Hypersensitivity reaction - PowerPoint PPT Presentation

The Canizzaro reaction involves the disproportionation of aldehydes in the presence of a strong base to produce an alcohol and a carboxylic acid. This experiment, supervised by Lecturer Israa Radhi, explores the mechanism and practical application of the reaction. Benzyl alcohol and benzoic acid, pr

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Chalcones are important unsaturated aromatic ketones that serve as biogenetic precursors of flavonoids and isoflavonoids. They have various medicinal and pharmaceutical applications due to their biological activities. Chalcones are easily synthesized compounds with potential therapeutic uses, making

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The Diels-Alder reaction is a fundamental method in organic chemistry for producing cyclic organic compounds by combining a conjugated diene with an alkene. This reaction, named after Otto Diels and Kurt Alder, involves the formation of a six-membered ring with specific bond rearrangements. Conjugat

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Chemical kinetics is a branch of physical chemistry that explores the velocity and factors influencing chemical reactions. It studies how reactants transform into products, considering conditions like temperature, pressure, and reactant concentrations. Factors affecting reaction rates include the na

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The Cannizzaro reaction is a chemical reaction involving the base-induced disproportionation of non-enolizable aldehydes to form a primary alcohol and a carboxylic acid. Discover more about this reaction, its history, mechanism, and variants like the Cross Cannizzaro reaction and Intramolecular Cann

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Benzoin condensation is a classic organic reaction where aromatic aldehydes self-condense to form α-hydroxy ketones. Dr. Atul Kumar Singh, an Assistant Professor of Chemistry, details the mechanism and the specific catalytic properties of cyanide in this reaction. The reaction involves refluxing th

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This practical investigation focuses on determining if practice can reduce human reaction times by conducting a ruler drop test. Participants use their weaker hand to catch a ruler dropped by their partner, aiming to improve their reaction time with practice. The experiment explores how athletes can

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Antigen-antibody precipitation reaction involves the formation of insoluble products when a soluble bivalent antibody interacts with a soluble antigen. This reaction leads to the formation of a visible precipitate known as a lattice. The mechanism of precipitation, including the prozone phenomenon,

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The kinetic reaction of sulphite ions and iodate in the Landolt reaction is a fascinating chemical process where slow and fast reactions occur sequentially, resulting in a visually striking color change. By monitoring the induction period between the two reactions, one can observe the formation of h

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Anaphylaxis is a severe allergic reaction affecting the entire body, while anaphylactic shock is a life-threatening manifestation of this reaction involving shock and airway swelling. This comprehensive material delves into the nature, causes, symptoms, diagnostic features, emergency management prot

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Chemical kinetics involves studying reaction rates, rate laws, stoichiometry, and factors affecting reaction speed. This branch of chemistry delves into determining reaction orders, rate constants, and activation energies using various methods. Different types of rates, such as initial, instantaneou

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The Prins-Pinacol reaction involves a two-step process starting with the Prins reaction and followed by the Pinacol rearrangement. This reaction, discovered in 1919 by Hendrick J. Prins, is a crucial transformation in organic chemistry, leading to the formation of important carbonyl compounds. The m

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Kinetics is the study of reaction rates and factors affecting them, such as concentration, temperature, catalysts, and more. Orders of reaction classify reactions based on rate dependency on reactant concentration. Factors like pH, light, and solvents can also impact reaction rates. Half-life and sh

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Aldol condensation is a key reaction for preparing benzalacetophenone, also known as chalcones. Chalcones are unsaturated aromatic ketones with various medicinal applications, showcasing activities like anti-diabetic, anti-inflammatory, and anti-bacterial effects. The reaction involves combining ben

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Chemical kinetics is a branch of chemistry focused on studying reaction rates and mechanisms. Unlike thermodynamics, which deals with feasibility, kinetics explores the speed at which reactions occur. Factors such as temperature, pressure, and catalysts influence reaction rates. Understanding the ra

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Hypersensitivity in immunology refers to an altered immune response against antigens, leading to hyperreactivity and immunopathology. This article delves into the different categories of adaptive hypersensitivities, focusing on Immediate (Type I), Antibody-Mediated Cytotoxic (Type II), and Immune Co

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The Baeyer-Villiger oxidation is a key organic reaction that transforms ketones into esters or cyclic ketones into lactones using peroxyacids. The mechanism involves protonation of the carbonyl group and migration of substituents. Migration aptitude in this reaction determines the regioselectivity,

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Hypersensitivity reactions occur in sensitized hosts following contact with specific antigens, leading to injurious consequences. The Gell and Coombs Classification categorizes reactions into Type I, II, III, and IV based on immune response and duration. Type I reactions are immediate and humoral, w

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Functional GI disorders encompass a range of conditions affecting the gastrointestinal system, such as irritable bowel syndrome and disorders of the gut-brain interaction. These disorders are characterized by no structural abnormalities but are influenced by factors like motility disturbance, viscer

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This research focuses on using a kinetic global model framework to identify relevant reactions in chemically complex plasma systems. The framework, KGMf, enables the investigation of macroscopic plasma characteristics by analyzing reaction pathways, sensitivity to reaction rate errors, and dominant

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Explore the kinetic reactor module in Chemcad for reaction rate specification using VBA. Learn how to determine parameter values and analyze reactions such as steam reforming and water gas shift. Follow step-by-step instructions to run the unit operation, view reactor profiles, and compare reaction

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This educational material delves into the concepts of free energy, reaction quotients, and equilibrium constants in chemical systems. It explains how to determine the direction of a reaction based on Q and K values, elucidates the role of Gibbs free energy in determining spontaneity, and provides ca

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In second language research, the focus on implicit versus explicit processing is crucial for theory and pedagogy. Research by Batterink et al. (2014) explored L2 learning without awareness, revealing varied effects on reaction times and ERP responses based on participants' awareness of hidden gramma

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The Grignard Reaction Part 1 in Chemistry 318 Fall 2018 involves the preparation of the Grignard reagent, its reaction with CO2, and the isolation of the benzoic acid product. The experiment spans two lab sessions, focusing on safety precautions, pre-lab checks, and upcoming due dates. Students are

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Chemical Reaction Engineering (CRE) focuses on studying the rates and mechanisms of chemical reactions, as well as designing reactors for these reactions. The field involves understanding balances in terms of molar flow rates, mole balances, rate laws, stoichiometry, and membrane reactors. Membrane

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The humoral basis of immunity involves the specific reaction between antigens and antibodies, resulting in the formation of insoluble precipitates through a process called precipitation. This reaction plays a crucial role in immune responses against infectious diseases, influenced by factors like af

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The Redox-Relay Heck Reaction is a powerful tool in organic synthesis that allows for the functionalization of olefins with aryl groups. Developed by Sigman and colleagues, this reaction involves a palladium-catalyzed relay controlled by a thermodynamic sink, leading to the formation of aldehydes or

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Exploring the fundamental concepts of chemical kinetics, this content delves into reaction rates, collision theory, and activation energy in chemical reactions. It emphasizes the importance of particle collisions, correct orientation, and energy requirements for reactions to occur. Through energy di

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Organic chemistry students learn about the Aldol condensation reaction involving ketones and aldehydes. The experiment involves the reaction of acetone with benzaldehyde catalyzed by sodium hydroxide to form a trans, trans-isomer. The reaction is illustrated step by step, from the formation of the e

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The synthesis of banana oil involves a reaction between carboxylic acid and alcohol catalyzed by H2SO4 to produce isoamyl acetate. The mechanism includes nucleophilic acyl substitution with two main reaction steps - addition and elimination. The process shifts the equilibrium to favor product format

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Kinetics is the study of reaction rates and factors affecting them. Reaction rate is the speed at which a reaction occurs, influenced by factors like concentration, temperature, pH, light, catalysts, and solvents. Reactant concentration determines reaction order, which categorizes reactions as zero-

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A common gastrointestinal disorder characterized by chronic abdominal pain and altered bowel habits. This disorder, diagnosed based on Rome III criteria, has no specific markers and is believed to result from various factors affecting motility and food allergy. Learn about the subtypes of IBS, its u

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A tetrameric enzyme derived from Erwinia chrysanthemi, used as an antineoplastic agent for patients with acute lymphoblastic leukemia. It reduces circulating asparagine levels, affecting leukemic cell survival. Administered intramuscularly, Erwinaze may cause hypersensitivity reactions and pancreati

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This critically appraised topic explores the impact of vestibular rehabilitation on reaction time post mild traumatic brain injuries. It delves into the importance of reaction time in concussion rehabilitation, highlighting the potential benefits of vestibular rehabilitation programs in improving re

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Anaphylaxis is a severe allergic reaction in animals caused by hypersensitivity mechanisms. Learn about types of reactions, symptoms, and treatment options in veterinary practice.

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Anaphylaxis is a severe, life-threatening hypersensitivity reaction that requires quick and effective management to ensure patient safety. Recognizing the symptoms, such as airway, breathing, and circulation issues along with skin changes, is crucial for prompt intervention. Learn about the nuts and

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Chemical Reaction Engineering (CRE) delves into understanding the rates and mechanisms of chemical reactions, along with reactor design principles. This field explores how different variables impact reaction kinetics and optimal reactor configurations for efficient processes. Studying CRE involves a

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Hypersensitivity reactions and allergies are discussed, focusing on the four types of hypersensitivities, immunological mechanisms, harmful effects, and predisposing factors. The lecture covers allergic reactions, IgE-dependent reactions, and the sequence of events in immediate hypersensitivity resp

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Chemical reactions occur at different rates, with reactions being classified as fast or slow. The study of reaction rates, known as Kinetics, involves examining factors that affect rates and controlling them. Rate expressions are mathematical representations of reaction rates, typically expressed in

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In organic chemistry, the SN2 and E2 reactions are fundamental concepts that dictate reaction outcomes. These reactions involve nucleophilic substitution and elimination mechanisms, respectively. Understanding the differences between SN2 vs. E2 reactions is crucial for predicting product formation a

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