In this study, the structural changes of alkali lignin induced by ozonation were investigated, and effect ozone-treated its mechanism on Avicel enzymatic hydrolysis was examined. The physicochemical properties analyzed FTIR, 1H-13C HSQC NMR, GPC. It revealed that ozone pretreatment increased content carboxyl and/or aldehyde groups negative zeta potential lignin, which enhanced electrostatic rep...

INTRODUCTION Point-of-care ultrasound (POCUS) is a novel technique for the assessment of jugular venous pressure. Distance education may allow for efficient dissemination of this technique. We compared online learning to a live course for teaching ultrasonography jugular venous pressure (u-JVP) to determine if these teaching methods yielded different levels of comfort with and use of u-JVP. M...

In the past decades, there has been great progress in development of organic and inorganic optical limiters with large nonlinear optical (NLO) response. Carbon-based materials, including carbon black suspension (CBS), singleand multi-walled carbon nanotubes (CNTs), 3] and some small p-electron systems, such as fullerenes, porphyrins, and phthalocyanines have been widely explored as advanced opt...

BACKGROUND Renal renin-angiotensin system (RAS) activation is one of the important pathogenic mechanisms in the development of diabetic nephropathy in type 2 diabetes. The aim of this study was to investigate the effects of a sodium-glucose co-transporter 2 (SGLT-2) inhibitor, dapagliflozin, on renal RAS in an animal model with type 2 diabetes. METHODS Dapagliflozin (1.0 mg/kg, OL-DA) or vogl...

Abstract By monitoring biomarkers in urine, personal exposure to selected chemical substances can be assessed. In this paper, we describe the of 7 benzophenone and 2 camphor UV-filters 11 metabolites polycyclic aromatic hydrocarbons (OH-PAHs) 454 urine samples collected from mothers new-borns an industrial (Karvina) reference area (Ceske Budejovice) over winter summer seasons. The analytical me...

A constructive method for investigating if a given nonlin-ear dynamic system subject to control constraints can be controlled to follow a desired curve in the state or output space is presented. If the method gives an aarmative answer we can compute a closed form expression of the corresponding state feedback control law. Specifying a family of parametrized curves, approximations of reachable s...

Presilphiperfolanols (also known as prebotrydials) are members of a family of natural products that are important biosynthetic precursors to diverse sesquiterpenoids (Figure 1).[i, ii, iii, iv] To date, four members of the group have been isolated: presilphiperfolan-1-ol (1),[v] 9-epi-presilphiperfolan-1-o l (2),[vi] presilphiperfolan-8-ol (3),[ii] and presilphiperfolan-9-ol (4),[vii] with 1 an...