•We first report the integration of filter membrane and Ca2Nb3O10 nanosheets UV photodetectors (FM@CNO UV PDs).•The FM@CNO PD shows high responsivity (0.08 AW−1), high detectivity (1.1 × 1012 Jones), ...high UV/visible rejection ratio (3.86 × 103) and fast speed (0.12/1.24 ms) under 300 nm light illumination.•The FM@CNO PD exhibits excellent flexibility after many bending cycles. And the FM@CNO array device can be used as a pixel array detector for UV imaging.
We report that the integration of filter membrane and Ca2Nb3O10 nanosheets (FM@CNO) UV photodetector (UV PD) shows high performance and excellent flexibility. The Ca2Nb3O10 nanosheets were prepared by a facile solid-state reaction and liquid exfoliation process. The Ca2Nb3O10 nanosheets can be integrated into the pores of a filter membrane via a simple vacuum filtration method. The FM@CNO UV PD shows high performance under 300 nm light illumination at 5 V bias, including high responsivity (0.08 AW−1), high detectivity (1.1 × 1012 Jones), high UV/visible rejection ratio (3.86 × 103) and fast speed (0.12/1.24 ms). Furthermore, the FM@CNO device exhibits excellent flexibility after many bending cycles. In addition, the FM@CNO array device was used as a pixel array detector for UV imaging. This work provides a novel approach to achieve high performance flexible PDs based on filter membrane and two dimensional materials.
Display omitted
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
A condensed benzothiophene peripherally carrying rich sulfur atoms favoring π−π stacking is developed through facile approaches. The 1H NMR and the absorption spectra strongly indicate that this ...molecule easily forms the self-assembled structures in solutions. Microwires directly precipitate from solution, and such 1D self-assembled nano- and microstructures can be controlled and tuned by changing solvents and casting on various substrates. Single microwire transistor based on such condensed benzothiophene is easily fabricated through solution process with carrier mobility as high as 0.01 cm2 V-1 s-1.
Full text
Available for:
IJS, KILJ, NUK, PNG, UL, UM
Both tumor-cell-targeting and BBB (blood-brain barrier)-penetrating ability are the key characteristics for glioma theranostics. We established one type of nanomicellar probe functionalized with a ...newly developed peptide WES. The micellar system could enact a series of cascaded functions in living bodies. It could specifically recruit the ApoE corona in blood circulation rather than perform nonspecific protein absorption. Following, it could penetrate into the BBB in an active manner. Finally, and most importantly, it could recognize and target the tumor marker as well as deliver drugs effectively toward glioma. The cascaded micellar system has shown satisfactory therapeutic ability for glioma in both a subcutaneous and orthotopic model, which provides a prospective strategy for brain cancer treatment.
Full text
Available for:
IJS, KILJ, NUK, PNG, UL, UM
The Chinese Loess Plateau has been the cradle of Chinese civilization and the main human settlement in China for thousands of years, where anthropogenic activities are believed to have deeply eroded ...natural landscapes. After decades of minimal leopard sighting in forests of northern China, due to serious human interference, we recently discovered that the leopard population is recovering. This finding provides hope for successful biodiversity conservation in human-dominated ecosystems. To understand the mechanism of leopard return into such a highly fragmented landscape, we applied the concept of ecological networks (ENs) to identify key factors promoting leopard restoration and quantify the ecological links among habitats. We first determined the existence of a healthy leopard population in the study area based on the size of its home range and presence of breeding individuals. We then innovatively used the relationship between species richness and top predators to generate ENs, and found that the connectivity of ENs had a significant positive interaction with leopard survival. Our study validates the effectiveness of establishing ecologically connected habitats for leopard protection, and highlights the importance of applying ENs for conservation planning in highly fragmented ecosystems. This study provides a successful case for the protection of top predators in human-dominated landscapes.
Display omitted
•Effectiveness of ecological networks is verified at large scale.•Species richness contributes to the conservation of top predators.•The study provides successful conservation cases in fragmented landscapes.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Megalurothrips usitatus (Bagnall), the main pest on legume vegetables, is controlled by pyrethroids in the field. Field strains of M. usitatus resistant to pyrethroids were collected from three areas ...in Hainan Province (Haikou, Ledong, and Sanya City), and two mutations, T929I and K1774N, were detected in the voltage-gated sodium channel. In this study, the sodium channel in M. usitatus was first subcloned and successfully expressed in Xenopus oocytes. The single mutation (T929I or K1774N) and double mutation (T929I/K1774N) shifted the voltage dependence of activation in the hyperpolarization direction. The three mutants all reduced the amplitude of tail currents induced by type I (permethrin and bifenthrin) and type II (deltamethrin and λ-cyhalothrin) pyrethroids. Homology modeling analysis of these two mutations shows that they may change the local hydrophobicity and positive charge of the sodium channel. Our data can be used to reveal the causes of the resistance of M. usitatus to pyrethroids and provide guidance for the comprehensive control of M. usitatus in the future.
Full text
Available for:
IJS, KILJ, NUK, PNG, UL, UM, UPUK
Conjugated carbonyl compounds with high theoretical capacity, low cost, structural flexibility and abundant resources are potential cathodes in metal-ion batteries (lithium-LIBs, sodium-SIBs, ...kalium-KIBs). Regrettably, their inherent drawbacks of high solubility and low electrical conductivity limit their further application. Herein, different mass ratios of reduced graphene oxide wrapped poly (1,5-anthraquinonyl sulfide) (PAQS/rGO) composites were prepared through a calcination-treatment process aiming at decreasing the dissolution and enhancing the conductivity. XRD, FTIR and Raman analysis confirmed the successful synthesis of PAQS. XRD analysis also confirmed the conversion of GO to rGO. Four-probe test results showed that the conductivity of composites increased as the rGO ratio increased. SEM images showed that PAQS/rGO composites presented microsphere morphologies. Profiting from the enhanced conductivity and limited dissolution in electrolyte, the PAQS2 (the mass ratios of PAQS and rGO is 10:2) composite exhibited outstanding performance both in half- and full-batteries. In LIBs/SIBs, PAQS2 exhibited reservable discharge capacities of 121 and 115 mAh g−1 at 50 mA g−1 after 200 and 400 cycles, respectively. In PTPAn/PAQS2 all-organic Li/Na-ion batteries, reservable charge/discharge capacities of 42.1/39 and 42.1/40.4 mAh g−1 were retained at 50 mA g−1 after 200 cycles, respectively. Ex-situ FT-IR analysis further performed the redox reaction of carbonyl groups during charging and discharging.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Purpose Trust is the glue that holds cooperative relationships together and often exists in an asymmetric manner. The purpose of this study is to explore how to mitigate the issue of losses or ...increased transaction costs caused by opportunistic behavior in a soft environment where trust asymmetry is quite common and difficult to avoid. Design/methodology/approach This study focuses on examining asymmetric trust between the government and the private sector in public-private partnership (PPP) projects. Drawing upon both project realities and relevant literature, the primary conditional variables influencing asymmetric trust are identified. These variables encompass power perception asymmetry, information asymmetry, interaction behavior, risk perception differences and government-side control. Subsequently, through the use of a survey questionnaire, binary-matched data from both the government and the private sector are collected. The study employs fuzzy-set qualitative comparative analysis (fsQCA) to conduct a configurational analysis, aiming to investigate the causal pathways that trigger asymmetric trust. Findings No single conditional variable is a necessary condition for the emergence of trust asymmetry. The pathways leading to a high degree of trust asymmetry can be categorized into two types: those dominated by power perception and those involving a combination of multiple factors. Differences in power perception play a crucial role in the occurrence of high trust asymmetry, yet the influence of other conditional variables in triggering trust asymmetry should not be overlooked. Originality/value The findings can contribute to advancing the study of trust relationships in the field of Chinese PPP projects. Furthermore, they hold practical value in facilitating the enhancement of trust relationships between the government and the private sector.
Electrolyte design has become ever more important to enhance the performance of lithium‐ion batteries (LIBs). However, the flammability issue and high reactivity of the conventional electrolytes ...remain a major problem, especially when the LIBs are operated at high voltage and extreme temperatures. Herein, we design a novel non‐flammable fluorinated ester electrolyte that enables high cycling stability in wide‐temperature variations (e.g., −50 °C–60 °C) and superior power capability (fast charge rates up to 5.0 C) for the graphite||LiNi0.8Co0.1Mn0.1O2 (NCM811) battery at high voltage (i.e., >4.3 V vs. Li/Li+). Moreover, this work sheds new light on the dynamic evolution and interaction among the Li+, solvent, and anion at the molecular level. By elucidating the fundamental relationship between the Li+ solvation structure and electrochemical performance, we can facilitate the development of high‐safety and high‐energy‐density batteries operating in harsh conditions.
A novel non‐flammable electrolyte that endows Li‐ion battery with high voltage, wide temperature, and fast charging is developed. Moreover, a new solvation chemistry‐derived dynamic interfacial model, involving the kinetic and thermodynamic properties of electrolyte components on the cathode and anode simultaneously, was presented for the first time to interpret such excellent performance and guide the electrolyte design at a molecular scale.
Full text
Available for:
BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SBCE, SBMB, UL, UM, UPUK
Creating new nanostructured materials inspired by biomaterials is one of the most fascinating topics owing to their fantastic properties. Herein, we synthesize a new hollow aurilave-like carbon using ...the natural spores of Lycoperdon Boavista (SLBs) as hard-template, where the heteroatom of nitrogen and oxygen can be in-situ doped simultaneously. The hollow N/O-co-doped carbon (HNOC) has a high specific surface area and is rich in defects, enabling high performances in sodium-ion batteries (SIBs) and supercapacitors (SCs). A high sodium storage capacity of 246 and 107 mAh g−1 with superior stability over 1000 cycles can be achieved at the rates of 0.1 and 2 A g−1, respectively. Besides, the high rate capacity of 260 F g−1 at 5 A g−1 and extraordinary cycling stability over 10,000 cycles are also demonstrated in SCs. The great features of HNOC are further studied versus Na3V2(PO4)3 cathode in a sodium ion full battery, where the excellent stability and span life are both confirmed. We hope this newly-designed carbon material could complement the structure-related properties in electrochemistry, and also the presented synthetic strategy can be widely extended for designing more functional materials with greater capabilities.
Display omitted
•Bio-inspired hollow Aurilave-like carbon in-situ doped by N and O is introduced.•High performances of HNOC is confirmed in sodium batteries and in supercapacitors.•New sodium-ion battery of HNOC .| Na3V2(PO4)3 with greater capabilities is presented.•Structural-related performance analysis is performed to understand the behaviors.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
You have reached the maximum number of search results that are displayed.
For better performance, the search offers a maximum of 1,000 results per query (or 50 pages if the option 10/page is selected).
Consider using result filters or changing the sort order to explore your results further.
PDF
