Results 131 to 140 of about 996,477 (244)

Small‐Crystal SAPO‐34 Preparation by Regulating Precursor Mixing Temperature for Methanol‐to‐Olefins Conversion

Carbon and Hydrogen, EarlyView.
By tuning the initial mixing temperature from 0°C to 80°C, the crystal size of SAPO‐34 can be adjusted from micro to nanoscale, reflecting a shift from classical single‐crystal growth at low temperatures to non‐classical polycrystalline aggregation at high temperatures.
Guanghua Liang, Junlan Guo, Xi Zhang, Ruiying Wang, Fene Gao   +4 more
wiley   +1 more source

Dynamics of the Northeast Greenland Ice Stream: the role of geothermal heat and subglacial hydrology [PDF]

, 2019
Ice streams are rivers of fast flowing ice, crucial for the mass balance of ice sheets. The Greenland Ice Sheet shows a complex flow pattern, where a few major ice streams drain most of the ice sheet, contributing to sea level rise.
Smith-Johnsen, Silje
core  

Oxidative Fast Pyrolysis Enabling Autothermal Production of Porous Functionalized Biochar and Anhydrosugar/Phenol‐Rich Bio‐Oil From Biomass

Carbon Energy, EarlyView.
Oxidative fast pyrolysis of biomass enables autothermal production of value‐added products. ABSTRACT Oxidative fast pyrolysis can potentially overcome the heat‐supply bottleneck of conventional fast pyrolysis by enabling autothermal operation while also tailoring product quality through controlled oxygen addition.
Bin Li, Mengge Song, Sunwen Xia, Kexin Jia, Wojciech Jerzak, Yusuf Makarfi Isa, Dongjing Liu, Xing Xie, Qingfa Zhang, Zhong Ma, Mingfeng Wang, Weiwei Liu, Shihong Zhang, Haiping Yang, Rock Keey Liew, Su Shiung Lam   +15 more
wiley   +1 more source

Advances in Sustainable Production of Bio‐Derived 5‐Alkoxymethylfurfural and Levulinate Esters: A Comprehensive Review

Carbon Energy, EarlyView.
The present review discusses the advancement in the catalytic synthesis of 5‐alkoxymethylfurfural (AMF) and levulinate esters (LEs) from the aspects of catalytic systems, reaction mechanisms, product isolation, and techno‐economic analysis, supplying valuable insights toward future sustainable and efficient manufacture of AMF and LEs. ABSTRACT The huge
Jun Zhang, Chunxiang Yang, Yuhe Liao, Jiawei Wang, Chengyu Li, Rui Shan, Haoran Yuan   +6 more
wiley   +1 more source

Ubiquitous data stream mining [PDF]

, 2004
The dissemination of data stream systems, wireless networks and mobile devices motivates the need for an efficient data analysis tool capable of gaining insights about these continuous data streams.
Zaslavsky, Arkady, Krishnaswamy, S., Krishnaswamy, Shonali, Gaber, M., Gaber, Mohamed M, Zaslavsky, A.   +5 more
core  

Genese des Nordseeraumes im Quartär

Fennia: International Journal of Geography, 1974
In spite of alterations due to transgressions, Pleistocene forms are still discernible in the North Sea area. In this study, explanation of their genesis is based on a reconstruction of the ice‑sheds of different dimen­sions and the dynamic elements of ...
Heinrich Reinhard
doaj  

Silica‐Supported Mononuclear Methyl‐Platinum Complexes Stabilized by Trimethylphosphine—Synthesis, Structure, and Reactions Under Reducing Conditions

Chemistry – A European Journal, EarlyView.
The article describes the synthesis and molecular transformations of a silica‐supported bis(phosphine)methylplatinum(II) complex under reactive (H2, CO) and inert gas atmospheres. The focus lies on the stabilizing effect of the sterically non‐demanding trimethylphosphine ligand, which alters the reactivity of the surface sites, compared to other ...
Lea S. Kopietz, Sven Schaefer, Oksana Storcheva, Gabriele Raudaschl‐Sieber, Johannes Bitzer, Wolfgang Kleist, Klaus Köhler   +6 more
wiley   +1 more source

Ice-stream demise dynamically conditioned by trough shape and bed strength. [PDF]

Sci Adv, 2019
Bradwell T, Small D, Fabel D, Smedley RK, Clark CD, Saher MH, Callard SL, Chiverrell RC, Dove D, Moreton SG, Roberts DH, Duller GAT, Ó Cofaigh C.   +12 more
europepmc   +1 more source

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Dynamics of active subglacial lakes in Recovery Ice Stream. [PDF]

J Geophys Res Earth Surf, 2018
Dow CF, Werder MA, Babonis G, Nowicki S, Walker RT, Csatho B, Morlighem M.   +6 more
europepmc   +1 more source