Values Of Width Research Articles

Prognostic Value of Initial Red Cell Distribution Width and its Platelet-derived Ratio in Critically Ill Adult Patients

Prognostic Value of Initial Red Cell Distribution Width and its Platelet-derived Ratio in Critically Ill Adult Patients

Sex Determination Using Frontal Sinus Diameters on Direct Radiography.

The shape and developmental stages of the frontal sinus (FS) differ in each individual, it can be used to determine sex and identity. This study aimed to assess the morphological structure of the FS diameters in sex determination using posterioanterior (AP) skull radiography. This data can be valuable for identifying and characterizing human features. The study included 350 patients (171 females, 179 males) aged between 20 and 55 years who underwent AP skull radiography. FSs were classified as symmetrical, asymmetrical, unilateral, or bilateral aplasic. The right and left FS height and width measurements were made based on the largest diameters. The mean age was 32.8±11.45 years for the whole sample. The mean age of the males was 31.23±11.9 (20-51) years and that of the females was 34.45±10.75 (20-55) years. When classified anatomically, 20 patients had bilateral aplasia (12 males,eight females), 19 patients had right aplasia (10 males, nine females), and 11 patients had left aplasia (seven males, four females). FS was symmetrical in 206 (72.1%) patients while right dominance was observed in 33 (9.43%) patients and left dominance in 61 (17.43%) patients. The FS height and width values on both sides ​​were statistically significantly higher in males than in females (p<0.001 for each parameter). The females were accurately classified at a rate of 71.2%and the males at 68.2%. Notably, our research has revealed that frontal sinus diameters are consistently larger in males than in females, and that direct radiography can be employed for gender determination with an accuracy rate of 69.7%. This information underscores the utility of morphometric evaluation of the frontal sinus diameters on direct radiography for gender and identity determination, potentially in conjunction with other parameters. In conclusion, our study has demonstrated the potential of the morphological structure of the frontal sinuses as a valuable tool for identifying and characterizing human individuals.

Bor arsenit bazlı nano-transistörlerde elektrotların enerji aralığı üzerindeki genişlik etkisinin incelenmesi, bir DFT çalışması

This study deals with electronic properties of Boron Arsenide nanoribbons using Density function theory (DFT) calculations. Under specific conditions, nanoribbons can be used as Nano-transistors. It is feasible to modify nanoribbons' electronic properties, such as bandgap and conductivity, by varying their width and edge shape. Source, drain, and gate are basic parts of a conventional field-effect transistor (FET). The channel's conductivity can be changed by applying a voltage to the gate electrode. In current research, boron Arsenide nanoribbons has been investigated as lead electrode of a transistor and stability of the sheet has been confirmed by positive phonon vibrational modes. Utilizing the band structure spectrum, band gap as an electronic property is measured and reported. Different width values for electrodes have been considered and it has represented that the band gap is size dependent and increasing in ribbon’s size to bulk structure, results in decrements in band gap energy value.

Anthropomorphic Characterization of Ankle Joint.

Even though total ankle replacement has emerged as an alternative treatment to arthrodesis, the long-term clinical results are unsatisfactory. Proper design of the ankle device is required to achieve successful arthroplasty results. Therefore, a quantitative knowledge of the ankle joint is necessary. In this pilot study, imaging data of 22 subjects (with both females and males and across three age groups) was used to measure the morphological parameters of the ankle joint. A total of 40 measurements were collected by creating sections in the sagittal and coronal planes for the tibia and talus. Statistical analyses were performed to compare genders, age groups, and image acquisition techniques used to generate 3D models. About 13 measurements derived for parameters (TiAL, SRTi, TaAL, SRTa, TiW, TaW, and TTL) that are very critical for the implant design showed significant differences (p-value < 0.05) between males and females. Young adults showed a significant difference (p-value < 0.05) compared to adults for 15 measurements related to critical tibial and talus parameters (TiAL, TiW, TML, TaAL, SRTa, TaW, and TTL), but no significant differences were observed between young adults and older adults, and between adults and older adults for most of the parameters. A positive correlation (r > 0.70) was observed between tibial and talar width values and between the sagittal radius values. When compared with morphological parameters obtained in this study, the sizes of current total ankle replacement devices can only fit a very limited group of people in this study. This pilot study contributes to the comprehensive understanding of the effects of gender and age group on ankle joint morphology and the relationship between tibial and talus parameters that can be used to plan and design ankle devices.

The prognostic value of red blood cell distribution width for pulmonary infection in elderly patients received abdominal surgery with tracheal intubation and general anesthesia

BackgroundRed blood cell distribution width (RDW) has been shown to be an important predictor of the occurrence of various inflammatory and infectious diseases. However, the predictive value of RDW for pulmonary infection in elderly patients undergoing abdominal surgery under general anesthesia with endotracheal intubation remains unclear. MethodsA total of 200 eligible elderly patients who underwent abdominal surgery with endotracheal intubation and general anesthesia in our hospital from January 2019 to January 2022 were included in this study. During hospitalization, there were 64 cases with different degrees of pulmonary infection, and 136 cases without pulmonary infection. Participants' RDW levels were analyzed on admission. Serum levels of inflammatory factors in infected patients were analyzed during hospitalization. Multivariate logistic analysis was performed to evaluate clinical factors for pulmonary infection during hospitalization following-up abdominal surgery with endotracheal intubation and general anesthesia in elderly patients. Youden's J statistic was used to define the correlation. ResultsRDW at admission was independently associated with the risk of pulmonary infection in elderly patients undergoing general anesthesia with endotracheal intubation for abdominal surgery ([OR 1.952, 95% confidence interval 1.604 to 2.279, p=0.006]). RDW at admission was statistically positively correlated with inflammatory factors, including procalcitonin (p<0.001), C-reactive protein (p<0.001), and tumor necrosis factor-α (p<0.001), in elderly patients with postoperative pneumonia who underwent abdominal surgery. ConclusionRDW at admission had predictive value for pulmonary infection in elderly patients undergoing abdominal surgery under general anesthesia with endotracheal intubation.

Maxillary sinus volume and adenoid tissue size in children: computed tomographic evaluation

Abstract OBJECTIVES. Adenoid hypertrophy is related to obstructive sleep apnea syndrome (OSAS). In this study, we investigated the relationship between adenoid tissue size and maxillary sinus volumes by examining the paranasal sinus computed tomography (PNSCT) images. MATERIAL AND METHODS. PNSCT images of 41 children were included in this study. According to the adenoid/nasopharynx (A/NP) ratio, two groups were identified. Group 1 (n=19, 9 males and 10 females): A/NP≤0.50 and Group 2 (n=22, 16 males and 6 females): A/NP&gt;0.50. The following measurements were performed: adenoid width, NP width, A/NP ratio, air column, soft palate, maxillary sinus volume and mucosal thickening. RESULTS. Adenoid width of group 2 (16.11±2.26 mm) was higher than that of group 1 (10.97±2.26 mm). In group 2, with an A/NP ratio of 0.61±0.07, the air column value (6.30±2.27 mm) was lower than that of group 1 with an A/NP ratio of 0.40±0.07 (air column value: 10.06±3.78 mm). NP width, soft palate and maxillary sinus volumes were not different between groups 1 and 2. As the adenoid width increased, the A/NP ratio increased, and the air column decreased. CONCLUSION. The increase of the A/NP ratio was related to the decreased air column. In older children, air column and bilateral maxillary sinus volumes increased. In males, the adenoid width value was larger than that in females. There was no significant relationship between A/NP ratio and maxillary sinus volume or NP width values. However, higher A/NP ratio values were related to lower air column measurements.

An optically thin view of the flaring chromosphere: non-thermal widths in a chromospheric condensation during an X-class solar flare

ABSTRACT The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release and transport processes. High-quality observations from the Interface Region Imaging Spectrograph (IRIS) spacecraft have transformed our view of the Sun’s atmospheric response to flares. Since most of the chromospheric lines observed by IRIS are optically thick, forward modelling is required to fully appreciate and extract the information they carry. Reproducing certain aspects of the Mg ii lines remain frustratingly out of reach in state-of-the-art flare models, which are unable to satisfactorily reproduce the very broad-line profiles. A commonly proposed resolution to this is to assert that very large values of ‘microturbulence’ is present. We assess the validity of that approach by analysing optically thin lines in the flare chromosphere from the X-class flare SOL2014-10-25T17:08:00, using the derived value of non-thermal width as a constraint to our numerical models. A non-thermal width of the order 10 km s−1 was found within the short-lived red wing components of three spectral lines, with relatively narrow stationary components. Simulations of this flare were produced, and in the post-processing spectral synthesis we include within the downflows a microturbulence of 10 km s−1. While we can reproduce the O i 1355.598 Å line rather well, and we can capture the general shape and properties of the Mg ii line, the synthetic lines are still too narrow.

Optimal Exposure Parameters for Microsurgery of Embryo Zona Pellucida Using Femtosecond Laser Pulses

We applied femtosecond laser pulses for microsurgery of the zona pellucida (ZP) of mouse embryos in terms of assisted reproductive technologies. The embryos were subjected to a series of laser pulses (wavelength of 514 nm, pulse duration of 280 fs, repetition rate of 2.5 kHz). Optical microscopy was used to study the dependence of the ZP cut width on the pulse energy E and velocity v of the laser beam. It is shown that the same value of the cut width can be obtained for different combinations of these parameters. The boundaries of admissible values were found to be E = (19–52) nJ, v = (0.001–0.03) mm/s; recommendations on their proper choice are given. An analytical expression of the cut width of the ZP for a given combination of laser-pulse energy, beam velocity, and pulse repetition rate is proposed. This simple and easy-to-use equation allows for quick prediction of ZP cut width in embryo microsurgery procedures of laser-assisted hatching and embryo laser tagging using femtosecond laser pulses.

The thickness and width of the intrinsic region effected electrical properties of GaAs p-i-n photodiodes

The thickness of the p-i-n photodiode's p and n contacts, as well as the width of the semiconductor device, affect the conductivity performance of the diode. In this study, the impact of thickness and width variations of GaAs p-i-n photodiode devices on their performance was investigated using the COMSOL Multiphysics software, which enables simulations of multiple physical fields. The terminal current and field strength at various positions were calculated for different thickness and width values. The mechanisms behind the influence of thickness and width variations on the conductivity performance were explained, and a detailed description of the distribution of terminal current and electric field magnitude was provided. Based on experimental data, the optimal thickness and width for achieving peak conductivity performance of the diode under material-saving conditions were determined, providing theoretical guidance for the preparation of efficient and stable GaAs p-i-n photodiodes.

Analysis of Window Width Variations on MSCT Stonegraphy Anatomic Image Information at Sanjiwani Hospital of Gianyar Regency

Parameters in MSCT can affect image contrast and brightness are values of Window width and window level. window width will affect the contrast of the image. where the higher the value of window width used, the image contrast will decrease, where is the selection of the value of window width which can improve the quality of MSCT images and provide better diagnostic information. The purpose of this research is to determine the effect of window width variation on anatomy image information and determine the most optimal window width value MSCT Stonegraphy examination. This research is a quantitative with an experimental approach. The data obtained was then analyzed by kappa test to assess the reliability of the respondents, from the results of the respondents then the statistical test used was the Friedman test. Statistical test results p value &lt;0.05. This research has the effect of changing values window width. anatomical image information with value of window width 250 showed optimal results for assessing the urinary tract on Stonegraphy MSCT. In this study there is the effect of variation window width significant to the Stonegraphic MSCT anatomical image information.

Substrate DNA Promoting Binding of Mycobacterium tuberculosis MtrA by Facilitating Dimerization and Interpretation of Affinity by Minor Groove Width.

In order to deepen the understanding of the role and regulation mechanisms of prokaryotic global transcription regulators in complex processes, including virulence, the associations between the affinity and binding sequences of Mycobacterium tuberculosis MtrA have been explored extensively. Analysis of MtrA 294 diversified 26 bp binding sequences revealed that the sequence similarity of fragments was not simply associated with affinity. The unique variation patterns of GC content and periodical and sequential fluctuation of affinity contribution curves were observed along the sequence in this study. Furthermore, docking analysis demonstrated that the structure of the dimer MtrA-DNA (high affinity) was generally consistent with other OmpR family members, while Arg 219 and Gly 220 of the wing domain interacted with the minor groove. The results of the binding box replacement experiment proved that box 2 was essential for binding, which implied the differential roles of the two boxes in the binding process. Furthermore, the results of the substitution of the nucleotide at the 20th and/or 21st positions indicated that the affinity was negatively associated with the value of minor groove width precisely at the 21st position. The dimerization of the unphosphorylated MtrA facilitated by a low-affinity DNA fragment was observed for the first time. However, the proportion of the dimer was associated with the affinity of substrate DNA, which further suggested that the affinity was actually one characteristic of the stability of dimers. Based on the finding of 17 inter-molecule hydrogen bonds identified in the interface of the MtrA dimer, including 8 symmetric complementary ones in the conserved α4-β5-α5 face, we propose that hydrogen bonds should be considered just as important as salt bridges and the hydrophobic patch in the dimerization. Our comprehensive study on a large number of binding fragments with quantitative affinity values provided new insight into the molecular mechanism of dimerization, binding specificity and affinity determination of MtrA and clues for solving the puzzle of how global transcription factors regulate a large quantity of target genes.

Development of auxiliary early predicting model for human brucellosis using machine learning algorithm

Using machine learning algorithms to construct an early prediction model of brucellosis to improve the diagnosis efficiency of Brucellosis. This study was a case-control study. 2 381 brucellosis patients from Beijing Ditan Hospital affiliated to Capital Medical University were retrospectively collected as case group, and healthy people from Beijing Chaoyang Hospital affiliated to Capital Medical University were collected as control group from May 9, 2011 to November 29, 2021. The relevant clinical information and full blood count results of 13 257 data were collected and five algorithms of machine learning were used to construct an early predication model of brucellosis by using machine learning: random forest, Naive Bayes, decision tree, logistic regression and support vector machine;14 074 data (2 143 cases incase group and 11 931 cases in control group) were used to establish the early predication model of brucellosis, and 1 564 (238 cases in case group and 1 326 cases in control group) data were used to test the predication efficiency of the brucellosis model. The results showed that the support vector machine algorithm has the best predication performance by comparing the five machine learning models. The area under receiver curve (AUC) of receiver operating characteristic (ROC) was 0.991, and the accuracy, precision, specificity and Recall were 95.6%, 95.5%, 95.4% and 95.9%, respectively. Based on the SHAP plot, platelet distribution width (PDW) and basophil relative value (BASO%) results were low, and men with high coefficient of variation (R-CV), erythrocyte hemoglobin concentration (MCHC), and platelet volume (MPV) were predicted to be at high risk of brucellosis. Platelet distribution width (PDW) contributed the most to the prediction model, followed by red blood cell distribution width coefficient of variation (R-CV). In conclusion, the establishment of a high-precision early predication method of brucellosis based on machine learning may be of great significance for the early detection and treatment of brucellosis patients.

Red cell distribution width as a prognostic marker for complications of community-acquired pneumonia in children: a comparison with Proadrenomedullin and Copeptin

BackgroundCommunity-acquired pneumonia (CAP) is the most common leading cause of morbidity and mortality in children; so, early identification of patients with CAP, who are at risk of complications or high mortality, is very critical to identify patients who need early admission to the intensive care unit.Purpose of the studyTo explore the prognostic value of Red Cell Distribution Width (RDW), Proadrenomedullin and Copeptin in the prediction of complicated CAP in children.Methods99 children were enrolled in the study, which was done at the Pediatric Department of Minia University Hospital. Measurement of serum Proadrenomedullin, Copeptin, and RDW was done to all participating children in the first 24 h of admission. Assessment of the severity of CAP was done using the Pediatric Respiratory Severity Score (PRESS).ResultsThe values of RDW, Proadrenomedullin, and Copeptin were significantly higher in the complicated CAP group than in the uncomplicated one (P value < 0.01). There were significant positive correlations between RDW and Proadrenomedullin with PRESS (r 0.56 for both). For the prediction of complications, RDW at cutoff point > 17.4, has 77.7% of sensitivity and 98.6% of specificity, followed by Pro ADM at cutoff point > 5.1 nmol/L, of 74% of sensitivity and 90.2% of specificity. For the prediction of mortality, RDW at cutoff point > 17.4 has 81.25% of sensitivity and 89.16% of specificity.ConclusionThe RDW is a reliable predictor of poor outcomes in pediatric CAP.

Calculated Stark widths of the triply charged argon ion Ar iv

ABSTRACT In this work we studied the Stark widths of Ar iv ion which are important for modelling atmosphere of some particular stars. Using semiclassical perturbation and modified semi-empirical approach, we present in this work Stark widths of triply ionized argon Ar iv spectral lines which will be implemented in the STARK-B data base. Energy levels and oscillator strengths needed as input for Stark width calculations were obtained from the atomic structure data base TOPbase. If we need to interpolate these Stark widths at different temperatures for the studied transitions of Ar iv, we use a simple and accurate fitting formula based on a least-squares method. The calculated values were compared to the existing experimental and calculated Stark width values.

Dietary citric acid improves phosphorus and calcium availability and intestinal morphology of Nile tilapia Oreochromis niloticus

Citric acid is an organic acid, which has been used as a feed additive because it has a reasonable cost, pleasant taste, and fast assimilation, showing positive effects on the growth and health of some livestock and aquatic species. This study aimed to evaluate the effects of increased levels of citric acid (0, 10, 20, 30, and 40 g/kg) in an isonitrogenous (280.00 g/kg of digestible protein) and isoenergetic diet (12.98 MJ/kg of digestible energy) on growth performance, body composition, apparent digestibility of nutrients and minerals, hematology, pH in stomach and intestine, and intestinal histomorphometry of Nile tilapia juveniles. Fish (n = 200, initial average weight of 14.59 ± 0.81 g) were randomly distributed in 25 experimental tanks (five replicates per treatment) and fed experimental diets over a 40-day period. Increasing levels of citric acid supplementation resulted in a decrease in the pH of the experimental diets (P = 0.021). However, no significant differences in pH levels were observed in the stomach and intestine among the treatments (P > 0.05). Citric acid supplementation did not significantly (P > 0.05) affect the growth performance variables, body composition, or the apparent digestibility coefficients (ADC) of dry matter, crude protein, gross energy, ether extract, and ash of the diets. Fish fed diets with 10 and 30 g/kg citric acid exhibited higher values for total leukocytes (P = 0.043) and total plasma protein (P = 0.019) compared to the control group. Diets supplemented with 20 g/kg citric acid showed a higher ADC value for phosphorus (P = 0.027) and calcium (P = 0.032) compared to the control. Additionally, fish fed with diets containing 20 g/kg citric acid demonstrated higher values for villus height (P = 0.002) and width (P = 0.048), crypt depth (P = 0.035), and villus: crypt ratio (P = 0.014) compared to the control group. In conclusion, the supplementation of 20 g/kg citric acid improved the availability of phosphorus and calcium and positively influenced the intestinal morphology of Nile tilapia juveniles.

Predictive value of red blood cell distribution width and platelet-to-lymphocyte ratio for acute kidney injury in critically ill patients.

The purpose of this study was to explore the value of red blood cell distribution width (RDW) and platelet-to-lymphocyte ratio (PLR) in predicting the occurrence of acute kidney injury (AKI) in critically ill patients. Among 1,500 adult patients in the intensive care unit (ICU) between January 2016 and December 2019, we examined the associations of baseline RDW and PLR with the risk of AKI development using logistical analysis. In addition, we explored the value of RDW and PLR in predicting in-hospital mortality. Overall, 615 (41%) patients were diagnosed with AKI. We divided the groups into two subgroups each; the high-RDW (≥14.045%) group had a high risk of developing AKI (OR=5.189, 95% CI: 4.088-6.588), and the high-PLR (≥172.067) group had a risk of developing AKI too (OR=9.11, 95% CI: 7.09-11.71). The areas under the receiver operating characteristic curves (AUCs) for the prediction of AKI incidence based on RDW and PLR were 0.780 (95% CI: 0.755-0.804) and 0.728 (95% CI: 0.702-0.754) (all p < 0.001), with cut-off values of 14.045 and 172.067, respectively. Moreover, a higher RDW was associated with a higher rate of hospital mortality (OR: 2.907, 2.190-3.858), and the risk of in-hospital mortality related to PLR was 1.534 (95% CI: 1.179-1.995). A higher RDW was related to a higher risk of AKI occurrence and in-hospital mortality in the ICU.

Z-GAL: A NOEMA spectroscopic redshift survey of brightHerschelgalaxies

Using the IRAM NOrthern Extended Millimetre Array (NOEMA), we conducted a Large Programme (z-GAL) to measure redshifts for 126 bright galaxies detected in theHerschelAstrophysical Large Area Survey (H-ATLAS), the HerMES Large Mode Survey (HeLMS), and theHerschelStripe 82 (HerS) Survey. We report reliable spectroscopic redshifts for a total of 124 of theHerschel-selected galaxies. The redshifts are estimated from scans of the 3 and 2-mm bands (and, for one source, the 1-mm band), covering up to 31 GHz in each band, and are based on the detection of at least two emission lines. Together with the Pilot Programme, where 11 sources had their spectroscopic redshifts measured, our survey has derived precise redshifts for 135 brightHerschel-selected galaxies, making it the largest sample of high-zgalaxies with robust redshifts to date. Most emission lines detected are from12CO (mainly fromJ = 2–1 to 5–4), with some sources seen in [CI] and H2O emission lines. The spectroscopic redshifts are in the range 0.8 &lt; z &lt; 6.55 with a median value ofz = 2.56 ± 0.10, centred on the peak epoch of galaxy formation. The linewidths of the sources are large, with a mean value for the full width at half maximum ΔVof 590 ± 25 km s−1and with 35% of the sources having widths of 700 km s−1 &lt; ΔV &lt; 1800 km s−1. Most of the sources are unresolved or barely resolved on scales of ∼2 to 3″ (or linear sizes of ∼15 − 25 kpc, unlensed). Some fields reveal double or multiple sources in line emission and the underlying dust continuum and, in some cases, sources at different redshifts. Taking these sources into account, there are, in total, 165 individual sources with robust spectroscopic redshifts, including lensed galaxies, binary systems, and over-densities. This paper presents an overview of thez-GAL survey and provides the observed properties of the emission lines, the derived spectroscopic redshifts, and a catalogue of the entire sample. The catalogue includes, for each source, the combined continuum and emission lines’ maps together with the spectra for each of the detected emission lines. The data presented here will serve as a foundation for the otherz-GAL papers in this series reporting on the dust emission, the molecular and atomic gas properties, and a detailed analysis of the nature of the sources. Comparisons are made with other spectroscopic surveys of high-zgalaxies and future prospects, including dedicated follow-up observations based on these redshift measurements, are outlined.

Adaptability of thermo-viscous versus sonicfill-activated bulk fill composite resin restorations

Purpose To in vitro evaluate the marginal and internal adaptation of Thermo-Viscous versus SonicFill Bulk Fill composite in Class I cavities. Materials and methods Twenty non-carious human maxillary premolar teeth were selected. Class I cavities were prepared with dimensions of 4 mm mesio-distal, 2.5 mm bucco-lingual width and 2 mm depth. Specimens were randomly divided into two equal groups I and II. Cavities were restored with VisCalor and SonicFill Bulk Fill, respectively. Materials were applied using the recommended adhesive and special dispenser. Specimens were then subjected to 500 thermal cycles, labelled and the restoration margins were inspected under stereomicroscope at X70 to detect and measure the marginal gap width. Specimen were then sectioned buccolingually using a microtome to detect and measure the internal gap width. Results Lower mean values of marginal gap width were recorded in VisCalor group compared to SonicFill group, however there was no statistically significant difference (P = 0.187) between both groups. While a significant difference (P = 0.002) was found regarding internal mean gap width values recorded in VisCalor group compared to SonicFill group. Conclusion Both tested materials/techniques used to reduce the viscosity of the bulk fill composites presented nearly comparable marginal integrity results, while VisCalor application technique enhanced the internal adaptation compared to SonicFill method.

The Friction Performance Analysis of Textured Gear under Starved MHD Lubrication

In this paper, the lubrication model of involute spur gear lubricated by MHD is established by considering different oil supply conditions and adding non Newtonian, thermal and surface texture. Using the multigrid method, the elastohydrodynamic numerical solutions of the meshing points, nodes, and exit points under different operating conditions during the meshing process are obtained. The results show that when the gear runs out of oil, using magnetic fluid lubrication can improve the lubrication condition. Compared to non textured gear meshing, the oil film thickness of textured gears participating in meshing is larger, which is beneficial for lubrication. The texture has the greatest impact on the node. By analyzing the influence of texture parameters at nodes, it can be seen that there is an optimal value for texture width, while a smaller depth is advantageous. It can be seen that the gear texture improves the pressure and film thickness distribution in the meshing area, which is beneficial for lubrication conditions and provides a reference for optimizing the tribological design of gears.

Transformer fault diagnosis based on Chaotic Particle Swarm Optimization RBF Neural Network

This article uses logistic chaotic mapping to improve the particle swarm algorithm parameters and construct the chaotic particle swarm optimization (CPSO) algorithm. Then, the CPSO algorithm is used to optimize the width, weight, and center values of the Radial Basis Function Neural Networks (RBFNN) to improve the RBFNN model used to diagnose transformer fault types. Results show that the CPSO-RBFNN model has a small mean square error and high accuracy in diagnosing transformer faults.