Flow metering

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  • Hen phế quản, nhất là hen trẻ em ngày nay là một vấn đề đáng quan tâm của ngành y tế của các nước trên thế giới vì có khuynh hướng gia tăng cả về tần suất mắc bệnh cũng như độ nặng. Để có thể chẩn đoán, đánh giá độ nặng và diễn biến của hen một cách khách quan, dễ thực hiện tại bệnh viện cũng như theo dõi tại nhà, người ta đã sử dụng máy đo lưu lượng đỉnh (Peak Flow Meter- PFM)[3,4,5]. ...

    pdf14p meomeongon 06-01-2012 26 3   Download

  • The SPIRAX SARCO Steam Meter consists of four basic parts. 1. M111 Transducer. This is installed in the steam line at the point where the steam flow is to be measured. (See TIS 8.002). It is supplied complete with a 2m length of 8 core heat resistant cable for connection to the M322 Conditioning Unit. 2. EL2600 Pressure Transmitter. This provides a 4-20 mA analogue signal to the M322 Conditioning Unit proportional to line pressure for superheated steam applications (see TIS 8.023). 3. M322 Conditioning Unit....

    pdf52p chaucogido 30-01-2010 107 31   Download

  • Ours is a very young profession: when the first edition of the Instrument Engineers’ Handbook (IEH) came out, Marks’ Mechanical Engineers’ Handbook was in its fifth edition, and Perry’s Chemical Engineers’ Handbook was in its sixth! Now, as we are starting to work on the fourth edition of the IEH, we are already in a new millenium. But while our profession is young, we are also unique and special.

    pdf0p camchuong_1 04-12-2012 209 26   Download

  • Automatic sampler (optional)—The sampler must incorporate glass sample containers for the collection of a minimum of 250 mL of sample. Sample containers must be kept refrigerated at 4°C and protected from light during compositing. If the sampler uses a peristaltic pump, a minimum length of compressible silicone rubber tubing may be used. Before use, however, the compressible tubing should be thoroughly rinsed with methanol, followed by repeated rinsings with distilled water to minimize the potential for contamination of the sample.

    pdf0p cao_can 02-01-2013 26 7   Download

  • Thuốc được dùng cho bệnh suyễn có thể chia làm 2 loại: thuốc dùng đường toàn thân (uống, chích thịt, chích gân) và đưa trực tiếp vào phổi. Để đưa thuốc trực tiếp vào phổi phải thông qua một số dụng cụ như ống hít, buồng hít, máy phun khí dung.

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  • Automatic sampler (optional)—The sampler must incorporate glass sample containers for the collection of a minimum of 250 mL of sample. Sample containers must be kept refrigerated at 4°C and protected from light during compositing. If the sampler uses a peristaltic pump, a minimum length of compressible silicone rubber tubing may be used. Before use, however, the compressible tubing should be thoroughly rinsed with methanol, followed by repeated rinsings with distilled water to minimize the potential for contamination of the sample.

    pdf19p cao_can 02-01-2013 24 2   Download

  • To validate the event mean concentrations, flow data was obtained by a flow meter that measured gallons used in the entire boat wash area. The flow meter allowed use to accurately determine the amount of wash water flowing into the Modular Wetlands Device. The flow meter was not installed until approximately July 3 so no flow data was available prior to the installation. Electronic readings were taken for pH, TDS, Conductivity, Temperature, Oxidation Reduction Potential (ORP), and Turbidity.

    pdf5p tainhacmienphi 19-02-2013 9 2   Download

  • Both shaping and policing mechanisms are used in a network to control the rate at which traffic is admitted into the network. Both mechanisms use classification, so they can differentiate traffic. They also use metering to measure the rate of traffic and compare it to the configured shaping or policing polic y. The difference between shaping and policing can be described in terms of their rate-limiting implementation: n Shaping meters the traffic rate and delays excessive traffic so that it stays within the desired rate limit.

    pdf1p trungha 28-08-2009 75 16   Download

  • Almost all experts are in agreement - although we will see an improvement in metering and control of the power flow, Power Quality will suffer. This book will give an overview of how power quality might impact our lives today and tomorrow, introduce new ways to monitor power quality and inform us about interesting possibilities to mitigate power quality problems.

    pdf374p cucdai_1 20-10-2012 51 15   Download

  • The confluence of market demand for greatly improved compact power sources for portable electronics with the rapidly expanding capability of micromachining technology has made feasible the development of gas turbines in the millimeter-size range. With airfoil spans measured in 100’s of microns rather than meters, these “microengines” have about 1 millionth the air flow of large gas turbines and thus should produce about 1 millionth the power, 10-100 W.

    pdf28p longmontran 14-01-2010 95 11   Download

  • Physical units can be specific to the kind of resource recorded (tonnes, cubic meters, hectares, number of units) or common to a range of resources. In this case, a unit-equivalent needs to be found. For example, material flow accounts which are currently the main basis for resource-efficiency analysis record 'everything' in tonnes. Another solution is to use carbon or energy unit-equivalents, as in UNFCCC reporting. The Ecological Footprint Accounts propose surface area as a general unit-equivalent. These solutions are obviously incomplete (e.g.

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  • Mixed layers grew to depths of 2,500 to 4,000 meters, with a rapid period of growth beginning shortly before noon and lasting for several hours. Significant differences between the mixed-layer temperatures in the basin and outside the basin were observed. Data analyses and models provide evidence that the circulations are highly complex and that relatively weak upper-level synoptic systems had an impact on the local and regional thermally driven flows in the area.

    pdf16p doipassword 01-02-2013 14 3   Download

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