Portable ultrasound devices are imaging devices that utilize echo-enhanced ultrasound waves to aid in medical diagnosis.

关键词：便携式超声波设备；超声波设备；便携设备

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Electric dryers offer a faster drying cycle compared to outdoor drying, which involves drying clothes on the clotheslines. In order to meet the growing needs of consumers, vendors in the electric dryers market are coming up with various product innovations. Some of these innovations include enhancement in technology, improvement in materials used, and wider distribution networks.

关键词：电动机；户外干燥；创新产品；增强技术；分销网络

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Magnetic field imaging using nitrogen-vacancy (NV) centers in diamond has a number of compelling life sciences applications, owing to useful characteristics such as high sensitivity down to nanometer-scale resolution, inherent biocompatibility, no need for electrical sensor contact, and highly- parallel detection of many pixels simultaneously. Quantum Diamond Technologies Inc. (QTDI) has focused primarily in Phase I on one target application and modality: high-throughput, high-sensitivity detection of rare cells and biomarkers. QDTI made significant progress toward this goal in the First Quarter, as reported here.

关键词：磁场；钻石；高分辨率；高灵敏度

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This project was an initial effort to investigate the feasibility of an instrument combining real-time atmospheric particle composition measurements using an ATOFMS (Atmospheric Time-Of-Flight Mass Spectrometer) such as those performed by Prathers group at the University of California, San Diego (UCSD) with multi-wavelength scattering measurements of the type investigated by Sorensen et al., of Kansas State University (KSU). In this Phase I effort we proposed to investigate near-angle scattering and the possibility of integration of a multi-wavelength scattering instrument into the UCSD ATOFMS. After an initial optical design and calculations, we discovered issues with the theory of measurement and with mechanical integration. Evidence emerged that the method of multi-wavelength scattering is only efficacious for spherical particles, while most atmospheric particles are non-spherical fractal aggregates. We also determined that the integration of the detector into existing ATOFMS instruments would be severely limited by volume constraints, and additional volume would require prohibitive additional pumping compared with the existing ATOFMS systems. Based on this evidence, we decided not to pursue a Phase II effort.

关键词：大气；空气治理；空气污染

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This report is a collection of reliability and maintenance data on several types of radiation protection instrumentation. Some radiation detectors are used for personnel safety; others are used for environmental stewardship. Six types of instruments are addressed in this report. These are: continuous air monitors, tritium room air monitors, facility vent stack monitors, tritium bubbler monitors, tritium in effluent water monitors, and general purpose radiation survey meters. Literature searches, operating experience data, and occurrence reports were used to identify failure modes and to estimate quantitative failure rates for several general types of radiation protection instruments. Likewise, data on instrument repair has been found when possible and used to estimate the mean time to repair. These data can be useful for facility safety assessment, personnel safety assessment, environment assessment, and for equipment and labor planning purposes.

关键词：大气；大气污染；空气健康

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Thermoluminescence reader is an important tool and a requisite for a researcher to study and characterize Thermoluminescence (TL) materials in different forms. Requirement for a versatile PC Controlled TL Reader has been felt for quite some time globally. Nucleonix Systems, Hyderabad, India, have developed a PC Controlled TL Reader by integrating complete electronics hardware circuits (comprising of Power Electronics, Low/High voltage Supplies, Temperature Controller, Micro Controller based data acquisition circuits having serial counter, ADC, DAC, EEPROM, PMT, PMT housing, sample heating system, drawer assembly, etc.) in a single enclosure. The system also integrated with software to calculate the activation energy (E), frequency factor (S) and order of kinetics '1' for the prominent glow peaks using different equations. This Integral TL Reader unit gets connected to the Personal Computer System through serial port RS232C/USB port. The user interface to the system is through front-end VB software defined Graphics User Interface (GUI). The system also contains some of the software features like glow curve acquisition, analysis, filing, printing, plotting, overlapping, maker data reporting, etc. Additionally, system facilitates single/two/three plateau heating with variable heating rates. The primary objective of this development is to bring out versatile TL instrumentation system and also to make it affordable to many of the researchers in the Universities and other areas, including Radio-therapist, Medical Physicists in Cancer Hospitals. This system has been evaluated for its performance with CaSO_4 Dy discs, powder, as well as with LiF: Mg, Ti chips. Linearity and reproducibility have been found to be quite satisfactory also within ±2%. This system is quite useful to study the TL of phosphor, minerals and characterization of various solid semiconducting materials, and also can be used in personal dosimetry measurements and research studies in medical dosimetry, environmental radiation monitoring, and host of other applications in R&D Labs., etc.

关键词：电脑控制的TL阅读器；TL发光曲线；PMT

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Our contribution is based on a research aimed to a "quick" resolution of an integrated problem oriented towards the self-localization and perimetration through mobile devices. The adopted methodology is applied on a real case study by using the following surveying tools: a kinematic Global Positioning System (GPS) and a Laser Scanner supporting a "mobile platform". A GPS receiver provided by Leica Geosystem and a two-dimensional Laser Scanner provided by the Automation and Control Laboratory of the University "Mediteranea" of Reggio Calabria were positioned on an experimental mobile system specifically designed to simulate the behaviour of a future and fully automated platform. The research is aimed to conduct the traditional land surveying through a Laser Scanner alongside with GPS receivers in a three dimensional centimetric resolution within one single system of reference made up of individual scans operated by a "Stop-and-Go" device.

关键词：激光扫描仪；自我定位；全球定位系统

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A multimeter, also known as a multitester or a VOM, is a type of electronic measurement instrument that incorporates several measurement functions in one compact unit. The most basic features include measurement of.

关键词：万用表；电子测量仪器；功能于一体；模拟；数字

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Cardiac rhythm management (CRM) devices are used to treat patients with abnormal heart rhythm disorders.

关键词：心动节律；心节律；设备；CRM

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The Thermo Scientific Toxic Vapor Analyzer (TVA)-1000B is an intrinsically safe direct reading portable monitor that uses either a flame ionization detector, a photoionization detector, or both simultaneously to provide real-time measurements of organic and some inorganic vapor concentrations in air. This field guide provides operators and incident commanders the basic concepts for effective use of the TVA-1000B, including principles of operation and supplies required.

关键词：生物工程；生物环境；浓度（组成）；环境工程

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