Despite the fact that antimony triselenide (Sb2Se3) thin‐film solar cells have undergone rapid development in recent years, the large open‐circuit voltage (VOC) deficit still remains as the biggest ...bottleneck, as even the world‐record device suffers from a large VOC deficit of 0.59 V. Here, an effective interface engineering approach is reported where the Sb2Se3/CdS heterojunction (HTJ) is subjected to a post‐annealing treatment using a rapid thermal process. It is found that nonradiative recombination near the Sb2Se3/CdS HTJ, including interface recombination and space charge region recombination, is greatly suppressed after the HTJ annealing treatment. Ultimately, a substrate Sb2Se3/CdS thin‐film solar cell with a competitive power conversion efficiency of 8.64% and a record VOC of 0.52 V is successfully fabricated. The device exhibits a much mitigated VOC deficit of 0.49 V, which is lower than that of any other reported efficient antimony chalcogenide solar cell.
A heterojunction post‐annealing treatment is utilized to suppress the nonradiative recombination for a highly competitive power conversion efficiency of 8.64% and a record open‐circuit voltage (VOC) of 520 mV in Sb2Se3 thin‐film solar cells. The VOC deficit of the device is lower than that of any other reported efficient antimony chalcogenide solar cells.
Objectives
LncRNA nuclear‐enriched abundant transcript 1 (NEAT1) participates in the development and progression of multiple malignancies. However, the molecular mechanism by which NEAT1 contributes ...to colorectal cancer (CRC) remains unclear.
Methods
The association between lncRNA NEAT1 expression and clinicopathological characteristics and prognosis in patients with CRC was analysed by TCGA RNA‐sequencing data. MTT, colony formation, flow cytometry, transwell assays and a xenograft tumour model were used to assess the functions of NEAT1. Bioinformatics and spearman correlation analysis were used to identify the NEAT1‐specific binding with miRNAs, and luciferase gene report and RIP assays were performed to confirm the interaction between miR‐193a‐3p (miR‐193a) and NEAT1 in CRC cells.
Results
Upregulation of NEAT1 expression was significantly correlated with TNM stage, poor survival and tumour recurrence in patients with CRC, and acted as an independent prognostic factor for tumour recurrence. Knockdown of NEAT1 suppressed cell proliferation, colony formation abilities and invasive potential and induced cell apoptosis, but overexpression of NEAT1 reversed these effects. Furthermore, NEAT1 was confirmed to act as a sponge of miR‐193a, and knockdown of NEAT1 attenuated miR‐193a inhibitor‐induced tumour promoting effects and L17RD expression in CRC cells. miR‐193a harboured negative correlation with NEAT1 and IL17RD expression in CRC specimens. In vivo experiment further validated the inhibitory effects of NEAT1 knockdown on xenograft tumour growth.
Conclusion
Our findings demonstrate that lncRNA NEAT1 acts as an oncogenic role in CRC cells by sponging miR‐193a and may represent a potential marker for CRC patients.
Myeloid differentiation primary response protein 88 (MyD88) is a ubiquitously expressed cytoplasmic adaptor protein that plays a central role in the Toll-like receptor (TLR) and interleukin-1 ...receptor (IL-1R) signaling pathways. TLR/IL-1R pathways regulate the proliferation and differentiation of cells involved in the innate and adaptive immunity. Although the general TLR/IL-1R activation cascade is well understood, the molecular mechanisms involving MyD88 have only begun to surface in the past decade. In this review, we explore MyD88 structural biology, the role of posttranslational modifications (PTMs), and the recent developments in MyD88 inhibitor discovery and use. We also highlight the potential application of MyD88-targeted therapies in human diseases.
Although current guidelines for AKI suggested against the use of furosemide in AKI management, the effect of furosemide on outcomes in real-world clinical settings remains uncertain. The aim of the ...present study was to investigate the association between furosemide administration and outcomes in critically ill patients with AKI using real-world data.
Critically ill patients with AKI were identified from the Medical Information Mart for Intensive Care (MIMIC)-III database. Propensity score (PS) matched analysis was used to match patients receiving furosemide to those without diuretics treatment. Linear regression, logistic regression model, and Cox proportional hazards model were used to assess the associations between furosemide and length of stay, recovery of renal function, and in-hospital and 90-day mortality, respectively.
A total of 14,154 AKI patients were included in the data analysis. After PS matching, 4427 pairs of patients were matched between the patients who received furosemide and those without diuretics treatment. Furosemide was associated with reduced in-hospital mortality hazard ratio (HR) 0.67; 95% CI 0.61-0.74; P < 0.001 and 90-day mortality HR 0.69; 95% CI 0.64-0.75; P < 0.001, and it was also associated with the recovery of renal function HR 1.44; 95% CI 1.31-1.57; P < 0.001 in over-all AKI patients. Nevertheless, results illustrated that furosemide was not associated with reduced in-hospital mortality in patients with AKI stage 0-1 defined by UO criteria, AKI stage 2-3 according to SCr criteria, and in those with acute-on-chronic (A-on-C) renal injury.
Furosemide administration was associated with improved short-term survival and recovery of renal function in critically ill patients with AKI. Furosemide was especially effective in patients with AKI UO stage 2-3 degree. However, it was not effective in those with AKI SCr stage 2-3 and chronic kidney disease. The results need to be verified in randomized controlled trials.
Mare volcanics on the Moon are the key record of thermo-chemical evolution throughout most of lunar history
. Young mare basalts-mainly distributed in a region rich in potassium, rare-earth elements ...and phosphorus (KREEP) in Oceanus Procellarum, called the Procellarum KREEP Terrane (PKT)
-were thought to be formed from KREEP-rich sources at depth
. However, this hypothesis has not been tested with young basalts from the PKT. Here we present a petrological and geochemical study of the basalt clasts from the PKT returned by the Chang'e-5 mission
. These two-billion-year-old basalts are the youngest lunar samples reported so far
. Bulk rock compositions have moderate titanium and high iron contents with KREEP-like rare-earth-element and high thorium concentrations. However, strontium-neodymium isotopes indicate that these basalts were derived from a non-KREEP mantle source. To produce the high abundances of rare-earth elements and thorium, low-degree partial melting and extensive fractional crystallization are required. Our results indicate that the KREEP association may not be a prerequisite for young mare volcanism. Absolving the need to invoke heat-producing elements in their source implies a more sustained cooling history of the lunar interior to generate the Moon's youngest melts.
Three new types of lanthanide coordination polymersone-dimensional (1D) {Ln(TCMA)(HTCMA)·(DMF)·(H2O)2} n (1–2), three-dimensional (3D) {Ln(TCMA)(NO3)} n (3–4), and zero-dimensional (0D) ...Ln4(TCMA)4(OH)4(H2O)8 (5–6) (Ln = Eu, Tb) have been hydrothermally synthesized by using the ligand N,N,N-tris{(2′-carboxy1,1′-biphenyl-4-yl)methyl}methylammonium chloride (H3TCMA+Cl). Interestingly, the 1D chain and 3D Ln-MOFs can be transformed to a more stable 0D cage structure by changing temperature-induced ligand’s configuration transformation, which is attributed to the ligand’s semirigid feature. Furthermore, the crystal structures of 1–6 were characterized and confirmed by X-ray single-crystal analysis, X-ray diffraction (XRD), thermogravimetric analysis (TGA), ultimate analysis, and infrared (IR) spectroscopy. The luminescence detection results show that the 3D Eu-MOFs have good sensitivity and selectivity to detect Fe3+ ions in methanol solutions. And, with careful adjustment of metal ratios (Eu/Tb) in the reaction mixtures, color tuning was easily achieved. Moreover, lifetime data and quantum yield are reported for these complexes (1–6) prepared in this study.
Three lanthanide polymers {Ln(TMCA)(DEF)(H
2
O)·(CH
3
CN)}
n
(Ln = Eu
1
; Tb
2
; Gd
3
; H
3
TMCA = 4′,4′,4′-(trimethylamino)-tris(1,1′-biphenyl)-2-carboxylic acid) were synthesized under solvothermal ...conditions. The coordination polymers were characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis and single-crystal X-ray diffraction. Single crystal X-ray diffraction analyses showed that the complexes
1
,
2
and
3
are isostructural 2D coordination networks with a point symbol of {4
4
·6
2
}. Complexes
1
and
2
exhibit red and green emission, assigned to the
5
D
0
→
7
F
J
(
J
= 0-4) transitions of the Eu
3+
ion and
5
D
4
→
7
F
J
(
J
= 6-2) transitions of the Tb
3+
ion, respectively. The luminescence explorations reveal that the Eu-MOF possesses favorable selectivity and sensitivity for testing Fe
3+
in CH
3
OH solutions. Additionally, color tuning was easily achieved by varying the europium : terbium metal ratios in the reaction mixtures.
Three lanthanide polymers {Ln(TMCA)(DEF)(H
2
O)·(CH
3
CN)}
n
(Ln = Eu
1
; Tb
2
; Gd
3
; H
3
TMCA = 4′,4′,4′-(trimethylamino)-tris(1,1′-biphenyl)-2-carboxylic acid) were synthesized under solvothermal conditions.
Inorganic films possess much higher thermoelectric performance than their organic counterparts, but their poor flexibilities limit their practical applications. Here, Sb2Te3/Tex hybrid thin films ...with high thermoelectric performance and flexibility, fabricated via a novel directional thermal diffusion reaction growth method are reported. The directional thermal diffusion enables rationally tuning the Te content in Sb2Te3, which optimizes the carrier density and leads to a significantly enhanced power factor of >20 µW cm–1 K–2, confirmed by both first‐principles calculations and experiments; while dense boundaries between Te and Sb2Te3 nanophases, contribute to the low thermal conductivity of ≈0.86 W m–1 K–1, both induce a high ZT of ≈1 in (Sb2Te3)(Te)1.5 at 453 K, ranking as the top value among the reported flexible films. Besides, thin films also exhibit extraordinary flexibility. A rationally designed flexible device composed of (Sb2Te3)(Te)1.5 thin films as p‐type legs and Bi2Te3 thin films as n‐type legs shows a high power density of >280 µW cm–2 at a temperature difference of 20 K, indicating a great potential for sustainably charging low‐power electronics.
A high ZT of ≈1 at 453 K is achieved in an inorganic Sb2Te3/Te hybrid thin film via a novel directional thermal diffusion reaction growth method with extraordinary flexibility, and the rationally designed flexible device shows a high power density by a low‐temperature difference.
High relative contact electrical resistance and poor flexibility in inorganic thin‐film thermoelectric devices significantly limit their practical applications. To overcome this challenge, a one‐step ...thermal diffusion method to fabricate assembly‐free inorganic thin‐film thermoelectric devices is developed, where the in situ grown electrode delivers an excellent leg‐electrode contact, leading to high output power and flexibility in the prepared p‐type Sb2Te3/n‐type Bi2Te3 thin‐film device, which is composed of 8 pairs of p‐n junctions. Such a device shows a very low relative contact electrical resistance of 7.5% and a high power density of 1.42 mW cm–2 under a temperature difference of 60 K. Less than 10% change of the whole electrical resistance before and after bending test indicates the robust bending resistance and stability of the device. This study indicates that the novel assembly‐free one‐step thermal diffusion method can effectively enhance the leg‐electrode contact, the device thermoelectric performance, bending resistance, and stability, which can inspire the development of thin‐film thermoelectric devices.
In this study, highly flexible inorganic thin‐films device through one‐step thermal diffusion synthesis process is successfully prepared. It secures good contact between the electrodes and the thermoelectric legs through in situ growth of the electrode, together with the highly crystallized Sb2Te3 and Bi2Te3 thermoelectric legs, contributing to ultralow relative contact resistance and high thermoelectric device performance.
Acoustic emission (AE) and microseismic (MS) monitoring technologies have been successfully applied to material performance analysis, material detection, building and rockmass structure stability, ...and for early warnings in civil engineering ...
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