8 results match your criteria: "Hebei Minzu Normal University[Affiliation]"

Using hyperspectral reflectance to detect changes in photosynthetic activity in leaves as a function of decreasing soil water content.

Photosynthetica

January 2025

Chengde Bijiashan Ecological Agriculture Technology Development Co., Ltd., 067000 Chengde, Hebei, China.

Application of hyperspectral reflectance technology to track changes in photosynthetic activity in () remains underexplored. This study aimed to investigate the relationship between hyperspectral reflectance and photosynthetic activity in the leaves of in response to a decrease in soil water content. Results demonstrated that the reflectance in both the visible light and near-infrared bands increased in conjunction with reduced soil water content.

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Fluorination Strategy for Benzimidazole Core Based Electron Acceptors Achieving over 19% Efficiency for Ternary Organic Solar Cells.

ACS Appl Mater Interfaces

December 2024

Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China.

The expansion of two-dimensional conjugated systems in nonfullerene electron acceptors (NFAs) has significantly advanced the molecular design and efficiency potential of organic solar cells (OSCs). This study introduces a novel class of NFAs featuring a benzimidazole core with varying degrees of peripheral fluorination, designated as YIS-4F, YIS-6F, and YIS-8F, respectively. Through systematic modulation of fluorine content, we observed that OSCs incorporating YIS-6F achieved the highest power conversion efficiency (PCE) of 17.

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LiFePO is a cathode material for lithium (Li)-ion batteries known for its excellent performance. However, compared with layered oxides and other ternary Li-ion battery materials, LiFePO cathode material exhibits low electronic conductivity due to its structural limitations. This limitation significantly impacts the charge/discharge rates and practical applications of LiFePO.

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Tailings pond poses a serious threat to the surrounding environment. This study aimed to explore the current status and mechanism of Hippophae rhamnoides (H. rhamnoides) restoration in the Zhoutaizi magnetite tailings pond in Chengde city by analyzing the physicochemical properties, heavy metal content, and microbial community characteristics of the rhizosphere soil of H.

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Soybean molasses, which contains high levels of raffinose family oligosaccharides (RFOs) such as stachyose and raffinose, is subjected to a process of bio-purification to remove sucrose while maintaining the RFOs, consequently increasing its value. This study employed morphological observation, physiological and biochemical studies, and molecular biology techniques to identify YA176, a yeast strain renowned for its effective bio-purification of soy molasses. Through single-factor and orthogonal experiments, optimal bio-purification conditions were established.

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Pressure-Induced Irreversible Metallization Accompanying Phase Transition of Chalcopyrite Cu(InGa)Se.

Inorg Chem

August 2024

Henan Key Laboratory of Magnetoelectronic Information Functional Materials, School of Electronics and Information, Zhengzhou University of Light Industry, Zhengzhou 450002, People's Republic of China.

Chalcopyrite copper-indium-gallium diselenides (CIGS) have emerged as promising materials with remarkable electronic properties and potential applicability to high-efficiency solar cells. The crystal and electronic structures of CIGS can be continuously tuned from their initial states under pressure. Although pressure-induced band gap closure in CIGS has been predicted in extensive theoretical studies, it has not been supported by experimental evidence.

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Anharmonic and quantum effects in Pm3̄ AlM(M = Hf, Zr)H6 under high pressure: A first-principles study.

J Chem Phys

July 2024

State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China.

First-principles calculations were employed to investigate the impact of quantum ionic fluctuations and lattice anharmonicity on the crystal structure and superconductivity of Pm3̄ AlM(M = Hf, Zr)H6 at pressures of 0.3-21.2 GPa (AlHfH6) and 4.

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Malaysia's excessive energy consumption has led to the depletion of traditional energy reserves such as oil and natural gas. Although Malaysia has implemented multiple policies to achieve sustainable national energy development, the current results are unsatisfactory. As of 2022, only 2% of the country's electricity supply comes from renewable energy, which accounts for less than 30% of the energy structure.

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