Prepregs were B-staged for about 3%. The cure characterization, T(g) and flow behavior were evaluated using differential scanning calorimetry and rheological analysis. Results showed that increasing the rubber content caused the following effects: (a) delay in gel time of prepregs, (b) increase in activation energy of prepregs, and (c) decrease in total heat of curing reaction. It is interesting that NBR increased the tack of epoxy/glass prepreg but, had no effect on its resin flow behavior. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123:
“Central nervous system (CNS) involvement is a serious, ABT-263 Apoptosis inhibitor and frequently fatal, complication of acute leukemias and very aggressive lymphomas. In patients with no evidence of CNS involvement at the time of diagnosis, the decision to include CNS prophylaxis in the treatment regimen 3-MA supplier should be based on cytologic diagnosis and other risk factors. Patients
with a risk of CNS relapse greater than 10% should receive CNS prophylaxis with high-dose systemic chemotherapy, intrathecal therapy, radiation, or a combination thereof. The most commonly used systemic and intrathecal chemotherapies are methotrexate and cytarabine. Liposomal cytarabine, which increases CNS bioavailability and decreases the number of lumbar punctures needed, is our preference for intrathecal therapy. We usually reserve radiation therapy for patients who may not tolerate other forms CAL-101 clinical trial of CNS prophylaxis. Patients with evidence of CNS involvement, either at diagnosis or relapse, should be treated until CNS disease clearance or dose-limiting toxicity is reached. Recent studies suggest that autologous stem cell transplantation may offer longer survivals for patients with CNS involvement and should be considered for patients who can tolerate the procedure. The use of rituximab in CNS prophylaxis and treatment has not yet been clearly delineated, but initial reports indicate that this agent and others may soon be available as an effective and tolerable CNS-directed therapy for lymphomas.”
“The role of root systems in drought tolerance is a subject of very limited information compared with above-ground responses.
Adjustments to the ability of roots to supply water relative to shoot transpiration demand is proposed as a major means for woody perennial plants to tolerate drought, and is often expressed as changes in the ratios of leaf to root area (A(L):A(R)). Seasonal root proliferation in a directed manner could increase the water supply function of roots independent of total root area (A(R)) and represents a mechanism whereby water supply to demand could be increased. To address this issue, seasonal root proliferation, stomatal conductance (g(s)) and whole root system hydraulic conductance (k(r)) were investigated for a drought-tolerant grape root system (Vitis berlandierixV. rupestris cv. 1103P) and a non-drought-tolerant root system (Vitis ripariaxV. rupestris cv.