The evolution of gestational diabetes is most often marked by preventable maternal-foetal complications. The objective of this study was to identify factors inuencing the development of pregnancy in women with gestational diabetes. This was a retrospective and analytical study including women with gestational diabetes and treated in gynaecological services in Dakar and its suburbs between 2018 and 2019. A total of 24 women with gestational diabetes were recruited. The mean age of the patients was 29.9 ± 6.45 years (18-45) with a predominance of women over 30 years old. Dyslipidaemias were frequent (91.2%) with a predominance of hypercholesterolemia (n = 13, 54.2%) followed by hyperLDLemia (n = 10, 41.7%). The atherogenic risk was high with the TG / HDL (12.5%) and Apo B / A (20.83%) ratios. A positive correlation was noted between homocysteine and total cholesterol (r = 0.457, p = 0.025), LDL (r = 0.449, p = 0.028), triglycerides (r = 0.540, p = 0.006), apolipoproteins A (r = 0.463, p = 0.023) and B (r = 0.480, p = 0.018), urea (r = 0.0671, p <0.0001) and creatinine (r = 0.0673, p <0, 0001). The development of the pregnancy was marked by caesarean deliveries (54.2%) and macrosomia (8.3%). The factors which were identied in relation to the caesarean section were delayed diagnosis of GD, history of personal abortion (RR (CI) = 2.04 (0.4 - 10.6)), multiparity (RR (CI)) = 2.3 (0.4 - 12.7)) and the advanced age of the woman (RR (CI) = 2.1 (0.5 - 14.4)). The biological monitoring of women with gestational diabetes must consider the dosage of lipid parameters extended to apolipoproteins and homocysteine for a favourable outcome of the pregnancy

This paper is devoted to the design and simulation of an automatic data acquisition system of solar module characteristics. The system is essentially composed of three parts. The first part is devoted to the acquisition of the electrical parameters of the solar module (Current, Voltage and Power) in automatic ways using an automatic variable load. The second part is focused on devices which measure the ambient temperature and solar irradiation. In the last part, we study the design of an acquisition interface and a database for data saving. The results of simulations validate the correct operation of the measuring bench.

The transfer matrix method is used to calculate the reflectance of a crystalline silicon on glass solar cell with a silicon nitride layer (SiNx) as antireflection coating (ARC). It is found that a SiNx double-layer ARC has little advantage over the single layer one. Among all SiNx double layer structures, the refractive index (and thickness) combination of 2.1 (35 nm) and 2.3 (40 nm) for the top and the bottom layer, respectively, is found to provide the highest short circuit current density (Jsc). The influence of the angle of incidence on the reflectance is also studied. The numerical optimization procedure and its results are presented.

The aim of this study is the optimization of the antireflection effect of SiN x in silicon on glass based structure. A numerical calculation is performed and a SiNx double stack antireflection coating is found to have significant advantages over single-layer due to their broad-range coverage of the solar spectrum. Moreover, it was found that minimum reflection losses is obtained for SiN x /SiN x double-layer ARC with refractive indexes of 1.9 et 2.3 for the top and the bottom layer, respectively. The effect of the incident angle on reflectance is also studied. The numerical optimization procedure and its results are presented.

Seven sportsmen, 100 meters and 400 meters runners are submitted to an effort test of 30 seconds. The subjects are on average 23.7 +/-2 years old. The purpose of our work is to study on the one hand the evlution of the anaerobic power. the heart rate and the lactic acid in blood during and after a bicycle test. and their relation, and on the other hand. to know the suitable pratical importance of the heart rate and the lactic acid in blood in connection with the intermittent efforts recovery aiming the anaerobic power developpement. These physiological parameters have been measured by a Monark bicycle 864, a sport-tester PE 3000 and a spectrophotometer JASCO 7800 UV/VIS. The power and the heart rate increase quickly in the 5 first seconds. Our subjects reach their average maximal anaerobic power at the 10th second, and then this power decreases progressively, while the heart rate continues to increase, without being maximal at the end of te test. Five minutes later it decreases in a half, while the lactic acid level calculated at the 30th second is continuing significantly. We have not found a significant relation between the measured parameters at the test stopping and during the recovery period (except between the lactic acid and the recovery index of the heart rate at the 25th minute). The lactic acid in blood would inform better about a good recovery during an interval training effort.