نتایج جستجو برای: 40 and 60 min

تعداد نتایج: 16912156  

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Ultrasonic disintegration is a pretreatment process before stabilization and dewatering that degrades sludge and changes its physical and chemical characteristics. The aim of this study was to investigate the effectiveness of ultrasonic in enhancing hydrolyses, stabilization and dewatering of municipal raw activated sludge. Materials and Methods:  The samples were tak...

Journal: :Journal of Food Processing and Preservation 2022

Kinnow mandarin (Citrus reticulata) peel, an agricultural solid waste of the juice processing industry, was studied to understand mass transfer kinetics during osmotic dehydration and its process optimization. The experiments were conducted in sucrose (40, 50, 60° Brix) at different temperatures 40, 60°C duration 0–240 min. Central Composite Design used for optimization with variables, such as ...

Journal: :British journal of anaesthesia 2001
D J Marlin L E Young R McMurphy K Walsh P Dixon

There is evidence that halothane inhibits nitric oxide synthase in vitro, but the effect of intravenous anaesthetic agents is less clear. This study was undertaken to compare the rate of exhaled nitric oxide production (VNO) in spontaneously breathing horses anaesthetized with halothane or an intravenous regimen. Seven adult horses were studied twice in random order. After premedication with ro...

Journal: :American journal of physiology. Heart and circulatory physiology 2015
Clark T Holdsworth Steven W Copp Scott K Ferguson Gabrielle E Sims David C Poole Timothy I Musch

The ATP-sensitive K(+) (KATP) channel is part of a class of inward rectifier K(+) channels that can link local O2 availability to vasomotor tone across exercise-induced metabolic transients. The present investigation tested the hypothesis that if KATP channels are crucial to exercise hyperemia, then inhibition via glibenclamide (GLI) would lower hindlimb skeletal muscle blood flow (BF) and vasc...

Journal: :International Journal of Environmental Research and Public Health 2020

2017
V S Carrara L C Filho V A S Garcia V S Faiões E F Cunha-Júnior E C Torres-Santos D A G Cortez

Supercritical fluid extraction was used to extract the alkaloid N-[7-(3',4'-methylenedioxyphenyl)-2(Z),4(Z)-heptadienoyl]pyrrolidine from leaves of Piper amalago L. A three-level orthogonal array design matrix, OAD OA9(34), was used for optimization of the parameters of supercritical extraction of the alkaloid, employing supercritical carbon dioxide: extraction time (20, 40, and 60 min), temper...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده علوم پایه 1388

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...

Today the use of pretreatment operations to reduce time, energy and cost of drying of agricultural products and foodstuffs are taken into consideration. In this study the Rosemary herb dried by using the microwave pre-treatment at three treatments (90 W for 5 min, 180 W for 2.5 min and 360 W for 1.5 min) and control treatment (without pre-treatment) in a hot air dryer at temperatures of 40, 50 ...

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