Objectives The aim of this study was to assess the clinical severity COVID-19 pneumonia using qualitative and/or quantitative chest computed tomography (CT) indicators and identify CT characteristics critical cases. Materials Methods Fifty-one patients with including ordinary cases (group A, n = 12), severe B, 15), C, 24) were retrospectively enrolled. from recorded compared Fisher exact test, one-way analysis variance, Kruskal-Wallis H receiver operating characteristic analysis. Results...

An efficient protocol for the copper-catalyzed preparation of aryl dithiocarbamates from iodides and inexpensive, environmentally benign tetraalkylthiuram disulfides was developed. The features mild reaction conditions, high yields, broad substrate scope render this new approach synthetically attractive potentially biologically active compounds.

In this study, a novel high efficiency vapor generation strategy was proposed on the basis of solution anode glow discharge for determination Cd and Zn by atomic fluorescence spectrometry. approach, microplasma acted as gaseous cathode to initiate plasma electrochemical Zn. Cadmium/zinc ions could be converted into molecular species efficiently at plasma–liquid interface from supporting electrolyte (HCl, pH = 3.2). It found that overall (PEVG) system much higher than conventional hydride...

In this study, a highly sensitive liquid electrode discharge atomic emission source was developed for the determination of Cd and Zn in aqueous solutions.

In the present study, a novel and sensitive liquid spray dielectric barrier discharge induced plasma-chemical vapor generation technique (LSDBD-CVG) is developed for determination of lead concentration by inductively coupled plasma mass spectrometry (ICPMS). The dissolved Pb2+ readily converted to volatile species LSDBD chemical processes in presence 5% (v/v) formic acid supporting electrolyte (HCl, 0.01 mol L-1). this approach, sample solution aerosol simultaneously mixed with DBD generated...

Sensitive and high-throughput analysis of trace elements in volume-limited biological samples is highly desirable for clinical research health risk assessments. However, the conventional pneumatic nebulization (PN) sample introduction usually inefficient not well-suited this requirement. Herein, a novel high-efficiency (nearly 100% efficiency) low-sample-consumption device was developed successfully coupled with inductively plasma quadrupole mass spectrometry (ICP-QMS). It consists...

Abstract ActiGraphGT9X was applied to collect the energy consumption of table tennis and establish multiple regression equations suitable for prediction in tennis, so as enrich ActiGraph measurement system. Using K4b2 value calibration, accelerometers were worn on handle racket, outside wrist racket holder, iliopsoas muscle at waist, front side center thigh, ankle (the same limb that holder), used synchronously monitor in-situ forehand backhand strokes, sideways movement forward alternate...

A highly efficient liquid spray dielectric barrier discharge (LSDBD) plasma-induced vapor generation technique is developed for the simultaneous determination of selenium, silver, antimony, lead, and bismuth in microsamples (20 μL) by inductively coupled plasma mass spectrometry (ICP-MS). It demonstrated that dissolved Se, Ag, Sb, Pb, Bi ions solution samples are readily simultaneously converted to volatile species efficiently LSDBD chemical processes under similar conditions. eliminates use...

A novel method has been developed for the simultaneous online determination of isotopic compositions different antimony (Sb) species in a single analytical run using high-performance liquid chromatography (HPLC) coupled with multicollector inductively plasma mass spectrometry (MC-ICPMS), hydride generation (HG) serving as interface. Various parameters affecting precision Sb isotope analysis including HG conditions, transient signal processing methods and peak integration windows, were...

Antimony (Sb) isotopes have emerged as a powerful tool for tracing Sb sources and understanding their geochemical behavior in different systems. However, accurate precise determination of isotopic compositions (δ123Sb) natural samples remains challenge, especially low-concentration with complex matrices. In this study, we introduce novel two-step purification method high-precision isotope analysis. the first step, hydride generation (HG) is employed to effectively isolate from major...

A novel simple electrothermal desolvation-enhanced dielectric barrier discharge plasma-induced vapor generation (ETD-DBD-PIVG) method has been developed for sensitive Sb determination by atomic fluorescence spectrometry (AFS). In our proposed ETD-DBD-PIVG, 20 μL sample solution was dried first; then, the resulting residue directly converted into molecular volatile species efficiently through interactions with hydrogen-doped DBD plasma; and finally, it transported to AFS detection. It found...

A DIPEA–NHPI ester–inorganic carbonate catalytic EDA complex is reported as an efficient and sustainable radical generation platform for developing photocatalytic reactions.

In this work, a new method based on hydrogen-doped solution anode glow discharge optical emission spectrometry (SAGD-OES) was developed for the direct detection of trace As in water samples.

Our recent study indicates that microsomal glucuronidation rates are not predictive of the cellular glucuronide excretion and whole cell systems needed to accurately determine metabolic rates. This aims contribution UGT isoforms responsible for metabolism flavonoids in intact Caco-2 cells lysates using siRNA. The results showed UGT1A6 activities (as measured by p-nitrophenol glucuronidation) expression were typically decreased 60–80% siRNA treatment. Using siRNA-mediated silencing, we also...

A copper-catalyzed and air-mediated mild cross-dehydrogenative coupling of aryl thioureas dialkyl H-phosphonates to produce thiophosphonates has been reported. Without addition base or acid, air as an oxidant, the phosphorylation occurred smoothly give target products in moderate excellent yields at room temperature. The protocol allows direct formation a sulfur–phosphorus bond, tolerates series functional groups, shows potential synthetic value for synthesis diversity thiophosphonates.

The effect of the DS ratio is evaluated and a correction approach proposed to improve accuracy robustness Cd isotope analysis.

Regular nanogels have been demonstrated their inefficiency for subterranean oil recovery due to intrinsic drawbacks of fast swelling within minutes, thermal instability, and salinity vulnerability. Prior deployment delayed mainly depended on the reservoirs at a relatively higher temperature. To address issues encountered during engineering deployment, hereinwe devised an integrative approach in situ form robust by introducing radically active monomers with thermally sensitive moieties. The...

An accurate, rapid but cheap, and portable method for monitoring of serum lithium (Li) is highly desirable mental patients who take Li medicine treatment. Conventional techniques are usually bulky, costly, cannot provide on-site real-time measurements. Herein, a miniaturized, reliable, cost-effective, optical emission sensitive determination was developed based on combination miniaturized ultrasonic nebulization (MUN) low-power (≈22 W) atmospheric-pressure air-sustained discharge (APAD)...