Age no impediment to hot sex

Scientists in the US and Australia have shown that age is not a barrier to hot sex, at least when it comes to one of the world's oldest species of tree. Reporting their findings in the journal Science, University of Utah researcher Irene Terry, together with Gimme Walter, Chris Moore and Craig Hull from the University of Queensland, have solved a long standing puzzle about the reproduction of cycads, primitive plants dubbed "living fossils" that date back almost 300 million years.

Plastic Bottles Release Faster Sex Disrupting Chemical in Contact With Hot Liquids!

Bisphenol A (BPA) was investigated in the 1930s during the search for synthetic estrogens. Diethylstilbestrol proved more powerful than estrogen, so bisphenol A was not used as a synthetic estrogen.

Currently, it is a primary monomer in polycarbonate plastic and epoxy resins. Bisphenol A is also employed as an antioxidant in plasticizers and as an inhibitor for polymerization in PVC. These plastics are a common constituent of many products, from sunglasses and CDs to water and food containers and shatter-resistant baby bottles.

Some polymers employed in dental fillings also contain bisphenol A, while epoxy is a common coating for the inside of cans in food industry. BPA leaks from plastics get cleaned with harsh detergents containing acidic components or at high temperatures, and now most people in developed countries present this chemical at very low concentrations. The chemical has been linked by some researches to sterility in women.

Chemistry of Autumn Leaf Color

How Fall Colors Work

Leaf Colors

The color of a leaf results from an interaction of different pigments produced by the plant. The main pigment classes responsible for leaf color are porphyrins, carotenoids, and flavonoids. The color that we perceive depends on the amount and types of the pigments that are present. Chemical interactions within the plant, particularly in response to acidity (pH) also affect the leaf color.

Chemicals Lubricants Paints

Lubriplate 293 - Emb Lithium Polymer Grease

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*Testing Approval: Usda Approved, H2. [293-L0148-035] Truck Delivery

Swypers Industrial Hand & Tool Wypes
Hand & Tool Towels

Pre-moistened towels provide easy and effective waterless cleaning. Awesome product for any outside industry.

Effectively Cleans: Inks, Oils, Tar, Permatex, Graphite, Grease, Paints, Adhesives, Putty, and Asphalt

Chemicals That Fuel Your Sex Life

There are a host of sexual chemicals that affect your mind and body during and after sex. Check 'em out.
Prolactin;
What it does:Prolactin relieves sexual arousal after orgasm and takes your mind off sex. It rises sharply immediately after orgasm in almost everyone. It's one of the few moments of the day when we men aren't preoccupied with sex.
How it makes you feel:
Prolactin disengages you from sex after an orgasm, allowing you to think of other things besides the naked woman right in front of you. If after sex your mind is flooded with activities and chores you need to accomplish that day, that is prolactin at work. Just imagine how much more progress we could all make in our lives if they pumped this stuff into the water supply.
Oxytocin
What it does
Secreted by the pituitary gland, oxytocin stimulates the prostate, causes muscle contractions and sensitizes nerves. Research has shown that increased oxytocin produces more intense orgasms.

History of anesthesia

History of anesthesia
Methods for lessening the sensation of pain during surgery date back to ancient times. Read more: Anesthesia - body, used, chemical, methods, gas, cells, effects, cause, change, History of anesthesia, Emergence of anesthesiology, Types of anesthesia http://www.scienceclarified.com/Al-
Emergence of anesthesiology
Anesthesiology was slow to develop as a medical specialty. By the end of the nineteenth century, ether—which was considered safer than chloroform—was administered by persons with little medical experience. Nurses were eventually assigned to this task, becoming the first anesthetists at the turn of the century.Read more:
Types of anesthesia
Modern anesthesia uses both chemical agents and nondrug methods as preparation for medical procedures. Chemical agents are drugs that can be administered by mouth, by injection into muscle or under the skin with a needle, intravenously (by needle into a vein), or with a gas mask for inhalationRead more:

Burns, Chemical

Background
Chemical burns can be caused by acids or bases that come into contact with tissue. Acids are defined as proton donors (H+), and bases are defined as proton acceptors (OH-). Bases also are known as alkalis. Both acids and bases can be defined as caustics, which cause significant tissue damage on contact.
Pathophysiology
Most acids produce a coagulation necrosis by denaturing proteins, forming a coagulum (eg, eschar) that limits the penetration of the acid. Bases typically produce a more severe injury known as liquefaction necrosis.
Sex
Assaults with caustic chemicals worldwide are more likely to occur against women.4
Age
Adults and children are nearly equally exposed to caustic chemicals. Adults exposed to industrial strength chemicals often suffer more severe burns.

Health and Medicine:

Authors:Organizing Committee for the Workshop on Health and Medicine, Committee on Challenges for the Chemical Sciences in the 21st Century, National Research Council Authoring Organizations
Description:The report assesses the current state of chemistry and chemical engineering within the context of drug discovery, disease diagnosis, and disease prevention. Also addressed are chemical and chemical engineering challenges in pharmaceutical synthesis, delivery, and manufacture. ...Read More

Chemical Senses

View Current Issue (Volume 35 Issue 6 July 2010)
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Chemical Senses publishes original research and review papers on all aspects of chemoreception in both humans and animals. An important part of the journal's coverage is devoted to techniques and the development and application of new methods for investigating chemoreception and chemosensory structures.

The Chemical Senses

Overview.

Three sensory systems associated with the nose and mouth—olfaction, taste, and the trigeminal chemosensory system—are dedicated to the detection of chemicals in the environment. The olfactory system detects airborne molecules called odors. In humans, odors provide information about food, self, other people, animals, plants, and many other aspects of the environment. Olfactory information can influence feeding behavior, social interactions and, in many animals, reproduction. The taste (or gustatory) system detects ingested, primarily water-soluble molecules called tastants. Tastants provide information about the quality, quantity, pleasantness, and safety of ingested food. The trigeminal chemosensory system provides information about irritating or noxious molecules that come into contact with skin or mucous membranes of the eyes, nose and mouth. All three of these chemosensory systems rely on receptors in the nasal cavity, mouth, or on the face that interact with the relevant molecules and generate receptor and action potentials, thus transmitting the effects of chemical stimuli to appropriate regions of the central nervous system.

Chemical Pathology

Chemical Pathology
Chemical Pathology is another discipline in the field of Pathology which deals with the entire range of disease. It encompasses detecting changes in a wide range of substances in blood and body fluids (electrolytes, enzymes and proteins) in association with many diseases. In addition, it involves detecting and measuring tumour (cancer) markers, hormones, poisons and both therapeutic and illicit drugs. For example Chemical Pathologists are involved in assessing levels of iron in the blood, measuring the levels of enzymes that are released into the blood after a heart attack to help in the diagnosis, and in the measurement of certain proteins produced by cancers to monitor the response to their treatment.

High Performance Formulated Fluids and Lubricants

The broad product line of UCON™ formulated fluids and lubricants and base stocks include

products that outperform petroleum, animal and vegetable oils.

These polyalkylene glycol (PAG)-based synthetic products can be varied and controlled to a degree not possible with natural oils and lubricants. They are used in applications from hydraulic fluids to quenchants, and from machinery, gear and bearing lubricants to compressor lubricants.

Chemical Oxygen Demand

Chemical Oxygen Demand (COD) is a vital test for assessing the quality of effluents and waste waters prior to discharge. The COD test predicts the oxygen requirement of the effluent and is used for the monitoring and control of discharges, and for assessing treatment plant performance.
The standard test for COD involves digesting the sample with strong sulphuric acid solution in the presence of chromium and silver salts.

Plastic Bottles Release Potentially Harmful Chemicals (Bisphenol A) After Contact With Hot Liquids

When it comes to Bisphenol A (BPA) exposure from polycarbonate plastic bottles, it's not whether the container is new or old but the liquid's temperature that has the most impact on how much BPA is released, according to University of Cincinnati (UC) scientists

Scott Belcher, PhD, and his team found when the same new and used polycarbonate drinking bottles were exposed to boiling hot water, BPA, an environmental estrogen, was released 55 times more rapidly than before exposure to hot water.
"Previous studies have shown that if you repeatedly scrub, dish-wash and boil polycarbonate baby bottles, they release BPA. That tells us that BPA can migrate from various polycarbonate plastics," explains Belcher, UC associate professor of pharmacology and cell biophysics and corresponding study author

.

Chemical Kinetics

Skills to develop
Explain the term chemical kinetics, and describe factors that influence rate of chemical reactions
Define and use proper units for chemical reaction rates.
Give the conditions for homogeneous and heterogeneous reactions.
Chemical Kinetics Chemical kinetics is the study and discussion of chemical reactions with respect to reaction rates, effect of various variables, re-arrangement of atoms, formation of intermediates etc. There are many topics to be discussed, and each of these topics is a tool for the study of chemical reactions. By the way, the study of motion is called kinetics, from Greek kinesis, meaning movement.
At the macroscopic level, we are interested in amounts reacted, formed, and the rates of their formation. At the molecular or microscopic level, the following considerations must also be made in the discusion of chemical reaction mechanism.
Molecules or atoms of reactants must collide with each other in chemical reactions.
The molecules must have sufficient energy (discussed in terms of activation energy) to initiate the reaction.
In some cases, the orientation of the molecules during the collision must also be considered.

chemical condom

Big impact from enlarging condoms
British condom maker Futura Medical said that results of a study showed its new condom helped men have firmer and bigger erections, as well as a longer-lasting sexual experience.
Shares in the company, which specialises in sexual healthcare and pain relief, rose 14.5 per cent to 59.25 pence ($NZ1.59) on hopes the condom, which will be marketed by Durex condom-maker SSL International, could go on sale next year.
Futura said the study of 108 healthy couples showed its CSD500 condom helped men to get a firmer erection compared with a standard condom, increased penis size and made the sexual experience last longer, delivering statistically significant results.
The condom has a small amount of gel in its peak that dilates the arteries and increases blood flow to the penis.
Chief Executive James Barder said the study results underpinned hopes the contraceptive will start generating revenues in 2008.
Barder said global consumption of condoms was around 14 billion per year, of which half are branded condoms that are actually sold, with the rest being condoms distributed to promote safer sex and in developing countries

Shell Chemical LP - Mobile, United States of America

Manufacturing locations ,

History
- Since acquisition, Shell Chemical LP has conducted some debottlenecking, including the # 1 Crude Unit and the Vacuum Unit, to increase Heavy Olefin Feed production.- The facility was purchased by Shell on 1 August 1996.- The original facility was built and operated by Louisiana Land & Exploration Company, starting in 1975 with a single crude unit and reformer. Various units were added over time.

Nuts and Bolts of Chemical Oxygen Demand

Biochemical Oxygen Demand (BOD) is a definitive indicator of required treatment in wastewater, and estimating BOD is an important part of wastewater treatment process control. The U.S. Environmental Protection Agency (USEPA) requires wastewater treatment plants to bring BOD within limits before discharging treated wastewater, and accurate test results must be recorded for regulatory reporting. Thus, measuring BOD in treated water is an important part of the monitoring process. Many wastewater treatment facilities use a faster Chemical Oxygen Demand (COD) test to estimate BOD levels.
Oxygen demand is an important parameter for determining the amount of organic pollution in water. Testing oxygen demand has its widest application in measuring waste loadings of treatment plants and in evaluating treatment efficiency. Biochemical Oxygen Demand (BOD) is a definitive indicator of required treatment in wastewater, and estimating BOD is an important part of wastewater treatment process control. High influent BOD requires extensive treatment to provide the oxygen necessary to break down the water's organic contents.

THINNING FLAT PANELS

Materials suppliers are thrilled by the flat-panel industry's growth, but are under pressure to trim back on costs

When airline pilot Mick Jaffe and his wife, Chris, went shopping in Hong Kong to replace their television set a few weeks ago, they did not do what producers of flat-screen TVs are expecting. After looking at all the models, the Jaffes left the shop with a traditional 29-inch cathode-ray tube set instead of one of the newer models based on plasma or liquid-crystal technology. "In Taiwan, Frank Wang, a sales manager at local color resist producer Eternal Chemical, says his firm has an advantage in marketing to Taiwanese display manufacturers. "We can offer better service, we have a common language, and we're more familiar with the local market," he says. But he admits that Eternal has a hard time parlaying this advantage into new sales. Customers find it risky to switch to a new supplier whose material might later prove unsuitable. Moreover, display manufacturing equipment made in Japan is often guaranteed to work only with certain Japanese materials.

Warning: Toxic chemical triclosan can turn your toothpaste into chloroform

For years, I have warned people of the danger of personal care products. If you look at the ingredients manufacturers put in their products -- soaps, deodorants, toothpastes and so on -- you will be horrified. These ingredients are highly toxic and cause cancer. They promote leukemia, nervous system disorders and liver problems. Now, some new information has come from Virginia Tech. Researchers that have found that the chemical triclosan, which is found in a lot of antimicrobial soaps and toothpaste products, can react with chlorine in the tap water. Guess what you get? (This is the horrifying part.) Chloroform. This is a toxic chemical that can give you cancer. In the old movies, you might have seen someone give a person chloroform to knock them unconscious. If you breathe enough chloroform, you will die.

Textile Chemicals

During the process of manufacturing, textile has to go through a long process of chemical and non chemical treatments. The Textile finishing procedure includes preparation and pretreatment, dyeing, printing and refinement of fabrics. Certain Textile Chemical Products are highly specialized chemicals such as biocides, flame retardants, water repellents and warp sizes. Others are relatively simple chemicals or mixtures such as emulsified oils and greases, starch, sulfonated oils, waxes and some surfactants. Over sixty distinct textile chemical product classes are used in yarn formation, fabric pretreatment and finishing, textile laminating and coating, and other miscellaneous applications.

Desizing. During weaving, specially for the fabrics made from cotton or blends, the warp threads are coated with an adhesive substance known as 'size'. This is done to prevent the threads from breaking during weaving. Starch and its derivatives are the most common sizing agents. After weaving, the 'size' is removed again in order to prepare the fabric for dyeing and finishing. This is called Desizing. It is done by treating the fabric with chemicals such as acids, alkali or oxidising agents.

Chemical Bonding

Though the periodic table has only 118 or so elements, there are obviously more substances in nature than 118 pure elements. This is because atoms can react with one another to form new substances called compounds (see our Chemical Reactions module). Formed when two or more atoms chemically bond together, the resulting compound is unique both chemically and physically from its parent atoms.
Let's look at an example. The element sodium is a silver-colored metal that reacts so violently with water that flames are produced when sodium gets wet. The element chlorine is a greenish-colored gas that is so poisonous that it was used as a weapon in World War I. When chemically bonded together, these two dangerous substances form the compound sodium chloride, a compound so safe that we eat it every day - common table salt!... by Anthony Carpi, Ph.D.

Chemical in sperm 'may slow ageing process'

The secret of eternal youth? Photo: GETTY/AFP

Researchers in Austria say that human sperm might be the next weapon in the fight against ageing.

A new study by scientists at Graz University found that spermidine, a compound that is found in sperm, slows ageing processes and increases longevity in yeast, flies, worms and mice, as well as human blood cells, by protecting cells from damage

Engineering a new way to study hepatitis C

Tissue engineers have successfully infected liver cells in the laboratory, allowing a better way to test new drugs.
Liver cells in a micropatterned co-culture form tube-like structures (shown here in green) that resemble bile capillaries found in a human liver. Image courtesy of Sangeeta Bhatia lab, MIT
Hepatitis C, a virus that can cause liver failure or cancer, infects about 200 million people worldwide. Existing drugs are not always effective, so many patients end up on long liver-transplant waiting lists.One reason that no better treatment options exist is the lack of a suitable liver tissue model to test new drugs in the laboratory. But now, researchers from MIT and Rockefeller University have successfully grown hepatitis C viruses in otherwise healthy liver cells.In the new tissue model, liver cells are precisely arranged on a specially patterned plate and surrounded by supportive cells, allowing them to live and function for four to six weeks. The cells can be infected with hepatitis C for two to three weeks, giving researchers the chance to study the cells’ responses to different drugs.“With this model system, one can study hepatitis C and its chronic effects in greater mechanistic detail,” says Salman Khetani, former MIT postdoctoral associate and an author of two recent papers on the work. “Since it uses normal human liver cells rather than cancer-derived ones, our system may provide a better understanding of how hepatitis C progresses in humans, and of potential cures.”The research team, led by Sangeeta Bhatia, professor in the Harvard-MIT Division of Health Sciences and Technology and MIT’s Department of Electrical Engineering and Computer Science, and Charles Rice of Rockefeller University, reported the new method in recent papers published in the Proceedings of the National Academy of Sciences and Nature Biotechnology.

Carbon-capturing enzyme: MIT chemists learn from nature

MIT Energy Initiative.

Each year, microorganisms containing a certain enzyme remove an estimated 100 million tons of the pollutant carbon monoxide (CO) from the environment. Now, MIT researchers have new insights into how they go about it — happy news for inorganic chemists who have long been trying to synthesize compounds that can do the same thing without the living creature.

Organic Division

Division News and Upcoming Meetings:

Nomination Request for the Organic Assistant Professors Symposium at the 2010 Fall ACS Meeting;

The Executive Committee of the Organic Division of the ACS wishes to give greater opportunities for Assistant Professors to present their works at national settings prior to their tenure decisions. Consequently, we are scheduling the 5th Organic Assistant Professors Symposium at the 2010 Fall ACS meeting. The intent of the Symposium is to have the program composed of Assistant Professor speakers who are entering their fifth or sixth years and who have not yet been considered for tenure. Sixteen speakers will be invited to give 30-minute presentations on their work.

The 2009-10 DOC Graduate Fellowship Winners 2009-10;

The Division of Organic Chemistry congratulates the following 11 graduate students who are the 2009-10 DOC Fellows. The Division also gratefully acknowledges the corporations that sponsored these awards this year and in the past. This program is in its 28th year and has awarded at least 360 fellowships. You can view brief bios and essays of this year's Fellows by clicking on the names of the students. To see the entire list of fellowship winners since inception.

Chemical Formulas

Chemical formulas; such as HClO4 can be divided into empirical formula, molecular formula, and structural formula. Chemical symbols of elements in the chemical formula represent the elements present, and subscript numbers represent mole proportions of the proceeding elements. Note that no subscript number means a subscript of 1.

The formula weight is the sum of all the atomic weights in a formula. The evaluation of formula weight is illustrated in this example.
Example 1
What is the formula weight of sufuric acid H2SO4?
Solution:The formula also indicates a mass as the sum of masses calculate this way2*1.008 + 32.0 + 4*16.0 = 98.0where 1.008, 32.0 and 16.0 are the atomic weights of H, S, and O respectively.
Discussion: If the formula is a molecular formula, the mass associated with it is called molecular mass or molecular weight. As an exercise, work out the following problem.
What is the molecular weight of caffeine, C8H10N4O2?
The diagram shown here is a model of the caffeine molecule.
With the aid of a table of atomic weights, a formula indirectly represents the formula weight. If the formula is a molecular formula, it indirectly represents the molecular weight. For simplicity, we may call these weights molar masses, which can be formula weights or molecular weights.