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The construction of ultra-wide working face is helpful to promote the safe and efficient mining of coal resources. However, due to the limitation of roadway space and construction conditions, the detection depth of conventional mine geophysics is limited, and the geological information inside the ultra-wide working face and within a certain range of roof and floor cannot be accurately obtained. In order to improve the detection accuracy of the water rich area on the bottom plate of the ultrawide working face and provide a basis for the processing and interpretation of measured data, based on the summary and analysis of current mine geophysical detection technology, the three-dimensional(3D) DC resistivity method that can be applied to the detection of the ultrawide working face, combined with the occurrence characteristics of limestone water on the bottom plate of the working face 21106 in a coal mine in Yongcheng, Henan, was systematically studied using a combination of theoretical analysis, numerical simulation, and measured data to study the data characteristics and resolution ability of 3D observation and 2D observation modes. The research results show that: Compared with the traditional two-dimensional observation mode of the same side transmitter-receiver, the three-dimensional observation mode of the opposite side transmitter-receiver is more sensitive to the low resistance body on the floor of the mining face. The data obtained by the three-dimensional observation mode of the opposite side transmitter-receiver are calculated by the conventional apparent resistivity formula, the obtained apparent resistivity is sometimes opposite to the actual electrical property, so it is necessary to use the three-dimensional inversion method for data processing. Finally, the 3D model data observed during the 21106 work in a coal mine in Yongcheng, Henan Province was subjected to 3D inversion processing, and the reliability of the 3D inversion results was verified through underground drilling data. The research results provide a theoretical basis for the two-dimensional observation and three-dimensional observation data interpretation of the pole-pole device conditions.

The smellscape of garden plants plays a crucial role in promoting human well-being. Despite this, empirical data on the specific effects of distinct stimulation methods on public health remain insufficient. The objective of this research is to investigate the influence of three distinct sensory modalities, olfactory, visual, and their combined effect, on both physiological and psychological reactions to a pine forest's smellscape. A sample of 95 college students was selected, with data collected through both physiological and psychological measurements. The analysis focused on variables such as blood pressure (BP), pulse rate (P), pulse pressure (PP), skin conductance (SC), brainwave patterns (α, β), the odor emotion semantic differential (SD), and the State Anxiety Inventory (S-AI) scale. The results reveal that in the pine forest aroma environment, the central nervous system shows a compromise effect during olfactory–visual interaction, with greater autonomic nervous system (ANS) activation compared with either stimulus alone, suggesting cumulative effects. Psychologically, the influence of olfactory interaction on anxiety fell between that of visual and olfactory stimulation. Participants consistently reported that the combination of both the sight and scent of a pine forest was the most invigorating. Furthermore, research revealed that combining olfactory and visual stimuli led to a more profound amplification of positive environmental perceptions compared with when each sense was engaged individually. These findings lay the groundwork for understanding how garden plant aromas contribute to human well-being. [ABSTRACT FROM AUTHOR]

Hole‐transporting layer‐free carbon‐based perovskite solar cells (HTL‐free C‐PSCs) hold great promise for photovoltaic applications due to their low cost and outstanding stability. However, the low power conversion efficiency (PCE) of HTL‐free C‐PSCs mainly results from grain boundaries (GBs). Here, epitaxial growth is proposed to rationally design a hybrid nanostructure of PbI2 nanosheets/perovskite with the desired photovoltaic properties. A post‐treatment technique using tri(2,2,2‐trifluoromethyl) phosphate (TFEP) to induce in situ epitaxial growth of PbI2 nanosheets at the GBs of perovskite films realizes high‐performance HTL‐free C‐PSCs. The structure model and high‐resolution transmission electron microscope unravel the epitaxial growth mechanism. The epitaxial growth of oriented PbI2 nanosheets generates the PbI2/perovskite heterojunction, which not only passivates defects but forms type‐I band alignment, avoiding carrier loss. Additionally, Fourier‐transform infrared spectroscopy, 31P NMR, and 1H NMR spectra reveal the passivation effect and hydrogen bonding interaction between TFEP and perovskite. As a result, the VOC is remarkably boosted from 1.04 to 1.10 V, leading to a substantial gain in PCE from 14.97% to 17.78%. In addition, the unencapsulated PSC maintains the initial PCE of 80.1% for 1440 h under air ambient of 40% RH. The work offers a fresh perspective on the rational design of high‐performance HTL‐free C‐PSCs. [ABSTRACT FROM AUTHOR]

Lycium ruthenicum Murr. is rich in polysaccharides, and the polysaccharides in Lycium ruthenicum Murr. (LRPS) have various bioactivities, such as antioxidant activity, anti-tumor activity, neuroprotective activity, and immunomodulatory activity. It has broad prospects in the development of functional foods and pharmaceuticals. Researchers have found that the structural characteristics of LRPS, such as molecular weight, monosaccharide composition, primary structure, etc., have a significant impact on their bioactivities. Therefore, studying the structure of LRPS is of great significance in revealing their bioactivities and mechanisms. This study, based on introducing the preparation methods of LRPS, focuses on reviewing the research progress on the main structural characteristics, various bioactivities, and mechanisms of action of LRPS. In addition, the study provides prospects for the development of LRPS in the fields of food and medicine, aiming to provide theoretical support for its deep processing and application. [ABSTRACT FROM AUTHOR]

The second near-infrared window (NIR-II) in the range of 1000–1400 nm is ideal for in vivo imaging and sensing through reduced scattering, absorption, and autofluorescence. However, there are only a few nanophosphor systems with emission in the NIR-II region. Here, we report on Mn5+-doped Ba5(PO4)3Cl nanoparticles (BPCl:Mn5+ NPs, d < 50 nm) toward NIR-II temperature sensing. BPCl:Mn5+ NPs are made by a two-step (hydrothermal and anion exchange) method. XRD, SEM, and TEM results showed that the as-prepared BPCl:Mn5+ NPs show high crystallinity, uniform size, and sphere-like morphology. The nanoparticles exhibit a broad excitation band of 500–850 nm and a temperature-sensitive peak emission at 1175 nm in the NIR-II range. NIR-II temperature sensing by 1E emission intensity is demonstrated with good linear fitting (R2 = 0.9895), high sensitivity (2.30% at 373 K), and good repeatability (99.0%). Thus, our study provides a path to develop a new NIR-II thermometer based on tetrahedral Mn(V) coordination. [ABSTRACT FROM AUTHOR]