bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geochemistry of Cenozoic coals from Sarawak Basin, Malaysia: implications for paleoclimate, depositional conditions, and controls on petroleum potential
Authors: Asiwaju Lanre , Mustapha Khairul Azlan , Abdullah Wan Hasiah , Sia Say Gee , Hakimi Mohammed Hail 
Published: June 2024

AbstractForty Tertiary coals from Mukah-Balingian and Merit-Pila coalfields of the Sarawak Basin, Malaysia were investigated using bulk and molecular geochemical techniques such as proximate analysis, gas chromatography-mass spectrometry, elemental analyser, isotope ratio mass spectrometry, and inductively coupled plasma mass spectrometry to reconstruct their paleovegetation, paleoclimate, and environments of deposition. In addition, principal component analysis (PCA) of selected geochemical parameters was carried out to determine the controlling influences on the petroleum potential of the humic coals. δ13C values and the abundance of terpenoids imply the predominant contribution of angiosperms to the paleoflora. Bimetal proxies (Sr/Ba, Sr/Cu, and C-value), and δD values are generally suggestive of a warm and humid climate during the accumulation of the paleopeats. However, n-alkane proxies (Pwax, Paq, n-C23/n-C29, etc.) and polycyclic aromatic hydrocarbons (PAHs) distribution suggest that Balingian coals accumulated under relatively drier and strongly seasonal paleoclimate in the Late Pliocene. When compared with published global average abundances, the investigated coals are mostly depleted in major oxides and trace elements, suggesting peat accumulation in freshwater-influenced environments. Nonetheless, higher (> 0.5 wt%) total sulfur content in some Mukah-Balingian coals suggests some degree of epigenetic marine influence. Furthermore, the low to moderately-high ash contents of the Sarawak Basin coals indicate the presence of ombrotrophic and rheotrophic peat deposits. PCA result of selected geochemical proxies suggests that source input, paleoflora, and marine incursions are not major controlling influences on the petroleum potential. However, climatic, and depositional conditions appear to slightly influence the petroleum potential of the studied humic coals.
Challenges and Solutions to Meet the Euro 7 NOx Emission Requirements for Diesel Light-Duty Commercial Vehicles
Authors: Kossioris Theodoros , Maurer Robert , Sterlepper Stefan , Günther Marco , Pischinger Stefan 
Published: June 2024

AbstractThe improvement of air quality requires a further reduction of pollutant emissions, especially in urban areas. The Euro 7 regulations aim at the development of a new generation of internal combustion engine vehicles capable of achieving ultra-low pollutant emissions under demanding, real-world operating conditions. They introduce new technical challenges in the holistic design of a vehicle’s powertrain and emission control system. To identify these, four real-world Euro 7 driving scenarios are investigated, covering demanding urban, highway and mountain driving situations. Technical solutions are then presented to address these challenges and ensure compliance with the Euro 7 emission requirements as set out in the latest regulation proposal of the European Commission. The study focuses on the NOx emissions of an N1 Class III light commercial vehicle with 3.5 t mass and a P2 diesel mild-hybrid powertrain. To ensure emission compliance, a Euro 6e exhaust gas aftertreatment system with enlarged catalysts is combined with NOx raw emission improvements. For low-load cold starts, a 4-kW electric heater in the exhaust system is considered in addition to a 2-l DOC and a 6-l DPF with SCR coating. For high-load cycles with high raw emissions, a 10-l underfloor SCR is considered to ensure the necessary deNOx performance.
Augmented degree correction for bipartite networks with applications to recommender systems
Authors: Leinwand Benjamin , Pipiras Vladas 
Published: June 2024

AbstractIn recommender systems, users rate items, and are subsequently served other product recommendations based on these ratings. Even though users usually rate a tiny percentage of the available items, the system tries to estimate unobserved preferences by finding similarities across users and across items. In this work, we treat the observed ratings data as partially observed, dense, weighted, bipartite networks. For a class of systems without outside information, we adapt an approach developed for dense, weighted networks to account for unobserved edges and the bipartite nature of the problem. The approach begins with clustering both users and items into communities, and locally estimates the patterns of ratings within each subnetwork induced by restricting attention to one community of users and one community of items community. The local fitting procedure relies on estimating local sociability parameters for every user and item, and selecting the function that determines the degree correction contours which best models the underlying data. We compare the performance of our proposed approach to existing methods on a simulated data set, as well as on a data set of joke ratings, examining model performance in both cases at differing levels of sparsity. On the joke ratings data set, our proposed model performs better than existing alternatives in relatively sparse settings, though other approaches achieve better results when more data is available. Collectively, the results indicate that despite struggling to pick up subtler signals, the proposed approach’s recovery of large scale, coarse patterns may still be useful in practical settings where high sparsity is typical.
Field effectiveness of some essential oil emulsions against the whitefly Bemisia tabaci (GENN.) that infest potato plants in Egypt
Authors: Wahba Trandil F. , Abd-Elatef Enas Adel , Wahba Mona N. 
Published: June 2024

AbstractWhitefly, Bemisia tabaci, nymphs and sucking sap adults, is one of the most damaging pests of potato, Solanum tuberosum. Excessive use of pesticides causes environmental pollution and the death of beneficial insects, so it is necessary to search for safer controlling alternatives. An experiment was carried out during seasons 2020–2021 and 2021–2022, under field conditions in Egypt. The objective of this study was to identify the main constituent compounds of peppermint and eucalyptus essential oils prepare coarse emulsion (CE) and nanoemulsion (NE) of both peppermint and eucalyptus essential oils and evaluate their efficiency against the whitefly, B. tabaci, in potato cultivars and the effect of these emulsions on the chemical components of potato leaves. The results revealed that the toxicity of the emulsions decreased with increasing time after spraying. The second spray which took place at a 10-day interval was more effective than the first spray. During the season of 2021, three days following the second spray, the tested emulsions' toxicity was highly effective. The reduction percentages of nymph for peppermint coarse emulsion (PCE), peppermint nanoemulsion (PNE), eucalyptus coarse emulsion (ECE), eucalyptus nanoemulsion (ENE) and imidacloprid were 82.64, 84.14, 73.26, 72.72 and 89.03, but they were 78.58, 83.27, 77.85, 69.97 and 89.26 compared with 2022. A moderately positive correlation was identified between temperature, specific humidity, wind speed and the effectiveness of the emulsions. This indicates that higher levels of temperature, humidity and wind speed were associated with increased efficacy of the emulsions. The study of the phytochemicals (total soluble protein, total carbohydrate, total phenolic contents and peroxidase activity). PCE and ECE achieved a slight decrease in protein levels. Also, ECE increased total plant carbohydrates. All treatments did not affect the phenolic compounds of potato leaf plants except ENE, which caused an increase in phenolic compounds. All treatments decreased the nitrogen plants' contents, while PCE, PNE, and ENE increased the potassium content. All treatments increase the activity of peroxidase (POX) compared with untreated plants. The formulations PNE and ENE might be an interesting alternative for integrated pest management of B. tabaci nymphs.
Super-Resolution by Localized Plasmonic Structured Illumination Microscopy Using Self-Assembled Nanoparticle Substrates
Authors: Guan Yizhao , Masui Shozo , Kadoya Shotaro , Michihata Masaki , Takahashi Satoru 
Published: June 2024

AbstractStructured illumination microscopy (SIM), an advanced super-resolution methodology, transcends the traditional diffraction limit inherent in optical imaging. This technique utilizes standing-wave illumination generated through the interplay of two obliquely incident light waves. The intrinsic resolution constraint of SIM, traditionally pegged at half the wavelength because of the standing wave’s periodicity, has the potential for enhancement by integrating high spatial frequency illumination patterns, particularly when sourced in the near-field of plasmonic nanostructures. The present study introduces and computationally validates a novel, easily fabricated substrate composed of self-assembled gold nanoparticles designed explicitly for generating these high spatial frequency patterns. Addressing the necessity for diverse patterns in reconstructing super-resolution imagery within plasmonic SIM, this research conducted extensive numerical simulations of nanoparticle arrays under varying illumination scenarios. This undertaking affirmed the feasibility of manipulating high-frequency patterns. Super-resolution reconstruction was actualized by applying Blind-SIM techniques, which verified its effectiveness. This innovative approach notably achieved a resolution threshold of 60 nm, markedly exceeding the conventional 150 nm diffraction barrier and surpassing the 75 nm resolution typically observed in standard SIM applications.
Test for high-dimensional outliers with principal component analysis
Authors: Nakayama Yugo , Yata Kazuyoshi , Aoshima Makoto 
Published: June 2024

AbstractWe herein consider a test of outlier detection for high-dimensional, low-sample-size (HDLSS) data. Although outlier detection is a fundamental problem, it has not been extensively studied in the HDLSS setting. We derive asymptotic properties of the first principal component scores with outliers. We consider high-dimensional outlier detection by applying the asymptotic properties to the Grubbs test, a well-known method for testing outliers. Our results indicate that the test statistic provides preferable performance for both the size and power. Using this test procedure, we propose an algorithm to identify multiple outliers. We present an investigation of the theoretical properties of a sure independent screening and it can achieve complete identification of the outliers with high accuracy. Finally, we investigate the performance for both numerical studies and real data analyses as compared to available outlier detection methods in HDLSS settings. The proposed method exhibits superiority in terms of not only correctly detecting outliers, but also identifying a number of false identifications.
Growth modulation response in vertebral body tethering depends primarily on magnitude of concave vertebral body growth
Authors: Louer Craig R. , Upasani Vidyadhar V. , Hurry Jennifer K. , Nian Hui , Farnsworth Christine L. , Newton Peter O. , Parent Stefan , El-Hawary Ron ,   Pediatric Spine Study Group (PSSG)
Published: June 2024

Abstract
Purpose
There is variability in clinical outcomes with vertebral body tethering (VBT) partly due to a limited understanding of the growth modulation (GM) response. We used the largest sample of patients with 3D spine reconstructions to characterize the vertebra and disc morphologic changes that accompany growth modulation during the first two years following VBT.

Methods
A multicenter registry was used to identify idiopathic scoliosis patients who underwent VBT with 2 years of follow-up. Calibrated biplanar X-rays obtained at longitudinal timepoints underwent 3D reconstruction to obtain precision morphological measurements. GM was defined as change in instrumented coronal angulation from post-op to 2-years.

Results
Fifty patients (mean age: 12.5 ± 1.3yrs) were analyzed over a mean of 27.7 months. GM was positively correlated with concave vertebra height growth (r = 0.57, p < 0.001), 3D spine length growth (r = 0.36, p = 0.008), and decreased convex disc height (r = − 0.42, p = 0.002). High modulators (patients experiencing GM > 10°) experienced an additional 1.6 mm (229% increase) of mean concave vertebra growth during study period compared to the Poor Modulators (GM < − 10°) group, (2.3 vs. 0.7 mm, p = 0.039), while convex vertebra height growth was similar (1.3 vs. 1.4 mm, p = 0.91).

Conclusion
When successful, VBT enables asymmetric vertebra body growth, leading to continued postoperative coronal angulation correction (GM). A strong GM response is correlated with concave vertebral body height growth and overall instrumented spine growth. A poor GM response is associated with an increase in convex disc height (suspected tether rupture). Future studies will investigate the patient and technique-specific factors that influence increased growth remodeling.
Spatial transcriptomics: a new frontier in cancer research
Authors: Huang Siyuan , Ouyang Linkun , Tang Junjie , Qian Kun , Chen Xuanwei , Xu Zijie , Ming Jingsi , Xi Ruibin 
Published: June 2024

AbstractTumor research is a fundamental focus of medical science, yet the intrinsic heterogeneity and complexity of tumors present challenges in understanding their biological mechanisms of initiation, progression, and metastasis. Recent advancements in single-cell transcriptomic sequencing have revolutionized the way researchers explore tumor biology by providing unprecedented resolution. However, a key limitation of single-cell sequencing is the loss of spatial information during single-cell preparation. Spatial transcriptomics (ST) emerges as a cutting-edge technology in tumor research that preserves the spatial information of RNA transcripts, thereby facilitating a deeper understanding of the tumor heterogeneity, the intricate interplay between tumor cells and the tumor microenvironment. This review systematically introduces ST technologies and summarizes their latest applications in tumor research. Furthermore, we provide a thorough overview of the bioinformatics analysis workflow for ST data and offer an online tutorial (https://github.com/SiyuanHuang1/ST_Analysis_Handbook). Lastly, we discuss the potential future directions of ST. We believe that ST will become a powerful tool in unraveling tumor biology and offer new insights for effective treatment and precision medicine in oncology.
Rethinking Water Governance in the Saskatchewan River Delta Through Indigenous Relational Worldviews
Authors: Acharibasam John Bosco , Riley Kathryn , Datta Ranjan , McKenzie Elder Denise , Favel Elder Veronica 
Published: June 2024

AbstractThis study critically examines the implications of integrating Indigenous relational worldviews into the water governance framework of the Saskatchewan River Delta. Using a relational theoretical framework and community-based participatory research methodology, both Indigenous community members and non-Indigenous researchers collectively examine the negative impacts of Western water governance policies and practices on the Métis community residing in Cumberland House, located in northeast Saskatchewan, Canada. Through Indigenous traditional water story-sharing methods with Indigenous Elders and Knowledge Keepers, our focus centres on Indigenous interpretations and ways of knowing the Delta. The community highlighted the pervasive influence of power dynamics and political agendas in the governance of the Delta. As such, we emphasise the necessity of challenging settler colonial systems and structures and reinvigorating Indigenous worldviews for water governance. By doing so, we advocate for the advancement of Indigenous sovereignty and self-determination in their relationship with land and water, thereby promoting the meaningful implications of the Truth and Reconciliation Commission Calls to Action.
Fair Play Externalism and the Obligation to Relinquish
Authors: FRIGAULT JOSEPH 
Published: June 2024

Abstract
This essay defends a new account of wrongful benefiting based on the principle of fair play. In particular, I argue that certain structurally-conferred group-based benefits or privileges can ground obligations on the part of innocent beneficiaries to relinquish specific gains for purposes of redistribution regardless of whether their receipt is sourced in wrongdoing or involves the imposition of harm upon relevant others. I call this approach to fair play reasoning externalist insofar as it turns on a novel conception of free-riding that eschews necessary appeal to beneficiaries’ mental states or volition. After presenting an empirical example to help illustrate the sort of benefiting at issue and distinguishing my account from arguments rooted in the notion of structural injustice, I defend it via what I call the extension argument, respond to two salient objections, and close by suggesting its potential political utility in the American context specifically.
Building Epistemically Healthier Platforms
Authors: Amico-Korby Dallas , Harrell Maralee , Danks David 
Published: June 2024

Abstract
When thinking about designing social media platforms, we often focus on factors such as usability, functionality, aesthetics, ethics, and so forth. Epistemic considerations have rarely been given the same level of attention in design discussions. This paper aims to rectify this neglect. We begin by arguing that there are epistemic norms that govern environments, including social media environments. Next, we provide a framework for applying these norms to the question of platform design. We then apply this framework to the real-world case of long-form informational content platforms. We argue that many current long-form informational content platforms are epistemically unhealthy. The good news? We provide concrete advice on how to take steps toward improving their health! Specifically, we argue that they should change how they verify and authenticate content creators and how this information is displayed to content consumers. We conclude by connecting this guidance to broader issues about the epistemic health of platforms.
Victims and diplomats: European white stork conservation efforts, animal representations, and images of expertise in postwar ornithology
Authors: Schleper Simone 
Published: June 2024

ArgumentThis article discusses two approaches to save the European white stork populations from extinction that emerged after 1980. Despite the shared objective to devise transnational, science-based conservation measures, the two approaches’ geographical focus was radically different. Projects by the World Wildlife Fund and the International Council for Bird Preservation focused firmly on the stork’s wintering areas on the African continent. Interventions by a second group of ornithologists at the Max Planck Institute for Ornithology in Radolfzell concentrated on the Middle East as a migration bottleneck. Based on archival research, interviews and correspondence with involved ornithologists, the article examines stork representations as an important lens for investigating the professional politics of ecology and conservation. It shows that representations of white storks, the birds’ ecology, and derived conservation hotspots became part of the boundary work used by European ornithologists in the creation of changing scientific and institutional identities.
Precise mode control of laser-written waveguides for broadband, low-dispersion 3D integrated optics
Authors: Wang Yuying , Zhong Lijing , Lau Kuen Yao , Han Xuhu , Yang Yi , Hu Jiacheng , Firstov Sergei , Chen Zhi , Ma Zhijun , Tong Limin , Chiang Kin Seng , Tan Dezhi , Qiu Jianrong 
Published: June 2024

AbstractThree-dimensional (3D) glass chips are promising waveguide platforms for building hybrid 3D photonic circuits due to their 3D topological capabilities, large transparent windows, and low coupling dispersion. At present, the key challenge in scaling down a benchtop optical system to a glass chip is the lack of precise methods for controlling the mode field and optical coupling of 3D waveguide circuits. Here, we propose an overlap-controlled multi-scan (OCMS) method based on laser-direct lithography that allows customizing the refractive index profile of 3D waveguides with high spatial precision in a variety of glasses. On the basis of this method, we achieve variable mode-field distribution, robust and broadband coupling, and thereby demonstrate dispersionless LP21-mode conversion of supercontinuum pulses with the largest deviation of <0.1 dB in coupling ratios on 210 nm broadband. This approach provides a route to achieve ultra-broadband and low-dispersion coupling in 3D photonic circuits, with overwhelming advantages over conventional planar waveguide-optic platforms for on-chip transmission and manipulation of ultrashort laser pulses and broadband supercontinuum.
Molecular and structural basis of an ATPase-nuclease dual-enzyme anti-phage defense complex
Authors: An Qiyin , Wang Yong , Tian Zhenhua , Han Jie , Li Jinyue , Liao Fumeng , Yu Feiyang , Zhao Haiyan , Wen Yancheng , Zhang Heng , Deng Zengqin 
Published: June 2024

AbstractCoupling distinct enzymatic effectors emerges as an efficient strategy for defense against phage infection in bacterial immune responses, such as the widely studied nuclease and cyclase activities in the type III CRISPR-Cas system. However, concerted enzymatic activities in other bacterial defense systems are poorly understood. Here, we biochemically and structurally characterize a two-component defense system DUF4297–HerA, demonstrating that DUF4297–HerA confers resistance against phage infection by cooperatively cleaving dsDNA and hydrolyzing ATP. DUF4297 alone forms a dimer, and HerA alone exists as a nonplanar split spiral hexamer, both of which exhibit extremely low enzymatic activity. Interestingly, DUF4297 and HerA assemble into an approximately 1 MDa supramolecular complex, where two layers of DUF4297 (6 DUF4297 molecules per layer) linked via inter-layer dimerization of neighboring DUF4297 molecules are stacked on top of the HerA hexamer. Importantly, the complex assembly promotes dimerization of DUF4297 molecules in the upper layer and enables a transition of HerA from a nonplanar hexamer to a planar hexamer, thus activating their respective enzymatic activities to abrogate phage infection. Together, our findings not only characterize a novel dual-enzyme anti-phage defense system, but also reveal a unique activation mechanism by cooperative complex assembly in bacterial immunity.