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Wyświetlanie 1-15 z 34
Tytuł:
An analytical study on buckling behavior of CNT/polymer composite plates using the first order shear deformation theory
Autorzy:
Peyyala, P. K.
Subba Rao, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/281618.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
buckling
carbon nanotube
composite plates
micromechanics
FSDT
Opis:
Most plates used in engineering structures such as aircraft wings, ship ducts and buildings, although quite capable of resisting tensile loads, are poor in withstanding compression. In order to avoid premature failure under compression, it is important to know buckling behavior of the plate. This article primarily deals with the analytical study of buckling behavior of a carbon nanotube reinforcing polymer composite plates based on the first order shear deformation theory by employing Mori-Tanaka micromechanics approach to obtain elastic properties. In this investigation, an attempt is made for evaluating the effect of plate thickness, CNT volume fraction, stacking sequence and CNT radii on the buckling of plates.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 1; 71-79
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exotic floristic composition of Peddagattu, the proposed site for Uranium mining, Nalgonda district, Telangana state, India
Autorzy:
Reddy, A.B.
Rao, V.H.
rao, V.V.
Reddy, A.V.B.
Powiązania:
https://bibliotekanauki.pl/articles/11325.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The present investigation reflects the findings of exotic floristic composition at Peddagattu, Nalgonda district, Telangana State, India. A total of 125 exotic species of taxa belonging to 101 genera and 44 families were recorded in the study. Leguminosae is the most dominant family representing with 21 species, followed by Compositae (14 species), Apocynaceae, Convolvulaceae and Poaceae (7 species each). As per the nativity of exotic species representation in the study area are mostly from belongs to tropical America followed by tropical Africa and South America at Peddagattu.
Źródło:
International Letters of Natural Sciences; 2015, 43
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Borel structures
Autorzy:
Rao, B. V.
Powiązania:
https://bibliotekanauki.pl/articles/725610.pdf
Data publikacji:
1970
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1970, 21, 2; 199-204
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on vector sums of Borel sets
Autorzy:
Rao, B. V.
Powiązania:
https://bibliotekanauki.pl/articles/725462.pdf
Data publikacji:
1972
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1972, 25, 1; 103-104
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Borel structures for function spaces
Autorzy:
Rao, B. V.
Powiązania:
https://bibliotekanauki.pl/articles/727624.pdf
Data publikacji:
1971
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1971, 23, 1; 33-38
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lattice of Borel structures
Autorzy:
Rao, B. V.
Powiązania:
https://bibliotekanauki.pl/articles/727900.pdf
Data publikacji:
1971
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1971, 23, 2; 213-216
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved Estimators of Coefficient of Variation in a Finite Population
Autorzy:
Archana, V.
Aruna Rao, K.
Powiązania:
https://bibliotekanauki.pl/articles/465691.pdf
Data publikacji:
2011
Wydawca:
Główny Urząd Statystyczny
Tematy:
Model based comparison
Coefficient of Variation
Simple Random Sampling Regression estimator
Mean Square Error
Confidence interval
Opis:
Coefficient of Variation (C.V) is a unitless measure of dispersion. Hence it is widely used in many scientific and social investigations. Although a lot of work has been done concerning C.V in the infinite population models, it has been neglected in the finite populations. Many areas of applications of C.V involves the finite populations like the use in official statistics and economic surveys of the World Bank. This has motivated us to propose six new estimators of the population C.V. In finite population studies regression estimators are widely used and the idea is exploited to propose the new estimators. Three of the proposed estimators are the regression estimators of the C.V for the study variable while the other three estimators makes use of the regression estimators of population mean and variance to estimate the ratio , the population C.V for the study variable. The bias and mean square error (MSE) of these estimators were derived for the simple random sampling design. The performance of these estimators is compared using two real life data sets. The simulation is carried out to compare the estimators in terms of coverage probability and the length of the confidence interval. The small sample comparison indicates that two of the proposed estimators perform better than the sample C.V. The regression estimator using the information on the Population C.V of the auxiliary variable emerges as the best estimator.
Źródło:
Statistics in Transition new series; 2011, 12, 2; 357-380
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors affecting the mechanical properties of compact bone and miniature specimen test techniques: a review
Autorzy:
Chittibabu, V.
Rao, S. K.
Rao, G. P.
Powiązania:
https://bibliotekanauki.pl/articles/103085.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mechanical properties
compact bone
miniature specimen
small punch test
finite element simulation
inverse finite element procedure
Opis:
This paper presents the review concerning mechanical properties of bone and the miniature specimen test techniques. For developing a realistic understanding of how factors such as moisture content, mineralization, age, species, location, gender, rate of deformation etc. affect the mechanical properties of bone, it is critical to understand the role of these factors. A general survey on existing research work is presented on this aspect. The essential features of miniature specimen test techniques are described, along with the application of small punch test method to evaluate the mechanical behavior of materials. The procedure for the determination of tensile and fracture properties, such as: yield strength, ultimate strength, ductility, fracture toughness etc. using small punch test technique have been described. The empirical equations proposed by various investigators for the prediction of tensile and fracture properties are presented and discussed. In some cases, the predictions of material properties have been essentially made through the finite element simulation. The finite element simulation of miniature specimen test technique is also covered in this review. The use of inverse finite element procedure for the prediction of uniaxial tensile constitutive behaviour of materials is also presented.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 169-183
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytosociological studies on tree species of Peddagattu and Sherepally area, a proposed site for Uranium mining project, Nalgonda district, Telangana State, India
Autorzy:
Baleeshwar Reddy, A.
Hanumantha Rao, V.
Vasudeva Rao, V.
Vijava Bhasker Reddy, A.
Powiązania:
https://bibliotekanauki.pl/articles/11106.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The present study deals with the quantitative floristic inventory of Peddagattu and Sherepally area, Nalgonda district, Telangana State, India. The study resulted in documentation of 50 tree species belongs to 41 genera and 35 families. The families, Mimosaceae, Caesalpiniaceae and Fabaceae are dominated. Among the tree species Cassia fistula has showed highest IVI in Peddagattu, while in Sherepally Albizia amara has recorded highest IVI. Shannon–Wiener index (H') ranges from 2.41 to 3.03. The present study can serve as baseline information for phytosociolgical studies on tree species of Peddagattu and Sherepally area, a proposed site for Uranium mining project, Nalgonda district, Telangan State, India.
Źródło:
International Letters of Natural Sciences; 2016, 50
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Value addition to Pongamia biodiesel industry through bioethanol production from pressed oil cake using Bacillus cereus
Autorzy:
Venkatesh, K.H.
Rao, V.C.
Powiązania:
https://bibliotekanauki.pl/articles/2096993.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pongamia pinnata
oil cake hydrolysate
bioethanol
Bacillus cereus
value addition
Opis:
Pongamia pinnata, a tree bearing oil seeds, has been one of the prime focus among nonedible oil sources for biodiesel production in most parts of India. The oil cake obtained after the extraction of oil serves as an adequate source of cellulose, hemicellulose, proteins, lipids, and starch. The scarce literature data available suggest very low conversion rate of complex sugars to fermentable sugars and further to bioethanol. In the present work, a sulfuric acid hydrolysate obtained from Pongamia oil cake (POC) under microwave irradiation was anaerobically fermented using Bacillus cereus ATCC 14579. Under anaerobic and acidic conditions, the process parameters affecting the bioethanol production efficiency (BPE) were screened and optimized using statistical experimental designs. Of the seven parameters screened (glucose concentration, yeast extract as nitrogen source, agitation speed, pH, inoculum size, fermentation time, and temperature), only 3 were found to be significant and to increase BPE. The significant parameters were optimized using the Box-Behnken experimental design to obtain an optimal condition of 9 g/l reducing sugars, pH 4.6 maintained with acetate buffer, and fermentation period of 51 h that yielded 92% BPE with 4.2 g/l ethanol. Moreover, it was observed that the use of a buffer system to maintain broth pH, especially acetate buffer, significantly improved BPE. Low concentration of fermentation inhibitors is the key factor for improved BPE. The research outcome suggests that the production of dual fuel from Pongamia pinnata, viz. biodiesel and bioethanol, could not only improve the process economics but also reduce waste generation.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 2; 147-158
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 34

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