Journal articles: 'Plasma du borde'

1

Trebichavský, I., H. Kozáková, and IŠplíchal. "Plasma lipopolysaccharide level and enterocyte brush border enzymes in gnotobiotic piglets infected with Salmonella typhimurium." Veterinární Medicína 47, No. 10 - 11 (March 30, 2012): 289–94. http://dx.doi.org/10.17221/5837-vetmed.

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Gnotobiotic piglets were orally infected either with the virulent LT2 strain or the non-pathogenic SF1591 rough mutant of Salmonella enterica serotype Typhimurium. They were sacrificed 6 or 24 h after the infection. All piglets infected for 24 h developed systemic infection with an increase of plasma lipopolysaccharide. Infection with the virulent strain caused a significant decrease (P < 0.001) of gamma-glutamyl transpeptidase (GGT) activity in the enterocyte brush border of both the jejunum and ileum, infection with the rough mutant caused a decrease of GGT activity in the ileum only. The activities of other brush border enzymes (lactase, sucrase, glucoamylase, alkaline phosphatase and dipeptidylpeptidase IV) did not change significantly after infection.

2

Derfoul, H., E. Leboucher-Dalimier, I. Gharbi, and A. Poquerusse. "Radial inhomogeneity diagnostics deduced from space-resolved X-ray emission." Laser and Particle Beams 12, no. 3 (September 1994): 485–93. http://dx.doi.org/10.1017/s026303460000834x.

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Radial inhomogeneity diagnostics in hot and dense laser plasmas are presented. By means of an analysis of the spatially resolved X-ray transverse emission of the plasma and of a theoretical modeling, we can access directly to the radial emission coefficient and to the transverse gradients. The intense aluminum Lyβ line has been chosen for this study, and different structured targets have been used to control the radiative transfer in the transverse direction. These targets (large or narrow emissive strips) give complementary results for the emission in the core (i.e., near the laser-target axis) or in the border of the plasma.

3

La Celle, P., FA Blumenstock, and TM Saba. "Blood-borne fragments of fibronectin after thermal injury." Blood 77, no. 9 (May 1, 1991): 2037–41. http://dx.doi.org/10.1182/blood.v77.9.2037.2037.

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Abstract Fibronectin is an adhesive protein that can promote phagocytosis and endothelial cell adhesion. Plasma fibronectin declines following burn in animals and patients, potentially due to its complexing with circulating collagenous debris as well as its rapid binding to sites of tissue injury. Such depletion of fibronectin initiates an opsonic deficiency of the plasma. In view of the sensitivity of fibronectin to proteolytic enzymes, an additional factor that could contribute to the decrease of plasma opsonic activity after burn is the proteolytic fragmentation of fibronectin in the blood. In the current study, we determined if fibronectin fragments appear in the blood of anesthetized rats after a sublethal full-thickness skin burn of 15% to 16% of body surface. Plasma fibronectin concentration was quantified by enzyme- linked immunosorbent assay and the presence of fibronectin fragments in plasma was determined by immunoblot analysis. All blood was collected in an antiprotease mixture to yield final plasma concentrations of 0.15% EDTA, 3mmol/L phenylmethylsulfonyl fluoride, and 3 mmol/L iodoacetate to prevent degradation of fibronectin after sampling. Plasma fibronectin decreased 60% to 70% within 30 minutes post-burn, and this low level lasted for at least 4 hours. Within 30 minutes post- burn, two prominent fragments of fibronectin with a molecular weight of 110 +/- 2.2 kd and 122 +/- 3.3 Kd, respectively, were also detected in the plasma. Peak concentration of these fragments was detected at 60 minutes post-burn, but their level declined by 4 hours. By 4 hours, both bands appeared to resolve into doublets. To rule out the possibility that the fragments of fibronectin detected in the plasma were actually generated by coagulation enzymes activated at the site of peripheral blood sampling, rapid direct inferior vena cava sampling was performed, which also yield the presence of the fragments. Thus, fibronectin fragments exist in the plasma following thermal injury. Because fragments of fibronectin can compete with the intact fibronectin molecule with respect to its ability to stimulate macrophage phagocytosis, such fragments may contribute to altered systemic phagocytic host defense following thermal injury. Furthermore, because fibronectin peptides can compete with matrix fibronectin and impair adhesion of cultured endothelial cells, such circulating fragments may also influence the integrity of the vascular barrier.

4

La Celle, P., FA Blumenstock, and TM Saba. "Blood-borne fragments of fibronectin after thermal injury." Blood 77, no. 9 (May 1, 1991): 2037–41. http://dx.doi.org/10.1182/blood.v77.9.2037.bloodjournal7792037.

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Fibronectin is an adhesive protein that can promote phagocytosis and endothelial cell adhesion. Plasma fibronectin declines following burn in animals and patients, potentially due to its complexing with circulating collagenous debris as well as its rapid binding to sites of tissue injury. Such depletion of fibronectin initiates an opsonic deficiency of the plasma. In view of the sensitivity of fibronectin to proteolytic enzymes, an additional factor that could contribute to the decrease of plasma opsonic activity after burn is the proteolytic fragmentation of fibronectin in the blood. In the current study, we determined if fibronectin fragments appear in the blood of anesthetized rats after a sublethal full-thickness skin burn of 15% to 16% of body surface. Plasma fibronectin concentration was quantified by enzyme- linked immunosorbent assay and the presence of fibronectin fragments in plasma was determined by immunoblot analysis. All blood was collected in an antiprotease mixture to yield final plasma concentrations of 0.15% EDTA, 3mmol/L phenylmethylsulfonyl fluoride, and 3 mmol/L iodoacetate to prevent degradation of fibronectin after sampling. Plasma fibronectin decreased 60% to 70% within 30 minutes post-burn, and this low level lasted for at least 4 hours. Within 30 minutes post- burn, two prominent fragments of fibronectin with a molecular weight of 110 +/- 2.2 kd and 122 +/- 3.3 Kd, respectively, were also detected in the plasma. Peak concentration of these fragments was detected at 60 minutes post-burn, but their level declined by 4 hours. By 4 hours, both bands appeared to resolve into doublets. To rule out the possibility that the fragments of fibronectin detected in the plasma were actually generated by coagulation enzymes activated at the site of peripheral blood sampling, rapid direct inferior vena cava sampling was performed, which also yield the presence of the fragments. Thus, fibronectin fragments exist in the plasma following thermal injury. Because fragments of fibronectin can compete with the intact fibronectin molecule with respect to its ability to stimulate macrophage phagocytosis, such fragments may contribute to altered systemic phagocytic host defense following thermal injury. Furthermore, because fibronectin peptides can compete with matrix fibronectin and impair adhesion of cultured endothelial cells, such circulating fragments may also influence the integrity of the vascular barrier.

5

Astashov, A. G., A. V. Samokhin, N. V. Alekseev, V. A. Sinayskiy, Yu P. Kalashnikov, and Yu V. Tsvetkov. "Synthesis of Al-B system nanostructures by interaction of disperse aluminium with boron and diborane in arc discharge plasma." Physics and Chemistry of Materials Treatment, no. 3 (2020): 11–18. http://dx.doi.org/10.30791/0015-3214-2020-3-11-18.

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Experimental studies of aluminium boride synthesis as a result of interaction of disperse aluminum with diborane B2H6 and disperse boron in a flow of thermal plasma of different composition generated in electric arc plasma torch have been carried out. Experimental work on the synthesis of aluminium boride nanoparticles from elements (a mixture of disperse aluminum and boron) has shown the possibility of obtaining in thermal plasma arc discharge of such phases of the boride as AlB12 and AlB31. The specific surface of the powders obtained is from 3 to 27 m2/g. According to X-ray phase analysis, the powders obtained, except for aluminum boride phases, also contain boron, aluminum, aluminum nitride and boric acid phases. The greatest yield of aluminum boride phases is provided by using the nitrogen plasma with hydrogen and enthalpy 4.5 kWt∙h/m3 in the reactor with increased high-temperature zone. The use of gaseous diborane made it possible to eliminate restrictions on the evaporation of boron particles but did not provide an opportunity to obtain aluminum borides in the plasma-chemical process. It was concluded that it is necessary to perform quenching of high-temperature gas flow containing boron and aluminum vapor to form aluminum borides from the gas phase in plasma-chemical synthesis. Such an approach should ensure that the temperature is reduced to the values at which aluminum borides are stable and that the formation of aluminum boride nanoparticles will occur as a result of condensation from the gas phase under these conditions.

6

Fujimura, Yu, Ken Natsuga, Riichiro Abe, Yusuke Morita, Toshifumi Nomura, and Hiroshi Shimizu. "Plasma cell cheilitis extending beyond vermillion border." Journal of Dermatology 42, no. 9 (June 16, 2015): 935–36. http://dx.doi.org/10.1111/1346-8138.12985.

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7

Misra, N. N., B. K. Tiwari, K. S. M. S. Raghavarao, and P. J. Cullen. "Nonthermal Plasma Inactivation of Food-Borne Pathogens." Food Engineering Reviews 3, no. 3-4 (October 5, 2011): 159–70. http://dx.doi.org/10.1007/s12393-011-9041-9.

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8

Song, Lihao, Bowen Bai, Xiaoping Li, Gezhao Niu, Yanming Liu, Liang Zhao, and Hui Zhou. "Analysis of Hypersonic Platform-Borne SAR Imaging: A Physical Perspective." Remote Sensing 13, no. 23 (December 5, 2021): 4943. http://dx.doi.org/10.3390/rs13234943.

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The usage of a hypersonic platform for remote sensing application has promising prospects, especially for hypersonic platform-borne synthetic aperture radar (SAR) imaging. However, the high-speed of hypersonic platform will lead to extreme friction between the platform and air, which will cause the ionization of air. The ionized gas forms the plasma sheath wrapped around the hypersonic platform. The plasma sheath will severely affect the propagation of SAR signal and further affect the SAR imaging. Therefore, hypersonic platform-borne SAR imaging should be studied from a physical perspective. In this paper, hypersonic platform-borne SAR imaging under plasma sheath is analyzed. The SAR signal propagation in plasma sheath is computed using scatter matrix method. The proposed SAR signal model is verified by using a ground experiment system. Moreover, the effect of attenuation caused by plasma sheath on SAR imaging is studied under different SAR parameters and plasma sheath. The result shows that attenuation caused by plasma sheath will degrade the SAR imaging quality and even cause the point and area targets to be submerged into the noise. The real SAR images under plasma sheath also illustrate this phenomenon. Furthermore, by studying imaging results under different SAR and plasma parameters, it can be concluded that the severe degradation of SAR imaging quality appears at condition of high plasma sheath electron density and low SAR carrier frequency. The work in this paper will be beneficial for the study of hypersonic platform-borne SAR imaging and design of hypersonic SAR imaging systems in the future.

9

Orlov, N. Yu. "Temperature diagnostics for Z-pinches plasma in dependence on compression degree." Laser and Particle Beams 37, no. 4 (November 5, 2019): 364–69. http://dx.doi.org/10.1017/s0263034619000570.

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AbstractCalculations of the spectral coefficients for X-ray absorption and spectral brightness's for X-ray radiation were performed for niobium Z-pinch plasma at the temperature of 1 keV and at different plasma densities to determine the compression degree where the spectral lines become indistinguishable. As known, traditional methods of temperature diagnostics of hot dense radiating plasmas are based on analysis of the spectral line shape in dependence on plasma temperature and density. In this case, the interval of photon radiation energies is used, where the spectral lines are well distinguishable in an experiment. On the other hand, Z-pinch plasma has high compression, and an increase of plasma density leads to the deformation of the spectral line shape because of Doppler broadening, Stark broadening, and so-called “additional” broadening of spectral lines that take place in a quantum statistical ensemble of plasma ions and atoms. The traditional method of temperature diagnostics becomes impossible and different methods, which do not use spectral line characteristics, should be applied. The aim of this paper is to determine the density border where the spectral lines become indistinguishable. Important features of the quantum mechanical model, which is known as ion model of plasma, and which is used for calculations in the presented paper, are considered and discussed. A brief review of the theoretical models that have been earlier developed to calculate the radiative opacity characteristics of hot dense plasma is presented as well.

10

Tian, Yuan Yu, Ying Yun Qiao, and Ke Chang Xie. "Study on Coking Mechanism during the Pyrolysis of Coal to Acetylene in the Plasma." Advanced Materials Research 634-638 (January 2013): 1630–36. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.1630.

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Based on characterization of various properties of coking formation during the processing of pyrolysis of coal to acetylene in the plasma, and the chemical group composition of the coal, the reaction central - border zone characteristics of plasma and the specific circumstances of the reactor, the mechanism of coking on reactor wall is put forword during pyrolysis of the coal to acetylene in the plasma, which aromatics, colloids, asphaltenes and carbenes happen condensation reaction by dehydrogenation in plasma border reaction zone. Besides, a method is proposed that double peak particle size distribution of coal particle can eliminate coking continuously, and it get experimental validation.

11

La Celle, P., FA Blumenstock, C. McKinley, TM Saba, PA Vincent, and V. Gray. "Blood-borne collagenous debris complexes with plasma fibronectin after thermal injury." Blood 75, no. 2 (January 15, 1990): 470–78. http://dx.doi.org/10.1182/blood.v75.2.470.470.

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Abstract Plasma fibronectin augments the clearance of blood-borne foreign and effete complexes by mononuclear phagocytes. The release of a “gelatin- like” ligand into plasma after thermal injury has been reported. We quantified the release of this collagenous debris from thermally injured skin, and its potential interaction with soluble fibronectin in plasma using anesthetized rats. Collagen-like material debris in the plasma was detected by assay of hydroxyproline. Fibronectin was measured by a double antibody enzyme-linked immunosorbent assay (ELISA) technique. Over a 24-hour postburn interval, plasma hydroxyproline increased from 6.7 +/- 0.6 micrograms/mL to a maximum of 19.0 +/- 3.3 micrograms/mL at 60 minutes postburn, and normalized by 6 hours. A direct correlation existed between the magnitude of burn injury and the increase in plasma hydroxyproline. In parallel, plasma fibronectin declined over a 15-minute to 2-hour period postburn, and normalized by 3 to 4 hours with rebound hyperfibronectinemia observed at 24 hours. The elevation in total plasma hydroxyproline was not due to an increase in plasma Clq (zero time, 26.2 +/- 1.4 micrograms/mL; 60 minutes, 23.9 +/- 1.1 micrograms/mL). Tracer studies with 125I-fibronectin showed that the acute decline of plasma fibronectin was due to its uptake by the liver and binding to sites of tissue injury. Total hydroxyproline in extracts of burn skin, used as an index of soluble collagenous material, rose from 15 +/- 3.3 micrograms/g skin at zero time to 129.3 +/- 43.7 micrograms/g skin by 5 minutes postburn, with a decline to 38 +/- 22 micrograms/g skin by 24 hours. The formation of circulating fibronectin-gelatin complexes in vivo was documented by cross- immunoelectrophoresis coupled with autoradiography using 125I-gelatin as a model ligand. Thus, collagenous tissue debris from burned skin may enter the plasma after thermal injury and directly complexes with soluble fibronectin before hepatic phagocytic clearance.

12

La Celle, P., FA Blumenstock, C. McKinley, TM Saba, PA Vincent, and V. Gray. "Blood-borne collagenous debris complexes with plasma fibronectin after thermal injury." Blood 75, no. 2 (January 15, 1990): 470–78. http://dx.doi.org/10.1182/blood.v75.2.470.bloodjournal752470.

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Plasma fibronectin augments the clearance of blood-borne foreign and effete complexes by mononuclear phagocytes. The release of a “gelatin- like” ligand into plasma after thermal injury has been reported. We quantified the release of this collagenous debris from thermally injured skin, and its potential interaction with soluble fibronectin in plasma using anesthetized rats. Collagen-like material debris in the plasma was detected by assay of hydroxyproline. Fibronectin was measured by a double antibody enzyme-linked immunosorbent assay (ELISA) technique. Over a 24-hour postburn interval, plasma hydroxyproline increased from 6.7 +/- 0.6 micrograms/mL to a maximum of 19.0 +/- 3.3 micrograms/mL at 60 minutes postburn, and normalized by 6 hours. A direct correlation existed between the magnitude of burn injury and the increase in plasma hydroxyproline. In parallel, plasma fibronectin declined over a 15-minute to 2-hour period postburn, and normalized by 3 to 4 hours with rebound hyperfibronectinemia observed at 24 hours. The elevation in total plasma hydroxyproline was not due to an increase in plasma Clq (zero time, 26.2 +/- 1.4 micrograms/mL; 60 minutes, 23.9 +/- 1.1 micrograms/mL). Tracer studies with 125I-fibronectin showed that the acute decline of plasma fibronectin was due to its uptake by the liver and binding to sites of tissue injury. Total hydroxyproline in extracts of burn skin, used as an index of soluble collagenous material, rose from 15 +/- 3.3 micrograms/g skin at zero time to 129.3 +/- 43.7 micrograms/g skin by 5 minutes postburn, with a decline to 38 +/- 22 micrograms/g skin by 24 hours. The formation of circulating fibronectin-gelatin complexes in vivo was documented by cross- immunoelectrophoresis coupled with autoradiography using 125I-gelatin as a model ligand. Thus, collagenous tissue debris from burned skin may enter the plasma after thermal injury and directly complexes with soluble fibronectin before hepatic phagocytic clearance.

13

Villanueva, Jesus, Erh-Hsin Ling, Carol J. Chandler, and Charles H. Halsted. "Membrane and tissue distribution of folate binding protein in pig." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 275, no. 5 (November 1, 1998): R1503—R1510. http://dx.doi.org/10.1152/ajpregu.1998.275.5.r1503.

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Folate binding protein may participate in folate homeostasis by regulating monoglutamyl folate transport across relevant cell membranes. We compared the activity, immunoreactivity, and transcripts of folate binding protein in pig liver, kidney, and jejunal mucosa and their relevant cell membranes. Binding of [3H]folic acid was sixfold greater to pig liver plasma membranes than to kidney brush-border membranes, whereas there was no binding to jejunal brush-border membranes. The IgG fraction of rabbit antibody detected pig recombinant folate binding protein at 30 kDa and stained pig liver plasma membranes and kidney brush-border membranes but did not react with jejunal brush-border membranes. Folate binding protein transcripts were present in threefold greater abundance in pig liver than in kidney. Species comparisons showed folate binding protein transcripts in rat and human kidney but not in liver. Thus folate binding protein participates in folate homeostasis by regulating uptake by renal tubular membranes and uniquely by pig liver plasma membranes, but it is not involved in jejunal folate absorption.

14

Nozdrin, I. V., V. V. Rudneva, and G. V. Galevskii. "Plasma synthesis and physicochemical certification of chromium boride." Steel in Translation 43, no. 12 (December 2013): 777–82. http://dx.doi.org/10.3103/s0967091213120115.

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15

Nozdrin, I. V., M. A. Terentieva, and V. V. Rudneva. "THERMODYNAMIC ANALYSES OF PLASMA SYNTHESIS OF CHROMIUM BORIDE." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 55, no. 10 (January 1, 2012): 7–11. http://dx.doi.org/10.17073/0368-0797-2012-10-7-11.

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16

Umanskyi, O., M. Storozhenko, Maksim Antonov, O. Terentyev, O. Koval, and Dmitri Goljandin. "Effect of Thermal Spraying Method on the Microstructure and Wear Behaviour of FeNiCrBSiC-CrB₂ Coating." Key Engineering Materials 799 (April 2019): 37–42. http://dx.doi.org/10.4028/www.scientific.net/kem.799.37.

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In this study, the influence of plasma and detonation spraying techniques on the microstructure and wear behaviour of FeNiCrBSiC-20wt%CrB2 coating was investigated. The obtained coatings were found to comprise of Fe, Ni-based solid solution matrix reinforced with mixed boride phases (Fe,Cr)2B, (Ni,Fe,Cr)B, (Cr,Fe,Ni, Mo)B. The main microstructural differences of the plasma and detonation sprayed coatings are the morphology, the size and the distribution of hard boride particles. The tribological behaviour of coatings was examined under dry sliding conditions against Al2O3 ball at 20, 200 and 400 °C. The wear loss of detonation sprayed coatings was slightly lower at high temperatures while plasma sprayed coating had same wear at all temperatures. The investigation of worn surfaces revealed that abrasive and oxidative wear mechanisms are proved to be dominant for FeNiCrBSiC−20wt.%CrB2 plasma sprayed coatings, while brittle delamination and oxidative wear are characteristic for detonation sprayed coating. The sliding wear loss of the unreinforced commercial FeNiCrBSiC plasma sprayed coating was 2-3 times higher than that of reinforced (with chromium boride) coating at high temperatures due to splat delamination.

17

Kuyama, Tomohiro, Keiichiro Urabe, and Koji Eriguchi. "Quantitative evaluation of plasma-damaged SiN/Si structures using bias-dependent admittance analysis." Journal of Applied Physics 131, no. 13 (April 7, 2022): 133302. http://dx.doi.org/10.1063/5.0085042.

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Plasma process-induced damage (PID) to SiN dielectric films was investigated by using an impedance (admittance)-based technique. Multi-layered equivalent circuits were introduced to assign the spatial and energy distribution of defects created in the SiN/Si system. We propose to use admittance as the principal parameter for damaged SiN/Si systems after Ar and He plasma exposures. The change in the border trap density was determined from the admittance in accumulation, whereas the interface state density and energy profile that was created was determined from the admittance in depletion. Plasma source-dependent damage-creation mechanisms are discussed. It was found that the extracted border trap density in the He plasma-damaged sample was larger than that in the Ar plasma-damaged sample under the same ion dosage. The proposed characterization scheme is useful for assessing PID to dielectric/Si systems.

18

Zhao, Yang, Zhi-nan Zheng, Yan-na Pi, Xue Liang, and San-qing Jin. "Cardioprotective Effects of Transfusion of Late-Phase Preconditioned Plasma May Be Induced by Activating the Reperfusion Injury Salvage Kinase Pathway but Not the Survivor Activating Factor Enhancement Pathway in Rats." Oxidative Medicine and Cellular Longevity 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8526561.

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A previous study in our laboratory demonstrated that transfusion of plasma collected at the late phase of remote ischemic preconditioning (RIPC) could reduce myocardial infarct size. Here, we tested whether the reperfusion injury salvage kinase (RISK) and survivor activating factor enhancement (SAFE) pathways are involved in transferring protection. In a two-part study, donor rats (n=3) donated plasma 48 hours after RIPC (preconditioned plasma) or control (nonpreconditioned plasma). Normal (part 1) or ischemic (part 2) myocardia were collected from recipients (n=6) 24 hours after receiving normal saline, nonpreconditioned plasma, and preconditioned plasma or after further suffering ischemia reperfusion. Western blot was performed to analyze STAT3, Akt, and Erk1/2 phosphorylation in normal and ischemic myocardium (central area and border area). In normal myocardia, preconditioned plasma increased Akt and Erk1/2 phosphorylation significantly compared to nonpreconditioned plasma and normal saline; no STAT3 phosphorylation was detected. In ischemic myocardia, preconditioned plasma increased Akt and Erk1/2 phosphorylation significantly in both central and border areas compared to other fluids; no significant difference in STAT3 phosphorylation occurred among groups. Transfusion of preconditioned plasma collected at the late phase of RIPC could activate the RISK but not SAFE pathway, suggesting that RISK pathway may be involved in transferring protection.

19

Cho, J. H., H. K. Park, K. S. Son, J. H. Yoon, H. S. Kim, and C. G. Kim. "A Study On the Sand Wear Resistance and Formation Behavior of Boride Layer Formed on Ni-Cr-Mo Steel by Plasma Paste Boronizing Treatment." Korean Journal of Materials Research 14, no. 1 (January 1, 2004): 52–58. http://dx.doi.org/10.3740/mrsk.2004.14.1.052.

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20

Ilmiyah, Nur Fadilatul, Salma Zahrotun Nihayah Al Hasani, and Della Renaningtyas. "COMBINATION OF SAW-TOPSIS AND BORDA COUNT METHODS IN SEQUENCING POTENTIAL CONVALESCENT PLASMA DONORS." BAREKENG: Jurnal Ilmu Matematika dan Terapan 17, no. 3 (September 30, 2023): 1521–32. http://dx.doi.org/10.30598/barekengvol17iss3pp1521-1532.

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Convalescent Plasma Therapy (CPT) is an additional therapy to increase the chances of recovery for patients infected with COVID-19. CPT is carried out by giving blood plasma from COVID-19 survivors to COVID-19 patients. Not all survivors of COVID-19 can become plasma donors. Several criteria must be met. Therefore, selecting and sequencing potential plasma donors can be considered an act of decision-making. This research aims to provide an overview of the application of the SAW-TOPSIS combination and the Borda Count method in selecting and ranking potential plasma donor candidates. The criteria for prospective plasma donors are limited to six aspects, namely age, weight, history of blood transfusion, gender, pregnancy status, history of being infected with COVID-19, and history of previous illnesses. Data was taken from ten COVID-19 survivors to illustrate the application of the three methods. The data is taken from a questionnaire distributed via Google Forms. This research was carried out through 3 stages: applying the SAW method, the TOPSIS method, and the Borda Count method. From the calculated results, P06 was the most potential plasma donor candidate, followed by P03, P09, P02, and P04.

21

Haas, D. G., C. L. Siefring, M. M. Baumback, P. Rodriguez, and D. P. McNutt. "Rocket‐borne downconverter system for measuring space plasma turbulence." Review of Scientific Instruments 66, no. 2 (February 1995): 1056–60. http://dx.doi.org/10.1063/1.1146045.

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22

Liu, Z., S. Persson, and C. Sanchez-Rodriguez. "At the border: the plasma membrane-cell wall continuum." Journal of Experimental Botany 66, no. 6 (February 19, 2015): 1553–63. http://dx.doi.org/10.1093/jxb/erv019.

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23

Nozdrin, I. V., V. V. Rudneva, and G. V. Galevsky. "PLASMA SYNTHESIS AND PHYSICAL-CHEMICAL CERTIFICATION OF CHROMIUM BORIDE." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 56, no. 12 (March 28, 2015): 12. http://dx.doi.org/10.17073/0368-0797-2013-12-12-17.

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24

Cheng, Yingying, Sooseok Choi, and Takayuki Watanabe. "Synthesis of Niobium Boride Nanoparticle by RF Thermal Plasma." Journal of Physics: Conference Series 441 (June 13, 2013): 012031. http://dx.doi.org/10.1088/1742-6596/441/1/012031.

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25

Choi, Sooseok, Lorico D. S. Lapitan, Yingying Cheng, and Takayuki Watanabe. "Synthesis of cobalt boride nanoparticles using RF thermal plasma." Advanced Powder Technology 25, no. 1 (January 2014): 365–71. http://dx.doi.org/10.1016/j.apt.2013.06.002.

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26

Volkow, Patricia, Kimberly C. Brouwer, Oralia Loza, Rebeca Ramos, Remedios Lozada, Richard S. Garfein, Carlos Magis-Rodriguez, Michelle Firestone-Cruz, and Steffanie A. Strathdee. "Cross-border paid plasma donation among injection drug users in two Mexico–U.S. border cities." International Journal of Drug Policy 20, no. 5 (September 2009): 409–12. http://dx.doi.org/10.1016/j.drugpo.2008.12.006.

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27

Rao, Lin, Edward G. Gillan, and Richard B. Kaner. "Rapid synthesis of transition-metal borides by solid-state metathesis." Journal of Materials Research 10, no. 2 (February 1995): 353–61. http://dx.doi.org/10.1557/jmr.1995.0353.

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A rapid self-sustaining solid-state precursor route to transition-metal borides, boride solid solutions, and boride composites has been developed. Solid-state metathesis (SSM) reactions between transition-metal chlorides and magnesium boride (MgB2) produce crystalline borides and magnesium chloride. Boride solid solutions are formed using mixed chloride precursors. By using a third precursor, such as NaN3, boride-nitride composites are synthesized. The reaction products are characterized by powder x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and inductively coupled plasma atomic absorption spectroscopy. These boride reactions become self-propagating when the adiabatic temperature is greater than the melting point of the by-product salt, MgCl2 (mp 987 K).

28

Mei, Henrik E., Taketoshi Yoshida, Wondossen Sime, Falk Hiepe, Kathi Thiele, Rudolf A. Manz, Andreas Radbruch, and Thomas Dörner. "Blood-borne human plasma cells in steady state are derived from mucosal immune responses." Blood 113, no. 11 (March 12, 2009): 2461–69. http://dx.doi.org/10.1182/blood-2008-04-153544.

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AbstractProviding humoral immunity, antibody-secreting plasma cells and their immediate precursors, the plasmablasts, are generated in systemic and mucosal immune reactions. Despite their key role in maintaining immunity and immunopathology, little is known about their homeostasis. Here we show that plasmablasts and plasma cells are always detectable in human blood at low frequency in any unimmunized donor. In this steady state, 80% of plasmablasts and plasma cells express immunoglobulin A (IgA). Expression of a functional mucosal chemokine receptor, C-C motif receptor 10 (CCR10) and the adhesion molecule β7 integrin suggests that these cells come from mucosal immune reactions and can return to mucosal tissue. These blood-borne, CCR10+ plasmablasts also are attracted by CXCL12. Approximately 40% of plasma cells in human bone marrow are IgA+, nonmigratory, and express β7 integrin and CCR10, suggesting a substantial contribution of mucosal plasma cells to bone marrow resident, long-lived plasma cells. Six to 8 days after parenteral tetanus/diphtheria vaccination, intracellular IgG+ cells appear in blood, both CD62L+, β7 integrin−, dividing, vaccine-specific, migratory plasmablasts and nondividing, nonmigratory, CD62L− plasma cells of different specificities. Systemic vaccination does not impact on peripheral IgA+ plasmablast numbers, indicating that mucosal and systemic humoral immune responses are regulated independent of each other.

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Hammerman, M. R., and S. Rogers. "Distribution of IGF receptors in the plasma membrane of proximal tubular cells." American Journal of Physiology-Renal Physiology 253, no. 5 (November 1, 1987): F841—F847. http://dx.doi.org/10.1152/ajprenal.1987.253.5.f841.

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To characterize the distribution of receptors for insulin-like growth factors I and II (IGF I and II) in the plasma membrane of the renal proximal tubular cell, we measured binding of 125I-labeled IGF I and 125I-labeled IGF II to proximal tubular basolateral and brush-border membranes and characterized IGF I-stimulated phosphorylation of detergent-solubilized membranes. 125I-IGF I bound primarily to a 135,000 relative molecular weight (Mr) protein and IGF II to a 260,000 Mr protein in isolated membranes. Binding of 125I-IGF I was severalfold greater in basolateral than in brush-border membranes. IGF I-stimulated phosphorylation of the 92,000 Mr beta-subunit of its receptor could be demonstrated only in basolateral membranes. These findings are consistent with an asymmetrical distribution of receptors for IGF I in the plasma membrane of the renal proximal tubular cell, localization being primarily on the basolateral side. In contrast, binding of 125I-IGF II to isolated basolateral and brush-border membranes was equivalent, suggesting that receptors for this peptide are distributed more symmetrically in the plasma membrane. Our findings suggest that the actions of IGF I in proximal tubule are mediated via interaction of circulating peptide with specific receptors in the basolateral membrane. However, our findings establish the potential for actions of IGF II to be exerted in proximal tubule via interaction with both basolateral and/or brush-border membrane receptors.

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Gholamiyan, Hadi, Behnam Gholampoor, and Reza Hosseinpourpia. "Application of Waterborne Acrylic and Solvent-Borne Polyester Coatings on Plasma-Treated Fir (Abies alba M.) Wood." Materials 15, no. 1 (January 4, 2022): 370. http://dx.doi.org/10.3390/ma15010370.

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This research investigates the effect of plasma treatment with air, nitrogen (N2), and carbon dioxide (CO2) gases on the performance of waterborne (acrylic) and solvent-borne (polyester) coated fir (Abies alba M.) wood samples. The properties of the plasma-coated samples were analyzed before and after exposure to accelerated weathering and compared with those of untreated and solely treated ones. According to pull-off testing, the coating adhesion of the wood samples was considerably improved by plasma treatment, and obvious differences were observed between different plasma gases. The effect was more pronounced after the weathering test. Similar results were obtained for the abrasion resistance of the samples. The water contact angle measurement illustrated more hydrophilic character in the solely plasma-treated wood in comparison with the untreated wood. The application of coatings, however, strongly improved its hydrophobic character. The performances of waterborne and solvent-borne coatings on plasma-treated wood were comparable, although slightly better values were obtained by the waterborne system. Our results exhibit the positive effect of plasma treatment on coating performances and the increased weather resistance of the waterborne and solvent-borne coating systems on plasma-treated wood.

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Farajzadeh, Mir Ali, Adeleh Yadeghari, and Maryam Abbaspour. "Dispersive Solid Phase Extraction Using Magnetic NanoparticlesPerformed in a Narrow-Bored Tube for Extraction of Atorvastatin,Losartan, and Valsartan in Plasma." Advanced Pharmaceutical Bulletin 9, no. 1 (February 21, 2019): 138–46. http://dx.doi.org/10.15171/apb.2019.017.

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Purpose: In this investigation, a new version of magnetic solid phase extraction (MSPE) performedin a narrow–bore tube has been proposed. In this study, hydrophobic octyl (C8) functionalizedFe3O4 magnetic nanoparticles (MNPs) stabilized by SiOH groups (Fe3O4@SiO2@C8) are used asmagnetic nano–sorbents for the extraction of cardiovascular drugs from human plasma prior totheir determination by high performance liquid chromatography–photodiode array detection.Methods: After precipitation of the plasma proteins, the supernatant is diluted with deionizedwater and filled into the narrow–bore tube. Then mg–level of the sorbent is added into the tube.The sorbent is dispersed and moved down through the solution instead of passing the solutionfrom the cartridge. Using an external magnet, the collected nano–sorbents at the bottom of thetube are transferred on top of the solution and released to move down through the solution forthree times to increase the extraction efficiency.Results: The linearity of the assay was ranging from 0.4–500 mg mL-1. The limits of detectionand quantification of the method were obtained in the ranges of 0.05–0.07 and 0.16–0.24 mgL-1, respectively. The extraction recoveries were obtained in the range of 31–49%. Intra– andinter–day precisions were calculated and obtained in the ranges of 5–8 and 7%–9% for 0.5 mgL-1 of each analyte, and 5–6 and 6%–8% for 2 mg L-1 of each analyte, respectively.Conclusion: The proposed method was successfully used in determination of the studied drugsin patient’s plasmas.

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Ayodele, Olusoji Oluremi, and Peter Apata Olubambi. "Spark Plasma Sintering of Dinickel Boride Reinforced Titanium Matrix Composites." International Journal of Engineering Research in Africa 62 (November 23, 2022): 19–30. http://dx.doi.org/10.4028/p-yf11lk.

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The synthesis of dinickel boride (2.5 wt.% and 7.5 wt.%) reinforced with titanium matrix was achieved using the spark plasma sintering. The characterization of the sintered samples was investigated with an X-ray diffractometer (XRD), Optical microscope (OM), and Scanning electron microscope (SEM). The OM and SEM images of the sintered samples revealed lamellar structures with particle distributions. The relative densities of the sintered samples increased from 94.3% to 97.3%, while the microhardness values increased from 181 HV1 to 275.2 HV1 due to the addition of Ni2B particles. Furthermore, the tensile properties of the sintered composites decreased with increasing Ni2B contents. The addition of Ni2B particles increased the wear resistance of the fabricated samples. The fractography of the sintered composite showed ductile and brittle failures.

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Galiani, J. A. Sanchez, E. Hadzifejzovic, R. A. Harvey, and D. J. Caruana. "Plasma electrochemistry: Absorption of flame borne species in platinum electrodes." Electrochimica Acta 53, no. 8 (March 2008): 3271–78. http://dx.doi.org/10.1016/j.electacta.2007.11.017.

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Kong, Linggao, Aibing Zhang, Xiangzhi Zheng, Yaya An, Wenjing Wang, Zhen Tian, Yibing Guan, Chao Liu, Jianjing Ding, and Yueqiang Sun. "A Satellite-borne Miniature Ion Mass Spectrometer for Space Plasma." Chinese Journal of Space Science 35, no. 6 (2015): 755. http://dx.doi.org/10.11728/cjss2015.06.755.

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Xia, Dan, Bin Shi Xu, Yao Hui Lv, Yi Jiang, and Cun Long Liu. "Microstructure and Properties of Ni-Base Coatings Obtained by Micro-Plasma Arc Cladding Processes." Advanced Materials Research 154-155 (October 2010): 1371–74. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1371.

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Microstructure and properties of Ni-base coatings obtained by micro-plasma arc cladding was investigated. A uniform clad coating was obtained after optimizing the cladding parameters by using NiCrBSi powder. Microstructure of the coatings observed by optical and scanning electron microscopy (SEM) indicated a homogenized microstructure. It has no evident heat-affected zone and no porosity. The phase of the coating was formed by γ-N solid solution, nickel boride Ni3B, carbide Cr21.34Fe1.66C6 and Cr2B3 type chromium boride. Although it likes the laser cladding coatings, micro-plasma coatings has its own characteristic. In addition, the average microhardness and nanohardness of coatings which were much higher than the substrate were observed, and the distribution of the microhardness was drawn.

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D’Ans, Pierre, and Marc Degrez. "Sliding Wear Behavior of Friction Couples Primarily Selected for Corrosion Resistance: Iron Boride/Iron Boride and Iron Boride/Yttria-Stabilized Zirconia." Metals 8, no. 12 (December 16, 2018): 1071. http://dx.doi.org/10.3390/met8121071.

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Wear mitigation in a sliding couple is challenging if wear has to be minimized on both surfaces. In this paper, ball-on-disk testing is performed on sliding couples where both surfaces (ball and disk) are treated for wear resistance. Studied materials are pack borided H13 tool steel (ASTM A681), pack borided AISI 420 stainless steel (ASTM A276) and plasma sprayed yttria-stabilized zirconia (YSZ). Borided H13 steel exhibits a single phase Fe2B layer, while AISI 420 has a double phase layer, with FeB on the outer surface. Both FeB/Fe2B and FeB/YSZ couples generate three-body abrasion. In the latter case, mass transfer occurs from the ball to the disk as well. Friction coefficient is ~0.6 for the AISI 420/Fe2B and FeB/Fe2B sliding pairs, with less vibration on the latter and wear rates close to 10−3 mm³·(N·m)−1 for both the ball and the disk. In comparison, the FeB/YSZ pair has a friction coefficient of ~0.65, a similar total mass loss, but a much higher wear rate for YSZ than for FeB.

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Gorn, A. A., and K. V. Lotov. "Generation of plasma electron halo by a charged particle beam in a low density plasma." Physics of Plasmas 29, no. 2 (February 2022): 023104. http://dx.doi.org/10.1063/5.0080675.

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Breaking of a plasma wave driven by a long beam of charged particles results in electron jets escaping from the plasma column and forming an electron halo. The halo is accompanied by a strong radial electric field around the plasma, which can distort the trajectories of relativistic charged particles that propagate near the plasma border or are injected into the plasma wave. We study the mechanisms of wave breaking and halo formation when the beam and plasma densities are comparable. If the plasma density is less than or of the order of the beam density, the wavebreaking is well described by a semi-analytical model, which agrees with simulations and allows us to calculate the position of wavebreaking points and determine the regions around the plasma column occupied by the halo.

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Footer, M., and A. Bretscher. "Brush border myosin-I microinjected into cultured cells is targeted to actin-containing surface structures." Journal of Cell Science 107, no. 6 (June 1, 1994): 1623–31. http://dx.doi.org/10.1242/jcs.107.6.1623.

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The isolated intestinal microvillus cytoskeleton (core) consists of four major proteins: actin, villin, fimbrin and brush border myosin-I. These proteins can assemble in vitro into structures resembling native microvillus cores. Of these components, villin and brush border myosin-I show tissue-specific expression, so they may be involved in the morphogenesis of intestinal microvilli. When introduced into cultured cells that normally lack the protein, villin induces a reorganization of the actin filaments to generate large surface microvilli. Here we examine the consequences of microinjecting brush border myosin-I either alone or together with villin into cultured fibroblasts. Injection of brush border myosin-I has no discernible effect on the overall morphology of the cells, but does become localized to either normal or villin-induced microvilli and other surface structures containing an actin cytoskeleton. Since some endogenous myosin-Is have been found associated with cytoplasmic vesicles, these results show that brush border myosin-I has a domain that specifically targets it to the plasma membrane in both intestinal and cultured cell systems. Ultrastructural examination of microvilli on control cultured cells revealed that they contain a far more highly ordered bundle of microfilaments than had been previously appreciated. The actin filaments in microvilli of villin-injected cells appeared to be more tightly cross-linked when examined by thin-section electron microscopy. In intestinal microvilli, the core bundle is separated from the plasma membrane by about 30 nm due to the presence of brush border myosin-I.(ABSTRACT TRUNCATED AT 250 WORDS)

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O'Brien, Graham J., and H. Khris Mahanty. "Colicin 24, a New Plasmid-Borne Colicin from a Uropathogenic Strain of Escherichia coli." Plasmid 31, no. 3 (May 1994): 288–96. http://dx.doi.org/10.1006/plas.1994.1030.

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Lin, Chuen-Fu, Zon-Fa Fung, Chwein-Li Wu, and Tung-Ching Chung. "Molecular Characterization of a Plasmid-Borne (pTC82) Chloramphenicol Resistance Determinant (cat-TC) fromLactobacillus reuteriG4." Plasmid 36, no. 2 (September 1996): 116–24. http://dx.doi.org/10.1006/plas.1996.0039.

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Zhukov, Ilya, Alexander Vorozhtsov, Vladimir Promakhov, Yana Dubkova, Alexander Zhukov, and Anton Khrustalev. "Powders of metal borides obtained by the SHS method and low-temperature plasma." MATEC Web of Conferences 243 (2018): 00015. http://dx.doi.org/10.1051/matecconf/201824300015.

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This paper introduces principle possibility of producing aluminum and titanium boride predetermined morphology using the SHS method and plasma processing. Thermal analysis data for synthesized boride powders in comparison with boron powder and nano-sized aluminum are presented It was found that the synthesized metal borides, according to the thermal analysis data, are promising as a fuel in high-energy materials: the oxidation state of AlB2 is ~ 80%, at a degree of boron oxidation ~ 20%, aluminum ~ 67%.

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Cheng, L., C. Dersch, E. Kraus, and B. Sacktor. "Calcium and renal adaptation to a phosphate load in the thyroparathyroidectomized rat." American Journal of Physiology-Renal Physiology 251, no. 5 (November 1, 1986): F777—F783. http://dx.doi.org/10.1152/ajprenal.1986.251.5.f777.

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Infusion of phosphate into thyroparathyroidectomized rats on a normal phosphorus diet caused a decrease in net phosphate reabsorption, even though the plasma concentration of phosphate continued to rise. This response was expressed at the level of the proximal tubule brush-border membrane and was coincident with a decrease in sodium-dependent phosphate uptake in membrane vesicles. Kinetic experiments indicated that the increased phosphate load caused a decrease in the Vmax of the membrane uptake system with no change in the apparent Km for phosphate. The infusion of phosphate resulted in a lowered plasma calcium concentration, and it was previously hypothesized that the inhibition of maximal phosphate reabsorption was mediated by the hypocalcemia. When the fall in plasma calcium was prevented by the simultaneous infusions of calcium and phosphate, the reduction in maximal phosphate reabsorption was blunted; however, the phosphate infusion-induced inhibition of brush-border membrane vesicle phosphate uptake was still evident. Thus a major discrepancy was found to the general concept that renal phosphate reabsorption in vivo correlated positively with sodium-dependent phosphate uptake activity in proximal tubule brush-border membrane vesicles. Several possible explanations to account for this anomaly were discussed. It was also found that calcium infusion into saline-infused thyroparathyroidectomized rats slightly increased maximal phosphate reabsorption but did not affect phosphate uptake in the membrane vesicles.

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Marcos-Ramiro, Beatriz, Diego García-Weber, Susana Barroso, Jorge Feito, María C. Ortega, Eva Cernuda-Morollón, Natalia Reglero-Real, et al. "RhoB controls endothelial barrier recovery by inhibiting Rac1 trafficking to the cell border." Journal of Cell Biology 213, no. 3 (May 2, 2016): 385–402. http://dx.doi.org/10.1083/jcb.201504038.

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Endothelial barrier dysfunction underlies chronic inflammatory diseases. In searching for new proteins essential to the human endothelial inflammatory response, we have found that the endosomal GTPase RhoB is up-regulated in response to inflammatory cytokines and expressed in the endothelium of some chronically inflamed tissues. We show that although RhoB and the related RhoA and RhoC play additive and redundant roles in various aspects of endothelial barrier function, RhoB specifically inhibits barrier restoration after acute cell contraction by preventing plasma membrane extension. During barrier restoration, RhoB trafficking is induced between vesicles containing RhoB nanoclusters and plasma membrane protrusions. The Rho GTPase Rac1 controls membrane spreading and stabilizes endothelial barriers. We show that RhoB colocalizes with Rac1 in endosomes and inhibits Rac1 activity and trafficking to the cell border during barrier recovery. Inhibition of endosomal trafficking impairs barrier reformation, whereas induction of Rac1 translocation to the plasma membrane accelerates it. Therefore, RhoB-specific regulation of Rac1 trafficking controls endothelial barrier integrity during inflammation.

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Singh, Varsha, Jianbo Yang, Boyoung Cha, Tiane-e. Chen, Rafiquel Sarker, Jianyi Yin, Leela Rani Avula, Ming Tse, and Mark Donowitz. "Sorting nexin 27 regulates basal and stimulated brush border trafficking of NHE3." Molecular Biology of the Cell 26, no. 11 (June 2015): 2030–43. http://dx.doi.org/10.1091/mbc.e14-12-1597.

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Sorting nexin 27 (SNX27) contains a PDZ domain that is phylogenetically related to the PDZ domains of the NHERF proteins. Studies on nonepithelial cells have shown that this protein is located in endosomes, where it regulates trafficking of cargo proteins in a PDZ domain–dependent manner. However, the role of SNX27 in trafficking of cargo proteins in epithelial cells has not been adequately explored. Here we show that SNX27 directly interacts with NHE3 (C-terminus) primarily through the SNX27 PDZ domain. A combination of knockdown and reconstitution experiments with wild type and a PDZ domain mutant (GYGF → GAGA) of SNX27 demonstrate that the PDZ domain of SNX27 is required to maintain basal NHE3 activity and surface expression of NHE3 in polarized epithelial cells. Biotinylation-based recycling and degradation studies in intestinal epithelial cells show that SNX27 is required for the exocytosis (not endocytosis) of NHE3 from early endosome to plasma membrane. SNX27 is also required to regulate the retention of NHE3 on the plasma membrane. The findings of the present study extend our understanding of PDZ-mediated recycling of cargo proteins from endosome to plasma membrane in epithelial cells.

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Danielides, M. A., and A. Kozlovsky. "Rocket-borne investigation of auroral patches in the evening sector during substorm recovery." Annales Geophysicae 21, no. 3 (March 31, 2003): 719–28. http://dx.doi.org/10.5194/angeo-21-719-2003.

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Abstract. On 11 February 1997 at 08:36 UT after a substorm onset the Auroral Turbulence 2 sounding rocket was launched from Poker Flat Research Range, Alaska into a moderately active auroral region. This experiment has allowed us to investigate evening (21:00 MLT) auroral forms at the substorm recovery, which were discrete multiple auroral arcs stretched to, the east and southeast from the breakup region, and bright auroral patches propagating westward along the arcs like a luminosity wave, which is a typical feature of the disturbed arc. The rocket crossed an auroral arc of about 40 km width, stretched along southeast direction. Auroral patches and associated electric fields formed a 200 km long periodical structure, which propagated along the arc westward at a velocity of 3 km/s, whereas the ionospheric plasma velocity inside the arc was 300 m/s westward. The spatial periodicity in the rocket data was found from optical ground-based observations, from electric field in situ measurements, as well as from ground-based magnetic observations. The bright patches were co-located with equatorward plasma flow across the arc of the order of 200 m/s in magnitude, whereas the plasma flow tended to be poleward at the intervals between the patches, where the electric field reached the magnitude of up to 20 mV/m, and these maxima were co-located with the peaks in electron precipitations indicated by the electron counter on board the rocket. Pulsations of a 70-s period were observed on the ground in the eastern component of the magnetic field and this is consistent with the moving auroral patches and the north-south plasma flows associated with them. The enhanced patch-associated electric field and fast westward propagation suggest essential differences between evening auroral patches and those occurring in the morning ionosphere. We propose the wave that propagates along the plasma sheet boundary to be a promising mechanism for the evening auroral patches.Key words. Ionosphere (auroral ionosphere; electric fields and currents)

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Makuch, Natalia, Piotr Dziarski, Michał Kulka, and Mourad Keddam. "Growth Kinetics and Some Mechanical Properties of Plasma Paste Borided Layers Produced on Nimonic 80A-Alloy." Materials 14, no. 18 (September 8, 2021): 5146. http://dx.doi.org/10.3390/ma14185146.

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Plasma paste boriding was employed in order to produce the boride layers on Nimonic 80A-alloy. The process was carried out at temperatures of 1023 K, 1073 K and 1123 K for 3, 4 and 6 h in a gas mixture of 50% H2-50% Ar. Borax paste was used as a boron source. The microstructure of the produced surface layers consisted of the mixture of nickel borides and chromium borides. The effect of processing temperature and duration on the thickness of the borided layers was observed. The theoretical thicknesses of the borided layers were estimated using an integral diffusion model. A good correlation was obtained between the theoretical (modeled) and experimental depths of the plasma paste borided layers. The boride layers were characterized by a high hardness ranging from 1160 HV to 2132 HV. The multiphase character of the produced layers resulted in differences in hardness. A significant improvement of the wear resistance of the plasma paste borided Nimonic 80A-alloy was observed in comparison with the non-borided alloy.

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Vanderpuye, O. A., C. A. Labarrere, and J. A. McIntyre. "A vitronectin-receptor-related molecule in human placental brush border membranes." Biochemical Journal 280, no. 1 (November 15, 1991): 9–17. http://dx.doi.org/10.1042/bj2800009.

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The heterodimeric vitronectin receptor (VNR) and platelet glycoprotein IIb/IIIa (GPIIb/IIIa) are two members of the integrin family of cell adhesion receptors that share the same beta subunit (GPIIIa). These proteins are involved in binding to vitronectin, fibrinogen and fibronectin and in cytoskeleton-membrane interactions. The present study shows that the human placental syncytiotrophoblast brush border membrane contains a heterodimer of subunit Mr values of 140,000 and 90,000 (non-reduced) or 125,000 and 100,000 (reduced). This protein was recognized by a monoclonal antibody to GPIIIa, rabbit antisera to the VNR and a human alloantiserum to GPIIIa. Brush border VNR-related protein bound to an immobilized peptide containing the Arg-Gly-Asp sequence and, less avidly, to immobilized fibrinogen. Only a small fraction of brush border VNR was associated with a cytoskeleton fraction. Membrane-bound brush border GPIIIa was distinct from that of platelets in its resistance to digestion by trypsin and Staphylococcus aureus V8 protease, and had a slightly lower mobility on SDS/PAGE. In addition, lectin-binding studies indicate glycosylation differences between microvillar and platelet GPIIIa heterodimers. Thus, although placental syncytiotrophoblast expresses a beta 3 integrin in its apical brush border, differences in protease sensitivity and carbohydrate content suggest that it may lack or mask certain antigenic determinants. This may be beneficial in avoiding harmful maternal alloantibody responses during pregnancy. Immunohistology showed that the VNR was present in syncytiotrophoblast apical but not basal plasma membranes, and was absent from other forms of trophoblast. The brush border VNR could function in localizing Arg-Gly-Asp-sequence-containing plasma proteins to the materno-trophoblastic interface.

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Liu, Jun Hu, Bart Blanpain, and Patrick Wollants. "A XPS Study of Atmospheric Plasma Sprayed TiB₂ Coatings." Key Engineering Materials 368-372 (February 2008): 1347–50. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.1347.

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TiB2 coatings were plasma sprayed in air and were studied by XPS. There are five elements in the top surface of the studied coatings, namely, B, C, N, O and Ti. Oxygen pick-up in the coatings results in formation of oxides of boron and titanium. Nitrogen was shown to exist in N-Ti and O-N-Ti in the coating. Depending on the spraying parameters, mono-boride as well as di-boride was also detected in the studied coatings. With careful peak fitting it was shown that oxygen may exist in the coating as dissolved atomic O in addition to as lattice oxygen in the oxide of boron and titanium.

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Papageorgiou, Loula, Kutaiba Alhaj Hussen, Sandrine Thouroude, Elisabeth Mbemba, Héléne Cost, Laurent Garderet, Ismail Elalamy, et al. "Modelization of Blood-Borne Hypercoagulability in Myeloma: A Tissue-Factor-Bearing Microparticle-Driven Process." TH Open 03, no. 04 (October 2019): e340-e347. http://dx.doi.org/10.1055/s-0039-1700885.

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Abstract Introduction Hypercoagulability is a common blood alteration in newly diagnosed chemotherapy naïve patients with multiple myeloma. The identification of the procoagulant potential of cancer cells, which is principally related to tissue factor (TF) expression, attracts particular interest. The mechanisms by which myeloma plasma cells (MPCs) activate blood coagulation have been poorly investigated. Aim To identify the principal actors related with MPCs that boost thrombin generation (TG). Methods TF and annexin V expression by MPCs and MPC-derived microparticles (MPC-dMPs) was analyzed by flow cytometry. TF activity (TFa) and TF gene expression were also determined. TG in the presence of MPCs or MPC-dMPs was assessed with the calibrated automated thrombogram assay (CAT) in normal human PPP and in plasma depleted of factor VII or XII. TG was also assessed in plasma spiked with MPCs and MPC-dMPs. Results MPC-dMPs expressed approximately twofold higher levels of TF as compared with MPCs. The TFa expressed by MPC-dMPs was significantly higher compared with that expressed by MPCs. MPCs and MPC-dMPs enhanced TG of human plasma. TG was significantly higher with MPC-dMPs compared with MPCs. Conclusion MPCs indirectly induce blood-borne hypercoagulability through the release of MPC-dMPs rich in TF. Since MPCs, expressing low TFa, represent a weak procoagulant stimulus, the hypercoagulability at the microenvironment could be the resultant of MPC-dMPs rich in TF.

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Kim, Minseok, Jeong-Hwan Oh, Tae-Hee Kim, Yong Hee Lee, Seung-Hyun Hong, and Sooseok Choi. "Synthesis of Metal Boride Nanoparticles Using Triple Thermal Plasma Jet System." Journal of Nanoscience and Nanotechnology 19, no. 10 (October 1, 2019): 6264–70. http://dx.doi.org/10.1166/jnn.2019.17026.

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Journal articles on the topic 'Plasma du borde'

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