A Packet Based 2x-Site Test Solution for GSM Transceivers with Limited Tester Resources

2009 ◽  
Author(s):  
Erdem Serkan Erdogan ◽  
Sule Ozev
Keyword(s):  
Test Solution ◽  
Site Test

Slope stability and bearing capacity of landfills and simple on-site test methods

2017 ◽  
Vol 35 (7) ◽  
pp. 730-738 ◽  
Author(s):  
Atsushi Yamawaki ◽  
Yoichi Doi ◽  
Kiyoshi Omine
Keyword(s):  
Slope Stability ◽  
Bearing Capacity ◽  
Test Methods ◽  
Site Test

Effects on Erythrocyte Aggregation and Blood Coagulation from Iohexol Solutions with and without Sodium Chloride

1995 ◽  
Vol 36 (2) ◽  
pp. 204-209
Author(s):  
C.-M. Chai ◽  
T. Almén ◽  
P. Aspelin ◽  
L. Bååth
Keyword(s):  
Sodium Chloride ◽  
Blood Coagulation ◽  
Glucose Solution ◽  
Cell Aggregation ◽  
Test Solution ◽  
Erythrocyte Aggregation ◽  
Cell Aggregates ◽  
Red Cell ◽  
Red Blood Cell Aggregation ◽  
Osmotic Effects

Solutions of the nonionic monomeric contrast medium iohexol (300 mg I/ml) with and without added NaCl were investigated for effects on red blood cell aggregation and blood coagulation. Three volumes of a test solution were mixed in test tubes with one volume of human blood. During 30 min samples of the mixture were taken for investigation. Six test solutions were used: 1) iohexol, 2) iohexol+glucose 280 mM, 3) iohexol+NaCl 150 mM, 4) glucose 280 mM, 5) glucose 140 mM+NaCl 75 mM, 6) NaCl 150 mM. Test solutions with NaCl caused no aggregation. Test solutions without NaCl always caused macroscopic red cell aggregates. These aggregates always disappeared when saline was added to the sample. The macroscopic red cell aggregates could be dispersed to microscopic aggregates by shaking the test tubes. During the next 30 min macroscopic aggregates returned in the glucose solution but not in the iohexol solutions. In 30 min, blood mixed with iohexol solutions never coagulated while blood layered on top of the same iohexol solutions always coagulated. Blood mixed with solutions 5 and 6, both without iohexol, always coagulated. It is concluded that adding 150 mM NaCl to iohexol did not eliminate its ability to antico-agulate whole blood, but inhibited its ability to aggregate red cells. This inhibition was not caused by the osmotic effects of the added NaCl.

scholarly journals On-site test to detect syphilis in pregnancy: a systematic review of test accuracy studies

2016 ◽  
Vol 124 (5) ◽  
pp. 734-741 ◽  
Author(s):  
E Rogozińska ◽  
L Kara-Newton ◽  
JR Zamora ◽  
KS Khan
Keyword(s):  
Systematic Review ◽  
Test Accuracy ◽  
Site Test ◽  
In Pregnancy

Guinea Pig Vestibular Type I Hair Cells Can Show Reversible Shortening

1991 ◽  
Vol 1 (3) ◽  
pp. 241-250
Author(s):  
Pascale N.M. Lapeyre ◽  
Yves Cazals
Keyword(s):  
Guinea Pig ◽  
Hair Cells ◽  
Neck Region ◽  
Outer Hair Cells ◽  
Test Solution ◽  
Induced Response ◽  
Type I ◽  
Hypotonic Solution ◽  
Bathing Medium ◽  
Water Influx

Guinea pig isolated vestibular type I hair cells (VIHCs) were recently reported by our group to respond to high [KCl] solutions by an irreversible tilt of their neck region and sometimes by a sustained shortening and swelling. A possible osmotic contribution to these shape changes was investigated by substituting gluconate (G) for chloride in the test solution, so as to minimize water influx, and also by changing the osmotic pressure of the extracellular solution. For comparison, similar experiments were also undertaken on cochlear outer hair cells (OHCs). Utricular and ampullar type I hair cells were more difficult to isolate than OHCs and, like them, responded to an isotonic high [KCl] solution by a sustained shortening and widening, which were found to be reversible for most cells when rinsed with the control solution. In a high [KG] solution, all OHCs showed a shortening reversible in the test solution; among the VIHCs tested, two-thirds presented a slight sustained shortening without widening and a third showed a spontaneously reversible shortening, particularly at the neck level. VIHCs exposed to a high [N-methyl-D-glucamine chloride] solution, this impermeant cation replacing K+ for control, presented only a slight sustained shortening. In response to osmotic changes of the bathing medium, both VIHCs and OHCs showed a sustained shortening or elongation (the latter to a lesser degree) for hypo- and hyperosmotic solutions, respectively. The VIHCs and OHCs that presented a reversible shortening in a high [KG] solution widened concomitantly with their shortening, but to a smaller extent compared with what was observed in a high [KCl] solution, and this diameter increase was reversible in the test solution, unlike the widening observed in a hypotonic solution. These results show that a reversible shortening occurred for some VIHCs; they also indicate the involvement of two components in the KCl-induced response: one osmotic and another potassium-dependent.

Uji Aktivitas Antikolesterol Ekstrak Etanol Daun Jambu Air(Syzygium aqueum (Burm.f.)Alston) SecaraIn Vitro

2021 ◽  
Vol 1 ◽  
pp. 839-849
Author(s):  
Miranda Noviani ◽  
S Slamet ◽  
W Wirasti ◽  
Urmatul Waznah
Keyword(s):  
Ethanol Extract ◽  
Activity Analysis ◽  
Test Solution ◽  
Percent Reduction ◽  
Flavonoid Compounds ◽  
Cholesterol Levels ◽  
Body Tissues ◽  
Guava Leaves ◽  
Guava Leaf

AbstractCholesterol is a natural substance that has physical properties similar to fat but has the formula steroids. Cholesterol belongs to the non-hydrolyzed lipid group and is the main sterol in body tissues. When cholesterol levels increase, it can cause blockages in blood vessels. Several studies have explained that one of the compounds that can reduce cholesterol is flavonoid compounds, one of the plants containing flavonoid compounds is guava leaf (Syzygium aqueum (Burm.f.) Alston). The purpose of this study was to determine the activity and percent reduction in cholesterol levels and the EC50 value of the ethanol extract of guava leaves (Syzygium aqueum (Burm.f.) Alston) in vitro using UV-Vis spectrophotometry with a wavelength of 665 nm. Anticholesterol activity analysis was carried out using Lieberman-Burchard reagent with a test solution series of 150; 300; 450; 600; and 750 ppm. The results showed that the greater the concentration, the lower the absorbance produced and the higher the percent reduction in cholesterol levels. At a concentration of 750 ppm cholesterol decreased by 58.74%. And the obtained EC50 value of 462 ppm, which means at that concentration the ethanol extract of guava leaves (Syzygium aqueum (Burm.f.) Alston) can reduce 50% of the initial cholesterol.Keywords:Cholesterol, Guava leaf, In Vitro, Spectrophotometry UV-Vis, Syzygium aqueum (Burm.f.)Alston. AbstrakKolesterol merupakan suatu zat alami yang memiliki sifat fisik hampir sama dengan lemak tetapi memiliki rumus steroida. Kolesterol adalah sterol utama yang ada pada jaringan tubuh dan termasuk dalam golongan lipid yang tidak terhidrolisis. Apabila kadar kolesterol mengalami kenaikan, dapat menyebabkan penyumbatan pada pembuluh darah. Dari beberapa penelitian dijelaskan bahwa salah satu senyawa yang dapat menurunkan kolesterol adalah flavonoid, salah satu tanaman yang mengandung senyawa flavonoid adalah daun jambu air (Syzygium aqueum (Burm.f.)Alston). Tujuan dari penelitian ini adalah untuk mengetahui aktivitas dan persen penurunan kadar kolesterol serta nilai EC50 dari ekstrak etanol daun jambu air (Syzygium aqueum (Burm.f.)Alston) secara in vitro menggunakan spektrofotometri UV-Vis dengan panjang gelombang 665 nm. Analisis aktivitas antikolesterol dilakukan dengan menggunakan pereaksi Lieberman-Burchard dengan seri larutan sampeli 150; 300; 450; 600; dan 750 ppm. Hasil penelitian menunjukkan semakin besar konsentrasi, absorbansi yang dihasilkan adalah semakin rendah dan persen penurunan kadar kolesterolnya semakin tinggi. Pada konsentrasi 750 ppm terjadi penurunan kolesterol sebesar 58,74%. Dan diperoleh nilai EC50 sebesar 462 ppm yang artinya pada konsentrasi tersebut ekstrak etanol daun jambu air (Syzygium aqueum (Burm.f.)Alston) dapat menurunkan 50% dari kolesterol awal.Kata kunci: Daun jambu air;Kolesterol;In Vitro;Spektrofotometri UV-Vis;Syzygium aqueum (Burm.f.)Alston

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