108 research outputs found
Table1_Noisy condition and three-point shot performance in skilled basketball players: the limited effect of self-talk.xlsx
In modern basketball, the three-point shot plays an important tactical role. Basketball players often face the distraction from audience and opponents, necessitating psychological skill to maintain their performance. The study examined the effects of self-talk interventions on the three-point shot performance under quiet and noisy conditions. It involved 42 national second-level basketball players and used a 2 (Condition: quiet condition, noisy condition)âĂâ3 (Intervention: control group, motivational self-talk, instructional self-talk) mixed design to investigate the performance of the static and dynamic three-point shots tasks. The results revealed that the static three-point shot score was significantly lower in noisy condition compared to quiet condition (pâ=â0.016), while the main effect of Intervention and the interaction effect of ConditionâĂâIntervention were not significant. Post-hoc analysis indicated that only the control group showed significantly lower scores in the noisy condition (pâ=â0.043). For the dynamic three-point shots performance, there were no significant main effects of Intervention or Condition, nor any significant interaction effect between Condition and Intervention. In conclusion, noise distraction negatively affects the static three-point shots task, and although self-talk interventions can mitigate such negative effects, their effectiveness is limited for dynamic three-point shots task with high physical demands.</p
Synthesis, characterization and evaluation of tinidazole-loaded mPEGâPDLLA (10/90) <i>in situ</i> gel forming system for periodontitis treatment
<p>Traditional <i>in situ</i> gel forming systems are potential applications for parenteral administration but always accompanied with burst release. To overcome this limitation, the tinidazole (TNZ)-loaded <i>in situ</i> gel forming system using a diblock copolymer, monomethoxy poly(ethylene glycol)âblock-poly(d,l-lactide) (mPEGâPDLLA), was designed. The formulation of the mPEGâPDLLA-based TNZ <i>in situ</i> gel forming system contained 5% (w/w) TNZ, 0.4% glycerol, 5âml <i>N</i>-methyl pyrrolidone (NMP) and 35% (w/w) mPEGâPDLLA. The <i>in situ</i> gel forming system showed sustained TNZ release over 192âh with low burst effect (around 7% in the first 8âh) in the <i>in vitro</i> release study. Additionally, <i>in vivo</i> studies were performed on rabbits with ligature-induced periodontitis, and the concentration of TNZ in the gingival crevicular fluid (GCF) as well as the pharmacokinetic parameters was calculated and the pharmacological effect of TNZ-loaded <i>in situ</i> gel forming (mPEGâPDLLA)-based system was found effective. Finally, histological studies revealed that the gel was a safe formulation with low irritation. The desirable drug release kinetics combined with the excellent <i>in vivo</i> characteristics highlight the potential of the gel in the treatment of periodontitis. Therefore, these results confirmed that the TNZ-loaded <i>in situ</i> gel forming mPEGâPDLLA-based system could reduce burst release of TNZ and act as a sustained-release and injectable drug depot for periodontitis treatment.</p
In-Situ Stability Control of Energy-Producing Anaerobic Biological Reactors through Novel Use of Ion Exchange Fibers
Anaerobic biological treatment of
high-strength organic industrial
wastes is preferred over aerobic treatment as it produces a methane-rich
biogas, has much lower energy requirements, and produces significantly
less biosolids. Process stability and reactor failure are of concern,
however, for waste streams that exhibit large variations in organic
loading, which can cause detrimental pH fluctuations, and that have
the potential for accidental input of toxic metals. Here, we demonstrate
for the first time that the use of ion exchange fibers (IXFs) can
provide passive resilience to these failure modes, without requiring
operator oversight or reactive process control via chemical addition.
IXFs have the advantage of rapid kinetics due to their small size,
and they can be readily inserted and withdrawn as woven mats or porous
pillows. This approach is demonstrated here using the weak-acid IXF
FIBAN X-1 and the strong-base FIBAN A-1. FIBAN X-1 passively stabilized
anaerobic reactors by (i) buffering pH fluctuations resulting from
organic overloading due to both an increase in organic concentration
and a decrease in hydraulic residence time and (ii) moderating shock-loads
of copper and nickel. FIBAN X-1 also retained âź95% of its exchange
capacity after one year of operation in anaerobic reactors, demonstrating
its long-term performance. In addition, FIBAN A-1 stabilized anaerobic
reactors to input of chromate. These results demonstrate that IXFs
can be used to passively stabilize anaerobic biological reactors from
upset and failure and that this technology can be used to enhance
energy recovery from high-strength organic waste streams
Pearsonâs Principle Inspired Generalized Strategy for the Fabrication of Metal Hydroxide and Oxide Nanocages
Designing
a general route for rational synthesis of a series or
families of nanomaterials for emerging applications has become more
and more fascinating and vital in the view of nanoscience and nanotechnology.
Herein, we explore a general strategy for fabricating uniform nanocages
of metal hydroxides (MHs) and metal oxides (MOs). A template-assisted
route inspired by Pearsonâs hard and soft acidâbase
(HSAB) principle was employed for synthesizing MH nanocages via meticulous
selection of the coordinating etchant as well as optimization of the
reaction conditions. The concept of âcoordinating etchingâ
is successfully achieved in
this work. This unique route shows potential in designing well-defined
and high-quality MH nanocages with varying components, shell thicknesses,
shapes, and sizes at room temperature. Consequently, porous MO nanocages
can be obtained readily just through appropriate thermal treament
of the respective MH nanocages. The overall strategy present in this
work extends the application of the HSAB principle in nanoscience
and offers a unqiue clue for rational fabrication of hollow (porous)
and/or amorphous structures on the nanoscale, where these nanocages
may present promising potential for various applications
Changes in global efficiency of three groups in three days.
<p>Results are expressed as mean Âą SEM of the whole group (nâ=â6).</p><p>*<i>p</i><0.05,</p><p>**<i>p</i><0.01, ANOVA one-way post hoc NewmanâKeuls test. Control â=â no propofol anesthesia; proâ=â0.5 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h; PROâ=â0.9 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h.</p
Surface Diffusion Barriers and Catalytic Activity Driven by Terminal Groups at Zeolite Catalysts
Defects that commonly exist on the surface of zeolites
pose notable
mass transport constraints and influence the catalytic performance.
The mechanism underlying the surface defects inducing molecular transport
limitations, however, is not fully understood. Herein, we use versatile
spectroscopy, imaging techniques, and multiscale simulations to investigate
the effect of surface defects on the molecular surface transport in
zeolites, intending to establish the terminal structureâmass
transportâperformance relationship. Isolated silanol, which
represents the foremost and eventual chemical defective accessible
site at zeolite termination for guest molecules from the bulk fluid
phase into zeolites or vice versa, is taken as a showcase. We demonstrate
that isolated silanol at H-SAPO-34 zeolite termination not only enhances
the adsorptive interaction between the polar molecules/alkenes and
interface but also narrows the local 8-membered-ring pore at the external
surface. The exterior surface with more isolated silanol could cause
a higher diffusion barrier and hamper the accessibility of intracrystalline
active sites. This work is expected to shed light on the mechanism
underlying the zeolite catalyst upgrading via terminal surface modifications
at zeolites
Surface Diffusion Barriers and Catalytic Activity Driven by Terminal Groups at Zeolite Catalysts
Defects that commonly exist on the surface of zeolites
pose notable
mass transport constraints and influence the catalytic performance.
The mechanism underlying the surface defects inducing molecular transport
limitations, however, is not fully understood. Herein, we use versatile
spectroscopy, imaging techniques, and multiscale simulations to investigate
the effect of surface defects on the molecular surface transport in
zeolites, intending to establish the terminal structureâmass
transportâperformance relationship. Isolated silanol, which
represents the foremost and eventual chemical defective accessible
site at zeolite termination for guest molecules from the bulk fluid
phase into zeolites or vice versa, is taken as a showcase. We demonstrate
that isolated silanol at H-SAPO-34 zeolite termination not only enhances
the adsorptive interaction between the polar molecules/alkenes and
interface but also narrows the local 8-membered-ring pore at the external
surface. The exterior surface with more isolated silanol could cause
a higher diffusion barrier and hamper the accessibility of intracrystalline
active sites. This work is expected to shed light on the mechanism
underlying the zeolite catalyst upgrading via terminal surface modifications
at zeolites
Changes in network density of three groups in three days.
<p>Results are expressed as mean Âą SEM of the whole group (nâ=â6).</p><p>*<i>p</i><0.05,</p><p>**<i>p</i><0.01, ANOVA one-way post hoc NewmanâKeuls test. Control â=â no propofol anesthesia; proâ=â0.5 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h; PROâ=â0.9 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h.</p
Clustering coefficient of LFPs functional connectivity across three groups.
<p>(A) Theta-band LFPs; (B) Gamma-band LFPs. Error bars represent standard error. * <i>p</i><0.05, ** <i>p</i><0.01, ANOVA one-way post hoc NewmanâKeuls test. Control â=â no propofol anesthesia; proâ=â0.5 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h; PROâ=â0.9 mgâ˘kg<sup>â1</sup>â˘min<sup>â1</sup>, 2 h.</p
Rat working memory task training in Y-maze and one example of LFPs.
<p>(A) Y-maze for rat working memory task; (B) one example of ârightâ task, the direction of âchoice runâ is different to âsample runâ; (C) one example of âwrongâtask, the direction of âchoice runâ is same to âsample runâ; (D) one example of 16-channels LFPs and one channel LFPs before preprocessing; (E) one example of 16-channels LFPs and one channel LFPs after preprocessing. âžâ´ represents the tripping time by infrared in Y-maze.</p
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