Academic literature on the topic 'Purple skin'
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Journal articles on the topic "Purple skin"
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Lismaya, Lilis, Putut Marwoto, and Sunyoto Eko Nugroho. "Utilization of Organic Waste as A Natural Detector of Formaldehyde on-Campus Snacks." Jurnal Penelitian Pendidikan IPA 10, no. 6 (2024): 3519–26. http://dx.doi.org/10.29303/jppipa.v10i6.4255.
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The aim of this research is to reduce household organic waste through the use of organic waste as a natural detector of formaldehyde content in food snacks. The organic waste used in this study was red garlic skins, dragon fruit skins and purple sweet potato skins. This research is an experimental research. The stages of the research started with the extraction of anthocyanins from the three organic wastes, direct detection of formalin and detection of food ingredients. The formalin concentrations tested were 0.5%, 1%, 2%, 5% and 25%. Detection ability can be seen from the color change between control and formalin treatment. Garlic skin produces a red extract, dragon fruit skin produces an orange extract, and purple sweet potato skin produces a deep red extract. Test results on 20 samples of food snacks around the campus using the three organic waste extracts proved that all samples contained formaldehyde in varying concentrations. The highest 50% formalin content was found in yellow noodles and meatballs. The conclusion is that purple beetle skin, dragonfruit skin, and red garlic skin can be used as natural detectors for formalin in campus snacks.
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Wahyuni, Sri, Patang Patang, and Reski Praja Putra. "Kajian Minimum Inhibitor Concentration (MIC) dan Minimum Bactericidal Concentration (MBC) Ekstrak Kulit Terong Ungu (Solanum melongena L) Sebagai Pengembangan Antibakteri Herbal." Jurnal Pendidikan Teknologi Pertanian 9, no. 2 (2023): 249–62. http://dx.doi.org/10.26858/jptp.v9i2.686.
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Purple eggplant skin contains flavonoid which are antibacterial compounds, but mostly just becomes waste, even though purple eggplant skin extract has potential to be developed as herbal antibacterial. The purpose was to examine antibacterial activity, Minimum Inhibitor Concentration, and Minimum Bactericidal Concentration purple eggplant skin extract against pathogenic bacteria. Purple eggplant skin is extracted using the maceration method with 70% ethanol. The antibacterial activity test of purple eggplant skin extract was carried out by the method of diffusion using disc paper. Determination of MIC and MBC is carried out by a dense dilution method in a pour plate, with concentrations used 0%, 1.56%, 3.13%, 6.25%, 12.5%, 25%, 50%, and 100%. The results of measuring the diameter of the inhibitory zone are Staphylococcus aureus (7.4 mm), Bacillus cereus (8.8 mm), Salmonella sp. (7.0 mm), Escherichia coli (1.7 mm). These results showed purple eggplant skin extract had a good ability to inhibit pathogenic bacteria, except E. coli (weak inhibitory power). MIC value of eggplant skin purple extract was obtained at 12.5% in each test bacteria. At this concentration, the number of colonies was able to be reduced to 1 Colony log/mL in all three test bacteria. MBC value of eggplant skin purple extract was obtained at 50%, at this concentration, no bacterial growth was found in the three test bacteria.
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Yadnya, T. G. Belawa, AA A. S. Trisnadewi, I. Ketut Sukada, and I. Gusti Lanang Oka. "The Effect of Fermented Purple Sweet Potato (Ipomoea batatas L) Skin in Diets on Feed and Anthocyanin Consumption, Carcass Characteristics, Anthioxidant Profile and Meat Texture of Bali Duck." International Research Journal of Engineering, IT & Scientific Research 2, no. 9 (2016): 57. http://dx.doi.org/10.21744/irjeis.v2i9.268.
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An experiment was carried out to determine the effect of fermented purple sweet potato (Ipomoea batatas L) skin in diets on feed and anthocyanin consumption, carcass characteristics antioxidant profile and meat texture of Bali duck.. Five treatment diets were used in a completely randomized design (CRD) consisted of control diet A (diet without containing purple sweet potato skin), diet B containing 10% purple sweet potato skin, diet C containing 10% fermented purple sweet potato skin, diet D containing 20% purple sweet potato skin, diet E containing 20% fermented purple sweet potato skin.Each treatment consisted of four replications and each replicate had five ducks. The variables observed were feed and anthocyanin consumption,slaughter weight, carcass weight, carcass percentage, carcass physical composition, meat antioxidant profile (capacity antioxidant (CA), malondialdehide (MDA), and superoxide dismutase (SOD). Experiment results showed that diets with fermented or unfermented purple sweet potatoin diets treatments B, C, D, and E increased the anthocyanin consumption, slaughter weight, carcass weight, carcass percentage and meat percentage of duck carcass but decreased their fat and skin. Fermented purple sweet potato (Ipomoea batatas L) skin in C and E increased the antioxidant capacity(AC) and superoxide dismutase (SOD) while treatment B and D were not significantly different (P>0.05) to the control group. Malondialdehide (MDA) of the duck meat in treatment B,C, and D were significantly lower (P<0.05) compared to the control diet. Treatment E significantly increased the perimesium and endomesium of meat texture , but its experiment was not significantly different to the control group. It was concluded that substitution of fermented purple sweet potato (Ipomoea batatas L) skin in diets could improve of feed and anthocyanin, carcass characteristics, antioxidant profile, and meat texture of bali duck.
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Fatimatuzahro, Dewi, Dian Ayuning Tyas, and Saifullah Hidayat. "Pemanfaatan Ekstrak Kulit Ubi Jalar Ungu (Ipomea batatas L.) sebagai Bahan Pewarna Alternatif untuk Pengamatan Mikroskopis Paramecium sp. dalam Pembelajaran Biologi." Al-Hayat: Journal of Biology and Applied Biology 2, no. 1 (2019): 1. http://dx.doi.org/10.21580/ah.v2i1.4641.
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<p><em>Purple sweet potato (Ipomea batatas L.) is a tuber that has purple meat and skin. The purple color of purple sweet potato is usually used by the community as a food coloring, while the sweet potato skin is considered only waste and disposed of. This study aims to determine whether purple sweet potato skin extract can be used as an alternative dye on microscopic observations of Paramecium sp. The research used experimental approach with post test only control group design. The process of purple sweet potato skin extraction using chemical solvents is ethanol, acetic acid and water. The extractions with three treatments were A, B, and C respectively different ratios (25: 1: 5), (15: 1: 15) and (5: 1:25). The results of microscopic observations quantitatively analyzed using Anova One Way test obtained sign. &gt; 0.05 which means the purple sweet potato skin extraction results can be used as an alternative dye for microscopic observation of Paramecium sp. Qualitative analysis of the results of observations in which treatment A shows the best dye results in coloring Paramecium sp.</em></p>
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Deswani, Deswani, Sri Djuwitaningsih, Harpolia Cartika, and Paul Malau. "Irritation Test of Cream Preparations Made from Purple Cabbage Extract Against Healthy Skin Using The Path Test Method." JURNAL INFO KESEHATAN 23, no. 1 (2025): 1–9. https://doi.org/10.31965/infokes.vol23.iss1.1458.
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Testing for skin irritation caused by new substances is a critical component of safety evaluation procedures. Pharmaceutical formulations and active ingredients intended for topical application have the potential to cause skin irritation, necessitating thorough safety assessments prior to public distribution. This study aimed to evaluate the primary irritation potential of a purple cabbage extract cream using the patch test method on healthy older adults. The experimental research involved 18 volunteers, who were administered 0.625% purple cabbage extract cream and a placebo preparation without the test substance. The test materials were applied twice daily over a period of 72 hours. Observations were conducted at baseline (0 hours) and at 24, 48, and 72 hours post-application. The degree of skin irritation was then calculated based on the recorded data. The results indicated a primary irritation index of 0.1, suggesting that the purple cabbage extract cream did not cause skin irritation. It can be concluded that the purple cabbage extract cream is safe for skin application in the tested population. Future research should explore the effects of purple cabbage cream on different skin locations, as skin sensitivity can vary across different areas of the body.
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Deswani, Deswani, Sri Djuwitaningsih, and Harpolia Cartika. "Irritation Test of Cream Preparations Made from Purple Cabbage Extract Against Healthy Skin Using The Path Test Method." JURNAL INFO KESEHATAN 22, no. 4 (2024): 858–66. https://doi.org/10.31965/infokes.vol22.iss4.1458.
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Testing for skin irritation caused by new substances is a critical component of safety evaluation procedures. Pharmaceutical formulations and active ingredients intended for topical application have the potential to cause skin irritation, necessitating thorough safety assessments prior to public distribution. This study aimed to evaluate the primary irritation potential of a purple cabbage extract cream using the patch test method on healthy older adults. The experimental research involved 18 volunteers, who were administered 0.625% purple cabbage extract cream and a placebo preparation without the test substance. The test materials were applied twice daily over a period of 72 hours. Observations were conducted at baseline (0 hours) and at 24, 48, and 72 hours post-application. The degree of skin irritation was then calculated based on the recorded data. The results indicated a primary irritation index of 0.1, suggesting that the purple cabbage extract cream did not cause skin irritation. It can be concluded that the purple cabbage extract cream is safe for skin application in the tested population. Future research should explore the effects of purple cabbage cream on different skin locations, as skin sensitivity can vary across different areas of the body.
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Denny, E. G., D. C. Coston, and R. E. Ballard. "Peach Skin Discoloration." Journal of the American Society for Horticultural Science 111, no. 4 (1986): 549–53. http://dx.doi.org/10.21273/jashs.111.4.549.
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Abstract Black, purple, and tan discolorations have been found within red-pigmented areas of the peach fruit skin. Scanning electron and light micrographs show damage caused by defuzzing and roller drying, which could facilitate entry of causal agents associated with peach skin discoloration. Comparisons of reflectance and transmittance spectra (380-700 nm) of discolored (purple) and nondiscolored (red) peaches show the mean reflectance value for discolored peaches is 100% darker than nondiscolored peaches. However, transmittance spectra of acidified extracts of discolored and nondiscolored peach skins are similar throughout these wavelengths. Extracted pigment color was altered by pH changes and metallic ion concentration. At low pH, discoloration may be caused by ion complexing with anthocyanin pigment. At high pH, discoloration may result from alkaline hydrolysis of the pigment molecule.
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Schwartz, Chelsea, Raj Watson, and David Cleaver. "A Rare Presentation of Self-Resolving Purple Fingers." SKIN The Journal of Cutaneous Medicine 7, no. 5 (2023): 1025–29. http://dx.doi.org/10.25251/skin.7.5.10.
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Achenbach syndrome is a rare, benign, self-limiting, syndrome of unknown etiology. Here, we report a 66-year-old female who presented to the dermatology clinic with waxing and waning non-palpable purpura for the last year on the volar aspect of her hands bilaterally. The patient admitted to tingling prior to the onset of the purpura and mild tenderness following presentation. The purpura would spontaneously resolve without discoloration or scarring after 2-7 days. The patient stated these episodes can occur anywhere from a few times a month to every 1-2 months. Evaluation and work-up performed by her primary care physician and rheumatologist did not reveal an explanation for her symptoms. Two punch biopsies were performed and revealed a perivascular lymphocytic infiltrate with extravasted erythrocytes and pigmented macrophages consistent with a pigmented purpuric dermatosis. Immunofluorescence was negative. The diagnosis of Achenbach syndrome was made by diagnosis of exclusion. Reassurance was provided to the patient and she was given DerMend Bruise formula cream, which contains retinol, glycolic acid, arnica oil, ceramides, niacinamide, and phytonadione, to monitor for improvement of her symptoms. It is important for healthcare providers to be aware of the benign nature of this syndrome to be able to provide reassurance to patients and avoid an unnecessary, more invasive evaluation.
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Parkins, G. J., R. Jackson, and G. R. Wylie. "Purple skin nodules - what lies beneath?" Journal of the European Academy of Dermatology and Venereology 30, no. 5 (2015): 857–59. http://dx.doi.org/10.1111/jdv.13026.
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Budianto, Nugroho Eko Wirawan, and Hairullah Hairullah. "Difference of Effectiveness Acarbose with Ethanol Extract Purple Eggplant’s Peel (Solanum melongena L) to Reduce Blood Sugar Levels in White Rat (Rattus norvegicus) Induced by Sucrose." Jurnal Ilmiah Kedokteran Wijaya Kusuma 6, no. 2 (2017): 14. http://dx.doi.org/10.30742/jikw.v6i2.54.
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Acarbose is an oligosaccharide human made who is a competitive inhibitor acarbose and can inhibit the action of the enzyme α-glucosidase, causing a slowdown in the digestion of carbohydrate compounds. Purple eggplant skin is included in the flavonoid compound. Purple eggplant skin as well as an antioxidant that can control blood glucose levels and prevent complications of diabetes. Purple eggplant skin contains flavonoid kaempferol and has the effect of inhibiting the enzyme alpha-glucosidase. Based on these researchers want to know the difference in effectiveness between the ethanol extract of purple eggplant skin and acarbose to decrease blood sugar levels of mice. The study population using white rats with a total sample size of 30 rats. Research data analysis using One Way Anova Test. Methods: Male rats strain Wistar were divided into 5 groups. 1) Control (CMC Na 1 ml io), 2) Group 1 (The ethanol extract of 50 mg / kg in the CMC Na io), 3) Group 2 (The ethanol extract 100 mg / kg in CMC Na io), 4) Group 3 (the ethanol extract 200 mg / kg in the CMC Na io), 5) Group 4 (Acarbose 4.5 mg / kg in distillated water io). The result showed ethanol extract of purple eggplant skin in group 2 showed the best effectiveness in lowering blood sugar levels of white rats by oral sucrose injection. And there is no significant difference between the effectiveness of the ethanol extract of purple eggplant skin and acarbose in lowering blood sugar levels of white rats by oral sucrose injection.
Dissertations / Theses on the topic "Purple skin"
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Aiston, Anna Katherine. "Skein theoretic idempotents of Hecke algebras and quantum group invariants." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307662.
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Heck, Bryan William. "The Binge and Purge of Celsr1| A Description of Celsr1-Mediated PCP Trans-Endocytosis and Expanded Roles for Vangl2 During Mitotic Internalization in the Mammalian Skin." Thesis, Princeton University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10745410.
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<p> Celsr1 is an atypical cadherin central to the asymmetric cell-cell complexes that define planar cell polarity (PCP). Previous work has shown that Celsr1 undergoes bulk endocytosis during cell division in the basal layer of the mouse skin. Here, we report the unexpected finding that Celsr1-mediated intercellular complexes remain intact during mitotic internalization, resulting in uptake of Celsr1 and associated PCP components into dividing cells from their neighbors in a process known as trans-endocytosis. Our observations suggest that the bulk of this internalized pool of Celsr1 is targeted for degradation. Furthermore, Celsr1 internalized from neighboring cells carries with it additional core PCP proteins, including the posteriorly-enriched Fzd6 and anteriorly-enriched Vangl2. However surprisingly, Vangl2 originating from the dividing cell is excluded from mitotic endosomes and remains associated with the membrane. Overexpression of Vangl2 in vitro is sufficient to interfere with Celsr1 internalization, and mitotic internalization of Celsr1 within the skin is delayed at anterior cell surfaces. We propose that Vangl2 stabilizes Celsr1 at the membrane and its dissociation from Celsr1 is a prerequisite for Celsr1 turnover. Together our results indicate that mitotic turnover of Celsr1 depends on the displacement of Vangl2 from PCP complexes and results in the non-autonomous turnover of PCP proteins from neighboring cells.</p><p>
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Kocaoglu, Nihan. "A Semperian Approach To Artificial Light As A Building Material." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613058/index.pdf.
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The aim of this study is to understand the purpose, employment and place of specific materials in general, and &ldquo<br>light&rdquo<br>in particular, in architectural production. This thesis is a critical reconsideration of light as a building material, encompassing all the metaphorical connotations that the term suggests: light versus heavy<br>&ldquo<br>art form&rdquo<br>versus &ldquo<br>core form&rdquo<br>&ldquo<br>figuration&rdquo<br>versus &ldquo<br>tectonic&rdquo<br>ornamentation versus construction<br>craft production versus structural logic and abstraction versus materiality. All these binary oppositions combine to provide a conceptual framework for a contemporary interpretation of &ldquo<br>light architecture&rdquo<br>. Apart from its visual qualities, light plays an essential role in the production of architecture revealing the architectural form, function, mass, texture and context. When considered as an architectural material, light also has the ability to transpose the building into an &ldquo<br>art form&rdquo<br>as a monumental object, and to provide a dematerialized reality. When speaking of architectural materials, an analysis of the tectonic aspects of architecture is a prerequisite. It was Gottfried Semper&rsquo<br>s seminal work that first introduced the rich terminology of the material qualities in the products of architecture. The term &ldquo<br>textile&rdquo<br>, as an abstract procedure of Semper&rsquo<br>s theory, leads to a shift from primitive fabrics to contemporary modulation techniques and becomes a crucial element in the evaluation of such key words as &ldquo<br>dress&rdquo<br>, &ldquo<br>mask&rdquo<br>, &ldquo<br>skin&rdquo<br>, &ldquo<br>membrane&rdquo<br>and &ldquo<br>pure form&rdquo<br>. Following the theory of Semper, &ldquo<br>textile&rdquo<br>can be considered as a starting point for the conceptualization of these key words. Through specific examples associated with light, The Bosphorus Bridge, The Dogan Media Centre, The Kunsthaus Graz and the Image Mill, this study aims to analyze the historical and the traditional materials introduced by Semper together with the contemporary and the modern materials inserted by Bernard Cache and suggests the introduction of light as a modern and contemporary material that may be applied to the abstract procedures defined by Semper as &ldquo<br>textile&rdquo<br>, &ldquo<br>ceramics&rdquo<br>, &ldquo<br>tectonics&rdquo<br>and &ldquo<br>stereotomy&rdquo<br>. An in-depth reading of Semper and those that followed him: Kenneth Frampton, Harry Francis Malgrave, Karl Bö<br>tticher, Wolfgang Hermann, Bernard Cache and Carolina A. van Eck, will provide a conceptual framework for the evaluation of the material qualities of light design in architecture.
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Thies, Matthew John. "Controlling game music in real time with biosignals." 2012. http://hdl.handle.net/2152/19914.
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Effective game music is typically adaptive, interactive, or both. Changes in game music are usually influenced by the current state of the game or the actions of the player. To provide another dimension of interactivity, it would be useful to know the affective state of the human player. Biosignals are continuous signals generated by a person that can be measured over time, and have been shown to reflect affective state. This project demonstrates that control signals can be gathered from the player and mapped to musical parameters. Using a heart rate sensor and galvanic skin response sensor built from open source designs, we have used biosignals to control music playback while playing four games from different genres.
A system for controlling game music with biosignals is computationally cheap, and can provide data that is useful to other game systems. The prototype developed for this project is basic, but with further research and development, we believe such a system will greatly improve the immersive experience of video games by involving the player on a new level.<br>text
Books on the topic "Purple skin"
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Tundaleva, Irina. Sanitation and hygiene of hairdressing services. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/979063.
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The purpose of the tutorial is to highlight the specifics of sanitary and hygienic requirements for the work of hairdressers and their employees. The specific features of the applied technologies for disinfection of instruments are described. Issues related to the need to comply with sanitary and hygienic standards are highlighted.
 The section of Microbiology related to the field of hairdressing services is considered. The topics of preventing the spread of infectious diseases are covered in detail, and the types of skin diseases are described. A separate section is devoted to competent care of the scalp and hair, face skin, nails.
 Meets the requirements for the profession of a hairdresser in accordance with the Federal state educational standard of secondary professional education of the last generation in the specialty 43.02.13 "technology of hairdressing".
 For students who receive secondary special education in hairdressing specialties.
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sheila, linn. Skin Care Hands Purple Flowers,women Notebook. Independently Published, 2020.
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Britt, Renelly. Purple Elephant: Love the Skin You're in Series. Jesus Girlz, LLC, 2019.
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Stationery, Spring Hill. My Crochet Projects: Modern Crochet Lady with Dark Brown Skin Tone on Purple Background, Glossy Finish. Independently Published, 2019.
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Trila, Borny. Notebook : PURPLE Elephant Skin Print Composition Notebook - College Ruled 110 Pages - Large 8. 5 X 11 : Textured Notebook - for Any Day Use: Purple Composition Notebook. Independently Published, 2021.
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Stationery, Spring Hill. My Knitting Projects: Modern Knitting Woman with Dark Brown Skin Tone on a Purple Background, Glossy Finish. Independently Published, 2019.
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TENS equipment, techniques, and biophysical principles. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199673278.003.0003.
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The purpose of the electrical current delivered during TENS is to generate nerve impulses in peripheral nerve fibres to modulate the flow of nociceptive information and reduce pain. The characteristics of the electrical currents (i.e. stimulating parameters) and physiology at the electrode–skin interface will influence which nerve fibres are excited. Conventional TENS and acupuncture-like TENS are two techniques developed to stimulate different types of nerve fibres. The purpose of this chapter is to overview the biophysical principles of TENS and to explain how these principles have been used to inform clinical practice by covering TENS equipment and the standard TENS device, the electrical characteristics of currents produced by a standard TENS device, lead wires and electrodes, the physiology at the electrode–skin interface including nerve fibre activation by TENS, and TENS techniques used in clinical practice, including conventional TENS and acupuncture-like TENS (AL-TENS).
Book chapters on the topic "Purple skin"
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Eng, William, and Martin J. Walsh. "37 Year Old White Male with Multiple, Brown, Purple Nodules on Arms and Legs." In Clinical Cases in Infections and Infestations of the Skin. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14295-1_10.
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Yilmaz, Beyza Nur, and Turgut Taskin. "Phytochemical and Pharmaceutical Properties of Sumac (Rhus Coriaria L.): Used As Spices in Türkiye." In Medicinal Spices. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359340.13.
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Rhus coriaria L. (sumac) is a member of the Anacardiaceae family and has been identified with around 150 species. Rhus genus grows in different parts of the world and the only species in our country is Rhus coriaria. Ground dried stone fruits are frequently used to create a strong purple spice. Because of the sour and acidic flavor of the dried, dark red, powdered fruits of this plant, sumac is used as a seasoning in salad dressings and other dishes in Turkey. Because of its growing use in the food coloring and preservation, veterinary applications, cosmetic and pharmaceutical industries, and animal skin processing technology, R. coriaria has a significant economic impact.
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Srivastava, Jyoti, Joyabrata Mal, Manju Verma, and Rupika Sinha. "Mini-review on Inhibitors of Human Tyrosinase." In Proceedings of the Conference BioSangam 2022: Emerging Trends in Biotechnology (BIOSANGAM 2022). Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-020-6_10.
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AbstractMelanin is a major pigment of human skin that protects the skin from harmful ultraviolet radiation, DNA damage and oxidative stress. However, the excess accumulation of melanin may lead to various hyperpigmentation-related diseases. Tyrosinase is a copper containing enzyme that regulates the rate-limiting step of melanin synthesis. So, inhibiting tyrosinase is the crucial target for researchers for the treatment of hyperpigmentation. Unfortunately, almost all the literature is based on mushroom tyrosinase (mTYR) for their application on humans as pure human tyrosinase (hTYR) is difficult to isolate. Since presently used tyrosinase inhibitors are developed using mushroom tyrosinase, they are insufficient to match the affinity, selectivity and efficacy required to target the human tyrosinase. Therefore, there is an urgent need for identifying a selective tyrosinase inhibitor that matches the selectivity and safety standards of human tyrosinase. This mini-review is focused on the tyrosinase inhibitors developed and evaluated using human tyrosinase.
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Colboc, Hester, and Sylvie Meaume. "Scar and Scarring in the Elderly." In Textbook on Scar Management. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_44.
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AbstractDespite the aging of the population, little attention is paid to the development of specific care protocols appropriate to the skin and even less to the scars in the elderly. The purpose of this chapter is to highlight common clinical problems with scar and scarring in older adults and provide appropriate advices on protocols for managing them. The literature review was carried out to look for the evidence-based elements, but, if the subject of scars is sometimes found, the elements relating specifically to scars in old age are nonexistent. Unsurprisingly, practices vary widely and are carried out according to habit rather than science. Based on our clinical experience of dermatologist and geriatrician and some literature data, some pathways for future research on scars in elderly are proposed.
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Chapelan, Alexis. "Repulsiveness and Dehumanisation." In Postdisciplinary Studies in Discourse. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-49238-9_5.
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AbstractFar from being a purely theoretical construct, anti-Jewish prejudice has also been inscribed into the very materiality of Jewish bodies, through a host of tropes and metaphors drawing on representations of physical corruption and repulsiveness. The pathologisation of the Jewish body predates biological antisemitism and has roots in Medieval antisemitism. Appearance, skin colour, hygiene or alimentation are external manifestations which mark the Jew as “other” or “foreign.” As the demonic Other was the archetype of maleficent alterity in Christian Europe, it was even believed that Jews have devilish horns, which explained the tradition of head-covering. Another bizarre medieval folk belief was that Jewish males menstruated; this allegedly “impure” bleeding was thought to be a punishment for Judas’ treason of Jesus. This also maps onto blood libel accusations, as the monthly loss of blood had to be compensated by consuming the blood of Christians. Such notions later fed into the stereotype of Jewish men being effeminate, weak and anaemic, as opposed to virile and healthy Aryans.
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Grüger, Joscha, Tobias Geyer, Martin Kuhn, StephanA Braun, and Ralph Bergmann. "Verifying Guideline Compliance in Clinical Treatment Using Multi-perspective Conformance Checking: A Case Study." In Lecture Notes in Business Information Processing. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98581-3_22.
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AbstractClinical guidelines support physicians in the evidence-based treatment of patients. The technical verification of guideline compliance is not trivial, since guideline knowledge is usually represented textually and none of the approaches to computer-interpretable guideline representation has yet been able to establish itself. Due to the procedural nature of treatment sequences, this case study examines the applicability of a guideline process model to real hospital data for verification of guideline compliance. For this purpose, the limitations and challenges in the transformation of clinical data into an event log and in the application of conformance checking to align the data with the guideline reference model are investigated. As a data set, we use treatment data of skin tumor patients from a cancer registry enriched by hospital information system data. The results show the difficulty of applying process mining to medically complex and heterogeneous data and the need for complex preprocessing. The variability of clinical processes makes the application of global conformance checking algorithms challenging. In addition, the work shows the semantic weakness of the alignments and the need for new semantically sensitive approaches.
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"Purple colouration." In Paediatric Dermatology, edited by Sue Lewis-Jones and Ruth Murphy. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198821304.003.0031.
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The many disorders causing purple marks or discolouration in the skin are defined in this chapter with short summaries and clinical images for many. Differentiation is made between petechiae and purpura, and important causes are outlined. These include trauma (bruising); abnormalities of platelets and other clotting factors; vessel fragility and sepsis. Particular attention is given to meningococcal septicaemia and its diagnosis and management according to national guidelines. A short section on other infective causes is also included. There is a description of the investigation and management of cutaneous vasculitis that includes Henoch–Schönlein purpura. Special considerations for purpura in the neonate are given and the chapter ends with the diverse causes of purple patches other than purpura.
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"THE SKIN I’M IN." In My Life in the Purple Kingdom. University of Minnesota Press, 2020. http://dx.doi.org/10.5749/j.ctv15kxfzc.8.
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Keyser, Catherine. "“A Purple Fluid, Carbon-Charged”." In Artificial Color. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190673123.003.0002.
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Jean Toomer worked as a soda jerk in high school over his grandmother’s objections and found inspiration in the soda fountain. Through it, he derived a metaphorical alternative to the one-drop rule, imagining instead essences that effervesced past the skin and colors that exceeded the monochromatic division of black and white. In Toomer’s masterpiece of experimental modernism, Cane (1923), the trope of liquid sugar provides a model for formal experimentation and fluid identities. Toomer follows this trope from cane syrup to soda pop, from copper boiling pots to Chero-Cola advertisements. In the last section of Cane, Toomer imagines a white man transformed into “a purple fluid, carbon-charged,” an image that he uses to rebuke the segregated culture of the urban North.
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Morris-Jones, Rachael, Ann-Marie Powell, and Emma Benton. "Asymptomatic Purple Skin Lesions Appearing on the Limbs and Trunk." In 100 CASES in Dermatology, edited by P. John Rees. CRC Press, 2011. http://dx.doi.org/10.1201/b13487-82.
Full textConference papers on the topic "Purple skin"
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Kumar, R., D. Thenarasu, R. Ravindranath, and D. B. Chalwade. "Damage Behaviour of Rotorcraft End Plate under High Velocity Bird Impact." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11525.
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The finite element model is developed for simulating the bird strike test of rotorcraft End plate using the bird numerical modeling techniques. The main design goal is the satisfactory impact resistance of the composite structures in the case of bird strike. The design concept is based on the absorption of the major portion of the bird kinetic energy by the composite skins, in order to protect the inner honeycomb core from damage, thus preserving the End plate functionality for safe landing. To this purpose, the End plate skin is fabricated from composite layers, which unfold under the impact load and increase the energy absorption capability. The numerical modelling of bird strike using the Lagrangian approach and Smooth Particle Hydrodynamics formulation and the critical design parameters are considered in carrying out the analysis. A numerical model of this problem has been developed with an explicit finite element code Autodyn. Analysis is carried out for the developed model using the test parameters. Numerical results by means of bird modelling approaches are substantiated with experimental test results. The results obtained from the analysis and test shows close conformity implying their appropriateness in the simulation of bird strike.
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Maldonado, Julio G., John MacDonald, Phil Dent, and Chris Fowler. "Sour Service Fitness for Purpose Testing of Linepipe Using Full Ring, 4-Point BB and Large DCBs." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11229.
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Abstract Fitness for purpose Sulfide Stress Cracking (SCC) testing has been undertaken in a mildly sour environment on thick walled (47.2 mm) linepipe using full ring tests, full thickness 4-point bend (4PB) specimens, standard size and large-scale double-cantilever beam (DCB) specimens. The full ring test method and full thickness 4PB specimens were selected to retain the original surface condition of the linepipe, since an intermittent shallow ‘hard’ skin was present. The KISSC of the material was determined using ‘modified’ NACE TM0177 – Method D DCB specimens with an increased width and length in order to prevent arm bending, which was a concern due to the relatively low strength of the DNV GR450SD steel and comparative tests were also conducted using standard size specimens. In addition, the test duration for the DCB specimens was increased to 21 days to take into account the mildly sour environment. The arm displacement for the large scale DCB specimens was determined using the KIAPPLIED value and load vs. displacement data. Fitness for purpose testing using full ring and 4PB tests demonstrated the suitability of the linepipe for the set of operating conditions evaluated in this case. Similarly, valid large scale DCB testing results were obtained which met project specific requirements. The paper describes the development of the methodology for the full ring, full thickness 4PB and large scale DCB specimens and the results obtained from these tests.
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Angelats-Silva, Luis Manuel, Santiago M. Benites, Daniel Alonso Delfin-Narciso, et al. "Use of residual purple sweet potato (Ipomoea batatas L.) skin pigment in dye-sensitized solar cells." In 22nd LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2024): “Sustainable Engineering for a Diverse, Equitable, and Inclusive Future at the Service of Education, Research, and Industry for a Society 5.0.”. Latin American and Caribbean Consortium of Engineering Institutions, 2024. http://dx.doi.org/10.18687/laccei2024.1.1.901.
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Weaver, Kyle, Jeong-Hoi Koo, Tae-Heon Yang, and Young-Min Kim. "Capturing Age-Dependent Properties of Human Skin Using Magnetorheological Elastomers." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8015.
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Artificial and synthetic skins are widely used in the medical field; used in applications ranging from skin grafts to suture training pads. There is a growing need for artificial skins with tunable properties. However, current artificial skins do not take into account the variability of mechanical properties between individual humans as well as the age-dependent properties of human skin. Furthermore, there has been little development in artificial skins based on these properties. Thus, the primary purpose of this research is to develop variable stiffness artificial skin samples using magnetorheological elastomers (MREs) whose properties that can be controlled using external magnetic fields. In this study, multiple MRE skin samples were fabricated with varying filler particle volume contents. Using a precision dynamic mechanical analyzer, a series of indenting experiments were performed on the samples to characterize their mechanical properties. The samples were tested using a spherical indenter that indented a total depth of 1 mm with a speed of 0.01 mm/s and unloaded at the same rate. The results show that the modulus or stiffness increases significantly as the iron percent (w/w) in the sample increases. Additionally, the stiffness of the sample increases proportional to the intensity of the applied external magnetic field. To assess the MRE samples’ variability of properties, the testing results were compared with in vivo human skin testing data. The results show the MRE samples are feasible to represent the age-dependent stiffness demonstrated in in vivo human skin testing. The MRE materials studied will be further studied as a variable-stiffness skin model in medical devices, such as radial pulse simulators.
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Feng, Ning, Liwu Liu, Yanju Liu, and Jinsong Leng. "Structural Analysis of Morphing Airfoils for Camber Adaptive Wing." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9116.
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The chord-wise bending airfoil wing could be achieved by employing a kind of active morphing skin which was embedded with pneumatic muscle fibers. This camber morphing structure involves the discipline of structural mechanics which is analysed in this paper. Carbon fiber composite plate is utilized for the upper surface skin of the chord-wise bending airfoil structure, so the approach described in this paper starts from deformation analysis of the upper surface skin based on the classical laminate theory. Energy method was also used for solving the shape function of the upper surface skin which was under the condition of pure bending. While the active morphing skin was actuated at a series of discrete actuation pressures, the fixed geometrical shapes of the chord-wise bending airfoil structure could be obtained. Meanwhile the finite element method (FEM) was used for analyzing this chord-wise bending airfoil structure and the deformed shapes of the upper surface skins would be obtained. Deformed shapes of the upper surface skins between numerical analysis result and FEM analysis result were compared in this paper. This structural analysis work provides useful design and camber morphing characteristics for chord-wise bending airfoil structure. Developers of future shape-adaptive air vehicles have been provided with structural design tools.
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Lask, Gary, Patrick K. Lee, Manouchehr Seyfzadeh, et al. "Nonablative Laser Treatment of Facial Rhytides." In Lasers in Dermatology: Bio-Optics and Treatment of Human Skin. Optica Publishing Group, 1997. http://dx.doi.org/10.1364/lid.1997.sab5.
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The purpose of this study is to evaluate the safety and effectiveness of nonablative laser treatment of facial rhytides (e.g., periorbital wrinkles) using the New Star Model 130 Nd:YAG laser system. Previous ablative laser skin resurfacing (LSR) using, for example, a pulsed or scanned CO2 laser has been accompanied by complications such as persistent erythema, dyspigmentation, scarring, and infection. A nonablative laser modality may be effective in reducing both the severity of wrinkles and the incidence of morbidity presently associated with LSR.
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Marchand, Regis, Catherine Kern, Remi Laville, and Alicia Roso. "Eco-designed Virgin Coriander Seed Oil: A Food Supplement Solution to Soothe Sensitive Skin." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/skve8239.
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Sensitive or reactive skin is a common condition that affects many people, characterized by the occurrence of unpleasant sensations, such as stinging and burning, in response to stimuli that normally should not cause such sensations. The main hypothesis attributed to the occurence of sensitive skin is the disruption of the epidermal barrier and greater penetration of substances such as irritants. In keratinocytes, these substances can activate the NF-κB pathway, which plays an important role in orchestrating inflammatory responses. The regulation of NF-κB signaling is a key issue in controlling skin inflammation. Neurosensory dysfunction is also a mechanism to consider. Some cutaneous nerve endings express TRPA1 (transient receptor potential ankyrin 1), involved in nociception, itching and neurogenic inflammation. Petroselinic acid (C18:1n-12), which accounts for 60-75% of the fatty acids in coriander vegetable oil, has already demonstrated anti-inflammatory activity (Alaluf et al., 2002), used in the cosmetic and functional food industry. Our objective was to develop an eco-designed pure nutritional coriander vegetable oil and evaluate its effect in vitro and in vivo. The effect of coriander seed oil, obtained in one step by extrusion, was evaluated using two in vitro models: (1) inflammation model using a human keratinocytes cell line transfected with the luciferase reporter gene under the control of NF-κB+, (2) innovative in vitro keratinocytes-neurons co-culture model in which TRPA1 activation was followed. 0.0001% coriander seed oil showed a significant 48% protection of keratinocytes from NF-κB activation and 61% of keratinocytes-neurons co-culture from TRPA1 activation at 0.001%, both mechanisms being involved in occurence of sensitive skins. A double-blind, placebo controlled, pilot clinical study in volunteers with sensitive skin confirmed its efficacy on redness of the skin and on unpleasant sensations of stinging and itching. Thus, coriander seed oil is a promising soothing ingredient for sensitive skins.
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GOYAL, VIJAY K., and JACOB GAGLIANO. "WEIGHT EFFECT OF BUCKLED COMPOSITE STIFFENED PANELS UNDER PURE SHEAR LOADING." In Proceedings for the American Society for Composites-Thirty Eighth Technical Conference. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/asc38/36518.
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Composite hat-stiffened skin panels are of great interest to modern aircraft design because of their high strength and stiffness. This work aims to computationally predict damage within hatstiffened composite panels under pure shear loading. As the panels enter the post-buckling regime, matrix cracking, fiber rupture and delamination are crucial. The Enhanced Schapery Theory can capture the intraply damage while the Cohesive Zone Model delamination between the skin plies and debonding between skin-hat interfaces. For hat-stiffened panels, the four, three, and two stringers configurations experienced damage initiation at 166.6%, 295.0%, and 739.6% of the buckling load, respectively. Matrix cracking initiated in the panels least stiff to transverse loading, while panels more resistant to shear see debonding at the skin-hat interface initiated first. All configurations predicted delamination at the skin ply 1-ply 2 interface as the last damage mode before penetrating deeper into the skin. Debonding between the stringers and the skin was predicted as the primary driver for ultimate failure.
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Ibrahim Mohammed, Khetam. "Effect of Silver Nanoparticles on Dermatophytes Isolated from Palms Of Hands & Feet." In XIII. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2025. https://doi.org/10.47832/minarcongress13-5.
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The dermatophytosis skin infection is caused by filamentous fungi and can caused by some of types of yeasts . The prevalence of these common mycoses is about 20% of the population. These fungi have demonstrated strong resistance to some of the drugs used to treat them in the past few years, it has been noted. Nanoparticles, whether silver nanoparticles or gold nanoparticles, and other types of nanoparticles show great effectiveness against human pathogens , whether bacterial or fungal ,They have the ability to change The cell membrane's structure until it causes its death. The purpose of this research is to test effectiveness of nanoparticles (Ag nanoparticles ) against the fungi that cause skin infections in patients . This has been demonstrated by their high effectiveness against the Trichophyton fungus, as here in this research their effectiveness was studied on fungi isolated from the feet and the hands. Which were diagnosed according to agricultural and microscopic features. The effectiveness of the silver nanoparticles solution was tested at concentrations of 2%, 4%, and 8% against the diagnosed Trichophyton fungus isolated from the skin infected with the fungus. It was found to have a high effectiveness for the silver nanoparticles , especially at the concentration of 8%, which is the highest concentration used against this pathogen compared to the commercial antifungal
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Soni, Ankita, and Kirti Rawal. "Study the Effect of Body Postures on Skin Conductance Response and Heart Rate." In International Conference on Women Researchers in Electronics and Computing. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.114.5.
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Skin Conductance (SC) and Heart Rate (HR) are the two basic tools to evaluate any small physical change that occurred in the human body. Skin conductance demonstrates the electrical conductivity response of the skin. Skin conductance response is the evaluating tool of sympathetic activation of the autonomic nervous system (ANS). When external or internal sensations arise that are physiologically stimulating, the skin temporarily becomes a stronger conductor of electricity. Heart rate shows the beat to beat interval of our heart. The purpose of this paper is to explore the effectiveness of various physical activities on skin conductance and heart rate. To this end, on the self-recorded data set of twenty subjects, the sample entropy is evaluated for the SC, and HR is evaluated. The mean value of skin conductance and heart rate was also examined along with the p-value to evaluate the impact of body positions on the skin conductance response and heart rate. For this purpose, the skin conductance response and HR is recorded for 10 minutes in the position of supine and standing simultaneously. By evaluating the results, it is observed that the value of skin conductance (SC) response and heart rate are increased as the activity is shifted from supine to standing. From the results, it is inferred that there is a substantial decrease in the sample entropy of SC and HR in the standing posture, which indicates an increase in the sympathetic activation of the autonomic nervous system (ANS) in the standing position. A positive correlation is found between the response of skin conductance and heart rate when the position of the body is changed from supine (rest) to standing posture.
Reports on the topic "Purple skin"
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Shaffer, Austin, Justin Tweet, and Vincent Santucci. Colorado National Monument: Paleontological resource inventory (sensitive version). National Park Service, 2024. http://dx.doi.org/10.36967/2303444.
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Colorado National Monument (COLM) in western Colorado was established on May 24, 1911 with the purpose of preserving, understanding, and enjoying the natural and cultural resources of the landscape, focusing on the history, erosional processes, and geology present. Although not explicitly mentioned in the monument?s purpose statement, the paleontological resources of COLM are nevertheless important. Significant fossils have been known from the area since the late 19th and early 20th centuries, and from COLM specifically within a few decades of the monument?s founding. The direct urban interface of COLM with Colorado?s Grand Valley provides unique management concerns for fossils and other resources of the monument. While COLM preserves a long geologic history (roughly 1.7 billion years ago to the present), the fossils preserved at the monument mostly come from sedimentary rocks of the Mesozoic Era. The paleontological resources of COLM include both body fossils and trace fossils of a wide variety of organisms (e.g., freshwater mussels, dinosaurs, plants) representing diverse paleoenvironments. In order to assess the paleontological resources of COLM, a field inventory was conducted from April to November 2023, visiting all previously reported fossil sites and documenting new localities. A total of 226 paleontological localities were verified during this fieldwork, of which nearly two-thirds (146 sites) were newly documented. Two more were discovered in March 2024. These 228 localities are distributed throughout much of the monument and many of the geologic units, with higher concentrations present in certain units (e.g., the Morrison Formation). Fieldwork was supplemented by the review of published and gray literature and assessment of COLM paleontological collections. A number of significant paleontological discoveries were made during this inventory, including the first documented fossils (dinosaur tracks, plant fossils, and dinosaur skin) from the Naturita Formation within COLM and multiple novel fossil occurrences (e.g., likely the oldest-known fish otoliths in North America and possibly one of the only Jurassic ankylosaur tracks known globally). When considered alongside previously identified significant fossil finds from COLM (e.g., one of only three known turtle tracksites in the Morrison Formation and potentially one of the only known lizard trackways in the same unit), the paleontological resources of the monument are of high scientific importance. Future research on the paleontological resources of COLM has a high potential for identifying important fossil specimens and/or describing new species. This report provides foundational data on the scope, significance, and distribution of paleontological resources at COLM and provides recommendations to support the management, interpretation, and research of these resources.
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Shaffer, Austin, Justin Tweet, and Vincent Santucci. Colorado National Monument: Paleontological resource inventory (public version). National Park Service, 2024. http://dx.doi.org/10.36967/2303613.
Full textAbstract:
Colorado National Monument (COLM) in western Colorado was established on May 24, 1911 with the purpose of preserving, understanding, and enjoying the natural and cultural resources of the landscape, focusing on the history, erosional processes, and geology present. Although not explicitly mentioned in the monument?s purpose statement, the paleontological resources of COLM are nevertheless important. Significant fossils have been known from the area since the late 19th and early 20th centuries, and from COLM specifically within a few decades of the monument?s founding. The direct urban interface of COLM with Colorado?s Grand Valley provides unique management concerns for fossils and other resources of the monument. While COLM preserves a long geologic history (roughly 1.7 billion years ago to the present), the fossils preserved at the monument mostly come from sedimentary rocks of the Mesozoic Era. The paleontological resources of COLM include both body fossils and trace fossils of a wide variety of organisms (e.g., freshwater mussels, dinosaurs, plants) representing diverse paleoenvironments. In order to assess the paleontological resources of COLM, a field inventory was conducted from April to November 2023, visiting all previously reported fossil sites and documenting new localities. A total of 226 paleontological localities were verified during this fieldwork, of which nearly two-thirds (146 sites) were newly documented. Two more were discovered in March 2024. These 228 localities are distributed throughout much of the monument and many of the geologic units, with higher concentrations present in certain units (e.g., the Morrison Formation). Fieldwork was supplemented by the review of published and gray literature and assessment of COLM paleontological collections. A number of significant paleontological discoveries were made during this inventory, including the first documented fossils (dinosaur tracks, plant fossils, and dinosaur skin) from the Naturita Formation within COLM and multiple novel fossil occurrences (e.g., likely the oldest-known fish otoliths in North America and possibly one of the only Jurassic ankylosaur tracks known globally). When considered alongside previously identified significant fossil finds from COLM (e.g., one of only three known turtle tracksites in the Morrison Formation and potentially one of the only known lizard trackways in the same unit), the paleontological resources of the monument are of high scientific importance. Future research on the paleontological resources of COLM has a high potential for identifying important fossil specimens and/or describing new species. This report provides foundational data on the scope, significance, and distribution of paleontological resources at COLM and provides recommendations to support the management, interpretation, and research of these resources.
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Noga, Edward J., Angelo Colorni, Michael G. Levy, and Ramy Avtalion. Importance of Endobiotics in Defense against Protozoan Ectoparasites of Fish. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586463.bard.
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Infectious disease is one of the most serious causes of economic loss in all sectors of aquaculture. There is a critical need to understand the molecular basis for protection against infectious disease so that safer, more reliable and more cost-effective strategies can be designed for their control. As part of this effort, the major goal of our BARD project was to determine the importance of endobiotics as a defense against protozoan ectoparasites in fish. Endobiotics, or antimicrobial polypeptides, are peptides and small proteins that are increasingly recognized as having a vital role in the innate defense of virtually all animals. One objective of our BARD project was to determine the antiparasitic potency of one specific group of endobiotics that were isolated from hybrid striped bass (Morone saxatilis x M chrysops). We found that these endobiotics, which we had previously named histone-like proteins (HLPs), exhibited potent activity against Amyloodinium and that the putative levels of HLPs in the skin were well within the levels that we found to be lethal to the parasite in vitro. We also found evidence for the presence of similar antibiotics in sea bream (Sparus aurata) and Mediterranean sea bass (Dicentrarchus labrax). We also examined the effect of chronic stress on the expression of HLP in fish and found that HLP levels were dramatically decreased after only one week of a crowding/high ammonia sublethal stress. We also began to explore the feasibility of upregulating endobiotics via immunostimulation. However, we did not pursue this objective as fully as we originally intended because we spent a much larger effort than originally anticipated on the last objective, the attempted isolation of novel endobiotics from hybrid striped bass. In this regard, we purified and identified four new peptide endobiotics. These endobiotics, which we have named piscidins (from "Pisces" meaning fish), have potent, broad-spectrum activity against a number of both fish and human pathogens. This includes not only parasites but also bacteria. We also demonstrated that these peptides are present in the mast cell. This was the first time that the mast cell, the most common tissue granulocyte in vertebrates, was shown to possess any type of endobiotic. This finding has important implications in explaining the possible function of mast cells in the immune response of vertebrates. In summary, the research we have accomplished in this BARD project has demonstrated that endobiotics in fish have potent activity against many serious pathogens in aquaculture and that there is considerable potential to use these compounds as stress indicators in aquaculture. There is also considerable potential to use some of these compounds in other areas of medicine, including treatment of serious infectious diseases of humans and animals.
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MECHANICAL PROPERTIES OF ASSEMBLED WALL-SLAB JOINTS BETWEEN THIN DOUBLE SKIN COMPOSITE SHEAR WALLS AND PRECAST FLOOR SLABS SUBJECTED TO PURE BENDING. The Hong Kong Institute of Steel Construction, 2024. https://doi.org/10.18057/ijasc.2024.20.4.4.
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Two new types of assembled wall-slab joints are proposed for thin double skin composite shear walls and steel truss floor slabs, which are commonly used in construction. Pure bending tests were performed to investigate the failure modes and mechanical performance of these newly devised wall-slab joints. The results demonstrated that the new assembled wall-slab joints offer superior flexural bearing capacity and ductility. When subjected to pure bending load, the steel truss floor slabs failed before the joints, adhering to the design principle of “strong joints and weak members”. Finite element models for the new assembled wall-slab joints were established and compared with test results. Furthermore, recognizing the prefabricated floor slab's failure section as the weakest, a new formula to calculate the bending capacity of these wall-slab joints was proposed, based on the principle of sectional force balance. Notably, these calculated results were more conservative than the test results.