bluuebunny/crossref_metadata_2025_split huggingface dataset:
Role of temperature on bio-printability of gelatin methacryloyl bioink in two-step cross-linking strategy for tissue engineering applications
Authors: Janmaleki Mohsen , Liu Jun , Kamkar Milad , Azarmanesh Milad , Sundararaj Uttandaraman , Nezhad Amir Sanati 
Published: September 2020

Abstract
Additive manufacturing has shown promising results in reconstructing three-dimensional (3D) living tissues for various applications, including tissue engineering, regenerative medicine, drug discovery, and high-throughput drug screening. In extrusion-based bioprinters, stable formation of filaments and high-fidelity deposition of bioinks are the primary challenges in fabrication of physiologically relevant tissue constructs. Among various bioinks, gelatin methacryloyl (GelMA) is known as a photocurable and physicochemically tunable hydrogel with a demonstrated biocompatibility and tunable biodegradation properties. The two-step crosslinking of GelMA (reversible thermal gelation and permanent photo-crosslinking) has attracted researchers to make complex tissue constructs. Despite promising results in filament formation and printability of this hydrogel, the effect of temperature on physicochemical properties, cytocompatibility, and biodegradation of the hydrogel are to be investigated. This work studies the effect of thermoreversible, physical crosslinking on printability of GelMA. The results of 3D printing of GelMA at different temperatures followed by irreversible chemical photo-crosslinking show that the decrease in temperature improves the filament formation and shape fidelity of the deposited hydrogel, particularly at the temperatures around 15 °C. Time dependant mechanical testing of the printed samples revealed that decreasing the extruding temperature increases the elastic properties of the extruded filaments. Furthermore, our novel approach in minimizing the slippage effect during rheological study enabled to measure changes in linear and non-linear viscoelastic properties of the printed samples at different temperatures. A considerable increase in storage modulus of the extruded samples printed at lower temperatures confirms their higher solid behavior. Scanning electron microscopy revealed a remarkable decrease in porosity of the extruded hydrogels by decreasing the temperature. Chemical analysis by Fourier-transform infrared spectroscopy and circular dichroism showed a direct relationship between the coil-helix transition in hydrogel macromers and its physical alterations. Finally, biodegradation and cytocompatibility of the extruded hydrogels decreased at lower extruding temperatures.
Anthropogenic influence would increase intense snowfall events over parts of the Northern Hemisphere in the future
Authors: Chen Huopo , Sun Jianqi , Lin Wenqing 
Published: September 2020

Abstract
Snowfall is an important element of the climate system and generally has particularly large economic and human impacts. Simulations with climate models have indicated a decline in mean snowfall with warming in most regions. The response of intense snowfall events to a changing climate, however, is unclear. Thus, the degree which anthropogenic influence is responsible for intense snowfall change and how intense snowfall will respond to the changing climate in the future are addressed here using new simulations from Coupled Model Intercomparison Project phase 6 models. The results show that anthropogenic influences on changes in snowfall are detectable across the lands of the Northern Hemisphere and generally result in a decreasing trend in snowfall events. However, increased anthropogenic activity has increased intense snowfall occurrences over most parts of Asia, North America, and Greenland. With additional warming in the future, while the length of the snowy season will be shortened and the areas where snowfall occurs will be reduced, the occurrence probability of an intense snowfall event is projected to significantly increase with a level of high confidence over these regions by the end of this century. This suggests that these regions, including most parts of northern China, would suffer from more intense snowfall events in the future due to a continuous increase in anthropogenic influence.
The effect of wood ash and styrofoam on the characteristics of AC-WC mixture
Authors: Yusputri R M , Saleh S M , Isya M 
Published: September 2020

Abstract
In this study, two types of substitutions, wood ash, and styrofoam, were used in asphalt concrete. The substitution of wood ash and styrofoam for asphalt concrete’s filler is expected to enrich the variations of the asphalt concrete material as well as to reduce the existing industrial waste. This study objective is to determine the effect of the asphalt mixture, which filler was substituted with the wood ash, on the Marshall test results. The initial stage of the research is to examine the physical properties of the asphalt and aggregate. Then, the optimum asphalt content (OAC) of the asphalt mixture was estimated. Then, the asphalt mixture’s filler was substituted with the wood ash and the asphalt material was substituted with the styrofoam. The result of this study is the best combination of the wood ash in asphalt mixture, which is 25% of the total filler, and the best combination of the styrofoam in asphalt mixture, which is 9% of the total asphalt content. With these best combinations of the wood ash and the styrofoam, the obtained Marshall stability of the asphalt concrete was 1,249.01 kg, which fulfills the ‘2018 Bina Marga’ requirement.
Travel cost budget distributions among household life stages considering bus users in Banda Aceh
Authors: Putri A , Sugiarto S , Saleh S M , Basrin D 
Published: September 2020

Abstract
This study aims to investigate the average travel cost budget (TCB) distributions among household life stages (HLS) groups considering the bus users of Trans-Koetaradja in Banda Aceh, capital of Aceh province. This research was conducted within three corridors of Trans Koetaradja. The onboard survey is performed to collect bus users related information such as their monthly travel budget, socio-economic attributes, and travel/mobility characteristics. In this study, we only consider to analysis the distributions and characteristics obtained data sets by deeply investigating socio-demographics and travel attributes of bus users. The analysis result reveals that the group 3 (families with pre-school children) spent the highest average of TCB (0.442 million IDR/month) and group 1 (single person) spent the lowest TCB (0.280 million IDR/month). While group 2 (childless couple) has portion the lowest average of TCB about 10.2% from their monthly income, and group 3 (families with pre-school children) has shared the highest TCB accounting up to 14.4% from their monthly income compared to the remaining groups. This result depicts that an average TCB across HLS groups is considerably high, especially early household life stages development. It is may partially due to a limitation on their monthly income and lack of affordable transport mode for them.
The analysis of roadside obstacles to the performance of Syiah Kuala Street
Authors: Musita R , Anggraini R , Sugiarto S 
Published: September 2020

Abstract
Urban roads are the segments that have permanent and continuous development, at least on one side of the road. The purpose of this study is to evaluate the performance of the road due to side constraints on Syiah Kuala Street, to find out how much the operational costs of the vehicle (BOK) based on the side obstacles on Syiah Kuala Street section, and to find out traffic management recommendations by considering subscriber scenarios. The research result indicates that the maximum volume of the vehicle at peak hour is 1987 pcu/hour (on Monday), and the corresponding roadside obstacle is 551.7, which is categorized in the high class. Based on this data analysis result, it is shown that the capacity on Monday is 1998 pcu/hour with the corresponding degree of saturation as much as 0.99. As a result, the level of service is E (unstable flow, obstructed, with intolerable delay). The average travel speed is around 25 km/hour; v/c ratio is 0.85 - 1.00.
The effect of porous zigzag-type breakwaters on the coastline changes in Neuheun village, Aceh
Authors: Pagihariadi P , Fatimah E , Syamsidik S 
Published: September 2020

Abstract
The process of changing the coastline has always been a challenge for coastal communities. Beach erosion has been a threat with the coastline withdrawing from its previous position. Coastal protection buildings are needed to overcome coastal erosion problems, and alternative construction also needs to be developed. The zig-zag type porous breakwater is quite effective in reducing erosion based on several small-scale physical models that have been developed. Therefore a prototype was built and tested to observe its usefulness, and how it was applied in the field. This study aims to assess the effect of installing zigzag type porous breakwaters on coastline changes. This research began with the installation of construction and continued with observing changes in the coastline. Observations are carried out periodically at any time, to see changes in the contour of the beach that occurs. Observations were made by leveling the beach surface against several transverse profiles. Changes in coastline due to construction will be analyzed by looking at the relation to the wind direction. The results obtained from several observations show that the construction of a zig-zag type porous breakwater has a positive effect in reducing erosion, as long as the breakwater distance with the coastline does not exceed the breakwater length.
Joint operation of parallel reservoir with interconnected tunnel
Authors: Iqbal K , Limantara L M , Soetopo W , Andawayanti U 
Published: September 2020

Abstract
Reservoir operation is strongly influenced by water balance conditions in the catchment area. The amount of inflow, reservoir capacity, and water requirement are major factors in arranging the reservoir operation rules. The purpose of this research is to obtain the extent of the parallel reservoir operation reliability that performed simultaneously by utilizing water transfer from wet to dry watershed. Simulation method used to operate the parallel reservoir with interconnecting tunnel between. From simulated results on three seasons, there are obtained that the water potential to be transferred to the dry watershed. By utilizing this water potential, further simulation for 25 years will come to see the reliability of the joint operating rule in this location.
Hard bearing layers identification of escape hill design for facing tsunami - earthquake disaster at Deah Baroe rural area for natural disaster risk reduction
Authors: Munirwansyah M , Munirwan R P , Sungkar M , Yunita H , Munirwan H , Saharuddin  , Fachrurrazi F , Widilestari W 
Published: September 2020

Abstract
Aceh is surrounded by the Indo-Australia and Euro-Asia subduction plate, which has a profound effect on the occurrence of large tectonic earthquakes above 5 SR which may cause the tsunami. The tsunami which occurred in Aceh on December 26th, 2004 had the large number of the casualties during the 9.3 magnitude earthquake was affected by the lack of temporary evacuation like escape hill. The government’s lack of preparedness for escape hill in order to deal with several serious threats such as the earthquake which may cause tsunami disaster in Banda Aceh. To deal with this serious threat, it is necessary to prepare a place of salvation to face the tsunami, in this case is an escape hill (artificial hill). The objective of this research is to determine the carrying capacity of the hard bearing layers identification of escape hill design and the amount of the settlement, due to the load of the embankment height (Hcrit) and the safety factor value. This research is conducted in Ulee Lheue Banda Aceh which was calculated by the Plaxis 8.2 finite element analysis. The research results found that the settlement value of 17.45 cm still within in the tolerance limits and the bearing stratum is still able to withstand the embankment load. Furthermore, the safety factor value is 1.04 shows that the bearing stratum is still in the safe condition (hard soil) and it does not indicate the failure.
Passenger’s choice in responding to inter-city railway operation for Makassar - Parepare line: a conditional logit model based on stated preference method
Authors: Ramli M I , Yatmar H , Dharmowijoyo D B E , Adisasmita S A , Pasra M , Arif A , Dwiatmoko H , Irawan M Z 
Published: September 2020

Abstract
The present paper aims to model the passenger’s choice in responding to the inter-city railway operation for Makassar-Parepare line. The railway line is the first railway track in Eastern Part of Indonesia, and it is still under construction. In this regard, the study attempted to construct the passenger’s preferences through a conditional logit model approach based on the stated preference method. The study considered some main attributes of transport mode services, i.e., travel cost, travel time, and frequency. In further, the study also taking account into the model two additional attributes of the mode, i.e., transfer travel time and transfer travel cost. The data collection of the study carried out an interview method using questionnaire sheet based the stated preference method. The study experimented with varying the level of service for the main attributes of the two available travel modes, i.e., railway and private car modes. The study results showed that passengers prefer to choose one of both travel modes when the mode has travel time faster than the other one, as well as for the lower travel cost. In addition, the inter-city travelers more considered the transfer travel cost attribute than the transfer travel time attribute, when they face both travel mode choice, the new railway mode, and the existing private car mode.
Effect of utilizing geopolymer fly ash on potential and corrosion rate of reinforcement in high-strength concrete
Authors: Aulia T B , Muttaqin M , Afifuddin M , Zaki M , Firdaus  
Published: September 2020

Abstract
With the increasing use of high-strength reinforced concretes as a structural element of construction, their resistance to corrosion in environmental conditions needs to be studied. It is well known that cement manufacturing at plants is un-environmental friendly due to plenty of fuel consumption and CO2 emission to the atmosphere leading to greenhouse effect. Therefore, substituting cement with environmentally friendly natural materials and natural wastes become a smart solution. This study aims to measure the potential level and corrosion rate of reinforcing steel in high-strength concrete with variations in cement replacement by geopolymer fly ash, environmental conditions, and concrete covering thickness. Corrosion potential measurement was carried out with the half-cell potential mapping method, while the corrosion rate used the linear polarization resistance method. Data collection was executed every two weeks during eight weeks of immersion. High-strength concrete beams with compressive strength target 70 MPa having dimension 15cm x 20cm x 80cm were substituted with 15% coal fly ash (CFA), 15% palm oil blast furnace slag fly ash (POSFA), and 10% pozzolanic fly ash (PFA) from cement weight. High-strength concrete specimens without fly ash substitution were made as a comparison (HSCWFA). It was installed 4 longitudinal reinforcement 010 mm and 7 stirrups 6 mm with a distance of 10 cm. The concrete covering thickness was 2 cm and 4 cm. Immersion medium uses artificial seawater (3.5% NaCl) and shallow well water. The results showed that specimens resulting in the lowest corrosion rate were PFA, CFA, POSFA, and HSCWFA respectively. Corrosion potential was obtained at low to medium levels, while corrosion rates were at low corrosion level criteria. It can be clearly concluded that the utilizing of a geopolymer fly ash could increase the permeability of high-strength concretes through their higher resistance to the penetration of chloride ions.
Noise mitigation based on noise barrier for railway Makassar - Parepare line
Authors: Hustim M , Ramli I , Zakaria R , Evianista E 
Published: September 2020

Abstract
This research aimed to analyze the noise reduction based on the noise barrier along the Makassar-Parepare railway. The measurement was conducted on Makassar-Parepare line, which consists of 4 types of areas. Six of the observation points are in residential areas, 1 point in commerce area, 1 point in the green open space area, and 1 point in the station area. Each region has 6 measurement points. So that the whole measurement points are 54 measurement points. The noise level measurement was conducted using simple SLM (sound level meter) placed at 3 meters from the side of the road with a height of 1.2 meters from the road surface and omitted the background noise by using windscreen from the SLM. Measurements were operated every 10 minutes for four-time intervals which are 06.00-09.00, 09.00-14.00, and at 14.00-17.00. The research result shows the settlement areas consisting of 36 measurement points, in which 69% has exceeded the quality standard, and 31% are still below the standard. For the green open space area which includes six measurement points, 17% has exceeded the quality standard, and 83% are still below the standard. For the commerce area and stations which consist of 6 measurement points, 100% of the areas are still below the standards. The noise barrier design could reduce the noise level 5.0 until 7.7 dB.
Steady flow in a rapidly rotating spheroid with weak precession: Part 2
Authors: Kida Shigeo 
Published: September 2020

AbstractThis is a continuation of our companion paper (Kida 2020b Fluid Dyn. Res.) in which the steady flow in a precessing spheroid is studied in the strong spin and weak precession limit, and the elliptic flow with uniform vorticity, the direction of which is perpendicular to the spin axis on the plane spanned by the spin and the precession axes, is shown to be excited in the interior inviscid region. In this paper we examine the boundary-layer flow connected to this elliptic flow and also the higher-order inviscid flow modified by this boundary-layer flow. The explicit expression of the velocity and pressure fields is obtained for arbitrary aspect ratiocof the polar and equatorial radii of the spheroid. The boundary-layer approximation breaks down at two critical circles on which the boundary-layer thickness as well as the normal component of velocity diverge to infinity. The flow field in the neighborhood (called the critical regions) of the critical circles is analyzed to find the same structure, up to scales, as that for a sphere. The radial component of velocity in the critical region induces the conical shear layers along the characteristic cones in the inviscid region. They reflect on the spheroid surface, and the reflection takes place endlessly in general. On the other hand, it is proved that for a spheroid of which the aspect ratio is expressed asc=3cot[(π/2)(m/n)](m/nbeing an irreducible fraction) the reflection terminates at (n − 2) times and the conical shear layers form a regular pattern. Since such special values ofcare distributed densely over all the positive numbers, we may observe practically always a regular pattern of the conical shear layers. Such closed conical shear layers are clearly visualized by the pressure field numerically calculated in the asymptotic formulation. Furthermore, the total angular momentum of the steady flow is expressed explicitly up to the non-trivial leading order for all the three components over the whole range of the aspect ratio.
Measurements of the currents induced in coaxially confronted superconducting rings
Authors: Paredes E , Galán G Briones , Veira J A , Mosqueira J , Romaní L , Domarco G 
Published: September 2020

Abstract
Very high currents can be induced in pairs of current-carrying superconducting rings when they are coaxially brought closer. If the currents are uniformly distributed through the cross-section of the rings their magnitude can be derived from the mutual inductance of interacting rings. However, if the currents are not uniformly distributed that calculation procedure should be no longer applicable. The aim of this paper is to report on an alternative procedure to determine the induced currents by measuring the magnetic flux density around the rings and applying the Ampre’s circuital law. Our results show that in axially confronted rings the induced currents may be significantly larger than the critical current of an isolated ring, which may be explained in terms of a reduction of the magnetic self-field.
FCSlib: an open-source tool for fluorescence fluctuation spectroscopy analysis for mobility, number and molecular brightness in R
Authors: Pinto-Cámara R , Linares A , Moreno-Gutiérrez D. S , Hernández H. O , Martínez-Reyes J. D , Rendón-Mancha J. M , Wood C. D , Guerrero A 
Published: September 2020

Abstract

Summary
FCSlib is an open-source R tool for fluorescence fluctuation spectroscopy data analysis. It encompasses techniques such as Fluorescence Correlation Spectroscopy, Number and Brightness, Pair Correlation Function and Pair Correlation of Molecular Brightness.

Availability and implementation
Source code available at https://cran.r-project.org/web/packages/FCSlib/ for Linux, Windows and macOS platforms. Sample data as well as a user's guide are available at https://github.com/FCSlib/FCSlib.

Supplementary information
Supplementary data are available at Bioinformatics online.
Development of assisted reproductive technologies forMus spretus†
Authors: Hasegawa Ayumi , Mochida Keiji , Matoba Shogo , Inoue Kimiko , Hama Daiki , Kadota Masayo , Hiraiwa Noriko , Yoshiki Atsushi , Ogura Atsuo 
Published: September 2020

AbstractThe genus Mus consists of many species with high genetic diversity. However, only one species, Mus musculus (the laboratory mouse), is common in biomedical research. The unavailability of assisted reproductive technologies (ARTs) for other Mus species might be a major reason for their limited use in laboratories. Here, we devised ARTs for Mus spretus (the Algerian mouse), a commonly used wild-derived Mus species. We found that in vitro production of M. spretus embryos was difficult because of low efficacies of superovulation with equine chorionic gonadotropin or anti-inhibin serum (AIS) (5–8 oocytes per female) and a low fertilization rate following in vitro fertilization (IVF; 15.2%). The primary cause of this was the hardening of the zona pellucida but not the sperm’s fertilizing ability, as revealed by reciprocal IVF with laboratory mice. The largest number of embryos (16 per female) were obtained when females were injected with AIS followed by human chorionic gonadotropin and estradiol injections 24 h later, and then by natural mating. These in vivo-derived 2-cell embryos could be vitrified/warmed with a high survival rate (94%) using an ethylene glycol-based solution. Importantly, more than 60% of such embryos developed into healthy offspring following interspecific embryo transfer into (C57BL/6 × C3H) F1 female mice. Thus, we have devised practical ARTs for Mus spretus mice, enabling efficient production of embryos and animals, with safe laboratory preservation of their strains. In addition, we have demonstrated that interspecific embryo transfer is possible in murine rodents.