LENGTH OF VEGETATIONAL PERIOD OF OAT SAMPLES WHEN GROWN IN THE SOUTHERN FLAT ZONE OF DAGESTAN

Abstract This is the first in a series of papers presenting the development of a comprehensive multiscale model with focus on fiber energy efficiency in thermo mechanical pulp processes. The fiber energy efficiency is related to the defibration and fibrillation work obtained when fibers and fiber bundles interact with the refining bars. The fiber energy efficiency differs from the total refining energy efficiency which includes the thermodynamical work as well. Extracting defibration and fibrillation work along the radius in the refining zone gives information valuable for fiber development studies.Models for this process must handle physical variables as well as machine specific parameters at different scales. To span the material and energy balances, spatial measurements from the refining zone must be available. In this paper, measurements of temperature profile and plate gaps from a full-scale CD-refiner are considered as model inputs together with a number of process variables. This enables the distributed consistency in the refining zone as well as the split of the total work between the flat zone and the CD-zone to be derived. As the temperature profile and the plate gap are available in the flat zone and the CD-zone at different process conditions it is also shown that the distributed pulp dynamic viscosity can be obtained. This is normally unknown in refining processes but certainly useful for all fluid dynamic models describing the bar-to-fiber interactions. Finally, it is shown that the inclusion of the machine parameters will be vital to get good estimates of the refining conditions and especially the split between the thermodynamical work and the defibration/fibrillation work.

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Tidal Flat Depositional System of the Cretaceous Yolde Formation of the Gongola Sub-basin Northern Benue trough N. E. Nigeria: Implication for Macro-Tidal Coastline

Journal of Geography Environment and Earth Science International ◽

10.9734/jgeesi/2020/v24i630233 ◽

2020 ◽

pp. 25-34

Author(s):

B. Shettima ◽

M. Bukar ◽

A. Kuku ◽

H. I. Kamale ◽

B. Shettima

Keyword(s):

Tidal Flat ◽

Facies Association ◽

Benue Trough ◽

Depositional System ◽

Lenticular Bedding ◽

Sandstone Facies ◽

Flat Zone ◽

Mudstone Facies

This research aims to evaluate the facies and facies association of the Yolde Formation at Kware stream in the Gongola Sub-basin of the Northern Benue Trough with objective of characterizing its paleodepositional environment. Six lithofacies consisting of trough crossbedded sandstone facies (St), massive bedded sandstone facies (Sm), planar crossbedded sandstone facies (Sp), ripple laminated sandstone facies (Sr), parallel sandstone facies (Sl) and mudstone facies (Fm) defining its stratal packages were skewed into distinctive assemblages of flaser, wavy and lenticular bedding. This present a fining upward signature with facies association typical of tidal flat system. This is evident of a coastal progradation with sequences reflecting migration of a supra-tidal mudflat over intertidal mixed-flat zone which progressively superposed subtidal sandflats. This is indicative of a coastal shoreline with a relatively progradational phase within the net transgressive regional framework of the Cretaceous Yolde Formation.

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The Flat Zone Approach and Color Images

Computational Imaging and Vision - Mathematical Morphology and Its Applications to Image Processing ◽

10.1007/978-94-011-1040-2_12 ◽

1994 ◽

pp. 85-92 ◽

Cited By ~ 13

Author(s):

José Crespo ◽

Ronald W. Schafer

Keyword(s):

Color Images ◽

Flat Zone

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TMP properties and refining conditions in a CD82 chip refiner. Part I: Step changes of process variables, description of the tests

Nordic Pulp & Paper Research Journal ◽

10.1515/npprj-2018-3002 ◽

2018 ◽

Vol 33 (1) ◽

pp. 69-81

Author(s):

Rita Ferritsius ◽

Olof Ferritsius ◽

Jan Hill ◽

Anders Karlström ◽

Karin Eriksson

Keyword(s):

Specific Energy Consumption ◽

Fibre Length ◽

Thermomechanical Pulp ◽

Process Variables ◽

Negative Effects ◽

Entropy Model ◽

Tensile Index ◽

Pulp Consistency ◽

Pulp Properties ◽

Flat Zone

Abstract The study explores how changes in process variables, residence time and pulp consistency in refining influence the pulp properties. The equipment utilized in this study was a conical disc chip refiner (RGP82CD) producing thermomechanical pulp (TMP). The focus was on the ratio between tensile index and specific energy consumption. Pulp properties were measured for composite pulp samples taken from the refiner blow line. Residence times and pulp consistencies were estimated by use of the extended entropy model. This showed that the CD-refiner, with the flat and conical refining zone, has a process performance similar to that of a two-stage refiner set-up, and that the consistency in both refining zones is of high importance. Comparing different periods revealed that even if the values of measured blow line consistency are similar, significant differences in the estimated consistency in the flat zone can prevail. Therefore, only monitoring blow line consistency is not enough. Specifically, it was found that the pulp consistency after the flat zone could be very high, considerably higher than in the blow line, and this could have negative effects on tensile index and fibre length.

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STABILITY OF OAT SAMPLES ON CHAFF SOILS WHEN GROWN IN THE SOUTHERN FLAT ZONE OF DAGESTAN

Daghestan GAU Proceeding ◽

10.15217/issn2686-7591.2019.2.105 ◽

2019 ◽

Vol 2 (2) ◽

pp. 105-110

Author(s):

E.T. AKHADOVA ◽

◽

U.K. KURKIEV ◽

Keyword(s):

Flat Zone

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Levelings and Flat Zone Morphology

2010 20th International Conference on Pattern Recognition ◽

10.1109/icpr.2010.388 ◽

2010 ◽

Cited By ~ 4

Author(s):

Fernand Meyer

Keyword(s):

Flat Zone

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Water Erosion and Sediment Transport in an Ungauged Semiarid Area: The Case of Hodna Basin in Algeria

10.1007/978-981-16-2904-4_17 ◽

2021 ◽

pp. 439-454

Author(s):

Omar Djoukbala ◽

Mahmoud Hasbaia ◽

Oussama Benselama ◽

Boutaghane Hamouda ◽

Salim Djerbouai ◽

...

Keyword(s):

Sediment Transport ◽

Sediment Yield ◽

Water Erosion ◽

Sediment Yields ◽

Alternative Approach ◽

Yield Values ◽

Gis Environment ◽

High Yields ◽

Basin Region ◽

Flat Zone

AbstractThis study aims to estimate the eroded and transported sediment yields from the The Hodna basin (26,000 km2) situated in central Algeria by two approaches. In the first model, the data of the gauged subbasins are extrapolated to the ungauged areas based on the homogeneity of factors that influence the water erosion-sediment transport process. In this approach, the specific eroded and transported sediment yield in the Hodna basin is estimated to be 425 t/km2/yr. In an alternative approach, the eroded yield is estimated by mapping erosion using the (RUSLE) in a GIS environment. The obtained results show a high eroded sediment yield of approximately 610 t/km2/yr.The observed difference between the results of the two approaches can be explained by the amount of sediment that is eroded but is not transported by runoff.These two methods show high eroded and transported sediment yield values in the Hodna basin region; these high yields may seriously threaten the central flat zone with progressive deposition.

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Variety and its quality in energy-saving tomato production technology

Agrarian Bulletin of the ◽

10.32417/1997-4868-2020-201-10-16-21 ◽

2020 ◽

Vol 201 (10) ◽

pp. 16-21

Author(s):

N. Velizhanov

Keyword(s):

Agricultural Research ◽

Evaluation Criteria ◽

Tomato Production ◽

The Republic ◽

Dietary Value ◽

High Yields ◽

The Cost ◽

Flat Zone

Abstract. In the 21st century, the share of the variety in the formation of the size and quality of the crop will increase from 20-40 to 70 % or more. It is obvious that the role of the variety increases significantly not only in increasing productive, but also medium-improving functions of agrophytocenosis, including soil-improving, phytosanitary, bioenergy, design – aesthetic, etc. A lot of attention is paid to the appearance, texture, taste properties of fruits, which increase their dietary value and overall attractiveness to buyers. Methods. The research was carried out at the experimental site of the Federal Agricultural Research Center of the Republic of Dagestan in 2017–2019. In production conditions, 12 widely used varieties of tomato have been tested in the seedling culture in recent years. The samples were studied using the ACIRO methodology and the State Crop Testing Methodology. Results. Promising varieties with high adaptability and stability in extreme conditions of the flat zone of the republic have been revealed. We have established morpho-anatomical and physiological changes in varieties of stamp forms, which determine their reduced, compared to the unstamable forms of resistance to drought, which significantly inhibit production processes in dry years. The most economic was the cultivation of varieties with high yields of standard fruits - Mariana, Mirage, F1 Andromeda. The cultivation of the Hussar variety cost 1.6 times more than F1 Andromeda. The cost of obtaining 1t standard harvest for other varieties was significantly higher. Scientific novelty is to study the sign of a reduction in the duration of the growing season in the combination of the size and yield of fruits on the biochemical composition, taste and technological, which is overcoming negative bonds, or to achieve a compromise combination. In the process of creating new ones and testing them, these evaluation criteria should be decisive.

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