bluuebunny/crossref_metadata_2025_split huggingface dataset:
Offshore Mahakam Architecture Optimization and Cost Reduction with Tapered String for Combined Gravel Pack and Tubingless Completion in One Section
Authors: Lutfi Andhika , Ray Henry Jimmy Hutahaean , Rangga Saputra , I Gede Suryana Saptawirawan , Arrofi Nurmida , Kresna Prabu Haryakusuma 
Published: October 2022

Abstract
Offshore Mahakam Field development has reached a mature level. With almost 400 wells occupy all platforms fully. Finding target for new wells with adequate reserves to pass the economic cut-off limit has been a challenging task. Multiple reservoirs for a re-entry (side-track) from existing well in Offshore Mahakam field become a base case by targeting both shallow reservoirs with sand control requirement and deeper reservoirs at consolidated sandstone.
Conventionally, side-track wells are drilled in two separated section to allow Gravel Pack completion inside 9-5/8" casing at the upper part for shallow reservoirs and then drill deeper section for tubingless completion with 4-1/2" liner. Completing these marginal wells using current conventional well architecture makes these wells uneconomical.
Answering the challenge and align to cost culture program, Pertamina Hulu Mahakam launched a collaborative project aiming for cost-effective wells against well reserves. Extended drilling envelope was introduced as the outcome of well architecture simplification process. Both shallow and deep reservoirs are drilled in one long open hole section then cased and cemented with single string tapered casing and tubing. Considering sand risk production, unconsolidated shallow gas reservoirs are accommodated by gravel pack completion in the upper part.
This new type of architecture has challenge related to hole stability for long open hole management and cementing strategy to ensure high quality cement sheath behind tapered string tapered casing and tubing. Then special equipment design and series of field test are performed prior to first application.
This paper illustrates development this new architecture and success application result in Mahakam Offshore Field.
Smart MIMO-OFDM Wireless Communication Frameworks for Subsurface Wireless Sensor
Authors: Katterbauer Klemens , Al Shehri Abdallah 
Published: October 2022

Abstract
Wireless communication in subsurface wells and reservoir has been a major challenge in ensuring robust data transmission, and reliable communication between the sensors. Challenges from the multiple reflection as well as other external factors, makes subsurface communication a unique challenge for modern communication algorithms. While multiple-Input, multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) communication has been extensively implemented in wireless communication for signal processing, unique challenges arise in subsurface reservoirs caused by unknown formation properties and fluid movements.
We present a new smart MIMO-OFDM algorithm for wireless communication in subsurface reservoirs. The new algorithm integrates both MIMO and OFDM into a deep learning framework. It optimizes the communication quality as well as reliability of the communication between the various subsurface wireless devices. The joint integration and smart adjustment leverages the power of both algorithms simultaneously, and allows significantly improved communication robustness between the wireless devices.
We tested the smart MIMO-OFDM on a synthetic carbonate reservoir formation with multiple wireless sensors and wireless appliances. Fracture Robots (FracBots, about 5 mm in size) technology will be used to sense key reservoir parameters (e.g., temperature, pressure, pH and other chemical parameters). The technology is comprised of a wireless microsensor network for mapping and monitoring fracture channels in conventional and unconventional reservoirs. The system establishes wireless network connectivity via magnetic induction (MI)-based communication, since it exhibits highly reliable and constant channel conditions with sufficiently communication range inside an oil reservoir environment. The results exhibited strong performance of the wireless communication, hence providing reliable and robust subsurface wireless communication.
The novel framework presents a vital component in enhancing subsurface wireless communication and achieve robust data transfer. The results outline the opportunity for wireless communication to become a critical component for subsurface communication.
Design, Operation and Maintenance of Subsea High Integrity Pressure Protection System and Subsea Automated Pig Launcher for Shallow Water Gas Condensate Field Development in Malaysia
Authors: Nasri Huang Farah Julieana , Hashim Muhammad Fikri , Omar Siti Aisyah 
Published: October 2022

Abstract

Objectives/Scope
This paper provides an overview of design, operation, and maintenance of Subsea High Integrity Pressure Protection System (HIPPS) and Subsea Automated Pig Launcher (SAPL) in a shallow water gas condensate field development offshore Sarawak, Malaysia. It will outline the key technical drivers for the subsea field architecture development and technology qualification programme that was undertaken to manage the risk and uncertainties with deployment and operation of new subsea technology.

Methods, Procedures, Process
The shallow water field hereby denotes as "Field K" is located approximately 200 km offshore Sarawak, Malaysia at water depth of around 80 meter. The field consists of two (2) subsea wells and is expected to deliver non-associated gas at rate of 200 MMscf/d to a Central Processing Platform (CPP), located approximately 5 km away from the wells. The field was initially planned to be developed using a wellhead platform but mid-way through the project, it was decided for Field K to be developed using Subsea Production System (SPS) with the following key requirements: -
Meet production target of 200 MMscf/d Achieve production availability of 96% Diverless philosophy throughout the field life Utilize the procured 24 inch Carbon Steel (CS) pipeline with design pressure of 83 barg Implement safety protection system that complies to Safety Integrity Level (SIL) 4 requirement to safeguard downstream facilities from the wells Closed in Tubing Head Pressure (CITHP) of 240 barg. Operational pigging to be carried out every 3 months and intelligent pigging every five (5) year for the 24 inch CS pipeline Any new technology to be implemented shall reach minimum Technology Readiness Level (TRL) 5 as per API 17N prior to its installation.

Results, Observations, Conclusions
A subsea technology screening and gap assessment was performed using API 17N and Company Internal Standards, and it was decided for the field to be developed using two 7 in. horizontal subsea tree, with two unit of Subsea HIPPS on manifold and retrievable Subsea Automated Pig Launcher at Pipeline End Termination (PLET). The field commenced its operation in December 2012 and was able to meet all the field key requirements identified. It was also the first subsea shallow water field that was designed, build, and operated by the Company. The paper will also highlight the key lessons learned and best practices during design, operation and maintenance that can be shared with other Operators and Industry.

Novel/Additive Information
The paper will outline the design, operational consideration, and necessary technology qualification program for new/modified subsea technology i.e., Subsea HIPPS and Subsea Automated Pig Launcher prior to deployment.
Probabilistic Estimation of Rigless Plug and Abandonment Campaign in Mahakam Offshore Fields
Authors: Sinaga Rahmat , Styward Boris , Yandra Garry Andrew 
Published: October 2022

Abstract
Under the low commodity prices, the operator of the marginal fields has been constantly initiating the ways to improve efficiency. Re-entry wells technique has been chosen as one of many to achieve the objective. Plug and abandonment (P&A) campaign has become massively conducted to prepare the wells for the re-entry. Moreover, a hydraulic workover unit (HWU) is utilized to support the drilling rigs in executing such projects in the last 3 (three) years.
Since the nature of the operation involves multiple stakeholders, careful planning is required to ensure that the company's objectives are well delivered. Therefore, estimating duration of single well P&A is more critical to gain the better perspective in the early stages.
This paper explains the probabilistic technique developed in forecasting the project's duration. Historical data are collected and multi-level statistical data analytics are performed to establish a tool for estimating the days, costs and finally providing valuable feedback for the initial planning.
Utilizing the probabilistic method in this case for the last 5 (five) wells of P&A campaign has showed significant approximation to the actual days. Therefore, the operator is confidence to continuously use this method for the planning.
Besides predicting the main scope of P&A works, the tool has accommodated the duration of the non-productive time (NPT) as well as the wait on weather (WOW) for each P&A well. Hence, the probabilistic method introduced in this paper can be beneficial not only for estimating but also enhancing the performance evaluation as the part of continuous improvement.
Effect of cellulose-nanoparticles (CNPs) and nanoclay (NC) reinforced starch based biocomposite films on thermal and mechanical properties
Authors: Olusanya John Olumide , Mohan T P , Kanny K 
Published: October 2022

Abstract

This paper explores the effect of nanoclay as improvement to the interfacial properties of starch bioplastic material filled with cellulose-nanoparticles (CNPs). At the initial, cornstarch bioplastics filled with CNPs were prepared. The CNPs were prepared through acid-hydrolysis process by using acid concentration to break the amorphous region of chopped fiber to produce nano-cellulose. Various CNPs concentration (0.5–2.5 wt.%) were dispersed in cornstarch biopolymer matrix. Cornstarch bioplastic reinforced with 1.5 wt.% of CNPs showed optimum improvement in thermal and mechanical properties. Furthermore, nanoclay (NC) of varying weight percentage (0.1–0.5 wt. %) were added to the optimum improved 1.5 wt.% CNP/cornstarch biopolymer material solution. Hence, cellulose-nanoparticles/nanoclay (CNPs/NC) reinforced cornstarch bioplastic films were formed by solution casting method.
Portuguese version of the HLS-EU-Q6 and HLS-EU-Q16 questionnaire: psychometric properties
Authors: Pedro Ana Rita , Raposo Beatriz , Luís Luís , Amaral Odete , Escoval Ana , Dias Sara Simões 
Published: October 2022

Abstract
Background

Health Literacy (HL) refers to the empowerment and competencies of individuals and the general population to navigate in the various areas of health care, to make decisions regarding their health in everyday life in an individual, family, or social context. Due to the dynamic process of health literacy, health professionals need to have a set of skills and real information that allow them to adapt to the changing landscape of people's literacy in order to empower them in the areas they need. To succeed, it is crucial to have the means to determine the health literacy level of the general population, in this case in the Portuguese context. Therefore, this study aims to measure the psychometric properties of the Portuguese version of HLS-EU-Q16 (HLS-EU-PT-Q16) and HLS-EU-Q6 (HLS-EU-PT-Q6) from the long form of HLS-EU-Q47 already validated for Portugal (HLS-EU-PT).

Methods

In order to analyse the results already obtained, a comparison was made with HLS-EU-PT index. Spearman correlation analysis was performed between the single items and scale scores. Cronbach’s alphas for all the indexes were calculated as a measure of internal consistency. For comparison associations between all the HL indexes - non-parametric test were calculated. The software used for the statistical analysis was SPSS (version 28.0).

Results

Cronbach’s alpha coefficient for HLS-EU-PT-Q16 internal consistency was 0.89 overall, and regarding HLS-EU-PT-Q6 the Cronbach’s alpha coefficient obtained was 0.777 overall. Indexes were not normally distributed, and Spearman correlation was computed. The results obtained in the correlation between G HL47 and G HL16 indexes (ρ=0.949, p<0.001) and the correlation between G HL6 and HLS-EU-PT-Q6 have a perfect correlation.

Conclusions

The HLS-EU-PT-Q16 and HLS-EU-PT-Q6 are concise and present adequate psychometric properties to measure health literacy level of the Portuguese population. However, the forms that show more similarities are the 47-item and the 16-item forms of the HLS-EU-PT.
Investigation of the Brain Carcinoma Based on Generalized Variation Coefficient Similarity Measures Using Complex q-Rung Orthopair Fuzzy Information
Authors: Ali Zeeshan , Mahmood Tahir , Ullah Kifayat , Zedam Lemnaouar , Pamucar Dragan , Ahmadi Mohsen 
Published: October 2022

Abstract
Background/ introduction
: To analyze the symptoms of brain cancer in the presence of the strategic decision-making method under the consideration of human cognitive process, and its basic idea is to divide a universal set into three pair-wise disjoint regions to cognitive information processing. As the ambiguity and complexity of the decision-making environment, cognitive information about alternatives given by decision-makers is ambiguous and contradictory. Brain Carcinoma is one of the massive dangerous diseases in the human body and certain intellectuals have been affected by them.
Methods
A bunch of intellectuals has generalized the concept of fuzzy set, but the methodology of complex q-rung orthopair fuzzy set (Cq-ROFS) has gotten a huge attraction from different scholars. In the presence of the above theory, this study aims to employ the principle of variation coefficient and generalized variation coefficient similarity measures for Cq-ROFSs and exemplify their properties. To analyze the supremacy and dominancy of the invented measures, we demonstrated their special cases and some results.
Results
In the consideration of the presented generalized variation coefficient similarity measures for complex q-rung orthopair fuzzy information, a medical diagnosis is illustrated in the presence of the invented measures is to diagnose the most dangerous sorts of brain carcinoma in the human body.
Conclusions
Various examples are illustrated in the consideration of the invented works for Cq-ROFS are to diagnose the advantages and sensitive analysis of the initiated measures to exemplify the rationality and power of the developed measures.
An In Vitro Study of the Thermal Effect of Holmium Laser Lithotripsy of Ureteral Stones
Authors: Taixun Li , Guangjing Shao , Huijuan Li , Suqin Guo , Wei Wang , Hongzhou Li , Mingchong. Sun 
Published: October 2022

Abstract
Objective To observe the local thermal effect of holmium laser in ureteral models.
Methods This study was conducted in July-August 2022 using a 3D printed kidney model (ureteral diameter: approximately 6 mm; length: approximately 20 cm). A clinically collected calcium oxalate monohydrate stone was polished into a 5 mm diameter sphere, placed under the ureteropelvic junction, and ligated with silk wire above the stone. The kidney model was placed in a water bath, and the temperature of the water bath was maintained at approximately 37°C to simulate the constant temperature of the human body. A fifth generation EMS pulse width tunable holmium laser was selected as the laser device. The laser fiber diameter was 200 μm. The thermometer was a multi-channel real-time thermometer with two temperature probes placed in the ureter. The distance between the probe and the fiber tip was maintained at 5 mm. Perfusion fluid: saline, temperature around 24°C; perfusion rate: 0, 10, 20, 30, 50 ml/min. We used a flexible ureteroscope with holmium laser fiber. The lithotripsy was performed by a physician. The holmium laser was continuously excited for 120 s. The temperature was measured and recorded once per second by an electronic thermometer. Each set of experiments was repeated three times.
Results The operating graph of the temperature around the holmium laser fiber versus the time was recorded for different operating modes, and the change in temperature around the fiber was recorded at each time point in the absence of perfusion. The temperature of 43°C was reached around the fiber after an average of 9.2±3.0 s of laser excitation; the higher the power, the shorter the time to reach 43°C. The operating curve of the temperature around the laser fiber versus the time was recorded at the perfusion rate of 20 ml/min for each time period, and it was found that the temperature around the fiber was ≤43°C at ≤20 W of fragmentation power. At a perfusion flow rate of 50 ml/min, the holmium laser began to excite and reached a plateau between approximately 20 and 30 s. The plateau temperature powdered group > fragmentation group (p < 0.01).
Conclusion During ureteroscopic holmium laser lithotripsy, holmium laser excitation will produce a local thermal effect. Keeping the lithotripsy power ≤ 20 W within the perfusion flow rate ≥ 20 ml/min can reduce the local high temperatures caused by the thermal effect of the holmium laser and reduce any thermal damage, while the local thermal effect of low-energy high-frequency powdering mode is the highest and the local thermal effect of high-energy low-frequency powdering mode is the lowest.
ABHD6 inhibition alleviates memory deficits in an Alzheimer's disease mouse model
Authors: Xue Zhiwei , Ye Lei , Mao Chenglu , Lan Zhen , Ge Jianwei , Zhou Xinxin , Bao Xinyu , Yu Linjie , Xu Yun , Zhu Xiaolei 
Published: October 2022

Abstract
Synaptic dysfunction plays a crucial role in the pathogenesis of Alzheimer's disease (AD). α/β-hydrolase domain-containing 6 (ABHD6) plays a critical role in the regulation of synaptic plasticity, and ABHD6 inhibition has shown potential therapeutic value in several neurological disorders. However, the role of ABHD6 in AD has not been fully defined. In this study, we demonstrated that Adeno-associated virus (AAV)-mediated ABHD6 inhibition in hippocampal neurons attenuated synaptic dysfunction and memory impairment of APPswPS1dE9 (APP/PS1) mice, while it didn't affect the amyloid-beta (Aβ) levels and neuroinflammtion in the brains. In addition, intraperitoneal injection of wwl70, a specific inhibitor of ABHD6, improved the synaptic plasticity and memory function in APP/PS1 mice. Furthermore, wwl70 significantly decreased the Aβ levels and neuroinflammtion in the hippocampus of AD mice, which indicated that wwl70 might exert the neuropreotctive effects not only by neuronal ABHD6 inhibition. In conclusion, for the first time our data has shown that ABHD6 inhibition might be a promising strategy for AD treatment, and wwl70 is a potential candidate for AD drug development pipeline.
The bridge between genotype associations and innovations for Leptocybe invasa resistance in Eucalyptus: a meta-analysis
Authors: Calazans Crislaine Costa , Souza Juliana Lopes , Nunes Valdinete Vieira , Silva-Mann Renata 
Published: October 2022

Abstract
I. Background:
Plant phenotyping has been a bottleneck for selecting insect-resistant plants in breeding programs. Our objectives were to: use text-mining tools to investigate state of the art about Leptocybe invasa in Eucalyptus; identify associated molecular interactions involving genes as a candidate and their impact and associated metabolites pathways and determine how products are currently used to control this insect as patents.
II. Methods and Results:
The literature survey was explored by title, abstract, and keywords of scientific articles, a database of genes and protein sequences, and patents. Nucleotide and protein sequences were mined in public banks. In the literature, we searched for homology to known genes or predicted proteins with sequences described in Eucalyptus sp. To obtain a broad set of studies, we accessed literature data of the last 20 years conducted with combinations of search terms “Leptocybe invasa” OR “eucalyptus gall wasp” AND “control”. Patents were prospected and analyzed using Orbit Intelligence patent research software
III. Conclusions:
Succinct interpretation of results as well as significance of findings. Statement There are perspectives to access the genotype resistance; furthermore, it is critical managing the evaluable information as state of the art to overcome the damages of L. invasa beyond the genotype selection. The target genes found in this research can serve as a basis for further functional characterizations of Eucalyptus genes possibly related to response expression to L. invasa.
Investigating sources of non-response bias in a population-based seroprevalence study of vaccine- preventable diseases in The Netherlands
Authors: Postema Abigail E. A. S. , Ferreira José A. , Klis Fiona van der , de Melker Hester , Mollema Liesbeth 
Published: October 2022

Abstract

Background PIENTER 3 (P3) is the third nationwide serological survey in the Netherlands, conducted in 2016/17. The overall response rate was 13.9%, following a decreasing trend in response compared to the previous two PIENTER studies (1995/1996 and 2006/2007). During P3 a non-response survey was used to investigate non-response bias. We assess P3 representativeness and potential sources of non-response bias, and trends in decreasing participation rates across all PIENTER studies. Methods P3 invitees were classified into survey response types (RTs): Full Participants (FP), Questionnaire Only (QO), Non-Response Questionnaire (NRQ) and Absolute Non-Responders (ANR). FP demographic and health indicator data were compared with Dutch national statistics, and then the RTs were compared to each other. Random Forest algorithms were used to predict an invitee’s RT. Finally, FPs from all three PIENTERs were compared to investigate the profile of national survey participants through time. Results P3 FPs were in general healthier, younger and higher educated than the Dutch population. Random forest was not able to differentiate between FPs and ANRs, but when predicting FPs from NRQs we found evidence of healthy-responder bias. Participants of the three PIENTERs were found to be similar, but we found that, in line with national trends, P3 participants were less inclined to vaccinate than previous cohorts. Discussion As vaccination coverage is high in the Netherlands, P3 remains a powerful tool to monitor population-level protection against vaccine preventable diseases (VPDs). Participants of all three PIENTERS do not differ and there can be compared through time. However, future PIENTER studies should continue to focus on improving recruitment from under-represented groups but consider alternative survey modes to improve overall response.