bluuebunny/crossref_metadata_2025_split huggingface dataset:
Plasma–surface interaction in the stellarator W7-X: conclusions drawn from operation with graphite plasma-facing components
Authors: BrezƖnsek S. , Dhard C.P. , Jakubowski M. , König R. , Masuzaki S. , Mayer M. , Naujoks D. , Romazanov J. , Schmid K. , Schmitz O. , Zhao D. , Balden M. , Brakel R. , Butterschoen B. , Dittmar T. , Drews P. , Effenberg F. , Elgeti S. , Ford O. , Fortuna-Zalesna E. , Fuchert G. , Gao Y. , Goriaev A. , Hakola A. , Kremeyer T. , Krychowiak M. , Liang Y. , Linsmeier Ch. , Lunsford R. , Motojima G. , Neu R. , Neubauer O. , Oelmann J. , Petersson P. , Rasinski M. , Rubel M. , Sereda S. , Sergienko G. , Sunn Pedersen T. , Vuoriheimo T. , Wang E. , Wauters T. , Winters V. , Zhao M. , Yi R. , the W7-X Team  
Published: November 2021

Abstract
W7-X completed its plasma operation in hydrogen with island divertor and inertially cooled test divertor unit (TDU) made of graphite. A substantial set of plasma-facing components (PFCs), including in particular marker target elements, were extracted from the W7-X vessel and analysed post-mortem. The analysis provided key information about underlying plasma–surface interactions (PSI) processes, namely erosion, transport, and deposition as well as fuel retention in the graphite components. The net carbon (C) erosion and deposition distribution on the horizontal target (HT) and vertical target (VT) plates were quantified and related to the plasma time in standard divertor configuration with edge transform ι = 5/5, the dominant magnetic configuration of the two operational phases (OP) with TDU. The operation resulted in integrated high net C erosion rate of 2.8 mg s−1 in OP1.2B over 4809 plasma seconds. Boronisations reduced the net erosion on the HT by about a factor 5.4 with respect to OP1.2A owing to the suppression of oxygen (O). In the case of the VT, high peak net C erosion of 11 μm at the strike line was measured during OP1.2B which converts to 2.5 nm s−1 or 1.4 mg s−1 when related to the exposed area of the target plate and the operational time in standard divertor configuration. PSI modelling with ERO2.0 and WallDYN-3D is applied in an interpretative manner and reproduces the net C erosion and deposition pattern at the target plates determined by different post-mortem analysis techniques. This includes also the 13C tracer deposition from the last experiment of OP1.2B with local 13CH4 injection through a magnetic island in one half module. The experimental findings are used to predict the C erosion, transport, and deposition in the next campaigns aiming in long-pulse operation up to 1800 s and utilising the actively cooled carbon-fibre composite (CFC) divertor currently being installed. The CFC divertor has the same geometrical design as the TDU and extrapolation depends mainly on the applied plasma boundary. Extrapolation from campaign averaged information obtained in OP1.2B reveals a net erosion of 7.6 g per 1800 s for a typical W7-X attached divertor plasma in hydrogen.
Bare laser-synthesized plasmonic Au and TiN nanoparticles as functional additives to polymer nanofiber platforms for tissue engineering applications
Authors: Al-Kattan A , Kabashin A V 
Published: November 2021

Abstract
Exhibiting strong optical absorption in the visible – near-infrared, plasmonic nanomaterials can be used as transducers in optical biosensing, contrast agents in bioimaging and synthesizers of photothermal therapy. Such functionalities promise their employment as functional elements in tissue engineering platforms, but such applications typically require ultraclean nanomaterials to minimize toxicity problems, which is not easy using conventional chemical synthesis routes. We recently demonstrated the possibility of fabricating ultraclean bare (ligand-free) plasmonic Au and TiN nanoparticles by ultrashort laser ablation in liquid ambient. Exempt of any toxic contaminants and exhibiting a series of imaging and therapeutic functionalities, these nanomaterials present promising objects for various biomedical applications. Here, we review our recent progress in the co-electrospinning of laser-synthesized Au and TiN nanoparticles with polymers to form functionalized matrices for tissue engineering.
Design and characterisation of calcium carbonate microspheres for anticancer drug delivery
Authors: Kalenichenko D , Nifontova G , Sukhanova A , Nabiev I 
Published: November 2021

Abstract
The development of delivery systems providing prolonged release of antitumor drugs represents one of the challenges in designing and optimization of novel tools for cancer therapy. The employment of spherical inorganic microparticles, in particular, calcium carbonate vaterite microspheres, as microcarriers appears promising because of their porous, matrix structure, biocompatibility, and biodegradability. Here, we summarize the results of the development of the approaches to synthesis of calcium carbonate vaterite microspheres with narrowed size distribution and microencapsulation of low-molecular-weight anticancer drugs, such as doxorubicin hydrochloride into obtained microspheres. Supplementing the reaction mixture with a thickener defines fabrication of homogeneous vaterite microparticles with a spherical shape and an average size of 2 to 3 μm. Synthesised microspheres ensure prolonged release of doxorubicin at physiological pH values and can be used as a delivery system and as a structural component for development of a theranostic platform for tumour treatment and diagnosis.
Novel advanced nanotechnologies for nuclear medicine
Authors: Zavestovskaya I N , Grigorieva M , Petrunya D , Grigoriev A , Deyev S M , Prasad P N , Kabashin A V 
Published: November 2021

AbstractNuclear nanomedicine forms a new research field based on the synergy of nuclear medicine and nanotechnology and implying the use of nanomaterials as carriers of diagnostic or therapeutic radionuclides. Such an approach promises a series of advantages over classical methods of nuclear medicine, including an increased surface area-to-volume ratio, passive/active delivery, high loading capacity, large cross-section in interactions with biological tissues, and unique properties of nanomaterials that make possible many functionalities within one construct. In this short review article, we will highlight our recent achievements in the development of nuclear nanomedicine technologies, which promise the advancement of methods for cancer treatment.
Low Intensity Beam Extraction Mode on the Protom Synchrotron for Proton Radiography Implementation
Authors: Pryanichnikov A A , Zhogolev P B , Shemyakov A E , Belikhin M A , Chernyaev A P , Rykalin V 
Published: November 2021

Abstract
Proton radiography is one of the most important and actual areas of research that can significantly improve the quality and accuracy of proton therapy. Currently, the calculation of the proton range in patients receiving proton therapy is based on the conversion of Hounsfield CT units of the patient's tissues into the relative stopping power of protons. Proton radiography is able to reduce these uncertainties by directly measuring proton stopping power. The study demonstrates the possibility of Protom synchrotron-based proton therapy facilities to operate in a special mode which makes it possible to implement proton radiography. This work presents the status of the new low beam intensity extraction mode. The paper describes algorithms of low flux beam control, calibration procedures and experimental measurements. Measurements and calibration procedures were performed with certified Protom Faraday Cup, PTW Bragg Peak Chamber and specially designed experimental external.
Formation of critical thinking related to the energetic efficiency of applied physics processes of civil engineering works
Authors: Márquez Peñaranda J F , Pineda Rodríguez J R , Rodríguez Lizcano A 
Published: November 2021

Abstract
Current problems associated to contamination and climate change claim for urgent solutions to make real a sustainable development of modern societies. To answer that call, the efficiency of applied physics processes must be continuously evaluated. Particularly, engineering programs are called to strengthen the training offer related to basic and applied physics sciences considering energetic transformation and transferring processes. In the civil engineering field, design, construction, functioning, and final disposition of buildings can be understood as applied physics processes. This work proposes an approach for defining and studying possible variables related to energetic processes and their mutual relationship. Such variables must be able to describe the processes of energetic changes which can occur during construction of civil works. To do so, qualitative analysis of mathematic expressions is done to promote the formation of abstract mental connections made of sensitivity and logical thinking. The methodology is based on four moments: (a) students’ brainstorming related to a particular issue, (b) identification of main topics related to energy transformation, (c) variable operationalization, (d) proposal of mathematical expressions. This proposal is expected to facilitate the construction of concepts related to sustainable development and help students to trust themselves when taking well thought out risks.
Evaluation of the teaching of physics areas in university engineering programs
Authors: Garzón-Agudelo P A , Palacios-Alvarado W , Medina-Delgado B 
Published: November 2021

Abstract
Relevance studies provide a vision of the impact and degree to which an academic offer responds to the needs of an environment. In this research it was possible to analyze the context of the existing technological level programs with respect to the offer of physics branches linked in their curricula, in order to determine the correlation between these areas and the contribution they represent in the development of competences and skills for the exercise of the profession of Technologists in areas of Engineering knowledge. A descriptive methodological approach was used, through the application of instruments and tools that allowed synthesizing the findings in relation to the formulated study hypothesis. It was concluded that the fields of physics at the technological level allowed establishing the bases to articulate the knowledge towards the disciplinary study in each of the programs studied; likewise, it was evidenced that the behavior of the proportion of physics courses within the curricular structures are corresponding among the programs under study; and finally, it was demonstrated that the areas of physics are mostly addressed in the programs whose specific field demands the application of electronic, mechanical, electromechanical, manufacturing, instrumentation, automation and control systems.
Daily performance of a solar hybrid regenerative gas turbine in Colombia
Authors: Moreno-Gamboa F , Vera-Duarte E , Guerrero-Gómez G 
Published: November 2021

Abstract
This work presents the evolution of the operation of a regenerative hybrid solar gas turbine in an average day of the year. The system is evaluated by means of a thermodynamic model that includes a solar concentrated heliostat field solar concentrator with central receiver, a combustion chamber, and the thermal engine. The model is applied in Barranquilla, Colombia using local temperature and the solar radiation estimated with a theoretical model. Power output, the global efficiency and thermal engine efficiency are estimated. Additionally, to estimate the temperatures in different states of the cycle with and without regenerator. Finally, the impact of the regenerator is evaluated, which can increase the temperature of the solar receiver by up to 13.6%, and the inlet temperature to the combustion chamber increases by 17.3% at noon, when solar radiation is maximum.
Development of a gravimetric fuel measurement system for the evaluation of engine performance physical parameters
Authors: Prada Botia G C , Rojas Suárez J P , Orjuela Abril M S 
Published: November 2021

Abstract
This paper presents the implementation and design features of a gravimetric-based fuel consumption system. The proposed system comprises a gravimetric balance with serial output, a fuel pump, and a control valve that are integrated into a complete engine test bench via Arduino UNO®. The study implements an instrumentation methodology to minimize measurement disturbance and error propagation, which represents a major concern in engine experimental testing. Moreover, an interactive virtual environment is developed to reinforce user interaction via LabView™. Results demonstrated that the proposed measurement system features robust and reliable operation while maintaining negligible disturbance and overall uncertainty ranging from 0.010-0.23 g/s. Additionally, it was evidenced that the measurement system allows the analysis of key parameters to evaluate engine performance. The study of the fuels blends shows that the ethanol content causes a 6.8% increase in brake specific fuel consumption and a 4% decrease in the brake thermal efficiency. Due to the low cost of the developed measurement system can be easily adapted to test bench laboratories to promote a better learning process and in industrial sectors for better energy management.
Identifying Subsurface Structures beneath the Sumani and Sianok Segments of the Great Sumatran Fault using Combined Geophysical Methods
Authors: Amir Harman , Bijaksana Satria , Dahrin Darharta , Nugraha Andri Dian , Arisbaya Ilham 
Published: November 2021

Abstract
The 1900 km long Great Sumatran Fault is a complex active fault system that is divided into segments that include the Sumani and Sianok segments in a rather densely populated area of the West Sumatra Province. Major earthquakes have occurred in these two segments that include the March 2007 Sumatra earthquake. Mitigating future risks requires a better understanding of these complex segments. To identify the subsurface structures beneath the Sumani and Sianok segments, we are conducting combined geophysical study that include gravity and magnetic. Gravity data were obtained from the published regional Bouguer anomaly map of the area around these two segments. The measurements from which the map was derived were rather sparse. Thus, more detailed magnetic measurements were carried out in this study. Magnetic measurements were also expected to be more sensitive as the predominant rocks in the study area are volcanic as well as other type of intrusive rocks. These gravity and magnetic analyses were complemented by seismicity data that include relocated seismicity data that will enhance the modelling of subsurface structures. Progress of this study will be reported. Challenges and obstacles will also be presented.
Seismic Vulnerability Index Calculation for Mitigation Purposes at Cilacap District
Authors: Edison Robert , Rohadi Supriyanto , Perdana Yusuf , Riama Nelly Florida , Karnawati Dwikorita 
Published: November 2021

Abstract
Seismic vulnerability index is one of the key factors in mitigation that shows the vulnerability of the soil layer beneath when passed through with a wave, the more vulnerable the soil layer, the more damage it done when an earthquake happens. Seismic vulnerability is calculated using two variables, that is dominant frequencies and amplification that are obtained by analyzing HVSR curve. HVSR are used to determine the dominant frequency by determining the maximum amplification in that area. HVSR curve is obtained by measuring microbemor data in 163 spots with 30 minutes-minimum duration in Cilacap with a portable seismograph. Mierotremor is a natural vibration that is caused by continuous vibration that come from beneath the surface, sometimes mixed up by the vibrabon that is caused by human activities such as pipe-flow, vehicles, etc. Thus, the purposes of this research are to determine which area is more vulnerable than others, based on the seismic vulnerability index, so it could be a reference for regional development to classified is it safe or unsafe to build in that area, remembering Cilacap is one of the most developed Districts in Central Java.
Gravity Data Analysis Based on Optimum Upward Continuation Filter and 3D Inverse Modelling (Case Study at Sedimentary Basin in Volcanic Region Malang and Its Surrounding Area, East Java)
Authors: Setiadi I , Marjiyono  , Nainggolan T B 
Published: November 2021

Abstract
The study on the fore-arc sedimentary basin for hydrocarbon exploration is rare because of the more complicated geological structures, and conventional seismic methods cannot optimally penetrate the rock layers as there are many volcanic and limestone rocks. One of the natural resources potential in the Southern part of the East Java region, especially in Malang and its surrounding areas is the possibility of hydrocarbons in the fore-arc basin, so research is needed to know the existence of these sedimentary basins. The gravity method is one of the geophysical methods used to assess sedimentary basins based on physical parameters of mass density. The aims of this research are to delineate the sedimentary sub-basin, to find out its structure pattern, interpret subsurface geological and basement configuration. The data analysis approach used in this study involves spectral analysis, upward continuation filter, and 3D inverse modeling. The maximum height for the optimum upward continuation filter is 3000 m, which results in regional and residual anomalies. There were five sedimentary sub-basins identified based on residual gravity anomaly, and the gravity anomalies can also detect structure patterns such as basement high, lineament, and fault pattern. The bedrock is supposed as an intermediate igneous rock with a mass density of around 2.7 gr/cc according to the results of 3D inverse modeling. Deposition from bottom to upward is Mandalika, Nampol, and Wonosari Formations and completed by the uppermost are quaternary volcanic rocks. The inversion modeling results show that the Malang and surrounding areas have thick sedimentary rocks covered by volcanic deposits, which is impressive for further investigation to explore the possibility of the hydrocarbon existence in these areas.
Integrated Pore Pressure Model Estimation – Case Study of Jambi Sub-basin, South Sumatera, Indonesia
Authors: Farabi Ahmad Farhan , Winardhie Ignatius Sonny , Wibowo Noor Cahyo 
Published: November 2021

Abstract
Pore pressure estimation is crucial in drilling wells for safety purposes also a very effective method for dealing with drilling accidents. Determination of overpressure is the main foundation in the evaluation to minimize the non-productive time (NPT). Here we present several models to generate pore pressure analysis of well from Jambi Sub-basin, South Sumatera, Indonesia. The model for estimation pore pressure is carried out by 3 methods: Eaton, Yan & Han, and Kan & Swan. Those methods will be compared to gain a more accurate model estimation within the study area. Kan and Swan’s model show the best fit for estimation because this method is suitable for the formation of tester like MDT/DST on higher frequency with parameter of C1 = 0.001 and C2 = 0.0003 for Jambi Sub-basin. The velocity data to construct the 3D pore pressure model was also validated with well data using multi-attribute analysis. The multi-attribute analysis used 2 algorithms, namely step-wise regression and probabilistic neural network (PNN). The analysis show that PNN has a better correlation compared to step-wise regression. The analysis shows the overpressure zone depth is ranges from 1700 – 2000m on Gumai Formation with maximum pressure around 6500 psi. The peak of overpressure dominated by Gumai and Talang Akar formation is caused by the loading mechanism because the rate of sedimentation on thick shale sequence is higher than the rate of dewatering on those formations.
The Study of Automatic Picking of P and S Wave Arrival and Identification of Earthquake Sequence Pattern using Scalogram in Obspy (Python)
Authors: Kiswanti Sri , Palupi Indriati Retno , Raharjo Wiji , Arwa Faricha Yuna , Dwiyanti Nela Elisa 
Published: November 2021

Abstract
Initial identification on an earthquake record (seismogram) is something that needs to be done precisely and accurately. Moreover, the discovery of a series of unexpected successive earthquake events has caused unpreparedness for the community and related agencies in tackling these events. Determining the arrival time of the P and S waves becomes an important parameter to finding the location of the earthquake source (hypocenter) as well as further information related to the earthquake event. However, manual steps that are currently often used are considered to be less effective, because it requires a lot of time in the process. Continuous Wavelet Transform (CWT) analysis can be a solution for this problem. With further CWT analysis in the form of a scalogram, can help to determine the arrival time of P and S waves automatically (automatic picking) becomes simpler. In addition, further CWT analysis can also be utilized to help identify the sequence of earthquake events (foreshock, mainshock, aftershock) through the resulting scalogram pattern.
Flower Pollination Algorithm for the Inversion of Schlumberger Sounding Curve
Authors: Raflesia F , Widodo W 
Published: November 2021

Abstract
Inversion of schlumberger sounding curve is non-linear, and multi-minimum. All linear inversion strategies can produce local optimum, and depend on the initial model. Meanwhile, the non-linear bionic method for inversion problems does not require an initial model, simple, flexible, derivation-free mechanism and can avoid local optimum. One of the new algorithm of the non-linear bionic method for geophysical inversion problem is the Flower Pollination Algorithm (FPA). The FPA is used for the inversion of schlumberger sounding curve. This algorithm was stimulated by the pollination process for blooming plants. The applicability of the present algorithm was tested on synthetic models A-type and KH-type curve. Numerical tests in MATLAB R2013a for the synthetic data and the observed data show that FPA can find the global minimum. For further study, inverted results using the FPA are contrasted with the damped least-square (DLSQR) inversion program, Particle Swarm Optimization (PSO), and Grey Wolf Optimizer (GWO). The outcomes of the comparison reveal that FPA performs better than the DLSQR inversion program, PSO, and GWO.
Integration of Post-stack Inversion and Rock Physics to Determine Sandstone Reservoir Quality: Barakan Sub-basin case
Authors: Nainggolan T B , Adhar M P , Setiadi I 
Published: November 2021

Abstract
Barakan Sub-basin is assessed as potential basin for hydrocarbon reserves in the eastern region of Indonesia because it is adjacent to Masela block giant gas field. Reservoir rocks in this sub-basin are sandstones from Middle Jurassic (Lower Flamengo Formation) until Oligocene (Adi member Formation). Main sandstone reservoir rocks are knowingly studied to have good porosity in Upper Flamengo, Kopae, Ekmai and Adi member Formations. But, there is no significant study to determine sandstone reservoir distribution that have good porosity quality. Therefore, an integrated method of inversion and rock physics study are needed to determine sandstone reservoir quality. This study uses 2D marine seismic post-stack time migration and 2 wells namely Barakan-1 and Koba-1 wells. Sensitivity analysis with cross-plot of gamma ray log versus acoustic impedance values range of 20-60 API and 9000-42000 (ft/s)*(g/cc) shows a strong correlation of good porosity sandstone to low impedance in Ekmai Formation of both wells. Model based of post-stack inversion reveals sandstone distribution in Ekmai Formation of both wells. Time structure maps of top and bottom horizons in Ekmai Formation indicates Barakan-1 well within anticline height structure and Koba-1 well are deposited in a middle of sub-littoral environment.