423 research outputs found
High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials
No full textThe development of flexible supercapacitors (FSCs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of high- temperature-tolerant FSCs (HT-FSCs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-FSCs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-FSCs are discussed, alongside strategies for elevating operational temperatures and performance. This review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-FSCs, further promoting their widespread adoption across diverse fields. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.S. Yu likes to acknowledge the financial supports from Fundamental Research Funds for the Central Universities of China(Grant No. SWU-KT22030) and Scientific and Technological Research Program of Chongqing Municipal Education Commission of China (No. KJQN202300205). N.Y. thanks the financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under the project of 457444676
RETRACTED ARTICLE: Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Shiqing Song, Faliang Lin, Pengyan Zhu, Changyan Wu, Shuling Zhao, Qiao Han & Xiaomei Li (2019) Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24. Artificial Cells, Nanomedicine, and Biotechnology, 47(1), 3994–4000, DOI: 10.1080/21691401.2019.1673767Since publication, concerns have been raised about the integrity of the data in the article. When approached for an explanation, the authors have been unable to verify their original data. We also have concerns regarding the integrity of the authorship, as one author has stated they did not consent to being listed as an author. We are therefore retracting this article and the corresponding author listed in this publication have been informed.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’
A formal model for Web Service Choreography Description Language (WS-CDL)
No full textWe propose a language CDL as a formal model of simplified WS-CDL The operational semantics of CDL is given, and static validation and verification of choreographies is studied. Some properties of the proposed model are verified using the SPIN model-checker which illustrates the potential usage and benefits of the formal model.Computer Science, Information SystemsTelecommunicationsEICPCI-S(ISTP)
Biography Writing Encourages Bilingual Adolescent’s Heritage Language Learning and Passing Down of Family Stories
No full textIt was a windy spring afternoon. My son, Michael, came back home sharing that he was given a writing project by his 7th-grade ELA teacher. He was asked to condut an interview with an adult adn then write a biograph yfor the intervivewee. How about your grandma? I suggested. He hesitated [...
Impacts of shale gas wastewater leaks on neighboring crops: Physiological and morphological responses of tomatoes
No full textAs shale gas extraction expands, the volume of flowback and produced water (FPW) from hydraulic fracturing increases, raising concerns about the potential ecological risks of leaks. In this work, we mixed tap water with different proportions of FPW to simulate various leak scenarios. Tomatoes were irrigated using these mixtures or using FPW treated with multi-stage pre-treatment and advanced membrane technologies to assess the effects on tomato seed germination, plant vigor, element accumulation, and fruit gene expression. Compared to tap water irrigation, all three dilution ratios of FPW inhibited seed germination and growth to varying degrees, significantly reduced tomato biomass and fruit yield, and caused the fruit to exceed safe limits for Pb and Cr. In the lowest dilution group, the germination rate was only 17 %, and total biomass decreased by 55 %. Even in the highest dilution group, fruit yield was 11 % lower than the control. Additionally, the dilution showed high salt accumulation toxicity, with yellowing at the edges of the leaves. Applying treated FPW accelerated tomato growth and increased the yield of tomato hairs, with total biomass rising by 38 %. Finally, a large number of differentially expressed genes were detected in the fruits irrigated with FPW. These genes are irelated to carbon and nitrogen metabolism, affecting the synthesis of carbohydrates and proteins. These findings provide insights into the risks associated with shale gas FPW leakage and offer guidance for the reuse of treated FPW
Boron-doped diamond decorated with metal-organic framework-derived compounds for high-voltage aqueous asymmetric supercapacitors
No full textConductive diamond has been recognized as a promising electrode material for supercapacitors due to its excellent stability and broad electrochemical potential window. To enhance the performance of diamond-based supercapacitors, this study focuses on two key strategies: incorporating redox-active species on the electrodes and/or in the electrolytes to increase the capacitance, and constructing asymmetric supercapacitors to expand the operating voltage range. In this context, pseudocapacitive Co3O4@boron doped diamond (BDD) and Bi-Bi2O3@BDD were synthesized using metal-organic framework (MOF) decorated BDD of Co-MOF@BDD and Bi-MOF@BDD as precursor materials, respectively. An aqueous asymmetric supercapacitor was then assembled using a pseudocapacitive electrode/redox electrolyte system of Co3O4@BDD | 3.0 M KOH+0.05 M K3Fe(CN)6/K4Fe(CN)6 as the positive compartment, and Bi-Bi2O3@BDD | 3.0 M KOH as the negative compartment. The resulting device demonstrated a wide operating voltage of 1.7 V, a maximal energy density of 10.0 Wh L-1 at a power density of 333.2 W L-1. The remarkable performance can be attributed to the Faradaic redox reactions involving [Fe(CN)6]3-/4-, Co3+/Co4+, Bi0/Bi2+/Bi3+ in the electrode materials and electrolytes. This work presents a novel way for fabricating aqueous supercapacitors with high voltage, high energy and power densities, offering significant potential for various energy storage applications
Anufrievia akazu
No full text2. Anufrievia akazu (Matsumura, 1932) n. rec. for China (Fig. 25b) Zygina akazu Matsumura, 1932: 108 Anufrievia akazu: Dworakowska 1970: 763, Fig. 18; Ohara, 2013: 244, Figs 1–2, 8–16 Anufrievia vilbastei Dworakowska, 1970: 763, Figs 12–17. syn. Material examined: 1♂ [NWAFU], CHINA: Sichuan Prov., Mt. Qingcheng, 14.ix.1988, coll. Zhou Jingruo, Zheng Shuling & Xu Qiuyuan. Distribution: China (Sichuan); Japan; Korea.Published as part of Cao, Yanghui, Yang, Meixia, Lin, Shuanghu & Zhang, Yalin, 2018, Review of the leafhopper genus Anufrievia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), pp. 203-232 in Zootaxa 4446 (2) on page 205, DOI: 10.11646/zootaxa.4446.2.2, http://zenodo.org/record/144409
Coaching Chinese Mothers to Ask Higher-Level Questions during Dialogic Reading
No full textThe purpose of this multiple baseline across participants study was to coach five Chinese bilingual mothers Higher-level questioning during dialogic reading. Based on Vygotsky’s (1978) social constructivist perspective, a real-time interactive coaching model was proposed to work with the mothers on a one-on-one format after they watched a dialogic reading video. By way of goal setting, modeling, collaborative reflection, practice on site, and immediate feedback, the researcher coached each mother on how to ask Higher-level questions in dialogic reading to best fit the zone of proximal development of the child. Data collection began in September 2018 and ended in February 2019 with 133 audio recordings of repeated readings. With a multiple baseline across participants design, the staggering introduction of the interventions of dialogic reading and coaching demonstrated the effect of coaching in increasing significantly the number of Higher-level questions asked by the mothers. The results in both within phase, between phases, and across participants supported the hypotheses of the study that (1) Dialogic reading increased conversational interactions and questioning during reading;(2) Coaching significantly increased the number of Higher-level questions asked by the mothers compared with dialogic reading with video training only. The results of study also found that the questioning during dialogic reading was affected by three components: Mother, Child, and Book triad, and the interactions between them
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