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Observations of plants with tubular stems with possible biomimetic implications

100%

Goto M. , Wang A. , Goto H.

International Letters of Natural Sciences

2015

tom 43

Two plants having tubular stems were examined. Water lily belongs to nymphaeaceae, while butterbur belongs to asteraceae. These plants are not relatives; however both have large leaves with lacinia. Furthermore, these plants have tubular long stems. Observations of leaf surface are described. Water lily leaf has an inside layer consisting of a network polygonal structure. The leaf has three layers at the microscopic level including small transparent skin tissue, and a middle layer showing a polygonal green structure where photosynthesis can be performed. The bottom layer shows fine tubular tissues. Stomas are observed on the surface of the leaf, with transparent tissue on the top layer and the stem of the butterbur with honeycomb (polygonal) structures in the leaves and stems. Plants are of interest for technology because their remarkable functional structure may provide clues for applications in materials science. In this study, the fine structures of the two plants were observed to learn their functional structure.

Sposoby gromadzenia oraz magazynowania zasobów wodnych w klasycznej kulturze nizinnych majów (iii–ix/x wiek n.e.)

100%

Jagodziński K.

Studia Europaea Gnesnensia

2014

nr 10

31-52

Ththe Maya, Central America, water, water management, aguadas, chultunes, water lily, ancient civilisations e main task of this paper is to demonstrate how the ancient Maya solved the problem of collecting and storing water, which due to geological and hydrological conditions was in very short supply at a certain period. For this reason, the indigenous population developed a range of methods which enabled them to resolve the problem; for instance, they built reservoirs or utilised natural hollows to increase the capacity of water storage. This study aims to present their major hydrotechnological measures, which permitted normal functioning of a society in the very demanding climatic conditions.

Effect of fiber content on tensile and flexural strength of water lily fiber reinforced polyester resin composite

100%

Mesfin S. , Rengiah R. G. , Shiferaw M. , Guadie T.

Composites Theory and Practice

2023

tom R. 23, nr 3

113--117

Ethiopia has abundant invasive aquatic plants like water hyacinth and water lily. Large masses of these invasive plants have a negative impact on the country’s water bodies, specifically at Lake Tana in Ethiopia, by infesting and deteriorating water quality and reducing the quantity of water. In this research work, an attempt was made to fabricate a natural fiber reinforced composite in which water lily fiber was used as the reinforcing material in a polyester resin matrix. Chopped water lily fiber reinforced polyester resin composites were prepared by varying the fiber content - 20, 40 and 60 wt.%. Mechanical properties such as tensile strength and flexural strength were tested as per ASTM standards to evaluate the influence of the fiber contents. The experimental results show that an increase in the fiber content enhanced the mechanical properties of the water lily fiber reinforced polyester composite. It was found that the composite with 40 wt.% fiber exhibited superior strength which could be suitably used for different applications.

Invertebrate herbivores and their impact on damages of water lily [Nuphar lutea] floating leaves in a small eutrophic lake

80%

Kornijow R. , Scibior R.

Polskie Archiwum Hydrobiologii

1999

tom 46

nr 2

Epiphytic bacteria inhabiting the yellow waterlily [Nuphar luteum L.]

80%

Donderski W. , Kalwasinska A.

2002

tom 11

nr 5

Studies on the development dynamics and the physiological properties of heterotrophic bacteria growing on the surface of the yellow waterlily (Nuphar luteum L.) during the plants’ development cycle were carried out. It was stated that the number of the epiphytic bacteria is different in the examined sections of the plant. The number is higher on bottom parts of petioles and rhizomes but lower on the surface of leaf blades and petioles beneath the leaf blade. The number of the epiphytic bacteria oscillated between 0.54 x 106 and 37.85 x 106 cells per 1g of wet weight of the plant. The gram negative rods dominated among the epiphytic bacteria, the majority of which was slowly growing strains. Among the epiphytic bacteria the most numerous strains were those hydrolyzing fat, starch, and protein; the least numerous were the chitinolytic bacteria.