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We investigated the developmental trajectories of supervisory working alliance over time and their correlations with Chinese counseling trainees' client symptom relief. Participants were 89 beginning counseling trainees from a master's level training program in China. Results showed three clusters of developmental trajectories, including "Stable and Increasing," "Rupture and Repair," and "Bonding and Distancing." Trainees with the first trajectory had greater client symptom relief. These results suggested the possible distinct clusters of developmental trajectories of SWA across beginning counseling trainees, and highlighted the potential benefit of maintaining a stable and strong SWA with trainees that could facilitate better client outcomes. [ABSTRACT FROM AUTHOR]

Kenoargentotetrahedrite-(Fe) is observed as greenish-grey anhedral grains, 50–150 μm in size, in association with galena, sphalerite and chalcopyrite in the Bajiazi Pb-Zn deposit of magmatic-hydrothermal type, Liaoning, China. The empirical formula from electron microprobe analyses is Ag5.50Cu4.17Fe1.75Zn0.31Sb3.96As0.04S12.08, corresponding to the ideal formula Ag6Cu4Fe2Sb4S12. The crystal structure of kenoargentotetrahedrite-(Fe) has been determined and refined by single-crystal X-ray diffraction with R1 = 0.0192 for 1866 (404 unique) reflections. It is cubic, space group I 4 ¯ 3m with unit cell parameters a = 10.4928(2) Å, V = 1155.26(7) Å3 and Z = 2. The structure of kenoargentotetrahedrite-(Fe) is characterized by a poor occupancy of 0.05 of the octahedral S(2) site with the S(2)-M(2) bonding length of 1.9994(8) Å. The six Ag atoms at M(2) around S(2) form an octahedron cluster (Ag6)4+ with the valence state of +4 and Ag-Ag distance of 2.8276(1) Å. The structure is identical to that by Rozhdestvenskaya et al., being composed of a collapsed sodalite-like framework of corner-connected M(1)S4 tetrahedron forming cages containing M(2)6-octahedron cluster, encircled by four SbS3 trigonal pyramids. It is related to the tetrahedrite group minerals with the existence of the (Ag6)4+ cluster replacing the S(2)-centered Ag6 octahedron according to the substitution mechanism 6M(2)Ag+ + S(2)S2−=M(2)(Ag6)4+ + S(2) S. [ABSTRACT FROM AUTHOR]

DNA-functionalized Au nanoparticles (AuNPs) have been intensively exploited as programmable atom equivalents (PAEs) for the self-assembly of molecule-like structures. However, it remains challenging to build hierarchical PAE assemblies via discrete DNA bonds at different levels. Here, we report a strategy to program DNA bond length and bond energy on PAEs using DNA encoders carrying consecutive adenines (polyA). On AuNPs, we built three types of DNA motifs with different topologic configurations, which can form bonds for PAE self-assembly. By small-angle X-ray scattering (SAXS) analysis, we found that the bond length and flexibility between the coupled PAEs can be tuned by programming the bond structure. We also found that these bonds show different bond energies and thus differ, depending on their topologic configuration, leading to different PAE assembly efficiencies. We demonstrated that the bonds at different levels can be arranged in different directions on one nanoparticle, leading to asymmetric PAEs that allow ionic strength-controlled hierarchical assembly of multiparticle structures. This programmable bonding system may provide a new route for building complex plasmonic superstructures. Nanoparticle assembly: Organization by DNA Using different DNA structures can control how gold nanoparticles organize themselves according to researchers in China. Dictating the way nanoparticles aggregate when mixed is important for reproducibly controlling the properties of the resulting material. One way to achieve this is to coat the nanoparticles with DNA: DNA base-pairing allows for easily controlled assembly and enables the nanoparticles to organize themselves into a repeating pattern. This lattice structure is similar to that formed by atoms in solids, and so these DNA- coated particles are often referred to as "programmable atom equivalents" (PAEs). Jiang Li from the Shanghai Advanced Research Institute and co-workers investigated three types of DNA with different recurring patterns on gold nanoparticles. They showed that the different patterns created different bond lengths, leading to different PAE assembly efficiency. In this work, we report a strategy to build programmable atom equivalents (PAEs) with tailorable DNA bond length and bond energy using DNA encoders carrying consecutive adenines (polyA). We find that the bond length and bond energy can be tuned by programming the topologic configurations of the DNA encoders, which lead to differently leveled bonds and asymmetric PAEs allowing for directional, hierarchical assembly of multi-particle structures. This programmable bonding system may provide a new route for building complex plasmonic superstructures. [ABSTRACT FROM AUTHOR]

[Display omitted] • The properties of the spent adsorbent product were investigated based on DFT methods. • The effects of oxygen functional groups and halogen species were considered. • The bond strength and bond polarity were characterized quantitatively. The coal-fired power plant is the main contributor to anthropogenic mercury emission in China. Adsorbent injection technology has proven to be the most promising and established strategy for controlling mercury release. The ultimate fate of mercury-loaded adsorbent product would be landfilled or reused as architecture materials. Either way, the chemical stability of mercury-containing products is important. The objective of this research is to reveal the binding nature of spent adsorbents. In particular, computational chemistry was utilized. The effects of different oxygen functional groups (carbonyl, carboxyl, lactone, and phenol) on the carbonaceous surface were considered. Furthermore, the influence of chlorine and bromine was also considered. The bond length and Mayer bond order value of chemical bonds of interest were calculated and compared to indicate their bond strength. The electron localization function (ELF) was employed to locate electron high localization regions in the product. Additionally, the Hirshfeld weighting function for decomposing bonding localized molecular orbital (LMO) to the two connected atoms compositions were utilized to characterize different chemical bonds bonding polarity quantitatively. In summary, the results are beneficial for understanding the chemical characteristics and environmental stability of used mercury removal adsorbents. [ABSTRACT FROM AUTHOR]