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DVS Application Notes
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Surface Measurement Systems Ltd.
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Surface Measurement Systems North America
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SMS Instruments Pvt. Ltd. (India)
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Mijndert van der Spek is an Associate Professor at Heriot-Watt University with a track record in process design and optimization of CO2 capture, utilisation, and storage, and direct air capture technologies and systems, using process simulation, techno-economic assessment and advanced uncertainty analysis to inform decision making on the feasibility of technologies and processes. Mijndert has a keen interest in adsorption-based CO2 capture, notably from the air. He is the principal or co-investigator on several UK and EU funded research projects, the vice-chair of the EU networking Action TrANsMIT, Associate Editor for the journal Frontiers in Climate and member of the IEAGHG Cost Network where he led activities on new guidelines for technoeconomic assessment.
Ahmed is a Senior Lecturer of Thermal-Fluid Sciences in Mechanical Engineering and Principal Investigator of the Energy and Bioproducts Research Institute (EBRI) and Materials Research (AIMR) groups at Aston University. His PhD in adsorption cooling systems was awarded in December 2012. He has extensive first-hand research experience in thermal systems modelling and optimisation. He developed several adsorption systems modelling approaches, which other researchers have widely adopted. Ahmed published several impactful journal papers. His current research areas encompass the development of advanced sorption composites for sorption heat storage, cooling and water desalination applications. According to the google scholar metric, Ahmed’s research has an h-Index of 13 and a citation score of 832, the majority about sorption technology for the previously mentioned applications.
Ahmed was involved in other research activities, including engine and powertrain modelling and optimisation; turbomachinery 3D Computational Fluid Dynamic (CFD) modelling. He also is the director of the MSc Future Vehicle Technologies course at Aston University.
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What we collect
We may collect the following information:
• name and job title
• contact information including business email address or personal email address (if and only supplied by you)
• demographic information such as professional affiliation, business address, post code, business telephone numbers, preferences and interests
What we do with the information we gather
We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:
• We may use the information to improve our products and services
• We may periodically send emails about scientific publications, new products and application notes and case studies, scientific events or other information which we think you may find interesting and according to your preference using the email address which you have provided.
• If you are a customer, from time to time, we may also use your information to contact you for customer satisfaction survey purposes. We may contact you by email, phone or mail.
• We may also use the information to customise the website according to your interests.
• The information is stored in a centralised system in our headquarter in United Kingdom and only authorised personnel has access to it, this is controlled and managed through a CRM system also hosted in United Kingdom.
We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect.
Controlling your personal information
You may choose to restrict the collection or use of your personal information in the following ways:
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You may request details of personal information, which we hold about you under the General Data Protection Regulation (GDPR) by EU. If you would like a copy of the information held on you please write to [email protected] or Surface Measurement Systems Ltd. Unit 5 Wharfside Rosemont Road, Alperton, London, HA0 4PE, United Kingdom. Please allow us within one (1) month from date of receipt to provide the information.
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Browsing the websites
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• From time to time this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s).
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Last updated, 18 May 2018.
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What personal information do we collect from the people that visit our website?
When ordering or registering on our site, as appropriate, you may be asked to enter your name, email address, mailing address, phone number, Work address or other details to help you with your experience.
When do we collect information?
We collect information from you when you register on our site, subscribe to a newsletter, respond to a survey, fill out a form, Open a Support Ticket or enter information on our site.
How do we use your information?
We may use the information we collect from you when you register, make a purchase, sign up for our newsletter, respond to a survey or marketing communication, surf the website, or use certain other site features in the following ways:
• To personalize your experience and to allow us to deliver the type of content and product offerings in which you are most interested.
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• To administer a contest, promotion, survey or other site feature.
• To send periodic emails regarding your order or other products and services.
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How do we protect your information?
• We do not use vulnerability scanning and/or scanning to PCI standards.
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• All information are kept in our head quarter in United Kingdom and only authorized persons have accessed to it.
Your personal information is contained behind secured networks and is only accessible by a limited number of persons who have special access rights to such systems, and are required to keep the information confidential. In addition, all sensitive/credit information you supply is encrypted via Secure Socket Layer (SSL) technology.
We implement a variety of security measures when a user enters, submits, or accesses their information to maintain the safety of your personal information.
All transactions are processed through a gateway provider and are not stored or processed on our servers.
Do we use ‘cookies’?
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If you turn cookies off, some of the features that make your site experience more efficient may not function properly that make your site experience more efficient and may not function properly.
• We do not sell, trade, or otherwise transfer to outside parties your Personally Identifiable Information.
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According to CalOPPA, we agree to the following:
• Users can visit our site anonymously.
COPPA (Children Online Privacy Protection Act)
When it comes to the collection of personal information from children under the age of 13 years old, the Children’s Online Privacy Protection Act (COPPA) puts parents in control. The Federal Trade Commission, United States’ consumer protection agency, enforces the COPPA Rule, which spells out what operators of websites and online services must do to protect children’s privacy and safety online.
We do not specifically market to children under the age of 13 years old.
Fair Information Practices
The Fair Information Practices Principles form the backbone of privacy law in the United States and the concepts they include have played a significant role in the development of data protection laws around the globe. Understanding the Fair Information Practice Principles and how they should be implemented is critical to comply with the various privacy laws that protect personal information.
In order to be in line with Fair Information Practices we will take the following responsive action, should a data breach occur:
• We will notify you via email within 7 business days
We also agree to the Individual Redress Principle which requires that individuals have the right to legally pursue enforceable rights against data collectors and processors who fail to adhere to the law. This principle requires not only that individuals have enforceable rights against data users, but also that individuals have recourse to courts or government agencies to investigate and/or prosecute non-compliance by data processors.
CAN SPAM Act
The CAN-SPAM Act is a law that sets the rules for commercial email, establishes requirements for commercial messages, gives recipients the right to have emails stopped from being sent to them, and spells out tough penalties for violations.
We collect your email address in order to:
• Send information, respond to inquiries, and/or other requests or questions
• Process orders and to send information and updates pertaining to orders.
• Send you additional information related to your product and/or service
• Send you white paper or invite you to join scientific events
• Contact our customers for satisfaction survey in order to improve our services with them.
The communication to our customers may continue after the original transaction has occurred for the above purposes. Nevertheless, you can opt-out to any of these informations at any time by informing us.
To be in accordance with CANSPAM, we agree to the following:
• Not use false or misleading subjects or email addresses.
• Identify the message as an advertisement in some reasonable way.
• Include the physical address of our business or site headquarters.
• Monitor third-party email marketing services for compliance, if one is used.
• Honor opt-out/unsubscribe requests quickly.
• Allow users to unsubscribe by using the link at the bottom of each email.
If at any time you would like to unsubscribe from receiving future emails, you can email us at [email protected] or write to the address provided below, and we will promptly remove you from ALL correspondence upon receipt of the request.
Surface Measurement Systems NA
2125 28th Street SW, Suite 1, Allentown, PA 18103
Last Edited on April 27, 2018
To explore the latest news and research in sorption science, subscribe to Surface Measurement Systems’ Newsletter.
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Free workshops, trainings, webinars and scientific events regarding the latest developments in sorption scienceApplication notes, white papers and case studies on dynamic vapour sorption and inverse gas chromatographyLatest news, product information and sorption science bulletins with peer-reviewed articles on chromatographic and gravimetric sorption methodsFor customer, we may periodically contact you to evaluate your satisfaction via questionnaire for the products and services you get from us
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The term Surface Measurement Systems or ‘us’ or ‘we’ refers to the owner of the website whose registered office is Unit 5 Wharfside Rosemont Road, Alperton, London, HA0 4PE. Our company registration number is 2448058. The term ‘you’ refers to the user or viewer of our website.
• All trade marks reproduced in this website which are not the property of, or licensed to, the operator are acknowledged on the website.
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The measurement of water activity (Aw) is a very important metric in the food industry. It is used by food manufacturers and government agencies to evaluate the quality of food ingredients and to predict a product’s potential shelf life. The most widely used method to determine Aw is the measurement of water vapour pressure emanating from a food material enclosed in a sealed chamber. This application note demonstrates a possible alternative to the traditional method employed by industry and describes advantages that may be gained by this new procedure.
To continue reading download the full application note using the form below.
Biomass, such as wheat straw is an abundant and inexpensive natural biopolymer rich in cellulose and hemicellulose  which can be converted into bio-fuel. The bio-fuel has been attracting attention due to the future potential shortages of fossil fuel [2,3]. One of the crucial steps of producing bio-ethanol from wheat straw is its pre-treatment which should facilitate the economic feasibility and yield efficient conversion into biofuel. This pre-treatment is expected to increase the accessible chemical sites of the straw to increase convertibility in subsequent hydrolysis and fermentation steps. Dynamic Vapour Sorption (DVS)  and UV were used to assess the wheat straw pre-treatment and sugar yield, respectively.
Raman spectroscopy is a widely used physical characterization technique used in the pharmaceutical industry. The combination of Raman spectroscopy and Dynamic Vapour Sorption (DVS) allows for a more complete understanding of vapour-solid interactions for pharmaceutical materials as it relates to structural properties. This paper overviews the DVS-Raman capabilities and gives several examples.
DVS is now established as a useful analytical tool in many R&D laboratories throughout the world. This application note describes the integration of DVS with a colour video microscope for the in-situ visualisation of moisture induced morphological transformations, which may be correlated with the gravimetric data.
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Validation of humidity generation and measurement in gravimetric vapour sorption instrumentation is an important issue for the pharmaceutical and related industries. This application note sets out a standard DVS method for validation of relative humidity data using saturated salt solutions.
This application note gives a brief description of the technique, the instrument and some examples of its
application within pharmaceutical physico-chemical analysis.
The surface properties of powders and fibres are important parameters in the handling and performance of a wide range of solid materials. iGC SEA has been specifically designed to address many of the issues faced by physical properties researchers, including fully automated operation and the ability to measure samples in a controlled humidity environment. This Application note gives a brief description of the technique, the instrument and some examples of its application to a range of polymeric materials analysis problems.
Dynamic Vapour Sorption (DVS) has long been used for investigating the interaction of water and organic vapours with solid materials. The versatility and impact of DVS has particular importance in the study of building materials. This overview application note summarises several examples of using DVS to study cements, wood, insulation, and other building materials.
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The Dynamic Vapour Sorption(DVS) provides potential benefit over the COST 90 procedure. This application note compares DVS Results to COST 90 procedure.
In the present paper dispersive surface energies and specific free energies have been calculated for different modified E-glass fibre surfaces. Both different sizing and different polymer coatings have been investigated to consider changes in the surface chemistry and surface energy during different fibre treatments.
Finite concentration IGC SEA is a useful tool for the investigation of surface and pore properties. A novel combination of finite concentration IGC SEA and thermal desorption provides the possibility to separate micropore adsorption from surface and mesopore adsorption. This allows the calculation of BET values with physical relevance for highly microporous materials and the consideration of molecular sieve effects.
The glass transition temperature Tg is an important property for the characterisation of polymeric, food, pharmaceutical and many natural products. iGC SEA can provide a fast and accurate determination of this property as well as its dependence on relative humidity. This paper describes the characterisation of maltose with decane at infinite dilution.
The surface energy is a useful parameter describing the energetic properties of the surface of a solid sample. It can be determined in a fast and accurate way by IGC SEA. This paper describes the measurement of the dispersive component of the surface energy of Paracetamol.
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