bluuebunny/crossref_metadata_2025 huggingface dataset:
Indicators of dynamic balance by the method of star excursion balance test in athletes of different qualifications in Kyokushin karate
Authors:   Lviv State University of Physical Culture named after Ivan Boberski, Kindzer B. , Nikitenko S. ,   Lviv State University of Physical Culture named after Ivan Boberski, Vishnivetski S. ,   Lviv State University of Physical Culture named after Ivan Boberski
Published: February 2024

Purpose: to test and compare the indicators of dynamic balance by the method of star excursion balance test in sportsmen of different qualification in Kyokushin karate. Material and methods. The results of the research were obtained at the Lviv State University of Physical Culture named after Ivan Boberskyi at the department of «Fencing, boxing and national martial arts» in the period October-November 2023. Qualified male Kyokushin karate fighters aged 18-22 years old in the amount of 21 people took part in the collection of experimental material, among which there were 13 representatives with a level of training 1-2 Dan, and 8 representatives with a level (student belts) not higher than 1 Kyu. Among the participants of the research there are champions and prize-winners of national and international competitions in Kyokushin karate. Methods of the research: the analysis of literary sources and materials from the Internet; measurement of basic anthropometrical indicators of sportsmen (height, weight, length of arms and legs); measurement of indicators of Star Excursion Balance Test (SEBT); methods of mathematical statistics (calculation of statistical indicators of the arithmetic mean (Mean), standard deviation of the arithmetic mean (Std.Dev.), comparison of results by the statistical method Mann-Whitney U-test with the help of the standard package Statistica-7). Results: the advantage of anthropometrical indicators of group № 2 over group № 1 was established: 8 sportsmen with a level of fitness up to 1 Kyu have on average a little higher height, more body weight, longer arms and legs than 13 athletes with a level of 1-2 Dan. Highly skilled Kyokushin karate athletes with 1-2 Dan level of training outperform athletes with up to 1 Kyu level of training in most SEBT positions. The dominating advantage on average group indicators of SEBT of sportsmen of Kyokushin karate with a level of preparation 1-2 Dan over sportsmen with a level of preparation not higher than 1 Kyu testifies to regularity, and not accident of the received results. Conclusions. On the basis of objectively received indicators of Star Excursion Balance Test and anthropometrical data, it is possible to conclude that sportsmen of Kyokushin karate with a level of fitness 1-2 Dan at smaller anthropometrical indicators (height, weight, length of arms and legs) show better indicators of SEBT, than sportsmen with a level of fitness up to 1 Kyu. The Star Excursion Balance Test indicators reflect the amplitude characteristics of athletes' movements along with dynamic balance and are related to the skill level of athletes. Keywords: Kyokushin karate, qualification, single combat, Star Excursion Balance Test, dynamic balance.
A retrospective case series of PENG block combined with femoral & lateral cutaneous nerves block as novel regional anesthesia approach for hemiarthroplasty & dynamic hip screw (DHS)
Authors: Mecharnia Redouane , Zabat Loubna , Hodni Laid , Abdulateef Dhari , Houda Talbi , Obadi Maeen , Muhamed Ayasa , Al lahham Salim , Aljassem Ghanem
Published: February 2024

Hip fracture is a frequent trauma particularly common in elderly patients, associated with a high risk of morbidity and mortality. The innervation of the hip joint is complex, and it is challenging for the anesthesiologists to provide effective anesthesia, even analgesia. The pericapsular PENG block is a promising block aiming to block articular sensory branches of anterior capsule supplied by femoral, obturator, and accessory obturator nerves. In this case series, The PENG block combined with femoral, and lateral femoral nerves block was successfully used as regional anesthesia technique with sedation for hemiarthroplasty and dynamic hip screw surgeries. The ultrasound-guided Novel regional anesthesia approach is described, and post-operative pain scores and opioid requirements are monitored till 48 h post-operative.
Ecocentric governance: sustainability between the availability of resources and needs
Authors: Carreón Guillén Javier , Marcos Bustos Aguayo José , Rubén Sandoval Vázquez Francisco , García Lirios Cruz
Published: February 2024

Within the framework of the Sustainable Development Goals, the conservation of resources such as electricity and water are the central axis of the public agenda. Public policies unfold between scarcity or abundance. Intermittent supply leads to savings in users. On the other hand, the permanent availability of electricity and water encourages greater consumption. In this sense, the objective of this study was to establish the governance structure, considering five phases: conflict, negotiation, consensus, self-regulation and co-responsibility. The orientation towards the conservation of resources for the benefit of future generations versus the consumption of current generations defines the type of government. This paper establishes the differences between anthropocentric governance and ecocentric governance with respect to the management of energy and water resources and services. An exploratory, cross-sectional and psychometric study was carried out with a non-probabilistic selection of 100 officials and users of the electricity and water service. The Carreón Governance Inventory (2022) was used, and the three preponderant factors were obtained: conflict, negotiation-consensus and self-regulation-co-responsibility. In relation to the literature consulted, the three factors refer to governance oriented towards resource conservation. The third factor of self-regulation and co-responsibility suggests policies oriented by the availability of energy and water resources. Empirical testing of the model in a scenario and a sample exposed to resource scarcity is recommended.
Implementation of preventive maintenance routines and the “zero breakdowns by base condition” methodology in an organization
Authors: Gomes Claudiney , Soares Jhonatan , Lucio Joventino , Ribeiro Leandro , Augusto Parreiras Gallegos Raphael , Gonçalves Rarisson
Published: February 2024

This work has the general objective of maximizing the availability and reliability of industrial equipment, reducing the frequency and severity of failures. To achieve this objective, two specific strategies will be implemented: preventive maintenance routines and the "Zero Breakdown by Base Condition" methodology. The implementation of preventive maintenance routines consists of establishing a systematic program of inspections, lubrication, adjustments and replacement of components before failures occur. This proactive approach allows you to identify and correct potential equipment problems, preventing them from becoming critical and causing unscheduled interruptions in production. The best maintenance intervals will be studied, taking into account the characteristics and requirements of each equipment, as well as the analysis of data from previous failures. In addition, the "Zero break by base condition" methodology will be implemented. This approach involves continuous monitoring of equipment conditions using data analysis techniques. The objective is to identify abnormal patterns of operation that may indicate the potential for imminent failure. Based on this information, maintenance can be scheduled appropriately and in advance, avoiding unexpected breakdowns. Various monitoring techniques will be explored, such as vibration analysis, thermography and oil analysis, to obtain a comprehensive view of the equipment condition. The study will be carried out in a specific industry, where data will be collected on the availability and reliability of equipment before and after implementing the proposed strategies. Statistical analyzes will be carried out to evaluate the effectiveness of preventive maintenance routines and the "Zero Breakdown by Base Condition" methodology in reducing failures and increasing equipment availability. It is expected that this work will contribute to the development of more efficient and reliable maintenance practices, promoting the improvement of production processes and reducing costs associated with failures and unscheduled stops. Maximizing equipment availability and reliability will have a direct impact on the efficiency and competitiveness of the industry under study.
Chemical-physical investigations of nine types of nasopharyngeal swabs for the PCR analyses
Authors: M Gatti Antonietta , Ristic Marko , Montanari Stefano
Published: February 2024

During the SARS-Cov-2 pandemic, a test of samples collected through naso/oropharyngeal swab was set up; for this aim new swabs were developed. Materials and methods: The laboratory New Nanodiagnostics srl (Modena - Italy) analyzed nine different types of swabs used to collect human organic material for PCR diagnostic test for the SARS-CoV-2 infection. The swabs were observed under Optical Microscope and analyzed by Field Emission Gun Environmental Scanning Electron Microscope (FEGE-SEM) coupled with an Energy Dispersive System (EDS), to verify their morphology and chemical composition. Three different morphologies and nanostructures, along with their chemical composition were identified. Surprisingly enough, the presence of identified chemical contaminants like Titanium-Silicon-Aluminum or Silicon- Aluminium-Chromium-Manganese does not be understandable nor is it explained in the data sheet. Some fibers also present a nanostructured coating of Silicon-Zirconium. This might be of concern, as their presence could invalidate the accuracy of the PCR testing. In addition to that, the biocompatibility of the medical devices is discussed since a particular tendency of the glassy fibers to break has been verified. The presence of broken fibers in the nasal and oropharyngeal mucosa can cause irreversible damages. Finally, after their use, the swabs must be incinerated and their fumes contribute to the increase of the environmental pollution.
Dissipative systems - the unity of material and quantum states of living matter
Authors: Orzhelskyi Igor , Kuznetsov Andrey , Van Dijk Elena
Published: February 2024

The functional information of dissipative systems in Living Matter correlates with both the physical and mathematical regularities defining its material and quantum operational levels. The quantum operational level of Living Matter necessitates employing mathematical models to describe spaces of high dimensions. The physical significance of such an approach helps ascertain the meaning of "action information" as the "quantum information" of dissipative systems. The quantum properties of dissipative systems determine the competitive balance between the metabolism and homeostasis of a living organism. The properties of "Quantum information" in dissipative systems exhibit general regularities and can be applied in examining the physical and mathematical principles governing "quantum computers" and materials synthesized based on "quantum dots."
An analysis from teaching interventions focused on levels of conceptualization
Authors: Cutrera Guillermo
Published: February 2024

In this article, the didactic interventions of a future physics teacher are analyzed during the joint construction, with the group of students, of school scientific explanations of everyday phenomena in a secondary education classroom. The work aims to contribute to an under-researched territory, related to how teachers guide the construction of explanations in science classrooms. A case study focused on qualitative methodology was used, using thematic content analysis. Transcripts, class diaries and working sessions between residents and teachers were analyzed. An initial category system was built that was expanded inductively. A typology of discursive strategies used by the future teacher was developed, which includes strategies to promote conceptualization at different levels of representation of matter and meta-explanatory strategies to explicate aspects of the structure of explanations.
Reasons of ball lightning levitation
Authors: Nikitin Anatoly I
Published: February 2024

Descriptions of observations of the movement of ball lightning down from the cloud and up to the cloud are given. Based on this, it was concluded that it has a positive charge. The case was considered when ball lightning resisted the action of the wind due to attraction to the cloud. Examples of ball lightning “hovering” at a certain height above the ground are described. To explain this, a hypothesis was proposed about formation in the space between ball lightning and the conductor a cloud of clusters having a charge of the same sign as the charge of ball lightning. This idea was tested experimentally. It is shown that the process of formation of a “cloud” of charges near ball lightning can be the reason for the existence of groups of ball lightning associated with each other. Examples of descriptions of ball lightning movement near a flying aircraft and inside its cabin are given. An explanation of these events is given.
THE EXISTENCE OF GREEN SUKUK AS A SUSTAINABLE ISLAMIC FINANCIAL INVESTMENT INSTRUMENT
Authors: Musthofa Khabib , Nafidzi Elman
Published: February 2024

AbstractThe purpose of this research is to see the role and urgency of green sukuk, in supporting sustainable Islamic finance. The heat of the issue of climate change and concern for environmental sustainability is currently a very serious conversation. The presence of green sukuk in addition to innovation in the investment sector in Islamic finance is also a form of support for sustainable development. This research applies a qualitative method with a literature study approach coupled with analysis, this research can be concluded that green sukuk has the potential to be further developed in Indonesia and green sukuk has a major role in realizing resilience to climate change as seen from the development of green projects such as drought management, flood mitigation, and food security.Keywords: Green Sukuk, Islamic Finance, Sustainability
Calidad del servicio: un estudio en hoteles con el modelo SERQVUAL
Authors: Eslava-Zapata Rolando Antonio , Chacón-Guerrero Edixon Javier , Mogrovejo-Andrade Johanna Milena , Valero-Valencia Alexander
Published: February 2024

El estudio tuvo como objetivo analizar la calidad del servicio que los hoteles de Cúcuta ofrecen a turistas. El estudio es de tipo cuantitativo, con un diseño transeccional exploratorio y descriptivo. Se trabajó con una muestra intencional no probabilística de cuatro hoteles tres estrellas de la ciudad de Cúcuta, Norte de Santander, Colombia. En este sentido, se aplicó el modelo SERVQUAL a fin de hallar las diferencias entre las percepciones y expectativas de los clientes en las dimensiones: tangibilidad, fiabilidad, responsabilidad, seguridad y empatía. Los resultados revelaron que la calidad del servicio es de suma importancia en la actualidad dado que en el mercado, los productos y servicios ofrecidos por los hoteles con características fiables son muy bien valorados por los clientes actuales y ayudan a captar nuevos clientes. Las cambiantes condiciones económicas, políticas y sociales, hace que las empresas hoteleras creen una cultura organizacional orientada al servicio, por lo tanto, tener una visión de calidad, es un factor clave para la prosperidad organizacional. Se comprobó la existencia de una pequeña brecha entre las expectativas y las percepciones de los clientes en cuanto a la calidad del servicio; sin embargo, queda en evidencia que las empresas hoteleras están satisfaciendo las necesidades de los clientes en los distintos servicio ofrecidos de cara fortalecer su fidelidad.
Estrés académico y clima organizacional en estudiantes universitarios de una universidad pública en Perú en pospandemia Covid-19
Authors: López-Armes Edy Luisa , Javier-Ninahuaman Henry Juan
Published: February 2024

Con la COVID 19 se ha evidenciado que los estudiantes universitarios se han visto afectados en el aspecto psicológico que a su vez fue reflejada en reacciones fisiológicas, emocionales, cognitivas y conductuales, ¿Tendrá el clima organizacional de la universidad importancia para estos aspectos?  El objetivo del presente trabajo de investigación, fue determinar la relación entre el estrés académico y el clima organizacional en los estudiantes de la Unidad Académica de Estudios Generales de una universidad pública en pospandemia COVID 19. Como metodología se empleó la investigación aplicada, nivel descriptivo, diseño correlacional, enfoque cuantitativo y, la técnica encuesta, además se propuso un modelo de interacción de variables por ecuaciones estructural SEM por análisis factorial exploratorio de los componentes. Se aplicaron los instrumentos Inventario de SISCO de estrés académico y clima organizacional en escala ordinal a una muestra de 1 427 estudiantes de una población de 1 500. Los resultados obtenidos indican que existe relación inversa débil y significativa entre estrés académico y clima organizacional en la muestra analizada (rho de Spearman =-0.13; sig= 5%), además que el afrontamiento y los síntomas (S) del estrés inciden en el diseño organizacional universitario (DO), y que DO influencia a la cultura organizacional (CUO) y el potencial humano (PH) del estudiante; los estresores afectan a PH, S y el clima organizacional.
Fast-activating reserve power sources: is lead dead indeed?
Authors: Shcheglov Pavel A. , Samsonov Dmitry A. , Pavlenkov Anatoly B. , Kulova Tatiana L. , Rychagov Alexey Yu. , Skundin Alexander M. , Postnova Evgeniya Yu.
Published: February 2024

The purpose of this research is to improve the performance and reduce the activation time of reserve power sources based on lead-acid systems at lower temperatures, down to –50 °C. Physico-chemical factors affecting the activation speed of reserve power sources based on Pb–HClO4–PbO2 and Zn–HClO4–PbO2 systems are investigated using chronopotentiometry, scanning electron microscopy, and standard contact porosimetry. Two approaches to the improvement of the low-temperature performance of power sources are used. The first one is based on the substitution of lead as anodic material with zinc. This allows the increase in discharge voltage and simultaneous decrease in activation time, but brings about the instability of discharge characteristics and, finally, deteriorates the reliability of power sources. The second approach is based on the use of PbO2 cathode material with enhanced nanoporosity. The chronopotentiometric method in galvanostatic mode is applied to the quality estimation of cathodes. The criterion of applicability of cathodes for reserve power sources consists in the low discharge overvoltage (0.1–0.2 V). Efficient performance of reserve power sources possessing the stable discharge voltage (1.5–1.8 V per cell) and the unprecedentedly short activation time (under 30 ms) even at lower temperatures (down to –50 °C) is achieved. The results are verified by fabrication and testing of pilot batches of miniaturized reserve power sources having microcells’ volume of 0.02 ml. The second approach to the improvement of power sources is transferred into the industrial production.
Development of A. solani β-tubulin models and comparison of docking results for benzo[d]azoles derivatives as potential antifungal agents
Authors: Obydennov Konstantin L. , Kalinina Tatiana A. , Glukhareva Tatiana V. , Bakulev Vasiliy A.
Published: February 2024

An approach to developing a docking protocol using free software such as KNIME, DataWarrior, AutoDock Vina, AutoDockTools, OpenBabel and the SWISS-MODEL service was described. In particular, the process of generating possible isomeric structures using KNIME chemoinformatics libraries is described. A library of benzo[d]azoles containing 145 compounds with homologous models of Alternaria solani β-tubulin obtained in two ways: using the commercial Prime program and the free SWISS-MODEL service, the comparison of results was shown. Despite the less preorganization of the binding cavity of the homologous model obtained using SWISS-MODEL, the correlation of the results between the two methods were observed. The correlation coefficients were as follows: Pearson was 0.65, Spearman was 0.62. According to the docking results, 99% of the studied 2-aminobenzo[d]azoles derivatives showed a docking score of no more than –7, which indicates that these compounds are promising for studying the fungicidal activity, in particular against A. solani. Without taking into account pharmacokinetic characteristics, benzo[d]imidazole derivatives containing a sulfanilamidine substituent at the 2-amino group and thioacetyl derivatives of 2-aminobenzo[d]imidazole are of particular interest in the search for new antitubulin fungicides.
The Ruthenium/TEMPO-Catalysed Aerobic Oxidation of Alcohols
Authors: Dijksman Arné , Arends Isabel W. C. E. , Sheldon Roger A.
Published: February 2024

The combination of RuCl2(PPh3)3 and 2,2′,6,6′-tetramethylpiperidine N-oxyl (TEMPO) affords an efficient catalytic system for the aerobic oxidation of a variety of primary and secondary alcohols, giving the corresponding aldehydes and ketones, in > 99 per cent selectivity in all cases. This interesting catalytic system is probably based on a hydridometal mechanism, involving a ‘RuH2(PPh3)3’-species as the active catalyst. TEMPO acts as a hydrogen transfer mediator and is regenerated by oxygen.
Improved Start-Up for the Ammonia Oxidation Reaction
Authors: Chernyshev V. I. , Zjuzin S. V.
Published: February 2024

The start-up operation in a nitric acid plant is one of the most important stages, from the viewpoint of safety and platinum loss, in the entire ammonia oxidation process. Usually, flame burners using hydrogen or hydrogen-containing gas preheat the platinum alloy gauze catalyst to the operating temperature. However, there are disadvantages and peculiarities in this method of initiating the start-up reaction. These are discussed here and a new electrical heating device and a new technique are described for preheating the platinum alloy gauze catalyst. The device and technique are free of these disadvantages, and together they reduce the explosive hazard and platinum losses during start-up. Results from their commercial utilisation over a 12-year period at various nitric acid plants are described.
The Discoverers of the Osmium Isotopes
Authors: Arblaster John W.
Published: February 2024

This is the third in a series of reviews of circumstances surrounding the discoveries of the isotopes of the six platinum group elements; it concerns the discovery of the thirty-four isotopes of osmium. The first review on platinum isotopes was published in this Journal in October 2000, and the second review on iridium isotopes was published in October 2003 .
The Use of Platinum Anodes in Organic Anodic Processes
Authors: Allen Milton J.
Published: February 2024

Electrochemical methods of preparing inorganic chemical products are well known, and the reactions taking place at anode and cathode are well understood. In the organic sphere an increasing interest is developing in electrolytic methods of preparation, but the processes are neither so widely used as yet, nor are the principles so well clarified. Dr. Allen, who is Director of the Physical Research Laboratories of CIBA, has devoted much energy and enthusiasm to studies in organic electrochemistry and he and his colleagues have devised a number of preparative methods for pharmaceutical products or intermediates based upon anodic oxidation and allied electrolytic processes. In this article he reviews the mechanism of these reactions and outlines some of the important syntheses capable of being effected with the aid of platinum anodes.
Platinum Alloy Permanent Magnets
Authors: Ford L. A.
Published: February 2024

Plalinax II, a cobalt-platinum alloy, is one of like most powerful permanent magnet materials knotvn. Because of its high performance, its principal applications are in miniaturised units where size and weight considerations are of the utmost importance, or where the geometry of the magnet excludes the use of other materials. It is readily fabricated and machined, enabling magnets of complex shape to be manufactured to close tolerances, and it will operate for long periods in highly corrosive environments. To obtain the maximum advantage from its use, it is necessary to design magnetic circuits carefully so as to exploit as fully as possible the magnetic characteristics of the alloy. Data are given in this article that will assist engineers to make the most effective use of Platinax II.
The Bonding of Adsorbed Species at Catalyst Surfaces
Authors: Bond G. C.
Published: February 2024

The nature of the bonds between catalyst surfaces and the adsorbed intermediates formed during catalytic reactions is still a matter for discussion. A recent symposium organised by the American Chemical Society was devoted to this subject, as well as a General Discussion of the Faraday Society held in Liverpool in April. Although many new techniques have become available and have been exploited during the past decade, they have only served to reveal a multiplicity of adsorbed states whose relevance to catalysis is uncertain, and there has been no corresponding advance in basic theory. The purpose of this article is to present a sketch of a possible new approach to the bonding of adsorbed species on metal surfaces.
The Platinum Metals in Fuel Cells
Authors: D. E. W.
Published: February 2024

The merits of the platinum metals as electrocatalysts in a large number of fuel cell systems featured in a high proportion of the papers presented at the Second International Conference on the Study of Fuel Cells, organised by the Société d’Etudes de Recherches et d’Applications pour l’Industrie (SERAI) and the Société Commerciale d’Applications Scientifiques (COMASCI) and held recently at the University of Brussels.
The Structure of Supported Platinum Catalysts
Authors: Moss R. L.
Published: February 2024

Modern techniques are steadily increasing our knowledge of the structure and properties of the supported platinum metal catalysts so widely used in chemical processing. The main function of the support, such as charcoal, alumina or silica, is to increase the surface area of the platinum metal and so to enhance catalyst performance, and methods for studying the dispersion of the platinum are therefore of considerable importance. This article describes the application of electron microscopy to the problem and compares the results given by this and other methods.
Fourth International Congress on Catalysis
Authors: G. C. B.
Published: February 2024

The Fourth International Congress on Catalysis took place in Moscow during the last week in June, and was followed by three specialised Symposia, two of which were also held in Moscow and one in Novosibirsk. This Congress provided, as did its predecessors, a useful forum for the exchange of ideas and experience: an impression of the Congress and a review of the papers relevant to the platinum metals is given in this article.
Platinum Recovery in Ammonia Oxidation Plants
Authors: Holzmann Hermann
Published: February 2024

This article describes a novel process for the recovery of platinum lost in ammonia oxidation plants for the manufacture of nitric acid. The process, based on the finding that the platinum lost is in vapour form, is particularly suitable for medium and high pressure plants in which the present methods of recovery are relatively inefficient.
One-dimensional Metallic Conductors
Authors: Underhill A. E.
Published: February 2024

Certain partially oxidised transition metal complexes possess structural and electronic properties which suggest that they are capable of development as one-dimensional metallic conductors. Studies of such platinum complexes have proved the most encouraging and may lead to the development of high temperature superconductors.
Continuous Platforming
Authors: Pollitzer E. L.
Published: February 2024

In the most recent innovation in catalytic reforming very small quantities of the platinum catalyst are continuously withdrawn, regenerated, and returned to the system. The operating economics of the continuous and stable production of gasoline and hydrogen offer great advantages in the achievement of maximum yield.
Noble Metal Catalysts on Metallic Substrates
Authors: Pratt A. S. , Cairns J. A.
Published: February 2024

The use of platinum group metal catalysts supported on ceramic monoliths for control of gaseous emissions from automobiles and chemical plant is now well established. Research in the Johnson Matthey Laboratories and at AERE Harwell, aimed at meeting the demand for more effective catalysts, has resulted in a new generation of platinum catalysts in which the ceramic substrate is replaced by a metal monolith. These metal substrate platinum catalysts are found to be more compact and more efficient than conventional ceramic structures. At the same time they overcome the structural limitations of ceramics with greater resistance to thermal shock and mechanical failure. The development of the metal substrate catalyst, and its use in hostile high temperature environments such as automobile emission control and catalytic combustion is described.
The Oxidation of Rhodium-Platinum
Authors: McCabe A. R. , Smith G. D. W.
Published: February 2024

The oxidation behaviour of platinum and its alloys at high temperatures is of fundamental importance to its application as both a structural material and a catalyst in a wide range of industrial processes. One of the principal factors determining the efficiency of a catalyst is its surface condition and this in turn depends upon both the initial surface preparation and the changes in surface structure and composition that take place during use. During the manufacture of nitric acid from ammonia a rhodium-platinum catalyst gauze is employed, and under the reaction conditions the surface of the catalyst is altered. The processes involved in this change are not yet fully known, but a study undertaken to provide a more detailed characterisation of the oxide layer formed upon the surface of rhodium-platinum is now reported and may have relevance both to its use as a catalyst in ammonia oxidation and as a structural material.
Experience in the United States with Automobile Emission Control
Authors: Walsh Michael P.
Published: February 2024

To mark the fifteenth anniversary of the passing of a series of Amendments to the Clean Air Act by the Congress of the United States of America, the author, who was formerly Deputy Assistant Administrator for Mobile Source Air Pollution Control at the U.S. Environmental Protection Agency, reviews the benefits resulting from that legislation.
High Pressure Ammonia Oxidation
Authors: Gough K. G. , Wibberley B. L.
Published: February 2024

The principles of the design and operation of a new variable high pressure, large diameter experimental ammonia oxidation test facility built by Johnson Matthey Metals Limited are described. The layout and arrangement of the plant are illustrated in some detail and examples of its use with platinum catalysts are given. The design of the plant is such that the operating conditions of any current, or likely future, commercial undertaking can be reproduced.
Alexander Abramovich Grinberg
Authors: Kukushkin Y. N.
Published: February 2024

This year marks the twentieth anniversary of the death of Academician A. A. Grinberg who, fifty years ago, founded a new field of science to study the chemistry of co-ordination compounds of the platinum metals at the Lensoviet Institute of Technology in Leningrad. His academic life was devoted to this subject and his many contributions continue to form a source of inspiration to his successors.
High Temperature Degradation of Nickel Based Alloys
Authors: Tatlock G. J. , Hurd T. J. , Punni J. S.
Published: February 2024

The addition of platinum to nickel-based alloys can have a profound effect on their oxidation and hot corrosion resistance. Improvements in gas turbine blade performance in aggressive environments are linked with the protective nature of surface oxides and coatings. However the precise role of platinum in promoting and maintaining this protection is still under active investigation and the results of several recent studies are reviewed here.
Cathodic Protection in the Arctic
Authors: I.E.C.
Published: February 2024

Corrosion of steel structures in Arctic waters can be even more severe than in warmer environments. It has now been reported that with careful attention to detail during all stages of design, fabrication, installation and operation, impressed current cathodic protection systems, incorporating platinised anodes, can provide an economic and effective means of preventing corrosion on both ships and off-shore structures.
Reactions of Complexes of Platinum Metals with Bio-Molecules
Authors: Sykes Professor A. G.
Published: February 2024

There is a growing recognition of the opportunities that may exist for inorganic biochemistry to contribute to the solution of practical problems that occur in many quite different areas, ranging from mineral extraction to medicine. While most traditional applications of the platinum metals depend upon their ability to remain largely unchanged in highly reactive environments, compounds of these metals can be quite reactive and do react with biological materials. This paper reviews the present position and indicates potential applications.
Improvements in Platinum Plating
Authors: Skinner P. E.
Published: February 2024

Platinum and platinum alloy films electrodeposited from conventional aqueous electrolytes find application for a wide range of uses. During deposition a variety of problems have to be overcome, necessitating optimisation of process conditions; in addition currently available platinum plating processes are not considered to be particularly efficient. The invention of a new series of aqueous platinum or platinum-alloy electroplating baths which permits thick and adherent deposits to be produced, and which are more efficient than other commercial plating solutions, is now reported. Some results of investigations made on test pieces and limited pre-commercial proving samples, are also given.
World Developments of Fuel Cells
Authors: Cameron D. S.
Published: February 2024

Writing in this Journal over a quarter of a century ago, the late Dr. L. B. Hunt suggested that a number of different types of fuel cell would be required in the future to meet the varied requirements of auxiliary power sources, communications, specialised military applications and vehicular propulsion, and that it would be further into the future before fuel cells would be used as a means of primary power generation. Since that time several papers and conference reports on this application of the platinum metals have been printed here, and a significant number of abstracts of work that has appeared elsewhere, have been published. An increasing awareness of the environmental costs resulting from the use of fossil fuels has reinforced efforts to use such fuels in more effective and less polluting ways. This review summarises the present situation world-wide regarding developments in fuel cell technology, current and proposed applications and commercialisation.
Metal-Hydrogen Systems and the Hydrogen Economy
Authors: F.A.L.
Published: February 2024

Continuing interest in metal-hydrogen systems and in the advancement of the so-called hydrogen economy, has been demonstrated by two recent meetings, each attended by participants from some thirty countries. The first was at Uppsala University, Sweden during June, and the second was held in Paris later that month. At both it was evident that considerable research work involving the platinum group metals is taking place throughout the world.
Highly Efficient Nanocrystalline Photovoltaic Devices
Authors: Grätzel Michal
Published: February 2024

A new molecular photovoltaic system for solar light harvesting and conversion to electricity has been developed. It is based on the spectral sensitisation of a nanocrystalline semiconductor film by transition metal complexes. The film consists of nanometre-sized colloidal titanium dioxide particles sintered together to allow for charge carrier transport. Ruthenium and osmium based sensitisers have so far achieved the best performance both from the efficiency as well as the stability point of view. Carboxylated polypyridyl complexes of these two metals give extraordinary efficiencies for the conversion of incident photons into electric current, exceeding 90 per cent within the wavelength range of their absorption band. The outstanding performance of cis-di(thiocyanato) bis(2,2'-bipyridyl-4-4'-dicarboxylate)ruthenium(II)is unmatched by any other known sensitiser. The present paper discusses the underlying physical principles of these astonishing findings.Exploiting this discovery, we have developed a low-cost photovoltaic cell whose overall light to electric energy conversion yield is 10 per cent under direct (AM1.5) solar irradiation. For the first time a deuice based on a simple molecular light absorber is attaining a conversion efficiency commensurate with that of silicon baed photovoltaic cells, but at a much lower cost.
Alfred Werner’s Research on the Platinum Metals
Authors: Kauffman George B.
Published: February 2024

Alfred Werner (1866–1919), the founder of co-ordination chemistry, was the first Swiss to receive a Nobel prize in chemistry and is best known for his research on complexes of cobalt. However, he also made many valuable contributions to the chemistry of the platinum group metals, some of which involved resolutions that established the configurations of their complexes.
KYRGYZ WOMEN'S POETRY IN CHINA: HISTORY OF DEVELOPMENT, IDEOLOGICAL AND ARTISTIC FEATURES
Authors:   Kyrgyz National University named after Jusup Balasagyn, Turdubaeva Nazgul
Published: February 2024

This article discusses the history of the development of women's poetry in the literature of the Kyrgyz people living in China, who also wrote at that time, focused on the ideological, artistic and thematic features of the poems created by our daughters. They came to Kyrgyz literature in the 80s, and from year to year they are joined by young poets led by the famous poet Gulaiy Matili, the article also aims to reveal in chronological order their contribution to the development of the poetic genre by reviewing their work. Of course, we were able to give an example of only a few lines of verse. At the same time, it is said that one of the eternal themes in the poetry of women poets is love, life, the love of women for men, but there are moments of disappointment when they cannot express it openly with the help of poetic lines.
RESULTS OF THE EARLY ELECTIONS OF THE DEPUTY OF THE JOGORKU KENESH OF THE KYRGYZ REPUBLIC IN THE LENINSKY SINGLE-MANDATE ELECTORAL DISTRICT NO. 26 DATED MAY 28, 2023
Authors:   Kyrgyz State University named after I. Arabayev, Abdyldaeva Nargiza
Published: February 2024

The new election model introduced into the electoral system of the Kyrgyz Republic in 2015 has brought satisfactory changes, but in general, along with the growth of confidence in the electoral system, corruption has also increased. Before the introduction of automatically reading ballot boxes, biometric passports and electronic voter lists into the electoral system, the subject of bribery was members of a state body, now the main subject is a voter (citizen). Bribery of voters is one of the most powerful factors affecting the freedom of speech of voters, and we have seen how significant its influence was in the elections of October 4, 2020 and May 28, 2023. Today it is necessary to continue the reform of the electoral system, as it is necessary to solve the issues of vote buying.
PROBLEMS OF IMPROVING THE STANDARD OF LIVING AND QUALITY OF LIFE OF HOUSEHOLDS IN THE KYRGYZ REPUBLIC
Authors:   Bishkek State University named after K. Karasaev, Dautov Yalkun
Published: February 2024

This article is devoted to the problems of improving the level and quality of life of households in the Kyrgyz Republic. The introduction describes the ultimate and main goal of national strategies of almost all countries. Several short definitions of the concepts of "standard of living" and "quality of life" are given. It is noted that these two concepts are not identical. Then there are several key points from the National Development Program of the Kyrgyz Republic until 2026, developed on the basis of the National Development Strategy of the Kyrgyz Republic until 2040. When working on this article, data from the Annual publication "Living standards of the population of the Kyrgyz Republic 2017 - 2021", developed and published by the National Statistical Committee of the Kyrgyz Republic (2022).
IMPROVING THE DIGITAL TRANSFORMATION IN THE SPHERE OF PUBLIC ADMINISTRATION AND ENSURING INFORMATION SECURITY
Authors:   National Television and Radio Broadcasting of the Kyrgyz Republic, Jumalieva Cholpon
Published: February 2024

This article discusses the process of digital transformation of public administration in the Kyrgyz Republic and the issue of ensuring information security in it, and also publishes the results of the monitoring. The object of the study was the dynamics of the development of digital management in the country. The subject of the study was the process of digital transformation in the public administration system of Kyrgyzstan, digitalization and public services. As a research methodology, comparative statistical methods were used based on the UN statistical report for 2022 of the National Statistical Committee of the Kyrgyz Republic. As a result, the author noted that the dynamics of the development of digital public administration in Kyrgyzstan has risen by several levels, but at the same time, it is necessary to resolve the issue of ensuring information security and cybersecurity. It has been studied that the digital transformation of public administration in Kyrgyzstan is aimed at improving the efficiency of public services, ensuring the availability of information, transparency and participation of citizens.
FRICTION AND WEAR PERFORMANCE OF AN ELECTROSPARK-DEPOSITED Ta COATING ON CrNi3MoVA ST
Authors: Wang Zijun , Zhu Guanglin , Lu Fengsheng , Zhang Lei , Wang Yuanchao , Zhao Shuang , Guo Cean , Zhang Jian
Published: February 2024

A Ta coating was prepared on a CrNi3MoVA steel substrate by means of electrospark deposition (ESD) and its friction and wear performance was investigated. The nanomechanical properties and friction coefficient were tested by employing a nanoindenter and a friction and wear testing machine, respectively. Moreover, the phase structure was obtained using X-ray diffraction (XRD), and the morphology and composition were analysed before and after friction utilizing scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results showed that the gradient Ta coating with nanocrystals is composed of -Ta and Fe-Ta intermetallics, and Ta2O5 and -Fe phases. The hardness of the Ta coating increased by 115 % compared to that of the CrNi3MoVA steel and its elasticity was reduced by 21 %. The friction coefficient of the Ta coating was reduced by 81 % compared to that of the CrNi3MoVA steel and its weight loss was reduced by 89 %. The wear mechanism of the Ta coating can be characterized as slight adherence, whilst that of the CrNi3MoVA steel includes severe adherence and fatigue.
Внутренние болезни «Оказание неотложной помощи в клинике внутренних болезней»: учебное пособие для студентов медицинских ВУЗов и врачей
Authors: Акимова А.В. , Веденская С.С. , Вишнева Е.М. , Вишнева К.А. , Гринев А.Г. , Жилина М.С. , Попов А.А. , Смоленская О.Г. , Силакова В.Н. , Сисевич И.С. , Хабибулина М.М. , Хусаинова Д.Ф. , Шамилов М.Д.
Published: February 2024

Издание адресовано врачам и студентам, осваивающим основную об- разовательную программу высшего образования 31.05.01 Лечебное дело. В современном мире, где человеческое здоровье находится под угро- зой из-за различных факторов, какими являются болезни, травмы, ава- рии и даже террористические акты, обеспечение быстрой и эффективной медицинской помощи становится вопросом первостепенной важности. Особенно хорошо в данном вопросе должны разбираться выпускники медицинских университетов, а также врачи с многолетним стажем, ведь эти люди играют решающую роль в спасении жизней и предоставлении первичной помощи в случаях чрезвычайных ситуаций. Успешный исход различных медицинских манипуляций может зависеть от оперативности и профессионализма, которые врач может проявить в чрезвычайной ситуа- ции. Оказание скорой помощи является одним из наиболее стрессовых и ответственных аспектов медицинской практики. В данном учебном по- собии освещены вопросы оказания неотложной медицинской помощи в самых распространенных жизнеугрожающих ситуациях в соответствии с актуальными клиническими рекомендациями. После каждого раздела предложен тестовый контроль для закрепления усвоения материала.
Actividad física y conducta sedentaria en estudiantes de primer ciclo de educación infantil.
Authors: Díaz Gema , Navarro-Rueda María Inés , Torres-Luque Gema
Published: February 2024

El objetivo de este trabajo fue: a) analizar el cumplimiento de las recomendaciones de actividad física y comportamiento sedentario en sujetos de primer ciclo de educación infantil, en relación al género, y; b) determinar las posibles diferencias en cuanto al comportamiento sedentario en horario escolar versus horario extraescolar.  Se seleccionaron 73 escolares de primer ciclo de Educación Infantil (2.12±0.46 años). Los participantes llevaron puesto durante 5 días consecutivos (lunes a viernes), un acelerómetro (Actigraph GT3X; Actigraph, Pensacola, FL, USA), que registró el nivel de actividad física moderada-vigorosa (AFMV) (min/día), el volumen de pasos, la conducta sedentaria (min/día) y el número de Bouts de conducta sedentaria (10, 20 y 30 min) de lunes a viernes; así como en Horario Escolar vs Horario Extraescolar. Los resultados indican un cumplimiento medio de las recomendaciones de AFMV (entorno al 50%), para estas edades, existiendo una tendencia a ser más alto en los chicos. Además, se observa una alta conducta sedentaria en los diferentes momentos evaluados, aunque destaca que la misma es significativamente menor en el Horario Escolar vs Horario Extraescolar. Este estudio puede contribuir a generar programas de intervención que contribuyan a un incremento de la AF y descender el tiempo en conducta sedentaria.
Monitorización de la actividad física a través de podómetros en el Programa SALUD 5-10
Authors: Ruiz-Díaz Alfonso , Romera-García Fernando , Sainz de Baranda Pilar
Published: February 2024

La obesidad infantil, producto entre otros factores de los hábitos sedentarios, se ha convertido en un problema de salud pública en los países desarrollados, afectando considerablemente a los escolares españoles. Por ello, las profundas y sólidas ventajas de un estilo de vida físicamente activo son reconocidas incluso para los niños y adolescentes. El Programa SALUD 5-10, es un programa que ha sido diseñado con el objetivo de abordar el sobrepeso y la obesidad en escolares de una franja de edad entre 5 a 10 años. El objetivo de este trabajo es analizar el número de pasos que realizan los escolares en las sesiones del Programa SALUD 5-10 y comprobar que parte de las recomendaciones actuales de actividad física se cumplen en base al número de pasos al día. Se seleccionaron 21 niños/as entre 5 y 10 años. Como criterios de inclusión se estableció participar en un 75% o más de las sesiones. La frecuencia semanal fue de 2 sesiones, con una duración de la sesión de 90 minutos. Para la cuantificación de los niveles de actividad física se utilizó un podómetro “ONstep 100” por escolar. Los resultados indican una media de 6.710,52 pasos por sesión, lo que representa el 61% del número de pasos si se tiene en cuenta el límite inferior de la recomendación (11.000 pasos/días) y el 40,67% si se tiene en cuenta el límite superior de la recomendación (16.500 pasos/días).