Results 11 to 20 of about 68,403 (207)

Segmenting 20 Types of Pollen Grains for the Cretan Pollen Dataset v1 (CPD-1)

open access: yesApplied Sciences, 2021
Pollen analysis and the classification of several pollen species is an important task in melissopalynology. The development of machine learning or deep learning based classification models depends on available datasets of pollen grains from various plant
Nikos Tsiknakis   +6 more
doaj   +1 more source

Palaeolimnology of Lake Sapanca and identification of historic earthquake signals, Northern Anatolian Fault Zone (Turkey) [PDF]

open access: yes, 2009
Lake Sapanca is located on a strand of the Northern Anatolian Fault Zone (NAFZ, Turkey), where a series of strong earthquakes (Ms >6.0) have occurred over the past hundred years. Identifying prehistoric earthquakes in and around Lake Sapanca is key to a
Bertrand, S   +6 more
core   +1 more source

Preliminary studies on mustard taxonomy based on pollen morphology

open access: yes浙江大学学报. 农业与生命科学版, 2006
Pollen grains of 17 mustard subspecies were examined under scanning electron microscope. The result showed that the pollen shapes were nearly spherical, or spheroidal, or super-spheroidal from the equatorial view, depending on cultivars of mustard.
MENG Qiu-feng   +3 more
doaj   +1 more source

The role of forensic geoscience in wildlife crime detection [PDF]

open access: yes, 2006
The increase in both automation and precision in the analysis of geological materials has had significant impact upon forensic investigations in the last 10 years.
Bull, PA   +3 more
core   +1 more source

Disturbances in microsporogenesis and pollen grain development in Gagea lutea (L.) Ker. Gaw.

open access: yesActa Agrobotanica, 2012
The meiotic division of microsporocytes and pollen grain development in Gagea lutea (L.) Ker.-Gaw. (Liliaceae) with fluorescence microscope (excitation light 400 nm) was observed after squashing the anthers in DAPI solution (fluorochrom dying DNA). Up to
Ewa Szczuka   +4 more
doaj   +1 more source

Messenger RNas : their utilization and degradation during pollen germination and tube growth

open access: yesActa Societatis Botanicorum Poloniae, 2014
During pollen germination and tube growth at least 230 new proteins are synthesized, as determined by 35S-methionime labeling and two dimensional gel electrophoretic analysis of the labeled proteins.
Joseph P. Mascarenhas, Joann Mermelstein
doaj   +1 more source

The ultrastructure of pollen grain surface in allotetraploid petunia (Petunia hybrida hort. superbissima) as revealed by scanning electron microscopy

open access: yesActa Societatis Botanicorum Poloniae, 2015
The ultrastructure of pollen grain surface in allotetraploid petunias was analyzed by scanning electron microscopy. The pollen grain wall is developed into characteristic pattern of convulations.
S. Muszyński   +3 more
doaj   +1 more source

Pollen grains for oral vaccination [PDF]

open access: yesJournal of Controlled Release, 2014
Oral vaccination can offer a painless and convenient method of vaccination. Furthermore, in addition to systemic immunity it has potential to stimulate mucosal immunity through antigen-processing by the gut-associated lymphoid tissues. In this study we propose the concept that pollen grains can be engineered for use as a simple modular system for oral ...
Shashwati U, Atwe   +2 more
openaire   +2 more sources

Cross-sensitization between poppy seed and buckwheat in a food-allergic patient with poppy seed anaphylaxis [PDF]

open access: yes, 2006
The opium poppy, Papaver somniferum L., is the source of both poppy seeds and opium. The commercially available seeds are widely used as ingredients for various kinds of food.
Oppel, T., Thomas, P., Wollenberg, A.
core   +1 more source

Downregulation of OsAGO17 by artificial microRNA causes pollen abortion resulting in the reduction of grain yield in rice

open access: yesElectronic Journal of Biotechnology, 2018
Background: Pollen development is an important reproductive process that directly affects pollen fertility and grain yield in rice. Argonaute (AGO) proteins, the core effectors of RNA-mediated silencing, play important roles in regulating plant growth ...
Min Yao   +5 more
doaj   +1 more source

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