Results 21 to 30 of about 27,851 (250)

Group Divisible Codes and Their Application in the Construction of Optimal Constant-Composition Codes of Weight Three [PDF]

open access: yes, 2008
The concept of group divisible codes, a generalization of group divisible designs with constant block size, is introduced in this paper. This new class of codes is shown to be useful in recursive constructions for constant-weight and constant-composition
Chee, Yeow Meng   +2 more
core   +1 more source

Thermal requirements, physiological growth, and Grain sterility of some rice (Oryza sativa L.) Genotypes grown in different sowing dates [PDF]

open access: yesTikrit Journal for Agricultural Sciences
The growth and development of rice are significantly impacted by high temperatures, which also increases the sterility percentage. The consequences of extreme heat can be mitigated by selecting appropriate sowing dates for rice genotypes, particularly ...
khoshi Muhammad Rashid, Mohammed, A. A.
doaj   +1 more source

Design, production and characterization of mirrors for ultra-broadband, high-finesse enhancement cavities [PDF]

open access: yes, 2016
To enable the enhancement of few-cycle pulses in high-finesse passive optical resonators, a novel complementary-phase approach is considered for the resonator mirrors.
Amotchkina, T.   +6 more
core   +1 more source

Linkages Between the Phenologies of Jack Pine \u3ci\u3e(Pinus Banksiana)\u3c/i\u3e Foliage and Jack Pine Budworm (Lepidoptera: Tortricidae) [PDF]

open access: yes, 2018
A field study conducted in 2001 and 2002 in the Michigan Upper Peninsula investigated seasonal associations between the development of jack pine, Pinus banksiana Lamb., and larvae of the jack pine budworm Choristoneura pinus Freeman (Lepidoptera ...
Cadogan, Beresford L   +4 more
core   +2 more sources

Newly introduced strawberry genotypes for Nordic Baltic conditions

open access: yesHorticultural Science, 2017
Eight recently introduced strawberry genotypes 'Chambly', 'Clery', 'Darselect', 'Delia', 'Harmonie', 'Matis', 'Sallybright', 'Salsa' and 'Senga Sengana' (standard cultivar) were evaluated at the Polli Horticultural Research Centre of the Estonian ...
Ave Kikas   +3 more
doaj   +1 more source

Compression of extreme-ultraviolet ultrashort pulses by grating configurations [PDF]

open access: yes, 2015
The design and realization of grating instruments to condition the spectral phase of ultrashort extreme-ultraviolet pulses are discussed. The main application of such configurations is the temporal compression of pulses by compensating the phase chirp ...
Frassetto, Fabio   +2 more
core   +3 more sources

Observations of Dispersion Cancellation of Entangled Photon Pairs

open access: yes, 2011
An experimental study of the dispersion cancellation occurring in frequency-entangled photon pairs is presented. The approach uses time-resolved up conversion of the pairs, which has temporal resolution at the fs level, and group-delay dispersion ...
J.-C. Diels, Kevin A. O’Donnell
core   +1 more source

GDD Type Spanning Bipartite Block Designs

open access: yesJournal of Combinatorial Designs
ABSTRACTThere is a one‐to‐one correspondence between the point set of a group divisible design (GDD) with groups of points and the edge set of a complete bipartite graph . A block of GDD corresponds to a subgraph of . We show that the concurrence conditions of two points of GDD can correspond to the edge concurrence conditions of subgraphs of , which
Shoko Chisaki   +2 more
openaire   +3 more sources

Impact of GDD on phenology of mango (Mangifera indica)

open access: yesThe Indian Journal of Agricultural Sciences, 2015
The present investigation was undertaken to see the influence of Heat Units on the phenological changes in mango (Mangifera indica L.) cultivars under South Saurashtra agro-climatic conditions at Department of Horticulture, Junagadh Agricultural ...
DILIP KANZARIA   +3 more
doaj   +1 more source

Genetic dissection of photoperiod response based on GWAS of pre-anthesis phase duration in spring barley [PDF]

open access: yes, 2014
Heading time is a complex trait, and natural variation in photoperiod responses is a major factor controlling time to heading, adaptation and grain yield.
A Tondelli   +51 more
core   +5 more sources

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