bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pertumbuhan dan Alokasi Biomassa Organ Tanaman Mahoni (Swietenia mahagoni L.) yang Ditanam Pada Tanah Bekas Tambang Emas dengan Perlakuan Pupuk Kandang
Authors: Ambardini Sri , Ningsih Rita , Kali Yustina Rante 
Published: July 2019

Abstract. The purpose of this study is to determine the growth and biomass allocation of Mahagony plant organs are planted on ex-gold mining soil with manure treatment. The experimental research with four treatments are control (without manure), manure (cow, goat, chicken) with five replications. The plant growth parameters are observed consist of plant height, stem diameter, leaf number, leaf area, rooth lenght, dry weight, and biomass percentage are located to leaves, stems and plant roots. The data are tested anova and continue with t-test. The result showed that the treatment of manure had efeect on the growth and mahagony planted on ex-golg mining soil. Plant biomass on all manure treatment are largest alloccated to leaves organ then to stems and roots. Based on t-test result that the cow manure treatment is better to supporting growth and biomass of mahagony plant than chicken manure, goat manure and control.Keywords: growth, biomass, mahagony, ex-gold mining soil, manure
Efektivitas Ekstrak Pektin dari Kulit Buah Jeruk Bali (Citrus maxima) Sebagai Antimikroba
Authors: Wana Nur , Pagarra Halifah 
Published: July 2019

Abstract. The aim of this study was to investigate the effectiveness of pectin extract and antimicrobial activity of pectin extract from the skin of grapefruit (Citrus maxima) with variations in pH, temperature, and extraction time. This study was an experimental study with laboratory testing using a completely randomized design (CRD) with 2x3x3 factorial three times repetition. Factor A is pH: 1.5 (A1), 2.5 (A2). Factor B is the heating temperature: 60°C (B1), 80°C (B2), 100oC (B3). Factor C is time: 60 minutes (C1), 90 minutes (C2), 120 minutes (C3). While the design measurement of antimicrobial activity is carried out by calculating the diameter of the inhibition zone (mm). All data obtained were analyzed using ANOVA (α = 0.05%, then continued by Tuckey's advanced test using SPSS). Extraction of pectin from the skin of grapefruit using a conventional method with hydrochloric acid (0.5N HCl). The extraction process was carried out by heating the hot plate by varying the temperature (60 oC; 80 oC; 100oC), pH (1.5; 2.5), and extraction time (60; 90; 120 minutes). Significant pectin yields obtained were tested for antimicrobial activity and measured inhibitory zones produced based on the diameter of the antimicrobial area. The results showed that extraction was influenced by pH, temperature, and extraction time and the highest pectin yield was obtained by extraction with ph 2.5, temperature 60oC, time 90 minutes as much as 27.8%. While the antimicrobial activity of pectin extract from the skin of grapefruit (Citrus maxima) has antibacterial activity because it can inhibit the growth of Escherichia coli bacteria, Staphylococcus aureus. However, it has no antifungal activity against Candida albicans.Keywords: Grapefruit skin (Citrus axima), Pectin, extraction, antimicrobial activity.
Pengaruh Model Pembelajaran Kooperatif Tipe TGT (Teams Games Tournament) berbasis Macromedia terhadap Hasil Belajar Kimia Organik pada Mahasiswa Pendidikan Biologi STKIP YAPIM Maros
Authors: Rusdi Hikmah , Murti Warda 
Published: July 2019

ABSTRAKJenis penelitian ádalah penelitian eksperimen dengan subyek penelitian yaitu mahasiswa program studi pendidikan biologi yang sedang menempuh mata kuliah kimia organik pada semester genap (II) tahun akademik 2016/2017. Prosedur penelitian dilaksanakan melalui pembagian kelas berdasarkan perlakuan model pembelajaran yang diberikan, kelas eksperimen menerapkan model pembelajaran kooperati tipe TGT berbasis Macromedia dan kelas konstrol menerapkan model pembelajaran kooperati tipe TGT. Teknik Pengumpulan data dalam penelitian ini dilakukan dengan teknik pemberian pretest-postest untuk hasil belajar. Instrumen penelitian yang digunakan adalah tes essai yang telah divalidasi item. Data yang terkumpul kemudian dianalisis menggunakan teknik uji normalitas, uji homogenitas, dan uji hipotesis dengan bantuan SPSS Versi 21 for Windows serta analisis N-gain. Berdasarkan uji t diperoleh thitung > ttabel (4,45 > 2,019). Hasil penelitian ini menunjukkan bahwa terdapat pengaruh model pembelajaran kooperatif tipe TGT berbasis Macromedia terhadap hasil belajar kimia organik mahasiswa pendidikan biologi STKIP YAPIM Maros.Kata kunci: TGT, Macromedia, Hasil belajarABSTRACTThe type of research is experimental research with the subject of research that is the biology education program students who are taking organic chemistry course in the even semester (II) of 2016/2017 academic year. The research procedure was carried out through class division based on the treatment of the given learning model, the experimental class applied the cooperative learning model TGT based on Macromedia and the constrol class applied the TGT type. Technique Data collecting in this research is done by giving pretest-postest technique for learning result. The research instrument used is essay test which has validated the item. The collected data were then analyzed using normality test, homogeneity test, and hypothesis test with SPSS Version 21 for Windows and N-gain analysis. Based on t test was obtained t count> ttable (4.45> 2.019). The results of this study indicate that there is influence of cooperative learning model type Macromedia-based TGT on organic chemistry learning result of biology students STKIP YAPIM Maros.Keywords: TGT, Macromedia, Learning Result
Penerapan Model Pembelajaran Kooperatif Tipe Numbered Heads Together (NHT) terhadap Aktivitas Belajar Siswa pada Materi Ikatan Kimia Kelas X 1 SMA Negeri 3 Watampone
Authors: Nurpaidah Sitti 
Published: July 2019

ABSTRAKPenelitian ini bertujuan untuk menerapkan pembelajaran tipe numbered heads together (NHT) untuk mengetahui aktivitas belajar siswa pada materi ikatan kimia siswa Kelas X 1 SMA Negeri 3 Watampone. Penelitian ini dilaksanakan sebanyak 2 siklus dan setiap siklus dilakukan sebanyak empat kali pertemuan termasuk tes setiap akhir siklus. Pengumpulan data dilakukan dengan teknik observasi terhadap aktifitas siswa setiap akhir siklus di kelas tersebut dan catatan lapangan selama tindakan pembelajaran berlangsung. Dalam penelitian ini terlihat jelas bagaimana perubahan aktivitas siswa ketika pembelajaran berlangsung yaitu: (1) Siswa yang hadir selama siklus I mencapai 95% dan pada siklus II ada peningkatan menjadi 100%. (2) Siswa yang memperhatikan dan mencatat pelajaran mencapai 73,33% dan pada siklus II mencapai 96,67%. (3) Siswa yang aktif dalam diskusi kelompok pada siklus I dan siklus II sama-sama mencapai 100%, (4) Siswa yang bertanya tentang materi bahan ajar yang kurang jelas pada siklus I mencapai 8,34% dan pada siklus II mencapai 0%, (5) Siswa yang aktif dalam pemecahan masalah pada siklus I mencapai 40% dan pada siklus II mencapai 45%. (6) Siswa yang menjelaskan hasil diskusi kelompok di papan tulis mencapai 31,67% dan pada siklus II mencapai 53,33%.Kata Kunci : NHT, Aktivitas belajar, Ikatan kimiaABSTRACTThis study aims to apply the Numbered Heads Together (NHT) learning method to determine student learning activities in the material of chemical bond of Class X 1 students of SMA 3 Watampone.This study was conducted in 2 cycles and each cycle is done as much four meetings including tests at each end of the cycle. Data collection is done by observation techniques to student activities and evaluation of learning outcomes at each end of the cycle in the class and field notes during the learning action. In this study it is clear how changes in student activity when learning takes place are: (1) Students who present during the cycle of the I reached 95% and a cycle II no increase in a 100%. (2) Students noticed and record the lessons achieve 73,33% and at the cycle II achieve 96,67%. (3) Students active in the group discussions on cycle I and cycle II same the same reach 100%. (4) Students who asked about the material teaching materials less clear on cycle I achieve 8,34% and at the cycle II reach 0%. (5) Students active in resolution on cycle I reach 40% and at the cycle II reach 45%. (60 students who describes the results discussion groups in the board achieve 31,67% and at the cycle achieve 53,33%.Keywords: NHT, Learning activity, Chemical bonding
Rancangan Program Aplikasi Al-Faraidh sebagai Media Pembelajaran Mawaris di MAN Model Banda Aceh
Authors: Sujud Amru , BJ Juanda , Vrianda Sandy 
Published: July 2019

a b s t r a c tThis study aims to design a new system and method of application program Al-Faraidh as a medium of learning fiqih mawaris in MAN Model Banda Aceh. This research uses qualitative descriptive method, that is by collecting data through interview with fiqih teachers and literature study. The study of jurisprudence is difficult to achieve the expected competence, mawaris calculation is also still done manually. Students tend to be less interested in learning fiqih mawaris because it is considered too difficult. Therefore it is necessary to design an application program as a learning medium that facilitates and attracts students' attention. The design of the web-based application program can process the data muwaris (person who left the heirs), data of heirs along with his position against muwaris, heirs, muwaris reports, and recapitals report on the division of inheritance. The application program is expected to be an effective solution of the problem, thus simplifying the process of calculating the inheritance, especially in the process of learning.Keywords:Applications Alfaraidh, Mawaris, Media Learning a b s t r a kPenelitian ini bertujuan merancang sebuah sistem dan metode baru berupa program aplikasi Al-Faraidh sebagai media pembelajaran fiqih mawaris di MAN Model Banda Aceh. Penelitian ini menggunakan metode deskriptif kualitatif, yaitu dengan mengumpulkan data melalui wawancara dengan Guru Fiqih dan studi pustaka. Pembelajaran fiqih mawaris sulit mencapai kompetensi yang diharapkan, perhitungan mawarisnya juga masih dilakukan secara manual. Siswa cenderung kurang tertarik mempelajari fiqih mawaris karena dianggap terlalu sulit. Oleh karena itu diperlukan sebuah rancangan program aplikasi sebagai media pembelajaran yang memudahkan dan menarik perhatian siswa. Rancangan program aplikasi yang berbasis web tersebut dapat mengolah data muwaris (orang yang meninggalkan harta waris), data ahli waris beserta kedudukannya terhadap muwaris, harta waris, laporan muwaris, dan laporan rekap hasil pembagian harta waris. Program aplikasi tersebut diharapkan dapat menjadi solusi yang efektif dari permasalahan tersebut, sehingga mempermudah proses perhitungan harta waris, khususnya dalam proses pembelajaran.Kata Kunci:Aplikasi Alfaraidh, Mawaris, Media Pembelajaran
The Dependence of Solar, Plasma, and Geomagnetic Parameters’ Oscillations on the Heliospheric Magnetic Field Polarities: Wavelet Analysis
Authors: El-Borie M. A. , El-Taher A. M. , Thabet A. A. , Bishara A. A. 
Published: July 2019

Abstract
We investigate the dependence of solar, plasma, and geomagnetic parameters’ periodicities on the heliospheric magnetic field polarities for the past five solar activity cycles (1967–2016). For this purpose, the Morlet wavelet technique has been performed to extract information about significant periods. The monthly averages of toward (

) and away (

) polarity groups have been calculated for each parameter. The solar and plasma parameters used in this work are the interplanetary magnetic field (

), sunspot numbers (

), and solar plasma speed (

), and the geomagnetic indices

,

, and

. We found that the wavelet power spectra (WPS) for the monthly averages of

and

nearly showed a symmetrical power spectra distribution. The global wavelet spectra (GWS) for

and

displayed a coupling at some level between 3.2–3.5, 10.7, and 18.3 yr of variations. The GWS for

provided two significant peaks, within the 95% confidence level, at 9.8 and 15.2 yr, as well as at 1 and 9.8 yr, for

. In addition, the existence of a periodicity of 1 yr is obvious for

spectra and it shifted to a 1.5 yr variation in

spectra. Both the WPS and GWS for

and

reflect symmetric power spectra for both groups in the northern and southern hemispheres. The

spectra exhibited prominent periodicities at 10.7 yr for

and 9.8 yr for

. Also, the well-known 9.8 yr periodicity variation is a dominant variation in both the spectra of

and

. On the other hand, within the cone of influence, the periodicities of 10.7 and 13.9 yr are observed for the

spectra and 9.8 yr for

spectra. The GWS showed double-peak structure for the spectrum of

.
The Physical Origin of the Venus Low Atmosphere Chemical Gradient
Authors: Cordier Daniel , Bonhommeau David A. , Port Sara , Chevrier Vincent , Lebonnois Sébastien , García-Sánchez Fernando 
Published: July 2019

Abstract
Venus shares many similarities with the Earth, but concomitantly, some of its features are extremely original. This is especially true for its atmosphere, where high pressures and temperatures are found at the ground level. In these conditions, carbon dioxide, the main component of Venus’ atmosphere, is a supercritical fluid. The analysis of VeGa-2 probe data has revealed the high instability of the region located in the last few kilometers above the ground level. Recent works have suggested an explanation based on the existence of a vertical gradient of molecular nitrogen abundances, around 5 ppm per meter. Our goal was then to identify which physical processes could lead to the establishment of this intriguing nitrogen gradient, in the deep atmosphere of Venus. Using an appropriate equation of state for the binary mixture CO2–N2 under supercritical conditions, and also molecular dynamics simulations, we have investigated the separation processes of N2 and CO2 in the Venusian context. Our results show that molecular diffusion is strongly inefficient, and potential phase separation is an unlikely mechanism. We have compared the quantity of CO2 required to form the proposed gradient with what could be released by a diffuse degassing from a low volcanic activity. The needed fluxes of CO2 are not so different from what can be measured over some terrestrial volcanic systems, suggesting a similar effect at work on Venus.
Coronal Loop Scaling Laws for Various Forms of Parallel Heat Conduction
Authors: Bradshaw Stephen J. , Emslie A. Gordon , Bian N. H. , Kontar Eduard P. 
Published: July 2019

Abstract
The solar atmosphere is dominated by loops of magnetic fluxes that connect the multi-million degree corona to the much cooler chromosphere. The temperature and density structure of quasi-static loops are determined by the continuous flow of energy from the hot corona to the lower solar atmosphere. Loop scaling laws provide relationships between global properties of the loop (such as the peak temperature, pressure, and length); they follow from the physical variable dependencies of various terms in the energy equation, and, hence, the form of the loop scaling law provides insight into the key physics that control the loop structure. Traditionally, scaling laws have been derived under the assumption of collision-dominated thermal conduction. Here, we examine the impact of different regimes of thermal conduction—collision-dominated, turbulence-dominated, and free-streaming—on the form of the scaling laws relating the loop temperature and heating rate to its pressure and half-length. We show that the scaling laws for turbulence-dominated conduction are fundamentally different than those for collision-dominated and free-streaming conduction, inasmuch as the form of the scaling laws now depend primarily on conditions at the low-temperature, rather than high-temperature, part of the loop. We also establish regimes in the temperature and density space in which each of the applicable scaling laws prevail.
Doravirine dose Selection and 96-Week Safety and Efficacy versus Efavirenz in Antiretroviral Therapy-Naive Adults with HIV-1 Infection in a Phase IIb Trial
Authors: Gatell Jose M , Morales-Ramirez Javier O , Hagins Debbie P , Thompson Melanie , Arastéh Keikawus , Hoffmann Christian , Raffi François , Osiyemi Olayemi , Dretler Robin , Harvey Charlotte , Xu Xia , Plettenberg Andreas , Smith Don E , Portilla Joaquín , Rugina Sorin , Kumar Sushma , Frobose Colleen , Wan Hong , Rodgers Anthony , Hwang Carey , Teppler Hedy 
Published: July 2019

Background The safety and efficacy of doravirine were compared with that of efavirenz as initial treatment of adults living with HIV-1 infection (NCT01632345). Methods A Phase IIb double-blind trial with participants stratified by screening HIV-1 RNA (≤ or >100,000 copies/ml) and randomized 1:1:1:1:1 to receive once-daily doravirine (25, 50, 100 or 200 mg) or efavirenz 600 mg (Part I) for up to 96 weeks, with open-label tenofovir disoproxil fumarate 300 mg/emtricitabine 200 mg (TDF/FTC). After dose selection at week 24, doravirine 100 mg was provided to participants receiving the other doses of doravirine and additional participants were randomized 1:1 to receive once-daily doravirine 100 mg or efavirenz 600 mg for 96 weeks with TDF/FTC (Part II). Primary outcomes were the proportion of participants with HIV-1 RNA <40 copies/ml at week 24, and central nervous system (CNS) adverse events (AEs) by weeks 8 and 24 (Parts I+II combined). Results 210 and 132 participants were randomized in Parts I and II, respectively, and 216 (108 on doravirine 100 mg, 108 on efavirenz) were evaluable for Parts I+II combined. At week 24, the proportion of participants with HIV-1 RNA <40 copies/ml was 72.9% for doravirine 100 mg and 73.1% for efavirenz (difference −0.5 [95% CI −12.3, 11.2]). In addition, CNS AEs were reported by 26.9% and 47.2% of doravirine and efavirenz recipients, respectively (difference −20.4 [95% CI −32.6, −7.5]; P=0.002). Conclusions Doravirine 100 mg with TDF/FTC demonstrated similar antiretroviral activity and superior CNS safety compared with efavirenz 600 mg with TDF/FTC.
Community composition of ground beetles (Coleoptera, Carabidae) in citrus orchard in North-Eastern of Algeria
Authors: Ouchtati Nadia , Meliani Amel , Abdelkrim Asma , Kolli Zine Eddine 
Published: July 2019

Carabid beetles are natural enemies of insects pests and are weed seeds predators. They have been often used to study the ecological effects of different agricultural measures, because they are highly sensitive to habitat change.
The Carabid beetle fauna is little known in Algeria, especially in agrosystems, thus we undertaken a study of this group of insects in citrus orchard located in the city of Guelma. Carabids were collected by pitfall trapping from december 2017 to may 2018. A total of 16 beetle species and 1072 individuals were recorded. The dominant species were consecutively as follows: Amara subconvexa , Brachinus sclopeta, Phyla rectangulum, Harpalus siculus and Percus lineatus.
The data of the species traits as food preference and flying ability show that carnivorous and macropterous species dominate in the study area. The activity of the species was mainly observed during the spring period.
Comparison of carabid beetles community between two cereal fields (treated and untreated) in north east of Algeria
Authors: Saouache Yasmina , Boumalit Saliha , Bouhdjar Insaf 
Published: July 2019

The average yield of cereal crops increased by more than 98% worldwide and part of this dramatic yield increase is due to the increasing use of pesticides. Unfortunately, the use of phytosanitary products to eliminate pests has not spared some natural enemies of these crops.
Carabids beetles are important biological control agents in agroecosystems and are one of the most sensitive invertebrate groups to environmental disturbances such as use of pesticides or type of plowing. However, in the context of beetle diversity conservation and encourage biological control, we have undertaken a bioecological study of the carabid fauna in two cereal fields (treated and untreated) situated in the north est of Algeria. The beetles were sampled from april to june 2018.
Species richness and abundance values revealed a great difference between the two sampled area. We recorded 38 species and 332 individuals in the untreated field versus 18 species and 89 individuals in the treated field. The data of the species traits as diet, dispersal ability and habitat affinity show that predators, macropterous and xerophilic species dominate in both crops.
Effectiveness of Education Courses in Enhancing Clinical Educators' Teaching Ability
Authors: Liu Yong-bing , Xue Ling-ling , Xue Hui-ping , Hou Ping 
Published: July 2019

Background:
In China, the nursing discipline has undergone rapid development in recent years, and clinical educators are an important part of the nursing education team. In order to improve their teaching ability and become competent clinical educators, we provided learning opportunities to them.

Method:
To assess the effectiveness of education courses and modules, a cross-sectional study based on questionnaire responses was conducted. Sixty-six part-time clinical nurse educators from six teaching hospitals were included. A standardized four-section questionnaire developed by the authors was used.

Results:
The education curriculum was approved by clinical educators (94%). The specific content in the education courses significantly improved the teaching ability (84%). From a teaching perspective, the confidence was enhanced; the clinical educators were able to control the purpose of teaching and learning objectives via a syllabus (92%).

Conclusion:

Education courses can improve teaching ability, reinforce teaching control, and promote the quality of clinical teaching.

[
J Contin Educ Nurs.
2019;50(8):367–373.]
Evaluating Transfer of Continuing Education to Nursing Practice
Authors: Bryant Tiffany , Posey Laurie 
Published: July 2019

Background:The nursing profession needs solid evidence of the important contributions that continuing education (CE) makes to nursing practice change. We analyzed nurses' intent to change practice, actual practice change, and examples of practice change after completing CE courses of differing types, topics, and geographic locations.Method:A retrospective, mixed-methods study design was used to assess quantitative and qualitative survey data gathered upon completion and within 1 year following completion of 16 different CE courses.Results:A large majority of nurses reported positive intent to change practice (88.6%) and actual practice change (89.1%) following participation in the CE courses. Qualitative analysis revealed four themes related to types of practice change, including Becoming Certified, Improved Leadership, Enhanced Role Performance, and Educating or Mentoring Others.Conclusion:CE can positively influence nursing practice change and lead to broader organizational improvements.[J Contin Educ Nurs.2019;50(8):375–380.]