Using Active Vibration Control Systems to Stabilize DIC Microscopy Systems

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Differential interference contrast (DIC) microscopy is a specialized technique used in the study of live and unstained animal and human tissue samples in medical science. The accuracy of the system relies on the spatial uniformity of its many parts. Due to this, active vibration control is necessary to ensure image accuracy. 

DIC microscopy is a method of optical microscopy illumination that enhances contrast in transparent specimens. Polarized light is directed into a modified Wollaston prism to split the light into two separate beams. One of the beams is directed towards the specimen, while the other only passes through the background. Both beams are recombined through another Wollaston prism, located above the microscope's objective lens.

This technique is able to produce contrast that visually displays the gradient of optical paths in every part of the specimen. The resulting image is monochromatic and has a three-dimensional appearance. 

The components of a DIC microscopy system, including the light source, stage, and prisms, must maintain uniform distance to ensure the clarity of the image. Subtle vibrations coming from the central HVAC unit, equipment in adjacent rooms, and traffic along the hallway can affect the system and decrease the quality of results. Noise from outside the building and the equipment present in the lab also produce vibrations.

Active vibration cancellation systems are necessary to ensure the stability of DIC microscopy systems. These advanced systems utilize piezoelectric sensors and actuators to detect incoming vibrations and react by either tuning isolators to minimize vibrations or sending a signal to cancel them out. The system also creates a feedback loop that dampens inherent resonances in mechanical structures. Active systems can be combined with passive isolation systems, such as stiff metal springs for load support, to isolate a broad range of frequencies. 

To find environmental solutions that can ensure the accuracy of DIC microscopy systems visit Herzan.com. 

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Guest Post: Age Is Not a Factor When Considering College Credit for Life Experience

 

As an adult, your ability to engage in vigorous academic activities will be strongly impeded by social as well as psychological factors. Even if the person has the money to fund the high cost of higher education, reduced mental alertness as a result of old age may contribute to poor academic performance on the part of the student. Most adult students tend to drop out of school once the demands of academic work puts a lot of pressure on them. In addition, adult students are usually in a hurry to complete their training program in order to benefit from the degree they are working for. Most of these people have time working against them as they seek to get hold of their degrees before they hit the mandatory retiring age. It will be economically bad for an adult student to spend a lot of money on higher education with the hope of getting an increase salary only to end up being pushed out of the job market due to the age factor.

People who have very much passed their prime but intend to work for higher academic recognition have to look at alternative programs that will allow them to achieve their aim at a very fast rate. Online universities have the academic programs that will help these people. Amongst the educational programs that are administered by online universities is the all important college credit for life experience degree program. Adults who are close to the retiring age and might not be able to cope with the stress associated with traditional education can fall back on their previous knowledge and work experience to gain college credit for life experience degrees.

What makes up life experience?

In order to gain college credits for life experience, one has to demonstrate a substantial amount of life experience to an academic institution. Most people tend to be confused as they do not know what experiences they need to quote on the application forms in order to better their chances of getting the experienced based degree. The main advantage of the college credit for life experience program is the fact that almost any experience gathered in real life can be converted into academic credits. From the activities one likes to engage in for the purposes of recreation right down to tasks at work to volunteer services, the individual who is very active in real life can obtain enough evidence to support his or her application for a life experienced degree. Courses taken at colleges and institutions that do not run the course-credit system can all find their equivalent value in the college credit for life experience system. In order to ease the process, individuals who intend on getting the life experience degree may decide to keep a portfolio in which they would document details of prior learning programs attended as well as seminars and any other activity that would prove vital in the assessment of the person’s request for an experienced based degree. Such individuals may consult the accredited online university for more information concerning the application process.

This article was put together by a retired educationalist who has over the years given valuable advice to adults who want to go back to school but has age going against them.

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Guest Post: Microsoft Launches the All New Windows 8

The final and fully finished version of the much talked about operating system Windows 8 is out now. On Friday, Microsoft also surfaced Windows 8 based devices in the retail markets. Though there have been several add-on and up gradations in this new version of Windows, but you need not like all these additions. There are, however, certain features in the new OS by ASP.Net application development giant that ought to be celebrated. These features will make you rejoice and help you in welcoming this new kid with open arms. 

Here are 8 superb features of Windows 8 that are worth a mention:

1. Storage Spaces: If you have been worried about losing your data in the mid of an important presentation, then worry no more. Windows 8 is here with its storage space feature. This feature allows you to pool multiple drives. This means even if one of your drives fails, your data is still secure.
2. File History: Very similar to the Time Machine utility of OS X, this feature of Windows 8 lets save multiple copies of your file. So, in case the current version of your file is lost, the other versions can be easily restored.
3. Charms Bar: If you have used Windows 8 as of now, you will be aware of the newly added Charms bar feature. It appears on the right hand side of the screen, if you swipe or click there. This feature is much more effective and resourceful than it seemed to be in the earlier versions of the OS. The charms bar icon provides the user with several icons for tasks such as sharing, searching, switching between Windows 7 desktop and metro environment and setting preferences.
4. Live Syncing: The live syncing feature is very resourceful. It lets you log into your Windows Live account just as you log onto your PC. Moreover, your Windows Live personalized settings can be traced down on any device that you use, provided you are using the same Live account.
5. Windows Reader: This is a built-in app in Windows 8 that lets you open a PDF file and take notes or highlight specific areas in it. Furthermore, you can also import PDFs in Word 2013 and edit them in their text form.
6. New and Improved Task Manager: This is one feature of the new OS that webmasters and admins would love in person. The revamped task manager gives a more specific and detailed view of the processes that are currently running.
7. Microsoft Store: Just like you get apps on your Windows phone, you can get Metro apps for your PC from the Microsoft Store. It is easy and quick.
8. Windows to Go: You can have the Enterprise Edition of Windows 8 with you on the go. Users can easily download the Windows environment on an external drive and then it can be used on any device that is compatible with Windows 7 and Windows 8.

The thought of a new operating system is overwhelming for any web application development company. If you are also super excited about the release of this new operating system, try it today!

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Guest Post: How To Import From China

The volume of goods now produced in China is limitless. So is the overseas market for those goods. This boom has brought about the resurgence of an entrepreneurial enterprise that had not seen much activity in recent years: the independent professional importer. While the import/export trade tended to be dominated by larger heavy-hitters in recent decades, the rise of Chinese manufacturing has now opened the doors to independents again, if they have the initiative and information to find the right products and import them to receptive markets. And, if they are willing to put forth the effort to learn how to import from China. Doing business in China presents certain obstacles, it’s true. There are always some risks involved. However, overcoming these challenges is very doable for the motivated independent importer and the associated risks are manageable. Moreover, the opportunities that await those who succeed are very lucrative. Here are some hints for those just beginning to investigate how to import from China. 

1. Research your target market. First take into account the level and nature of the demand in your target market. You’ll need a focused picture of what products will sell in the area to which you’re planning to import. Once you've determined the ideal market, put together a formal evaluation of the prospects for importing various products from China. Import market sourcing publications can help you select an appropriate product or you can travel to China to see for yourself and make a decision first-hand. 

2. Locate a reliable supplier. Getting this step right is vital to your ultimate success in learning how to import from China. You’ll find no shortage of Chinese companies with very impressive low prices. However, low price must be balanced with a strong track record of dependability in quality control, consistent service and responsiveness. While many companies in China have made great strides in adopting western standards of doing business in this regard, others are still in the learning process and may not provide the level of quality and service to make your import enterprise a success in First World markets. Contact high-level, responsible persons at the supplier and make known to them your concerns that quality and a dependable supply are a priority. Make sure they share your goals and expectations. Remember to ask for (or offer to purchase) a variety of samples taken randomly from production in order to evaluate the consistency of quality. 

3. Tour the factory. If your resources permit travel, there’s no replacement for a first-hand inspection of the production process in China along with a face-to-face meeting with potential suppliers. You can always consolidate visits with several suppliers into a single trip. It’s the best way to get a feel for the factory’s production methods and capacity and to compare it other possible suppliers of import products.

4. Verify all shipments. Unfortunately, if problems with suppliers of imports from China occur, they often come about during the shipment phase. Typical shortfalls include the incorrect count of merchandise, the wrong product type or incorrect types mixed in with correct types, insufficient packing for shipping and damaged or unusable products upon arrival. Very often, obtaining replacements or compensation from Chinese companies may involve a major delay. Another option to reduce these complications is to engage the services of a local reputable export agent in China to inspect the products and observe and verify the packing and shipping process all the way to the loading of the shipping container. 

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Guest Post: On-Campus Learning Vs. Online Education

Education provided in regular campuses has been prevalent and standard among kids for decades or even centuries. With this system, kids are enrolled in brick and mortar campuses where they have to attend class schedules as arranged by the school, together with the other students within their same age and intellectual level. 

However, there are factors that emerged through time which prompts the need to develop a different type of learning system, aside from the on-campus learning. Among these is the need to address the issues of some students such as physical disabilities, pregnancy, giftedness, having special needs, having a regular job, etc. and the increasing availability of advanced technology particularly when it comes to internet connections. With these factors, online education is becoming widely accepted by an increasing number of parents who wants the best form of education for their kids.

Now that we have different options of learning systems for our kids namely, the prevalent and traditional on-campus learning and the new but promising online education, a lot of parents are left in dilemma in choosing between these two. To help in weighing the options, let us take a look at the advantages that these two education systems have to offer:

On-Campus Learning

• Kids get to socialize with other students which is important in developing the child’s social and interacting skills. They will also be able to participate in regular school activities which kids consider an important part of their teen life such as being a part of the cheering team or football team, attending proms, competing in inter-school competitions, etc. 
• Students develop their oral communication skills by interacting with their peers, speaking in front of the class, participating in oral recitations, etc.
• Their educational background can be assessed better and faster when applying for a job, especially if earned from a reputable or well-known school since on-campus learning is the more acceptable and traditional way of getting a degree.
• Kids can get some form of motivation by getting a good standing among fellow students, impressing someone they like in school, getting to lead a group, etc.

Online education 

• Kids are spared from bullying, peer pressure, anxiety from intimidating teachers, and other negative social factors.
• Online students can choose the learning schedule that they are most comfortable with.
• Students registered in online education can study at the comfort of their home giving them a more relaxing environment which is very ideal for learning.
• Kids with special needs or circumstances which can hinder in on-campus learning can still pursue their degree with online education.
• Online education is more convenient for the child and less costly since the online student won’t have to spend minutes or even hours preparing in the morning for school and enduring traffic on the way to and from the school. Kids also avoid spending for uniform or school clothes and transportation. 

Final Words 

Education is important in rearing the child’s future and parents should always take time in choosing the right educational system that will work best for their kids. Being aware of the advantages of both sides should help in ascertaining which learning system will suit the child best considering his or her circumstance, learning capacity, and character. 

About the Author:

Jaydeen Taylor authored this article who works for www.bestcriminaljustice.com.

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