This document discusses hexenuronic acid (HexA) in pulping and bleaching. HexA is formed during pulping and increases bleaching chemical consumption. Removing HexA through acid hydrolysis prior to bleaching can reduce costs by 50% and allow for higher brightness. However, acid treatment may reduce pulp yield by 1-2%, which is a concern.
Exton Consulting - Etude Jeunes Européens et services financiersNathalie Pigault
Les jeunes sont-ils devenus moins fidèles que leurs aînés ? Veulent-ils du 100 % digital ? Sont-ils prêts à se passer des acteurs traditionnels ? Que pensent-ils plus généralement de leur banque et de leur conseiller ?
L’étude « les jeunes Européens de 16-29 ans et les services financiers », menée par Exton Consulting, porte sur cinq pays : France, Allemagne, Espagne, Italie et Royaume-Uni, avec plus de 2 800 jeunes interrogés. Elle a permis d’évaluer les écarts de comportement et d’usage entre les jeunes Européens vis-à-vis de leurs banques, et de mettre en exergue les principales évolutions de perception et de comportement des jeunes Français depuis notre première étude sur ce sujet.
Exton Consulting - Etude Jeunes Européens et services financiersNathalie Pigault
Les jeunes sont-ils devenus moins fidèles que leurs aînés ? Veulent-ils du 100 % digital ? Sont-ils prêts à se passer des acteurs traditionnels ? Que pensent-ils plus généralement de leur banque et de leur conseiller ?
L’étude « les jeunes Européens de 16-29 ans et les services financiers », menée par Exton Consulting, porte sur cinq pays : France, Allemagne, Espagne, Italie et Royaume-Uni, avec plus de 2 800 jeunes interrogés. Elle a permis d’évaluer les écarts de comportement et d’usage entre les jeunes Européens vis-à-vis de leurs banques, et de mettre en exergue les principales évolutions de perception et de comportement des jeunes Français depuis notre première étude sur ce sujet.
"Defining manners for a digital age"
A talk I presented at Reboot 9 about what interaction and application design can learn from considering mannered interactions (amongst other things).
Photo-Oxygenated Derivatives from EugenolEditor IJCATR
Photo-oxygenation reaction was performed on eugenol (1) (2- methoxy-4-(2'-propenyl) phenol) in chloroform as a solvent and tetraphenyl porphrine (TPP) as singlet oxygen sensitizer. Irradiation of the reaction mixture was carried out by sodium lamp at -20 °C for six hrs., during which dry oxygen was allowed to pass through the reaction mixture. Two hydroperoxides (3) and (4) were formed. Eugenol methyl ether (2) was also photo-oxygenated under the same conditions of eugenol, where only the side chain was photo-oxygenated at position C-1' to give product (5). In addition to the epoxide derivative of eugenol methyl ester (8) was prepared and its reaction with aminoantipyrine was carried out to give product (9). Product (8) could be considered as a DNA- alkylating agent.
Photo-Oxygenated Derivatives from EugenolEditor IJCATR
Photo-oxygenation reaction was performed on eugenol (1) (2- methoxy-4-(2'-propenyl) phenol) in
chloroform as a solvent and tetraphenyl porphrine (TPP) as singlet oxygen sensitizer. Irradiation of the reaction
mixture was carried out by sodium lamp at -20 °C for six hrs., during which dry oxygen was allowed to pass
through the reaction mixture. Two hydroperoxides (3) and (4) were formed. Eugenol methyl ether (2) was also
photo-oxygenated under the same conditions of eugenol, where only the side chain was photo-oxygenated at
position C-1' to give product (5). In addition to the epoxide derivative of eugenol methyl ester (8) was prepared
and its reaction with aminoantipyrine was carried out to give product (9). Product (8) could be considered as a
DNA- alkylating agent
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Visible light assisted photocatalytic reduction of CO2 using a graphene oxide...Pawan Kumar
A new heteroleptic ruthenium complex containing 2-thiophenyl benzimidazole ligands was synthesized using a microwave technique and was immobilized to graphene oxide via covalent attachment. The synthesized catalyst was used for the photoreduction of carbon dioxide under visible light irradiation without using a sacrificial agent, which gave 2050 μmol g−1 cat methanol after 24 h of irradiation
PFOS : perfluoro-octanesulfonic acid
PFOA : perfluoro-octanoic acid
HFPO-DA : hexafluoropropylene oxide dimer acid
Order Now : (paperback) → https://amz.run/5A69
The “Handbook for Chemical Engineers and Entrepreneurs” is part of Chemiprobe project that aims to visualize the chemical value chain and turn chemical engineers into «chempreneurs» pursuing clear opportunities in commodities and fine chemicals.
https://www.chemiprobe.com
Synthesis and characterization of resin copolymer derived from cardanol-furfu...ijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
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Bob Boule
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https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
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.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
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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
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
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This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
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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.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
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Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
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We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
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Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
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GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
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https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
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Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
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Charlie Greenberg, Host
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Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
2. Presentation Outline
Hexenuronic Acid (HexA)
Properties of Hexenuronic Acids
Chemical reactivity of Hexenuronic Acids
Effects of HexA in pulping
Removal of HexA
Effects of HexA Removal on Pulp Yield
3. Hexenuronic Acid (HexA)
Formed by base catalyzed elimination of methanol from 4-O-methyl-D-
glucurnoxylans during pulping, which are randomly distributed on both sides
of xylan main chain.
Such reaction rapidly takes place during the heating phase at early stages of
pulping, between 110 – 150ºC at pH 12 13
4. Amount of HexA in Pulps:
REACTIVE COMPONENTS OF OXYGEN DELIGNIFIED KRAFT PULPS
Softwood pulp Hardwood pulp
Lignin ~ 2 % ~ 1 %
HexA < 0.5 % < 1 %
Transition metals < 0.01 % < 0.01 %
Polysaccharides ~ 97 % ~ 98 %
Hexenuronic acid groups in pulps can be quantified by selective
hydrolysis in formic acid-sodium formate buffer followed by UV
spectroscopy of the formed 2-furoic acid at 245 nm (Vuorinen et al. 1999).
5. Properties of Hexenuronic Acids
Heat
Brightness reversion
Uncoloured
Oxidized by permanganate
Cation binding capacity
7. Effects of HexA in pulping
Increased consumption of bleaching chemicals
a) Chlorine Dioxide
b) Ozone
c) Peroxide (when combined with ozone bleaching)
d) Peracetic acid
Can increase kappa number
Brightness reversion
Can retain metal ions
8. Removal of HexA
The HexA groups generally suffer electrophilic and nucleophilic attacks,
and could be removed by strong acids.
According to Vuorinen et al., optimal HexA removal conditions were
achieved using a pH 3.0 - 3.5 solution, at 85-115oC for 2 - 4h.
Acid catalyzed hydrolysis of HexA was shown to release HexA from the
fiber ultimately yielding 2-furoic acid and 5-carboxy-2-furaldehdye
9. Removal of HexA
Peroximonosulphuric acid (Ps) is a low cost and selective agents for
HexA removal.
Ps is a peracid derived from hydrogen peroxide when a hydrogen atom
is replaced by a SO3H group.
In Elemental Chlorine-Free (ECF) bleaching of kraft pulp, an acid
hydrolysis stage prior to final stage could lead to a 50% reduction in
bleaching costs.
The elimination of HexA in kraft pulps is also beneficial to Totally
Chlorine Free (TCF) pulp bleaching operations and allowed for higher
brightness values to be achieved.
10. Effects of HexA Removal on Pulp Yield
The effect of the hot acid treatment on pulp yields remains an issue of
extreme concern.
Early research activities had noted that experimental yields for treating
kraft pulps with formic acid/sodium formate buffer (pH 3) at 100oC were
usually in the range 98 – 98.6% (Ragauskas et al.).