Recent Changes

Thursday, September 8

  1. msg Nice discription message posted Nice discription Krishna
    Nice discription
    Krishna
    5:22 am

Tuesday, April 5

  1. msg Cryogenic Oxygen Plant for Cryogenic Surgery Hospitals & Industry message posted Cryogenic Oxygen Plant for Cryogenic Surgery Hospitals & Industry Cryogenic surgery is also called cryotherepy. In this process doctors destroy human cells and tissu…
    Cryogenic Oxygen Plant for Cryogenic Surgery Hospitals & Industry
    Cryogenic surgery is also called cryotherepy. In this process doctors destroy human cells and tissue by freezing cells using very cold cryogenic product like liquid oxygen or liquid nitrogen. In hospitals, external tumors patient are treated with cryo surgery and skin cells are damaged with extremely cold that are produced by cryogenic liquid. These hospitals require cryogenic liquid on regular basis for treating their patient. I personally suggest Hospitals to cryogenic oxygen liquid generating plant for producing highly pure output. Cryogenic oxygen plant is automatic machinery that doesn’t require lot of technical knowledge and very ease to maintain. For quick reference click here- http://www.cryogenicoxygenplant.net/
    2:03 am

Thursday, January 15

  1. page Fundamentals of Stack Gas Dispersion edited ... The book also includes a good many step-by-step, detailed example calculations. Where the boo…
    ...
    The book also includes a good many step-by-step, detailed example calculations.
    Where the book is used
    ...
    more than 835880 times in
    ...
    available in 232233 libraries worldwide.[2]
    ...
    Internet Archive, citeulike and citeulike.ResearchGate..
    Book reviews
    Excerpts from some published reviews of this book:
    (view changes)
    11:31 am
  2. page ChE Home edited ... My primary expertise was in the process design of petroleum refineries, petrochemical plants, …
    ...
    My primary expertise was in the process design of petroleum refineries, petrochemical plants, and natural gas processing plants. For the last 12 years or so of my consulting work, my primary focus was the environmental aspects of the hydrocarbon processing industry. My clients included almost every major oil company in the United States as well as most of the major environmental consulting firms.
    I am a long-time Fellow member of the American Institute of Chemical Engineering (AIChE) and a graduate of Texas A & M University. I have published a good many engineering articles in technical magazines and journals. I have also published two textbooks, namely:
    ...
    educational resource more than 880 times
    Aqueous Wastes From Petroleum and Petrochemical Plants : This book was published in 1967 and is now out of print. However, copies are available in most large university libraries.
    About this wiki
    (view changes)
    11:18 am

Sunday, January 11

  1. page ChE Home edited ... My primary expertise was in the process design of petroleum refineries, petrochemical plants, …
    ...
    My primary expertise was in the process design of petroleum refineries, petrochemical plants, and natural gas processing plants. For the last 12 years or so of my consulting work, my primary focus was the environmental aspects of the hydrocarbon processing industry. My clients included almost every major oil company in the United States as well as most of the major environmental consulting firms.
    I am a long-time Fellow member of the American Institute of Chemical Engineering (AIChE) and a graduate of Texas A & M University. I have published a good many engineering articles in technical magazines and journals. I have also published two textbooks, namely:
    ...
    educational resource more than 875880 times in
    Aqueous Wastes From Petroleum and Petrochemical Plants : This book was published in 1967 and is now out of print. However, copies are available in most large university libraries.
    About this wiki
    (view changes)
    10:21 am

Thursday, January 8

  1. page Acid rain edited ... {AcidRainFormation.png} How acid rain is formed in the atmosphereThe combustion of fossil fuel…
    ...
    {AcidRainFormation.png} How acid rain is formed in the atmosphereThe combustion of fossil fuels in power plants and other industrial plants produces combustion flue gases, containing acid-forming precursors such as sulfur dioxide and nitrogen oxides, that are emitted to the atmosphere. The combustion of hydrocarbon fuels in the engines of automotive vehicles, aircraft, trains and ships also produce exhaust emissions of acid-forming precursors such as nitrogen oxides and, in some cases, sulfur dioxide. In addition to those anthropogenic (man-made) sources, natural sources such as trees, forest fires, volcanoes, and geysers also emit acid-forming nitrogen oxides.
    Those acid-forming precursors, sulfur dioxide and nitrogen oxides, are converted in the atmosphere by a complex series of reactions, into sulfuric acid and nitric acid. The adjacent diagram depicts the emission of acid-forming precursors into the atmosphere and their conversion into sulfuric and nitric acid as well as their subsequent wet and dry deposition.The emission of acid-forming precursors by natural sources led to the inference that precipitation in the pre-industrial atmosphere of forested regions had a pH of about 5.0 due only to the formation of carbonic acid from the CO2 in the atmosphere as per this reaction:
    ...
    carbon dioxide ─> carbonic acid
    ...
    + CO2 ─> H2CO3
    If that inference is true, then modern precipitation in the northeastern United States, with a pH ranging from about 4.5 to about 4.7 (see the above pH map), is two to three times more acidic than in pre-industrial times.
    Effects of acid rain on surface water acidity
    (view changes)
    1:55 pm
  2. page Acid rain edited ... Effects on aquatic organisms {AquaticSpecies2-pH.png} ... been de- monstrated in labo…
    ...
    Effects on aquatic organisms
    {AquaticSpecies2-pH.png}
    ...
    been de-
    monstrated in laboratory whole ecosystem acidification experiments and in field surveys. A number of species, especially of fish and macro-invertebrates, that commonly occur in surface waters cannot survive, reproduce or compete in acidic waters. Sensitive species may be lost even at moderate levels of acidity. As shown in the adjacent diagram depicting the pH tolerance of various aquatic life species, frogs have a high tolerance to increasing acidity (lower pH) and snails have a low tolerance to increasing acidity.
    Decreases in pH and elevated concentrations of aluminum have reduced the species diversity and abundance of aquatic life in many streams and lakes of the northeastern United States. Fish have received most of the attention to date, but entire food chains are often adversely affected. In the Adirondacks, a significant positive relationship exists between the pH of lakes and the number of fish species present in those lakes. Surveys of 1,469 Adirondack lakes conducted in 1984 and 1987 show that 24 percent of lakes in this region do not support fish. These lakes had consistently lower pH and higher concentrations of aluminum than lakes that contained one or more species of fish. Even acid-tolerant fish species such as brook trout have been eliminated from some waters in the northeastern United States.
    (view changes)
    1:46 pm
  3. page Acid rain edited ... Biological effects of acid rain Effects on aquatic organisms {AquaticSpecies-pH.png} The pH…
    ...
    Biological effects of acid rain
    Effects on aquatic organisms
    {AquaticSpecies-pH.png} The pH tolerance of various aquatic species. Light blue areas indicate the pH levels which cannot be tolerated by the various species.The{AquaticSpecies2-pH.png}
    The
    biological effects
    ...
    have been demonstratedde-
    monstrated
    in laboratory whole-ecosystemwhole ecosystem acidification experiments
    Decreases in pH and elevated concentrations of aluminum have reduced the species diversity and abundance of aquatic life in many streams and lakes of the northeastern United States. Fish have received most of the attention to date, but entire food chains are often adversely affected. In the Adirondacks, a significant positive relationship exists between the pH of lakes and the number of fish species present in those lakes. Surveys of 1,469 Adirondack lakes conducted in 1984 and 1987 show that 24 percent of lakes in this region do not support fish. These lakes had consistently lower pH and higher concentrations of aluminum than lakes that contained one or more species of fish. Even acid-tolerant fish species such as brook trout have been eliminated from some waters in the northeastern United States.
    {AcidRainTrees1.jpg} Trees destroyed by acid rain.
    (view changes)
    1:42 pm
  4. file AquaticSpecies-pH.png (deleted) uploaded Deleted File
    1:31 pm

More