Kesan Penglitupan Kuratif Ke Atas Sifat-Sifat Tensil Filem Lateks Getah Asli

Kajian dijalankan dengan menggunakan kaedah penglitupan kuratif untuk menghasilkan filem lateks yang tersambung silang. Melalui kaedah ini filem tersambung silang disediakan dengan merendam filem tersebut di dalam takungan kuratif dan diikuti dengan pengeringan. Sebatian lateks GA disediakan berasingan dengan bahan-bahan dispersi kuratif. Sebatian lateks GA hanya dicampur dengan anti oksidan sahaja dan filem yang terhasil dengan kaedah pencelupan berkoagulan kering kemudian direndam ke dalam sebatian kuratif untuk proses sambung silang. Kesan parameter rendaman (masa dan suhu) serta parameter pengeringan (masa dan suhu) terhadap sifat-sifat filem yang terhasil telah dikaji

TRANSLATION ENGLISH-INDONESIA: LEARNING DEVELOPMENT BASED HYBRID LEARNING IN POST-PANDEMIC ERA FOR EFL STUDENTS

This study aims to describe the development of a Hybrid learning model in Translation: English-Indonesian learning for UINSU English Tadris students. researchers use the Borg and Gall model through ten steps. 30 research subjects were taken from the UINSU English Tadris study program population. Data were collected by observation techniques, questionnaires, and tests. Data analysis techniques use percentages, mean, and t-tests. The results of the validation research from experts I and II on the design of the hybrid learning model were an average of 4.34 in the very good category. Field test results I; average paratest 6.17 and posttest 6.60. Field test II average parates 6.63 and posttest 7.65. Field test III average paratest 6.72 and posttest 7. 69. Different test results through t-test on learning motivation t-count 9.254, student creativity 9.796, and learning outcomes 9.840 and it turns out that t-count> t-table 2.136 is proven there is a significant difference before using the model and after using the hybrid learning model. The conclusion of the study is that the hybrid learning model developed in this study is effectively used in Translation: English-Indonesian learning for UINSU English Tadris Program students

Duolingo Application in English Teaching Practice: Teacher’s Perception

Unique learning media will produce good learning. Unique in this case means a teacher who creates a fun and innovative learning atmosphere. So that the process of learning English in class inspires them to keep going. Duolingo is a gamified software for language learning. The heavy-duty of this popular language learning software, incentive benefits, logical levels, and user ratings based on success are just a few examples of aspects that demonstrate the strong elements of gamification. As an outcome, a teacher must utilize creative and innovative learning media. Many English teachers struggle with designing and implementing English learning media that piques students’ interest in learning English. As a result, the research focuses on introducing and developing the effectiveness of using duolingo application in English learning for students. This research utilizes a qualitative descriptive design to evaluate how English teachers perceive the Duolingo application in learning English in the classroom. The participants in this study were 15 English teachers from various schools in Medan City. The finding showed that the teacher’s perception of the Duolingo application was very influential and effective while using in the classroom to learn English. Keywords: duolingo, teacher’s perception, English learnin

Pengaruh menghafal Al-Qur’an terhadap kepribadian anak asuh di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola

Penelitian ini membahas tentang pengaruh menghafal al-Qur’an terhadap kepribadian anak asuh di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola. Penelitian ini dilatarbelakangi bahwa proses belajar dapat memengaruhi kepribadian dengan menerapkan beberapa kegiatan keagamaan dalam membentuk kepribadian anak asuh salah satunya dengan menghafal al-Qur’an. Adapun rumusan masalah penelitian ini adalah bagaimana menghafal al-Qur’an, Bagaimana kepribadian anak asuh, dan seberapa besar pengaruh menghafal al-Qur’an terhadap kepribadian anak asuh di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola. Jenis penelitian ini adalah penelitian kuantitatif,dan menggunakan metode statistik dan deskriptif,sedangkan instrumennnya angket.Sampel dalam penelitian ini adalah 31 anak asuh.Kemudian data yang diperoleh diolah dan dianalisis dengan rumus korelasi Product Moment. Hasil penelitian ini menunjukkan bahwa hasil perhitungan yang diperoleh menghafal al-Qur’an di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola termasuk dalam kategori sangat baik sekali yaitu dengan persentase 81,40% dan kepribadian anak asuh termasuk dalam kategori baik, yaitu dengan persentase 76,74%.Sedangkan pengaruh menghafal al-Qur’an terhadap kepribadian anak asuh di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola memiliki korelasi, hal ini ditunjukkan dengan besarnya koefisien korelasi penelitian rxy sebesar 0,453> rtabel sebesar 0,355. Untuk mengujitingkat signifikan digunakan uji F.Maka terdapat pengaruh yang signifikan antara menghafal al-Qur’an terhadap kepribadian anak asuh di Panti Asuhan Maimun Babussalam Basilam Baru Desa Hutatonga Kecamatan Batang Angkola. Hal ini dibuktikan berdasarkan data F tabel yang diperoleh dari hasil perhitungan pada taraf signifikansi 5% bahwa F hitung(7,48) lebih besar dariF tabel(4,18)maka Ho ditolak dan Ha diterima. Maka dapat disimpulkan bahwa semakin baik seseorang dalam menghafal al-Qur’an maka akan semakin baik pula kepribadian dari seseorang tersebut

BUTTERFLY DIVERSITY IN THE FOREST OF BUKUM VILLAGE SIBOLANGIT DISTRICT DELI SERDANG REGENCY NORTH SUMATRA

ABSTRAK Kupu-kupu adalah serangga yang aktif di siang hari yang memiliki peranan penting sebagai polinator pada suatu ekosistem dan bioindikator pada suatu lingkungan. Penelitian dilakukan untuk mengetahui diversitas jenis, kemerataan jenis, dan kelimpahan relatif jenis kupu-kupu di Hutan Desa Bukum Kecamatan Sibolangit Kabupaten Deli Serdang Sumatera Utara. Penelitian ini bersifat survey eksploratif dengan metode jelajah dan metode VES. Pengambilan sampel menggunakan jaring serangga, di pagi hari pukul 08.00-10.00 WIB dan sore hari 14.00-16.00 WIB. Terdapat 39 jenis kupu-kupu dari 6 famili dengan 473 individu. Indeks diversitas jenis kupu-kupu di Hutan Desa Bukum memiliki nilai rata-rata yaitu 2,93 yang termasuk dalam kategori sedang. Indeks kemerataan jenis kupu-kupu di Hutan Desa Bukum memiliki nilai rata-rata yaitu 0,79 yang termasuk dalam kategori tinggi. Indeks kelimpahan relatif jenis kupu-kupu di Hutan Desa Bukum yaitu jenis kupu-kupu Ypthima baldus dengan nilai rata-rata kelimpahan 18,60%. Berdasarkan analisis indeks diversitas, indeks kemerataan, dan indeks kelimpahan relatif jenis menunjukkan bahwa faktor abiotik atau kondisi lingkungan di Hutan Desa Bukum sesuai dengan siklus hidupnya kupu-kupu. Kata Kunci: Diversitas, Hutan Desa Bukum, Kemerataan, Kelimpahan relatif, Kupu-Kupu ABSTRACT Butterflies are insects who active in the day that have an important role as pollinators in an ecosystem and bioindicators in an environment. The study was conducted to determine species diversity, species evenness, and relative abundance of butterfly species in the Forest of Bukum Village Sibolangit District Deli Serdang Regency North Sumatra. This research is an exploratory survey using the roaming method and the VES method. Sampling using insect nets, in the morning at 08.00-10.00 WIB and in the afternoon 14.00-16.00 WIB. There are 39 species of butterflies from 6 families with 473 individuals. The butterfly species diversity index in the Forest of Bukum Village has an average value of 2.93 which is included in the medium category. The evenness index of butterfly species in the Forest of Bukum Village has an average value of 0.79 which is included in the high category. The relative abundance index of butterfly species in the Forest of Bukum Village is the Ypthima baldus butterfly species with an average abundance value of 18.60%. Based on the analysis of the diversity index, evenness index, and relative abundance index of species, it shows that abiotic factors or environmental conditions in the Forest of Bukum Village are in accordance with the life cycle of the butterfly. Keywords: Diversity, Bukum Village Forest, Equality, Relative Abundance, ButterflyABSTRAK Kupu-kupu adalah serangga yang aktif di siang hari yang memiliki peran penting sebagai polinator pada suatu ekosistem dan bioindikator pada suatu lingkungan. Penelitian dilakukan untuk mengetahui diversitas jenis, kemerataan jenis, dan perahu relatif jenis kupu-kupu di Hutan Desa Bukum Kecamatan Sibolangit Kabupaten Deli Serdang Sumatera Utara. Penelitian ini bersifat survey eksploratif dengan metode jelajah dan metode VES. Pengambilan sampel menggunakan jaring serangga, di pagi hari pukul 08.00-10.00 WIB dan sore hari 14.00-16.00 WIB. Terdapat 39 jenis kupu-kupu dari 6 famili dengan 473 individu. Indeks diversitas jenis kupu-kupu di Hutan Desa Bukum memiliki nilai rata-rata yaitu 2,93 yang termasuk dalam kategori sedang. Indeks kemerataan jenis kupu-kupu di Hutan Desa Bukum memiliki nilai rata-rata yaitu 0,79 yang termasuk dalam kategori tinggi. Indeks kelimpahan relatif jenis kupu-kupu di Hutan Desa Bukum yaitu jenis kupu-kupu Ypthima baldus dengan nilai rata-rata kelimpahan 18,60%. Berdasarkan analisis indeks diversitas, indeks kemerataan, dan indeks kelimpahan relatif jenis menunjukkan bahwa faktor abiotik atau kondisi lingkungan di Hutan Desa Bukum sesuai dengan siklus hidupnya kupu-kupu. Kata Kunci: Diversitas, Hutan Desa Bukum, Kemerataan, Kelimpahan relatif, Kupu-Kupu                                                                                                              ABSTRACT Butterflies are insects who active in the day that have an important role as pollinators in an ecosystem and bioindicators in an environment. The study was conducted to determine species diversity, species evenness, and relative abundance of butterfly species in the Forest of Bukum Village Sibolangit District Deli Serdang Regency North Sumatra. This research is an exploratory survey using the roaming method and the VES method. Sampling using insect nets, in the morning at 08.00-10.00 WIB and in the afternoon 14.00-16.00 WIB. There are 39 species of butterflies from 6 families with 473 individuals. The butterfly species diversity index in the Forest of Bukum Village has an average value of 2.93 which is included in the medium category. The evenness index of butterfly species in the Forest of Bukum Village has an average value of 0.79 which is included in the high category. The relative abundance index of butterfly species in the Forest of Bukum Village is the Ypthima baldus butterfly species with an average abundance value of 18.60%. Based on the analysis of the diversity index, evenness index, and relative abundance index of species, it shows that abiotic factors or environmental conditions in the Forest of Bukum Village are in accordance with the life cycle of the butterfly. Keywords: Diversity, Bukum Village Forest, Equality, Relative Abundance, Butterfly  

PENGARUH SUHU VULKANISASI DAN KOMPOSISI BENTONITE CLAY YANG DIMODIFIKASI DENGAN ALKANOLAMIDA DARI BAHAN BAKU RBDPKO PADA PRODUK LATEKS KARET ALAM

The is research aims to determine the effect of vulcanization temperature and composition of bentonite clay as good filler on mechanical properties of natural rubber latex product. In this study, we use bentonite clay as filler and alkanolamide as compatibilizer. The material used in this study are high ammonia latex 60%, curative agents such as sulfur, ZnO, ZDEC, AO, KOH, bentonite clay and alkanolamide. Alkanolamide is synthesized from amidation reaction between Refined Bleached Deodorized Palm Kernel Oil and diethanolamine. The methodology includes pre-vulcanizing natural rubber latex with certain formulation, then vulcanized using dipping method. The variable used in this study is filler loading, from 5, 10, 15, 20, and 25 gram, and vulcanization time 10 minutes.  The products were then tested in order to observe its mechanical properties, FTIR characterization, SEM characterization and crosslink density. The results show that the synthesized alkanolamide possess the functional group desired. Alkanolamide modified bentonite clay loading is capable of increasing crosslink density and mechanical properties of the products. Optimum filler loading is reported on 10 gram and optimum vulcanization at 120oC

PENGARUH BIODEGRADASI DENGAN TEKNIK PENANAMAN TERHADAP PRODUK LATEKS KARET ALAM BERPENGISI TEPUNG KULIT PISANG YANG DIPUTIHKAN DENGAN HIDROGEN PEROKSIDA

Natural rubber latex products filled with bleached banana skin powder were identified by burying samples in soil. Soil burial was carried out by adding NPK fertilizer and without fertilizer. One of the tests which was carried out was weight loss calculation. Weight loss calculation showed that natural rubber latex products filled with bleached banana skin powder biodegraded faster than natural rubber latex products without filler. The addition of fertilizer also contributed to biodegradability of samples. The other test was FTIR (Fourier Transform Infrared Spectroscopy) test. The results of FTIR test showed there were structure changes in natural rubber latex which indicated natural rubber latex had been biodegraded

KARAKTERISASI POLIMER KONDUKTIF POLIPIROL BERPENGISI SERBUK BAN UNTUK MENDETEKSI KONDUKTIVITAS MINYAK

Conductive polymer sensor based polypyrrole (ppy) and tire dust and 1,4-methyl-pyrrolidinone was made by using polymerization process. The polymerization process was prepared at temperature 100°C in boiling water for 30 minutes. Conductive polymer sensor is undergone several type of analysis including electrical conductivity, Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR),and X-Ray Diffraction (XRD). The test used some kind of oil (palm oil,corn oil, diesel, and engine oil). The conductivity test result shows that sensor-4 (contain 20 phr of tire dust) in 80°C at 30 minutes had the highest conductivity. Scanning Electron Microscopy result shows the rough surface and well dispersed of tire dust in polypyrrole/tire dust blends. The XRD analysis shows the Face Centered Cubic (FCC) crystallographic structure of the sensor. The oil conductivity test shows that the corn oil is more reactive than others

PENGARUH PENCUACAAN ALAMI TERHADAP PRODUK LATEKS KARET ALAM BERPENGISI TEPUNG KULIT PISANG YANG DIPUTIHKAN DENGAN HIDROGEN PEROKSIDA

The effect of exposing bleached banana skin powder-filled natural rubber products to sun light and weather with variation of bleached banana skin powder filler loading. Banana skin powder was dried and bleached with hydrogen peroxide and made into disperse system. Natural rubber latex was compounded with bleached banana skin powder with filler loading of 0 to 20 phr (per hundred rubber). Natural rubber latex products, which were produced, were hung in air and exposed to sun light and weather. The degradation of bleached banana skin powder-filled natural rubber products were evaluated by calculating weight loss of samples and performing Fourier transform infrared spectroscopy (FTIR) test. Natural rubber latex lost weight after exposure to sun light and weather from 1 to 16 weeks due to photo-oxidation process

CHARACTER BUILDING TERHADAP BUDI PEKERTI ANAK DI DESA PRAPAT JANJI KEC. BUNTU PANE

Character building merupakan hal yang sangat dibutuhkan pada masa saat ini. Characterbuilding juga dianggap sebagai jalan menuju kesuksesan seseorang dalam menjalin kehidupanbermasyarakat dan bekerja. Pada artikel ini penulis melakukan kegiatan pengabdian padamasyarakat dengan mengunakan pendekatan qualitative desain. Dalam pengumpulan datayang dilakukan adalah menggunakan instrumen interview dan diskusi terhadap permasalahanyang alami oleh masyarakat Desa Prapat Janji Kec. Buntu Pane Kab. Asahan. Berdasakankegiatan yang dilakukan ditemukan beberapa hal yaitu tingginya kriminalitas sikap dan prilakuanak remaja, prilaku dan sikap tersebut dipengaruhi oleh teknologi, kurangnya komunikasiantar anggota keluarga dan masyarakat, dan sifat cuek menjadi sikap dan tindakan yangdominan di antara keluarga dan masyarakat