Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures

Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo

The Effect of Foliar Application of Urea Ammonium Nitrate On Yield and Protein Content of Wheat

Includes the following correction: In the July-August issue (Vol. 46, No.1), photos and cutlines were switched in the article "The Brood Cow Efficiency Study--A Progress Report." The photos with their correct cutlines appear below.The articles discusses nitrogen deficiency in North Dakota farm land and farmers’ attempts to elevate it to increase crop yields. Field trials were established in 1985 and 1986 to test the effect of foliar application of urea ammonium nitrate on yield and in the protein content of wheat. This did result in yield increases if the levels of nitrate nitrogen in the soil were insufficient for maximum plant yield. Foliar application should not exceed 40 pounds per acre to avoid lasting damage and decreased yield

Crop Nutrient Removals vs. Fertilizer Additions in North Dakota

The article concerns both the attrition of soil nutrients and the replacement thereof. Soils inherently contain only a finite quantity of nutrients. When more nutrients are removed than are being replaced, soil eventually becomes depleted. Data from a study in this paper indicated that in North Dakota, plant nutrients are not being replaced in quantities large enough to replace all of the nutrients being removed by crops

Relationships of Potato Yields and Quality to Soil Test Values and Fertilizer Applications

The use of soil tests to accurately predict nutrient needs is dependent on (1) having a soil test procedure that accurately predicts when a nutrient is lacking, and (2) on the calibration of that soil test. Potatoes were grown at 17 sites in the Red River Valley over a 5-year period to determine the influence of N-P-K fertilizer on yield at various soil test levels

Hydraulic test to develop design criteria for the use of Reno mattresses

The present study was aimed at evaluating the performance of Maccaferri mattress products when used as river and canal bank and bed revetment. A hydraulic testing program was developed and undertaken to provide experimental data pertaining to the performance of reno mattresses. Test data were utilized to develop reliable design criteria for Maccaferri reno mattresses. Major tasks include: 1. To review the existing design methodologies and field application experience pertaining to gabions and mattresses. 2. To determine the roughness of revet mattresses. 3. To evaluate requirements of underlying granular filters or filter cloth layers. 4. To evaluate the stability of mattresses subjected to various flow conditions. 5. To analyze test results and develop design criteria applicable to mattress protection designs

X-ray imaging using LEKIDs

We present the detection of 5.9 keV X-rays in a silicon wafer utilising an array of frequency multiplexed Kinetic Inductance Detectors. The readout electronics consists of a programmable digital electronics with an integrated 12-bit ADC, operating with a maximum frequency of 100 MHz. We implement a lumped element geometry, realising pixels as small as possible in order to achieve better position resolution. The whole system allows the simultaneous readout of 14 pixels with a bandwidth of 300 kHz, but it is easily scalable up to 100 pixels. A higher bandwidth detection, with less pixels, allows the reconstruction of the photon absorption position in the substrate up to hundreds of microns. This technological development could be applied in the next future to large area X-Ray Imaging. A better understanding of high energy photon and particle detection is also crucial for the space implementation of LEKIDs for mm-astronomy, where data loss due to Cosmic particles could be a major issue. © Springer Science+Business Media, LLC 2012

Influence of methazolamide on the human control of breathing: A comparison to acetazolamide

Perioperative Medicine: Efficacy, Safety and Outcom

Effect of acetazolamide and methazolamide on diaphragm and dorsiflexor fatigue: a randomized controlled trial

Perioperative Medicine: Efficacy, Safety and Outcom