The development of Al 12% Si-ZrO 2 composites using the Disintegrated Melt Deposition (DMD) technique, as well as the microstructure and mechanical characteristics of the resulting materials, are the main objectives of this work. The Al-12%Si alloy, which is well-known for its remarkable strength and resistance to corrosion, has potential uses in the shipbuilding and aircraft industries. Zirconia (ZrO 2) is a ceramic substance that can be used for a variety of applications due to its exceptional corrosion resistance and high hardness values. ZrO 2 adds strength and hardness to composite materials while decreasing percentage elongation and facilitating lubrication between the silicon and aluminum elements in the matrix alloy. The specimens with different weight percentages of ZrO 2 were exposed to DMD. They were identified as AS, AS0.5Z, AS1Z, AS1.5Z, AS2Z, AS2.5Z, and AS3Z. The findings showed that the hardness values increased from 59.7 BHN for as cast to 75.2 BHN for 2.5 wt. % ZrO 2, followed by a minor reduction for 3 wt. % ZrO 2. This rise occurred when the weight percentage of ZrO 2 grew from 0 to 3%. Accordingly, the percentage of elongation dropped from 12.3% to 8.5%, and the ultimate tensile strength varied from 239.2 MPa to 281.9 MPa. The ultimate compression strength varied from 313.7 MPa to 375.6 MPa, while the impact energy absorbed increased from 3.6 J to 5.3 J. These results open up new possibilities for the use of aluminum-12% Si-ZrO 2 metal matrix composites (MMC) in aerospace, marine, and automotive components by offering insightful information about how to create MMCs with improved characteristics.

Diffusion-based tractography in the optic nerve requires sampling strategies assisted by anatomical landmark information (regions of interest, ROIs). We aimed to investigate the feasibility of expert-placed, high resolution T1-weighted ROI-data transfer onto lower spatial resolution diffusion-weighted images. Slab volumes from twenty volunteers were acquired and preprocessed including distortion bias correction and artifact reduction. Constrained spherical deconvolution was used to generate a directional diffusion information grid (FOD-model (fibre orientation distribution)). Three neuroradiologists marked landmarks on both diffusion imaging variants and structural datasets. Structural ROI information (volumetric interpolated breath-hold sequence (VIBE)) was respectively registered (linear with 6/12 degrees of freedom (DOF)) onto single-shot (ss-EPI) and readout-segmented (rs-EPI) volumes respectively. All eight ROI/FOD combinations were compared in a targeted tractography task of the optic nerve pathway. Inter-rater reliability for placed ROIs among experts was highest in VIBE images (lower confidence interval 0.84 to 0.97, mean 0.91) and lower in both ss-EPI (0.61 to 0.95, mean 0.79) and rs-EPI (0.59 to 0.86, mean 0.70). Tractography success rate was highest in VIBE-drawn ROIs registered (6-DOF) onto rs-EPI FOD (70.0% over 5%-threshold, capped to failed ratio 39/16) followed by both 12-DOF registered (67.5%; 41/16) and non-registered VIBE (67.5%; 40/23). On ss-EPI FOD, VIBE ROI-datasets obtained fewer streamlines overall with each at 55.0% above 5%-threshold and with lower capped to failed ratio (6-DOF: 35/36; 12-DOF: 34/34, non-registered 33/36). The combination of VIBE-placed ROIs (highest inter-rater reliability) with 6-DOF registration onto rs-EPI targets (best streamline selection performance) is most suitable for white matter template generation required in group-studies.

Objective: The purpose of the current study was to develop a swallowing rehabilitation protocol using the PETTLEP model to support participation of individuals with head and neck cancer while undergoing radiation treatment. Methods: A swallowing rehabilitation protocol combining motor execution and motor imagery was used by twenty participants with head and neck cancer undergoing radiation treatment. The motor imagery components were constructed utilizing the PETTLEP model and its seven elements. Participants self-reported daily completion of the swallowing rehabilitation program and tracked pain in the mouth and throat region weekly. Results: Results noted average weekly participation above 50% and 45% of participants demonstrating strong participation throughout radiation treatment. Statistical significance was documented during participation between the first week and last week of treatment. Average weekly pain ratings throughout the duration of radiation treatment ranged from 1.21 - 5.17. Statistically significant differences were noted between weekly pain ratings. No difference between motor execution and motor imagery was observed for participation, but a significant difference was noted between the two modalities for pain. Conclusions: Our protocol presented a potential framework for incorporating motor imagery into rehabilitation protocols for individuals with dysphagia who are unable to execute movements. Results suggest motor imagery is a promising method to improve participation in swallowing rehabilitation for head and neck cancer patients undergoing radiation therapy.

An efficient copper-catalyzed annulation of enaminones with maleimides has been developed. This reaction provides a practical approach towards the synthesis of various pyrrolo[3,4-e]isoindoles in moderate to good yields. Notable features of the method include the use of a 2-aminopyridine group as a traceless directing group, wide scope of substrates with good functional group compatibility and applicability to gram scale.

A novel process using N-benzylhydroxylamine hydrochloride as a “C1N1 synthon” in [2 + 2 + 1] cyclization for the construction of 1,2,5-trisubstituted imidazoles has been described for the first time. The key to realizing this process lies on capturing arylamines by in situ generated novel acyl ketonitrone intermediates. Subsequent tautomerization activates the α–C(sp3)−H of N-benzylhydroxylamines, thus breaks through its inherent reaction mode and achieves N, α–C site-selective cyclization. Furthermore, this method enables scale-up synthesis and late-stage modification of complex molecules.

A document by Yuan Xu. Click on the document to view its contents.

The synergistic effect between multi-component electrode materials often makes them have better lithium storage performance than single-component electrode materials. Therefore, to enhance surface reaction kinetics and encourage electron transfer, using multi-component anode materials is a useful tactic for achieving high lithium-ion battery performance. In this paper, ZnS/ZnO composites were synthesized by solvothermal sulfidation and calcination using metal-organic frameworks as sacrificial templates. From the point of materials design, both the ZnS and ZnO have high theoretical specific capacities, and the synergistic effect of ZnS and ZnO can promote charge transport. From the perspective of electrode engineering, the loose porous carbon skeleton formed after calcination of metal-organic frameworks can not only improve the conductivity of composite materials, but also facilitate the full penetration of electrolyte, expand the contact area between electrolyte and active material, which are all conducive to improving the lithium storage performance. As expected, ZnS/ZnO anode materials showed ultra-high specific capacity and excellent rate performances. Combining material design and electrode engineering, the paper provides another idea for preparing high performance anode materials for lithium-ion batteries.

Beauveria bassiana, a necrotrophic fungus thriving in diverse ecosystems, predominantly on arthropods, holds significant importance as a biological agent. The escalating relevance of genetic studies on fungi necessitates the development of efficient and robust DNA extraction techniques to ensure the acquisition of high-quality DNA. B. bassiana was cultured to produce either mycelia or blastospores. Six DNA extraction procedures and two pre-treatment conditions were independently adopted to evaluate their efficacy in obtaining high molecular weight, high concentration, and high-quality DNA from both blastospores and mycelia. Quantification of the extracted DNA was achieved through qPCR analysis targeting the single-copy γ-Actin gene, with validation of amplification specificity and determination of amplification efficiency conducted through standardized protocols and standard curve construction. Statistical analysis indicated that, under all conditions, blastospores yielded more promising results. Blastospores exhibited a mean antilog of 5.0344 + 0.20 for DNA copy concentration, surpassing mycelial cells averaging 2.5069 + 0.20. Additionally, blastospores outperformed mycelial cells in DNA quality, as evidenced by their 260/280 and 260/230 ratios (31.5% within the range for blastospores vs. 7.4% for mycelial cells, p-value=0.002). Moreover, blastospores produced higher molecular weight DNA, averaging 10770.5 base pairs compared to mycelial cells at 8139.0 base pairs (p-value <0.001). This study underscores the superiority of DNA extraction from blastospores compared to mycelial cells of B. bassiana. These findings have broader implications for other dimorphic fungi and open new avenues in the realms of molecular biology and microbial ecology, particularly in genetic and evolutionary studies.

Background: The benefit of antibiotic treatment of acute drops in FEV 1 percent predicted (FEV 1pp) has been clearly established, but data from the early 2000’s showed inconsistent treatment. Further, there is no empirical evidence for what magnitude of drop is clinically significant. Methods: We used data from the CF Foundation Patient Registry (CFFPR) from 2016-2019 to determine the association between treatment (any IV antibiotics, only oral or newly prescribed inhaled antibiotics, or no antibiotic therapy) following a decline of ≥5% from baseline FEV 1pp and return to 100% baseline FEV 1pp days using multivariable logistic regression including an interaction between the magnitude of decline and treatment category. Results: Overall, 16,495 PWCF had a decline : 16.5% were treated with IV antibiotics, 25.0% non-IV antibiotics, and 58.5% received no antibiotics. Antibiotic treatment was more likely for those with lower lung function, history of a positive PA culture, older age and larger FEV 1 decline (p<0.001). Treatment with IV antibiotics or oral/inhaled antibiotics was associated with a higher odds of recovery to baseline compared to no treatment across all levels of decline, including declines of 5-10%. Conclusions: A large proportion of acute drops in FEV1 pp continue to be untreated, especially in younger patients and those with higher baseline lung function. Acute drops as small as 5% predicted are less likely to be recovered if antibiotic treatment is not prescribed. These findings suggest the need for more aggressive antimicrobial treatment of acute drops in FEV 1, including those of a magnitude previously believed to be associated with self-recovery.

Alzheimer’s disease (AD) is a neurodegenerative disorder that primarily manifests itself by progressive memory loss and cognitive decline, thus significantly affecting memory functions and quality of life. The canonical amyloid-β hypothesis, while significant, has faced setbacks, highlighting the need to adopt a broader perspective considering the intricate interplay of diverse pathological pathways for effective AD treatments. Sex differences in AD offer valuable insights into a better understanding of its pathophysiology. Fluctuation of the levels of ovarian sex hormones during perimenopause is associated with changes in glucose metabolism, as a possible window of opportunity to further understand the roles of sex steroid hormones and their associated receptors in the pathophysiology of AD. We review these dimensions, emphasizing the potential of estrogen receptors (ER) to reveal mitochondrial functions in the search for further research and therapeutic strategies for AD pharmacotherapy. Understanding and addressing the intricate interactions of mitochondrial dysfunction and estrogen receptors potentially pave the way for more effective approaches to AD therapy.

Introduction: Super-utilization (frequent acute hospital care use or frequent emergency department (ED) utilization and readmissions) describes high rates of emergency department visits and hospital admissions by some individuals. A large empirical literature which has not shown significant improvements over the past 12 years. Reducing healthcare costs per capita have focussed on Super-utilization, system transformation, and care management. The complex dynamics systems driving Super-utilization lack prominence. Aims: The review aims to uncover essential frameworks and articles to interrogate the mindset of Super-utilization and its evolution to illuminate current understandings and prevailing themes. Methods: Utilizing primary articles, search terms were refined iteratively for searches on Super-utilization, Super-utilizer, and Care Management themes. Articles were intentionally chosen to illustrate primary themes. The review included the most recent and relevant articles to provide a narrative of the diverse set of taxonomies related to Super-utilization Findings: Common to all 4 searches were utilization outcome measures. Care Management was the second common theme. Needs were the lowest frequency in Super-utilization 8% compared with Superutilizers 20% and Care Management 24-25% searches. Systematic reviews and key studies demonstrated limited success of care management, including system transformation from health into social care. Centralised policies such as the Triple Aim have inherent polarities. Health services must contain costs and meet felt needs that emerge from under resourced personal journeys and underserved communities. Conclusion: Super-utilization is an expanding concern within academic literature. Efforts to reduce frequent and multi-dimensional acute care presentations using current care models appear ineffective. The predominant focus on utilization and costs, wedded to a care management model, has diverted attention from taking both a more needs-centred and a broader complex systems perspective on Super-utilization. Distributive justice asks whether social funding should be increased in preference to expanding current health spending.

Saliva has emerged as a promising diagnostic resource due to its accessibility, non-invasiveness, and repeatability, enabling early disease detection and timely intervention. However, current studies often overlook the distinction between whole saliva (WS) and cell-free saliva (CFS). This study aims to compare the proteomic profiles of WS and CFS, both with and without low-abundance proteins enrichment using nanoparticles, employing DIA-MS technology. Our findings reveal a substantial enhancement in the detectability of low-abundance proteins in saliva with utilization of nanoparticles, enabling identification of 12%-15% low-abundance proteins previously undetectable in WS or CFS. In total, 3817 saliva proteins were identified, with 3413 found in WS and 2340 in CFS. More interestingly, we found that it wasn’t the similarity of the samples that did the clustering, but rather it depended more on the different detection methods and sample types. And the predominant functions of the identified proteins in WS were related to oxidative phosphorylation and neurodegenerations, whereas those in CFS were primarily associated with nitrogen and glycosaminoglycan metabolism. And both exhibited functions in immune response and proteasome. This study represents the first comparison of WS and CFS, providing valuable experimental evidence for guiding the selection of research subjects in future salivomics studies.

Flow of a fluid past a body is a very complicated phenomenon. Computational fluid dynamics is used for studying the characteristics of flow past an array of hemispherical protrusions that is disposed on the wall surfaces of a millisecond microchannel reactor. Protrusions can be used to improve the transport processes involved, but the causes of the phenomena are still incompletely understood. Parametric analyses are performed under different sets of circumstances to delineate the role of geometric features and operation conditions in reactor performance. Dimensionless quantities are used to simplify the characterization of the reactor system with multiple interacting transport phenomena. The mechanisms involved in the intensified processes are analysed, and performance improvement recommendations are presented. The results indicate that the protruded reactor behaves effectively and good yields can be obtained with only milliseconds residence of the mixtures within the channels. The reactor offers the unique advantage for hydrogen production from methanol in that process intensification is realized while preserving the energy balance between the exothermic and endothermic processes. However, the flow rates must be adjusted as needed to maximize production of hydrogen and minimize pressure drops. The momentum diffusivity is more dominant around the protrusion regions than in the other regions. The thermal diffusivity is more dominant in the protruded channels than in the flat channels. The results have implications for hydrogen production and beyond for the study of transport phenomena in microchemical systems.Keywords: Hemispherical protrusions; Fuel cells; Heat transfer; Microchannel reactors; Endothermic reactions; Mass transfer

Purpose: Traumatic brain injury (TBI), including pediatric abusive head trauma (AHT), is the leading cause of death and disability in children and young adults worldwide. The current understanding of trauma-induced molecular changes in the brain of human subjects with intracranial haemorrhage (ICH) remains inadequate and requires further investigation to improve the outcome and management of TBI in the clinic. Calcium-mediated damage at the site of brain injury has been shown to activate several catalytic enzymes. Experimental design: Serine hydrolases (SHs) are major catalytic enzymes involved in the biochemical pathways of blood coagulation, systemic inflammation and neuronal signaling. Here we investigated activity-based protein profiling (ABPP) by measuring the activity status of SH enzymes in the serum of infants with severe ICH as a consequence of AHT or atraumatic infants who died of sudden infant death syndrome (SIDS). Results: Our proof-of-principle study revealed significantly reduced physiological activity of dozens of metabolic SHs in the serum of infants with severe AHT compared to the SIDS group, with some of the enzymes being related to neurodevelopment and basic brain metabolism.

A document by J. Josuva. Click on the document to view its contents.

Changes in rainfall patterns due to climate change may accelerate the runoff of sulfur (S) and nitrogen (N), which are anthropogenically emitted as air pollutants and deposited and accumulated in forest soils. In this study, intensive observations were conducted in a forested catchment on the Sea of Japan side to clarify changes in stream water quality and runoff processes during rainfall events. The pH, electrical conductivity, and sulfate (SO 4 2−) concentration in the stream water decreased with increasing flow rate, whereas the nitrate (NO 3 −) concentration increased. The SO 4 2− concentration was negatively correlated with the flow rate, and the NO 3 − concentration was positively correlated with the cumulative precipitation amount of each event and remarkably increased when it exceeded 10 mm. Hydrograph separations using the water isotopic parameter (deuterium excess, d-excess = δ 2H – 8 × δ 18O) showed that most of the stream flow during the rain events was derived from pre-storm water, whereas the portion derived from rainwater increased at rainfall intensities stronger than 10 mm h −1. The S isotope ratio (δ 34S) in the stream water fluctuated minimally compared to the d-excess value during rainfall events, suggesting relatively minor contributions of precipitation SO 4 2− to stream water via direct inflow. The SO 4 2− well homogenized in soil layers mainly contributed to the discharge during the rainfall events. Future climate change may further accelerate S and N runoff from forest catchments and disrupt material cycles in the ecosystem if warming causes more intense rainfall.

The GPT-4 version was officially released in 2023, and generative models are also developing rapidly with the development of artificial intelligence technology. However, with the extensive use of generative models, people have found that the output of them are unreliable. The design capabilities of these generative models need to be further explored. This study aims to evaluate the design capabilities of three generative models in the field of illustration design. Employing a questionnaire survey methodology, we analyzed the collected data using the Wilcoxon signed-rank test. Our focus was to assess three generative models in illustration design, specifically examining their capabilities in theme matching, color matching, artistic style, detail performance, creativity, and overall impression, and comparing these to the levels achieved by human designers. The results indicated that these generative models reached the benchmark set by human groups in all six aspects of illustration design. Notably, DALL·E 3 has advantages over artificial intelligence in terms of artistic style, detail representation, creativity, and overall impression. This research guides designers in using these types of generative models and also provides a direction for developers to continue to improve the design capabilities of generative models.

HVLA Manipulation Intervention Resulting in Severe Vertebral Artery Dissection: A Case Report

As we move towards the future, the shift to electric transportation is crucial in reducing our carbon footprint and enhancing air quality. Electric vehicles (EVs) are essential to meet consumer needs and achieve this goal. However, this growth presents challenges such as increased demand for materials like lithium and cobalt leading to scarcity and environmental concerns. Moreover, proper management of EV batteries is crucial to recover valuable components and minimize environmental impact as they are hazardous. As EVs approach the end of their life, proper disposal or recycling is necessary to prevent environmental contamination and maximize resource recovery. I evaluate current approaches to recycling and reusing electric-vehicle batteries and suggest areas for future progress.

Dragon Boat Racing, a popular aquatic folklore team sport, is traditionally held during the Dragon Boat Festival. Inspired by this event, we propose a novel human-based meta-heuristic algorithm called dragon boat optimization (DBO) in this paper. It models the unique behaviors of each crew member on the dragon boat during the race by introducing social psychology mechanisms (social loafing, social incentive). Throughout this process, the focus is on the interaction and collaboration among the crew members, as well as their decision-making in different situations. During each iteration, DBO implements different state updating strategies. By modelling the crew’s behavior and adjusting the state updating strategies, DBO is able to maintain high-performance efficiency. We have tested the DBO algorithm with 29 mathematical optimization problems and 2 structural design problems. The experimental results demonstrate that DBO is competitive with state-of-the-art meta-heuristic algorithms as well as conventional methods.

Natural Killer (NK) cells, integral to the innate immune system, are notable in cell therapies because for their applicability in allogeneic treatments, distinguishing them from T cells typically employed in conventional cell therapies. However, their limited half-life poses a challenge for therapy. Although attempts to leverage feeder cells are common, safer methods are needed to mitigate the associated risks. In our study, an upregulation in the expression of 4-1BBL in Colo-205 cells under extracellular stresses such as hypoxia and cytochalasin D was observed. This enhanced binding to the 4-1BB receptors on NK cells promotes proliferation in NK cells. Elevated CD56 expression of a marker strongly linked to NK cell proliferation in co-culture further supports this process. Applying extracellular stressors, specifically hypoxia and cytochalasin D, to Colo-205 cells successfully tailored feeder cells, significantly enhancing NK cell proliferation.

Background: The Na+/K+-ATPase pump plays a vital role in maintaining the osmotic balance between intracellular and extracellular compartments. This study is designed to reveal possible differences of Na+/K+-ATPase activity, Na+/K+-ATPase α1 protein expression, and total ATPase (Na/K ATPase, Ca ATPase, H/K ATPase) activity in cell membranes of nasal mucosa with polyps. Methods: Patients who were diagnosed with chronic rhinosinusitis with nasal polyps (CRSwNP) for the first time were included in study group. Patients who underwent bilateral endoscopic sinus surgery (ESS) for reasons other than chronic sinusitis constituted the control group. Uncinate mucosa was sampled without local/topical anesthesia. Na+/K+ ATPase α1 protein level was measured by ELISA, and total ATPase activity and Na+/K+ ATPase activity by the colorimetric method. Results: There was no statistically difference between Na+/K+-ATPase α1 protein expression values between the study and control groups (P>0.683). Total ATPase activity was lower in nasal polyp patients without significance (P>0.140). Na+/K+-ATPase activity was significantly lower in nasal polyp patients when compared to the control group (P<0.033). In male patients, Na+/K+-ATPase activity and total ATPase activity were significantly lower in the study group (P<0.016 and P<0.020). Conclusions: Decreased Na+/K+-ATPase activity may be involved in the etiology of CRSwNP, by means of changing osmotic balance. In addition, the significant decrease in Na+/K+-ATPase activity and total ATPase activity in male CRS patients with nasal polyps suggests that there may be gender (or hormonal) differences in the etiology of CRSwNP. Key Points: Decreased Na+/K+-ATPase activity may be involved in the etiology of CRSwNP. The significant decrease in Na+/K+-ATPase activity and total ATPase activity in male CRS patients with nasal polyps suggests that there may be gender (or hormonal) differences in the etiology of CRSwNP. Key words: Ca2+ ATPase, H+/K+ ATPaz, Nasal polyp, Chronic Rhinosinusit, Na+/K+-ATPase, Na+/K+-ATPase α1 protein expression, total ATPase Key Points: Decreased Na+/K+-ATPase activity may be involved in the etiology of CRSwNP. This study might contribute to solve the therapeutic challenges in CRSwNP which might be due to unexplained physiopathology of nasal polyposis.

Without drug treatment, invasive fungal infections are associated with very high mortality. The use of antifungal agents needs to be personalised with regards to infective agent, dose regimen, drug-drug interactions, and tolerability or drug safety issues. Therapeutic drug monitoring (TDM) may help to optimise drug therapy in the individual case, but the clinical indications for TDM differ between different antifungal agents. Here, we aim to summarise the current, clinical view on antifungal TDM in relationship to the clinical pharmacology of each drug.

This paper proposes an improved version of the Homotopy Perturbation Method (HPM) that is specifically designed to solve a wide range of boundary value problems (BVPs), including both linear and nonlinear differential equations over a semi-infinite domain. Although HPM in its classical sense is capable of solving a large number of BVPs, but there are certain shortcomings when it comes to the problems defined over semi-infinite domains. We have highlighted some of these cases in this manuscript by studying suitable examples. On the other hand, the solutions to nonlinear problems using HPM are too lengthy to be displayed, or to be readily reused. To overcome these shortcomings, we have combined HPM with another scheme, namely Galerkin Method, and propose a hybrid of both, which may be referred to as Homotopy Perturbation Based Galerkin Method (HPGM). We have demonstrated the accuracy of the newly proposed method by comparing it with the exact solutions of some benchmark problems. We have found an excellent agreement between the solutions, and furthermore, the accuracy of the proposed technique is improved and also shown by plotting the residual error functions.