bluuebunny/crossref_metadata_2025 huggingface dataset:
Reconstruction of Criminal Policy for Police Personnel who Abused Drugs Based on Justice Value
Authors: Zega Buala , Gunarto Gunarto , Mulyadi Mahmud
Published: February 2022

The background of this research is to find the weaknesses of the current Criminal Policy for Police Personnel Who Abused Drugs and how to Reconstruct the Criminal Policy For Police Personnel Who Abused Drugs Based On Justice Value. This research is a normative-legal type of research that is used to examine the function of a norm that lays the law as an instrument that regulates and controls society. The approach used in this research is conceptual, a statute approach, a philosophical approach, and a comparative approach. The analysis used in this research is descriptive-qualitative. The results show that Police officers who are suspected of using narcotics and subjected to the investigation must still be considered innocent until proven through a court decision that has permanent legal force (the principle of presumption of innocence) as stipulated in Article 8 paragraph (1) of Law no. 48 of 2009 concerning Judicial Power. However, in reality, the enforcement of the police professional code of ethics against members of the police who are entangled in criminal cases of narcotics abuse has not been carried out properly as the police still do not immediately take firm action against members who are entangled in criminal cases of narcotics abuse, it is impressed that the police are still protecting their members and are considered after the members have been tried in general court and were found guilty of committing a narcotic crime. The police should be able to monitor their members more and instill a higher law-abiding attitude so that their members can avoid criminal acts of drug abuse, such as urine tests. For those who have the authority to prosecute violations of the code of ethics committed by members of the police, they should be more strict in taking action against police who are caught in narcotics use cases and should be rehabilitated as soon as possible, not fired or imprisoned.
Dynamic changes in laboratory and instrumental indicators as a prognostic factor in COVID-19
Authors:   Tyumen State Medical University, Tyumen, Zhmurov V. A. , Ermakova P. A. ,   Tyumen State Medical University, Tyumen, Ermakova A. A. ,   Tyumen State Medical University, Tyumen, Mishchenko T. A. ,   Tyumen State Medical University, Tyumen, Zhmurov D. V. ,   Tyumen State Medical University, Tyumen
Published: February 2022

Aim. To evaluate the main laboratory and instrumental indicators in dynamics to determine the prognosis in patients with COVID-19. Materials and methods. The analysis of 120 clinical situations was carried out, the diagnosis of COVID-19 was confirmed in all patients. The patients were divided into 2 groups according to the level of saturation: 1-the level of saturation (SaO₂) 96-98% (n = 53); 2 – the level of SaO₂ 72-95% (n = 67). For the analysis, the main indicators of the unfavorable prognosis and the course of COVID-19 were selected, the results were processed using various methods of statistical analysis. Results. At the time of hospitalization, the parameters we selected for analysis were increased in most patients (CRP, ferritin, D-dimer), the level of platelets and red blood cells was reduced. When monitoring the dynamics of the results obtained, most of the indicators remained high for group 2 patients, for group 1, the indicators returned to normal within a week after the start of therapy. The percentage of lung tissue damage adversely affected the prognosis and the course of the disease, especially for patients of group 2. Conclusion. It is important to monitor the dynamics of certain laboratory / instrumental indicators to improve the prognosis and course of COVID-19.
Determination of age by cartilage tissue in forensic identification
Authors:   Regional Bureau of Forensic Medical Examination, Tyumen, Kalimullin R. R. , Zvyagin V. N. ,   Russian Center for Forensic Medical Examination, Moscow, Galitskaya O. I. ,   Russian Center for Forensic Medical Examination, Moscow
Published: February 2022

The main area of forensic research of human cartilage is related to the diagnosis of age according to the degree of mineralization and ossification. As a rule, they are based on anatomical and morphological, radiographic research methods, less often histological, biochemical, spectral, and computer-tomographic. Ossification of the larynx and costal cartilage begins in the interval from 15 to 20 years and, as a rule, ends in 60-69 years. Cartilage ossification in men occurs faster and more fully than in women. The vast majority of studies on costal cartilage do not have the proper statistical justification and corresponding models, which does not allow us to recommend them for expert practice. Diagnostic models developed for the thyroid and arytenoid cartilage allows use only for the corpses of males. The work on diagnosing a person’s age by cartilage is sporadic and has not yet been introduced into expert practice.
Arteroal circle of white rat and human large brain; similarities and differences
Authors:   Tyumen State Medical University, Tyumen, Nizamov F. Kh
Published: February 2022

White rat is a frequent object for conducting experiments, in particular, for сreating a model of acute cerebral ischemia. When extrapolating the results in the experience, a necessary condition in the study of similar and distinctive features of organ blood supply. On 208 brain preparations of white infertile rats, 119 of which were wits a model pf acute cerebral ischemia by ligation of the common carotid artery on the neck, and 183 recovered brain preparations of people who died from causes not related to the pathology of the central nervous system, similar and distinctive features pf the organ arterial system were studied.
Acute thrombosis of the femoral-popliteal segment, complicated by PE. Description of the clinical case
Authors:   Tyumen State Medical University, Tyumen, Komarova L. N. ,   Clinical Hospital «RZD-Medicine» Tyumen», Tyumen, Kiseleva M. A. ,   Tyumen State Medical University, Tyumen, Nabieva K. U. ,   Tyumen State Medical University, Tyumen, Brutskaya N. V. ,   Tyumen State Medical University, Tyumen
Published: February 2022

Deep vein thrombosis (DVT) and PE are classified as venous thromboembolic complications (VTEO), they remain an important problem in clinical medicine and affect the professional sphere of doctors of all specialties, since their pathogenesis is based on hypercoagulation caused by various causes, in particular, genetic defects of blood clotting factors, diseases of the cardiovascular system, severe injuries and subsequent immobilization, iatrogenic lesions, etc. The article describes a clinical case of treatment, observation and treatment of a patient diagnosed with Subacute phlebothrombosis of the left lower limb. Popliteal-femoral segment. VN II. Non-massive bilateral pulmonary embolism. DN 0-1. Arterial hypertension 2 stages, 2 degrees, risk 3.CHF 1. The study was conducted on the basis of the Regional Clinical Hospital No. 2 in Tyumen. Aim. Description of the identified case, subcute thrombosis of the femoral-popliteal segment, complicated by PE, for a more complete understanding of the problem due to the high prevalence of this pathology in the structure of vascular diseases; analysis of the possibility of early diagnosis and treatment on the example of a specific case. Material and methods. A retrospective analysis of the patient’s medical history was carried out and an example from the practice of the admission department of the Regional Clinical Hospital No. 2 in Tyumen of clinical observation of a patient diagnosed with subacute thrombosis of the femoral-popliteal segment, complicated by PE. Anamnesis of life and disease, clinical, laboratory and instrumental data were evaluated. Conclusion. The most realistic prevention of threatening PE is the effective treatment of acute venous thrombosis. It is very important to timely and adequately assess the risk of thrombosis in each individual case. The consequences of the lack of prevention of thrombosis lead to an increased risk of repeated episodes of venous thromboembolism, the development of post-thrombotic disease, and can also lead to death from PE. It should be noted that it is necessary to monitor CT scans – angiopulmonography – to control the development of pulmonary embolism as a complication against the background of newly formed thrombosis of the femoral-popliteal segment. Sanitary and educational work, active tactics, timely treatment and hospitalization of patients with acute deep vein thrombosis BPS will contribute to improving the quality of life of this category of patients, reducing the percentage of PE and deaths.
Effect Of Product, Distribution And Service Quality on Customer Loyalty Through Customer Satisfaction At Indonesian Marketplace
Authors: Andri Primadi , Jasfar Farida , Kristaung Robert
Published: February 2022

Since in online business must involve a reliable marketing strategy to be able to compete in cyberspace to satisfie and growing customers’ loyalty when the transaction is done without meeting face to face with prospective customers or see the product in person. The objectives of this research are (1) to analyze the relationship of positive product quality, distribution, service quality, on customer loyalty. And the relationship of positive product quality, distribution and service quality on customer loyalty through customer satisfaction simultaneously; (2) to identify the factors that influence customers to choose a marketplace in Indonesia; (3) to analyze the needs and expectations of early consumers. This research was conducted using a survey method. Data were collected using a questionnaire tool with Structural Equation Modeling (SEM) analysis. The sampling technique used the purposive sampling method by taking 400 respondents from the top five marketplace customers in Indonesia. The results indicate that the number of visits and online transactions in the top five marketplaces in Indonesia has changed from previous research data. There is no significant effect of product quality on customer loyalty. However, after re-testing by removing outlier data, there is a significant positive effect of product quality on loyal customers. There is a significant effect of product quality and service quality on customer satisfaction. There is no significant effect of distribution on customer loyalty and customer satisfaction. In addition, there is a significant effect of service quality and customer satisfaction on customer loyalty.
Antecedent and Consequences of Customerelight: A Study at Fine Dining Restaurant in Indonesia
Authors: Aryani Budi , Djasfar Farida , Kristaung Robert , Warsinda Lucy
Published: February 2022

This study is to analyze the role of customer delight in mediating the effect of experiential value on Word of Mouth (WOM) on customers of fine dining restaurants in Indonesia. Questionnaires were distributed using purposive sampling technique in order to obtain a sample of 250 respondents. The research data were analyzed statistically descriptive using the Partial Least Square (PLS) method. The results of the study found that experiential value variables supported by the dimensions of customer escapism, food and beverage excellence and customer efficiency showed a positive influence on customer delight and on WOM. The experiential value variable which is supported by the dimensions of food and beverage excellence has an effect on WOM if mediated by customer delight variable , experiential value variable which is supported by customer escapism dimension also affects WOM when mediated by customer delight variable. The originality of this research lies in the experiential value variable with dimensions of aesthetic experience, and service excellence turns out to have an effect on customer delight or on WOM, customer delight as a mediating variable has no effect on the dimensions of aesthetic experience, service excellence and customer efficiency on WOM. This research is limited only to fine dining restaurants. The managerial implication of this research is that experiential value can be increased through the beautiful appearance of food and beverage excellence accompanied by the appropriate temperature, the customer escapism strategy can be an attractive service alternative if it is equipped with a delightful touch.
MAKNA RITUS DALAM TARI TOPENG CIREBON
Authors: Theguh
Published: February 2022

The role of the mask has always been related to the socio-cultural life of a society. Mask art is a type of folk art. All people can dance mask art as a form to preserve and maintain the artistic heritage of their ancestors. The basis of this research is to reveal the meaning of a Cirebon mask dance symbol. In this research, the method used is descriptive qualitative as an effort to describe and analyze a phenomenon. From this research, it can be concluded that the Cirebon Mask Dance, which is a symbol of the manifestation (representation) of its supporting community, which is displayed in art performances is not just entertainment but has meaning, aesthetics, visual power, and dynamics of motion in its music.
Pencarian Jodoh Daring Masyarakat Urban Indonesia: Studi Kasus Aplikasi Tinder dan OkCupid
Authors: Mellania Carolline , Tjahjawulan Indah
Published: February 2022

Masyarakat urban merupakan individu sosial yang selalu berinteraksi dengan lingkungan di sekitarnya. Kebutuhan masyarakat urban untuk bersosialisi memiliki beragam tujuan, salah satunya untuk mendapatkan pasangan hidup. Perkembangan teknologi digital telah mengubah pola kehidupan masyarakat urban Indonesia termasuk dalam pencarian pasangan hidup. Masyarakat urban dibuat hanyut dalam percintaan virtual melalui aplikasi kencan online Tinder dan OkCupid pada media komunikasi digital smartphone. Nilai-nilai budaya ketimuran Indonesia menjadi samar dalam budaya global yang diciptakan oleh aplikasi kencan online. Dari hasil penelitian dan analisis yang dilakukan, tesis ini memiliki kesimpulan aplikasi kencan online Tinder dan OkCupid berperan sebagai regulator yang menghadirkan ruang negosiasi yang dianggap tabu dalam nilai dan norma di kehidupan masyarakat Indonesia. Aplikasi kencan online dibuat oleh perusahaan pembuatnya dengan memanfaatkan nilai budaya global yang dianut di dalam aplikasi untuk mendapatkan user sebanyak-banyaknya demi kepentingan bisnis semata.
La Estesis como fundamento epistemológico del aprendizaje musical. Indagación desde la dimensión del ser
Authors: Restrepo Rueda John Manuel
Published: February 2022

Este trabajo es el resultado de la búsqueda, desde el rol de educadores musicales, de rutas pedagógicas situadas en una diversidad epistémica más allá de la tradición occidental y sus territorios de influencia colonial en Latinoamérica, Colombia y Antioquia, en particular. En nuestro contexto se han institucionalizado formas de educación musical derivadas del proyecto civilizatorio moderno, lo que ha determinado las estrategias de aprendizaje y sus modelos educativos para la música. En consecuencia, tanto la música centroeuropea de conservatorio como las músicas populares y tradicionales han quedado inmersas en las mismas lógicas de construcción y de producción simbólica. Así, en la educación superior prevalece una mirada universalizante y conservadora que concibe el asunto de la práctica musical, preferentemente en términos del objeto, es decir, de la obra, lo que coarta aspectos tan relevantes como las transacciones simbólicas, los imaginarios culturales, la identidad, las narrativas, la estesis y las matrices de realidad, así como las ontologías que soportan toda su construcción. Por tal razón, es necesario proponer una ruta diferente que explore la formación musical desde la dimensión del ser como eje central de la misma, con el objeto de reincorporar el cuerpo como elemento receptor de conocimiento que favorece la conexión entre los estados emocionales y la construcción del sentido musical en su práctica. Todo ello en relación con tres verbos que resultan fundamentales para este propósito: imaginar, configurar y propiciar experiencias vitales y diversas encaminadas a reforzar, ampliar y complementar las prácticas pedagógicas para la música, con otras herramientas, estrategias y recursos basados en la estesis.
La ciudad acusmática: Procesos creativos de pandemia a partir del paisaje sonoro
Authors: Castro Mendez Edwin Alexander
Published: February 2022

Este artículo, pretende reconocer la importancia quepara el diseño sonoro constituye el paisaje sonorodese los disímiles lugares o espacios en los que el sonido,como factor preponderante, acompaña la vidamisma para dar relevancia al ruido, que, para efectoscreativos, se convierte en el material de trabajo deun diseñador, quien ha encontrado elementos simbólicosen cualquier espacio que pueden dar lugar apensar el ruido como productor de sensaciones quepermiten diseñar piezas que contienen significadopor sí mismas, o que pueden alimentar imágenes decine, instalaciones, performance, entre otras.El recorrido histórico en el que se sumerge este escrito,quiere develar las potencialidades creativas quearroja la vida misma desde su cotidianidad con relevanciaa formas de hacer música alejadas del pensamientotemperado occidental. El texto concluye conla descripción de un trabajo compositivo en medio dela pandemia Covid-19.
A Motive-based Segmentation of Special Event Visitors Interacting in Cultural Events
Authors: Meeprom Supawat
Published: February 2022

This study examined cultural event motivations from a market segmentation perspective to better understand why visitors engage in cultural event activity and their perceived quality of cultural event offerings. Motivational scales customized to the special event context were used. A
total of 518 completed surveys were used for the analysis. The results of a cluster analysis clearly identified four clusters (segments) according to their motivations: mass visitors, enthusiast visitors, activities visitors, and inactive visitors. This study provides future
academic research opportunities pertaining to the application of cultural event motivational scales. Event organizations can apply these results to the development of effective target market strategies.
The Effectiveness of Turmeric Extract (Curcuma domestica Val.) Against Fibroblast Cells in Socket Post Tooth Extraction
Authors: Lokanata Shieny , Sendyra Utama  , Mellisa Sim
Published: February 2022

Background. This study is an exploration to assess the potential of turmeric extract in the induction of fibroblast cell proliferation, where fibroblast cells are important cells in the process of repair and healing of wounds (socket wounds after tooth extraction). The antioxidants found in turmeric extract are believed to have potential in the initiation of growth factors which will then initiate the process of fibroblast cell activation, which in turn will play a role in wound healing.

Methods. The research design in this study is an experimental study with a post-test-only approach with a control group design. The research subjects in this study were rats (Rattus norvegicus) Wistar strain, male sex, age 8-12 weeks, and body weight between 150-250 grams. A total of 30 white rats were grouped into 5 groups. Data analysis was carried out with the help of SPSS 25 software. First, a univariate analysis was performed to present the mean number of fibroblast cells and the standard deviation. Furthermore, an analysis was carried out to assess the difference in the mean number of fibroblast cells between groups using the one-way ANOVA test.

Results. The results of the one-way ANOVA test showed that there were significant differences between the test groups. Giving 10% and 15% turmeric extract was seen to be more potent in the initiation of the number of fibroblast cells than the treatment group that received povidone-iodine.

Conclusion. Turmeric extract (Curcuma domestica Val.) concentration of 15% was the most effective concentration as an effort to increase the number of fibroblast cells after tooth extraction in Wistar rats.
Pengaruh Pendidikan dan Pendapatan Orang Tua Terhadap Tingkat Pendidikan Anak Keluarga Nelayan Tradisional Kecamatan Seruyan Hilir Kabupaten Seruyan
Authors: Widy Astuti  , Holten Sion  , Dehen Erang
Published: February 2022

This study was done at Seruyan Hilirsubdistrict of Seruyan regency to know whether there was an effect of parents ’education toward the level of children education in traditional fishermen family. Whether the parents’ income had an effect toward the level of the traditional fishermen’ children education and it was also to know the effect of parents’ education and parents’ income toward the level of children education in traditional fishermen of SeruyanHilirsubdistrict of Seruyan regency. The aim of this study was to know the effect of parents’ education and parents’ income toward the level of children education in traditional fishermen. The differences in the high level of education and the amount of parents’ income whether had an effect on their children’s education level.  The study was one of a quantitative research method. The instrument of data collection on this study used questionnaires. The data analysis applied descriptive presentation and regression multiple. The technique of sample collection used Proportionate Stratified Random Sampling technique because the stratified population. The amount of sample was determined by using Isaac and Michael tables. The result of analysis showed that the significance value on the result of SPSS 16.0, the effect of parents’ income toward the level of the traditional fishermen’ children education was 0.00 < 0.05, which was obviously variable X1 and X2 influenced the variable Y. The effect of parents’ income toward the children education got P value < 0.05 (0.00 < 0.05), the H0 rejected and H1accepted, it meant that there was a significant effect of fishermen income toward the level of the traditional fishermen’ children education. According to the result of computation apparently show that X1 and X2 had an effect toward Y. Based on the table R2 value (R square) was 0.676 or (67.6%). It showed that the contributory percentage of the independent variable effect (Fishermen’ education and income) toward dependent variable (the education of fishermen children) were 67.6%.
Efektivitas Hybrid Method (Metode TMa dan IK) pada Pembelajaran Daring untuk Mata Kuliah Statistik
Authors: Ani Mahrita  , Rakhman Fahmi Aulia , Meitiana Meitiana
Published: February 2022

The purpose of this study was to determine the effectiveness of the hybrid learning method (hybrid method) in economic and business statistics courses. The research method uses a mixed method between a quantitative approach and a qualitative approach using primary data. The data were tested using one of the different test analyzes, namely the Paired-Samples T Test. The findings indicate that an effective hybrid method is used for classes of economic statistics and business. Students prefer to use the IK method combined with the TMa (virtual face) method because they can understand the material quickly and the method is very similar to conventional methods. The theoretical implication of this research is that the hybrid method is better used for online learning methods than the IK method. Meanwhile, the practical implication in this study is that teachers can use the hybrid method for mathematics-based and calculation-based courses because the results of the study show that computation-based statistics courses can be effectively implemented using the hybrid method.
Plywood and Thermal Insulation Boards Based on the Modified Phenol Formaldehyde Binder
Authors:   Kostroma State University, Vakhnina Tatyana N. , Fedotov Aleksandr А. , Susoeva Irina V. , Rumyantseva Varvara E. ,   Ivanovo State Polytechnic University
Published: February 2022

The lower curing temperature of phenol formaldehyde binder allows reducing the costs of producing cellulose-containing materials, such as FSF plywood and thermal insulation composites made of plant wastes. However, the low-temperature production mode provides an insufficient degree of the phenol formaldehyde binder curing, leading to a decrease in water resistance of material based on the phenol formaldehyde binder. A modifier should be added to the phenol formaldehyde binder to reduce the amount of free hydroxymethylol groups in the cured binder and to form a stronger cross-linked structure in low-temperature curing conditions. Hydrogen peroxide was used as a phenol formaldehyde binder modifier in this research. The research results confirmed the hypothesis about the effect of hydrogen peroxide on the intensification of the structure formation of cellulose-containing materials based on the phenol formaldehyde binder. In conditions of low-temperature curing (120 °C for FSF plywood and 100 °C for thermal insulation composites made of plant wastes) modification of phenol formaldehyde binder with hydrogen peroxide reduced the binder curing time, the pressing time of FSF plywood, improved the physical and mechanical properties of FSF plywood and thermal insulation composites made of cellulose-containing filler (soft wood waste and irrecoverable flax spinning waste). When 1.0 % of hydrogen peroxide is added to the binder, the binder curing time reduces by 43.6 %. The addition of 1.0 % of hydrogen peroxide increased the shear strength of FSF plywood by 4.4 % and the static bending strength of plywood by 4.8 %. Modification of the binder with hydrogen peroxide increased water resistance of FSF plywood: plywood thickness swelling has been reduced by 2 % over 24 h in water. The strength of thermal insulation composites made of cellulose-containing wastes increased by 5.2 % with the addition of 1.0 % of hydrogen peroxide, thickness swelling decreased by 4.9 % over 24 h. The obtained research results allow recommending a modifying additive of hydrogen peroxide to phenol formaldehyde binder in an amount of 1.0 % of resin mass to increase the strength properties of FSF plywood and thermal insulation composites made of plant wastes. For citation: Vakhnina T.N., Fedotov A.A., Susoeva I.V., Rumyantseva V.E. Plywood and Thermal Insulation Boards Based on the Modified Phenol Formaldehyde Binder. Lesnoy Zhurnal [Russian Forestry Journal], 2022, no. 1, pp. 155–165. DOI: 10.37482/0536-1036-2022-1-155-165
Monitoring and Control of Paper Web Moisture
Authors:   Northern (Arctic) Federal University named after M.V. Lomonosov, Koryakovskaya Nataliya V. , Bederdinova Oksana I. ,   Branch of the Northern (Arctic) Federal University named after M.V. Lomonosov
Published: February 2022

Product quality is a key indicator of the positive outcome of pulp and paper production. Moisture content is one of the main paper quality characteristics. The moisture profile across the paper web width shows possible shortcomings of the process equipment which, if corrected, will improve the consumer properties of paper and enhance economic efficiency. The research aims to assess whether the moisture content measurement results meet the requirements of the process regulations in the steady-state and transient modes of paper machine operation as well as the uniformity of the moisture profile in the cross direction. Data from the scanning device at high and low resolution were processed using statistical methods in order to assess the quality of the automatic paper web moisture control system. It was determined that in the steady-state mode of paper machine operation the moisture content meets the requirements of the regulations with a confidence probability of 0.95; in the transient mode of operation it exceeds the upper limit by 6 %. It has been found that the automated moisture control system eliminates this fault in 340 s. The coefficient of variation was used as a criterion for evaluating the uniformity of the moisture profile across the paper web width. The hypothesis of a trend line in the moisture profile across the paper web width was confirmed and a trend line equation was obtained using regression analysis techniques. The moisture profile was modeled while eliminating the technological factor that systematically affects the uniformity. It is proven that the elimination of the fault will reduce the coefficient of variation and therefore improve the uniformity of the profile by 41.2 % in the steady-state mode of paper machine operation. In the transition mode of operation the moisture profile improves slightly. The proposed algorithm for studying the moisture profile of paper, its modeling after corrections of the control object can be used in systems for controlling the quality of paper in the transverse direction. For citation: Koryakovskaya N.V., Bederdinova O.I. Monitoring and Control of Paper Web Moisture. Lesnoy Zhurnal [Russian Forestry Journal], 2022, no. 1, pp. 188–204. DOI: 10.37482/0536-1036-2022-1-188-204
Effiziente Trocknung mit Induktion und Infrarot/Efficient drying with induction and infrared – Savings potential of alternative drying technologies for energy-efficient parts drying
Authors: Elserafi Ghada , von Hayn Adrian , Wolf Christian , Eggers Dörte , Weigold Matthias
Published: February 2022

In der metallverarbeitenden Industrie wächst mit steigenden Qualitätsanforderungen die Bedeutung der Bauteilreinigung und -trocknung in der Wertschöpfungskette. Vor dem Hintergrund steigender Energiepreise und klimapolitischer Ziele besteht die Motivation, die Energieeffizienz der Bauteiltrocknung zu steigern. Zu diesem Zweck sollen neben einem Referenzfall die Infrarot- und die Induktionstrocknung als alternative Trocknungstechnologien untersucht sowie deren Energieeinsparpotenzial ermittelt werden.

 

Higher quality requirements in the metal-processing industry are increasing the importance of processes such as parts cleaning and drying along the value chain. Rising energy prices and climate policy goals provide an incentive to improve energy efficiency in parts drying. This paper assesses infrared and induction drying as alternative drying technologies aginst a reference case, and determines the energy-saving potentials of these technologies.
Effizientes Schmieren der Spanbildungszone/Controlled use of cooling lubricants for tribological optimization of machining processes – Efficient lubrication of the chip formation zone
Authors: Zabel Andreas , Saelzer Jannis , Poll Gerhard , Pape Florian , Liu Haichao , Denkena Berend , Ellersiek Lars , Elgeti Stefanie , Lee Jaewook
Published: February 2022

Konventioneller Kühlschmierstoffeinsatz in der spanenden Fertigung führt zur Belastung von Umwelt und Gesundheit sowie zu erhöhten Fertigungskosten. Entsprechend weist der zielgerichtete Einsatz von Kühlschmierstoffen ein großes Potenzial zur nachhaltigen Gestaltung der Produktion auf, bringt jedoch auch zahlreiche technologische Herausforderungen mit sich. Durch die Kombination von experimenteller und simulativer Prozessanalyse lässt sich das Verhalten des Kühlschmierstoffs im Zerspanprozess verstehen und so ein gezielter Kühlschmierstoffeinsatz erreichen.

 

Conventional use of cutting fluids in machining processes leads to environmental pollution, causes health problems and increases production costs. Accordingly, controlled cutting fluid use shows a huge potential for a sustainable design of production. However, this entails technological challenges. A combination of experiments and simulations leads to a better understanding of the cutting fluid behavior and therefore, to a controlled cutting fluid application.
Benchmark von Lastprognosemethoden/Comparing forecasting methods systematically
Authors: Kaymakci Can , Walser Thilo , Sauer Alexander
Published: February 2022

Schwankende Strompreise erhöhen den Bedarf an Systemen zur elektrischen Lastprognose für Industrieunternehmen. Zur Bereitstellung eines Prognoseservice sind Kenntnisse über gängige Methoden, die spezifischen Anforderungen und die Einflussfaktoren erforderlich. Je nach Anwendung erzielen Prognosemethoden unterschiedliche Genauigkeiten. Dieser Beitrag beschreibt ein Vorgehen, das mit einem Benchmark die Genauigkeit einer Prognosemethode evaluiert, so dass diese einheitlich mit anderen Methoden verglichen werden kann.

 

Fluctuating electricity prices increase the need for electrical load forecasting systems for industrial companies. To provide a forecasting service, knowledge of common methods, the specific requirements and influencing factors is required. Depending on the application, forecasting methods achieve different prediction performance indicators. This contribution presents an approach that uses a benchmark to evaluate the accuracy of a forecasting method and compare it consistently with other methods.
Datengetriebene Qualitätsüberwachung beim Reiben/Data-driven quality monitoring in reaming
Authors: He Fuzhang , Xu Wei , Weigold Matthias
Published: February 2022

In diesem Beitrag wird die Entwicklung datengetriebener Modelle zur Vorhersage des Mittenverlaufs bei der Bohrungsfeinbearbeitung beschrieben. Dabei werden der Kraftzustand der Reibahle beim Reibprozess mit gezielt eingebrachtem Achsversatz und die daraus resultierende Bohrungsqualität untersucht. Es werden lineare Beziehungen zwischen mehreren Signalen und den Bohrungsmittenverläufen gefunden. Das entwickelte lineare Regressionsmodell kann den Bohrungsmittenverlauf mit hoher Effizienz und Genauigkeit prognostizieren.

 

This paper describes the development of data-driven models for predicting the hole straightness during fine bore machining. It investigates the force state of the reamer during the reaming process with specifically introduced axis misalignment and the resulting bore quality. Linear relationships are found between several signals and the hole straightness. The developed linear regression model can be used to predict the hole straightness with high efficiency and accuracy.
Anwendungen und Geschäftsmodelle mit Gaia-X/Applications and business models with Gaia-X – EuProGiant – From use case to business case with Gaia-X in the Industrie 4.0 domain
Authors: Weber Markus , Brockhaus Benjamin , Hoffmann Felix , Ranzau Heiko , Weigold Matthias , Dumss Stefan , Schwaiger Clemens , Bleicher Friedrich
Published: February 2022

Derzeit entwickelt eine Vielzahl von geförderten Konsortien Anwendungsfälle im Gaia-X-Kontext. Sie sind charakterisiert durch den Nutzen des unternehmensübergreifenden Datenaustauschs. Dennoch wird ein Großteil der Vorhaben keiner bewussten Kosten-Nutzen-Analyse unterzogen. Bestehende Vorgehensmodelle für datenbasierte Geschäftsmodelle berücksichtigen die Interoperabilität nicht. Es fehlt eine ganzheitliche Beschreibung, wie Anwendungsfälle in wettbewerbsfähige Geschäftsmodelle überführt werden.

 

Currently, a number of funded consortia are developing use cases in the Gaia-X context. They are characterised by the benefits of cross-company data exchange. Nevertheless, the majority of the projects are not subjected to a conscious cost-benefit analysis. Existing process models for data-based business models do not take interoperability into account. There is no holistic description of how use cases are transformed into competitive business models.
Cretaceous stage boundaries - Introduction
Authors: Birkelund Tove
Published: February 2022

In October 1983, the Subcommission on Cre­taceous Stratigraphy arranged a symposium on Cretaceous Stage Boundaries in Copenhagen to fulfil the Subcommission's primary responsibility: the defining of stage boundaries...
Glycosylated coumarins, flavonoids, lignans and phenylpropanoids from Wikstroemia nutans and their biological activities
Authors: Wu Meifang , Su Xiangdong , Wu Yichuang , Luo Yuanjing , Guo Ying , Xue Yongbo
Published: February 2022

Wikstroemia nutans Champ. ex Benth., a traditional herbal medicine collected at the Lingnan region of China, was chemically investigated. A new biscoumarin glucoside, wikstronutin (1), along with three known bis- and tricoumarin glucosides (2–4), two flavonoid glycosides (5–6), and eleven lignan glucosides (7–17) were isolated from the stems and roots of W. nutans. The new structure including its absolute configuration was elucidated based on a combination of 1D and 2D NMR, UV, IR, HRESIMS spectroscopic data, as well as chemical transformation. Compounds 1–17 were first isolated from the plant species W. nutans, while compounds 1–3, 8, and 11 were reported from the genus Wikstroemia for the first time. All co-isolates were evaluated for their in vitro inhibitory effects on nitric oxide (NO) production induced by lipopolysaccharide (LPS) in murine RAW264.7 macrophage cells. The antibacterial activity of the selected compounds was also tested. Our work enriches the structure diversity of the secondary metabolites from the genus Wikstroemia.
RESEARCH ON WOOD DEFECTS CLASSIFICATION BASED ON DEEP LEARNING
Authors: LING JIAXIN , XIE YONGHUA
Published: February 2022

Whereas the traditional manual detection method of wood defects is problematic due time-consuming, low efficiency and low accuracy, an derived model based on ResNet-v2 was constructed. The new derived model can accurately point out the types of defects such as wormhole, live joint and dead joint on the surface of plate, improve the accuracy ofclassification, and greatly reduce the labor force. Compared with the traditional convolutional neural network, ResNet-v2 derived model has better recognition effect and stronger generalization ability. The experimental results show that the classification accuracy of ResNet-v2 derived network model based on different number of layers is more than 80%, and the classification accuracy of ResNet-v2 derived model can reach 97.27%.
An Empirical Background Model for the NICER X-Ray Timing Instrument
Authors: Remillard Ronald A. , Loewenstein Michael , Steiner James F. , Prigozhin Gregory Y. , LaMarr Beverly , Enoto Teruaki , Gendreau Keith C. , Arzoumanian Zaven , Markwardt Craig , Basak Arkadip , Stevens Abigail L. , Ray Paul S. , Altamirano Diego , Buisson Douglas J. K.
Published: February 2022

Neutron Star Interior Composition Explorer has a comparatively low background rate, but it is highly variable, and its spectrum must be predicted using measurements unaffected by the science target. We describe an empirical, three-parameter model based on observations of seven pointing directions that are void of detectable sources. Two model parameters track different types of background events, while the third is used to predict a low-energy excess tied to observations conducted in sunlight. An examination of 3556 good time intervals (GTIs), averaging 570 s, yields a median rate (0.4–12 keV; 50 detectors) of 0.87 c s−1, but in 5% (1%) of cases, the rate exceeds 10 (300) c s−1. Model residuals persist at 20%–30% of the initial rate for the brightest GTIs, implying one or more missing model parameters. Filtering criteria are given to flag GTIs likely to have unsatisfactory background predictions. With such filtering, we estimate a detection limit, 1.20 c s−1 (3σ, single GTI) at 0.4–12 keV, equivalent to 3.6 × 10−12 erg cm−2 s−1 for a Crab-like spectrum. The corresponding limit for soft X-ray sources is 0.51 c s−1 at 0.3–2.0 keV, or 4.3 × 10−13 erg cm−2 s−1 for a 100 eV blackbody. These limits would be four times lower if exploratory GTIs accumulate 10 ks of data after filtering at the level prescribed for faint sources. Such filtering selects background GTIs 85% of the time. An application of the model to a 1 s timescale makes it possible to distinguish source flares from possible surges in the background.
Pre-explosive Accretion and Simmering Phases of SNe Ia
Authors: Piersanti Luciano , Bravo Eduardo , Straniero Oscar , Cristallo Sergio , Domínguez Inmaculada
Published: February 2022

In accreting white dwarfs (WDs) approaching the Chandrasekhar limit, hydrostatic carbon burning precedes the dynamical breakout. During this simmering phase, e-captures are energetically favored in the central region of the star, while β-decay are favored more outside, and the two zones are connected by a growing convective instability. We analyze the interplay between weak interactions and convection, the so-called convective URCA process, during the simmering phase of Type Ia supernovae (SNe Ia) progenitors and its effects on the physical and chemical properties at the explosion epoch. At variance with previous studies, we find that the convective core powered by the carbon burning remains confined within the 21(Ne,F) URCA shell. As a result, a much larger amount of carbon has to be consumed before the explosion that eventually occurs at larger density than previously estimated. In addition, we find that the extension of the convective core and its average neutronization depend on the the WD progenitor’s initial metallicity. For the average neutronization in the convective core at the explosion epoch, we obtain

η

¯

exp

=
(
1.094
±
0.143
)

× 10−3 + (9.168 ± 0.677) × 10−2 × Z. Outside the convective core, the neutronization is instead determined by the initial amount of C + N + O in the progenitor star. Since S, Ca, Cr, and Mn, the elements usually exploited to evaluate the pre-explosive neutronization, are mainly produced outside the heavily neutronized core, the problem of too high metallicity estimated for the progenitors of the historical Tycho and Kepler SNe Ia remains unsolved.
Intraday Optical Multiband Observation of BL Lacertae
Authors: Fang Yue , Zhang Yan , Chen Qihang , Wu Jianghua
Published: February 2022

We observed BL Lac in the B, V, R, and I bands with an 85 cm telescope on nine nights from 2019 September 18 to 2019 December 6. More than 2300 data points were collected. All intraday light curves were examined for variations by using the most reliable power-enhanced F-test and the ANOVA test, and intraday variability was found on five nights. Thanks to our high precision and high temporal resolution data, two key discoveries were made in the following analyses. (1) In addition to the strong bluer-when-brighter behavior on most nights, we observed a color reversal that is rarely found in BL Lac objects. This indicates that there are two different energy distributions of injected electrons on this night. (2) The object traced clockwise loops on the color–magnitude diagrams on one night. These are the first intraday spectral hysteresis loops reported in the optical bands in this object, suggesting interband time lags. We estimated the interband lags by using the ZDCF, ICCF, and JAVELIN, and found the variations in the V and R band lagged that in the B band by about 16 and 18 minutes, respectively. Such optical time lags are expected if the acceleration timescale is much shorter than the cooling timescale.
Carbon Monoxide Emission and Spectra Prior to Dust Formation of the Nova V606 Vulpeculae
Authors: Rudy Richard J. , Bayless Amanda J. , Subasavage John P.
Published: February 2022

Visible and infrared spectra, from two, widely separated epochs, are presented for the nova V606 Vulpeculae. The first, acquired 7 days after the nova reached maximum light, displayed emission from carbon monoxide plus a wealth of low excitation atomic lines characterisic of an Fe ii-type novae early in its spectral development. The second, from 80 days later and after additional mass ejection, provided a spectral snapshot of a nova just prior to dust formation. It also was dominated by emission lines of mostly neutral atomic species, many of which included P-Cygni components. However, no spectral features from any molecules were detected, leaving in question what constituted the building blocks of the dust grains that formed shortly thereafter.
Spatial Distribution and Thermal Diversity of Surface Volatile Cold Traps at the Lunar Poles
Authors: Landis Margaret E. , Hayne Paul O. , Williams Jean-Pierre , Greenhagen Benjamin T. , Paige David A.
Published: February 2022

The polar regions of the Moon host some of the most extreme low temperatures in the inner solar system due to its low obliquity, lack of atmosphere, and topographic relief. Some of these regions are already confirmed to host water ice. Proposed sources of water and other volatiles include lunar volcanic outgassing, solar wind, and comet impacts. Each of these possible sources would carry a potentially identifiable compositional signature beyond water. Determining the dominant sources of lunar volatiles, therefore, requires assessing the long-term thermal stability of an array of compounds. We present results of mapping the surface thermal stability locations of multiple key volatiles, including water, from the Diviner Lunar Radiometer data from 60° to 90° latitude in both hemispheres. We find the annual maximum temperature for each pixel of interest in the map (∼300 m) to determine which volatiles of interest would be stable there. We report on the thermal stability area of each volatile, as well as the geologic context in some cases. We find that while the thermal stability area for volatiles is larger in the south pole generally, both the north pole and south pole host areas where potential tracer volatiles from lunar volcanism, solar wind, and cometary impacts would be thermally stable for billions of years if such volatiles were ever delivered. We find several areas equatorward of ∼80° on the lunar nearside that could host water ice, where future missions could potentially access volatile deposits in order to place constraints on water delivery to the Moon.
Immunogenesis in patients with medium and severe coronavirus infection – dynamics in different age groups
Authors: Atanasov Petar , Ivanova Stefka , Kobakova Yozlem , Moneva-Sakelarieva Maria , Obreshkova Danka , Petkova Valentina , Laleva-Jordanova Pavlina
Published: February 2022

The results of a one-year prospective study, during which the process of immunogenesis in patients over 18 years of age with moderate and severe coronavirus infection was monitored and analyzed in clinical and paraclinical (clinical laboratory) aspects, are summarized and presented.

The study included 2683 patients, all treated in the Clinic of Internal Diseases at the University Multiprofile Hospital for Active Treatment and Emergency Medicine “N. I. Pirogov” EAD, Sofia for the period from April 2020 to December 2020. Patients were followed for one year after recovering from moderate to severe coronavirus infection. Patients are grouped into four age categories as follows: 18–45 years; 46–65 years; 66–80 years and over 80 years.

The results of our study show that during the study period in 97% of patients the level of anti-SARS-CoV2, rose and in the remaining three percent it was flat or followed by subsequent waning (in less than 1% of patients), but does not reach critically low levels (i. e. below the positivity conditional threshold). The level of IgG reached a peak and then waned, but on the other hand, as mentioned above, the amount of Ig-Total tested shows a significant increase. This trend is observed in all age groups, with a difference in the level of IgG and Ig-Total depending on age.

The results of the additional screening in the target period in terms of virulence and virus segregation, categorically rule out the suspicion of the presence of “silent spreader”. During the follow-up period, no patients were re-hospitalized due to recurrence of Coronavirus infection (re-infection and illness).
Global well-posedness of the three-dimensional viscous primitive equations with bounded delays
Authors: Fan Zhenduo , Liu Wenjun , Chen Shengqian
Published: February 2022

The study of delay is one of the important problems in fluid mechanics. When we attempt to control the fluid in some sense, this delay may occur by applying a force that takes into account not only the current state of the system, but also the known history. In this paper, the three-dimensional viscous primitive equations with bounded delays are considered. We prove the existence of weak and strong solutions, and obtain the uniqueness of the strong solution. We also obtain the exponential decay behavior of the weak solutions and get some higher order estimates for strong solution. Under appropriate assumptions, we prove that the time-dependent weak solutions converge exponentially to the unique stationary solution.