Results 61 to 70 of about 1,581,579 (180)

Bases of inorganic and organic chemistry [PDF]

open access: yes, 2016
Stated fundamental theoretical principles of general, inorganic and organic chemistry and analyzed the reactivity of the most important classes of inorganic and organic substances. A multivariate tasks and exercises for classroom and independent work are
Alami, D., Slavkova, M., Ved, M.
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High Resolution Spectrometry of Leaf and Canopy Chemistry for Biochemical Cycling [PDF]

open access: yes, 1985
High-resolution laboratory spectrophotometer and Airborne Imaging Spectrometer (AIS) data were used to analyze forest leaf and canopy chemistry. Fundamental stretching frequencies of organic bonds in the visible, near infrared and short-wave infrared are
Acevedo, W.   +3 more
core   +1 more source

Genome-inspired molecular identification in organic matter via Raman spectroscopy

open access: yes, 2016
Rapid, non-destructive characterization of molecular level chemistry for organic matter (OM) is experimentally challenging. Raman spectroscopy is one of the most widely used techniques for non-destructive chemical characterization, although it currently ...
Bryndzia, L. Taras   +3 more
core   +1 more source

Figure-of-merit calculation methods for organic heat-pipe fluids [PDF]

open access: yes
With only chemical formulas and operating temperatures specified, selected correlating equations and tables of chemistry-effect functions allow estimates of figures of merit for organic heat-pipe ...
Morris, J. F.
core   +1 more source

Lithiation of 4-membered heterocycles as useful strategy for the preparation of new molecular scaffolds: addressing the regioselectivity in azetidines and thietanes [PDF]

open access: yes, 2013
Four-membered heterocycles (4-MH) with one or two heteroatoms are of great importance in medicinal chemistry and synthetic organic chemistry. This kind of scaffolds show peculiar structural features, related to the ring “puckering”, and biological ...
Carroccia, Laura   +7 more
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The pH and ionic composition of the sub-embryonic fluid of the Japanese quail (Coturnix c. japonica) [PDF]

open access: yes, 2005
The current theory of acid-base chemistry regards [H+] as a dependent variable: changes in pH of a fluid can only occur by alteration of strong ion concentrations ([Na+], [K+], [Cl-]).
Baggott, Glenn K., Pellet-Many, C
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Students’ & Faculty Members’ Attitudes Towards Learning and Teaching Reaction Mechanisms in Organic Chemistry

open access: yesEducation Sciences
Organic Chemistry has typically been identified as a difficult course for many undergraduate students and has a notoriously high failure rate. The part of the subject dealing with reaction mechanisms is considered the most challenging area, and several ...
Oluwatobi Odeleye, Nghiem Tieu
doaj   +1 more source

Expedient Access to Enantiopure Cyclopentanic Natural Products: Total Synthesis of (-)-Cyclonerodiol

open access: yesNatural Product Communications, 2015
Following the principles of collective total synthesis, a number of natural products sharing an optically pure, multifunctional, cyclopentanic core were synthesized from a common precursor: plinol A ( 1 ).
Carmen Pérez Morales   +3 more
doaj   +1 more source

Arbuscular mycorrhizal fungi in organic systems [PDF]

open access: yes, 2004
Arbuscular mycorrhizal fungi (AMF) are potential contributors to plant nutrition and pathogen suppression in low input agricultural systems, although individual species of AMF vary widely in their functional attributes.
Bending, Gary   +3 more
core  

Tailored novel phosphonate-based hybrid materials by design for diverse applications [PDF]

open access: yes, 2018
Hybrid materials are composed of an organic and an inorganic part, placed together in such a way that the final product has defined structures and properties.
Demadis, Konstantinos D.
core  

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