bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Health-Based Intervention on Knowledge, Attitude, and Practice of First-Grade High School Students
Authors: Mazloomy Mahmoodabad Seyed Saeed , Rezazadeh Mahdieh , Askarishahi Mohsen , Vakili Mahmoud 
Published: May 2019

Introduction: Students' health of is of great importance because they account for a large part of community. Schools play an important role in the transfer of health information to students. The purpose of this study was to investigate the effect of a health-based intervention on the knowledge, attitude, and practice of high school students in Mehriz city.

Methods: In this semi-experimental study with pretest-posttest design, 260 first-grade high school students were studied in Mehriz city in 2016-2017. The data collection tool was five sections of the Global school-based student health survey (GHSH). The questionnaires were completed by students before and three months after the intervention. Data were analyzed by SPSS 20 using z test, t-test, ANOVA, McNemar's test, and chi-squared test.
Results: After the intervention, a significant difference was observed between the students' scores in the pre- and post- intervention steps with regard to taking milk and dairy at least twice per day, consuming vegetables, washing hands before eating in school, brushing twice or more daily, exercising for at least 60 minutes per day, and having insufficient sleep at night due to being worried about various issues (P<0.05). The intervention was also effective on the mean (±standard deviation) scores of knowledge about mental health, nutrition, and oral health, as well as mean(±standard deviation) scores of attitudes toward physical activity, oral health, and nutrition (P<0.05).

Conclusion: Health interventions can increase health promoting behaviors and enhance knowledge and attitudes in students. Therefore, it is recommended to use interventional programs using available facilities in schools.
Female Teenagers' Lifestyle in preventing Osteoporosis in Yazd in 2014
Authors: Fallahzadeh Hossein , Momayyezi Mahdieh 
Published: May 2019

Introduction: Osteoporosis is a metabolic and preventable disease. Prevention of this disease should begin during adolescence. Life style behaviors have an important role in this regard. This study was conducted to determine the lifestyle of female teenagers in relation to the prevention of osteoporosis in Yazd in 2014.
Methods: A descriptive-analytic study was conducted on 500 female teenagers selected by cluster sampling method in Yazd. Data were collected by questionnaire, which validity and reliability were confirmed. Data analysis was performed using SPSS-16. Statistical analyses included descriptive statistics, T-test, and ANOVA.
Results: In the field of bone disease, 3.3percent of participants stated that they suffered from bone disease, 0.9 of the student had a history of fracture of spine, and 0.4 had a history of fracture in their ribs. In addition, 79.2 percent stated that they received direct sunlight for a long period daily. In the field of receiving food, results showed that 6.8 percent of students used milk and cheese every day. Furthermore, 82.3 percent of participants indicated consumption of milk and cheese 4-6 times per week and 9.1 percent reported 0-3 times per week. In the field of physical activity, 70.1 percent of adolescents exercised during the last week and the frequent physical activity was walking in most of them (75.3%).
Conclusion: Considering the effect of lifestyle such as diet, exercise, and exposure to sunlight on osteoporosis, educational programs should be conducted over proper nutrition, public sports, and lifestyle changes to prevent this complication
Operative Treatment for a Painful Nonunion Avulsion Fracture of the Femoral Attachment of the Medial Collateral Ligament in a Teenager
Authors: Calcei Jacob G. , Henry Jensen K. , Suryavanshi Joash R. , Schachne Jonathan M. , Fabricant Peter D. 
Published: May 2019

Case:
A 13-year-old female gymnast presented with medial knee pain despite several months of nonoperative management for a valgus hyperextension injury resulting in a bony avulsion fracture of the medial collateral ligament (MCL) origin at the medial femoral condyle. The MCL was repaired via open reduction and internal fixation (ORIF) with a single 4.0 mm cannulated screw and washer.

Conclusions:
ORIF is a successful treatment option for extra-articular bony MCL origin avulsion fractures that fail conservative treatment. Following surgical intervention and structured physical therapy, our patient had full return to sports at 10 months.
Liver recipient quality of life analysis
Authors: Kosmacheva E. D. , Babich A. E. , Malysheva S. Y. 
Published: May 2019

The aim of the study– to evaluate the quality of life of patients after liver transplantation.Patients and methods. The quality of life of patients after liver transplantation was studied with the help of «SF-36 Health Status Survey» questionnaire and correlation analysis of all scales of the questionnaire with the MELD indices, Child-Pugh before transplantation, SCORE before and after transplantation, body mass index, immunosuppressants, presence of tumor, encephalopathy, hepatitis transplant was performed.The results. In the surveyed group, the average indicators on the scales «physical functioning» were reduced by 31.3%, «role functioning due to physical condition» - by 60.8%, «pain intensity» - by 13.2%, «general health condition» - by 33.4%, «Life activity» by 19.9%, «social functioning» by 19.8%, «emotional role functioning» by 52.9%, «mental health» by 11.7%, «physical component of health» by 24.5% and «psychological component of health» by 15.6%. Between hepatitis grafts and psychological health, as well as between the presence of tumors and pain intensity, the correlation coefficient is greater than 0.25, and the significance levels of both chi-square criteria are less than 0.05.Conclusions. Liver recipients have the lowest quality of life on the role-playing scale due to their physical condition compared to healthy liver recipients. A moderate statistically significant relationship between hepatitis grafts and psychological health, as well as the presence of tumors and pain intensity, has been revealed. There are no gender differences in all components of QL in the group of liver recipients.
The modern ideas about the etiology of irritable bowel syndrome
Authors: Sakhautdinova G. M. , Nagaeva R. R. , Asanbaeva K. E. 
Published: May 2019

This article is devoted to the theme of the etiology of irritable bowel syndrome. This topic is highlighted in comparison with the Roman diagnostic criteria of III and IV revision. The following is considered: the theory of disturbed interaction within the «brain-gut» axis and visceral hypersensitivity induced in this way, as well as a possible mechanism for its implementation; also, the relationship of symptoms of IBS with patients’ mental state: anxiety, depression, sleep disorders. The relationship of IBS with microbiota of the intestine, the genetic mediation of IBS, the examples of candidate genes in biomarkers; the mechanisms of work of these genes are also described; the issue of intolerance to certain foods (FODMAPs, IgE-mediated hypersensitivity) in patients with IBS is highlighted as well; immunological aspects, including the theory of subclinical inflammation (low-grade inflammation) or post-infection IBS.
Assessment of efficiency of therapy at patients with the gastroesophageal reflux disease in age aspect
Authors: Denisova O. A. , Livzan M. A. , Denisov A. P. , Kuhn O. A. 
Published: May 2019

The demand of work is connected with prevalence a gastroesophageal reflux disease (GERB) against the background of insufficient study of age features of a course of this disease in the senior age groups. The research cohort made 96 patients with GERB. All patients were divided by method of randomization into two equal groups by quantity: the first – the persons receiving пантопразол 40 mg/days, the second – омепразол in a dose of 20 mg/days. Comparative study of efficiency of reception of an omeprazol and pantoprazol in age aspect at patients with GERB from positions of assessment of indicators of the quality of life (QL) was carried out. Indicators of KZh estimated on a visual and analog scale and the questionnaire of SF-36. Direct correlation connection between the level of health of patients and the following factors is established: existence of heartburn, the general time рН <4.0, number of refluxes in a minute, duration of the most long reflux in minutes. It was reasoned it is shown that at persons of the senior age groups in treatment of GERB пантопразол is more effective medicine, than омепразол. Patients of young and average age of the convincing proof have advantages of a pantoprazol before omeprazoly is not found. The result of the carried-out therapy in many respects is defined by degree of commitment of the patient. Therefore the choice of optimum approach to purpose of concrete medicine has to be carried out taking into account assessment of its safety, availability and the acceptability from the point of view of the patient.
A modified controller design based on symbiotic organisms search optimization for desalination system
Authors: Rathore Natwar S. , Singh V. P. , Phuc Bui Duc Hong 
Published: May 2019

Abstract
Fresh water demand is growing drastically in many parts of the world. Desalination of seawater, brackish water, and waste water is one solution to meet the demands of fresh water. Currently, reverse osmosis (RO) desalination process is one of the best methods for the desalination process. In this study, a modified controller design is proposed for RO desalination system based on symbiotic organisms search (SOS) algorithm. A multivariable model of RO desalination plant is considered for experimentation. The RO system considered here is first decoupled using a simplified decoupling process to obtain two non-interacting loops. Then, a proportional-integral-derivative controller with second order derivative (PID-DD) scheme based on SOS algorithm is proposed for each loop to find optimal control parameters of the RO system. To design the PID-DD controller for each loop, integral of squared error (ISE) is considered as fitness function. Four other state-of-the-art optimization algorithms, namely, teacher-learner-based-optimization (TLBO), differential evolution (DE), particle swarm optimization (PSO), and artificial bee colony (ABC), algorithms are also tested for the considered system. To show competitiveness of the proposed SOS-based PID-DD controller, a comparative study based on time domain analysis is performed. Results show the SOS-based PID-DD controller is superior to other PID-DD controllers.
Synthesis and Study of Fluorescent Forest-like Carbon Nanotubes Doped with Oxides of Rare-earth Elements
Authors: Guillén Patsy Y.A. , Kharissova Oxana V. , Selvas Romeo , Kharisov Boris I. 
Published: May 2019

Background:
Methods for obtaining the hybrids of multi-wall carbon nanotubes
(MWCNTs) and rare earths are in progress. Such composites may possess luminescent properties,
which could be of interest for various areas, in particular, medicine (imaging), engineering (fluorescent
polymers, LED and relative materials), among other applications. Lanthanide oxides, additionally,
can serve as catalysts for MWCNTs formation and catalysts of several organic reactions.

Objective:
The goal of this work is to obtain the composites of MWCNTs with strontium aluminate,
doped with several lanthanides (Eu, Ce, La, Nd, and Sm), via the spray pyrolysis method and to study
the properties of the formed hybrids.

Methods:
The spray pyrolysis method in the temperature range from 780 to 850oC, starting from toluene
as a carbon source and ferrocene as a catalyst precursor. SrAl12O19 doped with rare-earths were
added to carbon matter in the ultrasonic field.

Methods:
Among various structures, the forest-like nanostructures have been observed in some cases.
The formed coated carbon nanotubes possess fluorescent properties due to the attachment of lanthanide-
doped ceramic compound (SrAl12O19) to their surface, allowing the emission control for each dopant:
yellow (Nd2O3), blue (Eu2O3 and Sm2O3), intense orange (La2O3), light orange (Ce2O3).

Conclusion:
MWCNTs decorated with strontium aluminate (SrAl12O19), doped with a series of lanthanide
oxides (Nd2O3, Eu2O3, La2O3, Ce2O3, Sm2O3), were obtained by the spray pyrolysis technique
on the surface of optical fibers. Lanthanum- and cerium-containing coatings were found to show a better
deposition on the MWCNTs surface, exhibiting uniform coating. MWCNTs, coated with Nd-, Ce-,
and Eu-doped SrAl12O19 were shown to reveal the best conductive properties.
Accounting power supply schemes for traction substations in the calculation of short circuits in the AC traction network
Authors: Zharkov Yu. I. , Popova N. A. , Figurnov E. P. 
Published: May 2019

When calculating short-circuit currents in the AC traction network, it is assumed that each of the traction substations receives power from uncoupled external power supply sources with known resistances. In some cases, especially when powering a group of traction substations from a high-voltage power line of a longitudinal power supply, the external power supply system affects not only the magnitude of short-circuit currents, but also their redistribution between adjacent traction substations of the interstation area where this circuit is considered. Such unrecorded redistribution can have a negative effect on short circuit protection. The article considers the equivalent circuit of the traction network, taking into account resistance of the external power supply system. Particular attention is paid to the fact that in replacement circuits of direct and negative sequence value of reduced resistance of one phase of a multiwinding transformer, calculated from the short circuit voltage, does not depend on the connection scheme of its windings. It is noted that in some cases it is difficult to obtain a complete scheme of an external power supply system. Considering that the short circuit in the traction network for the external power supply system is remote, it is proposed taking into account the reference network or traction substations as power sources, from which high-voltage transmission lines power the traction substations. Resistance of the supporting substations as power sources must takes into account connected equivalent power system.Such equivalenting should be carried out by known values of currents or short-circuit powers at the inputs of the reference substation or, if such information is not available, by the rated values of the switched-off currents or powers of the switches of high-voltage line connections.The following power schemes for traction substations are considered: each from its own supporting substation, which is part of an electrically uncoupled external power supply system; from the double-circuit high-voltage line of longitudinal power supply when it is powered from different supporting substations; from the supporting network substation, the traction substation receives power from two lines, and from this the traction substations receive power from two lines in a circle pattern.These three common cases cover all the most common power schemes for traction substations. For each of them formulas are given to determine the resulting equivalent resistance of the external power supply circuit, which should be taken into account in the replacement circuit of the traction network.
Methodology for calculating financial result for the owner of the infrastructure from increasing carrying capacity of the direction during operation in cars with increased capacity
Authors: Miroshnichenko O. F. , Oginskaya A. E. 
Published: May 2019

In accordance with the draft Long-Term Development Program of the JSC “Russian Railways” until 2025, the main driver of growth in freight turnover in this perspective will be a further increase in the transportation of hard coal. It will occur both due to the growth of coal production in Kuzbass and due to the development of new coal deposits. For the period up to 2025, the increase in coal loading by 4 – 5 % per year is predicted on rail transport. Under these conditions, it becomes necessary to increase the capacity of the transport complex, especially the carrying and transport capacities of the Eastern Operation Area.The article presents the methodology for calculating economic effect of increasing the carrying capacity of the site during operation in cars with increased axle load. The scope of this methodology is speciﬁc areas (sections), taking into account their technical, operational and economic parameters.Variant calculations were made, the results of which showed that an increase in the carrying capacity of a section with an increase in the mass of a train formed from cars with increased axle loads does not always give a signiﬁcant positive effect in terms of value for the infrastructure owner. Positive effect of the increase in carrying capacity in the form of additional profits from the additionally used traffic volume in the evaluated variant can be taken into account in the following cases:- operation of large-capacity cars on freight-intensive sections where there is a lack of carrying capacity in the billing period, i. e. the carrying capacity of the section is less than its required value;- exceeding the freight charge for the additional volume of freight carriage incurred transportation costs, i. e. if the tariff compensates for at least the dependent part of the cost of additional volume transportation.Positive economic effect of the increase in carrying capacity in the form of increased money ﬂow is achieved if the proﬁt from the additional trafﬁc volume in the direction exceeds the additional costs associated with changing the technology for servicing the traction arms while promoting high-weight trains formed from cars with increased axle loads. In other words, if there is no increase in the value of the indicator of mileage (in section-km) per unit of transport work, and the unit cost of maintaining one section with a new technology for servicing traction arms.
SEISMIC REACTION OF NONLINEAR SYSTEM OF SEISMIC DEFENSE WITH KINEMATIC SUPPORTS
Authors: Abakarov A. D. , Zajnulabidova H. R. 
Published: May 2019

Objectives. The aim of the study is to obtain formulae for calculating probability of seismic response characteristics of nonlinear seismic isolation system with the specified function "force-shifting", characteristic of seismic isolation system with kinematic pillars and score the effectiveness of this system of seismic isolation in multi-storey buildings.Method. The studies were performed analytical techniques and numerical method of statistical tests.Result. Analytical expressions to calculate the mean square value of one massive seismic isolation system with displacement kinematic pillars and the effectiveness of the application of graphs of kinematic seismic isolation bearings for multi-storey buildings based on the results of numerical experiments using the method of statistical tests.Conclusion. Application of kinematic supports, with "power-move" described by the specified in the work of a non-linear function, allows you to reduce the seismic loads on buildings and distortions of floors 2 or more times. Kinematic bases are more effective when high-frequency effects and in the buildings of the constructive solution of a height of not more than 5 floors.
THE EFFECT OF PRELIMINARY ELECTRIC RADIO HEATING ON THE PHYSICAL AND THERMAL CHARACTERISTICS OF THE HEAT-RESISTANT CERAMZITONE-CONCRETE BASED ON COMPOSITIVE BINDER OF LOCAL MINERAL RAW MATERIALS
Authors: Alkhasova Yu. A. , Gadzhiev A. M. , Khadzhishalapov K. N. , Hezhev T. A. 
Published: May 2019

Objectives. The aim of the study is to increase the physico-thermal and operational characteristics of heat-resistant ceramsite concrete with an activated binder by pre-heating the mixture.Method. To conduct the study, a technique was developed by the Research Institute of Concrete and Reinforced Concrete named after A.A. Gvozdev.Results. An analysis of the study results of the effect of preliminary electric heating on the physico-thermal characteristics of heat-resistant ceramsite concrete on the basis of a composite binder showed that, in comparison with drying at a temperature of 105º, the operational properties of heat-resistant ceramsite concrete are enhanced by uniform heating of the samples along the concrete body. This isdue to the pore pressure in the concrete structure being reduced by removing physically bound water. Ceramsite is used as large filler while ceramsite sand is used as small filler; activated composite combination of local mineral raw materials consisting of Portland cement and calcined argillic clay is used as a binder. In the concrete body, due to the removal of physically bound water caused by the decrease in pore pressure, the formation of cracks in the interporal partitions decreases, preventing the explosive destruction of heat-resistant ceramsite concrete and improves its physico-mechanical, thermal and operational characteristics. Activated composite binder based on the combination of Portland cement and fine ground argillite clay reduces shrinkage deformations and increases the concrete strength as well as its heat resistance. Concretes with activated composite binder are less susceptible to volume change during the heating process,contributing to greater preservation of concrete strength and structure due to lower stress levels caused by the temperature deformations.Conclusion. The composition of the developed heat-resistant ceramsite concrete allows its use for monolithic lining of the walls of a tunnel kiln for burning ceramic bricks, as well as various concreting furnaces for the construction industry. The conducted research demonstrates the possibility and expediency of using electric heating for the hardening of heat-resistant ceramsite concrete with a composite binder. The use of electric heating increases the strength of heat-resistant ceramsite concrete both before and after heating to high temperatures. Optimised modes of electric heating of heat-resistant ceramsite concrete with a composite binder are established.