bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of calcination temperatures on ammonia selective catalytic oxidation by Cu/SSZ-13 catalysts
Authors: Guo Jingjing , Li Junhua
Published: August 2019

The Cu/SSZ-13 catalysts prepared by the impregnation method were applied to ammonia selective catalytic oxidation (NH3-SCO). The effect of the calcination temperature on the catalytic performance was inverstigated. The structural and physico-chemical properties of the catalysts were investigated by XRD, N2 adsorption-desorption isotherms, XPS, NH3-TPD and H2-TPR. It is found that the increase of calcination temperature favors the ammonia conversion at low temperatures. Meanwhile, overhigh calcination temperature (>500 °C) would lead to the decrease of catalytic activity. The Cu/SSZ-13-500 catalyst shows the highest catalytic performance and exhibits more than 70% NH3 conversion at 200 °C. The NH3-TPD and H2-TPR results confirmed that Cu/SSZ-13-500 owned more Lewis acid sites and CuO species, which were beneficial for ammonia adsorption and activation.
A new synthesis method of ultrathin Zn-Al layered double hydroxide with super adsorption capacity
Authors: Nie Qing , Ma Jiami , Xie Yafan
Published: August 2019

Layered double hydroxide (LDH) is a kind of stratiform compound with a large specific surface area and strong adsorption capacity, which is widely used in printing and dyeing wastewater treatment. Herein, we synthesized ultrathin Zn-Al LDH (U-Zn-Al LDH) by temperature-assisted intercalation exfoliation strategy using sodium dodecyl benzene sulfonate (SDBS) at 80 ° C. The thickness of the obtained U-Zn-Al LDH was about 4.5 nm and it featured higher specific surface area (49.5 m2/g) as compared to the pristine sample (26.6 m2/g). As a result, U-Zn-Al LDH exhibited higher adsorption activity of methyl orange (MO) dye. Furthermore, the possibly existed defects during the ultrathining process changed the adsorption mode of MO, resulting in a vertical and ordered configuration of MO on U-Zn-Al LDH, which was another reason for its higher adsorption capacity.
Hydrothermal conversion of microalgae into N-containing compounds
Authors: Zhu Yanjie , Yang Yang , Wang Xiaoguang , Jin Fangming , Zhong Heng
Published: August 2019

With the respect to the depletion of fossil fuels, numerous approaches have been developed to mitigate the problem, among which production of chemicals from microalgae is a substantially new way to contribute to the economic viability. In the present study, one new and straightforward method for the conversion of microalgae into nitrogen-containing compounds such as 2-pyrrolidone under hydrothermal conditions was demonstrated. Furthermore, protein in microalgae was proved to be the source of N-containing compounds production.
Transformation and Analysis of High Temperature Thermocouple in Sulfur Recovery Burning Furnace
Authors: Cui Yunlong
Published: August 2019

The furnace temperature of the sulfur-burning furnace of the sulfur recovery unit is an important parameter to ensure the overall Claus reaction, and it is of great significance to accurately evaluate the extent of the reaction. At present, the temperature measurement of sulfur recovery furnace is a recognized technical problem in the industry, mainly affected by high temperature, high temperature H2 S corrosion and thermal shock. Therefore, the material of the thermocouple protection sleeve is difficult to select. Through the analysis of the high temperature thermocouple modification process of the sulfur recovery furnace in the sulfur recovery unit of this department, the paper summarizes the transformation plan to extend the service life of the high temperature thermocouple of the device.
The effect of metakaolin on the hardening process of alkali activated slag by using electrochemical impedance spectroscopy
Authors: Fang Yuan , Li Hongbiao , Wang Zhaohua , Zhang Kunde , Cui Peng , Dong Biqin
Published: August 2019

The purpose of this research work is to study the hardening behavior of the alkali activated slag-metakaolin (AASM) material from a new electrochemical perspective. The measurements of the compressive strength and the electrochemical impedance spectroscopy (EIS) were conducted. The results demonstrated that the strength of AASM paste decreases with the increase of metakaolin content. In addition, a suitable electrochemical equivalent model has been used in order to analyse of the relationship between the microstructure of the AASM paste and the EIS data. And found that the resistance of ion transport process Rct1 show an increasing trend over the testing period and the compressive strength and the Rct1 of AASM has similar growth trend and strong correlation, which means that the EIS may be used to predict the strength development of the AASM paste.
Optimization of Biogas Production from Anaerobic Fermentation of Corn Stalk by Combination Alkali Pretreatment
Authors: Zhao Ling , Chen Kang , Li Jinyang
Published: August 2019

In order to explore the influence of alkali concentration, solid-liquid ratio, pretreatment time and component ratio on biogas production from corn stalk anaerobic fermentation in the pretreatment process of combined alkali, four factors and five levels of quadratic orthogonal rotary combination design experiment were used to optimize the technological conditions for biogas production from corn stalk anaerobic fermentation by combined alkali pretreatment, and corresponding mathematical model is established. The results showed that the regression equation was significant and the fitting condition was good. The four factors affected the biogas production of corn stalk in the order of composition ratio, treatment time, alkali concentration and solid-liquid ratio. The optimum combination of process parameters was as follows: alkali concentration was 6%, solid-liquid ratio was 1:5, treatment time was 4.5 days, component ratio was 1:1.25. Under the optimum conditions, the production of biogas from corn stalk anaerobic fermentation was the highest.
The effect of xenon lamps radiation on artificial football turf
Authors: Zhang Xinming , Luo Chu , Zhang Lihua , Sun Yundong
Published: August 2019

Weather behaviour is the main life cycle factor for football turf. Xenon lamps radiation can closely mimic the natural weather. This work investigated the artificial football turf exposed to xenon lamps, compared with the original turf, fastness and tensile strength were measured. Systematic testing method for synthetic turf were performed, the result showed the colour fastness could be 4, and the tensile strength decreased slowly during the light radiation period for 1000h and 2000h. The results indicate that the football turf wreathing and degradation behaviour is influenced by the xenon lamps radiation.
The dry ashing - AAS method and the microwave digestion -ICP-MS method for determination of lead in plastic packaging bag
Authors: Mi Haipeng , Zhou Xilin , Liang Bo , Su Zhonghua , Huang Qingqing , Liu Di
Published: August 2019

A pink plastic packaging bag sample from a enterprise was preliminarily screened via X-ray fluorescence spectroscopy method (XRF), it was found that the lead content exceeded the limit of relevant national standards. Subsequently, the total lead content in the packaging bag was determined via atomic absorption spectrophotometry pretreated by dry ashing method (DA-AAS) and inductively coupled plasma–mass spectrometry with microwave digestion method (MD-ICP-MS), respectively. The working curve equations were obtained by linear least squares method with the calculated linear correlation coefficients r above 0.9998 and the relative standard deviation (RSD) of the determination results from 1.0% to 6.2%, which was in good agreement with the result of XRF.
Bonding parameter topological index application in lanthanides quantitative structure-activity relationship
Authors: Yang Hanbiao , Yang Lin , Jin Yingying
Published: August 2019

Quantitative structure relationship (QSAR) is an important way to explore chemical properties. This paper mainly studies the element bo nding parameter topo logical index of lanthanides and the linear regression equation of its hydration properties. Based on the predecessors, this paper improves the algorithm of element bo nding parameter topological index. A linear regression equation with a higher correlation coefficient was obtained. It provides a basis for further study of the theoretical characteristics of lanthanides hydration properties.
Research on the Utilization and Development of Bamboo Resources through Problem Analysis and Assessment
Authors: Li Wei , He Shuqiang
Published: August 2019

Bamboo is a very important resource plant that determines the function and health of terrestrial ecosystems, and the safety and well-being of human society. However, current use and consumption of bamboo resources has created some serious problems that will inevitably impede sustainable development of bamboo resources. The present study focuses on four major issues that are closely related to the usage and development of bamboo resources, including overexploitation, low utilization efficiency, the shortage of bamboo raw material, and environmental issues that arise out of the development of bamboo industry. Based on an analysis on such major problems associated with the utilization and development of bamboo resources, several strategies were proposed to help improve the protection and utilization efficiency of bamboo resources, including the collecting and harvesting of bamboo resources following scientific guidelines, the enhancement of the utilization efficiency, especially multiple use of bamboo resources, the maintenance of high production and genetic diversity of bamboo resources, and the realization of an eco-friendly development of bamboo industry.
Screening of Yeast Strains in producing biodiesel
Authors: Zheng Chaocheng
Published: August 2019

Microbial oil production has many advantages such as rapid proliferation of microbial cells and short production cycle. The raw materials needed for growth are abundant and inexpensive such as starch, sugar, especially the waste which can be utilized in food or paper industry. 170 oil-producing strains were screened by Sudan black staining observation using fat grains as screening index, among which, 6 high lipid yield yeast strains were identified by residual sugar as indirect index. By comparing the oil-producing ability of this strain, it was determined that the first strain was a good strain for oil production by fermentation. The biomass, oil content and oil yield of the strain were 11.58 g/L, 36.68%, 4.25 g/L, respectively. Through analysis on 26S rDNA sequence and observation on morphological characteristics, culture characteristics and physiological and biochemical characteristics, this strain belonged to Cryptococcus spp.
Preparation and modification of biomass carbon and research of the adsorption of copper
Authors: Li Xiaohao , Li Yong
Published: August 2019

With the acceleration of industrialization, industrial wastewater discharge makes environmental pollution more serious. How to deal with industrial wastewater has attracted more and more attention. It is a good method to deal with copper in wastewater by using biomass activated carbon. In this study, biomass carbon (AC) was prepared from corn stover as raw material. Preparation of nitrogen-containing biomass carbon (AC-N) using melamine as nitrogen source. Preparation of iron-loaded biomass carbon (AC-Fe) and iron-nitrogen-loaded iron biomass carbon (AC-N-Fe) using AC and AC-N as carriers and ferric nitrate as iron source. Choosing the different concentrations, temperatures, adsorption times to explore the adsorption properties of different carbons on copper ions. The results show that the adsorption performance of modified biomass carbon on copper is much greater than that of the original carbon (AC), and the modification is effective.
Monoethanolamine Electro-Oxidation Assists Efficient Hydrogen Evolution over Nickel Nanowire Arrays Anode
Authors: Sun Haijun , Du Mengmeng , Guo Fen , Gao Shan , Yue Fangyuan , Yang Jifei
Published: August 2019

In order to decrease the decomposition voltage of hydrogen evolution in ordinary alkaline or acidic water and simultaneously degrade the Ethanolamine (MEA) sewage, the efficient hydrogen evolution assisted by MEA electro-oxidation over nickel nanowire arrays anode is investigated in this work. The nickel nanowire arrays anode is successfully fabricated with the aid of the polycarbonate template and the low-melting point alloy. The electrochemical results show the driving voltage to deliver the same current density of 20 mA cm-2 in the 1.0 mol L-1 KOH/0.05 mol L-1 MEA solution is lowered by 12.2% than that in 1.0 mol L-1 KOH solution. The present study proves the viability to produce hydrogen efficiently by electrolyzing the MEA-containg water.
Facile preparation of three-dimensional NiO nanosheets array on carbon sphere and its high-performance nonenzymatic glucose detection
Authors: Hai Bo , Wei Hang
Published: August 2019

An ultrathin NiO nanosheets array loaded on carbon spheres were prepared by coprecipitation method and calcination approach. The as prepared NiO nanosheets contain high surface specific area due to their cross-sectional NiO three-dimensional structure which leads to more susceptible contacting between nanosheets and electrolyte. As the results, the reversible redox reaction should be accelerated. Moreover, NiO nanosheets array@carbon sphere (NiO@C) nanocompounds were mixed with Nafion solution and loaded onto glassy carbon electrodes (GCEs) to form a high performance non-enzymatic electrochemical glucose sensor. Cyclic voltammetric (CV) and Amperometric studies indicated NiO@C nanocompounds demonstrated excellent electrocatalytic activities for glucose detection.
Application Analysis of Zinc Oxide Nanomaterials Based on Economical Reduction in Energy Environment
Authors: Xue Liwei
Published: August 2019

The development of modern industry has not only created tremendous material wealth, but also paid tremendous resources and environmental costs. The problem of energy and environment is one of the main problems facing mankind at present. With the help of the photoelectric properties of ZnO nanomaterials, the applications of ZnO nanomaterials in energy and environment are explored. It is of great significance to the sustainable and coordinated development of energy and environment. Nano-zinc oxide is a kind of widely used nano-materials. Zinc oxide (ZnO), as a direct wide band gap semiconductor, is an environmentally friendly material with high exciton binding energy. New development models and requirements have been continuously upgraded to the level of sustainable development of human society. The structure and preparation of ZnO are briefly introduced in the structure of ZnO nanomaterials. Based on this, the application of ZnO nanomaterials in energy and environment is discussed.
Effects of Different Tillage Practices on Photosynthetic Characteristics of Crops in the Loess Plateau
Authors: Zhang Ruiqing , Hao Mingde
Published: August 2019

This thesis bases on traditional farming and no-till covering different measures as the research object, analyzes on crop photosynthetic physiological indexes, the results are as follows: With the period of growth, leaf net photosynthetic rate of each process has a rising trend from high to low. Tasseling stage has the most obvious the phenomenon. Under the traditional tillage condition, plastic film mulching with the straw mulching has the highest net photosynthetic rate. The straw mulching is the lowest. Under no-till conditions, the highest net photosynthetic rate of plastic film mulching on average is 33.81 (including mol/(m2, s). It is 3.7% higher than no cover. Under different tillage coverage measures condition, the leaf transpiration rate shows that tasseling stage is higher than jointing stage of ratooning buds. Jointing stage of ratooning buds is higher than huge bellbottom period. Huge bellbottom period is higher than seedling. Seedling is higher than mature period. In seedling stage, spring maize stomatal conductance is lower. Tasseling stage to achieve the highest. Under traditional tillage condition, the mulch with straw mulching maintains a higher average stomatal conductance 260.63 parts per million. It is 46.0% higher on average than uncovered; under no-till conditions, plastic film mulching has the highest transpiration rate of, and straw mulching is the lowest.
Effect of Soil Nitrogen for Maize Planting in Different Ratio of Compound Soil
Authors: Lu Yangjie , Li Juan , Guo Zhen
Published: August 2019

The experiment was carried out by planting corn on the compound soil formed by mixing different proportions of soft sandstone and sand. The distribution and migration of nitrate nitrogen and ammonium nitrogen in the compound soil were studied. The results showed that: 1.Soil nitrate nitrogen was easily leached by water, and the greater the proportion of sand in the compound soil, the faster the soil nitrate nitrogen was leached and the depth of the leaching is deeper; 2. The content of ammonium nitrogen in the compound soil was generally low, and the higher the sediment concentration of the compound soil, the greater the change of ammonium nitrogen. Therefore, appropriate measures should be taken in the compound soil with high sediment concentration to reduce the fertility waste caused by nutrient loss.
The impact of ultrasonic power and time for the removal of Total Petroleum Hydrocarbon from low permeability contaminated soils
Authors: Jatnika Effendi Agus , Wulandari Marita
Published: August 2019

Ultrasonic was widely studied in soil or sediment with several types of contaminants, both heavy metals and organic matter. Ultrasonic may enhance the desorption or leaching of contaminants from the soil and play an important role in the formation of radicals (•OH) that involved in the oxidation of hydrocarbon contaminants in the soil. This research has consisted of a tube reactor made from stainless steel in 21 cm × 21 cm × 18 cm of volume. According to previous research, ultrasonic power not only increases the desorption process or leaching contaminants from the soil but also plays an important role in the formation of radicals (•OH) which are oxidizers involved in the oxidation process. The main reactor has a dimension of 21 cm × 21 cm × 18 cm. The system used was a bath system, where the transducer was attached under the bath (reactor) so that it indirectly produces sonication. Contaminated soil has low permeability and obtained from conventional petroleum mining in Grobogan Regency, Central Java. Initial concentrations of TPH was 334100 mg / kg. Based on the optimum time experiment, it can be seen that the TPH removal was significant at the initial 15 minutes of sonication. At optimum conditions, TPH efficiency removal at 160 watts of power, 48 kHz of frequency, 1: 9 (gr/ml) of soil / liquid ratio was 61.03%.
A dynamics condition of coastal environment in Padang City-Indonesia
Authors: Febriandi  , Lanin Dasman , Hermon Dedi , Fatimah Siti , Triyatno  , Putra Aprizon
Published: August 2019

Padang City is located on the West coast of Sumatra Island that borders directly with the Indian Ocean. The coastal region of the city stretches from Pasia Jambak beach, Muara Anai in the Northto Sungai Pisang in the South. The coast of South section is different from the coast of Northsection, because the Southern coastline is heterogeneous because there are many small bay, small islands and narrow beaches directly adjacent to the volcanic hills. This research aims to determine the dynamics condition of a coastal environment based on the characteristic (length, velocity, energy, and height), sediment transport value, accretion/abrasion factor value, and coastal equilibrium in Padang City.The method used in this study is the calculation of wavelength (L0
), wave velocity (C), wave energy (E), run-up height (Hb
), and sediment transport (Q) to determine accretion/abrasion factor and equilibrium (G0
). Furthermore, it is done by Geographic Information System (GIS) approach to spatial information of research location. Research result shows that coastal region(beach)in Padang City tends to experience accretion along the beach of Pasia Sabalah, Panjalinan North, Panjalinan South, Parkit, Purus South, Purus North, Muaro Padang, Air Manis North and Pasia Putih. While the abrasion conditions occur inPasia Jambak, Parupuk Tabing, Bung Hatta University beach, Air Manis South and Sungai Beremas.
Study of coastal abrasion disasters and their causes in Pariaman City
Authors: Haryani  , Irianto Agus , Syah Nurhasan
Published: August 2019

In 2003 until 2016 on the coast of West Sumatra Province there have been disasters of abrasion and accretion in 32 points in 6 Regencies and Cities covering an area of 732.69 Ha of abrasion and accretion of 55.4 Ha. Pariaman City is one of the coastal cities in West Sumatra Province. The purpose of this study is to examine the characteristics of coastal abrasion in the last 15 years (2003 to 2018) in Pariaman City and its causal factors. The analytical method used is the 2003 coastline comparison method with the coastline in 2018. Congratulations on 15 years of observation, there was coastal abrasion in the coastal area of Pariaman City covering an area of 197.65 ha and accretion of 285.38 ha. This proves that coastal abrasion causes a substantial reduction in land in Pariaman City, which is an average of 13.18 ha / year, while land addition is 19.03 ha / year. Physical factors that most influence the abrasion and accretion of coastal Pariaman City are current factors, shoreline shape, coastal typology and vegetation cover while low wave factors are quite influential.
Analysis of JHA and JSA at KIP 16 Bangka Ocean Mining Units PT Timah (Persero) Tbk Bangka Belitung Islands Province
Authors: Rahmahwati Joni Riri , Rusli HAR , Dewata Indang
Published: August 2019

This research discusses about safety and health occupational control in Bangka Ocean KIP Timah 16 Units using some risk management methods. The methods are Job Hazard Analysis (JHA) and Job Safety Analysis (JSA). Purpose of the research is to explain safety and health occupational in KIP Timah 16 Unit it is for get the improvement of productivity work, production, welfare and comfortability workers and achievement of zero accident. The type of the research is descriptive. There are two data had collected. They are primary and secondary data. Primary data get from interview with the employees and secondary data get from K3 documents in the enter company of PT. Timah UPLB and KIP 16. Based on result of research can get some conclusions. First, to use method JHA and JSA for identification and control occupational accident.
The characteristics of fecal disposal system in Penyengat Island, Kepulauan Riau
Authors: Asti Lalasati Novi , Pramono Hadi M
Published: August 2019

Indonesia is the largest archipelagic country in the world, there are thousands of small islands that have to be managed. One of the main managements in small island is related with sanitation issue, especially the fecal (black water). This research is aimed to identify the characteristics of fecal disposal system in a small island and analyse the related factors affecting it. The research was conducted in Penyengat Island, Kepulauan Riau. Descriptive and Inferential Statistics were applied by using SPSS. The characteristics of fecal disposal system is determined by latrine and sewage disposal type. Meanwhile, the related factors included are settlement type, education, income, and ethnicity. The result shows that fecal disposal system of Penyengat is dominated with modern latrine (71.4% Gooseneck Latrine) and conventional sewage disposal (53.5% simple pit sewage). Preferency of fecal disposal type is related with settlement type, ethnicity, and highest education level of household members. Besides, the income level is not related with the fecal disposal type at all. The result of this research is expected as a reference of sanitation programs in small island.
The content of mercury in sediments around Artisanal Small-scale Gold Mining (ASGM) Bumela district, Gorontalo Regency, Gorontalo Province, Indonesia
Authors: Lihawa Fitryane , Mahmud Marike
Published: August 2019

Artisanal Small-scale Gold Mining (ASGM) in Gorontalo spread across several regions. One is located in the village Bumela, District Bilato, Gorontalo regency. The processing of gold at the mine site Bumela do with the amalgamation method. The purpose of this study is to assess the content of mercury in sediments around the ASGM Bumela. Sediment sampling sites in Totopo River, Motebo River and ASGM Bumela tailings. The number of sampling point sediment in the river are 15 points. The number of sampling point sediment in tailings location is 2 points. Sampling was done by varying the depth of 0-20 cm and 20-40 cm. To determine the concentration of mercury in the sediment used Atomic Absorption Spectroscopy (AAS) without a flame in LPPMHP Gorontalo Province. The quality standard levels of mercury in the sediment used European Safety Standard. The average content of mercury in the sediment was 71.36 mg/kg. The average content of mercury in the tailings is 31.95 mg/kg. The content of mercury in Totopo River, Motebo River and the tailings are exceeding the quality standard of European Safety Standard.
Composition of mixing gypsum additives as environmentally friendly material in tropical soil to reduce grounding resistance
Authors: Martin Yul
Published: August 2019

Grounding resistance is directly proportional to the amount of soil type resistance. While soil type resistance is influenced by several things, namely soil structure, temperature, the effect of water content (moisture), and the effect of chemical content in the soil. The purpose of this study was to analyze the decrease in the value of earth resistance by adding additives in the form of gypsum without a mixture of soil and gypsum mixed with soil. The results showed that the value of grounding resistance with the addition of gypsum without soil mixtures had a higher resistance value than grounding resistance without the addition of additives. Grounding resistance with the addition of gypsum mixed with soil on average can reduce the value of grounding resistance by 153.56 ohms with 25% gypsum, 157.2 ohms with 75% gypsum and 169.91 ohms with 50% gypsum.
Microbial degradation of batik waste water treatment in Indonesia
Authors: Muchtasjar Bunyamin , Hadiyanto H , Izzati Munifatul
Published: August 2019

The existence of the batik industry is economically enough to provide a great livelihood for the community. The increasing demand of batik by the community has an impact on the growth of the batik industries in various regions in Indonesia. However, this industrial activity has a negative impact in production of liquid waste disposal. In batik production process, the liquid waste was produced by more than 95% which is emitted from process of soaking, heating and rinsing. Liquid waste has the potential to cause environmental pollution and affect the condition of living organism, including humans. One of efforts to reduce pollutants in batik waste water is by using biodegradation. Biodegradation is usually carried out by a consortium of a number of microbes. The objective of this study was to evaluate the potential of microbes for batik waste water degradation. Samples were taken from water and sludge contaminated batik waste water in the sewerage and river at Banyumas. Isolation and purification using the dilution planting method were conducted, to obtain pure culture using the pour plate technique, and maintenance of bacteria using streak culture. About 8 genus of microbes found in water bodies that have been contaminated by batik waste water are Mesophilobacter, Methylococcus, Agrobaacterium, Neisseria, Xantobacter, Deinococcus, Sporosarcina, and Bacillus. The result showed that BOD degradation in batik waste water by microbial consortium was about 85.71%. Regarding on the result, it can be concluded that bacteria found in the sewerage and river were able to degrade pollutant from batik wastewater.
Hydrograph separation method and baseflow separation using Chapman Method – A case study in Peusangan Watershed
Authors: Ramli Ichwana , Murthada Sayed , Nasution Zulkifli , Achmad Ashfa
Published: August 2019

Base flow is the portion of stream that is not run off and results from seepage of water from the ground into a channel slowly over time. Base flow is considered to be the groundwater contribution to stream flow. Estimates of the amount of base flow can be derived from stream records. This study is about groundwater recharge condition at two sub watersheds in Krueng Peusangan: sub watershed of Lut Tawar and sub watershed of Teupin Mane (Krueng Teumbo). The Krueng Peusangan Watershed is one of priority for watershed management because this watershed is in a critical condition. The Krueng Peusangan Watershed is an important water catchment area in Aceh where there are one million people depend on life from the water source watershed, such as dringking water, agriculture, and fisheries. The Krueng Peusangan includes four regencies, an upstream Aceh Tengah, a midstream area in Bener Meriah and downstream area in Bireuen and Aceh Utara. This research aims to get groundwater recharge using Seasonal Recession Method and Base Flow Separation Method. Both of methods were used to estimate groundwater recharge for each peak in stream flow during the period of record (2008-2012). The results showed that the trend pattern of the stream hydrograph could be explained using the exponential function where the dots lowest discharge that is the end of the recession (y) than any period of time on stream hydrograph semi logarithmic (x). The regression formula for the watershed of Krueng Peusangan is: y=1.3x−0.12(Lut Tawar - Wih Nareh) and y=1.94x−0.42(Teupin Mane-Krueng Teumbo). The filtering method (Base Flow Separation Method) by Chapman (1999) gave a lower percentage of the low flow component (base flow) for Sub Watershed of Teupin Mane (Krueng Teumbo): 2008/2009 (18%), 2009/2010 (3%), 2010/2011 (1%), 2011/2012 (1%). For Sub Watershed of Lut Tawar (Wih Nareh): 2008/2009 (1%), 2009/2010 (1%), 2010/2011 (4%), 2011/2012 (1%). Estimates using the two methods define a reasonable range of the base flow contribution to stream flow in the watershed.
Hazard analysis and social vulnerability to predict the loss population is affected by natural disaster of landslides in the Pesisir Selatan District of West Sumatra
Authors: Triyatno  , Berd Isril , Idris  , Putra Viola
Published: August 2019

Pesisir Selatan District is one of the areas in West Sumatra that often experiences natural disasters of landslides. Natural disasters of landslides that occur in this area often cause losses in the form of property or human lives and disruption of road access to other areas. The aims of this research were to analyze the hazard of landslides based on land characteristics, analyze the carrying capacity of the region based on landslide hazards, analyze social vulnerability, and analyze prediction of Population loss. The method used in this study is a survey method with a geomorphological approach. Data used in the form of primary data and secondary data. The technical analysis used is in the form of scoring to analyze landslide hazards and GIS used to analyze the carrying capacity of the region, vulnerability, and exposed populations. The results showed that the hazard of landslides in the study area was divided into three, namely low, medium, and high hazards. The hazard of low landslides is generally found in plain areas near the coast. This area is formed due to the results of sedimentation processes from both rivers and the sea. The hazard of moderate landslides is generally found in hilly areas, and the hazard of high landslides is generally found in hilly or mountainous areas. The hazard of landslides is caused by physical characteristics in the form of high rainfall, steep slopes to very steep slope, high rock weathering. Social vulnerability in the research area is divided into two parts, namely low and medium. Low social vulnerability is caused by the ratio of male population more than female population, ratio of vulnerable groups, ratio of poor Population, and a ratio of disabled Population. Social vulnerability is being caused by a greater number of female populations, ratios of vulnerable groups, and disabled Population. The prediction of population loss found in the Lakitan Tengah area is in Lengayang Subdistrict, which is 11,869 Population.
Components engaged in the development of school culture in Padang Panjang State High School
Authors: Endrimon Wisma , Rusdinal  , Marsidin Sufyarma , Zaim M
Published: August 2019

Improving the quality of education is not enough by just improving the learning process, but it must also be followed by the process of implanting cultural values to students. One school that has successfully developed a school culture is Padang Panjang State High School 1 (SMAN 1 Padang Panjang). The school has successfully developed cultural main values of religion, mutual respect, discipline, and willingness to excel. This type of research is qualitative research. This research was conducted at SMAN 1 Padang Panjang. The informants of this study were the Principal, the teacher assembly, employees, students, and other informants outside the school. Data collection was done through interviews, observations, and documents analysis. Data analysis techniques are done by data reduction, data presentation, conclusion drawing/verification. The study found that the components involved in the development of the school culture in SMAN 1 Padang Panjang covered internal components, including the Principal, teacher assemblies, employees, imtaq (faith and piety) mentors/coaches, and students, as well as external components, including Padang Panjang Mayor, DPRD (Regional House of Assembly), Education Office and School Committee.
Build management strategies & maintenance Silokek Village potential based on local wisdom
Authors: Satria Haris , Heldi  , Endrizal  , Prayitno Budi
Published: August 2019

Silokek village is rich in potential who are at Sijunjung Regency, West Sumatra Province. This area, known as the MUSIDUGA (Muaro Silokek & Durian Gadang), has the natural resources in the form of the river which flows between steep limestone hills and beautiful, so that the area proposed to become one of geopark. Problems are found namely the limitations of the community in the management of potential of Natural Resources Company Silokek Village. Yet its optimal strength/ability society (hope/the local wisdom, yet high in the management of community spirit). In this research, the author discusses about how to build a strategy management and maintenance potential of silokek village – based on local wisdom. As for the method does is SWOT, internally and externally. On strategic Management, divided into: Actuating (A), Planning (P), Organization (O), Controling (C). At the end of the study, obtained by the method of development potential Silokek Village based on local wisdom with the concept of sustainable development (Ecologic, Social Culture & Economic) with goals “sustainability” through improved skills human resources and Maintenance Management Strategic (MMS).
Socio-economic characteristics of farmers on the existence of floating-rice cultivation demonstration plots in flood prone area in Bojonegoro, East Java
Authors: Irianto H , Mujiyo  , Qonita A , Riptanti E W
Published: August 2019

Some parts of Bojonegoro Regency along the Bengawan Solo River experience flooding every year due to its downstream area. This leads to a drowning in the rice field areas for several months in the rainy season. As the consequence, the rice fields cannot function well in the agricultural cultivation process. One of the ways to adapt to this condition is cultivating floating rice. However, the further research on the social economic characteristics of the farmers in their accordance to the technological advancement needs to be conducted. This article aims to study the social economic characteristics of the farmers on the existence of the demonstration plots of floating rice cultivation. The method used in this research includes the demonstration plots and farmers survey. The surveyed respondents were 200 farmers living 3 km away from the demonstration plots. The findings show that the characteristics in which respondent farmers are dominated by unproductive ages, low education, low income, limited land tenure, and the lack of information shall be the obstacles in developing floating rice cultivation. This is due to the relatively high operational cost for making floating medium and caring plants different from others. The farmers’ mindset tendency to give up to the natural condition is difficult to change when adapting to flood conditions.
Analysis of land use change using Landsat image from 2006 - 2016 in Solok Regency
Authors: Dasrizal  , Barlian E , Farida  , Rezki A , Ulnie A Z P , Syafruddin Y S
Published: August 2019

Land use change is an important issue in the regional planning and development. This research uses a remote sensing approach of Landsat images and Geographic Information System (GIS) analysis to detect land use change in Solok Regency by time series of 2006, 2011, and 2016. Land use changes were interpreted through Landsat TM satellite images of 2006 and 2011 and Landsat 8 OLI 2016. GIS is used in analysing land use classifications. Land use classification found in Solok Regency is classified into 9 classes which dominated by primary and secondary forests followed by rice fields, mixed gardens, crop field, water bodies, settlement, shrubs and plantations. Based on the results of research, there is a continue increasing of agricultural and settlement expansion. There also expansion of mixed garden against secondary forests, and then there is a significant expansion of settlement land against the rice field. These results indicate that there has been a change of land conversion from non-cultivation to cultivation, and the development of residential areas.
The role of agriculture, forestry and fishery sector in the development of Malinau District (location quotient and shift share approach)
Authors: Kartikawati D , Darsono  , Sundari M T
Published: August 2019

This study aims to reveal the role, the role changes in the future, and the causative factors of these changes in the sector and each subsector of Agriculture, Forestry and Fishery in Malinau District. The basic method of this study was descriptive method. The analytical tool used were Location Quotient (LQ), Dynamic Location Quotient (DLQ) and Shift Share. This study was located in Malinau District, North Kalimantan Province. The types of data used were secondary data in the form of Gross Regional Domestic Product (GRDP) on the basis of constant prices in 2010 of Malinau and North Kalimantanin 2012-2016. The results shows that the Agriculture, Forestry and Fishery sector in Malinau District isa non-basis sector with an average LQ <1 of 0.76. The basis subsector in Malinau District is the Forestry and Logging subsector with an LQ> 1 value of 136, 269.17. Based on a combined analysis of LQ and DLQ, the sectors of Agriculture, Forestry and Fishery have not undergone a role change where the sector remains a non-basis sector at present and in the future. While the subsectors of Agriculture, Animal Husbandry, Agricultural Services and Hunting and the Fisherybecome the basis subsector and the Forestry and Loggingsubsector becomes the non-basis subsector in the future.
The relationship between organization’s structure, leader behavior and personality with citizenship behavior on managing environment
Authors: Lusianil Rina , Putrawan Made , Achmad Rukaesih
Published: August 2019

This research is aim at determining relationship between organization’s structure, leader behavior and personality with citizenship behavior on managing the environment at Cilegon, Banten Industrial Park. The method used was survey with a correlational study by involving 150 sample. There were four instruments which measured citizenship behavior on managing the environment (rel. 0.94), organization’s structure (rel. 0.93), leader behavior (rel. 0.93), and personality (rel. 0.97). Data has been analyzed by two-way ANOVA. Research results revealed that there is positive and significant correlation among those variables, even though it has been controlled by second-order correlation, it is still significant among them. Therefore, it could be concluded that if citizenship behavior on managing the environment would be improved, then organization’s structure, leader behavior and personality should be taken into consideration
UNP Extinct Metric for Bilih Fish (Mystacoleucus padangensis Bleeker)
Authors: Razak Abdul , Ganefri  , Barlian Eri , Dewata Indang
Published: August 2019

This paper write about UNP Extinc Metric. It is new approach and methods how to calculate extinc condition for wild animals especially bilih fish from Lake Singkarak. We introduce new criteria and ombine to seven categories from IUCN. For bilih fish we can calculate number extinc 49 and the meaning is endangered We conclude after that result we can conserve bilih fsh soon as soon for our life in biosfer.
Policy implementation evaluation about quality management and pollution control of water in Regency of Bekasi
Authors: Saefudin Arief , Nadiroh  , Achmad Rukaesih
Published: August 2019

This study aims to determine the implementation of public policy about Water Quality Management and Water Pollution Control in the Regency of Bekasi of Indonesia in order to minimize water pollution. Based on previous research can be synthesized that: Pollution of river water occurs caused by the disposal of waste containing organic or inorganic substances to water sources that cause various diseases and silting the river and have an impact on the environment. The method used in this Policy Research is content analysis. Data of the research results in the analysis by using Merilee S. Grindle model. The results show from of policy content : Objectives of policy that has not adhered. Context of implementation: Inter-institutional coordination in the realization of policy has not gone well. Implementation strategy used: Maximizing policy support from Ministry of Environment, Overcoming the lack of human resources in the field of environment, Maximizing infrastructure and financial facilities.
Study on plasma arc welding technology and properties of metal materials
Authors: Liu Yan , Liu Jiapeng , Ye Haiqing , Yao Yu
Published: August 2019

Plasma arc welding (PAW) has developed rapidly in recent years due to its characteristic of high quality, high efficiency and low cost. It has become the main welding method of metal aluminium and steel in manufacturing industry. This paper introduces the principle of plasma arc welding and summarizes the application of plasma arc welding technology in metal aluminium and aluminium matrix composites and high strength steel. The programmed automatic plasma arc welding technology can improve the welding efficiency and quality at the same time. So the Programmed automatic plasma arc welding technology can be used as the development direction of plasma arc welding technology, and is more widely used in manufacturing industry.
Experimental Research on the Stability behavior of Composite Curved Stiffened Fuselage Panel under Four-Point-Bending load
Authors: Hao C , Nan C Y , Bo Y Z , Lei L
Published: August 2019

In the design of fuselage structure, not only the longitudinal stability should be considered, but also the circumferential stability of fuselage structure is important because of its circumferential bearing of bending moment, shear force and axial force, as well as considering crash conditions. In this paper, the circumferential stability test researches of the fuselage structure were performed on the single-frame curved panel test specimens. The buckling and post-buckling characteristics of the single-frame curved panel under the negative bending condition were examined by four-point bending loading method. At the same time, the buckling mode, failure process and damage mechanism of single-frame curved panel were analysed through the load-strain curves of the skin and the different degree of damage of the three test specimens. The experimental results show that the buckling of skin is an important factor causing the debonding between the cap-stringers and the skin. The expansion of the debonding area greatly reduces the bearing capacity of the curved stiffened panel structure, which eventually leads to the breakage of the frame.
Ground State Properties of Z=119 Isotopes in Relativistic Mean Field Theory
Authors: Yang Haitao , Zhao Zhongxia , Bian Yiduo , Li Xiaopan , Du Guofang , Cai Yan , Zhang Yao , Yu Gongming
Published: August 2019

The properties of Z=119 isotopes in ground state are studied by relativistic mean field (RMF) theory with the force TM1. Based on the conventional Bardeen-Cooper-Schrieffer (BCS) approximation, which is used to study the pairing correlation, the unpaired odd nucleons are studied in the “blocking” method. The properties of average binding energies, the quadrupole deformation, occupation number Noccu
, isotope shifts and the density distributions of neutron and proton for Z=119 isotopes are calculated and compared with the finite-range droplet model (FRDM).
Effect of Trace Ca on the Corrosion Resistance of ZA124 Magnesium Alloy
Authors: Bai Zhiling , Qin Bingke
Published: August 2019

The effect of trace Ca addition on corrosion resistance of ZA124 magnesium alloy was studied. The results showed that the effect of adding 0.3% Ca on the refinement of the microstructure of the alloy was obvious, in which the reticular transformation was fine and intermittent or strip-like, and no new phase was formed. With the addition of Ca, the corrosion rate and current density of the alloy in 3.5% NaCl solution decreased, which improved the corrosion resistance of the alloy. When the calcium content was 0.3%, the alloy had the best corrosion resistance.
Research on performance of vanadium redox flow battery stack
Authors: Yang Yang , Lia Aikui , Ma Jun , Liu Na , Wang Qian , Du Tao
Published: August 2019

The vanadium redox flow battery is a power storage technology suitable for large-scale energy storage. The stack is the core component of the vanadium redox flow battery, and its performance directly determines the battery performance. The paper explored the engineering application route of the vanadium redox flow battery and the way to improve its energy efficiency, and studied high-power vanadium redox flow battery stack. 10 single cells, half-stack and full stack were assembled and tested for constant current and constant power charge and discharge respectively. The results showed that bipolar plate’s conductive filler was increased, besides, reasonable control of the thickness of the graphite felt could reduce the contact resistance between the materials inside the stack. The internal seal was added in the liquid flow frame to reduce the electrolyte permeability and improve the coulombic efficiency; Increasing the exchange capacity of the ion exchange membrane enhanced the choice of permeability and conductivity. All of the above factors could improve the energy efficiency of the battery. The energy efficiency of the 25kW stack could reach 78.6%, and the 31.5kW stack could reach 76.7%.
Role of Nanolubricants Formulated in Improving Vehicle Engines Performance
Authors: Ahmed Ali Mohamed Kamal , Xianjun Hou , Abdelkareem Mohamed A. A. , Elsheikh Ammar H.
Published: August 2019

Transportation sector is a primary consumer of different energy resources, especially in vehicles. Accordingly, industrial society needs novel affordable strategies, accessible and sustainable for fuel economy and reducing the exhaust emissions from combustion engines. The wear and friction are a principal reason for energy dissipation owing to the frictional losses that reach 17-19% of the engine output power. Improving the tribological properties and engines performance is a straightforward approach for saving energy and decreasing emissions using nanomaterials as eco-friendly based nanolubricants to replace the environmentally harmful additives of the traditional commercial engine oils. This study summarizes the recent advances in the area of nanolubricant additives and engine performance lubricated by nanolubricants additives.