A new approach to the modelling oflhc Earth's crust, especially ils upper portion, uti lising different kinds of geodeti c (vert ical den ecliol1 components, geoid su rface), gravimetric (Bouguer and other gravity anomalies) and geo ph ys ica l (3 D seis mi c from bore ho le prospecting) data is presented in Ihis paper. Thi s scient ific research formed part of a special contract between the Fa...

Acetic acid-catalyzed steam explosion pretreatment was applied to wheat straw at temperatures of 190 and 210 °C for 2, 6, and 10 min of residence time. The effects of pretreatment conditions on the total gravimetric recovery, hemicellulose sugars, glucose content, and yield of the enzymatic hydrolysis of cellulose were studied. The results indicated that the total gravimetric recovery decreases...

in this study the influence of azelaic acid (aza) 20% cream on the sebum excretion rate (ser) of 80 volunteers having mild to moderate acne vulgaris was demonstrated. absorbent paper and sebutape were used to collect the sebum and quantification was carried out by direct gravimetric method. it was shown that topical application of aza creams could reduce the ser and number of acneic lesions as ...

We report highly reproducible gravimetric and optical measurements of microdroplets that lend insights into the fundamentals of drop-on-demand (DOD) printing. Baseline fluidic pressure within the DOD dispenser was controlled to within 0.02 hPa, enabling long-term stability in dispensed droplet mass with observed variations near 1% (RSD) for isobutanol. The gravimetric measurements were sensitiv...

The current paper aims to determine the actuality of optical method measuring PM 10 dusts powders compared reference (gravimetric method). According Integrated National Plan in field Energy and Climate Change 2021-2030, Romania must implement a program reduce impact on atmosphere, including air quality monitoring, thus leading an increase number monitoring points samples required for monitoring...

Three perchlorate salts of pyridine have been prepared and characterized by gravimetric and elemental analyses. Thermogravimetry (TG) and differential thermal analysis (DTA) have been carried out in static air, to examine the thermal decomposition process of these salts. Isothermal TG of these salts have been done to evaluate the kinetics of thermal decomposition in the temperature range 290-41...

In this study, the efficiency of a clean-up method by gel permeation chromatography (GPC) for the separation of pesticides from lanolin is analyzed. The pesticides analyzed belong to two different families, organophosphorous and synthetic pyrethroids. Lanolin, a standard mixture of the pesticides, and a lanolin-pesticides mixture are injected in a GPC column. The recoveries and elution times fr...