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Online since: July 2020
Authors: Li Ming Fang, Zheng Qiao, Jing Zhang, Gupta Dharmender Kumar
Introduction
Along with the development of science and technology, in order to prolong life people pay more and more attention to the research and development of life science, and actively explore the mysteries of life, study the origin and development of organism, biological tissue chemistry and physics and the relationship between structure and function of each organ, the mechanism of the metabolism of living organisms and the artificial life and artificial substitute organs, through the development of new drugs or change the dosage form to improve the efficacy of...
It is a frontier subject formed by the intersection of biology, medicine, chemistry, physics and materials science.
Some devices, such as cardiovascular scaffolds and tissue scaffolds, have fine structure and tiny size, which makes it difficult for some traditional methods, such as mold solidification forming, to complete the preparation of such devices efficiently.
In addition, the size of the molecular conjugate system, molecular plane structure and symmetry also affect the size of the two-photon absorption cross section.
It is a frontier subject formed by the intersection of biology, medicine, chemistry, physics and materials science.
Some devices, such as cardiovascular scaffolds and tissue scaffolds, have fine structure and tiny size, which makes it difficult for some traditional methods, such as mold solidification forming, to complete the preparation of such devices efficiently.
In addition, the size of the molecular conjugate system, molecular plane structure and symmetry also affect the size of the two-photon absorption cross section.
Online since: August 2020
Authors: Rungsima Yeetsorn, Thitinun Ungtrakul, Yaowaret Maiket
Experimental Study on Heat Dissipative Ability in Recycled Thermoplastic Vulcanizate and Reclaimed Rubber Composites
Rungsima Yeetsorn1,a*, Yaowaret Maiket2,b and Thitinun Ungtrakul3,c
1Department of Industrial Chemistry, Faculty of Applied Science,
King Mongkut’s University of Technology North Bangkok, Bangkok, 10800 (Thailand)
2Thai-French Innovation Institute, King Mongkut’s University of Technology North Bangkok, Bangkok, 10800 (Thailand)
3Department of Mechanical and Process Engineering, The Sirindhorn International Thai German
Graduate School of Engineering, King Mongkut’s University of Technology North Bangkok,
Bangkok, 10800 (Thailand)
arungsima.y@sci.kmutnb.ac.th, byaowaret.m@tfii.kmutnb.ac.th, cthitinun.u@tggs.kmutnb.ac.th
Keywords: Thermoplastic elastomer vulcanizate, Heat dissipative, Reclaimed rubber, Thermally conductive fillers, Aluminum nitride, Zinc oxide
Abstract.
It is due to rTPV contains less crystalline structure than rPP, then it turns to be fluid easier.
Much more vibration of amorphous structure may enhance heat dissipation in the composite.
Comparing the viscoelastic behaviour of produced composites with respect to the percentage of crystallinity, rTPV comprises of more crystalline structure than the RR does leading to gain higher loss modulus and energy dissipation than the those of RR.
This project has been performed in cooperation with The Department of Industrial Chemistry, The Sirindhorn International Thai German Graduate School of Engineering, and Thai-French Innovation Institute.
It is due to rTPV contains less crystalline structure than rPP, then it turns to be fluid easier.
Much more vibration of amorphous structure may enhance heat dissipation in the composite.
Comparing the viscoelastic behaviour of produced composites with respect to the percentage of crystallinity, rTPV comprises of more crystalline structure than the RR does leading to gain higher loss modulus and energy dissipation than the those of RR.
This project has been performed in cooperation with The Department of Industrial Chemistry, The Sirindhorn International Thai German Graduate School of Engineering, and Thai-French Innovation Institute.
Online since: December 2025
Authors: Ayse Sahin Yaglioglu, Esma Nur Gecer, Ilyas Yildiz, Nusret Genc, Cengiz Temiz, Yusuf Yanar, Ramazan Erenler
Fruit
Ayse Sahin Yaglioglu1,a*, Ramazan Erenler2,b , Esma Nur Gecer2,c ,
İlyas Yildiz2,d, Nusret Genc2,e, Cengiz Temiz3,f and Yusuf Yanar4,g
1Amasya University, Technical Sciences Vocational School, Department of Chemistry and Chemical Process Technology, Amasya, Turkey
2Gaziosmanpasa University, Faculty of Arts and Sciences, Department of Chemistry, Tokat, Turkey
3Zonguldak Bulent Ecevit University, Alapli Vocational High School, Department of Electronic and Automation, Zonguldak, Turkey
4Gaziosmanpaşa University, Faculty of Agriculture, Department of Plant Protection, Tokat, Turkey
aaysesahin1@gmail.com, brerenler@gmail.com mail, cesmanur.gecer@gop.edu.tr, dilyas.yildiz@igdir.edu.tr, enusret.genc@gop.edu.tr, fcengiztemiz@beun.edu.tr, gyusuf.yanar@gop.edu.tr
Keywords: Maclura pomifera, silver nanoparticles, antioxidant activity, green synthesis, natural products
Abstract.
The diffraction peaks observed at 2θ values of 38.25°, 44.42°, 64.59°, and 77.43° correspond to the (111), (200), (220), and (311) Bragg reflections, respectively, characteristic of the face-centered cubic (fcc) crystalline structure of silver (JCPDS No. 87-0720) [24].
It is well established that the molecular structure plays a critical role in the antioxidant properties of compounds, with only certain phenolic structures containing hydroxyl groups capable of donating hydrogen atoms or electrons to neutralize free radicals [35].
The diffraction peaks observed at 2θ values of 38.25°, 44.42°, 64.59°, and 77.43° correspond to the (111), (200), (220), and (311) Bragg reflections, respectively, characteristic of the face-centered cubic (fcc) crystalline structure of silver (JCPDS No. 87-0720) [24].
It is well established that the molecular structure plays a critical role in the antioxidant properties of compounds, with only certain phenolic structures containing hydroxyl groups capable of donating hydrogen atoms or electrons to neutralize free radicals [35].
Online since: September 2022
Authors: Dwi Siswanta, Sri Juari Santosa, Rahmat Basuki, Bambang Rusdiarso
An Adsorbent Based on Humic Acid-Like and Carboxymethyl Cellulose for Efficient Pollutant Removal from Synthetic Wastewater
Rahmat Basuki1,2,a, Bambang Rusdiarso2,b*, Sri Juari Santosa2,c,
and Dwi Siswanta3,d
1Department of Chemistry, Universitas Pertahanan RI, 16810, Kawasan IPSC, Bogor, Indonesia
2Department of Chemistry, Universitas Gadjah Mada, 55281, Yogyakarta, Indonesia
arhmtbsq@gmail.com, b,* brusdi_mipa@ugm.ac.id, csjuari@ugm.ac.id, ddsiswanta@ugm.ac.id
Keywords: horse dung humic acid, carboxymethyl cellulose, magnetite, adsorption, Pb(II) and Rhodamine B pollutant
Abstract.
Previous researchers found that iron ions in magnetite and the carboxylic acid groups of HA would easily form a stable structure complex [7,16].
The characteristic 2θ peak of HDHA at 21.9° indicates an increase in intensity towards a crystalline structure.
Magnetite peaks in the CMC-MHDHA XRD pattern were observed in the strong peaks at 30.253°, 35.6055°, 43.8914°, 53.7066°, 57.2253°, and 62.8094° and were along with miller indices values of (220), (311), (400), (422), (511) and (440), respectively confirms crystal faces of Fe3O4 spinel structure (JCPDS no. 00-019-0629) [20].
Previous researchers found that iron ions in magnetite and the carboxylic acid groups of HA would easily form a stable structure complex [7,16].
The characteristic 2θ peak of HDHA at 21.9° indicates an increase in intensity towards a crystalline structure.
Magnetite peaks in the CMC-MHDHA XRD pattern were observed in the strong peaks at 30.253°, 35.6055°, 43.8914°, 53.7066°, 57.2253°, and 62.8094° and were along with miller indices values of (220), (311), (400), (422), (511) and (440), respectively confirms crystal faces of Fe3O4 spinel structure (JCPDS no. 00-019-0629) [20].
Online since: April 2024
Authors: Paul Jhon G. Eugenio, Juvy J. Monserate, Arra Jane De Guzman, Eduardo L. Sanidad, Sunshine C. Asuncion, Roseanne G. Dela Cruz, Paulo B. Patricio, Benedick A. Peralta, Harvey D. Torres
Monserate1,i
1Department of Chemistry, College of Science, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines
2Bartolome Sangalang National High School, Guimba, Nueva Ecija 3115 Philippines
a*pauljhoneugenio@clsu.edu.ph, bdeguzmanarrajane@gmail.com, cedsanidad10@gmail.com, dasuncion.sunshine@clsu2.edu.ph, eroseannejoydelacruz@gmail.com, fpaulobautistapatricio@gmail.com, gperaltabenedick75@gmail.com, htorresvey@gmail.com ijuvymonserate@clsu.edu.ph
Keywords: gold nanoparticles, green Synthesis, Allium tuberosum, saponin, zeta potential, phytochemical analysis
Abstract.
Phytochemical Analysis of A. tuberosum In order to identify the active phytoconstituents present in A. tuberosum leaves, a qualitative phytochemical analysis was carried out at the CLSU Chemistry Analytical Service Laboratory.
The presence of saponins in the AuNP structure not only provides colloidal stability but also effectively prevents nanoparticle agglomeration.
However, an intriguing question arises regarding the fiber-like structures observed among these nanoparticles and their resemblance to tiny rods.
These fiber-like structures are indeed nanorods, characterized by an elongated shape reminiscent of miniature rods.
Phytochemical Analysis of A. tuberosum In order to identify the active phytoconstituents present in A. tuberosum leaves, a qualitative phytochemical analysis was carried out at the CLSU Chemistry Analytical Service Laboratory.
The presence of saponins in the AuNP structure not only provides colloidal stability but also effectively prevents nanoparticle agglomeration.
However, an intriguing question arises regarding the fiber-like structures observed among these nanoparticles and their resemblance to tiny rods.
These fiber-like structures are indeed nanorods, characterized by an elongated shape reminiscent of miniature rods.
Online since: February 2024
Authors: Raa Khimi Shuib, Lai Mei Fen, Noor Faezah Mohd Sani
Reprocessable and Recyclable Self-Healing Natural Rubber/ Carbon Black Composite Based on Metal Thiolate Ionic Network
Noor Faezah Mohd Sani1,2,a, Lai Mei Fen1,b and Raa Khimi Shuib1,c *
1School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
2 Department of Chemistry, Faculty of Applied Sciences, Universiti Teknologi MARA, Perak Branch, Tapah Campus, 35400 Perak, Malaysia
afaezah125@uitm.edu.my, bmeifen@student.usm.my, c raakhimi@usm.my
Keywords: self-healing, rubber, composite, recycling, reprocessing
Abstract.
It compensates the irreversible ruptures of the virgin crosslinking structures in the rearrangement, which makes the reconstructed networks stronger.
Araya-Hermosilla et al., “Thermally reversible rubber-toughened thermoset networks via Diels-Alder chemistry,” Eur.
Garcia, “Effect of the polymer structure on the viscoelastic and interfacial healing behaviour of poly(urea-urethane) networks containing aromatic disulphides,” Eur.
Kohjiya, “Reinforcement Mechanism of Carbon Black (CB) in Natural Rubber Vulcanizates: Relationship Between CB Aggregate and Network Structure and Viscoelastic Properties,” Polym. - Plast.
It compensates the irreversible ruptures of the virgin crosslinking structures in the rearrangement, which makes the reconstructed networks stronger.
Araya-Hermosilla et al., “Thermally reversible rubber-toughened thermoset networks via Diels-Alder chemistry,” Eur.
Garcia, “Effect of the polymer structure on the viscoelastic and interfacial healing behaviour of poly(urea-urethane) networks containing aromatic disulphides,” Eur.
Kohjiya, “Reinforcement Mechanism of Carbon Black (CB) in Natural Rubber Vulcanizates: Relationship Between CB Aggregate and Network Structure and Viscoelastic Properties,” Polym. - Plast.
Online since: July 2021
Authors: Viktor Malau, Wisnu Hakiki
Ferrite dominates the micro structure and looks brighter while pearlite is darker.
The smaller the carbon content, the more dominant the ferrite structures.
Ebenso, Microwave and ultrasound irradiations for the synthesis of environmentally sustainable corrosion inhibitors: An overview, Sustainable Chemistry and Pharmacy 10, Elsevier, (2018), 134–147
Ramezanzadeh, Use of Rosa canina fruit extract as a green corrosion inhibitor for mild steel in 1 M HCl solution: A complementary experimental, molecular dynamics and quantum mechanics investigation, Journal of Industrial and Engineering Chemistry 69, Elsevier, (2019), 18–31
Cao, Investigation on structure and corrosion resistance of complex inorganic passive film based on graphene oxide, Corrosion Science 150, (2019), 64–75
The smaller the carbon content, the more dominant the ferrite structures.
Ebenso, Microwave and ultrasound irradiations for the synthesis of environmentally sustainable corrosion inhibitors: An overview, Sustainable Chemistry and Pharmacy 10, Elsevier, (2018), 134–147
Ramezanzadeh, Use of Rosa canina fruit extract as a green corrosion inhibitor for mild steel in 1 M HCl solution: A complementary experimental, molecular dynamics and quantum mechanics investigation, Journal of Industrial and Engineering Chemistry 69, Elsevier, (2019), 18–31
Cao, Investigation on structure and corrosion resistance of complex inorganic passive film based on graphene oxide, Corrosion Science 150, (2019), 64–75
Online since: October 2011
Authors: Yoshihiko Ninomiya, Qun Ying Wang, Ming Jun Ji, Zhong Bing Dong
Effects of mineral transformations on the reduction of PM2.5
during the combustion of coal blends
Mingjun Ji 1,a, Yoshihiko Ninomiya 2,b , Zhongbing Dong 3,c and Qunying Wang 4,d
1 School of Chemical Engineering, Anhui university of Science and Technology, No168.Shungen Road, Huainan, Anhui Province,232001 China
2 Department of Applied Chemistry, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8507, Japan
3 School of Chemical Engineering, Anhui university of Science and Technology, No168.Shungen Road, Huainan, Anhui Province,232001 China
4 Department of Applied Chemistry, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8507, Japan
amjji@aust.edu.cn, bninomiya@isc.chubu.ac.jp, cdongzb@huainan.gov.cn, dqywang@isc.chubu.ac.jp
Keywords: PM2.5; Coal blends; Mineral transformations
Abstract.
A part of the ash particles have sintered structure, which implies that they undergone melting and condensation.According to the elemental compositions of PM2.5, shown in Fig.3c, the morphological differences between the two kinds of PM2.5 are attributed to Si,Al,Ca,Mg content.
The fine particles of Al-Si or Si-rich of the cenosphere structures in Fig. 7a and b reacts with the coarse Ca-Mg-Al-Si particles.
These figures provide the shape-related structure formed from liquid or partial liquid phase.
A part of the ash particles have sintered structure, which implies that they undergone melting and condensation.According to the elemental compositions of PM2.5, shown in Fig.3c, the morphological differences between the two kinds of PM2.5 are attributed to Si,Al,Ca,Mg content.
The fine particles of Al-Si or Si-rich of the cenosphere structures in Fig. 7a and b reacts with the coarse Ca-Mg-Al-Si particles.
These figures provide the shape-related structure formed from liquid or partial liquid phase.
Online since: October 2006
Authors: Susana Simal, J. Bon, Á. Castell-Palou, J.A. Cárcel, Carmen Rosselló
Rosselló
1,e
1
Department of Chemistry.
The complex cellular structure of food acts as a semi permeable membrane which offers the dominant resistance to the process.
Thus, water moves from inside the solid towards its surface and from there, to the concentrated solution meanwhile the solute moves in the reverse direction, from the solution to the surface of the solid, and, once there, penetrates the structure of the solid [8].
The comparison of estimated water and solute diffusivities during dehydration is difficult due to the high variability of food composition and physical structure and also due to the different methods and models employed to estimate diffusivity [15].
Vajda: Advanced Scientific Computing in BASIC with Applications in Chemistry, Biology and Pharmacology.
The complex cellular structure of food acts as a semi permeable membrane which offers the dominant resistance to the process.
Thus, water moves from inside the solid towards its surface and from there, to the concentrated solution meanwhile the solute moves in the reverse direction, from the solution to the surface of the solid, and, once there, penetrates the structure of the solid [8].
The comparison of estimated water and solute diffusivities during dehydration is difficult due to the high variability of food composition and physical structure and also due to the different methods and models employed to estimate diffusivity [15].
Vajda: Advanced Scientific Computing in BASIC with Applications in Chemistry, Biology and Pharmacology.
Online since: July 2021
Authors: Vitalii Kovalenko, Yuriy Tsapko, Natalia Ivashyna, Ruslan Likhnyovskyi
Introduction
At present, fire protection of wood material and wooden structures is still an important element of fire protection in construction.
They do not have a fibrous structure, and the spectra are easier to interpret as individual substances than wood material as a whole.
Coniferous wood material has a relatively simple structure and 90-95% consists of tracheids, long thin cells with flat or spindle-shaped closed ends.
The chemistry of wood and its main components, Altai publishing house state university, Barnaul, 2002 [in Russian] [12] Research methods wood and its derivaties, Altai publishing house state university, Barnaul, 2002 [in Russian]
Chemistry, Ultrastructure, Reaction, Forestry industry, Moskow, 1988 [in Russian].
They do not have a fibrous structure, and the spectra are easier to interpret as individual substances than wood material as a whole.
Coniferous wood material has a relatively simple structure and 90-95% consists of tracheids, long thin cells with flat or spindle-shaped closed ends.
The chemistry of wood and its main components, Altai publishing house state university, Barnaul, 2002 [in Russian] [12] Research methods wood and its derivaties, Altai publishing house state university, Barnaul, 2002 [in Russian]
Chemistry, Ultrastructure, Reaction, Forestry industry, Moskow, 1988 [in Russian].