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  • 1
    Online Resource
    Online Resource
    Guided Discovery Problem-Posing: An Attempt to Improve Science Process Skills in Elementary School
    Modestum Ltd ; 2020
    In:  International Journal of Instruction Vol. 13, No. 3 ( 2020-07-01), p. 75-88
    Details
    In: International Journal of Instruction, Modestum Ltd, Vol. 13, No. 3 ( 2020-07-01), p. 75-88
    Type of Medium: Online Resource
    ISSN: 1694-609X , 1308-1470
    URL: Article
    DOI: 10.29333/iji.2020.1336a
    Language: Unknown
    Publisher: Modestum Ltd
    Publication Date: 2020
    detail.hit.zdb_id: 2421644-6
    SSG: 5,3
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  • 2
    Online Resource
    Online Resource
    Relationships between of Sea Urchins Abundance, Macroalgae and Coral Closure on the Cemara Kecil island
    IOP Publishing ; 2018
    In:  Journal of Physics: Conference Series Vol. 1025 ( 2018-05), p. 012038-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 1025 ( 2018-05), p. 012038-
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/1025/1/012038
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 2166409-2
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  • 3
    Online Resource
    Online Resource
    The Effect of Two Stay Two Stray and Think Pair Share Techniques on Students’ Speaking Skills at Grade XI of Madrasah Aliyah Swasta Al Manaar
    Sciedu Press ; 2023
    In:  World Journal of English Language Vol. 13, No. 3 ( 2023-02-02), p. 37-
    Details
    In: World Journal of English Language, Sciedu Press, Vol. 13, No. 3 ( 2023-02-02), p. 37-
    Abstract: This investigation tries to ascertain The Effects of the Two Stay Two Stray and Think Pair Share Techniques on Class XI Students at Al-Manaar Private Madrasah Aliyah's Speaking Skills The goal of this study was to ascertain and evaluate the impact of the Two Stay Two Stray and Think Pair Share Techniques on the Speaking Skills of Class XI Students at Madrasah Aliyah Al-Manaar Private. It is a quantitative form of study. Pre-test, post-test, control group design describes the research methodology used in this study. Students in class XI at Madrasah Aliyah Al-Manaar Private made up the population of this study. The class XI 2 MIA 25 students who were chosen for the study's sample using non-purposive sampling served as the study's sample population. employing essay tests as a data collection method. Testing is divided into two tests, namely pre-test and post-test. They were carried out to find out the students' speaking skills before and after receiving treatment. This study uses the Man Whitney and Kruskal Wallis formulas to analyze research data. The results show that Mean TPS 〉 Mean TSTS or 26.56 〉 14.24. This means that Ha is accepted and H0 is rejected, "there is a significant difference between the average Two Stay Two Stray and Think Pair Share techniques on students' speaking skills". The calculation results of the three groups obtained the value of H = 291 and H table = 101 which means that H0 is rejected and Ha is accepted, meaning that "there is a significant effect between Two Stay Two Stray and Think Pair Share on students' speaking abilities.
    Type of Medium: Online Resource
    ISSN: 1925-0711 , 1925-0703
    URL: Article
    DOI: 10.5430/wjel.v13n3p37
    Language: Unknown
    Publisher: Sciedu Press
    Publication Date: 2023
    detail.hit.zdb_id: 2635437-8
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  • 4
    Online Resource
    Online Resource
    The nanomolar affinity of C-phycocyanin from virtual screening of microalgal bioactive as potential ACE2 inhibitor for COVID-19 therapy
    Elsevier BV ; 2023
    In:  Journal of King Saud University - Science Vol. 35, No. 3 ( 2023-04), p. 102533-
    Details
    In: Journal of King Saud University - Science, Elsevier BV, Vol. 35, No. 3 ( 2023-04), p. 102533-
    Type of Medium: Online Resource
    ISSN: 1018-3647
    URL: Article
    DOI: 10.1016/j.jksus.2022.102533
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2023
    detail.hit.zdb_id: 2514731-6
    SSG: 11
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  • 5
    Online Resource
    Online Resource
    The potential stocks and carbon uptake by seagrass meadows at Pari Island, Kepulauan Seribu, Indonesia
    IOP Publishing ; 2020
    In:  IOP Conference Series: Earth and Environmental Science Vol. 530, No. 1 ( 2020-07-01), p. 012022-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 530, No. 1 ( 2020-07-01), p. 012022-
    Abstract: The development of human civilization during the last century has increased carbon dioxide content in nature that will contribute to global climate change. However, ocean water will reduce this increase by absorbing CO 2 . The increasing CO 2 content in the ocean could decrease pH and carbonate ion, which will have negative impacts on the life of marine organisms, food production and human life. Seagrass meadows through photosynthetic processes could absorb CO 2 and store carbon in large amounts for an extended period. This process could be the strategic way of resolving global climate change. The purpose of this research was to identify the species of seagrass, quantify the density and coverage of seagrass, and calculate biomass and carbon stock in seagrass meadows at Pari Island, Kepulauan Seribu. The research was carried out in February 2019. This research used quantitative field observation with the purposive sampling method. Samples were collected from 3 locations with nine stations. The obtained samples were analyzed at the Laboratory of Faculty of Fisheries and Marine Science, Diponegoro University. Carbon and sediment samples were analyzed using Loss in the Ignition (LOI) method. The results showed that there are three species of seagrass in Pari Island, i.e. Enhalus acoroides, Thalassia hemprichii , and Cymodocea rotundata. Total density value was 129.19 individual m −2 and total coverage value was 62.59%. Total stock potential of carbon value in Pari Island was 87.80 ton per ha with total area of seagrass meadows of 3.48 ha. Silty-sands mainly dominated sediment textures. It can be concluded that seagrass meadows are potential habitats to control CO 2 concentration in coastal waters and to hold the rate of climate change.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/530/1/012022
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2434538-6
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  • 6
    Online Resource
    Online Resource
    Zero-Energy Cool Chamber in Anthracnose Disease Management of Postharvest Capsicum frutescens
    The Indonesian Phytopathological Society ; 2021
    In:  Jurnal Fitopatologi Indonesia Vol. 17, No. 3 ( 2021-07-25), p. 83-91
    Details
    In: Jurnal Fitopatologi Indonesia, The Indonesian Phytopathological Society, Vol. 17, No. 3 ( 2021-07-25), p. 83-91
    Abstract: Anthracnose caused by Colletotrichum gloeosporioides is one of important diseases causing postharvest losses on chili. This study aimed to determine the effectiveness of the zero energy cool chamber (ZECC) in reducing the severity of anthracnose in Capsicum frutescens L. and extending the shelf life of chilies. The research was started by designing and building ZECC as a storage area for chilies. Chilies with and without fungal inoculation were stored in ZECC and storage chamber at room temperature. C. gloeosporioides experienced a growth inhibition of 40.48% after being stored in ZECC compared to its growth at room temperature. Storage of chilies in ZECC was able to reduce the severity of anthracnose by 56.2% on the 15th day, did not affect vitamin C content and total dissolved solids (TSS) and was able to reduce chilies weight loss during storage. Based on the organovisual test using the visual quality rating method and the Hedonic sensory test, consumers prefer chilies stored in the ZECC. The results showed that storage in ZECC could extend the shelf life of chilies. This storage model does not use electricity or is zero energy so it can be used by small scale farmers. This is the first report on the use of ZECC for the management of anthracnose in postharvest chilies in Indonesia.
    Type of Medium: Online Resource
    ISSN: 2339-2479 , 0215-7950
    URL: Issue
    URL: Article
    DOI: 10.14692/jfi.17.3
    DOI: 10.14692/jfi.17.3.83-91
    Language: Unknown
    Publisher: The Indonesian Phytopathological Society
    Publication Date: 2021
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  • 7
    Online Resource
    Online Resource
    Interaksi Meloidogyne incognita dan Fusarium solani pada Penyakit Kuning Lada
    Universitas Gadjah Mada ; 2018
    In:  Jurnal Perlindungan Tanaman Indonesia Vol. 21, No. 2 ( 2018-01-08), p. 127-
    Details
    In: Jurnal Perlindungan Tanaman Indonesia, Universitas Gadjah Mada, Vol. 21, No. 2 ( 2018-01-08), p. 127-
    Abstract: Pepper yellowing disease is one of the most important disease of pepper causing the decrease of pepper production. This research was conducted in the screen house and laboratory to determine the major causal agent of leaf yellowing disease of pepper. Meloidogyne incognita and Fusarium solani were isolated from pepper plantation in West Kalimantan. Pepper seedlings Natar 1 cultivars were planted in sterilized soil collected from pepper plantation in Bengkayang, West Kalimantan. Five months-old seedling were inoculated with M. incognita (1000 larvae of 2nd stadium/plant) and F. solani (50 ml of spore suspension with spore density of 106 spore/ml) in several combinations of time inoculation, i.e., F. solani  and then M. incognita, M. incognita and then F. solani, M. incognita together with F. solani, M. incognita only, and F. solani only. The parameters observed were the development of leaf yellowing disease every weeks for five months. The number of gall, and population M. incognita were observed at the end of the observation. The result showed that when M. incognita was inoculated  to the roots followed by F. solani, the disease severity and the percentage of plant diseases were higher than those which were infected with F. solani or M. incognita alone. The higher population densities of M. incognita and a number of root gall, had observed on plants inoculated by M. incognita combined with F. solani than plants inoculated by M. incognita and F. solani alone. Interaction between M. incognita and F. solani as caused of leaf yellowing disease of pepper was synergistic reaction. IntisariPenyakit kuning lada merupakan salah satu penyakit penting pada lada yang mengakibatkan terjadinya penurunan produksi lada di Indonesia. Penelitian ini bertujuan untuk mengetahui peran Meloidogyne incognita dan Fusarium solani sebagai penyebab penyakit kuning lada. Penelitian yang dilakukan rumah kasa dan laboratorium. Meloidogyne incognita dan Fusarium solani diisolasi dari pertanaman lada di Kalimantan Barat. Penelitian dilakukan dengan menggunakan bibit lada kultivar Natar 1 berumur 5 bulan, dan diinokulasi dengan M. incognita sebanyak 1000 larva stadium 2 dan 50 ml suspensi mikrokonidium F. solani dengan kerapatan 106/ml. Perkembangan gejala penyakit diamati setiap minggu selama 5 bulan, dan pada akhir pengamatan dilakukan penghitungan jumlah puru dan populasi M. incognita. Hasil penelitian menunjukkan bahwa apabila M. incognita menginfeksi akar dan selanjutnya diikuti dengan infeksi oleh F. solani, tingkat keparahan penyakit dan persentase tanaman sakit lebih tinggi dibandingkan dengan infeksi oleh F. solani atau M. incognita secara terpisah. Populasi M. incognita dan jumlah puru akar pada tanaman yang diinokulasi dengan M. incognita bersama-sama dengan F. solani lebih tinggi dibandingkan pada tanaman yang diinokulasi dengan M. incognita atau F. solani secara terpisah. Interaksi antara M. incognita dan F. solani dalam menyebabkan penyakit kuning lada adalah bersifat sinergis.
    Type of Medium: Online Resource
    ISSN: 2548-4788 , 1410-1637
    URL: Article
    DOI: 10.22146/jpti.29760
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2018
    detail.hit.zdb_id: 2974957-8
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  • 8
    Online Resource
    Online Resource
    Identification of the Causal Agent of Cocoa Pod Rot Disease from Various Locations
    Universitas Gadjah Mada ; 2018
    In:  Jurnal Perlindungan Tanaman Indonesia Vol. 22, No. 1 ( 2018-07-27), p. 13-
    Details
    In: Jurnal Perlindungan Tanaman Indonesia, Universitas Gadjah Mada, Vol. 22, No. 1 ( 2018-07-27), p. 13-
    Abstract: Cacao (Theboroma cacao L.) is an important estate commodity in Indonesia with high economic value. The interference of cocoa pod rot disease which was affected by Phytophthora palmivora Butl. resulted in the reduction of the quantity and quality of cocoa beans, with losses up to 44%. This research was aimed to figure out the variation in morphology of P. palmivora isolates from cacao. The research was carried out by collecting samples of cocoa pod with rot symptoms in several cacao growing areas in Java, then the pathogen was isolated and cultured on Potato Dextrose Agar (PDA) medium. The observation was performed on morphological characteristics of isolates macroscopically (colony shape) and microscopically (size of sporangium and chlamydospores). All tested isolates showed various colony shape such as stellate, cottony and irregular as well as sporangium varying from obpyriform, globose, ellipsoid, ovoid and distorted with various size between 30.8×21.9–65.5×46.5 µm in range.IntisariKakao (Theboroma cacao L.) merupakan komoditas perkebunan unggulan di Indonesia dengan nilai ekonomi tinggi. Gangguan penyakit busuk buah kakao yang disebabkan oleh Phytophthora palmivora Butl. mengakibatkan penurunan kuantitas dan kualitas biji kakao, dengan kerugian mencapai 44%. Penelitian ini bertujuan untuk mengetahui variasi morfologi isolat P. palmivora asal kakao. Penelitian dilakukan dengan mengambil sampel buah kakao bergejala busuk buah di beberapa area perkebunan kakao di Jawa, kemudian patogen diisolasi dan dikulturkan pada media Potato Dextrose Agar (PDA). Pengamatan dilakukan terhadap karakteristik morfologi isolat secara makroskopis (bentuk koloni) dan mikroskopis (ukuran sporangium dan klamidospora). Semua isolat yang diuji menunjukkan bentuk koloni seperti stellate, cottony, dan irregular serta sporangium yang bervariasi dari obpyriform, globose, ellipsoid, ovoid, dan distorted dengan ukuran bervariasi antara 30,8×21,9−65,5×46,5 µm.
    Type of Medium: Online Resource
    ISSN: 2548-4788 , 1410-1637
    URL: Article
    DOI: 10.22146/jpti.24728
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2018
    detail.hit.zdb_id: 2974957-8
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  • 9
    Online Resource
    Online Resource
    In Vitro Evaluation of Trichoderma asperellum Isolate UGM-LHAF against Rhizoctonia solani Causing Sheath Blight Disease of Rice
    Universitas Gadjah Mada ; 2021
    In:  Jurnal Perlindungan Tanaman Indonesia Vol. 25, No. 1 ( 2021-07-28), p. 64-
    Details
    In: Jurnal Perlindungan Tanaman Indonesia, Universitas Gadjah Mada, Vol. 25, No. 1 ( 2021-07-28), p. 64-
    Abstract: Trichoderma spp. is a fungus widely used to control soil-borne pathogens, such as Rhizoctonia solani which is plant pathogenic fungi in widely host range, especially on rice. This research aimed to evaluate the ability of Trichoderma asperellum isolate UGM-LHAF against R. solani causing sheath blight disease of rice in vitro condition. Trichoderma sp. used in this research was obtained from The Biological Laboratory of Pakem, Yogyakarta, Indonesia, and Rhizoctonia sp. was obtained through isolation of diseased rice obtained from rice fields in Yogyakarta. The two isolates were characterized base on morphology and molecular identification based on ITS rDNA. The pathogenicity test of Rhizoctonia sp. was evaluated by adding four sclerotia of Rhizoctonia sp. near rice roots at 6 days after sowing. The in vitro test used dual culture and antifungal activity (0%, 10%, 25%, 50% culture filtrate of Trichoderma sp.) with three replicates of each treatment. Two isolates were identified as T. asperellum and R. solani. Sheath blight symptoms appeared after 12 days inoculation. In the in vitro test, T. asperellum isolate UGM-LHAF was able to inhibit the mycelial growth of R. solani (64.23% on dual culture and 68.5% on antifungal activity). This study suggests that T. asperellum isolate UGM-LHAF able to inhibit the growth of R. solani and can be a further potential candidate as a biocontrol agent against R. solani causing sheath blight disease of rice.
    Type of Medium: Online Resource
    ISSN: 2548-4788 , 1410-1637
    URL: Article
    DOI: 10.22146/jpti.65290
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2021
    detail.hit.zdb_id: 2974957-8
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  • 10
    Online Resource
    Online Resource
    Pengaruh Jenis Asam dalam Isolasi Gelatin dari Kulit Ikan Nila (Oreochromis niloticus) terhadap Karakteristik Emulsi
    Universitas Gadjah Mada ; 2018
    In:  Agritech Vol. 37, No. 4 ( 2018-03-19), p. 410-
    Details
    In: Agritech, Universitas Gadjah Mada, Vol. 37, No. 4 ( 2018-03-19), p. 410-
    Type of Medium: Online Resource
    ISSN: 2527-3825 , 0216-0455
    URL: Article
    DOI: 10.22146/agritech.13025
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2018
    detail.hit.zdb_id: 2974874-4
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