Academic literature on the topic 'Oxalate group'

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Journal articles on the topic "Oxalate group"

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Kherfi, Hamza, Malika Hamadène, Achoura Guehria-Laidoudi, Slimane Dahaoui, and Claude Lecomte. "Comparative study of two oxalate isomers with different dimensionalities." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C656. http://dx.doi.org/10.1107/s2053273314093437.

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We report here two bimetallic oxalate isomers with the same chemical formula [RbCr(C2O4)2(H2O)2], which have been synthesized respectively by a slow evaporation method at room temperature (compound I) [1], and under hydrothermal conditions (compound II) [2] with the same starting salts. Their structures show a several discrepancies, due probably to the synthetic conditions. Indeed, the compound I crystallizes in space group C2/m with the Cr, Rb atoms and one oxygen from water molecule lying on special positions. Moreover, the unique oxalate ligand forms a bridge between metal centers. The Cr a
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Puzan, Anna N., Vyacheslav N. Baumer, and Pavel V. Mateychenko. "Novel modification of anhydrous transition metal oxalates from powder diffraction." Acta Crystallographica Section C Structural Chemistry 73, no. 11 (2017): 911–16. http://dx.doi.org/10.1107/s2053229617012839.

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The known metal–C2O4 structures may be divided into two modifications, α and β. The α-modification has an order–disorder struxture, revealing one-dimensional disordering of the metal–oxalate chains, and the β-modification is ordered. The crystal structures of orthorhombic γ-MnC2O4 {poly[μ-oxalato-manganese(II)]; space group Pmna, a = 7.1333 (1), b = 5.8787 (1), c = 9.0186 (2) Å, V = 378.19 (1) Å3, Z = 4 and Dx = 2.511 Mg m−3} and γ-CdC2O4 {poly[μ-oxalato-cadmium(II)]; space group Pmna, a = 7.3218 (1), b = 6.0231 (1), c = 9.2546 (2) Å, V = 408.13 (1) Å3, Z = 4 and Dx = 3.262 Mg m−3} have been o
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Akulenko, I., V. Stetska, T. Serhiychuk, G. Tolstanova, and N. Stepanova. "Dependence of quantitative composition of oxalate-degrading bacteria in fecal biopsy of rats on the quantity of oxalates in the diet." Bulletin of Taras Shevchenko National University of Kyiv. Series: Biology 75, no. 1 (2018): 55–58. http://dx.doi.org/10.17721/1728_2748.2018.75.55-58.

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Changes in the composition of intestinal microbiota, namely the reduction of microorganisms capable of metabolizing oxalates, is one of the main factors in the development of hyperoxaluria. The purpose of this study was to determine the quantity of oxalate-degrading bacteria in fecal biopsy of different species of laboratory animals and to investigate the relationship between the amount of oxalate in the diet and the level of oxalate-degrading bacteria. The object of the study was the content of oxalate-degrading bacteria in fecal biopsy of experimental animals: nonbreeding rats (n = 12); Wist
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I., Akulenko, Stetska V., Serhiychuk T., Tolstanova G., and Stepanova N. "Dependence of quantitative composition of oxalate-degrading bacteria in fecal biopsy of rats on the quantity of oxalates in the diet." Bulletin of Taras Shevchenko National University of Kyiv - Biology, no. 75 (1) (January 10, 2018): 55–58. https://doi.org/10.17721/1728_2748.2018.75.55-58.

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Changes in the composition of intestinal microbiota, namely the reduction of microorganisms capable of metabolizing oxalates, is one of the main factors in the development of hyperoxaluria. <strong>The purpose</strong> of this study was to determine the quantity of oxalate-degrading bacteria in fecal biopsy of different species of laboratory animals and to investigate the relationship between the amount of oxalate in the diet and the level of oxalate-degrading bacteria. <strong>Methods. </strong>The object of the study was the content of oxalate-degrading bacteria in fecal biopsy of experiment
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Fufa, Tilahun Wondimu, Happiness Ogba Oselebe, Wosene Gebreselassie Abetw, and Charles Okechukwu Amadi. "Review of acridity in taro [Colocasia esculenta (L) Schott]: Its health and economic impact, and possible reduction mechanisms." Journal of Agricultural Science and Practice 6, no. 5 (2021): 156–64. http://dx.doi.org/10.31248/jasp2021.311.

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Taro is primarily grown for the corm, which is a staple food for millions of people. It is an annual herbaceous plant that belongs to the oxalate-rich food group. Oxalate is a naturally occurring plant metabolite that is present in all plant-derived human diets. The accumulation of oxalate by crops and pasture plants has a negative impact on the nutritional quality of foods and feeds. Oxalate is a poisonous organic acid that has a significant impact on the eating quality. Acridity causes swelling of the mouth and throat. Oxalate-rich foods also reduce calcium bioavailability and increase the r
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Manche, Alexis Gilles, Atin Pramanik, and A. Robert Armstrong. "The Challenge of Polyanion Redox Process in Oxalates." ECS Meeting Abstracts MA2024-01, no. 5 (2024): 707. http://dx.doi.org/10.1149/ma2024-015707mtgabs.

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Lately, polyanionic compounds have received great interest as alternative cathode materials to conventional oxides due to their different advantages in cost, safety, structural stability, as well as being environmentally friendly. However, the vast majority of polyanionic cathodes reported so far rely primarily upon the redox reaction of the transition metal for lithium/sodium transfer. The development of multielectron redox-active cathode materials is a top priority for achieving high energy density with long cycle life in the next-generation secondary battery applications. Triggering anion r
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Manish, Bhatt, Ujaskumar Ashvinbhai Patel, Abbas Shakir Hussain Sabunwala Ali, and Saini Rishabh. "Spectrum of Renal Calculi Composition in Southern Rajasthan Using Infrared Spectroscopy." International Journal of Toxicological and Pharmacological Research 13, no. 9 (2023): 63–66. https://doi.org/10.5281/zenodo.11079963.

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<strong>Introduction:</strong>&nbsp;The aim of this study was to evaluate the chemical composition of urinary stones and pattern of changes according to the patient&rsquo;s age in Southern Rajasthan using infrared spectroscopy (IRS).&nbsp;<strong>Materials and Methods:</strong>&nbsp;A prospective study of 500 urolithiasis patients was carried out in a tertiary care center from August 2021 to August 2023. Chemical composition of urinary stones was analyzed using IR spectroscopy, and a subgroup study based on the patient&rsquo;s age was done (8&ndash;12 years &ndash; Group A, 13&ndash;18 years &
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Kherfi, Hamza, Mohamed Al Amine Benhacine, and Malika Hamadene. "A novel layered structure of the heterometallic oxalate compound [NH2(CH3)2]2[NaFe(C2O4)3]·0.33NH(CH3)2·0.33H2O: synthesis, crystal structure and thermal decomposition." Acta Crystallographica Section C Structural Chemistry 80, no. 12 (2024): 798–805. http://dx.doi.org/10.1107/s2053229624011185.

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The synthesis, single-crystal X-ray structure determination and thermal analysis are reported for a novel heteronuclear oxalate compound synthesized from a mixture of Fe and Na salts, oxalic acid and N,N-dimethylformamide (DMF) in aqueous solution. The new metallooxalate compound was obtained and identified as a dimethylammonium tris(oxalato)ferrate(III), namely, poly[[bis(dimethylammonium) [tri-μ-oxalato-sodium(I)iron(III)]]–dimethylamine–water (3/1/1)], [NH2(CH3)2]2[NaFe(C2O4)3]·0.33NH(CH3)2·0.33H2O, which crystallizes in the orthorhombic noncentrosymmetric space group C2221. In this novel s
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Li, Jia Ming, Shu Qing Xu та Zhong Feng Shi. "Molecular and Crystal Structure Analysis of an Oxalate-Bridged Sodium 2D Polymer: [Na(μ1,1,2,3-Oxalato)(di-μ1,1-H2O)]N". Advanced Materials Research 399-401 (листопад 2011): 916–20. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.916.

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The title compound, [Na(μ1,1,2,3-oxalato)(di-μbelongs to triclinic, space group P-1 with a = 5.6982 (11), b = 6.5040 (12), c = 6.6647 (13) Å, α = 75.040 (2), β = 84.990 (3), γ = 70.072 (3), V = 224.34 (7) Å3, C2H3NaO5, Mr = 130.03, Z = 2, Dc = 1.925 g/cm3, μ = 0.270 mm–1and F(000) = 132. Each sodium ions is located on crystallographic inversion symmetry centre and surrounded by six oxygen donors from three oxalate ligands and two di-μ1,1-waters in a distorted octahedron geometry. Two planar 4-member cyclβes crystallographic inversion are found in alternate repeated Na2O2subunit, which is furth
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Piro, O. E., G. A. Echeverría, and E. J. Baran. "Spontaneous enantiomorphism in poly-phased alkaline salts of tris(oxalato)ferrate(III): crystal structure of cubic NaRb5[Fe(C2O4)3]2." Acta Crystallographica Section E Crystallographic Communications 74, no. 7 (2018): 905–9. http://dx.doi.org/10.1107/s2056989018008022.

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We show here that the phenomenon of spontaneous resolution of enantiomers occurs during the crystallization of the sodium and rubidium double salts of the transition metal complex tris(oxalato)ferrate(III), namely sodium pentarubidium bis[tris(oxalato)ferrate(III)], NaRb5[Fe(C2O4)3]2. One enantiomer of the salt crystallizes in the cubic space groupP4332 withZ= 4 and a Flack absolute structure parameterx= −0.01 (1) and its chiral counterpart in the space groupP4132 withx= −0.00 (1). All metal ions are at crystallographic special positions: the iron(III) ion is on a threefold axis, coordinated b
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Dissertations / Theses on the topic "Oxalate group"

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Fakier, Saajidah. "The effect of inositol-hexakisphosphate (phytate) on urinary risk factors for calcium oxalate urolithiasis in South African population groups with different kidney stone risk profiles : theoretical modelling, in vitro crystallisation experiments and in vivo human studies." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/19975.

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The principal aims of this thesis were to establish whether soluble calcium-phytate complexes inhibit calcium oxalate crystallisation and whether a higher dietary intake of phytate in South African black subjects compared to white subjects may contribute to the relative rarity of urolithiasis in this group. Potentiometric titrations were conducted to determine thermodynamic binding constants of soluble calcium-phytate complexes. Binding constants of seven complexes were identified. These were included in the data base of the Joint Experts Speciation System computer program to model the effect
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Book chapters on the topic "Oxalate group"

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Izatulina, A. R., M. A. Kuz’mina, A. V. Korneev, et al. "Crystal Chemistry of Biofilm and Synthetic Oxalates of the Humboldtine Group." In Springer Proceedings in Earth and Environmental Sciences. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23390-6_77.

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Kendir, Gulsen. "Plant Toxicants." In Food Safety. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053358787.12.

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Poisonous plants are the third biggest recognized class of poisons worldwide. There is a lengthy history of poisonous plants. The poisonous chemicals that plants possess are what give them their toxic characteristics. Toxic compounds found in plants belong to the group of substances called secondary metabolites, which generally do not play a significant role in maintaining the life processes of plants but are important in helping plants adapt to their environment and cope with stress. These compounds found in plants can be found in different amounts in different parts of plants. In this sectio
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Hakim, Alan J., Gavin P. R. Clunie, and Inam Haq. "The crystal arthropathies." In Oxford Handbook of Rheumatology. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199587186.003.0007.

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Gout and hyperuricaemia 270 Calcium pyrophosphate dihydrate disease 276 Basic calcium phosphate associated disease 279 Calcium oxalate arthritis 280 The crystal arthropathies include gout, calcium pyrophosphate deposition disease (CPPD) or pseudogout, basic calcium phosphate (BCP) associated syndromes, and calcium oxalate arthritis. • In its most general sense, gout is a group of conditions characterized by hyperuricaemia and uric acid crystal formation. These clinical conditions include arthritis, tophaceous gout, uric acid nephrolithiasis, and gouty nephropathy. In its more commonly assumed
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Nikalje, Ganesh Chandrakant, Apurva Chonde, Sudhakar Srivastava, and Penna Suprasanna. "Wild Vegetables of the Family Araceae." In Wild Vegetables: Morphology, Phytochemistry and Utility Part 1. BENTHAM SCIENCE PUBLISHERS, 2025. https://doi.org/10.2174/9789815313116125010012.

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The Araceae family, also known as the Arum family, is a large and diverse group of flowering plants comprising over 4,000 species found in tropical and subtropical regions worldwide. Members of the Araceae are renowned for their distinctive inflorescence, which features a fleshy stalk called a spadix, typically encircled by a modified leaf bract known as a spathe. Many species in this family are rich in carbohydrates and dietary fibers. However, Araceae plants also contain calcium oxalate crystals, called raphides, which can irritate the skin and mucous membranes if ingested (Almaaty et al., 2
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Suvarna, Ch Malathi, Subhakar Raju R, Narender Malothu, and Chakravarthi Guntupalli. "Ethanolic Plant Extracts as Effective Antiurolithiatic Agents Against Oxalate Induced Hyperoxaluria in Wistar Rats." In Current Trends in Drug Discovery, Development and Delivery (CTD4-2022). Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/9781837671090-00704.

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High urinary calcium and oxalate levels, as well as the lack of crystallization inhibitors, are the typical factors in the formation of calcium oxalate crystals. The spesia populnea (T. pop) and Lantana camara (L. cam) are two plants best known for their alcoholic preparations, which have anti-inflammatory, antiurolithiatic, analgesic, anxiolytic, and diuretic properties. In the present study, we examined how ethanolic extracts of the chosen plants affected hyperoxaluria-induced nephrolithiasis in the rat model. The animal groups administered with plant extracts (at 400 mg kg-1) depicted a ris
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Sposito, Garrison. "Soil Humus." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0007.

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Biomoleculesare compounds synthesized to sustain the life cycles of organisms. In soil humus, they are usually products of litter degradation, root excretion, and microbial metabolism, ranging in molecular structure from simple organic acids to complex biopolymers. Organic acids are among the best-characterized biomolecules. Table 3.1 lists five aliphatic (meaning the C atoms are arranged in open-chain structures) organic acids associated commonly with the soil microbiome. These acids contain the unit R—COOH, where COOH is the carboxyl groupand R represents either H or an organic moiety. The c
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Kaur, Anroop, Sukhpreet Kaur, Ajinder Kaur, Navraj Kaur Sarao, and Devender Sharma. "Pathogenesis-Related Proteins and Their Transgenic Expression for Developing Disease-Resistant Crops: Strategies Progress and Challenges." In Plant Breeding - New Perspectives [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106774.

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Various pathogenic microorganisms (such as fungi, bacteria, viruses and nematodes) affect plant viability and productivity. However, plants combat these pathogens by inducing their defense mechanism to sustain their fitness. The aggregation of pathogenesis-related (PR) proteins in response to invading pathogens is a crucial component of a plant’s self-defense mechanism. PR proteins induce innate resistance in plants through fungal cell wall disintegration, membrane permeabilization, transcriptional suppression, and ribosome inactivation. Earlier studies have demonstrated their crucial role in
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Nikalje, Ganesh Chandrakant, Apurva Chonde, Sudhakar Srivastava, and Penna Suprasanna. "Wild Vegetables of the Family Basellaceae." In Wild Vegetables: Morphology, Phytochemistry and Utility Part 1. BENTHAM SCIENCE PUBLISHERS, 2025. https://doi.org/10.2174/9789815313116125010015.

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The Basellaceae family, also known as the Madeira vine family, is a small group of flowering plants with 4 genera and 19 species. Basella is a great choice for weight management or healthy eating plans. A 100-gram serving of raw Basella leaves contains only about 19 calories and negligible fat. The members are rich in beta-carotene, Vitamin C, iron, calcium, magnesium, potassium, manganese, folate, dietary fiber, and flavonoids. They also contain anti-nutritional compounds like oxalates and phytates (Kumar et al., 2015).
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Nikalje, Ganesh Chandrakant, Apurva Chonde, Sudhakar Srivastava, and Penna Suprasanna. "Wild Vegetables of the Family Asparagaceae." In Wild Vegetables: Morphology, Phytochemistry and Utility Part 1. BENTHAM SCIENCE PUBLISHERS, 2025. https://doi.org/10.2174/9789815313116125010013.

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The Asparagaceae family, also known as the Asparagus family, is a large and diverse group of flowering plants with 153 genera comprising 2,900 species worldwide (Stevens 2020). Generally, the flowers are showy and “lily-like” with six tepals. Many Asparagaceae members are good sources of essential vitamins, minerals such as folate, vitamin K, vitamin C, and potassium, vitamin B6, and fiber. Some members also contain prebiotic inulin fiber, which helps promote gut health. However, some members contain antinutritional compounds such as Fructans, Saponins, Oxalates, etc.
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Agrawal, Pratibha S., M. K. N. Yenkie, M. G. Bhotmange, B. D. Deshpande, and S. J. Dhoble. "Degradation of Substituted Benzoic Acids Related to Structural Reactivity." In Water Pollution Sources and Purification: Challenges and Scope. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815050684122010006.

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The existence of organic acids in aqueous waste continues to be an important environmental concern because of the odor and toxicity they impart to water. The photochemical degradation of benzoic acids (BA) and some of the substituted benzoic acids (SBA), which act as environmental pollutants, are studied in the present investigation using the Advanced Oxidation Processes (AOPs) and combinations of different oxidants and UV irradiation (UV/H2O2 , UV/TiO2 , UV/ZnO, and Fe(III)- oxalate complex). The photo-oxidative degradation of these pollutants was followed by studying their concentration deca
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Conference papers on the topic "Oxalate group"

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Kweik, Amannie, and Zahid Amjad. "Study on the Effect of Polymer Architecture in Inhibiting Calcium Oxalate Precipitation." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13014.

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Abstract In this study, the effect of polymer architecture (i.e., composition, functional group, monomer type, etc.) on calcium oxalate (CaOx) precipitation in aqueous solution was investigated using the spontaneous precipitation method. The polymers tested include: natural, bio-, and synthetic homo- and copolymers. The experimental results show that performance of polymers as CaOx inhibitors strongly depends on polymer architecture and type and charge of comonomers. In general, polymers containing carboxyl group perform better than co- and terpolymers containing hydrophobic and bulky comonome
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Sikes, C. Steven, Andrzej Wierzbicki, and J. D. Sallis. "Molecular Mechanisms of Control of Formation of Calcium Oxalate." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95473.

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Abstract The design of inhibitors of crystallization is aided by an understanding of the binding of the inhibitors at the molecular level and the influence of the binding on crystal morphology. Binding of citrate and phosphocitrate to calcium oxalate monohydrate (COM) crystals has been studied using scanning electron microscopy and molecular modeling. The COM crystal lattice presents two distinct surfaces that are not only calcium-rich but also have oxalate groups that are perpendicular to the liquid interface. This offers the best possibility for interaction with incoming anionic groups of an
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Klapötke, Thomas. "New secondary explosives and oxidizers developed at LMU." In 11th International Scientific Conference on Defensive Technologies - OTEX 2024. Military Technical Institute, Belgrade, 2024. http://dx.doi.org/10.5937/oteh24001k.

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The energetic materials research group at LMU has been interested in the synthesis and energetic properties of new explosives and rocket propellant ingredients for many years. Out of the many interesting compounds which we have prepared over the years, the most promising candidate compound for use in real-life applications is the secondary explosive TKX-50. An overview of the synthesis and properties of TKX-50 will be given, as well as recent aspects we have investigated. The progress and development of new CHNO-based oxidizers will also be discussed, focusing predominantly on 2,2,2-trinitroet
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Reports on the topic "Oxalate group"

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Dickman, Martin B., and Oded Yarden. Genetic and chemical intervention in ROS signaling pathways affecting development and pathogenicity of Sclerotinia sclerotiorum. United States Department of Agriculture, 2015. http://dx.doi.org/10.32747/2015.7699866.bard.

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Abstract: The long-term goals of our research are to understand the regulation of sclerotial development and pathogenicity in S. sclerotior11111. The focus in this project was on the elucidation of the signaling events and environmental cues involved in the regulation of these processes, utilizing and continuously developing tools our research groups have established and/or adapted for analysis of S. sclerotiorum, Our stated objectives: To take advantage of the recent conceptual (ROS/PPs signaling) and technical (amenability of S. sclerotiorumto manipulations coupled with chemical genomics and
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