南堡油田催生曹妃甸新型能源城

5月18日，在河北廊坊举办的东北亚暨环渤海商务节上，曹妃甸工业区以独立的形式出现在展会，巨大的现代工业发展的循环经济示意模型吸引着参观者的目光。中国石油刚刚宣布发现的10亿吨大油田——南堡油田就在曹妃甸这一区域。     

神奇的维生素C

一般来讲,人体缺乏维生素C,就会使成胶物质减少,结缔组织形成不良,伤口不易愈合,长骨骨骺与骨干稀疏,关节肿胀及毛囊角化,齿龈发炎出血,牙齿松动等,维生素C缺乏又使毛细血管管壁脆性增加,从而引起全身各部位布满出血点或易于出血。简言之,饮食中缺乏维生素C,人体容易患坏血病。 维生素C不仅能防治坏血病,而且还能防治感冒。     

MAJ系列煤矿通风综合监控柜的研制

介绍了 MAJ系列煤矿通风综合监控柜的研制过程 ,对煤炭行业的科学化管理有较高的使用价值 ,值得在煤矿推广使用。     

一种用于3.3Gbps低功耗高速互连的连续时间自适应模拟均衡器*

设计了适用于多种高速通信指标(USB2.0, PCI-E,Rapid IO)的CMOS模拟均器。通过合并低频和高频支路以降低两个支路的延迟效应,同时均衡滤波器具有比较大的输入阻抗,这有利于通过级联方式来进一步提高高频增益。本文所实现的电路结构在25dB的PCB线路衰减条件下,能够均衡频率范围从1Gbps到3.3Gbps的信号。偏置电路采用复制电路技术,有利于方便的调整主要工作模块的直流工作点。为了抑制前级输出共模对后级电路的影响,在信号的输入端引入了交流耦合。该芯片在0.18um 1P6M工艺下进行了流片验证,整体芯片面积为0.6 x 0.57 mm². 测试结果显示,该模拟均衡器能够在25dB FR4 PCB信道衰减下,对速率为3.3Gbps的信号实现自适应均衡,整体功耗大约为23.4mw.     

A low power CMOS 3.3 Gbps continuous-time adaptive equalizer for serial link

This paper describes using a high-speed continuous-time analog adaptive equalizer as the front-end of a receiver for a high-speed serial interface,which is compliant with many serial communication specifications such as USB2.0,PCI-E2.0 and Rapid 10.The low and high frequency loops are merged to decrease the effect of delay between the two paths,in addition,the infinite input impedance facilitates the cascade stages in order to improve the high frequency boosting gain.The implemented circuit architecture could facilitate the wide frequency range from 1 to 3.3 Gbps with different length FR4-PCB traces,which brings as much as 25 dB loss.The replica control circuits are injected to provide a convenient way to regulate common-mode voltage for full differential operation.In addition,AC coupling is adopted to suppress the common input from the forward stage.A prototype chip was fabricated in 0.18-μm 1P6M mixed-signal CMOS technology.The actual area is 0.6×0.57 mm~2 and the analog equalizer operates up to 3.3 Gbps over FR4-PCB trace with 25 dB loss.The overall power dissipation is approximately 23.4 mW.     

草莓干的制作技术

草莓干的制作技术朱春峰，冯新策，赵建中草莓营养物质含量丰富，每１００克草莓果含糖５～１２克、蛋白质０．４～０．６克、无机盐０．６克、果酸０．６～１．６克、粗纤维１．４克、胡萝卜素０．０１毫克，还含有铁、磷、钙、谷氨酸、核黄素、维生素Ｃ和１４种人体所需...     

一种应用于串行链路的5Gb/s低功耗电流模预加重发送器

A multi-standard compatible transmitter with pre-emphasis for high speed serial links is presented. Based on the comparison between voltage mode(VM) and current mode(CM) output driver architectures,a low power CM output driver with reverse scaling and bias current filtering technique is proposed.A 2-tap pre-emphasis filter is used to reduce the intersymbol interference caused by the low-pass channel,and a high speed,low power combined serializer is implemented to convert 10 bit parallel data into a serial data stream.The whole transmitter is fabricated in 65 nm 1.2 V/2.5 V CMOS technology.It provides an eye height greater than 800 mV for data rates of both 2.5 Gb/s and 5 Gb/s.The output root mean square jitter of the transmitter at 5 Gb/s is only 9.94 ps without pre-emphasis.The transmitter consumes 41.2 mA at 5 Gb/s and occupies only 240×140μm~2.     

用苹果皮、芯制造饮料初探

用苹果皮、芯制造饮料初探李春峰，赵建中，冯新策通常用苹果制造饮料，必须先削皮去芯，仅用果肉。但这些果皮，果芯还连着不少果肉，去掉的部分占全部果实的２０～３０％，这即是一种很大浪费，又污染环境。因此，对废弃物重新利用，变废为宝，很是必要。本文所谈的果汁...     

阳城县冶镁白云岩矿资源开发利用

阳城县冶镁白云岩矿主要分布于阳城县南部,矿床赋存于寒武系上统-奥陶系下统三山子组,矿石主要类型为中细—粗晶白云岩和含燧石白云岩,中细晶白云岩矿石质量较好可满足提炼金属镁用矿石一般工业要求,为阳城县境内最好的提炼金属镁用矿石。青岛地恩地集团已在阳城县吉甲调查区内选定了矿山,取得了矿产资源采矿权,为集团在金属镁产品的开发利用上提供了资源保障。     

阳城县陶瓷粘土矿地质特征及开发利用

阳城县陶瓷粘土矿赋存在二叠系下石盒子组、山西组和石炭系太原组地层中.矿层为泥岩、页岩、粉砂岩、细砂岩.用于生产内外墙砖、地面砖、日用陶瓷等.