Analysis Program Research Articles

Evaluation of EnMAP hyperspectral satellite data for epithermal alteration mapping at Cuprite-Goldfield, southwestern Nevada, USA

The Environmental Mapping and Analysis Program (EnMAP) is a German hyperspectral satellite mission launched into orbit on April 1, 2022. The EnMAP records 246 hyperspectral channels in the 0.42-2.45 μm wavelength range, with a spatial resolution of 30 m. This wavelength range is useful for environmental and geological mapping. This study evaluates the application of the EnMAP data to the mapping of epithermal alteration systems at Cuprite and Goldfield in southwestern Nevada, USA. The Cuprite has served since 1980s as a test site of the U.S. National Aeronautics and Space Administration (NASA) for the evaluation of airborne and satellite remote sensing sensors. The surface reflectance Cuprite-Goldfield EnMAP scene analyzed in this study was recorded on April 9, 2023. The EnMAP data were analyzed using the spectral mixture analysis technique. The results obtained from the EnMAP moderate spatial resolution satellite hyperspectral data show accurate detection of the alteration zones in the Cuprite-Goldfield study area. The study indicates the potential of the EnMAP data for various geological and environmental applications.

The Formation and Development of Transactional Analysis in Russia in the 1990s and 2000s

This article describes the development of Transactional Analysis in Russia in the 1990s, when Tom Frazier brought the book “Transactional Analysis Today” by Ian Stewart and Vann Joins and asked Dmitry Kasyanov to translate it into Russian. The authors of the article talk about the first trainers and the first educational events on Transactional Analysis in Russia, in which many world-famous transactional analysts took part: in the 1990s, Claude Steiner, Stephen Karpman, Marilyn Zalcman, Petrushka Clarkson, John Clark, John Parr and others came to Russia. The article also talks about the first international educational programs of Transactional Analysis in Russia (“Transactional Analysis in the Clinical Field” and “Transactional Analysis in Education”), about the creation of national associations of Transactional Analysis — Saint-Petersburg Association of TA (SOTA) and Ryazan Association of TA (RATA). The authors describe the history of TA in Russia until 2015, when, with the support of EATA, for the first time in Russia and in Eastern Europe, the first International exam for obtaining the CTA status was held on the initiative of Elena Soboleva, the delegate from Russia to the EATA Council.

Behavior of Mortality from Cardiovascular Diseases in Colombia and Risaralda for 17 years. Analysis and Recommendations

BACKGROUND: Primary health care is in charge of identifying and managing risks. This identification is made through consultation with the application of screening in order to provide education, risk monitoring and make effective interventions in consultation. The objective was to identify the behavior of mortality from cardiovascular diseases in Colombia and Risaralda, from 1998 to 2015. METHODS: National Administrative Department of Statistics (DANE) death certificates were used from 1998 to 2015, with this a database was created and a data analysis program was carried out in time when they do not follow a time series. The most adjusted model was the LOESS regression or close regression model that was run in R. RESULTS: Mortality from hypertension, acute myocardial infarction and stroke has increased in recent years in Colombia and Risaralda, while mortality from heart failure has decreased. Regarding diabetes mellitus, it increased in Colombia, but decreased in Risaralda. CONCLUSION: Mortality due to cardiovascular diseases is for the same causes, therefore, greater emphasis should be placed on their prevention and screening. Clinical practice guidelines should be extended beyond the goals and focus more on these preventive strategies.

Development and Validation of an Artificial Intelligence-Based Motion Analysis System for Upper Extremity Rehabilitation Exercises in Patients with Spinal Cord Injury: A Randomized Controlled Trial.

In this study, we developed an AI-based real-time motion feedback system for patients with spinal cord injury (SCI) during rehabilitation, aiming to enhance their interest and motivation. The effectiveness of the system in improving upper-limb muscle strength during the Thera band exercises was evaluated. The motion analysis program, including exercise repetition counts and calorie consumption, was developed using MediaPipe, focusing on three key motions (chest press, shoulder press, and arm curl) for upper extremity exercises. The participants with SCI were randomly assigned to the experimental group (EG = 4) or control group (CG = 5), engaging in 1 h sessions three times a week for 8 weeks. Muscle strength tests (chest press, shoulder press, lat pull-down, and arm curl) were performed before and after exercises. Although both groups did not show significant differences, the EG group exhibited increased strength in all measured variables, whereas the CG group showed constant or reduced results. Consequently, the computer program-based system developed in this study could be effective in muscle strengthening. Furthermore, these findings may serve as a valuable foundation for future AI-driven rehabilitation exercise systems.

Professional and amateur: two vocal interpretations of the same poem.

This article concerns two vocal interpretations of the poem Dwa wiatry (Two Winds) by Julian Tuwim: one comes from an actor, the other from an amateur publishing educational materials on the Internet. The aim is to explain why the actor’s interpretation seems more suggestive than the amateur one. The subject of the study is the prosodic features of both performances of the poem (tempo, sound intensity, and tone changes), treated as an iconic indicator of its cognitive and emotional content. This article is a continuation of an earlier publication in which Tuwim’s Lokomotywa (Locomotive) was examined in a similar way. In both studies, the Praat programme for acoustic analysis of sound was used for research.

Sentiment analysis of financial Twitter posts on Twitter with the machine learning classifiers

This paper presents a sentiment analysis combining the lexicon-based and machine learning (ML)-based approaches in Turkish to investigate the public mood for the prediction of stock market behavior in BIST30, Borsa Istanbul. Our main motivation behind this study is to apply sentiment analysis to financial-related tweets in Turkish. We import 17189 tweets posted as "#Borsaistanbul, #Bist, #Bist30, #Bist100″ on Twitter between November 7, 2022, and November 15, 2022, via a MAXQDA 2020, a qualitative data analysis program. For the lexicon-based side, we use a multilingual sentiment offered by the Orange program to label the polarities of the 17189 samples as positive, negative, and neutral labels. Neutral labels are discarded for the machine learning experiments. For the machine learning side, we select 9076 data as positive and negative to implement the classification problem with six different supervised machine learning classifiers conducted in Python 3.6 with the sklearn library. In experiments, 80 % of the selected data is used for the training phase and the rest is used for the testing and validation phase. Results of the experiments show that the Support Vector Machine and Multilayer Perceptron classifier perform better than other classifiers with 0.89 and 0.88 accuracy and AUC values of 0.8729 and 0.8647 respectively. Other classifiers obtain approximately a 78,5 % accuracy rate. It is possible to increase sentiment analysis accuracy with parameter optimization on a larger, cleaner, and more balanced dataset by changing the pre-processing steps. This work can be expanded in the future to develop better sentiment analysis using deep learning approaches.

Association of TAS2R16 gene (rs860170, rs978739, rs1357949) polymorphisms and TAS2R16 serum levels in patients with age-related macular degeneration

ABSTRACT Background The aim of this study is to determine the association of TAS2R16 (rs860170, rs978739, rs1357949) gene polymorphisms and TAS2R16 serum levels in patients with the occurrence of age-related macular degeneration (AMD). Methods Subjects with early AMD, subjects with exudative AMD, and healthy controls participated in the study. DNA was isolated by salting out leukocytes from peripheral venous blood. Single nucleotide polymorphisms (SNPs) were analysed by RT-PCR. TAS2R16 levels were determined by enzyme-linked immunosorbent assay (ELISA) using the Abbexa Human Taste Receptor Type 2 Member 16 (TAS2R16) ELISA kit. Statistical data analysis was performed using “IBM SPSS Statistics 27.0” and SNPstats statistical data analysis programmes. Results The TAS2R16 rs860170 TT genotype is statistically significantly less frequent in the exudative AMD group than in the control group, whereas the TAS2R16 rs860170 C allele gene is statistically significantly more frequent in the exudative AMD group. Each C allele of TAS2R16 rs860170 is associated with a 2.8-fold increased probability of occurrence of exudative AMD. The C allele of TAS2R16 rs860170 is statistically significantly more frequent in men and women with exudative AMD than in the control group. The C allele of TAS2R16 rs860170 is associated with a 2.8-fold increased odds of occurrence of exudative AMD in women and a 2.9-fold increased odds of occurrence of exudative AMD in men. In TAS2R16 (rs860170, rs978739, and rs1357949), the T-T-A haplotype is associated with a 2.6-fold decreased likelihood of developing early AMD and the T-T-A haplotype is associated with a 3.2-fold decreased likelihood of developing early AMD in women. For TAS2R16 (rs860170, rs978739, and rs1357949), carriers of the T-T-G and T-T-A haplotypes are associated with a 2.2- and 3.2-fold decreased probability of exudative AMD, respectively. Individuals with the C-C-A haplotype are 9.2-fold more likely to develop exudative AMD. Specifically, the C-C-A haplotype is associated with a 9.3-fold increased likelihood of exudative AMD in men. In contrast, women with the T-T-A haplotype are 5.6-fold less likely to develop exudative AMD. Conclusion TAS2R16 plays an important role in the development of AMD.

Financial knowledge, financial attitude, and personality as antecedent of financial management behavior

Purpose: This study looks into the relationship between financial management behavior and financial knowledge, attitude, and personality. Design/Methodology/Approach- The study population included Yogyakarta's Micro, Small, and Medium-Sized Ceramic Crafts Enterprises. Data for this study was collected through purposeful sampling, with 45 respondents forming up the study sample. Analysis processes were performed on this research data using an analysis program called SPSS. Findings-The findings show that personality, financial attitude, and financial knowledge positively influence the financial management behavior of Yogyakarta's Micro, Small, and Medium-Sized Ceramic Crafts Enterprises. Research limitations/implications- To promote the growth of financial management behavior, the ceramic craft industry must maximize its financial knowledge, attitude, and personality. Originality/value-The study of financial management behavior in Micro, Small, and Medium Enterprises, especially ceramic crafts, is still quite limited. In addition, no previous research has discussed financial management behavior by adding personality variables as one of the influencing factors.

THE INFLUENCE OF SELF AWARENESS ON MATHEMATICS LEARNING OUTCOMES OF CLASS VII STUDENTS OF SMP NEGERI 1 BUNTAO'

One thing that influences learning outcomes is self-awareness. Self-Awareness (is an ability that allows students to adapt self with person other with increase control himself, can understand other people, and can learn to achieve a goal. The aim of this study to determine whether there is an influence of self-awareness on learning outcomes mathematics class VII students of SMP Negeri 1 Buntao'. The population of this study were students Class VII of SMP Negeri 1 Buntao'. Sampling used cluster techniques random sampling so class VII B was selected as a research sample. (1) Method collection data use questionnaire Which use scale Likert and documentation in the form of final semester exam scores. The analysis technique used is Analysis Statistics descriptive, analysis statistics inferential. (2) Test precondition analysis form test normality, test linearity and test hypothesis. Technique analysis and test precondition use program SPSS 21. (3) Results study show that there is Self-Awareness in learning mathematics with mathematics learning outcomes student class VII JUNIOR HIGH SCHOOL Country 1 Buntao'. Matter This proven with mark t count > t table (4,193 >2,056).

AMMONIUM-SALT METHODS ARE THE BASIS FOR BUILDING EFFECTIVE NEW TECHNOLOGIES IN CHEMICAL AND METALLURGY INDUSTRIES

The article contains new data, which is a continuation of the research for the development of scientific theoretical applied directions, which appeared in previous publications related to the field of chemical technologies and metallurgy. Previous studies have used ammonium salts as reagents for the production of synthetic sodium carbonate and fluorides, but this publication shows the possibilities of using them for the development of non-ferrous metallurgy. The purpose of the work is to show the importance of the anionic hydrogen atom contained in ammonium bisulfate (ABS) in entering the compound. Thermodynamic, thermal, renggenphase analysis and mathematical programs were used in the research methods. Physical and chemical changes in reaction mixtures, some synthesized salts when heated using the system derrivatograph Q-1000/D of the company" mom " F.Paylik, J. Paylik, L. Erdey and LabSys Evo were studied using special standardized factory structures such as TG-DTA/DSC (Setaram, France). The probability of some reactions occurring or not occurring was thermodynamically evaluated using the HCs-5.1 Chemistry (Outokumpu) "Astra-4" software package (complex). In the results of the study, the method of processing raw materials of non-ferrousmetals is presented in the form of a basic technological scheme.The possibility of formation of intermediate complex Tutton salts during production of the final product and reactions leading to their decomposition has been shown by thermodynamic studies. It is shown that the decomposition of such ammonium nickel sulfate salt releases ammonia into the melt of crystalline metal sulfate and ammonium bisulfate at about 235-260°С, where the pyrolysis of ammonium sulfate begins. It was observed that the by-products of (NH4)2Ni(SO4)2nickel ammonium Tutton's salt heated in the ABS melt up to 300-350°C are nickel sulfate and ABS melt, and ammonia also reacts upon re-cooling. It was experimentally determined that this "heating-cooling" process changes the color of ABS melt from lemon yellow to white. During the repetition of the process, it was found that this phenomenon is repeated until the excess melt is exhausted. This phenomenon is explained by the formation of nickel acid salt between nickel sulfate and ABS melt, which no one has studied before. It was concluded that this phenomenon should be common to ABS melt with sulfate of other metals.

Optimizing Technical Losses of the PLN Distribution Network with Changes in Operational Patterns in 2023 at PLN ULP Lhokseumawe

Technical shrinkage is shrinkage caused by impedance in generation equipment or transmission equipment to the distribution network so that there is energy loss. There are several technical shrinkage problems at PT. Perusahaan Listrik Negara (PLN) especially in Customer Service Unit (ULP) Lhokseumawe City and for now the cause is still unsolved, because this technical shrinkage problem will harm and have an impact on consumers and PLN itself. The purpose of the study was to optimize technical shrinkage in the distribution network to reduce energy losses that occurred during the electrical power distribution process in the distribution network of PT. PLN (Persero) ULP Lhokseumawe City. This study uses the help of Electrical Transient Analyzer Program (ETAP) software to simulate the power flow so that the depreciation value that occurs is obtained, then re-load adjustment is carried out to simulate again to determine the change in the depreciation value obtained after load adjustment. The results of the ETAP simulation show the depreciation value that occurred before the load adjustment was made by 76.7 kW after the depreciation load adjustment was adjusted to 59.6 kW. This means that this technical shrinkage can be suppressed by changing the feeder operation pattern and voltage drop value in accordance with the limitation provisions set in SPLN 72:1987.

Thermal-hydraulic and load following performance analysis of a heat pipe cooled reactor

Heat pipe cooled reactors have gained attention as a potential solution for nuclear power generation in space and deep sea applications because of their simple design, scalability, safety and reliability. However, under complex operating conditions, a control strategy for variable load operation is necessary. This paper presents a two-dimensional transient characteristics analysis program for a heat pipe cooled reactor and proposes a variable load control strategy using the recuperator bypass (CSURB). The program was verified against previous studies, and steady-state and step-load operating conditions were calculated. For normal operating condition, the predicted temperature distribution with constant heat pipe temperature boundary conditions agrees well with the literature, with a maximum temperature difference of 0.4 K. With the implementation of the control strategy using the recuperator bypass (CSURB) proposed in this paper, it becomes feasible to achieve variable load operation and return the system to a steady state solely through the self-regulation of the reactor, without the need to operate the control drum. The average temperature difference of the fuel does not exceed 1 % at the four power levels of 70 %,80 %, 90 % and 100 % Full power. The output power of the turbine can match the load change process, and the temperature difference between the inlet and outlet of the turbine increases as the power decreases.

Quality in special education from teacher perspectives

ABSTRACT In this study, we aimed to determine the quality indicators in separate special education schools that only educate individuals with special needs from the perspectives of teachers. We collected data from 82 special education teachers included by maximum diversity sampling using a semi-structured interview form. We conducted a content analysis using the MAXQDA qualitative data analysis program. As a result of the study, we identified six main themes as quality indicators in separate special education schools. These were teacher and administrator qualifications, school environment (social and physical), curriculum and educational process, family interest and attitude, policies and practices, and child-related factors. Moreover, several factors such as teachers with degrees in special education, materials, social perspective, evidence-based practices, family support, and individualised education programs were found to play an important role as quality indicators in separate special education schools. Improvements in quality indicators in separate special education schools can contribute to student outcomes.

A phenomenological study on women's disaster experience in Türkiye

The number and severity of disasters are rising globally, with negative effects on the physical, social, and economic spheres. According to research, men and women experience disasters differently around the world and have different coping mechanisms. With their backgrounds in disaster relief and high levels of cognitive awareness, women are recognized as strong actors. The issues that women in Turkey face during disasters must be identified in this context and proposals for effective solutions must be developed. Research is scarce, despite the literature's importance accorded to disaster and women's studies. To examine in depth the disaster experiences and lessons learned of women who faced various types of disasters (earthquake, flood, landslide, fire, epidemic, drought, and terrorist attack), nineteen women were interviewed in a virtual setting. A qualitative research method called phenomenological design was employed in the study. With the help of the MAXQDA 2020 qualitative analysis program, the research's data were analyzed. The analyses have shown that women are ill-prepared for disasters, consider disaster early warnings, have difficulty and security issues in accessing basic needs after disasters, have incorrect information about disasters and are willing to participate in disaster education, encounter social problems, and want to participate in decision-making mechanisms, and they acquire correct behavior skills after their first reflex behaviors. In order to ensure gender equality and address issues with integrated disaster management, the administration can follow the significant findings of the research. In study contributes to the field of disaster research by analyzing the experiences of women in disasters, particularly what makes them vulnerable to disasters, the impact of gender roles in disasters, their behaviors and experiences at the time of the disaster, and the actions taken to turn learned lessons into behavior.

Research on hydrogen risk prediction in probability safety analysis for severe accidents of nuclear power plants

The risk of hydrogen combustion after the Fukushima nuclear accident has always been a topic of concern for the nuclear power industry. In the hydrogen risk assessment of probability safety analysis (PSA) in nuclear power plants, the traditional methods by using lumped parameter program method is fast but may have large uncertainties, while the newly developed CFD analysis method is more accurate but has not yet been widely applied to the hydrogen risk analysis of PSA due to a variety of factors. The lumped parameter analysis program MAAP is used firstly to obtain the hydrogen parameters under the severe accident of small LOCA in this paper, based on China's third-generation large-scale pressurized water reactor (PWR) nuclear power plant HPR1000, and then the probability of deflagaration to detonation (DDT) for hydrogen risk is analyzed with uncertainty. Secondly, the CFD software GASFLOW program is used to analyze the same accident sequence to obtain more accurate hydrogen distribution and other parameters, and at the same time to obtain the DDT probability value of hydrogen risk. The hydrogen distribution obtained by CFD calculation can be used to guide the uncertainty value of the lumped parameter program to produce more accurate DDT value of hydrogen risk. The analysis results show that there is a certain uncertainty in hydrogen risk assessment when using lumped parameter program method, which can be corrected by combining the gas distribution analysis results given by CFD software, to obtain a more accurate and reliable probability value, so as to provide a more accurate reference for PSA analysis and to improve the overall safety of the nuclear power plant.

Preliminary analysis of startup transient for an ultra-small lithium-cooled space reactor power system

A multi-phases startup scheme based on the reactor startup first, followed by the closed Brayton cycle (CBC) machinery was proposed for the startup condition of an ultra-small lithium-cooled space reactor power system (ULCR) with a CBC conversion system concept scheme. The scheme minimizes the auxiliary motor power required for the turbomachinery startup. The overall startup process includes 7 phases. In the low-power operation phase, by controlling the turbomachinery shaft speed and helium-xenon (He–Xe) working fluid mass flow, the turbomachinery output power was balanced with the needed motor power. Therefore, the auxiliary equipment of the power conversion system was minimized. As the turbomachinery speed and He–Xe mass flow increased to the rated conditions, the core was in low temperature and low power steady-state operation, which was conducive to keep system in safety conditions for the automatic control system. With the reactivity insertion, the core temperature was finally increased to the rated operating condition, and the CBC conversion system's output power increased to the rated output power. The transient process of the designed startup scheme was calculated and analyzed by using the developed transient analysis program TACSNR. The results show that the change rate of the core average temperature at the rising phases was less than 1.1 K s−1. During the whole startup process, the parameters of the ULCR system are all in the safe range.

Relationship between maxillary sinus mucosal cyst and sinus ostium 2D area in three-dimensional volumetric paranasal CT ımages.

To investigate the relationship between the maxillary sinus ostium 2D area (SOA) and the development of mucosal cysts of the maxillary sinus (MMC). Thirty patients (≥ 18years) with unilateral MMC who underwent paranasal sinus CT (PNsCT) were included in this single-center retrospective study. Non-MMC sinus was used as the control group. Cyst and air volume of the maxillary sinuses, diameter, and 2-dimensional area of the ostium of the patients were calculated in the 3-dimensional volumetric analysis program. Both correlation and linear regression model analyses were performed for the relationship between MMC and SOA. Thirty patients were included (mean age of 42.30 ± 17.62years). A total of 15/30 (50%) were male. The mean SOA in patients with MMC (8.91 ± 1.10 mm2) was lower than in patients without MMC (12.94 ± 1.35 mm2), which was statistically significant (p < 0.001). The mean sinus ostium diameter in patients with MMC (2.12 ± 0.71mm) was higher than in patients without MMC (1.91 ± 0.82mm), which was statistically insignificant (p = 0.295). There was a statistically significant, good level of negative linear correlation between SOA and total cyst volume (TCV) [correlation coefficient (r) = -0.680, p < 0.001]). As a result, the regression model consisting of "Age, Sinus air volume, and TCV" variables is a good model and has statistically significant relations with SOA. In conclusion, small SOAs contribute to the development of MMC. There was a negative correlation between SOA and TCV. In addition, 2D area measurement may be a more accurate method instead of diameter measurement.

Pelaksanaan Quality Control Pesawat Sinar X di Pelayanan Radiodiagnostik

Background: Quality Control can be used as a monitoring of the reliability of X-Ray Unit during the validity period of the Conformity Test Certificate. During the use of X-ray Unit, there is the potential for damage to components during the validity period of the certificate of passing the Compliance Test. If the X-Ray Unit Reliability Test is only carried out during the Compliance Test, then if there is a decrease in the quality and safety of the X-ray Unit it cannot be immediately known. This has the potential to endanger patients, radiation workers and the public. In Banyumas Regency, there are 80 Radiation Source Utilization Permits spread across 34 radiodiagnostic installation. Preliminary studies show that not all radiodiagnostic installation carry out routine X-ray machine reliability tests according to the Keputusan Menteri Kesehatan Republik Indonesia Nomor 1250/Menkes/SK/XII/2009 Tentang Pedoman Kendali Mutu (Quality Control) Peralatan Radiodiagnostik.&#x0D; Method: This research type is qualitative with survey of 20 radiodiagnostic installation using a questionnaire instrument. Quality control conducted periodically includes kVp accuracy test, linearity and reproducibility mA, exposure time accuracy test, tube leak test, collimator beam suitability test, collimator shutter efficiency test, collimator light strength test, HVL measurement, implementation of reject analysis program and availability and qualifications of quality control officers and availability of quality control equipment. Then the data will be grouped based on research objectives and presented descriptively.&#x0D; Result: From the results of data collection, 1 hospital did not have a quality control officer and 4 hospitals had a quality control officer with an educational background of Diploma IV in Radiology Engineering without any Radiology Equipment Quality Control training. Meanwhile, 15 hospitals have quality control officers with an educational background in the Medical Physics Undergraduate Program and have attended training in Quality Control of Radiology Equipment. Of the 20 hospital radiology installations, there were 7 hospitals that did not carry out the Reject Analysis Program. This was done with the assumption that Digital Radiography had been used in both the CR and DR modalities. A number of 13 hospitals continued to carry out the Reject Analysis Program even though they had used Digital Radiography. Of the 20 hospital radiology installations, there are 6 hospitals that independently carry out X-ray unit testing within the framework of a quality control program. However, only 1 hospital conducts regular testing. Testing is also limited to the accuracy of the collimator field and the strong light of the collimator. Fourteen hospitals did not carry out a quality control program independently but only carried out an X-ray unit calibration test once a year which was carried out by BPFK and an X-ray unit distributor company.&#x0D; Conclusion: The implementation of quality control of x-ray machines on a regular basis has not been carried out by all radiodiagnostic services, even though they already have quality control officers. One of the reasons is the availability of quality control equipment needed for testing and supervision of radiodiagnostic service management. The role of management of radiodiagnostic services is needed to overcome these problems.&#x0D; &#x0D; Keyword : Quality Control Programe, Compliance Test, X-Ray Unit

Effects of the WEC shape on the performance of a novel hybrid WEC-FOWT system

A novel wind-wave energy hybrid concept is presented in this paper, consists of a floating semi-submersible wind turbine and multiple point absorption wave energy converters (WECs). Numerical simulations are conducted using the hydrodynamic analysis program AQWA, based on the three-dimensional (3D) potential theory. To ensure the reliability of the numerical model, the hydrodynamic responses of the semi-submersible platform and the WECs are validated using available experimental data. Finally, three WECs with different shapes are designed to investigate the shape on the performance of this hybrid system, including platform motion, mooring line tension and power captured by the WECs. The results demonstrate that the hybrid system with the circular truncated conical WECs has the best performance compared to the other two shaped WECs. In addition, the influence of the platform motion on the performance of the WEC array is negative. Overall, this study could provide some insights for the design of other wind-wave integrated systems.

First drug-checking study at an electronic festival and fentanyl detection in the central region of Mexico

BackgroundPerception of drug adulteration has increased in Mexico, but there is little research on adulterants and toxicity. The aim of this study was to identify drug composition in an electronic music outdoor festival nearby Mexico City.MethodsThe participants completed a questionnaire with demographic data, harm reduction strategies, drug-use patterns, history, and the drug they expected to find. We took a small sample of each substance and prepared it for drug checking. A two-section drug testing station was placed within the grounds of the festival. Interaction with participants occurred at the front part. Drug checking was conducted at the rear part. The service was free of charge, voluntary and confidential. Forty persons aged 22 to 48 years participated (mode = 28), of which 92.5% were male, most (82.5%) were single. Through the Substance Analysis Program of “ReverdeSer Collective,” we conducted the testing with the attendants that provided 51 drug samples, following ethical and biosafety protocols. We used colorimetry, Fourier Transform Infrared Spectroscopy, and fentanyl immunoassay strips for sample analysis.ResultsSubstances of choice among attendants were psychostimulants (MDMA and other amphetamine-like drugs) and hallucinogens. Most samples contained what the users expected plus adulterants. Main adulterants were methylene-dioxy-ethyl-amphetamine, methylene-dioxy-propyl-amphetamine, hydroxyamphetamine, and the selective serotonin reuptake inhibitor venlafaxine. Fentanyl was present in 2 out of 4 cocaine samples and in 14 of the 22 confirmed MDMA samples.ConclusionsSome of the adulterants found pose serious health risks, especially fentanyl, amphetamine-like substances, and venlafaxine. Therefore, it is urgent to monitor these adulterants at electronic music festivals and to implement prevention, treatment, and harm reduction public policies. Naloxone distribution and drug-assisted therapies should be part of government programs in Mexico.