Wszystkie pola: Sharma, R.

Skocz do pozycji: 1.

Tytuł:: Unsteady flow of an elastic-viscous fluid past an infinite porous plate
Autorzy:: Sharma, R.S.
Wydawca:: Polish Scientific Publishers IFTR
Powiązania:: Archives of Mechanics
Opis:: Od Vol. 53, issue 4/5 (2001) wyd: PAS. IFTR
Od Vol. 43, issue 1 (1991) wyd.: Polish Scientific Publishers = PWN
149-300 pages ; 24 cm
Od Vol. 50, issue 4 (1998) wyd.: Agencja Reklamowo-Wydawnicza A. Grzegorczyk
149-300 stron ; 24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 2.

Tytuł:: Flow over an oscillating porous plate
Autorzy:: Sharma, R.S.
Wydawca:: Polish Scientific Publishers IFTR
Powiązania:: Archives of Mechanics
Opis:: Od Vol. 53, issue 4/5 (2001) wyd: PAS. IFTR
1-228 stron ; 24 cm
Od Vol. 43, issue 1 (1991) wyd.: Polish Scientific Publishers = PWN
1-228 pages ; 24 cm
Od Vol. 50, issue 4 (1998) wyd.: Agencja Reklamowo-Wydawnicza A. Grzegorczyk
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 3.

Tytuł:: Drag reduction of an oscillating flat place with an interface film
Autorzy:: Sharma, R.S.
Wydawca:: Polish Scientific Publishers IFTR
Powiązania:: Archives of Mechanics
Opis:: Od Vol. 53, issue 4/5 (2001) wyd: PAS. IFTR
445-592 stron ; 24 cm
445-592 pages ; 24 cm
Od Vol. 43, issue 1 (1991) wyd.: Polish Scientific Publishers = PWN
Od Vol. 50, issue 4 (1998) wyd.: Agencja Reklamowo-Wydawnicza A. Grzegorczyk
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 4.

Tytuł:: Design and analytical calculations of the width and arrangement of quantum well and barrier layers in GaN/AlGaN LED to enhance the performance
Autorzy:: Sharma, L.
Sharma, R.
Tematy:: barrier
multi quantum well
light emitting diode
power efficiency
quantum well; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2063882.pdf Link otwiera się w nowym oknie
Opis:: This research paper discusses an analytical approach to designing the active region of light emitting diodes to enhance its performance. The layers in the active region were modified and the effects of changing the width of quantum well and barrier layers in a multi-quantum light emitting diode on the output power and efficiency have been investigated. Also, the ratio of the quantum well width to the B layer width was calculated and proposed in this research paper. The study is carried out on two different LED structures. In the first case (i.e., first structure), the width of the quantum well layers is kept constant while the width of the B layers is varied. In the second case (i.e., second structure), both the quantum well and B layer widths are varied. Based on the simulation results, it has been observed that the LED power efficiency increases considerably for a given quantum well to B layers width ratio without increasing the production complexity. It is also seen that for a desired power efficiency the width of quantum well should be between 0.003 μm and 0.006 μm, and the range of B width (height) should be 2.2 to 6 times the quantum well width. The proposed study is carried out on the GaN-AlGaN-based multi-quantum well LED structure, but this study can be extended to multiple combinations of the semiconductor structures.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: Work-Related Musculoskeletal Disorders, Job Stressors and Gender Responses in Foundry Industry
Autorzy:: Sharma, R.
Singh, R.
Tematy:: job stressors
gender differences
MSDs
foundry workers
Likert scale
stresory
różnice płci
zaburzenia układu mięśniowo-szkieletowego
przemysł odlewniczy; Pokaż więcej
Wydawca:: Centralny Instytut Ochrony Pracy
Powiązania:: https://bibliotekanauki.pl/articles/90135.pdf Link otwiera się w nowym oknie
Opis:: The main aim of this paper was to identify job stressors, gender responses and association of psychosocial work stressors with prevalence of work related musculoskeletal disorders (MSDs) among foundry workers. The data were obtained with ergonomics checklist using Likert scale. The results of this study showed a high prevalence of MSDs among workers. The male workers were more prone to pain in neck while the female workers were more prone to MSDs in upper back and shoulders. Correlation analysis showed significant relationship of dimensions of work aspects with pain and discomfort. It proved that the work-related MSDs are the results of interaction of multiple stressors associated with work and work environment, and other personal factors. ANOVA indicated that the perception of work aspects as stressors differed significantly between male and female workers.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Turnover of cell wall components during sink development in seeds of three cotton genotypes
Autorzy:: Sharma, R.K.
Thaker, V.S.
Tematy:: Cotton seeds
Gossypium Pectic substances
Sink size
Water amount
Xyloglucans; Pokaż więcej
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Powiązania:: https://bibliotekanauki.pl/articles/2199019.pdf Link otwiera się w nowym oknie
Opis:: Size of the cells in developing seed is one of the major factors that regulate yield potentials. Seed of three cotton genotypes, Gossypium hirsutum. L cv (H-4; H-8) G. herbaceum L. cv (G. Cot-15) exhibits variation in their final seed size (large, middle and smaller) were studied for growth and changes in cell wall components during entire period of seed development. High and low molecular weight xyloglucan contents were extracted with 1M and 4M alkali, respectively. Initially the high and low molecular weight xyloglucan contents remained low and increased when cell size stabilized. Changes in esterified and non-esterified pectic substances were also fractionated from the cell wall of developing seed and theirs role in cell elongation phase is discussed. It was observed that bigger seed has higher xyloglucan contents than that of middle and smaller sized seed. Pectic substances were higher during elongation phase in all genotypes. The role of these polysaccharides in sink size development is discussed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Axisymmetric vibration for micropolar porous thermoelastic circular plate
Autorzy:: Kumar, R.
Kaushal, P.
Sharma, R.
Tematy:: micropolar porous thermoelasticity
eigen value
Laplace and Hankel transforms
thermomechanical sources
porowatość termoelastyczna
transformata Laplace'a
transformata Hankela; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/266270.pdf Link otwiera się w nowym oknie
Opis:: The present investigation is concerned with a two dimensional axisymmetric problem in a homogeneous isotropic micropolar porous thermoelastic circular plate by using the eigen value approach. The Laplace and Hankel transform are used to solve the problem. The expression of displacements, microrotation, volume fraction field, temperature distribution and stresses are obtained in the transformed domain subjected to thermomechanical sources. A computer algorithm is developed for numerical computations. To obtain the resulting quantities in a physical domain, a numerical inversion technique is used. The resulting quantities are depicted graphically for a specific model. Some special cases are also deduced.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Evaluation of sustainable nutrient management practices based on land degradation and rainfall effects on soybean yield and organic carbon and available N content in rainfed vertisols
Autorzy:: Sharma, R.A.
Raghu, J.S.
Tematy:: sustainable practice
nutrient management
land degradation
rainfall effect
soybean
yield
organic carbon
nitrogen content
phosphorus
soil
Vertisol; Pokaż więcej
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Powiązania:: https://bibliotekanauki.pl/articles/9195901.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Numerical study on the effects of multiple internal diathermal obstructions on natural convection in a fluid-saturated porous enclosure
Autorzy:: Chordiya, J. S.
Sharma, R. V.
Tematy:: thermal insulation
natural convection
internal obstructions
porous enclosure
Darcy's law
izolacja termiczna
konwekcja naturalna
przeszkody wewnętrzne
obudowa porowata
prawo Darcy'ego; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/139520.pdf Link otwiera się w nowym oknie
Opis:: The present work aims at studying the effects of orientation, size, position, and the combination of multiple internal diathermal obstructions in a fluid-saturated square porous enclosure, generally encountered in thermal insulations. The overall objective is to suppress the natural convection fluid flow and heat transfer across a differentially heated porous enclosure. To serve this purpose, multiple diathermal obstructions are employed to mechanically protrude into a porous medium. It is sought to estimate the effect of various types of orientation, clustering and alternate positioning of obstructions by considering number of obstructions (Np), length of obstructions (λ), modified Rayleigh number (Ra*) on local and average Nusselt number (Nu). The Darcy model for porous media is solved using Finite difference method along with Successive Accelerated Replacement scheme. One of the findings is that the value of the Nusselt number decreases by increasing both, the number of obstructions as well as the length of obstructions irrespective of its orientation and positioning. The reduction in Nusselt number is significant with obstructions attached on lower half of the hot wall and/or on upper half of cold wall. In addition, the overall reduction in Nusselt number is slightly greater with obstructions attached explicitly to the cold wall.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Turnover of cell wall components during sink development in seeds of three cotton genotypes
Autorzy:: Sharma, R.K.
Thaker, V.S.
Tematy:: Cotton seeds
Gossypium Pectic substances
Sink size
Water amount
Xyloglucans; Pokaż więcej
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Powiązania:: https://bibliotekanauki.pl/articles/55928550.pdf Link otwiera się w nowym oknie
Opis:: Size of the cells in developing seed is one of the major factors that regulate yield potentials. Seed of three cotton genotypes, Gossypium hirsutum. L cv (H-4; H-8) G. herbaceum L. cv (G. Cot-15) exhibits variation in their final seed size (large, middle and smaller) were studied for growth and changes in cell wall components during entire period of seed development. High and low molecular weight xyloglucan contents were extracted with 1M and 4M alkali, respectively. Initially the high and low molecular weight xyloglucan contents remained low and increased when cell size stabilized. Changes in esterified and non-esterified pectic substances were also fractionated from the cell wall of developing seed and theirs role in cell elongation phase is discussed. It was observed that bigger seed has higher xyloglucan contents than that of middle and smaller sized seed. Pectic substances were higher during elongation phase in all genotypes. The role of these polysaccharides in sink size development is discussed.
Dostawca treści:: Biblioteka Nauki

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