Results 41 to 50 of about 5,568,953 (372)
Perturbative Dynamics of Fractional Strings on Multiply Wound D-strings
, 1996 Fractional strings in the spectrum of states of open strings attached to a multiply wound D-brane is explained. We first describe the fractional string states in the low-energy effective theory where the topology of multiple winding is encoded in the ...
Akikazu Hashimoto +1 more
core +2 more sources
African Journal of Laboratory Medicine, 2022 Background: Laboratories use quality control processes to monitor and evaluate analytical performance in terms of precision and bias. Sigma metrics provide an objective assessment of laboratory quality using the total allowable error as an additional ...
Marli van Heerden +2 more
doaj +1 more source
Ward Identities in Two-Dimensional String Theory
, 1992 I study the Ward identities of the $w_\infty$ symmetry of the two-dimensional string theory. It is found that, not just an isolated vertex operator, but also a number of vertex operators colliding at a point can produce local charge non-conservation. The
Igor R. Klebanov +1 more
core +2 more sources
Unitarity Relations in c=1 Liouville Theory
, 1992 We consider the S-matrix of c=1 Liouville theory with vanishing cosmological constant. We examine some of the constraints imposed by unitarity. These completely determine (N,2) amplitudes at tree level in terms of the (N,1) amplitudes when the plus ...
David A. Lowe, Joseph Henry Laboratories
core +2 more sources
Commentary to "Turning Virtual Public Spaces into Laboratories" [PDF]
, 2014 Evaluates a criticism based on privacy and other ethical grounds of Bond's study using 61 million persons on Facebook to determine whether political mobilization messages shared on social media can influence voting ...
Tunick, Mark
core +1 more source
Caspian Journal of Internal Medicine, 2021 Background: Rheumatoid arthritis (RA) is the most common chronic inflammatory joint disease. Complications of RA can cause low quality of life and disabilities. Nowadays, despite all the medical developments, etiology of RA is unclear. Both soft and hard
Simin Almasi +5 more
doaj
Education and Information Technologies : Official Journal of the IFIP technical committee on Education, 2019 Building a virtual laboratory for teaching and learning is a highly complex process, incorporating diverse areas such as interaction design, visualisation, and pedagogy.
B. Stahre Wästberg +5 more
semanticscholar +1 more source
Some Laboratory Aids for a Clinical Laboratory
Clinical Chemistry, 1959 Abstract A power supply for laboratory instruments is described which has the following advantages. 1. It has greater utility than any commercially available unit now on the market and includes disaster planning in its construction. 2.
H H, SCHEPERS, R G, MARTINEK
openaire +2 more sources
Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells
FEBS Letters, EarlyView.Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan +2 more
wiley +1 more source
FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source