نتایج جستجو برای: thermodynamic changes
تعداد نتایج: 910263 فیلتر نتایج به سال:
Discussion: A large part of both clinical and subclinical lesions found in our daily work are benign and correspond with fibrocystic changes (FCC). This entity is complex and part exhibit traits that define characteristically in MRI and diagnose correctly, but there is another small group of changes that can take the image aspect of cancer. From a complex case, we review the main aspects of the...
Original scientific paper The paper presents the possibility of electricity generation at the pressure reduction stations (PRS) in the conventional system of natural gas transmission and distribution. The main deficiency of the conventional system is its thermodynamic irreversibility, i.e. the loss of potential work that could be generated while reducing the gas pressure. Within the first part ...
This article reviews thermodynamic relationships in the brain in an attempt to consolidate current research in systems neuroscience. The present synthesis supports proposals that thermodynamic information in the brain can be quantified to an appreciable degree of objectivity, that many qualitative properties of information in systems of the brain can be inferred by observing changes in thermody...
Trip distribution is a very important step in transportation modeling context. Many decent researches have been dedicated to the importance of the models for this third step of transportation modeling. Entropy maximization model is one of thermodynamic models and is implemented in modeling various scientific Phenomenons. As the name implies, entropy maximization model tries to find the maximu...
The mechanisms of changes in the large scale hydrological cycle projected by 15 models participating in the Coupled Model Intercomparison Project 3 and used for the Intergovernmental Panel on Climate Change Assessment Report Four are analyzed by computing differences between 2046-65 and 1961-2000. The contributions to changes in precipitation minus evaporation, P − E, caused thermodynamically b...
attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...
conclusions the study results showed that by increasing the initial dye concentration and contact time, the adsorption capacity increased, as well. moreover, the thermodynamic parameters (δh °, δg °, and δs °) revealed the endothermic sorption of rr-198 onto mwcnts. results the rr-198 absorption rates were 33.26 and 222.88 mg/g, respectively for 20, and 200 mg/l dye concentration, at ph of 3, 6...
Understanding sorption isotherms is crucial in food science for optimizing the drying processes, enhancing shelf-life of food, and maintaining quality during storage. This study investigated sweet cherry powder (SCP) using static gravimetric method. The experimental water curves lyophilized were determined at 30°C, 40°C, 50°C. then fitted to six isotherm models: Modified GAB, Halsey, Smith, Osw...
A mono- and a bi-functional dithiocarbamates as sodium salts were obtained by treating p-peridine or p-perazine in aceton-water mixture with CS2 in the presence of NaOH. These anionic water soluble compounds have been characterized by elemental analysis, IR and 1H NMR spectroscopic studies. Both compounds (p-peridine (I) and p-perazine-bis dithiocarbam...
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