Competitive hydrogenation/dehalogenation of halogenoarenes with surfactant-stabilized aqueous suspensions of rhodium and palladium colloids: A major effect of the metal nature

2007 ◽  
Vol 266 (1-2) ◽  
pp. 221-225 ◽  
Author(s):  
Bastien Léger ◽  
Audrey Nowicki ◽  
Alain Roucoux ◽  
Jean-Paul Rolland
Keyword(s):  
Major Effect ◽  
Aqueous Suspensions ◽  
Competitive Hydrogenation ◽  
Metal Nature

Properties of Washed Human Platelets

1977 ◽  
Vol 37 (02) ◽  
pp. 291-308 ◽  
Author(s):  
Raelene L Kinlough-Rathbone ◽  
J Fraser Mustard ◽  
Marian A Packham ◽  
Dennis W Perry ◽  
Hans-Joachim Reimers ◽  
...  
Keyword(s):  
Major Effect ◽  
Human Platelets ◽  
Immune Serum ◽  
Immune Serum Globulin ◽  
Serum Globulin ◽  
Platelet Adherence ◽  
Low Concentrations ◽  
Induced Aggregation ◽  
Extensive Release ◽  
Protein Free Medium

SummaryWe have shown previously that washed human platelets resuspended in Tyrode solution containing albumin and apyrase maintain their disc shape and their ability to aggregate upon the addition of low concentrations of ADP, providing fibrinogen is added to the suspending medium. We have now examined their responses to other aggregating and release-inducing agents. Collagen, arachidonate, thrombin, immune serum globulin, the ionophore A 23, 187 and phytohaemagglutinin from Phaseolus vulgaris caused aggregation and release of granule contents. The response to adrenaline was variable. Serotonin caused the platelets to change shape but no aggregation or release occurred. Addition of a small amount of plasma was necessary for ristocetin-induced aggregation. Polylysine caused immediate platelet-to-platelet adherence with little or no release of granule contents. Responses to collagen or thrombin were greater in a modified medium containing magnesium but no calcium; in this medium, aggregation caused by ADP or polylysine was followed by the release of granule contents whereas these agents caused aggregation without release in a medium with both calcium and magnesium. When protein was omitted from the suspending medium, platelet aggregation in response to ADP was variable. In this medium, collagen and thrombin caused more extensive release than in the albumin-containing medium. Aggregation by polylysine was accompanied by release and extensive lysis in the protein-free medium. Thus, the composition of the final resuspending medium has a major effect on the responses of washed human platelets to aggregating agents.

Pituitary and ovarian response to transient doe-litter separation in nursing rabbits

Reproduction ◽  
2000 ◽  
pp. 361-366 ◽  
Author(s):  
E Ubilla ◽  
PG Rebollar ◽  
D Pazo ◽  
AI Esquifino ◽  
JM Alvarino
Keyword(s):  
Pituitary Gland ◽  
Litter Size ◽  
Artificial Insemination ◽  
Ovarian Response ◽  
Major Effect ◽  
Free Access ◽  
Plasma Prolactin ◽  
Follicular Waves ◽  
Higher Sensitivity

The effects of a transient doe-litter separation on plasma prolactin, FSH and oestradiol concentrations, as well as the effect on LH response to exogenous GnRH administered at the time of artificial insemination, were determined in nursing rabbits. The effects on fertility, and litter size after parturition, as well as litter survival after doe-litter separation, were also studied. Control does (n = 12) had free access to nursing, whereas biostimulated does (n = 12) were separated from their litters for 48 h before artificial insemination. Plasma prolactin concentrations were decreased 24 h after the doe-litter separation (P < 0.05). The response of prolactin to suckling reached 10 times the basal values measured on day 10 after parturition (P < 0.0001). Increased oestradiol concentrations were found during the 48 h after the doe-litter separation: at 0 h, before artificial insemination (P< 0. 0001), 1.0-2.0 h after artificial insemination (P < 0.001), at 2.5 h (P < 0.05), 3.0 h (P < 0.01), and at 3.5 h (P < 0.05) after artificial insemination. Exogenous GnRH administered at the time of artificial insemination caused a greater LH response in does previously separated from their litters during 48 h (P < 0.01). The transient doe-litter separation did not affect plasma FSH concentrations, fertility, litter size or litter survival. These results suggest that a transient separation of nursing does from their litters before artificial insemination results in a decrease in plasma prolactin concentrations that could promote growth of follicular waves, and high steroidogenesis activity, leading to increased oestradiol concentrations and inducing higher sensitivity of the pituitary gland to exogenous GnRH. These findings associated to the absence of suckling episodes would lead to higher LH response and, therefore, exert a major effect on fertility.

Coagulation-condensation structure formation in aqueous suspensions of mixtures of sulfur and gypsum

2013 ◽  
Vol 0 (1) ◽  
pp. 122
Author(s):  
K. Toshtay ◽  
Kuanyshbek Mussabekov ◽  
S. Kumargaliyeva ◽  
С. Turganbay ◽  
Inal Bakhytkyzy
Keyword(s):  
Structure Formation ◽  
Aqueous Suspensions ◽  
Condensation Structure

Tire-Road Interactions — Harmony or Conflict?

1989 ◽  
Vol 17 (1) ◽  
pp. 66-84
Author(s):  
A. R. Williams
Keyword(s):  
Rolling Resistance ◽  
Major Effect ◽  
Road Surface ◽  
Interactive Effects ◽  
Central Theme ◽  
Water Drainage ◽  
The Road ◽  
Truck Tires ◽  
Road Surfaces ◽  
Tire Wear

Abstract This is a summary of work by the author and his colleagues, as well as by others reported in the literature, that demonstrate a need for considering a vehicle, its tires, and the road surface as a system. The central theme is interaction at the footprint, especially that of truck tires. Individual and interactive effects of road and tires are considered under the major topics of road aggregate (macroscopic and microscopic properties), development of a novel road surface, safety, noise, rolling resistance, riding comfort, water drainage by both road and tire, development of tire tread compounds and a proving ground, and influence of tire wear on wet traction. A general conclusion is that road surfaces have both the major effect and the greater potential for improvement.

Competitive hydrogenation of olefinic substrates in multicomponent systems

1978 ◽  
Vol 43 (9) ◽  
pp. 2387-2394 ◽  
Author(s):  
Libor Červený ◽  
Dana Plecháčová ◽  
Vlastimil Růžička
Keyword(s):  
Multicomponent Systems ◽  
Competitive Hydrogenation

scholarly journals Systematic Review of Alexithymia in the Population of Hemodialysis Patients

2021 ◽  
Vol 10 (13) ◽  
pp. 2862
Author(s):  
Đorđe Pojatić ◽  
Ivana Tolj ◽  
Davorin Pezerović ◽  
Dunja Degmečić
Keyword(s):  
Mental Health ◽  
Literature Review ◽  
Web Of Science ◽  
Major Effect ◽  
Hemodialysis Patients ◽  
Bibliographic Databases ◽  
Inclusion Criteria ◽  
The Matrix ◽  
Negative Effect ◽  
Bodily Sensations

Alexithymia is a construct defined as the inability to differentiate between emotional experiences and bodily sensations. According to existing knowledge, alexithymia may have a major effect on the process of treatment and the outcome of the hemodialysis disease. The objective of this literature review was to determine the significance that alexithymia has for compliance and variables of clinical and mental health in the population of hemodialysis patients. For the above purpose, bibliographic databases “MEDLINE” and “Web of Science” were searched. The matrix method was used in analysis of articles. Searching both databases resulted in 248 articles. After applying exclusion and inclusion criteria, we included results of 13 articles in the literature review. The results of the search are findings regarding the prevalence and correlation of alexithymia with variables of clinical and mental health in hemodialysis patients. Alexithymia is significantly more common in the population of hemodialysis patients, and it has a negative effect on their mental and somatic health. Alexithymia levels in hemodialysis patients are more pronounced in cases where there is a greater number of comorbidities. Alexithymia is the predictor of high mortality rate in the population of hemodialysis patients, independent of other comorbidities.

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