eChapters

Virus can be defined as a genetic element containing either DNA or RNA that replicates in host cells as intracellular parasites but is characterized by having an extracellular state.

Virus can use the metabolic machinery of the host cell and can modify the genetics of the host cell. Virus has both extracellular and intracellular state.

Extracellular State

Outside the host cell, the virus is a minute particle containing nucleic acid surrounded by protein, which is referred as virions or virus particles. Virions are inert and have no biosynthetic and metabolic functions. Extracellular state or virus particle is the perfect stage of virus to study the morphology and chemistry.

Intracellular State

The active state in which the virus replicate in the host cell. When the virus nucleic acid is introduced to host cell and replication starts, the process is referred as infection. The cell in which infection of virus and replication takes place is referred as host cell.

A. Viruses: Structure and Characteristics
What is a Virus?
A virus is an infectious agent composed primarily of nucleic acid (either DNA or RNA) enclosed in a protein coat called a capsid. In some cases, viruses may also have an outer lipid membrane or envelope. Plant viruses are much smaller than bacteria and fungi, and they lack the cellular structures necessary for independent life. They can only replicate by hijacking the host cell’s machinery.
Structure of Viruses
1. Nucleic Acid: This is the genetic material of the virus, which can be either RNA or DNA, and it carries the instructions for making new virus particles. Plant viruses are mostly RNA viruses, though some DNA viruses also exist.
2. Capsid: The protein shell that encloses and protects the nucleic acid. The capsid is made of protein subunits called capsomeres and can take various shapes, such as rod-like (rigid or flexible) or spherical.
3. Envelope: Some plant viruses may have an outer lipid envelope derived from the host cell’s membrane, which provides additional protection.

Definition of Virus
Viruses are very small (submicroscopic) infectious particles (virions) composed of a protein coat and a nucleic acid core. They carry genetic information encoded in their nucleic acid, which typically specifies two or more proteins. Translation of the genome (to produce proteins) or transcription and replication (to produce more nucleic acid) takes place within the host cell and uses some of the host’s biochemical “machinery”. Viruses do not capture or store free energy and are not functionally active outside their host. They are therefore parasites (and usually pathogens) but are not usually regarded as genuine microorganisms.
Mathwas (1981) considers a virus as a set of one or more template molecules normally encased in a protective coat or coats of protein or lipoprotein, which is able to organize its own replication only within suitable host cells where its production is:
i) Dependent on hosts protein synthesizing machinery (ribosomes).
ii) Organised from pools of required material rather than binary fission and
iii) Located at sites which are not separated from the host cell contents by a lipoprotein bilayer membrane.

Definition of Virus

According to Luria and Darnell (1968), Viruses are entities whose genome is a nucleic acid, either DNA or RNA, which reproduce inside living cells and use their synthetic machinery to direct the synthesis of specialized particles- the virions, which contain the viral genome and transfer it to other cells.

Nature of Virus

The physical and chemical nature of viruses eluded scientists until the 1930s. Stanley (1935) announced crystallization of Tobacco mosaic viruses, a feat for which he got a Nobel Prize. Stanley thought the crystals to be pure proteins. It was the pioneer work of F.C. Bawden and N.W. Pirie of England which showed that the viruses consists of proetein and nucleic acid. The chemical nature of viruses was settled. It consisted of nucleic acid and protein. The viruses chemically were proved to be nucleic acid. The mature particle of a plant virus is generally called virion and the whole infective particle is called as Nuclcocapsid.

Introduction

The microbial cells of bacteria, actinomycetes, fungi, algae and protozoa are visible by light microscopy. Beyond the resolution of light microscope are the unique organisms that are sub microscopic and intracellular parasites known as viruses. The term virus is a Latin word means poisonous substance. The viruses are functionally and metabolically different from the cellular organisms as (i) they are infectious agents and contain only one type of nucleic acid encapsulated in a protein coat. Some may possess membranes but do not have any cytoplasm or metabolism of their own. (ii) They are much smaller in size than the smallest bacteria and can pass through bacteriological filters. 

The thoracic cavity (Fig. 3-3 A, B and C) contains lungs and pleura, the heart and pericardium, the great vessels connected with the heart (the aortae, azygos veins and venae cavae), the oesophagus, trachea, the lymph nodes, vessels, nerves and lymphatics. All of these contents except the lungs and pleural sacs are located in the mediastinum, while the lungs along with the pleural sacs are situated on either sides of the mediastinum.

Lungs

The right and left lungs (Fig. 3-3 A and B) are paired organs which occupy greater space of the thoracic cavity. Each lung is enclosed in a double layered bag of serous membrane called the pleural sac. The right lung is larger, almost double in size than the left one. The difference in size is mainly due to an additional lobe called the intermediate lobe and the greater size of an apical lobe of the right lung. Each lung is divided into different lobes formed by deep fissures extending from the ventral border to almost the area of the root of the lung. Each lung is soft, light weighted, spongy and elastic. The surface of the lung is smooth and glistening and it is mapped out into irregular areas indicating the lobules of the lungs. In the fresh, unpreserved cadaver the lung collapses to about one third of its original size and looses its normal shape. The colour in fresh state is pink, in bled animals it is pale grey and in unbled animals it is dark red. In embalmed specimens, the outer surface of the lungs is marked by the imprints of other organs and structures that are related to lungs in the thoracic cavity.

Present study was undertaken to evaluate the ameliorative potential of α-tocopherol, curcumin and/or in combination with cisplatin following 28 days continuous exposure. Forty-eight male wistar rats of 190-210 g were divided into eight groups group I (NSS, i.p.), group II (corn oil, oral gavage) served as vehicle control, group III received cisplatin, group IV (α-tocopherol), group V (curcumin), group VI (cisplatin + α-tocopherol), group VII (cisplatin + curcumin), group VIII (cisplatin + curcumin + α-tocopherol). Cisplatin was given by intra-peritoneal route @ 0.5mg/kg b.wt., while α-tocopherol @ 100 mg/kg b.wt. and curcumin @ 50 mg/kg b.wt. by oral gavage continuously for 28 days. Cisplatin produced apparent signs of toxicity like rough coat, cachexia, decreased activity but no mortality in rats. Body weight and percent weight gain in rats with cisplatin alone and in combination with α-tocopherol and curcumin treated groups were significantly lower. Absolute and relative organ weight did not differ between different groups. Significant reduction in Hb on 21 day and 28 days after exposure was observed. Marked reduction in PCV, TLC and platelet count in cisplatin alone treated group following 28-day exposure however DLC remain unaltered. Significant decrease in creatinine clearance in all cisplatin exposed groups when compared to control groups.

Abstract
The future of progressive farming is shaped by the convergence of technology, sustainability, and innovation. This chapter explores the emerging trends, technologies, and strategies that are expected to define the next generation of farming practices. By integrating advancements in precision agriculture, biotechnology, sustainable resource management, and digital transformation, progressive farming aims to enhance productivity, sustainability, and resilience in agriculture. This vision encompasses the use of cutting-edge technologies, the adoption of holistic and sustainable practices, and the role of policy and education in fostering a new era of agriculture. Case studies and projections highlight the potential pathways and challenges for achieving these future goals.
Keywords: Progressive farming, future agriculture, precision agriculture, biotechnology, sustainability, digital transformation, agricultural technology, resilience, policy, education.

A visit to agri-based enterprises focusing on the integration of production, processing, and distribution offers valuable insights into how these sectors can be effectively linked to improve efficiency, reduce waste, and enhance profitability. Here’s a breakdown of what such a visit might entail and the functional aspects you’d likely observe:
I. Objectives of the Visit
• Understanding Integration: To observe firsthand how production, processing, and distribution are integrated in a real-world agri-business.
• Identifying Best Practices: To identify successful strategies and technologies used in the enterprise.
• Analyzing Functional Aspects: To examine the key functional areas and their roles in the integrated value chain.
• Learning About Challenges: To understand the obstacles faced by the enterprise and how they are overcome.
• Networking: To establish contacts with industry professionals and learn from their experiences.
II. Agri-Based Enterprises to Consider
The type of enterprise you visit will significantly shape your observations. Here are a few examples:
• Dairy Processing Plant: Integrates milk production at farms with processing (pasteurization, cheese-making) and distribution to retailers.
• Fruit and Vegetable Processing Unit: Links farms producing fruits and vegetables to processing (canning, freezing, juice extraction) and distribution networks.

Materials Required

Record book

Procedure

    1.    Follow the instructions given by the teacher and the factory representative.
    2.    Listen carefully to the explanations of the factory representative
    3.    Observe the functioning of various equipments
    4.    Ask queries wherever not understood properly.
    5.    Note down the observations in your record book  

Observations

    1.    Name and address of the factory or processing unit
    2.    Size of the Unit (Large, Small, Cottage, Home)
    3.    FPO Licence No.    
    4.    List of products manufactured    
    5.    Height of the processing plant    
    6.    Information regarding raw material store, finished product storage    
    7.    List of equipments installed in the factory
    8.    Water supply system     
    9.    Waste disposal system    
    10.    Hygiene in the surroundings    
    11.    Any other

Visit to a seed processing unit and attending the following questionnaire to know firsthand information on operations of shop floor

This practical assignment is conceptualized and operationalized to study the settlement pattern, social stratification system, family resource base, ongoing development programmes and SHG of SGSY.

PURPOSE

To acquaint students with the first-hand knowledge about the village pattern and the on-going developmental programmes.
 To study about the extension programmes like SHG of SGSY and their structure and function.

NAME OF THE UNIT: 

    1.    Location of Seed Storage 
    2.    Date of Inspections/visit

This visit gives students an exposure to mass media like radio, television studio and helps them in understanding elements, equipment and overall process of programme production used for disseminating information on agriculture and rural technologies.

PURPOSE

To get acquainted the students about the mass media by visiting the community radio and television studio

To know the operating system how a programme is delivered in the radio and television

Controlled environment agriculture (CEA) refers to methods of cultivating crops in managed environments to optimize resources and increase productivity. CEA systems regulate both the aerial and root environments, ensuring that plants stay within their ideal growth conditions. One popular method within CEA is indoor hydroponic farming, where crops, including fruits and vegetables, are grown without soil.
CEA includes various levels of technology integration to achieve optimal
plant growth, including:
• Low-level Integration: Basic environmental control in open-field production, such as shading and irrigation systems.
• Passive Environmental Controls: Systems for soil-based crop production, such as covering materials and high tunnel structures. • Integrated Sensors and Active Control Systems: Used in greenhouse systems to regulate environmental factors and enhance sunlight.
• Full Indoor Production: The most advanced method, where technology is used to create an ideal environment for plants independent of external conditions.
HYDROPONIC SYSTEMS
In hydroponic systems, plants are either grown with their roots in direct contact with liquid nutrient solutions (often supported by floating rafts or trays) or placed in containers with other types of soilless media like coconut coir, rockwool, or peat mixes. Irrigation delivers all necessary nutrients in these soilless systems. Advantages and Disadvantages
Hydroponic systems offer several benefits, including:
• Year-Round Production: Crops can be grown continuously, even during winter months.

This practical assignment is conceptualized and designed to acquire practical learning experience through various activities implemented by NGOs in improving the livelihood of the targeted group. The assignment also projects a clear picture about the objectives, structure, functioning and activities of NGOs.

PURPOSE

To make the students acquainted with the NGOs and their learning experience in rural development.

THEORETICAL ORIENTATION

A non-governmental organization (NGO) is a not-for-profit organization that is independent from states and international governmental organizations. They are usually funded by donations but some avoid formal funding altogether and are run primarily by volunteers. NGOs are highly diverse groups of organizations engaged in a wide range of activities, and take different forms in different parts of the world.

THEORETICAL ORIENTATION

The word “democracy” is derived from the Greek roots - ‘cracy’ meaning ‘rule of and ‘demos’ meaning ‘the people’. It is governance of the people, by the people, for the people. Rule by majority is, no doubt, an important feature of this system of governance; but the more important ingredient is rule by consultation - consultation between the people’s representatives on one hand and consultation with the officers on the other. ‘Decentralization’ means devolution of central authority among local units close to the areas served. Where authority is devolved by this process on people’s institution, it is ‘democratic decentralization’.

At the instance of the Prime Minister it was decided to give the process of the three-tier administration the strictly Indian name, “Panchayati Raj” which means a system of government. Panchayati Raj was conceived system of democratic local self-Government. Earlier, Mahatma Gandhi also advocated panchayati raj as the foundation of India’s political system, as a decentralized form of government in which each village would be responsible for its own affairs. The term for such a vision was Gram Swaraj (“village self-governance”). The institution of Panchayat represented not only the collective will, but also the collective wisdom of the entire rural community.

The Balwant Rai Mehta Committee, headed by M P Balwant Rai Mehta, was a committee appointed by the Government of India in January 1957 to examine the work of the Community Development Programme (1952) and the National Extension Service (1953) and to suggest measures for their better work. The committee recommended the establishment of the scheme of ‘democratic decentralisation’ which finally came to be known as 'Panchayati Raj' which would be a 3-tier system - 'Gram Panchayat' at the village level, Panchayat Samiti at the block level, and Zilla Parishad at the district level.

This practical assignment is dealt with the appropriate extension strategies and methodologies adopted by KVK and ATIC in disseminating proven agriculture information and technologies to farmers through delivery mechanisms.

PURPOSE

To acquaint the first-hand knowledge of the KVK- Farm Science Centre and ATIC

To study the structure, function of the centre and the role of the centre in transfer of technology.

Wildlife Sanctuary is a natural habitat, owned by the government or private agency, that safeguards particular species of birds and animals to make sure that viable population of the wildlife and their habitats are maintained.

Visiting the zoo should be understood in terms of conservation by all and it is to be remembered that the zoo is a captive wild animal place wherein the public and particularly the children have ample opportunities to see the various species of wild fauna which includes not only the native species of wild mammals, reptiles, aves, amphibians, butterflies etc. but the exotic speciess of wild animals also in general.

Abstract

Visualisation of geological process raises special issues for scientists and animators. The degree of physical movement of a rising arch or along a fault line may be very small compared to the normal terrain variation. Over a long time period the major changes in the environment may come from the more substantial surface manifestations of changing draining regimes. In Tamil Nadu State in South-Eastern India there are continuing tectonic movements arising from the collision of the subcontinent with the greater Asian land mass. Over comparatively recent times (7000 years) these movements have had a major impact on drainage and other hydrological outcomes. The Cauvery River in particular has migrated several hundred kilometers over this period. A mosaic was made from recent satellite imagery and then manipulated to create surface textures for dates between -7000 years and +1000 years. Changes in the terrain surface, such as rising arch structures and descending grabens, have been modelled and animated. The combination of terrain movement and surface change provides a visual history of the period.

Introduction

The continued northward movement (5±6 mm per year) of the subcontinental land mass of India induces substantial tectonic pressures all over India. In the southeast, primarily within Tamil Nadu, there is significant differential movement, both vertical and horizontal, of portions of the existing land mass. This is producing a number of effects:

10.1 Introduction
Having explored the advanced analytical techniques that allow us to extract meaningful insights and build predictive models from meteorological data, we now arrive at a crucial stage in the scientific process: communication and understanding. The chapter, “Visualization of Meteorological Data,” focuses on the art and science of transforming complex numerical datasets into insightful visual representations. In a field as inherently spatial and temporal as meteorology, effective visualization is not just about making pretty pictures;it is a fundamental tool for exploration, analysis, and the clear conveyance  of information about atmospheric phenomena (Fig. 10.1).
Consider the sheer volume and multifaceted nature of meteorological data. We grapple with variables spanning three spatial dimensions (and often more when considering altitude), evolving dynamically over time, and encompassing a wide array of physical quantities – temperature, pressure, wind vectors, humidity, precipitation rates, radiation fluxes, and more. Raw numbers and statistical summaries, while essential for quantitative analysis, often fail to reveal the intricate spatial patterns, temporal evolutions, and interrelationships that characterize weather and climate. This is where visualization steps in,
acting as a bridge between the abstract world of numerical data and our intuitive human capacity for visual pattern recognition.

In this chapter, we will explore multiple comparison tests, with a particular emphasis on three significant tests: least significant difference (LSD), Bonferroni, and the techniques to visualize their outcomes. We aim to facilitate a comprehensive understanding of how to conduct and interpret the results of these comparison tests visualization using the R software.

Treatment Comparison

The “doebioresearch” package is commonly used for testing the significance of treatment groups in various experimental designs such as randomized block design (RBD), completely randomized design (CRD), and least significant difference (LSD). This package excels in conducting multiple comparison tests like LSD, Duncan’s multiple range test (DMRT), and Tukey’s honestly significant difference (HSD). It efficiently calculates all comparisons in the background, resulting in the generation of only group labels, as previously demonstrated in the output of the “doebioresearch” package. Additionally, the “agricolae” package is another useful tool that provides detailed values for multiple comparison tests. These three tests—LSD, DMRT, and HSD—are particularly popular in agricultural experiments and form the focus of our discussion.

I. Least significant difference (LSD) test

• To conduct the least significant difference test for comparing treatment means, the “agricolae” package is essential.

• To install the “agricolae” package, use the following code:

• install.packages (“agricolae”)

• After installation, activate the package with this command:

• library (“agricolae”)

• The data frame required for analysis in this context remains consistent with what is needed for randomized block design (RBD), completely randomized design (CRD), LSD, and variability analysis, among others. As an illustration, consider an example involving variability analysis.

Vital Statistics

It is defined as that branch of biometry which deals with data and the laws of human mortality, morbidity and demography. According to N.B. Ryder, they “provide cumulative summaries for successive time periods of population movements like birth, death, migration, marriage and marital dissolution as well as demographic and other relevant characteristics of the individuals involved in these events.”

Measures of Vital Statistics of Population

The total number of vital events such as births and deaths are converted into rates and ratios for comparison of vital statistics from place to place or year to year. In order to determine the population at any time ‘t’ after the census or between two censuses, a number of methods have been devised. Therefore, a suitable method which makes use of births, deaths and migration statistics, if we assume that:

(i) The census data gives us the total size of the population of a region or community together with age and sex distribution

(ii) The birth, death and migration statistics during different periods are obtained from registers.

Vitamin A

Source of Vitamin

Berseem, legumes, alfalfa or other grass meal, fish oils, yellow corn, palm oil, commercial Vitamin A concentrate

Before the turn of present century, it was considered that carbohydrates, fats, proteins and minerals were sufficient for fulfilling the nutritional needs of animals. Later it was recognised that several other factors also need to be provided in the diet in small quantities, the absence of which resulted in diseases like beriberi, scurvy, pellagra and rickets. Funk in 1912 proposed the term vitamine for such factors, vita for being essential and amine because these factors were thought to be amines in chemical structure. Later it was discovered that not all such factors were amines, hence the last ‘e’ from the word vitamine was dropped.

The quantities of vitamins needed by the body are small, in the range of milligrams or micrograms. For this reason these compounds are also known as accessory foodstuffs. Thus vitamins came to be regarded as essential dietary factors which are required by an organism in small quantities and whose absence results in deficiency diseases. Many of these vitamins acts as coenzymes in important metabolic reactions of the body.

The vitamins have been broadly classified on the basis of their solubility. Fat soluble vitamins - A, D, E and K. Water soluble vitamins- B complex and C. This classification has proved useful from the functional point of view also for an extended period of time and is now an established classification scheme. The water soluble vitamins cannot be stored in the body over extended periods of time during periods of opulence and used during periods of scarcity.

Most vitamins cannot be synthesized by the body hence the need for dietary supplement. However, ruminants, have an advantage in that the rumen microorganisms can manufacture most of the B-complex vitamins which are utilized and required by the animal. Vitamin C is required only by human beings and guinea pig, hence is not of importance as a dietary ingredient for the domestic animals. Most other animals are able to synthesize adequate amounts of vitamin C required by them. The site of synthesis of vitamin C is not well established but it seems that the intestinal tract, liver and adrenal glands are actively involved.

At this stage it should be clarified about the dietary and physiological requirements. All vitamins are physiologically required by the domestic animals but only a few are required to be a essential dietary ingredient.

A. Answer the following questions

1.    Why vitamin Ais called anti-infective vitamin?

Ans: Vitamin A is concerned with the synthesis of muco-polysaccharides distributed throughout the body as in respiratory tract,alimentary tract,reproductive tract,genitor-urinarytractetc. In thedeficiencyof vitaminA,theepithelium lining of these tracts becomes keratinized with the result that it becomes prone to infection. That’s why it is also called as anti-infective vitamin.

2.    Why ducks are less effective than chickens in converting tryptophan to niacin?

Ans: Ducks have a 3-4 folds higher level of picolinic acid carboxylase than chicken which enzyme converts the tryptophanto picolinic acid instead of niacin.

3.    Whyvitamin Cis dietaryessential tohumans, monkey, guinea pigs?

Ans: In these species, due to lack of L-gulonolactone oxidase enzyme which is required for synthesis of vitamin C (from 6 carbon sugars like glucose/ galactose in liver or kidney),they can not synthesize their own requirement in their bodies.

4.    What is vitamin?

Vitamins are naturally occurring, vital nutrients that are needed in small amounts. They are important for bone and tissue health, wound healing, growth and development, immune system function, and other biological processes. These vital organic substances serve a variety of biochemical purposes. Vitamins, like minerals, are not biosynthesized by the body. Consequently, in order to maintain our health, we must obtain them from the food we eat or, in rare circumstances, supplements.

Vitamins in Milk

Together with water- soluble vitamins like vitamin C and B complex and provitamins, milk also contains a variety of fat- soluble vitamins like A, D, E, and K. Some of these vitamins do, however, have very low concentrations.

Vitamin A (Retinol)

Plant foods contain carotenoids, which are the precursors of vitamin A, whereas animal foods provide preformed vitamin A in the form of retinyl esters.

Vitamins are essential organic nutrients required by an organism in small quantities. They are essential since they cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. The term vitamin does not include other essential nutrients like dietary minerals, essential fatty acids, or essential amino acids which are needed in larger quantities than vitamins. The term vitamin is derived from “vitamine,” coined in 1912 by the Polish biochemist Funk. The name is from vital and amine, meaning amine of life. Thirteen vitamins are generally recognized presently. Vitamins are used in small quantities by an organism to keep it in a healthy condition.

Franz Holfmeister’s (LT, 1850-1922) definition, “vitamins are substances which are indispensable for the growth and maintenance of the animal organism, which occur both in animal and plants and are present in only small amounts in food”, still holds good, although it has been interpreted in various ways.

Vitamins are essential organic nutrients required by an organism in small quantities. They are essential since they cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. The term vitamin does not include other essential nutrients like dietary minerals, essential fatty acids, or essential amino acids which are needed in larger quantities than vitamins. The term vitamin is derived from “vitamine,” coined in 1912 by the Polish biochemist Funk. The name is from vital and amine, meaning amine of life. Thirteen vitamins are generally recognized presently. Vitamins are used in small quantities by an organism to keep it in a healthy condition.

Vitamins are given letters of alphabet (A,B, C, D, etc.) in the order in which they have been discovered. The letters do not bear any relation to their structures or their importance. Vitamins are classified by their biological and chemical activity and not by their structure. Thus, each “vitamin” refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Vitamin A includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well.

Introduction

The basic components of diet include carbohydrate, protein, fat, vitamins and minerals. Vitamins are the essential nutrients which are not formed in our body and required in minute amount from the diet. Vitamins are crucial for the optimal functions of several enzymes; thus important for optimal growth and development. Vitamins perform various functions that help in regulation of metabolism, prevent chronic diseases, maintain natural appetite, mental health and immunity.

In 1912, Polish biochemist Kazimierz Funk coined the term ‘vitamine’;a substance that was present in rice polishing and foods that cured polyneuritis in birds and beriberi in humans. The name is from ‘vit’ for vital nutrient and ‘amine’ for its similarity as an amine. Vital signify that these factors are indispensable for life. Earlier they are identified and thought to contain amino groups, thus the word amine was used, which was true for thiamine but later work revealed that most of the vitamins do not have amino groups. Thus the word was shortened to vitamin in English. It should be noted that the term vitamin does not denote to some othern utrients such as essential amino acids, essential fatty acids, dietary minerals or other nutrients that contribute towards good health.

Vitamins may be defined as organic compound needed in minute amount through diet to perform specific biological functions for normal growth and health of the organisms.Vitamins should have following characteristics:

A vitamin is an organic compound required by an organism as a vital nutrient in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when it cannot be synthesised in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and on the particular organism. For example, ascorbic acid (vitamin C) is a vitamin for humans, but not for most other animals. Supplementation is important for the treatment of certain health problems but there is little evidence of benefit when used by those who are otherwise healthy.

By convention, the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in larger amounts than vitamins) nor the large number of other nutrients that promote health but are otherwise required less often. Thirteen vitamins are universally recognized at present. Vitamins are classified by their biological and chemical activity, not their structure. Thus, each “vitamin” refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Such a set of chemicals is grouped under an alphabetized vitamin “generic descriptor” title, such as “vitamin A”, which includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well.

Vitamins have diverse biochemical functions. Some, such as vitamin D, have hormone-like functions as regulators of mineral metabolism, or regulators of cell and tissue growth and differentiation (such as some forms of vitamin A). Others function as antioxidants (e.g., vitamin E and sometimes vitamin C).

1. The disease Beri - beri is caused due to deficiency of vitamin
   1. D
   2. C
   3. B
   4. A
2. Which of the following vitamin is found in Fish liver oil?
   1. Vitamin D
   2. Vitamin C
   3. Vitamin K and C
   4. Vitamin A

Vitamins are natural and indispensable nutrients that are essential for our bodies in small quantities. Vitamins are indispensable for a multitude of biological functions, including growth, development, wound healing, maintaining healthy bones and tissues, supporting the immune system, and more. These vital organic compounds exhibit diverse biochemical functions and are essential for metabolic processes. The discovery of vitamins dates back to 1912 when Casimir Funk, a Polish American biochemist, initiated research on their sources, functions, and deficiency disorders. Because of his groundbreaking work, Funk is widely recognized as the pioneer of vitamins.

Types of vitamins

The classification of vitamins is determined by their solubility, resulting in two distinct groups: fat-soluble vitamins and water-soluble vitamins.

Fat-soluble vitamins

Fat-soluble vitamins, as their name implies, need fat for absorption and are stored in the fat cells. These vitamins include Vitamin A, D, E, and K.

California’s Napa Valley, situated at the northern end of the San Francisco Bay 30 miles (48 kilometers [km]) from the Pacific Ocean, is the most famous wine appellation in the United States. This small valley, 56 km long and 8 km wide at its broadest point, has produced some of North America’s finest wine grapes from the 1850s to the present. Today it contains approximately 18,616 hectares [ha] of vineyards along the valley floor, in the foothills and mountains flanking the main valley and in the smaller valleys in the eastern part of Napa County [45].

Introduction
In the digital age, smartphones have evolved into powerful tools capable of handling various tasks, including high-quality audio recording. This capability has revolutionized voice recording for multiple applications, from podcasts to interviews, video voiceovers, and field recordings. This chapter explores techniques for optimizing voice recording using smartphones, along with an overview of mobile apps and equipment to enhance audio quality. By the end of this chapter, you will have a comprehensive understanding of effective voice recording practices using your smartphone, regardless of your skill level.
Importance of High-Quality Voice Recording
Clear and professional voice recording is essential in creating engaging audio content. Poor audio quality can deter audiences, even when paired with highquality video or visuals. Smartphone voice recording, however, has unique challenges: background noise, limited microphone quality, and recording consistency. Understanding techniques and choosing suitable equipment and apps can substantially improve audio quality and make a lasting impression. Basic Techniques for Voice Recording with Smartphones
Choose a Quiet Recording Environment
Background noise is a common issue in smartphone recording. Reducing unwanted sounds can significantly enhance recording quality. Ideally, select a quiet, enclosed space, and turn off any sources of noise (fans, air conditioners, etc.). For better sound insulation, soft furnishings and rugs help absorb unwanted ambient noise.

Introduction
Voice synchronization, or “lip-syncing,” involves matching audio tracks to video so that spoken words align precisely with the movements in the video. This is crucial in various production contexts, such as film, animation, video dubbing, and post-production editing, where accurate synchronization enhances the viewing experience by making interactions feel natural and seamless.
Advanced video editing and audio software, like Adobe Premiere Pro, DaVinci Resolve, and Avid Media Composer, provide powerful tools to achieve this with precision. These tools include automated time-stretching, audio wave alignment, and frame-by-frame adjustments, allowing editors to visually align audio waveforms with video frames for meticulous timing. Additionally, AIdriven tools, such as those found in software like Adobe Audition or Descript, can further streamline synchronization by automatically detecting and adjusting timing mismatches, saving time while improving accuracy.
Proper synchronization in video production ensures that the audio and visual elements are cohesively blended, enhancing storytelling and engaging the audience. For professionals, this attention to detail in syncing voice to video is essential for achieving high-quality, polished final products across various media.
This chapter provides an in-depth look at the tools and techniques for voice synchronization using advanced software, including Adobe Premiere Pro, DaVinci Resolve, Avid Media Composer, and Adobe Audition. We will discuss step-by-step processes, professional tips, and troubleshooting methods that can enhance the syncing process and ensure professional-quality results.

1.0. Objectives

• To impart knowledge about voices
• To differentiate between active and passive voices
• To escribe rules of transferring from active to passive and Vice versa
• To provide the knowledge of making communication and writing more effective with the inclusion of voice

Active Voice is used when the subject of the sentence is prime and emphasis is on that.

E.g. Teacher elected him CR of the class.

12.1 Introduction

Volatile Organic Compounds (VOCs) are chemicals that evaporate easily at room temperature. The term “organic” indicates that the compounds contain carbon. VOC exposures are often associated with an odor while other times there is no odor. Both can be harmful. There are thousands of different VOCs produced and used in our daily lives.

ABSTRACT

Cymbopogon khasianus (Hack.) Stapf. ex Bor. variety [IIIM (J) CK-10 Himrosa] is a commercially important aromatic grass of the family Poacae and contains high valued volatile constituents which has high demand in pharmaceutical, flavour, fragrance and cosmatic industries. This plant variety is one of the rich source of two monoterpenoids, geraniol and ocimene. Geranoil is an alcohol frequently used as terpenoid fragrance material, and ocimene is a group of isomeric hydrocarbons. The present communication deals with the herb yields, volatile constituents and agrotechnology of CK-10 Himrosa. The volatile constituents vary from season to season and from geographic locations of cultivation. Data presented were collected from field trials and experiment works conducted on farmer field at Balesar area of district Jodhpur (Rajasthan). It has been observed that [IIIM (J) CK-10 Himrosa] is rich in geraniol whose percentage varies from 70-80%, cisocimene (10-11%) trans-cimene (5-6%) geranyl acetate (2-3%), and various others constituents present in minor quantities. For analysis of volatile constituents, Gas Chromatography–Flame Ionization Detector (GC-FID) and GC-Mass Spectrometry (GC–MS) methods were developed. Agronomic data indicate substantial variations in the essential oil compositions, which varies due to season of harvest and place of cultivation. This crop is hardy in nature and from future perspectives; extension of these aromatic crops in rainfed and saline areas could brought un-utilized barenlands and wastelands under cultivation. Biomass and essential oil obtained from this crop would be helpful in development of new value added products. This may serves as economic crop for marginal farmers and helpful in gaining international recognition after development of products in the form of perfumes, soaps, cosmetics and other products for human use.

This chapter introduces the readers about volcanoes and associated features and hazards. Volcanic disasters are like any other geohazards in causing dangerous impacts. However, volcanic explosions are preceded by many surficial expressions that can be detected through satellite imageries, thermal sensors, change in magnetic and gravity anomalies, disappearances of vegetation, sudden appearances of anomalous water vapor, thermal springs and abnormal behavior of animals. Hence, unlike other geohazards, volcanic hazards could be forecast with fairly accurate time limits that may allow evacuation and precautionary safety measures. While avoidance is the best mitigation measure, proper land use planning, provision of scientifically designed damming and diversion methods could save lives and infrastructure from lava flows. Though, atmospheric contamination by volcanic gases, ash cloud and pyroclastic materials could not be thwarted and controlled and thus they could cause havoc.

INTRODUCTION

The term “Volcano” is derived from the name of Roman mythical God of fire “Vulcan”. A volcano is an opening of different shapes, through which, molten rock and gas get ejected either violently or simply flow over earth’s surface. The molten rock and gaseous materials are drawn from deep inside of crust or mantle of the Earth. Repeated ejection of molten materials through vent, fissures or plate margins forms volcanic mountains on earth’s continental or submarine regions.

Volcanism is a threat not only to the lives and infrastructure, but it also drastically alters landscape, impacts atmospheric quality and renders forests, cities and villages and cultivation lands useless. In addition, volcanic eruptions are capable of causing changes in global atmospheric cycles. For example, the eruptions of El Chicho’n in Mexico in 1982, Laki volcano in Iceland and Asama Volcano in Japan in the year 1783 and Krakatau volcano of Japan in the year 1883 have all impacted global climate and atmorpheric dynamics.

Secondary standard solution

Solution of chemicals which lack one (or) all the properties for a primary standard

A solution standardised by titrating a primary standard

Less accurate than a primary standard

Volumetric Analysis

Measurement of volume of reagents required for the completion of reactions

Also called titrimetry – most widely used techniques of chemical analysis

Rapid, accurate, convenient and inexpensive

Titration, also known as titrimetry, is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte.  Since volume measurements play a key role in titration, it is also known as volumetric analysis. A reagent, called the titrant or titrator is prepared as a standard solution. A known concentration and volume of titrant reacts with a solution of analyte or titrand  to determine concentration. The volume of titrant reacted is called titre. Volumetric analysis originated in late 18^th-century in France.

Volumetric analysis, also known as titrimetric analysis, is an analytical method of estimating the concentration of a known solute (analyte) in a solution by measuring the volume of a second known solution of known concentration (standard solution), that reacts completely with the known solute of unknown concentration. The prerequisite of titration is that the two different analytes, present in solution form, must involve in a fast chemical reaction. The standard solution is more commonly known as ‘titrant’ and the solution whose concentration needs to be determined is frequently called ‘titrand’.

Key Points

• Vomiting is a common sign of various conditions, including irritants and toxins, kidney or liver failure, pancreatitis, neurological disorders, and digestive issues. Common in dogs and cats.

• Can be fatal in horses with acute stomach dilatation.

• Ruminants (cattle, buffalo, sheep, and goats) vomit by regurgitating ruminal material through their mouths.

Introduction

Vomiting is the violent ejection of stomach and, on occasion, proximal small intestine contents through the mouth caused by fierce contractions of the diaphragm and abdominal muscles. It is the most prevalent protective disruption in the gastrointestinal system. Vomiting has three distinct phases: nausea, retching, and vomiting. A sense of nausea may or may not cause vomiting. Nausea is scientifically defined as sadness, salivation, lip-licking, and increased swallowing motions in animals. Retching is caused by a series of spasmodic respiratory movements involving the closed glottis. Vomiting is characterized by repeated thoracic invaginations of the abdominal esophagus and cardia. Projectile vomiting often occurs when an animal begins to vomit without going through three stages.

The analysis of land use patterns has long been one of geography’s basic concerns. At first, it might appear as if agricultural land use is little affected by relative location, once the factor of a suitable market has been acknowledged. Indeed, the farmer does adapt his land use to site conditions, climate, land forms, and soils.

However, the effects of the market situation cannot be disposed of as easily as all that. Johann Heinrich Von Thunen (17831850), a German economist and estate owner of the early 19th century, developed a theory of agricultural location that is still worth considering.

This model is based on an econometric analysis of his estates in Mecklenburg, near Rostock in Germany. Most of the data used in explaining his theory were obtained by him through practical experience. He attempted to construct a theoretical model of land use pattern, giving a particular arrangement of towns and villages in a situation experienced in Mecklenburg.

The main aim of Von Thunen’s analysis was to show how and why agricultural land use varies with the distance from a market.

While circulation is a measure of tendency of fluid rotation, vorticity is the same property of fluid for an infinitely small area.