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यह एक आम कहावत है जिसका प्रयोग लगभग सभी ने कभी न कभी ज़रूर किया होगा । लेकिन इस कहावत को एक बहुत ही तंग अर्थ में प्रयोग किया जाता है। इसका प्रयोग हम केवल तीन प्रकार के खाने  – सात्विक, राजसिक व तामसिक – में फ़र्क करने के लिए करते हैं जबकि इस कहावत में एक बहुत बड़ा संदेश छुपा है। अन्न से मतलब खाने की कोई भी चीज़ जो घर के अन्दर आती है या हम खाते हैं।

             सबसे पहले तो यह देखना होगा कि अन्न को आपने किस प्रकार प्राप्त किया। यह घर में आया किस प्रकार से। क्या मेहनत मज़दूरी से; ईमानदारी की कमाई से; हक हलाल की कमाई से। अगर हेरा फेरी से, किसी दूसरे का हक छीन कर, चोरी-चकारी से, किसी को धोखा दे कर यह अन्न घर में आया है तो इसका खाने वालों पर भी बुरा असर पड़ेगा। संत हमेशा ईमानदारी और मेहनत की कमाई पर ज़ोर देते आये हैं।  

             दूसरा बिन्दु यह है कि इस अन्न को पकाया किस ने। क्या पकाते समय उस के मन में कोई ग़लत विचार, या गुस्सा या किसी प्रकार की टेंशन तो नहीं थी, क्योंकि खाना पकाने वाले के मन में जिस प्रकार के  विचार  खाना बनाते समय चल रहे होंगे, खाने वालों पर खाने का वही असर होगा। इसीलिए हमारी दादियाँ और माएँ पुराने ज़माने में जब खाना बनाती थीं तो उस समय भजन या संतों की बानियाँ गुनगुनाते हुए बनाया करती थी, टी वी देखते हुए या फिल्मी गाने गाते हुए नहीं।  इस बाबत एक सच्ची घटना है। एक बार एक व्यक्ति को कुछ दिनों के लिए होटल में खाना खाना पड़ा। दूसरे या तीसरे दिन उसको स्वपन आया कि वह घर से बेघर हो रहा है और मकान की तलाश में इधर उधर भाग रहा है, मकान की तलाश कर रहा है। वह बहुत हैरान हुआ,  क्योंकि उसका अपना मकान था, वह किसी किराये के मकान में नहीं रह रहा था । किसी मनोवैज्ञानिक से उस ने सलाह ली। मनोवैज्ञानिक ने उसके साथ जाकर उस होटल के खाना बनाने वाले से पूछ्ताछ की तो पता चला कि वह अभी जिस किराये के मकान में रह रहा है उस के मालिक ने मकान खाली करने का नोटिस दे दिया है और वह दिन में होटल आने से पहले किसी मकान की तलाश में भटकता है। अर्थात  जब वह खाना बनाता था तब भी उसके मन में मकान के विचार घूमते थे और वह किसी और मकान की तलाश के  बारे में सोच  रहा होता था जिसका असर उसके बनाए खाने को खाने वाले उस व्यक्ति पर हुआ।

             तीसरा ; खाना खाते वक्त खाने वाले के मन की अवस्था का असर। जैसे विचारों के साथ व्यक्ति खाना खा रहा है,  उस पर खाने का असर भी वैसा ही होगा। गुस्से के विचारों के साथ खा रहा है तो खाना भी गुस्से के विचार पैदा  करने वाला हो जायेगा। अगर उस समय मन में कामुकता/लोभ/धोखेबाज़ी के   विचार होंगे तो खाने का असर भी वैसा ही होगा।

             इसलिए हमें चाहिए कि मेहनत और ईमानदारी की कमाई से कमाया हुआ धन घर में लाएँ; खाना बनाते समय तथा खाते समय परमात्मा का धन्यवाद करते हुए, परमात्मा को याद करते हुए ही खाना खाएँ ताँकि हमारे विचार शु्द्ध हों और एक स्वस्थ समाज का निर्माण हो।   

The Body Mass Index is also known as Qetelet Index because it was invented by Adolphe Quetelet. In fact, it is a statistical measurement which compares an individual’s weight and height. Although/ it does not actually measure the percentage of body fat, yet is very useful tool to estimate a healthy body weight based on how tall an individual is. Indeed it is the most widely used tool to indentify the weight problem. BMI is very easy to measure and evaluate. With the help of BMI one can come to know whether one is under weight, normal weight, over weight or in classes of obesity. BMI can be defined as the individual’s body weight divided by the square of his height i.e.,

BMI can be determined using BMI chart. It’s value is measured in Kg/m2.
Now with the help of WHO (World Health Organization) criteria for under weight and obesity, an individual may come to know that he belongs to category of under weight, normal weight, over weight in the categories of obesity. The categories are:

The Find and Replace option helps you to search a particular letter, word, phrase or sentence in your document and then replace it, if you want. Steps to use the find and replace feature in a document are as follows:

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When a particle is thrown obliquely near the earth’s surface, it moves along a curved path under constant acceleration that is directed towards the center of the earth (we assume that the particle remains close to the surface of the earth). The path of such a particle is called a projectile and the motion is called projectile motion. Air resistance to the motion of the body is to be assumed absent in projectile motion.

In a Projectile Motion, there are two simultaneous independent rectilinear motions:

1. Along the x-axis: uniform velocity, responsible for the horizontal (forward) motion of the particle.
2. Along y-axis: uniform acceleration, responsible for the vertical (downwards) motion of the particle.

Molecular mass of an element is defined as the sum of the masses of the elements present in the molecule. Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule. Let us see an example: carbon dioxide.
The molecular mass of carbon dioxide CO2 = atomic mass of carbon + 2 × (atomic mass of oxygen)
= 12.011 u + 2 × (16.00 u)
= 44.011 u

When electrodes are immersed in water and electricity passed, the bubbles formed on the positive terminal is actually Oxygen gas. 

A computer virus is a program which can harm our device and files and infect them for no further use. When a virus program is executed, it replicates itself by modifying other computer programs and instead enters its own coding. This code infects a file or program and if it spreads massively, it may ultimately result in crashing of the device. 

Types of computer viruses:

• Boot Sector Virus – It is a type of virus that infects the boot sector of floppy disks or the Master Boot Record (MBR) of hard disks. The Boot sector comprises all the files which are required to start the Operating system of the computer. The virus either overwrites the existing program or copies itself to another part of the disk.
• Direct Action Virus – When a virus attaches itself directly to a .exe or .com file and enters the device while its execution is called a Direct Action Virus. If it gets installed in the memory, it keeps itself hidden. It is also known as Non-Resident Virus.
• Resident Virus – A virus which saves itself in the memory of the computer and then infects other files and programs when its originating program is no longer working. This virus can easily infect other files because it is hidden in the memory and is hard to be removed from the system.
• Multipartite Virus – A virus which can attack both, the boot sector and the executable files of an already infected computer is called a multipartite virus. If a multipartite virus attacks your system, you are at a risk of cyber threat.

Sleep mode, sometimes called standby or suspend mode, is a power-sparing state that a computer can enter when not in use. When the computer enters sleep mode, power is cut to any unneeded systems, while RAM receives just enough power to enable it to maintain data.

Geotropism: The movement of plant parts in response to gravity is known as geotropism. The stimulus is gravity.

The shape of guard cells changes due to amount of water in them. The guard cell swell when water flows into them, causing the stomatal pore to open. Similarly, the pore closes if the guard cells shrink, due to the loss of water in then.

Interacting with others while exchanging information is called Messaging because when you interact with each other you don't encode or decode you communicate

A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to some maps, but unlike maps, do not distort the surface that they portray except to scale it down. A model globe of Earth is called a terrestrial globe.

Zonal Institute for Education & Training

eighty crore cups of tea

When the train stopped on the way at a station, a vendor called, 'chai-garam garam-chai'. They took tea and started sipping it. Rajvir told Pranjol that over eighty crore cups of tea are drunk every day throughout the world.

REGULATION OF RESPIRATION

• A specialised centre present in the medulla region of the brain called respiratory rhythm centre is primarily responsible for this regulation.
• Another centre present in the pons region of the brain called pneumotaxic centre can moderate the functions of the respiratory rhythm centre.
• Neural signal from this centre can reduce the duration of inspiration and thereby alter the respiratory rate.
• A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to CO₂ and hydrogen ions.
• Receptors associated with aortic arch and carotid artery also can recognise changes in CO₂ and H⁺ concentration and send necessary signals to the rhythm centre for remedial actions.

Blood transports CO₂ from the tissue cells to the lungs in three ways:

1. Dissolved in plasma : About 7 – 10% of CO₂ is transported in a dissolved form in the plasma.

2. Bound to haemoglobin : About 20 – 25% of dissolved CO is bound and carried in the RBCs as carbaminohaemoglobin (Hb CO₂ ) CO₂ + Hb → Hb CO₂ .

3. As bicarbonate ions in plasma about 70% of CO₂ is transported as bicarbonate ions. This is influenced by pC0₂ and the degree of haemoglobin oxygenation. RBCs contain a high concentration of the enzyme, carbonic anhydrase, whereas small amounts of carbonic anhydrase is present in the plasma.

→ At the tissues the pCO₂ is high due to catabolism and diffuses into the blood to form HCO₂ and H ions. When CO₂ diffuses into the RBCs, it combines with water forming carbonic acid (H₂ CO₂ ) catalyzed by carbonic anhydrase. Carbonic acid is unstable and dissociates into hydrogen and bicarbonate ions.

Carbonic anhydrase facilitates the reaction in both directions.

The HCO₃^- moves quickly from the RBCs into the plasma, where it is carried to the lungs. At the alveolar site where pCO₂ is low, the reaction is reversed leading to the formation of CO₂ and water. Thus CO₂ trapped as HCO₃^- at the tissue level is transported to the alveoli and released out as CO₂ . Every 100 mL of deoxygenated blood delivers 4 mL of CO₂ to the alveoli for elimination.