Results 51 to 60 of about 427,118 (299)

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

open access: yesAdvanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao   +6 more
wiley   +1 more source

Optimization of Fulvic Acids Production from Oil Palm Empty Fruit Bunches Using Microwave Extractor

open access: yesMenara Perkebunan
Fulvic acid (FA) derives from a non-renewable source, Shilajit, known as highly commercial values for its benefit for human health. Fulvic acid can also be extracted from materials such as coal, lignite, and peat.
Firda Dimawarnita   +8 more
doaj   +1 more source

Low-temperature plasma-modified zeolite (LTPMZ) vs. natural Bulgarian zeolite (NBZ) – Comparative physicochemical, UV/VIS and FTIR studies

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2016
The aim of the present study was to investigate and compare the physicochemical, morphological properties and sorption potential of natural Bulgarian zeolite (NBZ) and low-temperature plasma modified zeolite (LTPMZ).
Zvezdelina Yaneva   +2 more
doaj   +1 more source

Discrimination of Biodiesel-Diesel of B7 and B10 by Infrared Spectroscopy with Dendogram

open access: yesIndonesian Journal of Chemistry, 2023
Spectroscopists face an ongoing challenge in identifying fuel spectra due to a wide range of fuel formulations and the increasing abuse of biodiesel-diesel blends. In Malaysia, a new type of biodiesel-diesel blend known as B7 and B10 has been introduced,
Mohd Rashidi Abdull Manap   +7 more
doaj   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

open access: yesAdvanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah   +7 more
wiley   +1 more source

Rapid synthesis of Silver Nanoparticles with Rheum ribes L Fruit Peels: Anticancer and Antimicrobial Effects with Biocompatible Structures

open access: yesJournal of Agricultural Sciences
Silver nanoparticles (AgNPs) are substances with a wide range of uses. Utilizing extracts obtained from the peels of Rheum ribes L. (Rr) fruit growing in Erzurum region, silver nanoparticles were rapidly created in this study with a quick, easy, and ...
Duygu Neval Sayın İpek   +2 more
doaj   +1 more source

PENGARUH TOREFAKSI TERHADAP SIFAT KIMIA PELET TANDAN KOSONG KELAPA SAWIT

open access: yesJurnal Teknik Pertanian Lampung, 2020
Limbah padat perkebunan sawit yang relatif mudah dijumpai ialah tandan kosong kelapa sawit (TKKS). Biomassa TKKS dikonversikan menjadi pelet untuk mendapatkan ukuran yang seragam, kemudian ditorefaksi untuk digunakan sebagai bioenergi sehingga ...
Irma Thya Rani   +5 more
doaj   +1 more source

ИЗУЧЕНИЕ ЛАКОВОГО ИЗДЕЛИЯ ИЗ РАСКОПАННЫХ ХУННУСКИХ КУРГАНОВ В ДОЛИНЕ ТАМИРА, АРХАНГАЙ (Монголия)

open access: yesТеория и практика археологических исследований, 2019
Империя хунну/сюнну (конец III в. до н.э. - I в. н.э.) контролировала центрально-азиатские регионы Шелкового пути; экономические и культурные отношения с империей Хань подтверждается наличием китайских лакированных изделий в археологических памятниках ...
С. Саран   +4 more
doaj   +1 more source

FTIR-based Fingerprinting and Chemometrics for Rapid Investigation of Antioxidant Activity from Syzygium polyanthum Extracts

open access: yesIndonesian Journal of Chemistry, 2020
Syzygium polyanthum, known as salam in Indonesia, which is rich in phenolics compounds with high antioxidant activity. In this study, we performed the determination of total phenolics and characterization of the antioxidant activity of S.
Eti Rohaeti   +2 more
doaj   +1 more source

Synthesis and Investigation of Thermal and Dynamic Mechanical Properties of Urethane-Containing Epoxy Resins

open access: yesJournal of the Turkish Chemical Society Section B: Chemical Engineering, 2023
This study aims to improve the thermal and mechanical properties of epoxy-based materials. For this purpose, the structure of epoxy resins was changed by chemical modification and epoxy resin containing urethane was synthesized. The synthesized resin was
Orçun YÜKSEL   +3 more
doaj   +1 more source

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