Key Technologies of Crop Dividers of Sugarcane Harvesters: A Review

2021 ◽  
Vol 37 (5) ◽  
pp. 839-849
Author(s):  
Jing Bai ◽  
Shaochun Ma ◽  
Fenglei Wang ◽  
Haonan Xing ◽  
Zhengliang Ding ◽  
...  
Keyword(s):  
Field Experiments ◽  
New Technologies ◽  
List Type ◽  
Simulation Studies ◽  
Comprehensive Review ◽  
Research Status ◽  
Advantages And Disadvantages ◽  
Key Technologies ◽  
Sugarcane Harvester

HighlightsThis article focuses on crop dividers of sugarcane harvesters.Four crop dividers were briefly reviewed.The research status of crop dividers was introduced.The potential new technologies and development directions of spiral crop dividers were presented.Abstract. The crop divider is an important mechanism of a sugarcane harvester, which affects the efficiency and quality of sugarcane mechanical harvesting. This article mainly summarized the key technologies of crop dividers. Firstly, four crop dividers (spiral crop divider, finger-chain crop divider, combined crop divider, and lever crop divider) were briefly reviewed. The advantages and disadvantages of different crop dividers were then summarized. The research status of crop dividers was introduced with theoretical analysis, simulation studies, and field experiments. Finally, the scientific researches and commercial machines were compared for a comprehensive review. Additionally, the potential new technologies and development directions of spiral crop dividers were presented to improve the performance and adaptability of sugarcane harvesters. This article is expected to provide a reference for the design of crop dividers. Keywords: Crop divider, Mechanical harvesting, Sugarcane, Sugarcane harvester.

Sugarcane Basecutters: A Critical Review

2021 ◽  
Vol 37 (2) ◽  
pp. 251-265
Author(s):  
Fenglei Wang ◽  
Shaochun Ma ◽  
Haonan Xing ◽  
Jing Bai ◽  
Yezhen Yang ◽  
...  
Keyword(s):  
Critical Review ◽  
Field Experiments ◽  
Optimization Methods ◽  
Cane Yield ◽  
Accurate Information ◽  
List Type ◽  
Advantages And Disadvantages ◽  
Damage Process ◽  
Sugarcane Harvester ◽  
Cutting Modes

HighlightsThis article is focused on the technology review of sugarcane basecutters.Two cutting theories and two cutting modes are briefly reviewed.Three optimization methods of parameters for the sugarcane basecutter are summarized.Four potential research interests to improve the basecutting quality are discussed.Abstract. Basecutter is a core component of a sugarcane harvester, and its performance significantly influences cane yield and harvesting efficiency. Therefore, it is meaningful to conduct a critical review of sugarcane basecutters. In this article, an introduction about basecutter structure was performed first; then two cutting theories (support/free cutting) and two cutting modes (straight/sliding cutting) were briefly reviewed; and the advantages and disadvantages of different cutting modes were summarized. It was followed by a comprehensive introduction of three optimization methods: theoretical analysis and simulation, indoor experiments, and field experiments. Finally, four potential research interests in improving basecutting quality and exploring the stubble damage process were discussed. In this review, the comprehensive, detailed, and accurate information about sugarcane basecutter was expected to provide engineers with a technology reference to improve the basecutting performance. Keywords: Basecutter, Cutting theories and modes, Optimization methods, Potential research interests, Sugarcane harvester.

scholarly journals Test Gas Generation from Pure Liquids: An Application-Oriented Overview of Methods in a Nutshell

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Yue Li ◽  
Tim Täffner ◽  
Michael Bischoff ◽  
Bernd Niemeyer
Keyword(s):  
Organic Compounds ◽  
Field Experiments ◽  
Gas Generation ◽  
Flow Rates ◽  
Test Gas ◽  
Advantages And Disadvantages ◽  
Volatile Organic ◽  
Different Temperatures ◽  
Accuracy And Stability

The generation of test gas from pure liquids has a wide variety of applications in laboratory and field experiments, for which the quality of the test gas is of significance. Therefore, various methods for test gas generation have been designed. Each method has unique advantages and disadvantages. Thus, a short overview is presented within the scope of this paper. Furthermore, a common bubbler system is presented, which was built to generate test gas from volatile organic compounds for experimental usage in laboratory applications. An analysis is conducted with respect to the generated concentrations at different temperatures and flow rates of the diluting gas. Accuracy and stability of this method are investigated.

scholarly journals 3D Digital Impression Systems Compared with Traditional Techniques in Dentistry: A Recent Data Systematic Review

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1982 ◽  
Author(s):  
Marco Cicciù ◽  
Luca Fiorillo ◽  
Cesare D’Amico ◽  
Dario Gambino ◽  
Emanuele Mario Amantia ◽  
...  
Keyword(s):  
New Technologies ◽  
Digital Impression ◽  
New Device ◽  
Advantages And Disadvantages ◽  
Impression Technique ◽  
Impression Materials ◽  
Key Factor ◽  
Dental Impression ◽  
Digital Or

The advent of new technologies in the field of medicine and dentistry is giving improvements that lead the clinicians to have materials and procedures able to improve patients’ quality of life. In dentistry, the last digital techniques offer a fully digital computerized workflow that does not include the standard multiple traditional phases. The purpose of this study is to evaluate all clinical trials and clinical randomized trials related to the digital or dental impression technique in prosthetic dentistry trying to give the readers global information about advantages and disadvantages of each procedure. Data collection was conducted in the main scientific search engines, including articles from the last 10 years, in order to obtain results that do not concern obsolete impression techniques. Elsevier, Pubmed and Embase have been screened as sources for performing the research. The results data demonstrated how the working time appears to be improved with digital workflow, but without a significant result (P = 0.72596). The papers have been selected following the Population Intervention Comparison Outcome (PICO) question, which is related to the progress on dental impression materials and technique. The comparison between dentists or practitioners with respect to classic impression procedures, and students open to new device and digital techniques seem to be the key factor on the final impression technique choice. Surely, digital techniques will end up supplanting the analogical ones altogether, improving the quality of oral rehabilitations, the economics of dental practice and also the perception by our patients.

Research on Production of Bluecoke with Low Temperature Carbonization Process

2012 ◽  
Vol 724 ◽  
pp. 221-224
Author(s):  
Lei Wu ◽  
Jun Zhou ◽  
Xin Zhe Lan ◽  
Xi Cheng Zhao ◽  
Yong Hui Song ◽  
...  
Keyword(s):  
Low Temperature ◽  
New Technologies ◽  
Coke Oven ◽  
Raw Material ◽  
Carbonization Process ◽  
Advantages And Disadvantages ◽  
New Type ◽  
The Rich

Bluecoke is a new type carbon product that prepared by low temperature carbonization process, which take lignite, long flame coal, not sticky and weak glue coal as raw material. At the same time tar and coke oven gas as by-products can be obtained. Two new technologies of Bluecoke production were introduced based on summary of way of producing Bluecoke by low metamorphic coal, namely the rich oxygen carbonization and the microwave carbonization. Both ways have their advantages and disadvantages. By contrast, the quality of coke and the content of valid gas are better using microwave carbonization, which to follow-up industry chains development significantly.

scholarly journals Ventral fusion versus dorsal fusion: determining the optimal treatment for cervical spondylotic myelopathy

2013 ◽  
Vol 35 (1) ◽  
pp. E5 ◽  
Author(s):  
Matthew D. Alvin ◽  
Daniel Lubelski ◽  
Edward C. Benzel ◽  
Thomas E. Mroz
Keyword(s):  
Quality Of Life ◽  
Cervical Spondylotic Myelopathy ◽  
Controlled Trials ◽  
Complication Rates ◽  
Fusion Surgery ◽  
Comprehensive Review ◽  
Advantages And Disadvantages ◽  
Randomized Controlled ◽  
High Level

Cervical spondylotic myelopathy (CSM) often can be surgically treated by either ventral or dorsal decompression and fusion. However, there is a lack of high-level evidence on the relative advantages and disadvantages for these treatments of CSM. The authors' goal was to provide a comprehensive review of the relative benefits of ventral versus dorsal fusion in terms of quality of life (QOL) outcomes, complications, and costs. They reviewed 7 studies on CSM published between 2003 and 2013 and summarized the findings for each category. Both procedures have been shown to lead to statistically significant improvement in clinical outcomes for patients. Ventral fusion surgery has been shown to yield better QOL outcomes than dorsal fusion surgery. Complication rates for ventral fusion surgery range from 11% to 13.6%, whereas those for dorsal fusion surgery range from 16.4% to 19%. Larger randomized controlled trials are needed, with particular emphasis on QOL and minimum clinically important differences.

Optimization of Basecutter Structural Parameters for Under-the-Ground Sugarcane Basecutting

2021 ◽  
Vol 37 (2) ◽  
pp. 233-242
Author(s):  
Fenglei Wang ◽  
Shaochun Ma ◽  
Wenli Ke ◽  
Haonan Xing ◽  
Jing Bai ◽  
...  
Keyword(s):  
Power Consumption ◽  
Field Experiments ◽  
Structural Parameters ◽  
Critical Parameters ◽  
List Type ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
High Efficient ◽  
Sugarcane Harvester ◽  
Breaking Index

HighlightsAn under-the-ground basecutting mode was employed, which is different from the typical above-the-ground basecutting mode.A series of field experiments were carried out using the response surface methodology (RSM).The complicated effect of critical parameters on three indicators (stubble breaking index, stubble uprooting index, and power consumption) was explored.The optimal values of critical parameters were determined using a multi-objective optimization method.Abstract. Basecutting is an important process in mechanical sugarcane harvesting, thus, it’s necessary to develop a high-efficient basecutter. The previous research about basecutting has mainly focused on the above-the-ground basecutting instead of under-the-ground basecutting. Therefore, the objective of this study was to analyze how the critical structural parameters, such as blade number (BN), oblique angle and bevel angle of blades (OA, BA), affect the cutting performance of a sugarcane harvester with an under-the-ground basecutting mode. A series of field tests were carried out using Liugong sugarcane harvester. The experimental indexes were determined as stubble breaking index (BI), stubble uprooting index (UI), and power consumption (PC). The ANOVA results indicated that three regression models of indicators were significant, and were in agreement with the test data. Additionally, it was concluded that OA and BN were the two most important factors when optimizing BI, UI, and PC. BA was the last factor to be considered although it had significant effect on BI and UI. The multi-objective optimization results showed that the optimal parameter combination was 3 of BN, 10° of OA, and 20° of BA, and the corresponding BI, UI, and PC reached the minimum. For sugarcane growers, reduced stubble damage and power consumption could increase the sugarcane germination and decrease the harvesting cost, respectively. For sugarcane mills, this cutting mode might cause potential decrease in sugar quality, specifically sediment levels. However, this disadvantage could be overcome by optimizing basecutter parameters. Keywords: Basecutter, Cutting mode, Power consumption, Stubble breaking, Stubble uprooting, Under-the-ground basecutting.

scholarly journals Analysis of the Difference Between the Production of Computer Music and the Production of Traditional Music

2019 ◽  
Vol 3 (3) ◽  
pp. 115
Author(s):  
Junwen Su
Keyword(s):  
Production Technology ◽  
Computer Music ◽  
New Technologies ◽  
Traditional Music ◽  
Music Production ◽  
Advantages And Disadvantages ◽  
The Difference

<p>With the development of economy, all kinds of new technologies keep emerging, so does the field of music. The new computer music production technology has greatly improved the efficiency of music production and made up for the defects of traditional music production in which it is still difficult to guarantee the quality of music even if adequate preparation is made before recording. This paper discusses the advantages and disadvantages of computer music production compared with traditional music production.</p>

scholarly journals Smart Architectural Framework for Symmetrical Data Offloading in IoT

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1889
Author(s):  
Malvinder Bali ◽  
Kamali Gupta ◽  
Deepika Koundal ◽  
Atef Zaguia ◽  
Shubham Mahajan ◽  
...  
Keyword(s):  
New Technologies ◽  
Performance Metrics ◽  
Smart Devices ◽  
Data Traffic ◽  
Data Offloading ◽  
Advantages And Disadvantages ◽  
Huge Data ◽  
Architectural Framework ◽  
The Internet Of Things

With new technologies coming to the market, the Internet of Things (IoT) is one of the technologies that has gained exponential rise by facilitating Machine to Machine (M2M) communication and bringing smart devices closer to end users. By 2025, it is expected that IoT will bring together 78.4 billion of devices, thus improving the quality of life beyond our imagination; however, there are multiple potential challenges, such as the exploitation of energy consumption and the huge data traffic being generated by smart devices causing congestion and utilizing more bandwidth. Various researchers have provided an alternative to this problem by performing offloading of data, the task and computational requirements of an application at edge and fog nodes of IoT, thus helping to overcome latency issues for critical applications. Despite the importance of an offloading approach in IoT, there is need for a systematic, symmetric, comprehensive, and detailed survey in this field. This paper provides a systematic literature review (SLR) on data offloading approaches in IoT network at edge and fog nodes in the form of a classical taxonomy in order to recognize the state-of-the art mechanism(s) associated with this important topic and provide open consideration of issues as well. All of the research on classified offloading approaches done by researchers is compared with each other according to important factors such as performance metrics, utilized techniques, and evaluation tools, and their advantages and disadvantages are discussed. Finally, an efficient smart architecture-based framework is proposed to handle the symmetric data offloading issues.

scholarly journals SWOT ANALYSIS DEVELOPMENT OF BATIK BANTUL

2019 ◽  
Vol 9 (2) ◽  
pp. 355
Author(s):  
Sri Suryaningsum
Keyword(s):  
Human Resources ◽  
Natural Resources ◽  
Swot Analysis ◽  
Business Strategies ◽  
Comprehensive Review ◽  
Tourist Attractions ◽  
Advantages And Disadvantages ◽  
Product Sales ◽  
A Company

This research focuses on the development of Batik Bantul using SWOT analysis. SWOT analysis is a comprehensive review of the strengths, weaknesses, opportunities, and threats of a company. This analysis is needed to determine several strategies that must be applied to a company. Seeing the development of batik that is getting better and more in demand by tourists, the analysis to determine business strategies is of particular concern to the company. Not only the quality of the product in the spotlight, but the promotion and placement (location) of product sales. With the opportunity to increase sales at existing tourist attractions, accompanied by threats from external companies. The threat comes from other companies that present the same product at a price below the price offered by Batik Bantul craftsmen. This SWOT analysis is expected to be able to overcome the existing threats. In addition to threats and opportunities, companies must also analyze the advantages and disadvantages. The advantages possessed are used as weapons to compete in market share. While the disadvantages can be used as guidelines to improve in terms of quality, both from natural resources and human resources that exist in the company.

Can trust become a factor of economic growth? Dynamic changes in the level of trust of Russian youth

2020 ◽  
pp. 92-107 ◽  
Author(s):  
A. I. Bakhtigaraeva ◽  
A. A. Stavinskaya
Keyword(s):  
Institutional Environment ◽  
Negative Effects ◽  
Dynamic Changes ◽  
Generalized Trust ◽  
Level Of Education ◽  
Advantages And Disadvantages ◽  
The Future ◽  
Analysis Of Dynamics

The article considers the role of trust in the economy, the mechanisms of its accumulation and the possibility of using it as one of the growth factors in the future. The advantages and disadvantages of measuring the level of generalized trust using two alternative questions — about trusting people in general and trusting strangers — are analyzed. The results of the analysis of dynamics of the level of generalized trust among Russian youth, obtained within the study of the Institute for National Projects in 10 regions of Russia, are presented. It is shown that there are no significant changes in trust in people in general during the study at university. At the same time, the level of trust in strangers falls, which can negatively affect the level of trust in the country as a whole, and as a result have negative effects on the development of the economy in the future. Possible causes of the observed trends and the role of universities are discussed. Also the question about the connection between the level of education and generalized trust in countries with different quality of the institutional environment is raised.

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