giving way to an isotropic continuum of excitations extending to high energies. The origin of the anomaly and the presence of the continuum are of current theoretical interest, with suggestions focused around the idea that the latter evidences the existence of spinons in a two-dimensional system. Here we present the results of neutron inelastic scattering experiments and Quantum Monte Carlo calculations on the metallo-organic compound Cu(DCOO)2·4D2O (CFTD), an excellent physical realisation of the 2DQHAFSL, designed to investigate how the anomaly at (π, 0) evolves up to finite temperatures T/J∽2/3. Our data reveal that on warming the anomaly survives the loss of long-range, three-dimensional order, and that it is thus a robust feature of the two-dimensional system.
Read More: https://www.selleckchem.com/
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