pore analysis
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2021 ◽  
Vol 303 ◽  
pp. 124558
Author(s):  
Yanming Liu ◽  
Shu Jian Chen ◽  
Kwesi Sagoe-Crentsil ◽  
Wenhui Duan

Membranes ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 752
Author(s):  
Mahdi Bourassi ◽  
Mariia Pasichnyk ◽  
Oscar Oesch ◽  
Swati Sundararajan ◽  
Tereza Trávničková ◽  
...  

Pharmaceutical wastewater pollution has reached an alarming stage, as many studies have reported. Membrane separation has shown great performance in wastewater treatment, but there are some drawbacks and undesired byproducts of this process. Selective membranes could be used for pollutant investigation sensors or even for pollutant recovery. The polydimethylsiloxane (PDMS) membrane was first tested on separated and mixed antibiotic (ATB) water solutions containing sulfamethoxazole (SM), trimethoprim (TMP), and tetracycline (TET). Then, the bare and ultra-violet grafted (UV-grafted) PDMS membranes (MMA-DMAEMA 10, GMA-DMAEMA 5, and GMA-DMAEMA 10) were tested in tramadol (TRA) separation, where the diffusion coefficient was evaluated. Finally, the membranes were tested in pertraction with a mixture of SM, TMP, TET, and TRA. The membranes were characterized using the following methods: contact angle measurement, FTIR, SEM/EDX, and surface and pore analysis. The main findings were that TET was co-eluted during mixed ATB pertraction, and GMA-DMAEMA 5 was found to selectively permeate TRA over the present ATBs.


2021 ◽  
Vol 58 (4) ◽  
pp. 193-203
Author(s):  
R. Scheck ◽  
M. Speicher ◽  
D. Willer

Abstract Vibratory polishing is a rather straightforward technique for the preparation of microstructures for microscopic examinations which would otherwise be difficult to prepare. This work will present a number of practical application examples. For instance, this technique is well-suited for soft materials, pore analysis, interference layer metallography and scanning electron microscopy (SEM) examinations using electron backscatter diffraction (EBSD) as well as electron channeling contrast imaging (ECCI).


Silicon ◽  
2021 ◽  
Author(s):  
S. J. K. Melele ◽  
Hervé Kouamo Tchakouté ◽  
C. Banenzoué ◽  
E. L. Hseumou ◽  
C. P. Nanseu-Njiki ◽  
...  

2019 ◽  
Vol 54 (8) ◽  
pp. 6053-6065 ◽  
Author(s):  
Heeje Seong ◽  
Seungmok Choi ◽  
Katarzyna E. Matusik ◽  
Alan L. Kastengren ◽  
Christopher F. Powell

2018 ◽  
Vol 24 ◽  
pp. 307-315 ◽  
Author(s):  
Göran Flodberg ◽  
Henrik Pettersson ◽  
Li Yang

Author(s):  
Antonello A Barresi ◽  
Luigi C Capozzi ◽  
Andrea Arsiccio ◽  
Amelia C Sparavigna ◽  
Roberto Pisano

In a freeze drying process, the freezing step determines the pore size distribution within the product, which, in turn, affects the sublimation rate. Traditionally, pore analysis is carried out on SEM images by means of a manual, time-consuming approach. Here, an image segmentation technique was used to automatize this process and improve its reliability. A 3D structure of the cake was then reconstructed from the distribution of the super-pixels. We show that the approach herein proposed can remarkably improve prediction of the sublimation rate with respect to traditional methods. Keywords: Freezing; Freeze-Drying; Image Segmentation; 3D Reconstruction


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