Results 41 to 50 of about 33,516 (176)

Effects of organic fertilisers and compost extracts on organic tomato production [PDF]

open access: yes, 2006
The effects of various fertilizers and different compost extracts on crop health and tomato yield were studied in the field in 2004–2005 in two locations in Iran.
Asadi, G A   +3 more
core  

The Temperature Scale of Metal-Rich M Giants Based on TiO Bands: Population Synthesis in the Near Infrared [PDF]

open access: yes, 1998
We have computed a grid of high resolution synthetic spectra for cool stars ...
Alvarez R.   +20 more
core   +2 more sources

Yb2‐Tb Upconversion in a Hetero‐Trimetallic Molecular Lanthanide Complex

open access: yesAngewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Lanthanides are at the forefront of photon upconversion in molecular systems; however, the chemical nature of the lanthanides makes site‐specific coordination chemistry difficult to achieve. Here, we employ kinetically stabile building blocks to achieve hetero‐trimetallic 4f complexes with complete site‐specific chemical control.
Nicolaj Kofod   +8 more
wiley   +1 more source

Heart catheter cable and connector [PDF]

open access: yes, 1972
Ultraminiature catheter cables that are stiff enough for intravenous insertion yet flexible at the tip, sterilizable, and economical are fabricated entirely from commercially available parts.
Cota, F. L.   +2 more
core   +1 more source

A direct empirical proof of the existence of dark matter [PDF]

open access: yes, 2006
We present new weak lensing observations of 1E0657-558 (z=0.296), a unique cluster merger, that enable a direct detection of dark matter, independent of assumptions regarding the nature of the gravitational force law. Due to the collision of two clusters,
Anthony H. Gonzalez   +11 more
core   +3 more sources

π‐Expanded Fluoranthenes as Chromophores With Tailored Properties

open access: yesHelvetica Chimica Acta, Volume 109, Issue 3, March 2026.
A series of π‐expanded fluoranthene scaffolds selectively functionalized with electron donors and acceptors were synthesized. The evolution of the structural, optoelectronic, and redox properties in relation to substitution and cyclization was comprehensively studied both in experiment and in theory. The results identify the compounds as highly tunable
Silas C. Eiden   +4 more
wiley   +1 more source

Inertia diaphragm pressure transducer [PDF]

open access: yes, 1971
Transducer measures gas pressure profiles in high temperature, short duration, gas flows usually found in devices where pressure pulses may have durations of few microseconds to several milliseconds. Assembly includes fluid delay line, delay chamber, and
Seegmiller, H. L. B.
core   +1 more source

Heavy Flavour Baryons in Hyper Central Model

open access: yes, 2008
Heavy flavor baryons containing single and double charm (beauty) quarks with light flavor combinations are studied using the hyper central description of the three-body problem.
A. K. Rai   +16 more
core   +1 more source

The brightest pure-H ultracool white dwarf [PDF]

open access: yes, 2012
We report the identification of LSR J0745+2627 in the United Kingdom InfraRed Telescope Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) as a cool white dwarf with kinematics and age compatible with the thick-disk/halo population. LSR J0745+2627
Catalan, S.   +11 more
core   +2 more sources

Metastatic potential of small posterior uveal melanomas

open access: yesActa Ophthalmologica, Volume 104, Issue 2, Page e191-e203, March 2026.
Abstract Purpose To investigate the prevalence of aggressive traits in small posterior uveal melanomas (UM). Methods This retrospective, multicentre cohort study included 804 patients with small posterior UM (≤9 mm in largest basal diameter, ≤3 mm in thickness) from centres in the UK, Germany, and Sweden.
Gustav Stålhammar   +9 more
wiley   +1 more source

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