NATURE
·
2026
·
IF 48.5
Zhang Kun,Liu Yifang,Gao Ying,Zhang Zhe,Wang Haoyu,Li Wanwu,Fan Xiaoyan,Ding Jiayu,Guan Ziqi,Kawaguchi Shogo,Du Zhaoxu,Zhang Jiaqing,Su Lei,Li Yiming,Jiang Runjian,Li Yifan,Jia Yating,Wang Yanxu,Lin Jianchao,Zhu Jinlong,Tong Peng,Qian Suxin,Li Kuo,Zhang Zhidong,Li Bing
Refrigeration is indispensable to modern society 1 , yet the dominant vapour-compression systems rely on environmentally harmful fluorocarbon refrigerants with high global warming potential 2 , 3 , 4 . Solid-state caloric refrigeration offers a low-carbon alternative 5 , 6 , 7 , but its practical deployment has been hindered by limited cooling capacity and the inefficient indirect heat transfer that requires secondary fluids. Here we report an extreme barocaloric effect in NH 4 SCN aqueous solutions enabled by pressure-tuned dissolution and precipitation. This mechanism delivers an exceptionally large cooling capacity and markedly enhanced cooling efficiency. We obtain an in situ temperature drop of 26.8 K in the solution at room temperature, surpassing all known caloric materials. A Carnot-like cycle is designed to deliver 67 J g −1 cooling capacity per cycle with a second-law efficiency of 77%, benefiting from the extremely large temperature drops and direct heat transfer due to the self-circulating aqueous solution. Beyond the phase-transition scenario, this dissolution-based approach that combines the merits of current leading technologies emerges as a promising sustainable refrigeration solution.
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DOI
PubMed
高影响因子
MOLECULAR NEUROBIOLOGY
·
2026
·Vol. 63
·期 1
·371
·
IF 4.3
Ma Shuainan,Liu Qi,Han Wei,Liu Zhiyi,Jin Sinan,Wu He,Hua Wei
Intracerebral hemorrhage (ICH) incidence increases with age, and neuronal mitochondrial dysfunction and apoptosis post-ICH contribute to severe secondary brain injury. It is of paramount importance to explore molecular targets for protecting against brain injury after ICH. UBA52, a ubiquitin precursor protein, was found to be upregulated in brain tissues of ICH mice. Intracerebral injection of adeno-associated virus type 9 overexpressing UBA52 (AAV9-UBA52) alleviated neurological deficits and brain edema in ICH mice. In vitro and in vivo experiments demonstrated that UBA52 overexpression reduced hemin or ICH-induced apoptosis, reflected in decreased TUNEL-positive cells and reduced caspase-3 and caspase-9 levels. The augmentation of fluorescence intensity in Mitotracker labeling and the reduction of fluorescence intensity in JC-1 staining suggested that UBA52 overexpression mitigated hemin-induced mitochondrial damage. This was further evidenced by increased cellular ATP content and elevated cytochrome c levels located in mitochondria. In vivo findings showed that UBA52 overexpression reduced the quantity of degenerative neurons. UBA52 and NeuN co-localization verified its direct protective effect on neurons. IP-LC/MS and Co-IP assays identified Daxx as a UBA52-interacting protein, with UBA52 promoting Daxx ubiquitination and degradation. Rescue experiments showed Daxx overexpression abolished the protective effect of UBA52 against hemin-induced apoptosis and mitochondrial dysfunction. Collectively, this study demonstrated that UBA52 ameliorates ICH-induced secondary brain injury by promoting Daxx ubiquitination/degradation to inhibit neuronal apoptosis and mitochondrial damage, suggesting UBA52 as a potential protective target for ICH therapy.
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DOI
PubMed
高影响因子
CELLULOSE
·
2026
·
IF 4.8
Mo Yuhan,Hong Guolong,Chen Linbi,Yu Fangbing,Fei Mingen,Lin Huiping,Chen Ying,Li Ran,Yang Wenbin
Bamboo scrimber, as a sustainable engineered composite material, faces challenges in interfacial adhesion and mildew resistance due to the hydrophobic surface of bamboo bark/inner skin and its nutrient-rich composition (e.g., starch and other saccharides). Atmospheric plasma, through high-energy particles, can activate the bamboo surface by grafting oxygen-containing functional groups and inducing micro-roughness. This study proposes a novel strategy combining atmospheric plasma treatment with in situ zinc oxide nanoparticle deposition to simultaneously enhance interfacial bonding and anti-mold performance. The plasma-driven pyrolysis of zinc acetate precursor generates zinc oxide nanoparticles in situ, imparting mildew resistance to the material. Concurrently, this modification promotes deep penetration and uniform spreading of phenolic resin, forming a continuous bonding layer and mechanically interlocked "glue nail" structure at the bamboo-resin interface. The optimized composite exhibited a 13.7% increase in modulus of rupture (MOR), a 24.9% increase in modulus of elasticity (MOE), and a 107% increase in surface free energy. The inhibition rates against Aspergillus niger and Penicillium purpurogenum exceeded 90%, while the inhibition rate against Trichoderma viride reached 75%. This green and efficient one-step approach fully utilizes bamboo bark, significantly improving interfacial strength and mildew resistance, offering new insights for the interface engineering of natural fiber composites.
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高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 2
·50
·
IF 2.4
Cheng Hongna,Wang Chaoyong,Wang Zihan,Peng Weikang,Hou Jiayi,Tian Shiting,Shi Zixuan,Liu Ying,Li Fengfeng,Zhang Mingxi
The climate crisis caused by excessive carbon dioxide (CO 2 ) emissions urgently call for efficient electrocatalytic reduction technology to convert CO 2 into high value-added products. In this study, nickel polyphthalocyanine (NiPPc) electrocatalysts with different copper (Cu) doping amounts (10–90 wt%) were prepared by solvothermal method, Combining X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and other characterization and electrochemical testing, it is found that: Doping with 10 wt% Cu significantly enhanced catalytic activity, achieving a current density of 325 mA cm −2 at − 0.6 V (vs. RHE)—2.8 times that of the sample; 50 wt% Cu doping optimized the Cu–N 4 active sites, yielding a carbon monoxide (CO) Faraday efficiency of up to 95% at − 1.0 V; 30 wt% Cu-doped catalyst can generate CO: H 2 = 1:1 syngas, A controllable catalyst design strategy is provided for CO 2 electrocatalytic reduction. Graphical Influence of Cu Loading (10–90 wt%) on Electrocatalytic CO 2 Reduction Activity and CO Selectivity of NiPPc Catalysts.
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高影响因子
CHEMICAL PAPERS
·
2016
·Vol. 71
·期 3
·627-637
·
IF 1.326
Yan Liu-qing,Chen Yao,Sun Xiao-fu,You Mao-jun,Chen Xiao-dong,Gu Qiang,Zhang Yu-min
A solvent-free microwave-assisted four-component synthesis of 1,2,4,5 - tetrasubstituted imidazoles bearing a 4-aminophenyl substituent was studied by condensation of p -phenylenediamine, aryl diketone, benzaldehyde derivatives and ammonium acetate in the presence of solid support silica gel and catalyst Keggin-H 3 [PW 12 O 40 ]. The effects of four components molar ratio along with catalyst loading, irradiation time on the yields were investigated. Also, the structures of synthesized compounds were characterized by FT-IR, HRMS, 1 H NMR and 13 C NMR spectroscopy. Furthermore, their ultraviolet–visible maximum absorption, liquid fluorescence emission maximum and quantum yields were, respectively, measured in 0.05 M H 2 SO 4 aqueous solution and in dichloromethane. Simultaneously, solid fluorescence spectra were determined in the powder state. The relationships between the optical behavior and the polarity of the solvents for some compounds were assessed. The results showed that the fluorescence quantum efficiency was increased by introducing amino phenyl in comparison with benzyl on 1-position of trisubstitued imidazoles. The compounds synthesized were sensitive to the polarity of the solvents.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 54
·115543-115555
·
IF 5.8
Lei Dengke,Li Shulei,Gao Lihui,Hu Ming,Chai Na,Fan Jundi
The limited application of high-sulfur coal (HSC) and the increasing severity of copper pollution in solution are two pressing issues. To alleviate such issues, a sulfur self-doped coal-based adsorbent (HSC@ZnCl 2 ) was obtained by pyrolysis (850 °C, 60 min holding time) of HSC and ZnCl 2 with a mass ratio of 1:0.5. The results adsorption experiment revealed that the endothermic and spontaneous adsorption process was consistent with the Sips isothermal model ( R 2 = 0.992) and pseudo-second-order kinetic ( R 2 = 0.994), and that the adsorption process with a maximum adsorption capacity of 11.97 mg/g. Meanwhile, the adsorption of Cu 2+ onto HSC@ZnCl 2 was a result of the synergistic effects of various interactions, such as the complexation by oxygen-containing functional groups, electrostatic attraction and surface precipitation by ZnS on the adsorbent surface, and the process also included redox reaction. The findings of this work indicate that the preparation of sulfur self-doped coal-based adsorbent prepared from high-sulfur coal is a promising method for its large-scale utilization.
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高影响因子
COLLOID AND POLYMER SCIENCE
·
2015
·Vol. 293
·期 6
·1705-1712
·
IF 1.865
Liu Qin,Wen Xiufang,Xu Shouping,Pi Pihui,Cheng Jiang,Zeng Renchang
A series of cationic poly(hydroxyethyl methacrylate)- g -poly(carboxybetaine methacrylate ester) (PHEMA- g -PCBMAE) hydrogels (HCGs) were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. The HCGs were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and swelling behaviors. It was found that the HCG hydrogels showed enhanced mechanical strengths compared with PCBMAE hydrogel. In addition, it was observed that the cationic HCGs exhibited excellent antibacterial properties. We found that the equilibrium swelling ratios, mechanical properties, and drug release behaviors were related to the feed ratios of the gels. The tetracycline hydrochloride (TCHC) release results indicated that the drug released from HCGs could be prolonged by increasing the content of hydroxyethyl methacrylate (HEMA) in the gel networks.
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高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2015
·Vol. 124
·期 1
·447-453
·
IF 2.042
Li Wen-li,Zhou Cai-rong,Zhang Li
The specific heat capacity ( C
p ) of ivermectin (IVM) was measured by differential scanning calorimetry (DSC) and expressed as a function of temperature. Moreover, the standard molar combustion enthalpy of IVM was determined to be −26963.6 kJ mol −1 by XRY-1C calorimeter. The standard molar enthalpy of formation was calculated to be −862866.3 kJ mol −1 based on the standard molar combustion enthalpy. The thermodynamic basic data obtained are available for exploiting new synthesis methodology, engineering design and industry production of IVM.
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高影响因子
Food Analytical Methods
·
2013
·Vol. 7
·期 6
·1256-1262
·
IF 1.969
Zhou Nan,Sang Renhao,Zhu XiaShi
Functionalized β-cyclodextrin polymer, mono-6-deoxy-6-imidazole-β-cyclodextrin polymer (β-CDIMCP), was synthesized as a new solid phase adsorbent coupled with UV–visible spectroscopy to separate/analyze trace kaempferol. The results showed that kaempferol was adsorbed rapidly by β-CDIMCP (adsorption efficiency, 94.7 %) and then eluted by methanol (elution efficiency, 93.4 %). Under the optimum conditions, the calibration curve was linear in the concentration range from 0.10 to 14.0 μg/mL, with a correlation coefficient ( R ) of 0.9965. And the limit of detection was 0.028 μg/mL for kaempferol. The preconcentration factor of the method was tenfold. The molecular interaction between β-CDIMCP and kaempferol was studied through inclusion constant and FTIR analysis. The present method had been successfully applied to determine kaempferol in red wine samples.
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高影响因子
IONICS
·
2016
·Vol. 23
·期 4
·949-958
·
IF 2.119
Xiang Jingluan,Shen Chunhui,Gao Shanjun,Qian Wei
One kind of acid-base high temperature proton exchange membranes has been prepared from amino trimethylene phosphonic acid (ATMP), epoxycyclohexyethyltrimethoxysilane (EHTMS), and 3-aminopropyltriethoxysilane (APTES) by sol-gel process. The structural characteristics of these membranes with different amount of APTES were investigated by FT-IR, XRD, and SEM. These membranes showed excellent dimensional stability in water with the contribution of flexible ionic network structure and were thermally stable up to about 200 °C. In addition, the proton conductivity of the membranes increased with increasing temperature over the range of 20 to 140 °C, up to a maximum of 2.63 × 10 −2 S cm −1 at 140 °C under anhydrous condition. The high proton conductivity was attributed to the formation of hydrogen bond network through the synergistic effect of N and P. The activation energy value of membranes became lower from 0.46 to 0.30 eV because of the acid-base pairs. The variable-temperature FT-IR further proved the formation of hydrogen bond network in the membrane.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 10
·14092-14101
·
IF 2.478
Wang Kai,Wu Jie,Chen Gexiang,Qiao Hui,Zhou Yang,Li Jun,Qi Xiang
Molybdenum selenide (MoSe 2 ) has been extensively studied in recent years due to its strong absorption for sunlight and unique band structure. Herein, a self-assembly three-dimensional (3D) MoSe 2 nanoflowers were prepared by a two-step process. Significantly, the photodetection device based on MoSe 2 nanoflowers exhibited a maximum responsivity about 12.39 µA W −1 and a rapid photo-response time about 0.15 s at 0 V bias under simulated sunlight exposure benefiting from its large specific surface area and unique morphologic structure. Meanwhile, we demonstrated the outstanding stability after 2 weeks of the photodetection device. In this way, the MoSe 2 nanoflower-based photodetectors enriched the basic research of molybdenum selenide and provided some reference for the following researches based on molybdenum selenide.
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高影响因子
Biotechnology for Biofuels
·
2019
·Vol. 12
·期 1
·219
·
IF 5.452
Lin Zhangnan,Liu Hongjuan,Wu Jing,Patakova Petra,Branska Barbora,Zhang Jianan
Background Butanol production by fermentation has recently attracted increasingly more attention because of its mild reaction conditions and environmentally friendly properties. However, traditional feedstocks, such as corn, are food supplies for human beings and are expensive and not suitable for butanol production at a large scale. In this study, acetone, butanol, and ethanol (ABE) fermentation with non-pretreated cassava using a symbiotic TSH06 was investigated. Results In batch fermentation, the butanol concentration of 11.6 g/L was obtained with a productivity of 0.16 g/L/h, which was similar to that obtained from glucose system. A full utilization system of cassava was constructed to improve the fermentation performance, cassava flour was used as the substrate and cassava peel residue was used as the immobilization carrier. ABE fermentation with immobilized cells resulted in total ABE and butanol concentrations of 20 g/L and 13.3 g/L, which were 13.6% and 14.7% higher, respectively, than those of free cells. To further improve the solvent productivity, continuous fermentation was conducted with immobilized cells. In single-stage continuous fermentation, the concentrations of total ABE and butanol reached 9.3 g/L and 6.3 g/L with ABE and butanol productivities of 1.86 g/L/h and 1.26 g/L/h, respectively. In addition, both of the high product concentration and high solvent productivity were achieved in a three-stage continuous fermentation. The ABE productivity and concentration was 1.12 g/L/h and 16.8 g/L, respectively. Conclusions The results indicate that TSH06 could produce solvents from cassava effectively. This study shows that ABE fermentation with cassava as a substrate could be an efficient and economical method of butanol production.
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高影响因子
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