Trimming the Christmas Tree or Lighting Menorah Candles Together May Strengthen Your Marriage

Miller's technique was applied to isolated nuclei of rat liver. Both the usual nucleolar and non-nucleolar transcription complexes were visualized. In addition, an unusual type of putative non-ribosomal transcription unit was revealed. It was charcaterized by a high density of the lateral ribonucleoprotein (RNP) fibrils. Although these particular units exhibited a regular increase of fibril lengths, the length of the transcript-covered deoxyribonucleoprotein (DNP) fibres and the morphological aspect of the RNP fibrils distinguished them from the nucleolar ‘Christmas-tree’-like figures. The linear and granular configuration of the transcripts and the absence of terminal knobs made them similar to non-nucleolar nascent RNP fibrils.

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Nonlinear Drop Simulations of a Christmas Tree in Deep Waters

Volume 1B: Offshore Technology ◽

10.1115/omae2014-24284 ◽

2014 ◽

Author(s):

Arya Majed ◽

Phil Cooper

Keyword(s):

Cone Angle ◽

Water Entry ◽

Christmas Tree ◽

Impact Zone ◽

Initial Water ◽

Type Method ◽

Deep Waters ◽

Uniform Current ◽

Simulation Results ◽

Water Simulation

This paper presents an investigation of the still water sink trajectories of an accidentally dropped Christmas Tree (XT). A 3D coupled nonlinear dynamics/hydrodynamics model of the XT is constructed and simulations executed from surface to seabed. XT initial water entry orientations are randomly varied in a Monte-Carlo simulation to predict the seabed impact zone. Still water simulation results are compared to simplified cone-angle type method predictions. The effect of XT flat panels on excursion mitigation is investigated. Finally, the influence of non-uniform current effects is studied.

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Bionomics of the pine needle scale (Hemiptera: Diaspididae), an emerging pest in Christmas tree (Pinaceae) plantations in southern Québec, Canada

The Canadian Entomologist ◽

10.4039/tce.2018.41 ◽

2018 ◽

Vol 150 (5) ◽

pp. 632-636 ◽

Cited By ~ 1

Author(s):

Jean-Frdéric Guay ◽

Amy Bernier-Desmarais ◽

Jean-François Doherty ◽

Conrad Cloutier

Keyword(s):

Life Cycle ◽

Scale Insects ◽

Tree Plantations ◽

Christmas Tree ◽

Pine Needle ◽

Abies Fraseri ◽

Fraser Fir ◽

Christmas Trees ◽

Significant Damage ◽

The Status

AbstractThe pine needle scale, Chionaspis pinifoliae (Fitch) (Hemiptera: Diaspididae), has the status of an emerging pest in Christmas tree (Pinaceae) plantations in Québec, Canada. The scale is not known to cause any significant damage yet and is not generally monitored by growers. However, it can be an obstacle for exportation to Christmas tree markets where scale insects are strictly regulated. In this study, we describe its life cycle in Christmas tree plantations in southern Québec. We confirm the presence of both parthenogenetic and sexual forms of the scale on Fraser fir Abies fraseri (Pursh) Poiret (Pinaceae) grown as Christmas trees, and of parasitoid and Coccinellidae (Coleoptera) specialists that could contribute to its control.

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