Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę ""zinc"" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 22
Tytuł:
Response of Lepidium sativum to soil contamination with zinc in molecular and nanoparticle form
Autorzy:
Mielcarz-Skalska, Lidia
Smolińska, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1158279.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Lepidium sativum
fitotoxicity
nanoparticles
zinc
zinc-soil contamination
Opis:
Increasingly frequent use of zinc nanoparticles in everyday life increases the concentration of this element in the environment. At the same time, research into the influence of zinc nanoparticles on living organisms is still lacking. The aim of this experiment was to investigate the effects of zinc oxide in molecular and nanoparticle form on Lepidium sativum. Studies have shown that the influence of zinc on growth and physiological features of Lepidium sativum depended on the form and the concentration of this metal in the soil. All of the analyzed zinc forms have activated the enzymatic antioxidant system of the plant, which demonstrates its sensitivity to soil contaminants.
Źródło:
World Scientific News; 2018, 114; 55-67
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth and boichemical contents of Cowpea (Vigna unguiculata L.) on the application of zinc
Autorzy:
Ganesh, K. Sankar
Selvaraju, M.
Powiązania:
https://bibliotekanauki.pl/articles/1193969.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cowpea
Vigna unguiculata
Zinc
micronutrients
Opis:
The present investigation deals with the effect of zinc on the morphological and biochemical parameters of Cowpea (Vigna unguiculata L) under laboratory condition. The Cowpea plants are grown in petriplates lined with filter paper treated with various concentrations (control, 10, 25, 50, 75, 100, 150 and 200 ppm) of zinc. The experiments were replicated five times. The various morphological parameters such as germination percentage, shoot length, root length, root nodules, total leaf area, fresh weight and dry weight of the plants were measured. Similarly the biochemical contents such as chlorophyll, carotenoid, protein and Sugar was analyzed. The results indicated that the various morphological and biochemical parameters increased up to 50 ppm and decreased at high levels of zinc.
Źródło:
World Scientific News; 2015, 16; 53-63
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review on Multi-dimensional Zinc Oxide Nanostructures
Autorzy:
Acharyya, Sarani
Acharyya, Swarnali
Samanta, Pijus Kanti
Powiązania:
https://bibliotekanauki.pl/articles/1031833.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Band-gap
Morphology
Semiconductor
Zinc Oxide
Opis:
Nanostructured materials are being widely investigated due to their versatile properties leading to promising applications in various areas starting from electronics to environment and medical science. Amongst the various investigated nanostructures, Zinc Oxide (ZnO) is very important because of its versatile properties like high and direct band gap, optical transparency, room temperature ferromagnetism, piezoelectric property and gas sensing property. This mini review article is focused on the morphological study of various ZnO nanostructures starting from hierarchical nanostructures to quantum dots.
Źródło:
World Scientific News; 2020, 147; 140-165
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biogenic production of zinc oxide nanoparticles from aqueous extracts of Duranta erecta L.
Autorzy:
Ravindran, C. P.
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1193011.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bioreduction
Characterization
Duranta erecta
Zinc oxide nanoparticles
Opis:
The present communication reports the biosynthesis of zinc oxide nanoparticles using aqueous extracts of leaves, stem, root, flowers and fruits of Duranta erecta L. This plant gains horticultural and medicinal importance due to its various biological activities. Zinc Nitrate Hexahydrate [Zn (NO3)2•6H2O] solution was used as a precursor to synthesize Zinc oxide nanoparticles. The various plant (leaves, stem, roots, flowers, fruits) extracts played as reducing agents. The leaf extract showed strong absorbance peak at 302 nm, stem and flower peaks were located at 299 nm, roots at 293 nm and fruit extract solution peak observed at 317 nm.
Źródło:
World Scientific News; 2016, 28; 18-28
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant extract as biodegradable inhibitor for zinc in dilute solution of sulphuric acid
Autorzy:
Onukwuli, O. D.
Ezeugo, J. O.
Powiązania:
https://bibliotekanauki.pl/articles/1163555.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Picralima nitida leaf
Zinc
corrosion
inhibition
inhibitor
Opis:
The inhibitive action of the ethanol extract of oil from Picralima nitida leaf, towards acid corrosion of zinc, is tested using weight loss, and thermometry methods. It was found that the extract acted as a good corrosion inhibitor for zinc corrosion in 0.5 M H2SO4 solution. The inhibitive action of the extract was discussed in view of Langmuir adsorption isotherm. It was revealed that the adsorption of the extract on zinc surface is governed by spontaneous process. The inhibition efficiency (IE) increases in line with corresponding increase in extract concentration. The temperature effect of the corrosion inhibition on the IE was studied. Revelation from the studies indicates that the presence of extract increases the activation energy of the corrosion reaction. Furthermore, from the calculated thermodynamic parameters, it was observed that Picralima nitida extract provides a good protection to zinc against pitting corrosion in chloride ion containing solutions.
Źródło:
World Scientific News; 2018, 109; 195-210
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biogenesis of Zinc Oxide Nanoparticles using Couroupita guianensis Aubl. Extracts - A Green Approach
Autorzy:
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1193027.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Couroupita guianensis
Zinc oxide nanoparticles
aqueous extracts
characterization
Opis:
Zinc oxide nanoparticles (ZnO NPs) were synthesized by the green synthesis methods using aqueous extracts of Couroupita guianensis Aubl. This is an eco-friendly, time conservative and cost effective way of nanoparticle production. The aqueous extracts of leaves, stem, flower petals and bark were used to synthesize the nanoparticles. Zinc Nitrate hexahydrate (Zn (NO3)2•6H2O) was used as a precursor material. The prepared Zinc oxide nanoparticles were characterized using UV-Vis spectrophotometric analysis. The wavelength specific UV-Vis absorption peaks for Zinc oxide nanoparticles were recorded between 290 nm to 302 nm which confirmed the presence of Zinc oxide in nano scale. The reaction mixture with aqueous extract of leaf showed maximum absorbance spectral peak at 302 nm, stem at 294 nm, flower petals at 292 nm and bark at 288 nm. This is the first report to explore the use of Couroupita guianensis for the biogenic production of Zinc oxide nanoparticles to meet the demand of the pharmaceutical, medicinal and environmental industries.
Źródło:
World Scientific News; 2016, 29; 86-95
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesized and characterization of pure and Er+3 doped ZnO nanoparticles by using laser ablation in ethanol
Autorzy:
Ismail, Raid A.
Habubi, Nadir F.
Powiązania:
https://bibliotekanauki.pl/articles/1191374.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
AFM
Er doping
Heterojunction
XRD
Zinc Oxide
nanocollidal suspension
Opis:
Pulsed laser ablation in ethanol at room temperature with laser fluence 4.62 J/cm2 was employed to synthesize pure zinc oxide (ZnO) and Er- doped ZnO nanocolloidal suspension. The structural properties were determined by using x-ray diffraction (XRD) method and was confirmed its hexagonal wurtzite structure. The photoluminescence spectra (PL), AFM and FTIR measurement of the synthesized pure and Er-doped ZnO is carried out. The photoluminescence spectra measurements show that all the samples have ultraviolet emission and green emission and the surface granular morphology. The FTIR spectra indicate the existence of Zn-O, Er-O-Er and Er-O stretching modes. Al/ZnO/P-Si/Al and Al/Er-ZnO/P-Si/Al photodetectors hetrojunction has two peaks of response located at 650 nm for and 790 nm and the first peak shifted to 550nm for the doped hetrojunction with max sensitivity 0.7A/W. The maximum specific detectivity is 4.3×1012 W-1•cm•Hz-1 and 3×1012 W-1 •cm•Hz-1 for undoped and doped hetrojunctions respectively. The values of the built-in potentials 0.9 volt for Al/ZnO/P-Si/Al heterojunction and 0.6 volt for Al/Er-ZnO/P-Si/Al hetrojunction.
Źródło:
World Scientific News; 2016, 33; 67-78
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of Crotalaria verrucosa L. extracts in synthesis of Zinc oxide nanoparticles
Autorzy:
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1182882.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
crotalaria verrucosa
zinc nitrate
broth solutions
surface plasmon resonance
Opis:
Green synthesis of metal (zinc) oxide nanoparticles is a fascinating subject in the field of nanobiotechnology. Nanoparticles using green plants are suitable for large scale biosynthesis at room temperature with affordable price and eco-friendly nature. The stable nanoparticles were synthesized using leaves, stem, roots, flowers, immature and mature seeds extracts of Crotalaria verrucosa. Zinc Nitrate hexahydrate [Zn(NO3)2•6H2O] was used as precursor material in this experiment. The formation of nanoparticles was monitored by visual color changes and UV-Visible spectrophotometric analysis. UV-Visible absorption peaks between 299-317 nm confirmed the presence of ZnO at nano-scale. The present technique confirmed that this plant species could be explored in the field of nanotechnology for human welfare.
Źródło:
World Scientific News; 2016, 53, 3; 230-240
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of Zinc oxide nanoparticles from Clitoria ternatea L. extracts: a green approach
Autorzy:
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1189980.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biogenesis
Zinc oxide nanoparticles
Clitoria ternatea
UV-Visible characterization
Opis:
We report the development of green methods for synthesis of zinc oxide at nano scale. Biological systems are being explored for the synthesis of nanoparticles. The plant Clitoria ternatea contains alkaloids, tannins, glycosides, resins, steroids, saponins, flavonoids, phenols, kaempferol, clitorin, taraxerol, aparajitin, sistosterol, hexacosanal and anthoxanthin. The whole plant is traditionally used to treat leprosy, bronchitis, inflammation, leucoderma and tuberculosis. The present report describes the biosynthesis and characterization of zinc oxide nanoparticles using aqueous extracts of leaves, stem, root, flowers and fruits of Clitoria ternatea. The aqueous reaction mixture of leaf, flower petals and roots showed strong broad UV spectral peak at 296 nm, stem at 293 nm and roots at 311 nm.
Źródło:
World Scientific News; 2016, 52; 216-227
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecofriendly synthesis of Zinc oxide nanoparticles from asthma plant - Euphorbia hirta L.
Autorzy:
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1182444.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Absorption spectrum
Euphorbia hirta
Reaction mixtures
Zinc oxide nanoparticles
Opis:
The present study states about the biosynthesis and UV-Visible characterization of Zinc oxide (ZnO) nanoparticles using leaf, stem, roots and inflorescence of the medicinal herb Euphorbia hirta. The aqueous extracts of plant parts were acted as capping and reducing agent while Zinc Nitrate Hexahydrate used as precursor. One milliliter of plant extracts mediated the formation of ZnO nanoparticles in solution which were visually confirmed by the development of yellowish color in the reaction mixtures. The optical properties of the reaction mixtures were analyzed by the UV-Visible double beam spectrophotometer. The leaf reaction mixture showed strong absorption band at 302nm, stem reaction mixture at 299nm, and the root and inflorescence reaction mixtures at 310nm. The results indicate that whole Euphorbia hirta plant can be used for the biosynthesis of Zinc oxide nanoparticles.
Źródło:
World Scientific News; 2017, 69; 111-121
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of zinc oxide nanoparticles using aqueous extracts of a medicinal plant Micrococca mercurialis (L.) Benth.
Autorzy:
Manokari, M.
Ravindran, C. P.
Shekhawat, M. S.
Powiązania:
https://bibliotekanauki.pl/articles/1192709.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bioreduction
Micrococca mercurialis
UV-Visible spectrophotometer
Zinc oxide nanoparticles
Opis:
The synthesis of Zinc oxide (ZnO) nanoparticles using plant parts is always an attractive and eco-friendly method. The present study focuses on the production of ZnO nanoparticles from Zinc Nitrate hexahydrate (Zn (NO3)2•6H2O) using the aqueous extracts of a medicinal plant Micrococca mercurialis. The plant is found to be rich in primary and secondary metabolites such as proteins, steroids and alkaloids, which are responsible and enhancing the biogenic synthesis of ZnO nanoparticles. Leaves, stems, roots and fruits of M. mercurialis were used to prepare the aqueous extracts. The characterization and confirmation of synthesized ZnO nanoparticles was performed by UV-Visible spectrophotometer. The reaction mixtures showed significant and sharp UV absorbance peaks at 305 nm, 299 nm, 311 nm and 302 nm corresponding to the aqueous extracts of leaf, stem, root and fruits reacted with zinc nitrate respectively. It has been proved that the medicinal plant M. mercurialis can be used to synthesize ZnO nanoparticles and the biological method of synthesis of ZnO nanoparticles are safe and good alternative to the chemical and physical methods.
Źródło:
World Scientific News; 2016, 30; 117-128
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals concentration and distribution in soils around Oshiri and Ishiagu lead – zinc mining areas, southeastern Nigeria
Autorzy:
Igwe, Ezekiel Obinna
Ede, Christian Ogobuchi
Eyankware, Moses Oghenenyoreme
Powiązania:
https://bibliotekanauki.pl/articles/1193469.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Heavy metals
Lead
Mining activities
Soil pollution
Southeastern Nigeria
zinc
Opis:
The study area is characterized by ubiquitous ore deposits within the underlying Asu River Group of the southern Benue Trough of Nigeria. The extensive mineralization resulted in widespread artisan and unlawful mining activities, necessitating the need for the assessment of the effects on soils in the area. Careful evaluation of the soils was undertaken to give account of heavy metals concentrations and distribution, and pollution level in soils across the lead – zinc mines. The soil samples were digested and chemically analysed using Atomic Absorption Spectrophotometer (AAS). Results showed concentrations of heavy metals of the soil samples in the order trend Zn>Pb>Mn>Cd>Cu>Fe> Ni>Co>Cr and Pb>Zn>Mn>Fe>Cu>Cd>Ni>Cr>Co in both Oshiri and Ishiagu areas. Cd showed high contamination in the soils with higher amount of contamination occurring in Oshiri. Findings also revealed Co, Fe Cu, Mn, Zn, Pb and Ni whose Igeo’s values indicated uncontaminated to moderate contamination have an insignificant contribution to the pollution in the study area while Cd showed highest Igeo with moderate contamination. Co, Cr, Ni, Pb and Zn show deficiency to minimal enrichment while Cd recorded very high enrichment 23.95 – 37.48 and 25.66 – 34.21 mk/kg in the Oshiri and Ishiagu areas respectively. Cd showed high index of contamination ranging from 7.21 – 13.89, while other metals showed no index of contamination in the area. Pollution load index indicates that only few sites in Oshiri area require urgent rectification measures. The food chain in the area is not safe due to possible biomagnifications; hence arable soil around the mines is not suitable for production of food crops.
Źródło:
World Scientific News; 2021, 158; 22-58
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zinc oxide nanoparticles synthesis from Moringa oleifera Lam. Extracts and their characterization
Autorzy:
Manokari, M.
Shekhawat, Mahipal S.
Powiązania:
https://bibliotekanauki.pl/articles/1192606.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Zinc oxide nanoparticles
Moringa oleifera
UV-Visible spectroscopy
Reaction medium
Opis:
The enormous applications of metal nanoparticles urged to find new biologically hazard free methods for huge synthesis. The green synthesis approaches are acknowledged by many scientists due to its cost effective, simple, eco-friendly and resourceful move. The present investigation deals with the bio-production and characterization of zinc oxide (ZnO) nanoparticles using leaf, stem, flowers and fruit pods of the medicinal plant Moringa oleifera. The synthesis of ZnO nanoparticles from the aqueous extracts were mediated by Zinc Nitate Hexahydrate as precursor. Various parameters like time periods, concentration of plant extracts and different temperatures were influenced the synthesis of ZnO nanoparticles. The stability and reduction of zinc ions to ZnO nanoparticles were characterized by UV-Visible spectroscopic analysis. The reaction medium from the leaves and flowers showed strong absorption at 308nm. The stem and fruit pods reaction medium existed absorption peak at 293nm.
Źródło:
World Scientific News; 2016, 55; 252-262
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of heavy metals on living organisms
Autorzy:
Draszawka – Bołzan, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1194070.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
heavy metals
soil
iron
zinc
copper
manganese
cobalt
mercury
lead
cadmium
Opis:
The rapid development of technology and the changes that are occurring in the world today largely affect on the environment. One of the primary sources of pollution of the biosphere are industrial plants, which emit both gaseous substances (eg. Carbon monoxide, sulfur and nitrogen) and dust, containing all sorts of toxic substances. For the serious consequences of the development of civilization and industry should be spread include heavy metals. Included in the atmosphere, dust and heavy metals fall to the ground parts of plants and enters the soil. Shall be collected by the roots of plants or animals grazing on the roads and thus incorporated into the food chain. These elements are not biodegradable. They are indestructible and indelible. Once released into the environment continuously circulate therein, changing, at most its shape. Heavy metals are ubiquitous and can be detected in every organic material and in every living organism. They are a particular threat to humans.
Źródło:
World Scientific News; 2014, 5; 12-20
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in Biochemical Variations of Sesuvium portulacastrum under Copper and Zinc Treatment
Autorzy:
Kalaikandhan, R.
Vijayarengen, P.
Mathivanan, S.
Powiązania:
https://bibliotekanauki.pl/articles/1157313.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Amino acid
Copper
Proline
Protein
Sesuvium portulacasrtum
Total Sugar and Starch
Zinc
Opis:
The present work deals with the ecophysiological studies on the biochemical contents of the effect of copper and zinc on Sesuvium portulacastrum L. The Sesuvium portulacastrum plant are grown in pots in a spilt plot design with copper and zinc concentration levels as main treatments (control, 100, 200, 300, 400, 500 and 600 mg/kg-1). The experiments were replicated five times. The Sesuvium portulacastrum plants are raised in pots. The copper and zinc were mixed with (1:2) the sand and applied to the pot soil (10 kg /acre). The two heavy metals copper and zinc were applied in the soil mixed. Pots were irrigated as and when necessary. The plant samples were analyzed at four different intervals (30, 60, 90 and 120th DAS). The results indicates that the heavy metals (copper and zinc) application, at the six rates (100, 200, 300, 400, 500 and 600 mg kg-1) caused reduction in various biochemical contents such as (Amino acid, Proline, Protein, Total sugar and Starch) when applied copper and zinc. Increasing in various bio chemical contents such as (Amino acid, Proline, Protein, Total Sugar and Starch) copper 200 mg kg-1, zinc 300 mg kg-1 only increased low concentration and higher concentration is decreased the all biochemical contents Sesuvium portulacastrum.
Źródło:
World Scientific News; 2018, 92, 2; 139-154
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies