root

摘要： To address the relationships between the amount of nitrogen fertilizer application and the yield of double cropping rice systems,we investigated the effects of a cultivation pattern of strong seedlings with increased planting density and reduced nitrogen application(SDN)on the morphological and physiological characteristics of double cropping rice.Our results indicated that the effects of SDN on the morphological characteristics of the single plant roots of double cropping rice were not significant,but the morphological characteristics of the population roots were largely different.Specifically,SDN significantly increased the morphological indexes of the root population such as root fresh weight,root volume,root number,root length and root dry weight.The effects of SDN on the total root absorption areas and root active absorption areas of the single plants were non-significant,but it dramatically enhanced the total root absorption areas and root active absorption areas of the plant population during the tillering,heading and mature stages.In addition,SDN significantly increased the root bleeding intensity and elevated the soluble sugar and free amino acid contents of root bleeding sap.Compared to the traditional cultivation pattern(CK),SDN significantly increased root bleeding intensity at the heading stage by 4.37 and 8.90% for early and late rice,respectively.Meanwhile,SDN profoundly enhanced the soluble sugar contents of root bleeding sap by 12.85 and 10.41% for early and late rice,respectively.In addition,SDN also significantly enhanced free amino acid content of root bleeding sap by 43.25% for early rice and by 37.50% for late rice systems compared to CK.Furthermore,SDN increased the actual yield of double cropping rice mainly due to the higher effective panicle number and the larger seedsetting rate.The actual yields of early rice under SDN were higher than CK by 9.37 and 5.98% in 2016 and 2017,and the actual yields of late rice under SDN were higher than CK by 0.20 and 1.41% in 2016 and 2017,respectively.Correlation analysis indicated that the significant positive correlations were observed between the majority of the root indexes and the actual yield across the four different growth stages.

摘要： Intercropping cereals and legumes is practiced widely in the world for improving yields and economic benefits. Shorter legume crops in intercropping are shaded by taller cereals, substantially reducing legume growth and yield. Reducing shade in intercropping by shortening the plant height of cereals by seedling defoliation has been proposed as a practical approach to increase crop yields and land productivity. A two-year field experiment was conducted to investigate the effect of defoliation of cereal crops at seedling stage on the growth and yield of peanut(Arachis hypogaea L.) intercropped with corn(Zea mays L.) or millet(Setaria italica L.). In comparison with non-defoliation controls, defoliation reduced final plant height by 29 cm on average for corn and 18 cm for millet. Photosynthetically active radiation on peanut in intercropping systems with corn or millet intercropping was respectively 27.0% and 22.8% higher than those in controls, significantly improving the light environment of intercropped peanut. Net photosynthetic rates of peanut were on average 25.5% higher in corn and peanut intercropping and 19.6% higher in millet and peanut intercropping than those in non-defoliation controls. Total biomass of intercropped peanut increased owing to increased root growth. Across two years, yield of peanut intercropped with corn was 27.7% and with millet 32.8% higher than those of controls. Defoliation of cereal crops did not affect corn yield but significantly decreased millet yield by 24.5%. Our results suggest that applying seedling defoliation in intercropped corn could increase peanut yield without compromising corn yield in an intercropping system.

摘要： Trigonella persica is a valuable medicinal plant which comprises trigonelline that is secondary metabolite and important component in cosmetic and medicine.This research was conducted in order to evaluation the drought stress effect on growth parameters,root anatomical changes and trigonelline content in T.persica.Plants were grown under soil moisture corresponding to 100%,75%,50%and 25%field capacity for two weeks.The data showed that drought stress was significantly decreased fresh weight and dry weight of shoot and root.In addition,leaf area was declined due to drought stress.Interestingly,root length was enhanced by drought stress.Root microscopic study demonstrated that drought stress increased thickness of epidermal,endodermal,vascular bundle,central cylinder and parenchyma in T.persica.Drought stress caused a significant increment in alkaloid and trigonelline content in aerial parts and roots of T.persica.These results revealed that T.persica responded to drought stress by increasing the alkaloid and trigonelline,as well as the anatomical changes in root.Considering the importance of trigonline and alkaloids,this work may open prospects for production of the pharmaceutically valuable secondary metabolites thereby drought stress.

摘要： ROOT既是加湿器又是除湿器,非常适合冬季干燥和夏季潮湿的地方,它的作用是保持最佳的湿度水平。如果湿度高,则开始除湿。当湿度低时,它开始加湿。它带有一个水箱,可根据湿度进行填充。当空气中的水分过多时,您需要将水倒空。此外,它还可以用作空气净化器,从底部吸入空气,然后从顶部释放净化空气。该设计基于传统的韩国火盆。ROOT是一种现代迭代,但它不是提供热量,而是帮助维持精确的湿度水平。其目的是帮助人们创造一个舒适的环境。

摘要： Phytohormones play important roles in plant growth and development,and polyploids are thought to be an important method for plant breeding.However,the relationship between ploidy and phytohormone is still unclear.In this study,barley at three ploidy levels were produced by microspore culture.Therefore,we further analyzed the phytohormone content in the shoots and roots of the three kinds of barley materials to study the effect of ploidy on phytohormones accumulation and distribution.The results showed that Abscisic acid(ABA),gibberellin(GA),jasmonic acid(JA),auxin(IAA),salicylic acid(SA)and cytokinin(CTK)were successfully determined in shoots and roots using LC-MS(liquid chromatography mass spectrometry).By comparing the shoots of the haploid and diploid plants,it was found that the distribution trend of the six phytohormones was consistent,and another consistent trend was found in the roots of the diploid and tetraploid plants.In addition,we further analyzed the shoot/root ratio of the different phytohormones to identify the potential differences for haploid,diploid and tetraploid.Here,the relationship between ploidy and phytohormone we provided would provide new insights into understanding the new phenotypes that occur in polyploid species.

摘要： BACKGROUND The objective of this work is displaying a successful treatment for an internal resorption case under operating microscope using bioceramic material.CASE SUMMARY Periapical radiograph showed radiolucent lesion representing large internal resorption of the root.The respective defect was obturated using endoscquence bioceramic material follow up at the month 18 after treatment revealed no abnormal finings clinically and radiographically.CONCLUSION New generations bioceramics have many advantages that internal root resorption cases can benefit from.The use of operating microscope helps to apply obturating materials with precision.However,long term study on a large sample is required in future studies.

摘要： Strigolactones(SLs)are classified into plant hormones,playing a key role as a mediator of plant growth in response to several abiotic stresses.Cadmium(Cd),a common heavy metal and soil pollutant,can suppress plant growth and development.In this work,we explored the effects of exogenous SLs on root formation in response to Cd stress using melon seeds subjected to seven germination treatments:CK(control),Cd(300 mmol·L^(-1) CdCl2),and SL1eSL5(CdCl2-stressed seeds pretreated with 0.1,0.5,1,2,and 3 mmol·L^(-1) GR24 solutions).The results indicated that SLs increased the antioxidant enzyme activities and root vigor and decreased the malondialdehyde(MDA)contents in the roots of Cdstressed melon seedlings.Then we used transcriptomic and metabolomic analyses to explore the mechanisms by which exogenous SLs protect against Cd stress.There were 242 significant differentially expressed genes(DEGs)(78 upregulated,164 downregulated)and 247 significantly differentially expressed metabolites(DEMs)(222 upregulated,25 downregulated)between the Cd and SL3 treatments.SLs altered the expression of genes related to redox formation processes,including peroxidase(POD),lipoxygenase(LOX),glutamate dehydrogenase(GDH),and glutathione S-transferase(GST).In addition,we found that SLs regulated the expression of the MYB,AP2/ERF,bHLH,and WRKY transcription factor families.The combined transcriptomic and metabolomic analyses revealed that the DEGs and DEMs involved in Cd stress alleviation were mainly related to the gene expression of jasmonic acid(JA)and flavonoid biosynthesis.SLs might induce LOX-related genes to regulate JA biosynthesis.Moreover,SLs might promote flavonoid biosynthesis by regulating eleven flavonoid-related genes and eight metabolites.The results provide a new perspective for studying the adaptation of plants to Cd stress.

摘要： K荧光辐射装置可填补国内超大型测量面积核辐射探测器计量检定需求,该装置具通量高、能量点多、单色性好、有成本低、即开即用等优势。其原理是X射线光机发射出的X射线轰击辐射体材料产生多种特征X射线即荧光射线,在荧光射线出射路径上加入次级过滤器吸收掉多余的射线以提高荧光纯度,辐射体以及次级过滤器的材料厚度值与荧光产额、纯度直接相关。通过MC(Monte Carlo)程序计算荧光装置各项指标参数结果,指导后期试验装置的建立和研究,MCNP5(Monte Carlo N Particle Transport Code)软件模拟Cs_(2)SO_(4)辐射体数据表明:荧光装置具有良好的屏蔽和准直的效果,荧光以辐射体中心垂直面呈对称逐渐减小分布;荧光产额随着辐射体厚度的增加逐渐增大,但存在相对饱和厚度值,即辐射体达到一定厚度值以后,荧光产额不再随辐射体厚度的增加而增大,而是趋于饱和状态;为获取单一能量荧光辐射场,在荧光出射束方向增加次级过滤器TeO_(2)材料,其吸收L,K_(β)K_(β)射线会远远大于K_(α)射线,以达到消除L,K_(β)射线保留K_(α)射线目的,形成单能的参考辐射场;在距离辐射体中心30 cm处,通过多组数据表明,次级过滤厚度为0.035 cm时,荧光纯度94.521%为最大且荧光产额最高;荧光纯度随着次级过滤器材料的厚度增加呈现先增加后逐渐减小的趋势;使用LEHGe探测器实际测量获取K荧光辐射装置能谱数据,通过ROOT程序对测量能谱数据处理和分析,拟合出K_(α)1和K_(α)2能量点的峰位道址误差小于0.005%,测量分析出其能量值与理论值偏差分别为0.19%,0.23%,测量结果与实际理论能量值相符。测量结果可验证MCNP5程序计算出的次级过滤器材料具有良好吸收效果且实现了单能荧光参考辐射场。

摘要： 2022年10月14日,中国科学院分子植物科学卓越创新中心赵杨研究组于《Developmental Cell》上在线发表了题为“Root twisting drives halotropism via stress-induced microtubule reorientation”的研究论文。该研究在生化水平、细胞水平和遗传水平阐明了ABA激活的SnRK2.6蛋白激酶磷酸化修饰微管结合蛋白SP2L介导根尖避盐性的作用机制,为培育抗逆稳产作物提供了新的策略和分子靶点。

摘要： The root system is fundamental for maize growth and yield.Characterizing its heterogeneity and cell type-specific response to nitrate at the single-cell level will shed light on root development and nutrient uptake.We profiled the transcriptomes of>7000 cells derived from root tips of maize seedlings grown on media with or without nitrate,and identified 11 major cell types or tissues and 85 cell type-specific nitrate-response genes,including several known nitrate metabolic genes.A pseudotime analysis showed a continuous pseudotime series with the beginning at meristematic zone cells and showed that the root hair cell was derived by differentiation of a subset of epidermal cells.Interspecies comparison of root cells between maize and rice revealed the conservation and divergence of the root cell types and identified 57,216,and 80 conserved orthologous genes in root hair,endodermis,and phloem cells respectively.This study provides a global view of maize root tip developmental processes and responses to nitrate at the single-cell level.The genes described in the present work could serve as targets for further genetic analyses and accurate regulation of gene expression and phenotypic variation in specific cell types or tissues.

摘要： 本发明公开一种基于Android系统的免Root无侵入的安全通信方法，该方法用于实现Android智能设备与服务器之间的数据安全交互，包括：在Android智能设备中植入动态抓包模块和安全客户端模块；启动Android智能设备的应用程序；应用程序加载动态抓包模块，加载成功，则应用程序继续运行，加载失败，则应用程序停止运行；应用程序与服务器通过安全应用代理模块进行数据交互。本发明在整个数据交互过程中免Root无侵入，每一个应用程序都会加载一个动态抓包模块，不同的应用程序与服务器之间的信息通道是彼此独立的，可以有效隔离不同应用程序之间的数据，防止应用程序越权访问。

摘要： 本发明提供了一种基于安卓系统通过Root调用服务的模块及方法，包括执行特权操作的应用程序，和以Root用户身份运行的特权进程；应用程序包括Shell进程和ContentProvider单元；特权进程包括su程序、app_process程序和dex程序；应用程序配置为通过Shell进程调用su程序，建立链接；应用程序通过命令Shell进程执行特权进程的app_process程序；特权进程配置为进行初始化并创建远程Binder对象，将远程Binder对象通过应用程序注册的ContentProvider单元发送至应用程序。其具有授予撤销应用指定权限、静默安装应用、配置默认应用等功能。

摘要： 本发明所提供的一种基于Root链的溯源平台及Root链码箱，所述溯源平台包括：Root链码箱节点模块，所述Root链码箱节点模块用于增加不可变更的Root链码箱节点，并记录每个Root链码箱节点下Root链码箱的流转信息。本发明通过建立溯源平台，进而通过溯源平台追踪用于封装藏品的Root链码箱的流转情况，以实时掌握藏品的流转信息以及藏品的藏品信息，使得藏品的流转过程透明化，利于在大众视野下呈现更多的藏品，进而体现藏品的历史价值和经济价值。

摘要： 本发明提出了一种配电自动化终端Root账户远程登录权限检测方法，涉及网络安全技术领域，包括以下步骤：将搭载了检测工具的终端连入配电终端的网络；扫描配电终端的远程连接端口，检测所有远程连接端口的安全性；获取安全远程连接配电终端的账户密码并输入到检测工具中，尝试以Root权限远程登录配电终端；将所述账户密码以普通权限远程登录配电终端，查验该账户密码是否登陆成功；查验配电终端系统文件中检测远程登录相关的参数的参数值。该方法解决了现在人工对设备权限进行分析时，设备数量及端口数量过多，运维人员检测、记录和管理所有设备的情况将十分复杂，工作量巨大的问题。

摘要： 本发明公开了一种幂迭代辅助Root‑MUSIC的快速MIMO测向方法及装置，方法如下：选取全阵列的少量天线来对辐射源方向进行粗略估计，通过ESPRIT算法来估计入射波信号的初始角度，基于该估计值拓展构建阵列流形的初始值；在该全阵列初始阵列流形的基础上，对全部阵元采用幂迭代方法来求解更加准确的阵列流形；根据阵列流形，采用Root‑MUSIC算法来估计最终的到达方向；装置包括模型构建模块、ESPRIT算法模块、幂迭代求解模块、Root‑MUSIC算法模块。本发明能够趋近并达到全数字阵列的克拉美罗界，可有效避免全阵列特征值分解和谱峰搜索操作的高复杂度，在确保较高测向精度的同时显著降低了计算复杂度。

摘要： 本发明涉及一种基于矩阵重构Root‑MUSIC算法的FMCW雷达测距方法，包括步骤：S1：对差频信号进行堆叠，获得一个M×L维的矩阵X；S2：对矩阵进行奇异值分解，构建奇异值向量，并根据稀疏性原理对奇异值向量进行重构，获得重构的奇异值向量；S3：根据重构的奇异值向量得到重构后的矩阵X1，并对矩阵X1的对角线上的元素取平均，得到矩阵X2；S4：对矩阵X2的协方差矩阵进行特征值分解，获得噪声子空间；S5：根据噪声子空间构建多项式f(wi)，并求解f(wi)＝0，得到频率的估计值S6：由频率的估计值得到各目标与雷达之间的距离值本发明的方法提升了噪声环境下多频率信号的频率分辨率，从而提升FMCW雷达多目标测距精度和分辨能力。

摘要： 本发明提供了一种基于安卓系统通过Root调用服务的模块及方法，包括执行特权操作的应用程序，和以Root用户身份运行的特权进程；应用程序包括Shell进程和ContentProvider单元；特权进程包括su程序、app_process程序和dex程序；应用程序配置为通过Shell进程调用su程序，建立链接；应用程序通过命令Shell进程执行特权进程的app_process程序；特权进程配置为进行初始化并创建远程Binder对象，将远程Binder对象通过应用程序注册的ContentProvider单元发送至应用程序。其具有授予撤销应用指定权限、静默安装应用、配置默认应用等功能。

摘要： 本申请涉及一种针对非root安卓手机的路测系统及方法。其中，所述系统包括：相互通信连接的手机端和PC端；手机端为待进行路测的非root安卓手机；手机端安装有路测软件，PC端包含Windows系统代理库并安装有基于Windows系统的数据采集客户端；数据采集客户端用于利用Windows系统代理库采集手机端的信令数据，并将采集的信令数据发送至路测软件；路测软件用于对接收的信令数据进行处理，从而完成对手机端的路测。如此设置，对于非root安卓手机，不用受制于手机厂商能否及时提供安卓系统代理库，只要有Windows系统代理库就能够对手机进行路测，从而能够使路测产品及时投入市场。

摘要： 本发明公开一种智能电视root权限控制方法、系统及存储介质，用于控制智能电视切换超级用户权限，将用户和智能电视系统信息按照二维码信息格式进行加密后形成证书文件；智能电视系统接收到切换超级用户命令时，检测存储区域的证书文件；智能电视系统读取证书文件解密为明文数据，将明文数据与智能电视终端系统信息对比，当明文数据与智能电视终端系统信息匹配时，授予root权限，否则不授予root权限。本发明有效保障了智能电视系统root权限的安全，也保证了工程师进行调试的效率。

摘要： 本发明涉及计算机科学技术领域，具体涉及一种基于X86平台的Jailhouse运行Linux系统的方法，包括如下步骤：S1、基于Jailhouse程序在X86平台上构建QEMU虚拟机，所述QEMU虚拟机用于模拟Linux系统；S2、取出所述QEMU虚拟机的构建文件中的Linux内核文件和Linux根系统文件；S3、修改Jailhouse提供的linux‑x86‑demo.c，并生成新的linux‑x86‑demo.cell；S4、合并所述Linux内核文件、所述Linux根系统文件和所述linux‑x86‑demo.cell，生成合并文件；S5、通过所述合并文件在X86平台上运行non‑root Linux。该方法能够实现在X86平台上使用Jailhouse运行non‑root Linux，能够大幅度缩减国内相关领域工程师的技术调研时间。