Results 91 to 100 of about 3,659,950 (327)

Spanning trees with many leaves: new extremal results and an improved FPT algorithm [PDF]

open access: yes, 2006
We present two lower bounds for the maximum number of leaves in a spanning tree of a graph. For connected graphs without triangles, with minimum degree at least three, we show that a spanning tree with at least (n+4)/3 leaves exists, where n is the ...
Bonsma, P.S.
core   +2 more sources

The cytochrome oxidase defect in ISC‐depleted yeast is caused by impaired iron–sulfur cluster maturation of the mitoribosome assembly factor Rsm22

open access: yesFEBS Letters, EarlyView.
The yeast mitoribosome assembly factor Rsm22 contains a [4Fe‐4S] cluster that is matured by the mitochondrial iron–sulfur cluster assembly (ISC) machinery. Defects in ISC components result in impaired mitochondrial protein synthesis due to a mitoribosome assembly defect.
Ulrich Mühlenhoff   +4 more
wiley   +1 more source

The Neutral Detergent Fiber Digestibility of Some Tropical Grasses at Different Stage of Maturity

open access: yesAnimal Production: Indonesian Journal of Animal Production, 2009
The digestibility of neutral detergent fiber (IVNDFD) was determined by Telly and Terry methods in vitro on 5 tropical grasses species, Sorghum, Themeda, Iseilema, Brachyacne and Dicanthium.
P Mahyuddin, ND Purwantari
doaj  

Chemical Characterization and Biological Activities Evaluation of Myrtus communis L. Essential Oil Extraction By-Product towards Circular Economy and Sustainability

open access: yesFoods
Essential oil (EO) extraction is a widespread practice generating huge amounts of solid plant by-products a potential source of bioactive compounds, on the one hand, and a detrimental risk for the environment that needs to be carefully considered on the ...
Meriem Abdessemed   +8 more
doaj   +1 more source

Micromycetes colonizing and damaging leaves of evergreen rhododendron (Rhododendron L.) in nursery

open access: yesActa Agrobotanica, 2015
In May and October 2010–2012, mycological studies were conducted on 10 cultivars of rhododendron bushes growing in containers in the nursery of ornamental plants.
Maria Kowalik   +2 more
doaj   +1 more source

Development of visible light‐sensitive human neuropsin (OPN5) via single amino acid substitution

open access: yesFEBS Letters, EarlyView.
The present study determines a key amino acid residue, Lys91, for defining UV sensitivity of human OPN5. Heterologous action spectroscopy of the wild type and K91 mutants of OPN5 in HEK293T cells reveals that substitution of Lys91 with neutral (alanine) or acidic amino acids (glutamic or aspartic acids) causes substantial shifts in spectral sensitivity
Yusuke Sakai   +2 more
wiley   +1 more source

ISOLATION OF ANTIOXIDANT COMPOUNDS OF METHANOL EXTRACT OF NUTMEG LEAVES (Myristica fragrans Houtt)

open access: yesJurnal Natural, 2017
The antioxidant activity from methanol extract of nutmeg leaves (Myristica fragrans Houtt) was performed using 2,2-diphenyl-1-picrylhydrazil (DPPH). Antioxidant assay using DPPH of the methanol extract at a concentration of 25 ppm, 50 ppm and 100 ppm ...
Nurmilasari   +2 more
doaj  

Stress response in tomato as influenced by repeated waterlogging

open access: yesFrontiers in Plant Science
IntroductionPlants respond to water stress with a variety of physiological and biochemical changes, but their response varies among species, varieties and cultivars.
Sonja Umićević   +7 more
doaj   +1 more source

The growth and flowering of Hyacinthus orientalis L. Forced in pots under fluorescent light of different colours

open access: yesActa Agrobotanica, 2014
Three hyacinth cultivars were forced under fluorescent lamps which emitted white, blue, green, yellow and red light. The plants started flowering in the first decade of February.
Małgorzata Śmigielska   +2 more
doaj   +1 more source

Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells

open access: yesFEBS Letters, EarlyView.
Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan   +2 more
wiley   +1 more source

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