Results 51 to 60 of about 62,649 (242)

Extracting Information and Enhancing the Quality of Separation Data: A Review on Chemometrics-Assisted Analysis of Volatile, Soluble and Colloidal Samples

Chemosensors, 2023
Instrument automation, technological advancements and improved computational power made separation science an extremely data-rich approach, requiring the use of statistical and data analysis tools that are able to optimize processes and combine multiple ...
Alessandro Zappi, Valentina Marassi, Stefano Giordani, Nicholas Kassouf, Barbara Roda, Andrea Zattoni, Pierluigi Reschiglian, Dora Melucci   +7 more
doaj   +1 more source

Nonnegative approximations of nonnegative tensors [PDF]

, 2009
We study the decomposition of a nonnegative tensor into a minimal sum of outer product of nonnegative vectors and the associated parsimonious naive Bayes probabilistic model.
Comon, Pierre, Lim, Lek-Heng
core   +6 more sources

Data‐driven simulation of crude distillation using Aspen HYSYS and comparative machine learning models

The Canadian Journal of Chemical Engineering, EarlyView.
Integrated Aspen HYSYS–machine learning framework for predicting product yields and quality variables. Abstract Crude oil refining is a complex process requiring precise modelling to optimize yield, quality, and efficiency. This study integrates Aspen HYSYS® simulations with machine learning techniques to develop predictive models for key refinery ...
Aldimiro Paixão Domingos, Heleno Bispo, Thiago Vaz da Costa, Sérgio Mauro da Silva Neiro   +3 more
wiley   +1 more source

Engineering an asymmetric rhodamine dye suitable for developing ratiometric fluorescent probe

Smart Molecules, 2023
Fluorescent probes based on rhodamine skeleton are extensively used in biological imaging. However, the construction of ratiometric fluorescent probes based on the rhodamine skeleton without introducing additional fluorophores is still challenging ...
Feiyu Yang, Peng Lu, Tian‐Bing Ren, Xiao‐Bing Zhang, Lin Yuan   +4 more
doaj   +1 more source

Superphanes: Facile and efficient preparation, functionalization and unique properties

Tetrahedron Chem, 2022
Superphanes, compounds in which the two benzene rings clamped parallel on top of each other by six bridges, have been attracting considerable interest because of their structural beauty and symmetry.
Aimin Li, Yuanchu Liu, Wei Zhou, Yunqi Jiang, Qing He   +4 more
doaj   +1 more source

Metabolomics : a tool for studying plant biology [PDF]

, 2005
In recent years new technologies have allowed gene expression, protein and metabolite profiles in different tissues and developmental stages to be monitored.
Gullberg, Jonas
core  

Statistical process monitoring of a multiphase flow facility [PDF]

, 2015
Industrial needs are evolving fast towards more flexible manufacture schemes. As a consequence, it is often required to adapt the plant production to the demand, which can be volatile depending on the application.
Cao, Yi, Harrison, David, Lao, Liyun, Ruiz Carcel, Cristobal, Samuel, Raphael   +4 more
core   +1 more source

Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3−$$ {\mathrm{NO}}_3^{-} $$ coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous ...
Jiani Liu, Peiyue Jin, Yujing Liu, Tian Cheng, Jianlong Wei, Jingjing Liu, Yiqiong Zhang, Shuangyin Wang   +7 more
wiley   +1 more source

Effect of Fruit Maturation Stage on the Chemical Composition and Antioxidant and Cytotoxic Activities of Piper nigrum Essential Oil

Flavour and Fragrance Journal, EarlyView.
The essential oils of Piper nigrum show marked chemical and biological variation across fruit maturation stages. Ripe fruits yield oils with the strongest antioxidant and cytotoxic activities, demonstrating that maturation directly modulates volatile composition and enhances the bioactive potential of this aromatic species.
Marcio Marcelo da Siva Pessoa, Jorddy Neves Cruz, Ingryd Nayara de Farias Ramos, André Salim Khayat, Eloisa Helena de Aguiar Andrade, José de Arimatéia Rodrigues do Rego, Davi do Socorro Barros Brasil   +6 more
wiley   +1 more source

A comprehensive review on the applications of chemometrics in analytical chemistry

Journal of Applied Pharmaceutical Research
Background: This article presents a review of the various applications of chemometrics in analytical chemistry. Chemometrics is essential to analytical chemistry because it provides sophisticated methods for extracting, analyzing, and interpreting ...
Projesh Saha, Bibhas Pandit, Soma Pramanik, Bhupendra Shrestha   +3 more
doaj   +1 more source