Fear of COVID-19 and the career maturity of Chinese international high school students: The mediating effect of the intolerance of uncertainty.

This study examined the influencing mechanism underlying the relationship between the fear of COVID-19 and Chinese international high school students' career maturity by investigating the mediating role of the intolerance of uncertainty. The results indicated that the fear of COVID-19 and the intolerance of uncertainty are negatively associated with international high school students' career maturity. Moreover, intolerance of uncertainty plays a mediating role in the relationship between the fear of COVID-19 and career maturity. The findings contribute to the literature on mental health and have important practical implications for international high school students' mental health and career development.

"Finding the Way in the Dark"- Working experience of specific-duty-post nurses in a nurse-led in-hospital pulmonary rehabilitation program: A qualitative study.

BACKGROUND: The globally low access to pulmonary rehabilitation can be attributed to the shortage of competent professionals. Setting up specific-duty-post nurses in pulmonary rehabilitation is a novel attempt to solve it. However, their work experience in this position has not been examined. OBJECTIVES: To describe the working experience of special-duty-post pulmonary rehabilitation nurses to improve the efficiency of this mode and provide guidance for management hospitals contemplating setting up and optimizing this position. METHODS: A descriptive phenomenology qualitative approach with semi-structured in-depth interviews was adopted. RESULTS: Fourteen special-duty-post pulmonary rehabilitation nurses were recruited by purposive and snowball sampling from May to July 2021. Four main themes emerged: finding the way in the dark, meeting qualifications and requirements, seeking independence, and anticipating better development. The lack of relevant standards, inadequate support, and variation in chronic respiratory diseases had made them felt like they were finding their way in the dark. As a result of meeting new requirements and qualifications, they experienced role transition shock. Moreover, they were seeking a clear role boundary and independence to foster their sense of belonging. They suggested ways that future management and policies could nurture them to invest more in pulmonary rehabilitation development. CONCLUSION: Developing detailed working standards before work begins and providing adequate support, especially from pulmonologists was key. Compared to a clinical position, this position requires a high level of specialty knowledge, communication skills, self-learning, innovative ability, decision-making, and resilience. Special-duty-post pulmonary rehabilitation nurses suggested ways that tailored management based on the identified factors could counteract their transition shock. A clear role boundary and independence help foster belongingness. To maximize effectiveness and overcome challenges requires identifying obstacles to success, initiating strategies to overcome these and ongoing efforts to promote interdisciplinary support of the role.

Impact of Dying Neonates on Doctors' and Nurses' Personhood: A Systematic Scoping Review.

CONTEXT: Caring for dying neonates is distressing for healthcare professionals (HCP)s. Yet, the extent of these effects is poorly understood, compromising support of HCPs. To better understand and support HCPs, a systematic scoping review (SSR) of prevailing data is proposed. OBJECTIVES: In mapping prevailing data on the impact of caring for dying neonates on HCPs, an SSR proffers new insights on changes to their beliefs, values, coping, actions, relationships and self-concepts of personhood. METHODS: Krishna's Systematic Evidenced Based Approach (SEBA) supports a robust, reproducible review whilst its constructivist approach and relativist lens effectively contends with diverse data sources, facilitating a holistic study. RESULTS: A total of 9826 abstracts were reviewed and 69 articles were included. Thematic and content analysis were used simultanously. The four categories drawn from the Ring Theory of Personhood (RToP) complements the four themes identified: Emotional and Physical Difficulties, Coping Mechanisms, Conflict and Recommendations. CONCLUSION: In highlighting significant longitudinal effects upon all aspects of their lives, this SSR in SEBA reveals a critical need for timely, appropriate and personalized support. We recommend adapting the RToP as an assessment tool to identify and evaluate the needs of these HCPs. It may also be used to structure a holistic support mechanism. Future studies are required to validate its use and appraise other aspects of support available for HCPs.

Parental bereavement - impact of death of neonates and children under 12 years on personhood of parents: a systematic scoping review.

BACKGROUND: Losing a child tragically impacts the well-being and functioning of parents. With these effects extending beyond emotional, physical morbidity and compromising self-perceptions, appropriate, longitudinal, timely and personalised support is key to effective care of bereaved parents. However, in the absence of a comprehensive understanding of parental bereavement, effective support of bereaved parents remains suboptimal. To address this gap, we scrutinise prevailing data on the effects of a child's death, aged 0-12 years, through the lens of the Ring Theory of Personhood (RToP). METHODS: To study prevailing accounts of bereaved parents following the death of a child, we adopt Krishna's Systematic Evidence Based Approach (SEBA) to structure our Systematic Scoping Review (SSR in SEBA). RESULTS: Three thousand seventy-four abstracts were reviewed, 160 full text articles were evaluated, and 111 articles were included and analysed using thematic and content analysis. Four themes/categories were identified relating to the four rings of the RToP. Findings reveal that static concepts of protective and risk factors for grief are misplaced and that the support of healthcare professionals is key to assisting bereaved parents. CONCLUSION: In the absence of consistent support of bereaved parents, this study highlights the need for effective training of healthcare professionals, beginning with an appreciation that every aspect of an individual parent's personhood is impacted by the loss of their child. Acknowledging grief as a complex, evolving and personalised process subjected to parental characteristics, settings, context and available support, this SSR in SEBA calls attention to effective nurturing of the relationship between parents and healthcare professionals, and suggests use of the RToP to assess and direct personalised, timely, specific support of parents in evolving conditions. We believe the findings of this review also call for further studies to support healthcare professionals as they journey with bereaved parents.

Observations on the Ultrastructure of Antennal Sensilla of Adult Glenea cantor (Cerambycidae: Lamiinae).

The external morphology and distribution of antennal sensilla of Glenea cantor Fabricius were studied with scanning electron microscopy. The antennae of G. cantor were observed to be filiform, consisting of scape, pedicel, and flagellum (nine flagellomeres). Four distinct types of sensory receptors were observed, including sensilla chaetica, sensilla trichodea, sensilla basiconica, and Böhm bristles. Three morphological subtypes of sensilla chaetica were found on the antennae, and sensilla trichodea were also categorized into three morphological subtypes. Sensilla basiconica was grouped into two morphological subtypes that were found on subsegments F2-F9 of the flagellum, and Böhm bristles were only found at the intersegmental joints between the scape and the head and between the scape and the pedicel. The antennae of male and female adults were similar in shape, length, and diameter. However, the length, diameter, distribution, and number of each of the four distinct types of sensilla on the males were significantly different from those on females. The types, lengths, diameters, numbers, and distributions of these sensilla were described, and their possible functions were also discussed. The results indicated that the base and end of an antennal segment have a similar sensillum density, but the middle section sensor density is significantly greater, especially for olfactory and gustatory sensilla, possibly because the joints are more involved in mechanical sensing. The density of sensors is closely related to its sensing function; so, future studies on the biology of olfaction and sexual communication in G. cantor will be facilitated by these observations.

Receiver performance characteristics of single-photon lidar in a strong background environment.

The detection performance of the single-photon lidar (SPL) receiver is investigated as a function of optical attenuation and superconducting nanowire single-photon detector (SNSPD) parameters (detection efficiency and dead time) in a strong background environment. With detection theory, it is found that there is optimal attenuation to make detection probability the highest at a given false alarm probability, namely, optimal working conditions. Optical attenuation is proved to be required only when the background photon number is higher than a certain value; otherwise, it is not necessary. Furthermore, the performance of a Geiger-mode avalanche photodiode (GMAPD) is compared. Under optimized working conditions, the SNSPD-based receiver exhibits higher detection performance in a strong background environment than that of the GMAPD-based receiver due to shorter dead time, while in a low-noise environment, attenuation is not essential, and detection efficiency becomes the dominant factor. The theoretical result gives a reference for the SPL receiver system design to achieve optimal detection performance.

Ag-Deposited Electrospun SrTiO3 Nanofiber with Enhanced Photocatalytic Activity for Degradation of Methylene Orange.

Perovskite SrTiO3 nanofibers were successfully fabricated using a facile electrospinning method followed by calcination in air. The structures, morphologies, and photocatalytic performance of the one-dimensional SrTiO3 nanofibers were determined through X-ray diffraction, UV-visible spectroscopy, scanning electron microscopy, and degradation of organic dye under light irradiation. The nanofibrous SrTiO3 exhibited enhanced photocatalytic activity after photodeposition of Ag on its surface to degrade methylene orange dye. The nanofibrous structure of Ag-deposited SrTiO3 was well preserved after photocatalytic degradation, revealing that the electrospun SrTiO3 nanofiber exhibited high stability. The improved photocatalytic activity can be attributed to the extension of the visible light absorption edge and efficient charge separation on the Ag-deposited SrTiO3 nanofibers.

Plasmonic Enhanced Performance of an Infrared Detector Based on Carbon Nanotube Films.

The carbon nanotube (CNT) has been proved to be a promising material in infrared detection, due to its many advantages of high mobility, strong infrared light absorption, and carrier collection efficiency. However, the absorption restriction from the single layer limits its effective utilization of incident light. In this paper, we introduce a plasmonic electrode structure in a CNT thin-film photodetector based on random deposited high-purity semiconducting CNTs, which can collect photoinduced carriers effectively and enhance light absorption at the same time. The largest enhancement of photocurrents can be achieved at 1650 nm wavelength with suitable plasmonic structure size. Especially, we further discuss the influence of plasmonic structures on the performance of devices. We demonstrate that the best performance improvement of the carbon nanotube detector with plasmonic structure can be enhanced by 13.7 times for photocurrent mode and 5.62 times for photovoltage mode compared to those devices without structure at 1650 nm resonant wavelength. At last, the plasmonic structures are applied on tandem photodetectors with nine virtual contacts, and both the photocurrent and photovoltage are increased. The application of plasmonic electrodes can improve detector performance and retain compact device structures, which shows great potential for optimizing infrared detectors based on nanomaterials.

Microcavity-Integrated Carbon Nanotube Photodetectors.

Carbon nanotubes (CNTs) are considered to be highly promising nanomaterials for multiwavelength, room-temperature infrared detection applications. Here, we demonstrate a single-tube diode photodetector monolithically integrated with a Fabry-Pérot microcavity. A ∼6-fold enhanced optical absorption can be achieved, because of the confined effect of the designed optical mode. Furthermore, taking advantage of Van-Hove-singularity band structures in CNTs, we open the possibility of developing chirality-specific (n,m) CNT-film-based signal detectors. Utilizing a concept of the "resonance and off-resonance" cavity, we achieved cavity-integrated chirality-sorted CNT-film detectors working at zero bias and resonance-allowed mode, for specific target signal detection. The detectors exhibited a higher suppression ratio until a power density of 0.07 W cm(-2) and photocurrent of 5 pA, and the spectral full width at half-maximum is ∼33 nm at a signal wavelength of 1200 nm. Further, with multiple array detectors aiming at different target signals integrated on a chip, a multiwavelength signal detector system can be expected to have applications in the fields of monitoring, biosensing, color imaging, signal capture, and on-chip or space information transfers. The approach can also bring other nanomaterials into on-chip or information optoelectronics, regardless of the available doping polarity.

How good can CVD-grown monolayer graphene be?

Chemical vapor deposition (CVD) is considered the most promising method for pushing graphene into commercial products. However, CVD grown graphene is usually of low quality. In this work we explore how good can CVD-derived monolayer graphene be. Through the combinational optimization of the main processes of growth, transfer, device fabrication and measurements, we show that the optimized CVD graphene can present performance comparable to mechanical exfoliated ones: in particular, high carrier mobility at room temperature on the Si/SiO2 substrate, perfect electron-hole symmetry and excellent uniformity (the mobility ranged from 5000 to 12,000 cm(2) V(-1) s(-1) with an average mobility of ∼ 8800 cm(2) V(-1) s(-1) and 50% were higher than 10,000 cm(2) V(-1) s(-1)). In addition we found that the adsorbed oxygen and water molecules on graphene lead to p-type doping in graphene, and transferred charges bring charged impurity scattering to the transporting carriers in the graphene channel. It is therefore necessary to carry out electrical measurements under vacuum to obtain high intrinsic carrier mobility CVD grown graphene.

Growth of semiconducting single-walled carbon nanotubes by using ceria as catalyst supports.

The growth of semiconducting single-walled carbon nanotubes (s-SWNTs) on flat substrates is essential for the application of SWNTs in electronic and optoelectronic devices. We developed a flexible strategy to selectively grow s-SWNTs on silicon substrates using a ceria-supported iron or cobalt catalysts. Ceria, which stores active oxygen, plays a crucial role in the selective growth process by inhibiting the formation of metallic SWNTs via oxidation. The so-produced ultralong s-SWNT arrays are immediately ready for building field effect transistors.