bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Hydrothermal Degradation on Flexural Fatigue Strength of Various Cubic-Containing Translucent Zirconia
Authors: Kengtanyakich Santiphab , Peampring Chaimongkon 
Published: October 2022

Abstract
Objective The aim of this study is to investigate the fatigue and hydrothermal degradation behavior among the cubic-containing translucent yttrium oxide stabilized tetragonal zirconia polycrystal (Y-TZP).
Materials and Methods Four groups of commercial Y-TZP (T, ST, XT, and P), containing different amount of cubic crystal, were examined. Artificial aging was accomplished by autoclaving at 122°C under 2 bar pressure for 8 hours. Fatigue simulation parameters were set using an axial 50 N load, a total of 240,000 cycles. Flexural fatigue strength was evaluated.
Statistical Analysis Two-way analysis of variance with Tukey's honestly significant difference test was used to determine the difference in fatigue strength values between various type of zirconia materials within control and aging with a significant level of 5%. Weibull analysis was conducted on the fatigue strength data.
Results All groups showed the mean flexural fatigue strength had no significant difference in hydrothermally aged specimens compared with specimens without aging (p = 0.154). Group T showed significantly higher flexural fatigue strength followed by group ST, XT, and P. Group XT and P showed no significant difference in strength value (p > 0.05). Group T demonstrated a lower probability of failure than group ST, XT, and P whether with or without aging. Weibull modulus in group T and ST with aging condition was increased and higher than all the experimental groups.
Conclusion Cubic-containing zirconia materials (group ST, XT, and P) exhibited lower flexural fatigue strength than non-cubic 3Y-TZP zirconia (group T). However, various cubic-containing translucent zirconia was assumed to have high resistance to hydrothermal degradation.
Information theoretic approach to effects of spin–orbit coupling in quasi-one-dimensional Bose–Einstein condensates
Authors: Sekh Golam Ali , Talukdar Benoy , Chatterjee Supriya , Khan Basir Ahamed 
Published: October 2022

Abstract
We consider a spin-orbit coupled (SOC) one dimensional Bose–Einstein condensate (BEC) with attractive atom-atom interaction and make use of Shannon entropy (S), and Fisher information (I) to study the response of atomic density profiles to changes in κ

L
, the strength of the spin–orbit coupling for fixed values of Rabi frequency (Ω). Density profiles of our interest are characterized by (i)

κ

L

2

<
Ω

(region 1) and (ii)

κ

L

2

>
Ω

(region 2). We also pay attention to a spatially modulated density profile representing stripe phase of the condensate. Our numbers for S and I show that in region 1 the profile becomes localized as κ

L
increases while in region 2 we observe delocalization. Values of I in the stripe phase provide an evidence for the supersolid properties of the SOC BEC and indicate that supersolidity is a purely quantum phenomenon.
Chameleon screening depends on the shape and structure of NFW halos
Authors: Tamosiunas Andrius , Briddon Chad , Burrage Clare , Cui Weiguang , Moss Adam 
Published: October 2022

Abstract
Chameleon gravity is an example of a model that gives rise to interesting phenomenology on cosmological scales while simultaneously possessing a screening mechanism, allowing it to avoid solar system constraints. Such models result in non-linear field equations, which can be solved analytically only in simple highly symmetric systems. In this work we study the equation of motion of a scalar-tensor theory with chameleon screening using the finite element method. More specifically, we solve the field equation for spherical and triaxial NFW cluster-sized halos. This allows a detailed investigation of the relationship between the NFW concentration and the virial mass parameters and the magnitude of the chameleon acceleration, as measured at the virial radius. In addition, we investigate the effects on the chameleon acceleration due to halo triaxiality. We focus on the parameter space regions that are still allowed by the observational constraints. We find that given our dataset, the largest allowed value for the chameleon-to-NFW acceleration ratio at the virial radius is ∼ 10-7. This result strongly indicates that the chameleon models that are still allowed by the observational constraints would not lead to any measurable effects on galaxy cluster scales. Nonetheless, we also find that there is a direct relationship between the NFW potential and the chameleon-to-NFW acceleration ratio at the virial radius. Similarly, there is a direct (yet a much more complicated) relationship between the NFW concentration, the virial mass and the acceleration ratios at the virial radius. Finally, we find that triaxiality introduces extra directional effects on the acceleration measurements. These effects in combination could potentially be used in future observational searches for fifth forces.
Laser radiation producing no interference speckle patterns
Authors: Kobtsev Sergey 
Published: October 2022

Abstract
Approaches to the development of an incoherent laser are analysed. Implementation of such a laser on the basis of noise-like pulse generation is discussed. Fairly high stability of the average output power in such a regime leads to the contemplation of practical avenues to developing an incoherent laser relying on noise-like pulses. Implementation of such a laser on the basis of the fibre-optical platform further poses such requirements as all-fibre design using polarisation-maintaining fibre and adoption of alternatives to material-based saturable absorbers. Applications are demonstrated in which an incoherent laser—a radically new source of optical radiation—is a requirement. Laser layouts are shown, which are close to the desired layout of the incoherent laser.
Assessment of Process Capability Level in University XYZ Based on COBIT 2019
Authors: Atrinawati L H , Ramadhani E , Fiqar T P , Wiranti Y T , Abdullah A I N F , Saputra H M J , Tandirau D B 
Published: October 2022

Abstract
University XYZ is a state university in East Kalimantan, which established in 2014. All of its academic and non-academic activities are supported by information technology managed by the Information and Communication Technology Unit (ICT Unit). University XYZ implements an information technology governance system that aims to support the University XYZ business strategy and goals optimally. Information technology governance systems must be well managed to support business process activities in University XYZ. This study aims to evaluate the capability of information technology governance system using the COBIT 2019 framework. This study uses COBIT 2019 design tools and core model to evaluate University XYZ governance system, then provide assistance in determining a governance system that is adjusted to the COBIT 2019 capability level assessment. The result of this research is a recommendation of the core model or process and the capability level that must be implemented by University XYZ. This research will conclude that there are 11 Governance and Management Objectives that have a priority of more than 50%. This study conducts an evaluation phase of the core model or process so that recommendations are obtained for the development of information technology governance.
Detection of thermal anomalies on building façades using infrared thermography and supervised learning
Authors: Barahona Braulio , Buck Roger , Okaya Oskar , Schuetz Philipp 
Published: October 2022

Abstract
We propose a cost-effective, non-intrusive approach to assess the quality of the thermal isolation of the building stock in a given municipality or small city. Our prototype measurement system, mounted on a vehicle, acquires geotagged optical and infrared images from the street-side of the buildings. A basic approach to detect gross thermal anomalies, such as thermal bridges, via a binary classifier trained on 2000 carefully labeled infrared images is demonstrated. Thermal anomalies are identified with a precision score of around 89.2 % and 75.6 % recall on a test dataset of 1184 images infrared recorded in Hergiswil (NW). The enabled automated assessment helps to identify retrofitting targets and supports increasing the renovation rate.
Precision Machining by Composite EDM and Ultrasonic Method Technique
Authors: Liu Haiteng , Dong Yinghuai , Wang Yan , Li Zhanxin , Wang Litong 
Published: October 2022

Abstract
By studying the workpiece loading axial vibration mechanism of ultrasonic vibration electrical discharge machining, design the corresponding experiment. The experiment using 1 mm diameter precision machining of micro electrode to study the influence of the ultrasonic vibration electrical discharge machining efficiency and the influence on surface quality of machining by changing the presence of loaded ultrasonic conditions. By changing the load axial ultrasonic vibration amplitude of the workpiece to research on the influence of the machining efficiency. The results show that when processing t-he same depth, load axial vibration ultrasonic vibration electrical discharge machining, the machining time is short, machining efficiency will be high and surface quality is good. When the axial ultrasonic vibration amplitude of the changing load, the processing efficiency is the highest in a certain amplitude range.
Physical and Optical Properties of N,S-Codoped Carbon Quantum Dots Derived from Cigarette Butts for Mercury Ions Detection
Authors: Bahtiar Ayi , Saputra Rezki Nugraha , Setianto  
Published: October 2022

Abstract
The accumulation of mercury metal ion (Hg2+) in polluted river water is a problem in the emergence of various diseases in humans, because it is accumulated in drinks and food eaten every day. Therefore, the development of an accurate, sensitive, efficient and convenient method is very important to detect the content of metal mercury ions in polluted water. In this study, Carbon Quantum Dots (CQDs) was made simultaneously doped with Nitrogen (N) and Sulphur (S) atoms, so called N,-S codoped CQDs for the application of mercury metal ion sensors in polluted water. CQDs were prepared from wasted cigarette butts, which contain cellulose acetate as a source of carbon and nicotine as N-atoms source. The preparation of carbon solutions precursors were made by two ways of treatments namely put wasted cigarette filters/butts with water for 6-12 months (precursor I) and atomic S doping was done by adding sulfuric acid (H2SO4) with a volume-percentage of 0, 10% and 20% in water. The second treatment was carried out through the washing of wasted cigarette filter with sulfuric acid solution with a volume percentage of 20% sulfuric acid in water (precursor II). CQDs were prepared by use of hydrothermal method at 180°C for 6 hours. The synthesized solution was neutralized with sodium carbonate (Na2CO3). The solution was then centrifuged at 10,000 rpm for 15 minutes and filtered with a 0.22 µm microsyringe filter. The result of solution is a transparent and turns into blue when irradiated by a 365 nm UV laser, which indicates that CQDs has been formed. The FTIR results of the CQDs solution without S doping showed the presence of groups containing N atoms, namely at wave numbers 1417 cm-1 (C–N), 1540 cm-1 (CON–H), 1650 cm-1 (C=N/C=O). This means that N-doped CQDs have been formed. The C–S functional group was identified at a wave number of 1361 cm-1 in the S atom-doped CQDs. The HR-TEM images showed that the CQDs had a size less than 10 nm, and the distance between graphene crystals plane is in the range of 0.22-0.28 nm. The absorption spectra of the CQDs are ranging from 200 nm to 350 nm. S atom doping does not affect the absorbance spectrum significantly. The CQDs without S-atom doping has a PL spectrum from 300 nm to 800 nm with an emission peak of 417 nm. While, the N,-S codoped CQDs have a PL emission peak at 404 nm. The addition of doping from 10% to 20% did not change the peak emission wavelength. The CQDs sizes, optical properties and FTIR spectra of N, S-codoped CQDs show no significant difference when were prepared from precursor I and precursor II. This shows that the preparation of N, S co-doped CQDs can be produced much faster by washing cigarette butts directly with sulfuric acid prior to hydrothermal process as compared to precursor I which needs 6-12 months.
The Effects of Surfactant on the Stability of SiO2 nanofluid Prepared by Bead-milling Method
Authors: Raihanah Nadhifa , Solihudin  , Rukiah  
Published: October 2022

Abstract
Typical nanofluid containing metal or non-metallic nanoparticles dispersed in water with high surface energy. This condition causes aggregation and leads to the instability of the nanofluid dispersion in media. The inclusion of surfactants during the bead-milling process can increase the amount of dispersion stability of nanofluids with bigger particle sizes. The aim of this study was to determine the optimum surfactant in stabilizing SiO2 nanofluid and investigate the effect of surfactant addition during the bead-milling process since the effect of different types of surfactant in the bead mill remains unclear and varied. The sol-gel method was used to synthesize SiO2 particles from waterglass. The preparation of SiO2 nanofluid began with screening surfactants to determine the optimum surfactant concentration. Then, the SiO2 nanofluid was prepared by using a bead mill with the addition of the surfactant. The Zeta potential analysis and particle size analyzer (PSA) were used to visualize the dispersion stability of all the prepared nanofluid samples. The results showed that adding 0.1 weight percent of PEG 6000 as a nonionic surfactant increased the stability of the dispersion, producing an average particle distribution of 502.7 nm and a zeta potential of -48.9 mV. The average value of particle size can be reduced using bead mill down to 241.7 nm (aggregate size) with 39.8 nm primary particle resulting in -45 mV zeta potential.
Nonlinear polarization effect of functionalized graphene quantum dots
Authors: Setianto  , Joni I Made 
Published: October 2022

Abstract
Graphene quantum dots (GQDs) are nanoscale structures of graphene with quantum properties and edge effects that give photoluminescence properties. The effect of quantum confinement and differences in the nature of GQD structure makes its optical characteristics highly dependent on the size of the structure. This study explains a few exploratory semi-empirical calculations of nonlinear polarization properties of functionalized GQD (fGQD) three-dimensionally. Based on this, the calculation of the linear polarization and first hyperpolarization was performed by the finite field method, which is based on the expansion of the energy and dipole moment. As a result, the fGQD molecule dominantly has high optical nonlinear properties as indicated by the high β values (71 to 4488 a.u.). In general, the first hyperpolarizabilities have a linear relationship with the dipole moments. It was potentially used for the second harmonic imaging microscopy (SHIM) application.
Effect of SiO2 Content on Photocatalytic Activities of ZnO/Ag/SiO2 Nanocomposites Prepared by Spray Pyrolysis
Authors: Riwayati I. , Winardi S. , Madhania S. , Machmudah S. , Shimada M. , Kusdianto K. 
Published: October 2022

Abstract
Spray pyrolysis is a method for preparing nanocomposite materials in the gas phase. Due to the ease with which the temperature in the furnace can be controlled, this method can produce more uniform nanoparticle sizes. This method can be used to synthesize ZnO nanoparticles. Additionally, due to the photocatalytic properties of the synthesized particles, they are used to decompose synthetic dye waste. Due to electron-hole recombination, ZnO’s photocatalytic properties are limited. A doping process with various metals was used to enhance the photocatalytic properties of ZnO nanoparticles. Ag is one of these metals. The addition of Ag metal to ZnO nanoparticles results in the formation of nanocomposites with preferable photocatalytic properties. However, the addition of Ag results in the aggregation of the obtained particles. As a result, the ZnO particles must be trapped in a matrix (for example, SiO2) to inhibit particle growth. This research aims to determine the effect of the SiO2 composition on the characteristics and photocatalytic properties of ZnO/Ag/SiO2 nanocomposite synthesized via spray pyrolysis. SEM (Scanning Electron Microscope) analysis was used to determine the morphology of the nanocomposites, XRD (X-ray Diffraction) analysis was used to determine the purity and degree of crystallization, FTIR (Fourier-transform Infrared) analysis was used to determine the functional groups, and UV-Vis Spectrophotometer analysis was used to determine the photocatalytic characteristics. According to the analysis results, the optimal photocatalytic activity was obtained at 1% SiO2, with a degradation rate of up to 47% of methylene blue and a rate constant (k) of 0.0086 L/min under UV light irradiation.
Sales Expense Strategies for Competitive Pricing of Industrial Building System (IBS) Components
Authors: Aziz N. D. , Ishak M.F. , Omardin M. A. , Zulkiple A. , Mohamed Y. 
Published: October 2022

Abstract
The pandemic situation demand the construction player need to consider to re-evaluate architecture design. The issue of shortage of skilled workers due pandemic and method of traditional construction involving longer period and close contact among labours questioned in many countries. Therefore, industrial building system (IBS) or modular construction involves using pre-made modules created in a factory and brought to construction sites for assembly is one of method is recommended to overcome the issue during pandemic period. Nevertheless, The Malaysian IBS manufacturing player faced the difficult to achieve economies of scale due to higher capital cost and this problem caused by high operational cost in manufacturing. In marketing a product, sales expense is crucial to ensuring that a product can be sold in large quantities. In this study, sales expense variables among the established the cost control parameter required by IBS manufacturer that seeking for lower and stable market prices will be discuss in detail. To achieve the study objective. Thus, in this study, six (6) case studies from reliable data in the theme competitive pricing will be selected in this quantitative study. In a nutshell, this study explores China’s perception in term of competitive pricing of IBS components as per recommendation by many scholars. Using semi structure measurement instrument, the recorded data gained in this study later, transcribed using Atlas. Ti software. Also, the study is expected might help the Malaysian IBS manufacturer to realise the sales-related expenses strategies that need to be invested that might boost IBS demand in their enterprises.
In vitro reconstitution of the hormone-responsive testicular organoids from murine primary testicular cells
Authors: Yang Yan , Huang Rufei , Cao Zhen , Ma Siying , Chen Derong , Wang Zhaoyang , Feng Yuqing , Lei Yaling , Zhang Qihao , Huang Yadong 
Published: October 2022

Abstract
Increasing rates of male infertility require more experimental models to understand the mechanisms underlying male infertility. In vitro organoids hold unprecedented promise for this purpose; however, the development of organoids with tissue architecture similar to that of the testis in vivo remains a challenge. Here, we generated testicular organoids derived from testicular cells by combining a hanging drop culture and a rotation culture system. Our results indicated that testicular cells could self-assemble into spheroid organoids with tubule-like structures in hanging drop culture. The organoids can subsequently be cultured and maintained in a rotation culture system. These established organoids have gene expression profiles similar to those of adult testis tissue, produce testosterone with preserved gonadotropin responsiveness, and exhibit sensitivity to reproductive toxicants. More importantly, each testicular organoid can be generated from only 2000 cells, and they maintain their proliferative ability after freezing and thawing. These features make it possible to obtain fresh primary testis cells from testicular biopsies taken from patients or endangered wild species, and to build individual-specific biobanks. These findings will help enable the exploration of self-organization process of testicular cells and provide an experimental model for reproductive biology research, pharmacotoxicology testing, and regenerative medicine.
Deep Neural Networks for Fine-Grained Surveillance of Overdose Mortality
Authors: Ward Patrick J , Young April M , Slavova Svetla , Liford Madison , Daniels Lara , Lucas Ripley , Kavuluru Ramakanth 
Published: October 2022

Abstract
Surveillance of drug overdose deaths relies on death certificates for identification of the substances that caused death. Drugs and drug classes can be identified through the International Classification of Diseases, Tenth Revision (ICD-10), codes present on death certificates. However, ICD-10 codes do not always provide high levels of specificity in drug identification. To achieve more fine-grained identification of substances on death certificate, the free-text cause-of-death section, completed by the medical certifier, must be analyzed. Current methods for analyzing free-text death certificates rely solely on lookup tables for identifying specific substances, which must be frequently updated and maintained. To improve identification of drugs on death certificates, a deep-learning named-entity recognition model was developed, utilizing data from the Kentucky Drug Overdose Fatality Surveillance System (2014–2019), which achieved an F1-score of 99.13%. This model can identify new drug misspellings and novel substances that are not present on current surveillance lookup tables, enhancing the surveillance of drug overdose deaths.
Heart rate control and haemodynamic improvement with ivabradine in cardiogenic shock patient on mechanical circulatory support
Authors: Colombo Costanza N J , Dammassa Valentino , Klersy Catherine , Camporotondo Rita , Pellegrini Carlo , Mojoli Francesco , Tavazzi Guido 
Published: October 2022

Abstract

Aims
Cardiogenic shock (CS) is a life-threatening condition due to primary cardiac dysfunction. First-line therapy involves drug administration (including inotropes and/or vasopressors) up to mechanical circulatory support. Tachycardia is a frequent compensatory mechanism in response to hypotension and low cardiac output or a side effect related to inotropic drugs. Ivabradine selectively acts on the IKf channel in the sinoatrial node to reduce sinus heart rate without affecting inotropism. Its use, in small non-randomized series of patients with CS without mechanical circulatory support, was safe and well tolerated.

Methods and results
We present the use of ivabradine in six patients with CS undertaking veno-arterial extracorporeal membrane oxygenation (VA-ECMO) and a matched cohort of selected patients with similar features who did not receive ivabradine. Data regarding haemodynamic and echocardiographic monitoring, oxygenation, renal function, mechanical circulatory support, inotropes, and vasopressors doses were collected before (t0), at 12 (t1), 24 (t2), and 48 (t3) h after ivabradine administration. Ivabradine administration led to a significant heart rate reduction of 20.83 [95% confidence interval (CI) −27.2 to −14.4] b.p.m. (&lt;0.01). Echo-derived left ventricular native stroke volume (SV) significantly increased by +7.83 (95% CI 4.74–10.93) mL (P &lt; 0.001) with a parallel reduction of VA-ECMO support [−170 (95% CI −225.05 to −114.95)]. Noradrenaline was down-titrated over the observation period in all patients (P = 0.016).

Conclusion
A significant reduction in heart rate was observed after ivabradine administration. This was associated with a native ventricular SV improvement allowing the reduction of extracorporeal flow support and vasopressors administration.