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Response of Andong Bamboo (Gigantochloa pseudoarundinacea) to Isocyanate Adhesive Ignasia M Sulastiningsih; Surdiding Ruhendi; Muhammad Y Massijaya; Wayan Darnawan; Adi Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.269 KB) | DOI: 10.51850/jitkt.v11i2.92

Abstract

The response of Gigantochloa pseudoarundinacea to isocyanate adhesive was investigated by evaluating its bonding quality. The bamboo strips were categorized based on the position at the bamboo culm viz bottom,midle, and top. One part of the bamboo strips were immersed in 7% boron solution for 2 hours.The treated and untreated bamboo strips were glued parallel to each other using the isocyanate adhesive at the glue spread of 250 g m-2 to produce two-ply laminates. The bonding surfaces of two-ply laminates were designed into 3 different combinations viz between inner and outer surfaces, both between inner surfaces, and both between outer surfaces. The bonding strength and bamboo failure were evaluated in dry and wet conditions. Results showed that the response of G. pseudoarundinacea to isocyanate adhesive was significantly affected by the posision at the bamboo culm, bamboo strips treatment and combination of bonding surfaces. In comparasion with the middle and the top part, the bottom part of bamboo culm had the highest bonding strength (dry test). However, the wet test results showed that the bonding strength of laminates made from bottom part did not significantly different with that of middle part. The preservation treatment on bamboo strips reduced the bonding strength.Key words: bamboo, bonding strength, isocyanate, laminates, preservation
The Physical and Mechanical Properties of Glulam Made from Pine and Jabon Woods Andi SRD Lestari; Yusuf Sudo Hadi; Dede Hermawan; Adi Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.072 KB) | DOI: 10.51850/jitkt.v16i1.445

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Wood from plantation forests can be used to make glued laminated lumber (glulam) products for structural applications. Wood from two species, namely pine (Pinus merkusii) and jabon (Anthocephalus cadamba), and polyurethane and tannin mahogany adhesives (glue spread 200 g m-2) were used to manufacture glulams. The aim of this research was to determine the physical and mechanical properties of glulam made from pine and jabon woods. Wood densities of pine and jabon were 0.71 and 0.43 g cm-3, respectively. The glulams consisted of three layers of the same wood species, and samples were (3×6×120) cm3 in thickness, width, and length, respectively. The physical and mechanical properties of glulam were tested according to Japanese Agricultural Standard (JAS) 234-2007. The results showed that glulam made from pine met the standard for modulus of elasticity and modulus of rupture (MOR) values. Glulam made from jabon wood fulfilled the standard for MOR, shear strength, and hot- and cold-water delamination tests. In the formaldehyde emission test, jabon glulam fulfilled the F*** (low emission) standard and pine glulam met the F**** (very low emission) standard according to JAS 234-2007.
Aktivitas Antioksidan, Antibakteri, dan Toksisitas Ekstrak Kulit Batang Pohon Kesambi (Schleichera oleosa (Lour) Oken) Puspita Sari; Purwantiningsih Sugita; Adi Santoso
Jurnal Jamu Indonesia Vol. 4 No. 3 (2019): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1021.706 KB) | DOI: 10.29244/jji.v4i3.163

Abstract

Penelitian ini bertujuan untuk membandingkan aktivitas antioksidan, antibakteri, dan uji toksisitas dari berbagai jenis ekstrak kulit batang pohon kesambi (Schleichera oleosa (Lour)Oken). Tahapan penelitian meliputi proses esktraksi kulit batang kesambi dari kecamatan Mancak Serang dengan teknik maserasi bertingkat menggunakan 3 pelarut : Metanol, n-heksan, dan etil asetat. Ekstrak tersebut kemudian diuji aktivitas antioksidan, antibakteri, dan toksisitasnya. Hasil pengujian antioksidan dengan metode DPPH, antibakteri dengan metode difusi agar, dan uji toksisitas dengan metode BSLT didapat hasil penelitian menunjukkan bahwa ekstrak etil asetat memiliki aktivitas antioksidan (IC50 7,723 ppm) yang lebih baik dibandingkan dengan ekstrak metanol (IC50 7,801 ppm), dan ekstrak n-heksan (IC50 8,568 ppm). Aktivitas antibakteri menunjukkan adanya kemampuan untuk menghambat pertumbuhan bakteri Streptococcus aureus dibandingkan bakteri Escherichia coli pada konsentrasi 10000 ppm, dan hasil uji toksisitas menunjukkan bahwa ekstrak etil asetat memiliki aktivitas yang lebih baik (LC50 305,17 ppm) dibandingkan ekstrak n-heksan (LC50 374,96 ppm) dan ekstrak metanol (LC50 431,26 ppm).
APLIKASI AMONIUM HIDROKSIDA SEBAGAI ZAT PENANGKAP FORMALDEHIDA PADA KAYU LAPIS INDAH Lany Nurhayati; Deppy Akilul Kholik Jannah; Adi Santoso
Jurnal Sains dan Terapan Kimia Vol 12, No 1 (2018)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.997 KB) | DOI: 10.20527/jstk.v12i1.4303

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Emisi formaldehida dari produk kayu lapis seperti kayu lapis indah yang direkat dengan urea formaldehida (UF) dapat mengganggu kesehatan, terutama jika digunakan di dalam ruangan dengan ventilasi terbatas. Untuk mengurangi emisi formaldehida, dapat dilakukan dengan penambahan zat penangkap dan akan bereaksi dengan formaldehida yaitu  amonium hidroksida (NH4OH). Data yang diamati dalam penelitian ini meliputi pengukuran kadar air dan emisi formaldehida berdasarkan Japanese Agriculture Standard 2014 No. Notifikasi 303 menggunakan metode desikator 24 jam. NH4OH 25 % yang ditambahkan dilakukan dengan cara disemprot sebanyak 10 mL; 20 mL dan 30 mL. Hasil penelitian menunjukkan bahwa dengan penyemprotan NH4OH 25% sebanyak 10 mL dapat menurunkan emisi formaldehida pada kayu lapis indah sebesar 50,77% bila dibandingkan dengan kontrol. Kadar air kayu lapis indah setelah dilakukan penyemprotan NH4OH berkisar antara 9,84%-10,34%.
MORFOMETRI DAN KOMPOSISI ISI LAMBUNG IKAN TUNA SIRIP KUNING (Thunnus albacares) YANG DIDARATKAN DI PANTAI PRIGI JAWA TIMUR Adina Feti Nuraini; Adi Santoso; Sri Redjeki
Journal of Marine Research Vol 3, No 2 (2014): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.852 KB) | DOI: 10.14710/jmr.v3i2.4968

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Ikan tuna sirip kuning mempunyai panjang cagak (fork-length) sepanjang 70 cm, 90 cm, 155 cm hingga yang terpanjang yang pernah tercatat 210 cm. Ikan tuna yang ditemukan di PPN Prigi memiliki ukuran yang beragam. Penelitian ini dapat memberikan informasi kondisi morfometri ikan tuna sirip kuning dari kelas panjang yang ditemukan di perairan pantai Prigi dan kebiasaan makan (food habits) ikan tuna sirip kuning (Thunnus albacares) di pantai Prigi, Kabupaten Trenggalek. 71 ekor sampel ikan tuna sirip kuning diambil pada bulan September – November 2013 dari pengepul di pantai Prigi, untuk selanjutnya di lakukan pengukuran panjang total, berat tubuh dan analisis hubungan panjang-berat serta analisis isi lambung dengan metode frekuensi kejadian, metode volumetrik dan indeks preponderance. Kisaran panjang ikan tuna sirip kuning terdiri atas kisaran panjang kelas kecil 17 cm – 37 cm dengan komposisi organisme dalam lambung yang banyak ditemukan adalah udang dan ikan kecil, sedangkan kisaran panjang kelas sedang 38 cm – 58 cm komposisi organisme dalam lambung adalah ikan dan kisaran panjang kelas besar 59 cm – 78 cm dengan komposisi organisme yang banyak adalah ikan. Penelitian yang telah dilakukan dapat diambil kesimpulan bahwa nilai dari perhitungan regresi sederhana hubungan panjang dan berat ikan tuna sirip kuning di perairan pantai Prigi bersifat allometrik negatif dengan nilai slope b sebesar 2,9518.
Struktur Komunitas Gastropoda Di Tracking Mangrove Kemujan, Taman Nasional Karimunjawa Syaiful Imam; Adi Santoso; Rudhi Pribadi
Journal of Marine Research Vol 3, No 4 (2014): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.146 KB) | DOI: 10.14710/jmr.v3i4.11420

Abstract

Taman Nasional Karimunjawa merupakan kawasan pelestarian alam dengan tingkat keanekaragaman hayati yang tinggi. Ekosistem mangrove Taman Nasional Karimunjawa yang sebelumnya kawasan perlindungan tertutup akan dijadikan kawasan terbuka untuk ekowisata dengan membangun Tracking Mangrove. Keberadaan Tracking Mangrove diduga akan berpengaruh terhadap kondisi ekologis gastropoda, sehingga perlu dilakukan pengkajian di lokasi ini  agar datanya dapat dijadikan baseline untuk memonitoring kondisi lingkungan yang akan dijadikan kawasan ekowisata mangrove.Tujuan penelitian ini untuk mengetahui data struktur komunitas gastropoda di Tracking Mangrove Kemujan, Taman Nasional Karimunjawa, Jepara. Penelitian di Tracking Mangrove Kemujan dilakukan di 8 stasiun. Penentuan lokasi sampling dengan metode purposive sampling method dan pengambilan sampel menggunakan metode kualitatif pada transek 5 m x 5 m.Hasil penelitian ditemukan 8 spesies gastropoda dari 5 famili. Jenis yang paling mendominasi adalah Cerithidea cingulata cingulata. Rata-rata kelimpahan gastropoda pada seluruh stasiun berkisar (55–179 ind/25 m2). Indeks Keseragaman (e) termasuk dalam kategori tinggi (0,65–093). Indeks Dominansi (C) menunjukkan tidak adanya dominansi dari jenis tertentu secara umum (0,07–0,80). Pola Sebaran di lokasi penelitian menunjukkan pola sebaran mengelompok (100 %) dan Indeks Kesamaan Komunitas antar stasiun penelitian berkisar (50 %–100 %) yang termasuk dalam kategori sedang – sangat tinggi
Studi Akumulasi Logam Timbal (Pb) dan Efeknya Terhadap Kandungan Klorofil Daun Mangrove Rhizophora mucronata Aulia Dewi Puspita; Adi Santoso; Bambang Yulianto
Journal of Marine Research Vol 3, No 1 (2014) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.225 KB) | DOI: 10.14710/jmr.v3i1.4596

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Mangrove is a coastal plant which is vurneable to heavy metal pollution , whether from land or from the sea . More industrial development resulted in high levels of waste pollution .Various industrial waste into coastal waters will threat coastal vegetation like as mangrove. Rhizophora mucronata is one kind of mangrove with the highest population and is most often found around the coastal areas. Many industrial activities dischange lead (Pb), where Pb is one of the heavy metals that can not be degraded, can be accumulated in organism. This study aimed to know the accumulation of plumbum in mangrove the influence of difference concentration of Pb and exposure duration on chlorophyll content of R. mucronata mangrove leaves. The research was conducted in July-August 2012 at the Marine Science Campus , Faculty of Fisheries and Marine Science , Diponegoro University , Semarang. Mangrove saplings used was R. mucronata ± 8 months old . Mangrove test was placed on the test media with concentrations of 20 , 100 , and 500 ppm . Each treatment was triplicates and analysis for chlorophyll content was done every 10 days. The results of study can be concluded that the greater Pb concentration the longer the exposure time could decrease of chlorophyll content. But despite the amount of chlorophyll decreased, based on the calculation of the value of phytoremediation (FTD) R. mucronata still be potencial to reduce pollutant movement of Pb in soil/sediment/
Studi Akumulasi Logam Tembaga (Cu) dan Efeknya terhadap Struktur Akar Mangrove (Rhizophora mucronata) Irwan Dedy; Adi Santoso; Irwani Irwani
Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.142 KB) | DOI: 10.14710/jmr.v2i4.3678

Abstract

Copper metal (Cu) is one of the heavy metals that can contaminate the environment, especially water. Cu is a heavy metal which is harmful to human health, but Cu is also needed in our life as trace elements. This study aimed to determine the effect of Cu contaminants with different concentrations on the root structure of the mangrove seedlings Rhizophora mucronata for 30 days of observation. Rhizophora mucronata is taken from Tapak village, Tugu, Semarang, Central Java. The research was carried out from June to August 2012 at the Marine Science Campus of Diponegoro University Semarang. A laboratory experiment research was conducted on the effect of different Cu concentrationt (20, 100 and 500 ppm) and different exposure material (10, 20 and 30 days) on the root structure of mangrove Rhizophora mucronata. Root structure using microscopy observations performed at the Laboratory of Plant Faculty of Science and Mathematics, Diponegoro University. The result demonstrated that the root of epidermis, cortex, endodermis, xylem and phloem had no effect on their structure after exposure to concentration of Cu of 20, 100 and 500 ppm since there were not change on their shape compared to the control.
EKSPLORASI FAKTOR KENDALA DAN STRATEGI IMPLEMENTASI REFORMASI PERPAJAKAN GUNA MENDORONG PENINGKATAN PENERIMAAN PAJAK DAN KEPATUHAN WAJIB PAJAK Adi Santoso; NASHARUDDIN MAS; GUNARIANTO GUNARIANTO
JIM (Jurnal Ilmu Manajemen) Vol 8, No 1 (2022): JURNAL ILMU MANAJEMEN
Publisher : BADAN PENERBITAN UNIVERSITAS WIDYAGAMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jim.v8i1.3998

Abstract

ABSTRACT The purpose of the research is to obtain empirical evidence in the form of propositions and existing models on the exploration of constraint factors and strategies for implementing tax reform to encourage increased tax revenue and taxpayer compliance. Intensive interviews were conducted to eight key informants set by snowball sampling. Qualitative approach to case studies by following three stages of analytical techniques from Strauss & Corbin, namely open coding, axial coding, and selective coding. The results obtained are in the form of four propositions, namely: Strengthening the commitment of the taxman, increasing taxpayer compliance, potentially boosting tax revenues as a sign of successful implementation of tax reform; Improving the economy, the adjustment of tax reform, supported by sophisticated management information systems, are suspected to be able to encourage the strengthening of tax reform implementation; Professional management, supported by good marketing, as well as the implementation of appropriate strategies, is suspected to be able to encourage the strengthening of tax reform implementation; as well as intensive socialization, fair law enforcement, reduced constraints are suspected to be able to encourage strengthening the implementation of tax reform.Keywords: Marketing, Socialization, Reform, Management Information Systems, Economy, Compliance, Acceptance, Management, Law, Commitment, Strategy, Constraints. ABSTRAK Tujuan penelitian adalah untuk mendapatkan bukti empiris berupa proposisi dan existing model tentang eksplorasi faktor kendala dan strategi implementasi reformasi perpajakan guna mendorong peningkatan penerimaan pajak dan kepatuhan wajib pajak. Wawancara intensif dilakukan kepada delapan key informan yang ditetapkan secara snowball sampling. Pendekatan kualitatif studi kasus dengan mengikuti tiga tahapan teknik analisis dari Strauss & Corbin, yakni open coding, axial coding, dan selective coding. Hasil yang diperoleh berupa empat proposisi, yakni: Menguatnya komitmen petugas pajak, meningkatnya kepatuhan wajib pajak, berpotensi mendongkrak penerimaan pajak sebagai tanda suksesnya implementasi reformasi perpajakan; Membaiknya perekonomian, adanya penyesuaian reformasi perpajakan, didukung sistem informasi manajemen yang canggih, diduga mampu mendorong penguatan implementasi reformasi perpajakan; Manajemen yang profesional, didukung marketing yang baik, serta penerapan strategi yang tepat, diduga mampu mendorong penguatan implementasi reformasi perpajakan; serta Sosialisasi yang intensif, penegakan hukum yang adil, kendala yang ada berkurang  diduga mampu mendorong penguatan implementasi reformasi perpajakKata kunci: Marketing, Sosialisasi, Reformasi, Sistem Informasi Manajemen, Ekonomi, Kepatuhan, Penerimaan, Manajemen, Hukum, Komitmen, Strategi, Kendala.
Correlation of Filling Fitness for Discharge Summary of Inpatient with the Health Ministerial Regulation Number 269 Year 2008 in Baptis Hospital, Batu City, Indonesia Farah Adiba; Adi Santoso; Soraya
JOURNAL OF MEDICAL RECORDS AND HEALTH INFORMATION Vol 1 No 1 (2020): JOURNAL OF MEDICAL RECORDS AND HELATH INFORMATION
Publisher : Malang: Sekolah Tinggi Ilmu Administrasi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.425 KB)

Abstract

The summary of returning patients is a summary of all patient care and treatment periods as has been attemptedby health workers and related parties. This sheet should be signed by the treating physician. The patientsummary returns reflect all the important information that concerns the patient and can serve as a basis forfurther action. Based on PERMENKES 269 / MENKES / PER / III / 2008 in stage 4 states that the homesummary must be made by doctors and dentists who treat patients. Therefore, the summary of patients returninghome is said to be still not good because the filling in the Medical Resume that has not been filled completely.This study uses Descriptive research, which is one type of research method that tries to describe and interpretthe object in accordance with what it is. The method used in data collection is interview and observation. Thisstudy aims to review the suitability of filling patient summary returns on the inpatient medical records file atBaptist Batu Hospital. The data used are medical record data file of inpatients in January-March 2017. Theresults showed that the highest percentage in the filling summary of patients back home that is as much as 100%exist in the patient identity variable. The completeness of the completion of the outpatient patient summary formfound at inpatient in January had reached 84%, February 86%, and March reached 87%.Keyword : Patien home summary, conformity