摘要：catalyst半导体迅速扩充了已获得专利的Quad-Mode分数电荷泵LED驱动产品线,新增两款支持高分辨率亮度调节的器件,为新型便携式产品提供高达32级亮度调节的LCD背光控制。在手机,数码相机和其它手持设备领域,设计者们一直在努力平衡系统功能和电池工作时间之间的矛盾,catalyst新推出的CAT3647和CAT3648芯片是解决这一问题的最佳方案。

摘要：模拟、混合信号及非易失性内存供货商catalyst半导体公司宣布其独特的降压交换式稳压器架构获得专利，这一专利可应用于驱动高亮度LED组的降压稳压器中。专利题目为“使用降压稳压器控制LED偏流”（专利号：7，323，828），此一专利是为简化新兴的家用、商用和汽车照明领域的高亮度LED设计而研发。

摘要：模拟、混合信号及非易失型内存供货商catalyst半导体公司日前宣布．该公司将新增两款可支持高分辨率亮度调节的新器件，以便为新型便携式产品提供高达32级亮度调节的LCD背光控制。在手机，数码相机和其它手持设备领域．设计者们一直在努力平衡系统功能和电池工作时间之间的矛盾，

摘要：catalyst半导体公司宣布为其广受欢迎的可编程数字电位器CAT5114增加一种8引脚2mm×25mm的TDFN封装，这是目前世界上尺寸最小的非易失性数字电位器。如今，在越来越小的便携式设备中使用的仍然是封装尺寸较大的数字电位计，CataIyst的超薄超小尺寸新产品可以帮助设计人员进一步压缩板面空间。

摘要：模拟、混合信号器件及非易失性存储器的先进供货商catalyst半导体公司宣布新增加了一款32抽头的数字可编程电位器（DPP）．将该产品系列扩充至35种。CAT5126通过简单的2线串行接口提供对滑动抽头的一次性编程功能，帮助设计人员在上电后设置好滑动抽头位置并关闭编程接口．防止重复修改滑动抽头位置。同时，CAT5126也具备更为灵活的模式——上电后设置好滑动抽头但不关闭编程接口。

摘要：模拟，混合信号，非易失性内存器件半导体供货商catalyst日前推出四款电压监控器芯片，以便为设计人员提供工业标准性能。该产品适用于监控微处理器、微控制器、ASIC器件以及其它系统处理器的供电电压。CAT853、CAT863、CAT859和CAT869扩充了catalyst的具备工业标准的电压监控器家族，提供更为广泛的引脚组合，可以更好地满足嵌入式控制市场的差异化应用需求。

摘要：思科公司推出的Cisco catalyst 3560系列交换机是一种采用快速以太网配置的固定配置、企业级、IEEE 802．3af和思科预标准以太网电源(PoE)的交换机，提供了可用性、安全性和服务质量(QoS)功能．改进了网络运营。

摘要：(Imido)vanadium(V)-alkylidene complexes of type V(CHSiMe3)(NR)(OR?)(PMe3)2 [R = Ad, C6H5, 2,6-Me2C6H3, 2,6-Cl2C6H3;R?= 2,6-Me2C6H3, 2,6-i Pr2C6H3, 2,6-F2C6H3, C6F5, C6Cl5] exhibited from moderate to remarkable catalytic activities for ringopening metathesis polymerization(ROMP) of norbornene(NBE). The catalytic activities were affected by the ligand substituents, and V(CHSiMe3)(N-2,6-Cl2C6H3)(OC6X5)(PMe3)2(X = F, Cl) demonstrated the exceptionally high catalytic activities for ROMP of *** complexes polymerized cycloheptene(CHPE) and cis-cyclooctene(COE), and ROMP of COE by the OC6 Cl5 analogue proceeded in a living manner even at 80℃, and the activity increased with increasing the temperature up to 120 ℃. Highly active catalysts for ROMP of cyclic olefins(NBE, cyclopentene, and CHPE) can be generated in situ by premixing isolated V(CHSiMe3)(NC6F5)(O-2,6-iPr2C6H3)(PMe3)2 with 1.0 equiv. of C6F5OH or C6Cl5OH via immediate phenoxy exchange;the activity was affected by the kind of phenol added [TOF in the ROMPs of NBE: 4.62 × 10^4 min^–1(upon addition of C6F5OH) versus 37.3 min^–1(none)].

摘要：Qilu Petrochemical Company in order to synchronize the replacement of catalysts in the upflow reactor (UFR) and fixed-bed reactors and achieve the 1.5-year operating cycle of the residue hydrotreating unit has revamped the UFR and optimized catalysts grading. Commercial operation results have revealed that the series of catalysts for residue hydrotreating after optimized grading achieved an operating cycle of 1.5 years with the quality of hydrotreated oil products meeting the requirements for FCC feedstock.

摘要：The catalytic conversion of CO2 to CO via a reverse water gas shift(RWGS)reaction followed by well-established synthesis gas conversion technologies may provide a potential approach to convert CO2 to valuable chemicals and ***,this reaction is mildly endothermic and competed by a strongly exothermic CO2 methanation reaction at low ***,the improvement in the low-temperature activities and selectivity of the RWGS reaction is a key challenge for catalyst *** reviewed recent advances in the design strategies of supported metal catalysts for enhancing the activity of CO2 conversion and its selectivity to *** strategies include varying support,tuning metal–support interactions,adding reducible transition metal oxide promoters,forming bimetallic alloys,adding alkali metals,and enveloping metal *** advances suggest that enhancing CO2 adsorption and facilitating CO desorption are key factors to enhance CO2 conversion and CO *** short review may provide insights into future RWGS catalyst designs and optimization.