This paper introduces some information of the electronic control system for LGJ-80 freeze dryer, including its system structure, hardware system and software system. The automatic control during overall course, automatic adjustment for degree of vacuum and antijamming are realized in this paper.

Toll-like receptor (TLR) is an important pattem recognition receptor (PRR) which partici pates in innate immunity and regulates adaptive immunity.TLR can be expressed in immune cells and malig nant tumors recognize conservative molecular structure,mediate response of inflammation,tissue injury and repair,which plays an important role in the process of tumor.Research results about some molecules and signal pathways of TLR demonstrate that it can act anti or pro-tumor dual functions,which has an extensive prospects in prevention and treatment of tumor.

Objective To assess the safety and efficacy of percutaneous nephrolithotripsy withpneumatic and ultrasonic power in pediatric renal calculi. Methods The clinical data of 44 patientstreated with combination of pneumatic and ultrasonic power during pereutaneous nephrolithotripsywere retrospectively analyzed. The 44 patients had 49 renal calculi. The patients were all under 14years old. The average age was 11 years (range 7-14 years). There were 39 unilateral and 5 bilateralcalculi. Among the 44 patients,metabolic disturbance occurred in 19 cases (43.2%),anatomical dys function occurred in 15 cases (34.1%),urinary tract infection occurred in 14 cases (31.8%). Ante grade percutaneous access was established under ultrasound guidance,a combination of pneumatic andultrasonic lithotripsy were used. The effect was evaluated by postoperative KUB and ultrasonic. Re suits The access was successfully established in all patients. Complete stone clearance was achievedin 36 kidneys in phase Ⅰ,stones from 9 kidneys were completely removed with second lithotripsy.Leftover stone in 2 kidneys were treated by ESWL. Open surgery was performed in 2 kidneys due toexcessive bleeding. The operative time ranged from 52 132 min,average time was 79 min. Two pa tients needed blood transfusion. No severe complications occurred in all patients. Thirty seven pa tients were followed up for 3 18 months. The renal function was not worsened and hydronephrosiswas not aggravated in these patients. Conclusion The percutaneous nephrolithotripsy with pneumatic and ultrasonic power is a safe,effective treatment for pediatric renal calculi.

Objective To investigate the feasibility of coronary CT angiography in single cardiac cycle and to analyze the image quality and radiation dose in patients with high heart rate(HR) using 256-row detector CT. Methods Ninety-two consecutive patients between October and November 2015 who were suspected coronary artery disease underwent coronary CT angiography(CCTA) were enrolled, which was performed with a 256-row detector CT(Revolution CT, GE Healthcare) using prospective ECG-triggered volume CCTA within a single cardiac cycle with snapshot freeze(SSF) technique. The patients were grouped by HR during CT scans: group A(80—89 bpm, n=56), group B(90—99 bpm, n=20), and group C(≥100 bpm, n=16). Image quality was compared before and after using SSF technique reconstructions in seventy-four patients. The image quality of coronary artery was evaluated blindly by 2 experienced radiologists using a four-point scale based on the 18-segment model according to the Society of Cardiovascular Computed Tomography guidelines. The differences in age, body mass index, heart rate and CT dose index volume,effective dose(ED) among the three groups were compared by using ANOVA analysis or Kruskal-Wallis test, the image quality and interpretability using χ2 test. Comparisons of image quality between standard and SSF were performed with paired Wilcoxon rank sum test. Kappa coefficient was used to test inter-observer agreement. Results A total of 1 065 coronary artery segments, 98.97%(1 054/1 065) met the requirements for diagnosis. No significant difference was found(χ2=1.274, P=0.563) for the diagnostic image quality of coronary artery segments among the 3 groups with 98.64%(651/660), 99.57%(232/233), 99.42%(171/172), respectively. Significant difference(χ2=68.811, P<0.05) was found for diagnostic image quality before and after using SSF with increase from 90.29%(772/855) to 99.44%(881/886). Image quality was improved with the use of SSF reconstructions and the diagnostic segments were also increased. The median of ED for group A, B and C was 2.03, 1.93, 2.37 mSv, respectively. There was no significant difference in ED among group A, B and group C(H=2.412,P>0.05). Conclusions Single cardiac cycle scan is feasibility for coronary CT angiography in patients with high heart rate using 256-row detector CT. This scan mode can maintain the diagnostic image quality with low radiation dose. SSF technique can improve the image quality.

OBJECTIVE: To investigate the expression levels of Toll-like receptor 2 (TLR2) in laryngeal squamous cell carcinoma (LSCC) tissue and the adjacent normal epithelial tissue. METHOD: Reverse transcriptase-polymerase chain reaction(RT-PCR) and Western-blot were used to detect the expression of TLR2 mRNA and protein levels in the tumors and adjacent normal epithelial tissues in 22 patients with LSCC, while vocal cord polyps were used as control. RESULT: RT-PCR demonstrated that TLR2 mRNA expressed obviously in both of tumor and adjacent tissue, but rarely in control. The expression levels of TLR2 mRNA in tumor is higher than that in adjacent normal epithelial tissue (t=4.279, P<0.01). It's expression intensity was closely related to LSCC clinical stage (F=5.496, P<0.05)and lymph node metastasis status (N stage of tumor) (F = 4.271, P<0.05). The protein levels of TLR2 were consistent with mRNA expression. CONCLUSION Both mRNA and protein levels of TLR2 were obviously elevated in LSCC, which were associated closely with tumor clinical stage and lymph node metastasis. It is indicated that TLR2 may play an important role by multiple mechanism in laryngeal carcinoma process.
Adult ; Female ; Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Neoplasm Staging ; Toll-Like Receptor 2 ; metabolism