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Online since: June 2020
Authors: Darja Kostjuņina, Mara Jure, Inese Mieriņa, Dārta Zelma Skrastiņa
Skrastiņa1,c, and Māra Jure1,d 1Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. 
Structure-activity relationships of various cinnamic amides are rather less investigated.
It could be attributed to sterical hindrance in the structure of compound 1h.
Online since: May 2011
Authors: Fang Yu, Fang Yan Chen, Cheng Chen, Yu Bin Tang
There exist many hydrated cations in rectorite molecule structure.
As can be seen from Fig. 9, unloaded microsphere and Pb2+-loaded microsphere showed almost similar spectra, indicating that the structure of microspheres was not destroyed due to lead ions adsorption.
Shao: Environmental Chemistry (Peking University Press, Beijing 2005).
Wu: Physical Chemistry (China Higher Education Press, Beijing 1999).
Online since: November 2024
Authors: Karna Wijaya, Aldino Javier Saviola, Sri Sudiono, Niko Prasetyo, Rizqi Mahmudah
An Effective Synthesis of Phosphated Silica (PO4/SiO2) Catalyst and its Performance for Converting Ethanol into Diethyl Ether (DEE) Rizqi Mahmudah1,a, Aldino Javier Saviola1,b, Sri Sudiono1,c, Niko Prasetyo1,d, Karna Wijaya1,e* 1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
Qualitatively, the addition of phosphoric acid did not change the structure and crystallinity of silica, which was amorphous.
SEM image (b) indicates the absence of structural changes on the catalyst surface after the addition of phosphate ions, showing that the addition of phosphate ions to PS-4-400 did not change the structure and morphology of SiO2.
Mayer, Ethanol in Ullmann’s Encyclopedia of Industrial Chemistry, 5th ed.; Verlag-Chemie: Weinheim, Germany, A9 (1993) 587–653
Online since: January 2026
Authors: Volodymyr Khomenko, Asemgul Kalzhanova, Sara Ratova, Andrii Popov, Akshyryn Zholbassarova
Gel strength, which quantifies the fluid’s ability to form a gel-like structure when static, ensures solids suspension but must be optimized to avoid excessive resistance during flow initiation [6].
Compatibility with complex fluid chemistries, such as high-salinity brines or polymer-based muds, remains challenging due to sensor sensitivity to ionic interactions, suggesting a need for adaptive calibration algorithms.
Additionally, developing adaptive calibration algorithms to handle complex fluid chemistries, such as high-salinity brines, would improve accuracy and reduce calibration frequency (currently every 24 hours).
Manhura, Neural network analysis of safe life of the oil and gas industrial structures, J.
Online since: October 2006
Authors: Feng Huei Lin, Min Hua Chen, Chung King Hsu, Leszek Stobinski, Jerzy Peszke
Folic Acid Immobilized Ferrimagnetic DP-Bioglass to Target Tumor Cell for Cancer Hyperthermia Treatment Min-Hua Chen1, a , Chung-King Hsu2, b , Feng-Huei Lin3, c Leszek Stobinski 4, d , Jerzy Peszke 5, e 11, 2 Institute of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taiwan 3 Institute of Biomedical Engineering, National Taiwan University, Taiwan 4 Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland 5 Institute of Chemistry and Environmental Protection, Jan Dlugosz University, Poland a s3338012@ntut.edu.tw, bckhsu@ntut.edu.tw, cdouble@ha.mc.ntu.edu.tw, d lstob@gate.sinica.edu.tw, ej.peszke@rocketmail.com Keywords: Ferrimagnetic, DP-bioglass, polyethylene glycol, folic acid, immobilization.
The structure of the PEG-FA complex was further identified to confirm the amide linkage between PEG and FA by 1H NMR analysis.
The folic acid structure was confirmed in δ 8.64 CH (s), δ 7.61 CH (d), δ 6.64 CH (d), δ 4.48 NH (d), δ 2.3 CH2 (m), and δ 2.0 CH2 (m).
Online since: December 2024
Authors: Pornlada Pongmuksuwan, Wanlop Kitisatorn
Sensors connected to the device recorded the force transmitted through the surface to the underlying structure.
Mathew, Environmental impact of polyurethane chemistry.
Polyurethane Chemistry: Renewable Polyols and Isocyanates, American Chemical Society: Washington, DC, USA, 1380(2021) 393
Katabunyanont, Influence of temperature, time and crosslinking agent on structure and properties of polyurethane gel, Key Eng.
Online since: December 2025
Authors: Idowu Iyabo Olateju, Ibukunoluwa Magbagbeola Babarinde, Abdulwahab Giwa, Abel Adekanmi Adeyi, Lekan Taofeek Popoola
Because of its intrinsic properties, including as high surface area, porosity, and functionalised surface chemistry, it is extremely effective at absorbing both organic and inorganic pollutants.
Conclusion Biochar derived from Blighia sapida (Ackee Apple) leaves was successfully produced via pyrolysis with high carbon content, surface area, and mesoporous structure suitable for adsorption.
Freundlich, Colloid & capillary chemistry, Third Germ.
Xie, Structure and Adsorption Performance of Cationic Entermorpha prolifera Polysaccharide-Based Hydrogel for Typical Pollutants: Methylene Blue, Cefuroxime, and Cr (VI), Gels. 8(9) (2022) 546.
Online since: June 2022
Authors: Sigrid Rotzler, Martin Schneider-Ramelow
The washing procedures in the most widely used standard ISO 6330 differ from common household washing programs in length and structure [2, 4].
This call for gentle washing conditions is further emphasized by results from previous wash testing – revealing mechanical action during washing to be the overall most damaging of the four Sinner’s washing factors (duration, chemistry/biology, temperature, mechanical action) [1].
The structure of the proposed testing program (modeled after a silk/delicates household washing program) is the following: main wash cycle, followed by an intermediate spinning cycle (500 rpm), two rinsing cycles and a final spinning cycle (800 rpm).
Table 1: Washing programs for the assessment of cleaning capabilities program device duration mechanical action chemistry test program Electrolux Wascator 40 min 800 rpm spin cycle 40% on-time 60 ml Perwoll liquid detergent test program Electrolux Wascator 40 min 800 rpm spin cycle 40% on-time 60 g ECE SportivePlus Siemens IQ 700 47 min 800 rpm spin cycle 60% on-time [4] 60 g ECE reference program Easy Care Siemens IQ 700 59 min 1200 rpm spin cycle 90% on-time [4] 60 g ECE Table 1 gives an overview of the three different washing programs and the amount and type of detergent used.
Online since: April 2021
Authors: Arpita Shukla, S. Noyel Victoria, R. Manivannan
CMP process is an important part of both the process to impart a flat surface to the fabricated structure [3,4].
The next step of chip manufacturing includes the creation of contacts and dielectric structures as well.
Cook, Chemical mechanical planarization: slurry chemistry, materials, and mechanisms, Chem. 
Jairath, Initial study on copper CMP slurry chemistries
Online since: December 2013
Authors: T.S. Shafai, O. Oklobia
Sandwich structures comprising of ITO/ Cs2CO3/ P3HT: PCBM/ LiF/ Al (electron only device), and ITO/ PEDOT:PSS/ P3HT:PCBM/ Au (hole only device) are fabricated using spin coating for the investigations concerning electron and hole mobilities.
Figure 2, represents dark current density-voltage characteristics for electron only device comprising of sandwich structure of ITO/Cs2CO3/P3HT:PCBM/LiF/Al, with Cs2CO3 acting as the hole blocking layer.
Similar observation for hole only device using ITO/PEDOT:PSS/P3HT:PCBM/Au sandwich structure is shown in figure 2(b).
Sariciftci, Journal of Materials Chemistry, Vol. 16 (2006), p. 45-61 [8] O.