bluuebunny/crossref_metadata_2025 huggingface dataset:
Vortex ferroelectric domains, large-loop weak ferromagnetic domains, and their decoupling in hexagonal (Lu, Sc)FeO3
Authors: Du Kai , Gao Bin , Wang Yazhong , Xu Xianghan , Kim Jaewook , Hu Rongwei , Huang Fei-Ting , Cheong Sang-Wook
Published: June 2018

The direct domain coupling of spontaneous ferroelectric polarization and net magnetic moment can result in giant magnetoelectric (ME) coupling, which is essential to achieve mutual control and practical applications of multiferroics. Recently, the possible bulk domain coupling, the mutual control of ferroelectricity (FE) and weak ferromagnetism (WFM) have been theoretically predicted in hexagonal LuFeO3. Here, we report the first successful growth of highly-cleavable Sc-stabilized hexagonal Lu0.6Sc0.4FeO3 (h-LSFO) single crystals, as well as the first visualization of their intrinsic cloverleaf pattern of vortex FE domains and large-loop WFM domains. The vortex FE domains are on the order of 0.1–1 μm in size. On the other hand, the loop WFM domains are ~100 μm in size, and there exists no interlocking of FE and WFM domain walls. These strongly manifest the decoupling between FE and WFM in h-LSFO. The domain decoupling can be explained as the consequence of the structure-mediated coupling between polarization and dominant in-plane antiferromagnetic spins according to the theoretical prediction, which reveals intriguing interplays between FE, WFM, and antiferromagnetic orders in h-LSFO. Our results also indicate that the magnetic topological charge tends to be identical to the structural topological charge. This could provide new insights into the induction of direct coupling between magnetism and ferroelectricity mediated by structural distortions, which will be useful for the future applications of multiferroics.
Next generation sequencing identifies novel disease-associated BEST1 mutations in Bestrophinopathy patients
Authors: Nguyen Thong T. , Poornachandra B. , Verma Anshuman , Mehta Ruchir A. , Phalke Sameer , Battu Rajani , Ramprasad Vedam L. , Peterson Andrew S. , Ghosh Arkasubhra , Seshagiri Somasekar
Published: June 2018

Bestinopathies are a spectrum of retinal disorders associated with mutations in BEST1 including autosomal recessive bestrophinopathy (ARB) and autosomal dominant Best vitelliform macular dystrophy (BVMD). We applied whole-exome sequencing on four unrelated Indian families comprising eight affected and twelve unaffected individuals. We identified five mutations in BEST1, including p.Tyr131Cys in family A, p.Arg150Pro in family B, p.Arg47His and p.Val216Ile in family C and p.Thr91Ile in family D. Among these, p.Tyr131Cys, p.Arg150Pro and p.Val216Ile have not been previously reported. Further, the inheritance pattern of BEST1 mutations in the families confirmed the diagnosis of ARB in probands in families A, B and C, while the inheritance of heterozygous BEST1 mutation in family D (p.Thr91Ile) was suggestive of BVMD. Interestingly, the ARB families A and B carry homozygous mutations while family C was a compound heterozygote with a mutation in an alternate BEST1 transcript isoform, highlighting a role for alternate BEST1 transcripts in bestrophinopathy. In the BVMD family D, the heterozygous BEST1 mutation found in the proband was also found in the asymptomatic parent, suggesting an incomplete penetrance and/or the presence of additional genetic modifiers. Our report expands the list of pathogenic BEST1 genotypes and the associated clinical diagnosis.
Author Correction: A Novel S100A8/A9 Induced Fingerprint of Mesenchymal Stem Cells associated with Enhanced Wound Healing
Authors: Basu Abhijit , Munir Saira , Mulaw Medanie A. , Singh Karmveer , Crisan Diana , Sindrilaru Anca , Treiber Nicolai , Wlaschek Meinhard , Huber-Lang Markus , Gebhard Florian , Scharffetter-Kochanek Karin
Published: June 2018

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Zika Virus Replication in Dorsal Root Ganglia Explants from Interferon Receptor1 Knockout Mice Causes Myelin Degeneration
Authors: Volpi Vera Giulia , Pagani Isabel , Ghezzi Silvia , Iannacone Matteo , D’Antonio Maurizio , Vicenzi Elisa
Published: June 2018

Zika virus (ZIKV) is a neurotropic agent that targets the developing fetal brain in women infected during pregnancy. In addition to the developing central nervous system, ZIKV has been recently shown to infect cells of the peripheral nervous system (PNS), highlighting its potential to cause acute peripheral neuropathies in adults, such as Guillain-Barré Syndrome (GBS). Here we show that myelinating dorsal root ganglia (DRG) explants obtained from interferon-alpha/beta receptor knock-out mice are productively infected by ZIKV. Virus replication is cytopathic in both peripheral neurons and myelinating Schwann cells leading to myelin disruption. These results confirm and extend previous observations suggesting that the PNS is indeed a potential site of ZIKV infection, replication and cytopathicity.
Source localisation and its uncertainty quantification after the third DPRK nuclear test
Authors: De Meutter Pieter , Camps Johan , Delcloo Andy , Termonia Piet
Published: June 2018

The International Monitoring System is being set up aiming to detect violations of the Comprehensive Nuclear-Test-Ban Treaty. Suspicious radioxenon detections were made by the International Monitoring System after the third announced nuclear test conducted by the Democratic People’s Republic of Korea (DPRK). In this paper, inverse atmospheric transport and dispersion modelling was applied to these detections, to determine the source location, the release term and its associated uncertainties. The DPRK nuclear test site was found to be a likely source location, though a second likely source region in East Asia was found by the inverse modelling, partly due to the radioxenon background from civilian sources. Therefore, techniques to indirectly assess the influence of the radioxenon background are suggested. In case of suspicious radioxenon detections after a man-made explosion, atmospheric transport and dispersion modelling is a powerful tool for assessing whether the explosion could have been nuclear or not.
Effects of climate and potential policy changes on heating degree days in current heating areas of China
Authors: Shi Ying , Wang Guiling , Gao Xuejie , Xu Ying
Published: June 2018

Based on climate simulations over East Asia from a high-resolution regional climate model under RCP4.5 and 8.5 scenarios, we examine the impact of future climate change and heating policy changes on energy demand in current central heating areas over China using the heating degree days (HDD) and the number of the heating days (NHD) with different base temperature as the indices. Based on current heating policy in China, significant decreases of NHDs are projected, with larger decreases under RCP8.5 than RCP4.5. This decrease of NHDs would cause a northward shift of the decadal heating boundary line, with significant implications for infrastructure planning and development. Changing the heating policy currently in practice to one used in Europe and USA would cause an immediate jump in NHDs and in HDDs; as warming progresses in the future, these effects attenuate with time in an approximately linear trend under the two scenarios. Under RCP8.5, by 2050, the effects of warming climate would dominate over the heating policy change, and heating demand would be lower than the present day HDD and continue to decrease until the end of the century. Energy demand and the number of the heating days during peak winter shows no dependence on heating policy, as the policy-induced increase of energy demand would occur primarily during warmer months of the year. In addition, the indices are further weighted by population, and results show that increases in both HDDs and NHDs can be found in parts of northern China due to the increased population there by the end of the 21st century.
A prospective, randomized, double-blind, placebo-controlled trial of acute postoperative pain treatment using opioid analgesics with intravenous ibuprofen after radical cervical cancer surgery
Authors: Liu Xintong , Wang Xifan , Zhao Wenshuai , Wei Lanying , Zhang Pengjiao , Han Fei
Published: June 2018

This study assessed the efficacy and tolerability of intravenous ibuprofen in the improvement of post-operative pain control and the reduction of opioid usage. Patients were randomly divided into placebo, ibuprofen 400 mg and ibuprofen 800 mg groups. All patients received patient-controlled intravenous morphine analgesia after surgery. The first dose of study drugs was administered intravenously 30 min before the end of surgery and then every 6 hours, for a total of 8 doses after surgery. The primary endpoint of this study was the mean amount of morphine used during the first 24 hours after surgery. Morphine use was reduced significantly in the ibuprofen 800 mg group compared with the placebo group (P = 0.04). Tramadol use was reduced significantly in the ibuprofen 400 mg and ibuprofen 800 mg groups compared with the placebo group (P < 0.01). The area under the curve of visual analog scale pain ratings was not different between groups. Safety assessments and side effects were not different between the three groups. Intravenous ibuprofen 800 mg was associated with a significant reduction in morphine requirements, and it was generally well tolerated for postoperative pain management in patients undergoing radical cervical cancer surgery.
Comparison of the expression of cluster of differentiation (CD)39 and CD73 between propofol- and sevoflurane-based anaesthesia during open heart surgery
Authors: Oh Chung-Sik , Kim Karam , Kang Woon-Seok , Woo Nam-Sik , Kang Po-Soon , Kim Jun-Seok , Kim Hang-Rae , Lee Seung-Hyun , Kim Seong-Hyop
Published: June 2018

High expression of cluster of differentiation (CD)39 and CD73 has cardio-protective effects. We hypothesised that the expression of CD39 and CD73 would differ between propofol- and volatile anaesthetic-based anaesthesia in patients undergoing open heart surgery (OHS). The objective of this prospective randomized trial was to compare the changes in CD39 and CD73 levels in CD4+ T cells between propofol- and sevoflurane-based anaesthesia during OHS. The study randomly allocated 156 patients undergoing OHS to a propofol or sevoflurane group. Blood was obtained preoperatively and up to 48 hours after weaning from cardiopulmonary bypass (CPB). The expression levels of CD39 and CD73 in circulating CD4+ T cells, serum cytokines and other laboratory parameters were analysed. The primary outcome was the expression of CD39 and CD73 on CD4+ T cells. Demographic data and perioperative haemodynamic changes did not show significant differences between the two groups. The expression of CD39 and CD73 in the sevoflurane group was significantly lower than in the propofol group (P < 0.001). Other laboratory findings including cardiac enzymes and cytokine levels, did not show significant intergroup differences. Propofol attenuated the decrease in CD39 and CD73 in circulating CD4+ T cells compared to sevoflurane-based anaesthesia during OHS.
The HTPmod Shiny application enables modeling and visualization of large-scale biological data
Authors: Chen Dijun , Fu Liang-Yu , Hu Dahui , Klukas Christian , Chen Ming , Kaufmann Kerstin
Published: June 2018

The wave of high-throughput technologies in genomics and phenomics are enabling data to be generated on an unprecedented scale and at a reasonable cost. Exploring the large-scale data sets generated by these technologies to derive biological insights requires efficient bioinformatic tools. Here we introduce an interactive, open-source web application (HTPmod) for high-throughput biological data modeling and visualization. HTPmod is implemented with the Shiny framework by integrating the computational power and professional visualization of R and including various machine-learning approaches. We demonstrate that HTPmod can be used for modeling and visualizing large-scale, high-dimensional data sets (such as multiple omics data) under a broad context. By reinvestigating example data sets from recent studies, we find not only that HTPmod can reproduce results from the original studies in a straightforward fashion and within a reasonable time, but also that novel insights may be gained from fast reinvestigation of existing data by HTPmod.
Boc-Val-Val-OMe (Aβ39–40) and Boc-Ile-Ala-OMe (Aβ41–42) crystallize in a parallel β-sheet arrangement but generate a different morphology
Authors: Giri Rajat Subhra , Mandal Bhubaneswar
Published: June 2018

Crystal structures and morphologies of Boc-Val-Val-OMe (Aβ39–40) and Boc-Ile-Ala-OMe (Aβ41–42), the two consecutive dipeptides of the C-terminus of Aβ, are reported.
A well-grown β-Ga2O3 microrod array formed from GaOOH on a Si (100) substrate and growth mechanism study
Authors: Zhang Junhua , Jiao Shujie , Wan Yongbiao , Gao Shiyong , Wang Dongbo , Wang JinZhong
Published: June 2018

A simple two-step hydrothermal method was used to successfully fabricate a well-grown β-Ga2O3 microrod array from GaOOH on a Si (100) substrate without other heterogeneous layers.
Spontaneous resolution of a Δ/Λ-chiral-at-metal pseudo-tetrahedral Schiff-base zinc complex to a racemic conglomerate with C–H⋯O organized 41- and 43-helices
Authors: Enamullah Mohammed , Vasylyeva Vera , Quddus Mohammad Abdul , Islam Mohammad Khairul , Höfert Simon-Patrick , Janiak Christoph
Published: June 2018

Weak supramolecular interactions can be decisive!
Theoretical studies on the oxidation states and electronic structures of actinide-borides: AnB12 (An = Th–Cm) clusters
Authors: Hu Shu-Xian , Chen Mingyang , Ao Bingyun
Published: June 2018

The electronic structures of actinide metal doped half sandwich AnB12 (An = Th to Cm) clusters are explored and characterized using relativistic density functional theory. The trend of oxidation state across the actinide series in AnB12 exhibits two turning points, +V in Pa and +II in Am.
Molecular dynamics simulation of the electrical conductive network formation of polymer nanocomposites with polymer-grafted nanorods
Authors: Li Fanzhu , Duan Xiaohui , Zhang Huan , Li Bin , Liu Jun , Gao Yangyang , Zhang Liqun
Published: June 2018

Grafting chains on the surface of a filler is an effective strategy to tune and control the filler conductive network, which can be utilized to fabricate polymer nanocomposites (PNCs) with high electrical conductivity.
Tuning the Pd-catalyzed electroreduction of CO2to CO with reduced overpotential
Authors: Han Zishan , Choi Changhyeok , Tao Hengcong , Fan Qun , Gao Yuannan , Liu Shizhen , Robertson Alex W. , Hong Song , Jung Yousung , Sun Zhenyu
Published: June 2018

The electrochemical CO2reduction to CO can be greatly enhanced by controlling the Pd–ceria interface and doping with tellurium atoms.
Simple generation of a dirhodium μ-carbido complex via thiocarbonyl reduction
Authors: Barnett Harrison J. , Burt Liam K. , Hill Anthony F.
Published: June 2018

The reaction of [RhCl(CS)(PPh3)2] with excess catecholborane affords the cumulenic carbido complex [Rh2(μ-C)Cl2(PPh3)4] which undergoes phosphine and halide substitution to afford a range of complexes in which the RhCRh spine remains intact.
Complex coacervation of natural sophorolipid bolaamphiphile micelles with cationic polyelectrolytes
Authors: Ben Messaoud Ghazi , Promeneur Lyndsay , Brennich Martha , Roelants Sophie L. K. W. , Le Griel Patrick , Baccile Niki
Published: June 2018

Yeast-derived sophorolipid biosurfactant and cationic polyelectrolytes form pH-depenedent complex coacervates in water.
Synthesis and pre-clinical evaluation of a potential radiotracer for PET imaging of the dopamine D3 receptor
Authors: Stewart Megan N. , Shao Xia , Desmond Timothy J. , Forrest Taylor J. , Arteaga Janna , Stauff Jenelle , Scott Peter J. H.
Published: June 2018

There is considerable interest in using PET imaging to quantify dopamine D3 receptors. We report a new D3-selective radioligand, and describe preclincial evaluation in rodent using ex vivo autoradiography and in vivo PET imaging.
Selective and highly efficient synthesis of xanthenedione or tetraketone derivatives catalyzed by ZnO nanorod-decorated graphene oxide
Authors: Hasanzadeh Banakar Sepideh , Dekamin Mohammad G. , Yaghoubi Amene
Published: June 2018

A new and efficient method for the pseudo three-component synthesis of diverse tetraketone or xanthenedione derivatives has been described in the presence of ZnO nanorods decorated graphene oxide.
Single-stranded templates as railroad tracks for hierarchical assembly of DNA origami
Authors: Rahbani Janane F. , Hsu John C. C. , Chidchob Pongphak , Sleiman Hanadi F.
Published: June 2018

Long DNA strands consisting of repetitive sequences are valuable tools to build organized DNA nanostructures. This approach produces higher-order origami structures with prescribed length and addressability and provides a unique platform for the modular re-organization of any of their parts.
Development of a thermosensitive protein conjugated nanogel for enhanced radio-chemotherapy of cancer
Authors: Maiti Debabrata , Chao Yu , Dong Ziliang , Yi Xuan , He Jinlin , Liu Zhuang , Yang Kai
Published: June 2018

We develop chemically cross-linked poly-N,N′-dimethyl aminoethyl methacrylate (PDMAEMA) smart nanogel as an excellent thermosensitive nanocarrier to load both anticancer drug, doxorubicine (DOX), and radioisotope131I-labeled albumin for enhanced chemo-radioisotope therapy.
Thetrans/cisphotoisomerization in hydrogen bonded complexes with stability controlled by substituent effects: 3-(6-aminopyridin-3-yl)acrylate case study
Authors: Kwiatkowski Adam , Jędrzejewska Beata , Józefowicz Marek , Grela Izabela , Ośmiałowski Borys
Published: June 2018

The association of aminopyridine-based acrylic acid and its salt was studied by NMR titration experiments.
Superhydrophobic coatings on gelatin-based films: fabrication, characterization and cytotoxicity studies
Authors: Chen Yu , Lu Weipeng , Guo Yanchuan , Zhu Yi , Lu Haojun , Wu Yuxiao
Published: June 2018

As a degradable natural biomaterial, gelatin has good biocompatibility and nontoxicity, but gelatin is easily soluble in water which has limited its application.
Silylated cyclopentadienes as competent silicon Lewis acid catalysts
Authors: Radtke M. Alex , Lambert Tristan H.
Published: June 2018

Silicon Lewis acid donor catalysts incorporating highly electron-deficient cyclopentadienes are shown to catalyze C–C bond formation via anion abstraction.
Contribution of electrolyte in nanoscale electrolysis of pure and buffered water by particulate photocatalysis
Authors: Qureshi Muhammad , Garcia-Esparza Angel T. , Shinagawa Tatsuya , Sautet Philippe , Le Bahers Tangui , Takanabe Kazuhiro
Published: June 2018

Quantitative description of electrolyte impact is established for nanoscale water electrolysis prevalent during photocatalytic overall water splitting.
Structure, interactions and action of Mycobacterium tuberculosis 3-hydroxyisobutyric acid dehydrogenase
Authors: Srikalaivani Rajapiramuthu , Singh Amrita , Vijayan Mamannamana , Surolia Avadhesha
Published: June 2018

Biochemical and crystallographic studies on Mycobacterium tuberculosis 3-hydroxyisobutyric acid dehydrogenase (MtHIBADH), a member of the 3-hydroxyacid dehydrogenase superfamily, have been carried out. Gel filtration and blue native PAGE of MtHIBADH show that the enzyme is a dimer. The enzyme preferentially uses NAD+ as the cofactor and is specific to S-hydroxyisobutyric acid (HIBA). It can also use R-HIBA, l-serine and 3-hydroxypropanoic acid (3-HP) as substrates, but with much less efficiency. The pH optimum for activity is ∼11. Structures of the native enzyme, the holoenzyme, binary complexes with NAD+, S-HIBA, R-HIBA, l-serine and 3-HP and ternary complexes involving the substrates and NAD+ have been determined. None of the already known structures of HIBADH contain a substrate molecule at the binding site. The structures reported here provide for the first time, among other things, a clear indication of the location and interactions of the substrates at the active site. They also define the entrance of the substrates to the active site region. The structures provide information on the role of specific residues at the active site and the entrance. The results obtained from crystal structures are consistent with solution studies including mutational analysis. They lead to the proposal of a plausible mechanism of the action of the enzyme.
Structural insights into lethal contractural syndrome type 3 (LCCS3) caused by a missense mutation of PIP5Kγ
Authors: Zeng Xuankun , Uyar Arzu , Sui Dexin , Donyapour Nazanin , Wu Dianqing , Dickson Alex , Hu Jian
Published: June 2018

Signaling molecule phosphatidylinositol 4,5-bisphosphate is produced primarily by phosphatidylinositol 4-phosphate 5-kinase (PIP5K). PIP5K is essential for the development of the human neuronal system, which has been exemplified by a recessive genetic disorder, lethal congenital contractural syndrome type 3, caused by a single aspartate-to-asparagine mutation in the kinase domain of PIP5Kγ. So far, the exact role of this aspartate residue has yet to be elucidated. In this work, we conducted structural, functional and computational studies on a zebrafish PIP5Kα variant with a mutation at the same site. Compared with the structure of the wild-type (WT) protein in the ATP-bound state, the ATP-associating glycine-rich loop of the mutant protein was severely disordered and the temperature factor of ATP was significantly higher. Both observations suggest a greater degree of disorder of the bound ATP, whereas neither the structure of the catalytic site nor the Km toward ATP was substantially affected by the mutation. Microsecond molecular dynamics simulation revealed that negative charge elimination caused by the mutation destabilized the involved hydrogen bonds and affected key electrostatic interactions in the close proximity of ATP. Taken together, our data indicated that the disease-related aspartate residue is a key node in the interaction network crucial for effective ATP binding. This work provides a paradigm of how a subtle but critical structural perturbation caused by a single mutation at the ATP-binding site abolishes the kinase activity, emphasizing that stabilizing substrate in a productive conformational state is crucial for catalysis.
Adaptive resource management in multiple targets tracking for co‐located multiple input multiple output radar
Authors: Cheng Ting , Li Shuyi , Zhang Jie
Published: June 2018

Co‐located multiple input multiple output (MIMO) radar is one kind of new style radar, whose transmitting waveforms of each sub‐array are orthogonal to each other. Compared with phased array radar, its beam width is wider. Therefore, different targets may be illuminated simultaneously with one beam in co‐located MIMO radar. An adaptive resource management in tracking for co‐located MIMO radar is proposed, where the sub‐array number, the illuminated targets set and the transmitting waveform of the system can be controlled. The optimal parameters are chosen according to a cost function that takes both the desired tracking precision and consumed energy into consideration. Simulation results demonstrate the effectiveness of the algorithm. Using the algorithm, co‐located MIMO radar can achieve the desired tracking precision with less cost compared with phased array radar.
Gaia Data Release 2
Authors: Lanzafame A. C. , Distefano E. , Messina S. , Pagano I. , Lanza A. F. , Eyer L. , Guy L. P. , Rimoldini L. , Lecoeur-Taibi I. , Holl B. , Audard M. , de Fombelle G. J. , Nienartowicz K. , Marchal O. , Mowlavi N.
Published: June 2018

Context. Amongst the ≈5 × 105 sources identified as variable stars in Gaia Data Release 2 (DR2), 26% are rotational modulation variable candidates of the BY Dra class. Gaia DR2 provides their multi-band (G, GBP, and GRP) photometric time series collected by the European Space Agency spacecraft Gaia during the first 22 months of operations as well as the essential parameters related to their flux modulation induced by surface inhomogeneities and rotation.

Aims. We developed methods to identify the BY Dra variable candidates and to infer their variability parameters.

Methods. BY Dra candidates were pre-selected from their position in the Hertzsprung–Russel diagram, built from Gaia parallaxes, G magnitudes, and (GBP − GRP) colours. Since the time evolution of the stellar active region can disrupt the coherence of the signal, segments not much longer than their expected evolution timescale were extracted from the entire photometric time series, and period search algorithms were applied to each segment. For the Gaia DR2, we selected sources with similar periods in at least two segments as candidate BY Dra variables. Results were further filtered considering the time-series phase coverage and the expected approximate light-curve shape.

Results. Gaia DR2 includes rotational periods and modulation amplitudes of 147 535 BY Dra candidates. The data unveil the existence of two populations with distinctive period and amplitude distributions. The sample covers 38% of the whole sky when divided into bins (HEALPix) of ≈0.84 square degrees, and we estimate that this represents 0.7–5% of all BY Dra stars potentially detectable with Gaia.

Conclusions. The preliminary data contained in Gaia DR2 illustrate the vast and unique information that the mission is going to provide on stellar rotation and magnetic activity. This information, complemented by the exquisite Gaia parallaxes, proper motions, and astrophysical parameters, is opening new and unique perspectives for our understanding of the evolution of stellar angular momentum and dynamo action.
Post-Installation: Insight of coastal-area society in Hybrid Electric Power Systems (HEPS) of Pantai Baru, Yogyakarta
Authors: Widhyharto Derajad S.
Published: June 2018

The Hybrid Electric Power Systems project is a pilot renewable energy project of the Indonesian Ministry of Research and Technology since 2010. Hybrid power (windmill and solar cell) was chosen because of their huge heat and wind potential in coastal area of Pantai Baru. Post-installation is critical, considering the existence of alternative energy was expected to bring changes in the life of coastal people nearby. Participatory Action Research (PAR) was the method used to do deeper exploration of the changes happened after the hybrid electric power installation in Pantai Baru. Coastal society had a bigger dependency on natural resources and secluded from any technology development, including the hybrid power itself. The use of PAR method reversed the top down logic by the Indonesian Ministry of Research and Technology with the bottom up logic, adjust the people’s needs which processed from the grassroots. This research was conducted in three years, using three approaches; exploration, reflection, and action. Through these approaches, it was possible for the researchers to understand the actual condition of coastal society and chose the women groups as the main informants as well as the main group which got the biggest benefits of the Hybrid Electric Power Systems (HEPS), they were capable of giving fast responses on the changes happened through the culinary, tourism, fishpond, etc. This condition emphasized both the central role of women and the knot of all dynamics of the HEPS installation. In conclusion, women groups positioned themselves as the transformation agent of the usage of this renewable energy around HEPS Pantai Baru. As the main beneficiaries, women groups had improved their capability to adapt. It increased the income, consumption level, etc. Despite the success of the adaptation, they were still failing their position as the agents and users of the renewable energy. Their existence was limited merely to objects/beneficiaries, instead of being the subjects/actors of the HEPS technology. This study is essential as a data baseline, prepare the policy of technology intervention as well renewable energy campaign.
Mass and Energy Balance Analysis of Methanol Production Using Atmospheric CO2 Capture with Energy Source from PCMSR
Authors: Harto Andang W. , Soelanda Mella
Published: June 2018

The rising of atmospheric CO2 concentration is the major source to global warming system. Many methods have been proposed to mitigate global warming, such as carbon penalty, carbon trading, CO2 sequestration, etc. However these proposed methods are usually uneconomical, i.e., these methods do not produce economic valuable substances. This paper will propose a method to absorb atmospheric CO2 to produce economic valuable substances such as methanol, dimethyl ether, ethylene, several hydrocarbon substances and derivatives and several graphite substances. This paper is focused on methanol production using atmospheric CO2 capture. The overall process is endothermic. Thus a sufficient energy source is needed. To avoid more CO2 emission, the energy source must not use conventional fuels. To assure the continuity of energy deliberation, nuclear energy will be used as the energy source of the process. In this paper, the Passive Compact Molten Salt Reactor (PCMSR) will be used as the energy source. The 460 MWth PCMSR is coupled with atmospheric CO2 capture, desalination, hydrogen production and methanol production facilities. The capturing CO2 capacity is 7.2 ton/h of atmospheric CO2. The valuable outputs of this system are 3.34 ton/h of H2, 34.56 ton/h of O2, 5.24 ton/h of methanol and 86.74 MWe of excess electricity.
The Study of System Planning of Assets Security on Marine Current Renewable Energy
Authors: Wardani Arinta Y. , Prananda Juniarko , Arief Irfan S. , Suherman Irwan H.
Published: June 2018

Assets have a tendency to be the emergence of potential failures, with the exception of the components in the Marine Current Renewable Energy. The design review of it, related to indications of harm due to environmental conditions. Indications of the failure of the equipment are required to maintain the condition and quality. Problem Identification by Failure Mode Effect Analysis (FMEA) is needed to establish it’s components which have a high potential failure. The potential failure of these components will be given as monitoring and specific control systems. Therefore, this research presents node components that need to be secured assets to provide security systems in critical condition with Risk Priority Number (RPN).
An application of statistical modelling on power generating asset performance analysis at the Asam-asam steam power plant of South Kalimantan
Authors: Mursadin Aqli
Published: June 2018

A power generating system in a steam power plant is a complex one. This system involves a large number of variables containing information concerning the operation conditions. It can also be seen as an important asset in both power generation and energy portfolios. At the Asam-asam power plant of South Kalimantan, the complexity of the system has led to difficulties in explaining the apparently steady decrease in the output power. The amount of data collected is simply too big and the dimension too high for analysis purposes based on conventional thermodynamics. This study was performed to tackle the problem using statistical modelling. This approach can accommodate empirical behaviors of the variables and the probabilistic nature of the system. Information obtained from this modelling can be valuable for various purposes. The method consists of literature review, model development, data collection and analysis, and model fitting. Generalized additive models were chosen. Data were available from the company as observed from more than 140 variables. The resulting model identifies variables significantly related to the output power and locate subsystems whose fluctuating behaviors are usually ignored in a conventional thermodynamic analysis. A direction for future research is recommended.
Analysis of Back Surface Field (BSF) Performance in P-Type And N-Type Monocrystalline Silicon Wafer
Authors: Ferdiansjah  , Faridah  , Tirtakusuma Mularso Kelvian
Published: June 2018

Back Surface Field (BSF) has been used as one of means to enhance solar cell performance by reducing surface recombination velocity (SRV). One of methods to produce BSF is by introducing highly doped layer on rear surface of the wafer. Depending on the type of the dopant in wafer, the BSF layer could be either p+ or n+. This research aims to compare the performance of BSF layer both in p-type and n-type wafer in order to understand the effect of BSF on both wafer types.

Monociystalline silicon wafer with thickness of 300 μm. area of 1 cm2, bulk doping level NB = 1.5×1016/cm3 both for p-type wafer and n-type wafer are used. Both wafer then converted into solar cell by adding emitter layer with concentration NE =7.5×1018/cm3 both for p-type wafer and n-type wafer. Doping profile that is used for emitter layer is following complementary error function (erfc) distribution profile. BSF concentration is varied from 1×1017/cm3 to 1×1020/cm3 for each of the cell. Solar cell performance is tested under standard condition, with AM1.5G spectrum at 1000 W/m2. Its output is measured based on its open circuit voltage (Voc). short circuit current density (JSC), efficiency (η). and fill factor (FF).

The result shows that the value of VOC is relatively constant along the range of BSF concentration, which is 0.694 V – 0.702 V. The same pattern is also observed in FF value which is between 0.828 – 0.831. On the other hand, value of JSC and efficiency will drop against the increase of BSF concentration. Highest JSC which is 0.033 A/cm2 and highest efficiency which is 18.6% is achieved when BSF concentration is slightly higher than bulk doping level. The best efficiency can be produced when BSF concentration is around 1×1017cm-3.. This result confirms that surface recombination velocity has been reduced due to the increase in cell’s short circuit current density and its efficiency.

In general both p-type and n-type wafer will produce higher efficiency when BSF is applied. However, the increase is larger in p-type wafer than in n-type wafer. Better performance for solar cell is achieved when BSF concentration is slightly higher that bulk doping level because at very high BSF concentration the cell’s efficiency will be decreased.
Design And Implementation Soft-switching MPPT SEPIC Converter Using P&O Algorithm
Authors: Luki Septya M , Sudiharto Indhana , Syechu Dwitya N , Asrarul Qudsi Ony , Sunarno Epyk
Published: June 2018

This paper presents details of design and implementation of Maximum Power Point Tracking (MPPT) SEPIC Converter to maximize Photovoltaic (PV) power output. Perturb and observe (P & O) algorithm has been used as a tracking technique to determine MPPT. This algorithm are simple and efficient to determine the maximum power point (MPP). The soft-switching method will be added to the implementation of MPPT SEPIC Converter to reduce switching losses. The results show that the proposed MPPT method implementation can increase the output power of PV.
Demand Simulation for Water, Food Irrigation, and Energy from Micro Hydro Power Plant in Sungai Bayang, Bayang Utara, Pesisir Selatan West Sumatra
Authors: Nurlaila Indriani Siti , Agus Setiawan Ahmad , Budiarto Rachmawan
Published: June 2018

Clean water or fresh water, food and energy are basic human needs. The three basic needs are dependent to one another. The relationship between the three is called the "The nexus of Water, Energy, and Food". It requires good governance on watershed which will be implemented for example to manage water resources to fulfil demand of clean or drinking water, irrigation in food area and energy sources in hydro power plant. This study conducted analysis and simulation to prepare projection of electricity produced by Micro hydro Power Plant (MHP) It integrates a climate change scenarios to forecast its influence on electricity demand and response of river. In addition, the study also presented projections of influence on irrigated food production scenario in irrigation for rice paddy fields. Projection of The MHP electricity and the water demand including for the food sector is conducted by using the WEAP (Water Evaluation and Planning) software, while electricity demand forecast is conducted by applying the LEAP (Long-Range Energy Alternatives Planning) software. The case studies in this study conducted in river flows Bayang’s River. On the river there are three operating MHPs: The Muaro Aie MHP (ity30 kW of installed capac), The Koto Ranah MHP (30 kW) and The Pancuang Taba MHP (40 kW). The LEAP simulation projected electricity demand for Pesisir Selatan until 2025. Demand for South Pesisir Regency up to 2025 is predicted to reach 226.4 GWh with growth of 11.2% per year in BAU scenario, while reach 113.7 GWh with a 5% annual growth in efficiency scenario. The WEAP provided projected electricity production of MHP, basic water needs and irrigation needs for paddy fields in District IV Nagari Bayang Utara until 2025. The MHP electricity production in final year of projection with BAU scenario reaches 0.88 GWh, while with a climate change scenario of 0.63 GWh. The electricity demand fulfilled by MHP is predicted to be 0.39% in the BAU scenario, 0.28% in climate change scenarios, and 0.55% in the electricity savings scenario. Of the three MHP, the MHP Pancuang Taba is the most vulnerable to climate change, while MHP Koto Ranah shows relatively lower fluctuation. The highest staple water requirement is for Pancuang Taba which is 3643.4 thousand m3. The growth of staple water needs until 2025 tends to be constant. and most rice irrigation needs are in agriculture 2 of 976 thousand m3. The growth of irrigation needs of Bayang watershed until 2025 tends to be constant. Most irrigation needs for paddy fields are in irrigation area of “Agriculture 2” reaching 976,000 m3. The growth of irrigation needs in Bayang watershed tends to be constant.
Numerical simulation of the multi-pulse phenomena in atmospheric-pressure dielectric barrier glow discharges in He/N2mixture
Authors: Li Mingjuan , Han Chunyan , Liu Weibo
Published: June 2018

To further understand the formation mechanism of multi-pulse phenomena in atmospheric He/N2dielectric barrier glow discharge, the influence of nitrogen content on the multi current pulse phenomena is studied by a one-dimensional plasma fluid model. As nitrogen content increases, the first discharge current in the multi-pulse glow discharge becomes larger, and the gas gap voltage drop and the charges transported during the first discharge pulse are also increased, leading to the decrease of subsequent discharge current. When the increasing applied voltage cannot overcome the gas gap voltage drop in the first discharge pulse, the multi-pulse discharge mode will transit into a single pulse discharge mode. The numerical simulation results also show that the changes of discharge characteristics are mainly attributed to the Penning ionization between molecules of nitrogen and metastable atoms of helium.
Improved information on astrophysical S-factor for the 10B(p,α0)7Be reaction using the Trojan Horse method
Authors: Cvetinović A. , Spitaleri C. , Spartá R. , Rapisarda G.G. , Puglia S.M.R. , La Cognata M. , Cherubini S. , Guardo G.L. , Gulino M. , Lamia L. , Pizzone R.G. , Romano S. , Sergi M.L. , Tumino A.
Published: June 2018

The 10B(p,α0)7Be reaction has been studied by applying the Trojan Horse method to the 2H(10B,α0 7Be)n reaction. The bare-nucleus astrophysical S(E)-factor in absolute units was extracted in a wide energy range, from 2.2 MeV to 3 keV and normalized to the direct experimental data, thus allowing determination of the electron screening potential for which a value of Ue=391±74 eV was obtained.
First Measurement of 72Ge(n, γ) at n_TOF
Authors: Dietz M. , Lederer-Woods C. , Aberle O. , Andrzejewski J. , Audouin L. , Bacak M. , Balibrea J. , Barbagallo M. , Bečvář F. , Berthoumieux E. , Billowes J. , Bosnar D. , Brown A. , Caamaño M. , Calviño F. , Calviani M. , Cano-Ott D. , Cardella R. , Casanovas A. , Cerutti F. , Chen Y. H. , Chiaveri E. , Colonna N. , Cortés G. , Cortés-Giraldo M. A , Cosentino L. , Damone L. A. , Diakaki M. , Domingo-Pardo C. , Dressler R. , Dupont E. , Durán I. , Fernández-Dominguez B. , Ferrari A. , Ferreira P. , Finocchiaro P. , Furman V. , Göbel K. , García A. R. , Garg R. , Gawlik A. , Gilardoni S. , Glodariu T. , Goncalves I. F. , González-Romero E. , Griesmayer E. , Guerrero C. , Gunsing F. , Harada H. , Heinitz S. , Heyse J. , Jenkins D. G. , Jericha E. , Käppeler F. , Kadi Y. , Kahl D. , Kalamara A. , Kavrigin P. , Kimura A. , Kivel N. , Kokkoris M. , Krtička M. , Kurtulgil D. , Leal-Cidoncha E. , Leeb H. , Lerendegui-Marco J. , Lo Meo S. , Lonsdale S. J , Macina D. , Marganiec J. , Martínez T. , Masi A. , Massimi C. , Mastinu P. , Mastromarco M. , Maugeri E. A , Mazzone A. , Mendoza E. , Mengoni A. , Milazzo P. M , Mingrone F. , Musumarra A. , Negret A. , Nolte R. , Oprea A. , Patronis N. , Pavlik A. , Perkowski J. , Porras I. , Praena J. , Quesada J. M , Radeck D. , Rauscher T. , Reifarth R. , Rubbia C. , Ryan J. A , Sabateé-Gilarte M. , Saxena A. , Schillebeeckx P. , Schumann D. , Sedyshev P. , Smith A. G , Sosnin N. V , Stamatopoulos A. , Tagliente G. , Tain J. L , Tarifeño-Saldivia A. , Tassan-Got L. , Valenta S. , Vannini G. , Variale V. , Vaz P. , Ventura A. , Vlachoudis V. , Vlastou R. , Wallner A. , Warren S. , Weiss C. , Woods P. J , Wright T. , Žugec P.
Published: June 2018

The slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics input for s-process studies. The 72Ge(n, γ) cross section has an important influence on production of isotopes between Ge and Zr during s-process in massive stars and therefore experimental data are urgently required. 72Ge(n, γ) was measured at the neutron time-of-flight facility n_TOF (CERN) for the first time at stellar energies. The measurement was performed using an enriched 72GeO2 sample at a flight path of 185m with a set of liquid scintillation detectors (C6D6). The motivation, experiment and current status of the data analysis are reported.
Trojan Horse Method experiments with radioactive ion beams
Authors: Gulino Marisa , Cherubini Silvio , Gabriele Rapisarda Giuseppe , Kubono Shigeru , Lamia Livio , La Cognata Marco , Gianluca Pizzone Rosario , Yamaguchi Hidetoshi , Hayakawa Seya , Wakabayashi Yasuo , Iwasa Naohito , Kato Seigo , Komatsubara Tetsuro , Teranishi Takashi , Coc Alain , de Séréville Nicolas , Hammache Fairouz , Kiss Gabor , Bishop Shawn , Nguyen Binh Dam , Roeder Brian , Trache Livius , Tribble Robert , Spartà Roberta , Indelicato Iolanda , Spitaleri Claudio
Published: June 2018

The Trojan Horse Method (THM) is an indirect method that allows to get information about a two body reaction cross-section even at very low energy, avoiding the suppression effects due to the presence of the Coulomb barrier. The method requires a very accurate measurement of a three body reaction in order to reconstruct the whole kinematics and discriminate among different reaction mechanisms that can populate the same final state. These requirements hardly match with the typical low intensity and large divergence of radioactive ion beams (RIBs), and experimental improvements are mandatory for the applicability of the method. The first reaction induced by a radio activeion beam studied by applying the THM was the 18F(p,α)15O. Two experiments were performed in two different laboratories and using different experimental set-ups. The two experiments will be discussed and some results will be presented.
ANC experiments for nuclear astrophysics in NPI CAS
Authors: Mrazek J. , Burjan V. , Kroha V. , Mukhamedzhanov A.M. , Tribble R. , Spitaleri C. , Siváček I. , Glagolev V. , Piskoř Š. , Pizzone G.R. , La Cognata M. , D’Agata G. , Tumino A. , Lamia L. , Sparta R. , Rapisarda G. , Romano S.
Published: June 2018

Asymptotic Normalization Coefficients method is one of the indirect methods used in nuclear astrophysics. The method allows to deduce a direct part of a radiative capture cross section from the measurement of a two body reaction under specific conditions. The experimental works started in collaboration of NPI CAS, TAMU and INFN LNS from 90-ties and continue till the present. The introduction to this method is presented and experimental experiences from NPI CAS and the collaboration are shared.
A Geant4-based Monte Carlo Tool for Nuclear Astrophysics
Authors: Lattuada D. , La Cognata M. , Anzalone A. , Balabanski D.L. , Chesnevskaya S. , Costa M. , Crucillà V. , Guardo G.L. , Gulino M. , Matei C. , Pizzone R.G. , Romano S. , Spitaleri C. , Tumino A. , Xu Y
Published: June 2018

Present and future gamma-beam facilities represent a great opportunity to validate and evaluate the cross-sections of many photonuclear reactions at near-threshold energies, whose data mostly come from theoretical calculations. We developed a Monte Carlo (MC) software that makes use of the validatedtracking Geant4 libraries and the n-body event generator of ROOT libraries in order to provide a fast, realiable and complete MC tool to be used for nuclear physics experiments, with a particular focus on photo-nuclear processes. We discuss the results of the MC simulations performed in order to evaluate the effects of the electromagnetic background, the straggling of the emitted particles due to the target thickness and the resolution of the silicon detectors. Finally we present the preliminary results on some nuclear reactions involved in the p-process, which will be studied with ELISSA and the GBS at ELI-NP.
Proton-Induced Reactions of Astrophysical Interest
Authors: Chillery Thomas
Published: June 2018

A discrepancy exists between the 6Li abundances predicted from big bang nucleosynthesis models and those measured in pre-main sequence stars. To further constrain the predicted abundances of 6Li in these stars, high accuracy measurements are required of reactions destroying 6Li. Namely 6Li(p,γ)7Be and 6Li(p,α) 3He. These have recently been studied at the Laboratory for Underground Nuclear Astrophysics (LUNA) to measure their low energy cross sections. I present both the campaign’s experimental setup and current status of the data analysis.
Big Bang Nucleosynthesis (BBN) and Non-Standard Physics
Authors: Makki Tahani , El Eid Mounib
Published: June 2018

A brief overview on standard big bang nucleosynthesis (shortly, SBBN) is presented. First, we describe the outcome of the SBBN concerning the abundances of the light elements up to 7Li. A comparison with observations reveals a Lithium overproduction, which is not understood yet and is termed as “Cosmological Lithium Problem”. Resolving that problem is not easy, since many aspects are involved whichnuclear, astrophysical and even a non-standard scenario may be invoked. These items are described in some details owing to the limited available space.
Isomeric 26Al beam production with CRIB
Authors: Shimizu H. , Kahl D. , Yamaguchi H. , Abe K. , Beliuskina O. , Cha S. M. , Chae K. Y. , Chen A. A. , Ge Z. , Hayakawa S. , Imai N. , Iwasa N. , Kim A. , Kim D. H. , Kim M. J. , Kubono S. , Kawag M. S. , Liang J. , Moon J. Y. , Nishimura S. , Oka S. , Park S. Y. , Psaltis A. , Teranishi T. , Ueno Y. , Yang L.
Published: June 2018

We performed an experiment to measure proton resonant elastic scattering of a mixed 26m,gAl beam with a thick target in inverse kinematics by using CNS RI beam sep-arator, located at RIKEN Nishina Center. It aimed to search for strong proton resonances and determine level properties of low spin-parity states in 27Si. Diagnosis of the 26mAl purity of the beam by annihilation radiation are discussed.