bluuebunny/crossref_metadata_2025 huggingface dataset:
Drugs associated with drug-induced hyponatremia
Authors: Listratov A. I. , Komarova A. G. , Aleshckovich E. V. , Velichcko M. V. , Ostroumova O. D.
Published: October 2021

Hyponatremia (HN) is a significant disturbance of the water-electrolyte balance in clinical practice. Drugs are one of the leading causes of low sodium level. Antidepressants, antiepileptic, antipsychotic, antineoplastic drugs and opioid analgesics are the most common medications that induce hyponatremia. Special attention should be paid to people with cancer, who often receive several drugs that induce HN. Risk factors for the development of drug-induced (DI) HN when taking most medications are female sex, weight loss, and old age. In persons receiving therapy with the listed drugs, it is necessary to assess the risk factors for a decrease in the sodium level, clinical manifestations from the nervous system, and to determine the sodium level in dynamics. Special care must be taken when treating elderly patients, since they have several risk factors for the development of DI HN. These measures will help prevent the development of HN and its severe and sometimes fatal complications.
Development of algorithm for risk assessment of the large ring road construction project around Kyiv
Authors:   National Transport University, Kharchenko Anna , Kotyk Daria ,   Kyiv Regional State Administration
Published: October 2021

One of the most important areas of development in Ukraine is the road sector. It belongs to the strategic sectors of the national economy, and the public road network is a significant component of Ukraine's infrastructure potential. The length and condition of road affects not only the safety and quality, mobility and employment, accessibility of educational and other services, but also causes changes in the temp and flow of capital in Ukraine, and is a necessary prerequisite for recovery competitiveness of the country's economy as a whole. Three international transport corridors pass through Ukraine, which are combined with four national transport corridors. They all pass through the Kyiv region. An urgent problem for Kyiv today is the construction of a Large Ring Road (hereinafter referred to as the "LRR") around Kyiv city, which should relieve the flow of transit transport through the capital of Ukraine, reduce harmful emissions from exhaust gases, and preserve the city roads from being destroyed by excessive vehicles, that are now creating a global city problem.
GEOELECTRIC MODEL OF THE VOSTOCHNO-SURGUTSOE FIELD JURASSIC RESERVOIR ACCORDING TO GALVANIC AND ELECTROMAGNETIC LOGGING SOUNDING DATA
Authors: Leonenko Artem R. , Petrov Aleksei M. , Sukhorukova Karina V.
Published: October 2021

The article presents the results of galvanic and electromagnetic well logs joint numerical inversion. Jurassic deposits are characterized by high contrast of electrical properties, resistivity anisotropy and dielectric polarization, that complicates modeling. Applying of modern methods of joint numerical inversion makes it possible to build detailed geoelectric models corresponding to the measured data in complex geological environments.
FORECAST OF GAS HYDRATE ACCUMULATION IN MEZSOZOIC SEDIMENTS OF CENTRAL YAKUTIA FCCJRDING TO ELECTROMAGNETIC SOUNDING DATA
Authors: Mamaeva Anna V. , Krupnov Evgeny V.
Published: October 2021

This article discusses the results of electromagnetic studies by the TEM method. They are made within the limits of Central Yakutia. The purpose of the research is to study the features of the geoelectric structure of the upper part of the section. The upper part of the cryolithozone was studied, its geoelectric characteristics were determined, talik zones were identified, as well as zones promising for detecting gas hydrate accumulations.
SUBSTANTIATION OF PHYSICAL EXPERIMENTS WITH ELECTROMAGNETIC TOOL IN THIN-LAYER MODELS SUBSEQUENT TO NUMERICAL SIMULATION RESULTS
Authors: Mikhaylov Igor V. , Nikitenko Marina N. , Surodina Irina V.
Published: October 2021

We performed 3D finite-difference simulation of electromagnetic signals from the logging tool with toroidal coils in electrolytic-tank-based thin-layer models. Following the simulation results, we elucidated the thicknesses and resistivities of the interlayers, for which the signals in a thin-layer and the equivalent macroanisotropic model coincide within the specified error.
INVERSION OF ELECTROMAGNETIC LOGGING DATA IN A CLASS OF MODELS WITH A SMOOTH RESISTIVITY DISTRIBUTION
Authors: Okunev Vladislav A. , Sobolev Andrey Yu.
Published: October 2021

The article presents an alternative geoelectric model of the near-borehole space for electromagnetic logging data inversion in the class of models with a smooth and piecewise linear distribution of the electrical resistivity. We used ready-made ATLAS MPhM calculation modules, a library for python developed at the IPGG SB RAS.
APPLICATION OF CALCULATION REGION DECOMPOSITION IN SOLVING MAGNETOTELLURIC SOUNDING PROBLEMS
Authors: Plotkin Valery V.
Published: October 2021

Using numerical experiments, possibilities of application the decomposition method of the calculation region in solving direct problems of the magnetotelluric sounding are considered.
DIGITAL IMAGE REDUCTION FOR EFFICIENT COMPUTATION TOPOLOGICAL CHANGES IN THE ROCK MATRIX
Authors: Prokhorov Dmitriy I. , Lisitsa Vadim V. , Bazaikin Yaroslav V.
Published: October 2021

The article describes the application of the digital image reduction algorithm to speed up the calculation of persistent diagrams that describe changes in the topology of the pore space of the rock matrix during the dissolution process. The dependence of the efficiency of the reduction algorithm on the properties of the rock sample and the value of the discrete time step is shown.
STUDY OF THE INFLUENCE OF GRAIN SIZE ON PETROPHYSICAL PROPERTIES AND NMR CHARACTERISTICS OF ARTIFICIAL SAMPLES
Authors: Golikov Nikita A. , Yanushenko Timofey А.
Published: October 2021

The article presents the results of studies of petrophysical properties and the study of samples by the method of nuclear magnetic resonance (NMR). The measurements were carried out on a collection of artificial core samples with different grain sizes. The procedure for preparing the samples is described, and the comparison of the results of measuring the petrophysical properties by different methods is given. The quantitative relationships between the size of the sand grains from which the samples are made, the filtration-capacity properties and the distribution of the relaxation times of the NMR spectrum of the samples are investigated.
3D MODELLING OF THE FAULT STRUCTURE IN THE SOUTHERN PART OF THE KURAISKAYA BASIN ACCORDING TO DIRECT CURRENT METHOD DATA
Authors: Sanchaa Aidisa M. , Surodina Irina V. , Nevedrova Nina N.
Published: October 2021

In this article we present the results of three-dimensional modeling of the fault structure of the Salgandui block of the Kuraikaya basin. The modeling included finding out the tilt angle of the fault plane displacer.
FIRST RESULTS OF STUDIES IN THE GORLOVSKAYA VALUES BY GROUND METHODS OF ELECTRIC EXPLORATION WITH CONTROLLED SOURCES
Authors: Sanchaa Aidisa M. , Nevedrova Nina N. , Babushkin Sergey M. , Shaparenko Ilya O. , Shalaginov Aleksandr E.
Published: October 2021

The article presents the first results of the study of the Gorlovskaya depression in the area of coal deposits of the Novosibirsk region by methods of ground electrical prospecting using transient electromagnetic sounding and electrical tomography. Near-surface models were obtained to depths of 100 m, as well as deep geoelectric characteristics of the sedimentary filling of the depression and the eastern fault boundary.
TO STUDY THE POSSIBILITIES OF USING THE SEISMOLOGICAL NETWORK OF THE ALTAI-SAYAN REGION FOR REGIME VIBRO-SEISMIC OBSERVATIONS
Authors: Solovyev Victor M. , Emanov Aleksandr F. , Elagin Semen A. , Galyova Natalya А.
Published: October 2021

The results of experiments on the study of the radiation characteristics of powerful vibrators and reception conditions at a number of seismic stations in the Altai-Sayan region in the range of distances of 50-450 kilometers in the problem of selecting points for active vibro-seismic monitoring are presented. It is shown that the real effective range of the CV-40 vibrator can be significantly increased by using multiple and semi-multiple harmonics. A method for assessing the applicability of stations for vibration monitoring using special programs for assessing the seismic background and seismic resonances within the boundaries of the location of seismic stations is proposed and tested.
TO STUDY THE POSSIBILITIES OF USING THE SEISMOLOGICAL NETWORK OF THE ALTAI-SAYAN REGION FOR REGIME VIBRO-SEISMIC OBSERVATIONS
Authors: Solovyev Victor M. , Salnikov Alexander S. , Seleznev Viktor S. , Kashubina Tatyana V. , Galyova Natalya А.
Published: October 2021

The results of deep seismic studies based on P - and S-wave data on the East-Stanov fragment of the reference 700-kilometer geophysical profile 8-DV are presented. Deep seismic sections of the upper crust (up to a depth of 20 km) with the distribution of the velocities of longitudinal and transverse waves are constructed. The P - wave velocities in the upper part of the section vary from 4-5 km / s within the Upper Zeya and Amur-Zeya depressions to 5.5-6.0 km/s within mountain ranges and plateaus; at depths of 10-20 km, lenses of high-velocity rocks up to 6.7-7.0 km/s are distinguished in the profile alignment. According to the S - waves in the upper part of the section, the velocity values are generally 3.0-3.2 km/s; reduced velocity values of 2.5-2.6 km / s are observed in the Upper Zey depression. At depths of 5-20 km within the section, according to the transverse wave data, a number of sections with reduced and increased velocity values are distinguished, respectively, up to 3.4-3.5 km/s and 3.75-3.8 km/s. The correlation of the selected anomalies according to the data of P-and S-waves is carried out.
FEATURES OF JOINT INVERSION OF NON-SIMULTANEOUS SIGNALS OF THE RUSSIAN LATERAL SOUNDING AND ELECTROMAGNETIC LOGGING IN CRETACEOUS RESERVOIRS
Authors: Sukhorukova Carina V. , Nesterova Galina V. , Primakov Sergey A.
Published: October 2021

The article presents the results of the study of the effect of the non-simultaneous measurement of electrical and electromagnetic logging signals on the determination of the parameters of the geoelectric model by joint numerical inversion. The radial profile of the electrical resistivity is calculated for different times after drilling in the program for modeling the process of mud invasion into a porous permeable formation with parameters characteristic of the BS cretaceous reservoir. For this continuous resistivity profile electric log signals are calculated for the reservoir of unlimited thickness.
AN APPROACH TO PROCESSING ELECTROTOMOGRAPHY DATA FOR ESTIMATING THE VOLUMES OF SUBSTANCES IN TAILINGS
Authors: Karin Yuri Grigorievich , Yurkevich Natalia Victorovna
Published: October 2021

Methodical recommendations for processing the data of electrotomography are given. Taking into account a priori information, in particular the results of the study of pits, can be carried out by carrying out a limited inversion of the ET data, while it is possible to limit either the resistance of some layers of the model or the position of the boundaries of some layers [1]. In the software used for processing electrical tomography data Res2dinv [2], it is possible to set the boundary of the assumed layer or to limit the resistance of the model section (to introduce local inhomogeneities with a given resistance). But it is difficult to fix the resistance of a particular layer with the available software tools. The proposed approach makes it possible to take into account the parameters of the model built from the pitting data using a preliminary one-dimensional inversion of the electrical tomography data in the Ip2win [1] program, followed by the export of the obtained assumed layer boundaries to the Res2dinv software for carrying out a limited two-dimensional inversion.
INDUCTIVE SOURCE INDUCED POLARIZATION OF FROZEN ROCKS AND ITS RELATIONSHIP WITH DIELECTRIC RELAXATION OF ICE
Authors: Kozhevnikov Nikolay O.
Published: October 2021

Fast decaying induced polarization in frozen rocks manifest itself as a not monotone induction transients. To account for induced polarization in the transient electromagnetic method, one usually uses the Pelton resistivity model. The relaxation time t, as found using the Pelton model, determines the decay rate of induced polarization voltage response to a current source. Conversion from t to the time constant t specifying the decay rate of the polarization current response to a voltage source, suggests that fast decaying induced polarization in frozen rocks is controlled by the dielectric relaxation of ice.
NEURAL NETWORK INVERSION OF RESISTIVITY DATA FOR DETERMINATION OF DISTANCE TO A BED BOUNDARY
Authors: Kushnir Dmitry Yu. , Velker Nikolay N. , Andornaya Darya V. , Antonov Yuriy E.
Published: October 2021

Accurate real-time estimation of a distance to the nearest bed boundary simplifies the steering of directional wells. For estimation of that distance, we propose an approach of pointwise inversion of resistivity data using neural networks based on two-layer resistivity formation model. The model parameters are determined from the tool responses using a cascade of neural networks. The first network calculates the resistivity of the layer containing the tool measure point. The subsequent networks take as input the tool responses and the model parameters determined with the previous networks. All networks are trained on the same synthetic database. The samples of that database consist of the pairs of model parameters and corresponding noisy tool responses. The results of the proposed approach are close to the results of the general inversion algorithm based on the method of the most-probable parameter combination. At the same time, the performance of the proposed inversion is several orders faster.
CUTTING WEIGHT, PERCENTAGE OF CARCASS AND FAT ABDOMINAL CHICKEN BROILER fed WITH ADDITIONAL RED SWEET POTATOES POWDER (IPOMOEA BATATAS)
Authors: Leesi Wa Ode Nurullah , Hafid Harapin , Pagala Muhammad Amrullah
Published: October 2021

This study aims to examine the use of red sweet potato flour on slaughter weight, percentage ofcarcass weight, and abdominal fat in broiler chickens fed with additional red sweet potato flour. Thisresearch was conducted in April to May 2018, housed in the Raman Farm enclosure in Puosu JayaVillage, Konda District, Konawe Selatan District. The material used in this study was 64 weeks oldbroiler chickens, with 64 feed ingredients used as the concentrate, corn, bean, sweet potato flour. Theequipment used is a scale, a colony cage made of wire-lined wood and measuring 4m x 2m, which isdivided into 16 plots and the size of each 1m x 0.5m, each story is equipped with a place to eat anddrink, 40-watt incandescent balloons and other equipment such as scales, ovens, sample grinders,basins, plastics, and gutters. This study was designed using a complete randomized design with fourtreatments and four replications, where four treatments consisted of P0 basic ration (Control), P1:basic ration containing 4% red sweet potato flour, P2: elemental percentage containing 6% red sweetpotato flour, and P3: basic ration contains 8% red sweet potato flour. The variables observed in thisstudy were cutting weight, carcass percentage, and abdominal fat of broiler chickens. The results ofthe analysis of variance showed that the administration of red sweet potato flour had no significanteffect (P> 0.05) on the percentage of carcasses and abdominal fat of broiler chickens. Broiler chickenaged five weeks. It was concluded that the provision of different red sweet potato flour in feed did notsignificantly affect slaughter weight, carcass weight, and abdominal fat percentage of broilerchickens. There is a tendency for broilers fed with red sweet potato flour to have heavier cut weights,a more significant portion of carcasses and an increase in the level of red yam, and a decrease inabdominal fat content and the addition of red yam levels in the feed.
Wong Solo Restaurant Service As A Provider Of Processed Chicken Meat To Customer Satisfaction
Authors: Sandiah Natsir , Reni Wa , Sani La Ode Arsad , Munadi La Ode Muh
Published: October 2021

The development of poultry farming business is increasing rapidly and contributes greatly in the fulfillment of protein needs. The business sector of processed chicken meat such as cafes, restaurants, and restaurants and sea food to meet the needs of consumers. The research aims to analyze the type of service in influencing the satisfaction of consumers of Wong Solo Kendari Branch by using survey methods and using accidental sampling techniques as many as 60 respondents. It is then analyzed using multiple linear regression tests. The results showed physical evidence, reliability, responsiveness, service assurance, and caring together have a very real effect on consumer satisfaction (p<0.01) in Wong Solo restaurants and factors that correlate positively to customer satisfaction are responsiveness, service assurance and care, while variables that correlate negatively to consumer satisfaction are physical evidence and reliability. Variable concern partially affects consumer satisfaction (P<0.01).
ANALISA PERKIRAAN UMUR TRANSFORMATOR DISTRIBUSI BERDASARKAN PEMBEBANAN DENGAN METODE TINGKAT TAHUNAN
Authors: Ridwan Khanif
Published: October 2021

Transformator distribusi merupakan salah satu sistem dalam tenaga listrik yang mempunyai peran penting karena berhubungan langsung dengan konsumen. Transformator distribusi dihubungkan dengan beban melalui jaringan sekunder, dan lokasi pemasangan tersebar di beberapa tempat. Dalam memperkirakan umur transformator dapat menggunakan metode tingkat tahunan. Metode tingkat tahunan menggunakan hukum deterioration yaitu terdiri dari persamaan Arrhenius (Ar), periode change out (n) dan menghasilkan jumlah periode changeout (EL), yaitu hasil perkiraan umur transformator. Dalam memperkiraan umur transformator diperoleh nilai per unit rating dasar transformator adalah 1 p.u, nilai n sebesar 2.84, Ar sebesar 0,369, dan hasil akhir perkiraan umur transformator atau jumlah periode change out adalah 4,928 tahun.Kata Kunci — Transformator, distribusi, perkiraan, umur, Arrhenius, periode, change out.
PERENCANAAN PENAMBAHAN BASE TRANCIEVER STATION (BTS) JARINGAN GSM PT. TELKOMSEL PADA WILAYAH KONAWE UTARA
Authors: Hamzah Afiat Rizki
Published: October 2021

Global System for mobile Communication (GSM) merupakan sistem telekomunikasi seluler digital yang diimplementasikan PT. Telkomsel di Kendari. Dalam sistem jaringan GSM, terdapat dua band frekuensi yaitu untuk arah uplink yang menggunakan frekuensi 890-915 MHz dan arah downlink yang menggunakan frekuensi 935-960 MHz. Dengan melihat peta topografi dari kecamatan Langgikima dan daerah sekitarnya, maka direncanakan BTS akan dipasang di daerah Langgikima, dengan mencari lokasi dengan dataran yang paling tinggi yaitu 55 meter di atas permukaan laut, tinggi dari BTS yang direncanakan yaitu 42 meter. Dengan melihat kondisi sosial geografis kecamatan Langgikima sebagai pusat pemerintahan dari Kabupaten Konawe Utara, maka BTS ini menggunakan antena sectorized dengan dua sektor. Alokasi frekuensi kerja untuk sektor 1 adalah : Uplink =900.80    MHz dan Downlink = 945.80 MHz, sektor 2 adalah : Uplink = 901.80 MHz dan Downlink = 946.80 MHz. Adapun cakupan wilayah BTS, diharapkan akan menjangkau kecamatan Langgikima dan sekitarnya. Radius untuk masing-masing sektor adalah 10,7 Km. Kata Kunci — BTS, downlink,Global System for mobile Communication (GSM), sectorized, uplink
Studi Potensi Pembangkit Listrik Tenaga Panas Bumi (PLTP) di Desa Kaindi Kecamatan Lainea Kabupaten Konawe Selatan Provinsi Sulawesi Tenggara
Authors: Ode Alisafa La
Published: October 2021

Negara Indonesia terus mengalami petumbuhan permintaan energi listrik. Pada tahun 2003-2020, setiap tahunnya permintaan kebutuhan energi listrik mengalami peningkatan sebesar 6,5 persen. Akibat dari permasalahan tersebut, pemerintah memberikan solusi dengan memaksimalkan pemanfaatan Energi Baru Terbarukan (EBT). Pengembangan EBT mengacu kepada Perpres No. 5 tahun 2006 tentang Kebijakan Energi Nasional. Dalam Perpres disebutkan kontribusi EBT dalam bauran energi primer nasional pada tahun 2025 adalah sebesar 17% dengan komposisi Bahan Bakar Nabati sebesar 5%, Panas Bumi 5%, Biomasa, Nuklir, Air, Surya, dan Angin 5%, serta batubara yang dicairkan sebesar 2%. Indonesia memiliki sumber panas bumi terbesar yaitu 40% dari potensi dunia, yang tersebar sepanjang jalur sabuk gunung api mulai dari Sumatera, Jawa, Bali, Nusa Tenggara, Sulawesi, dan Maluku. Di wilayah Provinsi Sulawesi Tenggara sendiri terdapat berbagai daerah yang cukup berpotensi dalam pengembangan sumber daya Pembangkit Listrik Tenaga Panas Bumi. Potensi tersebut dapat dijumpai dibeberapa kabupaten seperti Kabupaten Konawe, Kabupaten Konawe Selatan, Kabupaten Kolaka, Kabupaten Buton, Kabupaten Bombana, dan Kabupaten Muna. Di Kabupaten Konawe Selatan sendiri memiliki potensi panas bumi pada tingakatan terduga yang cukup tinggi, tepatnya di Kecamatan Lainea Desa Lainea dan Desa Kaindi sebesar 41.7 Mwe. Sehingga dari potensi panas bumi di Desa Kaindi adalah sumber air panas dengan suhu (80-150 o C), sangat cocok apabila digunakan jenis teknologi Binari Cycle Power Plants sebagai pembangkit energi listrik dengan sistem modular. Sistem modular yang dikembangkan oleh Rasertech hanya sekitar 280 kW per unit. Sehingga dari potensi panas bumi sebesar 41.7 MW dapat direncanakan total pembangkit 149 unit. Dimana 149 unit x 280 kW = 41.720 kW atau 41.7 MW. Kata Kunci : EBT, Panas Bumi, Binari Cycle Power Plants dan sistem Modular.
Pengembangan Bahan Ajar Multimedia, Animasi dan Virtual Reality Pada Pembelajaran Saintifik
Authors: Anshari Nur Muh Nadzirin
Published: October 2021

Tuntutan kurikulum yang mengisyaratkan kepada guru untuk membuat dan mengembangkan sendiri bahan ajar untuk penerapan pembelajaran saintifik, pada kurikulum terdapat proses mengamati, salah satu cara yang tepat dalam pengamatan adalah dengan menampilkan video, audio atau animasi yang dikemas dalam produk bahan ajar multimedia sehingga pelajaran akan dapat mudah dipahami oleh siswa. Tujuan dari penelitian ini adalah membuat berbagai jenis template bahan ajar berbasis multimedia dan animasi yang dapat digunakan oleh guru untuk mendesain sendiri bahan ajar yang digunakan, selain itu melatih guru untuk mendesain, membuat bahan ajar multimedia dan animasi serta pengemasan produk yang menarik sehingga baik dari segi fisik kemasan maupun konten dari bahan ajar tersebut. Metode yang digunakan adalah dengan metode observasi, pelatihan dan pendampingan, sehingga guru dapat melakukan pembuatan bahan ajar multimedia dan animasi secara mandiri, dan dalam penelitian ini diperoleh hasil berupa produk bahan ajar multimedia dan animasi dan masih perlu pengembngan lebih lanjut pada fitur virtual reality.Kata Kunci - Bahan Ajar, Multimedia, Animasi, Saintifik, Virtual Reality
Kinerja Jaringan ZigBee pada Topologi Star dan Tree dengan Interferensi Sinyal Wi-Fi Pada Sistem Presensi Mahasiswa
Authors: Kurnianto Danny , Wahyudi Eka , Amanaf Muntaqo Alfin
Published: October 2021

Sistem presensi mahasiswa memiliki arti yang penting bagi sebuah perguruan tinggi. Pemakaian jaringan wireline untuk sistem presensi mahasiswa memiliki kelemahan yang bisa diatasi dengan menggunakan jaringan wireless. ZigBee adalah salah satu standar komunikasi wireless yang dapat digunakan pada sistem presensi tersebut. Adanya jaringan Wi-Fi dapat menyebabkan gangguan kinerja pada jaringan ZigBee akibat interferensi sinyal. Pada penelitian ini akan dibahas unjuk kerja jaringan ZigBee dengan topologi star dan tree yang berjalan di dalam lingkungan yang memiliki jaringan Wi-Fi.  Parameter kinerja yang diamati adalah nilai daya sinyal RSSI, throughput, packet loss dan waktu delay. Besarnya data yang dikirimkan dari end device ke coordinator sebesar 15 Byte dan 20 Byte. Hasil penelitian menunjukkan bahwa pada topologi star memiliki unjuk kerja yang lebih baik untuk nilai daya sinyal RSSI, throughput dan waktu delay. Topologi tree memiliki unjuk kerja yang lebih baik hanya pada nilai packet loss. Rerata nilai daya sinyal sebesar -69,19 dBm, rerata nilai throughput sebesar 10,22 kbps untuk data 15 byte dan 14,28 kbps untuk data 20 byte, rerata nilai waktu delay sebesar 28,9 ms untuk data 15 byte dan 38,6 ms untuk data 20 byte. Nilai packet loss sebesar 27% untuk data 15 byte dan 43% untuk data 20 byte.
Sistem Jemuran Otomatis Menggunakan Mikrokontroler Berbasis Arduino
Authors: Indriyani Devie , Apriaskar Esa , Djuniadi Djuniadi
Published: October 2021

Dalam era digital seperti sekarang, peningkatan teknologi selalu terjadi. Muncul permasalahan dari yang sederhana hingga kompleks sehingga membutuhkan solusi berbasis teknologi. Belakangan ini cuaca tidak menentu, hujan sering turun tiba-tiba yang menyebabkan kerugian untuk beberapa pihak seperti laundry. Karena itu dibutuhkan teknologi untuk meminimalisir kerugian dan mengatasi permasalahan tersebut. Yaitu sebuah system otomatis dengan Arduino juga sensor LDR dan sensor hujan sebagai pendeteksi cuaca. Pemrosesan dilanjutkan dengan pengolahan hasil masukan untuk memutuskan apakah jemuran akan dimasukkan atau dijemur kebali. Dalam tulisan ini akan dijelaskan simulasi yang digunakan dalam system jemuran otomatis dengan aplikasi proteus.
Analisis Karakteristik Modul Panel Surya Dengan Sistem Pendingin Air
Authors: Janna Nurul Miftahhul , Widodo Djoko Adi
Published: October 2021

Pengoperasian panel surya dipengaruhi oleh radiasi matahari dan suhu modul. Ketika arus yang dihasilkan besar maka menimbulkan panas berlebih yang dapat merusak modul serta menurunkan tegangan yang dihasilkan. Upaya penurunan suhu modul dilakukan dengan sistem pendinginan. Namun pendinginan tidak disarankan dilakukan secara terus-menerus karena mempertimbangkan konsumsi daya pompa yang digunakan. Penelitian ini menggunakan Air pada permukaan PLTS berkapasitas 1 kWp jenis monocrystalline menggunakan water sprayer 360˚ dengan frekuensi pendinginan 2 menit sekali. Hasil pengujian nilai karakteristik panel surya mencapai 65,2V, 11,4A, suhu modul 30-38oC, meningkatkan daya keluaran hingga 35% dan efisiensi hingga 15%. Konsumsi daya pompa yang digunakan tidak lebih besar dari peningkatan daya yang dihasilkan.
Kajian Dampak Ketidaknormalan Meter Elektronik Pada Sistem Automatic Meter Reading Pada Pelanggan Tegangan Rendah
Authors: Samsurizal Samsurizal , Siagian Faber Agustinus G , Makkulau Andi
Published: October 2021

PT. PLN (Persero) as an lsitrik energy provider has the task of checking and measuring the use of electricity used by customers. In this case of course requires technology to be able to read how much electrical energy is used, one of the technologies used is Automatic Meter Reading (AMR).   The use of Automatic Meter Reading (AMR) system includes monitoring, recording the stand meter then the data can be displayed in the form of a report with data software used management. Electronic meters using AMR systems can be used as a detection tool against irregularities from troubled customers. The readings obtained from AMR are known to the customer's usage, moments before the maintenance error and after. So that it can accurately detect customers who occur maintenance errors and customers and PLN both know the amount of uncollectible kWh, so far the nursing has been impaired by maintenance errors from the beginning of the tide. Based on existing data AMR should not be worth kWh value, but with the error of maintenance in phase S kWh measurable import that will be calculated to obtain a follow-up bill. The result obtained is true there is an inverted phase, it is shown in the fasor diagram where the angle of phase S which was originally 168.30 to 14.40. So that in the stand meter becomes minus the impact due to the mistake of maintenance obtained follow-up bill is 41538.8 kWh equivalent to Rp. 60.949.050,- after calculation. It shows the impact that occurs due to the mismanagement of the follow-up bill that must be borne
Bumbung Gelombang Lingkaran Susun Untuk Aplikasi RF Energy Harvesting pada GSM 1800 MHz
Authors: Praja Muhammad Panji
Published: October 2021

Mobile device for mobile communication, especially GSM communication is one of the most important thing in our daily activities. A massive mobilty and connectivity to make sure everyone is connected to each other is necessary. In a same time, electrical power needs will increase in order to support the increasingly rapid exchange of information. In this research shown the result of circular waveguide array mode TM01 measurement for RF energy harvesting application at frequency GSM 1800 MHz – 1900 MHz. Design of circular waveguide array through parameter study developed an optimum result, return loss  at frequency centre 1850 MHz. Realization of this design is measured in unechoic chamber for minimizing a reflected wave from the ambient, so it called an ideal area for waveguide parameter measurement. The measurement results return loss at freuquency 1840 MHz
Alternatif Pemanfaatan Sampah Organik Sebagai Konservasi Sumber Energi Listrik
Authors: Sari Fitria Novita
Published: October 2021

The research article discussed the utilization of organic waste that always increases every year in line with the rate of population growth, therefore the article was prepared to review the utilization of organic waste as a form of conservation of electrical energy. The method in the research used is in the form of literature studies by collecting data from various sources or references relevant to the research conducted. The results of the literature study from several studies show that efforts to use organic waste derived from household waste, landfill waste, and organic waste in the market have the ability to be used for electrical energy sources and can be done energy conservation. The conclusion is that organic waste as an alternative to fossil fuels can be used as electrical energy, and that it can be used for energy conservation.
Sistem Keamanan Ruang Menggunakan Kamera Bergerak
Authors: Syam Supriadi , Muslim Muslim
Published: October 2021

Sistem keamanan merupakan hal penting yang dibutuhkan seseorang atau suatu instansi dalam mengamankan sesuatu yang penting. Selama ini penggunaan kamera CCTV menjadi pilihan utama, namun kamera tersebut hanya dapat mengambil gambar ke satu arah saja. Tujuan dari penelitian ini adalah untuk membuat sebuah prototipe sistem keamanan ruang yang berfokus pada pengamanan ruangan dari adanya objek yang bergerak. Kondisi ini akan memperjelas ciri-ciri objek yang bergerak dan  kamera tidak dapat dimanipulasi untuk menghadap ke arah lain. Tahapan penelitian yang akan dilakukan adalah menyiapkan ruangan yang akan menjadi ruang pengamanan, merekayasa program python untuk mengenali objek bergerak pada ruang tersebut, merekayasa program untuk membuat kamera mengikuti pergerakan objek tersebut dengan besar sudut 180o yang dikontrol dengan arduino. Hasil penelitian ini adalah sistem dapat mendeteksi gerakan dengan jarak maksimal 7 meter serta sistem dapat berkomunikasi dengan arduino yang menggerakkan kamera ke arah objek yang bergerak.
INTERNET OF THINGS UNTUK MONITORING GEJALA KECEMASAN PADA PASIEN MENGGUNAKAN LOGIKA FUZZY
Authors: Sakir Muh , Ihsan Indah Purwitasari , Yusuf Farida
Published: October 2021

A patient should not be in a psychologically worrisome condition for fear of lowering the temperature causing slow healing to last a long time. Prolonged anxiety will develop into stress, so it is very necessary to detect anxiety early before anxiety persists and results in stress. However, these anxiety symptoms are related to the same psychological factors and contain uncertainties that cannot always be controlled and monitored by doctors. The purpose of this research is to create a system that can monitor the patient's anxiety symptoms in real-time based on the Internet of Things (IoT) so that doctors can determine the right treatment to maintain the patient's psychological condition. The system detects responses in humans when someone feels anxious, namely heart rate, body temperature, and sweat intensity which are detected using sensors. The information obtained from the sensor becomes input parameters which are then processed using fuzzy logic to detect early symptoms. Fuzzy logic was chosen because it is a method for solving fuzzy problems with the uncertainty of the threshold value of symptom change. The output is in the form of anxiety symptoms which are divided into 3 (three) symptoms, namely normal, mild, and severe. The research method used is the SDLC (System Development Life-Cycle) method. the results based on the black box test state that the entire functional system works according to its function, the white box test results state that all logic is correct and appropriate. The results showed that the system that had been built succeeded in monitoring anxiety in patients with a system accuracy of 98%.
PUZZLE ELEKTRONIK MONTESSORI SAND BOARD LETTER(SBL) UNTUK EDUKASI SUKU KATA BAHASA INDONESIA PADA ANAK USIA DINI
Authors: Ihsan Indah Purwitasari , Sakir Muh , Yusuf Farida
Published: October 2021

Montessori is a learning method to stimulate children to reach their potential in all fields. In the field of reading literacy, one of the initial stages is how to stimulate initial reading skills, starting with introducing letters using the syllable learning method. The stimulation process must be in a fun and non-boring way of playing exploration so that children will not feel that they are learning, especially in the current state of the COVID-19 pandemic, where the learning process becomes boring for children because it has to be done at home. just. The purpose of this study is to create a learning technology in the form of an electronic Montessori Sand Board Letter (SBL) Puzzle for Indonesian syllables that can help stimulate early childhood according to the Montessori principle in recognizing syllables. The system development method uses the System Development Life-Cycle (SDLC) method. Based on the results of functional testing using the black box method, it is stated that the entire functional system is 100% functioning according to the system design. The results of testing and validation by Montessori practitioners state that the system has been made according to Montessori rules. Based on the results of usage observations, the Montessori Sand Board Letter (SBL) electronic puzzle for 85% Indonesian syllables can stimulate children's ability to recognize Indonesian syllables
Hepato- and nephro-toxicity of coumatetralyl rodenticide in some wild rat species
Authors:   Laboratory of Physiology, Department of Zoology, Faculty of Sciences, Assiut University, Egypt., Waly Hanan Salah Ahmed , Al-Salahy Mohamed Bassam ,   Laboratory of Physiology, Department of Zoology, Faculty of Sciences, Assiut University, Egypt., El-Arably Wafaa Mohammed Hassan ,   Plant Protection Research Institute, Agriculture Research Center, Egypt., Wilson Magdy ,   Plant Protection Research Institute, Agriculture Research Center, Egypt., Hassanein Khaled Mohamed Ahmed ,   Pathology and Clinical Pathology Department, Faculty of Veterinary Medicine, Assiut University, Egypt.
Published: October 2021

Coumatetralyl (COM) is an anticoagulant rodenticide absorbed quickly after oral dosing. It causes rodent’s death due to internal or external bleeding after complete depletion of plasma vitamin K-dependent coagulation factors. The present study aimed was to shed light on metabolic alterations as the potential hepato- and nephrotoxicity caused by ¼ LD50 COM in Rattus rattus, Arvicanthis niloticus, and Geribellus geribellus wild rat species. Elevation in plasma alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin, total free amino acids, and erythrocyte lysate glucose-6-phosphate dehydrogenase levels were observed in COM fed rats. Furthermore, plasma creatinine and urea and free hemoglobin levels increased following COM exposure in the challenged rats compared with that in the control ones. It was concluded that ¼ LD50 COM induced hepato- and nephron-toxicity in the fighting rodents.
Sodium-Ion Battery Anode Construction with SnP

x

Crystal Domain in Amorphous Phosphorus Matrix
Authors: Chen Baixu , Yang Yubo , Chen Aibing , Zhang Xu , Saddique Jaffer , Tang Mingxue , Yu Haijun
Published: October 2021

The high-capacity phosphorus- (P-) based anode materials for sodium-ion batteries (NIBs) often face poor performance retentions owing to the low conductivity and large volume expansion. It is thus essential to buffer these problems by appropriately alloying with other elements such as tin (Sn) and constructing well-designed microstructures. Herein, a series of P-/Sn-based composites have been synthesized by the facile and low-cost one-step ball milling. Pair distribution function (PDF) has been employed as a hardcore quantitative technique to elucidate their structures combined with other techniques, suggesting the formation and ratios of Sn
4
P
3
and Sn crystalline domains embedded inside an amorphous P/carbon matrix. The composite with the largest amount of Sn
4
P
3
in the P/C matrix can deliver the most balanced electrochemical performance, with a capacity of 422.3 mA-h g
−1
for 300 cycles at a current density of 1000 mA g
−1
. The reaction mechanism has been elucidated by
23
Na and
31
P solid-state nuclear magnetic resonance (NMR) investigations. The study sheds light on the rational design and concrete identification of P-/Sn-based amorphous-dominant composite materials for NIBs.
Avoiding the Production of Polluting and Toxic Chemicals in the Tanning Process
Authors: Morera Josep M. , Bartolí Esther , Rojas Patricia , Cabeza Luisa F.
Published: October 2021

Polluting and potentially toxic chemicals are used in tanning. Sodium sulfide/hydrosulfide are used when the hides are unhaired. These chemicals can be transformed into hydrogen sulfide with a simple change of pH. This gas is highly toxic and is the recurring cause of many deaths and accidents due to suffocation of workers in tanneries around the world. The basic salts of chromium III are the most used chemical to tan. The chromium III used can be transformed by oxidation, even once the leather transformed into a consumer good (shoes, for example), in chromium VI, which is carcinogenic. Both chemicals are present in process floats, in residual floats and in solid waste generated. Chromium III is also present in manufactured leathers. This article aims to describe the problems associated with the use of the aforementioned hazardous materials and deepen the possibility of using less toxic alternative processes to tan. The designed process allows to significantly reduce the pollutant load of the discharged wastewater, facilitates the reuse of the solid waste generated and clearly improve the safety of people at work.
Role of Anionic Chromium Species in Leather Tanning
Authors: Kumar Abhinandan , Alla Jaya Prakash , Arathanaikotti Deepika , J. Ashok Raj , K. Chandrababu N.
Published: October 2021

Chrome tanned leathers are definitely unique in comparison with leather made from any other known tanning agents, especially in terms of thermal stability, cost and its reactive mechanism with collagen fibers. In our current studies, self basifying chrome tanning materials masked with different percentages of organic acid were prepared and applied after the de-liming stage of leather processing. This eliminated the need for pickling and basification steps. Tanned leathers resisted shrinkage up to 103 and 105±2°C while conventional chrome tanned leathers resisted up to 108±2°C. Also, interaction of anionic chrome species in tanning was studied. It was observed that the percentage of anionic species in the experimental chrome tanning material was higher than conventional chrome tanning material and the shrinkage temperature achieved by application of experimental tanning material proves that anionic species do involve in tanning. Tanned leathers were crusted and analysed for strength and organoleptic properties.
Characteristics of polypoidal choroidal vasculopathy in the Malaysian population
Authors: Bastion Mae-Lynn Catherine , Nasaruddin Rona Asnida , Wong Hon Seng , Lim Amelia Lay Suan , Md Din Norshamsiah
Published: October 2021

Introduction: Polypoidal choroidal vasculopathy (PCV) is a distinct clinical entity, characterized by focal hyperfluorescence in the early phase of indocyanine green angiography (ICGA), with or without its associated branching vascular network (BVN).Purpose: To report the angiographic characteristics of PCV on ICGA in presumed PCV patients.Study design: Descriptive cross-sectional study.Materials and methods: This study involved 36 suspected PCV patients who attended the Ophthalmology Clinic, Universiti Kebangsaan Malaysia Medical Centre from June 1, 2012 to May 31, 2013. All patients underwent complete ophthalmologic examination including colour fundus photography, ICGA, and fundus fluorescein angiography. ICGA images of confirmed PCV patients were analysed.Results: Twenty-five out of 36 eyes (69.4%) were diagnosed to have PCV based on ICGA. Mean age of confirmed PCV patients was 66.4 ± 8.42 years, with predominance of males (n = 17) and Chinese ethnicity (n = 19). Best-corrected visual acuity (BCVA) was between 6/6 and 6/18 in 64%. All 25 patients had unilateral disease. Average size of PCV lesions was 1461.4 ± 864.4 μm. The lesions were mostly concentrated in the extrafoveal region (n = 15, 60%). Lesion formation was cluster in 56% (n = 14), single in 32% (n = 8), string in 4% (n = 1), and combination in 8% (n = 2). The majority involved a single discrete area. Polyp pulsation was detected in six eyes, while seven eyes revealed nodular hyperfluorescence when viewed stereoscopically. BVN was evident in 56% (n = 14). Fifteen eyes demonstrated the hypofluorescent halo, while no hyperfluorescent ring was seen in this study population. Late geographical hyperfluorescence (LGH) was noted in seven eyes (28%). There was no significant association between the morphological characteristics of PCV, i.e., size of lesion, location, formation, discrete area involved, and LGH with BCVA.Conclusion: The demographic, clinical, and angiographic features observed in this study were in agreement with other previously published Asian studies. However, we found no association between the morphological characteristics of PCV with BCVA.
Combination of half-dose photodynamic therapy and anti-VEGF versus anti-VEGF monotherapy for polypoidal choroidal vasculopathy
Authors: Chow Jun Yong , She Poh Fong , Bastion Mae-Lynn Catherine , Wan Muda Wan Norliza Binti
Published: October 2021

Introduction: Polypoidal choroidal vasculopathy (PCV) is an abnormality of the inner choroidal vasculature. The recommended treatment for PCV is a combination of standard verteporfin photodynamic therapy (PDT) with intravitreal injections of anti-vascular endothelial growth factor (anti-VEGF). There have been reports ofsuccess with combination of half-dose PDT (hd-PDT) and anti-VEGF in the treatment of PCV. hd-PDT might be a cost-effective method with favourable outcome in the treatment of PCV and fewer side effects.Purpose: To explore the efficacy of hd-PDT combined with anti-VEGF and anti-VEGF monotherapy in PCV.Study design: Retrospective nonrandomized comparative study.Material and methods: We conducted a retrospective nonrandomized comparative records review of all patients with PCV received a combination of hd-PDT and anti-VEGF vs anti-VEGF monotherapy from November 2017 to November 2019 at Hospital Tengku Ampuan Afzan, Pahang, Malaysia. Patients received a half-dose of verteporfin over 10 minutes and were irradiated by the standard fluence combined with intravitreal ranibizumab or aflibercept injections. The monotherapy group received either intravitreal ranibizumab or aflibercept. Primary outcome measures were best-corrected visual acuity (BCVA) and central subfield thickness (CST) at 6 months post-treatment. Secondary outcome measure was documentation of sideeffects.Results: The study included a total of 16 patients, with 8 patients (8 eyes) in the combination group and 8 patients (10 eyes) in the monotherapy group. At 6 months post-treatment, the BCVA changes in logarithm of the minimum angle of resolution (logMAR) were -0.06 in the combination group and +0.02 in the monotherapy group (p = 0.928). The average CST reduction was 51.6 μm in the combination group and 106.1 μm in the monotherapy group (p = 0.214). One eye developed subretinal haemorrhage after hd-PDT and one eye developed retinal atrophy in the monotherapy group.Conclusion: hd-PDT combined with anti-VEGF was able to produce similar functional outcomes in terms of BCVA when compared to anti-VEGF monotherapy. However, monotherapy is shown to be superior to combination treatment for anatomical improvement.
Occlusive retinal vasculitis in an immunocompetent woman: rare presentation of ocular melioidosis
Authors: Huwaina Abdul Satar , Muhammad-Ikmal Mohamad Kamil , Rosiah Muda , Liza-Sharmini Ahmad Tajudin
Published: October 2021

Burkholderia pseudomallei is a known great mimicker responsible for melioidosis. Ocular involvement in melioidosis is unusual, with eyelid and orbital infection as the commonest presentation. We describe a 41-year-old, healthy woman who complained of reduced vision in her left eye. On examination, vision in the left eye was 6/9. There was evidence of occlusive retinal vasculitis on fundoscopy examination. Fundus fluorescein angiogram showed extensive capillary fallout. Diagnosis was established by a rise in the serum antibody titre for the bacterium and further supported by clinical improvement of vision after completion of treatment antibiotics. Sectoral panretinal photocoagulation at the capillary fallout area successfully arrested the sequelae of retinal ischaemia. Occlusive retinal vasculitis is a rare presentation of melioidosis. Early prompt diagnosis in an immunocompetent individual helps prevent visual-related morbidity. The ability of this bacteria to cause recurrent infection in an endemic area should not be underestimated.