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  1. Article ; Online: Selective and efficient H2 evolution upon NH3BH3 hydrolysis at subzero temperatures

    Qing Zhang / Chen Fang / Yanlan Wang / Xiang Liu

    iScience, Vol 27, Iss 1, Pp 108774- (2024)

    2024  

    Abstract: Summary: In the winter months, the temperature in most of the Earth stays below 0°C; the average temperature in winter at the South Pole is about −60°C. Therefore, it is urgent to develop efficient catalytic systems for selective and efficient H2 ... ...

    Abstract Summary: In the winter months, the temperature in most of the Earth stays below 0°C; the average temperature in winter at the South Pole is about −60°C. Therefore, it is urgent to develop efficient catalytic systems for selective and efficient H2 evolution upon NH3BH3 hydrolysis at subzero temperatures. For solving the freezing issue of water at below 0°C, herein, we have employed a facile and surfactant-free approach to synthesize M-Pt/C nanocomposites (M = Pd, Rh, Ru, Ni, Cu, or Fe), by the alloying of commercial Pt/C with Pd, Rh, Ru, Cu, Ni, or Fe for selective and efficient H2 evolution upon NH3BH3 hydrolysis in saline solution at below 0°C, even at −15°C. In addition, NH3BH3 hydrolysis over Pd-Pt/C in the saturated NaCl solution is utilized not only for safe hydrogen production but also for its in situ hydrogenation reduction in organic chemistry, which could avoid using dangerous hydrogen cylinders.
    Keywords Electrochemistry ; Applied sciences ; Science ; Q
    Subject code 540
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Mechanistic insight into efficient H2 generation upon HCOONa hydrolysis

    Fuhua Xu / Jiaying Yan / Yanlan Wang / Xiang Liu

    iScience, Vol 26, Iss 4, Pp 106504- (2023)

    2023  

    Abstract: Summary: Sodium formate (SF) is regarded as a technological additive to improve H2 generation upon HCOOH dehydrogenation. The development of SF as a hydrogen storage material is still a challenge. Herein, we report the design and synthesis of carbon ... ...

    Abstract Summary: Sodium formate (SF) is regarded as a technological additive to improve H2 generation upon HCOOH dehydrogenation. The development of SF as a hydrogen storage material is still a challenge. Herein, we report the design and synthesis of carbon nanosphere-stabilized Pd nanoparticles (Pd/CNS) for the direct H2 generation upon SF hydrolysis in the presence of Fe3+. The tandem reaction, isotopic mass spectrometry, and gas chromatograms result confirmed that SF hydrolysis generates H2 with one H atom provided by SF and other H by H2O. The kinetic study and detailed mechanistic investigations have demonstrated that the concerted process between the cleavage of O-H bond in H2O and -O2C-H bond oxidative addition is the rate-controlling step in SF hydrolysis. This work offers a new chemical hydrogen storage material (HCOONa) for the high-efficiency generation, transport, and storage of H2.
    Keywords Chemical reaction ; Electrochemistry ; Science ; Q
    Subject code 540
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Integration of transcriptomic and proteomic analyses for finger millet [Eleusine coracana (L.) Gaertn.] in response to drought stress.

    Jiguang Li / Yanlan Wang / Liqun Wang / Jianyu Zhu / Jing Deng / Rui Tang / Guanghui Chen

    PLoS ONE, Vol 16, Iss 2, p e

    2021  Volume 0247181

    Abstract: Drought is one of the most significant abiotic stresses that affects the growth and productivity of crops worldwide. Finger millet [Eleusine coracana (L.) Gaertn.] is a C4 crop with high nutritional value and drought tolerance. However, the drought ... ...

    Abstract Drought is one of the most significant abiotic stresses that affects the growth and productivity of crops worldwide. Finger millet [Eleusine coracana (L.) Gaertn.] is a C4 crop with high nutritional value and drought tolerance. However, the drought stress tolerance genetic mechanism of finger millet is largely unknown. In this study, transcriptomic (RNA-seq) and proteomic (iTRAQ) technologies were combined to investigate the finger millet samples treated with drought at different stages to determine drought response mechanism. A total of 80,602 differentially expressed genes (DEGs) and 3,009 differentially expressed proteins (DEPs) were identified in the transcriptomic and proteomic levels, respectively. An integrated analysis, which combined transcriptome and proteome data, revealed the presence of 1,305 DEPs were matched with the corresponding DEGs (named associated DEGs-DEPs) when comparing the control to samples which were treated with 19 days of drought (N1-N2 comparison group), 1,093 DEGs-DEPs between control and samples which underwent rehydration treatment for 36 hours (N1-N3 comparison group) and 607 DEGs-DEPs between samples which were treated with drought for 19 days and samples which underwent rehydration treatment for 36 hours (N2-N3 comparison group). Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis identified 80 DEGs-DEPs in the N1-N2 comparison group, 49 DEGs-DEPs in the N1-N3 comparison group, and 59 DEGs-DEPs in the N2-N3 comparison group, which were associated with drought stress. The DEGs-DEPs which were drought tolerance-related were enriched in hydrolase activity, glycosyl bond formation, oxidoreductase activity, carbohydrate binding and biosynthesis of unsaturated fatty acids. Co-expression network analysis revealed two candidate DEGs-DEPs which were found to be centrally involved in drought stress response. These results suggested that the coordination of the DEGs-DEPs was essential to the enhanced drought tolerance response in the finger millet.
    Keywords Medicine ; R ; Science ; Q
    Subject code 630
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: The Effects of Urban Neighborhood Environmental Evaluation and Health Service Facilities on Residents’ Self-Rated Physical and Mental Health

    Jiangjun Wan / Yutong Zhao / Yun Chen / Yanlan Wang / Yi Su / Xueqian Song / Shaoyao Zhang / Chengyan Zhang / Wei Zhu / Jinxiu Yang

    International Journal of Environmental Research and Public Health, Vol 19, Iss 4501, p

    A Comparative and Empirical Survey

    2022  Volume 4501

    Abstract: 1) Background: The neighborhood environment has been shown to be an essential factor affecting residents’ quality of life and health, but the relationship between the characteristics of health service facilities and health levels is rarely known. (2) ... ...

    Abstract (1) Background: The neighborhood environment has been shown to be an essential factor affecting residents’ quality of life and health, but the relationship between the characteristics of health service facilities and health levels is rarely known. (2) Methods: This study used a representative sample ( n = 591, 303 women; 288 men, age 18–85 years, lived in Chengdu for an extensive time) of residents living in Chengdu City, China, and took spatial point data and empirical research data to construct an ordered logistic regression model. We contrastively analyzed the influence of different variables in the neighborhood environment and health service facilities on self-rated physical health (SRPH) and self-rated mental health (SRMH). (3) Results: The frequency of use and accessibility of multiple facilities in the health service facilities were significantly associated with self-rated health (SRH). Significant differences occurred between residents’ perceived accessibility and actual accessibility of facilities in SRH. Comparing the results of SRPH and SRMH revealed that the influencing factors that affect the two vary. The factors that significantly affect SRMH include neighborhood physical environment evaluation; social environmental evaluation; the frequency of use of the parks and squares, and sports zones; and the accessibility of parks and squares, specialized hospitals, community hospitals, and pharmacies. However, the factors that significantly affect SRPH include the frequency of use of sports venues, general hospitals, and pharmacies and the accessibility of general hospitals. The social environment of the neighborhood is also a non-negligible part, and its interaction with the physical environment of the neighborhood affects the outcome of SRH. (4) Conclusions: Neighborhood environmental characteristics and the layout of health service facilities have significant differential effects on people’s physical and psychological health, and this information is of great value in promoting healthy city development ...
    Keywords self-rated health ; neighborhood environment ; health service facilities ; Chengdu ; Medicine ; R
    Subject code 360
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Spatial-temporal differentiation pattern and influencing factors of high-quality development in counties

    Jiangjun Wan / Ziming Wang / Chunchi Ma / Yi Su / Tai Zhou / Tingting Wang / Yutong Zhao / Haiying Sun / Zhengrong Li / Yanlan Wang / Jia Li / Yuhui Ding / Xiaohong Tang

    Ecological Indicators, Vol 148, Iss , Pp 110132- (2023)

    A case of Sichuan, China

    2023  

    Abstract: High-quality development (HQD) is a development model proposed by the Chinese government in the regional development process, with the five major development concepts of innovation, green, coordination, openness and sharing as its core. It is an ... ...

    Abstract High-quality development (HQD) is a development model proposed by the Chinese government in the regional development process, with the five major development concepts of innovation, green, coordination, openness and sharing as its core. It is an expansion of sustainable development, incorporating the connotation of green development and emphasizing the joint promotion and coordinated development of the five subsystems. This study takes the counties in Sichuan, China, as the case area, constructs an evaluation index system based on the five development concepts, conducts research on the endogenous coordination of the HQD system through the Coupling Coordination Degree model. On this basis, its spatial–temporal differentiation characteristics are characterized by Getis-Ord Gi*, and the key influencing factors of the regional HQD are identified by Geographical Detector. The results indicated that the HQD coupling degree in Sichuan Province was in a highly coupling state, but the coupling coordination degree was at the primary coordination state, and the level of HQD was relatively low. Moreover, a spatial characteristic of “high east and low west” was showed in the HQD coupling coordination degree of Sichuan Province. Taking Chengdu City as the agglomeration center, it showed obvious agglomeration effect, and the HQD coupling coordination degree in the areas around Chengdu were significantly higher than in other areas. Furthermore, the permanent populations per unit area, the road mileage per capita, the number of employees and the proportion of fiscal expenditure to GDP had significant effects on HQD. The experience of the case area can be a reference for other similar regions globally to promote their high-quality economic and environmental development.
    Keywords High-quality development ; Coupling coordination degree model ; Geographic detector ; Spatial–temporal characteristics ; Driving factors ; Ecology ; QH540-549.5
    Subject code 910 ; 710
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: HspB5 correlates with poor prognosis in colorectal cancer and prompts epithelial-mesenchymal transition through ERK signaling.

    Qinghua Li / Yanlan Wang / Yuexing Lai / Ping Xu / Zhiwen Yang

    PLoS ONE, Vol 12, Iss 8, p e

    2017  Volume 0182588

    Abstract: Alpha B-crystallin (HspB5) is abnormally expressed in tumor tissues and portends a poor prognosis in cancer patients. However, the role of HspB5 in colorectal cancer (CRC) is still unclear. Seventy CRC patients and 40 healthy volunteers were sampled from ...

    Abstract Alpha B-crystallin (HspB5) is abnormally expressed in tumor tissues and portends a poor prognosis in cancer patients. However, the role of HspB5 in colorectal cancer (CRC) is still unclear. Seventy CRC patients and 40 healthy volunteers were sampled from August 2012 to March 2015 in order to determine the clinical significance of HspB5. In vitro cellular studies were used to validate its molecular mechanisms in CRC. Our clinical data indicated that HspB5 was up-regulated, and had a positive association with TNM stage CRC patients. The expression level of HspB5 in CRC patients was closely correlated with MMP7 and E-cadherin, two core epithelial-mesenchymal transition (EMT) gene products. The in vitro studies revealed that high HspB5 expression could prompt tumor cell proliferation and invasion, as well as EMT. Gene-microarray analysis suggested three significant signaling pathways (PI3K, p38 and ERK) were involved in HspB5-induced EMT. Signal transduction pathway inhibitors and HspB5 gene knockdown models suggested that HspB5 promotes CRC tumorigenesis and EMT progression through ERK signaling pathways. In summary, HspB5 maybe trigger the EMT in CRC by activating the ERK signaling pathway. It is a potential tumor biomarker for CRC diagnosis and prognosis.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2017-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: 18F-Trifluoromethylation of Unmodified Peptides with 5-18F-(Trifluoromethyl)dibenzothiophenium Trifluoromethanesulfonate

    Verhoog, Stefan / Benjamin G. Davis / Choon Wee Kee / Matthew Tredwell / Sean Smart / Tanatorn Khotavivattana / Thomas C. Wilson / Veerle Kersemans / Véronique Gouverneur / Yanlan Wang

    Journal of the American Chemical Society. 2018 Feb. 07, v. 140, no. 5

    2018  

    Abstract: The 18F-labeling of 5-(trifluoromethyl)-dibenzothiophenium trifluoromethanesulfonate, commonly referred to as the Umemoto reagent, has been accomplished applying a halogen exchange 18F-fluorination with 18F-fluoride, followed by oxidative cyclization ... ...

    Abstract The 18F-labeling of 5-(trifluoromethyl)-dibenzothiophenium trifluoromethanesulfonate, commonly referred to as the Umemoto reagent, has been accomplished applying a halogen exchange 18F-fluorination with 18F-fluoride, followed by oxidative cyclization with Oxone and trifluoromethanesulfonic anhydride. This new 18F-reagent allows for the direct chemoselective 18F-labeling of unmodified peptides at the thiol cysteine residue.
    Keywords anhydrides ; chemoselectivity ; cysteine ; halogens ; peptides ; thiols
    Language English
    Dates of publication 2018-0207
    Size p. 1572-1575.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.7b10227
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Effects of Intermittent Administration of Parathyroid Hormone (1-34) on Bone Differentiation in Stromal Precursor Antigen-1 Positive Human Periodontal Ligament Stem Cells

    Xiaoxiao Wang / Yanlan Wang / Xubin Dai / Tianyu Chen / Fanqiao Yang / Shuangye Dai / Qianmin Ou / Yan Wang / Xuefeng Lin

    Stem Cells International, Vol

    2016  Volume 2016

    Abstract: Periodontitis is the most common cause of tooth loss and bone destruction in adults worldwide. Human periodontal ligament stem cells (hPDLSCs) may represent promising new therapeutic biomaterials for tissue engineering applications. Stromal precursor ... ...

    Abstract Periodontitis is the most common cause of tooth loss and bone destruction in adults worldwide. Human periodontal ligament stem cells (hPDLSCs) may represent promising new therapeutic biomaterials for tissue engineering applications. Stromal precursor antigen-1 (STRO-1) has been shown to have roles in adherence, proliferation, and multipotency. Parathyroid hormone (PTH) has been shown to enhance proliferation in osteoblasts. Therefore, in this study, we aimed to compare the functions of STRO-1(+) and STRO-1(−) hPDLSCs and to investigate the effects of PTH on the osteogenic capacity of STRO-1(+) hPDLSCs in order to evaluate their potential applications in the treatment of periodontitis. Our data showed that STRO-1(+) hPDLSCs expressed higher levels of the PTH-1 receptor (PTH1R) than STRO-1(−) hPDLSCs. In addition, intermittent PTH treatment enhanced the expression of PTH1R and osteogenesis-related genes in STRO-1(+) hPDLSCs. PTH-treated cells also exhibited increased alkaline phosphatase activity and mineralization ability. Therefore, STRO-1(+) hPDLSCs represented a more promising cell resource for biomaterials and tissue engineering applications. Intermittent PTH treatment improved the capacity for STRO-1(+) hPDLSCs to repair damaged tissue and ameliorate the symptoms of periodontitis.
    Keywords Internal medicine ; RC31-1245
    Subject code 616
    Language English
    Publishing date 2016-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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