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#35044785   2022/01/19 To Up

Bakmaranhawuy - the broken connection. Perspectives on asking and answering questions with Yolŋu patients in healthcare contexts.

Questioning is a key method in general information-seeking behaviour and teaching used by the dominant culture in Australia. Within an Australian health context the fundamental diagnostic tool used by medical staff is the biomedical interview or history taking, which is based on a battery of direct questions. Similarly, many health professionals rely on patient questions to prompt the sharing of information, or to make them aware of gaps in communication. This is problematic for many First Nations peoples, including Yolηu (First Nations people of North-East Arnhem Land), who are culturally less inclined to use direct questioning as it is deemed impolite within their cultural context.
Anna Jo Walmsley, Dikul R Baker, Anne Lowell

2065 related Products with: Bakmaranhawuy - the broken connection. Perspectives on asking and answering questions with Yolŋu patients in healthcare contexts.

100ug2000 Units5 mg100ug10000 Units100ug20000 Units1000 Units

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#35043809   2022/01/19 To Up

Designing high performance polymer nanocomposites by incorporating robustness-controlled polymeric nanoparticles: insights from molecular dynamics.

Introducing polymeric nanoparticles into polymer matrices is an interesting topic, and the robustness of the polymeric nanoparticles is crucial for the properties of the polymer nanocomposites (PNCs). In this study, by incorporating star-shaped polymeric nanoparticles (SSPNs) into the polymer, the effect of the sphericity () and arm length () of the SSPNs on the mechanical properties of PNCs is systematically investigated, using a coarse-grained molecular dynamics simulation. In addition, the linear and spherical nanoparticles (NPs) are compared with SSPNs by fixing the approximate diameter and mass fraction of the NPs. The radial distribution function, the second virial coefficient, mean-squared displacement, bond autocorrelation function, and primitive path analysis are employed to systematically characterize the structure and dynamics of these new PNCs. It is found that the dispersion of the NPs is enhanced with the increase of , and the entanglement density reaches maximum, which both contribute to the greatest mechanical reinforcing effect. More significantly, it is found that the classical Payne effect, namely the storage as a function of the strain amplitude, decreases remarkably, and with a much smaller loss factor for these SSPN filled polymer nanocomposites, compared to conventional PNCs filled with rigid NPs. Furthermore, the change of the arm length of the SSPNs is found to exhibit the same effect on the mechanical and viscoelastic properties, as the variation of the number of the arms. In general, this work shows that these new SSPN filled polymer nanocomposites can exceed conventional PNCs, by manipulating the robustness of the SSPNs using, for example, the number and length of the arms. This research may provide guidelines for the investigation of the structure-property relationships of the topological structure of polymeric nanoparticles.
Guanyi Hou, Sai Li, Jun Liu, Yunxuan Weng, Liqun Zhang

2301 related Products with: Designing high performance polymer nanocomposites by incorporating robustness-controlled polymeric nanoparticles: insights from molecular dynamics.

6 ml Ready-to-use 2 ml Ready-to-use 2 ml Ready-to-use 25 ml Ready-to-use 6 ml Ready-to-use 1mg 25 ml Ready-to-use 100ug Lyophilized100 assays

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#35043066   2022/01/14 To Up

Impact of Mindfulness Training on Spanish Police Officers' Mental and Emotional Health: a Non-Randomized Pilot Study.

The purpose of this exploratory non-randomized controlled study was to determine the acceptance and effectiveness of an 8-week mindfulness-based intervention (MBI) co-designed by a police officer.
Jaime Navarrete, Miguel Ángel García-Salvador, Ausiàs Cebolla, Rosa Baños

1871 related Products with: Impact of Mindfulness Training on Spanish Police Officers' Mental and Emotional Health: a Non-Randomized Pilot Study.

100ug18 kgs25 mg 5 G1 mg50 ug 5 G1 g0.2 mg96 wells (1 kit)100ug100ul

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#35042339   2022/01/18 To Up

Heteroleptic Rare-Earth Tris(metallocenes) Containing a Dibenzocyclooctatetraene Dianion.

Isolable heteroleptic tris(metallocenes) containing five-membered and larger rings remain extremely scarce. The utilization of tripositive rare-earth-metal ions with ionic radii >1 Å allowed access to unprecedented and sterically congested dibenzocyclooctatetraenyl (dbCOT) metallocenes, [K(crypt-222)][CpRE(η-dbCOT)] (RE = Y (), Dy (); Cp = tetramethylcyclopentadienyl), through a salt metathesis reaction involving CpRE(BPh) and the potassium salt of the dbCOT dianion. The solid-state structures were investigated by single-crystal X-ray diffraction, magnetometry, and IR spectroscopy and provided evidence for the first crystallographically characterized (dbCOT) anion in a complex containing d- or f-block metals. Remarkably, the (Cp) ligands force a distortion from planarity within the (dbCOT) moiety, engendering a rare η-bonding motif, as opposed to the classical η conformation observed in complexes bearing a (COT) ion. The η coordination mode was proven crystallographically between 100 and 298 K and computationally (DFT and NBO). Furthermore, nucleus independent chemical shift (NICS) calculations uncovered significant ring current within the dbCOT ligand. The solution-state properties of and were analyzed via cyclic voltammetry, NMR, and UV-vis spectroscopy. Cyclic voltammograms of and exhibit a quasi-reversible feature indicating the accessibility of complexes with dbCOT in two oxidation states (dbCOT). Importantly, the dysprosium congener, , is a zero-field single-molecule magnet (SMM).
Elizabeth R Pugliese, Florian Benner, Ernesto Castellanos, Francis Delano, Selvan Demir

2902 related Products with: Heteroleptic Rare-Earth Tris(metallocenes) Containing a Dibenzocyclooctatetraene Dianion.

100 G 125 ml 500 ml 5KG 100 G 500 G 125 ml 1KG2.5 umoles10 mg 20 L 1 umole

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#35042208   2022/01/18 To Up

Nanoparticle radiosensitization: from extended local effect modeling to a survival modification framework of compound Poisson additive killing and its carbon dots validation.

To construct an analytical model instead of local effect modeling for the prediction of the biological effectiveness of nanoparticle radiosensitization.
Hailun Pan, Xiaowa Wang, Aihui Feng, Qinqin Cheng, Xue Chen, XiaoDong He, Xinglan Qin, Xiaolong Sha, Shen Fu, Cuiping Chi, Xufei Wang

1572 related Products with: Nanoparticle radiosensitization: from extended local effect modeling to a survival modification framework of compound Poisson additive killing and its carbon dots validation.

1 module1 mg1 module2.5 mg10 mg1 kit(96 Wells)

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#35041973   2022/01/15 To Up

Evaluation of bacterial agents isolated from endotracheal aspirate cultures of Covid-19 general intensive care patients and their antibiotic resistance profiles compared to pre-pandemic conditions.

Early reports have shown that critically ill patients infected with SARS-CoV-2 have a high prevalence of nosocomial pneumonia, particularly ventilator-associated pneumonia (VAP).
Yasemin Genç Bahçe, Ömer Acer, Osman Özüdoğru

2542 related Products with: Evaluation of bacterial agents isolated from endotracheal aspirate cultures of Covid-19 general intensive care patients and their antibiotic resistance profiles compared to pre-pandemic conditions.

25 G 5 G 25 G1.00 flask100ug50 ug1 g480/kit

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#35037755   2022/01/17 To Up

Insights into the Metal-CO Bond in OM(η-CO) (M = Cr, Mo, W, Nd, and U) Complexes.

Investigations on the structures and bonding properties of metal carbonyl compounds provide fundamental understandings on the origin of small-molecule activations. Herein, the geometry and bonding trends of a series of isovalent metal oxocarbonyl complexes OM(η-CO) (M = Cr, Mo, W, Nd, and U) were studied by combined matrix-isolation infrared spectroscopy and advanced quantum chemical calculations. The title complexes present red shift of C-O stretching bands in the range from 122 to 244 cm, indicating the difference of CO activation ability for the series of isovalent metal dioxides. Density functional theory calculations predict T-shaped structures with a symmetry for all the title molecules. ONd(η-CO) bears little resemblance to the other complexes in bonding characters because of the weak interactions between the NdO and CO moiety. For the other complexes, natural localized molecular orbital analysis reveals a gradual increase of covalent character in M-CO bonds along the metal series Cr → Mo → W→ U. Energy decomposition analysis with natural orbitals for chemical valence calculations demonstrates that the M-CO bonding patterns conform to the conventional Dewar-Chatt-Duncanson motif. The contributions from orbital interactions in total attractions increase from Cr (41.7%) to U (52.7%). The breakdown of the orbital term into pairwise interactions shows that contributions of the M ← CO σ donation decrease from Cr (59.2%) to U (28.4%), while the M → CO π* backdonation increases significantly from Cr (23.8%) to U (67.3%). The more effective overlap and the better energy matching of U 5f and U 6d valence orbitals with CO π* orbitals result in much stronger U → CO π backdonation than the other metal elements.
Jianwei Qin, Fang Li, Ruizhi Qiu, Liang Chen, Lizhu Luo, Min Wang, Zhen Pu, Maobing Shuai

2370 related Products with: Insights into the Metal-CO Bond in OM(η-CO) (M = Cr, Mo, W, Nd, and U) Complexes.

100ug Lyophilized100 μg

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#35037667   2022/01/17 To Up

The rheology and foamability of crystal-melt suspensions composed of triacylglycerols.

The rheology of triacylglycerol (TAG) crystal-melt suspensions (CMSs) consisting of anhydrous milk fat (AMF), cocoa butter (CB), and palm kernel oil (PKO) as function of crystallization shear rate and crystal volume fraction is investigated by in-line ultrasound velocity profiling - pressure difference (UVP-PD) rheometry. Measurements up to = 8.8% are presented. Below the percolation threshold , no yield stress is observed and the viscosity scales linearly with . Above , a non-linear dependency of both and as function of is apparent. For AMF and CB, the increase in leads to a decrease in and as function of , whereas for PKO based CMSs the opposite is the case. Scanning electron microscopy (SEM) and polarized light microscopy (PLM) relate these rheological findings to the microstructure of the investigated CMSs by taking the effective aspect ratio and the concept of the effective crystal volume fraction effSFC into account. Foam formation by dynamically enhanced membrane foaming (DEMF) is performed directly after crystallization and reveals that depending on the CMS rheology and crystallite-, crystallite cluster- and crystal floc microstructure, a wide range of gas volume fractions between 0.05-0.6 are achievable.
Kim Mishra, Fabian Kämpf, Silas Ehrengruber, Julia Merkel, Nico Kummer, Robin Pauer, Peter Fischer, Erich J Windhab

1533 related Products with: The rheology and foamability of crystal-melt suspensions composed of triacylglycerols.

5 G100ugmin 2 cartons 500 ml 10 mg100.00 ul 25 G1000 tests100μg500 mg200 units

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#35036866   2021/12/20 To Up

Deep learning model of somatic hypermutation reveals importance of sequence context beyond hotspot targeting.

B cells undergo somatic hypermutation (SHM) of the Immunoglobulin (Ig) variable region to generate high-affinity antibodies. SHM relies on the activity of activation-induced deaminase (AID), which mutates C>U preferentially targeting WRC (W=A/T, R=A/G) hotspots. Downstream mutations at WA Polymerase η hotspots contribute further mutations. Computational models of SHM can describe the probability of mutations essential for vaccine responses. Previous studies using short subsequences (-mers) failed to explain divergent mutability for the same -mer. We developed the DeepSHM (Deep learning on SHM) model using -mers of size 5-21, improving accuracy over previous models. Interpretation of DeepSHM identified an extended WWRCT motif with particularly high mutability. Increased mutability was further associated with lower surrounding G content. Our model also discovered a conserved AGYCTGGGGG (Y=C/T) motif within FW1 of IGHV3 family genes with unusually high T>G substitution rates. Thus, a wider sequence context increases predictive power and identifies features that drive mutational targeting.
Catherine Tang, Artem Krantsevich, Thomas MacCarthy

1635 related Products with: Deep learning model of somatic hypermutation reveals importance of sequence context beyond hotspot targeting.

5 G50ug1 kit 50 UG1 kit100 ug

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#35034209   2022/01/15 To Up

Comparison of green bio-based cerium/alginate vs. copper/alginate beads: a study of vibrational and thermal properties using experimental and theoretical methods.

Herein, bio-based alginates (Alg) containing metallic beads (Ce and Cu) were synthesized via an alginate cross-linking method, and their properties were studied using experimental techniques combined with theoretical simulations. Materials were characterized through Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscope (SEM) images, to determine the cross-linking structural features, thermal stability, and surface morphology of alginates. Besides, density functional theory (DFT) methods were employed to calculate global reactivity parameters such as HOMO-LUMO gap energies (ΔE), electronegativity (χ), hardness (η), and electrophilic and nucleophilic indicators, using both gas and aqueous media for the study of the complexation process. Among other features, characterization of the thermal properties showed that [email protected] and [email protected] alginate beads behave differently as a function of the temperature. This behavior was also predicted by the conformation energy differences between [email protected] and [email protected], which were found out theoretically and explained with the combined study of the vibrational modes between the carboxylate group with either Ce or Cu. Overall, the reactivity of the [email protected] alginate bead was higher than that of the [email protected] counterpart, results could be used as a cornerstone to employed the materials here studied in a wide range of applications.
Mohammed Elhoudi, Rachid Oukhrib, Christian A Celaya, Daniel G Araiza, Youness Abdellaoui, Issam Barra, Younes Brahmi, Hassan Bourzi, Miguel Reina, Abdallah Albourine, Hicham Abou Oualid

1048 related Products with: Comparison of green bio-based cerium/alginate vs. copper/alginate beads: a study of vibrational and thermal properties using experimental and theoretical methods.

50 ug 25 mg10 mg0.1 mg100ul500 MG5mg25 mg96T100ug50 mg10 mg

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