Laser Diffraction is the most popular technique in modern particle sizing. It can be used to rapidly and reliably determine the size and size distribution particles with sizes from 10's of nanometers to a few millimeters.
View recorded webinars:
http://bit.ly/particlewebinars
Dr. Jeff Bodycomb shares the core principle behind laser diffraction and two laser diffraction models (Fraunhofer and Mie) that are the backbone of laser diffraction theory.
Particle Classroom Series II: The Basics of Laser DiffractionHORIBA Particle
Particle size analysis by laser diffraction offers many advantages. The technique is fast, reliable, and can be used for analyzing a wide range of particle sizes. In laser diffraction scattering as a function of angle is measured and the data used to determine the particle size distribution. The technique can be used over a very wide range of particle sizes -- 10's of nm to 100's of microns. In addition it is very fast and reliable. In this webinar, Dr. Jeff Bodycomb will discuss:
Exactly what happens when light strikes a particle
Light intensity and how it effects the measurement
Fraunhofer vs. Mie
Real and imaginary refractive index values
This is a great introduction to someone who wants to understand the science behind the measurement.
View recorded webinars:
http://bit.ly/particlewebinars
Introducing the LA-960 Laser Particle Size AnalyzerHORIBA Particle
HORIBA Instruments proudly announces the latest evolution in the LA series of particle size analyzers, the LA-960. Building on the successful LA-950 platform, this advanced model measures the particle size of suspensions, emulsions, powders, pastes, creams, and gels between 10 nanometers and 5 millimeters. The complex science of particle size analysis is simplified with HORIBA’s refined software and powerful sample handling systems.
Join us on Wednesday, September 17th at 1:30 PM Eastern to learn more about the world’s newest and most advanced laser particle size analyzer. This webinar will be suitable for anyone wishing to learn about the state of the art in laser particle size analysis.
Dr. Jeff Bodycomb shares the core principle behind laser diffraction and two laser diffraction models (Fraunhofer and Mie) that are the backbone of laser diffraction theory.
Particle Classroom Series II: The Basics of Laser DiffractionHORIBA Particle
Particle size analysis by laser diffraction offers many advantages. The technique is fast, reliable, and can be used for analyzing a wide range of particle sizes. In laser diffraction scattering as a function of angle is measured and the data used to determine the particle size distribution. The technique can be used over a very wide range of particle sizes -- 10's of nm to 100's of microns. In addition it is very fast and reliable. In this webinar, Dr. Jeff Bodycomb will discuss:
Exactly what happens when light strikes a particle
Light intensity and how it effects the measurement
Fraunhofer vs. Mie
Real and imaginary refractive index values
This is a great introduction to someone who wants to understand the science behind the measurement.
View recorded webinars:
http://bit.ly/particlewebinars
Introducing the LA-960 Laser Particle Size AnalyzerHORIBA Particle
HORIBA Instruments proudly announces the latest evolution in the LA series of particle size analyzers, the LA-960. Building on the successful LA-950 platform, this advanced model measures the particle size of suspensions, emulsions, powders, pastes, creams, and gels between 10 nanometers and 5 millimeters. The complex science of particle size analysis is simplified with HORIBA’s refined software and powerful sample handling systems.
Join us on Wednesday, September 17th at 1:30 PM Eastern to learn more about the world’s newest and most advanced laser particle size analyzer. This webinar will be suitable for anyone wishing to learn about the state of the art in laser particle size analysis.
Particle Classroom Series III: Refractive Index and Laser DiffractionHORIBA Particle
Modern laser diffraction particle analyzers use particle refractive index to accurately model the behavior of light inside of the particle. However, this presents the analyst with the challenge of choosing the correct value. In this Webinar, Dr. Jeff Bodycomb will discuss:
- Why do we need a refractive index value?
- What is refractive index?
- How do we choose refractive index values?
View recorded webinars:
http://bit.ly/particlewebinars
anti reflection coatings of lenses, all required concepts of arc, principle of anti reflection coating, materials, availability of arc, comparisons of different materials
This ppt is based in the topic of contact lens fitting of the RGP type contact lens. this is one of my university assignment. i am currently the student of centurion university of technology and management located in odisha.
Zone refining, melting and leveling in crystal growthSum K
Zone refining, melting and leveling in crystal growth is an important process in extractive metallurgy for manufacturing of ultra pure materials with wide ranging applications in semiconductor material synthesis, single crystal growth etc.
Just basics of mesoporous materials!!The Break through came around 1992 by both Japanese and Mobil scientist on the soft template based synthesis of mesoporous materials
How to Select the Best Refractive Index for Particle Size AnalysisHORIBA Particle
Dr. Jeff Bodycomb discusses the process HORIBA uses to select the best possible refractive index. This information is valuable for anyone using any type of laser diffraction particle size analyzer regardless of manufacturer or model.
This presentation covers the following topics:
* Available resources and current thinking
* Automated RI determination with the Method Expert
* Effect on accuracy of using good, bad, and no refractive index
Particle Classroom Series I: Introduction to Particle AnalysisHORIBA Particle
If you're new to particle characterization, this is a webinar just for you! Dr. Jeff Bodycomb will discuss the basics of particles....why different size definitions will give you different results, various methods used to measure particles and why the method you use matters! This webinar will be the first in a series that will give you the knowledge you'll need to be the particle expert in your lab.
View recorded webinars:
http://bit.ly/particlewebinars
Particle Classroom Series III: Refractive Index and Laser DiffractionHORIBA Particle
Modern laser diffraction particle analyzers use particle refractive index to accurately model the behavior of light inside of the particle. However, this presents the analyst with the challenge of choosing the correct value. In this Webinar, Dr. Jeff Bodycomb will discuss:
- Why do we need a refractive index value?
- What is refractive index?
- How do we choose refractive index values?
View recorded webinars:
http://bit.ly/particlewebinars
anti reflection coatings of lenses, all required concepts of arc, principle of anti reflection coating, materials, availability of arc, comparisons of different materials
This ppt is based in the topic of contact lens fitting of the RGP type contact lens. this is one of my university assignment. i am currently the student of centurion university of technology and management located in odisha.
Zone refining, melting and leveling in crystal growthSum K
Zone refining, melting and leveling in crystal growth is an important process in extractive metallurgy for manufacturing of ultra pure materials with wide ranging applications in semiconductor material synthesis, single crystal growth etc.
Just basics of mesoporous materials!!The Break through came around 1992 by both Japanese and Mobil scientist on the soft template based synthesis of mesoporous materials
How to Select the Best Refractive Index for Particle Size AnalysisHORIBA Particle
Dr. Jeff Bodycomb discusses the process HORIBA uses to select the best possible refractive index. This information is valuable for anyone using any type of laser diffraction particle size analyzer regardless of manufacturer or model.
This presentation covers the following topics:
* Available resources and current thinking
* Automated RI determination with the Method Expert
* Effect on accuracy of using good, bad, and no refractive index
Particle Classroom Series I: Introduction to Particle AnalysisHORIBA Particle
If you're new to particle characterization, this is a webinar just for you! Dr. Jeff Bodycomb will discuss the basics of particles....why different size definitions will give you different results, various methods used to measure particles and why the method you use matters! This webinar will be the first in a series that will give you the knowledge you'll need to be the particle expert in your lab.
View recorded webinars:
http://bit.ly/particlewebinars
Concentration and Size of Viruses and Virus-like ParticlesHORIBA Particle
Accurate concentration for virus and virus-like particles can be determined by multi-laser nanoparticle tracking analysis due to the fact they are nanoparticles. Other biologically relevant materials will have sizes that are close to those of viruses, whether they are protein aggregates that provoke an unwanted immune response or exosomes with a similar size and do not provoke an immune response.
In this webinar, Dr. Jeff Bodycomb will discuss the use of multi-laser nanoparticle tracking analysis (NTA) to determine the size distribution and concentration of these species, the latter which is correlated to viral infectivity.
Learn more about:
-How NTA determines concentration and size distribution
-Advantages and limits of the multi-laser technique
-Example measurement results
View recorded webinars:
http://bit.ly/particlewebinars
Modern Particle Characterization Techniques Series I: IntroductionHORIBA Particle
Particle characterization is a rich field that touches industries from mining to pharmaceutical production. There are a number of characterization techniques available to the modern analyst. Understanding them is key to selecting the right technique as well as gaining deeper insight into the meaning of measurement results.
This webinar is the beginning of a new series reviewing a number of modern measurement techniques. Dr. Michael Pohl, Vice President of HORIBA Scientific, will describe some common ideas in particle characterization along with common questions to ask when selecting a technique. Mike will also give a very brief overview of some modern techniques before subsequent webinars go into detail.
View recorded webinars:
http://bit.ly/particlewebinars
How and Why to Analyze Ceramic Powder ParticlesHORIBA Particle
Packing density, mechanical strength, and processing of ceramics are all affected by the size distribution of the powders. Therefore, particle size analysis is an important quality control step. Due to its wide size range and flexibility, laser diffraction is often the preferred method of analysis. Laser diffraction can be used for particles with sizes from 10’s of nanometers to millimeters. In this webinar, Dr. Jeff Bodycomb of HORIBA Scientific discusses particle analysis of ceramic particles, including electronic materials and common oxides. He will cover the basic principles of analysis, practical methods for obtaining good data, and example data.
View recorded webinars:
http://bit.ly/particlewebinars
For the full video of this presentation, please visit:
https://www.embedded-vision.com/platinum-members/embedded-vision-alliance/embedded-vision-training/videos/pages/may-2017-embedded-vision-summit-gehlhar
For more information about embedded vision, please visit:
http://www.embedded-vision.com
Jessica Gehlhar, Vision Solutions Engineer at Edmund Optics, presents the "Introduction to Optics for Embedded Vision" tutorial at the May 2017 Embedded Vision Summit.
This talk provides an introduction to optics for embedded vision system and algorithm developers. Gehlhar begins by presenting fundamental imaging lens specifications and quality metrics. She explains key parameters and concepts such as field of view, f number, working f number, NA (numerical aperture), focal length, working distance, depth of field, depth of focus, resolution, MTF (modulation transfer function), distortion, keystoning, and telecentricity and their relationships. Optical design basics and trade-offs introduced include design types, aberrations, aspheres, pointing accuracy, sensor matching, color and protective coatings, filters, temperature and environmental considerations, and their relation to sensor artifacts.
She also explores manufacturing considerations, including testing the optical components and imaging lenses in a product, and the industrial optics used for a wide range of manufacturing tests. Depending on requirements, a wide variety of tests and calibrations may be performed. These tests and calibrations become important with designs that include technologies such as multi-camera, 3D, color and NIR (near-infrared).
Key Points to Achieving Successful Laser Diffraction Method DevelopmentHORIBA Particle
Unlock the secrets to the best measurement for particles. Topics covered include choosing appropriate accessories, selecting the best dispersing medium, assessing the effect of circulation pump speed, and evaluating the impact of using different imaginary refractive index values.
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Interpreting Laser Diffraction Results for Non-Spherical ParticlesHORIBA Particle
Particle shape can have a profound impact on particle size distribution (PSD) measurements. In the case of Laser Diffraction, the shape and aspect ratio of particles alter the diffraction pattern used to determine PSD, which is calculated on the basis of equivalent spherical diameter. For instance, it has been established that the reported size of an ellipsoid is always smaller than the physical major dimension of the particle. Furthermore, when non-spherical particles align within a flowing sample, laser diffraction instruments typically report a bi-modal size distribution even in the case of monodisperse samples.
Equipped with only qualitative knowledge of particle shape, the particle analyst can resolve this inherent ambiguity and use laser diffraction to obtain quantitative information (such as aspect ratio) about non-spherical particles. This webinar explains the origin of this effect, describes how to interpret PSD data in such cases, and demonstrates several practical applications for measurements of crystals, bacteria, and clays.
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Lithographic photomasks are typically transparent fused silica blanks covered with a pattern defined with a chrome metal-absorbing film. Photomasks are used at wavelengths of 365 nm, 248 nm, and 193 nm. Photomasks have also been developed for other forms of radiation such as 157 nm, 13.5 nm (EUV), X-ray, electrons, and ions; but these require entirely new materials for the substrate and the pattern film.
First plasmonic filter sensor for consumer devices could disrupt optical applications.
The NSP32-V1 from NanoLambda is the world’s smallest optical spectrometer, and the first such device for Internet-of-Things and handheld devices. It could enable everyday analysis of food and water, color measurement, health monitoring and pollution detection. The data measured by the NSP32-V1 is the same output format as conventional optical spectrum analyzers, which facilitates the use of this device without creating a new database.
The NSP32-V1 spectrometer uses a 1024 pixel, 32 x 32, nano-optical filter array to measure the light spectrum, based on a technological breakthrough, the plasmonic filter. This is a metal film perforated with subwavelength hole arrays. It is manufactured within the metal layer of the silicon die, giving a monolithic solution.
The 100μm-high sensor die is assembled in an advanced ball grid array (BGA) package with an optical window for only 500μm height. The other optical parts, the lens and the diffuser, are assembled in a 5.7mm-high module. The module is very small overall, at just 6mm x 6mm x 5.3mm.
Based on a complete teardown analysis of the NSP32-V1 nano-spectrometer, the report provides a complete physical analysis and manufacturing cost estimate of the die and the packaging, including the lens module.
The report also includes a comparison between the characteristics of the NSP32-V1 and the SCIO molecular sensor from Consumer Physics. The comparison highlights differences in technical choices made by the companies and their impacts on the process flow and manufacturing cost.
More information on that report at http://www.i-micronews.com/reports.html
Company introduction for DiYPRO Co. Ltd., South Korea.
Fresnel Factory.com is owned by DiYPRO.
This company is a manufacture for fresnel lens.
Fresnel lens is using for concentrate solar energy, shape LED light, magnifier and motion detector.
From the brochure, you can find our capacity for small and large fresnel lenses.
Ultimate Guide to 3D Printing Thermosets for Manufacturing and ProductionChemtron
Learn the difference between SLA, DLP, and 3SP for additive manufacturing in a large build envelope when high accuracy, repeatability, and throughput are required.
Mark Bumiller of HORIBA Scientific discusses tactics for getting the best possible particle size results for pigments, inks, and paints. These applications tend to be more challenging than most, so the information in this presentation will be valuable for any chemist responsible for these materials.
Recap on some of the key challenges for displays, and what future displays may look like.
The presentation started at the experience, and the "Why ?" , we're all passionate about Visual Experience and Displays as the primary communication portal to our increasingly digital world.
Then, from the ground up: looking at trends and issues at the Pixel-level, the Interface-level, and the Graphics Chip level. And what challenges are ahead for both.
Covering what the faster than Moore's law growth in display TFT transistor will mean, and some of the key driving factors for future displays. Additionally, looking at HDR, and evaluating proposed technologies (such as emissive color filters).
Concluding with a high-level introduction to a major display challenge, which has made headlines internationally - and requires attention, in order to safely proliferate displays innovations to the next generation, in the visual IoT era.
https://pixeldisplay.com/news/thread/?id=65
Similar to Modern Laser Diffraction for Particle Analysis (20)
Exosomes: Exploiting the Diagnostic and Therapeutic Potential of Nature’s Bio...HORIBA Particle
Research on exosomes and other forms of extracellular vesicles (EVs) have rapidly expanded over the last two decades. These lipid-enclosed, nanoscale messengers are released from cells packed with diverse cargo and can travel long distances to modify the function of target cells. Found in abundant quantities in biological fluids like blood, there is great clinical interest in using EVs as diagnostic markers or altering their properties for therapeutic delivery. Tune in to find out more about what exosomes are, how researchers study them, and what challenges remain. This talk will highlight multi-laser nanoparticle tracking analysis (NTA) with the ViewSizer 3000 and what it offers in exosome research.
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http://bit.ly/particlewebinars
Modern Particle Characterization Techniques Series: Laser DiffractionHORIBA Particle
This part two of the webinar series will introduce participants to basic experimental considerations when choosing laser diffraction for particle size analysis. The presentation will explain what makes laser diffraction a “modern technique.” Both wet and dry case studies will be shown along with brief demonstration videos.
In this webinar, you will learn:
- Method development
- Choosing an appropriate refractive index
- Understanding the analysis results
View recorded webinars:
http://bit.ly/particlewebinars
Mastering the Processing Methods of Engineered ParticlesHORIBA Particle
This webinar will explain the development process for particles with specific attributes that can cause problems during production. Three case studies will be discussed: Engineered particles that protect omega-3 oil from oxidation using special microencapsulation methods; modified cellulose fibers with high water holding capacity; and engineered particles produced by melt atomization processes with unique attributes. The talk will focus on alternative processing methods, the importance of understanding the materials being used, and what can happen when you do not understand the functional properties that you are designing for.
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http://bit.ly/particlewebinars
The Value of Real-time Imaging: Integrating Particle Size Analysis onto Fluid...HORIBA Particle
The capability to measure critical quality attributes (CQA) such as particle size in real time reveals their functional relationships with the critical process parameters (CPP). The Eyecon2™ offers a true non-product contact, a real-time imaging system that can be used with dry and wet bulk solid processing equipment affording a digital maturity competitive edge. We will dive into how the imaging technology works, the basic principles of analysis for particle size detection, the methods of integration onto process equipment such as Fluid Beds, Twin Screw Granulators and Roller Compactor and discuss key applications where the value of real-time in-line particle size results archetype how the Eyecon2 enables transparency, agility and productivity that aligns with the Factory of the Future and Pharma 4.0.
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Particle Classroom Series VI: Method DevelopmentHORIBA Particle
Great results need a great method. In order to compare different lots of material or different manufacturing approaches, variation due to sample preparation should be minimized. Should the sample be run in suspension or as a dry powder? What salts or surfactants are needed for the suspension? How much energy should be applied and how? Systematically determining the answers to these questions is method development.
View recorded webinars:
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Particle Classroom Series V: Sampling and DispersionHORIBA Particle
The goal of a particle analysis is to understand the properties of a material, whether it is the size distribution of particles that are manufactured today or the size distribution of particles in the truck that just arrived. Naturally, a particle analyzer only encounters a tiny fraction of that material, the sample.
In addition, particles can be bound together to form agglomerates that do not represent the underlying materials. The instrument will then measure the agglomerates, not its constituent particles. In this webinar, Jeff discusses how to improve data quality by obtaining a representative sample and effectively disperse the sample to remove or prevent agglomerates.
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Particle Size Analyses of Polydisperse Liposome Formulations with Multispectr...HORIBA Particle
During this webinar, Dr. Singh will discuss the significance of liposome size characteristics in medicine. He will discuss the challenges present in particle size measurement for heterogeneous size containing formulation (polydisperse). He will also discuss his recently published results on polydisperse bead and liposome formulations using DLS, conventional NTA, laser diffraction and a novel multispectral NTA measurement techniques.
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Particle Classroom Series IV: System VerificationHORIBA Particle
Confirming the performance of a particle analyzer is a critical step in ensuring and proving data quality. Join Dr. Jeff Bodycomb as he discusses performance expectations, confirming system performance, and recommended practices. This is part four of a six-part classroom series.
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Principio, Optimización y Aplicaciones del Análisis de seguimiento de Nanopar...HORIBA Particle
Este webinar tiene como objetivo presentar los fundamentos teóricos del análisis de seguimiento de nanopartículas (NTA), su optimización y su aplicaciones más recientes en la industria e investigación.
- Principio de la Técnica de Rastreo de Nanopartículas (NTA)
- Información que nos proporciona la técnica NTA
- Limitaciones de la técnica NTA
- Optimización
- Aplicaciones más recientes
View recorded webinars:
http://bit.ly/particlewebinars
Surface area is an important physical property that influences the reactivity, dissolution, catalysis, and separation of materials. The surface area often must be carefully engineered and measured to optimize specific functions. In this Webinar, our applications lab will explain with real-world examples:
- Physical adsorption technique - BET theory
- Sample preparation – the start of a good measurement
- Calculating specific surface area from gas adsorption on solid surfaces
- Troubleshooting – what happens when things go wrong?
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http://bit.ly/particlewebinars
How to Present and Compare Data Obtained by Particle Tracking Analysis and Ot...HORIBA Particle
This Webinar is for anyone who wants to understand how experimental data should be presented and compared properly while using histograms.
Dr. Kuba Tatarkiewicz examines methods for particle size distributions as obtained by particle tracking analysis, fluorescence, as well as micro-sedimentation. Choices of binning schemes that users can design themselves will be discussed with examples of how various parameters (like mode and D50) change with different binnings, especially for highly polydisperse colloids. Methods for comparison of particle size distributions will be presented and explained in practical terms.
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Why the University of Washington chose the HORIBA Laser Scattering Particle S...HORIBA Particle
Join our users at the University of Washington (UW) as they discuss how the HORIBA particle size analyzer is used in their undergraduate courses and how the instrument manages to support a wide range of applications. Some examples include polymers spheres, ceramic powders, soil, and rocks. In this Webinar, Materials Science and Engineering (MSE) graduate students, Michelle Katz and Tiffany Tang will demonstrate with case studies how other orthogonal methods such as optical microscopy, scanning electron microscopy and x-ray diffraction help them cross-validate their particle size and size distribution. You will also learn in their own words, why the UW MSE program chose the HORIBA particle size analyzer over other options for their undergraduate environment.
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Improved Visualization, Counting and Sizing of Polydisperse Nanoparticle Coll...HORIBA Particle
The ViewSizer® 3000 offers the ability to visualize nanoparticle colloids without requiring calibration standards or knowledge of any particle material properties, such as refractive index. It was developed by MANTA – the Most Advanced Nanoparticle Tracking Analysis – and offers the user an unprecedented ability to count and size highly polydispersed samples, such as milk, sea water, or blood plasma.
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Particle Size Analysis for Homogenization Process Development HORIBA Particle
Emulsions and suspensions are commonly used in pharmaceutical, chemical and consumer products. The pharmaceutical industry, in particular, uses emulsions and suspensions to increase drug efficacy by controlling their particle size and size distribution. Among various available preparation methods, high-pressure homogenization is one of the widely employed processes in the field. This webinar discusses ways to develop a robust homogenization process for making pharmaceutical emulsions by evaluating droplet size distribution.
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Accurately Measure Concentration of Nanoparticles in ColloidsHORIBA Particle
In this presentation, Dr. Jan "Kuba" Tatarkiewicz discusses the influence of various experimental parameters determined by different methods to measure the concentration of particles in colloids, especially in poly-dispersed and poly-material samples. Dr. Tatarkiewicz compares the principles of measurements for established technologies such as transmission electron microscopy (TEM), flow cytometry (FC), resistive pulse sensing (Coulter), nanoparticle tracking analysis (NTA) as well as improvements introduced to the latter by multispectral advanced nanoparticle tracking analysis (MANTA). Dr. Tatarkiewicz will present experimental results obtained for standardized samples and colloids encountered in research studies in diverse fields of interest.
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Introdução às Principais Técnicas para Caracterização de Partículas e suas Ap...HORIBA Particle
Esse webinar tem por finalidade apresentar os conceitos das principais técnicas atuais para a análise de distribuição de tamanho de partículas (Difração de Laser, Espalhamento Dinâmico de Luz – DLS, Imagem Dinâmica, e Rastreamento de Partículas - PTA) a fim de ajuda-los a determinar qual a melhor técnica para atender as suas necessidades.
Ver webinars:
http://bit.ly/particlewebinars
River Sediment Transport Measurement of a River ColumnHORIBA Particle
Dr. Yogi Agrawal discusses how the transport of sediments by rivers affects the environment in many ways, forming and deforming bedforms, eroding banks, and transporting pollutants to name a few.
Emerging food trends, Plant Based Proteins, Healthy Fat and SugarHORIBA Particle
This presentation by Julie Nguyen of HORIBA Scientific discusses some of the growing trends toward a healthier diet and new FDA guidelines. From a webinar presented in July, 2016.
Kiwan Park of HORIBA Scientific, presents an overview of Piezo Particles beginning with the discover by Jacques and Pierre Curie and stepping through some of today's applications from Igniters to Ultrasounds.
Soil Particle Size Analysis and Clay Fraction ExtractionHORIBA Particle
Dr. Scott Werts, Assistant Geology Professor at Winthrop University, discusses how he and his graduate students use particle size analysis in their research. He presented a webinar on behalf of HORIBA Scientific in October 2016.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.