Results 51 to 60 of about 659,088 (207)

Persistence of benthiocarb in soil: influence of ultraviolet and sunlight

open access: yesOrbital: The Electronic Journal of Chemistry, 2008
Persistence of benthiocarb in soil as affected by UV and sunlight exposure was studied. Treated soil was placed in petri plate, brought to field capacity moisture and then exposed to UV and sunlight.
Md. Wasim Aktar   +2 more
doaj  

Degradation dynamics and risk assessment of chlorpyriphos in/on cabbage under different culinary processes

open access: yesOrbital: The Electronic Journal of Chemistry, 2008
Chlorpyriphos 20 EC was applied at the rate of 500 g a.i. ha-1 in Cabbage heads and the samples harvested at intervals of 0 (2 hours after application), 1 and 7 days after application.
Md. Wasim Aktar   +3 more
doaj  

Facile Synthesis of the Naturally Cytotoxic Triterpenoid Saponin Patrinia-Glycoside B-II and Its Conformer

open access: yesMolecules, 2013
The first chemical synthesis of the natural triterpenoid saponin Patrinia-glycoside B-II, namely oleanolic acid 3-O-α-L-rhamnopyranosyl-(1→2)-[β-D-gluco-pyranosyl-(1→3)]-α-L-arabinopyranoside, has been accomplished in a linear 11-step sequence 11 with 9.
Li Ren   +6 more
doaj   +1 more source

Unraveling the Differences of the Hydrolytic Activity of Trypanosoma cruzi trans-Sialidase and Trypanosoma rangeli Sialidase: A Quantum Mechanics–Molecular Mechanics Modeling Study [PDF]

open access: yes, 2014
Chagas’ disease, also known as American trypanosomiasis, is a lethal, chronic disease that currently affects more than 10 million people in Central and South America. The trans-sialidase from Trypanosoma cruzi (T. cruzi, TcTS) is a crucial enzyme for the
Bueren Calabuig, Juan A.   +2 more
core   +1 more source

Infrared Techniques Useful in Residue Chemistry

open access: yesJournal of AOAC INTERNATIONAL, 1965
Abstract Although infrared spectrophotometry is suitable for the measurement and identification of pesticides and their metabolic products because of its inherent characterizing properties, only recently have techniques and instrumentation become adequate for the difficult requirements of residue chemistry.
openaire   +1 more source

Modern Approaches to Exact Diagonalization and Selected Configuration Interaction with the Adaptive Sampling CI Method. [PDF]

open access: yes, 2019
Recent advances in selected configuration interaction methods have made them competitive with the most accurate techniques available and, hence, creating an increasingly powerful tool for solving quantum Hamiltonians.
Freeman, C Daniel   +5 more
core   +2 more sources

Human P450 CYP17A1: Control of Substrate Preference by Asparagine 202 [PDF]

open access: yes, 2018
CYP17A1 is a key steroidogenic enzyme known to conduct several distinct chemical transformations on multiple substrates. In its hydroxylase activity, this enzyme adds a hydroxyl group at the 17α position of both pregnenolone and progesterone at ...
Bangcharoenpaurpong O.   +8 more
core   +2 more sources

Efficient adsorptive removal of levofloxacin using sulfonated graphene oxide: Adsorption behavior, kinetics, and thermodynamics

open access: yesHeliyon
Water pollution by antibiotic residues poses a potential threat to environmental and human health. Graphene-based materials are highly stable, recyclable and effective adsorbents for efficiently removing antibiotics from polluted water.
Chironjit Kumar Shaha   +2 more
doaj   +1 more source

Polymers Interfacing with Biology

open access: yesCHIMIA, 2011
The development of various controlled radical polymerization techniques as well as site- and residue specific strategies to modify peptides/proteins with synthetic polymers have made polymer chemistry a powerful tool to address materials ...
Frederik Wurm, Harm-Anton Klok
doaj   +1 more source

Growth, yield and fiber quality characteristics of Bt and non-Bt cotton cultivars in response to boron nutrition

open access: yesJournal of Cotton Research, 2023
Background Boron (B) deficiency is an important factor for poor seed cotton yield and fiber quality. However, it is often missing in the plant nutrition program, particularly in developing countries.
Muhammad MEHRAN   +6 more
doaj   +1 more source

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