Добірка наукової літератури з теми "Lactates"

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Статті в журналах з теми "Lactates":

1

Opdahl, Lee J., Ricky W. Lewis, Lee A. Kalcsits, Tarah S. Sullivan, and Karen A. Sanguinet. "Plant Uptake of Lactate-Bound Metals: A Sustainable Alternative to Metal Chlorides." Biomolecules 11, no. 8 (July 2021): 1085. http://dx.doi.org/10.3390/biom11081085.

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Global agricultural intensification has prompted investigations into biostimulants to enhance plant nutrition and soil ecosystem processes. Metal lactates are an understudied class of organic micronutrient supplement that provide both a labile carbon source and mineral nutrition for plant and microbial growth. To gain a fundamental understanding of plant responses to metal lactates, we employed a series of sterile culture-vessel experiments to compare the uptake and toxicity of five metals (Zn, Mn, Cu, Ni, and Co) supplied in lactate and chloride salt form. Additionally, primary root growth in plate-grown Arabidopsis thaliana seedlings was used to determine optimal concentrations of each metal lactate. Our results suggest that uptake and utilization of metals in wheat (Triticum aestivum L.) when supplied in lactate form is comparable to that of metal chlorides. Metal lactates also have promotional growth effects on A. thaliana seedlings with optimal concentrations identified for Zn (0.5–1.0 µM), Mn (0.5–1.0 µM), Cu (0.5 µM), Ni (1.0 µM), and Co (0.5 µM) lactate. These findings present foundational evidence to support the use of metal lactates as potential crop biostimulants due to their ability to both supply nutrients and stimulate plant growth.
2

Lamberti, Fabio M., Luis A. Román-Ramírez, Paul Mckeown, Matthew D. Jones, and Joseph Wood. "Kinetics of Alkyl Lactate Formation from the Alcoholysis of Poly(Lactic Acid)." Processes 8, no. 6 (June 2020): 738. http://dx.doi.org/10.3390/pr8060738.

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Alkyl lactates are green solvents that are successfully employed in several industries such as pharmaceutical, food and agricultural. They are considered prospective renewable substitutes for petroleum-derived solvents and the opportunity exists to obtain these valuable chemicals from the chemical recycling of waste poly(lactic acid). Alkyl lactates (ethyl lactate, propyl lactate and butyl lactate) were obtained from the catalysed alcoholysis reaction of poly(lactic acid) with the corresponding linear alcohol. Reactions were catalysed by a Zn complex synthesised from an ethylenediamine Schiff base. The reactions were studied in the 50–130 °C range depending on the alcohol, at autogenous pressure. Arrhenius temperature-dependent parameters (activation energies and pre-exponential factors) were estimated for the formation of the lactates. The activation energies (Ea1, Ea2 and Ea−2) for alcoholysis in ethanol were 62.58, 55.61 and 54.11 kJ/mol, respectively. Alcoholysis proceeded fastest in ethanol in comparison to propanol and butanol and reasonable rates can be achieved in temperatures as low as 50 °C. This is a promising reaction that could be used to recycle end-of-life poly(lactic acid) and could help create a circular production economy.
3

SHELEF, LEORA A. "Antimicrobial Effects of Lactates: A Review." Journal of Food Protection 57, no. 5 (May 1994): 445–50. http://dx.doi.org/10.4315/0362-028x-57.5.445.

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Sodium lactate is used as humectant and flavor enhancer in meat and poultry products, and there is growing evidence of antimicrobial properties of the salt. Potassium and calcium lactate are equally effective in controlling growth of aerobes and anaerobes in meats, and antibotulinal and antilisterial activities of the lactate anion have been established. The specific action of lactate on the microbial cell is not well understood. No intracellular pH lowering effect could be demonstrated, and the reported small decreases in water activity appear insufficient to explain the effect. Other explanations have been proposed but not yet confirmed. Although lactates appear to be bacteriostatic, their ability to control spoilage and pathogenic bacteria in fresh and processed meat favors their use, particularly in refrigerated meat products in combination with other microbial inhibitors.
4

Lomba, Laura, Beatriz Giner, Estefanía Zuriaga, Ignacio Gascón, and Carlos Lafuente. "Thermophysical properties of lactates." Thermochimica Acta 575 (January 2014): 305–12. http://dx.doi.org/10.1016/j.tca.2013.11.010.

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5

Schreurs, Victor V. A. M., and Gertjan Schaafsma. "Lactic acid and lactates." Nutrafoods 9, no. 1 (January 2010): 7–16. http://dx.doi.org/10.1007/bf03223326.

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6

Walsh, Dominic, Noelia M. Sanchez-Ballester, Katsuhiko Ariga, Akihiro Tanaka, and Mark Weller. "Chelate stabilized metal oxides for visible light photocatalyzed water oxidations." Green Chemistry 17, no. 2 (2015): 982–90. http://dx.doi.org/10.1039/c4gc01604a.

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Lactate-stabilized calcium manganese oxide and cobalt hydroxide nanoparticles were utilized as catalysts in visible light photocatalyzed water oxidations. Chelated bi-metallic catalysts captured decomposed cobalt based electron acceptor and gave prolonged two stage reactions. Hydroxylated Co–lactates gave high TOF and O2 yields. Chelation produced extended reactions, higher yields and reduced waste.
7

Grab, Tobias, and Stefan Bräse. "Efficient Synthesis of Lactate-Containing Depsipeptides by the Mitsunobu Reaction of Lactates." Advanced Synthesis & Catalysis 347, no. 14 (November 2005): 1765–68. http://dx.doi.org/10.1002/adsc.200404252.

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8

Taéron, Corinne. "Les lactates sous haute surveillance." Revue Française des Laboratoires 2002, no. 345 (September 2002): 10–11. http://dx.doi.org/10.1016/s0338-9898(02)80242-6.

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9

VELUGOTI, PADMANABHA REDDY, LALIT K. BOHRA, VIJAY K. JUNEJA, and HARSHAVARDHAN THIPPAREDDI. "Inhibition of Germination and Outgrowth of Clostridium perfringens Spores by Lactic Acid Salts during Cooling of Injected Turkey†." Journal of Food Protection 70, no. 4 (April 2007): 923–29. http://dx.doi.org/10.4315/0362-028x-70.4.923.

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Inhibition of Clostridium perfringens spore germination and outgrowth by lactic acid salts (calcium, potassium, and sodium) during exponential cooling of injected turkey product was evaluated. Injected turkey samples containing calcium lactate, potassium lactate, or sodium lactate (1.0, 2.0, 3.0, or 4.8% [w/w]), along with a control (product without lactate), were inoculated with a three-strain cocktail of C. perfringens spores to achieve a final spore population of 2.5 to 3.0 log CFU/g. The inoculated product was heat treated and exponentially cooled from 54.5 to 7.2°C within 21, 18, 15, 12, 9, or 6.5 h. Cooling of injected turkey (containing no antimicrobials) resulted in C. perfringens germination and an outgrowth of 0.5, 2.4, 3.4, 5.1, 5.8, and 5.8 log CFU/g when exponentially cooled from 54.4 to 7.2°C in 6.5, 12, 15, 18, and 21 h, respectively. The incorporation of antimicrobials (lactates), regardless of the type (Ca, Na, or K salts), inhibited the germination and outgrowth of C. perfringens spores at all the concentrations evaluated (1.0, 2.0, 3.0, and 4.8%) compared to the injected turkey without acetate (control). Increasing the concentrations of the antimicrobials resulted in a greater inhibition of the spore germination and outgrowth in the products. In general, calcium lactate was more effective in inhibiting the germination and outgrowth of C. perfringens spores at ≥1.0% concentration than were sodium and potassium lactates. Incorporation of these antimicrobials in cooked, ready-to-eat turkey products can provide additional protection in controlling the germination and outgrowth of C. perfringens spores during cooling (stabilization).
10

Dépret, François, and Matthieu Legrand. "Are capillary and arterial lactates interchangeable?" Anaesthesia Critical Care & Pain Medicine 36, no. 3 (June 2017): 149. http://dx.doi.org/10.1016/j.accpm.2017.04.001.

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Дисертації з теми "Lactates":

1

Crege, Danilo Roberto Xavier de Oliveira 1981. "Implantação da tecnica de estudo funcional de adipocitos isolados de tecido adiposo visceral de humanos eutroficos e quantificação da produção de lactato." PublishedVersion, [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314099.

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Orientador: Dora Maria Grassi-Kassisse
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia
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Resumo: O estudo da célula adiposa como entidade funcional do tecido adiposo iniciou-se quando Rodbell em 1964 descreveu a técnica de isolamento de adipócitos de tecido adiposo de ratos e apresentou os efeitos de hormônios no metabolismo de glicose e na lipólise destas células. A partir de então, numerosos são os artigos descrevendo a quantificação de diferentes receptores, bem como, os mensageiros envolvidos com a ativação dos mesmos em célula adiposa. A maioria dos estudos é baseada nesta primeira descrição de Rodbell, entretanto, estes apresentam algumas modificações. Para ensaios provenientes de adipócitos de humanos, a citação também se refere a Rodbell com modificações. O estudo do funcionamento da célula adiposa nas diferentes espécies é emergente, devido à presença na população ocidental da obesidade como pandemia. Além disto, o ensaio de adipócitos isolados de tecido adiposo humano é uma importante ferramenta para estudos farmacológicos de novos fármacos...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: The study of adipose cell as a functional unit of the adipose tissue, began when Rodbell in 1964 described the adipocytes isolation procedure of rat adipose tissue, and showed the effects of hormones in the metabolism of glucose and in lipolysis of these cells. Since that, a great number of researches describing the number of adrenoceptors as well the molecular mechanisms involved with the activation of these receptors has been published. Almost all studies use this first description of Rodbell, however with some modifications. The isolation procedure to human adipocytes also refer the Rodbell's original procedure with modifications. The functional study of adipose tissue in different species is emerging due the presence of obesity as a pandemic problem in occidental population. Beside this, the isolation of adipocytes from the adipose tissue is an important tool to new pharmacological studies of novel drugs...Note: The complete abstract is available with the full electronic digital thesis or dissertations
Mestrado
Fisiologia
Mestre em Biologia Funcional e Molecular
2

Moraes, Rafael Carvalho de 1982. "Proposta e verificação da validade de testes de limiar anaerobico para natação do nado crawl." PublishedVersion, [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275161.

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Orientador: Orival Andries Junior
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica
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Resumo: No esporte de rendimento a elaboração de testes coerentes para controle do treinamento é fundamental. O objetivo deste trabalho foi propor e validar testes de Limiar Anaeróbio (LAn) para o nado crawl. Para isso 14 nadadores competitivos em nível estadual (7 Homens e 7 Mulheres) foram selecionados para o estudo. Cada atleta realizou 5 testes de LAn com dois dias de recuperação entre testes, sendo 4 deles consolidados na literatura: testes de 30, 12, 10 minutos (T30¿, T12¿e T10¿respectivamente), um teste de Lactato Mínimo (LACmin) adaptado de Tegtbur et al. (1993), e um teste elaborado e proposto que consistia em oito minutos nadando (T8¿) a uma velocidade máxima e constante. Foram coletadas amostras de sangue para medida da concentração de lactato sanguíneo ([LAC]), freqüência cardíaca (FC), velocidade (Vel) e variação de ritmo durante os percursos. As amostras de sangue foram coletadas antes e em momentos pós testes para verificação da cinética do lactato sanguíneo. A partir dos dados obtidos verificou-se para todos os testes de tempo que não houve variação de ritmo durante o percurso nadado. Para ambos os grupos a velocidade do T30¿ (1,27 m/s ± 0,046 para o Grupo Homens (GH) e 1,10 m/s ± 0,07 para o Grupo Mulheres (GM)) não apresentou diferenças significativas em relação à velocidade do LACmin (1,29 m/s ± 0,035 para GH e 1,14 m/s ± 0,048 para GM) . Para o GH os testes T8¿ (1,37 m/s ± 0,030), T10¿ (1.35 m/s ± 0,043) e T12¿ (1,34 m/s ± 0,031) não mostraram diferenças entre suas velocidades, mas superestimaram as velocidades do T30¿ e LACmin. O mesmo ocorreu para o GM, para os testes T8¿ (1,18 m/s ± 0,050) e T12¿ (1,16 m/s ± 0,059), com exceção para o T10¿ (1,16 m/s ± 0,050) que não apresentou diferenças em relação ao T30¿ e LACmin. Em relação à [LAC] (mmol/L), não houve diferenças significativas entre T8¿ (12.62 ± 1.02) e T12¿ (12.51 ± 2.37) e entre T30¿ (8.02 ± 1.95) e LACmín (7.84 ± 1.80) para o GH sendo que o T10¿ foi o teste que alcançou maior [LAC] (15.66 ± 2.18). Já para o GM houve diferenças entre T8¿ (11.68 ± 1.47) e T30¿ (6.43 ± 2.29), T10¿ (11.82 ± 1.96) e T30¿ e T12¿ (12.06 ± 2.50) e T30¿, mas não houve diferenças entre T30¿ e LACmín (8.43 ± 3.22). A FC não teve correlação com nenhum dos testes realizados tanto em relação à [LAC] sanguíneo quanto em relação à velocidade. Com isso, adotar valores fixos de FC e [LAC] pode sub ou superestimar o desempenho aeróbio de atletas. Desta forma testes incrementais ou mais longos como o T30¿ parecem ser mais adequados para determinação do LAn individual
Abstract: It is essential to set up coherent measurement tests for training control in high performance sports. This study aims to propose and evaluate tests of Anaerobic Threshold (AT) for crawl swimming style. This study involves 14 competitive swimmers at state level: a group of 7 men (Men) and another group of 7 women (Women). Each athlete has performed 5 tests of AT, with two days of recovery among the tests, 4 of which are proposed and consolidated in the literature: tests of 30, 12, 10 minutes (T30¿, T12¿and T10¿, respectively) and one test of Minimum Lactate adapted from Tegtbur et al. (1993). The last test, proposed by the researcher, consists of 8- minute (T8') swimming at maximal and constant speed. All tests measured athletes¿ blood lactate concentration ([LAC]), heart rating (HR), speed (Vel), and test rhythm variation. The blood samples for the verification of blood lactate concentration were collected before and after the test, in order to verify the kinetic of the blood lactate referring to each test. Based on the analysis of the speed and rhythm, it was possible to verify that, in all the time tests, there was no variation of rhythm during the distance athletes swam. Moreover, the speed in T30¿ (1,27 m/s ± 0,046 in the group of men (GH) e 1,10 m/s ± 0,07 for women¿s group (GM)) does not register significant difference for either group when compared to the speed in the Minimum Lactate test (1,29 m/s ± 0,035 for GH e 1,14 m/s ± 0,048 for GM). In the group of men, the T8¿ (1,37 m/s ± 0,030), T10¿ (1.35 m/s ± 0,043) and T12¿ (1,34 m/s ± 0,031) tests do not show differences regarding speed, but overestimate the speed in T30¿ and Minimum Lactate tests. The same is valid for the women¿s group for T8¿ (1,18 m/s ± 0,050) and T12¿ (1,16 m/s ± 0,059), in which the only difference is that the T10¿ showed equivalent readings when compared to the T30¿ and the Minimum Lactate test. About [LAC] the GH do not show differences between T8¿ (12.62 ± 1.02) and T12¿ (12.51 ± 2.37) neither T30¿ (8.02 ± 1.95) and LACmín (7.84 ± 1.80) and the T10¿was the test of higher [LAC] (15.66 ± 2.18). For GM [LAC] show differences between T8¿ (11.68 ± 1.47) and T30¿ (6.43 ± 2.29), T10¿ (11.82 ± 1.96) and T30¿ and T12¿(12.06 ± 2.50) and T30¿, but there was no difference among T30¿ and LACmín (8.43 ± 3.22). The HR did not relate to any tests and can be compared to neither the blood lactate concentration [LAC], with very individualized readings, nor to each test speed. Therefore, the HR should not be seen as a herald of athlete¿s performance. It is possible to conclude that fixing values for HR and blood lactate concentration [LAC] may distort a swimmer¿s performance capacity by either underestimating or overestimating it. So, incremental tests or longer tests, such as T30¿, seem to be more reliable for determining AT on an individual basis
Mestrado
Ciencia do Desporto
Mestre em Educação Física
3

Bertram, Sheila Rae. "Blood lactate levels during exercise : the effects of exercise duration, bicarbonate infusion and beta-receptor antagonism." Master Thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/27262.

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This study examines factors that determine blood lactate accumulation during exercise in order to examine the opposing theories that such accumulation occurs either as a result of muscle anaerobiosis or an "overflow" of oxygen-independent glycolysis.
4

Catcheside, Peter. "Resting forearm blood-tissue lactate and gas exchange kinetics during supine leg exercise." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phc357.pdf.

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Bibliography: leaves 230-255. The work described in this thesis was stimulated by the observation that during leg exercise, resting forearm lactate kinetics appear to resemble closely the blood-tissue exchange kinetics of inert gases that have been reported in many organs during inert gas inhalation. Two mathematical models of forearm lactate uptake were developed, and three series of experiments were conducted to investigate the contribution and impact of passive (inert-like) lactate movements to veno-arterial concentration differences in the resting forearm during leg exercise. The results are discussed.
5

Isola, José Geraldo Meirelles Palma [UNESP]. "Parâmetros clínicos e laboratoriais relacionados ao prognóstico em cães com gastroenterite hospitalizados." PublishedVersion, Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/122009.

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A sepse é uma síndrome de caráter multifatorial e com consequências graves para sobrevida e para os custos de tratamento em cães. Neste contexto a gastroenterite é um representante importante desta síndrome inflamatória de associação infecciosa no campo das urgências veterinárias. Este estudo unicêntrico, prospectivo e de coorte apresentou como objetivo fundamental identificar as variáveis prognósticas associadas com a sobrevivência a curto e médio prazo de 56 cães com gastroenterite, atendidos como urgências e hospitalizados para cuidados intensivos. Foram coletados dados fisiológicos e laboratoriais no momento da admissão de urgência dos pacientes (T0) e 24 horas depois (T24). Desta forma, foram encontradas as relações destes parâmetros com a sobrevivência ou a mortalidade em 24 horas, e aos 7, 30 e 60 dias pós ingresso. Com os resultados obtidos, foram criadas árvores de decisão empregadas na estratificação, previsão e identificação de todas as interações possíveis. A gravidade do quadro clínico, laboratorial e dos antecedentes históricos prediz a mortalidade de pacientes caninos com gastroenterite; e os doentes diagnosticados com parvovirose ou gastroenterite hemorrágica, classificados em sepse grave ou em choque séptico, possuem maior mortalidade tanto às 24 horas quanto aos 7, 30 e 60 dias após atendimento. A queda do potencial de transporte de oxigênio, do potencial oncótico e a alteração metabólica em nível celular foram determinantes no prognóstico dos pacientes, representados respectivamente pelo alto poder prognóstico das variações em 24 horas do hematócrito, das proteínas totais e do lactato sérico, bem como a presença de vasoconstrição periférica grave 24 horas após o início do tratamento, demonstrada pelo maior escore de vasoconstrição. Deste modo, pretendeu-se com este estudo, possibilitar o conhecimento aos Médicos Veterinários de ...
Sepsis is a multifactorial syndrome with serious consequences for survival and costs of treatment in dogs. In this context gastroenteritis is an important representative of this inflammatory syndrome infectious association in the veterinary emergencies area. This single-center, prospective cohort study presented as a fundamental objective to identify the prognostic variables associated with survival in the short and medium term of 56 dogs with gastroenteritis treated in emergency and critical care hospital. Physiological and laboratory datas were collected on admission of emergency patients ( T0 ) and 24 hours later ( T24 ). Thus, the relationship between these parameters and the survival or mortality in 24 hours, and at 7, 30 and 60 days after admission were found. With the results, decision trees used in the stratification, prediction and identification of all possible interactions were created. The severity of the clinical, laboratory findings and historical background predicts mortality in canine patients with gastroenteritis , and patients diagnosed with parvovirus or hemorrhagic gastroenteritis, ranked in severe sepsis or septic shock, have higher mortality both at 24 hours as at 7, 30 and 60 days after treatment. The fall of potential oxygen transport, the oncotic potential and metabolic changes at the cellular level were determining the prognosis of patients, respectively represented by the high prognostic power of variations within 24 hours of hematocrit, total protein and lactate as well as presence of severe peripheral vasoconstriction 24 hours after initiation of treatment, as demonstrated by scores greater vasoconstriction. Thus, it is intended with this study, getting familiar to veterinarians to predict survival in dogs with gastroenteritis based on simple parameters, low cost and easy implementation
6

Isola, José Geraldo Meirelles Palma. "Parâmetros clínicos e laboratoriais relacionados ao prognóstico em cães com gastroenterite hospitalizados /." Text, Jaboticabal, 2014. http://hdl.handle.net/11449/122009.

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Orientador: Áureo Evangelista Santana
Coorientador: Paola Castro Moraes
Banca: José Luiz Laus
Banca: Mirela Tinucci Costa
Banca: Márcio Antônio Brunetto
Banca: Rodrigo Cardoso Rabelo
Resumo: A sepse é uma síndrome de caráter multifatorial e com consequências graves para sobrevida e para os custos de tratamento em cães. Neste contexto a gastroenterite é um representante importante desta síndrome inflamatória de associação infecciosa no campo das urgências veterinárias. Este estudo unicêntrico, prospectivo e de coorte apresentou como objetivo fundamental identificar as variáveis prognósticas associadas com a sobrevivência a curto e médio prazo de 56 cães com gastroenterite, atendidos como urgências e hospitalizados para cuidados intensivos. Foram coletados dados fisiológicos e laboratoriais no momento da admissão de urgência dos pacientes (T0) e 24 horas depois (T24). Desta forma, foram encontradas as relações destes parâmetros com a sobrevivência ou a mortalidade em 24 horas, e aos 7, 30 e 60 dias pós ingresso. Com os resultados obtidos, foram criadas árvores de decisão empregadas na estratificação, previsão e identificação de todas as interações possíveis. A gravidade do quadro clínico, laboratorial e dos antecedentes históricos prediz a mortalidade de pacientes caninos com gastroenterite; e os doentes diagnosticados com parvovirose ou gastroenterite hemorrágica, classificados em sepse grave ou em choque séptico, possuem maior mortalidade tanto às 24 horas quanto aos 7, 30 e 60 dias após atendimento. A queda do potencial de transporte de oxigênio, do potencial oncótico e a alteração metabólica em nível celular foram determinantes no prognóstico dos pacientes, representados respectivamente pelo alto poder prognóstico das variações em 24 horas do hematócrito, das proteínas totais e do lactato sérico, bem como a presença de vasoconstrição periférica grave 24 horas após o início do tratamento, demonstrada pelo maior escore de vasoconstrição. Deste modo, pretendeu-se com este estudo, possibilitar o conhecimento aos Médicos Veterinários de ...
Abstract: Sepsis is a multifactorial syndrome with serious consequences for survival and costs of treatment in dogs. In this context gastroenteritis is an important representative of this inflammatory syndrome infectious association in the veterinary emergencies area. This single-center, prospective cohort study presented as a fundamental objective to identify the prognostic variables associated with survival in the short and medium term of 56 dogs with gastroenteritis treated in emergency and critical care hospital. Physiological and laboratory datas were collected on admission of emergency patients ( T0 ) and 24 hours later ( T24 ). Thus, the relationship between these parameters and the survival or mortality in 24 hours, and at 7, 30 and 60 days after admission were found. With the results, decision trees used in the stratification, prediction and identification of all possible interactions were created. The severity of the clinical, laboratory findings and historical background predicts mortality in canine patients with gastroenteritis , and patients diagnosed with parvovirus or hemorrhagic gastroenteritis, ranked in severe sepsis or septic shock, have higher mortality both at 24 hours as at 7, 30 and 60 days after treatment. The fall of potential oxygen transport, the oncotic potential and metabolic changes at the cellular level were determining the prognosis of patients, respectively represented by the high prognostic power of variations within 24 hours of hematocrit, total protein and lactate as well as presence of severe peripheral vasoconstriction 24 hours after initiation of treatment, as demonstrated by scores greater vasoconstriction. Thus, it is intended with this study, getting familiar to veterinarians to predict survival in dogs with gastroenteritis based on simple parameters, low cost and easy implementation
Doutor
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Aldebert, Stephan Yvan. "Cinétique des lactates après transplantation cardiaque orthotopique chez l'adulte." Montpellier 1, 1998. http://www.theses.fr/1998MON11112.

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8

Lunelli, Betânia Hoss. "Produção e controle da síntese do éster de ácido acrílico através da fermentação do ácido láctico." PublishedVersion, [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266977.

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Orientador: Rubens Maciel Filho, Daniel Ibraim Pires Atala
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química
Made available in DSpace on 2018-08-17T00:26:58Z (GMT). No. of bitstreams: 1 Lunelli_BetaniaHoss_D.pdf: 4567477 bytes, checksum: 2e08cdaf01f91fc7258837d292028f9b (MD5) Previous issue date: 2010
Resumo: O contínuo desenvolvimento de processos fermentativos de baixo custo e altamente eficientes para produção de ácidos orgânicos cria novas oportunidades para produção de produtos químicos a partir de matéria-prima renovável. A combinação do baixo custo de produção de ácido láctico a partir da fermentação da cana-de-açúcar, redução da dependência do petróleo e o uso de biocatalisadores, tornam o processo de produção de acrilatos e lactatos atrativo do ponto de vista ambiental e também econômico, dependendo do processo. Novas aplicações de ácido láctico, principalmente, na produção de polímeros biodegradáveis e bioabsorvíveis (poli-ácido láctico) e solventes verdes (lactato de etila) vêm despertando interesse e tem potencial para expandir o mercado, desde que processos economicamente viáveis e eficientemente competitivos sejam desenvolvidos. Este trabalho teve como objetivo a produção de ácido láctico via processo fermentativo, seguindo com sua esterificação com etanol para obtenção de lactato de etila e posterior desidratação de lactato de etila para síntese de acrilato de etila. A fim de determinar condições ideais de processo, considerando uso de matéria-prima renovável e de baixo custo, inicialmente foi selecionada uma bactéria láctica adaptada a ambiente industrial, capaz de assimilar sacarose para produção de ácido láctico. Foram desenvolvidos planejamentos experimentais para determinação das melhores condições operacionais e também, determinada a cinética do processo de fermentação láctica, que foi usada na modelagem do processo. O ácido láctico produzido foi esterificado com etanol a partir de um processo de destilação reativa para obtenção de lactato de etila. Para finalizar o trabalho, foram avaliados caminhos alternativos para desidratação de lactato de etila para síntese de acrilato de etila
Abstract: The continuous development of fermentative processes of low cost and highly efficient to organic acids production to create new opportunities for chemical production from renewable raw materials. The combination of the low cost of lactic acid production from sugarcane fermentation, reduction oil dependence and biocatalysts use, make the production of acrylates and lactates attractive of the viewpoint environmental and also economic, depending on the process. New application of lactic acid, mainly in the production of biodegradable polymer (polylactic acid) and green solvents (ethyl lactate) have attracted interest and has potential to expand the market since economically viable and competitive effectively processes are developed. The aim of this study was the lactic acid production by fermentation, following with its esterification with ethanol to obtain ethyl lactate and subsequent dehydration to the ethyl acrylate synthesis. In order to determine the process ideal conditions, considering the use of renewable raw materials and low cost, initially was selected a lactic acid bacteria adapted to an industrial environment, able to ferment sucrose to lactic acid production. Were developed experimental design for determining the best operating conditions and to determine the kinetics of lactic fermentation which was used in the fermentative process modeling. Lactic acid produced was esterified with etanol from a reactive distillation process for obtaining ethyl lactate. To conclude the work, were evaluated alternative pathways for ethyl lactate dehydration to the ethyl acrylate synthesis
Doutorado
Desenvolvimento de Processos Químicos
Doutor em Engenharia Química
9

Koziris, L. Perry (Lymperis Perry). "Blood lactates following intermittent and continuous cycling tests of anaerobic capacity." Electronic Thesis or Diss., McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60051.

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The purpose of this study was to compare the concentration of and the time to peak blood lactate following three 90-s cycle ergometer tests--intermittent all-out (Int-A), continuous all-out (Cont-A), and continuous constant (Cont-C), and to compare group peak lactate to blood lactate at individual peak time. Eight fingertip blood samples were drawn between 1 and 12min post-exercise. Subjects were university hockey players (n = 19) and physical education students (n = 19). The two all-out tests had a higher peak concentration than the Cont-C test (P $<$ 0.05). The Int-A test had an earlier peak than the two continuous tests (P $<$ 0.05) but this difference vanished if peak time was measured from the onset of the tests. A number of sampling times had lactate concentrations similar to the individual peak concentration (P $<$ 0.05): (1) 1, 2, 3, and 4min for Int-A; (2) 2, 3, 4, 5, and 6min for Cont-A; (3) 2 and 4min for Cont-C.
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Macrae, Holden Steve-Henry. "The effects of endurance training on lactate production and removal during progressive exercise in man." Doctoral Thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/27147.

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It is a well-documented finding that blood lactate concentrations at any given absolute or relative (% of maximum oxygen uptake; % VO₂ₘₐₓ) workload, are lower following endurance training. The search for the mechanisms responsible for lower blood lactate concentrations after training, however, has led to conflicting results, particularly when the possible causes of this finding have been investigated in humans. In this study, three questions related to the effects of endurance training on lactate metabolism were investigated.

Книги з теми "Lactates":

1

Wender, Regina. Astrocytic glycogen influences axon function and survival during glucose deprivation in central white matter. [Baltimore, MD]: Society for Neuroscience, 2000.

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2

Ogliaruso, Michael A. Synthesis of lactones and lactams. Chichester: Wiley, 1993.

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3

Janssen, Peter G. J. M. Lactate threshold training. Champaign, IL: Human Kinetics, 2001.

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4

Janssen, Peter. Training lactate pulse rate. Oulu, Finland: Polar Electro Oy, 1989.

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5

Ruiz, Ricardo. Estación lactante. Torrejón de la Calzada: Devenir, 2006.

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6

Bonani, Giampaolo. Maria lactans. Roma: Edizioni Marianum, 1995.

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7

Bonani, Gian Paolo. Maria lactans. Roma: Edizioni Marianum, 1995.

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8

Banik, Bimal K., ed. Beta-Lactams. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55621-5.

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9

Langener, Lucia. Isis lactans-- Maria lactans: Untersuchungen zur koptischen Ikonographie. Altenberge: Oros Verlag, 1996.

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10

Boswell, Sophie. Comprendiendo a tu bebé. Barcelona: Paidós, 2007.

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Частини книг з теми "Lactates":

1

Idler, Christine, Joachim Venus, and Birgit Kamm. "Microorganisms for the Production of Lactic Acid and Organic Lactates." In Microorganisms in Biorefineries, 225–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-45209-7_9.

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2

Bährle-Rapp, Marina. "lactate." In Springer Lexikon Kosmetik und Körperpflege, 308. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_5749.

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Castro, Ricardo, David Carpio, and Glenn Hernández. "Lactate." In Hemodynamic Monitoring, 191–201. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-69269-2_17.

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4

Poblete, Glenn Hernández, Maarten W. Nijsten, and Jan Bakker. "Lactate." In Monitoring Tissue Perfusion in Shock, 131–42. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-43130-7_9.

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Levraut, J., F. Lemoël, and T. Leplatois. "Le lactate." In Les biomarqueurs en médecine d’urgence, 171–77. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-8178-0297-8_22.

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Gooch, Jan W. "Amyl Lactate." In Encyclopedic Dictionary of Polymers, 37. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_597.

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Gooch, Jan W. "Ethyl Lactate." In Encyclopedic Dictionary of Polymers, 283. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_4617.

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Bährle-Rapp, Marina. "Stearyl Lactate." In Springer Lexikon Kosmetik und Körperpflege, 531. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10060.

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Bährle-Rapp, Marina. "TEA-Lactate." In Springer Lexikon Kosmetik und Körperpflege, 547. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10371.

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Bährle-Rapp, Marina. "Ethyl Lactate." In Springer Lexikon Kosmetik und Körperpflege, 193. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_3771.

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Тези доповідей конференцій з теми "Lactates":

1

Bartůněk, Vilém, David Sedmidubský, Tomáš Hlásek, Jan Pinc, and Ondřej Jankovský. "Thermal decomposition of lactates: Towards ultrafine nanostrucured oxides." In THERMOPHYSICS 2018: 23rd International Meeting of Thermophysics 2018. Author(s), 2018. http://dx.doi.org/10.1063/1.5047598.

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2

Karam, O., P. Klee, and P. C. Rimensberger. "Association Between Lactates, Blood Glucose, and Oxygen Extraction in Critically Ill Children After Cardiopulmonary Bypass." In American Thoracic Society 2020 International Conference, May 15-20, 2020 - Philadelphia, PA. American Thoracic Society, 2020. http://dx.doi.org/10.1164/ajrccm-conference.2020.201.1_meetingabstracts.a6311.

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3

Miesse, Peyton, and Gymama Slaughter. "Flexible Electrochemical Lactate Biosensor." In 2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS). IEEE, 2020. http://dx.doi.org/10.1109/nems50311.2020.9265579.

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4

Tong Jijun, Hu Jie, Huang Zhongchao, Pan Min, and Chen Yuquan. "A Novel Lactate Biosensor." In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1616391.

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5

Taertulakarn, Somchat, Adisorn Tuantranont, Pussadee Tobanluepop, and Chuchart Pintavirooj. "The preliminary study of lactate detection based on lactate dehydrogenase/nictotinamide adenine dinucleotide." In 2012 5th Biomedical Engineering International Conference (BMEiCON). IEEE, 2012. http://dx.doi.org/10.1109/bmeicon.2012.6465514.

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6

Gomes, Luiz Fernando do Nascimento, Cristiano Pereira Sena, Dryeli Gomes Barros, Sarah Raquel Da Silva Pereira, Bianca Martricia Silva De Oliveira, and Maria Helena Oliveira Maia. "A IMPORTÂNCIA DO CONHECIMENTO EM ALEITAMENTO MATERNO POR ESTUDANTES DE GRADUAÇÃO EM ENFERMAGEM – RELATO DE EXPERIÊNCIA." In I Congresso Brasileiro de Saúde Pública On-line: Uma abordagem Multiprofissional. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/2766.

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Introdução: O conhecimento teórico e prático acerca do aleitamento materno entre os estudantes de graduação em Enfermagem se faz necessário, pois os mesmos terão seus conhecimentos aprimorados sobre o assunto e se tornarão profissionais excelentes, contribuindo para um melhor atendimento da paciente lactante e consequentemente do lactente, haja vista que o aleitamento traz benefícios não somente para o recém-nascido, mas também para as mães. Objetivos: Relatar a experiência dos acadêmicos do curso de Enfermagem com o aprendizado acerca do aleitamento materno. Metodologia: Trata-se de um relato de experiência vivenciado por alunos do sexto período do curso de Enfermagem de uma instituição de ensino superior privada, sobre a importância do conhecimento em Aleitamento Materno. Resultados: Com a fundação da LAEAM – Liga Acadêmica em Aleitamento Materno na universidade, promovida pelo curso de Enfermagem, os alunos tomaram conhecimento a respeito do assunto, aprofundando-o nas competências, as técnicas, orientações e inovações a respeito do aleitamento materno e na humanização acerca do atendimento das lactantes e consequentemente dos lactentes. Com isso, foi possível observar a importância da conhecimento em aleitamento materno por esses graduandos, que levarão informações pertinentes para a comunidade e as gestantes. Conclusão: Com as orientações dos professores/enfermeiros especialistas e apoio da instituição de ensino, os alunos integrantes da liga acadêmica em aleitamento materno, conseguiram superar todos os desafios que a mesma proporcionou, promovendo encontros, rodas de conversas, seminários, palestras e evento como a I Jornada da LAEAM, bem como minicursos, para contribuir com não só com a comunidade acadêmica, mas também com a sociedade.
7

Habes, Maria, Rachel Salvador, Erica Dijkers, and R. P. Van Steenwijk. "Arterial lactate vs venous lactate as indicator of metabolic limitation during cardiopulmonary exercise testing." In ERS International Congress 2018 abstracts. European Respiratory Society, 2018. http://dx.doi.org/10.1183/13993003.congress-2018.pa1408.

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8

Murphy, S. "STORAGE OF PLATELETS FOR TRANSFUSION - CURRENT METHODS AND PROBLEMS TO BE SOLVED." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643999.

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In the 1970's, when platelet concentrates (PC) were stored in "first generation" plastic containers at 22°C, many showed a fall in pH.In vivo viability was well maintained as pH fell from the starting level, 7.1, to 6.2 but was progressively lost below thatlevel. pH after a storage interval correlated with the platelet count in the PC, the higher the count, the lower the pH after storage. Since 30-50% of PC might have pH below 6.2 after 3 days of storage, shelflife was severely limited.We now have "second generation" containers which allow storage for 7 days without significant fall in pH.Superior pH maintenance results from increased oxygen transport through the walls of the container thuspreventing platelet hypoxia within. Under all circumstances which we have examined, PC, pH correlates inversely with lactate concentration. The superiority of the "second generation" containers results from the lower rate of glycolysis within them due to the Pasteur effect. Like many cells, the platelet has a baseline rate of lactate production which is increased up to 8 times if oxidative metabolism is interrupted by hypoxia. For any container, there is an inverse relationship between PC pCL and platelet count since each platejlet |as a fixed oxygen demand. In "first generation" containers, the pO2 approached zero with platelet counts, 1.0-1.5 × 106 /mm3 , a range commonly seen in practice. At platelet counts above thatlevel, the platelets would have an increasing oxygendebt. The greater the oxygen debt is, the greater will be the rate of lactate production per platelet and, therefore, the rate of pH fall. An ideal "second generation" container will have oxygen permeability twice thgt 05 a "first generation" container such that platelets will begin to have an oxygen debt at platelet count, 2.4 × 106/mm3 , a level rarely seen in practice. In "second generation" containers, there is a continuing, linear production of lactate in spite of adequate oxygen supply. The major buffer in plasma for the hydrogen ion accompanying lactate production is bicarbonate. As lactate is produced, bicarbonate is consumed and pH remains stable until bicarbonate is completely depleted.Thereafter, pH falls precipitously.However, there is adequate bicarbonate in the 50 ml of plasma used as medium for the PC to buffer the baseline production of lactate for seven days.This is the major reason why storage for sevendays is now satisfactory.With knowledge of the oxygen transport capability of a container and measurement of pO2 within the container, we can calculate the rate of oxygen consumptionduring storage, 1.1 nmol/min/109 platelets. Knowing the rates of oxygen consumption and lactate production and the predicted rate of ATP synthesis from ADP for each type of metabolism we calculated that 85% ofATP regeneration is from oxidative metabolism. When we contrasted the rate of glucose consumption with the rate of lactate production, we were surprised that the slope of the regression line was exactly 0.5 suggesting that two moles of lactate were produced for each mole of glucose utilized and that there must be a prominent substrate for oxidative metabolism other than glucose. Recent work in our laboratory suggests fatty acid as such a substrate.There is much to be learned about storage in "secondgeneration" containers. At the onset of storage 70% of the platelets have a discoid appearance whereas after seven days only 30% do with most of the rest being spheres. Furthermore, 5-10% of cells are "leaf-shaped", elongated tubules, or ring forms. In addition, many studies have described reduced platelet function in vitro after storage. There is a 20-50% reduction in the maximal extent of aggregation with high ADP concentrations and the concentrations of single agonists which produce 50% of maximal response are increased after storage. However, we have been encouraged to find that the response to these agents was reduced much less when they were used a pairs. Finally, there is concern that trace bacterial contamination at the time of phlebotomy might allow enough proliferation to produce sepsis in recipients. Further research should improve our understanding inthese areas and the safety and efficacy of platelets after storage.
9

Serganova, Inna, Asif Rizwan, Xiaohui Ni, Sunitha Thakur, Ronald Blasberg, and Jason Koutcher. "Abstract 1003: A link between lactate dehydrogenase A, lactate and tumor phenotype identified by imaging." In Proceedings: AACR 103rd Annual Meeting 2012‐‐ Mar 31‐Apr 4, 2012; Chicago, IL. American Association for Cancer Research, 2012. http://dx.doi.org/10.1158/1538-7445.am2012-1003.

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10

Štěpánek, Pavel. "Tasting the milk of celestial knowledge. Note about the rhetoric of the portrayal of the sacred in Alonso Cano’s painting The Lactation of St. Bernard (1653–1657) from the National Gallery in Prague." In The Figurativeness of the Language of Mystical Experience. Brno: Masaryk University Press, 2021. http://dx.doi.org/10.5817/cz.muni.p210-9997-2021-20.

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Анотація:
This is an attempt of interpretation of a picture that draws from mystical tradition. It is about the comprehension of a topic in a painting by the Spanish artist Alonso Cano (1601–1667, Granada), from the National Gallery in Prague (O 14 690) Lactatio S. Bernardi – presenting the miracle of lactation, in which the Virgin Mary is squirting milk from her breast into the mouth of St. Bernard of Clairvaux (a historically very famous saint and major representative of the Cistercian Order). Traces of iconography lead up to the Coptic Church, where the typology of the milking Virgin was probably first originated (Galacto Trofusa in Greek or Maria lactans in Latin). The starting point is perhaps the portrayal of the virgin goddess Isis milking her son Horus. In many cultures, milk symbolises physical and spiritual food (e.g. the Milky Way evoking the ancient myth about spurted divine milk). On the other hand, milking is also present in the Old Testament as the image of special blessing; it is a symbol of eternal beatitude and wisdom. The dream/vision of her milk is then – apart from the rest – a sign of abundance, fertility, love, and fullness. The lactation of St. Bernard is an allegory of the penetration of the divine science in the soul. Thanks to this act the saint receives God’s guide, which he can then discharge into his writings.

Звіти організацій з теми "Lactates":

1

Mosher, Jennifer J., Meghan M. Drake, Susan L. Carroll, Zamin K. Yang, Christopher W. Schadt, Stephen D. Brown, Mircea Podar, et al. Microbial Community Dynamics of Lactate Enriched Hanford Groundwaters. Office of Scientific and Technical Information (OSTI), May 2010. http://dx.doi.org/10.2172/986244.

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2

Meyer, Birte, and David Stahl. Syntrophic Degradation of Lactate in Methanogenic Co-cultures. Office of Scientific and Technical Information (OSTI), May 2010. http://dx.doi.org/10.2172/986317.

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3

Ma, Lianjia. Multichannel Simultaneous Determination of Activities of Lactate Dehydrogenase. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/764689.

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4

Piper, Robert C. Parasite Lactate Dehydrogenase for Diagnosis of Plasmodium Falciparum. Phase II. Fort Belvoir, VA: Defense Technical Information Center, April 1997. http://dx.doi.org/10.21236/adb230017.

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Kim, Yuan, Edward M. Steadham, Steven M. Lonergan, and Elisabeth J. Huff-Lonergan. Antioxidant Capacity of Calcium Lactate on m-Calpain Activity In Vitro. Ames (Iowa): Iowa State University, January 2009. http://dx.doi.org/10.31274/ans_air-180814-1237.

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Reeves, John T. Beta-Adrenergic Blockade and Lactate Metabolism during Exercise at High Altitude. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada263544.

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Li, Fenglei. Automated High Throughput Protein Crystallization Screening at Nanoliter Scale and Protein Structural Study on Lactate Dehydrogenase. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/892735.

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Qian, Chengliang. Structurally Integrated Photoluminescence-Based Lactate Sensor Using Organic Light Emitting Devices (OLEDs) as the Light Source. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/892736.

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Li, Zhizhuo, Chengxin Li, guangxue Wang, Tengqi Li, Xiaoyu Fan, Xin Xu, Peixu Wang, and Wei Sun. Diagnostic accuracy of synovial fluid D-lactate for periprosthetic joint infection: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, September 2021. http://dx.doi.org/10.37766/inplasy2021.9.0036.

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Thakur, Sunitha B. Noninvasive Detection of Lactate as a Biomarker of Response Using Spectral-Selective Multiple Quantum Editing Sequence (SS-SelMQC). Fort Belvoir, VA: Defense Technical Information Center, May 2010. http://dx.doi.org/10.21236/ada534912.

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