Plant growth regulators such as mepiquat chloride (MC) and chlormequat (CCC) are used to establish the balance between vegetative generative in cotton. This study was conducted compare different doses application time of CCC with MC un-treatment (control). The seven treatments including control (non-treatment), T1 (three sprays chloride), T2 (two T3 (0.4 L ha-1 CCC), T4 (0.5 T5 (0.6 CCC) T6 (0....

Polyethylene glycol dinitrates (PEGN) with molecular weights between 400 and 20 000 g·mol-1 were prepared from polyethylene glycols by esterification with nitric acid/sulfuric acid in dichloromethane. The products were characterized by gel permeation chromatography. The yield of PEGN increases with increasing reaction temperature (0-40 °C) however large liberation of nitrogen oxides was observe...

This work is concerned with polyethylene terephthalate (PET) saponification by different potassium compounds in various polyols as well biodiesel’s main by-product, crude glycerol. It was established that reaction conditions (initial PET/K+ molar ratio, time, etc.) could control the molecular weight of obtained oligomeric products. In ethylene glycol, depolymerization proceeds rapidly, and alre...

1. The effect of iodination on the distribution of peptide hormones into the aqueous two-phase dextran-polyethylene glycol system and on the solubility of these hormones in aqueous polyethylene glycol and in water was assessed. Hormones that were studied included insulin, glucagon and parathyroid hormone. 2. The partition coefficient of native insulin in the dextran-polyethylene glycol system s...

BACKGROUND In bronchial asthma, inflammatory cells infiltrating the airway mucosa release oxygen radicals that cause tissue damage and amplify the airway inflammation. Antioxidant enzymes may have a protective effect on the airways. OBJECTIVE The purpose of this study was to determine whether treatment of a rabbit model of chronic allergic asthma with the antioxidant enzyme superoxide dismuta...

objective: dendrimers are three-dimensional nanostructures that have numerous applications in medicine, including drug delivery and imaging. although anionic dendrimer polyethylene glycol–citrate has a high potential to increase solubility of water-insoluble drugs and drug delivery, its multi-step synthesis procedure is time consuming. in addition, toxic substances such as dichloromethane are u...

BACKGROUND Constipation is a common clinical problem. Lactulose and Polyethylene Glycol (PEG) are both commonly used osmotic laxatives that have been shown to be effective and safe treatments for chronic constipation. However, there is no definitive data as to which provides the best treatment. OBJECTIVES To identify and review all relevant data in order to determine whether Lactulose or Poly...

BACKGROUND Several studies with erythropoiesis-stimulating agents claim that maintenance therapy of renal anaemia may be possible at extended dosing intervals; however, few studies were randomized, results varied, and comparisons between agents were absent. We report results of a multi-national, randomized, prospective trial comparing haemoglobin maintenance with methoxy polyethylene glycol-epo...

BACKGROUND: Constipation is one of the common problems in childhood and consists of 3% of referrals to pediatricians and 25% of pediatric gastroenterologists. Aperients are common alternatives for treating chronic constipation. The present study aimed to compare the efficacy of three laxatives [polyethylene glycol (PEG), magnesium hydroxide, and lactulose]. METHODS: In this randomized clinical ...