bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modelling of Drainage Capillary Pressure: A Comparative Study of Various Analytical Capillary Pressure Formulations in Matching Laboratory Results
Authors: Behrenbruch Peter , Huu Minh Triet , Hoang Tuan Gia , Bui Khang Duy 
Published: October 2016

Abstract
Capillary pressure relationships (drainage) is of importance in both, reservoir engineering and petrophysics. Reservoir engineers use capillary pressure relationships in reservoir engineering calculations and petrophysicists use such relationships in saturation-height modelling. The overall objective of the study presented is to perform a comparative study of various capillary pressure models commonly used by the petroleum industry and to access their ability to match diverse laboratory data.
Over the years many capillary pressure formulations have been proposed to match laboratory data, from the well-known Leverett J-function approach to more recent methods. Generally, formulations may be theoretical, semi-empirical, empirical or statistical basis. The comparative study presented involves the following analytical formulations: modified Leverett J-function, modified Brooks-Corey (MBC), Thomeer, Skelt-Harrison, Lambda (λ) and the more recently established, Modified Carman-Kozeny-Purcell (MCKP) model.
Various types of pore structures may be modelled: homogeneous (narrow), broad (poorer sorting) and bimodal (two distinct distributions) where one of the distributions is often related to pore-fill, or a mixture of distribution types. Results presented in this paper compare application of the above-mentioned methods for homogeneous plugs. It is demonstrated that the MCKP method consistently outperforms the other methods and it is the only method that is able to identify the type of pore throat distribution without any further input data. The advantage of the MCKP method is that it does not contain any fitting parameters. The degree of accuracy of the MCKP model is typically R2 &gt; 0.99. The MCKP model also lends itself very easily to predict capillary pressure relationships from more basic parameters.
Presented are examples with data from two Australian fields, one offshore and one onshore.
Tight TVD Control on Australia’s North West Shelf Through a Cutting Edge Solution High-Definition Surveying
Authors: Naveed Muhammad , Kirthi Singam Chandrasekhar , Viandante Mauro , Ali Malik Kashif , AKhmadeev Vadim , Jury Ben , Belson Will , Wroth Andy 
Published: October 2016

Abstract
It is widely recognized in the industry that 30m survey intervals are too large to capture the true trajectory of the directional borehole and can result in significant True Vertical Depth (TVD) errors. This is particularly true when drilling with motors or geosteering in reservoirs with tight-TVD tolerance. Based on experience with horizontal wells drilled in North West Shelf (Vincent, Wandoo and Coniston drilling campaigns), a new technique of high definition surveying (HDS) was introduced.
The North West Shelf (NWS) in Australia imposes significant challenges for maintaining constant directional control while drilling in sand layers, which can be unconsolidated and include or traverse faulted or fractured zones. In such formations, TVD control in horizontal wells is a challenge. To improve control, extra surveys would be needed to reduce the vertical uncertainty; this process would be very time-consuming iand adds a risk of stuck pipe and hole washout.
Additionally, as the field become more congested through infill drilling, the risk of collision with nearby wells would increase because of poor TVD control.
The HDS gives a more accurate reconstruction of the wellbore position while drilling with respect to the pre-drilled geological model all the way out to target depth.
Reservoir mapping while drilling (RMWD) and Bed boundary mapping (BBM) services both measure the distance to nearby boundaries. These services map the form and position of reservoir boundary structure with respect to the associated well path. Therefore, the position of the reservoir structure in space is directly related to the directional wellbore survey. An inaccurate survey leads to errors in reservoir geometries and structural tie-in to the adjacent exploration and development wells. Because the wellbore is more accurately defined using HDS, so is the reservoir structure when coupled with RMWD services. This greater definition has enabled better well planning to drive maximum value extraction from reservoirs. With these features in place HDS has become an integral part for RMWD and BBM Services.
This paper illustrates the potential benefits of using HDS as a further service quality improvement component applicable to drilling horizontal wellbores and gives examples of practical implementation such as borehole tortuosity, torque and drag modelling, well placement and drilling and completion optimization.
Photochemical Elimination of Endocrine Disrupting Chemical (EDC) by ZnO Nanoparticles, Synthesized by Gel Combustion
Authors: Rajesha J. B. , Ramasami Alamelu. K. , Nagaraju G. , Balakrishna Geetha. R. 
Published: October 2016

ABSTRACT: Zinc Oxide (ZnO) nanoparticles prepared by gel combustion synthesis using cassava pearl starch have been characterized by various microscopy and spectroscopy techniques. The particle size averaged around 45 nm, revealed zincite structure, hexagonal, agglomerated morphology and possessed an excellent photocatalytic activity in sunlight. Contrary to the existing literature survey, this photocatalyst possessed a band gap of 2.7 eV, causing an extended absorption towards broader range of the solar spectrum, thus making it an excellent visible light‐activated photocatalyst. Photocatalytic activity was investigated on one of the highly resistant, most‐focused endocrine disrupting chemical (EDC) benzophenone‐3 (BP‐3), which is used in personnel care products. The observations reveal a near complete photooxidative degradation of BP‐3. A reaction mechanism for the photooxidative pathway was proposed based on the isolated intermediates.
Awareness, Access and Use of Internet Self-Help Websites for Depression by University Students
Authors: Culjak Gordana , Kowalenko Nick , Tennant Christopher 
Published: October 2016

Background
University students have a higher prevalence rate of depression than the average 18 to 24 year old. Internet self-help has been demonstrated to be effective in decreasing self-rated measures of depression in this population, so it is important to explore the awareness, access and use of such self-help resources in this population.

Objective
The objective of this study is to explore university students’ awareness, access and use of Internet self-help websites for depression and related problems.

Methods
A total of 2691 university students were surveyed at 3 time points.

Results
When asked about browsing behavior, 69.6% (1494/2146) of students reported using the Internet for entertainment. Most students were not familiar with self-help websites for emotional health, although this awareness increased as they completed further assessments. Most students considered user-friendliness, content and interactivity as very important in the design of a self-help website. After being exposed to a self-help website, more students reported visiting websites for emotional health than those who had not been exposed.

Conclusions
More students reported visiting self-help websites after becoming aware of such resources. Increased awareness of depression and related treatment resources may increase use of such resources. It is important to increase public awareness with the aim of increasing access to targeted strategies for young people.
Albuminuria Changes and Cardiovascular and Renal Outcomes in Type 1 Diabetes: The DCCT/EDIC Study
Authors: de Boer Ian H. , Gao Xiaoyu , Cleary Patricia A. , Bebu Ionut , Lachin John M. , Molitch Mark E. , Orchard Trevor , Paterson Andrew D. , Perkins Bruce A. , Steffes Michael W. , Zinman Bernard ,   for the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) Research Group
Published: October 2016

Background and objectives
In trials of people with type 2 diabetes, albuminuria reduction with renin-angiotensin system inhibitors is associated with lower risks of cardiovascular events and CKD progression. We tested whether progression or remission of microalbuminuria is associated with cardiovascular and renal risk in a well characterized cohort of type 1 diabetes.

Design, setting, participants, & measurements
We studied 1441 participants in the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications study. Albumin excretion rate (AER) was quantified annually or biennially for up to 30 years. For each participant, albuminuria status was defined over time as normoalbuminuria (AER continuously <30 mg/d), sustained microalbuminuria (AER, 30–299 mg/d on two consecutive visits), macroalbuminuria (AER≥300 mg/d), or remitted microalbuminuria (transition from sustained microalbuminuria to AER<30 mg/d on two consecutive visits). We tested associations of time-updated albuminuria status with adjudicated clinical cardiovascular events, the development of reduced GFR (<60 ml/min per 1.73 m2 on two consecutive visits), and subclinical cardiovascular disease.

Results
At least one cardiovascular event occurred in 184 participants, and 98 participants developed reduced eGFR. Compared with normoalbuminuria, sustained microalbuminuria, remitted microalbuminuria, and macroalbuminuria were each associated with higher risk of cardiovascular events (adjusted hazard ratios [HRs] and 95% confidence intervals [95% CIs]: 1.79 [1.13 to 2.85], 2.62 [1.68 to 4.07], and 2.65 [1.68 to 4.19], respectively) and reduced eGFR (adjusted HRs [95% CIs], 5.26 [2.43 to 11.41], 4.36 [1.80 to 10.57], and 54.35 [30.79 to 95.94], respectively). Compared with sustained microalbuminuria, remission to normoalbuminuria was not associated with reduced risk of cardiovascular events (adjusted HR, 1.33; 95% CI, 0.68 to 2.59) or reduced eGFR (adjusted HR, 1.75; 95% CI, 0.56 to 5.49). Compared with normoalbuminuria, sustained microalbuminuria, remitted microalbuminuria, and macroalbuminuria were associated with greater carotid intima-media thickness, and macroalbuminuria was associated with a greater degree of coronary artery calcification.

Conclusions
In type 1 diabetes, microalbuminuria and macroalbuminuria are associated with higher risks of cardiovascular disease and reduced eGFR, but achieving a remission of established microalbuminuria to normoalbuminuria does not appear to improve outcomes.
Rinotraqueíte infecciosa bovina: revisão
Authors: Viu Marco Antônio de Oliveira , Dias Luzia Renata Oliveira , Lopes Dyomar Toledo , Viu Alessandra Feijó Marcondes , Ferraz Henrique Trevizoli 
Published: October 2016

The infectious bovine rhinotracheitis (IBR) is a specific infection, caused by herpes viruses. This disease causes a negative economic impact in cattle production system resultant of the growth retardation of young animals, less dairy production, embryonic and fetal death, and abortion more frequent in the second or third trimester of pregnancy. There is spread of type 1 bovine herpes virus (HVB-1) for all regions of Brazil, reaching high infection rates in herds. This review aimed to point the main aspects of this disease, in order to alert professionals about the importance of performing an effective control and implement prevention programs, preventing the spread of the disease in cattle herds.
ANALISIS DAYA HASIL LATEKS DAN HERITABILITAS KARAKTER KUANTITATIF DARI BEBERAPA GENOTIPE KARET PP/07/04
Authors: Sayurandi Sayurandi , Wirnas Desta , Woelan Sekar 
Published: October 2016

Tujuan penelitian ini adalah untuk mempelajari karakter pertumbuhan, daya hasil lateks dan heritabilitas karakter kuantitatif beberapa genotipe karet PP/07/04. Sebanyak lima belas genotipe karet dan dua klon pembanding PB 260 dan RRIC 100 diuji pada penelitian ini. Pengujian genotipe tersebut dibangun di Kebun Percobaan Balai Penelitian Sungei Putih, Pusat Penelitian Karet pada tahun 2004, yang terletak di Kabupaten Deli Serdang - Provinsi Sumatera Utara. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan tiga ulangan. Hasil penelitian menunjukkan bahwa genotipe berpengaruh nyata terhadap dua belas karakter yang diamati yaitu lilit batang, tebal kulit, jumlah cincin pembuluh lateks, diameter sel pembuluh lateks, panjang alur sadap, kecepatan aliran lateks, indeks penyumbatan, kadar fosfat anorganik, kadar sukrosa, kadar thiol, kadar karet kering, dan daya hasil lateks. Berdasarkan karakter pertumbuhan dan daya hasil lateks menunjukkan bahwa genotipe HP 92/309 memiliki potensi hasil lateks tinggi, sedangkan genotipe HP 92/542 memiliki hasil lateks tinggi dan pertumbuhan jagur. Dua belas karakter yang diamati memiliki nilai heritabilitas tinggi dengan nilai h2bs antara 0,52 – 0,95. Hal ini menunjukkan bahwa karakter-karakter tersebut lebih dipengaruhi oleh faktor genetik. Diterima : 5 April 2016 / Direvisi : 30 Juni 2016 / Disetujui : 3 Agustus 2016 How to Cite : Sayurandi, S., Wirnas, D., & Woelan, S. (2016). Analisis daya hasil lateks dan heritabilitas karakter kuantitatif dari beberapa genotipe karet PP/07/04. Jurnal Penelitian Karet, 34(1), 1-12. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/226
KELAYAKAN PENGEMBANGAN PERKEBUNAN KARET DI KABUPATEN TANAH BUMBU KALIMANTAN SELATAN
Authors: Fauzi Iif Rahmat , Bukit Ernita , Andriyanto Mochlisin , Istianto Istianto 
Published: October 2016

Kalimantan Selatan merupakan salah satu sentra perkebunan karet di Indonesia, tidak terkecuali tanaman karet. Salah satu diantara tiga belas kabupaten di Provinsi Kalimantan Selatan yang memiliki potensi bagi pengembangan perkebunan karet adalah Kabupaten Tanah Bumbu. Dengan teknik budidaya yang masih tradisional, saat ini produktivitas lahan perkebunan karet di Kabupaten Tanah Bumbu umumnya masih rendah. Penelitian ini bertujuan untuk menilai kelayakan pengembangan perkebunan karet di Kabupaten Tanah Bumbu. Penelitian dilakukan pada tahun 2014 dengan metode survei dan dianalisis secara diskriptif kualitatif dan kuantitatif melalui pendekatan analisis mengenai dampak lingkungan (AMDAL) dan kelayakan finansial proyek menurut empat kriteria investasi yaitu Nett Present Value (NPV), Internal Rate of Return (IRR), Benefit Cost Ratio (B/C Ratio), dan Payback Period (PBP). Hasil analisis menunjukkan bahwa pengembangan perkebunan karet di kedua kecamatan sampel seluas ±5.620 Ha di Kecamatan Kusan Hulu sebagai Satuan Lahan I dan ±11.261 Ha di Kecamatan Satui sebagai Satuan Lahan II mendapatkan respon positif dari 90% responden. Secara finansial besaran nilai dari empat kriteria investasi masing-masing adalah NPV sebesar IDR 243 Milyar dan IDR 187Milyar, B/C ratio sebesar 2,08 dan 1,99, selanjutnya IRR sebesar 27,20% dan 17,53%, dan PBP selama 8 tahun 3 bulan dan 13 tahun 9 bulan. Berdasarkan keempat kriteria tersebut maka program pengembangan perkebunan karet di Kabupaten Tanah Bumbu dinilai layak. Diterima : 4 Agustus 2015 / Direvisi : 15 Juli 2016 / Disetujui : 26 Juli 2016 How to Cite : Fauzi, I., Bukit, E., Andriyanto, M., & Istianto, I. (2016). Kelayakan pengembangan perkebunan karet di Kabupaten Tanah Bumbu Kalimantan Selatan. Jurnal Penelitian Karet, 34(1), 107-118. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/229
KARAKTERISASI KARET SIKLO BERBASIS LATEKS KARET ALAM BERBOBOT MOLEKUL RENDAH
Authors: Cifriadi Adi , Budianto Emil , Alfa Ary Achyar 
Published: October 2016

Untuk mengembangkan penggunaan karet siklo berbasis lateks karet alam, penelitian karakterisasi karet siklo yang berasal dari lateks karet alam dan lateks karet alam berbobot molekul rendah telah dilakukan. Penelitian dilakukan dalam dua tahap. Tahap pertama dilakukan penelitian tentang degradasi lateks karet alam menggunakan kombinasi bahan pendegradasi H2O2 dan NaNO2 untuk menghasilkan lateks karet alam berbobot molekul rendah. Tahap kedua dipelajari karakteristik karet siklo dari siklisasi lateks karet alam dan lateks karet alam berbobot molekul rendah. Hasil penelitian menunjukkan bahwa degradasi lateks karet alam pada temperatur reaksi sebesar 70oC dengan bahan pendegradasi H2O2 1 bsk dan NaNO2 3 bsk selama 8 jam waktu reaksi dapat menghasilkan lateks karet alam yang memiliki bobot molekul rendah. Karet siklo dari siklisasi lateks karet alam berbobot molekul rendah memiliki daya rekatan lebih baik pada substrat karet-logam dan logam-logam. How to Cite : Cifriadi, A., Budianto, E., & Alfa, A. A. (2016). Karakterisasi karet siklo berbasis lateks karet alam berbobot molekul rendah. Jurnal Penelitian Karet, 29(1), 35-48. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/110
KAJIAN TATA NIAGA KARET ALAM: UPAYA PENINGKATAN KESEJAHTERAAN PETANI
Authors: Napitupulu Dompak 
Published: October 2016

Komoditas karet masih merupakan salah satu sumber pendapatan rumahtangga petani di Provinsi Jambi. Namun terlepas dari usaha perkebunan yang telah diwariskan secara turun temurun tersebut, secara umum dapat dikatakan bahwa petani karet rakyat identik dengan kemiskinan. Adapun tujuan penelitian ini adalah untuk mempelajari sistem pemasaran karet rakyat di Provinsi Jambi, serta mengkaji peluang peningkatan pendapatan petani karet rakyat melalui perbaikan sistem pemasaran karet rakyat di Provinsi Jambi. Terdapat sejumlah 5 (lima) lembaga yang membentuk 12 kombinasi saluran pemasaran yang terlibat dalam pengaliran bokar dari titik produsen sampai ke pabrik crumb rubber dengan kualitas karet yang diperdagangkan masih rendah. Sementara itu, hasil analisis data menunjukkan bahwa pada dasarnya terdapat hubungan yang nyata antara kualitas bokar yang diperdagangkan dengan harga yang diterima oleh petani. Hal ini berarti seyogyanya petani menghasilkan bokar mutu baik agar pendapatan mereka dapat lebih tinggi. How to Cite : Napitupulu, D. (2011). Kajian tata niaga karet alam: upaya peningkatan kesejahteraan petani. Jurnal Penelitian Karet, 29(1), 76-92. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/113
RANCANG BANGUN MENARA DEAMONIASI UNTUK PERBAIKAN MUTU LATEKS SKIM
Authors: Prastanto Henry 
Published: October 2016

Lateks skim adalah hasil samping dalam produksi lateks pekat pusingan, kadar karet keringnya sangat rendah dan mengandung amoniak yang cukup tinggi. Penurunan kadar amoniak adalah langkah yang sangat penting dan harus dilakukan dalam rangka mengurangi biaya bahan penggumpal. Penurunan kadar amoniak di industri pada umumnya dilakukan dengan dengan menara bahan isian dengan perancangan khusus tergantung pada banyak faktor misalnya sifat cairan, kecepatang penguapan amoniak dan efisiensi penguapan yang diinginkan. Dalam penelitian ini menara deamoniasi dirancang untuk kapasitas lateks skim 1500 L/jam dengan kadar amoniak mula-mula 0,5% b/b untuk menghasilkan lateks skim dengan kadar amoniak 0,25% b/b. Dimensi menara didesain dengan menggunakan prinsip perpindahan massa dan neraca massa yang biasa digunakan dalam operasi teknik kimia. Diterima : 16 Agustus 2011; Disetujui : 25 Oktober 2011How to Cite : Prastanto, H. (2011). Rancang bangun menara deamoniasi untuk perbaikan mutu lateks skim. Jurnal Penelitian Karet, 29(2), 142-150. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/246
PERMINTAAN EKSPOR SARUNG TANGAN LATEKS MALAYSIA
Authors: Syarifa Lina Fatayati 
Published: October 2016

Malaysia merupakan penyalur terkemuka untuk produk sarung tangan medis/bedah, dengan menguasai 45% dari permintaan dunia. Namun, permintaan ekspor untuk sarung tangan tersebut berfluktuasi dari waktu ke waktu. Hal ini antara lain disebabkan oleh perubahan faktor-faktor harga ekspor, pendapatan luar negeri, dan harga karet sintetis dunia. Untuk meningkatkan ekspornya, beberapa kebijakan telah dikeluarkan melalui Industrial Master Plan. Tujuan penelitian ini adalah untuk mengestimasi elastisitas permintaan ekspor sarung tangan terhadap perubahan faktor-faktor yang mempengaruhi permintaan ekspornya secara signifikan. Data triwulan digunakan untuk mengestimasi fungsi permintaan ekspor dengan model ECM. Hasil estimasi menunjukkan bahwa elastisitas harga ekspor sarung tangan signifikan nilainya sebesar -1,14, menunjukkan bahwa nilainya adalah elastis. Dengan demikian, perubahan harga ekspor sarung tangan akan memberikan efek sangat penting bagi jumlah ekspor yang diminta. Berdasarkan elastisitas pendapatan luar negeri terhadap sarung tangan adalah 0,5 dan tidak signifikan secara statistik, menunjukkan bahwa pendapatan luar negeri tidak menjadi penentu penting dari permintaan ekspor sarung tangan. Kemudian, elastisitas harga substitusi nilainya sebesar 0,05, menunjukkan bahwa nilainya inelastis terhadap karet sintetis. Diterima : 2 September 2011; Disetujui : 26 November 2011How to Cite : Syarifa, L. F. (2011). Permintaan ekspor sarung tangan lateks malaysia. Jurnal Penelitian Karet, 29(2), 151-158. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/247
PENAPISAN JAMUR DAN BAKTERI ANTAGONIS TERHADAP JAMUR AKAR PUTIH (Rigidoporus microporus) DARI RIZOSFER TANAMAN LIDAH MERTUA (Sansevieria trifasciata Prain)
Authors: Febbiyanti Tri Rapani 
Published: October 2016

Penyakit akar putih yang disebabkan oleh jamur Rigidoporus microporus merupakan salah satu penyakit penting diperkebunan karet karena mengakibatkan kerugian yang cukup berarti. Mulai tahun 2003, Balai Penelitian Sembawa telah memperoleh suatu pengendalian alternatif yang murah, mudah didapat dan diterapkan di perkebunan rakyat yaitu pemanfaatan tumbuhan antagonis. Tumbuhan antagonis adalah suatu tumbuhan dari alam sekitar yang mempunyai kemampuan untuk menekan atau menghambat perkembangan penyakit akar putih. Tumbuhan antagonis memberikan pengaruh langsung dan tidak langsung terhadap perkembangan jamur akar putih dalam tanah. Faktor utama yang berpengaruh secara langsung adalah eksudat akar yang bersifat antibiotik, sedangkan faktor sekunder yang berpengaruh secara tidak langsung adalah sifat biokimia-fisik tanah. Dari 12 tumbuhan antagonis yang telah diuji di lapangan, lidah mertua merupakan tanaman yang paling efektif dalam mengendalikan jamur akar putih karena tanaman tersebut lebih tahan terhadap kondisi lingkungan yang ektrim dan adanya zat anti mikroba pada tumbuhan ini. Penelitian ini bermaksud mengeksplorasi jamur dan bakteri yang terdapat di rizosfer tanaman lidah mertua secara laboratorium. Hasil penelitian menunjukkan bahwa terdapat 11 jenis bakteri dan 7 jenis jamur yang diperoleh dari rizosfer lidah mertua. Dari 11 isolat bakteri tersebut, 4 diantaranya tergolong bakteri gram positif dan 7 tergolong bakteri gram negatif, kemudian terdapat suatu interaksi antagonisme antara isolat bakteri L. M. 5 dan L. M. 6 dengan jamur Rigidoporus microporus. Kemudian, dari 7 isolat jamur yang ditemukan terdapat 4 isolat jamur yang merupakan jamur antagonis terhadap jamur Rigidoporus microporus. Diterima : 11 April 2012; Disetujui : 10 Juli 2012 How to Cite : Febbiyanti, T. R. (2016). Penapisan jamur dan bakteri antagonis terhadap jamur akar putih (Rigidoporus microporus) dari rizosfer tanaman lidah mertua (Sansevieria trifasciata Prain). Jurnal Penelitian Karet, 30(1), 1-11. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/115