bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Condensor Tube Thinning Distribution and their Failure Modes Based on Eddy Current Data
Authors: Rozaq Fatchur , Mubarok Fahmi
Published: October 2020

The condenser in Steam Power Plant is critical equipment to convert steam from the steam output of the low-pressure turbine to become liquid. Thus, maintaining the reliability of the condenser will prevent progressive failure to other equipment. One of the methods to investigate their reliability is using eddy current test on the pure titanium grade 2 condenser tubes to measure their wall thinning level in comparison to their original thickness of 0.5 mm. Based on the measurement, any tubes having 0.05 mm in thickness (wall thinning level of 90%) and below are plugged to prevent potential leakage. In 2018, the condenser in unit 2 of Labuan steam power plant in Banten province, Indonesia was tested by eddy current on all tubes. Results indicate that condenser tube with wall tube thinning ≥ 90% were totaling 733 tubes (± 5% of the total tubes). The location and distribution of the highest probability of tubes leaking due to wall thinning problems were generated after statistical analysis. The data obtained in this unit can be used as a reference for maintenance strategy on other units working in the same condition. In order to understand the tube thinning mechanism, one tube at A-side inlet that has 97% of wall thinning level was cut and submitted to metallography and hardness testing. The results point out that no crack or corrosion product was found and the microstructure of the tubes did not alter as compared to their original tubes. This indicates that pure erosion mechanism takes place causing the thinning of the tubes.
Carbon and Nitrogen Composition for Non-Precious Metal Catalyst to Physical Characterization and Electrochemical Properties
Authors: Setyowati Vuri Ayu , Susanti Diah , Noerochim Lukman , Widodo Eriek Wahyu Restu , Sulaiman Mohammad Yusuf
Published: October 2020

This paper investigates the physical properties and electrochemical properties of the innovative non-precious metal catalyst using different carbon types. The cathode catalyst for PEMFC (Proton Exchange Membrane Fuel Cell) is an important part of fuel cell because the reaction of the cathode is three times lower than the anode. Otherwise, the high cost of Pt/C catalyst for cathode needs to be replaced using low-cost material. Therefore, this research fabricated Pt free catalyst. FeCl3.6H2O was used as a metal precursor. Urea and PVP as a nitrogen (N) source were mixed with carbon. The variations of carbon are Graphite (Gt), Charcoal Active (CA), and Calcined Petroleum Coke (CPC). As prepared catalysts, were noted as Fe/N-Gt, Fe/N-CA, and Fe/N-CPC. Catalysts without nitrogen addition also were synthesized such as Fe-Gt, Fe-CA, and Fe-CPC for comparison. The electrochemical properties can be evaluated form Cycle Voltammograms (CV) curve. Graphite supported catalyst has anodic and cathodic peak otherwise has the lowest capacity. It means that the redox reaction occurs during CV measurement for Fe/N-Gt and Fe-Gt catalyst. Nitrogen addition of graphite supported catalyst has a higher current density than Fe-Gt catalyst. The morphology of the catalyst was identified by Scanning Electron Microscope (SEM). Different particle shape for carbon types can be observed by SEM image of obtained catalyst. Energy Dispersive X-Ray EDX to identify the chemical composition. Nitrogen-doped carbon caused the formation of Fe2O3 and it was determined by X-ray diffraction (XRD).
Effect of Ground Glass Particles on the Water Absorption and Tensile Properties of Epoxy
Authors: Sugiman Sugiman , Setyawan Paryanto Dwi , Salman Salman
Published: October 2020

The paper presents the effect of ground glass (GG) particles on the water absorption and tensile properties of epoxy. The GG particles contents in the epoxy were 0, 5, 10 and 15% (by volume). The results showed that the GG particles in the epoxy changed the water absorption behaviour from Fickian to non-Fickian. At the GG particles content of 15%, the equilibrium water uptake increased almost double, but the diffusion rate decreased by about 85% compared to the unfilled epoxy. In dry condition, the tensile strength tended to decrease with increasing the GG particles content, by about 11% at the GG content of 15% compared to that of the unfilled epoxy; however, the elastic modulus tended to increase linearly with the GG content. In wet condition, up to the GG content of 10%, the tensile strength decreased by about 77% compared to that of the unfilled epoxy; however, at the GG particles content of 15%, the tensile properties were improved.
The Effect of Acidity and Rotation Speed in Titanium Dioxide Synthesize Process
Authors: Putra Andi Erwin E. , Arsyad Hairul , Amaliyah Novriany , Prabowo Humam Eddy , Hayat Azwar
Published: October 2020

The aims of this study are to analyze the effect of acidity and rotational speed in the synthesis of TiO2 using the sol-gel method and to analyze the morphology of synthesized TiO2 nanoparticles and commercial TiO2 using XRD to produce semiconductors for Dye-Sensitized Solar Cell (DSSC) applications. The sol-gel method was used to synthesize TiO2 Nanoparticles. Titanium tetra-isopropoxide (TTIP) was used as a precursor with the variable of the magnetic stirrer rotation speed of 500, 1000 and 1500 rpm. Acidification was achieved by adding acetic acid to Sol-gel solution to produce a pH number of 1, 2, and 3. Nanomaterial was observed with an optical microscope and X-ray Powder Diffraction (X-RD) to determine the morphology and phase of TiO2 crystalline. The results showed that the rotational speed and acidity level of the Sol-gel solution ware played an important role to get the best form of a nanoparticle. At a rotation speed of 1500 rpm with pH 3 and 1000 rpm with pH 2 ware shown characteristics similar to commercial TiO2. In addition to that, the results of XRD characterization of synthesized TiO2 was shown a crystal phase of anatase structure with 18,046 nm crystal size compared to commercial TiO2 with anatase structure and crystal size of 15,554 nm.
Tensile, Flexural and Water Absorption Properties of Bamboo Fiber/Unsaturated Polyester Composites: Effect of Calcium Carbonate Content
Authors: Sugiman Sugiman , Martino Atin , Setyawan Paryanto Dwi , Anshari Buan
Published: October 2020

The paper presents the effect of CaCO3 content on the tensile, flexural and water absorption properties of bamboo fiber/polystyrene-modified unsaturated polyester composites. Two volume fractions of bamboo fibers had been used with the CaCO3 content varied from 2.5 to 10 (wt%). The tensile and flexural properties were used to characterize the composites. In addition, the water absorption and its effect of the flexural properties had also been conducted. The results showed that at the bamboo content of 30%, adding CaCO3 up to 10wt% tended to decrease the tensile strength and elastic modulus of bamboo fiber/modified unsaturated polyester composites up to 27% and 4%, respectively; however, at the bamboo content of 20%, its effect was not significant for both the tensile strength and the elastic modulus. Adding CaCO3 seemed not to have a significant effect for both the flexural strength and modulus. Having exposed in distilled water, CaCO3 did not significantly affect the water uptakes and the flexural properties of bamboo fiber/modified unsaturated polyester composites; however, the flexural strength and modulus significantly decreased in the ranges of 24 - 45% and 36 - 43%, respectively, compared to those in dry condition.
Institutional Challenges and Solutions to Evidence-Based, Patient-Centered Practice: Implementing ICU Diaries
Authors: Rogan Julie , Zielke Megan , Drumright Kelly , Boehm Leanne M.
Published: October 2020

Background

Although diaries are an evidence-based practice that improves the quality of life of patients in an intensive care unit and their loved ones, centers in the United States are struggling to successfully implement diary programs in intensive care units. Currently, few published recommendations address how to facilitate implementation of a diary program, and how to effectively sustain it, in an intensive care unit.

Objectives

To discuss challenges with implementing diary programs in intensive care units at 2 institutions in the United States, and to identify solutions that were operationalized to overcome these perceived difficulties.

Methods

The teams from the 2 institutions identified local barriers to implementing diaries in their intensive care units. Both groups developed standard operating procedures that outlined the execution and evaluation phases of their implementation projects.

Results

Barriers to implementation include liability and patient privacy, diary program development, and implementation and sustainability concerns. Various strategies can help maintain clinical and family member engagement.

Conclusion

Through a team’s sustained dedication and a diligent assessment of perceived obstacles, a diary program can indeed be implemented within an intensive care unit.
Factors Associated With the Rate of Sepsis After Surgery
Authors: Flanagan Jane M. , Read Catherine , Shindul-Rothschild Judith
Published: October 2020

Background

Sepsis is a critical illness that requires early detection and intervention to prevent disability and/or death.

Objective

To analyze the association between various hospital-related factors and rates of sepsis after surgery in Massachusetts hospitals.

Methods

The sample consisted of 53 hospitals with intensive or critical care units and 25 hospitals with step-down units. Hospital characteristics, staffing levels, and health care–acquired conditions were examined using publicly available data. Analysis of variance and linear regression were performed to explore the relationship between nurse and physician staffing levels and sepsis rates.

Results

Sepsis rates were significantly lower when nurses cared for fewer patients (P < .001) and when intensivist hours were greater (P = .03). Linear regression for nurse staffing revealed that higher rates of catheter-associated urinary tract infection (P = .001) and higher numbers of step-down patients cared for by nurses (P = .001) were associated with a significantly higher rate of sepsis (P < .001). Linear regression for physician staffing revealed that higher rates of catheter-associated urinary tract infection (P < .001) and wound dehiscence after surgery (P < .001), greater hospitalist hours (P = .001), and greater physician hours (P = .05) were associated with a significantly higher sepsis rate, while greater intensivist hours were associated with a lower sepsis rate (P = .002).

Conclusion

In this study, greater nurse staffing and intensivist hours were associated with significantly lower rates of sepsis, whereas greater physician staffing and hospitalist hours were associated with significantly higher rates. Further research is needed to understand the roles of the various types of providers and the reasons for their differing effects on sepsis rates.
Densities in certain three-way prime number races
Authors: Lin Jiawei , Martin Greg
Published: October 2020

Let

$a_1$
,

$a_2$
, and

$a_3$
be distinct reduced residues modulo q satisfying the congruences

$a_1^2 \equiv a_2^2 \equiv a_3^2 \ (\mathrm{mod}\ q)$
. We conditionally derive an asymptotic formula, with an error term that has a power savings in q, for the logarithmic density of the set of real numbers x for which

$\pi (x;q,a_1)> \pi (x;q,a_2) > \pi (x;q,a_3)$
. The relationship among the

$a_i$
allows us to normalize the error terms for the

$\pi (x;q,a_i)$
in an atypical way that creates mutual independence among their distributions, and also allows for a proof technique that uses only elementary tools from probability.
Rezensionen
Authors: Zeytuncu Yunus E.
Published: October 2020

Rezension zu:
J.-F. Emmenegger, D.L. Chable, H.A. Nour Eldin, H. Knolle:
Sraffa and Leontief Revisited. Mathematical Methods and Models of a Circular Economy
. 529 Seiten, CHF 160.00. De Gruyter, 2020; ISBN 978-3-11-063042-8.
Evolutionary transformation of the journal. Part 7
Authors: Kokowski Michał
Published: October 2020

The article outlines the seventh phase of the development of the journal Studia Historiae Scientiarum (previous name Prace Komisji Historii Nauki PAU / Proceedings of the PAU Commission on the History of Science). The information is provided on the following matters: the realization of the ministerial program “Support for scientific journals 2019–2020”, the evaluation of the journal in “ICI Master Journal List 2018” (published at the end of 2019), in Scimago Journal Ranks 2019 (published on 11 June 2020), in CWTS Journal Indicators (published on the beginning of June 2020) and in Scopus (published on 6 June 2020), a systemic obstacle in the further developing of the journal related to the journal’s underrated rating in the “List of journals of the Ministry of Science and Higher Education of the Polish Republic 2019” (published on 31 July 2019 and 18 December 2020), the indexation of the journal in the Scopus database (from September 2019), the works on updating the journal’s website in OJS (3.1.2.), and the number of foreign authors and the number of reviewers of the current volume of the journal.
Between pottery and politics? “Slavic archaeology” in communist Poland and East Germany and its interrelations with politics and ideology. A biographical-comparative approach
Authors: Kluger Anne
Published: October 2020

Despite the previous overview studies on Polish and East German archaeology and historiography after 1945, further analyses of the relationship between science and politics as well as of the inner-disciplinary processes and discourses in the “Cold War” period are still needed. This applies in particular to the research field of “Slavic archaeology”, the archaeological and historiographical research on the “Slavs” in prehistorical and early medieval times. With regard to recent demands for an extended and more dynamic understanding of science and new methodological approaches in the history of science (and of archaeology as well), this paper focuses on two leading figures of “Slavic archaeology”, Witold Hensel (PPR) and Joachim Herrmann (GDR), as case studies to provide more insights into this discipline.   Analysing the course of Hensel’s and Herrmann’s careers and of their way to the “Slavs” as one of their main research interests, their administrative functions as institutional directors and the central narratives of their publications on the early “Slavs”, provides the opportunity to profoundly dissect the interrelations between scholarly work, politics, and ideology in this field of research. The comparative approach also makes it possible to identify parallel tendencies in Eastern German and Polish “Slavic archaeology” as well as specific national conditions and developments. On the example of Hensel and Herrmann, it becomes clear that the implemented biographical-comparative perspective is fruitful and can be used for further research in the history of science.
Stypendyści Akademii Umiejętności w Krakowie i Uniwersytetu Jagiellońskiego na Uniwersytecie Georga-Augusta w Getyndze w latach 1891–1914. Matematyka
Authors: Ciesielska Danuta
Published: October 2020

Podstawowym celem projektu badawczego jest ocena wpływu studiów i pobytów naukowych polskich uczonych w światowym centrum matematyki, jakim był Uniwersytet w Getyndze, na rozwój ich akademickich karier. W tym artykule skupiono się tylko na matematykach, którzy byli stypendystami Akademii Umiejętności w Krakowie i Uniwersytetu  agiellońskiego. Ramy czasowe artykułu wyznaczyły daty pobytów pierwszego i ostatniego stypendysty w Getyndze. Przedstawiono krótko informacje o Fundacji im. Osławskiego, Funduszu im. Dra Władysława Kretkowskiego oraz Funduszu im. Kazimierza Klimowskiego oraz o losach stypendystów: Leona Chwistka, Antoniego Hoborskiego, Stanisława Kępińskiego, Stanisława Ruziewicza, Włodzimierza Stożka, Władysława Ślebodzińskiego i Franciszka Włodarskiego. Przywołane w artykule dokumenty pochodzące z archiwów tych fundacji i korespondencji nie były wcześniej publikowane. Podjęto probę oceny pobudek, które skłoniły młodych polskich uczonych do wyboru Getyngi jako miejsca zagranicznych studiów. Oceniono wpływ odbytych w Getyndze studiów na tematyką prowadzonych przez nich badań naukowych. Przed główną częścią artykułu krótko naszkicowano historię matematyków, matematyki i  kształcenia matematycznego w Getyndze w okresie 1885–1914. Fellows of the Academy of Arts and Sciences in Kraków and the Jagiellonian University in Georg-August Univeristy in Göttingen in the period 1891–1914. Mathematics The main goal of the research project is an evaluation of the impact of studies and scientific visits of Polish scientists in the world mathematical centre, which was Georg-August Univeristy in Göttingen, on their careers. The results presented in this report focuses on the scholarship holders of the Academy of Arts and Sciences in Kraków and the Jagiellonian University. A time-frame for the article are the dates of visit of the first and the last scholarship holders in Göttingen. A brief history of the Osławski’s Fund, Dr. Władysław Kretkowski’s and Kazimierz Klimowski’s Fund and the fellows – mathematicians: Leon Chwistek, Antoni Hoborski, Stanisław Kępiński, Stanisław Ruziewicz, Włodzimierz Stożek, Władysław Ślebodziński and Franciszek Włodarski are presented in the article. The archival documents cited in the article are presented in print for the first time. An analysis of the reasons that urged young Polish scholars to choose Göttingen for their foreign studies is given. An evaluation of the impact of their studies in Göttingen on their future research areas was done. An introduction to the article is a very brief history of mathematicians, mathematics and mathematical education in Georg-August University in Göttingen in the period 1885–1914.
Leonhardi Euleri Opera Omnia IVA/7: Commercium Epistolicum (Euler – French speaking scientists from Switzerland). Editors: S. Bodenmann, V. Hug, M. Ilić, A. Kleinert. Basel: Birkhäuser, 2017, XII+621 pages – A volume overview
Authors: Denkowski Maciej P.
Published: October 2020

We give an overview of the seventh volume of series IVA of the Birkhäuser edition of Leonhard Euler’s complete works and correspondence. This volume contains Euler’s correspondence in French with ten of his Swiss countrymen: Louis Bertrand, Charles Bonnet, Marc-Michel Bousquet, Jean de Castillon, Gabriel Cramer, Philibert Cramer, Gaspard Cuentz, Albrecht von Haller, Georges-Louis Lesage and Johan Caspar Wettstein. A letter of the German Johann Michael von Loën to Euler, mentioned in the Euler-Bertrand letter exchange is also included as well as the recently rediscovered first letter of Euler to Jean le Rond d’Alembert in supplement. The letters cover a large range of topics also outside Euler’s mathematical and physical interests giving a new insight into his non-scientific activities, and thus casting also a new light on this great scientist as a person.
Sprawozdanie Komisji Historii Nauki PAU w roku 2019/2020
Authors: Kokowski Michał
Published: October 2020

Omówiona została działalność Komisji Historii Nauki PAU w roku 2019/2020. Przedstawiono spisy: posiedzeń naukowych, konferencji i sesji naukowych oraz nowych publikacji. The report on the activities of the PASS Commission on the History of Science in 2019/2020 The report discusses the activities of the Commission on the History of Science of the Polish Academy of Arts and Sciences in 2019/2020. It presents the lists of scientific meetings, conferences, symposia, and new publications.
Applicable posssibility of advanced technologies and equipment in surface mines of Vietnam
Authors: Tran Hieu Quang , Bui Nam Xuan , Nguyen Hoang , Nguyen Tuan Anh , Nguyen Long Quoc ,   Department of Surface Mining, Mining Faculty, Hanoi University of Mining and Geology, Vietnam  Faculty of Geomatics and Land Administration, Hanoi University of Mining and Geology, Vietnam
Published: October 2020

Vietnam has abundant and diversified mineral resources with more than 5, 000 mines of 60 discovered and exploited minerals. Besides of surface coal mines mainly located in Quang Ninh, the types of minerals being exploited by surface mining method consist of metal ores (iron, titanium, manganese, gold, zinc, copper, antimony) and non - metallic ores, and construction materials (stone, sand, gravel, etc.). In the paper, authors researched and proposed the advanced technologies and equipment based on Industry 4.0, that can apply effectively for surface mines in Vietnam in order to ensure safety and enhance surface mining effect.
Mining technology for exploiting deep open-pit mines in Vietnam
Authors: Do Tuoc Ngoc , Ho Giao Si , Tran Xuan Manh , Doan Thanh Van , Bui Nam Duy ,   Institute of Mining Science and Technology - Vinacomin, Vietnam  Mining Science and Technology Association, Vietnam
Published: October 2020

Vietnam's open-pit mines have been exploited deeper and deeper. At the end of exploitation, the bottom of the mine is 300÷400 m lower than the sea level. Mining in the deep layers will face a series of difficulties such as seasonal exploitation, high pit bank, large amount of water mud, limited field size, increasing intensity of exploitation on each layer and the whole shore, conditions. The microclimate changes in an unfavorable direction at the bottom of the mine, etc. On the basis of the analysis of the characteristics of the deep layers, experience in exploiting at home and abroad, the article proposes a number of mining technology solutions. Appropriate exploitation at deep open mines such as: Exploiting convex banks, using transport equipment operating on high slope, water mud treatment technology and deep digging seasonally for safe exploitation to ensure mine output, efficiency and maximum resource recovery.
Developing a mathematical model to optimize long - term quarrying planing for limestone quarries producing cement in Vietnam
Authors: Tran Bao Dinh , Vu Trong Dinh , Pham Viet Van , Nguyen Tuan Anh , Nguyen An Dinh , Le Giang Huong Thi ,   Department of Surface Mining, Mining Faculty, Hanoi University of Mining and Geology, Vietnam  TU Bergakademie Freiberg, 0 Freiberg, Germany  Faculty of General Education, Hanoi University of Mining and Geology, Hanoi, Vietnam
Published: October 2020

Mathematical model researches in optimizing long - term quarrying planning for limestone quarries supplying to the cememt factories have not been popular in Vietnam. The paper shows a mathematical model based on Mixed Integer Linear Programming as well as effective method to cope with long - term quarrying planning for the quarries. Techniques grouping block cells into a mining room and decision variable elimination techniques was employed to reduce the size of the problem. This enable to form an optimal method with proper time. The model and the algorithm are an effective tool to conduct a long - term planning for the quarries, enabling to supply the quatity and quality enough of raw materials to the factory. The model was demonstrated and practically evaluated when being applied and compared with one of the popularly commercial sofwares in mine schedule, GEOVIA Mines.
Determining the ability to receive rock of waste dumps when exploiting a group of open-pit coal mines
Authors: Do Hoan Ngoc , Igorevic Fomin Sergey ,   Department of Surface Mining, Mining Faculty, Hanoi University of Mining and Geology, Vietnam  Faculty of Mining, Saint Petersburg Mining University, Russia
Published: October 2020

In the process of developing the general exploitation and disposal plan for the Deonai, CocSau and Caoson coal mines, use should be taken into account the maximum internal disposal sites to reduce the transport supply and facilitate the environmental restoration work after exploitation. However, in the geological conditions of these coal mines, in order to ensure the space to exploit and make full use of useful minerals, it is necessary to calculate the economic efficiency when building the exploitation and disposal plan. The content of the article is based on the criteria of optimum transportation flows of rock in the arrangement of waste disposal when exploiting a group of three open-pit mines Deo Nai, Coc Sau and Cao Son.
Modelisation of fractured rock mass for open pit mining in Vietnam
Authors: Nguyen Tuan Anh , Pham Viet Van , Bui Nam Xuan , Le Hoa Thu Thi , Le Hai Thi , Tran Bao Dinh , . Hanh Minh Thi Le ,   Mining Faculty, Hanoi University of Mining and Geology, Vietnam  Warsaw University of Life Sciences, Poland
Published: October 2020

In open pit mining, besides the value of the minerals obtained, the cost of waste rock removal determines the efficiency of the mining operation. The paper introduces the rock mass data processing method and modelisation of fractured rock mass to serve the optimal calculation of technological stages in mining. This code is a discrete fracture network (DFN) code that couple geometrical block system construction based on modelisation stochastic with RESOBLOK simulations. The method of three-dimensional modeling (3D) of the fractured rock mass in the quarry is based on the rock mass data, the geometrical parameters of the open pit mine. From there, the rock mass simulation models were used in the analysis of the stability analysis of open pit benches, the optimization of the blast design parameters at overburden benches, project construction materials, and technology projects for block stone extraction. An application in some open pit mines such as quarries of Vietnam is presented.
Study on Ability of Ulstrasonic in Determining Joints in Dimension Stone Blocks
Authors: Pham Viet Van , Nguyen Tuan Anh , Pham Hoa Van , Tran Bao Dinh , Nguyen Phong Duyen ,   Faculty of Mining, Hanoi University of Mining and Geology, Vietnam  Faculty of Civil Engineering, Hanoi University of Mining and Geology, Vietnam
Published: October 2020

Ulstrasonic has been popularly applied in more practical sectors, contributing to assess any issues, such as non-homogeneous, defects, without direct measures. One of these applications is for solid materials, such as rock. With the characteristics and abilities of ulstrasonic, as well as dimension stone characteristics, the author studied the applied ability of this wave in dimension stone quarrying. Particularly, this is determining joints in stone blocks before delivering to the processing plant. Basing on researching the character, size, rock mechanics of stone bocks and ulstrasonic features, its work capability, principle of None-Destructive Testing device (NDT), the paper shows that measure method by ulstrasonic could exactly and reliably estimate joints in stone block. From ulstrasonic feature of transfering around avoid instead of not transfering through it, the method is released to navigate position, size and shape of joints in stone blocks.
Definition of amount explosive per blast for spillway at the Nui Mot lake - Binh Dinh province
Authors: Nguyen An Dinh , Nhu Bach Van , Tran Bao Dinh , Pham Hoa Van , Nguyen Tho Anh ,   Faculty of Mining, Hanoi University of Mining and Geology, Vietnam  Vietnam National Association of Blasting Engineering, Vietnam  Ph. D. student of Faculty of Mining, Hanoi University of Mining and Geology, Vietnam
Published: October 2020

Blasting is still the most popular and effective method of breaking rocks and it is widely used in mining, leveling, and building demolition. In blasting process carried out in surface mines, a series of bad impacts on environment are generated such as ground vibration, air blast, flying rock, dust and poisonous gases. The contents of the article present the method for determining the explosive amount per blast and minimizing the bad impacts caused by blasting at the spillway No.2 near the spillway No.1 at Nui Mot lake - Binh Dinh province.
Advanced Mining Geomatic Technologies Serving Open-Pit Mining Operation in Vietnam
Authors: Nguyen Long Quoc , Vo Dung Ngoc , Vo My Chi ,   Faculty of Geomatics and Land Administration, Hanoi University of Mining and Geology, Vietnam  Vietnam Association of Mining Science and Technology
Published: October 2020

Along with the development of open-pit mining operation, mining geomatic engineering have been on the go for years playing an important role in periods of designing, building, operating, closing and environmental monitoring. The application of modern geomatic technologies has been improving the efficiency of the management and operations in open-pit mines, reducing time, effort and safety. The article presents an overview of achievements in the application of modern geomatic technologies to the development of Vietnam's open-pit mining industry.
YAŞLI İSTİSMARI VE İHMALİNE YÖNELİK SOSYAL HİZMET MÜDAHALESİ VE YAKLAŞIMLARI
Authors: LOTFİ Sayra
Published: October 2020

Yaşlanan nüfusun artması durumuna paralel olarak yaşlı istismarı ve ihmali sorununda da artışın meydana geldiği bilinmektedir. Bu duruma ek olarak, yaşlı bireye sahip ailelerde toplum temelli bakım organizasyonlarına artan ilginin de doğal bir sonucu olarak yaşlı istismarı ve ihmali sorunu gündeme gelmekte, bu sorun alanına müdahale etme noktasında sosyal hizmet uygulamasına duyulan ihtiyaç belirginleşmektedir. Yaşlı istismarı ve ihmali, farklı toplumlar tarafından çoğunlukla göz ardı edilen bir tabu olmaya devam etmektedir. Yaşlılara karşı istismar ve ihmal, yaşlıları fiziksel, ruhsal, ekonomik ve sosyal yönden tehdit eden toplumsal bir sorundur fakat tüm toplumu ilgilendiren bir sorun olmasına rağmen toplumun ilgisinden uzak bir şekilde kişisel bir olgu olarak kabul edilmektedir. Bu çalışma, yaşlı istismarı ve ihmali konusundaki kavramsal ve kuramsal çerçeve kapsamında gerçekleştirilebilecek sosyal hizmet uygulamalarını ve mesleki müdahaleleri açıklamayı amaç edinen derleme bir çalışmadır. Çalışmada, öncelikle yaşlı kavramı bağlamında yaşlı istismarı ve ihmali kavramına değinilmiş, yaşlı nüfusu etkileyen aile içi şiddet ile ilgili ulusal ve uluslararası araştırmalar, teori, politika ve uygulamaların gelişimine yer verilmiş, istismar ve ihmal ile ilişkili gerçekleştirilebilecek sosyal hizmet müdahaleleri, sosyal hizmet kuram ve yaklaşımları çerçevesinde değerlendirilmiştir.
DECRIPTION OF A HEREDITARY ANGIONEUROTIC EDEMA FORM IN A CHILD
Authors: Lutkova Tatyana S. , Karzakova Luiza M. , Ukhterova Nadezhda D. , Zhuravleva Nadezhda V. , Andreeva Nataliya P. , Kudryashov Sergei I.
Published: October 2020

Congenital deficiency of the C1-component inhibitor of the complement cascade, or hereditary angioneurotic edema, is a rare autosomal dominant disease due to a mutation in the human C1-esterase inhibitor. Caused by C1 deficiency unregulated cleavage of high molecular weight plasma kininogen results in excess production of a mediator with vasodilating action – bradykinin. Hereditary type 1 angioedema develops as a result of C1 inhibitor deficiency, while type 2 is caused by decreased C1 inhibitor activity. The disease manifests itself in childhood or adolescence as recurrent episodes of edema in the skin, subcutaneous fiber and mucous membranes. Localization of edemas in the submucous layer of the larynx represents a threat to life, which can lead to the development of laryngostenosis and acute respiratory failure. The article describes a case of hereditary angioneurotic edema in a girl, which manifested in early childhood. There were no great difficulties in diagnosing the disease, as patients with this pathology were already identified earlier in the family. A significant reduction in C1-inhibitor content was found in the patient, which made it possible to clarify the type of hereditary angioneurotic edema and to categorize it to type 1. A synthetic antifibrinolytic agent with the ability to block kinins and angioneurotic edemas was successfully used in the treatment and prevention of swelling attacks in the patient. The analysis of the case shows that hereditary angioneurotic edema remains a problem difficult enough for a practical doctor requiring careful history taking, assessment of disease development dynamics and performing a laboratory – genetic examination. In most cases, only differential diagnostics can give the opportunity to suspect the dangerous pathology in the patient in a timely manner which requires immediate hospitalization and providing aid adequate to the disease.
A comparison of low dose ultrasound and far infra-red therapies in patients with mechanical neck pain
Authors: Marwa Mohamed Hany Sedeek Abousenna  , Amr Saadeldeen Mohamed Shalaby  , Aksh Chahal  , Abu Shaphe
Published: October 2020

Abstract

Objective: To compare the effect of low-dose continuous ultrasound and far-infrared interventions for reducing pain in patients with mechanical neck pain.

Method: The experimental study was conducted from April 2016 to January 2017 at the electrotherapy laboratory of the Department of Physical Therapy, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia, and comprised female patients diagnosed with mechanical neck pain. They were divided into two equal groups, with Group A receiving 3 sessions per week of low-dose continuous ultrasound on the cervical region for 7 weeks, and Group B receiving far-infrared treatment on the same patterns. Both groups received stretching, strengthening exercises and transcutaneous electrical nerve stimulation. Pain tolerance was assessed at baseline and post-intervention using digital algometer. Data was analysed using SPSS 17.

Results: Of the 30 women with a mean age of 21.36±1.14 years, there were 15(50%) in each of the two groups. There was a significant decrease in post-intervention bilateral values compared to baseline in both groups. Group B showed higher significant values than Group A (p<0.05).

Conclusions: Far-Infrared was found to be much better than low-dose continuous ultrasound for reducing pain in patients suffering from mechanical neck pain.

Key Words: Pain tolerance, Ultrasound, Infrared, Trigger points, Mechanical neck pain, Algometer.

Continuous....
Urbanization Trends and Processes in Kazakhstan
Authors: Kabdesov Kenzhekhan
Published: October 2020

Goals and objectives of the research: the main goal of the research is to analyze urbanization processes occurring in Kazakhstan in the period between 2009 and 2019.

Methodology: the author uses comparative analysis and synthesis via statistics taken from the Committee on Statistics of the Republic of Kazakhstan by the period of 2009-2019. There is a comparison of the share of urban population, unemployment rate and average monthly salary wage in Almaty, Nur-Sultan, Shymkent.

Findings : primarily, there is shown an overview of worldwide trends towards urbanization processes. Main causes of these processes globally and regionally are presented either. Afterwards, diagrams and graphs with main indicators as well as description of urbanization in Kazakhstan can be seen. Then it leads to conclusion. The structure of this paper: abstract, main part (with diagrams and tables), conclusion, references.

Value: The paper reviews the changes of urbanization processes in Kazakhstan. Urbanization today is one of the main trends of the world. Currently the urban population has exceeded the number of people living in rural areas, and this trend will only intensify. Regarding developed countries, it can be seen that 3/4 of the country population tend to live in cities: in the United Kingdom, the rate of urbanization hits 82%, in the USA - 81%, in France - 79%, in Germany - 75%. In accordance with UN forecasts, by 2050, 6.2 billion people will reside in cities, which will be 66% of the total population of the earth. Therefore

Theoretical or Practical implications: the given research results can be used by governmental committees and implemented for theoretical courses and disciplines towards urbanization.
The Features of Management Accounting in Appraisal Companies
Authors: Daniyar Aida , Ruzanov Rashid
Published: October 2020

The aim of the study is to determine the specificity of management accounting in appraisal companies. Appraisal activity is one of the aspects of the multi-faceted concept of «appraisal», which also means the process of professional appraisal implemented by the appraiser, and applied economics with its own methodology, terminology, research principles, and professional opinion of the appraiser regarding the value of a particular object of appraisal. Methodology. This study uses a historical, systematic and integrated approach to the transfer of material. Transmission logic, which is the original definition of the basic concepts and further description of fundamentals of management accounting, allows understanding patterns and modern trends of appraisal activity.

Certain provisions were used in the practice of a Limited Liability Partnership engaged in appraisal services. Research results obtained allow us to understand the nuances of management accounting to improve the performance of appraisal companies in the Republic of Kazakhstan.

The scientific novelty of the research is that because of a theoretical study of management accounting, possible directions for increasing the wellness of appraisal companies are justified. Theoretical and practical significance of the study connect with the possibility of using the scientific results in the deals of the Ministry of Finance of the Republic of Kazakhstan and its structural subdivisions, the tax authorities at different levels, the Ministry of national economy of Kazakhstan. This fundamental research can be used as a basis for training specialists in the field of performance accounting.
KONTRIBUSI PERSEPSI SISWA TENTANG FASILITAS BENGKEL TEKNIK KENDARAAN RINGAN OTOMOTIF DAN MINAT BELAJAR TERHADAP PRESTASI BELAJAR SISWA
Authors: Arman Arman
Published: October 2020

Penelitian ini didasari pada dugaan adanya permasalahan yang mempengaruhi pencapaian prestasi belajar siswa yaitu persepsi siswa tentang fasilitas Bengkel Teknik Kendaraan Ringan Otomotif dan minat belajar siswa. Bertujuan untuk menganalisis kontribusi persepsi siswa tentang fasilitas Bengkel Teknik Kendaraan Ringan Otomotif dan minat belajar terhadap prestasi belajar siswa baik secara parsial maupun secara simultan. Populasi penelitian ini adalah siswa SMK Negeri 3 Kota Jambi tingkat 2 semester ganjil Tahun Pelajaran 2019-2020 sebanyak 64 siswa. Sampel penelitian berjumlah 32 siswa. Pengambilan data melalui angket yang telah diuji validitas dan reliabilitasnya selanjutnya mengumpulkannya dan mencatat arsip hasil belajar siswa. Teknik analisis data dilakukan dengan mentabulasi data, mencari tingkat kecenderungan variabel, menguji persyaratan uji analisis, menguji hipotesis. Hasil penelitian menunjukkan: 1) Persepsi siswa tentang fasilitas Bengkel Teknik Kendaraan Ringan Otomotif berkontribusi secara signifikan (rhitung) sebesar 0,455 terhadap prestasi belajar siswa. Kontribusi variabel persepsi siswa sebesar 20,7%. 2) Minat belajar berkontribusi terhadap prestasi belajar Perawatan Mesin Kendaraan Ringan yang secara signifikan (rhitung) sebesar 0,478. Kontribusi variabel minat belajar sebesar 22,8%. 3) Persepsi siswa tentang fasilitas Bengkel Teknik Kendaraan Ringan Otomotif dan minat belajar secara bersama-sama berkontribusi signifikan (rhitung) sebesar 0,599 terhadap prestasi belajar siswa. Kontribusi variabel persepsi siswa dan minat belajar terhadap prestasi belajar adalah sebesar 35,9%.
Beliren ve Genç Yetişkinlerde Koşulsuz Kendini Kabul ve İlişki Bağımlılığı Arasındaki İlişkide Olumsuz Değerlendirilme Korkusunun Aracı Rolünün İncelenmesi
Authors: TURGUT Tuğba , YÜCEL Sümeyye
Published: October 2020

Bu çalışmanın amacı; beliren ve genç yetişkinlerde koşulsuz kendini kabul ile ilişki bağımlılığı arasındaki ilişkide olumsuz değerlendirilme korkusunun aracı rolünün incelenmesidir. Ayrıca koşulsuz kendini kabul, ilişki bağımlılığı ve olumsuz değerlendirilme korkusunun birtakım demografik değişkenler bakımından ele alınması da amaçlanmıştır. Araştırmanın çalışma grubunu, 256 (%80,5) kadın ve 62 (%19,5) erkek olmak üzere toplam 318 birey oluşturmaktadır. Araştırmada Demografik Bilgi Formu, Spann-Fischer İlişki Bağımlılığı Ölçeği, Koşulsuz Kendini Kabul Ölçeği ve Olumsuz Değerlendirilme Korkusu Ölçeği veri toplama araçları olarak kullanılmıştır. Araştırmanın amaçlarını test etmek için verilerin analizinde Bağımsız Grup t testi, ANOVA (Tek Yönlü Varyans Analizi), Pearson Momentler Çarpımı Korelasyonu, Koşullu Süreç Analizi ve Bootstrapping analizi kullanılmıştır. Gerçekleştirilen analizler neticesinde; beliren ve genç yetişkinlerde ilişki bağımlılığı, koşulsuz kendini kabul ve olumsuz değerlendirilme korkusu arasında anlamlı ilişkiler bulunmaktadır. Kurulan modelde koşulsuz kendini kabul ile ilişki bağımlılığı arasındaki ilişkide olumsuz değerlendirilme korkusunun kısmi aracı rolü olduğu sonucuna ulaşılmıştır. Ayrıca demografik değişkenler olan medeni durum, ebeveyn tutumları ve gelişim dönemlerine göre anlamlı farklılıkların olduğu sonucuna ulaşılmaktadır.
Geological seabed stability model for informing Irish offshore renewable energy opportunities
Authors: Peters Jared L. , Butschek Felix , O'Connell Ross , Cummins Valerie , Murphy Jimmy , Wheeler Andrew J.
Published: October 2020

Abstract. Climate change has driven the European Union to propose a reduction in carbon emissions by increasing renewable energy production. Although Ireland is rich in renewable energy, especially offshore wind resources, it is failing to reduce its annual carbon emissions. This study endeavours to improve Ireland's marine spatial planning abilities and offshore renewable energy developments by harmonising and customising a unique geological dataset for incorporation into geospatial assessments of Ireland's continental shelf. A dataset of 1858 points, including 17 new seabed samples collected at strategic sites for this study, is created and used to build a series of geospatial outputs. Data are interpolated with empirical Bayesian kriging to use variogram analyses for probabilistically interpolating coded geological values. The interpolation results are validated through leave-one-out cross-validation and combined with bespoke models of bathymetry and seabed slope using map algebra. The final model reveals areas of relative probable seabed stability based on geological and geomorphological characteristics and is shown to comport with known conditions in several locations. Results suggest that the methods and results presented here could provide useful information to future planning activities and initial site selection assessments.
The development of the “Storm Tracker” and its applications for atmospheric high-resolution upper-air observations
Authors: Hwang Wei-Chun , Lin Po-Hsiung , Yu Hungjui
Published: October 2020

Abstract. In this study, we introduce a newly developed upper-air observational
instrument for atmospheric research. The “Storm Tracker” is an ultra-lightweight (about 20 g including battery),
multi-channel simultaneous capable radiosonde designed by the Department of
Atmospheric Sciences at National Taiwan University. Developed in 2016,
the Storm Tracker aims to provide an alternative for observing
atmospheric vertical profiles with a high temporal resolution, especially
the lower-level atmosphere under severe weather conditions such as extreme thunderstorms
and tropical cyclones. Field experiments were conducted as trial runs in Wu-Chi, Taichung, Taiwan,
to examine the ability of the Storm Tracker to observe the boundary layer,
in addition to the intercomparison between the Storm Tracker and the widely
used Vaisala RS41-SGP radiosonde. Among the co-launches of the Storm Tracker
and Vaisala RS41 radiosondes, the measurements of pressure, wind speed, and
wind direction are highly consistent between the measurements of the Storm
Tracker and the Vaisala RS41-SGP. However, a significant daytime warm bias
in the Storm Tracker was found due to solar heating. A metal shield
specifically for the Storm Tracker was thus installed and showed mitigation
for the warm biases and the overall variance. With the much lower costs of the radiosondes and the simultaneous
multi-channel receiver, the Storm Tracker system has shown great potential
for high-frequency observational needs in atmospheric research.
A case study of the spectral parameters of ULF fluctuations before substorms with no evident trigger in the interplanetary space
Authors: Nosikova Nataliya Sergeevna , Yagova Nadezda Viktorovna , Baddeley Lisa Jane , Lorentzen Dag Arne , Sormakov Dmitriy Anatolyevich
Published: October 2020

Abstract. Our recent study (Yagova et al., 2017) shows that ultralow frequency (ULF) pulsations are seen in ground-based magnetic and luminosity data in the polar cap for a few hours preceding isolated non-triggered substorms. Such pulsations are characterised by a high level of coherence. There might be two possible origins of these pulsations: ULF disturbances in the solar wind or processes inside the magnetosphere, which lead to a substorm generation. In this case, the first scenario should be considered as a substorm trigger. To understand the role of the mentioned mechanisms in developing of pulsations, a detailed case study has been carried out. It is shown that before a weak substorm, fluctuations with the central frequency 1.5 mHz are observed in the both polar caps in ground-based geomagnetic data. Coherent pulsations with the same main frequency are also seen in the magnetotail magnetic field, in addition to simultaneous electron concentration in the ionosphere, while fluctuations in electron temperature and electron flux in the magnetosphere have a slightly different main frequency. These pulsations appeared after ULF activity in solar wind and interplanetary magnetic field became inappreciable.
A volumetric census of the Barents Sea in a changing climate
Authors: Watelet Sylvain , Skagseth Øystein , Lien Vidar S. , Sagen Helge , Østensen Øivind , Ivshin Viktor , Beckers Jean-Marie
Published: October 2020

Abstract. The Barents Sea, located between the Norwegian Sea and the Arctic Ocean, is one of the main pathways of the Atlantic Meridional Overturning Circulation. Changes in the water mass transformations in the Barents Sea potentially affect the thermohaline circulation through the alteration of the dense water formation process. In order to investigate such changes, we present here a seasonal atlas of the Barents Sea including both temperature and salinity for the period 1965–2016. The atlas is built as a compilation of datasets from the World Ocean Database, the Polar Branch of the Russian Federal Research Institute of Fisheries and Oceanography and the Norwegian Polar Institute using the Data-Interpolating Variational Analysis (DIVA) tool. DIVA allows for a minimization of the expected error with respect to the true field. The atlas is used to provide a volumetric analysis of water mass characteristics and an estimation of the ocean heat and freshwater contents. The results show a recent “Atlantification” of the Barents Sea, that is a general increase in both temperature and salinity, while its density remains stable. The atlas is made freely accessible as user-friendly NetCDF files to encourage further research in the Barents Sea physics (https://doi.org/10.21335/NMDC-2058021735, Watelet et al., 2020).
Dense point cloud acquisition with a low-cost Velodyne VLP-16
Authors: Bula Jason , Derron Marc-Henri , Mariethoz Gregoire
Published: October 2020

Abstract. This study develops a low-cost terrestrial lidar system (TLS) for dense point cloud acquisition. Our system consists of a VLP-16 lidar scanner
produced by Velodyne, which we have placed on a motorized rotating platform. This allows us to continuously change the direction and densify the
scan. Axis correction is performed in post-processing to obtain accurate scans. The system has been compared indoors with a high-cost system,
showing an average absolute difference of ±2.5 cm. Stability tests demonstrated an average distance of ±2 cm between
repeated scans with our system. The system has been tested in abandoned mines with promising results. It has a very low price (approximately USD 4000) and opens the door to measuring risky sectors where instrument loss is high but information valuable.