Results 11 to 20 of about 436,480 (310)

Determination of Chromium Mineral in Foodstuffs in Indonesia using INAA Method [PDF]

open access: yesE3S Web of Conferences
The concentration of the element chromium (Cr) was determined in 76 types of food ingredients from four provinces in Indonesia. The element Cr is one of the essential elements needed by the human body for physiological processes.
Nurcahyani Fatmawati   +8 more
doaj   +1 more source

Low thermal conductivity lanthanum zirconate nanofibrous membranes for thermal insulation

open access: yesInternational Journal of Ceramic Engineering & Science, 2023
Lanthanum zirconate (LZO) has high‐temperature advantages, including a high melting point, low thermal conductivity, and high structure stability, which has the potential to be used in high‐temperature thermal insulation field.
Hengchang Wang   +6 more
doaj   +1 more source

Vibration Error Analysis and Motion Compensation of Video Synthetic Aperture Radar

open access: yesLeida xuebao, 2015
Video Synthetic Aperture Radar (ViSAR) system offers high imaging frame rate, and high resolution, and it is consequently used to investigate and locate near-moving targets. Compared with microwave SAR, the practical application of ViSAR is restricted by
Zhao Yu-lu   +4 more
doaj   +1 more source

Comparing Soil Erosion Rates on Terraced and Sloping Cultivated Land in Palestine Using FRN 137Cs Trace

open access: yesInternational Journal of Analytical Chemistry, 2022
Soil erosion is a serious problem in Palestine. It is enhanced mainly by poor farming practices used in upland agricultural areas occupying the Central Highland of Palestine.
Orwa Houshia   +6 more
doaj   +1 more source

Enhanced thermal insulation and mechanical properties of Y-α-SiAlON porous ceramics with Sr doping

open access: yesJournal of Materials Research and Technology, 2023
α-SiAlON is a potential wave-transmittance material for radome materials, yet the comprehensive properties need to be improved. In this study, a series of SrxY0.5-xSi12-(m + n) Alm +nOnN16-n (x = 0.02, 0.04, 0.06, and 0.08) porous ceramics with ...
Fengying Fan   +7 more
doaj   +1 more source

A HISTORY OF RADIATION DETECTION INSTRUMENTATION [PDF]

open access: yesHealth Physics, 2004
A review is presented of the history of radiation detection instrumentation. Specific radiation detection systems that are discussed include the human senses, photography, calorimetry, color dosimetry, ion chambers, electrometers, electroscopes, proportional counters, Geiger Mueller counters, scalers and rate meters, barium platinocyanide ...
openaire   +4 more sources

Sensor Networks for Geospatial Event Detection - Theory and Applications [PDF]

open access: yes, 2013
This thesis presents theories, analyses, and algorithms for detecting and estimating parameters of geospatial events with today's large, noisy sensor networks.
Liu, Annie Hsin-Wen
core   +1 more source

Method and Implementation of High-speed Digital Sampling Technology Based on Impulse Radar Signal

open access: yesLeida xuebao, 2012
A High-speed digital sampling technology suitable for periodical impulse radar signal is proposed in this paper. One bit high-speed quantize is constructed by differential comparator in FPGA. Time-interleaved digital sampling and buffer encoding are used
Shen Shao-xiang   +2 more
doaj   +1 more source

A Novel Lithium Foil Cosmic-Ray Neutron Detector for Measuring Field-Scale Soil Moisture

open access: yesFrontiers in Water, 2021
During the past decade, cosmic-ray neutron sensing technology has enabled researchers to reveal soil moisture spatial patterns and to estimate landscape-average soil moisture for hydrological and agricultural applications.
Andres Patrignani   +4 more
doaj   +1 more source

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