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1.
E vanSonnenberg GR Wittich KS Chon HB D'Agostino G Casola D Easter RG Morgan EM Walser WH Nealon B Goodacre BE Stabile 《Canadian Metallurgical Quarterly》1997,168(4):979-984
OBJECTIVE: The purpose of our study was to review and report the patient selection, techniques, and results of percutaneous drainage of pancreatic abscesses by retrospective review. MATERIALS AND METHODS: Fifty-nine patients (46 men and 13 women) with a mean age of 44 years old had 80 pancreatic abscesses that were drained percutaneously under radiologic guidance (CT, n = 77; sonography, n = 2; and fluoroscopy, n = 1). Abscesses had a wide spectrum of causes, with alcoholic pancreatitis being most common, trauma second most common, and gallstones third. Ten patients had undergone surgery for pancreatic necrosis or abscess. Patients with pancreatic pseudocysts, necrosis, or acute fluid collections were excluded from this study. RESULTS: Of the 59 patients, 51 (86%) were cured with percutaneous drainage and antibiotic therapy. Of the patients who were not cured with percutaneous drainage, seven required surgery and one underwent repeat percutaneous drainage. In the 59 patients, complications included non-life-threatening bleeding in three patients. Ten of 59 patients (17%) had fistulas that spontaneously formed into the gastrointestinal tract. The duration of catheterization ranged from 4 to 119 days, with a mean duration of 33 days. The rate of mortality at 30 days after completion of percutaneous drainage was 8% (5 of 59). CONCLUSION: Percutaneous drainage was an effective therapy for this defined group of patients with pancreatic abscesses. Factors leading to the relatively high success rate described in this study likely included selection of patients; catheters of adequate size, number, and location; careful follow-up with appropriate catheter manipulations; and an integrated, cooperative approach whereby surgeons were willing to permit drainage to effect its benefits, rather than operating prematurely. 相似文献
2.
Segregation of grits of different sizes was practically eliminated by the insertion of small tangential cylinders (3-inch diameter) extending from top to bottom of the drum while it was being filled. 相似文献
3.
A method is outlined whereby a narrow-band direct-coupled resonator filter may be derived from an elliptic-function low-pass prototype. The construction and performance of a three-resonator waveguide cavity filter designed on this basis is described. 相似文献
4.
The asymmetric crossover junction has been characterised experimentally and compared with the T-junction. This comparison indicates that the T-junction data may be used as a first step to estimate the properties of the crossover. 相似文献
5.
<正>引言"服装的弹力是看不到的,而是人体感受到的,一旦你感受过它,便不想失去。"[1]服装设计师和面料制造商将功能性和设计潜力相结合以创造"舒适弹力"和"弹力布"的概念,这种面料具有"感觉良好"和"柔软的弹力性能"。使用最广泛的弹力纤维是氨纶,面料中氨纶的使用比例从1%至10%以上不等,使消费者穿着舒适。 相似文献
6.
Estrogen content of dairy and swine wastes 总被引:3,自引:0,他引:3
Raman DR Williams EL Layton AC Burns RT Easter JP Daugherty AS Mullen MD Sayler GS 《Environmental science & technology》2004,38(13):3567-3573
Naturally occurring estrogens in animal wastes may cause negative environmental impacts, yet their abundance in animal waste treatment and storage structures is poorly documented. To better quantify estrogen concentrations in animal wastes, multiple waste samples were collected from treatment and storage structures at dairy and swine facilities and analyzed for concentrations of 17beta-estradiol (E2), estrone (E1), and 17alpha-estradiol by gas chromatography-mass spectroscopy and by enzyme linked immunosorbent assay (E2 only). Mass ratios of each estrogen to the macronutrients nitrogen, phosphorus, and potassium were also determined. Because manure application rates are typically macronutrient-based, estrogen to macronutrient ratios are proportional to areal mass application rates of estrogen to fields. Swine farrowing waste (from farrowing sows and piglets) had the highest ratios of E2 to macronutrients. Mean ratios in swine farrowing waste were roughly twice those in swine finishing waste (from growing male and nonpregnant female animals) and more than four times higher than those in dairy waste (from lactating cows in various stages of their reproductive cycles); these differences were statistically significant (alpha = 0.05). Estrone followed a similar trend. In contrast, ratios of 17alpha-estradiol to macronutrients were highest in dairy operations. These results can be used to better predict estrogen loading rates on fields receiving swine and dairy wastes. 相似文献
7.
Nicole Riemer Matthew West Rahul Zaveri Richard Easter 《Journal of aerosol science》2010,41(1):143-158
Understanding the aging process of aerosol particles is important for assessing their chemical reactivity, cloud condensation nuclei activity, radiative properties and health impacts. In this study we investigate the aging of black carbon containing particles in an idealized urban plume using a new approach, the particle-resolved aerosol model PartMC-MOSAIC. We present a method to estimate aging time-scales using an aging criterion based on cloud condensation nuclei activation. The results show a separation into a daytime regime where condensation dominates and a nighttime regime where coagulation dominates. There is also a strong dependence on supersaturation threshold. For the chosen urban plume scenario and supersaturations ranging from 0.1% to 1%, the aging time-scales vary between 11 and 0.068 h during the day, and between 54 and 6.4 h during the night. 相似文献
8.
Thematic measures of n Achievement were obtained from 3 groups of 30 Ss. The 1st learned that the 50% writing the most creative stories would receive $2.00; the 2nd that the top 10% would collect. The 3rd was instructed to write the stories with no mention of reward. It was hyypothesized from Atkinson's theory that the .50 group would project more a Achievement then the others. A significant difference existed between the .50 group and controls, but not between any of the others. The study is interpreted as at least in part supporting the theory. The use of the TAT as a practical measure of n Achievement, however, is questioned. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
9.
Paolo Paganetti Dr. Andreas Weiss Dr. Monique Trapp Ina Hammerl Dorothée Bleckmann Ruth A. Bodner Dr. Shanie Coven‐Easter David E. Housman Prof. Christian N. Parker Dr. 《Chembiochem : a European journal of chemical biology》2009,10(10):1678-1688
Hunting for huntingtin : We describe a screening assay based on the inducible expression of the mutant huntingtin protein in cells and on its highly sensitive homogenous determination. Rapid, reproducible, and robust protein determination was achieved through the use of two donor–acceptor‐labeled antibodies and time‐resolved FRET. The assay was developed and validated for ultra‐throughput screening of low‐molecular‐weight compounds modulating the expression of the mutant protein.
10.
The realisation of a microstrip bandpass filter employing coupled hairpin-line resonators is discussed. The performance of an experimental filter at 11 GHz confirms that the low-radiation property of the hairpin resonator leads to improved behaviour compared with a coupled-resonator filter o conventional form. 相似文献