Literatura académica sobre el tema "781.1/7"

Enzymatic induced calcite precipitation (EICP) is a novel, innovative, sustainable and environmentally friendly technique for soil improvement. EICP utilizes extracted free urease enzyme to induce calcite precipitation. Being enzymatic reaction, EICP process is susceptible to variation in pH, temperature, concentrations of reactants and urease enzyme content. This research studied the effect of curing temperature, ranging from 30 to 60°C on the shear strength and calcium carbonate content (CCC) of EICP treated residual soils cured at 3, 7, and 14 days. Based on the experimental results obtained, it was found that curing temperature has tremendous effect on the shear strength and CCC, while curing period has insignificant influence on the strength and CCC of EICP treated residual soils. The results have shown that at 3 days curing period, maximum shear strengths of 763.29 and 876.92 kPa were determined at optimum curing temperature of 50oC when the residual soil was treated with 0.50 and 1.00 M, respectively. It was also found that the increased in shear strength and CCC of EICP treated residual soil was insignificant beyond 3 days curing period. The UCS values of 0.50 M treated samples cured under 50°C at 3, 7, and 14 days were 763.29, 781.15, and 790.99 kPa. In summary, curing temperature has tremendous effect on the shear strength and CCC of EICP treated residual soil and maximum efficiency of the EICP process could be attained at 50°C.

The rare earth metal (RE)-magnesium-thallides REMgTl (RE = Y, La-Nd, Sm, Gd-Tm, Lu) were prepared from the elements in sealed tantalum tubes in a water-cooled sample chamber of a high-frequency furnace. The thallides were characterized through their X-ray powder patterns. They crystallize with the hexagonal ZrNiAl type structure, space group P62m, with three formula units per cell. Four structures were refined from X-ray single crystal diffractometer data: α = 750.5(1), c = 459.85(8) pm, wR2 = 0.0491, 364 F2 values, 14 variables for YMgTl; α = 781.3(1), c = 477.84(8) pm, wR2 = 0.0640, BASF = 0.09(2), 425 F2 values, 15 variables for LaMgTl; α = 774.1(1), c = 473.75(7) pm, wR2 = 0.0405, 295 F2 values, 14 variables for CeMgTl; a = 760.3(1), c = 465.93(8) pm, wR2 = 0.0262, 287 F2 values, 14 variables for SmMgTl. The PrMgTl, NdMgTl, GdMgTl, TbMgTl, and DyMgTl structures have been analyzed using the Rietveld technique. The REMgTl structures contain two cystallographically independent thallium sites, both with tri-capped trigonal prismatic coordination: Tl1Mg3RE6 and Tl2Mg6RE3. Together the magnesium and thallium atoms form three-dimensional [MgTl] networks with Mg-Mg distances of 327 and Mg-Tl distances in the range 299 - 303 pm (data for CeMgTl)

Background: This study aimed to isolate Azospirillum species from the soil environment and assess their plant growth-promoting abilities. Soil samples were collected from 10 different agricultural sites. The bacteria were isolated by serially diluting the soil samples and each aliquot was transferred into a Nitrogen-free bromothymol blue medium and then incubated for 7 days at 37°C. The isolates were further screened based on their morphological, biochemical and plant growth phytohormone production. The Fourier Transform Infrared Spectrophotometer will be used to elucidate the functional groups present in the isolates. Furthermore, the isolates were subjected to molecular identification. The results showed that Seventeen (17) bacteria were isolated from the soil samples of different crop plants using nitrogen-free bromothymol blue medium with all forming a white subsurface pellicle and they were further screened to seven (7) isolates, based on their morphological, biochemical, and plant growth phytohormones production characteristics, they include A1, A2, A3, A4, A5, A6 and A7. Three of the isolates (A1, A3, and A6) were randomly selected for molecular identification. The Fourier Transform Infrared Spectrophotometer identified the functional groups that are present in the Azospirillum strains to be aromatic compounds. All isolates showed ammonium production potential with A7 having the highest production of 781.3 µg/ml. Only four (4) isolates showed the ability to solubilize Calcium triphosphate with A7 having the highest solubilization (776 µg/ml). Furthermore, all isolates exhibited the ability to produce Indole acetic acids in the growth medium with A6 having the highest production (798.5 µg/ml). The molecular analysis and the sequence analysis of the three isolates 16SrRNA showed two of the isolates to be Azospirillum brasilense (A1, A3) and the other Azospirillum lipoferum (A6). Therefore, this study shows that this strain of Azospirillum has a high ability to produce Indole Acetic Acids, which aids in the production of phytohormones such as Auxins, Solubilize Calcium triphosphate and hence proffer a sustainable solution to improving plant growth.

Abstract Abstract 4386 Seizures are rare during infusion of autologous peripheral blood stem cells (PBSC). We retrospectively analyzed 159 adult patients (pts.) collected consecutively between January 2006 and July 2009. Pts. were collected on either COBE Spectra (COBE) (n=85) or Fresenius AS 104 (Fresenius) (n=74) cell separators and mobilized with granulocyte colony stimulating factor (G-CSF) alone (n=47), G-CSF and Plerixafor (n=26), or G-CSF and chemotherapy (n=66). Pts. characteristics did not differ between the COBE and Fresenius cohorts, but there were differences in PBSC product (Table). Pts. collected with COBE had higher white blood cell (WBC) and total nucleated count (TNC) but lower mononuclear cell (MNC) percentage and cell viability than pts. collected with the Fresenius. Absolute CD34+ cells in the PBSC product, CD34+ cells / kg and total CD34+ cells / kg infused at transplant were not significantly different. CD34+ yields (calculated as the ratio of CD34+ cells /μl of the PBSC product to the patient's peripheral blood CD34+ cells / μl taken on the day of collection) were significantly higher on the COBE than Fresenius. No serious adverse events occurred during PBSC infusion except 3 of 159 pts. developed seizures during infusion of PBSC; all collected on the COBE and all three had product WBC > 590 × 103/μl (compared to a median of 163.3 × 103/ μl for all other products)(Figure). Evaluation of pts. did not identify abnormalities in imaging studies, cerebrospinal fluid analysis, electrolytes, or past history which might explain etiology of seizures. No significant difference in WBC or platelet engraftment was observed in pts. collected with COBE or Fresenius. We then prospectively correlated WBC counts midway and at the end of PBSC collections. Fourteen pts. had 15 apheresis using the Fresenius. Mid- and post-WBC concentrations were 64 +/− 23 × 103/μl and 69 +/− 20 × 103/μl, respectively. Fifty-one pts. had 66 apheresis using COBE, with WBC counts obtained midway and at the end of collection of 287 +/− 150 × 103/μl and 273 +/− 144 × 103/μl, respectively. Mid-WBC accurately correlated with WBC at the end of the collection in both the COBE and Fresenius cohorts (r2 = 0.940 and r2 = 0.904, respectively). Using this information, we prospectively evaluated 65 pts. who underwent 80 PBSC collections in anticipation of an autologous (n=44) or allogeneic (n=7) stem cell transplant between June 2009 and January 2010. Collections for these pts. were performed using the COBE (n=66) or the Fresenius (n=15). Mid-WBC were obtained and products with mid-collection WBC concentration > 450 × 103/uL (n=29) had additional autologous plasma collected at the time of collection for final product dilution to < 450 × 103/uL prior to cryopreservation. Pts weight, volume of PBSC product and CD34+ cells/kg infused did not differ between the pts who received diluted PBSC product and those who did not. There were also no differences in either ANC (12 ± 1.3 days vs. 11.5 ± 1.3 days, dilution vs. non-dilution, p = 0.760) or in platelet engraftment (18 ± 3.7 days vs. 16 ± 2.7 days, dilution vs. non-dilution, p = 0.561). No serious adverse infusion effects were observed in either group. In conclusion, high number of WBC in COBE collections is a possible cause of PBSC infusion related seizures. No seizures were observed after dilution of PBSC with high WBC concentration.TIENT AND PRODUCT CHARACTERISTICSCOBE (±SD)Fresenius (±SD)Number of Products165180Number of Patients8574Age at collection56 ± 1456 ± 15Weight at Collection (kg)82.7 ± 17.979.5 ± 15.9Collections / Patient2 ± 12 ± 1Blood Volume Processed at end of Collection (L)18.0 ± 2.418.1 ± 2.7(*)Product Volume (ml)241 ± 56.8402 ± 72.0Peripheral WBC (103/ μl)36.6 ± 18.933.3 ± 24.5(*)Product WBC(103/ μl)163.3 ± 136.055.8 ± 29.3(*)TNC (1010)3.51 ± 1.861.95 ± 1.19(*)MNC (1010)2.36 ± 1.191.60 ± 0.09(*)MNC (%)75.0 ± 23.385.0 ± 10.8Volume prior to freezing(ml)100 ± 54100 ± 32(*)Post Freeze Viability (%)70 ± 1475 ± 10Peripheral CD34+/ μl24.0 ± 43.825.3 ± 79.1(*)Product CD34+/μl726.7 ± 1325.9264.63 ± 781.0(*)Product / Peripheral CD34+24.87 ± 10.9010.91 ± 6.64Absolute Product CD34+ cells (108)1.77 ± 3.521.14 ± 3.35Product CD34+/kg (106)2.02 ± 4.671.39 ± 4.15Total CD34+ cells infused (106 / kg)3.85 ± 3.203.85 ± 2.24(*) = p values < 0.05 Disclosures: No relevant conflicts of interest to declare.

We have previously shown that chronic mild and unpredictable stress (CMS) induced endothelium dysfunction and insulin resistance in rats. Physical exercise is recognized to provide better glycemic control. Thus, the aim of this study was to evaluate the effect of moderate exercise on the response to oral glucose tolerance test (OGTT) of rats submitted to CMS. Male Sprague‐Dawley rats were divided into four groups: 1) Control, 2) Exercise, 3) CMS and 4) Exercise plus CMS (n=7–9). CMS protocol consisted on application of different stressors, 7 days per week (wk) during 3 wk (5, 6 and 7th wk of protocol). The physical exercise was performed after a period of adaption on the treadmill and consisted of an intensity of 50–70% of the maximal exercise test, 5 days per wk, and 1 hour per day (during 8 wk). Data were analyzed by ANOVA bifatorial (p<0.05). All procedures were approved by Institutional Ethics Committee. Exercise, CMS and Exercise plus CMS presented higher corticosterone plasma level in comparison with Control group (p < 0.05). Exercise (781.1 ± 17,2 mmol × min/L) and Control (842.9 ± 15.5 mmol × min/L) group presented lower area under the curve of glucose during OGTT in comparison with Exercise plus CMS (872.0 ± 12,9 mmol × min/L) and CMS (879.5 ± 11.5 mmol × min/L) group, respectively (p<0.05). These data show that aerobic training has not been able to abolish the impairment of glucose tolerance induced by CMS.Support or Funding InformationFAPESP, CAPES, CNPq, FAEPEX‐UNICAMP.

Introduction: Changes in liver biochemical prole are normal during pregnancy. However, severe liver disease, although rare, can occur and must be recognized at an early stage to reduce morbidity and mortality for mother and infant.The pathological derangement in the liver functions may be related to pregnancy or may coexist with pregnancy and may be divided into three major groups. We aim to nd the incidence and possible (pregnancy-specic liver disorder and pregnancy non-specic liver disorder) of alteration in liver function tests (LFTs) in pregnant women attending tertiary care center. Aim and Objectives: To determine the association between altered Liver function tests and Possible causes of liver disorders in Pregnancy. Materials and Methods: Sampling data was collected over a period time of 1 Year. The study was done at the Clinical Biochemistry Department, tertiary care rural center. All data will be collected from the solace-laboratory Information system of the clinical biochemistry register at the central diagnostic laboratory. The sample size of the study is 83. Then, we plot the data according to the incidence of variable causes of liver disorderspecic and non-specic to pregnancy, also calculate the degree of alteration in LFTs in particular causes. Result: This study included a total of 83 individual cases (females only-age 18 to 35 years). 41 (49%) out of 83cases were related to pre-eclampsia, 12 (14%) cases related to HELLP syndrome, 2 (2%) cases related to AFLP, 3 (4%) cases related to ICP, 7 (8%) cases related to viral hepatitis, 3 (4%) cases related to Hyperemesis, 8 (10%) cases related to Eclampsia & 7 (8%) cases related to Miscellaneous. ALP level increase in viral hepatitis (mean 585.4 u/l, SD± 68.5), pre-eclampsia (mean 239.28 U/L, SD ± 38.25) and decrease level in miscellaneous Causes (mean 82.2 u/l, SD± 37.4) & ICP (mean 103.3 u/l ,SD±30.0). The AST level was rise in viral hepatitis (mean 781.8 µ/l, SD ± 46.14), AFLP (mean 708.5 u/l, SD ± 12.0), ICP (mean 100 u/l, SD ± 4.35), preeclampsia (mean 123.3 u/l, SD ± 22.0) and remain normal in miscellaneous cause (mean 21.2 u/l, SD ± 8.22) & hyper emesis (mean 25.66 u/l, SD ± 4.50). Conclusion: Alterations in Liver function test results were due to Liver disease in pregnancy include -a 3-to-4-fold rise in the level of alkaline phosphatase (ALP) in viral hepatitis, Pre-eclampsia & AFLP. An increase in the total bilirubin level was found in viral hepatitis, pre-eclampsia & HELLP syndrome, whereas a downward trend was seen in the levels of serum albumin and total proteins. Serum ALT & AST levels become a rise in Pre-eclampsia, Viral hepatitis, Eclampsia, and also AFLP. It was found that serum AST level was in normal limits in hyperemesis &miscellaneous.