Results 11 to 20 of about 528,498 (289)

Adsorption Characteristics of Fumaric Acid onto Weakly Basic Hypercrosslinked Polystyrene Ion-Exchangers

open access: yesAdsorption Science & Technology, 2006
A new weakly basic ion-exchanger (called XC-11), with a hypercrosslinked macroporous polystyrene matrix and a high specific surface area, was synthesized.
Chao Xu   +5 more
doaj   +1 more source

The Role of Organic Peroxides in the Induction of Mutations [PDF]

open access: yes, 1949
The discovery by Wyss, Stone, and Clark' that bacteria grown on a substrate recently exposed to ultra-violet light are subject to high mutation rates shows clearly that some meta-stable chemical substance, probably of no great complexity, is an ...
Cleland, George H.   +2 more
core   +1 more source

Evaluation of Organic Matter Contribution Using Absorbance and Chromatographic Parameters in Lake Paldang, Republic of Korea

open access: yesAgronomy, 2023
Organic matter in lakes is categorized into allochthonous organic matter, such as leaves and sewage effluent, and autochthonous organic matter, generated by microorganisms within the water system.
Yeon Jung Cho   +4 more
doaj   +1 more source

PENGARUH AIR LINDI PADA TERHADAP pH DAN ZAT ORGANIK PADA AIR TANAH DI TEMPAT PENAMPUNGAN SEMENTARA KELURAHAN PAHANDUT KOTA PALANGKARAYA (Effect of Leachate to pH and Organic Substances of Ground Water in The Waste Transfer Station in Kelurahan Pahandut Kota Palangka Raya)

open access: yesJurnal Manusia dan Lingkungan, 2018
Abstrak Tumpukan sampah di Tempat Penampungan Sementara (TPS) maupun Tempat Pemrosesan Akhir (TPA) yang menghasilkan air lindi perlu dilakukan pemantauan untuk mengetahui air lindi sebelum dibuang guna mencegah terjadinya pencemaran air tanah. Penelitian
Nani Apriyani, Rudy Yoga Lesmana
doaj   +1 more source

Development and Validation of Conditions for the Determination of Residual Organic Solvents – Acetic Acid in the Silver Salt Substance 4-[4-(atsetilaminosul'fonil)fenil]-6-(4-bromfenil)-5-(2-nitrofenil)-3,5-digidropirrolo[3,4-с]pirazol-3-ona

open access: yesРазработка и регистрация лекарственных средств, 2022
Introduction. For new synthesized pharmacologically active compounds, already at the stage of standardization, it is necessary to develop methods for determining their quality indicators, normalized by a pharmacopoeial article for pharmaceutical ...
E. N. Lyust   +2 more
doaj   +1 more source

Sex differences in the effect of the FKBP5 inhibitor SAFit2 on anxiety and stress-induced reinstatement following cocaine self-administration

open access: yesNeurobiology of Stress, 2020
Cocaine use and withdrawal prompt stress system responses. Stress and the negative affective state produced by cocaine withdrawal are major triggers for relapse.
Krista L. Connelly   +5 more
doaj   +1 more source

Evaluation of the effectiveness of the action of organic substances on agricultural crops [PDF]

open access: yesBIO Web of Conferences, 2023
The article presents the results of laboratory model and vegetation experiments to study the biological responsiveness of agricultural crops to new synthesized organic compound (growth regulator).
Akent’eva Tatiana   +3 more
doaj   +1 more source

Hygienic assessment of drinking water pollution with organic substances

open access: yesOne Health & Risk Management, 2022
Introduction. The safety of drinking water is an actual issue that bothers all of those who advocate for access to qualitative drinking water. Civil society is particularly alarmed, since, despite every effort made in order to reduce inequalities in ...
Elena CIOBANU
doaj  

Literature Survey and Further Studies on the 3-Alkylation of N-Unprotected 3-Monosubstituted Oxindoles. Practical Synthesis of N-Unprotected 3,3-Disubstituted Oxindoles and Subsequent Transformations on the Aromatic Ring

open access: yesMolecules, 2016
The paper provides a comprehensive review of the base-catalysed C3-alkylation of N-unprotected-3-monosubstituted oxindoles. Based on a few, non-systematic studies described in the literature using butyllithium as the deprotonating agent, an optimized ...
Eszter Kókai, Gyula Simig, Balázs Volk
doaj   +1 more source

Building solids inside nano-space: from confined amorphous through confined solvate to confined ‘metastable’ polymorph [PDF]

open access: yes, 2015
The nanocrystallisation of complex molecules inside mesoporous hosts and control over the resulting structure is a significant challenge. To date the largest organic molecule crystallised inside the nano-pores is a known pharmaceutical intermediate – ROY
Aceves-Hernandez   +69 more
core   +1 more source

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