Study on the Synthesis and Electrochemical Properties of Nitrogen-Doped Graphene Quantum Dots.

Nitrogen-doped graphene quantum dots (N-GQDs) are widely used in biosensing, catalysis, and energy storage due to their excellent conductivity, high specific surface area, unique quantum size effects, and optical properties. In this paper, we successfully synthesized N-GQDs using a facile hydrothermal approach and investigated the effects of different hydrothermal temperatures and times on the morphology and structure of N-GQDs. The results indicated that the size of N-GQDs gradually increased and they eventually aggregated into graphene fragments with increasing temperature or reaction time.

Facile Synthesis of Ag-Doped Urchin-like MnO on Carbon Cloth for Supercapacitors.

Based on MnO/carbon cloth (CC) composite materials, an Ag-doped MnO nanowire, self-assembled, urchin-like structure was synthesized in situ on the surface of CC using a simple method, and a novel and efficient flexible electrode material for supercapacitors was developed. The morphology, structure, elemental distribution, and pore distribution of the material were analyzed using SEM, TEM, XRD, XPS, and BET. The electrochemical performance was tested using cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD).

A systematic review and meta-analysis of capsular contracture rate after breast augmentation with textured and smooth breast prostheses.

Background: With the development of breast augmentation and the increased people's pursuit of beauty, more and more women choose breast prosthesis breast augmentation. This study aimed to evaluate the incidence of capsular contracture after breast augmentation with textured and smooth breast prostheses by meta-analysis.

Methods: Studies relating to capsular contracture after breast augmentation with textured breast prosthesis and smooth breast prosthesis were retrieved from the Chinese Journal Full-text Database (CNKI), VIP, the Wanfang Science and Technology Journal Full-text Database, the Chinese Biomedical Literature Search Database (CBM), PubMed, Embase, and the Cochrane Library.

A convenient four-component one-pot strategy toward the synthesis of pyrazolo[3,4-d]pyrimidines.

An efficient one-pot synthesis of pyrazolo[3,4-d]pyrimidine derivatives by the four-component condensation of hydrazines, methylenemalononitriles, aldehydes and alcohols has been developed via two different reaction pathways. The structures of target products were characterized by IR spectroscopy, NMR ((1)H and (13)C) spectroscopy and HRMS (ESI) spectrometry. The crystal structure of 4-ethoxy-6-(2-nitrophenyl)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine was determined by single crystal X-ray diffraction.

Bis[5-meth-oxy-2-(meth-oxy-carbon-yl)phen-yl] methyl-phospho-nate.

In the title phospho-nate, C19H21O9P, the dihedral angle between the benzene rings is 63.33 (3)°, and the P atom has a distorted tetra-hedral geometry, with angles in the range 101.30 (6)-120.

[Analysis on follow-up efficacy and safety of slow transit constipation treated with individualized deep puncture at Tianshu (ST 25): a multi-central randomized controlled trial].

Objective: To evaluate the follow-up efficacy and safety on slow transit constipation (STC) treated with individualized deep puncture at Tianshu (ST 25).

Methods: One hundred and twenty-eight cases of STC were randomized into a deep puncture group (64 cases), a western medication group (31 cases) and a shallow puncture group (33 cases) at the ratio of 2:1:1. In the deep puncture group, electroacupuncture of deep puncture was applied to bilateral Tianshu (ST 25).

N-(2-Methyl-3-oxo-1,3-diphenyl-prop-yl)acetamide.

In the title compound, C18H19NO2, the dihedral angle between the benzene rings is 42.0 (1)°. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯π inter-actions.

5'-Methyl-sulfanyl-4'-oxo-7'-phenyl-3',4'-dihydro-1'H-spiro-[cyclo-hexane-1,2'-quinazoline]-8'-carbonitrile dimethyl-formamide monosolvate.

In the title compound, C(21)H(21)N(3)OS·C(3)H(7)NO, the carbonitrile mol-ecule is built up of two fused six-membered rings and one six-membered ring linked through a spiro C atom. The 1,3-diaza ring adopts an envelope conformation and the cyclo-hexane ring adopts a chair conformation. The dihedral angle between the aromatic rings is 46.

[Assessment of the operation standard and safety on the individual deep puncturing at Tianshu (ST 25) under CT].

Objective: To discuss the individual operation standard and safety on the deep puncturing at Tianshu (ST 25).

Methods: The deep insertion through the peritoneum about 1-2 millimeter was taken as individual standard depth at Tianshu (ST 25) for 39 patients. Using CT cross-section scanning and image surveying, the regression analysis was conducted on the impacts of abdominal circumference (AC,cm) to the peritoneum depth.

Ecological risk assessment of genetically modified crops based on cellular automata modeling.

The assessment of ecological risk in genetically modified (GM) biological systems is critically important for decision-making and public acceptance. Cellular automata (CA) provide a potential modeling and simulation framework for representing relationships and interspecies interactions both temporally and spatially. In this paper, a simple subsystem contains only four species: crop, target pest, non-target pest and enemy insect, and a three layer arrangement of LxL stochastic cellular automata with a periodic boundary were established.

The safety of electroacupuncture at Hegu (LI 4) plus oxytocin for hastening uterine contraction of puerperants--a randomized controlled clinical observation.

Objective: To investigate the safety of electroacupuncture plus oxytocin for uterine contraction of puerperants.

Methods: 276 puerperants with difficult labor were randomly divided into a medication group, treated with intravenous dripping of oxytocin, and an acupuncture plus medication group, in the medication group, intravenous dripping of oxytocin was given, and in the other group, acupuncture at bilateral Hegu (LI 4) was added. Heart rate, respiratory frequency, blood pressure of puerperants, fetal heart rate and birth process were observed.