bluuebunny/crossref_metadata_2025_split huggingface dataset:
Induced neural stem cell differentiation on a drawn fiber scaffold—toward peripheral nerve regeneration
Authors: Keshavarz Meysam , Wales Dominic J , Seichepine Florent , Abdelaziz Mohamed E M K , Kassanos Panagiotis , Li Quan , Temelkuran Burak , Shen Hongxing , Yang Guang-Zhong 
Published: April 2020

Abstract
To achieve regeneration of long sections of damaged nerves, restoration methods such as direct suturing or autologous grafting can be inefficient. Solutions involving biohybrid implants, where neural stem cells are grown in vitro on an active support before implantation, have attracted attention. Using such an approach, combined with recent advancements in microfabrication technology, the chemical and physical environment of cells can be tailored in order to control their behaviors. Herein, a neural stem cell polycarbonate fiber scaffold, fabricated by 3D printing and thermal drawing, is presented. The combined effect of surface microstructure and chemical functionalization using poly-L-ornithine (PLO) and double-walled carbon nanotubes (DWCNTs) on the biocompatibility of the scaffold, induced differentiation of the neural stem cells (NSCs) and channeling of the neural cells was investigated. Upon treatment of the fiber scaffold with a suspension of DWCNTs in PLO (0.039 g l−1) and without recombinants a high degree of differentiation of NSCs into neuronal cells was confirmed by using nestin, galactocerebroside and doublecortin immunoassays. These findings illuminate the potential use of this biohybrid approach for the realization of future nerve regenerative implants.
Evaluating CMIP6 model fidelity at simulating non-Gaussian temperature distribution tails
Authors: Catalano A J , Loikith P C , Neelin J D 
Published: April 2020

Abstract
Under global warming, changes in extreme temperatures will manifest in more complex ways in locations where temperature distribution tails deviate from Gaussian. Confidence in global climate model (GCM) projections of temperature extremes and associated impacts therefore relies on the realism of simulated temperature distribution tail behavior under current climate conditions. This study evaluates the ability of the latest state-of-the-art ensemble of GCMs from the Coupled Model Intercomparison Project phase six (CMIP6), to capture historical global surface temperature distribution tail shape in hemispheric winter and summer seasons. Comparisons with a global reanalysis product reveal strong agreement on coherent spatial patterns of longer- and shorter-than-Gaussian tails for both sides of the temperature distribution, suggesting that CMIP6 GCMs are broadly capturing tail behavior for plausible physical and dynamical reasons. On a global scale, most GCMs are reasonably skilled at capturing historical tail shape, exhibiting high pattern correlations with reanalysis and low values of normalized centered root mean square difference, with multi-model mean values generally outperforming individual GCMs in these metrics. A division of the domain into sub-regions containing robust shift ratio patterns indicates higher performance over Australia and an overestimation of the degree to which tails deviate from Gaussian over southeastern Asia in all cases, whereas model skill over other regions varies depending on season and tail of the temperature distribution. For example, model performance during boreal winter indicates robust agreement (>85% models) with reanalysis for shorter-than-Gaussian warm tails over the Northern Hemisphere, whereas cold-tail shape is generally mischaracterized by GCMs over western Russia. Although there is spatial and model variability, overall, results highlight the capability of the CMIP6 ensemble in capturing seasonal temperature distribution deviations from Gaussianity, boosting confidence in model utility and providing insight into the complexity of future changes in temperature extremes.
Utilization of fermented rice straw biomass and soybean oil supplementation on digestibility, efficiency, and the bodyweight of local sheep
Authors: Hafid H , Patriani P 
Published: April 2020

Abstract
Improvement of the quality of rumen food must be supported by improvements that support bioprocess in the rumen because rumen is the largest part of the digestive system of ruminants. Nutrition addition is a must if the ration used is fibrous waste such as fermented rice straw. Feed processing technology must be integrated with the nutrient addition of microbial biomass synthesis precursors, such as nitrogen, sulfur, macro minerals and energy, and long-chain fatty acids. This research was conducted to evaluate the utilization of fermented rice straw biomass using soybean oil addition on digestibility, feed efficiency and daily gain in local sheep. Eighteen, male local sheep aged 6-8 months with an average live weight of 22.31 ± 2.20 kg, were fed with 15% rice straw and 85% concentrate as the basic feed. The study was conducted with an experimental method in vivo. The adaptation period was carried out for 2 weeks, preliminary for 21 days and a collection period of 5 days using individual cages. Three diet treatments were supplemented control 0% (R1), supplement with 3% soybean oil (R2) and supplement with soy oil 6% (R3) of total dry matter intake. The parameters measured were dry matter digestibility, organic matter, and daily gain. Based on the results of the study it can be concluded that the addition of 6% soybean oil in the sheep feed, with the balance of 15% fermented rice straw and 85% concentrate did not affect and interfere with the digestibility of dry matter and organic matter, and did not significantly influence the daily gain and efficiency of sheep feed.
Formulation of alternative demulsifiers with palm oil based surfactants for crude oil demulsification
Authors: Saputra Fajar Bagas , Fujita Haruhiro , Hambali Erliza 
Published: April 2020

AbstractPalm oil-based surfactants were used to formulate demulsifiers for crude oil demulsification as alternatives to petroleum-based surfactants. A light crude oil sample obtained from x field crude oil well contained 0.713% (w/w) asphaltene and 25.75% BS&W. The formulation of demulsifiers was carried out by the selection of a primary surfactant from Sodium Methyl Ester Sulfonate (SMES) and Diethanolamide (DEA), and the concentration of co-surfactant addition. The best formulation was SMES as a primary surfactant with the addition of a 10% DEA co-surfactant. The best solvent was the solution of toluene and xylene (1:1). The temperature treatment of 80 °C separated 100% water from crude oil emulsion and decreased BS&W to 5.45%.
Synthesis of potassium methyl ester as foaming agent
Authors: Rizka Fauzan Putra , Fujita Haruhiro , Hambali Erliza 
Published: April 2020

Abstract
Forest and land fires in Indonesia have been historically causing extensive damages and losses on economies, ecosystems, and environment, and affects all life in the region. Forest fire management in Indonesia still relies on water that is less effective than foaming agents i.e., extinguishers. Chemicals used in conventional extinguishers are expensive. Foaming agents based on palm oil can be used as an alternative for the extinguishers. The foaming agent synthesized in this study was potassium methyl ester, made from palm oil methyl ester (ME), with saponification by adding potassium hydroxide (KOH). The forming performance tests (foam stability and forming ability) and form related physicochemical analyses (surface economies, interface surface tension, density, and contact angle) of potassium methyl ester were conducted with ME:KOH molar ratio of 1:1; 1:1.25; and 1:1.5 and the saponification duration of 1.5, 2 and 2.5 hours. The molar ratio had significant effects on foam stability, interface surface tension, density, and contact angle. The duration of the saponification had a significant effect on density. There was no significant effect of the interaction between the molar ratio and saponification duration. The best foaming agent selected by the ranking method (composite performance index) of foam stability, foaming ability, and surface tension were one with ME:KOH molar ratio of 1:1 and 1.5 hours saponification.
Final report on the pilot plant operation for supercritical water gasification of wet biomass
Authors: Matsumura Yukihiko , Inoue Shuhei , Inoue Takahito , Kawai Yoshifumi , Noguchi Takashi , Tanigawa Hiroaki 
Published: April 2020

Abstract
Supercritical water gasification has been developed as gasification technology for wet biomass. This is because the reaction takes place in water, and drying pretreatment is not needed. So far, production of gas and utilization of this producer gas has been discussed. However, devices to use gas such as gas engine or fuel cell are expensive. One possibility is to use heat as final product. To examine the possibility to use heat from supercritical water gasification, the pilot scale plant located in Chugoku Electric Power Co., Inc. was modified, and heat recovery experiment was conducted. To avoid the char production, addition of radical scavenger was also tried. Heat recovery with the efficiency of 24.7 % was achieved and DSS operation for 147 h 30 min in total was successful.
Molecular functional group and optical analysis on chlorophyll of green choy sum and cassava leaves extracts
Authors: Palupi Endah Kinarya , Nazopatul P H , Umam Rofiqul , Bibin Andriana B , Sato Hidetoshi , Alatas Husin , Irzaman  
Published: April 2020

AbstractRecently, chlorophyll can improve the optical characteristics of thin films. The role of chlorophyll is a dopant in the thin film. Chlorophyll is very good in transferring electron which is strongly related to energy. If the energy gap of the film is low, the characteristics of the film are better because it requires less energy to jump one electron from the valence band to the conduction band. However, an important factor to consider in this case is the chlorophyll content. The more chlorophyll content will improve the light absorption rate. This study examined the characterization of chlorophyll of green choy sum and cassava leaves extracts. The analysis was carried out based on the Fourier Transform Infra-Red (FTIR) and UV-Vis Spectrophotometer. The results of the analysis were molecular functional groups, vibration frequencies, bond force constants between molecules, optical characteristics and chlorophyll content on both of chlorophyll extracts.
Mechanical and flame-retardant properties of oil palm empty fruit bunches
Authors: Riza Okta , Nikmatin Siti , Hendradi H , Firda AS 
Published: April 2020

Abstract
In this work we studied the mechanical and flame retardant properties of Oil Palm Empty Fruit Bunches (OPEFB). Currently, the use of OPEFB waste in Indonesia is not optimal and the amount of the waste continues to increase every year. In this study, we optimized the flame retardant properties of non-woven OPEFB fibers. The OPEFB fiber was modified by making it non woven and treated in situ by immersing it with a mixture of NaOH and CaCl2 solution (flame retardant-1 treatment) and also a mixture of KOH and CaCl2 solution (flame retardant-2 treatment). In addition, the treated fibers were investigated for surface morphology and tested for thermal and tensile strength tests. Provision of flame retardant treatment in non woven fibers can improve flame retarding and mechanical properties. The objective of this study was optimization of flame retardant treatment of OPEFB. Non woven fiber which was treated with the first flame retardant with a concentration of 3 M did not burn for 12 seconds. The vertical flame test showed that the burning time until the fiber runs out was slowed to 39 seconds. Fibers treated with NaOH and CaCl2 with 3 M concentration also had the best tensile strength values of 8.13 MPa. In the morphology test, non-woven fibers with the first flame retardant treatment were better than non woven fibers with the second flame retardant treatment.
Biomass (rice husk) as a fuel for sterilizing oyster mushrooms: a case study of fuel efficiency comparison, temperature distribution and production effectiveness
Authors: Abdurrahman  , Irwansyah R F , Umam R , Syazali M , Junaidi R , Palupi E K , Irzaman  
Published: April 2020

Abstract
The study on the efficiency of biomass fuel (rice husk) was carried out in the sterilization of oyster mushrooms by using drums as sterilization media and convection pipes as accelerators for heat transfer throughout the sterilization chamber. Variations in diameter and number of convection pipes were used as a comparison in this study. The measurement of thermal temperature was carried out using a thermo laser. In addition, the interpretation of the thermal distribution of the room was analyzed using Surfer software that was performed as a comparison between the number and diameter of convection pipes and determining the distribution of temperature using numeric interpolation. The use of oyster mushroom production using convection pipes 1 rod with a diameter of 8 cm showed the best results, temperature distribution, the efficiency of fuel use in this study. In addition, the comparison of the number of pipes also proved that convection pipes have a temperature distribution that is more equivalent to the number of convection pipes 3 rods. However, the efficiency in the use of fuel using convection pipes 1 rod with a diameter of 6 cm showed a better value than the other.
Cover Crops and Frond Piles for Improving Soil Water Infiltration in Oil Palm Plantations
Authors: Agusta H , Handoyo G C , Sudaryanto M T , Hendrayanto  
Published: April 2020

Abstract
Oil palm plantations may cause problems in the hydrological cycle due to a low soil water infiltration capacity. In this study, we (a) compared oil palm plantations with other land use types, and (b) within oil palm plantations, analyzed whether legume cover crops and the deposition of frond piles can change soil water infiltration. The study was conducted in the lowlands of Sumatra in mixed jungle rubber stands, and in monospecific rubber and oil palm plantations by using ring in filtrometers. Observed in filtration rates in jungle rubber and monospecific rubber stands (approximately 20 cm h−1) were about 5 times higher than in oil palm plantations, underlining the problem. Within the oil palm cultivation system, a legume cover crop, as well as the deposition of palm fronds, significantly enhanced infiltration rates. We conclude that indeed low soil water infiltration is very low in conventional oil palm plantations. Management including the planting of cover crops and deposition of fronds may offer options for improving the situation.
Numerical Simulation of Flow Characteristics of Particle Agglomerates in Desulfurization Tower
Authors: Xu Chunxing 
Published: April 2020

Abstract
In this paper, the gas-solid two-phase flow in a multi-stage spouting desulfurizer is simulated by using large eddy model and viscous particle dynamics theory. The simulation results show that the agglomeration velocity and concentration of particles in the first-order tower are high, while the agglomeration velocity and concentration of particles in the second-order tower are low. Moreover, the results show that the particles form a stable fluidization in the tower, showing a typical flow distribution trend of the ring core and realizing a stable internal circulation. In this paper, the influence of inlet gas velocity and mass flow rate on the internal circulation of desulfurization tower are also analyzed.
International Rare Earth Supply and Demand Forecast Based on Panel Data Analysis
Authors: Guangli YAN , Zhongxue LI 
Published: April 2020

Abstract
Rare earth supply and demand forecasting plays a crucial role in the development of the rare earth industry, but there are some problems in common prediction methods, such as big error and insufficient authenticity. Through the use of panel data analysis methods to predict and analyze international rare earth supply and demand can greatly improve the authenticity and reliability. Spatially analyze the positive correlation between international rare earth supply and national GDP, rare earth production, and rare earth imports, while negatively correlated with the price of rare earth. From the time analysis, the international rare earth consumption presents the general trend of decline. At the same time, the supply and demand forecast of rare earth in China is analyzed and compared and strive to provide an important reference for the comprehensive development and utilization of rare earth resources in China through the analysis of panel data.
Modeling and Simulation Active Vibration Control of Flexible Solar Wing Support Structure
Authors: Zhang Pengwei , Li Yinghao , Hu Haichen 
Published: April 2020

Abstract
In this paper, the flexible solar wing support structure is taken as the research object, and the vibration is actively controlled by the piezoelectric material. In this paper, the Euler-Bernoulli beam theory is used to simplify the overall model structure. The principle of Language and the hypothetical modal method are used to derive the dynamic model of the piezoelectric flexible system. The obtained system dynamics model was simulated by PID control, and good results were obtained.
Research on Residual Value Evaluation of Battery Electric Vehicles Based on Replacement Cost Method
Authors: Li Hongwei , Chen Chuan 
Published: April 2020

Abstract
Knowledge about the value of used battery electric vehicles (BEVs) is critical for potential BEV purchasers, corporations, and governments to consider the total cost of ownership for BEVs. This study introduces a new method to evaluate the residual value of BEVs in China and provides the evaluation results. We innovatively separate the power battery from the battery electric vehicle and apply big data analysis methods to research the residual value of these two parts. We find that with the improvement of the power batteries technology, the residual rate of power batteries is higher than that of vehicles. However, whether or not to get subsidies has a great impact on the value residual rate of vehicle, we also find that at present BEVs still cannot develop independently without subsidy in China, because the low value residual rate will affect consumers’ purchase decision.
A new method for charging and repairing Lead-acid batteries
Authors: Sun R L , Hu P Q , Wang R , Qi L Y 
Published: April 2020

Abstract
With the rapid development of China’s electric vehicle industry, the demand for vehicle-mounted lead-acid batteries is increasing, and higher requirements are put forward for their safety and reliability. There are some problems in lead-acid batteries, such as short service life and decreasing capacity. In this paper, a new method of charging and repairing lead-acid batteries is proposed. Firstly, small pulse current is used to activate and protect the batteries in the initial stage; when the current approaches the optimal current curve, the phase constant current charging is used instead, when the voltage is low. When the value is in stable state, the polarization and vulcanization phenomena of batteries in the earlier stage can be eliminated by using the composite resonant pulse repair technology. When the vulcanization and polarization phenomena are eliminated successfully, the REFLEXYM charging method is carried out immediately to protect the batteries, and the batteries can be controlled by intermittent charging at this stage. The phenomenon of temperature rise is helpful to prolong the life of the battery. Finally, it enters the floating charging stage, providing a very small trickle current to compensate for the self-loss of the battery, so that the battery can remain fully charged.
This new charging and repairing method can not only eliminate the polarization and vulcanization of the battery, but also control the temperature rise of the battery, which can extend the service life of the battery. This paper gives the specific methods to solve the polarization and vulcanization of batteries and the working principle of each charging stage.
Finite Element Analysis of Marine Weapon Lift Based on ANSYS
Authors: Su Wanshan 
Published: April 2020

Abstract
In order to improve the dynamic characteristics of a shipborne weapon elevator and reduce the adverse effects of harmonic vibration on the elevator under sea conditions, the finite element model of weapon elevator is established by ANSYS/Workbench, and the modal analysis, harmonic response analysis and static strength analysis of the elevator under dynamic load are carried out. The analysis results are obtained: The harmonic frequency is far less than the first natural frequency of the elevator under the external sea condition, so the system will not suffer from resonance damage and meet the strength requirements; the external excitation frequency of the elevator should be avoided from 20 to 40 Hz, and the deformation of the side plate in motion is the largest, but within the control range, it does not affect the docking of adjacent components. Improvement measures are put forward to increase safety factor and anti-vibration ability.
Research on the relationship between the cost of power cable project and the periodic change of macroeconomic index
Authors: Wang Hanze , Ma Xin , Huang Kai , Liu Jinpeng 
Published: April 2020

Abstract
Cable line engineering is an important part of the transmission network. With increased urban development and the improvement of transmission lines, the investment scale is expanding. HP filter that is improved using the multifractal detrended fluctuation algorithm is used to analyze the periodic characteristics between the comprehensive cost index and macroeconomic indicators. And through the comprehensive cost index to optimize the accuracy of sample data. It is found that the fluctuation inflection point of power cable engineering’s comprehensive cost index is 0.5-0.7 years slower than those of the CPI and PPI. This research conclusion provides theoretical support for optimizing the calculation method of the driving factors of power grid project costs, the scientific analysis of power grid project cost trends, and rational investment planning.
Study on the relationship between mucilage cells and low temperature tolerance of Sedum aizoon L.
Authors: Zhang Ruijie , Chen Yan , Yang Luxi , Xie Yongdong , Yan Wenyi , He Zhongqun 
Published: April 2020

AbstractMucilage cells were generally distributed in the vegetative organs of dicotyledons. We tried to analyse the relationship which was unknown between mucilage cells and the frost resistance by plant tissue staining technique, semi-lethal temperature and freezing injury index in Sedum aizoon L.The results showed that the number of mucilage cells was significantly larger than control group in the leaves and stems with experimental group. The semi-lethal temperatures were -3.34°C and <-5°C, respectively, when the aboveground parts grew at 25°C and 5°C. Further, the freezing injury investigation was consistent with the above results, indicating the close relationship between mucilage cells and the frost resistance in aboveground parts of Sedum aizoon L.