Porous α‑MoO₃/MWCNT Nanocomposite Synthesized via a Surfactant-Assisted Solvothermal Route as a Lithium-Ion-Battery High-Capacity Anode Material with Excellent Rate Capability and Cyclability

A high-performance α-MoO₃/multiwalled carbon nanotube (MWCNT) nanocomposite material is synthesized via a novel surfactant-assisted solvothermal process followed by low-temperature calcination. Its structure, composition, and morphology are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, carbon element analysis, nitrogen adsorption–desorption determination, scanning electron microscopy, and transmission electron microscopy techniques. Its electrochemical performance as a high-capacity lithium-ion-battery anode material is investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic discharge/recharge methods. This composite material exhibits not only high capacity but also excellent rate capability and cyclability. For example, when the discharge/charge current density is increased from 0.1 to 2 A g^–1, the reversible charge capacity is only decreased from 1138.3 to 941.4 mAh g^–1, giving a capacity retention of 82.7%. Even if it is cycled at a high current density of 20 A g^–1, a reversible charge capacity of 490.2 mAh g^–1 is still retained, showing a capacity retention of 43.1%. When it is repeatedly cycled at a current of 0.5 A g^–1, the initial reversible charge capacity is 1041.1 mAh g^–1. A maximum charge capacity of 1392.2 mAh g^–1 is achieved at the 292th cycle. After 300 cycles, a high charge capacity of 1350.3 mAh g^–1 is maintained. Enhancement of the electrical conduction contributed by the MWCNT composite component as well as the loose and porous texture of the MoO₃/MWCNT composite is suggested to be responsible for the excellent performance

Short- and long-term prognostic value of hyponatremia in patients with acute coronary syndrome: A systematic review and meta-analysis

<div><p>Hyponatremia is relevant to heart failure, liver cirrhosis and stroke, but the prognostic value of serum sodium levels in patients with acute coronary syndrome are still unclear. So we did a systematic review and meta-analysis to assess the prognostic value of hyponatremia on adverse events in patients after ACS. We systematically searched PubMed, Embase and Cochrane Library to find literatures which studied the prognostic value of hyponatremia in patients with ACS. Our main endpoints were the all-cause mortality and heart failure in the short- and long-term. Of 369 identified studies, 20 studies were included in our analysis. Compared with the normal natrium, hyponatremia was significantly associated with the increased risks of all-cause mortality within 30 days (RR: 2.18; 95%CI: 1.96–2.42) and during the follow-ups (HR: 1.74; 95%CI: 1.56–1.942). For the second endpoint of short- and long-term heart failure, the pooled effect sizes in hyponatremia patients were 1.72(95%CI: 1.38–2.14) and 1.69(95%CI: 1.12–2.55) respectively. In conclusion, hyponatremia has a significant prognostic value for short- and long-term adverse event in patients after ACS, the dynamic monitoring of serum sodium levels may could help physicians to identify high risk ACS patients and to stratify risk for optimal management.</p></div

Dual-Band, Efficient Self-Powered Organic Photodetectors with Isotype Subphthalocyanine-Based Heterojunctions toward Secure Optical Communications

High-performance heterojunction organic photodetectors (OPDs) are of great significance in optical detecting technology due to their tailorable optoelectronic properties. Herein, we designed and synthesized three n-type subphthalocyanine (SubPc) derivatives PhO-BSubPcF12, CHO-PhO-BSubPcF12, and NO2-PhO-BSubPcF12 via axial nonhalogen substitution on fluorinated SubPc. These SubPc derivatives exhibit improved intramolecular charge transfer, high electron mobilities, optimized energy levels, and good thermal stability. The novel isotype p–n SubPc heterojunctions are evaluated as photosensitive layers in OPDs, which show a UV–visible dual-band response and self-powered effect. The optimal OPD with Br-BSubPc/NO2-PhO-BSubPcF12 presents stable and superior performances with a high responsivity (R) of 0.14 A W–1, a peak external quantum efficiency (EQE) of 30.6%, and an extremely low dark current of 0.92 nA cm–2 under a 570–595 nm illumination without a bias voltage. It has outperformed most of the reported SubPc-based OPDs. The better interfacial contact of p–n SubPc derivatives leads to a large depletion region with decreased trap densities as well as a low carrier recombination rate, which is conducive to the photoinduced carriers’ separation and well-balanced transport, resulting in high device performances. Moreover, a secure communication strategy is successfully demonstrated by dual-band optimal OPD. This work is expected to provide some guidance for molecular engineering and device performance toward multifunctional electronics

Flow chart of the selection process.

<p>Flow chart of the selection process.</p

Funnel plots of studies included in the meta-analysis for short-term mortality.

<p>Funnel plots of studies included in the meta-analysis for short-term mortality.</p

Subgroup analyses of short-term mortality according to different occurrence time of hyponatremia.

<p>Subgroup analyses of short-term mortality according to different occurrence time of hyponatremia.</p

Heart failure in short- and long-terms.

<p>Heart failure in short- and long-terms.</p

Funnel plots of studies included in the meta-analysis for long-term mortality.

<p>Funnel plots of studies included in the meta-analysis for long-term mortality.</p

All-cause mortality during the following-ups.

<p>All-cause mortality during the following-ups.</p

Coupling effect of high-temperature and microbial community on the removal of antibiotics and antibiotic resistance genes in sludge hyper-temperature aerobic bio-drying system

Antibiotic residues and antibiotic resistance genes (ARGs) in sludge pose high risks to human health and the ecological environment. Hyper-temperature aerobic bio-drying system (HTAB) has the potential for higher degradation efficiency of antibiotics and ARGs due to high-temperature and rapid organic matter degradation. This study firstly reports two sludge HTAB processes, hyperthermophilic aerobic bio-drying (HAB) and electro-assisted heating bio-drying (EHAB), for the removal efficiency of four types of antibiotics, quinolones, tetracyclines, macrolides, and sulfonamide antibiotics, and ARGs, as well as the relationship between antibiotics and ARGs. The microbial communities of the two HTAB processes showed significant differences compared to the conventional bio-drying process (CAB). Compared to the CAB, the HTAB significantly improved the removal efficiency of antibiotics and ARGs and shortened the half-life of antibiotics. In the two HTAB processes, the total antibiotic removal of the HAB and EHAB processes was 78.11 and 74.15%, respectively. Compared with the EHAB process, the HAB process had higher removal for all four types of antibiotics, especially significantly improving the removal efficiency of tetracyclines. Compared to the CAB, both HTAB processes significantly enhanced the removal efficiency of ARGs and mobile genetic elements (MGEs). In the two HTAB processes, the HAB showed a higher removal efficiency of ARGs and MGEs compared to the EHAB. The relevant mechanisms indicated that temperature and changes in microbial communities jointly affected the removal efficiency of antibiotics and ARGs.</p