bluuebunny/crossref_metadata_2025 huggingface dataset:
Recent and Relevant Methodology in the Advancement of Solid Dispersion
Authors: Talla Shruti , Wadher Kamlesh , Umekar Milind , Lohiya R.T.
Published: August 2021

Most of the promising drugs in development channels are poorly water-soluble drugs which limit formulation approaches, clinical application because of their low dissolution and bioavailability. And the major current challenges of the pharmaceutical industry are apropos strategies that improve the water solubility of drugs.  Solid dispersion has been considered one of the major evolutions in overcoming these issues with several successfully marketed products. Though solid dispersion has been outlined as an efficient drug delivery system, the design of specific dosage forms for pharmaceutical therapy is necessary to improve the solubility and bioavailability of poorly water-soluble drugs. Solid dispersion can be prepared by several methods such as solvent evaporation, melting, and supercritical fluid technology.  This review intends to provide an updated overview of the recent trends over the past few years in solid dispersion preparation techniques and polymer used. Along with the various pharmaceutical strategies and future visions for the solubilization of poorly water-soluble drugs

Keywords: Solid dispersion, Bioavailability, Solubility, Dissolution parameters, Polymeric carrier
Development and validation of UV-Spectrophotometric and RP-HPLC method for simultaneous estimation of Metformin and Doxycycline in bulk and synthetic mixture
Authors: Mashru Rajashree , Koshti Nirupa
Published: August 2021

A simple, rapid, sensitive, accurate and precise UV spectrophotometric and isocratic RP-HPLC method have been developed for simultaneous estimation of Metformin and Doxycycline in bulk and synthetic mixture. Spectrophotometric estimation was done by two methods. First method was Q-absorbance ratio method, where two wavelengths 236 nm (λmax of Metformin) and 248 nm (Iso-absorptive point) were used. The second method was first derivative method. In this method the zero-crossing point of Metformin was selected at 282 nm and for Doxycycline, it was 232 nm. The solvent used was methanol in both the above UV-spectrophotometric methods. Metformin and Doxycycline showed good linearity in the series of 1-9 µg/ml and 2-20 µg/ml respectively by both the two methods with an excellent correlation coefficient (r2≥0.998). In RP-HPLC method, the chromatographic separation was achieved on Luna Phenomenex C18 (150 mmХ6 mm, 5 µm) analytical column. A mixture of Acetonitrile: Phosphate buffer (50 mM): Triethylamine (TEA): Tetrahydrofuran (THF) (30:66:2:2) pH adjusted to 2.1 with orthophosphoric acid was used as the mobile phase, at a flow rate of 1 ml/min and at detector wavelength 248 nm. The retention time of Metformin and Doxycycline was found to be 3.561±0.0017 and 5.574±0.0131 minutes respectively. A linear response was observed over the concentration range 4-64 µg/ml of Metformin and 5-80 µg/ml of Doxycycline. All the three methods were validated in accordance to ICH guidelines for linearity, accuracy, precision, LOD and LOQ. The proposed methods were effectively utilized for the concurrent estimation of Metformin and Doxycycline in synthetic mixture.

Keywords: Metformin, Doxycycline, Q-absorbance ratio method, First derivative method, RP-HPLC
In-Silico Evaluation of Tiryaq-E-Wabai, an Unani Formulation for its Potency against SARS-CoV-2 Spike Glycoprotein and Main Protease
Authors: AHMED N ZAHEER , DAVIS DICKY JOHN , ANWAR NOMAN , KHAN ASIM ALI , MEENA RAM PRATAP , AFNAAN ZEBA , DEVI MEERA
Published: August 2021

COVID-19 was originated in Wuhan, China, in December 2019 and has been declared a pandemic disease by WHO. The number of infected cases continues unabated and so far, no specific drug approved for targeted therapy. Hence, there is a need for drug discovery from traditional medicine. Tiryaq-e-Wabai is a well-documented formulation in Unani medicine for its wide use as prophylaxis during epidemics of cholera, plague and other earlier epidemic diseases. The objective of the current study is to generate in-silico evidence and evaluate the potency of Tiryaq-e-Wabai against SARS-CoV-2 spike (S) glycoprotein and main protease (3CLpro). The structures of all phytocompounds used in this study were retrieved from PubChem database and some were built using Marvin Sketch. The protein structure of the SARS-CoV-2 S glycoprotein and 3CLpro was retrieved from the PDB ID: 6LZG and 7BQY respectively. AutoDock Vina was used to predict top ranking poses with best scores. The results of the molecular docking showed that phytocompounds of Tiryaq-e-Wabai exhibited good docking power with spike glycoprotein and 3CLpro. Among tested compounds Crocin from Zafran and Aloin A from Sibr showed strong binding to spike glycoprotein and 3CLpro respectively. Molecular dynamics simulation confirmed the stability of the S glycoprotein-Crocin and 3CLpro-Aloin A complexes. The Unani formulation Tiryaq-e-Wabai has great potential to inhibit the SARS-CoV-2, which have to be substantiated with further in-vitro and in-vivo studies.

Keywords: In-silico study, SARS-CoV-2, Tiryaq-e-Wabai, Unani formulation, Crocin, Aloin A
The Knowledge Relationship between Mothers who have Children Aged 2-5 years about Anemia toward Stunting Incidence
Authors: Simarmata Vidi Posdo , Suryanegara Wiradi
Published: August 2021

Anaemia is a condition in which there is a decrease in red blood cells or haemoglobin levels in red blood cells caused by several factors such as chronic diseases, iron and folic acid deficiency, or chronic bleeding. Anaemia is one of the world’s nutritional problems, especially in developing countries, including Indonesia. According to RISKESDAS 2013, the number of stunting children in Indonesia had reached 37% (estimated 9 million toddlers) One of the factors that can cause stunting is anaemia during pregnancy. This research aims to determine whether there is a correlation between anaemia-related knowledge of mothers who have children aged 2-5 years old with the incidence of stunting. The research used in the study used analytical research with a cross-sectional method. The data was collected using questionnaires distributed to mothers who have children at the age of 2-5 years in Mekarbakti Village, Sumedang District, West Java. The study results showed that the incidence of stunting is higher in the group of respondents who have better knowledge of anaemia. The conclusion is that there is no correlation between the level of anaemia-related knowledge of mothers who have children aged 2-5 years with the incidence of stunting in Mekarbakti Village (P Value> 0.05).

Keywords: Anemia, Stunting, Toddler
The concept of “strong state” in the political and legal dimension
Authors: Malinovsky Aleksey A.
Published: August 2021

The concept of strong state in the general theory of state and law has not been studied in sufficient detail. In political science, the science of administrative law and in international legal doctrines, this concept is considered mainly from geopolitical, military-strategic and political-administrative positions. In the presented article, a theoretical and legal analysis of the concept of a strong state is carried out. Methodologically, the author adheres to the approaches of political realism and realistic theory of law, which are aimed not at building a model of an ideal strong state, but at studying really functioning strong states with all their problems and contradictions. It is proposed to understand a strong state as a state that effectively uses any legal means to carry out the functions assigned to it in its own political interests. The article in the format of a scientific discussion analyzes the signs and criteria of a strong state, characteristics of the law of the strong. The research subjects also include the problem of a strong state legitimacy, the category of the great power and the process of legal expansion.
Analisis Kontrol Optimal Pada Model Matematika Penyebaran Pengguna Narkoba Dengan Faktor Edukasi
Authors: Resmawan  , Eka M , Nurwan  , Achmad N
Published: August 2021

ABSTRACT

This paper discusses the mathematical model of drug users with education. Optimal control theory was used on this model with education as a control to achieve the goal of minimizing the number of drug users. The optimal control problem was analyzed using Pontryagin’s minimum principle and performed numerical simulation by using a 4th-order Runge-Kutta method. Based on the numerical simulation, there was a change in the number in each population which caused the population with education to increase, and control with education resulted in the reduced number of drug users.

Keywords: Optimal control; mathematical model; drug users; education

 

ABSTRAK

Artikel ini membahas tentang model matematika penyebaran pengguna narkoba dengan faktor edukasi. Teori kontrol optimal diterapkan pada model ini dengan pemberian kontrol berupa edukasi dengan tujuan untuk meminimumkan jumlah pengguna narkoba. Kontrol optimal dianalisis menggunakan Prinsip Minimum Pontryagin dan dilakukan simulasi numerik dengan menggunakan metode Runge-Kutta orde 4. Berdasarkan simulasi diperoleh bahwa terjadi perubahan jumlah di tiap populasi dan mengakibatkan jumlah populasi dengan edukasi bertambah, serta pemberian kontrol dengan edukasi mengakibatkan jumlah pengguna narkoba berkurang.

Kata kunci       : Kontrol optimal; model matematika; pengguna narkoba; edukasi
Analisis Kemampuan Penggunaan Teknologi Informasi Mahasiswa dalam Pembelajaran Matematika di Era Pandemi Covid-19
Authors: Sihotang S F , Ramadhani R
Published: August 2021

The Covid-19 pandemic had a major impact on various sectors, including the education sector. All schools and colleges in almost all countries affected by Covid-19 have implemented online learning. After being run for one-year, online learning conditions cannot be considered ideal because there are still various obstacles faced, especially in terms of the students' ability to use information technology. Facts that I found on my campus, there are still many students who find it difficult in terms of applications used and in terms of methods or processes of online learning. Thus, this study aims to analyze the influence of students' ability to use information technology variables on the difficulties experienced by students during online learning with E-learning media assistance in terms of applications used and in terms of learning methods or processes online during mathematics learning in the Covid-19 pandemic outbreak. The research method used in this study is structural equation modelling (SEM) analysis, to test the hypothesis. After conducting the research, the results obtained stated that the most positive and significant impact on students' ability to use information technology, namely the applications used during online learning variable compared to the online learning method or process variables themselves during mathematics learning in the Covid-19 pandemic outbreak.
Changing socio-spatialities in Kadiköy, Istanbul: A case study
Authors: Ulubaş Hamurcu , Terzi Fatih
Published: August 2021

This study aims to reveal the relationship between the social structure and
urban pattern in a specified urban area by means of the socio-spatial
dialectic. To understand the circumstances behind this dichotomy, analyses
were conducted on two intertwined subjects - social structure and morphology
- as part of a case study of the historical core of the Kad?k?y district in
Istanbul, Turkey. Based on the findings, some inferences, depending on the
predefined social and morphological components, are made about changing
socio-spatialities in the given place by means of time-spacesociety
relations. The results show that each socio-cultural group brought their own
culture and adapted their physical environment according to their basic
needs, and that culture has a restrictive and explanatory effect on the
formation of space. In addition, population growth and the adaptive capacity
of society to external forces demanding change in the urban space also turn
out to unavoidably affect the development scheme of the morphological
character of the area.
A language-driven reverse-engineering tool for the analysis of architectural precedents: A Palladian case study
Authors: Eilouti Buthayna
Published: August 2021

The analysis of precedents represents a significant point of departure for
design processing. By applying a language/ design analogy, this research
introduces a reverse-engineering tool that helps guide the systematic
analysis of architectural precedents. The visual tool consists of four main
layers: the morphological, the semantic, the semiotic, and the pragmatic. To
test the tool?s applicability, a prominent precedent from the Palladian
designs is analyzed as a case study. By developing the tool and
demonstrating its applicability for the analysis of the underlying
regulatory and formative principles of the Palladian design, this paper aims
to contribute to the knowledge of architectural design by introducing an
analytical tool for decoding and externalizing the design language. This
tool can be added to the existing toolbox of designers, and it can help
reveal new insights into the multi-layered compositional language of
precedents and their underlying architectonics. The findings related to the
tool?s applicability and the compositional language of the Palladian design
and its associative meanings and connotations are explained, discussed and
illustrated by diagrams.
Voluntary Disclosure Responses to Mandated Disclosure: Evidence from Australian Corporate Tax Transparency
Authors: Kays Allison
Published: August 2021

In order to deter aggressive tax planning, the Australian government mandated public disclosure of three line items from large corporations' tax returns. However, there is no evidence that the mandated disclosure led public firms to pay more taxes (Hoopes, Robinson, and Slemrod 2018). Instead, I find that firms strategically offset expected reputational costs by voluntarily issuing supplemental information. Specifically, when managers expect new reputational costs from the mandated tax return disclosure (wherein the disclosure reveals an unexpectedly low tax liability) and low proprietary costs from a supplemental voluntary disclosure (wherein the firm discloses its nonaggressive tax planning), firms are likely to voluntarily disclose information that both preempts and supplements the government's mandatory disclosure. Thus, when mandatory disclosures are incomplete, firms will voluntarily issue additional information to remain in control of their disclosure environments.
Short-Selling and Information Arrival around Earnings Announcements: Evidence from Regulation SHO
Authors: Clinch Greg , Li Wei
Published: August 2021

Short sellers assist in impounding negative news more quickly into stock prices and improve price informativeness. However, there is a lack of consistent evidence about whether short sellers trade predominantly in anticipation of, or in response to, a public information release. To shed light on this question, we exploit Reg SHO, which reduced the constraints faced by short sellers for a subsample of U.S. firms, to examine price informativeness before, during, and after earnings announcements. We show that relative to control firms, pilot firms have greater (less) price informativeness before (during) earnings announcements, suggesting that short sellers trade in anticipation of public earnings news, rather than in response to the public news.

Data Availability: Data are available from the public sources cited in the text.

JEL Classifications: M40; M41; M48.
Randomized, Controlled Clinical Study on the Use of Noninvasive (Near-Infrared Light) Technology Compared with the Conventional Technique for Peripheral Venous Access Puncture in Pediatrics
Authors: Bomfim Graziela F. T. , Machado Avelar Ariane Ferreira , da Rocha Cunha Mariana Lucas
Published: August 2021

Highlights

Background: Obtaining peripheral venous access, especially in children, is usually a challenging procedure for nursing professionals. In pediatric patients this is because of the small caliber of the vessels, deep localization in the tissue, and multiple previous attempts of venipuncture. This experiment compared the success in obtaining venous access in pediatric patients with the use of near-infrared light and with the conventional technique.

Method: True experiment, developed in a large private general hospital and a public general hospital under the same management. The study included children aged 0 to 6 y (including newborns and pediatric patients up to 5 y, 11 mo and 29 d) under clinical or surgical treatment, undergoing peripheral venous puncture both for laboratory test collection and for infusion of medications and solutions. A total of 144 punctures were analyzed, 51.4% with the conventional technique and 48.6% using the device with near-infrared light.

Results: The success for the conventional technique was 89.2%, and 97.1% on the technique with near-infrared light, P = 0.098, with no evidence of significant differences.

Conclusion: The success rate for obtaining peripheral venous access in children was similar in the study groups. This study expands the knowledge about the success in the peripheral venous puncture by considering that this is not exclusively related to the use of supportive technologies.
Dentin Permeability and Nanoleakage of Universal Adhesives in Etch-and-rinse vs Self-etch Modes
Authors: Cruz JMMS , Silva ALGBM , Eira RMRF , Sousa BMPR , Lopes MMN , Cavalheiro AJCCS
Published: August 2021

Purpose:

This study evaluates the reduction in dentin permeability (P) and the expression of nanoleakage in resin-dentin interfaces made with universal adhesives, comparing the self-etch mode of application with the etch-and-rinse mode of application.

Methods and Materials:

To measure dentin P at the baseline and after adhesive polymerization, 80 extracted noncarious human third molars (N=80) were sectioned to obtain 0.7-mm-thick midcoronal dentin disks. The specimens were randomly assigned to 8 groups according to the different adhesive systems and application modes used: Scotchbond Universal (SBU; etch-and-rinse [ER] mode vs self-etch [SE] mode), OptiBond XTR (OPT; etch-and-rinse mode vs self-etch mode), Clearfil Universal Bond Quick (CL; etch-and-rinse mode vs self-etch mode), and Adhese Universal (ADH; etch-and-rinse mode vs self-etch mode). A two-way analysis of variance with interaction was used to evaluate the P reduction differences among the groups (α=0.05). Sixteen additional 0.7-mm-thick dentin disks were similarly prepared and treated, immersed in 50 wt% ammoniacal silver nitrate, and then processed according to conventional methods for analysis under transmission electron microscopy.

Results:

The differences in P reduction among the adhesives were significant (p=0.029). For OPT and ADH (p=0.0304 and p=0.0120, respectively), the P reduction was higher in the ER mode than in the SE mode. For CL and SBU, no differences in P reduction was observed between the two application modes (p>0.05). All the groups showed some pattern of nanoleakage.

Conclusions:

No adhesive system completely reduced dentin P. Dentin sealing was higher for OPT and ADH in the ER mode, while for SBU and CL, there was no difference between the two modes. All the adhesive systems showed nanoleakage.
Effect of Daily Usage Time of 4% Hydrogen Peroxide on the Efficacy and Bleaching-induced Tooth Sensitivity: A Single-blind Randomized Clinical Trial
Authors: Terra RMO , da Silva KL , Vochikovski L , Sutil E , Rezende M , Loguercio AD , Reis A
Published: August 2021

Objective

Compare the risk/intensity of tooth sensitivity (TS) and color change of a 30-minute vs. the recommended 120-minute application time of 4% hydrogen peroxide (HP) for at-home bleaching.

Methods

A single-blind, parallel, randomized clinical trial was conducted with 92 adult patients with caries and restoration-free anterior teeth A2 or darker, randomly allocated to two groups. Bleaching trays containing 4% HP were used for three-weeks. A four-week regimen was also offered to the patients for the 30-min group after the end of the 3-week protocol. The color change was assessed with the Vita Classical (VITA Zahnfabrik, Bad Säckingen, Germany) and Vita Bleachedguide shade guides (VITA Zahnfabrik) and the Vita Easyshade spectrophotometer (VITA Zahnfabrik) at baseline, weekly, and 30 days after the bleaching. The absolute risk and the intensity of TS were assessed daily using the 0–10 visual analogue scale (VAS) and 5-point Numerical Rating Scale (NRS) scale, and patient satisfaction was recorded with a Likert 0–7 scale. Risk of TS (Fisher’s test), intensity of TS in NRS scale (Mann-Whitney test), VAS scale (t-test), and a color change (t-test) were compared.

Results

The 30-minute group saw color change of around 1 SGU inferior to the 120-minute group in all-time assessments (p<0.05). After an extra week of bleaching, mean color change was similar (p>0.05). Patient satisfaction was high for both groups (p>0.05).

Conclusions

A four-week protocol of at-home dental bleaching with 4% HP for 30 minutes/day whitened teeth similarly to the 120 minutes/day protocol, with low intensity of dental sensitivity and high patient satisfaction.
Non-thrombotic ischemic cerebrovascular events related to the use of tyrosine kinase inhibitors in patients with cancer: high-resolution magnetic resonance imaging findings
Authors: Sim Jae Eun , Park Jeongho , Bang Oh Young
Published: August 2021

The targeted cancer therapies that have been introduced in recent years are directed against cancer-specific molecules and signaling pathways, and thus, they have limited nonspecific toxicities. However, major vascular events, including stroke, are common in patients receiving tyrosine kinase inhibitors (TKIs). Inhibition of vascular endothelial growth factor receptor by some TKIs probably explains such events. Moreover, venous and arterial thromboses, atherosclerosis, and bleeding have been reported. Ischemic lesions can also occur due to impaired angiogenesis or endothelial dysfunction. However, the exact mechanisms of arterial stroke in patients with cancer receiving TKIs are unknown. Here, we have report two cases of non-thrombotic ischemic cerebrovascular events related to TKIs and described the high-resolution magnetic resonance imaging findings.
STUDY OF THE PROCEDURAL FORM OF SIMPLIFIED PROCEEDINGS IN THE CONTEXT OF THE PROBLEM OF IMPLEMENTATION OF THE PRINCIPLE OF PROCEDURAL ECONOMY
Authors: DOLOTIN R.R.
Published: August 2021

The search for an optimal balance between the result of legal proceedings and the way to achieve it is currently one of the most important areas of development of procedural legislation. In this regard, there is a need to use not only the general procedure for the consideration and resolution of cases, but also a special one, which contributes to the rational simplification and acceleration of procedures. In this sense, the study of the procedural form used in the claim and simplified proceedings is of particular value. The author comes to the conclusion that in simplified proceedings, a truncated procedural form is used, which is characterized by such manifestations of procedural economy as the absence of a preliminary meeting, summoning the parties to a court session, the prohibition of the court’s examination of evidence provided in violation of deadlines, making a decision without a reasoned part, etc. It is noted that the effectiveness of arbitration proceedings should not be achieved by violating the fundamental principles of civil proceedings. In conclusion, the author concludes that the procedural form should be defined as a system of scientifically grounded, normatively defined conditions of effective and correct resolution of civil cases, determined by legal relations to be protected.
OPTIMIZATION OF CIVIL PROCEDURAL LEGISLATION TOWARDS THE BALANCE OF SPECIALIZATION AND UNIFICATION OF PROCEDURAL LAW
Authors: POTAPENKO E.G.
Published: August 2021

The article presents the author’s concept of the results of the processes of specialization and unification in civil procedural law at the elementary level. It also states that a primary community, which includes paired procedural rules (general and special), is formed at the lowest level of the branch system of procedural law. Paired norms are combined into procedural complexes designed to fully regulate a separate part (stage) of procedural relations considering atypical procedural legal situations. In terms of the content and the structure of civil procedural law it is important to ensure a balance of processes of specialization and unification, which minimizes their negative consequences. As a structural element of civil procedural law procedural complexes should be adequately reflected in the legislation through the correct formation of regulatory material. The article gives a detailed analysis of the current civil procedural legislation (not including institutions of appeal and review), identifies defects in the formation of regulatory material and proposals for their elimination, shows contradictions (conflicts) of special norms, gaps (vacuums) in legal regulation and the lack of necessary regulatory generalizations.
Alat Pendeteksi Logam Pada Makanan Berbasis Arduino Uno
Authors: Muhtarom Farhan , Effendi Hansi
Published: August 2021

Makanan adalah sesuatu yang dapat dimakan oleh makhluk hidup dan setelah dicerna serta diserap tubuh akan berguna bagi kesehatan dan kelangsungan hidup. Penemuan beberapa logam pada kemasan makanan ringan membuat makanan tersebut jika di konsumsi dapat membayahakan tubuh manusia. Maka dari itu, industri-industri makanan perlu memperhatikan kebersihan makanan tersebut baik itu terutama untuk industri dalam usaha menengah dan kecil yang jarang menggunakan alat pendeteksi logam ini. Pada perancangan sebelumnya, alat ini akan bekeeja secara otomatis mendeteksi makanan-makanan yang terdeteksi logam dan yang tidak terdeteksi logam. Arduino uno digunakan sebagai pusat kontoller dari alat ini, sensor logam difungsikan sebagai sensor yang akan mendeteksi logam, sensor infrared di fungsikan sebagai mendeteksi halangan dan menhitung jumlah makanan-makanan yang terdetesi logam dan yang tidak terdeteksi logam dan jumlah akan di tampil pada LCD. Dari pengujian yang telah dilakukan, alat ini bekerja mendeteksi logam di setiap makanan dan memisahkan makanan yang  terdeteksi logam dengan yang tidak terdeteksi logam ke tempat yang telah ditentukan.
Sistem Sterilisator Otomatis Berbasis Arduino Uno
Authors: Aditya Muhammad , Myori Dwiprima Elvanny
Published: August 2021

Sterilisasi adalah suatu proses membunuh segala bentuk kehidupan mikroorganisme yang ada pada sample, alat-alat atau lingkungan tertentu Secara teknis.”Permasalahan yang sering dihadapi oleh tenaga medis untuk mensterilkan alat adalah segi keefektifan waktu. Dalam perancangan“tugas akhir ini bertujuan untuk menciptakan sebuah alat”Sistem Sterilisator Otomatis berbasis Arduino Uno yang menjadi alat untuk mensterilkan peralatan medis yang sifatnya bisa dipakai ulang dengan waktu dan suhu yang lebih akurat. Alat Sistem Sterilisator Otomatis berbasis Arduino Uno ini dapat diatus berapa waktu dan suhu yang diiinginkan sehingga lebih efisien untuk digunakan bagi para tenaga medis. Dengan menggunakan Thermocouple sebagai sensor suhu dan besaran suhu yang terukur akan ditampilkan pada Liquid Crystal Display (LCD). Untuk sistem kontrol menggunakan Arduino Uno untuk pemprosesan data. Cara kerja alat ini adalah dengan mengatur berapa waktu dan suhu yang diinginkan kemudian teakan tombol start, selanjutnya heater akan bekerja secara otomatis sampai suhu yang diinginkan tercapai dan setelah waktu dan suhu telah tercapai maka buzzer akan aktif menandakan proses sterilisasi telah selesai. Dari hasil penelitian menyimpulkan, proses sterilisasi membutuhkan waktu 10 menit untuk mencapai suhu 1200C, dari hasil analisa alat ini tergolong lebih baik dibandingkan dengan alat yang sebelumnya yang membutuhkan waktu 30 – 60 menit untuk mencapai suhu 1000C.
Perancangan Sistem Keamanan Ruangan Akibat Kebocoran Gas Berbasis Internet of Things (IoT)
Authors: Maidoni Indra , Elfizon Elfizon
Published: August 2021

Peranan gas LPG pada saat ini sangatlah penting bagi kehidupan manusia baik di rumah tangga maupun di industri. Namun, gas  dapat berdampak negatif, terutama bila tidak diketahui telah terjadi kebocoran dari tabung atau tempat penyimpanan gas LPG (liquefied Petroleum Gas) tersebut. Untuk itu tugas akhir ini bertujuan untuk membuat perancangan sistem keamaanan ruangan akibat kebocoran gas berbasis internet of things (IoT), dimana menggunakan sensor MQ-6 dan sensor MQ-2 untuk mendeksi gas ataupun asap kemudian secara otomatis sistem akan mensterilkan ruangan dari gas yang masuk keruangan tersebut,  sistem juga dilengkapi dengan hidran apabila terjadi kebakaran  dan notifikasi yang terhubung dengan jaringan menggunakan modul ESP8266 yang akan mengirim kan data atau notifikasi ke aplikasi whattsap apabila terjadi kebocoran gas ke pemilik ruangan yang tidak ada ditempat sehingga pemilik ruangan tau telah terjadi kebocoran gas.
Power Supply Variabel Berbasis Arduino
Authors: Putra Genta Subni Ananda , Nabila Ariza , Pulungan Ali Basrah
Published: August 2021

Power supply merupakan alat yang digunakan sebagai penyedia daya untuk satu atau lebih beban lisrik. Untuk itu dibutuhkan power supply yang keluaran tegangannya dapat diatur sesuai dengan beban yang di gunakan. Tujuan dari pembuatan  proyek akhir ini yaitu dapat merancang dan membuat power supply yang keluaran tegangannya dapat diatur dengan mudah sesuai yang di inginkan. Alat ini dapat mengubah tegangan AC 220 V  menjadi tegangan DC 5V untuk sumber tegangan pada arduino dengan menggunakan rangkaian penyearah, pada saat tegangan di inputkan melalui keypad maka arduino akan memproses dan memberikan perintah instuksi kepada modul DAC  melalui  I2C pada LCD untuk mengeluarkan tegangan sesuai dengan input dari keypad.
Prototipe Robot Pembersih Lantai Berbasis Mikrokontroller dengan Sensor Ultrasonik
Authors: Yoski Milfiga Septa , Mukhaiyar Riki
Published: August 2021

Banyaknya aktivitas diluar rumah membuat seseorang melupakan aktivitas sehari – harinya di dalam rumah, diantaranya membersihkan rumah. Perkembangan ilmu teknologi modern dan otomatisasi perangkat elektronik saat ini membuat pekerjaan menjadi lebih  mudah. Diantaranya dalam kegiatan memberishkan rumah, maka dari itu dibuatlah sebuah alat prototipe robot pembersih lantai berbasis mikrokontroller dengan sensor ultrasonik. Dimana robot dapat membersihkan dan mengepel lantai rumah dengan waktu yang telah ditentukan, serta robot ini dapat mengetahui halangan yang terdapat pada jalur yang akan dilalui oleh robot tersebut. Alat ini terdapat arduino uno dan arduino nano berfungsi sebagai pusat kontrolnya, RTC(Real Time Clock),  dimana untuk mengatur jadwal robot bekerja sesuai jadwal yang telah ditentukan, motor DC berfungsi sebagai roda robot tersebut, pompa DC berfungsi untuk menumpahkan cairan pembersih lantai, 2 motor DC yang berfungsi untuk mengepel lantai tersebut, dan FAN yang berfungsi untuk mengeringkan lantai serta terdapat sensor ultrasonik untuk mendeteksi adanya halangan yang terdapat pada jalur yang dilalui oleh robot. Dari pengujian yang telah dilakukan alat bekerja baik dan sesuai yang telah direncanakan.
Sistem Monitoring Kendaraan Bermotor dengan Informasi GPS Berbasis Mikrokontroler dan Android
Authors: Putri Dian Eka , Hendri Hendri
Published: August 2021

Kendaraan bermotor adalah benda yang rentan hilang karena adanya tindakan pencurian. Untuk mengantisipasi  tindakan pencurian tersebut, maka sepeda motor tidak hanya dapat mengandalkan kunci ganda tambahan, seperti kunci gembok yang dipakai pada cakram roda sepeda motor. Sepeda motor perlu dilengkapi dengan sistem yang dapat digunakan untuk melacak posisi kendaraan dan mengendalikan sepeda motor dari jarak jauh oleh pemiliknya. Umumnya sepeda motor jarang yang memiliki GPS, terutama pada sepeda motor jenis Honda beat, maka sepeda motor perlu dilengkapi dengan perangkat dan sistem keamanan yang dapat terhubung ke android pemilik kendaraan. Sistem keamanan ini menggunakan Mikrokontroler Atmega 328 sebagai modul utama dan sebagai pengendalian modul-modul lainnya. Pada sistem ini juga diperlukan relai dc yang digunakan sebagai saklar, sensor GPS untuk mencari lokasi, wifi modul ESP 8266 untuk mendapatkan jaringan internet dan menghubungkan sistem yang ada pada sepeda motor dengan android pemilik. Pada android pemilik, diinstal aplikasi Telegram. Hasil penelitian pada tugas akhir ini berupa perangkat keamanan yang bisa dikontrol dari jarak jauh dan juga digunakan untuk mendapatkan data lokasi sepeda motor dengan akurat menggunakan koneksi internet.
Sistem Penanggulangan Kebakaran pada Gedung Bertingkat berbasis Arduino Mega2560 dan Aplikasi Map
Authors: Damara Wahyu , Hastuti Hastuti
Published: August 2021

Perkembangan populasi penduduk yang meningkat tajam serta keterbatasan lahan membuat pembangunan gedung bertingkat yang berfungsi sebagai tempat pemukiman maupun kawasan perkantoran semakin gencar dilakukan. Tujuan dari penelitian ini adalah membangun sistem penanggulangan dini kebakaran pada gedung bertingkat berbasis arduino mega2560 dan aplikasi map. Metode yang digunakan meliputi perancangan diagram blok, flowchart, perancangan mekanik dan perancangan software. Perancangan mekanik dilakukan dengan membuat miniatur gedung bertingkat. Perancangan software dilakukan dengan membuat program pada arduino IDE dengan pemograman bahasa C. Sistem dibuat menggunakan arduino mega2560 sebagai pusat kontrol sistem. Berdasarkan hasil pengujian didapati bahwa alat akan bekerja saat sensor flame mendeteksi adanya api maka buzzer sebagai alarm peringatan kebakaran akan menyala. Pompa air, motor servo dan solenoid valve mengatur arah aliran air untuk menjangkau dan memadamkan titik api pada gedung. Modul GPS yang digunakan pada sistem akan melacak data latitude dan longitude lokasi kebakaran. Modul SIM800L mengirimkan pesan informasi ke nomor pemilik gedung dan nomor pemadam kebakaran. Pesan berisikan teks “Terjadi kebakaran di Gedung BOX ! Sumber api di Lantai ...(berdasarkan keberadaan titik api) , lokasi ...(berdasarkan pembacaan koordinat GPS)“. Dengan mengklik titik koordinat yang ada pada pesan, maka lokasi kebakaran akan langsung ditampilkan di Google Maps. Penelitian ini menyimpulkan bahwa sensor flame dapat membaca api hingga jarak ≤ 200cm. Pesan informasi dapat diterima dalam rentang waktu kurang dari 15 detik. Lokasi yang ditampilkan pada Google Maps juga sangat akurat.
Rancangan Alat Pendeteksi Benda dengan Berdasarkan Warna, Bentuk, dan Ukuran dengan Webcam
Authors: Pulungan Ali Basrah , Nafis Zhafranul
Published: August 2021

Along with the times, technology is also developing so rapidly, one of the innovations in technological development is the use of webcams. the use of a webcam can be developed as a sensor in detecting an object through several stages of image processing. The use of a webcam aims to simplify an automation system so that it can be used to perform several tasks at once. Therefore, the author intends to design and manufacture an object detector with measurement parameters of the object's color, shape and size. This tool uses a webcam as a sensing sensor, and uses programming in PYTHON to recognize objects to be detected, and uses a servo motor to drive object actuators. The results of this tool have been tested and are able to detect objects properly based on predetermined color, shape and size. This tool is also able to separate objects that meet specifications from objects that do not meet specifications. Object detection using a webcam and an object separating actuator can work well.
Sistim Monitoring Pada Sorting Machine dengan HMI Berbasis PLC
Authors: Simanjuntak Doli Hasbi , Risfendra Risfendra
Published: August 2021

Di industri besar saat sekarang ini penggunaan PLC biasanya dipasangankan dengan sebuah alat interface yaitu HMI. Penerapan hasil pengembangan alat sortir benda di Jurusan Teknik Elektro Fakultas Teknik Universitas Negeri Padang masih menemui beberapa kendala, salah satunya dikarenakan pembuatan alat masih dikontrol oleh PLC saja. Diperlukan penyempurnaan pada alat sortir benda dengan menambahkan sistem monitoring. Hal ini dilakukan dalam upaya peningkatan kualitas dalam penguasaan dengan menggunakan PLC sebagai sistem kontrol dan kinerja HMI WEINTEK 8071ip dapat membantu untuk mengontrol dan memonitoring sistem kerja alat. Dalam perancangan komunikasi PLC merk omron dengan HMI WEINTEK 8071iP diawali dengan pembuatan blok diagram dan flowchart sistem. Sistem alat sortir benda yang dikontrol dengan PLC merk OMRON type CP1E akan ditampilkan pada HMI WEINTEK 8071iP menggunakan software EasyBuilderPro. Alat ini diharapkan dapat meningkatkan kinerja sebagai kontrol dan monitoring alat. Perancangan sitem kontrol HMI untuk alat sortir benda menggunakan HMI WEINTEK MT8071iP berjalan sesuai dengan fungsinya sebagai media kontrol dan monitoring sistem.
Implementasi Hysterisis Current Control Pulse Witdh Modulation (HCCPWM) Untuk Inverter 3 Fasa
Authors: Putra Tri Yogi , Yuhendri Muldi
Published: August 2021

Based on the source used, there are several types of converters, one of which is a voltage source converter (VSC). In this study, using a converter that can work as an inverter. In industry, an inverter is useful for supplying the AC voltage source from industrial plants with DC sources, by varying the voltage and output frequency of the inverter. The method used is the HCCPWM generation method or Hysterisis Current Control Pulse Witdh Modulation. This method was chosen because it has several advantages which are good stability, very fast transient response and good accuracy. To activate HCCPWM, a 3 phase reference current signal is first made in the Matlab Simulink, this reference current is then compared with the actual current from the current sensor, then the error is controlled with the hysteresis band. In Arduino mega2560, the pulses generated by HCCPWM in the Matlab Simulink are converted into a duty cycle. The modulated pulse generated by the Arduino PWM pin will be increased using a gate drive circuit, so that the voltage is obtained according to the voltage required by the Mosfet to activate the switch. The results of the tests that have been done show that the voltage source converter (VSC) designed in this study has worked well as intended. This can be seen from the actual current from the current sensor which has been compared with the reference voltage using the HCCPWM method which is included in the Simulink Matlab program.
Perancangan Alat Pengunci Pintu Dan Sistem Informasi Keberadaan Dosen Dalam Ruangan Menggunakan RFID Berbasis Ardiuno
Authors: Quithary AlThariqh Muhammad , Hastuti Hastuti
Published: August 2021

Penggunaan kunci pintu yang sekaligus sebagai pengaman, sudah digunakan sebelumnya namun belum optimal. Berkembanganya system informasi dan teknologi yang semakin canggih menunjukkan bahwa penggunaan RFID sebagai pengunci elektrik dapat mengoptimalkan  para pengguna untuk mengakses ruangan hanya dengan men-tag kartu ID pada bagian yang sudah disediakan pada kondisi pintu terbuka dan tertutup. Tujuan perancangan alat pengunci pintu dan system informasi dalam ruangan dapat memberikan informasi keberadaan dosen/pengguna dalam ruangan melalui status yang dapat dilihat dan diakses pada aplikasi telegram, dengan menggunakan pendekatan RFID berbasis arduino. Aplikasi telegram sebagai media informasi keberadaan pengguna dalam ruangan mempermudah seseorang yang ingin berhubungan dengan pengguna dalam ruangan untuk mengetahui keberadaannya. Hasil perancangan ini menggunakan komponen RFID sebagai Kunci Elektrik yang terhubung dengan Arduino Mega 2560, Driver Relay sebagai penghubung saklar on atau off dari Selonoid Door Lock pada pintu, penggunaan RTC sebagai indikator waktu pergantian status dosen dan saklar otomatis untuk mengaktifkan dan menonaktifkan rancangan alat dan penggunaan ESP8266 sebagai penghubung antara rancangan alat dengan media informasi Telegram dengan menggunakan jaringan internet (Wifi).

 

Kata kunci — Sistem Informasi , RFID, Arduino Mega 2560,  Selonoid Door Lock, Telegram
Rancang Bangun Alat Pengering Ikan Teri Mandiri Otomatis Berbasis Ardiuno Uno
Authors: Syani Ingrit , Hastuti Hastuti
Published: August 2021

Ikan teri merupakan sumber daya perikanan yang paling melimpah, sehingga pengolahan ikan teri kering menjadi salah satu pencarian bagi nelayan sekitaran pantai. Namun permasalahan yang sering terjadi pada proses pengeringan ikan teri yang dilakukan secara tradisional, dengan memanfaatkan panas dari matahari sebagai pengering yang membutuhkan waktu lama serta kurang higienis nya proses pengering tersebut yang biasanya dilakukan di area terbuka, dapat menyebabkan ikan teri terkontaminasi debu dan molekul lainya. Belum lagi jika cuaca tidak menentu dan hujan bisa menyebabkan busuk nya ikan teri karena tidak kering sempurna. Tugas akhir ini bertujuan untuk mengembangkan proses pengeringan ikan teri untuk menjadi lebih mudah. Perangkat ini terdiri dari panel surya, aki media penyimpanan energi, heater sebagai pemanas, kipas dc sebagai sirkulasi udara, ardiuno uno sebagai kontroller, DHT22 mengukur suhu dan kelembapan pada ruang pemanas dan buzzer sebagai alarm. Perangkat ini bekerja secara otomatis, jika suhu mencapai 65⁰C maka pemanas akan mati dan kipas menyala untuk mensirkulasikan udara. Saat kelembapan 40% maka alarm akan berbunyi menandakan sebagian ikan telah kering. Tugas akhir perangkat pengering ikan teri ini diharapkan dapat membantu proses pengeringan lebih mudah, menyingkat waktu dan ikan dari hasil pengeringan dengan perangkat ini lebih higienis, serta diharapkan perangkat pengering ini dapat berkembang seiring perkembangan teknologi.
Rancang Bangun DC Chopper Satu Kuadran Berbasis Simulink Matlab
Authors: Ihsan Azar , Yuhendri Muldi
Published: August 2021

Catu daya DC merupakan serangkaian komponen elektronik yang dapat menyuplai tegangan DC ke komponen elektronik lainnya. Setiap perangkat elektronik membutuhkan tegangan suplay yang berbeda-beda. Karena penggunaan catu daya yang luas ini, diperlukan suatu sistem yang dapat mengkonversikan tegangan DC dari suatu tingkat tegangan ketingkat tegangan lainnya. Maka salah satu cara untuk mengubah tegangan DC ketegangan DC lainnya digunakan sistem yang dikenal sebagai DC choper. Pada Sistem DC choper satu kuadran nilai rata-rata tegangan keluaran dan arusnya selalu positif dan dayanya selalu mengalir dari sumber ke beban. Paper ini mengusulkan DC chopper satu kuadran berbasis kontroller proportional (P). Sistem kendali diimplementasikan dengan menggunakan mikrokontroller arduino mega 2560 yang diprogram dengan simulink matlab. Peralatan sistem kendali dilengkapi dengan potensiometer sebagai penurunan tegangan input 200 VDC menjadi tegangan yang bervariasi sesuai dengan yang diinginkan yang diinginkan agar tegangan keluaran tetap stabil. Tegangan 200 VDC yang termasuk tegangan tinggi maka dibutuhkan IGBT untuk membuat arus yang lebih besar dan beroperasi dalam tegangan tinggi karena memiliki efesiensi yang lebih baik. Untuk mendeteksi tegangan tersebut dibutuhkan sensor tegangan yang terdiri dua buah resistor yang bernilai 330K dan 6,3K dan sensor arus yang digunakan unyuk mendeteksi arus, sensor arus yang digunakan sensor arus ACS712. Sistem DC choper satu kuadran diverifikasikan melalui percobaan di laboratorium dengan beban load resistor. Hasil pengujian menunjukkan bahwaDC chopper satu kuadran berbasis kontroller proportional yang diusulkan dalam paper ini telah bekerja dengan baik. Hal ini dapat dilihat dari tegangan output yang dihasilkan sesuai dengan tegangan yang diinginkan yang atur melalui pontesiometer.
Otomatisasi Manuver Beban Pada Jaringan Tegangan Menengah 20 Kv Menggunakan Arduino Mega 2560 Dan Scada
Authors: Atma Novita Firda Ayu , Risfendra Risfendra
Published: August 2021

Manuver jaringan distribusi saat dilakukan pekerjaan maupun terjadi gangguan berada di wilayah sebelum recloser, maka beban setelah recloser harus dilimpahkan agar tidak padam. Pengoperasian beberapa peralatan switching berupa relay pada jaringan, dapat menggunakan SCADA atau secara jarak jauh seperti LBS, recloser dan PMT dan dapat secara local. Pengoperasian menggunakan SCADA ini dilakukan melalu Human Machine Interface (HMI) yang terdapat single line diagram wilayah tersebut. Simulasi ini dikontrol menggunakan arduino mega 2560 yang diprogram dengan mengembangkan bahasa C dan output disesuaikan dengan keadaan lapangan seperti yang akan disimulasikan.
Laminados minimamente invasivos na reabilitação estética anterior
Authors: Montenegro Gil , Marçal Ricardo Lellis , Pinto Tarcisio
Published: August 2021

The search for a harmonious smile associated with minimally invasive and painless procedures, made the ceramic laminates take on a prominent role in facial aesthetics and consequently in smile aesthetics. The advances in adhesive techniques, ceramic materials and technologies associated with their manufacture, have made ceramic contact lenses a safe and predictable alternative for rehabilitation in cases of dental diastemas, restoring color, shape and position in the arch. Therefore, this case report aimed to demonstrate the application of porcelain veneers in closing diastemas in order to optimize the treatment. It was observed, with the clinical case presented, a very satisfactory result from the aesthetic and functional point of view.
Estruturação da face por meio dos fios de polidioxanona – relato de caso
Authors: Lages Renata Bandeira , Nunes Joseilson Barbosa , Oliveira Yves Viana Ramalho
Published: August 2021

Many facial rejuvenation techniques have been discovered for people looking for a younger look. In this context, the facelift using support threads made of polydioxanone (PDO) presented itself as a technique that, in addition to producing excellent postoperative results, is a minimally invasive procedure. It can neutralize the effects of aging by providing support and stimulation to the tissues of the areas around the patient’s problem, as there is the production of collagen and elastin. The present study aims to present a clinical case of a 68-year-old white female patient who had as main complaint the sagging and ptosis of the skin, the appearance of tiredness and falling of the corners of the lip, in which the PDO spiculated threads were inserted, reporting the changes caused on the face. The result was satisfactory, with improvement of the skin’s flaccidity, and the elevation of the labiolomental groove and the accumulation of fat in the mandibular body, with minimal side effects, being an effective and safe technique.
Técnica mais duradoura para nariz por meio da técnica Perfect Nose® - relato de caso
Authors: Carrera Emanuelle Teixeira , Vieira Eduardo Antônio de Castro , Vieira Patrícia Guedes Maciel
Published: August 2021

The nose is one of the most common complaints in facial aesthetics, rhinomodeling and rhinoplasty are alternatives to correct these defects, however, each with its particularities that demotivate the patient, as well as durability and complex postoperative, respectively. Thus, the objective of this work was to presente a new technique, called Perfect Nose®, which has numerous advantages when compared to conventional techniques. The result was extremely satisfactory according to the patient, as well as natural and safe.
CPlus Surgery® mento e pré-jowl – relato de caso
Authors: Carrera Emanuelle Teixeira , Vieira Eduardo Antônio de Castro , Vieira Patrícia Guedes Maciel
Published: August 2021

The mentum acts significantly in the facial profile. With a more vain society, aiming to age well and in serach of procedures with greater durability, the objective of this case repor tis to report a longe-lasting treatment option, which promotes the surgical projection of CPlus Surgery®, to compensate the entire processo f aging processo f aging that is inherent to every human being and in this way improving the loss of soft tissues and skeletal resorption. With a satisfactory result, this technique is very promising in Orofacial Harmonization.