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  • 1
    Online Resource
    Online Resource
    The Effectiveness of Boron Preservatives to Prevent Dry-wood Termite Attack on Mahogany Sapwood
    Masyarakat Peneliti Kayu Indonesia ; 2022
    In:  Wood Research Journal Vol. 5, No. 1 ( 2022-04-07), p. 18-19
    Details
    In: Wood Research Journal, Masyarakat Peneliti Kayu Indonesia, Vol. 5, No. 1 ( 2022-04-07), p. 18-19
    Abstract: Mahogany wood  is utilized for many furniture products and construction purposes. The objective of this experiment was to  prevent  wood-destroying  insects  by   using  boron  preservatives  such as boric  acid  and borax.   Materials  used were mahogany  sapwood  planks  (19   years)  obtained  from   community  forest  in  Kali  Bawang  District,  Kulon  Progo.  Two preservation  methods,  i.e.,  hot-soaking  (1,   2,   and  3  hours) and  the   cold-soaking  (12,   24,   36,   and  48  hours)  in  5% concentration,  were used. The drywood termites  (Cryptotermes  cynocephalus Light)  were used for  observation.  The result showed that  the  retention  value ranges were 4.25  to 12.99  kg/m3  for cold-soaking  method and 3.09  to 9.53  kg/m3  for heat- soaking method. Mortaliy rate and mass loss  due to termite attacks ranged from  56.0  to 80.6  % (control values : 43.3%) and 850  to  1370  mg  (control values : 1930  mg). Significant interaction between soaking time and the  type of  preservative was observed to  discover its  effect on  the  levels of  retention (cold soaking) and mortality rate of  termites (hot  soaking). Boron preservatives tended to enhance the  repellent properties than  its toxicity.
    Type of Medium: Online Resource
    ISSN: 2774-9320 , 2087-3840
    URL: Article
    DOI: 10.51850/wrj.2014.5.1.18-19
    Language: Unknown
    Publisher: Masyarakat Peneliti Kayu Indonesia
    Publication Date: 2022
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  • 2
    Online Resource
    Online Resource
    Fuel Properties of Slab Wastes from Sengon Sawmills: A Case Study in Sleman and Wonosobo Regencies
    Masyarakat Peneliti Kayu Indonesia ; 2023
    In:  Wood Research Journal Vol. 12, No. 2 ( 2023-04-04), p. 69-75
    Details
    In: Wood Research Journal, Masyarakat Peneliti Kayu Indonesia, Vol. 12, No. 2 ( 2023-04-04), p. 69-75
    Abstract: Sengon (Paraserianthes falcataria (L.) Nielsen) is a fast-growing and versatile species that has been established in community forests. Many sawmills utilize sengon wood as a raw material which generates wastes in the form of sawdust and slab consisting of a mixture of bark and wood. Those wastes are widely used by communities and home industries as fuel. The objective of this study was to characterize the energy properties of slab wastes from sengon sawmills in Wonosobo dan Sleman Regencies. The results showed that the calorific value and fuelwood value index (FVI) ranges were 4,089 to 4,749 cal/g and 2.71 to 18.74, respectively. The values of density ranged from 0.23 to 0.94 g/cm3. The proximate analysis showed that the values of moisture and ash contents ranged from 13.90 to 20.03% and from 0.30 to 4.59%, respectively, whereas volatile matter and fixed carbon contents ranged from 75.84 to 88.94% and from 10.23 to 20.62%, respectively. In general, the slab samples from Wonosobo gave higher values in fixed carbon content and FVI but smaller values in density, moisture content, volatile matter content, and ash content than those of the samples in Sleman. The bark part showed higher amounts in density, moisture content, fixed carbon content, and ash content but lower in volatile matter content, calorific value, and FVI than the wood part. Based on the wood consumption, sawmill recovery, calorific value, and dry weight biomass value, the potential annual energy from slab wastes in Sleman and Wonosobo reached 1,374 × 1013 cal (equivalent to 1,525,222  L of kerosene) and 1.521 × 1014 cal (equivalent to 16,884,016 L of kerosene), respectively.
    Type of Medium: Online Resource
    ISSN: 2774-9320 , 2087-3840
    URL: Article
    DOI: 10.51850/wrj.2021.12.2.69-75
    Language: Unknown
    Publisher: Masyarakat Peneliti Kayu Indonesia
    Publication Date: 2023
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Implementasi dan Sosialisasi Smart Farming Hidroponik Berbasis Internet of Thing di Dusun Ngentak, Bulakrejo, Sukoharjo
    CV Firmos ; 2022
    In:  Jurnal Abdi Masyarakat Indonesia Vol. 2, No. 6 ( 2022-11-20), p. 1961-1970
    Details
    In: Jurnal Abdi Masyarakat Indonesia, CV Firmos, Vol. 2, No. 6 ( 2022-11-20), p. 1961-1970
    Abstract: Indonesia adalah negara agraris, tetapi disayang saat ini semakin sedikit generasi muda yang mau terjun di bidang pertanian. Berdasarkan data dari Kementerian Pertanian petani muda di Indonesia yang berusia 20-39 tahun hanya sekitar 2,7 juta orang yang artinya hanya sekitar 8 persen dari total 33,4 juta orang petani. Untuk mewujudkan cita-cita Indonesia Lumbung Pangan Dunia tahun 2045 sangat pentingnya mengajak generasi muda atau kaum milenial untuk terjun dan menekuni usaha pertanian. Hal tersebut secara mikro juga tampak di dalam minat para pemuda untuk terjun ke bidang pertanian di Dusun Ngentak, Bulakrejo, Kabupaten Sukoharjo. Para pemuda perlu didekati dengan fakta bahwa pertanian tidak identik dengan terbelakang, tetapi dapat pula menarik dan modern dengan mengimplementasikan teknologi kekinian. Sehingga di dalam program pengabdian ini akan dilakukan implementasi dan sosialisasi smart farming hidroponik berbasis Internet of Thing (IoT) di. Perlu dilakukan sosialisasi dan edukasi teknologi pertanian cerdas atau smart farming agar bisa peningkatan efisiensi produksi, kualitas dan kontinuitas produk-produk pertanian terutama hortikuktura. Selain itu penerapan smart farming juga akan menarik generasi milenial untuk tidak malu menggeluti bidang pertanian. Berbagai macam sistem hidroponik akan dikenalkan baik itu sistem sumbu (WICK) deep flow technique (DFT), Nutrient Film Technique (NFT), sistem rakit apung (Floating Hydroponics System FHS), dan lainnya. Masyarakat juga perlu diedukasi untuk mengetahui parameter-parameter penting yang mempengaruhi pertumbuhan tanaman hidroponik seperti nilai pH, nilai EC (electrical conductivity), suhu nutrisi, dan kadar oksigen. Pengabdian ini diharapkan dapat meningkatkan antusias masyarakat terutama generasi milenial untuk menerapkan smart farming hidroponik.
    Type of Medium: Online Resource
    ISSN: 2807-6567 , 2807-6605
    URL: Article
    DOI: 10.54082/jamsi.567
    Language: Unknown
    Publisher: CV Firmos
    Publication Date: 2022
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  • 4
    Online Resource
    Online Resource
    UTILIZATION OF MOODLE WEB SERVICE BASED SYSTEM TO SYSTEM WITH SIAKAD AND SSO UNS
    Universitas Pembangunan Nasional Veteran Yogyakarta ; 2017
    In:  Telematika Vol. 13, No. 2 ( 2017-01-29), p. 107-
    Details
    In: Telematika, Universitas Pembangunan Nasional Veteran Yogyakarta, Vol. 13, No. 2 ( 2017-01-29), p. 107-
    Abstract: The development of information technology in education allows for integration between systems so every system can be optimized. Elearning, SIAKAD, and SSO UNS are education system in UNS (Universitas Sebelas Maret) but they are not integrated yet. Course data for elearning is still manual and SSO which can not be used to log into SIAKAD. In this study the integration of elearning, SIAKAD, and SSO utilizing REST web service and exchange data using JSON. As a result, the integration of additional system must use a bridge application as a customizer data between elearning and SIAKAD. While the results of the testing to include one course, 40 lecturers, and 40 students, including automatically enroll is 60.22 seconds, while the time required for unenroll lecturers and students is 2:13 seconds. To enroll course, lecturers and students when there are previously data was 28.5 seconds.
    Type of Medium: Online Resource
    ISSN: 2460-9021 , 1829-667X
    URL: Issue
    URL: Article
    DOI: 10.31315/telematika.v13i2
    DOI: 10.31315/telematika.v13i2.1727
    Language: Unknown
    Publisher: Universitas Pembangunan Nasional Veteran Yogyakarta
    Publication Date: 2017
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  • 5
    Online Resource
    Online Resource
    Purification and some properties of Aspergillus pulverulentus β-xylosidase with transxylosylation capacity
    Elsevier BV ; 1995
    In:  Journal of Fermentation and Bioengineering Vol. 79, No. 1 ( 1995-1), p. 17-22
    Details
    In: Journal of Fermentation and Bioengineering, Elsevier BV, Vol. 79, No. 1 ( 1995-1), p. 17-22
    Type of Medium: Online Resource
    ISSN: 0922-338X
    URL: Article
    DOI: 10.1016/0922-338X(95)92737-W
    Language: English
    Publisher: Elsevier BV
    Publication Date: 1995
    detail.hit.zdb_id: 2020913-7
    SSG: 12
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    Online Resource
  • 6
    Online Resource
    Online Resource
    PENGARUH PENGGUNAAN NANAS DAN UMBI POHON GADUNG SEBAGAI KOAGULAN TERHADAP KUALITAS BAHAN OLAHAN KARET RAKYAT
    Center for Journal Management and Publication, Lambung Mangkurat University ; 2018
    In:  Konversi Vol. 5, No. 1 ( 2018-03-28), p. 27-
    Details
    In: Konversi, Center for Journal Management and Publication, Lambung Mangkurat University, Vol. 5, No. 1 ( 2018-03-28), p. 27-
    Abstract: Abstrak- Prakoagulasi lateks merupakan penggumpalan spontan lateks yang biasanya disebabkan oleh pengaruh asam, enzim dan bakteri. Bahan yang digunakan untuk mempercepat prakoagulasi sering dikenal sebagai koagulan. Beberapa penduduk di Kalimantan Selatan menggunakan beberapa koagulan alami yang tidak banyak dikenal seperti umbi akar pohon gadung dan tongkol nanas, sehingga dalam penelitian ini kami ingin mengkaji lebih dalam mengenai penggunaan koagulan alami ini, mengamati dan membandingkan kualitas karet yang dihasilkan. Percobaan dilakukan dengan melakukan pengamatan pada sampel lateks yang telah dicampurkan dengan koagulan yang telah divariasi, penelitian ini mencoba meniru cara pengolahan karet remah kering, sehigga sampel karet yang dibuat memiliki sifat teknis yang dapat diuji. Adapun uji yang dilakukan dalam penelitian ini antara lain; uji prakoagulasi dengan koagulan yang bervariasi, uji prakoagulasi dengan dosis koagulan yang divariasikan, uji prakoagulasi lateks dengan air sisa prakoagulasi awal dan uji sifat teknis karet. Dari hasil analisa sampel gadung diperoleh kadar nitrogen karet sebesar 0,22 %, Po 31, dan PRI 76, pada sampel nanas diperoleh kadar nitrogen sebesar 0,24%, Po 21,5 dan PRI 56. Kata kunci: Prakoagulasi, lateks, koagulan, enzim, bakteri Abstract- Latex precoagulation is a spontaneous clot of latex that is usually caused by the effects of acids, enzymes and bacteria. Materials used to make precoagulation faster known as a coagulant. Some people in South Kalimantan using some natural coagulant that is not widely known as a gadung tree root and pineapple cob, so in this study we wanted to examine more deeply about the use of this natural coagulant, observe and compare the quality of rubber produced. The experiments were performed by making observations on a sample of latex was mixed with a coagulant which has been varied, this study tried to imitate the dry crumb rubber processing, so the rubber samples that created has technical properties that can be tested. The tests performed in this study were precoagulation test with varying coagulant, precoagulation test with coagulant dose varied, latex precoagulation test with waste water of early precoagulation and test of the technical properties of the rubber. From the analysis of gadung sample  obtained rubber nitrogen content of 0.22 %, Po 31, and the PRI 76, the pineapple samples obtained rubber nitrogen content of 0.24 %, 21.5 Po and the PRI 56. Keywords: Precoagulation, latex , coagulants , enzymes , bacteria  
    Type of Medium: Online Resource
    ISSN: 2541-3481 , 2302-3686
    URL: Issue
    URL: Article
    DOI: 10.20527/k.v5i1
    DOI: 10.20527/k.v5i1.4776
    Language: Unknown
    Publisher: Center for Journal Management and Publication, Lambung Mangkurat University
    Publication Date: 2018
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  • 7
    Online Resource
    Online Resource
    Development of Drying Schedule of Superior and Conventional Teak Wood of Ten Years-old Planted in Blora, Central Java
    Universitas Gadjah Mada ; 2016
    In:  Jurnal Ilmu Kehutanan Vol. 10, No. 1 ( 2016-01-14), p. 65-
    Details
    In: Jurnal Ilmu Kehutanan, Universitas Gadjah Mada, Vol. 10, No. 1 ( 2016-01-14), p. 65-
    Abstract: The aims of this study were to investigate drying defect characteristics, to develop proper drying schedule, and to analyze the relationship between the developed drying schedule and its wood properties. This study used superior and conventional teak wood of ten years-old planted in Blora, Central Java. Sample from different axial positions (bottom and middle part) and different board thicknesses (20 mm and 40 mm) were taken. Drying schedule was developed in accordance to Terazawa method, which dried the sample for 72 h at a temperature of 100 °C. Initial moisture content, crack, collapse, and honeycombing were observed to determine the proper drying schedule. The developed drying schedule then was related to their characteristics, such origin of the seedling, thickness, density, and heartwood percentage. The proper scheduled was also applied in larger sample and evaluated. The results showed that there were five variations of drying schedule for superior and conventional teak wood. Chi square analysis indicated that the board thickness affect significantly on developing drying schedules. Boards with a thickness of 20 mm can be dried with an initial temperature of 70 °C, the wet bulb depression 7°C, and the final temperature of 105°C. Further, boards with a thickness of 40 mm should be dried with a softer drying schedule with an initial temperature of 60°C, wet bulb depression temperature of 4 °C, and the final temperature of 85°C. Application of the selected drying schedule was succeed without any significant defects.Keywords: superior; teak; drying schedules; inferior; wood Pengembangan Skedul Pengeringan Kayu Jati "Mega" dan Konvensional Umur 10 tahun Ditanam di Blora, Jawa tengahAbstractTujuan dari penelitian ini adalah mengetahui karakteristik cacat pengeringan, skedul pengeringan yang sesuai, variasi ketebalan papan serta beberapa sifat kayunya terhadap skedul pengeringan. Penelitian ini menggunakan kayu jati prospektif unggul dan konvensional umur 10 tahun dari Blora, Jawa Tengah dengan letak aksial yang berbeda (pangkal dan tengah) serta ketebalan papan masing-masing 20 mm dan 40 mm. Penyusunan skedul pengeringan menurut metode Terazawa, dengan pengeringan selama 72 jam pada suhu 100°C. Parameter yang diamati yaitu kadar air awal, cacat retak, kolaps, dan honeycombing. Cacat yang terjadi digunakan untuk penyusunan skedul pengeringan. Skedul pengeringan selanjutnya diuji hubungannya dengan sumber asal bibit, ketebalan, berat jenis, dan persen kayu terasnya. Skedul pengeringan yang paling sesuai selanjutnya diujicoba dan dievaluasi. Berdasarkan hasil penelitian, diajukan lima skedul pengeringan. Hasil analisis chi square menunjukkan bahwa ketebalan papan memiliki hubungan signifikan terhadap variasi skedul pengeringan. Papan dengan ketebalan 2 cm dapat dikeringkan dengan suhu awal 70°C, depresiasi bola basah 7°C, dan suhu akhir 105°C. Selanjutnya, papan dengan ketebalan 4 cm perlu dikeringkan dengan skedul yang lebih lunak dengan suhu awal 60°C, depresiasi suhu bola basah 4°C, dan suhu akhir 85°C. Hasil uji aplikasi menunjukkan hasil yang memuaskan dengan cacat yang tidak signifikan. 
    Type of Medium: Online Resource
    ISSN: 2477-3751 , 0126-4451
    URL: Article
    DOI: 10.22146/jik.12633
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2016
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  • 8
    Online Resource
    Online Resource
    Utilization of Carbonized Wood from Tropical Fast-Growing Trees for Functional Materials
    Universitas Gadjah Mada ; 2015
    In:  Jurnal Ilmu Kehutanan Vol. 6, No. 2 ( 2015-01-22), p. 81-
    Details
    In: Jurnal Ilmu Kehutanan, Universitas Gadjah Mada, Vol. 6, No. 2 ( 2015-01-22), p. 81-
    Abstract: Pembangunan hutan tanaman dari jenis-jenis cepat tumbuh di kawasan tropis menimbulkan limbah biomassa kayu yang sebagian saat ini digunakan untuk kayu bakar dan sebagian lain digunakan untuk produksi arang dengan tujuan penggunaan yang terbatas. Pengembangan material-material fungsional untuk berbagai aplikasi teknik dengan memanfaatkan arang kayu dari jenis pohon cepat tumbuh harus mempertimbangkan struktur mikro dan struktur pori dalam arang kayu yang berhubungan dengan kondisi karbonisasi. Ulasan ini meliputi kemajuan penelitian-penelitian saat ini pada karbonisasi kayu dari pohon cepat tumbuh tropis, mekanisme perkembangan struktur mikro dan struktur pori dalam arang kayu selama karbonisasi, pemanfaatan yang tepat dari struktur mikro dan porositas dalam arang kayu untuk pengembangan material-material fungsional serta usaha dan peningkatan pengembangan material-material fungsional menggunakan arang kayu dari pohon cepat tumbuh tropis.Katakunci: arang kayu, material fungsional, pohon cepat tumbuh, karbonisasi Utilization of Carbonized Wood from Tropical Fast-Growing Trees for Functional MaterialsAbstractEstablishment of fast-growing tree species plantations in tropical areas generate wood biomass residue in which some of them are currently utilized for heating fuel and some others are used for charcoal production with limited purposes. The development of functional materials for engineering applications utilizing carbonized wood from fast-growing trees species have to consider the microstructure and pore structure in carbonized wood which has a relationship to the carbonization conditions. This review covers the current researches on progress in the carbonization of wood from tropical fast-growing trees, mechanism of the microstructure and pore structure development in carbonized wood during carbonization, proper utilizations of the microstructure and porosity in carbonized wood for the development of functional materials and efforts and enhancing the development of functional materials using carbonized wood from tropical fast-growing trees.
    Type of Medium: Online Resource
    ISSN: 2477-3751 , 0126-4451
    URL: Article
    DOI: 10.22146/jik.5736
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2015
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  • 9
    Online Resource
    Online Resource
    Traditional Food Entrepreneurs in Sabah and Selangor States: A qualitative perspective
    e-IPH Ltd. ; 2023
    In:  Journal of ASIAN Behavioural Studies Vol. 8, No. 25 ( 2023-06-02), p. 87-97
    Details
    In: Journal of ASIAN Behavioural Studies, e-IPH Ltd., Vol. 8, No. 25 ( 2023-06-02), p. 87-97
    Abstract: This study aimed to explore local entrepreneurs during the COVID-19 pandemic in Sabah and Selangor states. Twenty participants from the selected business categories were identified and interviewed using a semi-structured question. Two themes: Food category (coded: categories of food; type of food) and Business criteria (coded: experience, customer, type of business). Entrepreneurs from both states adapt to the changes due to the COVID-19 pandemic by implementing new methods to sustain their business, customer, and type of business. The concerned entrepreneurs must adapt to the changes due to the COVID-19 pandemic by implementing new methods to sustain their business life. Keywords: Local entrepreneur; Traditional food; Qualitative; Covid-19 eISSN 2514-7528 ©2023. The Authors. Published for AMER & cE-Bs by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under the responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), and cE-Bs (Centre for Environment-Behaviour StudiesCollege of Built Environment, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/jabs.v8i25.429
    Type of Medium: Online Resource
    ISSN: 2514-7528
    URL: Issue
    URL: Article
    DOI: 10.21834/jabs.v8i25
    DOI: 10.21834/jabs.v8i25.429
    Language: Unknown
    Publisher: e-IPH Ltd.
    Publication Date: 2023
    detail.hit.zdb_id: 2826159-8
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  • 10
    Online Resource
    Online Resource
    Ekspresi mRNA LMP2A Epstein-Barr Virus dari Biopsi Jaringan dalam Blok Parafin Berpotensi sebagai Biomarka dalam Diagnosis Karsinoma Nasofaring
    Universitas Jenderal Soedirman ; 2017
    In:  Biosfera Vol. 33, No. 3 ( 2017-08-27), p. 121-
    Details
    In: Biosfera, Universitas Jenderal Soedirman, Vol. 33, No. 3 ( 2017-08-27), p. 121-
    Abstract: Karsinoma nasofaring (KNF) merupakan tumor epitel yang terletak di nasofaring dan merupakan penyakit genetik multifaktor yang endemik. Penyebab utama KNF adalah infeksi oleh Virus Epstein-Barr (EBV). Keberadaan EBV pada penderita KNF dapat diketahui dengan ditemukannya DNA EBV dalam spesimen biopsi jaringan penderita KNF. Genom EBV dan ekspresi sebagian dari produk gen laten virus secara konsisten terdeteksi hampir di setiap sel dalam kanker ini, salah satunya adalah gen Latent Membrant Protein (LMP). Aktivitas mRNA EBV lebih mencerminkan patogenesis KNF yang  sesungguhnya dari pada diagnosis serologi dan pengukuran DNA EBV di sirkulasi. Penelitian dilakukan di Laboratorium PA RSUD Margono Seokarjo, Purwokerto/Lab PA Fakultas Kedokteran dan laboratorium genetika/molekuler Universitas Jenderal Soedirman Purwokerto. Analisis Ekspresi mRNA LMP2A EBV dengan teknik one step RT-PCR dan produk RT-PCR (amplikon cDNA) divisualisasi dengan elektroforesis gel agarosa 1%. Hasil ekspresi mRNA LMP2A EBV adalah 27,3% (6 dari 22 sampel). Kesimpulan, metode one step RT-PCR dapat digunakan untuk menganalisis ekspresi mRNA LMP2A EBV dari sampel biopsi jaringan KNF dalam blok paraffin dan hasil positivitas ekspresi mRNA LMP2A EBV sedang, sehingga berpotensi digunakan sebagai petanda biologi molekul diagnosis KNF.
    Type of Medium: Online Resource
    ISSN: 2528-2050 , 0853-1625
    URL: Article
    DOI: 10.20884/1.mib.2016.33.3.323
    Language: Unknown
    Publisher: Universitas Jenderal Soedirman
    Publication Date: 2017
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