scholarly journals Research on the Rheological Properties of the Plant Oil Pitch

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Weishuai Ji ◽  
Dongpo He ◽  
Di Wu ◽  
Maryam Kargar Razi
Keyword(s):  
Rheological Properties ◽  
Analytical Method ◽  
Narrow Range ◽  
Dynamic Shear ◽  
Analysis Method ◽  
Plant Oil ◽  
Microstructure Characteristics ◽  
Original Analysis ◽  
Shear Tester ◽  
Better Than

In the analysis of the rheological properties of the plant oil pitch, the original analysis method has a narrow range of analysis indicators, which affects the reliability of the analysis results. In this study, a new analytical method for the rheological properties of the plant oil pitch was designed. The microstructure characteristics of the plant oil pitch were obtained using a high-power microscope, the viscosity of the plant oil pitch was measured, and the ductility of the plant oil pitch was analyzed by setting the analysis index. The above parts are integrated, and the dynamic shear tester is used to complete the analysis of pitch rheological properties. So far, the analysis method for the rheological properties of the plant oil pitch has been designed. It can be seen from the comparison of the experimental links that this analysis method is better than the original analysis method in terms of the scope of analysis indicators. In conclusion, the analytical method of the rheological properties of the plant oil pitch is more reliable.

Use of local crumb rubber as modifier, to improve the rutting resistance of bitumen

2021 ◽  
Author(s):  
Muhammad Saad Waheed ◽  
Muhammad Jamal ◽  
Manzoor Elahi
Keyword(s):  
Rheological Properties ◽  
Crumb Rubber ◽  
Critical Component ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer ◽  
Rutting Resistance

Abstract Bitumen is a critical component in asphaltic pavements and is often the cause of many road failures. The commercial modifiers that are being used to enhance the properties of bitumen are quite expensive; therefore, this article is dedicated to explore the potential of local crumb rubber as bitumen modifier. Two grades of bitumen pen grade (60/70 and 80/100) were modified with local crumb rubber. Rheological properties of modified and unmodified bitumen were evaluated using Dynamic Shear Rheometer. The results indicated an increase in the rutting resistance of bitumen. This indicates that Local crumb rubber can be used to enhance the properties of bitumen.

A Laboratory Study of Rheological Properties of Soft Mud Using a Dynamic Shear-controlled Oscillatory Viscometer

2018 ◽  
Vol 85 ◽  
pp. 1226-1230 ◽  
Author(s):  
Sihang Nie ◽  
Qin Jiang ◽  
Lizhu Wang ◽  
Jun Zhang ◽  
Peng Liu
Keyword(s):  
Rheological Properties ◽  
Laboratory Study ◽  
Dynamic Shear

Steady and dynamic shear rheological properties of açai pulp (Euterpe oleraceae Mart.)

2009 ◽  
Vol 92 (4) ◽  
pp. 425-431 ◽  
Author(s):  
R.V. Tonon ◽  
D. Alexandre ◽  
M.D. Hubinger ◽  
R.L. Cunha
Keyword(s):  
Rheological Properties ◽  
Dynamic Shear

Modeling schedule overrun and cost escalation percentages of highway projects using fuzzy approach

2017 ◽  
Vol 24 (5) ◽  
pp. 809-827 ◽  
Author(s):  
Ahmed Ebrahim Abu El-Maaty ◽  
Amr M. El-Kholy ◽  
Ahmed Yousry Akal
Keyword(s):  
Linear Regression ◽  
Design Methodology ◽  
Fuzzy Theory ◽  
Linear Regression Analysis ◽  
Fuzzy Approach ◽  
Analysis Method ◽  
Highway Projects ◽  
Content Type ◽  
Theoretical And Numerical Analysis ◽  
Better Than

Purpose Modeling represents the art of translating problems from an application area into tractable mathematical formulations whose theoretical and numerical analysis provides insight, answers and guidance useful for the originating application. The purpose of this paper is to determine the causal causes of schedule overrun and cost escalation of highway projects in Egypt in order to be used as independents variables in mathematical models for predicting the percentages of schedule overrun and cost escalation of such projects in Egypt. Design/methodology/approach A survey of a randomly selected samples yielded responses from 40 owners, 15 consultants and 56 contractors. The survey includes 38 schedule overrun factors and 26 cost escalation factors. The effectiveness degree of the identified factors has been identified by the triangle fuzzy approach. Findings The results of the survey show that “contractor’s technical staff is insufficient and ineligible to accomplish the project” is the most important cause of schedule overrun, while the major cause of cost escalation is inadequate preparation of the project concerning planning and execution. Originality/value The main contribution of this study is predicting the percentages of schedule overrun and cost escalation of highway projects in Egypt. Through the application of the linear regression analysis method and statistical fuzzy theory, four predictive models have been developed and it has been noted that the linear regression-based model shows prediction accuracy better than statistical fuzzy-based model in predicting percentages of schedule overrun and cost escalation.

scholarly journals Analysis of Production Efficiency Broiler Chicken Farm on Pattern Partnership of Contract Farming in Kampar District

2020 ◽  
Vol 3 (1) ◽  
pp. 60-70
Author(s):  
Elsyintia Dwi Putri ◽  
Cepriadi Cepriadi ◽  
Fajar Restuhadi
Keyword(s):  
Analytical Method ◽  
Broiler Chicken ◽  
Production Efficiency ◽  
Efficiency Analysis ◽  
Production Costs ◽  
Analysis Method ◽  
Contract Farming ◽  
Maximum Profit ◽  
Chicken Farm ◽  
Dea Method

Chicken broiler is the main commodities  and largest in Indonesia, where Kampar district into production centre in the province of Riau. According to the company's partners, breeder who partnered with the pattern contract farming hasn't been able to combine the use of livestock production facilities as well as labor. This resulted in not maximizing the profits obtained by breeders. The purpose of the research was to analyze broiler chicken farming and analyze the efficiency of broiler chicken production. Analytical method used is the analysis method of broiler chicken flocks and the DEA method. Respondents needed is 40 farmers who have partnered with the contract farming pattern. The results showed that the production costs of Rp.180.031.229 /period, revenue Rp.203.573.865/period, so that the profit amounting to Rp 23.542.636/period with R/C ratio of 1.13. The results of the efficiency analysis show that inefficient farmers are more numerous than those who have been efficient. It showed breeders hasn't been able to use the minimum input produce output that is optimal and maximum profit.

scholarly journals An Analytical Method for Parameter Interpretation of Fracture Networks in Shale Gas Reservoirs considering Uneven Support of Fractures

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Shijun Huang ◽  
Jiaojiao Zhang ◽  
Sidong Fang ◽  
Xifeng Wang
Keyword(s):  
Data Analysis ◽  
Shale Gas ◽  
Analytical Method ◽  
Material Balance ◽  
Gas Production ◽  
Production Data ◽  
Analysis Method ◽  
Gas Reservoirs ◽  
Data Analysis Method ◽  
Parameter Interpretation

In shale gas reservoirs, the production data analysis method is widely used to invert reservoir and fracture parameter, and productivity prediction. Compared with numerical models and semianalytical models, which have high computational cost, the analytical model is mostly used in the production data analysis method to characterize the complex fracture network formed after fracturing. However, most of the current calculation models ignore the uneven support of fractures, and most of them use a single supported fracture model to describe the flow characteristics, which magnifies the role of supported fracture to a certain extent. Therefore, in this study, firstly, the fractures are divided into supported fractures and unsupported fractures. According to the near-well supported fractures and far-well unsupported fractures, the SRV zone is divided into outer SRV and inner SRV. The four areas are characterized by different seepage models, and the analytical solutions of the models are obtained by Laplace transform and inverse transform. Secondly, the material balance pseudotime is introduced to process the production data under the conditions of variable production and variable pressure. The double logarithmic curves of normalized production rate, rate integration, the derivative of the integration, and material balance pseudotime are established, and the parameters are interpreted by fitting the theoretical curve to the measured data. Then, the accuracy of the method is verified by comparison the parameter interpretation results with well test results, and the influence of parameters such as the half-length and permeability of supported and unsupported fractures on gas production is analyzed. Finally, the proposed method is applied to four field cases in southwest China. This paper mainly establishes an analytical method for parameter interpretation after hydraulic fracturing based on the production data analysis method considering the uneven support of fractures, which is of great significance for understanding the mechanism of fracturing stimulation, optimization of fracturing parameters, and gas production forecast.

scholarly journals ANALISIS KESALAHAN PENGGUNAAN KATA BANTU 的 [DE] DAN 得 [DÉ] DALAM PEMBELAJARAN BAHASA MANDARIN KELAS XI SMA ISLAM ATHIRAH 1 MAKASSAR

2020 ◽  
Vol 1 (2) ◽  
pp. 159
Author(s):  
Elmira Elmira ◽  
Misnawaty Usman ◽  
Burhanuddin Burhanuddin
Keyword(s):  
Data Analysis ◽  
Error Analysis ◽  
Analytical Method ◽  
Analysis Method

Abstract. This study aims to classify the types of errors made by students of class X1 SMA Islam Athirah 1 Makassar in the use of的 [de] (belonging/that) and得[dé] (adverb) auxiliary words in Mandarin. The analytical method  is  used the error analysis method proposed by Ellis in Tarigan (1984). The results of the data analysis showed that there were 170 errors in the students' use of 的 [de] (belonging / that)  and  得[dé] (adverb) auxiliary words. There were 111 errors in the use of the的 [de] (belonging / that)   auxiliary words (65.29%), which were in the sufficient error category and the error in the use of the得[dé] (adverb)  auxiliary word, namely as many as 59 errors  (34.71%) which were in the level of error in the category less The error in using the auxiliary的 [de] (belonging / that) which / belongs is in the sufficient with 111 errors (65.29% ). The error in using the auxiliary word 得 [dé] (adverb) is in the less with  59 errors (34.71%).

scholarly journals WORKABILITY AND RHEOLOGICAL PROPERTIES OF EVA-MODIFIED BITUMEN COMPARED WITH PG 76 BINDER

2018 ◽  
Vol 80 (4) ◽  
Author(s):  
Ebenezer Akin Oluwasola ◽  
Mohd Rosli Hainin ◽  
Mohd Khairul Idham ◽  
Modupe Abayomi
Keyword(s):  
Rheological Properties ◽  
Vinyl Acetate ◽  
Softening Point ◽  
Ethylene Vinyl Acetate ◽  
Climatic Conditions ◽  
Dynamic Shear ◽  
Modified Bitumen ◽  
Dynamic Shear Rheometer ◽  
Modified Binder

The failures of the flexible pavements are not only caused by harsh climatic conditions prevailing in most of the tropical countries but also due to increase in traffic. The ethylene vinyl acetate (EVA) modification of the bitumen can strengthen the properties of binders and also improve the quality of bitumen used for pavements construction. This paper reports the changes in physical and rheological properties of unaged 80-100 grade bitumen modified with different percentages of EVA and compared with the properties of PG 76 binder. The penetration, softening point and viscosity properties were studied. The rheological properties were measured using dynamic shear rheometer and the test was performed at temperatures ranging from 46 to 76 ⁰C at intervals of 6 ⁰C. It was noted that, after modification, the properties of binders had improved. The results show that 5% EVA content by weight in modified binder is adequate in terms of physical and rheological properties studied. In addition, the properties of 5% EVA modified 80-100 grade bitumen are similar to PG 76 binder.

scholarly journals The effects of training breadth on motor generalization

2014 ◽  
Vol 112 (11) ◽  
pp. 2791-2798 ◽  
Author(s):  
Max Berniker ◽  
Hamid Mirzaei ◽  
Konrad P. Kording
Keyword(s):  
Force Field ◽  
Visual Feedback ◽  
Narrow Range ◽  
Small Region ◽  
Large Region ◽  
Dynamic Disturbance ◽  
Learning Experiment ◽  
Broad Group ◽  
Generalize Information ◽  
Better Than

To generate new movements, we have to generalize what we have learned from previously practiced movements. An important question, therefore, is how the breadth of training affects generalization: does practicing a broad or narrow range of movements lead to better generalization? We address this question with a force field learning experiment. One group adapted while making many reaches in a small region (narrow group), and another group adapted while making reaches in a large region (broad group). Subsequently, both groups were tested for their ability to generalize without visual feedback. Not surprisingly, the narrow group exhibited smaller adaptation errors, yet they did not generalize any better than the broad group. Path errors during generalization were indistinguishable across the two groups, whereas the broad group exhibited reduced terminal errors. These findings indicate that overall, practicing a variety of movements is advantageous for performance during generalization; movement paths are not hindered, and terminal errors are superior. Moreover, the evidence suggests a dissociation between the ability to generalize information about a novel dynamic disturbance, which generalizes narrowly, and the ability to locate the limb accurately in space, which generalizes broadly.

Sign in / Sign up

Export Citation Format

Share Document