Results 91 to 100 of about 114,467 (185)

Rapid one-step separation and purification of recombinant phenylalanine dehydrogenase in aqueous two-phase systems [PDF]

, 2008
Background: Phenylalanine dehydrogenase (PheDH; EC 1.4.1.20) is a NAD +-dependent enzyme that performs the reversible oxidative deamination of L-phenylalanine to phenylpyruvate.
Mohammadi, H.S., Omidinia, E., Taherkhani, H.   +2 more
core  

Quenching and partitioning in Si/Al-free steels: effect of quenching temperature

Journal of Materials Research and Technology
Carbon partitioning is a feasible way to stabilize austenite against martensite transformation at room temperature in quenching and partitioning (Q&P) steels.
Dezhen Yang, Youjing Zhang, Xingwang Cheng, Lin Yang, Yingchun Wang, Chao Zhang, Xiaohui Wang, Zhiping Xiong   +7 more
doaj   +1 more source

Dynamic Quantitative Precipitation Estimation Study of Polarization Parameter of Radar Based on Tile Partitioning

Gaoyuan qixiang
The QPE_TP algorithm of the reflectivity factor shows significant improvements over traditional precipitation estimation methods.To fully leverage the advantages of polarization radar in quantitative precipitation estimation （QPE）， a tiled regional ...
Jiahui LI, Jianli MA, Mingxuan CHEN, Zhao SHI   +3 more
doaj   +1 more source

Equilibrium states of humid catchments satisfying both energy and mass conservations

Geoscience Letters
Natural catchments are supposed to obey both energy and mass conservations. As two conservation principles are related through evapotranspiration, the ideal energy partitioning at the equilibrium state also determines the mass partitioning. A fundamental
Sanghyun Yoo, Kwanghun Choi, Kyungrock Paik   +2 more
doaj   +1 more source

Breunnerite grain and magnesium isotope chemistry reveal cation partitioning during aqueous alteration of asteroid Ryugu

Nature Communications
Returned samples from the carbonaceous asteroid (162173) Ryugu provide pristine information on the original aqueous alteration history of the Solar System.
Toshihiro Yoshimura, Daisuke Araoka, Hiroshi Naraoka, Saburo Sakai, Nanako O. Ogawa, Hisayoshi Yurimoto, Mayu Morita, Morihiko Onose, Tetsuya Yokoyama, Martin Bizzarro, Satoru Tanaka, Naohiko Ohkouchi, Toshiki Koga, Jason P. Dworkin, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda, Shogo Tachibana, Yoshinori Takano   +35 more
doaj   +1 more source

Global-scale estimation of diffuse groundwater recharge : model tuning to local data for semi-arid and arid regions and assessment of climate change impact [PDF]

, 2005
Groundwater recharge is the major limiting factor for the sustainable use of groundwater. To support water management in a globalized world, it is necessary to estimate, in a spatially resolved way, global-scale groundwater recharge.
Döll, Petra, Flörke, Martina
core  

Seasonal Characteristics and Trends in Precipitation Partitioning in the Arctic

Abstract. Driven by growing impacts of changing precipitation amounts and phase on the Arctic’s natural and built environment, we examine seasonal patterns and trends in Arctic precipitation and partitioning between its liquid and solid forms. Use is made of data from the ERA5 reanalysis, Automated Surface Observing System stations over land, and a ...
Zaria Ireon Cast, Mark Serreze, Elizabeth Cassano, Andrew Barrett   +3 more
openaire   +2 more sources

Radiation measurements from polar and geosynchronous satellites [PDF]

Towards understanding the role of radiation in the dynamics of climate, a climatology of radiation budget data has been compiled and several aspects of the problem are under study: (1) minimum albedoes; (2) diurnal variation in cloudiness and the ...
Vonderhaar, T. H.
core   +1 more source

Measurements of Isoprene-Derived Organosulfates in Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry—Part 2: Temporal Variability and Formation Mechanisms [PDF]

, 2011
Organosulfate species have recently gained attention for their potentially significant contribution to secondary organic aerosol (SOA); however, their temporal behavior in the ambient atmosphere has not been probed in detail. In this work, organosulfates
Ault, Andrew P., Chan, Man Nin, Creamean, Jessie M., Edgerton, Eric S., Hatch, Lindsay E., Prather, Kimberly A., Seinfeld, John H., Su, Yongxuan, Surratt, Jason D.   +8 more
core   +1 more source

Connections Between Kuratowski Partitions of Baire Spaces, Measurable Cardinals, and Precipitous Ideals

Symmetry
In this paper, we investigate the existence and properties of Kuratowski partitions (K-partitions), i.e., partitions of Baire spaces such that all subfamilies of such partition sum to a set with the Baire property. We focus on the inherent symmetries in their structure and prove their connections to existence of measurable cardinals and precipitous ...
openaire   +2 more sources