We show that the extinction of quasar absorbers increases exponentially with the logarithmic column density of any volatile metal (e.g. zinc), with a charateristic turning point above which the quasars are severely dimmed. We derive the relation between extinction, HI column density (NHI), metallicity (Z ≡ NZnII/NHI) and fraction of iron in dust [fFe(Z)] in Damped Lyman α (DLA) systems. We use ...

Herein we report the possibility of using green and red emitting silica-coated cadmium selenide (CdSe) quantum dots (QDs) for remarkable stem and cancer cellular imaging, efficient cellular uptake and fluorescence imaging of semi and ultra-thin sections of tumor for in vivo tumor targeted imaging applications. The comparative studies of high contrast cellular imaging behaviours of the silica-co...

the present study was intended to standardize the protocol for the synthesis of silver nanoparticles (agnps) using aqueous extract of dictyota bartayresiana j.v. lamouroux and evaluate cytotoxic potentials using brine shrimp bio-assay activity and trypan blue dye exclusion method. the reduction of pure ag+ ions was monitored by measuring the uv-vis spectrum of the solution at 200-900 nm and the...

Let A(t) denote the cluster produced by internal diffusion limited aggregation (internal DLA) with t particles in dimension d ≥ 3. We show that A(t) is approximately spherical, up to an O( √ log t) error. In the process known as internal diffusion limited aggregation (internal DLA) one constructs for each integer time t ≥ 0 an occupied set A(t) ⊂ Zd as follows: begin with A(0) = ∅ and A(1) = {0...

Let each of n particles starting at the origin in Z perform simple random walk until reaching a site with no other particles. Lawler, Bramson, and Griffeath proved that the resulting random set A(n) of n occupied sites is (with high probability) close to a disk Br of radius r = √ n/π. We show that the discrepancy between A(n) and the disk is at most logarithmic in the radius: i.e., there is an ...

Methanol extract of Indigofera linnaei (MEIL) was investigated for antitumor, cytotoxic and antioxidant activities against transplantable tumors and human cancer cell lines. In vitro cytotoxicity was evaluated in HeLa, Hep-2, HepG-2, MCF-7, HT-29, Vero and NIH 3T3 cells by MTT assay and in vivo antitumor activity with Ehrlich ascites carcinoma (EAC) and Dalton's ascites lymphoma (DLA) tumor-bea...

Tutaj przychodzi karta pracy dyplomowej; oryginał wstawiamy do wersji dla archiwum PP, w pozostałych kopiach wstawiamy ksero.

Nitrogen lines of the NI 1134Å and 1200Å multiplets in the Damped Lyα (DLA) galaxies at z abs = 2.309, 2.827 and 3.025 toward the QSOs 0100+1300, 1425+6039 and 0347−3819 respectively, have been detected by means of high resolution spectra (R ∼ 2 × 10 4) obtained with 4-m class telescopes at ESO (La Silla, Chile) and ORM (La Palma, Spain). The two NI multiplets offer a considerable range in osci...

The Doctor of Liberal Arts (DLA) is designed for the experienced adult learner who wishes to pursue rigorous interdisciplinary study along with independent, scholarly reading and research. The degree is designed to cultivate interdisciplinary skills, intellectual habits, analytical and critical reasoning, effective writing, and broad-based decision making. The DLA is primarily for working profe...

An early (and influential) scaling relation in the multifractal theory of diffusion limited aggregation (DLA) is the Turkevich-Scher conjecture that relates the exponent alpha(min) that characterizes the "hottest" region of the harmonic measure and the fractal dimension D of the cluster, i.e., D=1+alpha(min). Due to lack of accurate direct measurements of both D and alpha(min), this conjecture ...