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Tytuł:
Phylogenetic inference of Ericales based on plastid genomes and implication of cp-SSRs
Autorzy:
Hazra, A.
Das, S.
Bhattacharya, S.
Sur, S
Sengupta, C.
Powiązania:
https://bibliotekanauki.pl/articles/2096423.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chloroplast genome
Ericales
phylogeny
simple sequence repeats
species tree
Opis:
Ericales is an ancient eudicot order encompassing numerous species of economic and ornamental values. Despite several phylogenomic studies, the evolutionary relationship among certain families of this group remains uncertain. The present study assessed a multilocus species tree of Ericales based on 107 chloroplast genomes. The plastome derived microsatellite motifs were also simultaneously explored to check their dynamicity in corroboration of species phylogeny and systematics. In addition to resolving the usual hierarchy, the present phylogenetic analysis enabled to resolve the persisting lineage disparity with valid statistical support. Accordingly, divergence incongruences of Primulaceae, Ebenaceae, and Sapotaceae from earlier reports were reinstated in presently inferred phylogeny, which further supported the latest transcriptome-based relationship of the corresponding group. Various SSR motif characteristics emerged following the recognition of the evolutionary pathway. Numerical variation in tetranucleotide repeats showed even intraspecific or varietal differences in Camellia sinensis. Validation of plastome microsatellite-based polymorphism among the related taxa might pave the way for future phylogenetic and population studies of this economically important group.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 277-283
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of current research trends on graphene and it’s applications
Autorzy:
Krishna, R. S.
Mishra, Jyotirmoy
Das, Shaswat Kumar
Mustakim, Syed Mohammed
Powiązania:
https://bibliotekanauki.pl/articles/1068613.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Concrete
Doping
Electrical
Graphene
Material
Mechanical
Properties
Sustainability
Opis:
Graphene is no doubt called a wonder-material due to its outstanding superlative traits. It has its application near about in every field. Its properties are extraordinary and different from any day-to-day material. Albeit bearing such qualities, its structure is rather simple than most individuals cerebrate of. It has a thickness of an atom. It is a two-dimensional carbon arranged in a honeycomb crystal structure. It could transmute the way we view, in numerous fields of science. Its applications can be an asset to a greener environment for which Graphene engineered cement/concrete composites have an immense potential in the present times when sustainable construction materials are the need of the hour. Graphene can act as a good adsorbent for pollutant abstraction due to its high surface area. Either alone or in coalescence with different materials, it very well may be used for the debasement or deliberation of a sizably voluminous assortment of contaminants through a few strategies. Incipient heights can be achieved as the list of operations for graphene is virtually illimitable. Utilization of graphene in the coming years will give inundating difference to current technologies. This paper fixates on the applications and developments of Graphene in fields like Electronics, Batteries, Filtration, Medicine, Construction, and Composites.
Źródło:
World Scientific News; 2019, 132; 206-219
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Breeding and agronomic approaches for the biofortification of zinc in wheat (Triticum aestivum L.) to combat zinc deficiency in millions of a population: a Bangladesh perspective
Biofortyfikacja pszenicy (Triticum aestivum L.) cynkiem w celu ograniczenia niedoboru cynku w populacji: perspektywa Bangladeszu
Autorzy:
Das, S.
Chaki, A.K.
Hossain, A.
Powiązania:
https://bibliotekanauki.pl/articles/27742.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
The World Health Organization (WHO) has estimated that around 2 billion people across the globe are suffering from “hidden hunger”, where 815 million are under malnutrition. The major essential elements for humans are Fe, Zn, I, Se, Ca, F, and also vitamins. Among them, Zn is considered in the fifth place leading to causes of several deficiency diseases. At least one-third of the population in the world is facing Zn deficiency including around 450,000 children under the age of five. Vitamin A, Fe, and Zn deficiencies can be overcome through the biofortification of staple foodstuffs. This review emphasizes various breeding and agronomic approaches for the biofortification of Zn in wheat grains, which is an encouraging and cost-effective method to enhance the Zn contents of cereal grains. Recently, the Bangladesh Wheat and Maize Research Institute (BWMRI), with technical support from CIMMYT, Mexico, released a promising new Zn-biofortified wheat cultivar, ‘BARI Gom 33’, a result from a conventional breeding program. It has 32 and 50–55 mg kg−1 Zn without and with soil application of ZnSO4, respectively. This cultivar could be a savior for a million people in South Asia, including Bangladesh.
WHO (Światowa Organizacja Zdrowia) oceniła, że około 2 miliardy ludzi na całym świecie cierpi z powodu „ukrytego głodu”, podczas gdy 815 milionów cierpi z powodu niedożywienia. Głównymi pierwiastkami niezbędnymi w diecie dla człowieka są Fe, Zn, J, Se, Ca, F oraz witaminy. Cynk zajmuje 5 miejsce pod względem deficytu w pożywieniu, a jego niedobory prowadzą do wielu groźnych chorób. Co najmniej jedna trzecia populacji na świecie wykazuje objawy niedoboru Zn, w tym około 450000 dzieci poniżej piątego roku życia. Niedobory witaminy A, Fe i Zn można niwelować poprzez biofortyfikację podstawowych artykułów spożywczych. Niniejsza praca przeglądowa podkreśla różne podejścia hodowlane i agronomiczne do biofortyfikacji Zn w ziarniakach pszenicy, co może stanowić zachęcające i opłacalne narzędzie służące zwiększaniu zawartości Zn. Niedawno Bangladeski Instytut Badań Pszenicy i Kukurydzy (BWMRI), przy wsparciu technicznym Międzynarodowego Centrum Ulepszania Kukurydzy i Pszenicy (CIM-MYT) w Meksyku, przekazał nową, wzbogaconą w Zn odmianę biofortyfikowanej pszenicy ‘BARI Gom 33’ uzyskaną w ramach konwencjonalnego programu hodowlanego. Zawartość Zn w ziarniakach wynosi odpowiednio 32,09 i 50–55 μg L−1 Zn bez nawożenia i po doglebowym nawożeniu ZnSO4. Ta odmiana może uratować przed niedożywieniem milion ludzi w Azji Południowej, w tym w Bangladeszu.
Źródło:
Acta Agrobotanica; 2019, 72, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In-situ formed, ultrafine Al-Si composite materials: ductility
Autorzy:
Guba, P.
Gesing, A.
Sokolowski, J.
Conle, A.
Sobiesiak, A.
Das, S.
Kasprzak, M.
Powiązania:
https://bibliotekanauki.pl/articles/366887.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
ultrafine Al-Si composite
Al metal matrix
hypereutectic Al alloys
mechanical properties
high ductility
osnowa metalowa
stop nadeutektyczny
właściwości mechaniczne
ciągliwość
Opis:
Purpose: The work objective includes optimization of the casting production and heat treatment processes that will simultaneously maximize the combination of strength, hardness, and ductility for hypereutectic Al-Si compositions with Si volume fractions of as much as 25 vol.%. In addition, such an in-situ formed composite alloy will attain a unique combination of low production cost, high potential recycled content, and functional characteristics suitable for mission critical aerospace and vehicular applications. Design/methodology/approach: The unique High Pressure Die Casting Universal Metallurgical Simulator and Analyser (HPDC UMSA) was used for melting, cyclic melt treatment, and solidification of the hypereutectic Al-Si-X (A390). The produced as-cast structures contained colonies of nano-diameter Si whiskers and other morphologies, and absence of primary silicon particles. Heat treated structures rendered nano and ultrafine metal matrix composites. Findings: New developed as-cast Al-Si materials containing nano-diameter Si whiskers, without primary silicon particles required ultra short time heat treatment to result in nano and ultrafine metal matrix composite, rendering their hardness, strength and wear resistance, and the same time retaining toughness and ductility. Research limitations/implications: The cast samples were produced in laboratory conditions and potential tensile strength was estimated from empirical correlation with micro-hardness measurements. In the future, the comprehensive mechanical properties need to be tested. Practical implications: These ultrafine Si, Al-MMCs can be net-shape formed by modified HPDC technology or consolidated from spray-atomized alloy powder. Originality/value: Optimization of the entire production process for the hypereutectic Al-Si alloy compositions achieved a uniform distribution of ~ 25 vol.% of ultrafine Si particles in ductile FCC-Al matrix further reinforced by age hardening with nano-scale spinodal GP-zones. The associated mechanical property and ductility improvements will open a wide range of critical lightweighting components in transportation: aerospace, terrestrial vehicle and marine to the optimized hypereutectic Al-Si alloys. Presently, these components do not use the commercial HPDC A390 alloys due to their limited ductility and strength. Proposed new technology will allow conversion of various cast airspace alloys with ultrahigh mechanical properties to the automotive applications.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2019, 92, 1-2; 5-12
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MIPS sequences: a promising molecular consideration in angiosperm phylogeny and systematics
Autorzy:
Hazra, A.
Nandy, P.
Sengupta, C.
Das, S.
Powiązania:
https://bibliotekanauki.pl/articles/80785.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
myo-inositol-1-phosphate synthase
protein sequence
angiosperm
phylogenesis
maximum likelihood method
multiple sequence alignment
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2018, 99, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical, experimental and fuzzy logic applications for investigation of crack location and crack depth estimation in a free-free aluminum beam
Autorzy:
Behera, S. K.
Parhi, D. R.
Das, H. C.
Powiązania:
https://bibliotekanauki.pl/articles/127769.pdf
Data publikacji:
2018
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
crack
natural frequency
mode shapes
numerical
fuzzy
pęknięcie
częstotliwość drgań własnych
kształty modów
Opis:
A beam structure under natural vibration in presence of crack undergoes a sharp change in its dynamic characteristics. In the present study the changes in two important modal vibration parameters like mode shapes and natural frequencies have been extensively studied for crack diagnosis in presence and absence of crack. Numerical and experimental investigations have been carried out using an aluminium Free-Free beam structure with and without crack. The crack presence is indicative of a decrease in local flexibility at crack location and a variation in mode shapes and natural frequencies are noticed. These variations in modal parameters have been used as the tools for crack diagnosis. In the present paper, efforts are made to analyse the presence of a crack using the application of fuzzy logic methodology. Here relative natural frequencies preferably first three are derived from experimental and theoretical investigations are utilised as input data to the fuzzy controller with Gaussian membership functions to obtain crack position and crack depth as output data. The resulted output data from fuzzy logic and the result from corresponding experimental and numerical analysis have been compared.The deviation of result of fuzzy logic from numerical and experimental results have been found to be within a limit of 3%.
Źródło:
Vibrations in Physical Systems; 2018, 29; 1-20
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameters estimation and life cycle economic analysis of a PV powered tri-cycle in India
Autorzy:
Das, S.
Sadhu, P. K.
Majhi, A.
Ghatak, U.
Bandyopadhya, T.
Powiązania:
https://bibliotekanauki.pl/articles/141519.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PV
tri-cycle
LCEA
fuel-based
Opis:
This paper is devoted towards life cycle economic analysis (LCEA) of a solar photovoltaic (PV) powered tri-cycle. The paper is meant to propose a more systematic approach in determining the optimum use of scarce resources in order to determine the most cost-effective option of the solar tri-cycle. This analysis is based on the life cycle cost of this solar vehicle, involving its comparison with the customary fuel-based tri-cycle which exhibits the relatively less expenditure of the solar alternative. The economic analysis takes into account the fact that over 20 years, the overall price of solar component, replacement and electricity charges, is much lower as compared to that of a fuel-based tri-cycle in India taking into consideration the fuel cost, maintenance and annual inflation over the same period.
Źródło:
Archives of Electrical Engineering; 2018, 67, 3; 655--665
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromophoric dissolved organic matter (CDOM) variability over the continental shelf of the Northern Bay of Bengal
Autorzy:
Das, S.
Das, I.
Giri, S.
Chanda, A.
Maity, S.
Lotliker, A.A.
Kumar, T.S.
Akhand, A.
Hazra, S.
Powiązania:
https://bibliotekanauki.pl/articles/48552.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
chromophoric dissolved organic matter
absorption coefficient
sea surface
salinity
chlorophyll a
total suspended matter
spatio-temporal variability
Bengal Bay
continental shelf
Opis:
The present paper dealt with the annual dynamics of the absorption coefficient of chromophoric dissolved organic matter at 440 nm {aCDOM(440)} during February 2015 to January 2016 in the continental shelf of northern Bay of Bengal (nBoB) for the first time. Sea surface salinity (SSS), chlorophyll-a (Chl-a), total suspended matter (TSM) were also analyzed. It was hypothesized that CDOM should exhibit significant spatial and temporal variability in this region. aCDOM(440) and spectral slope ranged between 0.1002 m1—0.6631 m1 and 0.0071 nm1— 0.0229 nm1 respectively during the entire study period. Higher values of aCDOM(440) were observed in the near shore stations and gradually decreased towards the offshore. Significant seasonal variability of aCDOM(440) was observed between the monsoon and non-monsoon seasons ( p < 0.05). Thus the framed hypothesis was successfully accepted by means of the present study. The CDOM was mainly found to be of allochthonous character in this region. aCDOM(440) portrayed a significant negative linear relationship with SSS (R2 = 0.80; p < 0.05) implying conservative mixing of marine and terrestrial end members. However, examining the spatial variability of the relationship, it was observed that this relationship was significant only in the nearshore stations. While examining the seasonal variability of this relationship, it was found to be most significant during the monsoon (R2 = 0.81; p < 0.05). Thus it was inferred that whenever the SSS gradient was higher, the relationship between aCDOM(440) and SSS was found to be most significant.
Źródło:
Oceanologia; 2017, 59, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of rotation in an orthotropic elastic slab
Autorzy:
Santra, S.
Lahiri, A.
Das, N. C.
Powiązania:
https://bibliotekanauki.pl/articles/264403.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
orthotropic elastic slab
normal mode analysis
effect of rotation
płyta elastyczna
efekt rotacji
termoelastyczność
Opis:
The fundamental equations of the two dimensional generalized thermoelasticity (L-S model) with one relaxation time parameter in orthotropic elastic slab has been considered under effect of rotation. The normal mode analysis is used to the basic equations of motion and heat conduction equation. Finally, the resulting equations are written in the form of a vector-matrix differential equation which is then solved by the eigenvalue approach. The field variables in the space time domain are obtained numerically. The results corresponding to the cases of conventional thermoelasticity CTE), extended thermoelasticity (ETE) and temperature rate dependent thermoelasticity (TRDTE) are compared by means of graphs.
Źródło:
International Journal of Applied Mechanics and Engineering; 2017, 22, 1; 163-174
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First report of twig blight of ban tulsi (Croton bonplandianus Bail.) caused by Choanephora cucurbitarum (Berk.and Ravenel) Thaxt. in India
Autorzy:
Das, S.
Dutta, S.
Ray, S.K.
Powiązania:
https://bibliotekanauki.pl/articles/65731.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
twig blight
ban tulsi
Croton bonplandianus
Euphorbiaceae
herb
perennial plant
folk medicine
Choanephora cucurbitarum
plant pathogen
sporangium
India
Opis:
In August 2015, twig blight disease of ban tulsi (Croton bonplandianus Bail.) caused by Choanephora cucurbitarum (Berk. & Ravenel) Thaxt. was observed for the first time, in the Gangetic alluvial region of West Bengal, India. A severe disease incidence (40–50%) showed twig blight symptoms starting with shoot apical meristem (SAM), leaf, and blossom blight symptoms. Typical symptoms were characterized by over-projecting black pin head like emerging sporangiola which formed mycelial cushion on the infected surface. The present report describes the identification of the causal pathogen as C. cucurbitarum based on its morphology and the internal transcribed spacer of its ribosomal DNA (rDNA – ITS) sequences with 100% identity of NCBI-GenBank published Choanephora database. Optimum temperatures, 28–30°C, coupled with high relative humidity (80–90%) during the monsoon season enhances the disease’s progress. To the best of our knowledge this is the first report of twig blight of C. bonplandianus, caused by C. cucurbitarum, in India as well as globally.
Źródło:
Journal of Plant Protection Research; 2017, 57, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical Properties of a Bainitic Steel Producible by Hot Rolling
Autorzy:
Rana, R.
Chen, S.
Haldar, A.
Das, S.
Powiązania:
https://bibliotekanauki.pl/articles/352494.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
carbide-free bainite
retained austenite
hot rolling
mechanical properties
Opis:
A carbide-free bainitic microstructure is suitable for achieving a combination of ultra high strength and high ductility. In this work, a steel containing nominally 0.34C-2Mn-1.5Si-1Cr (wt.%) was produced via industrial hot rolling and laboratory heat treatments. The austenitization (900°C, 30 min.) and austempering (300-400°C, 3 h) treatments were done in salt bath furnaces. The austempering treatments were designed to approximately simulate the coiling step, following hot rolling and run-out-table cooling, when the bainitic transformation would take place and certain amount of austenite would be stabilized due to suppression of carbide precipitation. The microstructures and various mechanical properties (tensile properties, bendability, flangeability, and room and subzero temperature impact toughness) relevant for applications were characterized. It was found that the mechanical properties were highly dependent on the stability of the retained austenite, presence of martensite in the microstructure and the size of the microstructural constituents. The highest amount of retained austenite (~ 27 wt.%) was obtained in the sample austempered at 375°C but due to lower austenite stability and coarser overall microstructure, the sample exhibited lower tensile ductility, bendability, flangeability and impact toughness. The sample austempered at 400°C also showed poor properties due to the presence of initial martensite and coarse microstructure. The best combination of mechanical properties was achieved for the samples austempered at 325-350°C with a lower amount of retained austenite but with the highest mechanical stability.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 2331-2338
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal selection of dental implant for different bone conditions based on the mechanical response
Autorzy:
Roy, S.
Das, M.
Chakraborty, P.
Biswas, J. K.
Chatterjee, S.
Khutia, N.
Saha, S.
Roychowdhury, A.
Powiązania:
https://bibliotekanauki.pl/articles/307549.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
wytrzymałość kości
implanty stomatologiczne
analiza FEM
pacjent
bone condition
porous dental implant
FE Analysis
patient specific
Opis:
Bone quality varies from one patient to another extensively; also, Young’s modulus may deviate up to 40% of normal bone quality, which results into alteration of bone stiffness immensely. The prime goal of this study is to design the optimum dental implant considering the mechanical response at bone implant interfaces for a patient with specific bone quality. Method. 3D model of mandible and natural molar tooth were prepared from CT scan data while, dental implants were modelled using different diameter, length and porosity and FE analysis was carried out. Based on the variation in bone density, five different bone qualities were considered. First, failure analysis of implants, under maximum biting force of 250N had been performed; next, the implants, those survived were selected for observing the mechanical response at bone implant interfaces under common chewing load of 120N. Result. Maximum Von Mises stress did not surpass the yield strength of the implant material (TiAl4V). However, factor of safety of 1.5 was considered and all but two dental implants survived the design stress or allowable stress. Under 120N load, distribution of Von Mises stress and strain at the bone-implant interface corresponding to the rest of the implants for five bone conditions were obtained and enlisted. Conclusion. Implants, exhibiting interface strain within 1500-3000 microstrain range show the best bone remodelling and osseointegration. So, implant models, having this range of interface strains were selected corresponding to the particular bone quality. A set of optimum dental implants for each of the bone qualities were predicted.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 11-20
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technique Based on Fuzzy Logic for Cotton Bale Lay-down Management
Nowa technika zarządzania składowaniem bel bawełny
Autorzy:
Das, S.
Ghosh, A.
Powiązania:
https://bibliotekanauki.pl/articles/232810.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
cotton bale
cluster analysis
fibre property
fuzzy logic
fuzzy c-means algorithm
składowanie bawełny
logika rozmyta
bela bawełny
Opis:
In this paper a new technique has been proposed for cotton bale management using fuzzy logic. The fuzzy c-means clustering algorithm has been applied for clustering cotton bales into 5 categories from 1200 randomly chosen bales of the J-34 variety. In order to cluster bales of different categories, eight fibre properties, viz., the strength, elongation, upper half mean length, length uniformity, short fibre content, micronaire, reflectance and yellowness of each bale have been considered. The fuzzy c-means clustering method is able to handle the haziness that may be present in the boundaries between adjacent classes of cotton bales as compared to the K-means clustering method. This method may be used as a convenient tool for the consistent picking of different bale mixes from any number of bales in a warehouse.
W artykule zaproponowano nową technikę zarządzania składowaniem bawełny opartą na logice rozmytej. Badaniu poddano 1200 losowo wybranych bel bawełny. W celu pogrupowania bel w 5 kategoriach zbadano właściwości, tj. wytrzymałość, wydłużenie, średnią długość, jednorodność długości, zawartość włókien krótkich, dojrzałość, współczynnik odbicia i zażółcenie każdej beli. Opracowana metoda może być stosowana jako wygodne narzędzie do sortowania różnych mieszanek z dowolnej liczby bel w magazynie.
Źródło:
Fibres & Textiles in Eastern Europe; 2017, 2 (122); 30-33
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Earth observation and geospatial techniques for soil salinity and land capability assessment over Sundarban Bay of Bengal Coast, India
Autorzy:
Das, S.
Choudhury, M. R
Nagarajan, M.
Powiązania:
https://bibliotekanauki.pl/articles/145537.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
właściwości gleby
teledetekcja
dane satelitarne
Landsat
GIS and Remote Sensing
kriging
soil properties
land capability
Opis:
To guarantee food security and job creation of small scale farmers to commercial farmers, unproductive farms in the South 24 PGS, West Bengal need land reform program to be restructured and evaluated for agricultural productivity. This study established a potential role of remote sensing and GIS for identification and mapping of salinity zone and spatial planning of agricultural land over the Basanti and Gosaba Islands(808.314sq. km) of South 24 PGS. District of West Bengal. The primary data i.e. soil pH, Electrical Conductivity (EC) and Sodium Absorption ratio (SAR) were obtained from soil samples of various GCP (Ground Control Points) locations collected at 50 mts. intervals by handheld GPS from 0–100 cm depths. The secondary information is acquired from the remotely sensed satellite data (LANDSAT ETM+) in different time scale and digital elevation model. The collected field samples were tested in the laboratory and were validated with Remote Sensing based digital indices analysisover the temporal satellite data to assess the potential changes due to over salinization. Soil physical properties such as texture, structure, depth and drainage condition is stored as attributes in a geographical soil database and linked with the soil map units. The thematic maps are integrated with climatic and terrain conditions of the area to produce land capability maps for paddy. Finally, The weighted overlay analysis was performed to assign theweights according to the importance of parameters taken into account for salineareaidentification and mapping to segregate higher, moderate, lower salinity zonesover the study area.
Źródło:
Geodesy and Cartography; 2016, 65, 2; 163-192
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Highly efficient cladding pumped dual-wavelength thulium ytterbium co-doped fiber laser
Autorzy:
Latiff, A.A.
Babar, I.
Shamsudin, H.
Paul, M.
Halder, A.
Das, S.
Bhadra, S.
Ahmad, H.
Harun, S.
Powiązania:
https://bibliotekanauki.pl/articles/1058544.pdf
Data publikacji:
2016-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.55.Wd
42.60.Fc
42.70.-a
Opis:
This paper describes the all-fiber dual-wavelength thulium ytterbium co-doped fiber laser by using a newly developed octagonal shaped double-clad thulium-ytterbium co-doped fiber as gain medium in conjunction with spatial filtering effect. The thulium ytterbium co-doped fiber laser operates at wavelengths of 1990.64 nm and 1998.92 nm with a signal to noise ratio of more than 34 dB as the 980 nm multimode pump power is increased above a threshold value of 1.5 W. The slope efficiency of the dual-wavelength laser is measured to be around 26.16%, which is comparable with the conventional thulium laser pumped by 800 nm single mode pump.
Źródło:
Acta Physica Polonica A; 2016, 130, 6; 1332-1335
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 56

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