Evidence for the existence of life during the Archaean segment of Earth history (more than 2500 Myr ago) is summarized. Data are presented for 48 Archaean deposits reported to contain biogenic stromatolites, for 14 such units reported to contain 40 morphotypes of putative microfossils, and for 13 especially ancient, 3200-3500 Myr old geologic units for which available organic geochemical data a...

PURPOSE The aim of this study was to compare the trueness and precision of four intraoral scanners used in oral implantology. METHODS Two stone models were prepared, representing a partially and a totally edentulous maxilla, with three and six implant analogues, respectively, and polyether-ether-ketone (PEEK) cylinders screwed on. The models were digitized with an industrial scanner (IScan D1...

The shale gas resources in China have great potential and they are distributed 13 stratigraphic series from the Mesoproterozoic to Cenozoic. Organic-rich shales can be divided into three types according their sedimentary environments, namely marine, marine-continental transitional, continental shales. geological of is over 100 trillion m3, which includes 20 m3 recoverable resources. Sichuan Bas...

Objectives. To compare the effectiveness of postcesarean thromboprophylaxis with two different regimens of bemiparin. Material and Methods. The study included 646 women with cesarean delivery in our hospital within a 1-year period, randomly assigned to one of two groups for prophylaxis with 3500 IU bemiparin once daily for 5 days or 3500 IU bemiparin once daily for 10 days. Results. There was o...

Ascent to extreme High Altitude (HA) is in steps and it entails acclimatization at moderately HA locations. In terms of acclimatization, it is pertinent to understand the physiological changes, which occur on immediate ascent to moderate HA. The study aimed to evaluate the effect of ascent to 3500 m on neuro-endocrine responses in the first hour of induction. The plasma levels of catecholamines...

INTRODUCTION We previously presented an investigation on the Specific Absorption Rate (SAR) and temperature elevation using Japanese anatomical human models for body-worn usage at 900, 1950, and 3500 MHz [1]. The results showed that there was a difference in the 10g average SAR between the male and the female models, but the temperature elevation was almost the same at 900 and 1950 MHz and vice...

To achieve selective inhibition of cytosolic and membrane-bound carbonic anhydrase (CA II and CA IV, respectively), we synthesized a polymer of molecular weight 3500 from polyoxyethylene bis acetic acid and aminobenzolamide. The new compound, designated F (for Florida) 3500, is stable, water soluble and nontoxic. It is excreted largely unchanged by glomerular filtration. The Ki at 37 degrees C ...

Background: Knowledge of the weight of the foetus in utero is important for the obstetricians to decide the time and mode of delivery. It can be estimated clinically, biochemically or by radiological imaging .None of the diagnostic tools are direct .Interestingly clinically estimated foetal weight is being found more precise than radiological estimation Aim:. This study was designed to find the...