Articles

KETERSEDIAAN DAN SERAPAN FOSFOR OLEH TANAMAN JAGUNG MANIS (Zea mays saccrata Sturth) AKIBAT PEMBERIAN BOKASI DAN PUPUK KANDANG PADA ENTISOL SIDERA Syarifuddin, Syarifuddin; Wahyudi, Imam; AM Nuri, Isrun
AGROVET Vol 1, No 1 (2012)
Publisher : Fakultas Pertanian Universitas Tadulako

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Abstract

Penelitian ini dilakukan untuk mengetahui tingkat ketersediaan dan serapan  P tanaman jagung (Zea mays saccrata Sturth) pada Entisol Sidera akibat pemberian bokasi dan pupuk kandang. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian bokasi dan pupuk kandang terhadap  ketersediaan dan serapan P tanaman jagung (Zea mays saccaratha Sturt) pada Entisol Sidera. Metode penelitian yang digunakan dalam peelitian ini yaitu dengan menggunakan Rancangan Acak Kelompok dengan 5 perlakuan dan 3 ulangan. Dimana masing-masing perlakuan yaitu kontrol, pemberian pupuk kandang ayam, pupuk kandang sapi, bokashi seresah jagung dan bokashi seresah kacang tanah.  Dari hasil penelitian menunjukan bahwa dengan pemberian beberapa bahan organik terutama terutama pupuk kandang ayam teruji efektif dapat menurunkan Aldd, sedangkan untuk bokashi seresah jagung dapat meningkatkan pH, P – total, P – tersedia, berat kering tanaman, konsentrasi P tanaman, serapan P dan C – organik.
SERAPAN N TANAMAN JAGUNG (Zea mays L.) AKIBAT PEMBERIAN PUPUK GUANO DAN PUPUK HIJAU LAMTORO PADA ULTISOL WANGA Wahyudi, Imam
AGROLAND Vol 16, No 4 (2009)
Publisher : AGROLAND

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Abstract

High content of aluminum and low N availability in Ultisol are the important limiting factors for crop production. Hence, important efforts on management of Ultisol are increasing N availability for crop demand. Guano fertilizer and pruning of Lamtoro are source of organic matter used to improve the soil, although the two fertilizers still not yet have full attention. The present study was aimed to elucidate roles of Guano fertilizer and green manure of Lamtoro on Al concentration, N availability, crop growth and N uptake by maize in an Ultisol.  The study was conducted in a glasshouse. Combination of the two fertilizers at two different rates of each fertilizer (10 and 20 ton/ha) and one control (no fertilizer added) resulted in nine treatments and they were arranged in a factorial randomized block design with three replicates. Results of the experiment showed that the application of Guano fertilizer and Lamtoro green manure significantly reduced Alexch concentration, increased soil pH, increased N availability, improved maize growth and increased N taken up by maize grown for 45 days.
KAJIAN PERUBAHAN STATUS FOSFOR TANAH AKIBAT PEMBERIAN BOKASHI KULIT BUAH KAKAO PADA INSEPTISOLS PALOLO Wahyudi, Imam
AGROLAND Vol 17, No 2 (2010)
Publisher : AGROLAND

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Abstract

High content of aluminium and low P availability in Inceptisols are the important limiting factors for crop production. Hence, important efforts on management of Inceptisols are the increasing in  P availability for crop demand. Cacao fruit skin bokashi is a source of organic matter used to improve the soil, although using bokashi  as organic fertilizer is still not yet have full attention.   A study that was aimed to elucidate roles of cacao fruit skin boakshi on Al concentration, and soil    P status in an Inceptisols was conducted in a laboratorium. Five treatments consisting of the rates of the bokashi (10, 20, 30, 40 and 50 ton/ha) and one control (no bokashi added) were arranged in a completely randomized design with three replicates. Results of the experiment showed that the application of 30 t ha-1 cacao fruit skin bokashi significantly increased soil pH, soil organic-C,                  P-total and P availability, and reduced Alexch concentration. However, the soil pH and P availability were reduced at the rate of bokashi of 40 and 50 t ha-1, but Alexch concentration was increased.
PENGGUNAAN KAYU Cinnamomum burmanni Blume BERDASARKAN SIFAT-SIFAT DASARNYA RAHAYU, Istie Sekartining; WAHYUDI, Imam; YOLANDA, Yoki Putra
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 3, No 1 (2010): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Nowadays wood supplies from natural forest are decreasing.  Many efforts had been done to overcome this problem. One of them was by developing plantation forest, however it has not optimized yet because of many problems. Lately wood supplies were fulfilled by community forest woods.  One of them is cinnamon (Cinnamomum spp.). The research objective was to gain information on anatomical, physical, mechanical and chemical properties of C. burmanni Blume and to analyse its utilization based on these properties. Wood samples used were three logs of 15 years old with 25 cm diameter. It showed that wood texture was fine, between sapwood and heartwood was not distinguished well. Specific gravity was 0.56, while MOE, MOR, and  compressive parallel to grain were 55.731 kg/cm2, 742 kg/cm2, and 392 kg/cm2, respectivelly. Solubility in ethanol benzene was 4.07%, cellulose content  was 48.53%, hemicellulose was 15.71% and lignin was 22.72%. Based on those properties, it could be recommended that C. burmanni wood was suitable enough for furniture, pulp, and light construction purposes.   Keywords :              community forest, Cinnanomum burmanii Blume, wood properties, wood utilization.  
PENGARUH DIAMETER DAN JUMLAH PAKU TERHADAP KEKUATAN SAMBUNGAN GESER GANDA TIGA JENIS KAYU SADIYO, Sucahyo; WAHYUDI, Imam; ., Yeyet
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 4, No 1 (2011): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The use of wood as a construction material is still the primary choice for most Indonesian people. For the purposes of structural construction, it would require a long span of wood, whereas stock in the market is limited, so usually it is overcomed with joint technique which can be done with type of joint and connector. Kind of joint that is needed to be considered seriously is tensile, shear and moment joint. Nail joint is relatively cheap and easy to be done. Variables which are used to see and predict the level of allowable load for a nail joint are diameter and number of nails. Therefore, the objective of this research was to know the influence from the variables to the strength of joints under uni-axial compression loading from 3 wood species. The results showed that double shear connections strength of nangka wood (allowable load per nail and also total load) has the highest value compared with rasamala and sengon. Nangka wood also reached the highest value for maximum crushing strength. Maximum crushing strength had positive relationship with double shear connections strength. Based on the result of this research, maximum crushing strength is applicable to predict the strength of nails.   Keywords   : allowable load, maximum crushing strength, nails, double shear connections, tensile joint
NILAI DISAIN LATERAL SAMBUNGAN GESER GANDA BATANG KAYU TROPIS DENGAN PAKU BERPELAT SISI BAJA SADIYO, Sucahyo; NUGROHO, Naresworo; SURJOKUSUMO, Surjono; WAHYUDI, Imam
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 3, No 1 (2010): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Connection is the weakest point of the structural building system. Structural construction building system must ensure that there is only a tensile force or just axial compression that is working on the connection. Data on the lateral design values (Z) double shear connection wood beam with nails of steel side plates for various types of tropical Indonesian wood have not studied much. Average moisture content (MC) for the main member varies from 13.3 to 22.5% while average specific gravity (r) from 0.27 to 0.76 and then wood density from 0.31 to 0.89 g/cm3. From this average value of MC, SG and wood density the lowest is sengon and the highest is rasamala wood. Average allowable load of compression parallel to grain ( ) and parallel tensile ( )is sengon, but the highest is bangkirai. There is a general tendency that and is linier to r of those wood. is approximately 2 times greater than its .  The number of nail (4-10 pieces) did not give effect of average Z, but with the nail diameter 4.1 to 5.2 mm Z increased significantly and this value decreased on 5.5 mm diameter nail. Average Z also increases with increasing of ρ for  displacement 1.50 mm (Indonesian Standard PKKI NI-5 1961)) and 5.0 mm (breaking load). The increasing of Z happens because ρ effect. At 5.0 mm displacement the increase of Z is not as sharp as that of 1.5 mm. Power regression type is the best equation to predict Z of wood density for several diameters of nails.   Keywords :    Allowable load of tensile parallel to grain, density, displacement, double shear connection, lateral design values
INTERAKSI ANTARA SISTEM FORMAL DENGAN BUDAYA DALAM PENCEGAHAN TINDAKAN KECURANGAN: STUDI KASUS PT BANK X (PERSERO) TBK Maryam, Maryam; Wahyudi, Imam
Media Riset Akuntansi Vol 2, No 2 (2012): Agustus
Publisher : Universitas Bakrie

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Abstract

This  study  intends  to  describe,  explain  and  evaluate  fraud  prevention  system  of    a  state owned bank, namely PT Bank X (Persero) Tbk. Exploiting a case study method, researchers try  to  investigate  events  in  their  natural  contexts.  Data  were  collected  mostly  by  semi-structured  interviews  and  direct  observation  while  one  of  the  researcher  was  doing  on the  job  training  at  the  bank  for  four  months  from  2010  to  2011.  Therefore,  researcher’s own  experience  and  perception  during  the  field  observation  and  interviews  will  influence the  research  process.  The  result  shows  that  the  bank  has  successfully  implemented  three phases of fraud prevention system – detection, investigation and prevention. The interesting finding is that most  fraud cases were  detected by accident, while internal  control, internal audit  and  whistleblower  systems  that  supposed  to  be  the  most  important  devises  to  detect fraud were left behind. Cultural factors such as paternalism might explain the phenomena. Keywords: fraud  prevention  system,  case  study,  bank
PRAKTIK PENGHENTIAN PREMATUR ATAS PROSEDUR AUDIT Wahyudi, Imam; Lucyanda, Jurica; Suhud, Loekman H.
Media Riset Akuntansi Vol 1, No 2 (2011): Agustus
Publisher : Universitas Bakrie

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Abstract

Penelitian ini bertujuan untuk menguji pengaruh time pressure, risiko audit, prosedur review, kontrol kualitas dan komitmen profesional terhadap penghentian prematur atas prosedur audit. Penghentian prematur atas prosedur audit muncul dari situasi yang umumnya disebut sebagai perilaku pengurangan mutu audit (reduced audit quality-RAQ). Pengumpulan data menggunakan metode survei dengan teknik personal kuisioner, di mana kuisioner dikirim ke auditor yang bekerj a di kantor akuntan publik yang berada di Jakarta. Hasil penelitian menunjukkan prosedur audit yang paling sering ditinggalkan saat time pressure adalah uji kepatuhan terhadap sistem komputer on-line klien, sedangkan prosedur audit yang paling jarang ditinggalkan/dihentikan adalah konfirmasi kepada pihak ketiga. Hasil pengujian hipotesis menunjukkan bukti empiris bahwa dari lima variabel bebas yang digunakan dalam memprediksi terjadinya praktik penghentian prematur atas prosedur audit, hanya variabel materialitas yang memiliki pengaruh yang signifikan, sedangkan variabel time pressure, risiko audit, prosedur review, kontrol kualitas,dan komitmen profesional tidak mempunyai pengaruh yang signifikan terhadap penghentian prematur atas prosedur audit. Kata kunci: pengurangan kualitas audit, prematur audit, time pressure, risiko audit, prosedur review dan kontrol kualitas, komitmen profesional, materialitas
PENGARUH PEMBERIAN KAPSUL EKSTRAK GARLIK TERHADAP PERUBAHAN TEKANAN DARAH DAN JUMLAH TROMBOSIT PADA PENDERITA PREEKLAMPSI RINGAN Irwanto, Yahya; Wahyudi, Imam; Soewarto, Soetomo
Jurnal Kedokteran Brawijaya Vol 20, No 3 (2004)
Publisher : Fakultas Kedokteran Universitas Brawijaya

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Abstract

The objectives is to investigate the efectivity of  extract garlic capsule compared to standart therapytoward the changes of blood presure and thrombocyt level in the mild-preeclampsy patients. This study was a single-blind randomised clinical trial. The subject of study were the mild-preeclampsy pregnant women within 20 – 36 weeks of gestational age whose came to the Poli Hamil RSUD dr. Saiful Anwar. The subject divided into 2 groups, the treatment group received both of the standart therapy of mild-preeclampsy and extract garlic capsule, while the controlling grouponly received the standart therapy of mild-preeclampsy. After 2 weeks, the blood pressure and the trombocyt count was evaluated. Thesystolic blood pressure of the treatment group wasdecrease at average of 10.12 mmHg, from 140.25 ± 5.57 before treatment to 130.12 ± 10.84 mmHg after treatment, while in thecontrololling group there was an increase at average of 5.56 mmHg from 140.44± 6.14 mmHg to 146±13.81 mmHg. The T Test and ANCOVA analyzing showed a significant result (P value were 0.001 and0.0008).
KEMITRAAN PEMERINTAH DAERAH DENGAN MASYARAKAT DALAM KEGIATAN PENATAAN LINGKUNGAN PERMUKIMAN BERBASIS MASYARAKAT DI JAWA TENGAH Wahyudi, Imam; Manaf, Asnawi
Jurnal Teknik PWK Vol 2, No 3 (2013): Volume 2 No 3 Tahun 2013
Publisher : Jurusan Perencanaan Wilayah dan Kota

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Abstract

Keberadaan kawasan kumuh sebagai bentuk kemiskinan dalam dimensi keruangan sudah menjadi permasalahan utama kawasan-kawasan perkotaan di Indonesia. Luas kawasan kumuh perkotaan di Indonesia sudah mencapai angka 57.800 Hektar di tahun 2009 dengan pertambahan kantong-kantong permukiman kumuh mencapai 1,37% pertahunnya (BPS, 2011). Banyak pihak mulai menyadari bahwa penyelesaian permasalahan kawasan kekumuhan tidak bisa diselesaikan oleh Pemerintah Daerah saja atau masyarakat saja namun perlu adanya kerjasama dari keduanya. Kegiatan penataan lingkungan berbasis masyarakat lahir sebagai salah satu intervensi yang berupaya membangun kemitraan antara Pemerintah Daerah dengan masyarakat sebagai bentuk kerjasama dalam menata lingkungan tempat tinggal yang kumuh. Penelitian ini mencoba menangkap sejauh mana kemitraan antara Pemerintah Daerah dengan masyarakat terimplementasi di kegiatan tersebut. Kajian ini menjadi perlu dilakukan untuk menggambarkan mengenai keefektifan pelaksanaan kegiatan dalam mengatasi kawasan kumuh dan pembelajaran yang bisa diambil dari kegiatan tersebut. Penelitian ini menggunakan metode penelitian kualitatif studi kasus di dua lokasi penataan di Jawa Tengah. Dari hasil analisis tergambar bahwa kemitraan antara Pemerintah Daerah dengan masyarakat dapat dilihat pada tahap perencanaan partisipatif, dialog komunikasi yang dilakukan, tinjauan perencanaan dan kebijakan di skala kota, dan kegiatan channeling pada tahap pembangunan. Dalam pelaksanaannya keberpihakan Pemerintah Daerah menjadi kunci sukses dari kegiataan penataan lingkungan berbasis masyarakat ini. Dari hasil temuan lapangan dapat disimpulkan bahwa intervensi kegiatan telah mampu menata lingkungan permukiman yang kumuh menjadi lingkungan yang tertata dan juga merubah prilaku masyarakat untuk hidup bersih. Intervensi kegiatan penataan ini dapat terbentuk didasari oleh adanya kemitraan yang terjalin antara Pemerintah Daerah dengan masyarakat.
Co-Authors ,, Rosmini . Arinana . Muhran Abdillah, Abdul Azis Abdillah, Abdul Azis Abror, M. Adhi W, Cahya Ahmad Abdullah Ali Sakti, Ali Ali, Ramlan Ali, Ramlan Andi Ete Apri Heri Iswanto Arianto Arianto Arida Susilowati Arida Susilowati Iswanto Arief Rachmansyah Arifien, Ahmad Faizal Arslan, Ari Syaifudin Asep Hendra Supriatna Asnawi Manaf Atmawi DARWIS Baharudin Baharudin Bahrudin Bahrudin Basir, Muh. Burhanuddin Nasir Cahyono, Tekat D Ceng Asmarahman Christy, Nazha Ali Corryanti Corryanti Danang Widjajanto Dance Tangkesalu Dian Milvita Dicky Kristia Dinata Sinaga Dyah Setyorini Efrida Basri Elsafiana, Elsafiana Erdy Santoso Fajar Joko Santoso Farhan Farhan Fauzan Fahrussiam, Fauzan Fauzi Febrianto Fikdalillah, Fikdalillah G Santosa, G Gustan Pari Hafidhuddin, Didin Hanafie, Sulaeman hariyanto, Jimy hariyanto, Jimy hariyanto, Jimy Hens Saputra Hiroshi Usuki, Hiroshi Husaini, Adian Idris Idris Irkham Ulil Albab Iskandar Z Siregar Iskandar Z. Siregar Isrun AM Nuri Isrun B. Istie Sekartining Rahayu Iswanto, Apri H Jurica Lucyanda Karliati, Tati Kurniawan, Windy Lidia Binti Jasni Lilik Ariyanto Loekman H. Suhud Ludfi Djakfar Mahfudz Mahfudz Maryam Maryam Masahiro Yoshinobu, Masahiro Muhammad Ansar, Muhammad Muhammad Anshar Muhammad Basir muhrozi muhrozi, muhrozi Mustafa Edwin Nasution Naresworo Nugroho Noor Farikhah Haneda O Osnal, O Olivia Andiana Pata’ dungan, Yosep Soge pole, Isnawati A. Prasetyo, M. Budi Prastya, David Purnawati, Renny putra, Dwiyulianto Rachmat Mudiyono, Rachmat Ramadan, Siti Ramlan Ramlan Ratih Damayanti Rias Gesang Kinanti Rima HS Siburian Rizal Edy Halim, Rizal Edy rl, Rifka oktafiani Rohadi, Dede Rosjidi, Mochamad Rosmini Rosmini Rudi Hartono S Suhartoni Safria, Safria Saiful Darman Sely Limbong Rara Shuhou Koseki, Shuhou Sitanggang, Julius Johansen Soetomo Soewarto Sri Anjar Lasmini Sri Wilarso Budi Sucahyo Sadiyo Supriyanto Supriyanto Surjono Surjokusumo Suryadi, Bambang Syarif Ohorella Syarifuddin Syarifuddin Taradilaga, Dwiky Tekat Dwi Cahyono Thaha, Abd. Rahim Totok K Waluyo Trisna PRIADI Ulfah J. Siregar Ulva, Ulva UMI PURWANDARI Uswah Hasanah Wahyu DWIANTO Wasrin Syafii Wayan DARMAWAN Widowati, Ladiyani Windu Partono Yahya Irwanto Yeyet . Yoki Putra YOLANDA Yunianti, Andi D Zainuddin Basri