汽车钢圈轮辋外形智能化检测系统研制

介绍了容栅传感器的结构原理及计算机实时检测和控制技术,阐述了智能化汽车钢圈轮辋外形检测的设计思想、原理框图及技术指标,指出了该系统的潜在应用前景。     

大型河工模型智能化采集与控制系统

介绍了大型河工物理模型智能化采集与控制系统的开发要点,包括系统的功能、硬件设计、系统的采集与控制、软件设计以及开发工具等。运行情况证明,该系统在大型河工物理模型中应用具有可靠、高效、操作方便等特点。     

浅析豫南粳稻优质高产栽培策略

产量低、病虫害重、品质下降是豫南粳稻难以发展的直接原因.将粳稻置于高温、高湿的生态条件下栽培是其病虫害重、产量低、品质下降的根本原因.解决上述问题的唯一途径是推迟灌浆成熟期,将成熟期由目前的9月上旬推迟到10月中旬.对信阳市48年主要气候因子统计结果表明,推迟粳稻成熟期,有利于改善粳稻生长发育的生态条件,并能保证安全成熟.     

混凝土重力坝基岩中的软弱夹层问题

论述了软弱夹层的分类、勘查和试验研究，对混凝土重力坝基础深层抗滑稳定及抗滑安全度进行了分析说明。     

烟道灰浸出液和模拟液萃取锗工艺研究

研究了烷基膦酸萃以剂P507和喹啉类萃取剂N601协萃浸出液和模拟液中的锗离子,研究了基协萃动力学特性,并对萃合物的谱图进行分析,对其结构进行了推测。     

桥台支座布置方式对连续梁桥地震反应的影响

为了避免桥台的地震破坏,提出一种新型桥台支座布置方式,通过双向滑动支座、弹塑性挡块和拉压连接装置的联合作用来工作.以2座连续梁桥为例,通过新型桥台支座布置方式和传统桥台支座布置方式的对比研究,分析了挡块屈服力、桥台约束刚度对桥梁横向地震反应的影响.结果表明:对于传统桥台支座布置方式,桥台承受的地震力随着地震强度的增大而增加,存在地震破坏风险;对于新型桥台支座布置方式,可以通过调节挡块横向屈服力来控制桥台地震力,既可使桥台分担一部分结构地震惯性力,又可避免桥台破坏.进行抗震设计时,可以根据具体的桥梁和对应的地震动输入,选择合适的桥台挡块横向屈服力,以使整座桥梁的地震反应达到最优状态.     

分子电距矢量用于氯代苯类化合物毒性的预测

通过对18个氯苯类化合物的分子电距矢量（MEDV）与其分子毒性关系进行关联，建立多元线性回归方程：-lgIC50=3．3377＋3．2080v1＋1．1453v2—0．5353v3—0．0571v6＋0．3118v8，R为0．9420．随后采用留一法（LOO）交叉检验（CV）、内部模型验证法对其进行了验证，结果表明，该模型具有良好的稳定性和预测能力，在一定程度上阐明了氯苯类化合物与其分子电性距离矢量之间的关系．     

Effect of H2S concentration on the corrosion behavior of pipeline steel under the coexistence of H2S and CO2

The effect of H2S concentration on H2S/CO2 corrosion of API-X60 steel was studied by scanning electron microscopy, a weight-loss method, potentiodynamic polarization tests, and the electrochemical impedance spectroscopy technique. It is found that the cor-rosion process of the steel in an environment where H2S and CO2 coexist at different H2S concentrations is related to the morphological structure and stability of the corrosion product film. With the addition of a small amount of H2S, the size of the anode reaction region is de-creased due to constant adsorption and separation of more FeS sediment or more FeHS＋ions on the surface of the steel. Meanwhile, the dou-ble-layer capacitance is diminished with increasing anion adsorption capacity. Therefore, the corrosion process is inhibited. The general cor-rosion rate of the steel rapidly decreases after the addition of a small amount of H2S under the coexistence of H2S and CO2. With a further increase in H2S concentration, certain parts of the corrosion product film become loose and even fall off. Thus, the protection provided by the corrosion product film worsens, and the corrosion rate tends to increase.     

Identity-based blind signature from lattices

Blind signature allows a user to get a signature of a signer on an arbitrary message,and the verifier can convince that the signature is indeed signed by the signer without leaking any information about the message.This property is necessary when the user’s privacy needs protection,such as a bank bill,a trade secret,etc.As an alternative of public key infrastructure,the identity-based system can simplify the key management procedures in certificate-based public key systems.Inspired by the requirement of identity-based blind signature in the post quantum world,we research on identity-based blind signature based on hard lattice problems under the random Oracle model.We propose a construction built upon the blind signature by Rückert,and it is proved to be one-more unforgeable against selective identity and chosen message attacks(s ID-CMA)and unconditionally blind.The proposed scheme has 2 moves,and its security can be reduced to the small integer solution(SIS)problem.     

内配煤用量对某难选铁矿石压块直接还原焙烧的影响

针对某种低品位复杂难选铁矿石,研究原矿压块—直接还原—磨矿磁选工艺的影响因素和机理.将矿石破碎到粒径小于4mm后,加入一定量黏结剂C和内配煤压块,通过对压块、直接还原焙烧和磨矿磁选条件进行试验确定最佳工艺条件,采用X线衍射(XRD)和扫描电子显微镜(SEM)对原矿在不同内配煤用量下压块后直接还原反应机理进行研究.研究结果表明:在原矿直接还原反应中,不仅包括铁氧化物向金属铁的还原,而且存在低价铁氧化物与原矿中脉石之间的反应,生成了铁橄榄石和铁尖晶石.提高内配煤用量,有利于铁氧化物和铁橄榄石等的还原.内配煤用量较高时焙烧块中生成的金属铁晶粒出现明显地连接和长大,与脉石矿物边缘界限明显,从而其回收率较用量低时有明显升高.得到铁(晶)位为90.05％,回收率91.26％的直接还原铁产品.