The chemical interaction between high‐concentration, mixed‐ion‐implanted group‐III and ‐V impurities in silicon

1992 ◽  
Vol 72 (2) ◽  
pp. 410-421 ◽  
Author(s):  
S. Yu. Shiryaev ◽  
A. Nylandsted Larsen ◽  
M. Deicher
Keyword(s):  
Chemical Interaction ◽  
High Concentration ◽  
Group Iii ◽  
Ion Implanted

Digoxin transfer across the isolated placenta is influenced by maternal and fetal albumin concentrations

1996 ◽  
Vol 8 (6) ◽  
pp. 969 ◽  
Author(s):  
J Schmolling ◽  
S Jung ◽  
J Reinsberg ◽  
H Schlebusch
Keyword(s):  
Placental Tissue ◽  
Digoxin Concentration ◽  
High Concentration ◽  
Group Iii ◽  
Group I ◽  
Fetal Serum ◽  
Protein Group ◽  
Group Ii ◽  
High Concentrations ◽  
Human Placentae

The aim of this study was to evaluate the influence of different maternal and fetal albumin concentrations on the transplacental transfer and the placental tissue accumulation of digoxin. Digoxin passage across the isolated lobules of 15 human placentae was calculated from repeated fetal and maternal perfusate samples, and placental tissue digoxin concentrations were measured at the end of the experiments. Metildigoxin (Lanitop) was added to the maternal medium at a concentration of 5.70 +/- 0.73 ng mL-1, and maternal and fetal perfusate albumin (BSA) concentrations were kept equal either at a high concentration of 21 g L-1 (Group I; n = 5) or at a low concentration of 3 g L-1 (Group III; n = 5), or differed with a materno-fetal gradient of 21:3 g L-1 (Group II; n = 5). In the experiments with low maternal albumin concentrations (Group III), digoxin concentrations in the maternal circuit decreased to 3.56 ng mL-1, whereas digoxin concentrations in the fetal circuit reached 2.59 ng mL-1 over a 3-h period. With maternal BSA concentrations of 21 g L-1 (Group I and Group II), the decrease in digoxin concentration in the maternal circuit was lower (P < 0.05), and digoxin tissue concentrations at the end of the experiments were smaller (0.45 +/- 0.07 and 0.42 +/- 0.03 v. 0.82 +/- 0.32 ng mg-1 protein, Group I and Group II v. Group III respectively; P < 0.05). Comparing only those lobules with similar high concentrations of maternal protein, fetal BSA concentrations of 21 g L-1 resulted in a greater increase in digoxin concentrations in the fetal circuit (end-feto to initial-maternal digoxin concentrations of 0.44 +/- 0.08 v. 0.37 +/- 0.04 ng mg-1 protein (Group I v. Group II respectively), although this was not significant. The data suggest that maternal and fetal serum albumin concentrations may have an influence on transplacental digoxin transfer, and this should be considered when treating fetuses with cardiac disease transplacentally with glycosides.

In situ annealing of aluminum ion-implanted with molybdenum

1983 ◽  
Vol 41 ◽  
pp. 260-261
Author(s):  
J. Bentley ◽  
L. D. Stephenson ◽  
R. B. Benson ◽  
P. A. Parrish
Keyword(s):  
Analytical Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Naval Research ◽  
Dislocation Network ◽  
Dislocation Loops ◽  
High Concentration ◽  
Aluminum Ion ◽  
Ion Implanted

As part of an analytical electron microscopy study of aluminum ion-implanted with molybdenum, in situ annealing experiments have been performed to better understand the phase transformation mechanisms in material with a peak molybdenum content of approximately 11 at. % Mo. Ion implantations were performed at the Naval Research Laboratory on electropolished coupons 38 × 28 × 0.5 mm of 99.999% Al with 0.5 mm grain size. A dual energy implant schedule of 1.12 × 1020 ions/m2 at 50 keV. plus 1.24 × 1020 ions/m2 at 110 keV was employed. The TEM specimens were prepared by electrodischarge machining 3-mm diameter disks from the implanted coupons and backthinning by electropolishing. In situ annealing was performed in a Philips EM 400T/FEG with the use of a Philips single-tilt heating holder. Videotape recordings were made from the TEM fluorescent viewing screen in the tilted position.A high concentration of small dislocation loops and possibly a tangled dislocation network were present in the as-implanted material. No precipitates were observed; this is consistent with a supersaturated solid solution.

scholarly journals ACPA IN SALIVA AND THEIR ASSOCIATION WITH PERIODONTITIS AND RHEUMATOID ARTHRITIS

2020 ◽  
Vol 28 (1) ◽  
pp. 20-30
Author(s):  
Theodora Nikolaeva Bolyarova-Konova ◽  
Lubomir Deyanov Stefanov ◽  
Zlatimir Gospodinov Kolarov ◽  
Dobromir Ivanov Tanev ◽  
Petya Stefanova Yankova
Keyword(s):  
Rheumatoid Arthritis ◽  
Healthy Subjects ◽  
Group Iv ◽  
High Concentration ◽  
Group Iii ◽  
Periodontal Inflammation ◽  
Group I ◽  
Whole Saliva ◽  
Unstimulated Whole Saliva ◽  
Citrullinated Peptide

Anti-cyclic citrullinated peptide antibodies (ACPA) are formed by the action of host-generated antigens and are part of the etiology of rheumatoid arthritis (RA). They are a sensitive and highly specific indicator of RA. MATERIALS AND METHODS In the study involved 105 subjects aged 32 to 85 years (Mean age 50,6 ±13,07), divided into four groups: Group I – with periodontitis (P) and without RA, with diagnosed osteoarthritis – 26 patients; Group II – with P and RA – 28 patients; Group III – without P and with RA – 26 patients; Group IV – without P and without RA – 25 individuals. All patients underwent clinical and laboratory tests for the diagnosis of RA and osteoarthritis, a clinical periodontal examination, and unstimulated whole saliva was collected. RESULTS We found significantly higher salivary ACPA levels in RA patients compared to healthy subjects (p <0.0001). In P patients we found significantly higher levels of ACPA in saliva than in healthy subjects (p <0.0001). Among P patients, we found a significant correlation between ACPA concentration in saliva and the following indicators: PISA; PD; BOP, respectively (p<0.001), (p =0.003), (p =0.007). Among RA patients, our results showed a significant correlation of ACPA concentration in saliva with the following indicators: serum ACPA concentration (p <0.0001); serum RF concentration (p <0.0001); DAS-28 (CRP) (p=0.009). CONCLUSION Based on the established correlation between salivary ACPA levels and RA indicators, a high concentration of ACPA in saliva may be suggested as an easily accessible indicator of RA, but further studies are needed to ascertain this possibility. The established association between periodontal parameters and salivary ACPA levels confirms the effect of periodontal inflammation on salivary ACPA concentration and justifies the treatment of P as a way of preventing and controlling RA.

scholarly journals Effect of beluntas (Pluchea indica) leaf extract on mice spermatogenesis

2010 ◽  
Vol 8 (2) ◽  
pp. 47-51
Author(s):  
NUR AMALINA ◽  
SUYATMI SUYATMI ◽  
ENDANG LISTYANINGSIH SUPARYANTI
Keyword(s):  
Body Weight ◽  
Treatment Group ◽  
Leaf Extract ◽  
Study Groups ◽  
Control Group ◽  
High Concentration ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
The Difference

Amalina N, Suyatmi, Suparyanti EL. 2010. Effect of beluntas (Pluchea indica) leaf extract on mice spermatogenesis. Biofarmasi 8: 47-51. This research aimed to determine the effect of beluntas (Pluchea indica L.) leaf extract in habiting spermatogenesis. Flavonoids can inhibit aromatase enzyme that function to catalyze the conversion of androgens into estrogen so that the level of the testosterone hormone will increase. The high concentration of testosterone will affect on the feedback to the pituitary, that not releasing FSH and LH, so it will inhibit spermatogenesis. This research is an experimental research with post-test only controlled group design method, using male mice, 2-3 months age, weight 20-30 g, as many as 24 mice divided into 4 groups. The first group was a control group, the second group as treatment group I that given with 1.4 mg/20 g body weight beluntas extract, the third group as treatment group II that given with 2.8 mg/g body weight beluntas extract. The fourth group as treatment group III that given with 5.6 mg/g body weight beluntas extract. The treatment was given for 10 days after that the testes of mice were taken and from each testicle was made 3 slices and from each slice the most representative seminiferous tubule was taken for spermatid cells. So, each mice had 18 units of data would be analyzed. The data obtained were analyzed with Anova to determine the significant differences before and after the treatment of extract and to be compared the difference between four groups with Dunnet T3 test to determine the difference between each group. Based on the statistical test results with Dunnet T3, it showed a significant difference between the fours study groups, except between treatment groups I and II. This might be due to the effectiveness of the two doses equally so that by doubling the dose, it did not give a doubling effect on decreasing spermatids. The provision of beluntas leaf extract can cause a decrease in the number of spermatid cells in mice. The average spermatid cells number decreased with increasing beluntas leaf extract dose. The best dose for reducing the number of spermatids in this study was the dose in the treatment group III that was 5.6 mg/g body weight.

High concentration effects of ion implanted boron in silicon

1980 ◽  
Vol 22 (1) ◽  
pp. 35-38 ◽  
Author(s):  
H. Ryssel ◽  
K. Müller ◽  
K. Haberger ◽  
R. Henkelmann ◽  
F. Jahnel
Keyword(s):  
High Concentration ◽  
Concentration Effects ◽  
Ion Implanted
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