نتایج جستجو برای: leaf color lc

تعداد نتایج: 234118  

Journal: :Soft matter 2015
Dae-Yoon Kim Sang-A Lee Minwook Park Yu-Jin Choi Shin-Woong Kang Kwang-Un Jeong

A photochromic chiral molecule with azobenzene mesogens and a (R)-configuration naphthyl moiety (abbreviated as NCA2M) was specifically designed and synthesized for the demonstration of chameleon-like color changes responding to multitudinous external stimuli, such as temperature, light and electric field. The basic phase transition behaviors of NCA2M were first studied by the combination of di...

Journal: :Pharmaceutical biology 2011
I O Ademola J N Eloff

CONTEXT The failure of modern anthelmintics to control nematode parasites of sheep and goats is a reality on many farms in the tropical/subtropical regions of the world. This necessitates chemotherapeutic control alternatives and plant secondary metabolite with activity is one of those potential solutions. OBJECTIVE This study was design to evaluate the efficacy of solvent: solvent fractions ...

2013
M. Govindarajan M. Rajeswary R. Sivakumar

BACKGROUND & OBJECTIVES In view of the recently increased interest in developing plant origin insecticides as an alternative to chemical insecticide, this study was undertaken to assess the larvicidal and ovicidal potential of the crude hexane, benzene, chloroform, ethyl acetate and methanol solvent extracts from the medicinal plant Pithecellobium dulce against the mosquito vectors, Anopheles s...

2012
M. Sakthivadivel Alex Eapen A.P. Dash

BACKGROUND & OBJECTIVES Conventional insecticides are generally used as larvicides to control Culex quinquefasciatus, vector of lymphatic filariasis. This study was undertaken to evaluate the larvicidal activity of some potential larvicidal plants leaf extracts against Cx. quinquefasciatus larvae. METHODS The toxic effects of petroleum ether leaf extracts of plants viz., Argemone mexicana (Me...

Journal: :African journal of traditional, complementary, and alternative medicines : AJTCAM 2011
Gabriel Femi Ibikunle Adeleke Clement Adebajo Funmilayo Gladys Famuyiwa Adetunji Joseph Aladesanmi Clement Oladapo Adewunmi

Eugenia uniflora, used ethnomedically in some tropical countries as an anti-infective, has shown anti-malarial and anti-trypanocidal activities. Therefore using bioactivity guided fractionation, anti-trichomonal activity of E. uniflora leaf was investigated. Anti-trichomonal activities of leaf methanol extract and its fractions against Trichomonas gallinae as well as their cytotoxicities using ...

1999
Wonsuk Lee Stephen W. Searcy Takashi Kataoka

Nitrogen (N) is an essential element for crop growth and its accurate assessment in plants is a key to nutrient management. This research was conducted to explore the feasibility of using spectral reflectance to predict nitrogen content in corn plant varieties with varying color. A problem identified by previous researchers is the variability of spectral responses from varieties with different ...

Journal: :Journal of chromatography. A 2014
J Santos M B P P Oliveira E Ibáñez M Herrero

Ready-to-eat baby-leaf vegetables market has been growing and offering to consumers convenient, healthy and appealing products, which may contain interesting bioactive compounds. In this work, the composition and the evolution of the phenolic compounds from different baby-leaf vegetables during refrigerated storage was studied. The phenolic compounds were extracted using pressurized liquid extr...

Journal: :African journal of traditional, complementary, and alternative medicines : AJTCAM 2011
I O Ademola J N Eloff

The anthelmintic effect of acetone leaf extract and fractions of Anogeissus leiocarpus was investigated to determine the relative efficacy of the components as anthelmintic against Haemonchus contortus (Rudolphi). The fractions were obtained by solvent-solvent group separation of the leaf extract. The fractions were evaluated for ovicidal and larvicidal activity by egg hatch inhibition assay an...

Journal: :journal of agricultural science and technology 2014
v. rakonjac e. mratinić r. jovković m. fotirić akšić

in thirty-three wild cherry (prunus avium l.) accessions from central serbia, tree, leaf, fruit, and stone morphological characters were evaluated during three consecutive years. the goal was to detect relationships between the genotypes and to identify the most useful traits for discrimination among them. the study revealed a high variability in the set of the evaluated wild cherry accessions ...

2014
Xi Yang Jianwu Tang John F. Mustard

Plant phenology, a sensitive indicator of climate change, influences vegetation-atmosphere interactions by changing the carbon and water cycles from local to global scales. Camera-based phenological observations of the color changes of the vegetation canopy throughout the growing season have becomepopular in recent years. However, the linkages between camera phenological metrics and leaf bioche...

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