Interaction of pure and Vn-doped (8, 0), (12, 0) and (16, 0) boron nitride nanotubes with CO molecules was studied using B3LYP/6-311++G(d) theoretical level. Substituting V instead of B atoms, increased the reactivity of nanotube. From the results, the complex stability depends on the direction and the number of the CO molecules interacted with the nanotube. In this work, the quantum...

Angiotensin-converting enzyme (ACE) inhibitors including quinapril could exert a protective effect on cardiovascular system through endothelial system in normoglycemic and diabetic rats. The present experimental work was designed to study the vascular reactivity of aortic ring segments isolated from streptozotocin (STZ)-diabetic rats treated for 4 weeks with nitro-L-arginine-methyl ester (L-NAM...

In this study, B12N12 Nano ring has been selected because it consist of four 6-side rings and polar bonds B-N which in comparison with non-polar bonds C-C, is more suitable for the study of the absorption of other compounds. So reactivity and stability of Benzene alone and in the presence B12N12 nano ring field checked. To determine the non-bonded interaction energies between Benzene and B12N12...

Environmental concerns over automotive exhaust emissions and consumer demand for higher fuel efficiency have led to the development of low-temperature combustion concepts. The reactivity-controlled compression ignition (RCCI) engine is one among them has potential reduce NOx smoke simultaneously. In this concept, a low-reactivity injected into intake port another high-reactivity cylinder direct...

inhalational insulin was withdrawn from the market due to its potential to produce airway hyper-reactivity and bronchoconstriction. so the present study was designed to explore the acute effects of insulin on airway reactivity of guinea pigs and protective effects of salbutamol and ipratropium against insulin induced airway hyper-responsiveness on isolated tracheal smooth muscle of guinea pig. ...

Abstract Reactivity, or the phenomenon by which subjects tend to modify their behavior in virtue of being studied upon, is often cited as one most important difficulties involved social scientific experiments, and yet, there date a persistent conceptual muddle when dealing with many dimensions reactivity. This paper offers framework for reactivity that draws on an interventionist approach causa...

FMRI BOLD responses to changes in neural activity are influenced by the reactivity of the vasculature. By complementing a task-related BOLD acquisition with a vascular reactivity measure obtained through breath-holding or hypercapnia, this unwanted variance can be statistically reduced in the BOLD responses of interest. Recently, it has been suggested that vascular reactivity can also be estima...

OBJECTIVE To examine blood pressure (BP) in sedentary African American women during two exercise intensities on a cycle and treadmill at fixed heart rate (HR) values. METHODS Blood pressure (BP) and heart rate (HR) were assessed in 44 women (age 33.1 +/- 8.2 years) during cycling and treadmill walking at 40% and 60% heart rate reserve (HRR). Systolic blood pressure (SBP) and diastolic blood p...