Results 61 to 70 of about 3,037,528 (395)

Chronologies for Recent Peat Deposits Using Wiggle-matched Radiocarbon Ages: Problems with Old Carbon Contamination [PDF]

, 2005
Dating sediments which have accumulated over the last few hundred years is critical to the calibration of longer-term paleoclimate records with instrumental climate data.
Charman, D.J., Garnett, M.H.
core   +1 more source

Characteristics of C-4 photosynthesis in stems and petioles of C-3 flowering plants [PDF]

, 2002
Most plants are known as C-3 plants because the first product of photosynthetic CO2 fixation is a three-carbon compound. C-4 plants, which use an alternative pathway in which the first product is a four-carbon compound, have evolved independently many ...
A Ben Zioni, AR Ashton, AR Vuorinen, EA Kinsman, ET Nilsen, J Gerendas, J Schaaf, JA Raven, JA Raven, JC Thomas, JE Keeley, JE Keeley, JM Hibberd, JM Hibberd, JR Reinfelder, JS Pate, K Esau, M Calvin, MD Cramer, MD Cramer, MD Hatch, PD Moore, PJ Lea, RF Sage, RK Monson, RP Walker, S Rawsthorne, S Rawsthorne, S Rawsthorne, Z Gao   +29 more
core   +1 more source

A Possible Primordial Acetyleno/Carboxydotrophic Core Metabolism

Life, 2020
Carbon fixation, in addition to the evolution of metabolism, is a main requirement for the evolution of life. Here, we report a one-pot carbon fixation of acetylene (C2H2) and carbon monoxide (CO) by aqueous nickel sulfide (NiS) under hydrothermal (>100 °
Jessica Sobotta, Thomas Geisberger, Carolin Moosmann, Christopher M. Scheidler, Wolfgang Eisenreich, Günter Wächtershäuser, Claudia Huber   +6 more
doaj   +1 more source

The succession of rhizosphere microbial community in the continuous cropping soil of tobacco

Frontiers in Environmental Science
Introduction: Flue-cured tobacco is an important economic crop that is not tolerant of continuous cropping and can be influenced by planting soil conditions including rhizosphere microbial communities and soil physicochemical properties. The relationship
Guitong Li, Pengfei Gong, Jie Zhou, Lin Wang, Xin Song, Penghui Ding, Yunfeng Jin, Yuzhen Zhang, Xiaoqian Zhou, Jianming Yang, Zhaobao Wang, Long Yun, Jie Ren   +12 more
doaj   +1 more source

The modulating effect of light intensity on the response of the coccolithophore Gephyrocapsa oceanicato ocean acidification [PDF]

, 2015
Global change leads to a multitude of simultaneous modifications in the marine realm among which shoaling of the upper mixed layer, leading to enhanced surface layer light intensities, as well as increased carbon dioxide (CO2) concentration are some of ...
Bach, Lennart T., Riebesell, Ulf, Schulz, Kai G., Zhang, Yong   +3 more
core   +1 more source

P‐glycoprotein modulates the fluidity gradient of the plasma membrane of multidrug resistant CHO cells

FEBS Letters, EarlyView.
To explore the impact of the overexpression of the multidrug‐transporter P‐glycoprotein (ABCB1) on membrane fluidity, we compared the transversal gradient of mobility and microviscosity in plasma membranes of drug‐sensitive Chinese hamster ovary cells (AuxB1) and their multidrug‐resistant derivatives (B30) using the fluorescent n‐(9‐anthroyloxy) fatty ...
Roger Busche, John R. Riordan, Burkhard Tümmler   +2 more
wiley   +1 more source

Hierarchical Structure with Highly Ordered Macroporous-Mesoporous Metal-Organic Frameworks as Dual Function for CO2 Fixation. [PDF]

, 2019
As a major greenhouse gas, the continuous increase of carbon dioxide (CO2) in the atmosphere has caused serious environmental problems, although CO2 is also an abundant, inexpensive, and nontoxic carbon source.
Chu, Junmei, Li, Mingming, Li, Zhenxing, Meng, Dong, Wang, Rui, Wang, Zhengxu, Xing, Xiaofei, Xue, Jingjing, Yang, Yang   +8 more
core   +1 more source

Carbon Dioxide Fixation in the Brain

Journal of Biological Chemistry, 1962
SUMMARY Carbon dioxide fixation in brain was studied in cats to which NaHVO+ with and without ammonia, was administered by intracarotid infusion. Glutamic and aspartic acids, glutamine, glutathione, and y-aminobutyric acid were isolated from blood, brain, and liver, and their specific activities were determined.
Donald D. Clarke, Soll Berl, Genkichiro Takagaki, Heinrich Waelsch   +3 more
openaire   +3 more sources

A nucleotide‐independent, pan‐RAS‐targeted DARPin elicits anti‐tumor activity in a multimodal manner

Molecular Oncology, EarlyView.
We report a Designed Ankyrin Repeat Protein that binds and inhibits RAS proteins, which serve as central cell signaling hubs and are essential for the progression of many cancers. Its unique feature is that it does not discriminate between different RAS isoforms or mutations and is capable of binding to RAS in both its active (GTP‐bound) and inactive ...
Jonas N. Kapp, Wouter P. R. Verdurmen, Jonas V. Schaefer, Kari Kopra, Gabriela Nagy‐Davidescu, Elodie Richard, Marie‐Julie Nokin, Patrick Ernst, Rastislav Tamaskovic, Martin Schwill, Ralph Degen, Claudia Scholl, David Santamaria, Andreas Plückthun   +13 more
wiley   +1 more source

Efficient conversion of hemicellulose into high-value product and electric power by enzyme-engineered bacterial consortia

Nature Communications
As an abundant agricultural and forestry biomass resource, hemicelluloses are hard to be effectively degraded and utilized by microorganisms due to the constraints of membrane and metabolic regulations.
Bo Liang, Jing Yang, Chen-Fei Meng, Ya-Ru Zhang, Lu Wang, Li Zhang, Jia Liu, Zhen-Chao Li, Serge Cosnier, Ai-Hua Liu, Jian-Ming Yang   +10 more
doaj   +1 more source