GaP betavoltaic cells as a power source

Maximum power output for the GaP cells of this study was found to be on the order of 1 microW. This resulted from exposure to 200 and 40 KeV electrons at a flux of 2 x 10(exp 9) electrons/sq cm/s, equivalent to a 54 mCurie source. The efficiencies of the cells ranged from 5 to 9 percent for 200 and 40 KeV electrons respectively. The lower efficiency at higher energy is due to a substantial fraction of energy deposition in the substrate, further than a diffusion length from the depletion region of the cell. Radiation damage was clearly observed in GaP after exposure to 200 KeV electrons at a fluence of 2 x 10(exp 12) electrons/sq cm. No discernable damage was observed after exposure to 40 KeV electrons at the same fluence. Analysis indicates that a GaP betavoltaic system would not be practical if limited to low energy beta sources. The power available would be too low even in the ideal case. By utilizing high activity beta sources, such as Sr-90/Y-90, it may be possible to achieve performance that could be suitable for some space power applications. However, to utilize such a source the problem of radiation damage in the beta cell material must be overcome

The Drosophila genome nexus: a population genomic resource of 623 Drosophila melanogaster genomes, including 197 from a single ancestral range population.

Hundreds of wild-derived Drosophila melanogaster genomes have been published, but rigorous comparisons across data sets are precluded by differences in alignment methodology. The most common approach to reference-based genome assembly is a single round of alignment followed by quality filtering and variant detection. We evaluated variations and extensions of this approach and settled on an assembly strategy that utilizes two alignment programs and incorporates both substitutions and short indels to construct an updated reference for a second round of mapping prior to final variant detection. Utilizing this approach, we reassembled published D. melanogaster population genomic data sets and added unpublished genomes from several sub-Saharan populations. Most notably, we present aligned data from phase 3 of the Drosophila Population Genomics Project (DPGP3), which provides 197 genomes from a single ancestral range population of D. melanogaster (from Zambia). The large sample size, high genetic diversity, and potentially simpler demographic history of the DPGP3 sample will make this a highly valuable resource for fundamental population genetic research. The complete set of assemblies described here, termed the Drosophila Genome Nexus, presently comprises 623 consistently aligned genomes and is publicly available in multiple formats with supporting documentation and bioinformatic tools. This resource will greatly facilitate population genomic analysis in this model species by reducing the methodological differences between data sets

'GR 7' Grape

'GR 7' is an early / mid-season red wine grape for use primarily in red wine blends. It is distinguished from other red wine grapes grown in cool climates by its high degree of winter hardiness, adaptation to mechanized production systems, and ability to survive in older plantings where other red wine grapes are lost due to tomato and tobacco ringspot virus infections. ?GR 7? is a highly productive, easy to manage cultivar, and is the sixth wine grape to be developed by the New York State Agricultural Experiment Station of Cornell University

Use of differential thermal analysis to quantify bud cold hardiness of grape selections and clones

Differential thermal analysis (DTA) was used to characterize primary bud mid-winter cold hardiness of Vitis spp. Bud hardiness reached a maximum and was rather stable during the months of January and February at Geneva, New York. Because cold tolerance increases during periods of prolonged cold, observed freezing temperature was adjusted on the basis of the freezing temperature of cv. Concord on the day of observation. DTA gives reproducible and meaningful estimates of bud freezing temperature. Such data account for at least 50 % of the among-cultivar variance in overall vine cold hardiness

Remaily Seedless Grape

Since the late 19th century when grape breeding began at the New York State Agricultural Experiment Station, a major goal has been to combine certain fruit attributes such as seedlessness, crisp texture, and adherent skin of Vitis vinifera L. table grapes with some of the vegetative characters such as disease resistance and cold hardiness of native American hybrid (V. labruscana, Bailey) grape cultivars

Prospective Cohort Study of Patients With Neck Pain in a Manual Therapy Setting: Design and Baseline Measures.

OBJECTIVES:The purpose of this study was to describe the design and baseline measurements of a prospective multicenter cohort study in patients with neck pain treated by Dutch manual therapists. Objectives of the study were to determine which patients seek help from a manual therapist, to describe usual care manual therapy in patients with neck pain, to examine the occurrence of nonserious adverse events after treatment, to describe predictors of adverse events, and to determine whether the occurrence of nonserious adverse events affect outcome after manual therapy care. METHODS:During a 3-month inclusion period, consecutive patients aged between 18 and 80 years presenting with neck pain in manual therapy practices in The Netherlands were included in the study. Baseline questionnaires included the Numeric Rating Scale, Neck Disability Index (NDI), Neck Bournemouth Questionnaire, Fear Avoidance Beliefs Questionnaire (FABQ), and Patient Expectancy List. Within the treatment episode, manual therapist clinical reasoning and applied interventions were registered and patients reported on adverse events. At the end of the treatment episode and at 12-month follow-up, pain intensity (Numeric Rating Scale), functional outcomes (NDI, Neck Bournemouth Questionnaire), personal factors (FABQ), and global perceived effect were measured. RESULTS:During the 3-month inclusion period, 263 participating manual therapists collected data on 1193 patients with neck pain. Most patients (69.4%) were female. The mean age was 44.7 (±13.7) years. The NDI showed overall mild disability (mean score 26%). Mean scores in pain intensity were moderate (4.8), and there was low risk of prolonged disability owing to personal factors (FABQ). CONCLUSION:This study provides information on baseline characteristics of patients visiting manual therapists for neck pain. In The Netherlands, patients seeking care of manual therapists are comparable to patients in other countries regarding demographics and neck pain characteristics

Identifying Patients with COPD in Need for Psychosocial Care Through Screening with the HSCL-25 and the CCQ Mental State

High levels of psychological distress are documented in patients with COPD. This study investigates the extent to which patients with a high score on the Hopkins Symptoms Checklist-25 (HSCL-25) or with a high score on the Mental State scale of the Clinical COPD Questionnaire (CCQ) endorse a need for psychosocial care, and investigates several characteristics of patients with a need. Outpatients with COPD of the Department of Pulmonary Diseases of a University Medical Center were assessed with the HSCL-25, CCQ and a question on need for psychosocial care. For patients indicating a need, the percentage of patients with HSCL-25 ≥39 was compared with the percentage of patients with CCQ Mental State >2 and tested with a Chi-square. In total 323 patients participated; 57% of them were distressed according to the HSCL-25 (≥39) and 20% according to the CCQ Mental State (>2); 28% reported a need for psychosocial care. For patients reporting a need for psychosocial care a higher percentage was identified by the HSCL-25 than by the CCQ Mental State (χ2 = 9.41, p <. 002) and they were younger than patients without a need (t = 4.48, p <. 001). No differences existed for sex, FEV1, FEV1% predicted or medical comorbidities. The HSCL-25 identified more patients in need than the CCQ Mental State scale. However, not all patients with a need were identified. No relationship was found between need for psychosocial care and illness variables or comorbidities. Distress screening is questioned as the most effective way to identity patients with COPD in need for psychosocial care

Normothermic machine perfusion of ischaemically damaged porcine kidneys with autologous, allogeneic porcine and human red blood cells

In porcine kidney auto-transplant models, red blood cells (RBCs) are required for ex-vivo normothermic machine perfusion (NMP). As large quantities of RBCs are needed for NMP, utilising autologous RBCs would imply lethal exsanguination of the pig that is donor and recipient-to-be in the same experiment. The purpose of this study was to determine if an isolated porcine kidney can also be perfused with allogeneic porcine or human RBCs instead. Porcine kidneys, autologous and allogeneic blood were obtained from a local slaughterhouse. Human RBCs (O-pos), were provided by our transfusion laboratory. Warm ischaemia time was standardised at 20 minutes and subsequent hypothermic machine perfusion lasted 1.5–2.5 hours. Next, kidneys underwent NMP at 37°C during 7 hours with Williams’ Medium E and washed, leukocyte depleted RBCs of either autologous, allogeneic, or human origin (n = 5 per group). During perfusion all kidneys were functional and produced urine. No macroscopic adverse reactions were observed. Creatinine clearance during NMP was significantly higher in the human RBC group in comparison with the allogeneic group (P = 0.049) but not compared to the autologous group. The concentration of albumin in the urine was significantly higher in the human RBC group (P <0.001) compared to the autologous and allogeneic RBC group. Injury marker aspartate aminotransferase was significantly higher in the human RBC group in comparison with the allogeneic group (P = 0.040) but not in comparison with the autologous group. Renal histology revealed glomerular and tubular damage in all groups. Signs of pathological hyperfiltration and microvascular injury were only observed in the human RBC group. In conclusion, perfusion of porcine kidneys with RBCs of different origin proved technically feasible. However, laboratory analysis and histology revealed more damage in the human RBC group compared to the other two groups. These results indicate that the use of allogeneic RBCs is preferable to human RBCs in a situation where autologous RBCs cannot be used for NMP

Analysis of the relationship between grapevine cultivars, sports and clones via DNA fingerprinting

DNA fingerprinting utilizing RAPD polymorphisms was employed to investigate the relationship among 16 grapevine cultivars and sports thought to have arisen from these cultivars. From 53 primers, a total of 464 bands were generated, of which 29 % were common to all genotypes tested. Cluster analysis classified all tested cultivars into two main groups (Vitis vinifera L. and V. x Labruscana Bailey) as expected. No polymorphism was detected among known clones of Chardonnay (Ch. clone 7, Ch. clone 78 and Ch. Geneva clone) or Pinot noir (P. n. clone 29, P. n. Geneva clone and P. n. Pernand). Pinot Meunier, Pinot gris, and Gamay Beaujolais displayed patterns indistinguishable from Pinot noir. Auxerrois and Melon showed unique patterns and may be classified as distinct cultivars. Chardonnay clone 7 shared 84 % of its bands with Pinot noir. There was more than 97 % RAPD amplicon homology between Niagara and two supposed sports, and between Concord and a red-fruited sport. Taking into account the error rate in scoring RAPD bands, the evidence is against the hypothesis that the three sports are distinct cultivars. While RAPD banding patterns could not distinguish between known clones, they were useful for distinguishing between phenotypically similar cultivars and for assessing the origins of cultivars thought to have originated as sports