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1. 发明授权

US6029498A Chromatographic column for microwave heating 有权
标题翻译：微波加热色谱柱
公开(公告)号：US6029498A
公开(公告)日：2000-02-29
申请号：US342368
申请日：1999-06-29
申请人： David L. Walters , Scott Gaisford
发明人： David L. Walters , Scott Gaisford
IPC分类号： G01N30/54 , G01N30/30 , G01N30/02
CPC分类号： G01N30/30
摘要： A chromatography column for microwave heating either incorporates microwave absorbing material into the column itself or positions the column adjacent to microwave absorbing material so that the column and the chromatography sample contained therein are heated by the microwave absorbing material via conduction or convection. For example, a microwave absorbing material (e.g., ferrite) can be fused into the inner silica layer or incorporated in an outer polymer layer of the column. Microwave absorbing material can also be incorporated into an external element (e.g., an outer tube, sleeve, or spool) positioned adjacent to the chromatography column. A layer of thermal insulation can be placed around the column to decrease the rate of heat loss. Optionally, a gap can be provided between the chromatography column and thermal insulation to further reduce heat loss during the heating cycle and to accelerate cooling at the end of the heating cycle by making it possible to ventilate the heated column. The chromatography column assembly can be protected from overheating by selecting a microwave absorbing material having a loss factor that decreases rapidly above a predetermined maximum temperature.
摘要翻译：用于微波加热的色谱柱将微波吸收材料结合入柱本身或将柱定位成与微波吸收材料相邻，使得柱和其中所含的色谱样品通过导电或对流被微波吸收材料加热。例如，可以将微波吸收材料（例如铁氧体）熔合到内部二氧化硅层中或并入该柱的外部聚合物层中。微波吸收材料也可以并入位于邻近色谱柱的外部元件（例如，外管，套管或线轴）中。可以在柱周围放置一层隔热层以降低热损失率。任选地，可以在色谱柱和热绝缘之间提供间隙，以进一步减少在加热循环期间的热损失，并且通过使得加热柱能够通风来加速加热循环结束时的冷却。可以通过选择具有在预定最大温度以上迅速降低的损耗因子的微波吸收材料来保护色谱柱组件免于过热。

2. 发明授权

US06514316B1 System for improving the maximum operating temperature and lifetime of chromatographic columns 失效
标题翻译：提高色谱柱最大工作温度和使用寿命的系统
公开(公告)号：US06514316B1
公开(公告)日：2003-02-04
申请号：US09938140
申请日：2001-08-22
申请人： Gregory Scott Gaisford , David L. Walters
发明人： Gregory Scott Gaisford , David L. Walters
IPC分类号： B01D1508
CPC分类号： G01N30/30 , G01N2030/3007 , G01N2030/3084
摘要： Capillary column oxidation in gas chromatography systems, particularly of polyimide clad columns, is a major cause of column failure and it limits the maximum temperature at which columns can be used. A gas chromatography column oven system is described which utilizes inert gas to substantially eliminate column oxidation thereby increasing column thermal stability. These column oven systems thus increase column lifetime and maximum operating temperature. The column oven systems comprise pneumatically sealed oven enclosures with sealed access ports, sealed sample line ports, and inlet and outlet gas ports to which are connected an inert gas supply and an exhaust gas control system respectively.
摘要翻译：气相色谱系统中的毛细管柱氧化，特别是聚酰亚胺包覆柱，是柱失效的主要原因，它限制了可以使用色谱柱的最高温度。描述了使用惰性气体基本上消除柱氧化从而增加柱热稳定性的气相色谱柱蒸馏系统。这些立柱炉系统因此增加了色谱柱寿命和最大工作温度。柱式炉系统包括具有密封进入端口，密封样品管路端口以及分别与惰性气体供应和排气控制系统相连接的入口和出口气体端口的气密的烘箱外壳。

3. 发明授权

US6093921A Microwave heating apparatus for gas chromatographic columns 失效
标题翻译：气相色谱柱微波加热装置
公开(公告)号：US6093921A
公开(公告)日：2000-07-25
申请号：US262230
申请日：1999-03-04
申请人： Scott Gaisford , David L. Walters
发明人： Scott Gaisford , David L. Walters
IPC分类号： G01N30/02 , G01N30/30 , H05B6/72 , H05B6/74 , H05B6/80
CPC分类号： H05B6/6402 , G01N30/30 , H05B6/70 , H05B6/705 , H05B6/80 , G01N2030/025 , G01N2030/3015 , G01N2030/3038 , G01N2030/3046
摘要： A microwave heating apparatus is used for heating a chromatographic column assembly containing a microwave absorbing material. The microwave heating apparatus includes an antenna transmitting a microwave signal and a resonant cavity containing the chromatographic column assembly and the antenna. The chromatographic column assembly extends relative to predetermined electromagnetic field strength contours within the resonant cavity to provide a predetermined heating profile along the length of the chromatographic column assembly. For example, a single-mode chromatographic column microwave oven can be used to heat a coiled chromatography column to a desired temperature gradient along its length. Oven design embodiments utilizing coaxial transmission line structures, coaxial resonators, and cylindrical resonators are described. To control the electromagnetic field gradient in the axial direction, the oven designs provide for varying some part of the oven geometry in the axial direction. For best operation, vacuum conditions should be established within the oven during heating cycles.
摘要翻译：微波加热装置用于加热含有微波吸收材料的色谱柱组件。微波加热装置包括发射微波信号的天线和包含色谱柱组件和天线的谐振腔。色谱柱组件相对于谐振腔内的预定电磁场强度轮廓延伸，以沿着色谱柱组件的长度提供预定的加热曲线。例如，单模式色谱柱微波炉可用于将卷曲色谱柱加热至其长度所需的温度梯度。描述了利用同轴传输线结构，同轴谐振器和圆柱形谐振器的烘箱设计实施例。为了控制轴向的电磁场梯度，烘箱设计提供了沿轴向改变烤箱几何形状的某些部分。为了最佳操作，在加热循环期间应在烘箱内建立真空条件。

4. 发明授权

US06316759B2 Microwave heating apparatus for gas chromatographic columns 失效
标题翻译：气相色谱柱微波加热装置
公开(公告)号：US06316759B2
公开(公告)日：2001-11-13
申请号：US09729134
申请日：2000-12-01
申请人： Gregory Scott Gaisford , David L. Walters
发明人： Gregory Scott Gaisford , David L. Walters
IPC分类号： H05B680
CPC分类号： H05B6/70 , G01N30/30 , G01N2030/025 , G01N2030/3015 , G01N2030/3038 , G01N2030/3046 , H05B6/6402 , H05B6/705 , H05B6/80
摘要： A microwave heating apparatus is used for heating a chromatographic column assembly containing a microwave absorbing material. The microwave heating apparatus includes an antenna transmitting a microwave signal and a resonant cavity containing the chromatographic column assembly. The chromatographic column assembly extends relative to predetermined electromagnetic field strength contours within the resonant cavity to provide a predetermined heating profile along the length of the chromatographic column assembly. For example, a single-mode chromatographic column microwave oven can be used to heat a coiled chromatography column to a desired temperature gradient along its length. Oven design embodiments utilizing coaxial transmission line structures, coaxial resonators, and cylindrical resonators are described. Oven designs are provided to achieve more suitable oven size for fixed operating frequencies. Apparatuses for impedance matching an oven to a microwave source are described. Finally, designs providing for rapid column cool down and improved control of the column thermal environment are described.
摘要翻译：微波加热装置用于加热含有微波吸收材料的色谱柱组件。微波加热装置包括发射微波信号的天线和包含色谱柱组件的谐振腔。色谱柱组件相对于谐振腔内的预定电磁场强度轮廓延伸，以沿着色谱柱组件的长度提供预定的加热曲线。例如，单模式色谱柱微波炉可用于将卷曲色谱柱加热至其长度所需的温度梯度。描述了利用同轴传输线结构，同轴谐振器和圆柱形谐振器的烘箱设计实施例。提供烤箱设计，以实现固定工作频率的更适合的烤箱尺寸。描述了将烘箱与微波源进行阻抗匹配的装置。最后，描述了提供快速柱冷却和改进柱热环境控制的设计。

5. 发明授权

US06157015A Microwave heating apparatus for gas chromatographic columns 有权
公开(公告)号：US06157015A
公开(公告)日：2000-12-05
申请号：US359879
申请日：1999-07-23
申请人： Scott Gaisford , David L. Walters
发明人： Scott Gaisford , David L. Walters
IPC分类号： G01N30/02 , G01N30/30 , H05B6/72 , H05B6/74 , H05B6/80
CPC分类号： H05B6/6402 , G01N30/30 , H05B6/70 , H05B6/705 , H05B6/80 , G01N2030/025 , G01N2030/3015 , G01N2030/3038 , G01N2030/3046
摘要： A microwave heating apparatus is used for heating a chromatographic column assembly containing a microwave absorbing material. The microwave heating apparatus includes an antenna transmitting a microwave signal and a resonant cavity containing the chromatographic column assembly and the antenna. The chromatographic column assembly extends relative to predetermined electromagnetic field strength contours within the resonant cavity to provide a predetermined heating profile along the length of the chromatographic column assembly. For example, a single-mode chromatographic column microwave oven can be used to heat a coiled chromatography column to a desired temperature gradient along its length. Oven design embodiments utilizing coaxial transmission line structures, coaxial resonators, and cylindrical resonators are described. To control the electromagnetic field gradient in the axial direction, the oven designs provide for varying some part of the oven geometry in the axial direction. For best operation, vacuum conditions should be established within the oven during heating cycles.

6. 发明授权

US5939614A Chromatographic column for microwave heating 失效
公开(公告)号：US5939614A
公开(公告)日：1999-08-17
申请号：US108297
申请日：1998-07-01
申请人： David L. Walters , Scott Gaisford
发明人： David L. Walters , Scott Gaisford
IPC分类号： G01N30/54 , G01N30/30 , G01N30/02
CPC分类号： G01N30/30
摘要： A chromatography column for microwave heating either incorporates microwave absorbing material into the column itself or positions the column adjacent to microwave absorbing material so that the column and the chromatography sample contained therein are heated by the microwave absorbing material via conduction or convection. For example, a microwave absorbing material (e.g., ferrite) can be fused into the inner silica layer or incorporated in an outer polymer layer of the column. Microwave absorbing material can also be incorporated into an external element (e.g., an outer tube, sleeve, or spool) positioned adjacent to the chromatography column. A layer of thermal insulation can be placed around the column to decrease the rate of heat loss. Optionally, a gap can be provided between the chromatography column and thermal insulation to further reduce heat loss during the heating cycle and to accelerate cooling at the end of the heating cycle by making it possible to ventilate the heated column. The chromatography column assembly can be protected from overheating by selecting a microwave absorbing material having a loss factor that decreases rapidly above a predetermined maximum temperature.

7. 发明授权

US5090665A Deploying cables 失效
标题翻译：配电线
公开(公告)号：US5090665A
公开(公告)日：1992-02-25
申请号：US594389
申请日：1990-10-05
申请人： David L. Walters , Martin Healy , Ernest C. Marlow , David F. Harrison
发明人： David L. Walters , Martin Healy , Ernest C. Marlow , David F. Harrison
IPC分类号： G01L5/04 , G01L5/10 , G02B6/44
CPC分类号： G02B6/4464 , G01L5/047 , G01L5/102 , G01L5/105
摘要： A method of installing a cable, particularly but not exclusively in a duct filled with flowing liquid, wherein, as the cable is deployed, the strain in the cable is determined by sending a signal down the cable and receiving a signal back from the cable. The speed of deployment is adjusted according to the strain detected. Preferably the system is applied to optical cables, and a radio frequency signal is modulated on an optical carrier. optical connection to the cable on the rotating drum is made via an optical slip-ring. The front end of the cable has a silvered end termination for reflecting the modulated signal back along the fibre to be detected by an optical receiver, and there is a vector voltmeter for determining the phased difference between the signals to thus determine the strain in the cable.

8. 发明授权

US07467324B1 Method and apparatus for continuing to provide processing on disk outages 有权
标题翻译：用于继续提供磁盘中断处理的方法和装置
公开(公告)号：US07467324B1
公开(公告)日：2008-12-16
申请号：US11006015
申请日：2004-12-06
申请人： Bhavesh P. Davda , John F. Kelly , David L. Walters
发明人： Bhavesh P. Davda , John F. Kelly , David L. Walters
IPC分类号： G06F11/00
CPC分类号： G06F11/1482 , G06F11/0715 , G06F11/0727 , G06F11/0757 , G06F11/076
摘要： A system and method for continuing to provide processing in a processing system is disclosed. In one embodiment, a processing system is provided comprising a secondary storage device, a memory, a processor, an operating system, and a plurality of processes stored in the secondary data storage device. The plurality of processes comprise a first group of processes and a second group of processes. The first group of processes is adapted to be swapped between the secondary data storage device and the memory for execution. The second group of processes is adapted to be locked into the memory of the processing system during operation. The request to lock and unlock a process is affected by a watchdog process unrelated to the process being locked. Configuration information for the watchdog process identifies the processes in the first and/or second groups.
摘要翻译：公开了一种在处理系统中继续提供处理的系统和方法。在一个实施例中，提供处理系统，其包括存储在次要数据存储装置中的辅助存储装置，存储器，处理器，操作系统和多个进程。多个过程包括第一组过程和第二组过程。第一组处理适于在次级数据存储设备和存储器之间进行交换以供执行。第二组处理适于在操作期间被锁定到处理系统的存储器中。锁定和解锁进程的请求受到与被锁定进程无关的看门狗进程的影响。看门狗进程的配置信息识别第一和/或第二组中的进程。

9. 发明授权

US07929974B1 Method and system for managing carrier frequencies in a wireless communication network 有权
标题翻译：用于管理无线通信网络中的载波频率的方法和系统
公开(公告)号：US07929974B1
公开(公告)日：2011-04-19
申请号：US12034428
申请日：2008-02-20
申请人： David L. Walters
发明人： David L. Walters
IPC分类号： H04W72/00
CPC分类号： H04W28/16 , H04W28/22 , H04W72/0413 , H04W72/042 , H04W72/12
摘要： A method and system are provided for managing a radio access network (RAN). The RAN defines one or more wireless coverage areas (WCAs) to serve one or more mobile nodes (MNs). Each MN requests data from the RAN at a requested forward-link data rate and the RAN transmits data to the MN at an actual forward-link data rate.For each WCA, an average of the actual forward-link data rates, an average of the requested forward-link data rates, and an RF-link utilization is determined. The RF-link utilization of the WCA is determined by dividing the average actual forward-link data rate of the WCA by the average requested forward-link data rate of the WCA. The RAN is managed by scheduling the addition of one or more carrier frequencies to one or more WCAs, where the scheduling is based on the RF-link utilization of the WCAs.
摘要翻译：提供了一种用于管理无线电接入网络（RAN）的方法和系统。 RAN定义一个或多个无线覆盖区域（WCAs）以服务于一个或多个移动节点（MN）。每个MN以所请求的前向链路数据速率从RAN请求数据，并且RAN以实际的前向链路数据速率向MN发送数据。对于每个WCA，确定实际的前向链路数据速率的平均值，所请求的前向链路数据速率的平均值和RF链路利用率。通过将WCA的平均实际前向链路数据速率除以WCA的平均所请求的前向链路数据速率来确定WCA的RF链路利用率。通过调度对一个或多个WCA的一个或多个载波频率的添加来管理RAN，其中调度基于WCA的RF链路利用率。

10. 发明授权

US5160972A Apparatus for controlling deployment of a cable 失效
标题翻译：用于控制电缆部署的装置
公开(公告)号：US5160972A
公开(公告)日：1992-11-03
申请号：US756580
申请日：1991-09-09
申请人： David L. Walters , Martin Healy , Ernest C. Marlow , David F. Harrison
发明人： David L. Walters , Martin Healy , Ernest C. Marlow , David F. Harrison
IPC分类号： G01L5/04 , G01L5/10 , G02B6/44
CPC分类号： G02B6/4464 , G01L5/047 , G01L5/102 , G01L5/105
摘要： A method of installing a cable, particularly but not exclusively in a duct filled with flowing liquid, wherein, as the cable is deployed, the strain in the cable is determined by sending a signal down the cable and receiving a signal back from the cable. The speed of deployment is adjusted according to the strain detected. Preferably the system is applied to optical cables, and a radio frequency signal is modulated on an optical carrier. Optical connection to the cable on the rotating drum is made via an optical slip-ring. The front end of the cable has a silvered end termination for reflecting the modulated signal back along the fibre to be detected by an optical receiver, and there is a vector voltmeter for determining the phased difference between the signals to thus determine the strain in the cable.
摘要翻译：一种安装电缆的方法，特别但不排他地安装在充满流动液体的管道中，其中，当电缆被部署时，电缆中的应变通过沿着电缆发送信号并从电缆接收信号来确定。根据检测到的应变调整部署速度。优选地，将系统应用于光缆，并且在光学载体上调制射频信号。与旋转鼓上的电缆的光学连接是通过光滑环制成的。电缆的前端具有镀银末端，用于将光调制信号反射回光纤以被光接收器检测，并且存在矢量电压表，用于确定信号之间的相位差，从而确定电缆中的应变。

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