bluuebunny/crossref_metadata_2025 huggingface dataset:
A salt-based method to adapt stiffness and biodegradability of porous collagen scaffolds
Authors: Versteegden Luuk R. , Sloff Marije , Hoogenkamp Henk R. , Pot Michiel W. , Pang Jeffrey , Hafmans Theo G. , de Jong Thijs , Smit Theo H. , Leeuwenburgh Sander C. , Oosterwijk Egbert , Feitz Wout F. , Daamen Willeke F. , van Kuppevelt Toin H.
Published: November 2019

Treatment of collagen scaffolds with salts taken from the Hofmeister series induce fast shrinkage and increased stiffness. Subcutaneous implantation in rats shows similar biocompatibility as control scaffolds, but reduced cellular influx and increased structural integrity.
Dynamic growth of rhombic dodecahedral Cu2O crystals controlled by reaction temperature and their size-dependent photocatalytic performance
Authors: Yang Xiaodong , Zhang Shupeng , Zhang Lei , Zhang Bo , Ren Tianrui
Published: November 2019

Compared with low-index {100} or {111} planes of Cu2O crystals, rhombic dodecahedra (RD) Cu2O crystals exposing 12 {110} facets exhibit the most superior photodegradation of organic pollutants.
Tailoring intermolecular interactions to develop a low-temperature electrolyte system consisting of 1-butyl-3-methylimidazolium iodide and organic solvents
Authors: Lin Wendy J. , Xu Yifei , MacDonald Shaun , Gunckel Ryan , Zhao Zuofeng , Dai Lenore L.
Published: November 2019

Optimized intermolecular interactions by incorporating the organic solvents GBL and PC with an IL lead to enhancements in thermal and transport properties.
Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells
Authors: Zhang Yuyuan , Deng Lifang , Hu Huawen , Qiao Yu , Yuan Haoran , Chen Dongchu , Chang Menglei , Wei Hongyang
Published: November 2019

Naturally abundant pomelo peels were explored for the preparation of the metal-free carbon-based microspheres with high electrocatalytic activity and long-term durability toward ORR, holding potential for replacing noble metal-based catalysts.
Mixing oil and water with ionic liquids: bicontinuous microemulsions under confinement
Authors: Kim Hojun , Han Mengwei , Bandara Sarith R. , Espinosa-Marzal Rosa M. , Leal Cecilia
Published: November 2019

We report the structural transition of a phosphonium ionic liquid-based microemulsion from the bulk to nanoconfined between atomically flat mica surfaces.
Quantification of spatio-temporal scales of dynamical heterogeneity of water near lipid membranes above supercooling
Authors: Srivastava Abhinav , Karmakar Smarajit , Debnath Ananya
Published: November 2019

Strong evidences of universal features of dynamical heterogeneities are found for chemically confined interface water near a lipid membrane well above supercooling.
Spatially controlled synthesis of superlattice-like SnS/nitrogen-doped graphene hybrid nanobelts as high-rate and durable anode materials for sodium-ion batteries
Authors: Wang Lei , Li Xiaofang , Jin Zhenzhen , Liang Zhun , Peng Xiang , Ren Xiaochuan , Gao Biao , Feng Guang , Chu Paul K. , Huo Kaifu
Published: November 2019

Superlattice-like SnS/NG anode material prepared via spatially confined carbonization and phase-transformation exhibits excellent durability, high rate capability and large capacity.
Single nickel atom supported on hybridized graphene–boron nitride nanosheet as a highly active bi-functional electrocatalyst for hydrogen and oxygen evolution reactions
Authors: Tang Shaobin , Zhou Xunhui , Liu Tianyong , Zhang Shiyong , Yang Tongtong , Luo Yi , Sharman Edward , Jiang Jun
Published: November 2019

Hybridized graphene–boron nitride nanosheet supported single nickel atom was designed as a highly active, stable, and low-cost bi-functional OER/HER electrocatalyst.
Effects of moderate red wine on cardiovascular risk factors in diabetics: a systematic review and meta-analysis of randomized controlled trials
Authors: Naame Saavia Alice , Li Decheng , Huang Ruixue
Published: November 2019

Background: Diabetes mellitus is of major public health concerns; its incidence is continuously increasing. Diabetes mellitus is associated with a high risk of cardiovascular complications such as hypertension. Red wine has been reported to reduce cardiovascular risk factors. We quantified the effects of red wine on cardiovascular factors. Methods: We retrieved English-language articles published from January 1990 to April 2019. Cardiovascular risk factors were compared using means with 95% confidence intervals (95% CIs). Results: We identified five eligible randomized controlled trials. Diabetic patients who drank red wine exhibited significantly reduced systolic blood pressure (BP) (mean difference [MD] −1.33, 95% CI −1.81, −0.85) and diastolic BP (MD −1.31, 95% CI −1.80, −0.83) than those who did not. Compared to the observations for diabetics who did not drink red wine, the high-density lipoprotein (HDL) level was significantly higher in red wine drinkers (MD −0.24, 95% CI −0.39, −0.09). However, red wine had no effect on the body mass index (BMI) (MD −0.27, 95% CI −1.80, 1.25), the total cholesterol level (MD 0.13, 95% CI −0.17, 0.44), or the low-density lipoprotein (LDL) level (MD 0.08, 95% CI −0.21, 0.37). Conclusions: Red wine consumption significantly lowered BP and increased the HDL level in diabetics. Red wine had no significant effect on BMI or cholesterol and LDL levels. Given the heterogeneity of the studied populations and the lack of standardization and completeness across the published studies, caution is required while interpreting these findings.
Analysis of energy harvesting cognitive relay network with cooperative spectrum sensing
Authors: Huang Haiyan , Zhang Xuejun , Huang Yangchao , Li Xinying , Wang Chunli
Published: November 2019

In this study, the authors investigate the performance of an energy harvesting cognitive cooperative multiple relays network with spectrum sensing, where secondary user accesses the licensed spectrum according to the spectrum sensing results. Particularly, if the spectrum hole is detected, the secondary nodes harvest energy from the ambient environment, otherwise, the secondary source and relays transmit with the energy collected from the primary signals. Taking the imperfect spectrum sensing results into account, exact closed‐form expressions for the total outage probability and capacity of the secondary network are derived under the context of Rayleigh fading channels, where the proposed modified selective cooperative decode‐and‐forward relaying transmission schemes are adopted. Compared with the conventional cognitive relay network, the authors must undertake the correlations among the received signal‐to‐noise ratios or signal‐to‐interference‐plus‐noise ratios caused by both the presence of primary user's interference and energy harvesting for the system understudy. It is shown that spectrum sensing phase and data transmission phase are mutual influence and mutual restraint.
Positive sequence voltage source converter mathematical model for use in low short circuit systems
Authors: Ramasubramanian Deepak , Wang Wenzong , Pourbeik Pouyan , Farantatos Evangelos , Gaikwad Anish , Soni Sachin , Chadliev Vladimir
Published: November 2019

In this study, modifications are proposed to the state‐of‐the‐art positive sequence generic converter model in order to capture the small‐signal and large‐signal oscillatory instabilities associated with converters interfaced at low short circuit locations. The performance of the positive sequence model is validated against detailed electromagnetic simulations to lend confidence in this proposed model. Additionally, validation of performance of the model against observed field measurements is also carried out.
Multi‐scale transient modelling and simulation for distribution network‐interactive CHB multilevel converters
Authors: Ye Hua , Kong Li , Tang Yanan , Pei Wei , Deng Wei
Published: November 2019

This study presents a multi‐scale transient model of cascaded H‐bridge (CHB) converter for distribution network‐interactive studies, which is capable of simulating slow‐changing dynamics up to high‐frequency switching transients. The switching pulse behaviours of H‐bridges are described using the waveform propagation theory. By taking individual H‐bridge sub‐modules into account, a semi‐analytic function (SAF) model of the CHB multilevel converter is developed. It allows for accelerated simulation of switch‐type electromagnetic transients (EMTs). During slow‐changing dynamics, the developed SAF is converted to a shifted‐frequency phasor (SFP) model using the Fourier series expansion. Due to the consistent modulation and complex analytical signal processes, smooth transitions between the SAF and SFP are achieved for different running stages. Moreover, the proposed model is readily integrated with external multi‐scale models of the distribution network. The validity of the proposed multi‐scale model is performed through case studies that include the CHB internal fault, distribution network faults, and also interactive dynamics between them. The accuracy and efficiency of the multi‐scale model is verified through comparisons of the results with those obtained from the full EMT‐type programmes.
Maximal overlap discrete wavelet transform and deep learning for robust denoising and detection of power quality disturbance
Authors: Xiao Fei , Lu Tianguang , Wu Mingli , Ai Qian
Published: November 2019

This study presents a new technique for power quality (PQ) disturbance detection. The technique focuses on voltage sags and interruptions that are related to various faults, i.e. transmission line, feeder, and transformer faults. A maximal overlap discrete wavelet transform‐based PQ detection algorithm is proposed to provide accurate points of disturbance initiation and recovery. The proposed PQ detection algorithm is robust even without a detection threshold and independent of the sampling frequency of PQ recording. In consideration of the presence of noise conditions, the preprocessed PQ waveforms are converted into 2D binary vectors using space vector transformation. Then, an improved stacked sparse denoising autoencoder combined with supervised backpropagation training is proposed as a robust classifier. Results show that the proposed method is suitable for detecting various types of PQ disturbances and possesses high recognition accuracy despite insufficient training samples.
Green content communications in 6LoWPAN
Authors: Li Yanli , Wang Xiaonan
Published: November 2019

As a low‐rate and low‐power network, IPv6 over low‐power wireless personal area network (6LoWPAN) wireless sensor network (WSN) suffers from considerable data communication latency and rapid energy depletion which data transmission mainly accounts for. Therefore, it is significant to reduce data communication latency and balance the energy consumption among sensor nodes to avoid the situation that a sensor node transmits a large content. To achieve these two objectives, the authors are motivated to extend the k ‐anycast communication model to 6LoWPAN WSN so that the different parts of a large content can be provided by multiple optimal k ‐anycast members in parallel. In this way, content communication latency can be reduced and energy consumption caused by content transmission can be shared by these members. This proposal is evaluated and the data results show that this proposal effectively reduces the content communication latency and achieves the energy consumption balance.
UV irradiation‐promoted wet etching of ZnO nanorods to nanotubes
Authors: Zhou Fan , Jing Weixuan , Mao Qi , Liu Shu , Xu Yaxing , Han Feng , Wei Zhengying , Jiang Zhuangde
Published: November 2019

In this work, UV irradiation was introduced to promote the etching process of ZnO nanorods towards nanotubes. The ZnO nanorods with different diameters were grown on Au cylindrical spirals via hydrothermal decomposition, and then in the presence of UV irradiation, they were chemically etched to nanotubes. The results indicate that the ZnO nanorods with the larger diameter are easily etched to nanotubes due to enough oxygen vacancies (a kind of defect) within the centre parts, but the ZnO nanorods with the smaller diameter are difficult to form tubular structures because of the insufficient oxygen vacancies. With the introduction of UV irradiation, more oxygen vacancies are produced in the ZnO nanorods and hence, the nanorods with the larger diameter are etched more quickly, and the nanorods with the smaller diameter are etched more easily. Additionally, the UV light with the shorter wavelength is more beneficial for the formation of the ZnO nanotubes than the one with the longer wavelength. The results benefit the wet etching of ZnO nanorods towards nanotubes, especially those with smaller diameters.
Erkannt und konsequent erfolgreich behandelt: Reanimation bei Lungenarterienembolie
Authors: Grohé Maximilian , Asmus Jens , Bohn Andreas , Sackarnd Jan
Published: November 2019

Es wird von einem 63-jährigen Patienten mit Luftnot berichtet. Während der Versorgung durch den Notarzt wurde der Patient reanimationspflichtig. Die Diagnose einer fulminanten Lungenembolie wurde auf klinischer Basis gestellt. Aufgrund der sofort eingeleiteten Reanimation, der potenziell reversiblen Ursache und dem Potenzial des Patienten wurde der Patient unter mechanischer Reanimation in ein Cardiac-Arrest-Center transportiert, da vor Ort kein Spontankreislauf etabliert werden konnte. Dort erfolgte die weitere Versorgung unter extrakorporaler Reanimation (eCPR). Zur Versorgung hat der Rettungsdienst mit dem Cardiac-Arrest-Center des Universitätsklinikums ein Konzept etabliert. Dieses wird im Rahmen der Fallvorstellung dargestellt. Es wird auf Chancen und Grenzen eines Konzeptes zur eCPR eingegangen.
É importante saber onde posicionar o marcador esférico para o planejamento digital de artroplastia de quadril?
Authors: Polesello Giancarlo Cavalli , Salerno Thiago Tronco , Rezende João Hélio Zucarelli , Ricioli Junior Walter , Rabelo Nayra Deise , de Queiroz Marcelo Cavalheiro
Published: November 2019

Objetivo Os objetivos desse artigo são avaliar as influências das características pessoais na magnificação radiográfica e identificar o método de maior acurácia e o mais adequado.

Métodos Durante o exame radiográfico em 50 pacientes com prótese de quadril, foram coletados dados antropométricos e posicionados quatro marcadores metálicos esféricos: ao nível e lateral ao trocânter maior, na sínfise púbica, ao nível do trocânter maior entre as coxas, sobre a mesa do exame. A cabeça da prótese é o melhor marcador radiográfico interno e foi o nosso parâmetro de calibragem. Dois avaliadores mediram as imagens desses marcadores para análise de resultados.

Resultados Foram selecionados 50 participantes, sendo 19 do sexo masculino. Houve diferença de magnificação entre os sexos na posição sínfise púbica. As outras características pessoais avaliadas (peso, altura e índice de massa corpórea) tiveram correlação fraca. A maior acurácia do marcador foi no trocânter maior, entre 68,4 e 78,9%, visualizado em apenas 19 radiografias. O marcador entre as coxas obteve acurácia entre 30 e 46% e foi visualizado em todas as radiografias.

Conclusão Das características pessoais, apenas o sexo influencia a magnificação e somente na posição da sínfise púbica. Sugerimos padronizar o uso de duas esferas: no trocanter maior, pela maior acurácia, e entre as coxas, por ser o mais adequado e com melhor visibilidade em todas radiografias.
Differences in color categorization manifested by males and females: a quantitative World Color Survey study
Authors: Fider Nicole A. , Komarova Natalia L.
Published: November 2019

Gender-related differences in human color preferences, color perception, and color lexicon have been reported in the literature over several decades. This work focuses on the way the two genders categorize color stimuli. Using the cross-cultural data from the World Color Survey (WCS) and rigorous mathematical methodology, a function is constructed, which measures the differences in color categorization systems manifested by men and women. A significant number of cases are identified, where men and women exhibit markedly disparate behavior. Interestingly, of the regions in the Munsell color array, the green-blue (“grue”) region appears to be associated with the largest group of categorization differences, with females revealing a more differentiated color categorization pattern compared to males. More precisely, in those cases, females tend to use separate green and/or blue categories, while males predominantly use the grue category. In general, the cases singled out by our method warrant a closer study, as they may indicate a transitional categorization scheme.
Structure of life satisfaction from the perspective of arts experiences in Japan
Authors: Iida Seira
Published: November 2019

Approximately 40% of elementary school girls have some type of arts experience, such as dancing and playing instruments, as out-of-school activities. However, its effect has not been clearly revealed. This is mainly because the effects of the arts were not a major topic of discussion in Japan so there has been little data about the arts. With the precise knowledge, we could start considering how to take the benefits of the arts. Thus, this paper empirically analyzed the effects of the arts on quality of life in the case of Japan. The aim was to reveal the impacts of arts experiences in order to consider how to support or make use of the arts. It utilized structural equation modeling to reveal the relationships between the number of the arts experience types in elementary school and life satisfaction. The nationwide data from the Preference Parameters Study in 2013 was primarily utilized. The sample size was 1532, including 823 females and 709 males. The results showed significant positive relationships between the number of the arts experience types and life satisfaction through attitudes, present behaviors related to the arts, and leisure satisfaction. The results suggested two issues; arts experience in elementary school years helped to cultivate the mind to enjoy the arts and also the arts played the role to increase one’s quality of life.
Modulated photonic-crystal surface-emitting laser with elliptical lattice points for two-dimensional coupling enhancement
Authors: Tanaka Yoshinori , Nishigo Atsuki , Kitamura Kyoko , Gelleta John , Noda Susumu
Published: November 2019

Modulated photonic-crystal surface-emitting lasers (M-PCSELs) are new semiconductor lasers that can emit a laser beam in arbitrary directions. Therefore, they can be regarded as a next-generation light source for light detection and ranging. In this manuscript, we numerically investigate the characteristics of M-PCSELs, including one- and two-dimensional optical coupling constants and radiation constants, by using three-dimensional coupled wave theory. We also carry out lattice point designs and show that the two-dimensional optical coupling can be enhanced by more than four times over our previous M-PCSEL devices by employing elliptical lattice points. Moreover, we find that two-dimensional optical coupling can be maintained even when large lattice point position modulations are introduced for large radiation constants. These results indicate that more stable two-dimensional oscillation and a higher slope efficiency are expected in M-PCSELs with elliptical lattice points.
Structural, electronic, and electromechanical properties of MoSSe/blue phosphorene heterobilayer
Authors: Li Xiaobao , Wang Xiaotian , Hao Weijie , Mi Changwen , Zhou Huanlin
Published: November 2019

Two-dimensional (2D) materials attract considerable interest due to their outstanding electronic and mechanical properties. Although extensive efforts have been made on seeking of new kinds of 2D materials, individual ones can hardly offer all required properties for practical applications in nanoelectronics and optoelectronics. To integrate the advantages of each individual component, in this work, we predict the structural and electromechanical properties of 2D van der Waals (vdW) heterobilayers constructed with single-layer Janus transition metal dichalcogenides and blue phosphorus (e.g., SMoSe/BlueP and SeMoS/BlueP) by means of density-functional theory (DFT) based calculations. The vdW interactions were carefully taken into account by employing the DFT-DF correction functional. It is found that the proposed vdW heterobilayers are dynamically stable with enhanced elastic moduli. The SeMoS/BlueP heterobilayer is shown as a type-I semiconductor with an indirect bandgap of 1.55 eV, and SMoSe/BlueP is also a type-I semiconductor with a slightly larger indirect bandgap of 1.76 eV. In addition, the piezoelectronic response of the heterobilayers was also carefully explored. In particular, the out-of-plane piezoelectric response of SeMoS/BlueP that is characterized by the piezoelectric coefficient e311(d311) gets enhanced compared to the Janus MoSSe monolayer. Our findings demonstrate a great potential for their applications in energy harvesting and sensors at the nanoscale.
Simple microfluidic device for detecting the negative dielectrophoresis of DNA labeled microbeads
Authors: Nakano Michihiko , Ding Zhenhao , Matsuda Kenya , Xu Jingwen , Inaba Masafumi , Suehiro Junya
Published: November 2019

We propose a new microfluidic device that can be used to determine the change in the negative dielectrophoresis (n-DEP) of dielectric microbeads when a small amount of DNA is attached to them. We previously proposed a DNA detection method based on changes in the DEP of microbeads induced by the attachment of DNA. When target DNA is attached to the microbeads having n-DEP property, the DEP changes from negative to positive. This occurs because electric charges of the DNA increase the surface conductance of the microbeads. Thus, only the DNA-labeled microbeads are attracted to a microelectrode by positive DEP. The trapped DNA-labeled microbeads can be counted by dielectrophoretic impedance measurements. A large amount of DNA (approximately 105 DNA molecules) is required to change the DEP from negative to positive. Even though this method can be combined with DNA amplification, reducing the amount of DNA required can help us to shorten the reaction time. In this study, we aimed to detect DNA less than 105 DNA molecules by determining the change in the n-DEP change. To achieve this, we proposed a simple microfluidic device consisting of a single microchannel and a single pair of microelectrodes. Numerical simulations revealed that the device can identify the slight change in the n-DEP of the microbeads corresponding to the attachment of a small amount of DNA. In practical experiments, the fabricated device distinguished 10–1000 DNA molecules per microbead. This method represents a fast and easy method of DNA detection when combined with DNA amplification techniques.
Shaping and transporting diamagnetic sessile drops
Authors: Dodoo Jennifer , Stokes Adam A.
Published: November 2019

Electromagnetic fields are commonly used to control small quantities of fluids in microfluidics and digital microfluidics. Magnetic control techniques are less well studied than their electric counterparts, with only a few investigations into liquid diamagnetism. The ratio of magnetic to surface energy (magnetic Bond number Bm) is an order of magnitude smaller for diamagnetic drops (Bm≈−0.3 at 1.2 T applied field) than for paramagnetic drops (Bm≈9.0 at 1.2 T applied field). This weaker interaction between the magnetic field and the diamagnetic drop has led to the phenomenon being overlooked in digital microfluidics. Here, we investigate shaping and transport of diamagnetic drops using magnetostatic fields. Our findings highlight how diamagnetic fluids can be used as a novel tool in the toolbox of microfluidics and digital microfluidics.
Magnetotransport properties of magnetite-hematite composite oxides
Authors: Nakagawa K. , Asano H. , Miyazaki Y. , Shiomi Y.
Published: November 2019

We have studied transport properties of composite oxides composed of ferrimagnetic conductor Fe3O4 (magnetite) and insulating α-Fe2O3 (hematite) at room temperature. High-density composite oxides with different Fe3O4/Fe2O3 ratios were successfully synthesized by melting Fe2O3 rods at high temperatures in ambient atmosphere. Transport properties of Fe3O4-Fe2O3 composites were measured and compared with that of Fe3O4 single crystals. As the ratio of the insulating Fe2O3 concentration to the conductive Fe3O4 one increases, the longitudinal resistivity increases exponentially, while the Seebeck coefficient decreases linearly. The contrasting dependences of electric and thermoelectric transports on the insulating Fe2O3 concentration indicate that the thermoelectric transport is less susceptible to disorder effects than electric ones. The measurement of the Hall effect shows that the anomalous Hall effect due to the ferrimagnetic Fe3O4 phase is clearly observed in the composite oxides. In line with the resistivity increase with the Fe2O3 concentration, the anomalous Hall resistivity increases, following the universal scaling relation established in the dirty limit. The anomalous Nernst effect due to the Fe3O4 phase is also observed in the composite oxides. The anomalous Nernst coefficient decreases with increasing Fe2O3 concentration, and the decrease is found to be related to the anomalous Hall effect through the Mott relation.
The search for optimal short-term solar photovoltaic forecasting using neural networks
Authors: Frank Jodi Ackerman
Published: November 2019

Researchers use a convolutional neural network system to explore fusing image data with photovoltaic-generation history in the search for an optimal forecasting model.
“Put a little bit of humor into it”
Authors: Shively Rachel L. , Mir Montserrat
Published: November 2019

This study examines the use of teacher humor in whole-group interactions in beginning-level Spanish foreign
language (FL) classes. Previous research has focused primarily on student humor and on humor in intermediate- and advanced-level
FL courses. Hence, the goals of the research were, first, to determine whether teachers use spontaneous verbal humor in
beginning-level courses and, if so, in what ways. Second, we considered whether the amount of teacher humor was related to the
amount of student humor. The findings indicate that many of the instructors in the study did, indeed, joke around with their
students. Most teacher humor was affiliative or rapport-enhancing, delivered in the target language, and designed with students’
L2 abilities in mind. Finally, in classes in which teachers joked more often, there was a tendency for students to joke more often
as well, suggesting that teacher humor may encourage student humor.
Vilnius memoryscape
Authors: Moore Irina
Published: November 2019

Through the lens of semiotic landscapes, I analyse here collective memory formation in the Baltic republic of Lithuania. A theoretical focus on power relation in “monumental politics”, the concept of memoryscape (Clack, 2011),Van Gennep’s 2004sociological application of liminality, and a methodological approach that “treats space as a discursive as well as physical formation” (Jaworski & Thurlow, 2010) are combined to examine the process of monument destruction, creation, and alteration in post-Soviet Vilnius. I argue that cultural landscapes represent not only relationships of power within societies but are also used as a tool of nation-building and power legitimation. I highlight a fourfold process: (1) razing – monumental landscape cleansing; (2) raising – the return of memory via the creation of national historical continuity symbols and of newlieux de mémoire(Nora, 1996) and the memorization complex (Train, 2016); (3) polyphonic memorial narratives of empty spaces; and (4) the memory limbo helix or recursive memories.
The landscape returns the gaze
Authors: Pennycook Alastair
Published: November 2019

This paper looks at bikescapes – and particularly dockless share bikes – with a focus on their rapid proliferation and subsequent partial demise in Sydney. Four principal themes emerged from this study: first, bikes are an important part of the cityscape, and studies of urban semiotics need to take greater account of modes of transport. Second, the rise of docked and dockless share bikes has changed the ways the city is felt and perceived: as bikes circulate within the city, these shifting bikescapes make visible changes to the physical city environment. The ebb and flow of dockless bikes – from neat alignments to dispersed arrangements – provide an insight into changing patterns of work, leisure, and mobility, and present entropic rather than ordered city processes. Third, these bikes became significant discourse markers, material artefacts where discourses of consumption, convenience, contamination, and co-operation intersect. Dockless share bikes sit at the hub of a tussle over public and private ownership of space and information, in terms both of their physical incursion into public space and as syphons of personal information. Finally, they suggest not only that aspects of the cityscape may play an active role in semiotic networks, but that the semiotic landscape may be returning our gaze.
Coupling APEX labeling to imaging mass spectrometry of single organelles reveals heterogeneity in lysosomal protein turnover
Authors: Narendra Derek P. , Guillermier Christelle , Gyngard Frank , Huang Xiaoping , Ward Michael E. , Steinhauser Matthew L.
Published: November 2019

Quantification of stable isotope tracers after metabolic labeling provides a snapshot of the dynamic state of living cells and tissue. A form of imaging mass spectrometry quantifies isotope ratios with a lateral resolution <50 nm, using a methodology that we refer to as multi-isotope imaging mass spectrometry (MIMS). Despite lateral resolution exceeding diffraction-limited light microscopy, lack of contrast has largely limited use of MIMS to large or specialized subcellular structures, such as the nucleus and stereocilia. In this study, we repurpose the engineered peroxidase APEX2 as the first genetically encoded marker for MIMS. Coupling APEX2 labeling of lysosomes and metabolic labeling of protein, we identify that individual lysosomes exhibit substantial heterogeneity in protein age, which is lost in iPSC-derived neurons lacking the lysosomal protein progranulin. This study expands the practical use of MIMS for cell biology by enabling measurements of metabolic function from stable isotope labeling within individual organelles in situ.
The Influence of Palm Shell as Aggregate Substitution to The Compressive Normal Concrete Strength
Authors: Yusra A , Opirina L
Published: November 2019

The main objective of this paper was to study the influence of palm shell used as aggregate substitution to achieve structural concrete with lighter weight than normal concrete. Instead of normal aggregate, the alternative aggregate palm shell was used with variation of substitution consisting of 0%, 15%, 30%, 35% and 65% of palm shell by weight of aggregates. Water-cement ratio was 0.40 of and f’c 30 MPa. The test result conducted on the 28th day showed that the strength was increased. However, as the Palm Shell percentages increased, the compressive strength decreased. The normal concrete (0%) of palm shell was resulted 46.188 MPa of strength and the substitution of 15%, 30%, 45% and 60% was 42.917 MPa, 23.287 MPa, 18.860 MPa and 8.468 MPa. There was a reduction in the strength at 0% substitution compared to 60% substitution, and it occurred reduction weight of concrete with 0%, 15%, 30%, 45% and 60% substitution of palm shell that gave result 2528 kg/m3, 2359 kg/m3, 2053 kg/m3, 1990 kg/m3 and 1809 kg/m3 concrete weight. As a result, it shows that the concrete using 0% of palm shell substitution can be categorized as a high strength concrete for 60% substitution palm gave non-structural concrete with lightweight concrete.
Mobile Traffic Warning Signs, Can It Be Applied?
Authors: Sodikin
Published: November 2019

The mobile warning signs is the concept of placement of traffic signs board. The application of mobile warning signs is tested using two standards that consist of legibility distance and glance legibility. The procedure is begun by attaching a camera at the car observer to record the tested car installed with the mobile traffic warning sign. The result of observation will produce a documentation in a video file format. The video then comes into an editing process to trim the parts that point to the legibility distance and glance legibility. The trims of video are given to the respondents. This research uses a mobile phone equipped with Google Maps, iOnRoad Professional, Lollipop Screen Recording and VSDC Video Editor. The result confirms that the respondents’ standard of legibility is fulfilled by the requirement of mobile traffic warning signs which is designed (46x69) cm in board size, 5 cm in letter size and clearview font. This distance affirms the maximum legibility distance of 50 meters within 7 second and minimum legibility distance of 20 meters within any range of time interval. The glance legibility eventually will not affect significantly when the following car moves as the warning sign attached-car does.
Analysis of One-Way System Implementation with Contra-Flow Bus Lane in Supporting Sustainable Transportation Program
Authors: Yulianto B , Setiono
Published: November 2019

Traffic development in the central business district area along the Brigjend Slamet Riyadi road, Surakarta City, Indonesia, is relatively dense and not in accordance with the development and changes in the environmental situation. This phenomenon creates congestion on several roads and intersections. Transport planning related to traffic management and engineering, and infrastructure needs to be carried out to solve urban transportation problems. Based on the Surakarta City Government’s vision related to sustainable transportation, the one-way system with contra-flow bus lane will be implemented along the Brigjend Slamet Riyadi road. With the existence of this system, it is hoped that public transport Batik Solo Trans as one solution of urban transportation problem can be more integrated, fast, safe, comfortable, reliable and efficient. The purpose of this research is to determine the impact of the implementation of one-way system with contra-flow bus lane to the traffic performance in the study area. The research methodology involves modelling and analysing the traffic performance, parking and potential public transport demand in the study area. The existence of one-way system with contra-flow bus lane has the potential to increase the use of public transportation and improve the performance of public transportation. In general, traffic performance decreases, therefore it is necessary to perform transportation demand management such as management parking.
The effects of fineness level of fly ash and accelerator on the setting time and the compressive strength of geopolymer mortar
Authors: Firdaus  , Rosidawani  , Yunus I
Published: November 2019

This experimental study is part of fly ash based geopolymer research development. The type F fly ash which is the quite abundant by-product materials from power plant burning coal in Tanjung Enim, South Sumatera was the background of this research. However, this kind of fly ash was being treated before it would be used. As known that the mechanical properties of the harden of cementitious material is affected by its fineness of the binder material. The beginning researches about this fly ash based geopolymer concluded that early harden process was being difficult. By this problem, in this research some of accelerator/fly ash ratios are used as the one of the variables. This study aimed to determine the contribution of the fineness level of the fly ash as well as the accelerator/flyash ratio to the setting time and its compressive strength of the geopolymer mortar. The sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as the activator and the accelerator with the 0%, 0.5%, 1%, 1.5% and 2% as the accelerator/fly ash ratios are used in this study. The 3 zones of the fineness level of flyash are being the other variable of the research. The results showed that the fineness level based on fall zone and the accelerator/flyash ratio affect the setting time and compressive strength significantly. The fineness level based on the fall zone increased the compressive strength and tended to produce the shorter setting time. While the higher accelerator/flyash ratio gives the higher compressive strength of geopolymer mortar. The initial setting time and final setting time ranged from 90 minutes to 225 minutes.
Study of determining the toll fare for the Yogyakarta-Solo corridor
Authors: Anas R , Sembiring I S
Published: November 2019

As part of the government policy related with the development of road infrastructure, the acceleration of the toll road investment is expected to be able to push the road network performance and the regional economy. One of the plans is the development of Yogyakarta-Solo toll road with the length of segment is ± 40,5 Km. The basic toll rate is set in the beginning during the concession time as one of the parameters of a toll road investment. Based on the design of particular toll road, this research is then done to determine the particular basic toll rate. The methods that may be used as approaching the determination of the particular rate, such as: Saving of Vehicle Operating Cost Method (saving of VOC), Willingness to Pay (WTP), and Ability to Pay (ATP). From the toll rate calculation results based on the saving VOC and ATP/WTP analysis result, with the assumptions for the toll road to begin operating in the year 2018, hence the proposed value of the Yogyakarta-Solo toll rate is Rp. 26.000 (+ Rp. 675/km).
Skid resistance of gap graded hot-mix asphalt with added crumb rubber
Authors: Ariyapijati R H , Hadiwardoyo S P , Sumabrata R J
Published: November 2019

Road surface condition is a critical factor that determines road safety. The paved surface of the road should have sufficient skid resistance to enable a vehicle passing over it to accelerate and stop/brake safely and comfortably. Gap graded hot-mix asphalt is generally used as a non-structural and an impermeable layer to protect the structural layers. The hot rolled sheet (HRS) asphalt mixture has larger cavities that require more asphalt compared to other asphalt pavement types. The addition of crumb rubber (CR) to the asphalt mixture was carried out using the dry mixture method, and the resulting mixture was added to the aggregate. This study utilizes gap graded asphalt pavements containing natural asphalt from a processed product called Asbuton Retona blend 55. CR was added to the asphalt mixture in proportions of 0.5%, 1%, 1.5%, and 2%. This added material improves the performance of the asphalt mixture. The skid resistance of the paved surface layer studied herein used the British pendulum tester for pavement surface temperature variations of 25 °C, 30 °C, 35 °C, 40 °C, 45 °C, and 50 °C. Utilization of CR derived from used tire rubber powder provides the benefit of reusing waste materials that can help preserve the environment. The gap graded hot-mix asphalt with added CR and asphalt modified Asbuton Retona blend 55 has shown an improvement in the skid number. These results show that the hot-mix asphalt pavement with modified asphalt is more impermeable and provides better slip resistance.
Testing of Early Stage of BPPT-3MW Condensing Type Small Scale Geothermal Power Plant – Kamojang - Indonesia
Authors: Prasetyo Bambang Teguh , Suyanto  , Oktaufik MAM , Sutriyanto Himawan
Published: November 2019

Geothermal power plant (GPP) technology is one of the prospective renewable energy technologies and a priority in the development of national electricity today. The Electricity Supply Business Plan (RUPTL) 2018-2027 shows the plan to increase GPP capacity in the period of 4.583 GW, or 8% of all national power plants development, and 30% of all new & renewable energy-based power generation. Until 1st quarter 2018, the installed GPP capacity of 1.924 GW and all of them are imported technology. So efforts to develop national GPP technology are very strategic to support national energy independence in the future. AgencyfortheAssessmentandApplicationof Technology(BPPT) has developed and operated a 3 MW GPP of condensing type technology in Kamojang - Indonesia, which is the first prototype GPP manufactured by national company. The GPP design is based on KMJ-68 well data characteristics, owned by Pertamina Geothermal Energy, and steam turbine specifications designed in reverse engineering. The manufacturing process of the main components of the plant such as turbines, generators, condensers, etc. carried out by the national industry. In this paper it is discussed about the process of test operation in the early stage, starting from the preparation of SOP, conducting free load generator test, dummy load testing, and load testing. Until early 2018, the BPPT’s GPP has generated 15,572 kWh of electricity, with the highest load of 1.3 MW. During testing all process parameters, particularly vibrations, bearing temperatures and lubricants, all within safe limit. The thermal efficiency of the turbine-generator system reaches 13% for loads of about 1 MW.
An Application of Microcontroller for Flood Hazard Early Warning System to Create Friendly City
Authors: Bahri S , W Purwantiasning A
Published: November 2019

This paper is aimed to discuss the microcontroller that applied for flood hazard early warning system to create friendly city, particularly in Jakarta city, Indonesia. By using this system, the danger of flood hazard could be anticipated early. The tools and material of prototype system that have been used in this research are microcontroller Arduino-Uno, Probe Sensor, Atwin Quad-Band GSM/GPRS and mobile phone. The method of this research is design, installment and testing the tools. The probe sensor read the level of water at the surface of water tank and sent it to microcontroller. This information processed by microcontroller and divided it into three categories: Level-3 (the lower sensor refered to the normal condition we called as SIAGA 3), Level-2 (the middle sensor refered to the warning condition we called as SIAGA 2) and Level-1 (the upper sensor refered to danger/critical condition we called as SIAGA 1. This condition will be sent to mobile phone receiver via Atwin quad Band GSM/GPRS module. Based on the test, information of these three conditions received by the receiver with time delay 4-6 second. This time delay varying depended on the strange of GSM provider signal to send the information to a receiver.
Uplink Power Control Based on SINR for D2D Enabled in Cellular Communication Network
Authors: Susanto M , Abadi A , Herlinawati  , Trisanto A
Published: November 2019

Device-to-device (D2D) communication is a promising technology for achieving the vision of next generation of cellular communication network in which D2D communication is known as one of candidates for fifth generation (5G) cellular network technology. By enabling D2D communication, it allows any two user equipment (UE) to communicate directly without going through enhance Node B (eNB) in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular communication networks. However, with the presence of D2D-enabled UE (DUE) in the macrocell area of OFDMA based cellular network, the fundamental problem of interference arises due to radio resources sharing between conventional UE and DUE. This paper evaluates our two previous proposed power controls (namely, Power Control 1 (PC 1) and Power Control 2 (PC 2)) to reduce that interference effect in the uplink transmission of OFDMA based cellular network. The PC 1 and PC 2 methods were based on the estimated current Signal to Interference plus Noise Ratio (SINR) at the point of interest. Extensive simulation has been carried out to observe the effectiveness of the two power control methods compared to the system without power control. The collected performance parameters in the simulation is SINR and analyses its distribution. The simulation results show that both power control methods on the uplink transmissions outperform the system without power control.
The Use of Background Subtraction Method in Model Design of Traffic Light Timer Control System
Authors: Purwiyanti S , Farisi RP , Setyawan F A , Sulistyanti S R , Yuniati Y , Murdika U
Published: November 2019

Traffic jam caused many problems, one of which, causing time wasting and increasing fuel consumption of user’s vehicle. One of the solutions offered to solve traffic jam is a control system named traffic light timer. It is a traffic management system in each spot of the road done by minimizing the waiting time of the rider during the jam. This research built traffic light timer controller model based on image processing by using Background Subtraction method. The object captured on the road will be processed using Background Subtraction method, the results then show the situation of the road as the parameters of quiet, medium, and heavy roads. The images are then forwarded to the traffic light timer control system to be processed using the hardware and software used in the research. The results show that the Traffic light timer control system is able to classify the heaviness of vehicles queue, to control the timer, and the lights of the traffic light automatically based on the queue of the vehicles with time processing around 2 seconds.
Dynamic Voltage Restorer for the Voltage Drop Compensation in Long Rural Distribution Feeder Application
Authors: Khairudin  , Hakim L , Saputra A A S , Alhasewi A
Published: November 2019

Ideally, a distribution feeder should be able to assure the voltage level at the end of feeder not more or less than five percent of its nominal value as regulated in the Grid Code. However, in such circumstance where the feeder has to serve the load through a very long line with randomly load scattering characteristic, the level of voltage could be far below its allowable lower level. In some cases, the use of capacitor bank fails to solve this problem. In this paper a new breakthrough by utilizing an Intelligent Power Electronic Device to overcome voltage drop is proposed. A Voltage Restorer is introduced to install in a 20 kV distribution line of PLN Lampung to enhance its voltage profile. The simulations showed the range of voltage level is within the range of 95% – 105% of the nominal value.
Study of Battery Performance Analysis with Regenerative Braking Methods using SIMULINK
Authors: Garniwa I , Orlando G , Noorfatima N , Sudiarto B , Dipantara B
Published: November 2019

The purpose of this study is to find the most eligible battery capacity for ultra-compact electric vehicle. Lithium-Ion batteries configuration is designed and examined for the research. Physical characteristics of the vehicle and motor assign battery capacity. The battery must be able to attain certain length of track and to utilize regenerative braking method. Designed battery will be examined by adjusting loading variations and regenerative braking method with specified track length. The performance of the battery is analyzed with and without controller used during certain experiments. The obtained results emphasize the designed battery performances throughout variations of loading and regenerative braking method applied. During performance test in the field, the battery shows that the average discharge current is inversed to the average voltage during constant and varied velocity tests. Moreover, the battery velocity rises when the regenerative braking method is applied. The throughout experiment will be compared and analyzed using SIMULINK.