bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of Lateral Vibration of Drilling String with Mass Imbalance Using Finite Element
Authors: Irawan Sonny , Shanmugam Arun Kumar , Hidayat Mas Irfan P. , Biyanto Totok R 
Published: July 2019

The objectives of this study were to analyze the first three critical frequency, critical speeds and mode shapes of the drilling string due to lateral vibration. Drilling string vibrations pose a major challenge to the operational efficiency of the drilling process in the oil and gas industry. The mass imbalance in the drilling string caused by Measured While Drilling (MWD) tools and drill collar sag disrupts the accuracy of the drilling operation and can give rise to huge vibration thereby damaging the down hole components. Since the surface readings are not reliable measured of drilling string lateral vibration, it becomes necessary to study drilling string vibration under Finite Element method. In this project, ANSYS software was used to build the geometry of a drilling string model and appropriate boundary conditions were applied to the model such that the drilling string experiences lateral vibrations. The component of mass imbalance was introduced to the drilling string by adding an equivalent weight eccentrically on one side of the drilling string. Modal analysis was performed to determine the mode shapes and the first three critical frequencies of the drilling string. The effect of mass imbalance was studied by comparing the first three critical frequencies before and after the addition of the imbalance. The results showed an increase in natural frequency to 2.03Hz, 2.23Hz, and 4.63Hz were imposed on the deformation of drilling string. Since the normal operating speeds of a drilling string rotary table is around 100-200 RPM, it was clear that the drilling string without mass imbalance, the resonance of the drilling string occurs at 85 and 262 RPM which is clearly out of the operating speeds. But when a mass imbalance is introduced to the drilling string, the resonance occurs at 121, 133 and 277 RPM. The two operating speeds cause resonance which can critically damage the drilling string. The drilling string which consists of the stabilisers and bit are subject to almost no displacements at all. The best practices of this study are very useful for identify the safe operating ranges of rotary speed for the drilling string and identify the lateral displacement of a critical component for a range of frequencies, thereby avoiding damage to the drilling string.
The Improvement of Yield and Quality of Soybeans in a Coastal Area Using Low Input Technology Based on Biofertilizers
Authors: Bertham Yudhy Harini , Arifin Zainal , Nusantara Abimanyu Dipo 
Published: July 2019

Indonesia is an archipelagic country, having vast coastal areas which have not been utilized optimally for crop cultivation because their poor soil properties become a limiting factor for plant growth. It is, therefore, necessary to use cultivation technology, such as the use of biofertilizers to overcome this limiting factor. The objective of this study was to determine the appropriate biofertilizers for improving the quality of soybean seeds, the rhizosphere environment, and the soybean yield in a coastal area. The study was conducted in Bengkulu, Indonesia, using Randomized Complete Block Design, with a single factor, namely biofertilizers. Six treatments were applied, namely the addition of Arbuscular Mycorrhizal Fungi (AMF), phosphate-solubilizing fungi (PSF), Rhizobium (R), AMF+PSF, R+AMF, and R+PSF. The results of this study showed that, in general, the inoculation of biofertilizers could increase the yield of soybeans in the coastal area, as indicated by the higher yield of plants in this study than those as described in the literature. The dual inoculation of PSF+AMF resulted in the highest protein content, the largest populations of PSF and AMF, the highest percentage of root colonization of AMF, plant phosphorus concentration and absorption, the weight of seeds per plant and yield. Meanwhile, the highest fat content of seed was found in the plants inoculated with PSF. In coastal soil, the dual application of biofertilizers, namely PSF and AMF, should be done, instead of a single application. Further studies are needed to increase the protein content and to reduce the fat content of soybean seeds.
Combining ABC and VED Analysis for Managing Medicine Inventory (Case Study at Community Development Elderly in Indonesia)
Authors: Lestari Fitra , Ulfah - , Suherman - , Azwar Budi , Fithri Prima 
Published: July 2019

Community development elderly is a community managed by the non-government organization (NGO) with obtaining the funding from several sources involving government, donations and own community. Currently, there are many activities related to physical fitness for elderly people such as gymnastics, physical leisure activities, and other social activities. Nevertheless, older adults have many threats of illness that could have appeared suddenly. Thus, it needs a series of activities to prevent the emergence of disease. This study aims to determine appropriate programs of older adults based on illness complaints through analyzing the medicine inventory. This study combined ABC and VED analysis of inventory model in supporting healthcare consulting services for a community development elderly in Indonesia. The application ABC analysis found some item from three categories consisting category A of 33 items, category B of 26 items and Category C of 26 items. Then, VED analysis classification of medicine into seven items of Vital, 12 items of Essential and 12 items of Desirable. Thus, the result of a healthcare consulting service was obtained that older adults needed 31 types of medicines. The finding of this study also showed that the high frequency of illness complaints from older adults related to problems of Neurological, Hypertension, and Musculoskeletal. The implication of this study proved that the community development elderly must consider providing the priority programs of healthcare consulting services focus on three main problems of older adults. Further study is suggested to implement safety stock and reorder point for providing medicine inventory.
MicroRNA‑21 and myocardial remodeling with the reduction of the nephron mass
Authors: Beresneva O. N. , Zaraiski M. I. , Kulikov A. N. , Parastaeva M. M. , Ivanova G. T. , Okovityi S. V. , Galkina O. V. , Kucher A. G. , Kayukov I. G. 
Published: July 2019

Background and objective.Currently, the role of miRNA‑21 in the development of heart and kidney damage and their interaction remains unclear. Therefore, the aim of this work is to assess the impact of changes in the expression of microRNA‑21 in myocardial tissue in the development of cardiac remodeling with chronic reduction in the mass of active nephrons in the experiment.Design and methods.Wistar drain rats were divided into two groups. The first (control) group included nine falsely operated animals. The second (n = 9) group included rats with step-by-step resection of 5/6 renal tissue. After 4 months after surgery, blood pressure (BP) was measured, heart ultrasound (echocardiography, EchoCG) was performed and the level of relative expression of microRNA‑21 in myocardial tissue was determined.Results. The rats with an experimental decrease in the mass of functioning nephrons, showed significantly higher levels of BP, microRNA‑21 expression in the myocardium and the thickness of the interventricular septum (according to EchoCG). They also demonstrated smaller end-systolic dimension of the left ventricle and systolic motion of the mitral valve ring.Conclusions. Our data indicate the potential role of miRNA‑21 in the development of concentric left ventricular remodeling while reducing the number of functioning nephrons. This remodeling is characterized by the prevalence of myocardial hypertrophy over fibrosis. However, the specific mechanisms linking microRNA in the pathogenesis of heart remodeling require further research.
Hubungan Pengetahuan dengan Sikap Masyarakat dalam Pencegahan Penyakit Demam Berdarah Dengue di Desa Betalemba Kecamatan Poso Pesisir Selatan
Authors: Assa Anggri 
Published: July 2019

<p><strong>Background:</strong> Dengue Hemorrhagic Fever (DHF) is one of many infectious diseases caused by the bite of the <em>Aedes aegypti</em> mosquito which is commonly found in tropical and subtropical regions throughout the world. This disease can occur throughout the year and attack every individual regardless of age. This disease appears related to environmental conditions and community behavior. <strong>Research Methods</strong>: This research is a quantitative type with a correlation design and cross sectional approach. The population is all the communities in the village of Betalemba with 303 families. Until that is a portion of the population of 171. The sampling technique is proportional stratified random sampling. The data were analyzed and tested using the Chi-Square test with a value of P &lt;0.05. <strong>Results</strong>: showed 83 respondents (38.8%) were sufficiently knowledgeable, 68 knowledgeable respondents (39.8%) and 20 (11.7%) less knowledgeable respondents, then respondents who had enough attitudes 105 (61.4%), respondents who have good attitudes as much as 53 (31.0%) and respondents who have less attitudes as much as 13 (7.6%). <strong>Conclusion</strong>: Knowledge relates to people's attitudes in preventing dengue disease in Betalemba village, Poso Pesisir Selatan District.</p><p> <strong>Keywords</strong>: Knowledge, Attitude, DHF</p>
Hubungan Pengetahuan Dengan Kepatuhan Ibu Hamil Dalam Mengkonsumsi Tablet Zat Besi (Fe) Di Wilayah Kerja Puskesmas Lawanga Kabupaten Poso
Authors: Hastanti Hastanti 
Published: July 2019

<p><strong>Latar Belakang:</strong> Tablet zat besi (Fe) sebagai suplemen yang diberikan pada ibu hamil menurut aturan harus dikonsumsi setiap hari, namun karena berbagai alasan misalnya pengetahuan, sikap dan tindakan ibu hamil yang kurang baik, efek samping tablet yang ditimbulkan tablet tersebut dapat menyebabkan seseorang untuk kurang mematuhi konsumsi tablet zat besi (Fe) secara benar sehingga tujuan dari pemberian tablet tersebut tidak tercapai.</p><p><strong>Tujuan:</strong> Mengetahui Hubungan Pengetahuan Dengan Kepatuhan Ibu Hamil Dalam Mengkonsumsi Tablet Zat Besi (Ferossus) Di Wilayah Kerja Puskesmas Lawanga Kabupaten Poso.</p><p><strong>Metode </strong><strong>Penelitian:</strong> Jenis penelitian yang digunakan adalah deskriptif analitik dengan pendekatan <em>cross sectional. </em>Jumlah responden sebanyak 46 ibu hamil dengan menggunakan tehknik <em>total</em><em> Sampling</em>. Data dianalisa dengan menggunakan uji Chi-square.</p><p><strong>Hasil penelitian :</strong> Menunjukkan bahwa 56,5 % responden memiliki pengetahuan baik, tentang tablet zat bezi (Fe), Sebesar 60,9% responden patuh mengkonsumsi tablet zat besi (Fe). Ada hubungan Pengetahuan dengan Kepatuhan Ibu Hamil dalam Mengkonsumsi Tablet Zat Besi (Fe) nilai p = 0,000 (p&lt;0,05)</p><p><strong>Kesimpulan:</strong> Ada hubungan antara Pengetahuan dengan Kepatuhan Ibu Hamil dalam Mengkonsumsi Tablet Zat Besi (Fe) di Puskesmas Lawanga Kabupaten Poso.</p>
One Year of Sustainability Is Not Enough
Authors: Alnuaim Sami 
Published: July 2019

President's column
I cannot believe that a year has passed since I was inaugurated as SPE president in Dallas last September. My term has passed at the speed of light as I have traveled all over the world meeting our members and representing SPE at conferences and other events. I believe what I enjoyed the most was visiting with our student members in university chapters, engaging with our industry’s future leaders. I saw the pride and hope in their eyes. Our industry, and our world, face some significant challenges in the decades ahead. I saw in their faces the willingness to embrace and solve those challenges. Many are ready to call themselves Citizen Engineers, and bring best-in-class environmental and social practices to bear, even as they strive to meet growing world energy demand.
According to the latest BP Energy Outlook, over the next 20 years, world reliance on oil and gas in the overall energy mix will decline only slightly in percentage terms, and will actually rise in total volume supplied. By 2040, meeting projections for world energy demand will require a 6% in-crease in oil production and a 33% increase in natural gas production. In both cases, this increase is after compensating for natural declines of 3–5% per year in conventional fields and much higher declines in unconventional resources. Being able to find, develop, produce, and deliver that level of resources to power world economies will be a significant undertaking.
That challenge is coupled with the growing environmental and social challenges of our planet. World population will increase by 1.7 billion in the next 20 years, with almost half that growth in Africa, which currently has the highest levels of energy poverty. According to the Energy Outlook, the world will need to double current gross domestic product by 2040 to support these new inhabitants. The biggest environmental challenge is rising CO2 emissions. World opinion holds fossil fuels responsible, and that is putting increasing pressure on our license to operate. We must respond—not by denying or debating our role, but by demonstrating leadership in addressing the problem. I am encouraged by the efforts I see happening across our industry to address CO2 emissions, with substantial investments, initiatives, and solid plans being•made.•
During my talks around the world, I highlighted 10 game changers where our industry can help to arrest the CO2 emission increase.
Reducing gas flaring. Our industry has successfully reduced the amount of flared gas by 15% while oil production increased by 33%. Flared gas has value—capturing the associated natural gas and diverting it to power generation or petrochemicals acquires that value as well as significantly reducing methane and CO2 emissions. I see huge opportunities for more investment in countries currently flaring their associated gas so they can generate electric power for their citizens and industries.
Workshop in Kuwait Lifts the Bar in Digital Transformation for O&G
Authors: Capello Maria Angela , Al-Humoud Jamal 
Published: July 2019

Cloud platforms, real-time monitoring, and gamification of workflows are not new to the oil and gas sector. A growing number of organizations are adopting digital transformation (DT), seeking innovative strategies, safer operations, and business optimization. In line with the exponentially increasing pace of technology advancement, pressures of change are mounting, and experience shows that not all transitions are successful or straightforward. DT for the upstream and downstream processes of oil and gas is available and ready to be implemented with step and disruptive changes dramatically uplifting the traditional way of conducting business, boosting efficiencies, and empowering cost optimization strategies.
To analyze the current status of DT strategies and the pace of its implementation in the oil sector with a special emphasis on the Middle East, SPE held an Applied Technology Workshop titled, “Transforming Oil and Gas Toward Digital Intelligence” in late April in Mangaf,•Kuwait.
The workshop attracted 138 attendees, and was held under the patron-age of Deputy CEO (Drilling and Technology) of Kuwait Oil Company (KOC), Nayef Al-Anezi, and chaired by Jamal Al-Humoud, manager of research and technology of KOC and cochaired by Maria Angela Capello, executive advisor in the North Kuwait Directorate of KOC. The ATW also included the SPE course “Digital Oil Field Building Blocks.”
The state-of-the-art as derived from DT journeys highlighted how decades-long operating companies have a real opportunity to transform their operating workflows to become energy digital leaders. The organizing committee included representatives of Emerson, Accenture, GOFSCO, Schlumberger, Halliburton, Weatherford, Baker Hughes, Microsoft, IBM, Deloitte, WorleyParsons, Huawei, KUFPEC, Kuwait University, and Australian College of Kuwait.•
Al-Anezi opened the event highlighting the importance of DT and technology adoption in aging reservoirs. Al-Humoud shared the step changes with which KOC entered the DT era, which included three digital oil fields pilot projects, applying the most advanced technologies to remotely monitor and control oil fields at West Kuwait, North Kuwait, and South and East Kuwait (Burgan fields). “We need to step up to embrace DT, to expedite our success, to optimize our costs and to enable the excellence in our studies and operations workflows,” he said. “Kuwait is pioneering in many fronts of DT, benefitting the oil sector of the state of Kuwait.”
The workshop included an executive panel and four technical sessions: Disruptive Technologies, Creating Value Though Integration, Embracing the Digital Future with Right Enablers, and The Next Digital Era.
Digital Transformation Discussion
Bart Cornelissen, managing partner of Deloitte Middle East Energy, Resources and Industrials, opened the executive panel, stating, “The oil and gas industry needs to re-imagine how work is conducted across the entire value chain for a successful digital revolution to take place.”
Experimental Evaluation of Wellbore Flow Models Applied to Worst-Case-Discharge Calculations for Oil Wells
Authors: Waltrich Paulo J. , Capovilla Matheus S. , Lee Woochan , de Sousa Pedro Cavalcanti , Zulqarnain Muhammad , Hughes Richard , Tyagi Mayank , Williams Wesley , Kam Seung , Archer Alexander , Singh Jagdeep , Nguyen Hai , Duhon John , Griffith Craig 
Published: July 2019

SummaryAn experimental and numerical investigation is presented in this study to verify the accuracy of wellbore flow models applied to worst–case–discharge (WCD) calculations. Wellbore flow models often used in WCD calculations show errors of more than 100% when compared to experimental data for large–diameter pipes. However, for low gas/liquid ratios, there is a reasonable agreement between experimental data and simulation results for all wellbore flow models tested, with errors lower than 10%. This study uses the comparison between experimental data and simulation results to provide guidance on how to improve these flow correlations and proposes how to use the flow models to obtain improved predictions on WCD calculations.
Prevalence and trends of Transfusion Transmissible Infections among blood donors in the State of Qatar, 2013-2017
Authors: Aabdien Mohamed , Selim Nagah , Himatt Sayed Mohamed , Hmissi Saloua , Merenkov Zeyd , AlKubaisi Noora , Elhassan Manar , Abdelmola Abdelatif , Khelfa Shadi , Farag Elmoubasher , Al-Romaihi Hamad E. , Al-Thani Mohamed , Derbala Moutaz , Kaabi Saad Al 
Published: July 2019

Abstract
Background: Millions of lives around the world are being saved annually through blood transfusion. However, blood transfusion is among the important vehicles for transmitting infections. The overall prevalence of Transfusion Transmissible Infections (TTIs) among blood donors differs around the world, reflecting the variation in the prevalence of these infections. The aim of this study is to assess the prevalence and trends of TTIs among blood donors in Qatar. Methods: This is a cross sectional study utilizing donation records of a five-year period from January 2013 to December 2017. Results for all screening and confirmatory tests for Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), Human T-Lymphotropic Virus-I/II (HTLV-I/II), Syphilis and Malaria were included in the study. Results: Among the 190,509 donations received at the donation center during the study period, about 91% donations were received from males and 9% from females. The overall positivity rate for all tests were 1.95, 2.18, 1.62, 1.81 and 1.85 for the years 2013 through 2017. The overall positivity rates for HBV, Syphilis and Malaria were 0.30, 0.43 and 0.20, respectively. Throughout the years, the positivity rates decreased for HBV, Syphilis and Malaria and increased for HCV and HTLV. Conclusion: The overall positivity rate of all tests combined for the TTIs demonstrated a gradual increasing trend from 2013 to 2017. The rates for HCV and HTLV showed increasing trends too. To support developing effective prevention and control strategies, further investigations are needed to improve the estimations of the prevalence of these infections.
Molecular marker assisted gene stacking for disease resistance and quality genes in the dwarf mutant of an elite wheat cultivar Xiaoyan22
Authors: zheng weijun , Li Song , Liu ZiHui , Zhou Qi , Feng Yanru , Chai ShouCheng 
Published: July 2019

Abstract
Development of wheat cultivars with multiple disease resistance and high quality are major objectives in modern wheat breeding programs. Gene stacking is an efficient approach to achieve this target. In this study, we pyramided yellow rust resistance gene (Yr26), powdery mildew resistance gene (ML91260) and high-molecular-weight glutenin subunits Dx5+Dy10 into the dwarf mutant of an elite wheat cultivar, Xiaoyan22. Six pyramided lines were obtained by molecular marker-assisted selection (MAS) and field evaluation of disease resistance. The desirable agronomic traits of pyramided lines, their identity with the original cultivar Xiaoyan22 except for plant height, tiller number and disease resistance, was achieved in this study. Meanwhile, the yield of pyramided lines is higher than Xiaoyan22 in the field test. In addition, analysis of flour quality indicated that the dough stability time of pyramided lines was longer than that of Xiaoyan22. These results demonstrate that it is feasible to improve multiple agronomic traits simultaneously by rational application of MAS.
Fine mapping of a Phytophthora-resistance locus RpsGZ in soybean using Genotyping-by-Sequencing
Authors: Jiang Bingzhi , Cheng Yanbo , Cai Zhandong , Li Mu , Jiang Ze , Ma Ruirui , Yuan Yeshan , Xia Qiuju , Nian Hai 
Published: July 2019

Abstract
Background

Phytophthora root rot (PRR), caused by Phytophthora sojae is one of the most important soil-borne diseases in many soybean-production regions in the world. Identification of resistant gene(s) and incorporating them into elite varieties are an effective way for breeding to prevent soybean from being harmed by this disease. A valuable mapping population of 228 F8:11 recombinant inbred lines (RILs) derived from a cross of resistant cultivar Guizao1 and susceptible cultivar BRSMG68 and a high-density genetic linkage map with an average distance of 0.81 centimorgan (cM) between adjacent bin markers in this population were used to map and explore the candidate genes.

Results

In this study, the PRR resistance in Guizao1 was controlled by a single Mendelian locus, and was fine mapped to a 460.702-kb genomic region on chromosome 3 that harbours 20 genes, including 8 disease resistance (R)-like genes in the reference Willliams 82 genome. These 8 candidate genes potentially involved in programmed cell death, cell death, apoptosis and ADP binding by adopting Gene Ontology (GO) enrichment analysis.

Conclusions

These findings of fine mapping of a novel Rps locus will serve as a basis for cloning, transferring of resistant genes and breeding of P. sojae resistant soybean cultivars through marker-assisted selection.