Floe size distribution data from Multi-scale satellite observations of Arctic sea ice: new insight into the life cycle of the floe size distribution

Floe size distribution data used in this stud

A study about the impact of energy saving climate on college students’ energy saving behavior: based on analysis using the hierarchical linear model

College students, as a new force in energy saving and emission reduction, play an important role in environmental protection. However, there is a lack of empirical research on the factors that affect college students’ energy-saving behaviors at the individual and organizational levels. In this study, an extended theory of planned behavior (TPB) model is employed to narrow this gap. A total of 661 valid data points collected from 51 Chinese universities were used to test related hypotheses. The findings reveal that attitude, perceived responsibility, perceived behavior control and subjective norms are significantly related to energy-saving intention. Meanwhile, energy-saving intention is the most decisive factor for Chinese college students’ energy-saving behavior. More importantly, this paper verified the positive effect of organizational factors (energy-saving climate) on students’ energy-saving intentions and behaviors. Finally, implications for improving students’ energy-saving intention and theoretical and managerial implications are discussed.</p

Additional file 1 of Urban-rural differences in the association between social activities and depressive symptoms among older adults in China: a cross-sectional study

Additional file 1: STable 1. Associations between social activities and depressive symptoms among urban and rural older adults using a dataset with multiple imputation techniques (all missing variables). STable 2. Associations between social activities and depressive symptoms among urban and rural older adults using a dataset with complete cases. STable 3. Multiple linear regression model testing the association between social activities and depressive symptoms

Collective Behavior of Single-Atom Catalysts: A Synergistic Effect between Strain and Site Configuration

Fe single-atom catalysts on N-doped graphene (Fe–NC) exhibit good and variable catalytic activity linked to the active site density and configuration. Here, we comprehensively investigate the Fe–NC catalysts under various strained states and site densities to address the interplay between the active site density, local strain, site geometry, and oxygen evolution reaction (OER) activity. It is found that the active site density is closely associated with in-plane strain, which can be tuned by popping up Fe single atoms from the graphene film and, thereby, modulating the OER catalytic activity. Further analysis indicates that there exist three orientations of the FeN4 active site, each introducing specific anisotropic strain. As a result, the in-plane strain correlates with both the orientation and density of the active site, ultimately influencing catalytic activity. Our findings demonstrate the synergistic effects of multiple factors in single-atom catalysts, providing new insights into the rational design and fine tuning single-atom catalysts via collective interactions

High Internal Phase Emulsion for Constructing Chiral Helical Polymer-Based Circularly Polarized Luminescent Porous Materials

Polymerized high internal phase emulsions (polyHIPEs) with circularly polarized luminescence (CPL), as an interesting class of porous materials, are of great significance for the development of CPL porous materials but have not been reported so far. Herein, we report the construction of polyHIPE-based CPL porous materials, taking advantage of an adsorption strategy. The pristine polyHIPEs constructed by chiral helical polymers, which acted as a chiral microenvironment, were fabricated by coordination polymerization of chiral acetylene monomers (R/S-SA) using HIPEs as templates. Achiral fluorescent small molecules were dispersed in the pores of the 3D porous organic chiral polymer matrix provided by polyHIPEs through the adsorption strategy, and CPL-active porous materials with blue, cyan, and green emissions were constructed using a fluorescence-selective absorption mechanism that does not rely on chirality transfer at the molecular level. The maximum luminescence dissymmetry factor (glum) value was −2.6 × 10–2. This work establishes a new and simple way for developing CPL porous materials

Application in Anticounterfeiting for Multistimuli Smart Luminescent Materials Based on MOF-on-MOF

The generation of smart responsive materials that can perform multiple drastic optical outputs upon different triggers provides a good platform to encode and hide the information and create multilevel security. In this paper, a smart multiresponsive MOF-on-MOF material was reported using one MOF (HPU-14) as a platform to grow ZIF-8 on the outer layer, combining different emitter centers such as anthracene (ANT) and lanthanide ions (Ln3+) confined into two MOFs. Due to the existence of ANT in the pores of ZIF-8, this composite material can exhibit reversible photoswitching behavior under a 365 nm ultraviolet (UV) lamp and enable “resetting and reusing” dynamic anticounterfeiting application. Meanwhile, when treated by an acid/alkali gas, this material can also display reversible switching behavior under 254 nm UV irradiation, which is attributed to the loading of Ln3+ on HPU-14. We demonstrated that this excellent practical anticounterfeiting material can decipher the right information only by following a strict stimuli sequence. Therefore, this MOF-on-MOF material synthesis technology for sophisticated counterfeiters, which makes the protected information highly secure, could open a new way to design multilevel anticounterfeiting materials

Additional file 3: of Computational modelling of energy balance in individuals with Metabolic Syndrome

Table S2. Relative contribution of substrate oxidation to peripheral and hepatic energy expenditure. The relative contribution of substrate oxidation is depicted as mean ± standard deviation, and the minimum and maximum bounds are denoted between brackets. The number of virtual individuals adhering to the physiological bound of at least 57% fat oxidation is highlighted in grey. (DOCX 16 kb

Exploration of Isoquinoline Alkaloids as Potential Inhibitors against Human Islet Amyloid Polypeptide

Type-2 diabetes mellitus (T2DM) is one of the most concerning public health problems because of its high incidence, multiple complications, and difficult treatment. Human islet amyloid polypeptide (hIAPP) is closely linked to T2DM because its abnormal self-assembly causes membrane damage and cell dysfunction. The development of potential inhibitors to prevent hIAPP fibrillation is a promising strategy for the intervention and treatment of diabetes. Natural isoquinoline alkaloids are used as effective medication that targets different biomolecules. Although studies explored the efficacy of berberine, jatrorrhizine, and chelerythrine in diabetes, the underlying mechanism remains unclear. Herein, three isoquinoline alkaloids are selected to reveal their roles in hIAPP aggregation, disaggregation, and cell protection. All three compounds displayed good inhibitory effects on peptide fibrillation, scattered the preformed fibrils into small oligomers and most monomers, and upregulated cell viability by reducing hIAPP oligomerization. Moreover, combined biophysical analyses indicated that the compounds affected the β-sheet structure and hydrophobicity of polypeptides significantly, and the benzo­[c]­phenanthridine structure of chelerythrine was beneficial to the inhibition of hIAPP aggregation and their hydrophobic interaction, compared with that of berberine and jatrorrhizine. Our work elaborated the effects of these alkaloids on hIAPP fibrillation and reveals a possible mechanism for these compounds against T2DM

Efficient White Light Emission of 0D Lead-Free Indium-Based Halide Perovskite and the Intermediate State Promotion Mechanism of the Nonadiabatic Transition to Self-Trapped Exciton via Antimony(III) Cation Doping

In this work, we report a zero-dimensional single-component (0D) (C4H16N3)­InBr6 (C4H13N3 (DETA) = diethylenetriamine), which emits white light through a simple mechanochemical method. The blue emission band at 400 nm and the yellow emission band at 550 nm are coupled to give rise to cold white emission. Theoretical calculations and spectra reveal that the photoluminescence of (DETA)­InBr6 at 400 and 550 nm is attributed to free exciton and self-trapped exciton emission, respectively. It demonstrates that the nonadiabatic transition from free exciton to self-trapped exciton occurs at the ultrafast scale of <210 fs by a femtosecond transient absorption (fs-TA) measurement. The energy level of the antimony cation is located between the free exciton and the self-trapped exciton state as an “intermediate state”. When doping Sb3+, energy barriers are decreased and the nonradiative recombination process is suppressed, leading to an increase in the photoluminescence quantum yields (PLQY) from 1.40% to 24.12% for (DETA)­InBr6:1.5%Sb3+. In addition, the energy level of Sb3+ can facilitate the nonadiabatic transition to a self-trapped exciton, and the free exciton emission disappeared, which results in the transformation from white to yellow emission with 585 nm. These findings not only shed light on the mechanism of indium-based halide perovskite enhanced photoluminescence via an antimony­(III) cation, but pave the way for the application of a simple method of mixing organic–inorganic metal halides in solid-state lighting

Application in Anticounterfeiting for Multistimuli Smart Luminescent Materials Based on MOF-on-MOF

The generation of smart responsive materials that can perform multiple drastic optical outputs upon different triggers provides a good platform to encode and hide the information and create multilevel security. In this paper, a smart multiresponsive MOF-on-MOF material was reported using one MOF (HPU-14) as a platform to grow ZIF-8 on the outer layer, combining different emitter centers such as anthracene (ANT) and lanthanide ions (Ln3+) confined into two MOFs. Due to the existence of ANT in the pores of ZIF-8, this composite material can exhibit reversible photoswitching behavior under a 365 nm ultraviolet (UV) lamp and enable “resetting and reusing” dynamic anticounterfeiting application. Meanwhile, when treated by an acid/alkali gas, this material can also display reversible switching behavior under 254 nm UV irradiation, which is attributed to the loading of Ln3+ on HPU-14. We demonstrated that this excellent practical anticounterfeiting material can decipher the right information only by following a strict stimuli sequence. Therefore, this MOF-on-MOF material synthesis technology for sophisticated counterfeiters, which makes the protected information highly secure, could open a new way to design multilevel anticounterfeiting materials