bluuebunny/crossref_metadata_2025_split huggingface dataset:
Grinding of high temperature alloy nut tap in low frequency torsional vibration tapping
Authors: Han Fengqi , Li Jianchao , Wang Lijia , Wang Hongguang , Liu Jie 
Published: December 2024

Abstract
During the tapping process of the high temperature alloy GHI698 nut, the tap is easy to fail due to large pieces of damage, and the service life is very low. Combined with the finite element cutting simulation, it is considered that the early damage of the tap in the low frequency torsional vibration tapping is caused by the excessive impact force on the cutter teeth. Grinding the tap into a smaller negative rake angle can effectively improve the stress distribution of the cutter teeth. It is proved by experiments that the failure type of the nut tap after grinding is converted from early damage to normal wear, and the service life is obviously improved. Within a certain parameter range, when low frequency torsional vibration uses a smaller spindle speed and cutting angle, and a larger retraction angle, the tap can achieve a higher service life.
Spectral analysis of metamaterials in curved manifolds
Authors: Faikl Tomáš 
Published: December 2024

Abstract
Negative-index metamaterials possess a negative refractive index and thus present an interesting substance for designing uncommon optical effects such as invisibility cloaking. This paper deals with operators encountered in an operator-theoretic description of metamaterials. First, we introduce an indefinite Laplacian and consider it on a compact tubular neighbourhood in constantly curved compact two-dimensional Riemannian ambient manifolds, with Euclidean rectangle in

R

2

being present as a special case. As this operator is not semi-bounded, standard form-theoretic methods cannot be applied. We show that this operator is (essentially) self-adjoint via separation of variables and find its spectral characteristics. We also provide a new method for obtaining alternative definition of the self-adjoint operator in non-critical case via a generalized form representation theorem. The main motivation is existence of essential spectrum in bounded domains.
Evaluation of the cooling performance of various heat-reflective cool pavement coatings for Urban Heat Island mitigation
Authors: Alhaqi Daffa Hilmi , Nazalanzilni Achmad , Rahman Taqia 
Published: December 2024

Abstract
This paper investigates the optimization of heat-reflective cool pavement coatings to address the critical Urban Heat Island (UHI) effect, which significantly increases energy consumption for urban cooling and adversely impacts thermal comfort and public health. With pavements constituting about 30% of urban surfaces, their role in amplifying UHI effects underscores the need for innovative solutions. This study evaluated the cooling effect of heat reflective coatings (HRC) using water-based and oil-based binders, such as Acrylic Emulsions and Epoxy Resins, with the addition of functional fillers and pigments, including Titanium oxide, Iron oxide, and Silicon oxide. The results showed that both waterborne (acrylic emulsion) and oil-based (epoxy resin) HRC significantly reduced pavement surface temperatures, achieving maximum cooling effects of up to 20°C. During nighttime cooling simulations, these coatings maintained lower average temperatures, demonstrating their effectiveness both day and night. Waterborne HRC exhibited a rougher surface texture, resulting in higher skid resistance compared to the smoother epoxy resin HRC, which poses a potential risk for skid resistance and requires anti-skid additives. However, waterborne HRC showed signs of cracking after 24 hours of drying, indicating lower durability. Incorporating SiO2 maintained the cooling performance of epoxy resin HRCs while reducing glossiness, enhancing safety and efficacy. Conversely, SiO2 reduced the cooling effect in acrylic emulsion HRCs, suggesting that their natural matte appearance is already optimal. While yellow and white HRCs have high cooling effects, they may not be suitable for all applications due to potential glare and aesthetic mismatches, particularly in architectural and heritage settings.
Psycho-Chemical Characteristic of Groundwater Quality in Hard Rock and Alluvium Aquifers in Pangkalpinang City, Bangka Belitung Islands Province
Authors: Yulita R , Putra D P E , Baskoro W A 
Published: December 2024

Abstract
The people of Pangkalpinang City generally use water sourced from groundwater and from the reservoirs of former tin mining excavations commonly called “Kolong.” However, the quality of the Kolong water used has a pH that tends to be acidic, while the groundwater quality has yet to be detected. In line with these problems, this study aims to analyze groundwater quality based on groundwater’s Psycho-Chemical properties associated with the lithology distribution in the study location. There are 3 rock units in the research location: the phyllite rock unit, classified as hard rock, sandstone unit, and alluvium unit. The results obtained in the comparison of Psycho-Chemical parameters of groundwater based on lithology spread over 98 observation wells are in the phyllite rock unit; there are 9 observation wells with pH 4.67-6.26; EC 72-291 μS/cm; and TDS 38-142 mg/L. The sandstone rock unit has 57 observation wells with pH 4.36-8.41, EC 36-5394 μS/cm, and TDS 17-2732 mg/L. The alluvium unit has 32 observation wells with pH 4.68-8.54, EC 32-12333 μS/cm, and TDS 16-6167 mg/L. A comparison of groundwater quality characteristics based on the physico-chemical properties of water with the distribution of lithology illustrates that the quality of groundwater in the phyllite rock unit has a low pH (acidic), so it must get treatment first to be suitable for use by the community as clean water. At the same time, the results of the analysis of groundwater Psycho-Chemical parameters for EC and TDS values in sandstone and alluvium units are in the Slightly Brackish and Brackish categories, where this can be caused by several factors, such as the possibility of contamination by salt water (geogenic) or contamination by human activities (anthropogenic) so that further research needs to be done to find out the source of groundwater pollution at the research site.
Identification of potential groundwater zone for urban development
Authors: Joleha  , Handayani Yohanna Lilis , Sutikno Sigit , Yusa Muhamad 
Published: December 2024

Abstract
An accurate groundwater level prediction approach is needed for more efficient and ideal planning when using groundwater resources, especially during dry and low water periods. Groundwater levels are highly nonlinear and complex due to the influence of topography, meteorology, geomorphology, hydrology, geology, and human activities. A strategy and in-depth knowledge of groundwater potential availability are prerequisites for planned sustainable urban development. This study used a Geographic Information System (GIS) and Analytical Hierarchy Process (AHP). Four thematic layers were used in GIS to identify groundwater potential zones: slope gradient, rainfall, soil type, and land use/cover. Using weighted analysis in ArcGIS software, all thematic layers were combined to provide a combined groundwater potential map of the study area. Groundwater potential zones were created using ArcGIS 10.8 spatial analysis tools on an overlay of all thematic maps. Groundwater conditions were used to determine the GIS analysis criteria, and each information layer was ranked and weighted accordingly. Finally, groundwater recharge zones were selected and classified into very high, high, moderate, low, and very low based on the cumulative weighted values. The results of the study showed that around 0.2% (4.7 ha) of the area was in the deficient category, 45.8% (1,392 ha) was in the high category, 28.4% (463 ha) was in the medium category, 1.7% (52 ha) was in the low category, and 23.9% (725 ha) was in the very high category.
Implementation of digital twin technology for bridge inspection using terrestrial laser scanner
Authors: Murjani Caki Madhya , Pratama Rivaldi , Astor Yackob , Wusqo Urwatul , Widyaningsih Yulia , Muflih Moch. Imam , Pratama Dandi Haniif , Nabesima Yasuki 
Published: December 2024

Abstract
This research aims to determine the type, dimensions (extent and depth), and level of the damage, as well as assess the remaining capacity of the bridge. The bridge, constructed in 1984, underwent Terrestrial Laser Scanning (TLS) for data acquisition, resulting in a precise 3D model. The model is used for bridge inspection, creating as-built drawings, and providing recommendations for bridge repair and maintenance. The inspection conducted is a detailed inspection following Guideline No.01/P/BM/2022 concerning Bridge Inspection. Additionally, the bridge’s remaining capacity value was determined using the rating factor method based on Guideline No. 024/BM/2011 on Determining the Remaining Capacity Value of the Bridge. The inspection reveals the bridge is moderately damaged, requiring monitoring or maintenance. The rating factor values for moment and shear at the edge section are 0.71 and 6.33. Meanwhile, at the mid-section, they are 0.44 and 3.39, which means that the bridge is unsafe against moment due to the maximum live load. The floor slab, with moment and shear rating factors of 0.37 and 0.84, is unsafe against both dead load and traffic load-induced moments and shear. TLS greatly assists the detailed inspection process of the bridge, facilitating inspectors to see the bridge’s visual condition that cannot be observed manually.
Innovation of gypsum board and corn cob waste on bricks for tests of compressive strength, water absorption, and temperature reduction
Authors: Fauziyah Shifa , Susanti Riza , Neinawati Lilya Erviyana , Dewantari Luthfia 
Published: December 2024

Abstract
The demand for construction materials, particularly brick, is a consequence of the increase in housing construction. Sand and cement are the primary materials used to make bricks. The rapid development of innovation in construction materials has resulted in the creating of environmentally friendly, cheap, and technical specifications-oriented materials. Thus, creating an eco-friendly material that can substitute sand, specifically corn cob, is vital. Through innovation, bricks can be made less expensive by substituting gypsum board waste material for cement. Using gypsum board, and corn cob waste as brick-making materials must meet SNI 03-0349-1989 specifications for compressive strength and water absorption. The heat absorption capacity of the innovation bricks will also be evaluated. The study applied experimental research, partially substituting gypsum board with corn cob waste. The variations tested were as follows: A (0% gypsum board and 0% corn cob), B (30% gypsum board and 10% corn cob), and C (35% gypsum board and 5% corn cob), with assessments conducted at 7 and 14 days. The findings revealed that the highest compressive strength was achieved in variation C (35% gypsum board and 5% corn cob), measuring 91.89 kg/cm2. Additionally, variation C exhibited the most favorable water absorption rate of 3.10%, while variation B (30% gypsum board and 10% corn cob) demonstrated the most effective temperature reduction of 5.17°C.
Performance of Road Pavement Using AC-WC Mixture with Glycerin Oleochemical Waste Substitution Material Based on Marshall Testing and IRI Value.
Authors: Wardana Edward , Sihombing Atmy Verani Rouly 
Published: December 2024

Abstract
By the end of 2021, PT Pertamina was the sole oil asphalt producer in Indonesia, with a production capacity of 350,000 tons per year. However, domestic asphalt demand exceeds this supply, leading to 75% of asphalt still being imported. To reduce imports, Glycerin Pitch (GP), a waste product from the oleochemical industry and classified as a Toxic and Hazardous Substance (B3), can be used as a substitute for asphalt. Indonesia produces 650,000 tons of glycerol annually, with 3% resulting in GP. Tests on GP with inorganic content <10% and >10% were conducted. Rheology tests showed penetration values of 62.83 and 60.4 (0.1 mm), softening points of 60.5°C and 56.5°C, kinematic viscosities of 1197 cSt and 903 cSt, ductility >100 cm for both, and specific gravities of 1.074 g/cc and 1.054 g/cc. Aggregate tests revealed an abrasion value of 16.71%, flat and elongated particles at 7.52% (split) and 8.49% (screen), and material passing sieve No. 200 at 0.87% (coarse) and 9.49% (fine). The asphalt mixture design showed an aggregate gradation of 12% split, 44% screen, 41% stone dust, and 3% filler. The optimum GP content was 27% for GP1 and 14.2% for GP2, with an optimum asphalt content of 6%. Mixing and compaction temperatures were 130°C and 150°C for ACWC+GP1 and 150°C for ACWC+GP2. The Marshall Quotient was 211 Kg/mm for ACWC+GP1 and 316 Kg/mm for ACWC+GP2. Field tests on two segments (Pen 60/70 + GP1 and GP2) showed an International Roughness Index (IRI) of 3.21 and 2.89, respectively, classified as good. These findings suggest that GP is a viable substitute in asphalt mixtures, reducing import dependence while efficiently utilizing oleochemical waste.
Self-supply as a safely managed water service: comparative analysis and predictors of water service outcomes in rural Nepal
Authors: Foster Tim , Lala Sunetra , Budhathoki Ratan , Kohlitz Jeremy 
Published: December 2024

Abstract
Self-supply is ubiquitous in rural areas of South Asia, including in Nepal, where more than a third of the country’s population obtains their drinking water from private tubewells. However, there has been little research into the service levels delivered by self-supply or its performance relative to public water services. Drawing on data from 1289 tubewells in Sarlahi District in the Terai region of Nepal, this study compared the performance of private and community tubewells in terms of water quality and availability and identified factors that predict service levels. Compared with community tubewells, private tubewells had significantly higher odds of providing water that was free from contamination and available in sufficient quantities when needed (OR 2.12, 95% CI 1.19–3.77, p = 0.011). However, inequities were evident among private tubewell users, with marginalized or lower-caste groups having significantly lower odds of accessing a safely managed water service (OR 0.68, 95% CI 0.54–0.85, p < 0.001). Among private tubewell users, shallower wells and open defecation were significantly associated with the presence of E. coli. The results show that self-supply is capable of providing a safely managed water service and can contribute to efforts to achieve Sustainable Development Goal 6. However, targeted support should be directed towards disadvantaged households to safeguard water quality and strengthen service reliability. In particular, programmes that support the installation of deeper tubewells, prevent open defecation and promote household water treatment may bring water quality benefits in areas where self-supply is practised.
Disproportionate impacts of building materials production facilities on neighboring communities
Authors: Kim Alyson , Chaboya Gavin , Kwon Helena , Miller Sabbie A 
Published: December 2024

Abstract
The construction and building materials (CBMs) production industries, such as cement, steel, and plastics that are responsible for a substantial share of global CO2 emissions, face increasing pressure to decarbonize. Recent legislative initiatives like the United States (US) federal Buy Clean Initiative and the World Green Building Council’s decarbonization plan for Europe highlight the urgency to reduce emissions during CBM production stages. However, there remains a gap in addressing the localized environmental and social impacts of these industries as well as a necessary understanding of how decarbonization efforts may change local impacts. This study introduces a framework for quantifying the disproportionate impacts (I
d) of 12 CBM production facility categories on communities of color and low-income demographics across the US. Using geographical and environmental data from the 2017 US National Emissions Inventory (NEI), we assess these impacts at four spatial scales: census tract, county, state, and national. Results show that across all scales, many CBM production facilities impose disproportionate impacts. The geographical disproportionate impact (I
G,d) shows the greatest burdens at the broadest spatial scales, whereas the environmental disproportionate impact (I
E,d) indicates highest burdens at more localized levels. Based on this spatial understanding, we provide methods that can be implemented to support community engagement and mitigate damages to populations neighboring industrial materials manufacturing. These findings offer valuable insights into the relationship between facility locations, emissions, and demographic groups, providing a basis for more targeted environmental justice policies aimed at mitigating these disproportionate impacts.
Disappearing Chairs and Participatory Dances
Authors: Ross Janice 
Published: December 2024

Abstract
This chapter uses the chair as a lens to view Anna’s activation of the spectator in her dances like Apartment 6 and The Five-Legged Stool and Larry’s animating of physical engagement from visitors to his urban landscapes. From the uncomfortable JB Blunk “throne” to the butterfly and Hardoy chairs featured in the Halprin home, places for extended, sedentary repose are rare to nonexistent on the Halprin property and in their works. Beginning in the 1960s, the spectator in Anna’s dances was recast as an attentive witness, actively receiving, and responding to, performers’ intimate disclosures. Her emphasis was on supporting and participating by being visually attentive rather maintaining a traditional aesthetic distance. These dances are read as fascinating parallels to Larry’s increasingly collaborative design process and his engagement of spectators as participants in his urban design projects: Ghirardelli Square, Freeway Park, and Levi’s Plaza.
Heat strain in road construction workers during the summer in New Mexico: a preliminary study
Authors: Specht Jonathan W , Garcia Serena , Wegman David H , Glaser Jason , Schlader Zachary J , Amorim Fabiano T 
Published: December 2024

Abstract
In the summer season, road construction workers perform physically demanding tasks outdoors, placing them at greater risk for exertional heat illness conditions. Assessing core temperature (Tcore) is critical as it serves as a key indicator of heat strain and helps to estimate the risk of heat-related illness. Despite the increased risk of hyperthermia, previous research has not assessed Tcore in road construction workers in the United States during summer work.
Purpose: To report heat strain and environmental heat stress in a pilot study of road construction workers during work in the summer.
Methods: Seven male road construction workers in New Mexico were observed performing physically demanding work during a summer work shift. Environmental heat stress (heat index [HI], dry/wet bulb temperature, and relative humidity), Tcore, and skin temperature (Tskin) were measured continuously at a single job site throughout the workday. Hydration was assessed pre- and post-shift via measurements of urine specific gravity (USG) and changes in body weight.
Results: The peak HI recorded throughout the workday was 34.1 °C, corresponding to a “warning” heat risk level according to the Occupational Safety and Health Administration Heat Safety Tool App. Two of seven (29%) workers reached a peak Tcore of greater than 38.0 °C, and 4 (57%) began the work shift dehydrated, indicated by a USG &gt;1.020.
Conclusions: Findings from this pilot study suggest that road construction workers may begin their shifts dehydrated and some experience moderate hyperthermia while performing physically demanding work in hot environmental conditions.
Secretory expression in Bacillus subtilis, purification, and characterization of a persistent protein-degrading enzyme from Nocardiopsis sp. TOA-1
Authors: Takano Aoto , Yano Mamiko , Nakamura Tomoka , Takano Kazufumi , Tanaka Shun-ichi 
Published: December 2024

Abstract
Keratinase from Nocardiopsis sp. TOA-1 (NAPase) holds significant potential for industrial and medical applications. Here, we developed a heterologous secretory expression system for NAPase in Bacillus subtilis. The recombinant enzyme exhibited catalytic properties comparable to the native enzyme, demonstrating its suitability for further protein engineering. This work provides a foundation for enhancing NAPase activity and stability, expediting its biotechnological applications.
The lion(ess?), the weeping, and the warrior trope: images of animals mourning in the Iliad, the Epic of Gilgameš, and beyond
Authors: Barber Joseph 
Published: December 2024

ABSTRACT
The last few decades have seen a surge in research into the possible connections between early Greek poetry and the literature and mythologies of the Ancient Near East. This article re-examines Iliad 18.318–23, which many scholars have regarded as directly and deliberately alluding to a similar section of the Babylonian Epic of Gilgameš (SBV VIII 59–62). In both passages, Akhilleus and Gilgameš are said to mourn for Patroklos and Enkidu like a lioness mourning for her cubs. It will be argued that we should not regard these passages as evidence for a direct connection. By considering other strands of similar imagery in the Iliad, I will show that the presence of this simile in the Greek epic is not best explained as the result of external influence. This will be corroborated by an examination of occurrences of similar imagery in other Near Eastern texts from Mesopotamia, Ugarit, and the Hebrew Bible. Reflecting on the methodological difficulties of positing direct allusion between Greek and Near Eastern literary texts, this article will suggest instead that this simile of animal mourning is a stock feature of a broader shared Eastern Mediterranean poetic tradition with many surviving examples.
IMPACT: interpretable microbial phenotype analysis via microbial characteristic traits
Authors: Mechtersheimer Daniel , Ding Wenze , Xu Xiangnan , Kim Sanghyun , Sue Carolyn , Cao Yue , Yang Jean 
Published: December 2024

Abstract

Motivation
The human gut microbiome, consisting of trillions of bacteria, significantly impacts health and disease. High-throughput profiling through the advancement of modern technology provides the potential to enhance our understanding of the link between the microbiome and complex disease outcomes. However, there remains an open challenge where current microbiome models lack interpretability of microbial features, limiting a deeper understanding of the role of the gut microbiome in disease. To address this, we present a framework that combines a feature engineering step to transform tabular abundance data to image format using functional microbial annotation databases, with a residual spatial attention transformer block architecture for phenotype classification.

Results
Our model, IMPACT, delivers improved predictive accuracy performance across multiclass classification compared to similar methods. More importantly, our approach provides interpretable feature importance through image classification saliency methods. This enables the extraction of taxa markers (features) associated with a disease outcome and also their associated functional microbial traits and metabolites.

Availability and implementation
IMPACT is available at https://github.com/SydneyBioX/IMPACT. We providedirect installation of IMPACT via pip.