Defect Emission and Its Dipole Orientation in Layered Ternary Znln S Semiconductor.

Defect engineering is promising to tailor the physical properties of 2D semiconductors for function-oriented electronics and optoelectronics. Compared with the extensively studied 2D binary materials, the origin of defects and their influence on physical properties of 2D ternary semiconductors are not clarified. Here, the effect of defects on the electronic structure and optical properties of few-layer hexagonal Znln S is thoroughly studied via versatile spectroscopic tools in combination with theoretical calculations.

Hot Deformation Behavior and Processing Maps of ZnSnO/Cu Composites.

In this work, we designed ternary ZnSnO particle-reinforced Cu matrix composites and evaluated the hot deformation behavior of ZnSnO/Cu composites. The hot deformation characteristics of typical dynamic recrystallization were probed by the resulting true stress-strain curves of ZnSnO/Cu composites. The influences of deformation conditions, including temperatures (650-850 °C) and strain rates (0.

In Situ Fabrication and Static Contact Resistance of CdMoO Reinforced Cu Matrix Composites.

Particle-reinforced Cu-based electrical contact materials prepared by traditional powder metallurgical methods suffer the same critical problem, where the agglomeration of the addition phases in the Cu matrix significantly deteriorates the performance of the composites and restricts their application. In this work, CdMoO/Cu matrix composites were fabricated by an in situ method and followed by a powder metallurgical process. Firstly, CdMoO/particles formed a nucleus and grew up based on the surfaces of Cu particles, realizing the controllable in situ synthesis of mixed powders with homogeneously dispersed CdMoO nanoparticles via a one-step reaction.

[A Sero-epidemiological Study on Transfusion-Transmissible Infectious among Volunteer Blood Donors From 2016 to 2020 in Nanjing].

Objective: To investigate the status of transfusion-transmissible infection (TTI) among voluntary blood donors in Nanjing in recent five years, in order to provide data support for the recruitment of blood donors and formulation and updating of blood screening strategies.

Methods: HIV/HBV/HCV/TP serological markers were detected by ELISA in 487 120 blood donors in Nanjing from 2016 to 2020. Confirmatory assay was applied in anti-HIV positive samples by Nanjing Municipal Center for Disease Control and Prevention.

[Study on Reentry Evaluation Mode for Blood Donors Used to be HBV Reactive in Jiangsu Province].

Objective: To evaluate the risk of reentry in HBV reactive blood donors and feasibility of HBV reentry strategy.

Methods: HBsAg or HBV DNA donors who had been quarantined for more than 6 months in Jiangsu Province could propose for reentry application. Blood samples were routinely screened by dual-ELISA for HBsAg, anti-HCV, HIV Ab/Ag, and anti- Treponema pallidum and those non-reactive ones were tested by minipool nucleic acid testing (NAT) for three times.

[Prevalence of Human T-Cell Lymphotropic Virus Type 1 and 2 among Blood Donors in Jiangsu from 2016 to 2019].

Objective: To investigate the prevalence of human T-cell lymphotropic virus (HTLV) type-I/II infection among voluntary blood donors in Jiangsu (Nanjing, Suzhou, Xuzhou).

Methods: From 2016 to 2019, 408 262 samples of voluntary blood donors from four blood stations in Jiangsu Province (Jiangsu Province Blood Center, Nanjing Red Cross Blood Center, Suzhou Central Blood Station, and Xuzhou Central Blood Station) were screened for HTLV-I/II antibody by ELISA. The positive samples were sent to National Center for Clinical Laboratories for confirmation by RT-PCR and Western blot.

Effect of Pre-Stretch on the Precipitation Behavior and the Mechanical Properties of 2219 Al Alloy.

The influence of pre-stretch on the mechanical properties of 2219 Al alloys sheets were systematically investigated, with the aim of examining the age-strengthening in parts draw-formed from as-quenched sheets. The precipitation was characterized based on differential scanning calorimetry (DSC) analysis and transmission electron microscope (TEM) observation of specimens of as-quenched and quenched-stretched condition to address the influence of pre-stretching. A tensile test was performed to evaluate the effect on mechanical properties.

[Analysis of Reasons Causing False Positive of HBsAg Single-ELISA-Reactive in Blood Donors].

Objective: To explore the reasons causing the false positive of HBsAg single-ELISA-reactive in blood donors of Jiangsu province so as to provide reference data for the return of blood donors.

Methods: Serological test: HBsAg ELISA parallel detection was performed on 319 444 samples of blood donors from 2014 to 2017; the ECLIA was employed to confirm the single-ELISA-reactive (S/CO≥0.5) samples, the nucleic acid test was used to detect the HBV DNA on the all single-ELISA-reactive samples in 6/8 people mixed/single.

[Evaluation of the Cutoff of Anti-HCV Antibody Enzyme-Linked Immunosorbent Assay in 7 Blood Station Laboratories].

Objective: To evaluate the necessity and suitability of the anti-HCV ELISA teot gray zone setted up by 7 blood station laboratories.

Methods: 7 blood station laboratories were coded as 1, 2, 3, 4, 5, 6 and 7 respectively; 8 kinds of ELISA reagents were coded as A, B, C, D, E, F, G and H respectively. 1 or 2 of 8 ELISA reagents produced by different manufactories were used to detect the anti-HCV in specimens of same group by 7 blood station laboratories; the Westen blot was used to detect the specimens with difference of detected results so as to difine the serological status of specimens.

Does Distal Clavicle Resection Decrease Pain or Improve Shoulder Function in Patients With Acromioclavicular Joint Arthritis and Rotator Cuff Tears? A Meta-analysis.

Background: Acromioclavicular joint arthritis is a common, painful, and often missed diagnosis, and it often accompanies other shoulder conditions such as rotator cuff disease. Whether distal clavicle resection is important to perform in patients undergoing surgery for rotator cuff tears and concomitant acromioclavicular joint arthritis is controversial.

Questions/purposes: The purpose of this study was to perform a systematic review and meta-analysis of randomized controlled trials (RCTs) to evaluate the effect of distal clavicle resection on (1) outcome scores; (2) shoulder ROM, joint pain or tenderness, and joint instability; and (3) risk of reoperation among patients treated surgically for rotator cuff tears who had concomitant acromioclavicular joint arthritis.

Surface characterization and degradation behavior of polyimide films induced by coupling irradiation treatment.

The degradation behavior of polyimide in extreme environments, especially under coupling treatment, directly determines the service life of several key components in spacecraft. In this research, the combined effect of a high energy electron beam (1.2 MeV), heavy tensile stress (50 MPa) and constant high temperature (150 °C) was taken into account to study the surface modification and degradation behavior of polyimide films.

Effects of dopants on the adhesion and electronic structure of a SnO/Cu interface: a first-principles study.

Doping has been adopted as a versatile approach for tuning the adhesion of metal oxide/metal interfaces. Understanding the mechanism of doping at the interface adhesion on the atomic and electronic scale is crucial for the rational design and optimization of metal oxide/metal composites. In this work, we have investigated the effects of dopants on the adhesion of SnO2/Cu interfaces through first-principles calculations.

Photoresponse Enhancement in Monolayer ReS Phototransistor Decorated with CdSe-CdS-ZnS Quantum Dots.

ReS films are considered as a promising candidate for optoelectronic applications due to their direct band gap character and optical/electrical anisotropy. However, the direct band gap in a narrow spectrum and the low absorption of atomically thin flakes weaken the prospect for light-harvesting applications. Here, we developed an efficient approach to enhance the performance of a ReS-based phototransistor by coupling CdSe-CdS-ZnS core-shell quantum dots.

Chemical Vapor Deposition Growth of Degenerate p-Type Mo-Doped ReS Films and Their Homojunction.

Substitutional doping of transition metal dichalcogenide two-dimensional materials has proven to be effective in tuning their intrinsic properties, such as band gap, transport characteristics, and magnetism. In this study, we realized substitutional doping of monolayer rhenium disulfide (ReS) with Mo via chemical vapor deposition. Scanning transmission electron microscopy demonstrated that Mo atoms are successfully doped into ReS by substitutionally replacing Re atoms in the lattice.

Increased long noncoding RNA SNHG20 predicts poor prognosis in colorectal cancer.

Background: Long noncoding RNAs (lncRNAs) have been suggested to be involved in the development and progression of malignancies. However, the investigation of small nucleolar RNA host gene 20 (SNHG20) on cancer progression remains unknown. The present study aims to explore the clinical significance of SNHG20 and its potential molecular mechanism in colorectal cancer (CRC).

miR-9 Modulates Osteosarcoma Cell Growth by Targeting the GCIP Tumor Suppressor.

Osteosarcoma is the most common primary bone tumor in humans, especially in childhood. However, the genetic etiology for its pathogenesis remains elusive. It is known that microRNAs (miRNAs) are involved in the development of tumor progression.

[Analysis on HIV infection status of voluntary blood donors in Chinese Nanjing area from 2003 to 2013].

This study was purposed to analyze HIV infections status among the unpaid blood donation population in Chinese Nanjing area from 2003 to 2013, to understand the HIV antibody positive and/or HIV-RNA positive population characteristics in order to provide evidence for recruiting strategy of blood donation without compensation. The whole blood samples of unpaid donors and the platelet donors were tested by ELISA, from June 2010 the NAT test was added for the samples that were ELISA test with unilateral negative. Every HIV reactive sample (HIV-antibody and/or HIV-RNA) was sent to confirm in the Centers for Disease Control and Prevention in Nanjing, including 1 case of enzyme bilateral positive and HIV-RNA reactivity has been sentenced as indeterminacy; another 1 case of enzyme bilateral negative and HIV-RNA reactive was sent to the Centers for Disease Control and Prevention in Jiangsu Province to test nucleic acid quantification to be positive; The unpaid donor HIV screening results from 2003 to 2013 in Chinese Nanjing area were analysed statistically.

[Infection status of HBV, HCV and HIV in voluntary blood donors of Chinese Nanjing area during 2010-2013].

This study was purposed to understand the infection of HBV, HCV, HIV among the voluntary blood donors and the epidemic trend in infectious population in Chinese Nanjing area, and to guide the mobilization and recruitment of blood donors. A total of 199777 whole blood samples of voluntary blood donors were tested by ELISA, the nucleic acid technology (NAT) combined detection (HBV-DNA, HCV-RNA, HIV-RNA) was added for detection of the samples with HBsAg,anti-HCV, anti-HIV at least unilateral negative donors from June 10, 2010 to June 9, 2013 years, and these statistic data were analyzed. Every HIV reactive sample(HIV-antibody and/or HIV-RNA) was sent to be confirmed in the Centers for Disease Control and Prevention in Nanjing.

Biomechanical analysis of four types of internal fixation in subtrochanteric fracture models.

Objective: To compare the biomechanical properties of four types of internal fixation (proximal femoral nail [PFN], dynamic hip screw [DHS], dynamic condylar screw [DCS], and proximal femoral locking plate [PFLP]) for different types of subtrochanteric fractures.

Methods: Thirty-two antiseptic femurs were randomly divided into four groups. After internal fixation had been implanted, different types of subtrochanteric fracture models were produced and each tested under vertical, torsional and vertical damage loads.

[Biomechanical study on open fracture model with plate fixation compared with closed fracture model with intramedullary nail fixation in rats].

Objective: To compare biomechanical effect of the closed fracture model with intramedullary nail fixation and the open fracture model with plate fixation in rats.

Methods: Forty 8-week-old Spragu-Dawley male rats were divided into two groups randomly. Left femoral shaft closed fractures model was created in 20 rats, and treated with intramedullary nail.

Qualitative evidence from a systematic review of prognostic predictors for surgical outcomes following cervical ossification of the posterior longitudinal ligament.

Ossification of the posterior longitudinal ligament (OPLL) is a pathological ectopic ossification of this ligament that usually occurs in the cervical spine. For patients with cervical OPLL and neurological symptoms, surgical intervention is necessary but not always effective. Various prognostic factors influence the surgical outcome.

Risk factors for new vertebral compression fractures after percutaneous vertebroplasty: qualitative evidence synthesized from a systematic review.

Study Design: Methodological systematic review.

Objective: To identify the risk factors for new vertebral compression fractures (VCFs) in patients after percutaneous vertebroplasty (PVP) and to grade the evidence according to the quality of included studies.

Summary Of Background Data: PVP is an effective procedure for the treatment of VCFs.

A methodological, systematic review of evidence-based independent risk factors for surgical site infections after spinal surgery.

Objective: To identify the independent risk factors, based on available evidence in the literature, for patients developing surgical site infections (SSI) after spinal surgery.

Methods: Non-interventional studies evaluating the independent risk factors for patients developing SSI following spinal surgery were searched in Medline, Embase, Sciencedirect and OVID. The quality of the included studies was assessed by a modified quality assessment tool that had been previously designed for observational studies.

A novel platelet glycoprotein Ib-binding protein with human platelet aggregation-inhibiting activity from Trimeresurus jerdonii venom.

Platelet glycoprotein Ib (GPIb) is a primary adhesion receptor and involved in platelet-related disorders. However, it is difficult to study GPIb-specific platelet stimulation using physiological ligands in vivo. GPIb-binding snake C-type lectins (snaclecs) are useful tools for exploring GPIb in vitro because they act on platelets differently.