86 research outputs found
Optimal Control of Molecular Motion Expressed Through Quantum Fluid Dynamics
A quantum fluid dynamic control formulation is presented for optimally
manipulating atomic and molecular systems. In quantum fluid dynamic the control
quantum system is expressed in terms of the probability density and the quantum
current. This choice of variables is motivated by the generally expected slowly
varying spatial-temporal dependence of the fluid dynamical variables. The
quantum fluid dynamic approach is illustrated for manipulation of the ground
electronic state dynamics of HCl induced by an external electric field.Comment: 18 pages, latex, 3 figure
Automatic segmentation of cerebral infarcts in follow-up computed tomography images with convolutional neural networks
Background and purpose: Infarct volume is a valuable outcome measure in treatment trials of acute ischemic stroke and is strongly associated with functional outcome. Its manual volumetric assessment is, however, too demanding to be implemented in clinical practice. Objective: To assess the value of convolutional neural networks (CNNs) in the automatic segmentation of infarct volume in follow-up CT images in a large population of patients with acute ischemic stroke. Materials and methods: We included CT images of 1026 patients from a large pooling of patients with acute ischemic stroke. A reference standard for the infarct segmentation was generated by manual delineation. We introduce three CNN models for the segmentati
A novel double Friedel-Crafts reaction: a new entry into bicyclo[3.2.2]nonane system
A novel synthesis of dibenzobicyclo[3.2.2]nonane systems is described through a double Friedel-Crafts reaction
Direct conversion of 13β-alkylgonatetraenes into 13β-alkylgon-4-en-3-ones
Birch reduction of 8, 9-didehydroestradiol-17β 3-methyl ether 1 or 9(11)-didehydroestradiol-17β 3-methyl ether 2 followed by acid hydrolysis results in a mixture of 19-nortestosterone 8 and 19-nor-9β, 10α-testosterone 9 in varying amounts. However, reduction of their acetates with sodium or lithium, tert-butyl alcohol in liquid ammonia and in the presence of aniline affords exclusively 19-nortestosterone. Similarly, 18α-homo-19-nortestosterone 12 is prepared from the acetate of 18a-homoestradiol-17β 3-methyl ether, 10
A new Tardigrade species, Stygarctus keralensis sp. nov. (Arthrotardigrada Stygarctidae) from the intertidal zone of Southwest coast of India
Vishnudattan, N. K., Nandan, S. Bijoy, Hansen, J. G., Jayachandran, P. R. (2021): A new Tardigrade species, Stygarctus keralensis sp. nov. (Arthrotardigrada Stygarctidae) from the intertidal zone of Southwest coast of India. Zootaxa 4985 (3): 381-391, DOI: https://doi.org/10.11646/zootaxa.4985.3.
Species diversity and community structure of ichthyofauna in the seagrass ecosystem of Minicoy Atoll, Lakshadweep, India
Present study consists the species diversity, abundance and community structure of ichthyofauna in the seagrass meadow of Minicoy Atoll, Lakshadweep Islands. Two hundred and three species of fishes were recorded during the study, from four stations in the Atoll. They belonged to 2 classes, 11orders, 43 families and 93 genera. Six species belonged to the class Chondreichthyes and 197 species to Osteichthyes. Family Pomacentridae showed maximum abundance of species (22%). Station I, having close proximity to the coral reefs, observed the maximum number of families (37) and species (129) and that with minimum number was in station II (23 families and 52 species). Bray-Curtis similarity plot showed a similarity range of 22 to 52%, seasonally. Station I showed highest Shannon-Wiener diversity index (H’log2) (4.22) during August and the lowest (2.91) during June. Stations I and III showed comparatively higher abundance and diversity of fishes. Variability in seagrass habitat structure and the interaction with coral reefs influenced the species composition and diversity of fishes in Minicoy Atoll. The findings of the present investigation can be used as baseline information for the fishery resource management of the region
Species diversity and community structure of ichthyofauna in the seagrass ecosystem of Minicoy Atoll, Lakshadweep, India
Present study consists the species diversity, abundance and community structure of ichthyofauna in the seagrass meadow
of Minicoy Atoll, Lakshadweep Islands. Two hundred and three species of fishes were recorded during the study, from four
stations in the Atoll. They belonged to 2 classes, 11orders, 43 families and 93 genera. Six species belonged to the class
Chondreichthyes and 197 species to Osteichthyes. Family Pomacentridae showed maximum abundance of species (22%).
Station I, having close proximity to the coral reefs, observed the maximum number of families (37) and species (129) and
that with minimum number was in station II (23 families and 52 species). Bray-Curtis similarity plot showed a similarity
range of 22 to 52%, seasonally. Station I showed highest Shannon-Wiener diversity index (H’log2) (4.22) during August and
the lowest (2.91) during June. Stations I and III showed comparatively higher abundance and diversity of fishes. Variability
in seagrass habitat structure and the interaction with coral reefs influenced the species composition and diversity of fishes in
Minicoy Atoll. The findings of the present investigation can be used as baseline information for the fishery resource
management of the regionCochin University of Science and TechnologyIndian Journal of Geo-Marine Sciences
Vol. 42(3), June 2013, pp. 349-35
Not Available
Not AvailablePresent study consists the species diversity, abundance and community structure of ichthyofauna in the seagrass meadow of Minicoy Atoll, Lakshadweep Islands. Two hundred and three species of fishes were recorded during the study, from four stations in the Atoll. They belonged to 2 classes, 11orders, 43 families and 93 genera. Six species belonged to the class Chondreichthyes and 197 species to Osteichthyes. Family Pomacentridae showed maximum abundance of species (22%). Station I, having close proximity to the coral reefs, observed the maximum number of families (37) and species (129) and that with minimum number was in station II (23 families and 52 species). Bray-Curtis similarity plot showed a similarity range of 22 to 52%, seasonally. Station I showed highest Shannon-Wiener diversity index (H’log2) (4.22) during August and the lowest (2.91) during June. Stations I and III showed comparatively higher abundance and diversity of fishes. Variability in seagrass habitat structure and the interaction with coral reefs influenced the species composition and diversity of fishes in Minicoy Atoll. The findings of the present investigation can be used as baseline information for the fishery resource management of the region.Not Availabl
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