Search results for "hair"

Simulations on the mechanism of CNT bundle growth upon smooth and nanostructured Ni as well as θ-Al2O3 catalysts

2011

Abstract In the current study, we have performed ab initio DFT calculations on the gradually growing 2D periodic models of capped single-wall carbon nanotubes (SW CNTs) upon their perpendicular junctions with the Ni(111) substrate, in order to understand the peculiarities of the initial stage of their growth on either smooth or nanostructured catalytic particles. Appearance of the adsorbed carbon atoms upon the substrate follows from the dissociation of CVD hydrocarbon molecules, e.g., CH4: (CH4)ads → (CH)ads+3Hads and (CH)ads → Cads+Hads. (Since the effective growth of CNTs upon Ni nanoparticles occur inside the nanopores of amorphous alumina, we have also simulated analogous surface react…

Domowe sposoby farbowania włosów z wykorzystaniem surowców roślinnych

2022

Koloryzacja roślinna jest naturalną metodą farbowania włosów, która pozwala na uzyskanie różnych barw oraz dodatkowo pielęgnuje skórę głowy i włosy. Celem pracy było przybliżenie wiedzy na temat dostępnych metod farbowania z wykorzystaniem surowców roślinnych oraz zbadanie potencjału kolorystycznego wybranych ziół. Jako testowane rośliny wybrano lawsonię bezbronną, ketmię szczawiową, rzewień, bez czarny oraz rumianek pospolity. Aby ukazać wpływ procesu koloryzacji na strukturę oraz wygląd: kory, otoczki i rdzenia włosów, użyto wideodermatoskopu. Naturalną metodę farbowania włosów cechuje niższy potencjał alergizujący w stosunku do syntetycznej. Jednak biorąc pod uwagę ograniczenia kolorysty…

Antioxidation, Anti-Inflammation, and Regulation of SRD5A Gene Expression of Oryza sativa cv. Bue Bang 3 CMU Husk and Bran Extracts as Androgenetic A…

2022

Acknowledgments: The authors are grateful to the NRCT for supporting research facilities (grant no. NRCT5-RRI63004-P05), Chiang Mai University for the Fundamental Fund 2022, and the partially support grant. We would like to thank Lanna Rice Research Center, Chiang Mai University, and Saleekam Trading Co., Ltd., Thailand, for providing the rice bran and husk samples.

ELEMENTO POLIFUNZIONALE DI ARREDO

2009

Il design brevettato rientra nella categoria di arredi per strutture educative destinate a bambini di età compresa tra 1 e 3 anni. L'arredo consta di due elementi indipendenti e componibili, realizzati in cartone riciclato, che possono assumere alternativamente la configurazione di poltrona e scrittoio con seduta.

The Process of CEO Dismissal: An Exploratory study

2018

The decision to change the CEO is one of the most important decisions of the Board of Directors in a company. This study increases understanding of the process that leads to a Board’s decision to dismiss the CEO under conditions of poor performance, and of the meaning of attributions in CEO dismissal. The role of the Chair of the Board in this process is also explored. An exploratory, empirical study concerning nine CEO dismissal processes is conducted based on open-ended interviews with seven Chairpersons of the Board. The findings shed light on the issues that impact the relationship between poor company performance and CEO dismissal. In particular, the results increase understanding of t…

Patterns of expression of trichocytic and epithelial cytokeratins in mammalian tissues

1988

Abstract Cells forming hair and nail material are characterized by the synthesis of members of a particular group of α-keratin polypeptides (trichocytic cytokeratins, “T cytokeratins”) different from epithelial cytokeratins (“E cytokeratins”). As the precursor cells to trichocytes are derived from fetal epidermal keratinocytes expressing only E cytokeratins, we have studied the patterns of expression of both T and E cytokeratins in developing human hair-and nailforming tissues of different fetal stages, by immunocyto-chemistry using antibodies specific for certain T or E cytokeratins and by two-dimensional gel electrophoresis and immunoblotting. In developing hair follicles up to the early …

DNA Sensors for the Detection of Biomolecules and Biochemical Conditions

2017

Development of the adhesive pad on climbing fig (Ficus pumila) stems from clusters of adventitious roots

2003

Vines have different climbing strategies; one type, called clinging vines, has developed a specialized structure, the adhesive pad that secretes a sticky substance that adheres to almost any substrate. In this study on the climbing fig, Ficus pumila L., we report on the developmental anatomy of clusters of adventitious roots that become transformed into this unique structure. Clustered adventitious roots in F. pumila are initiated in pairs on either side of a vascular bundle at the 2nd to 3rd internodes of young stems. After emergence through the cortex and epidermis, root hairs form, which secrete a substance that stains positively for polysaccharide and protein. The adventitious roots and…

Studies on the Fibrous Components of the Test ofCiona intestinalisLinnaeus. I. Cellulose-like Polysaccharide

1977

Chemical, histochemical and electron microscopic studies on the fibrous polysaccharide component of the test of Ciona intestinalis L. were made. The results showed cellulose-like fibres to be present in the cuticle layer and in the ground substance. Bundles of fibres varying in diameter from 80 to 600 nm interweave to form a conspicuous network. The bundle appears to be formed of flat fibres, 10–13 nm in width, while the fibre is composed of fibrils 3.5–5 nm; the rectangular cross section of fibres can be supposed. The probable role of this polysaccharide is discussed.

�ber die Wirkung von Enzyminhibitoren auf das Haarwachstum bei Ratten

1959

Eine Reihe von bekannten Enzyminhibitoren fuhren bei Ratten intradermal injiziert zum Stillstand des aktiven Haarwachstums und zu reversiblem Haarverlust. Es ist anzunehmen, das die haarbildenden Matrixzellen so geschadigt werden, das sie nicht mehr zu Mitosen befahigt sind. Durch Natriumfluorid- und Malonsaure-Injektionen wird auch die Melanogenese gestort, wie das Nachwaschen zunachst pigmentfreier Haare nahe legt.