6,996 research outputs found

    Satellite stratospheric aerosol measurement validation

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    The validity of the stratospheric aerosol measurements made by the satellite sensors SAM II and SAGE was tested by comparing their results with each other and with results obtained by other techniques (lider, dustsonde, filter, and impactor). The latter type of comparison required the development of special techniques that convert the quantity measured by the correlative sensor (e.g. particle backscatter, number, or mass) to that measured by the satellite sensor (extinction) and quantitatively estimate the uncertainty in the conversion process. The results of both types of comparisons show agreement within the measurement and conversion uncertainties. Moreover, the satellite uncertainty is small compared to aerosol natural variability (caused by seasonal changes, volcanoes, sudden warmings, and vortex structure). It was concluded that the satellite measurements are valid

    The value of domiciliary medication reviews: a thematic analysis of patient views

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    Background Medication reviews are recognised as essential to tackling problematic polypharmacy. Domiciliary medication reviews (DMRs) have become more prevalent in recent years. They are proclaimed as being patient-centric but published literature mainly focuses on clinical outcomes. However, it is not known where the value of DMRs lies for patients who participate in them. Objective To determine the value of domiciliary medication reviews to service users. Setting Interviews took place with recipients of domiciliary medication reviews residing in the London boroughs of Islington and Haringey. Method Semi-structured interviews analysed using thematic analysis. Main outcome measure Themes and sub-themes identified from interview transcripts. Results Five themes were identified: advantages over traditional settings, attributes of the professional, adherence, levels of engagement and knowledge. Conclusion For many patients, the domiciliary setting is preferred to traditional healthcare settings. Patients appreciated the time spent with them during a DMR and felt listened to. Informal carers felt reassured that the individual medication needs of their relative had been reviewed by an expert

    SAM-2 ground-truth plan: Correlative measurements for the Stratospheric Aerosol Measurement-2 (SAM 2) sensor on the Nimbus G satellite

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    The SAM-2 will fly aboard the Nimbus-G satellite for launch in the fall of 1978 and measure stratospheric vertical profiles of aerosol extinction in high latitude bands. The plan gives details of the location and times for the simultaneous satellite/correlative measurements for the nominal launch time, the rationale and choice of the correlative sensors, their characteristics and expected accuracies, and the conversion of their data to extinction profiles. The SAM-2 expected instrument performance and data inversion results are presented. Various atmospheric models representative of polar stratospheric aerosols are used in the SAM-2 and correlative sensor analyses

    The Effects of HIIT Versus MICT and Sedentary Controls on Blood Lipid Concentrations in Nondiabetic Overweight and Obese Young Adults: A Meta-analysis.

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    International Journal of Exercise Science 16(3): 791-813, 2023. With rates of obesity and dyslipidemia rising among young adults, this meta-analysis aimed to compare the effects of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) and sedentary controls (CON) on low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), and total cholesterol (TC) in nondiabetic overweight and obese young adults to determine if HIIT or MICT is more efficacious in improving dyslipidemia. Studies included in the analysis had to be randomized controlled trials or quasi-experimental studies, comparing the effects of HIIT versus MICT or CON on at least three variables of interest: LDL, HDL, TG, and TC, in nondiabetic adults, with body mass indexes (BMIs) above 25, and average ages between 18-30. The quality of the studies was evaluated using the Physiotherapy Evidence Database (PEDro) scale. Eight studies fulfilled the selection criteria, with a mean PEDro quality score of 5.8. Compared to CON, HIIT significantly decreased the concentrations of LDL (-12.14 mg/dL, p = \u3c 0.00001) and TC (-9.27 mg/dL, p = 0.003), without significantly affecting HDL or TG. Compared to MICT, HIIT significantly decreased the concentrations of LDL (-6.23 mg/dL, p = 0.05) and TC (-7.85 mg/dL, p = 0.02), without significantly affecting HDL or TG concentrations. HIIT is superior to MICT and CON in improving the concentrations of LDL and TC in our target population. As early management of dyslipidemia improves long-term health, we recommend clinicians consider HIIT training protocols for their nondiabetic overweight and obese young adult patients

    The outcome of domiciliary medication reviews and their impact: a systematic review

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    OBJECTIVES: Medication reviews in the domiciliary setting are becoming more prevalent internationally. Understanding the benefits of these reviews is essential to ensuring quality healthcare services. To date there has not been a systematic evaluation of the outcomes of these services and their impact on patients. A systematic review of the literature was undertaken with a view to understanding the impact of medication reviews in this setting. Controlled and uncontrolled studies were included. Outcomes were categorised according to the ECHO model. A narrative synthesis was developed. KEY FINDINGS: Nineteen out of 31 papers included demonstrated an improvement in outcome. Clinical outcomes were the most commonly measured and humanistic outcomes the least commonly measured. Domiciliary medication reviews (DMRs) services are presented as providing benefit. However, it is difficult to quantify the impact of services from the published outcomes. SUMMARY: Future work should focus on demonstrating the meaningful changes to patients that DMRs have enabled

    Human Apolipoprotein B Transgenic Mice Generated with 207- and 145-Kilobase Pair Bacterial Artificial Chromosomes. Evidence that a distant 5'-element confers appropriate transgene expression in the intestine

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    We reported previously that ~80-kilobase pair (kb) P1 bacteriophage clones spanning either the human or mouse apoB gene (clones p158 and p649, respectively) confer apoB expression in the liver of transgenic mice, but not in the intestine. We hypothesized that the absence of intestinal expression was due to the fact that these clones lacked a distant DNA element controlling intestinal expression. To test this possibility, transgenic mice were generated with 145- and 207-kb bacterial artificial chromosomes (BACs) that contained the human apoB gene and more extensive 5'- and 3'-flanking sequences. RNase protection, in situ hybridization, immunohistochemical, and genetic complementation studies revealed that the BAC transgenic mice manifested appropriate apoB gene expression in both the intestine and the liver, indicating that both BACs contained the distant intestinal element. To determine whether the regulatory element was located 5' or 3' to the apoB gene, transgenic mice were generated by co-microinjecting embryos with p158 and either the 5'- or 3'-sequences from the 145-kb BAC. Analysis of these mice indicated that the apoB gene's intestinal element is located 5' to the structural gene. Cumulatively, the transgenic mouse studies suggest that the intestinal element is located between -33 and -70 kb 5' to the apoB gene

    Silicon materials task of the low cost solar array project. Phase 3: Effect of impurities and processing on silicon solar cells

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    The 13th quarterly report of a study entitled an Investigation of the Effects of Impurities and Processing on Silicon Solar Cells is given. The objective of the program is to define the effects of impurities, various thermochemical processes and any impurity-process interactions on the performance of terrestrial silicon solar cells. The Phase 3 program effort falls in five areas: (1) cell processing studies; (2) completion of the data base and impurity-performance modeling for n-base cells; (3) extension of p-base studies to include contaminants likely to be introduced during silicon production, refining or crystal growth; (4) anisotropy effects; and (5) a preliminary study of the permanence of impurity effects in silicon solar cells. The quarterly activities for this report focus on tasks (1), (3) and (4)

    Natural Cycles, Gases

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    The major gaseous components of the exhaust of stratospheric aircraft are expected to be the products of combustion (CO2 and H2O), odd nitrogen (NO, NO2 HNO3), and products indicating combustion inefficiencies (CO and total unburned hydrocarbons). The species distributions are produced by a balance of photochemical and transport processes. A necessary element in evaluating the impact of aircraft exhaust on the lower stratospheric composition is to place the aircraft emissions in perspective within the natural cycles of stratospheric species. Following are a description of mass transport in the lower stratosphere and a discussion of the natural behavior of the major gaseous components of the stratospheric aircraft exhaust

    Probing the N=14N = 14 subshell closure: gg factor of the 26^{26}Mg(21+^+_1) state

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    The first-excited state gg~factor of 26^{26}Mg has been measured relative to the gg factor of the 24^{24}Mg(21+2^+_1) state using the high-velocity transient-field technique, giving g=+0.86±0.10g=+0.86\pm0.10. This new measurement is in strong disagreement with the currently adopted value, but in agreement with the sdsd-shell model using the USDB interaction. The newly measured gg factor, along with E(21+)E(2^+_1) and B(E2)B(E2) systematics, signal the closure of the νd5/2\nu d_{5/2} subshell at N=14N=14. The possibility that precise gg-factor measurements may indicate the onset of neutron pfpf admixtures in first-excited state even-even magnesium isotopes below 32^{32}Mg is discussed and the importance of precise excited-state gg-factor measurements on sdsd~shell nuclei with N≠ZN\neq Z to test shell-model wavefunctions is noted.Comment: 8 pages, 5 figure
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