bluuebunny/crossref_metadata_2025 huggingface dataset:
Coupled heat transfer simulations for evaluation of thermal performance during hydrogen absorption in cylindrical uranium-based hydride beds
Authors: Li Wei , Zeng Xiangguo , Chen Huayan , Cui Yehui , Wang Fang
Published: September 2020

In this work, we established a three-dimensional coupled heat transfer model to evaluate the heat transfer during the hydrogenation reaction process in a uranium-based hydride bed. We constructed numerical simulations combined with the proposed model using Fluent to systematically investigate the influence of structure configurations, cooling media, and material thermal–physical properties on the thermal performance. Importantly, because the coolant temperature and the bed wall continuously changed during the hydrogen recovery process, the solid–liquid interface temperature had to be considered for an efficient thermal design of the bed wall cooling system. Accordingly, a coupling iteration algorithm was developed to improve the temperature prediction accuracy. In addition, we systematically investigated the effects of layer thickness, thermal conductivity, and cooling systems on the heat transfer behavior. The results demonstrated that reducing the hydride layer thickness, mixing the metal hydride bed with high-conductivity materials, increasing the cooling agent flow velocity, and using a cooling agent with a lower temperature were more beneficial in improving the thermal performance of the metal hydride bed. In addition, thinning the hydride layer and enhancing the hydride material thermal conductivity were found to decrease the peak temperature. Furthermore, the heat transfer efficiencies of hydride materials, bed structures, and cooling systems should be well matched to obtain optimal operating parameters. The results highlighted the applicability of the proposed model and the coupled heat transfer method to effectively characterize the temperature patterns of uranium-based hydride beds during hydrogen absorption.
Atmospheric rivers associated with summer heavy rainfall over the Yangtze Plain
Authors: Liang Ping , Dong Guangtao , Zhang Huqiang , Zhao Mei , Ma Yue
Published: September 2020

Atmospheric rivers (ARs) are long, narrow bands of enhanced water vapour transport in the low atmosphere, mainly from the tropics into the midlatitudes. However, it is still unclear how ARs act on different timescales during the boreal summer when frequent heavy precipitation events take place in East Asia, often resulting in severe flood that impacts property and human lives. In this study, we investigated climatological ARs, and their evolution on both synoptic and subseasonal timescales, associated with heavy rainfall events over the Yangtze Plain in China. Furthermore, their predictability was assessed by examining hindcast skills from an operational coupled seasonal forecast system of the Australian Bureau of Meteorology named ACCESS-S1. Results showed that ARs embedded within the South Asian monsoon and Somali cross-equatorial flow provide a favourable background for steady moisture supply of summer rainfall into East Asia. We call this favourable background a ‘climatological East Asian AR’, which has close connections with seasonal cycles and climatological intraseasonal oscillation of rainfall in the Yangtze Plain during its Meiyu season. The East Asian AR was also influenced by anomalous anticyclonic circulations over the tropical West Pacific when heavy rainfall events occurred over the Yangtze Plain. Different from orography-induced precipitation, ARs that led to heavy rainfall over the Yangtze Plain were linked with the intrusions of cold air from the north. The major source of ARs responsible for heavy precipitation events over the Yangtze Plain appeared to originate from the tropical West Pacific on both synoptic and subseasonal timescales. In 23-year hindcasts for May-June-July the current model, ACCESS-S1, had skillful rainfall forecasts at a lead time of 0 month, but the skill degraded significantly with longer lead times. Nevertheless, the model showed skills in predicting the variations of low-level moisture transport affecting the Yangtze River at longer lead time, suggesting that the ARs influencing summer monsoon rainfall in the East Asian region are likely to be more predictable than rainfall itself. There is potential in using AR predictions from the coupled forecast system to guide rainfall forecasts in the East Asian summer season at longer lead time, which can contribute to disaster prevention and reduction in East Asia.
The influence of prescribed burning and wildfire on lidar-estimated forest structure of the New Jersey Pinelands National Reserve
Authors: Warner Timothy A. , Skowronski Nicholas S. , La Puma Inga
Published: September 2020

Prescribed burning is a common land management tool used to reduce fuels, emulate the effects of wildfire and increase heterogeneity in fire-prone ecosystems. However, the forest structure created by prescribed burning is likely to be dissimilar to that produced by wildfire. We used three-dimensional estimates of canopy bulk density (CBD) from lidar data to explore the relationship between fire type, number of burns and fuel structure/forest structure in the New Jersey Pinelands National Preserve, USA. We found that in areas of previous prescribed fires, as the number of fires increased, the understorey (1–2m) exhibited a slight decrease in CBD, while the upper canopy (15–23m) had higher values of CBD for ≥4 fires, though these differences were not statistically significant. However, an increasing number of wildfires was associated with a statistically significant increase in CBD in the mid-storey (3–7m) and a decrease in CBD in the canopy (≥8m). These results have important implications for forest resource managers because they indicate that prescribed burning reduces ladder fuels that lead to torching and crown fires, but it does not replicate the structure created by wildfire.
Language development in children from different SES backgrounds
Authors: Vanormelingen Liesbeth , Faes Jolien , Gillis Steven
Published: September 2020

The aim of the study is to analyze prelexical speech development in young children with a different socio-economic status (SES): children from low SES backgrounds (lowSES) are compared with mid-to-high SES (mhSES) children. Timing of the onset of babbling and the consonantal development in consonant-vowel (cv) syllables are investigated. Result show that lowSES children reach the babbling onset milestone significantly later than mhSES children. In addition, they use different consonant types in their cv-syllables: they use more glides, but fewer stops, nasals, fricatives, and liquids. These early differences between children of different backgrounds seem to be in line with the literature on SES differences later on in life.
How subjective are Mandarin reason connectives?
Authors: Xiao Hongling , Li Fang , Sanders Ted J. M. , Spooren Wilbert P. M. S.
Published: September 2020

Studies in several languages find that causal connectives differ from one another in their prototypicalmeaning and use, which provides insight into language users’ cognitive categorization of causal relations in discourse. Subjectivity plays a vital role in this process. Using an integrated subjectivity approach, this study aims to give a comprehensive picture of the semantic-pragmatic distinctions between Mandarinreasonconnectivesjìrán‘since’, yīnwèiandyóuyú‘because’. The data come from spontaneous conversation, microblog, and newspaper discourse, while most previous studies have focused only on written data. The results show that, despite the contextual differences in discourse from each corpus, the connectives display distinctive and robust profiles.Jìránis subjective. It prototypically expressesspeech actandepistemiccausalities featuringspeech actandjudgmentin the consequent.Speaker SoC(subject of consciousness) is actively involved yet remainsimplicitin the utterances.Yóuyú, by contrast, is objective. It typically expressesvolitionalandnon-volitional contentcausalities featuring the consequent ofphysical actandfact,which are usually independent of SoCs.Yīnwèiis neutral in general, with a slight preference tovolitional contentandepistemicrelations, to the consequent offact, and tospeaker SoC.Only one interaction with discourse style is found: in relations introduced byyīnwèi,the linguistic realization of the SoC varies across corpora: significantly moreimplicityet fewexplicitcases in microblogs, yet the opposite is true in conversations. The specific profile ofyīnwèi, depending on the ordering of the antecedent and the consequent, is robust across corpora. Furthermore, the relative importance of the associated subjectivity features is determined. In conclusion, the study contributes to our understanding of causal coherence and extends theempirical database that supports the claims of a cognitive account of causal coherence relations.
Article Commentary: Response to Coronavirus 2019 in Veterans Health Administration Facilities Participating in an Implementation Initiative to Enhance access to Medication for Opioid use Disorder
Authors: Gustavson Allison M. , Gordon Adam J. , Kenny Marie E. , McHenry Haley , Gronek Julie , Ackland Princess E. , Hagedorn Hildi J.
Published: September 2020

The actions needed to mitigate the spread of the coronavirus 2019 (COVID-19) have forged rapid paradigm shifts across healthcare delivery. In a time of crisis, continued access to and delivery of medication for opioid use disorder (M-OUD) is essential to save lives. However, prior to COVID-19, large variability in M-OUD adoption existed across the Veteran Health Administration (VHA) and it is unknown whether the COVID-19 pandemic exacerbated this divide. For the past two years, our team worked with eight VHA facilities to enhance adoption of M-OUD through a multi-component implementation intervention. This commentary explores these providers’ responses to COVID-19 and the subsequent impact on their progress toward increasing adoption of M-OUD. Briefly, the loosening of regulatory restrictions fostered accelerated adoption of M-OUD, rapid support for telehealth offered a mechanism to increase M-OUD access, and reevaluation of current practices surrounding M-OUD strengthened adoption. Overall, during the COVID-19 crisis, facilities and providers responded positively to the call for increased access to M-OUD and appropriate care of patients with OUD. The VHA providers’ responses and continued progress in enhancing M-OUD amidst a crisis may, in part, be attributable to their participation in an implementation effort prior to COVID-19 that established resources, expert support, and a community of practice. We anticipate the themes presented are generalizable to other healthcare systems grappling to deliver care to patients with OUD during a crisis. We propose areas of future research and quality improvement to continue to provide access and high quality, life-saving care to patients with OUD.
Anisotropic deformations in a class of projectively-invariant metric-affine theories of gravity
Authors: Jiménez Jose Beltrán , de Andrés Daniel , Delhom Adrià
Published: September 2020

Among the general class of metric-affine theories of gravity, there is a special class conformed by those endowed with a projective symmetry. Perhaps the simplest manner to realise this symmetry is by constructing the action in terms of the symmetric part of the Ricci tensor. In these theories, the connection can be solved algebraically in terms of a metric that relates to the spacetime metric by means of the so-called deformation matrix that is given in terms of the matter fields. In most phenomenological applications, this deformation matrix is assumed to inherit the symmetries of the matter sector so that in the presence of an isotropic energy–momentum tensor, it respects isotropy. In this work we discuss this condition and, in particular, we show how the deformation matrix can be anisotropic even in the presence of isotropic sources due to the non-linear nature of the equations. Remarkably, we find that Eddington-inspired-Born–Infeld (EiBI) theories do not admit anisotropic deformations, but more general theories do. However, we find that the anisotropic branches of solutions are generally prone to a pathological physical behaviour.
Junction conditions in Palatini f(R) gravity
Authors: Olmo Gonzalo J , Rubiera-Garcia Diego
Published: September 2020

We work out the junction conditions for f(R) gravity formulated in metric-affine (Palatini) spaces using a tensor distributional approach. These conditions are needed for building consistent models of gravitating bodies with an interior and exterior regions matched at some hypersurface. Some of these conditions depart from the standard Darmois-Israel ones of general relativity and from their metric f(R) counterparts. In particular, we find that the trace of the stress–energy momentum tensor in the bulk must be continuous across the matching hypersurface, though its normal derivative need not to. We illustrate the relevance of these conditions by considering the properties of stellar surfaces in polytropic models, showing that the range of equations of state with potentially pathological effects is shifted beyond the domain of physical interest. This confirms, in particular, that neutron stars and white dwarfs can be safely modelled within the Palatini f(R) framework.
Gauge, canonical and Galilean transformations and the non-uniqueness of Lagrange functions
Authors: Wei L F
Published: September 2020

The non-uniqueness of Lagrange functions is a standard topic in classical mechanics. However, it is still troublesome in undergraduate and graduate teaching. In this paper, we show that this non-uniqueness is equivalent to gauge freedom, and thus the gauge, canonical, and Galilean transformations are equivalent. In this sense, we also discuss how to solve the problem of selecting one out of many gauge-equivalent Hamiltonians to represent energy.
Inexact Newton-type methods based on Lanczos orthonormal method and application for full waveform inversion
Authors: He Qinglong , Wang Yanfei
Published: September 2020

The second-order derivative information plays an important role for large-scale full waveform inversion problems. However, exploiting this information requires massive computations and memory requirements. In this study, we develop two inexact Newton methods based on the Lanczos tridiagonalization process to consider the second-order derivative information. Several techniques are developed to improve the computational performance for our proposed methods. We present an effective stopping condition and implement a nonmonotone line search method. A method based on the adjoint-state method is used to efficiently compute Hessian-vector products. In addition, a diagonal preconditioner using the pseudo-Hessian matrix is employed to accelerate solving the Newton equation. Furthermore, we combine these two inexact Newton methods to improve the computational efficiency and the resolution. 2D and 3D experiments are given to demonstrate the convergence and effectiveness of our proposed methods. Numerical results indicate that, compared with the inversion methods based on the first-order derivative, both methods have good computational efficiency. Meanwhile, the method based on MINRES solver performs better than the method with Lanczos_CG due to its ability of utilizing the negative eigenvalue information when solving strongly nonlinear and ill-posed problems.
Shock wave propagation in long laboratory sparks under negative switching impulses
Authors: Liao Yuqin , Mahardika Nanang , Zhao Xiangen , Lee Juhyeong , He Junjia
Published: September 2020

A series of 1.27 m air gap discharge tests under negative switching impulses were carried out to characterize shock wave expansion behavior along leader channels. A high-speed Schlieren system was used to identify shock wave propagation characteristics near the high-voltage electrode. According to the Schlieren images, three distinct types of shock waves were recognized during the leader propagation and after the air gap breakdown: (1) spherical shock wave (SSW), (2) cylindrical shock wave (CSW), and (3) bow shock wave (BSW). To the best of our knowledge, it is the first time to recognize SSWs at the point where the space leader meets the main channel and BSWs along the leader branch after the main leader bridges the air gap. According to the proposed velocity calculation method, the propagation velocity of SSW and CSW was calculated as a function of the shock radius, as well as the shock wave head of BSW. Moreover, a transient magnetohydrodynamics model was developed to predict shock wave front propagation characteristics of both straight and bending channels after breakdown. The predicted shock wave propagation velocity and shock radius showed good agreement with Schlieren images.
Two-loop cutoff renormalization of 4-D Yang–Mills effective action
Authors: Ivanov A V , Kharuk N V
Published: September 2020

In the paper we study the Yang–Mills effective action in the four-dimensional spacetime by using background field formalism. We give an explicit way of cutoff regularization procedure, then do a two-loop renormalization and calculate a second β-function coefficient. We also show that the two-loop singularity contains only logarithmic part in the first degree. At the same time additional properties of a Green function regular part are obtained.
Ultrafast optical spectroscopy of semiconducting and plasmonic nanostructures and their hybrids
Authors: Catone Daniele , Di Mario Lorenzo , Martelli Faustino , O’Keeffe Patrick , Paladini Alessandra , Stefano Pelli Cresi Jacopo , Sivan Aswathi K , Tian Lin , Toschi Francesco , Turchini Stefano
Published: September 2020

The knowledge of the carrier dynamics in nanostructures is of fundamental importance for the development of (opto)electronic devices. This is true for semiconducting nanostructures as well as for plasmonic nanoparticles (NPs). Indeed, improvement of photocatalytic efficiencies by combining semiconductor and plasmonic nanostructures is one of the reasons why their ultrafast dynamics are intensively studied. In this work, we will review our activity on ultrafast spectroscopy in nanostructures carried out in the recently established EuroFEL Support Laboratory. We have investigated the dynamical plasmonic responses of metal NPs both in solution and in 2D and 3D arrays on surfaces, with particular attention being paid to the effects of the NP shape and to the conversion of absorbed light into heat on a nano-localized scale. We will summarize the results obtained on the carrier dynamics in nanostructured perovskites with emphasis on the hot-carrier dynamics and in semiconductor nanosystems such as ZnSe and Si nanowires, with particular attention to the band-gap bleaching dynamics. Subsequently, the study of semiconductor-metal NP hybrids, such as CeO2-Ag NPs, ZnSe-Ag NPs and ZnSe-Au NPs, allows the discussion of interaction mechanisms such as charge carrier transfer and Förster interaction. Finally, we assess an alternative method for the sensitization of wide band gap semiconductors to visible light by discussing the relationship between the carrier dynamics of TiO2 NPs and V-doped TiO2 NPs and their catalytic properties.
Validation of a pseudo-3D phantom for radiobiological treatment plan verifications
Authors: Kartini D A , Sokol O , Wiedemann J , Tinganelli W , Witt M , Camazzola G , Krämer M , Talabnin C , Kobdaj C , Fuss M C
Published: September 2020

Performing realistic and reliable in vitro biological dose verification with good resolution for a complex treatment plan remains a challenge in particle beam therapy. Here, a new 3D bio-phantom consisting of 96-well plates containing cells embedded into Matrigel matrix was investigated as an alternative tool for biological dose verification. Feasibility tests include cell growth in the Matrigel as well as film dosimetric experiments that rule out the appearance of field inhomogeneities due to the presence of the well plate irregular structure. The response of CHO-K1 cells in Matrigel to radiation was studied by obtaining survival curves following x-ray and monoenergetic 12C ion irradiation, which showed increased radioresistance of 3D cell cultures in Matrigel as compared to a monolayer. Finally, as a proof of concept, a 12C treatment plan was optimized using in-house treatment planning system TRiP98 for uniform cell survival in a rectangular volume and employed to irradiate the 3D phantom. Cell survival distribution in the Matrigel-based phantom was analyzed and compared to cell survival in a reference setup using cell monolayers. Results of both methods were in good agreement and followed the TRiP98 calculation. Therefore, we conclude that this 3D bio-phantom can be a suitable, accurate alternative tool for verifying the biological effect calculated by treatment planning systems, which could be applied to test novel treatment planning approaches involving multiple fields, multiple ion modalities, complex geometries, or unconventional optimization strategies.
IPEM Topical Report: An evidence and risk assessment based analysis of the efficacy of quality assurance tests on fluoroscopy units—part II; image quality
Authors: Shaw Dan , Worrall Mark , Baker Chris , Charnock Paul , Fazakerley Jason , Honey Ian , Iball Gareth , Koutalonis Manthos , Price Mandy , Renaud Caroline , Rose Amy , Wood Tim
Published: September 2020

This work aims to assess the efficacy of x-ray quality assurance tests undertaken on fluoroscopy units in the UK. Information was gathered on the results of image quality tests recommended by the reports of the Institute of Physics and Engineering in Medicine, and those additionally undertaken by medical physics departments. The assessment of efficacy considers the frequency with which a test result breaches the remedial level or other relevant threshold where applicable. The third quartile of those results exceeding the remedial level or threshold is used to estimate the severity of such a breach in terms of potential impact on patient dose and image quality. A risk assessment approach is then used to recommend to what degree, if any, the test should be included in an on-going test regimen.

Data was analysed from 469 testing sessions to 337 unique fluoroscopy units throughout the UK. Across all tests, the rate with which the remedial level was exceeded varied from 0–10.6%, with severity ranging from little or none to major degradation to image quality or significant increase on population dose. Where possible, the data has also been used to produce representative ranges for the results of image quality tests. These could be useful as an up to date comparator for those sites considering the purchase of or commissioning new equipment.

Overall the results indicate a wide range for the efficacy of those tests undertaken at present; this can be used to review local test protocols and to inform future changes to national guidance in the UK. The results also highlight some tests where measurement technique varies significantly throughout the UK, making any valid comparison difficult. This may indicate a need for further guidance on how best to undertake these tests.
Dynamics of guided post-acceleration of protons in a laser-driven travelling-field accelerator
Authors: Hadjisolomou P , Ahmed H , Prasad R , Cerchez M , Brauckmann S , Aurand B , Schroer A M , Swantusch M , Willi O , Borghesi M , Kar S
Published: September 2020

By directing the laser-driven electromagnetic pulses along a helical path, one can achieve a travelling-field accelerator arrangement for simultaneous beam shaping and re-acceleration of laser-accelerated protons. The dynamics of guided acceleration of the transiting protons was studied by varying the length of the helical coil. Experimental data shows that the protons co-moving with the field region exhibit stronger focussing while increasing the coil length, with an increase of kinetic energy due to simultaneous post-acceleration. The net energy gain for a coil of constant pitch however saturates eventually when the post-accelerated protons overtakes the accelerating field region in due course. 3D particle tracing simulation underpins the dynamics of beam transport inside the coil, which highlights the requirement for a variable pitch coil geometry in order to sustain the post-acceleration over an extended coil.
Retraction: Efficiency of Mining Algorithms in Academic Indicators (Journal of Physics: Conference Series
1432 012030)
Authors: Viloria Amelec , Palma Hugo Hernández , Núñez William Niebles , Gaitán Mercedes , Lezama Bonerge Pineda
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded. To date, there is no evidence to suggest anyone other than Amelec Viloria / Jesus Silva was directly culpable for the actions that led to retraction.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact jpconf@ioppublishing.org
Retraction: Neural Networks for Tea Leaf Classification (Journal of Physics: Conference Series
1432 012075)
Authors: Silva Jesús , Palma Hugo Hernández , Núñez William Niebles , Ruiz-Lazaro Alex , Varela Noel
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded. To date, there is no evidence to suggest anyone other than Amelec Viloria / Jesus Silva was directly culpable for the actions that led to retraction.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Retraction: Data Mining Applied in School Dropout Prediction (Journal of Physics: Conference Series
1432 012092)
Authors: Viloria Amelec , Guliany Jesús García , Núñez William Niebles , Palma Hugo Hernández , Núñez Leonardo Niebles
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded. To date, there is no evidence to suggest anyone other than Amelec Viloria / Jesus Silva was directly culpable for the actions that led to retraction.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Retraction: Parallel Algorithm for Reduction of Data Processing Time in Big Data (Journal of Physics: Conference Series
1432 012095)
Authors: Silva Jesús , Palma Hugo Hernández , Núñez William Niebles , Ovallos-Gazabon David , Varela Noel
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded. To date, there is no evidence to suggest anyone other than Amelec Viloria / Jesus Silva was directly culpable for the actions that led to retraction.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Retraction: Time Series Decomposition using Automatic Learning Techniques for Predictive Models (Journal of Physics: Conference Series
1432 012096)
Authors: Silva Jesús , Palma Hugo Hernández , Núñez William Niebles , Ovallos-Gazabon David , Varela Noel
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded. To date, there is no evidence to suggest anyone other than Amelec Viloria / Jesus Silva was directly culpable for the actions that led to retraction.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Double charge exchange reactions as a probe for neutrinoless double beta decay nuclear matrix elements
Authors: Santopinto E. , Ferretti J. , García-Tecocoatzi H. , Magana Vsevolodovna R.
Published: September 2020

The formalism to describe heavy-ion double charge exchange (DCE) processes in the eikonal and small-momentum transfer approximations introduced in Phys. Rev. C 98, 061601(R) (2018) is briefly discussed. It is also shown that, under the previous approximations, the heavy-ion DCE cross-section can be factorized in terms of a reaction and a nuclear part. A double charge exchange effective potential is explicitly derived in the closure approximation and also for the first time the explicit form of the DCE nuclear matrix elements, that are of the form of double Gamow-Teller and double Fermi. The recent hypothesis of a linear correlation between double Gamow-Teller neutrinoless double beta decay and DCE nuclear matrix elements is confirmed thanks to the first explicit derivation of DCE nuclear matrix elements, and by means of microscopic IBM2 calculations.
Utilization of liquid smoke nanoencapsulation in fresh fish fillets as a preservation material
Authors: Swastawati F , Romadhon
Published: September 2020

Liquid smoke of coconut shell was process to produce nanoencapsulation using 10% of arabic gum (A), 10% of maltoodextrin (M) and mixed of 5% arabic gum + 5% of maltodextrin (AM). The products of all microencapsulation (A, M, AM) were then been analyzed in terms of : fenol content, pH, particel size, solution test, acid content, carbonyl content, and also their colour characteristic. After all, the nanoencapsulation were apllied into white snapper for 2% w/w stand for. The fish sample then evaluated in terms of their color and TVBN values. The result of total phenolic compound of nanocapsule were found about :0.72% - 0.95%, carbonyl compound :1.812% - 2.380, acid value :11.04mg/g - 22.82mg/g and pH value of :4.1 – 4.6. The bacterial count on the snapper fillets between 5,04 Log CFU/g to 5,82 Log CFU/g. The result suggested that nancapsules had spherical and wrinkle shape with an average size of nanocapsules of 28.03 nm.
Serious gaming for port development as a learning tool: a case study of port constructor
Authors: Ningrum A D , Van Schuylenburg M
Published: September 2020

Ports play an essential role in nation’s economic growth by fostering trade and development. Making a master plan for port development includes several actions that need to be taken before a final master plan is decided. Implementing such actions in a real situation as a try out for port development will result in time and financial loss, not to mention the effect to the environment and availability of space. Port Constructor is introduced last year as the newest tool to simulate all the planning and development process of a port and see the result of every action in relatively short time. Port Constructor is a serious game, it looks like a game, but it also has a learning objective that needs to be achieved. The primary function of this game is that players can take several actions, undertake tasks, and experience situations which would be impossible to be tried in a real life situation. In addition, Port Constructor allows players to have a position as a port planner and developer, which may not be possible in reality, and experience a real situation within a short period of time. By developing their own port scenario (or real-port scenario) in the Port Constructor, the player will have a real experience as a port planner. This study was conducted to assess the Port Constructor game as a learning tool in port planning and development both for student and more experienced port developers. Furthermore, this study also provides a way of developing scenarios inside the Port Constructor game as well as ensuring that the aim of this game can be achieved by doing a game session together with students and professionals participants. The game sessions were held to prove the playability of the game as a single-player and multi-player game. Resulting in a better outcome when the game played as a multi-player game because players can have a discussion before deciding the next actions that they will take. Examples of several port layouts are provided to prove the flexibility of this game that can be used to accommodate uncertainty of port development when using in the future. In conclusion, developers believe that Port Constructor can be a useful instrument for the learning process of people at the educational level as well as for port developers on their port planning course and project.
Mitigation of floodwaters inundation due to land subsidence in the coastal area of Semarang City
Authors: Widada Sugeng , Zainuri Muhammad , Yulianto Gatot , Satriadi Alfi , Jati Wijaya Yusuf , Helmi Muhammad
Published: September 2020

Semarang city is the capital of Central Java province, which is located on the cost. The Semarang coastal topography is flat, with slope percentage around 0-2%. Most area is almost the same as height as the sea level and in some places are lower. Environmetal problems faced by Semarang related to this topography area tidal inundation, land subsidence and flooding during rainy season. The research was conducted to model locations that area vulnerable to tide inundation. The data of spot height, countour line and the rate of subsidence were analyzed by using Geographic Information System (GIS). The results showed that the Semarang coastal had a high level of vulnerability to inundated area. Tidal flood inundation area was about 2,400 ha with depths varying from 1 to 66 cm. Mitigation of tide inundation impact must be adjusted to land use and social condition of the local community. The house on stilts or lightweight houses that are easy to dismantle pairs is one of the solutions that is suitable for fisherman residential areas. Whereas the trade and service areas must be carried out by raising of the building floor and making protective buildings from sea water.
Effect of ENSO and IOD on the Variability of Sea Surface Temperature (SST) in Java Sea
Authors: Wisetya Dewi Yunvita , Wirasatriya Anindya , Nugroho Sugianto Denny , Helmi Muhammad , Marwoto Jarot , Maslukah Lilik
Published: September 2020

El-Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) climate variability are global climate variability that can affect oceanographic conditions including SST (Sea Surface Temperature). Located between two oceans, the Indian and the Pacific, the variability of SST in Indonesia is influenced by ENSO and IOD. Previous studies have shown that the influence of ENSO in the Java Sea depends on the season, and while positive (negative) IOD decreases (increase) SST in Indonesian seas. This study aims to examine the effect of ENSO and IOD climate variability on the variability of SST in the Java Sea. SST data are obtained from NOAA Pathfinder and Aqua MODIS satellite image data, while wind data is obtained from ECMWF satellite imagery with long observed data for 36 years (1982-2017) using quantitative methods in spatial and temporal, we found that the influence of ENSO and IOD in Java Sea based on the intensity of the anomaly. The intensity of ENSO which is stronger can affect SST more than IOD.
Non-destructive freshness assessment of Cyprinus carpio based on image analysis
Authors: Bachrun Alim M , Suhaeli Fahmi A , Purnamayati Lukita , Agustini Tri W
Published: September 2020

Compared with existing chemical and microbiological analysis, image analysis as non-destructive quality assessment is promising a cheaper, faster process and also possible to capture data in real time. This study is aimed to determine the reliability of image analysis for assessing fish freshness in room temperature for 15 hours. Whole Cyprinus carpio were used as samples for image analysis, sensory analysis, chemical analysis (pH and TVBN) and microbiological analysis (TPC). Image analysis was focused on eye and gill. The results showed that fish freshness assessment using image analysis was in line with quality changes based on sensory, chemical and microbiological analysis. Image analysis of the eyes, showed that Value of HSV analysis and L of L, *a, *b analysis were increased. Image analysis of the gills showed that Hue, Saturation and Value of HSV analysis and *a and *b of L, *a, *b analysis were decreased while L* value was increased.
Fisheries industry strategy in Indonesia
Authors: Miar  , Firmansyah  , Oktavilia Shanty , Puspita Dita W , Prayogi Ryan
Published: September 2020

Over the past few years, fishery growth has always exceeded economic growth in Indonesia. Based on this performance, more focused policies are needed to manage it. This study aims to develop a strategy for the fishing industry, specifically related to the center of the fisheries processing industry in Indonesia, with a descriptive secondary data approach, including an analysis of the development of fisheries production base areas namely Location Quotient (LQ) and Shift Share Analysis (SSA) during 2013-2018. This study found that LQ scores were high in Maluku Province. The results indicate that related industries have a higher relative advantage than the average of all provinces, or also called basic industries. SSAs with positive scores occur in South Sulawesi Province, which shows that fisheries are a growing industry. Fisheries development strategies from this research include: (1) Improving coordination between sectors, (2) Identification and synchronization of industrial policies; (3) Developing areas that have more than one LQ as a basis for national fisheries; and (4) Selection of suitable industrial scale related to sustainable resources and regional superiority.
Competitiveness identification of fisheries export in Indonesia
Authors: Destiningsih Rian , Sugiharti Rr. Retno , Togar Laut Lorentino , Nur Safiah Sudati , Achsa Andhatu
Published: September 2020

Since the implementation of AFTA in 2003 and ACFTA in 2004, the fisheries sector is becoming discussed increasingly. AFTA and ACFTA is the door for international trade, especially import and export activities in Indonesia specifically in the fisheries sector. Besides, this sector is one of the labour-intensive sectors that absorbs a significant workforce. To prevent decreasing in export fisheries, competitiveness can be used as an indicator of trade level. This paper analysed the competitive and comparative advantage of Indonesian fisheries products for export destination country such as United States, Japan, ASEAN, China, and the European Union. Data used in this study were retrieved from BPS and World Bank between 2012 to 2017. This paper used several measurement methods to capture comparative advantage measures namely Trade Specialization Index (TSI), Revealed Comparative Advantage (RCA) and Export Product Dynamics (EPD) methods. If fisheries products prove high competitiveness, it can be expected to continue to exist and consistently grow. The results of this study indicate that competitiveness in fisheries sector still increases and encourages domestic production, with the end goal in public welfare. So that in the future, fisheries sector become one of the leading sectors in Indonesia.
Chemical, physical, and sensory characteristics of milkfish (Chanos chanos) and mung bean flour (Vigna radiata L.) simulations chips
Authors: Prabawa Sigit , Arrosyid Fadlilah , Yudhistira Bara
Published: September 2020

Diversification of food products, one of which can be applied to snacks. One type of snack that is quite successful in the market is the chips. To improve the value of the nutritive value of these chips is by making simulation chips. Based on the protein content of milkfish and mung beans are high then used as raw material for the manufacture of simulated chips. This study aims to determine the best simulation of milkfish and mung bean flour based on characteristics of chemical, physical, and sensory. Experimental design using in this research was Completely Randomized Design (CRD) with one factor, which was ratio variation of milkfish and mung bean flour. Based on the results of chemical, physical, and sensory analyzes obtained were analyzed statistically by using one way ANOVA method; if there was a difference, it was followed with a significance test using Duncan’s Multiple Range Test (DMRT) at a significance level of α = 0,05. Based on the results of the study showed the best formulation results on F3 (20% milled milkfish meat + 80% mung beans flour). Result of chemical analysis of simulation chips at F3 that is 3,53% wb of moisture content; 3,44% db of ash content; 25,78% db of fat content; 18,84% db of protein content; 51,93% db of carbohydrate content; 0.45% db of FFA content; 5,57% db of crude fiber content; and 527.17 kcal / 100 grams of total calories. Result of physical analysis of simulation chips on F3 that is 7,95 N of hardness and 92,97% of wholeness. While on the sensory analysis, the highest F3 value on parameters of color, texture, and overall.
The effect of high voltage electric shock on the quality attribute of carp fish (Cyprinus carpio) meat
Authors: Dwi Anggo Apri , Suharto Slamet
Published: September 2020

Carp is one of the commercial freshwater fish and requires good preservation to maintain the quality of the meat. The non-thermal food preservation method that is still being developed is by using a high voltage electric shock or often called Pulse Electric Field (PEF). The research on the treatment of electric shock using PEF on carp meat has been done. This study aimed to measure the effect of high voltage electric shock on the quality of the carp fish meat. Fresh carp meat fillets were given exposure to electric shock (30 kV, 60 kV, and 90 kV; frequency 50 Hz; pulse width 0.4 s; 600 pulses) when compared with untreated as a control. The data of log total plate count (TPC) and other quality attributes were analyzed by ANOVA and advanced test with Honesly Significance Different (HSD), while non-parametric data were analyzed using Kruskal-Wallis and Mann-Whitney test. The result showed that in untreated meat fish, the log of TPC is higher than threated meat and significantly different (P < 0.05) at untreated with the treated samples. The electric shock treatment caused temperature increment from 3.3+0.7°C until 5.6+1.3°C but not significantly different between samples. Moisture content decreased significantly due to high voltage electric shock treatment. pH values ranged from 6.46+0.20 to 6.62+0.23 and were not significantly different between treatment. Meat with electric shock treated showed significantly different (P<0.05) on weight loss but not in cooking loss. There are no significant differences in hedonic value except tenderness with 60kV. On the microstructure, the treated meat looks more porous than untreated meat. It is indicating that high voltage electric shock processing was effective in the maintenance of carp meat qualities.
The morphological variance Polymesoda erosa and Polymesoda expansa (Mollusc; Corbiculidae) in the Laguna Segara Anakan, Cilacap, Indonesia
Authors: Widianingsih Widianingsih , Hartati Retno , Azizah Tri Nuraeni Ria , Riniatsih Hadi Endrawati Ita , Redjeki Sri
Published: September 2020

There are two species of mangrove clam (Polymesoda erosa and Polymesoda expansa) belong to family Corbiculidae). Morphological variance between Polymesoda erosa and Polymesoda expansa is important to study detail in order to make understand taxonomy study of family Corbiculidae. The research purpose is to study detail abaut the morphological of Polymesoda erosa and Polymesoda expansa . Randomly sampling was used to get samples of mangrove clam. There are three sites of sampling to take mangrove clam such as Panikel, Klaces and Ujung Alang. According to the research sampling, Polymesoda erosa from Panikel, Klaces and Ujung alang has same ratio value between LCT/SL is 0.16 ± 0.035. Whereas, for P. expansa has value LCT/SL 0.14 ± 0.025. Furthermore, P. erosa has value VPM/SL 0.32 for three location (Panikel, Klaces, and Ujung Alang ). The value of VPM/SL for P. expansa is 0.30 ± 0.02 for three location (Panikel and Ujung Alang). . In conclusion, different species of mangrove clam is difference value ratio of LCT/SL and VPM/SL.
Analysis of mangrove forest changes as a natural beach protection in Surabaya, East Java Indonesia
Authors: Wardhani A K , Zikra M
Published: September 2020

Surabaya is the most populous city in East Java with high human activities and needs. These human needs include opening new land for residential areas so that some mangrove areas began to be converted into residential areas. This activity can directly cause ecological impacts and threaten the sustainability of the coastal environment. On the other hand, mangrove areas in Surabaya are also developed for conservation and tourism areas. The purpose of this study is to determine the changes in mangrove area in the Surabaya area during the period 2015 to 2019 based on GIS. This study is using maximum likelihood classification method then the area calculation is done by calculate geometric method. The results were obtained from 2015 to 2019 shows an area change every year. So far the exact cause is unknown, but the condition of area changes can occur due to several things, for example from the conversion of mangrove forests to residential areas, drainage needs in rivers or estuaries and stand growth.