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Summary: This work presents a study about the hydrophilicity and conductivity of plasma polypyrroles (PPy) in contact with solutions of salt concentration similar to human tissues. PPy is a conjugated biocompatible polymer in which the electronic distribution produces partial relocation in contact with different compounds. PPy and PPy doped with iodine (PPy/I) particles of different sizes are being studied as implants in the central nervous system to restore the lost neuronal communication after severe injuries. Particle size, hydrophilicity and conductivity of these polymers are essential in this task. In this work, plasma PPy and PPy/I were synthesized as thin films using low-pressure, rf, resistive, electrical glow discharges and grounded up to obtain microparticles in the range of neuronal nuclei. The electrical conductivity of particles was studied with the addition of human-like ionic solutions, particularly with sodium and potassium ions which are part in the ionic transference of electric charges in neuronal membranes.
defines the functional status of the lower urinary tract and encompass other tests in preoperative management. Few studies have been published on UD parameters in transplanted patients. Our purpose was to assess a score system to predict obstruction in these patients before RT, to avoid complications METHODS: From 01/2005 to 12/2018 278 male patients >50 yrs underwent RT in the Transplant Center of our Hospital. 60(26%) developed LUTS after RT and underwent UD. Patients' data have been collected and analyzed retrospectively. Follow-up was possible in 50 (83%) patients, with a medium of 4,2AE2,4yrs (minimum:9 months) RESULTS: Patients' median age was 56(47-64)yrs. 36(60%) patients were not in therapy for LUTS, 24(40%) took a1blockers. 42(70%) patients underwent UD after RT: 14(33%) had diuresis >500 mL before RT, 6(14%) were oliguric and 22(53%) anuric. 18(30%) patients underwent UD before RT: 11(61%) had diuresis >500 mL, 6(33%) were oliguric and 1(6%) anuric. Within the group who underwent UD after RT:15(36%) had a IPSS>20;22(52%) IPSS 8-19;5(12%) storage LUTS. Among patients who did UD before RT:3(17%) had a IPSS>20;12(66%) IPSS 8-19;3(17%) storage LUTS. 34(57%) patients underwent transurethral resection of the prostate (TURP) following UD, 30 did UD after RT. Within patients who did UD before RT:1 underwent TURP after RT, 3 underwent TURP before RT. Patients who underwent TURP before RT had a diuresis >500 mL.18 patients who did not undergo TURP received therapy, 3 started intermittent self-catheterization. At TURP, median prostate volume was 40(32-67)mL and median duration of anuria was 94 months. Among patients who underwent TURP, 25(73.5%) had a post-void residual urine volume >1/3 of their bladder capacity (BC) and 28(82%) had a BC >200mL. No repeat TURP was performed. Creatinine levels significantly decreased 3 and 6 months after TURP in transplanted patients, with a significant improve of the peak flow rate. Statistical significance was found only between TURP and bladder capacity>350ml (p[0,033), detrusor pressure>30cmH2O (p[0,041) and duration of anuria 3yrs (p[0,038) CONCLUSIONS: UD could select candidates to RT who will benefit from surgery for prostatic obstruction.It would be advisable to do UD in candidates for RT (with conserved micturition and pts with anuria of less than 3 yrs), to early discriminate those who need TURP
The study of return prediction is fundamental to investors. However, inconclusive evidence exists as to whether returns on the South African (SA) stock market may be explained by movements in SA or international macroeconomic variables. This study investigates integration between macroeconomic variables and the JSE ALSI. Using a monthly dataset from 1995-2016, the study is able to update the determination of integration relationships and reduce the 'noise' prevalent in prior research. Unit root, correlation, integration, causality and a vector error correction model were applied. The study identified that the ALSI was statistically significant in explaining SA inflation. The direction and significance of this relationship is of interest to investors and financial economists. If the ALSI has a predictive relationship with inflation, then market performance could impact the decisions made to raise or drop the Repo rate. In addition to the determination of the integration relationships, this study informs researchers on the efficiency and predictability of the SA market.
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