bluuebunny/crossref_metadata_2025 huggingface dataset:
Korean Celebrity Brand Ambassador as a Strategy to Increase Sales of PT. Shopee Indonesia (Study: “Gfriend” In Shopee 11.11 Big Sale)
Authors: Pratami Rezki , Sari Afrina
Published: January 2021

This article examines PT. Shopee Indonesia's strategy in increasing sales with Korean celebrity brand ambassadors. Theory used is the integrated marketing communication theory by Kotler & Armstrong (2008) and brand ambassador concept owned by Rossita & Percy (2005). Data analysis is with observation, documentation and interviews of 4 informants by applying case study methods. The results showed choosing GFRIEND as the brand ambassador of Shopee 11.11 Big Sale campaign resulted in the sale of 70 million items sold on November 11, 2019, and sales tripled in the first hour compared to 2018. By running four of eight integrated marketing communication models by Kotler & Armstrong (2008) such as sales promotion, advertising, interactive marketing, and also events and experiences conducted through both mass media, online media, and social media resulted in a third quarter achievement of 2019 PT. Shopee Indonesia increased by 261,1% or equivalent to 257,2 million dollars, as well as Gross Merchandising Value (GMV) of 69,9% or equivalent to 4,6 billion dollars compared to 2018. This means that making GFRIEND as a brand ambassador Shopee 11.11 Big Sales is the right strategy and successfully brings PT. Shopee Indonesia to a significant increase in sales.
HIJRAHTAINMENT: COMPOSING PIETY AND PROFANE AS COMMODIFICATION OF RELIGION BY MEDIA
Authors: Kusumalestari Ratri Rizki
Published: January 2021

According to the constructionism paradigm in communication and media theory, social reality is constructed by the media based on its ideology. The media construct various realities in the real world into a second reality. One of them is the rise of artists who explore Islam and decide to "emigrate" or “hijrah.” Using the Murray Edelman framing method, this study explores how online media okezone.com, detik.com, and tribunnews.com frame the hijrah phenomenon of  Indonesian artists in entertainment packages and bring up the term hijrahtainment. The results of this study show that the media construct two frames, namely the ideal millennial frame and the piety and profane frame. The categorisation from the three online media offers religion commodification in the frame of piety, mixing with profanity like entertainment.
Instagram Activation as a part of University Public Relations Social Media Orchestration
Authors: Palapah Maya Amalia Oesman
Published: January 2021

The dissemination of information is carried out in various ways, one of them through Instagram. An Instagram account should not only be a visual performance but also a place for interaction with the public. This research aims to identify a combination of various aspects carried out in the @universitasislambandung account so that it can become an attractive presentation to create an orchestration that is pleasing to the public. The method used in this research is qualitative research. Data collection techniques were carried out by interview, observation and literature study. The results of this research indicate the initial stages of identifying aspects of social media activation in the form of engagement mode on the @universitasislambandung Instagram account with its unique users. The uniqueness can be seen from the combination of the thematic agenda with Unisba's vision and mission which is manifested in publications and interactions in the chat column, in the form of comments and direct messages. This research also produced a number of recommendations to optimize the performance of this Instagram account as a representation of the institutions on syle and delivery mode by utilizing additional features available on Instagram.
Revisi Terhadap Undang-Undang Nomor 13 Tahun 2003 Tentang Ketenagakerjaan Dalam Mengatasi Masalah Penyelesaian Perselisihan Berkaitan Perjanjian Kerja Bersama
Authors: Aruan Reytman
Published: January 2021

REVISI TERHADAP UNDANG-UNDANG NOMOR 13 TAHUN 2003 TENTANG KETENAGAKERJAAN DALAM MENGATASI MASALAH PENYELESAIAN PERSELISIHAN BERKAITAN PERJANJIAN KERJA BERSAMA
TINJAUAN HUKUM ISLAM TERHADAP FASILITATOR PERBUATAN ZINA
Authors: Badruzaman Dudi
Published: January 2021

ABSTRACTAdultery is now not just an individual act anymore, but has become an "industry" with localization both legal and illegal. In this case many actors are involved in it such as the presence of pimps, sex brokers, providers of places, delivery people, etc. They can be referred to as the facilitator of adultery / obscenity, in addition to the adulterer itself. The purpose of this study is to find out the views of jurisprudence fiqh towards facilitators of assault and sanctions for them. , this study shows that the facilitators of immoral acts are jarimah acts and are included in ta'zir jarimah's part. Judging from the concept of participation, the facilitator of obscene acts includes participating indirectly and depending on the case, can by way of agreement, inciting (ordering), or giving assistance. The sanction for the facilitator of this obscene act is the sanction of ta'zir, the light weight become state rights in accordance with the demands of benefit.Keywords: Islamic Law, facilitator, Zina.
BERAKHIRNYA PERJANJIAN PERSPEKTIF HUKUM ISLAM DAN HUKUM PERDATA
Authors: Wahidah Zumrotul
Published: January 2021

ABSTRACTAgreement is a law relationship which one binds one or more people that cause law consequence. The agreement would be carried out in accordance and it is appropriate by contract that was agreed upon Islamic law or civil law. Agreement of Islamic law are called sharia agreement that implementation systems embrace sharia principle. While agreements of civil law are called conventional agreement that the implementation systems embrace civil law. Every agreement would be raised the rights and obligation of each parties. If the agreement have been fulfiilled or not that caused by deviations. It results bot Islamic or civil law become extinct, it is appropriate with the agreement made by the parties. There is a difference at the end of the agreement in sharia and conventional, it provides a concept for interpreneurs in the field of economics at the sharia or conventional financial institutions which have developed rapidly at this time.Key Words: The End Of Agreement, Islamic Law, Civil Law.
GLOBALIZATION IN ISLAMIC EDUCATION (INTERNALIZATION STRATEGY OF LOCAL VALUES IN ISLAMIC EDUCATION IN THE ERA OF GLOBALIZATION)
Authors: Kaspullah Kaspullah , Suriadi Suriadi
Published: January 2021

Abstrak Artikel ini mambahas tentang Globalisasi Dalam Pendidikan Islam (Strategi Internalisasi Nilai-Nilai Kearifan Lokal dalam Pendidikan Islam Di Era Globalisasi). Penelitian ini bertujuan untuk mendeskripsikan internalisasi nilai kearifan lokal dalam pendidikan Islam. Adapun pendektan Penelitian ini menggunakan jenis penelitian kepustakaan (library research). Pendekatan penelitian adalah analisis teks dan informasi yang terkait dengan kajian. Penelitian ini difokuskan pada bagaimana proses internalisasi nilai kearifan lokal dalam pendidikan Islam. Hasil analisis menyimpulkan bahwa kearifan merupakan salah satu alternatif yang berupaya mempertahankan dan melestarikan nilai-nilai luhur budaya bangsa di dalamnya termasuk memperkuat pendidikan Islam. Strategi internalisasi kearifan lokal Indonesia dapat dilaksanakan melalui proses pembelajaran di sekolah. Hal tersebut dapat dilaksanakan melalui kegiatan pembelajaran. Salah satunya adalah mengintegrasikannya dengan pembelajaran pendidikan Islam. Dalam praktinya memerlukan sinergi dari tiga unsur utama dalam pendidikan. Unsur tersebut dapat dilakukan melalui tiga pilar pendidikan yakni pendidik an in formal, pendidikan formal, dan pendidikan non formal. Perlu juga dilakukan pemberdayaan tokoh masyarakat, tokoh adat, tokoh agama, tokoh pemuda serta para pembuat kebihjakan keteladanan dalam mempertahankan dan melestarikan nilai-nilai kearifan lokal dalam kehidupan sehari-hari. Kata Kunci: Globalisasi; Pendidikan; Strategi; Internalisasi; Nilai. Abstract This article is about Globalization in Islamic Education (Internalization of Local Wisdom Values Strategies in Islamic Education in the Era of Globalization). This study aims to describe the internalization of the value of local wisdom in Islamic education. The research approach uses this type of library research. The research approach is the analysis of text and information related to the study. This research is focused on how the process of internalizing the value of local wisdom in Islamic education. The results of the analysis concluded that wisdom is an alternative that seeks to maintain and preserve the noble values of the nation's culture in it including strengthening Islamic education. The strategy of internalizing Indonesian local wisdom can be implemented through the learning process at school. This can be implemented through learning activities. One of them is integrating it with Islamic education learning. In practice, it requires the synergy of three main elements in education. This element can be carried out through the three pillars of education namely in formal education, formal education, and non-formal education. It is also necessary to empower community leaders, traditional leaders, religious leaders, youth leaders as well as models of exemplary behavior in maintaining and preserving the values of local wisdom in daily life. Keywords: Globalization; Education; Strategy; Internalization; Values.
THE CORRELATION BETWEEN THE HABIT OF CARRYING OUT JAMAAH PRAYERS WITH THE DISCIPLINE ATTITUDE OF STUDENTS
Authors: Andriane Anne , Erhamwilda Erhamwilda
Published: January 2021

AbstractSalat is an obligation for every Muslim. Prayer in congregation is rewarded by Allah Almighty twenty seven times higher than prayer alone. With regular prayer in congregation one will get used to the discipline of managing time. This study aims to determine whether there is a correlation between the habits of students praying in congregation with the attitude of student discipline. The study was conducted with a quantitative approach, descriptive method, and the type of correlation research. This research was conducted on eighth grade students in one Islamic junior high school in the city of Bandung. The study population was 8th grade students totaling 294 students. Samples were taken with a random sampling technique of 114 students. Hypothesis testing is done by 5% error significance. Data collection research instruments include: Likert scale, questionnaires, documentation, interviews, and observations. Presentation of data uses frequency distribution, unit analysis, statistics, normality test, validity test, reliability test, correlation, and hypothesis test summary. The results of this study indicate that there is a significant positive correlation between the habit of carrying out congregational prayers with the discipline of students. It was concluded that to improve student discipline could be done by praying in congregation.Keywords: Habits, jamaah prayer, attitude of discipline Abstrak Shalat merupakan kewajiban bagi setiap Muslim. Sholat berjamaah diberi ganjaran pahala oleh Allah Swt dua puluh tujuh kali lebih tinggi dari sholat sendirian.  Dengan rutin sholat berjamaah seorang akan terbiasa dengan disiplin mengatur waktu. Penelitian ini bertujuan untuk mengetahui apakah terdapat korelasi  antara kebiasaan siswa sholat berjamaah dengan sikap disiplin siwa. Penelitian dilakukan dengan pendekatan kuantitatif, metoda deskriptif, dan jenis penelitiannya korelasi. Penelitian ini dilakukan pada siswa kelas VIII di salah satu SMP Islam di Kota Bandung. Populasi penelitian adalah siswa kelas 8 yang berjumlah 294 siswa, Sampel diambil dengan teknik random sampling sebanyak 114 siswa. Uji hipotesis dilakukan dengan signifikasi kesalahan 5%. Instrumen penelitian pengumpul data meliputi: skala likert, angket, dokumentasi, wawancara, dan observasi. Penyajian data menggunakan distribusi frekuensi, analisis unit, statistik, uji normalitas, uji validitas, uji reliabilitas, korelasi, dan ringkasan uji hipotesis. Hasil penelitian ini menunjukkan terdapat hubungan korelasi positif yang signifikan antara kebiasaan melaksanakan shalat berjamaah dengan sikap disiplin siswa. Disimpulkan untuk meningkatkan disiplin siswa dapat dilakukan dengan pembiasaan sholat berjamaah.Kata Kunci: Kebiasaan, Shalat Berjamaah, Sikap Disiplin.
THE CONCEPT OF MANAGEMENT OF LEARNING MKWU PAI BASED ON MULTICULTURAL COMPONENTS
Authors: Hermawan Iwan , Ruswandi Uus , Erihadiana Mohamad
Published: January 2021

AbstractMulticulturalism means cultural diversity or cultural heterogeneity. It is undeniable that students who enter tertiary institutions come from different regions with different ethnicities, different cultural cultures which can be one of the problems that interfere in the learning process. The naming of different people as mentioned by Allah in the Qur'an seems to be a commandment that must be completed by humans themselves using scientific knowledge. Multicultural Education is habituation or cultural education that provides opportunities for all students regardless of gender, social class, ethnicity, race, ethnicity, religion, and culture. In the Qur'an, several verses explain multiculturalism, including in the QS. Al-Hujurat: 13, Q.S. Ar-Rum: 22. The goals of multicultural education are basically in harmony with character education which leads to one goal, namely good behavior or moral values as the main goal of the Islamic religion is revealed on earth. As a reference in implementing multicultural education, a learning management concept is needed based on the components or important elements that exist in a system to process the achievement of expected goals, namely 1) Strengthening similarities rather than differences, 2) Mutual trust and mutual understanding, 3) Tolerance of differences, 4) Discussion is not imposing opinion.Keywords: Management, Learning, Component, Eduacation, multicultural.AbstrakMultikultural bermakna keragaman kultur atau heterogenitas kebudayaan. Tidak dapat dipungkiri bahwa mahasiswa yang masuk pada perguruan tinggi berasal dari berbagai daerah yang berbeda suku, berbeda kultur budayanya yang dapat menjadi salah satu permasalahan yang mengganggu dalam proses pembelajaran. Penamaan manusia yang berbeda-beda sebagaimana yang disebutkan Allah dalam Al-Qur’an seolah menjadi sebuah perintah yang harus diselesaikan oleh manusia itu sendiri dengan cara berilmu pengetahuan. Pendidikan Multikutural adalah pendidikan pembiasaan atau pembudayaan yang memberikan kesempatan pada semua  mahasiswanya tanpa memandang jenis kelamin, kelas sosial,  ras, suku, agama, dan budayanya. Dalam Al-Qur’an terdapat beberapa ayat yang menjelaskan tentang multikultural, antara lain terdapat dalam Q.S. Al-Hujurat: 13, Q.S. Ar-Rum: 22. Tujuan pendidikan multikultural ini pada dasarnya selaras pendidikan karakter yang bermuara pada satu tujuan yaitu pada perilaku yang baik atau akhlak karimah sebagaimana pokok tujuan agama Islam diturunkan dimuka bumi ini. Sebagai acuan dalam menerapkan pendidikan multikultural tersebut diperlukan sebuah konsep pengelolaan pembelajaran berdasarkan pada komponen-komponen atau unsur-unsur penting yang ada pada suatu sistem untuk memproses pencapaian tujuan yang diharapkan, yaitu 1) Memperkuat persamaan daripada perbedaan, 2) Saling percaya dan saling pengertian, 3) Toleransi terhadap perbedaan, 4) Berdiskusi bukan memaksakan pendapat.Kata Kunci: Pengelolaan, Pembelajaran, Komponen, Pendidikan, Multikultural
METHOD OF LEARNING PERSPECTIVE OF ALALA TANALUL 'ILMA BY IMAM AL-ZARNUJI
Authors: Busthomy Ahmad , Muhid Abdul
Published: January 2021

AbstractBefore Western experts introduced the method of learning to the world, in fact Islam already had its own method of learning for students. The learning method was written by a medieval Muslim intellectual named Imam al-Al-zarnuji in the book Alala. This paper aims at knowing the biography of Imam al-Al-zarnuji, the book of Alala and the learning methods offered. The writing method in this research uses library research by taking a variety of literature in accordance with the study. It produced three findings: First al-Al-zarnuji was one of the medieval Muslim intellectuals who had written systematic learning methods before Western experts introduced modern learning methods. Second, the Book of Alala is one of books that contains 37 nadhom, explains about learning methods which are entirely based on religious morals in order to be the good character people. Third, in al-Al-zarnuji’s opinion, if students want to be successful in getting the benefits of science, there are two things that must be done: (1) it should do the method correctly in taking knowledge; (2) should carry out the requirements in taking knowledge. By doing both of these things, students will get knowledge and get the benefits of the science that they wish.Keywords: Learning Method; Imam al-Zarnuji; Alala Book.   Abstrak Sebelum para pakar Barat memperkenalkan metode belajar kepada dunia secara luas, sebenarnya Islam sudah memiliki metode belajar sendiri untuk para pelajar. Metode belajar tersebut telah ditulis oleh salah satu intelektual Muslim abad pertengahan yang bernama Imam al-Al-zarnuji dalam kitab Alala Tanalul ‘Ilma. Tulisan ini bertujuan menelaah biografi Imam al-Al-zarnuji, kitab Alala dan metode belajar yang ditawarkan. Adapun metode penulisan dalam penelitian ini menggunakan riset perpustakaan dengan mengambil berbagai literatur yang sesuai dengan kajian. Tulisan ini menghasilkan tiga temuan, yaitu: Pertama, Imam al-Al-zarnuji merupakan salah satu intelektual Muslim abad pertengahan yang telah menulis metode belajar secara sistematis sebelum para pakar Barat memperkenalkan metode belajar modern. Kedua, Kitab Alala merupakan salah satu kitab yang berisi 37 nadhom, membicarakan tentang metode belajar yang secara keseluruhannya didasarkan pada moral religius agar menjadi manusia yang berkarakter baik. Ketiga, dalam pandangan Imam al-Al-zarnuji, apabila para pelajar ingin sukses mendapatkan manfaat dari ilmu pengetahuan, maka ada dua hal yang harus dilaksanakan, yaitu: (1) hendaknya melakukan dengan benar metode dalam menempuh ilmu pengetahuan; (2) hendaknya melaksanakan syarat-syarat dalam menempuh ilmu pengetahuan. Dengan melaksanakan kedua hal tersebut, maka para pelajar akan mendapatkan ilmu pengetahuan serta mendapatkan manfaat ilmu pengetahuan yang dicita-citakan. Kata Kunci: Metode Belajar; Imam al-Zarnuji; Kitab Alala.
PLANTING THE MORAL VALUES IN INTEGRATED ISLAMIC MIDDLE SCHOOL FITHRAH INSANI
Authors: Pamungkas Muhamad Imam , Kani Tiara Lidia
Published: January 2021

Moral is the most important part of the pillars of Islam besides monotheism (tawhid) and the Shari'a. These three aspects are used as the basis of implementation for adherents, both in the application in the family environment, work environment, community environment, even wider environment, namely nation and state. For that reason, of course it is very important for us to know the details related to this character. The focus of this research is on the application and inculcation of moral values in Integrated Islamic Middle School Fithrah Insani, which until now has two branches of education units. This research uses a descriptive-analytic method with qualitative case study type. This research uses primary and secondary data sources. Data collection techniques carried out by interview , observation, literature, and documentation. As a conclusion, it was found that inculcation of moral values in Integrated Islamic Middle School Fithrah Insani was implemented in the activities of Recitation of the Qur'an (TTQ), Mentoring / Character Building, MABIT / CAMP, Assigning Students to Learn and Look for Teachers to Teach Themselves Outside School, and Public Lecture .  Keywords: Moral Value, Akhlak, Integrated Islamic School, Fithrah Insani
LEARNING PROBLEMS OF ISLAMIC EDUCATION AT SMA LB OF REJANG LEBONG
Authors: Warsah Idi
Published: January 2021

AbstractChildren with disabilities have the same rights in terms of education, both general and Islamic religious education. The present study aimed to investigate the main learning problems of Islamic education subject for students with disabilities. This study was conducted at SMA LB of Rejang Lebong. This study applied a descriptive qualitative approach. The Islamic education teacher at this school was engaged as the subject. The data were collected using interview and observation techniques. The data were further analyzed using an interactive model whose elements included data collection, data condensation, data display, and conclusion drawing. This study revealed that there were three main problems in Islamic education learning found at SMA LB of Rejang Lebong. These problems included a lack of teaching staffs (teachers), lack of parental supports, and lack of training provisions for the Islamic education teacher in an effort to help the teacher provide ideal teaching and learning processes for students with special needs. The findings of this study call for immediate solutions to be offered, especially by the school per se and Rejang Lebong’s local government.Keywords: Problems; Islamic education learning; Students with disabilities Abstrak Anak penyandang disabilitas memiliki hak yang sama dalam hal pendidikan, baik pendidikan umum maupun pendidikan agama Islam. Penelitian ini bertujuan untuk mengetahui permasalahan pokok pembelajaran pendidikan Islam bagi siswa disabilitas. Penelitian ini dilakukan di SMA LB Rejang Lebong. Penelitian ini menggunakan pendekatan kualitatif deskriptif. Guru mate pelajaran pendidikan agama Islam di sekolah ini dilibatkan sebagai subjek penelitian. Pengumpulan data dilakukan dengan menggunakan teknik wawancara dan observasi. Selanjutnya, analisis data menggunakan model interaktif yang elemen-elemennya meliputi pengumpulan data, kondensasi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian ini mengungkapkan bahwa terdapat tiga masalah pokok dalam pembelajaran pendidikan agama Islam di SMA LB Rejang Lebong. Permasalahan tersebut antara lain adalah kurangnya tenaga pengajar (guru), kurangnya dukungan orang tua, dan kurangnya bekal pelatihan bagi guru pendidikan Islam dalam upaya membantu guru untuk memberikan proses belajar mengajar yang ideal bagi siswa berkebutuhan khusus. Temuan studi ini mengundang agar segea ada solusi yang ditawarkan terutama dari sekolah itu sendiri dan pemerintah daerah Rejang Lebong.Kata Kunci: Masalah, Pembelajaran pendidikan agama Islam; Siswa disabilitas
Effect of the Structural and Electronic Properties of Rh/CeXZr1-XO2 Catalysts on the Low-temperature Ethanol Steam-reforming
Authors: Olvera Olmedo Oscar Germán , Díaz de León Hernandez Jorge Noé , Suárez-Toriello Victor Alejandro , De los Reyes Heredia José Antonio
Published: January 2021

Abstract. Rh catalysts supported on CexZr1–xO2 (with x= 0-1) materials were synthesized by precipitation method. The influence of the two different cerium salt precursors, ammonium cerium(IV) nitrate and cerium(III) nitrate hexahydrate, over the structure and catalytic activity in steam reforming reaction was investigated. The synthesized catalysts were characterized by various techniques, such as N2 adsorption-desorption, temperature-programmed desorption, X-ray diffraction, Raman spectroscopy, diffuse reflectance UV-Vis, and X-ray photoelectron spectroscopy. The use of ammonium cerium (IV) nitrate as a cerium precursor resulted in solid CexZr1-xO2 solutions with improved oxygen mobility and specific surface area. The catalytic evaluation exhibited the support composition and structure impact on its activity and product yield. The Rh supported on Ce0.5Zr0.5O2 solid solution rendered the higher activity and H2 and CO2 yields among both series, related to improved oxygen mobility and greater Rh0 dispersion. The formation of surface defects adjacent to Rh clusters by strong metal-support interaction effect was suggested by Raman analysis. The close contact between the Rh0 site and oxygen vacancy could be favoring cyclic-like ethanol adsorption and favored the breaking of the C–C bond and further oxidation of adsorbed CO and CHX species.
 
Resumen. Los catalizadores de Rh soportados en materiales CexZr1 – xO2 (x= 0-1) se sintetizaron mediante el método de precipitación. En este trabajo se investiga la influencia de dos precursores de sal de cerio diferentes, nitrato de amonio cerio (IV) y nitrato de cerio (III) hexahidrato, sobre la estructura y la actividad catalítica en la reacción de reformado con vapor. Los catalizadores sintetizados se caracterizaron mediante diversas técnicas, tal como fisisorción de N2, reducción a temperatura programada, difracción de rayos X, espectroscopía Raman, reflectancia difusa UV-Vis y espectroscopía de fotoelectrones de rayos X. El uso de nitrato de amonio cerio (IV) como precursor de cerio dio como resultado la obtención de soluciones sólidas de CexZr1-xO2 con una movilidad del oxígeno y área específica mejorada. La evaluación catalítica mostró el impacto de la composición y estructura del soporte sobre la conversión y rendimiento de productos. El catalizador Rh soportado en la solución sólida Ce0.5Zr0.5O2 proporcionó la mayor actividad y rendimientos de H2 y CO2 entre ambas series, relacionados con la movilidad del oxígeno mejorada y mayor dispersión de Rh0. El análisis Raman sugirió la formación de defectos superficiales adyacentes a los grupos de Rh debido a fuertes interacciones metal-soporte. El contacto estrecho entre el sitio Rh0 y la vacante de oxígeno estaría favoreciendo la adsorción del etanol en configuración cíclica y favoreciendo la ruptura del enlace C-C y la oxidación de las especies de CO y CHX adsorbidas.
On the Structure-Activity Relationship for NO-SCR with NH3 Catalyzed by Cu-exchanged Natural Chabazite and SSZ-13
Authors: López-Curiel Julio C. , Hernández-Salgado Gabriela I. , Hernández-Terán Maria E. , Fuentes Gustavo A.
Published: January 2021

Abstract. In spite of their similar structures, the catalytic properties of natural and synthetic (SSZ-13) Chabazite during the selective reduction of NO with NH3 have a different dependence on the Cu exchange level when tested under conditions equivalent to those found in Diesel vehicles. At low (1-2 wt.%) and high copper loadings (6-14 wt.%), their activities differ, because there are variations in the different species of Cu (Cu+, Cu2+, Cu-O-Cu) detected by UV-Vis. At intermediate Cu loadings (2-3 wt.%) they have similar high activities, reaching 100 % conversion. High deNOx activity per Cu site appears to correlate with the predominance of charge compensation Cu2+ species over CuOx moieties. There are changes in the distribution of Cu moieties during operation of both catalysts, evidenced by DR-UV-Vis.
          
Resumen. A pesar de sus estructuras similares, las propiedades catalíticas de Chabazita natural y sintética (SSZ-13) durante la reducción selectiva de NO con NH3 dependen de manera diferente frente al nivel de intercambio con Cu cuando se prueban bajo condiciones equivalentes a las de vehículos Diesel. A bajos (1-2 % p/p) y altos contenidos de Cu (6-14 % p/p) la reducción de NO es diferente debido a variaciones en las distintas especies de Cu (Cu+, Cu2+, Cu-O-Cu) observadas por UV-Vis. Por su parte, los catalizadores intercambiados con 2-3 % p/p de Cu tuvieron alta actividad por sitio de Cu, alcanzando 100 % de conversión de NO, lo que parece deberse a la predominancia de especies de Cu2+ sobre especies CuOx de acuerdo con el análisis por DR-UV-Vis, el que también muestra la existencia de variaciones en la distribución de especies de Cu debido a la reacción.
Synthesis of Pt-Ni/CNT Cathodic Catalyst and its Application in a PEM fuel Cell
Authors: López-Rosas D. M. , Félix-Navarro R.M. , Flores-Hernández J. R. , Silva-Carrillo C. , Albarrán-Sánchez I. L. , Reynoso-Soto E. A.
Published: January 2021

Abstract. This work reports the synthesis, characterization, and catalytic activity of Pt-Ni/CNT with a low platinum load to use as cathode electrocatalyst in PEMFC (proton-exchange membrane fuel cells). The synthesis of nickel particles on the carbon nanotubes surface was carried out by chemical reduction of a Ni(ethylenediamine) complex; after that, the galvanic displacement reaction was performed to platinum deposition onto Ni/CNT. The Pt-Ni/CNT was deposited by spray technique on a gas diffuser layer (GDL) and subsequently subjected to several potential cycles to promote Ni atoms migration. Finally, its catalytic activity was evaluated in a fuel cell.
 
Resumen. En este trabajo, se reporta la síntesis, caracterización y evaluación catalítica del electrocatalizador Pt-Ni/CNT con bajo contenido de platino, empleado como electrocatalizador catódico en una celda de combustible tipo PEMFC (Celda de combustible de membrana de intercambio protónico). La síntesis de las partículas de níquel sobre la superficie de los nanotubos de carbono se llevó a cabo mediante la reducción química del complejo de Ni(etilendiamina) y posteriormente, se depositó platino sobre el material Ni/CNT mediante la reacción de desplazamiento galvánico. Se depositó una película de Pt-Ni/CNT sobre un difusor de gas mediante la técnica de esprayado y posteriormente fue sometido a diversos ciclos de potencial para promover la migración de los átomos de níquel y evaluar su actividad catalítica en una celda de combustible.
The Effect of Carboxymethyl Chitosan on Calcium Carbonate Precipitation in Synthetic Brines
Authors: Bolívar Genaro , Colina Marinela , Delgado Blas , Mendizabal Eduardo
Published: January 2021

Abstract. When oil production by natural flow of reservoirs decreases, it is necessary to increase the production by using improved recovery processes, such as water injection. Injection of incompatible water can cause the formation of saline deposits of calcium and magnesium carbonates. The use of chemical inhibitors to treat incrustations involves the use of chemicals with functional groups such as carboxylic acids (R-COOH) or phosphonates (R-PO32-). A new ecological scale inhibitor, carboxymethyl chitosan (CMC1), has been synthesized and its capacity to modify the CaCO3 crystalline phases obtained in the solid residue was compared with that obtained when using a commercial carboxymethyl chitosan (CMC2) and a commercial poly(acrylic acid). The results show that under the used conditions, the CMC´s produce a slightly larger amount of crystalline phases than the synthetic inhibitor. Using the X-ray powder diffraction technique, calcite, vaterite, and aragonite were identified in the residual solid. The ratio of these phases was modified by increasing the concentration of the inhibitor. Using Scanning Electron Microscopy (SEM), it was observed that increasing the concentration of the CMC's the modifies the crystal´s morphology from plates to spheres.
 
Resumen. Cuando la producción de petróleo por flujo natural disminuye, es necesario aumentar la producción de petróleo crudo y gas mediante procesos de recuperación mejorados. El agua es el líquido que se inyecta y puede provocar la formación de depósitos salinos de carbonato de calcio y magnesio. El uso de inhibidores químicos para el tratamiento de incrustaciones implica el empleo de productos químicos con grupos funcionales del tipo ácido carboxílico (R-COOH) o grupos fosfonatos (R-PO32-). Se sintetizó un nuevo inhibidor de incrustaciones ambientalmente amigable en base a carboximetilquitosano (CMC1), y se compararon las fases cristalinas de CaCO3 obtenidas en el residuo sólido con las obtenidas al utilizar un carboximetilquitosano comercial (CMC2) y un poli (ácido acrílico) comercial. Los resultados muestran que, en las condiciones utilizadas, las CMC producen una cantidad ligeramente mayor de fases cristalinas en comparación con el inhibidor sintético. Mediante la técnica de difracción de rayos X de polvos, en el sólido residual se identificaron las fases: Calcita, Vaterita y Aragonita. La relación de las fases se modificó aumentando la concentración del inhibidor. Mediante Microscopía Electrónica de Barrido (SEM) de los residuos sólidos, se observó que al aumentar la concentración de las CMC's la morfología de los cristales se modificaba de placas a esferas.
Penggunaan Aplikasi Zoom Cloud Meeting pada Mata Kuliah Mekanika dan Termostatistika saat Pandemi COVID-19
Authors:   Magister Pendidikan IPA, Universitas Mataram, Riyan Rizaldi Dedi , Fatimah Ziadatul ,   Magister Pendidikan IPA, Universitas Mataram
Published: January 2021

The purpose of writing this article is to explain the application of online based learning using the Zoom Cloud Mettng application during the COVID-19 pandemic. The writing of this article uses a qualitative method of literature review by collecting data in the form of secondary data obtained from various sources such as articles, notes, or other scientific sources. The data collected is then analyzed inductively. Based on the literature review, data analysis, and discussion, it can be concluded that the Zoom Cloud Metting application is an effective medium used in the learning process during the COVID-19 pandemic because it is able to facilitate educators and learning to be able to interact while continuing to prioritize health protocols during the pandemic COVID-19, namely Physical Distancing or maintaining distance.
Pengembangan Bahan Ajar (LKPD) Berbasis Problem Solving pada Materi Usaha dan Energi
Authors:   Prodi Pendidikan Fisika, FMIPA, Universitas Hamzanwadi, Fartina Fartina , Wajdi Badrul ,   Prodi Pendidikan Fisika, FMIPA, Universitas Hamzanwadi
Published: January 2021

This study aims to develop problem-solving based teaching materials (LKPD) with to business and energy materials. This type of research is development research / research and development. The development model used in this research is the 4D model, namely define, design, develop, and disseminate. Testing of problem solving-based student worksheet development products with a scientific approach is carried out through validation from material experts, media experts, subject matter teachers, and student questionnaire responses. The data technique used non-test (questionnaire and expert validation sheet). The technique of analyzing data from the distribution of questionnaires was carried out by tabulating the data from each validator, calculating the average score, and comparing the total score with a scale of five. Based on the results of 3 material experts, it shows that the quality of the LKPD is in the feasible category with a percentage value of 80%. Meanwhile, the results of 3 media experts show that the quality of LKPD is in the decent category with the proportion of the value of 77.15%. And based on the results of 2 subject teachers, it shows that the quality of the LKPD is in the decent category with a proportion of 82.5%. Meanwhile, the cost of student responses is in the very good category with an actual score of 78.4.
Pengaruh Model Problem Based Learning (PBL) Melalui Lesson Study Terhadap Kemampuan Berpikir Kritis Siswa
Authors:   Prodi Pendidikan Fisika, FMIPA, Universitas Hamzanwadi, Yunita Norma , Zahara Laxmi ,   Prodi Pendidikan Fisika, FMIPA, Universitas Hamzanwadi, Syahidi Khaerus ,   Prodi Pendidikan Fisika, FMIPA, Universitas Hamzanwadi
Published: January 2021

This study aimed at detemining the effect of Problem Based Learning Model on the ability of students’ critical thinking through lesson on the topic of effort and energy. The method of research was an experimental research by using post-test-one control group design. Experimental class was treated by problem based learning, while the control class was taught by conventional learning through lesson study. Population of this research was the high school at Al Hamzar, Tembeng Putik of the X grade which consisted of two classes. Those were X Mathematics and natural science 1 and X Mathematics and Natural Science 2 with the total number or students was 58. The sampling thechnique applied was saturated sampling technique. Then, the instrument used in the present research was essay test which contained 6 items. The test arrangement followed the indicators of critical thinking with a variety of possible answers. Having implemented both in the experimental and in the control class, there were improvements in learning process in tems of managing the time, the students and doing aperception. Testing hyphoteshis result by uisng t-test showed t-test = 1. 25 and t-table in signifance level was 5% was 0. 07, so t-test> t-table which meant the alternative hyphothesis (Ha) was accepted and null hyphothesis (Ho) was rejected , it could be concluded that problem based learning thorugh lesson study was significantly effective in students’ critical ability on the topic of effort and energy for the tenth garade students at Al Hamzar high school.
Pengaruh Penguasaan Matematika Terhadap Prestasi Belajar Siswa Pada Pokok Bahasan Kinematika Gerak
Authors:   Prodi Pendidikan Fisika, MIPA, Universitas Hamzanwadi, Hizbi Tsamarul , Wajdi Badrul ,   Prodi Pendidikan Fisika, MIPA, Universitas Hamzanwadi, Fartina Fartina ,   Prodi Pendidikan Fisika, MIPA, Universitas Hamzanwadi
Published: January 2021

This study aims to determine the effect of derivative and integral mastery on the learning achievement of physics class XI IPA students on motion kinematics material. The population of this study were all students of class XI IPA at Madrasah Aliyah NW Kotaraja, amounting to 36 people. The research method used is the Ex Post Facto method, by not providing treatment but directly conducting evaluations related to students 'abilities in motion kinematics material and also students' abilities related to inherited and integral abilities. The data analysis technique used is regression analysis. From the results of the analysis, it is found that Freg-count = 4.282 and Freg-table = 4.130 (Freg-count> Freg-table), the conclusion of this study is that the derivative and integral mastery affects students' physics learning achievement on the subject of motion kinematics.
The effect of teacher competence and motivation on performance through work satisfaction of teachers at Junior High School 7 Jakarta
Authors: Nani Suryani  , Guswandi  , Wachyudi
Published: January 2021

This study aims to analyze the effect of competence and motivation on job satisfaction, analyze the impact of competence and motivation on performance, analyze the effect of job satisfaction on performance, analyze the impact of competency on performance through job satisfaction and analyze the impact of motivation on performance through job satisfaction on teachers in State Junior High Schools 7 Jakarta. In research using a research design, the causality research design between variables and the research method also illustrates the relationship or influence between variables. Data collection techniques use two types of data collection, namely secondary data and primary data. The analysis technique used in this study uses Path Analysis. The results showed that the influence of competence and motivation on performance through satisfaction could not be intervening variables. The calculation results obtained indicate that each exogenous variable's direct effect is greater than the indirect effect on performance. These results suggest that satisfaction cannot play an intervening variable between competence and motivation on teachers' performance at Junior High School 7 Jakarta.
Lifestyles and health risks of university students
Authors: Guillermina Arenas  , Ariel Ramírez
Published: January 2021

Introduction: University life represents an important change in students' development; since they enter adulthood, in which they will deal with academic challenges and responsibilities; reducing considerably the time to carry out physical, recreational and/or cultural activities; favoring diseases related to overweight and obesity, because of sedentarism, potentializing the consumption of harmful substances as relaxation or anti-stress mechanisms. Objective: To analyze the variables in the consumption of tobacco, alcohol, physical and cultural activity in new students in the years 2016, 2017 and 2018. Materials and methods: Comparative, observational study with a descriptive scope. It was conducted by non-probabilistic sampling at convenience, in three generations, 2016, 2017 and 2018. The variables, alcohol consumption, tobacco consumption, frequency of physical activity and frequency of cultural activities were evaluated. Results and conclusions: Of the three generations evaluated, the one with the highest average for the four variables to be evaluated was 2017. The practice of cultural activities is the least performed in the three generations. The analysis of alcohol and tobacco consumption, as well as physical activity, is consistent with the data reported in ENSANUT 2016, 2018, and ENCODAT 2017.
An essay: John Locke’s views on education
Authors: Alma E. Nacua  , Bernadette L. Corsame  , Angelita L. Dela Cruz  , Noami D. Solano
Published: January 2021

Education means shaping according to each individual’s temperament and skills, exercised without brutality, but in a rigorous and pragmatic manner. The purpose of this essay is to explain Locke’s educational theory. Conclusion: Education of the people should have moral training, good breeding, Wisdom, useful knowledge.
Pattern of paediatric conditions seen in the children emergency room of an urban hospital in South-Eastern Nigeria
Authors: Patrick Uchenna Njoku  , Gabriel Uche Iloh  , Paul Owojionyi Dienye  , Francis Chukwuma Korie  , Vivien Chinagozie Ahaiwe
Published: January 2021

Background: Children Emergency Room (CHER) is a vital health care services point in many hospitals and can contribute beneficially in the evaluation of many hospitals ncluding tertiary ones. It enables many paediatric cases to be managed in the hospitals without being admitted into the paediatric wards with good outcomes. Material and Methods: This was a retrospective study involving review of records of all the children seen in the CHER between January 2012 and June 2012. The objectives were to look at the pattern and outcome of paediatric conditions in CHER with the aim of providing data for further evaluation and improvement. A proforma developed by the authors was used in collecting the relevant information from the patients’ records. The data collected was simply analyzed. Results: The total of 486 paediatric patients who satisfied the inclusion and exclusion criteria were seen in the CHER. Those less then one year of age constituted 58.6% of the patients. Majority (56.8%) of the patients were males. Also 52.9% of the patients lived in the rural areas. There was preponderance (96.7%) of medical conditions. Majority of both the males (78.6%) and females (72.4%) were discharged. Only 6.17% of the patients died while 15.6% were admitted into the wards. Conclusion: There was a preponderance of varieties of medical conditions in our environment with infections constituting the majority with resultant relative high mortality. Thus improvement in the uptake of the different childhood survival strategies including immunization and breast feeding will help in minimizing these problems.
Iko River Estuary: Anthropogenic impacts and the microbial community alterations
Authors: Augustine A Unimke  , Anthony A Ibiene  , Phillip O Okerentugba
Published: January 2021

The contamination of the aquatic systems with heavy metals has been on the increase since the last century due to industrial activities and this has contributed greatly to the variations in the microbial community structure and function in the ecosystem. The natural and anthropogenic variations in microbiological and heavy metals analysis in Iko River estuary was analyzed using standard methods. From the result, it was observes that anthropogenic variations influence greatly the microbial proliferation as significantly (p<0.05) higher microbial levels were observed across all microhabitats (tidal water, intertidal water and benthic sediment) as well as stations (upstream – Okoro, midstream – Kampa and downstream – Emeroke). It was observed that the sediment samples produced significantly (p<0.05) higher THB counts than tidal and intertidal water samples. Similar trends were observed for CUB, TF and CUF respectively. There was no significant difference (p>0.05) between the mean values of upstream, midstream and downstream. In all microhabitats and stations, the densities of crude oil-utilizing microorganisms were significantly (p<0.05) low compared to total heterotrophic counts. The total fungal counts were significantly (p<0.05) low compared to total heterotrophic bacteria counts. The result showed relatively higher concentrations of heavy metals in sediment than in tidal and intertidal water samples. The results indicate that the water and sediment samples show a remarkable variation in heavy metals and total petroleum hydrocarbon as a result of the great human activities in the estuary.
Concurrent analysis of ambroxol HCl and salbutamol sulphate from tablet formulation by RP-HPLC
Authors: Wrushali A. Panchale  , Neha A. Badukle  , Amar F. Sabhadinde  , Ravindra L. Bakal  , Jagdish V. Manwar
Published: January 2021

RP-HPLC method was developed for concurrent analysis of ambroxol HCl and salbutamol sulphate from tablet formulation. Analytes were separated with mobile phase consisting of mixture of methanol and water (0.1% triethylamine) in the ratio 50: 50 at a flow rate of 0.7 ml/min with Nucleosil (4.6 mm I.D x 250 mm) C18 column. The retention time of ambroxol HCl and salbutamol sulphate was found to be 3.61 and 6.20 min, respectively. The detection was carried out at 224 nm. The dynamic range for ambroxol HCl and salbutamol sulphate observed was 15-75 µg/ml and 1-5 µg/ml, respectively. The percent recovery obtained for ambroxol HCl and salbutamol sulphate were close to 100%. Obtained statistical data of results was found to satisfactorily.
Plant growth promotion effects of rhizopheric and endophytic bacteria on sugarcane cultivated on Acrisols of Tay Ninh province, Vietnam
Authors: Hoang Minh Tam  , Cao Ngoc Diep
Published: January 2021

Plant growth promotion of the best two strains: Serratia oryzae CT4b and Bacillus subtilis TPD3b together with chemical nitrogen and phosphorus fertilizers were continuously evaluated on sugarcane cultivated on Acrisols of Tay Ninh province, Vietnam in pots and field experiments. The experiments were arranged into a Split-Plot Design with four replications. The main plot factor was N-P fertilizer at five levels: without N-P, 25% N-P, 50% N-P, 75% N-P and 100% N-P for the pot experiment and at four levels: without N-P; 50% N-P; 75% N-P; and 100% N-P for the field experiment. The sub-plot factor was bacterial inoculation with 4 treatments: no bacteria; CT4bd; TPD3b; and mixture of both. Recommended amount of nitrogen and phosphorus fertilizers for sugarcane planted on Acrisols of Tay Ninh province were 200 kg N, 160 kg P2O5 in a hectare. The results showed that a combination of two bacteria had the highest plant growth stimulation potential. The mixture at rate of 75% N- P fertilizers produced sugarcane yield equal to that at level of 100% N-P fertilizer without bacteria in the pot experiment; increased sugar yield by 14.4%, equivalent to 1.02 ton / ha in the field trial and saved 25% of N-P fertilizer application. These two potential strains were proposed to be tested their ability to promote plant growth on many different sugarcane varieties in both plant-cane and ratoon crops in different material sugarcane areas of Tay Ninh province.