Results 31 to 40 of about 5,722,673 (193)

Phenotypic Expression of Diaspores Indicates Genetic Diversity in Natural Populations of Spondias tuberosa (Anacardiaceae)

Biology
The aim of this study was to assess phenotypic variation and its implications for genetic diversity in natural populations of Spondias tuberosa. Fruits were harvested from 38 mother plants from three natural populations, and the physical traits of the ...
João Henrique Constantino Sales Silva, Joyce Naiara da Silva, Caroline Marques Rodrigues, Eduardo Luã Fernandes da Silva, Luís Gustavo Alves de Almeida, Maria Karoline Ferreira Bernardo, Kaline Lígia do Nascimento, Ruth da Silva Ramos, Naysa Flávia Ferreira do Nascimento, Edna Ursulino Alves   +9 more
doaj   +1 more source

THE METHOD DEVELOPMENT OF ANALYSIS Cd, Cu, Pb AND Zn IN SEA WATER BY ABSORPTIVE STRIPPING VOLTAMMETRY (ASV) IN THE PRESENCE OF CALCON AS COMPLEXING AGENT

Indonesian Journal of Chemistry, 2012
A sensitive and selective absorptive stripping voltammetric (AdSV) method to determine Cd(II), Cu(II), Pb(II) and Zn(II) in sea water is proposed. The aim of this study was to get optimum condition for the determination of Cd(II), Cu(II), Pb(II) and Zn ...
Deswati Deswati, Hamzar Suyani, Safni Safni   +2 more
doaj   +1 more source

Accelerated crystallization and crystal-crystal transition of PB induced by PP with optimized content

Polymer Testing, 2023
Isotactic polybutene-1 (PB)/isotactic polypropylene (PP) blends, typical crystalline/crystalline polymer blends with low-melting-temperature (Tm) PB and high-Tm PP, exhibit complicated interactions between their components in both molten and solid states.
Xiangjie Yan, Yaping Ma, Yuanjin Zhao, Chenguang Liu, Huarong Nie, Aihua He   +5 more
doaj   +1 more source

A Study on Photo-Fenton Method for Simulatenous and Synergic Decreasing Concentration of Pb(II) and Cu(II) in the Solution

Jurnal Kimia Sains dan Aplikasi, 2019
To prevent an environmental pollution by hazardous heavy metals, in the present study, a simulatenous decrease of the concentration of Pb((II) and Cu(II) in the solution by photo-Fenton method has been systematically studied.
Endang Tri Wahyuni, Dewi Supraba, Sigit Raharjo, Dwi Siswanta   +3 more
doaj   +1 more source

Magical fluorescent powder and ink for instantaneous imaging of latent fingerprints (level 1–3) and anti-counterfeiting labels

Results in Chemistry
In the fingerprint research area, development of ‘old’ fingerprints (FPs) or FPs taken on porous, smooth surfaces, preservation of developed FPs and visualization of sweat pores are unsolved issues.
Sanjeev Kumar, Kulwinder Kaur, Ananay Sharma, Prabhpreet Singh   +3 more
doaj   +1 more source

Microbial Pb(ii) Precipitation: the Influence of Aqueous Zn(ii) and Cu(ii)

Chemical Engineering Transactions, 2019
The current study focused on the impact of heavy metals Zn(II) and Cu(II), regularly found in conjunction with lead in industrially polluted areas, on the Pb(II) bioprecipitation capabilities and metabolic activity of an industrially isolated microbial ...
Carla Horstmann, Hendrik Brink
doaj   +1 more source

Efficient removal of Pb(II) and Hg(II) ions from aqueous solution by amine and thiol modified activated carbon

Journal of Saudi Chemical Society, 2021
This study investigates the preparation of a novel chelating adsorbent (AT-MAC), based on the chemical modification of activated carbon (AC) derived from water hyacinth (WH) via functionalization with 2-aminothiazole chelating legend (AT), and then ...
Saadia M. Waly, A. M. El-Wakil, W. M. A. El-Maaty, F. Awad   +3 more
semanticscholar   +1 more source

Surface Complexation of Pb(II) at Oxide-Water Interfaces: III. XAFS Determination of Pb(II) and Pb(II)-Chloro Adsorption Complexes on Goethite and Alumina

Geochimica et Cosmochimica Acta, 1998
Abstract Pb(II) sorption on goethite and γ-alumina was studied in aqueous 0.1 M NaCl solutions as a function of pH (5–7), sorption density (1.2–5 μmoles/m2), and [Pb]T (0.24–4.53 mM) using XAFS (X-ray absorption fine structure) spectroscopy. At pH 7, the presence of Cl− has little effect on the Pb(II)/goethite and Pb(II)/γ-alumina adsorbate spectra ...
J.R Bargar, G.E Brown, G.A Parks
openaire   +1 more source

Research on the adsorption of melamine for Cu(II) and Pb(II)

Journal of Physics: Conference Series, 2023
Abstract Melamine contains three aromatic nitrogen atoms and three free amino groups, which have great adsorption potential for heavy metallic ions in wastewater. The sorption performances of melamine for Cu(II) and Pb(II) ( They are denoted as Cu&Pb) were studied.
Chaojian Zhang, Qianqian Duan, Tianrui Yang, Junsheng Liu   +3 more
openaire   +1 more source

Fruits and Seeds as Indicators of the Genetic Diversity of Hymenaea martiana (Fabaceae) in Northeast Brazil

Biology
Hymenaea martiana is a species native to Brazil. It has ecological value, contributes to forest restoration, and is economically important because of the use of its wood and fruits. However, it is frequently exploited.
Joyce Naiara da Silva, Guilherme Vinícius Gonçalves de Pádua, Caroline Marques Rodrigues, João Henrique Constantino Sales Silva, Cosma Layssa Santos Gomes, Marília Hortência Batista Silva Rodrigues, Maria Karoline Ferreira Bernardo, Eduardo Luã Fernandes da Silva, Luís Gustavo Alves de Almeida, Lenyneves Duarte Alvino de Araújo, Aline das Graças Souza, Naysa Flávia Ferreira do Nascimento, Edna Ursulino Alves   +12 more
doaj   +1 more source