The document discusses the yellowing of textiles due to atmospheric pollutants over the past few decades. It identifies over 20 ways that white or pale textiles can undergo this undesirable color change. Specific factors that contribute include exposure to pollutants like phenols, nitrogen oxides, moisture, packaging materials, and ultraviolet radiation. The yellowing effect can destroy indigo dyes and cause discoloration of textiles.
Carbon Monoxide is also known as silent killer because it has no taste, odor and smell. Carbonmonoxidekills.com helps you to recover from carbon monoxide poisoning.
Carbon Monoxide is also known as silent killer because it has no taste, odor and smell. Carbonmonoxidekills.com helps you to recover from carbon monoxide poisoning.
Atmospheric ozone protects the Earth and its inhabitants from the harmful ultraviolet radiation of the Sun. Without this protective layer, more ultraviolet radiation would reach the surface of the Earth and cause damage to plant, animal and human life. This module explains the importance of ozone, the causes of its depletion and the effects expected on earth's systems.
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UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
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UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
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Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
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Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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:
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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:
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UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
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1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
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Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
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Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024
Aquasorb OZ
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3. YELLOWING OF TEXTILES DUE TO ATMOSPHERIC POLLUTANTS Over the past two three decades the problem of yellowing of textiles has become progressively more widespread. It would be wrong to regard yellowing as a phenomenon arising from a single cause. There are more than 20 different ways in which white or pale-coloured textiles can undergo this undesirable change in appearance.
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5. The critical factors identified are: The interior of the pile is protected against detrimental influences by its relative inaccessibility. Due to the extreme ring dyeing of the warp yarn, the indigo dyestuff situated on the surface is highly accessible to noxious gases, such as NO x and O 3 . This phenomenon is, for instance, observed when looking at the folded edges of made-up jeans. In a pile of folded jeans, the folded edges are particularly affected since they are especially exposed to light & air.
6. ATTACKING AGENTS Ozone O 3 : Ozone is the strongest oxidizing agent after fluorine. In organic chemistry it serves to detect C-C double bonds. The general bleaching effect of ozone on indigo is well-known. Therefore the indigo dyestuff is also used as an indicator dyestuff in detection systems (e.g. Drager) which serve to measure the ozone concentration. Nitrogen oxides No x : Nitrogen oxides are also referred to as “nitrous gases”. Nitrogen oxides are mainly composed on nitrogen monoxide & nitrogen dioxide. They are known to be highly aggressive agents.
7. PROBLEMS CAUSED, AMONGST OTHERS, BY NOXIOUS GASES : Yellowing of optical brighteners due to nitrogen oxides / ozone. Destruction of natural rubber by ozone Changes of shade caused by nitrogen oxides Yellowing of polyurethane fibres due to nitrogen oxides & sulphur dioxide Destruction of indigo by ozone and nitrogen
8. COUNTER - MEASURES : Storage of the textiles in a controlled environment. Optimum ventilation of the store rooms (circulating air). No x is heavier than air and accumulates on the ground. Packing e.g. in polyethylene foil that does not contain any migrating, light-inhibiting stabilizers. Do not expose goods to sunlight. Protective finishing with AQUASORB-OZ & Powersil-NOZ
9. MECHANISM OF YELLOWING OF INDIGO-DYED TEXTILES DUE TO AIR POLLUTANTS, SUCH AS OZONE & NITROGEN OXIDES Ultraviolet radiation UV ozone O 3 nitrogen oxides No x . Short wavelength portion partly formed of the sunlight by UV & No x e.g. from the combustion of fossil fuels photochemical smog formation of aggressive radicals Radical attack against the double-bonded, conjugated indigo system
10. H H Indigo Formation of peroxide & other radicals destruction of the C-C double bond formation of mostly yellow degradation products are N COOH H H N O O Phenylglycine (Colourless) Isatine (Yellow) N N O O