Sensor system development for low-damage sugar beet harvesting – state and perspectives

Sugar Industry ◽

10.36961/si24377 ◽

2020 ◽

pp. 299-306

Author(s):

Ulrike Wilczek ◽

Boris Kulig ◽

Heinz-Josef Koch ◽

Roman Kälberloh ◽

Oliver Hensel

Keyword(s):

High Speed ◽

Field Experiments ◽

System Development ◽

Pressure Sensors ◽

Sensor System ◽

Root Tip ◽

Frequency Spectra ◽

Long Term Storage ◽

Term Storage

The SmartBeet project aimed to develop a sensor system feasible to detect beet damages occurring in the harvester cleaning system. Sensor information should allow to design driver assistance systems safeguarding low-damage beets most suitable for long-term storage. Long-term storage trials in climate containers revealed that root tip breakage caused by turbine cleaning correlated sufficiently close with sugar losses, and thus can serve as an overall damage indicator. In a systematic drop test, heavier beets (>700 g), beets impacting the ground with the root tip ahead and dropping from 2.5 m caused largest tip breakage. Field experiments were conducted with measuring bobs which were shaped like beets and equipped with accelerometers and surface pressure sensors. They showed that type and form of impacts affect damage severity in addition to impact intensity. Moreover, the turbines exerted less impact compared to the lifter, sieve conveyor and auger conveyor. Results imply that the beet throughput level through the cleaning section significantly affects the occurrence of damages. In addition, the structure-borne sound of the beet guiding grates of the turbines was recorded. Single beet damage events were identified from videos taken by high speed cameras and synchronized with the associated sound frequency spectra. In future, time segments and synchronized Fast-Fourier-transformed frequency spectra will be used to derive specific trait variables in order to develop a Machine-Learning-Model.

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Chlorogenic acid content in potato tubers with colored flesh as affected by a genotype, location and long-term storage

Plant Soil and Environment ◽

10.17221/195/2019-pse ◽

2019 ◽

Vol 65 (No. 7) ◽

pp. 355-360

Author(s):

Matyáš Orsák ◽

Karel Hamouz ◽

Jaromír Lachman ◽

Pavel Kasal

Keyword(s):

Chlorogenic Acid ◽

Acid Content ◽

Field Experiments ◽

The Other ◽

Potato Tubers ◽

Flesh Color ◽

Long Term Storage ◽

And Storage ◽

Term Storage

In three-year field experiments, the effect of genotype, flesh color, site conditions and storage on chlorogenic acid content (CAC) in tubers of potato cultivars with purple or red flesh was compared to yellow-fleshed cv. Agria. The results confirmed the significant effect of genotype on CAC. The highest CAC was characteristic on a three-year mean for the purple-fleshed cv. Vitelotte (769.5 mg/kg fresh weight (FW)), i.e. 1.19−2.6 times higher than in the other cultivars. In regard to the effect of flesh color, significantly higher mean CAC levels have been shown for the red-fleshed (2.8 times) and purple-fleshed (3.16 times) cultivars in comparison with cv. Agria (148 mg/kg FW). At the Uhříněves location with a warmer climate and frequent dry periods as compared to the second Valečov location, a higher CAC (1.18 times) was found. Cold storage (4°C, 6 months) resulted in a significant CAC increase varying from 33.2% in the Blaue St. Galler cultivar to 210.6% in the Vitelotte cultivar among all eight evaluated color-fleshed cultivars. On the other hand, the effect of storage on CAC was not evident in the yellow-fleshed Agria cultivar (inconclusive difference against CAC after harvest).

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Control of Advanced Fodder Disinfection in Terms of Economic Criteria

Advances in Environmental Engineering and Green Technologies - Advanced Agro-Engineering Technologies for Rural Business Development ◽

10.4018/978-1-5225-7573-3.ch016 ◽

2019 ◽

pp. 431-439

Author(s):

Alexandr Dubrovin

Keyword(s):

High Speed ◽

Energy Use ◽

Electric Heating ◽

Excessive Pressure ◽

Long Term Storage ◽

Current Context ◽

Integrated Cost ◽

Livestock Productivity ◽

Term Storage

Upon long-term storage, germinated grain with 50-60% humidity begins to mold and rot. Therefore, it should be fed off to livestock as soon as possible after its germination. To extend storage life of germinated grain, it is necessary either to dry it to 14% relative humidity, or to carry out its disinfection. Grain forms the basis of combined fodder in agriculture. Some technological solutions are available to provide fodder disinfection optimized in technological or economic terms, as well as rational energy use, including disinfection by high-speed electron bunches, ultra-high frequency electric waves, combined IR and conductive (contact) electric heating, and toxic ozone gas. There also exists a similar solution for fodder premises disinfection through controlling excessive pressure of their internal air. In control by technological (production) criterion, the mode of minimal integrated cost of calculated loss of quality (expenditures) of products being disinfected (fodder) is determined, so the highest livestock productivity in the current context is obtained.

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Dehydration improves biomechanical strength of bioartificial vascular graft material and allows its long-term storage

Innovative Surgical Sciences ◽

10.1515/iss-2018-0017 ◽

2018 ◽

Vol 3 (3) ◽

pp. 215-224 ◽

Cited By ~ 2

Author(s):

Thomas Aper ◽

Mathias Wilhelmi ◽

Ulrike Boer ◽

Skadi Lau ◽

Nils Benecke ◽

...

Keyword(s):

High Speed ◽

Biomechanical Properties ◽

Dehydration Process ◽

Fibrin Matrix ◽

Long Term Storage ◽

High Speed Rotation ◽

Speed Rotation ◽

Biomechanical Strength ◽

Term Storage

AbstractIntroductionWe have recently reported about a novel technique for the generation of bioartificial vascular grafts based on the use of a compacted fibrin matrix. In this study, we evaluated the effects of a dehydration process on the biomechanical properties of compacted fibrin tubes and whether it allows for their long-term storage.Materials and methodsFibrin was precipitated from fresh frozen plasma by means of cryoprecipitation and simultaneously with a thrombin solution applied in a high-speed rotating casting mold. Subsequent dehydration of the fibrin tubes (29/38) was performed in dry air with a dilator inside the tube to prevent the collapse of the lumen. Dehydrated fibrin tubes were stored for six (n=9) and 12 months (n=10) at room temperature. Comparative analysis was done on initially generated and dehydrated fibrin tubes before and after storage to evaluate the effects of the dehydration process and storage on the biomechanical properties and structure of the tubes.ResultsThirty-eight fibrin tubes were generated by high-speed rotation-molding from 142±3 mg fibrinogen with an inner diameter of 5.8±0.1 mm and a length of 100 mm. A centrifugal force of nearly 900×g compacted applied fibrin, while fluid was pressed out of the matrix and drained from the mold via holes resulting in a 16-fold compaction of the fibrin matrix. Dehydration was characterized by shrinkage of the tubes to a diameter of 3.2±0.2 mm, while the length remained at 100 mm equivalent to a further two-fold compaction. The biomechanical strength of the dehydrated fibrin tubes significantly increased to values comparable to that of native ovine carotid arteries and maintained during the first 6 months of storage. After 12 months of storage, only five of 10 tubes were intact, and only one showed maintained biomechanical strength.DiscussionCompaction of a fibrin matrix in high-speed rotation-moulding and subsequent dehydration enables for the construction of small-caliber fibrin grafts. Over and above, the dehydration process allows their storage and stockpiling as a prerequisite for clinical use.

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Modelling of Moisture Movement in Wood during Outdoor Storage

Nonlinear Analysis Modelling and Control ◽

10.15388/na.2001.6.1.15210 ◽

2001 ◽

Vol 6 (2) ◽

pp. 3-14 ◽

Cited By ~ 23

Author(s):

R. Baronas ◽

F. Ivanauskas ◽

I. Juodeikienė ◽

A. Kajalavičius

Keyword(s):

Experimental Data ◽

Finite Difference ◽

Climatic Conditions ◽

Two Dimensional ◽

Moisture Movement ◽

Finite Difference Technique ◽

Long Term Storage ◽

Space Formulation ◽

Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

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