Diabetic microangiopathy in Type 1 (insulin-dependent) diabetic patients after successful pancreatic and kidney or solitary kidney transplantation

To evaluate the beneficial effect of pancreatic grafting on peripheral microcirculation and long-term clinical outcome, we compared data of 28 Type 1 (insulin-dependent) diabetic patients either given a pancreatic and kidney graft simultaneously or given a solitary kidney graft (n=17). Peripheral microcirculation was estimated by transcutaneous oxygen pressure measurement (including reoxygenation potential after blood flow occlusion) and erythrocyte flow / velocity by a non-contact laser speckle method. All the measured parameters showed significant differences between diabetic and control subjects in the mean follow-up time of 49 (simultaneous pancreas and kidney transplantation) and 43 (solitary kidney transplantation) months. The data from patients after simultaneous pancreas and kidney transplantation revealed an improvement of transcutaneous oxygen pressure measurement (rise from 46±2 mm Hg to 63±3 mmHg), reoxygenation time (fall from 224±12s to 114±6s) and laser speckle measurement (rise from 4.2±1.7 to 5.6±1.8 relative units). The control group with solitary kidney transplantation did not show a positive evaluation. Data from patients after simultaneous pancreas and kidney transplantation revealed an improvement in transcutaneous oxygen pressure measurement, reoxygenation time and laser speckle measurement whereas the control group with solitary kidney transplantation did not show a positive evaluation. Improved microcirculation was more pronounced in patients with better microvascular preconditions. The results confirm that diabetic microangiopathy is positively influenced by pancreatic transplantation

Temperature Fluctuations Have and May Continue to Inhibit Corn Emergence

Corn planting proceeded at an all-time record this spring. We’ve experienced one of the best planting seasons ever in Iowa. According to the most recentUSDA-NASS report (2 May 2010), 84 percent of Iowa’s corn was planted with cropping districts ranging from 69 percent complete in south central Iowa to 92 percent complete in north central Iowa. Overall, corn has been planted within the recommended window which should serve to maximize yield potential relative to planting date

Splitting Corn Seedlings to Assess Plant Viability

A hard freeze last weekend resulted in leaf loss in emerged corn seedlings across central and northern Iowa. Several recent articles in ICM news provide insight on the situation. Photos 1 and 2 here show damage in one field in Story County; corn was at about V2 when the frost occurred

Aktive Strategien zur Schutzzielverletzungerkennung durch eine kontrollierte Machtteilung in der Zugriffskontrollarchitektur

Zugangskontrolle und Intrusion Detection werden oft separat behandelt. Zur Erkennung von Schutzzielverletzungen wird hauptsächlich der Datenverkehr eines Netzwerkes ausgewertet - dies geschieht in einer passiven Weise. Aktive Strategien zum Erkennen von Angriffen sind nur durch neue Zugriffskontrollsysteme und kontrollierte Machtteilung möglich. In dem vorliegenden Beitrag wird eine neue Kategorisierung von Zugriffskontrollsysteme vorgestellt und insbesondere auf die kontrollierte Machtteilung eingegangen. Es wird gezeigt wie neue aktive Strategien zur Schutzzielverletzungserkennung möglich werden. Diese Strategien erlauben auch den Missbrauch berechtigter Benutzer, die ihre Befugnisse missbrauchen, zu erkennen. Ebenso können nun bekannte Ideen aus der SPAM Bekämpfung in die Zugangskontrolle übernommen werden. Ein Prototyp wurde mittels der ASCap Architektur implementiert und zeigt, dass die vorgestellten Techniken einsetzbar sind