instruction:
In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.
question:
Context: To find permanent prostate implant (PPI) pre-plan dosimetric parameters that predict post-implant D90 140 Gy.', 'Pre-plans were evaluated for 504 patients undergoing PPI with (125)I seeds for low or intermediate risk prostate cancer. Baseline patient and disease factors, numbers of seeds, ratios of number of seeds to available positions (occupancy proportion), and distances between the 100% isodose line and edge of the prostate (margin) planned for the whole prostate (WP), superior (S), inferior (I), anterior (A), and posterior (P) halves, SA, SP, IA, and IP quarters, and superior (ST), inferior (IT), and middle (MT) thirds, and anterior (AT) and posterior (PT) middle one-sixth segments were analyzed by post-implant D90 subset ( 140 Gy vs. < 140 Gy).', '20% had post-implant D90 < 140 Gy (mean: 128.0 Gy, range: 97.5-139.2) vs. 140 Gy (mean: 154.4 Gy, range: 140.0-193.5). The D90 140 Gy subset had larger AT and IA segment mean numbers of seeds (p = 0.01, 0.046), larger WP, S, A, SA, ST, AT, and MT segment mean margins (p = 0.01, 0.01, 0.001, 0.0001, 0.03, 0.005, 0.02), and lower PT segment occupancy proportion (p = 0.004). On multivariate analysis, independent predictors of post-implant D90 140 Gy were increased SA mean margin, no pre-implant 5--reductase inhibitor, higher pre-plan D90, decreased P occupancy proportion, no pre-implant hormone therapy, and decreased SP mean margin.\Question: Do pre-plan parameters predict post-implant D90 140 Gy for ( 125 ) I permanent prostate implants?
answer:
Higher occupancy proportion and larger margins anteriorly and reduced occupancy proportion, and smaller margins posteriorly on PPI pre-plans predict post-implant D90 140 Gy.

question:
Context: To assess the influence of moderate, acute weight loss on on-water rowing performance when aggressive nutritional recovery strategies were used in the two hours between weigh in and racing.', 'Competitive rowers (n = 17) undertook three on-water 1800 m time trials under cool conditions (mean (SD) temperature 8.4 (2.0) degrees C), each separated by 48 hours. No weight limit was imposed for the first time trial--that is, unrestricted body mass (UNR1). However, one of the remaining two trials followed a 4% loss in body mass in the previous 24 hours (WT(-4%)). No weight limit was imposed for the other trial (UNR2). Aggressive nutritional recovery strategies (WT(-4%), 2.3 g/kg carbohydrate, 34 mg/kg Na+, and 28.4 ml/kg fluid; UNR, ad libitum) were used in the first 90 minutes of the two hours between weigh in and performance trials.', 'WT(-4%) had only a small and statistically non-significant effect on the on-water time trial performance (mean 1.0 second, 95% confidence interval (CI) -0.9 to 2.8; p = 0.29) compared with UNR. This was despite a significant decrease in plasma volume at the time of weigh in for WT(-4%) compared with UNR (-9.2%, 95% CI -12.8% to -5.6%; p<0.001).\Question: Does acute weight loss followed by an aggressive nutritional recovery strategy have little impact on on-water rowing performance?
answer:
Acute weight loss of up to 4% over 24 hours, when combined with aggressive nutritional recovery strategies, can be undertaken with minimal impact on on-water rowing performance, at least in cool conditions.

question:
Context: Previously, we found unconscious (implicit) learning in subjects given subanesthetic, but not anesthetic, concentrations of isoflurane. Other investigators, using different learning tasks, have reported implicit learning at anesthetic concentrations. We investigated whether one of these tasks might provide a more sensitive test of implicit learning. In addition, to determine whether suppression of explicit or implicit learning is dose-dependent, we studied one of the tasks at three subanesthetic concentrations.', 'We applied a category-example task at 0.15, 0.28, and 0.4 minimum alveolar concentration (MAC) of isoflurane, and a behavior task only at 0.4 MAC. After anesthesia, we determined whether volunteers more frequently listed an example of a category (e.g., flute as an example of musical instrument) presented during anesthesia and/or demonstrated a behavior (touching ear, chin, or knee) suggested to them at 0.4 MAC.', 'Results from the category task indicated implicit learning only at 0.15 MAC, a concentration that also permitted significant explicit learning. Explicit learning was demonstrated at 0.28 but not at 0.4 MAC (ED50 of 0.20 MAC and ED95 of 0.4 MAC). Results from the behavior task revealed neither implicit nor explicit learning.\Question: Do subanesthetic concentrations of isoflurane suppress learning as defined by the category-example task?
answer:
The ED50 that suppressed explicit learning in our volunteers equaled that previously reported (0.2 MAC) for implicit learning in volunteers measured using a different task. Combined, these results suggest that less than 0.45 MAC isoflurane suppresses learning in volunteers.