Lignin modified phenol formaldehyde wood adhesives have been prepared by replacing phenol with the groundnut shell lignin (GNSL) at varying weight percentages. The optimization of weight percent incorporation of GNSL was carried out in respect to mechanical properties. It was found that a maximum of up to 50 wt.% of phenol in the phenol formaldehyde (PF) adhesive can be substituted by GNSL to o...

Cardiologists are involved in 22 percent of all claims involving a cardiology-related diagnosis, followed in frequency by internists (19 percent), family medicine practitioners (14 percent), hospitalists (8 percent), emergency medicine doctors (7 percent), anesthesiologists (4 percent), and cardiac surgeons (3 percent), according to The Doctors Company, the nation’s largest physician-owned medi...

The purpose of the present clinical research was to establish the major site of resistance and obstruction in patients with severe, symptomatic chronic obstructive pulmonary disease. We used a noninvasive technique by measuring airflow in a plethysmograph after patients breathed air and after breathing a mixture of 80 percent helium and 20 percent oxygen. In group 1 were 14 patients (mean age, ...

quasicrystals are a group of materials with the quasi-periodic structure, and since their discovery in 1980 their specially interesting physical properties have attracted the attention of many researchers. the lack of translational periodicity makes the numerical calculations of their physical properties much more difficult than the crystalline solids. in this work we present a detailed numeric...

a suitable option for manufacture of packing materials is the use of clay and silver nano particles. these materials help create optimal relative impermeable quality, in addition to other features being improved. moisture-packed bread by use of these materials prevent water vapor loss and therefore reduce the level of bread becoming stale. in this study, seven types of nano-films with different...

The prostate is a complex organ composed of epithelial cells and fibromuscular stroma. Benign prostatic hyperplasia is a true hyperplastic process, with an increase in the number of cells arising initially in the transition zone of the gland. Complex stromal– epithelial interactions lead to benign prostatic hyperplasia in 50 percent of men by the age of 50 years. This process requires testicula...