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Hair as a bioindicator of contamination of risk metals
Zmijová, Marie ; Řezáčová, Veronika (referee) ; Zlámalová Gargošová, Helena (advisor)
The use of hair as a bioindicator of environmental contamination by risk elements is becoming more and more common. This bachelor thesis deals with the use of this matrix for analysis using the voltammetric method. It focuses on the optimization of the method for determining the concentration of cadmium, copper, lead and zinc in real hair samples and monitors the effects on the incorporation of these elements into the hair fiber. The presence of zinc and copper was confirmed in all samples analyzed. Cadmium could only be quantified in one sample. The effect of gender and age on the concentration of elements has not been demonstrated. Concentration of lead has been linked to smoking, with higher concentrations found in smoker’s hair than in non-smoker’s.
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Design of women epilator
Sakalová, Michaela ; Buganská, Tamara (referee) ; Tomášková, Veronika (advisor)
My bachelor´s thesis is divided into two parts. I devote myself to present condition of knowledge in my first part where is history and development of depilatory up to nowadays. There is analysis of depilation´s technique and methods IPL in detail. It follows analysis of problem and determination goal of thesis where is description of current depilatory´s style in the market. In the second part I created my own style of depilatory for women, its description in detail, and structural technical solution. The final design of depilatory is simple, pure and it is inspired by stone. Total design contains base with drive, which was designed for depilatory in order design will be match up.
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Untitled
Sláma, Matěj ; Poliačková, Martina (referee) ; Mazanec, Martin (advisor)
The subject of the bachelor's thesis is hair as a phenomenon, image, trauma, when in detail I explore this biological material on the basis of personal experience and as part of a series of experiments in the created "hair laboratory". Thematically, I focus on different concepts of hairstyle -- image vs. examine of biological glitches of hair growth. I organize a set of records, drawings, post-productions, objects or found materials into a database, which also became the inspiration for the actual installation of the project.
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In Silence
Richterová, Nela ; Kleinerová, Klára (referee) ; Kohoutková, Karolína (advisor)
In bachelor's work i apply hairy woman and man body. I look for a hairy locations on man's body, which are symbol of masculinity like chest, navel and chin. I work with same locations on a woman's body. I latex cast them and then I let them be overgrown by hair. Accessories were made for woman's wardrobe, which don't hide the unwanted sprouting hair, but flaunt them and underline woman's beauty.
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Evolution of hair in great apes and humans
Vejmělková, Anna ; Hora, Martin (advisor) ; Jarešová, Pavla Alexia (referee)
Humans are distinguished from other primates by their functionally naked body surface, caused by reduced body hair density and the type of hair called vellus, with which humans are predominantly covered. This type of hair represents fine and poorly pigmented hair, which, unlike terminal hair, is hardly visible. However, a reduced hair density can also be observed in other hominids, including the genus Homo and the genera Pan, Gorilla, and Pongo. In this work, we first compare the hair density of selected body parts for different species of primates. Next, we describe the structure and functions of hair and discuss hypotheses that explain the possible circumstances leading to a gradual decrease in hair density. We mainly focus on crucial hypotheses related to bipedal locomotion, inhabiting tropical savanna areas, parasites, or the influence of sexual selection. However, we also present some other hypotheses related to the wearing of clothes or the inhabiting of the aquatic environment by our ancestors. This work aims to compare these hypotheses, present arguments for and against them, and summarize their possible effects on the current state. Keywords: human, great apes, evolution, hair
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Plants for no shampoo (no poo) hair washing
ČERVENÁ, Simona
The bachelor's thesis "Plants for no shampoo (no poo) hair washing" focuses on the composition of the Czech and Ayurvedic no-poo mixtures and analyses their botanical and ecological characteristics by individual plant species. The latter part of the thesis evaluates the respondents' experience by using a quantitative research method - a survey. The domestic market includes 15 no-poo mixtures from 49 plant species, from which 34 were Czech and 15 were Ayurvedic. The most used plant species for hair washing on the Czech market were these Ayurvedic species: Acacia concinna, Emblica officinalis, Sapindus mukorossi, Aloe barbadensis, Trigonella foenum-graecum, Eclipta prostrata. The Czech plant species include: Glycyrrhiza glabra, Arctium lappa, Althaea officinalis, Urtica dioica, Saponaria officinalis, Achillea millefolium.Those plant species are taxonomically varied, with differing habitat areas, biotope preferences and life forms. They are appropriate for hair care, solving problems regarding hair care and are ecologically sustainable.
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Determination of Mercury in Hair by Atomic Fluorescence Spectrometry
Šandlová, Petra ; Červený, Václav (advisor) ; Hraníček, Jakub (referee)
The functionality of PS Analytical's Millenium Merlin Satellite external module to the PSA Millenium Excalibur atomic fluorescence spectrometer has been demonstrated on real samples. Hair was selected as real samples. In the first part, several extraction procedures were tested to obtain the highest response. The best results were obtained by the extraction method with TMAH and HCl in FIA-UV-PVG- AFS mode. In the next part, an attempt was made to optimize the conditions for the separation of mercury speciation, namely Hg2+ and MetHg. The optimized parameters were: the percentage of organic component in the mobile phase, the pH of the mobile phase, the flow rate of the added mobile phase per column, and the flow rate of the added 0.050M HCl per column. After this stage, 3 more extraction procedures were tested: extraction using L-cysteine with HCl, extraction using PDTC and extraction using DEDTC. However, none of the extraction procedures was better than the extraction method with TMAH and HCl. Despite the optimization of the method, the speciation of Hg in the hair samples failed because the chromatograms obtained did not match (even in retention times) those obtained for the mixture of standards with the mobile phase extraction reagents. Subsequently, the conditions for the determination of total...
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Generování vlasů interpolací
Šik, Martin ; Křivánek, Jaroslav (advisor) ; Kolomazník, Jan (referee)
This thesis describes a procedural hair generator that is able to generate hair from just a few hairs, called hair guides, which are directly modeled by a 3d artist. The procedural hair generator is a part of Stubble project -- a tool for hair modeling in Autodesk Maya. The procedural hair generator can generate hair during rendering, thus avoiding storage of hair geometry in a scene file, which makes the rendering process very efficient. Furthermore, hair can be generated interactively and displayed by OpenGL during modeling in Maya. Generated hair geometry is mainly defined by interpolation from the mentioned hair guides; however it is also influenced by many hair properties. These properties can change hair geometry using noise functions, define hair color, width and more. To determine hair root positions on a given triangular mesh I use my own mesh sampling algorithm that generates random samples on a triangular mesh according to a density defined by a 2-dimensional texture. My sampling algorithm uses an innovative way of sampling from a discrete probability distribution, which can be used in other applications than mesh sampling.
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Use of stable isotopes in hair for understanding nutrition and population migration
Tomášková, Anežka ; Brůžek, Jaroslav (advisor) ; Kovačiková, Lenka (referee)
The analysis of stable isotopes of teeth and bones shines a new light on bioarcheology, understanding of nutrition as well as mobility of mankind in past. However studying stable isotopes which can be found in animal or human hair (carbon - δ13 C, nitrogen - δ15 N, oxygen - δ18 O and probably more) provide information of the same quality. This kind of information is not enriching only to bioarcheology, but also to other fields connected to antropology such as forensic science or medicine. This paper delivers basic overview of principles of determinig the content of stable isotopes in biological material and show advantages and disadvantages of using hair. Information which are used for further understanding of nutrition, mobility and geo-origins are demonstrated on examples from bioarcheology, forensic and clinical medicine.
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Realistic hair rendering in Autodesk Maya
Svoboda, Tomáš ; Křivánek, Jaroslav (advisor) ; Vorba, Jiří (referee)
This thesis describes a real-time hair rendering in 3D animation and modeling software Autodesk Maya. The renderer is part of the Stubble project a - Maya plug-in for hair modeling. The presented renderer provides a high-quality interactive preview that allows fast hair modeling without the need for rendering in slow off-line renderers. The goal of this work is to create a renderer that can generate images in real-time that are as close as possible to the output of the 3Delight renderer - a plug-in for Maya that is based on RenderMan standards.
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