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... Search: the chinese kitchen is valuable , chemical engineering process simulation journals , reverse osmosis mass balance , ...

Page - chemeng - 08/25/2008 - 09:38 - 0 comments - 0 attachments

What is Design Process?

The design process is one of the most exciting and complex fields within chemical engineering, and is the heart of the development of engineering ... two steps are performed by process engineers - mostly chemical engineers - while the latter is performed by a team of mechanical ...

Story - puput - 10/17/2011 - 07:52 - 0 comments - 0 attachments

XLVIII XVI National Convention and International Exposition & Process Engineering

Founded in 1958 with the aim of promoting the study of chemical engineering, to contribute to the Development of Chemical Industry and advocating to maintain high professional standards ... XVI National Convention and International Exposition & Process Engineering) ...

Story - antoq - 10/07/2011 - 07:47 - 0 comments - 0 attachments

Chemical Engineering - Definition

What is Chemical Engineering? In general, chemical engineering is the application of science, particularly chemistry, physics, biology and mathematics, the process of converting raw materials or chemicals into more useful, usable or ...

Story - puput - 10/14/2011 - 03:32 - 0 comments - 0 attachments

Virtual Sensors: A Revolution in Control Engineering

Any process that must be monitored sensors required to know the variables of a ... sensor. Virtual sensors have found wide scope in chemical engineering. Mainly in the operation of chemical reactors where monitoring is commonly required for various chemical ...

Story - puput - 10/14/2011 - 03:57 - 0 comments - 0 attachments

How do you define a Chemical Engineer in Food?

The Chemical Engineer specializing in food in a professional able to participate as innovators in the various activities of the Chemical Industry, capable of creating new processes and products as well as ... society. Manage, optimize and monitor the transformation process. This is one of its main features: Recognize the need in the ...

Story - puput - 10/15/2011 - 08:01 - 0 comments - 0 attachments

New generation of microprocessors, parallel processing

The numerical calculation is a fundamental tool of chemical engineering as well as in many other sciences. An example of this is the simulation programs and process optimization. When the number of variables and equations to solve is ...

Story - puput - 10/14/2011 - 03:34 - 0 comments - 0 attachments

More transport phenomena

All Chemical Engineer knows what is the transfer of momentum (momentum), heat and ... related in electrochemical systems. Much like when the chemical reaction rate can be determined by the time it takes to reach the ... studied in steady state and not during the transfer process or mechanics, momentum transfer angular. In conclusion, a unifying ...

Story - puput - 10/14/2011 - 03:50 - 0 comments - 0 attachments

Pasteurized Milk and Ultra Pasteurized

... product obtained by subjecting the raw milk to a thermal process temperature and time, to ensure the total destruction of pathogenic ... of the product, minimizing the possibility of subsequent chemical transformations and physical properties of food. The valid time for ...

Story - antoq - 10/05/2011 - 05:40 - 0 comments - 0 attachments

Solar Production of Cement

... the following results: 1) Degree of calcination: 85%, 2) chemical conversion yield: 15%, 3) overall process efficiency: 88%. However, a preliminary economic study conducted ...

Story - antoq - 10/04/2011 - 04:23 - 0 comments - 0 attachments

Regeneration of naphthenic acids

a. Caustic treatment .- In this stage the naphthenic acid is chemically trapped in the form of sodium naphthenates using a caustic soda solution in the treatment of kerosene from the primary distillation unit. Experience has shown that sodas should be used 3-5 ° Be at this stage, because high concentration solutions have the disadvantage of promoting the solubility of oil in the sodium naphthenate with a consequent decline in their quality and high losses oil.

b. Regeneration of naphthenic acids from Spent Soda .- This second step is to acidify the solution of spent sulfuric acid soda and collect the top (naphthenic) after separation into two phases. Before acidification is required to remove the oil washed with soda worn to reduce its content in the recovered naphthenic. During the stage of acidification of the spent soda aqueous solution agitation is required, which is done using air.


a. Caustic treatment .- In this stage the naphthenic acid is chemically trapped in the form of sodium naphthenates using a caustic soda solution in the treatment of kerosene from the primary distillation unit. Experience has shown that sodas should be used 3-5 ° Be at this stage, because high concentration solutions have the disadvantage of promoting the solubility of oil in the sodium naphthenate with a consequent decline in their quality and high losses oil.

b. Regeneration of naphthenic acids from Spent Soda .- This second step is to acidify the solution of spent sulfuric acid soda and collect the top (naphthenic) after separation into two phases. Before acidification is required to remove the oil washed with soda worn to reduce its content in the recovered naphthenic. During the stage of acidification of the spent soda aqueous solution agitation is required, which is done using air.

AIR QUALITY STUDIES IN SEVERAL CITIES IN ECUADOR, LOJA PRESENTED AT

With the presence of 200 participants in the First National Congress of Chemical Engineering Students, on Wednesday during a day full of important conferences and the presence of renowned experts in the areas of Energy, Environment and Technology. Mr. Andrés de la Rosa, Central University of Ecuador, presented the conference: "Studies of air quality in several cities of Ecuador."

With the presence of 200 participants in the First National Congress of Chemical Engineering Students, on Wednesday during a day full of important conferences and the presence of renowned experts in the areas of Energy, Environment and Technology. Mr. Andrés de la Rosa, Central University of Ecuador, presented the conference: "Studies of air quality in several cities of Ecuador."


With the presence of 200 participants in the First National Congress of Chemical Engineering Students, on Wednesday during a day full of important conferences and the presence of renowned experts in the areas of Energy, Environment and Technology. Mr. Andrés de la Rosa, Central University of Ecuador, presented the conference: "Studies of air quality in several cities of Ecuador."

With the presence of 200 participants in the First National Congress of Chemical Engineering Students, on Wednesday during a day full of important conferences and the presence of renowned experts in the areas of Energy, Environment and Technology. Mr. Andrés de la Rosa, Central University of Ecuador, presented the conference: "Studies of air quality in several cities of Ecuador."

New data on the role of immunological synapses in the response of the body against infections

A study by the Consejo Superior de Investigaciones Científicas (CSIC) provides new data on the activation of T lymphocytes, a type of white blood cells whose function is crucial for starting the body's immune response against pathogens. The investigation, which is published in the journal Nature Inmunology, reveals a new function of the immunological synapse in this activation process and confirms its importance in the articulation of the immune response.

The activation of T lymphocytes occurs in lymph nodes, regions throughout the human body, which is similar to the meeting points at airports or stations. They bet on other immune system cells of the human body, such as dendritic cells, which have previously engulfed microorganisms in the infection zone, then migrate to the lymph nodes and present antigens to T lymphocytes Through the lymph nodes, T lymphocytes continuously pass feel that dendritic cells to membrane receptors that recognize a TCR specific antigen, which comes from the area of infection, and is exposed on the dendritic cell. When this happens, the cell stops and form immunological synapse with a dendritic cell. This is a complex subcellular structure, formed in the area of interaction between T cells and dendritic cells, which keeps the two cells produced during cell activation. When it happens, the T cells proliferate and leave nodes to participate in the immune response.


A study by the Consejo Superior de Investigaciones Científicas (CSIC) provides new data on the activation of T lymphocytes, a type of white blood cells whose function is crucial for starting the body's immune response against pathogens. The investigation, which is published in the journal Nature Inmunology, reveals a new function of the immunological synapse in this activation process and confirms its importance in the articulation of the immune response.

The activation of T lymphocytes occurs in lymph nodes, regions throughout the human body, which is similar to the meeting points at airports or stations. They bet on other immune system cells of the human body, such as dendritic cells, which have previously engulfed microorganisms in the infection zone, then migrate to the lymph nodes and present antigens to T lymphocytes Through the lymph nodes, T lymphocytes continuously pass feel that dendritic cells to membrane receptors that recognize a TCR specific antigen, which comes from the area of infection, and is exposed on the dendritic cell. When this happens, the cell stops and form immunological synapse with a dendritic cell. This is a complex subcellular structure, formed in the area of interaction between T cells and dendritic cells, which keeps the two cells produced during cell activation. When it happens, the T cells proliferate and leave nodes to participate in the immune response.

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