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Pelatihan Pembuatan Preparat Biologi sebagai Sarana Peningkatan Media Pembelajaran Bagi Guru-Guru Biologi di Kabupaten Bangka
Full text linkOne of the learning models with a scientific approach is the practicum method. In practical activities, students will carry out observation, experiment, and reasoning activities. A lot of knowledge about the phenomena that occur in living things that must be supported by direct observations and experiments. Therefore, this community service aims to provide skills to biology teachers in junior and senior high schools in terms of making biological preparations as a means of improving biology learning. The method used in facilitating the improvement of preparation skills by conducting training is through (1) the lecture method, namely providing the basic theory of making preparations and (2) the practical method, namely the participants carry out direct practice of making preparations using two methods namely whole mount and free hand-technic accompanied by a servant. . The results of the activity showed that the participants were able to make preparations well, marked by the results of the incision using two methods that were more than 70% observable. The results of measuring participant responses indicate that the majority stated that the methods used during the training could be applied in schoo
PERTUMBUHAN DAN KADAR KLOROFIL DAUN Acacia mangium PADA LAHAN BEKAS TAMBANG TIMAH DI PULAU BANGKA
Full text linkTin-mined land has sandy characteristics (more than 95%), is very porous, low KTK, acidic pH and nutrient poor. Revegetation programs have been carried out to improve soil fertility using local and exotic species (Acacia mangium). Rapid growth, tolerance to various environmental conditions and high economic value are the reasons for choosing A. mangium as a revegetation plant. This study aims to analyze the growth and chlorophyll content of A. mangium leaves which grow in two locations of tin-mined land (Tanjung Ratu Village and Rebo Village). The results showed that A. mangium which was grown on a younger tin mined land (in Tanjung Ratu Village) showed an increase in root dry weight, root length, number of root nodules, and decreased leaf chlorophyll levels. On older tin mined land (in Rebo Village), root dry weight, root length, and number of root nodules were lower, but chlorophyll content increased. The characters affected can be used to determine the ability of tolerance and adaptation of A. mangium in tin mined land
PERTUMBUHAN Hoya coronaria spp. DARI HUTAN KERANGAS PADA BERBAGAI INTENSITAS CAHAYA
Full text linkAbstrakHabitat alami Hoya coronaria di Pulau Bangka adalah di hutan kerangas yang miskin hara, kondisi mikroklimat yang ekstrem dan rawan gangguan kebakaran hutan. Evaluasi adaptasi morfologi dan fisiologis enam varietas H. coronaria di luar habitat alaminya perlu dilakukan untuk mendukung upaya konservasi Hoya. Percobaan dirancang dan dilaksanakan menggunakan rancangan acak lengkap faktorial dengan terdiri dari 2 faktor. Faktor pertama: intensitas cahaya terdiri dari tiga taraf, yakni 15 klux (naungan 75%), 23 klux (naungan 50%), dan 59 klux (tanpa naungan). Faktor kedua yakni varietas H. coronaria berdasarkan variasi warna bunga yang terdiri dari enam taraf (V1, V2, V3, V4, V5, dan V6). Intensitas cahaya tidak berpengaruh nyata terhadap variabel panjang ruas, jumlah ruas, jumlah buku, dan kandungan klorofil pada enam varietas H. coronaria yang diamati. Intensitas cahaya berpengaruh nyata terhadap variabel panjang batang, diameter batang, dan jumlah daun enam varietas Hoya. Semua varietas H. coronaria menunjukkan mampu tumbuh pada kisaran intensitas cahaya 15–59 klux. Namun, respon pertumbuhan yang ditunjukkan oleh keenam varietas berbeda-beda. Lima varietas menunjukkan pertumbuhan yang relatif stabil pada berbagai perlakuan intensitas cahaya, sedangkan satu varietas yaitu V2, menunjukkan adanya perlambatan pertumbuhan pada intensitas cahaya rendah. Hasil penelitian ini menunjukkan bahwa, keenam varietas Hoya lebih tepat dibudidayakan pada lokasi yang lebih banyak terkena cahaya.Abstract Hoya coronaria\u27s natural habitat on Bangka Island is in nutrient-poor heath forests, extreme microclimate conditions and prone to forest fires. Evaluation of the morphological and physiological adaptations of six H. coronaria varieties their natural habitat outside needs to be done to support Hoya\u27s conservation efforts. The experiment was designed and carried out using a factorial complete randomized design with treatment consisting of 2 factors. The first factor is the light intensity consists of three levels namely: 15 klux (75% shade), 23 klux (50% shade), and 59 klux (without shade). The second factor is H. coronaria variety based on flower color different which consists of six levels (V1, V2, V3, V4, V5, and V6). The intensity of the light did not significantly affect the variable length, segment number, number of node and chlorophyll content in the six varieties of H. coronaria observed. Light intensity significantly affected the variable length of the stem, stem diameter and number of leaves of six Hoya varieties. All H. coronaria varieties were shown to be able to grow in the range of light intensities of 15–59 klux. However, the growth response shown by the six different varieties. Five varieties showed relatively stable growth in various light intensity treatments, while one variety, V2, showed a slowing down of growth at low light intensity. The results of this study suggest that, the six Hoya varieties are more precisely cultivated in locations where more light is exposed
Perbandingan Struktur Anatomi dan Kadar Klorofil antara Daun Terinfeksi dan Tidak Terinfeksi Penyakit Kuning pada Tanaman Lada
Full text linkDeteksi awal penyakit kuning yang disebabkan oleh nematoda parasit Radopholus similis dan Meloidogyne incognita serta cendawan patogen Fusarium oxysporum dan Fusarium solani relatif sulit, tanaman dapat diduga terinfeksi setelah menampakkan gejala menguning pada bagian daun. Perubahan struktur anatomi daun lada yang terinfeksi penyakit kuning sejauh ini belum ada laporan tertulis. Penelitian ini dilakukan untuk membandingkan struktur anatomi daun lada yang tidak terinfeksi dan terinfeksi penyakit kuning. Penelitian ini menggunakan dua metode yaitu whole mount untuk membuat sayatan paradermal dan free-hand technique untuk membuat sayatan transversal. Pengukuran kadar klorofil menggunakan spektrofotometer pada panjang gelombang 649 nm dan 665 nm. Hasil pengamatan menunjukkan bahwa kerapatan stomata dan panjang sel epidermis berbeda nyata antara tanaman lada yang terinfeksi penyakit dengan yang sehat dan tidak berbeda nyata pada karakter indeks stomata, tebal kutikula atas dan bawah, tebal epidermis atas dan bawah, tebal bunga karang, tebal palisade, panjang dan lebar sel stomata, panjang dan lebar sel penjaga, lebar sel epidermis, tebal hipodermis atas dan bawah, tebal daun, luas daun, dan kadar klorofil. Daun tanaman lada terinfeksi memiliki stomata lebih rapat dan panjang sel epidermis lebih pendek dibandingkan dengan daun pada tanaman tidak terinfeksi
Effect of drought stress on the anatomical structure of red flowering Hoya coronaria Blume leaves
Full text linkGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Implementation Of Digital Literacy Towards Millennial Universitas Bangka Belitung Students Against Hoaxes
Full text linkJumlah pengguna Internet di Indonesia telah mencapai 132.7 juta orang dari 256.2 juta orang populasi Indonesia. Kenyataan menunjukkan, banyaknya jumlah pengguna Internet di Indonesia, serta tingginya frekuensi mengakses konten informasi dan media sosial, tidak serta-merta menjamin ‘kedewasaan’ netizen Indonesia dalam menggunakan Internet. Selain kesenjangan yang terjadi, berbagai kasus penyalahgunaan Internet juga marak, mulai dari internet fraud, adiksi atau kecanduan, pelanggaran privasi, bias realitas, hingga yang paling mutakhir adalah meluasnya hoax. Metode yang digunakan dalam kegiatan pengabdian yaitu dengan memfasilitasi peningkatan pemahaman mahasiwa terhadap literasi digital dan informasi Hoax adalah dengan mengadakan pelatihan melalui (a) Metode ceramah (b) Metode praktek (c) Metode pendampingan. Kegiatan pengabdian ini melibatkan mahasiswa dilangsungkan di Gedung Babel IV Universitas Bangka Belitung. Kegiatan ini bertujuan untuk memberikan pemahaman kepada mahasiswa tentang pengertian hoax, latar belakang seseorang memproduksi dan menyebarkan hoax, siklus penyebaran informasi dan hoax, media penyebaran hoax, lingkaran penyebaran hoax, dan cara mengantisipasi hoax.. Adapun cara caranya yaitu berupa (a) Hati-hati dengan Judul Provokatif, (b) Mencermati Alamat situs (URL), (c) Memeriksa Fakta dan Memverifikasi kebenaran, (d) Terlibat dalam berbagai group anti hoax dan (e) Memeriksa keaslian foto. Kegiatan pengabdian yang dilakukan memberikan luaran berupa terbentuk pemahaman dalam literasi digital khususnya dalam menghindari dari berita hoax sebagai bentuk berita yang tidak benar sehingga menjadi masyarakat yang cerdas dalam berliterasi. Kegiatan sosialisasi Literasi digital menuju mahasiswa Universitas Bangka Belitung (UBB) milenial anti hoax diikuti oleh mahasiswa dengan narasumber dari Perpustakaan Universitas Bangka Belitung dan hasil kerjasama dengan UPT Perpustakaan Universitas Bangka BelitungThe number of Internet users in Indonesia has reached 132.7 million people out of 256.2 million Indonesian population. The reality shows that the large number of Internet users in Indonesia, as well as the high frequency of accessing information content and social media, does not necessarily guarantee the 'maturity' of Indonesian netizens in using the Internet. In addition to the gap that occurs, various cases of Internet abuse are also rampant, ranging from internet fraud, addiction or addiction, violation of privacy, reality bias, to the most recent one is the spread of hoaxes. The method used in this service activity is to facilitate the improvement of students' understanding of digital literacy and hoax information by conducting training through (a) lecture method (b) practice method (c) mentoring method. This service activity involving students was held at the Babel IV Building, Universitas Bangka Belitung. This activity aims to provide students with an understanding of the meaning of hoaxes, the background of someone producing and spreading hoaxes, the cycle of information dissemination and hoaxes, the media for spreading hoaxes, the circle of spreading hoaxes, and how to anticipate hoaxes. The ways are (a) Be careful with provocative titles, (b) Look at the site address (URL), (c) Check facts and verify the truth, (d) Get involved in various anti hoax groups and (e) Check the authenticity of photos. The service activities carried out provide outputs in the form of forming an understanding in digital literacy, especially in avoiding hoax news as a form of news that is not true so that it becomes a smart society in literacy. The socialization of digital literacy towards anti-hoax millennial Universitas Bangka Belitung (UBB) students was attended by students with speakers from the Universitas Bangka Belitung Library and the results of collaboration with the UPT Perpustakaan Universitas Bangka Belitun
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