Search results for "PSO."

The planar two-body problem for spheroids and disks

2021

We outline a new method suggested by Conway (2016) for solving the two-body problem for solid bodies of spheroidal or ellipsoidal shape. The method is based on integrating the gravitational potential of one body over the surface of the other body. When the gravitational potential can be analytically expressed (as for spheroids or ellipsoids), the gravitational force and mutual gravitational potential can be formulated as a surface integral instead of a volume integral, and solved numerically. If the two bodies are infinitely thin disks, the surface integral has an analytical solution. The method is exact as the force and mutual potential appear in closed-form expressions, and does not invol…

Chemical Constituents and Pharmacological Properties ofPoria cocos

2011

Poria cocos (Polyporaceae) is a saprophytic fungus that grows in diverse species of Pinus. Its sclerotium, called fu-ling or hoelen, is used in traditional Chinese and Japanese medicine for its diuretic, sedative, and tonic effects. Various studies of this fungus have demonstrated its marked anti-inflammatory activity in different experimental models of acute and chronic inflammation. It is widely used as a constituent of many preparations in Asian medicine, but the number of research papers on its clinical properties is insufficient for establishing its efficacy and safety from a scientific point of view. In this review, we have compiled all the published data concerning the chemistry, pha…

The Clinical Enzymology of the Complement System

1989

The complement (C) system is one of the most important humoral systems mediating many activities that contribute to inflammation and host defense, e.g. various anaphylatoxin activities, Chemotaxis and opsonization for phagocytosis. The C system is similar to other humoral systems, such as coagulation, fibrinolysis and the kinin system, a multifactoral system whose activation represents sequentially occurring multi-step activation cascades of the “classical” as well as the “alternative” pathway.

Increased Stress Resistance and Lifespan in Chaenorhabditis elegans Wildtype and Knockout Mutants—Implications for Depression Treatment by Medicinal …

2021

Depression and anxiety disorders are widespread diseases, and they belong to the leading causes of disability and greatest burdens on healthcare systems worldwide. It is expected that the numbers will dramatically rise during the COVID-19 pandemic. Established medications are not sufficient to adequately treat depression and are not available for everyone. Plants from traditional medicine may be promising alternatives to treat depressive symptoms. The model organism Chaenorhabditis elegans was used to assess the stress reducing effects of methanol/dichlormethane extracts from plants used in traditional medicine. After initial screening for antioxidant activity, nine extracts were selected f…

Aprūpe pacientiem ar psoriāzi

2015

Psoriāze ir viena no izplatītākām ādas slimībām mūsdienās. Māsai strādājot dermatoloģijas nozerē un aprūpējot pacientus ar psoriāzi, jāzina svarīgākie aprūpes virzieni un specifika šādiem pacientiem. Balstoties uz iepriekš minēto tēmas aktualitāti bakalaura darbam izvēlēta tēma „Aprūpe pacientiem ar psoriāzi”. Bakalaura darbā izvirzīts mērķis: noteikt pacientu aprūpi psoriāzes saslimšanas gadījumā. Izvirzīta hipotēze: pacientu aprūpe psoriāzes gadījumā balstās uz fizioloģisko datu analīzi un aprūpes procesa nepārtrauktību. Bakalaura darba ietvaros tika veikta literatūras analīze, kura sastāvēja no 4 nodaļām un apakšnodaļām, kurās apskatīta B. Ņūmanes sistēmas teorijas pielietojums, psoriāze…

In-situ characterisation of organosilane films formation on aluminium alloys by electrochemical quartz crystal microbalance and in-situ ellipsometry

2005

Abstract Organosilane pre-treatments have been studied intensively during the last years in order to replace hexavalent chromium conversion treatments. The aim of this study is to follow in-situ the formation of this organosilane layer in solution. Two in-situ techniques, spectroscopic ellipsometry and electrochemical quartz crystal microbalance, were used to investigate the mechanism and the kinetics of this protective film formation. In-situ measurements highlight that the organosilane film observed after the drying process is not formed into the solution, but during the emersion and drying step. Hence, it has been possible to characterise the presence of a very thin organosilane layer in…

Ellipsometric and fluorescence microscopic investigations of a cyclam derivative at the air/water interface

1993

Ellipsometric thickness and coverage of physisorbed layers of Xe, Kr, Ar and N2 on graphite

1990

Multilayer isotherms of Xe, Kr, Ar and N2 physisorbed on graphite (001) have been studied by ellipsometry. It is shown that the model of Dignam and Fedyk provides an excellent basis for the interpretation of the ellipsometric thickness in terms of the coverage and the polarizability of the admolecules. For N2 conclusions concerning the orientation of the molecule are drawn.

A TNF-α Promoter Polymorphism Is Associated with Juvenile Onset Psoriasis and Psoriatic Arthritis

1997

Tumor necrosis factor-α is considered to be one of the important mediators in the pathogenesis of psoriasis. A strong association of juvenile onset psoriasis with the major histocompatibility complex encoded HLA-Cw6 antigen has been reported but it is unclear whether Cw6 itself or a closely linked gene is involved in the pathogenesis. This study has focused on the association of promoter polymorphisms of the major histocompatibility complex encoded tumor necrosis factor-α gene with psoriasis and psoriatic arthritis. Tumor necrosis factor-α promoter polymorphisms were sought by sequence-specific oligonucleotide hybridization and by direct sequencing in Caucasian patients with juvenile onset …

Histopathology of the gut in rheumatic diseases

2018

The gastrointestinal tract regulates the trafficking of macromolecules between the environment and the host through an epithelial barrier mechanism and is an important part of the immune system controlling the equilibrium between tolerance and immunity to non-self-antigens. Various evidence indicates that intestinal inflammation occurs in patients with rheumatic diseases. In many rheumatic diseases intestinal inflammation appears to be linked to dysbiosis and possibly represents the common denominator in the pathogenesis of different rheumatic diseases. The continuative interaction between dysbiosis and the intestinal immune system may lead to the aberrant activation of immune cells that ca…