Chemical Weed Control in Crops

Guide to chemical weed control in crops discusses stages of growth in field crops and calculating the amount of chemical to apply per acre. Included are safety precautions

HE 1015-2050: Discovery of a Hydrogen-deficient carbon star at high galactic latitude

Medium resolution spectral analysis of candidate Faint High Latitude Carbon (FHLC) stars from Hamburg/ESO survey has given us the potential to discover objects of rare types. Two primary spectral characteristics of R Coroanae Borealis (RCB) stars are hydrogen deficiency and weaker CN bands relative to C_{2} bands. They are also characterized by their characteristic location in the J-H, H-K plane with respect to cool carbon stars. From a spectral analysis of a sample of 243 candidate FHLC stars, we have discovered a hydrogen-deficient carbon (HdC) star HE 1015-2050, at high Galactic latitude. A differential analysis of its spectrum with that of the spectrum of U Aquarii (U Aqr), a well-known cool HdC star of RCB type, provides sufficient evidence to put this object in a group same as that of U Aqr. Further, it is shown that HE 1015-2050 does not belong to any of the C-star groups CH, C-R, C-N or C-J. Cool RCB stars form a group of relatively rare astrophysical objects; approximately 51 are known in the Galaxy and some 18 in the Large Magellanic Clouds (LMC) and five in Small Magellanic Cloud (SMC). The present discovery adds a new member to this rare group. Although its spectral characteristics and its location in the J-H vs H-K plane places HE 1015-2050 in the same group to which U Aqr belongs, extended photometric observations would be useful to learn if there is any sudden decline in brightness, this being a characteristic property of HdC stars of RCB type.Comment: 5 pages,3 figure

What happens in child and family social work supervision?

Supervision is fundamental to the social work profession. However, increasing concern has been expressed over the managerial capture of local authority social work and the use of supervision as a way of enabling management oversight (or surveillance) of practice. Despite the importance of supervision, we have little evidence about what happens when managers and child and family social workers meet to discuss casework and less about how supervision influences practice. In this study, 34 supervision case discussions were recorded. Detailed descriptions are given of what happens in supervision. Overall, case discussions operated primarily as a mechanism for management oversight and provided limited opportunity for reflection, emotional support or critical thinking. With reference to organizational context, it is suggested that these deficits result from a system that focuses too much on ‘what and when’ things happen and not enough on ‘how and why’

Evidence for a companion to BM Gem, a silicate carbon star

Balmer and Paschen continuum emission as well as Balmer series lines of P Cygni-type profile from H_gamma through H_23 are revealed in the violet spectra of BM Gem, a carbon star associated with an oxygen-rich circumstellar shell (`silicate carbon star') observed with the high dispersion spectrograph (HDS) on the Subaru telescope. The blue-shifted absorption in the Balmer lines indicates the presence of an outflow, the line of sight velocity of which is at least 400 km s^-1, which is the highest outflow velocity observed to date in a carbon star. We argue that the observed unusual features in BM Gem are strong evidence for the presence of a companion, which should form an accretion disk that gives rise to both an ionized gas region and a high velocity, variable outflow. The estimated luminosity of ~0.2 (0.03-0.6) L_sun for the ionized gas can be maintained by a mass accretion rate to a dwarf companion of ~10^-8 M_sun yr^-1, while ~10^-10 M_sun yr^-1 is sufficient for accretion to a white dwarf companion. These accretion rates are feasible for some detached binary configurations on the basis of the Bond-Hoyle type accretion process. We concluded that the carbon star BM Gem is in a detached binary system with a companion of low mass and low luminosity. However, we are unable to determine whether this companion object is a dwarf or a white dwarf. The upper limits for binary separation are 210 AU and 930 AU for a dwarf and a white dwarf, respectively. We also note that the observed features of BM Gem mimic those of Mira (omi Cet), which may suggest actual similarities in their binary configurations and circumstellar structures.Comment: 11 pages, 2 figures, 1 table, accepted for publication in Ap

The Morphology of the Expanding Ejecta of V2491 Cygni (2008 N.2)

Determining the evolution of the ejecta morphology of novae provides valuable information on the shaping mechanisms in operation at early stages of the nova outburst. Understanding such mechanisms has implications for studies of shaping for example in proto-Planetary Nebulae. Here we perform morpho-kinematical studies of V2491 Cyg using spectral data to determine the likely structure of the ejecta and its relationship to the central system and shaping mechanisms. We use Shape to model different morphologies and retrieve their spectra. These synthetic spectra are compared with observed spectra to determine the most likely morphology giving rise to them, including system inclination and expansion velocity of the nova ejecta. We find the best fit remnant morphology to be that of polar blobs and an equatorial ring with an implied inclination of 80$^{+3}_{-12}$ degrees and an maximum expansion velocity of the polar blobs of 3100$^{+200}_{-100}$ km/s and for the equatorial ring 2700$^{+200}_{-100}$ km/s. This inclination would suggest that we should observe eclipses which will enable us to determine more precisely important parameters of the central binary. We also note that the amplitude of the outburst is more akin to the found in recurrent nova systems.Comment: 9 pages, 7 figures, accepted for publication in MNRA

The Ursinus Weekly, December 13, 1948

Coeds in customary dazzle and dither at Christmas week • Galaxy of events highlights Christmas week at Ursinus • Men students view yuletide festivities with unawareness • Lovely dispositions of staff triumph to present faculty with season\u27s token • What gift would you give to the world? • Messiah\u27s largest audience enjoys superb interpretation • Bud Williams\u27 band applauded • January 3 date set for junior jubilee • Bruin soccer star honored by Mules • Pharmacy bows 66-36 in court opener • Strong team looms as coed hoopsters click in practice • Host of veteran grapplers certain of winning season • F&M rallies in last period to trip bear quintet 52-44 • John Logue boosts world federalism at meeting of IRC • Exams to be given for civil service • Scholarship to Yale awarded Dillinger • Club 49 opening slated for Jan. 7 in T-G gymnasium • Communion service to be held Thursday in Bomberger chapel • Authority on international law speaks to class in geopoliticshttps://digitalcommons.ursinus.edu/weekly/1604/thumbnail.jp

Measuring the well-being of health care professionals in the Punjab: A psychometric evaluation of the Warwick-Edinburgh Mental Well-being Scale in a Pakistani population

Background. There is growing awareness of the public health importance of mental well-being both in the general population and in specific groups. The well-being of health professionals is likely to influence the quality of the care they deliver. This study was carried out to examine the well-being of Pakistani healthcare professionals, and to evaluate the psychometric performance of the Warwick-Edinburgh Mental Well-being Scale (WEMWBS) in this population. Methods. A cross-sectional survey was carried out from June, 2013 to December, 2014 among 1,271 Pakistani health care providers (HCPs) working in seven different cities in Punjab province, Pakistan, to examine the acceptability, internal consistency, test-retest reliability and content and construct validity of the English version of the WEMWBSin a Pakistani population sample. All data were analyzed in SPSS v. 21. Results. Our analysis demonstrated unidimensional construct validity, high internal consistency (0.89) and test-retest reliability, good validity and easy readability of WEMWBS in our sample of Pakistani HCPs. The mean WEMWBS score was 48.1 (SD 9.4), which is lower than in the general population in other countries. Male HCPs scored significantly higher on the WEMWBS than their female counterparts (P < 0.05), and older respondents had higher scores. Conclusion. The WEMWBS appears acceptable for use in Pakistani HCPs, and findings fromthis study verify its validity and internal consistency for this population sample. Our respondents had lower well-being scores than those reported in general population surveys in the UK

Sheila, Take a Bow

Professor Sheila Whiteley passed away on 6th of June, 2015. Sheila’s ground-breaking achievements in popular culture and gender studies, alongside her bright personal triumphs are celebrated by numerous obituaries from national and international media. Here, we present the tributes of Sheila’s students, colleagues and friends.Sheila Whiteley nous a quittés le 6 juin 2015. Ses recherches pionnières sur la culture populaire et le genre, en plus de ses grands succès personnels, furent célébrés dans de nombreux médias internationaux. Nous vous présentons ici une série d’hommages de ses étudiants, collègues et amis