bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of CuO and Graphene on PTFE Microfibers: Experimental and Modeling Approaches
Authors: Hegazy Maroof A. , Ezzat Hend A. , Yahia Ibrahim S. , Zahran Heba Y. , Elhaes Hanan , Gomaa Islam , Ibrahim Medhat A.
Published: March 2022

The surface of pure polytetrafluoroethylene (PTFE) microfibers was modified with ZnO and graphene (G), and the composite was studied using ATR-FTIR, XRD, and FESEM. FTIR results showed that two significant bands appeared at 1556 cm−1 and 515 cm−1 as indications for CuO and G interaction. The SEM results indicated that CuO and G were distributed uniformly on the surface of the PTFE microfibers, confirming the production of the PTFE/CuO/G composite. Density functional theory (DFT) calculations were performed on PTFE polymer nanocomposites containing various metal oxides (MOs) such as MgO, Al2O3, SiO2, TiO2, Fe3O4, NiO, CuO, ZnO, and ZrO2 at the B3LYP level using the LAN2DZ basis set. Total dipole moment (TDM) and HOMO/LUMO bandgap energy ΔE both show that the physical and electrical characteristics of PTFE with OCu change to 76.136 Debye and 0.400 eV, respectively. PTFE/OCu was investigated to observe its interaction with graphene quantum dots (GQDs). The results show that PTFE/OCu/GQD ZTRI surface conductivity improved significantly. As a result, the TDM of PTFE/OCu/GQD ZTRI and the HOMO/LUMO bandgap energy ΔE were 39.124 Debye and ΔE 0.206 eV, respectively. The new electrical characteristics of PTFE/OCu/GQD ZTRI indicate that this surface is appropriate for electronic applications.
Fabrication and Characterization of Transparent and Uniform Cellulose/Polyethylene Composite Films from Used Disposable Paper Cups by the “One-Pot Method”
Authors: Wang Lixiang , Zhou Qiwen , Ji Xiaoqian , Peng Jianfeng , Nawaz Haq , Xia Guangmei , Ji Xingxiang , Zhang Jinming , Zhang Jun
Published: March 2022

Disposable paper cups are usually composed of high-grade paper board and an inner polyethylene coatings and are extensively used in daily life. However, most disposable paper cups are only used for a short time and then incinerated or accumulated in landfill at the end of their service due to the difficulty in separating the components, leading to a serious threat to our ecosystem. Therefore, developing a facile and green method to recycle and reuse disposable paper cups is vital. By using ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) as a solvent, transparent and homogenous cellulose/polyethylene composite films were successfully prepared from used bamboo-based disposable paper cups through the “one-pot method”, without any pre-treatment. It was found that there was a transformation of cellulose I to II after the dissolution and regeneration processes, and the crystallinity degree of the regenerated cellulose-based materials decreased significantly, resulting in a change in thermal properties. Meanwhile, compared to traditional pure cellulose films, the composite films possessed good UV-shielding properties and hydrophobicity. Moreover, they also displayed good mechanical properties. Additionally, the size of the ground PE coatings displayed obvious effects on the structures and properties of the composite films, where the CPE100 (sieved with 100–200 mesh) possessed the most homogeneous texture and the highest tensile strength (82 Mpa), higher than that of commercial polyethylene film (9–12 MPa), showing superiority as packaging or wrapping materials. Consequently, the goals to fabricate uniform cellulose/polyethylene composite films and valorize the solid waste from disposable paper cups were simultaneously achieved by a facile and green “one-pot method”.
Characterizing the Structural Behavior of FRP Profiles—FRCM Hybrid Superficial Elements: Experimental and Numerical Studies
Authors: Eskenati Amir Reza , Mahboob Amir , Bernat-Maso Ernest , Gil Lluís
Published: March 2022

Composite materials have been increasingly used to produce hybrid structures together with concrete. This system is commonly applied to bridges and roof structures. The main idea of the current research was to extend this approach by replacing the concrete with a fabric-reinforced cementitious matrix (FRCM) composite, resulting in a combination of composite materials. The main aim was to characterize the structural behavior of fiber-reinforced polymer (FRP) profiles and FRCM hybrid superficial elements. Two different prototypes of the hybrid superficial structural typology were tested to cover bidimensional and three-dimensional application cases of the proposed technology. After mortar cracking, the experimental results revealed a ductile response and a high mechanical capacity. A finite element model was implemented, calibrated, and validated by comparing numerical data with experimental results of the two prototypes. The output was a validated model that correctly captured the characteristic response of the proposed technology, which consisted of changing the structural response from a stiff plate configuration to a membrane type due to cracking of the FRCM composite part of the full solution. The suggested numerical model adequately reflected the experimental response and proved valuable for understanding and explaining the resistive processes established along this complicated FRP-FRCM hybrid structure.
Biomimetic, Highly Reusable and Hydrophobic Graphene/Polyvinyl Alcohol/Cellulose Nanofiber Aerogels as Oil-Removing Absorbents
Authors: Feng Peiyuan , Wang Xiwen , Yang Jin
Published: March 2022

Aerogels have great potential in oil absorption applications; however, many reported aerogels have the drawbacks of a low oil-recovery rate and poor mechanical properties, which limit their application. In this study, highly reusable graphene oxide (GO)/TEMPO-oxidized cellulose nanofiber (TOCN)/polyvinyl alcohol (PVA) aerogels with excellent mechanical properties and with an architecture similar to that of Thalia dealbata stems were fabricated through a three-step process of bidirectional-freezing, freeze-drying, and chemical vapor deposition (CVD) modification. After CVD modification, the modified GTPA (MGTPA) accorded hydrophobicity. The synergistic effects of the three components and the unique biomimetic structure conferred biomimetic-MGTPA (b-MGTPA) with excellent compressible properties. As an adsorbent, b-MGTPA showed a high adsorption capacity (75–151 g/g) for various types of organic solvents. In addition, its high compressibility enables b-MGTPA to have fast and highly efficient recovery of absorbed oil through simple mechanical squeezing and it possesses excellent reusable stability (the oil recovery rate and oil retention rate reached 80% and 91.5%, respectively, after 10 repeated absorption–compression cycles).
Effect of Gas Counter Pressure on the Surface Roughness, Morphology, and Tensile Strength between Microcellular and Conventional Injection-Molded PP Parts
Authors: Ren Jianping , Lin Long , Jiang Jing , Li Qian , Hwang Shyh-Shin
Published: March 2022

Microcellular injection-molded parts have surface defect problems. Gas counter pressure (GCP) is one of the methods to reduce surface defects. This study investigated the effect of GCP on the surface roughness, morphology, and tensile strength of foamed and conventional injection-molded polypropylene (PP) products. GCP is generated by filling up the mold cavity with nitrogen during the injection-molding (IM) process. It can delay foaming and affect flow characteristics of microcellular and conventional injection-molding, which cause changes in the tensile strength, flow length, cell morphology, and surface quality of molded parts. The mechanism was investigated through a series of experiments including tuning of GCP and pressure holding duration. Surface roughness of the molded parts decreased with the increase in GCP and pressure holding duration. Compared to microcellular IM, GCP-assisted foaming exhibited much better surface quality and controllable skin layer thickness.
Effect of Fiber Type and Content on Mechanical Property and Lapping Machinability of Fiber-Reinforced Polyetheretherketone
Authors: Gao Shang , Qu Jialu , Li Honggang , Kang Renke
Published: March 2022

Polyetheretherketone (PEEK) is a novel polymer material with excellent material properties. The hardness and strength of PEEK can be further improved by introducing fiber reinforcements to meet the high-performance index of the aerospace industry. The machinability will be influenced when the material properties change. Therefore, it is crucial to investigate the influence of material properties of the fiber-reinforced PEEK on machinability. In this paper, the main materials include pure PEEK, short carbon-fiber-reinforced PEEK (CF/PEEK), and short glass-fiber-reinforced PEEK (GF/PEEK). The effects of the fiber type and mass fraction on the tensile strength, hardness, and elastic modulus of materials were discussed using the tensile test and nanoindentation experiments. Furthermore, the fiber-reinforced PEEK lapping machinability was investigated using lapping experiments with abrasive papers of different mesh sizes. The results showed that the hardness and elastic modulus of PEEK could be improved with fiber mass fraction, and the tensile strength of CF/PEEK can be improved compared with that of GF/PEEK. In terms of lapping ability, the material removal rates of the fiber-reinforced materials were found to be lower than the pure PEEK due to the higher hardness of the fiber. During the lapping process, the material removal methods mainly included the ductile deformation or desquamation of reinforcing fiber and ductile removal of the PEEK matrix. The lapped surface roughness of PEEK material can be improved by fiber reinforcement.
Parametric Insurance—A Possible and Necessary Solution to Insure the Earthquake Risk of Romania
Authors: Radu Nicoleta , Alexandru Felicia
Published: March 2022

The rapid growth over recent decades of the impact of natural disasters on economies, especially in vulnerable areas, urges stakeholders to promote innovative solutions involving risk transfers that account for the new risk exposures. These proposed solutions are designed to optimize and expedite the indemnification process, which can ultimately be beneficial for both policyholders and insurers alike. This article explores the possibility of supplementing the current Romanian dwelling insurance protection scheme with a parametric mechanism. To determine the triggering parameter of the insurance pay-out, the authors consider various hazard scenarios developed based on historical events. This paper focuses on Probable Maximum Loss (PML) determination computed for events with epicenters in the Vrancea (a region and a mountain in the Carpathians) seismic area. This area is the most exposed in Romania to earthquakes, and it includes the capital, Bucharest, which is the urban area with the highest population concentration and, consequently, the highest exposure to the discussed risks.
Diversity Competence in Healthcare: Experts’ Views on the Most Important Skills in Caring for Migrant and Minority Patients
Authors: Ziegler Sandra , Michaëlis Camilla , Sørensen Janne
Published: March 2022

Many researchers and practitioners agree that a specific skillset helps to provide good healthcare to migrant and minority patients. The sciences offer multiple terms for what we are calling ‘diversity competence’. We assume that teaching and developing this competence is a complex, time-consuming task, yet health professionals’ time for further training is limited. Consequently, teaching objectives must be prioritised when creating a short, basic course to foster professionals’ diversity competence. Therefore, we ask: ‘What knowledge, attitudes and skills are most important to enable health professionals to take equally good care of all patients in evermore diverse, modern societies that include migrant and (ethnic) minority patients?’ By means of a modified, two-round Delphi study, 31 clinical and academic migrant health experts from 13 European countries were asked this question. The expert panel reached consensus on many competences, especially regarding attitudes and practical skills. We can provide a competence ranking that will inform teaching initiatives. Furthermore, we have derived a working definition of ‘diversity competence of health professionals’, and discuss the advantages of the informed and conscious use of a ‘diversity’ instead of ‘intercultural’ terminology.
Anti-Pandemic Policies in Estonia and Taiwan: Digital Power, Sovereignty and Biopolitics
Authors: Makarychev Andrey , Wishnick Elizabeth
Published: March 2022

Taiwan and Estonia are known as digital democracies facing threats from neighbors exploiting the vulnerabilities stemming from their degree of digitalization. Nevertheless, in their responses to the COVID-19 pandemic, Taiwan and Estonia have highlighted the strengths of digital democracy in combating a non-traditional security threat without employing the strong-arm tactics of authoritarian states. The goal of the article is to distinguish between vulnerability in cyberspace and digital power and put forward a conception of digital power to explain how Estonia and Taiwan were using their digital prowess to combat COVID-19. We argue that on one hand, their reliance on cybertechnology makes them particularly vulnerable to cyberattacks, but on the other their digital power enhances their global stature and domestic capacity to address threats such as COVID-19. The article starts by engaging with the ongoing academic debate on the concept of digital power and its political core. In the next section we adapt this concept to the policy practices of digital governance in Estonia and Taiwan. Lastly, we look more specifically at how investments in the IT sphere and e-governance were helpful for the two countries during the initial stage of the COVID-19 crisis. In conclusion, we highlight the paradox of two democracies choosing to extend the reach of the state into society through the use of digital tools to combat COVID-19. We further note that the pandemic provides a new biopolitical understanding of vulnerability and power in the digital realm.
STIHL Timbersports® and the Reconceptualization of Modern Sport in the Light of Decontextualization and Eventification of Forestry Work
Authors: Carlsson Bo , Lidström Isak , Yttergren Leif
Published: March 2022

This article examines STIHL Timbersports® and its amalgamation of craftmanship, competition, eventification and branding, through the lens of decontextualization of sport. It thus revisits and revitalizes the concept of sportification, as well as discusses the characteristics of sport such as authenticity and “uncertainty of outcome”. The aim of the article is to grasp the different processes that challenge our common positions regarding sport, which may in turn progress sport beyond the prevalent conceptualization of modern sport.
Influence of Endosperm Starch Composition on Maize Response to Fusarium temperatum Scaufl. & Munaut
Authors: Wit Marcin , Ochodzki Piotr , Warzecha Roman , Jabłońska Emilia , Mirzwa-Mróz Ewa , Mielniczuk Elżbieta , Wakuliński Wojciech
Published: March 2022

Fusarium temperatum Scaufl. & Munaut is a newly described taxon belonging to the Fusarium fujikuroi species complex (FFSC) and a frequent causative factor of maize ear rot. The aim of the present study was to determine the responses to the disease in maize populations differing in endosperm features that were classified to flint, dent, and a group of plants with intermediate kernel characteristics. In inoculation studies, substantial variation of host response to the fungus was found among the tested maize types. The dent-type kernels contained significantly less amylose (28.27%) and exhibited significantly higher rates of infection (IFER = 2.10) and contamination by beauvericin (7.40 mg kg−1) than plants of the flint maize subpopulation. The study documents a significant positive correlation between the Fusarium ear rot intensity (IFER) and ergosterol content (the R value ranged from 0.396 in 2015 to 0.735 in 2018) and between IFER and the presence of beauvericin (the R value ranged from 0.364 in 2015 to 0.785 in 2017). The negative correlation between (IFER) and amylose content (ranging from R = −0.303 to R= −0.180) stresses the role of the endosperm starch composition in the kernel resistance to Fusarium ear rot. The conducted study indicated that the risk of kernel infection and contamination with fungal metabolites (beauvericin and ergosterol) was associated with the maize type kernels.
Malignant Syphilis in a Female Patient: A Case Report and Mini-Review
Authors: Dimnik Julija , Benko Maja , Hosta Violeta , Murnik Rauh Andreja , Pagon Andreja , Špik Vesna Cvitković , Battelino Saba , Vozel Domen
Published: March 2022

Malignant syphilis (MS) is a rare form of secondary syphilis with grotesque skin lesions, systemic manifestation and life-threatening complications. This article presents a case of MS in an immunocompetent 41-year-old female, who initially manifested with a generalized nonpruritic erythematous rash and systemic symptoms. She was mistreated for generalized impetigo and hepatitis attributed to chronic alcoholism. After partial recovery and a 3-month latent period, she developed infiltrated plaques with crusts on the trunk, head and neck; pharyngitis and laryngeal lesions; generalized lymphadenopathy and nonspecific systemic symptoms. Serologic tests confirmed syphilis, and cerebrospinal fluid analyses indicated the presence of anti-treponemal antibodies. Urine drug screening was positive for cannabinoids. The polymerase chain reaction from skin biopsy samples identified T. pallidum, confirmed with Warthin-Starry staining. Immunohistochemical analysis was uncharacteristic. Tertiary syphilis, neurosyphilis, ocular syphilis and otosyphilis were excluded. However, the patient was treated for neurosyphilis with benzylpenicillin (18 million IU intravenously daily, 14 days) and corticosteroids. No Jarisch-Herxheimer reaction occurred. Ten months after treatment, residual scars were visible, and 1 year later, she attempted suicide. Since MS can resemble other diseases, it should be suspected in a mentally ill patient with chronic drug abuse, systemic nonspecific manifestations and dermatological abnormalities, including the head and neck region.
The Biological and Clinical Aspects of a Latent Tuberculosis Infection
Authors: Khabibullina Nelli F. , Kutuzova Daria M. , Burmistrova Irina A. , Lyadova Irina V.
Published: March 2022

Tuberculosis (TB), caused by bacilli from the Mycobacterium tuberculosis complex, remains a serious global public health problem, representing one of the main causes of death from infectious diseases. About one quarter of the world’s population is infected with Mtb and has a latent TB infection (LTBI). According to the World Health Organization (WHO), an LTBI is characterized by a lasting immune response to Mtb antigens without any TB symptoms. Current LTBI diagnoses and treatments are based on this simplified definition, although an LTBI involves a broad range of conditions, including when Mtb remains in the body in a persistent form and the immune response cannot be detected. The study of LTBIs has progressed in recent years; however, many biological and medical aspects of an LTBI are still under discussion. This review focuses on an LTBI as a broad spectrum of states, both of the human body, and of Mtb cells. The problems of phenotypic insusceptibility, diagnoses, chemoprophylaxis, and the necessity of treatment are discussed. We emphasize the complexity of an LTBI diagnosis and its treatment due to its ambiguous nature. We consider alternative ways of differentiating an LTBI from active TB, as well as predicting TB reactivation based on using mycobacterial “latency antigens” for interferon gamma release assay (IGRA) tests and the transcriptomic analysis of human blood cells.
Noncommutativity, Sáez–Ballester Theory and Kinetic Inflation
Authors: Rasouli S. M. M.
Published: March 2022

This paper presents a noncommutative (NC) version of an extended Sáez–Ballester (SB) theory. Concretely, considering the spatially flat Friedmann–Lemaître–Robertson–Walker (FLRW) metric, we propose an appropriate dynamical deformation between the conjugate momenta and, applying the Hamiltonian formalism, obtain deformed equations of motion. In our model, the NC parameter appears linearly in the deformed Poisson bracket and the equations of the NC SB cosmology. When it goes to zero, we get the corresponding commutative counterparts. Even by restricting our attention to a particular case, where there is neither an ordinary matter nor a scalar potential, we show that the effects of the noncommutativity provide interesting results: applying numerical endeavors for very small values of the NC parameter, we show that (i) at the early times of the universe, there is an inflationary phase with a graceful exit, for which the relevant nominal condition is satisfied; (ii) for the late times, there is a zero acceleration epoch. By establishing an appropriate dynamical framework, we show that the results (i) and (ii) can be obtained for many sets of the initial conditions and the parameters of the model. Finally, we indicate that, at the level of the field equations, one may find a close resemblance between our NC model and the Starobinsky inflationary model.
Head Tracking in Automotive Environments for Driver Monitoring Using a Low Resolution Thermal Camera
Authors: Weiss Christoph , Kirmas Alexander , Lemcke Sören , Böshagen Stefan , Walter Marian , Eckstein Lutz , Leonhardt Steffen
Published: March 2022

The steady enhancement of driver assistance systems and the automation of driving functions are in need of advanced driver monitoring functionalities. To evaluate the driver state, several parameters must be acquired. A basic parameter is the position of the driver, which can be useful for comfort automation or medical applications. Acquiring the position through cameras can be used to provide multiple information at once. When using infrared cameras, not only the position information but also the thermal information is available. Head tracking in the infrared domain is still a challenging task. The low resolution of affordable sensors makes it especially difficult to achieve high robustness due the lack of detailed images. In this paper, we present a novel approach for robust head tracking based on template matching and optical flow. The method has been tested on various sets of subjects containing different head shapes. The evaluation does not only include the original sensor size, but also downscaled images to simulate low resolution sensors. A comparison with the ground truth is performed for X- and Y-coordinate separately for each downscaled resolution.
Molecular Diagnosis of Cetacean Morbillivirus in Beaked Whales Stranded in the Canary Islands (1999–2017)
Authors: Felipe-Jiménez Idaira , Fernández Antonio , Arbelo Manuel , Segura-Göthlin Simone , Colom-Rivero Ana , Suárez-Santana Cristian M. , De La Fuente Jesús , Sierra Eva
Published: March 2022

A retrospective survey for detecting the cetacean morbillivirus (CeMV) was carried out in beaked whales (BWs) stranded in the Canary Islands (1999–2017). CeMV is responsible for causing worldwide epizootic events with the highest mass die-offs in cetaceans, although the epidemic status of the Canarian Archipelago seems to be that of an endemic situation. A total of 319 tissue samples from 55 BWs (35 Cuvier’s BWs and 20 specimens belonging to the Mesoplodon genus) were subjected to the amplification of a fragment of the fusion protein (F) and/or phosphoprotein (P) genes of CeMV by means of one or more of three polymerase chain reactions (PCR). RNA integrity could not be demonstrated in samples from 11 animals. Positivity (dolphin morbillivirus strain (DMV)) was detected in the skin sample of only a subadult male Cuvier’s BW stranded in 2002, being the earliest confirmed occurrence of DMV in the Cuvier’s BW species. The obtained P gene sequence showed the closest relationship with other DMVs detected in a striped dolphin stranded in the Canary Islands in the same year. A phylogenetic analysis supports a previous hypothesis of a cross-species infection and the existence of the circulation of endemic DMV strains in the Atlantic Ocean similar to those later detected in the North-East Atlantic, the Mediterranean Sea and the South-West Pacific.
Procedures for cognitive and synergetic observation and proactive control of power capacity of nickel-hydrogen storage batteries onboard a geostationary spacecraft
Authors: KOVTUN Vladimir S.
Published: March 2022

The paper presents methods of providing power resources for the mission of the Yamal-100 spacecraft from the secondary onboard power supply sources — nickel-hydrogen storage batteries. For the first time in the world practice of using metal-hydrogen electrochemical batteries installed in a common gas manifold a ~10-years operational life in orbit has been achieved for batteries operated onboard a geostationary satellite. A decline in power capacity of storage batteries could result in early termination of the spacecraft mission. Therefore, the energy resource of the storage battery was maintained through proactive management consisting of prediction and active control. The methods that were developed for continuous observation in the form of monitoring and diagnostics of the storage batteries status including estimation of the current discharge energy capacity made it possible to predict further degradation loss under conditions of insufficient power for the storage batteries cooling equipment. The active control consisted in using methods aimed at providing optimal operating conditions, fending off a potential development of an anomalous thermal situation within the electrochemical reaction zone, and regenerating the energy capacity. The control furthermore used the synergy effect produced by secondary energy interrelationships between onboard systems. This made it possible to meet the batteries operational life requirements under exposure to an unfavorable external factor in the form of an increasing heat impact on the batteries temperature control equipment. The increase in thermal load was caused by re-reflection of a portion of the luminous flux from structural elements of the spacecraft and an increase in solar absorption factor (aging) of thermal control coatings.
Key words: spacecraft, control process, nickel-hydrogen battery, provision of resources, energy capacity, proactive control, synergy.
A method for verifying the model of tank operational pressurization process during development of propellant supply system in liquid rocket engines of launch vehicle propulsion systems
Authors: BERSHADSKYI Vitaliy A. , SOKOLOV Boris A. , TUMANIN Evgeny N.
Published: March 2022

During development of propulsion systems for launch vehicles, in order to verify the design results, standalone developmental tests of propellant supply system components were run in specially designed test setups outfitted with the required instrumentation.
As an example of such work, this paper describes the experience of standalone developmental testing of operational pressurization of propellant tanks. During tests in the constructed test setups, heat and mass exchange processes were tried out with simulation of design modes of operational pressurization of propellant tanks filled with oxygen and hydrogen.
As a result of these tests, a rationale was provided for selection of working mediums as the pressurization gas, design and characteristics of gas injection into propellant tanks, a method for evaluating the efficiency of the pressurization process. Empirical dependences were obtained that were used as the boundary conditions in the models for practical calculations for refining the modes and evaluating the efficiency of the propellant supply subsystem of propulsion systems.
The paper calls attention to the need to use for the purpose of development of the propellant supply systems that involves computer simulations the results of such earlier work when designing advanced rocket propulsion systems.

Key words: propulsion system, propellant supply system, development of pressurization process, test setup, pressurization gas, propellant components, heat and mass transfer intensity, process efficiency, liquid surface sloshing, computer simulations.
FUNCTIONAL AND STRUCTURAL CONNECTIONS IN THE ARCHITECTURE OF MODERN INDUSTRIAL BUILDINGS
Authors: Erykov A.
Published: March 2022

today, up to 80% of buildings and structures are built on deep foundations, the main elements of which are concrete and reinforced concrete piles (hammered, bored and piles made according to CFA technology). Since the beginning of the mass use of drilling piles (the 60s of the last century), there is still a problem of ensuring the reliability of foundations, due to the fact that the process of installing piles is hidden from observation, and unacceptable defects may form in the pile trunks, which reduce the bearing capacity of piles and can lead the structure to an emergency condition. Pile construction technologies are constantly being improved, however, it is still not possible to avoid the appearance of defects in pile trunks because there are quite a lot of reasons for the formation of defects that it is not always possible to foresee and take into account. That is why, during the construction of deep foundations, output monitoring of the technical condition of drill pile shafts should be provided, which cannot be performed without the use of non-destructive diagnostic methods. The use of these methods and means, which implements them, should be mandatory to ensure the reliability and safety of the operation of buildings and structures and today is already provided for by numerous standards and regulatory documents. Currently, acoustic methods are mainly used for diagnostics, namely: single- and multi-channel acoustic logging; pulse Echo method with shock excitation of elastic waves (hereinafter referred to as the method of vibration-shock diagnostics). It should be noted that in the case of using high deformation to excite elastic waves, at which the impact energy on the end of the pile reaches the limit of proportionality, an assessment of the bearing capacity of experimental piles is given, and the low technique is used exclusively for diagnosing pile trunks. For a long time, these methods could not be widely implemented in the field. Their capabilities have increased significantly after the development of digital signal processing methods
THE PRACTICE OF USING TECHNICAL FABRICS IN THE PRODUCTION OF HEAT-RESISTANT SLEEVES
Authors: Dahno A. , Smirnov Yu. , Tenenev A. , Ryleeva I. , Alfer'eva V.
Published: March 2022

the article has developed and mastered promising technologies for the production of heat-resistant metallurgical hoses, which include the use of synthetic materials for the power frame and fire-resistant - cover fibrous materials. Experimental studies have been carried out to reduce the material consumption of the production of sleeves, due to changes in manufacturing technology at the stage of cutting the strips of the power frame and assembling the sleeves. A sleeve manufacturing technology is described, which provides for the introduction of a wire spiral into the sleeve design to protect the sleeves from loss of transverse stability and reduce the bending radius. Technical cord materials for the manufacture of a power frame for sleeves of various types in production are considered. The technology of protecting the outer surface has been mastered, providing for the creation of bumpers of various design schemes. In order to increase the temperature resistance of the operation of metallurgical heat-resistant sleeves, a technology has been created for the manufacture of sleeves based on non-flammable and fire-resistant fabric materials covering the sleeves on the outer surface. The operation of the hoses showed the correctness of the developed technologies and the choice of appropriate materials. Research work on the development of new fire-resistant materials for heat-resistant hoses has been carried out. The prospects of using innovative technology for manufacturing heat-resistant metallurgical hoses are noted
Le cavalier de Tyros, une figurine de bronze laconienne du VIe a.C.
Authors: Lanérès Nicole , Grigorakakis Grigoris
Published: March 2022

L’objet de cet article est la publication d’une figurine de bronze du milieu du vie av. J.-C., trouvée au début du siècle dernier en Cynourie sur le site du sanctuaire d’Apollon Tyritas (sur la côte orientale du Péloponnèse). Demeurée longtemps inconnue, elle est aujourd’hui conservée au musée de Tripoli (Arcadie). Cette figurine, qui représente un cavalier chevauchant un mulet, un canthare et une corne à boire à la main, revêt un intérêt exceptionnel à tout point de vue. Elle porte en alphabet laconien une dédicace à Apollon où l’on peut lire, pour la première fois dans un document antique, le nom de la cité de Tyros. Elle évoque en outre l’épisode du «Retour d’Héphaïstos sur l’Olympe » , qui n’était jusqu’à présent connu que par la peinture de vases. Chef d’oeuvre de la plastique laconienne, elle témoigne enfin, en même temps que de la vitalité du culte de Dionysos en Laconie, du rôle essentiel joué au vie av. J.-C. par les cultes périphériques, en particulier celui d’Apollon en Cynourie, pour l’unité de l’Etat spartiate.
Syntheses, Characterization, and X-Ray Crystal Structure of a Co-Crystal Containing One Neutral Mononuclear Copper (II) Unit and One Cationic Dinuclear Copper (II) Unit Assembled with Schiff Base and Perchlorate Copper(II) Salt
Authors: Diouf Ngoné , Thiam Ibrahima Elhadj , Sylla-Gueye Rokhaya , Retailleau Pascal , Gaye Mohamed
Published: March 2022

The use of 2-{[2-(2-hydroxybenzylideneamino)phenylimino]methyl}phenol (H2L) in metal transition chemistry has yielded a co-crystal which is composed by one neutral mononuclear, one cationic dinuclear and one perchlorate anion. During the formation of the complex, one of the salicylaldimine groups of one of the molecules of the H2L ligand hydrolyzed to form an asymmetrical ligand with an amino group leading to the molecule (2-((2-aminophenylimino)methyl)phenol (HL'). The complex was formulated as {[Cu(L)].[Cu2(L)(L')]}.(ClO4). The structure of the complex was solved by single crystal X-ray crystallography. In the mononuclear unit, the Cu2+ atom is coordinated by one dideprotonated molecule of the ligand acting in tetradentate fashion. In the dinuclear unit, one the Cu2+ atom is coordinated by one dideprotonated molecule of the ligand acting in tetradentate fashion and the other Cu2+ is coordinated by the monodeprotonated (2-((2-aminophenylimino)methyl)phenol (HL') acting in tridentate fashion. The two Cu2+ are bridged by the two phenoxo oxygen atoms of the dideprotonated molecule of the ligand. The complex crystallizes in the triclinic space group Pī with the following parameters: a = 13.8864 (3) Å, b = 14.2078 (4) Å, c = 14.5007 (4)) Å, α = 64.593 (3), β = 71.353 (2), γ = 71.707 (2)°, V = 2395.80 (13) Å3, Z = 2, R1 = 0.037, wR2 = 0.041. The supramolecular structures are consolidated by multiple hydrogen bonds.
Features of Providing of Dental Care to the Population of Kazakhstan in the Context of the COVID-19 Pandemic
Authors: Есембаева С.С.
Published: March 2022

Работа стоматолога сопряжена с высоким риском заражения коронавирусом. В статье приводятся рекомендации по соблюдению мер безопасности на стоматологическом приеме. Применение бормашины сопряжено с образованием мелкодисперсного аэрозольного потока, в котором присутствуют частицы слюны пациента, легко проникающие под обычную медицинскую маску. Если человек уже заражен коронавирусом – риск заражения врача и персонала может достигать 99,9%.Врач-стоматолог после контакта с носителем коронавируса может потенциально стать разносчиком инфекции для коллег, членов семьи. Опасность возрастает при применении ультразвуковых скалеров, установок Эйр Флоу, так как при проведении профессиональной чистки зубов образуется взвесь из воды и частичек слюны под давлением. Стоматологи должны быть защищены костюмами медперсонала, очками, касками, шлемами, 6–7-слойными масками и респираторами.Сбор жалоб и анамнеза, обсуждение плана лечения рекомендуется проводить по телефону. Особое значение приобретает соблюдение санитарно-дезинфекционного режима в стоматологическом кабинете.

The Dentist works carries a high risk of coronavirus infection. The article provides recommendations for observing safety measures at a dental appointment. The use of a drill is associated with the formation of a finely dispersed aerosol stream, in which there are particles of the patient’s saliva that easily penetrate under a conventional medical mask. If a person is already infected with coronavirus, the risk of infection of a doctor and staff can reach 99.9%.After contact with a carrier of the coronavirus, a dentist can potentially become a carrier of infection for colleagues and family members. The danger increases with the use of ultrasonic scalers, Air Flow devices, since a suspension of water and saliva particles under pressure is formed during professional teeth cleaning. The Dentists should be protected by nursing suits, goggles, hard hats, helmets, 6–7-layer masks and respirators.Collection of complaints and anamnesis, discussion of the treatment plan is recommended by phone. Of particular importance is the observance of the sanitary and disinfection regime in the dental office.
Treatment with Citicoline Eye Drops Glaucomatous Optic Neuropathy
Authors: Марченко Л.Н. , Далидович А.А. , Качан Т.В. , Муштина Т.А. , Терешенко О.В.
Published: March 2022

В статье приведены результаты лечения глаукомной оптиконейропатии у пациентов с развитой стадией первичной открытоугольной глаукомы глазными каплями цитиколина (OMK1R, Omikron, Италия). Применение препарата 3 раза в день в течение трех месяцев оказало положительное влияние на светочувствительность сетчатки (периметрические показатели MD и PSD), качество жизни и стабилизировало биометрические параметры: среднюю толщину перипапиллярного слоя нервных волокон, полный макулярный объем и соотношение площади экскавации и диска зрительного нерва. Глазные капли цитиколина обладают удовлетворительным профилем местной и системной безопасности, а также переносимости пациентами с первичной открытоугольной глаукомой.

The article presents the results of the treatment of glaucoma optic neuropathy in patients with a developed stage of primary open-angle glaucoma with eye drops of citicoline (ОМК1R, Omikron, Italy). The use of the drug 3 times a day for three months had a positive effect on the photosensitivity of the retina (perimetric indicators MD and PSD), quality of life and stabilized biometric parameters: the average thickness of the peripapillary layer of nerve fibers, the total macular volume and the ratio of the area of excavation and the optic disc. Citicoline eye drops have a satisfactory local and systemic safety profile, as well as tolerability in patients with primary open-angle glaucoma.
Chronic Intrathecal Administration of Analgesics (Literature Review, Clinical Example)
Authors: Алексеевец В.В. , Лихачев С.А. , Наумовская Н.А. , Боярчик В.П.
Published: March 2022

Хроническая боль – один из наиболее распространенных факторов, влияющих на качество жизни человека. В развитых странах количество взрослых людей, испытывающих хронический болевой синдром, достигает 13–50%, из них 10,4–14,3% испытывают выраженную, тяжелую боль. Одним из эффективных методов лечения тяжелой хронической не головной боли является метод хронического титрования анальгетиков в спинномозговой канал посредством программируемой имплантируемой помпы. Основное преимущество этого метода заключается в низкой дозе анальгетика (почти в 200 раз ниже по сравнению с внутривенным введением при том же обезболивающем эффекте) и низкой избирательности по отношению к типам болевых синдромов. Однако данный метод имеет ряд недостатков, главный из которых – угроза развития толерантности к опиатам. Тем не менее в настоящее время риск развития толерантности при хроническом интратекальном титровании морфина оценивается как 35,7%. В настоящее время в ГУ «РНПЦ неврологии и нейрохирургии» наряду с другими методами хирургического контроля тяжелого хронического болевого синдрома (деструктивные операции, хроническая стимуляция спинного мозга и др.) применяется хроническое интратекальное титрование морфина как метод последней линии в контроле тяжелых болевых синдромов туловища и конечностей.

Chronic pain is one of the most common factors that affect a person’s quality of life. In western countries, the number of adults who suffer from chronic pain syndrome reaches 13–50%, 10.4– 14.3% of them experience severe pain. One of the most effective methods of treating severe chronic non-headache pain is the method of chronic titration of spinal canal analgesics by means of a programmable implantable pump. The main advantage of this method is a low dose of analgesic (50–100 times lower if compared to parenteral administration with the same analgesiceffect) and low selectivity in relation to the types of pain syndromes. However, this method has a number of disadvantages, the main of which is the threat of developing tolerance to opiates. However, currently the risk of developing tolerance in chronic intrathecal titration of morphine is estimated as 35.7%. Currently, the State research center of neurology and neurosurgery, along with other methods of surgical control of severe chronic pain syndrome (destructive operations, chronic spinal cord stimulation, etc.), uses chronic intrathecal titration of morphine as a last-line method in the control of severe pain syndromes of the trunk and limbs.
Algorithm for Clinical Staging of a Cystocele
Authors: Нечипоренко А.С.
Published: March 2022

Введение. Документирующая диагностика цистоцеле, осложненного расстройствами мочеиспускания (РМ), – актуальная клиническая проблема.Цель. Разработка алгоритма для клинико-лучевого стадирования цистоцеле, осложненного РМ.Материалы и методы. Данные комплексного обследования 73 пациенток с цистоцеле, осложненным РМ в виде стрессового недержания мочи и затрудненного мочеиспускания, с использованием статической и функциональной МРТ.Результаты. Разработан алгоритм клинико-лучевого стадирования цистоцеле, основанный на оценке анатомо-томографического состояния парауретрального связочного аппарата и положения мочевого пузыря на основе измерений угла инклинации уретры.Выводы. Алгоритм клинико-лучевого стадирования цистоцеле позволяет провести объективную диагностику цистоцеле, осложненного РМ, способствует снижению количества необоснованных диагностических процедур, дает возможность обосновать тип оперативного лечения.

Introduction. The documenting diagnosis of cystocele complicated by urination disorders (UD) is an urgent clinical problem.Purpose. Development of an algorithm for clinical beam staging of cystocele complicated by UD. Materials and methods. Data from a comprehensive examination of 73 patients with cystocele complicated by UD in the form of stress urinary incontinence and difficulty urinating using static and functional MRI.Results. An algorithm has been developed for clinical and radiation staging of cystocele, based on the assessment of the anatomical and tomographic state of the paraurethral ligamentous apparatus and the position of the bladder based on measurements of the incidence angle of the urethra.Conclusions. The algorithm of clinical beam staging of cystocele allows an objective diagnosis of cystocele complicated by UD, helps to reduce the number of unjustified diagnostic procedures, makes it possible to justify the type of surgical treatment.
Childhood Adversity as a Factor of Self-Stigma in Patients with Schizophrenia
Authors: Лутова Н.Б. , Сорокин М.Ю. , Новикова К.Е. , Портениер С.Н. , Вид В.Д.
Published: March 2022

Введение. Пациенты с психическими расстройствами склонны к самостигматизации. Неблагоприятный детский опыт у них может являться фактором, предрасполагающим к более тяжелому типу реакции на давление социальной стигмы.Цель. Изучить взаимосвязи детской травмы с личностными характеристиками и самостигматизацией у больных шизофренией.Материалы и методы. 30 госпитальных пациентов, опросники/шкалы оценки неблагоприятного опыта (НДО), темперамента и характера (TCI), внутренней стигмы (ISMI). Использован дисперсионный анализ, приведены размеры эффектов для p≤0,05.Результаты. Описаны: 1) распространенность в выборке неблагоприятного детского опыта (40%) и внутренней стигмы (50%), 2) особенности детской травмы, стигмы и личности пациентов в зависимости от их пола, количества госпитализаций, диагностических подгрупп, склонность пациентов, перенесших в детстве негативный опыт, к чувству отчужденности, восприятию дискриминации, низкой самонаправленности.Выводы. Предложены стратегии минимизации влияния негативного детского опыта как элементов первичной, вторичной, третичной профилактики психических расстройств и психиатрической стигмы.

Background. Patients with mental disorders tend to self-stigmatize. Childhood adversity in them may be a factor predisposing to a more severe type of reaction of patients to the pressure of social stigma.Purpose. To study the relationship of childhood trauma with personal characteristics and self- stigmatization in patients with schizophrenia.Materials and methods. 30 hospital patients, questionnaires / scales for assessment of adverse childhood experiences (ACE), temperament and character (TCI), internalized stigma (ISMI). Dispersion analysis was used; the effect sizes were received for the results with p≤0.05.Results. 1. In the sample, the prevalence of childhood adversity was 40% and self-stigmatization – 50%. 2. The features of child maltreatment, stigma and personality were described depending on gender, number of hospitalizations, diagnostic subgroups. 3. Those of the subjects, who hadchildhood adversity, were tending to alienation, high perceived discrimination, and low self- direction.Conclusion. The strategies for minimizing the impact of psycho-social traumas in children were proposed as elements of primary, secondary, tertiary prevention of mental disorders and psychiatric stigma.
Rational Use of Medicines in the Provision of Medical Care for Children with Autism Spectrum Disorders
Authors: Мартыненко А.И. , Емельянцева Т.А. , Захаревич О.Ю.
Published: March 2022

В представленном обзоре изложен международный опыт применения лекарственных средств при лечении расстройств аутистического спектра с учетом международных клинических рекомендаций, метаанализов рандомизированных контролируемых исследований и актуальных научных публикаций. Описаны наиболее часто используемые лекарственные средства, а также приведены лекарственные средства, применяемые согласно клиническим протоколам и рекомендациям по лечению данной патологии в разных странах.

This review presents the international experience in the use of drugs in the treatment of autism spectrum disorders, considering international clinical guidelines, meta-analyses of randomized controlled trials and current scientific publications. The most used drugs are described, as well as the drugs used according to clinical protocols and recommendations for the treatment of this pathology in different countries.