Enhancement of high-efficiency potassium ion hybrid supercapacitors utilizing oxygen-deficient CoNiO@nitrogen-doped carbon nanoflower.

Transition metal oxides represent a promising category of pseudocapacitive materials for potassium-ion hybrid supercapacitors (PIHCs) characterized by high energy density. Nevertheless, their utility is hindered by intrinsic low conductivity, restricted electrochemical sites, and notable volume expansion, all of which directly contribute to the degradation of their electrochemical performance, thereby limiting their practical applicability in supercapacitor systems. In this study, we present a facile synthesis approach to fabricate nitrogen-doped carbon-supported oxygen vacancy-rich CoNiO nanoflowers (Ov-CoNiO/NC NFs) featuring tunable surface layering and electron distribution.

Electronic Structure Regulated Nickel-Cobalt Bimetal Phosphide Nanoneedles for Efficient Overall Water Splitting.

Transition metal phosphides (TMPs) have been widely studied for water decomposition for their monocatalytic property for anodic or cathodic reactions. However, their bifunctional catalytic activity still remains a major challenge. Herein, hexagonal nickel-cobalt bimetallic phosphide nanoneedles with 1-3 μm length and 15-30 nm diameter supported on NF (NiCoP NDs/NF) with adjusted electron structure have been successfully prepared.

Analysis of the effectiveness of hearing solutions for congenital malformation of the middle and outer ear (CMMOE).

Background: There are no reports about comprehensive comparative analysis of the effects after various hearing surgery solutions for congenital malformation of the middle and outer ear (CMMOE).

Aims/objectives: To analyze the improvement of Average Air-Conduction Threshold (AACT) of pure tone after various hearing surgery solutions for CMMOE and provide a reference for the selection of accurate hearing solutions.

Materials And Methods: A retrospective analysis of 159 cases (170 ears) with CMMOE submitted to various ear surgery solutions, including: (1) Three situations of outer ear canal (OEC): ① atresia 85 ears, ② stenosis 28 ears, and ③ normal 57 ears.

Precise selection of bone conduction hearing devices for congenital malformation of the middle and outer ear (CMMOE).

No selection criteria for the four bone conduction hearing devices yet. To compare effectiveness of four bone conduction hearing devices in patients with bilateral Congenital Malformation of the Middle and Outer Ear (CMMOE). 24 Patients (25 ears) were divided into five groups: 1) Bone Anchored Hearing Aid softband (BAHA-s), 2) BAHA implant (BAHA-i nested within group 1), 3) Vibration Sound Bridge implant (VSB-i), 4) Bone Bridge implant (BB-i), and 5) Bone Conduction Hearing Aid softband (BCHA-s).

Relationship between congenital malformation of the outer ear and hearing.

There is no report on the relationship between congenital malformation of the outer ear and hearing, which makes it possible to predict the hearing level just based on microtia grades. To investigate the correlation between two types of congenital malformation of the outer ear [microtia and Outer Ear Canal Malformation (OECM)] and hearing, as well as the interrelationship among all three variables. A total of 535 cases (598 ears) of congenital malformation of the middle and outer ear (CMMOE) with hearing data, out of which 319 cases (349 ears) microtia with available images and graded by I-V, 449 cases (482 ears) OECM graded by atresia, stenosis and normal, and 87 cases (87 ears) OEC atresia graded I-IV, 301 cases (301 ears) with materials of microtia, OECM and hearing at the same time were carried out correlation analysis.

Study of hearing features of Congenital Malformation of the Middle and Outer Ear (CMMOE).

There is no study on the hearing features of congenital malformation of middle and outer ears (CMMOE), including classification, grades, and frequency characteristics, which play a decisive role in the selection of precise hearing solutions for patients. To analyze the hearing features of CMMOE and provide guidance for clinical practice. 298 cases (351 ears) with CMMOE were retrospectively analyzed for the features of 0.

Congenital ear malformation (CEM).

Background: At present, there are not international unified standards and reports on Congenital Ear Malformation (CEM) in the world, which makes it difficult to transfer information and compare the literature.

Aims/objectives: Through the statistical analysis of a large sample of CEM, a unified standard of all aspects of CEM is proposed and the data are provided for reference, which is convenient for the international work and literature comparison in this field.

Materials And Methods: Based on the author's 30 years of clinical and scientific research work on CEM and the relevant cases of 3231 (4714 ears) in our hospital, and combined with literature, statistical analysis was made.

The significance of masking for the poor hearing ear in pure tone audiometry.

Background: In pure tone audiometry, when the difference of the Average Air Conduction Threshold of pure tone (AACT) between bilateral ears is more than 40 dB HL masking must be performed on the poor side, However, we found that masking also make significance difference when the binaural AACT difference (AACT-d)was less than 40 dB HL in some patients.

Aims/objective: Assessing the significance of masking for the poor ear in pure tone audiometry in patients with different types of deafness to obtain preoperative accurate hearing.

Material And Methods: A comparative analysis of 163 cases (163 ears) with hearing difference between two ears was conducted, who were divided into three groups: G1 Congenital Malformation of the Middle and Outer Ear (CMMOE)as conductive deafness, 63 ears, G2 sudden deafness as sensorineural deafness, 65 ears, and G3 media otitis as conductive or mixed deafness,35 ears.

Innovated surgery incision for patients of congenital malformation of the middle and outer ear with infection (CMMOEI).

Background: It is the challenging clinical issue of combining debridement of infected lesions and retaining the blood skin flap for auricle reconstruction in patients of Congenital Malformation of the Middle and Outer Ear with Infection (CMMOEI).

Aims/objectives: To innovate and introduce an surgery incision to solve the challenging clinical issue of a combined debridement of infection yet retaining a well vascularized skin flap for auricle reconstruction in patients with CMMOEI.

Material And Methods: A combined innovated incision of ear sulcus and prefabricated earlobe was used for 23 cases (23 ears) with CMMOEI, The success in the management of the encountered infections, and the short and moderate-term outcome of the innovated incision to preserve a well-vascularized skin flap for subsequent auricle reconstruction were reviewed.

A clinical epidemiological study on congenital ear malformation (CEM).

Background: There is no report about the definition, classification and clinical epidemiological study of congenital ear malformation (CEM). To investigate the definition, clinical classification and distribution of a large number of CEM cases, along with the clinical and epidemiological characteristics associated with congenital malformation of the middle and outer ear (CMMOE).

Material And Methods: A total of 3231 cases (4714 ears) with CEM and related malformations were retrospectively analyzed, including 2,658 cases (4,064 ears) CEM and 573 cases (650 ears) preauricular fistulas and accessory ears, specifically related malformations to CEM.

New strategies and methods for reconstruction of the outer ear canal (OEC).

The incidence of re-stenosis or re-atresia after reconstruction of the Outer Ear Canal (OEC) in patients with Congenital Malformation of the Middle and Outer Ear (CMMOE) is very high (up to 48%), and it has been a difficult problem for otologists not being able to solve. To explore new strategies and methods to improve re-stenosis or re-atresia after reconstruction of the OEC in patients with CMMOE. According to the characteristics of reconstructed OEC (r-OEC) re-stenosis or re-atresia summarized by us, a number of new prevention strategies and methods have been proposed and related patent products have been designed, including the improvement of covering epithelium types and skin grafting methods (7 types), simulated drum ring function to prevent the formation of negative pressure in the cavity, and strengthen postoperative support to reduce skin shrinkage and bone hyperplasia.

Pure tone audiometry is a new method for evaluating congenital malformation of the middle and outer ear (CMMOE).

The preoperative evaluation of Congenital Malformation of the Middle and Outer Ear (CMMOE) is very important. Jahrsdoerfer score commonly used at present, based on CT scanning images of the temporal bone, is often unable to accurately evaluate deformity and hearing level. To investigate and promote a straightforward and easily accessible assessment method, pure tone audiometry, for the evaluation of CMMOE.

Bamboo-Modulated Helical Carbon Nanotubes for Rechargeable Zn-Air Battery.

The high-performance and sustainable electrocatalysts toward oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are essential for rechargeable Zn-air batteries (ZABs). In this paper, a natural all-components bamboo is provided as the carbon source, and melamine and cobalt chloride are provided as the nitrogen and cobalt sources, respectively. As a result, the unique helical carbon nanotubes (HCNTs) encapsulated cobalt nanoparticles are prepared, which are acted as ORR/OER electrocatalysts to improve ZABs performance.

Effect of local coordination on catalytic activities and selectivities of Fe-based catalysts for N reduction.

Electrochemical reduction of nitrogen is considered a promising route for achieving green and sustainable ammonia synthesis under ambient conditions. A transition metal atom loaded on N-doped graphene is commonly used in the nitrogen reduction reaction (NRR), but the effect of the graphene's coordination environment on electron transfer has rarely been studied. Herein, the NRR performance of Fe clusters, anchored on single-vacancy and N-doped graphene, is investigated systematically density functional theory (DFT).

Hydrogen Bond Interpenetrated Agarose/PVA Network: A Highly Ionic Conductive and Flame-Retardant Gel Polymer Electrolyte.

The gel polymer electrolyte (GPE) is the key to assembling high-performance solid-state supercapacitors (SSCs). The commercial poly(vinyl alcohol) (PVA) GPE has developed a reputation due to low ionic conductivity endowed by its high crystallinity and poor water retention capacity. In this work, density functional theory (DFT) calculations first revealed that the high crystallinity of PVA can be greatly disrupted by forming hydrogen bonds with natural agarose macromolecules.

Three-Dimensional Porous Alginate Fiber Membrane Reinforced PEO-Based Solid Polymer Electrolyte for Safe and High-Performance Lithium Ion Batteries.

The rational design and optimization of solid polymer electrolytes (SPEs) are critical for the application of safety and high efficiency lithium ion batteries (LIBs). Herein, we synthesized a novel poly(ethylene oxide) (PEO)-based SPE (PEO@AF SPE) with a cross-linking network by the introduction of alginate fiber (AF) membranes. Depending on the high-strength supporting AF skeleton and the cross-linking network formed by hydrogen bonds between the PEO matrix and AF skeleton, the obtained PEO@AF SPE exhibits an excellent tensile strength of 3.

Generating Oxygen Vacancies in MnO Hexagonal Sheets for Ultralong Life Lithium Storage with High Capacity.

The polar surface of (001) wurtzite-structured MnO possesses substantial electrostatic instabilities that facilitate a wurtzite to graphene-like sheet transformation during the lithiation/delithiation process when used in battery technologies. This transformation results in cycle instability and loss of cell efficiency. In this work, we synthesized MnO hexagonal sheets (HSs) possessing abundant oxygen vacancy defects (MnO-Vo HSs) by pyrolyzing and reducing MnCO HSs under an atmosphere of Ar/H.

Highly Efficient Gas Sensor Using a Hollow SnO Microfiber for Triethylamine Detection.

Triethylamine (TEA) gas sensors having excellent response and selectivity are in great demand to monitor the real environment. In this work, we have successfully prepared a hollow SnO microfiber by a unique sustainable biomass conversion strategy and shown that the microfiber can be used in a high-performance gas sensor. The sensor based on the hollow SnO microfiber shows a quick response/recovery toward triethylamine.

Multishelled Ni-Rich Li(Ni Co Mn )O Hollow Fibers with Low Cation Mixing as High-Performance Cathode Materials for Li-Ion Batteries.

is proposed to synthesize highly porous multishelled Ni-rich Li(Ni Co Mn )O hollow fibers with very low cation mixing. The low cation mixing results from the cation confinement by the novel "egg-box" structure in the alginate template. These hollow fibers exhibit remarkable energy density, high-rate capacity, and long-term cycling stability when used as cathode material for Li-ion batteries.

Vibrant Soundbridge implantation via the third window in two Chinese patients with severe bilateral congenital aural atresia.

Conclusion: In patients with undeveloped vestibular/oval windows and inaccessible round windows, Vibrant Soundbridge (VSB) implantation performed by placing the transducer into a reconstructed window on the inner tympanum wall demonstrated significant improvement in hearing and verbal communication ability.

Objective: To report our surgical experience with new placement of the VSB in pediatric patients with undeveloped vestibular windows, inaccessible round windows, and severe bilateral congenital aural atresia (CAA).

Methods: In two patients with bilateral CAA selected for middle ear implantation, CT scans revealed severe middle ear malformation including inaccessible round windows, absence of vestibular/oval windows, and abnormal facial nerve anatomy.

[Diagnosis and treatment of complicated foreign bodies in the middle ear (5 cases reported)].

Objective: To investigate the sources of foreign bodies in the middle ear, and to analyze experience and lessons of clinical diagnosis and therapy.

Method: Five cases of foreign bodies in the middle ear with general information presenting to our department and receiving surgical treatment were reviewed retrospectively.

Result: The foreign bodies of 4 cases were inserted by trauma, while 1 case by iatrogenic injury.

[Clinical analysis of 182 cases esophageal foreign bodies and treatment for special cases].

Objective: To provide clinical reference by summarizing and analyzing characteristics, therapeutic principles and methods for special cases of esophageal foreign bodies.

Method: Statistical analysis 182 cases with esophageal foreign bodies, including 41 special cases. Surgery 165 cases, 17 cases without surgery.

Induction of the chick columella and its integration with the inner ear.

Background: The auditory complex of the chick, like that of humans, is made of intimate and highly ordered connections between the inner ear, the middle ear, and the outer ear. Unlike mammals, the middle ear of chick has only one ossicle, known as the columella. The independent lineages of the two suggest that some mechanism must exist that ensures the connectivity between the inner ear and the columella; however, the basis of integration is not known.