| 1. |
- Gao, Mingming, et al.
(författare)
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Engineered 2D MXene-based materials for advanced supercapacitors and micro-supercapacitors
- 2024
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Ingår i: Materials Today. - 1369-7021 .- 1873-4103. ; 72, s. 318-358
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Forskningsöversikt (refereegranskat)abstract
- The class of two-dimensional transition metal carbides/nitrides/oxycarbides (known as MXenes) has shown great potential in energy storage applications due to their intrinsic layered structure, outstanding electrical conductivity, tunable surface chemistry, and unique physicochemical properties. This review summarizes the latest progresses of MXene-based materials for supercapacitors and micro-supercapacitors. First, state-of-the-art structural engineering strategies for the construction of novel MXene-based electrodes are highlighted, as the electrochemical performance of MXenes is influenced by their structure, such as interlayer spacing and surface functional group density. Furthermore, the charge storage mechanisms of MXene-based electrodes in different electrolytes are discussed to stimulate further design and development of tailored materials for high-performance devices. Moreover, different device fabrication technologies are summarized and the achievements of specific device geometries (e.g., fiber-shape, planar-type, and three-dimensional devices) containing MXene-based materials are critically reviewed. Finally, perspectives and outlook for the development of high-performance MXene-based electrodes in terms of material engineering, performance improvement and device innovation are provided, clearly indicating research directions for next-generation advanced energy storage devices.
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| 2. |
- Han, Yanting, et al.
(författare)
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Green preparation of antibacterial shape memory foam based on bamboo cellulose nanofibril and waterborne polyurethane for adaptive relief of plantar pressure
- 2024
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Ingår i: International Journal of Biological Macromolecules. - : Elsevier BV. - 0141-8130 .- 1879-0003. ; 256
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Tidskriftsartikel (refereegranskat)abstract
- This study developed an aqueous solution blending and freeze-drying method to prepare an antibacterial shape memory foam (WPPU/CNF) based on waterborne PHMG-polyurethane and cellulose nanofibers derived from bamboo in response to the increasing demand for environmentally friendly, energy conserving, and multifunctional foams. The obtained WPPU/CNF composite foam has a highly porous network structure with well-dispersed CNFs forming hydrogen bonds with the WPPU matrix, which results in a stable and rigid cell skeleton with enhanced mechanical properties (80 KPa) and anti-abrasion ability. The presence of guanidine in the polyurethane chain endowed the WPPU/CNF composite foam with an instinctive and sustained antibacterial ability against Escherichia coli and Staphylococcus aureus. The WPPU/CNF composite foam exhibited a water-sensitive shape memory function in a cyclic shape memory program because of the chemomechanical adaptability of the hydrogen-bonded network of CNFs in the elastomer matrix. The shape-fixation ratio for local compression reached 95 %, and the shape-recovery rate reached 100 %. This allows the WPPU/CNF pad prototype to reversibly adjust the undulation height to adapt to plantar ulcers, which can reduce the local plantar pressure by 60 %. This study provides an environmentally friendly strategy for cellulose-based composite fabrication and enriches the design and application of intelligent foam devices.
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| 3. |
- Meng, Qinglai, et al.
(författare)
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Rapid personalized AMR diagnostics using two-dimensional antibiotic resistance profiling strategy employing a thermometric NDM-1 biosensor
- 2021
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Ingår i: Biosensors and Bioelectronics. - : Elsevier BV. - 0956-5663. ; 193
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Tidskriftsartikel (refereegranskat)abstract
- Antimicrobial resistance (AMR) threatens global public health and modern surgical medicine. Expression of β-lactamase genes is the major mechanism by which pathogens become antibiotic resistant. Pathogens expressing extended spectrum β-lactamases (ESBL) and carbapenemases (CP) are especially difficult to treat and are associated with increased hospitalization and mortality rates. Despite considerable effort, identification of ESBLs and CPs in a clinically relevant timeframe remains challenging. In this study, a two-dimensional AMR profiling assay strategy was developed employing panels of antibiotics (penicillins, cephamycins, oximino-cephalosporins and carbapenems) and β-lactamases inhibitors (avibactam and EDTA). The assay required the development of a novel biosensor that employed New Delhi metallo-β-lactamase-1 (NDM-1) as the sensing element. Functionally probing β-lactamase activity using substrates and inhibitors combinatorically increased the informational content that enabled the development of assays capable of simultaneous, differential identification of multiple β-lactamases expressed in a single bacterial isolate. More specifically, the assay enabled the simultaneous identification of ESBL and CP in mock samples, as well as in an engineered construct which co-expressed these β-lactamases. The NDM-1 biosensor assay was 16 times and 8 times more sensitive than the ESBL Nordmann/Dortet/Poirel (NDP) and Carba Nordmann/Poirel (NP) assays, respectively. In a retrospective study, NDM-1 biosensor assays were able to differentially identify ESBLs, metallo-CPs and serine-CPs β-lactamases in 23 clinical isolates with 100% accuracy. An assay algorithm was developed which accelerated data analytics reducing turnaround to <1 h. The assay strategy integrated with AI-based data analytics has the potential to provide physicians with a comprehensive readout of patient AMR status.
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| 4. |
- Obeso Duque, Aleksandra, et al.
(författare)
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A Qualitative Evaluation of Service Mesh-based Traffic Management for Mobile Edge Cloud
- 2022
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Ingår i: 22nd IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing, CCGrid 2022. - : IEEE. - 9781665499576 - 9781665499569 ; , s. 210-219
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Konferensbidrag (refereegranskat)abstract
- Service mesh is getting widely adopted as the cloud-native mechanism for traffic management in microservice-based applications, in particular for generic IT workloads hosted in more centralized cloud environments. Performance-demanding applications continue to drive the decentralization of modern application execution environments, as in the case of mobile edge cloud. This paper presents a systematic and qualitative analysis of state-of-the-art service mesh to evaluate how suitable its design is for addressing the traffic management needs of performance-demanding application workloads hosted in a mobile edge cloud environment. With this analysis, we argue that today's dependability-centric service mesh design fails at addressing the needs of the different types of emerging mobile edge cloud workloads and motivate further research in the directions of performance-efficient architectures, stronger QoS guarantees and higher complexity abstractions of cloud-native traffic manage-ment frameworks.
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| 5. |
- Obeso Duque, Aleksandra, et al.
(författare)
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Evaluating Service Mesh-based Traffic Management for Mobile Edge Cloud
- 2022
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Konferensbidrag (refereegranskat)abstract
- Service mesh is getting more widely adopted as the cloud-native mechanism for traffic management in microservice-based applications, in particular for generic IT workloads hosted in more centralized cloud environments. Performance-demanding applications continue to drive the decentralization of modern application execution environments as in the case of mobile edge cloud.This paper presents a systematic analysis of state-of-the-art service mesh to evaluate how suitable this approach is at addressing the traffic management needs of performance-demanding application workloads hosted in a mobile edge cloud environment. With this analysis, we argue that today’s dependability-centric service mesh fails at addressing the needs of the different types of emerging workloads in mobile edge cloud and motivate further research in the directions of performance-efficient architectures, stronger QoS guarantees and higher complexity abstractions of cloud-native traffic management frameworks.
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| 6. |
- Xu, Feng, et al.
(författare)
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Fractional Exhaled Nitric Oxide in Relation to Asthma, Allergic Rhinitis, and Atopic Dermatitis in Chinese Children
- 2011
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Ingår i: Journal of Asthma. - : Informa UK Limited. - 0277-0903 .- 1532-4303. ; 48:10, s. 1001-1006
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: Fractional exhaled nitric oxide (FeNO) is a non-invasive biomarker of airway inflammation. Our aim was to analyze the interrelationship and differentiate the predicting effects of asthma, allergic rhinitis (AR), and atopic dermatitis (AD) on the FeNO levels in children from mainland China. METHODS: A case-control study with age- and gender matched 1:1 was designed based on a larger cross-sectional survey on asthma, AR, and AD in Shanghai. A self-administered questionnaire was used to collect information on children's health information. Children with positive reports on physician-diagnosed asthma and/or AR and/or AD were recruited as cases, and children with no report of any of the diseases were designated as controls. The FeNO measurement was performed online, using the NIOX MINO® instrument (Aerocrine AB, Solna, Sweden) at 50 ml/min. RESULTS: A total of 130 subjects (65 cases and 65 controls, average age = 10 years) were recruited in this study. The average FeNO level was significantly higher in the cases (29.8 ± 1.9 ppb) than that in the controls (13.3 ± 1.7 ppb) (p < .001). Using multiple linear regression analysis controlling for confounding factors, including parental asthma/allergic diseases and home exposure, asthma (β = 0.330, p < .001) and AR (β = 0.157, p = .006) showed significant predicting effects for high FeNO levels, whereas AD was not related to the FeNO levels. CONCLUSIONS: Both asthma and AR could independently increase the FeNO levels in Chinese schoolchildren. Other diseases besides asthma should be considered when applying FeNO as a screening tool for asthma in Chinese children.
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| 7. |
- Xu, Feng, et al.
(författare)
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Residential Risk Factors for Atopic Dermatitis in 3-to 6-Year Old Children : A Cross-Sectional Study in Shanghai, China
- 2016
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 13:6
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Tidskriftsartikel (refereegranskat)abstract
- Background: Atopic dermatitis (AD) is common among pre-school children in Shanghai. This study aimed to identify the risk factors for childhood AD from the perspectives of home environment, demographics and parents-grandparents' atopic disease. Methods: A cross-sectional study was conducted in Shanghai in April-June, 2010. Preschool children's parents or guardians were invited to participate a questionnaire survey in six districts (two urban and four suburban/rural) and 6624 children were finally recruited (51.3% boys). AD diagnosis was based on the U.K. Working Party's (UKWP) criteria. Adjusted odds ratios (AOR) with 95% confidence intervals (95% CI) were calculated by multiple logistic regression. Results: A total of 8.5% of children ever had AD. Around 10.2% of the mothers had lived in newly renovated/decorated homes (NRDH) during the prenatal period (one year before or during pregnancy) and 9.5% got new home furniture (NHF) during the same period. AD was more common in children when mothers had lived in NRDH homes during the prenatal period (AOR = 1.41; 95% CI 1.03-1.93), the current home had indoor mold (2.00, 1.48-2.70), parents-grandparents' had atopic diseases (3.85, 3.05-4.87), the children had food allergy (3.40, 2.63-4.40) or children lived in urban area (1.52, 1.18-1.96). Associations between AD and NRDH, NHF and indoor molds were only significant in children without parents-grandparents' atopic diseases. There was an interaction effect between parents-grandparents' atopic diseases and NRDH (p < 0.05). Conclusions: Home renovation/redecoration, new furniture and indoor mold, urban residency, heredity disposition and food allergy can be risk factors for childhood AD in Shanghai.
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