bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Platinum Metals Refinery
Authors: Reavill L. R. P.
Published: February 2024

Following extensive testing and evaluation in a pilot plant, a large commercial pre-production noble metals refinery utilising a recently developed solvent extraction process has been constructed and is currently undergoing commissioning trials. Built with due regard to the needs of the users of the platinum metals, to the health and safety of the operators and to the protection of the environment, the capacity of the new refinery indicates confidence in the long term demand for the platinum metals.
Platinum and Early Photography
Authors: Cottington Ian E.
Published: February 2024

The stability of platinum was well known, and the light sensitivity of some of its salts had been studied, long before a practical photographic process was available. Early photographic prints based upon silver salts lacked permanence, however, so alternatives were sought and eventually a much improved process using platinum was evolved. These platinotype prints became very popular around the turn of this century but the non-availability of platinum for this application during the First World War resulted in the virtual disappearance of the process from commercial photography. This article considers some of the work and just a few of the many people who contributed to the success of the platinum printing process which, fortunately, is still practised by a small number of creative enthusiasts.
Symposium on Hydrogen in Metals
Authors: Sermon Paul A.
Published: February 2024

Over one hundred and fifty participants met at The Queen’s University of Belfast, Northern Ireland, on March 26th to 29th of this year to attend an international conference sponsored by the Institute of Physics, the Society of Chemical Industry, the Royal Society of Chemistry, the Bunsengesellschaft für Physikalische Chemie, the International Association for Hydrogen Energy, and the International Union of Pure and Applied Chemistry, to consider metal hydrides. Some of the papers concerned the platinum metals.
The Corrosion Behaviour of Objects Electroplated with Platinum
Authors: Baumgärtner M. , Raub Ch. J.
Published: February 2024

If base metals are thinly coated with platinum from an aqueous electrolyte the deposit is likely to be porous, thus enhancing the susceptibility of the substrate metal to corrosion and the surface to discolouration in certain environments. This paper considers the processes involved and shows that the application of a suitable intermediate layer can effectively prevent this, so enabling the inherent properties of platinum to be utilised for a greater number of functional and decorative applications.
Automobile Exhaust Emissions Control
Authors: Searles R. A.
Published: February 2024

Catalyst technology based upon platinum metals supported on a ceramic or metal substrate has been tried, tested and approved in the United States of America and in Japan for the control of carbon monoxide, unburnt hydrocarbons and oxides of nitrogen from vehicles. Australia is shortly to require a reduction in noxious emissions from this source, while in Europe a growing awareness of the detrimental effects of pollutants upon the environment has now led to a decision to introduce emission control standards. Over the past decade the motor industry has been supplied by Johnson Matthey with many millions of autocatalysts; now their accumulated expertise and manufacturing capacity will be available to meet the European demand, whether it be for advanced three-way catalysts, using platinum and rhodium, or for platinum + palladium oxidation catalysts to support anticipated developments in lean-burn engine technology.
Miniaturised Impressed Current Corrosion Protection Systems
Authors: Baboian Robert
Published: February 2024

The development of platinum coated refractory metal anodes for impressed current corrosion protection will be recorded in the history of technology as an event of extreme importance. The progress recently made in electronics technology has enabled further new developments in corrosion protection, leading now to miniaturised systems.
Copper and Nickel Alloys Clad with Platinum and Its Alloys
Authors: Ott D. , Raub Ch. J.
Published: February 2024

Cladding base metals with platinum or platinum alloys offers certain technical and economic advantages. In an earlier paper the mechanical properties of the metals to be joined were discussed. In this second paper it is shown that interdiffusion of the two materials being joined together must be considered, and that if the partners have different diffusion coefficients difficulties can result during later production stages. This is especially true if voids form in the diffusion zone due to the Kirkendall effect. This effect is particularly pronounced when copper alloys are used as the base metal, however it can be avoided either by using nickel-rich alloys or by incorporating an electrodeposited intermediate nickel layer of suitable thickness.
Platinum and Palladium in Astronomy and Navigation
Authors: Chaldecott John A.
Published: February 2024

Astronomy and navigation depend to a large extent on the ability to measure angular displacements with a high degree of accuracy, and since early times instrument makers have sought to improve the usefulness of their products by innovation. Shortly after ingots of malleable platinum and palladium became available commercially in England it was realised that these new metals had properties which were superior to those of silver, upon which the scales used for measuring angles were then engraved. The use made of platinum and palladium by one London firm of instrument makers in the first half of the nineteenth century is considered here.
Catalysed Reduction of Water by Ketyl Radicals
Authors: Harriman Anthony
Published: February 2024

Ultraviolet irradiation of a wide variety of ketones in aqueous solution containing a low concentration of an alcohol results in the formation of the two corresponding ketyl radicals, which are strong reducing agents. In the presence of colloidal platinum particles, these radicals will reduce water to hydrogen gas with high overall quantum efficiency. This is a general reaction, able to operate in sunlight, for which the mechanism is discussed in detail. The importance of the colloidal catalyst is stressed and, by changing the catalyst, different reaction products are obtainable.
The Use of Platinum Metal Complexes in Asymmetric Catalysis
Authors: Brown John M.
Published: February 2024

Since the original demonstrations of homogeneous organometallic catalysis under mild conditions in the 1960s there has been much progress. A central focus for development has been asymmetric synthesis, through the use of optically active ligands. Chiral chelating biphosphines have played a key role in these advances, which have led to: asymmetric hydrogenation as a route to amino-acids and Vitamin E precursors, kinetic resolution in directed hydrogenation, asymmetric isomerisation of olefins in a route to citronellol, and asymmetric catalytic C-C bond formation. This review highlights recent developments.
Merchandising Malleable Platinum
Authors: Usselman M. C.
Published: February 2024

In the year 1800 Tennant and Wollaston agreed to share the expenses of a joint chemical enterprise, the most profitable aspect of which was to become the production and sale of malleable platinum. It is generally known that Wollaston was responsible for the chemical and metallurgical innovations which yielded a reliable process for the production of the metal. Although the role of Tennant was crucial in the establishment of the partnership, his well-known inability to bring projects to a successful conclusion created strain in the partnership, and his practical contributions amounted to little. Thus Wollaston fully deserves the credit given to him for the production of malleable platinum.
Platinum in High Temperature Superconductor Technology
Authors: Maher E. F.
Published: February 2024

High temperature superconducting oxides are being subjected to intensive investigation, designed to establish the basic mechanisms governing their superconductivity and to enable their electrical and mechanical properties to be optimised and commercial applications developed. Chemical composition, crystallography, microstructure and the concentration of point defects are all factors that have a crucial bearing on superconductivity. Progress in fabrication and thermal processing would elevate these high temperature superconducting oxides from laboratory curiosities to a position where widespread commercial use could be envisaged. Much has already been published on the use of the platinum group metals with the new superconductors. This article has been compiled from a search of the literature and indicates some of the applications that are, or could be, of commercial significance.
Homogeneous Palladium(II) Mediated Oxidation of Methane
Authors: Sen Ayusman
Published: February 2024

A metal catalysed, electrophilic approach to methane oxidation is discussed. This involves the oxidation of methane to the corresponding methyl ester in trifluoroacetic acid; the oxidant is hydrogen peroxide and the catalyst is the palladium(II) ion. The latter species activates methane by the electrophilic cleavage of a C-H bond, and then acts as a two-electron oxidant towards the resultant metal-bound methyl group. The hydrogen peroxide reoxidises palladium(0) back to palladium(II)
Early Studies of Platinum in Spain
Authors: García R. Moreno
Published: February 2024

A critical study is presented here of the contribution made by Joseph Louis Proust, Professor of Chemistry and Metallurgy at the Royal Artillery School in Segovia, to the early investigation of platinum. His researches were carried out in Spain, mainly at the Segovian House of Chemistry during the latter years of the eighteenth century, and at the platinum laboratory in Madrid in the early years of the nineteenth century. These investigations resulted in three papers about the metal; one of them is almost unknown, but it gives a procedure which he had established for the possible purification of platinum. In the other two, Proust incorrectly interpreted the results of his experimental work, but he showed a systematic approach to his scientific investigations and paid great attention to detail, being the only investigator of platinum in Spain at that time to do so.
Catalytic Destruction of Halogenated Volatile Organic Compounds
Authors: Windawi H. , Wyatt M.
Published: February 2024

Halogenated volatile organic compounds are associated with a broad range of industrial processes, but when discharged into the atmosphere they constitute a major source of air pollution. Recognition of the potentially damaging effects that these emissions can have on the environment is leading to increasing demands for their control. Catalytic combustion appears to offer advantages over thermal destruction, resulting from lower incineration temperatures and higher destructive efficiencies. While platinum metals catalyst systems are known to be the most effective for the catalytic destruction of non-halogenated volatile organic compounds, only a relatively small amount of data has been published on their performance for destroying halogenated volatile organic compounds; this paper reports on an investigation of catalysts developed for this purpose.
Second European Congress on Catalysis
Authors: Bond G. C.
Published: February 2024

The second European Congress on Catalysis (EUROPACAT-II) was held in the MECC Centre, Maastricht, The Netherlands, from 3rd to 8th September, 1995, and was attended by more than 750 participants. There were 13 separate symposia, covering all aspects of catalysis, with three running simultaneously Two poster sessions contained a large number of presentations. This report covers aspects of the work presented featuring the platinum group metals.
Chiral Complexes of Platinum Metals
Authors: von Zelewsky A.
Published: February 2024

Molecular isomerism has been known about for well over 100 years and forms a very important part of organic chemistry. It was one of the phenomena from which the Alsatian chemist, Alfred Werner, working, often with platinum group metals, at the University of Zürich, Switzerland (Nobel Prize for Chemistry 1918) derived his ‘theory of co-ordination’in 1893 (1). However, more recently there has been a vast increase in the amount of work done on isomerism of co-ordination compounds, especially concerning chiral structures (2). The present paper describes some new developments on platinum metals complexes with chiral ligands derived from terpenes, where for the first time the chirality at metal centres can be controlled in a large number of compounds.
EFFECT OF Sc ON THE HYDROGEN-STORAGE PERFORMANCE OF Mg2Ni: A FIRST-PRINCIPLES STUDY
Authors: Zhu Guosong , Du Xiaoming , Li Fu
Published: February 2024

The effect of metal scandium (Sc) on the hydrogen-storage properties of the magnesium-nickel (Mg2Ni) alloy has been explored using the ultrasoft pseudopotential approach, rooted in the principles of Density Functional Theory (DFT). The binding energy, lattice constant, enthalpy of formation, standard enthalpy of reaction, charge density, density of states and bond order for the Mg2-xScxNi (x = 0, 0.25, 0.5, 1) alloys and their hydrides were calculated. Furthermore, the analysis of the atomic bonding and the structural stability of Mg2-xScxNi and hydrides were also facilitated. The results show that the preference site of the Sc atom in Mg2-xScxNi (x = 0, 0.25, 0.5, 1) alloys is Mg (6i) under the condition of a Sc doping concentration of 0.25. This causes a decrease in the stability of the Mg1.75Sc0.25Ni alloy. Moreover, the addition of Sc to Mg2-xScxNiH4 weakens the interaction of H-Ni and H-Mg, thereby facilitating the hydrogen-release reaction and effectively enhancing the hydrogen-release capability of Mg2-xScxNiH4.
HuBMAP | VU TMC Kidney | Human Kidney Processing v1
Authors: Isberg Olof , not provided haichun.yang , Allen Jamie , Farrow Melissa , not provided Audramjudd , Harris Ray , Spraggins Jeff
Published: February 2024

This protocol describes the workflow for collecting human kidney samples for multimodal downstream assays, in use by the Vanderbilt University HuBMAP Tissue Mapping Center.
Staining protocol for Imaging Mass Cytometry v1
Authors: R Kakade Vijayakumar
Published: February 2024

In Imaging Mass Cytometry (IMC), a high-resolution laser is combined with a mass cytometer that permits mass spectrometry-based, spatially reserved high-dimensional analysis of intact formalin-fixed paraffin-embedded (FFPE) tissues. The protocol summarizes the staining procedure for IMC using a cocktail of heavy metal conjugated primary antibodies identifying specific antigens.
Programa SALUD 5-10: Programa para el tratamiento del sobrepeso y la obesidad en niños de 5 a 10 años: Antecedentes, Diseño y Metodología
Authors: Sainz de Baranda Pilar , Visiedo Andrea , Ruiz-Díaz Alfonso , Romera-García Fernando , Cejudo Antonio , Sánchez-Jiménez Regina , Velázquez Francisca , Martínez-González Luz , Saura Elena , Ballester Raúl , Pérez-Llamas Francisca , Ruiz-Merino Guadalupe , Zamora Salvador , Madrid Juan , Berna-Serna Juan de Dios
Published: February 2024

La obesidad es una enfermedad especialmente cara y costosa en términos económicos y sociales tanto para las personas que la padecen como para las instituciones públicas sanitarias. Por ello, en las últimas décadas distintas organizaciones internacionales y nacionales han mostrado una enorme preocupación por sus implicaciones, pasando a ser tratado como un verdadero problema social. Según la Organización Mundial de la Salud, España es uno de los países de la Unión Europea con mayor prevalencia de sobrepeso infantil, ya que registra un 33% en la población entre 5 y 17 años, mientras que en Europa uno de cada cuatro niños tiene sobrepeso o es obeso. Además, España es uno de los países donde más ha crecido esta enfermedad (en la década de los ochenta la prevalencia era de un 15%). Diversas revisiones sistemáticas que evalúan la efectividad de los programas de intervención basados en el aumento de la actividad física y el control dietético sobre el sobrepeso y/u obesidad en población infantil y adolescente resaltan la necesidad de diseñar programas específicos para los escolares, así como valorar objetivamente la eficacia de dichos programas a largo plazo en niños y adolescentes con sobrepeso u obesidad. El objetivo del presente trabajo es describir el diseño y metodología utilizada en el Programa SALUD 5-10, 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.
What does my healthcare provider know about caring for me with my service dog?
Authors: Singleton Joanne
Published: February 2024

Background Caring for individuals teamed with service dogs requires complex practice knowledge intertwined with knowledge of legal protections and institutional policy. While healthcare professionals report not feeling fully prepared to care for this population, little is known about the care experiences from individuals teamed with a service dog. Purpose This study examined characteristics of individuals teamed with service dogs and their perspectives of what their healthcare providers know about caring for them. Method Cross-sectional analysis of survey data representing N = 204 individuals teamed with service dogs in the United States. Survey questions included demographic characteristics and measures of healthcare provider knowledge in the care of service dog teams. Discussion Less than 50% of respondents strongly agreed that their healthcare providers saw them as an expert in being supported by a service dog and communicated with them on meeting their needs. Between 56% to 65% strongly agreed to healthcare providers having knowledge of additional aspects of communication and interaction, awareness of legal rights for service dogs, organizational policies on service dogs, and acting as their advocate.
Gamification as an innovative tool in classroom teaching: Does it enhance learning outcomes and student participation in nursing?
Authors: John Bindu , Thomas Rintu
Published: February 2024

Gamification has been introduced in the nursing curriculum as one of the newest and most innovative teaching methods by blending the games with the concepts. In this method, they are applying the game elements in a non-game environment. Evidence cited in the empirical research shows that it increases students' class engagement, motivation, problem-solving ability, and competencies to a large extent. However, not many research studies have been conducted exploring the impact of gamification on the teaching and learning of nursing subjects.

1) Identify the application of gamification as an innovative teaching-learning strategy in nursing curriculum 2) Explore the student satisfaction, motivation, and class engagement while using gamification as a learning method 3) Impact of gamification on the academic performance of nursing students.

A literature search was conducted using online databases available in Google Scholar, PubMed, Medline, Science Direct, and ProQuest. The studies included were descriptive surveys, systematic reviews, quasi-experimental, and mixed research methods. The key search concepts explored were ‘Gamification and nursing education’, ‘gamified as a learning tool in nursing education’, ‘gamification and academic outcomes of nursing students', and 'gamification as a teaching strategy in nursing education'.

The available evidence from the research studies indicates positive results in using gamification can be a used as a learning strategy and shows that it can bring about increased class engagement, clarification and understanding of difficult concepts, and improve interaction and communication in nursing courses. However, challenges remain in terms of lack of clarity on the competencies to be examined the learning outcomes and the efficacy of its application in the professional field, and the underlying costs.

Gamification can be introduced as an innovative technology in the teaching-learning process. Further studies are required to provide more evidence in its application to various nursing courses and the learning outcomes to be examined.
Enhancement of quality in students and teachers through improved curriculum and faculty development programmes based on ancient Indian teachings and yogic lifestyle
Authors: Bhavanani Ananda Balayogi , Nilachal Padmashanti
Published: February 2024

: Quality improvement and development are crucial for the growth of teachers and students. Despite advancements in technology and resources, human life is becoming increasingly unhappy, with a lack of meaningfulness and a focus on money and luxury. The quality of life is declining, and while the number of educated people is increasing, there is a lack of understanding of the application of human values in modern education. Integrating education with human values is necessary to uncover the divine potential of a quality life. Ancient Indian teachings have the potential to bridge gaps in the modern educational system, and incorporating human values and yogic lifestyles is essential for a brighter future for upcoming generations.

: The method used is the evaluation of the practices and teachings mentioned in various ancient and recent texts.

: Indian traditional wisdom places a strong emphasis on moral principles and human values that still hold true today. They provide special attention to the higher goals of life, such "moksha," and impart a variety of life skills to teachers as well as students. Students learn about lifestyle management, study management, relationship management, communication skills, character building, personality grooming, and self-excellence. To be a quality teacher, one must possess creative excellence, leadership, team building, and spiritual excellence. These principles support people's development on all levels of their lives, not only in the workplace.

: The Ancient Indian teachings are a wonderful source of motivation for strengthening the quality of both teachers and students. These teachings may help both students and teachers in their holistic development.
Impromptu yet effective conduct of Jigsaw to teach a topic in biochemistry for first MBBS students
Authors: Agrawal Poonam , Devi Pooja , Jamatia Elvia
Published: February 2024

Jigsaw technique as a teaching modalities is an important and fascinating mode of teaching students a particular topic in an effective and interesting manner. Though the effectiveness of Jigsaw implementation is documented by many researchers, not only for medical science subjects but also for various topics in chemistry, engineering and nursing courses, it’s application and feasibility is often being questioned. Many researchers find the implementation of Jigsaw a daunting task, which requires a lot of time, planning and number of resource person.

This article emphasises upon feasibility of Jigsaw implementation and its effectiveness in spite of all odds like limitation of resource faculty, time, space etc.

In this study Jigsaw planning was done impromptu for revision of the topic “Enzyme” for students of biochemistry in first MBBS.

49 out of total 62 students of batch A reported for tutorial session. They were divided into 6 experts groups[EG1-EG6]. Each EG was given one sub topic out of above. They were instructed to discuss it among their peers in EG. Later one student from each EG was mobilised to create home group[HG].

Total 8 HG were thus created and the students were asked to discuss their subtopic in HG in sequential manner; which means first of all student from EG-1 discusses the sub topic to rest of the members of his/her own HG, next the student from EG 2 explains the sub topic to rest of the members of his/her own HG. This fashion all the sub topics were sequentially discussed in all the HG parallelly and the whole topic of enzyme was discussed in each HG in peer assisted learning fashion. Students were later asked to write reflection on this activity.

Same activity was repeated for batch B students.

During analysis of reflection it was found that this exercise was appreciated by majority of students, and they perceived this activity as an interesting and effective modality of teaching learning. They even wanted repetition of Jigsaw activity in future for various other topics.

It is concluded that in-spite of limitation of time and limited faculty backup, Jigsaw can be effectively implemented for benefit of students in a short notice.
Marketing Analysis of Big Chilli in Sembalun District, East Lombok District
Authors: Jannata  , Suparmin  , Usman Abdullah
Published: February 2024

The aim of this research is to analyze the structure, behavior and performance of the large chili market in Sembalun District, East Lombok Regency. With 80 farmer respondents and 37 marketing institutions consisting of 17 collectors, 8 wholesalers and 12 retailers. The data sources used are primary data and secondary data. The method used in this research is snowball sampling. The research results show that the large chili market structure in Sembalun District is classified as a monopolistic competition market structure. The market behavior of the large chili buying and selling process in Sembalun sub-district forms six types of marketing channels involving five marketing institutions. The longest channel is the first channel, namely from Farmers - Village Level Collectors - District Level Collectors - Retailers and then Consumers. Prices for large chili commodities tend to be determined by traders. The most efficient performance of the large chili market in Sembalun District, seen from the indicators of marketing margin, farmer share and profit to cost ratio, is the VI marketing channel, namely farmers directly to consumers.
Earthquake Risk Analysis for Disaster Management and Mitigation in Central Lombok
Authors: Lalu Ahmad Murdhani  , Erfan Wahyudi  , Mujahidin
Published: February 2024

This research focuses on analyzing the risk of earthquake disasters in Central Lombok Regency for disaster management and mitigation purposes that can be implemented in the future. This disaster risk analysis has been prepared using a methodology adapted to the Regulation of the Head of the National Disaster Management Agency Number 02 of 2012 concerning General Guidelines for Disaster Risk Analysis, as well as referring to other guidelines applicable at national level ministries/institutions. Central Lombok Regency faces significant risks related to earthquakes, especially in the coastal, southern and central areas. The risk index value is obtained from data analysis related to the hazard, vulnerability and capacity components for each potential disaster grouped into 3 (three) levels/classes, namely 0-0.333 for low class, > 0.333-0.666 for medium class, and >0.666-1 for high class. The index values are different for each disaster, except for the regional capacity index which applies the same to all regions. The Central Lombok Regency disaster risk assessment was carried out at the village/sub-district level. Detailed results of the analysis of each disaster risk assessment index for all potential disasters in Central Lombok Regency are described for each component determining disaster risk assessment. The results of this research show that the highest risk of earthquake disasters is in East Praya at 31%, then the moderate disaster risk is in the Jonggat and Pringgarata areas at 65%, and the low risk is in the North Batuliang area at 68%.
The influence of the use of the mnemonic method for memorizing the bones of the carpal tunnel by the medical student
Authors: EL Marbouh Abdellah , Daimi M. , Ammari M. , Hammani T. , Tendart V. , Mounguengui H. , Khalfaoui S
Published: February 2024

Anatomy is considered the cornerstone of medical education; Anatomical knowledge is essential for doctors regardless of their specialty. Many articles have compared anatomy teaching methods.This study was designed to evaluate the usefulness of a simple mnemonic method for memorizing the carpal tunnel bones.Twenty-six physiotherapy students, 3rd year trainees in the rehabilitation and functional rehabilitation department, were included in this study,when A majority of students (63.7%) said they were satisfied with the mnemonic method .The influence of using mnemonic method for memorizing the anatomical region studied before or after the course positively influences the students' understanding of anatomy.Based on our experience and student feedback, we strongly advocate the use of the mnemonic method for memorization as a course adjacent in anatomy teaching
Remoção dos corantes alaranjado de metila e verde de bromocresol de soluções aquosas por meio da adsorção em carvão ativado
Authors: Silva Kessi Jhony de Araújo , Souza Layanny Samara da Silva , Moura Karine Oliveira
Published: February 2024

O presente estudo descreve o processo de adsorção dos corantes sintéticos alaranjado de metila (AM) e verde de bromocresol (VB) em meio aquoso, utilizando o carvão ativado (CA) como material adsorvente. Diferentes parâmetros foram avaliados, tais como tempo de contato, dosagem do adsorvente e concentração inicial do adsorbato. A cinética de adsorção foi avaliada empregando os modelos de pseudo-primeira ordem e pseudo-segunda ordem, tendo os dados cinéticos melhor se ajustado ao primeiro modelo para VB e ao segundo modelo para AM. O tempo de equilíbrio de adsorção foi alcançado em 1850 e 1440 min para AM e VB, respectivamente, sendo suas capacidades máximas de adsorção (Qt) de 2,98 e 2,46 mg g-1, dentro das condições estudadas. Os resultados demonstraram que a remoção dos corantes AM e VB em meio aquoso empregando o CA é favorável, uma vez que este material apresentou taxas de adsorção máximas de 95% para AM e 75% para VB.
Effect of the addition of different concentrations of particulate reinforcement on the density, hardness and wear resistance of aluminum composites produced by powder metallurgy
Authors: Silva Igor Carvalho da , Dias Abraão Pereira , Galárraga Edison Gustavo Cueva , Lima Emmanuel Pacheco Rocha
Published: February 2024

The objective of this work is to evaluate the influence of the addition of different concentrations of particulate reinforcement in the production of commercially pure aluminum composites reinforced with blast-furnace slag via powder metallurgy. The processing of these materials was done by sieving, mixing and compacting powders of reinforced aluminum with 5, 10 and 15% of blast-furnace slag. The cold uniaxial compaction was realized at a pressure of 430 MPa. The obtained materials were sintered at 610°C for 2h under inert atmosphere. Unreinforced aluminum samples were also produced. The characterization of the materials was realized by density and microhardness measurements and wear tests. The morphological analysis was realized by scanning electron microscopy. As results, the materials had a relative density greater than 93,8%, reaching 98,6% for pure aluminum. The composites showed a homogeneous distribution of reinforcement particles and progressive improvement in microhardness with increasing slag concentration. However, regarding wear resistance, the result was the opposite. This result suggests that the reinforcing particles, being made of ceramic material, may have worked as an abrasive when released from the aluminum matrix, since commercially pure aluminum is extremely malleable and cannot hold the slag particles.
Spremembe rabe tal na območju občine Juršinci
Authors: Žiberna Igor , Meško Matej
Published: February 2024

V članku smo analizirali spremembe rabe tal v občini Juršinci. V prvem delu članka obravnavamo spremembe rabe tal v odvisnosti od nekaterih naravnogeografskih značilnosti v obdobju 2000- 2021. Obravnavali smo tudi najpogostejše smeri sprememb rabe tal. V drugem delu članka obravnavamo spremembe vinogradniških površin. V okviru tega smo primerjali razširjenost vinogradniških površin leta 1824 s sedanjim stanjem. Analizirali smo tudi izkoriščenost kakovostnih vinogradniških leg nekoč in danes
Can Culture Stimulate Innovation for Technopreneurship? A Grounded Theory Method
Authors: Nassar Jamal , Mohd Sori Zulkarnain
Published: February 2024

Among factors influencing and shaping innovation in different societies is the prevailing culture. Most forms of individualistic cultures affect innovation significantly and positively. key factors that influence innovation among early-stage startups are government interventions, innovation policy and financing. This study has three key objectives. The first is to examine how culture influences innovation among technology startups in Malaysia. The second objective is to explore factors associated with technology innovation. The third objective is to assess how innovation influence financing for technology startups. The study employs grounded theory as the main methodological approach to analyze primary data. A qualitative survey carried out a series of semi-structured interviews with technology entrepreneurs[1], relevant government agencies, industry associations, venture capitalists and leading accelerators. The study finds that culture can be an impediment to innovation. Factors such as collective culture and herd mentality behavior were identified as barriers to innovation and fear of failure was attributed to low entrepreneurial innovation. Entrepreneurial attitude, on the other hand, was identified as a significant quality that is positively related to innovation among technology startups. Data analysis reveals that technopreneurs who display a positive attitude, determination, perseverance and self-efficacy are more likely to display some form of innovation in their startup. These technopreneurs were more likely to be financed by venture capital funds and private or angel investors. Other factors that influence innovation are, the capacity to commercialize, overall entrepreneurship culture, incubators facilities and capabilities and market size. Based on the findings, the study offers a proposed framework that encapsulates elements, factors and components that affect innovation.
PTSD symptoms after the delivery in women who delivered alone or accompanied by their partners
Authors: Bielawska-Batorowicz Eleonora , Szembek Klaudia
Published: February 2024

Poród jest przez rosnącą liczbę badaczy traktowany jako doświadczenie traumatyczne. Najważniejszym elementem koncepcji porodu jako wydarzenia traumatycznego jest poczucie kontroli nad przebiegiem wydarzeń i związane z nimi reakcje emocjonalne występujące u kobiet. Towarzyszący rodzącej partner jest źródłem emocjonalnego i praktycznego wsparcia, a jego obecność może zmienić sposób, w jaki kobieta spostrzega poród i swoją nad nim kontrolę, a tym samym zmniejszyć ryzyko pojawienia się po porodzie objawów przypominających objawy zaburzenia po stresie traumatycznym (PTSD). W badaniu uczestniczyło 70 kobiet, z których połowa rodziła w towarzystwie partnera. Zastosowano Kwestionariusz objawów uwzględniających 3 grupy objawów typowych dla PTSD (unikanie sytuacji przypominających o urazie, pobudzenie, odtwarzanie stresującej sytuacji), a także Inwentarz radzenia sobie w sytuacjach stresowych (CISS) do pomiaru stylu radzenia sobie. Kobiety rodzące samotnie uzyskiwały istotnie wyższe wyniki w zakresie unikania i pobudzenia. Ich ogólny wynik w Kwestionariuszu objawów był również istotnie wyższy. Natężenie objawów PTSD było związane ze stylem radzenia sobie ze stresem – badane ujawniające styl skoncentrowany na zadaniu uzyskiwały niższe wyniki w Kwestionariuszu objawów, co świadczy o mniej intensywnych objawach. Wyniki wskazują˛ również, że ani uczestniczenie w zajęciach szkoły rodzenia, ani uprzednie doświadczenia położnicze nie modyfikowały natężenia objawów.
Quality and sense of life in patients participating in the methadone programme and in those aspiring it
Authors: Szałański Jan , Wyrwich Agnieszka
Published: February 2024

Celem tej pracy było ustalenie, czy osoby uzależnione od opiatów, uczestniczące co najmniej rok w programie metadonowym w porównaniu z osobami uzależnionymi od opiatów, które nie uczestniczą w takim programie, przejawiają istotnie wyższe nasilenie globalne poczucia jakości i sensu życia oraz ich komponentów. Badanie przeprowadzono w 2002 r. wśród pacjentów programu metadonowego w Warszawie i Poznaniu. Takie samo badanie zostało przeprowadzone wśród pacjentów zakwalifikowanych do programu metadonowego w Łodzi. Jakość życia oceniona została za pomocą kwestionariusza SF-36. Do oceny sensu życia zastosowano ‘‘Purpose in Life Test’’ (P.I.L.). Istotne statystycznie różnice wystąpiły w zakresie 7 z 8 podskal SF-36 jak również w 5 z 7 sfer P.I.L.
Effectiveness of mesenchymal stem cell therapy in cats with chronic gingivostomatitis
Authors: Nekouei Omid , Tung Wong San , Ka Yi Leung Tiffany , An Ngai Qi , Sum Wong Wing , Almendros Angel
Published: February 2024

PICO Question
In cats with chronic gingivostomatitis, does using intravenous mesenchymal stem cell therapy, compared to not using it, lead to the improvement of clinical signs?
 
Clinical bottom line
Category of research
Treatment.
Number and type of study designs reviewed
Five interventional studies (clinical trials).
Strength of evidence
None.
Outcomes reported
The reviewed studies indicate intravenous mesenchymal stem cell (MSC) therapy is safe to administer and can be effective in remission or alleviating the clinical signs of refractory, chronic gingivostomatitis in cats that have undergone full-mouth tooth extraction.
Conclusion
The collective evidence supports the intravenous administration of mesenchymal stem cell (MSC) therapy in cats with chronic gingivostomatitis following dental extraction. However, conducted clinical trials are prone to different degrees of bias due to the lack of independent control groups, the small number of subjects, and enrolling subjects with various severity of the disease. Therefore, more robust evidence can be obtained through well-designed randomised controlled trials to confirm the observed positive effects of the treatment in cats with a broader range of characteristics.
 
How to apply this evidence in practice
The application of evidence into practice should take into account multiple factors, not limited to: individual clinical expertise, patient’s circumstances and owners’ values, country, location or clinic where you work, the individual case in front of you, the availability of therapies and resources.
Knowledge Summaries are a resource to help reinforce or inform decision making. They do not override the responsibility or judgement of the practitioner to do what is best for the animal in their care.
Fanzines: perspectivas anarquistas y anarco-punks en la recuperación democrática argentina, 1986-1993
Authors: Dolabani Milagros
Published: February 2024

El trabajo analiza un corpus de fanzines producidos durante los años 1986-1993 en distintas ciudades de la provincia de Buenos Aires y en la capital argentina. Confeccionadas con técnicas y materiales asequibles que no perseguían fines de lucro, estas publicaciones formaban parte de distintas iniciativas políticoculturales ligadas al activismo anarquista y la escena del punk underground. Adoptando una perspectiva metodológica para la cual las revistas constituyen objetos polivalentes y heterogéneos, nuestro análisis considera sus dimensiones materiales, textuales y visuales, así como las formas de distribución adoptadas. Bajo esa premisa nos avocamos a reponer los elementos residuales y emergentes que desde allí dialogaron con el pasado y el presente de un periodo signado por el proceso recuperación y consolidación democrática. Por último rastreamos las vinculaciones entabladas entre estas publicaciones, a partir de la superposición de espacios, personas y acontecimientos aludidos dentro del corpus.
Participación de mujeres en guerras y sus escritos del yo: una revisión analítica
Authors: Lerma Mayer Sonia Yuruen
Published: February 2024

El texto gira alrededor de discusiones metodológicas sobre la participación de las mujeres en diferentes guerras, sobre sus procesos escriturales. Dichas reflexiones dan cuenta de cómo ciertas naciones moldean mecanismos generizados de exclusión e inclusión, que producen –al atravesar crisis sociales– experiencias, coyunturas, rupturas y permanencias en las fronteras que las personas y sociedades pueden/deben (o no), cruzar. Posteriormente, se analiza cómo ciertas investigaciones sobre guerras posicionan a las mujeres como sujetos que, a través de la palabra escrita, accionan y construyen estratégicamente sus identidades, entornos y narrativas en clave de lo personal y también de lo social, lo político y la lucha. Al problematizar la relación guerra-nación-género- escritura permite mostrar cómo se moldea, (re)produce y (re)define el género –lo masculino y lo femenino– y, cómo éste naturaliza, justifica y legitima la existencia de las guerras y las naciones.
Santana Pérez, Juan Manuel y Germán Santana Pérez. Puertas en el mar. Islas Africanas Atlánticas en el antiguo régimen. Valencia: Tirant lo Blanch, 373 pp.
Authors: Hernández Suárez Sergio
Published: February 2024

Reseña al libro Santana Pérez, Juan Manuel y Germán Santana Pérez. Puertas en el mar. Islas Africanas Atlánticas en el antiguo régimen. Valencia: Tirant lo Blanch, 373 pp.
Laporan Kasus: Keberhasilan Penanganan Mencret yang Positif Terinfeksi Virus Panleukopenia pada Kucing Kampung
Authors: Dhika I Gede Abijana Satya , Erawan I Gusti Made Krisna , Batan I Wayan
Published: February 2024

Seekor kucing kampung, berjenis kelamin betina, berumur tiga tahun, memiliki bobot badan 3 kg, dengan warna rambut abu-abu bercampur hitam, dibawa ke Klinik Sunset Vet Kuta dengan keluhan diare, muntah, dan nafsu makan menurun sejak dua hari sebelum datang berobat. Keadaan umum tampak lemas dan tidak aktif. Hasil pemeriksaan klinis menunjukkan suhu tubuh kucing kasus 40oC, Capillary Refill Time (CRT) >2 detik. Hasil pemeriksaan hematologi menunjukkan sel darah putih, limfosit, dan neutrofil menurun, diikuti dengan penurunan pada trombosit. Pemeriksaan test kit menunjukkan positif antigen Feline Panleukopenia Virus (FPV). Berdasarkan anamnesis, pemeriksaan fisik dan pemeriksaan penunjang, maka kucing kasus didiagnosis menderita FPV. Pengobatan yang diberikan adalah terapi suportif berupa infus Ringer Lactate (RL) sejumlah 370 mL/24jam lalu dilanjutkan dengan cairan RL manitenance 50 mL/kg BB/hari secara intravena (IV), antibiotik berupa metronidazole dengan dosis 15 mg/kg BB (IV) dua kali sehari selama satu minggu, ranitidine dengan dosis 2 mg/kg BB (IV) dua kali sehari selama satu minggu, maropitant dengan dosis 1 mg/kg BB (IV) satu kali sehari selama satu minggu, tolfenamic acid dengan dosis 4 mg/kg BB (IM) dua kali sehari selama satu minggu. Setelah pemberian pengobatan selama satu minggu menunjukkan perkembangan yang baik dengan adanya perbaikan keadaan umum yaitu kucing mulai aktif kembali dan nafsu makan kembali normal serta suhu tubuh 38,5oC dan CRT <2 detik.
Preconceitos e discriminação na capoeira
Authors: Tomé Tatiana Candida São Pedro , Falcão José Luiz Cirqueira
Published: February 2024

Neste relato de experiência apresentamos algumas sínteses reflexivas acerca de preconceitos e discriminação na capoeira a partir de experiências pedagógicas vividas pela mestra Tatiana, do Grupo Capoeira Luanda, de Goiânia-GO. Se práticas preconceituosas e discriminatórias ainda estão muito presentes em nossa sociedade, o enfrentamento destas requer a adoção de estratégias articuladas que levem em consideração suas configurações históricas e contextuais. Além disso, é fundamental a adoção de políticas públicas intersetoriais e programas permanentes de formação e capacitação que contemplem o respeito à diversidade em todos os âmbitos das relações sociais e o esclarecimento histórico-crítico acerca dos fundamentos que alicerçam e geram diversas formas de preconceitos e discriminações.
O que pode o corpo-capoeira na contemporaneidade
Authors: Pasqua Lívia de Paula Machado , Mwewa Christian Muleka , Silva Paula Cristina da Costa
Published: February 2024

O presente texto configura-se como um ensaio que abrange o corpo-capoeira na contemporaneidade, bem como seus desdobramentos nos campos de expressão e atuação que a Capoeira pode abarcar. Assim, objetivou-se compreender o estado de arte da produção em pesquisas sobre a Capoeira em diferentes âmbitos. Como consequência, surgiram quatro temáticas, nas áreas de: Ciências Humanas (Antropologia e Sociologia), Gênero, Ciências Biológicas e Educação. Apresentamos os resultados capoeristicamente em forma de jogo, com quatro “Pequenas Rodas” de discussão desses temas, além de duas “Papoeiras”, valorizando as vozes de corpos experientes nesse universo. Dessa forma, pretendemos contribuir para futuras pesquisas que valorizem saberes advindos de manifestações de matrizes africanas, para pensar as concepções de corpo na Educação.
Apresentação
Authors: Vilhas Jinx , Vargas Júlia , Paccillo Giovanna , Cassari Paloma de Paula
Published: February 2024

Anualmente, o corpo discente do Programa de Pós-Graduação em Antropologia Social da Universidade Estadual de Campinas (Unicamp) tem realizado as Jornadas de Antropologia John Monteiro. Desde 2011, o evento consiste numa semana acadêmica dos cursos de mestrado e doutorado, que reúne discentes de pós-graduação em antropologia e áreas afins, construindo um importante momento de integração, troca de conhecimentos e fortalecimento de redes. A programação do evento compreende desde mesas e oficinas, até a apresentação de artigos em Grupos de Trabalho (GTs) e o Prêmio Mariza Corrêa de Antropologia Visual. Este, por sua vez, é organizado conjuntamente pela comissão organizadora das Jornadas de Antropologia John Monteiro, e pelo comitê editorial da Proa: Revista de Antropologia e Arte.
EVLİLİK GEÇİŞ DÖNEMİ GELENEKLERİNDE GÖSTERGELER: EKMEK UMMA ÖRNEĞİ
Authors: KARATAŞ Hicran
Published: February 2024

Halkın kültürel semboller ve imajlar dünyasında bazı nesnelerin özel anlamlara karşılık geldiği, bu nesneler aracılığıyla toplumsal ilişkileri zedelemeden iletişim kurabildiği bilinen bir gerçekliktir. Bu nesnelerin sahip olduğu özel anlamlar geleneğin kodlarıyla yetişmiş her birey tarafından hâlihazırda bilindiğinden nesne ile verilmek istenen mesajın genel anlamının açıklanmasına gerek duyulmamaktadır. İletişim boyutuyla bu türden nesnelere gösterge denilmektedir. Aynı kültür dairesi içinde teneffüs eden her birey, bu göstergelerin soyut anlamlarını somutlaştırabilme yeteneğini haizdir. Bu çalışmada, Kastamonu’ya bağlı Çatalzeytin ilçesinde halk hayatının iletişim sürecinde, sosyal ilişkileri sağlıklı bir biçimde sürdürebilmek adına geliştirilmiş bir iletişim sistemi olan “ekmek umma geleneği”, iletişim kuramları bağlamında ele alınmaktadır. Sözü geçen coğrafyada, evlilik geçiş dönemine bağlı gelenek ve ritüellerin tatbikatı safhası, sosyal bir varlık olan insanın mevcut sosyal ilişkilerini korumak adına bilinmeyen zamanlarda icat ettiği gösterge bilime dayalı iletişim sisteminde belirli kültürel ve üst dilsel kodlarla donatılmıştır. Bu çalışmada, ekmek umma geleneği belirli bir kültür sahasında iletişim çatışmalarını ve sosyal birliği korumak adına geliştirilen kodlarla ve sembollerle çevrelenmiş bir iletişim stratejisi olarak incelenecektir. Bu sahada, evlilik geçiş dönemi bağlamında ekmek ve soğanın sözsüz iletişim sisteminin bir parçası olarak taşıdığı değer ve üstlendiği roller tanıtılacaktır.