bluuebunny/crossref_metadata_2025 huggingface dataset:
СARDIAC ARRHYTHMIAS ANALYSIS BASED ON THE PHASE PORTRAIT OF ECG SIGNAL
Authors: Shafag Samadova Shafag Samadova
Published: May 2023

The article illustrates the development of virtual system in LabVIEW software environment for processing and analysis of electrocardiographic signals. In the system, the issues of processing ECG signal with classical methods and in phase space have been considered, the comparison of these methods have been carried out, characteristic changes of the shapes of ECG phase portraits corresponding to the change of diagnostic signs haveb been analyzed, and additional diagnostic signs determined on the the base of phase portrait in order to increase the reliability of ECG diagnosis have been interpreted. As a result of the analysis of the sequence of RR intervals using the developed program, a histogram, a scatterogram, a fast Fourier transform, an autoregressive spectrum, a short-term Fourier transform and the corresponding informative parameters characterizing heart rate variability were obtained: the average length and standard deviation of RR intervals, the mean value and standard deviation heart rate, spectral parameters, etc. The results obtained during the processing and analysis of ECG files taken from the MIT BIH databases using the HRV analysis program and the determination of informative parameters implemented in the LabVIEW environment confirm the adequacy of the developed program.
Keywords: ECG signal, phase space, phase portrait, RR intervals, LabVIEW software, heart rate, QRS complexes.
DETECTİON OF HAND MOVEMENTS BY ANALYZING EEG SIGNALS USING CNN
Authors: Aynur Jabiyeva, Mardaxay Ravinov Aynur Jabiyeva, Mardaxay Ravinov
Published: May 2023

In this paper a method for detecting six specific hand movement events in a 32-component brain EEG signal by using an ensemble of convolutional neural networks (CN) as a multiclass classifier is considered. The paper proposes and empirically evaluates several options for the architecture of convolutional neural networks, as well as an ensemble that combines the proposed options for the architecture of convolutional neural networks, using a blending algorithm and a final classifier based on logistic regression. The advantages of the chosen classification method for the problem being solved are shown. The results obtained make it possible to say that the use of a classifier in the form of an ensemble of several models of convolutional neural networks allows one to effectively identify characteristic features in the initial EEG signals, and at the output of the classifier to obtain the probabilities that the input signal belongs to one of the given classes of hand movements. The use of the blending algorithm makes it possible to obtain optimal classification results by integrating the best estimates of several models, which individually on the entire test set may give a non-optimal result.
EXAMINATION OF THE CONTROL SYSTEM OF AN ARTIFICIAL EYE IMPLANT
Authors: Aynur Jabiyeva, Rashad Khalilov Aynur Jabiyeva, Rashad Khalilov
Published: May 2023

Due to various reasons, a person who is missing one eye may experience psychological as well as excruciating suffering. Enucleation and evisceration surgery are the most often used methods to remove a sick or injured eye. The patient is often fitted with a bespoke implant into the orbital tissues after the surgeon removes the eye. In order to keep the socket from looking hollow and depressed, this replaces volume. Once the socket has stabilized, a prosthetic shell—also known as an artificial eye, glass eye, or ocular prosthesis—is placed within. An ocular implant can mechanically replace the lost eye. There have been significant developments in this field. To replace the missing eye, an ocular prosthesis was developed. Physically, the prosthetic seems natural. The eye, however, is stationary or just slightly mobile. development of an independent ocular motor system is the objective of this study in order to give the artificial eye more realistic movement. The detection of natural eye movement is a crucial issue. This study includes an overview of eye movement detecting techniques. Then eye movement detection using the fusion approach is created. The first aspect that is recorded and stored is the eye movement. Then, during the experiment, the sensor array yields the eye movement signal, and the matching rule yields the eye position. The experimental system, fusion technology, and early findings are covered in the majority of this work.
Keywords: Sensor array, fusion, artificial eye, orbital implant, and ocular control.
SPARSE REPRESENTATION IN THE RECONSTRUCTION OF ULTRA-HIGH-RESOLUTION
PET IMAGES
Authors: Aynur Jabiyeva, Naggov Naggayev Aynur Jabiyeva, Naggov Naggayev
Published: May 2023

Reconstructed pictures in positron emission tomography (PET) research are frequently noisy and low quality. The low-count issue is the main source of these issues. Sparse prediction is more likely to be chosen as the solution as sparse technology is employed more frequently. I suggest a brand-new sparse prior technique in this research to process low quality PET reconstructed pictures. Two dictionaries (D1 for low-resolution PET images and D2 for high-resolution PET images) are trained from plenty of actual PET image patches in the proposed approach. The sparse representation for each patch of the input PET picture is then obtained using D1. Finally, D2 is used to create a high-resolution PET image from this sparse representation. The results of the studies show that the suggested strategy has superior effects that improve image resolution and detail recovery that are stable. In terms of root mean square error, this technique performs better quantitatively than older methods (RMSE). The suggested method offers a fresh and effective way to enhance the image quality of PET reconstructions. The back projection technique was created for magnetic resonance imaging (MRI) picture reconstruction of under sampled data and has been used to denoise dynamic PET images.
Keywords: PET imaging, data acquisition, artifacts, resolution, information technologies.
MODULATION FOR INFORMATION MEASUREMENT SYSTEM IN CONTEXT OF SOFTWARE DEVELOPMENT USING NODE-BASED GRAPHICAL EDITOR
Authors: Rahim Mammadzada, Kamala Alieva Rahim Mammadzada, Kamala Alieva
Published: May 2023

In this paper information measurement system (IMS) modulation integrated with a graphical node editor (GNE) is carried out for engineering applications to build software capable of both editing and simulating different scenarios. A modulation characteristic measuring and classification system for classifying a discreet signal that includes a preprocessor, stage measuring system and modulation classifier. Preprocessor detects impulse begins and finishes, determines impulse time, and changes the discreet signal into digital signals. The stage measuring system determines short chip counts, long chip counts, stage jump magnitudes, number of stage states, and polynomial coefficients for stage modulation of the discreet signal. Modulation classifier identifies modulation type on base of measurements using both rules-based and similarity-based classification methods. The lack of educational-oriented software in the IMS field leads to a more challenging learning curve resulting in a drop in student motivation. Software integrated with GNE is purposed to minimize the overwhelming feeling in students in the IMS field by simultaneously providing understandable execution order for the machine. An application consisting of GNE with the addition of custom node architecture and their interaction logic is built to conduct laboratory work using this software. Executed laboratory work result shows that having GNE integrated into the software can significantly impact visual understanding, leading to higher motivation and interest in the subject in students.
Keywords: Node, Graphical Editor, GPIOS, Information measurement system.
QUALITY ASSURANCE DURING TRANSPORTATION IN RAILWAY VEHICLES
Authors: Jala Jafarova, Sabina Aliyeva Jala Jafarova, Sabina Aliyeva
Published: May 2023

Regional cooperation in rail transport can help participating countries diversify their trade patterns. Improved rail transport can also help attract foreign direct investment, increase participation in global production networks and the scale of related trade in manufactured goods, and diversify exports. Improved rail infrastructure will increase global competitiveness and spur economic development. In addition, improved rail infrastructure will help regional cooperation and integration through improved connectivity between people, goods and services. The operation is carried out by a railway company, providing transport between train stations or freight customer facilities. Power is provided by locomotives which either draw electric power from a railway electrification system or produce their own power, usually by diesel engines or, historically, steam engines. Most tracks are accompanied by a signalling system. Railways are a safe land transport system when compared to other forms of transport. Railway transport is capable of high levels of passenger and cargo utilisation and energy efficiency but is often less flexible and more capital-intensive than road transport, when lower traffic levels are considered. Railways are a climate-smart and efficient way to move people and freight.
Keywords: railway, transport, improvement, transportation, transit, passenger, development, delivery, traffic, technology, vehicles.
WAYS OF APPLYING THE QUALITY MANAGEMENT SYSTEM IN ENTERPRISES
Authors: Gunay Hasanova Nuriyya Ramaldanova Gunay Hasanova Nuriyya Ramaldanova
Published: May 2023

Achieving institutional quality is one of the main goals of today's enterprise. This requires the development of policies, regulations and practices that cover each institutional element with a single quality view, their translation into written documents, and the implementation of institutional assessments and audits in accordance with the written documents. The study aims to identify quality and quality management approaches, the development of the ISO 9001 Quality Management Standard and the necessary documentation and document management practices within this framework. Control and evaluation of the system is also carried out through documents, which are the source of corporate information. The results of our research are considered significant in terms of revealing the importance of document management practices in quality management models that are fundamental to modern enterprises. The ISO 9001 Standard is not difficult and contains general requirements. It can be applied in any sector, be it large or small scale. It represents a powerful management system when properly understood and properly applied. The ISO 9001 Standard is completely dedicated to organizations to establish a Quality Management System. What needs to be done is not to create a "standard" Quality Management System, but to create a Quality Management System that meets the requirements of the standard.
Keywords: ISO 9001:2000, quality management system, enterprise, international standards, quality, etc.
BIG DATA ANALYSIS IN REHABILITATION TREATMENT
Authors: Aynur Jabiyeva, Farid Nagdaliyev Aynur Jabiyeva, Farid Nagdaliyev
Published: May 2023

High productivity recent advances in technology of athletes complex of diseases more exactly achieve modeling for system of biology as a holistic science occur to come out reason has been Close will come personalized of medicine appear that it will come out predicts. Healthcare in their systems level personalized medicine Conducting Omics enterprises with regions is limited and personalized medicine high and down profitable countries between healthcare in their systems increasing the abyss expand can A series factors traditional from medicine personalized medicine transition slow: profitable high of productivity information creation; hybrid education and multidisciplinary teams; of information storage and processing; of information integration and interpretation ; individual and global economic relevance. This review personalized medicine global transition speed up for big of information analysis and forward strategies on important of developments update provided is doing.
Keywords: Big data, Omics, Personalized medicine, High-throughput technologies, Cloud computing, High -dimensionality
IMPROVEMENT OF THE METHODOLOGY FOR EVALUATING THE CARRIER FREQUENCY OF
THE SIGNAL DURING DATA TRANSMISSION IN TELECOMMUNICATION CONTROL AND DISTANCE LEARNING SYSTEMS
Authors: Nahlah M.A.M Najm Nahlah M.A.M Najm , Nada Adnan Taher Nada Adnan Taher , Oleksandr Valchenko, Oleksandr Turovsky Oleksandr Valchenko, Oleksandr Turovsky
Published: May 2023

Effectiveness of the application of telecommunications systems is directly influenced by the effectiveness of the functioning of each component and device of its design.
The article directly examines the issue of improving the carrier frequency estimation methodology for data transmission in telecommunication management and distance learning systems. The essence of the solution lies in proposals for improving the efficiency of frequency estimation at the input signal synchronization stage, which is presented on the example of a satellite telecommunication control system and distance learning. Namely, the analysis of modern satellite telecommunications systems was carried out and the features that affect the effectiveness of carrier frequency estimation and input signal synchronization were determined. The main inconsistencies are the low energy of the input signal receiving channel, significant signal frequency uncertainty, and the presence of "neighboring channels" receiving the input signal. It was determined that satellite communication systems during data transmission work in the mode with multi-station access in the variant of operation with frequency division of channels, which can receive data packets in the mode of multiple access or when providing a data reception channel on demand. At the same time, the operation of telecommunications systems can proceed both in continuous and in batch modes of receiving the input signal. It is considered that coherent processing of the input signal is carried out in demodulators of satellite telecommunications and interference-resistant coding is used.
To solve the task of estimating the carrier frequency of the input signal in coherent demodulators of modern satellite telecommunications, considering the above-defined inconsistencies and features, the article proposes a methodical approach. The essence of this approach is to determine the potential boundary of variances of the obtained estimates of the carrier frequency and to develop algorithms for estimating the carrier frequency of the input signal separately for continuous and batch modes of input data transmission based on the fast Fourier transform.
Keywords: Frequency, signal, uncertainty, carrier, estimation.
IMPACT OF THE TECHNICAL REQUIREMENTS OF THE AZS ISO/IEC 17025-2020 STANDARD
ON THE RESULTS OF MEASUREMENTS CARRIED OUT IN TESTING AND CALIBRATION LABORATORIES
Authors: Rashid Mammadov, Hikmet Askerov Rashid Mammadov, Hikmet Askerov
Published: May 2023

For the adequacy of calibration/testing laboratories general conditions are defined in the AZS ISO/IEC 17025-2020 [1] standard, and the Azerbaijan Accreditation Center accreditation by (AZAK) audits in accordance with the conditions specified in this standard being carried out. The conditions to be complied with in the AZS ISO/IEC 17025-2020 standard are specified in the sections under the headings of "Management Conditions" and "Technical Conditions". In accreditation audits, the quality management system of laboratories, “Management Conditions”; calibration/testing activities are evaluated according to the requirements specified under “Technical Conditions”. To be accredited for calibration/testing services a laboratory that wants to meet the conditions specified in the standard creates/maintains the quality management system (QMS) in line with in this context, it creates the quality management system documentation in which the QMS applications are defined. The laboratory's quality management system policies and quality policy The Quality Handbook, which contains the declaration, is the most important document of this documentation. During the accreditation process, these documents and those defined in these documents. The services/activities provided according to the practices are subject to audits. In this statement, by giving information about the technical conditions considered, mostly in the technical activities of laboratories an assessment of the observed nonconformities is done.
RESEARCH NEW GENERATION ULTRASOUND TECHNOLOGIES IN BLOOD FLOW
MONITORING
Authors: Laman Niftaliyeva Laman Niftaliyeva
Published: May 2023

Currently, ultrasound machines are widely used in hospitals for the first diagnosis of various pathologies. There is also an ultrasound Doppler method to determine and monitor blood flow. Through this method, it is possible to get information about the general condition of the veins and whether there are any problems during the examination of the veins in the clinic. But, it does not have the ability to continuously monitor the condition of the veins. Continuous monitoring of blood flow rate will facilitate the work of doctors during post-operative monitoring or diagnosis of the patient's condition. At the same time, traditional ultrasound transducers may not be comfortable for post-operative examinations. In this article, a number of difficulties encountered during examinations conducted using a conventional ultrasound machine were investigated. At the same time, as a solution to these difficulties, one of the newest technologies of the modern era, the new generation ultrasound machine “USM patch”, its main features and advantages were discussed. This device, based on the working principle of the Doppler effect, is suitable for continuous monitoring of the absolute speed of blood flow in the arteries of the deep layers. It is lightweight, small in size, and has the potential to increase the accuracy and quality of the examination.
Keywords: Blood Flow Sensor, movement of red blood cells, Doppler effect, ultrasound machine, Doppler ultrasound patch, biodegradable sensor, automatic
FMG-BASED INFORMATION MEASUREMENT SYSTEM FOR CONTROLLING A LOWER
LIMB PROSTHESIS
Authors: Nelli Yaremchuk, Timur Aliyev Nelli Yaremchuk, Timur Aliyev
Published: May 2023

Disability is one of the most pressing health and social problems worldwide. Despite significant medical advances, there are situations in which the only and most effective treatment is amputation. Most often people lose their legs as a result of accidents, wars and industrial injuries. A person's mobility is severely limited by the loss of a lower limb, which has a negative impact on both their physical and emotional health. It definitely reduces the quality of his life. In order for a person who has had an amputation to lead a full and active life in the future, it is necessary to have a well-designed prosthesis that can simulate the normal function of the lost limb as much as possible. There are different types of prostheses with different designs and functions, but the most advanced are those with built-in microprocessors. However, even these prostheses have problems integrating movement and adjusting their operation to the individual characteristics of the patient, which makes it necessary to create and improve modern prosthetic control systems. This research proposes the consideration of an information-measuring system based on the reading of muscle activity signals and their further analysis by means of Fourier transform. As a result, the prosthesis may be controlled more precisely and smoothly, normalizing the biomechanical aspects of human gait.
Keywords: Limb prosthesis, amputation, biomedical systems, force myography, signal processing, Fourier transform
Determination of Effect of a Lead Filter on the Average Energy of Photon Radiation of a Medical Linear Electron Accelerator
Authors: Zaharadniuk Aliaksei , Taraev Aleksandr , Lazarenko Sergey , Komar Damian
Published: May 2023

The article considers the change in the average energy of photon radiation with the upper limit of the spectrum of 6 MeV, generated by a medical linear electron accelerator (or LINAC for short), when radiation passes through a lead filter of various thicknesses. The calculation of the spectrum and average energy of photon radiation is carried out using Monte Carlo modelling. Additionally, the coefficients of attenuation of photon radiation by a lead filter are calculated. Particular attention is paid to the influence of the filter on the shape of the spectrum. The validation of the calculation is determined by comparing the model and experimentally obtained attenuation coefficients for kerma.
Gamma-Neutron Spectrometer-Dosimeter with Computational Determination of the Dose Rate from the Measured Spectra of Mixed Emission
Authors: Dreyzin Valeriy , Logvinov Dmitriy , Grimov Aleksandr , Kuz'menko Aleksandr
Published: May 2023

The article substantiates the expediency of creating a gamma-neutron spectrometerdosimeter with a computational determination of the dose rate for each component of mixed radiation, taking into account its complex dependence on the radiation energy of each type. A method is proposed for calculating the dose rate of each component of gamma-neutron radiation from their measured spectra.
Radiation Situation and Radiation Doses in the Russian Federation in 2021
Authors: Tsoviyanov Aleksandr , Kosterev Vladimir , Sivenkov Aleksandr , Zhuravleva Valentina
Published: May 2023

The article contains information about the radiation situation and radiation doses of the population, as well as occupational exposure in 2021 in the territories serviced by the FMBA of Russia. The distribution of the number of personnel working with sources of ionizing radiation or exposed to ionizing radiation by dose intervals for taking into account individual doses of radiation at facilities of different departmental affiliation, as well as the values of the collective dose are given. Information is provided on the structure, number of radiological procedures by types and groups of organs, collective and average radiation dose of patients received in 2021 in the territories serviced by the FMBA of Russia. There is a significant increase in the contribution of computed tomography to the collective dose compared to previous years.
Method for Measuring the Annual Average Equivalent Equilibrium Concentration of Thoron in Contemporary Residential Buildings
Authors: Izgagin Vyacheslav , Zhukovskiy Mihail , Onischenko Aleksandra
Published: May 2023

The article is devoted to a new method for determining the average annual value of the equivalent equilibrium concentration (EEC) of thoron in residential buildings. The developed method closes the issue of the lack of instrumental support in the Russian Federation for measuring the average annual and average seasonal value of the thoron EEC in residential premises and workplaces. Using this method, measurements were carried out and the average annual values of EEC for the city of Ekaterinburg were estimated.
An Equipment for Complex Determination of the Parameters of SNF Solutions
Authors: Belousov Maksim , Gorbunov Maksim , Dudin Sergey , Ignat'ev Oleg , Krymov Andrey , Kupchinskaya Evgeniya , Morozov Sergey , Kulishov Yuriy , Naumov Valeriy , Pulin Aleksey
Published: May 2023

The article describes an equipment for the complex determination of elements in the so-called «intermediate» solutions of spent nuclear fuel (SNF) WOKER. The equipment combines the functions of a densitometer, X-ray fluorescence analyzer and g-spectrometer, some of them can be performed in parallel. The problems of creating high-quality measuring channels of the WOKER and the results achieved are discussed. Particular attention is paid to the method of analysis implemented with the WOKER, which has been successfully used during several years in the radiochemical production of the «Mayak» Production Association.
Determination the Exposure Dose (an Example of Ionizing Radiation)
Authors: Fedorovich Gennadiy
Published: May 2023

Sanitary and hygienic assessments of working conditions according to the levels of harmful factors in the working environment require the determination of the exposure dose. As a rule, it is determined by indirect measurements - special calculation methods are needed based on the results of a series of successive measurements. The ability to apply regular, rigidly defined techniques is limited to permanent jobs with stably repetitive exposure. In general cases of nonpermanent workplaces with unstable exposure regimes, continuous measurements are required during the working day, which, as a rule, turns out to be unnecessarily difficult for practical reasons. The paper discusses a method for determining exposure doses for real conditions, when workers randomly move between different production sites, and sources of harmful factors turn on at random times and act with random intensity. It is proposed to consider the movements of workers as a sequence of Bernoulli tests with probabilistic exposure. It is found that the resulting probability distribution is given by the binomial law. In addition to average dose values, the probabilistic approach makes it possible to estimate measurement uncertainties of types A and B. The reliability of the results is checked by comparing the difference between the average value of the measurement results and the standard deviation. Measurement results can be trusted if the first is less than the second.
Dimensions and level of resilience in university students, during the COVID-19 pandemic
Authors: Cruz Covarrubias Lucila Patricia , Aguilar Pérez Pedro , Aguilar Cruz Pedro Daniel
Published: May 2023

The objective of the study was to assess the levels of resilience in university students. The design was quantitative, descriptive of an exploratory nature, based on the questionnaire of Resilience, Strength and Personal Security, the sample consisted of 469 students. The results show that a favorable percentage of students is highly resilient in the six factors studied. There are also some statistically significant differences in factors, according to sex. In conclusion, students with a high level of resilience have greater skills and resources to face adverse situations, such as the pandemic, both academically and personally.
Reflexões sobre o ser ator: vida e carreira de uma figura ímpar do teatro
Authors: Dos Santos Cunha Maria José
Published: May 2023

Este trabalho reflete sobre a arte de representar do ator e cria conexões com a carreira da atriz Eunice Muñoz, que teve um papel preponderante no desenvolvimento da cultura portuguesa e tem como objetivos ser um tributo à sua memória e dá-la a conhecer a quem não teve essa oportunidade. A investigação, recolha de bibliografia consentânea com a temática abordada e o desenvolvimento do trabalho possibilitaram concluir que a atriz é digna de ser recordada por todos os que com ela trabalharam, conviveram e cresceram na arte dos palcos e de funcionar como inspiração/aspiração para as gerações de atores vindouras.
Tejidos ignífugos y sistemas de protección "in situ" en la salvaguarda de bienes culturales ante emergencias
Authors: Sanz Domínguez Estrella , Hernández Azcutia Marta , Cárdenas Galeano Alejandro
Published: May 2023

EEn este artículo se expone el estudio realizado en el Museo del Prado para la selección de materiales y sistemas de protección in situ ante emergencias de sus colecciones. Se parte de la premisa de una opción factible de protección in situ de las obras que por su naturaleza material, formal, significación o uso dentro de la colección lo permitiera o se aconsejara priorizar frente a un traslado por circunstancias ordinarias o frente a una evacuación, en caso de circunstancias extraordinarias. Inicialmente se definen las necesidades de protección de los bienes culturales distinguiendo las opciones con las que contamos para combatir algunos riesgos concretos o la mayoría de los más comunes. En un análisis posterior se comparan cuatro materiales desarrollados en el mercado centrándonos en los denominados “tejidos ignífugos”, apuntando sus características y propiedades. A continuación, se hace una valoración de los aspectos a considerar cuando se usa como fundas en caso de emergencia sobre obras de arte sensibles a temperaturas altas, llamas, agua y depósitos de partículas.
Effect of strength training on knee proprioception in patients with knee osteoarthritis. A systematic review and meta-analysis protocol
Authors:   Universidad San Sebastián, Guede-Rojas Francisco , Benavides-Villanueva Alexis , Salgado-González Sergio , Mendoza Cristhian , Arias-Álvarez Gonzalo , Carvajal-Parodi Claudio
Published: May 2023

Review question / Objective: To analyze the effect of strength training (ST) on knee proprioception in patients with knee osteoarthritis (KOA). Condition being studied: KOA is a chronic and degenerative joint disease characterized by articular cartilage loss, marginal bone hypertrophy, and inflammatory involvement of periarticular tissue of the knee. Symptoms of KOA are pain, stiffness, reduced range of motion, and muscle weakness, although proprioception may also be affected, contributing to the associated functional limitation.
A new subspecies of Arctic Apollo − Parnassius arcticus (Eisner, 1968) (Lepidoptera, Papilionidae) from the Arga-Tas Range (North-Eastern Yakutia)
Authors: Yakovlev Roman V. , Bakhaev Yuri I.
Published: May 2023

Basing on the external morphological characters, an isolated population of the Arctic Apollo, Parnassius arcticus (Eisner, 1968) (Lepidoptera, Papilionidae), from the Arga-Tas Range mountains (North-Eastern Yakutia, Russia) is described here as a new subspecies, Parnassius arcticus shavlovi Yakovlev & Bakhaev, subsp. nov.
Термодинамика
Authors: Mesnyankin S. Yu.
Published: May 2023

Излагаются главные понятия и законы термодинамики в их современном понимании. Большое внимание уделено процессам с идеальными газами и реальными веществами, закономерностям преобразования теплоты в механическую работу в обратимых циклах газовых и паровых тепловых двигателей, а также в тепловых трансформаторах. Книга предназначена для студентов высших учебных заведений, обучающихся по направлению подготовки 24.03.00 «Авиационная и ракетно-космическая техника» и может быть полезна научно-техническим работникам, специализирующихся в области теплофизики и авиационно-космической техники.
Техногенная сейсмичность и ее воздействие на окружающую среду при добыче угля в Южной Якутии
Authors: Grib N. N. , Grib G. V. , Pazynych A. Yu.
Published: May 2023

Монография представляет собой обобщенный материал, полученный авторами при изучении сейсмики взрывов, наведенной сейсмичности, при производстве промышленных взрывов в Южно-Якутском угольном бассейне, и воздействия техногенной сейсмичности на окружающую среду. Приведена сейсмотектоническая характеристика Южной Якутии. Отмечено, что в связи с высокой природной сейсмичностью и близостью Южно-Якутского каменноугольного бассейна к зонам активных разломов, антропогенные воздействия могут в значительной степени влиять на уровень сейсмичности в регионе. Показано влияние техногенного воздействия на изменение локального сейсмического режима в Южной Якутии, приведены результаты геофизического мониторинга по изучению динамики напряженно-деформированного состояния геологической среды от воздействия промышленных взрывов. Оценено влияние сейсмического воздействия массовых взрывов на промышленную инфраструктуру, находящуюся в зоне влияния взрывных работ разреза «Нерюнгринский». Монография рассчитана на специалистов сейсмологов, геофизиков, геологов, аспирантов и студентов горно-геологического направления. Будет полезна специалистам горных предприятий, ведущих разработку полезных ископаемых с применением взрывных технологий. Монография содержит 25 таблиц, 98 рисунков.
Prognostic factors for overall survival in stage IV gastric cancer
Authors: Nguyen Chuyen
Published: May 2023

ABSTRACT Aims: To Determine Prognostic factors for overall survival in patients with metastatic gastric cancer (mGC).
Methods: A retrospective descriptive study on patients with stage IV gastric cancer in the Oncology Center of Hue central hospital, Viet Nam, from 2015 to 2020. Before initiating treatment, demographic, clinical, and laboratory features as well as treatment methods were documented. The Kaplan - Meir test was used to estimate overall survival. Prognostic factors of survival were identified using the Cox model.
Results: There were a total of 167 patients, with a median age of 58. The majority of patients had BM under 18.5 kg/m2 (64.1%) and KPS above 80 (86.8%) prior to treatment. The most common clinical symptom was epigastric pain (73.7%). 86.2% of patients had serum albumin levels below 35g/L. 64.0% of patients underwent palliative surgery, including 69.2% who had gastrectomy. The chemotherapy rate was 59.9%, with 93.0% multidrug cytotoxic regimens. The median survival was 11 months. By using multivariate analysis, serum albumin (95%CI: 1.055 - 3.190, p = 0.032), palliative surgery (95%CI: 0.407 - 0.873, p = 0.008), and multidrug chemotherapy regimens (95%CI: 0.424 - 0.920, p = 0.017) were independent prognostic factors.
Conclusion: Patients with stage IV gastric cancer have poor overall survival at 11 months. Low serum albumin, palliative surgery, and doublet/triplet chemotherapy were four independent prognostic factors.
Severe croup in children infected with SARS-COV-2
Authors: Ho Quan
Published: May 2023

ABSTRACT Croup (laryngotracheitis) is frequently encountered in the emergency department among young children presenting with stridor. We described two previous healthy children who were admitted to our emergency department (ED) as the first documented cases of severe croup as a manifestation of SARS-CoV-2 infection in our hospital. Both cases (9 months and 8 months) presented with non - specific upper respiratory tract symptoms that developed into a barky cough with associated stridor at rest and respiratory distress. All were diagnosed with SARS-CoV-2 by antigen Rapid test from nasopharyngeal samples. Each received multiple doses of nebulized racemic epinephrine with minimal to no improvement shortly after medication. Both were admitted and received several doses of dexamethasone, which is an atypical treatment in our hospital due to the prolonged duration of symptoms in each patient. Antibiotics were used for both cases. All patients were eventually discharged. Pathogen testing is usually not indicated in croup, but with “COVID-19 croup,” SARS-CoV-2 testing should be considered due to the prognostic significance and prolonged quarantine implications. Our limited experience with this newly described COVID-19 croup condition suggests that cases can present with significant pathology and might not improve as rapidly as those with typical croup.
Clinical characteristics and surgical outcomes of bad scar revision after congenital unilateral cleft lip surgery according to modified Millard’s technique
Authors: Nguyen Khanh
Published: May 2023

ABSTRACT
Objectives: To study the clinical characteristics and surgical results of bad scar revision after congenital unilateral cleft lip plastic surgery according to the modified Millard’s technique.
Methods: A prospective descriptive study with clinical intervention was carried out on 36 patients who had congenital unilateral cleft lip surgery according to Millard’s technique with bad scars, deformed lips and nose. They had second - phase surgery to revise these defects at Odonto - Stomatology Center, Hue Central Hospital from April 2021 to April 2023.
Results: Bad scar characteristics: Red lips: Keloid accounted for 27.8%; V-shaped notch accounted for 36.1%, one - sided thick lip accounted for 11.1%, one - sided thin lips accounted for 8.3%, lip contour deviation accounted for 69.4%; Lip skin deformity: Too short accounted for 25.0%, Deficiency of orbicularis obis accounted for 36.1%; Incision scars: Good scars accounted for 11.1%, Traction rate 86.1%, Keloid rate 2.8%; Nasal deformity: Too short nose pillar at a rate of 30.6%, Deviated nasal septum 41.7%, wide nostrils 97.2%, Little degree of alar rolling accounted for 47.2%, low alar at 63 .9%, hypoplastic and flat alars accounted for 11.1%. Results of surgery to revise bad scars: Healing results after 7 days: Good 94.4% Hematoma, bruise accounted for 5.6%; Results after 3 - 6 months: Excellent: 72.2% Very Good: 22.2%, Good 2.8%, Acceptable 2.8%.

Conclusion: Surgery to revise bad scars and lip - nose deformities by the modified Millard’s technique brings good results for patients.
Keywords: Unilateral cleft lip, Millard’s technique, nasolabial deformity.
Role of Next Generation Sequencing (NGS) in Plant Disease Management: A Review
Authors: Saeed Muhammad , Jamil Zainab , Shehzad Tayyab , Hasan Syed Zia ul , Bibi Riffat , Malik Safia Naureen , Matee-ur-Rehman Hafiz , Ahmed Raees
Published: May 2023

A high throughput technique used to determine a part of the nucleotide sequence of an organism’s genome is called next generation sequencing (NGS). NGS has been Proven revolutionary in genomics. Clinical diagnostics, Plant diseases diagnostic and other aspects of medical are now made possible by sequencing. Techniques of NGS: there are different techniques of NGS which are being used in real life sciences i.e., Illumina sequencing, Pyrosequencing, Roche 454 sequencing and Ion torrent sequencing. All vintage methods like culturing in bacterial, fungal, and viral samples are being suppressed by next generation sequencing. The potential for random metagenomic sequencing of sick samples to find potential pathogens has surfaced with the development of next-generation high-throughput parallel sequencing technology. NGS enables highly efficient, rapid, low-cost DNA or RNA high-throughput sequencing of plant virus and viroids genomes, as well as specific small RNAs generated during infection. Although this technique is not so much familiar in the field of plant diseases. However, its widespread application in agronomic sciences will make it possible to create solutions to future food-related challenges that involve biotic stress.
An Ethnobotanical Survey of Medicinal Plants Used for Primary Health Care from Patan Sher Khan and Surrounding Areas of District Sudhnoti, Azad Jammu and Kashmir, Pakistan
Authors: Liaqat Iqra , Hussain Sajjad , Abid Hajira , Ahmad Imtiaz , Arif Shameen , Anwar ul Haq Muhammad , Shaikh Fozia Parveen , Matee-ur-Rehman Hafiz , Mahmood Basharat
Published: May 2023

Life on mountains is difficult and people depend on medicinal plants for primary health care. Many of mountain areas of Azad Kashmir are unexplored from taxonomic and ethnobotanical point of view. This study was conducted to document the indigenous knowledge of medicinal plants of village Patan Sher Khan and allied areas of District Sudhnuti Azad Kashmir Pakistan. Field surveys were conducted during March 2020 to March 2021 for collection of medicinal plants knowledge following standard ethnobotanical methods. A total of 120 key informants were interviewed by using semi-structured questioners. The data were analyzed through ethnobotanical indices i.e., Relative frequency of citation (RFC), Use value (UV), Informant consensus factor (ICF) and Fidelity level (FL). A total of 37 medicinal plant species belonging to 32 genera and 25 families were recorded during the study. Dominant ethnomedicinal families were Fabaceae with 4 species followed by Moraceae and Rosaceae with 3 species each. Leaves were the most frequently used parts (36 %) and decoction was preferred medicinal preparation (19 use reports).  Highest relative frequency of citation was recorded for Ficus palmata (0.15) followed by Melia azedarchta (0.14) and highest use value was found for Dodonaea viscosa (0.58). The most valuable plant species of the study area are Ficus carica with 8 use reports and 48 use citations, Bauhinia variegata with 7 use reports and 45 use citations. The maximum value of FL was recorded for Berberis lyceum (100 %) and Plantago lanceolate, (100%). Based on documented data the reported ailments were grouped into 9 categories, The ICF values ranges between 0. 33 (sexual) to 0.90 (teeth and urinary). Medicinal plant knowledge is still alive and large papulation of area still depend on medicinal plants for primary healthcare. But medicinal plant knowledge is declining especially among younger people. Hence, there is an urgent need to document such precious knowledge by continuous ethnobotanical studies.
Market Integration of Wholesale Chilli Prices of Pakistan
Authors: Rais Mehar Ul Nissa , Mangan Tehmina , Sahito Jam Ghulam Murtaza , Wagan Hakimzadi , Qureshi Naeem Ahmed , Khushk Ghulam Mujtaba , Narejo Arshad Ali , Mirjat Zuheb Hussain
Published: May 2023

Vegetables hold very important and significant place in our diet, among vegetables chilli (Capsicum annuum L.)  is one of the most important vegetable crop of Pakistan. The vegetable’s market integration is the major problem in Pakistan and symbol of efficiency is integrated markets. The present study was conducted for domestic integration of four major chilli markets of Pakistan by using their monthly wholesale chilli prices of eighteen years (June 2000 to July 2019) by adopting Johan-sane integration approach. The Augmented Dickey Fuller (ADF) test revealed that prices are integrated at first difference and results of pair wise integration showed chilli markets of Pakistan (Hyderabad, Lahore and Quetta) are integrated in the long-run and in short run with strong relationship, except Peshawar market because of long distance, price variation & seasonal effects. The results of Vector Error Correction Model (VECM) showed significant adjustment of prices in almost three pairs of markets (Hyderabad, Lahore and Quetta) and the finding of Granger causality test showed the bidirectional and unidirectional causality relationship between the chilli markets. Granger causality tests have also indicated that unlike in other market pairs such as Lahore-Peshawar and Quetta-Peshawar have no causality direction on price formation between them. The government should design a network of chilli wholesale markets across the country that are nearly equal distance apart in order to improve market convergence and price transmission to make chilli more profitable.
Recursion Relation for Toeplitz Determinants and the Discrete Painlevé II Hierarchy
Authors:   Universit&, Chouteau Thomas ,   #233,   d'Angers, France, Tarricone Sofia ,   Université Paris-Saclay, France
Published: May 2023

Solutions of the discrete Painlevé II hierarchy are shown to be in relation with a family of Toeplitz determinants describing certain quantities in multicritical random partitions models, for which the limiting behavior has been recently considered in the literature. Our proof is based on the Riemann-Hilbert approach for the orthogonal polynomials on the unit circle related to the Toeplitz determinants of interest. This technique allows us to construct a new Lax pair for the discrete Painlevé II hierarchy that is then mapped to the one introduced by Cresswell and Joshi.
Évaluation des données TAMSAT d'estimation des précipitations dans la partie septentrionale du Cameroun
Authors: Kana Collins Étienne , Djangue Marlyse Nankap
Published: May 2023

Face aux lacunes des données d'observation de la pluviométrie au sol pour des besoins d'adaptation à la variabilité climatique, l'imagerie satellitaire est depuis quelques décennies utilisée pour la mise en évidence des nuages générateurs des précipitations. Parmi les produits de ce type les plus usuels, figurent les données TAMSAT (Tropical Applications in Meteorology using SATellite data) d'estimation des précipitations à partir des seuillages appliqués sur le canal infrarouge thermique pour l'identification des nuages à sommet froid. Des doutes persistent cependant sur la capacité de ces données à reproduire fidèlement les évènements pluvieux dans la zone soudano-sahélienne, particulièrement exposée aux aléas pluviométriques. Il devient de ce fait nécessaire de les évaluer à partir des mesures au sol.L'objectif de ce travail est donc de valider les estimations TAMSAT sur le Nord Cameroun en utilisant les 24 postes pluviométriques pour lesquels on dispose de données mesurées en continu de 2001 à 2011. Les traitements appliqués à ces données comportent la production de moyennes, mensuelles et annuelles, et diverses techniques d'analyse spatiale (interpolation spatiale des données ponctuelles et opérations arithmétiques sur fichiers raster).Les résultats indiquent que les produits satellitaires TAMSAT peuvent en partie combler les insuffisances des mesures au sol, en raison de leur capacité à reproduire les principales caractéristiques (mensuelles, interannuelles et spatiales) des précipitations du Nord Cameroun. Mais l'étalonnage de TAMSAT conduit généralement à des biais : secs en zone soudanienne et humides en zone sahélienne. Ces biais peuvent se traduire par des écarts de 25 % par rapport aux lames d'eau observées in situ.
Mobilizzazione del paziente sottoposto ad Extracorporeal Membrane Oxygenation: revisione narrativa della letteratura
Authors: Maccarone Ilaria , Rosati Moris , D'ambrosio Francesco
Published: May 2023

I pazienti sottoposti a Extracorporeal Membrane Oxygenation (ECMO), sia veno-venoso che veno-arterioso, sono spesso sedati e mantenuti in stato di immobilità a causa dell'instabilità clinica, specialmente dal punto di vista emodinamico, e del rischio di decannulazione che la loro movimentazione potrebbe determinare. Tuttavia, studi sulla mobilizzazione precoce in altre categorie di pazienti critici evidenziano come questa pratica favorisca il recupero della massima autonomia del paziente, della funzione respiratoria e motoria, acceleri il processo di svezzamento dalla ventilazione meccanica e prevenga le altre complicanze legate all'immobilità, favorendo il benessere psicologico del paziente.
Essere infermiere di Area Critica oggi
Authors: Giusti Gian Domenico
Published: May 2023

Questa definizione sui quarant'anni, reperibile online con una semplice ricerca, fotografa quello che sta vivendo Aniarti in questo lungo biennio caratterizzato da numerosi cambiamenti, mentre compie i suoi primi 40 anni.
Aniarti: 40 anni di attività scientifica
Authors: Benetton Maria
Published: May 2023

In questo anniversario, è difficile ripercorrere tutte le esperienze a cui Aniarti ha dato vita, alcune con molto successo che si sono ripetute negli anni, altre meno rispondenti. Ma l'attività  scientifica vive di queste variabili e non ne siamo stati immuni. Quello che però ha sempre contraddistinto nella qualità  scientifica di Aniarti, sono state certamente le proposte congressuali, sia regionali che quelle nazionali. Quaranta anni fa le offerte formative non erano nè diffuse, nè tanto meno ampie; ovviamente non esisteva il sistema ECM (si dovrà  attendere il 2002) e l'aggiornamento fornito dalle strutture sanitarie di appartenenza era estremamente variegato.
Conjugator lengths in hierarchically hyperbolic groups
Authors: Abbott Carolyn , Behrstock Jason
Published: May 2023

In this paper, we establish upper bounds on the length of the shortest conjugator between pairs of infinite order elements in a wide class of groups. We obtain a general result which applies to all hierarchically hyperbolic groups, a class which includes mapping class groups, right-angled Artin groups, Burger–Mozes-type groups, most 3-manifold groups, and many others. In this setting, we establish a linear bound on the length of the shortest conjugator for any pair of conjugate Morse elements. For a subclass of these groups, including, in particular, all virtually compact special groups, we prove a sharper result by obtaining a linear bound on the length of the shortest conjugator between a suitable power of any pair of conjugate infinite order elements.