Results 41 to 50 of about 356,037 (289)

Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia [PDF]

, 2015
The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. Ore minerals occur in veins and
Alfonso Abella, María Pura, Canet Miquel, Carles, García-Vallès, Maite, Jiménez-Franco, Abigail, Trujillo, Juan Elvys   +4 more
core  

High-severity wildfire leads to multi-decadal impacts on soil biogeochemistry in mixed-conifer forests. [PDF]

, 2020
During the past century, systematic wildfire suppression has decreased fire frequency and increased fire severity in the western United States of America.
Bell C. W., Dillon G. K., Fox J., Johnson D. W., Parker K. W., R Development Core Team, Restaino C. R., Sun H.   +7 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

The mineralization of commercial organic fertilizers at 8°C temperature [PDF]

, 2008
In organic production only organic fertilizers and soil conditioners can be used to supply the soil with nitrogen. The mineralization of these products is slow and so there can be problems with the supply of nitrogen, when the demand of the plants is ...
Andreaus, O., Burger, R., Kelderer, M., Schiatti, P., Thalheimer, M., Topp, A.   +5 more
core  

The contribution of mineralization to grassland N uptake on peatland soils with anthropogenic A horizons [PDF]

Peatland soils contain large amounts of nitrogen (N) in the soil and mineralization can contribute substantially to the annual mineral N supply of grasslands. We investigated the contribution of N mineralization from peat with respect to the total annual
Lantinga, E.A., Sonneveld, M.P.W.
core   +3 more sources

Bmp induces osteoblast differentiation through both Smad4 and mTORC1 signaling [PDF]

, 2017
The bone morphogenetic protein (Bmp) family of secreted molecules has been extensively studied in the context of osteoblast differentiation. However, the intracellular signaling cascades that mediate the osteoblastogenic function of Bmp have not been ...
Karner, Courtney M, Lee, Seung-Yon, Long, Fanxin   +2 more
core   +2 more sources

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Accurate Boron Determination in Tourmaline by Inductively Coupled Plasma Mass Spectrometry: An Insight into the Boron–Mannitol Complex-Based Wet Acid Digestion Method

Molecules
Tourmaline, a boron-bearing mineral, has been extensively applied as a geothermometer, provenance indicator, and fluid-composition recorder in geological studies. In this paper, the decomposition capability of an HF-HNO3–mannitol mixture for a tourmaline
Xijuan Tan, Yonggang Feng, Ruili Zhou, Denghong Wang, Ting Liang, Yan Wang   +5 more
doaj   +1 more source

Biomineralization of Carbonate Minerals Induced by The Moderate Halophile Staphylococcus Warneri YXY2

Crystals, 2020
Although biomineralization of minerals induced by microorganisms has been widely reported, the mechanisms of biomineralization and the characteristics of the biominerals precipitated needs to be studied further. In this study, Staphylococcus warneri YXY2,
Yu Han, Bin Sun, Huaxiao Yan, Maurice E. Tucker, Yanhong Zhao, Jingxuan Zhou, Yifan Zhao, Hui Zhao   +7 more
doaj   +1 more source

High Mg/Ca Molar Ratios Promote Protodolomite Precipitation Induced by the Extreme Halophilic Bacterium Vibrio harveyi QPL2

Frontiers in Microbiology, 2022
Bacterial activities have been demonstrated as critical for protodolomite precipitation in specific aqueous conditions, whereas the relationship between the various hydrochemical factors and bacterial activity has not been fully explored.
Zuozhen Han, Zuozhen Han, Peilin Qi, Yanyang Zhao, Na Guo, Huaxiao Yan, Maurice E. Tucker, Maurice E. Tucker, Dan Li, Jiajia Wang, Hui Zhao   +10 more
doaj   +1 more source