bluuebunny/crossref_metadata_2025 huggingface dataset:
MEMBANGUN INGATAN INSTITUSIONAL: ARSIP KELEMBAGAAN DI DALAM ORGANISASI SENI
Authors: Putri Kiki Rizky Soetisna
Published: April 2023

Documenting institutional archives in an art institution is rarely the main discussion. So far, institutional archives have only been assessed in terms of an administrative nature, but in fact, this documentation can be a way to build institutional memories. This paper is an overview of a workshop on institutional archiving in an art organization held at the Asia Art Archive, Hong Kong from 23 to 25 May 2019. The workshop was attended by various art organizations in the Asian region. Furthermore, this paper will use an analytical-qualitative approach to describe archives and institutional archives, management, success parameters, and preservation problems faced, especially for the Asian region which is very unfavorable climatically for several archive mediums. In closing, this paper will link with one of the archiving projects carried out in The Aesthetics & The Sciences of Art Research Group (ASARG), Faculty of Art and Design, ITB called CIVAS (Center for Indonesian Visual Art Studies).

keywords: institutional archiving, institutional memory, art organizations, Indonesian visual art
Artritis de difícil manejo, entre dos visiones
Authors: Aguirre Richard
Published: April 2023

En PANLAR 2021 se enfrentarán argumentos entre las corrientes europea y americana para su tratamiento.
The Future #10s of Rheumatology
Authors: Aguirre Richard
Published: April 2023

The Copa América, with young rheumatologists from the continent, is a knowledge competition with professionals from the region.
Another Turn of the Screw The COVID-19 Crisis and the Reinforced Separation of Capital and Care
Authors: Scheffer Raquel
Published: April 2023

In most Latin American countries, the upper and middle classes tend to meet their care needs through the market, resorting to options such as private schools and care centres, as well as the labour of domestic workers. However, these practices were affected by the COVID-19 pandemic and its containment measures. Drawing on a series of interviews with employers of domestic workers in Paraguay, this paper analyses the changes in convivial relations and arrangements regarding the distribution of care within households that outsource domestic chores and had to adapt to lockdown measures. By doing so, I seek to highlight not only changes in the routine of family members but also the exacerbation of inequalities regarding the social organisation of care, and the discourses provided for justifying and naturalising these inequalities. I argue that while at first glance, lockdown measures seemed to have contested the separation of the world of work and family, they produced a rebound effect that translated into a reinforced separation of capital and care, expressed through a deepening of the privatisation, feminisation and commodification of care.
Intersectional Convivialities Brazilian Black and Popular Feminists Debating the Justiça Reprodutiva Agenda and Allyship Framework
Authors: Schultz Susanne
Published: April 2023

The concept of reproductive justice is currently receiving a lot of attention in transnational counter-hegemonic feminisms. The text explores how Black and popular feminism are adopting the concept currently in Brazil. In the first section, the text deals with implications for agenda setting and reflects the movements’ strong reference to necropolitical dimensions of reproductive relations. Three elements of agenda setting are explored: addressing structural inequality within “classical” reproductive health issues; the attention to anti-natalist strategies, such as a continuous policy of sterilisation; and experiences of motherhood/parenthood being stigmatised or attacked. In the second section, the text explores another level of meaning of reproductive justice, namely that of being a framework for intersectional feminist alliances. Therefore, it deals with how the movements negotiate different positionalities and the question of allyship within their everyday convivialities. The movements negotiate these organisational challenges by reflecting processes of collective repositioning in a complex way and referring to important concepts of contemporary anti-racist and social movements in Brazil, such as não lugar, aquilombamento, and bem-viver.
Control Analysis of Vehicle Steering System based on Closed-Loop Control Algorithm
Authors:   School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo 454950, P.R. China, Hongzhen Yang  , Bin Zhang  ,   School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo 454950, P.R. China, Yanjun Liu  ,   School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo 454950, P.R. China
Published: April 2023

When a four-wheel vehicle turns and the steering centre of the front and rear wheels is one point, it is regarded as the theoretical optimal steering of the vehicle and the goal of optimal control. Aiming at the commonly used multi-link steering system, the system control was analysed, according to the structural characteristics and angle relationship. Based on the closed-loop control algorithm, the optimal control of the steering system was designed and analysed, according to the steering control quantity obtained by the target path and parameter feedback. At the same time, the state variables and prediction parameters of the system were analysed. Based on the actual vehicle and steering optimal control system, the changes of various parameters of vehicle operation under no-load condition and turning at 30 km/h were analysed and compared with the theoretical optimal value to verify the effectiveness of the control system. The results show that: the state variables of the control system are predicted by discrete analysis and half step integration, and the accuracy is high. In the steady state turning condition, with the lifting of the vehicle, the radius of the steering track gradually increases, and the vehicle shows obvious understeer characteristics. Under the two working conditions, the characteristic curves obtained by the steering control system are highly consistent with the theoretical values, and the peak error of the two is controlled within 5%, indicating the reliability of the optimal control algorithm, which provides a reference for such design optimization.
Challenges of Nanotechnologies and some Reliability Aspects
Authors:   Prof. Eng., Doctor Honoris Causa of Military Technical Academy of Romania and of Technical University of Republic of Moldova (Chișinău), BĂJENESCU Titu-Marius ,   Romanian Academy „Tudor Tănăsescu” Prize Laureat
Published: April 2023

The paper takes a fresh look at lessons learned from the last domain development. After a short introduction, the advent of 3D Technology, the device shrinking, carbon nanotubes, packaging and fabrication, critical dimensions, safety of environmental, health and safety (EHS), and the evaluation of reliability are presented.
Knowledge Management and Academic Service Quality on Organization Performance
Authors:   Institut Teknologi Nasional Bandung, PHH Mustofa, Bandung, 40124, Indonesia, UMAROH Sofia , PUTRA Kurnia Ramadhan ,   Institut Teknologi Nasional Bandung, PHH Mustofa, Bandung, 40124, Indonesia, FAHRUDIN Nur Fitrianti ,   Institut Teknologi Nasional Bandung, PHH Mustofa, Bandung, 40124, Indonesia, ARSYAD Zulkifli ,   Polytechnic State of Bandung (POLBAN), Gegerkalong Hilir, Bandung, 40559, Indonesia
Published: April 2023

Knowledge management (KM) in education is considered an approach that enables people to collect information, share and use knowledge to improve organizational performance through educational programs, student outcomes, and effective decision-making of work processes. Organizational performance in the university includes student satisfaction, research productivity, curriculum, academic staff responsiveness, and research rankings. KM through the adoption of advanced technology enables organizations to implement better processes, strong and good collaborative structures, knowledge and information sharing, and problem-solving tools. However, limited studies examine the determinants of the KM process and their relationship to university performance through academic service quality from an educator's perspective. In this study, we proposed a theoretical research model to investigate the determinants of the KM process and examine its relationship to university performance through academic service quality. Data collected from 71 academic staff in universities were used to test the hypotheses with structural equation modelling – Partial Least Square. The results showed information technology and culture have a positive impact on the KM process. Quality of academic services partially mediates knowledge management and university performance. KM process and quality of academic services determine and influence organizational performance substantially (f-square=77.6 %). Finally, among the KM processes, knowledge discovery was found to have the highest effect size on organizational performance. However, KM enablers consisting of rewards & incentives, and organizational support were not proven to influence the KM process. Both culture and IT capabilities must be considered by universities in supporting the KM process and building a culture that supports sharing and utilizing knowledge in every task. Additionally, this capability can help improve the quality of academic services which leads to increased organizational performance.
Poznávat spolu s experty: kontextuální vědění ve vědě a kolem ní
Authors: Kutrovátz Gábor
Published: April 2023

The original concept of epistemic dependence suggests uncritical deference to expert opinions for non-experts. In the light of recent work in science studies, however, the actual situation of epistemic dependence is seen to involve the necessary and ubiquitous need for lay evaluations of scientific experts. As expert knowledge means restricted cognitive access to some epistemic domain, lay evaluations of expert knowledge are rational and informed only when the criteria used by non-experts when judging experts are different from the criteria used by experts when making their claims. The distinction between ‘substantial knowledge’ and ‘contextual knowledge’ allows for the laypeople to know with experts without having to know precisely what experts know. Such meta-expert evaluations are not specific to the public sphere outside science, nor are they limited internally to science, but they are present in a wide range of contexts in and around science. The paper legitimizes the concept of contextual knowledge by relating it to the relevant literature, and expounds the idea by identifying some elements of such a knowledge.
Funkce Rozumu
Authors: Whitehead Alfred North
Published: April 2023

Translation.
Pravidlá: spoločnosť, jazyk a racionalita
Authors: Koreň Ladislav
Published: April 2023

This critical review focuses  on the topic of cooperation and rules  discussed in the book by Jaroslav  Peregrin: Človek a pravidla [Man  and Rules] (Praha: Dokořán 2011).  Except of an extensive excurse into  the structure of Peregrin's main ideas  and arguments, it aims to provide  a  systematic analysis of some central issues in this interdisciplinary  theoretical field, while discussing  some elements of Peregrin's specific  approach. In particular, it will be  argued that Peregrin's preferred  conception of rule - as propositional  knowledge to the effect that something ought to be (or ought not to be)  a certain way - cannot serve well his  purposes, if Peregrin is to keep his  evolutionary perspective on rules.
Po postmoderně: Možnosti hermeneutiky v přírodních vědách
Authors: Heelan Patrick Aidan
Published: April 2023

Translation
O technických obrazech v sociálních vědách
Authors: Šimůnek Michal
Published: April 2023

The review article of the anthology David ČENĚK – Tereza PO- RYBNÁ (eds.), Vizuální antropologie – kultura žitá a viděná [Visual Anthro- pology – Culture Experienced and Seen]. Pavel Mervart: Červený Kostelec 2010, 332 pp., identifies several tendencies that shape the role of technical images in the contemporary social sciences. The first part of the review sums up the content of the anthology and contextualize it within the debates in visual social sciences. Subsequently, it discusses mainly three following issues: the critique of the subject-object relation and the proposals for its transformation; the emergence of the so-called participatory methods; and the claims for the produc- tion of outside-text representations and the constitution of shared anthropology. The article proceeds by the following order: first it describes and illustrates an issue as it is dealt with in the reviewed anthology and then it outlines the broader discussions within social sciences. Finally, the review article focuses on the consequences of digitization and hypermedialization for the discussed issues.
A Theory's Travelogue: Post-Colonial Theory in Post-Socialist Space
Authors: Hladík Radim
Published: April 2023

This essay examines theoretical arguments surrounding the use of post-colonial theory as a way to fill in the epistemological lacuna in the studies of post-socialism. It reviews the various streams of this theoretical development and employs Edward Said’s notion of “traveling theory” to demonstrate that theoretical claims made by proponents and opponents of this particular comparative perspective are historically, socially, and geographically situated, although not fixed. Disciplinary, national, and institutional affiliations, instead of theoretical justifications, are identified as important factors in the propensity to accept or resist the introduction of post-colonial perspective on Central and Eastern Europe and the former Soviet Union. The essay concludes by acknowledging the potential usefulness as well as the limits of post-colonialism in the conceptualization of the post- socialist space.
Cvičení žákovského vidění: didaktický obraz, diapozitiv a film v mediálním kontextu konce 19. století
Authors: Česálková Lucie
Published: April 2023

The studyexamines themodes of representationand communication of information through illustrativeteachingaidsin the 19thcentury. It focuses primarily on the didactic wall paintings and the tradition of lectures with slides and notes, how could the experience of these types of collectively observed images influence impressions and expectations of early film audiences. Didacticimagesare here analyzedprimarilyinterms oftheir compositional features (the arrangement of displayed objects within the frame), but in an effort to explain how processuality penetrated into the didactic image of the 19th century also with regard to the aspect of time. As a result, the study calls for a reassessment of the importance of the didactic wall painting in the formation of modern visuality and observational practices of the late 19th century.
Analisis Persepsi Siswa terhadap Penggunaan Aplikasi Quizizz pada Materi Hidrokarbon
Authors: Sulasmi Rahma , Mahartika Ira
Published: April 2023

Quizizz online learning application is one of the most widely used learning evaluation applications, especially during the covid-19 pandemic. This study aims to analyze students' perceptions of the use of Quizizz in chemistry subjects with Hydrocarbons Material. This study uses a quantitative method with a descriptive approach at Madrasah Aliyah Nurul Wathan Pasar Kembang. 36 students were selected by purposive sampling, the data were collected using a questionnaire technique, while the data were analyzed using descriptive analysis techniques. The results of the data analysis showed that students (89%) had a very good perception of the use of Quizizz in chemistry subjects with Hydrocarbon Materials.
Pengaruh Komunikasi Interpersonal Guru Sejarah Kebudayaan Islam Terhadap Motivasi Belajar Siswa
Authors: Amelia Dina , Yudhyarta Deddy Yusuf
Published: April 2023

The purpose of this study was to determine the effect of interpersonal communication of Islamic cultural history teachers on the learning motivation of class IX.4 students at Madrasah Tsanawiyah Negeri 2 Indragiri Hilir. The research method with a quantitative approach uses data collection techniques, namely questionnaires and documentation. While the data analysis technique uses a simple regression analysis formula. The population in this study were all students of class IX.4, totaling 36 students. The results showed that the effect of interpersonal communication on teachers of Islamic cultural history reached 64.32% and the influence of student learning motivation reached 60.73%. There was also the effect of interpersonal communication on teachers of Islamic cultural history on student learning motivation in class IX.4 which is indicated by F. count ≥ F table, then Ho is rejected, meaning it is significant, namely F count 10.43 ≥ F table 4.13, then Ho is rejected, and Ha is accepted.
ULTRASOUND DIAGNOSIS OF SUBACROMIAL FIBROSIS IN PATIENTS WITH ROTATOR CUFF IMPINGEMENT SYNDROME
Authors: Andronnikov Evgenii A. , Diomidova Valentina N. , Drandrov Rodion N. , Nikolaev Nikolai S.
Published: April 2023

Rotator cuff impingement syndrome (SURM) of the shoulder is considered one of the most common causes of pain in the shoulder joint in people of working age, mostly males. Due to the absence of characteristic signs of this pathology of the shoulder joint at the initial stage of the disease, fibrotic changes in the subacromial space (FI SAP) are detected late. The aim of the study was to evaluate the effectiveness of ultrasound navigation in the diagnosis and verification of fibrous changes in the subacromial space in patients with rotator cuff entrapment syndrome. Materials and methods. An analysis was made of 86 patients with cuff impingement syndrome, in whom fibrotic changes in the subacromial space are was initially detected according to ultrasound data. In group N1 (n1 = 42), the study data were analyzed without a minimally invasive intra-articular treatment procedure at the stage of conservative treatment, and in group N2 (n2 = 44) – with ultrasonic navigation of the subacromial space during a minimally invasive intra-articular treatment procedure. The comparison group (N3; n3 = 25) represented individuals without shoulder joint pathology. All patients underwent an ultrasound examination of the shoulder joint (Philips Sparq ultrasound scanner, linear high-density multifrequency transducer 5–13 MHz). Verification of the results of ultrasound of the shoulder joint is confirmed by the data of other methods of radiation imaging. Results. Ultrasound examination of the shoulder joint using dynamic functional tests before the start of therapeutic manipulations in patients with fibrotic changes in the subacromial space (in groups N1 and N2) visualization of the thickening of the supraspinatus tendon in combination with a decrease in the thickness of the subacromial space correlated with limitation of movement of the upper limb in the shoulder joint (p < 0,001). Comparative results in the study groups showed that the use of ultrasound diagnostics and navigation technologies during a minimally invasive intra-articular treatment procedure for fibrotic changes in the subacromial space provides an improvement in clinical manifestations. Conclusions. The possibility of ultrasonic visualization of the supacromial space in normal conditions without pathological changes in the shoulder joint and with fibrous changes in the subacromial space allows us to recommend the proposed method of ultrasound examination of the shoulder joint to be included in the treatment and diagnostic algorithm for the syndrome of incarceration of the rotator cuff of the shoulder. Ultrasound navigation as an effective method for diagnosing and verifying subacromial fibrosis in patients with rotator cuff entrapment syndrome.
TREATMENT OF JUVENILE IDIOPATHIC ARTHRITIS WITH SYSTEMIC MANIFESTATIONS WITH INTERLEUKIN INHIBITORS-1 (CLINICAL CASE)
Authors: Zhuravleva Nadezhda V. , Aksionova Angelina V. , Yakupova Svetlana P. , Smirnova Tatyana L. , Prokopyeva Taisiya V. , Arkhipova Anastasia V. , Gurianova Evgenia A.
Published: April 2023

The purpose of this study is to evaluate the effectiveness of the treatment of juvenile idiopathic arthritis with systemic manifestations with interleukin-1 (IL-1) inhibitors. Material and methods. A prospective analysis of the course of systemic juvenile idiopathic arthritis was performed in a 15-year-old patient; she was examined using laboratory and instrumental methods before and after therapy with the interleukin-1 (IL-1) inhibitor canakinumab. Laboratory examination included general and biochemical blood tests, determination of rheumatoid factor, C-reactive protein, lactate dehydrogenase, procalcitonin, antinuclear antibodies, anti-citrullinated peptide (ACCP) antibody titer, antistreptolysin-O titer. The patient underwent ECG, echocardiography (EchoCG), ultrasound examination of the pleural cavities, abdominal organs, kidneys, knee joints, radiography of the chest cavity organs and radiography of the hand, computed tomography of the chest and abdominal cavities. Results. Examination of the patient revealed: synovitis of the knee joints, bilateral pleurisy and pericarditis, positive markers of the inflammatory process, characteristic of juvenile idiopathic arthritis with systemic manifestations. The patient was diagnosed with leukocytosis up to 20.3×109/l with a stab shift of leukocytes up to 18%, an increase in the erythrocyte sedimentation rate of 55 mm/h, an increase in C-reactive protein up to 288 mg/l, lactate dehydrogenase up to 500 units/l, in the analyzes urine revealed moderate hematuria and proteinuria. X-ray examination revealed structural changes in the knee and interphalangeal joints. We observed the effectiveness of canakinumab therapy. During therapy with canakinumab, after the second injection, positive dynamics was noted: leukocytes 5.1 × 109/l, ESR 6 mm/h, CRP 12 mg/l, relief of symptoms of the disease. Conclusions. During therapy with canakinumab, the patient showed positive clinical and laboratory dynamics of the disease. The study demonstrated the effectiveness of interleukin-1 (IL-1) inhibitors, canakinumab, in achieving remission of the disease.
MEDICAL AND STATISTICAL CHARACTERISTICS OF PATIENTS WITH ODONTOGENIC PHLEGMONS (BASED ON THE MATERIALS OF THE REPUBLIC OF UZBEKISTAN)
Authors: Zhuraev Bahodyr N. , Ksembaev Said S. , Salakhov Albert K. , Kholmatova Matluba A.
Published: April 2023

In the clinic of purulent maxillofacial surgery, one of the most acute problems is odontogenic phlegmons arising from the spread of pathogenic origin from the focus of chronic infection of the so-called "causal" tooth, which is associated with the severity of the purulent process itself, the rapidity of its spread to neighboring cellular spaces, a high risk of severe complications and frequent death]. The problem under consideration has not only medical, but also important socio-economic significance. The aim of the work was to study the prevalence of odontogenic phlegmon in the Republic of Uzbekistan to identify the main trends in the development and course of this pathology. Materials and methods. 845 case histories of patients with odontogenic phlegmon hospitalized in the hospital of maxillofacial surgery of the Department of adult maxillofacial surgery of the Tashkent State Dental Institute in the period from 2019 to 2021 were studied. Statistical processing of the research results was carried out using Microsoft Excel 10 application programs and the STATISTICA for Windows 6.0 statistical package (Statsoft, USA) by the method of variational statistics using the Student's parametric criterion. We also used a statistical research method – Pearson Chi-squared. Results of the study. There was an increase in the number of patients with odontogenic phlegmon, among whom residents of the districts of the Republic of Uzbekistan prevailed and were most often found among people of working age. The odontogenic "cause" in most cases were the molars of the lower jaw. The structure of morbidity was dominated by odontogenic phlegmons of one cellular space. Most of the hospitalized patients, bypassing the pre-hospital stage, went to the hospital on their own. Findings. Given the increase in the number of patients with odontogenic phlegmon, the issues of their prevention and effective treatment remain relevant.
CHANGES IN THE HISTAMINE STATUS OF THE INTERNAL ORGANS OF LABORATORY ANIMALS DEPENDING ON THE SILICON CONCENTRATION IN DRINKING WATER
Authors: Gordova Valentina S. , Grigoreva Evgeniia A. , Sergeeva Valentina E. , Smirnova Nadezhda V. , Karyshev Pavel B.
Published: April 2023

The results of a study of the histamine status of the internal organs of Djungarian hamsters when silicon was taken with drinking water are presented. The aim of the study was to assess the histamine status of the liver, spleen and testicles of Djungarian hamsters when silicon was ingested with drinking water for three months at various concentrations. Material and methods. The hamsters were kept in the vivarium on a standard diet with free access to drinking water for three months. Hamsters of the control group (n = 3) received bottled drinking water, hamsters of the experimental groups received the same bottled water with the addition of sodium metasilicate 9-hydrate at a concentration of 10 mg/l in terms of silicon (the first experimental group, n = 3) and 20 mg/l in terms of silicon (the second experimental group, n = 3). To detect and quantify histamine in organs and tissues in cryostat sections of the liver, spleen and testicles, the fluorescent-histochemical Cross method was used. A general blood test and a blood test for glucose and cholesterol were also performed. Results and their discussion. A general blood test of hamsters that received drinking water with different concentrations of silicon did not reflect the effect of microelement intaked into the organism, while, depending on the concentration of silicon in water, the average blood glucose level tended to increase, and the cholesterol level tended to decrease. The obtained results do not contradict our previous studies in that direction. It has been shown that the concentration of silicon in drinking water from 10 mg/l hardly noticeably affects the histamine status of such organs as the liver, spleen and testes: only the intensity of histamine luminescence in macrophages of the red pulp increases statistically significantly. When silicon enters the body with drinking water at a concentration of 20 mg/l, the histamine status of organs changes more noticeably, the cells surrounding the central veins and the interstitial histamine-containing testes cells are “involved” into the reaction, which is visually reflected in the luminescent morphology of the investigated organs. Conclusions. The intake of silicon at a concentration of 10 mg/l and 20 mg/l for three months affects the histamine status of the liver, spleen and testes of Djungarian hamsters, while the indicators of the general blood test do not change.
BIOLOGICAL COMPATIBILITY AND PROLIFERATIVE POTENTIAL OF FIBROBLASTS SEEDED ON BIOCOMPOSITE FORMED USING LASER RADIATION AND SOLDERS
Authors: Ryabkin Dmitrii I. , Sokolov Aleksey I. , Dydykin Sergey S. , Blinov Dmitry S. , Kurilova Ulyana E. , Blinova Ekaterina V. , Timoshkin Sergey P. , Gerasimenko Aleksandr Yu.
Published: April 2023

The aim of the work was to determine the viability, proliferative potential and adhesive properties of fibroblasts seeded on the surface and in the volume of a biocomposite formed using laser radiation and solders in in vitro experiments. Materials and methods. For the study, Wistar rat fibroblasts obtained at the National Research Center of Epidemiology and Microbiology named after Honorary Academician N.F. Gamalei were used. The biocomposite was formed using laser radiation and solders. The viability of cells on the surface of the biocomposite was assessed using the multiparametric RTCA iCELLigence cell culture analysis system (USA). The cytotoxicity of the biocomposite was determined in combination with triphenyltetrazolium bromide (MTT test, Merck Sigma-Aldrich, Switzerland). The proliferative potential and adhesive properties of fibroblasts were studied using a FEI Helios NanoLab 650 scanning electron microscope. Results and conclusions. The viability of cells on the surface and in the volume of a biocomposite formed using laser radiation and solder was proved using an electrophysical system for analyzing cell cultures. The absence of cytotoxicity of the biocomposite under the action of triphenyltetrazolium bromide in the spectrophotometric MTT test was demonstrated. It was found that during incubation of rat fibroblasts in the volume of the biocomposite, cell death is not observed, but, on the contrary, their proliferative potential is stimulated by increasing adhesion, which contributes to the formation of a dense cell layer. Conclusions. Biocomposite as a whole, as well as its individual elements, creates a favorable environment for the growth of fibroblast culture and can be used to restore the integrity of blood vessels using laser radiation and solder.
Demiryollarında Kullanılan Ağır Hizmet Dizel Motorlarında Viskozite Ölçümüyle Motor Yağı Yakıt Seyreltmesinin Teşhisi
Authors: TAT Mustafa Ertunç , DORU Emine
Published: April 2023

Kestirimci bakım yöntemleriyle karmaşık mühendislik sistemlerinde ortaya çıkabilecek arızalar önceden kontrol altına alınabilir. Titreşim analizi, ultrasonik test, termal kamera ile görüntüleme ve yağ analizi gibi uygulamalar kestirimci bakım yöntemleridir. Bu yöntemlerle, arıza henüz meydana gelmeden veyahut ciddi boyutlara ulaşmadan, sensörler aracılığıyla sistem ve ekipman gerekliliklerine göre belirlenmiş verilerin elde edilip incelenmesiyle muhtemel arızaların önüne geçilebilir. Bu çalışmada bir ağır dizel motor yağının (10W-40) içerisine ağırlıkça %1, %2, %5 ve %10 oranlarında biyodizel yakıtı konularak seyreltilmiştir. Yakıtla seyreltilmiş ağır dizel motor yağının viskozite ve yoğunluk performansları Anton Paar Automated Micro Viscometer ve DMA 4500 Density Meter kullanılarak 40, 60, 80 ve 90 ℃, sıcaklıklarında ölçülmüştür. Yağın içerisindeki yakıt miktarı seyrelmesinin viskozite ve yoğunluk değerleri üzerinden gözlemlenebildiği, seyrelmenin artmasıyla viskozitenin düştüğü fakat yoğunluğun arttığı ve yoğunluk üzerindeki değişmenin sıcaklıktan etkilenmediği fakat viskozite değerlerindeki ayrışmanın sıcaklıktan etkilendiği görülmüştür. Özellikle yakıt seyrelmesinin viskozite üzerindeki sıcaklığa bağlı etkisi %5 oranına kadar sabitken, seyrelme oranı artıkça sıcaklığa bağlı davranış değişiklik göstermiştir.
Kewenangan Diskresi Kepolisian Dalam Penghentian Penyidikan
Authors: Lingga Michael Ken , Saptenno Marthinus Johanes , Pasalbessy John Dirk
Published: April 2023

Introduction: Discretionary authority is the authority possessed by the police as mandated by law to carry out their duties, especially in responding to social phenomena in society.Purposes of the Research:  This study aims to determine the form of the exercise of discretionary authority in the termination of an investigation, and what are the implications of the exercise of discretionary authority in the act of terminating an investigation.Methods of the Research: This study uses a normative legal research method, which aims to determine the form of the exercise of discretionary authority in the termination of an investigation, and what are the implications of the exercise of discretionary authority in the act of stopping an investigation.Results of the Research: The discretionary authority of the police in stopping investigations is the authority given as compensation for government duties carried out by investigators.
Surfactant properties and emulsifying activity of the gum exudate of Prosopis juliflora (Sw.)
DC.
Authors: Rincón-Acosta Fernando , Félix López Miryam , Hurtado Ernesto , Guerrero-Castillo Rocío , Beltrán Olga
Published: April 2023

Gums exudates are macromolecules consisting of carbohydrates (majority fraction), proteins and lipids (minority fraction), with variable concentrations of minerals, polyphenols, flavonoids, tannins and other bioactive phytochemical compounds. These natural products are used as emulsifying agents in multiple industries. The surfactant properties of a new source of gum exudate produced by Prosopis juliflora (Sw.) DC. were evaluated. Additionally, water-oil dispersions prepared with this natural polymer were tested for their emulsifying capacity and stability. A Du Noüy ring tensiometer was used to determine the amphipathic behavior of the investigated gum. The gum exudate of P. juliflora tested at 0.5 % m/v, decreases the values of surface tension (49.35 dyne.cm-1) and interfacial tension (12.78 dyne.cm-1), which evidences the potential emulsifying activity (EA) of this polysaccharide. EA values of 95 % and emulsion stability of 95.8 % were obtained, suggesting that P. juliflora gum contributes to improve the capacity and speed of adsorption of molecules between the dispersed phase and continues to form a stable emulsion. The surfactant and emulsifying activity of the investigated gum is associated with the high protein content (16.89 %) and the presence of methyl groups in its structure. Therefore, the gum exudate of P. juliflora constitutes a promising source of hydrocolloids as an emulsifier that could be evaluated in the manufacture of pharmaceuticals, food and even cosmetics. Additionally, it constitutes an unexploited natural resource that would contribute to the development of the South American regional economies where this species grows.
Fuel characterization using remote sensing in support of large-scale wildfire management in the Cerrado biome
Authors:   , Leite Rodrigo Vieira
Published: April 2023

Cerrado is the most biodiverse tropical savanna in the world characterized by a range of vegetation structures from grasslands to forests. However, Cerrado’s stability has been threatened by anthropogenic changes in the fire regime. Managing fuels is one of the most important options we have for reducing wildfire’s negative impacts on society and the environment and amplifying positive ones on fire-dependent flora. Large areas such as Cerrado often require remote sensors to characterize fuels, especially those on-board space-based platforms. Even though spaceborne sensors have been around for over 50 years, new opportunities arise with recently launched sensors with unprecedented characteristics. Yet, Cerrado fuel properties and their potential to be characterized with the new generation of sensors are still little studied. In this thesis proximal and near-surface approaches as a step forward to scale-up Cerrado fuel properties are presented. The thesis is divided into three chapters, where: i) fuel moisture content is predicted using leaf spectroscopy and machine learning algorithms, ii) fuel load is predicted for the whole Cerrado extent using lidar data collected from unoccupied aerial vehicles and the recently launched GEDI spaceborne lidar sensor and ili) a review of the novel spaceborne remote sensors with potential to be used for fuel characterization and the main fuel-related variables for integrated fire management is presented. The results showed the applicability of spectroscopy and lidar data together with machine learning to retrieve important fuel characteristics for fire management. With the increasing availability of data from sensors with new technologies and capabilities, which allow the upscaling of information collected in the field, it is suggested that we are facing a new era for the mapping and monitoring of fuels, which is essential for the development of integrated fire management programs aiming at preserving the Cerrado biome and similar ecosystems worldwide. Keywords: Fire risk, Vegetation fuel, Spectroscopy, Lidar, GEDI, Machine learning, Satellite-borne sensors
Secagem artificial de toretes de madeira de eucalipto para uso em retortas contínuas de carbonização
Authors:   , Figueiró Clarissa Gusmão
Published: April 2023

A utilização de toretes de madeira, com variados e elevados teores de umidade, é um dos fatores limitantes para produtividade e estabilidade de reatores contínuos de carbonização. Como alternativa aos problemas decorrentes ao teor de umidade dos toretes, a utilização de secadores de madeira pode significar uma adequação e homogeneidade do teor de umidade da matéria-prima lenhosa, de maneira rápida e de forma controlada, garantindo melhor eficiência do processo e qualidade do carvão vegetal, o que auxilia na consolidação desta tecnologia, uma vez que no mercado e na literatura, dados de sistemas de secagem para toretes de madeira são escassos, tendo na sua maioria, para secagem de partículas e cavacos. Logo, a presente tese de doutorado objetiva fornecer subsídios teóricos para auxiliar no desenvolvimento de um secador industrial para secagem de madeira, na forma de toretes, para serem utilizados em sistemas contínuos de carbonização. Para isto, foi projetado e construído um sistema de secagem de toretes de madeira em escala experimental do tipo leito fixo, para a avaliação das variáveis da madeira e do processo de secagem, a saber: o layout de corte (40 cm de comprimento, 20 cm de comprimento e rachada); classe de diâmetro (>12 cm, 12,1 – 14, 14,1 – 16 cm e 16,1 – 18 cm); e tempo de residência da madeira no reator de secagem (30, 60, 90 min) em temperaturas de 300°C. Os toretes “rachados” independente do diâmetro, aqueceram mais, tanto na região do cerne quanto do alburno, principalmente nos maiores tempos de residência de secagem, quando comparados aos demais layouts de corte. A melhor transferência de calor deste layout de corte, propiciou uma maior taxa de secagem e perda de umidade, que por sua vez, impactou diretamente sua eficiência de secagem. Em relação a ocorrência de ignição durante as secagens, os toretes rachados e de os 20 cm de comprimento, quando submetidas ao programa de secagem de tempo de residência de 90 min, entraram em combustão no secador, demostrando que, nas condições aplicadas no presente estudo, este é o limite de trabalho para tais layouts de corte.Palavras-chave: Água na madeira. Tecnologia de carbonização. Transferência de calor. Produção de carvão vegetal.
Efeito da estocagem na qualidade do carvão vegetal de híbrido de Corymbia
Authors:   , Carvalho Amanda Ladeira
Published: April 2023

A estocagem do carvão vegetal consiste em armazená-lo em silos, containers, galpões ou até mesmo em pátios, podendo esses serem abertos ou cobertos, para ser utilizado em época de maior demanda e/ou estratégicas de preço e abastecimento. Acredita-se que o carvão vegetal durante o período de estocagem possa vir a modificar suas propriedades físicas e energéticas, em virtude da friabilidade e variações de umidade no ambiente. O objetivo do trabalho foi avaliar o efeito do tempo e das condições de estocagem na qualidade do carvão vegetal. Foi analisado carvões vegetais de clone híbrido de Corymbia citriodora x Corymbia torelliana, produzidos em sistema fornos-fornalha. O trabalho foi dividido em dois experimentos, a saber: I) carvões vegetais armazenados em dois ambientes, fechado e semiaberto. Em ambos os ambientes foram instaladas pilhas com carvão vegetal na condição seca, ou seja, no teor de umidade de equilíbrio (≈5%), e outra em condição úmida (≈10%), ou seja, adicionou-se água para simular alteração do teor de umidade quando da necessidade de adição de água para apagar foco de fogo durante abertura dos fornos. II) O segundo experimento consistiu em armazenar o carvão vegetal embalado em sacos de ráfia e sacos de papel, além do armazenamento em pilhas (sem embalagem). Para ambos os experimentos, o período de avaliação da estocagem foi de aproximadamente 120 dias (4 meses). Determinou-se o teor de umidade, friabilidade, densidade a granel, composição química imediata e poder calorifico. De acordo com os resultados, no experimento I, durante o período de baixa pluviosidade, o local de estocagem não teve efeito significativo nas propriedades físicas e químicas do carvão vegetal, somente na friabilidade, que aumentou 40%, em média, ao longo do tempo. Durante o período chuvoso, o ambiente de estocagem semiaberto não ofereceu proteção suficiente, resultando no aumento do teor de umidade do carvão vegetal estocado, promovendo redução de 16% no poder calorifico útil e aumento da densidade a granel devido ao aumento da quantidade de água por mesma unidade de volume. Quanto ao tipo de embalagem para estocagem do carvão vegetal (experimento II), verificou-se diferença entre as formas de armazenamento, porém pouco expressivas, o carvão vegetal estocado em sacos de papel teve menor impacto na sua qualidade, principalmente na geração de finos. Conclui-se que a estocagem do carvão vegetal em local fechado e embalado em sacos de papel confere maior proteção ao carvão vegetal quanto a sua qualidade, quando há necessidade de armazenamento por longos períodos. Palavras-chave: Friabilidade. Siderurgia. Armazenamento. Cocção. Teor de umidade
Onde estão as mulheres arquitetas?
Authors: Moreira Amanda , Soares Monteiro Jéssica Mayra
Published: April 2023

Este artigo insere-se na temática de estudo da historiografia da arquitetura brasileira, abordando a atuação e a produção arquitetônica feminina em meados do século XIX, profissionais pouco referenciadas na literatura referente à arquitetura brasileira. Toma como objeto de investigação as arquitetas atuantes nas décadas de 1970 e 1980 na cidade de Teresina, capital do Piauí, com o objetivo de levantar e analisar a atuação destas. Para tanto, vale-se de especialmente de entrevistas, busca em acervos públicos e privados de referências, imagens e projetos, além de extensa pesquisa bibliográfica. Como principais resultados, aponta-se a identificação destas profissionais invisibilizadas pela história, suas formações e atuações, evidenciando a importância das suas produções para o cenário arquitetônico local e contribuindo para a valorização do trabalho feminino.
Regional differences in fatty acid composition in common minke whales (Balaenoptera acutorostrata) from the North Atlantic
Authors: Moller P. , Born E. W. , Dietz R. , Haug T. , Ruzzante D. E. , Oien N.
Published: April 2023

Variation in fatty acid (FA) composition of blubber collected in 1998 from 170 common minke whales (Balaenoptera acutorostrata) was used to study population structure in the North Atlantic. Samples from seven IWC management units were analysed: West Greenland (‘WG’, n = 69); East Greenland (‘CG’, n = 3); Jan Mayen (‘CM’, n = 24); Svalbard (‘ES’, n = 16); the Barents Sea (‘EB’, n = 30); Vestfjorden/Lofoten (‘EC’, n = 7); and the North Sea (‘EN’, n = 21). FA analyses were conducted on both deep and superficial blubber with a one-step extraction and esterification method followed by gas-chromatography. The 43 FAs identified comprised 93-99% of total FAs. CART and MANOVA analyses on FA signatures in both blubber sections suggested a ‘3-geographic Regions model’ where the regions were Greenland (WG, CG), the Northeast Atlantic (CM, ES, EB, EC) and the North Sea (EN). This is in general agreement with a genetic study on the same samples and suggests that differences in FA signatures can be used for studying population structure in minke whales. Potential variation in FA signatures caused by internal and environmental factors needs to be better understood. It is recommended that future studies of blubber FA signatures in minke whales include samples from their entire North Atlantic range (including Canadian and Icelandic waters). Samples should be collected from a pre-specified body site to rule out possible internal variation and during a narrow time-window in the same year to rule out seasonal exchange between areas.
Perception and Attitude about Utilization of Complementary and Alternative Medicine among Caregivers of the Mentally Challenged in Ebonyi State: A Cross-Sectional Study
Authors: Nwoke Esther , Agbapuonwu Noreen
Published: April 2023

Purpose: Mental health issues pose a great challenge to healthcare systems especially in developing countries, and having 35% global burden of sickness/disability, Nigeria shares 13% of it. Individuals, both the victims and relatives desperately try all they can to treat this condition. Informal caregivers including family members and friends play a major role in seeking help and choosing treatment regimen and most of them choose complementary and alternative medicine (CAM).  CAM is popular in treating chronic illnesses including mental conditions in sub-Saharan African as stated by WHO. This study displayed both positive and negative perception and attitude of informal caregivers about CAM use for mental health challenges, characteristics of users, types and outcomes of use. 

Methodology: The study is a quantitative, cross sectional study carried out from 15th February to 15th of November 2022, using self-structured questionnaires. Of 389 questionnaires administered, 381 copies were returned and properly filled (97.5% response). The informal caregivers of the mentally challenged were recruited using convenience sampling method. The participants have mean age and standard deviation of 33.5+/- 8.6years, whose mentally challenged relatives had used CAM for the past 12 months and some current users. The questionnaires included information on socio-demographic data, perception and attitude about CAM use, types in use, and outcomes of use. SPSS versions 25, student test, ANOVA, among others, were used to compare perception and attitude about use of CAM and socio-demographic data of the caregivers. 92% participants confirmed that their mentally challenged relatives use some forms of CAM in treatment. The therapies used included herbal drugs, spiritual intervention, and alternative medical system (homeopathic medicine).

Findings: The result revealed both positive and negative perception and attitude about CAM use and most caregivers could not identify any good effects of these therapies but still use them. The findings also showed that some socio-demographic factors affect CAM use. They noted that CAM use alone cannot cure, but also complicate mental illness.

Unique Contribution to Theory, Practice and Policy: It was concluded that research on effectiveness and safety of each CAM will help improve mental healthcare.
Empathy Among Adolescents Concerning Food Allergies of Their Peers
Authors: Warrior Sharon , Orrego Jamela
Published: April 2023

Food allergies can be defined as having physical reaction(s) to any consumed substance, including anaphylaxis, hives, and nausea. Although many adolescents have food allergies, it was not clear how their peers felt about it or if their awareness impacted their empathy levels. Previous research primarily focused on the scientific aspects of food allergies and how they impact those who possess them. Thus, a study was conducted based off the Interpersonal Reactivity Index (IRI), an established questionnaire that measures empathy, to determine empathy levels among adolescents about their peers’ food allergies across four subscales: Perspective-Taking (PD), Fantasy (FS), Empathic Concern (EC), and Personal Distress (PD). The questions were altered to measure only empathy levels regarding allergies and were divided into two sections so that empathy was measured before and after factual allergy information was presented to the participants. The survey was distributed among classrooms and social media platforms to adolescents ages 14-19. The responses indicate overall empathy scores experienced a slight decrease from 3.375 to 3 (neutral) after the information was presented. However, when a Chi-square analysis was conducted,  and 0.357 < 7.815 (critical value), indicating the decrease was not significant. The findings demonstrate that a paragraph of information is not sufficient as it does not stimulate a significant change in empathy among adolescents regarding their peers’ food allergies. Further studies regarding the extent of external empathy influences should be conducted to determine if more exposure is needed to increase empathy.