Conversation skills are very important and each conversation starts with a greeting. These greetings are mostly verbal. People exchange greetings everyday regardless of culture, age, gender and country. But in a situation, choosing a better greeting will show your improved communication skill and helps to have a good impression.
A greeting is a simple way of saying hello to someone. If two people of the same community are greeting each other, the process will be easy compared to people from different backgrounds greeting each other. Greeting a person means you are initiating a conversation with the person and It is important to be able to select the appropriate greeting for the situation. English language has different ways of greeting people. But greetings can be broadly classified in two sections of formal and informal greeting.
formal greeting
As we know, formal greetings are used in a formal conversation like in a business meeting or meeting a important person. These are also used while addressing the audience of formal functions like conferences. We use some of the formal greetings everyday. Good morning/afternoon/evening are used so frequently. These work as replacement for the word Hello. How do you do? is a old greeting but used in very formal situations. How are you doing? is the another form of the greeting. How is it going?, Good to see you, Its an honor to meet you are some of the other formal greetings.
informal greeting
This type has more number of greetings than the former type for obvious reasons because people have more informal conversations than formal ones. And also people face informal situations everyday. Hi, the word which is kind of informal version of the word Hello, widely used by everyone. We here this word very frequently. Hiya is the another form of the word Hi, mostly used in UK. Hey is another greeting which I feel is very upbeat. sup? is more commonly used in USA, which is the slang term for the word what’s up. Yo is the word mostly used because of its light heart feel. How’s life? is the informal way of asking how are you?. Howdy and how is everything? are also in the category.
How glorious a greeting the sun gives the mountains!
-John Muir
why should i greet?
Why should I greet? Can`t I start a conversation without greeting? well, you can. But that will be weird. Just randomly starting conversations from nowhere will introduce confusions. To create a friendly environment you should choose a good greeting. It is a fact that greeting is also a gentleman and ladies gesture. A greeting can turn a stranger into a friend. And greeting also help to maintain relations. If a person refuses to greet the other, for some reason we all know that they are not in good terms. Greeting is a part of courtesy. It will help to show that you respect the person. When you greet someone you are acknowledging their presence and this will make the other person feel good.
Not for all other reasons, just greet to be good person!
Atmanirbhar, A word that entered every Indian’s vocabulary by the end of the year 2020. This gave a hype to use made in India products. people started to check for the made in India label. Now the era is of brands. Everybody wish to wear top brand accessories and cloths and drive a branded car. How can someone fulfil this desire while being Atmanirbhar? There are some brands which represent India and are listed at top. World has many brands, which appear as foreign brand by their names but are Indian.
The golden old times had brands like Parle-G, Vadilal, Godrej etc. The new era is dominated by these brands.
the royal enfield
As the name suggests, the brand is truly royal. It is an Indian multinational company. The headquarters is in Chennai, Tamil nadu. The brand was originally owned by a British company Enfield Cycle and was stared in 1893. In 1994 an Indian company Eicher Motors bought it and renamed it as Royal Enfield India. The brand is special and admired for its retro charm and the thumpy sound. The fuel tank is hand painted. The bike brand is known for its affordability. The bikes price starts at rupees 1.34 lakh and most expensive model is of 3.13 lakh. And it is not complex and easy to repair. Owning a Royal Enfield has been a matter of pride.
a Royal Enfield bike
van heusen india
It is a clothing band. The brand is under PVH corporation which is founded in 1889 and named after a Dutch immigrant john manning van heusen. The Indian section of this brand is owned by Aditya Birla fashion and retail limited. The company calls itself to be a fashion powerhouse. Aditya Birla group has a network of 3,212 stores across the country. Aditya Birla fashion and retail limited is the first billion dollar fashion house of India.
peter england
This brand is also a clothing brand. In 1889 the brand was founded in Londonderry of Ireland. The purpose of establishment was to provide khaki trousers to the British soldiers. The Brand entered India in 1997. In 2000 Aditya Birla group owned this brand. The headquarter is in Bangalore, Karnataka. The brand is the top men’s wear brand and has huge market. The customer base is estimated to be 4 million people. The brands target customers are the corporate employees. The brand offers collection of denims, festive wear, Indian kurtas, accessories etc.
lakme
The brand offers beauty products like cosmetics, skincare products and beauty saloons. It is India’s first cosmetic brand. It is the first to introduce makeup to Indian women and its been more than 50 years for the company for being a beauty brand. The main Idea of establishing a makeup brand of India was of prime minister Jawaharlal Nehru and He asked JRD Tata to execute this. The brand was named after a French opera coincidently which was derived from the name of the goddess Laxmi. Now also the brand tops in the popularity list.
jaguar
This brand is also stared as a British company founded by William Lyons. But now it is owned by Tata motors from 2008. The models are still manufactured in UK and headquarters is in Whitley Coventry, England. The car is one of the luxury vehicle. The cars are very much classy and show a great performance. The car price starts at 46.64 lakh.
these represent some of the success stories of Brands. There are many more brands too in the market who represent India internationally. These are the examples that India can do a great job in establishing brands and can lead the world.
Not everyday is a perfect day. Not everything will be perfect as you think. One day will be the best day, you accomplish all your targets and will have a happy ending. Another day will be worst, every plan fails and every second a new problem arises. What do you do if your day is going rough? How you handle yourself if you get angry and irritated by everything that’s going around. You can only wish for a restart button. Better thing is to try to handle everything with peace even though you are loosing it. Dragging yourself towards positivity when life is trying to push you back, will be a good strategy to follow for your own good. You can try these things if you are having a unpleasant day.
go for a walk
To get things out of your head, you can choose a lonely walk. Just walk by a roadside or in a park, whatever is good for you. Just get out of the place which is making you feel unpleasant. If you can, just go for a picnic. watching the outside world will make you realize that you are not the only one with struggles. You may get inspired by some stranger or the busy world, will take out the problem from your head.
just breath in
The day may get hectic and bring you discomfort. When you feel as if you are inside a trap, sit back and try to relax. Try to concentrate on your breathing, may be some pranayama, and take a deep breath. Concentrating on your breath relaxes you and shifts your attention from the tension. This may be is a very short term solution, but this will help you rethink and think better.
get a treat for yourself
Why to have treat only when you are happy. Get a treat to make yourself happy. Grab some coffee or get a pastry or a cake. Even you can bake for yourself. Make your favorite drink or visit your favorite restaurant.
just write it out
What’s bothering you all day? let that flow out through your words inside a journal. Write about the whole day. Write about all the reasons you think of, for the bad mood. Write about all your feelings. Let them be stay inside a book rather be inside your head. This will help you have a better perspective about the things. You will get to analyze what went wrong and what you should do now. It will help you take better decisions.
let music takeover you
If you are a person who loves music, what is better to deal with the bad day other than music! Just put your headphones on and let the world be on mute. Or just sing for yourself. Play any instrument if you can. Sing as if nobody around you. Dance on your favorite song. Listen to all motivational songs and cheer yourself up.
talk to the people you love
Why do you have bestfriends! call them. Talk to your buddy who will complain along with you about the bad life. Talk and laugh through your bad fortune. Or they will help you get out of the problem. Talk to your family. They may not have a best solution ready in hand, but talking to them will make you feel lighter.
trust you hobby
Your hobby will be a best partner. Just read a book or cook. Clean your house or draw a bird. Watch a movie or a fun Vedio. They will help you get out of bad mood.
At last, we all know nothing stays forever. Then a small problem should not be affecting you too much. Be happy for what you have. Be grateful and graceful. Remember a non living thing will never get problems, only living things do. Try to solve the problem and find out what caused it if you can. Just let a day be a day, not more than that.
Pollution from plastics have always ranked in the top for being a global problem. Now microplastic pollution is joining the club. Microplastics, as the name suggests are the minute particles of plastic. The size of a particle is less than 5mm. They occur from the larger plastics which degrades into small pieces as expected, they are also added as exfoliants to beauty and health products. Microbeads which are intentionally designed to be small can be added to this list of sources. Microplastic fragments are also found in single use plastic bottles and everyday usage plastic products like containers also one of the sources. As the macroplastic waste is omnipresent but prominent in marine bodies, microplastic also is a major pollutant of the oceans and large lakes. They get accumulated in soil as well.
Microplastics is a quite new to the pollutants list. But they are a serious threat as they can not be removed by water filtration systems. Aquatic life and birds will feed this microplastics mistaking them as food. There is no complete information available about the pollution because of less research in the area. But slowly the research is increasing in the field.
hazards of microplastics
Microplastics are made of polypropylene, polystyrene and polyethylene. UV light fragments large plastic litter into micro and nanoparticles of plastic. As mentioned above, the capacity of the to microplastics escape the filtration process poses a serious threat. We all know plastic can not be digested. If these microparticles enter the body they may get accumulated. Because of their small size they might posses the capacity to pass through cells and tissues. Their segregation in aquatic animals will be a threat indirectly to humans because we feed on them. It is estimated that humans consume 11,000 microplastic particles per annum.
If these microplastics enter cells, they may cause irritation as they are foreign bodies. They are chemically toxic to the body as well. But it is the biggest threat to marine animals. They affect the reproducing capacity of the marine animals. The number of larvae were less and size of the offspring was small. They got physical inabilities, problems in swimming. They block gastrointestinal tracts of the animals.
some solutions to reduce microplastic pollution
The main solution is the 3R, reuse reduce and recycle. Any pollution related to plastic can be reduced if we reduce the usage of the plastic. Mainly the single usage plastics should be reduced. Products containing microbeads should be avoided. people should be aware about the problems and should support bans on plastic. Conducting beach cleanups will reduce the amount of plastic that reaches the ocean. Ocean cleanup projects will also do maximum help. Finding the major sources of the problem and starting to solve the problem at its origin. People should try to have zero waste life, at least mini waste life so that there will be less contributions towards pollution. Taking the help of technologies to check the pollution and developing perfect filter systems which will filter off 100% microplastics.
Developing and Managing a business is called Entrepreneurship. The goal of the business is to gain profit. The entrepreneur should be innovative enough to make his/her business become a success. He/She should be having qualities of a good leader to execute the team work efficiently. This journey also comes with many risks.
Entrepreneurship includes start-ups and small business. Entrepreneurship creates jobs and helps in developing economy. Entrepreneurship does not have a specific path to follow. The path differs to for every aspiring entrepreneur according to their goals and their present conditions.
India has seen many of such successful entrepreneurs from a very long period. Here are some of the entrepreneurs of the recent times who managed to swim through the ocean and grab the trophy of success:
RITESH AGARWAL (OYO ROOMS) : Ritesh Agarwal, founder of OYO Rooms was born in Odisha. He qualified the Thiel fellowship which was for entrepreneurs of age below 20. Ritesh founded OYO-On your own hotels and homes in 2013 and at the age of 22 he became a millionaire. The concept of OYO was inspired by Airbnb, a US based company. OYO headquarters is in Gurugram and the company has expanded to Malaysia and USA and 80 other countries.
SHRADHA SHARMA ( YOUR STORY) : Your story was started in 2008 by Shradha Sharma. She Used to work at CNBC TV18 as a journalist before she decided to take this venture of start-up. Your story publishes stories of success of different people through their blog. The blog is published in 12 Indian languages. Now the net worth of the company is estimated to be $678K. More than 40,000 success stories have been published in the blog and has more than 10 million readers per month.
BHAVISH AGARWAL ( OLA CABS) : Bhavish Agarwal was born in Punjab. He was a student of IIT Bombay and started his career by working in Microsoft. A Bad experience during one of his rented drive, gave him Idea of starting the car renting company. Ola cabs stared partnering with taxi drivers. They gave the comfort of booking the cars through mobile phones through the app to the customer. They also started partnering with auto drivers as well. Now the Net worth of the company is estimated to be $6.5 billion. Now Ola is renting e-bikes which aims bring revolution.
KUNAL SHAH ( CRED) : CRED was started in 2018 by Kunal shah, Who is also known for starting the company freecharge. CRED is a app mostly for mobiles which helps the members to manage their credit cards in one place. Kunal Shah is a founder of tech company without engineering background . The company got funding before its execution. And it has a huge market as now.
The opportunities for an entrepreneur in India is very high and still growing. India is considered as a good investment destination. A report from pricwwaterhouseCoppers says that 2219 multinational companies emerge from India till 2024. A favorable environment for the business persons is developing in India. Along with government programs, private funds are also increasing in India and hopes to see much more successful entrepreneurs in future.
One of the important part of your daily routine, which helps to do all other tasks of the day perfectly is a good sleep. Or we can say quality sleep. Every animals without any discrimination need sleep. It is as essential as food and water. Without sleep it becomes harder to concentrate on the tasks. It is basically essential to keep human being sane. Sleep is also important to functioning of brain. It also influences the communication of nerve cells. Many unwanted things your brain built during the day are removed while you are sleeping. Lack of sleep increases the chances of getting affected by different disorders.
how much a person sleep?
Need for sleep and pattern of sleep differ with age. A newborn sleeps almost 16-18 hours, while a grownup may sleep only for 8 hours. Even sleep pattern differs between individuals of same age group. But an average time is decided by surveys and studies. This not a prescription, but a result of a study. Average school student may need 9 hours sleep. Adults sleep for 7-8 hours. Older people normally sleep less. Children sleep very deep and their sleep will not get disturbed easily. But older people tend to get disturbed and awakened easily.
mechanism of sleep
Two things maintain your sleep mechanism. You may have heard of circadian rhythm. This directs different functions of the body like metabolism, body temperature, alertness, hormone release etc. This rhythm also controls sleep. This rhythm decides when you should be awake and when you should sleep. This rhythm makes you sleepy at night and makes you alert during the day time. This circadian rhythm gets synchronized with your surrounding environment. This may include your habits or weather around you like temperature or intensity of light. But they will work in the absence of these little information.
The other thing is the homeostasis. This keeps a track of your need of sleep. This works as a reminder telling your body to sleep at a certain time. This is the thing that maintains hoe intense your sleep is going to be. If you are deprived of sleep, this makes you sleep longer when you get to sleep.
There are many factors that influence your sleep mechanism. The medications if you are on any, your medical condition, The place where you sleep and your food habits. Exposure to light makes it difficult to sleep because some special cells in the eyes process the light and instructs the brain whether it is daytime or night. The Jet lag people face after a long flight is because of the disturbances in the circadian rhythm. people face problems when there is imbalance between the body clock and the actual clock.
some tips to sleep well
Try maximum to be in sync with the natural clock.
Try to sleep and getup everyday at same time.
Take care about your food habit and eat healthy.
Try to make your room completely dark while sleeping but be in bright light in the day time when you are fully awake.
Stay away from mobile or television at least 1 hour prior to your sleep.
Include exercise in your daily routine.
Avoid caffeine or nicotine as the sleep time is approaching near to you.
Be as much stress-less as you can.
Keep your room quiet.
a good sleep is everyone’s need and don’t allow your busy life to take a toll on your sleep. Sleep well and be healthy and be productive.
Latin word Variolae vaccinae is the origin of the word vaccine. In 1798 for the first time Edward Jenner developed first vaccine to prevent smallpox. Now vaccine is a biological preparation. It is produced from living organisms. And it will help to induce immunity or sometimes cure the disease. Vaccines can be administered orally or by injection or by nasal routes. Mostly vaccines are in liquid form.
there are types in vaccines
LIVE-ATTENUATED VACCINE: In this type, vaccine is prepared using the living microbes which cause the disease. In laboratories a culture of these organisms is grown and the isolated organisms are weakened or disabled. Even though the microbe is alive, it will loose the capacity to cause harm. The organisms can be disabled by culturing them in sub optimal conditions. These are relatively safe and produce strong response and create long memory. But these are very expensive to produce.
INACTIVATED VACCINE: Here the disease causing microbe is killed or we can say inactivated through various means. Treating with chemical agents or thermal treatment. These inactivated microbes are purified and formulated into vaccine. This type of vaccine are very safe but the memory created will be comparatively of shorter duration.
RECOMBINANT SUB-UNIT VACCINE: Here the microbe is genetically modified and their potential to cause harm is reduced or removed. Some of the components of the microbe can be prepared separately by genetic recombination. Like only a part of protein or DNA can be synthesized and formulated into vaccine.
TOXOID VACCINE: If the disease causing microbe is affecting because of the toxic substance that produces, the toxin can be isolated and purified through cultures of the microbe. And then this toxin can be treated chemically so that it will not cause any harm but will be enough to cause the immune reaction in the body. The inactivated toxin is formulated into the vaccine. This type of vaccine is easy to produce and is very safe. But these will also have shorter memory.
what dose a vaccine contains?
The vaccine is not only composed of the antigen in bulk. It contains some additional fluid also. They contain preservatives to have a good shelf life and to ensure sterility and check contamination. These preservatives will not be toxic at the concentration used. The may sometimes have saline or water. Vaccine may also contain adjuvants. An adjuvant is a substance which helps the vaccine to generate stronger immune response. You can say they make vaccines work better. Aluminum salt is a common example for adjuvant.
working of vaccines:
If you get infected, the body will show defense against the foreign substance and immune reaction would have been initiated and the person will get sick. The vaccine is the mimic of the disease causing microbe and will generate immune response without making the person sick. The mimics trigger the antibodies production in the body. Antibodies bind to these mimics and destroy them with the help of immune cells. This helps the immune system to quickly recognize the enemy if they enter again.
Vaccines have great impact on public health. They help to reduce human mortality. They prevent the entire population from the risk of infectious diseases. Many diseases were due to vaccination programs. Polio is an example to that. So everybody should get vaccinated to conquer the pandemic that we are currently facing.
“A person lives a single life, but a reader lives multiple lives”. A quote that inspired me to get into reading. How do you define reading? Well, Wikipedia defines it as “A process of taking in the sense or meaning of letters, symbols, etc., especially by sight or touch”. But is that all a habitual reader goes through? Obviously not. This is just a definition that describes the generalized view. If you call a bibliophile to describe reading, He or she may say ” Reading is a journey, an experience filled with all the emotions and knowledge”.
Reading is not only for experience, But there are many benefits of making reading a habit:
it empowers your brain
Many researches have shown that reading involves a complex process in your brain. There are complex networks in brain which strengthen through reading. It keeps you mentally stimulated. Reading is an exercise to your brain. And these exercises will make you smarter. Reading improves brains connectivity.
it gives new ideas
Reading helps in detecting patterns, solving puzzles and problems. You are actively thinking while reading. This will arise new ideas to the problems you were having trouble to solve or it may show a new approach to the same. You may get situations in life where references from the books you have read will guide you or solve your problem.
it helps you to write better
When you read a good book, which is well written and executed, brain absorbs that technique. reading multiple types will increase your skill. These skills you acquired while reading, that technique you appreciated when you noticed it will unknowingly show up in your writing. This will increase the quality of your writing.
it influences your world view
While reading you are thinking using the writers mind. He will provide a new view to a same situation. Good things that you accumulated during reading process will reflect in your opinions. They influence and improve the way you approach the world. It broadens your perspective and makes you question and reexamine your beliefs and judgements.
reading increases your knowledge
When you love a specific genre or a type of book, you effortlessly gain all the knowledge given within the book. This will make you smarter effortlessly. Books will have information about history, economics, science, culture, customs and what not. You will get all of these information without taking courses in colleges.
reading reduces stress
When you read a good book, it will help you reduce all your stress either from work or from personnel issues. Many researches have also proven the same. Reading can ease tension in your muscles. It is like a mini break but without taking a break!
reading improve vocabulary
Reading more and more will introduce you to more and more new words. Unknowingly these words make their way in your daily vocabulary improving your language skill. A person with good conversational skill is preferred everywhere and a good vocabulary will increase your confidence also. This will definitely help in having a good career.
If all these things are not motivating you to read, here is another fact. Bill gates, one of the worlds richest man takes a braked named “Think break” where he isolates from the other distractions of the world and just reads to have new ideas. He takes this break twice a year and you don’t need a proof to show how they end up.
You tube! One of the biggest social media platform, whose content is in the form of Vedio. This was first launched in February 2005. Now It hosts biggest content creators of on variety of content from arts to science. You tube has become one of the income sources option or we can say a career option now. There are many educators who found career in you tube. In this situation of pandemic, You tube educators have saved many students education.
You tube has now become a source of information for everything. It is the biggest search engine after google. being a science enthusiast i always watch Scientific you tube channels. There are many YouTube channels doing a great job in giving perfect information with beautiful illustrations and examples. But here are the some I think which are worth subscribing.
Vsause
One of the best you tube channel hosted by Michel David Stevens. He is an American educator The channel has scientific, psychological, Mathematical, philosophical Vedios. Channel is currently on 1.7 crore subscribers and 380 Vedios on the channel. The best thing about the channel is detailed research that is done on the topics presented. And also the host Michel Stevens steals your attention by his method of explanation. He makes the Vedio interesting by scratching your brain and increasing the curiosity. The series called “Mind field” which has 3 seasons is one of the best Vedio series I have watched. They have mind blowing experiments and explorations done by the host himself.
This channel is worth subscribing.
veritasium
Another you tube channel which has the best science Vedios. This channel is hosted by Derek Muller, who is Australian-Canadian science communicator, filmmaker. The channel now has 94.8 lakh subscribers and 313 Vedios. Derek, In his Vedios answers very simple questions in a way that you would never thought of having it. He conducts many street interviews about the topics or you may call it surveys to get the public mindset and information. In may of his Vedios he breaks many Myths around science and psychology.
The best things about the Veritasium channel are the experiments and the execution. The animations used to explain things are very cool to watch. And obviously the perfect information is what you always get.
The royal institution
This is the official you tube channel of the Royal institution situated in great Britain. It is the organization for scientific education and research founded very long back in 1799. The institution holds lectures on various science topics. Many famous scientists gave their lectures here. The you tube channel has the recorded Vedios of this lectures. The channel has 10.4 lakh subscribers and 925 Vedios.
What’s the best thing? The Vedios are genuine lectures from the scientists you admire! You get the whole lecture recorded and what’s better than that. You get to know about the new discoveries and advancements in detail. Vedios make you think more deeply about science. I think that’s more than enough to make you subscribe if you are a science geek.
lectures by walter lewin They will make you love physics
Who doesn’t know Walter Lewin and his love for physics. He is the former professor of physics at Massachusetts institute of technology. He has written a book called “For the love of Physics”. He is one of the best teachers you would ever get. His fun demonstrations of theories, and facts are loved by students around the world. The channel has 10.8 lakh subscribers. His lectures make you really fall in love with physics.
there are many more YouTube channels that provide quality science Vedios. PBS spacetime, Parth G, Periodic Vedios are some other to mention. But the above four channels are my personal favorite and I think are worth giving a try.
In the northern and southern pole, beautiful lights show in the sky, best seen at night. They are colorful and mesmerizing to watch. They are called aurora or polar lights. Auroras were first seen in 1791 in New England. The word Aurora is the name of a Roman goddess of dawn. These are mostly seen in high altitude regions that is around Arctic and Antarctic regions.
There are auroral zones between 10o to 20o from the geomagnetic poles. “Auroral oval” is the name given to the region which displays the aurora. The Aurora that appears in the region near to northern pole are called Aurora Borealis and the Aurora that appears in the region near to southern pole are called Aurora Australis.
how this colorful auroras are formed?
You may wonder to know that the reason behind this beautiful event, which mostly appears at night, is our very own star, The Sun. He is boiling and burning continuously since formation. The temperature of the sun at his surface is 5,505o C. But inside in the core of the sun, the temperature is 15 million degree Celsius. As the temperature fluctuates, some charged particles are thrown out of his outermost surface and travel outwards. The technical term for this is “The Solar Wind”. This wind reaches the earth and the charged particles strike with the atoms in the atmosphere. Because of this, excitation in the energy of the electrons occur and when they are returning to the original energy level, release photons which is the light we see. The earth`s magnetic field diverts these charged particles towards the poles. Hence these phenomena can only be seen in these areas.
How the light is of differnt colors?
Aurora of different colors are seen. Sometime they are green, blue and sometimes they are yellow or violet. The reason for the different colors are the atoms with which the charged particles colloid. Collision with Oxygen molecules caused yellow and green light. Collision with nitrogen caused blue, red and violet colors. the molecular nitrogen gives purple color but the atomic nitrogen gives blue.
Altitude also affects the colors produced. At a height of 150 miles green light will appear and above that red will appear. Blue lights appear up to 60 miles and above that purple and violet colors appear.
These auroras can be seen in other planets also. But the planet must be having its atmosphere and active magnetic field. In our solar system Jupiter, Saturn, Uranus and Neptune experience auroras.
The Aurora borealis is always present. But they can be seen when the sky and air are clear. September-October and March-April are the best time to watch these phenomena. NASA says after 2 days of sun spot activity these lights are brighter.
best places to watch aurora:
Darker the place better you can view the aurora. Choose a place away from light pollution and air pollution. Get a place with a larger view of open sky free of clouds. The places near to the Arctic circle are best. This may include Alaska, Iceland, Greenland Norway, Finland etc.
To capture this beauty you don’t need any expensive camera. A normal camera with a tripod will be more than enough for you. The Aurora Borealis appears and disappears very fast, hence you must be patient and quick enough to take a good picture of this beautiful event.
We are in the middle of a pandemic which is caused by a virus. Viruses are ultramicroscopic, disease causing entity of organic matter, It can replicate or multiply only in the presence of a living host cell. They are called as entity because they exhibit both living and non living characters and it is difficult to conclude them as any one.
history
Russian botanist Dimitri Ivanovskii reported the virus for the first time in 1892. He explained tobacco mosaic virus. In 1898 M. W. Beijerinek recognized that viruses were smaller than bacteria, and they can easily pass through bacterial filters. In the same year, Friedrich Loeffler and P. Frosch, in Germany demonstrated the cause of Foot and mouth disease in cattles are due to viruses. In 1900 Walter Reed et al. explained yellow fever disease in humans was due to viruses. And in1915 F. W. Twort in England discovered bacteriophages.
In 1935 W. M. Stanley isolated Tobacco mosaic virus and crystalized. He explained that virus also contain proteins. In 1936 Bawden and Pirie demonstrated viruses to be nucleoproteins, they are made up of Nucleic acids and proteins. The major development was determining the ultrastructure of TMV by x-ray diffraction which was accomplished by R. Franklin and A. kling. Discovery of cyanophages was done in 1963.
What are the general characters of a virus
They are very small, so small that even they are not visible under compound microscope. Their size varies from 20nm to 400nm.
they are obligate parasites, They multiply only in the presence of a living host cell.
Viruses do not contain any type of cells.
Like Bacteria, viruses can not be cultured in labs on a synthetic media.
Viruses are highly specific. While infecting they just do not infect randomly any cell. They find specific cells for them which varies from virus to virus. They are also specific to tissues, organ, organism and species.
Viruses can be inactivated by heat or chemicals.
Viruses also lack metabolism. They are totally dependent on the host cell.
Viruses undergo mutation very often.
Living characters shown by viruses:
Are viruses living? we don’t know. But they contain nucleic acids which we consider the basis of life. As every other organism they have definite form and size. They grow and reproduce in the host cell. They can infect the host cells and cause diseases. They show mutation and inherit their characters to their reproduced offspring. These call characters are shown by living organisms.
non living properties of viruses:
Even though they exhibit some of the living characters as mentioned above they lack cellular organizations like other organisms. This arises the biggest confusion. They behave like non living outside the host cell. Some of the viruses can be crystalized and stored in bottles and jars. And they lack metabolism which is the basic characteristic of a living organism.
how viruses are classified?
The types of virus based on the hosts they infect includes, Bacteriophages- Which infect bacteria, Cyanophages- which infect blue green algae, phytophaginae-which infect plants and the Zoophages- which infect animals.
a bacteriophage
The viruses are considered to be DNA virus if the nucleic acid present in them is DNA and RNA virus if the nucleic acid present is RNA.
No matter how they are classified or what are their features, viruses are unique and mostly dangerous to animals. Even though vaccinations can help, Avoiding exposure to them will be the best way to keep oneself safe.
communication plays a very important role in human life. It helps in the exchange of information and knowledge, it helps in developing relationships, the bonding on which the human life dwells itself. Conversations are key to language development. Ideas and thoughts also find a way to enhance through conversations. They make learning easier when combined with perfect facial and body expressions.
how do you define conversation skills?
A perfect conversation is the one which “serves the intention” and “transfers the information” perfectly. People may define it differently, But for the most part, conversation skills include ability to initiate, sustain and end a conversation. You may have the best information, but how you share, matters a lot. And also Engagement- an attempt to perfectly involve others in the conversation, is important.
“Conversation skills refer to a collective set of skills needed to communicate effectively with another person”. Better skills allow to understand and comprehend better to every person in the conversation.
The pandemic which hit the world very badly is forcefully making people to isolate themselves, replacing in person conversations to Vedio calls. Obviously there is a difference when you talk to a person when he is in front of you and when you talk through a screen. But rise in social media popularity did this before pandemic. Conversations have been changed to texting. These all are taking important conversation skills away from people. Clearly avoiding screen is not a solution, but maintaining a balance is very important.
ways to improve conversation skills
LISTEN ACTIVELY: Listening shows that we are in the person and the topic of conversation. Listening is as vital as speaking since a conversation involves sharing which needs both giving and receiving end. Practice active listening by paying attention, Asking questions to clarify confusions and repeating the message or its summary back to the speaker.
LOOK FOR NONVERBAL CUES: Non verbal communication has importance exactly as the words person chooses to do conversation. For example, consider body language. Try to have a good eye contact with the person in front of you. By saying a good eye contact I mean, the eye contact shouldn’t be making the person uncomfortable. Nodding your head to show your agreement or disagreement also helps. Keeping yourself in a position that makes you hear them correctly will also help. And if you are the speaker, make sure the message you are sending is consistent both verbally and non verbally.
HAVE EMPATHY: When you are listening to other person, try to put yourself in his/her shoes. Try to understand their point of view. Use statements which shows that you are understanding. For example ” I can understand your situation”. This will help to build trust. Learn to “agree to disagree”. Respect them even if you disagree. Be polite throughout the conversation.
PAY ATTENTION TOTHE DETAILS: A person with strong conversation skill will absorb more from the conversation than the average person just by noticing extra details. This will help you have more accuracy in the information. Noticing the accent and the motive in the conversation will help in long term.
OFFER INTRESTING INSIGHTS: People with good conversation skills frequently yell you things you didn’t know and find interesting. Increase your knowledge by reading books, magazines and listening to podcasts. Observe how they are choosing words or expressing them. Be Honest when you don’t know, that will not make you anything lesser.
TALK SLOWLY: A good conversationalist often act as they have abundance of time. Don’t hurry or cut others sentences. Take your time while speaking and be confident. Try to take a time before what you say to just reflect on it. be thoughtful.
USE RIGHT WORDS: A well ability to communicate has a lot to do with the words you choose. Bad choice of words will create misunderstandings. Constantly work on your vocabulary and practice communicating accurately.
A good communication skill will help you regardless of the field you are going to be in. Develop these skills as soon as possible and shine on!
People are mainly aware about the algae as seaweeds or algal blooms. They are the organisms with ability of photosynthesis and very much diverse community as well. But algae are important to man and their economic importance is manyfold. They are used as food, fodder and manure. They are also important in industrial field as well as agriculture.
there are 7 major types in algae
Chrysophytes
Euglenophytes
Pyrrophytes
Chlorophytes
Rhodophytes
Phaeophytes
Xanthophytes
these are the benificial roles of algae
Algae is a food source: In different parts of the world algae have been utilized as direct source of food. They are rich in proteins, carbohydrates, oils, vitamins and minerals hence used as a diet food. They possess minerals like Cu, Fe, Zn, Co, V, Mn and Cr. About 20 different seaweeds are used as food source. Nostoc,
Algae as fodder: Many seaweeds are as food for cattle, poultry and aquatic organisms. Sargassum is used as cattle feed in China. Laminaria and Fucus are also used for the same purpose. Seaweed meal increases the egg laying capacity of fowls. These eggs contain high amount of iodine and carotene.
Algae in agriculture: Algae are used as green manures in agriculture. Sargassum, Laminaria, Macrocystis and Gracilaria are the most commonly used ones. Seaweed manure increases the yield of barley, potato, coconut palms, citrus etc. Many blue green algae have the ability to fix the atmospheric nitrogen into the soil. So they can be used as biofertilizers. Saline and alkaline soils can be converted into productive ones by growing some blue-green algae on soil. Anabaena, Rivularia, Spirulina are used for this purpose.
Algae in Industries: In Industries many algae have been used as sources for the extraction of commercial products like agar-agar, diatomite, carrageenin and algin. Agar-agar is used as culture media for bacteria. It is also used as emulsifier in ice-cream, fruit jellies and dairy product preparation. Algin is used as painting pastes in textile industry and thickeners in cosmetics, pharmaceutical products etc. Carrageenin which is extracted from Chondrus crispus and Gigartina are used in food industry, textiles and leather industry. It is a remedy for cough.
Algae in sewage disposal: Sewage water contains organic and inorganic substances which makes it low in oxygen content. But sewage finds use in agricultural practice as they are rich in salts. To decrease the foul smell algae are used. Algae are used to decompose the organic and inorganic substances.
Algae and Research: Algae are used in the study of effects of pesticides, herbicides and UV light. They are used in the research for preparing biofuels.
Algae as pollution indicator: Some algae grow well in polluted water as they are more tolerant towards pollution. Growth of these algae indicates the pollution and its intensity. Scenedesmus indicates copper wastes and Ulothrix zonata indicates indicates paper mill wastes.
Though many algae are useful, there are harmful algae are also there. The development of water blooms is considered to be a bad effect of algae. There are some parasitic algae cause diseases in plants. Attachment of algae tp ship retards the speed of the ship. growth of algae on cloths are also seen and they ruin the cloth.
Pituitary gland is one of the most important endocrine glands. It secretes a number of hormones which control a wide range of body functions. Pituitary gland is situated just below the mid brain behind the optical chiasma and lies in the cavity of sphenoid bones called Sella turcica. It is about 10mm in diameter and average weight is 0.5-0.6g in males and 0.6-0.7g in females.
It has two lobes. The anterior lobe called adenohypophysis and the posterior lobe is called neurohypophysis.
Hormones secreted by the anterior lobe or adenohypophysis are:
Somatotrophic hormone: It is also called as growth hormone. It stimulates the body growth by influencing protein synthesis. Mobilization of fat from the adipose tissue and the free acids in the blood is accelerated by this hormone.
It also increases the intestinal absorption of calcium as well as its excretion. As it stimulates the growth of long bones and also the soft tissues, maintains retention of other minerals such as potassium, phosphate, sodium, magnesium and chloride.
Deficiency of this hormone in childhood retards growth and leads to dwarfism and over secretion causes gigantism.
Thyroid stimulating hormone: It mainly controls the activity of the thyroid gland. These hormones speedup oxidative energy releasing process, thus controlling the rate of metabolic activities and growth.
It also influences the release of thyroxine from the thyroid gland.
Hypersecretion of TSH shows that person has hypothyroidism and thyroid gland is underactive. Less amount of TSH in blood shows thyroid gland is producing too much thyroid hormone, and the condition is called hyperthyroidism.
Adrenocorticotropic hormone: It regulates the normal functioning of adrenal cortex and release of glucocorticoids and mineralocorticoids. It helps in the increase of the total protein synthesis and also causes the synthesis of steroid hormone from cholesterol.
Increased secretion of this hormone results in Addison disease, Cushing syndrome etc.
Follicle stimulating hormone: In females this hormone stimulates the growth and maturation of graafian follicles and prepares them for ovulation and the action of Luteinizing hormone and enhances the release of estrogen. Hence, we can say that this hormone is very active during menstrual cycle.
In males, it stimulates growth of seminal tubule and testicular growth and early stages of spermatogenesis, the process of generation of sperms.
High FSH level shows low chances of getting pregnant. In males shows damaged testicles. It may also indication of Klinefelter syndrome.
Luteinizing hormone: This hormone continues the action of follicle stimulating hormone and helps in maturation of graafian follicle and ovulation. This also involves in the development of corpus luteum. This hormone also stimulates the secretion of estrogen and progesterone.
In males, this hormone stimulates the interstitial cells of the testes to secrete testosterone thereby maintains the spermatogenesis.
Increased LH secretion may cause irregularities in menstruation and troubles to get pregnant.
Prolactin or Lactogenic hormone: This hormone promotes the growth of mammary glands during pregnancy. This hormone also helps in milk secretion after delivery of the baby. Prolactin is secreted in high amount if a female is pregnant or a new mother.
Melanocyte stimulating hormone: It influences the melanin secretion and deposition on human skin by acting on melanocytes. Increased levels of the hormone mean increased melanin deposition.
Hormones secreted by posterior lobe or neurohypophysis are,
Oxytocin: This hormone controls the contraction of muscles of the uterus during labor. It also helps in stimulation of lactation after child-birth. This is also a chemical messenger to the brain and controls the reproductive system.
Vasopressin: this hormone has a major role in controlling the water balance of the body. This increases the reabsorption of water from the distal tubules of nephron. If there is failure in secretion of enough amount of this hormone, large amount of dilute urine which causes excess amount of thirst. This condition is called diabetes insipidus.
vitamins are the substances that you need in your diet in small amounts to perform biological functions for maintaining normal health. During evolution the capacity to synthesis most of the vitamins was lost and hence humans need to obtain them from diet.
vitamins are widespread in occurrence including plants and animals. Normally all foodstuffs contain more than one vitamin in them. Plants can synthesis almost all vitamins but animals can synthesis only few. Human body can synthesis vitamin-A from its precursor carotene and vitamin-D from UV light irradiation of ergosterol and 7- dehydrocholesterol. All cells of the body store vitamins to some extent and they carryout functions in very low concentration hence daily requirement is low. They are most effective when taken orally. Now vitamins are also synthesized artificially.
members of vitamin b complex
Vitamin B complex are water soluble vitamins. There are 8 members in the vitamin B complex family. They play crucial role in red blood cells synthesis. Even though the members are chemically distinct, they exist together in the same food.
VITAMINE B1 ( THIAMINE ):
It is a sulfur containing compound and partially heat labile. Presence of pyrimidine ring and thiazole ring joined is the prominent feature.
Vitamin B1 is found in outer coat of rice and wheat. Yeast is also one of the good source. Whole cereals, pulses, oil seeds and nuts are also one of the source.
It is essential for carbohydrate metabolism and convert them into energy. Thiamine pyrophosphate is the prosthetic group of enzyme participated in oxidative decarboxylation of keto acids. It is used in functions of muscle contraction and relaxation and nerve signal conduction.
deficiency in adults results in beriberi. The main symptom of this is insomnia. In Wet beriberi cardiovascular system is affected and in Dry beriberi Central nervous system is affected. In infants it causes infantile beriberi.
VITAMIN B2 ( RIBOFLAVIN) : Riboflavin contains isoalloxazine ring and rabitol- a sugar alcohol in its structure. It is stable to heat and acidic pH.
It helps in releasing energy from proteins. It acts as prosthetic groups in many enzymes. It is important in electron transport chain, acts as antioxidant. It is also helpful in vision improvement. treatment of acne, muscle cramps involves vitamin B2.
green leafy vegetables are the main source of this. pulses, egg, milk also contain this vitamin. Fruits and some vegetables contain it in moderate amount.
Deficiency of vitamin B2 in humans causes oral facial and ocular lesions. It also caused hyperemia, hair loss and reproductive problems. In experimental animals deficiency resulted in growth retardation, cataract and corneal problems.
VITAMIN B3 (NIACIN): Niacin is the derivative of two pyridine derivatives called nicotinic acid and nicotinamide. It is stable to heat and alkaline pH.
This is found in legumes ,yeast, fish, whole grains and meat are also good sources.
This also plays a role in converting carbohydrates into glucose. It also functions in fat metabolism. And functioning of nervous system.
deficiency causes pellagra. In this disorder skin, gastrointestinal tract and nervous system are affected. Glossitis and stomatitis are also symptoms of niacin deficiency.
VITAMIN B5 ( PANTOTHENIC ACID): Chemically it is amide of beta-alanine and dihydroxy dimethyl butyric acid. It is unstable to acid or alkali but stable to heat.
cereals, legumes, meat, liver, milk and eggs are the good source f vitamin B5.
It has a role in breakdown of fats and carbohydrates. It is important in red blood cell formation. It is a component of coenzyme A. It is required for the synthesis of phosphopantotheine of fatty acid synthase complex.
its deficiency is rare in humans. But sometimes its deficiency symptoms may include insomnia, tiredness depression vomiting and pain in stomach area.
VITAMIN B6 (PYRIDOXINE): Certain compounds derived from pyridine like pyridoxine, pyridoxal and pyridoxamine show vitamin B6 activity. These are stable to heat but sensitive to light and alkali.
pulses, liver, whole grains and yeast contain adequate amount of this vitamin. Leafy vegetables, milk and eggs also contain moderate amount.
Deficiency in children causes epileptic form convolutions. Growth retardation problems also seen. Skin lesions are found. Microlytic hypochromic anemia is also a deficiency symptom.
VITAMIN B7 (BIOTIN): It is a sulfur containing vitamin and consists of imidazole ring. It is stable to heat but sensitive to alkaline medium.
Green leafy vegetables like cabbage, spinach, mint leaves, pulses, eggs and liver are good sources. Milk and cereals also contain adequate amount.
Biotin is the prosthetic group of enzymes like pyruvate carboxylase, acetyl coA carboxylase etc. It is involved in carrying of carbon dioxide in carboxylation reduction. It promotes perfect functioning of nervous system. It is important for liver metabolism. Helps in strengthening of hair and nails.
deficiency causes dermities , depression, muscular pain and anemia.
VITAMIN B9 (FOLIC ACID): It consists of pteridine nucleus, para aminobenzoic acid and glutamate. It is sensitive to light and acid. But it is stable to heat.
This is found in green leafy vegetables, Bengal gram, black gram and eggs, Coconut contains adequate amount of folic acid.
It works with vitamin C in production of new proteins. It also helps in synthesis of DNA. It also acts as carrier of carbon units.
In humans deficiency causes megaloblastic anemia, particularly in pregnant women. Bone marrow and intestinal cells are affected. Leucopenia, diarrhea and weakness are also some of the symptoms.
VITAMIN B12 ( CYANOCOBALAMINE) : Cyanocobalamine is made made of tetrapyrrole ring system known as corrin ring with a central cobalt atom.
Animal sources like kidney, liver, brain, fish and eggs are the good source.
It helps in making DNA and blood cells. helps in the maintenance of body’s nervous system.
weakness shortness of breath is of common symptoms of deficiency. It can also cause anemia and nerve problems.
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