Results 11 to 20 of about 4,869,428 (268)

Catalysis in the alkylation reaction of 1-naphthol with epichlorohydrin [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
Two new and improved procedures were developed for the synthesis of 1-(1-naphthyloxy)-2,3-epoxypropane as an important intermediate in the production of the beta-blocker and antioxidant 1-[(1-methylethyl)amino]-3-(1-naphthyloxy)- 2-propanol (propranolol).
Jovanović Slobodanka   +5 more
doaj   +3 more sources

Modeling System of Systems configurations [PDF]

open access: yes2018 13th Annual Conference on System of Systems Engineering (SoSE), 2018
System of Systems (SoS) engineering is a challenging research direction because an SoS has distinctive characteristics in comparison to distributed systems. UPMD and SysML provide adequate frameworks and notations which help in the process of modeling and architecting SoS.
Franck Petitdemange   +2 more
openaire   +1 more source

System models and model classification in tribological system development [PDF]

open access: yesSystems Engineering, 2020
Abstract Current requirements for the reduction of CO 2 emissions, as well as for the improvement of durability and reliability of sociotechnical systems such as passenger cars, lead to an increase in development effort in order to increase efficiency and system lifetime ...
Clemens Faustmann   +4 more
openaire   +1 more source

Impacts of Soil Freeze–Thaw Process and Snow Melting Over Tibetan Plateau on Asian Summer Monsoon System: A Review and Perspective

open access: yesFrontiers in Earth Science, 2020
Surface diabatic heating over the Tibetan Plateau (TP) is crucial for the onset and development of Asian summer monsoon (ASM), which is closely connected with the snow melting and freeze–thaw (SM-FT) processes in spring.
Chenghai Wang   +5 more
doaj   +1 more source

Convective/Stratiform Precipitation Classification Using Ground-Based Doppler Radar Data Based on the K-Nearest Neighbor Algorithm

open access: yesRemote Sensing, 2019
Stratiform and convective rain types are associated with different cloud physical processes, vertical structures, thermodynamic influences and precipitation types. Distinguishing convective and stratiform systems is beneficial to meteorology research and
Zhida Yang, Peng Liu, Yi Yang
doaj   +1 more source

An Approach for Assimilating FY4 Lightning and Cloud Top Height Data Using 3DVAR

open access: yesFrontiers in Earth Science, 2020
The vertical distribution of water vapor affects the intensity of the updraft, downdraft and cold pool in convection, so how to adjust lightning proxy-humidity in the vertical direction is very important for convective scale numerical weather prediction (
Peng Liu   +5 more
doaj   +1 more source

A randomized controlled trial protocol for people with traumatic brain injury enrolled in a healthy lifestyle program (GLB-TBI)

open access: yesContemporary Clinical Trials Communications, 2019
Weight gain is prevalent among people with traumatic brain injury (TBI) and may be attributable to environmental or injury-specific factors such as mobility impairment, endocrine dysfunction, behavioral and emotional disorders, and sensory loss.
Simon Driver   +5 more
doaj   +1 more source

Fault modelling for systems of systems [PDF]

open access: yes2013 IEEE Eleventh International Symposium on Autonomous Decentralized Systems (ISADS), 2013
This paper proposes a systematic model-based approach to the architectural description of faults and fault tolerance mechanisms in systems of systems (SoSs). The challenges of engineering dependable SoSs motivate a proposal for the view elements that would be needed to support a fault tolerance profile for SoSs using the Systems Modelling Language ...
Zoe Andrews   +3 more
openaire   +1 more source

Fluorescence-Based On-Resin Detection of Three Model Proteases

open access: yesChemosensors, 2021
A new approach to on-resin detection of three model proteases (trypsin, chymotrypsin, and thrombin) has been developed, while at the same time already described methodology for simultaneous detection of two enzymes (trypsin and chymotrypsin) has been ...
David Milićević, Jan Hlaváč
doaj   +1 more source

Simulation Uncertainty of Near-Surface Wind Caused by Boundary Layer Parameterization Over the Complex Terrain

open access: yesFrontiers in Energy Research, 2020
Accurate prediction of near-surface wind based on numerical weather prediction models is essential to promote efficient wind energy harvesting. In this study, the performances of different Boundary Layer (BL) schemes in Weather Research and Forecasting ...
Luyuan Chen   +3 more
doaj   +1 more source

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