Article
Green & Sustainable Science & Technology
Jinyu Li, Baozhen Li, Jinshui Yang
Summary: The study found that UTEX 2341 algae cells have good self-flocculation ability, improving microalgae harvesting efficiency. By investigating 16 freeze-dried microalgae powder samples cultured under different conditions, it was discovered that they can maintain stable flocculation efficiency under different pH and temperature conditions.
Article
Biology
Sang-Hyuck Park, John A. Kyndt, Judith K. Brown
Summary: (English Summary:)
The resequencing of the chloroplast genome of Auxenochlorella protothecoides UTEX 25 revealed important features such as genome size, GC content, and gene organization similar to other Chlorella species. This study also identified genes related to photosynthetic efficiency, which are of interest in the biofuel field. The phylogenetic analysis showed a close relationship to Prototheca cutis and Chlorella species. Additionally, the presence of virus-like sequences suggested the possibility of horizontal gene transfer.
Article
Biochemical Research Methods
Umer Sajjad, Finn Klingbeil, Findan Block, Rasmus B. Hollander, Shehroz Bhatti, Enno Lage, Jeffrey McCord
Summary: The research focuses on achieving high efficiency separation for biological analytes in biomedical applications by selectively and directionally controlling the movement of microbeads through adjusting magnetic fields. Despite significant size and magnetic content distributions within microbead populations, high separation efficiencies are demonstrated.
Article
Plant Sciences
Ece Polat, Mahmut Altinbas
Summary: This study focuses on identifying microalgal growth conditions that can enhance lipid and biomass yields, improve biodiesel quality, and increase resistance to stressors. Various stressors, such as hormones, fungicides, and organic solvents, along with glycerol as a carbon source, can promote microalgal biomass productivity and lipid quality for biodiesel production.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Environmental Sciences
Chao Xing, Jinyu Li, Hongli Yuan, Jinshui Yang
Summary: This study investigated the response mechanism of microalgae under heat and cold stress. The results showed that heat stress led to a significant increase in reactive oxygen species, while cold stress initially increased and then decreased reactive oxygen species. Key elements such as superoxide dismutase and nitric oxide increased under heat stress, while proline and heat shock transcriptional factor increased under cold stress. This study provides a basis for understanding the response mechanism of microalgae to temperature stress and improving their tolerance to temperature stress.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Kristina Gerulova, Alexandra Kucmanova, Zuzana Sanny, Zuzana Garaiova, Eugen Seiler, Maria Caplovicova, L'ubomir Caplovic, Marian Palcut
Summary: Magnetic separation of microalgae using magnetite is a fast, reliable, low cost, energy-efficient, and environmentally friendly method. The use of PEI-coated Fe3O4 nanoparticles significantly enhances the harvesting efficiency, especially in acidic solutions, reaching up to 99% efficiency.
Article
Environmental Sciences
Luyanda L. Ndlela, Peter Schroeder, Bettina Genthe, Catarina Cruzeiro
Summary: The intensive use of antibiotics has led to the release of large amounts of antibiotic residues into aquatic systems due to inefficient wastewater treatment. Conventional treatments cannot effectively remove emerging contaminants like antibiotics. Algae treatment shows promise as a cost-effective and eco-friendly solution. This study demonstrates the potential of using well-established algal consortia for the removal of antibiotics in wastewater in a developing country context.
Article
Biochemistry & Molecular Biology
Rong Zhou, Ya Qian, Zhengyu Lei, Yufang Tang, Yuqin Li
Summary: The objective of this study was to investigate the production, physicochemical characteristics, and anti-inflammatory activities of exopolysaccharides from salinity-induced Auxenochlorella protothecoides. The results showed that 10 parts per thousand salinity manipulation resulted in higher exopolysaccharide production. Two exopolysaccharides, ACPEPS1A and ACPEPS2A, were purified and characterized. ACPEPS1A mainly consisted of galactose, while ACPEPS2A was a heteropolysaccharide composed of galactose and rhamnose. Both exopolysaccharides exhibited anti-inflammatory properties by inhibiting the inflammatory response in lipopolysaccharide-induced cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Computer Science, Interdisciplinary Applications
Maan Al-Zareer
Summary: This paper introduces a microfluidic separation device based on hydrodynamic focusing, equipped with dual neodymium magnets for positive magnetophoretic microparticles and cell separation. By minimizing damage to the particles through different inlet flow rates, efficient separation of particles is achieved.
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
(2022)
Article
Biotechnology & Applied Microbiology
Guanlan Xing, Jinyu Li, Wenli Li, Sin Man Lam, Hongli Yuan, Guanghou Shui, Jinshui Yang
Summary: This study identified AP2 superfamily and R2R3-MYB family genes in the green algae A. protothecoides and analyzed their expression profiles under temperature stress. It found intrinsic associations between these transcription factors and the regulatory mechanism of lipid metabolism, providing insights into their roles in lipid adjustments and response to temperature stress. These findings contribute to biotechnological development in microalgae-based biofuel production and enhance understanding of photosynthetic organisms' adaptive mechanism to temperature stress.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Chemistry, Multidisciplinary
Carlota Delso, Aude Silve, Ruediger Wuestner, Natalja Nazarova, Ignacio Alvarez, Javier Raso, Wolfgang Frey
Summary: This study focuses on under-investigated processing parameters of pulsed electric field (PEF) treatment for efficient lipid extraction from microalgae, such as media pH, pulse application, and incubation protocols. The results show that medium pH is critical in the final electroporation and lipid extraction yields, and should be considered in further studies.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Microbiology
Evagelina Korozi, Vasiliki Tsagou, Io Kefalogianni, Giorgos Markou, Dimitris Antonopoulos, Lambis Chakalis, Yannis Kotzamanis, Iordanis Chatzipavlidis
Summary: By studying the cultivation of Auxenochlorella protothecoides on crude glycerol under heterotrophic and mixotrophic conditions, it was found that heterotrophy promotes better growth and efficiency, as well as the accumulation of proteins and lipids.
Article
Biotechnology & Applied Microbiology
Ralf Straessner, Marcell Nikolausz, Aude Silve, Natalja Nazarova, Ruediger Wuestner, Ioannis Papachristou, Sahar Akaberi, Klaus Leber, Georg Mueller, Wolfgang Frey
Summary: This study proposes a cascade processing method for utilizing lipid-rich microalgae Auxenochlorella protothecoides. The method includes pre-concentration of biomass, pretreatment using pulsed electric fields (PEF), separation of aqueous fraction for recovery of valuable components, and lipid extraction from the remaining wet pellet. The remaining biomass is then subjected to anaerobic digestion (AD) for biogas production. The study demonstrates the feasibility and potential of this approach for industrial implementation.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Plant Sciences
Giorgos Markou, Alexandros Diamantis, Evagelina Korozi, Vasiliki Tsagou, Io Kefalogianni, Iordanis Chatzipavlidis
Summary: Mixotrophic conditions were less favorable for the growth of Auxenochlorella protothecoides compared to heterotrophy, but had significantly higher growth rates than photoautotrophy. High peptone concentration resulted in decreased growth rates and impacted the biochemical composition of the algae.
Article
Green & Sustainable Science & Technology
Sujeet Kesharvani, Tikendra Nath Verma, Gaurav Dwivedi
Summary: The development and implementation of green alternatives is crucial for power and transportation systems. Microalgae are considered favorable for producing biodiesel and using it in diesel engines. This study investigated the combustion characteristics of a diesel engine using different compression ratios and biodiesel blends. The results showed that higher compression ratios led to increased combustion efficiency and reduced emissions, with CPB20 blend performing the best among the tested blends.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)