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28.350  Articles
1 of 2.835 pages  |  10  records  |  more records»
The effect of macrocycle ring size on the corrosion inhibition efficiency of dibenzo-12-crown-4 (DB12C4), dibenzo-15-crown-5 (DB15C5), dibenzo-18-crown-6 (DB18C6), dibenzo-21-crown-7 (DB21C7) and dibenzo-24-crown-8 (DB24C8) have been elucidated by mean of... see more

In 2008-2009, a trial was carried out to determine the relationships between fruit size, fruit quality parameters and age of branches of the trees crown, in order to assess whether age of branches where the bearing branches are inserted is correlated with... see more

Objective: The size of primary teeth in the current Brazilian population has not been studied yet; the aim of this in vitro study was to document the size and variation of deciduous teeth from a tooth bank in São Paulo, Brazil. Methods: A sample of 1,095 ... see more

Introduction: Ultrasound examination of pregnant women to assess the anatomy and normal developmental parameters of the fetus has been a standard in obstetrics since the 1980s. Nowadays, attempts are being made to identify sex in early pregnancy. The meth... see more

The structures, energetic and thermodynamic parameters of crown ethers with different cavity size, electron donating/withdrawing substituent groups and donor atoms have been determined with density functional method at B3LYP level of theory in gas and sol... see more

The aim of this research is to find information about the substituent effect to the structure of crown ether benzo-15-crown-5 (Bz15C5), dibenzo-16-crown-5 (DBz16C5) and dibenzo-18-crown-6 (DBz18C6), and also crown ether selectivity to coordinate a Li+ met... see more

Objectives: Attempts to retain primary teeth have led to introduction of materials and techniques for their preservation such as stainless steel crowns (SSCs). Due to variations in tooth anatomy among different populations, this study compared the buccoli... see more

The vegetative clonal teak is fast-growing, exhibits relatively uniform growth, and is sensitive to crown competition. The crown width dimension correlates positively with the size of the diameter (CW allometry). We investigated the effects of competition... see more

The purpose of this study was to practice and improve the use of low volume crowns in a high-density system in order to obtain qualitative cherry production that would be competitive on the market and to make efficient use of the labor force. The research... see more

1 of 2.835 pages  |  10  records  |  more records»