OHLSSON [1926; 1930] concluded from experiments on the action of the "dextrinogenamylase" and "saccharogenamylase" of malt on starch that the former enzyme breaks starch into progressively smaller molecules until maltose is produced, whereas the latter enzyme detaches maltose molecules successively from the starch. This conclusion was based mainly on the relative permanence of the starch-iodine...

Encapsulation of sensitive compounds in amorphous, glassy wall materials may protect them from environmental factors causing their loss during storage of food ingredients and foods. The stability of αtocopherol (2.5%, w/w, based on non-fat solids) in freeze-dried lactose-milk protein isolate-olive oil (3:1:2), lactose-soy protein isolate-olive oil (3:1:2), trehalose-milk protein isolate-olive o...

Introduction: The origin of secondary carbonate minerals in the oldest known martian meteorite ALH84001 have been intensely debated in the literature, with widely different thermal origins considered: ranging from hydrothermal alteration (possibly impactinduced) [e.g. 1, 2, 3] to low temperature alteration conditions [e.g. 4, 5, 6]. Recent isotopic evidence suggests the carbonates precipitated ...

A year-long offline based study was performed at five sites of Indo-Gangetic plain to get the spatio-temporal variation in elemental carbon (EC), organic (OC), water-soluble (WSOC) and secondary aerosol (SOA) PM2.5 fraction. OC constitutes ~70–90% total with high fraction (60–70%) during winter, except Hisar. The change concentration insignificant summer, whereas increased by 75–85%. relatively...

This investigation presents a theoretical evaluation of the use R450A replace to R134a in low and medium temperature heat pump systems. The energy, exergy, environmental enviro-economic analyzes pumps have been performed for two refrigerants (R134a its alternative R450A). thermodynamic analyses made source temperatures (10 oC 20 oC) six sink (from 30 55 oC). It has observed that R450A's mass fl...

In this work, we synthesized a facile step pyrolysis of ZnO/activated carbon nanocomposites by using molten ZnCl2 and rice husks in oxygen-limited environment. The mass ratio was chosen from 0 to 5 wt.%, the temperature range 400 800 oC. When equal 1.0 at oC, size ZnO nanoparticles diameter found be 10-20 nm. exhibited porous structure with BET surface area, average pore volume 643.9 m2/g, 4,76...

developmental periodsof thegrapevine aphid, aphis illinoisensis shimer (hemiptera: aphididae) on the grape, vitis vinifera l., and its two parasitoid species, lysiphlebus testaceipes (cresson) (exotic) (hymenoptera: braconidae: aphidiinae) and aphelinus albipodus hayat and fatima (indigenous) (hymenoptera: aphelinidae) were studied at two constant temperatures (20 and 25 ± 2 oc), 70 ± 5 % r.h. ...

Oral contraceptive (OC) use is associated with an increased risk of venous thromboembolism. Previous data reported higher thrombotic risk in women using third-generation combined OC than in those using second generation OC. The difference could be explained by differential effects of progestagens on plasma sensitivity to activated protein C (APC). The main purpose of this cross-sectional study ...

We investigated the association of oral contraceptive (OC) use and reproductive factors with colorectal cancer risk in a large population-based case-control study. Cases were women ages 20 to 74 years, living in Wisconsin, with a new diagnosis of colon (n = 1,122) or rectal (n = 366) cancer. Control participants were randomly selected from population lists of similarly aged female Wisconsin res...

Surface sediment cores from Oriole Lake (CA) were analyzed for organic carbon (OC), black carbon (BC), and their δ(13)C isotope ratios. Sediments displayed high OC (20-25%) and increasing BC concentrations from ∼0.40% (in 1800 C.E.) to ∼0.60% dry weight (in 2000 C.E.). Petrographic analysis confirmed the presence of fire-derived carbonaceous particles/BC at ∼2% of total OC. Natural fires were t...