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Mitigating The Ferroresonance Resulting from HILGF Clearing in a Remote Area 10 kV Po...
Xueneng Su
Hua  Zhang

Xueneng Su

and 4 more

June 10, 2024
To solve the problem of high impedance line-to-ground fault (HILGF), a solution using isolation transformers for subnetwork divisions was previously implemented in the power distribution network. As a result of that, the network has been experiencing ferroresonance more often. We have furthered our understanding of the situation by modelling and simulations under the Power System Computer-Aided Design for Electromagnetic Transients and Direct Current (PSCAD/EMTDC) based on its real parameters. The ferroresonance originates from the network response to the HILGF clearing. Subnetwork division has certainly improved the network fault damping factor, but the line capacitance reduction it caused has exposed the system to ferroresonance. To mitigate the ferroresonance, high-frequency components are removed from the zero-sequence current using the morphological filter; then through edge detection, it is used as the input signal to the control module. The control module then takes the ferroresonance mitigation action intelligently. Testing this proposed solution has given promising results that testify to its effectiveness in real-time application.
Self-Distillation for Fast-Adaptive Automatic Modulation Classification
Yunhao Shi
Hua Xu

Yunhao Shi

and 4 more

June 10, 2024
Deep Learning models have ushered in leapfrog development in Automatic Modulation Classification (AMC). However, existing AMC models frequently fail to generalize well in testing data with different distribution. In this letter, we propose a simple and efficient baseline: incorporating self-distillation (SD) training strategy into an advanced backbone network. SD constructs a series of training tasks to continuously retrain on source dataset and generates a generalized backbone. Then the trained model is served as the foundation for finetuning on target dataset. The backbone network utilized multi-stream inputs and multi-scale convolutional kernels for increasing feature diversity. Besides, Convolutional Block Attention Module (CBAM) and Residual connection are also introduced into backbone network. Experiments conducted on RadioML2016.10a and RadioML2018.01a demonstrate that the superiority of the proposed backbone network and SD additional boost the generalization ability of the model.
Discovery of Novel Pyrazole-Amide-Isothiazole Derivatives as Succinate Dehydrogenase...
Ai-ling Bao
Xian-song Xie

Ai-ling Bao

and 11 more

June 10, 2024
With the emergence of drug resistance problems, many nitrogen-containing compounds have shown a wide range of biological activities. But so far, isothiazole derivatives have not been reported as antifungal agents. In this thesis, thirty-four novel pyrazole-amide-isothiazole compounds were designed and synthesised by using scaffold hopping theory. All of the target compounds have been confirmed by 1HNMR, 13CNMR and HRMS, the single-crystal culture of compound 7-XHU-2 was idendified. In addition, we performed gram scale-up experiments on target compounds 7-XHU-2 and 7-XHU-6. All the target compounds against five plant pathogens by mycelial growth rate method. The results showed that most of the compounds exhibited certain biological activities against Botrytis cinerea in vitro, compound 7-XHU-6 showed the best inhibitory activity against Botrytis cinerea and the inhibition rate can up to 98.27%. Scanning electron microscopic to observe the effect of mycelium action. Besides, the in vivo experiment indicated that compound 7-XHU-6 had excellent effect against Botrytis cinerea, protection efficiency up to 98.7%, therapeutic efficiency can reach up to 90.6%. In addition, molecular docking studies demonstrated that compound 7-XHU-6 has superior binding energy compared to the positive control fluopyram. This study demonstrates that 7-XHU-6 is a promising fungicidal candidate for further development
Effects of equivalence ratio and channel length on the physics of heat and mass trans...
Junjie Chen

Junjie Chen

June 21, 2024
Protrusions can be used to improve the transport processes involved, but the causes of the phenomena are still incompletely understood. Computational fluid dynamics analyses are performed under different sets of circumstances to gain insights into the physics of heat and mass transfer processes in a protruded millisecond microchannel reactor, wherein a steam reforming reaction is proceeding and protrusions are used to improve the transport processes involved. Recommendations are made on how to optimize design for better reactor performance. Particular emphasis is placed on delineating the role of methanol-air equivalence ratio and channel length in reactor performance. The results indicate that the equivalence ratio and channel length must be adjusted as needed to minimize pressure drops and maximize production of hydrogen. Necessary adjustments to the equivalence ratio of methanol to air can be made to control the maximum reactor temperature within certain needed limits. The short-channel design may be preferred over the long-channel design in order to simultaneously achieve low pressure drops and sufficiently high conversions in the reactor. Expectable compromises have to be made between hydrogen productivity and pressure drop.Keywords: Flow configurations; Heat fluxes; Fuel cells; Equivalence ratios; Channel lengths; Heat exchange
Patterns of island fox habitat use in sand dune habitat on San Clemente Island
Holly Gamblin
Jesse Maestas

Holly Gamblin

and 4 more

June 10, 2024
Identifying areas of high-quality habitat is often a critical first step for the recovery and management of species of conservation concern, yet patterns of high density in an area may not always correspond with high-quality habitat. On San Clemente Island (SCI), the island fox subspecies (Urocyon littoralis clementae) has been monitored annually since 1988 to track long-term population trends. Annual density estimates in most habitat types across the island range from 2–13 foxes/km2, yet unusually high estimates have repeatedly approached 50 foxes/km2 in a unique sand dune habitat area. Although sand dune habitat is restricted to one small area on the island, these estimates suggest sand dune habitat supports one of the highest population densities of any fox species in the world, and it may support > 5% of the SCI fox population. This prompted our investigation to determine if SCI foxes captured in sand dune habitat maintained home ranges within this habitat type. We hypothesized that island foxes used sand dune habitat as an important foraging area while maintaining home ranges centralized in adjacent habitat types, which likely inflated density estimates for sand dune habitat. Between January–July 2018, we used Global Positioning System collars to track the movements of 12 island foxes captured in the sand dune habitat area. Contrary to our initial predictions, we found that island foxes captured in the sand dune habitat area do maintain home ranges and core areas centralized in sand dune habitat. All 12 island fox home ranges estimated contained >50% sand dune habitat in either their 50% or 95% fixed kernel density estimate (KDE) home range, and island foxes were 3.14 times more likely to use active sand dune habitat when compared to the second most abundant habitat type, maritime desert scrub (Adjusted β = 3.14, 95% CI = 3.07–3.12).
Anti-inflammatory and remyelinating effects of AZD4547 in experimental multiple scler...
Fynn Gurski
Kian Shirvanchi

Fynn Gurski

and 10 more

June 10, 2024
Background and Purpose: Fibroblast Growth Factor (FGF), VEGFR2, and CSF1R signalling pathways play a key role in the pathogenesis of multiple sclerosis (MS). Selective inhibition of FGFR by infigratinib in MOG35-55-induced EAE prevented severe first clinical episodes by 40%; inflammation and neurodegeneration were reduced, and remyelination was enhanced. Multi-kinase inhibition of FGFR1-3, CSF1R and VEGFR2 by AZD4547 may be more efficient in reducing inflammation, neurodegeneration and regeneration in the disease model. Experimental Approach: Female C57BL/6J mice were treated with AZD4547 (6.25 mg kg-1 or 12.5 mg kg-1) orally or placebo over 10 days either from time of EAE induction (prevention experiment) or onset of symptoms (suppression experiment). Effects on inflammation, neurodegeneration and remyelination were assessed at the peak of the disease (day 18/20 p.i.) and the chronic phase of EAE (day 41/42 p.i.). Key Results: In the prevention experiment, treatment with AZD4547 prevented severe first clinical episodes by 66.7 or 84.6% respectively. Mice treated with 12.5 mg kg-1 of AZD4547 hardly showed any symptoms in the chronic phase of EAE. In the suppression experiment, treatment with AZD4547 resulted in a long-lasting reduction of severe symptoms by 91 or 100%. Inflammation and demyelination were reduced, and axonal density, numbers of oligodendrocytes and their precursor cells, and remyelinated axons were increased in both experimental approaches. Conclusion and Implications: Multi-kinase inhibition by AZD4547 in a well-tolerated dose of 1 mg kg-1 in humans may be a promising approach to reduce inflammation and neurodegeneration, to slow down disease progression and support remyelination in patients.
Active defense strategies for invasive plants may alter the distribution pattern of p...
Jun Zhai
Bin Hou

Jun Zhai

and 7 more

June 10, 2024
In the invaded areas, it is believed that invasive species reduce their investment in defense due to the absence of natural enemies. This study explored the defense strategies of invasive plants through research on the invasive species. Field investigation indicated that invasive plants have a driving effect on herbivorous pests, and the frequency of leaf damages of native plant reaches a peak at 2–3 m distance from the invasive species. A feeding preference assay with two generalist herbivorous insects (native insect Spodoptera litura and invasive insect Spodoptera frugiperda) showed that the invasive plants have a stronger antifeedant effect on generalist herbivores than native plants. By analyzing the content of secondary metabolites in the leaves of three invasive plants (Sphagneticola trilobata, Mikania micrantha, Ipomoea cairica) and three native plants (Ipomoea nil, Paederia foetida, Polygonum chinense), the leaves of invasive plants had higher concentrations of substances associated with defenses, including total phenols, flavonoids, jasmonic acid, tannin, H2O2, and total antioxidant capacity, and lower soluble protein concentrations than the native plants. After leaf damage, compared to native plants, the leaves of invasive plants showed an overall increase in substances associated with defense, except for soluble sugar. These results suggest that invasive plants maintain active defense strategies in invaded areas, and these strategies may alter the distribution patterns of herbivorous insects in a manner that facilitates invasion.
Species distribution model predictability doesn't always decline under novel temperat...
Andrew Allyn
Stephanie Brodie

Andrew Allyn

and 11 more

June 10, 2024
Despite the rapid development and application of species distribution models (SDMs) to predict species responses to climate-driven ecosystem changes, we have a limited understanding of model predictive performance under novel environmental conditions. We aimed to address this gap using a simulation experiment to evaluate how novel ecosystem conditions and species movement influence SDM predictability. We leveraged observed sea surface temperature responses in the California Current and Northeast U.S. Shelf large marine ecosystems (LMEs) and prescribed species-response curves to simulate the distribution of a resident but mobile ectotherm, and a seasonally migrating ectotherm in each LME. For each LME and species archetype, we fitted boosted regression tree SDMs using data from 1985-2004 and then predicted the monthly probability of presence from 2005-2020 and calculated the environmental novelty of prediction month conditions. Generally, climate-driven ocean warming resulted in increasing environmental novelty over time, though patterns varied seasonally as warming caused novel conditions to increase over time in the summer and fall and decrease in the winter and spring as novel, cool conditions became more rare. Overall, predictive performance declined as novelty increased and occurred before prediction conditions became distinguishable from observation conditions. There were also unexpected increases in performance under novel environmental conditions when these novel conditions occurred at optimum species-response curve temperatures. These results highlight that environmental novelty may not always pose prediction challenges and will depend on where novel conditions map onto species-response curves. As SDM applications expand, there will be an ongoing need to maximize data quantity and quality to more fully characterize a species’ fundamental niche, explore environmental novelty relative to species-response curves, and continue to improve methods for quantifying and communicating model uncertainty. These efforts will open opportunities for model improvement and support stakeholders’ capacity to understand and integrate predictions into decision-making processes.
A Data Analysis on Diabetic Patients Using Data Mining Tools and Prediction Algorithm...
Nimra Iqbal
Syed Rafiq ul Hoda

Nimra Iqbal

and 2 more

September 11, 2024
Diabetes, a prevalent chronic disease, poses significant challenges in healthcare management worldwide. This study presents a comprehensive analysis of a dataset comprising 1,000,000 instances with 12 features and a prediction variable that indicates the presence or absence of type 1,2 and 3 diabetic diagnoses in a different age group patient depending on weight factors, family history, and other genetic factors. This research deployed sophisticated data mining techniques and machine learning algorithms to help in understanding potential risk factors and predictors of the disease by examining the intricate interplay among demographic, clinical, and lifestyle variables. This dissertation also investigates the deep analysis of type 1, type 2, and type 3 medicines that are being used for different age groups of patients (children, young, and older). This study represents a significant contribution to diabetes research, offering valuable insights into the complex dynamics of the disease. The significance of data mining tools and prediction algorithms, the research endeavors to advance our understanding of diabetes etiology, risk assessment, and management strategies, ultimately contributing to improved patient outcomes and healthcare decision-making.
Histopathological Association Between ChronicEndometritis and Adenomyosis: Clinical F...
Batuhan Aslan
Cevriye Cansız Ersöz

Batuhan Aslan

and 7 more

November 07, 2025
Purpose: To investigate the histopathological association between chronic endometritis (CE) and adenomyosis, focusing onbasal endometrial alterations and the potential involvement of tissue injury and repair (TIAR) mechanisms.Methods: This retrospective case–control study included 146 propensity score-­ matched hysterectomy specimens (73 adenomy-osis, 73 controls). CE was diagnosed via CD38 immunohistochemical staining, identifying ≥ 5 plasma cells per high-­ power field.Basal endometrial thickness was measured digitally at the endo-­ myometrial junction. Basal endometrial loss was defined as theabsence of the basal layer in at least two of three regions.Results: CE was significantly more frequent in the adenomyosis group (23.3%) than in controls (9.6%; p0.028). Basal endo-metrial loss, observed in 23.3% of cases, was strongly associated with CE (47% vs. 7.1%; p < 0.001). In patients with measurablethickness, a 0.15 mm cutoff predicted CE with AUC 0.888 (sensitivity 83.3%, specificity 86.9%). In multivariate analysis, basalendometrial loss was an independent risk factor for CE (adjusted OR 10.45, 95% CI 4.12–26.51; p < 0.001).Conclusions: CE is significantly associated with adenomyosis. Basal endometrial loss may mediate this relationship throughTIAR-­ related mechanisms, suggesting CE as a potential therapeutic target in adenomyosis
Lidar-Derived Forest Metrics Predict Snow Accumulation and Ablation in the Central Si...
Cara R. Piske
Rosemary W.H. Carroll

Cara R. Piske

and 7 more

June 10, 2024
Snowmelt is a critical water resource in the Sierra Nevada impacting populations in California and Nevada. In this region, forest managers use treatments like selective thinning to encourage resilient ecosystems but rarely prioritize snowpack retention due to a lack of simple recommendations and the importance of other management objectives like wildfire mitigation and wildlife habitat. We use light detection and ranging (lidar) data collected over multiple snow accumulation seasons in the Sagehen Creek Basin, central Sierra Nevada in California, USA, to investigate how snowpack accumulation and ablation are affected by forest structure metrics at coarse, stand-scales (e.g., fraction of vegetation, or fVEG) and fine, tree-scales (e.g., a modified leaf area index, and the ratio of gap-width to average tree height). Using a newly developed lidar point cloud filtering method and an “open-area reference” approach, we show that for each 10% decrease in fVEG there is a ~30% increase in snow accumulation and a ~15% decrease in ablation rate at the Sagehen field site. To understand variability around these relationships, we use a random forest analysis to demonstrate that areas with fVEG greater than ~30% have the greatest potential increased accumulation response after forest removal. This spatial information allows us to assess the utility of completed and planned forest restoration strategies in targeting areas with the highest potential snowpack response. Our new lidar processing methods and reference-based approach are easily transferrable to other areas where they could improve decision support and increase water availability from landscape-scale forest restoration projects.
Comparative metagenomic analysis of bacterial communities and functional profiles in...
Ashutosh parab
Mayukhmita Ghose

Ashutosh Parab S

and 5 more

June 10, 2024
Mangrove and seaweed ecosystems, as integral components of blue carbon habitats, play pivotal roles in global carbon sequestration and coastal protection, showcasing unique environmental dynamics and biological diversity. This study explores seaweed and mangrove-associated bacterial communities and their functional dynamics in Goa coastal habitats, highlighting their critical ecological roles within blue carbon habitats. Physicochemical analysis revealed contrasting environmental conditions, with the seaweed ecosystem experiencing stable marine influences and the mangrove ecosystem subject to dynamic terrestrial-aquatic interactions. Elevated levels of pathogenic bacteria in both ecosystems indicate significant pollution from anthropogenic activities. Advanced metagenomic techniques, including Illumina’s 16S V3-V4 amplicon sequencing, were employed to assess bacterial diversity. The seaweed ecosystems were predominated by Proteobacteria, Cyanobacteria, and Actinobacteria, crucial for nutrient cycling and organic matter decomposition. In contrast, mangrove ecosystems displayed a more complex microbiota, represented by Firmicutes, adapted to anaerobic conditions. Core microbiome analysis revealed the prevalence of the pathogen Pleurocapsa in seaweeds, suggesting ecosystem health decline, while mangrove microbiomes showed the dominance of genera such as Bacillus and Clostridium, which are key in processing organic material under low-oxygen conditions. Notably, Clostridium levels indicated faecal contamination, underscoring the impact of external pollution. Functional pathway analysis conducted with PICRUSt2 analysis elucidated the metabolic specializations of the microbiomes. Seaweed-associated microbiomes excelled in carbohydrate metabolism, cellular growth and death and environmental information processing, whereas mangrove microbiomes showed advanced capabilities in carbohydrate metabolism, xenobiotics biodegradation and complex organic compound metabolism such as terpenoids and polyketides, reflecting complex microbial dynamics and pollution in mangroves. The findings emphasize the urgent need for effective conservation strategies to protect these vital ecosystems against the rising threats of anthropogenic pressures pollution, and climate change. An enhanced understanding of microbial dynamics and functional capabilities is essential for implementing informed management practices, ensuring the conservation and restoration of these critical blue carbon ecosystems.
Magnetic-driven metal-organic framework nanorobot for the coupling engineering of ele...
Hao Li
Yang  Pan

Hao Li

and 5 more

June 10, 2024
Gold recycling from secondary sources provides an economically viable and sustainable approach to meet the increasing global demand for this precious metal. However, gold resources are inherently scarce. To address this issue, the present study presents an innovative solution: sulfhydryl-functionalized magnetic metal-organic framework nanorobots (MNR-MOF-DMSA). These nanorobots are designed for swift, efficient, and selective capture of Au(III) trace amounts from complex aqueous mixtures. MNR-MOF-DMSA showed an ultra-high adsorption capacity, better selectivity, and reusability with long-term stability, as it can selectively extract over 94% of Au(III) from complex e-waste leachate, and the adsorption capacity can reach 1716 mg g-1 (at pH 5 in 3 hours) in harsh acidic condition followed Langmuir model. In addition, after conducting a detailed mechanistic analysis, it was discovered that the selective adsorption behaviors observed were due to the combined effect of several factors, including the reduction of sulfhydryl groups, the coordination interactions between amide groups and Au(III) ions, as well as the electrostatic interactions between protonated amino and AuCl4- ions. It is also worth mentioning that the better catalytic properties of the developed hybrid MOF (MNR-MOF-DMSA-Au) were due to the reduction of Au(III) to Au(0). This study proposes new ways to recover and reuse gold e-waste for a sustainable future, as well as environmental protection and remediation.
Human Primary NK Cells from Humanized BLT-IL15 Mice Show Superior Expansion and Cytot...
Yan Yang
Jianshui Zhang

Yan Yang

and 6 more

June 09, 2024
Background: Natural Killer (NK) cells play a critical role in host defense. Studying human NK immunobiology is mainly focused on using in vitro assays with limited NK cells from peripheral blood. It is challenging to study human NK cell biology in vivo due to potential ethical issues in human study and the lack of suitable animal models. Developing a suitable animal model to study human NK cell biology in vivo is critical to support NK-based clinical immunotherapy. Results: Here, we develop a novel method to study human NK cells in vivo by using hu-BLT (humanized bone marrow-liver-thymus) mice that constitutively express human IL-15 (henceforth, hu-BLT-IL15). We also compare human NK cells between hu-BLT-IL15 and hu-BLT mice without IL-15 expression by a newly developed approach for the rapid propagating of primary human NK cells from various sources (including peripheral blood, spleen, and bone marrow). NK cells from hu-BLT-IL15 show superior number, purity, and cytotoxicity (including natural cytotoxicity and antibody-dependent cellular cytotoxicity [ADCC]), compared with NK cells from hu-BLT. Unexpectedly, we also identify a significantly increased percentage of NK-like T cells (CD3+ CD16+ CD56+) from hu-BLT-IL15, indicating that IL-15 signaling enhances both NK and NKT cell development. Conclusions: A better understanding of the immunobiology of the NK-like T cells in the hu-BLT-IL15 mouse model may provide critical information for determining the clinical value of these cells in predicting disease progression. Thus, we propose that the hu-BLT-IL15 mouse model in combination with the 721.221-mIL21 feeder cell expansion system can serve as a superior model to study human NK and NK-like T cells in comparison with hu-BLT.
Overstaying our Welcome: On the Rise of Women’s Seniority in the Academy
Tricia A. Stadnyk

Tricia Stadnyk

June 09, 2024
Issues surrounding gender equality are – and should be - front and centre in the water resources community, and other STEM fields. Very necessarily, the focus tends to remain on recruitment and inclusivity offering support for students and early career academics. The leaky pipeline concept used to describe the incremental loss of women from STEM fields with career duration results in a disproportionate loss of women, creating a parallel problem where highly qualified, top tier academics are disproportionately lost from the system after significant financial and personnel investment by institutions is made. Ultimately, the leaky pipeline undermines the extensive investment of the hydrology and other STEM communities in equity, diversity, inclusion, and accessibility (EDIA) recruitment and retention programs by cutting short career ambitions and the trajectories of diverse top performing individuals, resulting in no net benefit of EDIA policy investments. Addressing this critical gender gap requires the attention and support of the hydrology community of practice with specific focus on generating opportunities for advancement, confronting systemic and structural biases, and improving education around allyship. Institutions and professional organizations need to consciously grow diversity in leadership and recognize and outwardly manage the perception of academic excellence around slow research and education that attracts increased diversity. Supporting allyship, reducing competitiveness among community members, and reinforcing collaboration will not only attract, but retain, a higher proportion of diversity in the hydrology community, academia, and STEM professions in general. It is time for the water resources (and other STEM) communities to demand broader accountability and recognition of the barriers to women, implement and reward more diverse definitions of research excellence, and offer allyship training to the community of practice at large.
University Teaching of Mass Spectrometry as a Key Practical Technique within the Cont...
Andrew F. Worrall
Craig D. Campbell

Andrew F. Worrall

and 3 more

June 09, 2024
Rationale: Mass spectrometry (MS) is introduced to high school students in the UK in many pre-university course syllabi. As such, we have identified the use of MS as a key technique that should be taught practically to undergraduates from the outset of their studies. This mini‑review describes how we introduce and develop students’ use of MS throughout our three‑year undergraduate spiral curriculum practical program, using atmospheric pressure chemical ionisation MS (APCI/MS). Methods: We have used an Advion Expression L spectrometer, fitted with an atmospheric solids analysis probe or a Plate Express TLC sampler for sample introduction. Results: We have successfully demonstrated the use of APCI-MS in a range of practicals and experiments covering organic and organometallic chemistries, with large cohorts of students gaining hands‑on instrumental experience in authentic research settings. Conclusions: APCI-MS has proven to be an easy-to-use and valuable addition to our undergraduate practical course. The robustness of the spectrometer enables routine use by large cohorts of students with minimal supervision, and routine maintenance can be carried out by non-specialist technicians. Students can readily process and interpret results for a series of routine analyses, as well as demonstrate uses in problem-solving exercises.
Population pharmacokinetics-pharmacodynamics-based dose optimization of carvedilol in...
Priscila Yamamoto
Valvanera Vozmediano

Priscila Yamamoto

and 10 more

June 09, 2024
Aim: A population-based pharmacokinetic (PK) modeling approach (PopPK) was used to investigate the impact of Roux-en-Y gastric bypass (RYGB) on the PK of (R)- and (S)-carvedilol. We aimed to optimize carvedilol dosing for these patients utilizing a pharmacokinetic/pharmacodynamic (PK/PD) link model. Methods: PopPK models were developed utilizing data from 52 subjects, including non-obese, obese, and post-RYGB patients who received rac-carvedilol orally. Covariate analysis included anthropometric and laboratory data, history of RYGB surgery, CYP2D6 and CYP3A4 in vivo activity, and relative intestinal abundance of major drug-metabolizing enzymes and transporters. A direct effect inhibitory Emax pharmacodynamic model was linked to the PK model of (S)-carvedilol to simulate the changes in exercise-induced heart rate. Results: A two-compartmental model with linear elimination and parallel first-order absorptions best described (S)-carvedilol PK. RYGB led to a twofold reduction in relative oral bioavailability compared to non-operated subjects, along with delayed absorption of both enantiomers. The intestinal ABCC2 mRNA expression increases the time to reach the maximum plasma concentration. The reduced exposure (AUC) of (S)-carvedilol post-RYGB corresponded to a 33% decrease in the predicted area under the effect curve (AUEC) for the 24-hour beta-blocker response. Simulation results suggested that a 50 mg daily dose in post-RYGB patients achieved comparable AUC and AUEC to 25 mg dose in non-operated subjects. Conclusion: Integrated PK/PD modeling indicated that standard dosage regimens for non-operated subjects do not provide equivalent beta-blocking activity in RYGB patients. This study highlights the importance of personalized dosing strategies to attain desired therapeutic outcomes in this patient cohort.
RESPIRATORY MANIFESTATIONS OF PEDIATRIC GRANULOMATOSIS WITH POLYANGIITIS: A 12-YEAR E...
Shilpa Sridhar
Shoghik Akoghlanian

Shilpa Sridhar

and 2 more

June 09, 2024
Objectives: Pediatric Granulomatosis with Polyangiitis (GPA) is associated with several pulmonary manifestations. This study aims to describe these manifestations at time of diagnosis and longitudinally at a tertiary-care pediatric hospital. Methods: We performed a retrospective chart review of patients with GPA treated at our facility between January 1 st 2010 through December 31 st 2021. We collected baseline demographics, reported symptoms, imaging findings, pulmonary function tests (PFTs), and laboratory data at time of diagnosis. Data were collected using 6-month observation intervals to follow recurrence of respiratory manifestations, testing during recurrence, and resultant treatment modifcations. Results: Of 13 patients treated for GPA during the study period, 12 developed respiratory tract involvement. A total 87 six-month observation periods were analyzed. At time of diagnosis, 83% (10/12) of subjects reported respiratory symptoms, 92% (11/12) had abnormal chest CT imaging, and 42% (5/12) had abnormal PFTs. Fewer than half of the patients were seen by pulmonology within 6 months of diagnosis. Eight subjects (75%) had respiratory manifestations during subsequent observation periods. Chest CT or PFTs were obtained in 23/44 (52%) of observations periods with respiratory symptoms, with pulmonary consultation in only 9/44 (20%). Conclusions: This is the first US study to describe respiratory manifestations in pediatric GPA patients longitudinally, finding they are common and frequently recurrent. Our cohort had almost universally abnormal imaging at diagnosis regardless of respiratory symptoms. Early collaboration with pediatric pulmonology in the care of GPA patients may allow rheumatology teams to efficiently evaluate recurrent symptoms and address concomitant lung disease.
Vomiting Despite Adherence to Guidelines: Suboptimal Control of Vomiting in Pediatric...
Rotem Fishel Ben-Kenan
Lily Sandblom

Rotem Fishel Ben-Kenan

and 3 more

June 09, 2024
Objective: Vomiting is a common and distressing acute side effect of chemotherapy, negatively impacting quality of life, nutritional status and the ability of patients to tolerate further treatment. Standardized guidelines have been developed for anti-emetic regimens to improve control of nausea and vomiting. We aimed to determine the benefit of adherence to clinical practice guidelines (CPGs) on complete control of vomiting during chemotherapy in newly diagnosed pediatric patients with cancer. Methods: An electronic dashboard of pediatric patients newly diagnosed with cancer at Phoenix Children’s Hospital between August 2019 and January 2021 and receiving their first cycle of chemotherapy was utilized to monitor chemotherapy regimen, anti-emetic medications and vomiting episodes. Blocks were classified as guideline inconsistent, guideline-consistent, or guideline-consistent PLUS if additional prophylactic anti-emetic medications were utilized. We identified patients with complete control of vomiting, defined as no vomiting and no additional anti-emetics needed. Results: Among 136 patients, 29% received guideline inconsistent care, 37% received guideline-consistent care, and 34% received guideline-consistent PLUS care. 48% achieved complete control of vomiting. Older patients (p<0.0001) and higher emetogenicity chemotherapy (p=0.0003) were more likely to receive guideline-consistent or guideline-consistent PLUS therapy. With guideline-consistent and consistent-PLUS grouped together, diagnosis also was associated with improved adherence to CPGs (p=0.022). Multivariate analysis showed that patients more likely to receive guideline-consistent care were of older age (OR 1.11, p=0.016) and solid tumor patients (OR 5.59, p=0.028). Conclusions: Despite high rates of CPG adherence, complete control of vomiting remains sub-optimal which highlights the need for novel and/or risk-adapted therapies.
Series arc fault diagnosis using generalized S-Transform and power spectral density
Penghe Zhang
Yiwei Qin

Penghe Zhang

and 1 more

June 10, 2024
It is difficult to identify the arc fault effectively when the loads in the user-side are more complicated, blocking the development of low-voltage monitoring and pre-warning inspection. In this paper, series arc fault signals are acquired according to IEC 62606. The main time-frequency features can be strengthened more effectively by the generalized S-transform with bi-Gaussian window, meanwhile the power spectrum density (PSD) determination allows for the detection of imperceptible high-frequency harmonics energy reflections, increasing the rate of arc fault diagnosis and suitable for the arc fault monitoring of nonlinear loads. The final samples are trained and classified by two-dimensional Convolutional Neural Network (CNN) and the overall accuracy of identification is 98.13%, of which involves various domestic loads, providing a reference for the follow-up arc fault monitoring and inspection research.
Comprehensive analysis of vegetation and rhizosphere bacterial composition after the...
Zepeng Sheng
Lydia Ratna Bunthara

Zepeng Sheng

and 6 more

June 09, 2024
Chinese tallow, Triadica sebifera (L.) Small (Euphorbiaceae) is an invasive plant species causing ecological issues in various regions. Investigating the rhizobacterial community following and exploit whether above-ground plant communities and below-ground rhizobacterial communities exhibit a coupled response to its invasions is significant. Here we employed next-generation sequencing and sophisticated ecological analysis techniques to elucidate the rhizobacterial communities of T. sebifera in Miyajima Island, SW Japan. We analyzed soil samples collected from seven sites over four sampling times (total 76 samples), comparing the rhizobacterial communities associated with T. sebifera to those surrounding native plants’ and in control soil sites. Our findings indicated a significantly higher bacterial abundance in T. sebifera rhizosphere compared to native plants and control conditions but there were no significant changes seasonally. Spatial variability was observed in the rhizosphere bacterial communities of T. sebifera in Miyajima, a pattern notably influenced by environmental factors like soil pH and phosphorus concentrations. Our binary tanglegram analysis revealed a correlation between the above-ground plant communities and the below-ground rhizobacterial communities in areas where T. sebifera is located. Additionally, T. sebifera growing in nutrient-poor soil collected from Miyajima Island exhibited a rhizobacterial community structure resembling that of the local plants, suggesting adaptability of T. sebifera ’s rhizosphere to local soil conditions. We also identified Proteobacteria as a significant bacterial group within T. sebifera rhizosphere, highlighting their potential role in the invasive success of the plant by Random Forest algorithm. This research provides new insights into the complex interactions between T. sebifera and its associated rhizobacterial communities and contributes to our understanding of its ecological invasion mechanisms.
Process intensification for hydrogen production in protruded reactors with enhanced h...
Junjie Chen

Junjie Chen

June 24, 2024
The present study focuses upon the physics of heat and mass transfer processes in a protruded millisecond microchannel reactor, wherein a steam reforming reaction is proceeding and protrusions are used to improve the transport processes involved. Parametric analysis of the reactor system is carried out using a three-dimensional numerical model that is sufficiently detailed to delineate the role of geometric features and operation conditions in reactor performance. Computational fluid dynamics analyses are performed under different sets of circumstances. In analysing the mechanisms involved in the intensified processes, account is taken of the factors that may influence the reactor performance. New insights into the physics of the processes are presented, with recommendations on how to optimize reactor design for better performance. The results indicate that the flow rates and feed compositions must be adjusted as needed to maximize production of hydrogen and minimize pressure drops. Protrusions are very effective in improving the transport processes involved without greatly impairing hydraulic performance. Methanol can be converted effectively to hydrogen due to the successive continuous interruptions in the presence of hemispherical protrusions. Necessary adjustments to the molar ratio of steam to methanol can be made to control the maximum reactor temperature within certain needed limits. Protrusions can be used to improve the conversion and productivity due to enhanced heat and mass transfer, as they behave as a baffle to direct flow of the reforming process flow stream.Keywords: Operation conditions; Periodic wakes; Methanol processors; Protruded reactors; Process intensification; Efficient operation
A Case Report of Tuberculous Meningitis resulting in Irreversible Visual Impairment d...
Erika Lee-Yu Lin
Sai Gulhane

Erika Lee-Yu Lin

and 4 more

June 09, 2024
IntroductionTuberculous meningitis (TBM) is a common manifestation of central nervous system tuberculosis. It is associated with primary infection, usually localized in the lungs with dissemination to the lymph nodes. The bacteria then travel through the bloodstream to the meninges, resulting in a high bacterial count and the formation of microtubercles. TBM develops when these microtubercles rupture. Vision loss is a disabling complication of tuberculous meningitis.[1]In developing countries, this infection is more prevalent among infants and toddlers, while in developed countries, adults are more commonly affected due to reactivation of dormant TB infections.Ophthalmic complications are common in TBM patients, including optic neuritis, optic atrophy, and papilloedema due to increased intracranial pressure. Vision impairment could result from the disease process or anti-tuberculosis treatment (ATT).[2]
Atypical Posterior Reversible Encephalopathy Syndrome: A Lentiform Fork Sign Followin...
Franco Appiani
Carlos Claverie

Franco Appiani

and 2 more

June 09, 2024
INTRODUCTION:The posterior reversible encephalopathy syndrome (PRES) presents as focal neurological symptoms associated with neuroimaging of brain edema, frequently evolving toward remission. It typically manifests as a transient episode of encephalopathy, seizures, and visual disturbances within specific patient populations. Originally described in patients with autoimmune conditions, it also occurs in solid organ transplant (SOT) recipients, possibly due to the effect of immunosuppressive drugs (ISDs). [1] In these conditions, presumed damage to the blood-brain barrier results from endothelial dysfunction caused by exposure to the toxic effects of these agents, or is precipitated by cerebrovascular dysregulation following acute hypertension. [2]Common brain magnetic resonance image (MRI) patterns associated with PRES include vasogenic brain edema in the white matter, with a dominant parieto-occipital pattern, bilateral watershed pattern, or superior frontal sulcus pattern. However, atypical localizations such as frontal, temporal, basal ganglia, brainstem, or cerebellar involvement can also occur. Recently, a bilateral occurrence of basal vasogenic brain edema outlining the lentiform nucleus, known as the ’lentiform fork sign’ (typically described as a reliable sign of uremic encephalopathy), has been identified in patients experiencing PRES without metabolic disturbances. [4-7]In this report, we present a case of a recent bilateral lung and liver transplant recipient with a diagnosis of cystic fibrosis who experienced his first-ever seizure episode, reflecting PRES with an atypical neuroimaging pattern, including the lentiform fork sign.
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