scholarly journals Lamellae—Parking Garage Structure—Lamellae Transition in Densely Grafted Layers of Amphiphilic Homopolymers: Impact of Polymerization Degree

ACS Omega ◽  
2018 ◽  
Vol 3 (10) ◽  
pp. 12967-12974 ◽  
Author(s):  
Alexei A. Lazutin ◽  
Valentina V. Vasilevskaya
PCI Journal ◽  
1991 ◽  
Vol 36 (3) ◽  
pp. 34-39
Author(s):  
Andrew J. Zekany ◽  
Ede Vessey ◽  
William M. Bollinger
Keyword(s):  

2012 ◽  
Vol 27 (2) ◽  
pp. 174-178
Author(s):  
Hang WU ◽  
Li-Fang ZHANG ◽  
Wei BAI ◽  
Chi MA ◽  
Cheng-Dong XIONG

2017 ◽  
Vol 54 (3) ◽  
pp. 447-452 ◽  
Author(s):  
Adriana Mariana Bors ◽  
Nicoleta Butoi ◽  
Alina Ruxandra Caramitu ◽  
Virgil Marinescu ◽  
Iosif Lingvay

Polyethylene (PE) insulations have a wide applicability in the insulation of both underground pipelines and underground power cables. In this context, by coupled techniques of thermal analysis (TG/DTG+DTA) and microbiological determinations, have been studied thermooxidability and resistance to moulds action of some polyethylene sorts. Following the processing of the experimental data obtained by thermal analysis it was found that during the applied heat treatment (100 grd C), in the first approx. 380 h, there is a growth of LDPE (low density polyethylene) polymerization degree by elongation of the aliphatic chains, after which the predominant process consists in the structure crosslinking. For MDPE (mean density polyethylene) samples, during the thermal treatment applied, it was found that the crosslinking degree of polyethylene (PE) increased without significant molecular weight change (with all the related consequences of increasing the weight of the tertiary and quaternary carbon atoms in the molecule). Microbiological determinations have highlighted that the resistance to filamentous fungal action of LPDE is higher than that of the investigated MDPE. It was found that after heat treatment applied (1000 h and 100 oC), both at LDPE and at MDPE, decreases the resistance to moulds action is decreased. It has also been found that moulds action resistance is substantially decreased when inoculated culture media and PE samples are exposed to an alternative electric field of 50 Hz - 6 Vrms/cm.


1979 ◽  
Vol 44 (1) ◽  
pp. 167-173 ◽  
Author(s):  
Slavomír Bystrický ◽  
Rudolf Kohn ◽  
Tibor Sticzay

The CD spectra of aqueous solutions of homopolymeric sodium oligogalacturonates and D-galacturonans of polymerization degree n = 1-64, as well as lower calcium oligogalacturonates (n = 1-5) were measured. Chiroptic properties were correlated with the polymerization degree in terms of optical superposition of monomeric unit increments. Interpretation of obtained data, respecting further physicochemical properties entitles to conclude that the conformation of macromolecules of D-galacturonan in solution is close to helical structure.


2021 ◽  
Author(s):  
Ewa Żary-Sikorska ◽  
Bartosz Fotschki ◽  
Krzysztof Kołodziejczyk ◽  
Adam Jurgoński ◽  
Monika Kosmala ◽  
...  

In the present experiment it was hypothesised that dietary strawberry ellagitannin-rich extracts would mitigate negative consequences associated with consumption.


Author(s):  
Faezeh Mohammadi ◽  
Mohammad Hassan Ehrampoush ◽  
Farimah Shamsi ◽  
Seyed Ali Yasini Ardakani ◽  
Neda Mollakhalili-Meybodi

2020 ◽  
Vol 4 (3) ◽  
pp. 20 ◽  
Author(s):  
Giuseppe Ciaburro

Parking is a crucial element in urban mobility management. The availability of parking areas makes it easier to use a service, determining its success. Proper parking management allows economic operators located nearby to increase their business revenue. Underground parking areas during off-peak hours are uncrowded places, where user safety is guaranteed by company overseers. Due to the large size, ensuring adequate surveillance would require many operators to increase the costs of parking fees. To reduce costs, video surveillance systems are used, in which an operator monitors many areas. However, some activities are beyond the control of this technology. In this work, a procedure to identify sound events in an underground garage is developed. The aim of the work is to detect sounds identifying dangerous situations and to activate an automatic alert that draws the attention of surveillance in that area. To do this, the sounds of a parking sector were detected with the use of sound sensors. These sounds were analyzed by a sound detector based on convolutional neural networks. The procedure returned high accuracy in identifying a car crash in an underground parking area.


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