![]() ![]() In this way, they gained the ability to become independent and move between cells. The progressive, or escape, hypothesis postulates that viruses evolved from sections of DNA or RNA that “escaped” from the genes of larger entities. Over time, they shed genes that did not help them parasitize, and became entirely dependent on the cells they inhabit. The regressive, or reduction, hypothesis suggests that viruses started as independent biological entities that became parasites. In reality, viruses may have evolved in any of these ways. Three competing theories try to explain the origin of viruses. Scientists use molecular techniques to compare the DNA and RNA of viruses and find out more about where they come from. Viruses do not leave fossil remains, so they are difficult to trace through time. Just as there are friendly bacteria in the intestines that are essential to gut health, humans may also carry friendly viruses that help protect against dangerous bacteria, including Escherichia coli. ![]() Seven coronaviruses can affect humans, but each one can change or mutate, producing many variants. It also has an envelope with crown-like spikes on its surface. A coronavirus, for example, has a sphere-like shape and a helical capsid containing RNA. Within these categories are different types of viruses. whether or not they have a protective lipid envelope derived from the host cellĮxamples of viruses with an envelope include the influenza virus and HIV.the type of their nucleic acid, which contains their genetic information.their shape and size, which may be rod-shaped, almost spherical, or other shapes.Scientists categorize viruses according to various factors, including: Next, the virus continues to reproduce, but it produces more viral protein and genetic material instead of the usual products that the cell would produce. It uses the host’s cellular machinery to make many copies of itself. This makes them unable to reproduce independently and totally dependent on their host.Īfter entering a host cell, a virus hijacks the cell by releasing its own genetic material and proteins into the host. They also do not contain ribosomes, so they cannot make proteins. They can grow and reproduce, but they do not produce adenosine triphosphate, a compound that drives many processes in living cells. There is some dispute about whether viruses meet the criteria for living organisms. There, if the conditions are right, they can multiply. These spikes are proteins that enable viruses to bind to and enter host cells. The core is covered with a capsid, a protective coat made of protein.Īround the capsid, there may be a spiky covering known as the envelope. Viruses are microscopic entities that have a core of genetic material, either DNA or RNA. The spherical viral particles, colored blue, contain a cross-section of the viral genome, in the form of black dots. Share on Pinterest API/Gamma-Rapho via Getty Images Electron microscope image of the first U.S. In this article, we discuss in detail viruses, including how they act and how they can affect people. ![]() ![]() This may be spiky and helps them latch onto and enter host cells. Some have an additional coat called the envelope. They consist of genetic material, DNA or RNA, with a coat of protein around it. This explains why a virus that causes illness in a cat may not affect a human. For example, severe acute respiratory syndrome coronavirus 2, or SARS-CoV-2, causes the disease COVID-19.Ī virus may also affect one organism in one way but a different one in another. Viruses are biological entities that can only thrive and multiply in a host, which is a living organism such as a human, an animal, or a plant. They are present in animals, plants, and other living organisms, and they can sometimes cause diseases. Viruses are microscopic particles that exist almost everywhere on Earth. ![]()
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![]() I want these videos to inspire you to try something new and give free motion quilting a go on your home sewing machine. I hope that really helps you realize that I really take my time, break it up into manageable bits and don’t stress about being off of the lines, because the lines are going away. You are going to see me quilt a pass in real time from the same angle I see. How to break the meander down into manageable pieces, where to place your hands and match up the stencil so you can have a seamless all over heart quilting design. Trim the excess off these two borders leaving a ¼ seam allowance. I'm a former elementary teacher and current mom, wife, and guacamole lover. Take your triangle to your sewing machine and stitch the two marked lines you just made. Author of the book, Scrappy Bits Appliqu, and founder of The Meander Guild, I design quilts & fabric and teach my unique techniques to quilters all over the world. I had some lime green thread on hand to use on the back. Arline included the lime green backing and the batik binding with the top. The motif actually pulled out the circle pattern even more. I cover how to use the stencil and pounce pad to transfer the markings to your quilt top. Hi there I'm an author, designer, and international speaker/teacher based in Austin, Tx. I decided to go with the circle meander with a bone-colored thread on the top. ![]() It would be so cute for a Valentine’s Day quilt, or just a quilt for someone you love. Today we are working with the new I Love It! stencil which has a really cute heart meander pattern. But we just did a MAJOR restock on all of our Full Line Stencil free motion quilting supplies, so we thought now was the perfect time! Thanks to everyone who has donated tops of goodies to make them all happen.It’s been a minute since we did a free motion quilting tutorial on a home sewing machine. I’ve loved many of the quilts that Ray has recently shared…just amazing. I bet this year’s Airing of the Quilts will be amazing. My thanks to you and the Cresco ladies for this awesome quilt that is ready for the Airing of the Quilts. ![]() The bone-colored thread gave the daisies some depth without being intrusive. I used the daisy motif to pick up the flowers in the panel blocks. I am thinking that the backing came from the Cresco ladies as well. The blue borders really do set it off in a special way. The colors are so soft with the vintage blocks in the quilt. ![]() I am guessing that they used a panel and cut it up and added to it to make this wonderful quilt. Each quilt is unique and individually designed. This quilt top came from the Cresco ladies.Īs many quilts as they make, they must piece quilts all day long, every day. Stippling is also referred to as Meandering because the lines randomly meander over your quilt without crossing. My thanks to you and Arline for another eye-catching quilt. Learn How to Free Motion Quilt Stippling Stippling is one of the most popular free motion quilting designs, and the first design I learned how to quilt as a beginner. The motif actually pulled out the circle pattern even more.Īrline included… the lime green backing and the batik binding with the top. I decided to go with the circle meander with a bone-colored thread on the top. She worked them into a pattern with lots of circles in it. Tons of batik scraps in this one as well. ![]() After a bit of digging I found this beauty that Arline had given me. reminded me that she loves scrappy batik quilts. I had fun practicing it in different scales: large, medium and small enough to be considered stippling. I’ve done hours of meandering, but it has actually been a while since I stitched out this motif. “ A few days ago I posted a batik quilt from Katy that I finished. We definitely start with the basics here. ![]() ![]() ![]() Lake Anjikuni: How Did an Entire Village Disappear?.Lake Avernus Mythology, Oracles, and the Underworld.The plant would use the water to extract sodium carbonate and turn it into washing powder that could then be exported out of the country. Recently, a proposed soda ash plant is planning on developing on the shores of the lake. Some are looking to actively take advantage of the extreme alkaline nature of the lake. The area is not formally protected and so whilst there is a plan to mitigate any damages to the area, there is no legislation to enforce this. The salinity balance of the area has increased in recent years due to the logging projects taking place in Natron watersheds as well as the planned hydroelectric power plant that is going to be placed on the river feeding Lake Natron. However, this does not mean that the area is not under threat. There exists some herding and seasonal cultivation. The area surrounding the lake is not inhabited by people. Salt-loving microorganisms can thrive in areas like these, forming a blue-green algae which add to the mysticism of the lake. Dare You Enter the Ploutonion? Gateway to the Underworld at Hierapolisĭespite the high alkaline levels of the lake, there are still some naturally occurring flora.The Secret of Lake Nyos: How Did 1,800 People Die Overnight?.It can burn the skin and eyes of animals that are not acclimatized to it. To put this into perspective the scale only goes from 0 (acidic) to 14 (alkaline), with both extremes being highly hazardous. The PH of the lake thus rises to that greater of 12, similar to that of alkaline bleach or caustic lye. This leaves behind Natron and trona: chemically sodium carbonate decahydrate and sodium sesquicarbonate dihydrate respectively. The highly alkaline water of Lake Natron often appears pink, or at other times blue-green due to extremophile algae blooms (NASA / Public Domain )ĭue to the temperatures getting so high and the lack of rainfall, there are high levels of evaporation. The lake is less than three meters (10 feet) deep and has a varying width depending on the water level. This river rises in Central Kenya and because of this, the water is filled with minerals and is surrounded by hot springs. The lake itself is fed mostly by the Ewaso Ng’iro River. Brandt recorded these in his photos, but it still does not answer why? Here is an explanation. It sounds like something out of an ancient Greek epic, but this place truly exists and does actually turn the wildlife around it to stone. ![]() He discovered the lake as a serene place but noticed that all of the creatures surrounding the water were petrified: they had turned to stone. However, it did not come onto the international scene until photographer, Nick Brandt, recorded it for his book on the disappearing wildlife of East Africa. Lake Natron has been recognized as a site wetland of international significance. Another identifier for it is that it is situated in the Gregory Rift which is itself part of the Eastern arm of the East African Rift caused by tectonic plate movement. It is found more specifically, in the Ngorongoro District of the Arusha Region in Tanzania. Lake Natron is an alkaline saltwater lake found in Tanzania. ![]() ![]() ![]() Plot of the sequenceĮ) Consider the 2-tuple sequence in. Here, each natural is mapped on itself.ĭ) Consider, that can also be written as. The range of the function only comprises two real figures. Plot of forī) Let us now consider the sequence that can be denoted by. Sequences are, basically, countably many ( – or higher-dimensional) vectors arranged in an ordered set that may or may not exhibit certain patterns.Ī) The sequence can be written as and is nothing but a function defined by. Latter concept is very closely related to continuity at a point. We need to distinguish this from functions that map sequences to corresponding function values. Note that a sequence can be considered as a function with domain. Property holds for almost all terms of if there is some such that is true for infinitely many of the terms with. ![]() Let be a -tuple sequence in equipped with property. Note that latter definition is simply a generalization since number sequences are, of course, -tuple sequences with. Sequences in, are called real tuple sequences. ![]() Sequences in are called real number sequences. The elements of are called terms of the sequence. If the metric is not specified, we assume that the standard Euclidean metric is assigned.Ī sequence in is a function from to by assigning a value to each natural number. We thereby restrict ourselves to the basics of limits. In this section, we apply our knowledge about metrics, open and closed sets to limits. ![]() ![]() ![]() If you do feel comfortable attending a school dance, play it safe. You won’t enjoy a dance where you aren’t comfortable. Set up your own party where you can control the environment. Participating in appropriate activities, or even planning your own, will help you find good friends who are more likely to share your standards. You don’t have to lower your standards to be part of the social scene. ![]() Impressing your friends is far less important than impressing the Lord. If the Spirit won’t be at the dance, you shouldn’t be there either. Without Him, it’s much harder to withstand temptation. Note the emphasis on keeping the Holy Ghost. Young men should also maintain modesty in their appearance” ( For the Strength of Youth, 15–16). Young women should wear clothing that covers the shoulder and avoid clothing that is low-cut in the front or the back. … Immodest clothing includes short shorts and skirts, tight clothing, shirts that do not cover the stomach, and other revealing attire. … Plan and attend dances where dress, grooming, lighting, lyrics, and music contribute to a wholesome atmosphere where the Spirit of the Lord may be present” ( For the Strength of Youth, 21).ĭress: “When you are well groomed and modestly dressed, you invite the companionship of the Spirit. Music: “Don’t listen to music that drives away the Spirit, encourages immorality, glorifies violence, uses foul or offensive language, or promotes Satanism or other evil practices” ( For the Strength of Youth, 20).ĭancing: “When dancing, avoid full body contact with your partner. Inappropriate dancing can stir unworthy sexual thoughts and feelings, which could lead to more unworthy actions.Ĭhurch leaders have been very specific about what is and isn’t acceptable to the Lord. Inappropriate music can drive away the Spirit and lower our defenses. In this case, the Spirit could be trying to tell you that the music, the dress, or the way people dance is inappropriate and could lead to problems. ![]() It’s often a warning from the Holy Ghost that something is wrong. No matter what the activity, any time you are uncomfortable about something, don’t ignore that feeling. Inappropriate dancing is easier to avoid if you’re familiar with the basics of appropriate dance styles.Īttend Church-sponsored dances, or plan activities where you and your friends can feel the Spirit. They could be a warning from the Holy Ghost.ĭon’t go to or stay at a dance where the Holy Ghost is not welcome.įollow the inspired guidelines in For the Strength of Youth. What should I do?ĭon’t ignore uncomfortable feelings. No official opening date has been announced for other locations, and as stay-at-home order restrictions vary, some states may open sooner than others.Sometimes at school dances I feel uncomfortable with some of the music and the way some people dress and dance. Please check with your local store for its latest operating hours before visiting. Ross Stores Openīelow is a full list of the Ross Dress for Less stores open as of May 15, according to the company's website. Ross is providing personal protective equipment to its associates, providing them with daily health checks and has installed plexiglass shields at registers. Additionally, Ross is providing contactless payment options and is encouraging all customers to wear face coverings. The store chain is limiting the number of customers permitted into the store, is encouraging social distancing, and has implemented one-way aisles. Amazon, Netflix and Facebook Market Caps Have Surged in Pandemic Crisis.How to Get Free Fries at Mcdonald's Every Friday Until the End of June. ![]() ![]() ![]() You can also upload and share your favorite Deus Ex: Mankind Divided wallpapers. I hope that with the presence of this story, Eidos Montreal gives us all a pretty solid story bridge to connect the adventure saga of Adam Jensen with two classic Deus Ex game series before. Tons of awesome Deus Ex: Mankind Divided wallpapers to download for free. Especially now coupled with the increasing number of advanced capabilities that are owned by Jensen in the face of enemies, ranging from nano-tech shield that covered his body, hidden blades that can be thrown towards the opponent, as well as an electric trouser spikes that very useful to paralyze the enemy without causing loss of life.Īnother interesting part in this Deus Ex: Mankind Divided is we will also be presenting the story of how the secret Illuminati organization plays an important role in human evolution behind cybernetics. ![]() ![]() on base M1 Max at 3440x1440p ultrawide display redditads Promoted. Hope to be back to watch Adam Jensen with action to defeat terrorists tech cybernetics makes me even more curious about the Deus Ex: Mankind Divided. Trigger 2 Deus Ex Mankind Divided Dirt 4 Fortnite GTA SA & VC League of Legends. Jensen is back! Yep, from some cyberpunk game nuances that announcement I had seen in previous years, I firmly choose Deus Ex: Mankind Divided as the only one of the most futuristic game I want to try in 2016. Here you can download the Best Deus Ex Mankind Divided Backgrounds images For Desktop, PC, iPhone & mobile phones for free. ![]() ![]() ![]() ![]() When using a search engine such as Google, Bing or Yahoo check the safe search settings where you can exclude adult content sites from your search results Īsk your internet service provider if they offer additional filters īe responsible, know what your children are doing online. Use family filters of your operating systems and/or browsers Other steps you can take to protect your children are: More information about the RTA Label and compatible services can be found here. Parental tools that are compatible with the RTA label will block access to this site. We use the "Restricted To Adults" (RTA) website label to better enable parental filtering. 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The next thing to do is to start a managed PostgreSQL database at AWS. rw-r-r- 1 jeffwang wheel 60B 29 May 14: 31 pip-selfcheck.jsonĭrwxr-xr-x 13 jeffwang wheel 442B 29 May 14: 32 psycopg2 # deactivate # mv lib/python2.7/site-packages/py4j /ĭownload psycopg2 # copy psycopg2 to your project root directory # git clone https: ///alexcasalboni/awslambda-psycopg2.git # cp -r awslambda-psycopg/psycopg2 / # ls -lĭrwxr-xr-x 6 jeffwang wheel 204B 29 May 14: 32 awslambda-psycopg2ĭrwxr-xr-x 16 jeffwang wheel 544B 29 May 14: 31 binĭrwxr-xr-x 3 jeffwang wheel 102B 29 May 14: 31 includeĭrwxr-xr-x 3 jeffwang wheel 102B 29 May 14: 31 lib (lambda_package) # ls -ld lib/python2.7/site-packages/py4jĭrwxr-xr-x 23 jeffwang wheel 782 29 May 14: 16 lib/python2. New python executable in / private/tmp/lambda_postgres/bin/python # cd /tmp/ # virtualenv lambda_postgres install py4j if you need it as dependency However, it doesn't work for psycopg2, lucky that you can use this pre-built psycopg2 library to connect to PostgreSQL. ![]() The easiest way to do this was to just use the Python virtualenv functionality to get required library ready. When using Python libraries that Lambda does not natively provide, you'll need to add them to the Lambda deployment package. This blog post addresses how to access to PostgreSQL and provides the code, including scripts for some of the steps described in the tutorial.įirst of all, let's talk about the dependencies. AWS provides a tutorial on how to access MySQL databases from a python Lambda function, but we're heavily using PostgreSQL.
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