Zobrazeno 1 - 10
of 11 483
pro vyhledávání: '"uv/vis spectroscopy"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1684-1692 (2024)
A spectroscopic setup for isomerization quantum yield determination is reported. The setup combines fiber-coupled LEDs, a commercially calibrated thermopile detector for measurement of the photon flux, and a fiber-coupled UV–vis spectrometer. By so
Externí odkaz:
https://doaj.org/article/2ba8654124ec4829a31efb6b5d406952
Autor:
Faride Unda, Lisanne de Vries, Steven D. Karlen, Jordan Rainbow, Chengcheng Zhang, Laura E. Bartley, Hoon Kim, John Ralph, Shawn D. Mansfield
Publikováno v:
Biotechnology for Biofuels and Bioproducts, Vol 17, Iss 1, Pp 1-15 (2024)
Abstract Background The phenolic polymer lignin is one of the primary chemical constituents of the plant secondary cell wall. Due to the inherent plasticity of lignin biosynthesis, several phenolic monomers have been shown to be incorporated into the
Externí odkaz:
https://doaj.org/article/c7c0e7512d674e33ab4263cc98f27c29
Autor:
Koki Ikemoto, Hiroyuki Isobe
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1207-1212 (2024)
Cyclo-meta-phenylenes doped with nitrogen atoms at the periphery were designed and synthesized. The syntheses of the macrocyclic structures were achieved with one-pot Suzuki–Miyaura coupling to arrange phenylene rings and pyridinylene rings in an a
Externí odkaz:
https://doaj.org/article/027187eb87c64ef09a9cb750e786d940
Publikováno v:
International Journal of Nanomedicine, Vol Volume 19, Pp 4451-4464 (2024)
Taghrid S Alomar,1 Najla AlMasoud,1 Manal A Awad,2 Reem S AlOmar,3 Nada M Merghani,4 Mohamed El-Zaidy,5 Ajaya Bhattarai6 1Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, 11671, Saudi Arabia; 2King Abd
Externí odkaz:
https://doaj.org/article/ff13ba8bc80b42da96c1cfef7cdc3a58
Publikováno v:
Journal of Analytical Science and Technology, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The correct identification and authentication of medicinal plants material is a crucial task that ensures quality and prevent adulteration. The use of UV–Vis spectroscopy with principal component analysis (PCA) and discriminant analysis (D
Externí odkaz:
https://doaj.org/article/c2713288029d4c6390cfb86fdf3453dd
Publikováno v:
Heritage, Vol 7, Iss 3, Pp 1357-1371 (2024)
Analysis of purple dyestuff from a tin labeled “1 oz. Cudbear, No. 1 N. F. Powdered”, marketed by the American business S. B. Penick & Company, “Manufacturers of fine drugs and chemicals”, confirmed that the material was indeed a lichen dyest
Externí odkaz:
https://doaj.org/article/48648cc1e62940ceab3df889794053cc
Autor:
Lidia Elizabeth Verduzco-Grajeda, Nayeli Verali Solís-Delgadillo, Andrea Guadalupe Romo Castañeda, Monica Ortíz-Martínez, Mariana Alfaro-Gómez
Publikováno v:
Chemical Physics Impact, Vol 9, Iss , Pp 100733- (2024)
In this work, we present the spectroscopic and structural analysis of synthetic melanin incorporated within alginate films. We propose a synthesis methodology for alginate films with different concentrations of melanin. For this, Ca2+-crosslinked alg
Externí odkaz:
https://doaj.org/article/0cebc7ce2cb34fcfb9f69cc3eb01dea8
Autor:
Xu‐Dan Yang, Bo Gong, Wei Chen, Jie‐Jie Chen, Chen Qian, Rui Lu, Yuan Min, Ting Jiang, Liang Li, Han‐Qing Yu
Publikováno v:
Advanced Science, Vol 11, Iss 32, Pp n/a-n/a (2024)
Abstract The development of in situ techniques to quantitatively characterize the heterogeneous reactions is essential for understanding physicochemical processes in aqueous phase. In this work, a new approach coupling in situ UV–vis spectroscopy w
Externí odkaz:
https://doaj.org/article/0f9a89fd7b28406f96c004445bbb835e
Publikováno v:
Results in Optics, Vol 16, Iss , Pp 100703- (2024)
The innovative, affordable assembled visible spectrophotometer employed in this study aims to analyze the absorption and emission of colorful metallic blends of colorful samples solution. It features a tungsten white light bulb source, an ammeter as
Externí odkaz:
https://doaj.org/article/4060b2841f64461da0893b65d2f3ac99
Publikováno v:
Heliyon, Vol 10, Iss 12, Pp e33014- (2024)
This research aims to comprehensively investigate and analyze the UV–visible spectroscopic behavior of the methyl red (MR)-cetyltrimethylammonium bromide (CTAB) system under the influence of sodium polystyrene sulfonate (NaPSS) in aqueous and diffe
Externí odkaz:
https://doaj.org/article/5cb01f39bbaf41e5a9d8ece1605b509f