Frontiers in Physiology
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2020
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IF 3.367
Gao Haiming,Dai Lulu,Fu Danyang,Sun Yaya,Chen Hui
The Chinese white pine beetle (Dendroctonus armandi) is undoubtedly one of the most important pests causing ecological damage in the Qinling Mountains. When bark beetles invade conifers, they must overcome host tree defenses, including primary resistance and induced resistance responses. Moreover, this induced resistance occurs following herbivory by bark beetles. Bark beetles have a corresponding defense mechanism for degrading toxic compounds, and glutathione S-transferases (GSTs) can catalyze the binding of endogenous substances that reduce glutathione (GSH) to various harmful electrophilic substrates, increasing their solubility and facilitating their excretion from cells. In this experiment, we successfully obtained sixteen full-length sequences of D. armandi, which belonged to four GST categories (delta, epsilon, sigma, and theta). The transcript levels of sixteen GSTs in D. armandi were compared at four developmental stages (larvae, pupae, teneral adults, and adults), three different tissues (antennae, gut, and reproductive organs), and under various levels of terpenoid stimuli during feeding on phloem tissue to evaluate the various relevant modes of action. This study aids in the understanding of the interaction between monoterpenes and beetles, and beetles’ detoxification through GSTs.
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JOURNAL OF MEMBRANE SCIENCE
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2021
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IF 8.742
Feixiang Gong,Zhitao Fan,Wenke Xia,Meng Zhang,Lei Wang,Xudong Wang,Xinbing Chen
To produce high-performance and durable membranes used in diffusion dialysis (DD) for acid recovery, poly(arylene ether sulfone)s containing different N-cyclic quaternary ammonium (QA) cations (CardoPES-C 2 -R(Cl - )) were prepared, and the relationships between the N-cyclic QAs and the properties of the corresponding membranes were explored. The CardoPES-C 2 -R(Cl - ) membranes exhibited ultrahigh H + /Fe 2+ selectivity in DD that was higher than that of a commercial DD membrane and other reported DD membranes. Most importantly, both the acid dialysis coefficient (U H+ ) and the H + /Fe 2+ selectivity of the CardoPES-C 2 -R(Cl - ) membranes can be readily adjusted by regulating the chemical structures of functional groups. Interestingly, because of the hydrogen bonds proven by 1 H NMR, the CardoPES-C 2 -Mor(Cl - ) membrane displayed a higher acid permeability coefficient than other N-cyclic QA cation-based membranes with identical ion exchange capacity (IEC) values, but showed lower Cl - conductivity. Additionally, the CardoPES-C 2 -R(Cl - ) membranes exhibited excellent chemical and operational stability after aging testing and consecutive operation.
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ACS Applied Materials & Interfaces
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2020
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IF 8.758
Xinan Shi,Yuxiang Wang,Hui Yu,Gang Wang,Lijian Huang,Daocheng Pan
The crystal quality of a Cu2ZnSn(S,Se)4 (CZTSSe) thin film is crucially important to a high-performance CZTSSe solar cell. After selenization, a bilayer CZTSSe thin film consisting of a large-grain top layer and a small-particle bottom layer is usually observed according to the literature. In this work, a facile air-annealing pretreatment is conducted for a Cu2ZnSnS4 precursor thin film prior to selenization, which can lead to sodium diffusion into the CZTS precursor thin film and surface oxidization of the CZTS thin film. Our experimental results revealed that the Na prediffusion and the surface oxidation of the CZTS precursor thin film can significantly promote the crystal growth of the CZTSSe thin film, which can completely remove the small-particle bottom layer and form a large-grain-spanned CZTSSe thin film. As a result, a photoelectric conversion efficiency of 9.80% was achieved by this method.
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SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Siqi Zhuo,Mingyue Xun,Mingda Li,Xiaoxue Kong,Rui Shao,Tiesong Zheng,Daodong Pan,Jianlin Li,Qianjin Li
S-layer protein (SLP) is a surface protein present in many bacteria and shows unique self-assemble ability for various applications, but its detection methods are very limited. In this paper, a label-free, highly selective and sensitive assay of SLP was developed by using the TiO 2 -coated porous silicon (PSi)-based microfluidic biosensor. The PSi-based biosensor could be easily prepared in a microfluidic device to build a microfluidic biosensing system for measuring SLP in samples rapidly. As the detection principle of the biosensor was based on the light reflection interference, so there was no labeling requirement. The specific recognition capability of the PSi-based biosensor was achieved by the non-covalently immobilized anti-SLP on the PSi surface. The developed biosensing system showed a rapid response time (5 min) and an excellent specificity to SLP, and displayed a broad detection linear range of 0.001 ∼ 10 μg/mL and a low detection limit of 3.2 ± 1.7 × 10 −5 μg/mL (0.70 ± 0.37 pM). The microfluidic biosensor can also be used for determination of the apparent dissociation constant ( K d ) between SLP and anti-SLP, which was measured to be 4.8 ± 0.9 × 10 -9 M.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Yongkun Liu,Guohua Jiang,Bo Yu,Uwamahoro Evariste,Pianpian Ma
Herein, the phosphorus-substituted nickel cobalt sulfides nanosheet arrays growth on nitrogen doped carbonic nanofibers (donated as Ni–Co–S–P) are prepared by an electrodeposition method. The morphologies and chemical composition of Ni–Co–S–P are investigated by SEM, TEM, XPS and EDS . The electrochemical properties of Ni–Co–S–P are tested by CV , GCD and EIS technologies. And the sample Ni–Co–S–P-4 displays the most outstanding electrochemical properties including electrocatalytic activity, rate capability and specific capacitance. In addition, the iron oxide nanosheets growth on N-CNFs (Fe–O/N-CNFs) are prepared by the same electrodepositing route. And they can serve as a negative electrode according to the electrochemical performances analysis. A hybrid supercapacitor based on the obtained electrodes is further assembled by using Fe–O/N-CNFs as negative electrode and Ni–Co–S–P as positive electrode. The as-fabricated hybrid supercapacitor show outstanding energy storage performance, it possesses a high energy density at 55.8 Wh·kg −1 corresponding to a power density at 402.9 W kg −1 .
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OPTICAL MATERIALS
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2020
·
IF 2.779
Ting Chen,Yanqiao Xu,Zhixiang Xie,Lianjun Wang,Weihui Jiang,Wan Jiang
I–III–VI quantum dots (QDs), as a new class of light-emitting materials, have aroused a great of attention for an impressive variety of applications. A facile one-pot approach was employed to synthesize highly luminescent Cu–In–Zn–S/ZnS (CIZS/ZnS) core/shell QDs. It was found that the CIZS/ZnS QDs prepared using sodium sulfide as sulfur source exhibited the strongest emission due to its highest chemical reactivity as compared to thiourea and thioacetamide. The combination of GSH content and pH value played a crucial role in the growth of ZnS shell, which was responsible for the bright emission of QDs. The surface defects of QDs could be effective passivated by GSH, which exhibited a significant improvement of emission intensity. The optimum pH value of 7 was also established due to the fact that the deprotonized sulfhydryl group of GSH molecule strongly coordinated with Zn 2+ at neutral pH value. Moreover, the particle size and composition of the CIZS/ZnS QDs can be well adjusted by tuning the n Zn / n CuInZn ratios. The maximum quantum yield (QY) of CIZS/ZnS QDs increased from 5.95% to 26.12%, accompanying by the improvement of the radiative decay rate from 1.90 × 10 5 to 5.64 × 10 5 s −1 . Furthermore, a blue LED-pumped white light-emitting diode (WLED) device was realized by combining yellow-orange CIZS/ZnS QDs with green Lu 3 Al 5 O 12 :Ce 3+ phosphor, achieving a luminous efficacy (LE) of 66.9 lm/W, and color rendering index (CRI) of 87.2, which demonstrated their great application potential in solid-state lighting field.
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CERAMICS INTERNATIONAL
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2020
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IF 3.83
Xiaogong Lv,Chengjun Zhu,Huimin Hao,Ruijian Liu,Yiming Wang,Junzhen Wang
In this work, Cu 2 ZnSn 1- x Ge x S 4 (CZTGS) precursor thin films with varied Ge composition ( x = 0, 0.2, 0.4, 0.6, 0.8, and 1) were prepared by using a water-based solution approach. After selenizing at 550 °C for 10 min in a graphite box containing selenium powder, the as-fabricated kesterite Cu 2 ZnSn 1- x Ge x (S,Se) 4 (CZTGSSe) thin films were systematically investigated for phase structure, morphology, valence states of elements, optical properties , and electrical properties. The results showed that the Ge element was successfully incorporated into the host lattice of Cu 2 ZnSn(S,Se) 4 (CZTSSe), and kesterite CZTGSSe films were formed. As the Ge content increased, the crystal grains in the films grew larger and showed uniform morphology on the sample surfaces. The band gap in the CZTGS(Se) thin films could be engineered in the range of 1.21 eV–2.00 eV by tuning the relative compositions of the Ge elements. Furthermore, it was confirmed that the doping of Ge improved the mobility, resistivity, and photoelectric performance of the films. Finally, the Cu 2 ZnSn 0.8 Ge 0.2 (S,Se) 4 solar cell device with an efficiency of 5.39% was prepared. The results indicate that non-toxic water solution-based CZTGSSe films showed potential for application in solar cells.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2020
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IF 4.192
Zi-Han Wei,Miao Liu,Chao Hu,Xue-Qing Yang
Analysis of the glutathione S-transferase (GST) gene expression in an insecticide-resistant strain of Cydia pomonella using real-time quantitative polymerase chain reaction is a key step toward more mechanism studies that require suitable reference genes with stable expression. Here, nine commonly used reference genes were selected, and their expression stabilities were analyzed. Results showed that EF-1α was the most stable reference gene in all of the experimental sets. The combinations of EF-1α and 18S, EF-1α and RPL12, and EF-1α and GAPDH were sufficient for normalization of gene expression analysis accurately in developmental stages, tissues, and larvae exposed to sublethal dose of λ-cyhalothrin, respectively. Additionally, the suitability of particular reference genes was verified by analyzing the spatiotemporal and insecticide-induced expression profiles of CpGSTe3, CpGSTd3, and CpGSTd4, which were overexpressed in a λ-cyhalothrin-resistant population from northeast China. These genes were used to confer the practicability of reference genes chosen in this study.
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MICROCHEMICAL JOURNAL
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2019
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IF 3.206
Zhixiong Hu,Xin-Yue Jiao,Li Xu
The green tea leaf residue was used as the carbon source to produce carbon dots (named as T-CDs) by combining pyrolyzation at high temperature and oxidation by concentrated H 2 SO 4 . Owing to the co-doping of S and N, T-CDs possessed high fluorescence quantum yield up to 14.8%. The fluorescence of the T-CDs was stable to the environmental pH, ionic strength and ultraviolet radiation, but sensitive to temperature with switchable intensity between 15 °C and 65 °C. The fluorescence of T-CDs was also found to be quenched by gefitinib via the inner-filter effect. Thus, T-CDs were used as the fluorescence sensor for gefitinib determination with good linearity in the range of 0.1 μg/mL to 20 μg/mL with satisfactory accuracy. The proposed T-CDs were obtained based on waste recycling of tea leaf residue for sustainability, and this strategy widened the applications of CDs.
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Inorganic Chemistry Frontiers
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2022
·Vol. 10
·期 2
·406-416
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IF 7.779
Zhenyuan Ji,Guanxiang Tang,Dongwei Ma,Lizhi Chen,Guoxing Zhu,Jun Zhu,Xiaoping Shen
Devising electrode materials with novel configurations and unique properties is a feasible strategy to boost the electrochemical properties of hybrid supercapacitors. This research demonstrates an effective two-step strategy to construct N,S co-doped porous carbon (NSC) sphere supported CoS nanoparticles with phosphate functionalization (P-NSC/CoS). Benefiting from the active multi-components, the electrochemical features of CoS can be remarkably modulated after the NSC and phosphate modifications. As the cathode material for the supercapacitor, the acquired P-NSC/CoS composite delivers a splendid capacity of 436.5 C g−1 at 1 A g−1 and a superb cycling property of 91.5% after 10 000 cycles at 10 A g−1 in 6 M KOH. Furthermore, the Fe2O3 nanocrystals with ultrafine size are in situ deposited on NSC via a solvothermal-calcination process. The NSC/Fe2O3 composite presents a sizeable capacitance of 433 F g−1 at 1 A g−1 with 100.6% capacitance retention after 10 000 cycles. More significantly, it is inspiring that the assembled P-NSC/CoS//NSC/Fe2O3 hybrid supercapacitor delivers an energy density of up to 64.3 W h kg−1 at 873.6 W kg−1 and a splendid cycling stability of 94.2% after 10 000 cycles at 5 A g−1 in 6 M KOH. The appreciable data demonstrate that the prepared advanced electrode materials and the hybrid supercapacitor display excellent application prospects in energy storage.
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CELLULAR SIGNALLING
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2023
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IF 4.8
Yunyun Li,Ruizhe Li,Hui Qin,Hongliu He,Shanshan Li
Ovarian tumor domain, ubiquitin aldehyde binding 1 (OTUB1), a deubiquitinating enzyme known to regulate the stability of downstream proteins, has been reported to regulate various cancers tumorigenesis, yet its direct effects on oral squamous cell carcinoma (OSCC) progression are unclear. Bioinformatics analysis was performed to screen for genes of interest, and in vitro and in vivo studies were carried out to investigate the function and mechanism of OTUB1 in OSCC. We found that OTUB1 was abnormally elevated in OSCC tissues and positively associated with the pathological stage and tumor stage. Knockdown of OTUB1 impaired the malignance of OSCC cells - suppressed cell proliferation, invasion, migration, and xenografted tumor growth. OTUB1 silencing also drove tumor-associated macrophage M1 polarization but suppressed M2 polarization, and the induction of M1 polarization inhibited the survival of OSCC cells. However, OTUB1 overexpression exerted the opposite effects. Furthermore, the protein network that interacted with the OTUB1 protein was constructed based on the GeneMANIA website. Receptor for activated C kinase 1 (RACK1), a facilitator of OSCC progression, was identified as a potential target of the OTUB1 protein. We revealed that OTUB1 positively regulated RACK1 expression and inhibited RACK1 ubiquitination. Additionally, RACK1 upregulation reversed the effects of OTUB1 knockdown on OSCC progression. Overall, we demonstrated that OTUB1 might regulate OSCC progression by maintaining the stability of the RACK1 protein. These findings highlight the potential roles of the OTUB1/RACK1 axis as a potential therapeutic target in OSCC.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xin Li,Tong Wu,Zhiqiang Jia,Tong Hao,Hong Zheng
A widely applicable Zn-DMTD-MOGs was prepared via direct construction strategy. • Zn-DMTD-MOGs shows great potential for trace heavy metals removal from real water. • DFT provides a local coordination cluster model for amorphous MOGs at atomic scale. • Synergistic chelating/monodentate coordination and LMCT enable efficient lead capture. Metal-organic gels (MOGs) have attracted extensive attention in the field of heavy metal removal, owing to their advantages including ease of surface modification, good stability, hierarchical pore structure, tunable functional groups, and mild and facile preparation conditions. However, the existing MOGs still leave considerable room for performance improvement. To produce MOGs with enhanced adsorption sites, high specific surface area, and greater pore volume, this study combined ultrasound-assisted nucleation with a high-concentration reaction strategy and triethylamine-mediated deprotonation, thereby enabling direct coordination between 2,5-Dimercapto-1,3,4-thiadiazole (DMTD) and Zn 2+ . Then, Zn-DMTD-MOGs material with higher-density N and S adsorption sites was successfully synthesized. The material exhibits a disordered particle-stacked amorphous structure with abundant mesopores (3–24 nm). Adsorption experiments demonstrate that the material achieves a trace Pb(II) removal efficiency of 96.98% within 10 s. The material achieves wide applicability over a low concentration range (≤ 42 mg/L) and a broad pH range (3.5–10.5), along with favorable stability, good reusability, and applicability to real water matrices. A local coordination cluster model was obtained through density functional theory (DFT) geometry optimization, and a synergistic chelating/monodentate coordination and ligand-to-metal charge transfer (LMCT) mechanism was established. The analysis reveals that the material adsorbs Pb(II) primarily through chelation at dual N/S sites and monodentate coordination at single S sites. This mechanism endows Zn-DMTD-MOGs with ultrafast adsorption kinetics and excellent cyclic stability, making them promising candidates for heavy metal remediation in drinking water sources. Download: Download high-res image (120KB) Download: Download full-size image
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