scheme

摘要： This paper reviews the summary and analysis of special technical safety schemes for hazardous and ultrahazardous activities,supported by housing scaffolding,installation,and dismantling of outer wall attached tower crane,deep foundation pit with supporting structure,municipal bridge box girder formwork support,as well as grooved Larsen steel sheet pile,which are commonly seen in recent years,so as to enhance the pertinence,rationality,and economy of the special program to strengthen safety.

摘要： 2022年3月24日,中国船级社上海分社成功向中船动力集团颁发了世界首张采用Scheme B模式检验的低速二冲程发动机(WinGD 6RT-Flex 58T-E)Tier Ⅲ EIAPP证书。3月31日,由扬帆集团股份有限公司建造并安装该型号发动机同时配置中船动力集团低压选择性催化还原脱硝2.0系统(LP-SCR 2.0)的1868TEU集装箱船“新明州106”轮,在浙江舟山成功完成所有船上验证试验。4月1日,该轮胜利返航。

摘要： Proper interface and band alignment always play essential roles in the separation of photoexcited charge of photocatalysts.In this work,we prepared a homodispersed S-scheme carbon nitride homojunction with local electron structure difference by a facile pre-doping and two-step calcination approach.Boron doping into heptazine created extra acceptor impurity,and phosphorus doping into heptazine created extra donor impurity,which eventually modulated the electronic structure of carbon nitride.As heptazines with different element doping were integrated into carbon nitride by recalcination,B-CN and P-CN formed a homodispersed homojunction and thus produced a rich interface.Meanwhile,caused by Fermi energy levels equilibrium,the band bending constructed an S-scheme homojunction,which stimulated photogenerated electrons to transfer from CB of B-CN to VB of P-CN.The homodispersed S-scheme homojunction structure led to efficient suppression of recombination of photoinduced charge and retained stronger redox charge.Consequently,the photocatalytic performance was dramatically boosted to 2620 μmol g^(-1) from 60 μmol g^(-1) of pure CN in 4-h hydrogen evolution from water.This novel method for electron structure engineering helped to provide a new strategy for designing homojunction photocatalysts with excellent photocatalytic performance.

摘要： Dear editor,Higher-order masking is one of the most effective countermeasures against differential power analysis attacks(DPA)[1].However,this measure has not yet been widely applied to real-life applications because it suffers from heavy masking-overheads.The efficient realization of non-linear operations,such as substitution-box(S-box),is a major challenge.Among them,the addition-chain(AC)-based schemes are the most compelling approaches for addressing the efficiency issue.These schemes provide a feasible solution by reducing the number of non-linear multiplication required for the power function[2].However,it is very hard to further reduce the masking complexity by existing methods.

摘要： Dear editor,With the popularity of computers and networks in control systems,sampled-data control is becoming increasingly important and has attracted intensive attention over the past decades[1,2].However,for systems with serious uncertainties(without any known upper bounds),particularly additive uncertainties,it is rather challenging to achieve sampled-data control:the classical schemes with constant sampling rate usually fail to work,while schemes with variable sampling rate are complex and difficult to implement.

摘要： In this paper, we construct a class of semi-implicit difference method for time fractional diffusion equations—the group explicit (GE) difference scheme, which is a difference scheme with good parallelism constructed using Saul’yev asymmetric scheme. The stability and convergence of the GE scheme of time fractional diffusion equation are analyzed by mathematical induction. Then, the theoretical analysis is verified by numerical experiments, which shows that the GE scheme is effective for solving the time fractional diffusion equation.

摘要： A novel method of scheme design is proposed for power shifting transmissions of parallel hybrid electric vehicles(HEVs).First,shift sequences considering the path of power flow and shift logics are analyzed based on the graph theory model,abstracted from the degree-of-freedom(DOF)of the schemes.Second,the scheme of gear-pair and shaft,defined as the scheme that ignores the arrangement of synchronizers,is derived from the basic configuration,defined as the scheme of gear-pair and shaft that contains only one of each type of the variable connections,and the numbers of each type of the variable connections.Finally,a multi-parameter scheme,including the arrangement of synchronizers and gear ratios,is designed to optimize the results of synthesis.This method helps to gain a deeper understanding of the systematic design of other fixed gear transmission schemes,such as automated mechanical transmission,dual clutch transmission,and even some novel multi-input transmission.

摘要： 本公开提供一种Scheme请求校验方法、装置及设备，其中，Scheme请求校验方法包括：获取第一应用对第二应用的Scheme请求；生成第一随机数，并通过第一标识对所述第一随机数进行加密，得到第一加密信息，其中，所述第一标识作为密钥，所述第一标识与所述终端以及所述第一应用对应；对所述第一加密信息以及所述第一应用的信息进行加密，得到第二加密信息；将所述Scheme请求以及所述第二加密信息发送给所述第二应用，以使所述第二应用基于所述第二加密信息对所述Scheme请求进行校验；接收来自所述第二应用的所述Scheme请求的响应消息，所述响应消息中携带有所述第一加密信息；对所述第一加密信息进行解密，得到第一解密结果，根据所述第一解密结果确定Scheme请求结果。

摘要： 本发明公开了一步合成可见光响应的直接Z‑Scheme AgBr/Ag8W4O16光催化剂的方法。该光催化剂在微观上为纳米颗粒和微米棒构成的复合结构，在光催化降解罗丹明B方面表现出良好的催化活性。

摘要： 本发明公开了一步合成可见光响应的直接Z‑Scheme AgBr/β‑Ag2WO4光催化剂的方法。该光催化剂在微观上为纳米颗粒和微米棒构成的复合结构，在光催化降解罗丹明B方面表现出良好的催化活性。

摘要： 本发明属于纳米材料合成技术领域，利用简单快速的水热方法一步合成单晶纳米点构成介孔Co

摘要： 本发明公开了一种电场驱动型Z‑Scheme结构光催化反应器，属于光电催化反应器技术领域；包括反应器壳体、光催化反应组件、供电组件和光源；所述反应器壳体下部设置有进水口和进气口，上部设置有出水口，顶部设置有出气口；本发明基于光电催化体系和Z‑Scheme体系的启示，设计出了一种电场驱动型Z‑Scheme结构光催化反应器，利用该反应器可实现对二氧化碳的高效还原；本发明所提供的电场驱动型Z‑Scheme结构光催化反应器可实现反应器组件的模块化堆叠，同时，光源可进行多种选择，实现在光电催化领域更广泛的应用；该反应器总体结构简单、生产成本低廉，具有很高的实用价值和应用前景，易于推广使用。

摘要： 本公开提供一种Scheme请求校验方法、装置及设备，其中，Scheme请求校验方法包括：获取第一应用对第二应用的Scheme请求；生成第一随机数，并通过第一标识对所述第一随机数进行加密，得到第一加密信息，其中，所述第一标识作为密钥，所述第一标识与所述终端以及所述第一应用对应；对所述第一加密信息以及所述第一应用的信息进行加密，得到第二加密信息；将所述Scheme请求以及所述第二加密信息发送给所述第二应用，以使所述第二应用基于所述第二加密信息对所述Scheme请求进行校验；接收来自所述第二应用的所述Scheme请求的响应消息，所述响应消息中携带有所述第一加密信息；对所述第一加密信息进行解密，得到第一解密结果，根据所述第一解密结果确定Scheme请求结果。

摘要： 本发明实施例提供一种App Scheme可用性验证方法及系统，首先获取H5文档，所述H5文档中包含有待验证App Scheme集合中待验证App Scheme的功能信息以及关联的目标App；然后若接收到任一待验证App Scheme的验证指令，则基于所述H5文档中包含的待验证App Scheme的功能信息以及与所述功能信息关联的目标App，对所述任一待验证App Scheme在客户端上的可用性进行验证。可以通过H5文档，简单高效的在客户端上检测App Scheme的可用性，并不需要研发、测试和产品等人员进行比较复杂的配置，可以提高验证效率，节约验证工作耗费的时间和人力。

摘要： 本发明涉及一种羟基氧化铁/硫化镉纳米带直接Z‑scheme光催化剂的制备方法，该方法利用水热法和共沉淀法，在硫化镉纳米带表面负载羟基氧化铁纳米颗粒，构建直接Z‑scheme光催化剂，实现了硫化镉的光生空穴与羟基氧化铁的光生电子复合，硫化镉上剩余的光生电子可以充分产氢，羟基氧化铁上剩余的光生空穴可以充分发生氧化反应，实现整个光催化反应中两个方向的反应达到同步，进而提升光催化效率，实现高效光催化分解水产氢。

摘要： 本发明公开了一种新型Z‑scheme声催化剂及其制备方法和应用。采用的技术方案是：用溶胶‑凝胶和水热法合成Pd‑BaZrO

摘要： 本发明公开了一种Z‑scheme型铯铅溴(CsPbBr3)钙钛矿量子点和钨酸铋(Bi2WO6)纳米片复合物的制备方法，属于复合材料技术领域，一种CsPbBr3钙钛矿量子点和Bi2WO6纳米片复合物的制备方法，包括以下过程：将Bi2WO6纳米片固体超声溶解在乙酸乙酯中，得到溶液A；将CsPbBr3量子点溶液加到溶液A中，形成混合液A；将混合液A在超声机中与Bi2WO6纳米片超声，该设计不仅能够促进光生电子‑空穴的分离，还能够保持CsPbBr3导带电子较高的还原驱动力，提高了CsPbBr3的稳定性和催化活性，且本发明的CsPbBr3量子点和Bi2WO6纳米片通过Bi‑Br键连接形成的复合物提高了钙钛矿的稳定性和催化活性，该方法还具有制备工艺简单、价格低廉、技术路线可推广等诸多优势。