bluuebunny/crossref_metadata_2025 huggingface dataset:
Encouragement of Class Magnitude on Student Triumph in Erudition of English Language
Authors: Onojah Adenike Aderogba , Onojah Amos Ochayi , Jayeosimi Doctor
Published: July 2023

The environment which students engage in academic activities need to be reviewed to be up to the standard which students learning would not be jeopardized. Class size determines the number of students in a particular class. This study aims to analyze the influence of class size on student success in learning of English language and the relationship that existed between class size and their students’ academic performance in English Language. This study was an experimental study and harness if students’ achievement in English language correlates with their teachers’ quality. 200 English language students were sampled across schools. The statistical analysis used in the study was the mean, standard deviation and PPMC. The findings established that there was significant influence of class size on student success in learning of English language. The study concluded that the larger the number of students in class, the better the academic success of students in English language. It was however recommended that an average class size as recommended by the National Education scheme/board Commission be adhered to in Nigerian schools.
The Impact of Motivation and Foreign Language Anxiety on Speaking Performance of Prospective English Teachers
Authors: Adiwijaya Pande Agus
Published: July 2023

This study aims to investigate the impact of motivation and foreign language anxiety (FLA) on the speaking performance of prospective English teachers at one of Indonesia's universities of education. This study is an associational research using multiple linear regression analysis. The participants in this study were students who took Speaking Course I and 67 students were selected as the sample. All data in this study were collected using AMTB & FLCAS questionnaires and speaking tests. The results showed that most of the students had high motivation and FLA in Speaking Course I. In addition, the results showed that FLCAS and AMTB had high motivation and FLA. In addition, the results showed that F (df1=2, df2=64) = 4.080, p < 0.05 which means that motivation and FLA affect students' speaking performance with adjusted R2 = 0.085. Both variables statistically contribute to speaking performance as indicated by t(AMTB) = 2.028, p < 0.05 and t(FLCAS) = -2.580, p < 0.05.
SISTEM PENDUKUNG KEPUTUSAN EVALUASI KINERJA MITRA BISNIS DISTRIBUTOR MAINAN MENGGUNAKAN METODE SMART BERBASIS WEB
Authors: Abidin Khoerul
Published: July 2023

Pesatnya perkembangan teknologi membuat hampir semua pekerjaan manusia menjadi lebih mudah karena dibantu teknologi. Salah satu usaha yang membutuhkan pemanfaatan teknologi informasi adalah usaha di bidang distributor mainan dan aksessoris. TS Toys & Accessories adalah distributor yang menitipkan barangnya kepada mitra bisnis yaitu toko disekitar untuk dijual ke konsumen. Dengan melayani sekitar 50 toko dan stok barang yang terbatas membuat pemilik usaha kesulitan mengevaluasi kinerja mitra bisnis untuk menentukan kelanjutan kerjasama. Dengan memanfaatkan teknologi yang baik dan benar, dapat dikembangkan sebuah sistem pendukung keputusan menggunakan metode SMART. Sistem ini dapat menjadi solusi dalam melakukan evaluasi kinerja mitra bisnis. Untuk mendapatkan hasil evaluasi kinerja mitra bisnis, dibutuhkan perhitungan metode SMART dengan setiap kriteria memiliki bobot untuk menggambarkan kepentingannya. Hasil evaluasi didapat berdasarkan nilai akhir setiap alternatif. Sistem ini berguna untuk mengolah data mitra bisnis, hingga akhirnya menghasilkan kinerja setiap mitra bisnis. Diharapkan sistem ini dapat membantu pemilik usaha dalam mengambil keputusan yang tepat dari hasil evaluasi.
Induksi Poliploid Planlet Pisang Kepok Batu Dengan Media Kultur Jaringan
Authors: Sabana Amaliya , Ernawiati Eti , Priyambodo Priyambodo , Agustrina Rochmah
Published: July 2023

Colchicine is often used in plant breeding to induce mutations and produce polyploid plants with superior traits. Cytologically polylpoid plants have variations in shape, number of chromosomes and larger cell sizes. The use of colchicine in kepok batu bananas is expected to produce polyploid banana kepok batu plants. The purpose of this study was to determine the effect of colchicine compounds on mitotic abnormalities, changes in chromosome number, decreased mitotic index, and the number and length of roots in banana kepok batu plantlets formed on tissue culture media. The research was carried out at the Botanical Laboratory, Department of Biology, FMIPA Unila. This study compared cytology with the squash method between root tip cells of banana kepok batu plantlets after the addition of 0.1% colchicine with controls. Data were analyzed descriptively and displayed in the form of tables and bar charts. The results showed that administration of 0.1% colchicine resulted in mitotic abnormalities (mitotic abnormalities) and increased the number of chromosomes in the control 2n=3x or 33 and 0.1% colchicine treatment, namely 2n=3x+6 or 39. The mitotic index decreased, but averaged – the average number of roots was more and their size was longer than the control. From these results it can be concluded that the administration of 0.1% colchicine was able to induce polyploid cells in banana kepok batu plantlets.AbstrakKolkisin sering digunakan dalam pemuliaan tanaman untuk menginduksi mutasi dan menghasilkan tanaman poliploid dengan sifat unggul. Secara sitologi tanaman polilpoid memiliki variasi bentuk, jumlah kromosom serta ukuran selnya lebih besar. Penggunaan kolkisin pada pisang kepok batu diharapkan dapat menghasilkan tanaman pisang kepok batu poliploid. Tujuan penelitian ini untuk mengetahui pengaruh senyawa kolkisin terhadap abnormalitas mitosis, perubahan jumlah kromosom, penurunan indeks mitosis, serta jumlah dan panjang akar pada planlet pisang kepok batu yang terbentuk pada media media kultur jaringan. Pelaksanaan penelitian di Laboratorium Botani Jurusan Biologi FMIPA Unila. Penelitian ini membandingkan sitologi dengan metode squash antara sel ujung akar planlet pisang kepok batu setelah penambahan kolkisin 0,1% dengan kontrol. Data dianalisis secara deskriptif dan ditampilkan dalam bentuk tabel serta diagram batang. Hasil penelitian menunjukkan bahwa pemberian kolkisin 0,1% memunculkan kelainan mitosis (abnormalitas mitosis) serta meningkatkan jumlah kromosom pada kontrol 2n=3x atau 33 dan perlakuan kolkisin 0,1% yaitu 2n=3x+6 atau 39. Indeks mitosisnya menurun, namun rata – rata jumlah akar lebih banyak dan ukurannya lebih panjang dibandingkan dengan kontrol. Dari hasil tersebut dapat disimpulkan bahwa pemberian kolkisin 0,1% mampu menginduksi sel – sel poliploid pada planlet pisang kepok batu.
The development of a virtual reality adventure game to prepare for a tsunami disaster
Authors:   Naresuan University, Faculty ofArchitecture, Art and Design, Division of Innovative Media Design, Phitsanulok, Thailand, Doungutha Chawalit , Theppituck Tatiya ,   Naresuan University, Faculty of Architecture, Art and Design, Division of Product and Package Design, Phitsanulok, Thailand
Published: July 2023

This research aimed to study and analyse the interaction between humans and a tsunami disaster simulation. Besides, it aimed to develop a virtual reality (VR) adventure game in regard to preparing for a tsunami disaster caused by an earthquake. It also assessed the effectiveness of virtual reality (VR) through three perceptions, namely visual perception, auditory perception, and kinesthetic perception with the connection between the human user and the Oculus quest 1 (VR glasses) to create virtual reality that was easy to understand and reflected interesting storytelling accompanied by beautiful patterns. The research objectives were 1) to study, collect, and analyse data related to the concept of creating virtual reality (VR), 2) to design and create virtual reality (VR) adventure game, and 3) to test and assess the perceptions of virtual reality (VR) to prepare for a tsunami disaster caused by an earthquake. The results of studies and analysis based on the learning style theory and participants’ behaviour showed that the behaviour was often instilled from experiences that they had gained. This created clarity in the role of the participants and helped them learn and practice using virtual reality technology in training and deal with tsunami disasters caused by earthquakes. The results of the perception assessment of the virtual reality (VR) prototype, overall, indicated that the adventure game in a virtual reality (VR) setting to prepare for a tsunami disaster caused by an earthquake was feasible for use.
Legibility: Sinhala typeface featuresfor Directional Informative Sign Boards
Authors:   University of Moratuwa, Katubedda, Moratuwa, Sri Lanka, Eramudugolla Shyanika , Samarawickrama Sumanthri ,   University of Moratuwa, Katubedda, Moratuwa, Sri Lanka
Published: July 2023

Typefaces designed for the purpose of directional informative sign boards (DISB) communicate legible information related to drivers and passengers to navigate within road systems to: maintain road discipline and assist drivers to make instant decisions within a short period while operating a vehicle. The legibility of these typefaces works as a fundamental requirement. The reader's preference test (RPT) highlights that a typeface is unique due to its visual features–the anatomy of a typeface and it influences legibility performance, comprehension, memorability, priming, persuasion, perceptual fluency, and practical usage. This visual perception and the neurotic process of connecting human vision and brain is the intellectual cognition between; reader and information that acutely affects the reader to process information. When considering the amount of research work towards the advancement of DISB and typefaces designed for this purpose is at large within the western context, and more evident in Latin script but lacks in scripts such as Sinhala and Tamil within the Eastern regions. To fill this knowledge gap, the research contributes to Sinhala script discussed within the domain of typography research and proposes a draft typeface for Sri Lankan DISB. Considering legibility to be a required key factor in typefaces designed for the purpose of DISB the research methodology was structured into three stages. The first stage reviews legibility test methods, its measurements, testable factors usability and identifies the most relevant test to analyse typeface features. This section concludes by identifying RPT as the most relevant test with two variables: typeface personality traits and anatomy. Second stage adopts the two variables and tests six Sinhala typefaces that contain personality traits required for DISBs. It concludes with the identification of three typefaces that contain the required personality traits for DISB. The third stage analyses the anatomy of the three typefaces and proposes a draft Sinhala typeface for DISB. This stage redefines the two variables specific to Sinhala script and typography research. The stage concludes with a summary of the anatomical features of the proposed draft typeface and confirms a list of anatomical features required for Sri Lankan DISBs. The research also contributes to devel-oping a methodology to analyse Sinhala typefaces, and draft new typefaces for specified communicative purposes. As for further research, the research the draft typeface to be developed and tested to font and to adapt to similar scripts and advanced typography research
Developing prototypes of the assistant opener of packaging for consumer accessibility
Authors:   Prince of Songkla University, Faculty of Agro-Industry, Program of Packaging and Material Technology, Center of Excellence in Bio-Based Materials and Packaging Innovation, Songkhla, Thailand, Nilmanee Somporn
Published: July 2023

The purpose of this research was to focus on the design of packaging openers for consumer access to the contents. The packaging opener was created to make opening easier and safer. In this study, online questionnaires were used to investigate the problems and solutions of user experiences when opening packaging. According to the findings, a major issue among the responding participants is that they should have a strong hand force. However, the hand force not only had enough energy to open the packaging, but it was also unable to open the closure at the specified location. When participants encountered opening problems, they preferred to use an assistant tool rather than ask for assistance. The risk of packaging materials, scissors, knives, and wrist and finger twisting occurred during opening packaging. According to the respondents' experiences, the four functions of the packaging opener were integrated together for the corrugated box, ring-pull a can, lug cap closure, and flexible packaging. As a result, the newly designed packaging opener required less opening force, a safer hold, and optimized hand ergonomics. The attractive configuration and comfortable grip were also important factors to consider when designing the packaging openers in this study. Opener prototypes were modelled using SolidWorks and were formed by a 3D printer. The FSUDE system was employed to evaluate the functions, safety, usability, design, and engineering of all prototypes. Based on the results of this study, form, dimension, surface, friction, and grip posture were factors affecting torque force exertion, slitting and cutting force, and openability of consumers.
Analysis of factors and construction of prognostic quality models of flexographic printing process of packaging with solvent based inks
Authors:   Ukrainian Academy of Printing, Lviv, Ukraine, Repeta Vyacheslav , Kukura Тetiana ,   Ukrainian Academy of Printing, Lviv, Ukraine, Havrylyshyn Volodymyr ,   Lviv University of Trade and Economics, Lviv, Ukraine, Kukura Yurii ,   Ukrainian Academy of Printing, Lviv, Ukraine
Published: July 2023

The presented article shows the results of the analysis of the factors influence on the flexographic printing process with solvent based inks. The main factors influencing the printing process quality are identified, a semantic network of influence and dependencies of these factors is constructed. The priority of factors, taking into account their influences and dependencies, is established by the ranking method. Using the Pareto rule and the construction of the corresponding diagram, four main factors are identified, the influence of which provides 70 % of the studied process quality. It is established that the most priority factors are the parameters of the printing plate, the rheological parameters of the ink, the lineature of the anilox roller and the surface properties of the material to be printed, with the following calculated values: 150, 120, 105 and 90 units, respectively. The selected factors are used to analyse their impact on the flexographic printing process by means of fuzzy logic. Accordingly, a universal set, corresponding terms and a fuzzy knowledge base with the condition "If-Then" are established for these factors in the form of linguistic variables. The formed knowledge base is tested with the help of the Fuzzy Logic Toolbox package of the Matlab technological computing environment and the corresponding prognostic models of the influence of the selected factors on the printing process quality are constructed.
MODAL ANALYSIS OF MOTORIZED SPINDLE USING FINITE ELEMENT METHOD
Authors:   University of Novi Sad, Faculty of Technical Sciences, Department of Production Engineering, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia, Knezev Milos , Zivkovic Aleksadar ,   University of Novi Sad, Faculty of Technical Sciences, Department of Production Engineering, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia, Marinkovic Dejan ,   University of Novi Sad, Faculty of Technical Sciences, Department of Production Engineering, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia, Mladjenovic Cvijetin ,   University of Novi Sad, Faculty of Technical Sciences, Department of Production Engineering, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia, Andrei Calin ,   Politehnica University of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Department of Machine Elements and Tribology, Splaiul Independentei no. 313, sector 6, Bucharest, Romania, Ilic Vojin ,   University of Novi Sad, Faculty of Technical Sciences, Department of Production Engineering, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Published: July 2023

Dynamic market conditions shows contant need to significantly shorten the time cycle of the product design phase, with demands for the lowest possible price and highest possible quality. Motorized spindle is already widely used as the main spindle of modern machine tools. Predict dynamic characteristic through numerical simulations is trend among machine tool manufacturers, especially when high accuracy is involved. Finite element method (FEM) is the most commonly used method for analyzing the dynamic behavior of the main spindle. In this work, a model was developed based on the finite element method. The obtained results are compared with experimental test.
Stage-by-stage correction of aortic coarctation in low-weight newborns (first experience)
Authors: Nokhrin A. V. , Komissarov M. I. , Alyoshin I. Yu. , Trizna E. V. , Popova L. L. , Murashova O. A. , Gvozd E. M. , Ivanov D. O.
Published: July 2023

Aortic coarctation in low-weight (less than 2.2 kg) and premature newborns with comorbid conditions is still a current problem of neonatology and cardiac surgery. The closure of the patent ductus arteriosus and the inability to maintain its functioning with prostaglandin medication leads to fatal complications due to a violation of systemic perfusion. Surgical intervention in this group of patients has extremely high risks and unsatisfactory results. In such situations, stage-by-stage correction is a promising direction. Stenting of aortic coarctation allows restoring hemodynamics at the level of the aortic isthmus with minimal risks. In the inter-stage period, it becomes possible to treat comorbid conditions and prepare a patient for radical correction.
Approaches to the assessment of indirect economic damage from changes in the level of Lake Baikal
Authors: MIKHEEVA Anna S. , MAKSANOVA Lyudmila B.-Zh. , BARDAKHANOVA Taisiya B. , IVANOVA Sembrika N. , LUBSANOVA Natal'ya B. , AYUSHEEVA Svetlana N.
Published: July 2023

Subject. The article considers methodological approaches to the definition of the concept and assessment of indirect economic damage from changes in the level of Lake Baikal.
Objectives. The aim is to analyze the adequacy and practical suitability of methodology for assessing the probabilistic damage from harmful effects of water and the effectiveness of preventive water management measures, developed by the All-Russian Research Institute of Economy and Exploration of Mineral Resources (VIEMS).
Methods. On the basis of comparative analysis of results obtained under the direct counting method and those under the VIEMS methodology, we underpinned the adequacy of the latter.
Results. We used the case of Nizhneangarsk settlement to make estimates of indirect economic damage under the method of direct counting and the VIEMS methodology. The results are comparable, and this enables to speak about the adequacy of the VIEMS methodology .
Conclusions. The comparative analysis demonstrates the reliability of results of assessing the indirect economic damage, obtained using the VIEMS methodology. Significant labour intensity, complexity, and often impossibility of estimation by the direct counting method make it possible to substantiate the feasibility of practical application of the VIEMS methodology for assessing indirect economic damage from the negative impact of waters.
Pengaruh Perubahan Sistem Pemasukan Bahan Bakar dan Rasio Kompresi Motor Bakar 4-Tak Single Cylinder terhadap Torsi dan Daya
Authors: Azhar Faruq Avero
Published: July 2023

Teknologi injeksi adalah suatu sistem pemasukan bahan bakar pada kendaraan bermotor dengan cara disemprotkan. Penyemprotan bahan bakar dikontrol menggunakan komponen elektronik untuk mempertahankan keseimbangan campuran udara dan bahan bakar. Campuran udara dan bahan bakar yang seimbang dapat meningkatkan performa kendaraan dan mengurangi emisi gas buang yang dapat merusak lingkungan. Pada penelitian ini telah dilakukan modifikasi sepeda motor dengan sistem pemasukan bahan bakar karburator menjadi sistem injeksi dan diamati perubahannya terhadap torsi dan daya. Selain modifikasi sistem pemasukan bahan bakar, dilakukan juga pengamatan terhadap perubahan rasio kompresi. Hasil pengujian menggunakan dynotest menunjukkan terjadi peningkatan torsi pada sepeda motor dengan sistem pemasukan bahan bakar injeksi dan rasio kompresi 9:1 sebesar 8,5% dibandingkan dengan sistem pesakukan bahan bakar karburator, sedangkan untuk rasio kompresi 10:1 mengalami peningkatan sebesar 14,8%. Pengamatan pada daya menunjukkan peningkatan sebesar 15,7% pada rasio kompresi 9:1 dan 18,3% pada rasio kompresi 10:1.
PREVISIBILIDADE DE PREÇOS DAS PRINCIPAIS COMMODITIES AGRÍCOLAS BRASILEIRAS
Authors: Perez Casagrande Caio , Rauter Menezes Gabrielito
Published: July 2023

O Brasil se destaca como um dos principais produtores de commodities agrícolas do mundo, sendo as suas exportações responsáveis por uma grande parcela do Produto Interno Bruto (PIB) nacional. Dentro deste contexto, o presente trabalho visa ajustar o melhor modelo Autorregressivo Integrado de Médias Móveis (ARIMA) para a previsão dos preços da soja, milho e café arábica, as principais exportações agrícolas brasileiras. O objetivo é auxiliar os produtores e demais agentes do agronegócio brasileiro em tomadas de decisões e em seus planejamentos operacionais. Assim, utilizou-se a série histórica mensal, entre março de 2006 e novembro de 2022, para prever o preço das commodities no curto prazo futuro. De acordo com os resultados, os modelos que se adaptaram para as previsões foram um ARIMA (0,1,1) para a soja, um ARIMA (1,1,0) para o milho e um ARIMA (1,1,0) para o café arábica.
Markdown & vous
Authors: Pochet Bernard
Published: July 2023

Avec le numérique et ce qu'il peut nous offrir mais aussi ce qu'il a tendance à nous imposer, il devient nécessaire de s'arrêter un moment. Ce manuel est consacrés à l'écriture académique avec Markdown et Pandoc. À la fois plaidoyer pour l'écriture numérique ouverte et introduction à Markdown et à Pandoc, il propose une réflexion sur nos outils et méthodes d'écriture académique. Il n'en est pas pour autant limité aux seuls débutants. L'idée est de revenir aux fondamentaux et donc de ne pas essayer de reproduire coûte que coûte tout ce qui est possible avec un traitement de texte classique (dont on peut se passer). L'objectif de ce manuel est d'expliquer pourquoi il est possible de changer ses habitudes pour rédiger, structurer ses idées, produire des documents de qualité et de montrer ce qui est possible avec Markdown au travers de quelques méthodes.
STUDY OF WAVE TRANSFORMATION AT COASTLINE CHANGE IN MENDALOK, SUNGAI KUNYIT SUB-DISTRICT, MEMPAWAH REGENCY, WEST KALIMANTAN
Authors: Kurniawan Rahmat , Danial Mochammad Meddy , Lestari Arfena Deah , Meirany Jasisca , Pratiwi Riyanny
Published: July 2023

As one of the coastal areas, Mendalok, Sungai Kunyit sub-District, Mempawah Regency faces problems caused by coastline changes such as administrative area changes and damage to the mangrove forest ecosystem in the region. The objective of this study is to determine the process of wave conversion leading to coastline changes and to determine the potential for coastline changes from 2021 to 2031. Coastline change modelling analysis is performed with the CEDAS-NEMOS application. The results showed that the wave movement pattern was dominated by the southwest and west with a significant wave height averaging 1.36 meters and the waves were broken with a wave angle of 208.09o. The result of the coastline change modelling shows that coastline changes are more dominant in the study area when experiencing abrasion with calibration values of K1 0.5 and K2 0.25. Predicting the coastline changes that will occur from 2021 to 2031 shows that the coast with the greatest abrasion value of 31.83 meters and some accretion is more dominant with the greatest accretion value of 11.21 meters.
PERFORMANCE ANALYSIS OF SMALL SCALE DESALINATION PLANT BASED ON MULTI TRAY AERATOR, MEDIA FILTER, AND SEAWATER REVERSE OSMOSIS
Authors: Danial Mochammmad Meddy , Purnaini Rizki , Khairi Syahrul , Setiawan Eric , Nadeak Raymond , Septiansyah Edo , Abshar Khairul
Published: July 2023

Seawater as abundant source for clean water is deemed as impossible task, particularly in developing country. Therefore, the feasibility of applying the reverse osmosis technology, particularly in the coastal area for drinking water is need further investigation. This paper aims to design and analyze the performance of small-scale desalination plant using combination of multi tray aerator, media filter, and multiple membranes consisting of ultrafiltration, brackish, and seawater membranes.Parameters used to verify the performance of small plant are salinity and total dissolved solid for membranes, while the parameters for examining the pre-treatment are Fe and Mn. The test results will be evaluated under the regulation of minister of health, Permenkes No. 32/2017. The influence of the pump pressure on the flow will also be analyzed.The result shows that the desalination plant can reduce the salinity concentration significantly from 10,200 ppm to 16 ppm, or 99.84%. The ratio of clean water to rejected water is 36%.  However, bacteria of E. Coli are still found in clean water, which is probably caused by biofouling.
TYPOLOGY OF CAR GLASS FILM TOWARDS CLIMATE IN ANTICIPATION TO GLOBAL WARMING
Authors: Irsan Robby , Fitrianingsih Yulisa , Soeryamassoeka SB.
Published: July 2023

Climate change has a significant impact on the socio-economic and development of Indonesia. Transportation in this study is related to cars where cars require a lot of fuel consumption. Window Film is able to reject Infrared from sunlight which ensures that the car cabin will feel cooler can help overcome climate change. This study explains how the right type and and the percentage of window are used in the tropics to deal with global climate change. The purpose of this study was to analyze the parameters of temperature, wind speed, lighting, and noise originating from the outside of the car on the ability of each type of car window film to reduce heat. The research method used is the method of collecting data by taking data on the characteristics of temperature, lighting, wind speed and noise inside the car and outside the car which affect the window film. The results of scoring the noise quality standard using the application from SPSS using Crosstab, the quality standard is at a Moderate level between 56-65 db(A), the quality standard lighting level is at a Moderate level between 500-999 Lux, the wind speed to humans is at a very high level. The average score between Effective Temperature and Minimum Humidityis 24.46°C with 63% Humidity. Typology of 40% window film with a combination of glasswall dampers is able to reduce the value of climate parameters from outside the car.
The Impact On Street Parking At Jalan Alianyang Kota Pontianak
Authors: Indigo Joerka Wednesday , Said Said , Kadarini S. Nurlaily , Mukti Elsa Tri , Sumiyattinah Sumiyattinah
Published: July 2023

The development of activities on Jalan Alianyang, Kota Pontianak causes problems,namely the decrease in mobility on the road. This is due to the unavailability of a separateparking area for each of the facilities mentioned above, so parking is carried out using theroad. This causes a reduction in road capasity and causes a decrease in speed for passingvehicles. The purpose of this study is to determine the condition of parking on JalanAlianyang Pontianak in the form of available parking spaces, and the parkingcharacteristics of vehicle owners, to determine the magnitude of side friction due to onstreet parking, getting a road performance value by considering on street parking. Themethod used is based on MKJI (1997) and the Technical Guidelines of the DirectorateGeneral of Land Transportation (1998). Data collection in this study includes primary dataobtained from survey research in the field which includes geometric data on JalanAlianyang, traffic volume data, vehicle speed data, side friction data, and patrol parkingdata. The secondary data was obtained from the Mayor's Decree on Pontianak City Roadon Parking in Kota Pontianak and data from the Pontianak City Population and CivilRegistration Agency. The study was conducted for 4 days on June 24 to 27, 2022 on theJalan Alianyang segment between Jalan Pangeran Natakusuma and Jalan Suwignyo from06.00 to 21.00 WIB. From the results of the analysis can be concluded that the highestaccumulation of hourly parking on weekdays 45 motorcycles and 30 cars, on weekends40 motorcycles and 12 cars. The largest parking volume on weekdays is 1043 vehicles, onweekends is 780 vehicles. The highest average parking index along 200 m is 80% whichmeans that not all road segments are used as parking lots. The performance of road sectionswithout on street parking shows a level of service C and a degree of saturation of 0.45.Meanwhile, with the influence of on street parking with a level of service F and a degreeof saturation of 1.01. Based on parking needs, it can be considered using one side of theroad with good parking management so that parking and mobility needs can be balanced.
ANALYSIS OF WATER DISTRIBUTION SERVICES BY PERUMDAM TIRTA KHATULISTIWA IN PONTIANAK BARAT SUB-DISTRICT USING EPANET
Authors: Pratama Andikha , Yulianto Eko , Gunarto Danang , Soeryamassoeka S B
Published: July 2023

PERUMDA Air Minum Tirta Khatulistiwa distributes clean water in Pontianak Barat District. Services are divided into several zones, one of which is zone H which includes Pal Lima Village and Sungai Beliung Village. only 63.82% of the population is served with a pumping capacity of 100 liters/second, based on this data, the service in zone H is not optimal. Population growth results in a lack of clean water in zone H at peak hours, so it is necessary to analyze water needs for existing conditions and conditions for the next 20 years. Population projection using Arithmetic, Geometric and Least Square methods. Analysis of water demand in zone H is calculated for domestic and non-domestic water, distribution network analysis is carried out using the Epanet program. Network analysis is simulated into 5 conditions. The results of the study found that the demand for clean water for the existing served population was 63.82% at 110.20 liters/second and the existing condition for the served population was 90% at 145.78 liters/second, while the need for clean water in the next 20 years was 341.43. liters/second. Short-term improvements that can be made are to increase the exsisting pumping capacity to 200 liters/second, while the long-term improvements are to increase the exsisting pumping capacity to 400 liters/second and pump head to 40 m, adding a booster in zone H with a pumping capacity of 200 liters. /second and pump head 30 m
PRODUCTIVITY ANALYSIS OF EXCAVATOR AND DUMP TRUCK HEAVY EQUIPMENT ON DIGGING AND LOADING WORKS FLOOD CONTROL AFVOER WATUDAKON MOJOKERTO
Authors: Rafi Yudha Fatkur , Witjaksana Budi
Published: July 2023

Heavy equipment is a vital resource in a project, but renting heavy equipment is a costly undertaking. Besides that, a project always has constraints that allow the project completion time to exceed the specified time, and delays will also cause costs incurred to increase. So from the calculation of the productivity of heavy equipment, it is necessary so that the tool can work optimally. From the analysis results, it was found that the productivity of excavators was 154.185 m3/Hour. For dump trucks, it was 37.99 m3/Hour, then calculating the duration of work. For heavy equipment excavators, it took 454 Hours, and for dump trucks, it took 263 O'clock. For the cost of renting heavy equipment from the calculation of the analysis of the cost of renting heavy equipment for excavators, a value of Rp.1,985,200/Day is obtained, while for dump trucks, it is Rp.2,578,000/Day
WATER LEVEL PROFILE IN PARIT BERKAT DRAINAGE CHANNEL OF PUNGGUR BESAR
Authors: Riandini Alfi , Nurhayati Nurhayati , Soeryamassoeka S.B.
Published: July 2023

Floods are common natural catastrophes in Indonesia, particularly during the rainy season. The Parit Berkat water catchment region is one of the locations that frequently experience flooding. The channel's capacity must be increased to accommodate the current water discharge, resulting in this condition. Several reasons are responsible for the diminished capacity of the canal. For instance, inhabitants' activities along canal banks might contribute to the siltation of channels. This research aimed to evaluate the influence of tides and rainfall on the flow of the Parit Berkat Canal. This research provided the use of both primary and secondary data. The leading information consists of measurements of the cross-section and length of the channel and the elevation of the tidal water level over 15 days. Secondary data consists of the maximum daily rainfall data received from Balai Wilayah Sungai Kalimantan I (BWSK I) and the location map for the research. The flow profile is simulated using HEC-RAS. The findings demonstrate that when maximum rainfall and low tides coincide, 13 stations are safe in the 2-year return period of rain, eight stations are safe in the 5-year return period, and six stations are safe in the 10-year return period.
Basic residues at position 11 of α-conotoxin LvIA influence subtype selectivity between α3β2 and α3β4 nicotinic receptors via an electrostatic mechanism
Authors: Haufe Yves , Kuruva Veeresh , Samanani Ziyana , Kamnesky Guy , Lokaj Gonxhe , Shadarmarshan Pranavkumar , Shahoei Rezvan , Katz Dana , Sampson Jared , Pusch Michael , Brik Ashraf , Nicke Annette , Leffler Abba
Published: July 2023

Understanding the determinants of α-conotoxin (α-CTX) selectivity for different nicotinic acetylcholine receptor (nAChR) subtypes is a requisite for the design of tool compounds to study nAChRs. However, selectivity optimization of these small, disulfide rich peptides is difficult not only because of an absence of α-CTX/nAChR co-structures, but also because it is challenging to predict how a mutation to an α-CTX will alter its potency and selectivity. As a prototypical system to investigate selectivity, we employed the α-CTX LvIA that is 18-fold selective for the α3β2 nAChR over the closely related α3β4 nAChR subtype that is a target for nicotine addiction. Using two-electrode voltage clamp electrophysiology, we identified LvIA[D11R] that is 2-fold selective for the α3β4 nAChR, reversing its subtype preference. This effect is specific to the charge and not shape of LvIA[D11R], as substitution with citrulline retains selectivity for the α3β2 nAChR. Furthermore, LvIA[D11K] shows a stronger reversal, with 4-fold selectivity for the α3β4 nAChR. Motivated by these findings, using site-directed mutagenesis it was found that β2[K79A], but not β2[K78A], largely restores the antagonism of basic mutants at position 11. Finally, to understand the structural basis of this effect we used AlphaFold2 to generate models of LvIA in complex with both nAChR subtypes. Both models confirm the plausibility of an electrostatic mechanism to explain the data and also reproduce a broad range of potency and selectivity structure-activity relationships for LvIA mutants, as measured using free-energy perturbation simulations. Our work highlights how electrostatic interactions can drive α-CTX selectivity and may prove useful as a strategy for optimizing the selectivity of LvIA and other ⍺-CTXs.
Tuning morphology, stability and optical properties of CsSnBr3 nanocrystals through bismuth doping for visible-light-driven applications
Authors: Adib Md Asif , Sharmin Fahmida , Basith Mohammed
Published: July 2023

In this investigation, we have demonstrated the synthesis of lead-free, CsSnBr3 (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB′B) nanocrystals, with a stable cubic perovskite structure following a facile hot injection technique. The Bi substitution in CSB was found to play a vital role in reducing the size of the nanocrystals significantly, from 316±93 to 87±22 nm. Additionally, Bi doping has inhibited the oxidation of Sn2+ of CSB perovskite. A reduction in the optical band gap from 1.89 to 1.73 eV was observed for CSB′B and the PL intensity was quenched due to the introduction of Bi3+ dopant. To demonstrate one of the visible-light-driven applications of the nanocrystals, photodegradation experiments were carried out as a test case. Interestingly, under UV-vis irradiation, the degradation efficiency of CSB′B is roughly one order lower than that of P25 titania nanoparticles, however, it is almost five times higher when driven by visible light under identical conditions. Moreover, by employing experimental parameters, DFT-based first-principles calculations were performed, which demonstrated an excellent qualitative agreement between experimental and theoretical outcomes. The as-synthesized Bi-doped CSB might be a stable halide perovskite with potential in visible-light-driven applications.
Indoor Air Quality Implications of Germicidal 222 nm Light
Authors: Barber Victoria , Goss Matthew , Franco Deloya Lesly , LeMar Lexy , Li Yaowei , Helstrom Erik , Canagaratna Manjula , Keutsch Frank , Kroll Jesse
Published: July 2023

A known strategy for mitigating the indoor transmission of airborne pathogens, including the SARS-CoV-2 virus, is irradiation by germicidal UV light (GUV). A particularly promising approach is 222 nm light from KrCl excimer lamps (GUV222); this inactivates airborne pathogens, but is thought to be far less harmful to human skin and eyes than longer-wavelength GUV (e.g., 254 nm). However, the potential for GUV222 to affect the composition of indoor air has received little experimental study. Here, we conduct a series of controlled laboratory experiments, carried out in a 150 L Teflon chamber, to examine formation of oxidants and other secondary species by GUV222. We show that GUV222 generates ozone (O3) and hydroxyl radicals (OH), both of which can react with volatile organic compounds to form oxidized volatile organic compounds and secondary organic aerosol particles. Results are consistent with predictions from a simple box model based on known photochemistry. We use this experimentally-validated model to simulate the effect of GUV222 irradiation under more realistic indoor air scenarios, spanning a range of light and ventilation conditions. We demonstrate that under some conditions, GUV222 irradiation can lead to levels of O3, OH, and secondary organic products that are substantially elevated relative to normal indoor conditions, especially when ventilation is low and GUV222 intensity is high. Thus, GUV222 should be used at the lowest intensities possible and in concert with ventilation, decreasing levels of airborne pathogens while mitigating the formation of air pollutants in indoor environments.
Chemical Compatibilization, Macro-, and Microphase Separation of Hetero-Associative Polymers
Authors: Danielsen Scott
Published: July 2023

A mean-field equilibrium theory for reversible network formation due to heterotypic pairwise interactions in mixtures of associative polymers is extended via a weak inhomogeneity expansion to account for spatial fluctuations due to chemical incompatibility. We consider solutions and blends of polymers of types A and B with many associating groups per chain, and consider only A–B association between the groups. The structural correlations of the reversibly-bonded polymers are accounted for by considering the Gaussian 4-arm star-like chain conformations between cross-links, which is analogous to an affine-network assumption. Future extensions of this theory could further incorporate strand stretching from swelling or strong segregation. We show that the chemical incompatibility between A and B polymers drives a competition between associative and segregative phase separation. The addition of reversible A–B cross-links between incompatible A and B chains compatibilizes the mixture, minimizing the propensity for macroscopic phase separation into A- and B-rich phases. Under strong binding and segregation conditions, this results in eutectic-like behavior and local microphase segregation. The crossovers from macroscopic to microscopic phase separation occur at isotropic Lifshitz points, resulting in the potential for bicontinuous microemulsions. The reactive blending of such multifunctional polymers presents the opportunity to envision novel properties, processing conditions, and applications accessible by the tunable production of supramolecular complexes, mesophases, and multicomponent polymer networks.
Outcomes of the use of the glycosaminoglycan-peptide complex as monotherapy and in combination with diacerein for the treatment of knee osteoarthritis in real-world practice
Authors: Karateev Andrey E. , Polishchuk Elena Iu. , Potapova Alena S. , Matyanova Elena V. , Filatova Ekaterina S. , Glukhova Svetlana I. , Lila Aleksander M.
Published: July 2023

Background. Slow-acting symptomatic agents (chondroprotectors) in osteoarthritis (OA) combined therapy is a promising approach.
Aim. To compare the real-world results of combined therapy with glycosaminoglycan-peptide complex (GPC) and diacerein with GPC monotherapy in treating knee OA.
Materials and methods. Statistical analysis of the data obtained during the observational, non-interventional study was conducted. The study group included 9190 patients with OA, 69.0% females, age 60.911.4, with moderate/severe pain (4 using a 010 numerical rating scale). Of these, 6199 received a combination of GPC (Rumalon, at least 20 intramuscular injections per course) + diacerein (Diaflex Rompharm) 100 mg/day, and 2991 patients received GPC monotherapy. The following indicators were evaluated: the change of pain during movement, at rest, and at night, the overall health assessment (using a 010 numerical rating scale), the number of patients with a pain reduction of 50% from the baseline, the patient's assessment of the treatment result using a 05 scale, a decrease in the need for non-steroidal anti-inflammatory drugs 2 months after the start of therapy.
Results. The improvement of clinical indicators was more significant in patients who received a combination of GPC + diacerein, compared with GPC monotherapy: the decrease in pain during movement was 3.11.5 and 2.61.3, at rest 1 [0; 2] and 1 [0; 1], at night 2 [1; 4] and 2 [1; 3], the overall health assessment was 3.71.7 and 3.21.8, respectively (for all indicators p0.001). The percentage of patients with a 50% reduction in pain was 66.0 and 60.0% (p0.001), the assessment of treatment results was "good" or "excellent" in 62.1 and 42.9% (p0.001), a decrease in the need for non-steroidal anti-inflammatory drugs was reported in 60.9 and 57.1% (p=0.001) of patients, respectively.
Conclusion. The therapeutic effect of the combination of GPC + diacerein in patients with OA is significantly higher than that of GPC monotherapy.
Baker's cyst: etiopathogenesis, clinical picture, differential diagnosis of complications: A review
Authors: Lyalina Vera V. , Skripnichenko Elina A. , Borisovskaya Svetlana V. , Obyedkov Ruslan N. , Lazko Fedor L. , Yudin Roman Iu. , Saltykova Victoria G. , Nikitin Igor G.
Published: July 2023

Bakers cyst (BC) is a common condition and can be caused by both inflammatory and non-inflammatory disorders. Small BCs are usually asymptomatic and accidentally revealed. Large BCs present with pain and discomfort in the posterior knee as well as certain limitations of mobility. Large BCs may rupture resulting the fluid efflux down into the calf, which in turn presents with acute pain and number of potential thrombotic and neural complications. On another note, BC rupture requires differentiation with some urgent conditions such as venosus or arterial thrombosis, soft tissue infections etc. In this article we present some aspects of the etiopathogenesis, clinical signs and course of the BC. We also discuss the problematic issues of assessment and diagnostic work-up in case of BC ruptures.
Programación + Física: estrategia motivadora de aprendizaje en ingeniería de sistemas
Authors: Trejos Buriticá Omar Ivan , Muñoz Guerrero Luis Eduardo
Published: July 2023

Uno de los retos que tienen los docentes de las ciencias básicas consiste en conferirle significado a los conocimientos que comparten con los alumnos de ingeniería. Por su parte, los ingenieros docentes también tienen un reto, cuando se trata de enseñar a programar amén de los beneficios que ésta área trae desde la perspectiva de la apropiación del pensamiento computacional. El presente artículo expone los resultados de una investigación realizada con dos cursos en paralelo, uno de ellos con un tratamiento tradicional en donde asignaturas de ciencias básicas y asignaturas de programación van cada uno por su propio camino de conocimiento y otro con el cual se ha buscado el significado de la ciencias básicas en la programación y viceversa. Los resultados han sido sorprendentes para ambas áreas y han permitido advertir que si se capacita apropiadamente a los docentes de ambas áreas el gran beneficiado será el alumno que además de alcanzar los objetivos individuales de cada área podrán apropia el sentido y significado que tienen en su proceso de formación como ingenieros. Con el estudio se concluye que es necesario que los docentes de ciencias básicas y los ingenieros docentes de programación se articulen mutuamente para que sus asignaturas sean complementarias fundiéndolas temáticamente y poniendo a disposición de los estudiantes una fusión que es superior a sus partes.
Features of microcrystalline cellulose produced from sunflower seeds of different oil content
Authors: Battalova A.K. , Kabdrakhmanova S.K. , Akatan K. , Beisebekov M.M. , Kantay N. , Ibraeva Zh.E. , Mausumbayeva A.M. , Merck L.
Published: July 2023

The work is dedicated to study the production of the microcrystalline cellulose (MCC) from sunflower seed husks (SFH) by oxidation in an organic solvent, the dependence its hydromodule, yield and quality index of the MCC on the sunflower type. According to the morphological characteristics of SFH with different fat content, the effective hydromodulus of the MCC obtained from low-fat SFH is 1:12 g/mL with a yield of 50.69%, while the effective hydromodulus for high-fat SFH is SFH:PAA 1:14 g/mL, it was determined that the yield will be equal to 43.49%. During the organic solvent oxidation, it was found that low fat sunflower husk undergoes delignification 3 times faster than high-fat, accordingly, the yield of cellulose and the content of β-cellulose are higher by 7.2% and 2.23%. That is, it became known that low-fat sunflower seed husk is an economically and ecologically effective raw materials in the production of the cellulosic materials.