In order to reduce the vibration fatigue test time of aeronautical engineering components made of aluminum-alloy, a random vibration fatigue acceleration model under narrow-band excitation is proposed in this paper. A three-parameter S- N curve is adopted to consider the effect of small stress response, while a scale factor α is introduced to consider the effect of stress distribution. The random vibration fatigue tests of 2024-T3 and 7075-T6 aluminum-alloy specimens with elliptical holes are performed, where the vibration fatigue lives of load spectra with the same bandwidth and different excitation acceleration levels are obtained. The test results show that the proposed model is in sound agreement with the test results.

Hydralazine can cause interstitial lung disease, pauci-immune glomerulonephritis and hypocomplementemia. Hydralazine- induced ANCA- associated vasculitis and hydralazine-induced lupus are rare. We describe a case of hydralazine-associated vasculitis with rapidly progressive glomerulonephritis and highlight the importance of early diagnosis and treatment as it can be rapidly progressive and fatal.

We present a 54-year-old male with a gastric mass with pre-operative biopsy being consistent with a gastrointestinal stromal tumor. After surgical resection, final pathology revealed a plexiform fibromyxoma. One must consider the histopathological and gross features of plexiform fibromyxoma to distinguish it from other mesenchymal tumors of the GI tract.

Intraosseous lipoma is a rare benign lesion of bone. We present a case of an intraosseous lipoma of the calcaneum detected as an incidental finding, as well-delineated osteolytic lesion with central area of calcification, on plain radiography. Diagnosis can be done with a computed tomography scan and/or magnetic resonance imaging.

Fungal bioprosthetic valve endocarditis is regarded as a rare, fatal disease. Severe aortic valve stenosis due to vegetation in bioprosthetic valves was also rare. Because biofilm formation is a factor related to persistent infection, the best outcomes for endocarditis are achieved in patients treated surgically with concomitant antifungal medications.

We present a family in which the recent birth of a baby resulted in the establishment of a cytogenetic diagnosis of a different family member whose initial evaluation and clinical diagnosis had occurred three decades earlier. The new genomic findings have profound implications for other family members.

In this paper, we consider the initial boundary value problem for a pseudo-parabolic Kirchhoff equation with logarithmic nonlinearity. Using the potential well method, we obtain a threshold result of global existence and finite-time blow-up for the weak solutions with initial energy J ( u 0 ) ≤ d . When the initial energy J ( u 0 ) > d , we find another criterion for the vanishing solution and blow-up solution. We also establish the decay rate of the global solution and estimate the life span of the blow-up solution. Meanwhile, we study the existence of the ground state solution to the corresponding stationary problem.

1. Our understanding of how bees (Apoidea) use temperate forests is largely limited to sampling the understory and forest floor. Studies over the last decade have demonstrated that bee communities are vertically stratified within forests, yet the ecology of bee assemblages immediately above the canopy, the canopy-aerosphere interface, remains unexplored. 2. We sampled and compared bee communities above the canopy of a temperate forest to the understory (1 m), midstory (10 m), and canopy (20 m) on the campus of the University of Massachusetts, in Amherst, Massachusetts, USA from April – August, 2021. 3. Overall, we found that assemblages above the canopy had more bees than in the understory, were distinct in composition from all other strata, and included the greatest proportion of unique species. Bee abundance and species richness were highest in the understory throughout the spring (April and May) and decreased as the season progressed, while bee abundance and species richness at higher strata increased into the summer months. We also found that bees with preferences to nest in moist and rotting wood were largely restricted to canopy and midstory strata. 4. We conclude that bee assemblages occupying the space above the forest canopy are abundant and diverse, and their unique composition suggests that this canopy-aerosphere interface plays an additional role in the bee community of temperate forests. Alternatively, our findings question how forest bee communities should be defined while highlighting the need for research on fundamental processes governing species stratification in and above the canopy.

Mammals play a role in environmental engineering. Outside of protected areas, Ethiopia’s mammalian supply is rapidly dwindling, and there is a scarcity of data on mammalian diversity and ecology. As a result, from June 2020 to February 2021, a study was conducted in Arjo Diga Forest to determine the species composition, distribution, relative abundance, and threats of large and medium wild mammals. Using transect lines, survey techniques were used to record mammals from four habitat types, Eighty people participated in a questionnaire survey to identify the current threatening factors. A total of 763 individuals were compiled belonging to 19 mammalian species, 6 orders, and 12 families. Papio Anubis (30.3 %) was the most abundant in the research region, followed by Chlorocebus mitts (22%), while Panthera pardus and Panthera Leo were the least, contributing 0.79 % and 0.39 % of the total observation, respectively. There is, however, a significantly varied among habitats (χ2 = 246.4; DF = 18; P < 0.05). Among observed mammals, (n = 433, 56.75%) individuals were recorded in dry season, while (n = 330, 43.25%) individuals were recorded in wet season and abundance of mammals species not significantly between seasons (χ2 = 12.12; DF = 18; P >0.05). The diversity of species varies depending on the stratified habitat types. The Shannon–Wiener Index values, on the other hand, do not differ much between habitat types. The research area’s species diversity was H′ = 2.296, with the highest Simpson Index of diversity (1-D) being (0.8406). Agricultural land expansion, illegal logging, overgrazing, quarry operations, and illegal hunting are all threats to the species that inhabit the study area. A quick national park is required to rescue these species

Understanding the surface chemistry of nanostructured TiO2 has long been a priority to improve photochemical device efficiency. Faceted nanoparticles, characterized by known facets not at thermodynamically ideal ratios, are particularly challenging to model due to the large number of chemical and computational parameters that must be chosen for which there is no experimental guidance. This research supplies a modeling framework for faceted TiO2 nanoparticles that provides rationale for such decisions. By performing full DFT optimization and characterization on a series of inter-related anatase TiO2 nanoparticles displaying {101}, (001), and {010} facets with sizes up to 202 TiO2 units, parameter space is mapped with regard to particle size, shape, defects, and optimization protocol. Specifically, it is shown that pre-optimization is necessary in order to achieve a sufficiently delocalized electronic structure, and the increased reorganization afforded by removing higher coordinated Ti atoms compensates the high formation energy of creating these defects. Furthermore, by characterizing differently shaped nanoparticles with the same number of TiO2 units, this research provides direct observation of shape effects on nanoparticles.

A three-year-old girl with a history of epilepsy seizures was diagnosed with acute lymphoblastic leukemia. A comprehensive genetic study of blast cells led to the discovery of a constitutional deletion of the PCDH19 gene. This description underlines how modern techniques of molecular investigations in hematological disorders may lead to unexpected findings.

Vulnerable patient populations have seen decreased rates of vaccination against SARS-CoV2 (COVID-19) due to hesitancies and distrust, magnified by a paucity of data for certain populations. The rates of COVID-19 vaccination in children with Sickle Cell Disease (SCD) remains low despite the risk for severe complications, resulting in continued infections and hospitalizations from COVID-19. We sought to describe vaccine reactions including vaso-occlusive crises, emergency department visits, and hospitalizations in children with SCD. Our findings will start to provide the necessary vaccine side effect data to inform patients, caregivers, and clinicians considering the COVID-19 primary vaccination series.

Background and Purpose Uncontrollable inflammation has been the leading cause of mortality in many acute respiratory infections, including influenza. In light of the current COVID-19 pandemic, it is vital to develop valid therapeutics or supplements that are effective in suppressing lung inflammation. Feruloylated oligosaccharides (FOs) is a phytochemical constituent that exerts anti-inflammatory activities. Experimental Approach We established the influenza-induced lung inflammation model by infecting C57BL/6J mice or MAVS knockout (Mavstm1Zjc/J) mice with influenza A virus (H1N1). Lung index, histology analysis, hemagglutination inhibition assay as well as neuraminidase inhibition assay were performed to evaluate the therapeutic effect of FA and FOs. PCR, western blot, docking simulation and metabolomics were done to elucidate the mechanism of FOs anti-inflammatory function in lung. Key Results Herein, we found that oral administration of FOs moderately inhibited H1N1 virus infection and reduced lung inflammation in influenza-infected mice by decreasing a wide spectrum of cytokines in the lungs. FOs also suppressed transduction of the RIG-I/MAVS/TRAF3 signaling pathway and lowered the expression of NF-κB. Moreover, we found that the anti-inflammatory function of FOs against influenza depends on MAVS, which is closely associated with activation of the downstream signaling cascades and the eventual production of pro-inflammatory cytokines and type I interferons. Conclusions and Implications In conclusion, we demonstrated that FOs is an effective anti-inflammatory agent for treating the lung inflammation caused by influenza. Such therapeutic effect was likely mediated by RIG-I/MAVS/TRAF signaling.

After the short-term administration of 20mg/d prednisolone (orally) in a previously non-steroid-treated patient with iron storage disease, the steroid, which is omnipresent in clinical practice, led to paradoxical foudroyant symptoms, but above all to a reduction of 80% in the extreme narcoleptic symptomatology, not however in the cataplectic component. Masked primary adrenal insufficiency was revealed. An improvement in narcoleptic symptoms of about 50% was also maintained under oral hydrocortisone-only substitution therapy.

The presence of unintended chemicals in food products and supplements may impact consumers’ health negatively. Mineral oil hydrocarbons (MOHs) in particular are gaining research attention and have been detected and quantified in food products and supplements in the past. The aim of this study was to analyze encapsulated, and bulk minimally processed marine oils for MOHs and to evaluate the probable sources of these compounds. Hydrocarbons in supplement oils were extracted via saponification and analyzed by gas chromatography with both flame ionization and mass spectral detection. While no mineral oil aromatic hydrocarbons (MOAH) were detected in any sample, the analysis revealed the presence of mineral oil saturated hydrocarbons (MOSH) in 9 out of 10 minimally processed encapsulated oils. The MOSH appeared on the chromatograms as an unresolved complex mixture (UCM) with concentrations ranging from 376 ± 49 to 3831 ± 414 mg kg-1. These values are well below the maximum allowable limits for MOH in encapsulated products set by the United States Food and Drug Administration. Therefore, all the tested products are compliant with the US regulations. Moreso, the bulk oil samples did not contain detectable levels of MOH. This study suggests that MOH accumulation in encapsulated products is likely due to the use of lubricants during encapsulation, rather than environmental sources such as oil spills since MOAH that are characteristic of weathered petroleum products were not identified in the UCM.

Objective To compare the associations between different modes of delivery and the pelvic floor function of primiparous women at early postpartum through pelvic floor muscle surface electromyography（sEMG）. Design Retrospective observational study. Population A total of 3638 primiparas who experienced singleton delivery were selected as the research objects. Methods There were 1469 cases of cesarean section delivery (CD) and 2169 cases of vaginal delivery (VD). Furthermore, the vaginal delivery group were separated into four subgroups. The pelvic floor sEMG indexes of the subjects were analyzed at 6–8 weeks postpartum. Main outcome measures The pelvic floor sEMG were compared between CD and VD，and the four vaginal delivery subgroups. A modified Glazer protocol was used to analyze the pelvic floor sEMG value. Results The results showed that the average peak amplitude of phasic (flick) contractions and the average mean amplitude of tonic contractions were both significantly higher in CD than in VD (P < 0.01). In contrast, CD had less the mean amplitude variability of tonic contractions than VD (P < 0.01). The average peak amplitude of phasic (flick) contractions and the average mean amplitude of tonic contractions in forceps delivery group was statistically lower than the other vaginal delivery groups (P<0.05). The mean amplitude variability of tonic contractions was larger in forceps delivery group than group A, B. (P <0.01). Conclusion There is a clear link between mode of delivery and pelvic floor sEMG at 6-8 weeks postpartum in primiparas. Keywords pelvic floor dysfunction；pelvic floor muscle surface electromyography；postpartum；delivery mode；Glazer protocol

Bioactive glass, as an ideal biomaterial, is not suitable for load-bearing parts because of its high brittleness and has been applied for surface modification to manufacture composite materials. Titanium alloy is bio-inert and prone to loosening, which leads to implant failure and infection after implantology. Applying bioactive glass to titanium and its alloys in the form of coating combines titanium metal's superior mechanical properties and bioglass's good biological properties. In this review, the authors searched and screened four databases, including Web of Science, PubMed, Embase, and Scopus, for articles published since 2013, finally, 49 articles were included to investigate the biological properties of bioactive glass coatings on titanium and its alloys. From the perspective of methodology, this review aims to summarize the methodologies performed for detecting the biological properties including biocompatibility and bioactivity of coatings were also concluded, covering the experimental process and principle of the included studies, therefore, providing learning materials for new researchers in material science and biotechnology.

Abstract Objectives To assess the prevalence of anal incontinence (AI) two years after diagnosis of obstetric anal sphincter rupture (OASR), relate the degree of AI to self-reported quality-of-life and identify possible risk factors for AI in this population. Design A cross-sectional study. Setting County of Västerbotten, Sweden. Population All women diagnosed with OASR following vaginal delivery according to the medical records. Methods Questionnaires targeting faecal incontinence and quality-of-life were sent to the women. A reminder was sent after one month. Continuous and categorical data were analysed using Pearson Chi-square and analysis of variance. Main Outcome measures Presence of AI >2 years after the diagnosis of OASR, and health-related quality-of-life (HRQoL). Results Of the cohort of women with OASR, 29.4 % suffered from severe or very severe AI >2 years after delivery. Level of AI was associated with reduced HRQoL, pain, fatigue, anxiety, negative body image, urinary incontinence, embarrassment, and dyspareunia. Induction of labour and BMI > 25 kg/m2 were identified as factors associated with less risk for AI after OASR. Conclusions The results presented clearly stress the need to improve techniques for the repair of OASR as well as careful follow-up of all women with this diagnosis. Psychological consequences and symptoms from the pelvic floor other than AI should be sought and attended.

Viral systems such as wild-type viruses, viral vectors, and virus-like particles are essential components of modern biotechnology and medicine. Despite their importance, the commercial-scale production of viral systems remains highly inefficient for multiple reasons. Computational strategies are a promising avenue for improving process development, optimization, and control, but require a mathematical description of the system. This article reviews mechanistic modeling strategies for the production of viral particles, both at the cellular and bioreactor scales. In many cases, techniques and models from adjacent fields such as epidemiology and wild-type viral infection kinetics can be adapted to construct a suitable process model. These process models can then be employed for various purposes such as in-silico testing of novel process operating strategies and/or advanced process control.

Rock-paper-scissors (RPS) dynamics have been shown to affect the evolutionary relationships within populations. These processes are analogous to the ways in which intransitive competition modifies ecological outcomes and the co-existence between species within communities. Here we explore the similarities between rock-paper-scissor dynamics and intransitive competition and how this link opens new avenues of research into eco-evolutionary processes. Intransitivity can drive the stable coexistence of phenotypes within species, as well as the diversity of species within communities. In addition, the links between these dynamics highlight possible feedback mechanisms that might operate across these evolutionary and ecological scales. Using simulations, we show that greater intraspecific intransitivity within a population can lead greater levels of intransitivity at the community-level, with direct implications for community diversity and stability. As such, RPS dynamics and intransitivity can serve as an ideal conceptual framework to understand the feedback mechanisms that drive diversity across evolutionary and ecological scales.

We discuss a study that aimed to understand the genesis and inflow conditions of abstracted water by intake with induced infiltration located at a mountain river. A simple approach based on a combination of two research techniques was used: two-component water mixing modelling and studies of the variability of concentrations of environmental tracers in a dynamic test. This approach is versatile, easy to apply and modify, and can be good method for controlling surface/groundwater interactions. We used the gas tracers because gas exchange and dissolution of gases in infiltrating rainwater gives it a unique gas signature that is largely retained in groundwater. We focus on understanding river/aquifer interactions at the scale of reach of an intake. To understand these issues, a two-day field hydrogeological experiment based on a pumping test of increasing intensity was conducted. At each pumping stage, groundwater and river samples were collected to determine the concentration of noble gases, CFCs, SF6, stable isotope content, and chemical composition of the water. The study results indicate a short pressure propagation time between the intake and the river, which results in inflow of water already at low water abstract by the intake. Despite limited river water inflow, there was a continuous hydraulic contact river/aquifer, largely independent of changes in pumping intensity. As pumping intensity increased, the river/aquifer hydraulic system tended towards stabilised conditions of mixing and inflow to the intake. In general, a small proportion of river water (up to 26%) was found in the exchange flux between the river and groundwater.

Water bodies such as lakes and reservoirs affect the regional climate by acting as heat sinks and sources through the evaporation of substantial quantities of water over several months of the year. Unfortunately, energy exchange observations between inland water bodies and the atmosphere remain rare in northeastern North America, which has one of the highest densities of lakes in the world. This study helps to fill this gap by analyzing field observations collected from a subarctic hydropower reservoir (50.69°N, 63.24°W) characterized by a mean depth of 44 m and a surface area of 85 km 2. Two eddy covariance (EC) systems, one on a raft and one onshore, were deployed from 27 June 2018 to 12 June 2022. The thermal regime of the reservoir was monitored using vertical chains of thermistors. Results indicate a mean annual evaporation rate of 590 ± 66 mm (~70% of the annual precipitation), with 84% of the evaporation occurring at a high rate from August to freeze-up in late December through episodic pulses. It was difficult to close the energy balance because of the magnitude and the large time lag of the heat storage term. In order to circumvent this problem, we opted to perform calculations for a year that started from the first of March, as the heat storage in the water column was at its lowest at that point and could thus be ignored. From June to December, monthly Bowen ratios increased from near-zero negative values to about 1.5. After September, due to smaller vapor pressure deficits, latent heat fluxes steadily declined until an ice cover sealed up the reservoir. Two opposite diurnal cycles of sensible and latent heat fluxes were revealed during the open water period, with sensible heat fluxes peaking at night and latent heat fluxes peaking in the afternoon.

Parental responses to offspring solicitation differ among species and have major implications for fitness, but the evolutionary drivers of this diversity are poorly studied. Here, we experimentally amplified begging calls at nests of 25 songbird species in tropical and north temperate communities. We analyzed parental provisioning responses using phylogenetic path analysis to test the possible roles of demographic (offspring predation or adult survival rates), ecological (food predictability) or physiological (offspring energy need) traits in the evolution of parental responsiveness to begging. Species with smaller body mass, more unpredictable food availability, and greater offspring predation rates were more responsive to begging. In contrast, we found little support for direct effects of adult survival on parental responses. Ultimately, the evolution of parental responsiveness to offspring solicitation is strongly related to energetic needs of young and the predation costs of begging.

Heterogeneity among individuals in fitness components is what selection acts upon. Evolutionary theories predict that selection in constant environments acts against such heterogeneity. But observations reveal substantial non-genetic and also non-environmental variability in phenotypes. Here we examine whether there is a relationship between selection pressure and phenotypic variability by analysing structured population models based on data from a large and diverse set of species. Our findings suggest that non-genetic, non-environmental variation is in general neither truly neutral, selected for, or selected against. We find much variation among species and populations within species, with mean patterns suggesting nearly neutral evolution of life course variability. Populations that show greater diversity of life courses do not show, in general, increased or decreased population growth rates. Our analysis suggests we are only at the beginning in understanding the evolution and maintenance of non-genetic non environmental variation.