bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics of Cracking Palm Oil Methyl Esters in Temperatures 280°C using Zeolite Natural Catalyst of Mamasa
Authors: Denny  , Sarungallo R. S. , Patangke G. , Halimaking W. L. , Taba P. , Soekamto N. H. 
Published: March 2020

Abstract
The aim of this study is to characterize cracked products by GC-MS analysis and test the performance of natural zeolite catalysts originating from Mamasa in the catalytic crack reaction of methyl esters from palm oil for short chain hydrocarbons at 280°C. The method used for catalytic cracking of methyl ester includes 3 steps, namely the preparation of natural zeolite catalyst, catalytic cracking reaction at 280°C temperature, and analysis of cracked methyl ester. The characteristics of GC-MS cracking methyl esters indicate the addition of palmitoleic acid, and oleic acid. Cracking reaction of methyl ester at 280°C does not occur, the conversion of the reaction to form undesirable compounds namely carbon chains > C15, so the natural zeolite catalyst from Mamasa is not selective for cracking reaction at 280°C.
Fermentation Juice Sweet Sorghum Genotip 4-183A using Batch System by Optimizing the Concentration of Inoculum and Substrate
Authors: Sarungallo R S , Melawaty L , Djonny M , Bulo L , Mangera L , Pabendon M B , Sarungallo Z L 
Published: March 2020

Abstract
The potential of sweet sorghum in Indonesia as a raw material for bioethanol production is very large. Sweet sorghum is a plant not a food crop. Sweet sorghum juice is a liquid containing sugar can be produced by extracting or pressing sorghum stems. The sugar content of sweet sorghum juice varies depending on the type, one of which is genotype 4-183 A. The purpose of this research is to optimize the conditions of inoculum and substrate using a batch system. The parameters to be analyzed are the percentage of bioethanol yield, total biomass or yeast cells and total sugar content. This research shows that the process of fermentation-batch of juice sweet sorghum of genotype 4-183A with 9% optimum inoculum concentration and 16% optimum glucose concentration can produce high concentrations of biethanol.
Prospective strategies for sustainable local economic development in support of the SDGs’ goals “inclusive and sustainable economic growth” in the border region of Indonesia – Timor Leste, Belu Regency, East Nusa Tenggara Province, Indonesia
Authors: Paulus Chaterina A , Azmanajaya Emil , Pellokila Marthen R , Paranoan Natalia 
Published: March 2020

Abstract
In supporting inclusive and sustainable economic growth from the SDGs Program, Indonesia through the National Development Agenda (Nawacita) program takes a role in building border areas that are relatively isolated from relations with growth centers and centers of economic activity. The purpose of this paper is to formulate a sustainable local economic development (LED) strategy through a system approach, namely prospective analysis. Strategies developed based on scenarios that might occur in the future by considering the influence and dependence of key factors on competitiveness and performance. The results of prospective analysis are scenarios for developing LEDs through rural business incubator with an ability of technological innovation. This scenario is an optimistic scenario for establishing a rural business unit or known as BUMDes by taking into account the factors of competitiveness and performance. This scenario will occur if all the main competitiveness factors include technology innovation, rural business incubators, institutional cooperatives, product diversification and product marketing develop positively. Meanwhile, the operational recommendations from the chosen scenario are that the regional government needs to decide on a conducive policy to develop LEDs into professional and independent BUMDes. In addition, local governments need to operationally monitor and evaluate the main performance of BUMDes in order to increase economic growth in an inclusive and sustainable border region.
Selection of regularization parameter in sparse inverse problems for DOA estimation
Authors: Delmer Alice , Ferréol Anne , Larzabal Pascal 
Published: March 2020

Abstract
This article deals with the selection of the regularization parameter of a sparse ℓ
0 regularized criterion for DOA (Direction-of-Arrival) estimation. This parameter is generally empirically obtained. In this paper, we establish a theoretical range for this parameter allowing a correct estimation for a single observation. Considering that an observation is the eigenvector associated with the maximum eigenvalue of the covariance matrix, we extend the analysis to multiple observations. Numerical results support our theoretical investigations.
A multi-resolution computational method to solve highly non-linear inverse scattering problems
Authors: Salucci Marco , Polo Alessandro , Xu Kuiwen , Zhong Yu 
Published: March 2020

Abstract
An innovative computational method to solve inverse scattering problems is proposed for retrieving the electromagnetic properties of unknown targets. The proposed technique is based on the contraction integral equation for inversion (CIE-I) method to mitigate multiple scattering contributions when imaging strong scatterers. More specifically, the CIE-I is integrated in an effective multi-resolution (MR) scheme to reduce the ratio between unknowns and non-redundant data as well as to exploit iteratively acquired information on the scenario for yielding higher-resolution reconstructions. Some preliminary numerical results are reported to assess the capabilities of the proposed MR-CIE-I method.
Bayesian data assimilation with Transport Map sampling and PGD model order reduction
Authors: Rubio P-B. , Louf F. , Chamoin L. 
Published: March 2020

Abstract
The motivation of this work is to address real-time sequential inference of parameters with a full Bayesian formulation. The Transport Maps method allows to determine a coupling between a reference density and the posterior density. Here, the contribution is to use the Proper Generalized Decomposition method (PGD) to reduce the evaluation cost of the multi-parametric numerical model and to speed up the minimization algorithm in the Transport Map method by calculating the models derivatives with reference to the parameters in a straightforward manner with non-analytical models. A numerical example highlights the performance of the method.
A multi-focusing contrast source Bayesian compressive method for solving inverse scattering problems
Authors: Gottardi Giorgio , Abdul Hannan Mohammad , Polo Alessandro 
Published: March 2020

Abstract
This work presents a novel inverse scattering (IS) methodology to deal wit.li the retrieval of the electromagnetic (EM) properties of unknown scat.t.erers. The proposed technique is based on the effective combination of a customized Bayesian compressive sensing (BCS) solver wit.li the iterative multi-scaling approach (IMSA). Accordingly, a-priori information on the class of imaged targets as well as progressively acquired information on their location and size is exploited to yield accurate and robust reconstructions. Moreover, a contrast source inversion (CSI) formulation is adopted in order to enable the retrieval of lion-Born scat.t.erers. Numerical results are shown to verify the effectiveness of the proposed IMSA-BCS-CSI method, as well as to compare it with state-of-the-art alternatives.
Halving warming with stratospheric aerosol geoengineering moderates policy-relevant climate hazards
Authors: Irvine Peter J , Keith David W 
Published: March 2020

Abstract
Stratospheric aerosol geoengineering is a proposal to artificially thicken the layer of reflective aerosols in the stratosphere and it is hoped that this may offer a means of reducing average climate changes. However, previous work has shown that it could not perfectly offset the effects of climate change and there is a concern that it may worsen climate impacts in some regions. One approach to evaluating this concern is to test whether the absolute magnitude of climate change at each location is significantly increased (exacerbated) or decreased (moderated) relative to the period just preceding deployment. In prior work it was found that halving warming with an idealized solar constant reduction would substantially reduce climate change overall, exacerbating change in a small fraction of places. Here, we test if this result holds for a more realistic representation of stratospheric aerosol geoengineering using the data from the geoengineering large ensemble (GLENS). Using a linearized scaling of GLENS we find that halving warming with stratospheric aerosols moderates important climate hazards in almost all regions. Only 1.3% of land area sees exacerbation of change in water availability, and regions that are exacerbated see wetting not drying contradicting the common assumption that solar geoengineering leads to drying in general. These results suggest that halving warming with stratospheric aerosol geoengineering could potentially reduce key climate hazards substantially while avoiding some problems associated with fully offsetting warming.
Photoluminescence of Silica Made by Sol-gel Method
Authors: Wang Junling , Wang Xiuting , Guo Yu , Wang Yang , Zhu Zeya 
Published: March 2020

Abstract
Photoluminescence of one kind of silica was made by a kind of sol-gel method was investigated. The heat treatment temperature of the obtained gel was 5090°C for 2 days and 90°C for 2 hours. Photoluminescence spectra and excitation spectra was investigated and analysed by a Gauss decomposition method. The emission spectra of silica composed of peaks 2.34eV, 2.65 eV and 3.10 eV. The excitation spectrum consisted of 3.1 eV and 5.18 eV. Meanwhile emission of 2.65 eV and 2.34 eV had common excitation peak of 5.18 eV.
Perceptual Engineering and Related Research Based on the Design of Door and Window Hardware Handles
Authors: Guo Xu , Li Minghui 
Published: March 2020

Abstract
The main purpose of this research is to introduce the sensibility engineering to explore the relationship between the modeling style of the door and window hardware handle and the sensibility vocabulary, and through the results of this research, the design of the door and window hardware handle is more scientific. The analysis establishes a basis for its styling design and consumer perception criteria and manufacturer design. The purpose of this study is to solve the post-evaluation problem of product design. The method proposes a design evaluation method based on Analytic Hierarchy Process (AHP). Firstly, the product is decomposed into several indicators to be evaluated and scored, and the data is calculated and the weight values of each index are calculated. The overall score of the program is further ordered. The result is the accuracy of the sorting result verified by the market sales survey data of 3 door and window hardware handles, which provides a reference for the effective evaluation of product design. The conclusion is that the introduction of AHP into design evaluation can effectively reduce the disadvantages of many factors in the design evaluation, such as the factors to be evaluated, the reliance on the evaluator’s experience and knowledge, and the difficulty of judging the relationship between each factor and the final solution. Influences.
Bayer Marker Detection based on Yolov3
Authors: Li Xingxing 
Published: March 2020

Abstract
With the development of artificial intelligence technology, target detection is widely used in many commercial fields, such as automatic driving, security monitoring and robotics, especially the deep learning algorithm has brought about a significant improvement in target detection performance. Bay number identification has a wide range of applications in industrial scene understanding. It can be used for character positioning and is applied to driverless. The accurate detection of shell number is the basis for subsequent character recognition. Character recognition is after character detection. In this paper, yolov3 target detection algorithm is used to realize the shell number text detection. Compared with yolov2 algorithm, yolov3 uses multi-scale prediction, and adopts feature maps of different scales to extract image features to adapt to different sizes of objects, and to use better. The basic classification network (ResNet-like) and classifiers use multiple logistic classifiers instead of the sorttmax classifier to solve the problem of multi-label classification.
Research and Application of a Reverse Design Method for Noncircular Gear
Authors: Huang Zhidong , Gu Quan 
Published: March 2020

Abstract
The traditional design method of noncircular gear is broken through. A reverse design method of noncircular gear is presented. Take the design of noncircular gear teaching aid with variable transmission ratio for example, the mathematical model is established. Based on determined reducer box, the parameter criterion of noncircular gear oriented to unchanged center distance is deduced. And elliptical gear mechanism suitable for the reducer box is obtained. The design example of noncircular gear teaching aid with variable transmission ratio shows the validity of reverse design method of noncircular gear, which facilitates the standardization design for reducer for noncircular gear.
Synthesis and Crystal Structure of N, N’-Bisphenylacetic Hydrazide
Authors: Wang Lihua , Xu Ke , Wang Ning 
Published: March 2020

Abstract
A bishydrazone compound, C16H16N2O2, has been synthesized by the reaction of phenylacetic hydrazide and phenylacetyl chloride in CH3CH2OH solution. The crystal structure of C16H16N2O2 has been characterized by single crystal X-ray diffraction analysis. The result shows that the N, N’ -Bisphenylacetic hydrazide belongs to triclinic, space group P-1 with a = 5.5280(11) Å, b = 8.0010(16) Å, c = 15.279(3) Å, a = 94.39(3)°, β = 92.20(3)°, γ = 91.52(3)°, V = 673.0(2)Å3, Z = 2, Dc = 1.324 mg·m−3, μ = 0.089 mm−1, F(000) = 284, and final R1 = 0.0447, ωR2
= 0.1041. The N, N’- Bisphenylacetic hydrazide molecules form 1D chained structure by the intermolecular hydrogen bonding interactions along the bc plane.
Synthesis and Crystal Structure of (S)-2-(3-Oxo-1,3- Dihydroisobenzofuran-1-yl)phthalazin-1(2H)-One
Authors: Tai Xishi , Xue Weixi 
Published: March 2020

Abstract
A heterocycle compound, C16H10N2O3, has been synthesized by the reaction of hydrazine hydrate, 2-carboxybenzaldehyde and magnesium chloride hexahydrate in CH3CH2OH-water (v: v= 1: 1) solution. The crystal structure of (S)-2-(3-oxo-1, 3- dihydroisobenzofuran-1-yl) phthalazin-1(2H)-one has been determined by X-ray single crystal diffraction analysis. The result shows that the (S)-2-(3-oxo-1, 3- dihydroisobenzofuran-1-yl) phthalazin-1(2H)-one belongs to triclinic, space group P-1 with a = 7.2049(8) Å, b = 8.0215(9) Å, c = 10.9938(14) Å, a = 81.120(10)°, β = 85.939(10)°, γ =88.934(9)°, V = 626.17(13) Å3, Z = 2, Dc = 1.476 mg·m−3, μ = 0.104 mm−1, F(000)=288, and final R
1 =0.0935, ωR
2 = 0.1018. The title compound molecules form 3D network structure by the interaction of aza-heterocycle and oxa-heterocycle of (S)-2-(3-oxo-1, 3-dihydroisobenzofuran-1-yl) phthalazin-1(2H)-one molecules.
Cu precipitation behaviour in long-term thermally aged, high-copper model reactor pressure vessel steels
Authors: Liu Xiangbing , Li Yuanfei , Xu Chaoliang , Xue Fei , Qian Wangjie , Huang Ping 
Published: March 2020

Abstract
Nanoscale Cu-rich precipitates that were formed in Cu-containing reactor pressure vessel (RPV) steels during service have a deleterious effect on mechanical properties, which can result in RPV embrittlement and limit reactor operation life. To understand the nanoscale precipitation mechanism, thermal aging at 370°C for up to 13200 h of high-copper RPV model steels was performed to produce nanosized Cu-rich precipitates. Then the Cu-rich precipitates were systematically investigated by atom probe tomography (APT). The changes in the mechanical properties of the steels were characterized by Vickers hardness test. The results show that the Cu-rich precipitates as determined by APT construction analysis have a spatial core-shell structure. The core is enriched with Cu atoms, and the region near the precipitate/matrix interface is enriched with Mn, Ni, Mo, and Si and C atoms. Cu-rich precipitates lead to precipitation strengthening and hardening/embrittlement effects. Using the Russell-Brown model, we estimated the hardening due to Cu-rich precipitates in the matrix and observed that the measured hardness and the estimated changes in hardness were in good agreement.
Microstructure Analysis of Attapulgite Clay Minerals
Authors: Cheng Jie , Ge Lei , Wei Jing , Meng Tingting 
Published: March 2020

Abstract
Land is the foundation of human being. However, with the rapid development of human society, soil is no longer clean, and soil remediation is imminent. Passivation of heavy metals in soils by passivates is a relatively economical, rapid and reasonable treatment measure. In this paper, the microstructure of attapulgite clay minerals and acid-modified attapulgite clay minerals are qualitatively and quantitatively analyzed by scanning electron microscopy. The results show that the attapulgite clay minerals have rough micro-surface, more synapses on the surface after modification, higher porosity, higher pore fractal dimension, larger probability entropy, and larger passivation potential of heavy metals.
Application of 3D Printing Technology in the Field of Ceramic Material Manufacturing
Authors: Xu An 
Published: March 2020

Abstract
3D printing has been widely used in medical model manufacturing, tissue organ regeneration, clinical repair treatment and drug development testing, especially in the field of dental ceramic material manufacturing. Based on microfluidic extrusion 3D printing technology, micro ceramic components with complex shapes can be customized by a selective slurry extrusion system. In this paper, zirconia ceramic slurry is used as the molding object, and the physicochemical properties of zirconia ceramic slurry are improved by tourmaline. The zirconia all-ceramic crown is rapidly manufactured by micro-flow extrusion 3D printing technology, and the process is further tested and analyzed. The influence of the mechanical properties of zirconia ceramics.
Fabricating Micro-texture on Surface of Cutting Tool Based on NC WEDM Technology
Authors: Yang Fengshuang , Pan Chen , Shi Yingyu 
Published: March 2020

Abstract
It is a very complex and difficult technology to fabricate micro-texture on tool surface. At present, available technology such as laser marking, femtosecond laser, ion beam and WEDM can be used to fabricate micro texture. However, little research has been done on the fabrication of micro-texture by WEDM. In this experiment, micro-texture was fabricated on surface of cemented carbide tool by NC WEDM technology. The effect of WEDM parameters (pulse width, pulse stop and current) on the width of micro-texture was studied, so as to control the size of micro-texture fabricated by WEDM. At the same time, the least square method was used to establish the prediction model between the width of micro-texture and the WEDM parameters. The experimental results showed that the micro-texture size fabricated by WEDM technology was in the micron scale, which met the requirements of micro-texture tool size in the field of cutting. Pulse width, pulse stop and current affected the width of micro-texture, but pulse width was the main factor affecting the width of micro-texture. The prediction model of micro-texture width was successfully established by least square method.
Volumetric error analysis and modelling of CNC internal and external cylindrical grinding machine tool
Authors: Tao Juanjuan , Tao Haohao 
Published: March 2020

Abstract
In order to improve grinding accuracy, it is necessary to analyze and study geometric and thermal errors of NC machine tools. Based on the method of coordinate transformation of multi-body system theory, the error matrix of cutting points is established in workpiece and tool kinematic chains. The coupling relationship between thermal error and geometric error is analyzed, and the comprehensive mathematical model of geometric error and thermal error of CNC internal and external grinder is deduced. The precise machining constraint equation of grinder is established, which lays a theoretical foundation for subsequent error compensation.
A Ship-borne Trajectory Real-time Processing System Based on Service Bus
Authors: Hu Shangcheng , Li Yonggang , Hou Yawei 
Published: March 2020

Abstract
Currently, ship-borne trajectory real-time processing system adopt centrality soft-model, it existed obvious shortcoming, such as strong coupling, weak adaptable and difficult to upgrade. Based on analyzing the real-time processing flow and requirement of the ship-borne trajectory real-time processing, together with the advantage of service bus have been used in other scene, this article designed a soft-model based on service bus. It has the advantage with less coupling and more adaptable. The research results have been directly applied to the maritime tracking and control software, effectively enhance the real-time processing system of task adaptability and maintainability of efficiency and improve the ability to carry out the task.
Determination of Arctiin in Lingqiao Jiedu Tablet by Capillary Electrophoresis
Authors: Han Likun , Zhang Nana , Liu Haixing , Wang Lintong 
Published: March 2020

Abstract
This paper investigated the determination of arctiin content in Lingqiao Jiedu Tablet by high performance capillary electrophoresis (HPCE) method. The borax solution of 37.5 mmol concentration containing 12.5% methanol was chosen as buffer solution. The experiment was performed at a constant voltage of 16 kV and UV detection wavelength of 277 nm. The content of arctiin in Lingqiao Jiedu Tablet was 5.002mg/g (RSD=2.85%) (n=7). The recovery was in the range of 85%-120.7% (n=5). This method is suitable for the detection of the content of arctiin in Lingqiao Jiedu Tablet.
Determination of Arctiin in Lingyang Ganmao tablets by Capillary Electrophoresis
Authors: Liu Haixing , Wang Lintong 
Published: March 2020

Abstract
This paper investigated the determination of arctiin content in Lingyang Ganmao tablets by high performance capillary electrophoresis (HPCE) method. The borax solution of 37.5 mmol concentration containing 12.5% methanol was chosen as buffer solution. The experiment was performed at a constant voltage of 16 kV and UV detection wavelength of 277 nm. The content of arctiin in Lingyang Ganmao tablets was 12.81mg/g (RSD=3.5%) (n=6). The recovery was in the range of 81.3%-113.4% (n=5). This method is suitable for the detection of the content of arctiin in Lingyang Ganmao tablets.