Results 121 to 130 of about 3,172,290 (290)

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Capturing Data Uncertainty in High-Volume Stream Processing [PDF]

, 2009
We present the design and development of a data stream system that captures data uncertainty from data collection to query processing to final result generation.
Liu, Anna, Diao, Yanlei, Tran, Thanh T. L., Tran, Thanh, Sutton, Charles A., Zink, Michael, Sutton, Charles, Peng, Liping, Li, Boduo   +8 more
core  

NITELIGHT: A Graphical Tool for Semantic Query Construction

, 2008
Query formulation is a key aspect of information retrieval, contributing to both the efficiency and usability of many semantic applications. A number of query languages, such as SPARQL, have been developed for the Semantic Web; however, there are, as yet,
Smart, Paul R., Shadbolt, Nigel R., Russell, Alistair, Braines, Dave   +3 more
core   +1 more source

GeoSpark SQL: An Effective Framework Enabling Spatial Queries on Spark

ISPRS International Journal of Geo-Information, 2017
In the era of big data, Internet-based geospatial information services such as various LBS apps are deployed everywhere, followed by an increasing number of queries against the massive spatial data.
Zhou Huang, Yiran Chen, Lin Wan, Xia Peng   +3 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Open issues in semantic query optimization in relational DBMS [PDF]

, 2004
After two decades of research into Semantic Query Optimization (SQO) there is clear agreement as to the efficacy of SQO. However, although there are some experimental implementations there are still no commercial implementations.
Genet, Bryan Howard, Hinze, Annika
core  

Resisting tracker attacks by query terms analysis [PDF]

, 2010
Tracker attacks pose a serious threat to databases, especially those used in manufactory and management in industry. These attacks can be used to infer sensitive information in databases and they are difficult to detect.
Ma, X, Xiao Qi Ma
core   +1 more source

QoS-Aware Approximate Query Processing for Smart Cities Spatial Data Streams. [PDF]

Sensors (Basel), 2021
Al Jawarneh IM, Bellavista P, Corradi A, Foschini L, Montanari R.   +4 more
europepmc   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source

Dynamic sink movement strategy for expedited query processing in Internet of things-based sensor networks

Journal of Engineering and Applied Science
Wireless sensor networks (WSNs) represent an essential infrastructure that supports the Internet of things (IoT) and enables intelligent data collection from various contexts.
Dongliang Xu
doaj   +1 more source