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Patients with insomnia commonly complain that they are unable to get to sleep because of unwanted thoughts and worries. One account given of this excess cognitive activity is that it results from the incomplete processing of daytime stressors and hassles. Previous research has demonstrated the benefits of writing about emotional experiences as a method to facilitate emotional processing. This pilot study tested the hypothesis that writing about worries and concerns, with an emphasis on the expression and processing of emotion, will reduce sleep onset latency among an analogue sample of poor sleepers. Forty-two poor sleepers were randomly allocated to 1 of 3 groups for 3 nights; the instructions for the "problems" writing group emphasized the expression and processing of worries and concerns, the instructions for the "hobbies" writing group emphasized distraction from worries and concerns by writing about hobbies and interests, the "no writing" group were not given a writing task. The "problems" writing group reported shorter sleep onset latency compared to the "no writing" group. The results of this pilot study highlight the potential of research exploring the utility of a Pennebaker-style writing intervention for improving sleep.
Optical spectra having moderately high resolution (~ 2 — 5 Å) are being used to study the profiles of narrow emission lines in active galactic nuclei (AGNs). It is often found that forbidden lines associated with high critical densities for collisional deexcitation are the broadest. A good example is [O III] λ4363 [ n e (crit) ≈ 3 × 10 7 cm −3 ], whose width can be more than twice that of [O III] λ5007 [ n e (crit) ≈ 8 × 10 5 cm −3 ]. The tight correlation between line width and n e (crit) implies that a much larger range of densities (∼ 10 2 — 10 7 cm −3 ) must be present among clouds in the narrow-line region than was previously believed. At times there almost appears to be a continuity between the narrow- and broad-line regions. In some objects the dense, high-velocity clouds are optically thick to ionizing radiation, since they emit [O I] λ6300 as well as species of much higher ionization (such as [Ne V] λ3426). These results help eliminate several difficulties in photoionization models of LINERs. It may also be possible to use the observed line widths as probes of the gravitational potential in AGNs.
A method of selective detection of a concentration of a metal ion species in a subject is provided in which a biofluid sample is obtained from the subject. The biofluid sample is exposed to a functionalized porous aromatic polymer. The polymer selectively captures and concentrates the metal ion species from the biofluid. Subsequently, the biofluid is washed from the polymer. The polymer is then exposed to a solution comprising a colorimetric indicator that extracts the metal ion species from the washed polymer thereby changing a color of the solution as a function of an amount of the metal ion species in the polymer. The concentration of the metal ion species in the subject is then spectroscopically determined from the color of the solution.
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Journal Article FINITE DEFORMATIONS OF WRINKLED MEMBRANES Get access D. J. STEIGMANN, D. J. STEIGMANN Division of Applied Mathematics, Brown UniversityProvidence, Rhode Island 02912, USA Search for other works by this author on: Oxford Academic Google Scholar A. C. PIPKIN A. C. PIPKIN Division of Applied Mathematics, Brown UniversityProvidence, Rhode Island 02912, USA Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Mechanics and Applied Mathematics, Volume 42, Issue 3, August 1989, Pages 427–440, https://doi.org/10.1093/qjmam/42.3.427 Published: 01 August 1989 Article history Received: 19 July 1988 Published: 01 August 1989
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThiophene hydrodesulfurization over rhenium surfaces: the effects of structure and adsorbates (carbon and sulfur)Mark E. Bussell and Gabor A. SomorjaiCite this: J. Phys. Chem. 1989, 93, 5, 2009–2016Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 March 1989https://pubs.acs.org/doi/10.1021/j100342a060https://doi.org/10.1021/j100342a060research-articleACS PublicationsRequest reuse permissionsArticle Views120Altmetric-Citations9LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
[reaction: see text] The yields, enantioselectivities, and regioselectivities of the reactions of amines and phenoxides with allylic carbonates in the presence of a metallacyclic iridium catalyst were compared. These data show that both preactivation of the catalyst and the size of the ligand affect the yield, enantioselectivity, and regioselectivity. With the activated catalyst containing a bis-naphthethylamino group, the allylic amination and etherification of a broad range of allylic carbonates occurred in high yields and with high regioselectivities and enantioselectivities.
High spectral resolution observations of the massive young star cluster in the filaments of NGC 1275 reveal that the associated Hα emission line ]as a velocity width comparable to, or somewhat less than, that of Hα in typical giant H II regions of similar emission-line luminosity. If this linewidth reflects virial motions of matter within the star-forming region, as has been suggested for other giant H II regions, the mass fraction represented by massive, ionizing stars is not unusually small in this object, and may actually be somewhat larger than average. This behavior is contrary to scenarios of preferential low-mass star formation that have been invoked to reconcile x-ray and optical indications of mass accretion in this object and other cooling-flow galaxies. The observations also confirm that the cluster emission connects smoothly in projected location and velocity with emission from a low-ionization nebular filament. If this region is typical of star formation in cooling flows, it provides strong evidence that the mass accretion rate is less than that predicted from estimates based on x-ray cooling.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTGeneral, Efficient Route to Thiophene-1-Oxides and Well-Defined, Mixed Thiophene-Thiophene-1-Oxide OligomersBiwang Jiang and T. Don TilleyView Author Information Department of Chemistry, University of California at Berkeley, Berkeley, California 94720-1460 Cite this: J. Am. Chem. Soc. 1999, 121, 41, 9744–9745Publication Date (Web):September 30, 1999Publication History Received8 July 1999Published online30 September 1999Published inissue 1 October 1999https://pubs.acs.org/doi/10.1021/ja992365thttps://doi.org/10.1021/ja992365trapid-communicationACS PublicationsCopyright © 1999 American Chemical SocietyRequest reuse permissionsArticle Views1671Altmetric-Citations72LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Anions,Oligomers,Oxidation,Sandwich compounds,Thiophenes Get e-Alerts
