Atomic Design of Copper Active Sites in Pristine Metal-Organic Coordination Compounds for Electrocatalytic Carbon Dioxide Reduction.

Electrocatalytic carbon dioxide reduction reaction (CORR) has emerged as a promising and sustainable approach to cut carbon emissions by converting greenhouse gas CO to value-added chemicals and fuels. Metal-organic coordination compounds, especially the copper (Cu)-based coordination compounds, which feature well-defined crystalline structures and designable metal active sites, have attracted much research attention in electrocatalytic CORR. Herein, the recent advances of electrochemical CORR on pristine Cu-based coordination compounds with different types of Cu active sites are reviewed.

Saponin-Induced Shifts in the Rumen Microbiome and Metabolome of Young Cattle.

The aim of this study was to explore the effects of saponins on the rumen microbiota and the ruminal metabolome. Alfalfa hay (AH) and soybean hulls (SH) were used as fiber sources for the control diets. The AH and SH diets were supplemented with tea saponins resulting in two additional diets named AHS and SHS, respectively.

Constructing Shadow Tests in Variable-Length Adaptive Testing.

Imposing content constraints is very important in most operational computerized adaptive testing (CAT) programs in educational measurement. Shadow test approach to CAT (Shadow CAT) offers an elegant solution to imposing statistical and nonstatistical constraints by projecting future consequences of item selection. The original form of Shadow CAT presumes fixed test lengths.

Fabricating highly catalytically active block copolymer/metal nanoparticle microstructures at the liquid/liquid interface.

Hypothesis: Our previous studies have shown that the metal nanoparticle/polymer composite structures fabricated at the liquid/liquid interface have good reusability but lower catalytic activity for heterogeneous reactions in aqueous solutions. This should be attributed to the poor water wettability and more compact structure of the polymer matrices. Therefore, it should be possible to improve the catalytic activity through designing and fabricating a porous composite structure with good water wettability.

Continuous Online Item Calibration: Parameter Recovery and Item Utilization.

Parameter recovery and item utilization were investigated for different designs for online test item calibration. The design was adaptive in a double sense: it assumed both adaptive testing of examinees from an operational pool of previously calibrated items and adaptive assignment of field-test items to the examinees. Four criteria of optimality for the assignment of the field-test items were used, each of them based on the information in the posterior distributions of the examinee's ability parameter during adaptive testing as well as the sequentially updated posterior distributions of the field-test item parameters.

A simplified version of the maximum information per time unit method in computerized adaptive testing.

In this article, we propose a simplified version of the maximum information per time unit method (MIT; Fan, Wang, Chang, & Douglas, Journal of Educational and Behavioral Statistics 37: 655-670, 2012), or MIT-S, for computerized adaptive testing. Unlike the original MIT method, the proposed MIT-S method does not require fitting a response time model to the individual-level response time data. It is also computationally efficient.

[The analyse and nursing of the early complications after non-penetration trabecullar surgery combined with implant].

Purpose: To improve the prevention and nursing of complications after non-penetration trabecullar surgery (NPTS) combined with the implant.

Methods: 25 patients (35 eyes) were observed and nursed after they underwent NPTS combined with reticulated hyaluronic acid implant.

Results: In 35 eyes, the flat anterior chamber I occurred in 3 eyes, the flat anterior chamber 11 occurred in 2 eyes, and 2 eyes had hyphema in early period after operation.

[Nursing of children after strabismus operation].

Purpose: To improve nursing quality after general anesthesia in children with strabismus operation and prevent from accidents.

Methods: 136 children with strabismus operation under general anesthesia were observed and cared by the same nursing staff. Efficient managements were performed to cure postoperative complications.