Results 21 to 30 of about 2,587,577 (305)
Cucurbitacins from the Leaves of Citrullus colocynthis (L.) Schrad
Two new tetracyclic cucurbitane-type triterpene glycosides were isolated from an ethyl acetate extract of Citrullus colocynthis leaves together with four known cucurbitacins.
Rachid Chawech +7 more
doaj +1 more source
The dynamic response characteristics, including maximum jump height and unbalanced tension, of isolated‐span transmission lines after ice‐shedding are investigated by means of experiments.
Guizao Huang +4 more
doaj +1 more source
Several simple and prenylated coumarin derivatives were isolated from the dichloromethane extract of the root of Neocryptodiscus papillaris based on moderate cytotoxic activity of the extract in COLO205, KM12 and MCF7 cancer cells.
Fatma Tosun +4 more
doaj +1 more source
APLNR marks a cardiac progenitor derived with human induced pluripotent stem cells
Cardiomyocytes can be readily derived from human induced pluripotent stem cell (hiPSC) lines, yet its efficacy varies across different batches of the same and different hiPSC lines.
Yin-Yu Lam +5 more
doaj +1 more source
The Magnificent Seven: Magnetic fields and surface temperature distributions [PDF]
Presently seven nearby radio-quiet isolated neutron stars discovered in ROSAT data and characterized by thermal X-ray spectra are known. They exhibit very similar properties and despite intensive searches their number remained constant since 2001 which ...
A. Treves +64 more
core +2 more sources
Electron Collisional Broadening of Isolated Lines from Multiply-Ionized Atoms [PDF]
Recent experimental and theoretical (both improved semiclassical and fully quantum-mechanical) results for B III and Ne VII delta n = 0 transitions with n = 2 or 3, respectively, are discussed.
Ahmad +42 more
core +3 more sources
Three New Cytotoxic ent-Kaurane Diterpenes from Isodon excisoides
Three types of ent-kaurane diterpenoids were isolated from the aerial parts of Isodon excisoides, including three new diterpenoids, 1α,7α,14β-trihydroxy-20-acetoxy-ent-kaur-15-one (1); 1α,7α,14β,18-tetrahydroxy-20-acetoxy-ent-kaur-15-one (2); and 1α ...
Li-Ping Dai +6 more
doaj +1 more source
On the nature of reconnection at a solar coronal null point above a separatrix dome [PDF]
Three-dimensional magnetic null points are ubiquitous in the solar corona, and in any generic mixed-polarity magnetic field. We consider magnetic reconnection at an isolated coronal null point, whose fan field lines form a dome structure.
Galsgaard, K. +2 more
core +3 more sources
High efficiency transfection of thymic epithelial cell lines and primary thymic epithelial cells by Nucleofection [PDF]
Thymic epithelial cells (TECs) are required for the development and differentiation of T cells and are sufficient for the positive and negative selection of developing T cells.
Brian G. Condie +2 more
core +2 more sources
Growth Inhibitory Effect of Palatine Tonsil-derived Mesenchymal Stem Cells on Head and Neck Squamous Cell Carcinoma Cells [PDF]
ObjectivesMesenchymal stem cells (MSCs) play an important role in the development and growth of tumor cells. However, the effect of human MSCs on the growth of human tumors is not well understood. The purpose of this study is to confirm the growth effect
Yun-Sung Lim +4 more
doaj +1 more source

