eChapters

Introduction

Meaning of Entrepreneur

The term “entrepreneur” is derived from the French verb entreprendre, which means “to undertake.” Historically, its meaning has evolved. In the early 16th century, it referred to individuals involved in engineering tasks like construction. By the 18th century, the term came to describe those engaged in economic activities. Over time, the concept of an entrepreneur shifted from someone participating in military ventures to someone actively involved in business and economic pursuits. Today, an entrepreneur is defined as an individual who innovates, organizes resources, and takes on risks to create new ventures or products with the goal of generating profits.

Richard Cantillon was the first who proposed the term “entrepreneur is an agent who buys factors of production at certain prices in order to combine them into a product with a view to selling it at uncertain prices in future.”

Introduction
Development of eye
The eyeball is a complex structure having tunics i.e. fibrous tunic (sclera, cornea), vascular tunic (iris, ciliary body, choroid)and nervous tunic (retin a)and its adnexa i.e. eyelids, lacrimal apparatus, extraocular muscles, conjunctiva and other soft tissue are very important structure for proper functioning of eye. The embryonic tissue which contributes for development of eye and its adnexa are:
1. Surface ectoderm of the head: Lens, corneal epithelium, eyelids, Lacrimal gland and conjunctival epithelium
2. Neural ectoderm of the forebrain: Retina, Posterior epithelium of iris and ciliary body, optic nerve
3. Mesoderm: Cornea stroma, Descemet’s membrane, Choroid, Sclera, extra-ocular muscles
Development of eye begins simultaneously with the development of brain by the process of neurulation. Neural tube is lined by neuroectoderm and the exterior of embryo lined by surface ectoderm. Neural crest cells, population of specialized mesenchymal cells develop from the lateral border of the neural fold and do not participate in the formation of neural tube. These neural crest cells migrate under the surface ectoderm peripherally and populating the region around the optic vesicle and form the future all connective tissue of structure of eye.
Formation of optic vesicle and optic cup which develop the retina
The optic sulci are visible as paired evaginations of the forebrain neural ectoderm on day 13 of gestation in the dog. The outpouching on either side of optic field of diencephalon (caudal part of prosencephalon) called optic vesicle which attached to the diencephalon by optic stalk. In dog, it appears at the gestation age of day 15. Each optic vesicle grows laterally until it comes into contact with the surface ectoderm. The surface ectoderm become thickened to form the lens placode near the optic vesicle. This lens placode invaginates into the optic vesicles and form lens vesicle, which later on loses it contact with the surface ectoderm. Simultaneously, the optic vesicle invaginates to form double layered optic cups. The neuroepithelial cells of inner layer of the optic cups proliferate and

ABSTRACT

Future is the era of ICT (Information Communication Technology) which is equally applicable in the field of Agriculture. Farmers database will be an important part of ICT which is required for smooth functioning of various agricultural activities like Farmer’s Trainings, Demonstrations, Crop monitoring, Support to farmers, implementation of various government schemes etc.  This software records farmers Name, Phone number, Sex, Category (SC/ST/Gen),  Number of dependents, Annual agricultural income, whether fully or partially dependent, Land holding size,  Major crops, Village, Block, Sub-division, Land situation (Plains/ Low Hills/ Mid Hills/ High Hills), Soil Reaction, Soil type, (Highly Acidic/Moderately /acidic/Neutral/Alkaline/Highly Alkaline), NPK status, Irrigation facility and information regarding Cattle. From the above record various reports can be generated according to the needs of the scientific personnel. For example soil scientist will have record of soil pH & NPK status of different farmers across the district. Scientist can filter the database to get farmers of a particular soil type to conduct training;

Introduction
The mammalian embryos are subdivided into two groups namely domestic animals where extraembryonic membranes form by folding process, and primates where blastocyst implants very soon after it enters the uterus and extra embryonic membranes forms after implantations. The major function of fetal membranes is to provide nutrients to developing fetus, protection, synthesis of enzymes and hormones and caring of fetal waste products. It is consisted of yolk sac, amnion, allantoic and trophoblast or chorion. The trophoblast is the single most important tissue of fetal membranes which has potential role in absorbing, transmitting and handling nutritive and waste products.
Yolk sac
It is a primitive structure. Develops early in the embryonic period from the entoderm which disappears after short period of time in ruminants. The uterine milk, secreted by the endometrial glands, is absorbed by the blastocyst along with yolk sac to provide nutrition to early embryo. Before forming other embryonic membranes yolk sac performs limited functions whose role is limited during mid and late gestation.
Amnion
It is an ectodermic vesicle that arises from an out folding of the chorion which is a double walled sac that completely surrounds the fetus except at the umbilical ring. The inner layer of this double-walled sac is the “true amnion” and the outer layer is the “false amnion” amnion chorion. Like yolk sac, the amnion chorion also lasts for shorter period.The amniotic fluid is clear, colorless and mucous in nature. Source of amniotic fluid: In early to mid-gestation, it is probably from the amniotic epithelium and from fetal urine as the fluid is quite watery. As gestation advances, the allantoic fluid increase in volume while the amniotic fluid volume remains fairly static but

1. Introduction

Fish forms an integral component of the Indian food basket and it is more so for the population living in the eastern and north eastern States of India. The eastern states of India include States such as West Bengal, Bihar, Jharkhand and Odisha. As per a current estimate of 2023 (https://www.indiacensus.net), approximately a population of 31.66 crore, i.e. 22.15% of the country’s total, live in these four States. Due to the suitable geographical terrain, these states have been bestowed upon a large number of riverine stretches, a large number of natural reservoirs of varied sizes, beels and floodplain wetlands, and a huge plain terrain supporting ponds and tank resources. Due to the very nature of the land and the popularity of fish among the populace, these eastern Indian states have also served as the main stage for the development of fisheries and aquaculture during the last centuries in the country. Further, many of the epoch making technologies for the development of fisheries in the inland waters as well as aquaculture in the ponds have originated from this region.

Principle
Jam: Jam is a product made by boiling the fruit pulp with a sufficient quantity of sugar to reasonable consistency, firm enough to hold fruit tissues in position. Apple, pear, sapota, apricot, carrot etc. are used for preparation of fruit jam. Jam contains 0.5-0.6 % acid and invert sugar should not be more than 40 %.
Total soluble solids (TSS)
The TSS value is defined as the amount of sugar and soluble minerals present in fruits and vegetables. A refractometer is based on the principle of total refraction. This is done by placing a few drops of distilled water on the prism in the specimen chamber of the back the cover. The distilled water reading should be zero. If it is not so, it should be set to zero with the scale correction knob. The specimen chamber is now cleaned with muslin cloth or tissue paper. For determining the TSS, a drop of sample (jam, juice and syrup, etc.) is placed on the prism and the percentage of dry substance in it read directly on scale in refractometer.

Principle
Jelly: Jelly is a semi-solid product prepared by boiling a clear, strained solution of pectin containing fruit extract, free from pulp, after the addition of sugar and acid. A perfect jelly should be transparent, well set, but not too stiff, and should have the original flavour of the fruit. It should be of attractive colour and keep its shape when removed from the mould. Pectin (0.5-1.0%), acid (0.5-0.75%), sugar (65%), and water are the four essential ingredients. Pectin test and determination of end-point of jelly formation are very important for the quality of the jelly. Some recipes for jelly making are given below:

Principle
Nectar: The term ‘fruit nectar’ is used to designate pulpy fruit juice blended with sugar syrup and citric acid to produce a ready-to-drink beverage. In this fruit beverage contains at least 20% juice/pulp and 15% total soluble solid and also 0.3% acid. It is not diluted before serving. Many fruit juices are either too acidic or strongly flavoured; these cannot be pleasant without dilution of blending or both. These strong, tart juices are delicious after dilution with thin syrup or blend juice e.g. apricot, guava and plum juice. Out of the tropical fruits, nectars made from banana, guava, mango and papaya are quite popular. The product is sealed in container or glass bottles and processed by heat to prevent spoilage. The fruit ingredients may be puree, pulp, juice or concentrated equivalent to 40 percent of the finished products. Apples, cherries and pineapples are used in combination with others fruits. The sweeteners are sugar, invert sugar syrup, dried corn syrup, glucose syrup and the optional ingredients are lemon juice, citric, malic and fumaric acids as acidifier and ascorbic acid as antioxidants (150 ppm) can be used.

Principle
Squash: A fruit juice squash essentially consists of juice containing moderate quantity of fruit pulp to which cane sugar is added for sweetening e.g. orange squash, plum squash. This is a type of fruit beverage containing at least 25 percent fruit juice/pulp and 40-50 percent total soluble solids, commercially. It also contains about 1.0 percent acid and 350 ppm SO2 or 600 ppm sodium benzoate. It is diluted before serving.
Mango, orange and pineapple are used for making squash commercially. It can also be prepared from lemon, lime, guava, pear, apricot, muskmelon, papaya etc., using potassium metabisulphate (KMS) as preservative, or from jamun, passion fruit, peach, phalsa, mulberry, raspberry, straw berry, grapefruit etc., with sodium benzoate as preservative.

Circular economy principles provide a framework for developing materials that minimize resource consumption and waste while maintaining functional performance throughout their life cycle. This chapter examines the development of green nanocomposites through sustainable sourcing, circular material design, appropriate processing technologies, and functional enhancement. It discusses strategies for selecting renewable raw materials, designing composites for circularity, applying nanotechnology to improve performance, and evaluating environmental impacts through life-cycle assessment. Applications of sustainable green nanocomposites and challenges in implementing circular economy principles are also considered. The chapter concludes by highlighting future innovations in synthesis, design, processing, and evaluation needed to expand the contribution of green nanocomposites to global sustainability.

2.1 Introduction

Greenhouses are used mainly for cultivating vegetables and fruits during the off-season to provide favorable growing conditions. Proper management of the greenhouse structure is necessary to create these off-seasonal favorable conditions for plants. Factors like site selection, location, atmospheric conditions, cropping pattern, and structure of the greenhouse are considered during the development of a greenhouse. The National Committee on the use of Plastics in Agriculture (NCPA-1982) suggests conducting site-specific greenhouse technology trials before implementation across the nation.

Introduction
Cardiovascular system consists of heart and blood vessels which include both arteries and veins. The formation of blood vessels occurs in two stages-vasculogenesis and angiogenesis. Blood islands are formed on the yolk sac by clusters of mesodermal cells. Vasculogenesis i.e., formation of blood vessels starts during third week of gestation in the blood islands. It starts first in the yolk sac and later in the allantois. Angiogenesis describes budding and sprouting of new vessels from the existing vessels. The adult heart is a modified blood vessel. The cardiogenic plate lies ventral to the pericardial coelom in the third week gestation. The position gets reversed with the forward growth of the head and folding of the embryo. Two endocardial tubes appear by the end of 6 to 7 somite stage which fuse to form the primitive heart in the 8 to 9 somite stage. The parts of the endocardial tube are- sinus venosus, atrium, ventricle, bulbus cordis and truncus arteriosus. The four chambered heart is formed by the formation of endocardial cushions, interatrial septum, interventricular septum and spiral septum. The interatrial septum includes the formation of septum primum and septum secundum. Oxygenated blood from the placenta enters the embryo by a large umbilical vein which enters the liver of the developing embryo. It is conveyed to the posterior vena cava through ductus venosus. The blood from the vena cava enters the right atrium which is sent to the left atrium through foramen ovale. Blood then enters the left ventricle and transmitted to all the parts through the aorta) The umbilical arteries arising from the aorta transport blood to placenta for oxygenation. After birth, lungs become functional as the placental circulation ceases. The formation of arterial system involves the modification of aortic arches, ventral aorta, dorsal aorta and its dorsal, ventral and lateral branches. Aortic arches appear sequentially and connect cranial portions of dorsal aorta with ventral aorta)The venous system is derived from the remnants of the cardinal system and vitelline veins and to a lesser extent the umbilical veins.

Initially, exploitation of heteosis was confined to corn and a few other open- pollinated crops but presently heterosis is being exploited practically in all species cutting across mode of reproduction. More and more evidences are emerging that heterotic expression in a cross is a function of genetic backgrounds and genes. Heterotic grouping would remain a key strategy in management of diverse genetic backgrounds and genes for full exploitation of heterosis. The commonly used methods in developing hybrids in self- pollinated crops are listed and explained as follows:

Manual emasculation and Pollination Method

In this method, female parent flower buds are emasculated manually and the emasculated buds are pollinated by the pollen grain collected from protected flowers of the male parent. This method is effective and successful where the crossed fruits produce plenty of seeds and the seed requirement for planting the commercial hybrid seed is much less. Consequently, this method is being used in a routine manner on a commercial scale in vegetable crops mostly by private sector seed companies in India and south-east Asian countries. The crops covered under this method of hybrid seed production are as follows:

Tomato, hot-pepper, sweet pepper, eggplant, okra, bottle gourd, bitter gourd, ridge gourd, smooth gourd, cucumber, pumpkin, water melon and muskmelon. Cucurbits are included here as although they are cross-pollinated but behave like self-pollinated crops in terms of almost no inbreeding depression.

I. FILL UPS

1. _____ is a crossing between two genetically dissimilar parents.
2. Detasseling is done in _____.
3. _____ is an example for chemical hybridizing agent.
4. _____ is called as pollen parent.
5. _____ is the fertile counter part of A line.
6. DUS stand for _____.

The proposal presented takes into account the rationale of using natural source of immunity, discarding any preservatives or artificial flavors and additives. Collection of fresh produce followed by processing of fruits and vegetables, in the form of a veggie mix slushy which is ready to eat, ready to cook and easy to digest, through the use of sustainable retorting technology. The proposal takes into account the major problems regarding food for the elder like lack of digestion, in sufficient appetite, lack of value in terms of vitamins and minerals of food, also targeting the notion of feeling sick by taking multi vitamin and immunity tablets on a regular basis.

Introduction
The integumentary system is a vital organ system in animals, encompassing the skin, hair, nails, and associated glands. This complex system is essential for protecting the body, regulating temperature, providing sensory information, and facilitating communication among individuals. The development of the integumentary system is a remarkable evolutionary adaptation that reflects the diverse environmental challenges faced by different species. The integumentary system has evolved to meet the specific needs of various species, playing a crucial role in survival. As organisms transitioned from aquatic to terrestrial environments, the integument had to adapt to prevent dehydration, protect against UV radiation, and manage temperature fluctuations. For example, the development of a thicker, keratinized epidermis in terrestrial animals minimizes water loss and provides a barrier against environmental stressors. In mammals, the integumentary system exhibits even greater complexity. The evolution of hair, fur, and other adaptations allows for enhanced thermoregulation, sensory perception, and social interaction. For instance, many mammals have evolved specialized hair types, such as the insulating undercoat found in Arctic species or the short, coarse hair of desertdwelling animals that aids in heat dissipation. Anatomical Structure The integumentary system is composed of several key components: the epidermis, dermis, hypodermis (subcutaneous layer), and associated appendages such as hair follicles, sebaceous glands, and sweat glands.
1. Epidermis: The outermost layer of the skin, the epidermis, is primarily composed of keratinocytes, which produce keratin, a protein that provides strength and waterproofing. Melanocytes, located within the epidermis, produce melanin, the pigment responsible for skin color. The thickness of the epidermis varies significantly among species, with adaptations reflecting the ecological niches of each animal.

1. Introduction

Jackfruit is a fruit crop that is under appreciated and neglected. The jackfruit (Artocarpus heterophyllus Lam.) is a member of the Moraceae family. India is the world’s greatest cultivator and producer of jackfruit, also known as the poor man’s fruit because it grows more in rural than metropolitan areas. It is a pretty huge tree that bears the world’s largest edible fruit. The jackfruit is a tropical fruit native to Southeast Asia. It is thought to have originated in India’s rainforests, in the Western Ghats, and is now widely farmed throughout the region’s lowlands. The leading jackfruit producers in the world include Bangladesh, India, Myanmar, Nepal, Thailand, Vietnam, China, the Philippines, Indonesia, Malaysia, and Sri Lanka. Jackfruit can be found in East Africa, Brazil, and Caribbean nations such as Jamaica. Bangladesh’s national fruits are the jackfruit, mango, and banana.

5.1 Introduction

The chapter describes the development of local web server on the laptop, to control the actuator from the server. Web server is used as remote control for the system. The system is designed to control water pump with respect to the soil sensor values. It comprises of NodeMCU, soil sensor, LCD, two relay boards for pump in and out the water from field.

Introduction

A marketing plan is a strategic document that guides an organization in generating leads and engaging with target customers. It serves as a roadmap for how a company will approach the market, akin to a job description for the business. Every organization needs a well-crafted marketing plan that is tailored to its specific objectives, regularly updated, and aligned with customer demands. Companies with a solid marketing plan tend to be more successful and outperform their competitors compared to those without one.

The marketing plan outlines a strategy for growth by detailing how a company will attract and retain customers. It is an integral part of the overall business plan and lays the foundation for future market opportunities. A strong marketing plan focuses on customer needs and provides a clear roadmap for launching new products, expanding the customer base, and boosting the company’s profile. It includes essential elements such as business goals, mission, budget, and strategies. A well-designed marketing plan ensures effective promotion of products and services, helping businesses reach their target market and track success. Moreover, it should be flexible and adaptable to the evolving market landscape.

Principle
Pickle is an edible product preserved and flavoured in a solution of common salt and vinegar. Spices and oil are also added. They add to palatability of a meal, aid in digestion and are good appetizers too. Pickles are prepared from fruit and vegetables like cauliflower, reddish, carrot, green chili, turnip, cabbage, onion, mango, jackfruit, aonla and lemon etc. Commercial preservation of many pickle relied upon conversion of fermentable carbohydrates by lactic acid bacteria to organic acids during bulk storage and/or the addition of sufficient amount of sugar, vinegar and other ingredients to the fully cured and packed products to preclude any microbial growth. Organic acids, oil, salt and spices all have antimicrobial properties at suitable concentration especially in combination which preserves the pickles. Pickles in brine such as or after fermentation however, need some amount of preservative or pasteurization to prevent the spoilage.