bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of 1450-ppm Fluoride-containing Toothpastes Associated with Boosters on the Enamel Remineralization and Surface Roughness after Cariogenic Challenge
Authors: Tomaz Pedro Luiz Santos , Sousa Letícia Almeida de , Aguiar Kayanne Freire de , Oliveira Thales de Sá , Matochek Marcelo Henrick Maia , Polassi Mackeler Ramos , D’Alpino Paulo Henrique Perlatti 
Published: March 2020

Abstract
Objectives This in vitro study investigated the remineralization potential of 1450 ppm, fluoride-containing toothpastes containing different active remineralization agents after cariogenic challenge with pH cycling. The enamel surface roughness after brushing and the chemical and physical characteristics of the toothpastes tested were also analyzed.
Materials and Methods Fifty-six bovine enamel blocks were obtained (4 × 4 × 6 mm) and divided into three thirds: intact (untreated), demineralized (artificial caries lesion), and treated (caries lesion, pH cycling, and brushing with dentifrices). Seven commercially available fluoride toothpastes (1450 ppm F): three with anti-erosion claims (Candida Professional [CPP], Colgate Total 12 Daily Repair [CDR], Regenerate Enamel Science [RES]); three with desensitizing claims (Bianco Pro Clinical [BPP], Elmex Sensitive [ESS], and Regenerador Diário DentalClean [RDC]); and one standard regular-fluoride toothpaste Colgate Total 12 (CTT) were selected. During pH cycling (demineralization 6 h/remineralization 18 h) for 7 days, the treated third was brushed with the different dentifrices for 10 minutes in a brushing machine before immersion in a remineralizing solution. The Knoop hardness (25 g, 10 second of the surface, and longitudinal section were then evaluated at eight depths (10 to 330 μm). Mean and percentage of surface hardness recovery (% SHR) were calculated. Surface enamel roughness (Ra) was also evaluated. The pH, %weight of particles, zeta potential, and polydispersity index of toothpaste slurries were also evaluated.
Statistical Analysis Data were statistically analyzed (ANOVA/Tukey, 5%).
Results The %SHR of CPP was significantly lower than the others (p < 0.05). The enamel subsurface was more effectively remineralized when treated with BPP, ESS, and RDC. The surface roughness was higher when the demineralized third was treated with CTT, RDC, and RES and after the cariogenic challenge (p < 0.05). For some of the products tested, there was no relationship between surface remineralization and subsurface remineralization. Although toothpastes CPP and RDC present the lowest %SHR means, both products effectively remineralize within the subsurface carious lesion. Regression analysis demonstrated no strong correlations of the enamel surface roughness with the chemical and physical parameters.
Conclusions Most but not all the fluoride toothpastes were able to remineralize the enamel surface. No specific chemical or physical parameter alone correlated with the surface roughness.
Temperature estimation in a spatially inhomogeneous flame by diode laser absorption spectroscopy
Authors: Liger V.V. , Mironenko V.R. , Kuritsyn Yu.A. , Bolshov M.A. 
Published: March 2020

Abstract
A two-temperature (2T) model is proposed for estimating the temperature of a spatially inhomogeneous hot zone using single-beam diode laser absorption spectrometry. The proposed algorithm is based on fitting experimental absorption spectra by a linear combination of two database-simulated single-temperature spectra with different temperatures. The model efficiency is experimentally demonstrated when determining the temperature in different flame zones of a Wolfgard – Parker slot burner. The proposed 2T algorithm is used to find the maximum and minimum temperatures in different flame sections, which are compared with local temperatures in the same flame zones measured by the method of coherent anti-Stokes Raman scattering (CARS). It is shown that the maximum temperatures determined by the proposed 2T algorithm are in good agreement with CARS data in flame zones where high-temperature regions prevail. A good agreement between the minimum temperatures obtained by these two methods is also observed for predominantly cold zones.
Quantum dot polarisation converter in an optomechanical cavity
Authors: Tsukanov A.V. , Kateev I.Yu. 
Published: March 2020

AbstractWe propose a scheme of a quantum photon polarisation converter, which is based on controlled electron – photon – phonon transitions in a hybrid semiconductor nanostructure. This structure consists of a GaAs/InAs quantum dot (QD) that has a parallelepiped shape and contains a single electron, and an optomechanical microcavity (MC) based on a photonic crystal (PC) that supports two orthogonally polarised photonic modes and one mechanical (phonon) mode. Within the framework of the microscopic theory, the QD and MC performance characteristics are found. Populations of states of the system as functions of time and its parameters are calculated. The principal possibility of photon polarisation conversion using transitions in a five-level resonance scheme for coherent (single-photon) and steady-state (subphoton) regimes is shown. The MC optical and mechanical spectra are simulated, and the PC structure parameters are selected to ensure the efficient operation of the converter.
Nanodiamonds with SiV colour centres for quantum technologies
Authors: Zeleneev A.I. , Bolshedvorskii S.V. , Soshenko V.V. , Rubinas O.R. , Garanina A.S. , Lyapin S.G. , Agafonov V.N. , Uzbekov R.E. , Kudryavtsev O.S. , Sorokin V.N. , Smolyaninov A.N. , Davydov V.A. , Akimov A.V. 
Published: March 2020

Abstract
Properties of silicon-vacancy (SiV) colour centres in ultra-nanosize diamonds are studied. Nanodiamonds are obtained at a high temperature and pressure, which induced transformations in mixtures of organic and hetero-organic compounds without metal-catalysts. The size distribution of grown nanodiamonds is determined by the methods of transmission electron microscopy and atomic-force microscopy, as well as by using the model of phonon spatial localisation. In addition, Raman spectra of various nanodiamonds and luminescence properties of SiV-centres are investigated.
457-nm radiation source based on a diode laser for precision spectroscopy of magnesium atoms
Authors: Goncharov A.N. , Baraulya V.I. , Bonert A.E. , Tropnikov M.A. 
Published: March 2020

Abstract
We report on the development of a highly stable source of 457-nm radiation based on a diode laser and a tapered amplifier operating in a double-pass scheme. The diode laser frequency was stabilised by a high-Q reference Fabry – Perot interferometer and doubled in a PPSLT nonlinear crystal placed in an enhancement cavity. At a maximum output power of 200 mW at a wavelength of 457 nm, the laser linewidth was less than 5 kHz. The radiation source operation was demonstrated in experiments on precision spectroscopy of cold magnesium atoms in a magneto-optical trap.
Three-body Förster resonance of a new type in Rydberg atoms
Authors: Cheinet P. , Pham K.-L , Pillet P. , Beterov I.I. , Ashkarin I.N. , Tretyakov D.B. , Yakshina E.A. , Entin V.M. , Ryabtsev I.I. 
Published: March 2020

Abstract
The three-body Förster resonances 3 × nP3/2(|M|) →nS1/2 + (n + 1)S1/2 + nP3/2(|M*|), controlled by a constant electric field, were realised earlier by the authors in an ensemble of several cold Rydberg Rb atoms. One of the drawbacks of such resonances for potential application in three-qubit quantum gates is the proximity of the two-body Förster resonance 2 × nP3/2 → nS1/2 + (n + 1)S1/2, as well as the possibility of their implementation only for states with values of the principal quantum numbers n ⩽38. A three-body resonance of a new type, 3 × nP3/2 → nS1/2 + (n + 1)S1/2 + nP1/2, which can be realised for arbitrary n, is proposed and analysed. Its specific feature is also that the third atom transits into a state with a different total angular momentum J = 1/2, which has no Stark structure, so that the two-body resonance is completely absent. Numerical calculations showed that for not too strong interaction, it is possible to observe coherent three-body oscillations of the populations of collective states, which is of interest for developing new schemes of three-qubit quantum gates controlled by an electric field.
Frequency transfer via an ultra-stable free-space link
Authors: Kudeyarov K.S. , Kryuchkov D.S. , Vishnyakova G.A. , Zhadnov N.O. , Khabarova K.Yu. , Kolachevsky N.N. 
Published: March 2020

Abstract
An optical frequency transfer at a wavelength of 1542 nm via an ultra-stable 5-m free-space link with active compensation of the phase noise caused by atmospheric fluctuations is demonstrated. The link-induced phase noise and its contribution to the frequency transfer instability are investigated. It is shown that, with the phase compensation system switched on, the link contribution to the relative transfer instability in terms of Allan deviation reaches 1.7 × 10−19 for a 5000-s averaging time.
Degradation of the contrast of a short light pulse in a CPA system
Authors: Masalov A.V. , Chvykov V.V. 
Published: March 2020

Abstract
We have calculated the effect of four-wave mixing of the main radiation pulse with the background radiation components on the value of the output radiation contrast in a chirped pulse amplification system of petawatt laser facilities. Formulae are presented that make it possible to quantify the contributions of two mechanisms, i.e. Kerr nonlinearity of the refractive index of the amplifying medium and gain saturation. For typical values of the nonlinear refractive index, both contributions are comparable. The possibility of mutual quenching of nonlinear contributions is noted. The influence of spectral filtering of radiation on the output pulse contrast is considered.
Physiochemical and biological evaluation of SLM-manufactured Ti-10Ta-2Nb-2Zr alloy for biomedical implant applications
Authors: Zhenhuan Wu , Yu Dai , Junsi Luo , Xiaowei Ji , Zongyu Xie , Li Li , Xiaoli Xie 
Published: March 2020

Abstract
Titanium alloys, such as Ti-10Ta-2Nb-2Zr (TTNZ), are promising biomaterials due to their excellent biocompatibility and low Young’s modulus. The TTNZ samples herein were manufactured by selective laser melting and the novel material was evaluated as a dental implant in vitro and in vivo. The microstructure, mechanical properties, electrochemical behaviour, cytotoxicity, haemocompatibility and osteogenic differentiation were systematically investigated. Based on the tensile test results, the as-printed TTNZ samples had an elongation of 20.23% ± 1.95%, an ultimate tensile strength of 646.61 ± 24.96 MPa and a Young’s modulus of 23.72 ± 1.18 GPa. According to the biocompatible value, the as-printed TTNZ sample exhibited no cell cytotoxicity and it showed even better cell adhesion ability than that of the as-printed Ti-6Al-4 V and wrought Ti-6Al-4 V samples. The haemolysis percentage of the as-printed TTNZ sample was 0.629% ± 0.363%. Moreover, the as-printed TTNZ sample facilitated protein adsorption and osteogenic differentiation of human osteoblast-like (MG-63) cells in vitro. The in vivo data also demonstrated the histocompatibility of the as-printed TTNZ. In summary, the as-printed TTNZ developed in this study demonstrated good biocompatibility, low stress shielding, excellent ductility and great osteogenic differentiation. These results indicated that as-printed TTNZ alloys can be promising for end-use human biomedical applications.
The development of safety plan to improve OHS (occupational health and safety) performance for construction of irrigation channel based on WBS (work breakdown structure)
Authors: Tamara Ayasha , Latief Yusuf , Machfudiyanto Rossy Armyn 
Published: March 2020

Abstract
Construction has now become an industry with the highest risk of work accidents. The risk of workplace accidents in construction can be caused by several factors, such as the work method, workplace, environment, human factors and poor safety management system. One of the examples of safety management system that can reduce the level of work accidents in construction is safety plan. The purpose of this research is to identify the potential hazards of the work components in construction of channel irrigation WBS (work breakdown structure) that have been standardized, and to develop a safety plan based on the risks identified in the construction of channel irrigation WBS in order to improve occupational health and safety performance for channel irrigation construction. The research methods used were archive analysis with questionnaire and case studies. The results of this study reported potentially hazardous risk sources on channel irrigation construction projects, therefore preventive actions and corrective actions are to be made later for the development of a safety plan as a form of preventing the risk of workplace accidents to improve OHS performance for construction of channel irrigation.
Development of safety plan to improve OHS (occupational health and safety) performance for construction of dam (supporting infrastructure) based on WBS (work breakdown structure)
Authors: Wardahni Nurul Inayah , Latief Yusuf , Machfudiyanto Rossy Armyn 
Published: March 2020

Abstract
Dam is an infrastructure that has many benefits for human survival such as a water reservoir which is the solution to the current crisis of clean water in Indonesia. The clean water crisis was anticipated by the government by constructing dam in critical areas with a target of 29 dams to be completed by 2019. But it is not uncommon for work accidents to occur in dam construction that have an impact starting from minor injuries to fatal ones such as death. So that, it is necessary to identify and analyse potential hazards early to prevent such accidents. This research aims to develop a safety plan for preparatory work of dam construction and cofferdam construction by identifying potential hazards that may occur in each work package by reviewing work methods, work activities, and WBS-based dam construction that has been standardized using the qualitative approach method. From the research, there are 20 risk sources of OHS that have the highest potential hazard in preparation work and cofferdam which were dominated by human resources and tools. Furthermore, safety plan had been developed based on the OHS risk sources obtained from the WBS for preparatory work and cofferdam.
Standard operational procedure (SOP) auditing process in integrated management system to improve the efficiency of organizational performance
Authors: Khairunnisa  , Latief Yusuf , Riantini Leni Sagita 
Published: March 2020

Abstract
Empirical research on how organizations carry out audit processes in management systems is very little. Organizations have difficulties in implementing integration, such as lack resources, problems related to organizational culture, differences in general elements of specific standards and requirements. Implementation of audit integration can provide many benefits so that based on existing problems in the implementation of audits integration, the standard operating procedure is required as a consistency in the level of performance or certain conditions. The purpose of this study is to find out the form of organization, Job Description, activities, inputs, outputs, communication channels that will be used as stages to make the Standard Operating Procedure audit process in an integrated management system so that the SOP is expected to improve efficiency in organizational performance. The research method used in this study is Delphi’s method and questionnaire survey. The product that be produced in this study is the Standard Operating Procedures Audit Process in an Integrated Management System to Improve Organizational Performance Efficiency.
Analysis of biodegradation level and sludge stabilization with static and dynamic respiration index method
Authors: Rendy  , Kristanto G A 
Published: March 2020

Abstract
The residue must be processed to dispose or utilize the residue of the installation processing unit safely. To ensure no environmental contamination occurs, the residual/sludge must be in stable condition. The measurement of the respirometry index values, both static (SRI) and dynamic (DRI), could be used to measure the stability. The stability indicators of respirometry measure the oxygen needed to break down biodegradable organic matters. The purpose of this study is to identify the characteristics and analyze the stability of sludge/digested samples from several places based on water content approach, volatile solids, C/N ratio, SRI, and DRI values. The objective is to develop recommendations for continued processing of unstable sludge/mud/digestat. Further processing uses composting of Takakura baskets for 14 days with coconut shell bulking agents.
Objective identification from every success factors or clause of the integration process management system to increase the performance efficiency of state-owned construction services organization in Indonesia
Authors: Fadhillah Muhammad Rifandy , Riantini Leni Sagita , Latief Yusuf 
Published: March 2020

Abstract
State-Owned Construction Services Organization in Indonesia basically aims to improve the welfare and prosperity of the people. The background of the establishment of the State-Owned Company can be carried out with good performance from within the State-Owned Company body itself. So that State-Owned Company can realize their goals and become the driving force of the national economy in Indonesia to be able to improve the welfare and prosperity of the people. A State-Owned Companies is declared successful if it can increase people’s prosperity which begins by improving the performance of the company. From the explanation above, a state-owned company is able to increase people’s prosperity by increasing the performance of its company by identifying the goals and objectives of each success factor or the High Level Structure clauses in the Integration Process Management System, then evaluating the company’s performance through the outputs which are the objectives. This research method was carried out by means of interview surveys to experts, respondents and also literature study. The integration of management systems is ultimately seen as a very effective tool in optimizing the functions of the quality, safety, health, and environmental management system procedures in carrying out construction projects by a construction service organization. Based on the results of this study, it was found that the most influential objective for the efficiency of organizational performance came from the leadership clause
Durability and strength improvement of clayshale using various stabilized materials
Authors: Faray  , Rahayu Wiwik 
Published: March 2020

Abstract
In Indonesia, the study of clayshale has begun to be widely discussed. Clayshale is well known as a degradable material. The process of degradability in clayshale shows the weakening of the shear strength. This clayshale characteristic leads to several failures in the geotechnical design. To avoid degradability, soil stabilization testing was carried out by using cement, lime and rice husk ash. In the soil stabilization study, the use of cement and lime is already common and effective for some type of problematic soil, but the cost of material production is expensive and not environmentally friendly. Rice husk ash as agricultural waste material has the potential as a stabilizing material because it is availability and reaction ability with lime as known pozzolanic reaction. From the test results, each mixture has different response and potency. Cement has better resistance to wetting and drying with a significant increase in unconfined compressive strength. Whereas the lime itself did not significantly increase durability and unconfined compressive strength, but the effect of rice husk ash to the soil-lime mixture increasing durability despite the reduction in unconfined compressive strength.
Analysis of classification hydrologic soil group distribution based on infiltration rate of horton method in the upper Ciliwung watershed
Authors: Sartika Firda Aulia , Sutjiningsih Dwita , Anggraheni Evi 
Published: March 2020

Abstract
Runoff coefficient or Curve Number (CN) is a parameter value needed to describe runoff in accordance with the intended land use. In determining CN values, it is necessary to take account the Hydrologic Soil Group. The Hydrologic Soil Group (HSG) consists of 4 groups, which are: A, B, C, and D. In order to classify the appropriate HSG, several methods can be used, namely: soil properties, soil maps, or minimum infiltration rates. In this research, an HSG classification distribution analysis will be carried out based on the infiltration rate obtained from actual conditions found during observation in the research site. This research was conducted in 13 locations, situated in the Upper Ciliwung watershed. The division of 13 locations is based on the distribution map of the HSG according to the Geological Information Agency and also the map of the distribution of Upper Ciliwung sub-bases. In its classification, each HSG has a different infiltration rate value. In this study, an analysis of the distribution of HSG classification based on the infiltration rate was obtained from direct observation on the research site. The study was conducted using a double-ring infiltrometer. The data obtained from the study were then processed using parameter estimation and the Horton Method to obtain the Horton infiltration rate. When the infiltration rate value is known, the corresponding HSG can then be determined for the soil at that particular location. With Inverse Distance Weighted in ArcMap, a map of the spread of infiltration rate and classification of HSG will be obtained in the Upper Ciliwung watershed. The infiltration rate obtained in the Upper Ciliwung watershed ranges from 0.15-12.6 cm/hour. The distribution of HSG is also found in the Upper Ciliwung watershed, consisting of groups A, B, and C.
Traffic management for MRT construction phase II bundaran HI – kota
Authors: Prahara Eduardi , Pionar Rico Giyar , Suhendra Andryan 
Published: March 2020

Abstract
MRT Construction Phase II, which is planned to be carried out in 2020, will cross Sarina, Harmoni, Glodok, Sawah Besar, Mangga Besar, and Kota Stations. The impact of this project during construction makes the road narrowing and causes longer queue length and delay of Harmoni Intersection, and vehicle travel time passes the site of construction. This research aims to determine traffic management and modeling using VISSIM, Indonesian Highway Capacity Manual (MKJI) 1997, and Indonesian Highway Capacity Guidance (PKJI) 2014 on Harmony Central. The value of queue length, delay, and travel time obtained from the existing condition will be used to estimate the traffic performance during construction. The increased queue length, delay, and travel time along the construction site will cause congestion to the previous intersection. The diversion plan needs to be done before the vehicle meets the busway flow that will be diverted caused by the relocation of the terminal to reduce the density of vehicles going into the Signalized Intersection Harmoni.