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Reliability-Based Thermal and Wind Units Economic Dispatch in Presence of DSRP
Farzad Arefi
Hassan  Meyar-Naimi

Farzad Arefi

and 2 more

February 28, 2023
Recently, Wind Turbines (WTs) and Electric Vehicles (EVs) have been integrated into the demand side of many countries. WTs and EVs have uncertainties in electrical energy generation and consumption, respectively. Additionally, Thermal Units (TUs) suffer from random failures. As always, secure power system operation is the main goal of an independent system operator, therefore, these uncertainties should be considered. This paper proposes a two-stage reliability-based model for the economic dispatch of TUs and WTs in the presence of a demand-side response program. At the first stage, the well-being analysis is performed to determine the power generation and spinning reserve of the TUs regarding the timely power generation of WTs. At the second stage, the adoption of the responsive load consumption with the various conditions of the generation system in the power pool market is established using the cost of expected energy not served criterion. This optimization problem is solved at two stages using the genetic algorithm. To validate the proposed model, numerical studies have been applied to the generation part of an IEEE test power system including eleven TUs, one WT, and one thousand EVs.
Effects of nonaromatic through-bond conjugation and through-space conjugation on the...
Xiaomi Zhang
Yunhao Bai

Xiaomi Zhang

and 4 more

February 27, 2023
Photoluminescence (PL) mechanisms of nontraditional luminogens (NTLs) have attracted great interests, and they are generally explained with intra/intermolecular through-space conjugation (TSC) of nonconventional chromophores (NCCs). Here we propose a new concept of nonaromatic through-bond conjugation (TBC) and proved that it plays an important role in the PL of NTLs. The PL behaviors of cyclohexanedione (CHD), dimethyl-1,3-cyclohexanedione (DMCHD) and their three respective isomers are studied and correlated with their chemical structures and aggregate structures. These compounds show different fluorescence emissions from blue to yellow region, and they also show different concentration-dependent emission (CDE) and excitation-dependent emission (EDE) characteristics. The position of ketone groups and the steric hindrance of methyl groups in the compounds determine the occurrence of keto-enol tautomerism or not. The compounds with conjugated keto-enol structure (i.e., nonaromatic TBC) show red-shifted emissions with comparison to the compounds with only isolated diketone structures. Theoretical calculations show that TBC effect reduces the HOMO-LUMO energy gaps of single molecules, and it facilitates the formation of stronger TSC in the aggregate state. The cooperative effect of nonaromatic TBC and TSC leads to more significantly red-shifted emissions. This work provides a novel and deeper understanding of the PL mechanisms of NTLs and is of great importance for directing the design and synthesis of NTLs with enhanced and red-shifted emissions.
Magnesium-Air Fuel Cell employing environmentally benign and highly porous phyllosili...
S. Harinipriya
Kaushik Palicha A

S. Harinipriya

and 1 more

February 27, 2023
Abstract: Current state-of-the-art Mg-Air batteries or Mg-Air Fuel cells are interchangeably used and involve, Mg-Anode, highly porous carbon cathode as Gas Diffusion Layer (GDL) for air to flow in the cathode and reduces as hydroxyl ion (Oxygen Reduction Reaction) (ORR). The present studies aim at the development of hydroxyl ions doped Conducting Polymer and/or mixed metal oxide phyllosilicates-based cathode for Mg-Air Fuel Cells. This cathode directly supplies OH- ions to the anode for the formation of Mg(OH) 2 and subsequently MgO without involving ORR reaction. Thus, the internal resistance associated with ORR is eliminated and improves the performance of Mg-Air Fuel Cells (FCs). Two cells were fabricated were, Cell 1 with phyllosilicates and Mg-rich phyllosilicate as the cathode and Mg(OH) 2 soaked membrane respectively, Mg anode. Cell 2 with polyaniline cathode, Mg-enriched phyllosilicates as Mg(OH) 2 soaked membrane and Mg anode. The cell configurations are Cell1: SS/Phyllosilicate//Mg(OH)2 soaked Mg-enriched phyllosilicate membrane//Mg/Al Cell2: SS/OH- ions doped Polyaniline//Mg(OH)2 soaked Mg-enriched phyllosilicate membrane//Mg/Al Both the cells were subjected to Galvanostatic Charge/Discharge studies at room temperature at discharge rate of 50mA/g. Cell 1 with naturally occurring mixed oxide silicates (phyllosilicates) performed efficiently then the Cell 2 to conducting polymer cathode.
Predator-mediated apparent competition persists in a rapidly changing Subarctic ecosy...
Milly Hong
James Roth

Milly Hong

and 2 more

February 27, 2023
The Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. In the High Arctic, lemming population cycles indirectly affect predation risk on alternative prey such as shorebird nests as they share a main predator, the arctic fox. In this study, we examined the indirect effects of arvicoline rodent cycles on alternative prey in the Subarctic where arctic and red fox coexist as predators of primary (lemmings, voles) and alternative prey (shorebird nests). Using 10 years of field data, our results indicate that interannual variation in daily nest survival of Dunlin was best explained by an interactive effect of arvicoline rodent abundance and arctic fox (not red fox) abundance. During high rodent years, shorebird nest survival appeared to be buffered from variation in arctic fox abundance but when rodents were absent, nest survival declined. We found no relationship between shorebird nest survival and red fox abundance despite red foxes being found in much higher abundance in the study area. Our results indicate that despite the presence of other predators and multiple primary prey species, predator-mediated interactions common to High Arctic sites, still hold true for the Subarctic in regards to the arctic fox, arvicoline rodents and shorebirds.
Environmental constraints and species adaptive strategies drive plant longevity in Hi...
Thinles Chondol
Adam Klimeš

Thinles Chondol

and 11 more

February 27, 2023
Plant lifespan has important evolutionary, physiological, and ecological implications related to population persistence, community stability, and resilience to ongoing environmental change impacts. Although biologists have long puzzled over the extraordinary variation in plant lifespan and its causes, our understanding of interspecific variability in plant lifespan and the key internal and external factors influencing longevity remains limited. Here, we demonstrate the concurrent impacts of environmental, morphological, physiological, and anatomical constraints on interspecific variation in longevity among >300 vascular dicot plant species naturally occurring at an elevation gradient (2800-6150 m) in the western Himalayas. First, we show that plant longevity is largely related to species’ habitat preferences. Ecologically stressful habitats such as alpine and subnival host long-lived species, while productive ruderal and wetland habitats contain a higher proportion of short-lived species. Second, longevity is influenced by growth form. Small-statured cushion plants with compact canopies and deep roots, most found on cold and infertile alpine and subnival soils, had a higher chance of achieving longevity. Third, plant traits reflecting plant adaptations to stress and disturbance modulate interspecific differences in plant longevity. Importantly, we show that longevity and growth are negatively correlated. Slow-growing plants are those that have a higher chance of reaching a maximum age. Finally, changes in plant carbon, nitrogen, and phosphorus content in root and leaf tissue were significantly associated with variations in longevity. We discuss the link between the longevity and productivity and stability of studied Himalayan ecosystems and the intrinsic growth dynamics and physiological constraints under increasing environmental pressure.
Quantifying habitable water temperatures and thermal sensitivities among species func...
Hideyuki Doi
John Kominoski

Hideyuki Doi

and 2 more

February 27, 2023
Ectothermic species have body temperatures that reflect their environment to varying degrees. Environmental temperature drives all cellular and physiological functions, including metabolism, development, growth, migration, and reproduction. Extreme temperatures are occurring more frequently with climate change, and understanding the thermal tolerance and adaptive traits of species is critical.We hypothesized that 1) geographic location of stream ecosystems, such as elevation and latitude, influence the habitable water temperature of lotic (stream) invertebrates because the thermal habitat of species directly influences their life cycle and consequently fitness and 2) species functional traits (e.g., voltinism and feeding behavior) are influenced by habitable temperature. Here, we tested these hypotheses across diverse taxa and geographic regions using a dataset for stream invertebrates traits across North America. We showed that maximum water temperature in habitats and thermal breadth were significantly lower and narrower across streams ranging in elevation, from 0 to 3000 m, suggesting that invertebrate taxa across various elevations are less tolerant of warmer water temperature. Also, we identified thermal sensitivity differences among species traits, especially functional feeding group traits, as these are related to habitat selection in stream ecosystems. Our synthesis suggests that elevation and species traits can help predict thermal breadth and thermal tolerance for different species under a changing climate.
Leaf and root chemical and physical defence traits mediate monoculture yield decline...
Leonardo Bassi
Justus  Hennecke

Leonardo Bassi

and 12 more

February 27, 2023
Plant monocultures growing for extended periods face severe losses of productivity. This phenomenon, known as ‘yield decline’, is often caused by the accumulation of above- and belowground plant antagonists. The effectiveness of plant defences against antagonists might help explaining differences in yield decline among species. Using a trait-based approach, we studied the role of 20 physical and chemical defence traits of leaves and fine roots on yield decline of 18-year old monocultures of 27 grassland species. We hypothesized that yield decline is lower for species with high defences, that root defences are better predictors of yield decline than leaf defences, and that in roots, physical defences better predict yield decline than chemical defences, while the reverse is true for leaves. We additionally hypothesized that species increasing the expression of defence traits after long-term monoculture growth would suffer less yield decline. We summarized leaf and fine root defence traits using principal component analysis and analysed the relationship between defence traits mean as a measure of defence strenght and defence traits temporal changes of the most informative components and monoculture yield decline. The only significant predictors of yield decline were the mean and temporal changes of the component related to specific root length and root diameter (e.g. the so called collaboration gradient of the root economics space). The principal component analysis of the remaining traits showed strong trade-offs between defences suggesting that different plant species deploy a variety of strategies to defend themselves. This diversity of strategies could preclude the detection of a generalized correlation between the strength and temporal changes of defence gradients and yield decline. Our results show that yield decline is strongly linked to belowground processes particularly to root traits. Further studies are needed to understand the mechanism driving the effect of the collaboration gradient on yield decline.
The role of niche complementarity in the strengthening of the diversity-ecosystem fun...
Angelos Amyntas
Emilio Berti

Angelos Amyntas

and 7 more

May 08, 2023
1.     Species-rich communities exhibit higher levels of ecosystem functioning compared to species-poor ones, and this positive relationship strengthens over time. One proposed explanation for this phenomenon is the reduction of niche overlap among plants or animals, which corresponds to increased complementarity and reduced competition. 2.     In order to examine the potential of increased complementarity among plants or animals to strengthen the relationship between diversity and ecosystem functions, we integrated models of bio-energetic population dynamics and food-web assembly. Through the simulation of various scenarios of plant and animal complementarity change, we sought to elucidate the mechanisms underlying the observed increases in (1) primary productivity, (2) control of herbivores by predators, and (3) reduction of herbivore pressure on plants in species-rich communities.3.     Our findings reveal that increased niche complementarity of plants can steepen the diversity-function relationships if it does not increase their intraspecific competition, while increasing complementarity among animals during community assembly can also have a positive effect but with considerable variability. 4.     The study highlights the importance of trait variation both among and within species, and the interplay between intra- and interspecific competition strength in shaping the functioning of ecosystems over time. These results offer insights into the mechanisms underpinning the diversity-functioning relationship, and have practical implications for ecosystem management and conservation efforts.
Bardet–Biedl Syndrome: Delayed Diagnosis in a 14-Year-Old Child with End-Stage Renal...
Mohammad  Rasel
Ashif Istiak

Mohammad Rasel

and 5 more

February 27, 2023
Bardet–Biedl syndrome (BBS) is a rare autosomal recessive ciliopathic disorder. Because of its low prevalence and wide spectrum of clinical features, many patients remain undiagnosed. We report a case of a 14-year-old boy with a typical phenotype of BBS who remains undiagnosed until the development of end-stage renal disease.
Enclosure and Topography Dominated the Productivity and Biodiversity of Vegetation in...
Zhaoxia Guo

Zhaoxia Guo

February 27, 2023
4.2 The Effect of Enclosure Duration and Topography on Grassland ProductivityThe vegetation coverage and AGB of the grassland community increased with the enclosure duration, and significant differences were observed between the different enclosure durations (0, 3 and 6 years). However, the difference in coverage between the enclosure durations of 3 and 6 years was not significant, and some plots displayed no definite difference, indicating that the long enclosure was not necessarily beneficial to vegetation growth. Grassland enclosure should not be indefinite. The long enclosure period prevents herbage’s normal growth and development. Hu et al. (2016) tested the enclosure duration of grasslands in China. They found that the vegetation biomass reached a stable state after 15 years of enclosure. However, grassland enclosure and weeding measures led to the accumulation of surface plant litter. Litter can improve the microenvironment and provide effective soil water and nutrients for plant production (Xiong et al., 2019). Therefore, the grassland should be used properly after a period of enclosure.Our study found no significant difference in the coverage of shady and sunny slopes, similar to previous studies (Li et al., 2022). With increasing enclosure duration, we found that vegetation coverage tended to decrease less with increasing slopes, which was more pronounced on shady slopes. A consistent change in biomass and cover was also observed, which may be caused by sunny slopes leading to more serious soil nutrient losses, thus affecting the vegetation growth. Further studies need to be conducted to confirm these results.
Decellularized periosteum promotes guided bone regeneration via manipulation of macro...
Jiayang Li
Dongming He

Jiayang Li

and 6 more

February 27, 2023
Periosteum has shown potential as an effective barrier membrane for guided bone regeneration (GBR). However, if recognized as a “foreign body”, insertion of a barrier membrane in GBR treatment will inevitably alter the local immune microenvironment and subsequently influence bone regeneration. The aim of this investigation was to fabricate decellularized periosteum (DP) and investigate its immunomodulatory properties in GBR. DP was successfully fabricated from periosteum from the mini-pig cranium. In vitro experiments indicated that the DP scaffold modulated macrophage polarization toward a pro-regenerative M2 phenotype, which in turn facilitated migration and osteogenic differentiation of bone marrow-derived mesenchymal stem cells. A rat GBR model with a cranial critical-size defect was established, and our in vivo experiment confirmed the beneficial effects of DP on the local immune microenvironment and bone regeneration. Collectively, the findings of this study indicate that the prepared DP possesses immunomodulatory properties and represents a promising barrier membrane for GBR procedures.
Influenza A(H1N1)pdm09 virus aggravates pathology of blood vessels in Wistar rats wit...
V. Marchenko
I. Zelinskaya

V. Marchenko

and 7 more

February 27, 2023
Influenza virus can infect vascular endothelium and cause endothelial dysfunction. Persons at higher risk for severe influenza are patients with acute and chronic cardiovascular disorders; however, the mechanism of influenza-induced cardiovascular system alteration remains not fully understood. Thirty Wistar rats were divided in six groups – four experimental and two control. Rats from each experimental group were treated with doxorubicin following echocardiography confirmation of acute cardiotoxicity. Two groups of rats were intranasally inoculated with rat-adapted influenza A(H1N1)pdm09 virus, while two other groups – with α-MEM. After 24 and 96 hours mesenteric vessels were harvested for studying vasomotor activity using wire myograph and endothelial factors (eNOS, PAI-1 and tPA) expression by immunohistochemistry; PAI-1 and tPA concentration was analyzed in blood plasma by ELISA. Significant decrease in maximal response of mesenteric arteries of infected rats with premorbid acute cardiomyopathy to both vasoconstrictor and vasodilator at 24 and 96 hpi was registered compared to uninfected rats with acute cardiomyopathy and control rats. Expression of eNOS in mesenteric vascular endothelium was modulated at 24 and 96 hpi. PAI-1 expression was increased by 3.47-fold at 96 hpi, while concentration of PAI-1 in the blood plasma was increased by 6.43-fold at 24 hpi compared with uninfected rats with acute cardiomyopathy. tPA concentration in plasma was also modulated at 24 hpi and 96 hpi compared with uninfected rats with acute cardiomyopathy. The obtained data indicate that influenza A(H1N1)pdm09 virus in rats aggravates the course of premorbid acute cardiomyopathy causing a pronounced dysregulation of endothelial factors expression and vasomotor activity impairment of mesenteric arteries.
The anesthetic consideration of a gravid patient with osteogenesis imperfecta undergo...
Tao Hu
Tao Chen

Tao Hu

and 5 more

February 27, 2023
Osteogenesis imperfecta (OI) is a rare disorder of bone fragility. Gravid patients with OI usually need cesarean and may present multiple challenges. We present a case of an OI patient with severe scoliosis and an anticipated difficult airway undergoing cesarean section, with details on perioperative assessment and strategy of anesthesia.
Taxonomic and functional dissimilarities of soil bacterial communities are more relat...
Qingqing Liang
Heidi Mod

Qingqing Liang

and 11 more

December 08, 2021
The processes governing soil bacteria biogeography are still not fully understood. It remains unknown how the importance of environmental filtering and dispersal differs between bacterial taxonomic and functional biogeography, and whether their importance is scale-dependent. We sampled soils at 195 plots across the Tibet plateau, with distances among plots ranging from 20 m to 1 550 km. Taxonomic composition of bacterial community was characterized by 16S amplicon sequencing, and functional community composition by qPCR targeting 9 functional groups involved in N dynamics. Twelve climatic and soil characteristics were also measured. Both taxonomic and functional dissimilarities were more related to environmental dissimilarity than geographic distance. Taxonomic dissimilarity was mostly explained by soil pH and organic matter, while functional dissimilarity was mostly linked to moisture, temperature and N, P and C availabilities. The roles of environmental filtering and dispersal were, however, scale-dependent and varied between taxonomic and functional dissimilarities, with distance affecting taxonomic dissimilarity over short distances (<~300 km) and functional dissimilarity over long distances (>~600 km). The importance of different environmental predictors varied across scales more for functional than taxonomic dissimilarity. Our results demonstrate how biodiversity dimension (taxonomic versus functional) and spatial scale strongly influence the conclusions derived from bacterial biogeography studies.
Novel Fuzzy Technique for Denoising Mammogram Images Damaged By Low and High Impulse...
Benard Kiage
Wilson Cheruiyot

Benard Kiage

and 2 more

February 27, 2023
Abstract A Fuzzy logic based mean filter (FLBMF) is presented for impulse noise reduction of mammogram images degraded with additive impulse noise. FLBMF removes both low and high density impulsive noise from mammogram images. FLBMF performs this in three major phases. In phase one, the detection of noisy pixels is performed and determined. In phase two, an adaptive threshold is determined by examining the neighboring pixels. In phase three, fuzzy membership functions and fuzzy rules are used to decide whether the current pixel is noise-free, or the noise pixel is in a smooth or detailed region. All these phases are based on fuzzy rules making use of membership functions. FLBMF can be applied iteratively to effectively reduce impulsive noise. In particular, the membership function’s shape is adapted according to the remaining noise level after each iteration, making use of the distribution of the homogeneity in the image. In this approach, the mammogram images are selected from mini-MIAS database and renamed as MammoB1, MammoB2, MammoB3 and MammoB4, are then deformed by varying intensities of impulse noise. The performance evaluation of various filters including FLBMF tested at low, medium and high noise densities on different standard grey scale mammogram images is then carried out. Mathematical performance parameters including Mean Square Error (MSE), Peak-signal-to-noise-ratio (PSNR), and Structural Similarity Index Measure (SSIM) are finally applied to measure the accuracy and performance of this approach. The image modalities implementation and analysis of our approach is carried out in MATLAB functions. Keywords: Impulsive Noise; FLBMF, Fuzzy membership function, Fuzzy rules, Edge preserving filtering, Fuzzy image filtering, Noise reduction
Integrated Theory of Constraints, Lean and Six Sigma Process Excellence Methodologies...
Mrigendra Nath Mishra

Mrigendra Nath Mishra

February 27, 2023
This study is to explore the advantages and obstacles of implementing Theory of Constraints (TOC), Lean and Six Sigma in Indian manufacturing organizations. The research also elaborates on the challenges of implementing TOC, Lean and Six Sigma in manufacturing organizations in India, along with the changes in the culture that are required for providing a proper climate to ensure success in a long-term manner. The methodology used in this study is a descriptive study, which explores and looks for the factors that influence the impulse or motivation to implement TOC, Lean and Six Sigma in Indian manufacturing organizations and factors that inhibit the implementation of TOC, Lean and Six Sigma. To achieve this goal of integrated TOC, Lean and Six Sigma, a significant review of the existing literature of the subject area has been done to prepare a framework with the help of statistics in view of the critical success factors. This research is a flow and arranged a type of survey of organizations that is conducted using MS-Excel and SPSS 25.0. The number of participants selected using a purposive sampling method in this study was 227 TOC, Lean and Six Sigma experts and owners or CEOs of manufacturing organizations in India. TOC, Lean and Six Sigma be used for facilitating the improvement processes in manufacturing operations, quality improvements and productivity. As some obstacles exist in implementing the integrated TOC, Lean and Six Sigma approach, the improvement processes and outcomes of change in the culture are noteworthy and worthwhile. The implementation of TOC, Lean and Six Sigma has also some constraints, including cost limitations, skill limitations, limited facilities and other such limitations. The implementation of TOC, Lean and Six Sigma during and after COVID-19 pandemic is not yet a matter of urgency or priority, and hence, cannot yet be applied.
Long-term immune dysfunction induced by sepsis is dependent on age
David Colón
Carlos Wanderley

David Colón

and 16 more

December 30, 2022
Background and Purpose: Sepsis-surviving adult individuals commonly develop immunosuppression and increased susceptibility to secondary infections, outcome mediated by the axis IL-33/ILC2s/M2 macrophages/Tregs. Nonetheless, the long-term immune consequences of pediatric sepsis are indeterminate. We sought to investigate the role of age in the genesis of immunosuppression following sepsis. Experimental Approach: Here, we compared the frequency of Tregs, the activation of the IL33/ILC2s axis in M2 macrophages, and the DNA methylation of epithelial lung cells from post-septic infant and adult mice. Likewise, sepsis-surviving mice were inoculated intranasally with Pseudomonas aeruginosa or by subcutaneous inoculation of the B16 melanoma cell line. Finally, blood samples from sepsis-surviving patients were collected and the concentrations of IL-33 and Tregs frequency were assessed. Key Results: In contrast to 6-week-old, 2-week-old mice were resistant to secondary infection and did not show impairment in tumour controls upon melanoma challenge. Mechanistically, increased IL-33 levels, Tregs expansion, and activation of ILC2s and M2-macrophages were observed in 6-week-old but not 2-week-old post-septic mice. Moreover, impaired IL-33 production in 2-week-old post-septic mice was associated with increased DNA methylation in lung epithelial cells. Notably, IL-33 treatment boosted the expansion of Tregs and induced immunosuppression in 2-week-old mice. Clinically, adults but not pediatric post-septic patients exhibited higher counts of Tregs and sera IL-33 levels. Conclusion and Implications: These findings demonstrate a crucial and age-dependent role for IL-33 in post-sepsis immunosuppression. Thus, a better understanding of this process could lead to differential treatments for adult and pediatric sepsis.
Restrained Mitf-associated autophagy by Mulberroside A ameliorates osteoclastogenesis...
Hong Xue
Zhenhua Feng

Hong Xue

and 12 more

February 27, 2023
Background and Purpose: Overactivated osteoclasts disrupt the mineral homeostasis of bone, inducing osteoporosis. Despite the rapid development of pharmacological therapy in osteoporosis, a safer and more effective treatment remains to be explored. Recently, the connection between osteoporosis and autophagy has gained more attention. Autophagy activation promotes osteoclastogenesis and the development of osteoporosis. Mulberroside A (Mul-A), a natural component extracted from mulberry bark and branches, has various pharmacological functions. Nevertheless, the role of Mulberroside A on osteoporosis and autophagy is unknown. Here, we aimed to investigate the changes in osteoclastogenesis and autophagy occurrence in response to Mulberroside A. Experimental and Approach: TRAP staining and bone resorption assay were used to confirm the inhibitory effect of Mul-A on osteoclastogenesis and function. Western blot, Quantitative real-time PCR, transmission electron microscope and confocal microscope were performed to explore the mechanism. Ovariectomy(OVX) was employed to verify the therapeutic effect of Mul-A on osteoporosis in vivo. Key Results: Mul-A effectively suppresses osteoclastogenesis in vitro and counteracts the bone loss caused by ovariectomy(OVX). Mechanically, Mul-A represses the occurrence of autophagy flux during osteoclastogenesis, which can be attributed to the restrained expression of microphthalmia-related transcription factor(Mitf) and its nuclear translocation. Moreover, the application of two autophagy agonists, rapamycin and Torin 1, attenuates the osteoclastogenic regulatory role of Mul-A as well. Conclusions and Implications: Our study demonstrates that Mul-A damages the differentiation of osteoclasts and ameliorates osteoporosis caused by estrogen deficiency through modulation of Mitf-associated autophagy, suggesting its therapeutic potential against osteoporosis.
Effects of landlocking on the genome-wide divergence of Galaxias brevipinnis populati...
Mitra Mohammadi Darestani
Ludovic Dutoit

Mitra Mohammadi Darestani

and 4 more

February 03, 2023
Landlocking is a process whereby a population of normally diadromous fish becomes limited to freshwater, potentially leading to behavioural, morphological, and genetic changes, and occasionally speciation. The study of recently landlocked populations can shed light on how populations adapt to environmental change, and how such life-history shifts affect population-genetic structure. Kōaro (Galaxias brevipinnis) is a facultatively diadromous Southern Hemisphere galaxiid fish that frequently becomes landlocked in inland lakes. This study compares seven landlocked kōaro populations to diadromous populations from main and offshore islands of New Zealand. Genotyping-by-sequencing was used to obtain genotypes at 18,813 single nucleotide polymorphism sites for each population. Analyses of population structure revealed that most landlocked populations were genetically highly distinct from one another, as well as from diadromous populations. A few particularly isolated island and lake populations were particularly strongly genetically differentiated. Landscape characteristics were measured to test whether lake elevation, size, or distance from the sea predicted genetic diversity or differentiation from diadromous kōaro. While there were no significant relationships indicating isolation-by-distance or isolation-by-environment, we detected a trend toward lower genetic diversity in lakes at higher elevations. Our findings illustrate the critical role that landlocking can play in the structure of intraspecific genetic diversity within and between populations.
Congenital tunnel-shaped ventricular septal defect
Mohammad Reza Eftekhari
Roya Parkhideh

Mohammad Reza Eftekhari

and 3 more

February 27, 2023
We report a 47-year-old man who presented with right-sided heart failure. Transthoracic echocardiography revealed a tunnel-shaped communication (ventricular septal defect) between the left ventricle and the right ventricle with a significant left-to-right shunt. The VSD is connected to the lateral wall of the right ventricle by a large tunnel.
Perioperative pain management protocols of veterinarians in the United States for hor...
D Sellon
Macarena Sanz

D Sellon

and 2 more

February 27, 2023
Background: Analgesic protocols related to orchiectomy or castration of young horses vary widely depending on geographic location, educational background of the veterinarian, and other demographic factors. Specific practices of equine veterinarians in the United States (US) have not been reported. Objectives: To determine perioperative pain management practices of equine veterinarians in the US as they relate to castration of young male horses. Study Design: Cross-sectional survey Methods: An internet-based questionnaire included items related to analgesic drugs used in association with castration of healthy yearling colts. Demographic and educational factors associated with routine recommendation of analgesic medications after castration were analyzed using logistic regression. Results: Responses from 146 equine veterinarians in the US revealed that 112/146 (76.7%) administered a nonsteroidal anti-inflammatory drug (NSAID) at the time of castration. Routine recommendation of post-castration analgesia was associated with veterinarians who were employed in a multi-veterinarian practice, completed their veterinary education after 2000, and provided a higher pain severity score for horses at 24 hours after a routine castration. Main Limitations: Possible distribution, self-selection, response, and recall biases as a result of convenience sampling methodology. Conclusions: Perioperative pain management practices vary widely among US veterinarians but the majority of veterinarians, especially more recent graduates, recommend administration of an NSAID.
Using ANN for Well Type Identifying and Increasing Production from Sadi Formation of...
Ghazwan Noori Jreou

Ghazwan Noori Jreou

February 27, 2023
The current study focuses on utilizing artificial intelligence (AI) techniques to identify the optimal locations for achieving the production company’s primary objective, which is to increase oil production from the sadi carbonate reservoir of the Halfaya oil field in southeast Iraq, with the determination of the optimal scenario of various designs for production wells, which include vertical, horizontal, multi-horizontal, and fishbone lateral wells, for all reservoir production layers. The ANN tool was used to identify the optimal locations for obtaining the highest production from the reservoir layers and the optimal well type. For layer SB1 the average daily production is 291.544 STB/D with horizontal well, 441.82 STB/D for multilateral, and 1298.461STB/D for the fishbone well type. Also, for SB2 layer 197.966 STB/D, 336.9834 STB/D, and 924.554 STB/D, and for SB3 333.641 STB/D, 546.6364 STB/D and 1187.159 STB/D for the same well types sequence. While the cumulative production for each formation layer is 22.440 MMSTB from the horizontal well, 59.05 MMSTB from multilateral and 84.895 MMSTB from fishbone well types for SB1 layer, Also 48.06 MMSTB, 70.1094 MMSTB, and 160.254 MMSTB for SB2, and 75.2764 MMSTB, 111.7325 MMSTB and 213.1291 MMSTB for SB3 for the same well types.
On Code Reuse from StackOverflow: An Exploratory Study on Jupyter Notebook
Yutian Tang
Mingke Yang

Yutian Tang

and 3 more

February 27, 2023
Jupyter Notebook is a popular tool among data analysts and scientists for working with data. It provides a way to combine code, documentation, and visualizations in a single, interactive environment, facilitating code reuse. While code reuse can improve programming efficiency, it can also decrease readability, security, and overall performance. We conduct a large-scale exploratory study of code reuse practices in the Jupyter Notebook development community on the Stack Overflow platform to understand the potential negative impacts of code reuse. Our findings identified 1,097,470 Jupyter Notebook clone pairs that reuse Stack Overflow code snippets, and the average code snippet has 7.91 code quality violations. Through our research, we gain insight into the reasons behind Jupyter Notebook developers' decision to reuse code and the potential drawbacks of this practice.
Comparison of schizophrenia and methamphetamine-induced psychosis: a proton magnetic...
Antoinette Burger
Michael  Lindner

Antoinette Burger

and 7 more

February 27, 2023
Background: There is similarity in schizophrenia and methamphetamine-induced psychosis neurobiology. Few studies have directly compared neurometabolites in thalamo-cortical circuitry across these disorders or assessed the relationship with peripheral cytokines. This study compared neurometabolites and neuronal integrity in thalamo-cortical circuitry, and investigated associations with peripheral cytokine levels in both disorders. Methods: Ninety-five participants were recruited – 36 with schizophrenia, 27 with methamphetamine-induced psychosis, and 32 healthy controls. All participants underwent a magnetic resonance imaging scan, which included magnetic resonance spectroscopy. Glutamatergic and neuroinflammatory neurometabolites were examined. Serum cytokine concentrations included Interleukin 1-beta, Interleukin-8, Interleukin-10, Tumor Necrosis Factor alpha and Interferon gamma. Parametric data were analyzed with one-way analysis of variance and non-parametric data were analyzed with Kruskal Wallis tests. Associations were determined using Spearman’s rank-order coefficient. Results: The methamphetamine-induced psychosis group had lower n-acetyl aspartate with n-acetyl-aspartyl glutamate in left dorsolateral prefrontal cortex and left frontal white matter, compared to controls. In schizophrenia, positive associations were found between glutamate and n-acetyl aspartate and n-acetyl aspartate with n-acetyl-aspartyl glutamate in the anterior cingulate cortex. In the methamphetamine-induced psychosis group, positive relationships were found between myo-inositol in the left thalamus and bilateral anterior cingulate cortex. Conclusion: In schizophrenia, there is suggestion of dysfunction in neuronal tissues in the glutamate-glutamine cycle within the thalamo-cortical circuit. In methamphetamine-induced psychosis, there is evidence of compromised neuronal integrity associated with chronic disease progression, and suggestion of aberrant neuroinflammatory regulation in the thalamus-ACC circuit. This study highlights similarities and differences in the psychobiology of the two disorders
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