[Effects of cortical bone thickness and jaw bone density on pain during implant surgery].

Purpose: To investigate the effects of different cortical bone thickness and jaw bone density at implant sites on intraoperative pain during implant surgery.

Methods: One hundred and eighty-seven patients(263 implant sites) who underwent implant placement surgery at the Fourth Affiliated Hospital of Nanchang University from August 2021 to August 2022 were selected to investigate the effects of different cortical bone thickness and jaw bone density HU values at implant sites on the anesthetic effect under local infiltration anesthesia with epinephrine in articaine. SPSS 26.

[Analysis of clinical effects and risk factors of short implant followed up for 7-9 years].

Purpose: To evaluate the long-term clinical efficacy of short implants and analyze the influencing factors of the survival rate.

Methods: A total of 178 patients who received implant therapy in the Department of Stomatology, the Fourth Affiliated Hospital of Nanchang University from January 2010 to December 2014 were selected, including 334 short implants of Bicon (implant length ≤6 mm). The basic condition, restoration design, short implant survival rate and complications were observed and analyzed.

A chloride-doped silver-sulfide cluster [AgSCl(CCBu)]: hierarchical assembly, enhanced luminescence and cytotoxicity to cancer cells.

The formation of high-nuclear silver(I) clusters remains elusive and their potential applications are still underdeveloped. Herein, we report an unprecedented gigantic Ag ([AgSCl(CCBu)](SbF)) cluster co-templated by Cl and S, which was well-defined by single-crystal X-ray diffraction and high-resolution mass spectrometry. The cluster exhibits a hierarchical structure consisting of fused AgX kernel, AgX shell and "cluster of clusters assembling" of four pentagonal concave polyhedral {AgX} units.

Displacement of the full body of a dental implant into the sinus space without membrane perforation and subsequent osseointegration: a case report.

An increasing number of studies have investigated the use of osteotome sinus floor elevation (OSFE) with simultaneous implant placement for maxillary sinus floor residual bone height (RBH) <4 mm. Many studies have reported good clinical results, but very few have reported complications related to this procedure. Here, the case of a 50-year-old female patient with an RBH in the left upper posterior region of 1-4 mm, who underwent OSFE with simultaneous placement of three Bicon short® implants, is described.

Unusual structural transformation and luminescence response of magic-size silver(I) chalcogenide clusters ligand-exchange.

Structural transformations of nanoclusters provide a platform to tune their properties and understand the fundamental science due to their intimate structure-property correlation. Here, we present an alkynyl ligand-exchange induced growth of atomically precise silver(I) clusters, which are particularly of interest because of their luminescence response at room temperature. SCXRD and UV-vis map out the growth steps of the cluster from [AgS(CCBu)] featuring a pseudo- concave AgS to [AgS(CCPhBr)] with a pseudo- core-shell AgS@Ag@Ag, which is driven by a thermodynamic route under the disruption of ligands.

Solvent-driven crystal-crystal transformation and morphology change in a 2D layered inorganic POM-based framework.

In this paper, a pure 2D inorganic POM-based framework underwent a single crystal to single crystal conversion when soaked in organic solvents that are miscible with water, forming a more densely packed identical framework accompanying the formation of nanowires. The change in morphology is closely related to the surface tension of water, and the lower surface tension achieved by dehydration promotes the formation of nanowires, which is revealed by SXRD, PXRD, SEM, TGA and electrochemical impedance spectroscopy (EIS).

[Retrospective study on transcrestal sinus floor elevation with simultaneous implantation of short implants].

Objective: To explore the changes in bone height of the maxillary sinus floor at different sinus ridge heights after transcrestal sinus floor elevation (tSFE) with the simultaneous implantation of short implants.

Methods: A total of 74 Bicon short implants were implanted into 37 patients during the same period of maxillary sinus elevation. The residual bone height (RBH)<4 mm group has 43 sites, and the RBH≥4 mm group has 31 sites.

Unconventional implant strategy for patients with a limited interocclusal space in the posterior region: a case report.

Background: Implant prostheses require sufficient interocclusal space. In cases of limited interocclusal space, reducing or extracting over-erupted opposing teeth, orthodontic intrusion, or surgical reconstruction of the edentulous space are commonly used to restore the interocclusal space. However, there are disadvantages to these approaches.

Synthesis of a novel phosphazene-based flame retardant with active amine groups and its application in reducing the fire hazard of Epoxy Resin.

A novel compound containing active amine groups of polyphosphazene (PBFA) was successfully synthesized and applied as a reactive flame-retardant additive in epoxy (EP) resin. It was synthesized from N-aminoethylpiperazine and hexachlorocyclotriphosphazene using a simple method, and its structure was well-characterized. The results indicated that introducing PBFA into EP composites significantly improves the resistance to fire and suppresses smoke generation.

[Origins determination of Herba Abri cantoniensis and Herba Abri mollis with FTIR combined with fuzzy cluster and curve-fitting].

The methods of fuzzy cluster and curve-fitting combined with FTIR were used to determine the origins of Herba Abri cantoniensis and Herba Abri mollis. The spectra of Herba Abri cantoniensis and Herba Abri mollis are similar, both with typical spectral shapes. The two spectra can be divided into 3 parts: the 1st is 3 500-2 800 cm(-1), containing stretching bands of -OH, N-H, and CH2 ; the 2nd is 1 800-800 cm(-1), containing stretching bands of ester carbonyl group and indican C-O(H), vibrational bands of C=C and benzene ring; The 3rd is 800-400 cm(-1), containing skeletal vibration and scissoring vibration of molecular.

[AOTF-near infrared spectroscopy for determining tanshinone II A in returning extraction process of Salvia miltiorrhiza].

Objective: To explore a method on-line determining the contents of tanshinone II A in returning extraction process of Salvia miltiorrhiza by AOTF-Near infrared spectroscopy.

Methods: Firstly, the sample was collected in the extraction process of Salvia miltiorrhiza. Then HPLC was used as a reference method to determine the contents of tanshinone II A in the sample.

[A new method for quick identification for fufang danshen tablets by AOTF-near infrared spectroscopy].

Objective: To establish a new method using AOTF-Near infrared spectroscopy for fast identifying Fufang Danshen tablets.

Method: Near-infrared spectroscopy of Fufang Danshen tablets from different factories and different bacth numbers were collected and the discriminant analysis model (FFDS-C) was established with principal component analysis. This model was applied to predict the the different samples of Fufang Danshn tablets.

[Effect of chlorine and phosphorus on water soluble and exchangeable lead in a soil contaminated by lead and zinc mining tailings].

Effect of chlorine on in situ lead immobilization using phosphorus in a soil contaminated by lead and zinc mining tailings was evaluated. The results showed that water soluble and exchangeable Pb were reduced by 92.0%-95.

[Preparation and structural characterization of mixed LB films of TMB * TCNQ and stearic acid].

Mixed LB films of the CT complex of TMB * TCNQ and stearic acid (SA) were prepared. The structures, molecular orientation and morphology of the mixed LB films were characterized by IR, UV-Vis-NIR, XRD and AFM. Our results show that TMB * TCNQ could be deposited on solid substrates by mixing with SA.

Prevalence and risk factors of facial acne vulgaris among Chinese adolescents.

Unlabelled: Acne vulgaris, a very common condition among adolescents, can result in psychological distress, including anxiety and depression. The purpose of this study was to assess the prevalence and risk factors of acne vulgaris among Chinese adolescents. In the Zhou Hai district of Guangdong Province, 3163 students 10 to 18 years old were selected from 7 schools.

Microemulsion-mediated hydrothermal synthesis of photocatalytic TiO2 powders.

A reverse microemulsion-mediated hydrothermal route has been employed to synthesize photocatalytic titanium dioxide (TiO2) powders. Nano-crystalline monophasic anatase TiO2 powders were successfully prepared when the microemulsion-derived precursors were hydrothermally treated. The advantage of using this microemulsion mediated hydrothermal route is the significant reduction in reaction time and temperatures as compared with the conventional hydrothermal process.

[Optimization of manninotriose preparation from stachoyse].

Objective: To optimize the processing of mannatriose preparation from stachyose by acidolysis.

Methods: An orthogonal experiment was performed to select a better condition of acidolysis. Fructoes and stachyose was determined by HPLC.

Synthesis of photocatalytic TiO2 thin films via the high-pressure crystallization process at low temperatures.

TiO2 thin films with a monophasic anatase structure were synthesized via a high-pressure crystallization (HPC) process which successfully lowered the crystallization temperature of TiO2 films from 350 to 150 degrees C. The thermal budget and energy consumption during the crystallization process were markedly reduced and dense films without cracks were obtained. During the HPC process, crystallization took place throughout the films and TiO2 films with uniform crystallinity were obtained.

[Quality evaluation of soil fluorine on Hangjiahu Plain based on GIS].

Contents of fluorine in the plough layer (0-20 cm) of paddy soils from Hangjiahu Plain were investigated to evaluate quality of fluorine using total fluorine index method. Kriging method was applied to study the spatial variability of soil total fluorine in relation to their influential factors and their distribution maps were obtained based on GIS. The results showed that the range of total fluorine (TF) contents in the soils from central and eastern parts of Hangjiahu Plain was higher than that from the western part.

[Extraction and salting-out purification of alpha-galactosidase and beta-glucosidase from fresh roots of Rehmannia glutinosa].

Objective: To extract and preliminarily purify alpha-galactosidase and beta-glucosidase from the fresh roots of Rehmannia glutinosa.

Methods: With the enzyme activity as a criterion, the best procedure of extraction was selected though orthogonal design method, and the desired saturation of ammonium sulfate in two-step salting-out was settled by gradient sedimentation of root extract according to enzyme activity and protein content.

Results: Temperature and solvent volume affect the extraction of alpha-galactosidase significantly, while solvent type to beta-glucosidase.

[Application of Raman spectra to the research of jades excavated from Xue Jiagang site].

Non-destructive analysis is always the aim in jades' research. The present article applied the Raman spectroscopy to the research on jades excavated from the Xue Jiagang site and achieved good result in the main mineral, inclusion and phenocryst. The study shows that as a non-destructive technique Raman spectroscopy can be applied to ancient jades conveniently and practically, and it can detect not only the surface information of ancient jades, but also the interior information.

Biological formation of 5-aminolevulinic acid by photosynthetic bacteria.

In this study, 7 stains of Rhodopseudomonas sp. were selected from 36 photosynthetic bacteria stains storied in our laboratory. Rhodopseudomonas sp.

In vitro activities of tigecycline against clinical isolates from Shanghai, China.

To evaluate the in vitro activity of tigecycline, the minimum inhibitory concentrations (MICs) of tigecycline against 1,201 strains of recent clinical isolates from 10 hospitals in Shanghai, China were determined and compared with selected comparators. Results showed that tigecycline had broad-spectrum antimicrobial activity. It was highly active against Gram-positive cocci, including methicillin-resistant Staphylococcus spp.