63 research outputs found

    Resistance exercise protects mice from protein-induced fat accretion

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    Low-protein (LP) diets extend the lifespan of diverse species and are associated with improved metabolic health in both rodents and humans. Paradoxically, many athletes and bodybuilders consume high-protein (HP) diets and protein supplements, yet are both fit and metabolically healthy. Here, we examine this paradox using weight pulling, a validated progressive resistance exercise training regimen, in mice fed either an LP diet or an isocaloric HP diet. We find that despite having lower food consumption than the LP group, HP-fed mice gain significantly more fat mass than LP-fed mice when not exercising, while weight pulling protected HP-fed mice from this excess fat accretion. The HP diet augmented exercise-induced hypertrophy of the forearm flexor complex, and weight pulling ability increased more rapidly in the exercised HP-fed mice. Surprisingly, exercise did not protect from HP-induced changes in glycemic control. Our results confirm that HP diets can augment muscle hypertrophy and accelerate strength gain induced by resistance exercise without negative effects on fat mass, and also demonstrate that LP diets may be advantageous in the sedentary. Our results highlight the need to consider both dietary composition and activity, not simply calories, when taking a precision nutrition approach to health

    Π‘leaning gas emissions from CO[2] through trifluoroacetic acid in oil and gas production

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    ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ‹ выбросов Π² атмосфСру диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° Π² настоящСС врСмя Π½Π΅ подвСргаСтся сомнСнию. ΠšΡ€ΡƒΠΏΠ½Ρ‹ΠΌΠΈ источниками выбросов Π² атмосфСру диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Ρ‹ Π³ΠΎΡ€Π½ΠΎΠΉ ΠΈ Π½Π΅Ρ„Ρ‚Π΅Π³Π°Π·ΠΎΠ²ΠΎΠΉ ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ. Одной ΠΈΠ· особСнностСй диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° являСтся Π΅Π³ΠΎ химичСски устойчивая ΠΌΠΎΠ»Π΅ΠΊΡƒΠ»Π°, которая ΠΌΠΎΠΆΠ΅Ρ‚ ΡΠΎΡ…Ρ€Π°Π½ΡΡ‚ΡŒΡΡ Π² Π½Π΅ΠΈΠ·ΠΌΠ΅Π½Π½ΠΎΠΌ Π²ΠΈΠ΄Π΅ Π² атмосфСрС Π΄Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ΅ врСмя. НаиболСС Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹ΠΌ Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ΠΌ ΡƒΡ‚ΠΈΠ»ΠΈΠ·Π°Ρ†ΠΈΠΈ диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° ΠΈΠ· ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² горСния ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ² являСтся Π΅Π³ΠΎ ΠΏΠΎΠ³Π»ΠΎΡ‰Π΅Π½ΠΈΠ΅ с ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½ΠΈΠ΅ΠΌ Π½ΠΎΠ²Ρ‹Ρ… ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ², ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠ³ΡƒΡ‚ Π½Π°ΠΉΡ‚ΠΈ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π² химичСской ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ. ΠžΡΠ½ΠΎΠ²Π½Ρ‹ΠΌΠΈ нСдостатками ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… Π½Π° сСгодняшний дСнь способов удалСния диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° ΡΠ²Π»ΡΡŽΡ‚ΡΡ нСвысокая конвСрсия ΠΎΡ‡ΠΈΡ‰Π°Π΅ΠΌΡ‹Ρ… Π³Π°Π·ΠΎΠ², высокая ΡΡ‚ΠΎΠΈΠΌΠΎΡΡ‚ΡŒ провСдСния процСсса, Π° Ρ‚Π°ΠΊΠΆΠ΅ Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅ΠΌΠΎΡΡ‚ΡŒ процСсса ΠΏΡ€ΠΈ Π±ΠΎΠ»ΡŒΡˆΠΈΡ… количСствах ΠΎΡ‡ΠΈΡ‰Π°Π΅ΠΌΡ‹Ρ… Π³Π°Π·ΠΎΠ² Π² отходящих. ЦСль: ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² каталитичСского улавливания БО[2] ΠΈΠ· отходящих Π³Π°Π·ΠΎΠ² Π³ΠΎΡ€Π½ΠΎΠΉ ΠΈ Π½Π΅Ρ„Ρ‚Π΅Π³Π°Π·ΠΎΠ²ΠΎΠΉ ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ Π² растворах трифторуксусной кислоты. ΠžΠ±ΡŠΠ΅ΠΊΡ‚Ρ‹: диоксид ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π°, растворы трифторуксусной кислоты Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠΉ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ, концСнтрированная трифторуксусная кислота. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠžΡ‡ΠΈΡΡ‚ΠΊΠ° ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² горСния ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ² ΠΎΡ‚ CO[2] ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»Π°ΡΡŒ ΠΏΡƒΡ‚Π΅ΠΌ пропускания Π΅Π³ΠΎ Ρ‡Π΅Ρ€Π΅Π· раствор трифторуксусной кислоты, отработанная кислота Ρ€Π΅Π³Π΅Π½Π΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π»Π°ΡΡŒ кислородом Π²ΠΎΠ·Π΄ΡƒΡ…Π°. ИсслСдовались абсорбционныС способности растворов трифторуксусной кислоты Π² зависимости ΠΎΡ‚ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ растворов ΠΈ значСния pH. ΠΠ±ΡΠΎΡ€Π±Ρ†ΠΈΡŽ CO[2] Π² растворах трифторуксусной кислоты опрСдСляли ΠΏΡ€ΠΈ стандартных условиях. ΠΠ΅ΠΏΠΎΠ³Π»ΠΎΡ‚ΠΈΠ²ΡˆΠΈΠΉΡΡ CO[2] абсорбировали раствором Ρ‰Π΅Π»ΠΎΡ‡ΠΈ, ΠΊΠΈΡΠ»ΠΎΡ‚Π½ΠΎΡΡ‚ΡŒ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ постоянно фиксировали ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠΎΠΌΠ΅Ρ‚Ρ€ΠΎΠΌ. ΠšΠΎΠ»ΠΈΡ‡Π΅ΡΡ‚Π²ΠΎ абсорбированного диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° опрСдСляли потСнциомСтричСским Ρ‚ΠΈΡ‚Ρ€ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ содСрТимого Π»ΠΎΠ²ΡƒΡˆΠΊΠΈ. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Показано, Ρ‡Ρ‚ΠΎ каталитичСская очистка Π΄Ρ‹ΠΌΠΎΠ²Ρ‹Ρ… Π³Π°Π·ΠΎΠ² ΠΎΡ‚ CO[2] ΠΏΡ€ΠΈ использовании растворов трифторуксусной кислоты ΠΏΡ€ΠΎΡ‚Π΅ΠΊΠ°Π΅Ρ‚ ΠΏΡ€ΠΈ стандартных условиях с ΠΏΠΎΠ»Π½Ρ‹ΠΌ ΡƒΠ»Π°Π²Π»ΠΈΠ²Π°Π½ΠΈΠ΅ΠΌ диоксида ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π°.The relevance of the problem of carbon dioxide emissions into the atmosphere is not currently in doubt. Mining and oil and gas facilities are a major source of carbon dioxide emissions. One of the features of carbon dioxide is its chemically stable molecule, which can remain unchanged in the atmosphere for a considerable amount of time. The most rational solution for carbon dioxide utilization from the products of combustion of hydrocarbons is its absorption with the receipt of new products that may find application in chemical industry. The main disadvantages of the carbon dioxide removal methods available today are the low conversion of the cleaned gases, the significant cost of the process, and the feasibility of the process with large amounts of cleaned gases in the exhaust. The aim of the research is to determine the optimal parameters of catalytic CO[2] capture from the exhaust gases of the mining and oil and gas industries in trifluoroacetic acid solutions. The objects of research are carbon dioxide, trifluoroacetic acid solutions of various concentrations, concentrated trifluoroacetic acid. Methods. Purification of combustion products of hydrocarbons from CO[2] was carried out by passing it through a solution of trifluoroacetic acid, the spent acid was regenerated with air oxygen. The absorption capacities of trifluoroacetic acid solutions were investigated depending on the concentrations of the solutions and the pH value. CO[2] absorption in trifluoroacetic acid solutions was determined under standard conditions. Unabsorbed CO[2] was absorbed with a solution of alkali, the acidity of which was constantly fixed with a potentiometer. The amount of carbon dioxide absorbed was determined by potentiometric titration of the trap. Results. The paper shows that catalytic purification of flue gases from CO[2] when using trifluoroacetic acid solutions proceeds under standard conditions with complete trapping of carbon dioxide. Key words: Ecology, industrial gases, catalytic removal of CO[2], trifluoroacetic acid, catalys
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