bluuebunny/crossref_metadata_2025_split huggingface dataset:
Predictive understanding of the surface tension and velocity of sound in ionic liquids using machine learning
Authors: Mohan Mood , Smith Micholas Dean , Demerdash Omar , Kidder Michelle K. , Smith Jeremy C. 
Published: June 2023

Knowledge of the physical properties of ionic liquids (ILs), such as the surface tension and speed of sound, is important for both industrial and research applications. Unfortunately, technical challenges and costs limit exhaustive experimental screening efforts of ILs for these critical properties. Previous work has demonstrated that the use of quantum-mechanics-based thermochemical property prediction tools, such as the conductor-like screening model for real solvents, when combined with machine learning (ML) approaches, may provide an alternative pathway to guide the rapid screening and design of ILs for desired physiochemical properties. However, the question of which machine-learning approaches are most appropriate remains. In the present study, we examine how different ML architectures, ranging from tree-based approaches to feed-forward artificial neural networks, perform in generating nonlinear multivariate quantitative structure–property relationship models for the prediction of the temperature- and pressure-dependent surface tension of and speed of sound in ILs over a wide range of surface tensions (16.9–76.2 mN/m) and speeds of sound (1009.7–1992 m/s). The ML models are further interrogated using the powerful interpretation method, shapley additive explanations. We find that several different ML models provide high accuracy, according to traditional statistical metrics. The decision tree-based approaches appear to be the most accurate and precise, with extreme gradient-boosting trees and gradient-boosting trees being the best performers. However, our results also indicate that the promise of using machine-learning to gain deep insights into the underlying physics driving structure–property relationships in ILs may still be somewhat premature.
Detection of Quasi-periodic Oscillations in SGR 150228213
Authors: Chen Run-Chao , Deng Can-Min , Wang Xiang-Gao , Zhou Zi-Min , Yang Xing , Lin Da-Bin , Wang Qi , Liang En-Wei 
Published: June 2023

Abstract
The detection of quasi-periodic oscillations (QPOs) in magnetar giant flares (GFs) has brought a new perspective to studies of the mechanism of magnetar bursts. Due to the scarcity of GFs, searching for QPOs in magnetar short bursts is reasonable. Here we report the detection of a narrow QPO at approximately 110 Hz and a wide QPO at approximately 60 Hz in the short magnetar burst SGR 150228213, with a confidence level of 3.35σ. This burst was initially attributed to 4U 0142+61 by Fermi/GBM on location, but we have not detected such QPOs in other bursts from this magnetar. We also found that there was a repeating fast radio burst associated with SGR 150228213 on location. Finally, we discuss the possible origins of SGR 150228213.
Design and Application of Zero Poisson Large Deformation Superstructure
Authors: Song Kai , Du Jiazheng , Tao Ran 
Published: May 2023

Abstract
The variant wing can adapt to more complicated operating environment. There often need large thickness deformation and wingspan change in the process of wing deformation. Meanwhile, the deformation process should not affect other components, which requires that both the wing structure and the outer panel cover have the function of zero poisson’s ratio and large deformation. For this reason, this work designed a two-dimensional poisson’s ratio structure based on the topology optimization and variable density method. Then, optimization design method was adopted to meet the demand of zero poisson’s ratio and large deformation of wing cover. Furthermore, the equivalent elastic tensor of zero poisson’s ratio structure with large deformation was predicted using energy homogenization method, and the mechanical properties of zero poisson’s ratio structure were verified. Finally, numerical simulation method was conducted to predict the mechanical properties of zero poisson’s ratio wing covering lattice structure. To summarize, a kind of wing cover structure with zero poisson’s ratio and large deformation in this study was obtained and the application of this structure in aerospace was also demonstrated.
A Recommendation Model for Highway Horizontal Curve Indicators Based on Machine Learning
Authors: Ma Huanyu , Yin Lixiang , Shen Yang , Liang Zhedong , Chen Jun , Peng Jiangtao 
Published: May 2023

Abstract
The horizontal alignment design is the result of the designer’s comprehensive consideration of smooth alignment and satisfying multiple design goals such as safety, environmental protection and economy.Through analyzing a large number of highway horizontal design cases,the statistical laws of intersection spacing, declination angle and the relationship between them are introduced. Based on this and the machine learning algorithms, a horizontal basic curve indicator recommendation model suitable for the single intersection design and the double intersection design process is built. Finally, the reliability of the model is verified and evaluated by using the calculation accuracy, test set error and average difference.
Finite Element Simulation of Jet Fracture and Distribution of Grooving Charge Cover on Inner Surface
Authors: Peng Zhou , Rujiang Li 
Published: May 2023

Abstract
According to the analysis of the application of grooves on the inner surface of the conical charge cover in JET warhead, when the charging structure of the conical charge cover and the caliber of the charge cover are determined, Ansys LS-DYNA explicit finite element analysis software was used to study the JET fracture time, JET granulation and JET distribution caused by the groove depth and groove spacing of the inside surface of the charge cover of five groups. On this basis, parallel group experiments were conducted to analyze the data structure of the five groups. The influence law of groove structure on jet after effect on the inner surface of conical drug cover was obtained. It was found that when groove depth was 0.1mm, the effect on jet after effect was good, while the effect on jet after effect was poor when groove depth was 0.2mm. Reducing groove spacing on the inner surface would optimize jet fracture.
Design of a Thick Gas Electron Multiplier based photon pre-amplifier
Authors: Putignano O. , Muraro A. , Cancelli S. , Giacomelli L. , Gorini G. , Grosso G. , Kushoro M.H. , Marcer G. , Nocente M. , Perelli Cippo E. , Rebai M. , Tardocchi M. , Croci G. 
Published: June 2023

Abstract
In this paper we present the design of a photon pre-amplifier based on a photo-cathode
coated Thick Gas Electron Multiplier (THGEM). Such device is crucial in application where a weak
light signal produced in a radiation detector must be amplified so that it can be carried to a
photo-detector by means of optical fibres. An example of a device where a light signal must be
amplified is a gamma-ray Cherenkov detector for fusion power measurements in magnetic confinement
devices. In such application the active part of the detector must be located very close the
plasma, typically in a harsh radiation environment where standard photodetectors cannot operate.
The photon pre-amplifier allows to increase the signal generated in the active part of the
detector so that it can be easily detected by the photodetector located outside the harsh
environment. We present the conceptual design of a THGEM based photon pre-amplifier supported by
Garfield++ simulations. The device working principle is the following: primary photons impinge on
the photo-cathode and extract electrons that are accelerated by the THGEM electric field. Upon
collisions with the accelerated electrons, the gas molecules in the pre-amplifier are brought to
excited states and de-excite emitting scintillation photons. Since each electron excites multiple
gas molecules, the scintillation photons outnumber the primary photons, leading to the
amplification. In addition, we present the first observation of measurements of Nitrogen gas
scintillation in a THGEM device. We devised an experimental setup consisting of a vacuum chamber
containing a THGEM and an alpha particle source. The vacuum chamber is filled with pure nitrogen
and is coupled to a photomultiplier tube via a view-port to detect the scintillation photons
generated in the THGEM. For sake of simplicity the electrons that induce the scintillation are
generated by the ionization track of an alpha particle rather than by the THGEM photo-cathode
coating. A good qualitative agreement between simulations and experiment has been found, however
no quantitative conclusions can be made due to the lack of N2 excitation cross sections in
the Garfield++ code.
Settlement Analysis in Potentially Liquifiable Soil at Kretek 2 Bridge Area
Authors: Nurdiansyah F , Adi A D , Ismanti S 
Published: June 2023

Abstract
The Kretek 2 Bridge is one of the important infrastructures built on the southern coast road of Java. Referring to the Map of Indonesia Liquefaction Vulnerability Zone in 2019, Kretek 2 Bridge was identified as a high liquefaction susceptibility zone. The result of liquefaction potential analysis on the slab-on-pile section indicates that the soil layer has potential to liquefy if an earthquake occurs. Based on the Liquefaction Severity Index, the slab-on-pile section of the Kretek 2 Bridge has a high severity index at BH-10, moderate severity index at BH-11, and low severity index at BH-01 and BH-12. One of liquefaction effects is a ground settlement. Settlement due to liquefaction is a vertical soil deformation in the soil layer caused by compaction due to the earthquake. This study was conducted by calculating the settlement of sand deposits in slab-on-pile section using an equation proposed by Zhang et al. in 2002 and Yoshimine in 2006. The results of settlement analysis using Zhang’s method to predict settlement in the study area, BH-10 having the most significant settlement at 29.803 cm. Using the settlement analysis method by Yoshimine, the highest settlement found in BH-10, which is 30.401 cm.
Failure Investigation of Braced Excavation in Soft Clays: Case Study on the Collapse of Nicoll Highway
Authors: Abdi Ari Surya , Ou Chang-Yu 
Published: June 2023

Abstract
Deep excavation in clay normally causes large soil movement, which may induce basal heave failure. In this study, the three-dimensional finite element analysis with the strength reduction method was employed to evaluate the typical failure mechanism of braced excavation in soft clays. The collapse of Nicoll Highway was selected as a failure case history and further conducted by considering the full elastoplastic structural behavior. The results showed that the computed wall displacements were successfully verified through the observation data. It was also found that the excavation failure was initiated by the yielding of the strut-waler connection, which was similar to that of the field observation. Finally, the proposed finite element model adopted in this study can be used as a design recommendation to evaluate the failure mechanism and further prevent possible braced excavation failure in soft clays.
Characterization of sprayable mulch film from yam nagara starch for agricultural application
Authors: Ghani RA , Elma M , Lestari RA , Alsiren A , Nasruddin  , Rahma A 
Published: June 2023

Abstract
The conventional mulch film generally produced from plastic to control of weed in agriculture activities. Nevertheless, the used of conventional mulch film has impact to pollute the environment, due to non-degradable. Therefore, mulch film from natural material derived yam nagara starch can be alternative to substitute the conventional mulch film that more eco-friendly. The aims of this study are to fabricate and characterization of mulch film from yam nagara starch which prepared by sprayed technique. The yam nagara starch prepared from local sweet potato varieties (Ipomoea batatas L) of Nagara, South Kalimantan. Fabrication of mulch film was conducted by mixed yam nagara starch with varied composition (0.25-0.75 wt%), hydrolysed keratin of chicken feather, corn gluten meal (CGM), acetate acid, and carbon black. The final solution of yam nagara mulch film was applied on top soil as plant medium using compressor spray gun and left to dry for 24 h. Furthermore, the sprayable mulch films were characterized by several parameters i.e., FTIR, water solubility, water uptake, tensile strength and elongation. Sprayable mulch film from yam nagara starch were successfully fabricated for agriculture application. The results show the sprayable mulch film with composition of 0.75 wt% yam nagara starch obtain a good plastic-like characteristics and may be affordable to be degraded due to easily to can soluble with water and high-water uptake properties. In other hand, sprayable mulch film from yam nagara starch in this work affordable to restrains weeds of the chilli plants for agriculture application.
Measuring The Use of Detention Basin as Flood Control System at Campus I Lambung Mangkurat University Banjarmasin, Indonesia
Authors: Amalia Maya , Muchamad Bani Noor , Sutanti Maulidya Putri , Sofia Elma , Helda Noordiah 
Published: June 2023

Abstract
South Kalimantan Province has experienced floods during the rainy seasons due to high intensity of precipitation. In mid-January 2021, flood inundated the Banjarmasin Campus I area of Lambung Mangkurat University (ULM Campus I). In mid-December 2021, other flood case inundated Campus I ULM. The research aims to measure the effectiveness of using detention basin as flood control in Banjarmasin campus area of ULM. Data collection is based on hydrological analysis of rain data to obtain a designed flood discharge with a return period of 20 years using the Der Weduwen method. The hydraulic analysis of the transverse and longitudinal sections on the river section of Campus I ULM was analyzed using the HEC-RAS. Based on the value of the flood volume, an analysis of the volume of the detention basin is carried out, where the volume of the detention basin must be greater than the volume of the flood. Spatial data is used to obtain contours using ArcGIS, to determine the optimal location of the detention basin. Based on the simulation, cumulative planned flood volume was 36,010 m3 with a discharge value of 89.30 m3/s. It was designed two detention basin. First detention basin dimension is 160 m x 130 m x 1.5 m located closed to General Building. The second one, located at Master of Law Building with dimension is 120 m x 35 m x 1.5 m First detention basin dimension is 160 m x 130 m x 1.5 m located closed to General Building. The second one, located at Master of Law Building with dimension is 120 m x 35 m x 1.5 m.
The compressive strength and the setting time of partial replacement of fly ash by palm oil fuel ash on geopolymer paste and mortar
Authors: Nurwidayati R , Saidy A R , Wardhana H , Chairunnisa N , Anshar A 
Published: June 2023

Abstract
This study replaced fly ash with palm oil fuel ash (POFA) in geopolymer paste and mortar. The alkaline activator was a mixture of sodium silicate solution and sodium hydroxide solution with a ratio of 2.5. Three variables were evaluated: the raw material combination (100% fly ash and 25% POFA substituted to fly ash), the mass ratio of raw material to alkali activator (60/40, 65/35, and 70/30), and NaOH molarity (8 M and 10 M). The geopolymer mortar was utilized based on the highest compressive strength of geopolymer paste. The ratio of fine aggregate to binder was 65 to 35. The result showed that the compressive strength of geopolymer paste increased as NaOH molarity increased. 25% substitution of POFA for fly ash increased the compressive strength of geopolymer paste from 12.0% to 27% at 28 days. The raw material/ alkali activator ratio of 65/35 indicated the highest compressive strength. The POFA replacement for fly ash had a longer setting time than 100% fly ash. The compressive strength ratio of mortar to the geopolymer paste was 0.66 and 0.59 for the 65/35 and 70/30 ratios of raw material to alkali activator, respectively.
Single and combined use of fall-risk-increasing drugs and fracture risk: a population-based case–control study
Authors: Hauff Jonathan , Rottenkolber Marietta , Oehler Patrick , Fischer Sebastian , Gensichen Jochen , Drey Michael , Alexander G Caleb , Guthrie Bruce , Dreischulte Tobias 
Published: June 2023

Abstract

Background
while many drug groups are associated with falls in older people, less is known about absolute increases in risk and how these risks vary across different groups of drugs or individuals.

Method and Design
we conducted a population based nested case–control study among people aged ≥65 years in the Scottish regions of Tayside and Fife. Cases were individuals hospitalised with a fracture between 2010 and 2020, to whom we matched up to 10 controls. We examined relative and absolute risks of drug groups known as ‘Fall-Risk-Increasing Drugs’ (FRIDs), alone and in combination, and among younger and older (≥75 years) adults. Adjusting for previous hospitalisations, drug use and laboratory data, we used conditional logistic regression to quantify associations between drug exposures and outcomes. We conducted four sensitivity analyses to test the robustness of our findings.

Results
the cohort comprised 246,535 people aged ≥65 years, of whom 18,456 suffered an incident fracture. Fracture risks were significantly increased for most FRIDs examined. Absolute risks were much larger among older vs younger people and both relative and absolute risks increased with the number of FRIDs combined. Overall, the highest absolute increase in risk were found in people aged ≥75 years for selective serotonin reuptake inhibitors (number needed to harm 53), tricyclic antidepressants (NNH 81), antipsychotics (NNH 75) and use of three or more FRIDs (NNH ≤66).

Conclusion
patients aged ≥75 years prescribed antidepressants or antipsychotics or taking three or more drugs that increase risk of falls may benefit most from deprescribing interventions.
Characterization of a soluble library of thePseudomonas aeruginosaPAO1 membrane proteome with emphasis on c-di-GMP turnover enzymes
Authors: Scherhag Anna , Räschle Markus , Unbehend Niklas , Venn Benedikt , Glueck David , Mühlhaus Timo , Keller Sandro , Pérez Patallo Eugenio , Zehner Susanne , Frankenberg-Dinkel Nicole 
Published: June 2023

AbstractStudies of protein–protein interactions in membranes are very important to fully understand the biological function of a cell. The extraction of proteins from the native membrane environment is a critical step in the preparation of membrane proteins that might affect the stability of protein complexes. In this work, we used the amphiphilic diisobutylene/maleic acid copolymer to extract the membrane proteome of the opportunistic pathogen Pseudomonas aeruginosa, thereby creating a soluble membrane-protein library within a native-like lipid-bilayer environment. Size fractionation of nanodisc-embedded proteins and subsequent mass spectrometry enabled the identification of 3358 proteins. The native membrane-protein library showed a very good overall coverage compared to previous proteome data. The pattern of size fractionation indicated that protein complexes were preserved in the library. More than 20 previously described complexes, e.g. the SecYEG and Pili complexes, were identified and analyzed for coelution. Although the mass-spectrometric dataset alone did not reveal new protein complexes, combining pulldown assays with mass spectrometry was successful in identifying new protein interactions in the native membrane-protein library. Thus, we identified several candidate proteins for interactions with the membrane phosphodiesterase NbdA, a member of the c-di-GMP network. We confirmed the candidate proteins CzcR, PA4200, SadC, and PilB as novel interaction partners of NbdA using the bacterial adenylate cyclase two-hybrid assay. Taken together, this work demonstrates the usefulness of the native membrane-protein library of P. aeruginosa for the investigation of protein interactions and membrane-protein complexes. Data are available via ProteomeXchange with identifiers PXD039702 and PXD039700.
The Indivisibility of Human Rights: An Empirical Analysis
Authors: Essink Jan , Quintavalla Alberto , Temperman Jeroen 
Published: June 2023

Abstract
This article aims to test whether human rights have an indivisible nature. To do that, we perform correlation analysis and Granger causality tests to test 1) the relationship within socio-economic rights and 2) between socio-economic rights and civil-political rights. The results show that certain socio-economic rights have mutual reinforcing relationships, lending support to the existence of widespread indivisibility. This finding yields relevant policy implications. Given their financial constraints, states could make use of the existence of widespread indivisibility, in combination with the progressive implementation clause, to foster the efficient allocation of resources for human rights implementation. Furthermore, this article shows that the intensity of indivisibility varies depending on the income category of states: the indivisible nature of socio-economic rights is more intense in low-income countries while seems to achieve a saturation point at the highest levels of human rights compliance. We, thus, propose to define this phenomenon as ‘indivisibility saturation’. Lastly, our findings detect a more complex picture for the indivisibility principle between the two classes of human rights. While widespread indivisibility does not follow from the tests, important unidirectional relationships between different human rights exist and are equally important for human rights policy-making purposes.
A Positivity Criterion for the Wave Equation and Global Existence of Large Solutions
Authors: Beceanu Marius , Soffer Avy 
Published: June 2023

Abstract
In dimensions one to three, the fundamental solution to the free wave equation is positive. Therefore, there exists a simple positivity criterion for solutions. We use this to obtain large global solutions to two well-studied energy-supercritical semilinear wave equations, as well as some new results in the subcritical and critical cases.