bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structural Interpretation by Applied Seismic Attribute in ‘I’ Field, Northwestern of Malay Basin.
Authors: Mokhtar S S S , Elsadaany M , Ridwan T K 
Published: April 2022

Abstract
The structural pattern within the Malay Basin is divided into fold and fault systems. Malay Basin is a complex rift composed of numerous extensional graben formed during the late Eocene-early Oligocene and the underwent thermal subsidence and sedimentation during the early Miocene. 3D seismic data and well data are used to map fault surface and stratigraphic reference horizons in the research field. The 3D surfaces and stratigraphy can thus be used to better understand and evaluate fold, fault interaction and structural trap. The quality of the data was improved by applying the seismic attribute (volume attribute) to intensify the geologic features. This paper is focusing on identified fold and faults by applying several seismic attributes on the specified parameter. The objective of this paper is to answer the question regarding how the fault is growing and its propagation. Thus, it is will help with the exploration to produce accurate structural maps in discovery oil and gas.
An approach to sustain micro-hydro power plants (MHPP) operation in the rural areas: a case study in South Dulamayo village of Gorontalo Regency, Indonesia
Authors: Jahja Muhammad , Arifin yayu Inriati , Fitra Syamsul Andi M. N. , Mobiliu Fajar Putra 
Published: April 2022

Abstract
Electrification is one of the driving factors for improving the quality of life of a country. Currently, Indonesia's electrification is borne solely by Perusahaan Listrik Negara (PLN), which isn’t sustainable and eco-friendly due to the fact that the main energy source is fossil fuel. Gorontalo, which is endowed with abundant renewable energy resources has installed many renewable energies power plant, but some of them have stopped operating due to the inability to maintain the operation. In South Dulamayo Village, in which the energy supply has already been dominated by PLN, the renewable energy power plant is still being used. The micro-hydro power plant project (MHPP) in South Dulamayo has operated for more than 7 years old, which currently struggles to maintain its sustainability. This study focused on capturing how the micro-hydro power plant in South Dulamayo maintains its sustainability. It is possible to keep The MHPP South Dulamayo working together (hybrid) with PLN for several customers, mainly the management by the intervention of UNG researchers.
Sequential search technique for obtaining the energy-efficient residential building in Gorontalo
Authors: Jahja Mohamad , Ftirah And Muhammad Nur , Gunawan Abdu 
Published: April 2022

Abstract
A sequential search technique is being used to optimize the design of the residential building in Gorontalo to minimize their life-cycle energy cost while improving their energy efficiency. Certain design features are included like air-conditioned, house orientation, window material, wall exterior finish, roof insulation, lighting fixtures, cooling system efficiencies, and photovoltaic while also considering the neighbor distance. The outcomes of the sequential search methodology are contrasted with those achieved through a more time-consuming approach to brute-force optimization. Alternatively, for selected locations in Gorontalo, the best design features for residential building is determined. By using specific measures resulted from the optimization technique can cost-effectively reduce the annual energy saving by 59%, while adding the photovoltaic as a measure, we can increase the annual energy use saving percentage up to 117% compared to the reference design in the residential building in Gorontalo.
Evaluation of site effects using horizontal-to-vertical spectral ratio in Kuala Pilah, Negeri Sembilan
Authors: Badrolhisham Siti Noor Shafiqah , Khalil Amin Esmail , Wai Wong Kian , Latiff Abdul Halim Abdul 
Published: April 2022

Abstract
The destruction experienced by an area due to tremors is commonly related to the size of magnitude and the distance of the source to the site where it is well known that larger magnitude earthquakes cause greater damage. Similarly, the closest area to the source will experience much devastating damage compared to the area further away. In addition to that, the local site effect also plays a significant role in the impact of earthquake hazards for specific sites despite the site being hundreds of kilometers away from the epicenter. This had been proven by the Michoacán earthquake in 1985 where the situation is similar to Peninsular Malaysia located approximately 400 km away from one of the most active plate tectonics in the world, the Sumatra Subduction Zone. This paper aims to evaluate the local site effects to improve the result of seismic hazard assessment by applying the Horizontal-to-Vertical Spectral Ratio (HVSR) method. The recorded microtremors data are processed to get two parameters that are closely related to the local site condition which is the resonant frequency and the amplification factor. The overall values extracted from the H/V curves are intermediate for both parameters. Overall, Kuala Pilah is divided into two zones; the western region associated with a thin, well-compacted soil layer and the eastern region associated with loose and unconsolidated deposits.
A case study on the application and workability of the crosshole seismic survey in a karstic area
Authors: Sithambaram Rubenee 
Published: April 2022

Abstract
Crosshole seismic tomography is currently one of the reliable methods used in identifying the seismic velocity patterns for the development in areas challenged by presence of karstic features due to dissolution of the underlying limestone bedrock formation. The crosshole seismic tomography which provides a persistent image of the borehole and its surroundings in the form of P-wave velocity, picks up in-depth information compared to other surface geophysical methods. A crosshole seismic survey which consists of 99 lines connecting a total of 48 boreholes were conducted at Jalan Cochrane for a proposed residential development to determine the subsurface geology of the area. The site was divided into four main towers, namely Tower A and B (East) and Tower A and B (West). Jalan Cochrane is underlain by the Kuala Lumpur Limestone formation. This survey was mainly conducted to identify the possible cavities and incompetent rocks which are fractured and infilled in the proposed area. The crosshole seismic survey tomography correlated well with the borehole information obtained. Several drop in velocity observed were concluded to be possible cavities in the bedrock. Data obtained in Tower A and B (West) are more uniform and have a uniform bedrock level compared to the data in Tower A and B (East) which has an undulating bedrock level as well as fractured rocks and infilled cavities. This paper presents the findings obtained from the crosshole seismic survey conducted at Jalan Cochrane which successfully mapped out the cavities and bedrock level.
Elastic properties and pore structure characterization of selected shales in the sungai Perlis beds, Terengganu, Peninsular Malaysia
Authors: Haq Izhar ul , Padmanabhan Eswaran , Khan Javed Akbar , Uthayakumar Tineswaran 
Published: April 2022

Abstract
Studied drill core of the Sungai Perlis Beds in the Terengganu State, Peninsular Malaysia, consists of a diverse suite of organic rich shale lithofacies at various subsurface depths. Lithofacies were delineated on the basis bedding thickness, mineralogy, and organic richness carried out by X-ray diffraction and (XRD) total organic content (TOC) analysis. Field-emission scanning electron microscopy (FE-SEM) analysis was carried out to identify the pore structure, range of pore sizes and mineral arrangement within each lithofacies unit Elastic geomechanical properties (Young’s modulus and Poisson’s ratio) were measured on core samples from each lithofacies unit using static and dynamic approaches. The identified lithofacies include moderate TOC massive argillaceous shale (MTOCMAS), high TOC massive argillaceous shale (HTOCMAS) and high TOC massive siliceous shale (HTOCMSS). FE-SEM analysis shows that pores in all the lithofacies are mostly intergranular, associated with phyllosilicate minerals, and ranges from <1 micrometer to approximately 8 micrometer. Static and dynamic elastic properties measurement shows that shale lithofacies having a high content of phyllosilicate minerals has a lower Young’s modulus and a high Poisson’s ratio value while lithofacies rich in brittle minerals has a higher Young’s modulus and a low Poisson’s ratio value. A good correlation exists between mineralogical brittleness index of the lithofacies and their plane strain modulus. The plane strain modulus is found higher in lithofacies having abundance of brittle minerals in the matrix suggesting that the high TOC massive siliceous shale (HTOCMSS) would preferably allow formation of dense hydraulic fractures, as observed in the CT scan analysis of triaxially fractured specimen, compared to argillaceous shale lithofacies.
Termus shale of central Pahang, Malaysia: kerogen typing by palynofacies analysis
Authors: Azmi Azyan Syahira , Ismail Mohd Suhaili , Talib Jasmi Ab 
Published: April 2022

Abstract
Palynofacies study has been done on selected samples fom the Late Jurassic – Early Cretaceous Termus Shale from Kuala Tahan, Jerantut-Jengka and Maran in Central Pahang to study its kerogen properties. Palynofacies study reveals distinct organic matter composition of different biological affinities from the samples where the organic matter composition were sorted into maceral groups and then by its distribution, to standard kerogen types. Three types of kerogens were interpreted: kerogen Type I, kerogen Type III and kerogen Type IV. Kerogen Type I and Type IV is interpreted in Kuala Tahan, Type III in Jerantut and kerogen Type III and Type IV are interpreted in the Maran area. The overall kerogen types correspond to different hydrocarbon potential ranging from high-low oil and gas potential.
Depositional environment and diagenesis of early Miocene Nyalau Formation, Sarawak, Malaysia
Authors: Shoukat Noureen , Siddiqui Numair Ahmed , Ismail M Suhaili B , Ali Syed Haroon 
Published: April 2022

Abstract
Diagenetic understandings tied to depositional sequences that developed over the past decades help to predict the reservoir quality in oil and gas exploration. Understanding the lithologic characteristics and diagenetic alterations is key to decipher the various complex controls on its porosity and permeability. This diagenetic heterogeneity is a product of a complex history of diagenetic modifications, however, there are not many studies addressing this problem. The results show that the exposed sections around Bintulu town comprise of massive sandstones intervals, laminated clays, and brackish-shales and lignite. Five main types of lithologies are identified in the stratigraphic sections: sandstones, shales, coal, siltstones, and mudstones. These rock types are further sub-divided into fifteen lithofacies based on sedimentary structures and other characteristics. Petrographic studies revealed that the sandstones are well-sorted quartz arenite, with fine to medium grained sand. The diagenetic processes recognized include compaction, dissolution and cementation. The early, middle, and late diagenetic stages are present in the lithostratigraphy. Bioturbation marks the start of post-depositional changes, and allowed rapid exchange of pore waters with overlying depositional water. Iron oxide occurred in early diagenesis rapidly after the sediments were buried. However, later grain dissolution provided the secondary porosity and permeability. Compaction rates were high in muddy sediments. Sandstone samples with high mud content have less diagenetic signatures. Later, quartz and calcite cement stabilizes the grains and decreases porosity generated by early dissolution. Middle stages of diagenesis involved the growth of chlorite perpendicular to quartz grains. The late diagenetic changes involved the growth of pyrite crystals associated with chemical composition of deep burial pore fluids. The cement types that have been observed in this formation include clay, calcite, quartz overgrowth and iron oxides whereas, the later phases destroyed the early generated porosity. The calcite cement in the early stage of diagenesis, though, resisted the compaction of sediments and aids to preserve the porosity. Dominant porosity is interparticle porosity that is present depositionally and later enhanced by secondary grain dissolution.
High-performance stretchable thermoelectric generator using serpentine interconnects encapsulated in an ultrasoft silicone sponge
Authors: Koshi Tomoya , Okawa Kenjiro , Amagai Yasutaka , Sakamoto Norihiko , Nomura Ken-ich , Yoshida Manabu 
Published: April 2022

Abstract
Stretchable thermoelectric generators (S-TEGs) have the potential to utilize waste heat from sources with complex and dynamic surfaces. However, their thermoelectric performances are still lower than those of conventional hard and rigid TEGs and are easily degraded by large or cyclic deformations due to electrical failure. An approach that improves both stretchability and thermoelectric performance is required. This study presents and explores the improvements enabled by an ultrasoft silicone sponge encapsulation for S-TEGs using silicone-encapsulated serpentine interconnects for the internal electrical wiring of the bismuth-telluride-based thermoelectric elements. The ultrasoft silicone sponge is characterized by a low Young’s modulus (0.01 MPa) and low thermal conductivity (0.08 W m−1 K−1) owing to its open-cell structure. We consider that the low Young’s modulus decreases the internal stress in the interconnects under deformation and that the low thermal conductivity increases the temperature differences in the thermoelectric elements under constant heat flow conditions. We fabricated S-TEGs with three different silicone encapsulations: hard and soft silicones, as used in previous studies, and an ultrasoft silicone sponge. We experimentally measured the elongation and cycle number to failure for stretchability evaluation as well as the open-circuit voltage and maximum power for thermoelectric performance evaluation. Thus, the S-TEG with the ultrasoft silicone sponge encapsulation showed both the highest stretchability (125% elongation to failure) and thermoelectric performance (1.80 μW cm−2 maximum power per unit area on a heater at 100 °C under natural air convection). Additionally, the S-TEG showed 153 μW cm−2 maximum power per unit area on a heater at 100 °C under water cooling, and comparisons with existing S-TEGs confirm that the proposed S-TEG achieves improved stretchability and relatively high output power.
Evaluation of QAOA based on the approximation ratio of individual samples
Authors: Larkin Jason , Jonsson Matías , Justice Daniel , Guerreschi Gian Giacomo 
Published: April 2022

Abstract
The quantum approximate optimization algorithm (QAOA) is a hybrid quantum–classical algorithm to solve binary-variable optimization problems. Due to the short circuit depth and its expected robustness to systematic errors it is a promising candidate likely to run on near-term quantum devices. We simulate the performance of QAOA applied to the Max-Cut problem and compare it with some of the best classical alternatives. When comparing solvers, their performance is characterized by the computational time taken to achieve a given quality of solution. Since QAOA is based on sampling, we utilize performance metrics based on the probability of observing a sample above a certain quality. In addition, we show that the QAOA performance varies significantly with the graph type. In particular for three-regular random graphs, QAOA performance shows improvement by up to two orders of magnitude compared to previous estimates, strongly reducing the performance gap with classical alternatives. This was possible by reducing the number of function evaluations per iteration and optimizing the variational parameters on small graph instances and transferring to large via training. Because QAOA’s performance guarantees are only known for limited applications and contexts, we utilize a framework for the search for quantum advantage which incorporates a large number of problem instances and all three classical solver modalities: exact, approximate, and heuristic.
The fundamental solution to \Box_{𝑏} on quadric manifolds – Part 1. General formulas
Authors: Boggess Albert , Raich Andrew 
Published: April 2022

This paper is the first of a three part series in which we explore geometric and analytic properties of the Kohn Laplacian and its inverse on general quadric submanifolds of

C

n

×

C

m

\mathbb {C}^n\times \mathbb {C}^m

. In this paper, we present a streamlined calculation for a general integral formula for the complex Green operator

N
N

and the projection onto the nullspace of

◻

b

\Box _b

. The main application of our formulas is the critical case of codimension two quadrics in

C

4

\mathbb {C}^4

where we discuss the known solvability and hypoellipticity criteria of Peloso and Ricci [J. Funct. Anal. 203 (2003), pp. 321–355] We also provide examples to show that our formulas yield explicit calculations in some well-known cases: the Heisenberg group and a Cartesian product of Heisenberg groups.
Safety and Efficacy of Polymethylmethacrylate-Collagen Gel Filler for Correction of the Pre-jowl Sulcus: A 24-month Prospective Study
Authors: Hevia Oscar 
Published: April 2022

AbstractBackgroundPolymethylmethacrylate (PMMA)-collagen gel is approved for the correction of nasolabial folds and severe atrophic, distensible facial acne scars on the cheek. However, fillers are often used off-label in clinical practice, necessitating additional study of safety and efficacy.ObjectivesTo determine the safety and efficacy of PMMA-collagen gel for the correction of lower face aging, specifically the pre-jowl sulcus.MethodsIn this prospective, single-center, 1-year study (N = 20) and additional 1-year extension (N = 10), 20 patients with a pretreatment score of 2, 3, or 4 on the 5-point Merz Aesthetic Scale for jawline at rest were eligible for treatment with PMMA-collagen gel. Efficacy was measured by blinded review using the jawline scale, Subject and Physician Global Aesthetic Improvement Scale (GAIS) and Subject Satisfaction scores, collected at weeks 4, 12, 26, 52, and 104.ResultsImprovement in jawline score was significant at all posttreatment time points up to 104 weeks (P &lt; 0.01). The percentage of patients with subject-reported GAIS ratings of “improved” or “much improved” was 79% at 12 weeks and ratings were maintained at 76% at 52 weeks and increased to 90% at week 104. At 52 and 104 weeks, 82% and 100% of patients, respectively, were at least “somewhat satisfied.” All adverse events were minor.ConclusionsPMMA-collagen gel is well tolerated and effective for durable correction of the pre-jowl sulcus and jawline.Level of Evidence: 4
Methylartist: tools for visualizing modified bases from nanopore sequence data
Authors: Cheetham Seth W , Kindlova Michaela , Ewing Adam D 
Published: April 2022

AbstractSummaryMethylartist is a consolidated suite of tools for processing, visualizing and analysing nanopore-derived modified base calls. All detectable methylation types (e.g. 5mCpG, 5hmC, 6mA) are supported, enabling integrated study of base pairs when modified naturally or as part of an experimental protocol.Availability and implementationMethylartist is implemented in Python and is installable via PyPI and bioconda. Source code and test data are available at https://github.com/adamewing/methylartist.Supplementary informationSupplementary data are available at Bioinformatics online.
Dismantling the Western Canon in Media Studies
Authors: Mohammed Wunpini Fatimata 
Published: April 2022

Abstract
Although there have been extensive discussions on decolonizing the field of media and communication(s), not much attention has been paid to the way that curricula reproduce colonialism, imperialism, and racism in the classroom. In this article, I draw on my experiences as an African graduate student in an American classroom to highlight the ways that systemic racism is replicated, reproduced and frames pedagogy. I argue that although many communication(s) scholars purport to theorize from a radical perspective, these politics are not represented in their pedagogy which means that students from marginalized communities are often erased in discussions on theory, research methods and even pedagogy. Not only are the epistemological experiences and realities of marginalized students erased, but the canon is further legitimized leading to the training of scholars and teachers who go on to (in)advertently uphold racism, White supremacy, colonialism, and imperialism in their research, teaching and service.
Squatting, pelvic morphology and a reconsideration of childbirth difficulties
Authors: Gorman John , Roberts Charlotte A , Newsham Sally , Bentley Gillian R 
Published: April 2022

Abstract Childbirth is commonly viewed as difficult in human females, encompassed by the ‘Obstetrical Dilemma’ (OD) described by early palaeoanthropologists as an evolved trade-off between a narrow pelvis necessitated by bipedalism and a large-brained fetal head. The OD has been challenged on several grounds. We add to these challenges by suggesting humans likely squatted regularly during routine tasks prior to the advent of farming societies and use of seats. We suggest that habitual squatting, together with taller stature and better nutrition of ancestral hunter-gatherers compared with later Neolithic and industrial counterparts, obviated an OD. Instead, difficulties with parturition may have arisen much later in our history, accompanying permanent settlements, poorer nutrition, greater infectious disease loads and negligible squatting in daily life. We discuss bioarchaeological and contemporary data that support these viewpoints, suggest ways in which this hypothesis might be tested further and consider its implications for obstetrical practice.Lay SummaryHuman childbirth is viewed as universally difficult. Evidence from physical therapies/engineering and studies of living and ancestral humans illustrates habitual squatting widens the pelvis and could improve childbirth outcomes. Obstetrical difficulties emerged late in prehistory accompanying settled agriculture, poorer nutrition and less squatting. Specific physical exercises could improve obstetrical practice.