Results 21 to 30 of about 1,857,239 (379)

Optimization of Cultural Conditions for Production of Antibacterial Metabolites from <i>Streptomyces coelicoflavus</i> BC 01

open access: yesNotulae Scientia Biologicae, 2015
The aim of the present study was to optimize various cultural conditions for the production of antibacterial metabolites by Streptomyces coelicoflavus BC 01 isolated from mangrove soil, Visakhapatnam, Andhra Pradesh, India.
Kothagorla Venkata RAGHAVA RAO   +3 more
doaj   +3 more sources

Microstructural and magnetic properties of Ni1-xCuxFe2O4 (x = 0.05, 0.1 and 0.15) nano-crystalline ferrites

open access: yesJournal of Science: Advanced Materials and Devices, 2018
:: An attempt was made to synthesize Ni1-xCuxFe2O4 (x = 0.05, 0.1 and 0.15) nano-crystalline ferrites by sol–gel auto-combustion method and study their micro-structural, magnetic and dielectric properties. From the X-ray diffraction patterns, the lattice
K.Vijaya Babu   +4 more
doaj   +1 more source

A 530-GHz balanced mixer [PDF]

open access: yes, 1999
We report on the design and performance of a 530-GHz balanced SIS mixer, the first balanced mixer in this frequency range. This quasi-optical balanced mixer utilizes a cross-slot antenna on a hyperhemispherical substrate lens with eight superconductor ...
Chattopadhyay, Goutam   +4 more
core   +1 more source

Spatial characteristics of aerosol physical properties over the northeastern parts of peninsular India [PDF]

open access: yesAnnales Geophysicae, 2005
Measurements on aerosol spectral optical depths and near surface mass-size distributions made at several locations in the states of Andhra Pradesh, Orissa and Chattisgarh, constituting the northeastern part of the peninsular India during the ISRO-GBP ...
K. Niranjan   +5 more
doaj   +1 more source

HF Doppler radar observations of sporadic E at an Indian low latitude station, Visakhapatnam [PDF]

open access: yesAnnales Geophysicae, 2009
5.5 MHz HF Doppler radar observations of Sporadic E over an Indian low latitude station, Visakhapatnam (17.7° N, 83.3° E and Dip 20°) with 10 s resolution showed quasi-periodic variations of the echo strength and Doppler velocity ...
M. S. S. R. K. N. Sarma   +2 more
doaj   +1 more source

Space VLBI Observations Show $T_b > 10^{12} K$ in the Quasar NRAO 530 [PDF]

open access: yes, 1998
We present here space-based VLBI observations with VSOP and a southern hemisphere ground array of the gamma-ray blazar NRAO 530 at 1.6 GHz and 5 GHz. The brightness temperature of the core at 1.6 GHz is $5 \times 10^{11}$ K.
Donald C. Backer   +3 more
core   +3 more sources

Increased leukotoxin production: Characterization of 100 base pairs within the 530 base pair leukotoxin promoter region of Aggregatibacter actinomycetemcomitans

open access: yesScientific Reports, 2017
Aggregatibacter actinomycetemcomitans leukotoxin (LtxA) is a major virulence factor that kills leukocytes permitting it’s escape from host immune surveillance. A. actinomycetemcomitans strains can produce high or low levels of toxin.
V. Sampathkumar   +3 more
semanticscholar   +1 more source

Protonation Equilibria of L-Aspartic, Citric and Succinic Acids in Anionic Micellar Media

open access: yesE-Journal of Chemistry, 2009
The impact of sodium lauryl sulphate (SLS) on the protonation equilibria of L-aspartic acid, citric acid and succinic acid has been studied in various concentrations (0.5-2.5% w/v) of SLS solution maintaining an ionic strength of 0.16 mol dm-3 at 303 K ...
P. Srinivasa Rao   +4 more
doaj   +1 more source

Chetracins E and F, cytotoxic epipolythiodioxopiperazines from the marine-derived fungus Acrostalagmus luteoalbus HDN13-530

open access: yes, 2018
Two new epipolythiodioxopiperazines, named chetracins E and F (1 and 2), along with the known chetracin C (3), were isolated from the fungus Acrostalagmus luteoalbus HDN13-530. Their structures were elucidated based on the NMR, MS and CD data, as well as
Guihong Yu   +9 more
semanticscholar   +1 more source

Longitudinal effects of race, ethnicity, and psychosocial disadvantage on systemic inflammation

open access: yesSSM: Population Health, 2019
Objective: Psychosocial factors likely contribute to racial and ethnic inequalities in cardiovascular diseases (CVDs). However, precise social, psychological, and physiological pathways linking race and ethnicity to the development of CVDs are not well ...
Laura B. Zahodne   +4 more
doaj   +1 more source

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