Harmonic emission before and after changing to LED and CFL — Part I: Laboratory measurements for a domestic customer

2010 ◽  
Author(s):  
S. K Ronnberg ◽  
M.H.J. Bollen ◽  
M Wahlberg
Keyword(s):  
Laboratory Measurements ◽  
Harmonic Emission ◽  
Before And After

scholarly journals The Effect of Resistance Training and Vitamin D on Leptin and HDL-C in Overweight Women

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Maryam Najafi ◽  
Hoseyn Fatolahi
Keyword(s):  
Vitamin D ◽  
Resistance Training ◽  
Reverse Cholesterol Transport ◽  
Cholesterol Transport ◽  
Laboratory Measurements ◽  
Daily Consumption ◽  
Overweight Women ◽  
Before And After ◽  
Effective Part ◽  
Training Protocol

Background: Exercise training and vitamin D consumption are separately reported to be effective on improving health. However, the simultaneous effect of resistance training and vitamin D is not clear yet. However, there is no information available on the resistance training and the amount of vitamin D prescription. In addition, it is important to examine this issue in women who are known as an active and effective part of society. Methods: The participants (n = 40) of this study were randomly divided into four groups as follows: (1) placebo, (2) resistance training, (3) vitamin D, and (4) resistance training + vitamin D. In this study, interventions were performed for an 8-week period (3 D/W) consisting of resistance training protocol (60% 1-RM) and daily consumption of vitamin D (1000 IU). Anthropometric and laboratory measurements were collected 48 hours before and after the intervention. Results: Changes in HDL-C (P = 0.001, F = 6.3), total cholesterol (P = 0.001, F = 7.8), and leptin concentration (P = 0.001, F = 11.4) were significant. Accordingly, these changes in the study variables showed a better improvement in the resistance training + vitamin D group compared to the other groups (P = 0.001). Conclusions: Probably the most important factor for the observed changes was the reduction of adipose tissue caused by resistance training, as well as the enhancement of signaling pathways resulting from the consumption of vitamin D. However, maintaining muscle tissue caused by resistance training can be effective. Moreover, HDL change due to resistance training and its effect on reverse cholesterol transport may occur faster than LDL-C changes. Also, the improvement in LDL-C appears in response to longer periods of exercise along with drug therapy.

Changes in the pressure and the dynamic stiffness index of medical elastic compression stockings after having been worn for eight hours: a pilot study

2009 ◽  
Vol 24 (1) ◽  
pp. 31-37 ◽  
Author(s):  
C P M van der Wegen-Franken ◽  
B Tank ◽  
T Nijsten ◽  
H A M Neumann
Keyword(s):  
Pilot Study ◽  
Dynamic Stiffness ◽  
Stiffness Index ◽  
Pressure Amplitude ◽  
Laboratory Measurements ◽  
Compression Stockings ◽  
Pressure Drops ◽  
Elastic Compression ◽  
Before And After ◽  
Exerted Pressure

Objectives There is no data available at present on the changes in the exerted pressure together with the dynamic stiffness index (DSI) of medical elastic compression stockings (MECS). The objective of this pilot study was to measure the pressure and calculate the DSI of 12 different brands of MECS before and after having been worn for eight hours. Methods In all, 12 different commercially available brands of MECS that were divided into two categories (class I round-knitted and class II flat-knitted MECS) were tested. The pressure was measured, and the DSI of the MECS was first calculated at the B1 level before wearing in the morning and again eight hours after they had been worn. All laboratory measurements were performed using a newly developed dynamic leg-segment model. Results The pressure at the B1 level dropped significantly in all 12 brands of MECS after having been worn for eight hours, whereas the DSI remained unchanged. Conclusion The DSI of MECS reflects an important and particularly consistent therapeutic effect. As the pressure drops during the day, the pressure amplitude or pulsations remain the same. The pressure drop may be due to fatigue of the elastic material. The DSI would therefore form a valuable indicator for prescribing the most effective MECS for the patient.

scholarly journals KAJIAN TENTANG KUALITAS AIR FOUNTAIN (Studi Kasus Air Fountain di Taman Bungkul Kota Surabaya)

2013 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuliana Ngasarotun ◽  
Narwati . ◽  
Imam Thohari
Keyword(s):  
Standard Operating Procedure ◽  
Laboratory Measurements ◽  
Treatment Unit ◽  
Descriptive Research ◽  
Standard Operating ◽  
Before And After ◽  
Microbiological Parameters ◽  
Onsite Treatment ◽  
Composite Samples

People are doubtful to drink from water fountain provided in amusement parks. In addition, itwas whose has the contamination to other users. It was occured becausethe controllers to the faucet ofdrinking water. This research is aimed at studying water quality of a drinking fountain, before and afterthe onsite treatment processesat the unit located in Tarnan.Bunqkul Surabaya.This is a descriptive research, where water samples were drawn as a composite samples, twice aday (morning and afternoon) sampling takes before and after processing the fountain water treatmentunit. Data were collected through laboratory measurements on physical characteristics (smell, color,turbidity, taste, temperature), microbiological parameters (coliform MPNindex), chemical quality (iron andpH) and through organoleptic determination that include smell, color, taste, as well as visual observationson the state of the water fountain and associated treatment unit. Collected data were tabulated andanalyzed as is.Results of physical, microbiological, and chemical examinations showed that parameters were inaccordance with designations in the Ministry of Health Regulation No 492/Menkes/PER/IV/2010. Resultsofthe first and second laboratory analysis indicated decreased levels of color, turbidity, temperature, coliformMPN,iron, pH. However in the second examination the water temperature increased (0.004%).The study concluded that water fountain suitable for consumption. For the maintenance of thewater fountain quality the study suggested that people should wash their hands prior to using the waterfountain and observe the Standard Operating Procedure (SOP).Keywords :drinking water fountain, contaminants, transmission of the disease

scholarly journals Calculating structural and geometrical parameters by laboratory measurements and X-ray microtomography: a comparative study applied to a limestone sample before and after a dissolution experiment

Solid Earth ◽  
2016 ◽  
Vol 7 (2) ◽  
pp. 441-456 ◽  
Author(s):  
Linda Luquot ◽  
Vanessa Hebert ◽  
Olivier Rodriguez
Keyword(s):  
Diffusion Coefficient ◽  
Pore Size ◽  
Effective Diffusion Coefficient ◽  
Laboratory Experiments ◽  
Rock Sample ◽  
Effective Diffusion ◽  
Laboratory Measurements ◽  
X Ray ◽  
Before And After ◽  
Limestone Rock

Abstract. The aim of this study is to compare the structural, geometrical and transport parameters of a limestone rock sample determined by X-ray microtomography (XMT) images and laboratory experiments. Total and effective porosity, pore-size distribution, tortuosity, and effective diffusion coefficient have been estimated. Sensitivity analyses of the segmentation parameters have been performed. The limestone rock sample studied here has been characterized using both approaches before and after a reactive percolation experiment. Strong dissolution process occurred during the percolation, promoting a wormhole formation. This strong heterogeneity formed after the percolation step allows us to apply our methodology to two different samples and enhance the use of experimental techniques or XMT images depending on the rock heterogeneity. We established that for most of the parameters calculated here, the values obtained by computing XMT images are in agreement with the classical laboratory measurements. We demonstrated that the computational porosity is more informative than the laboratory measurement. We observed that pore-size distributions obtained by XMT images and laboratory experiments are slightly different but complementary. Regarding the effective diffusion coefficient, we concluded that both approaches are valuable and give similar results. Nevertheless, we concluded that computing XMT images to determine transport, geometrical, and petrophysical parameters provide similar results to those measured at the laboratory but with much shorter durations.

scholarly journals Intercomparison of O<sub>2</sub> ∕ N<sub>2</sub> ratio scales among AIST, NIES, TU, and SIO based on a round-robin exercise using gravimetric standard mixtures

2021 ◽  
Vol 14 (9) ◽  
pp. 6181-6193
Author(s):  
Nobuyuki Aoki ◽  
Shigeyuki Ishidoya ◽  
Yasunori Tohjima ◽  
Shinji Morimoto ◽  
Ralph F. Keeling ◽  
...  
Keyword(s):  
Molar Fraction ◽  
Standard Uncertainty ◽  
Round Robin ◽  
National Metrology Institute ◽  
Laboratory Measurements ◽  
Management Technology ◽  
Before And After ◽  
Global Estimates ◽  
The Difference ◽  
Ratio Scales

Abstract. A study was conducted to compare the δ(O2/N2) scales used by four laboratories engaged in atmospheric δ(O2/N2) measurements. These laboratories are the Research Institute for Environmental Management Technology, Advanced Industrial Science and Technology (EMRI/AIST); the National Institute for Environmental Studies (NIES); Tohoku University (TU); and Scripps Institution of Oceanography (SIO). Therefore, five high-precision standard mixtures for the O2 molar fraction gravimetrically prepared by the National Metrology Institute of Japan, AIST (NMIJ/AIST) with a standard uncertainty of less than 5 per meg (0.001 ‰) were used as round-robin standard mixtures. EMRI/AIST, NIES, TU, and SIO reported the analyzed values of the standard mixtures on their own δ(O2/N2) scales, and the values were compared with the δ(O2/N2) values gravimetrically determined by NMIJ/AIST (the NMIJ/AIST scale). The δ(O2/N2) temporal drift in the five standard mixtures during the intercomparison experiment from May 2017 to March 2020 was corrected based on the δ(O2/N2) values analyzed before and after the laboratory measurements by EMRI/AIST. The scales are compared based on offsets in zero and span. The relative span offsets of EMRI/AIST, TU, NIES, and SIO scales against the NMIJ/AIST scale were -0.11%±0.10%, -0.10%±0.13%, 3.39 %±0.13 %, and 0.93 %±0.10 %, respectively. The largest offset corresponded to a 0.30 Pg yr−1 decrease and increase in global estimates for land biospheric and oceanic CO2 uptakes based on trends in atmospheric CO2 and δ(O2/N2). The deviations in the measured δ(O2/N2) values on the laboratory scales from the NMIJ/AIST scale are 65.8±2.2, 425.7±3.1, 404.5±3.0, and 596.4±2.4 per meg for EMRI/AIST, TU, NIES, and SIO, respectively. The difference between atmospheric δ(O2/N2) values observed at Hateruma Island (HAT; 24.05∘ N, 123.81∘ E), Japan, by EMRI/AIST and NIES were reduced from -329.3±6.9 to -6.6±6.8 per meg by converting their scales to the NMIJ/AIST scale.

Deformation Replication

1970 ◽  
Vol 28 ◽  
pp. 280-281
Author(s):  
J. Temple Black
Keyword(s):  
Cutting Speed ◽  
Machining Process ◽  
Depth Of Cut ◽  
Rake Face ◽  
Orthogonal Machining ◽  
Aluminum Chips ◽  
Before And After ◽  
Materials Used ◽  
Glass Knife ◽  
Very High

Tool materials used in ultramicrotomy are glass, developed by Latta and Hartmann (1) and diamond, introduced by Fernandez-Moran (2). While diamonds produce more good sections per knife edge than glass, they are expensive; require careful mounting and handling; and are time consuming to clean before and after usage, purchase from vendors (3-6 months waiting time), and regrind. Glass offers an easily accessible, inexpensive material ($0.04 per knife) with very high compressive strength (3) that can be employed in microtomy of metals (4) as well as biological materials. When the orthogonal machining process is being studied, glass offers additional advantages. Sections of metal or plastic can be dried down on the rake face, coated with Au-Pd, and examined directly in the SEM with no additional handling (5). Figure 1 shows aluminum chips microtomed with a 75° glass knife at a cutting speed of 1 mm/sec with a depth of cut of 1000 Å lying on the rake face of the knife.

The Clinical, Roentgenological and Morphological Effects of an Acute Exposure of Phosgene on the Lungs of Dogs

1971 ◽  
Vol 29 ◽  
pp. 236-237
Author(s):  
R. F. Bils ◽  
W. F. Diller ◽  
F. Huth
Keyword(s):  
Latent Period ◽  
Chemical Industry ◽  
Toxic Substance ◽  
Lung Edema ◽  
X Rays ◽  
Beagle Dogs ◽  
Male And Female ◽  
Morphological Alterations ◽  
Before And After ◽  
Electron Microscopes

Phosgene still plays an important role as a toxic substance in the chemical industry. Thiess (1968) recently reported observations on numerous cases of phosgene poisoning. A serious difficulty in the clinical handling of phosgene poisoning cases is a relatively long latent period, up to 12 hours, with no obvious signs of severity. At about 12 hours heavy lung edema appears suddenly, however changes can be seen in routine X-rays taken after only a few hours' exposure (Diller et al., 1969). This study was undertaken to correlate these early changes seen by the roengenologist with morphological alterations in the lungs seen in the'light and electron microscopes.Forty-two adult male and female Beagle dogs were selected for these exposure experiments. Treated animals were exposed to 94.5-107-5 ppm phosgene for 10 min. in a 15 m3 chamber. Roentgenograms were made of the thorax of each animal before and after exposure, up to 24 hrs.

Ultrastructure of Melanin Formation in Curvularia sp., Alternaria sp., and Drechslera Sorokiniana

1977 ◽  
Vol 35 ◽  
pp. 398-399
Author(s):  
M. H. Wheeler ◽  
W. J. Tolmsoff ◽  
A. A. Bell
Keyword(s):  
Potassium Phosphate ◽  
Thielaviopsis Basicola ◽  
Wild Type ◽  
Potassium Phosphate Buffer ◽  
Transmission Microscopy ◽  
Electron Transmission ◽  
Melanin Formation ◽  
Before And After ◽  
Alternaria Sp ◽  
Electron Transmission Microscopy

(+)-Scytalone [3,4-dihydro-3,6,8-trihydroxy-l-(2Hj-naphthalenone] and 1,8-di- hydroxynaphthalene (DHN) have been proposed as intermediates of melanin synthesis in the fungi Verticillium dahliae (1, 2, 3, 4) and Thielaviopsis basicola (4, 5). Scytalone is enzymatically dehydrated by V. dahliae to 1,3,8-trihydroxynaphthalene which is then reduced to (-)-vermelone [(-)-3,4- dihydro-3,8-dihydroxy-1(2H)-naphthalenone]. Vermelone is subsequently dehydrated to DHN which is enzymatically polymerized to melanin.Melanin formation in Curvularia sp., Alternaria sp., and Drechslera soro- kiniana was examined by light and electron-transmission microscopy. Wild-type isolates of each fungus were compared with albino mutants before and after treatment with 1 mM scytalone or 0.1 mM DHN in 50 mM potassium phosphate buffer, pH 7.0. Both chemicals were converted to dark pigments in the walls of hyphae and conidia of the albino mutants. The darkened cells were similar in appearance to corresponding cells of the wild types under the light microscope.

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