bluuebunny/crossref_metadata_2025 huggingface dataset:
GLYCEROL AS ADDITIVE FOR FUELS – A REVIEW
Authors: FERREIRA M. O. , CARDOZO-FILHO L. , SILVA C. , SOUSA E.M. B.D.
Published: July 2021

Growing environmental concerns, along with the search for renewable energies that emit less CO2, put biodiesel in a favorable position. Biodiesel is commonly produced by the transesterification reaction between vegetable oils and methanol or ethanol, in the presence of a catalyst. With government incentives for biodiesel production in Brazil, there was an exaggerated increase in their production and hence the concern about the disposal of surplus glycerol. Therefore research is being developed with respect to the use of the surplus of glycerol. In this context, emerged as the alternative use of fuel additives, from glycerin to contribute to the development of new applications for innovative and environmentally-friendly processes. The bibliographic review presented here starts with describing the different glycerol production processes, characterization and analysis methods. Next, Glycerol-based processing methods are described, evaluating the main reaction parameters that interfere in process optimization.
NATURAL CONVECTION BOUNDARY LAYER FLOW ALONG A SPHERE EMBEDDED IN A POROUS MEDIUM FILLED WITH A NANOFLUID
Authors: RASHAD A. M.
Published: July 2021

A boundary-layer analysis is presented for the natural convec tion boundary layer flow about a sphere embedded in a porous medium filled with a nanofluid using Brinkman-ForchheimerDarcy extended model. The model used for the nanofluid incorporates the ef fects of Brownian motion and thermophoresis. The governing partial differential equa tions are transformed into a set of nonsimilar equations and solved numerically by an efficient implicit, iterative, finite-difference method. Comparisons with previously published work are performed and excellent agreement is obtained. A parametric study of the physical parameters is conducted and a representative set of numerical results for the velocity, temperature, and nanoparticles volume fraction profiles as well as the local skin-friction coefficient, local Nusselt and Sherwood numbers is illustrated graphically to show interesting features of the solutions.
DENSITIES AND EXCESS MOLAR VOLUMES FOR BINARY SOLUTION OF WATER + ETHANOL, + METHANOL AND + PROPANOL FROM (283.15 TO 313.15) K
Authors: SHALMASHI A. , AMANI F.
Published: July 2021

Densities for binary solutions of three alcohol (Ethanol, Methanol and propanol) with water over the whole composition range have been measured at temperatures from (283.15 to 313.15) K in 10 K intervals and atmospheric pressure (101.3 kPa). From these data, the excess molar volumes (VE) were calculated. The excess molar volumes for these systems were found to be negative across the whole composition and at all temperatures investigated. The excess molar volumes for ethanol and propanol + water become less negative with increasing temperature and conversely the excess molar volumes for methanol+ water become more negative with increasing temperature. The standard deviations (σ) for densities were calculated that ranged from 0.0000 to 0.001.
INVESTIGATION OF DEHYDRATION AND REHYDRATION KINETICS OF PEAS SUBJECTED TO OPEN-AIR SUN DRYING O
Authors: İSMAİL O. , BEYRİBEY B. , DOYMAZ İ.
Published: July 2021

The aim of the present work was to investigate the kinetics of dehydration and rehydration of the open-air dried peas for untreated and pretreated samples. The models of Page, Wang & Singh, Parabolic and Midilli et al. were applied to experimental data during dehydration and the models of Peleg’s, Weibull, first-order kinetic and exponential association were used in rehydration experiments and the corresponding parameters of the models were observed. The models of Midilli et al. and Weibull were found as the suitable models for dehydration and rehydration of the peas, respectively. The highest diffusion coefficients with the values of 6.98*10-11 m2s-1 with the blanched peas in the dehydration and 9.98*10-12 m2s-1 with the salted peas in the rehydration were achieved.
VEHICLE ROUTING FOR PUBLIC TRANSPORT WITH ADAPTED SIMULATED ANNEALING
Authors: RODRÍGUEZ D. A. , OLIVERA A. C. , BRIGNOLE N. B.
Published: July 2021

This paper presents an Adapted Simulated Annealing (ASA) algorithm to solve an instance of the vehicle routing problem (VRP): the intercity public transport problem (IPTP). This combinatorial optimization problem was effectively solved by means of a robust method. Its performance was achieved thanks to the incorporation of an auxiliary memory and a novel choice of the neighbours. The model is based on initial random solutions capable of generating appropriate bus routes and frequencies in a large solution space. We have established a search strategy that provides excellent responses at the process level. The intercity line linking Bahía Blanca and Punta Alta was chosen with the intention of evaluating ASA performance. The real trafficbehavior has been represented by means of the simulation software called SUMO. The computational results clearly indicate that the proposed approach constitutes an improvement in the ability to search for high quality solutions that facilitates the convergence.
A REVIEW OF BIOPESTICIDE PRODUCTS AS ECOLOGICAL ALTERNATIVE AGAINST FALL ARMYWORM (SPODOPTERA FRUGIPERDA) IN AFRICA
Authors: Ekenwosu J. U. , Okorie P. U. , Ikpeama C.
Published: July 2021

Spodoptera frugiperda, Fall Armyworm (FAW), poses an existential threat to farmers in Africa given their destructive effect on crops. This is essentially the case in south-eastern Nigeria where major crops such as cassava and maize are highly vulnerable to the adverse effects of the pest. This paper reviewed published work on the availability of biopesticides that can control FAW without compromising environmental sustainability. Altogether, 50 active ingredients have been identified as potential biopesticides to control fall armyworm globally, out of which 29 were described in Africa. Although there are reports of remarkable successes in the application of these organic pesticides, there is a need to identify more biopesticides and also establishing the most effective modes of application for managing the pest. This review examines possible biopesticides that may be used in controlling FAW in Africa and also provides insight for further research.
PETROGENESIS, MAJOR OXIDES AND TRACE ELEMENTS GEOCHEMISTRY OF MIGMATITE IN AJUBA, KWARA STATE, NIGERIA
Authors: Adedoyin A. D. , Atat A. G. , Atat J. G.
Published: July 2021

Petrogenesis, major oxides and trace elements geochemical study was carried out on migmatite in Ajuba. The study area is located on Latitudes 8° 05'N and 8°13'N and Longitudes 5°23'E and 5°30'E. Five rock samples were taken from the migmatite outcrops and used for petrographic and geochemical analyses. The geochemical analysis was done using X-ray Fluorescence Spectrometer technique. The dominant rock type is migmatite; gneiss and granite outcrops were also found in sparse distribution.  Ptygmatic folds, which constitute the palaeosome, is the common structure observed on the migmatite rock. The petrographic analysis shows that the migmatite consists of quartz, biotite, plagioclase, hornblende and microcline. The major oxides analysis indicates SiO2 as the dominant oxide with concentration range values (70.71 wt. % - 79.32 wt. %) and average of 74.80 wt. %. Al2O3 (14.98 wt. % - 16.44 wt. %, average: 15.70 wt. %) and Fe2O3 (9.10 wt. % - 15.41 wt. %, average: 12.39 wt. %), K2O (6.67 wt. % - 8.86 wt. %, average: 7.50 wt. %) and CaO (0.49 Wt. % - 4.64 wt. %. average: 2.73 wt. %). P2O5, MnO and TiO2 are less than 1.0 wt. %. The trace elements analysis indicates the concentration distributions: Rb (0.11-0.15 ppm, average 0.13 ppm), Co (0.04-0.17 ppm, average 0.10 ppm). Trace elements ˂ 0.10 ppm are Zn, W, Ni, Cu, V and Pb. From the petrographic and geochemical assessment, the petrogenesis of the migmatite has silica-rich igneous parentage. Moreover, the plots of SiO2-CaO and K2O-SiO2 placed the migmatite on the “upper boundary field of Francisian Greywacke” protolith and Shoshonite series, respectively.
دلالة ألفاظ المسابقة و المسارعة و المنافسة في القرآن الكريم
Authors: Anggi Anggi Dermawan
Published: July 2021

القرآن الكريم مصدر الشرائع الأساسية في الإسلام. و هو منهج الحياة الذي يستخدمه الإنسان.  كما هو المعروف أن لغة القرآن الكريم عربية. اللغة العربية غنية بالمفردات و لها اختلاف وتنوع معانيها و من المفردات مالها علاقة بغيرها مثل الترادف والمشترك و التضاد وماليست لها علاقة. و ظهرت هذه المفردات في القرآن الكريم حيث دل على أنه معجزة من الله تعالى. و يستعمل القرآن على ألفاظ المسابقة والمسارعة والمنافسة لها الترادف. مثلا يعرف أن ألفاظ المنافسة من آية القرآن منها : (المطففين :٢٦). فهذا البحث من خلال نهج الدلالات باستخدام الطريقة النوعية وتقنيات تحليل المضمون ، كانت الآيات المشتملة على ألفاظ المسابقة والمسارعة والمنافسة لها معانيها المختلفة حسب سياقات استعمالها في الآيات القرآنية و تابع ألفاظ المسابقة والمسارعة والمنافسة على القيم التربوية التي تتأسس على القيمتين هما قيم اجتماعية و قيم دينية في عبادة المسلمين و حياتهم .

الكلمات الرئيسية :  الترادف : المسابقة ، المسارعة و المنافسة : التربية الدينية
Efektivitas Pemberian Beberapa Dosis Kompos Kulit Bawang Merah Terhadap Serapan Hara Pada Polikultur Selada Dan Terung
Authors: Banu Luluk Syahr , Sholihah Siti M.
Published: July 2021

Limbah kulit bawang merah sangat melimpah. Adanya beberapa zat dan senyawa yang terdapat pada kulit bawang merah bisa memberikan kesuburan sehingga dapat mempercepat pertumbuhan buah dan bunga pada tanaman. Terung dan selada juga termasuk dalam tanaman yang bernilai ekonomis tinggi serta berpotensi dibudidayakan secara poliktur. Namun, banyak permasalahan dalam pertumbuhan terutama dalam penyerapan hara. Tujuan Penelitian iniadalah mengetahui pengaruh dosis kompos  kompos kulit bawang merah yang efektif bagi pertumbuhan dan serapan hara oleh tanaman terung dan selada secara polikultur. Rancangan yang digunakan pada percobaan ini adalah Rancangan Acak Kelompok dengan lima taraf perlakuan yang terdiri dari dosis kompos kulit bawang merah dengan tanah terdiri atas 0 gr/plibag, 400 gr/polibag, 600 gr/polibag, 800 gr/polibag dan 1000 gr/polibag dengan 5 ulangan pada tanaman selada dan terung. Variabel Pengamatan adalah tinggi tanaman dan jumlah daun tanaman serta analisisi kimia kompos kulit bawang merah. Hasil Penelitian menunjukkan beberapa dosis kompos kulit bawang merah tidak berpengaruh nyata bagi pertumbuhan tinggi tanaman terung, tinggi tanaman selada dan jumlah daun tanaman terung pada seluruh umur tanaman. Beberapa dosis kompos  kompos kulit bawang merah berpengaruh nyata bagi pertumbuhan jumlah daun pada umur 21 dan 28 HST secara polikultur.
Pemodelan Proses Bisnis PMB Menggunakan Pendekatan Berorientasi Objek berbasis Prototyping dengan Metodologi RAD
Authors: Yasmiati Yasmiati , Suwarni Suwarni , Desmiwati Desmiwati , Susilo Andi
Published: July 2021

Kegiatan Penerimaan Mahasiswa Baru (PMB) merupakan tahapan awal seorang calon mahasiswa masuk ke perguruan tinggi. Aplikasi Sistem penerimaan mahasiswa baru menjadi bagian yang penting dalam mendukung layanan yang maksimal kepada calon mahasiswa. Studi ini menganalisis proses bisnis dengan pemodelan fungsional. Metodologi Rapid Application Development (RAD) berbasis Prototyping kami gunakan dalam pengembangan sistem dengan pendekatan berorientasi objek. Disain riset secara spesifik menguraikan empat tahap yaitu identifikasi, pemodelan, dokumentasi, dan terakhir verifikasi dan validasi proses bisnis dan model fungsionalnya. Riset ini menunjukkan bahwa proses bisnis dan model fungsional dapat secara optimal selaras dengan kebutuhan fungsional sistem.    Kata kunci: PMB, proses bisnis, pemodelan fungsional, RAD, dan Prototyping
Youth justice in Australia: Themes from recent inquiries
Authors: Clancey Garner , Wang Sindy
Published: July 2021

The administration of youth justice systems in Australia is a state and territory responsibility. Almost all states and territories have in recent years undertaken extensive reviews of their youth justice systems. In addition, various oversight bodies (such as ombudsmen, inspectors of custodial services, children’s guardians and advocates), Commonwealth agencies (such as the Australian Law Reform Commission), and non-government organisations (such as Amnesty International) have also completed reviews and published reports in this area. The catalysts for some of these reviews were incidents in youth justice detention centres which captured national (and international) attention. A key theme arising from many of these reviews is the need for youth justice detention to be a measure of last resort. Detention, especially for young people who have been victims of abuse and neglect or who have mental illness and intellectual disabilities, is often detrimental and has little benefit in reducing recidivism. This paper explores this and other key themes arising from the recent reviews into Australian youth justice systems.
The price elasticity of demand for illicit drugs: A systematic review
Authors: Payne Jason , Manning Matthew
Published: July 2021

Three pillars—harm reduction, demand reduction and supply reduction—underpin the harm minimisation framework of Australia’s drug policy. Much of the activity undertaken by law enforcement is aimed at reducing the availability of illicit drugs and thereby increasing price and reducing demand. This article presents a contemporary, systematic review of research exploring the price elasticity of demand for illicit drugs. Overall, the results indicate that the demand for illicit drugs is, on average, weakly price inelastic—a 10 percent increase in the price of illicit drugs results in a decrease in demand of approximately nine percent. The degree of elasticity varies by drug type, with the greatest elasticity indicated, albeit on a small number of studies, for amphetamine-type substances. The international differences seen point to a need for more Australian research, ideally with robust experimental methodologies and across a range of drug types.
Optimising reflective capacity of nursing students after high fidelity simulation: A practical approach
Authors: Tutticci Naomi , Coyer Fiona , Ryan Mary
Published: July 2021

Navigating simulation as a nursing student is challenging. It requires critical thinking, high levels of reflection and emotional investment. Reflection fatigue can result from knowing that reflection is important but feeling reluctant to expose oneself to critique. This practical discussion explores how nurse educators can optimise nursing students’ reflective thinking within simulation and develop debrief strategies that optimise critical reflection. Debrief is a teaching and learning episode within simulation that aims to challenge students to develop their thinking and practice, without compromising instruction. Much debrief practice tends towards instruction at the expense of student self-exploration, and preparation for assessment at the cost of critical reflection. The practical approach to debrief discussed here is a timely reminder to step back and re-assess the practice of debrief. This discussion will assist nurse educators to implement a debrief that supports reflection at the highest level. Four familiar strategies of teaching and learning, when combined within debrief, can optimise the reflective capacity of nursing students: role modelling and vicarious observation, scaffolding of reflective thinking, emotional processing, and student-centred reflection. The practical strategies presented are relevant to both Australian and international nursing higher education contexts.
The Making of an Egyptian Social Media Influencer
Authors: Ezzat Hanan
Published: July 2021

This qualitative study, set against the backdrop of Egypt, examines how social media influencers construct their online identity and build their online persona. Social media, which have been primarily developed in the West, have infiltrated the Egyptian society; they have opened doors to different forms of personae and content such as social media influencers. In Egypt their numbers have increased, and they have become an important part of the social media scene. They aim to build their audiences and fan bases with the ultimate objective of monetising their presence. This study focuses on nine Egyptian social media influencers, through employing in-depth interviews, and seeks to explore how they construct their online identity and how they build their distinct personae. The analysis revealed that they build a distinct online person for themselves to impress their audiences and fans. Moreover, they perform authentically; they seek to be perceived as authentic and to display this authenticity they undertake a number of processes.
Joint enterprise and secondary liability
Authors: Smith Sir John
Published: July 2021

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Punishment and public relations
Authors: Stannard John E
Published: July 2021

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How has the common law survived the 20th century?
Authors: Hedley Steve
Published: July 2021

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Racical particularism: a natural law of context
Authors: Jabbari David
Published: July 2021

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The politics of legality
Authors: Harvey Colin J
Published: July 2021

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The model of social relations: strategic behaviour, trust and loyalty
Authors: Savirimuthu Joseph
Published: July 2021

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Protecting the marginalised: the role of the European Convention on Human Rights
Authors: Harvey Colin , Livingstone Stephen
Published: July 2021

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Citizens and legislators of the world
Authors: Ward Ian
Published: July 2021

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How near is a written constitution?
Authors: Brazier Rodney
Published: July 2021

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Willing landlords, unresponsive business tenants
Authors: Carson Rosemary , Dawson Norma
Published: July 2021

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Personal injury litigation: the case for legal aid
Authors: Capper David
Published: July 2021

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Mary and Jodie: the case of the conjoined twins
Authors: Walker Robert
Published: July 2021

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'Subterranean land law': rights below the surface of the land
Authors: Howell Jean
Published: July 2021

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Nationality, citizenship and the meaning of naturalisation: Brubaker, the United Kingdom, EU citizens, third-country nationals and the European Union
Authors: White Robin M
Published: July 2021

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Book reviews
Authors: Guelke Adrian , Jack Brian , Winter Jo , Elliot Mark , O'Neill Brian Cian , Fox Lorna
Published: July 2021

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Comparing standing regimes from a separation of powers perspective
Authors: Tom Zwart
Published: July 2021

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The Legal Services Commission: brave new world for legal aid?
Authors: Capper David
Published: July 2021

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'O tempora, O mores'
Authors: Gillen Honourable Mr Justice
Published: July 2021

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National Irish Bank v RTE and finding the balance: breach of confidence, privacy and the public interest test in England and Ireland
Authors: Fenwick Helen , Phillipson Gavin
Published: July 2021

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SISTEM KENDALI KECEPATAN KIPAS MENGGUNAKAN MODUL WIRELESS NRF24L01 DENGAN METODE SIMPLEX BERBASIS ARDUINO
Authors: Rasyid Abdul , I Ishak , Ramadhan Mukhlis
Published: July 2021

Pemanfaatan sistem kendali jarak jauh membantu dalam menyelesaikan hampir segala urusan di zaman sekarang ini, sistem yang digunakan untuk membuat suatu perangkat menjadi terkendali sesuai dengan keinginan manusia disebut sebagai sistem kendali, sistem kendali jarak jauh dapat dimanfaatkan untuk menjalankan alat-alat yang dapat meringankan pekerjaan manusia dalam kehidupan sehari hari mulai dari menghidupkan televisi, kipas angin, dan alat elektronik lainnya. Telah banyak digunakan peralatan elektronik yang dapat dikendalikan dengan menggunakan remote control yang menggunakan infra merah (Infra red) sebagai media komunikasinya, namun penggunaan infra red memiliki beberapa kelemahan yaitu komunikasi harus secara segaris lurus dan dari jarak yang sangat dekat. Oleh karena itu hadirlah suatu terobosan baru sistem kendali jarak jauh yaitu sebuah modul wireless nrf24l01. Modul wirelles adalah cara yang berbeda untuk menghubungkan peralatan elektronik pada jarak relative dekat, yang dapat dianggap sebagai pengganti kabel. Efisiensi sebuah sistem kendali yang dapat membantu para pekerja gudang untuk mengendalikan kipas seperti, menghidupkan dan mengatur kecepatan kipas tanpa harus mendatangi lokasi gudang dengan memanfaatkan sistem kendali wireless. Dengan adanya sistem kendali kecepatan kipas jarak jauh menggunakan wireless dapat menghemat biaiya penggunaan kabel dan dapat membantu mempermudah mengontrol kecepatan kipas dari jarak jauh
RANCANG BANGUN ALAT PENDETEKSI KEBOCORAN REGULATOR GAS LPG VIA SMS MENGGUNAKAN MODUL GSM DAN SENSOR MQ-6 BERBASIS ARDUINO UNO
Authors: Sirai Rivaldo , Erwansyah Kamil , Jaya Hendra , Winata Hendryan
Published: July 2021

Kebocoran pada tabung atau instalasi gas merupakan salah satu risiko penggunaan Liquefied Petroleum Gas , apabila langkah penanggulangannya terlambat dan tidak tepat bisa mengancam keselamatan dan kesehatan. Kebocoran LPG tidak hanya rentan menyulut kebakaran atau ledakan bila terkena api, juga sangat berbahaya bagi kesehatan tubuh ketika terhirup, LPG memiliki karakteristik yang mudah terbakar serta memiliki berat jenis yang lebih besar dari udara sehingga sulit untuk mendeteksi gas tersebut apabila terjadi kebocoran pada tabung, yang disebabkan oleh gas ini, dikarenakan terakumulasi pada bagian bawah ruangan serta mudah terbakar , hal ini akan memiliki dampak yang lebih berbahaya apabila rumah sering ditinggal dalam kondisi regulator masih terpasang pada tabung.Oleh karena itu dibuatlah system monitoring kebocoran gas menggunakan fitur tambahan yaitu Short Message Service , yang dapat mengirim pesan notifikasi ketika kebocoran pada LPG telah melewati batas normal yang dapat memicu terjadinya kebakaran yang dapat menelan korban.Dengan demikian system monitoring kebocoran gas LPG ini dapat menginformasikan apabilah terdeteksi kebocoran gas LPG yang akan diberikan kepada pengguna melalui SMS (Short Message Service)
ANALISIS DATA MINING MENGGUNAKAN TEKNIK SINGLE LINKAGE UNTUK KLASTERISASI KEY PERFORMANCE INDEKS PEGAWAI DENGAN PENDEKATAN EUCLIDEAN DISTANCE (STUDI KASUS DI STMIK TRIGUNA DHARMA MEDAN)
Authors: T Tugiono
Published: July 2021

Key Performance Indeks (KPI) merupakan salah satu sarana yang digunakan oleh pimpinan STMIK Triguna Dharma untuk memonitoring dan memicu pegawai-pegawainya agar terus meningkatkan kinerjanya. Hasil penilaian dari KPI pegawai berupa pemberian insentif kepada pegawai. Penelitian ini dilakukan dengan menggunakan Data Mining Teknik Single Linkage untuk menganalisa data kinerja pegawai yang sudah pernah mendapatkan KPI sebelumnya, sehingga ditemukan knowledge baru yang dapat digali dari analisa tersebut.  Hasil pengujian Teknik Single Linkage adalah mendapatkan data indikator atau variabel yang paling dominan sebagai penentu dalam kelayakan penerima KPI. yaitu variabel aspek disiplin yang terdiri atas kehadiran, kedatangan tepat waktu dan kehadiran briefing. Aspek disiplin tersebut memiliki peranan sebanyak 90% dari total penilaian untuk kelayakan penerima KPI.
IMPLEMENTASI SISTEM KEAMANAN DATABASE DATA PELANGGARAN HUKUM DISIPLIN PRAJURIT MENGGUNAKAN ALGORITMA ADVANCED ENCRYPTION STANDARD 128 BIT PADA PENGADILAN MILITER I-02 MEDAN
Authors: Zalukhu Kristovorus , Syahra Yohanni , Syahputra Trinanda
Published: July 2021

Pengadilan Militer I-02 Medan memiliki masalah terkait pengamanan data. Khususnya database data pelanggaran hukum disiplin prajurit. Data pelanggaran tersebut ditransmisikan melalui jaringan komunikasi. Dari aspek keamanan menimbulkan kemungkinan adanya pihak yang tidak bertanggung jawab untuk memodifikasi data-data tersebut. Sehingga memerlukan sebuah metode yang disebut dengan kriptografi untuk melakukan pengamanan database data pelanggaran hukum disiplin prajurit.Dari masalah tersebut diatas, pada penelitian ini akan menggunakan salah satu algoritma kriptografi yaitu: advanced encryption standard yang merupakan sebagai solusi dalam pengamanan database data pelanggaran hukum disiplin prajurit. Diharapkan dengan algoritma advanced encryption standard dapat diterapkan untuk menyelesaikan masalah diatas.Hasil yang didapatkan dari penelitian ini adalah sebuah sistem terpadu yang mampu menyelesaikan masalah pada Pengadilan Militer I-02 Medan khususnya dalam hal pengamanan database data pelanggaran hukum disiplin prajurit. Diharapkan pengamanan database tersebut dapat ditingkatkan lagi seiring dengan perkembangan teknologi
Automatic Scroll Saw System Dengan Teknik Kendali Kecepatan Pulse Width Modulation (PWM) Berbasis Arduino UNO
Authors: Pranata Ardianto
Published: July 2021

Scroll Saw merupakan gergaji mesin yang dikhususkan untuk pemotongan pola-pola khusus. Biasanya digunakan untuk kerajinan tangan dengan material tipis seperti tripleks atau cangkang kelapa. Scroll saw yang memanfaatkan tenaga listrik dan motor penggerak biasanya memiliki kecepatan konstan dan tetap, sehingga tidak jarang objek yang dipotong akan rusak atau pecah terutama untuk objek yang ketebalan dianggap tipis. Oleh karena itu dibutuhkan sebuah kendali kecepatan otomatis yang dapat menyesuaikan secara otomatis berdasarkan salah satu faktor objek seperti ketebalannya. Dengan memanfaatkan arduino sebagai kendali otomatis serta teknik kendali kecepatan yakni pulse width modulation (PWM) serta sensor ultrasonic untuk mendeteksi ketebalan objek yang dipoting. Sistem diharapkan mampu menyesuakain kecepatan secara otomatis pada saat proses pemotongan berdasarkan ketebalan objek. Sehingga meminimalisir kerusakan objek yang dipotong.
Sistem Pakar Untuk Pendiagnosaan Karies Gigi Menggunakan Teorema Bayes
Authors: Hafizah Hafizah , Tugiono Tugiono , Azlan Azlan
Published: July 2021

Penelitian ini membahas tentang penggunaan sistem pakar dalam mendiagnosa Karies Gigi dengan perhitungan Teorema Bayes. Konsep Teorema Bayes akan dimasukkan dan diterapkan ke dalam suatu sistem yang berbentuk aplikasi layanan diagnosa untuk dapat dimanfaatkan oleh masyarakat luas dalam mengidentifikasi sekaligus mendiagnosa Karies Gigi berdasarkan gejala-gejala yang dialami oleh masyarakat. Karies Gigi merupakan sebuah penyakit yang merusak lapisan gigi secara permanen dan membentuk lubang kecil pada gigi. Karies gigi umumnya disebabkan kurangnya kebersihan gigi, mengkonsumsi makanan manis dan minuman manis. Hasil dari pembahasan dalam penelitian ini nantinya berbentuk aplikasi sistem cerdas pendiagnosaan Karies Gigi yang dapat dijadikan sebagai solusi pencegahan dan penanganan dini terhadap penyakit Karies Gigi.
Analisis Data Mining Pada Strategi Penjualan Produk PT Aquasolve Sanaria Dengan Menggunakan Metode K-Means Clustering
Authors: Marsono Marsono , Saripurna Darjat , Zunaidi Muhammad
Published: July 2021

Aquasolve adalah perusahaan manufaktur yang berbasis di Jakarta, ibu kota Indonesia. Perusahaan telah mapan selama bertahun-tahun dan juga diakui selama bertahun-tahun komitmennya dalam bidangnya. Fasilitas ini memiliki lingkungan yang bersih, sehat dan dilengkapi dengan sertifikasi Good Manufacturing Practice karena memperhatikan factor-faktor kebersihan. Aquasolve mengkhususkan diri dalam perwatan gigi secara oral. Akan tetapi, perusahaan mengalami beberapa masalah dalam pengolahan data yang begitu banyak. Sehingga mengalami kesulitan dalam mengelompokkan data tersebut dan menentukan tujuan yang akan mereka ambil.Untuk dapat menyelesaikan permasalahan yang ada maka salah satu cara yang dapat dilakukan untuk pemanfaatan data dalam mengelompokkan item produk berdasarkan tingkat penjualan adalah dengan menggunakan teknik data mining. Adapun teknik yang digunakan dalam hal ini adalah Algoritma K-Means. K-Means adalah salah satu teknik dalam data mining dalam mengelompokkan data (clustering). Hasil dari penelitian ini adalah, mengelompokkan data berdasarkan tingkat supplay dan penjualan terhadap item produk pada PT Aquasolve Sanaria. Sehingga perusahaan dapat mengetahui keinginan pasar terhadap produk mereka.
La bioeconomía: un nuevo enfoque sobre la biotecnología
Authors: Curtis Gisela M. , Pérez Gustavo A.
Published: July 2021

El análisis de la economía en las empresas biotecnológica cobra cada vez más importancia dado que en los últimos años, a medida que ha ido ganando mercados, y en algunos casos reemplazando a técnicas tradicionales de producción, consiguiendo mejorar y simplificar las metodologías de trabajo, su rol dentro del sector de la industria de procesos se ha magnificado La multitud de variables a tener en cuenta en la mejora de los costos operativos, para la maximización de los beneficios, indican que aún resta un largo camino de estudio sobre esta industria relativamente nueva que cada día tiene más para ofrecer.
Ingeniería química: una breve reseña
Authors: Picado Apolinar , Espinosa Rodolfo
Published: July 2021

Este artículo explora los orígenes de la Ingeniería Química. Se trata principalmente del surgimiento del concepto de Ingeniería Química, el reconocimiento del campo como una disciplina independiente y su desarrollo inicial. Si bien la concepción de Ingeniería Química tiene lugar en Gran Bretaña, la disciplina se desarrolló fundamentalmente en los Estados Unidos, donde pronto tomó la forma en que la conocemos hoy. Dos décadas después de la concepción, la nueva disciplina encontró su espacio en universidades latinoamericanas (Chile, Argentina). La disciplina y profesión se desarrolló a medida que la propia industria crecía rápidamente, en respuesta a una demanda creciente de la sociedad por los productos de la industria química. Se consolidó la creación de la Ingeniería Química como programa académico y se ofertó en muchos países, tanto en aquellos con tradición en educación en el área, como en otros en donde el programa fue una novedad.
SYSTEMATIC REVIEW: THE MAIN METHODS OF RESTITUTION OF DEGRADED AREAS IN THE CERRADO
Authors: Santos Gabrielli De Almeida , Milani Jaçanan Eloisa De Freitas
Published: July 2021

The Cerrado occupies 24% of the Brazilian territory, half Amazon extension, and despite having the richest flora among the world’s savannas, it has been suffering deforestation rates as same as Amazon. Consequently, it is estimated that 57% of Cerrado is degraded. In this context, the present paper aimed to accomplish a systematic review of the last 10 years which answered the following question: “what are the main methods of restitution of degraded areas in the Cerrado?”. Therefore, the methodology was divided into 5 stages: papers identification in the research platform Google Scholar; title screening to exclude duplicates; variable eligibility; inclusion and analysis. Within the 44 analyzed papers, the biggest amount of publication occurred in 2011. Distrito Federal, Minas Gerais e Mato Grosso do Sul were the states with more publications. The most studied Cerrado physiognomic vegetation was the Cerrado sensu stricto. Active restitution was the most abundant. 80% of the papers were labelled as restoration and the rest as recovery. Based on this study it is conclude that the most used restitution method in the Cerrado degraded areas was the active restoration with drift planting and direct seeding.
Perceived Stress among Adolescent School Students in Hubli: A Cross-Sectional Study
Authors: Gajula Madhavi , Bant Dattatreya , Bathija Geeta V
Published: July 2021

Background: Psychological morbidity in children and adolescents is high. The present study was done to assess the level of perceived stress and psychological morbidities among secondary school students. Methods: A cross-sectional study was done on 311 adolescent students in 9th and 10th classes of two government and two private schools in Hubli city, Karnataka. A validated and culturally adapted version of the 12-item general health questionnaire (GHQ-12) and perceived stress scale (PSS-10) was administered with Cronbach's alpha of 0.74. coGuide software was used for analysis. Results: Out of 311 students, 159 (51.13%) were males; 50.5% were from government schools, 72.3% were from 10th class while 27.7% were from 9th class. On assessment by PSS-10 scale, 11.9% had low stress, 63.7% had average stress, and 24.4% were highly stressed. According to GHQ scale, 43.4% had evidence of distress while 50.2% had severe psychological distress. Conclusion: There was a high prevalence of stress among school students. It calls for regular assessment by trained psychologists. Integration of mental health services with school health services is the need of the hour.
Evaluation of the conditions of drill pipes failure during tripping operations
Authors:   Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine, Kryzhanivskyi Ye. , Vytyaz О. ,   Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine, Tyrlych V. ,   Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine, Hrabovskyi R. ,   Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine, Artym V. ,   Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine
Published: July 2021

The experimental evaluation of the power criterion for the metal fracture of the reserve and the long operated drill pipes was carried out. The conditions under which, during tripping operations, the failure of explored drill pipes, containing external or internal transverse annular cracks are possible. An interrelation between the depth of critical external or internal transverse annular cracks in drill pipes with the weight of the drilling string is considered, taking into account the influence of dynamic loads during tripping operations. It is shown that internal transverse annular cracks in lowering operating drilling strings at depths of more than 1400 m are more dangerous than external ones, while at depths up to 1400 m, external cross-sectional circular cracks are more dangerous.
Effect of compact inclusion on the natural frequencies of vibrations of a pipe string in a well
Authors:   Institute of Oil and Gas Problems (OGRI), Russian Academy of Sciences, Moscow, Svalov A.M.
Published: July 2021

The influence of small-size inclusion of pipes in a well column on the natural frequency of its longitudinal vibrations is investigated. Using the asymptotic expansion in a small parameter, an analytical relation is obtained that describes the change in the period of the column oscillations in the form of some additional small term to the period of the homogeneous column oscillations. Numerical calculations show that the obtained analytical relations almost accurately describe the oscillation period of a column with a massive compact inclusion, while its difference from the oscillation period of a homogeneous column is within ~20%. The results obtained can be useful for preventing resonant phenomena in the drill string when drilling wells, as well as for optimal use of the longitudinal vibrations of the tubing string to influence the bottom-hole zones of producing wells.
Results of experimental studies of integrated physico-chemical impact in carbonate reservoirs
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Rabaev R.U. , Sultanov Sh.Kh. ,   Ufa State Petroleum Technological University, Ufa, Russia, Andreev V.E. ,   Ufa State Petroleum Technological University, Ufa, Russia,   State Autonomous Scientific Institution «Strategic Studies Institute of the Republic of Bashkortostan», Ufa, Russia, Chibisov A.V. ,   Ufa State Petroleum Technological University, Ufa, Russia,   State Autonomous Scientific Institution «Strategic Studies Institute of the Republic of Bashkortostan», Ufa, Russia,   State Autonomous Scientific Institution «Strategic Studies Institute of the Republic of Bashkortostan», Ufa, Russia, Chizhov A.P. ,   Ufa State Petroleum Technological University, Ufa, Russia,   State Autonomous Scientific Institution «Strategic Studies Institute of the Republic of Bashkortostan», Ufa, Russia
Published: July 2021

The article highlights the experimental studies results of carbonate rock dissolution kinetics in order to develop effective methods of slowing down the acid reaction rate in the heterogeneous structures. It was found that the intensity of carbonate reservoirs leaching process with the addition of hydrocarbon solvents such as dioxanes increases due to the acetals transition to the oil phase, dissolution of highly active oil components and more intense penetration of an aqueous solution of hydrochloric acid to the carbonate matrix of the reservoir rock, which intensifies the process of leaching. The technology of complex physico-chemical impact on carbonate reservoirs has been developed. It is shown that the use of a aqueous hydrochloric acid solutions mixture and an organic solvent leads to an increase in the dissolution efficiency to 88% and the reaction rate increases by a factor of 3.5.
Moire Is Different
Authors: Shi Wenyuan
Published: July 2021

Graphene, as the thinnest material ever found, exhibits unconventionally relativistic behaviour of Dirac fermions. However, unusual phenomena (such as superconductivity) arise when stacking two graphene layers and twisting the bilayer graphene. The relativistic Dirac fermion in graphene has been widely studied and understood, but the large change observed in twisted bilayer graphene (TBG) is intriguing and still unclear because only van der Waals force (vdW) interlayer interaction is added from graphene to TBG and such a very weak interaction is expected to play a negligible role. To understand such dramatic variation, we studied the electronic structures of monolayer, bilayer and twisted bilayer graphene. Twisted bilayer graphene creates different moiré patterns when turned at different angles. We proposed tight-binding and effective continuum models and thereby drafted a computer code to calculate their electronic structures. Our calculated results show that the electronic structure of twisted bilayer graphene changes significantly even by a tiny twist. When bilayer graphene is twisted at special “magic angles”, flat bands appear. We examined how these flat bands are created, their properties and the relevance to some unconventional physical property such as superconductivity. We conclude that in the nanoscopic scale, similar looking atomic structures can create vastly different electronic structures. Like how P. W. Anderson stated that similar looking fields in science can have differences in his article “More is Different”, similar moiré patterns in twisted bilayer graphene can produce different electronic structures.
De bestrijding van het coronavirus in de eerste fase van de crisisbestrijding
Authors: Becker R.G. , Geertjes G.J.A.
Published: July 2021

De bestrijding van het coronavirus in de eerste fase van de crisisbestrijding. Over de rol van het Veiligheidsberaad als overleggend en beslissend orgaan

In de periode tussen 12 maart en 1 december 2020 hadden de 25 veiligheidsregio’s een sleutelrol bij de bestrijding van het coronavirus. Zij volgden de bindende aanwijzingen van de Minister van VWS op en hadden daarnaast de bevoegdheid om eigen maatregelen voor hun regio te nemen. Dankzij het afstemmingsoverleg tussen de veiligheidsregio’s in het Veiligheidsberaad is in de corona-aanpak niettemin steeds een grote mate van uniformiteit zichtbaar geweest. In deze bijdrage komt aan de orde hoe beperkt de ruimte voor een gedifferentieerde corona-aanpak in de afgelopen maanden is geweest en waarom de betrokkenheid van de veiligheidsregio’s bij de coronabestrijding achteraf gezien als een gelukkige greep kan worden beschouwd.
Covidiaans wetgeven in den vreemde
Authors: van Oort S.P.
Published: July 2021

Covidiaans wetgeven in den vreemde. De eerste golf coronamaatregelen in Duitsland, Frankrijk en het Verenigd Koninkrijk vanuit wetgevingsperspectief

Vanuit wetgevingsperspectief bespreek ik de regelgevende maatregelen die ter bestrijding van de coronapandemie zijn genomen tussen 12 maart en 1 juli 2020 in Duitsland, Frankrijk en het Verenigd Koninkrijk. Per land bespreek ik zaken als het staatsnoodrecht, de bevoegdheidsverdeling tussen overheden en parlementaire betrokkenheid. De conclusie is dat elk land opereerde binnen de bestaande kaders van de publieke gezondheidswetgeving en met vaak staatsnoodrechtelijke vormen. De état d’urgence sanitaire en de epidemischen Lage von nationaler Tragweite doen daarbij de vraag rijzen of zulke op de aard van de crisis toegespitste rechtstoestanden geen plaats verdienen in het te moderniseren Nederlandse staatsnoodrecht.
Hardheidsclausules
Authors: Nap M.
Published: July 2021

Hardheidsclausules

De Tweede Kamer heeft bij herhaling en met algemene stemmen opgeroepen tot het gebruik van hardheidsclausules in wetgeving. In deze aflevering van ‘Legisprudentie’ wordt nagegaan hoe de Raad van State over zulke clausules denkt.
Comparison of closed incision negative pressure wound therapy with conventional dressing for reducing wound complications in emergency laparotomy
Authors: Garg Arun , Jayant Sneh , Gupta Arun Kumar , Bansal Lalit Kumar , Wani Abid , Chaudhary Poras
Published: July 2021

Objective:
The aim of this study was to compare the post-operative effects of closed incision negative pressure wound therapy with conventional dressing in emergency laparotomy.
Methods:
This study was conducted from 1st November 2018 to 31st March 2020 in ABVIMS & Dr. R.M.L. Hospital, New Delhi. The potential candidates for the study were patients of 18 years and above who were admitted in surgical emergency and underwent emergency laparotomy by a midline incision. Fifty random patients were alternatively allotted to group A (25 patients) and group B (25 patients). In the patients of group A, closed incision negative pressure wound therapy (ciNPWT) was applied on midline closed wound after an exploratory laparotomy procedure. The patients in group B, standard dry gauze dressing was done.
Results:
The mean age of patients in group A and group B were 46.76±12.20 and 41.96±8.33 years, respectively (p-value-0.11). The wound infection was present in 12% of cases in group A and 32% in group B, but when we calculate the p-value, it was found to be statistically non-significant (p-value-0.08). Similarly, seroma formation and wound dehiscence were found less in group A as compared to group B but not reached up to a statistically significant limit (p-value 0.55 and 0.38 respectively). The frequency of dressing change was 1-2 per week in 92% of cases in group A while it was 3-4 per week in 68% of cases in group B. The mean time of the frequency of dressing change was 1.24±0.72 per week and 4.28±1.90 per week in both the groups respectively (p-value <0.001). There was no significant (p>0.05) difference in the duration of hospital stay between group A (mean hospital stay 8.20±2.34 days) and group B (mean hospital stay 8.21±3.37 days).
Conclusion:
Closed incision negative pressure wound therapy has no advantages over conventional dressing in terms of post-operative complications and hospital stay. However, it reduces the frequency of dressing change significantly, which reduces the mental stress of the patient and the burden of changing daily dressing.
A MULTIPLICAÇÃO E O ENSINO: UM ESTUDO A PARTIR DAS PROPOSIÇÕES DE DAVYDOV
Authors: Gil Maria Luiza Evangelista , Arrais Luciana Figueiredo Lacanallo
Published: July 2021

The objective of this article to discuss the process of teaching multiplication, having as principles the assumptions of the Historical-Cultural Theory -THC. Mathematics is present in our daily life and allows us tocommunicate, solve problems and promote social relations. This proves the importance and need for the appropriation of the concepts involved in the aritmetic operations is essential, especially multiplication. Therefore, through a bibliographical research, studies were made on Vygostki, Davydov, Moura Rosa, Galdino and other contemporary authors linked to this same perspective, the search for understanding principles that help us teach multiplication in the early years of schooling. We found that teaching needs to go beyond empirical aspects towards the development of theoretical thinking, being indispensable the execution of tasks and actions that make the student enter into study activity and understand the concept. The research shows that the theme needsmore investigated in order to have more propositions and referrals to ensure the learning of the multiplicative concept.
FORMAÇÃO EM PSICOLOGIA CLÍNICA NO CONTEXTO PANDÊMICO: POSSIBILIDADES DA EXTENSÃO POR MEIO DE UM GRUPO DE ESTUDOS
Authors: Sapateiro Mariana  Rodrigues , Silva Ana  Carolina  de  Moraes , Gouveia Eloisa  Carlucci , Inácio Amanda  Lays Monteiro , Sei Maíra Bonafé
Published: July 2021

The objective of the present study was to describe the realization of the study group aimed at training in clinical psychology during the COVID-19 pandemic and to analyze its contributions to the theoretical and practical improvement of the members. This is an experience report of the activities developed between the months of april to december 2020 in a group offered through an extension project of a public university in the interior of Paraná. In total, 28 meetings were held, with about 7 participants. The materials inherent to group discussions will be portrayed and discussed in the light of the scientific literature and the perceptions of three students who were part of the group, through the systematizationof three theoretical axes: (1) Specificities of the Psychology School Service and its contributions to practice professional; (2) Medicalization and Psychoanalysis; (3) Psychoanalysis with children and adolescents: the theories of Melanie Klein, Donald Winnicott, Anna Freud and Françoise Dolto. The analysis of the discussions showed that the potential of the group referred not only to the development of theoretical knowledge, given that the group had a plurality of knowledge, but also to the deepening of that knowledge and exchange of experiences, which, in a context of uncertainties and difficulties, also made it possible to accommodate the evidenced demands.
UMA REFLEXÃO CRÍTICA SOBRE O INÍCIO DA FORMAÇÃO DOCENTE EM EDUCAÇÃO FÍSICA
Authors: Carvalho Anderson dos Santos , Vilela Junior Guanis de Barros , Abdalla Pedro Pugliesi , Silva Nandhara Gabriela Ferreira da , Lacerda Mariana Pardinho , Mantovani Aline Madia , Garcia Júnior Jair Rodrigues
Published: July 2021

The purpose of this study was to understand the teaching formation in Physical Education and its different aspects developed during initial training.Method:a bibliographical survey ofbooks andcientificarticles was carried out. For this,thekeywords“Teacher training”, “professionaltraining” and “physical education”, were used exclusively in Portuguese language.The focus of the bibliographic research was the survey of authors who discuss the thematic of teacher education in Physical Education. Results:It was identified that teaching formal higher education aims to ensure the training of teachers to work in the environment social so that they can assist students in developing their intellectual ability. Thus, training in Physical Education has the duty to subsidize theoretical and practical content to future teachers for transformative teaching during the educational process.The focus aspects during initial training are “the relationship between theory and practice "," the role of self-assessment in the teaching construct ","constant update", "beginning and path of teaching","convergence between technical and applied training". Conclusion:It is necessary during teacher training to develop an understanding of the future teachers values, such as feelings, emotions, the desire to overcome insecurity. That is, It is necessary to stimulatecritical reflection on the practice of the future physical education teacher. it is necessary to encourage the teacher to think critically to better develop the educational process.
Comparison of High-performance Computing Approaches in the Python Environment for a Five-point Stencil Test Problem
Authors: Miranda Eduardo F. , Stephany Stephan
Published: July 2021

Several of the most important high-performance computing approaches available in the Python programming environment of the LNCC Santos Dumont supercomputer, are compared using a specific test problem. Python includes specific libraries, implementations, development tools, documentation, optimization and parallelization resources. It provides a straightforward way to program using a high level of abstraction, but the parallelization features for exploring multiple cores, processors, or accelerators such as GPUs, are diverse and may not be easily chosen by the user. Serial and parallel implementations of a test problem in Fortran 90 are taken as benchmarks to compare performance. This work is a primer for the use of HPC resources in Python.