bluuebunny/crossref_metadata_2025 huggingface dataset:
Tuning Stoichiometry and Structure of Pd-WO3−x Thin Films for Hydrogen Gas Sensing by High-Power Impulse Magnetron Sputtering
Authors: Kumar Nirmal , Haviar Stanislav , Rezek Jiří , Baroch Pavel , Zeman Petr
Published: November 2020

By tuning the deposition parameters of reactive high-power impulse magnetron sputtering, specifically the pulse length, we were able to prepare WO3−x films with various stoichiometry and structure. Subsequently, the films were annealed in air at moderate temperature (350 °C). We demonstrate that the stoichiometry of the as-deposited films influences considerably the type of crystalline phase formed in the annealed films. The appropriate sub-stoichiometry of the films (approx. WO2.76) enabled crystallization of the monoclinic phase during the annealing. This phase is favorable for hydrogen sensing applications. To characterize the sensory behavior of the films, the tungsten oxide films were decorated by Pd nanoparticles before annealing and were assembled as a conductometric gas sensor. The sensory response of the films that crystallized in the monoclinic structure was proven to be superior to that of the films containing other phases.
Cyclic Load Test and Finite Element Analysis of NOVEL Buckling-Restrained Brace
Authors: Alemayehu Robel Wondimu , Kim Youngsik , Bae Jaehoon , Ju Young K.
Published: November 2020

Compared to concrete or mortar-filled Buckling-Restrained Braces (BRBs), all-steel BRBs provide weight and fabrication time reductions. In particular, all-steel buckling braces with H-section cores are gaining attention in cases where large axial strength is required. In this paper, an all-steel BRB, called NOVEL (Noise, CO2 emission, Vibration, Energy dissipation and Labor), is presented. It comprises an H-section core encased in a square casing, and its behavior was studied through full-scale subassembly and brace tests, followed by a finite element parametric study. Two failure modes were observed: global buckling and flange buckling of the H-section core, which occurred in test specimens with Pcr/Py ratios of 1.68 and 4.91, respectively. Global buckling occurred when the maximum moment in the casing reached its yielding moment, although the test specimens had sufficient stiffness to prevent global buckling. Failure by core flange buckling occurred at a core strain of 1.2%. The finite element parametric study indicated that adjusting the width-to-thickness ratio of the core flange is more feasible than stiffening the flange or adjusting the unconstrained-length end stiffeners. The value of 5.06 was the minimum flange slenderness ratio that provided a stable hysteresis to the end of the loading protocol of the American Institute of Steel Construction standard.
Dental Aerosol as a Hazard Risk for Dental Workers
Authors: Matys Jacek , Grzech-Leśniak Kinga
Published: November 2020

Standard dental procedures, when using a water coolant and rotary instruments, generate aerosols with a significantly higher number of various dangerous pathogens (viruses, bacteria, and fungi). Reducing the amount of aerosols to a minimum is mandatory, especially during the new coronavirus disease, COVID-19. The study aimed to evaluate the amount of aerosol generated during standard dental procedures such as caries removal (using dental bur on a high and low-speed handpiece and Er:YAG laser), ultrasonic scaling, and tooth polishing (using silicon rubber on low-speed handpiece) combined with various suction systems. The airborne aerosols containing particles in a range of 0.3–10.0 μm were measured using the PC200 laser particle counter (Trotec GmbH, Schwerin, Germany) at three following sites, manikin, operator, and assistant mouth, respectively. The following suction systems were used to remove aerosols: saliva ejector, high volume evacuator, saliva ejector with extraoral vacuum, high volume evacuator with extraoral vacuum, Zirc® evacuator (Mr.Thirsty One-Step®), and two customized high volume evacuators (white and black). The study results showed that caries removal with a high-speed handpiece and saliva ejector generates the highest amount of spray particles at each measured site. The aerosol measurement at the manikin mouth showed the highest particle amount during caries removal with the low and high-speed handpiece. The results for the new high volume evacuator (black) and the Zirc® evacuator showed the lowest increase in aerosol level during caries removal with a high-speed handpiece. The Er:YAG laser used for caries removal produced the lowest aerosol amount at the manikin mouth level compared to conventional dental handpieces. Furthermore, ultrasonic scaling caused a minimal aerosol rise in terms of the caries removal with bur. The Er:YAG laser and the new wider high volume evacuators improved significantly suction efficiency during dental treatment. The use of new suction systems and the Er:YAG laser allows for the improvement of biological safety in the dental office, which is especially crucial during the COVID-19 pandemic.
Size-Dependent Mechanical Properties of Amorphous SiO2 Nanowires: A Molecular Dynamics Study
Authors: Sun Kun , Chen Juan , Wu Bingjie , Wang Liubing , Fang Liang
Published: November 2020

Uniaxial tension tests were performed for amorphous SiO2 nanowires using molecular dynamics simulation to probe the size effect on the mechanical properties and plastic deformation by varying the length of nanowires. The simulation results showed that the Young’s modulus of SiO2 nanowires increased with the decrease of nanowires length due to its higher surface stress. The corresponding deformation of SiO2 nanowires during tension exhibited two periods: atomic arrangement at small strain and plastic deformation at large strain. During the atomic arrangement period, the percentage variations of atom number of 2-coordinated silicon and 3-coordinated silicon (PCN2 and PCN3) decreased, while the percentage variations of atom number of 4-coordinated silicon, 5-coordinated silicon (PCN4 and PCN5) and the Si–O bond number (PCB) rose slightly with increasing strain, as the strain was less than 22%. The situation reversed at the plastic deformation period, owing to the numerous breakage of Si–O bonds as the strain grew beyond 22%. The size effect of nanowires radius was considered, finding that the Young’s modulus and fracture stress were higher for the larger nanowire because of fewer dangling bonds and coordinate defeats in the surface area. The elastic deformation occurred at a small strain for the larger nanowire, followed by the massive plastic deformation during tension. A brittle mechanism covers the fracture characteristics, irrespective of the nanowire size.
Conductor Reconstruction for Dynamic Line Rating Using Vehicle-Mounted LiDAR
Authors: McCulloch Josh , Green Richard
Published: November 2020

Dynamic Line Rating (DLR) is a process which electrical network operators can implement to improve efficiency by dynamically adjusting the load capacity as conditions allow. To implement DLR an accurate model of the conductors and their clearances is needed. Airborne LiDAR, while expensive, is the most common method of collecting line data as it is fast and is of high quality. State of the art methods for automatically reconstructing conductors first classify conductor points before fitting conductor models. This approach works well for high tension lines with significant separation between conductors but tends to perform poorly in urban environments where conductors are packed tightly together and surrounded by clutter. The method presented in this article attempts to overcome these challenges by performing an informed search for the conductors, anchored to the utility poles. Before the conductors are classified, their layout and sag are estimated, converting conductor segmentation into a linear problem; and a 3D to 2D projection is used to improve density and simplify clustering. The work also attempts to reduce the cost of conductor reconstruction by utilising lower-cost vehicle-mounted LiDAR. By avoiding point classification, higher precision can be achieved in scenarios where previous methods have suffered from significantly degraded performance.
Efficient Upper Limb Position Estimation Based on Angular Displacement Sensors for Wearable Devices
Authors: Contreras-González Aldo-Francisco , Ferre Manuel , Sánchez-Urán Miguel Ángel , Sáez-Sáez Francisco Javier , Blaya Haro Fernando
Published: November 2020

Motion tracking techniques have been extensively studied in recent years. However, capturing movements of the upper limbs is a challenging task. This document presents the estimation of arm orientation and elbow and wrist position using wearable flexible sensors (WFSs). A study was developed to obtain the highest range of motion (ROM) of the shoulder with as few sensors as possible, and a method for estimating arm length and a calibration procedure was proposed. Performance was verified by comparing measurement of the shoulder joint angles obtained from commercial two-axis soft angular displacement sensors (sADS) from Bend Labs and from the ground truth system (GTS) OptiTrack. The global root-mean-square error (RMSE) for the shoulder angle is 2.93 degrees and 37.5 mm for the position estimation of the wrist in cyclical movements; this measure of RMSE was improved to 13.6 mm by implementing a gesture classifier.
Metrology of a Focusing Capillary Using Optical Ptychography
Authors: Huang Xiaojing , Nazaretski Evgeny , Xu Weihe , Hidas Dean , Cordier Mark , Stripe Benjamin , Yun Wenbing , Chu Yong S.
Published: November 2020

The focusing property of an ellipsoidal monocapillary has been characterized using the ptychography method with a 405 nm laser beam. The recovered wavefront gives a 12.5×10.4μm2 focus. The reconstructed phase profile of the focused beam can be used to estimate the height error of the capillary surface. The obtained height error shows a Gaussian distribution with a standard deviation of 1.3 μm. This approach can be used as a quantitative tool for evaluating the inner functional surfaces of reflective optics, complementary to conventional metrology methods.
On the Accuracy of Fault Diagnosis for Rolling Element Bearings Using Improved DFA and Multi-Sensor Data Fusion Method
Authors: Song Qiang , Zhao Sifang , Wang Mingsheng
Published: November 2020

Rolling element bearings are widely employed in almost every rotating machine. The health status of bearings plays an important role in the reliability of rotating machines. This paper deals with the principle and application of an effective multi-sensor data fusion fault diagnosis approach for rolling element bearings. In particular, two single-axis accelerometers are employed to improve classification accuracy. By applying the improved detrended fluctuation analysis (IDFA), the corresponding fluctuations detrended by the local fit of vibration signals are evaluated. Then the polynomial fitting coefficients of the fluctuation function are selected as the fault features. A multi-sensor data fusion classification method based on linear discriminant analysis (LDA) is presented in the feature classification process. The faults that occurred in the inner race, cage, and outer race are considered in the paper. The experimental results show that the classification accuracy of the proposed diagnosis method can reach 100%.
National Versus Local Sustainable Development Plans and Island Priorities in Sanitation: Examples from the Kingdom of Tonga
Authors: White Ian , Falkland Tony , Kula Taaniela
Published: November 2020

Sanitation, water supply, and their governance remain major challenges in many Pacific Island countries. National sustainable development strategies (NSDSs) are promoted throughout the Pacific as overarching improved governance instruments to identify priorities, plan solutions, and fulfill commitments to sustainable development. Their relevance to local village-level development priorities is uncertain. In this work we compare national priorities for sanitation in NSDSs with those in village community development plans (CDPs) and with metrics in censuses from the Kingdom of Tonga. Tonga’s Strategic Development Frameworks (TSDFI 2011–2014 and TSDFII 2015–2025) were developed to focus government and its agencies on national outcomes. From 2007 to 2016, 136 villages throughout Tonga’s five Island Divisions (IDs) formulated CDPs involving separately 80% of women, youth, and men in each village. It is shown that censuses in 2006 and 2016 reveal linked improvements in water supply and sanitation systems but identify IDs with continuing challenges. It is found that sanitation and water are a national priority in TSDFI but are absent from the current TSDFII. In contrast, analysis of CDPs, published just after TSDFII, show in one ID, 53% of villages ranked sanitation as a priority and marked differences were found between IDs and between women, youth, and men. CDPs’ sanitation priorities in IDs are shown to mostly correspond to sanitation and water metrics in the censuses, but some reflect impacts of natural disasters. Explanations for differences in sanitation priorities between the national and local development plans, as well as suggestions for improving NSDS processes in island countries, are advanced.
A Model for Managing Packaging in the Product Life Cycle in the Automotive Industry
Authors: Škerlič Sebastjan , Muha Robert
Published: November 2020

Due to its many benefits, the automotive industry is increasingly focused on the use of returnable packaging, but the benefits of using it can only be fully realized if the system is properly managed. This study therefore aims to build a model that enables a comparison between different sustainable packaging systems: non-returnable packaging, returnable packaging, and returnable foldable packaging. The applicability of the model was verified in a multinational manufacturing company that is a development supplier in the international automotive industry. The results highlight the main advantages of the model: enabling the comparison between the use of different sustainable packaging systems; when simulating different scenarios, it takes into account several different cost components and ensures a systematic selection of the packaging system in the early phase of product development. The high degree of practicality and usability of the model was also validated by the sensitivity analysis, as the longer the transport distance, the more acceptable the use of non-returnable packaging. In addition, higher demand for the product was correlated with a reduction in the total cost of all three aspects of packaging choice. The model upgrades existing studies and represents a practical decision-making tool for manufacturing companies and the logistics industry. It will contribute to the systematic construction of a packaging management system at an early stage of product development, which will reduce costs in the long run, improve the quality of logistics processes, and ensure an effective sustainable packaging management system.
THEONYMS AND MYTHONYMS IN EARLY LATIN-SLAVIC DICTIONARIES
Authors: Shapoval V.V.
Published: November 2020

The interpretation of the onyms and mythonyms in the early printed dictionaries of Europe, including Slavic (Czech, and then Polish) material, deserves close attention. Latin-Czech dictionary of 1511 and subsequent dictionaries of the XVI cent. sometimes give unexpected links and definitions in the Slavic part. These peculiarities in the presented material allow us to reconstruct some details in the concepts of the past concerning the analyzed phenomena. In addition, like other proper names, theonyms and mythonyms do not have special marks in the common alphabetical order or thematic subsections; the last complicates their detection and analysis.
An Empirical Study on International Market Scenario in Modern Economic Era of India
Authors: Srinivasan K.R. , Duraichamy J
Published: November 2020

India has created as the fastest developing major economy on earth and is depended upon to be extraordinary compared to other three economic forces of the world all through the accompanying 10-15 years, upheld by its strong vote based framework and affiliations. The economy of India is depicted as a creating market economy. It is the world’s fifth-greatest economy by apparent GDP and the third-greatest by Purchasing Power Equality (PPP). Since the start of the 21st century, yearly typical GDP development has been 6% to 7%, and from 2014 to 2018, India was the speediest developing major economy, beating China. Unquestionably India was one of the greatest economies on earth for most of the two centuries from first until nineteenth century. The long stretchdevelopment perspective of the Indian economy remains positive in light of its young people and contrasting low dependence extent, sound save reserves and investment rates, and is growing fuse into the worldwide economy. The economy moved in 2017, due to paralyzes of “demonetization” in 2016 and introduction of Goods and Services Tax in 2017. Practically 60% of India’s GDP is driven by domestic private utilization and keeps on lingering the world’s sixth greatest purchaser market. Beside private utilization, India’s GDP is moreover filled by government spending, investment and trades. In 2018, India was the world’s 10th greatest merchant and the nineteenth-greatest exporter. India has been a person from World Trade Organization since 1 January 1995. It situated 63rd on Ease of working together rundown and 68th on Global Competitiveness Report. With 510-million-authorities, the Indian work power is the world’s second-greatest beginning at 2018.During the 2008 worldwide monetary crisis the economy went up against smooth log jam, India attempted improvement measures to help development and produce demand; in resulting year’s economic development re-established. As shown by World Bank, to achieve down to earth economic development India must focus on open sector change, establishment, horticultural and provincial development, departure of land and work rules, budgetary joining, prod private investment and fares, instruction and public prosperity. Hence, the present study has been conducted with an aim to give an overview on the International Market scenario in the modern economic era and study based on secondary sources of data collection.
Assessment of seismic hazard in mines
Authors: Malovichko Dmitriy
Published: November 2020

The assessment of seismic hazard in mines has several peculiarities compared to the similar assessment for tectonic earthquakes: (a) in mines seismicity is typically induced by the extraction of rocks, what makes the assessment of hazard depends on the planned mining sequence, (b) many seismic events in mines have source mechanisms different from the mechanisms of tectonic earthquakes, (c) the likelihoods of both strong ground motion from distant seismic events and localized sudden inelastic deformation on the contour of excavations are of interest, (d) the spatial distribution of seismic hazard may experience significant change over relatively short periods of time (several years), which makes it possible to implement rigorous testing of the hazard forecasts, selection of optimal forecast method and its calibration. This paper provides a brief review of recent publications on the assessment of seismic hazard in mines. The method of intermediate- and long-term hazard forecast based on the combination of observed seismicity and seismicity modeled for the planned mining sequence is discussed in detail. The application of this method at the acting underground mine in Australia is presented.
Variations of hydrogen in the surface-atmosphere in connection with the manifestation of seismic activity in the Eastern Caucasus
Authors: Saidov Omar
Published: November 2020

According to the literature, modern ideas about the earthquake center as one of the blocks of the hierarchical structure of the earth's crust, which loses stability during energy and mass exchange with the environment, are considered. Long-term continuous measurements (6 years) of hydrogen concentrations in the surface-atmosphere were carried out at two observation points in the Dagestan wedge tectonic region (Republic of Dagestan). It is shown that variations of hydrogen concentrations in the surface-atmosphere have annual periodicity. At the same time, in adjacent time intervals of the series, a change in the dispersion of hydrogen concentrations is noted. Initially, there is an increase in the value of the dispersion, after which it is marked by an abrupt decrease, the stages of which in most cases correspond to seismic events. A change in the dispersion value in adjacent time intervals of hydrogen concentrations implies a corresponding change in the entropy in the exciting thermodynamic system, i.e. in the earthquake focus. As a result of the relaxation of elastic energy, the thermodynamic system passes to the most probable, steady-state, and accordingly, values of dispersion of concentrations of hydrogen tend to a minimum.
Conceptual model of personality's information competence
Authors: Maksymenko Yurii , Matohniuk Liudmyla
Published: November 2020

Analysis of scientific literature, generalization of information about information competence of the individual gives grounds to define it as the orientation of the individual to ensure the effectiveness of life in the information society, which is an integral quality of personality, holistic, dynamic system of personal abilities that allow consciously and creatively define and carry out . Based on the analysis of the scientific literature, expert data and taking into account the idea of the component composition of information competence (N. Balovsyak, A. Khutorsky, I. Kisla, R. Pavlyuk, etc.), nineteen bipolar indicators of information competence of the individual are determined. It is established that the set of their typical characteristics reflect the level of manifestation of components in a particular person, which allows to determine the general level of information competence of the individual. Cluster analysis allowed to group indicators into the component composition of information competence of the individual, which includes motivation, direction of action, subjective, personal, group and business orientation, project-behavioral, emotional-volitional components, personality abilities, life values, communication, professionally important qualities , eco- and legal culture. Relevant components are grouped into blocks: motivational-motivational, cognitive-activity, personal-value, meaningful. These components are closely interconnected and together ensure that the individual performs its functions: motivational and directional; cognitive-perceptual; communicative; regulatory and developmental; operational orientation. They determine the trajectory of the path of formation of personality, taking into account the development of its qualities, professional self-determination, motivational sphere, motivations, awareness of the essence of life and so on. It is established that the presence of reflection presupposes the ability to analyze, realize one’s qualities, personal qualities, know oneself, correct one’s behavior and way of life (M. Dyachenko, L. Kandybovych, etc.). Given the results of the study of V. Romenets and A. Furman, we believe that reflection is a phenomenon of aftereffect, which expresses the essence of the action. A person’s ability to reflect combines the characteristics of behavior and his ability to control their actions, and in interpersonal relationships supports the morality of behavior. Using a system-structural approach that takes into account the complexity of the whole personality as a set of interdependent substructures (S. Maksymenko and others), personality attitudes, attitudes, value orientations, communicative properties (O. Vakulenko, etc.), a structural-functional model is proposed information competence of the individual.
Proposal and demonstration of LED optical wireless power-transmission systems for battery-operated small electronic devices
Authors: Uchiyama Naomi , Yamada Hirohito
Published: November 2020

In recent years, various types of small electronic devices have become widespread. Optical wireless power-transmission (OWPT) systems can be charged over long distances and are promising candidates for systems that do not require dry batteries. In this study, we propose a wireless power-transmission method for supplying power to small electronic devices and demonstrate wireless power transmission. A crystalline Si (c-Si) solar cell and power-storage device incorporated into small electronic devices enable optical wireless power transmission systems using near-infrared LED lights and can be used to eliminate dry batteries.
Blockchain-based Supply Chain Traceability for COVID-19 PPE
Authors: Omar Ilhaam , Debe Mazin , Jayaraman Raja , Salah Khaled , Omar Mohammed , Arshad Junaid
Published: November 2020

The COVID-19 pandemic has severely impacted many industries, in particular the healthcare sector exposing systemic vulnerabilities in emergency preparedness, risk mitigation, and supply chain management. A major challenge during the pandemic was related to the increased demand of Personal Protective Equipment (PPE) resulting in critical shortages for healthcare and frontline workers. The lack of information visibility combined with the inability to precisely track product movement within the supply chain requires an robust traceability solution. Blockchain technology is a distributed ledger that ensures a transparent,

safe, and secure exchange of data among supply chain stakeholders. The advantages of adopting blockchain technology to manage and track PPE products in the supply chain include decentralized control, security, traceability,

and auditable time-stamped transactions. In this paper, we present a blockchain-based approach using smart contracts to transform PPE supply chain operations. We propose a generic framework using Ethereum smart contracts and

decentralized storage systems to automate the processes and information exchange and present detailed algorithms that capture the interactions among supply chain stakeholders. The smart contract code was developed and tested in Remix environment, and the code is made publicly available on Github. We present detailed cost and security analysis incurred by the stakeholders in the supply chain. Adopting a blockchain-based solution for PPE supply chains is economically viable and provides a streamlined, secure, trusted, and transparent mode of communication among various stakeholders.
Wilms' Tumor 1 (WT1): The Vaccine for Cancer
Authors: Hein Kyaw Zaw , Yao Shuyang , Fu Siqing
Published: November 2020

Vaccines have been used to fight and protect against infectious diseases for centuries. With the emergence of immunotherapy in cancer treatment, researchers began investigating vaccines that could be used against cancer, especially against tumors that are resistant to conservative chemotherapy, surgery, and radiotherapy. The Wilms' tumor 1 (WT1) protein is immunogenic, has been detected in almost all types of malignancies, and has played a significant role in prognosis and disease monitoring. In this article, we review recent developments in the treatment of various types of cancers with the WT1 cancer vaccine; we also discuss theoretic considerations of various therapeutic approaches, which were based on preclinical and clinical data.
PENGARUH VARIASI FRAKSI VOLUME DAN ARAH SERAT PADA KOMPOSIT MATRIK RESIN POLYESTER BERPENGUAT SERAT PELEPAH LONTAR (BORASSUS FLABELLIFER) DENGAN PERLAKUAN NaOH 5% TERHADAP KEKUATAN UJI TARIK
Authors: Husaini Fachri , Respati Sri Mulyo Bondan , Dzulfikar Muhammad
Published: November 2020

Tanaman siwalan atau biasa disebut tanaman lontar adalah salah satu sebuah inovasi terbaru dalam pemanfaatan serat alam yang selama ini belum begitu banyak digunakan, siwalan atau lontar selama ini hanya masih dimanfaatkan pada buah dan daun lontar yang digunakan sebagai kerajinan, untuk pemanfaatan serat lontar belum begitu banyak dimanfaatkan karena belum banyak yang memahami akan kegunaan dan fungsi serat alam atau serat pada pelepah lontar. Dalam penelitian ini serat lontar adalah bahan utama dalam pembuatan komposit selain resin dan katalis, penelitian ini bertujuan untuk mengetahui kekuatan sebenarnya pada serat pelepah lontar dengan beberapa variasi dengan melakukan pengujian uji tarik pada komposit dengan bahan utama serat lontar, selain itu juga untuk mengetahui kekuatan nodulus elastisitas dan regangan pada komposit tersebut serta mengetahui sifat fisik pada spesimen tersebut dengan melakukan uji makro. Pembuatan komposit berawal dari pengambilan serat dari pelepah lontar yang sudah dipotong-potong sesuai ukuran dan sudah dikeringkan pada sinar matahari, setelah itu serat dilakukan perendaman pada larutan NaOH sebesar 5% selama 120 menit untuk menghilangkan lapisan lignin pada serat, setelah itu melakukan pembuatan spesimen uji tarik dengan variasi fraksi volume serat yang berbeda yaitu variasi fraksi volume serat 0%,5%,10%,15% , serta menggunakan variasi arah serat yang berbeda yaitu arah serat searah dan arah serat acak. Untuk nilai kekuatan rata-rata uji tarik didapat pada variasi fraksi volume serat 15% dan arah serat searah dengan kekuatan tarik sebesar 36,35 MPa, dengan nilai regangan sebesar 6,86%, sedangkan nilai kekuatan tarik terendah didapat pada fraksi volume serat 0% dengan kekuatan uji tarik sebesar 13,05MPa, dengan nilai regangan sebesar 5,32%.

Kata kunci: komposit, polyester, serat lontar, uji tarik
ANALISIS FILTER KERAMIK BERPORI BERBASIS ZEOLIT ALAM DAN ARANG SEKAM PADI DALAM MENURUNKAN KANDUNGAN PARTIKEL AIR SUMUR GALIAN
Authors: Mahfuzin Alam Nasroh , Respati Sri Mulyo Bondan , Dzulfikar Muhammad
Published: November 2020

Di Indonesia membran dari keramik berpori akhir-akhir ini mulai meningkat penggunaannya, karena membran dari keramik mempunyai kandungan kimia yang bagus, tahan terhadap panas dan kekuatan yang stabil. Bahan dan proses yang mahal membuat membran keramik mempunyai harga yang mahal. Sedangkan arang sekam padi sering dijumpai, mempunyai kemampuan daya serap (absorpsi) yang baik. Penelitian ini bertujuan mencampurkan bahan zeolit alam dan arang sekam padi untuk dibuat membran keramik berpori dengan harga murah. Campuran dari zeolit alam dan arang sekam padi ini dapat dipakai sebagai membran karena sifatnya yang unik secara fisika, kimia dan bersifat adsorben terhadap cairan. Zeolit alam dan arang sekam padi dicoba untuk dibuat membran keramik berpori. Pembakaran keramik berpori dilakukan pada suhu 900°C. Pada penelitian ini keramik berpori berbentuk silinder dan dapat diteliti porositas, mampu alir dan nilai TDS. Metode Archimedes digunakan untuk pengukuran densitas dan porositas. Uji laju aliran air dan Uji nilai TDS (Total Dissolved Solid). Dari pengujian yang dilakukan dapat diketahui, semakin banyak arang sekam padi sehingga nilai porositasnya semakin besar. laju aliran air semakin cepat dan nilai TDS air semakin kecil. Pada proses sintering arang sekam padi terbakar sehingga timbul rongga atau pori-pori di dalam material keramik. Hasil pengujian ICP menujukan penurunan yang signifikan terhadap unsur logam dimandikan air sebelum dilakukan penyaringan.

Kata kunci: arang sekam padi, sifat fisik,. zeolit murni
ANALISIS AERODINAMIKA PADA BODI MOBIL HEMAT ENERGI LINTANG SAMUDRA MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMICS
Authors: Prastyo Bagus Wahyu , Syafa’at Imam , Dzulfikar Muhammad
Published: November 2020

Aerodinamika kendaraan merupakan bentuk pergerakan aliran udara yang memberi pengaruh atau menyebabkan gaya kepada benda saat bergerak dengan kecepatan tertentu. Ada beberapa cara untuk mengetahui bentuk aerodinamika kendaraan. Pertama yaitu melakukan eksperimen dengan memasukkan kendaraan pada terowongan angin. Cara kedua yaitu menggunakan software CFD (Computational fluid dynamic). Dengan metode CFD peneliti dapat membuat berbagai bentuk desain tanpa mengeluarkan biaya tambahan. Penelitian ini bertujuan untuk mengetahui aerodinamika serta nilai Drag coefficient (CD) dan Lift coefficient (CL) pada bodi mobil Lintang Samudra. Simulasi dilakukan pada 4 kecepatan aliran udara yaitu 40, 50,60 dan 70 km/h. Simulasi menggunakan model turbulensi k-ɛ dengan intensitas 5%, model tersebut dipilih karena memiliki tingkat error terkecil terhadap validasi dari jurnal simulasi Bammidi dan Murty (2014) sebesar 0,13 %. Didapatkan hasil bodi Lintang Samudra 1 memiliki nilai CD

= 0,07598 - 0,07025 dan CL=(-0,00800) – (-0,00837) Pada bodi Lintang Samudra 2 memiliki nilai CD = 0,072451 - 0,067020 dan CL = 0,001395 – 0,000949. Terdapat perbedaan bentuk aliran fluida pada bodi Lintang Samudra 1dan bodi Lintang Samudra 2. Jadi bodi kedua lebih aerodinamis dari bodi pertama.

Kata kunci: aerodinamika, bodi, CFD, drag, lift.
Efficacy of chlorine dioxide as a disinfectant
Authors: Yee Shermaine , Lim Ya Chee , Goh Choon Fu , Kotra Vikay , Ming Long Chiau
Published: November 2020

Chlorine dioxide plays a significant role in the industrial settings as disinfectants due to its broad antimicrobial property. Despite commonly use as germicide, chlorine dioxide demonstrates a good safety profile, rendering its suitability for use at water treatment and food preparation zones. Protein denaturation including envelope proteins is the major mechanism of chlorine dioxide to inactivate microorganisms even at low concentrations. Adverse reactions are not widely reported due to the typical use at a low concentration. The effectiveness of chlorine dioxide against various microorganisms, in both liquid and gaseous forms, over a wide range of pH and at an extremely low concentration has confirmed chlorine dioxide as a vital and versatile disinfectant.
INNOVATIVE DRIVERS OF SELF-CONTROL IN ENTERPRISE MANAGEMENT
Authors: Panteleiev Volodymyr
Published: November 2020

Purpose. The aim of the article is to disclose the organizational aspect of self-control (setting tasks and sources of information) based on innovations.

Methodology of research. The following methods are used to achieve this goal: comparative law ‒ to study the regulations governing innovation in Ukraine; system approach ‒ in the process of studying the factors that affect self-control; systematization, grouping and abstraction ‒ for the formation of tasks and sources of information for the organization of self-control and the content of the test of the innovative project of self-control.

Findings. It is established that the main elements of innovations of self-control are methods and programs of self-control, modern software and means of automation of self-control, continuous training of employees. Indicators of efficiency of innovations at self-control are resulted. It is proved that the introduction of self-control based on innovations helps to strengthen the owner's control over capital. The test of the innovative project of self-control is offered. According to the stages of self-control, its tasks and necessary sources of information are determined.

Originality. The substantiation of the expediency of self-control on the basis of innovations in the management of the enterprise, in particular, at the expense of the offered test of the innovative project of self-control has got further development.

Practical value. The study is the basis for further development of self-control in the management of Ukrainian enterprises. The proposed test of the innovative project of self-control can be used in assessing the level of internal control of the enterprise. The proposals can be applied to most companies, with certain options for science-intensive operations, small businesses, etc.

Key words: self-control, managerial innovations, classification of innovations, test of innovative project of self-control.
ОСВІТА І НАУКА — ОСНОВА ІННОВАЦІЙНОГО ЛЮДСЬКОГО РОЗВИТКУ
Authors: КРЕМЕНЬ Василь Григорович , ЛУГОВИЙ Володимир Іларіонович , САУХ Петро Юрійович
Published: November 2020

На основі аналізу сучасної ролі освіти і науки для стійкого людського розвитку в контексті інноваційного типу прогресу обґрунтовано стратегічні цілі та завдання на довгострокову перспективу з формування людського потенціалу і капіталу в Україні. Аргументовано, що національні сфери освіти і науки в умовах глобальної конкуренції об’єктивно набувають ключового значення для характеру і ефективності суспільного поступу, економічного зростання, формування інноваційної людини. Систематизовано цілі, завдання і заходи у сферах освіти і науки, важливі для забезпечення людського розвитку.
Kinerja Perusahaan Perbankan Syariah Di Indonesia: Pembiayaan Murabahah, Musyarakah, Ijarah
Authors: Noor Muhammad , Anugrah M. Sahib Saesar , Firmansyah Amrie
Published: November 2020

Firm value is a reflection of market performance. Furthermore, firms can be observed by their operational performance. One of the essential aspects of operating performance is profitability. This study aims to analyze Murabahah, Musyarakah, and Ijarah on the firm performance on Sharia Bank. The firm performance consists of both operation performance, which is represented by profitability, and market performance, represented by firm value.

This research employs the quantitative method. This research used secondary data from sharia bank monthly reports from 2018 to 2020 obtained from IDX. Using purposive sampling, the selected samples in this research has 84 observation. The hypothesis examination used in this research is multiple linear regression analysis of pooled data. This study finds that murabahah has a positive effect on profitability, musyarakah has a negative effect on profitability, ijarah does not affect profitability, murabahah, and musyarakah does not affect firm value. In contrast, ijarah has a negative effect on firm value.

Keywords:  Murabahah, Musyarakah, Ijarah, Firm Performace.
INFLUENCE OF EXPRESSION OF THE NEONATAL FC-RECEPTOR (FCRN) ON THE SENSITIVITY OF THE CELLS TO NON-PATHOGENIC HUMAN ENTEROVIRUSES
Authors: Chumakov P.
Published: November 2020

In this work, the influence of the expression levels of the neonatal Fc receptor (FcRn) on the sensitivity of the human transformed and tumor cells to 15 non-pathogenic strains of human enteroviruses was shown. The Complete inactivation of the neonatal fc receptor gene FCGRT in cells led to loss of the sensitivity to Echoviruses 1, 6, 7, 11, 12, 25, 30, enterovirus 75.
DLINNOTSEPOCHECHNY FATTY ACIDS (EYKONOL) IN DIAGNOSTICS AND CORRECTION OF VIOLATIONS OF BRAIN BLOOD CIRCULATION AT DISTSIRKULYATORNY ENCEPHALOPATHIES
Authors: Simonenko S.
Published: November 2020

Research objective was assessment of influence of Eykonol on the cerebral blood flow (CBF) at ischemic heart disease patients in comparison with the most widespread cardiovascular drugs.
ULTRASONIC PROCESSING OF RABIES VIRUS SUSPENSION FOR OBTAINING ANTIGEN-CONTAINING PREPARATIONS FOR DIAGNOSTIC TEST SYSTEMS
Authors: Klyukina V. , Anisina O.
Published: November 2020

The effect of ultrasonic treatment of a virus-containing suspension on the purity of the rabies virus antigenic preparations was studied. It was found that the maximum yield of free of tissue and culture proteins virus is observed when processing 10-20% of the virus-containing suspension at a temperature not exceeding 8-10°C, processing time 3-5 min and a frequency of 30-40 kHz.
MICROMICETES ASPERGILLUS RAPERI AND SAROCLADIUM STRICTUM AS PRODUCERS OF ENZYMES WITH UROKINASE-LIKE PLASMINOGEN ACTIVATOR ACTIVITY
Authors: Kornienko E. , Osmolovskiy A.
Published: November 2020

Data were obtained on the general proteolytic activity of Aspergillus raperi and Sarocladium strictum and on proteolytic activity in relation to the main proteins of the hemostasis system (specific activity). It has been shown that Sarocladium strictum is a more promising strain producing enzymes with urokinase-like plasminogen activator activity due to the high specificity of this activity.
Knowledge, attitude, and perception of University students toward COVID-19 Pandemic
Authors: Gul Hina , Aasha Ijaz  , Atiqa Khalid  , Tabinda Khan
Published: November 2020

Background: An increasing rate of COVID-19 cases throughout the world has increased the need to investigate the knowledge, attitude, and perception (KAP) of university students toward the COVID-19 pandemic to prevent its rapid spread as public cooperation and awareness regarding prevention is the only way to deal with this pandemic. Methods: A retrospective cross-sectional study was conducted in Pakistan in April 2020. Data was collected by Google statistics and percent reliability was calculated through SPSS. Results: The number of respondents n=678, out of which 443(65.2%) were female and 235(34.85%) were male. The perception of students regarding this disease is shown in a table in which 33.2% of students consider it very dangerous. 54.2% thought it moderately dangerous. 62.38% of students consider muscle pain and 73.59% of students consider throat pain as a clinical presentation of COVID-19. 80.7% of students thought that exposure to a suspected case of COVID-19 serves as a means of acquiring COVID-19 infection. The most effective measure of prevention comes out to be hand washing and covering face during coughing and sneezing. The main cause of the spread is a lack of public awareness and cooperation. Social media campaigns are an effective means of educating students about quarantine and controlling its rapid spread. Conclusion: Researchers concluded that It’s the need of the hour to increase awareness related to protective hygienic measures, rapid spread, and providing reliable approaches through social media campaigns to manage this pandemic. We believe that students should be involved in educating their surrounding society.
A Case Report of Neonatal posthemorrhagic hydrocephalus in a premature infant.
Authors: Niraula Kiran , Ali Niyaf  , Dusooma Abdul Razzag  , Manoj Gautam  , Yujan Sapkota  , Ansa Mary Jose  , Hawwa Ashfa  , Megha Ghimire  , Mohamed Sajuan Mushrif
Published: November 2020

Background: Neurosurgical services in the Maldives began around five years ago, but the first neurosurgical center is responsible for various emergency and clinical neurosurgical services. Published literature on neurosurgery from the Maldives Islands is limited. It is imperative to report unique cases from isolated countries to promote diversity for readers across the globe. Case Presentation: We present a case of a ventriculo-subgaleal shunt placement in an extremely premature male baby with intra-ventricular hemorrhage, causing communicating hydrocephalus born at 22 weeks of gestation weighing 600 grams to a young primigravida. The shunt was performed in the first month of life (780 grams) for communicating hydrocephalus secondary to the germinal matrix bleed into the ventricles. Conclusion: Ventriculo-subgalel shunt under local anesthesia is a promising measure to treat hydrocephalus in pre-term very low birth weight infants secondary to germinal matrix hemorrhage.
Audit of Genito-Anal Injuries in male and female sexual abuse cases - A retrospective study.
Authors: Gill Saima , Sarah Mohsin  , Sarah Arif  , Nimra Mumtaz
Published: November 2020

Background: Sexual assault is a global issue wherein timely examination of sexual assault victims by medico-legal officers and an understanding of the characteristics and factors influencing their injuries have a crucial impact on medico-legal evidence collection and its use in the court. Genital injury findings improve the level of justice for victims, but the lack of injury does not negate the possibility of sexual violence incurred on the victim. The following study describes in great detail the different factors associated with injury characteristics and the medico-legal importance of all these factors. Methodology: It was a retrospective descriptive study conducted at the Forensic Medicine Department of King Edward Medical University, Lahore, Pakistan. All the cases included that fulfill the predefined inclusion criteria were included. A record chart was designed, and six years’ data was recorded in it from the medical records of the medico-legal clinic. It was entered and edited manually. Methods used to prevent data entry errors included double entry and validation following data entry Difference of proportions between variables, where appropriate, has been calculated by Pearson Chi-Square test and Fischer Exact test at 95% confidence interval. Data were analyzed using SPSS v23. All procedures performed in this study involving human participants were following the ethical standards of the institutional and/or national research committee and the Helsinki declaration. Results: Genito anal injury was present in 28.2% cases and was absent in 71.8% cases. Most of the victims were aged 11 to 15 years. The most common injury in the victims was a tear. In females, the most common injury site was the vagina, while the perianal area was the most injured site in males. There was a significant relation (p<0.05) between type and site of injury, gender, site of injury, and prior sexual intercourse experience and prevalence rate of injury. Conclusion: This study concludes that the presence of injuries in the Genito anal area is suggestive of sexual assault and provides useful court evidence.
Toward Solving the Puzzle: Dissecting the Complex Merger A521 with Multiwavelength Data
Authors: Yoon Mijin , Lee Wonki , Jee M. James , Finner Kyle , Smith Rory , Kim Jae-Woo
Published: November 2020

A521 has been a subject of extensive panchromatic studies from X-ray to radio. The cluster possesses a number of remarkable features, including a bright radio relic with a steep spectrum, more than three distinct galaxy groups forming a filament, and two disturbed X-ray peaks at odds with the distant position and tilted orientation of the radio relic. These lines of evidence indicate a complex merger. In this paper, we present a multiwavelength study of A521 based on Subaru optical, Hubble Space Telescope infrared, Chandra X-ray, Giant Metrewave Radio Telescope radio, and Multiple Mirror Telescope optical spectroscopic observations. Our weak-lensing (WL) analysis with improved systematics control reveals that A521 is mainly composed of three substructures aligned in the northwest to southeast orientation. These WL mass substructures are remarkably well-aligned with the cluster optical luminosity distribution constructed from our new enhanced cluster member catalog. These individual substructure masses are determined by simultaneously fitting three Navarro–Frenk–White profiles. We find that the total mass of A521 modeled by the superposition of the three halos is

, a factor of 2 higher than the previous WL measurement. With these WL mass constraints combined with X-ray and radio features, we consider two merging scenarios, carry out the corresponding numerical simulations, and discuss the strengths and weaknesses of each case.