Zinc presentation

Sep 21, 2012Download as pptx, pdf11 likes19,143 views

danielfrech

This powerpoint presentation is about the mineral "zinc".

What is Zinc
 Zinc is a mineral that is in some foods such as oysters
and beef.

 Zinc is a silvery metal that is a constituent (a whole)
brass.

 It is used coating iron and steel to protect from
corrosion.

Fig. 1 Fig. 2

In What Foods is Zinc Found?

Fig. 4

Fig. 3 Fig. 5

Why do we need it
 Zinc plays a vital role in bringing the vitamin A from the
liver to the retina.

 It helps Build and Repair our Cells and Tissues.
 Zinc helps us Digest our food.
 Zinc helps us maintain strong and healthy bones.

Fig. 6

Deficiency of Zinc
 Zinc is an essential mineral to a few of your major body
systems.

 Deficiency of zinc can lead to delayed growth and
impaired ability to fight infections.

 Deficiency of zinc can also decrease your ability to
absorb nutrients.

Fig. 7

Fun Fact
 Zinc has been used for over 2,500 years!
 Over 50 countries produce zinc, the largest being
China!

 Zinc can help you stay young!

Fig. 8

Thank you for
listening

Work Cited (Pictures)
Fig. 1: http://en.wikipedia.org/wiki/Zinc

Fig. 2: http://www.in.all.biz/g222843/

Fig. 3: http://www.aoa.org/x11848.xml

Fig. 4: http://thenextweb.com/apps/2011/02/12/love-oysters-check-out/

Fig. 5: http://www.bbcgoodfood.com/content/knowhow/glossary/beef/

Fig. 6: http://fitnessshopblog.com/tag/diet-health/

Fig 7: http://www.toptenz.net/top-10-legendary-small-people.php

Fig 8: http://dollardaze.org/blog/?post_id=00044

This document summarizes information about zinc, including its dietary sources, recommended daily allowances, physiological functions, deficiency, and treatment. Some key points include: - Zinc is an essential micronutrient found in high amounts in oysters, meat, and nuts. It plays roles in over 300 enzymes and 2000 transcription factors. - Recommended daily zinc intake ranges from 2-11 mg per day depending on age. Pregnant and lactating women should have 11-12 mg. - Zinc deficiency can cause impaired immunity, growth retardation, skin disorders, and is common in developing countries. It is diagnosed through blood tests. - Treatment involves oral zinc supplementation, with doses ranging from 0.

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The document discusses the refining and purification process of zinc. It begins with an introduction to zinc including its chemical formula, atomic number, and color. It then discusses the history of zinc discovery and production. The main uses of zinc are then outlined, followed by global zinc production and reserve statistics. The key steps in the zinc refining and purification process are then described in detail, including roasting, leaching, purification, electrolysis, melting and casting. Gas cleaning and sulfuric acid production are also summarized. Finally, the main applications of zinc in automotive, construction, hot dip galvanizing, and zinc castings are briefly outlined.

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The document discusses zinc extraction processes. There are two main categories of processes: pyrometallurgical and hydrometallurgical. Approximately 80% of the world's zinc is produced via hydrometallurgical processes like the roast-leach-electrowin process. This process involves roasting zinc sulfide concentrate to produce zinc oxide, which is then leached and electrowon to extract zinc metal. An alternative is the pressure leach process, which combines roasting and leaching into a single step to produce zinc sulfate solution for electrowinning.

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Zinc is a micronutrient that is essential for cellular metabolism and the function of over 100 enzymes. It is absorbed in the small intestine and transported to tissues like the liver and blood cells. Zinc is lost from the body primarily through gastrointestinal excretion and helps control hormone release and nerve signaling. Zinc deficiency can cause growth retardation and skin disorders, while adequate zinc supports immune function and reduces the duration of diarrhea. Therapeutically, zinc treatment has proven highly effective for decreasing the occurrence of prolonged childhood diarrhea in developing countries.

El zinckevinydilan

El zinc es un metal blanco azulado que se encuentra ampliamente en la naturaleza. Tiene propiedades como buena conductividad eléctrica y térmica, y punto de fusión y ebullición elevados. Se utiliza principalmente para galvanizar el acero y prevenir la corrosión, y también en aleaciones como el latón. Otras aplicaciones incluyen pigmentos, baterías, monedas, fungicidas y suplementos dietéticos debido a sus propiedades antimicrobianas.

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Zinc is an essential micronutrient for plant growth. It plays important roles in carbohydrate metabolism, protein metabolism, and membrane integrity. Zinc deficiency can lead to chlorosis, necrosis, reduced growth and yield losses. Factors like high soil pH, phosphorus application, and liming can reduce zinc availability. Deficiency symptoms vary by crop but include interveinal chlorosis, small leaves, and premature leaf drop. Soil and foliar zinc application can increase dry matter production, grain yield, harvest index and zinc content of crops.

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Zinc is a trace mineral that is important for many functions in the body. The total body content of zinc is about 2 grams, with high concentrations found in the prostate gland, muscle tissue, and bone. Good dietary sources of zinc include meat, dairy products, legumes, nuts, and spinach. Zinc is required for the function of many enzymes and is involved in processes like DNA synthesis, wound healing, growth, and taste sensation. Zinc deficiency can result in issues like hypogonadism, growth failure, and skin lesions. Toxicity from excess zinc intake is rare but can cause nausea and gastrointestinal issues.

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1) The document discusses mineral metabolism, focusing on iodine and zinc. Iodine is important for thyroid hormone production and zinc serves as a cofactor for many enzymes. 2) Iodine is obtained from foods like seafood, fish, and iodized salt. The thyroid gland concentrates iodine and uses it to produce the hormones thyroxine and triiodothyronine. Iodine deficiency can cause goiter and hypothyroidism. 3) Zinc is found in foods like legumes, potatoes, and cabbage. It is a cofactor for over 300 enzymes and is important for processes like wound healing. Zinc deficiency can impair growth and immune function.

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The document discusses the evidence for using zinc supplementation in the treatment of childhood diarrhea. Zinc supplementation is now recommended as part of the global diarrhea treatment strategy based on multiple clinical trials showing it reduces diarrhea duration and severity. Zinc addresses diarrhea by maintaining gut integrity and functioning of the immune system. Proper dosage and duration of zinc treatment is important to gain its protective benefits against future diarrhea episodes. Ensuring widespread access to affordable zinc formulations is now a priority in developing countries.

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Zinc is one of the strategic non-ferrous metal next only to Aluminium and Copper. It plays a very important role in country’s economy and development. It finds use in applications like galvanizing of iron and steel; die-casting alloys, brasses, dry cells, agriculture, chemicals, pharmaceuticals etc., with industrial development in India use of zinc has increased considerably, however, specific consumption is much lower as compared to other developing countries. The most important raw material for the production of zinc is the sulphide ore from which zinc is extracted either through pyro-metallurgical route or through hydro metallurgical – Roast – Leach – Electrowin (RLE) route. At present nearly 80 - 85% of the world’s production of primary zinc is through hydrometallurgical route, the balance is through pyro – metallurgical route. Zinc’s largest use is in corrosion protection. Galvanising is the main method of protection against corrosion of steel, i.e. the steel is coated with a layer of zinc in order to protect it from decay. Brasses are alloys of copper and zinc, and they have good mechanical properties and good corrosion resistance. Diecastings are precision castings that can be mass-produced. Rolled zinc is used for architectural and building applications, and for dry cell batteries. Zinc oxide has its main use in tyres and rubber products. Many other zinc chemicals are used in a wide range of applications.

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This document discusses vitamin and mineral deficiencies. It describes the fat-soluble and water-soluble vitamins, how deficiencies can be primary or secondary, and provides details on specific vitamin deficiencies like vitamins A, D, and C. Vitamin A deficiency can cause night blindness and xerophthalmia. Vitamin D deficiency results in rickets in children and osteomalacia in adults. Scurvy is caused by vitamin C deficiency and is characterized by bone disease and hemorrhages.

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Zinc plays an important role in immunity and diarrhea. Zinc deficiency is common in acute and chronic diarrhea and leads to impaired immune function. Studies show that zinc supplementation in children with diarrhea reduces duration and severity of diarrhea episodes. It does so by accelerating regeneration of the intestinal mucosa and enhancing cellular immunity. As zinc deficiency is prevalent in developing countries, zinc supplements can be useful as both a preventive and therapeutic intervention for diarrhea.

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Trace minerals are needed in small amounts but are essential for many bodily functions. They include iron, zinc, iodine, selenium, fluoride, manganese, molybdenum, chromium, and others. Trace mineral deficiencies can impair growth, development, immunity and cognitive function, while toxicities of some like iron, fluoride, and iodine can also negatively impact health. Food content of trace minerals depends on soil mineral content where the food was grown.

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Aminoglycosides are a powerful class of antibiotics known for their rapid bactericidal action against serious Gram-negative infections. This presentation offers a comprehensive yet engaging exploration of their pharmacology, tailored specifically for medical, dental, and pharmacy students preparing for exams or looking to strengthen their clinical foundation. We begin with the fascinating history of aminoglycosides, from the discovery of streptomycin in the 1940s to the development of newer agents like amikacin and netilmicin. These drugs are natural or semi-synthetic derivatives of Streptomyces and Micromonospora species and have saved countless lives, especially in critical care settings. You’ll then dive into their mechanism of action, where aminoglycosides irreversibly bind to the 30S ribosomal subunit, causing mRNA misreading and inhibition of bacterial protein synthesis. Unlike most protein synthesis inhibitors, aminoglycosides are bactericidal—a unique trait that makes them especially valuable in treating life-threatening infections. Their entry into bacterial cells depends on oxygen and energy, which explains why they are ineffective against anaerobes and are often used in combination with beta-lactam antibiotics. This synergy enhances bacterial cell wall permeability, increasing aminoglycoside uptake and efficacy. The presentation clearly outlines the spectrum of activity—highlighting their strong effectiveness against aerobic Gram-negative bacilli like E. coli, Pseudomonas, and Klebsiella. For certain Gram-positive infections (e.g., Enterococcus, Staphylococcus), aminoglycosides serve as part of combination therapy. Each major aminoglycoside—gentamicin, tobramycin, amikacin, streptomycin, and kanamycin—is covered in terms of pharmacokinetics, dosing, and clinical use. We also discuss newer uses, such as inhaled tobramycin in cystic fibrosis and amikacin against multi-drug-resistant tuberculosis. Safety is a key part of this review. Students will understand the mechanisms behind nephrotoxicity, ototoxicity, and neuromuscular blockade, with tips on how to monitor and minimize these risks in clinical practice. Therapeutic drug monitoring (TDM) and once-daily dosing strategies are also explained, reflecting current guidelines. We also explore mechanisms of resistance—from modifying enzymes to ribosomal mutations and decreased permeability—and what this means for treatment choices in the age of antimicrobial resistance. This presentation aims to balance core pharmacological concepts with clinical relevance. Whether you’re preparing for exams, giving a seminar, or revising for practicals, this visually rich and well-organized resource will enhance your understanding of aminoglycosides and their role in modern medicine.

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Zinc presentation

1. Zinc By Edouard Miserez and Daniel Frech

2. What is Zinc  Zinc is a mineral that is in some foods such as oysters and beef.  Zinc is a silvery metal that is a constituent (a whole) brass.  It is used coating iron and steel to protect from corrosion. Fig. 1 Fig. 2

3. In What Foods is Zinc Found? Fig. 4 Fig. 3 Fig. 5

4. Why do we need it  Zinc plays a vital role in bringing the vitamin A from the liver to the retina.  It helps Build and Repair our Cells and Tissues.  Zinc helps us Digest our food.  Zinc helps us maintain strong and healthy bones. Fig. 6

5. Deficiency of Zinc  Zinc is an essential mineral to a few of your major body systems.  Deficiency of zinc can lead to delayed growth and impaired ability to fight infections.  Deficiency of zinc can also decrease your ability to absorb nutrients. Fig. 7

6. Fun Fact  Zinc has been used for over 2,500 years!  Over 50 countries produce zinc, the largest being China!  Zinc can help you stay young! Fig. 8

7. Thank you for listening Work Cited (Pictures) Fig. 1: http://en.wikipedia.org/wiki/Zinc Fig. 2: http://www.in.all.biz/g222843/ Fig. 3: http://www.aoa.org/x11848.xml Fig. 4: http://thenextweb.com/apps/2011/02/12/love-oysters-check-out/ Fig. 5: http://www.bbcgoodfood.com/content/knowhow/glossary/beef/ Fig. 6: http://fitnessshopblog.com/tag/diet-health/ Fig 7: http://www.toptenz.net/top-10-legendary-small-people.php Fig 8: http://dollardaze.org/blog/?post_id=00044