Publications by authors named "Qi-fa Zhang"
Article Synopsis
- The Gaussian-modulated coherent state (GMCS) is an effective quantum key distribution method that manages background noise and ambient light well, but it's challenging to apply in free space with current polarization techniques.
- A new polarization coding system utilizing a self-compensating fiber Sagnac interferometer has been proposed, allowing for significantly lower voltage requirements and rapid polarization changes.
- This innovative setup, made from readily available fiber components, is compact and practical for mobile devices, potentially paving the way for practical applications in various technologies.
Article Synopsis
- The integration of quantum key distribution (QKD) with classical optical communication in the same fiber is becoming essential due to increasing demand for flexibility and fiber resources.
- A discrete variable QKD (DV-QKD) has been successfully implemented with up to 25 dBm launch power over 75 km of ultra-low-loss fiber, achieving high power levels not previously reported for simultaneous QKD and classical communication.
- The study demonstrates the viability and robustness of the QKD system for operation alongside ultra-high-power classical optical networks.
Article Synopsis
- The study addresses the growing need for combining quantum key distribution (QKD) with optical communication to enhance efficiency and reduce costs in metropolitan networks.
- The integration achieves 80 Gbps classical data transmission alongside a secure key rate of 11 Kbps over 20 km of standard telecom fiber, demonstrating effective resource use.
- The approach employs a stable phase coding system that withstands polarization variations, indicating promising applications for QKD in future high-capacity data networks.
Article Synopsis
- The study aimed to explore how miRNA-101 affects the expression of the EZH2 protein in human prostate cancer cells (LNCaP).
- Using fluorescence microscopy and qRT-PCR, researchers confirmed successful transfection of miRNA-101 and measured its impact on EZH2 mRNA and protein levels in different cell groups.
- Results showed that miRNA-101 significantly reduced EZH2 expression, suggesting its potential as a therapeutic approach for treating prostate cancer.
Organisms can adjust their phenotype in response to changing environmental conditions. This phenomenon is termed phenotypic plasticity. Despite its ubiquitous occurrence, there has been very little study on the molecular mechanism of phenotypic plasticity.
View Article and Find Full Text PDFRice yield and heading date are two distinct traits controlled by quantitative trait loci (QTLs). The dissection of molecular mechanisms underlying rice yield traits is important for developing high-yielding rice varieties. Here, we report the cloning and characterization of Ghd8, a major QTL with pleiotropic effects on grain yield, heading date, and plant height.
View Article and Find Full Text PDFUncovering the genetic basis of agronomic traits in crop landraces that have adapted to various agro-climatic conditions is important to world food security. Here we have identified ∼ 3.6 million SNPs by sequencing 517 rice landraces and constructed a high-density haplotype map of the rice genome using a novel data-imputation method.
View Article and Find Full Text PDFMany stress responsive genes have been reported with an effect on improving stress resistance in model plants under greenhouse conditions. Towards identification of genes for drought resistance breeding, seven well documented genes (CBF3, SOS2, NCED2, NPK1, LOS5, ZAT10, and NHX1) in stress resistance were selected in this study and transformed into rice cultivar Zhonghua 11 under the control of constitutive promoter Actin1 and stress-inducible promoter of a rice HVA22 homolog, and transgenic rice were tested for drought resistance under field conditions. A total of 1598 independent transgenic T0 plants were generated.
View Article and Find Full Text PDFArticle Synopsis
- Developed a new method called ESTClustering for organizing expressed sequence tags (ESTs) to enhance the identification of unique gene forms.
- The method uses consensus sequences and combines tools like megablast and phrap to effectively group ESTs, reducing errors and revealing gene families and alternative splicing forms.
- Analyzed large datasets from Arabidopsis and rice, resulting in thousands of EST clusters that closely align with predicted gene counts, showcasing the efficiency of the ESTClustering approach.
This study was conducted with a recombinant inbred line (RILs) population consisting of 240 recombination lines, derived from an elite combination, Zhenshan 97B x Minghui 63. The RILs and their parents were grown in a randomized complete design with two replications in the years of 1999 and 2000. Sheath blight response ratings for the population and their parents were identified by an improved method of inoculation, which was carried out with short woody toothpicks incubated with a Rhizoctonia solani strain, RH-9, and inserted the third sheath in the late tillering/green ring stage of growth.
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