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| 1 | Analysis and improvement of missile three-loop autopilots显示文摘The non-minimum phase feature of tail-controlled missile airframes is analyzed.Three selection strategies for desired performance indexes are presented.An acceleration autopilot design methodology based on output feedback and optimization is proposed.Performance and robustness comparisons between the two-loop and classical three-loop topologies are made.Attempts to improve the classical three-loop topology are discussed.Despite the same open-loop structure,the classical three-loop autopilot shows distinct characteristics from a two-loop autopilot with PI compensator.Both the two-loop and three-loop topologies can stabilize a static unstable missile.However, the finite actuator resource is the crucial factor dominating autopilot function. | Lin Defu Fan Junfang Qi Zaikang Mou Yu | 2009 | Journal of Systems Engineering and Electronics2009，20，4： | 10 |
| 2 | The chromosome-scale genome of Phoebe bournei reveals contrasting fates of terpene synthase (TPS)-a and TPS-b subfamilies显示文摘Terpenoids,including aromatic volatile monoterpenoids and sesquiterpenoids,function in defense against pathogens and herbivores.Phoebe trees are remarkable for their scented wood and decay resistance.Unlike other Lauraceae species investigated to date,Phoebe species predominantly accumulate sesquiterpenoids instead of monoterpenoids.Limited genomic data restrict the elucidation of terpenoid variation and functions.Here,we present a chromosome-scale genome assembly of a Lauraceae tree,Phoebe bournei,and identify 72 full-length terpene synthase(TPS)genes.Genome-level comparison shows pervasive lineage-specific duplication and contraction of TPS subfamilies,which have contributed to the extreme terpenoid variation within Lauraceae species.Although the TPS-a and TPS-b subfamilies were both expanded via tandem duplication in P.bournei,more TPS-a copies were retained and constitutively expressed,whereas more TPS-b copies were lost.The TPS-a genes on chromosome 8 functionally diverged to synthesize eight highly accumulated sesquiterpenes in P.bournei.The essential oil of P.bournei and its main component,b-caryophyllene,exhibited antifungal activities against the three most widespread canker pathogens of trees.The TPS-a and TPS-b subfamilies have experienced contrasting fates over the evolution of P.bournei.The abundant sesquiterpenoids produced by TPS-a proteins contribute to the excellent pathogen resistance of P.bournei trees.Overall,this study sheds light on the evolution and adaptation of terpenoids in Lauraceae and provides valuable resources for boosting plant immunity against pathogens in various trees and crops. | Xiao Han Junhong Zhang Shuang Han Sun Li Chong Guanliang Meng Minyan Song Yang Wang Shengcai Zhou Chengcheng Liu Luhuan Lou Xiongzhen Lou Longjun Cheng Erpei Lin Huahong Huang Qi Yang Zaikang Tong | 2022 | Plant Communications2022，3，6： | 3 |
| 3 | Study of trajectory optimization using terminal-node adaptive-altered spline algorithm显示文摘The advantage of using a spline function to evaluate the trajectory parameters optimization is discussed. A new method that using adaptive varied terminal-node spline interpolation for solving trajectory optimization is proposed.And it is validated in optimizing the trajectory of guided bombs and extended range guided munitions(ERGM).The solutions are approximate to the real optimization results.The advantage of this arithmetic is that it can be used to solve the trajectory optimization with complex models.Thus,it is helpful for solving the practical engineering optimization problem. | Xia Qunli Guo Tao Qi Zaikang | 2009 | Journal of Systems Engineering and Electronics2009，20，3： | 2 |
| 4 | Identification and evaluation of reference genes for normalization in quantitative real-time PCR analysis in the premodel tree Betula luminifera显示文摘Betula luminifera is a commercial tree species that is emerging as a new model system for tree genomics research. A draft genomic sequence is expected to be publicly available in the near future, which means that an explosion of gene expression studies awaits. Thus, the work of selecting appropriate reference genes for q PCR normalization in different tissues or under various experimental conditions is extremely valuable. In this study, ten candidate genes were analyzed in B. luminifera subjected to different abiotic stresses and at various flowering stages.The expression stability of these genes was evaluated using three distinct algorithms implemented using ge Norm,Norm Finder and Best Keeper. The best-ranked reference genes varied across different sample sets, though RPL39,MDH and EF1 a were determined as the most stable by the three programs among all tested samples. RPL39 and EF1 a should be appropriate for normalization in N-starved roots,while the combination of RPL39 and MDH should be appropriate for N-starved stems and EF1 a and MDH should be appropriate in N-starved leaves. In PEG-treated(osmotic) roots, MDH was the most suitable, whereas EF1 a was suitable for PEG-treated stems and leaves. TUA was also stably expressed levels in PEG-treated plants. The combination of RPL39 and TUB should be appropriate for heat-stressed leaves and flowering stage. For reference gene validation, the expression levels of SOD and NFYA-3were investigated. This work will be beneficial to future studies on gene expression under different abiotic stress conditions and flowering status in B. luminifera. | Jun Wu Junhong Zhang Ying Pan Huahong Huang Xiongzhen Lou Zaikang Tong | 2017 | Journal of Forestry Research2017，28，2： | 1 |
| 5 | De novo characterization of the Chinese fir (Cunninghamia lanceolata) transcriptome and analysis of candidate genes involved in cellulose and lignin biosynthesis显示文摘 | Huang Huahong Xu Lili Tong Zaikang | | 0，，01： | 1 |
| 6 | A neural-network-based experimental technique for determining z-transfer function coefficients of a building envelope 显示文摘 | CHEN Youming CHEN Zaikang | 2000 | Building and Environment2000，35，： | 1 |
| 7 | Exploit SSR in Cryptromeria fortunei and application in genetic diversity analysis显示文摘Cryptromeria fortunei is one of the main forest plantation species in the subtropical high altitude areas in China. In this paper we collected 49 C. fortunei germplasm resources and provides a study of the utility of freely available C. japonica EST resources for the development of markers necessary for genetic diversity analyses of C.fortunei. By screening 24,299 EST sequences from C.japonica with SSR Finder, we identified 2384 ESTs carrying 2783 SSR motifs. We successfully obtained 364(15 %) primers from 2419 putative SSR loci. Of the 80 candidate SSR markers tested, 70(87.5 %) yielded stable and clear PCR products. With those primers, the genetic diversity of 49 C. fortunei we collected was studied. The results showed that 18 primers yield polymorphism within these accessions. These 18 primers generated 48 scorable SSR loci and the average number of polymorphic SSR loci per primer was 2.7. The PIC value varied from 0.375 to0.8101, with the average of 0.4780. The Shannon index is0.5718, and the value of the observed number of alleles and effective number of alleles are 1.9167 and 1.7289,respectively. The genetic coefficient of these 49 accessions varied from 0.28 to 0.87. According to the genetic distances, a cluster tree was constructed. At genetic coefficient of 0.60, these 49 accessions can group into 3: group Ⅰ contains only FJ-laizhou accession, and group Ⅱ contains 2 accessions from FJ-layang, and the other one group contains mixed accessions. At genetic coefficient of 0.68, the former groupⅡwas constructed into 7 subgroups, with the first 3 subgroups contain 16 accessions in which 11(69 %)are from Fujian province, and the later 4 subgroup contain31 accessions in which 20(65 %) were from Zhejiang province. | Yongquan Lu Jingli Zhang Zaikang Tong | 2015 | Journal of Forestry Research2015，26，4： | 1 |
| 8 | Transfer function method to calculate moisture absorption and desorption in buildings显示文摘 | Chen Youming Chen Zaikang | 1998 | Building and Environment1998，33，4： | 1 |
| 9 | Numerical solution to theair flow and its application in the Ventilation and AirConditioning Engineerings 显示文摘 | Chen Zaikang Zhuang Damin | 1988 | Journal of HunanUniversity : Natural Science1988，15，1： | 1 |
| 10 | Response of Chinese fir seedlings to low phosphorus stress and analysis of gene expression differences显示文摘Chinese fir(Cunninghamia lanceolata) is an excellent fast-growing timber species occurring in southern China and has significant value in the forestry industry. In order to enhance the phosphorus utilization efficiency in Chinese fir, four clones named X6, S3, S39 and FK were used, and low phosphorus(LP) stress experiments were performed to analyze the response of different clones to phosphorus deficiency. According to the results on seedling height, maximum root length, leaf blade aspect ratio, root ratio, malondialdehyde content, acid phosphates activity,proline content, soluble protein level, and chlorophyll a and b levels of the tested clones, compared to the control groups(CK), the phosphorus high efficiency clone X6 was screen out for transcriptome sequencing experiments. De novo RNA-seq was then used to sequence the root transcriptomes of X6 under LP stress and CK, and we then compared the gene expression differences under the two conditions. A total of 3416 SDEGs were obtained by comparing the LP and CK groups, among which 1742 were up-regulated and 1682 were down-regulated. All SDEGs obtained from the LP and CK treated samples were subjected to KEGG annotation and classification. Through classification statistical analysis using WEGO software,607 SDEGs obtained KEGG pathway annotations, which were related to 206 metabolic pathways. In Chinese fir subjected to LP stress, 53 SDEGs related with phosphorus metabolism, and phosphate uptake and transport were obtained from our transcriptome data. Based on the phosphorus metabolism pathway obtained by KEGG classification, combined with previously report on gene annotation related with phosphorus metabolism, the enzymes encoded by SDEG related with phosphorus metabolism and their expression pattern were mapped onto phosphorus metabolism pathway. | Jianhui Li Dingwei Luo Guifang Ma Licui Jia Jinliang Xu Huahong Huang Zaikang Tong Yong-Quan Lu | 2019 | Journal of Forestry Research2019，30，1： | 1 |
| 11 | Research Advance in Construction of Forest Genetic Linkage Map显示文摘Forest genetic maps are an important component within the forest biologist’s toolkit, underpinning forest improvement programs.The estimation of forest genetic maps is a conceptually simple yet computationally complex problem,due to long growth period and high heterozygosis and genetic load of forest trees.At present,some genetic maps of trees have been constructed.This paper reviewed the process of forest genetic map construction,highlighting its uniqueness,and pointed out the problems that might rise in mapping.Finally, prospect was made for constructing the high density genetic map of trees. | Chen Zheng Tong Zaikang | 2012 | Chinese Forestry Science and Technology2012，11，3： | 0 |
| 12 | Cloning and Bioimformatic Analysis of Cellulose Synthase-like Protein Gene,CICsID1 from Cunninghamia lanceolata显示文摘The protein structure of the cellulose synthase-like protein(CSL) was similar to cellulose synthase(CesA),including the conservative sequence D,D,D,QXXRW.One full-length cDNA of the cellulose synthase-like protein D(CslD) gene was cloned by reverse transcriptase(RT)-polymerase chain reaction(PCR) with 5’,3’ rapid amplification of cDNA ends(RACE) methods using degenerate primers designed from the homologous sequences of the CesA genes.A multiple comparison sequence analysis was conducted concurrently with bioinformatic methods to analyze the obtained sequence.Results of the sequence analysis showed that this cDNA was 4 150 bp in length and contained a single open reading frame encoding a protein of 1 132 amino acids.The multiple comparison sequence analysis showed that the deduced amino acid sequence shared high similarity (over 71%) with the ClCslD genes from Populus tremuloides,Oryza sativa,and Arabidopsis thaliana. This work will help lay an important foundation for further molecular studies with cellulose synthesis of plants. | Peng Shasha Tong Zaikang Huang Huahong Zhou Houjun Shi Jian Lin Erpei | 2012 | Chinese Forestry Science and Technology2012，11，3： | 0 |
| 13 | DNA methylation in tissues of Chamaedorea elegans显示文摘DNA methylation plays a crucial role in regulating plant development and tissue differentiation. In this study, we compared them ethylation levels in leaf, root, and stem in Chamaedorea elegans byusing the technique of methylation-sensitive amplified fragment length polymorphism AFLP. Over 19% (42/220) bases were uniformly methylated in these tissues. The percentages of polymorphism resulting from varied methylation in mature leaf (L1), young leaf (L2), baby leaf (L3),stem (S), young root (R1) and lignified root (R2) were 29.5%, 29.0%,27.1%, 30.7%, 63.0% and 28.3%, respectively. The numbers of polymorphic loci detected in the leaves of three developmental stages were similar, ranging from 20 to 30. In contrast, roots at the two developmental stages differed greatly, with 145 polymorphic loci detected in R1 and 27 in R2. Our results suggest that the methylation level in leaves slightly increases with aging, while that in roots decreases dramatically with aging. | LU Yongquan QING Jia LI Haiying TONG Zaikang | 2012 | Journal of Forestry Research2012，23，3： | 0 |
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