Determination of optimum spatial arrangement of rice plants in direct seeding methods

2002 ◽  
Vol 50 (1) ◽  
pp. 35-42
Author(s):  
V. Anbumozhi ◽  
E. Yamaji ◽  
T. Tabuchi
Keyword(s):  
Spatial Arrangement ◽  
Direct Seeding ◽  
Rice Plants

Conformation of Ribosomes from Escherichia Coli

1974 ◽  
Vol 32 ◽  
pp. 210-211
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Binding Sites ◽  
Ribosomal Proteins ◽  
Fluorescent Dyes ◽  
Protein Biosynthesis ◽  
Three Dimensional ◽  
Spatial Arrangement ◽  
Dimensional Structure ◽  
Complete Understanding ◽  
And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

DETERMINATION OF ECONOMIC THRESHOLD LEVEL FOR CHILO AGAMEMNON BLES. INFESTATION IN RICE PLANTS, BASED ON SIMULATED DEAD HEARTS

2016 ◽  
Vol 94 (1) ◽  
pp. 59-69
Author(s):  
ALY M. SOLIMAN ◽  
AHMED S. HENDAWY ◽  
AMANY S. EL-HEFNY ◽  
MAHMOUD R. SHERIF
Keyword(s):  
Threshold Level ◽  
Economic Threshold ◽  
Rice Plants

scholarly journals Analysis of Microstructure Images Referred to Percolation Theory

2015 ◽  
Vol 15 (1) ◽  
pp. 109-112 ◽  
Author(s):  
W. Trzaskowski ◽  
W. Sobaszek ◽  
D. Myszka ◽  
S. Świłło
Keyword(s):  
Percolation Theory ◽  
Spatial Arrangement ◽  
Polycrystalline Materials ◽  
Practical Implementation ◽  
Material Structure ◽  
Two Phase ◽  
Modern Computer ◽  
Planar Images ◽  
Metallographic Image Analysis

Abstract The paper discusses possible applications of the percolation theory in analysis of the microstructure images of polycrystalline materials. Until now, practical use of this theory in metallographic studies has been an almost unprecedented practice. Observation of structures so intricate with the help of this tool is far from the current field of its application. Due to the complexity of the problem itself, modern computer programmes related with the image processing and analysis have been used. To enable practical implementation of the task previously established, an original software has been created. Based on cluster analysis, it is used for the determination of percolation phenomena in the examined materials. For comparative testing, two two-phase materials composed of phases of the same type (ADI matrix and duplex stainless steel) were chosen. Both materials have an austenitic - ferritic structure. The result of metallographic image analysis using a proprietary PERKOLACJA.EXE computer programme was the determination of the content of individual phases within the examined area and of the number of clusters formed by these phases. The outcome of the study is statistical information, which explains and helps in better understanding of the planar images and real spatial arrangement of the examined material structure. The results obtained are expected to assist future determination of the effect that the internal structure of two-phase materials may have on a relationship between the spatial structure and mechanical properties.

scholarly journals Flag Leaf Number Determination of Secondary and Tertiary Tillers and Heading Characteristics of Rice Plants.

1991 ◽  
Vol 60 (3) ◽  
pp. 434-440
Author(s):  
Akio MATSUZAKI ◽  
Tomomi NAKAMOTO ◽  
Hiroyasu MACHIDA
Keyword(s):  
Flag Leaf ◽  
Leaf Number ◽  
Rice Plants

scholarly journals Forms of Damage of Bricks Subjected to Cyclic Freezing and Thawing in Actual Conditions

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1165 ◽  
Author(s):  
Teresa Stryszewska ◽  
Stanisław Kańka
Keyword(s):  
Mineral Composition ◽  
Frost Resistance ◽  
Spatial Arrangement ◽  
Frost Damage ◽  
Small Samples ◽  
Macroscopic Description ◽  
Freezing And Thawing ◽  
Factors Affecting ◽  
Highly Correlated

The paper presents the characteristics of damage of bricks in masonry structures of significant historical value as a result of cyclic freezing and thawing. Based on extensive investigation, which included macroscopic description, determination of compressive strength and tensile strength, determination of the mineral composition, scanning microscopy observation and determination of the porosity structure of bricks, three forms of frost damage were distinguished, termed as powdering, flaking and cracking. Bricks were collected from existing historical buildings 70 years after their construction. It was observed that the particular form of frost damage of bricks is highly correlated with the structure of porosity. Additional factors affecting the form of frost destruction are the strength of the material, its mineral composition and the spatial arrangement of the texture elements. Taking the above into account, it is possible to evaluate frost resistance of bricks and specify the form of damage. Predicting frost resistance and forms of damage based on low-destructive methods using small samples is the expected solution in the case of heritage facilities.

Determination of the Roughness of CVD Surfaces by Laser Scattering

1991 ◽  
Vol 250 ◽  
Author(s):  
Max Klein ◽  
Bernard Gallois
Keyword(s):  
Scattered Light ◽  
Spatial Arrangement ◽  
Ex Situ ◽  
Root Mean Square Roughness ◽  
Statistical Parameters ◽  
Laser Scattering ◽  
Light Spectra ◽  
Good Agreement

AbstractA laser scattering apparatus was developed for the determination of surface roughness and other surface statistical parameters of chemically vapor-deposited coatings. Visual examination of HeNe laser scattering patterns reflected from polished sapphire and CVD titanium nitride surfaces showed a sensitivity to roughness differences of tens of nanometers. The scattering apparatus was integrated with a cold-wall CVD reactor. The root mean square roughness of silicon carbide deposits on silicon in the early stages of growth was determined from the intensity of the specularly reflected beam. Changes in roughness and the spatial arrangement of depositing crystallites were monitored in situ by angular resolution of the scattered light spectra. Both ex situ and in situ results were in good agreement with profilometric examinations of the rough surfaces.

scholarly journals Строение и морфология ледникового рельефа в бассейне р. Кица (Умбозерская)

2019 ◽  
Vol 16 ◽  
pp. 44-48
Author(s):  
А.А. Вашков ◽  
О.Ю. Носова ◽  
В.В. Колька ◽  
Д.С. Толстобров ◽  
Н.А. Костромина ◽  
...  
Keyword(s):  
Building Materials ◽  
Morphological Characteristics ◽  
Spatial Arrangement ◽  
Main Role ◽  
Dynamic Features ◽  
The North ◽  
Different Types ◽  
Glacial Cover ◽  
The Last Glacial

In the article the issues of composition and morphology of accumulative relief in the central part of the Kola region are considered. The main role in composition of the glacial forms is determined to belong to squamous, diapir and folded laciodislocations. Regularities of spatial arrangement and morphological characteristics of the relief forms, which correspond to glaciodislocations of different types, have been defined. It is concluded that three rows of marginal formations corresponding to individual retreat stages of the last glacial cover in the Late Pleistocene were developed on the studied area. Obtained data are important to determination of dynamic features of the north sector of the White Sea Ice Stream. Moreover, they may be used as criteria to prediction of mineral-building materials. В статье рассмотрены вопросы строения и морфологии аккумулятивного рельефа в центральной части Кольского региона. Установлена ведущая роль чешуйчатых, диапировых и складчатых гляциодислокаций в строении форм ледникового генезиса. Определены закономерности пространственного расположения и морфологические характеристики форм рельефа, соответствующие гляциодислокациям разного типа. Сделан вывод о развитии в районе работ трех цепочек краевых образований, соответствующих отдельным фазам деградации последнего ледникового покрова в позднем плейстоцене. Полученные данные имеют большое значение для установления особенностей динамики северного сектора беломорского ледникового потока, а также могут быть использованы в виде критериев прогнозирования минерально-строительного сырья.

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