bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penerapan Strategi Pembelajaran TGT Dibandingkan dengan TSTS Dalam Meningkatkan Hasil Belajar Kimia Siswa
Authors: Harahap Doli Fadly , Prof. Dr. Suharta, M.Si Prof. Dr. Suharta, M.Si , Perangin Angin Predi S. , Rahmansyah Rian 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui perbedaan peningkatan hasil belajar kimia siswa yang diajarkan dengan Strategi Pembelajaran Two Stay Two Stray dibandingkan Teams Games Tournament dengan media Power Point, pada pokok bahasan Larutan Elektrolit dan Nonelektrolit. Populasi dalam penelitian ini adalah seluruh kelas X MAN 2 Model Medan, yang berjumlah11 kelas dan setiap kelas terdiri dari 36 siswa. Sampel dalam penelitian ini sebanyak 2 kelas yang diambil secara acak. Instrumen yang digunakan dalam penelitian ini adalah tes hasil belajar dalam bentuk pilihan berganda dengan jumlah soal sebanyak 22 soal yang telah dinyatakan valid dan reliabel serta lembar observasi tanggung jawab. Hasil penelitian menunjukkan bahwa Tidak terdapat perbedaan yang signifikan Hasil belajar siswa yang diajarkan dengan strategi pembelajaran TSTS dengan media Power Point dibandingkan siswa yang diajar dengan kooperatif tipe TGT dengan media Power Point (sig. 0,480 > 0,05).

This study aimed to determine the differences of the increase in student chemistry learning outcomes taught with the Two Stay Two Stray Learning Strategy compared to the Teams Games Tournament with PowerPoint media on Electrolyte and Nonelectrolyte Solutions subjects. The population in this study was all the first grade students in MAN 2 Medan with 11 classes and each class consisted of 36 students. The samples in this study were 2 classes taken randomly. The instrument used in this study was a test of learning outcomes in the form of multiple choices with 22 questions that have been declared valid and reliable as well as the observation sheet of responsibility. The results showed that there were no significant differences of student learning outcomes taught with TSTS learning strategies with PowerPoint media compared to students taugh with a cooperative TGT type with PowerPoint media (sig. 0.480> 0.05).
Kecerdasan Emosional Guru Kimia Madrasah Aliyah Swasta di Kota Medan
Authors: Fauziah Fauziah 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui sejauh mana Kecerdasan Emosional Guru Kimia Madrasah Aliyah Swasta (MAS) di Kota Medan. Penelitian ini merupakan penelitian kualitatif deskriptif. Data penelitian diperoleh melalui wawancara langsung terhadap responden. Indikator kecerdasan emosional yang dikaji adalah pengenalan diri, penguasaan diri, motivasi diri, empati, dan hubungan yang harmonis.Populasi dalam penelitian ini adalah seluruh guru kimia yang mengajar di MAS Medan yang berjumlah 5 orang dari 3 MAS yang ada (MAS Laboratorium, MAS Muhammadiyah 1, dan MAS YASPI). Hasil wawancara menunjukkan bahwa ratar-rata pengenalan diri sebesar 92% (sangat baik), penguasaan diri 90% (sangat baik), motivasi diri sebesar 85% (baik), empati sebesar 93% (sangat baik), dan hubungan yang harmonis 90% (sangat baik). Dengan demikian dapat disimpulkan bahwa kecerdasan emosional guru-guru kimia MAS di kota Medan berkategori baik.

This study aimed to determine the extent of Emotional Intelligence of Chemistry Teachers in Madrasah Aliyah (MAS) in Medan. This research was a descriptive qualitative study. Research data were obtained through direct interviews of respondents. The indicators of emotional intelligence studied were self-recognition, self-mastery, self-motivation, empathy, and harmonious relationships. The populations in this study were all chemistry teachers who taught in MAS Medan namely, 5 teachers from 3 different MASes (MAS Laboratory, MAS Muhammadiyah 1, and MAS YASPI). The results of the interview showed the average of 92% (very good) self-recognition, 90% (very good) self-mastery, 85% (good) self-motivation, 93% (very good) empathy, and 90% (very good) harmonious relationship. Thus, it could be concluded that the emotional intelligence of MAS chemistry teachers in Medan city was categorized as good.
Efektivitas Model Pembelajaran Learning Cycle Dalam Upaya Meningkatkan Hasil Belajar Kimia Siswa Pada Pokok Bahasan Kesetimbangan Kimia Melalui Pendekatan Penelitian Tindakan Kelas
Authors: Rizki Rohazmy , Nugraha Asep Wahyu , Erlina Erlina 
Published: May 2019

Tujuan dari penelitian ini adalah untuk mengetahui apakah hasil belajardan aktifitassiswa pada pokok bahasan kesetimbangan kimia yang diajar dengan Model Learning Cyclemelalui Pendekatan Penelitian Tindakan Kelas lebih baik dari sebelum diberi tindakan. Penelitian ini telah dilakukan di MAN 2 Model Medan. Populasi penelitian terdiri dari empat kelas dan secara acak diambil satu kelas sebagai sampel. Penelitian ini tidak membandingkan dua buah kelas, hanya melihat hasil awal sebelum diberi perlakuan dan sesudah diberi perlakuan. Penerapan model pembelajaran dilakukan dua siklus dengan observasi untuk mengetahui perubahan aktivitas siswa. Hasil penelitian menunjukkan model pembelajaran efektif digunakan sebagai model pembelajaran. Terdapat peningkatan hasil belajar siswa yang signifikan dari siklus I ke siklus II penerapan model pembelajaran. Hasil observasi menunjukkanminat siswa mendengarkan penjelasan guru, mengerjakan soal, mengajukan pertanyaan dan mencatatpada pokok bahasan kesetimbangan kimia meningkat.

The purpose of this study was to find out whether the learning outcomes and activities on the subject matter of chemical equilibrium taught by a Learning Model Cyclone through the Classroom Action Research were better. This research was conducted in MAN 2 Medan. The population consisted of four classes and one class was randomly taken as the sample. This study did not compare two classes, but it only found out the initial results before and after the application. The application of the learning model was conducted in two cycles with observations to determine changes in students activities. The results showed that the effective learning model was used as a learning model. There was an increase in students learning outcomes which were significant from cycle I to cycle II. The observation showed that the interest of students to listening to the teacher's explanation, working on the problem, asking questions and noting on the subject of chemical equilibrium increased.
Pemanfaatan Media Teka-Teki Silang (TTS) Untuk Meningkatkan Prestasi dan Kreativitas Siswa Pada Materi Klasifikasi Materi
Authors: Wartika Sri , Manalu Herbet C.B. 
Published: May 2019

Penelitian ini berupa penelitian tindakan yang bertujuan menerapkan penggunaan TTS sebagai media pembelajaran IPA untuk meningkatkan prestasi dan kreativitas siswa pada materi klasifikasi materi di kelas VII.Penelitian ini dilakukan dalam dua tahapan yang masing-masing tahapan terdiri dari satu kali pertemuan.Setiap tahapan terdiri dari siklus perencanaan (planning), tindakan (action),pengamatan (observation) dan refleksi(reflecting). Lokasi penelitian di laksanakan di SMP Negeri 3 Kecamatan Sunggal,Kabupaten Deli Serdang,sampel penelitian sebanyak 34 orang Siswa yang terdiri dari 17 0rang perempuan dan 17 orang laki-laki pada semester ganjil Tahun Ajaran 2016-2017.Teknik pengumpulan data dalam penelitian terdiri atas data kualitatif yang di dapat melalui pengamatan dan catatan di lapangan,serta data kuantitatif yang di dapat dari hasil belajar.Berdasarkan hasil penelitian disimpulkan bahwa penggunaan media TTS telah meningkatkan prestasi dan kreativitas Siswa pada materi klasifikasi materi di kelas VII.Berdasarkan hasil pengamatan pada tahap pertama di dapat ketuntasan belajar sebesar 60% dan pada tahap kedua didapat peningkatan hasil belajar sebesar 75%,sedangkan kreativitas pada tahap pertama 60% dan pada tahap kedua meningkat 85%.

This research is action research that has the aim of applying the use of cross puzzle (Teka Teki Silang) as a science learning media to improve student achievement and creativity in material classification lessons in class VII. This research was conducted in two stages, each of which consisted of one meeting. Each stage consisted of the cycle of planning, action, observation, and reflection. The location of the study was carried out in SMPN 3 Sunggal, Deli Serdang District. A sample of 34 students consisting of 17 students female students and 17 male students in the odd semester of the 2016-2017 Academic Year. The data used in this study consisted of qualitative data and quantitative data. Qualitative data is obtained through observation and recording. While quantitative data is derived from the results of learning. Based on the results of observations in the first stage, the percentage of learning completeness obtained was 60%. In the second stage, there was an increase in learning outcomes by 75%. For the creativity of students in the first stage reached 60%, and in the second stage increased by 85%.
Inovasi Problem Based Learning dengan Strategi Pembelajaran Genius Learning Menggunakan Media Peta Konsep
Authors: Berutu Arfiena Fitria , Sutiani Ani , Ayurosalia Angeline Viska , Wulandari Febiana 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar kimia, yang dibelajarkan menggunakan strategi pembelajaran Genius Learning dengan model pembelajaran PBL (problem based learning) pada pokok bahasan reaksi redoks. Populasi dalam penelitian ini adalah seluruh siswa kelas X SMA Dharma Pancasila Medan. Pengambilan sampel dilakukan secara purposif untuk mengambil kelas eksperimen I dan eksperimen II. kelas pertama sebagai Kelas eksperimen 1 yang diajarkan dengan menggunakan Genius Learning Strategi dengan model pembelajaran PBL, sementara kelas kedua sebagai kelas eksperimen 2 belajar menggunakan model pembelajaran PBL . Untuk mengukur kemampuan siswa digunakan metode tes hasil belajar yang disusun dalam bentuk tes objektif dengan jumlah soal sebanyak 20 soal yang telah dianalisis dan memenuhi syarat validitas isi. Sedangkan untuk mengukur kemampuan. Begitu ditarik kesimpulan ada perbedaan yang signifikan antara hasil belajar siswa yang dibelajarkan dengan menggunakan strategi pembelajaran jenius belajar dengan model pembelajaran PBL.

This study aims to determine the differences in learning outcomes of chemistry, which was delivered using the Genius Learning strategy with PBL (Problem Based Learning) model on the subject of redox reactions. The population in this study were all students of class X SMA Dharma Pancasila Medan. Sampling was done purposively to take an experimental class I and experimental class II. First class as experimental class I learned using Genius Learning Strategy with PBL learning model, while the second class as experimental class 2 learned using only PBL learning model. To measure students' abilities, the learning outcomes test method is arranged in the form of objective tests with several questions as many as 20 questions that have been analyzed and meet the requirements for content validity. The conclusion obtained is that there is a significant difference between the learning outcomes of students taught by using Genius Learning strategies compared to students taught using PBL learning models.
Efektivitas Pendekatan Saintifik Dengan Menggunakan Media Macromedia Flash Terhadap Hasil Belajar Peserta Didik
Authors: Hasibuan Dina Ananda , Silaban Ramlan , M Rona Rezky 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui keefektifan hasil belajar siswa melalui pendekatan saintifik dengan menggunakan media Macromedia Flash dan tanpa pendekatan saintifik dengan menggunakan media Macromedia Flash pada topik Hidrolisis Garam. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Negeri 11 Medan tahun ajaran 2015/2016. Sampel yang digunakan pada penelitian ini diambil secara purposif sampling. Yang terdiri dari dua kelas, yakni satu kelas sebagai kelas eksperimen 1 melalui pendekatan saintifik menggunakan Macromedia Flash dan satu kelas sebagai kelas eksperimen 2 tanpa pendekatan saintifik dengan menggunakan Macromedia Flash. Masing-masing kelas terdiri dari 40 siswa. Hasil belajar siswa melalui pendekatan saintifik dengan menggunakan media Macromedia Flash lebih tinggi daripada hasil belajar siswa tanpa pendekatan saintifik menggunakan Macromedia Flash.

The purpose of this study was to compare the effectiveness of student learning through the scientific approach using Macromedia Flash with students learning without using a scientific approach using Macromedia Flash on the topic of Salt Hydrolysis. The population in this study were all students of class XI Medan 11 High School 2015/2016 academic year. The sample used in this study was taken by purposive sampling. Which consists of two classes, namely one class as the experimental class 1 through the scientific approach using Macromedia Flash and one class as the experimental class 2 without a scientific approach using Macromedia Flash. Each class consists of 40 Conclusions obtained are that student learning outcomes through a scientific approach using Macromedia Flash is higher than student learning outcomes without a scientific approach using Macromedia Flash.
Corelation Between Sum of Precordial ST Depression in Acute Inferior Myocardial Infarction with Stenosis Severity of Left Anterior Descending Artery
Authors: Karo Kartika br , Ketaren Andre Pasha , Hasan Refli , Hasan Harris , Mukhtar Zulfikri , Lubis Anggia Chairuddin 
Published: May 2019

Background : There were many studies proved that precordial ST depression in Inferior STEMI show LAD disease from angiografi, but there were also many who unproved . Altought LAD disease was not the main cause of precordial ST depression in Inferior STEMI, but there were many patients with Inferior STEMI who had high grade LAD disease. Sum of precordial ST depression is one of ECG criteria that can help us to prove it . The aim of this study in to know if there is corelation between sum of precordial ST depression with LAD disease and the severity of LAD disease in Inferior STEMI patients with precordial ST depression .
Methods : We analized 60 patients inferior STEMI with precordial ST depression onset less than 24 hours that hospitalized in Haji Adam Malik General Hospital since December 2013-June 2017. Patients were divided in to 4 groups based on sum of precordial ST depression. Bivariate analysis were made to see the corelation between sum of precordial ST depression with LAD disease and severity of LAD, p value < 0.05 is statistically significant.
Result : Bivariate analysis show that there is strong corelation between sum of precordial ST depression with LAD disease (p=0.01). Sum of precordial ST depression also corelate with severity of LAD (p=0.01). There are also corelation with location of the lesion in proximal LAD and the complexity of the lesion but not statistically significant (p=0.233 and p=0.102). Analysis ROC curve sum of precordial ST depression to LAD disease give the cut off ≥5.15 mm with sensitivity 70% and spesificity 76.2%(AUC 0,752 ,95% CI: 0,620 – 0,883 p<0,001)
Conclusion : There is strong corelation between sum of precordial ST depression with high grade LAD disease. The more the sum of precordial ST depression the more posibility high degree LAD disease ( p=0.01).
Difference in Total Serum Immunoglobulin E Level Among Patients With and Without Intravenous Contrast Media Adverse Reaction on Computed Tomography Scan Examination
Authors: Ikhmawati Yulikha , Zubir Zuhrial , Daulay Elvita Rahmi 
Published: May 2019

The adverse reaction (AR) to intravenous contrast media (ICM) are relatively common. Various opinions pro-posed in the mechanism of the incidence of ICM AR. Suspected that the role of Immunoglobulin E (IgE) me-diates allergic conditions that are part of the AR. Objective:To determine the difference in total serum IgE level among subjects with and without ICM AR on computed tomography (CT) scan examination. To ob-serve difference in total serum IgE levels in subjects undergoing ICM adverse reaction based on the degree of severity. Method: An analytical study with cross-sectional design of 104 subjects undergoing CT scans with ICM, examined IgE levels before and after ICM was administered, then measured the severity of adverse re-actions of contrast media. Result: In this study, subjects undergoing adverse reactions, prior to administration Iopamidol had a higher mean IgE 1270.79 mg / dl compared with those who having AR 1174.90 mg / dl and after administration of Iopamidol a mean of Ig E is still higher in subjects having AR 1507.96 mg/dl com-pared with those having negative AR that is 1325.88 mg/dl, p = 0.696, statistically, not significant. Mild reac-tions in 40 subjects (38.5%) with cough, nausea, dizziness, itching, and sweating. Conclusion: Increase in total IgE levels in subjects with positive adverse reactions are independent(p=0.696).
Relationship of Advanced Paternal Age and Onset of Schizophrenia
Authors: Widyastuty Arsusy , Gultom Dapot P , Husada Muhammad Surya 
Published: May 2019

Background: Increased paternal age has been associated with an increased risk of spontaneous abortion, premature birth, infant mortality, congenital malformations, childhood cancer, epilepsy, autism, bipolar and schizophrenia in offspring. The biological mechanisms behind this relationship are not known but may be associated with de novo mutations and epigenetic changes in male cells with short and long term health consequences for their offspring. Males are responsible for most of the new mutations in the gene group, to the permanent distribution of reproductive cells and the number of mutations increases significantly with age.
Objective: The aim of the study to determine the correlation between paternal age and onset of schizophrenia. Method: This study was correlation analysis with cross sectional approach with The subject is 92 schizophrenia patient. Analysis of the data using statistical test that is chi-square.
Result: the study findings showed there was significant correlation between paternal age with schizophrenic aged onset of 0.001 (p <0.05).
Timi Flow Between Streptokinase and Alteplase in Successful Fibrinolytic
Authors: Ashrinda Dika , Hasan Refli , Andra Cut Aryfa , Muhtar Zulfikri , Hasan Harris 
Published: May 2019

STEMI with onset≤12 hours, necessary to take Primary Percutaneous Coronary Intervention (pPCI), but if there is no facility, another therapy is fibrinolytic, to improve blood flow in the coronary artery and myocardial function, thus reducing infarction expansion.
This is a retrospective study in STEMI patients onset≤12 hours, had performed successful fibrinolytic with Streptokinase (SK) and Alteplase (tPA) from January 2015 to August 2017. TIMI flow was assessed by coronary angiography. There were 54 patients who had performed successful fibrinolytic therapy with SK and tPA; each group had 27 patients. In the SK group, there were nine patients (33.3%) with TIMI flow 2 and 18 patients (66.7%) with TIMI flow 3. While in the tPA group there were 11 patients (40.7%) with TIMI flow 2, 16 patients (59.3%) with TIMI flow 3, (p=0.573). There is no difference in TIMI flow between SK and tPA on STEMI patients after success fibrinolytic therapy.
Epithelial ovarian cancer: Evolution of management in the era of precision medicine
Authors: Lheureux Stephanie , Braunstein Marsela , Oza Amit M. 
Published: May 2019

AbstractOvarian cancer is the second most common cause of gynecologic cancer death in women around the world. The outcomes are complicated, because the disease is often diagnosed late and composed of several subtypes with distinct biological and molecular properties (even within the same histological subtype), and there is inconsistency in availability of and access to treatment. Upfront treatment largely relies on debulking surgery to no residual disease and platinum‐based chemotherapy, with the addition of antiangiogenic agents in patients who have suboptimally debulked and stage IV disease. Major improvement in maintenance therapy has been seen by incorporating inhibitors against poly (ADP‐ribose) polymerase (PARP) molecules involved in the DNA damage‐repair process, which have been approved in a recurrent setting and recently in a first‐line setting among women with BRCA1/BRCA2 mutations. In recognizing the challenges facing the treatment of ovarian cancer, current investigations are enlaced with deep molecular and cellular profiling. To improve survival in this aggressive disease, access to appropriate evidence‐based care is requisite. In concert, realizing individualized precision medicine will require prioritizing clinical trials of innovative treatments and refining predictive biomarkers that will enable selection of patients who would benefit from chemotherapy, targeted agents, or immunotherapy. Together, a coordinated and structured approach will accelerate significant clinical and academic advancements in ovarian cancer and meaningfully change the paradigm of care.
English Conversation Teaching by Pair-work Technique for the First Year English Majored Students
Authors: Dalimunte Muhammad 
Published: May 2019

This study discusses about English conversation teaching by pair-work technique for the firts year English majored students. This study uses Classroom Action Research. It can be used to know the improvement of teachers’ activity and students’ ability after a particular technique applied. The research findings denoted that pair-work technique can attract the students’ motivation to take part in language teaching and improve their ability at speaking, It can seen from the improvement of students’ activities from cycle one to cycle two (82,5 % of the students took part in the teaching -learning process or at level 3,3 ,good category to 91,25% or at the level 3,65, good category in cycle two, and the improvement of their scores was 7 students (21,9%) got score 70 up in pre cycle, 29 students (90,6 %) in cycle one and 32 students (100%) in cycle two. It can be stated that the pair-work technique is appropriate to apply in teaching speaking.
Comparison of the efficacy of Ivabradine and Nebivolol as Mono Therapy in the Treatment of Stable Angina Pectoris Patients with Mild Left Ventricular Dysfunction
Authors: Hoque Harisul , Ahmed Khurshed , Mandal MRM , Kabir Faisal Ibn , Salam Md Abdus , Fatema Nilufar 
Published: May 2019

This prospective study aimed to investigate the efficacy of ivabradine and nebivolol in treatment of stable angina pectoris (SAP) patients with mild left ventricular dysfunction. Heart rate decreased (78±6) to (65±5) in Group: A and ( 77± 7) to (70 ± 5) in Group: B. There was no change in Blood pressure reduction in Group:A but significant BP reduction in Nebivolol group. Chest pain was reduced by Ivabradine but in Group : B, chest pain decreased in long term after 6 weeks time. After 6 months’ treatment LVEF for the 15 patients of nebivolol group (50%; Group: A) improved by (48 ± 6.5) to (51 ± 3.2), (p>0.05) and for the 15 patients of Ivabradine group (50%; Group: B) (47 ± 5.4) to (51 ± 2.3), (p>0.05). Ivabradine can be considered as first choice in patient with tachycardia induced angina as this agent for reducing heart rate as well as chest pain. The hypertensive patient with tachycardia may be treated by Nebivolol. Among patients in which effective treatment could not be achieved at maximum nebivolol doses, more effective results were obtained in this study with Ivabradine.
University Heart Journal Vol. 15, No. 1, Jan 2019; 8-11