In the framework of the interdisciplinary project “Settlement History of the Eastern Sahara” at the Universität zu Köln, a large number of sites were excavated during the 1980s in northern Sudan, where the Laqiya-region with the Wadi Shaw and Wadi Sahal was one of the main research areas. About 150 sites have been surveyed and partly excavated. One of these sites, Wadi Shaw 82/52, yielded sherds of a Maidum bowl, which is dateable to the Egyptian IVth and Vth Dynasty. This site was dated by four radiocarbon dates. The dates are compared with the historical chronology of Egypt for the IVth and Vth Dynasty, and are shown to be in good agreement.

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Objective: To evaluate the safety profile of blood sugar limits in intensive care unit (ICU) patients. Methods: Adult patients with ICU stay >36 h, more than two blood sugar measurements and antibiotic therapy concordant with locally adapted guidelines were included. For analyses, one study cohort was defined in two ways: as a narrow group, euglycaemic patients' blood sugar levels 80-150 mg/dl; as a moderate group, euglycaemic patients' blood sugar levels 80-180 mg/dl. Dysglycaemia was defined as blood sugar levels <80 mg/dl for >5% of measurements, and >150 mg/dl or >180 mg/dl (narrow or moderate groups, respectively) for >10% of measurements. The primary endpoint was ICU mortality (euglycaemia versus dysglycaemia). Results: The study comprised 668 patients. When defined as a narrow group, ICU mortality was 3% (four of 135) euglycaemic versus 10% (54/533) dysglycaemic patients (odds ratio [OR] 3.692, 95% confidence interval [CI] 1.313, 10.382). When defined as a moderate group, ICU mortality was 6% (21/351) euglycaemic versus 12% (37/317) dysglycaemic patients (OR 2.077, 95% CI 1.188, 3.630). Frequency of severe hypoglycaemia (blood sugar <40 mg/dl) was not different between the narrow and moderate euglycaemic ranges. Conclusions: Euglycaemia was associated with lower ICU mortality than dysglycaemia, and incidence of hypoglycaemia was low overall in this study. Based on current published evidence, therapeutic targets should be defined according to individual patient characteristics.

Wadi Hariq is a complex valley system in the Northwest Sudan about 400 km west of the Nile. Stratigraphic investigations provide new data on the environmental and climatic history of the present-day hyperarid centre of the southeastern Sahara. Archaeological work there only started at the end of the 1990s, with a survey and excavations carried out as part of the multidisciplinary research project ACACIA of the University of Cologne. To date, 104 sites are known in the Wadi Hariq. Based on the pottery found at these sites, most can be attributed to the Handessi Horizon, the former Geometric Pottery Horizon, of the eastern Sahara. Geometric patterns, and also mat impressions, are characteristic of the Handessi Horizon (ca 2200 . 1100 BC). The subsistence of these prehistoric inhabitants was based on the herding of cattle and small livestock. Transhumance cycles included areas further north (Laqiya region) and south (Wadi Howar), and perhaps even the Nile Valley has to be considered. Similar decorative patterns have been found in all these areas. Evidence of an even earlier human presence in the Wadi Hariq during the Holocene is provided by several sherds decorated with Dotted Wavy Line and Laqiya-type patterns as well as some fragments of rippled-ware pottery.

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