Results 31 to 40 of about 1,472,154 (285)

The Development of High Order Numerical Techniques for Reentry Simulation of Hypersonic Spacecraft [PDF]

open access: yes, 1991
The primary difficulty encountered when simulating hypersonic flow is that the flow normally includes strong nonlinear discontinuities. These discontinuities fall into three broad classes: shocks, slip-lines, and rarefaction waves.
Sanders, Richard
core   +1 more source

WALLER CREEK STATUS REPORT 2002 [PDF]

open access: yes, 2002
This short report contains information on Waller Creek's estimated population, fecal coliform levels, land use distribution, mean baseflow, total phosphorus, and other water quality indicators.Water chemistry and biological data from Waller Creek were ...
Scoggins, Mateo
core   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Deoxygenative photochemical alkylation of secondary amides enables a streamlined synthesis of substituted amines

open access: yesNature Communications
Secondary amines are vital functional groups in pharmaceuticals, agrochemicals, and natural products, necessitating efficient synthetic methods. Traditional approaches, including N-monoalkylation and reductive amination, suffer from limitations such as ...
Antonio Pulcinella   +7 more
doaj   +1 more source

A sustainable strategy for the straightforward preparation of 2H-azirines and highly functionalized NH-aziridines from vinyl azides using a single solvent flow-batch approach

open access: yesBeilstein Journal of Organic Chemistry, 2021
The reported flow-batch approach enables the easy preparation of 2H-azirines and their stereoselective transformation into highly functionalized NH-aziridines, starting from vinyl azides and organolithium compounds.
Michael Andresini   +2 more
doaj   +1 more source

Pengaruh Pendekatan Inkuiri Terbimbing Dipadu dengan Diagram Alir terhadap Prestasi Belajar Siswa SMA [PDF]

open access: yes, 2015
This study aims to compare student achievement in teaching chemical equilibrium topics using a guided inquiry approach combined with and without flow charts. This research is a quasi-experimental study with a pretest-posttest control group design.
PAHRIAH, P. (PAHRIAH)
core   +3 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Numerical simulations of hydrogen auto-ignition in a turbulent co-flow of heated air [PDF]

open access: yes, 2009
Our research objective is the performance of Large-Eddy Simulation (LES) with the first order Conditional Moment Closure (CMC) of the test case experimentally studied by Markides and Mastorakos [1].
Lacor, Chris   +4 more
core  

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

open access: yesFEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang   +8 more
wiley   +1 more source

Window of opportunity – potential of increase in profitability using modular compact plants and micro-reactor based flow processing

open access: yesGreen Processing and Synthesis, 2012
Recently, much focus has been given to a new type of chemical production plant, with the aim of a much faster time-to-market (“50% idea”) and better cash-flow revenue. The main enabling technology is to have the plants pre-manufactured and assembled by a
Gürsel Iris Vural   +4 more
doaj   +1 more source

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