این شعر بسیار زیبا و تاثیرگذار اثر رابرت نوئل تست هست و پیشنهاد میکنم بههیچوجه خوندنش رو از دست ندید.
http://testfamilygenealogy.com/Documents/Obituaries/RobNoelTest/Remember.htm
Texas Insurance Tax Forms-25-205 Computation of Non-Taxable Premiumsguest794304
This document is a form for computing non-taxable insurance premiums in Texas. It provides sections to report various types of non-taxable premium amounts, including premiums for employee benefit plans, returned premiums, dividends, government programs like Medicare, certain group policies, and state and federal employee benefit programs. Completing this form accompanies the annual Texas insurance premium tax report.
2008 DEER HUNTING INFORMATION AND ON-LINE/TOLL FREE TELEPHONE ...pleasure16
1) Researchers at NYU are developing a cell phone-based system called SmartTrack to improve HIV/AIDS drug distribution and patient treatment in Africa.
2) SmartTrack will use cell phone technology to more easily track drug shipments and monitor patient medication adherence and health outcomes.
3) The system aims to address key issues with drug supply chains in Africa like theft and counterfeiting, and help ensure patients follow drug regimens correctly.
This document is a Texas Manufactured Housing Sales Tax Return form. It provides instructions for completing the form and calculating the manufactured housing sales tax due. Taxpayers who sell manufactured homes or modular homes in Texas must file this return each reporting period to report their taxable sales and pay the 0.325% sales tax rate on those sales. The return requires the taxpayer to provide their contact information, gross sales, taxable sales, tax amount due, and penalties and interest if the form is filed or the tax is paid late.
Texas City and County Government Forms-40-141 Civil Fees Quarterly Reporttaxman taxman
This document is a quarterly civil fees report form for a city or county to report to the Texas Comptroller. It contains instructions for reporting various civil filing fees collected, including fees for birth certificates, marriage licenses, court filings, and other documents. The jurisdiction must report the number of each document issued, fees collected, and payment amounts due including a 5% service fee for some line items. The total amount due is calculated and must be remitted to the Texas Comptroller.
The document discusses makeup and hairstyle ideas for a girl band that will appear on the front cover of a magazine. The band members will have quirky, fashionable styles with bright lipstick and eye makeup, or one or the other. Rihanna is cited as inspiration for her bold makeup looks mixing clashing bright colors like pink and yellow eyeshadow with red or pink lips. A variety of hairstyles are proposed to suit each band member's individual hair color and length, including straight, curly and backcombed styles inspired by celebrities.
این شعر بسیار زیبا و تاثیرگذار اثر رابرت نوئل تست هست و پیشنهاد میکنم بههیچوجه خوندنش رو از دست ندید.
http://testfamilygenealogy.com/Documents/Obituaries/RobNoelTest/Remember.htm
Texas Insurance Tax Forms-25-205 Computation of Non-Taxable Premiumsguest794304
This document is a form for computing non-taxable insurance premiums in Texas. It provides sections to report various types of non-taxable premium amounts, including premiums for employee benefit plans, returned premiums, dividends, government programs like Medicare, certain group policies, and state and federal employee benefit programs. Completing this form accompanies the annual Texas insurance premium tax report.
2008 DEER HUNTING INFORMATION AND ON-LINE/TOLL FREE TELEPHONE ...pleasure16
1) Researchers at NYU are developing a cell phone-based system called SmartTrack to improve HIV/AIDS drug distribution and patient treatment in Africa.
2) SmartTrack will use cell phone technology to more easily track drug shipments and monitor patient medication adherence and health outcomes.
3) The system aims to address key issues with drug supply chains in Africa like theft and counterfeiting, and help ensure patients follow drug regimens correctly.
This document is a Texas Manufactured Housing Sales Tax Return form. It provides instructions for completing the form and calculating the manufactured housing sales tax due. Taxpayers who sell manufactured homes or modular homes in Texas must file this return each reporting period to report their taxable sales and pay the 0.325% sales tax rate on those sales. The return requires the taxpayer to provide their contact information, gross sales, taxable sales, tax amount due, and penalties and interest if the form is filed or the tax is paid late.
Texas City and County Government Forms-40-141 Civil Fees Quarterly Reporttaxman taxman
This document is a quarterly civil fees report form for a city or county to report to the Texas Comptroller. It contains instructions for reporting various civil filing fees collected, including fees for birth certificates, marriage licenses, court filings, and other documents. The jurisdiction must report the number of each document issued, fees collected, and payment amounts due including a 5% service fee for some line items. The total amount due is calculated and must be remitted to the Texas Comptroller.
The document discusses makeup and hairstyle ideas for a girl band that will appear on the front cover of a magazine. The band members will have quirky, fashionable styles with bright lipstick and eye makeup, or one or the other. Rihanna is cited as inspiration for her bold makeup looks mixing clashing bright colors like pink and yellow eyeshadow with red or pink lips. A variety of hairstyles are proposed to suit each band member's individual hair color and length, including straight, curly and backcombed styles inspired by celebrities.
This document discusses modeling magnetic fields of microtrap arrays for trapping ultracold atoms. It describes how double-loop microtraps can be used to create arrays of traps and transfer atoms between adjacent traps by varying currents. Adding an additional Ioffe coil can generate a trap with a nonzero minimum field to prevent atom loss due to spin flips. The microtraps use much smaller currents than macroscopic traps and allow controlling trap position and depth through bias fields, which could enable applications in precision measurements, quantum information processing, and more.
This document summarizes research on self-organized porous alumina templates and their applications in nanofabrication. It describes the experimental techniques for synthesizing porous alumina templates through anodization of aluminum foils. Factors that influence the pore size and spacing are discussed, such as applied voltage, aluminum purity, and etching time. Various deposition methods are also summarized, such as electrodeposition of nickel and sputtering of cobalt through the templates. Finally, potential applications of these templates in areas such as carbon nanotube growth and their optical properties are mentioned.
The document provides an overview of techniques used to study the surface corrosion layers of copper, including optical microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Auger electron spectroscopy, X-ray excited optical luminescence, and scanning electron microscopy. The goal is to make copper corrosion layers and apply surface-specific techniques to study and compare the different layers.
Introduction to Scanning Tunneling Microscopynirupam12
This document provides an overview of scanning tunneling microscopy (STM) principles and applications. It begins with a general introduction and outlines the basic theoretical framework of STM operation. Specifically, it discusses how STM works by bringing a tip within atomic reach of a surface and measuring tunneling current. The document then covers various STM capabilities such as surface characterization, probing oxides and high-temperature superconductors, and atomic resolution imaging. It concludes by discussing advanced STM techniques including spectroscopy, momentum-space imaging, spin-polarized measurements, and time-resolved applications with picosecond resolution.
The document discusses numerical simulations of ablation patterns on sublimating materials. It summarizes previous research on crosshatch patterns and experiments by Stock. The approach involves using CFD tools to implement a non-trivial boundary condition for low-temperature ablator camphor. Validation simulations of Baker's experiments on camphor cones show good agreement. Preliminary 3D simulations with turbulent models show localized groove patterns developing from peaks in wall temperature. Future work includes more detailed 3D cases and investigating the wall temperature dependence of groove formation.
Daniel adrien franco lespinasse - status of magnetron sputtered qwrthinfilmsworkshop
The objective of this research is the deposition of a superconductive thin film onto copper Quarter Wave Resonator cavities that can be used in the HIE-ISOLDE facility at CERN. To do this, it was developed an innovative magnetron configuration source. Our experience has shown the efficiency of this particular configuration in order to deposit a uniform thin film, and also improve the superconductive properties of the niobium (Residual Resistance Ratio and Critical Temperature). This presentation presents the recent improvement of the niobium thin film properties and the procedure used to deposit and measure the first resonator at LNL of HIE-ISOLDE type.
This document summarizes a presentation on the peculiar behavior of neutrons via nano-structures. It discusses the historical background of neutron optics from Chadwick to modern experiments. It covers topics like neutron wave-particle duality, total reflection, tunneling, and transmission through boron. Specifically, it shows how multilayer thin films can be designed to be transparent to neutrons using tunneling even when incorporating the strong neutron absorber boron-10.
1) When metal nanoparticles are excited by light, they exhibit localized surface plasmon resonance (LSPR) which enhances the local electric field. This study investigates how gold nanoparticles with silica shells of different thicknesses influence the photoluminescence of nearby quantum dots (QDs).
2) Time-resolved fluorescence and photon correlation measurements show that QDs near gold nanoparticles with thinner silica shells have higher biexciton emission quantum yields compared to QDs on glass.
3) Electrodynamics modeling suggests that the enhanced local electric field and additional non-radiative energy transfer from QDs to gold nanoparticles impact exciton and biexciton emission intensities and lifetimes in a way that increases the bi
The document describes the fabrication process for a piezoresistive pressure sensor using a surface micromachined silicon wafer. The key steps include (1) thermal oxidation to grow a silicon dioxide layer, (2) boron diffusion through photolithography to form piezoresistors in the substrate, and (3) a backside etch to create a thin diaphragm over which pressure can be measured through deflection. The process uses common microfabrication techniques such as cleaning, deposition, lithography, diffusion, and etching to create a functional pressure sensor on a silicon chip for pressure sensing applications.
The document summarizes a thesis submitted by Yan Valsky toward a Master of Science degree. The thesis proposes depositing novel TiN-C60 wear resistant coatings using a combination of filtered vacuum arc deposition and effusion cell techniques. Experimental results showed that while TiN-C60 coatings were successfully deposited with C60 fullerenes present, the coatings did not demonstrate improved wear properties over pure TiN coatings and adhesion was decreased. Further optimization of the deposition process may be needed to realize the potential tribological benefits of incorporating C60 into a TiN matrix.
Ion implantation is a process used to introduce impurity atoms into a crystalline substrate to modify its electronic properties. Ions are accelerated to high energies and bombard the silicon surface, penetrating the lattice and becoming embedded. It allows for extremely accurate control of the dopant dose and distribution. However, it is a complex process that can damage the semiconductor and require annealing. The distribution of implanted ions is typically Gaussian but is affected by backscattering and channeling effects. During annealing, the profile will diffuse but the initial profile complexity must be properly modeled.
Vapor phase cutting of carbon nanotubes using a nanomanipulator platform-ms&t...Paul McClure
This presentation by Xidex at MS&T'10 shows how Xidex's NanoBot system, equipped with gas delivery, can be used to "edit" carbon nanotube based nanodevices. For more details, please visit www.xidex.com.
The document discusses using a crossed approach of X-ray radiography and material analysis to authenticate art and archeology objects. It describes how X-ray radiography can identify abnormal internal structures while thermoluminescence dating and microanalysis can provide approximate dating information and evaluate material compatibility. Considering both techniques together can help determine if internal structures and material composition/dating are consistent and identify potential fakes or restorations. Examples show how radiography revealed modern settings while microanalysis dated materials, and how the techniques complement each other to authenticate objects.
Simpkins strong vibrational coupling - aps mar 2020BlakeSimpkins
The document summarizes research on controlling light-matter coupling strength through various means like molecular concentration, distribution, redox state, and excitation level. It shows electrochemical modulation of coupling for systems like benzoquinone and methylene blue. Cavity coupling is also shown to modify chemical reaction kinetics, reducing rates by around 80%. The goal is to control and modulate chemical processes using cavity-modified strong coupling.
The document summarizes a study that investigated the spark plasma sinterability and dry sliding wear resistance of tungsten carbide (WC) densified with cobalt (Co), cobalt-nickel (Co+Ni), and cobalt-nickel-chromium (Co+Ni+Cr) binders. Dilatometric spark plasma sintering tests showed that partial substitutions of Co with Ni or Ni+Cr decreased sinterability, with Ni+Cr having a greater negative effect. However, isothermal sintering under pressure was affected little by the substitutions. Testing found the materials were very resistant to dry sliding wear, with WC-Co+Ni+Cr exhibiting the greatest hardness and wear resistance due to its higher
Grassellino - Application of Muon Spin Rotation to studies of cavity performa...thinfilmsworkshop
http://www.surfacetreatments.it/thinfilms
Application of Muon Spin Rotation to studies of cavity performance limitations (Anna Grassellino - 20')
Speaker: Anna Grassellino - TRIUMF - Vancouver, Canada | Duration: 20 min.
Abstract
In this contribution a new experiment to investigate magnetic flux entry in Nb coupons and HFQS limited cutout samples will be presented. The experimental technique, called muSR (muon spin rotation), utilizes a probe magnetic moment to reveal local magnetic fields in the sample under study. Through the use of low energy spin polarized muons, the experiment can probe near surface local magnetic fields with extreme sensitivity. Being a ‘local’ rather than external and global technique, it offers a different and precise way to measure the field of first penetration in type-II superconductors. The experiment will study the nature of the transition from superconducting to mixed state in the marginal type II superconductor Nb, for samples with different treatment and grain size, and for RF characterized (via thermometry) HFQS limited cutout samples. Studying the latest will provide an opportunity to look for correlation of the onset of HFQS with the appearance of flux entry into the sample, detectable via the extremely sensitive muSR probe. Models for HFQS and MFQS which muSR can help probing will be discussed.
This document summarizes a study on large-eddy simulations of transcritical round jets. Modeling supercritical flows is challenging due to the complex transport phenomena and rapid variation of thermodynamic properties. The study examines simulations of nitrogen jets at 40 bar, both transcritical and supercritical conditions. Results show that the supercritical jet develops faster and enhances heat transfer through increased surface wrinkling. Fully developed turbulence in both jets exhibits self-preserving behavior, with density and velocity profiles similar to low-pressure jets. Quantitative agreement is found with experimental centerline data.
The document discusses the debate around using continuum versus discontinuum modeling approaches in geotechnical engineering projects involving rock. It argues that discontinuum modeling using discrete fracture networks is often more realistic than the continuum approach using tools like Hoek-Brown criteria. Examples are presented where discontinuum modeling matched observed failure modes better. The document also explores using tensile strength divided by density and Poisson's ratio as a way to predict height limits of rock faces, instead of shear strength-based approaches. Overall it advocates considering fracture properties and discrete features instead of simplified continuum methods when modeling jointed or faulted rock masses.
This document provides background information on carbon capture and storage (CCS) and summarizes the presenter's past, current, and future research related to CCS. Some key points include:
1) CCS involves capturing carbon dioxide emissions from large point sources and storing it deep underground for long periods of time.
2) The presenter's past research characterized the hydrogeology of the Mount Simon Sandstone formation in Ottawa County, Michigan as a potential CO2 injection site.
3) The presenter's current research is investigating how the geometry of microfracture networks impacts permeability in caprock formations like shales and mudstones.
Werner Kuhn and Hans Kuhn were brilliant 1940s Swiss polymer scientists who developed theories on random coil statistics and entropy of polymer chains. Their work provided a foundation for understanding rubber elasticity. Andrew Keller, a 1950s-1970s Hungarian physical chemist, made important contributions to understanding polymer crystallization through his work on polyethylene single crystals. Pierre de Gennes, a prominent 20th century French physicist, applied his expertise in areas like superconductivity to develop the theory of polymer reptation. Piet Lemstra and Paul Smith were 1980s Dutch polymer scientists who successfully produced high modulus polyethylene through solution processing techniques.
This document discusses plastics and polyethylene (PE) specifically. It notes that while plastics are fantastic due to their diverse uses, low production costs, and material properties, they also have environmental downsides when not disposed of properly. PE has a wide range of microstructures that give it varying properties and uses. It is one of the world's largest commodities, with over 80 million tonnes produced annually for a huge diversity of applications. However, plastic waste in the environment is a current issue that requires better recycling and disposal practices.
This document discusses modeling magnetic fields of microtrap arrays for trapping ultracold atoms. It describes how double-loop microtraps can be used to create arrays of traps and transfer atoms between adjacent traps by varying currents. Adding an additional Ioffe coil can generate a trap with a nonzero minimum field to prevent atom loss due to spin flips. The microtraps use much smaller currents than macroscopic traps and allow controlling trap position and depth through bias fields, which could enable applications in precision measurements, quantum information processing, and more.
This document summarizes research on self-organized porous alumina templates and their applications in nanofabrication. It describes the experimental techniques for synthesizing porous alumina templates through anodization of aluminum foils. Factors that influence the pore size and spacing are discussed, such as applied voltage, aluminum purity, and etching time. Various deposition methods are also summarized, such as electrodeposition of nickel and sputtering of cobalt through the templates. Finally, potential applications of these templates in areas such as carbon nanotube growth and their optical properties are mentioned.
The document provides an overview of techniques used to study the surface corrosion layers of copper, including optical microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Auger electron spectroscopy, X-ray excited optical luminescence, and scanning electron microscopy. The goal is to make copper corrosion layers and apply surface-specific techniques to study and compare the different layers.
Introduction to Scanning Tunneling Microscopynirupam12
This document provides an overview of scanning tunneling microscopy (STM) principles and applications. It begins with a general introduction and outlines the basic theoretical framework of STM operation. Specifically, it discusses how STM works by bringing a tip within atomic reach of a surface and measuring tunneling current. The document then covers various STM capabilities such as surface characterization, probing oxides and high-temperature superconductors, and atomic resolution imaging. It concludes by discussing advanced STM techniques including spectroscopy, momentum-space imaging, spin-polarized measurements, and time-resolved applications with picosecond resolution.
The document discusses numerical simulations of ablation patterns on sublimating materials. It summarizes previous research on crosshatch patterns and experiments by Stock. The approach involves using CFD tools to implement a non-trivial boundary condition for low-temperature ablator camphor. Validation simulations of Baker's experiments on camphor cones show good agreement. Preliminary 3D simulations with turbulent models show localized groove patterns developing from peaks in wall temperature. Future work includes more detailed 3D cases and investigating the wall temperature dependence of groove formation.
Daniel adrien franco lespinasse - status of magnetron sputtered qwrthinfilmsworkshop
The objective of this research is the deposition of a superconductive thin film onto copper Quarter Wave Resonator cavities that can be used in the HIE-ISOLDE facility at CERN. To do this, it was developed an innovative magnetron configuration source. Our experience has shown the efficiency of this particular configuration in order to deposit a uniform thin film, and also improve the superconductive properties of the niobium (Residual Resistance Ratio and Critical Temperature). This presentation presents the recent improvement of the niobium thin film properties and the procedure used to deposit and measure the first resonator at LNL of HIE-ISOLDE type.
This document summarizes a presentation on the peculiar behavior of neutrons via nano-structures. It discusses the historical background of neutron optics from Chadwick to modern experiments. It covers topics like neutron wave-particle duality, total reflection, tunneling, and transmission through boron. Specifically, it shows how multilayer thin films can be designed to be transparent to neutrons using tunneling even when incorporating the strong neutron absorber boron-10.
1) When metal nanoparticles are excited by light, they exhibit localized surface plasmon resonance (LSPR) which enhances the local electric field. This study investigates how gold nanoparticles with silica shells of different thicknesses influence the photoluminescence of nearby quantum dots (QDs).
2) Time-resolved fluorescence and photon correlation measurements show that QDs near gold nanoparticles with thinner silica shells have higher biexciton emission quantum yields compared to QDs on glass.
3) Electrodynamics modeling suggests that the enhanced local electric field and additional non-radiative energy transfer from QDs to gold nanoparticles impact exciton and biexciton emission intensities and lifetimes in a way that increases the bi
The document describes the fabrication process for a piezoresistive pressure sensor using a surface micromachined silicon wafer. The key steps include (1) thermal oxidation to grow a silicon dioxide layer, (2) boron diffusion through photolithography to form piezoresistors in the substrate, and (3) a backside etch to create a thin diaphragm over which pressure can be measured through deflection. The process uses common microfabrication techniques such as cleaning, deposition, lithography, diffusion, and etching to create a functional pressure sensor on a silicon chip for pressure sensing applications.
The document summarizes a thesis submitted by Yan Valsky toward a Master of Science degree. The thesis proposes depositing novel TiN-C60 wear resistant coatings using a combination of filtered vacuum arc deposition and effusion cell techniques. Experimental results showed that while TiN-C60 coatings were successfully deposited with C60 fullerenes present, the coatings did not demonstrate improved wear properties over pure TiN coatings and adhesion was decreased. Further optimization of the deposition process may be needed to realize the potential tribological benefits of incorporating C60 into a TiN matrix.
Ion implantation is a process used to introduce impurity atoms into a crystalline substrate to modify its electronic properties. Ions are accelerated to high energies and bombard the silicon surface, penetrating the lattice and becoming embedded. It allows for extremely accurate control of the dopant dose and distribution. However, it is a complex process that can damage the semiconductor and require annealing. The distribution of implanted ions is typically Gaussian but is affected by backscattering and channeling effects. During annealing, the profile will diffuse but the initial profile complexity must be properly modeled.
Vapor phase cutting of carbon nanotubes using a nanomanipulator platform-ms&t...Paul McClure
This presentation by Xidex at MS&T'10 shows how Xidex's NanoBot system, equipped with gas delivery, can be used to "edit" carbon nanotube based nanodevices. For more details, please visit www.xidex.com.
The document discusses using a crossed approach of X-ray radiography and material analysis to authenticate art and archeology objects. It describes how X-ray radiography can identify abnormal internal structures while thermoluminescence dating and microanalysis can provide approximate dating information and evaluate material compatibility. Considering both techniques together can help determine if internal structures and material composition/dating are consistent and identify potential fakes or restorations. Examples show how radiography revealed modern settings while microanalysis dated materials, and how the techniques complement each other to authenticate objects.
Simpkins strong vibrational coupling - aps mar 2020BlakeSimpkins
The document summarizes research on controlling light-matter coupling strength through various means like molecular concentration, distribution, redox state, and excitation level. It shows electrochemical modulation of coupling for systems like benzoquinone and methylene blue. Cavity coupling is also shown to modify chemical reaction kinetics, reducing rates by around 80%. The goal is to control and modulate chemical processes using cavity-modified strong coupling.
The document summarizes a study that investigated the spark plasma sinterability and dry sliding wear resistance of tungsten carbide (WC) densified with cobalt (Co), cobalt-nickel (Co+Ni), and cobalt-nickel-chromium (Co+Ni+Cr) binders. Dilatometric spark plasma sintering tests showed that partial substitutions of Co with Ni or Ni+Cr decreased sinterability, with Ni+Cr having a greater negative effect. However, isothermal sintering under pressure was affected little by the substitutions. Testing found the materials were very resistant to dry sliding wear, with WC-Co+Ni+Cr exhibiting the greatest hardness and wear resistance due to its higher
Grassellino - Application of Muon Spin Rotation to studies of cavity performa...thinfilmsworkshop
http://www.surfacetreatments.it/thinfilms
Application of Muon Spin Rotation to studies of cavity performance limitations (Anna Grassellino - 20')
Speaker: Anna Grassellino - TRIUMF - Vancouver, Canada | Duration: 20 min.
Abstract
In this contribution a new experiment to investigate magnetic flux entry in Nb coupons and HFQS limited cutout samples will be presented. The experimental technique, called muSR (muon spin rotation), utilizes a probe magnetic moment to reveal local magnetic fields in the sample under study. Through the use of low energy spin polarized muons, the experiment can probe near surface local magnetic fields with extreme sensitivity. Being a ‘local’ rather than external and global technique, it offers a different and precise way to measure the field of first penetration in type-II superconductors. The experiment will study the nature of the transition from superconducting to mixed state in the marginal type II superconductor Nb, for samples with different treatment and grain size, and for RF characterized (via thermometry) HFQS limited cutout samples. Studying the latest will provide an opportunity to look for correlation of the onset of HFQS with the appearance of flux entry into the sample, detectable via the extremely sensitive muSR probe. Models for HFQS and MFQS which muSR can help probing will be discussed.
This document summarizes a study on large-eddy simulations of transcritical round jets. Modeling supercritical flows is challenging due to the complex transport phenomena and rapid variation of thermodynamic properties. The study examines simulations of nitrogen jets at 40 bar, both transcritical and supercritical conditions. Results show that the supercritical jet develops faster and enhances heat transfer through increased surface wrinkling. Fully developed turbulence in both jets exhibits self-preserving behavior, with density and velocity profiles similar to low-pressure jets. Quantitative agreement is found with experimental centerline data.
The document discusses the debate around using continuum versus discontinuum modeling approaches in geotechnical engineering projects involving rock. It argues that discontinuum modeling using discrete fracture networks is often more realistic than the continuum approach using tools like Hoek-Brown criteria. Examples are presented where discontinuum modeling matched observed failure modes better. The document also explores using tensile strength divided by density and Poisson's ratio as a way to predict height limits of rock faces, instead of shear strength-based approaches. Overall it advocates considering fracture properties and discrete features instead of simplified continuum methods when modeling jointed or faulted rock masses.
This document provides background information on carbon capture and storage (CCS) and summarizes the presenter's past, current, and future research related to CCS. Some key points include:
1) CCS involves capturing carbon dioxide emissions from large point sources and storing it deep underground for long periods of time.
2) The presenter's past research characterized the hydrogeology of the Mount Simon Sandstone formation in Ottawa County, Michigan as a potential CO2 injection site.
3) The presenter's current research is investigating how the geometry of microfracture networks impacts permeability in caprock formations like shales and mudstones.
Similar to mrm Bristol-Flow Visualisation-(2008) (20)
Werner Kuhn and Hans Kuhn were brilliant 1940s Swiss polymer scientists who developed theories on random coil statistics and entropy of polymer chains. Their work provided a foundation for understanding rubber elasticity. Andrew Keller, a 1950s-1970s Hungarian physical chemist, made important contributions to understanding polymer crystallization through his work on polyethylene single crystals. Pierre de Gennes, a prominent 20th century French physicist, applied his expertise in areas like superconductivity to develop the theory of polymer reptation. Piet Lemstra and Paul Smith were 1980s Dutch polymer scientists who successfully produced high modulus polyethylene through solution processing techniques.
This document discusses plastics and polyethylene (PE) specifically. It notes that while plastics are fantastic due to their diverse uses, low production costs, and material properties, they also have environmental downsides when not disposed of properly. PE has a wide range of microstructures that give it varying properties and uses. It is one of the world's largest commodities, with over 80 million tonnes produced annually for a huge diversity of applications. However, plastic waste in the environment is a current issue that requires better recycling and disposal practices.
This presentation gives a summary of how Polyethylene (PE). can crystallise from solution and the melt. The crystallisation of PE is both remarkable and very beautiful. The way PE crystallises is very important in relation to the properties of PE plastic bags, extrusions and high modulus PE fibres.
Polyethylene polymer crystallisation results in beautiful crystalline microstructures. Polyethylene chains can form chain folded single crystals when crystallized from solution, or "shish kebab" fibrous crystals if shear is applied. When crystallized from the melt, polyethylene typically forms spherulite crystals made up of chain folded lamella that are 1-10 microns in diameter. The crystalline structures that form rival diamond in their beauty and molecular organization despite starting as flexible polymer chains.
This presentation is for my last Cambridge Rheology course lecture. The presentation links course work with research that had been carried out in the Department. The presentation has been modified a little to aid web clarity.
Web- Liquid Crytals and Liquid Crystal Polymers-2015malcolmmackley
The document discusses liquid crystals (LCs) and liquid crystal polymers (LCPs). LCs are formed from small, semi-rigid rod-like molecules that have liquid-like properties but local molecular ordering, giving them useful optical properties. LCPs, discovered in the 1970s, are made from semi-rigid polymer chains and similarly have local anisotropy and birefringence. The document focuses on "disclination" line defects that occur in both LCs and LCPs, influencing their overall orientation. Micrographs show various disclination textures in thermotropic LCPs under different conditions. While LCPs have locally ordered structures, controlling the disclination defect texture across the whole
Flow, Crystallisation and Continuous Processingmalcolmmackley
This presentation reviews the way flow can effect crystallisation. The presentation also reviews different ways continuous processing can be achieved. Continuous crystallisation is of relevance to a number of technologies including pharmaceutical manufacture.
This presentation gives a summary on the development of the Cambridge Trimaster which is an apparatus for studying the fast filament stretching, thinning and break up of low viscosity fluids. The apparatus is particularly relevant to ink jet fluids
1) In 1969, Prof. Albert Pennings discovered that Taylor vortices in Couette flow could induce elongated "shish kebab" crystal fibers of polyethylene from solution.
2) Also in 1969, Sir Charles Frank concluded that polyethylene could have a Young's modulus of 210 GPa if the chains were all aligned based on its similarity to diamond's unit cell structure.
3) In the 1970s, Frank and Mackley's experiments using opposed jets showed localized chain extension and "shish kebab" crystal formation, but with low overall modulus.
This presentation was given in 2010 at a British Society of Rheology meeting on Biorheology held at Nottingham University.
The presentation describes the rheology of certain dysphagia formulations and then introduces "The Cambridge Throat". A mechanical device for following the way fluids are drawn into the throat by a model tongue and then how the fluid flows down the back of the throat.
This presentation was given at CEMEF (Mines ParisTech) Sophia Antipolis in 2005. The presentation is concerned with microstructure mechanisms that can explain certain shear thinning behaviour of certain complex fluids.
This presentation was given in Cardiff at the European Society of Rheology Conference in 2009. The presentation is about research in "extreme" areas of rheology and includes work on measuring the viscoelasticity of low viscosity fluids and the limiting extensional viscosity of high viscosity fluids.
Ink jet rheology and processing-Monash 2009malcolmmackley
This presentation gives a summary of work carried out in the Chemical Engineering Department at Cambridge on the rheology and processing of ink jet fluids. The linear viscoelastic properties are captured using a PAV rheometer and the non linear extensional behaviour using a "Cambridge Trimaster".
This document summarizes research on inventing plastic microcapillary films (MCFs) conducted by Malcolm Mackley and others at the University of Cambridge. The researchers developed a novel process to continuously extrude plastic MCFs with controlled voidage levels below 10% using a single-screw extruder, die design, and gas injection. They characterized the MCF structures and capillary sizes. Further mechanical drawing of the MCFs after extrusion was shown to orient the structure while limiting drawability due to necking in the capillaries. This research advanced engineering of plastic MCFs with tailored properties.
This was my last Departmental seminar given in Chemical Engineering at Cambridge. It tells the story of apparatus and process invention. I have included pictures that influenced my career.
The Cambridge Multipass Rheometer (MPR) is capable of performing rheology measurements under varied temperature, pressure, flow, and time conditions. It has four models that can impose temperature from -10 to 210°C, pressure from 1 to 200 bar, flow from 1 to 100,000 reciprocal seconds, and time from milliseconds to hours. The MPR uses enclosed volumes and interchangeable inserts to perform experiments in different flow modes like pressure variation, flow curves, and cross-slot flow. It has been used to study materials like polymers, foods, foams and other complex fluids.
1. Bristol 2008
Physics Department Colloquium
“Visualisation; seeing the physical picture ”
BY
MALCOLM MACKLEY.
DEPARTMENT OF CHEMICAL ENGINEERING.
UNIVERSITY OF CAMBRIDGE.
www.cheng.ac.uk/groups/polymer
mrm5@cam.ac.uk
33. Parallel Plate Rheometer. UV cure Microstructure Studies
UV Light
Quartz Upper Plate
CNT in photo-curable acrylic or epoxy
Stainless Steel
Bottom Plate Ωr
γ (r ) =
h
Ω: rotation speed
r =0 r=R r: radial position
h: plate separation
r =0 r=R
34. A “Zoo” of CNT Microstructure
0 s-1 1 s-1 10 s-1 100 s-1 1000 s-1
I. Untreated
SWNT
II. Treated
SWNT
III. Untreated
MWNT
IV. Treated
MWNT
All at 0.05 wt% conc
37. Conclusion
I would like to thank the “Bristol Physics
Department” and in particular the 1970s
academic staff for inspiring me, and
indirectly my students.
Malcolm Mackley mrm5@cam.ac.uk