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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term calcium carbonate Remove constraint Subject term: calcium carbonate Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. 3D structures of hydroxyapatite obtained from Rapana venosa shells using hydrothermal synthesis followed by 3D printing

Author:
Ana Maria Mocioiu; Raluca Tutuianu; Laura Madalina Cursaru; Roxana Mioara Piticescu; Paul Stanciu; Bogdan Stefan Vasile; Roxana Trusca; Viviana Sereanu; Aurelia Meghea
Source:
Journal of materials science 2019 v.54 no.22 pp. 13901-13913
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; calcium; calcium carbonate; cell viability; coasts; cytotoxicity; hydroxyapatite; in vitro studies; light scattering; powders; raw materials; scanning electron microscopy; three-dimensional printing; wastes; Black Sea
Abstract:
... In this study, hydroxyapatite (HAp) obtained by hydrothermal synthesis from natural sources (whelk shells of Rapana thomasiana) was compared to synthetic hydroxyapatite (prepared from chemical reagents) and used for 3D printing of HAp-based structures. Rapana thomasiana can be found in Romanian coast of Black Sea. The visceral part of Rapana is used for culinary purposes, but the whelk shell, main ...
DOI:
10.1007/s10853-019-03872-3

2. A BET-fajlagos felület, a humuszanyagok és további talajtulajdonságok összefüggéseinek vizsgálata jellemző hazai talajtípusokonAnalysis of correlations between BET-specific surface area, humus materials and other soil properties on typical Hungarian soil types

Author:
Sándor Molnár; Gyöngyi Barna; Eszter Draskovits; Rita Földényi; Hilda Hernádi; Zsófia Bakacsi; András Makó
Source:
Agrokémia és talajtan 2019 v.68 no.1 pp. 57-77
ISSN:
1588-2713
Subject:
calcium carbonate; clay fraction; databases; humus; models; particle size distribution; sand fraction; soil pH; soil profiles; soil taxonomy; soil types; statistical analysis; surface area
Abstract:
... In our study, we examined 27 different Hungarian soil profiles to reveal the relationship between N₂-BET specific surface area (N₂-BET SSA) and other soil physical properties. According to the univariate statistical analysis, it can be stated that the soil particle size distribution shows the closest correlation to the SSA. The clay content has a strong positive correlation with it, on the contrar ...
DOI:
10.1556/0088.2019.00039

3. A Comprehensive Study of Three Different Portable XRF Scanners to Assess the Soil Geochemistry of An Extensive Sample Dataset

Author:
Ynse Declercq; Nele Delbecque; Johan De Grave; Philippe De Smedt; Peter Finke; Abdul M. Mouazen; Said Nawar; Dimitri Vandenberghe; Marc Van Meirvenne; Ann Verdoodt
Source:
Remote Sensing 2019 v.11 no.21 pp. -
ISSN:
2072-4292
Subject:
X-ray fluorescence spectroscopy; calcium carbonate; copper; data collection; databases; geochemistry; magnesium; phosphorus; remote sensing; scanners; soil properties; sulfur
Abstract:
... The assessment of soil elemental concentrations nowadays mainly occurs through conventional laboratory analyses. However, proximal soil sensing (PSS) techniques such as X-ray fluorescence (XRF) spectrometry are proving to reduce analysis time and costs, and thus offer a worthy alternative to laboratory analyses. Moreover, XRF scanners are non-destructive and can be directly employed in the field. ...
DOI:
10.3390/rs11212490

4. A Kunitz proteinase inhibitor (HcKuPI) participated in antimicrobial process during pearl sac formation and induced the overgrowth of calcium carbonate in Hyriopsis cumingii

Author:
Can Jin; Xiao-Jun Liu; Jia-Le Li
Source:
Fish & shellfish immunology 2019 v.89 pp. 437-447
ISSN:
1050-4648
Subject:
Hyriopsis cumingii; aragonite; biomineralization; calcium carbonate; crystallization; crystals; double-stranded RNA; epithelial cells; immune system; immunology; mussels; nacre; proteinases; serine proteinase inhibitors; shell (molluscs); shellfish
Abstract:
... Proteinase inhibitors with the ability to inhibit specific proteinases are usually closely connected with the immune system. Interestingly, proteinase inhibitors are also a common ingredient in the organic matrix of mollusk shells. However, the molecular mechanism that underlies the role of proteinase inhibitors in immune system and shell mineralization is poorly known. In this study, a Kunitz ser ...
DOI:
10.1016/j.fsi.2019.04.021

5. A Novel Approach to Enhance the Urease Activity of Sporosarcina pasteurii and its Application on Microbial-Induced Calcium Carbonate Precipitation for Sand

Author:
Yang Zhao; Zhiyang Xiao; Jie Lv; Wanqing Shen; Rongchao Xu
Source:
Geomicrobiology journal 2019 v.36 no.9 pp. 819-825
ISSN:
1521-0529
Subject:
Sporosarcina pasteurii; calcium carbonate; enzyme activity; sand; urea; urease
Abstract:
... Urease is involved in the formation of carbonate sediments by microbial-induced calcium carbonate precipitation (MICP), and Sporosarcina pasteurii used extensively in this technique owing to its high urease production. In this study, a simple two-step culture method with the appropriate medium was developed to enhance the urease activity of S. pasteurii. Urea played an important role in the cultur ...
DOI:
10.1080/01490451.2019.1631911

6. A Pilot Study of an Electromagnetic Field for Control of Reverse Osmosis Membrane Fouling and Scaling During Brackish Groundwater Desalination

Author:
Wenbin Jiang; Xuesong Xu; Lu Lin; Huiyao Wang; Randall Shaw; Daniel Lucero; Pei Xu
Source:
Water 2019 v.11 no.5 pp. -
ISSN:
2073-4441
Subject:
calcium carbonate; calcium sulfate; desalination; electromagnetic field; fouling; groundwater; necropsy; pH; permeability; reverse osmosis; total dissolved solids; water hardness
Abstract:
... This study investigated the effects of an electromagnetic field (EMF) on control of membrane fouling and scaling during desalination of brackish groundwater using a pilot reverse osmosis (RO) skid. The groundwater was primarily CaSO4 type with a total dissolved solids concentration of 5850 mg/L and hardness of 2500 mg/L as CaCO3. Two EMF devices were installed in the pipeline ...
DOI:
10.3390/w11051015

7. A Simple Non-Invasive Approach toward Efficient Transdermal Drug Delivery Based on Biodegradable Particulate System

Author:
Yulia I. Svenskaya; Elina A. Genina; Bogdan V. Parakhonskiy; Ekaterina V. Lengert; Ekaterina E. Talnikova; Georgy S. Terentyuk; Sergey R. Utz; Dmitry A. Gorin; Valery V. Tuchin; Gleb B. Sukhorukov
Source:
ACS applied materials & interfaces 2019 v.11 no.19 pp. 17270-17282
ISSN:
1944-8252
Subject:
immunomodulation; surface area; skin diseases; hair follicles; drugs; ultrasonic treatment; biodegradability; crystallization; appendages; transdermal application; medicine; monitoring; resorption; bioactive compounds; calcium carbonate; rats; toxicity; topical application; excretion; absorption
Abstract:
... Transdermal administration via skin appendages enables both localized and systemic drug delivery, as well as minimizes incidental toxicity. However, the design of an appropriate effective method for clinical use remains challenging. Here, we introduce calcium carbonate-based carriers for the transdermal transportation of bioactive substances. The proposed system presents easily manufacturable biod ...
DOI:
10.1021/acsami.9b04305

8. A Systems-Based Approach to Ecosystem Services Valuation of Various Atmospheric Calcium Deposition Flows

Author:
Elena A. Mikhailova; Christopher J. Post; Mark A. Schlautman; Garth R. Groshans; Michael P. Cope; Lisha Zhang
Source:
Resources 2019 v.8 no.2 pp. -
ISSN:
2079-9276
Subject:
atmospheric deposition; calcium; calcium carbonate; commodity prices; ecological value; ecosystem services; gypsum; limestone; United States
Abstract:
... Atmospheric resources are very important for assessing ecosystem services at different administrative levels (e.g., state, region, etc.). Quantification of atmospheric calcium (Ca2+) deposition on the total basis provides incomplete information about the ecosystem services flows (both “natural” and “human-derived”), therefore lacking a systems approach to guide sustainable ...
DOI:
10.3390/resources8020066

9. A biomimetic hybrid material consisting of CaCO₃ mesoporous microspheres and an alternating copolymer for reversed-phase HPLC

Author:
Mai Mochida; Yuta Nagai; Hiroto Kumagai; Hiroaki Imai; Daniel Citterio; Yuki Hiruta
Source:
Journal of materials chemistry B 2019 v.7 no.31 pp. 4771-4777
ISSN:
2050-7518
Subject:
antidepressants; biomimetics; blood; calcium; calcium carbonate; composite polymers; electrostatic interactions; hydrophobicity; microparticles; packaging materials; porous media; quantitative analysis; reversed-phase high performance liquid chromatography
Abstract:
... We developed a biomineral-inspired hybrid material composed of CaCO₃ and an organic polymer as a column packing material for HPLC. This material combines a hierarchical mesoporous structure and the functionality of the polymer. The surface of monodispersed mesoporous CaCO₃ microspheres was modified with poly(maleic acid-alt-1-octadecene) (PMAcO) comprising hydrophobic alkyl chains and anionic carb ...
DOI:
10.1039/c9tb01014a

10. A comparative analysis of the organic and inorganic carbon content of Halimeda and Penicillus (Chlorophyta, Bryopsidales) in a coastal subtropical lagoon

Author:
Danielle Catherine Hatt; Ligia Collado-Vides
Source:
Botanica marina 2019 v.62 no.4 pp. 323-326
ISSN:
1437-4323
Subject:
Halimeda; Penicillus; algae; calcium carbonate; coastal water; inorganic carbon; sediments; Florida
Abstract:
... Standing stocks of the calcifying algae, Halimeda and Penicillus, have remained stable over the 10 years surveyed (2007–2017) in Florida Bay (USA), a subtropical lagoon. The maximum contribution of calcium carbonate (CaCO₃; 779.75 g m⁻²) was lower compared to tropical lagoons. Halimeda was more abundant and had higher inorganic:organic carbon ratios compared to Penicillus. The abundance of Penicil ...
DOI:
10.1515/bot-2018-0095

11. A comparison of filtration characterisation devices for compressible suspensions using conventional filtration theory and compressional rheology

Author:
Eric Höfgen; Sophie Kühne; Urs A. Peuker; Anthony D. Stickland
Source:
Powder technology 2019 v.346 pp. 49-56
ISSN:
0032-5910
Subject:
calcium carbonate; compressibility; dewatering; equipment; equipment performance; filtration; industry; isoelectric point; particle size; powders; rheology; van der Waals forces
Abstract:
... Solid-liquid separation is carried out in many industries and plays a crucial role in overall process efficiency and product specification. The dewatering characteristics of solid-liquid mixtures, or particulate suspensions, have to be determined to compare filtration equipment performance or to design new equipment. Two theoretical frameworks used to describe solid-liquid separation, and therefor ...
DOI:
10.1016/j.powtec.2019.01.056

12. A comparison study on heavy metal/metalloid stabilization in Maozhou River sediment by five types of amendments

Author:
Yunsong Liu; Yuanyuan Tang; Gansheng Zhong; Hui Zeng
Source:
Journal of soils and sediments 2019 v.19 no.12 pp. 3922-3933
ISSN:
1439-0108
Subject:
arsenic; calcium carbonate; calcium hydroxide; chromium; cobalt; copper; ecosystems; ferrous chloride; heavy metals; human health; kaolin; lead; manganese; manganese oxides; nickel; remediation; rivers; sediment contamination; sediments; toxicity; zeolites; zinc
Abstract:
... PURPOSE: River sediment pollution by heavy metals/metalloids has attracted widespread attention due to a serious threat to the ecosystem and human health. As an effective and economical alternative, the stabilization method was considered by previous studies for the remediation of sediments polluted by metals/metalloids. However, a comprehensive study is required for an extensive comparison on the ...
DOI:
10.1007/s11368-019-02310-w

13. A complex urban ecological investigation in a mid-sized Hungarian city – SITE assessment and monitoring of a liveable urban area, PART 1: Water quality measurement

Author:
Renáta Szita; Adrienn Horváth; Dániel Winkler; Péter Kalicz; Zoltán Gribovszki; Péter Csáki
Source:
Journal of environmental management 2019 v.247 pp. 78-87
ISSN:
0301-4797
Subject:
cadmium; calcium carbonate; cobalt; copper; fauna; floods; geomorphology; heavy metals; lead; macroinvertebrates; monitoring; nickel; nitrates; nutrient content; nutrients; pH; pollution load; sediments; streams; texture; urban areas; urbanization; water quality; zinc
Abstract:
... Urbanization and related environmental pollution have strong effects on stream systems by inducing short duration high-peak floods, raised levels of nutrients and contaminants, altered channel geomorphology, sediment dynamics, and reduced biotic richness. The main purpose of this current study is to detect stream contamination levels in a mid-sized Hungarian city by comparing the results of two se ...
DOI:
10.1016/j.jenvman.2019.06.063

14. A facile one-pot synthesis of CaO/CuO hollow microspheres featuring highly porous shells for enhanced CO₂ capture in a combined Ca–Cu looping process via a template-free synthesis approach

Author:
Jian Chen; Lunbo Duan; Tian Shi; Ruoyu Bian; Yuxiao Lu; Felix Donat; Edward J. Anthony
Source:
Journal of materials chemistry A 2019 v.7 no.37 pp. 21096-21105
ISSN:
2050-7496
Subject:
adsorption; calcium; calcium carbonate; calcium oxide; carbon dioxide; copper; coprecipitation; cupric oxide; heat production; methane; microparticles; mixing; nitrogen; oxidation; oxygen; scanning electron microscopy; synthesis; transmission electron microscopy
Abstract:
... The preparation of bifunctional CaO/CuO composites with high performance is essential for the development of the combined Ca–Cu looping process, in which the exothermic reduction of CuO with methane is used in situ to provide the heat required to calcine CaCO₃. However, the rapid decline in CO₂ uptake of CaO/CuO composites remains an important problem to be solved, despite their excellent redox ch ...
DOI:
10.1039/c9ta04513a

15. A fungal mycelium templates the growth of aragonite needles

Author:
Achiya Livne; Sylwia Carolina Mijowska; Iryna Polishchuk; Wilson Mashikoane; Alexander Katsman; Boaz Pokroy
Source:
Journal of materials chemistry B 2019 v.7 no.37 pp. 5725-5731
ISSN:
2050-7518
Subject:
aragonite; biomineralization; calcite; calcium carbonate; crystallization; fungi; mycelium; nanomaterials; sediments; soil
Abstract:
... Fungi live within diverse environments and survive well under extreme conditions that are usually beyond the tolerance of most other organisms. In different environments fungi are known to induce precipitation of a wide range of minerals. Various species of fungi have been shown to facilitate calcium carbonate mineralization. Here, inspired by examples of needle-fiber calcite formed via fungus-ind ...
DOI:
10.1039/c9tb01169b

16. A highly permeable loose nanofiltration membrane prepared via layer assembled in-situ mineralization

Author:
Jinglong Zhang; Libin Yang; Zhan Wang; Shigang Yang; Ping Li; Peng Song; Min Ban
Source:
Journal of membrane science 2019 v.587 pp. 117159
ISSN:
0376-7388
Subject:
aqueous solutions; artificial membranes; calcium carbonate; dyeing; dyes; humic acids; hydrophilicity; mineralization; nanofiltration; nanoparticles; permeability; sodium chloride; wastewater treatment
Abstract:
... Nanofiltration membrane with high water permeability and anti-fouling nature is particularly needed to be explored in dyeing wastewater treatment. Herein, a hydrophilic calcium carbonate/polyethyleneimine-gallic acid (CaCO3/PEI-GA) loose NF membrane was prepared via a layer assembled in-situ mineralization (LAIM) strategy. This strategy endowed the membrane with the following advantages: the forma ...
DOI:
10.1016/j.memsci.2019.05.083

17. A laboratory study on the hygroscopic behavior of H2C2O4-containing mixed particles

Author:
Qingxin Ma; Chang Liu; Jinzhu Ma; Biwu Chu; Hong He
Source:
Atmospheric environment 2019 v.200 pp. 34-39
ISSN:
1352-2310
Subject:
Raman spectroscopy; aerosols; ammonium; ammonium nitrate; ammonium sulfate; calcium carbonate; calcium oxalate; calcium sulfate; chemical composition; chemical reactions; hygroscopicity; mixing; oxalic acid; protons; sodium chloride; synergism
Abstract:
... The climatic effect of atmospheric particles is greatly dependent on their hygroscopicity and chemical composition. Although the hygroscopic behavior of individual components of aerosol has been widely studied, the effect of coexisting species on the hygroscopic behavior of mixed constituents is still not clear. In this study, we used Raman spectroscopy to investigate how particles with different ...
DOI:
10.1016/j.atmosenv.2018.11.056

18. A memory-based learning approach utilizing combined spectral sources and geographical proximity for improved VIS-NIR-SWIR soil properties estimation

Author:
Nikolaos Tziolas; Nikolaos Tsakiridis; Eyal Ben-Dor; John Theocharis; George Zalidis
Source:
Geoderma 2019 v.340 pp. 11-24
ISSN:
0016-7061
Subject:
algorithms; calcium carbonate; data collection; databases; decision making; electrical conductivity; geographical coordinates; infrastructure; learning; organic carbon; pH; prediction; sand; silt; soil sampling; soil texture; spectroscopy; sustainable development; Middle East; Northern Africa
Abstract:
... The current study was driven by the need to derive improved soil information whereby the strengths of memory-based learning and soil spectroscopy are exploited towards addressing regional challenges and supporting sustainable development across the Balkan, North Africa, and Middle East regions. In this study we focused on a novel derivation of the Spectrum Based Learner (SBL) algorithm by i) takin ...
DOI:
10.1016/j.geoderma.2018.12.044

19. A modeling approach for calcium carbonate precipitation in a hypersaline environment: A case study from a shallow, alkaline lake

Author:
Fereshteh Karami; Nurgul Balci; Basak Guven
Source:
Ecological complexity 2019 v.39 pp. 100774
ISSN:
1476-945X
Subject:
Anabaena; Aphanizomenon; biogeochemistry; calcite; calcium carbonate; calibration; case studies; data collection; ecosystems; environmental factors; hydrochemistry; hydrodynamics; hypersalinity; industrial applications; meteorological data; model validation; models; pH; phosphates; photosynthesis; salt lakes; temperature; water quality; Turkey (country)
Abstract:
... Carbonates are widespread occurrences in various environmental conditions. Particularly, microbial induced and/or controlled carbonate formations are considered significant archives for recording critical environmental conditions that can be used not only to reconstruct paleo-environments, but also to gain valuable information about evidence of life in environments. Therefore, deciphering carbonat ...
DOI:
10.1016/j.ecocom.2019.100774

20. A novel hay-derived biochar for removal of tetracyclines in water

Author:
Hyun Min Jang; Eunsung Kan
Source:
Bioresource technology 2019 v.274 pp. 162-172
ISSN:
0960-8524
Subject:
Cynodon dactylon; activated carbon; adsorbents; adsorption; alfalfa; biochar; calcite; calcium carbonate; cost effectiveness; cows; electrostatic interactions; grass hay; hydrogen bonding; hydroxyapatite; tetracycline; wastewater
Abstract:
... The biochars derived from alfalfa (AF) and bermudagrass (BG), the abundant grass hays to cows, were prepared, characterized and used for removal of tetracycline (TC) in water. The alfalfa-derived biochar (AF-BC) has exhibited outstanding TC adsorption capacity (372 mg/g), which was about 8-fold higher than that of bermudagrass-derived biochar (BG-BC). In addition, the TC adsorption capacity of AF- ...
DOI:
10.1016/j.biortech.2018.11.081