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Role of amino acids in flavor profiles and foam characteristics of sparkling wines during aging

JOURNAL OF FOOD COMPOSITION AND ANALYSIS 2024年 126卷

作者： Sun, Na zhao, Lili Liu, Aiguo Su, Long Shi, Kan zhao, Hongyu Liu, shuwen Northwest A&F Univ Coll Enol Xinong Rd 22 Yangling 712100 Shaanxi Peoples R China Domaine Chandon Ningxia Moet Hennessy Co Ltd Xia Tong Rd 1 Yinchuan 751100 Ningxia Peoples R China Northwest A&F Univ Coll Enol Xianyang Peoples R China

As sparkling wine ages, a well-balanced amino acid composition can enrich its flavor profiles and achieve an optimal state for foam characteristics. This study aimed to determine the influence of amino acids on the flavor profiles and foam characteristics of white and rose ' sparkling wine. The concentrations of amino acids and aroma compounds were determined via liquid chromatography-mass spectrometry (LC-MS) and gas chromatographymass spectrometry (GC-MS), respectively. Correlation analysis and multiple linear regression (MLR) models were employed for further analysis. It revealed that the content of amino acids (except for proline) in both sparkling wines decreased with aging (11-23%). Ethyl octanoate had the largest odor activity value (OAV) value in both wines, but its content decreased with aging. The foam parameters of both sparkling wines decreased with increased aging duration, leading to changes in effervescence-related taste traits. Correlation analysis showed that most amino acids positively correlated with ethyl octanoate and foam characteristics, whereas the foam parameters did not increase along with the protein concentrations. Furthermore, the MLR analysis emphasized that amino acids had a greater impact on foam characteristics than volatiles. This study provides guidance for the production of high-quality sparkling wines.

关键词： Amino acids Volatile aroma compounds Total protein Foam characteristics Correlation analysis MLR Sensory analysis Sparkling wine

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Recent advances in the interfacial engineering of MOF-based mixed matrix membranes for gas separation

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NANOSCALE 2024年第16期16卷 7716-7733页

作者： Yu, shuwen Li, Conger zhao, Shuke Chai, Milton Hou, Jingwei Lin, Rijia Suzhou Univ Sch Chem & Chem Engn Suzhou 234000 Peoples R China Univ Queensland Sch Chem Engn St Lucia Qld 4072 Australia Shanghai Tech Univ Sch Phys Sci & Technol Shanghai 201210 Peoples R China

The membrane process stands as a promising and transformative technology for efficient gas separation due to its high energy efficiency, operational simplicity, low environmental impact, and easy up-and-down scaling. Metal-organic framework (MOF)-polymer mixed matrix membranes (MMMs) combine MOFs' superior gas-separation performance with polymers' processing versatility, offering the opportunity to address the limitations of pure polymer or inorganic membranes for large-scale integration. However, the incompatibility between the rigid MOFs and flexible polymer chains poses a challenge in MOF MMM fabrication, which can cause issues such as MOF agglomeration, sedimentation, and interfacial defects, substantially weakening membrane separation efficiency and mechanical properties, particularly gas separation. This review focuses on engineering MMMs' interfaces, detailing recent strategies for reducing interfacial defects, improving MOF dispersion, and enhancing MOF loading. Advanced characterisation techniques for understanding membrane properties, specifically the MOF-polymer interface, are outlined. Lastly, it explores the remaining challenges in MMM research and outlines potential future research directions. This is a comprehensive review for resolving compatibility challenges in fabricating practical metal-organic framework composite membranes for gas separation.

关键词： Defects

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An analytical framework based on social-ecological systems for identifying priority areas for ecological restoration in coastal regions

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JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024年 370卷 122958页

作者： Hong, Wuyang zhao, Yingmei Yang, shuwen Yang, Xiaochun Li, Yelin Wang, Chunxiao Shenzhen Univ Sch Architecture & Urban Planning Shenzhen 518000 Peoples R China Shenzhen Univ State Key Lab Subtrop Bldg & Urban Sci Shenzhen 518000 Peoples R China

Owing to rapid urbanization, coastal regions worldwide are experiencing immense resource and environmental stress. Ecological restoration is vital for maintaining and sustainably developing coastal regions. This study proposed a method for delineating priority areas for ecological restoration based on the social-ecological systems (SES) theory. First, an analytical model was established based on three dimensions: ecosystem function, social system pressure, and SES evolution, for analyzing the social and natural systems of coastal regions. Second, based on the modes of land-sea interaction relevant to ecological restoration, auxiliary marine factors were incorporated to aid the delineation of priority areas for ecological restoration. A case study was conducted on the Dapeng New District of Shenzhen City to validate our method. The marine areas of the Dapeng New District have significantly poorer ecosystem function than its terrestrial areas because of the natural geography of this area and human activities. A total of 43.4% of marine areas require artificially assisted ecological restoration, and inland areas 1.5 km from the shoreline are significant for ecological conservation and restoration. Additionally, estuaries and artificial shorelines should be the focus of ecological restoration work in the study area. This case study proved the efficacy of our method. The findings will serve as a reference for the planning and implementation of ecological restoration plans in coastal regions.

关键词： Coastal regions Social-ecological systems Ecological restoration Land-sea coordination Shenzhen city

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Enhanced Coloration/Bleaching Photochromic Performance of WO3 Based on PVP/PU Composite Matrix

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CHEMISTRYSELECT 2019年第33期4卷 9817-9821页

作者： Li, Rong Zhou, Yijie Shao, Zewei zhao, shuwen Chang, Tianci Huang, Aibing Li, Ning Ji, Shidong Jin, Ping Shanghai Inst Ceram State Key Lab High Performance Ceram & Superfine Dingxi 1295 Shanghai 200050 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China China Univ Petr Coll New Energy & Mat Dept Mat Sci & Engn Beijing Peoples R China

Photochromic WO3 based smart window owns special advantages such as simple construction, automatic modulation and great solar regulation, so it can be used to reduce the energy consumption of building industry. In this paper, we studied the relationship between WO3 and the composite matrix composed of different proportions of polyurethane (PU) and polyvinyl pyrrolidone (PVP). Fourier-transform infrared spectra and Raman spectra has demonstrated a strong interaction between WO3 and PVP, leading to a high regulation efficiency of WO3 in PVP. While in pure PU, the nonbonding between WO3 and PU leads to a faster bleaching speed. By tuning the proportion of PU and PVP in the matrix, WO3-based hybrid photochromic foil was obtained with rapid coloration (< 5 min), fast bleaching behavior (< 3 hours at room temperature or < 1 hour at 60 degrees C), and exhibited good cycling stability. This study proposes a simple strategy for widespread application of WO3-based photochromic smart window.

关键词： Amorphous surface Organic-inorganic matrix Photochromic foil Smart window WO3 nanoparticles

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Mechanistic and Kinetic Consideration of the Photochemically Generated Oxidative Organic Radicals in Dissolved Black Carbon Solutions under Simulated Solar Irradiation

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ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023年第1期58卷 760-770页

作者： Jiang, Hongyu zhao, Mengzhe Hong, Wenjie Song, Weihua Yan, shuwen Fudan Univ Dept Environm Sci & Engn Shanghai 200438 Peoples R China Shanghai Inst Pollut Control & Ecol Secur Shanghai 200092 Peoples R China

The photochemically generated oxidative organic radicals (POORs) in dissolved black carbon (DBC) was investigated and compared with that in dissolved organic matter (DOM). POORs generated in DBC solutions exhibited higher one-electron reduction potential values (1.38-1.56 V) than those in DOM solutions (1.22-1.38 V). We found that the photogeneration of POORs from DBC is enhanced with dissolved oxygen (DO) increasing, while the inhibition of POORs is observed in reference to DOM solution. The behavior of the one-electron reducing species (DBC center dot -/DOM center dot -) was employed to explain this phenomenon. The experimental results revealed that the DO concentration had a greater effect on DBC center dot - than on DOM center dot -. Low DO levels led to a substantial increase in the steady-state concentration of DBC center dot -, which quenched the POORs via back-electron reactions. Moreover, the contribution of POORs to the degradation of 19 emerging organic contaminants (EOCs) in sunlight-exposed DBC and DOM solutions was estimated. The findings indicate that POORs play an important role in the photodegradation of EOCs previously known to react with triplets, especially in DBC solutions. Compared to DOM solutions, POOR exhibits a lower but considerable contribution to EOC attenuation. This study enhances the understanding of pollutant fate in aquatic environments by highlighting the role of DBC in photochemical pollutant degradation and providing insights into pollutant transformation mechanisms involving POORs.

关键词： dissolved black carbon oxidative organic radicals one-electron reduction potential one-electron reducingspecies back-electron transfer

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Palladium nanocrystals coupled with quasi-cuboid ceria embedded nitrogen-doped graphene aerogel boosts ethanol electrocatalytic oxidation

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2025年 106卷 16-22页

作者： Ma, Sizhuo zhao, Jinjuan Zhang, Hui Li, Mengjie Wu, Jie Liu, Zheng Yang, Honglei zhao, Limin Li, shuwen Lanzhou Univ Coll Chem & Chem Engn State Key Lab Appl Organ Chem SKLAOC Lanzhou 730000 Peoples R China Chifeng Univ Coll Chem & Life Sci Chifeng 024000 Peoples R China

Metal oxides can significantly enhance catalytic performance as assistants due to the synergistic and interface effects. Therefore, a highly effective and long-lasting anode electrocatalyst for the ethanol oxidation reaction (EOR) can be designed through appropriate coupling of metallic oxides. In this work, a catalyst with quasi-cuboid ceria particles anchored Pd nanocrystals (NCs) embedded in nitrogen-doped graphene (NG) aerogels was synthesized (Pd/CeO2-x@NG) through a simple template-free hydrothermal and wet chemical reduction method without the use of surfactants. As an electrocatalyst for alkaline EOR, Pd/CeO2-x@NG (1264.0 mA mg- 1;5.04 mA cm- 2) demonstrates superior performance to commercial Pd/C (430.2 mA mg-1;2.79 mA cm- 2) in terms of mass/specific activity, durability and stability. The mutual transformation between Ce3+ and Ce4+ in ceria not only generates numerous oxygen vacancies and enhances active oxygen adsorption like OH but also accelerates electron transfer from ceria to Pd, leading to a downward shift in the d-band center of Pd. Furthermore, NG's plentiful N-containing functional groups offer more active sites for Pd NCs. This work not only designed a catalyst with better activity stability and durability than commercial Pd/C in alkaline EOR, but also presents a feasible strategy for using metal oxides as assistants to develop efficient and durable EOR electrocatalysts.

关键词： Ethanol oxidation reaction Nitrogen-doped graphene aerogels Pd nanocrystals Quasi-cuboid ceria

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Genomic Characterization and Antimicrobial Resistance of ESBL-Producing, Escherichia coli Isolates in Suzhou, China

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INFECTION AND DRUG RESISTANCE 2025年 18卷 1049-1057页

作者： Wang, Cailin Zhang, Hong zhao, Rongfen Tsui, Clement Kin-Ming Deng, shuwen Peoples Hosp Suzhou New Dist Med Res Ctr Suzhou Jiangsu Peoples R China Peoples Hosp Suzhou New Dist Dept Med Microbiol Suzhou Jiangsu Peoples R China Tan Tock Seng Hosp Natl Ctr Infect Dis Infect Dis Res Lab Singapore Singapore Nanyang Technol Univ Lee Kong Chian Sch Med Singapore Singapore Univ British Columbia Fac Med Vancouver BC V6T1Z3 Canada

Background: The prevalence of third-generation cephalosporin-resistant and extended-spectrum beta-lactamases (ESBL) producing Escherichia coli poses a significant global public health concern due to their resistance to multiple antibiotics;however, their prevalence and epidemiological patterns in China are not very well investigated. Objective: This study aimed to investigate the molecular epidemiology, and antimicrobial susceptibility of ESBL-producing E. coli among clinical isolates in China. Methods: Phenotypic ESBL-producing E. coli isolates were collected from in-patients at a non-tertiary hospital in Suzhou from 2018.06.01 -2019.11.30. All isolates were identified and analyzed by conventional microbiological methods, and antimicrobial susceptibility testing was determined. Genes associated with resistance to beta-lactamases, fluoroquinolone, aminoglycosides, sulfonamides, sequence types (STs), and genetic relationship were characterized through whole-genome sequencing (WGS) data. Results: Eighty-six isolates were collected and sequenced, and genomic analysis identified twenty-five different sequence types (STs). The most prevalent STs were ST131 (n=22, 25.6%), ST1193 (n=16, 18.6%), ST38 (n=9, 10.5%) and ST167 (n=6, 7.0%). blaCTX-M genotypes were the most dominant, comprising a variety of subtypes (eg, blaCTX-M-14, blaCTX-M-15, blaCTX-M-27, blaCTX-M-55) and blaTEM-type among ESBL-producing E. coli in our study. All cases of co-carriage of beta-lactamase genes showed a strong link to amoxicillin/sulbactam resistance, while the co-carriage of blaCTX-M-15/TEM-1B or blaCTX-M-15/OXA-1 were strongly linked to resistance against cefepime, ceftazidime, and aztreonam. In addition, genes associated with resistance to fluoroquinolone, aminoglycosides, and sulfonamides were also detected. Conclusion: Our findings highlighted the prevalence of globally circulating ESBL-producing E. coli clones, such as ST131 and ST1193, in Suzhou, China. These clones and sublineages are als

关键词： antimicrobial resistance Escherichia coli extended spectrum beta -lactamase whole-genome sequencing

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Intelligent Sedimentary Lithofacies Identification With Integrated Well Logging Features

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IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 2024年 21卷 1-5页

作者： Guo, shuwen Yang, Naxia Guo, Chunxiang zhao, Dongfeng Li, Hao Li, Guofa PetroChina Res Inst Explorat & Dev Dagang Oilfield Tianjin 300280 Peoples R China China Univ Petr State Key Lab Petr Resources & Prospecting CNPC Key Lab Geophys Explorat Beijing 102249 Peoples R China Univ Elect Sci & Technol China Yangtze Delta Reg Inst Huzhou Huzhou 313001 Peoples R China

Lithology identification is the research basis in oil and gas reservoir exploration and is critical for the formation characterization and reservoir development. Traditional lithofacies identification methods rely on the knowledge and experience of geologists and are usually done manually. With the development of deep learning technology and its application in the field of geophysics, lithofacies identification based on deep-learning approach has attracted great attention in recent years. Well logging data have obvious sequence characteristics. Therefore, we propose to use a bidirectional long and short-term memory (BiLSTM) neural network to learn long-term information for more effective lithology facies classification. In addition, we also perform correlation analysis on the input well logging curves and conduct median filter at different scales according to the correlation degree to extract the geological features within data itself and discard the interference of noise. The raw data-based lithofacies identification can reflect the noise resistance of the neural network model to some extent, while the filtered data are more beneficial for the model to extract the geological features correlated with lithofacies and provide accurate classification results. We validate our proposed framework by applying it to a case study from the Council Grove gas reservoir located in Kansas. Furthermore, we compare the effect of input data and network model on the identification results. The experimental results show that the proposed lithofacies identification method has higher classification accuracy.

关键词： Bidirectional long short-term memory (BiLSTM) network correlation analysis geological features lithology identification sequence data

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Nitrogen-doped carbon nanotubes embedded with nitrogen-doped carbon black anchoring Pd nanocrystals to boost ethanol electrooxidation

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GREEN CHEMISTRY 2023年第23期25卷 10033-10042页

作者： Li, shuwen Wu, Li zhao, Jinjuan Li, Ruxia Yang, Honglei zhao, Limin Jin, Ruifa Lanzhou Univ Coll Chem & Chem Engn State Key Lab Appl Organ Chem SKLAOC Lanzhou 730000 Peoples R China Chifeng Univ Coll Chem & Life Sci Inner Mongolia Key Lab Photoelect Funct Mat Chifeng 024000 Peoples R China

Seeking and engineering superior supporting materials is a powerful strategy to rationally design electrocatalysts with both high activity and robust durability towards ethanol oxidation reaction (EOR). Accordingly, herein, nitrogen-doped carbon nanotubes embedded with nitrogen-doped carbon black (NCB@NCNTs) anchoring surface-clean Pd nanocrystals (Pd/NCB@NCNTs), possessing a prominent three-dimensional network structure and adequate nitrogen-containing functional groups, were fabricated through a mild hydrothermal process followed by a surfactant-free chemical reduction. Oxidized carbon nanotubes (OCNTs), oxidized carbon black (OCB) and ethylenediamine (EDA) were used as precursors to acquire NCB@NCNTs. EDA not only serves as a nitrogen source to realize nitrogen doping but also acts as an important structural modifier to construct the firm cross-linked three-dimensional network structures through the strong hydrogen bonds. The obtained Pd/NCB@NCNTs exhibit exceptionally improved electrocatalytic activity, fast kinetics and robust durability as well as stability compared with the commercial Pd/C towards the EOR, due to the prominent roles of NCB@NCNTs with a unique three-dimensional network architecture and abundant nitrogen-containing functional groups. Specifically, the electrocatalytic EOR properties of Pd/NCB@NCNTs-2 with an optimal OCB/OCNT mass ratio of 1/4 is optimal among all prepared electrocatalysts and commercial Pd/C. This work presents a new design of a carbon-based material to fabricate highly active and durable catalysts for fuel cells and beyond. N-doped CNTs embedded with N-doped carbon black anchoring surface-clean Pd NCs exhibit exceptionally improved electrocatalytic behavior towards EOR, due to their unique 3D network architecture and abundant N-containing functional groups.

关键词： Carbon nanotubes

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The condition of women frequently changing sanitary pads in 28 cities of China: a cross-sectional study

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REPRODUCTIVE HEALTH 2024年第1期21卷 170页

作者： Sun, Jiachen Bai, shuwen Li, Qi zhao, Meizhen Ge, Lina Zang, Shuang China Med Univ Clin Coll 1 77 Puhe Rd Shenyang 110122 Liaoning Provin Peoples R China Univ Macau Fac Hlth Sci Dept Publ Hlth & Med Adm Ave Univ Taipa Macau Peoples R China Guangzhou Univ Chinese Med Clin Med Coll 5 60 Hengfu Rd Guangzhou 510095 Guangdong Provi Peoples R China Huazhong Univ Sci & Technol Tongji Hosp Tongji Med Coll Dept Nursing 1095 Jiefang Ave Wuhan 430030 Hubei Province Peoples R China China Med Univ Shengjing Hosp Dept Obstet & Gynecol 36 Sanhao St Shenyang 110022 Liaoning Provin Peoples R China China Med Univ Sch Nursing Dept Community Nursing 77 Puhe Rd Shenyang 110122 Liaoning Provin Peoples R China

ObjectivesThis study aims to fill the gap in understanding the frequency of changing sanitary pads and the key factors associated with this practice among women in China. MethodsUsing a convenient sampling approach, a cross-sectional study was conducted with a quota sampling method to survey women from 28 cities in China between October 21 and 31, 2020. Basic demographic characteristics, personal hygiene habits, self-efficacy, health-related quality of life, and disease status were collected. Multiple logistic regression model was used to analyze the factors associated with the frequency of changing sanitary pads. ResultsA total of 1682 respondents were included in this study. The condition of frequently changing sanitary pads was divided into three groups: "Not taken" (224 respondents, 13.32%), "Short-term taken" (330 respondents, 19.62%), and "Long-term taken" (1128 respondents, 67.06%). Multiple logistic analysis revealed that women who performed "long-term taken" cleaning up rubbish timely (OR = 22.89, P < 0.05), "long-term taken" regular breast self-examination (OR = 19.46, P < 0.05), "long-term taken" actively obtaining scientific contraception methods (OR = 7.40, P < 0.05), as well as those with higher health-related quality of life (OR = 33.72, P < 0.05), were more likely to perform "long-term taken" frequently changing sanitary pads. Conversely, women with chronic diseases (OR = 0.48, P < 0.05) and those aged 31-40 (OR = 0.44, P < 0.05) were less likely to perform the "long-term taken" frequently changing sanitary pads during menstruation. ConclusionsMost Chinese women practice good menstrual health management and frequently change their sanitary pads. However, there are still some women whose sanitary pad changing practices fall short of expectations. Multiple factors have been found to be associated with the frequency of changing sanitary pads. Based on the research results, healthcare institutions, schools, and the government can more effectively screen,

关键词： Changing sanitary pads Menstrual hygiene Menstruation Cross-sectional study China

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