bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vibrational effects in the photo-ion yield spectrum of the SiH2
+ molecular ion following 2p inner-shell excitation
Authors: Kennedy E T , Mosnier J P , Van Kampen P , Bizau J M , Cubaynes D , Guilbaud S , Carniato S , Puglisi A , Sisourat N 
Published: August 2019

Abstract
We report on complementary theoretical and laboratory investigations of the 2p ion yield cross sections for the molecular-ion series SiHn
+ (n = 1, 2, 3), in the 95-108 eV photon energy range, below the L-shell threshold. The experiments used an electron cyclotron resonance (ECR) plasma molecular-ion source coupled with monochromatised synchrotron radiation in a merged-beam configuration. The experimental spectra are compared with total photoabsorption cross-sectional profiles calculated using an ab initio configuration interaction method inclusive of spin-orbit coupling and the vibrational dynamics. The experimental results show vibrationally resolved resonances for SiH2
+ in the 98-102 eV range. The calculations indicate twenty four core-excited states below the energy of 102 eV, of which only four contribute significantly to the observed spectrum. These states correspond to the excitation of an atomic-like 2p electron to the SiH2
+ (5a1) valence orbital.
Quantitative analysis on tungsten spectra of W6+ to W45+ ions
Authors: Morita S. , Dong C.F. , Kato D. , Liu Y. , Zhang L. , Cui Z.Y. , Goto M. , Kawamoto Y. , Murakami I. , Oishi T. 
Published: August 2019

Abstract
Tungsten ion densities are determined by measuring radial profiles of line emissions in LHD. Zn-(W44+) and Cu-like (W45+) ion densities are determined from line emission at 60.9 Å and 127.0 Å, respectively. Ion densities of W24+, W25+ and W26+ are also determined from tungsten pseudo-continuum (a so-called unresolved transition array (UTA)) at 29-33 Å. Observations of magnetic dipole (M1) forbidden lines at 3377Å enable evaluation of the ion density of W27+. In EAST tokamak the tungsten concentration is estimated by a combination of the UTA and total radiation loss. In HL-2A the tungsten influx is evaluated from line emission of W6+ ions at 216.2 Å and 261.4 Å, which are measured during the tungsten reappearance phase after tungsten laser blow-off. All these results demonstrate a good approach towards quantitative tungsten analysis.
A new analysis of spectral line shapes in white dwarf atmospheres
Authors: Rosato J , Kieu N , Meireni M , Koubiti M , Marandet Y , Stamm R , Kovačević-Dojčinović J , Dimitrijević M S , Č Popović L , Simić Z 
Published: August 2019

Abstract
We present an analysis of hydrogen Balmer line shapes observed in two white dwarf spectra. One spectrum presents singlet lines while the second one presents lines with a triplet structure. The latter is a feature of the presence of a strong magnetic field. Using both Stark and Zeeman effects, we infer the density and the magnetic field. Our line shape calculations employ a computer simulation technique. The radiative transfer is accounted for through a onedimensional slab model.
Space integrated, time resolved studies of the formation of aluminium (II) oxide in laser produced plasmas
Authors: Kelly T J , Walsh N , Costello J T 
Published: August 2019

Abstract
We present time resolved, spatially integrated spectra of aluminium II oxide formed from the condensation of an aluminium laser plasma in air. The spectra show a revival of the emission from aluminium oxide molecules at 35µs after the plasma ignition. Thermodynamic calculations, together with temperature measurements, indicates that as the plasma cools, the aluminium oxide molecule forms through two different channels, explaining its increased presence.
The Stark Broadening Parameters of the Nitrogen HF RF-CCPs
Authors: Erözbek Güngör Ü 
Published: August 2019

Abstract
This paper presents the experimental Stark-broadening and shifting analysis of 40.68 MHz nitrogen RF-CCPs. The non-thermal plasmas were generated in a cylindrical parallel plate plasma reactor under 0.2-0.8 Torr and 50-200 Watt. The physical and chemical spectral analyses of the system were performed by using the OES method. Many N I and N II lines were detected in the UV-Vis-NIR region. The diagnostic measurements of the plasmas were done according to the Saha relation and the Boltzmann plot method, under the LTE assumption. The calculated Te, Tgas, ne and n0 take values in the range of (10748 ± 742 – 16144 ± 653) K, (690 ± 82 – 833 ± 22) K, (0.598 ± 0.024 – 2.87 ± 0.03) × 1014 cm−3 and (2.32 ± 0.06 – 11.37 ± 1.44) × 1015 cm−3, respectively. The normalized Stark-broadening parameters (ωe and de) of the vacuum visible N II multiplets (653.445, 659.749 and 661.545 nm) were determined for 10.000 and 15.000 K.
Contribution from dimers to the collision-induced absorption spectra in an Ar–Kr gas mixture
Authors: Fakhardji Wissam , El-Kader M.S.A. , Haskopoulos Anastasios , Maroulis George , Gustafsson Magnus 
Published: August 2019

Abstract
We have developed an empirical Barker, Fisher and Watts (BFW) interatomic potential for the Ar–Kr pair along with a dipole moment computed from first principles using Møller–Plesset perturbation theory to second order (MP2). Using these results, we performed molecular dynamics calculations to compute the Ar–Kr collision induced absorption (CIA) spectrum at different temperatures. By comparing them to other calculations using a two body interaction treated with quantum mechanics, we have shown that the difference is due to the dimer’s contribution which grows in importance as the temperature is lowered.
Effect of Wave Collapse on Lyman and Balmer lines
Authors: Hannachi I , Meireni M , Rosato J , Stamm R , Marandet Y 
Published: August 2019

Abstract
The nonlinear coupling of Langmuir, ion sound and electromagnetic waves can create wave collapse conditions in a plasma, and modify the line shapes emitted by hydrogen atoms. Such conditions may appear in the presence of a strong source of energy, and create numerous regions where wave packets localize and the plasma density is decreased. We use a model of envelope solitons for the electric field acting on the emitter, and calculate the dipole autocorrelation function and the line shape with a numerical simulation. We investigate the role of the frequency of wave packets, and propose an approach retaining a dispersion relation ω(k).
Polarization measurement of hydrogen Lyman-α in the Large Helical Device
Authors: Ramaiya N , Goto M , Oishi T , Morita S 
Published: August 2019

Abstract
We have investigated the polarization of the Lyman-α line due to anisotropic electron collisions in the Large Helical Device (LHD). Optical components provided by the CLASP (Chromospheric Lyman-αlpha Spectro-Polarimeter) project [Kano R 2017 ApJL 839 L10] team have been incorporated into a VUV spectrometer so that linearly polarized light spectra at different angles can be obtained sequentially. The steady-state phase of an ECH (electron cyclotron heating) discharge has been analyzed, and it is confirmed that the Lyman-α line is polarized. From a temporal variation analysis of the intensity, integrated over the line profile, the polarization degree is evaluated to be 3.4%. A simple theoretical model calculation shows that this polarization degree can be explained by approximately 10% anisotropy in the electron temperature between the parallel and perpendicular directions with respect to the magnetic field.
Meeting GHG reduction targets requires accounting for all forest sector emissions
Authors: Hudiburg Tara W , Law Beverly E , Moomaw William R , Harmon Mark E , Stenzel Jeffrey E 
Published: August 2019

Abstract
Atmospheric greenhouse gases (GHGs) must be reduced to avoid an unsustainable climate. Because carbon dioxide is removed from the atmosphere and sequestered in forests and wood products, mitigation strategies to sustain and increase forest carbon sequestration are being developed. These strategies require full accounting of forest sector GHG budgets. Here, we describe a rigorous approach using over one million observations from forest inventory data and a regionally calibrated life-cycle assessment for calculating cradle-to-grave forest sector emissions and sequestration. We find that Western US forests are net sinks because there is a positive net balance of forest carbon uptake exceeding losses due to harvesting, wood product use, and combustion by wildfire. However, over 100 years of wood product usage is reducing the potential annual sink by an average of 21%, suggesting forest carbon storage can become more effective in climate mitigation through reduction in harvest, longer rotations, or more efficient wood product usage. Of the ∼10 700 million metric tonnes of carbon dioxide equivalents removed from west coast forests since 1900, 81% of it has been returned to the atmosphere or deposited in landfills. Moreover, state and federal reporting have erroneously excluded some product-related emissions, resulting in 25%–55% underestimation of state total CO2 emissions. For states seeking to reach GHG reduction mandates by 2030, it is important that state CO2 budgets are effectively determined or claimed reductions will be insufficient to mitigate climate change.
Community behavior analysis of electricity consumption in rural areas (a case study of Batang Regency)
Authors: Rarasati A D , Ardian M D , Setiawan E A , Mohammad I H 
Published: August 2019

Abstract
The need for electricity linearly increases despite the lack of accessibility to electric power, especially in rural or downtown area. Since electricity has several positive impacts such as supporting human activities, increasing competitiveness and improving the economy, lack of access to it could lead to an area being underdeveloped. The government expected that procuring a 35,000 Mega Watt generator would overcome this problem. However, from the consumer’s perspective, it is important to avoid over or under design during the infrastructure development lead. This study aims to analyze the energy reserve needs from the villagers’ own perspectives by determining peak loads, electricity consumption, and the reliability of the power distribution systems. The research took place in Batang Regency, Central Java, Indonesia. It used interviews to deeply explore consumer behavior in energy consumption presented in commonly demanded factors, diversity factors, SAIDI and SAIFI values, and the respondent’s understanding of energy saving. The results of this study revealed some unique characteristic behaviors of Batang electricity consumers based on their locations.
Monitoring of AH-11A fused-silica drift in RCM-LIPI and its implementation
Authors: Khairiyati L , Yayienda N F , Azzumar M 
Published: August 2019

Abstract
We have been monitoring our standard capacitors of AH-1100 fused-silica drift for 8 years to maintain and obtain the actual values of them. One of the advantages of the standard capacitors is to be used as a reference standard for ensuring the performance of an AC high voltage capacitive divider, that is commonly used to assess a voltage level on a power distribution from plants to end-users. This paper describes the monitoring of AH-1100 and its validation performed by comparing to the calibration results of KRISS, the national metrology institute of The Republic of Korea. The AH-1100 drifts is found to be less than 0.0052μF/F/year, and the comparison results show a good agreement, making the monitoring results have been validated. Moreover, the implementation has been performed with expanded uncertainties of 1.7 fF for 10 pF and about 22 fF for 100 pF.
Electromagnetic-wave sintering of alumina ceramics from nano-sized particles: possible material for high-pressure cell for millimeter-wave electron spin resonance
Authors: Nawate T , Yamamoto Y , Kanie Y , Mitsudo S , Fujii Y , Sakurai T 
Published: August 2019

Abstract
Electromagnetic-wave sintering of alumina ceramics using 28 GHz gyrotron has been performed aiming for a high fracture toughness value in order for use as pistons for pressure cells of high-frequency electron spin resonance (ESR) measurements. We have tried to improve the fracture toughness by using nano-sized alumina powder (140 nm in average particle size) having smaller particle size than our previous work (400 nm in average particle size). Rapid densification was observed around the sintering temperature of 1200 °C. We obtained the relative density over 99 % above 1400 °C. It was found that alumina ceramics made in this work at sintering temperatures have smaller grain size and higher density simultaneously as compared to the previous work. These results suggest that alumina ceramics made from powder of smaller particle size sintered by electromagnetic-wave sintering possibly have high fracture toughness which can be used as materials for the pressure cell for ESR.
Startup of expanded granular sludge bed reactor treating undiluted palm oil mill effluent
Authors: Ahmad A , Amri I , Fitrah R 
Published: August 2019

Abstract
A lab-scale Expanded Granular Sludge Bed (EGSB) Reactor was used to the treatment of undiluted Palm Oil Mill Effluent (POME) with the COD mean value of 53,333.33 mg/l. The startup was done at a mesophilic temperature of 35 ± 2°C for 12 days with two days Hydraulic Retention Time (HRT) as a pre-study of enhanced biogas production by mesophilic and thermophilic anaerobic co-digestion of POME with Empty Fruit Bunches (EFB) in EGSB Reactor. The steady state was achieved at 8th to 12th day of continuous operation. The effluent COD at steady state was vary from 10,000 to 11,500 mg/l, COD removal 78.44 – 81.25 %, Methane content was 43.89 % and total biogas volume achieved was 2.760 ml (0.1486 – 0.1503 m3 CH4/kg COD removed). There were several operational problems met in the experiment and corresponding countermeasures were also discussed.
The effect of different α and β gable on stainless steel and TMA segmental T-loop on the resulting force – an in vitro study
Authors: Laviana A 
Published: August 2019

Abstract
Adding more angle to the segmental T-Loop gable can affect the amount of force created to retract the canine on an orthodontic treatment with extraction. In-vitro laboratory experimental design, performed at the Chemistry Laboratory of Faculty of Science, ITB. The samples are 60 segmental T-loop springs with α and β angle of 0°–0°; 0°–45°; 45°–0°; 22.5°–22.5°; 15°–30°; 30°–15°. Force was measured using autograph with retraction distance of 1, 2, and 3 mm, then analyzed using ANOVA statistics analysis with a factorial design of 2x3x6 and 5 replications for each cell. The results of the posthoc Student Newman Keuls and Tukey test show that the added angle to the α and β gables of SS and TMA T-loop will add more resulting force along with the increase of retraction distance. The added angle to the α and β gables of SS and TMA segmental T-loop will add more resulting force along with the increase of retraction distance. The force resulted by the SS T-loop with various α and β gables are significantly different, while the force resulted by the TMA T-loop are not (p-value <0.05), as long as α + β is the same. The force resulted by the SS T-loop with various α and β gables are significantly different. However, on the TMA segmental T-loop, as long as α + β is the same, the force resulted will not be different.
Synthesis of poly-ε-caprolactone/hydroxyapatite composite materials by in situ and mechanical mixing methods and investigation of their physico-chemical properties
Authors: Karaseva S , Botvin V , Filimoshkin A 
Published: August 2019

Abstract
This work is dedicated both to investigation of the influence of different conditions on the molecular weight characteristics of poly- ε-caprolactone (PCL) and to the synthesis of composites based on PCL and hydroxyapatite (HA) by in situ and mechanical mixing methods. It was shown that in situ synthesis is accompanied by chemical interactions between PCL and HA that were confirmed by IR spectroscopy and thermal analysis. The morphology of in situ obtained composites has more homogeneous and regular distribution of HA particles in the polymeric matrix than composites synthesized by mechanical mixing of HA and PCL.
Petroleum Resin Influence on the Relaxation Process of Petroleum Paraffin Solutions Treated in Ultrasound
Authors: Volkova G I , Morozova A V 
Published: August 2019

Abstract
This paper summarizes the experimental work done on the effect of petroleum resins on the process of relaxation the structural and rheological properties of petroleum paraffin solutions treated in ultrasonic field.
A combined treatment of petroleum paraffin solutions including 22 kHz ultrasonic exposure and addition of petroleum resins (0.3% 0.6% 0.9% by weight) was carried out. The addition of petroleum resins into the treated solution depresses the crystallization of hydrocarbons and favours the reduction of structural-mechanical characteristics of the system. The transition of the excited state of systems after the removal of the ultrasonic load to an equilibrium state occurs in time, and the nature of the change in the rheological characteristics and microstructure of paraffin crystals depends on the composition of the dispersion medium. It was revealed that trace amounts of resins introduced into paraffin oil systems treated with ultrasound will reduce their viscosity and improve transportation of hydrocarbons for 2 days at minimal cost.
Influence of the composition of the adsorbent “hygroscopic salt/aluminum oxide” on its physicochemical properties
Authors: Budaev Zh B , Livanova A V , Meshcheryakov E P , Isupova L A , Magaev O V 
Published: August 2019

Abstract
The paper presents the research results of physicochemical characteristics, adsorption kinetics and value of adsorption capacity with respect to water vapors of the composite adsorbent “CaCl2 – aluminum oxide”. Sorbent synthesized by centrifugal thermal activation of hydrargillite and its subsequent hydration in mild conditions was used as a carrier. It was shown that, in the studied range of change in the CaCl2 content of the adsorbent (8.6-15.5% mass.), a sample containing 13.8% mass. of CaCl2 was the most promising when used as a desiccant. This sample was characterized by static capacitance that was higher than 20 g/100 g, by quite high dynamic capacitance of 5.8 g/100 cm3 and good mechanical strength of 4.9 MPa.
Method for extraction of gold and silver from technogenic pyrite raw materials
Authors: Sachkov V I , Nefedov R A , Medvedev R O 
Published: August 2019

Abstract
The paper contains the results of hydrometallurgical processing of technogenic pyrite raw materials. The method is based on selective extraction of gold and silver from ore by solution, which contains sodium sulfite and sodium sulfate. The most promising results were obtained utilizing solution with sodium sulfite and sodium sulfate concentration of 25 g/L and leaching time – 1 hour. Under these conditions, the extraction of gold was 67%. The use of sodium sulphate and sodium sulfite allows to extract gold and partially silver from refractory sulfide ores.
High-temperature oxidation resistance of Ti-implanted E110 alloy
Authors: Kashkarov E B , Syrtanov M S , Shevelev A E , Kurochkin A V , Pavlov S K 
Published: August 2019

Abstract
This paper describes the effect of surface modification by high-intensity Ti-ion implantation on the high-temperature oxidation resistance of E110 zirconium alloy. The oxidation tests were performed in air at 873 K for 10 h and in water steam at 1373 K for 10 min. The microstructure, phase composition and depth distribution of elements were analysed using scanning electron microscopy, X-ray diffraction and glow-discharge optical emission spectroscopy, respectively.
Influence of Calcium-Phosphate Coating on Wettability of Hybrid Piezoelectric Scaffolds
Authors: Zviagin A , Chernozem R , Surmeneva M , Loza K , Prymak O. , Ulbricht M , Epple M , Surmenev R 
Published: August 2019

Abstract
Herein, electrospun biodegradable scaffolds based on polycaprolactone (PCL), poly(3-hydroxybutyrate) (PHB) and polyaniline (PANi) polymers were fabricated. A calcium-phosphate (CaP) coating was deposited on the surface of the scaffolds via an improved soaking process. Influence of the deposition cycles and ethanol concentration in the solution on the relative increase of the scaffolds weight and water contact angle (WCA) are determined. The characterization of the molecular and crystal structure confirmed the formation of CaP phase. Importantly, WCA results showed that the pristine scaffolds have the hydrophobic surface, while the deposition of CaP coating onto scaffolds allows to significantly improve the surface wetting behavior, and infiltration of the water droplets into the CaP-coated scaffolds was observed. Thus, the fabricated hybrid biodegradable piezoelectric scaffolds can be utilized for regenerative medicine.
Soil-concretes from Yakutia’s clay materials
Authors: Mestnikov A E , Fedorov V I 
Published: August 2019

Abstract
The article presents the results of experimental studies on the choice of the optimal technological parameters (the initial moisture of the soil-cement mixture, pressing force, amount of cement) for the preparation of samples of soil-concrete by semi-dry pressing. Research has shown that the predicted strength of the soil-concrete can be obtained not only by varying the amount of Portland cement injected, but also by selecting the pressing force and the initial moisture of the initial mixture. The obtained experimental data allow predicting the construction and operational properties of soil-concretes materials from clay raw materials of a specific field, to clarify the methods of manufacture and the area of their application (foundations of airfields, roads and engineering structures, building products and structures).
Force and current in a contact gap between single highly resistive particles: experimental observations
Authors: Vora Alpesh , Stepputat Jan , Riebel Ulrich 
Published: August 2019

AbstractIn case of electrical conduction through highly resistive dust layers, the generation of electrostatic adhesion force is strongly coupled to the mechanism of electrical (current) transport in the solid. High field strengths lead to a significant increase of the adhesive force. Here, more insight into the underlying mechanisms is given by experiments on the microscopic scale. An experimental arrangement is described which allows to study a particle pair subject to a strong electric field. Both the current and the force between the particles (150μm) can be measured as a function of voltage and gap distance. The results show an extremely complex behaviour of the contact for the case of highly resistive particles. For current transport, both gas discharges and thermionic field emission are observed, depending on the width of the contact gap and the field strength. For both the force and the current across the gap, a strongly non-linear behaviour with pronounced time effects is observed.