Ultrathin Ni-MOF nanosheet arrays grown on polyaniline decorated Ni foam as an advanced electrode for asymmetric supercapacitors with high energy density.

Metal-organic frameworks (MOFs) have emerged as promising electrode materials for supercapacitors (SCs), due to their diverse functionalities and high porosity. However, the applications of MOFs in practical SC devices are restricted by their intrinsic low conductivity and poor stability. Herein, a thin layer of conductive polyaniline (PANI) was decorated on Ni foam (NF) before the growth of Ni-MOF to tackle these issues. PANI not only improves the conductivity but also promotes the formation of Ni-MOF nanosheet arrays and ensures good mechanical adhesion. The as-prepared Ni-MOF/PANI/NF exhibits a high areal capacitance (3626.4 mF cm-2 at 2 mA cm-2) and good rate capacity (71.3% at 50 mA cm-2). Moreover, an asymmetric supercapacitor (ASC) device using Ni-MOF/PANI/NF and activated carbon (AC) can deliver a maximum energy density of 45.6 W h kg-1 (850.0 W kg-1) with excellent cycling stability (capacitance retention of 81.6% after 10 000 cycles), outperforming most of the reported pristine MOF-based ASC devices.

A Zinc Cobalt Sulfide Nanosheet Array Derived from a 2D Bimetallic Metal-Organic Frameworks for High-Performance Supercapacitors.

Porous ternary metal sulfide integrated electrode materials with abundant electroactive sites and redox reactions are very promising for supercapacitors. Herein, a porous zinc cobalt sulfide nanosheet array on Ni foam (Zn-Co-S/NF) was constructed by facile growth of 2D bimetallic zinc/cobalt-based metal-organic framework (Zn/Co-MOF) nanosheets with leaf-like morphology on NF, followed by additional sulfurization. The Zn-Co-S/NF nanosheet array acted directly as a supercapacitor electrode showing much better electrochemical performance (2354.3 F g-1 and 88.6 % retention over 1000 cycles) when compared with zinc cobalt sulfide powder (355.3 F g-1 and 75.8 % retention over 1000 cycles), which originates from good electrical conductivity and mechanical stability, abundant electroactive sites, and facilitated transportation of electrons and electrolyte ions due to the unique nanosheet array structure. An asymmetric supercapacitor (ASC) device assembled from Zn-Co-S/NF and activated carbon electrodes can deliver a highest energy density of 31.9 Wh kg-1 and a maximum power density of 8.5 kW kg-1 . Most importantly, this ASC also shows good cycling stability (71.0 % retention over 10000 cycles). Furthermore, a red LED can be powered by two connected ASCs, and thus as-synthesized Zn-Co-S/NF has great potential for practical applications.

[Stimuli phrases of adductor spasmodic dysphonia phonatory break in mandarin Chinese].

OBJECTIVE: To investigate the characteristics of adductor spasmodic dysphonia phonatory break in mandarin Chinese and select the stimuli phrases. METHOD: Thirty-eight patients with adductor spasmodic dysphonia were involved in this study. Standard phrase " fù mu xin" and a speech corpus in mandarin Chinese with 229 syllables covering all vowel and constant of mandarin Chinese were selected. Every patient read the phrases above twice in normal speed and comfortable voice. Two auditory perpetual speech pathologists marked phonatory break syllables respectively. The frequency of phonatory break syllables and their located phrases were calculated, rated and described. The phrases including the most phonatory break syllables were selected as stimuli phrases, the phonatory break frequency of which was also higher than that of standard phrase "fù mu xin". RESULT: Phonatory break happened in the reading of all patients. The average number of phonatory break syllables was 14 (3-33). Phonatroy break occurred when saying 177 (77.3%) syllables in the speech corpus. The syllables "guo, rén, zang, diàn, che, gè, guan, a, ba, ne, de" broke in 23.1%-41.0% patients. These syllables belonged to the phrases "ping guo, huo che, shì de, ni shì gè hao rén, wo mén shì you zong shì ba qin shì nong dé hen zang, wo mén nà bian you wang qiú yùn dong chang, can guan, jiu ba hé yi gè miàn bao dìan, ta shì duo me kang kai a,wo ying gai zài xìn li xie yi xie shén me ne?". Thirty-seven patients (97.3%) had phonatory break in above mentioned words. Ratios of these words phonatory break also were more than "fù mu xin". CONCLUSION: Adductor spasmodic dysphonic patients exhibited different degrees of phonatory break in mandarine Chinese. The phrases" shì de, ping guo, huo che, ni shì gè hao rén, wo mén nà bian you wang qiú yùn dong chang, can guan, jiu ba hé yi gè miàn bao dìan, ta shì duo me kang kai a" were recommended as stimuli phrases for adductor spasmodic dysphonia evaluation.

Changes in electrical response function and myosin heavy chain isoforms following denervation and reinnervation of bilateral posterior cricoarytenoid muscles in dogs.

CONCLUSIONS: Both electrical response function and mRNA expression of myosin heavy chain (MyHC) types 2X, 1, and Neonatal of bilateral posterior cricoarytenoid (PCA) muscle changed after denervation or reinnervation in canines. OBJECTIVES: There is a need to investigate the electrical response function MyHC alteration of denervation or reinnervation in the bilateral PCA muscle of large animals. METHODS: MyHC isoforms expression profile and PCA muscle function outcome were detected by real-time reverse transcribed-polymerase chain reaction and muscle response to functional electrical stimulation, 9 weeks after denervation and reinnervation with ansa-recurrent laryngeal nerve anastomosis in dogs. RESULTS: Denervation produced up-regulation of MyHC-1 and MyHC-Neonatal messenger ribonucleic acid (mRNA) expression. Reinnervation caused a decrease of MyHC-2X mRNA expression. The electrical voltage threshold of vocal fold movement and maximum abduction of denervation were greater than that of the reinnervated or control group. The denervated vocal abduction maximum of response to electrical stimulation was less than that in reinnervation or control groups.