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Статті в журналах з теми "Keruing"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Susilowati, A., D. Elfiati, A. Hidayat, et al. "Distribution and association pattern of Keruing (Dipterocarpus sp.) in Tangkahan, Gunung Leuser National Park." IOP Conference Series: Earth and Environmental Science 1241, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1755-1315/1241/1/012011.

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Abstract Keruing (Dipterocarpus sp.) is a commercially important timber and oil-producing species. Keruing’s wood is of high quality, and its oil is widely used for medicinal purposes. Because of the high price and demand for wood and oil, keruing has become a target for exploitation and causing the population to decrease. Understanding of the keruing population in natural habitats is important for conservation efforts, one of which is in the Gunung Leuser National Park (GLNP) area. The purpose of this study was to analyze the distribution patterns and associations of keruing in the Tangkahan

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2

Fernandes, Andrian, Enih Rosamah, and Harlinda Kuspradini. "Minyak Keruing Sebagai Produk Hasil Hutan Bukan Kayu." ULIN: Jurnal Hutan Tropis 9, no. 1 (2025): 156. https://doi.org/10.32522/ujht.v9i1.18634.

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Hutan hujan tropis Kalimantan didominasi oleh jenis Dipterocarpaceae, diantaranya adalah keruing (Dipterocarpus). Selain memiliki kayu dengan kualitas tinggi, keruing juga menghasilkan minyak. Minyak keruing merupakan metabolit sekunder pohon Keruing (Dipterocarpus) dengan bau yang khas dan bersifat mudah menguap. Minyak keruing diperoleh dari destilasi daun, batang, ranting serta pemisahan dari oleoresin keruing. Kandungan minyak keruing didominasi oleh metabolit sekunder terpenoid. Minyak keruing memiliki beragam kegunaan di bidang farmasi dan kesehatan. Minyak keruing dan produk turunannya

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3

Kusmana, Cecep, and Arini Lathifah. "Keragaan Tegakan Merawan (Hopea mengarawan Miq.) dan Keruing Gunung (Dipterocarpus retusus Blume) di Hutan Penelitian Dramaga, Bogor." Journal of Tropical Silviculture 12, no. 3 (2021): 186–93. http://dx.doi.org/10.29244/j-siltrop.12.3.186-193.

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Merawan (H. mengarawan) and Keruing Gunung (Dipterocarpus retusus) are species of the Dipterocarpaceae family that exist in Dramaga Research Forest, Bogor. Merawan and Keruing Gunung have many benefits. The IUCN categorized merawan as critically endangered species, while Keruing Gunung included into Endangered. Therefore, these tree species are need to be cultivated and preserved. The purpose of this study is to examine existence and distribution of merawan and Keruing Gunung in Dramaga Research Forest, Bogor. The research method used was a combination of transect and line plot. The data analy

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4

Ahmad Reza Jatnika, Reza, and Abdul Azis. "BIOPROSPEKSI KERUING GUNUNG (Dipterocarpus retusus Bl) SEBAGAI ANTIBAKTERI DAN KONSERVASINYA DI TAMAN NASIONAL GUNUNG RINJANI." Jurnal TAMBORA 8, no. 1 (2024): 1–10. http://dx.doi.org/10.36761/tambora.v8i1.3452.

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Taman Nasional Gunung Rinjani (TNGR) mempunyai flora yang bernilai ekonomi tinggi yaitu gunung Keruing (Dipterocarpus retusus Bl). Keruing gunung merupakan tumbuhan berhabitus pohon yang berasal dari famili Dipterocarpaceae. Masyarakat hutan TNGR belum memanfaatkan potensi tanaman tersebut kecuali sebagai bahan bangunan dan kayu bakar. Penelitian ini bertujuan untuk menganalisis vegetasi pada semai, anakan, tiang dan pohon, serta mengetahui ekstrak teraktif yang diuji sebagai antibakteri dan mengetahui kandungan golongan metabolit sekunder pada ekstrak teraktif. Keruing gunung berpotensi sebag

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5

Barly, Barly, Abdurahim Martawijaya, and Pipin Permadi. "PENGAWETAN KAYU KERUING UNTUK MENARA PENDINGIN (Preservation of keruing woodfor cooling tower)." Jurnal Penelitian Hasil Hutan 11, no. 8 (1993): 303–7. http://dx.doi.org/10.20886/jphh.1993.11.8.303-307.

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6

Fernandes, Andrian, Aida Ainur Fitriah, Nuraini Ilavita Ocafyanti, et al. "Analisis Warna Kayu Berbasis Komputer, pH, Dan Sifat Fisika Kayu Meranti Merah, Meranti Putih Dan Keruing Dari Toko Kayu Di Samarinda." Daun: Jurnal Ilmiah Pertanian dan Kehutanan 10, no. 1 (2023): 49–59. http://dx.doi.org/10.33084/daun.v10i1.4781.

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ABSTRAK Kayu sebagai bahan baku konstruksi banyak diperjual belikan di toko kayu, diantaranya adalah jenis meranti merah, meranti putih dan keruing. Setiap kayu memiliki sifat yang berbeda, misalnya sifat warna, pH, berat jenis, kadar air dan penyusutan kayu. Penelitian bertujuan untuk mengetahui sifat warna, pH, berat jenis, kadar air kering udara dan penyusutan kayu dari jenis meranti merah, meranti putih dan keruing yang dijual di toko kayu di Samarinda. Pengujian berat jenis, kadar air, penyusutan kayu mengacu pada British Standards BS 373: 1957, pengujian warna kayu dengan menilai L

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7

NG, Y. F., N. AIN, and K. H. LAU. "A new species of Tenothrips pollinating Dipterocarpus sublamellatus in Malaysia." Zootaxa 4695, no. 4 (2019): 397–400. http://dx.doi.org/10.11646/zootaxa.4695.4.9.

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Tenothrips keruing sp. n. is described from Malaysia. This new species was taken from the flowers of Dipterocarpus sublamellatus (local name Keruing kerut) during the recent mass-flowering. The male of this species has a pair of stout setae on abdominal tergite IX, and there are no sternal pore plates. A key to species of Tenothrips from Indomalaysia is provided.

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8

Alwaaritsy, Nurin, and Arista Romadan. "Potential and Challenges of Biofuels from Keruing (Dipterocarpus spp.) to Support Sustainable Fuel Transition in the Transportation Sector." Jurnal Ilmu Pertanian Indonesia 30, no. 2 (2025): 430–40. https://doi.org/10.18343/jipi.30.2.430.

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Mobility is an integral part of daily life; however, the transportation sector significantly contributes to greenhouse gas emissions, which trigger global warming. In the context of climate change, a global issue, the Paris Agreement and the Nationally Determined Contribution (NDC) policies of each country encourage the development of environmentally friendly, renewable energy. Keruing (Dipterocarpus spp.), a tree found only in tropical forests, has the potential to be a source of biofuel from its non-timber products such as oil and resin. This study aims to analyze the challenges of developin

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9

Nisaa', Ratri Ma'rifatun, Resti Ura', Karmilasanti Karmilasanti, Abdurachman Abdurachman, Darwo Darwo, and Sarah Andini. "Pertumbuhan Keruing (Dipterocarpus tempehes V. Slooten) dengan Teknik Penyiapan Lahan Pada Umur 3 Tahun." Jurnal Penelitian Hutan Tanaman 21, no. 1 (2024): 48–60. http://dx.doi.org/10.59465/jpht.v21i1.213.

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Abstract Dipterocarpus tempehes, also known as keruing, is one of the groups within the Dipterocarpaceae family and is classified as an endangered species. Massive exploitation of keruing has led to a drastic decline in the population of this species. This study aims to analyze the effect of cleaning planting paths and spacing on the growth of keruing (D. tempehes) at the age of three years after planting. The research was conducted in the Semoi research plot, within the Special Purpose Forest Area of Samboja, Penajam Paser Utara Regency. Planting of D. tempehes involved land preparation and p

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10

Wiyono, Bambang, and Nurwati Nurwati. "EFFECT OF REMOVING OLEORESIN WITH VARIOUS CHEMICAL COMPOUNDS ON PHYSICAL AND MECHANICAL PROPERTIES OF KERUING WOOD (DIPTEROCARPUS SPP.)." JOURNAL OF FORESTRY RESEARCH 4, no. 1 (2007): 53–60. https://doi.org/10.20886/ijfr.2007.4.1.53-60.

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Keruing  (<em>Dipterocarpus </em>spp.)  was  the  second  important  wood  export of   Indonesia. Unfortunately, this wood contains oleoresin that hinders its utilization. Currently, the method used to remove oleoresin from keruing is by soaking it into bollied sodium salt solution. Result of  this method is unsatisfactory because the residual heavy oleoresin might still appear on the wood surface. The study was conducted to determine suitable chemical compounds for removing oleoresin from keruing, and the effects on physical and mechanical pro

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11

Puspasari, Nirwana. "Analisis Kecepatan Rata-Rata Lalu Lintas Di Ruas Jalan Pilau Akibat Kendaraan Berbelok." Media Ilmiah Teknik Sipil 9, no. 2 (2021): 129–36. http://dx.doi.org/10.33084/mits.v9i2.2324.

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Often we encounter several obstacles that cause traffic concentration at several points on a road segment which causes traffic movement to slow down and even stop. Concentration of traffic flow occurs at intersection points, such as one at the Pilau-Keruing intersection, where traffic moving on the Pilau road is forced to slow down when the traffic flow from Keruing road turns right to cut the flow. Therefore, it is very important to know the effect of turning movement on the smooth flow of traffic. Data collection was carried out by sending several surveyors to the field to obtain secondary a

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12

Malik, Jamaludin, and Adi Santoso. "Hidden bioactive of caryophyllene inside Keruing wood." IOP Conference Series: Materials Science and Engineering 1034, no. 1 (2021): 012149. http://dx.doi.org/10.1088/1757-899x/1034/1/012149.

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13

Herminiwati, Herminiwati, Nursamsi Sarengat, Purnama Darmadji, and Widya Meidrianto. "Sifat filler kayu keruing terhadap vulkanisat karet." Majalah Kulit, Karet, dan Plastik 15, no. 2 (1999): 13. http://dx.doi.org/10.20543/mkkp.v15i2.259.

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14

Selvia, Fitriana, and Vivi Friskila Angela. "Model Community-Based Disaster Risk Reduction (CBDRR) dalam Penanganan Banjir di Desa Keruing, Katingan." EDU SOCIATA ( JURNAL PENDIDIKAN SOSIOLOGI ) 7, no. 2 (2024): 75–84. https://doi.org/10.33627/es.v7i2.2735.

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Penelitian ini mengeksplorasi efektivitas pendekatan Community-Based Disaster Risk Reduction (CBDRR) dalam penanganan banjir di Desa Keruing. Hasil penelitian menunjukkan bahwa CBDRR berhasil meningkatkan kapasitas masyarakat melalui kolaborasi dan partisipasi aktif. Masyarakat lokal memiliki pengetahuan yang mendalam mengenai pola banjir, yang memungkinkan mereka melakukan persiapan mandiri sebelum musim hujan, seperti pembangunan rumah panggung dan penyimpanan cadangan makanan. Tingkat keterlibatan masyarakat dalam kegiatan gotong royong mencapai 96,7%, berkontribusi signifikan dalam pengura

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15

Prasaja, Yudha Arya. "PERBANDINGAN METODE GLCM DAN LBP DALAM KLASIFIKASI JENIS KAYU." INDEXIA 4, no. 2 (2022): 61. http://dx.doi.org/10.30587/indexia.v4i2.4292.

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ABSTRAK Kayu di indonesia memiliki beraneka ragam jenisnya, antara lain kayu meranti, keruing, agathis dan lain sebagaianya. Pengelompokan jenis kayu biasanya ditentukan oleh beberapa parameter, diantaranya adalah warna, berat, tekstur dan masih banyak lagi. Salah satu faktor penting dalam pengelompokan jenis kayu adalah tekstur kayu. Pengelompokan jenis kayu biasanya hanya dapat dilakukan oleh para ahli kayu. Untuk mengatasi hal ini maka digunakanlah suatu teknologi untuk menganalisis suatu tekstur kayu agar dapat diklasifikasikan kedalam kelas-kelas tertentu. Oleh karena itu, diperluka

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16

Lukmandaru, Ganis, Siti Fatimah, and Andrian Fernandes. "Sifat Kimia dan Warna Kayu Keruing, Mersawa dan Kapur." Jurnal Penelitian Ekosistem Dipterokarpa 1, no. 2 (2015): 69–80. http://dx.doi.org/10.20886/jped.2015.1.2.69-80.

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17

Malik, Jamaludin, and Adi Santoso. "KARAKTERISTIK KAYU LAMINA DARI KAYU KERUING BERMINYAK SETELAH DIEKSTRAK." Jurnal Penelitian Hasil Hutan 29, no. 3 (2011): 271–77. http://dx.doi.org/10.20886/jphh.2011.29.3.271-277.

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18

Adriyanti, Dwi Tyaningsih, Soekotjo, Mochammad Na'iem, and Anto Rimbawanto. "Pengelompokan Keruing (Dipterocarpus spp.) di Indonesia Menurut Karakter Buah." Jurnal Ilmu Kehutanan 10, no. 1 (2016): 33. http://dx.doi.org/10.22146/jik.12629.

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Status taksonomi Famili Dipterocarpaceae telah mengalami beberapa kali perubahan. Menurut tinjauan klasifikasi yang disusun oleh Heim, Symington, Meijer, Maury, dan Ashton bahwa Dipterocarpus memiliki hubungan yang cukup dekat dengan Anisoptera sehingga dalam beberapa klasifikasi digambarkan dengan menuliskan keduanya dalam satu kelompok. Namun, Heim memiliki pandangan yang berbeda dengan 4 ahli yang lain yaitu membagi genus Dipterocarpus menjadi 5 seksi yaitu sphaerales, angulati, plicati, alati, dan tuberculati. Penggolongan yang dilakukan oleh Heim atas Dipterocarpus ternyata didukung denga

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19

Almarief, Andi. "Potential Analysis of Forest Stand Inventory in Production Forest Management Unit (KPHP) Nunukan IV, Nunukan Regency-North Kalimantan." AGRIFOR 17, no. 1 (2018): 19. http://dx.doi.org/10.31293/af.v17i1.3068.

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This research aims at (1) to determined the potential, the structure and speciescomposition of forest stands in KPHP Nunukan IV for the basis of forest governance andmanagement of the plan.This research uses data from forest inventories KPHP that implementedin July 2017. Tally sheet data from the field was classified by the growth rate, diameter class and species group and then was calculated for number of stems and volume. The results of this research are 1) from 50 plots retrieved 79 species. 2) Species compotition is dominated by Shorea with average volume 175,31 m3/ha. 3) Stand structure,

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20

Setiasih, Kenny, and Fengky Satria Yoresta. "PENGUJIAN KUAT LELEH LENTUR DAN KUAT TUMPU PAKU." JICE (Journal of Infrastructural in Civil Engineering) 4, no. 01 (2023): 17. http://dx.doi.org/10.33365/jice.v4i01.2423.

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Salah satu parameter yang menentukan dalam perencanaan sambungan kayu adalah kuat leleh lentur dan kuat tumpu alat sambung paku. Penelitian ini bertujuan menentukan nilai kuat leleh lentur (bending yield strength/Fyb) serta kuat tumpu paku beton dan paku kayu. Pengujian kuat leleh lentur paku dilakukan dengan metode three point loading menggunakan universal testing machine (UTM). Sedangkan pengujian kuat tumpu paku dilakukan terhadap dua jenis kayu, yaitu kayu keruing dan kayu meranti. Hasil penelitian menunjukkan bahwa kuat tumpu paku meningkat seiring dengan peningkatan berat jenis kayu dan

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21

Peker, Hüseyin, Ümit Ayata, and Osman Çamlıbel. "Effect of Heat Treatment at 200 Degrees on Shore D Hardness Values of Wood Materials of Some Tropical Tree Species." Journal of Green Technology and Environment 1, no. 2 (2023): 2–6. https://doi.org/10.5281/zenodo.10228274.

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The application of heat treatment leads to various changes in wood properties (mechanical, chemical, physical, biological, surface, etc.). In this study, changes in shore D hardness tests following heat treatment at 200°C for 3 h were determined for wood species including ako (<i>Antiaris toxicaria</i>), amarillo (<i>Centrolobium patinense</i>), angelim amargosa (<i>Vataireopsis araroba</i> (Aguiar) Ducke), onzabili / angongui (<i>Antrocaryon klaineanum</i>), bosse (<i>Guarea cedrata</i>), burkea (<i>Burkea africana</i>), keruing (<i>Dipterocarpus</i> spp.), mangga (<i>Mangifera odorata</i>),

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22

Suhardiman, Mudji, Arusmalem Ginting, and Herman Herman. "Pengaruh Jarak Antara Elemen Batang Tekan Ganda Terhadap Kuat Tekan." Jurnal Teknik Sipil 7, no. 1 (2019): 1–14. http://dx.doi.org/10.28932/jts.v7i1.1337.

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Kayu sering digunakan sebagai batang tekan pada kuda-kuda dan kolom. Untuk mendukung bebanbesar dibutuhkan dimensi batang tekan tunggal cukup besar. Batang tekan tunggal dapat digantidengan batang tekan ganda yang terdiri dari dua atau lebih elemen batang yang digabung menjadisatu kesatuan. Jarak antara elemen mengakibatkan bertambah besarnya momen inersia terhadapsumbu bebas bahan yang berada diantara kedua tampang elemen tersebut. Secara teoritis semakinjauh jarak antara akan meningkatkan daya dukung, tetapi semakin tidak terjamin kerja sama antaraelemen-elemen sebagai satu kesatuan. Berdasa

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23

Heriyanto, N. M., and M. Bismark. "Sebaran dan Potensi Keruing (Dipterocarpus spp.) di Pulau Siberut, Sumatera Barat." Buletin Plasma Nutfah 20, no. 2 (2016): 85. http://dx.doi.org/10.21082/blpn.v20n2.2014.p85-92.

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<p>Distribution and Potency of Keruing (Dipterocarpus spp.) on the Island of Siberut, West Sumatra. Nur. M. Heriyanto and M. Bismark. Distribution and potency of Dipterocarpus spp. (keruing) were studied in Siberut Biosphere Reserve area, covering Sot Boyak and Bekemen forest village, Siberut National Park, West Sumatra. Six research plots of 50 m x 50 m (0.25 ha) were laid down. The results showed that Dipterocarpus spp. density at the tree level were 31 trees/ha at Sot Boyak and 38 trees/ha at Bekemen forest village with important value index of 63.83% and 77.54% respectively. The stro

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24

Lubis, Cindy Tamara Sari, Zainal Abidin, and Siti Hamidah. "PERSENTASE LIMBAH PADA INDUSTRI SAWMILL PT. DASA INTIGA DI KAPUAS." Jurnal Sylva Scienteae 7, no. 5 (2024): 852. http://dx.doi.org/10.20527/jss.v7i5.9221.

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Limbah industri merupakan persoalan serius dalam era industri. Seperti yang terjadi di PT. Dasa Intiga hingga saat ini belum mengelola limbah dengan baik sehingga limbah yang dihasilkan terbuang dan mencemari lingkungan sekitar. Tujuan penelitian ini mengetahui presentase limbah sawmill yang dihasilkan oleh PT. Dasa Intiga, mengetahui pengelolaan limbah yang dilakukan oleh perusahaan tersebut, dan memperkirakan pemanfaatan limbah yang sesuai. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan teknik observasi lapang. Terdapat 4 (empat) jenis kayu yang akan dihitung pers

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Sriwidiastuti, Elysa, Ely Prasetyana, Ice Krisneki, et al. "Analysis of Nursing Clinical Practice with Chest Physiotherapy Innovation Intervention and Pronation Position on Airway Clearance in Pediatric Patients with Pneumonia in The Keruing Room." KESANS : International Journal of Health and Science 3, no. 3 (2023): 228–38. http://dx.doi.org/10.54543/kesans.v3i3.260.

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Introduction: Pneumonia is also known as "the forgotten killer of children". Based on the 2018 Riskesdas report, the age prevalence of pneumonia among children aged 1-5 years was 2.1%. The prevalence of pneumonia in toddlers and children based on gender characteristics was (2.1%) in males and (2.0%) in females. After observations and interviews in the Keruing room of Harapan Insan Sendawar Hospital, it was found that the innovative intervention of chest physiotherapy and pronation position to improve airway clearance in pediatric patients with pneumonia had never been carried out. Objective: T

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26

Yohanes, Yohanes, Musthafa Akbar, and Reysca Admi Aksa. "Finite Element Analysis of Wood Structural Joints on Traditional Wooden Ship." Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) 30, no. 1 (2016): 14–20. https://doi.org/10.36842/jomase.v30i1.416.

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Traditional ship often made by woods materials and it was made without proper engineering procedure. This research focuses on a case study in BaganSiapiapi, Riau Province, Indonesia where a large wooden ship was manufactured. One of the sources of material failure in the manufacturing of wooden ship is located at the joint. In this research, a modification of joint design has been studied where 4 design model have been offered by using glue as the attachment materials and 5 other design by using bolt as the connection method. A finite element method was used to study the strength of the joint

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FERNANDES, Andrian, Erwin ERWIN, Arif WAHYUDIANTO, and Harlinda KUSPRADINI. "Effect of Keruing and Meranti Wood Extracts on the Nail Corrosion Rate." Journal of the Korean Wood Science and Technology 52, no. 6 (2024): 555–64. https://doi.org/10.5658/wood.2024.52.6.555.

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Niyomukiza, J. B., S. P. R. Wardani, and B. H. Setiadji. "The influence of Keruing Sawdust on the geotechnical properties of expansive Soils." IOP Conference Series: Earth and Environmental Science 448 (April 4, 2020): 012040. http://dx.doi.org/10.1088/1755-1315/448/1/012040.

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Wicaksono, Teguh Mulyo, Ali Awaludin, and Suprapto Siswosukarto. "ANALISIS PERKUATAN LENTUR BALOK KAYU SENGON DENGAN SISTEM KOMPOSIT BALOK SANDWICH (LAMINA DAN PLATE)." INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur 13, no. 2 (2017): 129–40. http://dx.doi.org/10.21831/inersia.v13i2.17176.

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ABSTRACTThe using of wood beam for structural purposes are still wood-oriented of good type and quality. Along with the increasing use of wood in the field of construction, the availability of large size wood and good quality becomes more limited. Moving from previous research on weak wood composite, an idea was made to analyze the strength of bending of logs from weak wood through composite engineering. Sengon wood is weak wood with compretion strength 16,91 MPa, tensile strength 46,33 MPa, shear strength 3.51 MPa, flexural strength 23,52 MPa, MOE 4210,99 MPa and classification of E6. Compone

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Abidin, Zainal, Gt A. R. Thamrin, and Candra Silaban. "POTENSI LIMBAH PEMANENAN KAYU DI LOKASI PENEBANGAN IUPHHK-HA PT. DASA INTIGA KALIMANTAN TENGAH." Jurnal Hutan Tropis 5, no. 2 (2018): 174. http://dx.doi.org/10.20527/jht.v5i2.4372.

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This study aims to determine the potency of wood harvesting waste at the logging site of IUPHHK-HA PT. Dasa Intiga. It is estimatedthat waste utilization is based on waste dimension. This research uses wood harvesting waste material after trimming process or bucking. The samples taken are 10% of the total production target at RKT 2016 in 242 stems. The results show that the percentage of waste obtained is 14.21% consisting of 5 types of wood, namely red meranti, white meranti, keruing, lime and balau. This waste is 50 cm to 150 cm in diameter, and its length ranges from 0.9 meters to 4.7 meter

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31

Wan Mohd Zain, Wan Zuraida, Liliwirianis Nawi, Norizan Ahmat, Che Puteh Osman, and Yaya Rukayadi. "A New Flavonoid from Malaysian <i>Dipterocarpus cornutus</i>." Indonesian Journal of Chemistry 21, no. 5 (2021): 1132. http://dx.doi.org/10.22146/ijc.61800.

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Dipterocarpus cornutus Dyer is commonly known as ‘keruing’. It belongs to the family of Dipterocarpaceae, an important timber family in South East Asia. D. cornutus is listed as critically endangered on IUCN Red List. Since no comprehensive study has been documented on the chemical constituents of D. cornutus, there is an urgent need to study this plant comprehensively. Phytochemical study of the stem bark of D. cornutus afforded a new flavonoid (1) and nine known compounds, which consist of flavonoids (2, 3), oligostilbenoids (4, 5, 7, 8, 9, 10), and coumarin (6). The finding of the study con

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32

Saridan, Amiril, Agus Kholik, and Tati Rostiwati. "POTENSI DAN SEBARAN SPESIES POHON PENGHASIL MINYAK KERUING DI HUTAN PENELITIAN LABANAN, KALIMANTAN TIMUR." Jurnal Penelitian Dipterokarpa 5, no. 1 (2011): 11–22. http://dx.doi.org/10.20886/jped.2011.5.1.11-22.

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33

ElShayeb, Mohamed, Abdul Rashid Ab Malik, Fazril Ideris, et al. "Utilization of Numerical Techniques to Predict the Thermal Behavior of Wood Column Subjected to Fire Part B: Analysis of Column Temperature and Fire Resistance." Key Engineering Materials 306-308 (March 2006): 583–88. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.583.

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Mathematical models of Part A [1] are used to calculate the temperatures, deformations and fire resistance of rectangular, hexagonal, octagonal and I-cross section columns for the purpose of Part B. In this paper the comparison among the configurations of the column has been carried out to predict the temperature history for the column elements for preventing the spread of fire and prolonging the structural time collapse. The columns are varied in section size, among them are the rectangular, hexagonal, octagonal and I-cross section column of Keruing timber. The developed mathematical models d

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34

Widians, Joan Angelina, Muhammad Bambang Firdaus, and Muhammad Akbar. "Mobile Augmented Reality Pengenalan Tanaman Dipterocarpaceae." Jurnal Rekayasa Teknologi Informasi (JURTI) 6, no. 1 (2022): 36. http://dx.doi.org/10.30872/jurti.v6i1.8098.

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Keberadaan dipterocarpaceae dianggap penting karena memiliki nilai ekonomis yang tinggi. Banyaknya jenis pohon dipterocarpaceae, banyak pula metode yang digunakan untuk mengenali jenis tanaman tersebut salah satunya menggunakan media augmented reality. Teknologi ini mengubah hal yang tidak tampak sehingga dapat dihasilkan ke dalam 3 dimensi secara real time. Proses pembuatan aplikasi, metode yang digunakan yaitu metode system development life cycle yang mana menggunakan model waterfall yang menekankan fase-fase yang berurutan dan sistematis, adapun tahapan yang dilakukan yaitu requirement, sys

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35

Abdurachman, Abdurachman. "TABEL VOLUME BATANG DI BAWAH PANGKAL TAJUK POHON KERUING (Dipterocarpus acutangulus) DI LABANAN BERAU KALIMANTAN TIMUR." Jurnal Penelitian Dipterokarpa 6, no. 1 (2012): 31–40. http://dx.doi.org/10.20886/jped.2012.6.1.31-40.

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36

Saridan, Amiril, and Massofian Noor. "ASOSIASI DAN SEBARAN JENIS POHON PENGHASIL MINYAK KERUING DI PT. HUTAN SANGGAM LABANAN LESTARI, KALIMANTAN TIMUR." Jurnal Penelitian Dipterokarpa 7, no. 2 (2013): 85–92. http://dx.doi.org/10.20886/jped.2013.7.2.85-92.

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37

Susilo, Hadi, Nisa Rachmania Mubarik, and Triadiati Triadiati. "Characterization of Gibberellin Producing Rhizobacteria Isolated from Soil Forest in Banten." Current Biochemistry 2, no. 1 (2015): 32–41. http://dx.doi.org/10.29244/cb.2.1.32-41.

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Gibberellin is plant growth regulator that stimulates cell elongation, seed germination, flowering, and fruit ripening. This study was conducted to isolate, identify, and optimize growth media for gibberellins producing- rhizobacteria isolated from rhizosphere soil of “keruing“ (Dipterocarpus sp.) tree in forest research Carita, Pandeglang, Banten. Eight bacterial isolates were obtained and all produced gibberellin. The BC2 isolate produced the highest of gibberellin (0.897 mg mL-1) and then selected for identification based on physiology, molecular character, and effects of growth media with

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38

Saridan, Amiril. "KERAGAMAN JENIS DIPTEROKARPA DAN POTENSI POHON PENGHASIL MINYAK KERUING DI HUTAN DATARAN RENDAH KABUPATEN BERAU, KALIMANTAN TIMUR." Jurnal Penelitian Dipterokarpa 6, no. 2 (2012): 75–84. http://dx.doi.org/10.20886/jped.2012.6.2.75-84.

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39

Sari, Nilam. "Kondisi Tempat Tumbuh Pohon Keruing (Dipterocarpus spp) di Kawasan Ekowisata Tangkahan, Taman Nasional Gunung Leuser, Sumatera Utara." Jurnal Penelitian Dipterokarpa 8, no. 2 (2014): 65–72. http://dx.doi.org/10.20886/jped.2014.8.2.65-72.

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40

H`ng, P. S., M. T. Paridah, and K. L. Chin. "Bending Properties of Laminated Veneer Lumber Produced from Keruing (Dipterocarpus sp.) Reinforced with Low Density Wood Species." Asian Journal of Scientific Research 3, no. 2 (2010): 118–25. http://dx.doi.org/10.3923/ajsr.2010.118.125.

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41

Nugraheni, Y. M. M. Anita, Tati Suharti, and Septiantina Dyah Riendriasari. "Pest Infestation of Dipterocarpus retusus (Blume) Fruit at Different Heights in KPHP BATULANTEH." Jurnal Perbenihan Tanaman Hutan 9, no. 1 (2021): 15–25. http://dx.doi.org/10.20886/bptpth.2021.9.1.15-25.

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Keruing gunung (Dipterocarpus retusus) is a non-timber forest product (NTFP) as a fruit producer that can be used as raw material for vegetable fats. One of the problems faced in planting programs for both production and conservation forests is the presence of fruit pests. The purpose of this study was to determine the fruit pests infestation fruits of D. retusus and the effect of altitude on fruit size and weight in Batulanteh Sumbawa. Fruit samples were collected at locations with different heights, namely below 1000 masl (T 22ºC, RH 83%) and above 1000 masl (T 20ºC, RH 88%). The samples of

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42

Wiyono, Bambang, and Nurwati Nurwati. "Effect of Removing Oleoresin With Various Chemical Compounds on Physical and Mechanical Properties of Keruing Wood (Dipterocarpus spp.)." Indonesian Journal of Forestry Research 4, no. 1 (2007): 53–60. http://dx.doi.org/10.20886/ijfr.2007.4.1.53-60.

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43

Untoro, Nur, and Muhammad Ramdhan. "Simple experiment design for impulsive force measure at hammer and nail collisions." Physics Education 59, no. 6 (2024): 065005. http://dx.doi.org/10.1088/1361-6552/ad7007.

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Abstract For approximately 2400 years BC, carpenters have been using hammers to nail wood. The reason for this method is unclear and evaluations of its effectiveness should not be made without proper research. Therefore, this study aims to develop a force-measuring instrument to analyze the impulsive forces produced during hammer strokes on nails. The measurement process is based on the laws of conservation of momentum and mechanical energy and the work-energy principle. The apparatus was constructed using a PVC pipe fitted with a rope pulley and load. The measurements were taken by dropping t

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Pahlani, Eva, Asep Edi Sukmayadi, and Silvia Dewi. "Literatur Review : Tumbuhan Dengan Aktivitas Antikanker Darah Pada Sel Leukemia." Jurnal Ilmiah JKA (Jurnal Kesehatan Aeromedika) 7, no. 1 (2021): 9–21. http://dx.doi.org/10.58550/jka.v7i1.108.

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Kanker darah (leukemia) adalah jenis penyakit kanker yang menyerang sel-sel darah putih yang diproduksi oleh sumsum tulang (bone marrow). Pada penyembuhannya, strategi terapeutik seperti operasi, radioterapi dan kemoterapi untuk mengobati penyakit kanker sering kali menimbulkan efek samping yang serius serta residual morbiditas. Sumber daya alam Indonesia yang melimpah berupa tanaman dapat dimanfaatkan sebagai alternatif obat berbasis bahan alam. Penulisan review artikel ini merupakan penelitian non-eksperimental yang bersifat deskriptif. Dari hasil studi pustaka ini didapatkan beberapa tumbuh

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Pahlani, Eva, Asep Edi Sukmayadi, and Silvia Dewi. "Literatur Review : Tumbuhan dengan Aktivitas Antikanker Darah Pada Sel Leukemia." Jurnal Ilmiah JKA (Jurnal Kesehatan Aeromedika) 6, no. 1 (2020): 1–14. http://dx.doi.org/10.58550/jka.v6i1.117.

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Kanker darah (leukemia) adalah jenis penyakit kanker yang menyerang sel-sel darah putih yang diproduksi oleh sumsum tulang (bone marrow). Pada penyembuhannya, strategi terapeutik seperti operasi, radioterapi dan kemoterapi untuk mengobati penyakit kanker sering kali menimbulkan efek samping yang serius serta residual morbiditas. Sumber daya alam Indonesia yang melimpah berupa tanaman dapat dimanfaatkan sebagai alternatif obat berbasis bahan alam. Penulisan review artikel ini merupakan penelitian non-eksperimental yang bersifat deskriptif. Dari hasil studi pustaka ini didapatkan beberapa tumbuh

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Heriyanto, N. M., Reny Sawitri, and Endro Subiandono. "Kajian Ekologi dan Potensi Pasak Bumi (Eurycoma longifolia Jack.) di Kelompok Hutan Sungai Manna-Sungai Nasal, Bengkulu." Buletin Plasma Nutfah 12, no. 2 (2016): 69. http://dx.doi.org/10.21082/blpn.v12n2.2006.p69-75.

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<p>The study indicated that 88 species found belonged to 29 families. The predominant species was Shorea parvifolia (meranti) and Dipterocarpus costulatus (keruing). The highest dominance value belonged to second transect (0,0998) and the lowest dominant value was the fourth transect (0,0526). The highest diversity index value belonged to fifth transect (2,28) and the lowest of diversity index value was fourth transect (1,41). The abundance of pasak bumi was different in transect, for trees level it was 2 individuals/ha (first transect and third transect), however, in the second, fourth

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Subiandono, Endro, and N. M. Heriyanto. "Kajian Tumbuhan Obat Akar Kuning (Arcangelisia flava Merr.) di Kelompok Hutan Gelawan, Kabupaten Kampar, Riau." Buletin Plasma Nutfah 15, no. 1 (2016): 43. http://dx.doi.org/10.21082/blpn.v15n1.2009.p43-48.

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<p>The study of akar kuning species (Arcangelisia flava Merr.) in Gelawan Forest Complex, Kampar District, Riau, was conducted in April 2005. This research used square plot measuring 1 km x 1 km (100 ha), in square plot made 5 systematicly line transect covering an area 1,000 m length and 20 m width distance between line transect 200 m. Each square plot was divided into sub plot to measure seedling, sampling, pole, and tree. Replications used two sample plots. The result of vegetation analysis, wide plot of 20 ha, with diversity index of tree, pole, sampling and seedling in habitat A. fl

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JHT, Admin. "KERAGAMAN FLORISTIK DAN STATUS KETERANCAMAN KEPUNAHAN JENIS TUMBUHAN DI KAWASAN AIR TERJUN BUNBUN KABUPATEN MURUNG RAYA (Floristic Diversity and Extinction Threat Status of Plants at the Bunbun Waterfall Region, Murung Raya Regency)." HUTAN TROPIKA 12, no. 2 (2019): 23–31. http://dx.doi.org/10.36873/jht.v12i2.28.

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ABSTRACT This research is concerning the floristic diversity and status of extinction threat of class of plants at the Bunbun Waterfall region, Uut Murung sub Regency, Murung Raya Regency, Central Kalimantan Province. The purpose of this research was intended to find out the composition, diversity, and threat status of plants based on Government Regulation (PP) Nomor 7/1999 about Indonesia Scarce Plants and IUCN Global Red List. The research was using combination between the way of path and the way of blocked path. The research result showed that there are 42 kinds of trees, whereas six of whi

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Mohd Puaad, Muhammad Bazli Faliq, Zakiah Ahmad, Norshariza Mohamad Bhkari, et al. "DEVELOPMENT OF A CORRELATION MODEL FOR TORSIONAL SHEAR MODULUS PROPERTIES BETWEEN STRUCTURAL SIZE SPECIMENS BASED ON EN 384:2016 AND SMALL CLEAR SPECIMENS (MS544: PART 2)." Jurnal Teknologi (Sciences & Engineering) 86, no. 6 (2024): 39–48. http://dx.doi.org/10.11113/jurnalteknologi.v86.20819.

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In timber design, the shear modulus of beams is crucial for ensuring torsional stability and minimizing vibrational issues. Traditionally, the ratio of modulus of elasticity (E) to shear modulus (G) is assumed to be 16:1. However, bending tests often combine flexural and shear stresses, making it difficult to assess pure shear properties. The British Standard BS EN 408:2012 now recommends the torsion test as the preferred method for determining the shear modulus of structural-size timber and timber composites. This method has received limited attention in Malaysia. This study investigates the

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Solikin, Toha Fikri Rafsanjani, and Mirza Ghulam Rifqi. "KARAKTERISTIK BAMBU APUS BANYUWANGI LAMINASI SUSUNAN LURUS BERDASARKAN KUAT TEKAN DAN KUAT LENTUR." Jurnal Riset Teknik Sipil dan Sains 3, no. 2 (2025): 58–65. https://doi.org/10.57203/j-riteks.v3i2.2025.58-65.

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Bambu merupakan salah satu bahan yang dapat digunakan sebagai alternatif pengganti kayu, dengan masa panen paling cepat berumur 3 tahun. Bambu memiliki kekuatan yang besar namun belum dikembangkan secara maksimal, untuk mengatasi hal tersebut maka dikembangkan teknik pengolahan bambu menjadi laminasi balok. Berdasarkan hasil pengujian fisik dan mekanik bambu Apus memiliki karakteristik mirip dengan jenis bambu Jawa, Ampel dan Kuning sedangkan berdasarkan pengujian bambu laminasi, kelas kuat bambu Apus laminasi pada penelitian ini memiliki karakteristik yang mirip dengan kayu Meranti, Sungkai,

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