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| 1 | A Strigolactone Biosynthesis Gene Contributed to the Green Revolution in Rice显示文摘Plant architecture is a complex agronomic trait and a major factor of crop yield,which is affected by several important hormones.Strigolactones(SLs)are identified as a new class hormoneinhibiting branching in many plant species and have been shown to be involved in various developmental processes.Genetical and chemical modulation of the SL pathway is recognized as a promising approach to modify plant architecture.However,whether and how the genes involved in the SL pathway could be utilized in breeding still remain elusive.Here,we demonstrate that a partial loss-of-function allele of the SL biosynthesis gene,HIGH TILLERING AND DWARF 1/DWARF17(HTD1/D17),which encodes CAROTENOID CLEAVAGE DIOXYGENASE 7(CCD7),increases tiller number and improves grain yield in rice.We found that the HTD1 gene had been widely utilized and co-selected with Semidwarf 1(SD1),both contributing to the improvement of plant architecture in modern rice varieties since the Green Revolution in the 1960s.Understanding how phytohormone pathway genes regulate plant architecture and how they have been utilized and selected in breeding will lay the foundation for developing the rational approaches toward improving crop yield. | Yuexing Wang Lianguang Shang Hong Yu Longjun Zeng Jiang Hu Shen Ni Yuchun Rao Sanfeng Li Jinfang Chu Xiangbing Meng Lei Wang Ping Hu Jijun Yan Shujing Kang Minghao Qu Hai Lin Tao Wang Quan Wang Xingming Hu Hongqi Chen Bing Wang Zhenyu Gao Longbiao Guo Dali Zeng Xudong Zhu Guosheng Xiong Jiayang Li Qian Qian | 2020 | Molecular Plant2020，13，6： | 23 |
| 2 | The unconditional stable and convergent difference methods with intrinsic parallelism for quasilinear parabolic systems显示文摘A kind of the general finite difference schemes with intrinsicparallelism for the boundary value problem of the quasilinearparabolic system is studied without assuming heuristically thatthe original boundary value problem%for the quasilinear parabolic systemhas the unique smooth vector solution. By the method of a prioriestimation of the discrete solutions of the nonlinear differencesystems, and the interpolation formulas of the various norms ofthe discrete functions and the fixed-pointtechnique in finite dimensional Euclidean space, the existence anduniqueness of the discrete vector solutions of the nonlineardifference system with intrinsic parallelismare proved. Moreover the unconditional stability ofthe general finite difference schemes with intrinsic parallelismis justified in the sense of the continuous dependence of thediscrete vector solution of the difference schemes on the discretedata of the original problems in the discrete W(2,1)2 norms. Finally the convergence of the discrete vector solutions ofthe certain difference schemes with intrinsic parallelism to the unique generalized solution of the original quasilinear parabolic problem is proved. | ZHOU Yulin YUAN Guangwei SHEN Longjun Laboratory of Computational Physics, Center of Nonlinear Studies, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China | 2004 | Science China Mathematics2004，47，3： | 6 |
| 3 | THE UNCONDITIONAL STABLE DIFFERENCE METHODS WITH INTRINSIC PARALLELISM FOR TWO DIMENSIONAL SEMILINEAR PARABOLIC SYSTEMS显示文摘In this paper we are going to discuss the difference schemes with intrinsic parallelism for the boundary value problem of the two dimesional semilinear parabolic systems.The unconditional stability of the general finite difference schemes with intrinsic parallelism is justified in the sense of the continuous dependence of the discrete vector solution of the difference schemes on the discrete data of the original problems in the discrete W2^(2,1) norms.Then the uniqueness of the discrete vector solution of this difference scheme follows as the consequence of the stability. | Guangwei Yuanf Longjun Shen(National Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing, 100088, China) | 2003 | Journal of Computational Mathematics2003，21，1： | 5 |
| 4 | Benthic Habitat Quality Assessment Based on Biological Indices in Xiaoqing River Estuary and Its Adjacent Sea of Laizhou Bay,China显示文摘Based on the macrofauna data(2008-2011) in Xiaoqing River estuary and its adjacent sea, Laizhou Bay of Bohai Sea, China, the AZTI Marine Biotic Index(AMBI) and Multivariate AMBI(M-AMBI) were used for benthic habitat quality(BHQ) assessment. Results showed that BHQ presented an obvious trend of improvement along the direction of stream channel and river mouth, and in the coastal areas. AMBI and M-AMBI were significantly related to environmental pressure gradient data. Therefore, the two indices can well indicate BHQ in the studied area. However, there were significant differences between results of the two indices. In the cases of low taxa number and high abundance of single species, AMBI might overestimate BHQ. We thus adjusted its thresholds to solve this problem. And M-AMBI might overestimate BHQ when benthic assemblage was dominated by the opportunistic species. Then we could raise the weight of AMBI in the calculation of M-AMBI to handle the problem. | LUO Xianxiang LIN Song YANG Jianqiang SHEN Jiayu FAN Yuqing ZHANG Longjun | 2017 | Journal of Ocean University of China2017，16，3： | 3 |
| 5 | Homoharringtonine is a safe and effective substitute for anthracyclines in children younger than 2 years old with acute myeloid leukemia显示文摘Homoharringtonine (HHT),a plant alkaloid from Cephalotaxus harringtonia,exhibits a unique anticancer mechanism and has been widely used in China to treat patients with acute myeloid leukemia (AML) since the 1970s.Trial SCMC-AML-2009 presented herein was a randomized clinical study designed based on our previous findings that pediatric AML patients younger than two years old may benefit from HHT-containing chemotherapy regimens.Patients randomized to arm A were treated with a standard chemotherapy regimen comprising mainly of anthracyclines and cytarabine (Ara-C),whereas patients in arm B were treated with HHTcontaining regimens in which anthracyclines in all but the initial induction therapy were replaced by HHT.From February 2009 to November 2015,59 patients less than 2 years old with de novo AML (other than acute promyelocytic leukemia) were recruited.A total of 42 patients achieved a morphologic complete remission (CR) after the first course,with similar rates in both arms (70.6% vs.72.0%).At the end of the follow-up period,40 patients remained in CR and 5 patients underwent hematopoietic stem cell transplantation in CR,which could not be considered as events but censors.The 5-year event-free survival (EFS) was 60.2%± 9.6% for arm A and 88.0%± 6.5% for arm B (P=0.024).Patients in arm B experienced shorter durations of leukopenia,neutropenia,and thrombocytopenia and had a lower risk of infection during consolidation chemotherapy with high-dosage Ara-C.Consequently,the homoharringtonine-based regimen achieved excellent EFS and alleviated hematologic toxicity for children aged younger than 2 years with de novo AML compared with the anthracycline-based regimen. | Xiaoxiao Chen Yanjing Tang Jing Chen Ru Chen Longjun Gu Huiliang Xue Ci Pan Jingyan Tang Shuhong Shen | 2019 | Frontiers of Medicine2019，13，3： | 3 |
| 6 | A Hybrid Numerical Method to Cure Numerical Shock Instability显示文摘In this note,we propose a new method to cure numerical shock instability by hybriding different numerical fluxes in the two-dimensional Euler equations.The idea of this method is to combine a”full-wave”Riemann solver and a”less-wave”Riemann solver,which uses a special modified weight based on the difference in velocity vectors.It is also found that such blending does not need to be implemented in all equations of the Euler system.We point out that the proposed method is easily extended to other”full-wave”fluxes that suffer from shock instability.Some benchmark problems are presented to validate the proposed method. | Hao Wu Longjun Shen Zhijun Shen | 2010 | Communications in Computational Physics2010，8，10： | 3 |
| 7 | Unconditional Stablility of Parallel Alternating Difference Schemes for Semilinear Parabolic Systems显示文摘 | Yuan Guangwei Shen Longjun Zhou Yulin | 2001 | Appl Math Comput2001，117，： | 1 |
| 8 | DISCRETE MAXIMUM PRINCIPLE AND CONVERGENCE OF POISSON PROBLEM FOR THE FINITE POINT METHOD显示文摘这份报纸基于方向性的差别为有限的点方法使一些成为数学分析。由用仅仅为一阶的计算和秒顺序的五个附近的点的数字公式的明确的表达式的优点方向性的 differentials,新方法论被介绍给拉普拉斯算符操作符在 2D 上定义的 discretize 散布的点分布。有很弱的限制的一些足够的条件被获得,在哪个下面结果的计划是积极计划。作为后果,分离最大的原则被证明,并且第一命令 O (h) 的会聚的结果为在散布的点分布上定义的节的答案被完成,它能在一致的点分布上被提起直到 O (h2 ) 。 | Guixia Lv Shunkai Sun Longjun Shen | 2017 | Journal of Computational Mathematics2017，35，3： | 1 |
| 9 | Unconditional stability of parallel alternating difference schemes for semilinear parabolic systems显示文摘 | Yuan Guangwei Shen Longjun Zhou Yulin | 2001 | Appl Math Comput2001，117，： | 1 |
| 10 | Unconditional stability of parallel alternating difference schemes for semilinear parabolic systems显示文摘 | YUAN Guangwei SHEN Longjun ZHOU Yulin | 2001 | Appl Math Comput2001，117，23： | 1 |
| 11 | Unconditional stability of parallel alternating difference schemes for semilinear parabolic systems显示文摘 | Yuan guangwei Shen longjun Zhou yulin | 2001 | Appl Math Comput2001，117，： | 1 |
| 12 | Domain decomposition algorithm based on the group explicit formula for the heat equation显示文摘 | Yuan Guangwei Zhu Shaohong Shen Longjun | 2005 | Intern J Computer Math2005，82，： | 1 |
| 13 | Effects of silent myocardial ischemia on functional fitness and physical independence in 60–79-year-old adults显示文摘Objective:We examined the effect of silent myocardial ischemia(SMI)on functional fitness levels and physical independence in 60–79-year-old individuals.Methods:We conducted a cross-sectional study with 716 older adults and used an electrocardiograph and an ambulatory electrocardiogram to diagnose those with SMI.Physical independence was assessed using the Composite Physical Function scale,whereas physical fitness was assessed using the Senior Fitness Test battery.Results:The 60-79-year-old females and males with SMI were more likely to have lower scores for lower and upper body strength,agility/dynamic balance,and aerobic endurance(p<0.05)than those without SMI.The scores for lower and upper body flexibility in all age groups for both genders were not significant(p>0.05).Binary logistic regression analysis revealed that old adults with SMI had a higher risk of losing physical independence later in life than those without SMI(p<0.05).Conclusion:This study showed that individuals with SMI have lower fitness levels and increased risk of losing physical independence than those without SMI. | Longjun Cao Linke Li Lei Wang Shen Li Yingwu Chen Shilei Yuan Liping Huang | 2019 | Sports Medicine and Health Science2019，1，1： | 0 |
| 14 | THEORETICAL ANALYSES ON DISCRETE FORMULAE OF DIRECTIONAL DIFFERENTIALS IN THE FINITE POINT METHOD显示文摘For the five-point discrete formulae of directional derivatives in the finite point method,overcoming the challenge resulted from scattered point sets and making full use of the explicit expressions and accuracy of the formulae,this paper obtains a number of theoretical results:(1)a concise expression with definite meaning of the complicated directional difference coefficient matrix is presented,which characterizes the correlation between coefficients and the connection between coefficients and scattered geometric characteristics;(2)various expressions of the discriminant function for the solvability of numerical differentials along with the estimation of its lower bound are given,which are the bases for selecting neighboring points and making analysis;(3)the estimations of combinatorial elements and of each element in the directional difference coefficient matrix are put out,which exclude the existence of singularity.Finally,the theoretical analysis results are verified by numerical calculations.The results of this paper have strong regularity,which lay the foundation for further research on the finite point method for solving partial differential equations. | Guixia Lv Longjun Shen | 2022 | Journal of Computational Mathematics2022，40，1： | 0 |
| 15 | Temperature dependence of mechanical properties and damage evolution of hot dry rocks under rapid cooling显示文摘Understanding the differences in mechanical properties and damage characteristics of granitoid under high temperatures is crucial for exploring deep geothermal resources.This study analyzes the evolution of the acoustic emission(AE)characteristics and mechanical parameters of granodiorite and granite after heating and water cooling by uniaxial compression and variable-angle shear tests under different temperature gradients.We identify their changes in mesostructure and mineral composition with electron probe microanalysis and scanning electron microscopy.Results show that these two hot dry rocks have similar diagenetic minerals and microstructure,but show significantly different mechanical and acoustic characteristics,and even opposing evolution trends in a certain temperature range.At the temperatures ranging from 100℃to 500℃,the compressive and shear mechanical properties of granodiorite switch repeatedly between weakening and strengthening,and those of granite show a continuous weakening trend.At 600℃,both rocks exhibit a deterioration of mechanical properties.The damage mode of granite is characterized by initiating at low stress,exponential evolutionary activity,and intensified energy release.In contrast,granodiorite exhibits the characteristics of initiating at high stress,volatile evolutionary activity,and intermittent energy release,due to its more stable microstructure and fewer thermal defects compared to granite.As the temperature increases,the initiation and propagation of secondary cracks in granodiorite are suppressed to a certain extent,and the seismicity and brittleness are enhanced.The subtle differences in grain size,microscopic heterogeneity,and mineral composition of the two hot dry rocks determine the different acoustic-mechanical characteristics under heating and cooling,and the evolution trends with temperature.These findings are of great significance for the scientific and efficient construction of rock mass engineering by rationally utilizing different rock strata properties. | Longjun Dong Yihan Zhang Lichang Wang Lu Wang Shen Zhang | 2024 | Journal of Rock Mechanics and Geotechnical Engineering2024，16，2： | 0 |
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