A novel silica‐assisted polybenzoxazine coating strategy is developed to synthesize N‐doped hollow porous carbon bowls (N‐HPCB). Due to the high specific surface area, N atom doping, and unique ...bowl‐like structure of N‐HPCB, the S/N‐HPCB cathode has stable cycling stability, excellent rate capability, and high volumetric energy density.
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FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SBCE, SBMB, UL, UM, UPUK
3D PdCu alloy nanosheets exhibit enhanced electrocatalytic activity toward hydrogen evolution reaction and ethanol oxidation reaction in alkaline media. Simultaneous hydrogen and acetate production ...via a solar‐powered cell for ethanol reforming has been fabricated using the nanosheets as bifunctional electrocatalysts. The device is promising for the production of both hydrogen and value‐added chemicals using renewable energy.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SBCE, SBMB, UL, UM, UPUK
Abstract The inequality in CO 2 emissions from agricultural energy consumption is a major challenge for coordinating low-carbon agricultural development across regions in China. However, the ...evolutionary characteristics and driving factors of inequality in China’s agricultural energy-related CO 2 emissions are poorly understood. In response, the Kaya–Theil model was adopted to examine the three potential factors influencing CO 2 emission inequality in China’s agricultural energy consumption. The results revealed that, from 1997 to 2021, agricultural energy-related CO 2 emissions per capita showed a significant upward trend, with prominent polarization and right-tailing phenomena. Overall, the inequality was on a downward trend, with the Theil index falling from 0.4109 in 1997 to 0.1957 in 2021. Meanwhile, the decomposition of the national inequality revealed that the within-group inequality declined from 0.3991 to 0.1634, which was greater than between-group inequality, based on zoning the 28 provinces into three grain production functional areas. As for the three kaya factors, the energy intensity contributed the most to the overall inequality, followed by the agricultural economic development and CO 2 emission intensity. Based on these results, this study provided some potential strategies to reduce agricultural-related CO 2 emissions.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
A general strategy, using mixed ligands, is utilized to synthesize atomically precise, intrinsically chiral nanocluster Ag78(DPPP)6(SR)42 (Ag78) where DPPP is the achiral ...1,3-bis(diphenyphosphino)propane and SR = SPhCF3. Ag78 crystallizes as racemates in a centric space group. Using chiral diphosphines BDPP = 2,4-bis(diphenylphosphino)pentane, the enantiomeric pair Ag78(R/S-BDPP)6(SR)42 can be prepared with 100% optical purity. The chiral diphosphines gives rise to, separately, two asymmetric surface coordination motifs composed of tetrahedral R3PAg(SR)3 moieties. The flexible nature of C–C–C angles between the two phosphorus atoms restricts the relative orientation of the tetrahedral R3PAg(SR)3 moieties, thereby resulting in the enantiomeric selection of the intrinsic chiral metal core. This proof-of-concept strategy raises the prospect of enantioselectively synthesizing optically pure, atomically precise chiral noble metal nanoclusters for specific applications.
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IJS, KILJ, NUK, PNG, UL, UM
Determining the structures of nanoparticles at atomic resolution is vital to understand their structure-property correlations. Large metal nanoparticles with core diameter beyond 2 nm have, to date, ...eluded characterization by single-crystal X-ray analysis. Here we report the chemical syntheses and structures of two giant thiolated Ag nanoparticles containing 136 and 374 Ag atoms (that is, up to 3 nm core diameter). As the largest thiolated metal nanoparticles crystallographically determined so far, these Ag nanoparticles enter the truly metallic regime with the emergence of surface plasmon resonance. As miniatures of fivefold twinned nanostructures, these structures demonstrate a subtle distortion within fivefold twinned nanostructures of face-centred cubic metals. The Ag nanoparticles reported in this work serve as excellent models to understand the detailed structure distortion within twinned metal nanostructures and also how silver nanoparticles can span from the molecular to the metallic regime.
Background Log odds of positive lymph nodes (LODDS) is a novel lymph node (LN) descriptor that demonstrates promising prognostic value in many tumors. However, there is limited information regarding ...LODDS in patients with non-small cell lung cancer (NSCLC), especially those receiving neoadjuvant therapy followed by lung surgery. Methods A total of 2059 patients with NSCLC who received neoadjuvant therapy and surgery were identified from the Surveillance, Epidemiology, and End Results (SEER) database. We used the X-tile software to calculate the LODDS cutoff value. Kaplan-Meier survival analysis and receiver operating characteristic (ROC) curve analysis were performed to compare predictive values of the American Joint Committee on Cancer (AJCC) N staging descriptor and LODDS. Univariate and multivariate Cox regression and inverse probability of treatment weighting (IPTW) analyses were conducted to construct a model for predicting prognosis. Results According to the survival analysis, LODDS had better differentiating ability than the N staging descriptor (log-rank test, P < 0.0001 vs. P = 0.031). The ROC curve demonstrated that the AUC of LODDS was significantly higher than that of the N staging descriptor in the 1-, 3-, and 5-year survival analyses (all P < 0.05). Univariate and multivariate Cox regression analyses showed that LODDS was an independent risk factor for patients with NSCLC receiving neoadjuvant therapy followed by surgery both before and after IPTW (all P < 0.001). A clinicopathological model with LODDS, age, sex, T stage, and radiotherapy could better predict prognosis. Conclusions Compared with the AJCC N staging descriptor, LODDS exhibited better predictive ability for patients with NSCLC receiving neoadjuvant therapy followed by surgery. A multivariate clinicopathological model with LODDS demonstrated a sound performance in predicting prognosis. Keywords: Log odds of positive lymph nodes (LODDS), Non-small cell lung cancer (NSCLC), Prognosis, Surveillance, epidemiology, and end results (SEER), Neoadjuvant therapy
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DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
The synchronous harvesting and conversion of multiple renewable energy sources for chemical fuel production and environmental remediation in a single system is a holy grail in sustainable energy ...technologies. However, it is challenging to develop advanced energy harvesters that satisfy different working mechanisms. Here, we theoretically and experimentally disclose the use of MXene materials as versatile catalysts for multi-energy utilization. Ti
C
T
MXene shows remarkable catalytic performance for organic pollutant decomposition and H
production. It outperforms most reported catalysts under the stimulation of light, thermal, and mechanical energy. Moreover, the synergistic effects of piezo-thermal and piezo-photothermal catalysis further improve the performance when using Ti
C
T
. A mechanistic study reveals that hydroxyl and superoxide radicals are produced on the Ti
C
T
under diverse energy stimulation. Furthermore, similar multi-functionality is realized in Ti
CT
, V
CT
, and Nb
CT
MXene materials. This work is anticipated to open a new avenue for multisource renewable energy harvesting using MXene materials.
Electronic skin (e-skin) is attracting huge attention due to its promising applications in diverse fields, including biomimetic machines, artificial intelligence and smart robotics. However, most ...e-skin circuits involve complicated fabrication processes and high costs. Here, a simple, fast fabrication method for highly conductive (6 × 10
6
S m
−1
) and stretchable (above 100%) e-skin based on the adhesion selectivity of a semi-liquid metal (Cu-EGaIn) on laser printed toner and a polymethacrylate (PMA) coating is developed. The stretchable e-skin circuits are shown to transfer to human skin and 3D substrates as wearable electronics for a variety of applications, such as temperature monitoring, interactive devices, and flexible displays. Different from other liquid metal patterning techniques that require expensive equipment or rigid metal traces such as silver nanoparticles, this approach can be used to directly print Cu-EGaIn on a stretchable substrate with a commercial laser printer in seconds. Further, by virtue of the advantage of the high radiological imaging capability of Cu-EGaIn, the e-skin is patterned as a computed tomography (CT) assistant localization marker, which is demonstrated to be very helpful for doctors and surgical robots to efficiently localize a biopsy, which is a core issue in clinics. The present study holds promise for future health care, surgical guidance and personalized entertainment.
Electronic skin (e-skin) is attracting huge attention due to its promising applications in diverse fields, including biomimetic machines, artificial intelligence and smart robotics.
Demonstrated herein are the preparation and crystallographic characterization of the family of fcc silver nanoclusters from Nichol’s cube to Rubik’s cube and beyond via ligand-control (thiolates and ...phosphines in this case). The basic building block is our previously reported fcc cluster Ag14(SPhF2)12(PPh3)8 (1). The metal frameworks of Ag38(SPhF2)26(PR′3)8 (2 2 ) and Ag63(SPhF2)36(PR′3)8+ (2 3 ), where HSPhF2 = 3,4-difluorothiophenol and R′ = alkyl/aryl, are composed of 2 × 2 = 4 and 2 × 2 × 2 = 8 metal cubes of 1, respectively. All serial clusters share similar surface structural features. The thiolate ligands cap the six faces and the 12 edges of the cube (or half cube) while the phosphine ligands are terminally bonded to its eight corners. On the basis of the analysis of the crystal structures of 1, 2 2 , and 2 3 , we predict the next “cube of cubes” to be Ag172(SR)72(PR′3)8 (3 3 ), in the evolution of growth of this cluster sequence.
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IJS, KILJ, NUK, PNG, UL, UM
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