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An ultrathin, highly thermally conductive heat spreader has been fabricated by layer-by-layer
stacking of hydroxylated boron nitride nanosheets (HBNNS) for the first time. HBNNS were
prepared by a molten hydroxide-assisted liquid exfoliation from hexagonal boron nitride powder.
The as-prepared heat spreader of HBNNS exhibits a high thermal conductivity of 51.1 W m−1 K−1 along the in-plane direction, and can be further enhanced 14% by annealing for de-hydroxylation.
This heat spreader with 10–30μm in thickness possessed excellent thermal stability with negligible
weight loss at wide temperature range up to 700°C, resulting in promising applications for heat
dissipation in electronic components operated at high working temperature.
This paper is concerned with L 1 -stochastic stability and L 1 -gain performance analysis of a continuous-time positive Markov jump linear system with a time-delay. By constructing a novel linear co-positive stochastic Lyapunov functional based on the positivity of the system, and characterizing the system equation of the mathematical expectation of the markovianized states, some necessary and sufficient delay-dependent conditions for L 1 -stochastic stability and L 1 -gain performance are presented in terms of linear programming. A numerical example is provided for showing the effectiveness of the obtained conditions, especially for exploring and revealing both the negative effect and the positive effect of the time-delay on stochastic stability of the positive Markov jump linear system with a time-delay.
With the combination of experimental and computational approaches, the impact of hydrogenation on the optical, electronic and electrochemical properties of Fe 2 O 3 for water splitting have been studied. Under high pressure, hydrogen incorporation into the Fe 2 O 3 lattice has been achieved, and hydrogen dopants can be released with heat treatment. With H-doping, magnetite Fe 3 O 4 has been found to form at the edge of Fe 2 O 3 nanoparticles. H-incorporation can narrow the band gap by ∼0.4 eV and slightly reduce the overpotential (by 140 mV) for oxygen evolution reaction, but due to the localization of hydrogen (bonded with oxygen), a slightly lower charge carrier density resulted. Computational studies reveal that all of the above changes are essentially related to the local states brought by H-dopants. This study provides an in-depth understanding of the optical, electronic, and catalytic properties of hydrogenated Fe 2 O 3 .
Molecular hydrogen (H2) absorption in the damped Lyman α system at zabs = 2.34 towards quasar SDSS J123437.55+075843.3 is analysed in order to derive 'a constraint on a possible temporal variation of the proton-to-electronmass ratio,μ, over cosmological time-scales. Some 106 H2 and deuterated molecular hydrogen (HD) transitions, covering the range 3290-3726 Å, are analysed with a comprehensive fitting technique, allowing for the inclusion of overlapping lines associated with hydrogen molecules, the atomic hydrogen lines in the Lyman α forest as well as metal lines. The absorption model, based on the most recent and accurate rest wavelength for H2 and HD transitions, delivers a value of Δμ/μ = (19 ± 9stat ± 5syst) × 10-6. An attempt to correct the spectrum for possible long-range wavelength distortions is made, and the uncertainty on the distortion correction is included in the total systematic uncertainty. The present result is an order of magnitude more stringent than a previous measurement from the analysis…
Comorbidities related to diabetes such as chronic wounds can increase the need for surgical procedures, with at least 10% of all patients undergoing surgery having diabetes. Being diagnosed with diabetes can be seen as a risk factor for developing wound healing problems. Discussion: This short report highlights the potential positive influences gained from providing resilience education and self- management education to people with type 2 diabetes, potentially enhancing self-managing abilities and reducing poor wound healing. Summary: Modern wound care practice is centred on symptom reduction and working with pathology; however, working with people to enhance their personal resilience and promoting positive psychological adaptation can impact positively on their mental health.
The life-limiting effects of epilepsy are well documented in the literature, where the management of epilepsy and seizure control relies heavily on the self-management abilities of the individual. The psychosocial impact of epilepsy on the person and their family is profound and has been studied extensively. Interventions such as educational programs and lifestyle management education to improve self-mastery and quality of life in people with epilepsy are not necessarily integrated in standard care practices. The aim of this integrative review was to systematically identify and appraise research that reported findings related to self-management interventions for adults with epilepsy. A search of bibliographic databases was conducted, and a total of n = 14 articles were included in this review. The main finding was that self-management education for adults with epilepsy shows promise to improving knowledge and self-confidence in managing one's own condition including the management of the psychosocial stressor…
No abstract available.
This article reports on the results of a pilot study exploring health-related quality of life and the experience of being resilient in patients who develop acute, non-infected surgical wounds. By investigating this under-researched area of wound management, the project team intended to highlight the aspects of patient empowerment in healing post-surgery, encompassing the physical, social and psychological domains. Participants were recruited from patients who had undergone a surgical procedure resulting in an acute non-infected healing wound, and who met the inclusion criteria of the study. Patients were excluded if they had a chronic wound in addition to their acute surgical wound. Valid scores on the physical health (PCS) and mental health (MCS) domains of the SF-12 could only be obtained from six patients pre-operatively. A further six patients completed the SF12 instrument pre-operatively (five valid sets of scores obtained); these patients did not complete the HADS scale. Paired samples t-tests conducted…
BACKGROUND: Breast reconstruction is safe and improves quality of life. Despite this, many women do not undergo breast reconstruction and the reasons for this are poorly understood. This study aims to identify the factors that influence a woman's decision whether or not to have breast reconstruction and to better understand their attitudes toward reconstruction. METHODOLOGY: An online survey was distributed to breast cancer patients from Breast Cancer Network Australia. Results were tabulated, described qualitatively and analyzed for significance using a multiple logistic regression model. RESULTS: 501 mastectomy patients completed surveys, of which 62% had undergone breast reconstruction. Factors that positively influenced likelihood of reconstruction included lower age, bilateral mastectomy, access to private hospitals, decreased home/work responsibilities, increased level of home support and early discussion of reconstructive options. Most common reasons for avoiding reconstruction included "I don't feel t…
The aim of this project was to review current research regarding postnatal depression in fathers and to present potential screening and referral options. The search was limited to scholarly (peer reviewed) journals and all articles were retrieved with date limits. Initial search parameters were the following: antenatal depression OR pregnancy depression OR postnatal depression OR perinatal depression AND father* OR men OR paternal. The search yielded 311 abstracts returned. With reference to the inclusion criteria and primary and secondary outcomes intended for the focus of this review, N = 63 articles were retrieved and read in full by the researchers. These articles were included in the final integrative review. Depression in fathers following the birth of their child was associated with a personal history of depression and with the existence of depression in their partner during pregnancy and soon after delivery. Based on the review the authors suggest routine screening and assessment of both parents shoul…