O mandacaru (Cereus jamacaru DC. subsp. jamacaru) e o facheiro (Pilosocereus pachycladus F.Ritter pernambucoensis (F.Ritter) Zappi) são duas cactáceas colunares endêmicas do semiárido brasileiro, região caracterizada por apresentar áreas em que ocorre déficit hídrico. Assim sendo, este estudo objetivou avaliar efeito estresse hídrico sobre a germinação vigor de sementes dessas espécies sob dife...

One of ways to increase resistance agricultural plants abiotic stresses is the use biofertilizers with anti-stress and growth-regulating properties. They improve absorption nitrogen phosphorus from organic fertilizers soil. The purpose research was study sowing qualities seeds, morphological indicators spring barley seedlings after presowing seed treatment under conditions sufficient humidifica...

Water stress caused by drought affects the productivity of sugarcane crop. A breeding alternative is selection drought-tolerant cultivars. The objective this study was in vitro screening cultivars tolerant to water using polyethylene glycol (PEG) as a stressing agent. Cultivars (cv) Mex 69-290, CP 72-2086, 79-431 and MOTZMex 92-207 were subjected different concentrations PEG 6000 (0, 3, 6 9% w/...

     Ibuprofen solid dispersions were prepared by the solvent and fusion-solvent methods using polyethylene glycol (PEG), polyvinylpyrrolidone (PVP), eudragit RS PO, eudragit RL PO and hydroxypropylmethylcellulose (HPMC) as carriers to improve physicochemical characteristics of ibuprofen. The prepared solid dispersions were evaluated for the flowability, solubility characteristics and dissoluti...

Noncytotoxic spleen cells from BALB/c mice bearing 15- to 26-mm (but not 29-mm) s.c. MOPC-315 tumors that were cultured in medium containing 2% polyethylene glycol 6000 (PEG) developed substantial levels of anti-MOPC-315 cytotoxicity as assayed by 51Cr release. The level of cytotoxicity obtained increased with progression of tumor growth. Addition of mitomycin C-treated stimulator tumor cells a...

Noncytotoxic spleen cells from BALB/c mice bearing 15to 26-mm (but not 29-mm) s.c. MOPC-315 tumors that were cultured in medium containing 2% polyethylene glycol 6000 (PEG) developed substantial levels of anti-MOPC-315 cytotoxicity as assayed by 51Cr release. The level of cytotoxicity obtained increased with progression of tumor growth. Addition of mitomycin C-treated stimulator tumor cells and...

The aim of the study was to assess the role of salicylic acid (SA) and abscisic acid (ABA) in osmotic stress tolerance of wheat seedlings. This was accomplished by determining the impact of the acids applied exogenously on seedlings grown under osmotic stress in hydroponics. The investigation was unique in its comprehensiveness, examining changes under osmotic stress and other conditions, and t...

The study determined the electrical performance of dye sensitized solar cell by using electrolyte hydrogels Polyethylene Glycol 4000 and 6000. experimental work consisted Dye Sensitized Solar Cell (DSSC) structure arrangement, assembly DSSC layers, measurement DSSC. resistances TCO glass were 1.1 kΩ 14.9 kΩ. concentration thickening agents in solution 5%, 10%, 15%, a control sample without addi...