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  • 1
    Online Resource
    Online Resource
    Design of Quasi‐MOF Nanospheres as a Dynamic Electrocatalyst toward Accelerated Sulfur Reduction Reaction for High‐Performance Lithium–Sulfur Batteries
    Wiley ; 2022
    In:  Advanced Materials Vol. 34, No. 2 ( 2022-01)
    Details
    In: Advanced Materials, Wiley, Vol. 34, No. 2 ( 2022-01)
    Abstract: Lithium–sulfur (Li–S) batteries are considered as one of the most promising next‐generation rechargeable batteries owing to their high energy density and cost‐effectiveness. However, the sluggish kinetics of the sulfur reduction reaction process, which is so far insufficiently explored, still impedes its practical application. Metal–organic frameworks (MOFs) are widely investigated as a sulfur immobilizer, but the interactions and catalytic activity of lithium polysulfides (LiPs) on metal nodes are weak due to the presence of organic ligands. Herein, a strategy to design quasi‐MOF nanospheres, which contain a transition‐state structure between the MOF and the metal oxide via controlled ligand exchange strategy, to serve as sulfur electrocatalyst, is presented. The quasi‐MOF not only inherits the porous structure of the MOF, but also exposes abundant metal nodes to act as active sites, rendering strong LiPs absorbability. The reversible deligandation/ligandation of the quasi‐MOF and its impact on the durability of the catalyst over the course of the electrochemical process is acknowledged, which confers a remarkable catalytic activity. Attributed to these structural advantages, the quasi‐MOF delivers a decent discharge capacity and low capacity‐fading rate over long‐term cycling. This work not only offers insight into the rational design of quasi‐MOF‐based composites but also provides guidance for application in Li–S batteries.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v34.2
    DOI: 10.1002/adma.202105541
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 1474949-X
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  • 2
    Online Resource
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    Effectiveness of Inactivated COVID-19 Vaccines against COVID-19 Caused by the SARS-CoV-2 Delta and Omicron Variants: A Retrospective Cohort Study
    MDPI AG ; 2022
    In:  Vaccines Vol. 10, No. 10 ( 2022-10-19), p. 1753-
    Details
    In: Vaccines, MDPI AG, Vol. 10, No. 10 ( 2022-10-19), p. 1753-
    Abstract: Background: Real-world evidence on the effectiveness of inactivated vaccines against the Delta and Omicron (BA.2.38) variants remains scarce. Methods: A retrospective cohort study was conducted to estimate the adjusted vaccine effectiveness (aVE) of one, two, and three doses of inactivated vaccines in attenuating pneumonia, severe COVID-19, and the duration of viral shedding in Delta and Omicron cases using modified Poisson and linear regression as appropriate. Results: A total of 561 COVID-19 cases were included (59.2% Delta and 40.8% Omicron). In total, 56.4% (184) of Delta and 12.0% (27) of Omicron cases had COVID-19 pneumonia. In the two-dose vaccinated population, 1.4% of Delta and 89.1% of Omicron cases were vaccinated for more than 6 months. In Delta cases, the two-dose aVE was 52% (95% confidence interval, 39–63%) against pneumonia and 61% (15%, 82%) against severe disease. Two-dose vaccination reduced the duration of viral shedding in Delta cases, but not in booster-vaccinated Omicron cases. In Omicron cases, three-dose aVE was 68% (18%, 88%) effective against pneumonia, while two-dose vaccination was insufficient for Omicron. E-values were calculated, and the E-values confirmed the robustness of our findings. Conclusions: In Delta cases, two-dose vaccination within 6 months reduced pneumonia, disease severity, and the duration of viral shedding. Booster vaccination provided a high level of protection against pneumonia with Omicron and should be prioritized.
    Type of Medium: Online Resource
    ISSN: 2076-393X
    URL: Article
    DOI: 10.3390/vaccines10101753
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2703319-3
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  • 3
    Online Resource
    Online Resource
    Multi-channel signal transmission method of non-contact slip ring based on capacitive coupling and quasi-time division multiplexing
    AIP Publishing ; 2019
    In:  Review of Scientific Instruments Vol. 90, No. 4 ( 2019-04-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 90, No. 4 ( 2019-04-01)
    Abstract: The single-axis rotary inertial navigation system can use the rotary joint to compensate the drift error of the inertial components. Therefore, whether the signal can be transmitted in the rotary joint freely, accurately, for a long time, and without maintenance determines the accuracy of inertial navigation. A noncontact slip ring based on capacitive coupling and quasitime division multiplexing is proposed in this paper. First, the theoretical calculation is carried out on the method of signal transmission using two pairs of capacitors, and the factors affecting signal quality are analyzed. Second, the principle of quasitime division multiplexing and Manchester encoding is used to solve the problems such as converting multiple signals into a single signal, capacitor cannot transmit DC signal, and signal synchronization. Finally, an improved differential transmission method is designed to enhance the anti-interference of the system and to solve the level mismatch of the primary and secondary circuits. In this paper, a prototype is designed to verify the method. When the transmission rate of the three navigation signals is 1 Mbps, the navigation signals can be transmitted without distortion. And the maximum transmission frequency is 17 MHz, which can be further improved. The experimental results show that the proposed method provides a new design for the signal transmission of noncontact power slip ring. It has the advantages of high reliability, fast transmission rate, and good versatility. It can be applied to aviation, aerospace, navigation, wind power generation, and other fields where the power and signal need to be transmitted simultaneously.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/1.5089226
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 4
    Online Resource
    Online Resource
    Ion beam stopping power effects on nuclear fusion reactions
    AIP Publishing ; 2022
    In:  Physics of Plasmas Vol. 29, No. 10 ( 2022-10-01)
    Details
    In: Physics of Plasmas, AIP Publishing, Vol. 29, No. 10 ( 2022-10-01)
    Abstract: Fusion reactions in a plasma environment are fundamental issues with general interest in high energy density sciences. The reaction rate in an astro-system, which may differ from cold matter, is an important subject in the ambiguous problems of elemental abundance. In addition, the stopping of charged particle in plasma has a considerable impact on the design of nuclear fusion reactors as it is related to the α-particle heating process and ion-driven fast ignition, but still needs better understanding. In this research, an experiment on laser-driven D–D fusion reactions (D + D → 3He + n) has been carried out to investigate the effects of ion stopping power in plasma on fusion reactivities. The neutron yields, plasma density, and deuteron energy loss in the plasma have been measured simultaneously, and the plasma temperature has been analyzed from simulations. It is experimentally demonstrated that the fusion reaction yield is closely correlated with ion beam transportation in the plasma. As a cold target heated to plasma, the reaction probabilities from a deuteron beam and deuterated target interactions can be enhanced or suppressed, which is ascribed to the deuteron stopping power variation in the plasma. The results show the importance of considering the temperature adjusted ion stopping power to correctly model the fusion reaction yields. This work has an impact on understanding the fusion reactions in plasma environment, which is also likely to help achieve higher neutron yields.
    Type of Medium: Online Resource
    ISSN: 1070-664X , 1089-7674
    URL: Article
    DOI: 10.1063/5.0103340
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 1472746-8
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  • 5
    Online Resource
    Online Resource
    Multi-lifting synchrosqueezing transform for nonstationary signal analysis of rotating machinery
    Elsevier BV ; 2022
    In:  Measurement Vol. 191 ( 2022-03), p. 110758-
    Details
    In: Measurement, Elsevier BV, Vol. 191 ( 2022-03), p. 110758-
    Type of Medium: Online Resource
    ISSN: 0263-2241
    URL: Article
    DOI: 10.1016/j.measurement.2022.110758
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 2000550-7
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  • 6
    Online Resource
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    Dual‐Scale Integration Design of Sn–ZnO Catalyst toward Efficient and Stable CO 2 Electroreduction
    Wiley ; 2022
    In:  Advanced Materials Vol. 34, No. 38 ( 2022-09)
    Details
    In: Advanced Materials, Wiley, Vol. 34, No. 38 ( 2022-09)
    Abstract: Electrochemical CO 2 reduction to CO is a potential sustainable strategy for alleviating CO 2 emission and producing valuable fuels. In the quest to resolve its current problems of low‐energy efficiency and insufficient durability, a dual‐scale design strategy is proposed by implanting a non‐noble active Sn–ZnO heterointerface inside the nanopores of high‐surface‐area carbon nanospheres (Sn–ZnO@HC). The metal d‐bandwidth tuning of Sn and ZnO alters the extent of substrate–molecule orbital mixing, facilitating the breaking of the *COOH intermediate and the yield of CO. Furthermore, the confinement effect of tailored nanopores results in a beneficial pH distribution in the local environment around the Sn–ZnO nanoparticles and protects them against leaching and aggregating. Through integrating electronic and nanopore‐scale control, Sn–ZnO@HC achieves a quite low potential of −0.53 V vs reversible hydrogen electrode (RHE) with 91% Faradaic efficiency for CO and an ultralong stability of 240 h. This work provides proof of concept for the multiscale design of electrocatalysts.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v34.38
    DOI: 10.1002/adma.202204637
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 1474949-X
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  • 7
    Online Resource
    Online Resource
    Dual‐Scale Integration Design of Sn–ZnO Catalyst toward Efficient and Stable CO 2 Electroreduction (Adv. Mater. 38/2022)
    Wiley ; 2022
    In:  Advanced Materials Vol. 34, No. 38 ( 2022-09)
    Details
    In: Advanced Materials, Wiley, Vol. 34, No. 38 ( 2022-09)
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v34.38
    DOI: 10.1002/adma.202270268
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 1474949-X
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  • 8
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    The therapeutic effect and safety of the drugs for COVID-19 : A systematic review and meta-analysis
    Ovid Technologies (Wolters Kluwer Health) ; 2021
    In:  Medicine Vol. 100, No. 16 ( 2021-04-23), p. e25532-
    Details
    In: Medicine, Ovid Technologies (Wolters Kluwer Health), Vol. 100, No. 16 ( 2021-04-23), p. e25532-
    Abstract: Coronavirus disease 2019 (COVID-19) has spread almost all regions of the world and caused great loss to the whole body of mankind. Thus, numerous clinical trials were conducted to find specific medicine for COVID-19 recently. However, it remains unanswered whether they are beneficial. Objective: This study aimed to evaluate the efficiency and safety of the COVID-19 medicine. Methods: Studies were determined through searching PubMed, Embase, Cochrane Library, and Medline. The studies of COVID-19 medicine were involved with eligible end points containing mortality, discharge rate, rate of clinical improvement, and rate of serious adverse events. Results: A total of 33 studies involving 37,879 patients were included in our study, whose intervening measures contained three major types of COVID-19 medicine, ACEI/ARB, antiviral medicine, and chloroquine/hydroxychloroquine. Compared to control group, COVID-19 drugs have no distinct effect on mortality (RR, 0.93; 95% CI, 0.79–1.11, P  = .43) and discharge rate (RR, 1.06; 95% CI, 0.98–1.14, P  = .13). However, antiviral medicine presents the obvious advantage in clinical improvement (RR, 1.11; 95% CI, 1.01–1.23, P   〈  .05). In addition, the serious adverse events rate (RR, 0.75; 95% CI, 0.63–0.88, P   〈  .05) of COVID-19 medicine is lower than control group. Conclusion: The results indicated antiviral medicine was potential specific medicine for COVID-19 treatment by improving clinical symptoms, but it failed to increase the discharge rate and reduce mortality. Chloroquine/hydroxychloroquine and ACEI/ARB had no significant effect on treatment of COVID-19, thus they were not recommended for routine medication. Moreover, more trials are needed to find effective drugs to lower the mortality of COVID-19 patients.
    Type of Medium: Online Resource
    ISSN: 0025-7974 , 1536-5964
    URL: Article
    DOI: 10.1097/MD.0000000000025532
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
    detail.hit.zdb_id: 2049818-4
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  • 9
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    Online Resource
    Observer‐based output feedback event‐triggered robust H∞ consensus control of uncertain linear multi‐agent systems with directed networks
    Wiley ; 2022
    In:  International Journal of Robust and Nonlinear Control Vol. 32, No. 9 ( 2022-06), p. 5555-5573
    Details
    In: International Journal of Robust and Nonlinear Control, Wiley, Vol. 32, No. 9 ( 2022-06), p. 5555-5573
    Abstract: Based on accessible output signals, the distributed event‐triggered robust consensus control is investigated for a range of uncertain linear multi‐agent systems with external disturbances under directed networks in this article. By introducing some certain variable transformations, the consensus problem of the multi‐agent system is converted into the stability analysis for a cluster of sub‐systems. Different from some conventional consensus protocols which rely on full states and continuous interactions among agents, an event‐triggered consensus control protocol only based on the local observed relative states of neighboring agents at event moments is proposed by adopting an observer to each agent. It is strictly proved that all agents can achieve consensus meanwhile satisfying the desired robust performance and no agent exhibits Zeno behavior under the proposed control protocol. Finally, an example of a typical mass‐spring system is given to illustrate the validity of the theoretical results.
    Type of Medium: Online Resource
    ISSN: 1049-8923 , 1099-1239
    URL: Issue
    URL: Article
    DOI: 10.1002/rnc.v32.9
    DOI: 10.1002/rnc.6103
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2019094-3
    SSG: 17,1
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  • 10
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    Alkaline earth metals for osteogenic scaffolds: From mechanisms to applications
    Wiley ; 2023
    In:  Journal of Biomedical Materials Research Part B: Applied Biomaterials Vol. 111, No. 7 ( 2023-07), p. 1447-1474
    Details
    In: Journal of Biomedical Materials Research Part B: Applied Biomaterials, Wiley, Vol. 111, No. 7 ( 2023-07), p. 1447-1474
    Abstract: Regeneration of bone defects is a significant challenge today. As alternative approaches to the autologous bone, scaffold materials have remarkable features in treating bone defects; however, the various properties of current scaffold materials still fall short of expectations. Due to the osteogenic capability of alkaline earth metals, their application in scaffold materials has become an effective approach to improving their properties. Furthermore, numerous studies have shown that combining alkaline earth metals leads to better osteogenic properties than applying them alone. In this review, the physicochemical and physiological characteristics of alkaline earth metals are introduced, mainly focusing on their mechanisms and applications in osteogenesis, especially magnesium (Mg), calcium (Ca), strontium (Sr), and barium (Ba). Furthermore, this review highlights the possible cross‐talk between pathways when alkaline earth metals are combined. Finally, some of the current drawbacks of scaffold materials are enumerated, such as the high corrosion rate of Mg scaffolds and defects in the mechanical properties of Ca scaffolds. Moreover, a brief perspective is also provided regarding future directions in this field. It is worth exploring that whether the levels of alkaline earth metals in newly regenerated bone differs from those in normal bone. The ideal ratio of each element in the bone tissue engineering scaffolds or the optimal concentration of each elemental ion in the created osteogenic environment still needs further exploration. The review not only summarizes the research developments in osteogenesis but also offers a direction for developing new scaffold materials.
    Type of Medium: Online Resource
    ISSN: 1552-4973 , 1552-4981
    URL: Issue
    URL: Article
    DOI: 10.1002/jbm.b.v111.7
    DOI: 10.1002/jbm.b.35246
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2130917-6
    SSG: 12
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