Conserving All the Pollinators: Variation in Probability of Pollen Transport among Insect Taxa

As concern about declining pollinator populations mounts, it is important to understand the range of insect taxa that provide pollination services. We use pollen transport information acquired over three years in two habitats at Badlands National Park, South Dakota, USA, to compare probabilities of pollen transport among insect taxa and between sexes of bees. Sampling was conducted on 1-ha plots, eight in sparse vegetation (May–October samples; N = 74 surveys) and 12 in wheatgrass prairie vegetation (June–July samples; N = 87 surveys). Insects contacting reproductive parts of flowers were netted, placed individually into tubes charged with ethyl acetate, then transferred to individual labeled glassine envelopes for transport to the lab. Pollen was removed from insect bodies with fuchsin jelly cubes which were then mounted on microscope slides for identification. The probability of taxa transporting only conspecific pollen (with respect to the plant species upon which it was collected), mixed pollen, only non-conspecific, or no pollen was estimated with multinomial logistic regression. Bees were the most commonly captured flower visitor and carried by far the most pollen (females \u3e10× as much as males), but they were most likely to carry mixed pollen loads. Flies, beetles, and wasps were also common flower visitors and beetles were most likely to carry only conspecific pollen. Ants and diurnal lepidopterans were unlikely to carry any pollen. Bees, beetles, flies, and wasps varied in the timing and habitat in which they were most likely to transport pollen, suggesting that all played a role in providing robust pollination services

Annotated Bibliography of Research in the Teaching of English

Twice a year, in the May and December issues, RTE publishes a selected bibliography Of recent research in the teaching of English. Most of the studies listed appeared during the six-month period preceding the complication of the bibliography (January through lune, 1997, for the present bibliography), but some studies that appeared earlier are occasionally included. The listing is selective; it makes no attempt to include all research and research-related studies that appeared in the period under review. Comments on the bibliography and suggestions about items for inclusion may be directed to the bibliography editors. We encourage you to send your suggestions to [email protected] or [email protected]. You may also submit comments or recommend publications through the Annotated Bibliography page of RTE\u27s World Wide Web site at http://members.aol.com/RTEngl/rtehome.htm

The Effect of Hamstring Contractions in the Activation of the Abdominal Muscles during a Standard Abdominal Crunch

Purpose: The purpose of this study was to determine the effect of a hamstring contraction on the abdominal musculature during a standard crunch. Studies in the past have looked at abdominal and core strengthening, exercise equipment, and exercise techniques and their effect on abdominal electromyography (EMG). Few published studies have looked at the effect on the abdominals during a modified crunch, which is a hamstring contraction during a standard crunch. Methods: Participants (n=30) for this study were between the ages of 18 and 60 with no history of acute or chronic back pain or major abdominal surgery. EMG was used to record the activity of four muscle groups including the: upper rectus abdominus (URA), lower rectus abdominus (LRA), external obliques (EO), and the biceps femoris during a standard crunch and also during a modified crunch. Data analysis compared EMG output to each participant\u27s individual maximal voluntary contraction (MVC) for each muscle group analyzed. Results: There was a significant (p\u3c0.05) increase in the average mean difference in the LRA of + 26.89% and EO of +46.3% in EMG activity during the modified crunch. URA displayed an increase of +2.25%; however, it was not found to be statistically significant. Discussion: In this study there was an increase in abdominal EMG output for the modified crunch; however, other factors that need to be considered include: the effects of gender, age, previous abdominal training, influence of pathologies, and other musculature involvement

Relationship of surface changes to metal leaching from tungsten composite shot exposed to three different soil types

Physical changes that occur on the surface of fired shots due to firing and impact with soil may increase the dissolution of muniton metals. Increased metal dissolution could potentially increase metal transport and leaching, affecting metal concentrations in surface and groundwater. This research describes the relationship between the surface changes on fired tungsten–nickel–iron (94% W:2% Ni:4% Fe) composite shots and metals leaching from those shots. Tungsten composite shot was fired into, and aged in, three soil types (Silty Sand, Sandy Clay, and Silt) in mesoscale rainfall lysimeters to simulate live-fire conditions and subsequent interactions between the metals of the composite and soil. Leachate, runoff, and soil samples were collected from the lysimeters and analyzed for metal content. The shots were analyzed using scanning electron microscopy (SEM) to evaluate surface changes. SEM results indicated that a soil’s particle size distribution initially affected the amount of metal that was sheared from the surface of the fired W-composite shots. Shearing was greatest in soils with larger soil particles (sand and gravel); shearing was least in soils composed of small soil particles (fines). Increased metallic shearing from the shot’s surface was associated with increasedWdissolution, compared to controls, following a simulated 1 year soil aging

Effect of counseling by paraprofessionals on depression, anxiety, somatization, and functioning in Indonesian torture survivors

The Indonesian population has faced political violence, victimization, and torture throughout the last 70 years. Due to the scarcity of mental health professionals in many low and middle-income countries, counseling programs are increasingly utilizing paraprofessionals to provide support to the affected population as a strategy of task shifting. In this article, we would like to examine the effectiveness of counseling services provided by such trained paraprofessionals. This study was part of program evaluation to determine whether the participants (torture survivors) improved after counseling services provided by trained paraprofessionals in Indonesia. Local communities were invited to join the psychosocial program created and implemented by an NGO in 2005. The 178 participants were recruited from Jakarta, Papua, and Aceh, Indonesia for the program, which aimed to help survivors of violence suffering from “heavy hearts.” The intervention lasted three months, and the follow-up intake was conducted after four months. The results indicated the participants’ anxiety symptoms, depressive symptoms, somatic symptoms, and functioning improved from the intake to the follow-up. The program appeared to have been effective in reducing the participants’ symptoms and impairment in functioning. This indicates that in countries where there is a scarcity of mental health professionals, working with paraprofessionals has the potential to help survivors of torture and violence

Development and Validation of eRADAR: A Tool Using EHR Data to Detect Unrecognized Dementia.

ObjectivesEarly recognition of dementia would allow patients and their families to receive care earlier in the disease process, potentially improving care management and patient outcomes, yet nearly half of patients with dementia are undiagnosed. Our aim was to develop and validate an electronic health record (EHR)-based tool to help detect patients with unrecognized dementia (EHR Risk of Alzheimer's and Dementia Assessment Rule [eRADAR]).DesignRetrospective cohort study.SettingKaiser Permanente Washington (KPWA), an integrated healthcare delivery system.ParticipantsA total of 16 665 visits among 4330 participants in the Adult Changes in Thought (ACT) study, who undergo a comprehensive process to detect and diagnose dementia every 2 years and have linked KPWA EHR data, divided into development (70%) and validation (30%) samples.MeasurementsEHR predictors included demographics, medical diagnoses, vital signs, healthcare utilization, and medications within the previous 2 years. Unrecognized dementia was defined as detection in ACT before documentation in the KPWA EHR (ie, lack of dementia or memory loss diagnosis codes or dementia medication fills).ResultsOverall, 1015 ACT visits resulted in a diagnosis of incident dementia, of which 498 (49%) were unrecognized in the KPWA EHR. The final 31-predictor model included markers of dementia-related symptoms (eg, psychosis diagnoses, antidepressant fills), healthcare utilization pattern (eg, emergency department visits), and dementia risk factors (eg, cerebrovascular disease, diabetes). Discrimination was good in the development (C statistic = .78; 95% confidence interval [CI] = .76-.81) and validation (C statistic = .81; 95% CI = .78-.84) samples, and calibration was good based on plots of predicted vs observed risk. If patients with scores in the top 5% were flagged for additional evaluation, we estimate that 1 in 6 would have dementia.ConclusionThe eRADAR tool uses existing EHR data to detect patients with good accuracy who may have unrecognized dementia. J Am Geriatr Soc 68:103-111, 2019

Blurring the Boundaries: Reflecting on PDS Roles and Responsibilities through Multiple Lenses

It is well documented that successful Professional Development School (PDS) initiatives are contingent on trusting relationships between the university and school districts

Local brain connectivity and associations with gender and age

ABSTRACTRegional homogeneity measures synchrony of resting-state brain activity in neighboring voxels, or local connectivity. The effects of age and gender on local connectivity in healthy subjects are unknown. We performed regional homogeneity analyses on resting state BOLD time series data acquired from 58 normal, healthy participants, ranging in age from 11 to 35 (mean 18.1±5.0 years, 32 males). Regional homogeneity was found to be highest for gray matter, with brain regions within the default mode network having the highest local connectivity values. There was a general decrease in regional homogeneity with age with the greatest reduction seen in the anterior cingulate and temporal lobe. Greater female local connectivity in the right hippocampus and amygdala was also noted, regardless of age. These findings suggest that local connectivity at the millimeter scale decreases during development as longer connections are formed, and underscores the importance of examining gender differences in imaging studies of healthy and clinical populations