bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengembangan Buku Ajar Matakuliah Biokimia Berintegrasi dengan Nilai-Nilai Sains dalam Alquran
Authors: Wahyuni Tutik Sri
Published: August 2019

Bahan ajar merupakan salah satu kebutuhan utama agar proses pembelajaran terlaksana secara efektif sehingga capaian pembelajaran yang telah ditetapkan dapat berhasil. Tujuan penelitian ini adalah mengembangkan buku ajar Biokimia yang berintegrasi dengan nilai-nilai sains dalam al-Qur’an di IAIN Tulungagung. Salah satu contoh integrasi ilmu dalam buku ajar ini terdapat dalam QS. Al-An’am: 99 tentang rezeki yang disediakan Allah SWT dengan menumbuhkan beraneka jenis tumbuhan yang menghasilkan biji-bijian dan buah sebagai sumber karbohidrat, protein dan lemak. Pengembangan buku ajar menggunakan model Dick and Carey, namun pada penelitian ini dilakukan sampai tahap evaluasi formatif dan revisi karena pertimbangan keterbatasan waktu dan tenaga. Analisis data berupa data deskriptif kuantitatif dan deskripsi kualitatif. Berdasarkan hasil uji kelayakan produk oleh validator ahli dan uji coba kelompok terbatas, buku ajar yang dikembangkan ini telah memenuhi kriteria valid dan layak digunakan dengan skor rata-rata dari ketiga validator sebesar 84,5%. Penelitian lebih lanjut diperlukan jika bahan ajar ini hendak digunakan dalam skala luas. Selain itu, perlu disusun Rencana Pelaksanaan Pembelajaran (RPP) untuk memperjelas kapan tahapan integrasi ayat al-Qur’an dalam pembelajaran sains (biokimia) dilakukan.
Transpor Fenol dalam Teknik Membran Cair Fasa Ruah Menggunakan Ion Logam Transisi sebagai Fasa Penerima
Authors: Refinel Refinel , Emil Salim  , Indah Tri Astuti
Published: August 2019

Fenol merupakan salah satu polutan berbahaya yang terakumulasi dalam perairan dan bersifat stabil. Penelitian ini menggunakan teknik membran cair fasa ruah untuk mengurangi kadar fenol pada perairan sehingga konsentrasinya tidak melebihi ambang batas yang diperbolehkan oleh yakni 1 mg/L. FeCl3 dan kloroform berperan sebagai fasa penerima dan membran dalam penelitian ini. Pengaruh berbagai macam variasi seperti jenis fasa penerima, konsentrasi fasa sumber, konsentrasi fasa penerima dan pH fasa penerima serta lama waktu pengadukan telah dipelajari. Kondisi optimum percobaan diperoleh pada konsentrasi fasa sumber 5 x 10-4 M dengan pH 2, konsentrasi fasa penerima 1,2 x 10-4 M dengan pH 6, serta waktu pengadukan selama 90 menit. Efisiensi transpor fenol yang diperoleh pada fasa penerima sebesar 93,28%. Konsentrasi fenol pada fasa sumber dan fasa penerima diukur menggunakan spektrofotometer UV-Vis pada panjang gelombang maksimum 270 nm. Hasil HPLC menunjukkan bahwa fenol yang tertranspor ke fasa penerima lebih banyak dibandingkan yang tinggal di fasa sumber ditandai dengan tinggi puncak pada kromatogram. Hal ini menunjukkan bahwa teknik membran cair fasa ruah efektif menurunkan kadar fenol dengan menggunakan ion logam Fe sebagai fasa penerima.
Konzerviranje rakova upotrebom sumpornog dioksida i sulfita (E 220 – E 228)
Authors: Stražanac Danijela , Sokolić Darja , Bašić Sandra , Hengl Brigita , Gross-Bošković Andrea
Published: August 2019

Food additives are substances of known chemical composition that are neither consumed as food nor typical food ingredients, regardless of their nutritional value, but are instead added to foodstuffs to perform certain technological functions and retain certain sensory properties of food. Additives that are widely applied in food industry include sulphur dioxide (SO2) and sulphites (E 220 – E 228). Sulphur dioxide and its derivatives are added to foodstuffs in order to inhibit and control the growth of microorganisms, for the purpose of prevention of non-enzymatic browning and inhibition of enzyme-catalysed reactions, as well as antioxidants and reducing agents.Food to which they are most often added includes various dried fruits, certain species of crabs and molluscs, fruit juices, beer, wine and other products. Since harmful effects of sulphur dioxide and sulphites are most commonly associated with allergic reactions to food, it is, therefore, necessary to inform consumers of their presence in food, even when they are present in very small quantities, because their quantity itself does not exclude the possibility of an allergic reaction. The use of sulphur dioxide and sulphites in the processing of crabs (scampi, shrimp, and lobster) is justified by their preservative effect on slowing the growth of bacteria and preventing the formation of melanomas that manifest by the emergence of black spots on crab shell caused by the polyphenol oxidase enzyme activity. Sulphur dioxide and sulphites are regulated by Regulation (EC) No. 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives as amended by Commission Regulation (EU) No. 1129/2011 amending Annex II to Regulation (EC) No 1333/2008 of the European Parliament and of the Council by establishing a Union list of food additives. In 1993, the International Agency for Research on Cancer (IARC) classified sulphur dioxide and sulphites as Group 3, meaning they are not classifiable as to their carcinogenicity to humans. The European Food Safety Authority (EFSA) has, in its Scientific Opinion on the re-evaluation of sulphur dioxide (E 220), sodium sulphite (E 221), sodium bisulphite (E 222), sodium metabisulphite (E 223), potassium metabisulphite (E 224), calcium sulphite (E 226), calcium bisulphite (E 227) and potassium bisulphite (E 228) as food additives, confirmed that the current acceptable daily intake (ADI) of 0.7 mg SO2 equivalent/kg of body weight per day would remain adequate.
Anorthosites of the low-sulfide platiniferous horizon (Reef I) in the upper riphean Yoko-Dovyren massif (Northern Cisbaikalia): new data on the composition, PGE-Cu-Ni mineralization, fluid regime and formation conditions
Authors: Orsoev D. A.
Published: August 2019

The carried out studies based on new data allowed to give mineralogical, petro- and geochemical characteristics to anorthosites, which are the main link and the major concentrator of PGE and Au in the composition of low-sulfide platinum metal mineralization, localized in a specific taxitic horizon (Reef I) of the Yoko-Dovyren massif. The revealed features of the composition and structure of this horizon indicate that the formation of anorthosites is caused by both the actual magmatic and the late- and postmagmatic processes with a high activity of volatile components. The horizon occurrence can be explained in terms of the “compaction” hypothesis and thermal shrinkage phenomenon. At the boundary of the rocks contrasting in composition and characteristics, when they are cooled, weakened zones form up to cracks and cavities, into which the interstitial leucocratic melt and volatiles squeezed out of the underlying horizons of the massif sucked as a result of the decompression effect. The revealed patterns of changes in the compositions of Pl (82-88% An), Ol (78-81% Fo), Cpx (40-44% En, 9-18% Fs, 41-47% Wo) and Opx (74-78% En, 16-24% Fs, 2-5% Wo) indicate fractional crystallization of the detrital melt. The processes of fluid-magmatic interaction led to a considerable heterogeneity of anorthosites and other rocks, the formation of disequilibrium mineral associations and concentration of ore-generating components. Sulfide associations are considered as products of the subsolidus transformation of solid solutions (mss and iss + poss) formed during the crystallization of an immiscible sulfide liquid enriched in Cu. It is demonstrated that noble metals were associated not only with a limited amount of sulfide liquid. The major part of noble metals with “crust” components (Sn, Pb, Hg, Bi, As, Sb, Te, S, etc.) entered the anorthosite cavities along with volatile components and chlorine, thus causing an abundance of native minerals among platinoids. The decisive role of reduced gases (H2, CH4, CO), H2O and Cl in the genesis of precious metal minerals is estimated.
Scale effect in a fluid-conducting fault network
Authors: Petrov V. A. , Lespinasse M. , Poluektov V. V. , Ustinov S. A. , Minaev V. A.
Published: August 2019

The data presented in the article consistently outlines the methodology for studying the orientation and morphogenetic characteristics of fracture systems of four scale levels including kilometers, meters, centimeters and millimeters. The Urtuisky granite massif, located in the South-Eastern Transbaikalia to the west of the Streltsovsky caldera, containing uranium deposits unique in their reserves was chosen as the object of the research. The massif is composed of Late Riphean granites and granite-gneisses, affected by dynamometamorphic and hydrothermal-metasomatic transformations in various degrees, and dissected by numerous faults with traces of fluid activity of various tectogenesis episodes. The interrelation between such geometrical parameters of fractures systems as specific density and specific length was established. It is shown that such geostructural data should be used for conceptual and numerical modeling of fluid filtration and radionuclides transport processes occurring in a three-dimensional fractured-pore space of crystalline rocks, as applied to the reconstruction and modeling of uranium ore formation and use of geological space for radioactive materials isolation.
Ore potential of granitic rocks of the Gargan block, Eastern Sayan
Authors: Efremov S. V. , Dril S. I. , Goryachev N. A. , Levitsky I. V.
Published: August 2019

Based on the analysis of modern genetic models, an algorithm for extracting the derivatives of potentially ore-bearing magmas among Precambrian rocks of the tonalite-trondhjemite-granodiorite associations (TTGA) is developed and tested. The algorithm is implemented as a sequence of geochemical criteria to identify the genetic nature of the sources of substance and on this basis to distinguish the products of melting of geochemical reservoirs enriched in Au and other ore elements. The proposed algorithm (a set of potential geochemical criteria of ore content) can be used for metallogenic zoning of TTGA rocks, within ancient cratons.
Tectonics of the Southern Ocean passive margins in the Africa – East Antarctica region
Authors: Melankholina E. N. , Sushchevskaya N. M.
Published: August 2019

Based on geological and geophysical data for the conjugate margins of Africa – East Antarctica, the peculiarities of preparation of the breakup central Gondwana supercontinent are discussed. When using the historical approach, a significant inheritance of the Middle-Upper Jurassic tectono-magmatic development from the preceding time is shown. The first location of tectono-magmatic activity in zones of weakness on the proximal margin, its subsequent migration to distal margins and further oceanic opening is established. The geochemical features of magmas of the region and their sources are under discussion. Evidence for the decisive influence of the Karoo-Mod plume on the development of magmatism is presented. A significant feature of the plume manifestation is considered: the presence of high-magnesian ferruginous picrites , formed by melting of a pyroxenite source with specific composition, coinciding with the central part of the plume and corresponding to the earliest eruptions. We determined the source of magmatism at the initial stage could have been the substance of a rising plume, and magmas reached the surface through existing fractures without interacting with the lithosphere. In the course of evolution, the admixture of pyroxenites in the source decreased and the melts acquired the features of the melting lithospheric mantle, which was reflected in the isotopic characteristics of the melts with a predominance of the enriched EM II component. The structure and magmatism of the Southern Ocean and South Atlantic are compared. Also discussed the locations of the Mesozoic Karoo-Maud and Tristan plumes, as well as the zones of the subsequent breakup of Gondwana, above the margin of the African superplume, indicating a relationship between surface and deep-seated events, is discussed.
Tibial Fracture in an Elderly Female Patient of Rheumatoid Arthritis: A Preventable Iatrogenic Injury
Authors: Samajdar Shambo Samrat , Mukherjee Shatavisa , Sen Sumalya , Tripathi Santanu
Published: August 2019

Oral systemic glucocorticoids widely used in the medical practice to treat various diseases like asthma, systemic connective tissue diseases, other autoimmune diseases and in transplantology, are considered the main cause of secondary and iatrogenic osteoporosis. The pathogenesis of glucocorticoid induced bone loss is multifactorial and complex. The exact mechanism remains undefined. The present report describes a case of 65 yr old female presenting with fracture in mid shaft of tibia after a very low velocity trauma. On medical history elicitation, she was found to be treated for rheumatoid arthritis with oral glucocorticoids. Causality, severity and preventability assessment was done for the reaction. Potentiality of glucocorticoids causing fractures is often neglected by professionals and ignored by patient and their caregivers. Given the potential for rapid bone loss with glucocorticoid therapy, frequent monitoring is warranted while bearing in mind that BMD is a surrogate marker for fracture risk and patients on glucocorticoids fracture at higher BMD than other patients. Once treatment is initiated, BMD should be monitored annually to ensure compliance and efficacy.
Vitamin D level predicts all-cause dementia
Authors: Greenblatt H. Karl , Adler Caleb , Aslam Muhammad , Welge Jeffrey , Krikorian Robert
Published: August 2019

BACKGROUND:

Vitamin D deficiency is common in Western societies and has been implicated in a number of health conditions including late-life dementia.

OBJECTIVE:

To assess whether vitamin D level is associated with all-cause dementia in late life.

METHODS:

This was a retrospective case control study using the electronic medical record of an urban medical center to obtain information on age, sex, body mass index, 25-hydroxy vitamin D (25-(OH)D) values, and presence of dementia diagnosis in patients 65 to 90 years old. We classified patients to quartiles according to vitamin D values and performed logistic regression analysis to determine associations between vitamin D quartiles and incidence of dementia diagnosis.

RESULTS:

Rates of all-cause dementia decreased with increasing levels of 25-(OH)D independent of age, sex, and BMI, factors that also predicted dementia. Vitamin D levels above 38 ng/mL were associated with the lowest rate of all-cause dementia.

CONCLUSIONS:

We observed dose-dependent, inverse associations of 25-hydroxy vitamin D levels with all-cause, late life dementia independent of age, sex, and BMI. There may be greater protection for supra-sufficient levels, a notion that warrants evaluation in controlled trials.
Cloning, expression, purification and interaction evaluation of 30 amino acids in C terminus of Clostridium perfringens toxin with its receptor Claudin-4
Authors: Huynh Quang Kien , Nguyen An Hoang , Pham Quynh Thi Mong , Nguyen Hoan Phuoc Khai , Tran Hieu Van
Published: August 2019

Oral vaccine is a strategy being the most interested about treatments of gastrointestinal infections because of many great benefits outweigh conventional injection vaccines. In order to resolve the dispersion of antigens in gastrointestinal surfaces, the immunological tolerance and also be capable to stimulate immune responses effectively, M cells are targeted for antigens delivery. A number of researches reported that 30 amino acids in C terminus of Clostridium perfringens toxin (CPE30) have a high affinity to Claudin-4 receptor presenting on M cells. It is highly indispensable to produce a resource for assessing of CPE30 binding ability so cpe30 gene was cloned into the pET-gfp plasmid by two restriction enzymes BamHI and NdeI on the E. coli DH5α strain. The expression and confirmation of the fusion protein CPE30-GFP which was induced by IPTG in E. coli BL21 (DE3) strain and assessed by SDS-PAGE and Western blot with 6xHis Taq antibody demonstrated that there was the over expression of CPE30 GFP fusion protein in the cytoplasm, mainly in the soluble form. Finally, CPE30-GFP was purified which the purity was approximately 92.3%. In vitro protein interaction measurement using silicon nanowire field-effect transistors (SiNW FETs) showed that CPE30-GFP had a good binding affinity with its receptor Claudin-4 (R4). This result laid the groundwork for the CPE30 interaction study with the M cell in vivo.
Flavanones from the rhizomes of Boesenbergia pandurata
Authors: Nguyen Hai Xuan , Le Phong Quang , Nguyen Mai Thi Thanh , Nguyen Nhan Trung
Published: August 2019

Boesenbergia pandurata (Roxb.) Schltr. is a perennial medicinal herb belonging to the Zingiberaceae family. It is cultivated in some tropical countries in Southeast Asia including Vietnam, Thailand, Myanmar, Indonesia and Malaysia. In Vietnam, it is known as "Ngai bun", and the fresh rhizomes are mainly used as a spice. This plant contains prenylated chalcones and other flavonoids as the major bioactive constituents. From the CHCl3 extract of Boesenbergia pandurata, we had isolated six flavanones. Their structures, pinocembrin (1), pinostrobin (2), alpinetin (3), di-Omethylpinocembrin (4), naringenin (5) and 5-Omethylnaringenin (6), were determined based on extensive spectroscopic analysis and in comparison with previous works.
Investigation of water absorption during the storage and effects of triethylamine (TEA) nhexanol in reducing phase separation of E5 and E10 biofuels
Authors: Hoang Nam Minh , Huynh Quyen , Huynh Thao Nguyen Phuong
Published: August 2019

In this study, water absorption of E5 and E10 were investigated under Ho Chi Minh City’s weather conditions. The effects of triethylamine (TEA) and n-hexanol on E5 and E10 phase separation were also reported. Data from this study implied that E5 and E10 biofuels were effectively stable for 90 days under Vietnam standard biofuels storage condition with no phase separation observed. The presence of TEA in these two biofuels showed the reduction of water absorption capacity of E5 and E10 during storage. Specifically, 0,15% (v/v) of TEA in E5 and E10 resulted approximately 50% reduction of water absorption capacity compared to E5 and E10 without TEA additives. Addition of 0,15% (v/v) of TEA and 1,5% (v/v) of n-hexanol in E10 resulted a higher water content of 11% for phase separation to occur, which was relatively higher than the current E10 under the same condition. Data conducted in this study suggested a positive and synergetic effect of TEA and n-hexanol on the stability of E5 and E10 under standard storage condition. This study proposed potential additives that could be used for improving Vietnam's biofuels standard.
MCM-41 mesoporous silica anoparticles and their adsorption for targeting drug delivery systems
Authors: Dau Nguyet Tran Anh , Le Hieu Van , Tran Van Thi Thanh
Published: August 2019

MCM-41 mesoporous silica nanoparticles were successfully synthesized by the condensation of tetraorthosilicate precursor (TEOS) using cetyltrimethylammonium bromide (CTAB) as the orientation substance in alkaline (pH = 9–12), deionized water as solvent. The samples were calcinated at 550°C for 5 hours. The structural characteristics of samples were analyzed by using Small angle X-ray diffraction, transmission electron microscopy (TEM), FT-IR and isothermal adsorption of nitrogen. Optimizing the fabrication parameters, MCM-41 particles have been obtained with a spherical shape, size of 80-140 nm, pore diameter of 2–5 nm and surface area (BET) of 986,683 m2g-1. Rhodamine B adsorption of MCM-41 showed that the maximum adsorption capacity value was 299,696 mg/g, suggesting the potential of this material to design of controlled drug delivery systems.
The Effect of Green Architecture on Human Health
Authors: Sedaghati Rohollah , Hosseynzadeh Kashi Mahdi
Published: August 2019

Increasing urbanization and population influx into cities has increased congestion and thus increased non-normative construction in the urban environment. Increased construction leads to further degradation of the green environment, Gardens, and pristine spaces, which are the main respiratory source of the city's environment and urban people. This extensive environmental degradation Has increased the pollution of cities. The present study attempts to investigate the human need for green architecture and its effects on the modern human environment and the possibility of integrating green architecture with environmental psychology in order to more appropriately and accurately respond to mental and psychological needs.
Green Synthesis of Gold Nanoparticles using Adina Cordifolia Bark Extract and its Antimicrobial and in Vitro Anticancer Study
Authors: C Kotval Shaileshkumar
Published: August 2019

In this study, green synthesis of gold nanoparticles were success fully synthesised by using Adina cordifolia plant bark aqueous extract which provides eco-friendly process, an environmentally benign, easy and proficient way for the synthesis of gold nanoparticles. The smaller size of gold nanoparticles have research on various dieses are very important. The green synthesized gold nanoparticles were characterized by UV-Visible spectroscopy, FT-IR, XRD, SEM, TEM and their antimicrobial activity was investigated. From UV-Visible spectrophotometer result was confirmed the formation of gold nanoparticles by color changed to ruby red color from pale yellow color indicates the reduction of Au3+ ions to Auo. The antibacterial activity for the synthesized gold nanoparticles was confirmed by the antibacterial activity experiment against Bacillus subtilis and Escherichia coli by agar well method. The synthesized AuNPs was performed anticancer activity against MCF-7 breast cancer cell line. Compared to Adriamycin, Positive Control Compound AuNPs exhibited potent anticancer activity with the IC50. The green synthesized gold nanoparticles proved to be potential candidates for medical application antimicrobial and anticancer activity is highly essential.
Peran Permainan Pohon Angka dalam menstimulasi Pengetahuan Visual Mengenal Angka 1-10 pada Anak Usia 4-5 Tahun
Authors: Firmansah Muhammad Lukman Haris
Published: August 2019

ABSTRAK : Pertumbuhan dan perkembangan anak distimulasi dengan berbagai macam jenis permainan. Pohon angka merupakan salah satu permainan yang sering digunakan dalam pembelajaran. Minim pengetahuan fasilitator mengenai keunggulan dan kelemahannya, sehingga pada kesempatan ini peneliti melakukan penelitian mengenai pohon angka. Hasil dari penelitian ini diperoleh dengan cara wawancara dan observasi, selanjutnya dilakukan analisis menggunakan metode trianggulasi data untuk mendapatkan data yang valid. Hasil instrumen pengamatan yakni 72% anak dapat mengambil angka, 82% anak dapat menempelkan angka, 85% anak dapat menunjukkan angka. Stimulus yang ciptakan melalui permainan pohon angka yakni melihat lambang angka secara berulang-ulang dimulai proses mengambil, menempelkan, menunjukkan dan menyebutkan angka
ABSTRACT : Child growth and development are stimulated by various types of games. Number tree is one game that is often used in learning. Lack of facilitator's knowledge of their strengths and weaknesses, so that on this occasion researchers conducted research on numerical trees. The results of this study were obtained by means of interviews and observations, then analyzed using the data triangulation method to obtain valid data. The result of the observation instrument is that 72% of children can take numbers, 82% of children can attach numbers, 85% of children can show numbers. Stimulus, which is created through numerical tree play that is to see the symbol of numbers repeatedly begins the process of taking, pasting, showing and mentioning numbers.
Indonesia Industrial Productivity Growth: Evidence of Re-industrialization or De-industrialization?
Authors: Sugiharti Lilik , Purwono Rudi , Primanthi Martha Ranggi , Esquivias Miguel Angel Padilla
Published: August 2019

This study employs a Stochastic Frontier Analysis to decompose Total Factor Productivity for the manufacturing corridor of Indonesia. Technological progress, technical efficiency change, and scale effects are captured at a firm level covering all Java provinces from 2007 to 2013. The period is of particular interest as it covers the efforts of re-industrialization under the Master Plan for Acceleration of Indonesian Economy (MP3EI) and the sharp increase-decrease in global demand and global prices. The study captures sources of productivity growth supporting/deterring output growth, differentiating across firm characteristics based on size (large and medium), technology intensity, skill intensity, location (province), and capital-output ratio employed in production. As firms differ in the five elements, productivity and efficiency performance also differ. This paper questions whether productivity growth is limited to conventional sources -input growth and technological progress-, or if manufacturing is managing some gains through non-conventional channels -technical efficiency and scale effects. The paper also questions the presence of patterns in productivity among group firms (characteristics), finding that firms which combine a low-tech level, a higher skill ratio, and are medium in scale reported TFP at least 70 % higher than the average firm. Combinations of firm size, technology, skills, and ratio output affect the performance. Cost analysis of factors of production is also carried out, finding that energy is canceling out possible gains in scale effects by rising disproportionately both in consumption and prices. TFP growth was found to be negative and falling, raising the possibility of a path towards de-industrialization.
Charter Cities: Development Model or Neocolonialism?
Authors: Van de Sand Tillman
Published: August 2019

Facing the problems of corruption, inefficient bureaucracy, a lack of property rights or of the rule of law in developing countries, Paul Romer, the current Chief Economist of the World Bank, has chosen a radical approach when he provided advice to the Honduran government in 2010. His idea was to establish a new constitution of the regional administrations and the legal framework in areas of developing countries where no settlements exist. To establish such a special administrative region, so called Charter City, a developing country requires a partner country which already enjoys credibility in terms of a functional administrative order. A high level of trust is presupposed, because the Charter City will be highly independent from the state ruling government. In fact Romer assumes that it is far easier to establish a new framework under the condition of good governance in a region which will attract citizens and investors than to change an existing system. Certainly the possibilities of a far-reaching independence contain some fundamental problems at the same time. The cultural heritage of a society and the country-specific characteristics might oppose the new order. Even when no one should be forced to live in a Charter City such problems will occur, because not only the region will change but also the rest of the country will be affected in the long term. In this context the activities of a partner country could be seen as an act of paternalism. The paper deals with the theoretical background of trust and compatibility in international administrative cooperation such as Charter Cities.
From Computational Thinking to Political Resistance
Authors: Aghasaleh Rouhollah , Enderle Patrick , Puvirajah Anton
Published: August 2019

Working with Latinx adolescents and providing informal learning experiences through a voluntary after school program aimed at developing their computational thinking and competencies, discussions around the election of Donald Trump emerged as it was important for many students. Emergent bilinguals internalized the xenophobic discourse that was amplified during the presidential election season. Thus, students feared deportation, discrimination, and other forms of violence. Many students experienced their friends and families facing deportation due to the increased Immigration and Customs Enforcement raids that occurred in 2016. The after-school program was a safe space in which we could provide a constructive and creative environment for students to comfortably explore these topics. In this paper, drawing on three pre-service teachers’ reflections, we explore how middle school urban Latinx students navigated their oppressors through computational thinking and show case a model of a critical pedagogy in an informal science education.
PENGEMBANGAN LKPD IPA BERBASIS SERVICE LEARNING UNTUK MENINGKATKAN KEMAMPUAN REFLECTIVE THINKING SISWA
Authors: Setiawati Nindya Puri , Karyadi Bhakti , Primairyani Ariefa
Published: August 2019

Penelitian ini bertujuan mengetahui kerangka dan kelayakan LKPD IPA berbasis service learning menurut dosen ahli dan praktisi, serta mengetahui reflective thinking peserta didik setelah belajar dengan menggunakan LKPD IPA berbasis service learning. Jenis penelitian ini adalah Research and Development dengan metode 1) Tahap analisis, 2) perancangan, 3) pengembangan dan produksi, 4) implementasi, dan 5) evaluasi. Data dianalisis secara deskriptif yaitu hasil pengembangan LKPD IPA materi dampak pencemaran lingkungan terdiri atas kerangka umum yang berisi halaman judul, kompetensi, tujuan pembelajaran, peta konsep, dan lembar kegiatan, serta  kerangka isi berisi judul, tujuan kegiatan, pengantar materi, alat dan bahan, langkah kerja, tabel dan gambar, pertanyaan diskusi, kesimpulan, dan kolom refleksi. Hasil penilaian validasi dari tim dosen ahli dan praktisi dilihat dari aspek kelayakan isi, kebahasaan, penyajian, dan kegrafikan memberikan hasil 94,75% sehingga bahan ajar LKPD IPA berbasis service learning yang dikembangkan memiliki kelayakan dengan kategori sangat baik. Hasil pretest-posttest kemampuan reflective thinking peserta didik sebelum dilakukan uji coba LKPD dan setelah peserta didik belajar dengan semua LKPD menunjukkan adanya peningkatan dengan rerata skor 61,4 berkategori kurang menjadi 79,4 berkategori cukup. Berdasarkan penilaian skor hasil tes pretest-posttest kemampuan reflective thinking maka peserta didik telah memiliki kemampuan reflective thinking. Kata kunci : Reflective Thinking, LKPD, Service Learning
STUDI ETNOBOTANI TUMBUHAN OBAT SUKU SERAWAI SEBAGAI PENGEMBANGAN HANDOUT BIOLOGI KELAS X SMA
Authors: Handini Melda Nuari , Kasrina Kasrina , Irawati Sri
Published: August 2019

Penelitian ini merupakan jenis penelitian dan pengembangan (Research and Development). Penelitian telah dilakukan dari desember 2017 hingga April 2018 di Desa Tumbuan Kabupaten Seluma dan Uji Keterbacaan dilakukan di MAN Tumbuan Seluma. Penelitian ini bertujuan untuk :  (1) Mengetahui jenis-jenis tumbuhan obat yang dimanfaatkan oleh masyarakat Suku Serawai di desa Tumbuan Kabupaten Seluma, (2) mendeskripsikan desain handout biologi materi Plantae berdasarkan studi etnobotani tumbuhan obat Suku Serawai desa Tumbuan Kabupaten Seluma. Penelitian ini dilakukan dengan 7 tahap penelitian, yaitu : (1) Potensi dan Masalah, (2) Pengumpulan data, (3) Desain Produk, (4) Validasi Desain , (5) Revisi Desain, (6) Uji Keterbacaan dan (7) Revisi Desain. Berdasarkan hasil penelitian studi etnobotani diperoleh data tumbuhan obat suku Serawai di desa Tumbuan sebanyak 90 spesies yang berasal dari 49 famili. Data tumbuhan obat selanjutnya dikembangkan menjadi bahan ajar berupa handout biologi tumbuhan obat Suku Serawai. Hasil penilaian dan validasi tim ahli terhadap bahan ajar yang dikembangkan menunjukkan skor rata-rata 82,67 dengan kategori sangat valid (86,11%). Uji keterbacaan handout oleh peserta didik menunjukkan rata-rata skor 35,54 dengan kategori sangat baik  (88,85 %). Berdasarkan skor hasil validasi oleh ahli dan uji keterbacaan peserta didik, dapat disimpulkan bahwa handout biologi yang dikembangkan sangat valid dan baik untuk menjadi bahan ajar guru.Kata Kunci : Handout, Studi Etnobotani, Suku Serawai, Tumbuhan Obat
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK MATERI VERTEBRATA KELAS X BERDASARKAN INVENTARISASI IKAN LAUT
Authors: Fajri Aziza , Rahman Abdul , Yani Ariefa Primair
Published: August 2019

Penelitian ini bertujuan untuk mengetahui kelayakan Lembar Kerja Peserta Didik (LKPD) yang dikembangkan berdasarkan inventarisasi ikan laut di provinsi Bengkulu. Subjek penelitian ini adalah peserta didik kelas X MIPA2 Sekolah Menengah Atas (SMA) Negeri 9 Kota Bengkulu. Teknik pengumpulan data pada penelitian ini adalah angket (kuisioner). Instrumen yang digunakan adalah lembar angket (kuisioner) untuk tiga orang validator (dua orang Dosen Program Studi Pendidikan Biologi dan guru Biologi SMA kelas X), dan lembar keterbacaan untuk peserta didik. Berdasarkan hasil validasi oleh validator, LKPD yang disusun memperoleh nilai aspek materi 89% dan aspek kebahasaan 91% (kategori sangat layak) oleh para validator. Desain LKPD ini juga dikatakan layak (nilai 96%) dalam uji keterbacaan oleh 27 orang peserta didik di SMAN 09 Kota Bengkulu. Berdasarkan hasil tersebut dinyatakan bahwa desain LKPD yang disusun layak digunakan sebagai bahan ajar materi vertebrata kelas X tingkat SMA.Kata Kunci: Pengembangan LKPD, inventarisasi, ikan laut.
PENINGKATAN HASIL BELAJAR MELALUI MODEL KOOPERATIF TIPE JIGSAW PADA PESERTA DIDIK SMPN 3 KAUR
Authors: Herviza Meftha , Jumiarni Dewi , Irawati Sri
Published: August 2019

Penelitian ini bertujuan untuk mendeskripsikan aktivitas guru dan aktivitas peserta didik serta untuk mengetahui hasil belajar peserta didik melalui penerapan model pembelajaran kooperatif tipe Jigsaw. Jenis penelitian yang digunakan yaitu penelitian tindakan kelas dengan metode deskriptif. Penelitian ini dilakukan dalam dua siklus dengan tahapan, yaitu perencanaan, pelaksanaan, pengamatan, dan refleksi. Subjek penelitian adalah guru peneliti dan peserta didik kelas VIII 1 SMPN 3 Kaur Tahun ajaran 2017/2018 yang berjumlah 28 orang yang terdiri dari 19 orang perempuan dan 9 orang laki-laki. Instrumen penelitian yang digunakan adalah lembar observasi untuk mengetahui aktivitas guru dan aktivitas peserta didik, serta lembar tes untuk mnegetahui hasil belajar peserta didik. Hasil analisis data observasi aktivitas guru pada siklus I diperoleh skor rata-rata 31,5 (baik) dan pada siklus II meningkat menjadi 34,5 (baik). Untuk analisis data observasi aktivitas peserta didik pada siklus I diperoleh skor rata-rata 29 (baik) dan pada siklus II meningkat menjadi 35 (baik). Sedangkan untuk presentase ketuntasan belajar  klasikal peserta didik pada siklus I adalah 50% dengan rata-rata kelas 68,93% (belum tuntas) pada siklus II mengalami peningkatan menjadi 85,71% dengan nilia rata-rata kelas yang juga meningkat 79,64% (tuntas). Jadi dapat disimpulkan bahwa penerapan model kooperatif tipe Jigsaw dapat meningkatkan aktivitas guru dan peserta didik serta meningkatkan hasil belajar peserta didik kelas VIII 1 SMPN 3 Kaur.Kata kunci: Model Kooperatif, Jigsaw, Hasil belajar
PENGEMBANGAN LEMBAR KEGIATAN PESERTA DIDIK UNTUK MENILAI UPAYA KONSERVASI KURA-KURA
Authors: Sari Intan Indah , Ruyani Aceng , Yani Ariefa Primair
Published: August 2019

Tujuan penelitian ini adalah menganalisis kelayakan pengembangan Lembar Kegiatan Peserta Didik (LKPD) konservasi kura-kura pada materi identifikasi ancaman populasi dan menilai upaya konservasi. Metode penelitian adalah kuantitatif deskriptif. Penilaian perilaku konservasi peserta didik menggunakan angket konservasi kura-kura diberikan pada pembelajaran dengan strategi indoor-outdoor. Hasil penelitian menunjukkan bahwa validasi LKPD pengembangan dengan  persentase 92,5% memiliki kriteria “sangat valid” dan terjadi peningkatan  perilaku konservasi kura-kura peserta didik sebesar 27,03 %. Kesimpulan dari hasil penelitian ini adalah LKPD pada materi identifikasi ancaman populasi hasil pengembangan sangat layak diujicoba dan efektif untuk meningkatkan upaya konservasi kura-kura bagi peserta didik.Kata kunci: Kura-kura Sumatera, lembar kerja peserta didik
PENERAPAN MODEL PROBLEM BASED LEARNING PADA MATERI FOTOSINTESIS SEBAGAI UPAYA MENINGKATKAN HASIL BELAJAR SISWA KELAS VIIIA SMPN 2 LEBONG UTARA
Authors: Nurfiyanti Putri Endah , Yennita Yennita , Jumiarni Dewi
Published: August 2019

Penelitian ini bertujuan untuk mendeskripsikan aktivitas guru, aktivitas siswa dan hasil belajar dengan model Problem Based Learning (PBL) dikelas VIIIA SMPN 2 Lebong Utara. Jenis penelitian ini adalah PTK dengan metode deskriptif. Penelitian ini terdiri dari 2 siklus, tiap siklus terdiri dari 4 tahap yaitu: perencanaan, pelaksanaan, pengamatan dan refleksi. Subyek penelitian adalah guru dan seluruh siswa kelas VIIIA SMPN 2 Lebong Utara. Variabel penelitian ini adalah model Problem Based Learning (PBL), aktivitas guru, aktivitas siswa, dan hasil belajar. Teknik pengumpulan data dalam penelitian ini yaitu observasi dan tes. Instrumen penelitian yang digunakan yaitu lembar observasi dan lembar tes. Pada siklus I aktivitas guru diperoleh skor rata-rata yaitu 27 (Baik) dan pada siklus II skor aktivitas guru menjadi 29 (Baik). Pada siklus I aktivitas siswa diperoleh skor yaitu 25,5 (Baik) dan pada siklus II skor aktivitas siswa menjadi 29 (Baik). Hasil analisis persentase ketuntasan belajar siswa pada siklus I yaitu 65% (tidak tuntas) dan pada siklus II meningkat menjadi 85% (tuntas). Dari hasil penelitian dapat disimpulkan bahwa model Problem Based Learning dapat meningkatkan aktivitas guru, aktivitas siswa dan hasil belajar siswa kelas VIIIA SMPN 2 Lebong Utara.Kata Kunci : Problem Based Learning, Aktivitas, Hasil Belajar
PENGEMBANGAN LEMBAR KEGIATAN PESERTA DIDIK BERDASARKAN KERAGAMAN TUMBUHAN OBAT SUKU LEMBAK DELAPAN KECAMATAN TALANG EMPAT KABUPATEN BENGKULU TENGAH
Authors: Deta Weka Septiara , Yani Ariefa Primair , Kasrina Kasrina
Published: August 2019

Penelitian ini bertujuan untuk (1). Mengetahui jenis-jenis tumbuhan obat yang dimanfaatkan oleh masyarakat Suku Lembak Delapan di Desa Kembang Seri dan Tengah Padang Kecamatan Talang Empat Kabupaten Bengkulu Tengah; (2). Membuat desain Lembar Kegiatan Peserta Didik (LKPD) materi keanekaragaman hayati SMA kelas X berdasarkan keragaman tumbuhan obat di Desa Kembang Seri dan Tengah Padang Kecamatan Talang Empat Kabupaten Bengkulu Tengah. Hasil studi etnobotani di desa Kembang Seri dan Tengah Padang didapatkan 70 spesies dari 42 famili tumbuhan yang dimanfaatkan sebagai bahan obat. Famili yang paling banyak digunakan adalah Euphorbiaceae dan Zingiberacea. Desain LKPD yang disusun dikategorikan sangat valid oleh validator dengan nilai persentase sebesar 88,8%. Hasil uji keterbacaan LKPD terhadap 15 orang peserta didik kelas X menunjukkan nilai presentase 89,4% dengan krtiteria sangat valid. Berdasarkan nilai validasi dari ahli dan uji keterbacaan peserta didik dapat disimpulkan bahwa LKPD yang dikembangkan sangat layak digunakan sebagai bahan ajar di sekolah pada sub materi keanekaragaman jenis kelas X SMA.Kata Kunci: Lembar kegiatan peserta didik, tumbuhan obat, Suku Lembak Delapan
PENERAPAN VARIASI MODIFIKASI BOLA KARET UNTUK MENINGKATKAN KETERAMPILAN SERVIS BAWAH SEPAK TAKRAW
Authors: Saputra Homarul Ashabi , Yarmani Yarmani , Sugihartono Tono
Published: August 2019

Penelitian ini bertujuan untuk mengetahui penerapan variasi modifikasi bola karet untuk meningkatkan keterampilan servis bawah sepak takraw. Jenis penelitian ini adalah Penelitian Tindakan Kelas dengan jumlah subjek adalah 35 orang siswa. Hasil penelitian ini menyimpulkan (1) Penerapan variasi modifikasi bola karet dalam pembelajaran PJOK dapat meningkatkan keterampilan siswa kelas X MA AL-Kariim Kabupaten Bengkulu Tengah dalam melakukan servis bawah sepak takraw. Pada Pra siklus menunjukkan nilai rata-rata yang diperoleh yaitu 45,4 dengan persentase ketuntasan 28,5% dan jumlah siswa tuntas 10. Selanjutnya pada siklus 1 nilai rata-rata yang diperoleh yaitu 61,4 dengan persentase ketuntasan 60% dan jumlah siswa yang tuntas 21. Kemudian pada siklus 2 nilai rata-rata yang diperoleh yaitu 78 dengan persentase ketuntasan 85,7% dan jumlah siswa yang tuntas 30. (2) Penerapan variasi modifikasi bola karet dalam pembelajaran PJOK dapat meningkatkan aktivitas guru dan siswa dalam proses pembelajaran di kelas X MA AL-Kariim Kabupaten Bengkulu Tengah.Kata Kunci: Sepak Takraw, Variasi Modifikasi Bola, Servis Bawah
PROFIL KONDISI FISIK PEMAIN SEPAK BOLA SMA NEGERI 1 KAUR
Authors: Adziman Leo , Arwin Arwin , Syafrial Syafrial
Published: August 2019

Penelitian ini bertujuan untuk mengetahui kondisi fisik pemain sepak bola SMA Negeri 1 Kabupaten Kaur. Kondisi fisik pemain sangatlah penting untuk mencapai prestasi yang maksimal. Penelitian ini merupakan penelitian survei dengan desain deskriptif. Subyek dari penelitian ini adalah seluruh pemain sepakbola SMA Negeri 1 Kabupaten Kaur, yaitu yang berjumlah 20 orang. Dalam penelitian ini menggunakan tes untuk mengetahui daya tahan, kecepatan, kelincahan dan kelentukan kaitanya dengan kondisi fisik pemain sepakbola. Teknik pengumpulan data menggunakan teknik tes dan pengukuran kondisi fisik. Instrumen dalam penelitian ini meliputi tes Lari 1200 yard, lari 60 yard, shuttle run, dan sit and reach.. Teknik analisis data yang digunakan dalam penelitian ini adalah dengan perhitungan statistik menggunakan analisis deskriptif persentase. Hasil penelitian yang diperoleh bahwa kondisi fisik keseluruhan pemain sepakbola SMA Negeri 1 Kabupaten Kaur adalah kurang. Dari 4 item tes yang dilaksankan, ternyata kondisi fisik pemain sepakbola SMA Negeri 1 Kaur semuanya memperoleh kategori kurang, kecuali pada tes sit and reach yang memperoleh kategori sedang.Kata Kunci: Kondisi fisik, Pemain Sepakbola.
KONTRIBUSI KEMAMPUAN BACKHAND DAN FOREHAND DRIVE KEDINDING TERHADAP KEMAMPUAN BERMAIN TENIS MEJA MAHASISWA PJKR FKIP UNIVERSITAS BENGKULU
Authors: Lestari Puji , Sutisyana Ari
Published: August 2019

Penelitian ini bertujuan untuk mengetahui berapa besar sumbangsih kemampun backhand drive terhadap kemampuan bermain, kemampuan forehand drive terhadap kemampuan bermain dan kontribusi kemampuan backhand dan forehand Drive terhadap kemampuan bermain tenis meja. Metode penelitian yang digunakan berbentuk korelasional. Populasi dalam penelitian ini adalah mahasiswa PJKR. Sampel penelitian sebanyak 40 orang diambil 10 orang tiap masing kelas. Instrument tes yang digunakan yaitu tes Backhand,Forehand drive, dan Kemampuan bermain. Teknik Pengumpulan data penelitian menggunakan tes, Teknik analisis data menggunakan Kontribusi. Penelitian dilakukan di Kampus PJKR FKIP UNIB Berdasarkan hasil penelitian diketahui Kemampuan backhand drive (X1) terhadap kemampuan bermain (Y) = 0,42. Kemampuan forehand drive (X2) terhadap kemampuan bermain (Y) 0,46 dan Kemampuan backhand (X1) dan forehand drive (X2) terhadap kemampuan bermain (Y) 0,46 Kontribusi Kemampuan Backhand dan Forehand drive dengan kemampuan bermain sebesar (21,16 %).Kata kunci: Kontribusi, Mahasiswa PJKR
PENGARUH METODE LATIHAN TEKNIK DISTRIBUSI TERHADAP KETERAMPILAN DRIBBLING ZIG – ZAG PERMAINAN FUTSAL
Authors: Siswandi Ekkry , Yarmani Yarmani , Sihombing Santun
Published: August 2019

Penelitian ini bertujuan untuk mengetahui pengaruh metode latihan teknik distribusi terhadap keterampilan dribbling zig – zag secara ilmiah. Dalam penelitian ini ada dua kelompok yaitu kelompok eksperimen (perlakuan) dan kontrol yang tidak diberikan perlakuan. Populasi dalam penelitian ini adalah siswa ektrakurikuler SMP Negeri 12 Kota Bengkulu pada tahun 2017. Analisis statistic yang digunakan dalam penelitian ini adalah Uji t. Adapun hasil analisis Uji t hasil perhitungan antara tes awal dan tes akhir pada kelompok eksperimen (perlakuan) terdapat pengaruh yang signitifikan. Hasil perhitungan menyatakan bahwa harga thitung = 8,95 ? ttabel = 2,160 dengan taraf ? = 0,05, maka Ho ditolak dan Ha diterima artinya terdapat pengaruh yang signifikan antara X (Metode latihan teknik distribusi) dengan Y (Keterampilan Dribbling Zig – zag). Kontribusi metode latihan teknik distribusi terhadap keterampilan driblling zig – zag yaitu K = r2 x 100% = 75,69%. Sehingga dapat disimpulkan bahwa adanya kontribusi antara metode latihan teknik distribusi terdahap keterampilan dribbling zig –zag yaitu sebesar 75,69%.Kata Kunci : Metode Latihan, Teknik Distribusi, Dribbling Zig – Zag.
ANALISIS TENDANGAN SABIT PADA PERGURUAN PENCAK SILAT TAPAK SUCI DI KOTA BENGKULU
Authors: Marlianto Fani , Yarmani Yarmani , Sutisyana Ari
Published: August 2019

Penelitian ini bertujuan untuk mengetahui tendangan sabit seluruh perguruan pencak silat Tapak Suci di Kota Bengkulu. Penelitian ini menggunakan metode penelitian desktiptif kualitatif. Dalam penelitian ini yang menjadi subyek penelitian adalah siswa perguruan pencak silat tapak suci yang mendapatkan hasil yang sama pada tiga belas indikator mengenai tendangan sabit pada pada perguruan pencak silat Tapak Suci di Kota Bengkulu. Hal ini tentunya menunjukan bahwa tendangan sabit pada perguruan pencak silat Tapak Suci semuanya mempunyai langkah dan gerakan yang sama. Sedangkan untuk analisis data berdasarkan tes kemampuan tendangan sabit mengambil objek pada ke tiga puluh (30) siswa perguruan tapak suci Kota Bengkulu.Hasil yang diperoleh dari tigapuluh (30) siswa dengan waktu 10 detik sehingga diperoleh berapa banyaknya tendangan sabit yang di dapatkan .skor sebesar 25-ke atas termasuk dalam kategori baik sekali sebanyak dua (2) orang atau sebesar 6,67%, pada skor 20-24 yang termasuk dalam kategori baik sebanyak delapan belas (18) orang atau sebesar 60%, untuk skor 17-19 di dalam kategori Cukup sebanyak 10 orang atau sebesar 33%, untuk 15-16 di dalam kategori kurang tidak ada atau sebesar 0 %. Dan untuk kategori kurang sekali dengan skor 14-ke bawah juga tidak ada atau sebesar 0 %. Berdasarkan hasil analisis tersebut dapat disimpulkan bahwa kemampuan tendangan sabit yang dimiliki oleh siswa perguruan pencak silat Tapak Suci di Kota Bengkulu masuk dalam rata-rata kategori baik dengan persentase 60 %Kata kunci: Tendangan Sabit, Tapak Suci, Kota Bengkulu