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Depressed patients were interviewed at two different severity levels in the course of their illness about both problematic and neutral topics, and their speech behavior was analyzed in terms of speech activity and silences. Lowered speech activity and increased silences occurred at higher severity levels and also during problematic communication content, suggesting the mediation of cognitive factors as postulated by Beck's cognitive model of depression. 相似文献
3.
Serum immunoreactive trypsin concentration after a Lundh meal. Its value in the diagnosis of pancreatic disease.
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G Lake-Bakaar S McKavanagh M Redshaw T Wood J A Summerfield E Elias 《Journal of clinical pathology》1979,32(10):1003-1008
The changes in serum trypsin concentration have been measured in 47 subjects for up to 2 hours after a Lundh meal. In 18 healthy controls, mean fasting trypsin concentration was 285 +/- 125 ng/ml (mean +/- 2 SD). The maximum increase after the Lundh meal (the trypsin response ratio) was 6.7 +/- 7.5%. Six patients with chronic renal failure had elevated fasting serum trypsin concentrations (range 460-1100 ng/ml) but trypsin response ratios fell within the control range. Of five patients with relapsing pancreatitis, two had raised and three normal or low fasting trypsins. After stimulation two had elevated trypsin response ratios; one of the two had evidence of main duct obstruction. Eleven out of 12 patients with chronic pancreatitis (with or without insufficiency) had low fasting trypsin concentrations (range 0-120 ng/ml) Seven of the 12 also had raised trypsin response ratios. In six patients with cancer of the pancreas, fasting trypsin was low in three, normal in two, and raised in one. Both patients with a normal fasting level had a raised trypsin response ratio. The combination of a single estimation of fasting serum trypsin concentration followed by serial measurements after a Lundh meal provides a useful screening test for chronic pancreatic disease. 相似文献
4.
Role of double-stranded RNA and Npro of classical swine fever virus in the activation of monocyte-derived dendritic cells 总被引:2,自引:0,他引:2
Classical swine fever virus (CSFV) is a noncytopathogenic (ncp) positive-sense RNA virus that replicates in myeloid cells including macrophages and dendritic cells (DC). The virus does not induce type I interferon (IFN-alpha/beta), which in macrophages has been related to the presence of the viral Npro gene. In the present work, the role of viral double-stranded (ds)RNA and Npro in the virus-host cell interaction has been analyzed. Higher levels of detectable dsRNA were produced by a genetically engineered cytopathogenic (cp) CSFV compared with ncp CSFV, and cp CSFV induced IFN-alpha/beta in PK-15 cells. With DC, there was only a small difference in the levels of dsRNA between the cp and ncp viruses, and no IFN-alpha/beta was produced. However, the cp virus induced a higher degree of DC maturation, in terms of CD80/86 and MHC II expression. Npro deletion mutants induced an increase in DC maturation and IFN-alpha/beta production-for both ncp and cp viruses-despite reduced replication efficiency in the DC. Deletion of Npro did not influence dsRNA levels, indicating that the interference was downstream of dsRNA turnover regulation. In conclusion, the capacity of CSFV to replicate in myeloid DC, and prevent IFN-alpha/beta induction and DC maturation, requires both regulated dsRNA levels and the presence of viral Npro. 相似文献
5.
General models are developed for static and dynamic geometric and material passive responses. The models are applied to data
obtained from the main pulmonary arteries of calves and dogs. The structural model predicts distortions by simultaneous stretching
and bending in a concise manner. Parameters are obtained by a fiveelement material model. This latter predicts static and
dynamic, nonlinear, frequency-dependent, viscoelastic responses observed in biomaterials over the entire strain range irrespective
of the nature of loading. Validity and baseline parameter values are investigated for the inactivated state, developed by
poisoning the smooth muscle with potassium cyanide. Complexities, related to nonlinear (strain-dependent) and colloidal (thixotropic)
properties of tissues, are analyzed. These properties enter into functional responses in a complex manner that can modify
substantially concepts of material components and vary appreciably between physiologic circumstances and laboratory evaluations.
We propose that, in general, evaluations of material responses must account for these properties. 相似文献
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Smellie WS Forth J Smart SR Galloway MJ Irving W Bareford D Collinson PO Kerr KG Summerfield G Carey PJ Minhas R 《Journal of clinical pathology》2007,60(5):458-465
This seventh best-practice review examines four series of common primary care questions in laboratory medicine: (1) blood count abnormalities 2; (2) cardiac troponins; (3) high-density lipoprotein cholesterol; and (4) viral diseases 2. The review is presented in a question-answer format, with authorship attributed for each question series. The recommendations are a précis of guidance found using a standardised literature search of national and international guidance notes, consensus statements, health policy documents and evidence-based medicine reviews, supplemented by Medline Embase searches to identify relevant primary research documents. The recommendations are not standards, but form a guide to be set in the clinical context. Most are consensus based rather than evidence based. They will be updated periodically to take account of new information. 相似文献
8.
Jordan Brophy Kyle Summerfield Jiashi Yin Jon Kephart Joshua T. Stecher Jeramie Adams Takashi Yanase Jason Brant Katie Dongmei Li-Oakey John O. Hoberg Bruce A. Parkinson 《Materials》2021,14(1)
Two-dimensional covalent organic frameworks (2D-COFs) have been of increasing interest in the past decade due to their porous structures that ideally can be highly ordered. One of the most common routes to these polymers relies on Schiff-base chemistry, i.e., the condensation reaction between a carbonyl and an amine. In this report, we elaborate on the condensation of 3,6-dibromobenzene-1,2,4,5-tetraamine with hexaketocyclohexane (HKH) and the subsequent carbonylation of the resulting COF, along with the possibility that the condensation reaction on HKH can result in a trans configuration resulting in the formation of a disordered 2D-COF. This strategy enables modification of COFs via bromine substitution reactions to place functional groups within the pores of the materials. Ion-sieving measurements using membranes from this COF, reaction of small molecules with unreacted keto groups along with modeling studies indicate disorder in the COF polymerization process. We also present a Monte Carlo simulation that demonstrates the influence of even small amounts of disorder upon both the 2D and 3D structure of the resulting COF. 相似文献
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10.
The intelligibility of sentences presented in noise improves when the listener can view the talker's face. Our aims were to quantify this benefit, and to relate it to individual differences among subjects in lipreading ability and among sentences in lipreading difficulty. Auditory and audiovisual speech-reception thresholds (SRTs) were measured in 20 listeners with normal hearing. Sixty sentences, selected to range in the difficulty with which they could be lipread (with vision alone) from easy to hard, were presented for identification in white noise. Using the ascending method of limits, the SRT was defined as the lowest signal-to-noise ratio at which all three 'key words' in each sentence could be identified correctly. Measured as the difference in dB between auditory-alone and audiovisual SRTs, 'audiovisual benefit' averaged 11 dB, ranging from 6 to 15 dB among subjects, and from 3 to 22 dB among sentences. As predicted, audiovisual benefit is a measure of lipreading ability. It was highly correlated with visual-alone performance (n = 20, r = 0.86, P less than 0.01). Likewise, those sentences which were easiest to lipread gave a higher measure of benefit from vision in audiovisual conditions than did sentences that were hard to lipread (n = 60, r = 0.92, P less than 0.01). The results establish the basis of an efficient test of speech-reception disability in which measures are freed from the floor and ceiling effects encountered when percentage correct is used as the dependent variable. 相似文献