Miracle-dz/UniFAR-FTUs huggingface dataset:
Impact Localization of Thin Plate Structures Using Pzt-Array Based Passive Wave Method

Impact of foreign objects is one of the main reasons for the damage of thin plate structures, resulting in property losses or unexpected accidents. Therefore, a rapid and effective impact localization of thin plate structures is of great value. In this paper, a localization method is proposed based on the passive wave method, aiming at locating the impact quickly and accurately. First, a square PZT array composed of 4 PZT sensors was designed, and a hyperbolic localization algorithm was derived according to time-different of arrival (TDoA) for different sensors in the array. Then, Matlab calculation software was used to perform DB wavelet decomposition on impact signals, the time delay was calculated by Lamb wave of A0 mode in D5 detail signals, and the velocity of A0 mode wave was determined by the dispersion curve for 1 mm thick aluminum plate. Finally, the impact point was located to experimentally verify the effectiveness of the proposed localization method. Experimental results show that the hyperbolic positioning algorithm based on TDoA can accurately identify impact locations, and wavelet decomposition can effectively identify single mode Lamb waves. The proposed method has the characteristics of fastness and accuracy, which is suitable for single object impact localization on thin plate structures.
Color / Pattern Variation of Cercopis vulnerata Rossi , 1807 ( Auchenorrhyncha : Cercopidae ) Populations of Northwestern Turkey

This study was carried out to examine color/pattern variation in some C. vulnerata populations in northwestern of Turkey. Three different phenotypes were recognized according to wing color/pattern, two of which are C. vulnerata var. typica and C. vulnerata var. helvetica. The third phenotype has a different pattern from all known variants of this species. The data about the color/pattern variation of C. vulnerata were examined for the first time in Turkey with this study. Besides color/pattern differences, size differences were examined. The samples were classified according to their color/pattern differences and also the total length of the individuals were measured. In order to assure whether the differences are statistically significant among the variants and between sexes, One-Way ANOVA and independent t-test were used. Differences in body size among all variants were significant (P <0.01). The populations of C. vulnerata var. helvetica are overwhelmed in the region. In this variant, it was also found that there was a sexual dimorphism in size, and male individuals were larger than females. This feature was significant (♀♀ n = 50, ♂♂ n = 50, P <0.01). In the other variants, no significant difference was found between the sexes.
Seed) Effects on Plasma Lipid Concentrations in Humans: a Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Trials

The effects of Nigella Sativa (NS) on plasma lipid concentrations are controversial. A systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted to obtain a conclusive result in humans. were searched to identify RCTs investigating the impact of NS on total cholesterol, LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C), and triglycerides concentrations. A random-effects model and the generic inverse variance weighting method were used for quantitative data synthesis. Meta-regression, sensitivity analysis, and publication bias assessments were performed using standard methods. A total of 17 RCTs examining the effects of NS on plasma lipid concentrations were included. Meta-analysis suggested a significant association between NS supplementation and a reduction in total cholesterol (weighed-mean-difference [WMD]: -15.65 mg/dL, 95% CI: -24.67, -6.63, p =0.001), LDL-C (WMD: -14.10 mg/dL, 95% CI: -19.32, -8.88, p <0.001), and triglyceride levels (WMD: -20.64 mg/dL, 95% CI: -30.29, -11.00, p <0.001). No significant effect on HDL-C concentrations (WMD: 0.28 mg/dL, 95% CI: -1.96, 2.53, p =0.804) was found. A greater effect of NS seed oil versus seed powder was observed on serum total cholesterol and LDL-C levels, and an increase in HDL-C levels was found only after NS seed powder supplementation. NS has a significant impact on plasma lipid concentrations, leading to lower total cholesterol, LDL-C, and TG levels while increased HDL-C is associated with NS powder only. Further RCTs are needed to explore the NS benefits on cardiovascular outcomes.
Dyslipidaemia, Atherogenic Index and Urbanization in Central Nigeria: Associations, Impact, and a Call for Concerted Action

Background: Dyslipidaemia is a major cardiovascular risk factor. It was earlier said to be infrequent among Blacks due to dietary and possibly genetic influences. However, Nigeria is experiencing rapid urbanization with increasing rapid rural-urban migration. The aim was to describe the pattern of dyslipidaemia in a typical rural population and genetically related urban dwellers in a way to highlight the impact of urbanization on dyslipidaemia in central Nigeria. Methods: It was a cross sectional study in Abuja, Nigeria. Three hundred and forty-two urban native Abuja settlers and 325 genetically related rural dwellers were used for the study. Fasting blood lipid profile, glucose, waist circumference, blood pressure and body mass index were determined. Abnormalities in lipid indices and atherogenic indices were determined. SPSS 17.0 was used for statistical analysis. p<0.05 was used as statistically significant. Results: Mean total cholesterol, LDL-cholesterol and triglycerides were significantly higher among urban dwellers than rural dwellers. The prevalence(s) of hypercholesterolaemia, hypertriglycaeridaemia and elevated LDL were higher among urban dwellers than their rural counterparts (5.3% vs. 1.2%, 38.3% vs. 28.6%, 4.1% vs. 1.2%, p<0.05 respectively). However, low HDL was commoner among rural than urban population (46.5% vs. 24.3%, p<0.05 respectively). The proportion of rural and urban participants with normal lipid status and atherogenic indices were similar. (37.8% vs. 41.5%, p>0.05 respectively). Conclusion: This study revealed a significant difference in dyslipidaemia and lipid status between genetically related rural and urban dwellers. Urbanization is significantly associated with rising lipid level and a higher prevalence of dyslipidaemia.
Investigation of the thermo-mechanical behaviour of clutches using fibre optic sensing technology with high spatial measurement density

Non-lubricated clutches are still subject of numerous investigations. Measuring the temperature distribution in the friction contact would deliver a more detailed view of the live friction process. Main restriction remaining to establish this information is the low spatial measurement density of conventional thermal measurement facilities. On this account, fibre optic sensing technology has been used for the first time to measure the temperature distribution with high spatial resolution in a pressure plate of a clutch system. One sensing fibre offers not less than 700 measurement points in the pressure plate. An academic example was carried out to validate the new measuring method. On one hand, the focus of this investigation was the comparison of the measured temperature between fibre and thermocouple. On the other hand, the manner of inserting the fibre, especially the influences on the part by inserting holes, was investigated. The target is minimally changing the friction contact by the measurement instrumentation. By means of this measurement method, it is possible to analyse the thermo-mechanical behaviour of a friction system with a high level of details. This method enables the control of temperature distribution in the counter plate. Currently, an optimization method is in development, which should make it possible to rate design changes, for example of the pressure plate, linked to the temperature distribution.
Clustering Based Feature Subset Algorithm in High Dimensional Data

— In the high dimensional data the dimensional reduction is an important factor, for that purpose the clustering based feature subset selection algorithm is proposed in this paper. The features have been clustered according to the class labels. The Relevance of the clustered features has been evaluated. The correlation of the relevant clustered feature is then evaluated. Based on the correlation evaluation the Minimum Spanning Tree (MST) has been generated. The representatives of each class have been identified by the MST. The effectiveness is determined in terms of time required to find the subset of feature and the efficiency is determined terms of quality of the subset. By comparing the proposed algorithm with the existing feature selection algorithms like FCBF, reliefF, CFS etc with respect to the four classification algorithms namely Naive Bayer, the tree based c4.5, the instance based IB1 and rule based RIPPER the proposed algorithm is better in terms of efficiency and accuracy. The results are computed with various types of data set.
A LLC resonant converter with dual resonant frequency for high light load efficiency

ABSTRACT This paper presents a new approach to achieve high light-load efficiency for inductor-inductor-capacitor (LLC) resonant converters. Compared with the conventional LLC resonant converters, an additional active resonant network is employed to give the proposed converter another resonant frequency and another steady state. Thereby, the proposed converter has advantages of narrow switching frequency range and high light-load efficiency. The operation principle and the resonant network switching strategy of the proposed converter are analysed, as well as the design considerations. A 1.2-kW prototype with silicon carbide (SiC) MOSFETs is built to verify the proposed converter. The peak efficiency is tested as 94.4% at 680 kHz. Especially, the light-load efficiency is improved from 89% to 91%.
A Polynominal Approach For The Three-Dimensional Wheel-Rail Rolling Contact

SUMMARY The elastic three-dimensional rolling contact of quasi-identical bodies is a common contact situation in railway dynamics. This article proposes a new fast calculation method for the three-dimensional normal pressure and tangential traction distribution. It consists of the combination of strip theory and the general polynominal approach for the two-dimensional solutions developped by Nielson. The calculation effort is expected to be of the same order of magnitude as Le-The's program, however thereby covering a large class of railway contact situations with increased precision. The proposed method allows for parametric studies and is therefore helpful in getting more insight into the phenomenon of contact mechanics. One possible application is the simulation of the formation of rail corrugation with an improved formulation of the contact mechanics.
C 0 and bi-Lipschitz K-equivalence of mappings

In this paper we investigate the classification of mappings up to K-equivalence. We give several results of this type. We study semialgebraic deformations up to semialgebraic C0 K-equivalence and bi-Lipschitz K-equivalence. We give an algebraic criterion for bi-Lipschitz K-triviality in terms of semi-integral closure (Theorem 3.5). We also give a new proof of a result of Nishimura: we show that two germs of smooth mappings f, g : Rn → Rn , finitely determined with respect to K-equivalence are C0-K-equivalent if and only if they have the same degree in absolute value. Mathematics Subject Classification (2000) 28A78 · 32B10 · 32B20
Potential protective effect of astaxanthin on ovary ischemia-reperfusion injury

Objective(s): We thought that astaxanthin (ASX) might be a protective agent in oxidative stress damage that develops against ischemia and reperfusion injury in the rat ovary. Materials and Methods: The experimental groups consisted of healthy, I (Ischemia), I+ASX50, I+ASX100, I/R (Ischemia/Reperfusion), I/R+ ASX50, and I/R+ ASX100. Vascular clamps were applied to the ovaries for 3 hr to induce ischemia. For the reperfusion groups, the clamps were opened and blood flow was restored to the ovaries for 3 hr. At the end of the experiment, biochemical, histopathological, and immunohistochemical analyses were made from the tissue samples taken. Results: While MDA levels increased significantly in I and I/R groups, SOD levels decreased. It was found that ASX significantly decreased MDA levels and increased SOD activity in treatment groups depending on the dose. Caspase 3, IL-1 β, and IL-6 expressions were severely increased in ischemia and I/R groups, while the severity of I+ASX50 and I/R+ASX100 immunoreactivity was decreased. While severe hemorrhage areas were observed in I and IR groups, minimal hemorrhage areas were observed in the treatment groups, especially in I/R+ASX100 groups. In addition, inflammatory cells and necrotic cells in the I/R group were not observed in I/R+ASX50 and I/R+ASX100 groups. Conclusion: As a result, it was determined that ASX has a strong protective role against oxidative damage in the treatment of ovarian ischemia-reperfusion injury.
Socio-ecological predictors of HIV testing in women of childbearing age in Nigeria

Introduction HIV remains a public health problem in Nigeria. Women within the age of 15 to 49 years, the childbearing age, have a prevalence rate of 1.9%, higher than that of their male counterparts of the same age group. Women can transmit HIV to their partners and their children. Nigeria accounts for 30% of global transmission of HIV from mother to child. Therefore, the study seeks to identify the socio-ecological predictors of HIV testing because HIV testing is the gateway to HIV prevention to achieve the sustainable development goal of zero new infections by the year 2030. Methods the study was a cross-sectional study, analyzing the 2013 Nigeria demographic and health survey data using SPSS V27. Results the result of the study indicated a higher odds ratio for good comprehensive knowledge of HIV (p<0.001, OR=3.81), good attitude to HIV (p<0.001, OR=2.50), and high perceived risk of HIV (p<0.001, OR=2.03). A low odds ratio was observed for good cultural belief despite the significance of the association (p<0.001, OR=0.83). Conclusion socio-ecological factors of HIV knowledge, attitude to HIV, perceived risk, and cultural belief were significant predictors of HIV testing in women of childbearing age. Programs targeted at women aged 15-19 years will enhance HIV testing as the gateway to HIV prevention and achieve the 95-95-95 target and zero new infections by 2030.
The Role of the Second Subunit of the Origin Recognition Complex (ORC2) in the Development of Arabidopsis thaliana

The Origin Recognition Complex (ORC) is composed of six subunits that are conserved throughout eukaryotes. It was originally discovered in yeasts as a protein complex that acts in replication initiation by binding replication origins and recruiting the replication machinery to the DNA. Arabidopsis plants, mutant for the second subunit of the complex (the ORC2 protein) are not viable and abort early in embryogenesis. Aborting embryos are disorganized and the endosperm, an extraembryonic tissue, contains dramatically enlarged nuclei, a phenotype that is not intuitively expected for a mutant in a replication protein. This work represents an attempt to understand this discrepancy. Extensive analysis of ORC2 expression and of the phenotype of three orc2 mutant alleles was performed. The results of this analysis allowed me to propose a model explaining why this mutation leads to the observed phenotype. Also, a system allowing RNAi-mediated inducible knockdowns was developed, as well as a system to perform a suppressor screen for modifiers of the orc2 mutant phenotype.
The influence of food values on post-purchase variables at food establishments Alicia Izquierdo –

La importancia de los valores de los alimentos en el proceso postcompra no ha sido ampliamente estudiada. La mayoría de las investigaciones previas en esta línea se han centrado o en examinar los atributos de categorías específicas de alimentos, sin tener en cuenta dichos valores, o en las actitudes y el comportamiento de compra de alimentos. Para abordar esta brecha en la investigación, este artículo profundiza en la influencia de los valores de los alimentos en las variables postcompra. Específicamente, analiza la influencia de los valores de los alimentos en la satisfacción (tanto la satisfacción con la compra como la satisfacción con el establecimiento), los costes de cambio y la lealtad. Para ello, se analiza una muestra de 708 consumidores, recopilada a través de cuestionarios en España, utilizando diversas estadísticas descriptivas y modelos causales. Los resultados confirman la influencia de los valores de los alimentos en la satisfacción y que esa satisfacción influye positivamente en la lealtad. Sin embargo, la influencia moderadora de los costes de cambio sobre la relación entre satisfacción y lealtad no fue confirmada.
Preparation of stable enteric folic acid-loaded microfiber using the electrospinning method

Objective(s): Folic acid is an essential vitamin, labile to hydrolysis in the acidic environment of the stomach with low water solubility and bioavailability. In order to solve these problems, enteric oral folic acid-loaded microfibers with a pH-sensitive polymer by electrospinning method were prepared. Materials and Methods: Electrospinning was performed at different folic acid ratios and voltages. Fibers were evaluated in terms of mechanical strength, acidic resistance, and drug release. Additionally, DSC (Differential Scanning Calorimetry), FTIR (Fourier-transform infrared spectroscopy), and XRD (X-ray diffraction) analyses were performed on the optimal formulation. Results: Drug ratio and voltage had a considerable effect on fibers’ entrapment efficiency, acid resistance, and mechanical strength. Based on the obtained results, the optimum formulation containing 1.25% of the drug/polymer was prepared at 18 kV. The entrapment efficiency of the optimal sample was above 90% with an acid resistance of higher than 70%. The tensile test confirmed the high mechanical properties of the optimum microfiber. DSC and XRD tests indicated that folic acid was converted to an amorphous form in the fiber structure and the FTIR test confirmed the formation of a chemical bond between the drug and the polymer. The release of the drug from the optimal fiber was about 90% in 60 min. Conclusion: In conclusion, the optimal formulation of folic acid with proper mechanical properties can be used as a candidate dosage form for further bioavailability investigations.
Lavender protects H9c2 cardiomyocytes against oxygen-glucose deprivation (OGD)-induced injury via targeting the JAK2/STAT3 pathway

Objective(s): This study was conducted to examine the therapeutic effects of lavender oil (LO) against oxygen-glucose deprivation (OGD)-induced injury in vitro model. Materials and Methods: In this study, the OGD model was induced in the H9C2 cell line, and then the cells were treated with LO (10, 100, 1000, and 10000 μg/ml). The anti-inflammatory activity of LO (JAK2/STAT3) was evaluated by immunocytochemical assay. Likewise, the p-ERK/ERK level was measured by western blotting. Results: Compared with only the OGD-induced injury model, cell survival increased after treatment with LO. Our results showed that 100 μg/ml of LO significantly decreased the expression of Jak2/Stat3 and the apoptotic activity 72 hr after reperfusion compared with the control group. Likewise, significant increases were observed in p-ERK/ERK in LO-treated groups. Conclusion: Collectively, these findings confirm that LO can be a good candidate to reduce OGD-induced injury in the H9C2 cell line through targeting Jak2/Stat3 and ERK pathways.
Activation of apoptosis and G0/G1 cell cycle arrest along with inhibition of melanogenesis by humic acid and fulvic acid: BAX/BCL-2 and Tyr genes expression and evaluation of nanomechanical properties in A375 human melanoma cell line

Objective(s): Humic acid (HA) and Fulvic acid (FA) are major members of humic substances, which are extracted from organic sources including soil and peat. The pro-apoptotic and anti-melanogenic effects of HA and FA at the cellular and molecular levels in the A375 human melanoma cell line were examined in this study. Materials and Methods: The cytotoxicity effect of HA and FA were evaluated by cell viability assay. Apoptosis and cell cycle were investigated by flow cytometry. Real-time PCR was carried out to measure the expression of BAX, BCL-2, and Tyr genes. Moreover, the changes in nanomechanical properties were determined through atomic force microscopy (AFM). Results: It was found that HA and FA decrease cell viability with an IC50 value of 50 µg/ml (dose-dependent) for 14 hr, arrested cells in the G0/G1 phase, and increased the sub-G1 phase (induce apoptosis). Based on the AFM analysis, Young’s modulus and adhesion force values were increased, also ultrastructural characteristics of cells were changed. Results of Real-time PCR revealed that HA and FA lead to a decrease in the expressions of BCL-2 and Tyr genes, and increase the BAX gene expression. Conclusion: These results exhibited that HA and FA possess pro-apoptotic effects through increasing the BAX/ BCL-2 expression in A375 cells. These molecular reports were confirmed by cellular nanomechanical assessments using AFM and flow cytometry. In addition, HA and FA inhibited melanogenesis by decreasing the expression of the Tyr gene. It is worthwhile to note that, HA and FA can be regarded to design new anti-cancer and anti-melanogenesis products.
Mastoparan M extracted from Vespa magnifica alleviates neuronal death in global cerebral ischemia-reperfusion rat model

Objective(s): Global cerebral ischemia (GCI), a consequence of cardiac arrest (CA), can significantly damage the neurons located in the vulnerable hippocampus CA1 areas. Clinically, neurological injury after CA contributes to death in most patients. Mastoparan-M extracted from Vespa magnifica (Smith) can be used to treat major neurological disorders. Hence, this study aimed to assess the effects of Mastoparan-M on GCI. Materials and Methods: To evaluate the neurotoxicity and neuroprotective effect of Mastoparan-M, the CCK8 and Annexin V-FITC/PI apoptosis assays were first performed in hippocampal HT22 neuronal cells in vitro. Then, Pulsinelli’s 4-vascular occlusion model was constructed in rats. After treatment with Mastoparan-M (0.05, 0.1, and 0.2 mg/kg, IP) for 3 or 7 days, behavioral tests, H&E staining or Nissl staining, immunohistochemistry, and ELISA were employed to investigate neuroprotective effects of Mastoparan-M on GCI in rats. Results: In vitro, the growth of HT22 neuronal cells was restrained at concentrations of 30-300 µg/ml (at 24 hr, IC50=105.2 µg/ml; at 48 hr, IC50=46.81 µg/ml), and Mastoparan-M treatment (0.1,1 and 5 µg/ml) restrained apoptosis. In vivo, Mastoparan-M improved neurocognitive function and neuronal loss in the hippocampal CA1 area of rats. In addition, these effects were associated with the prevention of neuroinflammation, oxidative stress, and apoptosis. Conclusion: Mastoparan-M acts as a neuroprotective agent to alleviate neuronal death in rats.