Passively Q-switched 976-nm monolithic ytterbium fiber laser with 4-W power.

We developed a 915-nm pumped, passively Q-switched 976-nm ytterbium all-fiber laser with an average output power of 4.3 W. The laser utilizes a 16-cm Yb gain fiber, passively Q-switched by a 1.

Laparoscopic D2+ lymph node dissection in patients with obesity and gastric cancer: A retrospective study.

D2 lymph node dissection is widely used in laparoscopic radical gastrectomy for gastric cancer, and its efficacy and safety are known for patients with obesity. Currently, D2+ lymph node dissection is also applied to certain patients with gastric cancer of later stages. Due to the high difficulty of D2+ surgery, it is more challenging to perform on patients with obesity.

Realization of a compact 10-W 976-nm ytterbium-doped all-fiber laser.

We have demonstrated a compact and cost-effective ytterbium-doped all-fiber laser operating at 976 nm. By utilizing a commercially available ytterbium-doped fiber with a length of only 18 cm, we achieved a lasing power of 10.3 W, with a slope efficiency of 25.

Analysis of Prevention and Treatment of Anastomotic Leakage after Sphincter-Preserving Surgery for Middle- and Low-Grade Rectal Cancer under Laparoscopy.

Background: Anastomotic leakage is one of the most serious complications that can occur after laparoscopic-assistedsphincter-preserving surgery for middle- and low-grade rectal cancer.

Objectives: To explore the cause, prevention, and treatment of anastomotic leakage after sphincter-preserving surgery for middle- and low-grade rectal cancer under laparoscopy.

Methods: The clinical data from patients with mid- and low-grade rectal cancer who underwent laparoscopic-assistedanus-preserving surgery in the anorectal surgery department of our hospital have been analyzed.

Simulation for efficiency improvement of a thuilium Q-switched ytterbium-doped all-fiber laser.

We theoretically explore the mechanism in a thulium -switched ytterbium-doped all-fiber fiber laser using a set of rate equations to model the correlations between the photons and the five energy levels of thulium involved in the switching mechanism. We demonstrate that by coupling with a gain-switched resonator, the -switched laser is stabilized up to the maximum pulsing rate that is limited by the lifetime of level . To the best of our knowledge, this is the first study that revealed that level plays an essential role in reinitialization, achieving sequential pulses, and limiting the maximum repetition rate.

Regulatory effect of miRNA 320a on expression of aquaporin 4 in brain tissue of epileptic rats.

Objective: To study the expression of miRNA 320a in the brain tissue of epileptic rats and analyze its effect on the expression of aquaporin 4 (AQP4).

Methods: All rats were performed with the intraperitoneal injection of lithium chloride (3 mmol/kg) and then the intraperitoneal injection of pilocarpine (30 mg/kg) 24 h later (injected twice) to prepare the epileptic model of Wistar rats. Rats in the control group were injected with the equal volume of normal saline.

Hand-assisted laparoscopic total gastrectomy with regional lymph node dissection for advanced gastric cancer.

Background And Objectives: Laparoscopic-assisted distal gastrectomy has been applied to the treatment of gastric cancer. However, there have been few reports on the laparoscopic-assisted total gastrectomy for advanced gastric cancer, mainly because of the difficulty of the procedure.

Methods: Here, we report a series of cases where the hand-assisted laparoscopic total gastrectomies with regional lymph node dissection were performed successfully.

[Systematic reviews of mini-invasive surgery versus standard approaches for total knee arthroplasty].

Objective: To conduct a systematic review to compare the early efficacies of minimally invasive surgery (MIS) versus conventional approaches in TKA (total knee arthroplasty).

Methods: Randomized controlled trials (RCTs) and clinical controlled trials (CCTs) were retrieved from the databases of MEDLINE (1996.6 - 2010.

[Systematic review of anterior versus posterior surgical treatments of thoracolumbar fractures].

Objective: To evaluate the effectiveness of anterior versus posterior surgical treatments of thoracolumbar fractures.

Methods: Randomized controlled trials (RCTs) and clinical controlled trials (CCTs) were identified from MEDLINE (1966 - 2006.7), EMBASE (1966 - 2006.

[Reversal of multidrug resistance in drug-resistant cell line EAC/ADR by cepharanthine hydrochloride and its mechanism].

Aim: To investigate the correlation between reversal effect of cepharanthine hydrochloride (CH) on multidrug resistance (MDR) in drug-resistant cell line EAC/ADR and the nuclear transcription factor-KB (NF-KB).

Methods: Cytotoxicity was determined by the tetrazolium (MTT) assay in vitro. An EAC/ADR cell homograft model was established to investigate the effect of CH on reversing MDR in vivo.