The healing of chronic wounds remains a considerable challenge in clinical trials and imposes severe financial physiological burdens on patients. Many works are being tried to find ideal promoting wound biomaterials. Small bioactive peptides with low cost easy production, store transfer become excellent candidates. Here, we identified novel peptide (named OM-LV20) from skin secretions odorous frog Odorrana margaretae. had an amino acid sequence "LVGKLLKGAVGDVCGLLPIC," contained...

The objective of this study was to use finite element models investigate the biomechanics stable thoracolumbar burst fracture repair using unilateral short-segment fixation and 4 alternate pedicle screw systems.Four posterior systems were compared for models: intermediate bilateral short fixation, long fixation. We range motion (ROM), von Mises stresses on implants, stress intervertebral discs superior inferior injured vertebra during simulated spinal movements.There no significant...

OBJECTIVE:To evaluate the correlation between severity of intervertebral disc injury and anteroposterior type thoracolumbar vertebral fractures.METHODS: Fifty-six cases fractures treated in our trauma center from October 2012 to 2013 were included this study.The classified by classification, whereas was evaluated using magnetic resonance imaging.The Spearman coefficient used analyze fractures, a w 2 test adopted measure variability different fracture types upper lower adjacent...

To investigate the relationship of muscle atrophy and fat infiltration around hip joint with areal bone mineral density (aBMD) in each subregion proximal femur.In total, 144 participants (66 women 78 men) were examined by quantitative computed tomography (QCT), femoral neck (FN), trochanter (TR), intertrochanter (IT) femur obtained. The cross-sectional area (CSA) proton fraction (PDFF) gluteus maximus (G.MaxM), medius (G.MedM), minimus (G.MinM), iliopsoas (IliopM) obtained via magnetic...

A novel Medium Voltage Direct Current (MVDC) circuit breaker consisting of a High-Speed Switch(HSS) and bridge-type commutation branch, which is based on current injection, proposed analyzed in this paper. The branch design adopts bridge type, can break bidirectional fault rapidly by controlling thyristors. Meanwhile, after commutated to the completely, freewheeling diodes provide time for dielectric recovery with zero voltage across HSS, improve reliability breaking. principle operation...

The cartilage endplate plays an important role in the stress distribution and nutrition metabolism of intervertebral disc. healing morphology after spinal fracture its effect on disc degeneration are still unclear.This was a retrospective study. Patients with traumatic single-level thoracolumbar fractures treated our orthopedic trauma service center from June 2011 to May 2019 were included relevant data collected medical records. Based combined computed tomography MRI images, injury status...

In recent years, the construction of Hercynian economic zone has been significantly paid attention by central government, as a whole developed rapidly, while condition competition and unbalanced development in different zones also appeared, become major obstacle for more healthy zone. Based on this background, article uses knowledge game theory to explore relationships between interest subjects zone, find out best model which all stakeholders can get maximum interests, then propose some...

Objective To compare the biomechanical properties of single‐ and two‐segment fusion for D enis type B spinal fracture. Methods Two female patients with L 1 vertebral fractures were studied. Both had achieved intervertebral by year postoperatively, at which time CT data collected, including one patient before after removal pedicle screws another whose not removed. The imported into M imics software T 11 ‐ 2 three dimensional models established. After construction models, they ANSYS software....

To determine the sensitivity and specificity of 640-Multislice CT (640-MSCT) in diagnosing female UD.We investigated 16 patients with symptomatic UDs preoperatively our hospital from August 2010 to March 2016. The patients' average age was 38.8 years. All were performed 640-MSCT pelvis; then, 3D 4D images reconstructed preoperatively.In 4D-CT images, out patients, thirteen had one ostium, two 2 ostia 3 ostia. Out those eight located at 5 o'clock five 7 o'clock. Patients location 6 o'clock,...

Cannulated screw fixation is widely used in the treatment of femoral neck fractures. During surgery, we often face situation that a guide wire needs to be adjusted because poor positioning neck. It difficult adjust direction femur due its elasticity. This study developed practical technique correct position. When insertion has deviated, first, measure length wire. Second, select appropriate cannulated based on measurement, and along Ward's triangle. Then return front screw. At this time, can...

The present study aimed to explore the application of 640-slice dynamic volume computed tomography (DVCT) excretory cystography and urethrography. A total 70 healthy subjects were included in study. Excretory urethrography using DVCT was conducted continuously record motions bladder proximal female male urethra. patients' voiding process divided into early, early middle, middle late, late phases. analyzed conventional CT. cross-sectional areas various sections urethra evaluated, average...

Abstract Rationale: Hallermann-Streiff syndrome (HSS) is a rare congenital disorder characterized by craniofacial malformations, sparse hair, degenerative skin changes, eye abnormalities, dental defects, and proportionate short stature. Patient concerns: A 24-year-old Chinese male patient presented to the ophthalmologist because of his sore blurred vision. Diagnoses: The final diagnosis case HSS having main features syndrome, however, associated with uncommon ocular features, ultrasound...

Autocatalysis has been recognized to be involved in the emergence of life and intrinsic biomolecular replication. Recently, an efficient template autocatalysis driven by solvent-free crystallization reported. Herein, we unveil role intermolecular hydrogen bonds formed amides crystallization-driven (CDTA), which involves autocatalytic activity, selectivity, thermal responsiveness. We found that thermal-induced cis-trans isomerization possibly affects H-bonding-mediated ability products for...

Due to the nonlinearity and uncertainty of large-scale turbine compressor systems, complex systems are often challenged by occurrence surge in practical applications. Therefore, it is great importance study anti-surge systems. In this study, based on MDSG, a method using CNN introduced identify abnormal conditions, which can effectively conditions during operation system. Then, considering complexity fuzzy control adopted conditions. Finally, identification combined with realize condition...

It is a challenging problem to differentiate obstructive hydronephrosis from noninvasive evaluation of renal pelvis and ureteral motility in patients. The purpose this study was explore the value 640-slice dynamic volume CT (DVCT) quantitative measurement upper urinary tract (UUT) pump function after acute unilateral lower obstruction pigs.In study, perfusion pig model constructed by constant pressure testing left nephrostomy. measuring devices were connected create state no part ureter....

Objective To explore the correlation between high-resolution computed tomography (HRCT) phenotype and pulmonary function in patients with chronic obstructive disease (COPD). Methods Fifty-six COPD were retrospectively evaluated using tests (PFTs) HRCT, phenotypic parameters analyzed. Results Thirty-one classified as having imaging A, 11 E, 14 M. The total lung capacity (TLC)% of E was significantly higher than that phenotypes A residual volume (RV) to TLC ratio (RV/TLC) lower forced...

The measurement result of opening and closing speed high voltage circuit breaker is an important reference to evaluate the working performance breaker. At present, methods based on machine vision technology do not consider problems camera field distortion target point tracking instability under different conditions, accuracy greatly reduced. To solve this problem, paper proposes a correction method characteristic calibration technology. parameters 220kV high-voltage have been measured for...

Pointed out that the lead wire resistance difference, quality, connection is not tight, tap switch bad contact, finger refers to a shift of position pointer and winding broken strands caused by main reason DC unbalance rate exceed in transformer, combined with actual situation, proposed corresponding solution measures.