Respon 2 Varietas Padi (Oryza Sativa L.) Terhadap Pyraclostrobin Dalam Efisiensi Penyerapan Nitrogen

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Rudyanto, Mochamad Yusuf; Basuki, Nur; Kuswanto, Kuswanto

2014-01-01

Penggunaan varietas unggul serta berumur pendek memiliki sifat responsif terhadap aplikasi nitrogen. Pyraclostrobin merupakan fungisida sistemik berbentuk emulsi yang dapat larut dalam air dan memiliki fungsi sebagai Zat Pengatur Tanaman (ZPT) yang dapat menjadi pemicu pertumbuhan dan hasil tanaman. Tujuan dari penelitian adalah mengkaji pyraclostrobin dalam peningkatan efisiensi nitrogen dan produktivitas serta pertumbuhan tanaman padi. Bahan percobaan varietas padi yaitu varietas Ciherang d...

KARAKTERISASI SIFAT-SIFAT BIOKIMIA EKSTRAK KASAR LIPASE EKSTRASELULER BAKTERI Azospirillum sp.PRD1

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Santi Nur Handayani

2011-11-01

Full Text Available Enzim lipase mempunyai peranan penting dalam katalis berbagai reaksi industri satu diantaranya pembuatan flavor melalui reaksi esterifikasi. Lipase adalah biokatalis yang berperan besar dalam aplikasi bioteknologi, seperti dalam sintesis biopolimer, biodiesel, produksi obat, dan produksi flavor. Peningkatan penggunaan lipase untuk industri mendorong dilakukan penelitian untuk mendapatkan sumber-sumber lipase baru. Sumber lipase yang potensial salah satunya adalah bakteri Azospirillum sp.PRD1 dari isolat lokal Laboratorium Mikrobiologi, Fakultas Biologi Universitas Jenderal Soedirman. Tujuan penelitian adalah untuk mendapatkan ekstrak kasar lipase dan menentukan karakteristik sifat-sifat biokimiawinya. Metode yang digunakan antara lain peremajaan bakteri Azospirillum sp.PRD1, dan produksi inokulum, penentuan waktu produksi optimum dan fase pertumbuhan bakteri, ekstraksi dan produksi ekstrak kasar lipase dan penentuan karakteristik sifat-sifat biokimiawinya. Hasil penelitian diperoleh ekstrak kasar lipase dari inokulum berumur 7 jam dan medium produksi dengan induser minyak zaitun yang diinkubasi selama 3 jam memiliki aktivitas spesifik 7,0547 Unit/mg. Lipase ekstrak kasar optimum pada pH 7, suhu 40 oC dan waktu inkubasi selama 25 menit. Lipase merupakan metaloenzim dengan kofaktor Zn2+ , Mn2+, Hg2+, Ca2+, Co2+ and Mg2+.

Beberapa Sifat dari Modul dan Gelanggang dengan Dimensi Goldie Berhingga (Suatu Kajian Pustaka

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Amir Kamal Amir

2012-11-01

Full Text Available Suatu modul M dikatakan mempunyai demensi Goldie berhingga jika modul tersebuttidak memuat suatu jumlahan langsung dari takberhingga banyak submodul-submodultaknol. Sedangkan, suatu gelanggang R dikatakan mempunyai dimensi Goldie kanan berhinggajika gelanggang tersebut mempunyai dimensi Goldie berhingga sebagai suatu modul kanan.Tulisan ini akan menyajikan beberapa sifat dari modul dan gelanggang yang mempunyai dimensiGoldie berhingga. Sifat-sifat tersebut bukanlah merupakan sifat-sifat yang baru. Namundemikian, tulisan ini akan menyajikan pembuktian dari sifat-sifat tersebut dengan cara yanglebih terperinci dan lengkap sehingga lebih mudah dimengerti, terutama bagi pembaca pemuladalam bidang aljabar.

Pembuatan Poros Berulir (Screw) untuk Pengupas Kulit Ari Kedelai Berbahan Dasar 50% Aluminium Profil dan 50% Piston Bekas dengan Penambahan 0,02 % Tib (Titanium Boron)

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Wisnujati, Andika

2016-01-01

Aluminium paduan pada penelitian ini menggunakan campuran Aluminium profil dan piston bekas. Piston bekas digunakan untuk mendapatkan unsur Si yang cukup tinggi pada piston. Penambahan unsur TiB (Titanium-Boron) sebanyak 0,02% pada saat pengecoran diharapkan mampu memperbaiki sifat-sifat mekanis dan fisis aluminium sehingga diharapkan aluminium paduan ini memiliki kekuatan yang jauh lebih baik dibandingkan tanpa penambahan unsur apapun.Paduan aluminium untuk pembuatan screw akan dicor dengan ...

PREVALENCE OF ACINETOBACTER BAUMANNII ISOLATED FROM CLINICAL SPECIMENS IN ADAM MALIK HOSPITAL

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Evita Mayasari; Cherry Siregar

2014-01-01

AbstrakAcinetobacter baumannii merupakan spesies Acinetobacter spp. tersering diisolasi darimanusia, dan lebih sering dijumpai pada infeksi nosokomial dibandingkan dengan infeksi dikomunitas. Eksistensi bakteri ini di lingkungan terkait dengan keragaman reservoir, kemampuanmemperoleh gen pembawa sifat resisten antimikroba, dan sifat resisten terhadap pengeringan.Infeksi disebabkan strain A.baumannii yang resisten terhadap banyak antibiotik tidak mudahdikendalikan dan menjadi permasalahan di b...

TRANSFEKSI MERUPAKAN METODE TEKNOLOGI TRANSGENIK PENYISIPAN GREEN FLOURESCENT PROTEIN TERHADAP IKAN WILD BETTA

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Eni Kusrini

2015-06-01

Full Text Available Teknik transfer gen banyak dikembangkan untuk mengintroduksi molekul DNA ke dalam embrio. Keberhasilan transfer gen menggunakan metode transfeksi ditentukan oleh berbagai faktor, antara lain pemilihan larutan transfeksi yang sesuai dengan mempertimbangkan kesediaan secara komersial, mudah diaplikasikan, keberhasilan tinggi, dan tidak bersifat toksik terhadap embrio. Studi awal untuk mengetahui keberhasilan transfer gen terhadap embrio ikan wild betta digunakan Green Fluorescent Protein (GFP dan juga dapat digunakan sebagai model terhadap ikan betta. GFP merupakan gen yang mengkodekan protein dan memiliki sifat berpendar hijau. Induk jantan dan betina dipijahkan dengan perbandingan 1:1 pada wadah baskom dengan ketinggian air ± 14 cm serta diberikan substrat. Transfeksi dilakukan pada embrio fase pembelahan 2 sel. Larutan transfeksi dibuat dari campuran DNA plasmid pada media NaCl 0.9% hingga mencapai konsentrasi akhir 100 μL media (campuran transfast + DNA + NaCl. Aktivitas gen ini dapat divisualisasikan dengan menggunakan sinar ultra violet. Keberhasilan dari teknik transfer gen tersebut dibuktikan dengan adanya ekspresi gen atau deteksi DNA gen GFP yang dimasukkan. Ekspresi hasil korporasi DNA ke dalam telur melalui transfeksi pada wild betta dan keberhasilan transfer gen GFP dapat dibuktikan dengan analisis PCR. Tujuan dari penulisan makalah ini adalah menguraikan tentang metode transfeksi yang efektif untuk teknologi transfer gen terhadap ikan wild betta.

PENGARUH PERSENTASE PELEPAH KELAPA SAWIT (Elaeis guineensis Jack DAN KULIT DURIAN (Durio Zibethinus Murr TERHADAP SIFAT FISIKA DAN MEKANIKA PAPAN SEMEN

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Violet Burhanuddin

2016-08-01

Full Text Available Penelitian sifat fisika meliputi kerapatan, kadar air, penyerapan air dan pengembangan tebal dan sifat mekanika meliputi keteguhan lentur (MoE keteguhan patah (MoR serta  pengurangan tebal akibat tekanan. Rancangan Percobaan Yang digunakan adalah rancangan acak lengkap (RAL dengan 3 perlakuan yaitu 100% pelepah kelapa sawit; 100% kulit durian dan  50% pelepah kelapa sawit : 50% kulit durian dengan 3 kali ulangan. Standar yang digunakan untuk perbandingan  yaitu SNI–03– 2104-1991-A. Hasil penelitian adalah sebagai berikut : Sifat Fisika yaitu kerapatan rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 0,90 gr/ cm3, 0,91 gr/ cm3, 0,81 gr/ cm3, Kadar air rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 7,37%, 6,59%, 7,08%, Penyerapan air rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 49,51%, 44,99%, 50,11%, Pengembangan tebal rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 1,67%, 2,04%, 3,44%, Kerapatan, kadar air, penyerapan air dan pengembangan tebal tidak berpengaruh nyata. Sifat Mekanika yaitu Keteguhan lentur (MoE rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 7.350,68 kg/cm2, 3.590,43 kg/cm2, Keteguhan patah (MoR rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 11,82kg/cm2, 8,66kg/cm2, 4,53 kg/cm2Pengurangan tebal akibat tekanan rata-rata antara 100% Pelepah Kelapa Sawit, 100% Kulit Durian dan 50% Pelepah kelapa sawit : 50% kulit Durian berturut-turut adalah 8,92 %, 10,01 %, 9,92 %, Keteguhan patah (MoR berpengaruh nyata sedangkan keteguhan

Analisis Pengaruh Beban Terhadap Karakteristik dan Efisiensi Generator Arus Searah Penguatan Kompon Kumulatif dan Kompon Diferensial (Aplikasi pada Laboratorium Konversi Energi Listrik FT-USU)

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Lubis, Syahrizal

2015-01-01

Salah satu jenis generator DC yang cukup banyak digunakan adalah generator DC kompon panjang dan generator DC kompon pendek. Berdasarkan sifat penguatnya terhadap jangkar generator kompon dibagi menjadi dua yaitu generator DC kompon diferensial dan generator DC kompon kumulatif. Pada karakteristik berbeban sebuah generator DC menunjukkan bagaimana hubungan antara tegangan terminal Vt dan arus medan If ketika generator dibebani. Pada generator DC penguatan kompon, peningkatan...

Pengaruh Lama Miling Terhadap Sifat Absorpsi Material Penyimpan Hidrogen MgH2 yang Dikatalisasi Dengan Fe (The Role of Milling Time on the Absorption Behaviour of MgH2 Catalyzed by Fe

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Mustanir Mustanir

2009-12-01

Full Text Available Hidrida logam berbasis MgH2 dengan sisipan 1 wt% katalis Fe telah berhasil disintesis dengan teknik ball milling. Hasil proses miling selama 80 jam menunjukkan bahwa ukuran butir material telah membentuk struktur nanokristal. Hal ini ditunjukkan oleh profil difraksi sinar-X dimana terjadi pelebaran puncakpuncak difraksinya dengan meningkatnya waktu miling. Hasil uji absorpsi secara gravimetrik diketahui bahwa MgH2 berkatalis 1 wt% Fe mampu menyerap hydrogen sebesar 5,5 wt% dalam waktu ~20 menit pada temperatur 300 oC. Hasil ini sekaligus memperlihatkan bahwa sejumlah kecil katalis Fe bekerja secara baik dalam memperbaiki sifat absorpsi material penyimpan hydrogen berbasis Mg.(Metal hydrides are of great interest as hydrogen storage media especially for automotive application. Hydrides of magnesium and magnesium alloys are particularly attractive as they combine potentially high hydrogen storage capacities, 7.6 wt%. But, unfortunately, the sorption properties are poor. For example, conventional hydrogenation of magnesium requires prolonged treatment at temperatures of 300 oC and above. Here, we report the absorption properties of MgH2 catalyzed with a small amount of Fe element (1wt% under argon atmosphere prepared by ball milling in 80 hours. As the results, it showed the influence of milling time on the absortion kinetics of material which could absorp hydrogen in amount 5.5 within 20 minutes at 300 oC. It is obvious that longer milling time and small amount of catalyst could improve the sorption properties of Mg-based hydrides. © 2009 BCREC UNDIP. All rights reserved[Received: 13rd November 2009, Revised: 25th December 2009, Accepted: 31st December 2009][How to Cite: M. Mustanir, Z. Jalil. (2009. Pengaruh Lama Miling Terhadap Sifat Absorpsi Material Penyimpan Hidrogen MgH2 yang Dikatalisasi Dengan Fe (The Role of Milling Time on the Absorption Behaviour of MgH2 Catalyzed by Fe. Bulletin of Chemical Reaction Engineering and Catalysis, 4(2: 69

PENGARUH RASIO RIMPANG RUMPUT TEKI (Cyperus rotundus L. DENGAN JAHE (Zingiber officinale TERHADAP KAPASITAS ANTIOKSIDAN DAN MUTU WEDANG TEKI INSTAN

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Nurwikan Sutralestari

2018-02-01

Full Text Available Tujuan penelitian adalah memperoleh proses pengolahan wedang teki ins­tan, mengetahui kapasitas antioksidan serta mutu (rendemen, waktu rehidrasi, sifat fi­sik warna, dan uji hedonik wedang teki instan dengan rasio rimpang rumput teki dan jahe berbeda. Jenis penelitian yang dilakukan merupakan penelitian eksperimen meng­­­­gunakan Rancangan Acak Lengkap (RAL dengan dua kali pengulangan. Data ha­sil analisis diuji menggunakan ANOVA (Analysis of Variances. Hasil penelitian yang diperoleh menunjukkan wedang teki instan dengan rasio rimpang rumput teki dan jahe yang berbeda berpengaruh terhadap kapasitas antioksidan, waktu rehidrasi, si­­fat fisik warna, serta uji hedonik rasa dan warna. Kapasitas antioksidan dan ke­su­ka­an rasa terbaik  pada wedang teki instan dengan rasio rimpang rumput teki dan jahe 1 : 2½. Waktu rehidrasi tercepat, sifat fisik warna paling cerah dan kesukaan war­­­­na pada wedang teki instan dengan rasio rimpang rumput teki dan jahe 1 : 1½.

Pengaruh Degasser Dan Grain Refiner Terhadap Sifat Mekanik Paduan Al-Si Produk Cor

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Yohanes, Glenn; Djamil, Sofyan

2008-01-01

Paduan aluminium banyak digunakan pada industri otomotif, seperti pada pembuatan velg dan komponen-komponen mesin. Studi pengaruh degasser dan grain refiner terhadap kekuatan tarik, kekuatan luluh, elongasi dan kekerasan, pada proses peleburan dibandingkan dengan atau tanpa menggunakan degasser dan grain refiner. Benda uji didapat dengan melebur blok mesin Mitsubishi L.300, menggunakan tungku listrik dan proses cor sistem cetakan terbuka. Hasil penelitian, meliputi kekuatan tarik, luluh, elon...

Pengaruh Degasser dan Grain Refiner terhadap Sifat Mekanik Paduan Al-Si Produk Cor

OpenAIRE

Yohanes, Glenn; Djamil, Sofyan

2009-01-01

Paduan aluminium banyak digunakan pada industri otomotif, seperti pada pembuatan velg dan komponen-komponen mesin. Studi pengaruh degasser dan grain refiner terhadap kekuatan tarik, kekuatan luluh, elongasi dan kekerasan, pada proses peleburan dibandingkan dengan atau tanpa menggunakan degasser dan grain refiner. Benda uji didapat dengan melebur blok mesin Mitsubishi L.300, menggunakan tungku listrik dan proses cor sistem cetakan terbuka. Hasil penelitian, meliputi kekuatan tarik, luluh, elon...

Sifat Mekanik Membran Berbasis Paduan Kitosan Suksinat-Kitosan Terinsersi Litium

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L.O.A.N Ramadhan

2014-10-01

Full Text Available Sifat mekanik merupakan salah satu karakter yang penting dalam pengembangan material polimer fungsional seperti membran elektrolit yang berpotensi untuk penghantar litium. Dalam penelitian yang telah dilakukan, membran elektrolit disintesis dengan bahan dasar kitosan suksinat dan kitosan, serta litium. Membran dipreparasi melalui metode inversi fasa dengan variasi komposisi fraksi massa kitosan suksinat dan kitosan. Selanjutnya dilakukan uji sifat mekanik. Hasil penelitian menunjukkan bahwa peningkatan fraksi massa kitosan suksinat sampai dengan 60% (b/b cenderung meningkatkan kekuatan tarik dan perpanjangan, serta menurunkan Modulus Young. Pada fraksi massa kitosan suksinat 70% (b/b sampai dengan 80% (b/b, kekuatan tarik dan perpanjangan cenderung menurun, serta Modulus Young meningkat. Nilai maksimum kekuatan tarik, perpanjangan, dan Modulus Young masing-masing adalah 0,18 MPa, 112 %, dan 14,31 MPa. Berdasarkan hasil analisis sifat mekaniknya, membran paduan kitosan suksinat-kitosan terinsersi litium memiliki stabilitas mekanik yang cukup baik. 

Pengaruh Massa Zn Dan Temperatur Hydrotermal Terhadap Struktur Dan Sifat Elektrik Material Graphene

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Muhammad Rizki Ilhami

2014-09-01

Full Text Available Kemajuan teknologi yang sangat berkembang pada saat ini membutuhkan material yang tidak hanya kecil ataupun ringan, tetapi juga memiliki sifat thermal, elektrik, dan mekanik yang baik. Graphene adalah material yang dapat menjawab kebutuhan hal tersebut. Permasalahan yang kemudian muncul adalah proses sintesis massal yang masih menjadi kendala. Penelitian ini bertujuan untuk mensintesis material graphene dengan metode hydrothermal dan menggunakan serbuk Zn sebagai reduktor. Penelitian ini menganalisa pengaruh varaiasi penambahan massa sebesar 0,8 gram, 1,6 gram, dan 2,4 gram zinc serta variasi temperatur hydrthermal 160ᵒC, 180ᵒC, 200ᵒC. Proses karakterisasi material graphene dilakukan dengan pengujian Scanning Electron Microscope (SEM, X-Ray Diffraction (XRD, Fourier Transform Infraredspectroscopy, Thermo Gravimetric Analysis/Differential Scanning Calorimetry (TGA/DSC, dan Four Point Probe digunakan untuk mengetahui nilai konduktivitas elektrik material. Morfologi dari graphene yang dihasilkan berbentuk lembaran-lembaran transparan dan tipis yang saling menumpuk.Semakin banyak serbuk Zn yang diberikan menjadikan permukaan graphene semakin tipis. Nilai konduktivitas elektrik terbesar dihasilkan dari variasi panambahan serbuk zinc sebesar 2,4 gram dan temperatur hydrothermal sebesar 180ᵒC dengan nilai sebesar 0,012526 S/cm.

PEMBUATAN DAN KARAKTERISASI MEMBRAN HIBRIDA KITOSAN-SILIKA- PEG

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F Widhi Mahatmanti

2013-02-01

Full Text Available Membran kitosan mempunyai efektivitas pemisahan relatif tinggi tetapi kestabilan mekanik rendah. Untuk meningkatkan kestabilan perlu ditambahkan silika sehingga dihasilkan membran kitosan-silika. Sebagai bahan dasar silika digunakan natrium silikat yang diisolasi dari abu sekam padi. Dalam pembuatan membran kitosan-silika, plasticizer (polietilen glikol/PEG digunakan untuk meningkatkan kestabilan mekanik membran secara signifikan. Pembuatan membran kitosan-silika-PEG dilakukan dengan cara penguapan larutan dan pencetakan. Membran kitosan-silika-PEG dikarakterisasi sifat mekaniknya dengan menguji kekuatan tarik, persen perpanjangan dan Modulus Young, perubahan gugus fungsi, morfologi, sifat kristalinitas, kestabilan terhadap suhu, sifat hidrofilisitas, dan uji terhadap fluks air. Hasil penelitian menunjukkan bahwa membran kitosan-silika dengan komposisi kitosan/silika 1:0,8 mempunyai harga kuat tarik optimum. Penambahan PEG akan meningkatkan harga persen perpanjangan, tidak menunjukkan perubahan yang signifikan pada hasil uji FTIR dan XRD, tetapi meningkatkan sifat hidrofil seiring dengan meningkatnya konsentrasi PEG dan pH. Nilai Fluks air menurun dengan meningkatnya konsentrasi PEG, dimungkinkan PEG terjebak secara fisik dalam padatan komposit.

PENGARUH BERBAGAI KECAMBAH KACANG-KACANGAN LOKAL SEBAGAI BAHAN DASAR MEAT ANALOG TERHADAP SIFAT FISIK (TEKSTUR, KESUKAAN DAN RASIO ARGININ/LISIN

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Bayu Kanetro

2013-06-01

kedelai. Meat analog dibuat dari protein berbagai kecambah kacang-kacangan lokal, yaitu kacang kara benguk, tunggak, dan kecipir yang dikecambahkan berturut-turut selama 48, 36 dan 24 jam. Protein kecambah kacang kara benguk, tunggak dan kecipir untuk memproduksi meat analog diekstraksi pada pH 9, selanjutnya dipresipitasi berturut-turut pada pH 4, 5, dan 4. Produk-poduk yang diperoleh dianalisis tekstur, sifat sensoris (tingkat kesukaan terhadap warna, tekstur, bau, rasa dan keseluruhan, dan rasio arginin/lisin. Karakteristik meat analog dari berbagai kecambah kacang-kacangan lokal tersebut dibandingkan dengan meat analog dari biji kedelai untuk menentukan jenis kecambah terbaik sebagai bahan dasar meat analog. Hasil penelitian menunjukkan bahwa karakteristik meat analog kecambah kacang tunggak dan kecipir lebih baik dibandingkan meat analog dari kecambah kara benguk. Meat analog dari biji kedelai masih lebih baik daripada meat analog dari kecambah kacang-kacangan, khususnya teksturnya. Kandungan arginin yang diketahui sebagai komponen hipokolesterolemik dan hipoglisemik pada meat analog kecambah kacang tunggak ternyata lebih rendah daripada meat analog kedelai, tetapi rasio arginin/lisinnya tidak berbeda nyata. Sedangkan rasio arginin/lisin meat analog dari kecambah kacang-kacangan lainnya lebih rendah daripada meat analog dari biji kedelai. Oleh karena itu meat analog dari kecambah kacang tunggak dipilih sebagai produk terbaik dan berpotensi sebagai pangan fungsional utamanya untuk menurunkan kolesterol darah. Kata kunci: Meat analog, kecambah, kacang-kacangan lokal, rasio arginin/lisin

Studi Penggunaan Plat Elektroda Netral Stainless Steel 316 dan Aluminium Terhadap Performa Generator HHO Dry Cell

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Tasrif Arifin

2015-12-01

Full Text Available Abstrak. Generator HHO merupakan alat yang menggunakan prinsip elektrolisis air untuk memisahkan unsur-unsur kandungan air murni (H2O menjadi Gas HHO, dalam upaya peningkatan performanya tentu dibutuhkan bahan konduktor yang memiliki sifat kelistrikan baik. Penambahan plat elektroda netral ialah bertujuan untuk meningkatkan performa elektroliser dan mengatasi berbagai macam permasalahan yang terjadi pada saat proses elektrolisis air bekerja. Penelitian ini menunjukkan bahwa plat elektroda netral aluminium mampu meningkatkan nilai performanya sedangkan untuk plat SS 316 mampu meminamalisir persentase losses energy. Larutan AMDK murni terbukti mampu meningkatkan produktivitas gas dibandingkan dengan larutan aquades murni, tetapi kelemahan dari larutan AMDK yaitu mudahnya terbentuk gel-gel, sehingga menghambat pergerakan elektron dan laju aliran produksi. Karateristik sifat bahan sangat berpengaruh terhadap pencapaian kinerja Generator HHO karena tidak semua jenis plat elektroda netral mampu meningkatkan performanya. Sifat-sifat kelistrikkan bahan yang sangat berpengaruh ialah sifat keelektronegatifan atau potesial elektroda dan koefisien nilai muai dari suatu bahan konduktor.   Usage Study Neutral Electrode Plate Stainless Steel 316 and Aluminium of Performance Generator HHO Dry Cell Type Abstract. Generator is a tool that use principle of water electrolysis to separated the element of pure water conscience (H2O be HHO gas, in effort to increase the perform of HHO Generator is needed a conductor ingredients which has a good electricity character the direction of addition neutral electrode plate is to increase the electrolyzer perform and to overcome every problem that happen when the water electrolisys process is going. This research shows that neutral electrode aluminium plate can increase the performance value and the SS 316 plate can minimize the percentage of losses energy. The pure AMDK solution proofs that can increase the gas productivity

Perbaikan Sifat Laju Transmisi Uap Air dan Antibakteri Edible Film dengan Menggunakan Minyak Sawit dan Jeruk Kunci

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Budi Santoso

2018-01-01

Full Text Available The objective of the research was to improve water vapor transmission rate and antibacterial properties of edible film by using red palm oil and Citrus mitis. The research design was factorial completely randomized design with three replications. There were three studies: the addition of Uncaria gambir Roxb extract, palm oil concentration, and pH value at the concentration 0, 1.5, and 3 (% w/v; 0, 1.5, and 3 (% v/v; and 3, 4, 5, and 6 respectively. The results showed that interaction of Uncaria gambir Roxb extract, palm oil and pH had significant effected on solubility of edible film. Interaction of Uncaria gambir Roxb and palm oil had significant effected on thickness, percentage of elongation and solubility of edible film. Interaction of Uncaria gambir Roxb and pH had significant effected on solubility of edible film. Characteristic of edible film was produced thickness 0.15 to 0.28 mm, percentage of elongation 23.33 to 87.78%, solubility 33.9 to 49.16%, water vapor transmission rate 3.43 to 8.52 g.m-2.d-1, and inhibition zone for Staphylococcus aureus 0.2 to 8.2 mm. ABSTRAK Tujuan penelitian adalah untuk memperbaiki laju transmisi uap air dan sifat antibakteri edible film dengan menggunakan minyak sawit dan jeruk kunci. Rancangan penelitian yang digunakan adalah rancangan acak lengkap faktorial dengan tiga kali ulangan. Perlakuan terdiri atas konsentrasi ekstrak gambir; 0, 1,5, dan 3 (% b/v, konsentrasi minyak sawit; 0, 1,5, dan 3 (% v/v, dan pH (3, 4, 5, dan 6. Hasil penelitian menunjukkan bahwa interaksi ekstrak gambir, minyak sawit, dan derajat keasaman (pH berpengaruh nyata terhadap kelarutan edible film. Interaksi ekstrak gambir dengan minyak sawit berpengaruh nyata terhadap ketebalan, persen pemanjangan, dan kelarutan edible film. Interaksi minyak sawit dengan derajat keasaman (pH berpengaruh nyata terhadap kelarutan edible film. Interaksi ekstrak gambir dengan derajat keasaman (pH berpengaruh nyata terhadap kelarutan edible film

Peningkatan Sifat Mekanik Kawat Anyam (Wire Mesh) Baja Melalui Proses Pelapisan Nikel

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Widagdo, Baskara Surya; Sulistyo, Sulistyo

2017-01-01

Teknologi pelapisan logam telah berkembang dengan pesat. Metode yang dikembangkan bervariasi. Salah satu tujuan teknologi pelapisan logam adalah untuk meningkatkan kualitas logam baik dari sifat ketahanan korosi maupun peningkatan ketahanan sifat mekanik seperti tahan aus maupun kekuatan tarik logam tersebut. Paper ini membahas tentang teknologi pelapisan logam berbentuk kawt anyam (wire mesh) menggunakan lapisan nikel. Kawat anyam dibersihkan dengan larutan HCl dan dicuci dengan air sabun ke...

SIFAT FISIKA DAN KETEGUHAN PATAH PAPAN SEMEN PARTIKEL DARI PELEPAH KELAPA SAWIT (Elaeis guineensis Jack

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Violet Burhanuddin

2016-08-01

Full Text Available Penelitian ini bertujuan untuk mengetahui kemungkinan pemanfaatan pelepah kelapa sawit sebagai bahan baku papan semen partikel dan untuk mengetahui sifat fisika dan mekanika papan semen partikel pada berbagai perbandingan semen dan partikel dari dua merek semen (Tonasa dan Tiga Roda. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL dengan pola faktorial 2 x 3 sebanyak 5 kali ulangan, dimana faktor A adalah merek semen yaitu semen tonasa dan semen Tiga Roda kemudian faktor B adalah perbandingan antara partikel dan semen. Hasil pengujian sifat fisika dan mekanika masing-masing menunjukan pengaruh yang sangat berbeda nyata, hal ini disebabkan karena semakin banyak penambahan jumlah perekat semen maka semakin baik pula sifat fisika dan mekanika papan semen yang dibuat, sedangkan untuk faktor merek semen tidak menunjukan perbedaan yang nyata. Kata kunci : Pelapah kelapa sawit, sifat fisika dan mekanika, papan semen partikel

DIMENSI FEMINIS TUHAN: Paradigma Baru bagi Kesetaraan Gender

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Tri Astutik Haryati

2013-05-01

Full Text Available Gender inequality seringkali dianggap devine creation (segalanya bersumber dari Tuhan. Di sinilah teologi Islam sebenarnya mendapat batu ujian. Karena teologi seharusnya merupakan refleksi kritis agama terhadap permasalahan yang dihadapi masyarakat sehingga tidak hanya bicara tentang konsep ketuhanan, tetapi  yang metafisik diterjemahkan kepada persoalan sosial terutama persoalan perempuan. Lebih tepatnya, teologi perempuan adalah teologi yang menggali aspek-aspek feminim Tuhan demi kesetaraan jender. Penelitian ini berusaha melacak akar-akar teologis perempuan serta mengekplorasi sifat-sifat feminim Tuhan agar kesetaraan gender dapat tercipta.  Perendahan terhadap kualitas feminim perempuan bernilai sama dengan pengabaian kualitas feminim Tuhan. Atas dasar hal tersebut, diskriminasi jender sesungguhnya tidak memiliki legitimasi teologis tetapi justru pengingkaran terhadap Tuhan secara utuh. Alasannya, relasi jender secara mengesankan telah direpresentasikan oleh Tuhan sendiri.

PENGARUH PENDIDIKAN KEWIRAUSAHAAN DI LINGKUNGAN KELUARGA, PEMBELAJARAN KEWIRAUSAHAAN DI SEKOLAH, SERTA ACHIEVEMENT MOTIVE TERHADAP MINAT KEWIRAUSAHAAN SISWA SMA

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Eny Eko Sulistyowati

2016-11-01

menunjukkan bahwa (1 pendidikan kewirausahaan di lingkungan keluarga berpengaruh terhadap minat kewirausahaan siswa, (2 pembelajaran kewirausahaan disekolah dengan menggunakan media pembelajaran memiliki pengaruh terhadap minat kewirausahaan siswa, (3 achievement motive berpengaruh signifikan terhadap minat kewirausahaan siswa. Berdasarkan pada temuan penelitian tersebut, dapat disarankan (1 kepada orangtua siswa untuk terus mengajarkan anak-anak sedini mungkin untuk memiliki sifat-sifat seorang wirausaha serta mendukung anak ketika memilih menjadi wirausaha daripada menjadi pegawai, (2 kepada pihak sekolah, diharapkan dalam melakukan pembelajaran kewirausahaan, dapat mengikuti perubahan pada dunia usaha, menggunakan media belajar yang bervariasi dan meningkatkan motivasi siswa untuk mencoba menjadi wirausaha dengan menggunakan media pembelajaran yang tepat di sekolah.

Pemanfaatan Vinasse -Limbah Industri Alkohol- untuk Perbaikan Sifat Fisik Tanah dalam Pengembangan Tebu (Saccharum officinarum L di Lahan Pasir Pantai

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M. Zulfan Arrodli

2016-05-01

Full Text Available Lahan pasir pantai merupakan lahan bermasalah untuk pertanian karena sifat tanahnya tidak mendukung pertumbuhan tanaman dan vinasse merupakan limbah industri ethanol yang jumlahnya sangat besar yang apabila dibuang di lahan terbuka akan mencemari lingkungan. Penggunaan vinasse sebagai bahan perbaikan tanah tanpa memberikan pengaruh negatif kemungkinan dapat dikerjakan untuk tanah bertekstur kasar seperti tanah di lahan pasir pantai. Oleh karena itu dalam penelitian ini, vinasse akan dicoba digunakan untuk membudidayakan tebu pada media tanah yang diambil dari lahan pasir pantai. Penelitian menggunakan pendekatan percobaan pot faktorial 4x4 yang disusun dalam rancangan lingkungan acak lengkap dengan 3 ulangan. Hasil penelitian menunjukkan bahwa pemberian vinasse dengan dosis 60.000 l/ha hanya sekali pada awal penanaman tebu mampu memperbaiki kemampuan tanah menyimpan air. Vinasse terbukti tidak memberikan pengaruh kurang baik terhadap tanaman yang dibudidayakan, bahkan pemberian vinasse cenderung memperbaiki pertumbuhan tebu baik dilihat pada tinggi tanaman, diameter batang, berat kering akar dan tajuk, meskipun pengaruhnya tidak berbeda nyata.

PENGARUH SIFAT FISIK TANAH PADA KONDUKTIVITAS HIDROLIK JENUH DI 5 PENGGUNAAN LAHAN (STUDI KASUS DI KELURAHAN SUMBERSARI MALANG Effect of Soil Physical Properties on Saturated Hydraulic Conductivity in The 5 Land Use (A Case Study in Sumbersari Malang

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Elsa Rosyidah

2013-11-01

physical properties, SHC, water movement in soil, infiltration   ABSTRAK Pergerakan air dalam tanah jenuh akan mempengaruhi limpasan dan infiltrasi pada suatu daerah, sedangkan proses pergerakan air dalam tanah dipengaruhi oleh sifat-sifat fisik tanah. Perubahan penggunaan lahan sangat mempengaruhi sifat-sifat fisik tanah. Perubahan penggunaan lahan dan perbedaan sifat – sifat dasar tanah yang meliputi alih fungsi lahan yang semula ada vegetasi menjadi lahan yang tak ada atau minim vegetasi mengakibatkan laju infiltrasi dan perkolasi pada tanah menjadi berubah dan memungkinkan terjadinya proses infiltrasi yang cukup besar, menyebabkan semakin berkurangnya daerah resapan air hujan secara langsung dan penurunan ketersediaan air tanah. Pengukuran pergerakan air dalam tanah kondisi jenuh atau Konduktivitas Hidrolik Jenuh tanah (KHJ sangat penting karena KHJ berperan dalam penentuan limpasan air, infiltrasi, dan perkolasi. Penelitian bertujuan untuk mengetahui besarnya nilai konduktivitas hidrolik jenuh tanah di berbagai penggunaan lahan dengan menggunakan metode constant head dan sifat fisik tanah meliputi tekstur tanah, berat isi, berat jenis, dan porositas di 5 penggunaan lahan pada 3 kedalaman tanah yang berbeda. Penelitian dilaksanakan di area Kelurahan Sumbersari pada bulan Desember 2008 hingga bulan Oktober 2009. Penelitian pengaruh sifat fisik tanah terhadap KHJ dengan menggunakan metode constant head pada 5 penggunaan lahan yaitu pemukiman penduduk (T1, lapangan (T2, kebun tomat (T3, semak belukar (T4, sawah irigasi (T5 pada 3 kedalaman yang berbeda yaitu 0-15 cm (K1, 15-30 cm (K2, dan 30-45 cm (K3. Sifat fisik tanah yang dianalisis antara lain tekstur tanah, berat isi, berat jenis, porositas, dan kadar air tanah. Hasil penelitian menunjukkan bahwa nilai KHJ tertinggi pada seluruh titik lokasi adalah lokasi sawah irigasi dengan kedalaman 30-45 cm. Faktor utama yang mempengaruhi nilai KHJ adalah nilai berat isi. Sifat-sifat fisik tanah yang mempengaruhi nilai KHJ

KEJAHATAN KERAH PUTIH (WHITE COLLAR CRIME TERHADAP ILLEGAL LOGGING DI SUMATERA UTARA

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Muhammad R. Dayan

2017-08-01

Full Text Available Pemerintah membuat kebijakan terhadap tindak pidana Illegal logging disebabkan kegiatan illegal logging merupakan serangkaian tindakan penyimpangan perilaku yang berdampak kepada ekosistem secara berkelanjutan yang pada akhirnya berakibat dan membahayakan keberlangsungan hidup manusia. Sebagai suatu patokann (standar untuk menilai dan dikenakan sanksi pidana. Oleh karenya memerlukan penanggulangan baik secara preventif maupun represif. Pertanggungjawaban pelaku kejahatan kerah putih terhadap illegal logging adalah penerapan atas hukum yang meminta pertanggungjawaban pelaku tanpa membuktikan adanya unsur kesalahn atau adanya unsur kesalahan pada si pelaku tindak pidana. Hal ini disebabkan KUH Pidana mengandung unsur adanya asas mens rea (asas kesalahan dan tentang pertanggungjawbana pidana berorientasi kepada manusia atau orang bukan korporasi istilah “daad-dader straftrecht” artinya hukum pidana yang memperlihatkan segi-segi objektif dari “perbuatan” (daad dan juga segi-segi subjektif dari orang/pembuat (dader. Sifat hukum demikian akan menggambarkan keseimbangan antara kepentingan masyarakat dan kepentingan individu. Upaya penegakan hukum untuk menanggulangi kejahatan illegal logging adalah menggunakan perangkat undang-undang money laundering, hal ini disebabkan perangkat hukum memungkinkan actor intelektual yang mendanai kegiatan tersebut dapat terjerat oleh hukum. Oleh karenanya dalam tindak pidana pencucian uang adanya kerja sama antara Lembaga Penyedia Jasa Keuangan atas indikasi pencucian uang dan Pusat Pelapor dan Analisis Transaksi Keuangan (PPATK serta Penyidik (kepolisian dan Penuntut Umum.

SIFAT FUNGSIONAL ISOLAT PROTEIN ‘BLONDO’ (COCONUT PRESSCAKE DARI PRODUK SAMPING PEMISAHAN VCO (VIRGIN COCONUT OIL DENGAN BERBAGAI METODE

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Siti Permatasari

2015-11-01

OHC tidak menunjukkan perbedaan yang signifikan antar metode (p≤ 0,05. Hasil penelitian ini menyimpulkan bahwa metode fisik menghasilkan sifat fungsional terbaik. Kata kunci: Sifat fungsional, isolat protein, blondo, VCO

KARAKTERISASI SIFAT FISIKOKIMIA DAN FUNGSIONAL FRAKSI PATI UWI UNGU (DIOSCOREA ALATA

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Lula Nadia

2015-04-01

Full Text Available ABSTRACTSize fractionation of yam starch granule could be achieved through dry sieving Retsch Siever with 400 and 500 mesh. Although the fractionation was not completely separate the granule size, however it could provide a significant difference in average size of the fractions. Starch granule morphology, size distribution, amylose and phosphorus contents, crystal structure, thermal properties, and rheological characteristic of the starch fraction were evaluated. In this study, based on the average value of the granule size, significant effects of fraction were obtained on phosphorus content and relative crystallinity of the starch. The size fraction differences did not give a significant impact on its gelatinization character, while in the pasta formations the effect of the fraction was found in peak and final viscosity. In the bigger size fraction, the phosphorus content increased but the relative crystallinity decreased. These differences made the large size fraction of starch granule had the advantage in paste profiling than starches and fractions against stirring, heating and cooling for its potential use in food processing as thickner.Keywords: dioscorea alata, starch, size fractionation, size distribution, viscoelastisityABSTRAKFraksinasi ukuran granula pati uwi dapat dicapai dengan menggunakan pengayakan kering Retsch Siever 400 dan 500 mesh. Meskipun metode fraksinasi ini tidak sempurna memisahkan ukuran granula, tetapi dapat memberikan perbedaan yang signifikan dari nilai rerata ukuran fraksi. Penelitian ini bertujuan untuk mengevaluasi morfologi granula, distribusi ukuran, kandungan amilosa, kadar fosfor, struktur kristal dan kristalinitas relatif, sifat termal, serta karakteristik rheologi dari fraksi pati. Penelitian menunjukkan, berdasarkan nilai rerata ukuran granula, pengaruh signifikan dari fraksi diperoleh pada kandungan fosfor dan kristalinitas relatif pati. Perbedaan ukuran fraksi granula tidak cukup memberi pengaruh yang

Potensi Arang Hasil Pirolisis Tempurung Kelapa sebagai Material Karbon

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Meytij Jeanne Rampe

2015-01-01

Full Text Available Telah dilakukan kajian pengembangan material karbon dari arang hasil pirolisis tempurung kelapa. Penelitian bertujuan mempelajari penggunaan polivinil alkohol (PVA sebagai stimulan dalam pengembangan arang terhadap sifat-sifat fisikokimia material karbon. Kalsinasi, pencampuran, dan sintering temperatur tinggi dilakukan pada proses penerapan teknologi karbon. Metode analisis X-ray Diffraction (XRD, Scanning Electron Microscopy (SEM, Energy Dispersive Spectroscopy (EDS untuk pengujian struktur kristal, topografi permukaan berupa struktur mikro dan analisis unsur material karbon. Karakteristik produk material karbon menunjukkan perubahan karakter di mana terjadi perubahan sifat fisikokimia dari arang amorf menjadi karbon dengan struktur semi-kristalin.Kata kunci: Arang, Tempurung Kelapa, Pirolisis, Karbon

KONDISI SIFAT FISIK DAN KIMIA TANAH PADA BEKAS TAMBANG NIKKEL SERTA PENGARUHNYA TERHADAP PERTUMBUHAN TRENGGULI DAN MAHONI

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Merryana Kiding Allo

2017-06-01

Full Text Available Mining activities through land clearing, dredging and backfilling will lead to changes in the ecosystem. Land conditions badly damaged among other unproductive, high erosion and loss of top soil layer of soil. The physical properties of the soil pH is acid soil, the texture increased dust causes soil compacted is difficult to be processed and chemical properties of the soil decreased to lower and lower, that it can not support the root system of plants and would affect the plant growth is not normally. The need for nutrients origin of organic fertilizers and inorganic fertilizers combined with the planting hole and alcosorb can spur the growth of trengguli and mahoni that is expected to speed up the recovery process mined lands of nickel. Planting  trengguli and mahogany produced by percentage grew to 95% by using a experiments using completely randomized design (CRD with a combination of the size of the hole, the dosage of fertilizer and alcosorb on trengguli and mahoni plants produce the best height and diameter growth on the kind trengguli obtained from treatment of the planting hole size 0.30 mx 0.40 mx 0.30 m ( A2 15 kg of organic fertilizer (B3 with alcosorb 3 gr and the best diameter growth in mahoni generated by the use of manure dosage of 7.5 kg and 7.5 gr NPK (B2. Kegiatan penambangan secara land clearing, pengerukan dan penimbunan  akan menyebabkan perubahan ekosistem. Kondisi lahan rusak berat antara lain tidak produktif, terjadi erosi berat dan hilangnya lapisan top soil tanah. Sifat fisik fisik pH tanah menjadi masam, tekstur debu meningkat menyebabkan pemadatan tanah sukar diolah dan sifat kimia tanah menurun menjadi makin rendah, sehingga tidak dapat mendukung sistem perakaran tanaman dan akan berdampak pertumbuhan tanaman tidak normal. Kebutuhan akan unsur hara asal pupuk organik maupun pupuk anorganik yang dikombinasikan dengan lubang tanam dan alcosorb dapat memacu pertumbuhan tanaman jenis trengguli dan mahoni yang

Pengaruh Kecepatan Pengadukan dan Kehalusan Gambir Serta Variasi Komposisi Terhadap Beberapa Sifat Fisika dalam Pembuatan Tinta Cetak

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Hendri Muchtar

2015-12-01

Full Text Available Ink is a very important element that determines the quality of a printout. One of the potential natural materials that can be used as a raw material for making printing ink is gambier.The objective of this study was to observe the effect of stirring speed and particle size on some physical properties in the printing ink. The ink manufacturing was done in 2 phases, namely the manufacture of color pigment and ink formulation. Pigment ink was made by cleaning the gambier through dilution with hot water, filtration, and precipitation of fitrat. Furthermore the gambier was mashed with particle size variation 40, 60, 80 mesh. The adding saturated FeCl3 compounds in ethanol into the extract gambier slowly with stirring speed 250, 500, 750 rpm for 4 hours. The color of the pigment, viscosity, and the particle size was tested by using the PSA method (particle size analyzer. Manufacture of ink formula with additives propylene glycol 7.5; 10; 12.5 mL and polyethylene glycol 0.1; 0.3; and 0.5 mL for every 30 ml of extract gambier in ethanol. Best pigment was obtained from the use of gambier 60 mesh powder, stirring speed 250 rpm, the smallest pigment particle was 47.54 nm. The best ink formula was using propylene glycol and polyethylene glycol 12.5 mL and 0.5 mL. The characteristics of ink were black colored ink with a density 0.9633 at a temperature of 28-30°C, viscosity 0.9 cP, and surface tension 0.2539 N/m.ABSTRAK Tinta merupakan unsur yang sangat penting menentukan kualitas hasil cetakan. Salah satu bahan alam potensial yang dapat dijadikan sebagai bahan baku pembuatan tinta cetak adalah gambir. Penelitian ini bertujuan untuk mengamati pengaruh kecepatan pengadukan dan kehalusan bahan baku gambir terhadap beberapa sifat fisika dalam pembuatan tinta cetak. Pembuatan tinta dilakukan 2 tahap yaitu pembuatan pigmen dan formula tinta. Pigmen tinta dibuat dengan cara membersihkan  gambir melalui pelarutan dengan air panas, penyaringan, dan pengendapan

Karakterisasi Parsial Streptomyces spp., Agens Pengendali Hayati Peyakit Lincat Tembakau

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Triwidodo Arwiyanto

2007-12-01

Full Text Available Local isolates of Streptomyces spp. were proven could suppress "lincat disease" of tobacco in the field. Six isolates were chosen for partial characterization of their bacteriological properties as based for the next experiments purposes. The results indicated that the isolates produce miselium with spore chains, gram positive, aerob, catalase and oxidase positive. The isolates also hydrolize starch, gelatine and esculine; produce lecithinase enzyme, reduce nitrate to nitrite, do not produce melanine pigment, did not produce hydrogen sulfide. The isolates were sensitive against streptomycine and rifampicin; able to use several carbon and nitrogen sources tested. Capable to grow on several medium pH, from 4,3 to 8,0. The isolates were able to grow from 5° C to 45° C; able to grow on medium containing 4% to 7% NaCl and ion the medium containing 0,1% of phenol. Plant pathogenicity test result showed negative responses which indicated that the used isolates were non plant pathogenic. The ability in suppressing lincat pathogen (Ralstonia solanacearum and Meloidogyne incognita in vitro was vary between isolates.   Streptomyces spp, isolat lokal terbukti dapat menekan penyakit lunvat tembakau di lapangan. Sebanyak enam isolat dipilih untuk dicirikan sebagai sifat-sifat bakteriologinya sehingga dapat digunakan sebagai dasar dalam penelitian berikutnya. Penelitian dilakukan terhadap sifat morfologi, fisiologi dan sifat biokimia. Hasil penelitian menunjukkan bahwa isolat yang diteliti menghasilkan miselium yang memproduksi rangkaian spora, Gram positif, aerob, katalase dan oksidase positif. Isolat-isolat tersebut menghidrolisis pati, gelatin, eskulin; membentuk ensim lechitinase, mereduksi nitrat menjadi nitrit, tidak menghasilkan pigmen melanin, tidak membentuk hidrogen sulfida. Isolat yang diteliti peka terhadap antibiotik streptomisin dan nifampisin; mampu menggunakan beberapa sumber karbon dan sumber nitrogen yang diujikan, Kisaran pH untuk

Simulasi Sifat Fisis Model Molekuler Dinamik Gas Argon dengan Potensial Lennard-Jones

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Wira Bahari Nurdin

2014-01-01

Full Text Available DOWNLOAD PDFTelah  dilakukan  pembuatan  dan  pengujian  suatu  simulasi  tentang  sifat  fisis  gasargon  dengan  menggunakan  dinamika  molekuler  menggunakan  potensial Lennard-Jonesdalam sistem terisolasi (ensemble mikrokanonik. Jumlah molekul, energi total sistem danluas  kotak  simulasi  telah  divariasikan.  Untuk  menghitung  perubahan  posisi  digunakanalgoritma Verlet. Sifat fisis yang ditentukan dalam simulasi adalah temperatur dan energitotal  sistem  untuk  menentukan  adanya  fase  transisi.  Dari  hasil  simulasi,  terdapatkesesuaian antara simulasi dengan gas argon dan tidak diperoleh adanya fase transisi.Kata kunci: Simulasi dinamika molekul, argon, potensial Lennard-Jones, ensemblemikrokanonik, algoritma Verlet

Peningkatan Aktivitas Antijamur Candida Albicans Salep Minyak Atsiri Daun Sirih (Piper Bettle Linn.) melalui Pembentukan Kompleks Inklusi dengan B-siklodekstrin

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Astuti, Ika Yuni; Hartanti, Dwi; Aminiati, Ani

2010-01-01

Minyak atsiri daun sirih (Piper betle Linn.) memberikan aktifitas antimikroba terhadap Candida albicans (Wirna, 2006). Sifat minyak atsiri adalah kurang stabil terhadap suhu tinggi, cahaya, dan oksigen. Untuk menjaga kestabilan dan memudahkan penanganan minyak atsiri dalam pembuatan sediaan, dapat dilakukan pembuatan kompleks inklusi minyak atsri dengan b-siklodekstrin (Szejtli, 1989). Hal ini mendorong penulis untuk meneliti tentang pengaruh pembentukan kompleks inklusi minyak atsiri daun si...

Isolasi dan Karakterisasi Sifat Pati Kacang Hijau (Vigna radiata L. Beberapa Varietas Lokal Indonesia

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Priyanto Triwitono

2017-09-01

Full Text Available Mung beans is a kind of legumes that possesses a potential  amylose to produce low calories RS-3. Studies on the characteristics of the starch will be useful for the treatment of obesity in the future. Isolation and characterization of the properties of mung bean starch of 4 local Indonesian varieties (Walet, Sriti, Murai, and Vima-1 have done. Isolation of starch using a modified method of Hoover. The analyzed properties of starch consist of starch content, amylose content, granular shape, color, swelling power, WHC, the blue value, amylograph and crystallinity properties. The results indicated that the mung bean varieties Walet have the highest amylose content (55.39%, that’s potential as source of  RS-3. Mung beans Walet have the 42.11% of starch content; 35.33% of yield starch; 99.63%  of starch purity; 17.11 g/g of highest swelling power; 65.26 g/g of WHC; 59.36 g/g  of OHC; 8.92% of blue value; Oval granular shape; white  color (88.09 of  Lightness; 78.7 °C of gelatinization temperature; tipe C of X-ray diffraction pattern, and 1430 Cp of the fastest retrograded starch viscosity. ABSTRAK Kacang hijau merupakan jenis kacang-kacangan sumber pati beramilosa tinggi yang potensial menghasilkan RS-3 tinggi dan rendah kalori. Kajian tentang karakteristik patinya akan membuka peluang pemanfaatannya untuk penanganan obesitas di masa datang. Telah dilakukan isolasi dan karakterisasi sifat-sifat pati kacang hijau dari 4 varietas lokal Indonesia (Walet, Sriti, Murai, dan Vima-1. Isolasi pati menggunakan metode Hoover yang dimodifikasi dan sifat-sifat pati yang dianalisis meliputi kadar pati, amilosa, bentuk granula, warna pati, swelling power, WHC, blue value, viskositas, dan sifat kristalinitas pati. Hasil isolasi dan analisis menunjukkan bahwa kacang hijau varietas Walet memiliki kadar amilosa paling tinggi (55,39%, sehingga potensial sebagai bahan dasar RS-3. Kacang hijau Walet menghasilkan kadar pati 42,11%; rendemen pati 35

PROFIL GELATINISASI BEBERAPA FORMULASI TEPUNG-TEPUNGAN UNTUK PENDUGAAN SIFAT PEMASAKAN (GELATINISATION PROFILE OF SEVERAL FLOUR FORMULATIONS FOR ESTIMATING COOKING BEHAVIOUR

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Nelis Imanningsih

2012-06-01

garam dan protein putih telur merupakan formulasi dasar yang banyak dijumpai pada makanan tradisional Indonesia. Komposisi amilopektin-amilosa yang berbeda serta adanya interaksi bahan di dalam formula sangat menentukan sifat pemasakan untuk mendapatkan karakteristik tekstur yang diinginkan. Untuk mempelajari interaksi beberapa jenis tepung dengan air, protein putih telur dan garam serta pengaruhnya terhadap sifat pemasakan makanan semi-solid. Ada empat formulasi untuk setiap jenis tepung (beras, beras ketan, terigu dan tapioka, yakni: (1 air : tepung = 25 : 3 g; (2 air : tepung : garam =  25 : 3 : 0,28 g; (3 air : tepung : protein putih telur = 25 : 3 : 0,3 g; dan (4 air, tepung, garam, protein putih telur = 25 : 3 : 0,28 : 0,3 g. Tepung-tepungan dianalisis kandungan proksimat, distribusi ukuran partikel dan komposisi amilosa-amilopektinnya. Sifat pemasakan diuji dengan menggunakan Rapid Visco Analizer (RVA untuk menentukan viskositas, suhu dan waktu puncak terjadinya gelatinisasi. Tepung beras, beras ketan, terigu dan tapioka memiliki sifat gelatinisasi berbeda yang berhubungan dengan struktur pati dan komposisi amilosa-amilopektin. Tepung terigu memiliki viskositas puncak yang paling rendah, sementara tepung tapioka tertinggi. Adanya garam akan menunda waktu terjadinya gelatinisasi. Protein putih telur meningkatkan viskositas puncak, dan adanya garam dan protein putih telur secara bersamaan meningkatkan viskositas puncak dan menyebabkan viskositas puncak ini terjadi dengan lebih cepat. Dalam pengolahan pangan, tepung tapioka dapat digunakan untuk memberi kekentalan pada waktu pemasakan yang singkat, tetapi kurang dapat memberikan kekentalan yang cukup pada produk yang dingin. Tepung beras memerlukan waktu pemasakan yang cukup lama untuk memberikan kekentalan yang baik pada produk, tetapi kekentalan ini dapat bertahan baik pada suhu yang dingin. [Penel Gizi Makan 2012, 35(1: 13-22] Kata kunci: tepung, garam, protein, gelatinisasi, viskositas

Daya Bunuh Hand Sanitizer Berbahan Aktif Alkohol 59% dalam Kemasan Setelah Penggunaan Berulang terhadap Angka Lempeng Total (ALT

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Isnaeni Walidah

2014-03-01

Full Text Available Kebersihan merupakan tahap awal untuk menjaga pola hidup sehat dan terhindar dari penyakit. Pencegahan penyebaran penyakit salah satunya adalah dengan mencuci tangan menggunakan antiseptik hand sanitizer.  Hand sanitizer berbahan aktif alkohol 40 – 80%  mampu menghambat pertumbuhan bakteri. Tetapi pemakaian hand  sanitizer yang tidak langsung habis akan mempengaruhi kualitas hand sanitizer Penggunaan berulang hand sanitizer akan mempengaruhi kemampuan bahan aktif dalam membunuh kuman karena alkohol sebagai bahan aktif pada hand sanitizer memiliki sifat yang mudah menguap. Tujuan penelitian untuk mengetahui daya bunuh hand sanitizer berbahan aktif alkohol 59% dalam kemasan setelah penggunaan berulang terhadap angka lempeng total. Metode  penelitian analitik observasional, menggunakan 10 responden yang diuji angka lempeng total pada tangan setelah penggunaan berulang hand sanitizer dari volume 50 ml sampai dengan ± 25 ml dan dari volume ± 25 ml sampai dengan ± 12,5 ml. Hasil penelitian menunjukkan daya bunuh hand sanitizer berbahan aktif alkohol 59% dalam kemasan setelah penggunaan berulang dari volume 50 ml sampai volume ± 25 ml sebesar  21,38%. Sedangkan daya bunuh hand sanitizer pada penggunaan berulang  hand sanitizer dari volume ± 25 ml sampai dengan volume ± 12,5 ml sebesar 15,83%. Ada pengaruh penggunaan berulang hand sanitizer berbahan aktif alkohol 59% dalam kemasan terhadap jumlah angka lempeng total

"Utuslah Aku": Eksposisi Yunus Pasal 3-4 Tentang Pengutusan Nabi Yunus Berdasarkan Perspektif Allah Menyesal

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Peniel C.D. Maiaweng

2012-10-01

Full Text Available mereka yang seharusnya dipanggilTuhan untuk pergi ke Niniwe (1:1-2, tetapi melarikan diri ke Tarsis (1:4-14, dan saat ini sedang berdoa dalam perut ikan besar dengankebingungannya (Yun. 2:1-9, akan kembali kepada panggilannya, yaituberbalik arah menuju ke Niniwe (3:1-2, untuk melaksanakanpelayanannya (3:4-9, karena Allah yang memanggil, walaupun Iadisebut Allah yang menyesal, tetapi Ia adalah Allah yang menyerukananugerah, Allah menerima pertobatan, dan diakui dalam pemberitaanPerjanjian Lama. Sebagai Allah yang menyesal, Ia adalah Allah yangterbuka terhadap orang-orang yang belum diselamatkan; Ia adalah Allahyang berdaulat untuk melakukan yang terbaik bagi manusia; Ia adalahAllah yang Mahatahu yang mengantisipasi segala perubahan sikap hidupmanusia di masa yang akan datang; Ia adalah Allah yang konsistenterhadap firman yang telah dinyatakan-Nya; dan Ia adalah Allah yangkonsisten terhadap sifat-sifat-Nya, sebagai Allah yang penyayang danpengasih serta panjang sabar dan berlimpah kasihs setia (4:2.

KARAKTERISTIK MORFOLOGI, TERMAL, FISIK-MEKANIK, DAN BARRIER PLASTIK BIODEGRADABEL BERBAHAN BAKU KOMPOSIT PATI TERMOPLASTIK-LLDPE/HDPE

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Waryat Waryat

2013-08-01

  ABSTRAK   Plastik sebagai kemasan suatu produk sudah banyak dipakai dan digunakan dalam kurun waktu lama. Namun, limbah plastik tersebut dapat menimbulkan pencemaran lingkungan dikarenakan plastik sulit untuk terdegradasi oleh mikroorganisme. Usaha untuk mengurangi ketergantungan terhadap plastik salah satunya adalah penggunaan plastik ramah lingkungan dari bahan baku yang dapat diperbaruhi dengan metode pencampuran/blending. Permasalahan yang dihadapi dalam pembuatan plastik biodegradabel berbahan baku campuran antara bahan alami dan sintetis adalah tidak kompatibel antara kedua bahan tersebut karena bahan alami bersifat hidrofilik/polar dan bahan sintetis bersifat hidrofobik/non polar. Untuk meningkatkan kompatibilitas antara kedua campuran itu perlu ditambahkan bahan seperti compatibilizer. Tujuan penelitian ini adalah untuk mengetahui karakteristik morfologi permukaan plastik, kecepatan alir, densitas, suhu leleh, sifat mekanik, dan barrier pastik biodegradabel berbahan baku campuran pati termoplastik-LLDPE/HDPE. Penelitian ini dibagi menjadi tiga tahap yaitu pembuatan pati termoplastik, pembuatan compatibilizer LLDPE/HDPE-g-MA dan pembuatan plastik biodegradabel. Karakteristik sifat aliran, kekuatan tarik, perpanjangan putus, dan permeabilitas oksigen plastik biodegradabel berbahan baku pati termoplastik-LLDPE/HDPE cenderung menurun, sedangkan karakteristik permeabilitas terhadap uap air cenderung meningkat dengan semakin meningkatnya kandungan pati termoplastik. Adanya compatibilizer LLDPE/HDPE-g-MA menghasilkan sifat mekanik lebih baik pada plastik biodegradabel. Kata kunci: plastik biodegradabel, pati termoplastik, compatibilizer MA-g-LLDPE/HDPE

Penentuan Waktu dan Suhu Pengeringan Optimal Terhadap Sifat Fisik Bahan Pengisi Bubur Kampiun Instan Menggunakan Pengering Vakum

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Yulia Helmi Diza

2014-12-01

Full Text Available Research to improve the quality of kampiun instant porridge had been done with the treatment temperature and time of drying using a vacuum drying. The aim of the study was to determine the optimal drying temperature and time in the filler manufacture of instant kampiun porridge consisted of instant rice porridge, instant mung beans, black rice porridge and banana instant. To the obtained products were tested the physics test which covered yield, moisture content, density kamba, water absorption capacity, and rehydration time. The results of analysis from various treatments showed that the optimum treatment for instant rice porridge was drying temperature 60oC for 6 hours, for instant mung beans was drying temperature 60oC for 6 hours, for instant banana was drying temperature of 50oC for 6 hours, and for black sticky rice porridge was drying temperature 60oC for 6 hours.ABSTRAKPenelitian peningkatan mutu bubur kampiun instan telah dilakukan dengan perlakuan suhu dan waktu pengeringan menggunakan alat pengeringan vakum. Tujuan penelitian adalah untuk menentukan suhu dan waktu pengeringan optimal dalam pembuatan bahan pengisi bubur kampiun instan, yang terdiri dari bubur beras instan, kacang hijau instan, bubur ketan hitam instan dan pisang instan. Terhadap produk yang dihasilkan dilakukan uji fisika meliputi rendemen, kadar air, densitas kamba, kapasitas penyerapan air, dan waktu rehidrasi. Hasil analisis terhadap berbagai perlakuan menunjukkan perlakuan optimal untuk bubur beras instan adalah suhu pengeringan 60oC selama 6 jam, untuk kacang hijau instan adalah suhu pengeringan 60oC selama 6 jam, untuk pisang instan adalah suhu pengeringan 50oC selama 6 jam dan untuk bubur ketan hitam instan adalah suhu pengeringan 60oC selama 6 jam.

RESPON PENDOPO JOGLO YOGYAKARTA TERHADAP GETARAN GEMPA BUMI

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Bisatya W. Maer

2008-01-01

bangunan terhadap getaran gempa akibat adanya perbedaan sifat tumpuan. Analisis dalam tulisan ini didasarkan pada analisis beban gempa statik ekivalen (2 dan dibahas secara kualitatif Kata kunci: gempa, Pendopo Joglo, sistem tumpuan, repon struktur, peredaman.

SOIL PROPERTIES OF EIGHT FOREST STANDS RESULTED FROM REHABILITATION OF DEGRADED LAND ON THE TROPICAL AREA FOR ALMOST A HALF CENTURY (Sifat-sifat Tanah Delapan Tegakan Hutan Hasil Rehabilitasi Lahan Terdegradasi pada Daerah Tropika Selama Setengah Abad

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Haryono Supriyo

2013-11-01

Full Text Available ABSTRACT Physical, chemical and biological properties of soil are influenced by vegetation types which grow above it. Different tree species of stands will produce difference litter quantity, litter quality and also plants’ root system. Therefore quantifying physical and chemical soil properties in several stands after rehabilitation of degraded land will increase the understanding of forest soil characteristics. The research was conducted in 8 forest stands in Wanagama I, Gunungkidul, Yogyakarta. Collection of soil samples was done at the depth of 0-10, 10-30 and 30-50 cm by making soil profile. The result showed that the textural classes were from sandy clay loam to clay. The content of clay increased with increasing soil depth. Bulk density did not differ much among the profiles and soil depth, ranging from 0.90 to 1.28 g/cm3, and so were particle density ranged from 2.19 to 2.55 g/cm3 and pore space ranged from 47.89 to 58.08 %. pH H2O ranging from 5.81 to 7.49 (slightly acid to neutral, meanwhile  pH KCl ranging from 4.44 to 6.37. C-organic content varied widely among the vegetations and soil depth ranged between 0.11 and 5.17 %. Available P and total P varied widely from 1 to 104 ppm and from 20 to 390 ppm, respectively. CEC were not much different among the profiles and soil depths, ranging from 19.80 to 38.06 cmol (+/kg and base saturation in all samples were very high i.e. > 100 %.   ABSTRAK Sifat-sifat fisik, kimia dan biologi tanah dipengaruhi oleh tipe vegetasi yang tumbuh di atasnya. Perbedaan spesies pohon suatu tegakan akan menghasilkan perbedaan jumlah seresah, kualitas seresah dan juga sistem perakaran. Kuantifikasi sifat-sifat fisik dan kimia tanah pada beberapa tegakan hutan pada lahan terdegradasi setelah direhabilitasi akan meningkatkan pemahaman mengenai sifat-sifat tanah hutan. Penelitian dilakukan pada I jenis tegakan hutan di Hutan Pendidikan Wanagama, Gunungkidul, Yogyakarta. Pengambilan sampel tanah dilakukan pada

Kajian Sifat Fisik Dan Kimia Tepung Labu Kuning (Cucurbita Maxima) Dengan Perlakuan Blanching Dan Perendaman Natrium Metabisulfit (Na2s2o5)

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Purwanto, Chatrine Chrisandy; Ishartani, Dwi; Muhammad, Dimas Rahadian Aji

2013-01-01

Penelitian ini bertujuan untuk mengetahui sifat fisik dan kimia tepung labu kuning yang diberi perlakuan blanching dan perendaman natrium metabisulfit. Penelitian ini terdiri dari dua tahap utama, yaitu pembuatan tepung labu kuning dan pengujian sifat fisik dan kimia tepung labu kuning. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua kali ulangan analisa. Data yang diperoleh dianalisis dengan metode Analysis of Variance (ANOVA). Bila ada perbedaan antar perlakuan maka dilan...

SIFAT MEKANIK KOMPOSIT COKELAT BATANG DENGAN FILLER BIJI METE

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P A Wiguna

2015-07-01

Full Text Available Bahan komposit yang banyak dijumpai di masyarakat umumnya terbuat dari material berat seperti, logam, keramik, atau polimer. Pada bahan pangan terdapat pula yang termasuk ke dalam kategori material komposit, diantaranya adalah cracker, cookie, kue pie, chasew chocolate, dan lain sebagianya. Diantara komposit bahan pangan tersebut yang paling banyak digemari sebagai makanan camilan adalah  cokelat. Hal menarik yang dikaji pada studi ini berkaitan dengan sifat mekanik komposit cokelat yaitu kekuatan tekan dari komposit tersebut. Komposit ini terbuat dari bahan makanan cokelat dengan variasi  fraksi massa mete sebagai filler yaitu 13 %, 17%, 20%, 23%, 26 %, dan 29%. Matriks yang digunakan adalah cokelat jenis dark chocolate. Sifat mekanik yang dikaji adalah kuat tekan pada komposit cokelat batang. Parameter ini diukur untuk mengetahui ukuran maksimum beban yang dapat diterima komposit tersebut. Komposit yang memiliki kekuatan tekan terbesar ada pada cokelat batang dengan fraksi massa mete 29 % yaitu sebesar 2,81 MPa. Hal ini menunjukkan  bahwa variasi fraksi massa mete berpengaruh pada sifat mekanik material komposit karena berkaitan dengan perilaku distribusi partikel. Kuat tekan komposit cokelat teramati meningkat dengan kenaikan jumlah biji mete pada cokelat batang.Generally, the composite materials found in the civilization are made from heavy materials, e.g. metals, ceramics, and polymers. In fact, the composite material also found in food, such as crackers, cookies, pies, and cashew chocolates. Cashew chocolates usually consumed as the most favourite snack. The most interesting object from this study is related with the mechanical composite characteristic of the chocolate, i.e. compressive strength. Chocolate composite is made from chocolate with variety of cashew mass fraction as the filler, i.e. 13 %, 17%, 20%, 23%, 26 %, and 29%. In this study, the composite matrix was a dark chocolate, whereas the mechanical characteristic determined

Aktivitas Antioksidan, Sifat Fisik, Dan Tingkat Penerimaan Permen Marshmallow Dengan Penambahan Brokoli

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Jalasena, Rizka Akbar; Anjani, Gemala

2016-01-01

Latar Belakang : Komsumsi sayur pada anak masih rendah. Brokoli merupakan salah satu sayuran tinggi antioksidan. Salah satu cara meningkatkan konsumsi sayur pada anak adalah melalui produk yang disukai seperti permen. Penambahan brokoli pada permen marshmallow diharapkan dapat menjadi alternatif produk tinggi antioksidan.Tujuan : Menganalisis kandungan aktivitas antioksidan, sifat fisik (kekerasan dan kekenyalan), dan tingkat penerimaan permen marshmallow dengan penambahan brokoli.Metode : Me...

PENGARUH PANJANG ENTRES TERHADAP KEBERHASILAN PENYAMBUNGAN TANAMAN ALPUKAT (PERSEA AMERICANA MILL.

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Dirgahani Putri

2016-06-01

Full Text Available Beragamnya hasil produksi dan kualitas buah alpukat dapat diperbaiki dengan metode penyambungan. Penyambungan merupakan kegiatan untuk mengga-bungkan dua atau lebih sifat unggul dalam satu tanaman. Penelitian ini bertujuan mengetahui pengaruh berbagai panjang entres terhadap keberhasilan penyam-bungan tanaman alpukat. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok dengan lima perlakuan panjang entres, yaitu 3 cm, 6 cm, 9 cm, 12 cm, dan 15 cm.Setiap perlakuan diulang sebanyak lima kali dan setiap perlakuan terdiri atas lima tanaman;sehingga jumlah totalnya sebanyak 125 tanaman. Pengamatan dilakukan pada peubah persentase sambung hidup, jumlah tunas, panjang tunas, jumlah daun, dan diameter batang atas. Berbagai panjang entres tidak memberikan pengaruh yang nyata pada peubah persentase sambung hidup, panjang tunas terpanjang, jumlah daun, dan diameter batang atas tetapi berpengaruh nyata pada peubah jumlah tunas. Perlakuan panjang entres 15 cm memberikan hasil tertinggi untuk jumlah tunas, panjang tunas, jumlah daun dan diameter batang atas, sedangkan untuk persentase hidup perlakuan 6 cm, 12 cm memberikan hasil tertinggi yaitu 100%. Perlakuan panjang entres 3 cm adalah perlakuan yang memberikan pengaruh yang rendah pada persentase sambung hidup (yaitu 92%, peubah jumlah tunas, panjang tunas, serta diameter batang atas pada berbagai umur tanaman alpukat.

SIFAT FISIKA MEKANIKA PAPAN PARTIKEL DARI PELEPAH NIPAH (Nyfa fruticans Wurmb DAN SERBUK GERGAJI DENGAN PEREKAT UREA FORMALDEHYDE Physical-mechanical Properties of Particle Boards Made From Nipah (Nyfa fruticans wurmb and Sawdust with Urea Formaldehyde Adhesive

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Noor Mirad Sari

2016-08-01

Full Text Available Penelitian bertujuan untuk mengetahui sifat fisika dan mekanika papan buatan dari pelepah nipah dan serbuk gergaji yang meliputi kerapatan, kadar air, penyerapan air, pengembangan tebal, keteguhan lengkung dan keteguhan patah. Penelitian dan pengujian ini dilaksanakan di Laboratorium Teknologi Hasil Hutan untuk pembuatan partikel, dan pengujian sifat fisik mekanik dilakukan di Balai Riset dan Standarisasi Industri Banjarbaru. Pengujian sifat fisik yang meliputi pengujian kadar air, kerapatan, penyerapan air dan pengembangan tebal, pengujian sifat mekanik meliputi pengujian MOE dan MOR. Hasil penelitian menunjukkan Kadar air dari papan partikel hampir semuanya masuk standar SNI  kecuali pada perlakuan A yaitu sebesar  16,74 %, semua perlakuan untuk kerapatan telah memenuhi standar SNI yaitu  0,40 kg/cm2 – 0,90 kg/cm2, penyerapan air yang masuk standar SNI adalah perlakuan D yaitu 28,88 % dan 23,42 %, kisaran nilai perlakuan pengembangan tebal  3,82 % - 12,29 % telah memenuhi standar SNI, semua sifat mekanika MOE tidak ada yang memenuhi standar SNI kecuali pada MOR untuk perlakuan D yaitu sebesar 85,43 kg/cm2. Kata kunci:  Sifat Fisik  Mekanik, Pelepah Nipah dan Serbuk Gergaji, Urea Formaldehide

Pengaruh Penambahan Aditif Bi2O3 Terhadap Karakteristik Barium Heksaferit Hasil Sintesis dengan Metode Sol-Gel

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Siti Wardiyati Siswoyo

2017-11-01

Full Text Available Telah dilakukan sintesis barium heksaferit (BaFe12O19 secara sol-gel menggunakan prekursor barium nitrat [Ba(NO32], besi nitrat [Fe(NO33] dan asam sitrat (C6H8O7 Penelitian ini bertujuan untuk mendapatkan BaFe12O19 fasa tunggal berukuran nano dengan koersivitas magnetik tinggi. Untuk mencapai tujuan tersebut dilakukan penambahan aditif Bi2O3 dengan berbagai variasi persentase berat terhadap BaFe12O19 dari 0,5% sampai dengan 2%. Karakterisasi BaFe12O19 hasil sintesis dilakukan dengan  menggunakan alat X-ray diffraction (XRD untuk analisis  fasa, Fourier Transmission Infra Red (FTIR untuk mengetahui tipe ikatan yang terjadi, Scanning Electron Microscope dan Energy Dispersive X-ray Spectroscopy (SEM/EDS untuk analisis struktur dan persentase atom, dan Vibrating Sample Magnetometer VSM untuk mengetahui sifat magnetik yaitu koersivitas dan saturasi magnetik. Dari hasil percobaan diperoleh BaFe12O19 fasa tunggal dengan ukuran partikel sekitar 105 nm - 130 nm, saturasi magnetik 57,86 emu/g dan koersivitas magnetik sebesar 0,38 T. 

Sifat Strong Perron-Frobenius Pada Solusi Positif Eventual Sistem Persamaan Differensial Linier Orde Satu

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Yulian Sari

2014-12-01

Full Text Available Artikel ini membicarakan tentang sifat strong Perron-Frobenius pada solusi positif eventual sistem persamaan differensial linier orde satu. Syarat perlu agar solusi positif eventual sistem persamaan differensial linier orde satu diajukan. Beberapa kriteria tentang matriks eksponensial positif eventual dan matriks positif eventual juga akan digunakan dalam teorema.

Sifat Strong Perron-Frobenius Pada Solusi Positif Eventual Sistem Persamaan Differensial Linier Orde Satu

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Yulian Sari

2015-04-01

Full Text Available Artikel ini membicarakan tentang sifat strong Perron-Frobenius pada solusi positif eventual sistem persamaan differensial linier orde satu. Syarat perlu agar solusi positif eventual sistem persamaan differensial linier orde satu diajukan. Beberapa kriteria tentang matriks eksponensial positif eventual dan matriks positif eventual juga akan digunakan dalam teorema.

SIFAT MEKANIK BAHAN GESEK REM KOMPOSIT DIPERKUAT SERAT BAMBU

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Sutikno -

2012-01-01

Full Text Available Bahan gesek komposit diperkuat serat bambu untuk kampas rem otomotif dibuat menggunakan mesin pres isostatik panas pada 19oC selama 3 jam. Jumlah serat bambu dan serbuk logam di dalam pencampuran dioptimasi, setiap komposisi komponen lain dibuat tetap, pengaruhnya pada sifat-sifat mekanik dan struktur mikro diselidiki. Serat bambu disini digunakan sebagai pengganti serat asbes yang jumlahnya divariasi antara 2,86-17,14% dari volume total dan fraksi berat masing-masing unsur penyusun ditentukan menggunakan energy dispersive X-ray spectroscopy. Angka kekerasan Brinell, kekuatan tarik maksimum, dan ketahanan aus khas bahan gesek yang difabrikasi berada pada rentang 21,7-43,4 kg/mm2, 0,021-0,036 ton, dan 1,5exp-11-5,2exp-11 m2/N.Friction materials of bamboo fibers reinforced composites for automotive brakes were made using hot isostatic pressing machine at 190oC for 3 hours. The contents of bamboo fiber and metal powder in the mixing were optimized, each composition of other components was fixed, its effects on mechanical properties and microstructure were investigated. Bamboo fibers were used here as substitutes for asbestos fibers whose number varied between 2.86 to 17.14% of the total volume and weight fraction of each constituent element is determined using energy dispersive X-ray spectroscopy. Brinell hardness number, the maximum tensile strength and specific wear resistance of friction materials fabricated in the ranges of 21.7 to 43.4 kg/mm2, 0.021 to 0.036 tons, and 1.5 exp-11-5, 2exp-11 m2 / N, respectively.

Pengaruh Fungi Indigenous Toleran Zn terhadap Pertumbuhan Bibit Jagung di Media Tailing Steril

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Ratna Santi

2015-07-01

Full Text Available Keberadaan logam Zn dalam jumlah tertentu di tailing pasca tambang akan berdampak pada rendahnya populasi mikroba tanah dan menghambat pertumbuhan tanaman. Aplikasi pemanfaatan fungi indigenus dari lahan tercemar merupakan salah satu usaha dalam memperbaiki sifat tanah untuk pertumbuhan tanaman. Penelitian ini bertujuan untuk mengetahui pengaruh inokulasi fungi dan toksisitas Zn terhadap pertumbuhan jagung pada fase VE-V9 di media tailing steril.  Fungi diisolasi dari tailing lahan pasca penambangan timah di Sungailiat  Bangka. Tiga isolat dari 15 isolat dipilih untuk pengujian pengaruh inokulasi fungi terhadap pertumbuhan jagung. Percobaan menggunakan Rancangan Acak Kelompok(RAK dua faktor dengan perlakuan jenis fungi dan konsentrasi Zn. Isolat yang digunakan toleran terhadap Zn pada konsentrasi 0-25 ppm dan mampu menghasilkan fitohormon. Hasil percobaan di rumah kaca menunjukkan bahwa inokulasi fungi nyata memperbaiki pertumbuhan jagung, dibandingkan tanpa inokulan. Serapan tertinggi ditunjukkan oleh isolat R 7J1, namun pertumbuhan jagung terbaik didapatkan dari inokulasi isolat B 2J1. The existence of Zn metal in a certain amount in the post tin mine tailings will result in low soil microbial populations and inhibit plant growth. Application of indigenous fungi utilization on contaminated land is one effort to improve soil properties for plant growth.This study aimed to determine the effect of inoculation of fungi and toxicity of zinc on the growth of corn in the phase of VE-V9 in sterile tailings medium. Fungi were isolated from post tin mining tailings tin lands in Bangka Sungailiat. Three isolates from 15 isolates were selected to test the effect of fungal inoculation on the growth of corn. Experiment used a Randomized Complete Block Design (RCBD two factors with fungi and Zn concentration treatments.Tolerant isolates used were at a concentration of 0-25 ppm Zn and capable to produce phytohormones. Result of experiment in greenhouse

KAJIAN KADAR SERAT, KALSIUM, PROTEIN, DAN SIFAT ORGANOLEPTIK CHIFFON CAKE BERBAHAN MOCAF SEBAGAI ALTERNATIF PENGGANTI TERIGU

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Dian Ayu Damayanti

2014-05-01

Full Text Available Study of Fiber, Calcium, and Protein Content and the Organoleptic Cha­rac­teristics of Mocaf Chiffon Cake as an Alternative Substitution of Wheat Flour. This research aims to identify the physical properties, the hedonic quality, the level of preferences, as well as the fiber, calcium, and protein contents of mocaf chiffon cakes. Data is analyzed using t-test. The results show: (1 the physical properties of colors has colors L (brightness, a+ (redness, and b+ (yellowish; (2 the highest value of preference level of color is 4.28; (3 the highest value of the hedonic quality of flavors is 4.60; (4 the highest value of the chemical properties of calcium is 10.53, (5 the lowest value of the protein content is 5.97 g, and (6 the highest value of fiber content is 4.34 g.   Penelitian ini bertujuan untuk mengetahui sifat fisik, mutu hedonik, tingkat kesukaan, kandungan serat, kandungan kalsium, dan kandungan protein chiffon cake berbahan mocaf. Jenis penelitian ini adalah penelitian eksperimen. Data dianalisis menggunakan uji-t. Hasil penelitian menunjukkan: (1 sifat fisik warna memiliki kisaran warna L (kecerahan, a+ (kemerahan, dan b+ (kekuningan; (2 tingkat ke­suka­­an warna memiliki nilai tertinggi 4,28; (3 mutu hedonik rasa memiliki nilai tertinggi 4,60; (4 sifat kimia kalsium memiliki nilai tertinggi 10,53; (5 kan­dung­an protein memiliki nilai terendah 5,97g; dan (6 kandungan serat memiliki nilai ter­tinggi  4,34 g.

PENGARUH VARIASI SUHU PADA PROSES SELF TEMPERING DAN VARIASI WAKTU TAHAN PADA PROSES TEMPERING TERHADAP SIFAT MEKANIS BAJA AISI 4140

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Sunardi Sunardi

2016-07-01

Full Text Available Tujuan penelitian ini adalah untuk mengetahui sifat mekanis pada baja AISI 4140 dengan proses tempering dengan variasi waktu tahan dan variasi suhu pada proses self tempering. Material terlebih dahulu dipanaskan pada suhu 850°C, di tahan dengan waktu 14 dan 28 menit, media pendinginan adalah Oli SAE 20. Pada proses tempering baja dipanaskan kembali dengan suhu 200°C di tahan dengan waktu 30 dan 120 menit. Sedangkan untuk proses self tempering, baja di panaskan pada suhu 850°C di tahan dengan waktu 14 dan 28 menit kemudian didinginkan, suhu yang harus dicapai pada pendinginan adalah 200°C, 400°C dan 600°C. Proses tempering dengan variasi waktu tahan mempunyai nilai kekerasan terbesar 50,1 HRC dengan waktu tahan 120 menit, sedangkan nilai kekerasan terbesar pada proses self tempering dengan variasi suhu adalah 29,68 HRC pada suhu 200°C. Nilai ketangguhan terbesar pada saat proses tempering adalah 0,341 (J/mm2 dengan waktu tahan 120 menit, sedangkan pada saat proses self tempering ketangguhan terbesar pada suhu 600°C dengan nilai 0,375 (J/mm2. Laju korosi terbesar pada saat tempering adalah 0,055 (mpy dengan waktu tahan 30 menit, sedangkan pada saat proses self tempering laju korosi terbesar pada suhu 400°C dengan nilai 0,0388 (mpy. 

PERAN REVEGETASI TERHADAP RESTORASI TANAH PADA LAHAN REHABILITASI TAMBANG BATUBARA DI DAERAH TROPIKA (The Role of Revegetation on the Soil Restoration in Rehabilitation Areas of Tropical Coal Mining

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Cahyono Agus

2014-05-01

Full Text Available ABSTRAK Pertambangan batubara terbuka menyebabkan degradasi lahan, sehingga perlu upaya rehabilitasi lahan melalui program revegetasi. Penelitian dilakukan di areal PT. Berau Coal  pada site Binungan, Lati dan Sambarata, Kabupaten Berau, Kalimantan Timur, Indonesia. Penelitian menggunakan rancangan acak lengkap ber-blok dengan umur revegetasi sebagai perlakuan, tiga kali ulangan dan tiga site sebagai blok. Pemilihan lokasi menggunakan metode purposif sampling yaitu pengambilan sampel yang didasarkan pada pertimbangan pada umur pengolahan lahan revegetasi, meliputi S1 : area hutan sebelum ditambang (rona awal, S2 : revegetasi awal, umur tanaman  5 tahun. Pengambilan sampel tanah pada  kedalaman 0–20 dan 20-40 cm pada setiap perlakuan di ketiga lokasi, selanjutnya dianalisis sifat fisik dan kimianya. Tanah Typic Hapludult pada lahan hutan sebelum ditambang batubara secara terbuka (S1,  rona awal mempunyai kadar C-organik (1,87 %, N-total (0,14 %, P-tersedia (31,40 ppm, K-tertukar (0,11 me/100g, pH (3,98, KTK (10,72 me/100g dan kejenuhan basa (17 %. Penambangan terbuka batubara telah menyebabkan lapisan bawah dan  permukaan tanah menjadi terbongkar dan terjadi penurunan kualitas tanah yang sangat drastis. Penimbunan lahan dengan media tanah permukaan sebelumnya, telah cukup  mampu memperbaiki sifat-sifat tanah tertambang namun belum sesuai sebagai media pertumbuhan, serta sangat rentan terhadap degradasi lahan lebih lanjut. Revegetasi menggunakan tanaman pionir, cepat tumbuh dan adaptif seperti Sengon, Akasia, Sungkai, Melina, Angsana, Jarak serta Legume Cover Crop (LCC pada area bekas tambang  batubara memberikan pengaruh yang  nyata terhadap peningkatan kandungan C-organik, N-total dan  pH tanah. Revegetasi menggunakan spesies cepat tumbuh setelah berumur 5 tahun telah mengembalikan bahkan memperbaiki sifat kimia tanah dibanding dengan kondisi pada hutan tropika basah sebelum dilakukan penambangan terbuka.   ABSTRACT Open coal mining

Pengaruh Penambahan Ni, Cu, dan Al dan Waktu Milling pada Mechanical Alloying Terhadap Sifat Absorpsi dan Desorpsi Mg sebagai Material Penyimpan Hidrogen

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Febrian Budi Pratama

2012-09-01

Full Text Available Mg merupakan salah satu material yang digunakan sebagai material penyimpan hidrogen dengan membentuk MgH2. Sifat absorpsi dan desorpsi hidrogen dari suatu metal hidrida salah satunya tergantung  pada bahan, unsur penambah, dan metode pembuatannya. Pada penelitian kali ini Mg sebagai material penyimpan hidrogen dihasilkan melalui metode mechanical alloying dengan unsur penambah Ni, Cu, dan Al dan variasi waktu milling 10, 20, 30 jam. Selanjutnya sampel dilakukan pengujian SEM, XRD, DSC, dan Uji hidrogenisasi. Dari data uji diperoleh bahwa meningkatnya waktu milling menurunkan ukuran partikel sehingga meningkatkan wt% hidrogen terabsorb dan menurunkan temperatur onset desorpsi. Namun efek aglomerasi dan coldwelding yang berlebih pada proses mechanical alloying mengakibatkan ukuran partikel menjadi lebih besar. Unsur pemadu Al dan Cu berfungsi sebagai katalis, sedangkan Ni berfungsi sebagai pemadu yang ikut bereaksi dengan hidrogen. Mg10wt%Al dengan waktu milling 20 jam mempunyai nilai weight percent terbaik H2 yaitu 0.38% dalam temperatur hidrogenisasi 2500C, tekanan 3 atm, dan waktu tahan 1 jam. Sedangkan Mg10wt%Al dengan waktu milling 30 jam memiliki temperatur onset paling rendah yaitu 341.490C Kata Kunci— Absorpsi, Desorpsi, Material Penyimpan Hidrogen, Mechanical Alloying, Mg

PENGARUH UMUR PANEN RUMPUT LAUT Eucheuma cottonii TERHADAP SIFAT FISIK, KIMIA DAN FUNGSIONAL KARAGENAN Effect of Harvest Time of Seaweed Eucheuma cottonii on Physical, Chemical and Fungsional Properties of Carra- geenan

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Djagal W. Marseno

2012-05-01

Full Text Available The aim of this study was to evaluate the effect of different harvesting times of Eucheuma cottonii on both physical, chemical and functional properties of carrageenan. Seaweed Eucheuma cottonii was obtained from water territorial of Tablolong Kupang. The study was carried out into two steps. The first step was to investigate the effect of harvesting time of 30, 45, and 60 days after planting on physical and chemical properties of obtained carrageenan. The second step was to study the effect of functional properties of obtained carrageenan on viscocity and the stability of tomato sauce. The results showed that seaweed which was harvested in 45 days after planting has good physical and chemical properties of carrageenan in term of moisture 12.45 %; protein 5.03 %; extract ether 1.40 %; ash 21.29 %; carbohy- drate 72.28 %; sulphate 19.69 %; and crude extract 48.20 %. The obtained carrageenan at concentration of 1,5%, also give highest viscocity of 11.50-45 cps and gel strength of 0.8961-4.0709 kg/cm2. Further identification show that the obtained carrageenan produced was classified as kappa carrageenan and at 0,2 % (w/v was able to stabilize tomato sauce up to 86 % and viscosity of 60 cps after 2 weeks of storage at room temperature. ABSTRAK Tujuan penelitian adalah mengkaji sifat fisik dan kimia karagenan yang diperoleh dari rumput laut Eucheuma cot- tonii pada umur panen yang berbeda dari perairan Tablolong Kupang dan mengetahui sifat fungsionalnya sebagai stabilizer dan thickener dalam saos tomat. Penelitian diawali dengan menanam rumput laut pada interval tanam yang berbeda, sehingga pada saat panen yang bersamaan diperoleh rumput laut dengan umur yang berbeda yaitu 30, 45,60 hari. Tahap berikutnya adalah ekstraksi dan karakterisasi karaginan yang dihasilkan, kemudian aplikasi karaginan yang diperoleh untuk menjaga stabilitas viskositas saos tomat pada konsentrasi karagenan (0,1 %, 0,15 %, 0,2 % b/v. Hasil penelitian menunjukkan bahwa

PENGARUH KADAR TRIPTOPAN PAKAN TERHADAP PERTUMBUHAN DAN SINTASAN KRABLET KEPITING BAKAU, Scylla serrata SELAMA MASA PENDEDERAN

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Usman Usman

2017-01-01

Full Text Available Kepiting bakau bersifat kanibal dan cenderung memiliki laju pertumbuhan yang lambat ketika diberi pakan buatan. Triptopan adalah salah satu asam amino esensial untuk pertumbuhan dan merupakan prekursor pembentukan serotonin yang dapat mengontrol sifat agresif pada beberapa vertebrata. Penelitian ini bertujuan untuk mendapatkan dosis optimum triptopan pakan terhadap pertumbuhan dan sintasan krablet selama masa pendederan. Empat dosis penambahan L-triptopan dalam pakan yaitu: 0% (A; 0,25% (B; 0,5% (C; dan 1,0% (D dengan kadar triptopan dalam pakan berturut-turut 0,41%; 0,52%; 0,67%; dan 0,96%; serta kontrol berupa pakan rebon kering (E yang mengandung triptopan sebanyak 0,79%. Hewan uji yang digunakan adalah krablet kepiting bakau berumur 3-5 hari sejak memasuki stadia krablet. Krablet dipelihara dalam bak fiber berukuran 1,0 m x 1,0 m x 0,5 m sebanyak 15 unit dengan kepadatan masing-masing 50 ekor/m2. Selama lima minggu pemeliharaan, krablet diberi pakan uji sebanyak 30%-15%/hari. Hasil penelitian menunjukkan bahwa krablet yang diberi pakan mengandung triptopan 0,67% menunjukkan laju pertumbuhan tertinggi dan berbeda nyata (P0.05 among the treatments.

PREDIKSI WAKTU LAYAN BANGUNAN BETON TERHADAP KERUSAKAN AKIBAT KOROSI BAJA TULANGAN

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Agus Santosa Sudjono

2005-01-01

Full Text Available Concrete is known as a porous building material, this can causes materials outside the concrete mass infiltrate into the concrete. Concrete structures constructed around the beach/seashore tend to have deterioration problems due to salt attack. This paper discusses models to predict the service life of concrete structure based on the deterioration problems. The service life of concrete structure is divided into three periods. Period I is time needed by Cl−ion to infiltrate into concrete up to the surface of the reinforcement, period II is time needed by corrosion products to fill the transition zone pores, and period III is deterioration time. The value of parameters used in the proposed equations is derived from the result of experiments. Finally, the proposed equations were evaluated by the relationship between variations of depth of concrete cover, water cement ratio (W/C and distance of structure from shore line with service life. It could be concluded that the results of the prediction is satisfactory. Abstract in Bahasa Indonesia : Beton dikenal sebagai bahan bangunan yang berpori. Sifat ini menyebabkan senyawa dari luar dapat berinfiltrasi ke dalam beton. Bangunan beton yang dibangun di sekitar daerah pantai/laut cenderung mengalami kerusakan akibat serangan garam klorida. Makalah ini mendiskusikan model untuk memprediksi waktu layan bangunan beton terhadap kerusakan akibat korosi baja tulangan. Waktu layan bangunan beton dibagi menjadi tiga periode. Periode I adalah waktu yang dibutuhkan oleh ion Cl− untuk melakukan infiltrasi sampai ke permukaan baja tulangan, Periode II adalah waktu yang dibutuhkan oleh senyawa hasil korosi untuk mengisi pori-pori yang ada di transition zone, dan Periode III adalah waktu kerusakan pada bangunan beton. Parameter-parameter yang digunakan dalam persamaan yang diusulkan ditentukan dari hasil pengukuran di laboratorium. Persamaan tersebut dievaluasi dalam hal hubungan antara variasi tebal selimut beton

Pengaruh Substitusi Tepung Pisang pada Pembuatan Brownies terhadap Sifat Kimia dan Penerimaan Organoleptik

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Sifia Silfia

2012-12-01

, protein, dan uji organoleptik terhadap rasa, aroma, dan tekstur. Hasil penelitian menunjukkan bahwa pembuatan brownies pisang memberikan hasil yang optimal pada perlakuan penggunaan tepung pisang 75% dengan kadar serat kasar 1.88%, kadar air 38.01%, protein 12.09%, tekstur, rasa, dan aroma disukai panelis.

Tinjauan Yuridis Terhadap Cybercrime di Indonesia

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Azamul Fadhly Noor

2005-01-01

Modus operandi Cybercrime sangat beragam dan terus berkembang sejalan dengan perkembangan teknologi, tetapi jika diperhatikan lebih seksama akan terlihat bahwa banyak di antara kegiatan-kegiatan tersebut memiliki sifat yang sama dengan kejahatan-kejahatan konvensional yang selama ini sudah dikenal, oleh Azamul Fadhly Noor 05002515

Pulverization of boron element and proportions of boron carbide in boron

International Nuclear Information System (INIS)

Lang, F.M.; Finck, C.

1956-01-01

It is possible to reduce boron element into fine powder by means of a mortar and pestle made of sintered boron carbide, the ratio of boron carbide introduced being less than one per cent. Boron element at our disposal is made of sharp edged, dark brown, little grains of average size greater than 5 μ. Grain sizes smaller than 1μ are required for applying thin layers of such boron. (author) [fr

Pengaruh Atmosferik terhadap Kepuasan dan Niatan Perilaku Konsumen

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Edi Purwanto

2016-12-01

  Penelitian ini dilakukan untuk mengetahui peran atmosferik di restoran “X,” sebuah restoran Jepang yang berada di berbagai area di Jakarta. Penelitian ini menganalisis (1 pengaruh atmosferik terhadap kualitas layanan; (2 pengaruh atmosferik terhadap kualitas makanan; (3 pengaruh atmosferik terhadap nilai yang dirasakan; (4 pengaruh kualitas layanan terhadap kepuasan pelanggan; (5 pengaruh nilai yang dirasakan terhadap kepuasan pelanggan; (6 pengaruh kualitas makanan terhadap kepuasan pelanggan; (7 pengaruh kualitas layanan terhadao niatan perilaku konsumen; (8 pengaruh kepuasan pelanggan terhadap niatan perilaku konsumen; (9 pengaruh kualitas makanan terhadap niatan perilaku konsumen; (10 pengaruh tidak langsung atmosferik terhadap kepuasan pelanggan; dan (11 pengaruh tidak langsung atmosferik terhadap niatan perilaku konsumen. Desain penelitian ini adalah kuantitatif. Kami membagikan kuesioner kepada para pelanggan restoran “X” di Jakarta dan kuesioner yang kembali berjumlah 283, yang mana ada 54 kuesioner yang tidak dapat digunakan, sehingga penelitian ini menggunakan 229 sampel. Setiap indikator terbukti sahih dan setiap variabel terbukti handal. Penelitian ini menemukan bahwa pengaruh atmosferik terhadap kualitas layanan, kualitas makanan, dan nilai yang dirakan secara parsial positif dan signifikan. Pengaruh nilai yang dirasakan dan kualitas makanan terhadap kepuasan pelanggan secara parsial juga positif dan signifikan. Pengaruh kepuasan pelanggan terhadap niatan perilaku konsumen positif dan signifikan. Pengaruh kualitas makanan terhadap niatan perilaku konsumen juga ditemukan positif dan signifikan. Pengaruh tidak langsung atmosferik terhadap kepuasan pelanggan dan niatan perilaku konsumen juga positif dan signifikan. Namun, karena di restoran yang diteliti konsumen mereka melayani diri sendiri, maka kualitas layanan tidak berpengaruh signifikan terhadap kepuasan pelanggan dan niatan perilaku konsumen.

Pengaruh Pencucian Daging Lumat Ikan Patin Siam terhadap Karakteristik Dendeng yang Dihasilkan

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Suryanti Suryanti

2010-06-01

Full Text Available Penelitian ini bertujuan untuk mengetahui pengaruh pencucian daging lumat ikan patin siam (Pangasius hypopthalmus terhadap karakteristik dendeng. Ikan patin siam hidup diberi perlakuan pemberokan selama 24 jam, kemudian dimatikan dengan cara perendaman dalam es selama ± 20 menit. Daging dipisahkan dari tulang dan kulit serta digiling hingga diperoleh daging lumat. Daging lumat diberi perlakuan pencucian satu sampai tiga kali masing-masing dalam air suhu 4-5oC dengan perbandingan 1:5 (b/v, yang dilanjutkan dengan pengepresan. Daging lumat yang diperoleh dari masing-masing perlakuan pencucian kemudian diolah menjadi dendeng dengan mencampurkan bahan tambahan gula putih, garam serta rempah-rempah seperti bawang putih (2%, bawang merah (1,5%, ketumbar (2,5%, asam jawa (3%, lengkuas (2,5%, dan jahe (0,5%. Tahap selanjutnya adalah pencetakan campuran bahan dalam loyang dan dikeringkan dengan sinar matahari selama ±15 jam. Hasil pengamatan menunjukkan bahwa semakin banyak perlakuan pencucian menyebabkan kandungan protein dan karbohidrat semakin kecil, dan sifat tekstur (kekuatan tarik dan elongasi semakin besar. Dendeng berwana coklat kekuningan dengan rasa dan aroma rempah-rempah, sedangkan tekstur agak kenyal dan tidak mudah sobek. Dendeng dari perlakuan satu sampai tiga kali pencucian memiliki nilai angka lempeng total (ALT antara <25 x 102 sampai dengan 1,6 x 104 kol/g serta tidak terdapat kapang yang tumbuh.

Structure and reactivity of boron-ate complexes derived from primary and secondary boronic esters.

Science.gov (United States)

Feeney, Kathryn; Berionni, Guillaume; Mayr, Herbert; Aggarwal, Varinder K

2015-06-05

Boron-ate complexes derived from primary and secondary boronic esters and aryllithiums have been isolated, and the kinetics of their reactions with carbenium ions studied. The second-order rate constants have been used to derive nucleophilicity parameters for the boron-ate complexes, revealing that nucleophilicity increased with (i) electron-donating aromatics on boron, (ii) neopentyl glycol over pinacol boronic esters, and (iii) 12-crown-4 ether.

Pengaruh Ekstraksi Zat Warna Alam dan Fiksasi Terhadap Ketahanan Luntur Warna pada Kain Batik Katun

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Titiek Pujilestari

2016-04-01

Full Text Available ABSTRAKKain katun merupakan jenis kain yang terbuat dari serat kapas, mempunyai sifat mudah menyerap  bahan alami maupun kimia dan banyak digunakan untuk bahan media batik. Telah dilakukan penelitian ekstraksi pada lima jenis zat warna alam dengan menggunakan air. Variasi antara bahan pembawa zat warna dengan air adalah 1 : 6 dan 1 : 8. Fiksasi dilakukan dengan menggunakan kapur, tunjung, tawas, campuran kapur dengan tetes dan tanpa fiksasi. Penelitian dilakukan untuk mengetahui pengaruh penambahan air pada ekstraksi dan bahan fiksasi terhadap ketahanan luntur warna pada kain. Hasil penelitian menunjukan bahwa ekstraksi zat warna alam dari daun indigo, daun mangga, kulit kayu nangka, kulit buah manggis dan biji buah kesumba dengan menggunakan air sebanyak 6 dan 8 bagian, memberikan hasil yang tidak jauh berbeda. Jenis zat warna alam dan bahan fiksasi yang diaplikasikan untuk pembatikan kain katun yang memberikan ketahanan luntur baik adalah: kulit buah manggis dengan fiksasi kapur, tawas dan tanpa fiksasi, biji buah kesumba/bixa dengan fiksasi tunjung dan tawas, kulit kayu nangka dengan fiksasi tunjung, daun mangga dengan fiksasi tawas. Daun indigo mempunyai ketahanan luntur warna yang baik sampai sangat baik terhadap pencucian, tetapi kurang baik sampai baik terhadap sinar terang hari. Penggunaan fiksasi campuran kapur dan tetes tebu menghasilkan ketahanan luntur warna pencucian dan sinar terang hari lebih rendah dibanding fiksasi dengan kapur. Ketahanan luntur dari kelima zat warna alam terhadap pencucian lebih baik dibanding ketahanan luntur terhadap sinar terang hari. Kata kunci: zat warna alam, ekstraksi, fiksasi, katunABSTRACTThe cotton fabric is a type of fabric made from cotton fiber, its easily absorbed material both natural and chemical, and widely used as a material for batik.Research extraction of five types of natural dyes made with a variety of colour materials carrier and the use of water is 1:6 and 1:8. Fixation of color on

Pengaruh Panjang Serat Terhadap Nilai Koefisien Absorpsi Suara dan Sifat Mekanik Komposit Serat Ampas Tebu dengan Matriks Gipsum

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Stefanus Laga Suban

2015-03-01

Full Text Available Penelitian ini dilakukan untuk membuat material komposit gipsum berpenguat serat alam untuk bahan penyerap suara. Permasalahan yang dikaji adalah untuk mengetahui hubungan panjang serat pada komposit ampas tebu bermatrik  gipsum terhadap nilai koefisien absorpsi suara (α, kekuatan tekan, dan kekuatan lenturnya. Panjang serat yang digunakan adalah 10mm, 30mm, dan 50mm  dengan fraksi volum 30% serat : 70% gipsum. Tujuannya untuk mendapatkan hubungan nilai koefisien absorpsi suara, kuat lentur, dan kuat tekan dengan panjang serat yang diberikan serta aplikasinya dalam material bahan penyerap suara yang memenuhi standar ISO 11654. Metode pembuatan spesimen komposit yang digunakan adalah hand lay up. Metode pengujian berdasarkan standart ASTM E1050 untuk pengujian koefisien absorpsi suara, ASTM D790 untuk pengujian kuat lentur, dan ASTM D695 untuk pengujian kuat tekan. Dari hasil pengujian didapatkan nilai koefisien absorpsi suara memenuhi standar ISO 11654 dengan nilai koefisien α lebih besar dari 0,15. Nilai kuat lentur terbaik ialah pada panjang serat 30mm sebesar 1,952 MPa. Nilai kuat tekan terbaik ialah pada panjang serat 50mm sebesar 2,005 MPa

Pembuatan dan Pengujian Kualitas Semen Portland Yang Diperkaya Silikat Abu Ampas Tebu

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Suci Wulandari, Indah Pratama

2015-01-01

Penelitian ini mengkaji pengaruh penambahan abu ampas tebu terhadap kuat tekan mortar dan sifat fisis semen portland komposit, meliputi: kehalusan semen, kebutuhan air semen, waktu pengikatan semen, pemuaian dan komposisi kimia semen. Dari hasil penelitian, besar kuat tekan pada penggunaan abu ampas tebu dengan kadar 9% merupakan penambahan optimum pada mortar yang direndam larutan kapur jenuh Sedangkan dari hasil pengujian fisis yang meliputi kehalusan semen, kebutuhan air semen, waktu pengi...

Rickettsia

OpenAIRE

Pramestuti, Nova

2011-01-01

Mungkin sebagian orang belum mengetahui bahkan baru mendengar tentang Rickettsia. Di Indonesia, skrining terhadap kasus Rickettsia ini masih jarang dan belum banyak dilakukan penelitian. Rickettsia sebenarnya merupakan bakteri yang mempunyai sifat parasit obligat intrasel uler, berukuran kecil (0,3-0,5 x 0,8-2,0 µm), mempunyai bentuk coccobacilli, gram negatif, tidak berflagel (kecuali Rickettsia prowazekii), dan mengalami pembelahan ganda dalam set pejamu. Rickettsia dianggap sebagai kelompo...

POLA RESISTENSI KUMAN PENYEBAB DIARE TERHADAP ANTIBIOTIKA

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Yusri Dianne Jurnalis

2009-05-01

Full Text Available AbstrakResistensi kuman terhadap antibiotika sangat dipengaruhi oleh intensitas pemaparan antibiotika. Penggunaan antibiotika yang tidak rasional pada penyakit diare cenderung akan meningkatkan resistensi kuman yang semula sensitif. Perkembangan resistensi kuman terhadap antibiotika perlu dipantau agar dalam pengobatan penyakit diare dengan antibiotika dapat dilakukan pemilihan obat yang tepat.Untuk mengetahui pola resistensi kuman terhadap antibiotika pada pasien diare yang dirawat di bangsal IKA RS Dr. M. Djamil Padang dari Januari-Desember 2008.Data penelitian diperoleh dari catatan medik pasien diare yang dirawat di bangsal IKA dan dilakukan kultur dan sensitivitas dari sampel feses. Dilakukan uji resistensi terhadap kuman yang terdeteksi dengan antibiotika Ampisilin (Amp, Tetrasiklin (TE, Sulfametoxazole-Trimetoprim (STX, sebagai antibiotik ang paling banyak digunakan pada pasien diare.Dari hasil uji kultur dan sensitivitas pada 173 sampel feses didapatkan 3 jenis kuman yang terbanyak yaitu E.Coli sebanyak 92 (51.4%, Klebsiela sp 30 (16.8%, dan kuman Enterobacter sp 28 (15.6%. Resistensi kuman E.Coli terhadap antibotika AMP sebesar 53.3%, terhadap TE 67.4% dan terhadap STX 87%. Resistensi kuman Klebsiela sp terhadap antibiotika AMP sebesar 46%, terhadap TE 40% dan terhadap STX 73.3%. Dan resistensi kuman Enterobacter sp terhadap antibotika AMP sebesar 64.3%, terhadap TE 75% dan terhadap STX 82,1%.Kuman penyebab diare menunjukkan resistensi yang tinggi terhadap Sulfametoxazole-Trimetoprim (STX.Kata kunci. resistensi, antibiotika, diareAbstractMicroorganisme resistance against antibiotic is highly influenced by intensity of antibiotics exposure. Irrational use of antibiotics in diarrhea tends to increase resistance of previously sensitive microorganism. Monitoring in antibiotics development resistance is required to achieve appropriate diarrhea therapy.ARTIKEL PENELITIAN42To assess microorganism resistance pattern against antibiotics in

Pengaruh Negative Framing dan Adverse Selection terhadap Eskalasi Komitmen

OpenAIRE

Arimawan, Muhammad Sandi; Sukirno, Sukirno

2014-01-01

Penelitian ini dilakukan bertujuan untuk mengetahui: (1) Pengaruh negative framing terhadap eskalasi komitmen, (2) Pengaruh adverse selection terhadap eskalasi komitmen, (3) Pengaruh negative framing dan adverse selection secara bersama-sama terhadap eskalasi komitmen, (4) Pengaruh negative framing terhadap eskalasi komitmen dimoderasi locus of control, (5) Pengaruh adverse selection terhadap eskalasi komitmen dimoderasi locus of control, (6) Pengaruh negative framing dan adverse selection se...

Pengujian Kemampuan Daya Samak Cube Black dan Limbah Cair Gambir Terhadap Mutu Kulit Tersamak

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Gustri Yeni

2016-06-01

Cube black dan limbah cair pengolahan gambir. Konsentrasi bahan penyamak yang digunakan dalam perlakuan adalah 2%, 3% dan 4% dengan berat kulit yang akan disamak sebanyak 1 kg. Kulit tersamak diuji terhadap derajat penyamakan (DP dan uji fisik meliputi kekuatan tarik, kemuluran dan kekuatan sobek. Pada perlakuan yang sama dibandingkan dengan penyamak krom. Hasil uji kulit tersamak menunjukkan makin tinggi konsentrasi bahan penyamak makin tinggi nilai DP dan sifat fisik kulit makin baik. Kulit tersamak dari kambing menggunakan Cube black gambir pada konsentrasi 4% menghasilkan nilai DP mendekati sama dengan penyamak krom (38,45% dan 36,60%. Untuk kulit ikan tuna tersamak menghasilkan nilai DP 39,57% dan 31,35%. Bahan penyamak gambir menghasilkan nilai kekuatan tarik, kekuatan sobek dan kemuluran lebih tinggi dari penyamak krom. Nilai kekuatan tarik kulit kambing 730,37 kg/cm2, ikan tuna 353,33 kg/cm2 diperoleh dari penyamak limbah cair. Nilai kekuatan sobek kulit kambing adalah 353,33 kg/cm2, kulit ikan tuna 29,96 kg/ cm2 dan nilai kemuluran kulit ikan tuna 202,0% diperoleh dari Cube black gambir. Hasil penelitian menunjukkan bahan penyamak gambir memiliki sifat penyamak yang dapat menggantikan penyamak krom.

Boron

Science.gov (United States)

Boron is an essential micronutrient element required for plant growth. Boron deficiency is wide-spread in crop plants throughout the world especially in coarse-textured soils in humid areas. Boron toxicity can also occur, especially in arid regions under irrigation. Plants respond directly to the...

PENGARUH VARIASI SUHU POST WELD HEAT TREATMENT ANNEALING TERHADAP SIFAT MEKANIS MATERIAL BAJA EMS-45 DENGAN METODE PENGELASAN SHIELDED METAL ARC WELDING (SMAW

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Rusiyanto Rusiyanto

2012-02-01

Full Text Available Penelitian ini bertujuan Untuk mengetahui nilai kekerasan Vickers material Baja EMS-45 sebelum proses pengelasan dan setelah dilakukan proses pengelasan tanpa post weld heat treatment annealing, Untuk mengetahui berapakah suhu optimal post weld heat treatment annealing untuk material baja EMS-45 dengan variasi suhu yang digunakan 350 o C, 550 o C, dan 750 C. Untuk mengetahui struktur mikro dari material baja EMS-45 akibat variasi suhu post weld heat treatment annealing pada proses pengelasan dengan menggunakan metode pengelasan shielded metal arc welding. Bahan atau material dasar yang digunakan pada penelitian ini adalah Baja EMS-45 dengan ketebalan pelat 10 mm, lebar pelat 20 mm dan panjang 100 mm. Berdasarkan hasil pengujian nilai kekerasan tertinggi setelah proses pengelasan terletak pada daerah Logam Las. Pengelasan non PWHT memiliki nilai kekerasan paling tinggi setelah proses pengelasan yaitu sebesar 183,2 VHN. Suhu optimal Post Weld Heat Treatment Annealing untuk material baja EMS-45 adalah pada suhu 750 C. Karena pada PWHT pada suhu tersebut mengalami penurunan kekerasan yang besar yaitu sebesar 127,2 VHN, sehingga material baja EMS-45 dapat memperbaiki sifat mampu mesinnya. Struktur mikro dari material baja EMS-45 sebelum proses pengelasan berupa grafit serpih, perlit dan ferit, setelah dilakukan proses pengelasan mempunyai struktur mikro berupa matrik ferit dan grafit pada daerah logam las, matrik perlit kasar dan grafit serpih pada daerah HAZ dan struktur perlit, grafit serpih dan ferit pada daerah logam induk o o

Antifungal effect of Sticophus hermanii and Holothuria atra extract and its cytotoxicity on gingiva-derived mesenchymal stem cell

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Kristanti Parisihni

2013-12-01

and Holothuria atra terhadap Candida albicans dan sitotoksisitasnya terhadap stem sel mesenkimal yang berasal dari gingiva manusia. Metode: Penelitian ini merupakan penelitian eksperimental laboratoris dengan rancangan post test only control group design. Ekstrak metanol Sticophus hermanii dan Holothuria atra pada konsentrasi 1%, 0,5%; 0,25%; 0,13%, 0,07%; 0,03%, 0,02% and 0,01% diuji sitoksisitasnya terhadap stem sel mesenkimal yang berasal dari gingiva. Viabilitas sel diukur dengan menggunakan metode MTT. Sifat anti jamur terhadap Candida albicans diuji dengan metode difusi. Data dianalisis dengan ANOVA dan LSD. Hasil: Ekstrak Sticophus hermanii tidak menunjukkan adanya toksisitas pada seluruh konsentrasi (p>0,05, sedangkan Holothuria atra menunjukkan adanya toksisitas pada konsentrasi 1% dan tidak toksik pada konsentrasi di bawahnya (p<0,05. Kedua ekstrak mampu menghambat pertumbuhan Candida albicans in vitro yang ditunjukkan dengan adanya zona jernih disekitar disk pada semua konsentrasi (p<0,05. Simpulan: Ekstrak Stichopus hermanii dan Holothuria atra mempunyai daya anti jamur terhadap Candida albicans. Ekstrak teripang bersifat tidak toksik terhadap stem sel mesenkimal yang berasal dari gingiva masing-masing pada konsentrasi Sticophus hermanii ≤ 1%, dan Holothuria atra ≤ 0,5%.

Thermoelectric properties of boron and boron phosphide CVD wafers

Energy Technology Data Exchange (ETDEWEB)

Kumashiro, Y.; Yokoyama, T.; Sato, A.; Ando, Y. [Yokohama National Univ. (Japan)

1997-10-01

Electrical and thermal conductivities and thermoelectric power of p-type boron and n-type boron phosphide wafers with amorphous and polycrystalline structures were measured up to high temperatures. The electrical conductivity of amorphous boron wafers is compatible to that of polycrystals at high temperatures and obeys Mott`s T{sup -{1/4}} rule. The thermoelectric power of polycrystalline boron decreases with increasing temperature, while that of amorphous boron is almost constant in a wide temperature range. The weak temperature dependence of the thermal conductivity of BP polycrystalline wafers reflects phonon scattering by grain boundaries. Thermal conductivity of an amorphous boron wafer is almost constant in a wide temperature range, showing a characteristic of a glass. The figure of merit of polycrystalline BP wafers is 10{sup -7}/K at high temperatures while that of amorphous boron is 10{sup -5}/K.

Pengaruh Perbedaan Jenis Asam dan Waktu Demineralisasi pada Nilai Rendemen dan Sifat Fisiko Kimia Gelatin Tulang Sapi Bali.

OpenAIRE

Ramadani, Dewi

2014-01-01

2014 Dewi Ramadani (I 411 10 267). Pengaruh Perbedaan Jenis Asam dan Waktu Demineralisasi pada Nilai Rendemen dan Sifat Fisiko Kimia Gelatin Tulang Sapi Bali. Muhammad Irfan Said Sebagai Pembimbing Utama dan Farida Nur Yuliati Sebagai Pembimbing Anggota. Gelatin merupakan senyawa hasil hidrolisis serabut kolagen secara persial. Tujuan dari penelitian ini adalah untuk melihat pengaruh jenis larutan dan waktu demineralisasi pada nilai rendemen dan sif...

PENGARUH PELATIHAN DAN PENGEMBANGAN TERHADAP MOTIVASI DAMPAKNYA TERHADAP PRESTASI KERJA KARYAWAN DI LOKAWISATA BATURRADEN

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Sopa Martina

2016-03-01

  Abstrak - Dalam suatu organisasi faktor Sumber Daya Manusia (SDM mempunyai peranan yang penting dibandingkan dengan faktor lain. Apabila organisasi mengalami kegagalan dalam mencapai tujuan, maka faktor manusia dapat menjadi penyebab didalamnya. Oleh karena itu karyawan perlu mendapatkan pelatihan dan pengembangan untuk dapat memotivasi diri sendiri untuk bekerja dengan lebih baik sehingga tercapai prestasi kerja yang baik pula. Penelitian ini dilakukan dengan menggunakan metode deskriptif. Berdasarkan hasil penelitian dari 61 orang responden tersebut maka didapat hasil dalam kategori baik sebesar 81,8% untuk pelatihan dan pengembangan yang tersedia, hasil dalam kategori baik sebesar 74,3% untuk motivasi karyawan, dan hasil dalam prestasi kerja karyawan Lokawisata Baturraden sebesar 86,3% dalam kategori sangat baik. Sedangkan untuk pengaruh pelatihan dan pengembanagn terhadap motivasi karyawan didapat nilai korelasi sebesar 41,21%, dan untuk pengaruh variabel motivasi terhadap prestasi kerja karyawan Lokawisata Baturraden  sebesar 11,42%. Sehingga didapat nilai total untuk pengaruh pelatihan dan pengembangan terhadap motivasi dan dampaknya terhadap prestasi kerja sebesar 52,63%. Sisanya sebesar 47,37% dipengaruhi oleh faktor lain.   Kata kunci : motivasi, pelatihan dan pengembangan, prestasi kerja

OPINI MAHASISWA TERHADAP PERILAKU SEKS PRANIKAH

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Mega Ardina

2017-09-01

Full Text Available Tingginya angka perilaku seks pranikah berimbas pada bertambahnya jumlah pengidap HIV/AIDS, aborsi, kematian ibu dan bayi, serta permasalahan lainnya. Penelitian ini akan membahas mengenai opini mahasiswa terhadap perilaku seks pranikah di Yogyakarta dan faktor-faktor yang mempengaruhinya. Metode dasar yang digunakan dalam penelitian ini adalah metode deskriptif dengan menggunakan pendekatan mixed methods, dan strategi eksplanatoris sekuensial. Teknik pengumpulan data dilakukan menggunakan kuesioner terhadap 60 mahasiwa di Yogyakarta secara random. Analisis data secara kuantitatif dilakukan dengan menggunakan software SPSS 16.0 dan sebagai pelengkap pembahasan dilakukan analisis secara kualitatif. Hasil penelitian menunjukkan bahwa faktor-faktor yang berpengaruh terhadap opini mahasiswa adalah sikap mahasiswa terhadap perilaku seks pranikah, keluarga, dan media. Dari tiga faktor yang berpengaruh tersebut, yang memiliki pengaruh positif paling tinggi kepada opini mahasiswa adalah keluarga.Kata kunci: Opini, mahasiswa, perilaku seks pranikah

Karakteristik Cumi-Cumi Analog dari Surimi Ikan Patin (Pangasius hypopthalmus dengan Menggunakan berbagai Jenis Pati

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Theresia Dwi Suryaningrum

2017-05-01

Full Text Available Cumi-cumi analog merupakan produk olahan tiruan dari surimi yang memiliki tekstur elastis, warna putih dan rasa khas cumi-cumi. Penelitian pembuatan cumi-cumi analog dari surimi ikan patin (Pangasius hypopthalmus dengan menggunakan berbagai jenis pati telah dilakukan.Penelitian ini dibagi menjadi 2 tahap, yaitu tahap 1 berupa optimasi formula cumi-cumi analoguntuk mendapatkan tekstur dan warna seperti produk yang ditiru. Formulasi cumi-cumi analog didasarkan pada formulasi kamaboko dengan perlakuan penambahan karaginan (1% dan 5%, konjak (1,5% dan 2% dan pewarna putih (cloudy (1% dan 2%. Penelitian tahap ke 2 dilakukan untuk mempelajari pengaruh jenis pati yaitu tapioka, kentang dan sagu terhadap karakteristik cumi-cumi analog yang dihasilkan. Pengamatan dilakukan terhadap nilai gizi, sifat fisik dan sensoricumi-cumi analog yang dihasilkan. Hasil penelitian menunjukkan penggunaan kombinasi karaginan 1%, konjak 1,5% dan pewarna putih 2% menghasilkan tekstur produk yang elastisitasdan warnanya mendekati produk yang ditiru. Penggunaan berbagai jenis pati tidak berpengaruhterhadap nilai gizi dan pH, namun berpengaruh nyata terhadap sifat fisik cumi-cumi analog yang dihasilkan. Cumi-cumi analog yang diolah dengan pati sagu menghasilkan tingkat kekerasan dan elastisitas paling tinggi, namun derajat putih paling rendah dibandingkan dengan tepung lainnya. Sedangkan cumi-cumi analog yang diolah dengan pati kentang menghasilkan kekerasan,elastisitas dan daya menahan air yang paling rendah dibandingkan dengan perlakuan lainnya. Uji sensori menunjukkan bahwa cumi-cumi analog yang diolah dengan menggunakan pati tapioka menghasilkan warna, rasa dan tekstur yang lebih disukai panelis dibandingkan dengan tepunglainnya. Sedangk an cumi-cumi analog yang diolah dengan pati kentang menghasilkan kenampakan dan bau yang lebih disukai panelis, namun mempunyai tekstur dengan nilai kesukaan yang paling rendah.

Optimalisasi Konduktivitas Ionik Elektrolit Polimer Berbasis Komposit Kitosan-Zirkonia/Litium Perklorat dengan Penambahan Gliserol

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Evi Yulianti

2017-06-01

Full Text Available Untuk meningkatkan nilai konduktivitas ionik elektrolit polimer, telah dilakukan modifikasi terhadap sistem komposit kitosan-ZrO2/LiClO4 dengan menambahkan gliserol sebagai plasticizer. Pembuatan lembaran elektrolit polimer dilakukan dengan metode casting, setelah seluruh komponen dicampur secara bertahap dan diaduk dengan pengaduk magnet. Penambahan plasticizer dilakukan dengan berbagai komposisi yaitu antara 0% (g/g sampai dengan 80% (b/b. Elektrolit polimer kemudian dikarakterisasi meliputi struktur mikro dengan difraksi  sinar-X (XRD, sifat mekanik dengan uji tarik menggunakan UTM, spektrometer impedansi (LCR-meter dan pengukuran jumlah transferensi ion. Hasil karakterisasi dengan XRD dan uji sifat mekanik menunjukkan bahwa elektrolit polimer menjadi semakin amorf dan elastis dengan penambahan plasticizer. Penambahan plasticizer yang optimal adalah sebanyak 60% (b/b dimana pada komposisi tersebut masing-masing diperoleh bilangan transferensi ion tertinggi 0,85 dengan nilai konduktivitas ionik 3,52 x 10-4 S/cm.

PREVALENCE OF ACINETOBACTER BAUMANNII ISOLATED FROM CLINICAL SPECIMENS IN ADAM MALIK HOSPITAL

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Evita Mayasari

2014-05-01

Full Text Available AbstrakAcinetobacter baumannii merupakan spesies Acinetobacter spp. tersering diisolasi darimanusia, dan lebih sering dijumpai pada infeksi nosokomial dibandingkan dengan infeksi dikomunitas. Eksistensi bakteri ini di lingkungan terkait dengan keragaman reservoir, kemampuanmemperoleh gen pembawa sifat resisten antimikroba, dan sifat resisten terhadap pengeringan.Infeksi disebabkan strain A.baumannii yang resisten terhadap banyak antibiotik tidak mudahdikendalikan dan menjadi permasalahan di berbagai negara. Penelitian ini bertujuan untukmengetahui prevalensi A.baumannii dari spesimen klinis di instalasi mikrobiologi klinik RSUPHaji Adam Malik serta pola kepekaannya terhadap berbagai antibiotik. Identifikasi dan ujikepekaan menggunakan mesin otomatis Vitek 2 dengan Advanced Expert System (AES.Penelitian ini menemukan 644/3693 (17,44% isolat A.baumannii dari berbagai spesimen klinis.A.baumannii paling banyak diisolasi dari spesimen dahak. Penelitian ini menemukan 147/644(23% bahwa isolat carbapenem-resistent A.baumannii (imipenem dan meropenem. Sebagianbesar isolat sensitif terhadap colistin, amikacin dan tigecycline. Prevalensi A.baumanni yangditemukan pada penelitian ini adalah rendah namun resistensinya tinggi terhadap antibiotikterutama golongan penicillin, cephalosporin dan fluoroquinolon.AbstractAcinetobacter baumannii is the most frequent species of Acinetobacter spp. isolated fromhumans and more common in nosocomial infection than it is in community acquired infection.A.baumannii existence in environment is associated with the diversity of its reservoirs, itscapacity to accumulate genes of antimicrobial resistence, and its resistence to desiccation.Infection of Multidrug resistent (MDR strain of A.baumannii is not easy to manage and it hasbecome a problem in many countries. The aim of this retrospective study was to investigatethe prevalence of A.baumannii from routine clinical specimens sent to clinical microbiologylaboratory RSUP HAM

PENGGUNAAN BAHAN PENGISI DALAM PERBAIKAN SIFAT FISIKOKIMIA DAN ORGANOLEPTIK DODOL BUAH MERAH (Pandanus conoideus L SEBAGAI SUMBER β-KAROTEN The Use of Filler on Enhancing Physicochemical and Organoleptic Properties of Redfruit Dodol as A Source of Β-Car

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Murtiningrum Murtiningrum

2012-05-01

Full Text Available The main problem in preparation of redfruit dodol is the soft texture of dodol. In the research, preparation of red fruit dodol was done by adding different flours (wheat, rice and tapioca to the total weight of glutinous flour and redfruit paste, as much as 15 % by weight. The preferences of panelists and physicochemical properties tests were done on the redfruit dodol product. The result indicated that the best formulation was the red fruit dodol with tapioca. The panelist preference scores of colour, flavor, odor and texture of the best dodol formulation were fairly like (5.40, fairly like (5.05, like (6.05 and fairly like (5.70 respectively. The physical properties of dodol including hardness, sticky and elasticity level were 951.43 gf, 216.68 gf and 0.35 % respectively. The dodol contained moisture 37.86 %, total solid62.14 with water availibility (a 0.83 and β-carotene 1.02 ppm. ABSTRAK Permasalahan utama dalam pembuatan dodol buah merah, yaitu teksturnya lembek dan lunak. Pada penelitian ini dilakukan penambahan jenis tepung yang berbeda, yaitu tepung terigu, beras dan tapioka sebanyak 15 % (b/b dari berat tepung ketan dan pasta buah merah. Dodol yang dihasilkan dilakukan pengamatan sifat fisikokimia dan ting- kat penerimaan panelis. Hasil penelitian menunjukkan bahwa dodol formula terbaik berdasarkan sifat organoleptik dan fisikokimia adalah dodol dengan penambahan tapioka. Dodol tersebut memiliki sifat organoleptik dengan skor kesukaan warna agak suka (5,40, rasa agak suka (5,05, aroma suka (6,05 dan tekstur agak suka (5,70, sifat fisik kekerasan dan kelengketan masing-masing 951,43 dan 216,68 gf, serta kekenyalan 0,35 %,  juga memiliki sifat kimiadengan mengandung air dan total padatan masing-masing 37,86 % dan 62,14 % dengan tingkat ketersediaan air (a 0,83 dan kandungan β-karoten 1,02 ppm.

DINAMIKA EKOLOGI LAUT SULAWESI (WPP 716 SEBAGAI DAYA DUKUNG TERHADAP PERIKANAN MALALUGIS (Decapterus macarellus Cuvier, 1833

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Puji Rahmadi

2015-06-01

Full Text Available Ikan Malalugis adalah ikan pelagis kecil yang merupakan hasil tangkapan utama nelayan di perairan Laut Sulawesi. Pada tahun 2012 dilaporkan bahwa perikanan pelagis kecil menjadi salah satu hasil perikanan yang penting, dan hasil tangkapan yang dominan dari perikanan pelagis kecil tersebut adalah ikan malalugis biru (Decapterus macarellus. Jenis ikan malalugis memiliki sifat bermigrasi dan membentuk gerombolan kecil yang mana sangat dipengaruhi oleh kondisi lingkungannya. Tipe arus pasut di Teluk Manado (Laut Sulawesi merupakan arus pasut bolak balik (reversing current. Banyaknya arus yang begitu aktif merupakan salah satu faktor yang mendukung habitat ikan malalugis. Diduga kekhasan sifat distribusi arus di daerah laut Sulawesi ini yang membuat kelimpahan ikan malalugis relatif tinggi di perairan Sulawesi Utara dibandingkan dengan daerah perairan lainnya di Indonesia. Kelimpahan ikan malalugis yang tinggi mendorong ikan ini menjadi komoditas penting dalam sektor perikanan di Laut Sulawesi. Meski demikian pada tahun 2012 dilaporkan bahwa tingkat produksi ikan malalugis mengalami penurunan. Hal ini diduga karena terlalu tingginya tingkat eksploitasi atau diakibatkan oleh adanya perubahan dalam kondisi ekosistem ikan tersebut di Laut Sulawesi. Oleh karena itu studi ini dilakukan untuk mengkaji tingkat daya dukung lingkungan terhadap keberlangsungan sumberdaya perikanan malalugis di wilayah perairan Laut Sulawesi. Malalugis fish is a small pelagic fish that constitute the main catch of fishermen in the waters of North Celebes Sea. In 2012 it was reported that small pelagic fishery became one of the important fishery products and it was dominated by the species of Malalugis (Decapterus macarellus. This species has a typical behavior which was highly mobility and forming fish schooling and strongly influenced by environmental conditions. The type of tidal current in North Sulawesi coast is reversing current. This kind of current

RELIGIOUSITY COMMITMENT DALAM MEMODERASI HUBUNGAN BRAND AWARENESS TERHADAP NIAT PEMBELIAN

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Mohammad Fakhruddin Mudzakkir

2014-09-01

Full Text Available Penelitian ini bertujuan untuk mengetahui 1. Pengaruh brand awareness terhadap niat pembelian pada toko roti merk Islami, 2. Pengaruh religousity commitment terhadap niat pembelian pada toko roti merk Islami, 3. Peranan religousity commitment sebagai variabel moderator yang dapat memperkuat pengaruh brand awareness terhadap niat pembelian pada toko roti merk Islami. Jenis penelitian adalah survey. Populasinya adalah konsumen yang melakukan  pembelian pada 3 toko roti Merk Islami di Kota/Kabupaten Malang, yaitu Toko Roti Amanah, Toko Roti As Sunnah, dan Toko Roti Madinah. Teknik pengambilan sampelnya adalah accidental sampling. Penelitian ini menggunakan metode analisis Moderated Regression Analysis. Hasil analisis menunjukkan variabel brand awareness  dan religousity commitment berpengaruh positif dan signifikan terhadap niat pembelian. Religousity commitment tidak dapat berperan sebagai variabel moderasi terhadap hubungan brand awareness terhadap niat pembelian merk produk Islam

Boron-enhanced diffusion of boron from ultralow-energy boron implantation

International Nuclear Information System (INIS)

Agarwal, A.; Eaglesham, D.J.; Gossmann, H.J.; Pelaz, L.; Herner, S.B.; Jacobson, D.C.

1998-01-01

The authors have investigated the diffusion enhancement mechanism of BED (boron enhanced diffusion), wherein the boron diffusivity is enhanced three to four times over the equilibrium diffusivity at 1,050 C in the proximity of a silicon layer containing a high boron concentration. It is shown that BED is associated with the formation of a fine-grain polycrystalline silicon boride phase within an initially amorphous Si layer having a high B concentration. For 0.5 keV B + , the threshold implantation dose which leads to BED lies between 3 x 10 14 and of 1 x 10 15 /cm -2 . Formation of the shallowest possible junctions by 0.5 keV B + requires that the implant dose be kept lower than this threshold

Adsorption of boron from boron-containing wastewaters by ion exchange in a continuous reactor

International Nuclear Information System (INIS)

Yilmaz, A. Erdem; Boncukcuoglu, Recep; Yilmaz, M. Tolga; Kocakerim, M. Muhtar

2005-01-01

In this study, boron removal from boron-containing wastewaters prepared synthetically was investigated. The experiments in which Amberlite IRA 743, boron specific resin was used were carried out in a column reactor. The bed volume of resin, boron concentration, flow rate and temperature were selected as experimental parameters. The experimental results showed that percent of boron removal increased with increasing amount of resin and with decreasing boron concentration in the solution. Boron removal decreased with increasing of flow rate and the effect of temperature on the percent of total boron removal increased the boron removal rate. As a result, it was seen that about 99% of boron in the wastewater could be removed at optimum conditions

Pemanfaatan serat silicon carbon dan partikel alumina pada matrik aluminium untuk meningkatkan sifat mekanis material komposit

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Ketut Suarsana

2017-03-01

Full Text Available Abstrak: Pemanfaatan penguat material komposit berbasis serat dan juga partikel pada pembuatan bahan komposit sekarang ini sangatpotensial untuk dikembangkan dan diteliti. Beragam sumber serat dan juga penguat dalam bentuk partikel bisa didapat dari seratalami dari tumbuh-tubuhan dan juga serat yang sudah dikenakan perlakuan sebelumnya. Indonesia memiliki potensi sumberalam yang sangat potensial terutama sebgai sumber serat dari tumbuhan juga berupa logam aluminium (bauxite dari fosil.Bahan ini dapat dimanfaatkan untuk kebutuhan masyarakat industri sebagai bahan dasar pembuatan komposit bermatrikAluminium dan sebagai penguat berupa serat maupun partikel alumina. Metode pembuatan Aluminum Matrix Composite (AMCdengan proses metalurgi serbuk pada gaya tekan/kompaksi 2,5 ton mengunakan alat press hydrolik, waktu penahanan 15menit, serta proses perlakuan pada variasi komposisi berat (%wt. Variasi komposisi penguat serat Silicon Carbon (SiC danAl2O3 (alumina pada matrik Aluminium adalah : 30% SiC + 0% Al203, 27% SiC + 3% Al203, 24% SiC + 6% Al203 dan 21% SiC+ 9% Al203 dengan matrik 70% Al, pada kondisi tempertaur 500oC, 550oC dan 600oC. Setelah material komposit terbentuk, diujiuntuk mengetahui sifat mekanik akibat pengaruh variasi komposisi antara matrik dan penguatan pada komposit. Uji karakteristikdilakukan di laboratorium untuk menggetahui sifat kekuatan dan kekerasan material komposit. Selanjutnya dicari hubunganantara sifat masing-masing komposisi penguat serat SiC dan Al2O3 pembentuk komposit yang dibuat untuk mengetahui manfaatdari penguat serat dan partikel alumina.Kata Kunci: Sifat kekuatan, kekerasan, serat SiC dan Al2O3 Abstract: Utilization reinforcement fiber-based composite material and particles in the manufacture of composite materials now havepotential to be developed and researched. Various sources of fiber and reinforcement in particle form can be obtained fromnatural fibers from plants and fiber that has been subjected to a

TINJAUAN PSIKOLOGIS TERHADAP HUKUMAN MATI

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Pujiastuti Handayani

2014-10-01

Full Text Available Abstrak Tindak pidana mutilasi merupakan kejahatan terhadap tubuh dalam bentuk pemotongan bagian-bagian tubuh tertentu dari korban. Persoalan terkait tindak pidana mutilasi yaitu penerapan sanksi pidana terhadap pelaku berupa hukuman mati. Tulisan ini akan menguraikan penerapan hukuman mati terhadap tindak pidana mutilasi yang ditinjau dari perspektif psikologis, hak asasi manusia, maupun agama. Abstract The criminal act of mutilation is a crime against the body in the form of cutting certain body parts of the victim. One of the issues related to mutilation as a crime is the application of death penalty to the perpetrators. This paper describes the application of the death penalty for the perpetrator of the crime of mutilation from a psychological, human rights, and religious perspectives.

Pengaruh Service Quality Terhadap Customer Satisfication English First Surabaya Town Square

OpenAIRE

Prabowo, Randy Setio

2017-01-01

Tujuan dari penelitian ini adalah untuk menganalisa pengaruh service quality terhadap customer satisficationdan mengukur apakah memiliki pengaruh antara service quality terhadap customer satisfication baik secara stimultan maupun parsial.Hasil penelitian menunjukan bahwa service quality berpengaruh terhadap customer satisfication secara stilmultan dan secara parsial menunjukan bahwa variabel reliability dan responsiveness tidak memiliki pengaruh terhadap customer satisfication.

BIOTIPE ISOLAT LOKAL ENTEROBACTER SAKAZAKII

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Iza Ayu Saufani

2016-05-01

Full Text Available Enterobacter sakazakii telah diklasifikasikan ke dalam 16 biogrup berdasarkan sifat biokimianya dan menjadi 3 biogrup berdasarkan 20 reaksi biokimia dengan perangkat cepat API 20E. Pada tahun 2007, Iversen mengklasifikasi ulang Enterobacter sakazakii menjadi Cronobacter spp. berdasarkan sifat genotip dan biokimia seperti uji indol, pemanfaatan malonat, dan kemampuannya memproduksi asam dari dulsitol serta metil-α-D-glukosida. Pengelompokan berdasarkan sifat biokimia terhadap genus dan spesies ini belum banyak dilakukan. Penelitian ini bertujuan untuk mengelompokkan Enterobacter sakazakii yang telah diisolasi dan terkonfirmasi menggunakan PCR berdasarkan gen penyandi 16S rRNA-nya pada penelitian sebelumnya. Pengelompokan dilakukan dengan menggunakan perangkat cepat RapID ONE® dan 4 reaksi biokimia Iversen. Hasil klasifikasi menggunakan RapID ONE® kemudian dibandingkan dengan hasil klasifikasi menggunakan API 20E yang telah dilaporkan sebelumnya. Dengan menggunakan RapID ONE diperoleh 9 isolat Enterobacter sakazakii, 9 isolat Enterobacter cloacae dan 1 isolat Enterobacter cancerogenus dari 19 isolat yang diteliti. Kesembilan belas isolat uji tersebut dapat dikelompokkan menjadi 16 biotipe. Jika dibandingkan dengan menggunakan API 20E, terdapat 8 isolat yang juga teridentifikasi sebagai Enterobacter sakazakii. Berdasarkan 4 reaksi biokimia Iversen, 15 dari 19 isolat di atas dapat diklasifikasikan ke dalam Cronobacter spp. Uji pirolidonil disarankan untuk mengklasifikasikan 4 isolat yang tidak terklasifikasi dengan 4 reaksi biokimia Iversen.

PENGARUH GAYA KEPEMIMPINAN, MOTIVASI DAN DISIPLIN KERJA TERHADAP KINERJA KARYAWAN DENGAN PEMAHAMAN ETIKA KERJA ISLAMI

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Endah Susetyo Indriyati

2017-12-01

Full Text Available Tujuan penelitian ini adalah untuk menguji Pengaruh Gaya Kepemimpinan, Motivasi dan Disiplin Kerja Terhadap Kinerja Karyawan Dengan Pemahaman Terhadap Etika Kerja Islami Sebagai Variabel Moderating Studi Kasus Pada Koperasi Jasa Keuangan Syari’ah (KJKS Baitul Maal wa Tamwil (BMT Beringharjo Yogyakarta. Responden yang digunakan sebanyak 97 karyawan yang bekerja di Kantor Cabang Yogyakarta. Data diolah menggunakan analisis Partial Least Squares (PLS berbasis variance, dengan software SmartPLS 2.0. Hasil penelitian menunjukkan Gaya Kepemimpinan memiliki pengaruh yang signifikan terhadap Pemahaman Karyawan Terhadap Etika Kerja Islami, Motivasi tidak berpengaruh signifikan terhadap Pemahaman Karyawan Terhadap Etika Kerja Islami, Disiplin Kerja tidak berpengaruh signifikan terhadap Pemahaman Karyawan Terhadap Etika Kerja Islami. Sementara Gaya kepemimpinan, motivasi, dan disiplin kerja secara bersama-sama memilki pengaruh yang signifikan terhadap Pemahaman Karyawan Terhadap Etika Kerja Islami. Hasil dari analisis moderating (analisis jalur menunjukkan bahwa Gaya Kepemimpinan berpengaruh positif tidak langsung terhadap kinerja karyawan. Motivasi memiliki pengaruh negatif tidak langsung terhadap kinerja karyawan. Disiplin Kerja memilki pengaruh positif tidak langsung terhadap kinerja karyawan. Pemahaman Karyawan Terhadap Etika Kerja Islami berpengaruh positif tidak langsung terhadap kinerja karyawan. Secara keseluruhan Gaya Kepemimpinan, Motivasi, Disiplin Kerja, dan Pemahaman Karyawan Terhadap Etika Kerja Islami secara bersama-sama berpengaruh positif terhadap kinerja karyawan.

PENGARUH KONFLIK INTERPERSONAL, WORK-FAMILY CONFLICT DAN STRES, TERHADAP KEPUASAN KERJA DAN DAMPAKNYA TERHADAP KEPUASAN HIDUP

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Adnan Rajak

2015-11-01

Full Text Available AbstractThis research aims to analyze that the effect of interpersonal conflict, work family on work stress and job satisfacton, effect of work stress on job satisfactin, dan effect of job satisfaction on life satisfaction at Civil Servant Secretariat of Ministry of Eduacation and Cultural. Research Method that used is survey method at fixed lecturer of Secretariat of Ministry. This Research Type is the verification descriptive. Sample size research this is the 200 Civil Servant and the technique used strafied random sampling. Method that used to test of hypothesis is Structural Equation Modeling (SEM. The result of the study, (1 Conflict of interpersonal positive effect on the work stress, (2 Work-family conflict negative effect on the Work stress, (3 Conflict of interpersonal negative effect on the Job satisfaction, (4 Work-family conflict negative effect on the Job satisfaction, (5 Work Stress negative effect on the Job satisfaction, and (6 Job satisfaction positive effect on the Life satisfaction. Recommendation of this study is the Secretariat of Ministry should manage interpersonal conflict and family conflict in a way to identify and evaluate accurately through approaches, Collaborating, problem solving, Avoiding, Competing and Accommodating. While the employee stress can be done through the Individual and organizational approach.Keywords: Interpersonal Conflict, Work Family Conflict, Work Stress, Job Satisfaction, and Life SatisfactionAbstrakTujuan dalam penelitian ini adalah untuk mengetahui pengaruh konflik interpersonal, work-family conflict, terhadap stres kerja dan kepuasan kerja, serta pengaruh stres kerja terhadap kepuasan kerja dan kepuasan kerja terhada Kepuasan Hidup PNS pada Sekretariat Jenderal Kementerian Pendidikan dan Kebudayaan. Metode penelitian yang digunakan adalah metode survey pada PNS Sekretariat Jenderal. Ukuran sampel penelitian ini adalah 200 PNS dan menggunakan teknik strafied random sampling. Meode yang

Boron reclamation

International Nuclear Information System (INIS)

Smith, R.M.

1980-07-01

A process to recover high purity 10 B enriched crystalline boron powder from a polymeric matrix was developed on a laboratory basis and ultimately scaled up to production capacity. The process is based on controlled pyrolysis of boron-filled scrap followed by an acid leach and dry sieving operation to return the powder to the required purity and particle size specifications. Typically, the recovery rate of the crystalline powder is in excess of 98.5 percent, and some of the remaining boron is recovered in the form of boric acid. The minimum purity requirement of the recovered product is 98.6 percent total boron

Real-time boronization in PBX-M using erosion of solid boronized targets

International Nuclear Information System (INIS)

Kugel, H.W.; Timberlake, J.; Bell, R.; LeBlanc, B.; Okabayashi, M.; Paul, S.; Tighe, W.; Hirooka, Y.

1994-11-01

Thirty one real-time boronizations were applied to PBX-M using the plasma erosion of solid target probes. More than 17 g of boron were deposited in PBX-M using this technique. The probes were positioned at the edge plasma to optimize vaporization and minimize spallation. Auger depth profile analysis of poloidal and toroidal deposition sample coupon arrays indicate that boron was transported by the plasma around the torus and deep into the divertors. During discharges with continuous real-time boronization, low-Z and high-Z impurities decreased rapidly as plasma surfaces were covered during the first 20-30 discharges. After boronization, a short-term improvement in plasma conditions persisted prior to significant boron erosion from plasma surfaces, and a longer term, but less significant improvement persisted as boron farther from the edge continued gettering. Real-time solid target boronization has been found to be very effective for accelerating conditioning to new regimes and maintaining high performance plasma conditions

Sifat filler kayu keruing terhadap vulkanisat karet

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Herminiwati Herminiwati

1999-12-01

Full Text Available The purpose of this research was to investigate the properties of keruing wood filler in their application on vulacanized rubber of shoes soles. To know its suitability for rubber goods filler, the properties of keruing wood filler was investigated by comparing with carbon black N330. Keruing wood filler were made by carbonization process at temperature 450oC for one hour and activation process with NaCl 4% for twenty four hours, followed by pyrolisis at temperature 500oC for one hour. Filler were milled and sieved by 400 mesh siefter. The standard compound formula was prepared base on ASTM D 3192 with various filler level of keruing wood filler, carbon black N330 either separately formulated of combination. The research showed that using keruing wood filler in the amount of 30-70 phr could meet 75% the requirements of SNI. 12-0172-1987 : Canvas shoes for general purpose, where as carbon black N330 in the amount of 30-70 phr could meet 87,5% the requirements of SNI. 12-0172-1987. Combination of keruing wood filler and carbon black showed that keruing wood filler could substitute 25-57 phr of carbon black.

Ceramic silicon-boron-carbon fibers from organic silicon-boron-polymers

Science.gov (United States)

Riccitiello, Salvatore R. (Inventor); Hsu, Ming-Ta S. (Inventor); Chen, Timothy S. (Inventor)

1993-01-01

Novel high strength ceramic fibers derived from boron, silicon, and carbon organic precursor polymers are discussed. The ceramic fibers are thermally stable up to and beyond 1200 C in air. The method of preparation of the boron-silicon-carbon fibers from a low oxygen content organosilicon boron precursor polymer of the general formula Si(R2)BR(sup 1) includes melt-spinning, crosslinking, and pyrolysis. Specifically, the crosslinked (or cured) precursor organic polymer fibers do not melt or deform during pyrolysis to form the silicon-boron-carbon ceramic fiber. These novel silicon-boron-carbon ceramic fibers are useful in high temperature applications because they retain tensile and other properties up to 1200 C, from 1200 to 1300 C, and in some cases higher than 1300 C.

Pemanfaatan Limbah Investment Menjadi Barang Kerajinan

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Hastuti Kusreni

2016-04-01

Full Text Available Penelitian ini dimaksudkan untuk memanfaatkan kembali limbah investment padat yang dihasilkan dengan menggunakan teknologi proses pembuatan barang kerajinan yang bisa  diterapkan untuk usaha kecil kerajinan. Pada pembuatan perhiasan dengan metode wax lost casting digunakan bahan investment powder yang menghasilkan limbah padat investment. Limbah padat investment bisa dibuat barang kerajinan dengan cara menambah resin katalist, gips, alkasit, sabut kelapa, semen putih, yang bertujuan untuk memperbaiki sifat plastisitas, meningkatkan kekuatan dan mempercepat pengeringan. Untuk menentukan kualitas sampel dilakukan uji terhadap sifat plastisitas, kekuatan, kekerasan dan waktu pengeringan yang dilakukan secara visual. Hasil olahan limbah investment dengan penambahan gips, alkasit, sabut kelapa dengan komposisi 10:2:1:4, pengeringan selama 3 hari menghasilkan barang kerajinan yang kurang keras, plastis dan kuat. Hasil olahan limbah investment dengan penambahan gips, semen putih dengan komposisi 10:2:4, pengeringan selama 3 jam menghasilkan barang kerajinan yang keras dan plastis. Kata kunci : limbah investment padat

PENGARUH KOMPONEN WORKING CAPITAL TERHADAP PROFITABILITAS PERUSAHAAN

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Anggita Langgeng Wijaya

2012-03-01

Full Text Available Penelitian ini menguji efek komponen modal kerja terhadap profitabilitas  perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia selama periode 2005-2007. Komponen modal kerja yang digunakan dalam penelitian ini meliputi aktiva lancar terhadap rasio aset total, kewajiban lancar terhadap  rasio aset total, rasio lancar, rasio leverage dan uang tunai. Populasi penelitian ini adalah semua perusahaan manufaktur di Bursa Efek Indonesia. Metode pengambilan sampel yang digunakan adalah metode purposif. Dan analisis regresi berganda digunakan untuk uji hipotesisnya. Hasil penelitian menunjukkan bahwa: komponen modal kerja memiliki pengaruh penting pada profitabilitas perusahaan. Kewajiban lancar terhadap rasio aset total, rasio lancar dan leverage berdampak negatif terhadap profitabilitas. Di sisi lain, current aset terhadap aset rasio total dan cash ratio berdampak positif pada profitabilitas. This research tests the effect of working capital’s component to the profitability of manufacturing company listed in Indonesia Stock Exchange over the period of 2005-2007. The working capital’s components used in this research include current asset to total asset ratio, current liabilities to total asset ratio, current ratio, leverage and cash ratio. Population of this research is all of manufacturing company at Indonesia Stock Exchange. Sampling method uses purposive sampling method. Hypothesis test uses multiple regression analysis. The results show that working capital component has significance influence on corporate profitability, current liabilities to total asset ratio, current ratio and leverage have negative impact on profitability. In other side, current asset to total asset ratio and cash ratio have positive impact on profitability.

PENGEMBANGAN KINERJA PERAWAT TERHADAP PENCEGAHAN INFEKSI FLEBITIS DI RUMAH SAKIT

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Noor Amaliah

2017-09-01

Full Text Available Flebitis merupakan masalah serius karena mengancam kesehatan dan keselamatan pasien. Flebitis mempunyai dampak terhadap kualitas pelayanan dan peningkatan pembiayaan pelayanan kesehatan. Kejadian flebitis yang tinggi mencerminkan rendahnya mutu pelayanan keperawatan dalam hal pencegahan dan pengendalian infeksi. Tujuan dari penelitian ini menganalisis pengembangan model kinerja perawat terhadap pencegahan infeksi flebitis di Rumah Sakit Islam Banjarmasin. Penelitian ini menggunakan metode kuantitatif dengan desain Explanatory Research menggunakan pendekatan cross sectional dan Focus Group Discussion. Populasi 69 orang perawat pelaksana. Sampel berjumlah 65 responden. Tekhnik sampling menggunakan purposive sampling. Hasil penelitian ini adalah tidak terdapat pengaruh faktor individu, faktor psikologis dan faktor organisasi terhadap kinerja perawat terhadap pencegahan infeksi flebitis dengan nilai T-Statistik > 1,96 dan p Value < 0,05. Kesimpulan penelitian adalah tidak terdapat pengaruh faktor-faktor yang mempengaruhi kinerja perawat terhadap pencegahan infeksi flebitis. Saran dari penelitian ini diharapkan agar perawat dapat meningkatkan kinerjanya terhadap pencegahan infeksi flebitis melalui sikap, motivasi maupun dukungan dari supervisi.

PERANAN KOHESIVITAS KELOMPOK DAN KECERDASAN EMOSIONAL TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOR

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Eka Ruliza Harahap

2017-08-01

Full Text Available Tujuan penelitian adalah untuk mengetahui peranan kohesivitas kelompok dan kecerdasan emosional terhadap organizational citizenship behavior. Populasi penelitian adalah karyawan departemen produksi PT. Tanimas Soap Industries dimana seluruh anggota populasi berpartisipasi sebagai subyek penelitian. Data penelitian dikumpulkan dengan menggunakan tiga skala psikologi yaitu skala kohesivitas kelompok, skala kecerdasan emosional, dan skala organizational citizenship behavior. Analisa terhadap data yang terkumpul dilakukan dengan menggunakan uji regresi linear sederhana dan berganda.Hasil penelitian menunjukkan bahwa kohesivitas kelompok dan kecerdasan emosional berperan terhadap organizational citizenship behavior.Kecerdasan emosional diketahui memberikan sumbangan lebih besar terhadap organizational citizenship behavior dibandingkan kohesivitas kelompok. Aspek group integration social dari kohesivitas kelompok dan dimensi self-awareness dari kecerdasan emosional memberikan kontribusi paling besar terhadap organizational citizenship behavior.

PENERAPAN PULSED ELECTRIC FIELD PADA PASTEURISASI SARI BUAH APEL VARIETAS ANA: KAJIAN KARAKTERISTIK NILAI GIZI, SIFAT FISIK, SIFAT KIMIAWI DAN MIKROBIA TOTAL Application of Pulsed Electric Field in Pasteurization of Apple Juice of Ana Cultivar : Study on

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La Choviya Hawa

2012-05-01

Full Text Available Apple juice, extracted from apple of ana cultivar , was pasteurized using a pulsed electric field (PEF method. The aimof this research was to analyze the changes on nutritional, physical and chemical properties and total microbes from apple juice after pasteurization. The research was conducted from July until Oktober 2009 located in Malang. The PEF treatment was carried out using treatment time variation for 10, 20, 30, 40, 50 and 60 seconds. Several parameters of vitamin A and C, water content, density, pH, total soluable solid and total microbes were observed. The results showed that PEF treatment did not significantly change nutritional, physical and chemical properties and total microbes after pasteurization with PEF in compared with no treatment pasteurization. The highest degradation was found in treatment time for 60 seconds, i.e. 93.53 %. ABSTRAK Sari buah apel, yang diekstrak dari apel varietas ana, dipasteurisasi dengan metode pulsed electric field (PEF. Tujuanpenelitian ini adalah untuk mengetahui perubahan karakteristik nilai gizi, sifat fisik, kimiawi dan total mikrobia sari buah apel sesudah dipasteurisasi. Penelitian dilaksanakan bulan Juli sampai dengan Oktober 2009 di Malang. Penelitian ini menggunakan variasi waktu pengolahan 10, 20, 30, 40, 50 dan 60 detik. Parameter pengamatan yaitu vitamin A dan C, kadar air, berat jenis, pH, total padatan terlarut dan total mikrobia. Hasil penelitian menunjukkan bahwa nilai gizi, sifat fisik dan kimiawi dari sari apel  tidak mengalami perubahan signifikan dibandingkan sari apel tanpa perlakuan PEF. Penurunan total mikrobia terbesar pada waktu perlakuan 60 detik dengan efektivitas pembunuhan sebesar 93,53%.

ANALISIS PENGARUH EVA DAN MVA TERHADAP RETURN SAHAM PADA INDUSTRI PROPERTI DI BURSA EFEK INDONESIA PERIODE 2007-2012

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Ryan Pahlawan

2015-04-01

Full Text Available Abstrak: Tujuan dari penelitian ini adalah untuk mengetahui dan menganalisis: (1 pengaruh Economic Value Added (EVA terhadap return saham (2 pengaruh Market Value Added (MVA terhadap return saham (3 pengaruh Economic Value Added (EVA dan Market Value Added (MVA terhadap return saham antara variabel kinerja keuangan industri properti di Bursa Efek Indonesia pada periode 2007-2012. Kegunaan teoritis adalah untuk memberikan kontribusi tentang pengetahuan manajemen keuangan, yang dapat digunakan sebagai acuan untuk penelitian berikutnya kinerja keuangan terutama tentang industri properti di Bursa Efek Indonesia. Kegunaan praktis adalah untuk mengetahui pengaruh tingkat Economic Value Added (EVA dan Market Value Added (MVA terhadap kinerja keuangan untuk kontribusi memberi kepada manajemen properti umum dalam mengelola variabel kinerja industri properti Bursa Efek Indonesia.Penelitian ini menggunakan data sekunder yang dikumpulkan dari data Bursa Efek Indonesia, dan Departemen Riset menurut sifat laporan keuangan pada periode 2007-2012. Sampel adalah 54 variabel dan dianalisis dengan regresi berganda metode statistik linier. Total nilai determinasi adalah 0,368, artinya ini adalah 36,8% informasi dalam data dapat dijelaskan oleh model dan 63,2% di bawah variabel lain dan error. Kesimpulan dari penelitian ini adalah: (1 Variabel Economic Value Added (EVA berpengaruh positif terhadap return saham; (2 Variabel Market Value Added (MVA memiliki pengaruh negatif terhadap Return Saham; Mengacu pada kesimpulan penelitian diatas maka disarankan adalah: (1 Dioptimalkan Economic Value Added (EVA untuk mencapai pendapatan dan keuntungan dari return saham (2 Mengelola Variabel Market Value Added (MVA pada kondisi baik untuk menjaga stabilitas keuangan dan mendapatkan dipercaya dari investor Bursa Efek Indonesia (3 Fokus ke Manajemen Risiko, Jasa, perusahaan Visi & Misi, dan Active keterampilan dan pengetahuan karyawan perusahaan yang lebih tinggi untuk

Aspects of the chemistry of boron

International Nuclear Information System (INIS)

Moellinger, H.

1976-01-01

Crystal phases of elementary boron are reviewed as well as boron-sulphur, boron-selenum, boron-tellurium, and boron-nitrogen compounds, carboranes, and boron-carbohydrate complexes. A boron cadastre of rivers and lakes serves to illustrate the role of boron in environmental protection. Technically relevant boron compounds and their uses are mentioned. (orig.) 891 HK/orig. 892 MB [de

Analisis Sikap Konsumen terhadap Produk Fashion Lokal dan Impor

OpenAIRE

Setiawan, Evelyn

2014-01-01

Abstrak: Analisis Sikap Konsumen Terhadap Produk Fashion Lokal dan Impor. Penelitian ini bertujuan untuk menganalisis sikap konsumen terhadap produk fashion lokal dan impor yang akan berpengaruh terhadap keputusan konsumsi. Sampel yang akan digunakan dalam penelitian ini adalah 1.000 mahasiswa dari 10 perguruan tinggi swasta terbesar di Surabaya. Pengambilan data dilakukan dengan metode kuesioner. Hasil pengujian statistik menunjukkan bahwa sebagian besar mahasiswa di Surabaya merasa bangga d...

Pengaruh Customer Perceived Value Terhadap Customer Satisfaction PT. Xyz

OpenAIRE

Sucahyo, Martinus Wilman

2017-01-01

Penelitian ini membahas tentang Customer Perceived Value terhadap Customer Satisfaction PT. XYZ. Dalam penelitian ini, Customer Perceived Value diukur melalui dimensi Core Product Value, Service Value dan Relationship Value. Masing-masing dimensi ini akan diuji pengaruhnya terhadap Customer Satisfaction, baik secara simultan maupun secara parsial, serta dimensi mana yang paling berpengaruh terhadap Customer Satisfaction. Sampel penelitian berjumlah 100 pelanggan PT. XYZ. Data penelitian diola...

The determination of boron and carbon in reactor grade boron carbide

International Nuclear Information System (INIS)

Crossley, D.; Wood, A.J.; McInnes, C.A.J.; Jones, I.G.

1978-09-01

The sealed tube method of dissolution at high temperature and pressure has been successfully applied in the analysis of reactor grade boron carbide for the determination of boron. A 50 mg sample of boron carbide is completely dissolved by heating with concentrated nitric acid in a sealed tube at 300 0 C. The boron content of the resultant sample solution is determined by the mannitol potentiometric titration method. The precision of the method for the determination of 2.5 mg of boron using the Harwell automatic potentiometric titrator is 0.2% (coefficient of variation). The carbon content of a boron carbide sample is determined by combustion of the sample at 1050 0 C in a stream of oxygen using vanadium pentoxide to ensure the complete oxidation of the sample. The carbon dioxide produced from the sample is measured manometrically and the precision of the method for the determination of 4 mg of carbon is 0.4% (coefficient of variation). (author)

ANALISIS PENGARUH PERUBAHAN EARNINGS DAN RISIKO PASAR TERHADAP STRUKTUR MODAL

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Endi Sarwoko

2006-05-01

Full Text Available Penelitian ini bertujuan untuk menguji perbedaan rata-rata struktur modal antar industri, menguji pengaruh perubahan earnings perusahaan terhadap struktur modal, dan menguji pengaruh risiko pasar dengan struktur modal perusahaan. Struktur modal dalam penelitian ini diproksikan dengan debt to equity ratio dan debt to total assets. Data diperoleh dari Pojok Bursa Efek Jakarta (BEJ Universitas Brawijaya, sampel sebanyak 40 perusahaan yang diambil secara Purposive dengan kriteria perusahaan-perusahaan tersebut aktif mencatatkan laporan keuangannya di BEJ dan aktif melakukan perdagangan saham selama 6 tahun terakhir. Hasil analisis menunjukkan bahwa terdapat pengaruh terbalik antara perubahan earnings perusahaan terhadap D/E tetapi perubahan earnings ternyata tidak berpengaruh signifikan terhadap D/A. Risiko pasar tidak berpengaruh signifikan terhadap debt to equity, hasil ini menunjukkan bahwa ketika akan melakukan pembelian saham investor tidak mempertimbangkan risiko pasar. Sedangkan berdasarkan pengaruh terhadap D/A diperoleh hasil risiko pasar berpengaruh signifikan terhadap debt to total assets,  manajemen perusahaan sangat memperhatikan dampak risiko pasar dalam menentukan kebijakan struktur modal perusahaan, karena dalam memberikan pinjaman kreditur biasanya sangat mempertimbangkan aset yang dimiliki perusahaan didanai dari mana, hutang atau modal sendiri.

TINGKAT KEPUASAN PELANGGAN TERHADAP PELAYANAN DI KFC MAKASSAR TOWN SQUARE

OpenAIRE

RAMADHANI, IRMA

2017-01-01

2017 Penelitian ini bertujuan untuk mengetahui tingkat kepuasan pelanggan terhadap pelayanan di KFC Makassar Town Square. Penelitian ini dilaksanakan terhadap pelanggan KFC Makassar Town Square yang telah bertransaksi lebih dari satu kali. Penelitian ini merupakan penelitian kuantitatif deskriptif dengan mendeskripsikan atau menggambarkan tentang tingkat kepuasan pelanggan terhadap pelayanan. Jumlah sampel penelitian 83 pelanggan KFC Makassar Town. Analisis data menggunak...

A technique to prepare boronated B72.3 monoclonal antibody for boron neutron capture therapy

International Nuclear Information System (INIS)

Ranadive, G.N.; Rosenzweig, H.S.; Epperly, M.W.

1993-01-01

B72.3 monoclonal antibody has been successfully boronated using mercaptoundecahydro-closo-dodecaborate (boron cage compound). The reagent was incorporated by first reacting the lysine residues of the antibody with m-maleimidobenzoyl succinimide ester (MBS), followed by Michael addition to the maleimido group by the mercapto boron cage compound to form a physiologically stable thioether linkage. Boron content of the antibody was determined by atomic absorption spectroscopy. For biodistribution studies, boronated antibody was radioiodinated with iodogen. 125 I-labeled and boronated B72.3 monoclonal antibody demonstrated clear tumor localization when administered via tail vein injections to athymic nude mice bearing LS174-T tumor xenografts. Boronated antibody was calculated to deliver 10 6 boron atoms per tumor cell. Although this falls short of the specific boron content originally proposed as necessary for boron neutron capture therapy (BNCT), recent calculations suggest that far fewer atoms of 10 B per tumor cell would be necessary to effect successful BNCT when the boron is targeted to the tumor cell membrane. (author)

Implantation of boron in silicon

International Nuclear Information System (INIS)

Hofker, W.K.

1975-01-01

The distribution versus depth of boron implanted in silicon and the corresponding electrical activity obtained after annealing are studied. The boron distributions are measured by secondary-ion mass spectrometry. Boron distributions implanted at energies in the range from 30 keV to 800 keV in amorphous and polycrystalline silicon are analysed. Moments of these distributions are determined by a curve-fitting programme and compared with moments calculated by Winterbon. Boron distributions obtained by implantations along a dense crystallographic direction in monocrystalline silicon are found to have penetrating tails. After investigation of some possible mechanisms of tail formation it is concluded that the tails are due to channelling. It was found that the behaviour of boron during annealing is determined by the properties of three boron fractions consisting of precipitated boron, interstitial boron and substitutional boron. The electrical activity of the boron versus depth is found to be consistent with the three boron fractions. A peculiar redistribution of boron is found which is induced by the implantation of a high dose of heavy ions and subsequent annealing. Different mechanisms which may cause the observed effects, such as thermal diffusion which is influenced by lattice strain and damage, are discussed. (Auth.)

PERANAN FAKTOR LINGKUNGAN DALAM PEMULIAAN IKAN

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Anang Hari Kristanto

2007-06-01

Full Text Available Kegiatan pemuliaan ikan selain dipengaruhi oleh genetik, juga sangat dipengaruhi oleh faktor lingkungan. Walaupun faktor ini tidak diwariskan kepada generasi berikutnya, tetapi mempengaruhi fenotif suatu individu atau populasi ikan yang akan dibudidayakan, karena faktor lingkungan yang buruk akan menutup potensi genetik dari individu atau populasi tersebut. Aspek lingkungan yang berpengaruh terhadap pemuliaan tersebut adalah padat tebar dan mortalitas; umur, suhu, dan kualitas air; sifat biologi dan fisiologi; maternal efek; kecondongan, dan cara pemberian pakan; kompensasi pertumbuhan; dan pemeliharaan komunal (bersama. Usaha pemuliaan dan budi daya perlu memperhatikan faktor-faktor ling-kungan.

PENGARUH PENGALAMAN AUDIT TERHADAP PENINGKATAN KEAHLIAN AUDITOR

OpenAIRE

AMIR, YUNITA

2014-01-01

2014 Pengaruh Pengalaman Audit terhadap Peningkatan Keahlian Auditor Effect of Audit Experience to Increase The Expertise of Auditor Yunita Amir Mediaty Kartini Penelitian ini bertujuan untuk mengukur pengaruh pengalaman audit terhadap peningkatan keahlian auditor. Penelitian ini dilakukan dengan pengisian kuesioner oleh auditor di Makassar. Variabel independen dari penelitian ini adalah lamanya masa kerja dan banya...

Persepsi Masyarakat terhadap Dampak Penambangan Batu Akik (Studi di Kecamatan Panga Kabupaten Aceh Jaya)

OpenAIRE

Jamaril, Jamaril; Usman, Saiful; Amirullah, Amirullah

2016-01-01

Penelitian yang berjudul “Persepsi Masyarakat Terhadap Dampak Penambangan Batu Akik (Studi di Kecamatan Panga Kabupaten Aceh Jaya)” ini membahas tentang persepsi masyarakat Kecamatan Panga Kabupaten Aceh Jaya terhadap dampak penambangan batu akik terhadap lingkungan serta dampak penambangan batu akik terhadap perekonomian dan lingkungan. Penelitian ini bertujuan: (1) untuk mengetahui persepsi masyarakat Kecamatan Panga Kabupaten Aceh Jaya terhadap dampak penambangan batu akik, dan (2) untuk m...

The study of high-boron steel and high-boron cast iron used for shield

International Nuclear Information System (INIS)

Pan Xuerong; Lu Jixin; Wen Yaozeng; Wang Zhaishu; Cheng Jiantin; Cheng Wen; Shun Danqi; Yu Jinmu

1996-12-01

The smelting, forging, heat-treatment technology and the mechanical properties of three kinds of high-boron steels (type 1: 0.5% boron; type 2: 0.5% boron and 4% or 2% nickel; type 3: 0.5% boron, 0.5% nickel and 0.5% molybdenum) were studied. The test results show that the technology for smelting, forging and heat-treatment (1050 degree C/0.5 h water cooled + 810 degree C/1 h oil cooled) in laboratory is feasible. Being sensitive to notch, the impact toughness of high-boron steel type 1 is not steady and can not meet the technology requirements on mechanical properties. The mechanical properties of both high-boron steel type 2 and type 3 can meet the technological requirements. The smelting technology of high-boron casting iron containing 0.5% boron was researched. The tests show that this casting iron can be smelted in laboratory and its properties can basically satisfy the technology requirements. (10 refs., 6 figs., 11 tab.)

EFEKTIVITAS MASSAGE LUMBAL DAN BREAST MASSAGE TERHADAP KONTRAKSI UTERUS PADA IBU BERSALIN KALA I

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Ipang Suparti

2017-09-01

Full Text Available Penyulit dalam persalinan antara lain adanya kelainan presentasi dan posisi, distosia karena kelainan alat kandungan, distosia karena kelainan janin, dan distosia karena kelainan his (Manuaba, 2010. Distosia karena kelainan his dapat terjadi karena sifat his yang berubah-ubah, tidak adanya koordinasi dan sinkronisasi kontraksi dan bagian–bagiannya sehingga kontraksi tidak efisien dalam mengadakan pembukaan. Kelainan his juga dapat terjadi karena his yang tidak adekuat untuk melakukan pembukaan serviks atau mendorong anak keluar. His yang tidak adekuat ini disebut dengan inersia uteri (Leveno K, 2010 dalam Atun Raudotul dkk. Upaya non farmakologis merupakan suatu upaya untuk membantu timbulnya kontraksi tanpa bantuan obat atau bahan sintetik lainnya. Dimana upaya tersebut dengan melakukan pijatan pada bagian tubuh agar merangsang pengeluaran oksitosin secara lebih alami dan aktif sehingga diharapkan tidak menimbulkan efek yang berbahaya bagi ibu maupun janin. Sampel pada penelitian ini yaitu ibu bersalin kala I di BPM Siti Sugiharti pada periode Maret-April 2016. Teknik pengambilan sampel pada penelitian ini menggunakan purposive sampling. Jenis penelitian ini menggunakan metode penelitian kuantitatif dengan desain penelitian quasi experimental yaitu desain yang mempunyai kelompok kontrol, tetapi tidak dapat berfungsi sepenuhnya untuk mengontrol variabel-variabel luar yang mempengaruhi pelaksanaan eksperimen (Sugiyono, 2013. tindakan massage lumbal yang dilakukan pada ibu bersalin kala I terjadi peningkatan kontraksi uterus sebanyak 20 (95,24% responden. Sedangkan pada tindakan breast massage terjadi peningkatan kontraksi uterus sebanyak 19 (90,48% responden. Penelitian ini dapat disimpulkan bahwa tindakan massage lumbal yang dilakukan pada ibu bersalin kala I lebih berhasil dibandingkan dengan breast massage. Terdapat perbedaan kontraksi uterus sebelum dan setelah dilakukan Breast Massage terhadap peningkatan kontraksi uterus pada ibu bersalin

PENGARUH PENDEKATAN KONTEKSTUAL TERHADAP HASIL BELAJAR BIOLOGI SISWA SMA

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Irwandi -

2013-05-01

Full Text Available Abstract: Contextual Teaching and Learning and Biology Learning Achievement among Senior High School Students. This quasi experimental study was designed to explain the effects of inquiry learning of Contextual Teaching and Learning (CTL, learning community of CTL, and entry behavior on Biology learning achievement of senior high school students of Bengkulu. The subjects were randomly selected from year-10 classes of eight schools and assigned to eight experimental classes. The study shows that: (1 the inquiry learning of CTL has no effect on the students’ cognitive learning achievement; (2 the learning community, particularly the extended one, of CTL  contributes to the students’ cognitive learning achievement; and (3 the students’ entry behavior did not affect their cognitive learning achievement when the students learned through inquiry process of CTL. Abstrak: Pengaruh Pendekatan Kontekstual terhadap Hasil Belajar Biologi Siswa SMA. Penelitian ini bertujuan untuk mengetahui: 1 pengaruh pendekatan kontekstual melalui strategi inkuiri terhadap hasil belajar kognitif siswa; 2 pengaruh pendekatan kontekstual melalui masyarakat belajar terhadap hasil belajar kognitif siswa; dan 3 pengaruh kemampuan awal siswa terhadap hasil belajar kognitifnya, pada pembela­jaran kontekstual melalui strategi inkuiri tingkat 1 dan 2. Penelitian dilakukan terhadap siswa-siswa pada pembelajaran biologi di 8 buah kelas X, masing-masing dari salah satu SMAN Bengkulu yang dipilih secara random. Penelitian ini menggunakan rancangan kuasi eksperimen Pretest-posttest Nonequivalent Control Group Design dengan rancangan penelitian faktorial 2 x 2 x 2. Hasil penelitian menunjukkan bahwa 1 pendekatan kontekstual melalui strategi inkuiri, tidak berpengaruh terhadap hasil belajar kognitif siswa di SMA 2 pendekatan kontekstual melalui masyarakat belajar berpengaruh terhadap hasil belajar kognitif siswa di SMA di mana hasil belajar kognitif melalui masyarakat belajar

Pengaruh Brand Identity Terhadap Timbulnya Brand Preference Dan Repurchase Intention Pada Merek Toyota

OpenAIRE

Halim, Beatrice Clementia

2014-01-01

Penelitian ini dilakukan untuk mengetahui pengaruh identitas merk Toyota terhadap timbulnya preferensi merek dan niat pembelian kembali konsumen terhadap merek Toyota. Toyota sebagai penguasa pasar mobil di Indonesia, memiliki keunggulan kompetitif tersendiri dibandingkan dengan pesaingnya. Kepercayaan terhadap merek Toyota juga menimbulkan adanya niat pembelian kembali konsumen terhadap merek tersebut.Teknik analisa yang digunakan dalam penelitian ini adalah kausal asosiatif dengan metode pe...

SIFAT ORGANOLEPTIK SUBTITUSI TEPUNG KIMPUL DALAM PEMBUATAN CAKE

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Taufik Rafika

2014-01-01

Full Text Available Organoleptic properties of kimpul flour substitution in the cake making. Kimpul is a one of tuber food source, which contains carbohidrate, protein, fat, some mineral and vitamins. The aims of this research is to find out the sensory properties (hedonic quality and hedonic of the kimpul cake flour substitution. This experimental research uses a completely-randomized design using an analysis of variance. The results analysis of the hedonic quality of color, texture and flavor obtain the highest mean rates at the amount of 40% substitution of kimpul flour, and the results  were not significantly different between treatments. The hedonic test of color, flavor, and texture obtain the highest mean rates at the amount of 80% substitution of kimpul flour.   Kimpul merupakan sumber pangan umbi-umbian yang mengandung karbo­hidrat, protein, lemak, beberapa mineral dan vitamin. Tujuan dari penelitian ini adalah  mengetahui sifat sensori (mutu hedonik dan hedonik cake subtitusi tepung kimpul. Penelitian eksperimen ini menggunakan metode rancangan acak lengkap  mengguna­kan analisis sidik ragam (Analysis of Variance. Hasil analisis uji mutu hedonik warna, tekstur dan rasa memperoleh rerata tertinggi pada jumlah substitusi tepung kimpul 40% yang tidak berbeda antar perlakuan. Uji hedonik (uji tingkat kesukaan warna, rasa, dan tekstur  memperoleh rerata tertinggi pada jumlah subtitusi tepung kimpul 80%.

PENGARUH CUSTOMER RELATIONSHIP MARKETING TERHADAP LOYALITAS KONSUMEN

OpenAIRE

Verawati, .

2017-01-01

Penelitian ini bertujuan untuk menganalisis pengaruh customer relationship marketing terhadap loyalitas konsumen. Data yang digunakan dalam penelitian ini adalah data primer. Data primer diperoleh dari hasil jawaban kuesioner nasabah Bank yang disebar di Yogyakarta. Alat analisis yang digunaka n untuk menganalisis pengaruh customer relationship marketing terhadap loyalitas konsumen di bank Yogyakarta adalah analisis regresi berganda metode backward. Kesimpulan yang diperoleh dalam penelitian ...

PENGARUH STRUKTUR AKTIVA, PERPUTARAN MODAL DAN PENDANAAN TERHADAP PROFITABILITAS PERUSAHAAN FARMASI

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Fitri Rahmiyatun

2016-10-01

ABSTRAK Penelitian ini dilakukan untuk menganalisis pengaruh kebijakan modal kerja yang terdiri dari struktur aktiva, perputaran modal kerja dan pendanaan modal kerja terhadap profitabilitas pada perusahaan farmasi yang tercatat di Bursa Efek Indonesia. Populasi penelitian ini adalah perusahaan farmasi yang tercatat di Bursa Efek Indonesia pada tahun 2005 sampai dengan 2015 yang berjumlah 10 perusahaan. Sedangkan sampel penelitian ini adalah dua perusahaan yaitu PT. Kimia Farma yang mewakili perusahaan milik BUMN dan PT.Kalbe Farma yang mewakili perusahaan swasta. Hasil analisis menunjukkan bahwa: (1 struktur aktiva berpengaruh positif dan sangat signifikan terhadap profitabilitas; (2 pendanaan modal kerja tidak berpengaruh terhadap profitabilitas, dan (3 struktur aktiva dan pendanaan modal kerja secara simultan berpengaruh signifikan terhadap profitabilitas.Implikasinya adalah bahwa perusahaan yang tercatat di Bursa Efek Indonesia khususnya PT. Kimia Farma dan PT. Kalbe Farma harus meningkatkan secara optimal struktur aktiva karena berpengaruh sangat signifikan terhadap profitabilitas. Peningkatan struktur aktiva akan berdampak baik terhadap kinerja perusahaan-perusahaan tersebut. Hal ini sangat relevan mengingat masih minimnya penelitian di bidang ini.   Kata kunci: Perputaran Modal Kerja, Pendanaan Modal Kerja Dan Profitabilitas.

Lattice dynamics of α boron and of boron carbide

International Nuclear Information System (INIS)

Vast, N.

1999-01-01

The atomic structure and the lattice dynamics of α boron and of B 4 C boron carbide have been studied by Density Functional Theory (D.F.T.) and Density Functional Perturbation Theory (D.F.P.T.). The bulk moduli of the unit-cell and of the icosahedron have been investigated, and the equation of state at zero temperature has been determined. In α boron, Raman diffusion and infrared absorption have been studied under pressure, and the theoretical and experimental Grueneisen coefficients have been compared. In boron carbide, inspection of the theoretical and experimental vibrational spectra has led to the determination of the atomic structure of B 4 C. Finally, the effects of isotopic disorder have been modeled by an exact method beyond the mean-field approximation, and the effects onto the Raman lines has been investigated. The method has been applied to isotopic alloys of diamond and germanium. (author)

Research of boron conversion coating in neutron detector with boron deposited GEM

International Nuclear Information System (INIS)

Ye Di; Sun Zhijia; Zhou Jianrong; Wang Yanfeng; Yang Guian; Xu Hong; Chen Yuanbai; Xiao Yu; Diao Xungang

2014-01-01

GEM is a flourishing new gas detector and nowadays its technology become more mature. It has outstanding properties, such as excellent position resolution, high counting rate, radiation resistance, simple and flexible signal readout, can be large-area detector, wide application range. Detector with boron deposited GEM uses multilayer GEM with deposited boron film as neutron conversion carrier which reads out the information of neutron shot from the readout electrode with gas amplification from every GEM layer. The detector is high performance which can meet the demands of neutron detector of a new generation. Boron deposited neutron conversion electrode with boron deposited cathode and GEM included is the core part of the detector. As boron is a high-melting-point metalloid (> 2 000 ℃), electroplating and thermal evaporation are inappropriate ways. So finding a way to deposit boron on electrode which can meet the demands become a key technology in the development of neutron detector with boron deposited GEM. Compared with evaporation, sputtering has features such as low deposition temperature, high film purity, nice adhesive, thus is appropriate for our research. Magnetron sputtering is a improved way of sputtering which can get lower sputtering air pressure and higher target voltage, so that we can get better films. Through deposit process, the research uses magnetron sputtering to deposit pure boron film on copper electrode and GEM film. This method can get high quality, nice adhere, high purity, controllable uniformity, low cost film with high speed film formation. (authors)

Hubungan Parameter Sifat Magnetik Dan Sifat Keteknikan Tanah Pada Tanah Residual Vulkanik

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Mela Faridlah

2017-10-01

Full Text Available Penelitian mengenai karakteristik tanah residual vulkanik menggunakan metode magnetik dan metode geoteknik telah dilakukan pada lereng stabil dan lereng longsor yang berada di Desa Langensari Kecamatan Lembang Kabupaten Bandung Barat Provinsi Jawa Barat. Penelitian ini dimaksudkan untuk mengetahui gambaran karakteristik suseptibilitas magnetik dan parameter keteknikan tanah residual vulkanik. Karakteristik geoteknik ditentukan melalui uji fisik berupa uji bobot isi, berat isi tanah basah, berat isi tanah kering, kadar air, derajat kejenuhan dan porositas, uji batas atterberg serta uji ukuran butir tanah.. Karakteristik magnetik ditentukan melalui uji suseptibilitas magnetik menggunakan Bartington MS2B (Magnetic Suseptibility System sensor B dual frekuensi yaitu 470 Hz dan 4,7 kHz. Hasil penelitian ini menunjukkan peningkatan nilai-nilai χLF (suseptibilitas frekuensi rendah dan χFD% (suseptibilitas bergantung frekuensi kearah horizon bagian atas profil tanah residual. Peningkatan nilai-nilai χLF dan χFD% ke arah horizon bagian atas merupakan karakteristik dari suseptibilitas magnetik.Dari hasil penelitian geoteknik dan magnetik didapatkan hasil jenis tanah residual vulkanik tersebut merupakan tanah lempung dengan mineral dominan yaitu Ilmenit. Hubungan antara parameter magnetik dan keteknikan tanah yaitu beberapa parameter keteknikan yang mempengaruhi sifat kemagnetan diantaranya berat isi tanah basah dan kadar air. Research on volcanic residual soil characteristics using magnetic methods and geotechnic methods was carried out on a stable slope and landslide slope are located in Langensari Lembang west Bandung, West Java Province. This study are intended to describe the characteristics of the magnetic susceptibility and residual volcanic soil engineering parameters. Geotechnical characteristics were determined by physical properties tests such as bulk density test, wet density, dry density, water content, degree of saturation and porosity

PENGARUH EVENT MARKETING TERHADAP BRAND IMAGE ROKOK DJARUM SUPER MILD PT DJARUM

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Ellen Madhalena

2016-10-01

  Rokok merupakan salah satu industri di Indonesia yang memiliki peningkatan setiap tahunnya. Dari data yang diperoleh untuk perusahaan rokok di Indonesia pada tahun 2014 bulan Mei, PT Djarum menempati posisi ke 3 pangsa pasar rokok di Indonesia berdasarkan survei dari CNN Indonesia 2014, dengan produk unggulan yaitu rokok low tar nicotine. Untuk mencapai tujuan perusahaan, maka setiap perusahaan menggunakan strategi dalam berpromosi. Salah satu bentuk promosi yang digunakan adalah event marketing. Event marketing yang dilaksanakan perusahaan juga harus tepat pada sasaran agar mengangkat citra merek suatu perusaan bagi konsumen. Penelitian ini bertujuan untuk mengetahui pengaruh event marketing terhadap brand image rokok Djarum Super Mild. Penelitian ini merupakan penelitian kuantitatif dengan analisis data deskriptif dan kausal dengan metode regresi linear berganda. Responden yang diteliti dalam penelitian ini berjumlah 100 pengunjung event Stage Bus Jazz Tour 2015 dengan teknik purposive sampling. Hasil penelitian secara simultan menunjukkan bahwa event marketing berpengaruh signifikan terhadap brand image rokok Djarum Super Mild. Sedangkan secara parsial menunjukkan bahwa variabel event marketing dengan dimensi involvement tidak berpengaruh signifikan terhadap brand image, interaction tidak berpengaruh signifikan terhadap brand image dengan, intensity berpengaruh signifikan terhadap brand image, individuality tidak berpengaruh signifikan terhadap brand image , innovation berpengaruh signifikan terhadap brand image, integrity tidak berpengaruh signifikan terhadap brand image.   Kata Kunci : Event Marketing, Brand Image, Rokok

ANALISIS PENGARUH TINGKAT KESEHATAN BANK TERHADAP RETURN ON ASSET

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Andy Setiawan

2017-10-01

Full Text Available Penelitian  ini  dilakukan  untuk  menganalisis pengaruh  tingkat kesehatan bank terhadap return on asset (ROA berdasarkan metode risk based bank rating (RBBR. Variabel independen yang diteliti adalah Non  Performing  Loan  (NPL, Loan to Deposit Ratio (LDR, Net Interest Margin (NIM, Capital Adequacy Ratio (CAR,  BOPO   (Biaya   Operasional/Pendapatan Operasional, Good Corporate Governance (GCG dan Posisi  Devisa  Netto  (PDN terhadap variabel dependen Return On Asset (ROA. Sampel yang digunakan  adalah  seluruh bank BUKU 4 di Indonesia selama periode 2007-2014. Teknik analisis data yang  digunakan  adalah  regresi  linier  berganda. Hasil penelitian ini menunjukkan bahwa tingkat kesehatan bank dengan metode RBBR berpengaruh signifikan secara bersama terhadap ROA. Secara parsial LDR, NIM, BOPO, dan PDN berpengaruh signifikan terhadap ROA. Sedangkan variabel NPL, GCG dan CAR tidak berpengaruh signifikan. Kemampuan prediksi dari ketujuh variabel  tersebut  terhadap  ROA  dalam  penelitian  ini  sebesar  93,7%,  sedangkan sisanya 6,3% dipengarui oleh faktor lain yang tidak dimasukkan ke dalam model penelitian.

Permodelan Risiko Kenaikan Tarif Dasar Listrik Terhadap Biaya Produksi Kapal Baru

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Very Purwo Nugroho

2012-09-01

Full Text Available Pada Tugas Akhir dikembangkan model risiko pengaruh kenaikan Tarif Dasar Listrik terhadap biaya produksi kapal baru. Variabel yang terpengaruh kenaikan TDL pada produksi kapal didapatkan dengan identifikasi dan evaluasi pemakaian energi listrik pada fasilitas produksi, pengaruh terhadap tenaga kerja serta pengaruh terhadap biaya material dan komponen  kapal. Material dan komponen tersebut dikelompokan menjadi material lokal manufaktur (Local Manufacture, lokal CKD (Completely Knock-Down, import CBU (Completely Built-Up dan import trading. Model yang dikembangkan mempunyai variabel yang terpengaruh kenaikan TDL terdiri dari (i kenaikan biaya listrik dan (ii kenaikan harga material yang sensitif terhadap kenaikan TDL. Material dan komponen yang sensitif terhadap kenaikan TDL  yaitu material kelompok lokal manufaktur seperti pelat baja dan konsumabel gas serta kelompok lokal CKD (Completely Knock-Down seperti pendingin ruangan (Air Conditioner Equipment, Main Switch Board (MSB dan Alarm Monitoring System (AMS.

Note on boron toxicity in oats

Energy Technology Data Exchange (ETDEWEB)

Langille, W M; Mahoney, J F

1959-01-01

Boron was applied at the rate of 35 pounds per acre of borax to a field of oats. With the first noticeable growth there appeared a definite chlorotic condition of the oat seedlings on plots receiving boron treatments. Analysis of chlorotic tissue at 3 weeks after seeding indicated 110 ppm boron, while apparently healthy tissue contained 6.1 ppm boron at the same stage of growth. There was a rapid decline in the boron content of the oat tissue as the crop grew older. At maturity the oat tissue from the boron-treated plots contained an average of 14.15 ppm boron as compared with 4.10 boron from untreated areas. Boron toxicity had no harmful effect so far as yields were concerned, under the conditions of this experiment. 3 references.

Method for producing polycrystalline boron nitride

International Nuclear Information System (INIS)

Alexeevskii, V.P.; Bochko, A.V.; Dzhamarov, S.S.; Karpinos, D.M.; Karyuk, G.G.; Kolomiets, I.P.; Kurdyumov, A.V.; Pivovarov, M.S.; Frantsevich, I.N.; Yarosh, V.V.

1975-01-01

A mixture containing less than 50 percent of graphite-like boron nitride treated by a shock wave and highly defective wurtzite-like boron nitride obtained by a shock-wave method is compressed and heated at pressure and temperature values corresponding to the region of the phase diagram for boron nitride defined by the graphite-like compact modifications of boron nitride equilibrium line and the cubic wurtzite-like boron nitride equilibrium line. The resulting crystals of boron nitride exhibit a structure of wurtzite-like boron nitride or of both wurtzite-like and cubic boron nitride. The resulting material exhibits higher plasticity as compared with polycrystalline cubic boron nitride. Tools made of this compact polycrystalline material have a longer service life under impact loads in machining hardened steel and chilled iron. (U.S.)

Boron-11 MRI and MRS of intact animals infused with a boron neutron capture agent

International Nuclear Information System (INIS)

Kabalka, G.W.; Davis, M.; Bendel, P.

1988-01-01

Boron neutron capture therapy (BNCT) depends on the delivery of boron-containing drugs to a targeted lesion. Currently, the verification and quantification of in vivo boron content is a difficult problem. Boron-11 spectroscopy was utilized to confirm the presence of a dimeric sulfhydryl dodecaborane BNCT agent contained in an intact animal. Spectroscopy experiments revealed that the decay time of transverse magnetization of the boron-11 spins was less than 1 ms which precluded the use of a 2DFT imaging protocol. A back-projection protocol was developed and utilized to generate the first boron-11 image of a BNCT agent in the liver of an intact Fisher 344 rat

β-Rhombohedral Boron: At the Crossroads of the Chemistry of Boron and the Physics of Frustration [Boron: a frustrated element

Energy Technology Data Exchange (ETDEWEB)

Ogitsu, Tadashi [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Schwegler, Eric [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Galli, Giulia [Univ. of California, Davis, CA (United States)

2013-05-08

In the periodic table boron occupies a peculiar, crossover position: on the first row, it is surrounded by metal forming elements on the left and by non-metals on the right. In addition, it is the only non-metal of the third column. Therefore it is perhaps not surprising that the crystallographic structure and topology of its stable allotrope at room temperature (β-boron) are not shared by any other element, and are extremely complex. The formidable intricacy of β- boron, with interconnecting icosahedra, partially occupied sites, and an unusually large number of atoms per unit cell (more than 300) has been known for more than 40 years. Nevertheless boron remains the only element purified in significant quantities whose ground state geometry has not been completely determined by experiments. However theoretical progress reported in the last decade has shed light on numerous properties of elemental boron, leading to a thorough characterization of its structure at ambient conditions, as well as of its electronic and thermodynamic properties. This review discusses in detail the properties of β-boron, as inferred from experiments and the ab-initio theories developed in the last decade.

PENGARUH ATRIBUT KEMASAN MAKANAN DAN KARAKTERISTIK KONSUMEN TERHADAP PEMBELIAN

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Tri Hanifawati

2017-04-01

Full Text Available Tujuan penelitian ini adalah untuk mengetahui pengaruh atribut kemasan makanan dan karakteristik konsumen terhadap persepsi, pencarian informasi, pemilihan alternatif, dan perilaku setelah pembelian. Pengambilan data menggunakan teknik convenience sampling kepada 400 responden dan wawancara kepada asosiasi ritel dan industri makanan. Analisis data dengan menggunakan Interpretasi Skor Interval dan Seemingly Unrelated Regression. Hasil menunjukkan bahwa atribut kualitas dan fitur kemasan berpengaruh lebih besar terhadap semua tahapan keputusan pembelian. Secara simultan karakteristik responden berpengaruh signifikan terhadap persepsi, pemilihan alternatif, dan perilaku setelah pembelian. Intensitas belanja berpengaruh signifikan terhadap persepsi dan perilaku setelah pembelian; sedangkan umur, jenis kelamin, dan pendapatan berpengaruh signifikan terhadap pemilihan alternatif dan perilaku setelah pembelian. Implikasinya, IKM makanan perlu memberikan perhatian lebih besar terhadap atribut kemasan yang berpengaruh lebih besar.THE EFFECT OF FOOD PACKAGING AND CONSUMER CHARACTERISTICS ON PURCHASE BEHAVIORABSTRACTThis study aims to determine the effect of snack package attributes and consumer characteristics on the perception, information search, alternative selection, and after purchase behaviour. The survey wasdone by the convenience sampling technique to 400 respondents and interviewingretail and food industries association. Data analysiswas Interval Score interpretation and Seemingly Unrelated Regression. The results show that the quality attributes and package features have greater effect on all purchasing decision stages. The respondent characteristics, simultaneously, significantly affect the perception, information search, alternative selection, and after purchase behaviour. The shopping intensity significantly affect the perception and after purchase behaviour; while, age, gender, and income significantly affect the alternative selection and

Evaluasi Sifat Morpologi dan Teknologi Pengolahan pada Gabah dan Beras

OpenAIRE

Santosa, Susilo

2017-01-01

Penelitian evaluasi dan beras terhadap mutu dan jumlah hasil ditekankan pada lr36 , lr38 dan Cisadane. Penelitian dilakukan di laboratorium Balai Penelitian Tanaman Pangan Karawang. Hasil studi menunjukkan diantara ketiga varitas, Cisadane mempunyai ukuran dimensi butiran yang lebih besar daripada Ir36 dan Ir38. Di antara ketiga varitas, persen kulit sekam yang tertinggi didapat 23,57 % pada lr38 diikuti 22,32% pada Ir36 dan 19,5% pada Cisadane. Persen beras pecah kulit tertinggi diperoleh pa...

Evaluasi Sifat Morpologi Dan Teknologi Pengolahan Pada Gabah Dan Beras

OpenAIRE

Santosa, Susilo

1982-01-01

Penelitian evaluasi dan beras terhadap mutu dan jumlah hasil ditekankan pada lr36 , lr38 dan Cisadane. Penelitian dilakukan di laboratorium Balai Penelitian Tanaman Pangan Karawang. Hasil studi menunjukkan diantara ketiga varitas, Cisadane mempunyai ukuran dimensi butiran yang lebih besar daripada Ir36 dan Ir38. Di antara ketiga varitas, persen kulit sekam yang tertinggi didapat 23,57 % pada lr38 diikuti 22,32% pada Ir36 dan 19,5% pada Cisadane. Persen beras pecah kulit tertinggi diperoleh pa...

ANALISIS MODEL KEPUASAN TERHADAP PEMBELIAN ULANG

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Naili Farida

2014-09-01

Full Text Available Tujuan penelitian ini yaitu untuk menguji pengaruh brand equity, nilai pelanggan dan lifestyle yang dimediasi kepuasan konsumen terhadap pembelian ulang produk gadget di Kota Semarang. Responden dalam penelitian ini adalah seluruh konsumen yang telah melakukan pembelian produk gadget merek Samsung, sebanyak 120 orang. Teknik sampling yang digunakan yaitu purposive sampling. Teknik analisis yang digunakan yaitu Partial Least Square (PLS. Hasil penelitian menunjukkan bahwa terdapat pengaruh brand equity terhadap kepuasan, namun dalam konteks lifestyle dan nilai pelanggan tidak ada pengaruh terhadap kepuasan. Sedangkan kepuasan menunjukkan adanya pengaruh terhadap pembelian ulang. Diharapkan dari hasil penelitian ini mampu meningkatkan pembelian ulang melalui brand equity, lifestyle dan nilai pelanggan dalam konteks kepuasan. The objective of the research was to test the influence of brand equity, customer value and lifestyle which were mediated by consumer satisfaction toward re-purchasing of gadget products in Semarang. The respondents of the study were all consumers who have purchased Samsung gadget products. It was a purposive sampling study with 120 respondents. The data were analyzed by Partial Least Square (PLS. The result of the study showed that there was an influence of brand equity toward satisfaction, but in the lifestyle context and customer value did not give any influence toward satisfaction. Whereas; the satisfaction gave influence toward re-purchase. It is expected that this study can increase the repurchasethrough brand equity, lifestyle and customer values in the satisfaction context.

PRAKTIK PENGALAMAN LAPANGANDAN DAMPAKNYA TERHADAP KOMPETENSI MAHASISWA PROGRAM STUDI TEKNIK INFORMATIKA DAN KOMPUTER

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Ratih Widya Nurcahyo

2015-06-01

Full Text Available Penelitian ini di bertujuan untuk mengetahui: (1 kompetensi mahasiswa STKIP PGRI Pontianak dalam kegiatan PPL di SMK, SMA, SMP se Kota Pontianak; (2 pengaruh praktik persekolahan terhadap kompetensi mahasiswa STKIP PGRI Pontianak sebagai calon guru; (3 pengaruh rencana pembelajaran terhadap kompetensi mahasiswa STKIP PGRI Pontianak sebagai calon guru; (4 pengaruh pelaksanaan pembelajaran terhadap kompetensi mahasiswa STKIP PGRI Pontianak sebagai calon guru; (5 pengaruh secara bersama-sama antara praktik persekolahan, rencana pembelajaran, dan pelaksanaan pembelajaran terhadap kompetensi mahasiswa. Hasil penelitian ini menunjukan bahwa (1 kompetensi pedagogik, kepribadian, sosial, termasuk kategori cukup dan kompetensi profesional termasuk kategori baik;(2 terdapat pengaruh positif dan signifikan antara praktek persekolahan terhadap kompetensi mahasiswa sebagai calon guru dengan nilai R2 = 0,515; p= 0,000; (3 terdapat pengaruh positif dan signifikan antara rencana pembelajaran terhadap kompetensi mahasiswa sebagai calon guru dengan nilai R2=0,272; p=0,000; (4 terdapat pengaruh positif dan signifikan antara pelaksanaan pembelajaran terhadap kompetensi mahasiswa sebagai calon guru dengan nilai R2= 0,515; p= 0,000; dan (5terdapat pengaruh positif dan signifikan antara praktik persekolahan, rencana pembelajaran, dan pelaksanaan pembelajaran secara bersama-sama terhadap kompetensi mahasiswa sebagai calon guru dengan nilai R2= 0,931. Prediksi perubahan Y ditunjukan oleh persamaan garis regresi Y = 9,463 + 0,759X1 + 0,819X2+0,763X3

Boronated liposome development and evaluation

International Nuclear Information System (INIS)

Hawthorne, M.F.

1995-01-01

The boronated liposome development and evaluation effort consists of two separate tasks. The first is the development of new boron compounds and the synthesis of known boron species with BNCT potential. These compounds are then encapsulated within liposomes for the second task, biodistribution testing in tumor-bearing mice, which examines the potential for the liposomes and their contents to concentrate boron in cancerous tissues

Pengaruh Outdoor Learning Terhadap Kemampuan Berpikir Kritis Matematis Siswa

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Prima Cristi Crismono

2017-12-01

Full Text Available Tujuan penelitian ini untuk mengetahui pengaruh Outdoor Learning terhadap kemampuan berpikir kritis matematis siswa. Hipotesis pada penelitian ini adalah Outdoor Learning berpengaruh dalam meningkatkan kemampuan berpikir kritis matematis siswa. Mengacu pada teori perkembangan kognitifnya penggunaan Outdoor Learning dengan memanfaatkan lingkungan sekitar pada media pembelajaran dan semua aktifitas belajar yang dilakukan oleh siswa di bawah pengawasan dan bimbingan guru. Penggunaan sumber belajar yang bersifat kontektual mampu mengembangkan kemampuan berpikir kritis matematis siswa. Data penelitian dapat diperoleh dengan menggunakan tes yang terdiri dari seperangkat soal uraian untuk mengukur dan mengetahui  kemampuan  awal  matematika  berupa  kemampuan  berpikir  kritis siswa. Hasil analisis pengaruh penerapan metode Outdoor Learning terhadap kemampuan berpikir kritis matematis siswa yang telah dilakukan diketahui bahwa terdapat pengaruh positif penerapan metode Outdoor Learning terhadap kemampuan berpikir kritis matematis siswa. Kesimpulan dari peneitian ini adalah metode Outdoor learning berpengaruh terhadap kemampuan berpikir kritis matematis siswa.

Perbedaan Pandangan Ajaran Sifat Melawan Hukum Materiil Tindak Pidana Korupsi

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Seno Wibowo

2015-08-01

Full Text Available ABSTRAK Penerapan ajaran sifat melawan hukum materiil dalam fungsi positif dalam Undang-Undang Nomor 20 Tahun 2001 tentang Perubahan Atas Undang-Undang Nomor 31 Tahun 1999 tentang Pemberantasan Tindak Pidana Korupsi (UU Tipikor 2001 oleh Mahkamah Agung pasca putusan Mahkamah Konstitusi telah bertentangan dengan Undang-Undang Dasar 1945 Pasal 28 ayat (1 huruf D dan asas legalitas serta asas pemisahan kekuasaan negara. Selain itu, hal tersebut juga dinilai tidak mengindahkan sudut hierarki peraturan perundang-undangan di Indonesia, sehingga tidak mencerminkan kepastian hukum. Mahkamah Agung tidak berwenang menerapkan kembali ajaran sifat melawan hukum dalam fungsi positif yang terdapat dalam UU Tipikor 2001 dikarenakan dengan hal tersebut dinyatakan tidak memiliki kekuatan hukum mengikat oleh Mahkamah Konstitusi. Putusan judicial review Mahkamah Konstitusi tidak hanya mengikat para pihak yang berperkara namun juga rakyat dan lembaga tinggi negara termasuk Mahkamah Agung. Mahkamah Agung harus melaksanakan dan mematuhi putusan judicial review tersebut mengingat kedudukan putusan Mahkamah Konstitusi sebagai negative legislation. Apabila instansi penegak hukum maupun aparaturnya menggunakan suatu instrumen hukum yang telah dinyatakan tidak mempunyai kekuatan mengikat secara hukum, maka akibat hukum yang terjadi dapat berupa kerugian finansial. Instansi penegak hukum atau aparaturnya dapat menanggung akibat hukum secara pribadi (personal liability untuk mengganti kerugian yang dituntut melalui peradilan biasa yang ditegakkan secara paksa dan demi hukum batal sejak semula (ab initio. Abstract The application of the unlawful material doctrine in a positive function in Law Number 20 in 2001 on The Amendment of Law Number 31 in 1999 on Corruption Eradication (UU Tipikor 2001 by the Supreme Court after the decision of the Constitutional Courts contrary to the Constitution of 1945 Article 28 D paragraph 1 and the principle of legality and separation of state

PERSEPSI PEMAKAI TERHADAP KUALITAS PELAYANAN TERBITAN BERKALA DI PERPUSTAKAAN PASCASARJANA UGM

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Supriyono Supriyono

2015-12-01

Full Text Available Penelitian ini mendeskripsikan Persepsi Pemakai Terhadap Kualitas Pelayanan Terbitan Berkala di Perpustakaan Pascasarjana Universitas Gadjah Mada. Permasalahan yang dikaji dalam skripsi ini adalah persepsi pemakai terhadap kualitas layanan terbitan berkala di Perpustakaan Pascasarjana UGM. Tujuan penelitian ini untuk mengetahui persepsi pemakai terhadap pelayanan terbitan berkala di Perpustakaan Pascasarjana Universitas Gadjah Mada. Dalam pembahasan ini digunakan teori servqual dari Parasuraman. Sementara analisisnya dengan menggunakan lima dimensi kualitas layanan yaitu dimensi bukti fisik, dimensi keandalan, dimensi daya tanggap, dimensi jaminan, dan dimensi empati. Penelitian ini menggunakan metode deskriptif kuantitatif dengan maksud untuk menggambarkan persepsi pemakai terhadap kualitas pelayanan terbitan berkala. Pengumpulan data dengan menggunakan angket dan wawancara. Responden penelitian ini adalah mahasiswa S2 sejumlah 100 responden. Berdasarkan hasil olah data masing—masing variabel dimensi persepsi pemakai terhadap pelayanan terbitan berkala sebagai berikut: variabel dimensi fisik sebesar 4,18 dimensi kehandalan sebesar 3,98 dimensi daya tanggap sebesar 4,11 dimensi jaminan sebesar 3,72 dimensi empati sebesar 4,18 Ada dua dimensi yang paling rendah nilainya yaitu dimensi kehandalan sebesar 3,98 dan dimensi jaminan sebesar 3,72 Mengingat nilai total rata-rata variabel persepsi pemakai adalah 4,03, maka persepsi pemakai terhadap kualitas layanan terbitan berkala di Perpustakaan Pascasarjana Universitas Gadjah Mada adalah baik. Kata kunci : Persepsi Pemakai, Kualitas Pelayanan, Terbitan Berkala

Biodistribution, toxicity and efficacy of a boronated porphyrin for boron neutron capture therapy

International Nuclear Information System (INIS)

Miura, Michiko; Micca, P.; Fairchild, R.; Slatkin, D.; Gabel, D.

1992-01-01

Boron-containing porphyrins may be useful for boron neutron capture therapy (BNCT) in the treatment of brain tumors. Porphyrins have been shown to accumulate in tumor tissue and to be essentially excluded from normal brain. However, problems of toxicity may prevent some boron-containing porphyrins from being considered for BNCT. The authors have synthesized the boronated porphyrin 2,4-bis-vinyl-o-nidocarboranyl-deuteroporphyrin IX (VCDP). Preliminary studies in tumor-bearing mice showed considerable uptake of boron at a total dose of 150 μg/gbw with low mortality. They now report that a total dose to mice of ∼ 275 μg VCDP/gbw administered in multiple intraperitoneal (ip) injections can provide 40-50μg B per gram of tumor with acceptable toxicity. Toxicity experiments and a preliminary trial of BNCT in mice given such doses are also reported

Pengaruh Customer Experience Dan Kepercayaan Terhadap Kepuasan Konsumen Di Tx Travel Klampis

OpenAIRE

Salim, Kenny Febrina; Catherine, Catherine; Andreani, Fransisca

2015-01-01

Penelitian ini bertujuan untuk mengetahui pengaruh customer experience dan kepercayaan terhadap kepuasan konsumen yang ada di TX Travel Klampis Surabaya. Penelitian ini menggunakan metode kuantitatif dengan regresi linear berganda. Berdasarkan hasil pengolahan data, dapat disimpulkan bahwa pengaruh customer experience dan kepercayaan terhadap kepuasan konsumen berpengaruh positif dan signifikan, akan tetapi customer experience memiliki pengaruh yang lebih dominan dan signifikan terhadap kepua...

A New Boron Analysis Method

Energy Technology Data Exchange (ETDEWEB)

Weitman, J; Daaverhoeg, N; Farvolden, S

1970-07-01

In connection with fast neutron (n, {alpha}) cross section measurements a novel boron analysis method has been developed. The boron concentration is inferred from the mass spectrometrically determined number of helium atoms produced in the thermal and epithermal B-10 (n, {alpha}) reaction. The relation between helium amount and boron concentration is given, including corrections for self shielding effects and background levels. Direct and diffusion losses of helium are calculated and losses due to gettering, adsorption and HF-ionization in the release stage are discussed. A series of boron determinations is described and the results are compared with those obtained by other methods, showing excellent agreement. The lower limit of boron concentration which can be measured varies with type of sample. In e.g. steel, concentrations below 10-5 % boron in samples of 0.1-1 gram may be determined.

Pengaruh Variasi Kadar Zn Dan Temperatur Hydrotermal Terhadap Struktur Dan Nilai Konduktivitas Elektrik Material Graphene

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Lita Nur Azizah

2014-09-01

Full Text Available Graphene adalah bentuk 2D dari karbon dengan sifat-sifat unggul yang menarik untuk dikembangkan. Permasalahan yang kemudian muncul adalah proses sintesis massal yang masih menjadi kendala. Penelitian ini bertujuan untuk mensintesis material graphene secara kimiawi dengan menggunakan reduktor zinc dan metode hydrothermal dan menganalisa pengaruh varaiasi penambahan massa sebesar 0,8 gram, 1,6 gram, dan 2,4 gram zinc serta variasi temperatur hydrthermal 160ᵒC, 180ᵒC, 200ᵒC. Proses karakterisasi material graphene dilakukan dengan pengujian Scanning Electron Microscope (SEM, X-Ray Diffraction (XRD, Fourier Transform Infrared spectroscopy, Uji Iodine number, dan Four Point Probe digunakan untuk mengetahui nilai konduktivitas elektrik material. Morfologi dari graphene yang dihasilkan berbentuk lembaran-lembaran transparan dan disertai dengan kerutan pada permukaannya. Nilai konduktivitas elektrik terbesar dihasilkan dari variasi panambahan serbuk zinc sebesar 0,8 gram dan temperatur hydrothermal sebesar 200ᵒC dengan nilai sebesar 0,10281 S/cm dan bilangan iodine 11384,64.

Two-channel neutron boron meter

International Nuclear Information System (INIS)

Chen Yongqing; Yin Guowei; Chai Songshan; Deng Zhaoping; Zhou Bin

1993-09-01

The two-channel neutron boron meter is a continuous on-line measuring device to measure boron concentration of primary cooling liquid of reactors. The neutron-leakage-compensation method is taken in the measuring mechanism. In the primary measuring configuration, the mini-boron-water annulus and two-channel and central calibration loop are adopted. The calibration ring and constant-temperature of boron-water can be remotely controlled by secondary instruments. With the microcomputer data processing system the boron concentration is automatically measured and calibrated in on-line mode. The meter has many advantages such as high accuracy, fast response, multi-applications, high reliability and convenience

Lattice vibrations in α-boron

International Nuclear Information System (INIS)

Richter, W.

1976-01-01

α-rhombohedral boron is the simplest boron modification, with only 12 atoms per unit cell. The boron atoms are arranged in B 12 icosahedra, which are centered at the lattice points of a primitive rhombohedral lattice. The icosahedra are slightly deformed, as the five-fold symmetry of the ideal icosahedron is incompatible with any crystal structure. The lattice dynamics of α-boron are discussed in terms of the model developed by Weber and Thorpe. (Auth.)

Boron Fullerenes: A First-Principles Study

Directory of Open Access Journals (Sweden)

Gonzalez Szwacki Nevill

2007-01-01

Full Text Available AbstractA family of unusually stable boron cages was identified and examined using first-principles local-density functional method. The structure of the fullerenes is similar to that of the B12icosahedron and consists of six crossing double-rings. The energetically most stable fullerene is made up of 180 boron atoms. A connection between the fullerene family and its precursors, boron sheets, is made. We show that the most stable boron sheets are not necessarily precursors of very stable boron cages. Our finding is a step forward in the understanding of the structure of the recently produced boron nanotubes.

Boron-containing thioureas for neutron capture therapy

International Nuclear Information System (INIS)

Ketz, H.

1993-01-01

Melanin is produced in large amounts in malignant melanotic melanomas. Because thiourea compounds are covalently incorporated into melanin during its biosynthesis, the preparation of boronated thiourea-derivatives is of particular interest for the BNCT (Boron Neutron Capture Therapy). Accumulation of boron in tumors by means of boronated thiourea-derivatives may therefore provide levels of 10 B which are useful for BNCT. In BNCT the tumor containing the boron compound is irradiated with epithermal neutrons to generate He- and Li-nuclei from the 10 B which can then destroy the tumor cells. Because of the short ranges of these particles (approximately one cell diameter) the damage will be almost exclusively confined to the tumor leaving normal tissue unharmed. High accumulation of 2-mercapto-1-methylimidazole (methimazole) in melanotic melanomas has been described in the literature. Boronated derivatives of methimazole were therefore synthesized. Boron was in the form of a boronic acid, a nido-carbonate and a mercaptoundeca hydro-closo-dodecaborate (BSH). The synthesis of the boron cluster derivatives of methimazole (nido-carborate- and BSH-derivatives) with 9 resp. 12 boron atoms in the molecule were expected to achieve higher concentrations of boron in the tumor than in the case of the boronic acid compound with its single boron atom. (orig.) [de

PENGARUH GOOD CORPORATE GOVERNANCE, CSR, DAN UKURAN PERUSAHAAN TERHADAP KINERJA PERUSAHAAN

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Mela Wati

2016-04-01

Full Text Available Tujuan dari penelitian ini adalah untuk menguji pengaruh Good Corporate Governance, Corporate Social Responsibility, dan ukuran perusahaan terhadap kinerja perusahaan. Populasi dalam penelitian ini adalah perusahaan manufaktur yang listing di BEI tahun 2012-2014. Pengambilan sampel menggunakan metode purposive sampling sebanyak 21 perusahaan manufaktur sektor industri dasar dan kimia tahun 2012-2014. Variabel yang digunakan adalah dewan direksi, dewan komisaris, Corporate Social Responsibility, dan ukuran perusahaan sebagai variabel independen, sedangkan kinerja keuangan perusahaan sebagai variabel dependen. Alat analisis yang digunakan adalah analisis regresi berganda untuk menguji pengaruh variabel independen terhadap variabel dependen. Hasil penelitian menunjukkan bahwa ukuran dewan direksi, ukuran komisaris dan Corporate Social Responsibility tidak berpengaruh terhadap kinerja perusahaan, hanya ukuran perusahaan yang berpengaruh terhadap kinerja perusahaan

SIKAP KONSUMEN TERHADAP BERAS ORGANIK

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Northa Idaman

2014-04-01

Full Text Available ABSTRACTThe purpose of this study were (1 to analyze the product attributes which considered necessary by the consumers of organic rice in Sukabumi Region, (2 to analyze the contribution of attitude toward behavior, subjective norms, and perceived behavioural control toward the intention to buy organic rice in Sukabumi Region, and (3 to formulate the managerial implication to improve the intention to buy organic rice in Kabupaten Sukabumi. The analyzed data on the 151 respondents were collected from four sub-districts in Sukabumi using convenience-sampling method. While analysis used were descriptive, cochran, and structural  equation  modelling. The result show that there were three attributes which were necessitated by the consumers in Sukabumi Region in buying organic rice, and there were big contributions from two constructs in forming the intention to buy organic rice in Sukabumi Region. Keywords: organic rice, consumer attittude, theory of planned behavior, structural equation modelling (SEMABSTRAKTujuan penelitian ini adalah (1 menganalisis atribut-atribut produk yang dipentingkan oleh konsumen terhadap beras organik di Kabupaten Sukabumi. (2 menganalisis kontribusi sikap terhadap perilaku pembelian beras organik (attitude toward behavior, norma subjektif (subjective norms, dan kontrol perilaku (perceived behavioral control terhadap minat (intention membeli beras organik di Kabupaten Sukabumi, (3 merumuskan implikasi manajerial yang dapat diambil dari hasil penelitian untuk meningkatkan minat membeli beras organik di Kabupaten Sukabumi. Analisis data dilakukan terhadap 151 responden yang dikumpulkan dari empat kecamatan di Kabupaten Sukabumi menggunakan metode convenience-sampling. Analisis yang digunakan adalah deskriptif, Cochran dan structural  equation  modelling.  Hasil penelitian menunjukkan bahwa terdapat tiga atribut yang dipentingkan oleh konsumen di Kabupaten Sukabumi dalam membeli beras organik, serta kontribusi yang besar

Pengaruh Green Marketing Hotel Terhadap Green Consumer Behavior

OpenAIRE

Yo Fernandez, Eunike Christe; Tjoanda, Evelyn

2017-01-01

Penelitian ini dilakukan untuk mengetahui pengaruh dari green marketing hotel terhadap green consumer behavior. Green marketing memiliki 3 dimensi, yaitu green product, green price, dan green promotion. Penelitian ini melibatkan 272 responden masyarakat Surabaya dan menggunakan metode regresi linear berganda. Hasil penelitian menunjukkan bahwa green product dan green price berpengaruh secara positif dan signifikan sedangkan green promotion berpengaruh namun tidak signifikan terhadap green con...

Pendidikan Gizi dengan Media Booklet terhadap Pengetahuan Gizi

OpenAIRE

Zulaekah, Siti

2012-01-01

Pendidikan gizi pada anak anemia di sekolah dasar diberikan dengan harapan pengetahuan gizi dan pola makan anak akan berubah sehingga asupan makan terutama asupan besi dan kadar hemoglobin anak akan meningkat. Masalah penelitian adalah bagaimanakah efek pendidikan gizi terhadap Perubahan pengetahuan gizi. Penelitian ini bertujuan mempelajari efek pendidikan gizi terhadap Perubahan pengetahuan gizi anak sekolah dasar yang anemia. Penelitian ini merupakan penelitian quasy experiment dengan ranc...

PENGARUH BACKGROUND MAHASISWA TERHADAP KINERJA AKADEMIK

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Trianasari Angkawijaya

2014-09-01

Full Text Available Abstract: The Effect of Students’ Background on Academic Performance. This study examines the effect of background variables on the academic performance of accounting students in a private university in Surabaya. The background variables under study included previous academic performance, prior knowledge on accounting, sex, motivation, preparedness, and expectations. The results show that previous academic performance, motivation, and expectations have positive and significant effects on the students’ overall academic performance in accounting, while preparedness affects only the students’ performance in management accounting. In contrast, prior knowledge on accounting and sex do not give significant impacts to the students’ overall academic performance.These findings indicate the importance of previous aca­demic performance as well as motivation and expectations as background variables in current academic performance. Keywords: students’ background, academic performance, accounting Abstrak: Pengaruh Background Mahasiswa terhadap Kinerja Akademik. Penelitian ini mengkaji pengaruh variabel background terhadap kinerja akademik mahasiswa akuntansi di Universitas Surabaya. Lima variabel background utama dipergunakan, yaitu kinerja akademik sebelumnya, pengetahuan akun­tansi sebelumnya, jenis kelamin, motivasi, kesiapan, dan ekspektasi. Hipotesis diuji menggunakan model regresi linier berganda OLS dan Robust Standar Error. Hasil penelitian memerlihatkan bahwa kinerja akademik sebelumnya, motivasi, dan ekspektasi memiliki pengaruh positif signifikan terhadap kinerja akademik keseluruhan, sementara kesiapan memberikan pengaruh positif hanya pada kinerja akademik akuntansi manajemen. Sebaliknya, pengetahuan akuntansi sebelumnya dan jenis kelamin tidak memberi­kan pengaruh signifikan terhadap kinerja akademik keseluruhan. Temuan ini mengindikasikan bahwa kinerja akademik sebelumnya beserta motivasi dan ekspektasi adalah variabel background

Boron supplementation in broiler diets

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EJ Fassani

2004-12-01

Full Text Available Boron supplementation in broiler feed is not a routine practice. However, some reports suggest a positive effect of boron on performance. This study assessed the effects of boron supplementation on broiler performance. Diets were based on maize and soybean meal, using boric acid P.A. as boron source. Six supplementation levels (0, 30, 60, 90, 120 and 150 ppm were evaluated using 1,440 one-day old males housed at a density of 30 chickens in each of 48 experimental plots of 3m². A completely randomized block design was used with 8 replicates. Feed intake, weight gain and feed conversion were assessed in the periods from 1 to 7 days, 1 to 21 days and 1 to 42 days of age, and viability was evaluated for the total 42-day rearing period. No performance variable was affected by boron supplementation (p>0.05 in the period from 1 to 7 days. The regression analysis indicated an ideal level of 37.4 ppm of boron for weight gain from 1 to 21 days (p0.05, although feed intake was reduced linearly with increased boron levels (p0.05. Ash and calcium percentages in the tibias of broilers and viability in the total rearing period were not affected by boron supplementation (p>0.05.

PENGARUH INTELLECTUAL CAPITAL TERHADAP KINERJA KEUANGAN PERUSAHAAN (STUDI EMPIRIS PERUSAHAAN LQ 45

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Indah Fajarini S.W.

2012-03-01

Full Text Available Tujuan penelitian ini adalah untuk mengetahui pengaruh intelectual capital terhadap kinerja keuangan perusahaan, kinerja keuangan perusahaan masa akan datang dan rata-rata pertumbuhan intelectual capital terhadap kinerja keuangan perusahaan masa akan datang. Penentuan sampel dilakukan secara purposive sampling dan diperoleh sampel sebanyak 18 perusahaan. Hasil penelitian menunjukkan bahwa terdapat pengaruh signifikan antara IC (VAICTM terhadap kinerja keuangan perusahaan, terdapat pengaruh IC (VAICTM terhadap kinerja keuangan masa depan perusahaan dan terdapat pengaruh ROGIC terhadap kinerja keuangan masa depan perusahaan, baik untuk periode ROGIC 2006-2007 terhadap kinerja keuangan 2006 maupun ROGIC 2006-2007 terhadap kinerja keuangan 2007. Abstract The objective of study investigates the effects of intellectual capital to corporate financial performance, financial performance and the growth average of intellectual capital  to the company’s future financial performance. In ditermining the sample,  purposive sampling method is employed and 18 companies are obtained. The results show that there is IC (VAICTM influence to the company’s financial performance, there is influence of IC (VAICTM to the company’s future financial performance and there is ROGIC influence to the company’s future financial performance. Those are for both  the ROGIC period of 2006-2007 to financial performance of  2006 and the ROGIC period of 2006-2007 to the financial performance of 2007.

PENILAIAN PEDOFILIA MENGGUNAKAN RESPON HEMODINAMIK OTAK TERHADAP STIMULI SEKSUAL

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Kuhelan Mahendran

2015-09-01

Full Text Available ABSTRAK Menilai secara akurat orientasi seksual seseorang sangat penting dalam melakukan penanganan terhadap pelaku kekerasan seksual pada anak. Phallometry adalah metode standar untuk mengidentifikasi orientasi seksual; tetapi, metode ini telah banyak dikritik oleh karena bersifat intrusif dan reliabilitasnya terbatas. Tujuan:Untuk mengevaluasi apakah pola respon spasial terhadap stimuli seksual yang ditandai oleh adanya perubahan blood oxygen level-dependent signal (BOLDmemfasilitasi proses identifikasi pedofilia. Desain:Selama dilakukan pemeriksaan magnetic resonance imaging fungsional (fMRI, ditampilkan gambar anak-anak dan dewasa tanpa busana dengan jenis kelamin sama atau berbeda terhadap sampel penelitian (kelompok pedofil dan kontrol. Kami mengkalkulasi perbedaan BOLDterhadap stimuli sexual anak-anak dan dewasa pada setiap sampel. Hasil foto dengan kontras kemudian dimasukkan sesuai dengan kelompoknya untuk dianalisis perbedaan pemetaan otak antara kelompok pedofil dan kontrol. Kami mengkalkulasi nilai ekspresi yang sesuai dengan hasil kelompok bagi setiap sampel. Nilai ekspresi tersebut dibedakan menjadi 2 algoritma klasifikasi: analisis Fisher linear discriminant dan analisis -nearest neighbor. Prosedur klasifikasi tersebut telah divalidasi silang menggunakan metode leave-one-out. Lokasi:Bagian Kedokteran Seksual, Fakultas Kedokteran Universitas Christian Albrechts di Kiel, Jerman. Sampel:Kami merekrut 24 sampel dengan pedofil yang memiliki ketertarikan seksual terhadap anak perempuan (n=11 atau laki-laki (n=13 pre pubertas dan 32 kontrol laki-laki sehat yang memiliki ketertarikan seksual terhadap wanita (n=18 atau pria (n=14 dewasa. Pengukuran luaran utama:Angka sensitivitasdan spesifisitas dari kedua algoritme klasifikasi. Hasil:Akurasi klasifikasi tertinggi dicapai dengan analisis diskriminan linear Fisher, yang menunjukkan akurasi rata-rata 95% (100% spesifisitas, 88% sensitivitas. Simpulan:Pola respon otak fungsional terhadap

PENGARUH KONFLIK PERAN (ROLE CONFLICT TERHADAP KEPUASAN KERJA PERAWAT SERTA KOMITMEN PADA ORGANISASI

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Madziatul Churiyah

2007-01-01

Full Text Available Dalam sebuah organisasi rumah sakit, perawat merupakan komponen penting dan sangat berpengaruh terhadap berhasil tidaknya organisasi karena menjadi bagian kunci dengan tanggung jawab tinggi, di samping tenaga medis. Perawat sangat rentan terhadap stress pekerjaan, khususnya pada peran mereka. Selain mengurus pasien yang suka menuntut, mereka juga berhadapan dengan dokter yang stres. Dua penyebab stres tersebut sering menjadi alasan mengapa perawat seringkali merasa kelebihan beban kerja, ataupun merasa kurang dihargai. Penelitian ini mengkaji lebih dalam mengenai keterkaitan antara konflik peran, kepuasan kerja perawat dan komitmen pada organisasi. Populasi  sekaligus sampel sebanyak 64 orang. Proses analisis menggunakan Analisis Statistik Deskriptif dan Analisis Statistik Inferential yaitu Analisis Jalur (Path Analysis .Hasil penelitian ini adalah konflik peran terhadap kepuasan kerja perawat berpengaruh signifikan sebesar   0,430; konflik peran berpengaruh signifikan secara langsung terhadap komitmen pada organisasi sebasar 0,164 ; konflik peran berpengaruh signifikan secara tidak  langsung terhadap komitmen pada organisasi sebasar 0,353; kepuasan kerja perawat berpengaruh signifikan langsung terhadap komitmen pada organisasi dengan koefisien path sebesar 0,821.

Persepsi Siswa Terhadap Pembelajaran Guru Pendidikan Jasmani Di SMA Muhammadiyah Kediri

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Hendra Mashuri

2017-05-01

Full Text Available Tujuan yang ingin dicapai dalam penelitian ini adalah untuk memperoleh informasi tentang persepsi siswa terhadap pembelajaran guru pendidikan jasmani di SMA Muhammadiyah Kediri. Rumusan masalah dalam penelitian ini adalah bagaimana persepsi siswa terhadap pembelajaran guru pendidikan jasmani di SMA Muhammadiyah Kediri? Jenis penelitian ini adalah penelitian survei. Populasi yang digunakan adalah seluruh siswa SMA Muhammadiyah Kediri, sampel yang diambil berjumlah 60 siswa yang terdiri dari 20 siswa dari masing-masing kelas. Instrumen yang digunakan adalah angket dan dokumentasi. Teknik analisis data menggunakan persentase. Hasil penelitian menunjukkan bahwa persepsi siswa terhadap proses pembelajaran SMA Muhammadiyah Kediri mendapatkan skor 3115 atau rata-rata jawaban siswa 51,917 dengan persentase sebesar 74% dan masuk dalam kategori “Baik”. Dengan demikian dapat dikatakan bahwa persepsi siswa terhadap pembelajaran guru pendidikan jasmani adalah baik.

Pengaruh Pendekatan MEAs terhadap Kemampuan Pemecahan Masalah, Komunikasi Matematis, dan Kepercayaan Diri Siswa

OpenAIRE

Palupi Sri Wijayanti

2013-01-01

Penelitian ini bertujuan untuk mendeskripsikan pengaruh: (1) peringkat sekolah terhadap kemampuan pemecahan masalah siswa, komunikasi matematis, dan kepercayaan diri siswa; (2) pendekatan pembelajaran terhadap kemampuan pemecahan masalah siswa, komunikasi matematis, dan kepercayaan diri siswa; (3) interaksi peringkat sekolah dan pendekatan pembelajaran terhadap kemampuan pemecahan masalah siswa, komunikasi matematis, dan kepercayaan diri siswa. Hasil penelitian menunjukkan bahwa sebagai berik...

PENGARUH MODAL INTELEKTUAL DAN KEPUASAN KERJA TERHADAP KINERJA PEGAWAI SERTA DAMPAKNYA TERHADAP LOYALITAS PEGAWAI CUSTOMER SERVICES HOTEL BERBINTANG EMPAT DI KOTA BANDUNG

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Donni Juni Priansa

2016-03-01

Berdasarkan hasil penelitian , dapat disimpulkan bahwa modal intelektual dan kepuasan kerja berpengaruh positif dan signifikan terhadap kinerja pegawai; serta modal intelektual, kepuasan kerja, dan kinerja pegawai berpengaruh positif dan signifikan terhadap loyalitas pegawai hotel berbintang empat di Kota Bandung. Dengan demikian, maka modal intelektual, kepuasan kerja, dan kinerja pegawai perlu dioptimalkan. Kata Kunci: Modal Intelektual Kepuasan Kerja, Kinerja Pegawai, dan Loyalitas Pegawai

Nuclear magnetic resonance spectroscopy of boron compounds containing two-, three- and four-coordinate boron

International Nuclear Information System (INIS)

Wrackmeyer, B.

1988-01-01

The influence of boron chemistry on various areas of research in inorganic, organic and theoretical chemistry is well documented. In fact, many models presently employed to describe chemical bonding in general can be traced to attempts to understand bonding in boranes. The confirmation of many theoretical predictions in boron chemistry relies on direct and indirect structural information provided by various physical methods that - fortunately - became available almost at the same rate as that with which the interest in boron compounds was growing. Clearly, there has always been a strong link between the interest in synthesis and the application of physical methods. As in many other areas of chemistry, developments in boron chemistry have been greatly accelerated by NMR. 11 B NMR has been at the center of interest from the beginning, accompanied by routine 1 H NMR measurements, and occasional 14 N, 19 F and 31 P NMR work. In the last 12 years, we have seen an increasing number of 13 C NMR studies of boron compounds. The availability of multinuclear facilities for PFT NMR spectrometers stimulates the measurement of the NMR spectra of other nuclei, like 29 Si, 119 Sn or other metals, in order to obtain additional information. This paper is intended to serve several purposes: to update previous reviews on 11 B NMR of boron compounds, to demonstrate some applications of multinuclear NMR to boron chemistry; to attempt to incorporate new NMR parameters into the known data set; and to summarize the experimental facts required for obtaining the maximum information from NMR studies on boron compounds

APLIKASI SERBUK WORTEL SEBAGAI SUMBER β-KAROTEN ALAMI PADA PRODUK MI INSTAN

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Sri Anna Marliyati

2013-10-01

merupakan formula terbaik. Tidak ada perbedaan yang nyata dalam penerimaan antara mi instan formula ini dengan mi instan komersial. Produk mi instan ini mengandung air sebesar 7.75% (bb, abu 1.59% (bk, protein 12.82% (bk, lemak 1.41% (bk, karbohidrat 84.18% (bk dan karoten 2 390 μg/100 g (199 RE atau 99.5 RAE/takaran saji. Mi instan wortel mempunyai sifat-sifat fisik seperti waktu masak 3.5 menit, warna kuning kemerahan, elastisitas 162.22%, dan daya serap air 143.89%. Mi ini berkontribusi sebesar 15% terhadap Angka Kecukupan Gizi vitamin A untuk anak usia 4—5 tahun.Kata kunci: β-karoten, mi instan, serbuk wortel

Pembuatan Formulasi Krim Anti Nyamuk dari Fraksi Minyak Sereh

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Sri Pudji Rahayu

2010-10-01

Full Text Available Minyak sereh dan fraksinya merupakan minyak atsiri yang mempunyai banyak kegunaan, diantaranya sebagai repellent atau pengusir nyamuk yang merupakan vektor berbagai penyakit seperti demam berdarah dengue (DBD. Saat ini formula pengusir nyamuk menggunakan bahan kimia DEET (n,n-diethyl-m-toluamide yang mempunyai efek samping terhadap kulit manusia, karena itu minyak sereh ini merupakan alternatif bahan aktif pengusir nyamuk yang perlu dikembangkan. Telah dilakukan penelitian pembuatan formulasi krim anti nyamuk dengan menggunakan fraksi minyak sereh dalam bentuk sediaan krim. Formulasi krim dibuat dengan variabel konsentrasi bahan aktif fraksi sereh dari 0,1%; 0,2%; 0,3%; 0,4%; 0,6% dan penambahan bahan pewangi serta penambahan NaOH dan KOH. Selanjutnya dilakukan analisis sifat fisiko kimia meliputi pH, kestabilan dan homogenitas krim serta pengujian efektifitas dari formulasi krim terhadap gigitan nyamuk dan uji iritasi terhadap kulit. Formula yang dihasilkan berwarna putih, mempunyai bau/wangi segar yang khas, rasa hangat pada kulit, pH normal sekitar 7, kestabilan baik dan homogen. Uji efektivitas terhadap populasi nyamuk Aedes aegypti di laboratorium menunjukkan bahwa Formulasi VI dengan konsentrasi bahan aktif 0,6% memberikan hasil yang terbaik dalam perlindungan terhadap gigitan nyamuk sampai lebih 6 jam, diikuti dengan Formulasi III (0,2% bahan aktif dengan perlindungan sampai 5 jam, Formulasi IV (0,3% bahan aktif dan formulasi V (0,4% bahan aktif dengan perlindungan sampai 4 jam, dan Formulasi I (0,1% bahan aktif yang memberikan perlindungan hanya sampai 3 jam. Akan tetapi secara ekonomi Formula III merupakan yang terbaik yaitu dengan konsentrasi bahan aktif 0,2 %berat atau 0,09% citronellal juga sudah dapat memberikan perlindungan terhadap gigitan nyamuk sampai 5 jam hingga 6 jam. Sedangkan Formulasi VII dengan penambahan bahan pelembab/pewangi jojoba dan Formulasi II dengan penambahan NaOH dan KOH untuk memperbaiki penampilan sediaan

Cell cycle dependence of boron uptake in various boron compounds used for neutron capture therapy

International Nuclear Information System (INIS)

Yoshida, F.; Matsumura, A.; Shibata, Y.; Yamamoto, T.; Nose, T.; Okumura, M.

2000-01-01

In neutron capture therapy, it is important that the tumor take boron in selectively. Furthermore, it is ideal when the uptake is equal in each tumor cell. Some indirect proof of differences in boron uptake among neoplastic cell cycles has been documented. However, no investigation has yet measured boron uptake directly. Using flow cytometry, in the present study cells were sorted by G0/G1 phase and G2/M phase, and the boron concentration of each fraction was measured with inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The results were that BSH (sodiumborocaptate) and BPA (p-boronophenylalanine) had higher rates of boron uptake in the G2/M group than in the G0/G1 group. However, in BPA the difference was more prominent, which revealed a 2.2-3.3 times higher uptake of boron in the G2/M group than in the G0/G1 group. (author)

PENGARUH KARAKTERISTIK PERSONAL TERHADAP ETNOSENTRISME KONSUMEN PADA PRODUK DOMESTIK

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Ramadania Ramadania

2015-11-01

Full Text Available AbstractThe purpose of this study is to examine the personal characteristics of the social-psychological antecedents consisting of cultural openness, patriotism, conservatism and collectivism on consumer ethnocentrism (CE. The survey was conducted on 202 consumers in West Kalimantan, Indonesia. The results showed that the cultural openness has a negative effect on CE. This study also provides evidence that collectivism showed a significant positive influence on CE. While, patriotism and conservatism do not have a significant effect on CE. This study implies that openness of foreign culture can undermine CE. However, CE can be improved by keeping the values of collectivism. This research shows that consumers tend to be rational. Therefore patriotism and conservatism are not transferred to the CE pattern.Keywords: Cultural openness, patriotism, conservatism, collectivism, consumer ethnocentrismAbstrakTujuan penelitian ini adalah untuk menguji pengaruh karakteristik personal dari anteseden psikologi sosial yang terdiri dari keterbukaan budaya, patriotisme, konservatisme, dan kolektivisme terhadap etnosentrisme konsumen (CE. Survei dilakukan terhadap 202 konsumen di Kalimantan Barat, Indonesia. Hasil penelitian menunjukkan bahwa keterbukaan budaya memiliki pengaruh negatif yang signifikan terhadap CE. Penelitian ini juga menemukan bahwa kolektivisme memiliki pengaruh positif yang signifikan terhadap CE. Penelitian ini mengimplikasikan bahwa keterbukaan terhadap budaya asing dapat memperlemah CE. Namun demikian CE dapat ditingkatkan dengan menjaga nilai-nilai kolektivisme. Peneliitian ini menunjukkan bahwa konsumen cenderung rasional. Olehkarenanya patriotisme dan konservatisme tidak di transfer kedalam pola CE.Kata Kunci: Keterbukaan budaya, patriotisme, koservatisme, kolektivisme, etnosentrisme konsumen.

Pengaruh Intensitas Mengakses Twitter Duta Im3 terhadap Kepuasan Pengalaman Adopsi dan Kepuasan Pengalaman Adopsi terhadap Keputusan Penggunaan Program Im3

OpenAIRE

Ayu Kinasih, Diyan Hafdinovianti; Pradekso, Tandiyo; Setiabudi, Djoko

2014-01-01

Nama : Diyan H Ayu KinasihNIM : D2C009029Judul : Pengaruh Intensitas Mengakses Twitter Duta IM3 terhadapKepuasan Pengalaman Adopsi dan Kepuasan PengalamanAdopsi terhadap Keputusan Penggunaan Program IM3ABSTRAKTwitter sebagai salah satu promotion tools yang digunakan oleh PTIndosat Tbk, diharapkan dapat memperkenalkan program-program serta eventyang dilakukan oleh Indosat. Melalui duta IM3 sebagai brand ambassador, Indosatmencoba meraih pasar anak muda dengan melakukan kegiatan promosi.Tipe pe...

ANALISIS PENGARUH HARGA MINYAK DUNIA DAN FED FUNDS RATE TERHADAP INFLASI INDONESIA

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Masadi Masadi

2017-06-01

Full Text Available Perubahan pola siklus ekonomi global dapat mempengaruhi inflasi Indonesia melalui jalur perdagangan dan melalui jalur pasar keuangan, seperti harga minyak dunia dan Fed Funds Rate. Penelitian ini bertujuan untuk menganalisis pengaruh langsung maupun tidak langsung yang disebabkan perubahan harga minyak dunia dan Fed Funds Rate terhadap volatilitas inflasi Indonesia. Alat analisis yang digunakan dalam penelitian ini adalah dengan menggunakan analisis jalur. Hasil penelitian menunjukan bahwa terdapat pengaruh langsung dan signifikan variabel harga minyak dunia terhadap inflasi, terdapat pengaruh langsung dan signifikan variabel Fed Funds Rate terhadap inflasi, terdapat pengaruh langsung dan signifikan variabel BI rate terhadap inflasi, variabel jumlah uang beredar tidak berpengaruh secara langsung dan tidak signifikan terhadap inflasi Indonesia, terdapat pengaruh langsung dan signifikan variabel harga minyak dunia dan Fed Funds Rate terhadap jumlah uang beredar, terdapat pengaruh langsung dan signifikan variabel Fed Funds Rate terhadap jumlah uang beredar, terdapat pengaruh langsung dan signifikan variabel harga minyak dunia terhadap BI rate, terdapat pengaruh langsung dan signifikan variabel Fed Funds Rate terhadap BI rate. Adapun pengaruh tidak langsung hanya variabel Fed Funds Rate dengan variabel intervening BI rate yang berpengaruh signifikan terhadap inflasi. Changing patterns of global economic cycles may affect inflation Indonesia through trade and financial markets, such as oil prices and Fed Funds Rate. This study aimed to analyze the effect directly or indirectly caused changes in world oil prices and the Fed Funds Rate to the volatility of inflation in Indonesia. The analytical tool used in this research is by using path analysis. The results showed that there are significant direct and signifian variables in world oil prices n inflation, there is a direct influence and signifian variables Fed Funds Rate on inflation, there is a direct

Boron-Loaded Silicone Rubber Scintillators

Energy Technology Data Exchange (ETDEWEB)

Bell, Z.W.; Maya, L.; Brown, G.M.; Sloop, F.V.Jr

2003-05-12

Silicone rubber received attention as an alternative to polyvinyltoluene in applications in which the scintillator is exposed to high doses because of the increased resistance of the rubber to the formation of blue-absorbing color centers. Work by Bowen, et al., and Harmon, et al., demonstrated their properties under gamma/x-ray irradiation, and Bell, et al. have shown their response to thermal neutrons. This last work, however, provided an example of a silicone in which both the boron and the scintillator were contained in the rubber as solutes, a formulation which led to the precipitation of solids and sublimation of the boron component. In the present work we describe a scintillator in which the boron is chemically bonded to the siloxane and so avoids the problem of precipitation and loss of boron to sublimation. Material containing up to 18% boron, by weight, was prepared, mounted on photomultipliers, and exposed to both neutron and gamma fluxes. Pulse height spectra showing the neutron and photon response were obtained, and although the light output was found to be much poorer than from samples in which boron was dissolved, the higher boron concentrations enabled essentially 100% neutron absorption in only a few millimeters' thickness of rubber.

KEPUASAN PELAKU USAHA TERHADAP KUALITAS LAYANAN PERIZINAN PUPUK DI KEMENTERIAN PERTANIAN

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Hasim Ashari

2014-09-01

Full Text Available ABSTRACTThe objectives of this study were: 1 analyze level of satisfaction index, 2 analyze factors that influence the satisfaction of fertilizer license services at the Ministry of Agriculture, 3 analyze the impact of satisfaction that influence recommendation. Data obtained from 86 respondents who were making license at the Pusat Perlindungan Varietas Tanaman dan Perizinan Pertanian (PPVTPP and Direktorat Jenderal Prasarana dan Sarana Pertanian (Ditjen PSP. The data were processed using Microsoft Office Excel to perform a descriptive cross tabulation analysis for each variable, while the analysis of the direct impact of service satisfaction variable to the recommendation used Path Analysis with LISREL 8.30 program. The conclusion of this study is the reliability and empathy shows direct significant influence to satisfaction but directly all variables are insignificant to recommendation. Indirectly, the variables of tangibility, reliability and responsiveness have significant influence to recommendation.Keywords: servqual model, fertilizer permit service, path analysis, fertilizerABSTRAKTujuan dai penelitian adalah 1 menganlisis tingkat kepuasn, 2 menganalilis faktor-faktor yang mempengaruhi kepuasan terhadap pelayanan perizinan pupuk di Kementerian Pertanian, 3 menganalisis pengaruh kepuasan terhadap pemberian rekomendasi. Pengambilan data terdiri dari 86 responden yang sedang mengurus perizinan di Pusat Perlindungan Varietas Tanaman dan Perizinan Pertanian (PPVTPP dan Direktorat Jenderal Prasarana dan Sarana Pertanian (Ditjen PSP. Pengolahan data dengan menggunakan Mocrosoft Office Excel untuk menghitung analisis tabulasi silang pada setiap variabel, dan untuk mengetahui pengaruh kepuasan terhadap pemberian rekomendasi menggunakan analisis jalur (path analysis yang menggunakan program Lisrel 8.30. Kesimpulan pada penelitian ini adalah secara langsung variabel keandalan (reliability dan empati (empathy berpengaruh siknifikan terhadap terhadap

Pengaruh Struktur Organisasi dan Ukuran Perusahaan Terhadap Penerapan Business Entity Concept

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Widya Exsa Marita

2015-10-01

Full Text Available Masalah pengelolaan dana merupakan momok yang sering mengakibatkan kegagalan usaha pada suatu perusahaan terutama UMKM. Pengelolaan dana yang efektif dan efisien dapat tercapai jika suatu perusahaan mampu menerapkan akuntansi yang baik. Penerapan akuntansi yang baik haruslah diawali dengan penerapan konsep akuntansi, salah satunya yaitu business entity concept. Penelitian ini bertujuan untuk mengetahui adanya pengaruh struktur organisasi dan ukuran perusahaan terhadap penerapan business entity concept. Objek penelitian yang diambil adalah UD. Agung Mulia Jaya dengan sampel sebanyak 200 reponden yang diambil dengan menggunakan teknik simple random sampling. Variabel bebas dalam penelitian ini adalah struktur organisasi dan ukuran perusahaan, sedangkan variabel terikatnya adalah penerapan business entity concept. Untuk menguji adanya pengaruh struktur organisasi dan ukuran perusahaan terhadap penerapan business entity concept, maka dilakukan analisis regresi linier berganda. Hasil pengujian secara simultan menunjukkan bahwa kedua variabel bebas yaitu struktur organisasi dan ukuran perusahaan berpengaruh terhadap penerapan business entity concept. Secara parsial, struktur organisasi berpengaruh positif terhadap penerapan business entity concept, namun sebaliknya ukuran perusahaan berpengaruh negatif terhadap penerapan business entity concept. Koefisien determinasi menghasilkan nilai 67,4% yang berarti penerapan business entity concept dapat dijelaskan oleh variabel struktur organisasi dan ukuran perusahaan sebesar 67,4% atau bersifat kuat.

ANALISIS PENGARUH MODAL INTELEKTUAL TERHADAP KINERJA KEUANGAN PERUSAHAAN MANUFAKTUR DI INDONESIA

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Niswah Baroroh

2014-07-01

Full Text Available Tujuan penelitian ini adalah untuk menganalisis pengaruh modal intelektual terhadap kinerja keuangan perusahaan saat ini dan masa yang akan datang serta pengaruh pertumbuhan modal intelektual terhadap kinerja keuangan di masa yang akan datang. Penentuan sampel menggunakan metode purposive sampling dengan menghasilkan 57 perusahaan. Penelitian ini menggunakan analisis Partial Least Square (PLS untuk menguji pengaruh modal intelektual terhadap kinerja perusahaan. Hasil penelitian menunjukkan modal intelektual berpengaruh positif signifikan terhadap kinerja perusahaan saat ini dan di masa yang akan datang serta rata-rata pertumbuhan modal intelektual berpengaruh positif signifikan terhadap kinerja perusahaan di masa yang akan datang. The objectives of this study to analyze the effects of intellectual capital to corporate financial performance and future performance and analyze the growth average of intellectual capital to the company’s future financial performance. In determining the sample, purposive sampling is employed with 57 companies. Partial Least Square (PLS used to analyze these effects. The results show that there is a positive significant effect of intellectual capital to financial performance and future financial performance and there is a positive significant of growth average of intellectual capital to the future financial performance of the companies

A system to deposit boron films (boronization) in the DIII-D tokamak

International Nuclear Information System (INIS)

Hodapp, T.R.; Jackson, G.L.; Phillips, J.; Holtrop, K.L.; Peterson, P.L.; Winters, J.

1992-01-01

A system has been added to the DIII-D tokamak to coat its plasma facing surfaces with a film of boron using diborane gas. The system includes special health and safety equipment for handling the diborane gas which is toxic and inflammable. The purpose f the boron film is to reduce the levels of impurity atoms in the DIII-D plasmas. Experiments following the application of the boron film in DIII-D have led to significant reductions in plasma impurity levels and the observation of a new, very high confinement regime

PENGARUH KEPEMIMPINAN KEPALA SEKOLAH DAN KOMUNIKASI INTERNAL TERHADAP EFEKTIVITAS KERJA GURU SMK PGRI WONOASRI

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Ajeng Marga Kusuma

2017-04-01

Hasil penelitian menunjukkan 1 ada pengaruh secara parsial kepemimpinan Kepala Sekolah terhadap Efektivitas Kerja Guru SMK PGRI Wonoasri, 2 ada pengaruh secara parsial  komunikasi internal terhadap Efektivitas Kerja Guru SMK PGRI Wonoasri, 3 Ada Pengaruh secara simultan kepemimpinan Kepala Sekolah dan komunikasi internal terhadap efektivitas kerja guru SMK PGRI Wonoasri

PENGARUH PERSEPSI KEPEMIMPINAN TRANSFORMASIONAL DAN BUDAYA ORGANISASI TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOR

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Endang Haryati

2017-08-01

Full Text Available Penelitian ini bertujuan untuk mengetahui pengaruh kepemimpinan transformasional dan budaya organisasi terhadap organizational citizenship behavior. Penelitian ini menggunakan metode deskriptif kuantitatif. Populasi penelitian adalah karyawan Politeknik LP3i Medan dengan masa kerja lebih dari dua tahun yang kemudian diketahui berjumlah 53 orang. Teknik pengambilan sampel adalah total sampling dikarenakan jumlah populasi yang tidak terlalu banyak. Data penelitian dikumpulkan dengan menggunakan skala persepsi kepemimpinan transformasional, skala budaya organisasi, observasi dan dokumentasi untuk menilai budaya organisasi, dan skala organizational citizenship behavior. Analisis regresi linier berganda digunakan untuk menguji hipotesis penelitian.Analisa data menunjukkan adanya pengaruh yang positif dan signifikan antara persepsi kepemimpinan transformasional dan budaya organisasi terhadap organizational citizenship behavior, adanya pengaruh yang positif dan signifikan antara persepsi kepemimpinan transformasional terhadap organizational citizenship behavior, sertaadanya pengaruh yang positif dan signifikan dari budaya organisasi terhadap organizational citizenship behavior.

Investigation of boron extraction process with aid magnesium hydroxide from mother liquor of boron production

International Nuclear Information System (INIS)

Balapanova, B.S.; Zhajmina, R.E.; Serazetdinov, D.Z.

1988-01-01

Conditions of boron - magnesium concentrate preparation from mother liquor by coprecipitation of borate - ions by magnesium hydroxide are investigated. It is shown that boron - magnesium concentrate and products of its heat treatment at 100 - 500 deg C in water are dissolved partially, and in ammonium citrate - practically completely. Suppositions are made on the composition of the product prepared, on the the structure of its crystal lattice and the processes taking place in it during heat treatment. The conclusion is made on the perspectiveness of processing of mother liquor of boron industry for boron - magnesium concentrate

Hubungan Pengajaran Mata Kuliah Ekonomi Islam terhadap Minat Mahasiswa Menabung di Bank Syariah

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Endang Mintarja

2017-07-01

Full Text Available Penelitian ini bertujuan untuk untuk mengamati hubungan antara pengajaran mata kuliah Ekonomi Islam di perguruan tinggi terhadap minat mahasiswa untuk menabung di Bank Syariah. Penelitian ini merupakan penelitian deskripstif-kuantitatif dengan mengambil kasus mahasiswa STIE Ahmad Dahlan Jakarta. Berdasarkan hasil penelitian menyimpulkan bahwa terhadap hubungan yang signifikan antara materi Ekonomi Islam, intensitas belajar, dan pemahaman mahasiswa terhadap minat menabung di Bank Syariah.

An empirical model for parameters affecting energy consumption in boron removal from boron-containing wastewaters by electrocoagulation.

Science.gov (United States)

Yilmaz, A Erdem; Boncukcuoğlu, Recep; Kocakerim, M Muhtar

2007-06-01

In this study, it was investigated parameters affecting energy consumption in boron removal from boron containing wastewaters prepared synthetically, via electrocoagulation method. The solution pH, initial boron concentration, dose of supporting electrolyte, current density and temperature of solution were selected as experimental parameters affecting energy consumption. The obtained experimental results showed that boron removal efficiency reached up to 99% under optimum conditions, in which solution pH was 8.0, current density 6.0 mA/cm(2), initial boron concentration 100mg/L and solution temperature 293 K. The current density was an important parameter affecting energy consumption too. High current density applied to electrocoagulation cell increased energy consumption. Increasing solution temperature caused to decrease energy consumption that high temperature decreased potential applied under constant current density. That increasing initial boron concentration and dose of supporting electrolyte caused to increase specific conductivity of solution decreased energy consumption. As a result, it was seen that energy consumption for boron removal via electrocoagulation method could be minimized at optimum conditions. An empirical model was predicted by statistically. Experimentally obtained values were fitted with values predicted from empirical model being as following; [formula in text]. Unfortunately, the conditions obtained for optimum boron removal were not the conditions obtained for minimum energy consumption. It was determined that support electrolyte must be used for increase boron removal and decrease electrical energy consumption.

Characterization of boron tolerant bacteria isolated from a fly ash dumping site for bacterial boron remediation.

Science.gov (United States)

Edward Raja, Chellaiah; Omine, Kiyoshi

2013-08-01

Boron is an essential micronutrient for plants, but can above certain concentrations be toxic to living organisms. A major environmental concern is the removal of boron from contaminated water and fly ash. For this purpose, the samples were collected from a fly ash dumping site, Nagasaki prefecture, Japan. The chemical characteristics and heavy metal concentration of the samples were performed by X-ray fluorescent analysis and leaching test. For bacterial analysis, samples were collected in sterile plastic sheets and isolation was carried out by serial dilution method. The boron tolerant isolates that showed values of maximum inhibitory concentration toward boron ranging from 100 to 260 mM level were screened. Based on 16S rRNA sequencing and phylogenetic analysis, the isolates were most closely related to the genera Bacillus, Lysinibacillus, Microbacterium and Ralstonia. The boron tolerance of these strains was also associated with resistant to several heavy metals, such as As (III), Cr (VI), Cd, Cu, Pb, Ni, Se (III) and Zn. Indeed, these strains were arsenic oxidizing bacteria confirmed by silver nitrate test. These strains exhibited their salt resistances ranging from 4 to 15 % were determined in Trypticase soy agar medium. The boron tolerant strains were capable of removing 0.1-2.0 and 2.7-3.7 mg l(-1) boron from the medium and fly ash at 168 h. Thus, we have successfully identified the boron tolerant and removal bacteria from a fly ash dumping site for boron remediation.

Pulverization of boron element and proportions of boron carbide in boron; Broyage de bore element et dosage de carbure de bore dans le bore

Energy Technology Data Exchange (ETDEWEB)

Lang, F M; Finck, C [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1956-07-01

It is possible to reduce boron element into fine powder by means of a mortar and pestle made of sintered boron carbide, the ratio of boron carbide introduced being less than one per cent. Boron element at our disposal is made of sharp edged, dark brown, little grains of average size greater than 5 {mu}. Grain sizes smaller than 1{mu} are required for applying thin layers of such boron. (author) [French] Il est possible de pulveriser finement du bore element au moyen de mortier et pilon en carbure de bore fritte, le taux de carbure de bore introduit etant inferieur a 1 pour cent. Le bore element dont nous disposons est constitue de petits grains brun fonce, a aretes vives, de dimension moyenne superieure a 5 {mu}. L'application de ce bore en couches minces demande des grains de dimensions inferieures a 1 {mu}. (aute0008.

Boron uptake measurements in a rat model for Boron Neutron Capture Therapy of lung tumours

Energy Technology Data Exchange (ETDEWEB)

Bortolussi, S., E-mail: silva.bortolussi@pv.infn.i [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); National Institute of Nuclear Physics (INFN), Section of Pavia, via Bassi 6, 27100 Pavia (Italy); Bakeine, J.G. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); Ballarini, F. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); National Institute of Nuclear Physics (INFN), Section of Pavia, via Bassi 6, 27100 Pavia (Italy); Bruschi, P. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); Gadan, M.A. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); Comision Nacional de Energia Atomica, Buenos Aires (Argentina); Protti, N.; Stella, S. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); National Institute of Nuclear Physics (INFN), Section of Pavia, via Bassi 6, 27100 Pavia (Italy); Clerici, A.; Ferrari, C.; Cansolino, L.; Zonta, C.; Zonta, A. [Department of Surgery, University of Pavia, via Ferrata 27100 Pavia (Italy); Nano, R. [Department of Animal Biology, University of Pavia, via Ferrata 27100 Pavia (Italy); Altieri, S. [Department of Nuclear and Theoretical Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy); National Institute of Nuclear Physics (INFN), Section of Pavia, via Bassi 6, 27100 Pavia (Italy)

2011-02-15

Lung carcinoma is the leading cause of cancer mortality in the Western countries. Despite the introduction over the last few years of new therapeutic agents, survival from lung cancer has shown no discernible improvement in the last 20 years. For these reasons any efforts to find and validate new effective therapeutic procedures for lung cancer are very timely. The selective boron uptake in the tumour with respect to healthy tissues makes Boron Neutron Capture Therapy a potentially advantageous option in the treatment of tumours that affect whole vital organs, and that are surgically inoperable. To study the possibility of applying BNCT to the treatment of diffuse pulmonary tumours, an animal model for boron uptake measurements in lung metastases was developed. Both healthy and tumour-bearing rats were infused with Boronophenylalanine (BPA) and sacrificed at different time intervals after drug administration. The lungs were extracted, and prepared for boron analysis by neutron autoradiography and {alpha}-spectroscopy. The boron concentrations in tumour and normal lung were plotted as a function of the time elapsed after BPA administration. The concentration in tumour is almost constant within the error bars for all the time intervals of the experiment (1-8 h), while the curve in normal lung decreases after 4 h from BPA infusion. At 4 h, the ratio of boron concentration in tumour to boron concentration in healthy lung is higher than 3, and it stays above this level up to 8 h. Also the images of boron distribution in the samples, obtained by neutron autoradiography, show a selective absorption in the metastases.

Laser-induced photochemical enrichment of boron isotopes

International Nuclear Information System (INIS)

Freund, S.M.; Ritter, J.J.

1976-01-01

A boron trichloride starting material containing both boron-10 isotopes and boron-11 isotopes is selectively enriched in one or the other of these isotopes by a laser-induced photochemical method involving the reaction of laser-excited boron trichloride with either H 2 S or D 2 S. The method is carried out by subjecting a low pressure gaseous mixture of boron trichloride starting material and the sulfide to infrared radiation from a carbon dioxide TE laser. The wave length of the radiation is selected so as to selectively excite one or the other of boron-10 BCl 3 molecules or boron-11 BCl 3 molecules, thereby making them preferentially more reactive with the sulfide. The laser-induced reaction produces both a boron-containing solid phase reaction product and a gaseous phase containing mostly unreacted BCl 3 and small amounts of sulfhydroboranes. Pure boron trichloride selectively enriched in one of the isotopes is recovered as the primary product of the method from the gaseous phase by a multi-step recovery procedure. Pure boron trichloride enriched in the other isotope is recovered as a secondary product of the method by the subsequent chlorination of the solid phase reaction product followed by separation of BCl 3 from the mixture of gaseous products resulting from the chlorination

A system to deposit boron films (boronization) in the DIII-D tokamak

International Nuclear Information System (INIS)

Hodapp, T.R.; Jackson, G.L.; Phillips, J.; Holtrop, K.L.; Petersen, P.I.; Winter, J.

1991-09-01

A system has been added to the D3-D tokamak to coat its plasma facing surfaces with a film of boron using diborane gas. The system includes special health and safety equipment for handling the diborane gas which is toxic and inflammable. The purpose of the boron film is to reduce the levels of impurity atoms in the D3-D plasmas. Experiments following the application of the boron film in D3-D have led to significant reductions in plasma impurity levels and the observation of a new, very high confinement regime. 9 refs., 1 fig

Boron neutron capture therapy. Synthesis of boronated amines- and DNA intercalating agents for potential use in cancer therapy

International Nuclear Information System (INIS)

Ghaneolhosseini, H.

1998-01-01

Boron Neutron Capture Therapy is a binary cancer treatment modality, involving the delivery of a suitable boron compound to tumour cells followed by irradiation of the tumour by thermal neutrons. Boronated agents can selectively be delivered to tumour cells either directly with tumour-specific boron compounds, or by use of targeting strategies. However, the efficacy of this method would increase if the boron agents are localised in the cell nucleus rather than in the cell cytoplasm when neutron irradiation takes place. With these considerations in mind, some boronated DNA intercalating/interacting agents such as phenanthridine- acridine- spermidine- and naphthalimide derivatives were synthesised. Aminoalkyl-o-carboranes were synthesised in order to be used both for coupling to macromolecules and also for halogenation of their corresponding nido-derivatives. The amino groups were introduced using the Gabriel reagent N, N-dibenzyl iminodicarboxylate to provide 1-(aminomethyl)- and 1-(2-aminoethyl)-o-carboranes. The first attempt to achieve the possibility to accumulate a higher concentration of boron atoms in the cell nucleus was to synthesize carboranyl phenanthridinium analogues by reacting a p- or o-carboranyl moiety with phenanthridine, a chromophore with a planar aromatic ring system as DNA intercalator. Boronated acridine-spermidine, boronated diacridine, and boronated dispermidine were obtained in order to increase water solubility to avoid the interaction of these agents with non-DNA sides of the cell, especially membranes; and to enhance the feasibility of a higher DNA-binding constant and also decrease the DNA-drug dissociation rate. Finally, the synthesis of a boronated naphthalimide derivative was carried out by nucleophilic reaction of a primary aminoalkyl-p-carborane with naphthalic anhydride. Biological evaluations on DNA-binding, toxicity, and cellular binding with carboranyl phenanthridinium analogues, boronated acridine- and spermidine are described

PENGARUH SUPERVISI AKADEMIK DAN KEPEMIMPINAN KEPALA SEKOLAH TERHADAP DISIPLIN KERJA GURU

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samsuadi PEP

2015-09-01

Full Text Available Tujuan  penelitian  adalah  (1  untuk mengetahui pengaruh supervisi akademik pengawas dan kepemimpinan kepala sekolah secara bersama-sama berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng, (2 untuk  mengetahui  pengaruh  supervisi akademik  pengawas   terhadap   disiplin   kerja   guru   SMK Negeri 1 Bantaeng,   (3  untuk   mengetahui   pengaruh   kepemimpinan   kepala   sekolah terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. Populasi   penelitian   ini  adalah   guru   SMK Negeri 1 Bantaeng yang  berjumlah 80 orang,  melalui rumus Slovin diperoleh sampel sebanyak  67 orang. Teknik penarikan sampel dilakukan dengan menggunakan teknik proportionate stratified  random sampling. Instrumen pengumpulan data yang digunakan adalah angket dengan memakai  skala Likert modifikasi Hadi. Hasil analisis deskriptif menunjukkan bahwa supervisi akademik pengawas dan  kepemimpinan kepala sekolah berada pada katregori tinggi. Sedangkan dari hasil uji prasyarat tidak ditemukan gejala multikolinieritas,  sehingga  memenuhi  syarat  untuk  melakukan  analisis  regresi ganda.  Dari  hasil  uji  hipotesis  ditemukan  bahwa supervisi akademik pengawas dan kepemimpinan kepala sekolah  secara bersama-sama berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. Secara parsial supervisi  akademik pengawas tidak berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng, sedangkan kepemimpinan kepala sekolah berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. 

Pengaruh Weight Training Dan Body Weight Training Terhadap Power Tungkai Atlet Bola Tangan

OpenAIRE

Ahmad Nasrullah,, Rizki Muhammad Afif

2016-01-01

Belum diketahuinya latihan berpengaruh untuk meningkatkan power tungkai atlet bola tangan. Penelitian ini bertujuan untuk: (1) mengetahui pengaruh weight training terhadap power otot tungkai atlet bola tangan, (2) mengetahui pengaruh body weight training terhadap power otot tungkai atlet bola tangan, dan (3) mengetahui metode latihan yang lebih berpengaruh antara weight training dan body weight training terhadap power otot tungkai atlet bola tangan.Penelitian ini adalah eksperimen dengan desa...

Hot flow behavior of boron microalloyed steels

International Nuclear Information System (INIS)

Lopez-Chipres, E.; Mejia, I.; Maldonado, C.; Bedolla-Jacuinde, A.; El-Wahabi, M.; Cabrera, J.M.

2008-01-01

This research work studies the effect of boron contents on the hot flow behavior of boron microalloyed steels. For this purpose, uniaxial hot-compression tests were carried out in a low carbon steel microalloyed with four different amounts of boron over a wide range of temperatures (950, 1000, 1050 and 1100 deg. C) and constant true strain rates (10 -3 , 10 -2 and 10 -1 s -1 ). Experimental results revealed that both peak stress and peak strain tend to decrease as boron content increases, which indicates that boron additions have a solid solution softening effect. Likewise, the flow curves show a delaying effect on the kinetics of dynamic recrystallization (DRX) when increasing boron content. Deformed microstructures show a finer austenitic grain size in the steel with higher boron content (grain refinement effect). Results are discussed in terms of boron segregation towards austenitic grain boundaries during plastic deformation, which increases the movement of dislocations, enhances the grain boundary cohesion and modificates the grain boundary structure

PENGARUH QUALITY OF WORK LIFE (QWL TERHADAP KINERJA PEGAWAI DENGAN DISIPLIN DAN KEPUASAN KERJA SEBAGAI VARIABEL INTERVENING

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Titik Nurbiyati

2016-01-01

Full Text Available Penelitian ini dimaksudkan untuk mengetahui pengaruh antara variable Quality of Work Life (QWL terhadap kinerja karyawan dengan disiplin dan kepuasan kerja sebagai variabel intervening. Data dalam riset ini menggunakan data primer dengan menggunakan alat analisis regresi dan analisis path. Dari analisis data diperoleh hasil secara parsial QWL berpengaruh signifikan terhadap kepuasan kerja dan kinerja pegawai namun tidak berpengaruh terhadap disiplin kerja. Secara simultan QWL, disiplin kerja dan kepuasan kerja secara bersama-sama berpengaruh signifikan terhadap kinerja pegawai. Selain itu ada pengaruh tidak langsung (QWL terhadap kinerja melalui disiplin kerja lebih kecil dibandingkan pengaruh langsung terhadap kinerja. Kemudian ada pengaruh tidak langsung (QWL terhadap kinerja melalui kepuasan kerja lebih besar dibandingkan pengaruh langsung (QWL terhadap kinerja. Nilai R Square sebesar 0,553 yang artinya variabel QWL, kepuasan kerja dan disiplin kerja mempengaruhi kinerja hanya sebesar 55,30 % sedangkan 44,7% dipengaruhi faktor lain. Rekomendasi dari hasil riset ini variabel QWL kategori pertumbuhan dan perkembangan perlu adanya program Training Need Analysis (TNA guna memenuhi kebutuhan tenaga kependidikan yang sesuai dengan kebutuhan pekerjaan. Sedangkan variabel QWL kategori kompensasi perlu mengadakan salary survey terhadap perguruan tinggi yang dipilih secara sampling yang bertujuan untuk melakukan perbandingan data mengenai kebijakan, praktek dan metode penggajian. Perlu dilakukan riset lanjutan untuk mengetahui faktor yang berpengaruh terhadap kinerja selain faktor QWL, disiplin kerja dan kepuasan kerja.Kata Kunci: Quality of Work Life (QWL, Disiplin Kerja, Kepuasan kerja dan Kinerja Karyawan

Boron-based nanostructures: Synthesis, functionalization, and characterization

Science.gov (United States)

Bedasso, Eyrusalam Kifyalew

Boron-based nanostructures have not been explored in detail; however, these structures have the potential to revolutionize many fields including electronics and biomedicine. The research discussed in this dissertation focuses on synthesis, functionalization, and characterization of boron-based zero-dimensional nanostructures (core/shell and nanoparticles) and one-dimensional nanostructures (nanorods). The first project investigates the synthesis and functionalization of boron-based core/shell nanoparticles. Two boron-containing core/shell nanoparticles, namely boron/iron oxide and boron/silica, were synthesized. Initially, boron nanoparticles with a diameter between 10-100 nm were prepared by decomposition of nido-decaborane (B10H14) followed by formation of a core/shell structure. The core/shell structures were prepared using the appropriate precursor, iron source and silica source, for the shell in the presence of boron nanoparticles. The formation of core/shell nanostructures was confirmed using high resolution TEM. Then, the core/shell nanoparticles underwent a surface modification. Boron/iron oxide core/shell nanoparticles were functionalized with oleic acid, citric acid, amine-terminated polyethylene glycol, folic acid, and dopamine, and boron/silica core/shell nanoparticles were modified with 3-(amino propyl) triethoxy silane, 3-(2-aminoethyleamino)propyltrimethoxysilane), citric acid, folic acid, amine-terminated polyethylene glycol, and O-(2-Carboxyethyl)polyethylene glycol. A UV-Vis and ATR-FTIR analysis established the success of surface modification. The cytotoxicity of water-soluble core/shell nanoparticles was studied in triple negative breast cancer cell line MDA-MB-231 and the result showed the compounds are not toxic. The second project highlights optimization of reaction conditions for the synthesis of boron nanorods. This synthesis, done via reduction of boron oxide with molten lithium, was studied to produce boron nanorods without any

Meeting the challenge of homogenous boron targeting of heterogeneous tumors for effective boron neutron capture therapy (BNCT)

International Nuclear Information System (INIS)

Heber, Elisa M.; Trivillin, Veronica A.; Itoiz, Maria E.; Rebagliati, J. Raul; Batistoni, Daniel; Kreimann, Erica L.; Schwint, Amanda E.; Nigg, David W.; Gonzalez, Beatriz N.

2006-01-01

BNCT is a tumor cell targeted radiation therapy. Inadequately boron targeted tumor populations jeopardize tumor control. Meeting the to date unresolved challenge of homogeneous targeting of heterogeneous tumors with effective boron carriers would contribute to therapeutic efficacy. The aim of the present study was to evaluate the degree of variation in boron content delivered by boronophenylalanine (BPA), GB-10 (Na 2 10 B 10 H 10 ) and the combined administration of (BPA+GB-10) in different portions of tumor, precancerous tissue around tumor and normal pouch tissue in the hamster cheek pouch oral cancer model. Boron content was evaluated by ICP-AES. The degree of homogeneity in boron targeting was assessed in terms of the coefficient of variation ([S.D./Mean]x100) of boron values. Statistical analysis of the results was performed by one-way ANOVA and the least significant difference test. GB-10 and GB-10 plus BPA achieved respectively a statistically significant 1.8-fold and 3.3-fold increase in targeting homogeneity over BPA. The combined boron compound administration protocol contributes to homogeneous targeting of heterogeneous tumors and would increase therapeutic efficacy of BNCT by exposing all tumor populations to neutron capture reactions in boron. (author)

PENGARUH TERPAAN INFORMASI RISET MELALUI WEBSITE www.ppet.lipi.go.id TERHADAP SIKAP MAHASISWA MENGENAI PENELITIAN

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Noorfiya Umniyati

2017-06-01

Full Text Available Penelitian ini bertujuan untuk mengukur pengaruh terpaan informasi riset di Pusat Penelitian Elektronika dan Telekomunikasi LIPI melalui website www.ppet.lipi.go.id terhadap sikap mahasiswa mengenai penelitian. Tujuan penelitian ini untuk mengetahui besarnya pengaruh jumlah waktu yang digunakan dalam mengakses informasi terhadap sikap mahasiswa mengenai penelitian, isi pesan terhadap sikap mahasiswa mengenai penelitian, dan hubungan individu dengan media terhadap sikap mahasiswa mengenai penelitian. Penelitian ini menggunakan metode kuantitatif dengan analisis jalur. Hasil penelitian ini menunjukan bahwa secara keseluruhan terpaan informasi riset melalui website www.ppet.lipi.go.id berpengaruh secara signifikan terhadap sikap mahasiswa Teknik Telekomunikasi Telkom University mengenai penelitian. Secara parsial, hasil penelitian menunjukkan bahwa variabel jumlah waktu yang digunakan dalam informasi dan variabel hubungan individu dengan media memberikan pengaruh yang siginifikan terhadap sikap mahasiswa mengenai penelitian. Sedangkan variabel isi pesan tidak memberikan pengaruh yang siginifikan karena memberikan pengaruh yang sedikit. Kesimpulan pada penelitian ini menunjukan bahwa secara keseluruhan informasi riset telah melakukan terpaan cukup besar terhadap sikap mahasiswa jurusan Teknik Telekomunikasi Telkom University mengenai penelitian yang mengakses website www.ppet.lipi.go.id.

ISOLASI DAN UJI DAYA ANTIMIKROBA EKSTRAK DAUN KERSEN (Muntingia calabura

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YP Arum

2013-07-01

Full Text Available Daun kersen mengandung senyawa flavonoid. Flavonoid yang merupakan senyawa obat dapat digunakan sebagai antioksidan, antibakteri, dan antiinflamasi. Tujuan dari penelitian ini adalah untuk mengetahui daya antimikroba ekstrak daun kersen terhadap Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis, dan Staphylococcus aureus. Metode penelitian yang digunakan adalah mengisolasi senyawa flavonoid dari daun kersen dengan menggunakan larutan etanol dan metanol. Identifikasi flavonoid dilakukan dengan menggunakan IR dan UV-Vis. Selanjutnya sifat antibakteri flavonoid diujikan pada bakteri Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis dan Staphylococcus aureus. Hasil penelitian menunjukkan bahwa ekstrak hasil isolasi daun kersen merupakan senyawa flavonoid berupa auron, flavonol, dan flavon. Hal ini ditunjukkan dengan munculnya puncak pada spketrum UV-Vis di daerah panjang gelombang 382 nm, 350 nm dan 323 nm serta diperkuat dengan munculnya serapan khas C=O dan –OH pada spektrum IR. Ekstrak hasil isolasi daun kersen dengan pelarut etanol dan metanol memiliki daya hambat terhadap bakteri yakni terbukti mempunyai sifat antibakteri terhadap bakteri Eschericia coli, Pseudomonas aeruginosa, Bacillus subtilis, dan Staphylococcus aureus. Semakin tinggi konsentrasi ekstrak daun kersen semakin tinggi pula daya hambatnya terhadap bakteri. Ekstrak yang paling efektif menghambat bakteri adalah pada ekstrak dengan konsentrasi 96% dengan pelarut metanol. Cherry leaves can be used as a drug because it contains of flavonoid compounds, which contain antioxidant, antibacterial, and anti-inflammatory. The study was aimed to determine the antimicrobial strength of cherry leaf extract against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Staphylococcus aureus. This research used flavonoid compound from cherry leaves isolation method by using ethanol and methanol solvent. IR and UV-Vis was used to identify flavonoid, then

Determination of boron in graphite, boron carbide and glass by ICP-MS, ICP-OES and conventional wet chemical methods

International Nuclear Information System (INIS)

Venkatesh, K.; Kamble, Granthali S.; Venkatesh, Manisha; Kumar, Sanjukta A.; Reddy, A.V.R.

2014-01-01

Boron is an important element of interest in nuclear reactor materials due to its high neutron absorption cross section (σ 0 =3837 barns for 10 B). In the present paper, R and D work and routinely used methods have been described for the analysis of case samples (1) Graphite where boron is present at trace levels, (2) Boron Carbide having boron concentration of about 80% and (3) Glass containing 4-6 % boron. (author)

Boron removal from geothermal waters by electrocoagulation

Energy Technology Data Exchange (ETDEWEB)

Yilmaz, A. Erdem [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering., 25240 Erzurum (Turkey)], E-mail: aerdemy@atauni.edu.tr; Boncukcuoglu, Recep [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering., 25240 Erzurum (Turkey); Kocakerim, M. Muhtar [Atatuerk University, Faculty of Engineering, Department of Chemical Engineering, 25240 Erzurum (Turkey); Yilmaz, M. Tolga; Paluluoglu, Cihan [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering., 25240 Erzurum (Turkey)

2008-05-01

Most of the geothermal waters in Turkey contain extremely high concentration of boron when they are used for irrigation. The use of geothermal waters for irrigation can results in excess amount deposition of boron in soil. On the other hand, a minimal boron concentration is required for irrigational waters. In this study, electrocoagulation (EC) was selected as a treatment process for the removal of boron from thermal waters obtained from Ilica-Erzurum in Turkey. Current density (CD), pH of solution and temperature of solution were selected as operational parameters. The results showed that boron removal efficiency increased from pH 4.0 to 8.0 and decreased at pH 10.0. Although boron removal efficiency was highest at pH 8.0, energy consumption was very high at this pH value compared to other pH intervals. Boron removal efficiency reached to 95% with increasing current density from 1.5 to 6.0 mA/cm{sup 2}, but energy consumption was also increased in this interval. At higher temperatures of solution, such as 313 and 333 K, boron removal efficiency increased. At optimum conditions, boron removal efficiency in geothermal water reached up to 95%.

Boron removal from geothermal waters by electrocoagulation

International Nuclear Information System (INIS)

Yilmaz, A. Erdem; Boncukcuoglu, Recep; Kocakerim, M. Muhtar; Yilmaz, M. Tolga; Paluluoglu, Cihan

2008-01-01

Most of the geothermal waters in Turkey contain extremely high concentration of boron when they are used for irrigation. The use of geothermal waters for irrigation can results in excess amount deposition of boron in soil. On the other hand, a minimal boron concentration is required for irrigational waters. In this study, electrocoagulation (EC) was selected as a treatment process for the removal of boron from thermal waters obtained from Ilica-Erzurum in Turkey. Current density (CD), pH of solution and temperature of solution were selected as operational parameters. The results showed that boron removal efficiency increased from pH 4.0 to 8.0 and decreased at pH 10.0. Although boron removal efficiency was highest at pH 8.0, energy consumption was very high at this pH value compared to other pH intervals. Boron removal efficiency reached to 95% with increasing current density from 1.5 to 6.0 mA/cm 2 , but energy consumption was also increased in this interval. At higher temperatures of solution, such as 313 and 333 K, boron removal efficiency increased. At optimum conditions, boron removal efficiency in geothermal water reached up to 95%

Removal of boron (B) from waste liquors.

Science.gov (United States)

Jiang, J Q; Xu, Y; Simon, J; Quill, K; Shettle, K

2006-01-01

This paper explores the use of electrocoagulation to remove boron from waste effluent in comparison with alum coagulation. In treating model test wastes, greater boron removals were achieved with electrocoagulation at low doses than conventional alum coagulation when reaction was undertaken for the same conditions (pH 8.5, and initial boron concentration was 500 mg/L). Al electrocoagulation can achieve good boron removal performance (68.3%) at a dose of 2.1 (as molar ratio of Al:B, and for current density of 62.1 A/m2), while alum coagulation can only achieve the maximum boron removal of 56% at a dose of 2.4. Also, Al electrocoagulation can remove 15-20% more boron than alum coagulation for the same dose compared in the treatment of both model test wastes and industry effluent. The estimation of running costs shows that to achieve 75% boron removal from industry waste effluent, i.e. removing 150 g of boron from 1 m3 of effluent, electrocoagulation was 6.2 times cheaper than alum coagulation. The economic advantage of electrocoagulation in the treatment of boron-containing waste effluent is thus significant.

FAKTOR PENDUKUNG TERHADAP INTENSI BERWIRAUSAHA PADA MAHASISWA

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Irene Paulina

2012-03-01

Full Text Available Penelitian ini bertujuan untuk menganalisis pola hubungan kausal antara kecerdasan emosi, sikap mandiri, dan lingkungan terhadap intensi berwirausaha pada mahasiswa Universitas Gunadarma. Kecerdasan emosi, sikap mandiri, dan lingkungan perlu dimiliki oleh seseorang untuk membangun intensi berwirausaha. Data yang digunakan merupakan data primer dimana sampel diambil berdasar simple random sampling sebanyak 200 mahasiswa Fakultas Ekonomi Universitas Gunadarma angkatan 2007 dan 2008. Model persamaan struktural digunakan untuk menguji hipotesis penelitian dengan bantuan aplikasi AMOS 7.0. Hasil penelitian menunjukkan bahwa kecerdasan emosi berpengaruh langsung dan positif dengan tingkat signifikansi terhadap intensi berwirausaha, sedangkan sikap mandiri berpengaruh signifikan terhadap intensi berwirausaha, adapun lingkungan tidak berpengaruh terhadap intensi berwirausaha.This study aims to analyze the pattern of causal relationships between emotional intelligence, independent attitude, and environment on entrepreneurial intentions of university students Gunadarma on emotional intelligence, independent attitude, and environment need to be owned by the person’s intention to build entrepreneurship. The data used are the primary data where samples are taken by simple random sampling of 200 students of the Faculty of Economics, University Gunadarma class of 2007 and 2008. Structural equation model is used to test the research hypotheses with the help of AMOS 7.0 applications. The results showed that the direct effect of emotional intelligence and positive with a significance level of entrepreneurial intention, the independent attitude significantly influences entrepreneurial intentions, on the other hand, the environment had no effect on entrepreneurial intentions, As the result this concept map have affectivity to be used in inquiry learning.

Continued biological investigations of boron-rich oligomeric phosphate diesters (OPDs). Tumor-selective boron agents for BNCT

International Nuclear Information System (INIS)

Lee, Mark W.; Shelly, Kenneth; Kane, Robert R.; Hawthorne, M. Frederick

2006-01-01

Clinical success of Boron Neutron Capture Therapy will rely on the selective intracellular delivery of high concentrations of boron-10 to tumor tissue. In order for a boron agent to facilitate clinical success, the simultaneous needs of obtaining a high tumor dose, high tumor selectivity, and low systemic toxicity must be realized. Boron-rich oligomeric phosphate diesters (OPDs) are a class of highly water-soluble compounds containing up to 40% boron by weight. Previous work in our groups demonstrated that once placed in the cytoplasm of tumor cells, OPDs quickly accumulate within the cell nucleus. The objective of the current study was to determine the biodistribution of seven different free OPDs in BALB/c mice bearing EMT6 tumors. Fructose solutions containing between 1.4 and 6.4 micrograms of boron per gram of tissue were interveinously injected in mice seven to ten days after tumor implantation. At intervals during the study, animals were euthanized and samples of tumor, blood, liver, kidney, brain and skin were collected and analyzed for boron content using ICP-AES. Tumor boron concentrations of between 5 and 29 ppm were achieved and maintained over the 72-hour time course of each experiment. Several OPDs demonstrated high tumor selectivity with one oligomer exhibiting a tumor to blood ratio of 35:1. The apparent toxicity of each oligomer was assessed through animal behavior during the experiment and necropsy of each animal upon sacrifice. (author)

ANALISIS KONTRIBUSI PAJAK HOTEL TERHADAP PENDAPATAN ASLI DAERAH KABUPATEN NUNUKAN

OpenAIRE

-, MULIATI

2014-01-01

2014 Analisis Kontribusi Pajak Hotel terhadap Pendapatan Asli Daerah Kabupaten Nunukan Analysis of The Contributions Tax on Hotel Againts Regional Renenue Nunukan District Muliati Haerial M. Christian Mangiwa Penelitian ini bertujuan untuk mengetahui seberapa besar kontribusi pajak hotel terhadap pendapatan asli daerah, mengetahui sistem pengawasan, dan potensi yang ada untuk meningkatkan pajak hotel, mengetahui sistem dan prosedur...

SHB1/HY1 Alleviates Excess Boron Stress by Increasing BOR4 Expression Level and Maintaining Boron Homeostasis in Arabidopsis Roots

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Qiang Lv

2017-05-01

Full Text Available Boron is an essential mineral nutrient for higher plant growth and development. However, excessive amounts of boron can be toxic. Here, we report on the characterization of an Arabidopsis mutant, shb1 (sensitive to high-level of boron 1, which exhibits hypersensitivity to excessive boron in roots. Positional cloning demonstrated that the shb1 mutant bears a point mutation in a gene encoding a heme oxygenase 1 (HO1 corresponding to the HY1 gene involved in photomorphogenesis. The transcription level of the SHB1/HY1 gene in roots is up-regulated under excessive boron stimulation. Either overexpressing SHB1/HY1 or applying the HO1 inducer hematin reduces boron accumulation in roots and confers high boron tolerance. Furthermore, carbon monoxide and bilirubin, catalytic products of HO1, partially rescue the boron toxicity-induced inhibition of primary root growth in shb1. Additionally, the mRNA level of BOR4, a boron efflux transporter, is reduced in shb1 roots with high levels of boron supplementation, and hematin cannot relieve the boron toxicity-induced root inhibition in bor4 mutants. Taken together, our study reveals that HO1 acts via its catalytic by-products to promote tolerance of excessive boron by up-regulating the transcription of the BOR4 gene and therefore promoting the exclusion of excessive boron in root cells.

Minat masyarakat terhadap layanan Near Field Communication (NFC komersial di Indonesia

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Kasmad Ariansyah

2012-06-01

Full Text Available Perkembangan teknologi informasi dan komunikasi telah membawa perubahan diberbagai aspek, tak terkecuali dalam metode pembayaran, yaitu dengan munculnya sistem pembayaran uang elektronik. Keberadaan uang elektronik ini sejalan dengan program kerja Bank Indonesia untuk menciptakan Less Cash Society (LCS. Untuk mewujudkan LCS, Bank Indonesia bekerjasama dengan Kementerian komunikasi dan informatika. yang memiliki peran dan kewajiban untuk menetapkan standar TIK yang digunakan dalam penggunaan uang elektronik, mengkoordinasikan seluruh kegiatan pengembangan transaksi dengan menggunakan elektronik serta melakukan monitoring, sosialisasi, pembinaan dan evaluasi penggunaan uang elektronik. Layanan NFC komersial hadir sebagai alternatif bagi penyelenggaraan sistem uang elektronik. Penelitian ini dilakukan untuk mendapatkan gambaran mengenai minat masyarakat dan variabel-variabel yang mempengaruhi minat terhadap layanan NFC komersial tersebut. Hasil penelitian menunjukkan bahwa 90% responden berminat terhadap layanan ini. Inovativeness dan relative advantage memiliki pengaruh yang positif dan signifikan terhadap minat, sedangkan variabel image dan compatibility memiliki korelasi positif terhadap minat, tetapi pengaruhnya tidak signifikan.

Faktor Resiko yang Berpengaruh Terhadap Kepatuhan Diet Hipertensi

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Santi Miyusliani

2011-11-01

Full Text Available Data Dinas Kesehatan Kota Pekanbaru tahun 2010, menunjukkan bahwa dari sepuluh penyakit terbesar di Puskesmas, hipertensi merupakan penyakit nomor tiga terbesar yaitu 15,6%. Di Puskesmas Sidomulyo sendiri pada tahun 2010 hipertensi merupakan penyakit peringkat pertama dari sepuluh penyakit terbesar yaitu 13,29%. Penelitian ini bertujuan untuk melihat faktor-faktor yang berhubungan dengan kepatuhan penderita terhadap diet hipertensi di Puskesmas Sidomulyo Pekanbaru tahun 2011. Penelitian ini merupakan penelitian kuantitatif dengan desain Cross Sectional dengan jumlah sampel 177 orang dan alat ukur yang digunakan adalah kuesioner. Analisa yang digunakan adalah analisa bivariat dengan uji Chi square dan analisa multivariat dengan uji Regresi Logistik Ganda. Hasil penelitian menunjukkan ada pengaruh antara pengetahuan, usia, jenis kelamin, status sosial ekonomi dan motivasi terhadap kepatuhan diet hipertensi. Faktor yang paling dominan berpengaruh terhadap kepatuhan diet hipertensi adalah usia. Diharapkan kepada tenaga kesehatan Puskesmas Sidomulyo supaya lebih sering mengingatkan dan mengulang kembali informasi bahwa pentingnya mematuhi diet, seperti memberikan konseling yang mendalam tentang hipertensi. 

PENGARUH PERSONAL ATTRIBUTES DAN PERSONAL ENVIRONMENT TERHADAP MINAT MAHASISWA MENJADI ENTREPRENEUR

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Pramita Wahyu Anastia

2016-03-01

Full Text Available Tujuan dilakukan penelitian ini adalah mengetahui pengaruh keberhasilan diri, toleransi akan risiko, kebebasan dalam bekerja, faktor sociological, dan faktor environmental terhadap minat menjadi entrepreneur baik secara simultan maupun parsial. Penelitian ini merupakan penelitian kuantitatif. Populasi dan sampel dalam penelitian ini adalah seluruh mahasiswa Pendidikan Ekonomi Akuntansi 2009, Fakultas Ekonomi Universitas Negeri Semarang yang berjumlah 92 mahasiswa. Metode analisis data yang digunakan yaitu analisis deskriptif dan regresi linier berganda. Hasil penelitian menunjukkan bahwa ada pengaruh positif keberhasilan diri, toleransi akan risiko, kebebasan dalam bekerja, faktor sociological, faktor environmental terhadap minat mahasiswa menjadi entrepreneur sebesar 55,4%. Secara parsial variabel keberhasilan diri berpengaruh positif terhadap minat mahasiswa menjadi entrepreneur sebesar 7,7%, toleransi akan risiko berpengaruh positif terhadap minat mahasiswa menjadi entrepreneur sebesar 5,24%, kebebasan dalam bekerja berpengaruh positif terhadap minat mahasiswa menjadi entrepreneur sebesar 5,06%, faktor sociological berpengaruh positif terhadap minat mahasiswa menjadi entrepreneur sebesar 7,95%, dan faktor environmental berpengaruh positif terhadap minat mahasiswa menjadi entrepreneur sebesar 4,93%. The purpose of this study was to determine the influenced of self - achievement, risk tolerance, freedom to work, sociological factors, and environmental factors to student’s interest in entrepreneurship either simultaneously or partially. This research is quantitative research. The population and sample in this study were students of Accountancy Economic Educational 2009, Economic Faculty, Semarang State University totaling 92 students. The method of data analysis is descriptive analysis and multiple linear regression. The results of this research showed that self-achievement, risk tolerance and freedom to work, sociological factors

PENGARUH MEKANISME CORPORATE GOVERNANCE, KUALITAS AUDITOR EKSTERNAL, DAN LIKUIDITAS TERHADAP KUALITAS LABA

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Amanita Novi Yushita

2013-10-01

Full Text Available Abstrak: Pengaruh Mekanisme Corporate Governance, Kualitas Auditor Eksternal, dan Likuiditas Terhadap Kualitas Laba. Tujuan penelitian ini adalah memberikan bukti empiris pengaruh penerapan mekanisme corporate governance yang terdiri dari struktur dewan direksi, kepemilikan manajerial, kepemilikan institusional, komite audit, dan komisaris independen terhadap kualitas laba. Penelitian ini menggunakan sampel sebanyak 22 perusahaan manufaktur yang listing di BEI pada periode 2007-2011. Analisis GLS digunakan sebagai teknik analisis data dalam penelitian ini. Hasil penelitian menunjukkan bahwa struktur dewan direksi, komisaris independen berpengaruh positif dan signifikan terhadap Discretionary Accrual (DTAC atau berpengaruh negatif terhadap kualitas laba. Kemudian kualitas auditor eksternal berpengaruh negatif dan signifikan terhadap Discretionary Accrual (DTAC atau berpengaruh positif terhadap kualitas laba. Sedangkan kepemilikan manajerial, kepemilikan institusional, komite audit, dan likuiditas tidak berpengaruh signifikan terhadap kualitas laba.   Kata kunci: corporate governance, kualitas auditor eksternal, likuiditas, kualitas laba. Abstract: The influence of Corporate Governance Mechanism, External Auditor Quality, and Liquidity on the Quality of Earnings. The purpose of this study is to provide empirical evidence of the effect of the application of corporate governance mechanisms consisting of board structure, managerial ownership, institutional ownership, audit committees and independent commissioners on the quality of earnings. This study used a sample of 22 manufacturing companies listed on the Stock Exchange in the period 2007-2011. GLS analysis is used as a data analysis technique in this study. The results showed that the board structure and the proportions of independent commissioner have a positive and significant effect to discretionary accrual (DTAC or have a negative effect to the earnings quality. The quality of external

PERAN NILAI UTILITARIAN DAN HEDONIS TERHADAP KEPUASAN DAN LOYALITAS KONSUMEN MINUMAN PROBIOTIK

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Imam Santoso

2016-11-01

Full Text Available The rising standard of living and welfare of the community influences the food consuming pattern. This is signified by an increase in demand for probiotics as a functional beverage. This study aims to analyze the role of utilitarian and hedonic attitudes towards customer satisfaction and loyalty. Non-probability and purposive sampling were utilized as the sampling techniques of this study. There were 100 respondents in total participated in the study. The criteria of respondents were ages of 18 and older and consumers of brand X of probiotics beverage for at least twice a month. The data were processed by using the Partial Least Square (PLS. The results showed that the utilitarian value has a significant effect on satisfaction and customer loyalty, while the hedonic one affects customer satisfaction and loyalty. The results of this research also showed that satisfaction has an influence on customer loyalty.Keywords: hedonic, satisfaction, loyalty, probiotics, utilitarian, PLSABSTRAKMeningkatnya  taraf hidup dan kesejahteraan masyarakat berpengaruh terhadap pola konsumen pangan.  Hal ini ditandai dengan meningkatnya permintaan minuman probiotik sebagai minuman fungsional. Penelitian ini bertujuan menganalisis peran utilitarian dan sikap hedonis terhadap kepuasan dan loyalitas konsumen. Metode pengambilan sampel  dalam penelitian ini adalah non probability sampling  dengan  teknik purposive sampling.  Jumlah responden sebanyak 100 orang. Kriteria responden adalah penduduk dengan usia 18 tahun ke atas  dan mengkonsumsi minuman probiotik merk X minimal dua kali dalam  sebulan. Data diolah menggunakan Partial Least Square (PLS. Hasil penelitian menunjukkan utilitarian berpengaruh signifikan terhadap kepuasan maupun terhadap loyalitas konsumen. Nilai hedonis berpengaruh  terhadap kepuasan konsumen dan juga berpengaruh terhadap loyalitas.  Hasil riset ini  juga menunjukkan bahwa kepuasan berpengaruh terhadap loyalitas konsumen.Kata kunci

Pengaruh Konten Post Instagram terhadap Online Engagement: Studi Kasus pada Lima Merek Pakaian Wanita

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Amanda Putri Santoso

2017-03-01

Full Text Available Sosial media digunakan sebagai ruang untuk berinteraksi dengan orang berbagai kalangan. Salah satu sosial media yang paling banyak digunakan di dunia, termasuk di Indonesia adalah Instagram. Instagram banyak digunakan perusahaan untuk menjalin hubungan dengan konsumen, menyampaikan informasi, mencari tahu tren dan keinginan konsumen, serta membangun merek (branding. Penelitian ini bertujuan untuk mencari tahu bagaimana pengaruh tipe post terhadap online engagement di lima online shop pakaian wanita dan bagaimana pengaruh waktu posting terhadap online engagement di lima online shop pakaian wanita tersebut. Selain itu, penelitian ini juga bertujuan untuk menemukan rekomendasi pengelolaan posting di lima akun online shop pakaian wanita untuk meningkatkan online engagement. Penelitian ini menggunakan data post yang diunggah oleh lima akun Instagram online shop pakaian wanita dari bulan November 2015 hingga Oktober 2016 untuk dijadikan objek penelitian. Hasil dari penelitian ini menunjukkan bahwa tipe post dan waktu posting (bulan dan hari memiliki pengaruh signifikan terhadap online engagement (like dan komentar. Tipe post event memiliki pengaruh paling signifikan terhadap like dan komentar. Sedangkan bulan yang memiliki pengaruh paling signifikan terhadap like dan komentar adalah bulan Maret, Juni, dan Juli. Hari Kamis, Jumat, dan Sabtu merupakan hari yang memiliki pengaruh signifikan terhadap like dan komentar.

Boron rates for triticale and wheat crops

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Corrêa Juliano Corulli

2005-01-01

Full Text Available No reports are registered on responses to boron fertilization nutrient deficiency and toxicity in triticale crops. The aim of this study was to evaluate triticale response to different rates of boron in comparison to wheat in an hapludox with initial boron level at 0.08 mg dm-3 4 4 factorial design trial completely randomized blocks design (n = 4. Boron rates were 0; 0.62; 1.24 and 1.86 mg dm-3; triticale cultivars were IAC 3, BR 4 and BR 53 and IAPAR 38 wheat crop was used for comparison. The wheat (IAPAR 38 crop presented the highest boron absorption level of all. Among triticale cultivars, the most responsive was IAC 53, presenting similar characteristics to wheat, followed by BR 4; these two crops are considered tolerant to higher boron rates in soil. Regarding to BR 53, no absorption effect was observed, and the cultivars was sensitive to boron toxicity. Absorption responses differed for each genotype. That makes it possible to choose and use the best-adapted plants to soils with different boron rates.

An empirical model for parameters affecting energy consumption in boron removal from boron-containing wastewaters by electrocoagulation

Energy Technology Data Exchange (ETDEWEB)

Yilmaz, A. Erdem [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering, 25240 Erzurum (Turkey)]. E-mail: aerdemy@atauni.edu.tr; Boncukcuoglu, Recep [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering, 25240 Erzurum (Turkey); Kocakerim, M. Muhtar [Atatuerk University, Faculty of Engineering, Department of Chemical Engineering, 25240 Erzurum (Turkey)

2007-06-01

In this study, it was investigated parameters affecting energy consumption in boron removal from boron containing wastewaters prepared synthetically, via electrocoagulation method. The solution pH, initial boron concentration, dose of supporting electrolyte, current density and temperature of solution were selected as experimental parameters affecting energy consumption. The obtained experimental results showed that boron removal efficiency reached up to 99% under optimum conditions, in which solution pH was 8.0, current density 6.0mA/cm{sup 2}, initial boron concentration 100mg/L and solution temperature 293K. The current density was an important parameter affecting energy consumption too. High current density applied to electrocoagulation cell increased energy consumption. Increasing solution temperature caused to decrease energy consumption that high temperature decreased potential applied under constant current density. That increasing initial boron concentration and dose of supporting electrolyte caused to increase specific conductivity of solution decreased energy consumption. As a result, it was seen that energy consumption for boron removal via electrocoagulation method could be minimized at optimum conditions. An empirical model was predicted by statistically. Experimentally obtained values were fitted with values predicted from empirical model being as following;[ECB]=7.6x10{sup 6}x[OH]{sup 0.11}x[CD]{sup 0.62}x[IBC]{sup -0.57}x[DSE]{sup -0.}= {sup 04}x[T]{sup -2.98}x[t] Unfortunately, the conditions obtained for optimum boron removal were not the conditions obtained for minimum energy consumption. It was determined that support electrolyte must be used for increase boron removal and decrease electrical energy consumption.

An empirical model for parameters affecting energy consumption in boron removal from boron-containing wastewaters by electrocoagulation

International Nuclear Information System (INIS)

Yilmaz, A. Erdem; Boncukcuoglu, Recep; Kocakerim, M. Muhtar

2007-01-01

In this study, it was investigated parameters affecting energy consumption in boron removal from boron containing wastewaters prepared synthetically, via electrocoagulation method. The solution pH, initial boron concentration, dose of supporting electrolyte, current density and temperature of solution were selected as experimental parameters affecting energy consumption. The obtained experimental results showed that boron removal efficiency reached up to 99% under optimum conditions, in which solution pH was 8.0, current density 6.0mA/cm 2 , initial boron concentration 100mg/L and solution temperature 293K. The current density was an important parameter affecting energy consumption too. High current density applied to electrocoagulation cell increased energy consumption. Increasing solution temperature caused to decrease energy consumption that high temperature decreased potential applied under constant current density. That increasing initial boron concentration and dose of supporting electrolyte caused to increase specific conductivity of solution decreased energy consumption. As a result, it was seen that energy consumption for boron removal via electrocoagulation method could be minimized at optimum conditions. An empirical model was predicted by statistically. Experimentally obtained values were fitted with values predicted from empirical model being as following;[ECB]=7.6x10 6 x[OH] 0.11 x[CD] 0.62 x[IBC] -0.57 x[DSE] -0.04 x[T] -2.98 x[t] Unfortunately, the conditions obtained for optimum boron removal were not the conditions obtained for minimum energy consumption. It was determined that support electrolyte must be used for increase boron removal and decrease electrical energy consumption.

PENGARUH PEMBERIAN FeCl3 TERHADAP PERTUMBUHAN Chaetoceros calcitrans

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Cahya Laila Oktaviana Putri

2009-04-01

Full Text Available Besi termasuk unsur yang esensial bagi makhluk hidup. Pada tumbuhan termasuk algae, besi berperan sebagai penyusun sitokrom dan klorofil. Selain itu, besi juga berperan dalam sistem enzim dan transfer elektron pada proses fotosintesis. Namun, belum diketahui konsentrasi yang tepat untuk pengunaannya oleh algae sehingga diperlukan penelitian yang dapat mengetahui konsentrasi pemakaian FeCl3 untuk perkembangan algae terutama untuk C. calcitrans. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian FeCl3 terhadap kepadatan C. calcitran sehingga dapat mengetahui konsentrasi FeCl3 yang paling baik terhadap kepadatan C. calcitran. Serta untuk Mengetahui kepadatan C. calcitran berdasarkan hari. Penelitian ini diawali dengan menyetock C. calcitran hingga kepadatan 400 ribu sel/ml kemudian dilanjutkan dengan mengkultur C. calcitran pada toples yang telah dibuat sama parameternya kecuali pemberian FeCl3 sesuai dengan perlakuan. Untuk menganalisa pengaruh pemberian FeCl3 pada konsentrasi yang bebeda terhadap kepadatan C. calcitrans digunakan analisa sidik ragam (ANOVA dua langkah dengan bantuan software SPSS 12 dan dilakukan uji lanjut Tukey (Multiple Comparisons untuk melihat perlakuan yang berbeda dengan membandingkan berbagai hasil perlakuan. Pada konsentrasi FeCl3 0 mg/l berbeda nyata (P<0,05 sedangkan konsentrai FeCl3 0,02 mg/l, 0,2  mg/l, 2 mg/l berbeda signifikan terhadap kepadatan C. calcitrans sehingga hanya konsentrasi FeCl3 0 mg/l yang mempengaruhi kepadatan C. calcitrans. Ini disebabkan karena pemberian konsentrasi terlalu sedikit dan selisih konsentrasi yang kecil sehingga tidak mempengaruhi kepadatan C. calcitrans. Sedangkan untuk hari  diperoleh hari ke-1 dan ke-7 merupakan hari yang signifikan terhadap kepadatan C. calcitrans.  Kata Kunci : Chaetoceros calcitrans, FeCl3 dan kepadatan

Helium diffusion in irradiated boron carbide

International Nuclear Information System (INIS)

Hollenberg, G.W.

1981-03-01

Boron carbide has been internationally adopted as the neutron absorber material in the control and safety rods of large fast breeder reactors. Its relatively large neutron capture cross section at high neutron energies provides sufficient reactivity worth with a minimum of core space. In addition, the commercial availability of boron carbide makes it attractive from a fabrication standpoint. Instrumented irradiation experiments in EBR-II have provided continuous helium release data on boron carbide at a variety of operating temperatures. Although some microstructural and compositional variations were examined in these experiments most of the boron carbide was prototypic of that used in the Fast Flux Test Facility. The density of the boron carbide pellets was approximately 92% of theoretical. The boron carbide pellets were approximately 1.0 cm in diameter and possessed average grain sizes that varied from 8 to 30 μm. Pellet centerline temperatures were continually measured during the irradiation experiments

Analisa Pengaruh Leadership Style terhadap Firm Performance melalui Learning Organization dan Employee Satisfaction (Studi Kasus pada Perusahaan Sektor Non-manufaktur di Surabaya)

OpenAIRE

Kristanti, Florentina

2014-01-01

Penelitian ini bertujuan untuk mengetahui pengaruh langsung yang signifikan dari leadership style terhadap learning organization, leadership style terhadap employee satisfaction, learning organization terhadap firm performance, employee satisfaction terhadap firm performance, learning organization terhadap employee satisfaction, dan leadership style terhadap firm performance pada Perusahaan non-manufaktur di Surabaya. Penelitian ini berbentuk penelitian kuantitatif, dimana data diperoleh mela...

A quantitative comparison between electrocoagulation and chemical coagulation for boron removal from boron-containing solution

International Nuclear Information System (INIS)

Yilmaz, A. Erdem; Boncukcuoglu, Recep; Kocakerim, M. Muhtar

2007-01-01

This paper provides a quantitative comparison of electrocoagulation and chemical coagulation approaches based on boron removal. Electrocoagulation process delivers the coagulant in situ as the sacrificial anode corrodes, due to a fixed current density, while the simultaneous evolution of hydrogen at the cathode allows for pollutant removal by flotation. By comparison, conventional chemical coagulation typically adds a salt of the coagulant, with settling providing the primary pollutant removal path. Chemical coagulation was carried out via jar tests using aluminum chloride. Comparison was done with the same amount of coagulant between electrocoagulation and chemical coagulation processes. Boron removal obtained was higher with electrocoagulation process. In addition, it was seen that chemical coagulation has any effect for boron removal from boron-containing solution. At optimum conditions (e.g. pH 8.0 and aluminum dose of 7.45 g/L), boron removal efficiencies for electrocoagulation and chemical coagulation were 94.0% and 24.0%, respectively

A quantitative comparison between electrocoagulation and chemical coagulation for boron removal from boron-containing solution

Energy Technology Data Exchange (ETDEWEB)

Yilmaz, A. Erdem [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering, 25240 Erzurum (Turkey)], E-mail: aerdemy@atauni.edu.tr; Boncukcuoglu, Recep [Atatuerk University, Faculty of Engineering, Department of Environmental Engineering, 25240 Erzurum (Turkey); Kocakerim, M. Muhtar [Atatuerk University, Faculty of Engineering, Department of Chemical Engineering, 25240 Erzurum (Turkey)

2007-10-22

This paper provides a quantitative comparison of electrocoagulation and chemical coagulation approaches based on boron removal. Electrocoagulation process delivers the coagulant in situ as the sacrificial anode corrodes, due to a fixed current density, while the simultaneous evolution of hydrogen at the cathode allows for pollutant removal by flotation. By comparison, conventional chemical coagulation typically adds a salt of the coagulant, with settling providing the primary pollutant removal path. Chemical coagulation was carried out via jar tests using aluminum chloride. Comparison was done with the same amount of coagulant between electrocoagulation and chemical coagulation processes. Boron removal obtained was higher with electrocoagulation process. In addition, it was seen that chemical coagulation has any effect for boron removal from boron-containing solution. At optimum conditions (e.g. pH 8.0 and aluminum dose of 7.45 g/L), boron removal efficiencies for electrocoagulation and chemical coagulation were 94.0% and 24.0%, respectively.

Kajian Kritis Terhadap Praanggapan Metafisis-Epistemologis Kosmologi Stephen Hawking

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Sindung Tjahyadi

2008-10-01

Full Text Available Tulisan ini pada dasarnya merupakan kajian filosofis terhadap suatu "kosmologi ilmiah".Dengan demikian terdapat dua pendekatan yang digunakan,yakni,pertama,hampiran filsafatilmu, terkait dengan aspek-aspek metodologis dari kosmologi ilmiah;dan kedua, hampirankosmologi filsafat, terkait dengan evaluasi kritis atas kosmologi Hawking dalam dimensikosmologi filsafati, terutama berkenaan dengan posisi yang diambinya terhadap unsur hakikipembangun realitas dan peran pengkosmos di dalamnya khususnya terkait dengan konsepruang-wakru, prinsip determinisme, dan hukum kekekalan energi.

PENGARUH ELECTRONIC WORD OF MOUTH (eWOM TWITTER @batikair TERHADAP BRAND IMAGE

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Cherry Kartika

2015-05-01

Full Text Available This study aims to determine the influence of the Electronic Word of Mouth twitter @batikair in terms of the following dimensions are intensity dimension to the brand image, valence of opinion dimension to the brand image, and content dimension to the brand image.The sampling technique in this study using purposive sampling technique with criteria from Batik Air passengers in period of June 2015. The data in this study are primary data that collected through questionnaires. Data were analyzed using multiple regression analysis with the classical assumptions.Based on the results of data analysis and discussion, it can be concluded as follows: (1 There is eWOM twitter @batikair influence in terms of intensity dimension to the brand image. (2 There is a eWOM twitter @batikair influence in terms of valence of opinion dimension to the brand image. @batikair. (3 There is a positive eWOM twitter @batikair influence in terms of content dimension to the brand image, it means that the better available information from social network sites relating to products and services will be a positive influence on @batikairbrand image enhancement.   Penelitian ini bertujuan untuk mengetahui pengaruh Electronic Word of Mouth (eWOM twitter @batikair ditinjau dari dimensi-dimensi berikut yaitu dimensi intensity terhadap brand image, dimensi valence of opinion terhadap brand image, dan dimensi content terhadap brand image.Teknik pengambilan sampel pada penelitian ini menggunakan teknik purposive sampling dengan kriteria tertentu yaitu para penumpang Batik Air. Data pada penelitian ini adalah data primer yang dikumpulkan melalui kuesioner. Teknik analisis data menggunakan analisis regresi berganda dengan asumsi klasik.Berdasarkan pada hasil analisis data dan pembahasan maka dapat disimpulkan sebagai berikut: (1 Terdapat pengaruh eWOM twitter @batikair ditinjau dari dimensi intensity terhadap brand imag.e. (2 Terdapat pengaruh eWOM twitter @batikair ditinjau dari dimensi

PENGARUH GAYA KEPEMIMPINAN TERHADAP KINERJA DAN KEPUASAN KERJA KARYAWAN

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Herdiyanti Rise P

2012-05-01

Full Text Available ABSTRAKS   Penelitian ini mengkaji kepemimpinan efektif yang ditinjau dari konsep gaya kepemimpinan yang berorientasi tugas dan karyawan terhadap kinerja dan kepuasan kerja karyawan. Penelitian ini bertujuan untuk : (1 Untuk mengetahui pengaruh yang signifikan antara gaya kepemimpinan yang berorientasi tugas dan karyawan terhadap kinerja karyawan, (2 Untuk mengetahui pengaruh yang signifikan antara gaya kepemimpinan yang berorientasi tugas dan karyawan terhadap kepuasan kerja karyawan, dan (3 Untuk mengetahui pengaruh secara signifikan antara gaya kepemimpinan yang berorientasi tugas terhadap kinerja dan kepuasan kerja karyawan baik secara maupun tidak langsung. Penelitian ini merupakan jenis penelitian survey. Individu sebagai unit analisis terdiri dari para karyawan PT. Semen Gresik (Persero Tbk. dengan jumlah sampel 68 karyawan dari populasi 212  karyawan. Uji hipotesis dilakukan analisis jalur. Hasil penelitian menunjukkan bahwa (1 gaya kepemimpinan yang berorientasi tugas dan karyawan mempunyai pengaruh secara signifikan terhadap kinerja, (2 gaya kepemimpinan yang berorientasi tugas dan karyawan mempunyai pengaruh secara signifikan terhadap kepuasan kerja karyawan, dan (3 gaya kepemimpinan yang berorientasi tugas dan karyawan terhadap kinerja dan kepuasan kerja karyawan. Berdasarkan hasil penelitian tersebut, menunjukkan bahwa gaya kepemimpinan yang berorientasi tugas secara dominan berpengaruh terhadap kinerja dan kepuasan kerja karyawan. Kami menyarankan pihak perusahaan lebih memperhatikan kepentingan karyawan juga untuk mencapai tujuan mereka.   Kata Kunci: Gaya kepemimpinan, kepuasan kerja     ABSTRACTS   The study perceives the effectiveness of leadership  from the effect of leader`s style that orientation task and employee on the employee`s job performance and employee`s job satisfaction. The study aims at : (1 finding out significantly effects of the leader`s style that orientation task and employee on employee`s job

Raman spectroscopy of boron-doped single-layer graphene.

Science.gov (United States)

Kim, Yoong Ahm; Fujisawa, Kazunori; Muramatsu, Hiroyuki; Hayashi, Takuya; Endo, Morinobu; Fujimori, Toshihiko; Kaneko, Katsumi; Terrones, Mauricio; Behrends, Jan; Eckmann, Axel; Casiraghi, Cinzia; Novoselov, Kostya S; Saito, Riichiro; Dresselhaus, Mildred S

2012-07-24

The introduction of foreign atoms, such as nitrogen, into the hexagonal network of an sp(2)-hybridized carbon atom monolayer has been demonstrated and constitutes an effective tool for tailoring the intrinsic properties of graphene. Here, we report that boron atoms can be efficiently substituted for carbon in graphene. Single-layer graphene substitutionally doped with boron was prepared by the mechanical exfoliation of boron-doped graphite. X-ray photoelectron spectroscopy demonstrated that the amount of substitutional boron in graphite was ~0.22 atom %. Raman spectroscopy demonstrated that the boron atoms were spaced 4.76 nm apart in single-layer graphene. The 7-fold higher intensity of the D-band when compared to the G-band was explained by the elastically scattered photoexcited electrons by boron atoms before emitting a phonon. The frequency of the G-band in single-layer substitutionally boron-doped graphene was unchanged, which could be explained by the p-type boron doping (stiffening) counteracting the tensile strain effect of the larger carbon-boron bond length (softening). Boron-doped graphene appears to be a useful tool for engineering the physical and chemical properties of graphene.

Shock Response of Boron Carbide

National Research Council Canada - National Science Library

Dandekar, D. P. (Dattatraya Purushottam)

2001-01-01

.... The present work was undertaken to determine tensile/spall strength of boron carbide under plane shock wave loading and to analyze all available shock compression data on boron carbide materials...

PENGARUH CITRA MEREK DAN PERSEPSI KUALITAS PELAYANAN PELAYANAN TERHADAP KEPUTUSAN PEMBELIAN PADA ONLINE TRAVEL AGENT AIRASIA GO

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Ni Kadek Ayu Marini Sarasdiyanthi

2017-01-01

Full Text Available Airasia Go sedang mengupayakan untuk membentuk citra merek dan persepsi kualitas pelayanan terhadap wisatawan agar dapat mengetahui sejauh mana pengaruh citra merek dan persepsi kualitas pelayanan terhadap keputusan pembelian pada online travel agent Airasia Go tersebut. Tujuannya adalah untuk mengetahui respon wisatawan terhadap citra merek dan persepsi kualitas pelayanan terhadap keputusan pembelian pada produk jasa Airasia Go, mengetahui besarnya pengaruh citra merek dan persepsi kualitas pelayanan secara parsial dan simultan terhadap keputusan pembelian. Metode yang digunakan adalah metode kuantitatif dan kualitatif. Pengambilan sampel menggunakan metode non probability sampling jenis accidental sampling dengan jumlah 110 responden. Untuk analisis data menggunakan teknik analisis berganda, korelasi berganda, analisis determinasi, uji t dan uji F. Dari uji t diperoleh hasil bahwa citra merek dan persepsi kualitas pelayanan berpengaruh positif terhadap keputusan pembelian dengan nilai t hitung 5,685 untuk variabel persepsi kualitas pelayanan dan 6,261 untuk variabel citra merek. Dari uji F diperoleh hasil bahwa citra merek dan persepsi kualitas pelayanan berpengaruh positif dan signifikan terhadap keputusan pembelian dengan nilai Fhitung 119,337.

PENGARUH BOOKS-TAX DIFFERENCES TERHADAP INVESTOR TRADING

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M Khoiru Rusydi

2016-04-01

Full Text Available Abstrak: Pengaruh Books-Tax Differences Terhadap Investor Trading. Penelitian ini bertujuan menguji secara empiris pengaruh pengaruh Books-Tax Differences Terhadap Investor Trading di Indonesia. Penelitian ini merupakan model kuantitatif dengan metode analisa regresi berganda, metode regresi ini di tetapkan pada perusahaan manufaktur yang terdaftar di BEI selama kurun waktu 2010-2012.Hasil penelitian ini menunjukkan Books-Tax Differences berpengaruh negatif terhadap Investor Trading / Trading Volume Activity di Indonesia, yang artinya bahwa semakin besar kesenjangan antara laba akuntansi dan laba fiskal akan mendorong investor untuk tidak melakukan aktivitas perdagangan saham perusahaan tersebut. Abstract: The influence of Books-Tax Differences to Investor Trading. This research aims to examine empirically the influence of Books- Tax Differences to Investor Trading in Indonesia. This research is a quantitative model with multiple regression analysis method, regression method is in charge in companies listed on the Stock Exchange during the period 2010- 2012. The results of this research indicate Books-Tax Differences negatively affect the Investor Trading / Trading Volume Activity in Indonesia, which means that the greater the gap between accounting profit and taxable profit will encourage investors don’t activity the company's stock trading.

Boronization on NSTX using Deuterated Trimethylboron

International Nuclear Information System (INIS)

Blanchard, W.R.; Gernhardt, R.C.; Kugel, H.W.; LaMarche, P.H.

2002-01-01

Boronization on the National Spherical Torus Experiment (NSTX) has proved to be quite beneficial with increases in confinement and density, and decreases in impurities observed in the plasma. The boron has been applied to the interior surfaces of NSTX, about every 2 to 3 weeks of plasma operation, by producing a glow discharge in the vacuum vessel using deuterated trimethylboron (TMB) in a 10% mixture with helium. Special NSTX requirements restricted the selection of the candidate boronization method to the use of deuterated boron compounds. Deuterated TMB met these requirements, but is a hazardous gas and special care in the execution of the boronization process is required. This paper describes the existing GDC, Gas Injection, and Torus Vacuum Pumping System hardware used for this process, the glow discharge process, and the automated control system that allows for remote operation to maximize both the safety and efficacy of applying the boron coating. The administrative requirements and the detailed procedure for the setup, operation and shutdown of the process are also described

Deuterated-decaborane using boronization on JT-60U

Energy Technology Data Exchange (ETDEWEB)

Yagyu, Jun-ichi; Arai, Takashi; Kaminaga, Atsushi; Miyata, Katsuyuki [Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment; Arai, Masaru [Kaihatsu Denki Co., Ltd., Tokyo (Japan)

2001-03-01

In JT-60U, boronization using hydride-decaborane (B{sub 10}H{sub 14}) vaporization has been conducted for the first wall conditioning. Compared to other discharge cleaning (DC), boronization is claimed to be efficient in reduction of oxygen impurities and hydrogen recycling in plasma. However, there are some problems in reduction of hydrogen included in boron film and stabilization of DC glow discharge during the boronization. To solve these problems, a new boronization method using deuterated-decaborane (B{sub 10}D{sub 14}) was adopted instead of the conventional hydride-decaborane. As a result, hydrogen content in the boron film decreased clearly and discharge conditioning shots, for decreasing hydrogen content in plasmas, after the boronization were reduced to 1/10 in comparison to the conventional process. Furthermore, DC glow discharge became stable, with only helium carrier gas, and it was possible to save 30 hours in maximum of the time necessary to boronization. It is shown that the boronization using deuterated-decaborane is very efficient and effective method for the first wall conditioning. (author)

PENGARUH UMUR POHON, BONITA DAN POSISI AKSIAL BATANG TERHADAP STRUKTUR MAKROSKOPIS DAN KUALITAS KAYU JATI SEBAGAI BAHAN FURNITUR (Effect of Tree Age, Site Quality Index and Trunk Axial Position on Macroscopic Structure and Quality of Teak Wood

Directory of Open Access Journals (Sweden)

Yustinus Suranto

2015-03-01

Full Text Available ABSTRAK Penggunaan kayu jati muda merupakan solusi alternatif terhadap terbatasnya ketersediaan bahan baku yang dihadapi oleh industri mebel. Kayu muda cenderung memiliki kayu berkualitas rendah. Salah satu pengukur kualitas kayu adalah sifat struktur makroskopik. Penelitian bertujuan untuk mengetahui pengaruh umur pohon, bonita dan posisi aksial batang terhadap struktur makroskopis kayu dan kualitas kayu. Tiga puluh enam pohon jati muda ditebang dari kawasan hutan KPH Kendal, Provinsi Jawa Tengah. Tiga cakram berketebalan 3 cm diambil dari masing-masing posisi aksial batang, yaitu bagian pangkal, tengah dan ujung. Pengukuran proporsi kayu teras dan dimensi lingkaran tahun dilakukan berdasarkan perbedaan warna alami dan dengan menggunakan lembaran plastik transparan bergambar pola milimeter. Data dianalisis dengan analisis varians dalam rancangan acak lengkap berblok yang disusun secara faktorial. Pengujian lanjutan dilakukan dengan uji HSD Duncan. Kualitas kayu ditentukan dengan analisis determinan berdasarkan kurva normal Z. Hasil penelitian menunjukkan bahwa interaksi tiga faktor tidak berpengaruh terhadap proporsi kayu teras, dan dimensi lingkaran tahun. Interaksi kelas umur dan bonita pengaruh nyata terhadap proporsi kayu teras dan dimensi lingkarah tahun. Posisi aksial batang berpengaruh secara nyata terhadap proporsi kayu teras dan berpengaruh sangat nyata terhadap dimensi lingkaran tahun. Semakin mendekat pada posisi pangkal batang, semakin tinggi proporsi kayu teras dan dimensi lingkaran tahun. Interaksi tiga faktor yaitu kelas umur V, bonita 4 dan posisi tengah batang menghasilkan kualitas kayu tertinggi, yaitu kelas 2, dan interaksi kelas umur V, bonita 3 dan bagian ujung batang menghasilkan kualitas terendah, yaitu kelas 4. Penggunaan kayu berbasis kualitas akan memaksimalkan nilai guna dan meningkatkan umur pakai produk, sehingga mengurangi intensitas penebangan hutan dan lebih ramah lingkungan hidup. ABSTRACT Young teak utilization

PENGARUH TECHNOLOGY READINESS TERHADAP PENERIMAAN TEKNOLOGI KOMPUTER PADA UMKM DI YOGYAKARTA

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Mimin Nur Aisyah

2014-10-01

Full Text Available Abstrak: Pengaruh Technology Readiness terhadap Penerimaan Teknologi Komputer pada UMKM di Yogyakarta. Penelitian ini bertujuan untuk mengekplorasi pengaruh kesiapan teknologi terhadap persepsi kemanfaatan sistem dan persepsi kemudahan penggunaan sistem serta pengaruh kedua persepsi terhadap teknologi tersebut terhadap minat menggunakan teknologi komputer dalam membantu proses bisnis pada UMKM di Yogyakarta.  Sampel penelitian ini sejumlah 498 UMKM yang terdaftar di Disperindagkop Yogyakarta. Teknik pengambilan sampel menggunakan teknik simple random sampling. Data diperoleh menggunakan kuesioner. Analisis data dan uji hipotesis menggunakan model Partial-Least-Square (PLS. Penelitian ini menemukan bahwa terdapat pengaruh kesiapan teknologi terhadap persepsi kemanfaatan sistem dan persepsi kemudahan penggunaan sistem, serta terdapat pengaruh persepsi kemanfaatan teknologi dan persepsi kemudahan penggunaan teknologi terhadap minat menggunakan teknologi komputer dalam membantu proses bisnis pada UMKM di Yogyakarta.   Kata kunci: kesiapan teknologi, persepsi kemanfaatan, persepsi kemudahan penggunaan, minat menggunakan, UMKM Abstract: The Effect of Technology Readiness toward Acceptance of Computer Technology on SMEs in Yogyakarta. This research aims to explore the effect of technology readiness to the perceived of usefulness of system and perceived ease of use of the system and the influence of both perceptions of these technologies to the behavioral intention of computer technology in business processes in SMEs in Yogyakarta. The research sample number of 498 SMEs were registered in Disperindagkop Yogyakarta. The sampling technique using simple random sampling technique. The data were obtained using a questionnaire. Data analysis and hypothesis testing using a model of the Partial-Least-Square (PLS. The research found that there are significant technology readiness to the perception of the benefit system and perceived ease of use of the system

KUALITAS JASA YANG MEMPENGARUHI LOYALITAS DAN RELEVANSINYA TERHADAP KEPUASAN

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Siti Fatona

2010-03-01

Full Text Available Penelitian ini bertujuan untuk mengetahui pengaruh kualitas jasa terhadap loyalitas konsumen melalui kepuasan sebagai variabel mediatornya pada Bank BPR-BKK Karangmalang sragen. Pelanggan merupakan fokus utama yang merasakan kepuasan dari kualitas jasa yang dirasakan. Kepuasan konsumen merupakan faktor dominan dan menentukan dalam mempertahankan perusahaan. Hasil pengujian  menggunakan regresi linear berganda untuk penentuan uji t dan uji F serta pengujian koefisien determinasi. Hasil penelitian model 1 menunjukan bahwa keandalan, daya tanggap, jaminan, empati dan bukti fisik berpengaruh positif terhadap loyalitas konsumen dan untuk model 2 tidak signifikan.  Terdapat pengaruh secara simultan dari keandalan, daya tanggap, jaminan, empati dan bukti fisik terhadap loyalitas konsumen. Sedangkan hasil uji t membuktikan bahwa hanya jaminan dan bukti fisik secara parsial berpengaruh terhadap loyalitas konsumen. Hal ini berarti bahwa keandalan, daya tanggap, jaminan, empati dan bukti fisik  berpengaruh terhadap loyalitas konsumen. This reseach aimed to determine the effect of service quality on customer loyalty through customer satisfaction as a mediating variable in the RB-BKK Bank Karangmalang sragen. Customers are the main focus of satisfaction perceived service quality. Consumer satisfaction is a dominant factor in the determination of the company to maintain. Test results using multiple linear regression to determine the t test and F test. The results show that the model 1 reliability, responsiveness, assurance, empathy and tangibles positive effect on customer loyalty and for model 2 is not significant. There is simultaneous influence of reliability, responsiveness, assurance, empathy and tangibles customer loyalty. While the t-test results prove that the only physical evidence of insurance and partial effect on customer loyalty. This means that the reliability, responsiveness, assurance, empathy and tangibles effect on customer

Pengaruh variasi rasio HAF/SRF terhadap sifat vulkanisat NBR

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Ihda Novia Indrajati

2012-12-01

Full Text Available The objectives of the research were to study the effect of HAF/SRF black ratio and the loading of sulfur on vulcanization characteristic, swelling behaviour and compression set of NBR vulcanizates. The ratio of HAF/SRF were 0/70; 10/60; 20/50; 30/40; 35/35; 40/30; 50/20 and 70/0 phr, respectively. The observation of this research consist of curing characteristic, morphology property and swelling equilibrium. Curing characteristic was determined from cure rate index (CRI, vulcanizates morphology was studied by SEM and swelling equilibrium was conducted by immersion test using benzene. The data were analyzed qualitatively to see the respond of the variable on physical properties. The curing characteristic of double filler vulcanizates was higher than those with single filler. Solvent uptake for double filler present in between to those with HAF or SRF. All of vulcanizates indicate the anomalous mass tranfer, with n>0,5 and constant k showed the same trend. The intrinsic diffusivity (D*, sorption and permeation coefficient showed similar trend and the maximum was obtained by the ratio HAF/SRF 0/70.

Kepemimpinan Pendidikan: Tinjauan terhadap Teori Sifat dan Tingkah-laku

OpenAIRE

Muflihin, Muh. Hizbul

2015-01-01

The substance of education is learning activity. The key of education successfulness is correlation and interaction between teacher and headmaster as top level leader at school. The ability or competence of school leader (headmaster) to develop teacher spirit or other employee is depending on character and ways shown to them. Its mean that good manner and how to treat other team-member has significant effect to his success to implement leadership at school. Education leader, at every level—he...

Kepemimpinan Pendidikan: Tinjauan Terhadap Teori Sifat Dan Tingkah-laku

OpenAIRE

Muflihin, Muh. Hizbul

2008-01-01

The substance of education is learning activity. The key of education successfulness is correlation and interaction between teacher and headmaster as top level leader at school. The ability or competence of school leader (headmaster) to develop teacher spirit or other employee is depending on character and ways shown to them. Its mean that good manner and how to treat other team-member has significant effect to his success to implement leadership at school. Education leader, at every level—he...

PENGARUH PERSEPSI DUKUNGAN ORGANISASI EKSTERNAL DAN INTERNAL MELALUI KOMITMEN KARYAWAN TERHADAP KEBERHASILAN PERUSAHAAN PERBANKAN DI JAWA TIMUR

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J.F.X Susanto Soekiman

2007-01-01

Full Text Available The objectives of this research is to find out these following maters: the influence of perception external organizational support toward perception internal organizational support, the influence of perception external organizational support toward employee commitments, the influence of perception internal organizational support toward employee commitments, the influence of employee commitments toward companies success, the influence of perception external organizational support toward companies success, and the influence of perception internal organizational support toward companies success. This research uses survey and questioners as the tools in collecting data. The data were obtained from 156 consumer of 39 bank in East Java. Data analyzed using the Structural Equation Modeling (SEM with AMOS 4.0 program. The results of the research showed the following results: perception external organizational support has positive and significant effect on perception internal organizational support, perception external organizational support has positive and significant effect on employee commitments, perception internal organizational support has positive and significant effect on employee commitments, employee commitments has positive and significant effect on companies success, perception external organizational support has no significant effect on companies success, and perception internal organizational support has no significant effect on companies success of Banking business especially in East Java. Abstract in Bahasa Indonesia : Tujuan penelitian ini adalah untuk mengetahui pengaruh persepsi dukungan organisasi eksternal terhadap persepsi dukungan organisasi internal, pengaruh persepsi dukungan organisasi eksternal terhadap komitmen karyawan, pengaruh persepsi dukungan organisasi internal terhadap komitmen karyawan, pengaruh komitmen karyawan terhadap keberhasilan perusahaan, pengaruh persepsi dukungan organisasi eksternal terhadap keberhasilan

Technology of boron-containing polyphosphate fertilizer 'Phosphobor'

International Nuclear Information System (INIS)

Aldabergenov, M.K.; Balakaeva, T.G.

1995-01-01

A technology is developed for producing 'Phosphobor' fertilizer based on the rock phosphate weal (17-18% P 2 O 5 ) with additions of boron-magnesium compound. Boron is part of polyphosphate fertilizer in the form of polymeric compounds of phosphorus and boron. Phosphorus and boron copolymers -boratophosphates - are easily formed in the process of polyphosphate fertilizers production, since borates undergo a mutual polycondensation reaction with phosphates. 8 refs., 1 fig

ISOBORDAT: An Online Data Base on Boron Isotopes

Energy Technology Data Exchange (ETDEWEB)

Pennisi, M.; Adorni-Braccesi, A.; Andreani, D.; Gori, L.; Gonfiantini, R. [Istituto di Geoscienze e Georisorse, CNR, Pisa (Italy); Sciuto, P. F. [Servizio Geologico, Sismico e dei Suoli, D.G. Ambiente e Difesa del Suolo e della Costa, Regione Emilia Romagna, Bologna (Italy)

2013-07-15

From 1986, boron isotope data in natural substances increased sharply in scientific publications. Analytical difficulties derived from complex geochemical matrices have been faced and interlaboratory calibrations reported in the boron literature. Boron isotopes are nowdays applied to investigate boron origin and migration in natural waters, sources of boron contamination, water-rock interactions and also contribute to water resource management. This is especially important in those areas where boron content exceeds the local regulations for drinking water supply and boron sources need to be identified. ISOBORDAT, an interactive database on boron isotope composition and content in natural waters is presented to the wider community of boron isotope users. The database's structure, scope and applications are reported, along with a discussion on {delta}{sup 11}B values obtained in Italian waters. In the database boron data are structured in the following categories: rainwater, rivers, lakes, groundwater and potential contaminants. New categories (medium and high enthalpy fluids from volcanic and geothermal areas) are anticipated. ISOBORDAT aims to be as interactive as possible and will be developed taking into account information and suggestions received. The database is continually undergoing revision to keep pace with continuous data publication. Indications of data that are missing at present are greatly appreciated. (author)

ANALISIS TERHADAP PELAKSANAAN EUTHANASIA PASIF

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Umi Enggarsasi

1997-07-01

Full Text Available Dalam KUHP tidak satu pasal pun yang menjelaskan batasan atau pengertian euthanasia. Namun demikian, pengenaan terhadap euthanasia dianalogikan dengan delik-delik yang tercantum dalam pasal 338, 340, 344 KUHP. Dengan dasar itulah maka pelaksanaan euthanasia dilarang. Larangan euthanasia pasif tidak pernah efektif karena kematian sebagai akibat ketidakmampuan ilmu dan teknologi kedokteran, dipandang sebagai kematian alamiah, sedangkan terhadap kematian alamiah tentu saja tidak ditahan-tahan atau dilarang hukum pidana maupun kode etik kedokteran. Hukum pidana dan kode etik kedokteran, tidak mewajibkan dokter untuk mengobati pasien di Iuar batas kemampuan ilmu dan teknologi kedokteran. berdasarkan penerapan karakteristik delik omisionis terbukti bahwa, larangan euthanasia pasif tidak memenuhi kriteria untuk diterapkan sebagai perbuatan pidana. Dalam hal terjadinya euthanasia pasif, walaupun dokter melakukan perbuatan positif, secara logika, kematian pasien tidak dapat dihindari. Dengan demikian sulit untuk dibuktikan adanya hubungan kausal antara akibat yang dilarang timbulnya dengan kelakuan negatif dokter.

Boron-isotope fractionation in plants

Energy Technology Data Exchange (ETDEWEB)

Marentes, E [Univ. of Guelph, Dept. of Horticultural Science, Guelph, Ontario (Canada); Vanderpool, R A [USDA/ARS Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota (United States); Shelp, B J [Univ. of Guelph, Dept. of Horticultural Science, Guelph, Ontario (Canada)

1997-10-15

Naturally-occurring variations in the abundance of stable isotopes of carbon, nitrogen, oxygen, and other elements in plants have been reported and are now used to understand various physiological processes in plants. Boron (B) isotopic variation in several plant species have been documented, but no determination as to whether plants fractionate the stable isotopes of boron, {sup 11}B and {sup 10}B, has been made. Here, we report that plants with differing B requirements (wheat, corn and broccoli) fractionated boron. The whole plant was enriched in {sup 11}B relative to the nutrient solution, and the leaves were enriched in {sup 10}B and the stem in {sup 11}B relative to the xylem sap. Although at present, a mechanistic role for boron in plants is uncertain, potential fractionating mechanisms are discussed. (author)

Boron-isotope fractionation in plants

International Nuclear Information System (INIS)

Marentes, E.; Vanderpool, R.A.; Shelp, B.J.

1997-01-01

Naturally-occurring variations in the abundance of stable isotopes of carbon, nitrogen, oxygen, and other elements in plants have been reported and are now used to understand various physiological processes in plants. Boron (B) isotopic variation in several plant species have been documented, but no determination as to whether plants fractionate the stable isotopes of boron, 11 B and 10 B, has been made. Here, we report that plants with differing B requirements (wheat, corn and broccoli) fractionated boron. The whole plant was enriched in 11 B relative to the nutrient solution, and the leaves were enriched in 10 B and the stem in 11 B relative to the xylem sap. Although at present, a mechanistic role for boron in plants is uncertain, potential fractionating mechanisms are discussed. (author)

Dukungan Target Group Terhadap Zoning Regulation

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Susi Ridhawati

2014-05-01

Full Text Available Kegiatan pembangunan yang diwarnai oleh market driven akan menyebabkan kerusakan lingkungan. Apabila terjadi secara terus-menerus, bisa mengakibatkan penurunan kualitas lingkungan hidup. Oleh karena itu penataan ruang (spatial planning menjadi aspek yang amat penting agar ruang yang terbatas dapat digunakan secara efisien dengan tetap memelihara kelestarian dan daya dukung lingkungan hidup. Proses invasi dan urban sprawl sebagai akibat dari keterbatasan ruang perkotaan telah merembet ke sebagian daerah di Kabupaten Sleman, terutama di wilayah Kecamatan Mlati. Perkembangan wilayah di daerah ini perlu mendapatkan perhatian khusus agar di kemudian hari tidak menjadi unmanaged growth. Untuk menjaga kelestarian alam dan mengurangi dampak kerusakan lingkungan yang bisa berakibat terhadap terganggunya sistem ekologi wilayah sekitar Kabupaten Sleman, Badan Pengendalian Pertanahan Daerah (BPPD Kabupaten Sleman melakukan pengendalian atas perubahan penggunaan tanah melalui sosialisasi atas kebijakan pertanahan yang telah ditetapkan Pemerintah Kabupaten Sleman. BPPD memasang/membuat papan informasi/baliho pada tempat strategis, sehingga dapat dibaca dengan mudah oleh masyarakat. Salah satu baliho dipasang di kawasan pertanian di Jalan Sendari-Gombang, Tirtoadi, Kecamatan Mlati. Berkenaan dengan hal di atas, penelitian ini bertujuan untuk menilai sikap target grup terhadap zoning regulations dengan studi kasus di Jalan Sendari Gombang Tirtoadi, Kecamatan Mlati. Penelitian juga ingin mengungkap faktor-faktor yang memengaruhi dukungan target grup terhadap implementasi zoning regulations di Kecamatan Mlati, terutama di Jalan Sendari-Gombang, Tirtoadi. Penelitian menggunakan pendekatan deskriptif naturalistik dengan metode studi kasus.

XPS analysis of boron doped heterofullerenes

Energy Technology Data Exchange (ETDEWEB)

Schnyder, B; Koetz, R [Paul Scherrer Inst. (PSI), Villigen (Switzerland); Muhr, H J; Nesper, R [ETH Zurich, Zurich (Switzerland)

1997-06-01

Boron heterofullerenes were generated through arc-evaporation of doped graphite rods in a helium atmosphere. According to mass spectrometric analysis only mono-substituted fullerenes like C{sub 59}B, C{sub 69}B and higher homologues together with a large fraction of higher undoped fullerenes were extracted and enriched when pyridine was used as the solvent. XPS analysis of the extracts indicated the presence of two boron species with significantly different binding energies. One peak was assigned to borid acid. The second one corresponds to boron in the fullerene cage, which is mainly C{sub 59}B, according to the mass spectrum. This boron is in a somewhat higher oxidation state than that of ordinary boron-carbon compounds. The reported synthesis and extraction procedure opens a viable route for production of macroscopic amounts of these compounds. (author) 2 figs., 1 tab., 7 refs.

RESTRUKTURISASI MENIR MENJADI BERAS BERKALSIUM TINGGI DENGAN METODE EKSTRUSI Restructured Fine Grain Rice to High Calcium Rice by Extrusion Method

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Chatarina Wariyah

2012-05-01

. Permasalahannya adalah sifat fisik dan inderawi  serta kualitastanak beras ditentukan oleh binder (bahan pengikat yang digunakan. Tujuan penelitian ini adalah menghasilkan berashasil ekstrusi atau beras ultra berkalsium tinggi dengan sifat fisik, inderawi dan kualitas tanak seperti beras biasa. Se-cara khusus tujuannya adalah mengevaluasi pengaruh jenis dan jumlah binder (gluten dan tapioka terhadap sifat-sifatberas ultra, menentukan jenis dan jumlah binder yang tepat agar dihasilkan beras ultra dengan sifat fisik dan kualitastanak yang disukai. Hasil penelitian menunjukkan bahwa beras ultra berkalsium tinggi yang dibuat dengan bindertapioka memiliki warna, tekstur dan sifat inderawi seperti beras biasa. Secara khusus kesimpulannya adalah jenis dan jumlah binder kurang berpengaruh terhadap tekstur beras maupun nasi beras ultra, namun dibandingkan beras IR-64 tekstur beras ultra cenderung lebih keras, akan tetapi nasinya lebih lunak. Sedangkan warna beras ultra dengan binder tapioka hampir sama dengan beras IR-64, sedang dengan gluten agak kekuningan. Kualitas tanak beras ultra kurang baik dibandingkan beras IR-64. Beras ultra yang paling disukai adalah yang dibuat dengan binder tapioka 4 %. Beras tersebut memiliki karakteristik kekerasan 140,43N, deformasi 63,70 %,  warna dengan nilai L: 71,08, b: 11,00 dan a:-0,27 dengan kualitas tanak cukup baik.

Fine-tuning the nucleophilic reactivities of boron ate complexes derived from aryl and heteroaryl boronic esters.

Science.gov (United States)

Berionni, Guillaume; Leonov, Artem I; Mayer, Peter; Ofial, Armin R; Mayr, Herbert

2015-02-23

Boron ate complexes derived from thienyl and furyl boronic esters and aryllithium compounds have been isolated and characterized by X-ray crystallography. Products and mechanisms of their reactions with carbenium and iminium ions have been analyzed. Kinetics of these reactions were monitored by UV/Vis spectroscopy, and the influence of the aryl substituents, the diol ligands (pinacol, ethylene glycol, neopentyl glycol, catechol), and the counterions on the nucleophilic reactivity of the boron ate complexes were examined. A Hammett correlation confirmed the polar nature of their reactions with benzhydrylium ions, and the correlation lg k(20 °C)=sN (E+N) was employed to determine the nucleophilicities of the boron ate complexes and to compare them with those of other borates and boronates. The neopentyl and ethylene glycol derivatives were found to be 10(4) times more reactive than the pinacol and catechol derivatives. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Analisa Pengaruh Corporate Social Responsibility Terhadap Brand Image Dan Customer Loyalty Di Pop! Hotels Indonesia

OpenAIRE

Livia, Astrid; Gladys, Gladys

2017-01-01

Penelitian ini dilakukan untuk menganalisa pengaruh CSR terhadap brand image dan customer loyalty pada Pop! Hotels di Indonesia. Penelitian ini menggunakan pendekatan kuantitatif kausal dengan bantuan penyebaran kuesioner yang dibagikan kepada 200 responden yang pernah menginap di Pop! Hotels di Indonesia. Hasil penelitian menunjukkan bahwa CSR berpengaruh positif dan signifikan terhadap brand image dan customer loyalty. Selain itu CSR juga berpengaruh secara tidak langsung terhadap customer ...

Sifat Fisik Pati Ganyong (Canna edulis Kerr. Termodifikasi dan Penambahan Gum Xanthan untuk Rerotian (Physical Characteristics of Modified Canna edulis Kerr. Starch and Gum Xanthan for Bakeries

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Parwiyanti Parwiyanti

2016-12-01

dengan uji BNJ (α = 0,05. Parameter yang diamati swelling power (SP, indeks kelarutan dalam air (IKA, indeks absobsi air (IAA, derajat pengembangan (DP, dan densitas kamba (DK pati ganyong termodifikasi. Hasil penelitian menunjukkan bahwa modifikasi pati ganyong dengan kombinasi perlakuan suhu dan waktu HMT serta konsentrasi GX menghasilkan pati termodifikasi dengan sifat fisik yang berbeda nyata antar perlakuan maupun pati alaminya.  Modifikasi pati ganyong dengan HMT pada suhu 80 °C, waktu 8 jam, kadar air pati 15 % dan konsentrasi gum xanthan 1 % dapat menghasilkan pati ganyong yang sifat fisiknya mendekati tepung terigu kadar protein sedang dan berbeda dengan pati ganyong alami. Sifat fisik pati ganyong termodifikasi tersebut adalah SP 16,90 ± 0,48 g/g, IKA 10,28 ± 0,25 %, IAA 112,58 ± 0,38 %, DP 0,94 ± 0,11 mL/g, dan DK 0,73 ± 0,026 g/mL. Kata kunci: Pati ganyong; gum xanthan; HMT; modifikasi; sifat fisik

Penelitian pengaruh penambahan karet reclaim terhadap sifat- sifat kuat tarik, kemuluran dan volume terkikis kompon karet

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Prayitno Prayitno

1990-12-01

Full Text Available Reprocessed of wastevulcanized rubber products, known as reclaim rubber, is used as a filler in rubber soles. Uncorrect usage of reclaim rubber in rubber sole manufacturing can decrease the product performance such as as tensile streangth, elongation break and abrasion resistance. In this experiment, by comparison of 30, 40, 50, 60 and 70 parts of reclaim rubber to the 100 part of natural rubber (RSS sow that tensile strength decreased to 174.138, 160.118, 140.574, 134.092, and 449,60, 437.20, 426.00, 403.80 and 396.60% nrespectively, whereas abrasion resistance decreased to 0,2491, 0,4781, 0,5267, 0.7909, and mm3 / kgm respectively.

Proceedings of workshop on 'boron science and boron neutron capture therapy'

Energy Technology Data Exchange (ETDEWEB)

Kitaoka, Y. [ed.

1998-12-01

This volume contains the abstracts and programs of the 8th (1996), 9th (1997) and 10th (1998) of the workshop on 'the Boron Science and Boron Neutron Capture Therapy' and the recent progress reports especially subscribed. The 11 of the presented papers are indexed individually. (J.P.N.)

Pengaruh Kompetensi Pedagogik dan Kompetensi Profesional Guru terhadap Economic Literacy melalui Prestasi Belajar Siswa Kelas XII IPS di SMA Kota Malang

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Denik Wulandari

2013-10-01

Full Text Available Tujuan penelitian ini untuk menguji pengaruh (1 kompetensi pedagogik guru terhadap economic literacy melalui prestasi belajar siswa, (2 kompetensi profesional guru terhadap economic literacy melalui prestasi belajar siswa. Penelitian dilakukan terhadap siswa kelas XII IPS di SMA RSBI se-Kota Malang pada tahun 2012, data diperoleh dari angket, tes, dan dokumentasi. Hasil pene-litian: (1 kompetensi pedagogik guru berpengaruh positif signifikan terhadap economic literacy; (2 kompetensi pedagogik guru berpengaruh positif signifikan terhadap prestasi belajar; (3 prestasi belajar berpengaruh positif signifikan terhadap economic literacy; (4 kompetensi profesional guru berpengaruh positif signifikan terhadap economic literacy; dan (5 kompetensi profesional guru berpengaruh positif signifikan terhadap prestasi belajar. Berdasarkan hasil penelitian tersebut secara keseluruhan dapat diketahui bahwa kompetensi pedagogik dan kompetensi profesional guru dapat mempengaruhi economic literacy siswa melalui prestasi belajar siswa. Kata kunci: kompetensi pedagogik, kompetensi profesional, prestasi belajar, economic literacy

Hubungan Multitasking Teknologi Informasi Terhadap Produktivitas Kerja (Studi Kasus: Mahasiswa ITS

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Galang Arga Marendha

2017-01-01

Full Text Available Pada era globalisasi saat ini cara hidup individu umumnya para remaja dan dewasa yang selalu bergerak cepat dalam mendapatkan informasi terbaru agar tidak tertinggal dari yang lain memungkinkan melakukan pekerjaan secara bersamaan. Mayoritas dari individu-individu menganggap melakukan banyak pekerjaan sekaligus dapat digunakan sebagai solusi yang tepat. Dengan kemajuan teknologi saat ini dan perilaku seperti itu, banyak sekali contoh pekerjaan yang dilakukan secara bersama-sama seperti halnya mengirim e-mail saat sedang menonton televisi maupun membuat laporan saat rapat. Teknologi informasi tersebut merupakan komponen yang mendukung peningkatan produktivitas kerja. Dalam hasil dari penelitian ini didapatkan perbandingan antara skenario 1 dengan 2 dan skenario 1 dengan 3 berpengaruh terhadap produktivitas kerja karena adanya penambahan tugas me-resume video dan mengerjakan 10 soal matematika, sedangkan perbandingan skenario 2 dengan skenario 3 didapatkan dari hasil wawancara terhadap responden bahwa tidak adanya pengaruh pada produktivitas kerja dikarenakan penambahan tugas me-resume video skenario 2 lebih sulit dari tugas me-resume video skenario 3 serta penambahan 10 soal matematika tidak menjadi masalah dalam pengerjaan skenario 3. Dalam hasil hubungan multitasking teknologi informasi skenario 1 didapatkan hasil 33,1% terhadap produktivitas kerja, kemudian hubungan multitasking teknologi informasi skenario 2 didapatkan hasil 23,6% terhadap produktivitas kerja, dan hubungan multitasking teknologi informasi skenario 3 didapatkan hasil 24,8% terhadap produktivitas kerja. Sehingga dari pengerjaan skenario 2 dan 3 produktivitas kerja responden menurun dikarenakan adanya tambahan kuantitas pengerjaan.

Synthesis of borophenes: Anisotropic, two-dimensional boron polymorphs

Energy Technology Data Exchange (ETDEWEB)

Mannix, A. J.; Zhou, X. -F.; Kiraly, B.; Wood, J. D.; Alducin, D.; Myers, B. D.; Liu, X.; Fisher, B. L.; Santiago, U.; Guest, J. R.; Yacaman, M. J.; Ponce, A.; Oganov, A. R.; Hersam, M. C.; Guisinger, N. P.

2015-12-17

At the atomic-cluster scale, pure boron is markedly similar to carbon, forming simple planar molecules and cage-like fullerenes. Theoretical studies predict that two-dimensional (2D) boron sheets will adopt an atomic configuration similar to that of boron atomic clusters. We synthesized atomically thin, crystalline 2D boron sheets (i.e., borophene) on silver surfaces under ultrahigh-vacuum conditions. Atomic-scale characterization, supported by theoretical calculations, revealed structures reminiscent of fused boron clusters with multiple scales of anisotropic, out-of-plane buckling. Unlike bulk boron allotropes, borophene shows metallic characteristics that are consistent with predictions of a highly anisotropic, 2D metal.

Persepsi Masyarakat terhadap Kinerja Camat dalam Meningkatkan Mutu Pendidikan

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Margaretta D. Sitanggang

2014-06-01

Full Text Available Penelitian ini menggunakan Metode Deskriptif dengan jumlah populasi adalah seluruh anggota kepala keluarga yang ada di Lingkungan V Kecamatan Deli Tua Kabupaten Deli Serdang yang berjumlah 380 kepala keluarga. Maka sampel yang diambil adalah 15% dari jumlah populasi dengan jumlah 57 kepala keluarga. Teknik pengumpulan data yang digunakan penulis dalam penelitian ini adalah melalui observasi, angket dan wawancara. Adapun teknik analisis data yang digunakan dalam penelitian ini menggunakan statistik sederhana (persentase. Dari hasil penelitian pada tabel-tabel penelitian, dapat disimpulkan yakni pendapat responden terhadap pemerintah kecamatan adalah bahwa pemerintah kecamatan telah menjalankan tugasnya dengan baik. Hal ini terbukti dengan adanya perhatian pemerintah kecamatan dalam meningkatkan mutu pendidikan yaitu dengan meninjau dan menyelidiki secara langsung ke sekolah-sekolah penyaluran dana BOS (Bantuan Operasional Sekolah, menyediakan sarana dan prasarana pendidikan seperti: tas, seragam sekolah, buku dan sepatu serta melakukan observasi terhadap kuantitas dan kualitas guru. Jadi, persepsi masyarakat terhadap kinerja pemerintah kecamatan dalam meningkatkan mutu pendidikan di Lingkungan V Kecamatan Deli Tua sudah cukup baik.

Innovative boron nitride-doped propellants

Directory of Open Access Journals (Sweden)

Thelma Manning

2016-04-01

Full Text Available The U.S. military has a need for more powerful propellants with balanced/stoichiometric amounts of fuel and oxidants. However, balanced and more powerful propellants lead to accelerated gun barrel erosion and markedly shortened useful barrel life. Boron nitride (BN is an interesting potential additive for propellants that could reduce gun wear effects in advanced propellants (US patent pending 2015-026P. Hexagonal boron nitride is a good lubricant that can provide wear resistance and lower flame temperatures for gun barrels. Further, boron can dope steel, which drastically improves its strength and wear resistance, and can block the formation of softer carbides. A scalable synthesis method for producing boron nitride nano-particles that can be readily dispersed into propellants has been developed. Even dispersion of the nano-particles in a double-base propellant has been demonstrated using a solvent-based processing approach. Stability of a composite propellant with the BN additive was verified. In this paper, results from propellant testing of boron nitride nano-composite propellants are presented, including closed bomb and wear and erosion testing. Detailed characterization of the erosion tester substrates before and after firing was obtained by electron microscopy, inductively coupled plasma and x-ray photoelectron spectroscopy. This promising boron nitride additive shows the ability to improve gun wear and erosion resistance without any destabilizing effects to the propellant. Potential applications could include less erosive propellants in propellant ammunition for large, medium and small diameter fire arms.

Boron isotopic enrichment by displacement chromatography

International Nuclear Information System (INIS)

Mohapatra, K.K.; Bose, Arun

2014-01-01

10 B enriched boron is used in applications requiring high volumetric neutron absorption (absorption cross section- 3837 barn for thermal and 1 barn for 1 MeV fast neutron). It is used in fast breeder reactor (as control rod material), in neutron counter, in Boron Neutron Capture Therapy etc. Owing to very small separation factor, boron isotopic enrichment is a complex process requiring large number of separation stages. Heavy Water Board has ventured in industrial scale production of 10 B enriched boron using Exchange Distillation Process as well as Ion Displacement Chromatography Process. Ion Displacement Chromatography process is used in Boron Enrichment Plant at HWP, Manuguru. It is based on isotopic exchange between borate ions (B(OH) 4 - ) on anion exchange resin and boric acid passing through resin. The isotopic exchange takes place due to difference in zero point energy of 10 B and 11 B

Pengaruh Penerapan E-filing, Tingkat Pemahaman Perpajakan dan Kesadaran Wajib Pajak terhadap Kepatuhan Wajib Pajak di Kpp Pratama YOGYAKARTA

OpenAIRE

Agustiningsih, Wulandari; Isroah, Isroah

2016-01-01

Penelitian ini bertujuan untuk mengetahui (1) Pengaruh penerapan e-filing terhadap kepatuhan wajib pajak. (2) Pengaruh tingkat pemahaman perpajakan terhadap kepatuhan wajib pajak. (3) Pengaruh kesadaran wajib pajak terhadap kepatuhan wajib pajak. (4) Pengaruh penerapan e-filing, tingkat pemahaman perpajakan dan kesadaran wajib pajak terhadap kepatuhan wajib pajak. Populasi penelitian ini adalah Wajib Pajak pengguna e-filing di KPP Pratama Yogyakarta deng...

A critical assessment of boron target compounds for boron neutron capture therapy.

Science.gov (United States)

Hawthorne, M Frederick; Lee, Mark W

2003-01-01

Boron neutron capture therapy (BNCT) has undergone dramatic developments since its inception by Locher in 1936 and the development of nuclear energy during World War II. The ensuing Cold War spawned the entirely new field of polyhedral borane chemistry, rapid advances in nuclear reactor technology and a corresponding increase in the number to reactors potentially available for BNCT. This effort has been largely oriented toward the eradication of glioblastoma multiforme (GBM) and melanoma with reduced interest in other types of malignancies. The design and synthesis of boron-10 target compounds needed for BNCT was not channeled to those types of compounds specifically required for GBM or melanoma. Consequently, a number of potentially useful boron agents are known which have not been biologically evaluated beyond a cursory examination and only three boron-10 enriched target species are approved for human use following their Investigational New Drug classification by the US Food and Drug Administration; BSH, BPA and GB-10. All ongoing clinical trials with GBM and melanoma are necessarily conducted with one of these three species and most often with BPA. The further development of BNCT is presently stalled by the absence of strong support for advanced compound evaluation and compound discovery driven by recent advances in biology and chemistry. A rigorous demonstration of BNCT efficacy surpassing that of currently available protocols has yet to be achieved. This article discusses the past history of compound development, contemporary problems such as compound classification and those problems which impede future advances. The latter include means for biological evaluation of new (and existing) boron target candidates at all stages of their development and the large-scale synthesis of boron target species for clinical trials and beyond. The future of BNCT is bright if latitude is given to the choice of clinical disease to be treated and if a recognized study

PENGARUH KEPEMIMPINAN DAN KOMUNIKASI GURU TERHADAP MOTIVASI BELAJAR

Directory of Open Access Journals (Sweden)

- Husin

2011-06-01

Full Text Available Permasalahan dalam penelitian ini adalah seberapa besar pengaruh kepemimpinan dan komunikasi guru terhadap motivasi belajar siswa. Populasi dalam penelitian ini adalah seluruh siswa kelas XII jurusan Administrasi Perkantoran yang terdiri dari 77 siswa. Berdasarkan hasil penelitian menunjukkan bahwa ada pengaruh yang positif pada kepemimpinan guru dan komunikasi guru terhadap motivasi belajar siswa. Dalam upaya meningkatkan motivasi belajar siwa hendaknya kepemimpinan guru diterapkan pada siswa sehingga guru dapat membimbing dan mendorong siswa untuk lebih giat belajar, guru diharapkan dapat meningkatkan kemampuan komunikasinya agar pada saat penyampaian materi dapat diterima siwa dengan baik. Kata Kunci : Motivasi Belajar, Kepemimpinan Guru, Komunikasi Guru

KARAKTERISTIK BATUBARA DAN PENGARUHNYA TERHADAP PROSES PENCAIRAN

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Harli Talla

2014-12-01

Full Text Available Tujuan penelitian ini adalah mempelajari pengaruh karakteristik batubara terhadap proses pencairan dengan menggunakan metoda hidrogenasi katalitik. Sampel batubara yang digunakan adalah batubara Sorong dengan peringkat lignit dan batubara Mulia dengan peringkat sub bituminus. Proses pencairan dilakukan dalam sebuah otoklaf yang berkapasitas 5 liter dengan menggunakan pelarut antrasen dan katalis bijih besi. Kisaran suhu pencairan adalah 375ºC, 400ºC, 425ºC, dan 450ºC, sementara tekanan awal hidrogen ditetapkan 100 bar. Hasil yang diperoleh menunjukan bahwa karakteristik batubara memiliki pengaruh yang signifikan terhadap pencairan. Konversi tertinggi batubara Sorong adalah 89,94% pada suhu 400ºC, sementara untuk batubara Mulia sebesar 87,28% pada suhu 450ºC

Pengaruh Brand Image Dan Brand Trust Terhadap Keputusan Pembelian Sepatu Converse

OpenAIRE

Adiwidjaja, Adrian Junio

2017-01-01

Brand image dan brand trust merupakan faktor yang dapat mempengaruhi keputusan pembelian konsumen. Brand image yang baik akan memberikan dampak positif bagi Perusahaan yang akhirnya akan memberikan keuntungan bagi Perusahaan melalui peningkatan pembelian konsumen karena adanya brand trust dari konsumen terhadap produk. Penelitian ini bertujuan untuk mengetahui ada atau tidaknya pengaruh brand image dan brand trust terhadap keputusan pembelian sepatu Converse.Jenis penelit...

Analisis Pengaruh Eco-Label terhadap Kesadaran Konsumen untuk Membeli Green Product

OpenAIRE

Muslim, Erlinda; Indriani, Dyah Rusty

2014-01-01

. Pandangan manusia telah bergeser seiring dengan meningkatnya kepedulian terhadap lingkungan, sehingga menimbulkan tuntutan bagi pelaku bisnis untuk memberikan solusi dalam menghadapi berbagai permasalahan lingkungan melalui pengembangan green product. Eco-label sebagai jaminan mutu green product merupakan isu di dunia bisnis dan perdagangan global saat ini. Tujuan penelitian ini adalah menerapkan Structural Equation Modeling (SEM) untuk mengetahui pengaruh eco-label terhadap kesadaran kons...

PENGARUH SOCIAL MEDIA MARKETING TERHADAP TINGKAT KUNJUNGAN COFFEE TOFFEE DI MAKASSAR

OpenAIRE

PASSAWUNG, ALIQUE LA

2014-01-01

2014 Pengaruh Social Media Marketing Terhadap Tingkat Kunjungan Coffee Toffee Di Makassar The Effect of Social Media Marketing on Rate of The Visit Coffee Toffee at Makassar Alique La Passawung Abd.Rahman Kadir Mukhtar Penelitian ini membahas pengaruh social media marketing terhadap tingkat kunjungan Coffee Toffee di Makassar. Data yang digunakan dalam penelitian ini adalah data primer yang diperoleh dari kuesioner. ...

Pengaruh Awareness, Daya Tarik Iklan Terhadap Brand Attitude Indomie Kota Tangsel

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Roby Irzal Maulana

2018-04-01

Full Text Available Penelitian ini memiliki tujuan untuk menjelaskan bagaimana peran pemediasian brand awareness pada pengaruh daya tarik iklan terhadap brand attitude mi instan Indomie di Kota Tangerang Selatan. Populasi yang digunakan merupakan konsumen Indomie di Kota Tangerang Selatan Banten. Sampel ditentukan dengan metode purposive sampling berjumlah 200 responden. Data dikumpulkan melalui kuesioner dan dianalisis menggunakan teknik analasis jalur dan uji sobel. Hasil penelitian menunjukkan bahwa daya tarik iklan dan brand awareness masing-masing berpengaruh positif secara signifikan terhadap brand attitude serta adanya peran mediasi dari brand awareness yang memperkuat hubungan daya tarik iklan dan brand attitude.Disarankan bagi manajemen Indomie untuk lebih memperkuat daya tarik dalam iklannya sehingga sikap positif konsumen terhadap merek Indomie dapat dipertahankan melalui tingkat kesadaran merek yang tinggi.

LAW ENFORCEMENT ON TAXATION THROUGH NON LITIGATION MECHANISM (AN ALTERNATIVE

Directory of Open Access Journals (Sweden)

Zainal Muttaqin

2015-10-01

Full Text Available The Attorney General can discontinue the investigation to the default tax obligor together with the imposition of four times of outstanding fines. That are raises the issues concerning the nature of the crimes of the tax obligor. This happens because with the payment of the tax debt, the loss suffered by the state as the element of crime, the crimes seemed to be inexistence. This research was an empirical-juridical one. The aim of the research was to find a model of legal enforcement in tax matters without the court involvement. Jaksa Agung dapat menghentikan penyidikan terhadap wajib pajak apabila wajib pajak tersebut membayar pajak yang terutang beserta denda 4 (empat kali jumlah pajak yang tidak/kurang dibayar. Hal tersebut menimbulkan persoalan mengenai akibat hukumnya terhadap sifat perbuatan pidana yang dilakukan wajib pajak mengingat dengan pelunasan pajak tersebut, kerugian negara sebagai unsur tindak pidana tidak terjadi. Penelitian ini merupakan penelitian yuridis empiris dengan tujuan menemukan model penegakan hukum di bidang pajak tanpa melalui proses pengadilan.

The effect of boron deficiency on gene expression and boron compartmentalization in sugarbeet

Science.gov (United States)

NIP5, BOR1, NIP6, and WRKY6 genes were investigated for their role in boron deficiency in sugar beet, each with a proposed role in boron use in model plant species. All genes showed evidence of polymorphism in fragment size and gene expression in the target genomic DNA and cDNA libraries, with no co...

ICP-MS determination of boron: method optimization during preparation of graphite reference material for boron

International Nuclear Information System (INIS)

Granthali, S.K.; Shailaja, P.P.; Mainsha, V.; Venkatesh, K.; Kallola, K.S.; Sanjukta, A.K.

2017-01-01

Graphite finds widespread use in nuclear reactors as moderator, reflector, and fuel fabricating components because of its thermal stability and integrity. The manufacturing process consists of various mixing, moulding and baking operations followed by heat-treatment between 2500 °C and 3000 °C. The high temperature treatment is required to drive the amorphous carbon-to-graphite phase transformation. Since synthetic graphite is processed at high temperature, impurity concentrations in the precursor carbon get significantly reduced due to volatilization. However boron may might partly gets converted into boron carbide at high temperatures in the carbon environment of graphite and remains stable (B_4C: boiling point 3500 °C) in the matrix. Literature survey reveals the use of various methods for determination of boron. Previously we have developed a method for determination of boron in graphite electrodes using inductively coupled plasma mass spectrometry (ICP-MS). The method involves removal of graphite matrix by ignition of the sample at 800°C in presence of saturated barium hydroxide solution to prevent the loss of boron. Here we are reporting a modification in the method by using calcium carbonate in place of barium hydroxide and using beryllium (Be) as an internal standard, which resulted in a better precession. The method was validated by spike recovery experiments as well as using another technique viz. Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). The modified method was applied in evaluation of boron concentration in the graphite reference material prepared

Karakterisasi Serbuk Hasil Produksi Menggunakan Metode Atomisasi

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M. Halim Asiri

2015-07-01

Full Text Available Abstrak : Metalurgi serbuk (powder metallurgy,yaitu merupakan teknologi produksi logam dengan bahan dasar Aluminum dengan unsur lain Ti,Mn,Mg,Si,sebagai unsur penguat sebelum diproses pencairan terlebidahulu melakukan pengujian sifat mekanik antara lain uji struktur makro dan mikro kemudianuji kekerasan (hardness tes, uji kekuatan (tensile strength. Setelah selesai diadakan pengujian sifat-sifat mekanik terhadap logam dasar, maka proses selanjutnya mencairkan logam dasar denganmelalui dapur peleburan (fornaices dengan temperature panas sekitar 1200 s/d 1350? dan titik cair logam aluminum 650?. Setelah mencair kemudian di holding time selama 20 menit selanjutnya pembuatan proses granulasi (pembutiran dengan menggunakan sistim Atomisasi Air (water atomization dengan menggunakan variasi tekanan penyemprotan sebesar 20 s/d 25 Psi, dengan debit 4 l/s,variasi waktu yg digunakan 6 s/d 8 detik. Hasil dari proses sistim metode Atomisasi ini kita dapatkan macam-macam karakteristik bentuk butiran mulai dari Mesh 8 (2360????m,mesh 16 (1180????m, mesh 30(600????m, mesh 50(300????????,mesh 100 (150????m,mesh 200 (75????m. Untuk mengetahui data-data ini melalui pengamatan dengan menggunakan mikroskop makro dan mikro.Selanjutnya bisa juga melakukan pengujian dengan menggunakan alat uji SEM dan X – Ray (XRD.Kata kunci: uji sifat – sifat mekanik, sifat bahan, komposisi kimia dan porositas (civitis Abstract : Powder metallurgy (powder metallurgy, which is a production technology with basic materialsAluminum metal with other elements Ti, Mn, Mg, Si, as a reinforcement agent before beingprocessed casting prior testing of mechanical properties among others, macro and micro structuraltest then hardness test, test of strength. After completion of the testing of mechanical properties ofthe base metal, then the next process with the base metal melt through the furnace with atemperature of about 1200 s / d in 1350 and the melting point of aluminum is 650C. After melt

Chemistry and technology of boron and its compounds

International Nuclear Information System (INIS)

Zhigach, A.F.; Parfenov, B.P.; Svitsyn, R.A.

1995-01-01

The results of research dealing with development of technologies of boron trichloride, boron hydride, aminoderivative boron hydrides, metal borohydrides, carboranes, carborane-containing polymers, carried out at the institute of organoelemental compounds, are presented. Physicochemical properties of the compounds have been studied and analytical methods have been developed. Data on toxicity and fire hazard of boron compounds are provided

Insights into the Mechanisms Underlying Boron Homeostasis in Plants

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Akira Yoshinari

2017-11-01

Full Text Available Boron is an essential element for plants but is toxic in excess. Therefore, plants must adapt to both limiting and excess boron conditions for normal growth. Boron transport in plants is primarily based on three transport mechanisms across the plasma membrane: passive diffusion of boric acid, facilitated diffusion of boric acid via channels, and export of borate anion via transporters. Under boron -limiting conditions, boric acid channels and borate exporters function in the uptake and translocation of boron to support growth of various plant species. In Arabidopsis thaliana, NIP5;1 and BOR1 are located in the plasma membrane and polarized toward soil and stele, respectively, in various root cells, for efficient transport of boron from the soil to the stele. Importantly, sufficient levels of boron induce downregulation of NIP5;1 and BOR1 through mRNA degradation and proteolysis through endocytosis, respectively. In addition, borate exporters, such as Arabidopsis BOR4 and barley Bot1, function in boron exclusion from tissues and cells under conditions of excess boron. Thus, plants actively regulate intracellular localization and abundance of transport proteins to maintain boron homeostasis. In this review, the physiological roles and regulatory mechanisms of intracellular localization and abundance of boron transport proteins are discussed.

Pengaruh Service Quality, Perceived Value, Customer Satisfaction Terhadap Repurchase Intention Pelanggan Di Resto Buro Bar Surabaya

OpenAIRE

Hong, Briandy

2015-01-01

Purpose: Penelitian ini bertujuan untuk menjelaskan pengaruh service quality terhadap perceived value, pengaruh perceived value terhadap customer satisfaction dan pengaruh customer satisfaction terhadap repurchase intention.Design/methodologi approach: Desain penelitian adalah kausal, dengan satu variabel bebas, yaitu: service quality (X), sedangkan variabel terikat meliputi tiga variabel, yaitu: perceived value (Y1), customer satisfaction (Y2), dan repurchase intention (Y3). Pe...

New Icosahedral Boron Carbide Semiconductors

Science.gov (United States)

Echeverria Mora, Elena Maria

Novel semiconductor boron carbide films and boron carbide films doped with aromatic compounds have been investigated and characterized. Most of these semiconductors were formed by plasma enhanced chemical vapor deposition. The aromatic compound additives used, in this thesis, were pyridine (Py), aniline, and diaminobenzene (DAB). As one of the key parameters for semiconducting device functionality is the metal contact and, therefore, the chemical interactions or band bending that may occur at the metal/semiconductor interface, X-ray photoemission spectroscopy has been used to investigate the interaction of gold (Au) with these novel boron carbide-based semiconductors. Both n- and p-type films have been tested and pure boron carbide devices are compared to those containing aromatic compounds. The results show that boron carbide seems to behave differently from other semiconductors, opening a way for new analysis and approaches in device's functionality. By studying the electrical and optical properties of these films, it has been found that samples containing the aromatic compound exhibit an improvement in the electron-hole separation and charge extraction, as well as a decrease in the band gap. The hole carrier lifetimes for each sample were extracted from the capacitance-voltage, C(V), and current-voltage, I(V), curves. Additionally, devices, with boron carbide with the addition of pyridine, exhibited better collection of neutron capture generated pulses at ZERO applied bias, compared to the pure boron carbide samples. This is consistent with the longer carrier lifetimes estimated for these films. The I-V curves, as a function of external magnetic field, of the pure boron carbide films and films containing DAB demonstrate that significant room temperature negative magneto-resistance (> 100% for pure samples, and > 50% for samples containing DAB) is possible in the resulting dielectric thin films. Inclusion of DAB is not essential for significant negative magneto

Enrichment of boron 10

International Nuclear Information System (INIS)

Coutinho, C.M.M.; Rodrigues Filho, J.S.R.; Umeda, K.; Echternacht, M.V.

1990-01-01

A isotopic separation pilot plant with five ion exchange columns interconnected in series were designed and built in the IEN. The columns are charged with a strong anionic resin in its alkaline form. The boric acid solution is introduced in the separation columns until it reaches a absorbing zone length which is sufficient to obtain the desired boron-10 isotopic concentration. The boric acid absorbing zone movement is provided by the injection of a diluted hydrochloric acid solution, which replace the boric acid throughout the columns. The absorbing zone equilibrium length is proportional to its total length. The enriched boron-10 and the depleted boron are located in the final boundary and in the initial position of the absorbing zones, respectively. (author)

PENGARUH PERSONALIZATION, COMPUTER SELF EFFICACY, DAN TRUST TERHADAP PERCEIVED USEFULLNESS PADA PENGGUNA INTERNET BANKING DI PT. BANK BRI (Persero, Tbk. CABANG MADIUN

Directory of Open Access Journals (Sweden)

Yoyok Sugiantoro

2015-04-01

Full Text Available Penelitian ini bertujuan untuk mengetahui pengaruh personalization terhadap perceived usefulness, pengaruh computer self efficacy terhadap perceived usefulness, pengaruh trust terhadap perceived usefulness, dan pengaruh secara simultan personalization, computer self efficacy, dan trust terhadap perceived usefulness. Populasi dalam penelitian ini adalah semua nasabah pengguna internet banking di Bank BRI KCP Dolopo Madiun hingga akhir bulan Mei 2014, yaitu sejumlah 157 orang. Pengambilan sampel menggunakan sampling jenuh sehingga jumlah sampel penelitian ini sebanyak 157 orang. Penelitian ini menggunakan metode analisis regresi linier berganda. Hasil penelitian ini menunjukkan bahwa variabel personalization berpengaruh terhadap perceived usefulness, variabel computer self efficacy berpengaruh terhadap perceived usefulness, variabel trust berpengaruh terhadap perceived usefulness, serta variabel personalization, computer self efficacy, dan trust secara simultan berpengaruh terhadap perceived usefulness pada pengguna layanan internet banking di PT. Bank BRI (Persero, Tbk Cabang Madiun.

Analysis of boron nitride by flame spectrometry methods

International Nuclear Information System (INIS)

Telegin, G.F.; Chapysheva, G.Ya.; Shilkina, N.N.

1989-01-01

A rapid method has been developed for determination of free and total boron contents as well as trace impurities in boron nitride by using autoclave sample decomposition followed by atomic emission and atomic absorption determination. The relative standard deviation is not greater than 0.03 in the determination of free boron 0.012 in the determination of total boron content

Structure prediction of boron-doped graphene by machine learning

Science.gov (United States)

M. Dieb, Thaer; Hou, Zhufeng; Tsuda, Koji

2018-06-01

Heteroatom doping has endowed graphene with manifold aspects of material properties and boosted its applications. The atomic structure determination of doped graphene is vital to understand its material properties. Motivated by the recently synthesized boron-doped graphene with relatively high concentration, here we employ machine learning methods to search the most stable structures of doped boron atoms in graphene, in conjunction with the atomistic simulations. From the determined stable structures, we find that in the free-standing pristine graphene, the doped boron atoms energetically prefer to substitute for the carbon atoms at different sublattice sites and that the para configuration of boron-boron pair is dominant in the cases of high boron concentrations. The boron doping can increase the work function of graphene by 0.7 eV for a boron content higher than 3.1%.

Discharge cleaning on TFTR after boronization

International Nuclear Information System (INIS)

Mueller, D.; Dylla, H.F.; LaMarche, P.H.; Bell, M.G.; Blanchard, W.; Bush, C.E.; Gentile, C.; Hawryluk, R.J.; HIll, K.W.; Janos, A.C.; Jobes, F.C; Owens, D.K.; Pearson, G.; Schivell, J.; Ulrickson, M.A.; Vannoy, C.; Wong, K.L.

1991-05-01

At the beginning of the 1990 TFTR experimental run, after replacement of POCO-AXF-5Q graphite tiles on the midplane of the bumper limiter by carbon fiber composite (CFC) tiles and prior to any Pulse Discharge Cleaning (PDC), boronization was performed. Boronization is the deposition of a layer of boron and carbon on the vacuum vessel inner surface by a glow discharge in a diborane, methane and helium mixture. The amount of discharge cleaning required after boronization was substantially reduced compared to that which was needed after previous openings when boronization was not done. Previously, after a major shutdown, about 10 5 low current (∼20 kA) Taylor Discharge Cleaning (TDC) pulses were required before high current (∼400 kA) aggressive Pulse Discharge Cleaning (PDC) pulses could be performed successfully. Aggressive PDC is used to heat the limiters from the vessel bakeout temperature of 150 degrees C to 250 degrees C for a period of several hours. Heating the limiters is important to increase the rate at which water is removed from the carbon limiter tiles. After boronization, the number of required TDC pulses was reduced to <5000. The number of aggressive PDC pulses required was approximately unchanged. 14 refs., 1 tab

Superplastic boronizing of duplex stainless steel under dual compression method

International Nuclear Information System (INIS)

Jauhari, I.; Yusof, H.A.M.; Saidan, R.

2011-01-01

Highlights: → Superplastic boronizing. → Dual compression method has been developed. → Hard boride layer. → Bulk deformation was significantly thicker the boronized layer. → New data on boronizing could be expanded the application of DSS in industries. - Abstract: In this work, SPB of duplex stainless steel (DSS) under compression method is studied with the objective to produce ultra hard and thick boronized layer using minimal amount of boron powder and at a much faster boronizing time as compared to the conventional process. SPB is conducted under dual compression methods. In the first method DSS is boronized using a minimal amount of boron powder under a fix pre-strained compression condition throughout the process. The compression strain is controlled in such a way that plastic deformation is restricted at the surface asperities of the substrate in contact with the boron powder. In the second method, the boronized specimen taken from the first mode is compressed superplastically up to a certain compressive strain under a certain strain rate condition. The process in the second method is conducted without the present of boron powder. As compared with the conventional boronizing process, through this SPB under dual compression methods, a much harder and thicker boronized layer thickness is able to be produced using a minimal amount of boron powder.

Superplastic boronizing of duplex stainless steel under dual compression method

Energy Technology Data Exchange (ETDEWEB)

Jauhari, I., E-mail: iswadi@um.edu.my [Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur (Malaysia); Yusof, H.A.M.; Saidan, R. [Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2011-10-25

Highlights: {yields} Superplastic boronizing. {yields} Dual compression method has been developed. {yields} Hard boride layer. {yields} Bulk deformation was significantly thicker the boronized layer. {yields} New data on boronizing could be expanded the application of DSS in industries. - Abstract: In this work, SPB of duplex stainless steel (DSS) under compression method is studied with the objective to produce ultra hard and thick boronized layer using minimal amount of boron powder and at a much faster boronizing time as compared to the conventional process. SPB is conducted under dual compression methods. In the first method DSS is boronized using a minimal amount of boron powder under a fix pre-strained compression condition throughout the process. The compression strain is controlled in such a way that plastic deformation is restricted at the surface asperities of the substrate in contact with the boron powder. In the second method, the boronized specimen taken from the first mode is compressed superplastically up to a certain compressive strain under a certain strain rate condition. The process in the second method is conducted without the present of boron powder. As compared with the conventional boronizing process, through this SPB under dual compression methods, a much harder and thicker boronized layer thickness is able to be produced using a minimal amount of boron powder.

STUDI KEBIJAKAN DEVIDEN: ANTESEDEN DAN DAMPAKNYA TERHADAP HARGA SAHAM

Directory of Open Access Journals (Sweden)

Werner R. Murhadi

2008-01-01

ownership to dividend policy found by result which do not support agency theory. Life Cycle theory in this research is obtained by result which is research confirmation before all, where there are influence of cycle step of company life to dividend policy. Abstract in Bahasa Indonesia : Penelitian ini bertujuan untuk menguji teori signaling deviden pada kondisi pasar modal di Indonesia. Teori signalling menyataan bahwa kebijakan deviden memiliki kandungan informasi, sehingga hal ini dapat berpengaruh terhadap harga saham. Pengujian teori signalling ini berkaitan dengan fenomena penelitian di manca negara yang menunjukkan bahwa secara persentase terjadi penurunan perusahaan yang membayarkan deviden. Penelitian ini juga melakukan pengujian teori keagenan. Dalam penelitian ini teori keagenan dipergunakan untuk menguji pengaruh: (1 Aliran Kas Bebas terhadap harga saham, (2 Struktur Kepemilikan terhadap harga saham, dan (3 Struktur kepemilikan terhadap kebijakan deviden. Penelitian ini juga menguji teori daur hidup, dengan melihat pengaruh tahapan daur hidup perusahaan terhadap kebijakan deviden. Perusahaan yang masuk dalam tahap pertumbuhan cenderung untuk tidak membagikan deviden, dibandingkan dengan perusahaan pada tahapan matang. Penelitian ini menggunakan pendekatan kuantitatif dengan menggunakan metode path analysis. Penelitian ini menggunakan sampel berupa perusahaan yang membagikan deviden untuk periode 1995-2005 yang terdaftar di PT Bursa Efek Jakarta. Jumlah sampel yang digunakan dalam penelitian ini adalah sebesar 1052 tahun observasi. Dalam penelitian ini juga dilakukan uji sensitifitas dengan memperlebar waktu even dari 1 hari pada model utama, menjadi 5 dan 10 hari. Selain itu uji sensitifitas juga dilakukan dengan mengganti pendekatan market model menjadi mean adjusted model dalam menentukan expected return. Temuan penelitian menunjukkan bahwa teori signalling masih relevan dalam mempengaruhi pergerakan harga saham. Selain itu, temuan penelitian juga menunjukkan

PENGARUH KOMUNIKASI, KOORDINASI, USAHA DAN KESETARAAN KONTRIBUSI TERHADAP EFEKTIVITAS AUDIT INTERNAL PEMERINTAH

OpenAIRE

GUSRAYANTI KARTA, RIA

2017-01-01

2017 ABSTRAK Pengaruh Komunikasi, Koordinasi, Usaha dan Kesetaraan Kontribusi terhadap Efektivitas Audit Internal Pemerintah Effect of Communication, Coordination, Effort and Balance of Member Contribution to Government Internal Audit Effectiveness Ria Gusrayanti Karta Darwis Said Ishak Amsari Penelitian ini bertujuan untuk menguji dan menganalisis pengaruh komunikasi, koordinasi, usaha dan kesetaraan kontribusi terhadap efektivitas audit internal...

Investigation of Hard Boron Rich Solids: Osmium Diboride and β-Rhombohedral Boron

Science.gov (United States)

Hebbache, M.; Živković, D.

Recently, we succeeded in synthesizing three osmium borides, i.e., OsB1.1, Os2B3 and OsB2. Up to date, almost nothing is known about the physical properties of these materials. Microhardness measurements show that OsB2 is extremely hard. Ab initio calculations show that it is due to formation of covalent bonds between boron atoms. OsB2 is also a low compressibility material. It can be used for hard coatings. The β-rhombohedral polymorph of boron is the second hardest elemental crystal (H ≈ 33 GPa). It is also very light and a p-type semiconductor. In early 1970s, it has been shown that the doping of boron with 3d transition elements enhances its hardness by about 25%. We predict that, in general, heavily doped samples MBx, with x ≤ 31 or equivalently a dopant concentration larger than 3.2 at.%, should be ultrahard, i.e., H > 43 GPa. The relevant dopants M are Al, Cu, Sc, Mn, Mg and Li. In addition to these properties, boron-rich materials have a very low volatility, a high chemical inertness and high melting point. They are suitable for applications under extreme conditions and thermoelectric equipment.

INDUSTRI PENGOLAHAN HASIL PERTANIAN PANGAN DAN HUBUNGANNYA TERHADAP PEREKONOMIAN DESA

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Soekadri Soekadri

2016-10-01

Full Text Available ABSTRAK Aktivitas industri yang berkembang dan terkait dengan perekonomian perdesaan di DAS Progo sampai dewasa ini masih merupakan suatu harapan. Hal ini karena sektor industri manufaktur dianggap memiliki kemampuan besar dalam memecahkan masalah berkaitan dengan aspek pendapatan, kesempatan kerja maupun penyerapan tenaga kerja, tetapi kenyataannya di berbagai tempat kemampuannya masih disangsikan karena berbagai sebab. Kesenjangan ini mendasari penelitian yang bertujuan untuk (1 memahami karakteristik faktor-faktor produksi dan faktor lokasi industri, serta pengaruhnya terhadap perkembangan Industri Hasil Pertanian Pangan (IHP; (2 mengkaji efek pelipatgandaan aktifitas IHP terhadap penyerapan tenaga kerja, dan peluang usaha; (3 dan mengkaji hubungan antara kebijaksanaan pembangunan industri oleh pemerintah, khususnya pembinaan usaha terhadap perkembangan IHP di daerah penelitian. Metode yang digunakan adalah survei terhadap pengusaha IHP. Lokasi desa yang dipilih sebagai sampel kasus desa penelitian ditentukan secara purposive sampling, yaitu Desa Trimurti Kabupaten Bantul Propinsi Daerah Istimewa Yogyakarta, Desa Banyuraden Kabupaten Sleman Daerah Istimewa Yogyakarta, dan Desa Sumurarum Kabupaten Magelang Propinsi Jawa Tengah. Responden adalah petani sekaligus pengusaha IHP, dengan jumlah sampel masing-masing desa 40 KK petani pengusaha IHP ditentukan dengan cara kuota. Analisis data menggunakan uji koefisien korelasi parsial dan ganda serta uji Kendall’s tau-b. Hasil penelitian menunjukkan pada dasarnya ekonomi IHP di ketiga desa kasus penelitian dapat berkembang, ditunjukkan oleh adanya perkembangan kesempatan usaha, dan kesempatan kerja, dan juga berpengaruhnya terhadap perkembangan perekonomian desa-desa tersebut. Hal ini disebabkan oleh faktor kebijakan pemerintah yang sangat berpengaruh terhadap perkembangan proses produksi IHP. Perkecualian terjadi di Desa Banyuraden karena lokasinya dekat Kota Yogyakarta, dimana pengaruh faktor

Separation process for boron isotopes

Energy Technology Data Exchange (ETDEWEB)

Rockwood, S D

1975-06-12

The method according to the invention is characterized by the steps of preparing a gaseous mixture of BCl/sub 3/ containing the isotopes of boron and oxygen as the extractor, irradiating that mixture in the tube of the separator device by means of P- or R-lines of a CO/sub 2/ laser for exciting the molecules containing a given isotope of boron, simultaneously irradiating the mixture with UV for photodissociating the excited BCl/sub 3/ molecules and separating BCl/sub 3/ from the reaction products of photodissociation and from oxygen. Such method is suitable for preparing boron used in nuclear reactors.

Pengaruh Nilai Tukar Terhadap Ekspor Dan Dampaknya Terhadap Pertumbuhan Ekonomi Indonesia [The Effect of Exchange Rates on Exports and its Impact on Indonesia's Economic Growth

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Annaria Magdalena Marpaung

2017-09-01

Full Text Available Indonesia's export policy has been promoted since 1983. Since then, exports have been a concern in spurring economic growth along with the changing industrialization strategy from the emphasis on import substitution industry to the export promotion industry. In line with the 2017 economic growth target of 5.4%, the study on exports is interesting to examine given that exports are one of the factors driving Indonesia's economic growth. The objectives of the study were to analyze the effect of exchange rate on exports and their impact on Indonesia's economic growth. The data analysis was done by path analysis, using historical data from 1970 to 2015. The results showed: (a The exchange rate (Rp/USD partially has a positive and significant influence on the export volume of Indonesia, with a total influence of 71.57%,( b Partial export changes have a positive and significant impact on economic growth Indonesia, with a total influence of 65.29%, (c Partial exchange rates have a positive but insignificant effect on economic growth in Indonesia, with a total influence of 1.19% and (d Changes in exchange rates and export changes have a positive effect on the economic growth of Indonesia, with direct effect of 77.38% and indirect effect of 6.36% and both exogenous variables have an effect of 71.02% on the economic growth of Indonesia. Bahasa Indonesia Abstrak:  Pengutamaan ekspor Indonesia sudah digalakkan sejak tahun 1983. Sejak saat itu, ekspor menjadi perhatian dalam memacu pertumbuhan ekonomi seiring dengan berubahnya strategi industrialisasi dari penekanan pada industri substitusi impor ke industri promosi ekspor. Sejalan dengan target pertumbuhan ekonomi tahun 2017 sebesar 5,4%, maka kajian tentang ekspor menarik untuk diteliti, dimana ekspor merupakan salah satu faktor yang mendorong pertumbuhan ekonomi. Perilaku ekspor dipengaruhi oleh kurs. Tujuan penelitian adalah untuk menganalisis pengaruh nilai tukar terhadap ekspor dan dampaknya terhadap

DAMPAK PERMAINAN BOWLING TIRUAN TERHADAP KECAKAPAN MOTORIK ANAK TERBELAKANG MENTAL USIA DINI

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Suparno -

2014-06-01

Abstrak: Dampak Permainan Bowling Tiruan terhadap Keterampilan Motorik Anak Terbelakang Mental Usia Dini. Penelitian ini bertujuan untuk memperoleh gambaran mengenai dampak permainan dengan aturan bowling tiruan terhadap peningkatan kecakapan koordinasi motorik anak terbelakang mental usia dini. Sebanyak enam anak yang mengalami keterbelakangan mental berusia 5-7 tahun, terdiri atas empat laki-laki dan dua wanita di TKLB/C Pembina Yogyakarta yang diambil secara purposive dijadikan subjek. Penelitian ini merupakan penelitian kuasi eksperimen dengan rancangan pretes-postes satu kelompok. Observasi terbuka dan rekaman video digunakan untuk melihat kecakapan koordinasi motorik subjek. Hasil penelitian menunjukkan adanya dampak positif permainan dengan aturan berupa bowling tiruan terhadap peningkatan kecakapan koordinasi motorik anak terbelakang mental usia dini.

Density separation of boron particles. Final report

International Nuclear Information System (INIS)

Smith, R.M.

1980-04-01

A density distribution much broader than expected was observed in lots of natural boron powder supplied by two different sources. The material in both lots was found to have a rhombohedral crystal structure, and the only other parameters which seemed to account for such a distribution were impurities within the crystal structure and varying isotopic ratios. A separation technique was established to isolate boron particles in narrow densty ranges. The isolated fractions were subsequently analyzed for B 10 and total boron content in an effort to determine whether selective isotopic enrichment and nonhomogeneous impurity distribution were the causes for the broad density distribution of the boron powders. It was found that although the B 10 content remained nearly constant around 18%, the total boron content varied from 37.5 to 98.7%. One of the lots also was found to contain an apparently high level of alpha rhombohedral boron which broadened the density distribution considerably. During this work, a capability for removing boron particles containing gross amounts of impurities and, thereby, improving the overall purity of the remaining material was developed. In addition, the separation technique used in this study apparently isolated particles with alpha and beta rhombohedral crystal structures, although the only supporting evidence is density data

Boron dose determination for BNCT using Fricke and EPR dosimetry

International Nuclear Information System (INIS)

Wielopolski, L.; Ciesielski, B.

1995-01-01

In Boron Neutron Capture Therapy (BNCT) the dominant dose delivered to the tumor is due to α and 7 Li charged particles resulting from a neutron capture by 10 B and is referred to herein as the boron dose. Boron dose is directly attributable to the following two independent factors, one boron concentration and the neutron capture energy dependent cross section of boron, and two the energy spectrum of the neutrons that interact with boron. The neutron energy distribution at a given point is dictated by the incident neutron energy distribution, the depth in tissue, geometrical factors such as beam size and patient's dimensions. To account for these factors can be accommodated by using Monte Carlo theoretical simulations. However, in conventional experimental BNCT dosimetry, e.g., using TLDs or ionization chambers, it is only possible to estimate the boron dose. To overcome some of the limitations in the conventional dosimetry, modifications in ferrous sulfate dosimetry (Fricke) and Electron Paramagnetic Resonance (EPR) dosimetry in alanine, enable to measure specifically boron dose in a mixed gamma neutron radiation fields. The boron dose, in either of the dosimeters, is obtained as a difference between measurements with boronated and unboronated dosimeters. Since boron participates directly in the measurements, the boron dosimetry reflects the true contribution, integral of the neutron energy spectrum with boron cross section, of the boron dose to the total dose. Both methods are well established and used extensively in dosimetry, they are presented briefly here

Folate Functionalized Boron Nitride Nanotubes and their Selective Uptake by Glioblastoma Multiforme Cells: Implications for their Use as Boron Carriers in Clinical Boron Neutron Capture Therapy.

Science.gov (United States)

Ciofani, Gianni; Raffa, Vittoria; Menciassi, Arianna; Cuschieri, Alfred

2008-11-25

Boron neutron capture therapy (BNCT) is increasingly being used in the treatment of several aggressive cancers, including cerebral glioblastoma multiforme. The main requirement for this therapy is selective targeting of tumor cells by sufficient quantities of (10)B atoms required for their capture/irradiation with low-energy thermal neutrons. The low content of boron targeting species in glioblastoma multiforme accounts for the difficulty in selective targeting of this very malignant cerebral tumor by this radiation modality. In the present study, we have used for the first time boron nitride nanotubes as carriers of boron atoms to overcome this problem and enhance the selective targeting and ablative efficacy of BNCT for these tumors. Following their dispersion in aqueous solution by noncovalent coating with biocompatible poly-l-lysine solutions, boron nitride nanotubes were functionalized with a fluorescent probe (quantum dots) to enable their tracking and with folic acid as selective tumor targeting ligand. Initial in vitro studies have confirmed substantive and selective uptake of these nanovectors by glioblastoma multiforme cells, an observation which confirms their potential clinical application for BNCT therapy for these malignant cerebral tumors.

Folate Functionalized Boron Nitride Nanotubes and their Selective Uptake by Glioblastoma Multiforme Cells: Implications for their Use as Boron Carriers in Clinical Boron Neutron Capture Therapy

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Ciofani Gianni

2008-01-01

Full Text Available Abstract Boron neutron capture therapy (BNCT is increasingly being used in the treatment of several aggressive cancers, including cerebral glioblastoma multiforme. The main requirement for this therapy is selective targeting of tumor cells by sufficient quantities of10B atoms required for their capture/irradiation with low-energy thermal neutrons. The low content of boron targeting species in glioblastoma multiforme accounts for the difficulty in selective targeting of this very malignant cerebral tumor by this radiation modality. In the present study, we have used for the first time boron nitride nanotubes as carriers of boron atoms to overcome this problem and enhance the selective targeting and ablative efficacy of BNCT for these tumors. Following their dispersion in aqueous solution by noncovalent coating with biocompatible poly-l-lysine solutions, boron nitride nanotubes were functionalized with a fluorescent probe (quantum dots to enable their tracking and with folic acid as selective tumor targeting ligand. Initial in vitro studies have confirmed substantive and selective uptake of these nanovectors by glioblastoma multiforme cells, an observation which confirms their potential clinical application for BNCT therapy for these malignant cerebral tumors.

Development of magnetic resonance technology for noninvasive boron quantification

International Nuclear Information System (INIS)

Bradshaw, K.M.

1990-11-01

Boron magnetic resonance imaging (MRI) and spectroscopy (MRS) were developed in support of the noninvasive boron quantification task of the Idaho National Engineering Laboratory (INEL) Power Burst Facility/Boron Neutron Capture Therapy (PBF/BNCT) program. The hardware and software described in this report are modifications specific to a GE Signa trademark MRI system, release 3.X and are necessary for boron magnetic resonance operation. The technology developed in this task has been applied to obtaining animal pharmacokinetic data of boron compounds (drug time response) and the in-vivo localization of boron in animal tissue noninvasively. 9 refs., 21 figs

Synthesis and characterization of ammonium phosphate fertilizers with boron

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ANGELA MAGDA

2010-07-01

Full Text Available The concentration of boron, an essential micronutrient for plants, presents a narrow range between deficiency and toxicity. In order to provide the boron requirement for plants, and to avoid toxicity problems, boron compounds are mixed with basic fertilizers. Sodium borate pentahydrate was used as a boron source. Ammonium orthophosphates fertilizers with boron were prepared by neutralizing phosphoric acid with ammonia and addition of variable amounts of sodium tetraborate pentahydrate to the reaction mixture at a NH3:H3PO4 molar ratio of 1.5. The fertilizers obtained with boron contents ranging from 0.05 to 1 % (w/w were fully characterized by chemical analysis, thermal analysis, X-ray diffraction and infrared spectrophotometry. The studies showed that up to 500 °C, regardless of the boron content, no significant changes concerning thermal stability and nutritional properties occurred. Above 500 °C, an increase of thermal stability with an increase of the boron content was observed. X-Ray diffraction of a heat-treated sample containing 5 % (w/w boron indicated the appearance of boron orthophosphate, BPO4, as a new crystalline phase, and the disappearance of the previous structures above 500 °C, which explains the increase in thermal stability.

Combined Effects of Boron and NaCl on Wheat Seedlings

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ZHEN Mei-nan

2015-08-01

Full Text Available To investigate the combined effects of boron(Band NaCl on the growth of wheat, a pot experiment was conducted using wheat (Triticum aestivum Linn.seedlings. Boron concentrations of culture medium were set as 0, 50 mg·kg-1 and 100 mg·kg-1, and NaCl concentrations were 0, 1 g·kg-1 and 2 g·kg-1. The results showed that both boron and NaCl could significantly inhibit wheat growth. At 50 mg B·kg-1, NaCl aggravated growth inhibition caused by boron. At 100 mg B·kg-1, however, NaCl alleviated the inhibition caused by boron. The combined stress of boron and NaCl significantly increased the root to shoot ratio of wheat. NaCl inhibited the uptake of boron by wheat. It suggests that under severe boron stress, NaCl is able to alleviate boron toxicity in wheat by increasing root to shoot ratio and reducing boron uptake.

Study of ceramic mixed boron element as a neutron shielding

International Nuclear Information System (INIS)

Ismail Mustapha; Mohd Reusmaazran Yusof; Md Fakarudin Ab Rahman; Nor Paiza Mohamad Hasan; Samihah Mustaffha; Yusof Abdullah; Mohamad Rabaie Shari; Airwan Affandi Mahmood; Nurliyana Abdullah; Hearie Hassan

2012-01-01

Shielding upon radiation should not be underestimated as it can causes hazard to health. Precautions on the released of radioactive materials should be well concerned and considered. Therefore, the combination of ceramic and boron make them very useful for shielding purpose in areas of low and intermediate neutron. A six grades of ceramic tile have been produced namely IMN05 - 5 % boron, IMN06 - 6 % boron, IMN07 - 7 % boron, IMN08 - 8 % boron, IMN09 - 9 % boron, IMN10 - 10 % boron from mixing, press and sintered process. Boron is a material that capable of absorbing and capturing neutron, so that neutron and gamma test were conducted to analyze the effectiveness of boron material in combination with ceramic as shielding. From the finding, percent reduction number of count per minute shows the ceramic tiles are capable to capture neutron. Apart from all the percentage of boron used, 10 % is the most effective shields since the percent reduction indicating greater neutron captured increased. (author)

KARAKTERISTIK SIFAT FISIK KAYU JABON(Anthocephalus cadamba Miq PADA ARAH LONGITUDINAL DAN RADIAL

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Ary Widiyanto

2017-06-01

Full Text Available This study aims to investigate the characteristics of the physical properties of jabon (Anthocephalus cadambaMiq. wood and its variations in the stem longitudinaland radial direction. A total of 3samplesof jabontrees were taken from private forest in Talagawangi Village, Pakenjeng sub-District, Garut District, West Java Province. Speciments of physical properties were taken at 3 different heightsof the longitudinal direction(bottom, midle and top of trunkas well as 3 differentradialdirections (near pith, middle and near barkof the jabontrunk. The observation focused on the physical properties in three position of both longitudinal and radial orientation. The parameters observed were green wood moisture content(GMC, air-driedmoisture content (ADMC, specific gravity on green wood moisture volume (SGG, and specific gravity on air-dried moisture volume (SGAD. Result showed that the average of GMC and ADMC of jabon wood were 118,43% and 15.36% respectively, while SGG and SGAD are 0.33 and 0.37 respectively.The specific gravity (both SGG and SGAD of jabon wood was significantly differencein bothlongitudinal and radial direction; while the ADMC and FMC were not significantly difference for longitudinal direction but significantly difference for radial direction. On radial direction, the GMC decreased from the pith to midle and increased near ther bark; while the ADMC regularly decreased from the pith to bark. The specific gravity value on the longitudinaldirection consistently increases from the bottom of the trunk to the top. On radial direction, the specific gravity value consistently increases from the pith to near the bark. Penelitian ini bertujuan untuk mengetahui karakteristik sifat fisik kayu jabon (Anthocepalus cadamba Miq dan variasinya pada arah longitudinal dan radial batang.Sebanyak 3 pohon, masing-masing diambil sampel 3 titik pada arah longitudinal dan radial batang kayu jabondiambil dari hutan rakyat Desa Talagawangi, Kecamatan Pakenjeng

Boron tolerance in NS wheat lines

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Brdar Milka

2006-01-01

Full Text Available Boron is an essential micronutrient for higher plants. Present in excessive amounts boron becomes toxic and can limit plant growth and yield. Suppression of root growth is one of the symptoms of boron toxicity in wheat. This study was undertaken to investigate the response of 10 perspective NS lines of wheat to high concentrations of boron. Analysis of root growth was done on young plants, germinated and grown in the presence of different concentrations of boric acid (0, 50,100 and 150 mg/1. Significant differences occurred between analyzed genotypes and treatments regarding root length. Average suppression of root growth was between 11,6 and 34,2%, for line NS 252/02 are even noted 61,4% longer roots at treatments in relation to the control. Lines with mean suppression of root growth less than 20% (NS 101/02, NS 138/01, NS 53/03 and NS 73/02 may be considered as boron tolerant. Spearmans coefficients showed high level of agreement regarding rang of root length for genotypes treated with 100 and 150 mg H3BO3/l.

Boron: out of the sky and onto the ground

International Nuclear Information System (INIS)

Kuehl, D.K.

1975-01-01

Now an accepted, engineered material for aerospace applications, boron is taking its place on the ground. Both current production applications, prototype (development) applications, and speculative applications abound. In the leisure product market, boron epoxy or boron aluminum has been used or tried in golf clubs (in combination with graphite epoxy or to reinforce aluminum or steel), in tennis racquets, in bicycles, racing shells, skis and skipoles, bows and arrows, and others. In the industrial area, boron has been used to reduce fatigue, increase stiffness, or for its abrasive properties. Textile machinery, honing tools, and cut off wheels or saws are among the applications. In the medical field, prosthetics and orthotic braces, wheel chairs, canes, and crutches are all good applications for boron. Applications for boron in transportation, construction, and heavy industry are also possible. The volume of boron used in these applications could have a major impact on prices, making boron composite parts cost competitive with conventional materials. (U.S.)

PENGARUH KLIK SOSIAL DAN KONEKSI TERHADAP KESUKSESAN KARIR HIRARKHI

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Anang Kistyanto

2008-01-01

Full Text Available This research aimed in explaining the influence of social cliques and social network on the success of hierarchical career with career sponsorship as the intervening variable. The design of this research was explanatory research. Using two stage sampling, the 232 questionnaires were distributed to the manager of state-owned companies (BUMN at East Java and 108 of the questioner were returned. The result of regression analysis showed that partially and simultaneously social cliques and social network affected the career sponsorship; furthermore the career sponsorship affected the hierarchical career success. Abstract in Bahasa Indonesia : Penelitian ini bertujuan untuk menjelaskan pengaruh klik sosial dan koneksi terhadap kesuksesan karir hirarki dengan sponsor karir sebagai variabel antara. Desain penelitian ini adalah explanatory research. Dengan two-stage sampling, 232 kuesioner disebar kepada manajer BUMN di Jawa Timur dan sebanyak 108 kuesioner yang kembali. Hasil analisis regresi menunjukkan bahwa secara parsial dan simultan klik sosial dan koneksi berpengaruh positif terhadap sponsor karir; selanjutnya sponsor karir berpengaruh terhadap kesuksesan karir hirarki. Kata kunci: klik sosial, koneksi, sponsor karir, kesuksesan karir hirarkhi.

Identifikasi Variabel Kualitas Jasa dan Bauran Pemasaran yang Berpengaruh terhadap Kepuasan Mahasiswa di STBA Cipto Hadi Pranoto

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Dovina Navanti

2017-05-01

Full Text Available Penelitian ini bertujuan untuk mengetahui dan menganalisis seberapa besar pengaruh kualitas pelayanan dan bauran pemasaran jasa terhadap kepuasan mahasiswa di STBA Cipto Hadi Pranoto. Jenis penelitian ini adalah deskriptif kuantitatif. Penentuan sampel menggunakan rumus Slovin sebanyak 68 responden. Metode pengumpulan data yang digunakan adalah dengan memberikan instrumen penelitian berupa kuesioner kepada responden. Pengolahan data menggunakan analisis regresi dengan bantuan SPSS 17.0. Hasil penelitian ini menunjukkan bahwa service quality yang terdiri dari yang terdiri dari reliability, responsiveness, assurance, empathy, dan tangible memberi penngaruh positif terhadap kepuasan mahasiswa, sedangkan marketing mix yang terdiri dari product, price, promotion dan place memberi hubungan negatif terhadap kepuasan mahasiswa, artinya marketing mix belum dapat meningkatkan kepuasan mahasiswa di STBA Cipto Hadi Pranoto Hasil uji t variabel service quality berpengaruh signifikan terhadap kepuasan mahasiswa, karena t hitung = 5.454, lebih besar dari t-tabel pada signifikansi  =  0.05 (t-tabel = 1.997. Sedangkan variabel marketing mix tidak berpengaruh signifikan terhadap kepuasan mahasiswa dengan t-hitung = 1.624, lebih kecil dari t-tabel pada signifikansi  = 0.05 (t-tabel = 1.997. Artinya, variabel marketing mix ini memiliki hubungan yang tidak signifikan terhadap kepuasan mahasiswa.  Berdasarkan hasil analisis dan temuan dalam penelitian ini, maka dapat disimpulkan bahwa hanya variabel service quality yang mempunyai pengaruh yang signifikan terhadap kepuasan mahasiswa di STBA Cipto Hadi Pranoto.

ANALISIS KADAR HARA PUPUK ORGANIK KASCING DARI LIMBAH KANGKUNG DAN BAYAM

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Elfayetti Elfayetti

2017-04-01

Full Text Available Pertanian organik merupakan sistem pertanian yang holistik yang mendukung dan mempercepat biodeversiti, siklus biologi dan aktivitas biologi tanah(International Federation of Organic Agriculture Movements,2014. Geografi Pertanian merupakan mata kuliah di Jurusan Pendidikan Geografi FIS Unimed. Dalam Kurikulum Berbasis Kompetensi yang diterapkan di Jurusan Pendidikan Geografi FIS Unimed merupakan matakuliah wajib pada semester genap, tepatnya pada semester IV (empat. Penelitian ini bertujuan untuk mengetahui kemampuan pertumbuhan berat cacing tanah pada pupuk kascing dari limbah kangkung dan bayam dan untuk mengetahui kandungan hara N, P, K dan pH kascing dari limbah kangkung dan bayam pada tanah ultisol. Untuk mengatasi permasalahan pada pupuk organik, maka harus diupayakan bagaimana memperoleh pupuk yang memiliki unsur hara yang padat dan pengadaannya relatif murah dan mudah. Pemanfaatan limbah organik untuk budidaya cacing tanah merupakan salah satu tindakan yang tepat untuk mencapai tujuan tersebut. Rendahnya bahan organik, N, P, K menunjukkan bahwa tanah pada percobaan ini membutuhkan bahan organik. Pemberian bahan organik seperti cacing diharapkan dapat meningkatkan Produktivitas Ultisol dimana Kascing mempunyai sifat-sifat kimia, fisika, dan biologi tanah yang baik, sehingga dapat meningkatkan serapan hara dan pertumbuhan tanaman. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa : 1. Jenis makanan berpengaruh terhadap pertumbuhan cacing tanah dan kualitas kascing yang dihasilkan. 2.Terdapat perbedaaan pada bobot cacing tanah yang dihasilkan dengan adanya perbedaan jenis makanan. Jenis makanan bayam memberikan tingkat pertumbuhan cacing tanah terbaik dengan terjadinya pertambahan bobot sebesar 650 gram yang awalnya hanya 250 gram. 3. Dari beberapa parameter sifat kimia dan biologi kascing, maka jenis makanan bayam memberikan nilai N tertinggi yaitu 0,52 dan pada pakan kangkung terdapatnilai p tertinggi yaitu 0,35. Kata Kunci

Feasibility study of SMART core with soluble boron

International Nuclear Information System (INIS)

Kim, Kang Seog; Lee, Chung Chan; Zee, Sung Quun

2000-11-01

The excess reactivity of SMART core without soluble boron is effectively controlled by 49 CEDM. We suggest another method to control the core excess reactivity using both the checkerboard type of 25 CEDM and soluble boron and perform a feasibility calculation. The soluble boron operation is categorized into the on-line and the off-line mechanisms. The former is to successively control the boron concentration according to the excess reactivity during operation and the latter is to add and change some soluble boron during refueling and repairing. Since the on-line soluble boron control system of SMART is conceptually identical to that of the commercial pressurized water reactor, we did not perform the analysis. Since the soluble boron in the complete off-line system increases the moderator temperature coefficient, the reactivity defect between hot and cold moderator temperature is decreased. However, the decrease of the reactivity is not big to satisfy the core reactivity limits. When using 25 CEDM, the possible mechanism is to control the excess reactivity by both control rod and on-line boron control mechanism between cold and hot zero power and by only control rod at hot full power. We selected the loading pattern satisfying the requirement in the view of nuclear design

Determination of isotopic composition of boron in boron carbide by TIMS and PIGE: an inter-comparison study

International Nuclear Information System (INIS)

Sasibhushan, K.; Rao, R.M.; Parab, A.R.; Alamelu, D.; Aggarwal, S.K.; Acharya, R.; Chhillar, S.; Pujari, P.K.

2015-01-01

The paper reports a comparison of results on the determination of isotopic composition of boron in boron carbide (B 4 C) samples by Thermal Ionisation Mass Spectrometry (TIMS) and Particle Induced Gamma ray Spectrometry (PIGE). B 4 C samples having varying boron isotopic composition (natural, enriched with respect to 10 B) and their synthetic mixtures) have been analysed by both the techniques. The 10 B atom% was found to be in the range of 20-67%. (author)

Graphite and boron carbide composites made by hot-pressing

International Nuclear Information System (INIS)

Miyazaki, K.; Hagio, T.; Kobayashi, K.

1981-01-01

Composites consisting of graphite and boron carbide were made by hot-pressing mixed powders of coke carbon and boron carbide. The change of relative density, mechanical strength and electrical resistivity of the composites and the X-ray parameters of coke carbon were investigated with increase of boron carbide content and hot-pressing temperature. From these experiments, it was found that boron carbide powder has a remarkable effect on sintering and graphitization of coke carbon powder above the hot-pressing temperature of 2000 0 C. At 2200 0 C, electrical resistivity of the composite and d(002) spacing of coke carbon once showed minimum values at about 5 to 10 wt% boron carbide and then increased. The strength of the composite increased with increase of boron carbide content. It was considered that some boron from boron carbide began to diffuse substitutionally into the graphite structure above 2000 0 C and densification and graphitization were promoted with the diffusion of boron. Improvements could be made to the mechanical strength, density, oxidation resistance and manufacturing methods by comparing with the properties and processes of conventional graphites. (author)

Analisis Pengaruh Faktor Organisasi, Individu, Dan Lingkungan Terhadap Kinerja Karyawan Departemen Front Office Hotel Shangri-la Surabaya

OpenAIRE

Yonggara, Natalia; Gresia, Neria

2014-01-01

Penelitian ini dilakukan di Hotel Shangri-La Surabaya, terhadap populasi sebanyak 50 responden. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh faktor organisasi, individu, dan lingkungan terhadap kinerja karyawan departemen Front Office. Berdasarkan hasil penelitian, diperoleh pengaruh yang signifikan secara serempak pada faktor organisasi, individu, dan lingkungan terhadap kinerja karyawan. Sedangkan pengaruh yang signifikan secara parsial pada faktor individu dan lingkungan. Fa...

PENGARUH FRAKSI VOLUME PENGUAT TERHADAP KEKUATAN LENTUR GREEN COMPOSITE UNTUK APLIKASI PADA BODI KENDARAAN

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Mastariyanto Perdana

2016-07-01

Full Text Available Composites are one of material be used in engineering field. This is due the composites has light weight and relatively strong properties. The synthesis fiber-based composites reduces to obtain environmental friendly properties. This research use hybrid fiber which consist of calcium carbonate (CaCO3 powder and bagasse fiber. Matrix used is resin polyester. Variation of volume fraction between bagasse and calcium carbonate powder are 10:20, 15:15 and 20:10 respectively. Volume fraction of hybrid fiber and polyester is 30:70. This study aims to determine mechanical properties of hybrid composites for each variation of volume fraction. Test results showed. Bending strength of bagasse-based hybrid composites and powder of calcium carbonate with a variation of volume fraction of 10%: 20%, 15%: 15% and 20%: 10% are 53.77 MPa, 54.90 MPa and 59.76 MPa. Hybrid composites with volume fraction 20% bagasse and 10% calcium carbonate powder has highest of bending strength. Green composite based bagasse and calcium carbonate powder can use on application of vehicle body.Komposit merupakan salah satu material yang banyak digunakan pada bidang keteknikan. Ini dikarenakan komposit memiliki sifat ringan dan relatif kuat. Untuk mendapakatkan sifat yang ramah lingkungan, penggunaan komposit yang berbasis serat sintesis dikurangi penggunaannya. Penelitian ini menggunakan serat hibrid yaitu penggabungan antara serbuk kalsium karbonat (CaCO3 dan serat ampas tebu (bagasse. Matrix yang digunakan adalah resin polyester.Variasi fraksi volume antara bagasse dan serbuk kalsium karbonat masing-masing adalah 10:20, 15:15 dan 20:10. Fraksi volume antara serat hibrid dan resin polyester adalah 30:70. Penelitian ini bertujuan untuk mengetahui sifat mekanik dari komposit hibrid berbasis bagasse dan serbuk kalsium karbonat untuk masing-masing variasi fraksi volume. Hasil pengujian menunjukkan bahwakekuatan bending tertinggi komposit hibrid berbasis bagasse dan serbuk kalsium

PENGARUH KEMISKINAN, PERTUMBUHAN EKONOMI, DAN BELANJA MODAL TERHADAP IPM JAWA TENGAH

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Denni Sulistio Mirza

2015-12-01

Full Text Available The purpose of this study is to know the influences of poverty, economic growth and capital expenditures to the Human Development Index (HDI in Central Java. The result of Panel data regression indicates that poverty significantly and negative related to IPM. The economic growth has positive and significant impact on IPM. Next, the capital expenditures have a positive and significant effect on the HDI. It is recommended that the planning policy of government does not only view the achievement of economic growth but also the target of human development. It is because economic growth has not been able enough to improve the quality of human resources, especially in the aspects of education, health and income.Tujuan dari penelitian ini adalah mengetahui seberapa besar pengaruh kemiskinan, pertumbuhan ekonomi dan belanja modal terhadap Indeks Pembangunan Manusia (IPM di Jawa Tengah. Hasil regresi data panel menunjukkan bahwa kemiskinan berpengaruh negatif dan signifikan terhadap IPM. Pertumbuhan ekonomi berpengaruh positif dan signifikan terhadap IPM dan belanja modal berpengaruh positif dan signifikan terhadap IPM. Disarankan agar dalam merencanakan kebijakan pemerintah tidak hanya melihat dari pencapaian target peningkatan pertumbuhan ekonomi saja namun juga target peningkatan pembangunan manusia karena pertumbuhan ekonomi sendiri belum memadai untuk meningkatkan kualitas sumber daya manusia terutama pada aspek pendidikan, kesehatan dan pendapatan masyarakat.

Pengaruh Relationship Marketing Dan Customer Satisfaction Terhadap Customer Loyalty Pada Penjualan Sepeda Motor Honda Di PT Enam Tiga Sejahtera Tahun 2013

OpenAIRE

., Kadek Rai Suwena, S.Pd., M.Pd.; ., Dr. Iyus Akhmad Haris,M.Pd; ., Jumati

2014-01-01

Penelitian ini bertujuan untuk mengetahui pengaruh; (1) relationship marketing terhadap customer satisfaction, (2) relationship marketing terhadap customer loyalty, (3) customer satisfaction terhadap customer loyalty, (4) pengaruh relationship marketing terhadap customer loyalty melalui customer satisfaction. Populasi dalam penelitian ini adalah pelanggan yang telah membeli membeli sepeda motor Honda di PT Enam Tiga Sejahtera tahun 2013, jumlah sampel sebanyak 97 responden, dengan teknik peng...

Pengaruh Frit Gelas Terhadap Karakteristik Keramik Film Tebal FeTiO3 dari Mineral Yarosit untuk Aplikasi Termistor NTC

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Yus Rama Denny

2016-03-01

Full Text Available Pembuatan Dan Karakterisasi Keramik Film Tebal Berbasis FeTiO3 Dari Mineral Yarosit Untuk Aplikasi Termistor NTC. Telah dilakukan studi pembuatan dan karakterisasi termistor NTC dari bahan mineral yarosit. Bahan mineral yarosit dari alam dimurnikan dengan larutan HCl, diendapkan dengan menggunakan NH4OH dan dipanaskan pada suhu kalsinasi 700oC selama 2 jam. Pembuatan termistor NTC dilakukan dengan mecampurkan serbuk yarosit hasil pemurnian dan pengendapan dengan TiO2. Pasta termistor FeTiO3 dicetak dipermukaan alumina substrat dengan metode screen printing, kemudian dilakukan pemanasan pada suhu 500oC selama 1 jam diruangan udara dilanjutkan disinter pada suhu 1100oC selama 1 jam diruangan hidrogen. Sifat listrik keramik film tebal hasil sinter diukur pada berbagai suhu. Struktur kristal dievaluasi dengan difraksi sinar x (XRD, dan struktur mikro dievaluasi dengan menggunakan SEM (Scanning Electron Microscope. Data analisis XRD memperlihatkan bahwa seluruh keramik film tebal berstruktur heksagonal (Illiminite. Data struktur mikro dan sifat listrik memperlihatkan bahwa termistor dari yarosit memenuhi kebutuhan pasar.

Boron-Based Hydrogen Storage: Ternary Borides and Beyond

Energy Technology Data Exchange (ETDEWEB)

Vajo, John J. [HRL Laboratories, LLC, Malibu, CA (United States)

2016-04-28

DOE continues to seek reversible solid-state hydrogen materials with hydrogen densities of ≥11 wt% and ≥80 g/L that can deliver hydrogen and be recharged at moderate temperatures (≤100 °C) and pressures (≤100 bar) enabling incorporation into hydrogen storage systems suitable for transportation applications. Boron-based hydrogen storage materials have the potential to meet the density requirements given boron’s low atomic weight, high chemical valance, and versatile chemistry. However, the rates of hydrogen exchange in boron-based compounds are thus far much too slow for practical applications. Although contributing to the high hydrogen densities, the high valance of boron also leads to slow rates of hydrogen exchange due to extensive boron-boron atom rearrangements during hydrogen cycling. This rearrangement often leads to multiple solid phases occurring over hydrogen release and recharge cycles. These phases must nucleate and react with each other across solid-solid phase boundaries leading to energy barriers that slow the rates of hydrogen exchange. This project sought to overcome the slow rates of hydrogen exchange in boron-based hydrogen storage materials by minimizing the number of solid phases and the boron atom rearrangement over a hydrogen release and recharge cycle. Two novel approaches were explored: 1) developing matched pairs of ternary borides and mixed-metal borohydrides that could exchange hydrogen with only one hydrogenated phase (the mixed-metal borohydride) and only one dehydrogenated phase (the ternary boride); and 2) developing boranes that could release hydrogen by being lithiated using lithium hydride with no boron-boron atom rearrangement.

Structure and single-phase regime of boron carbides

International Nuclear Information System (INIS)

Emin, D.

1988-01-01

The boron carbides are composed of twelve-atom icosahedral clusters which are linked by direct covalent bonds and through three-atom intericosahedral chains. The boron carbides are known to exist as a single phase with carbon concentrations from about 8 to about 20 at. %. This range of carbon concentrations is made possible by the substitution of boron and carbon atoms for one another within both the icosahedra and intericosahedral chains. The most widely accepted structural model for B 4 C (the boron carbide with nominally 20% carbon) has B/sub 11/C icosahedra with C-B-C intericosahedral chains. Here, the free energy of the boron carbides is studied as a function of carbon concentration by considering the effects of replacing carbon atoms within B 4 C with boron atoms. It is concluded that entropic and energetic considerations both favor the replacement of carbon atoms with boron atoms within the intericosahedral chains, C-B-C→C-B-B. Once the carbon concentration is so low that the vast majority of the chains are C-B-B chains, near B/sub 13/C 2 , subsequent substitutions of carbon atoms with boron atoms occur within the icosahedra, B/sub 11/C→B/sub 12/. Maxima of the free energy occur at the most ordered compositions: B 4 C,B/sub 13/C 2 ,B/sub 14/C. This structural model, determined by studying the free energy, agrees with that previously suggested by analysis of electronic and thermal transport data. These considerations also provide an explanation for the wide single-phase regime found for boron carbides

PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN SISWA SEBAGAI NASABAH PADA BANK MINI SMK SMART AKUNTANSI DI SMK NEGERI 3 JEPARA

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Eka Sartika

2016-03-01

Full Text Available Penelitian ini dilakukan untuk mengetahui pengaruh kualitas pelayanan terhadap kepuasan siswa sebagai nasabah Bank Mini SMK Smart Akuntansi di SMK Negeri 3 Jepara secara simultan mapun parsial . Populasi dalam penelitian ini adalah seluruh siswa kelas X - XI tahun 2012/2013 SMK Negeri 3 Jepara yang terdaftar sebagai nasabah per 31 Desember 2012 sebanyak 157 siswa . Pengambilan sampel dilakukan se cara undian dengan metode proportional random sampling, dengan jumlah responden sebanyak 112 siswa. Metode pengambilan data menggunakan angket. Metode analisis data menggunakan analisis deskriptif dan analisis regresi linier berganda. Berdasarkan hasil pen elitian, kualitas pelayanan berpengaruh terhadap kepuasan siswa sebagai nasabah secara simultan . Secara parsial, v ariabel bukti fisik (tangible berpengaruh terhadap kepuasan siswa sebagai nasabah sebesar 4,0%, variabel jaminan ( assurance berpengaruh terhadap kepuasan siswa sebagai nasabah sebesar 6,15% dan empati ( emphaty berpengaruh terhadap kepuasan siswa sebagai nasabah sebesar 11,29%. Sedangkan variabel keandalan dan daya tangkap tidak berpengaruh secara parsial terhadap kepuasan siwa sebagai nasabah Bank Mini Smart Akuntansi

Understanding Boron through Size-Selected Clusters: Structure, Chemical Bonding, and Fluxionality

Energy Technology Data Exchange (ETDEWEB)

Sergeeva, Alina P.; Popov, Ivan A.; Piazza, Zachary A.; Li, Wei-Li; Romanescu, Constantin; Wang, Lai S.; Boldyrev, Alexander I.

2014-04-15

Conspectus Boron is an interesting element with unusual polymorphism. While three-dimensional (3D) structural motifs are prevalent in bulk boron, atomic boron clusters are found to have planar or quasi-planar structures, stabilized by localized two-center–two-electron (2c–2e) σ bonds on the periphery and delocalized multicenter–two-electron (nc–2e) bonds in both σ and π frameworks. Electron delocalization is a result of boron’s electron deficiency and leads to fluxional behavior, which has been observed in B13+ and B19–. A unique capability of the in-plane rotation of the inner atoms against the periphery of the cluster in a chosen direction by employing circularly polarized infrared radiation has been suggested. Such fluxional behaviors in boron clusters are interesting and have been proposed as molecular Wankel motors. The concepts of aromaticity and antiaromaticity have been extended beyond organic chemistry to planar boron clusters. The validity of these concepts in understanding the electronic structures of boron clusters is evident in the striking similarities of the π-systems of planar boron clusters to those of polycyclic aromatic hydrocarbons, such as benzene, naphthalene, coronene, anthracene, or phenanthrene. Chemical bonding models developed for boron clusters not only allowed the rationalization of the stability of boron clusters but also lead to the design of novel metal-centered boron wheels with a record-setting planar coordination number of 10. The unprecedented highly coordinated borometallic molecular wheels provide insights into the interactions between transition metals and boron and expand the frontier of boron chemistry. Another interesting feature discovered through cluster studies is boron transmutation. Even though it is well-known that B–, formed by adding one electron to boron, is isoelectronic to carbon, cluster studies have considerably expanded the possibilities of new structures and new materials using the B�

Modeling of interstitial diffusion of ion-implanted boron

International Nuclear Information System (INIS)

Velichko, O.I.; Knyazheva, N.V.

2009-01-01

A model of the interstitial diffusion of ion-implanted boron during rapid thermal annealing of silicon layers previously amorphized by implantation of germanium has been proposed. It is supposed that the boron interstitials are created continuously during annealing due to generation, dissolution, or rearrangement of the clusters of impurity atoms which are formed in the ion-implanted layers with impurity concentration above the solubility limit. The local elastic stresses arising due to the difference of boron atomic radius and atomic radius of silicon also contribute to the generation of boron interstitials. A simulation of boron redistribution during thermal annealing for 60 s at a temperature of 850 C has been carried out. The calculated profile agrees well with the experimental data. A number of the parameters of interstitial diffusion have been derived. In particular, the average migration length of nonequilibrium boron interstitials is equal to 12 nm. It was also obtained that approximately 1.94% of boron atoms were converted to the interstitial sites, participated in the fast interstitial migration, and then became immobile again transferring into a substitutional position or forming the electrically inactive complexes with crystal lattice defects. (authors)

PENGARUH KEBIJAKAN HARGA BBM, JUMLAH SEPEDA MOTOR, PENDAPATAN PERKAPITA TERHADAP KONSUMSI PREMIUM

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Tri Atmojo

2017-06-01

Full Text Available Konsumsi BBM di Indonesia semakin meningkat karena meningkatnya pendapatan masyarakat, jumlah kendaraan bermotor di Indonesia. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh kebijakan harga BBM, kendaraan bermotor (motor, pendapatan perkapita terhadap konsumsi BBM (Premium. Objek penelitian ini adalah konsumsi BBM di Republik Indonesia kurun waktu 1985-2014. Penelitian ini menggunakan desain penelitian dengan pendekatan kuantitatif. Analisis data menggunakan analisis Regresi Linier Berganda dengan metode Ordinary Least Square (OLS. Berdasarkan hasil penelitian dapat disimpulkan bahwa kebijakan harga berpengaruh signifikan terhadap konsumsi premium, pendapatan per kapita  berpengaruh positif terhadap konsumsi premium, jumlah sepeda motor berpengaruh positif terhadap konsumsi premium, serta harga BBM, pendapatan perkapita, dan jumlah sepeda motor secara serentak berpengaruh positif terhadap konsumsi premium. Fuel consumption in Indonesia is increasing due to rising incomes, the number of motor vehicles in Indonesia. The purpose of this study was to determine the effect of fuel price policy, motor vehicles (motorcycles, per capita income on the consumption of fuel (Premium. The object of this study is the fuel consumption in the Republic of Indonesia period 1985-2014. The design of this research study with a quantitative approach. Analyzed using Multiple Linear Regression Ordinary Least Square method (OLS. Based on the results of this study concluded that the pricing policies have a significant effect on the consumption of premium, per capita income has positive influence on consumption of premium, the number of motorcycles positive effect on premium consumption, as well as fuel prices, per capita income, and the number of motorcycles simultaneously positive effect on consumption of premium.

PENGARUH FAKTOR EKONOMI TERHADAP INFLASI YANG DIMEDIASI OLEH JUMLAH UANG BEREDAR

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Harda Putra Aprileven

2017-06-01

Full Text Available Setiap bangsa menginginkan adanya perkembangan atau kemajuan dalam berbagai aspek kehidupan secara berkelanjutan. Namun, pada kondisi inflasi, taraf kemakmuran sebagian besar masyarakat akan menurun, terutama masyarakat yang berpenghasilan tetap. Inflasi juga akan mengakibatkan prospek pembangunan ekonomi jangka panjang akan menjadi semakin memburuk. Lebih lanjut, investasi produktif akan berkurang, ekspor turun dan menaikkan impor yang pada gilirannya akan memperlambat pertumbuhan ekonomi, sehingga perlu dikaji kembali faktor-faktor yang mempengaruhi inflasi. Penelitian ini bertujuan menganalisis pengaruh tingkat suku bunga dan kurs sebagai variable independen terhadap jumlah uang beredar dan inflasi, serta menguji peran mediasi jumlah uang beredar dari pengaruh tingkat suku bunga dan kurs terhadap inflasi di Indonesia, pada tahun 2006-2012. Data yang dugunakan dalam penelitian ini adalah data time series yang diolah dan dianalisis menggunakan regresi linier ordinary leas square, serta path analysis guna mengetahui pengaruh langsung dan tidak langsung dari variable independen terhadap variable dependen. Hasil penelitian menunjukkan; secara parsial, tingkat suku bunga berpengaruh negatif (signifikan dan kurs berpengaruh positif (tidak signifikan terhadap jumlah uang beredar. Secara parsial, tingkat suku bunga berpengaruh positif (signifikan, kurs berpengaruh positif (tidak signifikan, dan jumlah uang beredar berpengaruh positif (signifikan terhadap inflasi. Jumlah uang beredar dalam penelitian menunjukkan tidak memediasi pengaruh tingkat suku bunga terhadap inflasi, tetapi memediasi pengaruh kurs terhadap inflasi.  Every nation wants the development or progress in various aspects of life in a sustainable manner. However, in conditions of inflation, the level of prosperity most people will decline, particularly fixed-income communities. Inflation will also lead to long-term economic development prospects will be getting worse. Furthermore

Pengaruh Appointment Registration System terhadap Waktu Tunggu dan Kepuasan Pasien

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Yuli Susanti

2015-02-01

Full Text Available Abstrak Peningkatan derajat kesehatan dapat dicapai melalui kemudahan akses terhadap fasilitas kesehatan. Peningkatan peserta pada program Jaminan Kesehatan Nasional (JKN mengakibatkan antrian panjang di sarana pelayanan kesehatan. Penelitian ini bertujuan untuk menganalisis pengaruh metode appointment registration system (ARS terhadap waktu tunggu dan kepuasan pasien. Metode penelitian yang digunakan adalah survei dengan sampel 380 orang dan observasi pada bulan Desember 2014 di RS Al-Islam Bandung. Analisis menggunakan structural equation modeling (SEM dan production operation management-quantitative methods (POMQM. Hasil penelitian diperoleh kondisi pelaksanaan ARS (60,7%, waktu tunggu (59,1%, dan kepuasan pasien (67,3% termasuk dalam kategori cukup. Terdapat pengaruh positif dan signifikan ARS terhadap waktu tunggu (51,84%, pengaruh positif dan signifikan waktu tunggu terhadap kepuasan pasien (25%, dan total pengaruh ARS terhadap kepuasan pasien (16,79%. ARS dapat menurunkan waktu tunggu secara efektif tetapi tidak semua metode ARS dapat menurunkan waktu tunggu. Simpulan, pasien RS Al-Islam Bandung merasa cukup puas terhadap pendaftaran appointment dan waktu tunggu. Kata kunci: Appointment registration system, kepuasan pasien, waktu tunggu   The Influence of Outpatient Appointment Registration System to Waiting Time and Patient Satisfications Abstract Health improvement can be achieved through accessibility to health services. An increased participants in the Health Insurance Program (HIP resulted in a long queue in the hospital. This research aim was to analize influence of appointment registration system (ARS to waiting time and patient satisfaction. Research method using patient satisfaction survey in 380 subjects and observation on December 2014 at Al-Islam Bandung Hospital. The result was analyzed using structural equation modeling (SEM and production operation management-quantitative methods (POMQM. The results showed that the

ANALISA KUALITAS PELAYANAN BIOSKOP TERHADAP KEPUASAN DAN LOYALITAS PELANGGAN MENGGUNAKAN METODE STRUCTURAL EQUATION MODELING (SEM

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Mochammad Edo Herokholiqi

2018-04-01

Full Text Available Bioskop XYZ adalah salah satu bioskop di wilayah kabupaten Sidoarjo yang mengutamakan kualitas dan kepuasan konsumen dengan terus memberikan layanan terbaik. Target pasar bioskop XYZ adalah masyarakat dengan ekonomi menengah ke bawah. Karena itu, pemilihan lokasi pendirian bioskop ini ialah pada tingkat kabupaten. Berkembangnya teknologi membuat persaingan bioskop semakin ketat baik dari pesaing, pembajakan film, harapan pelanggan meningkat serta bioskop yang masih dibutuhkan sebagai hiburan alternatif. Maka dari itu pengelola bioskop dituntut untuk lebih kreatif menarik pelanggan dengan berbagai cara antara lain dengan meningkatkan pelayanan. Untuk mengetahui pengaruh kualitas layanan terhadap kepuasan dan loyalitas pelanggan, serta pengaruh kepuasan pelanggan terhadap loyalitas pelanggan agar dapat memberikan beberapa usulan kepada bioskop berdasarkan hasil penelitian. Dalam meneliti hubungan variabel seperti permasalahan di atas digunakan metode Structural Equation Modeling (SEM. Hasil dari penelitian yang mengacu pada hasil uji hipotesa yang dilakukan menunjukkan bahwa variabel kualitas layanan berpengaruh terhadap kepuasan pelanggan, variabel kepuasan pelanggan berpengaruh terhadap loyalitas pelanggan namun variabel kualitas layanan tidak berpengaruh terhadap loyalitas pelanggan. Adapun indikator paling berpengaruh positif kualitas layananan yakni perhatian karyawan, pada kepuasan pelanggan yakni perasaan senang pelanggan dan pada variabel loyalitas pelanggan yakni merekomendasikan pada orang lain.

PENGARUH LEVEL DAN WAKTU MARINASI THEOBROMINE TERHADAP KUALITAS ORGANOLEPTIK DAGING SAPI BALI

OpenAIRE

ESARIANTO, ALIFRAN

2016-01-01

2015 ABSTRAK ALIFRAN ESARIANTO (I111 11 363). Pengaruh Level dan Waktu Marinasi Theobromine Terhadap Kualitas Organoleptik Daging Sapi Bali. Dibimbing oleh HIKMAH M. ALI dan ENDAH MURPININGRUM. Pemberian theobromine dapat meningkatkan kualitas organoleptik daging sapi Bali melalui perlakuan marinasi. Tujuan penelitian ini adalah untuk mengetahui pengaruh level dan lama marinasi theobromine serta interaksi keduanya terhadap kualitas organoleptik daging sapi Bali. Parameter yang diamat...

Boron exposure through drinking water during pregnancy and birth size.

Science.gov (United States)

Igra, Annachiara Malin; Harari, Florencia; Lu, Ying; Casimiro, Esperanza; Vahter, Marie

2016-10-01

Boron is a metalloid found at highly varying concentrations in soil and water. Experimental data indicate that boron is a developmental toxicant, but the few human toxicity data available concern mostly male reproduction. To evaluate potential effects of boron exposure through drinking water on pregnancy outcomes. In a mother-child cohort in northern Argentina (n=194), 1-3 samples of serum, whole blood and urine were collected per woman during pregnancy and analyzed for boron and other elements to which exposure occurred, using inductively coupled plasma mass spectrometry. Infant weight, length and head circumference were measured at birth. Drinking water boron ranged 377-10,929μg/L. The serum boron concentrations during pregnancy ranged 0.73-605μg/L (median 133μg/L) and correlated strongly with whole-blood and urinary boron, and, to a lesser extent, with water boron. In multivariable-adjusted linear spline regression analysis (non-linear association), we found that serum boron concentrations above 80μg/L were inversely associated with birth length (B-0.69cm, 95% CI -1.4; -0.024, p=0.043, per 100μg/L increase in serum boron). The impact of boron appeared stronger when we restricted the exposure to the third trimester, when the serum boron concentrations were the highest (0.73-447μg/L). An increase in serum boron of 100μg/L in the third trimester corresponded to 0.9cm shorter and 120g lighter newborns (p=0.001 and 0.021, respectively). Considering that elevated boron concentrations in drinking water are common in many areas of the world, although more screening is warranted, our novel findings warrant additional research on early-life exposure in other populations. Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.

Pengaruh Metode Student Teams Achievement Division (STAD dan Pemahaman Struktur Kalimat terhadap Keterampilan Menulis Narasi

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Sigit Widiyarto

2017-02-01

Full Text Available Tujuan penelitian ini  untuk mengetahui pengaruh metode Teams Achievment Division dan pemahaman  struktur kalimat terhadap keterampilan menulis Bahasa kalimat narasi. Metode penelitian ini menggunakan metode eksperimen dengan analisis dua jalur (Anova.Data  di lapangan  memakai hasil tes. Sampel diambil pada kelas VII SMP Swasta Future Gate Jatikramat Kota Bekasi. Jumlah siswa pada kelas kontrol dan eksperimen sebanyak 50 siswa. Berdasarkan analisis data yang dihitung dengan memakai Spss 22 dapat disimpulkan : 1.   Terdapat pengaruh signifikan metode Student Teams Achievment Division( STAD terhadap keterampilan menulis. 2 Tidak terdapat Pengaruh Struktur Kalimat terhadap Keterampilan menulis narasi. . 3. Tidak terdapat pengaruh  Metode STAD dan pemahaman  struktur kalimat secara bersama-sama terhadap keterampilan menulis narasi Kata Kunci  :  metode STAD, Penguasaan struktur kalimat dan keterampilan menulis narasi 

KEADILAN PROSEDUR DAN KEPERCAYAAN WP TERHADAP OTORITAS PAJAK: ANALISIS MEDIASI KEPATUHAN PAJAK

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Riri Zelmiyanti

2016-12-01

Full Text Available Abstract. The purpose of this is the influence of procedural justice on tax compliance through public confidence in the DJP. This study focus is on the SME sector because it would talk about PP 46 in 2013, and is expected to help policymakers in maximizing the potential taxation of SMEs. Based on this research, fairness heuristic theory argued that the procedural fairness of the tax authorities will increase taxpayer compliance. The study also examines the mediating effect relationship justice against tax compliance procedures in the presence of public confidence in the tax authorities. This research is using survey, by distributing questionnaires to taxpayers SMEs. In this research, there is validity and reliability test too. The analysis tool is used Structural Equation Modelling - Partial Least Square (PLS-SEM using software WarpPLS 3.0. P. For the conclude of the research shows that procedural justice effect on tax compliance. Hypothesis two in this study also supported that procedural justice effect on tax compliance through the existence of public confidence in the tax authorities. Keywords: Compliance; Tax SMEs; Fairness and Trust.   Abstrak. Tujuan dari hal ini adalah pengaruh keadilan prosedural terhadap kepatuhan pajak melalui kepercayaan masyarakat terhadap DJP. Fokus penelitian ini adalah pada sektor UKM karena akan membicarakan PP 46 pada tahun 2013, dan diharapkan dapat membantu pembuat kebijakan dalam memaksimalkan potensi perpajakan UKM. Berdasarkan penelitian ini, teori heuristik keadilan berpendapat bahwa keadilan prosedural otoritas pajak akan meningkatkan kepatuhan wajib pajak. Penelitian ini juga menguji independensi hubungan mediasi terhadap prosedur kepatuhan pajak dengan adanya kepercayaan publik terhadap otoritas pajak. Penelitian ini menggunakan survei, dengan menyebarkan kuesioner kepada pembayar pajak UKM. Dalam penelitian ini ada uji validitas dan reliabilitas juga. Alat analisisnya menggunakan Structural Equation

PENGARUH SERVANT LEADERSHIP TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOUR DENGAN MEDIASI TRUST IN LEADERSHIP PADA KARYAWAN THE LODEK VILLAS

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I Dewa Gede Dadhi Rakasiwi

2017-12-01

Full Text Available Perilaku karyawan yang melebihi peran yang diwajibkan dikategorikan dalam perilaku organizational citizenship behavior. Tujuan dari penelitian ini untuk menguji pengaruh servant leadership terhadap organizational citizenship behavior dengan mediasi trust in leadership pada karyawan The Lodek Villas Seminyak dengan menggunakan metode sensus (total sampling dalam menentukan sampel sebanyak 65 responden, melalui teknik analisis jalur (Path analisis. Hasil analisis menunjukkan bahwa servant leadership memiliki pengaruh positif dan signifikan terhadap organizational citizenship behavior pada karyawan The Lodek Villa. Servant leadership memiliki pengaruh positif dan signifikan terhadap trust in leadership yang diterapkan pimpinan The Lodek Villa. Trust in leadership memiliki pengaruh positif dan signifikan terhadap organizational citizenship behavior pada karyawan The Lodek Villa. Trust in leadership mampu memediasi hubungan positif servant leadership terhadap organizational citizenship behavior pada karyawan The Lodek Villa. Pimpinan perusahaan disarankan mempertimbangkan kepentingan bersama dalam mengambil keputusan sehingga karyawan merasa dihargai. Sebagai seorang pemimpin harus menjaga kebersamaan dengan mengajak karyawan berdiskusi untuk memberikan masukan dan saran yang berguna untuk kepentingan perusahaan.

Tumor cell killing effect of boronated dipeptide. Boromethylglycylphenylalanine on boron neutron capture therapy for malignant brain tumors

International Nuclear Information System (INIS)

Takagaki, Masao; Ono, Koji; Masunaga, Shinichiro; Kinashi, Yuko; Kobayashi, Toru; Oda, Yoshifumi; Kikuchi, Haruhiko; Spielvogel, B.F.

1994-01-01

The killing effect of Boron Neutron Capture Therapy; BNCT, is dependant on the boron concentration ratio of tumor to normal brain (T/N ratio), and also that of tumor to blood (T/B ratio). The clinical boron carrier of boro-captate (BSH) showed the large T/N ratio of ca. 8, however the T/B ratio was around 1, which indicated nonselective accumulation into tumor. Indeed high boron concentration of blood restrict the neutron irradiation dose in order to circumvent the normal endothelial damage, especially in the case of deeply seated tumor. Phenylalanine analogue of para borono-phenylalanine (BPA) is an effective boron carrier on BNCT for malignant melanoma. For the BNCT on brain tumors, however, BPA concentration in normal brain was reported to be intolerably high. In order to improve the T/N ratio of BPA in brain, therefore, a dipeptide of boromethylglycylphenylalanine (BMGP) was synthesized deriving from trimethylglycine conjugated with BPA. It is expected to be selectively accumulated into tumor with little uptake into normal brain. Because a dipeptide might not pass through the normal blood brain barrier (BBB). Its killing effect on cultured glioma cell, T98G, and its distribution in rat brain bearing 9L glioma have been investigated in this paper. The BNCT effect of BMGP on cultured cells was nearly triple in comparison with DL-BPA. The neutron dose yielding 1% survival ratio were 7x10 12 nvt for BMGP and 2x10 13 nvt for BPA respectively on BNCT after boron loading for 16 hrs in the same B-10 concentration of 20ppm. Quantitative study of boron concentration via the α-auto radiography and the prompt gamma ray assay on 9L brain tumor rats revealed that T/N ratio and T/B ratio are 12.0 and 3.0 respectively. Those values are excellent for BNCT use. (author)

Influence of dopants, particularly carbon, on β-rhombohedral boron

Science.gov (United States)

Werheit, H.; Flachbart, K.; Pristáš, G.; Lotnyk, D.; Filipov, V.; Kuhlmann, U.; Shitsevalova, N.; Lundström, T.

2017-09-01

Due to the high affinity of carbon to boron, the preparation of carbon-free boron is problematic. Even high-purity (6 N) β-rhombohedral boron contains 30-60 ppm of C. Hence, carbon affects the boron physical properties published so far more or less significantly. We studied well-defined carbon-doped boron samples based on pure starting material carefully annealed with up to about 1% C, thus assuring homogeneity. We present and discuss their electrical conductivity, optical absorption, luminescence and phonon spectra. Earlier attempts of other authors to determine the conductivity of C-doped boron are revised. Our results allow estimating the effects of oxygen and iron doping on the electrical conductivity using results taken from literature. Discontinuities at low T impair the electronic properties.

Persepsi Mahasiswa Program Pascasarjana Terhadap Database Science Direct Pada Perpustakaan Universitas Sumatera Utara

OpenAIRE

Purba, Artita Wati Dorma

2017-01-01

120709051 Purba, Artita Wati Dorma. 2017. Persepsi Mahasiswa Program Pascasarjana terhadap Database Science Direct pada Perpustakaan Universitas Sumatera Utara. MEDAN: Program Studi Ilmu Perpustanaan, Fakultas Ilmu Budaya, Universitas Sumatera Utara Penelitian ini bertujuan untuk mengetahui bagaimanakah persepsi mahasiswa program Pascasarjana terhadap Database Science Direct pada Perpustakaan Universitas Sumatera Utara. Penelitian ini menggunakan metode deskriptif dengan pendekatan kuan...

ANALISIS PENGARUH CUSTOMER RELATIONSHIP MANAGEMENT TERHADAP KEPUASAN PELANGGAN PADA PT TELKOMSEL DI MAKASSAR

OpenAIRE

ANANDA, RACHMA RESKY

2015-01-01

2015 Analisis Pengaruh Customer Relationship Management Terhadap Kepuasan Pelanggan Pada PT Telkomsel di Makassar Analysis of Customer Relationship Management Influence to Customer Satisfaction at PT Telkomsel in Makassar Rachma Resky Ananda Muh. Asdar Yansor Djaya Tujuan dari penelitian ini adalah untuk menganalisis pengaruh Customer Relationship (continuity marketing, one to one marketing dan partnering atau co-marketing) terhadap k...

Persepsi Pemustaka Terhadap Layanan America Corner di Perpustakaan Pusat Universitas Hasanuddin Makassar

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Ayu Trysnawati

2015-11-01

Full Text Available American Corner merupakan salah satu bentuk layanan yang ada di Perpustakaan UNHAS. Penelitian ini bertujuan untuk mengetahui persepsi pemustaka terhadap layanan American Corner di Perpustakaan UNHAS. Jenis penelitian ini merupakan jenis penelitian deskriptif kualitatif. Sumber data dalam penelitian ini adalah pemustaka layanan American Corner. Teknik pengumpulan data dilakukan melalui: (1 wawancara, (2 observasi, (3 dokumentasi. Teknik analisis data dalam bentuk reduksi data, penyajian data (data display, dan menarik kesimpulan/verifikasi untuk memperoleh hasil akhir.Berdasarkan hasil penelitian menunjukkan bahwa: (1 Persepsi pemustaka terhadap pelayanan American Corner di Perpustakaan UNHAS  sangat baik, layanan yang terdapat pada American Corner membuat pemustaka nyaman berkunjung. (2 Persepsi pemustaka terhadap koleksi American Corner di Perpustakaan Pusat Universitas Hasanuddin Makassar ditanggapi baik oleh pemustaka. Segala hal yang berkaitan dengan koleksi American Corner membuat pemustaka senang berkunjung.

From boron analogues of amino acids to boronated DNA: potential new pharmaceuticals and neutron capture agents

International Nuclear Information System (INIS)

Spielvogel, B.F.; Sood, Anup; Duke Univ., Durham, NC; Shaw, B.R.; Hall, I.H.

1991-01-01

Isoelectronic and isostructural boron analogues of the α-amino acids ranging from simple glycine analogues such as H 3 NBH 2 COOH and Me 2 NHBH 2 COOH to alanine analogues have been synthesised. A diverse variety of analogues, including precursors and derivatives (such as peptides) have potent pharmacological activity, including anticancer, antiinflammatory, analgesic, and hypolipidemic activity in animal model studies and in vitro cell cultures. Boronated nucleosides and (oligo)nucleotides, synthetic oligonucleotide analogues of ''antisense'' agents interact with a complementary nucleic acid sequence blocking the biological effect of the target sequence. Nucleosides boronated on the pyrimidine and purine bases have been prepared. It has been established that an entirely new class of nucleic acid derivatives is feasible in which one of the non-bridging oxygens in the internucleotide phosphodiester linkage can be replaced by an isoelectronic analogue, the borane group, (BH 3 ). The boronated oligonucleotides can be viewed as hybrids of the normal oxygen oligonucleotides and the methylphosphonate oligonucleotides. (author)

PENGARUH MOTIVASI KERJA DAN KEADILAN ORGANISASI TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIOR (OCB

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Nazmah Nazmah

2017-08-01

Full Text Available Penelitian ini bertujuan untuk menguji pengaruh motivasi kerja dan keadilan organisasi terhadap organizational citizenship behaviour (OCB. Populasi penelitian adalah karyawan tetap/organikPT. Summit Oto Finance dengan masa kerja lebih dari dua tahun. Jumlah anggota populasi adalah 61 orang. Dikarenakan jumlah subyek yang terbatas, maka seluruhnya dilibatkan sebagai sampel penelitian (teknik total sampling. Data penelitian dikumpulkan dengan menggunakan skala motivasi kerja, skala persepsi keadilan organisas,i dan skalaorganizational citizenship behaviour (OCB. Analisis regresi linier berganda digunakan untuk menguji hipotesis penelitian. Analisa data menunjukkanadanya pengaruh  yang signifikan antara motivasi kerja dan keadilan organisasi terhadap organizational citizenship behavior pada karyawan PT. Summit Oto Finance. Variabel motivasi kerja dan keadilan organisasi memiliki kontribusi terhadap organizational citizenship behavior sebesar 54.7%. Secara spesifik diketahui bahwa karyawan PT. Summit Oto Finance memiliki motivasi kerja, persepsi mengenai keadilan organisasi, serta organizational citizenship behavior yang berada di kategori sedang.

PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN DAN LOYALITAS PENGUNJUNG SAUNG ANGKLUNG UDJO

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Rahmat Priyanto

2016-12-01

ABSTRAK Pelayanan menjadi faktor penting dalam industri usaha pariwisata sebagai produk utama yang disampaikan kepada konsumen, sehingga kualitas yang baik menjadi sangat penting dalam memuaskan konsumen. Kualitas pelayanan yang baik akan menghasilkan kepuasan dan loyalitas konsumen, sedangkan kualitas pelayanan yang buruk akan memberikan kekecewaan kepada konsumen. Penelitian ini bertujuan untuk mengetahui pengaruh kualitas pelayanan terhadap kepuasan dan loyalitas wisatawan yang berkunjung ke Saung Angklung Udjo. Variabel bebas dalam penelitian ini adalah kualitas pelayanan serta variable terikatnya adalah kepuasan dan loyalitas. Metode yang digunakan dalam penelitian ini adalah deskriptif verifikatif dengan pendekatan kuantitatif. Berdasarkan uji statistika yang dilakukan dapat diketahui bahwa variabel kualitas pelayanan berpengaruh signifikan terhadap kepuasan dan loyalitas pengunjung Saung Angklung Udjo, begitu juga dengan variabel kepuasan yang berpengaruh signifikan terhadap variabel loyalitas pengunjung. Berdasarkan hasil penelitian yang telah dilakukan maka dalam upaya meningkatkan kepuasan dan loyalitas pengunjung, diperlukan strategi peningkatan kualitas pelayanan yang prima

Meningkatkan Minat Terhadap Jurusan Teknik Gambar Bangunan Melalui Layanan Bimbingan Kelompok

Directory of Open Access Journals (Sweden)

Faskhau Maulvi Alim

2014-10-01

Full Text Available Tujuan dari penelitian ini untuk mengetahui gambaran minat terhadap jurusan Teknik Gambar Bangunan sebelum dan setelah memperoleh layanan Bimbingan Kelompok serta mengetahui perbedaan tingkat minat terhadap jurusan Teknik Gambar Bangunan sebelum dan setelah memperoleh layanan Bimbingan Kelompok. Penelitian ini dilakukan di SMK Negeri 5 Semarang dengan subyek 10 orang siswa. Metode pengumpulan data yang digunakan yaitu skala psikologis. Teknik analisis data menggunakan uji wilcoxon match pairs. Hasil penelitian menunjukan minat terhadap jurusan Teknik Gambar Bangunan sebelum pemberian treatment rata-rata pada kategori sedang (67,9%. Setelah pemberian treatment, minat terhadap jurusan Teknik Gambar Bangunan rata-rata pada kategori tinggi (79,1%. Hasil uji wilcoxon match pairs menunjukan   (0 dan   5% (8, sehingga   (0   8 yang berarti   diterima dan   ditolak. Hal tersebut menunjukan bahwa minat terhadap jurusan Teknik Gambar Bangunan dapat ditingkatkan melalui layanan Bimbingan Kelompok. The research problems are include (1  How is the cooperative model type talking stick which is helped multimedia quiz creator to improve the senior high school students’ folklore attentive skill. (2 how is the principles of cooperative model type talking stick development which is helped by multimedia quiz creator to improve the  senior high school students’ folklore attentive skill. This research uses research and development design (R&D, this research developes model which  have been exist that is cooperative model type talking stick into cooperative model type talking stick which is helped by multimedia quiz creator. The results of the researches are : (1 the teacher and students’ need toward to cooperative model type talking stick which is helped by multimedia quiz creator. (2 cooperative model type talking stick priciples are (a innovative learning strategy, (b innovative learning media, (c assessment.

Boron Neutron Capture Therapy (BCNT) for the Treatment of Liver Metastases: Biodistribution Studies of Boron Compounds in an Experimental Model

Energy Technology Data Exchange (ETDEWEB)

Marcela A. Garabalino; Andrea Monti Hughes; Ana J. Molinari; Elisa M. Heber; Emiliano C. C. Pozzi; Maria E. Itoiz; Veronica A. Trivillin; Amanda E. Schwint; Jorge E. Cardoso; Lucas L. Colombo; Susana Nievas; David W. Nigg; Romina F. Aromando

2011-03-01

Abstract We previously demonstrated the therapeutic efficacy of different boron neutron capture therapy (BNCT) protocols in an experimental model of oral cancer. BNCT is based on the selective accumulation of 10B carriers in a tumor followed by neutron irradiation. Within the context of exploring the potential therapeutic efficacy of BNCT for the treatment of liver metastases, the aim of the present study was to perform boron biodistribution studies in an experimental model of liver metastases in rats. Different boron compounds and administration conditions were assayed to determine which administration protocols would potentially be therapeutically useful in in vivo BNCT studies at the RA-3 nuclear reactor. A total of 70 BDIX rats were inoculated in the liver with syngeneic colon cancer cells DHD/K12/TRb to induce the development of subcapsular tumor nodules. Fourteen days post-inoculation, the animals were used for biodistribution studies. We evaluated a total of 11 administration protocols for the boron compounds boronophenylalanine (BPA) and GB-10 (Na210B10H10), alone or combined at different dose levels and employing different administration routes. Tumor, normal tissue, and blood samples were processed for boron measurement by atomic emission spectroscopy. Six protocols proved potentially useful for BNCT studies in terms of absolute boron concentration in tumor and preferential uptake of boron by tumor tissue. Boron concentration values in tumor and normal tissues in the liver metastases model show it would be feasible to reach therapeutic BNCT doses in tumor without exceeding radiotolerance in normal tissue at the thermal neutron facility at RA-3.

Boron concentration measurements by alpha spectrometry and quantitative neutron autoradiography in cells and tissues treated with different boronated formulations and administration protocols

International Nuclear Information System (INIS)

Bortolussi, Silva; Ciani, Laura; Postuma, Ian; Protti, Nicoletta; Luca Reversi,; Bruschi, Piero; Ferrari, Cinzia; Cansolino, Laura; Panza, Luigi; Ristori, Sandra; Altieri, Saverio

2014-01-01

The possibility to measure boron concentration with high precision in tissues that will be irradiated represents a fundamental step for a safe and effective BNCT treatment. In Pavia, two techniques have been used for this purpose, a quantitative method based on charged particles spectrometry and a boron biodistribution imaging based on neutron autoradiography. A quantitative method to determine boron concentration by neutron autoradiography has been recently set-up and calibrated for the measurement of biological samples, both solid and liquid, in the frame of the feasibility study of BNCT. This technique was calibrated and the obtained results were cross checked with those of α spectrometry, in order to validate them. The comparisons were performed using tissues taken form animals treated with different boron administration protocols. Subsequently the quantitative neutron autoradiography was employed to measure osteosarcoma cell samples treated with BPA and with new boronated formulations. - Highlights: • A method for 10B measurements in samples based on neutron autoradiography was developed. • The results were compared with those of alpha spectrometry applied on tissue and cell samples. • Boronated liposomes were developed and administered to osteosarcoma cell cultures. • Neutron autoradiography was employed to measure boron concentration due to liposomes. • Liposomes were proved to be more effective in concentrating boron in cells than BPA

Pengaruh Literasi Ekonomi dan Gaya Hidup terhadap Perilaku Konsumtif Mahasiswa Jurusan Pendidikan Ekonomi Universitas Pendidikan Ganesha Tahun 2015

OpenAIRE

., Drs. I Made Nuridja, M.Pd.; ., Dr. Iyus Akhmad Haris,M.Pd; ., Dias Kanserina

2015-01-01

Penelitian ini bertujuan untuk mengetahui (1) pengaruh literasi ekonomi terhadap perilaku konsumtif Mahasiswa Jurusan Pendidikan Ekonomi Undiksha, (2) pengaruh gaya hidup terhadap perilaku konsumtif Mahasiswa Jurusan Pendidikan Ekonomi Undiksha, (3) pengaruh literasi ekonomi dan gaya hidup terhadap perilaku konsumtif Mahasiswa Jurusan Pendidikan Ekonomi Undiksha. Subjek penelitian ini adalah Mahasiswa Jurusan Pendidikan Ekonomi Universitas Pendidikan Ganesha berjumlah 111 mahasiswa dengan obj...

Exploiting the enantioselectivity of Baeyer-Villiger monooxygenases via boron oxidation

NARCIS (Netherlands)

Brondani, Patricia B.; Dudek, Hanna; Reis, Joel S.; Fraaije, Marco W.; Andrade, Leandro H.

2012-01-01

The enantioselective carbon-boron bond oxidation of several chiral boron-containing compounds by Baeyer-Villiger monooxygenases was evaluated. PAMO and M446G PAMO conveniently oxidized 1-phenylethyl boronate into the corresponding 1-(phenyl)ethanol (ee = 82-91%). Cyclopropyl boronic esters were also

Boronic acid-based chemical sensors for saccharides.

Science.gov (United States)

Zhang, Xiao-Tai; Liu, Guang-Jian; Ning, Zhang-Wei; Xing, Guo-Wen

2017-11-27

During the past decades, the interaction between boronic acids-functionalized sensors and saccharides is of great interest in the frontier domain of the interdiscipline concerning both biology and chemistry. Various boronic acid-based sensing systems have been developed to detect saccharides and corresponding derivatives in vitro as well as in vivo, which embrace unimolecular sensors, two-component sensing ensembles, functional assemblies, and boronic acid-loaded nanomaterials or surfaces. New sensing strategies emerge in endlessly with excellent selectivity and sensitivity. In this review, several typical sensing systems were introduced and some promising examples were highlighted to enable the deep insight of saccharides sensing on the basis of boronic acids. Copyright © 2017 Elsevier Ltd. All rights reserved.

Boron removal in radioactive liquid waste by forward osmosis membrane

Energy Technology Data Exchange (ETDEWEB)

Doo Seong Hwang; Hei Min Choi; Kune Woo Lee; Jei Kwon Moon [KAERI, Daejeon (Korea, Republic of)

2013-07-01

This study investigated the treatment of boric acid contained in liquid radioactive waste using a forward osmosis membrane. The boron permeation through the membrane depends on the type of membrane, membrane orientation, pH of the feed solution, salt and boron concentration in the feed solution, and osmotic pressure of the draw solution. The boron flux begins to decline from pH 7 and increases with an increase of the osmotic driving force. The boron flux decreases slightly with the salt concentration, but is not heavily influenced by a low salt concentration. The boron flux increases linearly with the concentration of boron. No element except for boron was permeated through the FO membrane in the multi-component system. The maximum boron flux is obtained in an active layer facing a draw solution orientation of the CTA-ES membrane under conditions of less than pH 7 and high osmotic pressure. (authors)

PENGARUH KARAKTERISTIK, KESELAMATAN DAN KESEHATAN KERJA TERHADAP PRODUKTIVITAS TENAGA KERJA

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Desy Yanti Tri W.A.T

2017-06-01

Full Text Available Sebagian besar penduduk Kota Semarang bekerja di sektor industri, dengan begitu diharapkan dapat meningkatkan produkivitas tenaga kerja. Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh usia, tingkat pendidikan, masa kerja, dan keselamatan dan kesehatan kerja terhadap produktivitas tenaga kerja di kota Semarang. Populasi dalam penelitian ini sebanyak 3.449 orang dan sampel penelitian berjumlah 97 responden yang bekerja pada industri baja di Kota Semarang. Penelitian ini menggunakan analisis deskriptif dan regresi linier berganda. Teknik pengambilan sampel dalam penelitian ini adalah teknik probability sampling yang meliputi simple random sampling. Pengumpulan data dalam penelitian ini dengan beberapa cara, yaitu penelusuran literatur, kuesioner dan wawancara. Hasil penelitian ini adalah 1 usia berpengaruh positif dan signifikan terhadap produktivitas tenaga kerja, 2 tingkat pendidikan berpengaruh positif namun tidak signifikan terhadap produktivitas tenaga kerja, 3 masa kerja berpengaruh negatif namun signifikan terhadap produktivitas tenaga kerja, dan 4 keselamatan dan kesehatan kerja berpengaruh positif dan signifikan terhadap produktivitas tenaga kerja pada industri baja di Kota Semarang. Most residents of Semarang working in the industrial sector, thus expected to increase Productivity of labor. This study aims to determine how big the influence of age, education level, length of employment, and occupational safety and health on labor productivity in Semarang. The population in this study as many as 3,449 people and the sample amounted to 97 respondents who work in the steel industry in the city of Semarang. This research uses descriptive analysis and multiple linear regression. The sampling technique in this research is the probability sampling techniques which include simple random sampling. Collecting data in this study in several ways, namely literature search, questionnaire and interview. Results of this study were 1

PERILAKU PENCEGAHAN DIRI TERHADAP PENULARAN HIV/AIDS PADA KELOMPOK CALON TENAGA BURUH MIGRAN/TKI/TKW DI PONOROGO

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Sulistyo . Andarmoyo

2016-02-01

Full Text Available AIDS (Acquired Immuno Deificiency Syndrom masih merupakan permasalahan global. Dewasa ini ada trend atau kecenderungan dimana TKI juga turut serta menyumbang andil besar terhadap penularan HIV/AIDS. pemahaman pekerja migran Indonesia terhadap HIV/AIDS masih rendah mengakibatkan tenaga kerja di luar negeri mudah terinfeksi virus mematikan ini. Penelitian ini bertujuan untuk mengetahui bagaimanakah perilaku pencegahan diri terhadap penularan HIV/AIDS pada kelompok calon tenaga buruh Migran/TKI/TKW di Ponorogo. Desain penelitian ini adalah observasional analitik dengan rancangan cross sectional. Tempat Penelitian di PJTKI Cipta Karsa Bumi Lestari Ponorogo dengan alasan mudah dijangkau oleh peneliti dan ketersediaan veriabel pada tempat tersebut. Populasi dan sampel adalah TKI/TKW di PJTKI tersebut, dengan tehnik pengambilan sampel Simple Random Sampling Hasil penelitian menunjukkan bahwa perilaku pencegahan diri terhadap penularan HIV/AIDS pada kelompok calon buruh migran/TKI/TKW di Ponorogo sebagian besar (63,3% atau 19 responden perilaku pencegahan diri terhadap penularan HIV/AIDS negatif dan selebihnya sebanyak (36,7% berperilaku positif. Dibutuhkan penangganan yang komprehensif dalam mencegah resiko penularan penyakit tersebut. langkah-langkah yang strategis dari pihak terkait dalam meningkatkan pengetahuan merupakan aspek mendasar yang harus dperhatikan saat ini sehingga pada akhirnya dapat meningkatkan perilaku yang baik pula dalam pencegahan diri terhadap penularan HIV/ AIDS.

Boron adsorption on hematite and clinoptilolite

International Nuclear Information System (INIS)

Gainer, G.M.

1993-01-01

This thesis describes experiments performed to determine the suitability of boron as a potential reactive tracer for use in saturated-zone C-well reactive tracer studies for the Yucca Mountain Project (YMP). Experiments were performed to identify the prevalent sorption mechanism of boron and to determine adsorption of boron on hematite and clinoptilolite as a function of pH. These minerals are present in the Yucca Mountain tuff in which the C-well studies will be conducted. Evaluation of this sorption mechanism was done by determining the equilibration time of boron-mineral suspensions, by measuring changes in equilibrium to titrations, and by measuring electrophoretic mobility. Experiments were performed with the minerals suspended in NaCl electrolytes of concentrations ranging from 0.1 N NaCl to 0.001 N NaCl. Experimentalconditions included pH values between 3 and 12 and temperature of about 38 degrees C

Determination of boron in amorphous alloys

Energy Technology Data Exchange (ETDEWEB)

Grazhulene, S.S.; Grossman, O.V.; Kuntscher, K.K.; Malygina, L.I.; Muller, E.N.; Telegin, G.F.

1985-10-01

In the determination of boron in amorphous alloys containingFe, Co, B, Si, Ni, and P having unusal magnetic and electrical properties, precise analysis and rapid analysis are necessary. To improve the metrological properties of the existing procedure, to find a rapid determination of boron in amorphous alloys, and to verify the accuracy of the results, in the present work the optimization of the photometric determination after extraction of the BF/sup -//sub 4/ ion pair with methylene blue has been studied, and a boron determination by flame photometry using selective methylation has been developed. The determination of boron by the flame photometric and spectrophotometric methods is shown. When a highly precise determination is needed, the spectrophotometric procedure can be used. This procedure is distinguished by its labor intensity and duration. When the need for reproducibility is less severe, the rapid flame photometric procedure is best.

Pengaruh Corporate Social Responsibility Terhadap Profitabilitas Pt. Telkom Tbk Sebagai Pemenang Csr Award 2008

Directory of Open Access Journals (Sweden)

Novita Ekasari

2012-04-01

Full Text Available Penelitian ini bertujuan untuk menguji pengaruh CSR terhadap profitabilitas PT.TELKOM Tbk yang memperoleh penganugerahan CSR Award 2008. Penelitian ini menggunakan CSR Disclosure Indeks (CSRI dengan indikator GRI (Global Reporting Initiative sebagai variabel independen serta tiga variabel dependen profitabilitas perusahaan yang terdiri dari ROA, ROE, dan EPS. Hasil penelitian ini membuktikan penerapan CSR tidak berpengaruh signifikan terhadap ROA dan EPS, namun penerapan CSR berpengaruh secara signifikan terhadap ROE. Hal ini dapat dikarenakan krisis ekonomi global yang terjadi pada tahun 2008 sehingga hasil penelitian ini kurang efektif dan mayoritas investor berorientasi pada kinerja jangka pendek jadi belum mulai menjadikan informasi CSR perusahaan sebagai salah satu tolok ukur dalam investasi.

PENGARUH DIGITAL MARKETING DAN CUSTOMER RELATIONSHIP MARKETING TERHADAP LOYALITAS KONSUMEN MASKAPAI PENERBANGAN GARUDA INDONESIA

OpenAIRE

BUDIMAN, NOVAYANTI

2017-01-01

2017 ABSTRAK PENGARUH DIGITAL MARKETING DAN CUSTOMER RELATIONSHIP MARKETING TERHADAP LOYALITAS KONSUMEN MASKAPAI PENERBANGAN GARUDA INDONESIA THE INFLUENCES OF DIGITAL MARKETING AND CUSTOMER RELATIONSHIP MARKETING TOWARD GARUDA INDONESIA AIRLINES??? CUSTOMER LOYALTY Novayanti Budiman Yansor Djaya Wahda Penelitian ini bertujuan untuk menganalisis pengaruh dari pemasaran digital dan pemasaran hubungan konsumen terhadap loyalitas ...

Boron removal by electrocoagulation and recovery.

Science.gov (United States)

Isa, Mohamed Hasnain; Ezechi, Ezerie Henry; Ahmed, Zubair; Magram, Saleh Faraj; Kutty, Shamsul Rahman Mohamed

2014-03-15

This work investigated the removal of boron from wastewater and its recovery by electrocoagulation and hydrothermal mineralization methods respectively. The experimental design was developed using Box-Behnken Model. An initial study was performed based on four preselected variables (pH, current density, concentration and time) using synthetic wastewater. Response surface methodology (RSM) was used to evaluate the effect of process variables and their interaction on boron removal. The optimum conditions were obtained as pH 6.3, current density 17.4 mA/cm(2), and time 89 min. At these applied optimum conditions, 99.7% boron removal from an initial concentration of 10.4 mg/L was achieved. The process was effectively optimized by RSM with a desirability value of 1.0. The results showed that boron removal efficiency enhanced with increase in current density and treatment time. Removal efficiency also increased when pH was increased from 4 to 7 and subsequently decreased at pH 10. Adsorption kinetics study revealed that the reaction followed pseudo second order kinetic model; evidenced by high correlation and goodness of fit. Thermodynamics study showed that mechanism of boron adsorption was chemisorption and the reaction was endothermic in nature. Furthermore, the adsorption process was spontaneous as indicated by negative values of the adsorption free energy. Treatment of real produced water using electrocoagulation resulted in 98% boron removal. The hydrothermal mineralization study showed that borate minerals (Inyoite, Takadaite and Nifontovite) can be recovered as recyclable precipitate from electrocoagulation flocs of produced water. Copyright © 2013 Elsevier Ltd. All rights reserved.

Numerical simulation of boron injection in a BWR

Energy Technology Data Exchange (ETDEWEB)

Tinoco, Hernan, E-mail: htb@forsmark.vattenfall.s [Forsmarks Kraftgrupp AB, SE-742 03 Osthammar (Sweden); Buchwald, Przemyslaw [Reactor Technology, Royal Institute of Technology, SE-100 44 Stockholm (Sweden); Frid, Wiktor, E-mail: wiktor@reactor.sci.kth.s [Reactor Technology, Royal Institute of Technology, SE-100 44 Stockholm (Sweden)

2010-02-15

The present study constitutes a first step to understand the process of boron injection, transport and mixing in a BWR. It consists of transient CFD simulations of boron injection in a model of the downcomer of Forsmark's Unit 3 containing about 6 million elements. The two cases studied are unintentional start of boron injection under normal operation and loss of offsite power with partial ATWS leaving 10% of the core power uncontrolled. The flow conditions of the second case are defined by means of an analysis with RELAP5, assuming boron injection start directly after the first ECCS injection. Recent publications show that meaningful conservative results may be obtained for boron or thermal mixing in PWRs with grids as coarse as that utilized here, provided that higher order discretization schemes are used to minimize numerical diffusion. The obtained results indicate an apparently strong influence of the scenario in the behavior of the injection process. The normal operation simulation shows that virtually all boron solution flows down to the Main Recirculation Pump inlet located directly below the boron inlet nozzle. The loss of offsite power simulation shows initially a spread of the boron solution over the entire sectional area of the lower part of the downcomer filled with colder water. This remaining effect of the ECCS injection lasts until all this water has left the downcomer. Above this region, the boron injection jet develops in a vertical streak, eventually resembling the injection of the normal operation scenario. Due to the initial spread, this boron injection will probably cause larger temporal and spatial concentration variations in the core. In both cases, these variations may cause reactivity transients and fuel damage due to local power escalation. To settle this issue, an analysis using an extended model containing the downcomer, the MRPs and the Lower Plenum will be carried out. Also, the simulation time will be extended to a scale of

Numerical simulation of boron injection in a BWR

International Nuclear Information System (INIS)

Tinoco, Hernan; Buchwald, Przemyslaw; Frid, Wiktor

2010-01-01

The present study constitutes a first step to understand the process of boron injection, transport and mixing in a BWR. It consists of transient CFD simulations of boron injection in a model of the downcomer of Forsmark's Unit 3 containing about 6 million elements. The two cases studied are unintentional start of boron injection under normal operation and loss of offsite power with partial ATWS leaving 10% of the core power uncontrolled. The flow conditions of the second case are defined by means of an analysis with RELAP5, assuming boron injection start directly after the first ECCS injection. Recent publications show that meaningful conservative results may be obtained for boron or thermal mixing in PWRs with grids as coarse as that utilized here, provided that higher order discretization schemes are used to minimize numerical diffusion. The obtained results indicate an apparently strong influence of the scenario in the behavior of the injection process. The normal operation simulation shows that virtually all boron solution flows down to the Main Recirculation Pump inlet located directly below the boron inlet nozzle. The loss of offsite power simulation shows initially a spread of the boron solution over the entire sectional area of the lower part of the downcomer filled with colder water. This remaining effect of the ECCS injection lasts until all this water has left the downcomer. Above this region, the boron injection jet develops in a vertical streak, eventually resembling the injection of the normal operation scenario. Due to the initial spread, this boron injection will probably cause larger temporal and spatial concentration variations in the core. In both cases, these variations may cause reactivity transients and fuel damage due to local power escalation. To settle this issue, an analysis using an extended model containing the downcomer, the MRPs and the Lower Plenum will be carried out. Also, the simulation time will be extended to a scale of several

High pressure synthesis and investigations of properties of boron allotropes and boron carbide

International Nuclear Information System (INIS)

Chuvashova, Irina

2017-01-01

This work aimed at the development of the high-pressure high-temperature (HPHT) synthesis of single crystals of boron allotropes and boron-rich compounds, which could be used further for precise investigations of their structures, properties, and behavior at extreme conditions. To summarize, the present work resulted in the HPHT synthesis of the first previously unknown non-icosahedral boron allotrope ζ-B. This finding confirmed earlier theoretical predictions, which stayed unproven for decades because of experimental challenges which couldn't be overcome until recently. Structural stability of α-B and β-B in the Mbar pressure range and B 13 C 2 up to 68 GPa was experimentally proven. Accurate measurements of the unit cell and B 12 icosahedra volumes of the stoichiometric boron carbide B 13 C 2 as a function of pressure led to conclusion that they undergo a similar reduction upon compression that is typical for covalently bonded solids. Neither 'molecular-like' nor 'inversed molecular-like' solid behavior upon compression was detected that has closed a long-standing scientific dispute. A comparison of the compressional behavior of B 13 C 2 with that of α-B and γ-B allotropes and B 4 C showed that it is determined by the types of bonding involved in the course of compression.

High pressure synthesis and investigations of properties of boron allotropes and boron carbide

Energy Technology Data Exchange (ETDEWEB)

Chuvashova, Irina

2017-06-12

This work aimed at the development of the high-pressure high-temperature (HPHT) synthesis of single crystals of boron allotropes and boron-rich compounds, which could be used further for precise investigations of their structures, properties, and behavior at extreme conditions. To summarize, the present work resulted in the HPHT synthesis of the first previously unknown non-icosahedral boron allotrope ζ-B. This finding confirmed earlier theoretical predictions, which stayed unproven for decades because of experimental challenges which couldn't be overcome until recently. Structural stability of α-B and β-B in the Mbar pressure range and B{sub 13}C{sub 2} up to 68 GPa was experimentally proven. Accurate measurements of the unit cell and B{sub 12} icosahedra volumes of the stoichiometric boron carbide B{sub 13}C{sub 2} as a function of pressure led to conclusion that they undergo a similar reduction upon compression that is typical for covalently bonded solids. Neither 'molecular-like' nor 'inversed molecular-like' solid behavior upon compression was detected that has closed a long-standing scientific dispute. A comparison of the compressional behavior of B{sub 13}C{sub 2} with that of α-B and γ-B allotropes and B{sub 4}C showed that it is determined by the types of bonding involved in the course of compression.

Impact of Boron pollution to Biota Marine aquatic

International Nuclear Information System (INIS)

Heni Susiati; Yarianto-SBS; Imam Hamzah; Fepriadi

2003-01-01

Power plants and industrial facilities can release potentially harmful chemicals, like boron through direct aqueous discharges or cycling of cooling water to aquatic ecosystems environmental at plant surrounding. Boron is an essential trace element for the growth of marine biota, but can be toxic in excessive amount. Therefore will adversely affect of growth, reproduction or survival. Toxicity to aquatic organism, including vertebrates, invertebrates and plants can vary depending on the organism's life stage and environment. It is recommended that the maximum concentration of total boron for the protection of marine aquatic life should not exceed 1,2 mg B/L. Early stages of life cycle are more sensitive to boron than later ones, and the use of reconstituted water shows higher toxicity in lower boron concentrations than natural waters. (author)

Preparation and electrical properties of boron and boron phosphide films obtained by gas source molecular beam deposition

Energy Technology Data Exchange (ETDEWEB)

Kumashiro, Y.; Yokoyama, T.; Sakamoto, T.; Fujita, T. [Yokohama National Univ. (Japan)

1997-10-01

Boron and boron phosphide films were prepared by gas source molecular beam deposition on sapphire crystal at various substrate temperatures up to 800{degrees}C using cracked B{sub 2}H{sub 6} (2% in H{sub 2}) at 300{degrees}C and cracked PH{sub 3} (20% in H{sub 2}) at 900{degrees}C. The substrate temperatures and gas flow rates of the reactant gases determined the film growth. The boron films with amorphous structure are p type. Increasing growth times lead to increasing mobilities and decreasing carrier concentrations. Boron phosphide film with maximum P/B ratio is obtained at a substrate temperature of 600{degrees}C, below and above which they become phosphorous deficient due to insufficient supply of phosphorus and thermal desorption of the phosphorus as P{sub 2}, respectively, but they are all n type conductors due to phosphorus vacancies.

Structural Modification in Carbon Nanotubes by Boron Incorporation

Directory of Open Access Journals (Sweden)

Handuja Sangeeta

2009-01-01

Full Text Available Abstract We have synthesized boron-incorporated carbon nanotubes (CNTs by decomposition of ferrocene and xylene in a thermal chemical vapor deposition set up using boric acid as the boron source. Scanning and transmission electron microscopy studies of the synthesized CNT samples showed that there was deterioration in crystallinity and improvement in alignment of the CNTs as the boron content in precursor solution increased from 0% to 15%. Raman analysis of these samples showed a shift of ~7 cm−1in wave number to higher side and broadening of the G band with increasing boron concentration along with an increase in intensity of the G band. Furthermore, there was an increase in the intensity of the D band along with a decrease in its wave number position with increase in boron content. We speculate that these structural modifications in the morphology and microstructure of CNTs might be due to the charge transfer from boron to the graphite matrix, resulting in shortening of the carbon–carbon bonds.

Boron isotopes in geothermal systems

International Nuclear Information System (INIS)

Aggarwal, J.

1997-01-01

Boron is a highly mobile element and during water-rock reactions, boron is leached out of rocks with no apparent fractionation. In geothermal systems where the water recharging the systems are meteoric in origin, the B isotope ratio of the geothermal fluid reflects the B isotope ratio of the rocks. Seawater has a distinctive B isotope ratio and where seawater recharges the geothermal system, the B isotope ratio of the geothermal system reflects the mixing of rock derived B and seawater derived B. Any deviations of the actual B isotope ratio of a mixture reflects subtle differences in the water-rock ratios in the cold downwelling limb of the hydrothermal system. This paper will present data from a variety of different geothermal systems, including New Zealand; Iceland; Yellowston, USA; Ibusuki, Japan to show the range in B isotope ratios in active geothermal systems. Some of these systems show well defined mixing trends between seawater and the host rocks, whilst others show the boron isotope ratios of the host rock only. In geothermal systems containing high amounts of CO 2 boron isotope ratios from a volatile B source can also be inferred. (auth)

A colorimetric determination of boron in biological sample for boron neutron capture therapy

International Nuclear Information System (INIS)

Camilo, M.A.P.; Tomac Junior, U.

1989-01-01

The boron neutron capture therapy (BNCT) has shown better prognosis in the treatment of gliomas and glioblastomas grade III and IV than other therapies. During the treatment of levels of Na 2 10 B 12 H 11 S H must be known in several compartments of the organism and with this purpose the method of colorimetric determination of boron using curcumin was established. This method is simples, reproducible and has adequate sensitivity for this control. (author). 7 refs, 3 figs, 1 tab

Flame-photometric determination of boron in alloys with chromatographic separation

International Nuclear Information System (INIS)

Telegin, G.F.; Popandopulo, Yu.I.; Grazhuiene, S.S.

1983-01-01

A study was made on the possibility of using flame-photometric method for boron determination in iron base alloys. The method of extraction chromatography was used for boron separation from iron. It is possible to reliably determine boron in Fesub(x)Bsub(100-x) alloys only at a concentration ratio of iron to boron <=0.2. The technique for determination of boron in Fesub(x)Bsub(100-x) alloys was developed on the base of the conducted investigation

Flame-photometric determination of boron in alloys with chromatographic separation

Energy Technology Data Exchange (ETDEWEB)

Telegin, G.F.; Popandopulo, Yu.I.; Grazhuiene, S.S. (AN SSSR, Chernogolovka. Inst. Fiziki Tverdogo Tela)

1983-01-01

A study was made on the possibility of using flame-photometric method for boron determination in iron base alloys. The method of extraction chromatography was used for boron separation from iron. It is possible to reliably determine boron in Fesub(x)Bsub(100-x) alloys only at a concentration ratio of iron to boron <=0.2. The technique for determination of boron in Fesub(x)Bsub(100-x) alloys was developed on the base of the conducted investigation.

The effect of the boron source composition ratio on the adsorption performance of hexagonal boron nitride without a template

Energy Technology Data Exchange (ETDEWEB)

Zhang, Ning, E-mail: zhangning5832@163.com; Zhang, Tong; Kan, Hongmin; Wang, Xiaoyang; Long, Haibo; Cui, Xingyu

2015-08-01

An inexpensive boric acid (H{sub 3}BO{sub 3}) and borax (Na{sub 2}B{sub 4}O{sub 7}·10H{sub 2}O) mix was used as a source of boron with different composition ratios, and urea was used as a nitrogen source, in flowing ammonia atmosphere, for the preparation of hexagonal boron nitride (h-BN) with different micro-morphologies. Under a certain synthesis process, the effects of the molar ratio of borax and boric acid (or simply the boron source composition ratio for short) on the phase composition of the sample were studied; the work also explored the effect of boron source composition ratio on the micro-morphology, adsorption desorption isotherm and specific surface area of the h-BN powder. The main purpose of this work was to determine the optimum composition ratio of preparing spherical mesoporous h-BN and ensure that the micro-mechanism underpinning the formation of spherical mesoporous h-BN was understood. The results showed that at the optimum boron source composition ratio of 1:1, globular mesoporous spheres with a diameter of approximately 600–800 nm could be obtained with the highest pore volume and specific surface area (230.2 m{sup 2}/g). - Graphical abstract: Display Omitted - Highlights: • Spherical h-BN was synthesized by controlling the boron source composition ratio. • Without extra spherical template, solid Na{sub 2}O was equal to a spherical template. • At boron source composition ratio of 1:1, h-BN had best adsorption performance.

Boron Removal in Seawater Reverse Osmosis System

KAUST Repository

Rahmawati, Karina

2011-07-01

Reverse osmosis successfully proves to remove more than 99% of solute in seawater, providing fresh water supply with satisfied quality. Due to some operational constraints, however, some trace contaminants removal, such as boron, cannot be achieved in one pass system. The stringent criterion for boron from World Health Organization (WHO) and Saudi Arabia local standard (0.5 mg/l) is hardly fulfilled by single pass sea water reverse osmosis (SWRO) plants. Some design processes have been proposed to deal with boron removal, but they are not economically efficient due to high energy and chemical consumption. The objective of this study was to study boron removal by different reverse osmosis membranes in two pH conditions, with and without antiscalant addition. Thus, it was expected to observe the possibility of operating single pass system and necessity to operate two pass system using low energy membrane. Five membrane samples were obtained from two different manufacturers. Three types of feed water pH were used, pH 8, pH 10, and pH 10 with antiscalant addition. Experiment was conducted in parallel to compare membrane performance from two manufacturers. Filtration was run with fully recycle mode for three days. Sample of permeate and feed were taken every 12 hours, and analyzed for their boron and TDS concentration. Membrane samples were also tested for their surface charge. The results showed that boron rejection increases as the feed pH increases. This was caused by dissociation of boric acid to negatively charged borate ion and more negatively charged membrane surface at elevated pH which enhance boron rejection. This study found that single pass reverse osmosis system, with and without elevating the pH, may not be possible to be applied because of two reasons. First, permeate quality in term of boron, does not fulfill WHO and local Saudi Arabia regulations. Second, severe scaling occurs due to operation in alkaline condition, since Ca and Mg concentration are

Highly thermal conductive carbon fiber/boron carbide composite material

International Nuclear Information System (INIS)

Chiba, Akio; Suzuki, Yasutaka; Goto, Sumitaka; Saito, Yukio; Jinbo, Ryutaro; Ogiwara, Norio; Saido, Masahiro.

1996-01-01

In a composite member for use in walls of a thermonuclear reactor, if carbon fibers and boron carbide are mixed, since they are brought into contact with each other directly, boron is reacted with the carbon fibers to form boron carbide to lower thermal conductivity of the carbon fibers. Then, in the present invention, graphite or amorphous carbon is filled between the carbon fibers to provide a fiber bundle of not less than 500 carbon fibers. Further, the surface of the fiber bundle is coated with graphite or amorphous carbon to suppress diffusion or solid solubilization of boron to carbon fibers or reaction of them. Then, lowering of thermal conductivity of the carbon fibers is prevented, as well as the mixing amount of the carbon fiber bundles with boron carbide, a sintering temperature and orientation of carbon fiber bundles are optimized to provide a highly thermal conductive carbon fiber/boron carbide composite material. In addition, carbide or boride type short fibers, spherical graphite, and amorphous carbon are mixed in the boron carbide to prevent development of cracks. Diffusion or solid solubilization of boron to carbon fibers is reduced or reaction of them if the carbon fibers are bundled. (N.H.)

Design, Fabrication and Performance of Boron-Carbide Control Elements

International Nuclear Information System (INIS)

Brammer, H.A.; Jacobson, J.

1964-01-01

A control blade design, incorporating boron-carbide (B 4 C) in stainless-steel tubes, was introduced into service in boiling water reactors in April 1961. Since that time this blade has become the standard reference control element in General Electric boiling-water reactors, replacing the 2% boron-stainless-steel blades previously used. The blades consist of a sheathed, cruciform array of small vertical stainless-steel tubes filled with compácted boron-carbide powder. The boron-carbide powder is confined longitudinally into several independent compartments by swaging over ball bearings located inside the tubes. The development and use of boron-carbide control rods is discussed in five phases: 1. Summary of experience with boron-steel blades and reasons for transition to boron-carbide control; 2. Design of the boron-carbide blade, beginning with developmental experiments, including early measurements performed in the AEC ''Control Rod Material and Development Program'' at the Vallecitos Atomic Laboratory, through a description of the final control blade configuration; 3. Fabrication of the blades and quality control procedures; 4. Results of confirmatory pre-operational mechanical and reactivity testing; and 5. Post-operational experience with the blades, including information on the results of mechanical inspection and reactivity testing after two years of reactor service. (author) [fr

Aktivitas Vermisidal dan Ovisidal Daun Biduri (Calotropis Spp. Terhadap Cacing Fasciola Gigantica Secara In Vitro

Directory of Open Access Journals (Sweden)

Gilang Kala Maulana

2015-08-01

Full Text Available Penelitian ini bertujuan untuk mengetahui aktivitas vermisidal dan ovisidal daun Biduri (Calotropis spp. terhadap cacing F. gigantica. Sampel yang digunakan dalam penelitian ini yaitu telur dan cacing F. gigantica yang diperoleh dari Rumah Potong Hewan Pesanggaran dan daun biduri diambil dari pantai Sanur, Denpasar Bali. Konsentrasi daun biduri dibuat menggunakan daun segar yang dihancurkan dan kemudian dicampurkan dengan cairan empedu untuk vermisidal dan aquades untuk ovisidal. Konsentrasi yang digunakan dalam penelitian ini yaitu 2,5%, 5%, 7,5%, dan 10%. Pengujian dilakukan secara in vitro dengan menggunakan lima perlakuan dan empat kali ulangan. Pengamatan vermisidal dilakukan setiap 30 menit sedangkan untuk ovisidal dilakukan pada hari ke-21 dan ke-28. Hasil dari penelitian didapatkan konsentrasi daun biduri (2,5%, 5%, 7,5%, dan 10% pada masing-masing kelompok perlakuan memiliki pengaruh vermisidal, tidak berbeda nyata (P>0.05 terhadap satu dengan yang lainnya. Efek ovisidal pada hari ke-21 dan ke-28 didapatkan adanya pengaruh yang nyata (P<0.05 terhadap daya hambat tetas telur cacing F. gigantica. Disimpulkan bahwa daun biduri memiliki aktivitas vermisidal dan ovisidal terhadap cacing dan telur F. gigantica. Konsentrasi yang paling efektif untuk vermisidal dan ovisidal terhadap cacing F. gigantica adalah 5%.

Analisis Pengaruh Human Capital Terhadap Kinerja Perusahaan (Studi Empiris pada Kantor Akuntan Publik di Indonesia

Directory of Open Access Journals (Sweden)

Martina Dwi Puji Astri Ongkorahardjo

2008-01-01

Full Text Available Human capital is of the intellectual capital components owned by a company. This study evaluates if individual capability and organizational climate affect business performance partially and simultaneously. We use public accounting firms as our subjects.. Our study shows that individual capability and organizational climate respectively influence performance in public accounting firms. Additionally, these two factors simultaneously affect performance. Overall individual capability shows stronger relationship to performance compared to organizational climate. Abstract in Bahasa Indonesia: Human capital sebagai salah satu komponen utama dari intellectual capital (intangible asset yang dimiliki oleh perusahaan. Penelitian ini menggunakan obyek kantor akuntan publik Penelitian ini berusaha menguji apakah individual capability dan the organizational climate yang merupakan komponen dari human capital memiliki pengaruh yang signifikan terhadap kinerja perusahaan kantor akuntan publik baik secara individual (parsial maupun secara simultan. Hasil penelitian menunjukkan bahwa pertama, individual capability berpengaruh signifikan terhadap kinerja kantor akuntan publik. Kedua, the organizational climate berpengaruh signifikan terhadap kinerja kantor akuntan publik. Ketiga, individual capability dan the organizational climate berpengaruh signifikan secara bersama-sama terhadap kinerja kantor akuntan publik. Pengujian juga membuktikan bahwa individual capability adalah variabel yang mempunyai pengaruh paling besar terhadap kinerja kantor akuntan publik. Kata kunci: Human capital, individual capability, the organizational climate.

PENGARUH PEMANFAATAN SOSIAL MEDIA, MOTIVASI DAN PENGETAHUAN TERHADAP MINAT BERWIRAUSAHA PADA MAHASISWA EKONOMI DI UNIVERSITAS MUHAMMADIYAH SIDOARJO

Directory of Open Access Journals (Sweden)

Muhammad Hasym Alfaruk

2017-03-01

Full Text Available Penelitian ini bertujuan untuk menganalisis pengaruh pemanfaan sosial media, motivasi dan pengetahuan terhadap minat berwirausaha pada mahasiswa Ekonomi Universitas Muhammadiyah Sidoarjo baik secara parsial maupun simultan. Penelitian yang dilakukan merupakan penelitian kuantitatif. Populasi dalam penelitian ini mahasiswa Ekonomi  angkatan tahun 2009-2010 sampai  sebanyak 650 dengan jumlah sampel sebanyak 247 mahasiswa. Metode analisis data menggunakan teknik analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa secara parsial pemanfaatan sosial media dan motivasi berpengaruh signifikan terhadap minat berwirausaha pada mahasiswa Ekonomi Universitas Muhammadiyah Sidoarjo, sedangkan Pengetahuan tidak memiliki pengaruh terhadap minat berwirausaha pada  mahasiswa Ekonomi Universitas Muhammadiyah Sidoarjo. Secara simultan pemanfaatan sosial media, motivasi dan pengetahuan berpengaruh signifikan terhadap minat berwirausaha pada mahasiswa Ekonomi Universitas Muhammadiyah Sidoarjo.

Boron-carbide-aluminum and boron-carbide-reactive metal cermets. [B/sub 4/C-Al

Science.gov (United States)

Halverson, D.C.; Pyzik, A.J.; Aksay, I.A.

1985-05-06

Hard, tough, lighweight boron-carbide-reactive metal composites, particularly boron-carbide-aluminum composites, are produced. These composites have compositions with a plurality of phases. A method is provided, including the steps of wetting and reacting the starting materials, by which the microstructures in the resulting composites can be controllably selected. Starting compositions, reaction temperatures, reaction times, and reaction atmospheres are parameters for controlling the process and resulting compositions. The ceramic phases are homogeneously distributed in the metal phases and adhesive forces at ceramic-metal interfaces are maximized. An initial consolidated step is used to achieve fully dense composites. Microstructures of boron-carbide-aluminum cermets have been produced with modules of rupture exceeding 110 ksi and fracture toughness exceeding 12 ksi..sqrt..in. These composites and methods can be used to form a variety of structural elements.

EKSPERIMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION (GI DAN THINK PAIR AND SHARE (TPS PADA MATERI SISTEM PERSAMAAN LINEAR DITINJAU DARI SIKAP MAHASISWA TERHADAP MATEMATIKA

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Swasti Maharani

2014-02-01

Sampel penelitian diambil dengan menggunakan teknik cluster random sampling . Data penelitian dianalisis dengan menggunakan analisis dua arah tidak seimbang varians pada tingkat signifikansi 5 %. Hasil penelitian ini menunjukkan bahwa : ( 1 model pembelajaran GI dan TPS menghasilkan prestasi belajar yang baik yang sama dalam matematika , namun kedua hasil dalam prestasi belajar yang lebih baik dalam matematika dibandingkan dengan model pembelajaran konvensional , ( 2 prestasi belajar matematika dengan sikap positif terhadap matematika adalah lebih baik dari itu dengan sikap netral dan negatif terhadap matematics , bahwa dengan sikap netral terhadap matematics adalah lebih baik dari itu dengan sikap negatif terhadap matematika , (3 pada masing-masing siswa sikap terhadap jenis matematika , GI dan model pembelajaran TPS hasil dalam pencapaian yang sama baik belajar di matematika , tapi baik mengakibatkan prestasi belajar yang lebih baik dalam matematika daripada model pembelajaran konvensional , (4 pada masing-masing model pembelajaran , prestasi belajar dengan sikap positif terhadap matematika matematika adalah lebih baik dari itu dengan netral dan sikap negatif terhadap matematics , bahwa dengan sikap netral terhadap matematics adalah lebih baik dari itu dengan sikap negatif terhadap matematika.

Higher boron rejection with a new TFC forward osmosis membrane

KAUST Repository

Valladares Linares, Rodrigo; Li, Zhenyu; Sarp, Sarper; Park, Y. G.; Amy, Gary L.; Vrouwenvelder, Johannes S.

2014-01-01

Due to the stringent limits for boron in drinking and irrigation water, water treatment facilities have to incur additional treatment to remove boron down to a safe concentration. Forward osmosis (FO) is a membrane technology that may reduce the energy required to remove boron present in seawater. In direct FO desalination hybrid systems, fresh water is recovered from seawater using a recoverable draw solution, FO membranes are expected to show high boron rejection. This study focuses on determining the boron rejection capabilities of a new generation thin-film composite (TFC) FO membrane compared to a first generation cellulose triacetate (CTA) FO membrane. The effects of water permeate flux, membrane structure, draw solute charge, and reverse solute flux on boron rejection were determined. For TFC and CTA FO membranes, experiments showed that when similar operating conditions are applied (e.g. membrane type and draw solute type) boron rejection decreases with increase in permeate flux. Reverse draw solute flux and membrane fouling have no significant impact on boron rejection. Compared to the first generation CTA FO membrane operated at the same conditions, the TFC FO membrane showed a 40% higher boron rejection capability and a 20% higher water flux. This demonstrates the potential for boron removal for new generation TFC FO membranes. © 2014 © 2014 Balaban Desalination Publications. All rights reserved.

Higher boron rejection with a new TFC forward osmosis membrane

KAUST Repository

Valladares Linares, Rodrigo

2014-07-17

Due to the stringent limits for boron in drinking and irrigation water, water treatment facilities have to incur additional treatment to remove boron down to a safe concentration. Forward osmosis (FO) is a membrane technology that may reduce the energy required to remove boron present in seawater. In direct FO desalination hybrid systems, fresh water is recovered from seawater using a recoverable draw solution, FO membranes are expected to show high boron rejection. This study focuses on determining the boron rejection capabilities of a new generation thin-film composite (TFC) FO membrane compared to a first generation cellulose triacetate (CTA) FO membrane. The effects of water permeate flux, membrane structure, draw solute charge, and reverse solute flux on boron rejection were determined. For TFC and CTA FO membranes, experiments showed that when similar operating conditions are applied (e.g. membrane type and draw solute type) boron rejection decreases with increase in permeate flux. Reverse draw solute flux and membrane fouling have no significant impact on boron rejection. Compared to the first generation CTA FO membrane operated at the same conditions, the TFC FO membrane showed a 40% higher boron rejection capability and a 20% higher water flux. This demonstrates the potential for boron removal for new generation TFC FO membranes. © 2014 © 2014 Balaban Desalination Publications. All rights reserved.

PENGARUH EFIKASI DIRI, MINAT KERJA, DAN BIMBINGAN KARIR TERHADAP KESIAPAN KERJA SISWA smk PROGRAM KEHLIAN AKUNTANSI

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Alfi Kurniawati

2016-02-01

Full Text Available Penelitian ini bertujuan untuk menguji pengaruh efikasi diri, minat kerja, dan bimbingan karir kesiapan kerja siswa baik secara simultan maupun parsial. Populasi dan sampel pada penelitian ini adalah seluruh siswa kelas XI Program Keahlian Akuntansi. Metode pengumpulan data dalam penelitian ini menggunakan metode angket/kuesioner, dokumentasi, dan wawancara. Variabel dependen pada penelitian ini yaitu kesiapan kerja. Variabel independennya yaitu efikasi diri, minat kerja, dan bimbingan karir. Hasil uji hipotesis simultan menunjukkan bahwa ada pengaruh efikasi diri, minat kerja, dan bimbingan karir terhadap kesiapan kerja. Hasil uji hipotesis secara parsial menunjukkan bahwa ada pengaruh efikasi diri terhadap kesiapan kerja, ada pengaruh minat kerja terhadap kesiapan kerja dan ada pengaruh bimbingan karir terhadap kesiapan kerja. Simpulan dari penelitian ini yaitu efikasi diri, minat kerja, dan bimbingan karir berpengaruh terhadap kesiapan kerja secara simultan maupun secara parsial. Saran yang diberikan dalam penelitian ini adalah siswa hendaknya meningkatkan kesiapan kerja mereka, peningkatan terhadap efikasi diri siswa; peningkatan terhadap pemahaman mengenai minat siswa; dan guru hendaknya meningkatkan pelayanan bimbingan karir. This study aimed to examine the influence of self efficacy, work interest, and career guidance toward work readiness either simultaneously or partially. population and sample in this research were students of class XI Accounting. Data collection method in this research using questionnaires / questionnaire, documentation and interviews. The dependent variable in this research is work readiness. Independent variables namely self efficacy, work interest, and career guidance. Conclusions from this research that the self efficacy, work interest, and career guidance affect the work readiness either simultaneously or partially The suggestions are, based this research, students should improve their work readiness; improve

PENGARUH MODAL DAN VOLUME PENJUALAN TERHADAP KEMAMPULABAAN USAHA BAKUL IKAN WANITA DI PASAR TULEHU KECAMATAN SALAHUTU KABUPATEN MALUKU TENGAH

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Dwi Hariyanti

2008-06-01

Full Text Available Usaha yang sangat digeluti oleh kaum perempuan sebagai upaya membantu peningkatan perekonomian keluarga di Provinsi Maluku salah satunya adalah kegiataan usaha bakul ikan di kecamatan Salahutu Kabupaten Maluku Tengah. Usaha ini  sangat berpotensi, disebabkan oleh lokasi yang sangat strategis  sebagai daerah transit kecatan pulau Haruku dan pulau Saparua serta satu-satunya pasar terbesar di Kecamatan Salahutu sebagai tempat berbelanja masyarakat ketiga kecamatan tersebut. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh modal dan volume penjualan terhadap kemampulabaan serta untuk mengetahui dari dua variabel tersebut mana yang sangat berpengaruh signifikan. Metode analisis yang digunakan adalah analisis regresi liner berganda. Hasil penelitian menunjukkan bahwa modal memiliki pengaruh signifikan negatif terhadap kemampulabaan, sedangkan variabel volume penjulan berpengaruh signifikan positif terhadap kemampulabaan yang berarti kedua variabel tersebut secara simultan berpangaru signifikan terhadap kemampulabaan. Secara parsial variabel modal yang sangat berpengaruh signifikan terhadap kemampulabaan

KONTRIBUSI KETERLIBATAN SISWA DI UNIT PRODUKSI DAN EMPLOYABILITY SKILLS TERHADAP SELF EFFICACY SERTA DAMPAKNYA PADA MINAT BEKERJA SISWA SMK

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Fitria Nur Hasanah

2016-01-01

Full Text Available Tujuan penelitian untuk mengetahui kontribusi: (1 keterlibatan siswa di Unit Produksi/Jasa (UPJ dan employability skill secara simultan dan parsial terhadap self efficacy; (2 secara simultan dan parsial antara keterlibatan siswa di UPJ, employ-ability skills, dan self efficacy terhadap minat bekerja. Penelitian ini adalah jenis sur-vei korelasional. Populasi penelitian adalah siswa SMK kelas XII Kompetensi Keahli-an TKJ di Malang Raya. Teknik pengumpulan data dengan angket dan dianalisis de-ngan analisis jalur. Hasil penelitian ini adalah keterlibatan siswa di UPJ dan employ-ability skills secara simultan berkontribusi terhadap self efficacy sebesar 54,60%. Ke-mudian keterlibatan siswa di UPJ, employability skills, dan self efficacy secara simul-tan berkontribusi terhadap minat bekerja siswa sebesar 53,80%. Variabel keterlibatan siswa di UPJ, employability skills, dan self efficacy masing-masing juga berkontribusi terhadap minat bekerja.

Iron solubility in highly boron-doped silicon

International Nuclear Information System (INIS)

McHugo, S.A.; McDonald, R.J.; Smith, A.R.; Hurley, D.L.; Weber, E.R.

1998-01-01

We have directly measured the solubility of iron in high and low boron-doped silicon using instrumental neutron activation analysis. Iron solubilities were measured at 800, 900, 1000, and 1100thinsp degree C in silicon doped with either 1.5x10 19 or 6.5x10 14 thinspboronthinspatoms/cm 3 . We have measured a greater iron solubility in high boron-doped silicon as compared to low boron-doped silicon, however, the degree of enhancement is lower than anticipated at temperatures >800thinsp degree C. The decreased enhancement is explained by a shift in the iron donor energy level towards the valence band at elevated temperatures. Based on this data, we have calculated the position of the iron donor level in the silicon band gap at elevated temperatures. We incorporate the iron energy level shift in calculations of iron solubility in silicon over a wide range of temperatures and boron-doping levels, providing a means to accurately predict iron segregation between high and low boron-doped silicon. copyright 1998 American Institute of Physics

Hot ductility behavior of boron microalloyed steels

International Nuclear Information System (INIS)

Lopez-Chipres, E.; Mejia, I.; Maldonado, C.; Bedolla-Jacuinde, A.; Cabrera, J.M.

2007-01-01

The current study analyses the influence of boron contents (between 29 and 105 ppm) on the hot ductility of boron microalloyed steels. For this purpose, hot tensile tests were carried out at different temperatures (700, 800, 900 and 1000 deg. C) at a constant true strain rate of 0.001 s -1 . In general, results revealed an improvement of the hot ductility of steels at increasing boron content. At 700, 900 and 1000 deg. C the ductility is higher than at 800 deg. C, where boron microalloyed steels exhibit a region of ductility loss (trough region). Likewise, dynamic recrystallization only occurred at 900 and 1000 deg. C. The fracture surfaces of the tested steels at temperatures giving the high temperature ductility regime show that the fracture mode is a result of ductile failure, whereas it is ductile-brittle failure in the trough region. Results are discussed in terms of dynamic recrystallization and boron segregation towards austenite grain boundaries, which may retard the formation of pro-eutectoid ferrite and increase grain boundary cohesion

A colorimetric determination of boron in biological sample for boron neutron capture therapy (BNCT)

International Nuclear Information System (INIS)

Camillo, M.A.P.; Tomac Junior, U.

1990-01-01

The boron neutron capture therapy (BNCT) has shown better prognosis in the treatment of glyemas and gluoblastomas grade III and IV than other therapies. During the treatment the levels of Na 2 10 B 12 H 11 SH must be known in several compartiments of the organism and with this purpose the method of colorimetric determination of boron using curcumine was established. This method is simple, reprodutible and adequate sensitivity for this control. (author) [pt

An overview the boron dilution issue in PWRs

International Nuclear Information System (INIS)

Hyvaerinen, J.

1994-01-01

The presentation is an overview of boron (boric acid) dilution in pressurized water reactors (PWRs). Boric acid has been widely used in PWRs as a dissolved poison, as one of the main reactivity controlling means, for a long time, from nearly but not quite from the beginning of the design, construction and operation of PWRs in the present-day sense. The specific safety issue, namely the risk of uncontrolled reactivity insertion due to inadvertent boron dilution, is discussed first, followed by a brief look on the history of boron usage in PWRs. A discussion of boron dilution phenomenology is presented next in general terms. Some particular concerns that boron dilution phenomena arouse in the minds of a regulator will also be presented before concluding with a brief look on the future of dissolved poisons. (11 refs.)

Pengaruh Relationship Marketing terhadap Loyalitas Nasabah pada PT. Bank Pembiayaan Rakyat Syariah (BPRS Berkah Dana Fadhlillah Di Kabupaten Kampar Provinsi Riau

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yusriadi yusriadi

2017-09-01

Full Text Available Abstrak: Penelitian ini untuk mengetahui pengaruh relationship marketing yang variabelnya meliputi financial benefit, social benefit dan structural benefit terhadap loyalitas nasabah pada PT. BPRS Berkah Dana Fadhlillah Kabupaten Kampar baik secara parsial maupun secara simultan. Penelitian ini juga bertujuan untuk mengetahui dan menjelaskan berapa persen ketiga variabel tersebut menjelaskan pengaruhnya terhadap loyalitas nasabah. Dengan menggunakan alat analisa regresi berganda, di peroleh hasil variabel financial benefit berpengaruh secara positif terhadap loyalitas nasabah dengan nilai t hitung sebesar 8,763 > t Tabel 1,9796 dan nilai signifikansi sebesar 0,000 < 0,05. Variabel social benefit hasilnya berpengaruh secara negatif terhadap loyalitas nasabah dengan nilai t hitung sebesar 2,234 > t Tabel 1,9796, nilai t hitung negatif, dan nilai signifikansi sebesar 0,027 < 0,05. Variabel structural benefit hasilnya berpengaruh secara negatif terhadap loyalitas nasabah dengan nilai t hitung sebesar 2,332 > t Tabel 1,9796, nilai t hitung negatif, dan nilai signifikansi sebesar 0,021 < 0,05. Untuk nilai F sebesar 29,105 > F Tabel sebesar 2,68 dengan nilai signifikansi sebesar 0,000 < 0,05. Sedangkan nilai determinasi nya yang di sesuaikan (Adjusted R Square sebesar 0,403 atau sebesar 40,3 %. Dari analisis data, secara parsial hasilnya financial benefit berpengaruh positif dan signifikan terhadap loyaltas nasabah. Social benefit berpengaruh negatif dan signifikan terhadap loyalitas nasabah. Social benefit berpengaruh negatif dan signifikan terhadap loyalitas nasabah. Sedangkan secara simultan financial benefit, social benefit dan structural benefit berpengaruh positif dan signifikan terhadap loyalitas nasabah.Kata Kunci : Relationship Marketing, Financial Benefit, Social Benefit, Structural Benefit dan Loyalitas Pelanggan

SIKAP GURU TAMAN KANAK-KANAK TERHADAP PEMBELAJARAN MATEMATIKA

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Sitti Hartinah DS, Teguh Setiawan

2013-05-01

Full Text Available Abstract: Kindergarten Teachers’ Attitudes toward Mathematics Learning. This study was aimed to know the attitudes of kindergarten teachers to mathematics teaching and learning. The study, carried out in the Regency of Tegal, took 340 kindergarten teachers into the pool of the sample (65% of the population of 523 teachers. Proportional random sampling was used in the selection of the sample. Questionnaires in the form of attitude scale were distributed to the sample to elicit their responses. t-test was used to analyze the differences of the attitudes and Croncbach’s Alpha was used to arrive at the reliability index. The study found out that, in general, kindergarten teachers  have positive attitudes towards the teaching and learning of mathematics. Abstract: Sikap Guru TK terhadap Pembelajaran Matematika. Penelitian ini bertujuan mengetahui sikap guru TK terhadap pembelajran matematika. Sampel sebanyak 340 dari 523 guru TK di Kabupaten Tegal (65% dari populasi yang diambil dengan menggunakan teknik rambang proporsional. Data dikum­pulkan dengan kuesioner berupa skala sikap yang dikembangkan dengan metode Likert. Pembobotan menggunakan deviasi normal. Kriteria pemilihan butir pernyataan terbaik menggunakan uji t yaitu uji kesa­maan dua rata-rata uji satu pihak dan analisis reliabilitas menggunakan Formula Croncbach’s Alpha. Hasilnya menunjukkan bahwa guru TK pada umumnya bersikap positif terhadap pembelajaran matematika.

KERENTANAN IKAN NILA SULTANA, RED NIFI, SRIKANDI DAN AUREUS TERHADAP INFEKSI BAKTERI Streptococcus agalactiae

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Rita Febrianti

2015-06-01

Full Text Available Penelitian ini bertujuan untuk menguji kerentanan empat strain ikan nila, yaitu: Sultana, Red NIFI, Srikandi, dan Aureus terhadap infeksi bakteri Streptococcus agalactiae. Ikan uji berukuran 15-20 g/ekor dan berasal dari populasi, serta batch umur yang sama. Infeksi bakteri S. agalactiae dilakukan secara buatan melalui penyuntikan intra peritoneal (IP pada dosis 104 cfu/mL, sedangkan kelompok kontrol diinjeksi dengan larutan Phosphate Buffered Saline (PBS. Pengamatan dilakukan terhadap gejala klinis dan mortalitas ikan uji yang berlangsung selama 14 hari. Hasil penelitian menunjukkan bahwa seluruh strain ikan nila mengalami respons yang sama terhadap infeksi bakteri S. agalactie yang ditandai dengan munculnya gejala klinis seperti: warna gelap/menghitam, sirip geripis, nekrosa pada mulut, mata menonjol, opaque, ulcer, dan dropsy. Kerentanan tertinggi terhadap infeksi bakteri S. agalactiae yang dimanifestasikan dengan rataan persentase mortalitas ikan uji diperoleh pada ikan nila Aureus sebesar 72%, Sultana 50%, Srikandi 36%, Red NIFI sebesar 24%, dan kontrol tidak ada mortalitas. Setelah diuji tantang, kadar limfosit mengalami kenaikan, netrofil dan monosit mengalami penurunan.

PENGARUH NAUNGAN, ZAT PENGATUR TUMBUH , DAN TANAMAN INDUK TERHADAP PERAKARAN STEK JABON (Anthocephaus cadamba

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Agus Astho Pramono

2015-12-01

Full Text Available Teknologi pembiakan vegetatif perlu dikuasai dalam perbanyakan masal terhadap klon terseleksi yang akan meningkatkan kualitas dan kuantitas produksi hutan tanaman. Penelitian ini bertujuan untuk mengetahui pengaruh intensitas naungan, dosis IBA dan tanaman induk terhadap perakaran stek jabon. Intensitas naungan yang diuji adalah: tanpa naungan, naungan (25%, dan dosis IBA yang diuji adalah: 0 ppm, 750 ppm, 1500 ppm, dan 3000 ppm. Asal tanaman induk yaitu: bibit berasal dari biakan stek, dan bibit berasal dari biakan biji. Hasil penelitian menunjukkan bahwa penggunaan IBA dari konsentrasi 0 sampai 3000 ppm tidak berpengaruh secara nyata terhadap kualitas perakaran stek jabon. Faktor yang berpengaruh nyata terhadap perkaran stek adalah perlakuan naungan. Perlakuan naungan mampu meningkatkan kualitas perkaran stek jabon. Stek yang ditanam pada media dengan naungan 25% mampu meningkatkan keberhasilan hidup stek dari 57,5% menjadi 74,38% dan nilai panjang akar meningkat dari 9,75 cm menjadi 16,37 cm. Pucuk jabon dari bibit yang dibiakkan secara stek mampu meningkatkan keberhasilan stek dibandingkan dengan pucuk dari bibit biakan generatif.

Effect of Dissolved Silica on Immobilization of Boron by Magnesium Oxide

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Shoko Nozawa

2018-02-01

Full Text Available The effect of silica on the immobilization reaction of boron by magnesium oxide was investigated by laboratory experiments. In the absence of silica, due to dissolution of the magnesium oxide, boron was removed from solutions by the precipitation of multiple magnesium borates. In the presence of silica, magnesium silica hydrate (M-S-H was formed as a secondary mineral, which takes up boron. Here 11B magic-angle spinning nuclear magnetic resonance (MAS-NMR and Fourier transform infrared spectrometer (FT-IR data show that a part of the boron would be incorporated into M-S-H structures by isomorphic substitution of silicon. Another experiment where magnesium oxide and amorphous silica were reacted beforehand and boron was added later showed that the shorter the reaction time of the preceding reaction, the higher the sorption ratio of boron. That is, boron was incorporated into the M-S-H mainly by coprecipitation. The experiments in the study here show that the sorption of boron in the presence of silica is mainly due to the incorporation of boron during the formation of the M-S-H structure, which suggests that boron would not readily leach out, and that stable immobilization of boron can be expected.

PERAN KESIAPAN BELAJAR DALAM MEMEDIASI PENGARUH KESIAPAN BELAJAR DAN FASILITAS BELAJAR TERHADAP HASIL BELAJAR AKUNTANSI

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Dina Tsabitah

2016-02-01

Full Text Available Penelitian ini bertujuan untuk menguji pengaruh kreativitas dan fasilitas melalui kesiapan belajar terhadap hasil belajar baik secara langsung maupun tidak langsung. Populasi dan sampel pada penelitian ini adalah seluruh siswa kelas XI IPS MAN 1 Semarang. Metode pengumpulan data dalam penelitian ini menggunakan metode angket/kuesioner dan dokumentasi. Variabel dependen pada penelitian ini yaitu hasil belajar. Variabel independennya yaitu kreativitas siswa dan fasilitas belajar. Variabel interveningnya adalah kesiapan belajar. Hasil uji hipotesis parsial menunjukkan bahwa ada pengaruh kreativitas siswa terhadap hasil belajar akuntansi, fasilitas belajar terhadap hasil belajar akuntansi dan kesiapan belajar terhadap hasil belajar akuntansi. Hasil uji hipotesis secara tidak langsung menunjukkan bahwa ada pengaruh kreativitas siswa terhadap hasil belajar melalui kesiapan belajar dan ada pengaruh fasilitas belajar terhadap hasil belajar melalui kesiapan belajar. Simpulan dari penelitian ini yaitu kreativitas siswa, fasilitas belajar dan kesiapan belajar secara parsial mempengaruhi hasil belajar akuntansi kemudian kreativitas siswa dan fasilitas belajar berpengaruh terhadap hasil belajar akuntansi melalui kesiapan belajar. Saran yang diberikan dalam penelitian ini adalah pihak sekolah dan pihak rumah mulai memperhatikan perkembangan kreativitas anak dan terpenuhinya kebutuhan fasilitas belajar serta kesiapan belajar pada siswa. This study aimed to examine the influence of student creativity, school facilities, and study readiness toward learning outcome of XI IPS student at MAN 1 Semarang and then the positive influence student creativity, school facilities through study readiness as mediating variable toward accounting learning outcome. Data collection method in this research using questionnaires / questionnaire and documentation. The dependent variable in this research is accounting learning outcome. Independent variables namely student creativity

KORELASI KREATIVITAS DAN MOTIVASI KERJA GURU TERHADAP PENINGKATAN MUTU PEMBELAJARAN

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Muh Nashiruddin

2016-10-01

Full Text Available Penelitian ini bertujuan untuk mengetahui korelasi antara: 1 kreativitas guru PAI terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi Pekerti  , 2 motivasi kerja guru PAI terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi Pekerti , dan 3 kreativitas dan motivasi kerja guru terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi. Penelitian ini menggunakan metode deskripsi korelasional dengan melibatkan 33 orang sampel yang dipilih secara dengan metode sensus.  Teknik pengumpulan data dilakukan dengan angket/kuesioner. Teknikanalisis data diawali dengan  uji prasyarat yaitu uji normalitas dan linieritas. Uji hipotesis menggunakanuji regresi sederhana danuji regresi ganda. Hasil penelitian menunjukkan ; 1 Kreativitas guru berpengaruh terhadap peningkatan mutu pembelajaran Pendidikan Agama Islam dan Budi Pekerti.  2  motivasi kerja guru  berpengaruh terhadap peningkatan mutu pembelajaran Pendidikan Agama Islam dan Budi Pekerti.  3 kreativitas guru  dan motivasi kerja guru secara bersama-sama atau simultan berpengaruh terhadap mutu pembelajaran.  Hasil analisis juga  menunjukkan bahwa rata-rata nilai dari ketiga variabel tersebut hanya dapat dimasukkan dalam kategori sedang, sehingga  untuk meningkatkan kinerja guru dalam mengajar perlu diperhatikan faktor-faktor lain seperti: gaji, jaminan kerja, jaminan hari tua, penghargaan atas prestasi kerja, dan sebagainya.   Kata kunci: kreativitas, motivasi, mutupembelajaran   Abstract [The Relationship Between Teachers’ Creativity and Motivation Toward Learning Improvement]. This research aim at determine the correlation between the creativity of teachers on the improvement of learning quality of religious education and behavior, the work motivation of teachers on the improvement of learning quality of religious education and behavior, and  the creativity and the work motivation of eachers on the improvement  of learning quality of religious education and

PENGARUH MEDIA KOMIK TERHADAP PENGETAHUAN KESEHATAN MATA PADA ANAK

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Abduh Ridho

2017-07-01

Full Text Available Abstract: Influence Of Comic For Children Health Is Knowledge Eye. The prevalence of eye disorders cases is very high, about 13 million cases in children aged 5-15 years. There are several factors caused the eye disorders in children, one of them is lack of knowledge about determining eye disorders prevention behaviour. The purpose of this study was to see the effect of comic media on eye health knowledge in children. The research design used was pre-experimental design with one group pretest-post-test design with 36 samples. The results of this study concluded that comic effect on eye health knowledge on children (p-value = 0,000 <0,05 with mean at pretest 55,00 and mean at posttest 81,48. So the comic effect on the child’s knowledge about eye health disorders. Health education efforts can utilize comic has media as a media of health promotion during school healthcare activities of school children. Abstrak: Pengaruh Media Komik Terhadap Pengetahuan Kesehatan Mata Pada Anak. Prevalensi kasus gangguan mata anak sangat tinggi, sekitar 13 juta kasus pada anak usia 5-15 tahun. Ada beberapa faktor yang melatarbelakangi gangguan mata pada anak, salah satunya yaitu kurangnya pengetahuan mengenai kebiasaan/ perilaku yang dapat mencegah gangguan mata. Tujuan penelitian ini yaitu untuk melihat pengaruh media komik terhadap pengetahuan kesehatan mata pada anak. Desain penelitian yang digunakan adalah pre-experimental design dengan rancangan penelitian one group pre-test and post-test design dengan jumlah sampel sebanyak 36 sampel. Hasil penelitian ini menyimpulkan bahwa komik berpengaruh terhadap pengetahuan kesehatan mata pada anak (p value = 0,000 < 0,05 dengan mean pada saat pre-test 55,00 dan mean saat post-test 81,48. Jadi, komik berpengaruh terhadap pengetahuan anak mengenai gangguan kesehatan mata. Upaya pendidikan kesehatan dapat memanfaatkan media komik sebagai media promosi kesehatan saat kegiatan penjaringan kesehatan anak sekolah.

{sup 1}H and {sup 10}B NMR and MRI investigation of boron- and gadolinium-boron compounds in boron neutron capture therapy

Energy Technology Data Exchange (ETDEWEB)

Bonora, M., E-mail: marco.bonora@unipv.it [Physics Department ' A. Volta' , University of Pavia, Via Bassi 6, 27100 Pavia (Italy)] [CNISM Unit (Italy); Corti, M.; Borsa, F. [Physics Department ' A. Volta' , University of Pavia, Via Bassi 6, 27100 Pavia (Italy)] [CNISM Unit (Italy); Bortolussi, S.; Protti, N.; Santoro, D.; Stella, S.; Altieri, S. [Nuclear and Theoretical Physics Department, University of Pavia, Via Bassi 6, 27100 Pavia (Italy)] [INFN Pavia (Italy); Zonta, C.; Clerici, A.M.; Cansolino, L.; Ferrari, C.; Dionigi, P. [Surgical Sciences Department, Experimental Surgery Laboratory, University of Pavia, Pavia (Italy); Porta, A.; Zanoni, G.; Vidari, G. [Organic Chemistry Department, University of Pavia, Via Taramelli 10, 27100 Pavia (Italy)

2011-12-15

{sup 10}B molecular compounds suitable for Boron Neutron Capture Therapy (BNCT) are tagged with a Gd(III) paramagnetic ion. The newly synthesized molecule, Gd-BPA, is investigated as contrast agent in Magnetic Resonance Imaging (MRI) with the final aim of mapping the boron distribution in tissues. Preliminary Nuclear Magnetic Resonance (NMR) measurements, which include {sup 1}H and {sup 10}B relaxometry in animal tissues, proton relaxivity of the paramagnetic Gd-BPA molecule in water and its absorption in tumoral living cells, are reported.

Internal stress control of boron thin film

Energy Technology Data Exchange (ETDEWEB)

Satomi, N.; Kitamura, M.; Sasaki, T.; Nishikawa, M. [Osaka Univ., Suita (Japan). Graduate Sch. of Eng.

1998-09-01

The occurrence of stress in thin films has led to serious stability problems in practical use. We have investigated the stress in the boron films to find the deposition condition of the boron films with less stress. It was found that the stress in the boron film varies sufficiently from compressive to tensile stress, that is from -1.0 to 1.4 GPa, depending on the evaporation conditions, such as deposition rate and the substrate temperature. Hydrogen ion bombardment resulted in the enhancement of the compressive stress, possibly due to ion peening effect, while under helium ion bombardment, stress relief was observed. The boron film with nearly zero stress was obtained by the evaporation at a deposition rate of 0.5 nm s{sup -1} and substrate temperature of 300 C. (orig.) 12 refs.

Internal stress control of boron thin film

International Nuclear Information System (INIS)

Satomi, N.; Kitamura, M.; Sasaki, T.; Nishikawa, M.

1998-01-01

The occurrence of stress in thin films has led to serious stability problems in practical use. We have investigated the stress in the boron films to find the deposition condition of the boron films with less stress. It was found that the stress in the boron film varies sufficiently from compressive to tensile stress, that is from -1.0 to 1.4 GPa, depending on the evaporation conditions, such as deposition rate and the substrate temperature. Hydrogen ion bombardment resulted in the enhancement of the compressive stress, possibly due to ion peening effect, while under helium ion bombardment, stress relief was observed. The boron film with nearly zero stress was obtained by the evaporation at a deposition rate of 0.5 nm s -1 and substrate temperature of 300 C. (orig.)

Investigations on the binary systems of boron with chromium, columbium, nickel, and thorium, including a discussion of the Phase TiB in the titanium-boron system

Energy Technology Data Exchange (ETDEWEB)

Andersson, L H; Kiessling, R

1950-01-01

Investigations on the binary systems chromium-, columbium-, nickel-, and thorium-boron are reported. The titanium-boron system is discussed, and it is shown that the phase TiB, previously assumed to have zincblende structure, probably has a face-centered titanium lattice with boron in the octahedral interstices. In the chromium-boron system, the structure of the eta phase has been determined. It has the composition Cr/sub 3/B/sub 4/ and is isomorphous with Ta/sub 3/B/sub 4/ and Mn/sub 3/B/sub 4/. Some data for the delta phase are also given. For the columbium-boron system, a phase analysis has been carried out. The structures of three of the intermediary phases, CbB, Cb/sub 3/B/sub 2/, and CbB/sub 2/ (with extended homogeneity range), have been determined. They are isomorphous with corresponding phases of the tantalum-boron system. A brief phase analysis of the nickel-boron system showed the existence of a phase with lower boron content than Ni/sub 2/B, which has not been previously reported. In the thorium-boron system a new phase, probably with a complicated structure, was found with a boron content of about 50 at. %.

Boron-containing thioureas for neutron capture therapy. Borhaltige Thioharnstoffe fuer die Neutroneneinfangtherapie

Energy Technology Data Exchange (ETDEWEB)

Ketz, H.

1993-10-21

Melanin is produced in large amounts in malignant melanotic melanomas. Because thiourea compounds are covalently incorporated into melanin during its biosynthesis, the preparation of boronated thiourea-derivatives is of particular interest for the BNCT (Boron Neutron Capture Therapy). Accumulation of boron in tumors by means of boronated thiourea-derivatives may therefore provide levels of [sup 10]B which are useful for BNCT. In BNCT the tumor containing the boron compound is irradiated with epithermal neutrons to generate He- and Li-nuclei from the [sup 10]B which can then destroy the tumor cells. Because of the short ranges of these particles (approximately one cell diameter) the damage will be almost exclusively confined to the tumor leaving normal tissue unharmed. High accumulation of 2-mercapto-1-methylimidazole (methimazole) in melanotic melanomas has been described in the literature. Boronated derivatives of methimazole were therefore synthesized. Boron was in the form of a boronic acid, a nido-carbonate and a mercaptoundeca hydro-closo-dodecaborate (BSH). The synthesis of the boron cluster derivatives of methimazole (nido-carborate- and BSH-derivatives) with 9 resp. 12 boron atoms in the molecule were expected to achieve higher concentrations of boron in the tumor than in the case of the boronic acid compound with its single boron atom. (orig.)

Boron content of South African surface waters: prelimenary assessment for irrigation

International Nuclear Information System (INIS)

Reid, P.C.; Davies, E.

1989-01-01

Boron, a naturally occuring constituent of surface and ground water, is an essential plant nutrient. However, at relatively low concentrations, boron becomes toxic to plant growth. In order to assess the boron status in South African surface waters, the Department of Water Affairs launched a long-term boron water quality assessment programme in 1985, encompassing the analysis of water samples taken at 91 sites throughout South Africa. Results to date indicate that the boron concentration in South African surface waters varies between 0,02 to 0,33 mg l -1 . At these concentrations even the most boron sensitive crops can be grown without fear of boron toxicity. 3 refs., 1 fig., 2 tabs

Additive Manufacturing of Dense Hexagonal Boron Nitride Objects

Energy Technology Data Exchange (ETDEWEB)

Marquez Rossy, Andres E [ORNL; Armstrong, Beth L [ORNL; Elliott, Amy M [ORNL; Lara-Curzio, Edgar [ORNL

2017-05-12

The feasibility of manufacturing hexagonal boron nitride objects via additive manufacturing techniques was investigated. It was demonstrated that it is possible to hot-extrude thermoplastic filaments containing uniformly distributed boron nitride particles with a volume concentration as high as 60% and that these thermoplastic filaments can be used as feedstock for 3D-printing objects using a fused deposition system. Objects 3D-printed by fused deposition were subsequently sintered at high temperature to obtain dense ceramic products. In a parallel study the behavior of hexagonal boron nitride in aqueous solutions was investigated. It was shown that the addition of a cationic dispersant to an azeotrope enabled the formulation of slurries with a volume concentration of boron nitride as high as 33%. Although these slurries exhibited complex rheological behavior, the results from this study are encouraging and provide a pathway for manufacturing hexagonal boron nitride objects via robocasting.

Measurement of boron isotope ratios in groundwater studies

International Nuclear Information System (INIS)

Porteous, N.C.; Walsh, J.N.; Jarvis, K.E.

1995-01-01

Boron is present at low levels in groundwater and rainfall in the UK, ranging between 2 and 200 ng ml -1 . A sensitive technique has been developed using inductively coupled plasma mass spectrometry (ICP-MS) to measure boron isotope ratios at low concentrations with a precision (s r ) of between 0.1 and 0.2%. Samples were evaporated to increase elemental boron concentrations to 200 ng ml -1 and interfering matrix elements were removed by an adapted cation-exchange separation procedure. The validity of measuring boron isotopic ratios by ICP-MS at this concentration level is discussed in relation to the theoretical instrument precision attainable based on counting statistics. (author)

PENGARUH KARATERISTIK TUJUAN ANGGARAN DAN PENERAPAN SISTEM INFORMASI AKUNTANSI TERHADAP KINERJA APARAT PEMERINTAH DAERAH DENGAN TINGKAT DESENTRALISASI SEBAGAI PEMODERASI

Directory of Open Access Journals (Sweden)

Ingrid Panjaitan

2017-06-01

Full Text Available Penelitian ini bertujuan untuk mengetahui pengaruh karakteristik tujuan anggaran dan penerapan sistem informasi akuntansi terhadap kinerja aparat pemerintah daerah serta tingkat desentralisasi sebagai pemoderasi. Lokasi penelitian dilakukan di Kecamatan Kradenan dan Gabus, Kabupaten Grobogan. Penelitian ini merupakan penelitian kuantitatif dengan menggunakan Partial Least Square (PLS sebagai alat uji. Responden penelitian adalah aparat pemerintah di kecamatan dan kelurahan, dengan sampel sebanyak 60 responden. Hasil penelitian ini menunjukkan bahwa variabel karakteristik tujuan anggaran dan desentralisasi berpengaruh positif terhadap kinerja aparat pemda. Sedangkan variabel sistem informasi akuntansi tidak berpengaruh terhadap kinerja aparat pemda, dan desentralisasi tidak dapat memoderasi pengaruh karakteristik tujuan anggaran dan sistem informasi akuntansi terhadap kinerja aparat pemerintah daerah.

Developments in boron magnetic resonance imaging (MRI)

International Nuclear Information System (INIS)

Schweizer, M.

1995-01-01

This report summarizes progress during the past year on maturing Boron-11 magnetic resonance imaging (MRI) methodology for noninvasive determination of BNCT agents (BSH) spatially in time. Three major areas are excerpted: (1) Boron-11 MRI of BSH distributions in a canine intracranial tumor model and the first human glioblastoma patient, (2) whole body Boron-11 MRI of BSH pharmacokinetics in a rat flank tumor model, and (3) penetration of gadolinium salts through the BBB as a function of tumor growth in the canine brain

Optical properties of boron carbide near the boron K edge evaluated by soft-x-ray reflectometry from a Ru/B4C multilayer

Energy Technology Data Exchange (ETDEWEB)

Ksenzov, Dmitriy; Panzner, Tobias; Schlemper, Christoph; Morawe, Christian; Pietsch, Ullrich

2009-12-10

Soft-x-ray Bragg reflection from two Ru/B4C multilayers with 10 and 63 periods was used for independent determination of both real and imaginary parts of the refractive index n = 1 -{delta} + i{beta} close to the boron K edge ({approx}188 eV). Prior to soft x-ray measurements, the structural parameters of the multilayers were determined by x-ray reflectometry using hard x rays. For the 63-period sample, the optical properties based on the predictions made for elemental boron major deviations were found close to the K edge of boron for the 10-period sample explained by chemical bonding of boron to B4C and various boron oxides.

Fabrication of boron-phosphide neutron detectors

International Nuclear Information System (INIS)

Fitzsimmons, M.; Pynn, R.

1997-01-01

Boron phosphide is a potentially viable candidate for high neutron flux neutron detectors. The authors have explored chemical vapor deposition methods to produce such detectors and have not been able to produce good boron phosphide coatings on silicon carbide substrates. However, semi-conducting quality films have been produced. Further testing is required

PENGARUH MANAJEMEN LABA TERHADAP KINERJA PERUSAHAAN DENGAN KUALITAS AUDIT SEBAGAI VARIABEL PEMODERASI

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Dewi Fitriyani

2014-12-01

Full Text Available Penelitian ini bertujuan untuk menganalisis pengaruh manajemen laba baik manajemen laba akrual maupun manajemen laba riil terhadap kinerja perusahaan dengan kualitas audit sebagai variabel pemoderasi. Seluruh perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia menjadi populasi. Pengambilan sampel menggunakan purposive sampling. Hipotesis diuji menggunakan regresi linear berganda dan moderated regression analysis. Hasil uji regresi linear berganda menghasilkan bahwa manajemen laba akrual memiliki pengaruh terhadap kinerja perusahaan sedangkan manajemen laba riil tidak berpengaruh terhadap kinerja perusahaan. Hasil uji moderated regression analysis menunjukkan bahwa kualitas audit tidak dapat memoderasi pengaruh manajemen laba baik akrual maupun riil terhadap kinerja perusahaan. Dengan demikian disimpulkan manajemen laba melalui aktivitas akrual akan lebih berpengaruh terhadap kinerja perusahaan dibandingkan manajemen laba melalui aktivitas riil. Penelitian ini juga menyimpulkan perusahaan yang diaudit baik oleh KAP Big Four maupun selain KAP Big Four tidak dapat mempengaruhi perusahaan untuk melakukan aktivitas manajemen laba. The aim of this research is to analyse the influence of earnings management both accruals earnings management and real earnings management to companies performance with audit quality as moderating variable. High audit quality is showed by the size of audit firm. This research is used the population from manufacture companies listed for the period of 2004 to 2007 in Indonesian Stock Exchange with purposive sampling. The result from multiple linear regression test is accrual earnings management have influence to companies performance, but real earnings management have not influence. The moderated regression analysis find that audit quality can not moderate influence accruals and real earnings management to companies performance. This research is conclude that earnings management through accruals activity more

Friction anisotropy in boronated graphite

International Nuclear Information System (INIS)

Kumar, N.; Radhika, R.; Kozakov, A.T.; Pandian, R.; Chakravarty, S.; Ravindran, T.R.; Dash, S.; Tyagi, A.K.

2015-01-01

Graphical abstract: - Highlights: • Friction anisotropy in boronated graphite is observed in macroscopic sliding condition. • Low friction coefficient is observed in basal plane and becomes high in prismatic direction. • 3D phase of boronated graphite transformed into 2D structure after friction test. • Chemical activity is high in prismatic plane forming strong bonds between the sliding interfaces. - Abstract: Anisotropic friction behavior in macroscopic scale was observed in boronated graphite. Depending upon sliding speed and normal loads, this value was found to be in the range 0.1–0.35 in the direction of basal plane and becomes high 0.2–0.8 in prismatic face. Grazing-incidence X-ray diffraction analysis shows prominent reflection of (0 0 2) plane at basal and prismatic directions of boronated graphite. However, in both the wear tracks (1 1 0) plane become prominent and this transformation is induced by frictional energy. The structural transformation in wear tracks is supported by micro-Raman analysis which revealed that 3D phase of boronated graphite converted into a disordered 2D lattice structure. Thus, the structural aspect of disorder is similar in both the wear tracks and graphite transfer layers. Therefore, the crystallographic aspect is not adequate to explain anisotropic friction behavior. Results of X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy shows weak signature of oxygen complexes and functional groups in wear track of basal plane while these species dominate in prismatic direction. Abundance of these functional groups in prismatic plane indicates availability of chemically active sites tends to forming strong bonds between the sliding interfaces which eventually increases friction coefficient

Friction anisotropy in boronated graphite

Energy Technology Data Exchange (ETDEWEB)

Kumar, N., E-mail: niranjan@igcar.gov.in [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Radhika, R. [Crystal Growth Centre, Anna University, Chennai (India); Kozakov, A.T. [Research Institute of Physics, Southern Federal University, Rostov-on-Don (Russian Federation); Pandian, R. [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Chakravarty, S. [UGC-DAE CSR, Kalpakkam (India); Ravindran, T.R.; Dash, S.; Tyagi, A.K. [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India)

2015-01-01

Graphical abstract: - Highlights: • Friction anisotropy in boronated graphite is observed in macroscopic sliding condition. • Low friction coefficient is observed in basal plane and becomes high in prismatic direction. • 3D phase of boronated graphite transformed into 2D structure after friction test. • Chemical activity is high in prismatic plane forming strong bonds between the sliding interfaces. - Abstract: Anisotropic friction behavior in macroscopic scale was observed in boronated graphite. Depending upon sliding speed and normal loads, this value was found to be in the range 0.1–0.35 in the direction of basal plane and becomes high 0.2–0.8 in prismatic face. Grazing-incidence X-ray diffraction analysis shows prominent reflection of (0 0 2) plane at basal and prismatic directions of boronated graphite. However, in both the wear tracks (1 1 0) plane become prominent and this transformation is induced by frictional energy. The structural transformation in wear tracks is supported by micro-Raman analysis which revealed that 3D phase of boronated graphite converted into a disordered 2D lattice structure. Thus, the structural aspect of disorder is similar in both the wear tracks and graphite transfer layers. Therefore, the crystallographic aspect is not adequate to explain anisotropic friction behavior. Results of X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy shows weak signature of oxygen complexes and functional groups in wear track of basal plane while these species dominate in prismatic direction. Abundance of these functional groups in prismatic plane indicates availability of chemically active sites tends to forming strong bonds between the sliding interfaces which eventually increases friction coefficient.

Optimalisasi Pembelajaran IPS Pada Siswa Kelas VI Melalui Metode Contextual Teaching And Learning (CTL

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Mahfud Mahfud

2014-08-01

Full Text Available Peranan guru dalam pembelajaran IPS mempunyai hubungan erat dengan dengan cara mengaktifkan siswa dalam belajar, terutama dalam proses pengembangan kemampuan dan keterampilan.Untuk mengurangi sifat verbalisme siswa dan membantah pemahaman konsep yang terdapat dalam materi IPS yang terdapat di SD, guru diharapkan memiliki kemampuan untuk mengembangkan model interaktif dalam pembelajaran IPS serta mengidentifikasi sumber-sumber pelajaran. Salah satu model interaktif yang bisa diterapkan guru salah satunya adalah model pembelajaran kontekstual atau Contextual Teaching and Learning (CTL. Pembelajarn kontekstual merupakan suatu proses yang bertujuan untuk membantu siswa memahami materi pelajaran yang sedang mereka pelajari dengan menghubungkan pokok materi pelajaran dengan penerapannya dalam kehidupan sehari-hari.Dari hasil kegiatan penelitian tindakan kelas yang telah dilakukan dalam dua siklus terhadap siswa kelas VIA di SDN Pinggir Papas 1 Kecamatan Kalianget Kabupaten Sumenep, dan berdasarkan seluruh pembahasan dari hasil analisis yang telah dilakukan, dapat disimpulkan bahwaOptimalisasi Pembelajaran IPS pada Siswa Kelas VIAmelalui Metode Contextual Teaching And Learning(CTL dapat meningkatkan kemampuan siswa memahami materi pembelajaran IPS, sehingga berpengaruh terhadap peningkatan prestasi belajar siswa, serta siswa menjadi aktif dan tertarik mengikuti proses pembelajaranyang dilaksanakan oleh guru di kelas.

Boron autoradiography method applied to the study of steels

International Nuclear Information System (INIS)

Gugelmeier, R.; Barcelo, G.N.; Boado, J.H.; Fernandez, C.

1986-01-01

The boron state, contained in the steel microestructure, is determined. The autoradiography by neutrons is used, permiting to obtain boron distribution images by means of additional information which is difficult to acquire by other methods. The application of the method is described, based on the neutronic irradiation of a polished steel sample, over which a celulose nitrate sheet or other appropriate material is fixed to constitute the detector. The particles generated by the neutron-boron interaction affect the detector sheet, which is subsequently revealed with a chemical treatment and can be observed at the optical microscope. In the case of materials used for the construction of nuclear reactors, special attention must be given to the presence of boron, since owing to the exceptionaly high capacity of neutron absorption, lowest quantities of boron acquire importance. The adaption of the method to metallurgical problems allows the obtainment of a correlation between the boron distribution images and the material's microstructure. (M.E.L.) [es

Synthesis of Boron Nano wires, Nano tubes, and Nano sheets

International Nuclear Information System (INIS)

Patel, R.B.; Chou, T.; Iqbal, Z.

2014-01-01

The synthesis of boron nano wires, nano tubes, and nano sheets using a thermal vapor deposition process is reported. This work confirms previous research and provides a new method capable of synthesizing boron nano materials. The materials were made by using various combinations of MgB 2 , Mg(BH 4 ) 2 , MCM-41, NiB, and Fe wire. Unlike previously reported methods, a nanoparticle catalyst and a silicate substrate are not required for synthesis. Two types of boron nano wires, boron nano tubes, and boron nano sheets were made. Their morphology and chemical composition were determined through the use of scanning electron microscopy, transmission electron microscopy, and electron energy loss spectroscopy. These boron-based materials have potential for electronic and hydrogen storage applications.

Impurity and particle recycling reduction by boronization in JT-60U

International Nuclear Information System (INIS)

Higashijima, S.; Sugie, T.; Kubo, H.; Tsuji, S.; Shimada, M.; Asakura, N.; Hosogane, N.; Kawano, Y.; Nakamura, H.; Itami, K.; Sakasai, A.; Shimizu, K.; Ando, T.; Saidoh, M.

1995-01-01

In JT-60U boronization using decaborane was carried out. Boronization reduced the oxygen impurity in OH discharges and shortened the wall conditioning after the vacuum vessel vent and consequently enabled JT-60U to produce clean plasmas easily except for NB heated plasmas. After boronization, particle recycling was reduced drastically in OH and NB discharges. High confinement plasmas were obtained including high β p mode and H-mode discharges. In the latest boronization part of divertor plates were replaced with B 4 C coated tiles with a B 4 C thickness similar 300 μm. After introducing B 4 C divertor tiles, an explosive generation of boron particles from the tiles was observed. By the combined effects of boronization with decaborane and boron generation from B 4 C tiles, oxygen impurity was so low that oxygen line signals were reduced to noise levels after the latest boronization. On the other hand, boron burst from the B 4 C tiles restricted the operation of JT-60U. ((orig.))

Influence of boron reduction strategies on PWR accident management flexibility

International Nuclear Information System (INIS)

Papukchiev, Angel Aleksandrov; Liu, Yubo; Schaefer, Anselm

2007-01-01

In conventional pressurized water reactor (PWR) designs, soluble boron is used for reactivity control over core fuel cycle. Design changes to reduce boron concentration in the reactor coolant are of general interest regarding three aspects - improved reactivity feedback properties, lower impact of boron dilution scenarios on PWR safety and eventually more flexible accident management procedures. In order to assess the potential advantages through the introduction of boron reduction strategies in current PWRs, two low boron core configurations based on fuel with increased utilization of gadolinium and erbium burnable absorbers have been developed. The new PWR designs permit to reduce the natural boron concentration in reactor coolant at begin of cycle to 518 ppm and 805 ppm. For the assessment of the potential safety advantages of these cores a hypothetical beyond design basis accident has been simulated with the system code ATHLET. The analyses showed improved inherent safety and increased accident management flexibility of the low boron cores in comparison with the standard PWR. (author)

Bulk-boronized limiter operation in the Wendelstein 7-AS stellarator

Energy Technology Data Exchange (ETDEWEB)

Brakel, R; Burhenn, R; Behrisch, R; Grigull, P; Hacker, H; Hildebrandt, D; Hofmann, J V; Mahn, C; Roth, J; Schneider, U; Weller, A [Max-Planck-Inst. fuer Plasmaphysik, Garching (Germany); Hirooka, Y [Inst. of Plasma Physics and Fusion Research, Univ. California, Los Angeles, CA (United States); W7-AS Team; NI Group; ECRH Group

1992-12-01

Bulk-boronized graphite (20% boron) has been tested as a limiter material in the Wendelstein 7-AS stellarator. The recycling behaviour and the plasma impurities are compared for the new material and the formerly used TiC-coated graphite with stainless steel and boronized walls. After conditioning the recycling and the oxygen and carbon levels are comparable for both materials. No significant impact of sputter boronization from the limiters on the oxygen level was observed. A drastical reduction of oxygen by about a factor of 10 was obtained only after additional gas boronization. In this case Z[sub eff] is primarily determined by carbon and boron. For ECF standard discharges Z[sub eff][approx equal]2 with P[sub rad]=6% of the input power was found as compared to Z[sub eff]< or approx.3 and P[sub rad]=10% before boronization and Z[sub eff][approx equal]4, P[sub rad]=20% with TiC-limiters. (orig.).

Proceedings of workshop on 'boron chemistry and boron neutron capture therapy'

International Nuclear Information System (INIS)

Kitaoka, Yoshinori

1993-09-01

This volume contains the proceedings of the 5th Workshop on 'the Boron Chemistry and Boron Neutron Capture Therapy' held on February 22 in 1993. The solubility of the boron carrier play an important role in the BNCT. New water-soluble p-boronophenylalanine derivatives are synthesized and their biological activities are investigated (Chap. 2 and 3). Some chemical problems on the BNCT were discussed, and the complex formation reaction of hydroxylboryl compounds were studied by the paper electrophoresis (Chap. 4). The results of the medical investigation on the BNCT using BSH compounds are shown in Chap. 5. Syntheses of o- and m-boronophenylalanine were done and their optical resolution was tried (Chap. 6). The complex formation reaction of p-boronophenylalanine (BPA) with L-DOPA and the oxidation reaction of the analogs are found in Chap. 7. The pka of BPA were determined by the isotachophoresis (Chap. 8). The chemical nature of dihydroxyboryl compounds were investigated by an infrared spectroscopy and electrophoresis (Chap. 9). New synthetic methods of BPA and p-boronophenylserine using ester of isocyanoacetic acid are described in Chap. 10. The induction of chromosomal aberations by neutron capture reaction are discussed from a point of the biological view. The a of the presented papers are indexed individually. (J.P.N.)

PENGARUH INTERNAL LOCUS OF CONTROL DAN FASILITAS BELAJAR TERHADAP HASIL BELAJAR MELALUI DISIPLIN BELAJAR

Directory of Open Access Journals (Sweden)

Risnaeni

2016-06-01

Full Text Available Tujuan penelitian ini adalah untuk menganalisis pengaruh langsung dan tidak langsung internal locus of control dan fasilitas belajar terhadap hasil belajar melalui disiplin belajar. Populasi penelitian ini adalah seluruh siswa kelas XI SMA N 3 Pemalang tahun ajaran 2015/2016. Sampel yang diambil sebanyak 105 siswa. Metode pengumpulan data menggunakan dokumentasi dan angket. Metode analisis data yang digunakan adalah analisis deskriptif, analisis jalur dan sobel test. Hasil penelitian menunjukkan (1 Ada pengaruh internal locus of control terhadap hasil belajar ekonomi sebesar 6,4% (2 Ada pengaruh fasilitas belajar terhadap hasil belajar ekonomi sebesar 4,6% (3 Ada pengaruh disiplin belajar terhadap hasil belajar ekonomi sebesar 9,6% (4 Ada pengaruh internal locus of control terhadap disiplin belajar siswa sebesar 37,2% (5 Ada pengaruh fasilitas belajar terhadap disiplin belajar siswa sebesar 30,2% (6 Ada pengaruh internal locus of control melalui disiplin belajar sebagai variabel intervening terhadap hasil belajar ekonomi sebesar 18,5% (7 Ada pengaruh fasilitas belajar melalui disiplin belajar sebagai variabel intervening terhadap hasil belajar ekonomi sebesar 14%. Berdasarkan hasil penelitian diatas, dapat disimpulkan bahwa terdapat pengaruh internal locus of control dan fasilitas belajar terhadap hasil belajar ekonomi melalui disiplin belajar sebagai variabel intervening. Saran yang dapat diberikan adalah memperbaiki indikator-indikator yang masih rendah sehingga hasil belajar akan semakin baik. The purpose is this study is to analyze the direct and indirect effect of internal locus of control and learning facilities toward learning outcomes through learning self-discipline. The population of the research is all of the 11th social students class at SMA N 3 Pemalang academic year 2015/2016. The researcher took 105 students as the sample. The researcher collects the data by using documentation and questionnaire. The result of this research shown

Screening of Wheat Genotypes for Boron Efficiency in Bangladesh

Science.gov (United States)

A number of Bangladeshi wheat genotypes (varieties and advanced lines) have been tested for boron efficiency through sand culture experiments over two years (2007-08 & 2008-09) against two Thai check varieties ‘Fang 60’ (boron efficient) and ‘SW41’ (boron inefficient). Performances of the genotypes ...

The investigation of parameters affecting boron removal by electrocoagulation method

International Nuclear Information System (INIS)

Yilmaz, A. Erdem; Boncukcuoglu, Recep; Kocakerim, M. Muhtar; Keskinler, Buelent

2005-01-01

Boron removal from wastewaters by electrocoagulation using aluminum electrode material was investigated in this paper. Several working parameters, such as pH, current density, boron concentration and type and concentration of supporting electrolyte were studied in an attempt to achieve a higher removal capacity. The experiments were carried out by keeping the pH of solution constant and optimum pH of solution was determined 8.0 for the aluminum electrode. Although energy consumption increased with decreasing boron concentration, which conductivity of these solutions were low, boron removal efficiency was higher at 100 mg/L than that of 1000 mg/L. Current density was an important parameter affecting removal efficiency. Boron removal efficiency and energy consumption increased with increasing current density from 1.2 to 6.0 mA/cm 2 . The types of different supporting electrolyte were experimented in order to investigate to this parameter effect on boron removal. The highest boron removal efficiency, 97%, was found by CaCl 2 . Added CaCl 2 increased more the conductivity of solution according to other supporting electrolytes, but decreased energy consumption. The results showed to have a high effectiveness of the electrocoagulation method in removing boron from aqueous solutions

Effect of boron on growth criteria of some wheat cultivars

Directory of Open Access Journals (Sweden)

Ashraf Metwally

2012-01-01

Full Text Available Introduction: Toxic soil concentrations of the essential micronutrient boron (B represent major limitations to crop production worldwide. Plants have a range of defense systems that might be involved in their affinity to resist and tolerate nutrients stress.Materials and methods: The experiments were carried out to study the differential responses in five wheat cultivars to boron toxicity. Results: The fresh and dry matter yield of the test wheat cultivars showed marked decrease as the concentration of boron was increased. Elevated concentration of boron had a notable inhibitory effect on the biosynthesis of pigments fractions in the test wheat cultivars as severely as dry matter gain. The adverse concentration effects of boron on some metabolic responses were clearly displayed by shoot and root systems, exhibited in the elevated rates of proline, hydrogen peroxide and malondialdehyde formation. Potassium leakage was severely affected by boron-stress in some cultivars at all tested concentrations, while in some others a moderate damage was manifested only at the higher boron concentrations.Conclusions: Sakha 93 out of all the different cultivars investigated was found to display the lowest sensitivity to boron-stress, while Gemmeza 9 was the most sensitive one.

Dependence of boron cluster dissolution on the annealing ambient

International Nuclear Information System (INIS)

Radic, Ljubo; Lilak, Aaron D.; Law, Mark E.

2002-01-01

Boron is introduced into silicon via implantation to form p-type layers. This process creates damage in the crystal that upon annealing causes enhanced diffusion and clustering of the boron layer. Reactivation of the boron is not a well-understood process. In this letter we experimentally investigate the effect of the annealing ambient on boron reactivation kinetics. An oxidizing ambient which injects silicon interstitials is compared to an inert ambient. Contrary to published theory, an excess of interstitials does not accelerate the reactivation process

Metal interactions with boron clusters

International Nuclear Information System (INIS)

Grimes, R.N.

1982-01-01

This book presents information on the following topics: the structural and bonding features of metallaboranes and metallacarboranes; transition-metal derivatives of nido-boranes and some related species; interactions of metal groups with the octahydrotriborate (1-) anion, B 3 H 8 ; metallaboron cage compounds of the main group metals; closo-carborane-metal complexes containing metal-carbon and metal-boron omega-bonds; electrochemistry of metallaboron cage compounds; and boron clusters with transition metal-hydrogen bonds

Boron effect on stainless steel plasticity under hot deformation

International Nuclear Information System (INIS)

Bulat, S.I.; Kardonov, B.A.; Sorokina, N.A.

1978-01-01

The effect of boron on plasticity of stainless steels at temperatures of hot deformation has been studied at three levels of alloying, i.e. 0-0.01% (micro-alloying or modifying), 0.01-0.02% (low alloying) and 0.02-2.0% (high alloying). Introduction of 0.001-0.005% of boron increases hot plasticity of both low and high carbon stainless steels due to decrease in grain size and strengthening of grain boundaries. Microalloying by boron has a positive effect at temperatures below 1200-1220 deg C. At higher temperatures, particularly when its content exceeds 0.008%, boron deteriorates plasticity by increasing the size of grains and weakening their boundaries. 0.1-2% boron strengthen the stainless steel and dectease its plasticity

Pengaruh Kerapatan Vegetasi Penutup Lahan terhadap Karakteristik Resesi Hidrograf pada Beberapa Subdas di Propinsi Jawa Tengah Dan Propinsi DIY

Directory of Open Access Journals (Sweden)

Bokiraiya Latuamury

2016-10-01

Full Text Available ABSTRAK Penelitian ini dilakukan di Propinsi Jawa Tengah dan Propinsi DIY, dilatarbelakangi oleh penurunan daya dukung lingkungan seperti rusaknya kawasan hutan dan berkurangnya luas tutupan lahan hutan, yang dapat mempengaruhi perilaku aliran air. Dengan adanya perubahan tutupan lahan akan berdampak pada berubahnya sifat-sifat hidrologi seperti koefisien aliran, debit dan karakteristik hidrograf aliran. Indikator kerusakan hutan dapat dilihat dari karakteristik hidrograf. Evaluasi respon DAS berupa hidrograf aliran akibat adanya perubahan penutup lahan menjadi sangat penting untuk dianalisis karena merupakan tolok ukur dalam setiap penentuan kebijakan terkait dengan penanganan banjir dan tanah longsor. Oleh karena itu, penelitian ini bertujuan untuk (1. mengkaji karakteristik kerapatan vegetasi penutup lahan dan keterkaitannya dalam ekosistem DAS, (2. mengkaji karakteristik aliran dasar (koefisien resesi  pada beberapa sub-DAS tersebut, dan (3. menganalisis pengaruh kerapatan vegetasi penutup lahan terhadap karakteristik hidrograf aliran khususnya aliran dasar pada sub DAS yang diteliti. Metode penelitian yang digunakan adalah metode survei data sekunder pada rekaman data AWLR/SPAS untuk analisis resesi hidrograf dan koefisien resesi (Krb, dan interpretasi citra Landsat ETM+ untuk transformasi indeks vegetasi NDVI dikorelasikasi dengan data kerapatan vegetasi untuk mempresentasikan karakteristik kerapatan vegetasi. Selanjutnya hasil transformasi indeks vegetasi NDVI kemudian diujikorelasikan dengan karakteristik resesi (koefisien resesi untuk menganalisis pengaruh kerapatan vegetasi penutup lahan terhadap karakteristik resesi hidrograf. Hasil uji statistik NDVI dengan koefisien resesi menunjukkan terdapatnya korelasi antara nilai NDVI dan koefisien resesi pada R2 = 0,1427, F = 2.17 tidak berpengaruh nyata pada taraf signifikan 1% sebesar 0.1646 (lampiran 1.2b. Analisis korelasi antara variabel independen (NDVI penutup lahan dengan variabel

Pengaruh Word Of Mouth terhadap Keputusan Pembelian dan Kepuasan Konsumen (Studi pada Konsumen Kober Mie Setan Jalan Simpang Soekarno-hatta Nomor 1-2 Malang)

OpenAIRE

Ajie Nugraha, Finnan Aditya

2015-01-01

Penelitian ini bertujuan untuk menjelaskan tentang: pengaruh word of mouth terhadap keputusan pembelian, pengaruh keputusan pembelian terhadap kepuasan konsumen, pengaruh word of mouth terhadap kepuasan konsumen, dan pengaruh word of mouth terhadap kepuasan konsumen melalui keputusan pembelian. Jenis penelitian yang digunakan adalah penelitian penjelasan atau explanatory research dengan pendekatan kuantitatif. Populasi dari penelitian ini adalah konsumen kober mie setan yang membeli berdasark...

Boron solubility in Fe-Cr-B cast irons

International Nuclear Information System (INIS)

Guo Changqing; Kelly, P.M.

2003-01-01

Boron solubility in the as-cast and solution treated martensite of Fe-Cr-B cast irons, containing approximately 1.35 wt.% of boron, 12 wt.% of chromium, as well as other alloying elements, has been investigated using conventional microanalysis. The significant microstructural variations after tempering at 750 deg. C for 0.5-4 h, compared with the original as-cast and solution treated microstructures, indicated that the matrix consisted of boron and carbon supersaturated solid solutions. The boron solubility detected by electron microprobe was between 0.185-0.515 wt.% for the as-cast martensite and 0.015-0.0589 wt.% for the solution treated martensite, much higher than the accepted value of 0.005 wt.% in pure iron. These remarkable increases are thought to be associated with some metallic alloying element addition, such as chromium, vanadium and molybdenum, which have atomic diameters larger than iron, and expand the iron lattice to sufficiently allow boron atoms to occupy the interstitial sites in iron lattice

Boron determination in tourmaline by neutron induced radiography

Energy Technology Data Exchange (ETDEWEB)

Qureshi, A.A. E-mail: aaqureshi@pinstech.org.pk; Akram, M.; Ayub Khan, M.; Khattak, N.U.; Qureshi, I.E.; Khan, H.A

2001-06-01

The technique of neutron induced radiography has been applied to determine the boron concentration and its spatial distribution in mineral tourmaline collected from Swat Tourmaline Granite, Northern Pakistan. The technique involves the simultaneous irradiation of sample and a standard fixed on a track detector with thermal neutrons and the counting of alpha and {sup 7}Li tracks produced in the detector from the nuclear reaction {sup 10}B(n,{alpha}){sup 7}Li. Boron concentration is determined by comparing the {sup 7}Li and alpha particle tracks density with that of a standard of known boron concentration. Boron concentration in tourmaline has been found to be (3.40{+-}0.01)% in this study which is on the upper side within the normal range (2.5-3.8)% reported in the world. The presence of somewhat higher concentration of boron in tourmaline indicates that the Swat Tourmaline Granite was generated as a late stage hydrothermal activity during the Himalayan Orogeny.

PENGARUH KOMUNIKASI PEMASARAN TERPADU TERHADAP CITRA MEREK PRODUK KARTU SIMPATI PADA PT. TELKOMSEL MAKASSAR

OpenAIRE

-, HAJI AZWAR

2015-01-01

2015 PENGARUH KOMUNIKASI PEMASARAN TERPADU TERHADAP CITRA MEREK PRODUK KARTU SIMPATI PADA PT.TELKOMSEL MAKASSAR Haji Azwar Nurdjanah Hamid Musran Munizu Tujuan dari penelitian ini adalah untuk melihat sejauh mana pengaruh program komunikasi pemasaran terpadu terhadap citra merek produk Simpati pada PT. Telkomsel Makassar. Sedangkan metode analisis yang digunakan dalam penelitian ini adalah analisis descriptif, analisis regresi linear berganda, uji validitas dan...

Analisis Perbandingan Sikap Konsumen terhadap Penggunaan Produk Shampoo Clear dan Shampoo Pantene di Winangun

OpenAIRE

Soegoto, Agus Supandi; Mananeke, Lisbeth; Manossoh, Angelina

2015-01-01

Sikap seseorang merupakan konsep penting dalam mempelajari perilaku konsumen. Dengan mempengaruhi perilaku konsumen, maka para pemasar dapat mempengaruhi perilaku pembelian konsumen. Sikap yang merupakan ekspresi perasaan menyatakan rasa suka atau tidak suka, senang atau tidak senang terhadap suatu produk, dimana produk tersebut dapat berupa barang atau jasa. Sikap konsumen akan mempengaruhi pilihannya dalam membeli, dimana seseorang mempunyai sikap terhadap segala sesuatu, misalnya: pekerjaa...

Analisa Pengaruh Customer Value Terhadap Purchase Intention Melalui Online Promotion Di Starbucks Coffee Surabaya

OpenAIRE

Wiranegara, Charles Oktavia

2015-01-01

Purpose: Penelitian ini bertujuan untuk mengetahui pengaruh customer value terhadap online promotion dan pengaruh online promotion terhadap purchase intention di Starbucks Coffee.Design/methodologi approach: Desain penelitian menggunakan pdendekatan kausal karena menjual hubungan sebab akibat. Variabel penelitian meliputi: satu variabel independen yaitu customer value (X) dan dua variabel terikat yaitu: online promotion (Y1) dan purchase intention (Y2). Customer value dijual d...

Resistensi dan Sensitivitas Bakteri terhadap Antibiotik di RSU dr. Soedarso Pontianak Tahun 2011-2013

OpenAIRE

Nurmala Nurmala; IGN Virgiandhy; Andriani Andriani; Delima F. Liana

2015-01-01

Salah satu upaya untuk mengurangi resistensi, pemberian antibiotik harus berdasarkan pola bakteri penyebab infeksi dan kepekaan bakteri terhadap antibiotik. Tujuan penelitian ini untukmengetahui pola bakteri, resistensi dan sensitivitasnya terhadap antibiotik di RSU dr. SoedarsoPontianak tahun 2011-2013. Penelitian deskriptif dengan pendekatan retrospektif dilakukan RSU dr. Soedarso, Pontianak. Sampel penelitian adalah hasil pemeriksaan kultur dan uji kepekaan spesimen pus pasien yang diperi...

Boron- and salt-tolerant trees and shrubs for northern Nevada

Science.gov (United States)

Heidi Kratsch

2012-01-01

Boron is a mineral that, in small quantities, is essential for plant growth and development , but becomes toxic at levels above 0.5 to 1 part per million (ppm) in the soil. Excess boron may be naturally present in the soil, and it can accumulate by irrigating with water high in boron. Boron occurs naturally in arid soils originating from geologically young deposits. It...

Boron Removal in Radioactive Liquid Waste by Forward Osmosis Membrane

Energy Technology Data Exchange (ETDEWEB)

Hwang, Dooseong; Choi, Hei Min; Lee, Kune Woo; Moon Jeikwon [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

2014-05-15

These wastes contain about 0.3-0.8 wt% boric acid and have been concentrated through an evaporation treatment. Boric acid tends to crystallize owing to its solubility, and to plug the evaporator. The volume reduction obtained through evaporation is limited by the amount of boric acid in the waste. As an emerging technology, forward osmosis (FO) has attracted growing interest in wastewater treatment and desalination. FO is a membrane process in which water flows across a semi-permeable membrane from a feed solution of lower osmotic pressure to a draw solution of higher osmotic pressure. However, very few studies on the removal of boron by FO have been performed. The objective of this study is to evaluate the possibility of boron separation in radioactive liquid waste by FO. In this study, the performance of FO was investigated to separate boron in the simulated liquid waste under the factors such as pH, osmotic pressure, ionic strength of the solution, and membrane characteristic. The boron separation in radioactive borate liquid waste was investigated with an FO membrane. When the feed solution containing boron is treated by the FO membrane, the boron permeation depends on the type of membrane, membrane orientation, pH of the feed solution, salt and boron concentration in the feed solution, and osmotic pressure of the draw solution. The boron flux begins to decline from pH 7, and increases with an increase in the osmotic driving force. The boron flux of the CTA-ES and ALFD membrane orientation is higher than those of the CTA-NW and ALFF orientation, respectively. The boron permeation rate is constant regardless of the osmotic pressure and membrane orientation. The boron flux decreases slightly with the salt concentration, but it is not heavily influenced at a low salt concentration.

Boron Removal in Radioactive Liquid Waste by Forward Osmosis Membrane

International Nuclear Information System (INIS)

Hwang, Dooseong; Choi, Hei Min; Lee, Kune Woo; Moon Jeikwon

2014-01-01

These wastes contain about 0.3-0.8 wt% boric acid and have been concentrated through an evaporation treatment. Boric acid tends to crystallize owing to its solubility, and to plug the evaporator. The volume reduction obtained through evaporation is limited by the amount of boric acid in the waste. As an emerging technology, forward osmosis (FO) has attracted growing interest in wastewater treatment and desalination. FO is a membrane process in which water flows across a semi-permeable membrane from a feed solution of lower osmotic pressure to a draw solution of higher osmotic pressure. However, very few studies on the removal of boron by FO have been performed. The objective of this study is to evaluate the possibility of boron separation in radioactive liquid waste by FO. In this study, the performance of FO was investigated to separate boron in the simulated liquid waste under the factors such as pH, osmotic pressure, ionic strength of the solution, and membrane characteristic. The boron separation in radioactive borate liquid waste was investigated with an FO membrane. When the feed solution containing boron is treated by the FO membrane, the boron permeation depends on the type of membrane, membrane orientation, pH of the feed solution, salt and boron concentration in the feed solution, and osmotic pressure of the draw solution. The boron flux begins to decline from pH 7, and increases with an increase in the osmotic driving force. The boron flux of the CTA-ES and ALFD membrane orientation is higher than those of the CTA-NW and ALFF orientation, respectively. The boron permeation rate is constant regardless of the osmotic pressure and membrane orientation. The boron flux decreases slightly with the salt concentration, but it is not heavily influenced at a low salt concentration

Contamination of urban garden soils with copper and boron

Energy Technology Data Exchange (ETDEWEB)

Purves, D

1966-06-04

Spectrochemical analyses of garden soils sampled in the Edinburgh and Dundee areas indicate that there is substantial contamination of urban soils with copper and boron. These soils were analyzed spectrochemically with respect to total copper and water-extractable boron content with the view of comparing the levels obtained in urban areas with levels in arable soils in rural areas. The results indicate that urban garden soils contain about four times as much copper and two to three times as much water-soluble boron as rural arable soils. The existence of such a marked disparity between the levels of two potentially toxic elements in urban and rural areas is evidence of slow poisoning of the soil environment in built-up areas and is cause for concern. While the major source of contamination of soils with copper and boron is still a matter for speculation, it is probable that the addition of soot to garden soils and the fall-out of sooty material in built-up areas where atmospheric pollution is a problem make a substantial contribution to the water-extractable boron content of urban soils. Three samples of soot from domestic chimneys, obtained from independent sources, were found on analysis to contain 640, 650 and 555 p.p.m. water-extractable boron, and it is evident that the addition to soil of even small amounts of soot with a boron content of this order would have a marked effect on its water-extractable boron content.

Model for calculating the boron concentration in PWR type reactors

International Nuclear Information System (INIS)

Reis Martins Junior, L.L. dos; Vanni, E.A.

1986-01-01

A PWR boron concentration model has been developed for use with RETRAN code. The concentration model calculates the boron mass balance in the primary circuit as the injected boron mixes and is transported through the same circuit. RETRAN control blocks are used to calculate the boron concentration in fluid volumes during steady-state and transient conditions. The boron reactivity worth is obtained from the core concentration and used in RETRAN point kinetics model. A FSAR type analysis of a Steam Line Break Accident in Angra I plant was selected to test the model and the results obtained indicate a sucessfull performance. (Author) [pt

Pengaruh Perubahan Saat Penyalaan (Ignition Timing) Terhadap Prestasi Mesin Pada Sepeda Motor 4 Langkah Dengan Bahan Bakar Lpg

OpenAIRE

Yunianto, Bambang

2010-01-01

Bahan bakar LPG merupakan bahan bakar gas yang ramah lingkungan, sehingga dapat dijadikan bahan bakar alternatif selain bahan bakar bensin Performa Mesin bensin yang dioperasikan dengan menggunakan bahan bakar gas LPG mengalami penurunan. Penurunan ini terjadi dikarenakan karakteristik sifat bahan bakar bensin berbeda dengan LPG. Hal ini dapat diatasi dengan mengatur saat penyalaan sehingga lebih sesuai dengan karakteristik gas LPG. Dari hasil pengujian diperoleh bahwa dengan pengaturan saat ...

Effect of Boronization on Ohmic Plasmas in NSTX

International Nuclear Information System (INIS)

Skinner, C.H.; Kugel, H.; Maingi, R.; Wampler, W.R.; Blanchard, W.; Bell, M.; Bell, R.; LeBlanc, B.; Gates, D.; Kaye, S.; LaMarche, P.; Menard, J.; Mueller, D.; Na, H.K.; Nishino, N.; Paul, S.; Sabbagh, S.; Soukhanovskii, V.

2001-01-01

Boronization of the National Spherical Torus Experiment (NSTX) has enabled access to higher density, higher confinement plasmas. A glow discharge with 4 mTorr helium and 10% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B+C areal density of 10 to the 18 (B+C) cm to the -2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by x15, carbon emission reduced by two and copper reduced to undetectable levels. After boronization, the plasma current flattop time increased by 70% enabling access to higher density, higher confinement plasmas

Spectrographic determination of traces of boron in steels

International Nuclear Information System (INIS)

Alduan, F.A.; Roca, M.

1976-01-01

A spectrographic method has been developed to determine quantitatively boron in steels in the 0.5 to 250 ppm concentration range. The samples are dissolved in acids and transformed into oxides, avoiding boron losses by the addition of mannitol. For the fluoride evolution of boron in the dc arc the following compounds have been considered: CuF 2 , LiF, NaF, and SrF 2 . CuF 2 , at a concentration of 10%, provides the highest line-to-background intensity ratio. An arc current of 5 amperes eliminates the interference from iron spectrum on the most sensitive boron line - B 2497.7 A. Variations in chromium and nickel contents have no effect on the analytical results. (author)

Density functional theory investigation of oxygen interaction with boron-doped graphite

Energy Technology Data Exchange (ETDEWEB)

Liu, Juan; Wang, Chen [State Key Lab of New Ceramic and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Liang, Tongxiang, E-mail: txliang@tsinghua.edu.cn [State Key Lab of New Ceramic and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Lai, Wensheng [Advanced Material Laboratory, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084 (China)

2016-12-30

Highlights: • Density-functional approach is applied to study the interaction of oxygen with boron-doped graphite. • Adsorption and diffusion of oxygen atoms on boron doped graphite surfaces are studied. • Recombination of oxygen is investigated by ER and LH mechanisms. • Low boron concentration facilitates O{sub 2} formation while high boron loading inhibits the recombination. • The presence of B−B bonds due to boron accumulation makes it impossible for oxygen recombination. - Abstract: Boron inserted as impurity by substitution of carbon atoms in graphite is known to change (improve or deteriorate) oxidation resistance of nuclear graphite, but the reason for both catalytic and inhibiting oxidation is still uncertain. As a first step, this work is more specially devoted to the adsorption and diffusion of oxygen atoms on the surface and related to the problem of oxygen retention on the pure and boron-containing graphite surfaces. Adsorption energies and energy barriers associated to the diffusion for molecular oxygen recombination are calculated in the density functional theory framework. The existence of boron modifies the electronic structure of the surface, which results in an increase of the adsorption energy for O. However, low boron loading makes it easier for the recombination into molecular oxygen. For high boron concentration, it induces a better O retention capability in graphite because the presence of B-B bonds decreases recombination of the adsorbed oxygen atoms. A possible explanation for both catalytic and inhibiting effects of boron in graphite is proposed.

Anode performance of boron-doped graphites prepared from shot and sponge cokes

Science.gov (United States)

Liu, Tao; Luo, Ruiying; Yoon, Seong-Ho; Mochida, Isao

The structures and anode performances of graphitized pristine and boron-doped shot and sponge cokes have been comparatively studied by means of scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and galvanostatic measurement. The results show that high degree of graphitization can be obtained by the substituted boron atom in the carbon lattice, and boron in the resultant boron-doped graphites mainly exist in the form of boron carbide and boron substituted in the carbon lattice. Both of boron-doped graphites from shot and sponge cokes obtain discharge capacity of 350 mAh g -1 and coulombic efficiency above 90%. Apart from commonly observed discharge plateau for graphite, boron-doped samples in this study also show a small plateau at ca. 0.06 V. This phenomenon can be explained that Li ion stores in the site to be void-like spaces that are produced by "molecular bridging" between the edge sites of graphene layer stack with a release of boron atoms substituted at the edge of graphene layer. The effect of the amount of boron dopant and graphitization temperature on the anode performance of boron-doped graphite are also investigated in this paper.

Boron analysis for neutron capture therapy using particle-induced gamma-ray emission

International Nuclear Information System (INIS)

Nakai, Kei; Yamamoto, Yohei; Okamoto, Emiko; Yamamoto, Tetsuya; Yoshida, Fumiyo; Matsumura, Akira; Yamada, Naoto; Kitamura, Akane; Koka, Masashi; Satoh, Takahiro

2015-01-01

The neutron source of BNCT is currently changing from reactor to accelerator, but peripheral facilities such as a dose-planning system and blood boron analysis have still not been established. To evaluate the potential application of particle-induced gamma-ray emission (PIGE) for boron measurement in clinical boron neutron capture therapy, boronophenylalanine dissolved within a cell culture medium was measured using PIGE. PIGE detected 18 μgB/mL f-BPA in the culture medium, and all measurements of any given sample were taken within 20 min. Two hours of f-BPA exposure was required to create a boron distribution image. However, even though boron remained in the cells, the boron on the cell membrane could not be distinguished from the boron in the cytoplasm. - Highlights: • PIGE was evaluated for measuring blood boron concentration during clinical BNCT. • PIGE detected 18 μgB/mL f-BPA in culture medium. • All measurements of any given sample were taken within 20 min. • Two hours of f-BPA exposure is required to create boron distribution image by PIGE. • Boron on the cell membrane could not be distinguished from boron in the cytoplasm.

Study of the boron levels in serum after implantation of different ratios nano-hexagonal boron nitride–hydroxy apatite in rat femurs

Energy Technology Data Exchange (ETDEWEB)

Atila, Alptug, E-mail: alptugatila@yahoo.com [Department of Analytical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum 25240 (Turkey); Halici, Zekai; Cadirci, Elif [Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum 25240 (Turkey); Karakus, Emre [Department of Pharmacology and Toxicology, School of Veterinary Medicine, Ataturk University, Erzurum 25240 (Turkey); Palabiyik, Saziye Sezin [Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Ataturk University, Erzurum 25240 (Turkey); Ay, Nuran [Department of Material Science and Engineering, Faculty of Engineering, Anadolu University, Eskisehir 26555 (Turkey); Bakan, Feray [Sabancı University Nanotechnology Research and Application Center (SUNUM), Istanbul 34956 (Turkey); Yilmaz, Sahin [Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, Istanbul 34755 (Turkey)

2016-01-01

ABSTRACT: Boron and its derivatives are effective in bone recovery and osteointegration. However, increasing the boron levels in body liquids may cause toxicity. The aim of our study is to investigate serum boron levels using ICP-MS after implantation of different ratios of nano-hBN–HA composites in rat femurs. All rats were (n = 126) divided into five experimental groups (n = 24) and one healthy group (6 rats); healthy (Group1), femoral defect + %100HA (Group2), femoral defect + %2.5hBN + %97.5HA (Group3), femoral defect + %5hBN + %95HA (Group4), femoral defect + %10hBN + %90 HA (Group5), femoral defect + %100hBN (Group6). The femoral defect was created in the distal femur (3 mm drill-bit). Each implant group was divided into four different groups (n = 24) also 6 rats sacrificed for each groups in one week intervals during four weeks. In our results; at 1, 2, 3, and 4 weeks after implantation near bone tissue, serum levels of boron were evaluated using ICP-MS. We demonstrated that neither short-term nor long-term implantation of hBN–HA composite resulted in statistically increased serum boron levels in experimental groups compared to healthy group. In conclusion, this study investigated the implant material produced form hBN–HA for the first time. Our data suggest that hBN is a new promising target for biomaterial and implant bioengineers. - Highlights: • Nano-hBN–HA composites are new targets for biomaterial and implant bioengineers. • Serum boron levels were researched after implantation of nano-hBN–HA composites. • Implantation of hBN–HA composite did not result in increased serum boron levels. • The use of boron in composite form with HA did not change the stability of the implant.

Penerapan Pasal 1320 KUH Perdata terhadap Jual Beli secara Online (E-Commerce

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Herniwati ,

2015-07-01

Full Text Available Pasal 1320 KUHPerdata mengatur tentang syarat-syarat sah perjanjian. Ketentuan Pasal 1320 ini berlaku terhadap perjanjian jual beli secara konvensional dan perjanjian jual beli melalui online (internet Dewasa ini Perjanjian jual beli melalui online sangat diminati oleh kaum muda dan kaum ibu rumah tangga.Transaksi jual beli secara online atau disebut dengan e-commerce yang dilakukan melalui  media elektronik sudah sangat populer. Para pembeli yang akan membeli barang-barang atau jasa yang ditawarkan oleh penjual (pedagang. Dengan perkembangan teknologi informasi ini akan berdampak terhadap perkembangan aturan-aturan hukum yang ada. Atauran hukum yang diatur dalam KUHPerdata mengatur tentang  syarat-syarat perjanjian. Pasal 1320 KUHPerdata mengatur tentang syarat-syarat sah perjanjian. Ketentuan ini juga berlaku terhadap transaksi jual beli secara online. Ketentuan dalam KUHPerdata ini diperkuat  dengan adanya  Undang-Undang Nomor  11 Tahun 2008 Tentang Informasi dan Transaksi  Elektronik yang mengatur tentang transaksi elektronik.Kata Kunci:  Jual Beli, e-commerce

Analisis Pengaruh System Quality, Information Quality, Service Quality Terhadap Net Benefit Pada Sistem KRS-Online UMM

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Muhammad Asrar Fathoni

2017-07-01

Full Text Available Implementasi sitem informasi KRS-Online dalam perkuliahan digunakan untuk membantu proses penyusunan KRS oleh setiap mahasiswa Universitas Muhammadiyah Malang. Penelitian ini bertujuan untuk mengukur dan menguji variabel-variabel serta indikator yang memperngaruhi kesuksesan sistem informasi KRS-Online UMM. Model penelitian ini mengadopsi model penelitian Delone and Mclean IS Success. Satu set kuisoner yang disusun dalam penelitian ini disebarkan kepada 100 responden yang memiliki kualifikasi sebagai mahasiswa pengguna sistem KRS-Online.Uji validitas dan uji reliabilitas dilakukan untuk memperoleh data yang valid dan reliabel. Hasil penelitian menunjukkan bahwa kualitas sistem memiliki pengaruh yang signifikan antara terhadap kepuasan pengguna, kualitas informasi memiliki pengaruh yang signifikan terhadap kepuasan pengguna, kualitas layanan memiliki pengaruh yang signifikan terhadap kepuasan pengguna dan kepuasan pengguna memiliki pengaruh yang signifikan terhadap net benefit. Berdasarkan hasil analisa, kesuksesan sistem informasi KRS-Online UMM memiliki presentase sebesar 70,5% yang artinya kesuksesan sistem informasi KRS-Online UMM berada pada tingkatan “sukses”.

Boron-rich oligomers for BNCT

International Nuclear Information System (INIS)

Gula, M.; Perleberg, O.; Gabel, D.

2000-01-01

The synthesis of two BSH derivatives is described, which can be used for oligomerization in DNA-synthesizers. Synthesis pathways lead to final products in five and six steps, respectively. Because of chirality interesting results were expected. NMR-measurements confirm this expectation. Possible oligomers with high concentrations of boron can be attached to biomolecules. These oligomers can be explored with several imaging methods (EELS, PEM) to determine the lower detection limit of boron with these methods. (author)

A REVIEW OF THE MALARIA SITUATION IN IRIAN JAYA

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Suriadi Gunawan

2012-09-01

Full Text Available Karangan ini merupakan tinjauan mengenai situasi malaria di Irian Jaya hingga tahun 1980. Malaria merupakan masalah kesehatan masyarakat yang penting karena menyebabkan 14% dari kematian di rumah sakit dan 20% dari kunjungan ke fasilitas kesehatan. Malaria adalah hiper sampai mesoendemik di daerah pantai dan dataran rendah, sedangkan di dae­rah pegunungan sampai ketinggian 1700 m malaria tidak stabil dan potensial epidemik. Yang menjadi vektor ialah kelompok Anopheles punctulatus yang exo atau endophagik secara fakultatif serta bersifat exofilik. Program pemberantasan malaria yang didasarkan pada penyemprotan rumah dengan DDT melin­dungi sekitar 300.000 penduduk di 15 lokasi. Di semua lokasi penyemprotan angka parasit memang turun, kecuali di daerah Genyem (Nimboran di mana dicurigai adanya resistensi nyamuk terhadap DDT, tetapi transmisi malaria masih berjalan terus. Pembagian obat secara massal (chloroquin dan pyrimethamin juga tidak menghasilkan penurunan penu­laran yang diharapkan. Pemberantasan malaria di Irian Jaya menghadapi berbagai hambatan yang sangat besar. Selain ma­salah operasional, keuangan dan perilaku manusia, terdapat pula masalah teknis seperti berkembangnya resistensi P. falciparum terhadap pyrimethamin dan proguanil (1959, chloroquin (1973 dan sulfadoxin/ fansidar (1979 serta kemungkinan berkembangnya resistensi vektor terhadap DDT. Pemberantasan malaria di Irian Jaya perlu dievaluasi secara menyeluruh dan penelitian yang ber­sifat operasional perlu dilaksanakan untuk menyusun suatu program yang lebih rasional dan sesuai de­ngan kondisi setempat. Meningkatnya malaria akan menghambat pembangunan, maka penanggulangannya mutlak dilak­sanakan untuk menjamin berhasilnya proyek-proyek pembangunan sosial-ekonomi di propinsi tersebut.

Preparation of in-house graphite reference material for boron

International Nuclear Information System (INIS)

Kumar, Sanjukta A.; Venkatesh, K.; Swain, Kallola K.; Manisha, V.; Kamble, Granthali S.; Pandey, Shailaja P.; Remya Devi, P.S.; Ghosh, M.; Verma, R.

2016-05-01

Graphite is extensively used in nuclear technology. Boron concentration in graphite is one of the important parameters that decide its acceptability for nuclear applications. Reliable analytical methods are essential for the determination of boron in graphite at concentration about 5 mg kg -1 . Reference materials are used for validation of existing analytical methods and developing new methodologies. In view of the importance of determination of boron in graphite and unavailability of graphite reference material, an In-house graphite reference material was prepared in Analytical Chemistry Division. Graphite source material was procured, processed to obtain powder of ≤ 75 μm (200 mesh) and bottled. Procedures were developed for the determination of boron in graphite using inductively coupled plasma optical emission spectrometry (ICPOES) and inductively coupled plasma mass spectrometry (ICPMS) techniques. Homogeneity testing was carried out on the bottled units and boron content along with the combined and expanded uncertainties were established. The assigned boron concentration in the In-house graphite reference material is (7.3±0.46) mg kg -1 . (author)

The investigation of parameters affecting boron removal by electrocoagulation method

Energy Technology Data Exchange (ETDEWEB)

Yilmaz, A. Erdem [Department of Environmental Engineering, Atatuerk University, Faculty of Engineering, Erzurum (Turkey)]. E-mail: aerdemy@atauni.edu.tr; Boncukcuoglu, Recep [Department of Environmental Engineering, Atatuerk University, Faculty of Engineering, Erzurum (Turkey); Kocakerim, M. Muhtar [Department of Chemical Engineering, 25240, Atatuerk University, Faculty of Engineering Erzurum (Turkey); Keskinler, Buelent [Department of Environmental Engineering, Gebze Institute of Technology, Gebze/Kocaeli 41400 (Turkey)

2005-10-17

Boron removal from wastewaters by electrocoagulation using aluminum electrode material was investigated in this paper. Several working parameters, such as pH, current density, boron concentration and type and concentration of supporting electrolyte were studied in an attempt to achieve a higher removal capacity. The experiments were carried out by keeping the pH of solution constant and optimum pH of solution was determined 8.0 for the aluminum electrode. Although energy consumption increased with decreasing boron concentration, which conductivity of these solutions were low, boron removal efficiency was higher at 100 mg/L than that of 1000 mg/L. Current density was an important parameter affecting removal efficiency. Boron removal efficiency and energy consumption increased with increasing current density from 1.2 to 6.0 mA/cm{sup 2}. The types of different supporting electrolyte were experimented in order to investigate to this parameter effect on boron removal. The highest boron removal efficiency, 97%, was found by CaCl{sub 2}. Added CaCl{sub 2} increased more the conductivity of solution according to other supporting electrolytes, but decreased energy consumption. The results showed to have a high effectiveness of the electrocoagulation method in removing boron from aqueous solutions.

Boron stress response and accumulation potential of the extremely tolerant species Puccinellia frigida

International Nuclear Information System (INIS)

Rámila, Consuelo d.P.; Contreras, Samuel A.; Di Domenico, Camila; Molina-Montenegro, Marco A.; Vega, Andrea; Handford, Michael; Bonilla, Carlos A.

2016-01-01

Highlights: • P. frigida presents an extremely high boron toxicity threshold. • Restricting uptake and internal tolerance mechanisms could confer boron tolerance. • P. frigida is a boron hyperaccumulator over a wide range of concentrations. • The species has potential for phytoremediation purposes. - Abstract: Phytoremediation is a promising technology to tackle boron toxicity, which restricts agricultural activities in many arid and semi-arid areas. Puccinellia frigida is a perennial grass that was reported to hyperaccumulate boron in extremely boron-contaminated sites. To further investigate its potential for phytoremediation, we determined its response to boron stress under controlled conditions (hydroponic culture). Also, as a first step towards understanding the mechanisms underlying its extreme tolerance, we evaluated the presence and expression of genes related with boron tolerance. We found that P. frigida grew normally even at highly toxic boron concentrations in the medium (500 mg/L), and within its tissues (>5000 mg/kg DW). We postulate that the strategies conferring this extreme tolerance involve both restricting boron accumulation and an internal tolerance mechanism; this is consistent with the identification of putative genes involved in both mechanisms, including the expression of a possible boron efflux transporter. We also found that P. frigida hyperaccumulated boron over a wide range of boron concentrations. We propose that P. frigida could be used for boron phytoremediation strategies in places with different soil characteristics and boron concentrations. Further studies should pave the way for the development of clean and low-cost solutions to boron toxicity problems.

Boron stress response and accumulation potential of the extremely tolerant species Puccinellia frigida

Energy Technology Data Exchange (ETDEWEB)

Rámila, Consuelo d.P. [Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Santiago (Chile); Contreras, Samuel A.; Di Domenico, Camila [Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Santiago (Chile); Molina-Montenegro, Marco A. [Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo (Chile); Instituto de Ciencias Biológicas, Universidad de Talca, Avda. Lircay s/n, Talca (Chile); Vega, Andrea [Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Santiago (Chile); Handford, Michael [Departmento de Biología, Facultad de Ciencias, Universidad de Chile, Avenida Las Palmeras 3425, 7800024 Santiago (Chile); Bonilla, Carlos A. [Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Santiago (Chile); Centro de Desarrollo Urbano Sustentable (CEDEUS), Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Santiago (Chile); and others

2016-11-05

Highlights: • P. frigida presents an extremely high boron toxicity threshold. • Restricting uptake and internal tolerance mechanisms could confer boron tolerance. • P. frigida is a boron hyperaccumulator over a wide range of concentrations. • The species has potential for phytoremediation purposes. - Abstract: Phytoremediation is a promising technology to tackle boron toxicity, which restricts agricultural activities in many arid and semi-arid areas. Puccinellia frigida is a perennial grass that was reported to hyperaccumulate boron in extremely boron-contaminated sites. To further investigate its potential for phytoremediation, we determined its response to boron stress under controlled conditions (hydroponic culture). Also, as a first step towards understanding the mechanisms underlying its extreme tolerance, we evaluated the presence and expression of genes related with boron tolerance. We found that P. frigida grew normally even at highly toxic boron concentrations in the medium (500 mg/L), and within its tissues (>5000 mg/kg DW). We postulate that the strategies conferring this extreme tolerance involve both restricting boron accumulation and an internal tolerance mechanism; this is consistent with the identification of putative genes involved in both mechanisms, including the expression of a possible boron efflux transporter. We also found that P. frigida hyperaccumulated boron over a wide range of boron concentrations. We propose that P. frigida could be used for boron phytoremediation strategies in places with different soil characteristics and boron concentrations. Further studies should pave the way for the development of clean and low-cost solutions to boron toxicity problems.

Pengaruh Mekanisme Corporate Governance Terhadap Peringkat Obligasi Yang Tercatat Di Bursa Efek Indonesia Periode Tahun 2008 – 2010

Directory of Open Access Journals (Sweden)

M Mariana

2016-05-01

Full Text Available Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh mekanisme corporate governance terhadap default risk yang diproksikan dengan peringkat obligasi. Mekanisme corporate governance diproksikan dengan jumlah blockholder, kepemilikan institusi, kepemilikan insider, kualitas audit, komite audit, ukuran dewan komisaris, dan proporsi dewan komisaris independen. Penelitian ini menggunakan leverage, ROA, dan ukuran perusahaan sebagai variable kontrol. Sampel dalam penelitian ini terdiri dari 81 obligasi yang diterbitkan oleh perusahaan yang terdaftar di BEI selama periode 2008-2010 yang telah diperingkat. Penelitian ini menggunakan model analisis ordinal logistic regression untuk menguji pengaruh dari mekanisme corporate governance terhadap peringkat obligasi. Hasil penelitian membuktikan bahwa blockholder, kualitas audit, dan proporsi dewan komisaris independen berpengaruh signifikan terhadap peringkat obligasi. Penelitian ini tidak berhasil membuktikan bahwa kepemilikan institusi, kepemilikan insider, komite audit dan ukuran dewan komisaris berpengaruh secara signifikan terhadap peringkat obligasi.

KAJIAN TERHADAP BEBERAPA METODE PENYUSUTAN DAN PENGARUHNYA TERHADAP PERHITUNGAN BEBAN POKOK PENJUALAN (COST OF GOOD SOLD

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Juniady Slamed Setiawan

2001-01-01

Full Text Available Every company must generate financial statement, that provide information about income, changes in financial position to whom that concerned. In preparing financial statement, each company has a power to choose the accounting methods and technics that recommended by Financial Accounting Standard. Accounting policies adopted by firm has a substanstial impact in financial statement.Therefore the company that has equal performance will report different result.This article try to present the impact of choosing depreciation method in calculating cost of goods sold. Abstract in Bahasa Indonesia : Setiap perusahaan wajib menerbitkan laporan keuangan, yang memberikan informasi mengenai hasil usaha, perubahan posisi keuangan kepada pihak yang memerlukan. Dalam menyusun laporan keuangan, perusahaan memiliki keleluasaan untuk memilih metode dan teknik sepanjang metode yang dipilih tersebut ada dalam SAK (Standar Akuntansi Keuangan. Pemilihan metode akuntansi memiliki dampak yang sangat besar terhadap laporan keuangan yang dihasilkan. Dengan demikian dimungkinkan perusahaan yang sebenarnya memiliki kinerja yang sama dapat melaporkan hasil yang berbeda. Tulisan ini mencoba untuk mengetengahkan dampak pemilihan metode penyusutan terhadap perhitungan beban pokok penjualan (cost of goods sold. Kata kunci: metode penyusutan, beban penyusutan, aktiva tetap, beban pokok penjualan.

New techniques for producing thin boron films

International Nuclear Information System (INIS)

Thomas, G.E.

1988-01-01

A review will be presented of methods for producing thin boron films using an electron gun. Previous papers have had the problem of spattering of the boron source during the evaporation. Methods for reducing this problem will also be presented. 12 refs., 4 figs

Pengaruh Ekstrak Alang-alang, Babadotan dan Teki terhadap Penyakit Antraknosa pada Buah Pisang Kultivar Cavendish

OpenAIRE

Intan Zahara Arie; Joko Prasetyo; Efri Efri

2015-01-01

Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak alang-alang (Imperata cylindrica), teki (Cyperus rotundus), dan babadotan (Ageratum conyzoides) terhadap pertumbuhan dan sporulasi Colletotrichum musae. Penelitian juga bertujuan mengetahui pengaruh ekstrak alang-alang, teki dan babadotan terhadap keparahan penyakit antraknosa secara in vivo.Penelitian dilaksanakan di Laboratorium Penyakit Tumbuhan, Fakultas Pertanian, Universitas Lampung, dari bulan Juni sampai dengan September 2014....

PENGARUH PROFESIONALISME DAN INDEPENDENSI AUDITOR INTERNAL TERHADAP KUALITAS AUDIT: STUDI PADA INSPEKTORAT PROPINSI JAWA BARAT

Directory of Open Access Journals (Sweden)

Susilawati Susilawati

2015-08-01

Tujuan Penelitian ini adalah: pertama, untuk mengetahui serta menganalisis pengaruh Profesionalisme dan Independensi Auditor Internal secara simultan terhadap kualitas audit pada Inspektorat Provinsi Jawa Barat. Kedua, untuk mengetahui serta menganalisis pengaruh Profesionalisme dan Independensi Auditor Internal secara parsial terhadap kualitas audit pada Inspektorat Provinsi Jawa Barat DOI: 10.15408/etk.v13i2.1886

Anode performance of boron-doped graphites prepared from shot and sponge cokes

Energy Technology Data Exchange (ETDEWEB)

Liu, Tao; Luo, Ruiying [School of Science, Beihang University, Beijing 100083 (China); Yoon, Seong-Ho; Mochida, Isao [Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan)

2010-03-15

The structures and anode performances of graphitized pristine and boron-doped shot and sponge cokes have been comparatively studied by means of scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and galvanostatic measurement. The results show that high degree of graphitization can be obtained by the substituted boron atom in the carbon lattice, and boron in the resultant boron-doped graphites mainly exist in the form of boron carbide and boron substituted in the carbon lattice. Both of boron-doped graphites from shot and sponge cokes obtain discharge capacity of 350 mAh g{sup -1} and coulombic efficiency above 90%. Apart from commonly observed discharge plateau for graphite, boron-doped samples in this study also show a small plateau at ca. 0.06 V. This phenomenon can be explained that Li ion stores in the site to be void-like spaces that are produced by ''molecular bridging'' between the edge sites of graphene layer stack with a release of boron atoms substituted at the edge of graphene layer. The effect of the amount of boron dopant and graphitization temperature on the anode performance of boron-doped graphite are also investigated in this paper. (author)

BC-454 boron-loaded plastic scintillator

International Nuclear Information System (INIS)

Bellian, J.G.

1984-01-01

Prototype samples of plastic scintillators containing up to 10% by weight of natural boron have been produced. The maximum size scintillators made to date are 28 mm dia. x 100 mm long. Rods containing up to 2% boron are now made routinely and work is progressing on higher concentrations. The plastics are clear and emit the same blue fluorescence as other common plastic scintillators. It is expected that rods up to 3'' dia. containing 5% boron will be produced during the next few months. BC-454 is particularly useful in neutron research, materials studies, some types of neutron dosimetry, and monitoring of medium to high energy neutrons in the presence of other types radiation. It combines attractive features that enhance its usefulness to the physics community

Lattice dynamics of {alpha} boron and of boron carbide; Proprietes vibrationnelles du bore {alpha} et du carbure de bore

Energy Technology Data Exchange (ETDEWEB)

Vast, N

1999-07-01

The atomic structure and the lattice dynamics of {alpha} boron and of B{sub 4}C boron carbide have been studied by Density Functional Theory (D.F.T.) and Density Functional Perturbation Theory (D.F.P.T.). The bulk moduli of the unit-cell and of the icosahedron have been investigated, and the equation of state at zero temperature has been determined. In {alpha} boron, Raman diffusion and infrared absorption have been studied under pressure, and the theoretical and experimental Grueneisen coefficients have been compared. In boron carbide, inspection of the theoretical and experimental vibrational spectra has led to the determination of the atomic structure of B{sub 4}C. Finally, the effects of isotopic disorder have been modeled by an exact method beyond the mean-field approximation, and the effects onto the Raman lines has been investigated. The method has been applied to isotopic alloys of diamond and germanium. (author)

PENGARUH KOMITE AUDIT, RETURN ON ASSETS DAN DEBT TO TOTAL ASSETS TERHADAP AUDIT REPORT LAG PADA PERUSAHAAN MANUFAKTUR YANG TERDAFTAR DI BURSA EFEK INDONESIA

OpenAIRE

Ariani,

2014-01-01

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh independensi komite audit terhadap audit report lag, mengetahui pengaruh return on assets terhadap audit report lag dan mengetahui pengaruh debt to total assets terhadap audit report lag. Penelitian ini dilakukan pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia tahun 2010 – 2012. Hasil penelitian menunjukkan bahwa independensi komite audit berpengaruh negatif terhadap audit report lag, return on assets berpen...

Fractionation of boron isotopes in Icelandic hydrothermal systems

International Nuclear Information System (INIS)

Aggarwal, J.K.

1995-01-01

Boron isotope ratios have been determined in a variety of different geothermal waters from hydrothermal systems across Iceland. Isotope ratios from the high temperature meteoric water recharged systems reflect the isotope ratio of the host rocks without any apparent fractionation. Seawater recharged geothermal systems exhibit more positive δ 1 1B values than the meteoric water recharged geothermal systems. Water/rock ratios can be assessed from boron isotope ratios in the saline hydrothermal systems. Low temperature hydrothermal systems also exhibit more positive δ 1 1B than the high temperature systems, indicating fractionation of boron due to absorption of the lighter isotope onto secondary minerals. Fractionation of boron in carbonate deposits may indicate the level of equilibrium attained within the systems. (author). 14 refs., 2 figs

Biological effects of tolerable level chronic boron intake on transcription factors.

Science.gov (United States)

Orenay Boyacioglu, Seda; Korkmaz, Mehmet; Kahraman, Erkan; Yildirim, Hatice; Bora, Selin; Ataman, Osman Yavuz

2017-01-01

The mechanism of boron effect on human transcription and translation has not been fully understood. In the current study it was aimed to reveal the role of boron on the expression of certain transcription factors that play key roles in many cellular pathways on human subjects chronically exposed to low amounts of boron. The boron concentrations in drinking water samples were 1.57±0.06mg/l for boron group while the corresponding value for the control group was 0.016±0.002mg/l. RNA isolation was performed using PAX gene RNA kit on the blood samples from the subjects. The RNA was then reverse transcribed into cDNA and analyzed using the Human Transcription Factors RT 2 Profiler™ PCR Arrays. While the boron amount in urine was detected as 3.56±1.47mg/day in the boron group, it was 0.72±0.30mg/day in the control group. Daily boron intake of the boron and control groups were calculated to be 6.98±3.39 and 1.18±0.41mg/day, respectively. The expression levels of the transcription factor genes were compared between the boron and control groups and no statistically significant difference was detected (P>0.05). The data suggest that boron intake at 6.98±3.39mg/day, which is the dose at which beneficial effects might be seen, does not result in toxicity at molecular level since the expression levels of transcription factors are not changed. Although boron intake over this level will seem to increase RNA synthesis, further examination of the topic is needed using new molecular epidemiological data. Copyright © 2016 Elsevier GmbH. All rights reserved.

Pengaruh Terpaan Informasi Kesehatan di Televisi terhadap Sikap Hidup Sehat Keluarga

Directory of Open Access Journals (Sweden)

Dadan Mulyana

2002-12-01

Full Text Available Masalah yang kaji dalam penelitian ini muncul dari fenomena bahwa pada dewasa ini informasi kesehatan sering ditayangkan melalui televisi, baik televisi milik pemerintah maupun swasta. Penayangan informasi yang berkaitan dengan materi kesehatan disampaikan baiksecara tidak langsung terselip dalam isi berita, sinetron, dan dialog, ataupun secara langsung berupa iklan dan bahkan ada yang dikemas secara khusus dalam sebuah acara tv. Informasi kesehatan yang disiarkan melalui televisi akan menerpa penontonnya dan diduga akan berpengaruh terhadap sikap sehat keluarga pada penontonnya. Hasil penelitian menunjukkan bahwa penayangan informasi kesehatan melalui televisi berpengaruh terhadap sikap Ibu-ibu rumah tangga mengenai hidup sehat dalam keluarga.

Boron stress response and accumulation potential of the extremely tolerant species Puccinellia frigida.

Science.gov (United States)

Rámila, Consuelo D P; Contreras, Samuel A; Di Domenico, Camila; Molina-Montenegro, Marco A; Vega, Andrea; Handford, Michael; Bonilla, Carlos A; Pizarro, Gonzalo E

2016-11-05

Phytoremediation is a promising technology to tackle boron toxicity, which restricts agricultural activities in many arid and semi-arid areas. Puccinellia frigida is a perennial grass that was reported to hyperaccumulate boron in extremely boron-contaminated sites. To further investigate its potential for phytoremediation, we determined its response to boron stress under controlled conditions (hydroponic culture). Also, as a first step towards understanding the mechanisms underlying its extreme tolerance, we evaluated the presence and expression of genes related with boron tolerance. We found that P. frigida grew normally even at highly toxic boron concentrations in the medium (500mg/L), and within its tissues (>5000mg/kg DW). We postulate that the strategies conferring this extreme tolerance involve both restricting boron accumulation and an internal tolerance mechanism; this is consistent with the identification of putative genes involved in both mechanisms, including the expression of a possible boron efflux transporter. We also found that P. frigida hyperaccumulated boron over a wide range of boron concentrations. We propose that P. frigida could be used for boron phytoremediation strategies in places with different soil characteristics and boron concentrations. Further studies should pave the way for the development of clean and low-cost solutions to boron toxicity problems. Copyright © 2016 Elsevier B.V. All rights reserved.

Problems and possibilities of development of boron nitride ceramics

International Nuclear Information System (INIS)

Rusanova, L.N.; Romashin, A.G.; Kulikova, G.I.; Golubeva, O.P.

1988-01-01

The modern state of developments in the field of technology of ceramics produced from boron nitride is analyzed. Substantial difficulties in production of pure ceramics from hexagonal and wurtzite-like boron nitride are stated as related to the structure peculiarities and inhomogeneity of chemical bonds in elementary crystal cells of various modifications. Advantages and disadvantages of familiar technological procedures in production of boron nitride ceramics are compared. A new technology is suggested, which is based on the use of electroorganic compounds for hardening and protection of porous high-purity boron-nitride die from oxidation, and as high-efficient sintered elements for treatment of powders of various structures and further pyrolisis. The method is called thermal molecular lacing (TML). Properties of ceramics produced by the TML method are compared with characteristics of well-known brands of boron nitride ceramics

HUBUNGAN ANTARA HARGA DIRI DENGAN SIKAP TERHADAP PERILAKU SEKSUAL PRANIKAH PADA REMAJA DARI KELUARGA BROKEN HOME

Directory of Open Access Journals (Sweden)

Haesty Mulyana R.D

2010-07-01

Full Text Available Penelitian ini bertujuan untuk mengetahui hubungan antara harga diri dengan sikap terhadap perilaku seksual pranikah pada remaja dengan keluarga broken home. Hipotesis yang diajukan dalam penelitian ini adalah ada hubungan negatif antara harga diri dengan sikap terhadap perilaku seksual pranikah. Pengambilan subjek penelitian ini menggunakan teknik purposive sampling yang berjumlah 50 remaja dari keluarga broken home dengan batasan usia 16-18 tahun dan terdiri dari 28 remaja perempuan dan 22 remaja laki-laki. Pengambilan data penelitian menggunakan Skala Sikap terhadap Perilaku Seksual Pranikah dan Skala Harga Diri. Analisis data dilakukan dengan menggunakan teknik analisis korelasi Product Moment dari Pearson. Hasil analisis menunjukkan nilai rxy sebesar -0.328 (p

Pengaruh Media Massa terhadap Proses Peradilan Pidana dalam Kasus Pencurian Kakao oleh Minah

Directory of Open Access Journals (Sweden)

Kurniawan Akbar

2013-04-01

Full Text Available Di dalam upaya penegakan hukum, media massa memiliki pengaruh yang cukup penting melalui pemberitaannya kepada masyarakat terhadap suatu perkara. Media massa mampu menciptakan suatu opini publik dalam masyarakat terhadap suatu perkara hukum dengan informasi dan berita yang disampaikannya.  Melalui opini publik yang dibangun dalam masyarakat, media massa melakukan fungsi kontrol terhadap proses peradilan atas suatu perkara hukum, tidak terkecuali dalam perkara pidana. Penelitian ini bertujuan untuk menganalisis pengaruh media massa pada proses peradilan pidana dalam kasus pencurian kakao oleh Minah. Data yang digunakan adalah primer dan sekunder. Adapun analisis yang digunakan menggunakan pendekatan yuridis-empiris. Hasil penelitian ini menunjukkan bahwa opini publik terhadap perkara pencurian 3 (tiga kilogram kakao merupakan salah satu contoh dari fungsi kontrol yang dijalankan oleh media massa, dalam hal ini media massa menyoroti proses peradilan pidana yang tidak berkeadilan bagi Minah. Pengaruh media massa tersebut tampak di dalam proses persidangan terhadap terdakwa Minah oleh majelis hakim pada acara sidang III, yaitu dalam hal pertimbangan putusan yang dijatuhkan oleh majelis hakim terhadap terdakwa. In law enforcement, the media has a significant impact to the community through the preaching of a case. The mass media are able to create a public opinion on a matter of law with which it conveys information and news. Through public opinion in society, mass media perform the control functions of the judicial process of a lawsuit, not the exception in criminal cases. This study aims to analyze the influence of mass media on criminal justice processes in cases of theft of cocoa by Minah. The data used are the primary and secondary. The analysis used juridical-empirical approach. These results indicate that public opinion against theft case 3 (three pounds of cocoa is one example of a control function that is run by the mass media. Mass media

Interaction of boron with graphite: A van der Waals density functional study

International Nuclear Information System (INIS)

Liu, Juan; Wang, Chen; Liang, Tongxiang; Lai, Wensheng

2016-01-01

Highlights: • A van der Waals density-functional approach is applied to study the interaction of boron with graphite. • VdW-DF functionals give fair agreement of crystal parameters with experiments. • The π electron approaches boron while adsorbing on graphite surface. • The hole introduced by boron mainly concentrates on boron and the nearest three carbon atoms. • PBE cannot describe the interstitial boron in graphite because of the ignoring binding of graphite sheets. - Abstract: Boron doping has been widely investigated to improve oxidation resistance of graphite. In this work the interaction of boron with graphite is investigated by a van der Waals density-functional approach (vdW-DF). The traditional density-functional theory (DFT) is well accounted for the binding in boron-substituted graphite. However, to investigate the boron atom on graphite surface and the interstitial impurities require use of a description of graphite interlayer binding. Traditional DFT cannot describe the vdW physics, for instance, GGA calculations show no relevant binding between graphite sheets. LDA shows some binding, but they fail to provide an accurate account of vdW forces. In this paper, we compare the calculation results of graphite lattice constant and cohesive energy by several functionals, it shows that vdW-DF such as two optimized functionals optB88-vdW and optB86b-vdW give much improved results than traditional DFT. The vdW-DF approach is then applied to study the interaction of boron with graphite. Boron adsorption, substitution, and intercalation are discussed in terms of structural parameters and electronic structures. When adsorbing on graphite surface, boron behaves as π electron acceptor. The π electron approaches boron atom because of more electropositive of boron than carbon. For substitution situation, the hole introduced by boron mainly concentrates on boron and the nearest three carbon atoms. The B-doped graphite system with the hole has less