Improved stability of Co-Ferrierite catalyst by Mn in dry–wet cycles of lean CH4-SCR of NOx

Ion-exchanged Co, Mn and Co,Mn-FER zeolite was tested as catalyst for the selective reduction of NO_x with CH₄ in the presence of O₂ under dry and wet (1 vol% H₂O) cycles. Under hydrothermal conditions Co-FER undergoes a progressive loss of activity, while Co,Mn-FER catalyst shows an increased water resistance. UV-VIS spectra of monometallic and bimetallic catalysts collected before and after dry–wet catalytic cycles show a change of Co species distribution within the zeolite upon heating and exposure to water. However, the presence of Mn prevents the decrease in the population of the most active Co²⁺ site in the presence of water and stabilises the catalytic activity, as evidenced in 80 h time on stream run.     

Children's Depression Inventory: Construct and discriminant validity across clinical and nonreferred (control) populations.

[Correction Notice: An erratum for this article was reported in Vol 55(6) of Journal of Consulting and Clinical Psychology (see record 2008-10746-001). An error occurred in Table 3. Specifically, for the three-factor solutions, the coefficient of congruence between the first factor of the combined sample and the first (rather than the second) factor of the nonreferred sample should read "93."] The construct and discriminant validity of the Children's Depression Inventory (CDI) was evaluated for a large child and adolescent sample of clinical inpatients (n&=&153) and demographically comparable nonreferred subjects (n&=&153). Principal component analyses of the overall sample, using separate groups of clinical and nonreferred samples, found two- and three-factor models with optimal simple structure and clinical meaningfulness. These factors characterized Depressive Affect, Oppositional Behavior, and Personal Adjustment. The first two factors exhibited adequate internal consistency and correspondence across samples, whereas the third factor was strongest for nonreferred subjects. All three factor scores entered a significant discriminant function and correctly classified most nonreferred and clinical subjects. However, only Depressive Affect and Oppositional Behavior entered into the discriminant function that distinguished depressive and conduct-disorder subjects from nonreferred subjects. The percentage of nonreferred subjects who were correctly categorized ranged from 70.4 to 71.6, whereas the percentage of correctly classified clinical subjects ranged from 25 to 60. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Results of surgical resection in patients over the age of 70 years with non small-cell lung cancer

Calcium release from the sarcoplasmic reticulum (SR) depending on depolarization of the transverse tubular membrane (TTM) caused by rapid ionic replacement was measured in skeletal muscle triadic vesicles using a stopped-flow apparatus and Fura-2, a membrane-impermeable Ca2+ indicator. Calcium release was triggered by an increase in the magnitude of depolarization. This Ca2+ release was inhibited by ruthenium red, digoxin and dantrolene, and enhanced by caffeine. Thus, Ca2+ release was found to occur through the SR Ca2+ release channel via TTM depolarization and to be able to cause skeletal muscle contraction. Calcium release curves could be divided into two phases. In contrast to other previous studies, in the fast phase the amount of released Ca2+ increased with an increase in the magnitude of depolarization but the Ca2+ release rate did not; on the other hand, in the slow phase the Ca2+ release rate increased but the amount of Ca2+ did not. Furthermore, the Ca2+ release rate was controlled by the luminal Ca2+ concentration of the SR only in the fast phase. These independent dual kinetics of Ca2+ release were explained by the calsequestrin regulation model.     

Self-reported compliance with diabetes self-management during pregnancy

OBJECTIVE: The current study examined regimen compliance in pregnant women with pre-existing (overt) diabetes across multiple self-care tasks at three times during the pregnancy: mid-second, early third, and late third trimesters. METHOD: Forty-nine pregnant women with Type I (68%) or Type II (32%) diabetes completed measures to assess compliance with the diabetic regimen, major and minor life stressors, and social support for the diabetic regimen. RESULTS: Pregnant women with overt diabetes generally reported being compliant with their self-care regimen. There were, however, notable differences in reported compliance levels across different regimen tasks. Specifically, 74 to 79 percent of women reported being always compliant with dietary recommendations compared to 86 to 88 percent for insulin administration, 85 to 89 percent in managing insulin reactions, and 94 to 96 percent for glucose testing. Furthermore, stress in the form of major and minor life events and regimen-related social support were significantly related to self-reported compliance with dietary recommendations. There was no relationship between compliance and blood glucose levels. CONCLUSIONS: These findings suggest that psychiatric consultants focus on ways to increase social support as one means of improving compliance in pregnant women with diabetes.