Journal articles: 'LMO'

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Gadani, Keval, Davit Dhruv, Zalak Joshi, Hetal Boricha, K. N. Rathod, M. J. Keshvani, N. A. Shah, and P. S. Solanki. "Transport properties and electroresistance of a manganite based heterostructure: role of the manganite–manganite interface." Physical Chemistry Chemical Physics 18, no. 26 (2016): 17740–49. http://dx.doi.org/10.1039/c6cp02053d.

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In this paper, we report the results of the investigations on the transport properties performed across the manganite–manganite interface in the LaMnO_3−δ/La_0.7Ca_0.3MnO₃/LaAlO₃ (LMO/LCMO/LAO) heterostructure.

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Tuccillo, Mariarosaria, Oriele Palumbo, Michele Pavone, Ana Belen Muñoz-García, Annalisa Paolone, and Sergio Brutti. "Analysis of the Phase Stability of LiMO2 Layered Oxides (M = Co, Mn, Ni)." Crystals 10, no. 6 (June 20, 2020): 526. http://dx.doi.org/10.3390/cryst10060526.

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Transition-metal (TM) layered oxides have been attracting enormous interests in recent decades because of their excellent functional properties as positive electrode materials in lithium-ion batteries. In particular LiCoO2 (LCO), LiNiO2 (LNO) and LiMnO2 (LMO) are the structural prototypes of a large family of complex compounds with similar layered structures incorporating mixtures of transition metals. Here, we present a comparative study on the phase stability of LCO, LMO and LNO by means of first-principles calculations, considering three different lattices for all oxides, i.e., rhombohedral (hR12), monoclinic (mC8) and orthorhombic (oP8). We provide a detailed analysis—at the same level of theory—on geometry, electronic and magnetic structures for all the three systems in their competitive structural arrangements. In particular, we report the thermodynamics of formation for all ground state and metastable phases of the three compounds for the first time. The final Gibbs Energy of Formation values at 298 K from elements are: LCO(hR12) −672 ± 8 kJ mol−1; LCO(mC8) −655 ± 8 kJ mol−1; LCO(oP8) −607 ± 8 kJ mol−1; LNO(hR12) −548 ± 8 kJ mol−1; LNO(mC8) −557 ± 8 kJ mol−1; LNO(oP8) −548 ± 8 kJ mol−1; LMO(hR12) −765 ± 10 kJ mol−1; LMO(mC8) −779 ± 10 kJ mol−1; LMO(oP8) −780 ± 10 kJ mol−1. These values are of fundamental importance for the implementation of reliable multi-phase thermodynamic modelling of complex multi-TM layered oxide systems and for the understanding of thermodynamically driven structural phase degradations in real applications such as lithium-ion batteries.

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Zhang, Zhihua, Xin Wang, and Daren Lyu. "Estimation of Moist Atmospheric Profiles from Refraction and Attenuation Measurements by Using Centimeter and Millimeter Wave Links between LEO Satellites." Remote Sensing 15, no. 2 (January 8, 2023): 391. http://dx.doi.org/10.3390/rs15020391.

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Microwave occultation using centimeter and millimeter wave links between low Earth orbit (LEO) satellites provide a potential way to estimate the moist atmospheric profiles based on refraction and attenuation measurements, which is called the LEO-LEO microwave occultation (LMO) technique. It has not yet been implemented in orbit. In this paper, we analyzed the attenuation properties at different heights of centimeter and millimeter waves based on simulations. The observing capabilities with different frequency combinations at the X, K, and M bands were analyzed. The results show that LMO may improve the retrieval accuracy of bending angles above 35 km. By using several appropriate frequencies at the X+K+M band, water vapor profiles from the near-surface to the lower stratosphere (~24 km) can be obtained. When the M-band frequencies were added, the temperature retrieval accuracy does not change obviously, but the accuracy of water vapor retrieval can significantly improve above 15 km, especially at about 17–24 km, and the RMS errors decrease from over 20% to less 10%. For promoting the LMO mission in the real world, a frequency combination at the X+K band is proposed, which can provide the potential to observe the temperature profiles at about 2.5–50 km and water vapor profiles at about 2.5–15 km accurately under clear and cloudy conditions. This study demonstrates that LMO can greatly extend the capabilities of the radio occultation technique and improve our ability to measure the moist atmospheric profiles globally.

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Chen, Dong, Guangbiao Zhang, Zhenxiang Cheng, Shuai Dong, and Yuanxu Wang. "Robust manipulation of magnetism in LaAO3/BaTiO3 (A = Fe, Mn and Cr) superstructures by ferroelectric polarization." IUCrJ 6, no. 2 (January 15, 2019): 189–96. http://dx.doi.org/10.1107/s205225251801624x.

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Robust control of magnetism is both fundamentally and practically meaningful and highly desirable, although it remains a big challenge. In this work, perovskite oxide superstructures LaFeO3/BaTiO3 (LFO/BTO), LaMnO3/BaTiO3 (LMO/BTO) and LaCrO3/BaTiO3 (LCO/BTO) (001) are designed to facilitate tuning of magnetism by the electric field from ferroelectric polarization, and are systemically investigated via first-principles calculations. The results show that the magnetic ordering, conductivity and exchange interactions can be controlled simultaneously or individually by the reorientation of the ferroelectric polarization of BTO in these designed superstructures. Self-consistent calculations within the generalized gradient approximation plus on-site Coulomb correction did not produce distinct rotations of oxygen octahedra, but there were obvious changes in bond length between oxygen and the cations. These changes cause tilting of the oxygen octahedra and lead to spin, orbital and bond reconstruction at the interface, which is the structural basis responsible for the manipulation. With the G-type antiferromagnetic (G-AFM) ordering unchanged for both ±P cases, a metal–insulator transition can be observed in the LFO/BTO superstructure, which is controlled by the LFO thin film. The LMO/BTO system has A-type antiferromagnetic (A-AFM) ordering with metallic behavior in the +P case, while it shifts to a half-metallic ferromagnetic ordering when the direction of the polarization is switched. LCO/BTO exhibits C-type antiferromagnetic (C-AFM) and G-AFM orders in the +P and −P cases, respectively. The three purpose-designed superstructures with robust intrinsic magnetoelectric coupling are a particularly interesting model system that can provide guidance for the development of this field for future applications.

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Wang, Jiaxi, Xinyi Fan, Zhijie Chen, Chenwei Chen, and Jing Xie. "Fabrication of polyvinyl alcohol-starch controlled release active film incorporated with 2-hydroxypropyl-β-cyclodextrin/lemongrass oil emulsion for large yellow croaker (Pseudosciaena crocea) preservation." International Food Research Journal 30, no. 4 (August 30, 2023): 896–912. http://dx.doi.org/10.47836/ifrj.30.4.08.

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Polyvinyl alcohol-starch (PVA/ST) active films incorporated with lemongrass oil (LMO) or 2-hydroxypropyl-β-cyclodextrin, and LMO (HP-β-CD/LMO) emulsion were developed in the present work. The effects of LMO or HP-β-CD/LMO emulsion on the properties of films, and their application in large yellow croaker preservation were investigated. The average particle size and the encapsulation efficiency of the HP-β-CD/LMO emulsion were 150.07 nm and 81.32%, respectively. The scanning electron microscopy (SEM) results revealed that HP-β-CD improved the compatibility between PVA and starch, and LMO was well embedded in HP-β-CD. The incorporation of LMO or HP-β-CD/LMO enhanced the water vapour barrier property and flexibility of the film while weakening its mechanical strength. The oxygen barrier property of the film was weakened by the incorporation of LMO and strengthened by HP-β-CD/LMO. The film incorporated with HP-β-CD/LMO exhibited a little weaker antioxidant and antibacterial activities than the film containing LMO owing to their release property. The existence of HP-β-CD postponed the release of LMO from the film into food simulant (10% ethanol). The preservation results demonstrated that the film containing LMO or HP-β-CD/LMO efficiently inhibited the growth of microorganisms and lipid oxidation of fish; and delayed the decomposition of protein and freshness reduction of large yellow croaker. Additionally, the film added with HP-β-CD/LMO exhibited the best protection for fish quality. In other words, the film with the proper release property of active agents contributed to the preservation of aquatic products.

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Kobori, Hiromi, Megumi Sogabe, Akinori Hoshino, Toshifumi Taniguchi, and Tetsuo Shimizu. "Magneto-Transport Properties and Hole Self-Doping due to Excess Oxygen Addition in Polycrystalline LaMnO<sub>3</sub>." Materials Science Forum 1053 (February 17, 2022): 55–60. http://dx.doi.org/10.4028/p-90n56r.

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We have presented the study on magneto-transport properties and hole self-doping due to excess oxygen addition in polycrystalline LaMnO3 (LMO). The polycrystalline LMO samples were prepared by use of a solid-state reaction method. Powder mixtures with a molar ratio of 1:1 between La2O3 and Mn2O3 were pre-annealed at 1100oC for 18 hours in the atmospheres of O2, He and vacuum. By this pre-annealing, non-crystalline LMO samples were produced. After that, the non-crystalline LMO samples were grinded and were pressed into pellets at the pressure of 3t/cm3. The pellets were annealed at 1100oC and 1300oC for 18 hours in the same atmospheres as the pre-annealing. Through these processes, crystalline LMO samples were produced. To investigate the crystallographic structure of the LMO samples, X-ray diffraction (XRD) measurements have been performed by use of Cu-K radiation. From the results of XRD measurements, we have found that all LMO samples have perovskite structure and are polycrystalline. In addition, to investigate the surface structure of the LMO samples, scanning electron microscope (SEM) measurements have been carried out. Electrical resistivities (ERs) for the LMO samples have been measured as a function of temperature (4K-300K). The ERs of the LMO samples produced in O2 atmosphere show lower values as compared with other LMO ones produced in He and vacuum atmospheres. Especially, the temperature dependence of the ER for a LMO sample produced at the annealing temperature of 1100oC in O2 atmosphere shows metallic conduction. Thus, we have considered that this LMO sample has the largest hole self-doping concentration in all LMO ones. In addition, the magnetic field dependences of the magneto-resistance (MR) ratios for the LMO samples have been measured at several temperatures. The ferromagnetic behaviors on the MR ratios have been observed for LMO samples produced in O2 and He atmospheres.

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Kobori, Hiromi, Tohru Kitamura, Toshifumi Taniguchi, and Tetsuo Shimizu. "Strong Hole Self-Doping in LaMnO₃ Thin Film on a-SiO₂ Substrate Produced by Metal Organic Decomposition Method." Materials Science Forum 962 (July 2019): 17–21. http://dx.doi.org/10.4028/www.scientific.net/msf.962.17.

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We have studied the strong hole self-doping into LaMnO3(LMO) thin films produced by metal organic decomposition (MOD) method. With different heat treatment conditions, LMO thin films have been prepared by the MOD method in the 100 % O2gas atmosphere. We consider that the excess of O2-ions in LMO thin films induces the strong hole self-doping into LMO ones. The quantity of excess O2-ions in LMO is sensitive to the heat treatment conditions of the LMO production, especially the temperature, time and atmosphere gas. Although LMO single crystal is an antiferromagnetic insulator, LMO thin films we have produced in the 100 % O2gas atmosphere by use of the MOD method shows the properties of ferromagnetic metal.

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Kobori, Hiromi, Megumi Sogabe, Akinori Hoshino, Atsushi Yamasaki, Toshifumi Taniguchi, and Tetsuo Shimizu. "Evidence of Hole Self-Doping due to Excess Oxygen Addition in Polycrystal LaMnO₃." Materials Science Forum 1023 (March 2021): 9–13. http://dx.doi.org/10.4028/www.scientific.net/msf.1023.9.

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We have presented the evidence of hole self-doping due to excess oxygen addition in polycrystal LaMnO3 (LMO). The polycrystal LMO samples were prepared by use of a solid-state reaction method. Powder mixtures with a molar ratio of 1:1 between La2O3 and Mn2O3 were pre-annealed at 1100oC for 18 hours in the atmospheres of oxygen gas, helium gas and vacuum. By this heat treatment, non-crystalline LMO samples were produced. After that, the non-crystalline LMO samples were grinded and were pressed into pellets at the pressure of 3t/cm3. The pellets were annealed at 1100oC and 1300oC for 18 hours in the same atmospheres as the pre-annealing. Through these processes, polycrystal LMO samples were finally produced. To investigate crystallographic structure of the LMO samples, X-ray diffraction (XRD) measurements were performed by use of Cu-K radiation. From the experimental results of XRD measurements, we have found that all LMO samples have perovskite structure and are polycrystals. In addition, to investigate surface structure of the LMO samples, scanning electron microscope (SEM) measurements were carried out. Electrical resistivities (ERs) of the polycrystal LMO samples were measured as a function of temperature (4K-300K). The ERs of polycrystal LMO samples produced in an oxygen gas atmosphere show lower values as compared with other LMO ones in He gas and vacuum atmospheres. Especially, the temperature dependence of the ER for a polycrystal LMO sample produced at the annealing temperature of 1100oC in an oxygen atmosphere shows a metallic behavior. Thus, we have considered that this LMO sample has the largest hole self-doping concentration in all LMO ones.

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Jo, Minsang, Seong-Hyo Park, and Hochun Lee. "Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes." Materials 14, no. 16 (August 19, 2021): 4670. http://dx.doi.org/10.3390/ma14164670.

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LiMn2O4 (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH2PO4, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 °C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution.

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Proschek, V., G. Kirchengast, and S. Schweitzer. "Greenhouse gas profiling by infrared-laser and microwave occultation: retrieval algorithm and demonstration results from end-to-end simulations." Atmospheric Measurement Techniques Discussions 4, no. 2 (April 21, 2011): 2273–328. http://dx.doi.org/10.5194/amtd-4-2273-2011.

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Abstract. Measuring greenhouse gas (GHG) profiles with global coverage and high accuracy and vertical resolution in the upper troposphere and lower stratosphere (UTLS) is key for improved monitoring of GHG concentrations in the free atmosphere. In this respect a new satellite mission concept adding an infrared-laser part to the already well studied microwave occultation technique exploits the joint propagation of infrared-laser and microwave signals between Low Earth Orbit (LEO) satellites. This synergetic combination, referred to as LEO-LEO microwave and infrared-laser occultation (LMIO) method, enables to retrieve thermodynamic profiles (pressure, temperature, humidity) and accurate altitude levels from the microwave signals and GHG profiles from the simultaneously measured infrared-laser signals. However, due to the novelty of the LMIO method, a retrieval algorithm for GHG profiling did not yet exist. Here we introduce such an algorithm for retrieving GHGs from LEO-LEO infrared-laser occultation (LIO) data, applied as a second step after retrieving thermodynamic profiles from LEO-LEO microwave occultation (LMO) data as recently introduced in detail by Schweitzer et al. (2011b). We thoroughly describe the LIO retrieval algorithm and unveil the synergy with the LMO-retrieved pressure, temperature, and altitude information. We furthermore demonstrate the effective independence of the GHG retrieval results from background (a priori) information in discussing demonstration results from LMIO end-to-end simulations for a representative set of GHG profiles, including carbon dioxide (CO2), water vapor (H2O), methane (CH4), and ozone (O3). The GHGs except for ozone are well retrieved throughout the UTLS, while ozone is well retrieved from 10 km to 15 km upwards, since the ozone layer resides in the lower stratosphere. The GHG retrieval errors are generally smaller than 1% to 3% r.m.s., at a vertical resolution of about 1 km. The retrieved profiles also appear unbiased, which points to the climate benchmarking capability of the LMIO method. This performance, found here for clear-air atmospheric conditions, is unprecedented for vertical profiling of GHGs in the free atmosphere and encouraging for future LMIO implementation. Subsequent work will examine GHG retrievals in cloudy air, addressing retrieval performance when scanning through intermittent upper tropospheric cloudiness.

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Proschek, V., G. Kirchengast, and S. Schweitzer. "Greenhouse gas profiling by infrared-laser and microwave occultation: retrieval algorithm and demonstration results from end-to-end simulations." Atmospheric Measurement Techniques 4, no. 10 (October 4, 2011): 2035–58. http://dx.doi.org/10.5194/amt-4-2035-2011.

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Abstract. Measuring greenhouse gas (GHG) profiles with global coverage and high accuracy and vertical resolution in the upper troposphere and lower stratosphere (UTLS) is key for improved monitoring of GHG concentrations in the free atmosphere. In this respect a new satellite mission concept adding an infrared-laser part to the already well studied microwave occultation technique exploits the joint propagation of infrared-laser and microwave signals between Low Earth Orbit (LEO) satellites. This synergetic combination, referred to as LEO-LEO microwave and infrared-laser occultation (LMIO) method, enables to retrieve thermodynamic profiles (pressure, temperature, humidity) and accurate altitude levels from the microwave signals and GHG profiles from the simultaneously measured infrared-laser signals. However, due to the novelty of the LMIO method, a retrieval algorithm for GHG profiling is not yet available. Here we introduce such an algorithm for retrieving GHGs from LEO-LEO infrared-laser occultation (LIO) data, applied as a second step after retrieving thermodynamic profiles from LEO-LEO microwave occultation (LMO) data. We thoroughly describe the LIO retrieval algorithm and unveil the synergy with the LMO-retrieved pressure, temperature, and altitude information. We furthermore demonstrate the effective independence of the GHG retrieval results from background (a priori) information in discussing demonstration results from LMIO end-to-end simulations for a representative set of GHG profiles, including carbon dioxide (CO2), water vapor (H2O), methane (CH4), and ozone (O3). The GHGs except for ozone are well retrieved throughout the UTLS, while ozone is well retrieved from about 10 km to 15 km upwards, since the ozone layer resides in the lower stratosphere. The GHG retrieval errors are generally smaller than 1% to 3% r.m.s., at a vertical resolution of about 1 km. The retrieved profiles also appear unbiased, which points to the climate benchmarking capability of the LMIO method. This performance, found here for clear-air atmospheric conditions, is unprecedented for vertical profiling of GHGs in the free atmosphere and encouraging for future LMIO implementation. Subsequent work will examine GHG retrievals in cloudy air, addressing retrieval performance when scanning through intermittent upper tropospheric cloudiness.

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Michalska, Monika, Dominika A. Buchberger, Jacek B. Jasiński, Arjun K. Thapa, and Amrita Jain. "Surface Modification of Nanocrystalline LiMn2O4 Using Graphene Oxide Flakes." Materials 14, no. 15 (July 24, 2021): 4134. http://dx.doi.org/10.3390/ma14154134.

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In this work, a facile, wet chemical synthesis was utilized to achieve a series of lithium manganese oxide (LiMn2O4, (LMO) with 1–5%wt. graphene oxide (GO) composites. The average crystallite sizes estimated by the Rietveld method of LMO/GO nanocomposites were in the range of 18–27 nm. The electrochemical performance was studied using CR2013 coin-type cell batteries prepared from pristine LMO material and LMO modified with 5%wt. GO. Synthesized materials were tested as positive electrodes for Li-ion batteries in the voltage range between 3.0 and 4.3 V at room temperature. The specific discharge capacity after 100 cycles for LMO and LMO/5%wt. GO were 84 and 83 mAh g−1, respectively. The LMO material modified with 5%wt. of graphene oxide flakes retained more than 91% of its initial specific capacity, as compared with the 86% of pristine LMO material.

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Ono, Yuichi, Norio Fukuhara, and Osamu Yoshie. "TAL1 and LIM-Only Proteins Synergistically Induce Retinaldehyde Dehydrogenase 2 Expression in T-Cell Acute Lymphoblastic Leukemia by Acting as Cofactors for GATA3." Molecular and Cellular Biology 18, no. 12 (December 1, 1998): 6939–50. http://dx.doi.org/10.1128/mcb.18.12.6939.

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ABSTRACT Previously, we have shown that TAL1 and the LIM-only protein gene (LMO) are regularly coactivated in T-cell acute lymphoblastic leukemia (T-ALL). This observation is likely to relate to the findings that TAL1 and LMO are highly synergistic in T-cell tumorigenesis in double-transgenic mice. To understand the molecular mechanisms of functional synergy between TAL1 and LMO in tumorigenesis and transcriptional regulation, we tried to identify downstream target genes regulated by TAL1 and LMO by a subtractive PCR method. One of the isolated genes, that for retinaldehyde dehydrogenase 2 (RALDH2), was regularly expressed in most of the T-ALL cell lines that coexpressed TAL1 and LMO. Exogenously transfected TAL1 and LMO, but not either alone, inducedRALDH2 expression in a T-ALL cell line, HPB-ALL, not expressing endogeneous TAL1 or LMO. The RALDH2 transcripts in T-ALL were, however, mostly initiated within the second intron. Promoter analysis revealed that a GATA site in a cryptic promoter in the second intron was essential and sufficient for the TAL1- and LMO-dependent transcriptional activation, and GATA3 binds to this site. In addition, forced expression of GATA3 potentiated the induction ofRALDH2 by TAL1 and LMO, and these three factors formed a complex in vivo. Furthermore, a TAL1 mutant not binding to DNA also activated the transcription of RALDH2 in the presence of LMO and GATA3. Collectively, we have identified the RALDH2 gene as a first example of direct transcriptional target genes regulated by TAL1 and LMO in T-ALL. In this case, TAL1 and LMO act as cofactors for GATA3 to activate the transcription ofRALDH2.

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Kobori, Hiromi, Thoru Kitamura, A. Yamasaki, T. Taniguchi, and T. Shimizu. "Magneto-Transport Properties in LaMnO₃ Thin Films on a-SiO₂ Substrates Produced by Metal Organic Decomposition Method." Key Engineering Materials 853 (July 2020): 63–67. http://dx.doi.org/10.4028/www.scientific.net/kem.853.63.

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We have studied the magneto-transport properties in LMO thin films on a-SiO2 substrates produced by the metal organic decomposition (MOD) method. LMO thin films have been prepared by the MOD method in the 100 % O2 gas atmosphere on different heat treatment conditions. Although LMO single crystal is an antiferromagnetic insulator, LMO thin films we have produced in the 100 % O2 gas atmosphere by use of the MOD method shows the ferromagnetic metal properties for suitable heat treatment conditions. We consider that the excess of O2- ions in LMO thin films produced in the 100 % O2 gas atmosphere induces the strong hole self-doping into those and changes to ferromagnetic metal. The quantity of excess O2- ions in LMO is sensitive to the heat treatment conditions of the LMO production, especially the temperature, time and atmosphere gas. We have obtained the coercive forces from the magnetic field dependence of magnetoresistance. Based on the temperature dependence of the coercive forces, we have estimated the Curie temperature of LMO thin films.

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Chik, A., S. Saad, F. Che Pa, C. K. Yeoh, and R. M. Zaki. "First Principles Calculations of Magnetic Properties of LaMnO₃ and La₂_/3 Al_1/3 MnO₃ Perovskite Manganites." Applied Mechanics and Materials 754-755 (April 2015): 766–69. http://dx.doi.org/10.4028/www.scientific.net/amm.754-755.766.

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The magnetic properties of the perovskite manganites LaMnO3(LMO) and La2/3Al1/3MnO3(LAMO) was presented. The calculations were made within density functional theory and generalized-gradient approximation (GGA) exchange correlations energy. It was found that LAMO exhibit magnetic properties and stabilizes in antiferromagnetic structure. However cell magnetization and magnetic moments reduce with inclusion of Al dopant.

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Yu, Feng, Yi Wang, Cong Guo, He Liu, Weizhai Bao, Jingfa Li, Panpan Zhang, and Faxing Wang. "Spinel LiMn2O4 Cathode Materials in Wide Voltage Window: Single-Crystalline versus Polycrystalline." Crystals 12, no. 3 (February 24, 2022): 317. http://dx.doi.org/10.3390/cryst12030317.

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Single-crystal (SC) layered oxides as cathodes for Li-ion batteries have demonstrated better cycle stability than their polycrystalline (PC) counterparts due to the restrained intergranular cracking formation. However, there are rare reports on comparisons between single-crystal LiMn2O4 (SC-LMO) and polycrystalline LiMn2O4 (PC-LMO) spinel cathodes for Li-ion storage. In this work, the Li-ion storage properties of spinel LiMn2O4 single-crystalline and polycrystalline with similar particle sizes were investigated in a wide voltage window of 2–4.8 V vs. Li/Li+. The SC-LMO cathode exhibited a specific discharge capacity of 178 mA·h·g−1, which was a bit larger than that of the PC-LMO cathode. This is mainly because the SC-LMO cathode showed much higher specific capacity in the 3 V region (Li-ion storage at octahedral sites with cubic to tetragonal phase transition) than the PC-LMO cathode. However, unlike layered-oxide cathodes, the PC-LMO cathode displayed better cycle stability than the SC-LMO cathode. Our studies for the first time demonstrate that the phase transition-induced Mn(II) ion dissolution in the 3 V region rather than cracking formation is the limiting factor for the cycle performance of spinel LiMn2O4 in the wide voltage window.

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Nanon, A., W. Suksombat, K. A. Beauchemin, and W. Z. Yang. "Short Communication: Assessment of lemongrass oil supplementation in a dairy diet on in vitro ruminal fermentation characteristics using the rumen simulation technique." Canadian Journal of Animal Science 94, no. 4 (December 2014): 731–36. http://dx.doi.org/10.4141/cjas-2014-019.

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Nanon, A., Suksombat, W., Beauchemin, K. A. and Yang, W. Z. 2014. Short Communication: Assessment of lemongrass oil supplementation in a dairy diet on in vitro ruminal fermentation characteristics using the rumen simulation technique. Can. J. Anim. Sci. 94: 731–736. A study using a rumen simulation technique (Rusitec) was conducted to investigate the effect of increasing lemongrass oil (LMO) supplementation on ruminal fermentation characteristics of a dairy cow diet. Increasing LMO from 0, to 100 to 200 mg kg−1 dry matter did not affect volatile fatty acid concentration, whereas LMO supplementation increased large and small peptide N and reduced ammonia N concentration. Adding 200 mg of LMO kg−1 dry matter also increased microbial N production. However, feed digestibility was not affected by LMO supplementation. These results suggest that the addition of LMO may inhibit deamination in the rumen.

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Sahu, Manjulata, Nimai Phatak, and M. K. Saxena. "Exploring color tunable emission characteristics of Eu3+-doped La2(MoO4)3 phosphors in the glass–ceramic form." RSC Advances 11, no. 28 (2021): 17488–97. http://dx.doi.org/10.1039/d1ra01715b.

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The glass–ceramic Eu-LMO-1050 is more suitable as a red-color-emitting phosphor material than the ceramic Eu-LMO-750. Further, Eu-LMO-1050 can overcome the problems related to the phosphor/silicone composite in commercial LEDs.

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Nanthamitr, Puttida, Chanikarn Tomon, and Montree Sawangphruk. "Reducing Intrinsic Drawbacks of Ni-Rich NMC811 Cathode By Blending with LMO Cathode in 18650 Lithium-Ion Batteries." ECS Meeting Abstracts MA2022-01, no. 2 (July 7, 2022): 277. http://dx.doi.org/10.1149/ma2022-012277mtgabs.

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The commercial NMC811 cathode can provide high specific capacity and energy density but it has poor capacity retention leading short cycle life and severe safety hazards because their instability of layer structure. Whist, spinel LMO cathode has high stability with great capacity retention but low specific capacity and energy density. In this work, blended NMC811/LMO cathode in the ratio of 2:1 can increase the capacity around 69% when compared with pristine LMO. Moreover, the blended NMC811/LMO in the ration of 2:1 can provide the high-capacity retention more than 80% in 450 cycles that higher than pristine NMC811 around 40% and give the highest energy density equal to 189.3 Whkg-1. Thus, the blended NMC811/LMO can solve intrinsic drawbacks of these two cathode materials (NMC811 and LMO) and can be used to further develop the 18650 batteries in the industrial level to be more efficient.

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Darwel, R. Selvia, F. Fadillah, Mahaza, and E. Zicof. "Effectiveness of local microorganisms (LMO) coconut pulp on composting time." International Journal of Agricultural Research, Innovation and Technology 11, no. 1 (July 2, 2021): 109–16. http://dx.doi.org/10.3329/ijarit.v11i1.54473.

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Compost can be used to reduce waste, it formed naturally, but it will take a long time, around 6-12 months. Bioactivators accelerate composting process; one of them is a solution of LMO (Local Microorganism) coconut pulp. The purpose of this study to determine the effectiveness of LMO coconut pulp for the composting time. The method in this research is quasi-experimental. This study consists of 3 treatments with 5 replications. Treatment 1 composting with the addition of LMO coconut pulp 50,000 ppm; treatment 2 composting with the addition of LMO coconut pulp 100,000 ppm; treatment 3 composting with the addition of LMO coconut pulp 200,000 ppm. The materials used in this study are vegetables and sawdust and the composting process carried out aerobically. From the observations, the average time to compile with LMO coconut pulp 50,000 ppm is 21.00 (21 days), 100,000 ppm 18.60 (19 days) and 200,000 ppm 18.20 (18 days). Based on the ANOVA test, the p value is 0.0001 (p <0.05) which means that H0 rejected, that there is a significant difference in composting time using LMO coconut pulp 50,000 ppm, 100,000 ppm, and 200,000 ppm. The most significant difference is between compost with LMO coconut pulp 50,000 ppm and compost with LMO coconut pulp 200,000 ppm. It is recommended for the further researchers using other types of waste, and test the quality of compost produced especially C/N compost. The community can use coconut pulp as a bioactivator in accelerating the composting process. Int. J. Agril. Res. Innov. Tech. 11(1): 109-116, June 2021

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Morita, Kenji, and Bun Tsuchiya. "Dynamic Behavior of Li in Solid-State Li-Ion Batteries Studied using MeV Ion Beam Analysis Techniques." Journal of Energy and Power Technology 03, no. 02 (March 26, 2021): 1. http://dx.doi.org/10.21926/jept.2102029.

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In this review, various studies on the Li depth profiles of metal/electrolyte/metal capacitors and batteries of Au/LCO/LATP/Pt, LCO/LiPON/Si, and LMO/LiPON/NbO with different metal electrodes at both sides (by bias; LCO =LiCoO2, LATP =Li3.1Al0.86Ti1.14Ge1.27P1.73O12, LMO =LiMn2O4, NbO = Nb2O5) using the in-situ reflection ERD (ERD) technique with 9MeV O+4 ion beam and transmission ERD (TERD) technique with 5MeV He+2 ion beam, respectively, are described. For capacitors, the transport fraction of Li-ion in the electrolyte is less than unity. The Li atoms diffuse in the direction opposite to the ion. It has been shown that the batteries are rechargeable. On the other hand, it is observed that an anomalous over-charging takes place when the batteries are over-biased (Si/LiPON/LCO and LMO/LiPON/NbO), and strong reactions of Li with the metal electrodes take place under these conditions. The anomaly observed is explained in terms of the imbalance in the capacities of Li in anode and cathode, which can be attributed to the sizeable amounts of hydrogen present as an impurity during the fabrication of the battery. This is because hydrogen can potentially reduce the capacity of Li in both anode and cathode. The reactions of Li with metal electrodes are discussed in terms of the transport fraction of Li ions (less than unity) and the difference in the work functions of metal electrodes at both sides. Finally, it is noted that the removal of hydrogen in batteries can potentially improve safety, efficiency, and lifetime. These can be achieved by reducing the reaction of Li with metal electrodes. The recoil-scatter method in the TERD technique can measure the Li depth profile in the absence of background yields.

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Polat, O., T. Aytug, M. Paranthaman, K. Kim, Y. Zhang, J. R. Thompson, D. K. Christen, X. Xiong, and V. Selvamanickam. "Direct growth of LaMnO3 cap buffer layers on ion-beam-assisted deposition MgO for simplified template-based YBa2Cu3O7−δ-coated conductors." Journal of Materials Research 23, no. 11 (November 2008): 3021–28. http://dx.doi.org/10.1557/jmr.2008.0362.

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Simplification of the ion-beam-assisted deposition (IBAD) buffer architecture is one of the key issues for reduced manufacturing cost of second-generation superconducting wire production. In this work, we studied various radio frequency magnetron sputter deposition conditions for epitaxial growth of LaMnO3 (LMO) layers, with varying thicknesses, directly on IBAD-MgO without homo-epitaxial MgO layers. Performance of the simplified LMO/IBAD-MgO samples was qualified by pulsed-laser-deposited 1-μm-thick YBa2Cu3O7−δ (YBCO) coatings. Detailed property characterizations revealed that though the growth temperature has a substantial effect on the texture of LMO layers, neither LMO thickness nor different sputter gas compositions had a significant effect on the performance of YBCO films. The superconducting properties of YBCO on LMO/IBAD-MgO are found to be similar to those obtained on templates having homo-epitaxial MgO layers. The present results underscore the strong potential of LMO as a single cap layer directly on IBAD-MgO for the development of a simplified IBAD architecture.

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Chen, Xin, Baohua Wang, Tongxin Ge, Haoming Wei, and Bingqiang Cao. "Modifying Jahn–Teller distortion by epitaxial stress in LaMnO₃ films for tunning electron localization." Journal of Physics: Condensed Matter 34, no. 10 (December 17, 2021): 105401. http://dx.doi.org/10.1088/1361-648x/ac3f02.

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Abstract The effect of epitaxial stress on Jahn–Teller (JT) distortion in epitaxial LaMnO3 (LMO) films has been investigated. Both 2θ–ω scans and reciprocal space maps (RSMs) indicate that LMO samples are subjected to compressive stress. Obvious Laue oscillations can be detected in 2θ–ω scans, indicating the high quality of samples. RSMs of symmetry peak (001) and asymmetry peak (−103) imply different epitaxial stress for LMO films deposited on different substrates. Raman spectra measurements reveal that the degree of JT distortion can be well tuned via the epitaxial stress which may further influence on the electron localization in the films. This study might benefit to understanding the correlation between crystalline structure and electrical transport properties of LMO films and related LMO-based superlattices.

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STEFAN, Georgeta, Stelian BARAITAREANU, and Maria Rodica GURAU. "THE EFFECT OF ANTIMICROBIAL SUBSTANCES TO INHIBIT THE GROWTH OF Listeria monocytogenes INTO THE READY-TO-EAT PRODUCTS." AgroLife Scientific Journal 10, no. 1 (June 30, 2021): 236–41. http://dx.doi.org/10.17930/agl2021127.

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Listeria monocytogenes (LMO) is one of the most pathogenic agents that can contaminate the ready-to-eat (RTE) products, of animal and non-animal origin and, due to its special resistance, it justifies specific measures on the RTEprocessing flow. It is a continuing concern for the prevention of LMO infections in humans through the food consumption. In the reduction of LMO growth, the bioprotectors use is increasingly being considered. In this paper we are presenting the antimicrobial effect of substances added to RTE products to suppress or limit the growth of LMO in Chorizo sausages. One of these is the bioprotection culture that contain strains of Pediococcus acidilactici. P. acidilactici produces pediocin which is a bacteriocin with strong antagonistic properties against LMO. The results support the recommendations of P. acidilactici use as an additional culture in the production of dry or semi-dry fermented sausages below 26ºC. Under these conditions, the addition of the culture to the normal recipe will ensure an efficient reduction of LMO growth, and does not significantly affect the acidification profile.

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Ross, Natasha, Shane Willenberg, Thando Juqu, Emanuela Carleschi, and Bryan P. Doyle. "Boosting LiMn2O4 Diffusion Coefficients and Stability via Fe/Mg Doping and MWCNT Synergistically Modulating Microstructure." Journal of Nanotechnology 2024 (January 5, 2024): 1–14. http://dx.doi.org/10.1155/2024/7020995.

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The dissolution of manganese and its deposition on the anode surface cause poor cycling stability in lithium-ion batteries. To alleviate these issues, this study probes the electrochemical activity of highly crystalline and cation-adjusted lithium manganese oxide (LMO) carbon spinel composite obtained via a modified sol-gel synthesis procedure. The pristine LMO cathode was functionalized with a Fe and Mg alloy and fused with purified multiwalled carbon nanotubes (MWCNTs) to form a catalytically stabilized LiMn1.98Fe0.01Mg0.01O4/MWCNT (LMO-FeMg/MWCNT) framework. High-resolution SEM analysis showed well-dispersed particles in the nanometer size range. The electrochemical characteristics of the novel composite materials yielded favourable electrochemical results with diffusion coefficients of 1.91 × 10−9 cm2·s−1 and 5.83 × 10−10 cm2·s−1 for LMO-FeMg and LMO-FeMg/MWCNT, respectively. This improvement was supported by impedance studies which showed a considerable Rct reduction of 0.27 Ω and 0.71 Ω. The cation stabilized system outperformed the pristine LMO material with specific capacities around 145 mAh·g−1, due to an enhancement in electrochemical activity and structural stability.

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Bruś, B., and A. Zarycka. "LMO Ceramics Microstructure." Archives of Metallurgy and Materials 61, no. 2 (June 1, 2016): 857–62. http://dx.doi.org/10.1515/amm-2016-0145.

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Abstract The aim of this work was to characterize the microstructure of LMO type ceramics. The ceramics obtained by the free sintering at two temperatures 1473 K and 1573 K and two sintering times 6 and 12 h was the test material. One series was also obtained by the hot pressing method for a comparison. In all the cases the material synthesis was conducted by the solid-state reaction method at 1173 for 24 h. Photographs of the specimen fractures were taken by a scanning electron microscope to characterize the microstructure of the ceramics obtained in a more detailed way. The VISILOG 4 system, enabling to calculate a lot of parameters characterizing the material microstructure, such as e.g.: a number of grains on the unit area, an average grain size, shape indexes of the grains in question, was used as well. It allows determining a grain size distribution, and a frequency of presence of grains with the specific shape index. By analyzing a set of the parameters obtained an influence of the technological conditions on the microstructure of the material in question, and on its properties and applicability at the same time can be determined.

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Wang, Weiyuan, Jiyu Fan, Huan Zheng, Jing Wang, Hao Liu, Caixia Wang, Chunlan Ma, Langsheng Ling, Jingtao Xu, and Hao Yang. "Two conductive mechanisms in LaMnO3 thin film: Adiabatic and nonadiabatic small polaronic hopping." Modern Physics Letters B 35, no. 19 (June 24, 2021): 2150310. http://dx.doi.org/10.1142/s0217984921503103.

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We have presented the structural, surface morphology, magnetic and resistivity data for perovskite LaMnO3 epitaxial thin films which are fabricated on well-oriented (001) LaAlO3 substrates by pulsed laser deposition technique. X-ray diffraction [Formula: see text]–[Formula: see text] linear scans and reciprocal space mapping measurement confirm that the out-of-plane and in-plane epitaxial relationship are LMO(001)/LAO(001) and LMO(110)/LAO(110), respectively. Surface roughness determined by atomic force microscopy was no more than 0.3 nm. In the whole studied temperature range, all films only show a paramagnetic behavior instead of any magnetic phase transitions. Correspondingly, the electron transport behaviors always exhibit an insulting state as the temperature changes from high to low. However, we find that none of theoretical models can individually be used to understand their conductive mechanisms. Further studies indicated that charge carries of high and low temperature region obey adiabatic and nonadiabatic small polaronic hopping mechanisms, respectively. This finding offers new ways of exploiting the abnormal ferromagnetism in LaMnO3 multilayer thin films.

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Zhao, Xu Wen, Sheung Mei Ng, Lok Wing Wong, Hon Fai Wong, Yu Kuai Liu, Wang Fai Cheng, Chee Leung Mak, Jiong Zhao, and Chi Wah Leung. "Ionic liquid modulation of exchange bias in epitaxial LaMnO₃ thin films." Applied Physics Letters 121, no. 16 (October 17, 2022): 162406. http://dx.doi.org/10.1063/5.0106859.

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The magnetic ground state of LaMnO3 (LMO) thin film is still a controversial issue, even though various mechanisms, such as cation/anion non-stoichiometry, epitaxial strain, interfacial charge reconstruction, and orbital ordering, have been proposed. Here, exchange bias (EB) was introduced into a high-quality epitaxial LMO thin film via relatively low oxygen growth pressure. The EB in LMO was modulated by +2 V gating via ionic liquid method with increased EB field ( HEB), coercivity ( HC), blocking temperature ( TB), and reduced ferromagnetic (FM) magnetization. However, the −2 V gating has a much weaker tunability. By investigating the change of structure, surface morphology, and Mn oxidation state in LMO thin films, the modulation of magnetic properties is attributed to the creation/annihilation of oxygen vacancy in an LMO thin film. The suppressed FM phase in LMO can be ascribed to reduced Mn valence, structure disorders, and structure transition. However, the enriched antiferromagnetic phase results from the transition of the pseudocubic structure to the distorted orthorhombic structure. This work not only highlights the importance of functional defects in perovskite oxides but also sheds light on the potential of electric-field modulation of magnetism in spintronic devices.

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Yang, Shanshan, Xuegong Li, Xiang Xiao, Guangjiao Zhuang, and Yu Zhang. "Sphingomonas profundi sp. nov., isolated from deep-sea sediment of the Mariana Trench." International Journal of Systematic and Evolutionary Microbiology 70, no. 6 (June 1, 2020): 3809–15. http://dx.doi.org/10.1099/ijsem.0.004235.

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A Gram-stain-negative, short rod-shaped, yellow bacterium (strain LMO-1T) was isolated from deep-sea sediment of the Mariana Trench, Challenger Deep. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain LMO-1T belonged to genus Sphingomonas , with the highest sequence similarity to Sphingomonas formosensis CC-Nfb-2T (96.3 %), followed by Sphingomonas prati W18RDT (96.1 %), Sphingomonas arantia 6PT (96.0 %) and Sphingomonas montana W16RDT (95.9 %). The predominant polar lipids were phosphatidylethanolamine, sphingoglycolipid, phosphatidylglycerol and phosphatidylcholine. The main cellular fatty acids were summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), C16 : 0 and C14 : 0 2-OH. The major polyamine was sym-homospermidine and the predominant isoprenoid quinone was ubiquinone-10. The genome DNA G+C content of strain LMO-1T was 69.2 mol%. The average nucleotide identity and DNA–DNA hybridization values between strain LMO-1T and CC-Nfb-2T were 75.9 and 20.5 %, respectively. Based on these data, LMO-1T should be classified as representing a novel species of the genus Sphingomonas , for which the name Sphingomonas profundi sp. nov. is proposed. The type strain is LMO-1T (=MCCC 1K04066T=JCM 33666T).

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Zheng, Junhan, Hongquan Zhao, Xu Guo, Xiaoyun Jin, Lei Wang, Songtao Dong, and Jian Chen. "Enhanced Electrochemical Performance of LaMnO3 Nanoparticles by Ca/Sr Doping." Coatings 14, no. 1 (December 24, 2023): 20. http://dx.doi.org/10.3390/coatings14010020.

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In this paper, the sol-gel method was used to synthesize powders of LaMnO3 (LMO), La0.85Ca0.15MnO3 (LCM), and La0.85Sr0.15MnO3 (LSM). The effect of substituting Ca and Sr at the A-site on the perovskite crystal structure and electrochemical capabilities of LMO was investigated. LCM retained its orthogonal structure in comparison to the parent LMO components, whereas LSM transitioned to a rhombic structure. At 0.5 A/g, the specific capacitance of LCM and LSM electrodes is 185.5 F/g and 248 F/g, respectively. The specific capacitance of LCM was three times greater than that of the LMO electrode. Among the three samples (LMO, 22.25 m2 g−1; LSM, 31.56 m2 g−1), the LCM sample exhibited the highest specific surface area of 38.79 m2 g−1. The charge transfer resistances of the LMO, LCM, and LSM are 0.48 Ω, 0.36 Ω, and 0.38 Ω, respectively. The LCM electrode exhibits the greatest capacitance performance due to its more refined morphology, increased concentration of oxygen vacancy, and more complete utilization of the perovskite bulk structure. The above results demonstrate that Ca or Sr substitution of A-site compounds has great potential for supercapacitor applications.

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Djuriš, Katarina, G. Branković, Z. Branković, Slavko Bernik, M. Počuča, D. Poleti, and B. Antić. "Synthesis of Pure and Doped LaMnO₃ Powders from Citrate Precursors." Materials Science Forum 555 (September 2007): 237–42. http://dx.doi.org/10.4028/www.scientific.net/msf.555.237.

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In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)2. Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Cadoped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.

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You, Hae-Na, and Min-Gyu Lee. "Preparation of a Novel PU-LMO Adsorbent by Immobilization of LMO on Polyurethane Foam for Recovery of Lithium Ions." Clean Technology 20, no. 3 (September 30, 2014): 277–82. http://dx.doi.org/10.7464/ksct.2014.20.3.277.

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Liang, Yong Mei, Zhan Jie Wang, Yu Bai, Ying Jie Wu, Xing Kun Ning, Xiao Fei Xiao, Xin Guo Zhao, Wei Liu, and Zhi Dong Zhang. "Interface-induced transition from a cluster glass state to a spin glass state in LaMnO3/BiFeO3 heterostructures." Journal of Materials Chemistry C 7, no. 8 (2019): 2376–84. http://dx.doi.org/10.1039/c9tc00172g.

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Han, Sung Min, Jung Ro Lee, and Kyong-Hee Nam. "Climate Characteristics and Distribution of Native Organisms in Living Modified Organism Confined Field under the Ministry of Environment, Republic of Korea." GEO DATA 5, no. 3 (September 30, 2023): 213–21. http://dx.doi.org/10.22761/gd.2023.0022.

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In this study, climate variables and distribution patterns of native organisms were investigated in an enclosed field within the institute of living modified organism (LMO) risk assessment designated by the Ministry of Environment (MOE) of South Korea. The data includes changes in temperature, precipitation, humidity, sunlight, wind direction, and velocity within the LMO confined field from 2019 to 2023 as well as information on plant diversity and soil microbial communities. This data can be used as the basic data when establishing LMO safety management policies by the MOE such as preparing guidelines for systematic LMO risk assessment reflecting domestic environmental characteristics and risk assessment of LMOs for environmental remediation and natural ecosystem. In addition, this data can be usefully used as the comparative data for LMO risk assessment by other ministries such as the Ministry of Agriculture, Food and Rural Affairs, the Ministry of Trade, Industry and Energy, and the Ministry of Oceans and Fisheries.

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Panić, Stefan V., Marijana R. Pantović Pavlović, Miroslava M. Varničić, Vojin Tadić, Srećko Stopić, Bernd Friedrich, and Miroslav M. Pavlović. "Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction." Catalysts 12, no. 6 (June 12, 2022): 641. http://dx.doi.org/10.3390/catal12060641.

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The main objective of this research was a systematic development of advanced micro/nanostructured materials based on the most used metal-oxides for ORR and metal-oxides with an extremely low-loading of Pt for comparison. Hybrid composites compared were: MnO2, La2O3, mixed lanthanum manganese oxides (LMO), and mixed lanthanum manganese oxides with reduced platinum load (LMO-Pt). The influence of the reduced amount of noble metal, as well as single oxide activity toward ORR, was analyzed. The complete electrochemical performance of the hybrid materials has been performed by means of CV, LSV, and EIS. It was shown that all synthesized catalytic materials were ORR-active with noticeable reduction currents in O2 saturated 0.1 M KOH. The ORR behavior indicated that the La2O3 electrode has a different mechanism than the other tested electrode materials (MnO2, LMO, and LMO-Pt). The EIS results have revealed that the ORR reaction is of a mixed character, being electrochemically and diffusion controlled. Even more, diffusion is of mixed character due to transport of O2 molecules and the chemical reaction of oxygen reduction. O2 diffusion was shown to be the dominant process for MnO2, LMO, and LMO-Pt electrolytic materials, while chemical reaction is the dominant process for La2O3 electrolytic materials.

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Dewilda, Y., R. Aziz, and F. Rahmayuni. "Application of local microorganisms from tuna fish and shrimp waste as bio activator for household organic waste composting by Takakura method." IOP Conference Series: Earth and Environmental Science 896, no. 1 (November 1, 2021): 012026. http://dx.doi.org/10.1088/1755-1315/896/1/012026.

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Abstract Organic waste has the potency to use as bio activator material. This research compares household organic waste compost results with the addition of bio activator from local microorganism activator (LMO) from tuna fish and shrimp waste with Effective Microorganisms (EM4). The composting method used is aerobic composting with the Takakura composting technique. This composting is carried out in 5 variations, variation one without-bio activator added, 2 with LMO of tuna fish waste added, variation 3 with LMO shrimp waste added, variation 4 with LMO of tuna fish, and shrimp waste added, variation 5 with EM4 added. Analysis of all compost quality has met SNI 19-7030-2004 standards. A total of 2 kg of raw material produced solid compost becomes 0.7-1 kg of compost. The use of bio activators can speed up the composting process to 8-12 days. The variation of adding LMO tuna fish waste was chosen as a suitable alternative compared to other variations. The composting process with LMO of tuna fish waste results from the fastest composting time of 9 days with a C/N ratio of 18.45%, P2O5 0.56 %, and 0.76% K2O, with 0.85 kg of compost. Scoring results in variation 2 is the best variation in compost maturity quality.

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Faiza, Lucky Lia, Poppy F. Arifin, Waras Nurcholis, Taufik Ridwan, Latifah K. Darusman, Raphael Aswin Susilowidodo, and Rosalina Wisastra. "Effect of Local Microorganism Utilization to Increase Productivity of Javanese Turmeric (Curcuma xanthorriza Roxb.)." Jurnal Jamu Indonesia 3, no. 2 (August 31, 2018): 62–67. http://dx.doi.org/10.29244/jji.v3i2.55.

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The quality of javanese turmeric as one of the most widely use herb in Indonesian traditional medicine, is often ignored and unoptimized. Therefore, research on Javanese turmeric cultivation become critical to be performed.One of crucial aspect is sufficiency of water and nutrients to increase rhizome productivity during vegetative period. Therefore, fertilization plays an important role in increasing soil macronutrients content and ultimately enhance Javanese turmeric’s quality.The aim of this research is to determine the potential of addition local microorganism (LMO) solution as an organic fertilizer on rhizome production and bioactive content of Javanese Turmeric . The research on LMO application for Javanese turmeric plantation was conducted at Soho Center of Excellence in Herbal Research (SCEHR). LMO was made by utilizing local waste of snail and fruits collected from around plantation area. Three different groups of treatment were applied, one group as a control and two groups were treated by additional LMO along vegetative period. The measured parameters were weight of rhizome, curcuminoid and xanthorrhizol levels. The results showed that LMO addition to the regular fertilization able to increase Javanese turmeric productivity and shorten both vegetative and generative period of time while maintain its quality. It can be concluded that LMO application is also good approach for both field, Javanese turmeric agriculture and natural medicine.

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Triaswinanti, Rininta, Rahmadhani Triastomo, Angella Natalia Ghea Puspita, and Abdul Hapid. "STUDI TEKNO-EKONOMI PROSES PIROMETALURGI DAUR ULANG BATERAI LITHIUM MANGANESE OXIDE (LMO) DAN LITHIUM IRON PHOSPHATE (LFP)." J@ti Undip: Jurnal Teknik Industri 18, no. 2 (May 5, 2023): 94–108. http://dx.doi.org/10.14710/jati.18.2.94-108.

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Limbah baterai lithium-ion diproyeksikan akan meningkat seiring dengan peningkatan jumlah kendaraan listrik. Teknologi daur ulang baterai menjadi perhatian penting terutama dalam mendukung percepatan program Kendaraan Bermotor Listrik Berbasis Baterai (KBLBB). Penelitian ini berfokus pada studi tekno-ekonomi pembangunan pilot plant daur ulang baterai Lithium Manganese Oxide (LMO) dan Lithium Iron Phosphate (LFP) secara pirometalurgi. Kapasitas input daur ulang baterai LFP dan LMO adalah 8.000 ton/tahun. Nilai Internal Rate of Return (IRR), Net Present Value (NPV), Payback Period (PBP), dan Profitability Index (PI) daur ulang baterai LMO berturut-turut adalah 12,57%, Rp.7.583.346.464,-, 5,85 tahun, dan 2,39. Sedangkan untuk daur ulang baterai LFP berturut-turut adalah 11,15%, -Rp.11.235.266.123,-, 6,23 tahun, dan 2,32. Hal ini mengindikasikan daur ulang baterai LMO lebih menjanjikan dibandingkan daur ulang baterai LFP. Dari segi analisis sensitivitas, diketahui bahwa daur ulang baterai LMO dan LFP ini lebih sensitif terhadap perubahan harga produk dibandingkan dengan perubahan harga reagen dan nilai OPEX. Emisi gas CO2, pada proses daur ulang baterai LMO lebih sedikit daripada baterai LFP, sehingga pencemaran lingkungan yang dihasilkan lebih minim. Untuk meminimalisir emisi gas ini, dapat dilakukan instalasi peralatan wet scrubber dan implementasi sistem Carbon Capture and Storage (CCS)/Carbon Capture, Utilization, and Storage (CCUS).

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Tsekeli, Tebogo Retsepire, Aderemi Bashiru Haruna, and Kenneth Ikechukwu Ozoemena. "Microwave-Irradiation Suppresses the Jahn-Teller Distortion in Spinel LiMn₂O₄ Cathode Material for Lithium-Ion Batteries." ECS Meeting Abstracts MA2023-02, no. 2 (December 22, 2023): 397. http://dx.doi.org/10.1149/ma2023-022397mtgabs.

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Jahn-Teller (J-T) distortion remains the key challenge to realizing the full electrochemistry potential of the commercialized LiMn2O4 cathode material for lithium-ion batteries. In this work, the application of microwave irradiation to suppress the limiting J-T distortion in pristine LMO (LMO-p) materials and improve the electrochemistry of lithium-ion batteries has been reported. Unlike thermal heating, microwave irradiation inhibits J-T distortion. To establish the underlying science behind the impact of microwave irradiation, both the pristine (LMO-p) and the microwave-treated counterpart (LMO-m) are subjected to several characterization techniques, including synchrotron XRD, XPS, powder neutron diffraction (PND), MAS 7Li NMR, Raman and BET analysis. These techniques prove that LMO-m possesses the needed physico-chemical properties that explain: i) suppressed J-T distortion (such as an increased average Mn oxidation state (i.e., nMn ≥ 3.5+ or Mn4+/Mn3+ > 50%)), decreased lattice parameter, enhanced BET surface area, and enhanced structural crystallinity), and ii) improved electrochemical performance (such as increased specific discharge capacity, electronic and Li-ion transfer kinetics, and Coulombic efficiency). The findings in this work are relevant for the realization of low-cost and environmentally benign scale-up modification processes for LMO spinel and related cathode materials for the development of high performance lithium-ion batteries.

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Aytug, T., M. Paranthaman, H. H. Zhai, H. H. Christen, S. Sathyamurthy, D. D. Christen, and R. R. Ericson. "Single buffer layers of LaMnO3 or La0.7Sr0.3MnO3 for the development of Yba2Cu3O7−δ-coated conductors: A comparative study." Journal of Materials Research 17, no. 9 (September 2002): 2193–96. http://dx.doi.org/10.1557/jmr.2002.0322.

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Single, epitaxial buffer layers of insulating LaMnO3 (LMO) or conductive La0.7Sr0.3MnO3 (LSMO) have been grown by sputter deposition on biaxially textured Ni and Ni–alloy substrates. We report baseline investigations of their compatibility with the Yba2Cu3O7−δ (YBCO) coatings and demonstrate biaxially textured YBCO films grown by pulsed-laser deposition on these single-buffered tapes. Superconducting property characterizations revealed better properties for YBCO films on LMO-buffered tapes relative to those grown on LSMO layers. Self-field critical current densities (Jc) exceeding 1 × 106 A/cm2 at 77 K have been obtained for the YBCO (200 nm) films on LMO-buffer layers. These results offer prospects for the use of single, LMO-buffered metal tapes in the development of practical YBCO-coated conductors.

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Abbas, Somia M., Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Eman H. Ismail, Mário Kotlár, Martin Winter, Jie Li, and Christian M. Julien. "Ag-Modified LiMn2O4 Cathode for Lithium-Ion Batteries: Coating Functionalization." Energies 13, no. 19 (October 5, 2020): 5194. http://dx.doi.org/10.3390/en13195194.

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In this work, the properties of silver-modified LiMn2O4 cathode materials are revisited. We study the influence of calcination atmosphere on the properties of the Ag-coated LiMn2O4 (Ag/LMO) and highlight the silver oxidation. The effect of the heat treatment in vacuum is compared with that in air by the characterization of the structure, specific surface area, Li transport properties and electrochemical performance of Ag/LMO composites. Surface analyses (XPS and Raman spectroscopy) show that the nature of the coating (~3 wt.%) differs with the calcination atmosphere: Ag/LMO(v) calcined in vacuum displays Ag nanospheres and minor AgO content on its surface (specific surface area of 4.1 m2 g−1), while Ag/LMO(a) treated in air is mainly covered by the AgO insulating phase (specific surface area of 0.6 m2 g−1). Electrochemical experiments emphasize that ~3 wt.% Ag coating is effective to minimize the drawbacks of the spinel LiMn2O4 (Mn dissolution, cycling instability, etc.). The Ag/LMO(v) electrode shows high capacity retention, good cyclability at C/2 rate and capacity fade of 0.06% per cycle (in 60 cycles).

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42

Nur, Khushnuda, Christoph Roitzheim, Martin Finsterbusch, Martin Bram, and Olivier Guillon. "Cold Sintered LiMn₂O₄ for High-Rate Capability Electrodes." Journal of The Electrochemical Society 169, no. 2 (February 1, 2022): 020556. http://dx.doi.org/10.1149/1945-7111/ac5348.

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This study provides for the first time a detailed investigation of the cold sintering of LiMn2O4 (LMO). Aqueous based cold sintering aid facilitated densification of LMO at lower temperature range of 400 °C to 600 °C within a dwell time of merely 1 min to the relative density of 70%–80%, without any non—stoichiometry or the need of post annealing in air atmosphere. Connected porosity was observed in the cold sintered structure as confirmed by Mercury porosimetry and scanning electron microscopy analysis. Cold sintered and dry milled LMO delivered a specific discharge capacity of 121 mAh g−1 for the first discharge cycle at 0.1 C with an appreciably low capacity drop to 107 mAh g−1 at 15 C. In contrast, LMO powder, without any cold sintering treatment, provided merely 84 mAh g−1 at 0.1 C as initial discharge capacity and only 6 mAh g−1 at 2 C. This difference was interpreted as the removal/thinning of insulating Li2CO3 layer from the LMO particles after being cold sintered as confirmed by X-ray diffraction, thermal analysis and Raman spectroscopy.

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43

Venkataraman, Kartik, and Eric Hellstrom. "Development of a metal-organic deposition process for growth of lanthanum manganate buffer layers for coated conductors." Journal of Materials Research 24, no. 4 (April 2009): 1567–75. http://dx.doi.org/10.1557/jmr.2009.0180.

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One embodiment of YBa2Cu3O7-x (YBCO)-coated conductors consists of YBCO film grown using a metal-organic deposition (MOD) process on a buffer layer stack deposited on a Ni-W substrate. A possible alternative is to replace the multilayer buffer stack with a single layer of LaMnO3 (LMO) grown by MOD. A suitable temperature (T) – oxygen partial pressure (PO2) process-window to grow LMO films via MOD on Ni substrates has been identified. Untextured LMO was grown on pure Ni. However, we have not been able to grow phase-pure LMO films on either bare or Y2O3-coated, biaxially textured Ni-5W (at.%) due to the incongruent, overlapping requirements of having the PO2 low enough to not oxidize the Ni-5W substrate but high enough to convert the metal-organic precursors to LMO and the relatively high temperatures needed to form an epitaxial film in an MOD process. The main problem is that tungsten from the substrate reacts with cations in the overlying film forming tungstates when the films are processed in the T-PO2 window.

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44

DUMITRU, Daniela, and Mihaela MINCIU. "Critical Thinking Stance in Teaching Business and Economics. Explorative Qualitative Study in Higher Education." European Journal of Interdisciplinary Studies 15, no. 1 (May 20, 2023): 106–19. http://dx.doi.org/10.24818/ejis.2023.08.

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In this paper we present the triangulation of three data sets, observation, focus groups and document analysis in order to reveal the differences between Higher Education Institution (HEI) and Labor Market Organization (LMO) regarding critical thinking (CT) development. The three methods were used chronologically, starting with observation, and continuing to focus groups and document analysis. The results showed that teaching methods were the most "forgotten" item in HEI and were abundant in LMO training settings. Moreover, teaching strategies are different, LMO employing social-constructivist type, different from HEI teachers, which focuses in particular on the transmission of information. The results showed, in this case, that the expectations were confirmed. HEI focuses on the interpretative and analytic aspects of CT, while LMO focuses also on dispositions, enhancing skills like responsibility, awareness, identification, and analysis, interpretation, self-learning. But both HEI and LMO, are addressing CT indirectly, through an implicit teaching approach. The research was carried out as part of the Critical thinking for successful jobs - THINK4JOBS project, which proposes an innovative approach to CT for a better insertion of students in the labour market.

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45

Nyamaa, Oyunbayar, Gyeong-Ho Kang, Sun-Chul Huh, Jeong-Hyeon Yang, Tae-Hyun Nam, and Jung-Pil Noh. "Unraveling the Mechanism and Practical Implications of the Sol-Gel Synthesis of Spinel LiMn2O4 as a Cathode Material for Li-Ion Batteries: Critical Effects of Cation Distribution at the Matrix Level." Molecules 28, no. 8 (April 15, 2023): 3489. http://dx.doi.org/10.3390/molecules28083489.

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Spinel LiMn2O4 (LMO) is a state-of-the-art cathode material for Li-ion batteries. However, the operating voltage and battery life of spinel LMO needs to be improved for application in various modern technologies. Modifying the composition of the spinel LMO material alters its electronic structure, thereby increasing its operating voltage. Additionally, modifying the microstructure of the spinel LMO by controlling the size and distribution of the particles can improve its electrochemical properties. In this study, we elucidate the sol-gel synthesis mechanisms of two common types of sol-gels (modified and unmodified metal complexes)—chelate gel and organic polymeric gel—and investigate their structural and morphological properties and electrochemical performances. This study highlights that uniform distribution of cations during sol-gel formation is important for the growth of LMO crystals. Furthermore, a homogeneous multicomponent sol-gel, necessary to ensure that no conflicting morphologies and structures would degrade the electrochemical performances, can be obtained when the sol-gel has a polymer-like structure and uniformly bound ions; this can be achieved by using additional multifunctional reagents, namely cross-linkers.

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46

Mead, Paul E., Anne E. Deconinck, Tara L. Huber, Stuart H. Orkin, and Leonard I. Zon. "Primitive erythropoiesis in theXenopusembryo: the synergistic role of LMO-2, SCL and GATA-binding proteins." Development 128, no. 12 (June 15, 2001): 2301–8. http://dx.doi.org/10.1242/dev.128.12.2301.

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Hematopoietic stem cells are derived from ventral mesoderm during vertebrate development. Gene targeting experiments in the mouse have demonstrated key roles for the basic helix-loop-helix transcription factor SCL and the GATA-binding protein GATA-1 in hematopoiesis. When overexpressed in Xenopus animal cap explants, SCL and GATA-1 are each capable of specifying mesoderm to become blood. Forced expression of either factor in whole embryos, however, does not lead to ectopic blood formation. This apparent paradox between animal cap assays and whole embryo phenotype has led to the hypothesis that additional factors are involved in specifying hematopoietic mesoderm. SCL and GATA-1 interact in a transcriptional complex with the LIM domain protein LMO-2. We have cloned the Xenopus homolog of LMO-2 and show that it is expressed in a similar pattern to SCL during development. LMO-2 can specify hematopoietic mesoderm in animal cap assays. SCL and LMO-2 act synergistically to expand the blood island when overexpressed in whole embryos. Furthermore, co-expression of GATA-1 with SCL and LMO-2 leads to embryos that are ventralized and have blood throughout the dorsal-ventral axis. The synergistic effect of SCL, LMO-2 and GATA-1, taken together with the findings that these factors can form a complex in vitro, suggests that this complex specifies mesoderm to become blood during embryogenesis.

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47

Tremblay, Mathieu, Sabine Herblot, Margarita Todorova, Veronique Lisi, Francois Major, Sebastien Lemieux, and Trang Hoang. "Identification of SCL and LMO Oncogenes as Transcriptional Repressors of HEB/E2A in the Thymus through Functional Genomic/Genetic Approaches." Blood 110, no. 11 (November 16, 2007): 2649. http://dx.doi.org/10.1182/blood.v110.11.2649.2649.

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Abstract The SCL and LMO oncogenes are frequently activated in childhood T cell acute leukemia (T-ALL). SCL is a bHLH transcription factor that forms heterodimers with other members, specifically HEB and E2A. SCL can either activate or repress transcription but its mechanism of action as an oncogene remains to be clarified. Ectopic expression of SCL and LMO in transgenic mice causes thymocyte differentiation arrest during the preleukemic phase with aberrant differentiation at the DN3–DN4 stage, prior to the acquisition of CD4 and CD8. We therefore took several approaches to define the mechanism underlying this differentiation arrest. Using a CD3e-deficient background to eliminate preTCR signaling effects, an event that is not essential for leukemogenesis, we first analyzed global gene expression of pre-leukemic SCLtg/LMOtg DN3 thymocytes against their non-transgenic littermates via the Affymetrix platform. In this context, SCL/LMO globally affects the expression of both positive and negative targets of E2A/HEB. These results were confirmed by real-time quantitative PCR, showing that SCL/LMO repress E2A/HEB activity. Second, bioinformatic analysis of genes significantly affected by SCL/LMO allowed us to identify phylogenetically conserved HEB/E2A binding sites within the promoter regions of half of these genes. E2A/HEB binding was directly assessed through chromatin immunoprecipitation of primary thymocytes, confirming known target genes and revealing novel ones. This assay also showed that SCL associates with HEB and/or E2A on DNA. Moreover, structure function analysis indicate that transcription inhibition by SCL depends on its HLH domain but not on LMO interaction. We therefore conclude that SCL inhibits thymocyte differentiation by inhibiting E2A/HEB targets that include genes required for thymocyte differentiation, cell signalling, DNA repair and replication. Finally, using a genetic approach we show that SCL/LMO collaborates with HEB haploinsufficiency in inducing leukemia. Our observations therefore reveal that the repression of HEB/E2A by SCL/LMO is a crucial step in T cell transformation. Support from CIHR and FRSQ.

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48

Zhang, Jiawen, Peiying Zheng, Jing Li, Yijing Yang, Shaoxiao Zeng, Jianqing Qiu, and Shaoling Lin. "Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage." Foods 11, no. 6 (March 11, 2022): 808. http://dx.doi.org/10.3390/foods11060808.

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Sono-photodynamic sterilization technology (SPDT) has become a promising non-thermal food sterilization technique because of its high penetrating power and outstanding microbicidal effects. In this study, Listeria monocytogenes (LMO) was effectively inactivated using curcumin as the sono-photosensitizer activated by ultrasound and blue LED light. The SPDT treatment at optimized conditions yielded a 4-log reduction in LMO CFU. The reactive oxygen species (ROS) production in LMO upon SPDT treatment was subsequently investigated. The results demonstrated SPDT treatment-induced excessive ROS generation led to bacterial cell deformation and membrane rupture, as revealed by the scanning electron microscope (SEM) and cytoplasmic material leakage. Moreover, agarose gel electrophoresis and SDS-PAGE further revealed that SPDT also triggered bacterial genomic DNA cleavage and protein degradation in LMO, thus inducing bacterial apoptosis-like events, such as membrane depolarization.

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49

Ma, Pianpian, Na Lei, Bo Yu, Yongkun Liu, Guohua Jiang, Jianming Dai, Shuhong Li, and Qiuling Lu. "Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition." Nanomaterials 9, no. 12 (November 24, 2019): 1676. http://dx.doi.org/10.3390/nano9121676.

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La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected.

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50

Suwazono, Yutaka, Hiroki Nagai, and Mitsunobu Sato. "Photovoltaic Lithium-ion Battery with Layer-Structured Li2MnIII0.2MnIV0.8O2.9 Thin Film Chemically Fabricated for Cathodic Active Material." Energies 13, no. 6 (March 21, 2020): 1486. http://dx.doi.org/10.3390/en13061486.

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Dilithium manganese oxide (LMO) thin film was newly fabricated as an active material on a fluorinated-tin-oxide pre-coated glass electrode by a wet process. A stable LMO precursor solution was developed through the reaction of lithium and manganese acetates with butylamine in ethanol. A spin-coated precursor film was heat-treated at 500 °C in air for 0.5 h. The X-ray diffraction pattern indicates that the resultant film consists of layer-structured LMO crystals. The X-ray photoelectron spectra of LMO thin film suggests that the ratio of Mn3+/Mn4+ is 1/4, and the chemical formula can be expressed as Li2MnO2.9. A device was assembled with O-deficient LMO and TiO2 thin films as each active material, along with an electrolytic solution involving LiPF6. The charging voltages (2.67 and 1.45 V) of this device were recorded by applying a constant current of 0.2 mA and using 1-sun irradiation with no external power supply, respectively. The voltages delivered by this cobalt-free device were 0.63 and 0.13 V higher, respectively, than the corresponding device assembled with lithium cobalt oxide as a cathodic active material.

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Journal articles on the topic 'LMO'

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