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1,095 Result(s)
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Article
Open AccessThe genome sequence and structure of rice chromosome 1
The rice species Oryza sativa is considered to be a model plant because of its small genome size, extensive genetic map, relative ease of transformation and synteny with other cereal crops1,2,3,4. Here we report ...
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Article
Optimization of land use structure based on ecological GREEN equivalent
Optimization of land use structure consists of economic and social and ecological optimization. Applying the minds of system engineering and principles of ecology, this paper presents such thoughts: the optima...
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Article
Finding Geographic Information: Collection-Level Metadata
Certain types of information are associated with specific locations on Earth’s surface, and can be retrieved using location as the primary search key. The combination of a collection of such information and a ...
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Article
Radiation-mediated proteolysis of CDT1 by CUL4–ROC1 and CSN complexes constitutes a new checkpoint
Genomic integrity is maintained by checkpoints that guard against undesired replication after DNA damage. Here, we show that CDT1, a licensing factor of the pre-replication complex (preRC)1,2,3, is rapidly proteo...
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Article
Generation of HNO2 by bubbling NO in HNO3 system and its application in the PUREX process
This work is aimed at studying HNO2 generation by bubbling NO in HNO3 solution. The formation and decomposition of HNO2 depend on the 2NO+HNO3+H2O⇄3HNO2 reaction. During the HNO2 generation, the HNO3 concentratio...
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Article
Kinetics of the reduction of plutonium(IV) by hydroxyurea, a novel salt-free agent
The kinetics of the reduction of plutonium(IV) by hydroxyurea (HU), a novel salt free reductant, in nitric acid solutions has been studied. The observed reaction rate can be expressed as: -d[Pu(IV)]/dt=k ...
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Article
Study of the PTEN gene expression and FAK phosphorylation in human hepatocarcinoma tissues and cell lines
The tumor suppressor PTEN gene maps to chromosome 10q23.3 and encodes a dual specificity phosphatase. Mutations of this gene had been found in a variety of human tumors. In the present study, we analyzed the stru...
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Article
Uranium/plutonium and uranium/neptunium separation by the Purex process using hydroxyurea
Hydroxyurea dissolved in nitric acid can strip plutonium and neptunium from tri-butyl phosphate efficiently and has little influence on the uranium distribution between the two phases. Simulating the 1B contac...
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Chapter and Conference Paper
A Method of Aggregate Query Matching in Semantic Cache for Massive Database Applications
Aggregate queries are frequent in massive database applications. Their execution tends to be time consuming and costly. Therefore efficiently executing aggregate queries is very important. Semantic cache is a ...
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Chapter and Conference Paper
Selective Attention Guided Perceptual Grou** Model
Selective attention works throughout the whole process of vision information processing. Existing attention models concentrate on its role in feature extraction in initial stage, but ignore role of attention i...
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Chapter and Conference Paper
Improved Program Dependence Graph and Algorithm for Static Slicing Concurrent Programs
Based on the comparison among existing slicing algorithms and analysis of the fact that Krinke’s algorithm [9] produces imprecise program slice for the program structure which has loops nested with one or more...
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Article
Uranium/plutonium and uranium/neptunium separation by the Purex process using hydroxyurea
Hydroxyurea dissolved in nitric acid can strip plutonium and neptunium from tri-butyl phosphate efficiently and has little influence on the uranium distribution between the two phases. Simulating the 1B contac...
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Chapter and Conference Paper
Approximating Inference on Complex Motion Models Using Multi-model Particle Filter
Due to its great ability of conquering clutters, which is especially useful for high-dimensional tracking problems, particle filter becomes popular in the visual tracking community. One remained difficulty of ...
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Article
AVP: A Highly Efficient Transport Protocol for Low Bit Rate Multimedia Communications
Utilization of Internet communications in distance learning, distributed simulation, and distributed work groups involves multimedia transmission of animation, voice and video clips. Highly compressed audio-vi...
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Article
Highly efficient molecular delivery into mammalian cells using carbon nanotube spearing
Introduction of exogenous DNA into mammalian cells represents a powerful approach for manipulating signal transduction. The available techniques, however, are limited by low transduction efficiency and low cel...
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Article
Melting evolution and diffusion behavior of vanadium nanoparticles
Molecular dynamics calculations have been performed to study the melting evolution, atomic diffusion and vibrational behavior of bcc metal vanadium nanoparticles with the number of atoms ranging from 537 to ...
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Article
HIV Prevention Community Planning: Challenges and Opportunities for Data-Informed Decision-Making
The use of data in decision-making by the Massachusetts Prevention Planning Group (MPPG) wasassessed using multiple methods: in-depth interviews, member surveys, directed observations, and archival review. Thr...
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Article
HIV Prevention Community Planning: Enhancing Data-Informed Decision-Making
The primary purpose of this study was to test the impact of the first year of a 3-year intervention designed to enhance the use of behavioral data in the Massachusetts HIV Prevention Community Planning Group (...
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Article
Aberrant Methylation in CpG Islands of p15 and p16 Tumor Suppressor Genes in Pancreatic Cancer Tissue
Objective: To detect the aberrant methylation patterns in the CpG islands of p16 and p15 tumor suppressor genes, and to analyze its correlation with pancreatic carcinogenesis and with clinicopathological chara...
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Chapter and Conference Paper
Linkability of a Blind Signature Scheme and Its Improved Scheme
Blind signature allows a user to obtain signatures from an authority on any document, in such a way that the authority learns nothing about the message that is being signed. The blindness is an important property...