GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Material
Language
Years
  • 1
    Online Resource
    Online Resource
    Royal Society of Chemistry (RSC) ; 2023
    In:  Journal of Materials Chemistry A Vol. 11, No. 26 ( 2023), p. 14187-14194
    In: Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 26 ( 2023), p. 14187-14194
    Abstract: Mechanically compressible energy devices represent one of the most promising candidates for powering flexible and portable electronics, but often suffer from their limited stability of performance under high compressive strains. We here demonstrate a type of reduced graphene oxide/carbon nanotubes (RGO/CNTs) composite aerogel with high conductivity and compressive strength for elastic energy conversion and storage devices with high performance. The catalyst for growth of CNTs is loaded in the RGO aerogel by a simple solution method, and then, highly aligned CNT arrays are directly grown among RGO layers through chemical vapor deposition. The pillared CNT arrays between lamellar RGO layers provide the RGO/CNTs aerogel with extremely high conductivity (214.7 S m −1 ) and compressive strength (73.6 kPa), which are superior to most previously reported results. With using the RGO/CNTs derived composite aerogels as electrodes, the achieved supercapacitors not only exhibit high specific capacitance (215.5 mF cm −3 ), but also show outstanding compression stability without performance degradation even after 15 000 repeated compression cycles. Furthermore, the piezoelectric nanogenerator based on the RGO/CNTs-derived aerogel can deliver a stable piezoelectric voltage of 0.6 V and excellent stability. This lamellar/pillared RGO/CNTs aerogel can be used as an efficient platform to load other functional materials for other elastic electronics with high performance.
    Type of Medium: Online Resource
    ISSN: 2050-7488 , 2050-7496
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2702232-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    In: Advanced Functional Materials, Wiley, Vol. 32, No. 16 ( 2022-04)
    Abstract: Asymmetric supercapacitors (ASCs) with high working voltages, power density, and long cyclic life have attracted widespread interest. Along with their rapid charge process, the ASCs also exhibit fast self‐discharge behavior, which remains a big challenge. Unfortunately, very limited studies have been focused on this crucial issue. Here, a flexible asymmetric supercapacitor with excellent electrochemical performance and ultra‐long self‐discharge time is reported, which is enabled by designing a bilayer heterogeneous polymer electrolyte (HPE) of polyanions/polycations between the positive electrode and the negative electrode. The developed HPE‐based ASCs exhibit comparable electrochemical performance with those of ASCs by using homogeneous polymer electrolytes. The existing repulsive force between the charged polyelectrolytes and the movable ions can efficiently restrict the diffusion and the redistribution of the small ions, which gives the fully charged HPE‐based ASC an extremely long self‐discharge time of 110 h as the open‐circuit voltage decreases to half of its original value, over ten times longer than the devices based on homogeneous polymer electrolytes. This work indicates that the self‐discharge rate of ASCs can be efficiently suppressed by using the heterogeneous polymer electrolyte, which is helpful in the context of broadening their applications in the field of flexible electronics.
    Type of Medium: Online Resource
    ISSN: 1616-301X , 1616-3028
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2029061-5
    detail.hit.zdb_id: 2039420-2
    SSG: 11
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    In: Small Structures, Wiley, Vol. 3, No. 8 ( 2022-08)
    Abstract: Zinc ion batteries (ZIBs) with high capacity and superior safeness represent a promising candidate as the power source for portable electronics. However, it remains a big challenge to construct high‐performance ZIBs with highly compressible capability, due to the limited compressible properties of electrodes and electrolyte. Herein, a highly compressible ZIB using a cathode of polyaniline/carbon foam (PANI/CF), an anode of Zn/CF, and a gel electrolyte containing polyvinyl alcohol and Zn(CF 3 SO 3 ) 2 is demonstrated. The 3D interconnection structure of the self‐supporting CF material not only can provide compressible platform to load active materials, but also can facilitate transport of ions. As desired, the newly developed ZIB exhibits high specific capacity of 215 mAh g −1 at a current density of 1 A g −1 and excellent cyclic stability (88% after 2500 charge/discharge cycles). Benefiting from the excellent mechanical compressibility and stability of CFs, the ZIBs well maintain their original electrochemical performance under a compressive strain as high as 75% and even pressing/releasing for 1000 cycles under a strain of 60%, indicating outstanding compressible capability. The compressible ZIB represents a promising candidate to be used as power supplies for portable electronics in the near future.
    Type of Medium: Online Resource
    ISSN: 2688-4062 , 2688-4062
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 3035497-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Online Resource
    Online Resource
    Elsevier BV ; 2023
    In:  Journal of Colloid and Interface Science Vol. 649 ( 2023-11), p. 591-600
    In: Journal of Colloid and Interface Science, Elsevier BV, Vol. 649 ( 2023-11), p. 591-600
    Type of Medium: Online Resource
    ISSN: 0021-9797
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2023
    detail.hit.zdb_id: 1469021-4
    detail.hit.zdb_id: 241597-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    In: American Journal of Respiratory and Critical Care Medicine, American Thoracic Society, Vol. 199, No. 3 ( 2019-02-01), p. 352-361
    Type of Medium: Online Resource
    ISSN: 1073-449X , 1535-4970
    RVK:
    Language: English
    Publisher: American Thoracic Society
    Publication Date: 2019
    detail.hit.zdb_id: 1468352-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    In: Journal of Affective Disorders, Elsevier BV, Vol. 278 ( 2021-01), p. 672-677
    Type of Medium: Online Resource
    ISSN: 0165-0327
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1500487-9
    SSG: 12
    SSG: 5,2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    In: Frontiers in Immunology, Frontiers Media SA, Vol. 13 ( 2022-7-11)
    Abstract: Monocytes are a highly heterogeneous population subcategorized into classical, intermediate and nonclassical subsets. How monocytes and their subsets may shape brain structures and functions in schizophrenia remains unclear. The primary goal of this cross-sectional study was to investigate monocytic subsets and their specific signature genes in regulation of cerebral cortical thickness and cognitive functions in first-episode schizophrenia (FES) patients. Whole-blood RNA sequencing of 128 FES patients and 111 healthy controls (HCs) were conducted and monocyte-specific differentially expressed genes were further analyzed. The MATRICS Consensus Cognitive Battery (MCCB) test, cortical neuroimaging and flow cytometric staining of peripheral blood monocytic subsets were performed among the participants. Significant changes in expressions of 54 monocytic signature genes were found in patients, especially for intermediate and nonclassical monocytic subsets with the most outstanding alterations being downregulated S100 Calcium Binding Protein A ( S100A ) and upregulated Interferon Induced Transmembrane Protein ( IFITM ) family members, respectively. Meanwhile, percentage of blood nonclassical monocytes was decreased in patients. Cortical thicknesses and MCCB performance were expectantly reduced and weaker intra-relationships among monocytic signature genes and cortices, respectively, were noted in patients compared to HCs. Monocytic genes were negatively associated with both cortical thicknesses and cognition in HCs, which was interestingly weakened or even reversed in patients, with nonclassical monocytic genes showing the greatest statistical significance. This study reveals that while monocytes may have negative effects on brain structure and cognition, the ameliorated phenomenon observed in schizophrenia may reflect an (mal)adaptive change of monocytes at early stage of the disorder.
    Type of Medium: Online Resource
    ISSN: 1664-3224
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2606827-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    In: Schizophrenia Bulletin, Oxford University Press (OUP), ( 2023-08-04)
    Abstract: Low-grade neural and peripheral inflammation are among the proposed pathophysiological mechanisms of schizophrenia. White matter impairment is one of the more consistent findings in schizophrenia but the underlying mechanism remains obscure. Many cerebral white matter components are sensitive to neuroinflammatory conditions that can result in demyelination, altered oligodendrocyte differentiation, and other changes. We tested the hypothesis that altered immune-inflammatory response system (IRS) and compensatory immune-regulatory reflex system (IRS/CIRS) dynamics are associated with reduced white matter integrity in patients with schizophrenia. Study Design Patients with schizophrenia (SCZ, 70M/50F, age = 40.76 ± 13.10) and healthy controls (HCs, 38M/27F, age = 37.48 ± 12.31) underwent neuroimaging and plasma collection. A panel of cytokines were assessed using enzyme-linked immunosorbent assay. White matter integrity was measured by fractional anisotropy (FA) from diffusion tensor imaging using a 3-T Prisma MRI scanner. The cytokines were used to generate 3 composite scores: IRS, CIRS, and IRS/CIRS ratio. Study Results The IRS/CIRS ratio in SCZ was significantly higher than that in HCs (P = .009). SCZ had a significantly lower whole-brain white matter average FA (P  & lt; .001), and genu of corpus callosum (GCC) was the most affected white matter tract and its FA was significantly associated with IRS/CIRS (r = 0.29, P = .002). FA of GCC was negatively associated with negative symptom scores in SCZ (r = −0.23, P = .016). There was no mediation effect taking FA of GCC as mediator, for that IRS/CIRS was not associated with negative symptom score significantly (P = .217) in SCZ. Conclusions Elevated IRS/CIRS might partly account for the severity of negative symptoms through targeting the integrity of GCC.
    Type of Medium: Online Resource
    ISSN: 0586-7614 , 1745-1701
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2180196-4
    SSG: 15,3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    In: AIP Advances, AIP Publishing, Vol. 12, No. 2 ( 2022-02-01)
    Abstract: The audible signal (20 Hz to 20 kHz) generated during the operation of a dry-type reactor is one of the key features to evaluate its operation state. However, at present, the time/frequency domain features of the audible signal under typical insulation defects are not clear, which makes it difficult to effectively carry out the fault diagnosis of the dry-type reactor based on audible signals. Based on this, the audible signal features under typical insulation defect discharge of the dry-type reactor are studied in this paper. Three typical insulation defect discharge models (metal protrusion defect, pollution defect, and metal foreign bodies defect) are simulated; then, the discharge acoustic signals are collected under the voltage of 8 kV. Analysis of acoustic signal features shows that the acoustic signal of metal protrusion defect discharge occurs in the positive half cycle of power frequency with the cycle of 20 ms. Both pollution defect discharge and metal foreign bodies defect discharge show intermittent discharge; during the discharge, the discharge acoustic signal of pollution defect has features similar to that of metal protrusion defect, while the discharge of metal foreign bodies defect shows randomness with a larger amplitude of discharge acoustic signal (up to 110 dB). Based on the frequency domain feature vectors’ extraction, it is found that the odd harmonic component of the metal protrusion defect discharge acoustic signal accounts for more than twice the even-order harmonic, and the high-frequency energy (12.5–25 kHz) is the main component. The discharge acoustic signal of the metal foreign bodies defect is mainly low-frequency energy, and the high-frequency energy proportion of pollution defect discharge acoustic signal is similar to that of low-frequency energy. In addition, the variance of high-frequency energy ratio (Rhf) of the metal foreign bodies defect discharge acoustic signal is 5.25 and 21 times that of the metal protrusion defect and pollution defect. This study provides some technical support for further detection and assessment of the operation state of the dry-type reactor based on audible signals.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2583909-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    In: Translational Psychiatry, Springer Science and Business Media LLC, Vol. 11, No. 1 ( 2021-02-08)
    Abstract: Cognitive impairment is a core characteristic of schizophrenia, but its underlying neural mechanisms remain poorly understood. Reduced brain-derived neurotrophic factor (BDNF), a protein critical for neural plasticity and synaptic signaling, is one of the few molecules consistently associated with cognitive deficits in schizophrenia although the etiological pathway leading to BDNF reduction in schizophrenia is unclear. We examined microRNA-195 (miR-195), a known modulator of BDNF protein expression, as a potential mechanistic component. One-hundred and eighteen first-episode patients with schizophrenia either antipsychotic medication-naïve or within two weeks of antipsychotic medication exposure and forty-seven age- and sex-matched healthy controls were enrolled. MiR-195 and BDNF mRNA and BDNF protein levels in peripheral blood were tested. Cognitive function was assessed using the MATRICS Consensus Cognitive Battery (MCCB). MiR-195 was significantly higher ( p  = 0.01) whereas BDNF mRNA ( p   〈  0.001) and protein ( p  = 0.016) levels were significantly lower in patients compared with controls. Higher miR-195 expression was significantly correlated to lower BDNF protein levels in patients (partial r  = −0.28, p  = 0.003) and lower BDNF protein levels were significantly associated with poorer overall cognitive performance by MCCB and also in speed of processing, working memory, and attention/vigilance domains composite score ( p  = 0.002–0.004). The subgroup of patients with high miR-195 and low BDNF protein showed the lowest level of cognitive functions, and miR-195 showed significant mediation effects on cognitive functions through BDNF protein. Elevated miR-195 may play a role in regulating BDNF protein expression thereby influencing cognitive impairments in schizophrenia, suggesting that development of cognition enhancing treatment for schizophrenia may consider a micro-RNA based strategy.
    Type of Medium: Online Resource
    ISSN: 2158-3188
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2609311-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...