353 research outputs found
A Review on Challenges and Opportunities for Implementing Industry 4.0 in India
The globalization and the competitiveness are enforcing organizations to readdress and innovate their production processes. The world is entering a new era of industrial emanating technology in automation and data exchange through the use of Internet of Things called fourth technological revolution or Industry 4.0. It represents the amalgamation of tools already used in the past such as big data; cloud, robot, 3D printing, simulation, etc. are now connected into an internet to transmit digital data. For the implementation of this new paradigm, there are many opportunities and also many challenges. This paper highlights brief introduction on challenges and opportunities for implementation of Industry 4.0 in India
Impact of Zn substitution on phase formation and superconductivity of Bi1.6Pb0.4 Sr2Ca2Cu3-xZnxO10 with x = 0.0, 0.015, 0.03, 0.06, 0.09 and 0.12
Samples of series Bi1.6Pb0.4Sr2Ca2Cu3-xZnxO10 with x = 0.0, 0.015, 0.03,
0.06, 0.09 and 0.12 are synthesized by solid-state reaction route. All the
samples crystallize in tetragonal structure with majority (> 90%) of Bi-2223
(Bi2Sr2Ca2Cu3O10) phase (c-lattice parameter ~ 36 A0). The proportion of
Bi-2223 phase decreases slightly with an increase in x. The lattice parameters
a and c of main phase (Bi-2223) do not change significantly with increasing x.
Superconducting critical transition temperature (Tc) decreases with x as
evidenced by both resistivity [(T)] and AC magnetic susceptibility [(T)]
measurements. Interestingly the decrement of Tc is not monotonic and the same
saturates at around 96 K for x > 0.06. In fact Tc decreases fast (~10K/at%) for
x = 0.015 and 0.03 samples and later nearly saturates for higher x values.
Present results of Zn doping in Bi-2223 system are compared with Zn doped other
HTSC (High temperature superconducting) systems, namely the RE-123 (REBa2Cu3O7)
and La-214 ((La,Sr)2CuO4).Comment: 12, pages of text and Figs. TO APPEAR IN Mod. Phys. Lett. B (2005)
Review on cephalopod resources, biology and stock assessment in Indian seas
Cephalopods are fished from the seas around India from very
early times and at present contribute one of the most important
exploited marine fishery resources oj the country (between 4 and
5% of the all India production). The production, which remained at
very low level up to the early seventies, has shown a remarkable
increase crossing the 1,00,000 tonne mark in 1994. The taxonomy,
biology and stock assessment of the various exploited species have
been studied since the early seventies by the CMFRI. Studies
indicate that uplo 1994 tlie exploitation has remained within rational
limits in almost all maritime states. The recent rapid increase in
production warrants close monitoring of this short-lived resource
from the viewpoint of Judicious management
Development of eAgromet Prototype to Improve the Performance of Integrated Agromet Advisory Service
In several countries, the systems for forecasting weather are being operated to deal with weather and its related factors affecting agricultural production. India meteorological department (IMD) is providing several types of weather forecasts. One of the forecast service is medium range forecast (MRF). As a part of MRF, the expected values of rain fall, temperature, cloud cover, humidity, wind speed and wind direction for next five days are forecasted twice a week by considering district as a unit. Agriculture is markedly affected by weather condition during crop season. IMD in collaboration with Indian Council of Agriculture Research (ICAR) and State Agriculture Universities (SAUs) has set-up about 130 Agro-meteorological Field Units (AMFUs) and each AMFU covers about five districts. Based on MRF, IMD is rendering Integrated Agromet Advisory Service to the farming community of the country in the form of agromet advisory bulletin. The agromet advisory bulletins contain possible risk mitigation measures for the major crops and livestock. Based on the weather forecast, a group of interdisciplinary scientists and agromet scientists at AMFU prepare district-level agromet advisory bulletins. These bulletins are sent to the farmers and other stakeholders of the corresponding district. To ease the process of preparing agromet bulletins, an effort has started to build IT-based agrometeorological advisory system called, eAgromet. In this paper, we explain the concepts of eAgromet and its operation
Mechanism of the Very Efficient Quenching of Tryptophan Fluorescence in Human γD- and γS-Crystallins: The γ-Crystallin Fold May Have Evolved To Protect Tryptophan Residues from Ultraviolet Photodamage†
Proteins exposed to UV radiation are subject to irreversible photodamage through covalent modification of tryptophans (Trps) and other UV-absorbing amino acids. Crystallins, the major protein components of the vertebrate eye lens that maintain lens transparency, are exposed to ambient UV radiation throughout life. The duplicated β-sheet Greek key domains of β- and γ-crystallins in humans and all other vertebrates each have two conserved buried Trps. Experiments and computation showed that the fluorescence of these Trps in human γD-crystallin is very efficiently quenched in the native state by electrostatically enabled electron transfer to a backbone amide [Chen et al. (2006) Biochemistry 45, 11552−11563]. This dispersal of the excited state energy would be expected to minimize protein damage from covalent scission of the excited Trp ring. We report here both experiments and computation showing that the same fast electron transfer mechanism is operating in a different crystallin, human γS-crystallin. Examination of solved structures of other crystallins reveals that the Trp conformation, as well as favorably oriented bound waters, and the proximity of the backbone carbonyl oxygen of the n − 3 residues before the quenched Trps (residue n), are conserved in most crystallins. These results indicate that fast charge transfer quenching is an evolved property of this protein fold, probably protecting it from UV-induced photodamage. This UV resistance may have contributed to the selection of the Greek key fold as the major lens protein in all vertebrates.National Eye Institute (Grant EY 015834
Absence of truncating BRIP1 mutations in chromosome 17q-linked hereditary prostate cancer families
Background:In a genome-wide scan (GWS) of 175 multiplex prostate cancer (PCa) families from the University of Michigan Prostate Cancer Genetics Project (PCGP), linkage was observed to markers on chromosome 17q21–24, a region that includes two breast cancer susceptibility genes, BRCA1 and BRIP1. BRIP1 is a Fanconi anaemia gene (FANCJ) that interacts with the BRCT domain of BRCA1 and has a role in DNA damage repair. Protein truncating mutations in BRIP1 have been identified in hereditary breast and ovarian cancer families, and a recent report suggested that a recurrent truncating mutation (R798X) may have a role in PCa susceptibility.Methods:We examined the role of BRIP1 mutations in hereditary PCa through sequence analysis of 94 individuals from PCGP families showing linkage to 17q.Results:A total of 24 single-nucleotide polymorphisms, including 7 missense variants but no protein truncating mutations, were observed.Conclusion:The data presented here suggest that BRIP1 truncating mutations are uncommon in PCa cases and do not account for the linkage to chromosome 17q observed in our GWS. Additional investigation is needed to determine the significance, if any, of the observed BRIP1 missense variants in hereditary PCa
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