scholarly journals Assessment of the Working Performance of an Innovative Prototype to Harvest Hemp Seed in Two Different Conditions of Terrain Slope

Agronomy ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 185
Author(s):  
Przemysław Baraniecki ◽  
Francesco Latterini ◽  
Walter Stefanoni ◽  
Jakub Frankowski ◽  
Katarzyna Wielgusz ◽  
...  
Keyword(s):  
Good Alternative ◽  
Test Results ◽  
Hemp Seed ◽  
Seed Loss ◽  
Terrain Slope ◽  
Working Performance ◽  
Field Efficiency ◽  
Harvesting Costs ◽  
High Share

After many decades when its cultivation was prohibited, hemp is regaining its position as one of the most versatile cultivated crops. Multiplication of monoecious hemp varieties requires manual male plants rouging to keep a high share of monoecious plants in the population. It forces relatively small multiplication fields usually oscillating around 5 ha, where the use of big harvesting machines is not economically feasible. The B-800 mower prototype for hemp panicles proved to be a good alternative to harvest seeds of tall fibrous hemp. The test results of the mower analyzed in this study show that although seed loss on a moderate slope (0.37%) was significantly higher than on a flat slope (0.13%), it was still much lower than in the case of harvesting hemp seed with a combined harvester. Moreover, the field efficiency of 93% is very satisfactory as it is reported for much bigger machines. Finally, the harvesting costs proved to be much lower than most of the machines used for harvesting hemp seed.

scholarly journals Evaluating the Suitability of a Combine Harvester Equipped with the Sunflower Header to Harvest Cardoon Seeds: A Case Study in Central Italy

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1981
Author(s):  
Francesco Latterini ◽  
Walter Stefanoni ◽  
Simone Sebastiano ◽  
Gian Maria Baldi ◽  
Luigi Pari
Keyword(s):  
Value Chain ◽  
Central Italy ◽  
Field Capacity ◽  
Field Trials ◽  
Effective Field ◽  
Seed Loss ◽  
Combine Harvester ◽  
Field Efficiency ◽  
Available Technology ◽  
Harvesting Stage

Cardoon seeds have been proved to thrive in the Mediterranean region, even under low input management and its biomass is suitable for several food and industrial uses. Despite that, a proper value chain has not been set properly and uncertainty still lays among producers and industries, particularly concerning the harvesting stage. The present study supports, via field trials, the hypothesis that cardoon seeds can be harvested using a conventional combine harvester equipped with the sunflower header. Theoretical field capacity (TFC), effective field capacity (EFC), and field efficiency (FE) were 2.36 ha h−1, 2.05 ha h−1, and 1.82 Mg h−1, respectively, while harvesting costs were calculated as 69.52 € ha−1. Seed loss was only 3.2% w/w of the potential seed yield. The machinery’s performance, costs, and seed loss are comparable with sunflower harvesting, underlying the possibility to use the available technology directly to harvest cardoon seeds.

Model Tests on Working Performance of Geogrid Reinforcement Influenced by Differential Settlement

2011 ◽  
Vol 255-260 ◽  
pp. 3376-3381 ◽  
Author(s):  
Yi Min Wang ◽  
Hao Yi ◽  
Qing Zheng Li
Keyword(s):  
Cross Section ◽  
Model Tests ◽  
Differential Settlement ◽  
Tension Stress ◽  
Vertical Deformation ◽  
Test Results ◽  
Reinforcement Effect ◽  
Geogrid Reinforcement ◽  
Working Performance ◽  
Settlement Distribution

Based on the designing scheme of highway widening project, a serial of model tests were conducted to simulate the performance of geogrid reinforced widening embankment influenced by subgrade differential settlement. Totally, 6 models including no-geogrid reinforcement embankment, geogrid reinforcement embankment, differential settlement of 0mm, 20mm, 30mm, and 50mm between existing subgrade and newly widening subgrade were built. The differential settlement distribution of embankment and stress performance of geogrid on each model were tested and analyzed. The test results show that geogrid reinforcement can effectively decrease the vertical deformation of embankment which with load on the top. The heavier the load, the more effective the decrease of vertical settlement. Meanwhile, the geogrid can significantly adjust the distribution of settlement along the cross-section direction of embankment to less differential. The geogrid at the connection area of existing embankment and newly widening embankment receives the biggest tension stress under the subgrade differential settlement. It is suggested that a solid connection between geogrid and the existing embankment is very important for getting a better geogrid reinforcement effect on decreasing the differential settlement between existing embankment and newly widening embankment.

Clinical evaluation of a prosthetic suspension system: Looped silicone liner

2016 ◽  
Vol 41 (5) ◽  
pp. 476-483 ◽  
Author(s):  
Noor Azuan Abu Osman ◽  
Hossein Gholizadeh ◽  
Arezoo Eshraghi ◽  
Wan Abu Bakar Wan Abas
Keyword(s):  
Clinical Evaluation ◽  
Testing Machine ◽  
Axial Loading ◽  
Good Alternative ◽  
Suspension System ◽  
Limb Amputation ◽  
Test Results ◽  
Tensile Testing Machine ◽  
Suspension Systems ◽  
Transtibial Amputees

Objectives: This study aimed to evaluate and compare a newly designed suspension system with a common suspension in the market. Study design: Prospective study. Methods: Looped liners with hook fastener and Iceross Dermo Liner with pin/lock system were mechanically tested using a tensile testing machine in terms of system safety. A total of 10 transtibial amputees participated in this study and were asked to use these two different suspension systems. The pistoning was measured between the liner and socket through a photographic method. Three static axial loading conditions were implemented, namely, 30, 60, and 90 N. Furthermore, subjective feedback was obtained. Results: Tensile test results showed that both systems could safely tolerate the load applied to the prosthesis during ambulation. Clinical evaluation confirmed extremely low pistoning in both systems (i.e. less than 0.4 cm after adding 90 N traction load to the prosthesis). Subjective feedback also showed satisfaction with both systems. However, less traction at the end of the residual limb was reported while looped liner was used. Conclusion: The looped liner with hook fastener is safe and a good alternative for individuals with transtibial amputation as this system could solve some problems with the current systems. Clinical relevance The looped liner and hook fastener were shown to be good alternative suspension for people with lower limb amputation especially those who have difficulty to use and align the pin/lock systems. This system could safely tolerate centrifugal forces applied to the prosthesis during normal and fast walking.

Design of a Solid Rocket Motor for Characterization of Spinning

2011 ◽  
Vol 63-64 ◽  
pp. 621-626
Author(s):  
Zai Cheng Wang ◽  
Chun Lan Jiang ◽  
Ming Li
Keyword(s):  
Rocket Motor ◽  
Structure Characterization ◽  
Test Results ◽  
Solid Rocket Motor ◽  
Ballistic Performance ◽  
Static Test ◽  
Rocket Propulsion ◽  
Working Performance ◽  
Solid Rocket

Although the rocket propulsion technologies have been used for several decades, the traditional motor can not meet the special rotating requirement. A kind of spinning solid rocket motor (SSRM) which used as power device of some kinds of dispenser was introduced. This kind of motor has the structure characterization for tangential nozzles. Its design scheme and prediction of interior ballistic performance were discussed. And the main factors should to be considered in design were analyzed comprehensively. In order to research working performance of the SSRM static test was carried out. The calculation and test results indicate that the design can satisfy general requirement of its application normally.

Fatigue of Thick Steel Plates Bent to a Low R/t Ratio

1989 ◽  
Vol 111 (3) ◽  
pp. 259-265 ◽  
Author(s):  
H. Vossoughi ◽  
K. Soudki ◽  
R. N. White ◽  
A. R. Ingraffea ◽  
M. Sansalone
Keyword(s):  
Good Alternative ◽  
Pressure Vessels ◽  
Production Costs ◽  
Steel Plates ◽  
Bend Angle ◽  
Test Results ◽  
Cold Bending ◽  
Thick Steel ◽  
Tension Loading ◽  
Bent Plates

The use of cold-bent plates, instead of welded corner joints, in the fabrication of pressure vessels can reduce production costs. The cold-bending operation is relatively easy, inexpensive, and requires minimum quality control. The attractiveness of using cold-bent plates as a potential substitute for plates with welded corner joints motivated the fatigue study described here. Fatigue test resutls are reported for nineteen 25-mm thick HY80 and HY100 steel plates, cold-bent to a nominal bend angle of 90 deg and an R/t (inner bend radius/thickness) of 1.5, and ten 25-mm thick HY80 welded corner joints. Testing was performed under zero-to-tension loading (stress ratio R = 0) at room temperature and at a frequency of 4 Hz on specimens that retained the actual cold-bending-induced residual stresses. These test results indicate that the cold-bent plates may be a good alternative to welded corner joints for cyclic loading histories.

Development of New Patching Materials for Bridge and Tunnel Structures

2011 ◽  
Vol 228-229 ◽  
pp. 1-4
Author(s):  
Hong Wei ◽  
Su Lei Zhang ◽  
Ding Li Zhang
Keyword(s):  
Mechanical Property ◽  
High Performance ◽  
Performance Test ◽  
Strength Test ◽  
Resistance Test ◽  
Construction Technology ◽  
Test Results ◽  
Operational Principle ◽  
Chloride Resistance ◽  
Working Performance

According to requirements of the mechanical property, durability quality, working performance for patching materials for bridge and tunnel, the new patching material named high-performance tensile composite mortar (HTCM) has been developed. The HTCM is a product of cement-based mortar modified by polymer. The strength test, shrinkage test, chloride resistance test, carbonization resistance test and working performance test for HTCM are introduced in this paper. According to the test results, the components, characteristics, performance and operational principle of HTCM are listed in this paper. At last, the technical characteristics and advantages for HTCM are also discussed in terms of construction feasibility based on construction technology of sprayed mortar. It has been found that the HTCM can be used as an effective patching material for bridge and tunnel.

scholarly journals Investigating the cooling rate of cane molasses as quenching medium for 0.61% C high carbon steels

10.30544/139 ◽  
2016 ◽  
Vol 22 (1) ◽  
pp. 39-50 ◽  
Author(s):  
M. R. Dodo ◽  
E. T Dauda ◽  
M. A. Adamu
Keyword(s):  
Carbon Steel ◽  
Cooling Rate ◽  
High Carbon Steel ◽  
Good Alternative ◽  
Carbon Steels ◽  
Engine Oil ◽  
Test Results ◽  
High Carbon ◽  
Cane Molasses ◽  
Quenching Medium

The effect of cooling rate of cane molasses as quenching medium for 0.61% C high carbon steels was investigated. Samples of high carbon steel were spheroidized annealed and then machined prior to the hardening process. Molasses solution of viscosity equals to that of engine oil was prepared by adding water. The samples were normalized and then austenitised at 800oC and soaked for 40 minutes and then quenched in water, engine oil, raw molasses and the prepared molasses solution. Cooling rate curves of all the quenching media used were developed. The highest cooling rate of 60oC/s was attained by the prepared molasses solution. Hardness of the test samples was evaluated. The test results obtained show that the highest hardness value (525 HVN) was obtained from the sample quenched in the prepared molasses solution. Microstructures of the various samples were analyzed using OM and SEM. In all the tests samples martensite structure was observed. It was observed that the prepared molasses solution has higher severity of quenching than that of engine oil but lower than that of water. The research showed that cane molasses can harden high carbon steel without cracking the component in the same way as engine oil, hence, molasses could be a very good alternative to engine oil for use as quenching medium.

scholarly journals Introduction of a New Index of Field Operations Efficiency

2020 ◽  
Vol 10 (1) ◽  
pp. 329
Author(s):  
Kun Zhou ◽  
Dionysis Bochtis ◽  
Allan Leck Jensen ◽  
Dimitrios Kateris ◽  
Claus Grøn Sørensen
Keyword(s):  
Operations Management ◽  
Test Results ◽  
Agricultural Machinery ◽  
Machine Breakdowns ◽  
Agricultural Operations ◽  
Field Efficiency ◽  
Set Up ◽  
Machinery System ◽  
Selection Of

The evaluation and prediction of the agricultural machinery field efficiency is essential for agricultural operations management. Field efficiency is affected by unpredictable (e.g., machine breakdowns) and stochastic (e.g., yield) factors, and thus, it is generally provided by average norms. However, the average values and ranges of the field efficiency are of limited value when a decision has to be made on the selection of the appropriate machinery system for a specific operational set up. To this end, in this paper, a new index for field operability, the field traversing efficiency (FTE), a distance-based measure, is introduced and a dedicated tool for estimation of this measure is presented. In order to show the degree of the dependence of the FTE index on the operational features, a number of 864 scenarios derived from the consideration of six sample field shapes, three conventional fieldwork patterns, four driving directions, and twelve combinations of machine unit kinematics and implement width were evaluated by the developed tool. The test results showed that variation of FTE was up to 23% in the tested scenarios when using different operational setups.

scholarly journals Pengaruh Budaya Organisasi, Lingkungan Kerja dan Kompetensi Terhadap Kinerja Pegawai Dinas Pertanian dan Perkebunan Kabupaten Bima

2020 ◽  
Vol 9 (4) ◽  
pp. 356
Author(s):  
Fauzi Muhammad Nur ◽  
Siti Nurmayanti ◽  
Sri Tatminingsih
Keyword(s):  
Organizational Culture ◽  
Data Processing ◽  
Quantitative Method ◽  
T Test ◽  
Working Environment ◽  
Test Results ◽  
Data Processing Tool ◽  
Working Performance ◽  
And Performance ◽  
Simultaneous Influence

This research is aimed to find out a partial and/or simultaneous influence of organizational culture, working environment, and competence of employees toward their working performance. The method used is a descriptive quantitative method using a questionnaire technique. Data were gained and collected since June to September 2019 by questionnaires distributed to 119 civil servants working in Agriculture and Plantation Services of Bima Regency. Furthermore, data were analyzed and processed using SPSSver.22 data processing tool for windows. Results of the analysis then interpreted and narrated descriptively. The results indicated that organizational culture (X1), working environment (X2), and competence (X3) as partially effect very much employees working performance (Y)  in Agriculture and Plantation Services of Bima Regency. It shows the value of the t-test results for each variable, namely X1: 4.779> t table 1.98; X2: 3,327> t table 1,98; and X3: 6,207> table 1.98.Keywords: organizational culture, working environment, competence, and performance

scholarly journals The comparison of biodegradable hydraulic fluid with mineral oil on the basis of selected parameters  

2011 ◽  
Vol 57 (Special Issue) ◽  
pp. S43-S49 ◽  
Author(s):  
R. Majdan ◽  
J. Kosiba ◽  
J. Tulík ◽  
D. Kročková ◽  
V. Šinský
Keyword(s):  
Mineral Oil ◽  
Technical State ◽  
Hydraulic Fluid ◽  
Test Results ◽  
Hydraulic Systems ◽  
Operational Conditions ◽  
Two Fluids ◽  
Working Performance ◽  
Agricultural Tractors ◽  
Agricultural Tractor

The paper presents a comparison of two fluids quality. The first one was mineral oil type UTTO which is commonly used in the transmission and hydraulic systems of agricultural tractors. The second one tested was biodegradable hydraulic fluid type ERTTO which could replace the toxic mineral oil. Both fluids were tested under the same test conditions using a special test device. The selected parameters of the hydrostatic pump were evaluated. The tests were evaluated according to the parameters describing the technical state of the hydrostatic pump as follows: flow efficiency, decrease of flow efficiency and cleanliness level of the fluid tested. This additional measurement verifies the test results. On the basis of the results achieved, we can state that the biodegradable hydraulic fluid exerts no harmful influence on the technical state of the hydrostatic pump. Therefore, the biodegradable fluid tested can be applied to the agricultural tractor. Has been demonstrated that the selected parameters are suitable for the evaluation of hydraulic fluid during its working performance. Therefore, these parameters will be used in the next examination of the fluid under operational conditions of an agricultural tractor.

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