You're using an outdated browser. Please upgrade to a modern browser for the best experience.
Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Topic Review
Genetic Variations in Fruit Trees
Fruit trees provide essential nutrients to humans by contributing to major agricultural outputs and economic growth globally. However, major constraints to sustainable agricultural productivity are the uncontrolled proliferation of the population, and biotic and abiotic stresses. Tree mutation breeding has been substantially improved using different physical and chemical mutagens.
  • 2.0K
  • 24 May 2022
Topic Review
Classification of Biostimulants
Biostimulants provide beneficial properties to plants by increasing plant metabolism, which promotes crop yield and improves the quality of crops; protecting plants against environmental stresses such as water shortage, soil salinization, and exposure to sub-optimal growth temperatures; and promoting plant growth via higher nutrient uptake. Biostimulants are classified as microbial, such as arbuscular mycorrhizae fungi (AMF), plant-growth-promoting rhizobacteria (PGPR), non-pathogenic fungi, protozoa, and nematodes, or non-microbial, such as seaweed extract, phosphite, humic acid, other inorganic salts, chitin and chitosan derivatives, protein hydrolysates and free amino acids, and complex organic materials.
  • 2.0K
  • 18 Sep 2023
Topic Review
Sustainability in Brazil’s Beef Industry
Since the dawn of Brazilian trade, extensive cattle farming has predominated. Brazil’s extensive pasture-based system uses pasture plants adapted to climate and soil conditions with limited use of purchased inputs. Domestic and international stakeholders have prioritized sustainable agricultural development in Brazil’s beef sector to reduce deforestation and other natural-habitat conversions.
  • 2.0K
  • 23 Mar 2023
Topic Review
Agricultural Fertilization in Europe
Fertilizers stand at the base of current agricultural practices, providing the nutrient sustainment required for growing plants.
  • 2.0K
  • 30 Jul 2021
Topic Review
South American Sea Lion
The South American Sea Lion (Otaria flavescens) is a charismatic marine mammal found along the coasts of South America, from Peru to southern Brazil, including the Falkland Islands and Uruguay. Known for its large size, robust build, and distinctive "mane" of coarse hair around the neck of adult males, this species is a top predator in its marine ecosystem. With a diverse diet consisting of fish, squid, and crustaceans, the South American Sea Lion plays a crucial role in maintaining the balance of marine ecosystems along the South American coastline.
  • 1.9K
  • 15 Mar 2024
Topic Review
Fusarium oxysporum f. sp. niveum
Fusarium oxysporum f. sp. niveum (Fon) is the causative agent of Fusarium wilt disease of watermelon; it is the most serious soil-borne pathogen around the globe. 
  • 1.9K
  • 29 Jun 2021
Topic Review
Weeds in Agricultural Fields
Weeds are significant contributors to the decline in crop yield and quality. Weeds compete with crops in terms of nutrients, water, and sunlight.
  • 1.9K
  • 18 Jan 2022
Topic Review
Aquilaria Identification Methods and Phytochemicals
Aquilaria sinensis (Lour.) Gilg is the resin-containing wood of the Aquilaria. Agarwood is a traditional Chinese medicine included in the 2020 edition of Chinese Pharmacopoeia.  The main phytochemicals of agarwood include terpenoids, dominated by sesquiterpenes. For centuries, terpenoids have been used in traditional Chinese medicine and have been shown to possess various pharmacological properties, including bacteriostatic, antibacterial, sedation, analgesia, anti-inflammation, anti-asthmatic, hypoglycemic, antidepressant, and many others. Alongside biological activity screening, phytochemical advances and pharmacological research have also made certain progress. 
  • 1.9K
  • 29 Mar 2022
Topic Review
Aggression in Dogs
Aggression as a behavior is not always desirable, often ends in abandonment and/or euthanasia. However, it is possible to prevent the occurrence of unwanted aggression in domestic dogs. Aggression is not a fully understood phenomenon. To aim to generalize the dogs’ behavior and understand their behavioral needs, ethograms have been developed. Communication of any kind, including aggression, is a natural part of a dog’s ethogram. An ethogram is a species-specific list of natural behavior. Dog ethograms include affiliate, agonistic, defensive, sedative, sexual, demonstrative, warning, stressful, playful, grooming, exploratory, related to hunting, or related to the reduction of stress.
  • 1.9K
  • 11 Mar 2022
Topic Review
Camelids Milk Nutritional Properties
Milk is considered a complete food because all of the nutrients important to fulfill a newborn’s daily requirements are present, including vitamins and minerals, ensuring the correct growth rate. A large amount of global milk production is represented by cow, goat, and sheep milks; these species produce about 87% of the milk available all over the world. However, the milk obtained by minor dairy animal species is a basic food and an important family business in several parts of the world. Milk nutritional properties from a wide range of minor dairy animal species have not been totally determined. Hot temperatures and the lack of water and feed in some arid and semi-arid areas negatively affect dairy cows; in these countries, milk supply for local nomadic populations is provided by camels and dromedaries. The nutritional quality in the milk obtained from South American camelids has still not been completely investigated, the possibility of creating an economic resource for the people living in the Andean highlands must be evaluated.
  • 1.9K
  • 23 Jun 2021
Topic Review
Soybean Callus as a Tocopherols Source
Soybean (Glycine max (L.) Merr.) is a key species used by the nutraceutical and functional food industries for its secondary metabolites such as polyphenolic compounds, tocopherols, tannins, lignins, and alkaloids. Particularly, soybean is an excellent source of tocopherols with about 300 μg g−1/seed total tocopherols. In fact, tocopherols exist in four forms (i.e., α, β, γ, and δ). Among them, γ-tocopherol is found in higher concentrations (more than 60%), and α-tocopherol accounts for less than 10% of total tocopherols in soybean seeds. Therefore, as the α-tocopherol is an essential nutrient that functions as a peroxyl radical scavenger in the body, the dietary reference intake for vitamin E is currently based solely on α-tocopherol. Despite the lesser presence, α-tocopherol is reported to have the most significant antioxidant activity among tocopherols and is preferred by the human body, as it is the predominant form of vitamin E found in the blood and tissues. α-tocopherol is a fat-soluble antioxidant and serves as a peroxyl radical scavenger protecting the polyunsaturated fatty acids in membranes and lipoproteins (protects the fats in low-density lipoproteins from oxidation). Furthermore, vitamin E is of vital importance for the nervous system, as a deficiency in humans leads to ataxia and myopathy. α-tocopherol is found naturally in plant sources as RRR-a-tocopherol and synthetically manufactured as all-rac-a-tocopherol.
  • 1.9K
  • 02 Dec 2021
Topic Review
Otter Civet
The Otter Civet, scientifically known as Cynogale bennettii, is a unique and elusive mammal belonging to the Viverridae family. Endemic to Southeast Asia, particularly in regions such as Borneo and Sumatra, the Otter Civet is characterized by its sleek, otter-like appearance and semi-aquatic lifestyle. Despite its intriguing features, this species remains relatively understudied, adding to its enigmatic nature and highlighting the importance of continued research and conservation efforts.
  • 1.9K
  • 28 Feb 2024
Topic Review
Beech Marten
The Beech Marten (Martes foina) is a slender and agile carnivore native to Europe and parts of Asia. With its distinctive cream-colored throat patch and bushy tail, this medium-sized mustelid is known for its adaptability to various habitats, including forests, woodlands, and urban areas. As a versatile predator, the Beech Marten preys on a variety of small mammals, birds, insects, and fruits, playing a vital role in ecosystem dynamics across its range.
  • 1.9K
  • 15 Mar 2024
Topic Review
Plant Nutrition and Sustainable Agriculture
There is no human nutrition without crop production, which itself must be supported by proper and sufficient plant nutrients. These plant nutrients can play a crucial role in sustainably promoting agricultural production on cultivated lands, facilitating soil carbon sequestration, and taking pressure off global peatlands and forests
  • 1.9K
  • 11 Jul 2022
Topic Review
North American River Otter
The North American River Otter (Lontra canadensis) is a charismatic and highly adaptable semi-aquatic mammal native to freshwater habitats across North America. Recognizable for its sleek, streamlined body, webbed feet, and playful behavior, this otter species is well-suited to its aquatic lifestyle. As a top predator in freshwater ecosystems, the North American River Otter plays a vital role in maintaining the health and balance of aquatic food webs.
  • 1.9K
  • 08 Feb 2024
Topic Review
Non-Mendelian Heredity in Plant Breeding
Mendelian heredity is the cornerstone of plant breeding and has been used to develop new varieties of plants since the 19th century. However, there are several breeding cases, such as cytoplasmic inheritance, methylation, epigenetics, hybrid vigor, and loss of heterozygosity (LOH), where Mendelian heredity is not applicable, known as non-Mendelian heredity. This type of inheritance can be influenced by several factors besides the genetic architecture of the plant and its breeding potential. Therefore, exploring various non-Mendelian heredity mechanisms, their prevalence in plants, and the implications for plant breeding is of paramount importance to accelerate the pace of crop improvement.
  • 1.9K
  • 15 Jun 2023
Topic Review Video
Effects of Colony Cages on Chickens
There is growing interest in keeping meat chickens in modern colony cages (CCs) rather than conventional litter-floor barns. Researchers aim to determine the animal welfare impacts of CCs using slatted flooring, in comparison to litter-based non-cage systems. Significant welfare concerns exist about CCs, centring around behavioural deprivation. Given that over 70 billion chickens are farmed then slaughtered each year globally, widespread implementation of CCs would create a major animal welfare concern. 
  • 1.9K
  • 09 Nov 2022
Topic Review
Atriplex Portulacoides as Functional Food
The halophyte Atriplex portulacoides (syn. Halimione portulacoides) occurs in habitats that are exposed to seawater inundations, and shows biochemical adaptations to saline and oxidative stresses. Its composition includes long chain lipids, sterols, phenolic compounds, glutathione, carotenoids,and micronutrients such as Fe, Zn, Co and Cu. The productivity of A. portulacoides in natural environments, and its adaptability to non-saline soils, make it a potential crop of high economic interest. This plant is suitable to be exploited as a functional food that is potentially able to reduce oxidative stress and inflammatory processes in humans and animals. This plant offers a valuable example of valorisation of the biodiversity for promoting the sustainability and diversification in agriculture.
  • 1.9K
  • 26 Nov 2020
Topic Review
Shade Covers in Water Reservoirs
Shade objects are small plastic spheres, squares or even hexagons floating on top of a water reserve for environmental reasons. The creator of shade balls in California originally used them to prevent chemical treatments in the reservoir from reacting with sunlight creating bromate, which is a carcinogen regulated by many institutions worldwide (chlorine plus sunlight turns bromine into bromate that is a potentially cancer-causing agent; because shady objects stop bromate from forming below, less chlorine is required to treat the water than without them). More recently, other environmental issues have been associated to the use of shade objects: slowing down water evaporation, preventing algae blooms, avoiding birds landing on bodies of water and promote water heating.
  • 1.9K
  • 21 Oct 2021
Topic Review
Participatory Plant Breeding
Biodiversity in general, and agrobiodiversity in particular are crucial for adaptation to climate change, for resilience and for human health as related to dietary diversity. Plant breeding is a cyclic process during which breeders generate diversity, most commonly by making crosses; select, within the diversity generated during a varying number of years, which depends on the crop, the methodology and the type of variety to be produced; and eventually obtain as a final product a new variety, which in several countries must be distinct, uniform and stable for its seed to be legally commercialized. Participatory plant breeding (PPB) has been promoted for its advantages to increase selection efficiency, variety adoption and farmers’ empowerment, and for being more socially equitable and gender responsive than conventional plant breeding.
  • 1.9K
  • 18 Feb 2022
  • Page
  • of
  • 70
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of COVID-19
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Academic Video Service
Feedback