Nano-Clay Platelet Integration for Enhanced Bending Performance of Concrete Beams Resting on Elastic Foundation: An Analytical Investigation.

Acknowledging the growing impact of nanotechnologies across various fields, this engaging research paper focuses on harnessing the potential of nano-sized materials as enhancers for concretes. The paper emphasizes the strategic integration of these entities to comprehensively improve the strength and performance of concrete matrixes. To achieve this, an analytical study is conducted to investigate the static behavior of concrete beams infused with different types of clay nano-platelets (NC's), employing quasi-3D beam theory.

Investigation of the elastic constants of perfect and imperfect carbon nanocones using an adequate nonlinear atomic finite element model.

In order to investigate the elastic constants of pristine and imperfect carbon nanocones, the present work aims to develop an easy and efficient nonlinear atomic finite element model (AFEM) capable of capturing the torsional effect in addition to the bond stretching and bond angle bending interactions. These effects are considered the predominant atomistic interactions induced in carbon nanocones (CNCs). Hence, a new basic AFEM element containing nineteen atoms is developed and examined by studying the effect of the geometric parameters of CNCs on their Young's modulus and comparing the obtained results with the available literature.

The impact of nutrition and lifestyle on male fertility.

Background And Aims: Male unexplained infertility has long been suspected to result from environmental, lifestyle and nutritional factors. However, the literature on the subject is still scarce, and clinical studies providing robust evidence are even scarcer. In addition, some similar studies come to different conclusions.

[Separate entrance of the main pancreatic duct and of the common bile duct: is it synonymous with easy retrograde cholangiography using endoscopic approach?].

This study focused on endoscopic examination of a prominent papilla which showed two separate orifices revealing separate entrance of the main pancreatic duct and of the common bile duct (A). This was the most rare anatomoendoscopic variation, accounting for only 10% of retrograde cholangiopancreatographies using endoscopic approach (ERCP). However, it facilitated selective biliary catheterization (SBC) in our patient, as one might have expected.