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As water takes away your body heat 25 times faster than air, it is crucial to choose the appropriate thermal protection when diving. Several dives in a wet suit in colder water than 65ºF/20ºC will diminish your abilities and efficiency seriously. Under 55ºF/16ºC a scuba dry suit is essential.
The main function of dry scuba suits is to keep the diver dry: the dry suit has several seals that prevent the water from coming in. Frequently divers wear undergarments under the scuba dry suit because they create layers of air inside the scuba dry suit that improve thermal insulation. This means that a dry scuba suit can be used in a wide variety of water temperatures needing only to adjust the underwear type to go underneath. We must also consider when making the choice of underwear, the type and intensity of the activity we are planning to do and our body size.
Scuba dry suits are easier to put in and off than wet suits, but they also required specific and professional training (do not try to figure it out on your own!) and some practice to learn how to use them. Scuba dry suits have a buoyancy control system incorporated to help you maintain neutral buoyancy. This is achieved through valves: an inflator valve (usually in the middle of your chest) and an exhaust valve (usually in the outside of your left bicep). On top of this, you must always wear a buoyancy compensator as a back up to guarantee you a surface flotation device (in the rare case that the one on the suit would not work). It is important to remember that it is very difficult to control both systems at the same time and to do so could distract you from the basic measures to have a safe dive, so do never use them together!
Types of Scuba dry Suits: There are basically two types of scuba dry suits:
• Membrane suit: a material called trilaminate. This material is very thin (1mm) so it requires more protective thermal underwear than a neoprene one.
• Neoprene. The material is very thick (7/8mm) which allows lighter on non underwear. In deep dives, neoprene can be compressed to 2mm, loosing part of its insulation properties. However, it is possible to buy pre-compressed neoprene to avoid this inconvenience.
A Couple of Tips about Scuba dry Suits
You may want to consider the following recommendations when planning to dive with a scuba dry suit.
• Check your suit a few days before the immersion: make sure waterproof zippers, seals and valves are in good condition and if not send them to repair.
• When wearing the suit, your seals and neck seals must be correctly trimmed and adjusted. Latex seals are trimmed often till they are 15% smaller than your neck and wrist circumference. Neoprene seals need to be stretched over night: the neck on the widest part of the scuba tank and the wrist over a tin can.
• Use the minimum amount of weight possible to help you achieve neutral buoyancy.
• Make sure you choose a body that understands how your scuba dry suit works.
• Practice, practice and practice till it becomes a second nature for you.
How to Maintain your Scuba Dry Suits
Rinse it well with clean fresh water after every dive. Check that seals, valves and zippers work correctly and have them fixed it not. You don´t need to rinse the inside unless is wet or damp (pay special attention to the bottom of the boots). Dry it out of the sun and without hangers. Do not storage it till it is fully dried to avoid mold and mildew.
The zippers should be lubricated wit bees or paraffin wax. For the seals you can use talcum powder or if you don´t have any, soapy water. To storage it, roll it and put it in a sealed bag in a cool dry place, away from sources of ozone (like hot water heaters or electric motors). In any case, the best is to consult your scuba dry suits manual for care instructions.
Amalia Perez is an amateur diver that provides useful information for people like her that are just learning to dive http://scubadrysuits.blogspot.com Check out more about diving suits at http://scubadrysuits.blogspot.com/2009/06/dive-skin.html
Successful Writing Dynamics For Online Marketers
By Marige O'Brien Copyright © 2006
Much to their surprise, many online marketers discover how much writing is involved with marketing. Since few aspire to "be a writer," this comes as a mild shock as they face the challenge of writing everything from web content to articles to emails, etc., etc. While it may seem like a daunting task at first, the good news is that, with practise, learning to write professionally is relatively easy, once the dynamics are understood.
Because when the dynamics are overlooked, whether through ignorance or other reasons, the results are the same: poor sales, low sign-up response, and little success. And the marketer remains mystified as to why. Why do their emails have no response? Why are their articles remaining unpublished, despite submitting to hundreds of markets? Why doesn't their site have more visits or re-visits? Why.
One reason could be that their text/content/copy is less than professional. The fact is, like any other kind of writing, professional business writing has very specific parameters, including "do's" and "dont's". These parameters, or dynamics, can make all the difference between success and failure. Below are a list of the essentials for business and/or professional writing, both online and off.
THIRD-PERSON PERSPECTIVE
First and foremost, the "third-person perspective" is the standard. In writing, there are three perspectives: first-, second- and third-person. First- and second-person are most common in fictional work or confessional-type articles, while third-person perspective is used almost exclusively in professional business writing.
To write in the "third-person" is to remove the author's presence from the content as much as possible. This is necessary so that the primary focus shifts to the idea or proposal. This is referred to as "perspective" because there is no one rule: rather it is a way of phrasing each sentence.
BREVITY
In editorial work, curtailing superlatives is a matter of taste and style. In business writing, it is a matter of respecting both the reader's time and the space alloted, both of which are limited. Excessive wording is not discouraged simply for its own sake. Rather, in the no-nonsense world of business, concise wording demonstrates a thorough analysis of the issue, thereby successfully conveying professionalism.
FACT-BASED
Business writing is comprised of 85% fact-based information and 15% expert opinion. This is due to the serious nature of the work, which leaves little room for speculation. Of course, many articles are based on some opinion or viewpoint. But the opinion is not the focus. Rather, it is the facts that brought about this opinion that matter. As when winning a debate, stating facts are a stronger weapon than voicing opinions.
PRONOUNS
Unless the topic of an article is a specific person, use of pronouns (such as I, me, my, you and your, especially) should be replaced by specific nouns, such as the group or groups specific to the article or content. For example, this article relates to writers and online marketers so both can be used directly.
The only noteable exception to this may be in writing letters or emails which, by their very nature, demand a first-person perspective.
GENERAL FORMAT
In fiction, most writing begins with the background and reaches a climactic conclusion. In business writing, the opposite is true because the most important facts/information begin the content and it graduates down from that. This is to ensure that the most important information is readily available, even to those only skimming the item.
Also, one general tip is to always use positive phrases, rather than negative. For reasons that defy logic, positive phrases are more direct and to the point. It is always easier to say, "facts speak for themselves," rather than, "while opinions are important, unless they're based on facts...etc."
SPECIFIC FORMAT
Because of the nature of business writing, a certain amount of formality is expected. This includes proper grammar, punctuation, etc. Additionally, contractions (don't, can't, etc.) should also be avoided, as should clauses and quantifiers (i.e., though, but, also, etc.) wherever possible. Of course, there are times when this is unavoidable, especially when continuity and readability issues are involved.
One good rule of thumb is to follow the standard essay format. This consists of:
1) Declaration (Opening) paragraph
2) Three-to-Five Argument/example paragraphs
3) Closing/conclusion paragrah
Though more sophisticated formats naturally develop from this, most articles/content adhere to this basic formula.
THE INTERNET FACTOR
Until this point, the above items universally apply to all types of business writing. In fact, some points become even more relevant, such as brevity and facts over opinion, BECAUSE the potential audience is more diverse and easily distracted. And, too, writing successfully for the internet is very much like walking a tight-rope without a net because there is no editor to review the work, no fact-checker to be certain of the details. The writer, themselves, must supply these and their own reputation -- rather than a magazine's or department's -- will be casuality if they fail.
Plus, the proverbial "wow" factor must be considered. Because, while it is much easier to publish something on the internet, ironically enough, it also becomes much harder to find a significant audience. To compensate for this, a certain amount of leniency is afforded, true. But that leniency is limited, too.
So, while these policies define the basics of all business writing, to be successful online requires both a good understanding of the writing technique, as well as a general understanding of the internet. Marrying the two successfully will lead to the writer's own success.--mo
About the Author
Marige O'Brien works as a writer, web designer and Internet Marketer. Visit her Website, Tracker Mo's Den for her latest recommendations in i-marketing tools and biz opps. Sign up for her free, 100% original, weekly newsletter, Tracker Mo's Report.
Reportlinker Adds Global Flexible AC Transmission Equipment Industry
NEW YORK , Nov. 18 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue: Global Flexible AC Transmission Equipment Industry http://www.reportlinker.com/p0109909/Global-Flexible-AC-Transmission-Equipment-Industry.html This report analyzes the worldwide markets for Flexibe AC Transmission Equipment in US$ Millions by ...
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