Results 51 to 60 of about 93,276 (264)

Introduction to the Stir Bar Sorptive Extraction Method and its Applications in Occupational Toxicology [PDF]

تحقیقات نظام سلامت
Sample preparation is a crucial step in chemical analysis. Stir Bar Sorptive Extraction (SBSE) is one of the sample preparation methods employed in this field.
Sara Karimi-Zeverdegani, Sharareh Azadian, Majid Harirsaz   +2 more
doaj  

Adaptation of the methodology for sequential five-step fractionation of elements from bottom sediments of lake Imandra [PDF]

BIO Web of Conferences
A series of experiments was carried out to adapt the technique of five-stage sequential fractionation of elements from soils, silts and bottom sediments (on the example of bottom sediments of Lake Imandra).
Velieva Edae, Makarova Anna, Kharitonov Alexander   +2 more
doaj   +1 more source

Rab14 regulates the transport of human papillomavirus to the trans‐Golgi network for infectious cell entry

FEBS Letters, EarlyView.
This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley   +1 more source

Pasture Recovery Period Affects Humic Substances and Oxidations of Organic Matter in Eastern Amazon

Agronomy
Land management practices that overlook soil limitations and potential have led to varying degrees of degradation. This study evaluates the carbon content in chemical and oxidisable soil fractions across different pasture recovery periods, comparing them
Carlos Augusto Rocha de Moraes Rego, Juan López de Herrera, Paulo Sérgio Rabello de Oliveira, Luciano Cavalcante Muniz, Jean Sérgio Rosset, Eloisa Mattei, Lucas da Silveira, Marinez Carpiski Sampaio, Marcos Gervasio Pereira, Karolline Rosa Cutrim Silva, Ismênia Ribeiro de Oliveira   +10 more
doaj   +1 more source

Extraction Behaviors of Lignin and Hemicellulose-Derived Sugars During Organosolv Fractionation of Agricultural Residues Using a Bench-Scale Ball Milling Reactor

Energies, 2020
Ethanol organosolv fractionation combined with ball milling was conducted on three major agricultural residues: Rice husk (RH), rice straw (RS), and barley straw (BS).
Tae Hoon Kim, Hyun Kwak, Tae Hyun Kim, Kyeong Keun Oh   +3 more
doaj   +1 more source

Evaluation of the Chemical Exergy of Fuels and Petroleum Fractions

Journal of Thermal Analysis and Calorimetry, 2000
A correlation formula to estimate chemical exergies of oil fractions and fuel mixtures from enthalpy of combustion and atomic composition is developed. Heat capacity ofa mixture of 10 hydrocarbons was measured in the range 5–290 K. It was shown that contribution of entropy of mixing to exergy of typical oil fractions is about –0.11% in the ...
Govin, O.V., Diky, V.V., Kabo, G.J., Blokhin, A.V.   +3 more
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

FEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar, Xinqi Yan, Lucas F. Jansen Klomp, Stefano Schivo, Janine N. Post   +4 more
wiley   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source