Nwas

Lithium-sulfur (Li-S) batteries have been known as a promising substitute due to their much higher theoretical energy density than that of traditional Li-ion batteries. However, the low utilization of sulfur caused by the poor conductivity of sulfur and shuttle of lithium polysulfides (LiPSs) severely restrict the commercial application of Li-S batteries, especially in flexible wearable devices. Herein, a hierarchical NCNT@Co-Co3O4 nanowire arrays (NWAs) integrated electrode was developed based on the rational design of density functional theory (DFT) calculations, which shows simultaneous confinement adsorption and catalysis conversion of LiPSs...

Suicide is a major public health concern, with data suggesting that suicide rates may be increasing. Ambulance services receive thousands of calls each year related to mental health issues, with responding to suicide a common element of the job. This article uses a service evaluation to explore the data collected by the North West Ambulance Service (NWAS) NHS Trust in relation to deaths by suicide and discuss how this can be used to improve pre-hospital and emergency department practice. The service evaluation used a retrospective patient cohort comprising calls made to NWAS over a six-month period from 1 January to 28 June 2019 inclusive...

In this work, for the first time we are reporting the development of a kind of high rate and long cycle life electrode composed of nickel cobalt manganese ternary carbonate hydroxide (NiCoMn-CH) ultrathin nanoflakes coated on Co-CH nanowire arrays (NWAs), which are directly generated on a nickel foam (NF) support. The hierarchical heterostructures are synthesized via a scalable two step solvothermal strategy without any adscititious surfactant and binder. The smart combination of Co-CH and NiCoMn-CH nanostructures in the nanowire arrays shows significant synergistic effect on the enhancement of the electrochemical performance of the as-fabricated supercapacitors...

Precise deuterium incorporation with controllable deuterated sites and amount is extremely desirable. Here, a facile and efficient electrocatalytic deuterodehalogenation of halides using heavy water (D 2 O) as the deuteration reagent and electrochemical in situ formed copper nanowire arrays (Cu NWAs) as the cathode was demonstrated. A cross-coupling of carbon and deuterium free radicals might be involved for this ipso-selective deuteration. This method exhibited excellent chemoselectivity and high compatibility with the easily reducible functional groups such as C=C, C≡C, C=O, C=N, and C≡N bonds...

The development of efficient electrocatalysts for overall water splitting is important for future renewable energy systems. Herein, macroporous CoO covered by Co/N-doped graphitic carbon nanosheet arrays (mac-CoO@Co/NGC NSAs) were constructed by engineering a mesoporous CoO nanowire (mes-CoO NWAs) core with highly conductive Co nanoparticles coated by a N-doped graphitic carbon (Co/NGC) shell. The in situ derived Co/NGC shell not only introduces electrocatalytic active sites for the hydrogen evolution reaction (HER) but also promotes the oxygen evolution reaction (OER) through the strong interaction between the CoO core and the Co/NGC shell...

In nature, leaf photosynthesis is the most common solar energy conversion system, which contains light absorption and conversion processes. Most interestingly, the leaves of green plant are almost lamellar. Herein, inspired by the structure and light conversion capacity of plants, we developed the crassula-peforata-structured CuO@CuS/polydimethylsiloxane (CuO@CuS/PDMS) nanowire arrays (NWAs) on copper foam (CF) with effective light to heat capacity to clean-up viscous crude oil (~105 mPa s) by in-suit reducing the viscosity of crude oil...

Indium Tin Oxide nanowire arrays (ITO-NWAs), as epsilon-near-zero (ENZ) materials, exhibit a fast response time and a low saturable absorption intensity, which make them promising photoelectric materials. In this study, ITO-NWAs were successfully fabricated using a chemical vapor deposition (CVD) method, and the saturable absorption properties of this material were characterized in the near-infrared region. Further, passively Q-switched all-solid-state lasers were realized at wavelengths of 1.0, 1.3, and 2...

Three-dimensional graphene (3D GR)-based hybrids have received significant attention due to their unique structures and promising applications in supercapacitors. In this paper, 3D GR with small pore sizes has been prepared by chemical vapor deposition using commercial nickel nanowires as the template. After nitric acid treatment, the hydrophilicity of 3D GR improved. Polyaniline nanowire arrays (PANI NWAs) have been successfully grown on its surface by in situ polymerization to obtain hybrid PANI NWA/3D GR...

To achieve practical aqueous rechargeable battery with high energy density and long cycle life, state-of-the art of cathode material with low-toxic and environment-friendly is urgent. In virtue of the stable discharge potential and high energy density, silver (Ag) presents a huge perspective in the field of aqueous batteries. Herein, the paradigm of a novel core-shell Ag@Cu structure on situ Cu porous nanowire arrays skeleton (Ag@Cu NWAs) is designed as the efficient cathode of an aqueous rechargeable battery...

BACKGROUND: Black men are more likely to die of prostate cancer (PCa) compared with white men. Factors ranging from genetics to neighborhood environment contribute to these disparities. However, unlike genetics, agnostic investigations that identify candidate variables from large-scale data, and that allow for empiric investigations into differential associations between neighborhood and PCa by race/ethnicity, to the authors' knowledge have not been well explored. Thus, herein, the authors built on their previously developed, empiric neighborhood-wide association study (NWAS) in white men and conducted a NWAS in black men to determine whether findings differed by race...

Hybrid Ni3S2-MoS2 NWAs/NF, hybrid Ni3S2-MoS2 nanowire arrays in situ grown on Ni foam via a two-step hydrothermal method, can achieve cathodic current densities of 10 mA cm-2 and 100 mA cm-2 at overpotentials of 99 mV and 260 mV in 1.0 M KOH and 111 mV and 194 mV in 0.5 M H2SO4, respectively. It still needs an overpotential of 103 mV at 10 mA cm-2 in 0.1 M PBS. This work opens a new avenue for designing heterogeneous active electrocatalysts for energy conversion and storage.

Rational construction of MnCo2 O4 -based core-shell nanomaterials with distinctive and desirable architectures possesses great potential in the advanced electrode material of high-performance supercapacitors. Here, a new class of hierarchical core-shell nanowire arrays (NWAs) with a shell of NiWO4 nanoparticles and a core of MnCo2 O4 nanowires is reported, which can significantly improve the electrochemical energy storage properties of supercapacitors. The unique core-shell structure endows the MnCo2 O4 @NiWO4 NWAs electrode with a high areal specific capacitance of 5...

Several clade B New World arenaviruses (NWAs) can cause severe and often fatal hemorrhagic fever, for which preventive and therapeutic measures are severely limited. These NWAs use human transferrin receptor 1 (hTfR1) as a host cell receptor for virus entry. The most prevalent of the pathogenic NWAs is Junín virus (JUNV), the etiological agent of Argentine hemorrhagic fever. Small animal models of JUNV infection are limited because most laboratory rodent species are refractory to disease. Only guinea pigs are known to develop disease following JUNV infection, but the underlying mechanisms are not well characterized...

GaN has opened interesting prospects in application of spectrum-tunable solid-state devices with a function of photoelectric conversion. Similarly, single nanowires or nanowire arrays (NWAs) proceed to exhibit good photon absorbance and photoemission characteristics as vacuum devices based on external photoelectric effect. However, the collection of photoelectrons emitting from nanowire surface becomes the the greatest impediment for GaN NWAs photocathode to step forward. In this study, the field-assisted GaN NWAs photocathode is proposed...

Coupling semiconducting metal-organic frameworks (MOFs) with metal oxide (MO) semiconductor nanowires is an efficient solution to tune the photoelectric properties of both the parties. In this report, we demonstrate a facile surfactant-free growth strategy for modification of zinc oxide (ZnO) single-crystal nanowire arrays (NWAs) with the MOF zinc glycolate (noted as Zn-GA) that contains an embedded continuous 3D Zn-O network. Due to the structural resemblance of the Zn-O network between Zn-GA and ZnO, the prepared ZnO@Zn-GA nanowires present a tight contact at the core-shell interface in a partially epitaxial manner, and the loading amount of Zn-GA can be well controlled in the synthetic process...

Electrochemical performances of lithium-ion batteries depend strongly on the micro-nanostructures of active materials as well as electrode configurations. A reasonable design of both active materials and electrode configuration is of great importance to improving the electrochemical properties of the batteries. Here, we present the preparation and electrochemical properties of mesoporous Ni-Mn-Co-O oxide (NMCO) nanowire arrays (NWAs) directly grown on Cu substrates, which can be used as an integrated electrode for lithium-ion batteries...

High-performance fiber-shaped energy-storage devices are indispensable for the development of portable and wearable electronics. Composite pseudocapacitance materials with hierarchical core-shell heterostructures hold great potential for the fabrication of high-performance asymmetric supercapacitors (ASCs). However, few reports concerning the assembly of fiber-shaped ASCs (FASCs) using cathode/anode materials with all hierarchical core-shell heterostructures are available. Here, cobalt-nickel-oxide@nickel hydroxide nanowire arrays (NWAs) and titanium nitride@vanadium nitride NWAs are constructed skillfully with all hierarchical core-shell heterostructures directly grown on carbon nanotube fibers and are shown to exhibit ultrahigh capacity and specific capacitance, respectively...

InGaN/GaN nanowire arrays (NWA) exhibit efficient photoluminescence (PL) in the green spectral range, which extends to temperatures well beyond 200 °C. Previous work has shown that their PL is effectively quenched when oxidizing gas species such as O2 , NO2 , and O3 abound in the ambient air. In the present work we extend our investigations to reducing gas species, in particular to alcohols and aliphatic hydrocarbons with C1 to C3 chain lengths. We find that these species give rise to an enhancing PL response which can only be observed when the NWAs are operated at elevated temperature and in reactive synthetic air backgrounds...

Cathode photoelectrochemical immunoassay usually shows better anti-interference capacity toward real samples than anode photoelectrochemical immunoassay. However, its poor photocurrent response has greatly restricted the detection sensitivity. Herein, a promising ultrasensitive cathode photoelectrochemical immunoassay was developed based on TiO2 photoanode-enhanced 3D Cu2 O nanowire array (NWA) photocathode, and coupled with signal amplification by horseradish peroxidase (HRP)-induced biocatalytic precipitation (BCP)...

Cerium-based redox flow batteries (RFBs) are very attractive for highly efficient energy storage applications with industrial-scale storage capacity. However, the development of active, stable, and earth-abundant catalysts for cerium redox reactions with sluggish kinetics remains a major challenge. Herein, for the first time, two-dimensional (2D) nanostructured architectures were used to design and fabricate efficient and stable electrocatalysts from earth-abundant components toward the Ce(iv)/Ce(iii) redox reaction...