bluuebunny/crossref_metadata_2025_split huggingface dataset:
Starch Based Adhesives Made From Durian Seed Through Dextrinization
Authors: Nuryawan A , Ridwansyah  , Mulya Alamsyah E , Widyorini R 
Published: June 2020

Abstract
In order to utilize durian seeds waste, production of wood adhesive made from them was carried out. Method of dextrinization was applied and characterizations of the adhesive’s properties were evaluated, namely specific gravity, viscosity, gel time, pH, clarity, color, and microscopic description including the particle’s size of the adhesives. The properties were compared to other starch based adhesives, such as sago and tapioca. For further utilization as wood adhesive, application for particleboard binder was investigated. Parameter of internal bonding of the board then was evaluated. Result of this work showed fundamental properties of dextrin adhesive made of durian seed were similar with sago and tapioca’s dextrin excluding the colour. Values of internal bonding of particleboard were varied that indicated many factors affected the quality of particleboard for instance the distribution of the adhesive.
Contribution of Non-Timber Forest Product (NTFP) To Households Income In South Tapanuli Regency Indonesia
Authors: Latifah S , Lubis N A , Fachrudin K A , Purwoko A 
Published: June 2020

Abstract
Non-timber forest product (NTFPs) that provide species are a substantial component of the agroforestry system in southern Tapanuli and contribute to local livelihoods. The aim of our study was to measure the annual economic contribution of NTFPs to local livelihoods. NTFPs such as Theobroma cacao L. Areca catechu, Archidendron pauciflorum, Aleurites moluccana (candlenut), Hevea braziliensis, Arenga pinnata, Cinnamomum sp are mostly collected from natural habit.The study site has contribution value for the utilization of non-timber forest products is 53.04% and provided a moderate increase in income to the people of Marancar Godang Village. The total contribution of NTFPs to annual household income was 2,441,416,000.00 IDR/year/households.
Entrepreneurship factor’s affecting the youth decision to continue their family farm
Authors: Ayu S F , Nauly M 
Published: June 2020

Abstract
The entrepreneurial spirit that gives birth to an interest in entrepreneurship is very important to be recognized. In-depth analysis of the characteristics of entrepreneurs will make it easier to find the teaching patterns needed to give birth to young entrepreneurs who continue farming. Thus, this study wants to analyze the factors of entrepreneurship that affect the interests of the children of farmers who are studying in agricultural colleges to continue farming owned by their parents. This study is a survey study using quantitative data. The location of the study was conducted in Indonesia. The study sample is expected to reach 200 respondents. Data analysis uses logistic regression. The risk taking, organizing, leading and hard work variables significantly influence the decision to engage in or not interested in continuing farming. The other three variables are exploiting opportunity, patient and influencing other found not to significantly influence the decision to be interested or not in continuing farming.
Stand structure and carbon storage of Bukit Lawang’s tropical rain forest of Gunung Leuser National Park
Authors: Onrizal O , Auliah N L 
Published: June 2020

Abstract
Deforestation and forest degradation are the main contributors to climate change. Changes in the structure and composition of forests affect the value of biomass and carbon storages. Bukit Lawang’s tropical rainforest of Gunung Leuser National Park which has great potential is not only a habitat for key species, namely the Sumatran orangutan (Pongo abelii) but also has other biodiversity values. This study aimed to determine the vegetation structure and to estimate the value of standing carbon storage of the forest. The vegetation structure was analyzed by the line transect method and the estimation of biomass and carbon storage values was carried out using an allometric model. Distribution of diameter classes is dominated by trees in the 30-50 cm diameter class, with B strata dominated by Aglaia tomentosa tree species. The value of standing biomass is 523.2-562.2 t/ha, carbon storage is 261.6-281.1 t C/ha and the amount of CO2 gas absorbed is 960.0-1,031.6 t CO2/ha. The results indicate that it is necessary to do better forest management ecosystems in Bukit Lawang to improve and maintain the ecological and economic functions of these ecosystems in order to support the implementation of REDD + in efforts to mitigate climate change in Indonesia.
Analysis Skin Temperature Distribution of Thermal Manikin
Authors: Huda L N , Indra  , Sentosa W , Willyanto  
Published: June 2020

Abstract
Thermal Manikin is a human model designed for research and development in outdoor and indoor, military, and clothing environmental experiments. This research aimed to analyze the skin temperature distribution from Thermal Manikin. This study used Thermal Manikin which functions as a representative of the human body where the surface temperature of the body Thermal Manikin is made close to the surface temperature of the human body. The temperature of the Manikin Thermal skin was made constant at 34°C ± 1°C under stable room temperature conditions. Experiment was carried out with various air temperature conditions from 26°C to 32°C. Skin temperature measurements carried out on 24 body parts of Thermal Manikin for 90 minutes at 1-minute intervals. The measurement results obtained was then compared and analyzed at various air temperature conditions. The results of the analysis showed that the temperature of the skin in each part of the body’s thermal Manikin was evenly distributed in each part of the body and the temperature of the body’s skin thermal Manikin increases with the increasing air temperature around thermal Manikin.
Sandy Debris Flow Sedimentary Characteristics and Patterns in the Meishan Formation of Northern Lingshui Sag, Qiongdongnan Basin
Authors: Li Anqi , Yang Xibing , Fan Caiwei , Ye Qi , Wang Zhenzhen , Li Ming 
Published: June 2020

Abstract
Based on drilling core descriptions and micro sedimentary features, combined with regional paleogeographic features, imaging logging and 3D seismic attribute analysis, the sedimentary characteristics and representative identification mark of sand debris flow sandstone in Meishan formation of northern Lingshui Sag, Qiongdongnan basin are discussed in detail, and the sand debris flow sedimentary pattern in the study area is established. Meishan formation sandy debris flow sandstone in the study area is mainly consist of 2 lithological associations, thick massive siltstone to very fine sandstone without sedimentary structure on the upper part and silty mudstone, mudstone and siltstone interbeds with abundant contemporaneous deformation structure on the lower part, and the “mud-encased sand” structure in massive sandstone can be used as an important symbolic evidence to identify the sand debris flow deposits. The distribution of sandy debris flow sandstone is controlled by shelf slope break, and the area with relatively gentle, constructive slope, where the slope break line is characterized by “bulge” form to the sea, is the most favorable area for the development of sandy debris flow sandstone reservoirs.
Analysis of Pollutant Emission Characteristics of Marine Diesel Engine Using Chemical Kinetics under the Background of Energy Shortage
Authors: Sun Changfei , Hui Jie 
Published: June 2020

Abstract
The study aims to reduce the environmental pollutants produced in the ship transportation in the environment of energy shortage, and realize the comprehensive development of energy saving and emission reduction. Based on the theoretical basis of chemical kinetics, a new type of NOx emission generation model of marine diesel engine was proposed according to the traditional HB model. Second, the combustion chemical kinetics of sulfide was described, on which the sulfide generation and emission model of marine diesel engine was proposed. Third, the characteristics of NO, N2O and SO2 were analyzed according to the emission model of NOx and sulfide generation in marine diesel engine. The results showed that when the crankshaft angle was 230° and 250°CA, the content of NO and N2O in the exhaust pipe of diesel engine had an obvious peak. The content of NO and N2O in the cylinder and exhaust pipe of diesel engine increased at the beginning. As the crankshaft angle increased, the content of both decreased gradually, and the trend of change in the cylinder was slower than that in the exhaust pipe. The SO2 content in the diesel cylinder kept stable after a small increase until it disappeared. The SO2 content in the exhaust pipe first increased and then decreased. When the crankshaft angle was 230°CA, the SO2 content in the exhaust pipe of the diesel engine had an obvious peak. The emission characteristics of nitrogen oxide and sulfide were consistent with the correct change trend, which conformed to the theoretical mechanism. In a word, the study provides a practical basis for energy conservation and emission reduction, development of low-carbon economy, and efficient use of energy.
Exploring solutions to assist finger rehabilitation with flexibility
Authors: He Jihe 
Published: June 2020

Abstract
Motivated by the need to help those people whose hands and fingers are incapacitated due to injuries or birth defects, the curved-type pneumatic artificial rubber muscle is discussed in this paper, which is shown to be more flexible and convient than traditional motor-driven soft robotic devices for hand rehabilitation and assistance if designed correctly. When people are injured, their finger joints become stiff and not be able to fully flex. Thus, an assisting device is needed. Machine-based hand exoskeleton for rehabilitation uses hardware and hard components, which carries the risk of furthering the injuries when the exoskeleton breaks or exceeds its driving capacity. In comparison, air-pneumatics driven hand rehabilitation device composed of flexible air muscle not only curves smoother, but also weighs lighter and can be designed as a carry-on, providing safety, utility, and comfortability. Several experiments and researches were run to determine the best structure and air-pressure to suit such purposes. Instead of the traditional button-pressing panel, Neuron-Muscular Transmission (NMT) - a detectable chemical signal - is used to activate the inflation and deflation of the device, therefore making the device thought-driven. In the end, Flexible Pneumatic System (FPS) is created to improve hand rehabilitation and supportive exoskeleton devices.
Cycle Life Prediction of Lithium Batteries Based on Generalized Regression Network with Improved PSO
Authors: Xiao Yao , Wu Mengqiang , Xu Ziqiang , Li Yuanxun 
Published: June 2020

Abstract
To predict the cycle life of lithium-ion batteries more accurately, an improved PSO algorithm and a generalized regression neural network (GRNN) combined with the cycle life prediction method of lithium ion battery are proposed. Based on the simulation and actual prediction data, the results show that the established model has higher prediction accuracy than GRNN, which is of great significance for solving the life prediction accuracy of lithium iron phosphate battery.
Green Development Evaluation System of Tuojiang River Basin
Authors: Xian Jin , Feng Yuan , Li Lin , Li Yulian , Wen Xiaoyuan , Zhou Ying 
Published: June 2020

Abstract
This paper analyzes the green development level of five key cities in the Tuojiang River Basin, which are Zigong, Luzhou, Deyang, Neijiang and Ziyang. Through relevant literature analysis method and data query method, the green development evaluation system indicators are integrated with the economic-social-natural-resource system. On this basis, we choose a variety of representative indicators for comparison, and sum up the green development indicator system which is suitable for the Tuojiang River Basin. The evaluation model is established by the method of grey correlation analysis, and the model is applied to the analysis of correlation degree. Finally, based on the calculation results, the paper put forward opinions and suggestions for the green development of the Tuojiang River Basin.
Studies on Catalyst Activity Based on Organic Wastewater Treaded by Homogeneous CWAO Method
Authors: Zhang Yongxun 
Published: June 2020

Abstract
High concentration organic waste-water was treated with nine homogeneous catalysts, such as Cu(NO3)2, CuSO4, Fe(NO3)3, using the pH and decolorization rate of the treated effluent as the evaluation index. The results show that the order of catalytic effect from high to low is as follows: Cu(NO3)2> CuSO4> Fe(NO3)3> Fe2(SO4)3> Co(NO3)2> Cr(NO3)3> Ni(NO3)2> AgNO3> Zr(NO3)4. The most effective Cu(NO3)2·3H2O catalyst, the absorbance of the treated waste-water decreased from 2.465 to 0.283, and the decolorization rate reached 88.5%, which was 28.1% higher than that of the water sample without the catalyst under the same operating conditions. The pH of the treated effluent was also similarly lower than that of other homogeneous catalysts.
Guilin Tourism Image Perception Based on Web Text Analysis
Authors: Zhou Man , Jia Huiying , Yan Zhen 
Published: June 2020

Abstract
Under the background of Guilin Municipal Government’s proposal to build international tourism by 2020, this paper studies Guilin’s tourism destination perception image, and puts forward the development direction of Guilin’s tourism image in the future. In this paper, Octopus is used to customize the text review data from some popular tourism websites. A total of 14094 valid text review data are collected. Firstly, the data collected from Guilin tourism texts are pre-processed to remove duplication, word segmentation, stop words and invalid symbols. Subsequently, we use R to do word frequency statistics, draw word clouds, construct a three-tier Bayesian probability model, and use ROSTCM6 text review data to analyse emotional orientation. The results show that 78% of the tourists hold a positive attitude towards Guilin tourism. The factors affecting tourists experience are mainly divided into four aspects: natural scenery, tourism service, characteristic tourism products and commercialization degree, among which natural scenery is the most important factor. In the last, we put forward corresponding countermeasures from four aspects: increasing the propaganda of scenic spots, intensifying the development of tourism characteristic products, improving the quality of tourism service and strengthening the construction of commercial streets.
Research on Dynamic Characteristics of River Pollution Degradation Coefficient in the Main Stream of Weihe River
Authors: Zhang Haiou 
Published: June 2020

Abstract
In order to reveal the influence of different hydrological conditions and dynamic changes of pollution sources on the degradation coefficient of pollutants, this study took the main stream section of the Weihe River as the research object to analyze and study the dynamic characteristics of the degradation coefficient of pollutants in the river. Taking the dry year as the representative hydrological year, according to the measured data of each section of the Weihe River, the parameter estimation method based on Matlab regression analysis was used to calculate the comprehensive degradation coefficients of CODcr and NH3-N under different hydrological conditions in each section. The simulation verifies and verifies the calculation results. The results show that different comprehensive degradation coefficients of pollutants under different hydrological conditions are more in line with the actual situation of river pollutant degradation.
Analysis and Prevention of Urban River Pollution
Authors: Wang Yibo , Liu Yingxin , Huang Jinming , Wu Tongtong , Huang Jieyun 
Published: June 2020

Abstract
According to the principle of “nearby discharge” of waste-water treatment, with the progress of industry, the amount of pollutants discharged into urban rivers keeps increasing. Under the requirements of limited river pollution and environmental carrying capacity, the pollution situation of urban rivers needs to be explored and the ways of pollution control need to be explored. At present, most of China’s rivers are polluted, and none of the seven major river systems has been spared. The pollution sources of urban rivers include industrial pollution sources, domestic pollution sources, agricultural pollution sources, oil tankers and other pollution sources. The pollutants in urban rivers include organic pollutants, inorganic pollutants, plant nutrients and heavy metals in water. Pollution prevention and control measures of urban rivers: pollution source control, adhere to the income reduction; physical method, chemical method, biology - ecological method. In a water basin of Guangdong province as an example, some indexes because of pollution in urban river “surface water environment quality standard GB 3838-2002” V class level, basic use as mentioned in the measures for prevention and control of pollution of rivers.
The Classification and Characteristics of Black Holes
Authors: Hu Jingfu 
Published: June 2020

Abstract
Scientists have obtained the first image of a black hole, using Event Horizon Telescope observations of the center of the galaxy M87. The image shows a bright ring formed as light bends in the intense gravity around a black hole that is 6.5 billion times more massive than the Sun. It is consistent with what General Relativity predicts. One of the famous predictions of general relativity is that of black holes. With the birth of the first image of a black hole, this article will discuss the classification of blackholes.
Research on Noise of Tractor Cab Based on FE-SEA Method
Authors: Cheng Kexiang , Ma Xintan 
Published: June 2020

Abstract
The mid-frequency noise in a tractor cab is predicted, the FE-SEA hybrid model of tractor cab is established, the cab structure modal density, internal loss factor and coupling loss factor are obtained by theoretical calculation and test method, and the finite element-statistical energy analysis is simulated after loading vibration and noise excitation. Comparing the cab acoustic pressure level obtained by the simulation with the measured data, the analysis and comparison show that the result of the model using FE-SEA hybrid method in the mid-band is highly fitting with the test value, and the prediction absolute error is less than 2dB, which can be used for further analysis.
Research on New Technology of Energy Conservation and Emission Reduction Based on Environmentally Sustainable Buildings
Authors: Gao Yannan 
Published: June 2020

Abstract
With the continuous development of the economy, the world’s attention to environmental sustainability has risen to a new level. During the construction process, especially in the application of energy-saving and emission-reduction technologies, many key technologies for environmental protection must be combined. Organically integrate energy saving and emission reduction with environmental sustainability. All building technology emission reduction technologies must meet environmental protection standards, such as using corresponding technologies to control indoor air pollution from various building decorations, and give corresponding control and treatment. These key technologies require research today. The effectiveness and environmental sustainability of these energy saving and emission reduction technologies are the key research areas of this paper.
Application of river sediments to soil improvement in urban green space
Authors: Niu Yan , Guo Chao 
Published: June 2020

Abstract
At present, there are two main problems in urban green space soils. One is the change of soil properties due to human treading. The other is the invasion of guest soil and solid waste, which leads to poor soil physical status and fertility. A large amount of dredged sediment is generated every year in urban rivers, and if it is not handled properly, it will cause secondary pollution. Since the dredged sediment contains nutrients such as N and P required by plants, the dredged sediment can be applied to the problem of soil improvement in urban green space to achieve an ecological disposal effect.
Development of VCHs Transfer Mechanism and Remediation Technology in Contaminated Sites
Authors: Wei Yulu , Chen Zhiwen 
Published: June 2020

Abstract
In recent years, with the adjustment of China’s economic structure and the acceleration of urbanization, a large number of heavily polluting enterprises are facing shutdown and relocation, the residual volatile chlorinated hydrocarbons (VCHs) in the site become the priority pollutants in soil and groundwater due to the great threat to human body and environment. How to accurately predict the occurrence state and pollution degree of VCHs in the polluted site and put forward reasonable and targeted effective prevention and control strategy has become an international problem to be solved. The remediation technology of volatile chlorinated hydrocarbons (VCHs) in contaminated sites is introduced systematically, which will provide scientific basis for the practical remediation of contaminated sites in the future.
Measurement and Spatio-temporal evolution of China’s Regional Eco-efficiency
Authors: Li Jian , Zhang Yanran 
Published: June 2020

Abstract
Based on panel data from 2008 to 2017, the Super-SBM model that considers undesired output has been to measure the eco-efficiency of 30 provinces in China. Meanwhile, the spatial autocorrelation analysis is incorporated into the spatiotemporal evolution law in order to calculate the global and local Moran’s I index, and combining the Moran scatter plot to explore the spatiotemporal evolution and agglomeration characteristics of regional eco-efficiency. The results show that the overall level of China’s eco-efficiency has improved, but the regional differences are obvious, shows a gradient descending pattern of “East, Northeast, Middle and West”. The regions with familiar eco-efficiency level showed the volatility clustering phenomenon, and that the regions and their neighbors have potentially similar trends. Eco-efficiency in China was improved followed by the improvement of local polarization situation and regional differences have narrowed.
Research on the Status Quo of China’s Shipping Economy Development and Enterprise Transformation Strategy
Authors: Wang Yiqi , Song Shuxian 
Published: June 2020

Abstract
With the decline of the world economy, the world shipping market is facing a series of crises such as the reduction of supply, and these crises are also the dilemma faced by Chinese shipping companies. Through the analysis of the important index BDI of the international shipping market, this paper realizes the trend of the international shipping market since the crisis of financial integration, and based on this, forecasts the international shipping market. At the same time, we analyze the important index of China’s shipping industry, China’s coastal bulk freight index (CCBFI) and China’s export container freight index (CCFI), which gives us a clearer understanding of the domestic and international shipping market situation. The business model is already suitable for the current shipping market and has reached the edge of change. Finally, based on market analysis, this paper analyzes the advantages and disadvantages of China’s shipping companies, and puts forward targeted development and transformation opinions on the disadvantages.