To know the location of nodes is very important and valuable for wireless sensor networks (WSN), we present an improved positioning model (3D-PMWSN) to locate the nodes in WSN. In this model, grid in space is presente...To know the location of nodes is very important and valuable for wireless sensor networks (WSN), we present an improved positioning model (3D-PMWSN) to locate the nodes in WSN. In this model, grid in space is presented. When one tag is detected by a certain reader whose position is known, the tag’s position can be known through certain algorithm. The error estimation is given. Emulation shows that the positioning speed is relatively fast and positioning precision is relatively high.展开更多
Gibbons have experienced extensive karyotype rearrangements during evolution and represent an ideal model for studying the underlying molecular mechanism of evolutionary chromosomal rearrangements. It is anticipated t...Gibbons have experienced extensive karyotype rearrangements during evolution and represent an ideal model for studying the underlying molecular mechanism of evolutionary chromosomal rearrangements. It is anticipated that the cloning and sequence characterization of evolutionary chromosomal breakpoints will provide vital insights into the molecular force that has driven such a radical karyotype reshuffle in gibbons. We constructed and characterized a high-quality fosmid li- brary of the white-cheeked gibbon （Nomascus leucogenys） containing 192,000 non- redundant clones with an average insert size of 38 kb and 2.5-fold genome coverage. By end sequencing of 100 randomly selected fosmid clones, we generated 196 se- quence tags for the library. These end-sequenced fosmid clones were then mapped onto the chromosomes of the white-cheeked gibbon by fluorescence in situ hy- bridization~ and no spurious chimeric clone was detected. BLAST search against the human genome showed a good correlation between the number of hit clones and the number of chromosomes, an indication of unbiased chromosomal distribu- tion of the fosmid library. The chromosomal distribution of the mapped clones is also consistent with the BLAST search result against human and white-cheeked gibbon genomes. The fosmid library and the mapped clones will serve as a valu- able resource for further studying gibbons＇ chromosomal rearrangements and the underlying molecular mechanism as well as for comparative genomic study in the lesser apes.展开更多
The microchannel reactor is the most commonly used microreaction technology,an innovative reaction system developed in recent years.This study investigates the mass transfer behavior of a gas-liquid two‐phase Taylor ...The microchannel reactor is the most commonly used microreaction technology,an innovative reaction system developed in recent years.This study investigates the mass transfer behavior of a gas-liquid two‐phase Taylor flow in a microchannel by coupling the volume‐of‐fluid model and the species transport model.The concentration distribution and the volumetric mass transfer coefficient of the gas solute are determined and discussed in detail.The simulation results reveal that the double‐circulation flow influences the concentration distribution in the liquid slug.The highest value is observed at the bubble's surface and decreases rapidly along the vertical direction of the bubble.The increase of bubble velocity leads to a more apparent decreasing trend.The gas-liquid interface renewal rate of the bubble is accelerated with increasing bubble velocity,resulting in an increase in the average mass transfer rate in all regions of the bubble surface with an increase in bubble velocity.The results also indicate that the liquid film area contributes the most to the mass transfer behavior due to the most significant proportion and average mass transfer rate of the liquid film among the bubble.展开更多
文摘To know the location of nodes is very important and valuable for wireless sensor networks (WSN), we present an improved positioning model (3D-PMWSN) to locate the nodes in WSN. In this model, grid in space is presented. When one tag is detected by a certain reader whose position is known, the tag’s position can be known through certain algorithm. The error estimation is given. Emulation shows that the positioning speed is relatively fast and positioning precision is relatively high.
基金supported by the National Key R&D Program of China(2022YFE0210300,2022YFC2303401,2016YFD0500300,2021YFC0863300,and 2021YFC2300101)the National Natural Science Foundation of China(32070407)the special fund for Science and Technology Innovation Teams of Shanxi Province(202204051001022)。
基金the National Natural Science Foundation of China（No.30270719 and 30623007）.
文摘Gibbons have experienced extensive karyotype rearrangements during evolution and represent an ideal model for studying the underlying molecular mechanism of evolutionary chromosomal rearrangements. It is anticipated that the cloning and sequence characterization of evolutionary chromosomal breakpoints will provide vital insights into the molecular force that has driven such a radical karyotype reshuffle in gibbons. We constructed and characterized a high-quality fosmid li- brary of the white-cheeked gibbon （Nomascus leucogenys） containing 192,000 non- redundant clones with an average insert size of 38 kb and 2.5-fold genome coverage. By end sequencing of 100 randomly selected fosmid clones, we generated 196 se- quence tags for the library. These end-sequenced fosmid clones were then mapped onto the chromosomes of the white-cheeked gibbon by fluorescence in situ hy- bridization~ and no spurious chimeric clone was detected. BLAST search against the human genome showed a good correlation between the number of hit clones and the number of chromosomes, an indication of unbiased chromosomal distribu- tion of the fosmid library. The chromosomal distribution of the mapped clones is also consistent with the BLAST search result against human and white-cheeked gibbon genomes. The fosmid library and the mapped clones will serve as a valu- able resource for further studying gibbons＇ chromosomal rearrangements and the underlying molecular mechanism as well as for comparative genomic study in the lesser apes.
基金National Natural Science Foundation of China(NSFC),Grant/Award Numbers:61821002,92163213Applied Basic Research Program of Suzhou,Grant/Award Number:SYG202026+1 种基金Collaborative Innovation Center of Suzhou Nano Science and TechnologyPriority Academic Program Development of Jiangsu Higher Education Institutions。
文摘The microchannel reactor is the most commonly used microreaction technology,an innovative reaction system developed in recent years.This study investigates the mass transfer behavior of a gas-liquid two‐phase Taylor flow in a microchannel by coupling the volume‐of‐fluid model and the species transport model.The concentration distribution and the volumetric mass transfer coefficient of the gas solute are determined and discussed in detail.The simulation results reveal that the double‐circulation flow influences the concentration distribution in the liquid slug.The highest value is observed at the bubble's surface and decreases rapidly along the vertical direction of the bubble.The increase of bubble velocity leads to a more apparent decreasing trend.The gas-liquid interface renewal rate of the bubble is accelerated with increasing bubble velocity,resulting in an increase in the average mass transfer rate in all regions of the bubble surface with an increase in bubble velocity.The results also indicate that the liquid film area contributes the most to the mass transfer behavior due to the most significant proportion and average mass transfer rate of the liquid film among the bubble.
