Wednesday, July 10, 2024

Now get many ebooks for FREE at

A few months back I launched to sell my ebooks, software, and course. I am offering a 75% affiliate commission for promoting this website. Though many people joined as affiliates, they are mostly inactive. So, I was exploring different ways to promote the website and finally decided to introduce a free offer. Right now you can freely download my ebooks from Rajamanickam.Com website. Though I set all ebooks as Free now, I am planning to set them Free on a rotational basis so that my free offer won't affect the affiliates.

Use this Free offer now before it ends and tell about this free offer to your friends also. Let me know if you face any difficulty in downloading the ebooks. If you like the ebooks, add your Rating/Review.

You can hire me as a freelancer for an affordable charge to do PHP web development, software testing, and to explain about online earning.

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Monday, July 8, 2024

What is your opinion about UpWork?

For the past few weeks, I have been actively searching for Freelance Work.  I have good experience in PHP web development and Software Testing as explained here. As I have a significant number of LinkedIn connections, initially I thought I could find freelance work through LinkedIn. But practically LinkedIn didn't help me much to get freelance work though I posted on various groups. Even I tried contacting Connections individually. Then I tried finding freelance work using Reddit. I actively watched various subreddits related to freelance work. I got a few projects through Reddit. But they were very small projects requiring 1 or 2 hours only. However, I had to spend many number of unpaid hours learning the requirement details for those projects. Therefore it was very ineffective. So I thought of using the freelancing site UpWork. But I came to know that I need to spend significant money on getting projects there. Before spending money with UpWork I would like to know whether it is really worth spending money with UpWork, particularly as a beginner without reviews/ratings. Share your UpWork experience through the comments section.

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Monday, June 17, 2024

Updates about my Freelance work

As specified in my previous blog post, I am actively looking for freelance work. I can do PHP Web development and software Testing effectively. I have 25 years of experience in IT. Check my LinkedIn profile here.

Previously I used to accept payment after completing the tasks. Hereafter I have decided to take a project that pays upfront or pays on a daily basis. I made this decision after facing difficulty in collecting the payment after completing the work.

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Wednesday, May 15, 2024

Emerging Medical Technologies

 Read below a chapter from my Emerging Technologies ebook.

The healthcare industry has witnessed significant growth in recent times because of developments happening in various other fields. Irrespective of technological developments, we cannot underestimate the need to follow a proper healthy diet, avoid junk food, perform suitable exercises, maintain a positive mindset, and obtain good sleep to lead a healthy life. And obviously, technology is helping us to follow these things in a better manner. For example, Smartwatches and fitness trackers help us to know the health of our inner organs up to some level which can help us to take some preventive measures to avoid any potential health issues. And various mobile apps are helping to do yoga and meditation. And, even they help to do eye exercises. At the same time over usage of smartphones causes eye issues and posture issues. We have to agree that technology is a double-edged sword that could help us while having the ability to harm us. We need to control and use the technology in appropriate ways.

Advancements happening in other fields push the healthcare industry further. For example, the fast growth of Artificial Intelligence (AI) enabled the discovery of Halicin, a powerful new antibiotic compound that killed many of the world’s most problematic disease-causing bacteria, including some strains that are resistant to all known antibiotics. The growth of AI itself is accelerated by recent advancements in computing systems. Soon, the computing power will be increased further with the help of Nanotechnology, Quantum Computing, Neuromorphic computing, and optical computing systems. The chain of developments will lead to fast growth in various fields including the medical field in the coming days.

AI tool ChatGPT was about 72 percent accurate in overall clinical decision-making, from coming up with possible diagnoses to making final diagnoses and care management decisions. An AI System “BioMind” beats Doctors in diagnosing brain tumors.

An artificial intelligence system that can analyze eye scans taken during a routine visit to an optician or eye clinic and identify patients at a high risk of a heart attack.

Technological advancements enable scientists to explore new concepts in healthcare. For example, researchers developed “Inverse vaccine” which shows the potential to treat multiple sclerosis and other autoimmune diseases. Unlike traditional vaccines that stimulate the immune system to recognize and attack harmful invaders, this inverse vaccine works by erasing the immune system’s memory of a specific molecule.

Scientists are working on creating robots (e.g Anthrobot) from human cells too as they believe these biological robots can perform therapeutic work without the risk of triggering an immune response or requiring immunosuppressants. In the coming days, they could be used for clearing plaque buildup in the arteries of atherosclerosis patients, repairing spinal cord or retinal nerve damage, recognizing bacteria or cancer cells, or delivering drugs to targeted tissues.

Immunotherapy research is showing the potential to extend the healthy lifespan of humans. They are aiming to target the root causes of chronic diseases rather than just addressing the symptoms.

Miniaturization of electronics allows ingestible sensors, cameras, and other medical devices. For example, this Ingestible device detects breathing depression in patients. Even, Ingestible medical devices can be broken down with light. This inflatable pill is embedded with a sensor that continuously tracks the stomach’s temperature for up to 30 days. If the pill needs to be removed from the stomach, a patient can drink a solution of calcium that triggers the pill to quickly shrink to its original size and pass safely out of the body. This ingestible “bacteria-on-a-chip” approach combines sensors made from living cells with ultra-low-power electronics that convert the bacterial response into a wireless signal that can be read by a smartphone. This Origami robot can unfold itself from a swallowed capsule and, steered by external magnetic fields, crawl across the stomach wall to remove a swallowed button battery or patch a wound.

Gene Therapy will play a significant role in redefining the healthcare industry shortly. Gene therapy aims to achieve a therapeutic effect by modifying the genes either in a patient’s own cells or in eggs or sperm. It can be used to treat a variety of diseases, including cancer, cystic fibrosis, and HIV/AIDS. The Nobel Prize-winning CRISPR Gene-editing technology is expected to significantly speed up gene therapy development and clinical translation as it is simpler, faster, and more precise than previous gene-editing tools. UK has already approved CRISPR gene therapy “Casgevy” to cure sickle-cell disease.

Apart from using CRISPR for treating diseases, scientists are using it to produce a Bull Calf designed to produce 75% Male Offspring.

CRISPR has been used to edit human genes within the body to address a blindness-causing gene mutation. China’s Scientist He Jiankui successfully edited the genes of Twins named Lulu and Nana so that they wouldn’t get affected by HIV which causes AIDS, and even their Brains unintentionally enhanced. CRISPR helps alleviate Depression and lowers Cholesterol. Scientists have created Low-Fat Pigs by editing their Genes with CRISPR.

Scientists have developed a gene therapy that was proven in mice to stimulate nerve regrowth across spinal cord injuries and guide nerves to reconnect to their natural targets to restore mobility.

Researchers in Sweden have developed a microscale device for implantation in the eye, which presents new opportunities for cell-based treatment of diabetes and other diseases.

Brain-computer interfaces (BCIs) are systems that can directly record and interpret brain activity, and then use this information to control external devices or software. This has a wide range of potential applications in medicine, like, restoring function to people with paralysis or other neuromuscular disorders, treating neurological disorders such as epilepsy, Parkinson’s disease, and Alzheimer’s disease, and improving communication for people with locked-in syndrome.

Using a brain-computer interface, a clinical trial participant who lost the ability to speak was able to create text on a computer at rates that approach the speed of regular speech just by thinking of saying the words.

The use of a brain-computer interface augmented with a virtual walking avatar can control gait, suggesting the protocol may help patients recover the ability to walk after stroke, some spinal cord injuries, and certain other gait disabilities.

Clinical research has demonstrated that a brain-to-computer hookup can enable people with paralysis to type via direct brain control at the highest speeds and accuracy levels.

Implanting BCI will become easy as Elon Musk’s Neuralink is working on implanting BCI using Robot.

The usage of BCI can increase further as scientists are working on implanting BCI devices without cutting the skull.

3D printing is also contributing significantly to improving healthcare. Scientists in China were able to grow new ears for five children born with an ear defect called microtia. Cartilage-forming cells were taken from the children’s ears and used to grow ear-shaped cartilage. The scientists used CT scanning and 3D printing to build a biodegradable scaffold that perfectly matches the 3D structure of the healthy ear of each of 5 children affected with Microtia. The mold was filled in with cartilage cells taken from the children’s deformed ears that were further grown in the lab.

Using 3D printing, researchers developed a glucose monitor with much better stability and sensitivity than those manufactured through traditional methods.

Scientists are exploring bioprinting techniques to pursue functional blood vessels.

A research team uses 3D printing and jelly-like materials known as hydrogels to take a step toward 3D-printed tissues and organs.

Engineers have developed a silicone aorta that could offer a promising alternative to heart transplants.

A research team treated an originally damaged human liver in a machine for three days outside of the body and then implanted the recovered organ into a cancer patient. One year later, the patient is doing well.

Nanomedicine is a rapidly growing field with the potential to revolutionize healthcare.
Nanoparticles can be used to deliver drugs directly to diseased cells, which can reduce side effects and improve the efficacy of treatment. They can be used to detect diseases at an early stage, when they are more treatable. Nanoparticles can act as regenerative medicine to deliver stem cells or other therapeutic agents to repair damaged tissues or organs.

Nanomedicine researchers have found a way to tame pancreatic cancer – one of the most aggressive and difficult to treat cancers – by delivering immunotherapy directly into the tumor with a device that is smaller than a grain of rice.

Nanotechnology could change the lives of thousands of people living with cystic fibrosis (CF) as research shows it can improve the effectiveness of the CF antibiotic Tobramycin, increasing its efficacy by up to 100,000-fold.

Nanodroplets and Ultrasound ‘Drills’ prove effective at tackling tough Blood Clots.

This stamp-sized device can stick to the skin and can provide continuous ultrasound imaging of internal organs for 48 hours.

Researchers have developed a new biodegradable gel that can help to improve the delivery of cells directly into the living heart and could form a new generation of treatments to repair damage caused by a heart attack.

A new type of ultraviolet light that is safe for people took less than five minutes to reduce the level of indoor airborne microbes by more than 98%.

On adult frogs, which are naturally unable to regenerate limbs, the researchers were able to trigger regrowth of a lost leg using a five-drug cocktail applied in a silicone wearable bioreactor dome that seals in the elixir over the stump for just 24 hours.

Groundbreaking pig heart transplant in a human may help patients awaiting donor hearts.

The Kidney Project’s implantable bioartificial kidney may help to free kidney disease patients from dialysis machines and transplant waiting lists in the coming days.

 An inflatable robotic hand gives amputees real-time tactile control. The smart hand is soft and elastic, weighs about half a pound, and costs a fraction of comparable prosthetics.

Scientists introduced wireless health monitoring patches that use embedded piezoelectric nanogenerators to power themselves with harvested biomechanical energy. It may lead to new autonomous health sensors as well as battery-less wearable electronic devices.

Scientists have developed an injectable gel that can attach to various kinds of soft internal tissues and repair tears resulting from an accident or trauma.

A smartphone-controlled soft brain implant can be recharged wirelessly from outside the body. It enables long-term neural circuit manipulation without the need for periodic disruptive surgeries to replace the battery of the implant.

Specially engineered contact lenses use tears to monitor patient health.

 A study found that hyperbaric oxygen treatments (HBOT) in healthy aging adults can stop the aging of blood cells and reverse the aging process.

The use of telemedicine and remote monitoring technologies is rapidly increasing, allowing patients to receive healthcare services remotely. This can be especially beneficial for patients in rural areas or those with chronic conditions requiring regular monitoring. A research team has developed a method that uses the camera on a person’s smartphone or computer to take their pulse and respiration signal from a real-time video of their face.

Researchers have developed a way to use smartphone images of a person’s eyelids to assess blood hemoglobin levels. The ability to perform one of the most common clinical lab tests without a blood draw could help reduce the need for in-person clinic visits, make it easier to monitor patients who are in critical condition and improve care in low- and middle-income countries where access to testing laboratories is limited.

MIT researchers have developed a way to incorporate electronic sensors into stretchy fabrics, allowing them to create shirts or other garments that could be used to monitor vital signs such as temperature, respiration, and heart rate.

Researchers have developed a platform for self-testing services which is based on artificial intelligence and designed for medical tasks, such as for analyzing diagnostic images.

We can find various medical innovations here.

Irrespective of medical advancements, the scientific world is still struggling to find a cure for many diseases, especially Cancer.

Read more ...

Friday, April 26, 2024

Fixed Price vs Hourly Charges for Freelancing Projects: A Guide for Clients

Check my previous post for hiring me for affordable hourly charges to do Web development (PHP, MySQL), Software Testing, and coaching or do online business.

This blog post is for discussing the pros and cons of fixed price vs hourly charges for outsourcing freelance work. 

The Case for Hourly Charges

Transparency and Client Control: With hourly charges, the client receives regular updates on the project's progress and can review the freelancer's work throughout the process. This allows for course correction and ensures the project aligns with the client's vision.

Quality and Effectiveness: Freelancers are incentivized to invest more time and effort into delivering high-quality work since they're paid based on the hours worked. This can lead to a better final product for the client.

Flexibility and Adaptability: Hourly charges are more adaptable to changing project requirements. If the scope of the project expands, the client only pays for the additional time needed.

Finding the Right Fit: If the initial freelancer isn't a good match, the client can easily replace them without significant financial loss.

Challenges of Hourly Charges

Budget Exceeding Expectations: The final cost of the project can be higher than initially planned, especially if the project scope creeps or the freelancer's hourly rate is high.

Client Management: Clients need to be proactive in requesting regular updates and actively review the freelancer's work to ensure quality and avoid misunderstandings.

The Case for Fixed Price

Budget Certainty: The client knows exactly how much the project will cost upfront, eliminating the risk of going over budget.

Challenges of Fixed Price

Scope Creep: If the project requirements change significantly, the freelancer may need to be compensated extra, or the project may suffer if they're forced to stick to the original price.

Lower Quality Work: Freelancers may be incentivized to cut corners or deliver a less polished product to complete the project within the fixed budget.

Disputes and Relationship Issues: Fixed price projects can lead to disagreements between the client and the freelancer about the scope of work or the final deliverable.


I would recommend hourly charges for most freelance projects due to the greater transparency, flexibility, and potential for higher quality work. However, I acknowledge that fixed pricing can be useful for very small, well-defined tasks.

And, I would not recommend any freelancing platforms due to their fees and restrictions.

When working with hourly charges, avoid pressuring the freelancer to provide an exact estimate upfront. A general timeframe is sufficient.

Choosing between fixed price and hourly charges depends on the specific project and the client's priorities. By understanding the advantages and disadvantages of each approach, clients can make an informed decision that leads to a successful freelance engagement.

Check my previous post for hiring me for affordable hourly charges to do Web development (PHP, MySQL), Software Testing, and coaching or do online business.

Read more ...

Monday, April 1, 2024

How to Use Gemini and ChatGPT Together to Get the Most Out Of Them

 In this blog post, we'll explore how to leverage the strengths of two large language models, Gemini (formerly known as Bard) and ChatGPT, to create informative and engaging content.

1. Start with Gemini for Factual Information

Gemini is a great tool to use when you need factual information. For instance, if you're writing a blog post about web development best practices, you can ask Gemini to list them. However, Gemini may not always provide the most creative or interesting way to present this information. You can use ChatGPT to rephrase the writing or to include additional information.

2. Use ChatGPT for Creative Writing

This is where ChatGPT comes in. ChatGPT excels at creative writing tasks like poems, scripts, and marketing copy. You can take the factual information you get from Gemini and use ChatGPT to turn it into something more engaging for your audience.

3. Don't Be Afraid to Experiment

You can experiment with both tools to see what works best for you. For example, you can ask Gemini a question and then rephrase the answer using ChatGPT.

4. Manually Verify the Information

It's important to remember that both Google Gemini and ChatGPT can sometimes provide incorrect information. It's always best to manually verify the information you get from them, especially if you're using it for something important like a blog post.

5. Use the Tools You're Most Comfortable With

If you're more familiar with Geini, you might find it easier to use it for most tasks. However, don't be afraid to step outside your comfort zone and try ChatGPT for creative tasks.

6. Stay Up-to-Date on Latest News

Gemini can be a great way to stay up-to-date on the latest news. You can ask it for specific news topics, and it will provide you with summaries of relevant articles. Then you can ask ChatGPT to improve the content writing style.

By using Gemini and ChatGPT together, you can get the best of both worlds.

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Friday, March 29, 2024

Get ChatGPT/Gemini Course for FREE or with a Discount

 AI Tools ChatGPT and Google Gemini are having a lot of potential for improving our creativity and productivity. So there is a huge demand for learning them.

If you want to learn them, it is a great opportunity. I have created a course for teaching ChatGPT and Google Gemini for Beginners.

You can get my ChatGPT/Gemini course for free simply by following the step specified in this tweet.

And, if you want to buy this course you can do it from the below links. ( Use discount code QPT) ( Use discount code QPTAPR)

The Free offer and Discount offers are applicable for a few days only. So, use them before they end. Note that this course at Udemy got more than 1000 enrollments within a few days.

If you like this course remember to add your ratings and review comments and tell it to your friends also.

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Wednesday, March 27, 2024

Sample PHP code for using Google Gemini API

Find below the sample PHP code that explains the use of Google Gemini API to create as web app as explained in this video.


//Very Simple php code to explain about using Google Gemini API

$YOUR_API_KEY=""; //Generate API Key at Google AI studio and use it here.

$prompt="tell latest Tech news";

$json_data = '{

      "contents": [{






echo ($response);


function run_curl($url, $json_data)


  $ch = curl_init($url);

curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

$response = curl_exec($ch);


return $response;



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Twitter Promotion using Google Gemini

Struggling to stand out on Twitter? Google AI's Gemini (formerly Bard) can be your secret weapon!

Spark Your Creativity:

  • Stuck for tweet ideas? Tell Gemini about your launch or service, and it'll generate catchy drafts to get you started.

Grab Attention with Images:

  • Eye-catching visuals are key. Gemini can help you create images that make your tweets pop.

Analyze the Competition:

  • Feeling left behind? Feed a competitor's tweet to Gemini. It can analyze their style and potentially generate a similar one for you, sparking new ideas.


  • Gemini is still under development. Always review its outputs before posting to ensure your brand voice shines through and facts are accurate.

Unleash Your Twitter Potential:

With Gemini, you can unlock a world of creative content for Twitter. Brainstorm engaging tweets, generate visuals, and streamline your workflow. Don't forget to add your human touch, then watch your Twitter presence soar!

ChatGPT and and Google Gemini for Beginners

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Tuesday, March 26, 2024

How to Use Google Gemini to Earn Money Online

Let us explore how Google Gemini can be a valuable tool for content creation, which can then be used to make money online.

While Gemini cannot directly generate income, here are some of the ways it can be used to create content that can help you earn money online:

  • Brainstorming content ideas: Having trouble coming up with new content ideas? Gemini can assist you in brainstorming blog posts, articles, social media content, and more.
  • Writing blog posts and ebooks: Gemini can help you write high-quality content in a fraction of the time. Simply provide it with a topic or outline, and it will generate drafts that you can edit and refine.
  • Creating marketing materials: Need help creating marketing copy, social media posts, or other marketing materials? Gemini can help you craft compelling content that will resonate with your target audience.
  • Summarizing news articles: Quickly catch up on the latest news by having Gemini summarize news articles for you. This can be a great way to stay informed and generate content ideas.
  • Translating content: Translate your content into multiple languages to reach a wider audience and increase your earning potential.

Gemini can be used to learn about web development and to create code. However, it is important to note that the code generated by Gemini should always be reviewed by a human expert before being used.

Overall, Gemini is a powerful tool that can be used to create a variety of content that can help you earn money online. However, it is important to be aware of the limitations of Gemini and to use it responsibly.

Here are some additional tips for using Gemini to earn money online:

  • Focus on creating high-quality content: The most important factor in earning money online is creating high-quality content that people want to read or watch. Gemini can be a valuable tool for helping you create this type of content, but it is still up to you to come up with good ideas and to edit and refine the content that Gemini generates.
  • Promote your content: Once you have created high-quality content, you need to promote it to your target audience. There are a number of ways to do this, such as social media marketing, search engine optimization (SEO), and email marketing.
  • Be patient: It takes time and effort to build a successful online business. Don't expect to get rich quick with Gemini. However, if you are willing to put in the work, Gemini can be a valuable tool for helping you achieve your financial goals.

Check this tweet  to get ChatGPT/Gemini Course for FREE by following a simple step.
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Monday, March 25, 2024

GK Quiz Created by Google Gemini

Find below the sample GK Quiz Created by Google Gemini as explained in this video. The answers are NOT verified manually. If you want any wrong answer, inform it through the comment section.

And, if you want to see the actual GK Quiz with 200 manually created questions, you can check this link.
  1. The smallest unit of life is a:
    • Cell
    • Tissue
    • Organ
    • Organ System
  2. The process by which plants get energy from sunlight is called:
    • Respiration
    • Photosynthesis
    • Transpiration
    • Combustion
  3. The first country to develop an atomic bomb was:
    • United States
    • Soviet Union
    • Great Britain
    • Germany
  4. The Great Wall of China was built to:
    • Keep out invaders
    • Control trade routes
    • Mark the border of the empire
    • All of the above
  5. The highest mountain in the world is:
    • Mount Everest
    • K2
    • Kangchenjunga
    • Lhotse
  6. The largest desert in the world is:
    • Sahara Desert
    • Gobi Desert
    • Arabian Desert
    • Australian Desert
  7. (**This question will depend on current events. You can replace it with a sample question based on recent news**) Which country recently launched its first mission to Mars?
    • China
    • India
    • United Arab Emirates
    • Japan
  8. The currency of Japan is:
    • Euro
    • Dollar
    • Yen
    • Yuan
  9. The author of the famous play "Hamlet" is:
    • William Shakespeare
    • Charles Dickens
    • Jane Austen
    • J.K. Rowling
  10. What is the capital of India?
    • Mumbai
    • Delhi
    • Kolkata
    • Chennai
  11. The rings of Saturn are primarily composed of:
    • Ice and rock
    • Gas and dust
    • Molten metal
    • Organic material
  12. The internet was originally developed for:
    • Commercial purposes
    • Academic research
    • Social networking
    • Military communication
  13. The world's first successful heart transplant was performed in:
    • South Africa
    • United States
    • Soviet Union
    • France
  14. The Great Barrier Reef is the world's largest:
    • Ocean
    • Forest
    • Coral reef system
    • Mountain range
  15. What is the scientific name for a common house cat?
    • Felis domesticus
    • Canis lupus familiaris
    • Equus caballus
    • Ursus arctos
Read more ...

Sunday, March 24, 2024

Good opportunity to earn money using the high-demand for ChatGPT/Gemini courses

We all know that AI tools like ChatGPT and Gemini are becoming part of our lives. So, irrespective of whether you like them or not, you need to be familiar with them to survive in the job market as well as in the business world. So, a lot of people are showing interest in joining courses to learn ChatGPT and Gemini.

I have published a Udemy course to teach chatGPT and Gemini. But Udemy won't allow us to reduce the price drastically. It has a certain minimum price. So I published the same course on my Gumroad-based e-commerce website also. You can access it at  and can get a huge discount using the discount code QPT.

Apart from getting this course at an affordable price, you can earn significant money by referring it to your friends by joining as an affiliate.

I am offering a 50% commission to the affiliates. I use the Gumroad affiliate system to give commissions for selling my products.  Read about Gumroad affiliates FAQ here. If you are interested, contact me after creating your Gumroad account. Let me know if you have any questions. I believe it is a huge opportunity to earn money online considering the huge demand for these kinds of courses.

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