paper_and_ink_examination.ppt
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This document discusses the examination of ink and paper. It describes how chromatography, including HPLC, TLC, and paper chromatography, can be used to physically separate the components of inks. It also discusses how paper chromatography was used to characterize two samples of black ink from different manufacturers by measuring their retention factors. Additionally, it lists some differences between papers that can be examined, including raw material, weight, density, thickness, color, watermarks and age. Finally, it poses some frequently asked questions about obliterations and infrared luminescence.
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IntroductiontoForensics.ppt
Forensic science is the application of science to criminal and civil laws. It involves various scientific disciplines like chemistry, biology, and physics to analyze physical evidence. Sir Arthur Conan Doyle popularized crime scene investigation methods in his Sherlock Holmes stories. Over time, experts like Alphonse Bertillon, Francis Galton, and Calvin Goddard developed techniques like fingerprint analysis, ballistics analysis, and blood typing that are now core parts of forensic science. Modern crime labs provide services like evidence collection, DNA analysis, toxicology, and pathology to aid legal investigations. Forensic scientists analyze evidence scientifically and may provide expert testimony in court.
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This document discusses forgery and its types. It defines forgery as falsely making or altering a writing that affects another person's legal rights or obligations, whether or not it includes the forger's name. The main types of forgery discussed are check fraud, counterfeiting paper money and identity documents, credit card theft, and contract alterations. Methods of forgery include simulated forgery by copying a genuine signature, traced forgery by tracing a genuine signature, and blind forgery of signatures that do not exist.
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The document discusses forensic document examination, which involves analyzing documents like handwriting, signatures, and printed text to determine authenticity and detect forgeries. It describes techniques like electrostatic detection to find indentations, video spectral comparator to examine inks under different lights, and thin layer chromatography to analyze ink components. The goal is to compare questioned documents to known samples and look for consistent characteristics to identify the writer.
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This document provides information on the history and development of fingerprint identification. Some key points:
- Fingerprints first began being used for identification in the late 19th century in India and Argentina. Sir Francis Galton established their individuality and permanence in 1892.
- The Henry Classification System, developed in India in 1897, became the standard fingerprint classification system used in English-speaking countries.
- Fingerprint use began being adopted for criminal identification in the early 20th century, first in England and Wales in 1901 and then in the US starting in the 1900s and growing rapidly in the following decades.
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Document_Analysis.ppt
Document analysis involves examining documents like handwriting, signatures, and printed text to determine authenticity and detect alterations. Forensic document examiners use various tools and techniques like electrostatic detection, video spectral comparators, thin layer chromatography, and infrared reflectance to analyze physical characteristics of papers, inks, and indentations. Handwriting analysis specifically examines handwriting samples to identify writers and looks for distinguishing features even if attempts are made to disguise writing. Forensic document examiners also work to reconstruct shredded documents by piecing together individual shreds.
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This document discusses the careful handling and examination of charred documents. It notes that burnt documents are extremely fragile and require delicate care during collection and analysis. It recommends transporting containers holding burnt documents undisturbed to the lab when possible, and using cotton wool as padding. Individual charred fragments should be picked up with flat tweezers. The goal is to prevent further damage to important evidence during the investigation process.
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The document discusses different types of printers and how they can be identified during forensic examination. It describes impact printers, inkjet printers, and laser printers. It notes that impact printers may leave unique tool marks but laser and inkjet printers typically do not. The document also discusses photocopiers and how defects on the drum can be transferred and potentially link a copy to a specific machine. Fax machines often include transmission identifiers that may indicate the machine.
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1) Manual typewriters produce identifiable characteristics over time such as misaligned or damaged letters that can be used to match documents to a specific machine.
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This document discusses handwriting analysis and the examination of questioned documents. It outlines several potential causes of error in handwriting examinations, including placing too much weight on class similarities, analyzing inadequate samples, and allowing bias to influence conclusions. The document also discusses factors that can cause natural variation in handwriting like physical and mental conditions, writing instruments, and fatigue. Additionally, it provides attributes to look for in simulated forgeries like slow strokes, unnecessary retouching, and changes in writing angle.
10.Examination_of_Erasures.ppt
Erasures can be accomplished through either abrasive or chemical means. Abrasive erasures disturb the paper's surface finish and evidence may be visible under normal light or a microscope. Some samples require side lighting to detect erasures, placing a light source at an angle to the paper's surface. Erasures are also categorized as either chemical, where chemicals remove ink content to allow rewriting, or physical, where blades or pins alter the paper's surface and ink dispersion.
4.Characteristics_of_Handwriting.ppt
This document discusses the characteristics of handwriting that can be used to determine if a document is genuine or forged. It defines a genuine document as one issued by the proper authority with no signs of alteration. A forged document shows evidence of alteration, addition, erasure or other tampering. Both paper and paperless documents are discussed. Personal features like writing habits, style, pen pressure, shading, pen lifts, starts and stops are identified as characteristics unique to an individual that can be analyzed to detect forgery.
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero WaterTexas Alliance of Groundwater Districts
Presented at June 6-7 Texas Alliance of Groundwater Districts Business MeetingApplied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
Phenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
20240520 Planning a Circuit Simulator in JavaScript.pptx
Evaporation step counter work. I have done a physical experiment.
(Work in progress.)
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/Micronuclei test.M.sc.zoology.fisheries.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
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Applied Science: Thermodynamics, Laws & Methodology.pdf
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ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
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GBSN - Biochemistry (Unit 6) Chemistry of Proteins
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The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Compexometric titration/Chelatorphy titration/chelating titration
Compexometric titration/Chelatorphy titration/chelating titration
Immersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths Forward
paper_and_ink_examination.ppt
- 1. Ink & Paper examination PALLAVI KUMARI
- 2. Ink 1. Chromatography is a method of physically separating the components of inks. 2. Types – HPLC—high-performance liquid chromatography – TLC—thin-layer chromatography – Paper chromatography
- 3. Paper Chromatography of Ink Two samples of black ink from two different manufacturers have been characterized using paper chromatography.
- 4. Retention Factor (Rf) 1. A number that represents how far a compound travels in a particular solvent 2. It is determined by measuring the distance the compound traveled and dividing it by the distance the solvent traveled. 18
- 5. Paper Differences 1. Raw material 2. Weight 3. Density 4. Thickness 5. Color 6. Watermarks 7. Age 8. Fluorescence
- 6. • What are obliterations • What is IR luminescence • Why the same ink used for obliterated writing not possible to decipher FAQ'S
- 7. References • Morris, R. (2000). Forensic Handwriting Identification: Fundamental Concepts and Principles. Academic Press. • O. Hilton, Scientific Examination of Questioned Documents, CRC Press, Boca Raton (1982). • E. David, The Scientific Examination of Documents – Methods and Techniques, 2nd Edition, Taylor & Francis, Hants (1997). • Conway, J.V.P. (1959). Evidential Documents. Illinois: Charles C Thomas. • www.google.com/images/erasures • www.google.com/images/obliterations
Editor's Notes
- Kendall/Hunt
- Kendall/Hunt
- Kendall/Hunt
- Kendall/Hunt