Chemical Engineering

Diesel fuel can start to gel and potentially clog fuel filters and lines at temperatures below approximately 32°F (0°C). A specific temperature at which diesel fuel will gel can vary depending on the type and blend of diesel fuel. To prevent gelling, additives can be used to lower the gel point of diesel fuel.

PLGA when unmodified does tend to be hydrophobic. However it can be modified to ensure that it is hydrophilic. The best approach to this would probably be to do a literature search which would be able to give you a more exhaustive answer in respect to * the form in which your PLGA is (i.e as prepared or prepared through solvent phase separation/super critical processing) * the thickness of the material (is it 1nm or 1m?)

The element that fits this criteria is francium (Fr). All isotopes of francium are radioactive, with the most stable isotope having a half-life of only 22 minutes. Francium is a highly unstable element and is very rare in nature.

Neon is a noble gas and is a poor conductor of electricity. It is an insulator at normal conditions because it lacks free electrons to carry an electric current.

Catalyst reformers come in three flavours: non-regenerative, semi-regenerative (SRR) and continuous catalyst regeneration (CCR). The earliest were non-regenerative, most of these are no longer in service. Today most catalytic reformers are SSR and the latset technology (around since 1971 UOP) are CRR.

Catalytic reformers use a solid catalyst (usually chlorinated Pt/alumina or Pt-Re/alumina) under high partial pressures of hydrogen at around 500degC to convert low octane straight run naphtha (usually heavy naphtha: C6-C11, b.p. 140-200degC) into high octane "reformate".

However, the catalyst deactivates over time due to coke build-up and loss of chlorine. A regeneration is required to restore catalyst activity and metals dispersion.

In the semi-regenerative (SRR) version, the reactors have to be taken off-line for regeneration every 6-24 months depending on rate of loss of activity.

In continuous catalyst regeneration (CRR) version a portion of the catalyst is contiuously transferred from the reactor system to a regenerator where it undergoes controlled coke combustion and oxychlorination to restore activity and metals dispersion - without the need to take the unit off-line.

CRR process units can be licenced from UOP or Axens.

Paul Diddams, Intercat

Urine has no chemical formula because it is a "combination" of things. It contains water, which you know is H2O, urea, which is (NH2)2CO, sodium chloride, which is NaCl, and a number of other dissolved salts and organic compounds. Use the link below to learn more.

Resonance effect: It is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis formula.A molecule or ion with such delocalized electrons is represented by several contributing structures called as resonance structures or canonical forms.

Inductive Effect: It is a permanent effect. When group attached to carbon atom attract electrons from them or push the electrons toward it is called as Inductive effect.

it is a gas, used to help vegetables as tomato to ripen after picking theme out of trees as informed.

diamonds are made of carbon atoms. enough said.

The relative rate constant is a ratio of the rate constants of two reactions in a chemical reaction mechanism. It is used to determine the rate of reaction between different reactants in relation to each other.

An example of distillation is the process of separating alcohol from water to produce spirits like vodka or whiskey. This is done by heating the mixture to create vapor, which is then cooled and condensed back into a liquid form.

The conversion factor to convert inches to "Nominal Bore" (NB) is 25.4 mm per inch. NB sizes are based on the internal diameter of a pipe, and they do not directly correlate to inches.

ELECTROFILIC REAGENTS:It is the combination of two words(electro means electron and phile means loving).Therefore those reagents that contain positive charge on it are called eletrophilic reagents. These reagents have the property of attacking on the negative part of the other substance.Some of the reagents are(NO2+ ,SO3+) NUCLEOPHILIC REAGENTS:Combination(nucleo means nucleus and phuile means loving)

Because alloys often have better properties than their parent metals. Stronger, rust resistant etc

Petrol is a flammable liquid mixture primarily derived from crude oil. It is commonly used as a fuel for internal combustion engines due to its high energy content. Petrol is volatile, easily ignitable, and highly combustible.

Check out: http://www.efunda.com/processes/heat_treat/hardening/diffusion.cfm parts are packed in a high carbon medium such as carbon powder or cast iron shavings and heated in a furnace for 12 to 72 hrs at 900degree celsius. at this temp co gas is produced which is a strong reducing agent

Atoms can be split through a process called nuclear fission, in which the nucleus of an atom is split into two or more smaller nuclei. This process releases a large amount of energy in the form of heat and radiation. Nuclear power plants use controlled nuclear fission reactions to generate electricity.

Typical jobs you can get as a chemical engineer:

1. Production Engineer

2. Process Engineer

3. Quality Control and Reliability Engineer

4. Plant Manager

5. Advanced Process Control Engineer

6. Operations Manager

7. Environmental Specialist

8. Project Supervisor

9. Energy Expert

10. Materials Technologist

Sublevels of elements refer to the energy levels within an atom where electrons are found. These sublevels are designated by the letters s, p, d, and f. Each sublevel has a maximum number of electrons it can hold (2 for s, 6 for p, 10 for d, and 14 for f) and they are arranged in order of increasing energy within an atom.

In dyeing, the exhaust method refers to the process of adding dye to a textile substrate until all the dye has been absorbed by the substrate or bath. This method is useful for achieving full color coverage and intense color saturation on the fabric. The exhaustion of dye in the bath indicates that the dye has been fully utilized in the dyeing process.

Federal standards for city-supplied drinking water are governed by the Environmental Protection Agency (EPA) under the Safe Drinking Water Act, which sets limits on various contaminants. Commercial bottled water, regulated by the Food and Drug Administration (FDA), must meet the same quality and safety standards as tap water but is subject to different testing and monitoring requirements. Additionally, bottled water may be subject to labeling regulations that differ from those for tap water.

I do not have real-time data on the current price of dimethyl ether. Prices can vary based on location, supplier, and market conditions. It is recommended to check with local suppliers or online marketplaces for the most up-to-date pricing information.

An eductor is a device that uses a fluid (usually a liquid or gas) to create a vacuum or achieve a pumping action. It works based on the principle of fluid dynamics, where a high-velocity fluid stream entrains a lower-velocity fluid or solid material through a nozzle, generating a suction effect. Eductors are commonly used for tasks like mixing liquids, evacuating gases, and transporting solids in various industries.