bluuebunny/crossref_metadata_2025_split huggingface dataset:
Carbon stock estimation of seagrass species thalassia hempricii using planet imagery with band ratio transformation in nirwana beach, padang city
Authors: Isnaen Zulfikri , Pratama Abimanyu Putra , Utami Adriati Annisa , Prananda Aldo Restu Agi , Purnama Andes Dias , Zhafarina Zhafirah , Wicaksono Pramaditya 
Published: August 2019

Abstract
Coastal ecosystems such as seagrass beds can store large amounts of carbon over a relatively long period of time, so a special study is needed for the seagrass ecosystem. Nirwana Beach located in Padang City presents an overview of extensive seagrass ecosystem. The carbon stock is estimated by utilizing Planet imagery with spatial resolution 3m with band ratio transformation method. Band ratio used are band ratio Green / Blue, Green / Red, and Blue / Red. Data processing is done based on correlation analysis and regression analysis between band ratio pixel value on image with value of carbon stock in field. The results show that band ratio of Green / Red has the highest r2 indicating a strong correlation relationship. The carbon stock in Nirwana Beach with total carbon 3,776,42 gC / m2 or or 3,78 kgC / m2. Accuracy test is done with standard estimate error where the highest accuracy value is obtained through the Green / Red band ratio with accuracy percent 59.98%. This research shows that the carbon stock estimation in Nirwana Beach is underestimate.
Adhesion and heat build-up of rubber for energy-saved tyre
Authors: Suethao S , Smitthipong W 
Published: August 2019

Abstract
The objective of this study was to investigate the effect of crosslinking systems (conventional and efficient systems) on the contact mechanics and heat build-up of natural rubber (NR) tyre mimicking samples. The JKR (Johnson, Kendall and Roberts) experiment has been established to measure the contact mechanics in NR samples at different vulcanization systems. Work of adhesion obtained from JKR model is in good agreement with that calculated from contact angle measurement. From the contact mechanics point of view, the adsorption of the rubber to the glass slide surface plays a major role in the strain energy release rate. Higher rubber free chain samples (unvulcanized rubber) represent higher adhesion hysteresis and higher heat build-up compared to vulcanized rubbers whichever was the vulcanization system. Finally, rubber sample obtained using efficient vulcanization has the lowest adhesion hysteresis and heat build-up. These results suggest that the rubber with efficient vulcanization is preferable for the application of energy-saving tyres.
Research to Develop International Standards for Rubber Household Glove and Rubber Thread
Authors: Wirasate S , Pinprayoon O , Sunintaboon P , Nimsuwan C 
Published: August 2019

Abstract
The international standards for rubber household glove and rubber thread were firstly initiated as New Work Item Proposal (NWIP) standard drafts. In order to obtain the ISO international standard, several levels of the standard drafts (NWIP, CD, DIS and FDIS) have to be achieved accordingly. To develop the standard drafts, the existing national standards ((TIS 2476-2552 for rubber household glove specification and TIS 2556-2554 for rubber thread specification) and information gathering from the meetings among the involved parties, e.g., producers, users and academic experts, visiting the companies, and product sampling test results were analyzed and standard drafts were prepared. For each level of the standard drafts, the drafts were submitted to the ISO representative for circulation to the authorized ISO members for comment and voting. Then, in the ISO meeting all comments were answered, rebutted and discussed. After the discussion in the ISO meeting, the conclusion related to the standard draft was given. The international standards for rubber household gloves (ISO 20057 Rubber household gloves – General requirements and test methods) and rubber thread (ISO 20058 General purpose rubber thread – Specification) have been published and used since 2017.
Identification of bacteria caused bad odors in the rubber plants
Authors: Choowongkomon K , Pumloifa S , Hansupalak N , Insuan W 
Published: August 2019

Abstract
The problem of odor from the rubber latex industry is a major problem in the rubber industry. Due to complaints about odors from the people in the industry areas. One cause of odor may be associated with the biodegradation process by bacteria such as carbohydrates, proteins, etc., which are present in the serum. And gas generation. At present, industrial plants use water-absorbing odor to reduce the intensity of odor, but it is not very good. Therefore, if you can eliminate the microorganisms that cause odors. It may help reduce the intensity of the smell. This research was conducted to isolate microorganisms from rubber plantations and rubber plant for odor analyzed use in GC-MS technique. Comparing the gas composition with the gas data obtained from the actual air sampling. Odor composition analysis It found that the rubber and lump rubber composed with Acetic acid, propanoic acid, 2-methyl-propanoic acid, butanoic acid, 3-methyl-butanoic acid, pentanoic acid.
Microwave Irradiation Synthesized Cobalt-Loaded Nitrogen-Doped Active Carbon as an Efficient Catalyst for Selective Oxidation of Ethylbenzene
Authors: Zhan H J , Yang W H , An M Q , Zeng N , Hu Y R , Ma X T , Zhao L 
Published: August 2019

Abstract
Microwave irradiation technology was used to dope nitrogen on the active carbon using dicyanodiamide as nitrogen source. The obtained nitrogen-doped active carbon was then modified by an ion impregnation method to load cobalt ions. The as-prepared cobalt-loaded nitrogen-doped active carbon (Co–N–AC) was characterized by techniques such as XRD, SEM, XPS, EA and AAS and the catalytic performance was evaluated via the selective oxidation of ethylbenzene under solvent-free condition using molecular oxygen as oxygen source. The results showed that 23.2 mol% conversion of ethylbenzene and 95.7% selectivity to acetophenone was obtained over 3%Co–N–AC, in which the excellent catalytic performance of the catalysts may be attributed to the stable doped N, the highly dispersed Co on the surface of AC and the structure of Co-N bond.
Effect of Hybrid Alumina/Aluminium Foil Dome Diaphragms on Sound Performance of Loudspeaker
Authors: Zung Christian , Cai Ran , Levitsky Igor , Nie Xueyuan 
Published: August 2019

Abstract
Plasma electrolytic oxidation (PEO) technology enables to fabricate a nanostructured ceramic top layer on an aluminium foil, called hybrid alumina/aluminium material, which has the enhanced properties like hardness, stiffness, wear resistance and corrosion resistance. In this work, PEO nanostructured coatings were applied to aluminium speaker domes to study what effects PEO coatings could offer. A set of treated domes were processed to have a thin coating and the other processed to have a thicker coating. Afterwards, the speaker domes were conducted with several tests and measurements. From the frequency range of a low frequency (200 Hz to 5 kHz) there was very little downside to adding the coating, only at middle frequencies (5 kHz to 12 kHz) a slight decrease in sensitivity can be found. In high range frequencies (12 kHz to 14 kHz) the sensitivity in dampening and sound distortion resistance was increased. In general, these qualities should lead to a better, cleaner sound quality reproduction.
From the ReRu-rich δ Phase to the Intergrowth of the P and the σ Phases in Ru-bearing Ni-base Superalloys
Authors: Wang Chunhui , Chen Yanhui , Chen Jingyang , Xue Fei , Li Wei , Yang Luyan 
Published: August 2019

Abstract
The morphology, composition, structure and formation mechanisms of precipitates in three Ni-base single crystal superalloys containing 3.2 at. % Ru by adding Cr (0 to 6.5 at. %) were investigated. The precipitation speed in the Low-Cr alloy was low at a temperature of 1100 °C. The ReRu-rich δ phase, with a hexagonal structure, was the primary phase. A high quantity of precipitates appeared in the high Cr alloy after 50 h of heat treatment. The quantity increased rapidly from that time. The σ phases dominated the precipitate after a short period of heating at 1100 °C, with the orientation relationship corresponding to [111]
γ/γ′ // [111]
σ
and (110)
γ/γ′ // (110)
σ
. The σ phase transformed into the intergrowth of the σ and the P phases discontinuously through the σ needle as the exposure time increased. The large elemental γ/γ′ partitioning ratio of Re in 6.5 at. % Cr was the key factor that promoted nucleation in the σ phase.
Preparation and Characterization of Monodisperse Magnetic Carbon Microspheres with Controllable Shell Thickness and High Water Solubility
Authors: Liang Shengji , Chen Kui , Han Jinling , Wu Bin 
Published: August 2019

Abstract
Core-shell magnetic carbon microspheres with good monodispersity and uniformity were obtained. Good monodispersity was achieved by adding a dispersant in the solvothermal synthesis of magnetic core, as the criterion for good dispersibility was set up through dynamic light scattering (DLS). The excellent dispersing agent (Poly (4-styrenesulfonic acid-co-maleic acid, SS: MA = 3:1) sodium salt, PSSMA) has been selected among three dispersants, which greatly improves the dispersibility of the magnetic core in the coating environment, thereby obtaining a core-shell structure with uniform coating and monodispersity. Carbon shell was gained by deposit coating process of resorcinol formaldehyde resin (RF) onto the magnetic core and then subsequent carbonization under N2 atmosphere. At the same time, the carbon shell thickness can be adjusted up to 70 nm by adjusting the RF shell thickness which is tunable ranging from 30 to120 nm.
Influence of Casting Temperature of Low Carbon Steel on the Interface Layer of Composite Protective Plate
Authors: Gao Hui , Zhang Wenbing , Chen Shumei , Lyu Kuilong 
Published: August 2019

Abstract
Based on the liquid/semi-solid bimetal composite casting technology, the low carbon steel/the high chromium casting iron wear-resistant plate was prepared, and the casting temperature of the low carbon steel was investigated on the microstructure and the mechanical properties of the bimetal composite plate. The action of the reasonable casting temperature can make the two kinds of metals play to their excellent properties, and not only has the high wear resistance, but only guarantee to achieve strong match between two kinds of metals. The results showed that the low carbon steel at different casting temperature was poured into the mold, and its upper surface was in the semi-solid state. The semi-solid contact areas between the low carbon steel and the high chromium casting iron have evolved into into the interface layer, and there is no porosity and inclusion in the interface layer . The metallurgical bonding quality is good, and the Rockwell hardness is about 50∼52HRC, and tensile strength of is about 550∼610MPa.
Influence of the Mechanical Properties of B4C/Al Composite with Graphene Nanosheet Dopping
Authors: Zhang Liu , Wang Zhi , Shi Guopu , Li Qinggang , Wu Junyan 
Published: August 2019

Abstract
Graphene nanosheet has been brought to the B4C/Al composites to investigate the microstructure and mechanical properties of the materials which were prepared via vacuum hot press sintering at 680 °C, with sintering pressure of 30 MPa and soaking time of 90 min. XRD analysis illustrated that there was only one new phase AlB2 detected out in the composite after sintering. The composite without GN addition was endowed better density than the GN addition one. Nevertheless, the mechanical properties of GN addition composite exhibited more superior than that of non GN addition composite, Vickers hardness, bending strength and fracture toughness were achieved respectively 54.13 ± 4.57 Hv, 238.36±10.24 MPa and 4.23±0.12 MPam1/2. In summary, GN has played a satisfactory character in promoting the mechanical property of B4C/Al composites in the present experiment.
Research on Application of New Types of Fiber Reinforced Composites in Safety Technology
Authors: Wei Huazhen , Wang Danyong , Liu Juncong , Zhang Haiyun , Li Shuhu , Liu Yadong 
Published: August 2019

Abstract
Application and key manufacturing technologies of new types of fiber reinforced composites in safety ranges were reviewed in this paper. To make full use of high-property kinds of fibers and develop more better-property fiber reinforced composites, the corresponding goodness and weakness and manufacturing key technologies are given so as to find appropriate and innovative new-technological cases and provide suggestions support for deeper researches.
Simulation Analysis of Flow Field in Engine Compartment of a Rear-Mounted Exhaust
Authors: Xie Y Y , Zhang L Q , Yan Y L , Qiu S W , Tan C Z 
Published: August 2019

Abstract
The numerical simulation of the flow field in the engine compartment of a car is the basis for the evaluation and research of the air flow characteristics in the engine compartment. In this paper, the computational fluid simulation software STAR-CCM+ was applied to simplify the vehicle model of a rear-mounted exhaust. The surface wrapper and surface remesher were used to obtain the whole vehicle surface mesh. Combining with the vehicle wind tunnel model was generated the volume mesh based on Trim mesh sub-regional method. Then, the finite element model of the car engine compartment was established. Three-dimensional flow field in engine compartment was analyzed under reasonable boundary conditions, and found the reflow at climbing is more apparent as compared with that at high constant speed. Then the flow rate experiment of the whole vehicle was obtained wind speed value of the windward surface of the radiator. The error between the simulated value and the experimental value is within 10%, indicating that the simulation model established in this paper is reliable and possesses high simulating accuracy.
Effects of Three-Step Aging on Microstructure and Stress Corrosion Cracking of 7N01 Aluminum Alloys
Authors: Wang Shuai , Luo Binghui , Zheng Yaya , Tan Sizhi , Jiang Gen , Cai Guochao 
Published: August 2019

Abstract
The precipitation of 7N01 alloy after three-step ageing treatment at 65°C, 100°C and 150°C has been investigated. The SAED results show that at 65°Cpre-aging the GPI zones were precipitated from the quenched solid solution and aging at 150°C results in evolution of the GPI zones formed during under ageing into the η’ phase. It was found that compared with the two-stage aging(T74) and T6 aging, pre-aging at 65°C significantly increased number density of η’ phase. The modified microstructure results in tensile properties comparable to that of the T6 temper, but with significantly improved the resistance of stress corrosion cracking performance.
Experimental Study on Splitting Strength of AC-25 Emulsified Asphalt Cold Recycled Mixture
Authors: Sun Zhaohui , Song Zhiqi , Cheng Hanyag , Sun Weidong 
Published: August 2019

Abstract
In the asphalt pavement design, determining reasonable structural parameters plays an important role in reducing early damage to the pavement and increasing use time of the pavement. Based on the optimized design, the dry-wet splitting strength and freeze-thaw splitting strength of AC-25 cold recycled emulsified asphalt mixture were studied. The results indicate that the dry-wet splitting strength of AC-25 cold recycled emulsified asphalt mixture is much higher than the technical requirements of the specification. The ratio of dry-wet splitting strength and the ratio of freezing-thawing cycle strength meet the indicators of the specification. Engineering application can refer to grading results of design.
A Facile Synthesis of TiO2 with Enhanced Photocatalytic Performance for Removal of Methylene Blue
Authors: Xie Hu , Wang XinRan , Chen Jianjun 
Published: August 2019

Abstract
Titanium dioxide (TiO2) is the most representative and widely used photocatalyst. To further enhance the photocatalytic efficiency of titanium oxide, in this study, we developed a facile hydrothermal method to synthesize iron-doped TiO2. Iron-doped TiO2 was synthesized by hydrothermal method with titanium monoxide as raw material and iron sulfate as the dopant. The color of the TiO2 powder was light yellow andthe powders were characterized using scanning elecrron microscope,X-ray diffraction, and We demonstrated enhanced absorption of TiO2 towards visible-light and enhanced photocatalytic efficiency through iron-doping method.
Agricultural Sustainable Development and Economic Stability in Northeast China under Climate Change
Authors: Chen Yilin , Wu Nan 
Published: August 2019

Abstract
At present, a sustainable agricultural development is extremely important for economic backwardness in the northeast of China to stabilize local economy and prevent economic disaster. The paper is constructing an economic climate model of northeast region, the inspection result of this model represents: climate warming, drought, and extreme climate bring significant negative effect towards cereal output in northeast region; and this paper also represents the analysis results that the price, labor force, capital and technology inputs have a positive effect on cereal output. Recognizing these impacts correctly and taking active measures will be favorable to ensure a sustainable development and regional economic stability of the northeast region.
Effect of CaO on Phase Separation and Properties in Na2O-CaO-SiO2-P2O5 Opaque Glass
Authors: Luo Lida , Li Zihao , Wang Qingwei , Lan Kaidong , Jiang Weizhong 
Published: August 2019

Abstract
In the Na2O-CaO-SiO2-P2O5 opaque glass system, the effects of CaO on the phase separation and properties were investigated by means of SEM, XRD, UV-VIS Spectro Photometer, Thermal dilatometer, etc. The results showed the size of the second phases enriched with phosphate became smaller from 200nm to 80nm with the increase of CaO concentration. CaO had clear influence on the transmittance of opal glass, and the glass was changed into semi opaque when the amount of CaO was 12%. It also affected the crystallization of the glass samples, especially in crystal peak intensity of the Na3Ca6(PO4)5 and Zn2P2O7. the coefficient of thermal expansion of sample was reduced but the density increased with the increase of CaO concentration. Results showed that Calcium ions in Na2O-CaO-SiO2-P2O5 system was good to bind with the P ions and boost the separation of the second phase and the crystallization.
Clinical Application of Intelligent System of Weaning from Mechanical Ventilation
Authors: Wang Na , Han Wei , Wang Zaitang , Li Qun 
Published: August 2019

Abstract
Long-term mechanical ventilation is associated with many complications. Intelligent weaning from mechanical ventilation system benefits patients with mechanical ventilation, especially those who have difficulty in weaning from ventilation. It is another great progress in the application of artificial intelligence in medical practice.
Research on Residual Stress of Cr12 Surface Layer after Rolling Processing
Authors: Qi Kaihua , Guo Peiquan , Zhang Haiquan , Qiao Yang 
Published: August 2019

Abstract
In normal temperature, the effect of rolling motion and extrusion stress will lead to the occurrence of subgrain size refinement, changes of the dislocations and phase transition caused by plasticity, which will change the mechanical properties of the workpiece’s material on the surface layer and directly affect the fatigue strength and service life of the workpiece. In this paper, the residual stress of Cr12 after rolling processing by different rolling pass and contact stress are studied through experiments. Through the analysis of the test results, it is shown that: with the increase of rolling pass, the residual stress on the workpiece surface layer increase continuously, after rolling 3 passes, the residual stress will no longer continue to increase and remain stable. When the contact stress is less than 717 MPa, the residual stress increase obviously, and when it reaches 717 MPa, the residual stress keep relatively stable state with the increase of contact stress. In the depth direction, the residual stress decreases with the depth, and the maximum residual stress may appear at a certain depth from the surface.
Application of Alginate Oligosaccharides and Sodium Alginate in Breast Abscess Incision and Drainage
Authors: Miao Yayun , Sun Tong , Sun Guang 
Published: August 2019

Abstract
Objective: To evaluate the efficacy of alginate oligosaccharides and sodium alginate (seaweed biological glue) after incision drainage for breast abscess. Methods: randomly selected 80 patients with breast abscess, observation group and control group 40 cases, observation group using alginate oligosaccharides, sodium alginate (seaweed biological glue) for postoperative patients with breast abscess incision drainage treatment disposal, the control group with saline treatment disposal, using t test to compare two groups of patients with postoperative incision healing time, switching frequency, the satisfaction degree of the patients of postoperative scar, using chi-square test to compare the postoperative recurrence rate. Results: the incisions of the two groups were completely healed, and the observation group had shorter healing time, fewer drug changes, lower recurrence rate and higher satisfaction to postoperative scars than the control group. Conclusion: the treatment of patients with breast abscess after open and drainage with algal oligosaccharide and sodium alginate (alginate biogel) after operation can significantly shorten the wound healing time of patients, reduce The Times of dressing changes, and improve patients’ satisfaction with scars and reduce recurrence.
Analysis of Ultrasonic Vibration Belt Grinding Processing Method
Authors: Wu Qingling , Wang Cui , Cui Mingming , Liu Qiang 
Published: August 2019

Abstract
The sand belt abrasive distribution is relatively uniform, the grinding property is good, it is not easy to burn the workpiece. The sand belt grinding process has great flexibility and adaptability, it can be used for grinding of inner and outer circles, plane and complex curved surfaces. Compared with the closed belt, the open belt is continuously feed slowly. During the grinding process, new abrasive grain continuously enters into the grinding area. The surface quality is good, and one workpiece can be processed in one installation, reducing the assembly error caused by replacing the belt and shortening the processing time.For ultrasonic assisted machining technology, the two-dimensional ultrasonic assisted grinding have better processing results in reducing the grinding heat, the wear of the abrasive tool and the grinding force. By referring to the above processing techniques, this paper proposes a two-dimensional ultrasonic vibration open belt grinding processing method.
Research on Scheduling of Furnace Loading Quality Maximization in Forging Heat Treatment Process
Authors: He Fei , Wang Zeyu , Shen Kang , Jia Rongjing 
Published: August 2019

Abstract
In this paper, the optimal scheduling problem of batch furnace charging is carried out for the furnace of the heat treatment process system in the forging industry. The scheduling research aims at maximizing the quality. Firstly, according to the production capacity of each heating furnace in the system, the maximum capacity and the minimum energy consumption of the system are solved and the loading capacity of each furnace under the optimal production is given. Then through the continuous batching of the forging batch furnace charging, and regress to the discrete problem research. finally, the optimization research of the furnace quality is realized, which provides a new scheme for the research of the forging furnace charging scheduling problem.