Results 71 to 80 of about 31,983 (250)

Design and evaluation of helicopter landing variants for firefighting in Golestan National Park, Northeast of Iran

open access: yesCaspian Journal of Environmental Sciences, 2016
Helicopter landing sites in proximity to the forest fire-risk zones are necessary for the delivery of supplies and fire emergency response teams. In this paper, we initially prepared forest fire risk map using Random Forest algorithm by overlaying the ...
Parsakhoo, A.   +2 more
doaj  

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Influence of mulching on gherkins at two levels of irrigation

open access: yesHorticultural Science, 2018
The field experiments described here were conducted over a period of three years. The effect of mulching on emergence, phenophase, the weight of single fruits and yield of the 'Elisabet F1' and 'Harriet F1' cultivars of gherkins were evaluated, using ...
Vojtěch Ptáček   +3 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Abdullah A. Hussain CODE DENSITY OPTOMIZATION AND IMPLEMENTATION USING LZW APPROACH BASED ON 32-BIT RISC PROCESSOR

open access: yesمجلة علوم ذي قار, 2019
Considering the worldwide used of mobile to connect internet, and code compression technology that played significant role in saving space and power.
Abdullah Hussain
doaj  

Scaling up for the industrial production of rifamycin B; optimization of the process conditions in bench-scale fermentor

open access: yesBulletin of Faculty of Pharmacy Cairo University, 2013
Optimization of fermentation process conditions using a gene amplified variant of Amycolatopsis mediterranei (NCH) was carried out. The use of aeration level 1.5 vvm increased the yield by 16.6% (from 13.81 to 16.1 g/l) upon controlling the temperature ...
Hewaida F. El-Sedawy   +4 more
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Thermal Experimental Dielectric Characterization of Cost-Fewer Low-Density Polyethylene Nanocomposites

open access: yesAdvances in Electrical and Electronic Engineering, 2014
Polymer properties can be experimentally tailored by adding small amounts of different fillers, but they are expensive with respect to the classical polymer materials. This paper has been studied the enhancement and controlling of electric and dielectric
Osama Gouda, Ahmed Thabet Mohamed
doaj   +1 more source

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