bluuebunny/crossref_metadata_2025_split huggingface dataset:
The non-linear electrical properties of silver/silver chloride electrodes in sodium chloride solution
Authors: Pabst Oliver , Anwar Abbas , Nieweglowski Adam Andrzej , Lindland Christian Rolid , Rahman Habibur , Siljedal Håvard , Thorkildsen Henning , Camara Ibrahim , Mirarkolaei Kosar Nozari , Massé Léa , Hoen Magnus Solvi , Mustafa Mohsin Noman , Berg Ole Johan , Kristiansen Petter André , Iguenad Ramzi , Torstensson Pedersen Robin Alexander , Waisi Serwa , Nielsen Trym Erik 
Published: January 2020

Abstract
An electrical measurement is non-linear when it is affected by the applied stimulus, i.e. when the measured phenomenon changes with amplitude. If pinched hysteresis loops can be observed in the voltage current representation, the underlying tissue can be classified as a memristor. Several biological memristors have been published, like human skin and apples. However, changes in the polarization impedance of electrodes may also cause pinched hysteresis loops. The question whether the reported biological memristors are real or whether the results just reflect changes in the polarization impedance arises. If the impedance of the measured object is close to or smaller than the polarization impedance of the used electrodes, the latter may dominate the measurement.
In this study, we investigated the non-linear electrical properties of silver/silver chloride electrodes in a sodium chloride solution that has a similar concentration as human sweat and compared these to results from human skin. First of all, we found that silver/silver chloride electrodes in sodium chloride solution can be classified as memristors. However, the currents obtained from the sodium chloride solution are much higher than the currents recorded from human skin and there is a qualitative difference in the pinched hysteresis loops in both cases. We can conclude that the non-linear electrical measurements with silver/silver chloride on human skin are actually dominated by the skin and we can confirm that the human skin memristor really exists.
Bioimpedance and NIR for non-invasive assessment of blood glucose
Authors: Andersen Jan-Hugo , Bjerke Olav , Blakaj Fatos , Flugsrud Vilde Moe , Jacobsen Fredrik Alstad , Jonsson Marius , Kosaka Eirik Nobuki , Langstrand Petter André , Martinsen Øyvind Grannes , Moen Alexander Stene , Moen Emily Qing Zang , Nystad Øyvind Knutsen , Olesen Eline , Qureshi Mahum , Risopatron Victor Jose Østrem , Ruud Simen Kristoffer , Stensø Nikolai , Winje Fredrik Lindseth , Winness Eirik Vetle , Abie Sisay , Joten Vegard Munkeby , Tronstad Christian , Elvebakk Ole , Martinsen Ørjan Grøttem 
Published: January 2020

Abstract
Sixteen volunteers each drank 700 ml sugar-containing soft drink during two successive periods and the blood sugar was measured at 10 min intervals together with electrical impedance spectroscopy and near infrared spectroscopy (NIR). A maximum correlation of 0.46 was found for the electrical measurements but no clear separation between low and high blood glucose levels were found in the NIR measurements. The latter was attributed to the experimental design where the NIR probe was removed from the skin between each measurement.
IDENTIFICATION OF SHORELINE CHANGES USING SENTINEL 2 IMAGERY DATA IN CANGGU COASTAL AREA
Authors: Astiti Sagung Putri Chandra , Osawa Takahiro , Nuarsa I Wayan 
Published: January 2020

Coastal areas in the Canggu and Seminyak areas located in Badung Regency, Bali Province are very attractive tourism. The development of tourism has an impact on coastal conditions. The coastal conditions analyzed are changes in coastline that occurred during 2015-2019 using remote sensing. The satellite image data used in the analysis is Sentinel 2A image data that can be accessed for free with a spatial resolution of 10 meters. Image data processing is divided into three stages, namely preprocessing, processing, and post processing using Sentinel Application Platform (SNAP) software. The preprocessing stage includes the resampling, masking, and subset areas. The processing stage includes digitizing the coastal area, digitizing accuracy analysis using the Support Vector Machine (SVM) method, and the post processing stage including correction of shoreline changes. Bands in image data used for detection of coastal areas are band 8 (NIR), 8A (narrow NIR), 11 (SWIR), and 12 (SWIR). Based on the results of the analysis of shoreline changes carried out during 2015-2019, it was found that the average shoreline changes were 1.42 m / year with erosion conditions in which the dominant wind direction originated from the southwest towards the northeast coast of the sea of ??Bali. The results of digitizing the coastal area using the Fine Gaussian SVM method with the greatest accuracy value is 87.8%.

Keywords: Shoreline Change, Remote Sensing, Sentinel 2A, SVM, Wind Direction
Dependence of Key Estimates From PTA on Flow Paths in Heterogeneous-Reservoir Systems
Authors: Rahman N M Anisur , Sarac Sukru 
Published: January 2020

Although parameter estimates from pressure-transient analysis (PTA) in homogeneous reservoir systems are well understood, such estimates from heterogeneous systems can be illusive if the flow paths of fluid movement in the reservoir are not captured well. This study brings in the perspectives of parameter estimations (for example, flow capacity, skin factor, and volume of the investigated region) based on the fluid-flow paths. The disseminated knowledge will help mitigate potential errors due to misunderstanding flow paths.
A number of idealized multi-layer models, and geological sector models have been built to generate pressure responses, and to understand the flow paths towards wells. Flow paths are controlled through horizontal and vertical permeability, and skin factors in perforated and open intervals in the wells. In each case, the flow capacity, skin factor and volume investigated are estimated from the generated pressure responses to show the dependence of estimated parameters on the flow paths in the reservoirs. We will also determine the shape and size of the region investigated with changes in flow paths during the numerical experiments.
In this paper, we highlight the pitfalls of interpreting pressure-transient data for layered, heterogeneous reservoir systems. The fluid-flow paths in complex reservoirs have direct impacts on the transient-pressure behavior, and on the estimates of key reservoir parameters. Natural paths that fluids flow along deep inside the reservoir can be modified in the reservoir models based on the engineer's input parameters. This can inadvertently result in modifications of the flow capacity, investigated volume, and reserves estimate. The outcomes of these numerical experiments with analytical and numerical models will certainly challenge the existing understanding of the reservoir flow capacity, and the widely-accepted radius of investigation concept. Conventionally, these parameters are explained without any regard for the flow paths in reservoirs. This paper shows that the flow paths indeed have direct impacts on the transient-pressure behaviors, and on the key parameters as flow capacity, skin factor and volume of investigated region in heterogeneous reservoir systems.
This study establishes a relationship between the parameter estimates and the flow paths in heterogeneous systems. Moreover, running into the pitfalls while building transient and simulation models for heterogeneous reservoir systems will be mitigated with the knowledge gained here.
End to End Data Security Challenges in Real-Time Drilling Data Environment - From Data Transfer to Analytics
Authors: Djamaluddin Basirudin , Ferianto Teguh , Akbar Habibie 
Published: January 2020

Data analytics using real-time data has brought many challenges, particularly in respect to security. From data generation to storage, each step in the life cycle has its own challenges. This paper identifies those challenges.
There are several security options that can utilized but for the purpose of this paper we have limited ourselves to the two most common mainstream techniques already used for protecting big data: encryption and access control. The goal is to ensure the confidentiality, integrity and availability (CIA) for phases of the data life cycle, from generation to storage.
This research offers a novel approach to the data security and of real-time data transfer and analytics. This paper presents metrics for each of the identified security challenges and aims to validate a real-time data transfer and analytics environment from the security perspective of encryption and access control.
Third Party Access TPA System in Malaysian Gas Market Reform
Authors: Zainudin Zainal Abidin , Lee Moi Hong , Abdul Rahim Nurul Farhana 
Published: January 2020

This paper presents the historical evolution of gas market reform in Malaysia. In the first part, it contains the development of gas infrastructures in the early days, introduction of regulated gas price in Malaysia, gas subsidy rationalization and price reforms execution, and the implementation of the Third Party Access (TPA) with enforcement of the Gas Supply (Amendment) Act 2016 (GSA 2016). The comparison and approach used for TPA to the infrastructures in Thailand, Indonesia and Singapore are also included.
In the second part, the paper summaries the TPA regulatory and legal framework that includes the development of TPA Codes and guidelines to promote the development of a competitive gas market, to ensure transparency, fair and nondiscriminatory practices in all transactions concerning the use of regasification terminals, transmission and distribution pipelines. The Codes are also implemented to prevent abuse of dominance and any potential anti-competitive conduct in addition to ensure a safe and reliable supply of gas to the customers. The paper further highlights on infrastructure readiness for the TPA implementation, reaction from market players to comply with GSA 2016, and the natural gas pricing mechanism under the TPA environment.
In the third part, the paper discusses current challenges by the market players to adapt to the new TPA environment, particularly on the infrastructure utilisations, pricing and commercial considerations and further supports required from the Government to continue fostering TPA to enable competition between market players, promote new business opportunities, encourage development of gas infrastructures and investments, and to continue the journey on transition to international market-based pricing. Concurrently, decisions and influences are required on the natural gas demand requirement with the support from environmental regulations, fiscal and tax incentives. As reference, the key success factors from European and North America gas market development are highlighted.
Finally, the paper reiterates the significances and the advantages of TPA implementation in Malaysia, to secure and manage energy supplies for Malaysia's growing domestic demand, as a platform for a healthy competition and to promote economic growth. This, in return, is expected to boost competition efficiency and supply electricity as well as ensuring long-term security of the country's gas supply.
HSE- Friendly Lubricants to Safeguard Environment and Enhance Operational Excellence
Authors: Amanullah Md , Ramasamy Jothibasu , Alouhali Raed 
Published: January 2020

The increasing use of ecofriendly chemicals and fluid additives for exploration and exploitation of oil and gas resources in onshore and offshore environments needs the development and/or identification of novel HSE-friendly chemicals and additives to improve operational excellence and safeguard the global environment. Hence, a suite of novel HSE friendly lubricants have been developed for exploration and exploitation of oil and gas resources without causing any damage and degradation to other marine and terrestrial resources. This paper describes the development, testing and evaluation of several HSE friendly lubricants that have been developed using waste cooking oil as the raw material. Physical and chemical processing of waste cooking oil available from the food and catering industry as a waste by- product have led to the development of several HSE-friendly lubricants to be in the forefront of best drilling practices. Due to the green nature of the products, they will have positive impact on the workers’ health, rig site safety, and the surrounding environment.Experimental results obtained by conducting industry standard lubricity tests indicate that the newly developed HSE-friendly lubricants have similar or better performance compared to the currently used equivalent lubricants and thus demonstrated their potential as the viable alternatives to equivalent commercial products. Due to the health, safety and environment-friendly nature of the newly developed lubricant products, they will ensure the exploration and exploitation of oil and gas resources with positive impact on the preservation of other marine and terrestrial resources and thus expected to safeguard the global environment and ecosystems. Due to the high potential of the lubricants to improve the interface lubrication of mating surfaces, they are expected to play an effective role in mitigating the torque and drag in deviated, horizontal, extended reach, multi-lateral and also vertical wells with high dog-leg severity while drilling, pulling and running the drill string into the wellbore.
Synergistic Flooding and Gravity Drainage by Steam and Gas
Authors: Liguo Zhong , Cheng Wang , Jianbin Liu , Youwei Jiang , Yongbin Wu 
Published: January 2020

Synergistic flooding and gravity drainage by steam and gas (SFGD) is an innovative alternative to SAGD and SAGP, considering its potential to enhance oil recovery and improve oil production rate. This research presents 3D physical experiments and of numerical simulations of SFGD in offshore heavy oil reservoir in Bohai Oilfield, China.
3D physical experiments of SAGP and synergistic flooding and gravity drainage by steam and gas (SFGD) are carrird out. The expanding process of the steam chamber and the production performance in different stages are compared between SAGP and SFGD. And the mechanism of SFGD are analyzed. Then, through detailed reservoir numerical simulations of SFGD, the reasonable deployment modes of injection-production wells are given, and injection-production parameters such as gas-water ratio, and steam injection rate are optimized.
3D physical experiments results show that synergistic flooding and gravity drainage by steam and gas (SFGD) can greatly shoren the production time and redcce the cumulative steam injection compared with SAGP. The ultimate oil recovery rate of SFGD is 59.15%, 6.02% higher than that of SAGP (53.13%). The EOR mechanisms of SFGD mainly includes the synergistic effect of flooding and gravity drainage, increasing the velocity of heat conduction and increasing the sweep efficiency. Numerical simulations results show that the injection wells should be located in the upper middle of the reservoir during the development process of SFGD, so as to achieve maximum ultimate oil recovery and high oil production rate. For LD heavy oil reservoir with a formation depth of 1000 m, a thickness of 25 m and a viscosity of 21500 mPa·s, the vertical distance between the injection well and the production well is about 15 m, and the reasonable gas-water ratio of SFGD is 100-150 in condition of injection temperature of 300°Cand production pressure of 2 MPa, and the optimal steam injection rate is 100-120 m3/d.
Synergistic flooding and gravity drainage by steam and gas (SFGD) is a new and more effective method to develop heavy oil reservoir. The effective combination of displacement and gravity drainage can greatly improve oil production rate and recovery efficiency.
Experimental Evaluation of a Novel and a Conventional LCM Pill using a Total Loss Simulating Test Bed
Authors: Amanullah Md , Rogers Stephen Wayne 
Published: January 2020

Lost circulation is one of major drilling challenges encountered while drilling. The industry uses many LCM products, loss control slurries, specially designed LCM blends, engineered LCM pills and squeezes, etc., to prevent or mitigate lost circulation encountered while drilling. However, the success rate of moderate and severe loss zone treatment using conventional LCM products, loss control slurries and pills is not encouraging, especially for severe and total loss control due to the technical limitations of conventional products, pills and slurries. Hence, there is a continuous need for identification and development of novel products, improved composition of loss control slurries, superior LCM pills, high performance LCM blends, effective and representative test methods, etc., for effective sealing and blocking of loss zones for trouble free and economic drilling operations. This paper provides a comparative evaluation of the sealing and blocking efficiency of a novel LCM pill and a conventional LCM pill used by the industry to combat total loss of circulation.Based on the compositional analyses of the conventional LCM pill used for total loss control, an improved LCM blend was designed by replacing some of the conventional additives by locally developed, better, LCM products to enhance the sealing and blocking efficiency of a poorly consolidated sand bed representing a total loss zone. Typical bentonite mud showed instantaneous loss of all mud within a very short time under 100 psi overbalance pressure and thus indicates that the test beds represented total loss zones. The conventional and the newly engineered LCM pills were tested using the test beds under 100 psi overbalance pressure for comparative evaluation of their sealing and blocking performance.Experimental data, visual observation and images taken while testing clearly demonstrated superior performance for the newly designed novel pill compared to the traditional LCM pill used in controlling total losses. Fluid level drop, deposited cake thickness, invasion depth and the slurry volume lost under 100 psi overbalance pressure indicate better performance for the newly designed LCM pill in sealing and blocking the 20/40 frac compared to the traditionally used pill. The conventional LCM pill contains predominantly imported LCM products. However, the newly designed LCM pill contains predominantly local products. Hence, the superior performance of the re-engineered LCM pill is directly related to the superior performance of the locally developed LCM products.
Coronary blockage of artery for Heart diagnosis with DT Artificial Intelligence Algorithm
Authors: Saikumar K  , Rajesh V  
Published: January 2020

Coronary blockage of an artery (CBA) is a fundamental problem cause of heart attacks. There are different techniques used to diagnosis this CBA as like other category of heart diseases. In this research, open heart surgery operation and quick diagnosis have been analyzed. This CBA diagnosis & operation requires clear images of heart i.e., CTA pictures. Fast and reliable detections are possible with professional image processing techniques (IMT) with the help of Artificial intelligence algorithms (AIA). By the help of Decision Tree (DT) based IMT and “AIA” is used to find the region of heart image CBA diagnosis with a concentration of determination. Total work contains two stages; 1st is pre-processing means image processing training 2nd is decision step, in this extraction, and statistical calculations are performed using the DT-AIA model. Implementation has been achieved and progressed by using 4.766% OV, OF by using 6.5%, OT by means of 2.5%, AI with the aid of 0.21% these are very good results.
Trophic ecology of the seagrass-inhabiting footballer demoiselle Chrysiptera annulata (Peters, 1855); comparison with three other reef-associated damselfishes
Authors: Lepoint Gilles , Michel Loïc N. , Parmentier Eric , Frédérich Bruno 
Published: January 2020

Many damselfishes (Pomacentridae) are herbivorous or omnivorous with an important contribution from different kinds of algae in their diet. They display different levels of territoriality and farming behavior, from almost non territorial to monoculture farmers. In addition, a few species inhabit seagrass meadows but, presently, none can be considered as seagrass-eating specialists. The footballer demoiselle, Chrysiptera annulata, is found in the seagrass meadows on the reef flat of the Great Reef of Toliara (Madagascar, Mozambique Channel). In the light of this unusual habitat for a pomacentrid, this study aimed to answer three questions: 1) What is the diet of C. annulata? 2) Do the resources supporting this diet include seagrass? 3) Does its trophic niche overlap those of other sympatric damselfishes (Pomacentrus trilineatus, Chrysiptera unimaculata and Plectroglyphidodon lacrymatus) living in close association with macrophytes or eating algae? Stomach content examination and stable isotope analysis showed that the footballer demoiselle is not a seagrass consumer but is an omnivorous/herbivorous species heavily relying on algal resources and small invertebrates. SIAR, a stable isotope mixing model, indicated it assimilated large amounts of turf algae, and various benthic or planktonic invertebrates in lower proportions. SIBER metrics revealed that the isotopic niche of the footballer demoiselle partly overlaps that of its congener, C. unimaculata, but not those of P. trilineatus and P. lacrymatus. Trophic strategies of C. annulata differed both from farming species such as P. lacrymatus and from less territorial herbivores such as P. trilineatus. Its seagrass meadow habitat on the Great Reef of Toliara allows the conquest of an unusual habitat for damselfishes and could limit competition with C. unimaculata, a species displaying the same territorial behavior and the same isotopic niche but living on the reef itself.
Ingesta de suplementos dietarios en estudiantes de la Universidad Iberoamericana
Authors: Chambi Jhonny , Diaz Gabriela , D'Oliveira Kathia , García Humberto , Karajallo Milagros , Legal Marlene , Quintana Oscar , Robledo Milena , Sánchez Kathia , Villalba Andrea 
Published: January 2020

Los avances de la ciencia de la nutrición en las últimas décadas revelan la importancia que tiene la alimentación adecuada sobre la promoción de la salud, el bienestar físico, emocional y el rendimiento deportivo. Además del factor genético, la alimentación influye sobre el rendimiento deportivo independientemente del nivel de competición del deportista, ya sea olímpico o recreativo. La nutrición deportiva es una rama especializada aplicada a personas que practican deportes de diversa intensidad.Es importante considerar el uso de suplementos en los deportistas basados en la evidencia de la medicina actual, de manera de obtener beneficios a partir de ellos, y así evitar riesgo de salud y dopaje.Los suplementos dietarios son productos que acompañan la dieta de las personas a través de la incorporación de determinados nutrientes, están destinados a personas sanas, por lo tanto, no deben confundirse con medicamentos, ni tampoco consumirse con la esperanza de curar o tratar alguna dolencia. Por lo que deberá consumirse en determinadas circunstancias, cuando no es posible llevar a cabo esa dieta o debido a un estado fisiológico particular que requiera un aporte extra de algún nutriente en su dieta