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All Journal Caraka Tani - Agriculture Science Journal Jurnal Teknologi Mineral dan Batubara Jurnal Ilmu Keluarga dan Konsumen Caraka Tani: Journal of Sustainable Agriculture Adi Widya : Jurnal Pengabdian Masyarakat Indonesian Mining Journal Jurnal Entomologi Indonesia Agroteknika NURSING UPDATE JURNAL ILMIAH ILMU KEPERAWATAN Literasi : Jurnal Kajian Keislaman Multi-Perspektif Griya Widya: Journal of Sexual and Reproductive Health Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal
Retno Wijayanti
JURUSAN ADMINISTRASI PUBLIK FAKULTAS ILMU SOSIAL DAN ILMU POLITIK UNIVERSITAS DIPONEGORO SEMARANG
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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PEROLEHAN MINERAL BESI DARI RESIDU BAUKSIT INDONESIA Sariman; Rochani, Siti; Saleh, Nuryadi; Wijayanti, Retno; Dianawati, Erika Arum
Indonesian Mining Journal Vol 27 No 1 (2024): Indonesian Mining Journal, April 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol27.No1.2024.1538

Abstract

Bauxite residue, a solid waste discharged during alumina extraction, is a hazardous material. Its disposal leads to a serious environmental issue although it contains valuable matter such as titanium, silica, rare earth elements, and high iron content (20-60%). This work aims to improve the recovery of iron content within the bauxite residue using three methods, namely direct magnetic separation, roasting followed by magnetic separation, and reduction followed by magnetic separation. Coal as a reductant and Na2CO3 and Na2SO3 as fluxes were used in the reduction process. The result of the study reveals that the direct magnetic separation produces iron concentrate with the Fe content of 53.69% and a recovery of 26.72%, while the roasting process at 900˚C and magnetic separation produces a concentrate of 54.57% Fe with a recovery of 37.33%. The best method was by reduction and magnetic separation process using 4% of Na2CO3  producing iron concentrates with a content of 63.53% Fe and recovery of 74.73%.
Keanekaragaman serangga pengunjung bunga pada tanaman tumpang sari kedelai dengan tanaman orok-orok (Crotalaria juncea) Rahayu, Sayekti Kurnia; Supriyadi, Supriyadi; Supriyono, Supriyono; Wijayanti, Retno; Putri, Retno Bandriyati Arni
Jurnal Entomologi Indonesia Vol 15 No 1 (2018): Maret
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.998 KB) | DOI: 10.5994/jei.15.1.23

Abstract

Flowering plants can enhance the population of insect pollinators as well as crop yields. This study was aimed to determine the effect of intercropping between Crotalaria juncea and soybean on the diversity of flower-visiting insects and the role of wild pollinator to yield of soybean. The study was carried out on a single plot, with the treatment: without planting of C. juncea (control), planting of C. juncea surrounds of the soybean field, planting of C. juncea every 5 rows of soybean and planting of C. juncea every 10 rows of soybean. The effect of wild pollinator was identified by bagging the soybean by using insect net. The results revealed that planting of C juncea may increase the diversity of flower-visiting insect. The highest diversity index was 2.37 found on the plot with the planting of C. juncea every 10 rows of soybean. The highest diversity of flower-visiting insect was 18 species found in treatment by planting C. juncea every 5 rows of soybean. Flower-visting insects were dominated by Coccinella transversalis, Apis mellifera, Xylocopa virginica, Megachile parientina, Megachile relativa, Ropalidia fasciata, and Vespa sp. Wild pollinator by the open pollination (without bagging) may increase 30.11% number of pods, 44.63% number of seeds, and 15.44% seed weight per plant, this shows how important the role of wild/insect pollinators.
Pengaruh Pupuk Silika Terhadap Jumlah Populasi dan Keanekaragaman Hama dan Musuh Alami Pada Kedelai Sari, Eka Nurmala; Wijayanti, Retno; Shidiqi, Moh Hasbi Ash; Arniputri, Retna Bandriyati
Agroteknika Vol 8 No 2 (2025): Juni 2025
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v8i2.534

Abstract

Salah satu tanaman pangan utama di Indonesia adalah kedelai. Kebutuhan akan kedelai terus meningkat seiring dengan permintaan dari konsumen. Hama merupakan organisme penggangu tanaman yang keberadaannya dapat menjadi hambatan dalam budidaya kedelai. Oleh karena itu, perlu adanya sistem pemeliharaan yang tepat terhadap tanaman budidaya. Salah satu tahap dalam pemeliharaan yaitu pemberian unsur hara dan pengendalian hama, pupuk silika memiliki dua manfaat selain sebagai unsur hara juga berguna dalam meningkatkan ketahanan tanaman terhadap serangan hama. Tujuan penelitian ini adalah untuk menentukan waktu dan konsentrasi pupuk silika yang tepat untuk meningkatkan ketahanan kedelai terhadap serangan hama. Penelitian dilakukan di Cawas, Klaten, Jawa Tengah dari Juli hingga Oktober 2020. Menggunakan rancangan penelitian petak terbagi (split plot). Konsentrasi pupuk silika sebagai anak petak adalah P1= 2 ml/L, P2= 4 ml/L, dan P3 = 6 ml/L dan waktu aplikasi sebagai petak utama adalah T1= pemupukan seminggu sekali dan T2= pemupukan dua minggu sekali. Kesimpulan dari penelitian ini adalah bahwa Aphids glycine adalah hama dengan populasi tertinggi, sedangkan Coccinela transversalis adalah musuh alami hama. Nilai indeks keanekaragaman (H`) sedang pada hama, sedangkan untuk musuh alami rendah. Intensitas kerusakan daun dan polong kedelai tidak berbahaya karena tingkat keparahannya rendah.
Gizi Hormonal dan Kesehatan Reproduksi Remaja: Evaluasi Program Makan Gratis Berbasis Pemanfaatan Josua, Dian Pertiwi; Nuridayanti, Nuridayanti; Irianti, Ruslina; Selang, Rustam AR; Sutisna, Anan; Suseno, Muchlas; Wijayanti, Retno
Griya Widya: Journal of Sexual and Reproductive Health Vol. 4 No. 2 (2025): Griya Widya: Journal of Sexual and Reproductive Health
Publisher : Nur Science Institute and Perkumpulan Keluarga Berencana Indonesia (PKBI) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/griyawidya.v4i2.1740

Abstract

  Background: The free meal program (Makan Bergizi Gratis) in senior high schools aims to enhance student well-being by providing adequate nutritional intake. However, its implementation requires comprehensive evaluation, particularly regarding coordination mechanisms and the fulfillment of hormonal nutritional needs critical for adolescent development. This study analyzes the free meal program through the lens of the Utilization-Focused Evaluation (UFE) approach, with a specific focus on students' hormonal nutrition. Method: This research employed a mixed-methods design, combining qualitative descriptive analysis with a case study approach and quantitative anthropometric data. Qualitative data were collected through interviews and observations involving eight informants, including teachers and students. Data analysis involved data reduction, data display, and conclusion drawing, using both methodological and source triangulation to ensure data validity. Results: The findings indicate that: (1) Program coordination is suboptimal, with food delivery not consistently punctual. (2) The meals provided lack sufficient variety, particularly in delivering essential proteins and healthy fats necessary for hormonal balance during adolescence. (3) Student and parental involvement in menu selection and program evaluation remains limited. (4) Feedback to students is provided periodically. Implications: This study recommends strengthening inter-stakeholder coordination, diversifying the nutritional content of menus, and involving both students and parents in program evaluation. Sustainable funding is also identified as a critical factor for ensuring the program's long-term effectiveness. Novelty: This study offers novel insights into the application of Utilization-Focused Evaluation (UFE) in assessing free meal programs and highlights the importance of hormonal nutrition in supporting adolescent development.  
Kemiripan genetik wereng coklat, Nilaparvata lugens Stal. (Homoptera: Delphacidae) populasi Klaten dan Yogyakarta berdasarkan penanda RAPD-PCR Supriyadi, Supriyadi; Wijayanti, Retno
Jurnal Entomologi Indonesia Vol 15 No 2 (2018): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.15.2.79

Abstract

Brown planthopper (Nilaparvata lugens Stal) population from Klaten and Yogyakarta may develop into new biotype, but research on the genetic aspect of these populations is limited.  Random amplified polymorphic DNA (RAPD)-PCR technique was used to identify the genetic similarity of brown planthopper population from Klaten and Yogyakarta compared to the population of nearby region. Brown planthopper were collected from paddy field in Klaten, Yogyakarta, Sukoharjo, Boyolali, Karanganyar, Sragen, and Ngawi. Five random primers, namely OPB 01, OPB 07, OPC 04, OPC 08, and OPN 15 were used to amplify the brown planthopper. The present study revealed that five random primers produced DNA band patterns clearly and comparable. However, no primer produced DNA band that could differentiate the brown planthopper population from Klaten and Yogyakarta compare to the population from nearby region. Based on dendrogram, the population from Klaten and Yogyakarta showed a genetic similarity to the nearby population from Sukoharjo, Boyolali and Sragen, except from Karanganyar and Ngawi. Intra-population genetic studies of brown planthopper from Klaten and Yogyakarta may be needed to reveal more genetic characters.
STUDI PERBANDINGAN PROSES PELINDIAN UNTUK EKSTRAKSI SKANDIUM DARI TERAK RESIDU BAUKSIT Sariman; Rochani, Siti; Saleh, Nuryadi; Rodliyah, Isyatun; Dianawati, Erika Arum; Wijayanti, Retno
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1509

Abstract

Scandium is classified as a rare earth element. Its existences are geochemically in small amounts as associate minerals. Consequently, scandium production is minimally from processing residues of major minerals. Indonesia has large bauxite deposits, and it is processed into alumina, producing bauxite residue as a by-product. The bauxite residue contains rare earth metals, including scandium. In this study, various ways of extracting scandium from bauxite residue slag were carried out. The bauxite residue beneficiation process was done through a smelting reduction process followed by magnetic separation. Scandium extractions were carried out from the bauxite residue slag through a leaching process with concentrated sulfuric, sulfation, alkali fusion, and a 2-stage acid leaching. The best percentage of scandium extracted was obtained at 88.40%, using the 2-stage acid leaching at the acid concentration of 500 g/kg, the temperature of 90oC, and the leaching time at 3 hours for each leaching stage. In addition, the best neodymium extracted achieved  76,97%, using the alkali fusion, fused in NaOH at 700oC for 3 hours.
PERAN DUKUNGAN SOSIAL DAN INTERAKSI IBU-ANAK DALAM MENINGKATKAN KESEJAHTERAAN SUBJEKTIF REMAJA PADA KELUARGA ORANG TUA BEKERJA Wijayanti, Retno; Sunarti, Euis; Krisnatuti, Diah
Jurnal Ilmu Keluarga dan Konsumen Vol. 13 No. 2 (2020): JURNAL ILMU KELUARGA DAN KONSUMEN
Publisher : Department of Family and Consumer Sciences, Faculty of Human Ecology, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (575.224 KB) | DOI: 10.24156/jikk.2020.13.2.125

Abstract

Tingkat kesejahteraan subjektif remaja dapat digunakan untuk mengidentifikasi masalah remaja sejak dini dan membuat tindakan preventif agar terbentuk remaja yang berkualitas. Penelitian ini bertujuan menganalisis pengaruh karakteristik remaja, karakteristik keluarga, dukungan sosial, dan interaksi ibu-anak terhadap kesejahteraan subjektif remaja pada keluarga orang tua bekerja. Tempat penelitian dipilih secara purposive, yaitu Kota Depok dan desain yang digunakan adalah cross sectional study. Responden peneilitian, yaitu remaja berusia 12-18 tahun dari keluarga utuh dengan orang tua bekerja, berjumlah 120 terdiri atas 61 laki-laki dan 59 perempuan. Penarikan responden menggunakan metode disproportional stratified random sampling di lima SMP dan SMA di Kecamatan Sukmajaya, Kota Depok. Data penelitian dikumpulkan melalui self-report menggunakan kuesioner. Dukungan sosial terdiri dari dukungan instrumental, informasi, interaksi social, dan harga diri. Hasil uji beda menunjukkan bahwa dukungan sosial dimensi instrumental pada responden perempuan dan laki-laki memiliki perbedaan signifikan, sedangkan pada interaksi ibu-anak dan kesejahteraan subjektif remaja tidak ada perbedaan signifikan. Hasil uji PLS menunjukkan bahwa dukungan sosial dan interaksi ibu-anak berpengaruh langsung terhadap kesejahteraan subjektif remaja. Untuk itu orang tua hendaknya menyiapkan dukungan sosial yang sesuai bagi remaja dan membangun interaksi yang baik dengan anak diantara kesibukannya bekerja.
Serangga pengunjung bunga tumbuhan liar dan potensinya untuk mendukung penyerbukan jambu mete (Anacardium occidentale L): Flower-insect visitors on wild plants and its potential to enhance pollination on cashew (Anacardium occidentale L) Supriyadi, Supriyadi; Wijayanti, Retno; Arniputri, Retna Bandriyati; Azizin, Fakhriza Nikma
Jurnal Entomologi Indonesia Vol 20 No 3 (2023): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.20.3.269

Abstract

Pollination is important in cashew production, thus it is important to understand the factor determining the presence of pollination in cashew habitat. The research was carried out by field surveys in cashew farms to record the insects that exhibited nectar and pollen foraging activities on wild and cashew flowers. This study recorded the similarity between flower-insect visitors on wild plants and cashews, namely families of Apidae, Halictidae, Pieridae, and Andrenidae. Apidae were the most important flower visitors, but the honey bee, Apis sp. as an important pollinator, did not show the highest abundance. Wild flowering plants in cashew fields have the potential to play a role in the conservation of cashew pollinators.
Co-Authors . Sariman AA Sudharmawan, AA Anan Sutisna Arniputri, Retna Bandriyati Azizin, Fakhriza Nikma Diah Krisnatuti Dianawati, Erika Arum Eka Nurmala Sari Euis Sunarti Hakim, Shiddiq Luqman Harlina Kusuma Tuti Irianti, Ruslina Isyatun Rodliyah, Isyatun Jamhari Jamhari Josua, Dian Pertiwi M. Kamilah Himawati Muchlas Suseno Nuridayanti, Nuridayanti Nuryadi Saleh, Nuryadi Putri, Retno Bandriyati Arni Rahayu, Sayekti Kurnia Rahmania, Shokhib Rukhana, Siti SARIMAN Selang, Rustam AR Shidiqi, Moh Hasbi Ash Siti Rochani, Siti Sri Wahyuni Sukowati, Umi Supriyadi Supriyadi Supriyono Supriyono