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যুক্তরাষ্ট্রে টর্নেডোর আগাতে হতাহত অনেকে

যুক্তরাষ্ট্রে টর্নেডোর আঘাত মৃতের সংখ্যা বৃদ্ধি যুক্তরাষ্ট্রের বিভিন্ন শহরে ধারাবাহিক ভাবে টর্নেডোর আঘাতে অন্তত 26 জন নিহত হয়েছেন। অনেক বাড়িঘর ধ্বংস হয়ে গেছে এবং হাজার হাজার মানুষ বিদ্যুৎ ও গৃহহীন হয়ে পরেছে। ওয়াশিংটন পোস্টের তথ্য অনুযায়ী 60 টির বেশি টর্নেডো ধারাবাহিক ভাবে আঘাত হেনেছে ।আরাকানাস, টেনেসি, ইন্ডিয়ানা, আলাবামা এবং মিসিসিপি সহ সব রাজ্যেই মৃত্যুর ঘটনা ঘটেছে । একজন ভুক্তভোগী বলেছেন যে তাঁর স্বামী ও সন্তান আর কুকুর নিয়ে ছোট বাথরুমে আশ্রয় নিয়েছিলেন এবং একে অপরকে বিদায় জানাচ্ছিলেন, তারা ভেবেছিলেন হয়ত তারা মারা যাচ্ছেন । রাজ্যের গভর্নর রাজ্যে জরুরী অবস্থা জারি করেছেন । ভার্জিনিয়া, ওহিও এবং পেনসিলভেনিয়ায় সবচেয়ে বেশি আক্রান্ত হয়েছে। Source: bbc news.

DNA Sequencing

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DNA Sequencing and it's Application in mordern day Table of Contents What is DNA? What is DNA sequencing? How is DNA sequencing done? Application Of DNA sequencing Conclusion What is DNA? Deoxyribonucleic acid (DNA) is a bio molecule with the characteristics of self-replicating, mutable, regulate of all biological function and carrier of hereditary information of a living cell. What is DNA sequencing? DNA sequencing is the process of determining the precise order of the nucleotides (building blocks) that make up a DNA molecule. DNA is made up of four nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G). By determining the order of these nucleotides, scientists can read the genetic code of an organism. The first DNA sequencing methods were developed in the 1970s and 1980s. These methods were slow, expensive, and labor-intensive, requiring weeks or m

Peroxide Value of Oil and Fat samples

Peroxixe Value : Peroxide value is a measure of the amount of peroxides in a substance, usually a fat or oil. Peroxides are formed when fats or oils are exposed to air or heat, and they can cause the fat or oil to go rancid. Therefore, measuring the peroxide value is important in determining the freshness and quality of a fat or oil. Table of Contents Methods of peroxide Value determination Materials and reagents Needed for determination Procedure of peroxide measurement Significance of peroxide Value In Summary Methods of peroxide Value determination Peroxide determination refers to the measurement or analysis of peroxides, which are compounds that contain an oxygen-oxygen single bond (O-O) and are often used as disinfectants, bleaching agents, and oxidizing agents in various industrial and chemical processes. There are several methods available for peroxide determination,

Environmental pollution

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Basic Idea on Environmental Pollution: Environmental pollution is one of the biggest challenges that we are facing today. Table of Contents What is environmental Pollution? Types of Environmental Pollution. Effects of pollution. Ways to reduce environmental pollution. Conclusion What is environmental Pollution? It is caused by various factors such as industrialization, urbanization, deforestation, and the use of fossil fuels. Pollution has a devastating impact on the environment, causing severe damage to ecosystems, wildlife, and human health. In this article, we will explore the different types of pollution and their effects, and we will also discuss some ways to reduce pollution. Fig: Environmental pollution by industrial fumes, Photo Credit: Image by wirestock on Freepik Types of Environmental Pollution. Air pollution: Air pollution is one of the most s

Phosphorus : an essential element for living system

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What is Phosphorus? Phosphorus is a chemical element with the symbol P and atomic number 15. It is a non-metallic element that belongs to the nitrogen group on the periodic table. Pic: Phosphorous, Photo Credit: freepik. Outline of the article: Table of Contents Why it is essential? Where it is commonly found? What happening with Excess amout of Phoaphorous? Why it is essential? It is a non-metal that is essential for life as it is a key component of DNA, RNA, and ATP (adenosine triphosphate), which are crucial molecules for cellular function and energy storage in all living organisms. Phosphorus is used in a variety of industrial applications, such as in the production of fertilizers, detergents, and various other chemicals. It is also used in the production of semiconductors and as a flame retardant in plastics. Where it is commonly found? Phosphorus is common

Six exciting alternative income that can you try in 2023

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Exciting alternative income that may grab your attention : There are a number of alternative income sources that we could consider in 2023, depending on our skills, interests, and resources. Pic:Income register book Six main ideas to get we started: Freelancing. Online tutoring. Investing. Renting out your property. Starting a side hustle. Participating in the gig economy. Conclusion Freelancing. Freelancing has become increasingly popular in recent years, and it offers a great way to earn money from our skills and expertise. We could offer our services as a writer, graphic designer, web developer, social media manager, or consultant, among others. Online tutoring. With the rise of remote learning, online tutoring has become a lucrative option for those with teaching experience. We could offer our services as an English or math tutor, o

Standard Operating Procedure (SOP) for Melting Point Machine

Standard Operating Procedure (SOP) for Menting Point Instrument: Ensure that the melting point machine is clean and free from any residual material from the previous use. Connect the machine to a suitable power source and ensure that it is properly grounded. Calibrate the machine according to the manufacturer's instructions before use. Prepare a sample of the substance to be tested. The sample should be dry, finely powdered, and uniform in size. Fill a small amount of the sample into a melting point capillary tube, making sure that the tube is not overfilled and that the sample is evenly distributed. Set the temperature range as per the manufacturer's instructions and turn on the heating source. Observe the sample as the temperature increases and record the temperature range in