Results 61 to 70 of about 169,014 (352)

Biogeochemical Changes During Bio-cementation Mediated by Stimulated and Augmented Ureolytic Microorganisms. [PDF]

, 2019
Microbially Induced Calcite Precipitation (MICP) is a bio-mediated cementation process that can improve the engineering properties of granular soils through the precipitation of calcite.
DeJong, Jason T, Gomez, Michael G, Graddy, Charles MR, Nelson, Douglas C   +3 more
core  

High‐Order Nonlinear Photonic Crystal with Ordered Structures for Giant Enhancement of Frequency Tripling

Advanced Science, EarlyView.
A meta‐YAG crystal with artificially order/disorder structures was fabricated to realize the efficient third‐harmonic generation at 343 nm with a conversion efficiency of 4.5×10−3, surpassing six orders of magnitude compared to bulk YAG crystal. Moreover, a wide spectral tunability from 331 to 356 nm was also achieved in the meta‐YAG, indicating its ...
Xiaotian Guo, Qiaoling Han, Fei Liang, Bin Zhang, Dazhi Lu, Haohai Yu, Huaijin Zhang   +6 more
wiley   +1 more source

Influence of cell cycle phase on calcification in the coccolithophore Emiliania huxleyi [PDF]

, 2008
Calcification of the cosmopolitan coccolithophore species Emiliania huxleyi was investigated in relation to the cell division cycle with the use of batch cultures.
Antia, Avan, LaRoche, Julie, Müller, Marius   +2 more
core   +1 more source

Calcium Carbonate Pendants as a Record of Climate Change in Semiarid Soils of Rashkan Region, Urmia, Iran

Почвознание, агрохимия и екология, 2010
Accumulation of secondary calcium carbonates in arid and semiarid regions is а valuable tool in evaluating thе degree of soil evolution, soil age, paleoenvironmental reconstruction, soil classification and land use.
SHAHRAM МАNAFI
doaj  

3D Chitin Scaffolds of Marine Demosponge Origin for Biomimetic Mollusk Hemolymph-Associated Biomineralization Ex-Vivo

Marine Drugs, 2020
Structure-based tissue engineering requires large-scale 3D cell/tissue manufacture technologies, to produce biologically active scaffolds. Special attention is currently paid to naturally pre-designed scaffolds found in skeletons of marine sponges, which
Marcin Wysokowski, Tomasz Machałowski, Iaroslav Petrenko, Christian Schimpf, David Rafaja, Roberta Galli, Jerzy Ziętek, Snežana Pantović, Alona Voronkina, Valentine Kovalchuk, Viatcheslav N. Ivanenko, Bert W. Hoeksema, Cristina Diaz, Yuliya Khrunyk, Allison L. Stelling, Marco Giovine, Teofil Jesionowski, Hermann Ehrlich   +17 more
doaj   +1 more source

Effect of Fe3+ on Flotation Separation of Fluorite and Calcite in Sodium Silicate System

Kuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. Fluorite and calcite are calcium-bearing minerals with similar physical and chemical properties.
Jiangfeng Ning, Hanbing Xu, Liang Geng, Jianhong Zeng, Wei Yao, Hao Sun   +5 more
doaj   +1 more source

The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]

, 2019
The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto, Cingolani, Carlos Alberto, Etcheverry, Ricardo Oscar, Lajoinie, Maria Florencia, Lanfranchini, Mabel Elena, Recio, C., Sial, A.N.   +6 more
core   +1 more source

The Effect of Demineralization on Coal Functional Group Pyrolysis: Rank‐Dependent Dual Mechanisms of Structural Reorganization and Mineral Catalysis

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal pyrolysis, as a key thermochemical conversion process, is significantly influenced by inherent minerals, yet their role across different coal ranks remains inadequately understood. This study investigates the effect of acid‐washing (demineralization) on the thermal decomposition of six functional groups (aliphatic C–H, aromatic C–H/C=C, C=
Zhiyuan Niu, Guijian Liu, Hao Yin, Yang Song, Aifang Ding   +4 more
wiley   +1 more source

Sustainable Graphene Oxide–Intercalated Bentonite Composite for the Effective Removal of Imidacloprid From Water: Adsorption Performance, Isotherm, and Kinetics

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Water is a fundamental necessity for our existence, but its rapid contamination is causing devastating effects on the environment and health of living species worldwide. Adsorptive removal of pollutants is one of the popular water treatment techniques because of its simplicity, affordability, and the broad range of available adsorbents.
Priyanka Negi, Brij Bhushan, Arunima Nayak, Pallavi Singh   +3 more
wiley   +1 more source

Assessment of the Composition Effect of a Bio-Cementation Solution on the Efficiency of Microbially Induced Calcite Precipitation Processes in Loose Sandy Soil [PDF]

, 2023
Joanna Fronczyk, Nadella Marchelina, Adam Pyzik, Małgorzata Franus   +3 more
openalex   +1 more source