bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efektivitas Model Pembelajaran Discovery Learning untuk Meningkatkan Keterampilan Berpikir Siswa Pada Materi Sistem Koloid
Authors: Hidayat Yattinah , Jofrishal Jofrishal , Seprianto Seprianto 
Published: July 2020

Penelitian ini bertujuan mengetahui efektivitas model pembelajaran discovery learning terhadap peningkatan keterampilan berpikir kritis siswa pada materi sistem koloid dan mengetahui keterlaksanaan model pembelajaran discovery learning. Penelitian ini menggunakan metode quasi eksperimen dengan desain pretest-posttest control group. Populasi dalam penelitian ini adalah seluruh siswa kelas XI IPA di MAN 1 Langsa tahun pelajaran 2018/2019. Teknik pengambilan sampel dilakukan dengan teknik cluster random sampling sehingga didapatkan 2 kelas sampel yaitu kelas eksperimen dan kelas kontrol. Instrumen yang digunakan untuk mengukur keterampilan berpikir kritis siswa yaitu tes berbentuk uraian pada materi sistem koloid. Keefektifan model pembelajaran discovery learning dilihat dari n-Gain, uji perbedaan rata-rata, dan uji ukuran pengaruh. Nilai n-Gain yang diperoleh pada kelas eksperimen sebesar 0,77 dan kelas kontrol sebesar 0,66, yang artinya peningkatan keterampilan berpikir kritis siswa pada kelas eksperimen dan kelas kontrol tergolong dalam kriteria sedang. Hasil uji perbedaan rata-rata menunjukkan bahwa nilai thitung (2,89) ≥ ttabel (1,68), sehingga H0 ditolak, yang artinya peningkatan keterampilan berpikir kritis siswa pada kelas eksperimen lebih tinggi secara signifikan dibandingkan siswa pada kelas kontrol. Hasil analisis ukuran pengaruh menunjukkan bahwa nilai μ yang diperoleh sebesar 0,96 yang artinya efek model discovery learning terhadap peningkatan keterampilan berpikir kritis siswa tergolong kategori besar. Berdasarkan nilai n-Gain, uji perbedaan rata-rata, dan uji ukuran pengaruh, maka dapat disimpulkan bahwa pembelajaran dengan model discovery learning lebih efektif dalam meningkatkan keterampilan berpikir kritis siswa pada materi sistem koloid dibandingkan pembelajaran yang tidak menggunakan model discovery learning. Keterlaksanaan model pembelajaran discovery learning pada materi sistem koloid di kelas XI IPA MAN 1 Langsa terlaksana dengan baik, dengan tingkat ketercapaian guru dalam mengelola pembelajaran pada setiap pertemuannya berturut-turut sebesar 73,80%, 79,10%, dan 85,70%. Sedangkan pada aktivitas siswa pada saat pembelajaran tiap pertemuannya berturut-turut sebesar 100%, 91,70%, dan 94,43%.
Pengaruh Penggunaan Aplikasi Chemdraw Sebagai Sumber Belajar Kimia Terhadap Peningkatan Hasil Belajar Mahasiswa pada Materi Spektroskopi NMR
Authors: Utami Krisna , Wati Julina , Veronika Sella , Astuti Retno Widi , Rahimuddin Rahimuddin 
Published: July 2020

Tujuan penelitian ini untuk mengetahui pengaruh penggunaan aplikasi ChemDraw sebagai sumber belajar kimia terhadap hasil belajar mahasiswa pada materi Spektroskopi NMR di Universitas Samudra. Metode yang digunakan dalam penelitian ini menggunakan metode pre-eksperimen dengan desain penelitian one group pretest posttest. Sampel yang dipilih adalah mahasiswa pendidikan kimia semester 5 berjumlah 15 orang dengan perlakuan pembelajaran menggunakan aplikasi ChemDraw pada materi Spektroskopi NMR. Teknik pengumpulan data dilakukan melalui tes tertulis, yakni berupa soal pretest dan posttest berbentuk essay. Data hasil tes dianalisis dengan menggunakan rumus uji T berpasangan dan N-Gain. Dari hasil uji T berpasangan dapat disimpulkan bahwa adanya pengaruh penggunaan aplikasi ChemDraw pada materi spektroskopi NMR terhadap hasil belajar mahasiswa semester 5 pendidikan kimia Universitas Samudra. Berdasarkan hasil yang diperoleh thitung > ttabel yakni 4,94 > 1,75 dengan nilai signifikan 0,00 < 0,05 sehingga H0 ditolak dan Ha diterima. Pada analisis N-Gain diperoleh rerata peningkatan hasil belajar adalah 0,6 yakni termasuk kategori sedang.
Pengaruh Wiyata Ligkungan dan Kecerdasan Ekologis Terhadap Sikap Kepedulian Lingkungan bagi Siswa MI
Authors: Purwono Agung , Jannah Tsamrotul 
Published: July 2020

Caring for the environment is very necessary because it sees the current condition that more and more cases of environmental damage and natural disasters caused by human hands. Planting an attitude of caring for the environment from an early age is very necessary. It is not only ecological intelligence possessed by students that helps shape the attitude of caring for the environment. The implementation of the program in schools also supports the cultivation of attitudes to care for the environment. The government has also collaborated with the environment minister and the minister of education. For the application of adiwwiyata-based schools. But not all schools are able to implement the program. The MI Dwi Dasa Warsa school institution also tried to instill this attitude in its students even though the institution was not based on adiwiyata. While the purpose of this study is to find out how much influence the application of the environment environment program and ecological intelligence on the attitude of environmental care students of MI Dwia Dasa Warasa Trawas Mojokerto.
This type of research is quantitative with a correlation approach, which aims to see how much influence the program has formed by the school and students' ecological intelligence on environmental attitudes students have. Retrieval of data in this study using a Likert scale, observation, documentation and interviews. The results of this study indicate the correlation of the application of the wiyata environmental program with an attitude of environmental care 0.831. While the correlation between ecological intelligence with environmental awareness attitude of students is 0.855. It can be concluded that there is a positive relationship between the application of the environment realy program and ecological intelligence with an attitude of caring for the environment.
ANALISIS LAHAN KRITIS DAN ARAHAAN PENGGUNAAN LAHAN PADA SUB DAERAH ALIRAN SUNGAI BINANGA LANTANG DI SULAWESI SELATAN
Authors: Ruhama Anita , Numba Sudirman , Saida Saida 
Published: July 2020

Land use does not the rules of soil and water conservation potentially lead to land causes of degradation that will eventually lead to critical land. The impact ofthe existence of critical landis the decrease of soil fertility, lack of water resoucesin dryseasonandin rain season. Critical land mapping is necessary to determine the right efforts in the management of upper course of Binanga Lantang Sub Watershed until not distrub ecosystem balanced.This study aims to identify the extent and distribution of critical land and formulate appropriate land use directions to suppress degraded land in Binanga Lantang Sub Watershed. The method based on Forestry Departement P.4/V-SET/2013 by overlap method, scoring and weighting of each parameter. The parameters used are map of vegetation class, productivity class map, class map slope, erosion class map and class map management. Reseach results show (1) Classification of critical land after land use direction Binanga Lantang Sub Watershed is very critically broad area 2870,38 ha, critically area 3541,11 ha, rather critically area 4962,34 ha, critical potential 3121,75 ha and not critically area 170,95 ha. (2) critical land Binanga Lantang Sub Watershed to reach 43,72 percen of the total watershed area. The entire production forest area is critical, the protected forest arund 50 percent of the area is in critical condition and other uses are only 20 percent of the area is in critical condition. (3) One of the efforts that can be done to minimize the increase in land criticality is agroforestry and rehabilitation.
Stress Analysis of a Landing Gear Using the Davies Method
Authors: Moreno Gonzalo Guillermo , Peña César Augusto , Gualdron Oscar Eduardo 
Published: July 2020

Structure and mechanism analysis often involves the use of advanced simulation programs, which are not always available to users. The Davies method has proven to be an efficient and easily applied tool in this type of analysis, allowing the obtaining of the stresses present in the links and the necessary torque to keep the device in optimal operative conditions. All these standards will set the foundations for the development and proper design of the mechanism. Taking into account the afore mentioned, this article describes in detail the use and applications of the Davies method for stress and kinematic analysis of a landing gear.
The Study of the Yield of DNA Extracted From Hairs of Postmortem Cases
Authors: Sujirachato Kanchana , Tirawatnapong Suranan , Mimae Nurhasnee , Inon Sirirat , Kaewdouengdee Adisuk , Worasuwannarak Wisarn 
Published: July 2020

Background: Problems frequently occur from hair extraction are low concentration and impurity of DNA.
Methods: Hairs from 30 postmortem cases were collected. In each case, 5 and 10 hair roots were extracted DNA by Phenol/Chloroform/Isoamyl alcohol. The amount and purity of DNA (A260/280) were detected by NanoDrop spectrophotometer. The quality of DNA was examined using polymerase chain reaction (PCR). Amount of DNA was analyzed compared with gender, age, and manner of death.
Results: The amount and purity of DNA extracted from 10 hair roots were slightly better than 5 hair roots (P > .05). The mean (range) of DNA concentration was 200.4 (35.2 - 799.6) ng/µL from 10 hair roots vs 148.2 (21.7 - 571.5) ng/µL from 5 hair roots in 30 µL volume whereas the mean (range) of A260/280 was 1.61 (1.31 - 1.99) in 10 hair roots vs 1.54 (1.32 - 1.90) in 5 hair roots. The results from NanoDrop showed no difference among various gender, age, and manners of death.
Conclusions: DNA can be extracted from hair by Phenol/Chloroform/Isoamyl alcohol. The quantity and quality of DNA were good enough for personal identification by PCR. DNA extracted from 10 hair roots is better than 5 hair roots.
Patient Waiting Time in Emergency Department of a Tertiary Level Hospital
Authors: Islam Md Khorshedul , Khair Mohammed Abu , Khanam Fahmida 
Published: July 2020

Background: Patient waiting time is an important factor of utilizing hospital service, patient satisfaction, quality of management etc. Hence, emergency department (ED) performance can be best assessed by measuring patients’ waiting time and affecting factors at this department.
Objective: To determine patient waiting time at ED and associated factors in a tertiary level hospital.
Materials and methods: This cross sectional study was conducted in ED of Chattogram Medical College & Hospital (CMCH), Bangladesh. A total of 175 patients or their attendants at ED were enrolled by convenient sampling technique. Data were collected by face- to- face interview with pretested semi-structured questionnaire and observational checklist. Descriptive statistics was used for analysis by MS Excel and SPSS 21st version windows software.
Result: Around half (47.40%) was male followed by female (32%) and children (20.6%). Mean (± SD) age of the patients was 33.69 ± 21.33 years. More than half (52.6%) were from rural areas followed by urban areas (47.7%). Average monthly family income was Tk. 23891.43(±13033.76). Mean (±SD) waiting time for collecting ticket, consultation with doctor, physical examination, and nursing services were 8.06(±7.98) minutes, 5.46(±6.95) minutes, 2.30(±1.11) minutes and 8(±6.22) minutes respectively. More than two fifth (41.1%) patients had waiting time within 5 minutes. The ratio of doctor/patient, nurse/patient, ticket provider/patient and trolleys & wheel chairs bearer/patient were 1:115, 1:58, 1:115 and 1:40 respectively. Majority of the patients (57.7%) were transferred to Inpatient Department (IPD). Statistically significant relationship was found between satisfaction on overall management and overall waiting time of ED (χ2 = 22.47, df =6, p=0.001).
Conclusion: Majority (48.1%) found satisfied with waiting time at the emergency department.
JOPSOM 2019; 38(2): 15-21
In vitro Propagation of Two Grapevine (Vitis vinifera L.) Cultivars under Conditions of Salt Stress
Authors: Kassa Getachew , Feyissa Tileye 
Published: July 2020

This study was aimed to investigate salt tolerance of two grapevine cultivars, ‘Chenine Blanc’ and ‘Canonannon’ through in vitro propagation on medium containing different concentrations of NaCl. Single-node shoots were cultured on MS with 1.0 mg/l BAP in combination with 0.1 mg/l IBA and containing 0.25, 0.50, 0.75, 1.00 or 1.50% NaCl. NaCl free medium was used as control. Shoots of both cultivars were cultured on the same MS containing 0.25, 0.50, 0.75 or 1.00% CaCl2 to reduce hyperhydricity. The shoots were transferred to rooting medium followed by acclimatization in greenhouse. Number and length of shoots and roots, number of leaves and nodes, length of nodes, fresh and dry weight of roots and shoots decreased significantly in consistent trend as the concentration of NaCl increased. ‘Canonannon’ cultivar was found to be significantly more tolerant to NaCl than ‘Chenine Blanc’ in all parameters. The lowest percentage of hyperhydric shoots were obtained on medium containing 0.25% CaCl2. Therefore, ‘Canonannon’ cultivar can be planted in relatively saline soils as it is more tolerant to salt than ‘Chenine Blanc’.
Plant Tissue Cult. & Biotech. 30(1): 47-56, 2020 (June)
In vitro Micropropagation of Bacopa monnieri (L.) Penn. - An Important Medicinal Plant
Authors: Rahe Md Adnan , Mollika Sanjida Rahman , Khan M Salim , Banu Tanjina Akhtar , Amin GM Al , Habib Md Ahsan , Akter Shahina , Islam Mousona , Sharmin Ripa Akter 
Published: July 2020

Investigation on in vitro multiple shoot regeneration in Bacopa monnieri (L.) Penn. using leaf and nodal explants was carried out on MS containing various concentrations and combinations of BAP, Kn, NAA and 2,4-D. Of the two explants, leaf showed the best response towards shoot regeneration and subsequent plant development on MS with 1.0 mg/l BAP and 0.25 mg/l Kn. In this combination, the mean number of shoots/explant was 10.6 ± 0.11 in leaf and 9.6 ± 0.29 in nodal explants. Maximum shoot length was recorded as 12.6 ± 0.21 and 11.20 ± 0.30 from leaf and nodal explants after six weeks of culture, respectively. Half strength of MS supplemented with 0.25 mg/l IBA was found to be the best medium for root formation. The in vitro regenerated plantlets were successfully transplanted in soil after acclimatization.
Plant Tissue Cult. & Biotech. 30(1): 57-63, 2020 (June)
Evaluation of explants for in vitro propagation of Citrus indica Tanaka - An Endangered Species
Authors: Sangma Shabaree YA , Pereira Lolly S , Dang JC , Mathew Binu 
Published: July 2020

Of the five explants viz., shoot tip, nodal segment, leaf disc, cotyledon and root tip excised from exegenic seedlings of Citrus indica Tanaka shoot tip cultured in MS supplemented with 0.5 mg/l of BAP generated shoots within 4.74 days, exhibiting highest percentage of response (85.82%) with highest number of shoots (8.9) and shoot length (3.04 cm). On the other hand nodal segment cultured in MS supplemented with 1.0 mg/l BAP showed 80% response in 5.16 days with a shoot number of 5.41 and shoot length of 2.43 cm. Cotyledon explants inoculated on MS supplemented with1.0 mg/l of TDZ produced shoots in 20 days with the highest response of 69.88%, with 3.77 shoots per cotyledon and shoot length of 2.03cm. Viable callus was obtained from leaf disc cultured on half strength MS medium with less Ca++ with 2, 4-D 0.5 mg/l + Kn 0.25 mg/l. This callus when inoculated on half strength MS medium with Kn 1.5 mg/l showed highest shoot bud proliferation of 66.66% with 10.06 shoots per callus. Root tip explant failed to produce any shoots. In vitro raised shoots of Citrus indica when cultured on half strength MS medium supplemented with NAA (1.0 mg/l) showed 80 % rooting in 5.66 days, with highest number of roots (6.16 per shoot) and longest root (3.78cm). Ninety per cent of in vitro rooted plantlets of Citrus indica survived in open conditions.
Plant Tissue Cult. & Biotech. 30(1): 87-96, 2020 (June)
Development of an in vitro Callus Induction Protocol and Shoot Proliferation for Selected Jatropha (Jatropha curcas) Accessions
Authors: Fufa Hundessa , Daksa Jiregna 
Published: July 2020

The present study was undertaken to establish a protocol for in vitro callusing of three Jatropha accessions, namely Metema, Adami Tulu and Shewa Robit from leaf explants. The medium supplemented with combination of 4.44 μM BAP and 4.52 μM 2,4-D resulted in maximum percentage of callus (100%) formed for all accessions. The maximum shoot regeneration (66.67%) from callus with 10.13 number of shoot was obtained from Shewa Robit in MS medum fortified with TDZ (2.27 μM ) and IBA (0.49 μM ). The presence of TDZ in the shoot regeneration medium has greater influence on the induction of adventitious shoot buds, whereas MS supplemented with BAP alone and combination with IBA did not induce shoot regeneration from callus culture. The results obtained in the present study would facilitate the high callus induction and regeneration responses in Jatropha for its improvement using biotechnological tools.
Plant Tissue Cult. & Biotech. 30(1): 131-141, 2020 (June)
In vitro Plant Regeneration from Nodal Explants of Coleus forskohlii Briq. - An Important Medicinal Plant
Authors: Janarthanam B , Sumathi E 
Published: July 2020

An efficient in vitro mass propagation and promising protocol has been successfully standardized and developed for Coleus forskohlii through direct organogenesis from nodal explants. Nodal explants cultured onto MS basal medium supplemented with 4.44 μM BAP recorded the highest response and produced 24.3 ± 0.2 shoots per explant with an average shoot length 5.6 ± 0.4 cm after 30 days of culture. The in vitro shoots recorded higher response for development of rooting on half strength MS fortified with 2.46 μM IBA which produced the best response 7.8 ± 0.6 roots per in vitro shoot with an average root length of 4.3 ± 0.1 cm after 25 days. The in vitro rooted plantlets were transferred for hardening and 90% of the plantlets survived were successfully acclimatized and established in small plastic pots. This protocol recorded to be a highly repeatable, successful and rapid technique that could be utilized for the commercial mass propagation and ex situ conservation of Coleus forskohlii. It is important to note that the morphology of the in vitro plantlets of Coleus forskohlii showed a true-to-type growth habit, both in vitro and when transferred to ex vitro growth conditions.
Plant Tissue Cult. & Biotech. 30(1): 143-148, 2020 (June)
A SYNTACTICAL PATTERN OF 2.5 YEARS OLD BOY UTTERANCE (A CASE STUDY)
Authors: Umam Akhmad Hairul 
Published: July 2020

This study aims to identify the utterances and to explore the language acquisition for 2.5 years old boy in its syntactical pattern. The duration of this research is four months by observing and recording the words expression pronounced by the boy. Based on the finding, this boy firmly acquires the language mostly by nature (innate ability). However, the positive environment enables him to develop the child’s language fluency. Both nature and environment have important roles in the child language acquisition. It is in line with the theoretical frame work of language acquisition that in general language acquisition is shaped and influenced mainly by two factors: biological (innate ability) and environmental factors. Awhile the type of the utterances spoken by the boy aged 2.5 years old consisting of declarative 48 %, interrogative 29%, imperative 21%, and exclamation utterances 2%. In the syntactical pattern, the boy mostly speaks using the predicate utterances pattern (P), subject-predicate (S-P), then predicate-subject (P-S). The predicate (P) and subject-predicate (S-P) pattern of utterances are the most frequently spoken by boy. The boy is accustomed to and easily expresses his intentions with those two patterns that have represented a complete utterance according to what the boy intended.
La actuación de las Cortes Generales durante el estado de alarma para la gestión de la crisis del COVID-19
Authors: García de Enterría Ramos Andrea , Navarro Mejía Ignacio 
Published: July 2020

Mediante el Real Decreto 463/2020, de 14 de marzo, el Gobierno declaraba el estado de alarma en todo el territorio nacional para la gestión de la situación de crisis sanitaria ocasionada por el COVID-19. Esta figura, con antecedentes en nuestra historia constitucional y prevista ahora en el artículo 116.2 de la Constitución, cuenta con el único precedente de 2010 cuando, el 4 de diciembre, se declaró el estado de alarma para la normalización del servicio público esencial del transporte aéreo, como consecuencia de la crisis de los controladores aéreos. Sin embargo, la peculiaridad que subyace a la actual declaración, pues son razones de salud pública las que han llevado a su adopción, obliga a una nueva reflexión en torno a esta institución. En particular, se hace preciso un estudio de cómo el Parlamento, institución democrática por excelencia, ha tratado de adecuar su funcionamiento, exigido por el artículo 116.5 de la Constitución, a las medidas sanitarias impuestas. Asimismo, se concluye con el análisis de una serie de cuestiones constitucionales que, como consecuencia de la declaración del estado de alarma, se han ido planteando. En concreto, se abordan tres cuestiones principales: la adecuación de la declaración del estado de alarma, el efectivo funcionamiento de las Cortes durante su vigencia y la articulación de sesiones telemáticas.
GIMÉNEZ GLÜCK, D. (2019). El gobierno hiperminoritario (y su relación con el parlamento). Valencia: Tirant lo Blanch (Recensión)
Authors: Miranda López Luis Manuel 
Published: July 2020

Recensión de la obra: GIMÉNEZ GLÜCK, D. (2019). El gobierno hiperminoritario (y su relación con el parlamento). Valencia: Tirant lo Blanch
Nuevos (y necesarios) límites a las comisiones de investigación competencias autonómicas y la inviolabilidad del rey
Authors: Pascua Mateo Fabio Antonio 
Published: July 2020

El Tribunal Constitucional estima el recurso presentado por el Gobierno en aplicación del Título V LOTC contra la resolución 298/XII del Parlamento de Cataluña por la que se acuerda constituir una comisión parlamentaria de investigación sobre la monarquía. Dicho fallo estimatorio se produce por considerar que, en primer término, al pretender controlar políticamente a una institución que tiene naturaleza de órgano constitucional del Estado, la resolución excede de las competencias de la Comunidad Autónoma de Cataluña, marco que define la capacidad de actuación de las comisiones de investigación autonómicas y, en general, la de las propias asambleas. Por otra parte, la formulación de un juicio político, trufado además de imputaciones de carácter jurídico penal con respecto, al menos, del monarca actual y de su antecesor, vulnera la inviolabilidad de la persona del rey y su no sujeción a responsabilidad establecidas en el art. 56.3 CE.
KEPEMIMPINAN PEREMPUAN DALAM PERSPEKTIF HUKUM ISLAM
Authors: Yanggo Huzaemah Tahido 
Published: July 2020

Di dalam Islam ada beberapa isu yang sering diangkat ke permukaan terutama yang berkaitan dengan isu relasi jender. Isu tersebut, antara lain konsep kepemimpinan perempuan, aurat, busana muslimah, persaksian, poligami, hak-hak reproduksi perempuan, peran publik perempuan, dan konsep superioritas laki-laki dan sebagainya. Dalam artikel ini menyuguhkan salah satunya yakni kepemimpinan perempuan dalam perspektif hukum Islam. Jika membaca sepintas beberapa ayat dan hadis tentang hal tersebut, terkesan ada kecenderungan seolah Islam memojokkan perempuan dan mengistimewakan laki-laki. Akan tetapi, jika menyimak secara mendalam dengan menggunakan metode semantik, semiotika dan hermeneutik secara kritis, maka justru sebaliknya, Islamlah yang pertama kali menggagas konsep keadilan jender dalam sejarah, sepanjang kehidupan umat manusia. Melalui artikel ini, akan menjelaskan bagaimana nashnash yang telah diteliti tentang perempuan dan juga dapat meluruskan penafsiran klasik yang terbukti tidak objektif, karena ternyata terkontaminasi oleh kondisi sosial budaya yang didominasi oleh peran laki-laki, terutama sekali terkait dalam konteks kepemimpinan perempuan.Kata Kunci : Kepemimpinan, Perempuan dan Hukum Islam