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181.
Sheeber Lisa B.; Johnston Charlotte; Chen Mandy; Leve Craig; Hops Hyman; Davis Betsy 《Canadian Metallurgical Quarterly》2009,23(6):871
This study examined whether parents of adolescents experiencing depressive symptoms or disorder make more negative and fewer positive attributions for their adolescents’ behavior than do parents of nondepressed adolescents, and whether parental attributions for adolescents’ behavior contribute to parenting behavior, above and beyond the adolescents’ behavior. Parents and adolescents (76 girls and 48 boys) participated in videotaped problem-solving interactions (PSIs). Each parent subsequently watched the videotape and offered attributions for their adolescent’s behavior. In addition, parent and adolescent behavior during the PSIs was coded. Mothers and fathers in families of nondepressed adolescents made significantly fewer negative attributions for their children’s behavior than did parents in families of adolescents with diagnostic or subdiagnostic levels of depressive symptoms. Moreover, mothers’ and fathers’ negative attributions were related to greater levels of observed aggressive behavior and lower levels of observed facilitative behavior during the PSIs controlling for both demographic characteristics and the relative level of adolescent aggressive and facilitative behavior during the PSI. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
182.
Davis Betsy T.; Hops Hyman; Alpert Anthony; Sheeber Lisa 《Canadian Metallurgical Quarterly》1998,12(2):163
The purpose of this study was to examine child response patterns to parental conflict and assess their contribution to child functioning. The focus was on 3 potential child responses and their relation to later depressive and aggressive behavior. Direct observations and questionnaire data were collected on 156 2-parent families. Aggressive behavior showed the strongest sequential relation to interparental conflict and the strongest predictive relation to increased aggressive functioning. Gender differences were found in the use of child aggressive response patterns. Results for the relation between child responses and increases in depressive functioning were weaker than those found for aggressive functioning. The results provide support for the examination of child response patterns as a potentially rich area of exploration for understanding the family mechanisms affecting both aggressive and depressive functioning in children. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
183.
SL Dzemeshkevich AS Ivanov IE Rykunov LM Kuznetsova NA Trekova IV Poplavski? AE Belous IL Zhidkov Kh Koseros AA Eremenko NI Chaus 《Canadian Metallurgical Quarterly》1998,(6):49-53
Standard technique of establishment of interatrial anastomoses allows to carry out orthotopic transplantation of the heart quickly and reliably. However the accumulation of collective experience evidences about a number of unavoidable shortcomings of such operation: rhythm disturbances, worsening of hemodynamics in discordant atrial contractions of recipient and donor, atrio-ventricular valve insufficiency, thromboembolism, coronary fistulas. Since 1990 in RRCS 25 operations were carried out with the use of standard technique and we also met with the risk of developing the above complications. In experiment on 30 mongrel dogs the technique of anatomical, truly orthotopic transplantation of the heart with six anastomoses was developed: left pulmonary veins with a common cuff, separate anastomoses of the superior and inferior caval veins, anastomoses of aorta and pulmonary artery. Particular attention was paid to developing of original surgical modes for prophylaxis of stenoses in the area of anastomoses of pulmonary and caval veins. In 1997 the anatomical technique of heart transplantation was successfully introduced by us into clinical practice. Clinical electrophysiological, echocardiographic and functional examinations have confirmed the results of the experiments and have evidenced for substantial advantages of the anatomical technique of orthotopic transplantation of the heart. By reliability the new operation is not inferior to standard method of N. Shumway. 相似文献
184.
MR Goldberg BM Chapnick PD Joiner AL Hyman PJ Kadowitz 《Canadian Metallurgical Quarterly》1976,198(2):357-365
The interrelationship between prostaglandins (PGs) and bradykinin (BK) was studied in isolated canine saphenous veins. The hypothesis that PGs mediate the venoconstrictor effect of bradykinin was evaluated by determining the influence of low concentrations of indomethacin (Indo) (1 muM) or eicosa-5,8,11,14-tetraynoic acid (ETA) (3 muM), two inhibitors of PG synthesis, on cumulative concentration-response curves for BK or norepinephrine (NE). In the tissue bath, responses to BK improved with time while responses to NE did not vary. When strips were least responsive to BK, Indo and ETA enhanced these responses. When strips were most responsive to BK, neither inhibitor enhanced the responses. Neither Indo nor ETA altered responses to NE. Phentolamine (10(-8) M) did not alter responses to BK. These data suggest that endogenous PGs act to attenuate, rather than mediate, the venoconstrictor response to BK. Progressive enhancement of responses to BK of untreated saphenous vein strips is associated with a decreased ability of inhibitors of PG synthesis to enhance those responses also. Thus, there may be a time-related decrease in the ability of this preparation to synthesize PGs. From the present results, it cannot be determined whether saphenous veins in vivo are highly responsive or relatively unresponsive to the peptide. However, these data do suggest that PGs are a determinant of venous responsiveness to BK. 相似文献
185.
The mammotrophic activity of various serum samples was assessed on the mammary gland of pregnant rats, in organ culture. Insulin was added to the medium. Serum samples from virgin rats showed little activity, and variation in mammotrophic activity during the oestrous cycle was slight. During pregnancy a significant increase in proliferative activity was not seen during the first week, but around day 8-9 mammotrophic activity increased sharply. The activity showed maxima around days 12 and 19. A decrease in the activity between these maxima was not consistently observed. Mammotrophic activity was still present in sera collected during parturition, and 30 min after parturition. It had disappeared completely within 24 h. The mammotrophic factor detectable by organ culture in the serum of pregnant rats could be rat chorionic mammotrophin. Activity in the serum on day 0 and 1 of lactation was comparable to that of virgin rats, but some activity appeared on day 2. High actvities were foound frequently around day 4 to 6 of lactation. On other days the activity showed fluctuations without a definite pattern. Litter size was of minor importance but the combination of a larger litter size and fasting-overnight seemed to suppress the presence of mammotrophic activity in the serum. Nursing was important: after weaning the activity has disappeared, while renewed nursing after weaning resulted in the appearance of high levels of activity. The mitotic activity obtained with lactating rat serum in the culture was suppressed by addition of rabbit anti-rat prolactin serum to the medium. This suggests that the main mammotrophic factor detectable by organ culture in the serum of lactating rats, is prolactin. 相似文献
186.
Eric L. Hyman 《Energy》1984,9(1):1-13
We report on a survey of the consumption of wood and other biomass fuels by cottage industries in the province of Northern Luzon in the Philippines. These firms include producers of sugarcane wine, molasses, flue-cured tobacco, pottery, and salt as well as blacksmiths, restaurants, and bakeries. 相似文献
187.
188.
Comments on the article by T. J. Stachnik (see record 1980-10503-001) that states that psychotherapy may not be useful for health-habit modification and that psychologists should shift the emphasis of their work toward a concern for health-habit modification. The present author takes exception to this statement, stating that psychotherapy, is broadly defined to include behavior modification and hypnosis, is currently the treatment of choice for health-habit modification. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
189.
The initial phase of pulmonary edema development following intracranial pressure elevation was studied by means of transmission electron microscopy. Using perfusion fixation and application of a blood tracer (HRP horseradish peroxidase) the time sequence and site of fluid leakage out of pulmonary vessels was demonstrated: - passage of edema fluid through intercellular clefts of alveolar capillary endothelium - edema accumulation in alveolar interstitial tissue - draining of edema fluid from the alveolar septum to the interstitium of terminal bronchioli and to lymphatic vessels. An early interepithelial fluid leakage out of the alveolar wall remains questionable. 相似文献
190.
The repeated impact, or “bouncing,” of an elastic-plastic rod on a rigid surface, is treated by means of finite element analysis. A computationally convenient substructuring technique is utilized in the analytical treatment to account for the changing kinematic constraints. The time dependence is accounted for by means of a variable time step, direct integration procedure that has been successfully applied to a number of elasto-plastic dynamic response problems. This time integration procedure is at present being employed in a nonlinear crashworthiness study. It has been proven capable of providing an accurate prediction of a variety of multidimensional dynamic elastic-plastic responses. Additionally, the procedure has demonstrated its ability to account for an elastic-plastic dynamic response that includes plastic reflections from boundaries and interaction of plastic wave fronts. The merging of the substructuring technique and numerical time integration procedure has been accomplished. The cases discussed include an unloaded bar traveling at uniform velocity before impact with a rigid barrier, and a bar traveling toward the rigid surface and subject to forces that are applied and removed periodically. Both cases are motivated by questions concerning the elastic-plastic dynamic response of a crashed vehicle. The latter case, which suggests the term “bouncing problem,” has, in addition, applications to problems involving pneumatically driven tools. The response is described, starting with the instant of contact at the impacting end, is followed while elastic/plastic wave propagation extends to the free end, and continues to be treated as elastic/plastic reflections occur and return to the impacting end. Finally, the behavior of the rod as it leaves and possibly returns to the wall is discussed, and the dwell time as a function of elastic and elastic-plastic properties of the material is determined. 相似文献