Demonstration Technique for Animal Science Extension in Causing Change of Small Dairy Milking Management

Two extension methods were compared within a mastitis awareness program: 1) traditional method of writing articles and conducting county meetings, 2) demonstration technique with personal contacts at the farm. A random county survey before and after the project showed 8% more dairymen adopted the teat dip-dry cow therapy procedures in the counties where the demonstration project was. Milk company officials, fieldmen, laboratory personnel, county dairy agents, Dairy Herd Improvement supervisors cooperatively helped to contact over 750 dairies, 347 of which actively participated. Participation of dairymen was directly proportional to the number of visits the fieldman made to each dairy. Changes in milk production and cell counts for all herds were the criteria to measure the value of the program. Milk production increased for the treatment group .88 kg/cow per day compared to control herds. Treatment herds averaged the lowest bulk tank somatic cell count, 770,000 cells/ml throughout the project.     

Contingency management to enhance naltrexone treatment of opioid dependence: A randomized clinical trial of reinforcement magnitude.

Fifty-five detoxified opioid-dependent individuals were randomly assigned to 1 of 3 treatments delivered over 12 weeks: standard naltrexone maintenance, standard naltrexone plus low-value contingency management (CM), or standard naltrexone plus high-value CM. Results suggest that (a) assignment to either CM condition was associated with significant reductions in opioid use over time compared with standard naltrexone treatment; (b) contrasts of high- versus low-value reinforcement magnitude were not significant, suggesting no relative benefit of higher over lower value incentives in this population; (c) participants assigned to either CM group reported significant reductions in readiness to change compared with participants assigned to standard naltrexone treatment. These findings suggest that targeted behavioral therapies can play a substantial role in broadening the utility of available pharmacotherapies. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Evolution of ozone for the bleaching of paper pulps

Although ozone has been studied seriously as a substitute for chlorine in the bleaching of pulp for paper making since 1949, it has only been since 1992 that ozone has begun to reach its full‐scale commercial potential. In this evolution, ozone has been aided immeasurably by environmental pressures to diminish the discharge of halogenated organics in pulp mill wastewaters. Thanks to the incorporation of ozonation into bleach processes, not only is the creation of halogenated organics minimized (and even eliminated in some cases), but this allows some of the processing liquors to be recovered and volumes of bleach plant effluents to be reduced. As a consequence, this not only decreases the volume of wastewater being discharged to the receiving water bodies, but also increases the potential for the Totally Effluent‐Free (TEF) bleached pulp mill to become a future reality.

Ozone's evolution in this rapidly growing industry is traced, and some characteristics of the 14 full‐scale pulp mills currently using and five additional planning to use ozone for pulp bleaching in various parts of the world will be described.     

Ribbon Si solar cells with efficiencies over 18% by hydrogenation of defects

We have fabricated 4 cm² solar cells on String Ribbon Si wafers and edge-defined film-fed grown (EFG) Si wafers with using a combination of laboratory and industrial processes. The highest efficiency on String Ribbon Si wafer is 17.8% with an open circuit voltage (V_oc) of 620 mV, a short circuit current density (J_sc) of 36.8 mA/cm² and a fill factor (FF) of 0.78. The maximum efficiency on EFG Si is 18.2% with a V_oc of 620 mV, a J_sc of 37.5 mA/cm² and a FF of 0.78. These are the most efficient ribbon Si devices made to date, demonstrating the high quality of the processed Si ribbon and its potential for industrial cells. Co-firing of SiN_x and Al by rapid thermal processing was used to boost the minority carrier lifetime of bulk Si from 3–5 μs to 70–100 μs. Photolithography-defined front contacts were used to achieve low shading losses and low contact resistance with a good blue response. The effects of firing temperature and time were studied to understand the trade-off between hydrogen retention and Al-doped back surface field (Al-BSF) formation. Excellent bulk defect hydrogenation and high-quality thick Al-BSF formation was achieved in a very short time (1 s) at firing temperatures of 740–750 °C. It was found that the bulk lifetime decreases at annealing temperatures above 750 °C or annealing time above 1 s due to dissociation of hydrogenated defects.     

Therapist competence and patient outcome in interpersonal psychotherapy of depression.

This article examines whether the therapist's level of competence in conducting interpersonal psychotherapy of depression (IPT) is associated with patient improvement. Data from 35 depressed outpatients treated for up to 16 sessions as part of the IPT training program for the National Institute of Mental Health Treatment of Depression Collaborative Research Program were used. Multiple regression analyses were performed to predict outcome from 4th-session ratings of therapist skill while controlling for important pretreatment patient characteristics including level of depression, social adjustment, and expectations of treatment outcome. The results showed that measures of therapist performance contributed significantly to the prediction of patient-rated change and change in the apathy associated with depression but not to measures of social adjustment at 16 weeks. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Multiple jeopardy: risk and protective factors among addicted mothers' offspring

Objectives of this study were to ascertain risk and protective factors in the adjustment of 78 school-age and teenage offspring of opioid- and cocaine-abusing mothers. Using a multimethod, multiinformant approach, child outcomes were operationalized via lifetime psychiatric diagnoses and everyday social competence (each based on both mother and child reports), and dimensional assessments of symptoms (mother report). Risk/protective factors examined included the child sociodemographic attributes of gender, age, and ethnicity, aspects of maternal psychopathology, and both mother's and children's cognitive functioning. Results revealed that greater child maladjustment was linked with increasing age, Caucasian (as opposed to African American) ethnicity, severity of maternal psychiatric disturbance, higher maternal cognitive abilities (among African Americans) and lower child cognitive abilities (among Caucasians). Limitations of the study are discussed, as are implications of findings for future research.     

Contingency management treatments: Reinforcing abstinence versus adherence with goal-related activities.

Contingency management (CM) interventions usually reinforce submission of drug-negative specimens, but they can also reinforce adherence with goal-related activities. This study compared the efficacy of the 2 approaches. Substance-abusing outpatients (N = 131) were randomly assigned to 1 of 3 12-week treatments: standard treatment (ST), ST with CM for submitting negative urine toxicology screens, or ST with CM for completing goal-related activities. CM patients remained in treatment longer and achieved more abstinence than ST patients, but the CM condition that reinforced submission of negative samples resulted in better outcomes than the CM condition that reinforced goal-related activities. Abstinence at 6- and 9-month follow-ups did not differ by group, but longest duration of abstinence achieved during treatment was associated with abstinence posttreatment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)