Soil is a complex mixture of minerals, organic matter, gases, liquids and organisms that supports plant life. It performs key functions like supporting plant growth, storing and purifying water, modifying the atmosphere, and providing a habitat for decomposers. Soil consists of solid and porous phases that hold gases, water and organisms. It contains layers including topsoil and subsoil. Soil contains minerals like clay in forms such as kaolinite and montmorillonite, which influence properties like cation exchange capacity. Organic matter in soil comes from dead plants and animals and their decomposers. Humus is highly decomposed organic matter that provides nutrients and texture to support plant growth. Climate strongly influences the production and breakdown of
SUPERGENE ENRICHMENT; Definition; Zones; Morphology of Zoning; Oxidized zone ; Supergene zone ; Gossans and Cappings; Chemical Changes Involved; Electrowinning; Formation of Copper Oxides
Most evaporites are derived from bodies of Sea-water, but under special conditions, Inland lakes may also give rise to evaporite deposits, particularly in regions of low rainfall and high temperature.
Evaporite deposits are excellent indicators of paleoclimate (need a hot and arid climate for major evaporite deposits to form)
in this all the soil type and their characteristic are explain deeply. for the know lade of the student. son u dont need to go any where related to this topic you will be get each and every thing deeply.
Igneous rocks formaion through chemical weatheringrita martin
Igneous rocks are generally termed as fire rocks formed either underground or above ground there are two types Intrusive, Extrusive igneous rocks mainly containing high silica content
SUPERGENE ENRICHMENT; Definition; Zones; Morphology of Zoning; Oxidized zone ; Supergene zone ; Gossans and Cappings; Chemical Changes Involved; Electrowinning; Formation of Copper Oxides
Most evaporites are derived from bodies of Sea-water, but under special conditions, Inland lakes may also give rise to evaporite deposits, particularly in regions of low rainfall and high temperature.
Evaporite deposits are excellent indicators of paleoclimate (need a hot and arid climate for major evaporite deposits to form)
in this all the soil type and their characteristic are explain deeply. for the know lade of the student. son u dont need to go any where related to this topic you will be get each and every thing deeply.
Igneous rocks formaion through chemical weatheringrita martin
Igneous rocks are generally termed as fire rocks formed either underground or above ground there are two types Intrusive, Extrusive igneous rocks mainly containing high silica content
|| A note on soil ||
|| Introduction/Profile of soil ||
|| Characteristics &Types of soil ||
|| Production & Formation of soil ||
|| Properties & classification of soil ||
Soil is the mixture of minerals, organic matter, gases, liquids, and myriad organisms that together support plant life. Two general classes are topsoil and subsoil. Soil is a natural body that exists as part of the pedosphere and which performs four important functions: it is a medium for plant growth; it is a means of water storage, supply and purification; it is a modifier of the atmosphere of Earth; and it is a habitat for organisms all of which modify the soil. Soil is considered to be the "skin of the earth" with interfaces between the lithosphere, hydrosphere, atmosphere of Earth, and biosphere.[2] Soil consists of a solid phase (minerals and organic matter) as well as a porous phase that holds gases and water.[3][4][5] Accordingly, soils are often treated as a three-state system.[6]
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
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CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
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GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
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This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
DevOps and Testing slides at DASA ConnectKari Kakkonen
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The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
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2. Heatmap utilization for testing
3. Optimization of testing processes
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Orchestrator execution result
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GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
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Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
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2. WHAT IS SOIL?
• Soil is the mixture of minerals, organic matter, gases, liquids and a myriad of microand macro- organisms that can support plant life. It is a natural body that exists as
part of the pedosphere and it performs four important functions: a medium for
plant growth; water storage, supply and purification; modifier of the atmosphere; a
habitat for organisms that take part in decomposition and habitat for other
organisms.
• Soil is considered the "skin of the earth" with interfaces between the lithosphere,
hydrosphere, atmosphere, and biosphere.[1] Soil consists of a solid phase (minerals
& organic matter) as well as a porous phase that holds gases and water.[2][3][4]
Accordingly, soils are often treated as a three-state system.[5]
4. MINERALS IN SOIL
• The layers of clay are sometimes held together through hydrogen bonds or potassium
•
•
•
•
bridges and as a result swell less in the presence of water. Other clays, such as
montmorillonite, have layers that are loosely attached and will swell greatly when water
intervenes.[85]
There are three groups of clays:
Crystalline alumino-silica clays: montmorillonite, illite, vermiculite, chlorite, kaolinite.
Amorphous clays: young mixtures of silica (SiO2-OH) and alumina (Al(OH)3) which have
not had time to form regular crystals.
Sesquioxide clays: old, highly leached clays which result in oxides of iron, aluminium and
titanium.[86]
5. Alumino-silica clays
•
Montmorillonite clay is made of four planes of oxygen with two silicon and one central aluminium plane intervening. The alumino-silicate
montmorillonite clay is said to have a 2:1 ratio of silicon to aluminium. The seven planes together form a single layer of montmorillonite. The layers are
weakly held together and water may intervene, causing the clay to swell up to ten times its dry volume. It occurs in soils which have had little leaching,
hence it is found in arid regions. The entire surface is exposed and available for surface reactions and it has a high cation exchange capacity (CEC).[88]
•
Illite is a 2:1 clay similar in structure to montmorillonite but has potassium bridges between the clay layers and the degree of swelling depends on the
degree of weathering of the potassium. The active surface area is reduced due to the potassium bonds. Illite originates from the modification of mica, a
primary mineral. It is often found together with montmorillonite and its primary minerals. It has moderate CEC.[89]
•
Vermiculite is a mica-based clay similar to illite, but the layers of clay are held together more loosely by hydrated magnesium and it will swell, but not as
much as does montmorillonite. It has very high CEC.[90]
•
Chlorite is similar to vermiculite, but the loose bonding by occasional hydrated magnesium is replaced by a hydrated magnesium sheet, firmly bonding the
planes above and below it. It has two planes of silicon, one of aluminium and one of magnesium; hence it is a 2:2 clay. Chlorite does not swell and it has
low CEC.[90]
•
Kaolinite is very common, more common than montmorillonite in acid soils. It has one silica and one alumina sheet per layer; hence it is a 1:1 type clay.
One layer of oxygen is replaced with hydroxyls, which produces strong hydrogen bonds to the oxygen in the next layer of clay. As a result kaolinite does
not swell in water and has a low specific surface area, and as almost no isomorphic substitution has occurred it has a low CEC. Where rainfall is high, acid
soils selectively leach more silica than alumina from the original clays, leaving kaolinite. Even heavier weathering results in sesquioxide clays.[91
6. Amorphous clays
• Amorphous clays are young, and commonly found in volcanic ash. They are
mixtures of alumina and silica which have not formed the ordered crystal shape of
alumino-silica clays which time would provide. The majority of their negative
charges originates from hydroxyl ions, which can gain or lose a hydrogen ion (H+) in
response to soil pH, and hence buffer the soil pH. They may have either a negative
charge provided by the attached hydroxyl ion (OH-), which can attract a cation, or
lose the hydrogen of the hydroxyl to solution and display a positive charge which
can attract anions. As a result they may display either high CEC, in an acid soil
solution, or high anion exchange capacity, in a basic soil solution.[91]
7. Sesquioxide clays
• Sesquioxide clays are a product of heavy rainfall that has leached most of the
silica and alumina from alumino-silica clay, leaving the less soluble oxides of iron
Fe2O3 and iron hydroxide (Fe(OH)3) and aluminium hydroxides (Al(OH)3). It takes
hundreds of thousands of years of leaching to create sesquioxide clays. Sesqui is
Latin for "one and one-half": there are three parts oxygen to two parts iron or
aluminium; hence the ratio is one and one-half. They are hydrated and act as either
amorphous or crystalline. They are not sticky and do not swell, and soils high in
them behave much like sand and can rapidly pass water. They are able to hold large
quantities of phosphates. Sesquioxides have low CEC. Such soils range from yellow
to red in colour. Such clays tend to hold phosphorus tightly rendering them
unavailable for absorption by plants.[92][93]
8. Plant nutrients, their chemical symbols, and the ionic
forms common in soils and available for plant uptake
Element
Symbol
Ion or molecule
Carbon
C
CO2 (mostly through leaves)
Hydrogen
H
H+, HOH (water)
Oxygen
O
O2-, OH -, CO32-, SO42-, CO2
Phosphorus
P
H2PO4 -, HPO42- (phosphates)
Potassium
K
K+
Nitrogen
N
NH4+, NO3 - (ammonium, nitrate)
Sulfur
S
SO42-
Calcium
Ca
Ca2+
Iron
Fe
Fe2+, Fe3+ (ferrous, ferric)
Magnesium
Mg
Mg2+
Boron
B
H3BO3, H2BO3 -, B(OH)4 -
Manganese
Mn
Mn2+
Copper
Cu
Cu2+
Zinc
Zn
Zn2+
Molybdenum
Mo
MoO42- (molybdate)
Chlorine
Cl
Cl - (chloride)
9. Micronutrients
• Micronutrients include iron, manganese, zinc, copper, boron, chlorine and
molybdenum. The term refers to plants' needs, not to their abundance in soil. They
are required in very small amounts but are essential to plant health in that most are
required parts of some enzyme system which speeds up plants' metabolisms. They
are generally available in the mineral component of the soil, but the heavy
application of phosphates can cause a deficiency in zinc and iron by the formation
of insoluble zinc and iron phosphates. Iron deficiency may also result from
excessive amounts of heavy metals or calcium minerals (lime) in the soil. Excess
amounts of soluble boron, molybdenum and chloride are toxic.[125]
10. Non-essential nutrients
• Nutrients which enhance the health but whose deficiency does not stop the
life cycle of plants include: cobalt, strontium, vanadium, silicon and
nickel.[citation needed] As their importance are evaluated they may be added to the
list of essential plant nutrients
11. Organic matter
• acre of soil may include 900 lb of earthworms, 2400 lb of fungi, 1500 lb of
bacteria, 133 lb of protozoa and 890 lb of arthropods and algae.[126]
• A small part the organic matter is made of the living cells such as bacteria,
molds, and actinomycetes that work to break down the organic matter. Were
it not for the action of these micro-organisms, the entire carbon dioxide part
of the atmosphere would be sequestered as organic matter in the soil.
• There are three major classes of organic matter in the soil, polysaccharides,
lignins, and proteins
12. Humus
• Humus refers to organic matter that has been decomposed by soil flora and fauna
to the point where it is resistant to further breakdown. Humus usually constitutes
only five percent of the soil or less by volume, but it is an essential source of
nutrients and adds important textural qualities crucial to soil health and plant
growth. Humus also hold bits of undecomposed organic matter which feed
arthropods and worms which further improve the soil. The end product, humus, is
soluble in water and forms a weak acid that can attack silicate minerals.[128] Humus
has a high cation exchange capacity that on a dry weight basis is many times greater
than that of clay colloids. It also acts as a buffer, like clay, against changes in pH and
soil moisture.
13. Climate and organics
• The production, accumulation and degradation of organic matter are greatly
dependent on climate. Temperature, soil moisture and topography are the major
factors affecting the accumulation of organic matter in soils. Organic matter tends
to accumulate under wet or cold conditions where decomposer activity is impeded
by low temperature[131] or excess moisture which results in anaerobic conditions.[132]
Conversely, excessive rain and high temperatures of tropical climates, will allow
microbes to destroy organic matter and the nutrients to be leached from the soil to
the point that the humus and nutrients essentially does not exist. Excessive slope
may encourage the erosion of the top layer of soil which holds most of the raw
organic material that would otherwise eventually become humus.