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1.
Wilcox Sara; Evenson Kelly R.; Aragaki Aaron; Wassertheil-Smoller Sylvia; Mouton Charles P.; Loevinger Barbara Lee 《Canadian Metallurgical Quarterly》2003,22(5):513
This study examined whether widowhood was associated with physical and mental health, health behaviors, and health outcomes using a cross-sectional (N=72,247) and prospective (N=55,724) design in women aged 50-79 years participating in the Women's Health Initiative observational study (85.4% White). At baseline, married women reported better physical and mental health and generally better health behaviors than widowed women. Whereas women who remained married over the 3-year period showed stability in mental health, recent widows experienced marked impairments and longer term widows showed stability or slight improvements. Both groups of widows reported more unintentional weight loss over the 3-year period. Changes in physical health and health behaviors were inconsistent, with generally small effect sizes. Findings underscore the resilience of older women and their capacity to reestablish connections, but point to the need for services that strengthen social support among women who have difficulty during this transition. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
2.
Conclusion Because of the success of this project as measured by the favorable comments of the participants as well as the increased
search activity, the Council on the Humanities awarded an additional $1000 to continue the project in the spring of 1985.
As an added feature of the new proposal, a workshop is planned for chairs of the various humanities departments as well as
other interested humanists. The aim will be to encourage them and their colleagues to increase their involvement in automated
literature searching, as well as to encourage their graduate students to use the service. With continued support, greater
awareness of the service, and more extensive coverage of existing and future databases,3 a steady increase in computer-assisted bibliographic searching among humanists is definitely possible. 相似文献
3.
We evaluate sexual behaviour change among homosexual men enrolled in the cohorts in four AIDS Community Demonstration Projects. Behaviour change is classified following the stages of behaviour change model and described using a Markov model. Predictors of behaviour change are identified and evaluated using logit models for correlated data. Sexual behaviour change within the cohort could be modelled as a first-order Markov process. In addition, predictors suggested by models of health behaviour were correlated with particular patterns of sexual behaviour change. Our evaluation revealed a variety of patterns of sexual behaviour change in the cohorts and suggests multi-faceted interventions for promotion of behaviour change. 相似文献
4.
Sylvia V A Uzochukwu Esther Balogh Owen G Tucknot Mervyn J Lewis Patrick O Ngoddy 《Journal of the science of food and agriculture》1994,64(4):405-411
Palm wine and pasteurised palm sap volatiles were collected, concentrated on a Tenax GC and analysed by gas chromatography and gas chromatography-mass spectrometry. Eighty-two components were identified: 47 esters, 9 alcohols, 5 acids, 6 carbonyls, 2 acetals, 4 terpenes and 9 hydrocarbons. These had all been found previously in conventional wines. Odour evaluation of the separated palm wine components as they eluted suggested that no one compound is responsible for the characteristic palm wine odour. The acetates of higher alcohols and the ethyl esters of straight-chain aliphatic C6-C10 acids seemed to be important and may play a big role in imparting the fruity nuances of characteristic palm wine odour. Their association with alcohols seemed also to be necessary for the expression of typical palm wine odour. The qualitative difference between palm sap aroma and palm wine aroma appeared to be due mainly to the presence of these esters and alcohols in palm wine and their apparent absence from palm sap, as well as to the presence of some low-boiling esters and alcohols in palm sap and their apparent absence from palm wine. 相似文献
5.
Wilfried M. Post Mirjam A. A. Huis in ’t Veld Sylvia A. A. van den Boogaard 《Personal and Ubiquitous Computing》2008,12(3):223-235
Many attempts are underway for developing meeting support tools, but less attention is paid to the evaluation of meetingware.
This article describes the development and testing of an instrument for evaluating meeting tools. First, we specified the
object of evaluation—meetings—by means of a set of input, process, and outcome factors. Then, we designed the process of evaluation,
consisting of, first, the generation of meeting behavior in the form of a controlled series of meetings within the context
of a project and, second, the measurement of the identified meeting factors. To measure these factors, a rating scale, questionnaires,
and information flow analysis were used. Next, the instrument was tested, and the factors for successful meetings were determined
in 13 projects in which four participants had to meet four times. The evaluation instrument proved to be a reliable and useful
aid for the development and improvement of meeting tools. 相似文献
6.
Wanasinghe Arachchige Dumith Madushanka Jayathilaka Kun Qi Yanli Qin Amutha Chinnappan William Serrano‐García Chinnappan Baskar Hongbo Wang Jianxin He Shizhong Cui Sylvia W. Thomas Seeram Ramakrishna 《Advanced materials (Deerfield Beach, Fla.)》2019,31(7)
Together with the evolution of digital health care, the wearable electronics field has evolved rapidly during the past few years and is expected to be expanded even further within the first few years of the next decade. As the next stage of wearables is predicted to move toward integrated wearables, nanomaterials and nanocomposites are in the spotlight of the search for novel concepts for integration. In addition, the conversion of current devices and attachment‐based wearables into integrated technology may involve a significant size reduction while retaining their functional capabilities. Nanomaterial‐based wearable sensors have already marked their presence with a significant distinction while nanomaterial‐based wearable actuators are still at their embryonic stage. This review looks into the contribution of nanomaterials and nanocomposites to wearable technology with a focus on wearable sensors and actuators. 相似文献
7.
Pia Fahlbusch Aleksandra Nikolic Sonja Hartwig Sylvia Jacob Ulrike Kettel Cornelia Kllmer Hadi Al-Hasani Stefan Lehr Dirk Müller-Wieland Birgit Knebel Jrg Kotzka 《International journal of molecular sciences》2022,23(12)
Alterations in mitochondrial function are an important control variable in the progression of metabolic dysfunction-associated fatty liver disease (MAFLD), while also noted by increased de novo lipogenesis (DNL) and hepatic insulin resistance. We hypothesized that the organization and function of a mitochondrial electron transport chain (ETC) in this pathologic condition is a consequence of shifted substrate availability. We addressed this question using a transgenic mouse model with increased hepatic insulin resistance and DNL due to constitutively active human SREBP-1c. The abundance of ETC complex subunits and components of key metabolic pathways are regulated in the liver of these animals. Further omics approaches combined with functional assays in isolated liver mitochondria and primary hepatocytes revealed that the SREBP-1c-forced fatty liver induced a substrate limitation for oxidative phosphorylation, inducing enhanced complex II activity. The observed increased expression of mitochondrial genes may have indicated a counteraction. In conclusion, a shift of available substrates directed toward activated DNL results in increased electron flows, mainly through complex II, to compensate for the increased energy demand of the cell. The reorganization of key compounds in energy metabolism observed in the SREBP-1c animal model might explain the initial increase in mitochondrial function observed in the early stages of human MAFLD. 相似文献
8.
An 800 kV electric power substation can have more than one hundred of porcelain multicone type insulators supporting busbar structures.Two or more sections in series,having middle and end fittings,compose these insulators.Ageing process can cause degradation of the cement used in this type of insulator and this fact can affect its dielectric performance under heavy rain.This paper presents results of an investigation based on power frequency high voltage tests performed on 800 kV porcelain multicone type insulators,removed from service after having operated for more than 20 years,as well a non-used one that had been stored on site for long time.The insulators were tested in different arrangements:each section at a time and the two sections assembled in series,as actually used insulator columns.The tests were carried out under artificial rain ranging from 1 mm/min to 5 mm/min.The results have confirmed a reduction of up to 30% in the insulator power frequency flashover voltage under 5 mm/min rain conditions and gave important information to the utility about radial cracks that were observed in many insulators and about the discharge mechanisms along the insulators under rain. 相似文献
9.
H. Zinner M. Michalik M. Schnell G. Erfurt 《Advanced Synthesis \u0026amp; Catalysis》1976,318(6):902-906
Derivatives of Halogenated Aldehydes. VII. The Synthesis of Di-(1,2,2,2-tetrachloroethyl) phosphorochloridate and Tri-(1,2,2,2-tetrachloroethyl) phosphate Reaction of phosphorus pentachloride with an excess of chloral in carbon tetrachloride yields a mixture of the tetrachloroethoxy-phosphorus-chlorides 1 — 4 . Following elimination of pentachloroethane by heating gives a mixture of phosphorus oxychloride, tetrachloroethyl phosphorodichloridate 6 , di-(tetrachloroethyl)phosphorochloridate 7 and tri-(tetrachloroethyl) phosphate 8 , which are separated by distillation in vacuo. The data of i.r., n.m.r. and mass spectra are concordant with the assigned structures. 相似文献
10.