Gaussian mixture model-based target feature extraction and visualization

Journal of Visualization - Effective extraction and visualization of complex target features from volume data are an important task, which allows the user to analyze and get insights of the complex...     

航天通用测发控软件平台设计与应用

随着我国航天器频繁发射的常态化,对航天测发控软件技术的要求也逐渐提高,主要表现在提高软件通用性、自动化程度和数据处理能力三个方面。本文在分析测发控业务需求的基础上,提出了测发控信息全过程可配置、测试数据通用化处理、测试实时判读和试验数据快速后处理的方法,构建了航天通用测发控软件平台,实现了测发控软件的型号通用化,降低了软件研制成本,减少了现场测试人员和现场测试时间,提高了飞行器测发控效率。     

Domino reaction for the chemo- and stereoselective synthesis of trans-2,3-dihydrobenzofurans from N-thiophosphinyl imines and sulfur ylides

A novel domino annulation between sulfur ylides and salicyl N-thiophosphinyl imines was developed. The method allows the synthesis of a highly substituted trans-2,3-dihydrobenzofuran skeleton with high yield and excellent chemo- and stereoselectivity.     

用过剩压法生长金刚石过程石墨再结晶现象的研究

 描述了在过剩压驱动下金刚石晶种外延生过程中，大量伴生的石墨再结晶现象。再结晶石墨抑制了金刚石的自发成核；它们分布于合成腔触媒金属的低温区，结晶数量多，晶粒片状分层，尺寸大，但出现乱层晶体结构；同时产生一定数量的无定形碳。分析认为，这与长时间的低过剩压驱动，触媒金属内有足够的碳源供给，并具备在高温高压下石墨充分结晶但又达不到完全石墨化条件有关。还讨论了在低过剩压驱动下，促进金刚石晶体外延生长的碳源可能是活化的碳原子，而不是具有乱层结构特征的再结晶石墨。     

Preparation of erythromycin imprinted polymer by metal-free visible-light–induced ATRP and its application in sensor

Journal of Solid State Electrochemistry - Erythromycin (ERY) molecular imprinted polymer was prepared on the surface of Au electrode modified with Ni and Au nanoclusters (MIP/AuNCs/Ni/Au) via...     

优质立方体晶形金刚石的合成

 在研究Ni₇₀Mn₂₅Co₅-C体系中,金刚石结晶形太与温度压力关系的基础上,实验探索了控制温度压力“准静态”变化过程中,六八面体晶核逐渐“外延生长”,最终生长成为质量较好、晶种法完整的立方体金刚石的方法和规律。本工作对采用晶种法生长热沉用优质大单晶在控制晶形方面有一定的理论意义和实践指导作用。     

One‐pot Synthesis of Nitrogen and Phosphorus Co‐doped Graphene and Its Use as High‐performance Electrocatalyst for Oxygen Reduction Reaction

In this study, N,P co‐doped graphene (NPG) was prepared by a one‐step pyrolysis using a mixture of graphene oxide and hexachlorocyclotriphosphazene (HCCP), in which HCCP was used as both the N and P source. Furthermore, it is shown that NPG electrodes, as efficient metal‐free electrocatalysts, have a high onset potential, high current density, and long‐term stability for the oxygen reduction reaction.     

金刚石生长的高压溶剂中碳的输运及其影响

 实验证实，在金刚石生长的高温超高压溶剂中，碳原子通过溶解扩散而输运，并清楚地看到在溶剂中也有对流现象。而宏观的对流现象的存在及其对金刚石生长的影响是不可忽视的。