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Objective To evaluate the clinical outcomes and complications of posterior spinal fusion surgery in the treatment of neurofibromatosis type 1(NF1)thoracolumbar kyphoscoliosis, and to explore the mode of perioperative care for nurses provided to the patients. Methods We used the retrospective analysis on the 134 patients with NF1 thoracolumbar kyphoscoliosis admitted to our department from March 2012 to April 2022 and analyzed the clinical outcomes and perioperative complications by using the related statistics. We evaluated the Perioperative care by the nurses in the treatment of NF1 to explore the mode of nursing to the patients with the NF1, by using specific observation points and evaluation indicators. Results NF1 kyphoscoliosis patients had poor preoperative nutritional status and lung function. NF1 kyphoscoliosis underwent longer operation time, lost more blood in operation, had higher osteotomy grade and more postoperative complications. All the patients successfully completed the operation in our group. The correction rate of scoliosis was (52.8±22.7)%, and the correction rate of kyphosis was (57.3±34.6)%. 25 patients had complications but no such serious complications as nerve damage. Conclusions The practice of the perioperative nursing to NF1 type scoliosis patients facilitates the shortening of the recovery period, the prevention or timely detection of complications, and improvement of the therapeutic effect.

This article reported the treatment of Gorham Stout syndrome (GSS) with kyphoscoliosis. The patient was an 11-year-old male who was presented with kyphoscoliosis, first developed 4 years ago, accompanied by incomplete paralysis of both lower limbs. The syndrome worsened in the previous year. He had a history of chylothorax, ventilation dysfunction, and osteoporosis. The patient underwent skull traction in another hospital for 7 months, which was ineffective. Finally, he underwent posterior correction, internal fixation, and bone graft fusion (C4-T8) in our hospital. The postoperative clinical outcomes and the posterior correction were satisfactory, with significant improvement in incomplete paralysis of both lower limbs. This article aims to improve the understanding of GSS and provided reference for its diagnosis and treatment through a typical case report and review of previous literature.

In order to study the pore structure and fractal characteristics of high-rank intact coal and tectonic coal, the selected coal samples were studied by mercury intrusion method and low pressure N2 adsorption method and low pressure CO2 adsorption method. The pore size distribution, pore volume and specific surface area, pore shape and connectivity, and fractal dimension differences between intact coal and tectonic coal were compared. The results show that tectonic coal is dominated by open pores and has better connectivity than intact coal. The sum of their Dubinin-Radushkevic（Ｄ-Ｒ） and micropore specific surface area of both intact coal and tectonic coal accounts for more than 99% of the total specific surface area, thus providing more space for gas adsorption. Moreover, the larger pore volume and specific surface area of tectonic coal result in its high gas content. The seepage pores of tectonic coal are simple, the adsorption pores have low pore structure complexity, and the pore surface is relatively smooth, which improves the gas migration ability in the pores.

Mach–Zehnder interferometers (MZIs) integrated with phase‐change materials have attracted great interest due to their low power consumption and ultra‐compact size, which are favored for reconfigurable photonic processors. However, they suffer from a low optical extinction ratio and limited switching cycles due to high material loss and poor reversible repeatability caused by material degradation. Here a non‐volatile electrically reconfigurable 2 × 2 MZI integrated with a low‐loss phase‐change material Sb2Se3 encapsulated in Al2O3 layers is demonstrated. The phase change is electrically actuated by a forward‐biased silicon p‐i‐n diode. The switch extinction ratio is more than 20 dB due to the low‐loss Sb2Se3‐based phase shifter. By dividing the Sb2Se3 patch into small sub‐cells to restrict the material reflow, more than 10 000 reversible phase‐change cycles and 6‐bit multilevel switching states are achieved by programming the electrical pulses. Its non‐volatility, high endurance, and fine‐tuning capability makes the device promising in large‐scale low‐power reconfigurable photonic processors. [ABSTRACT FROM AUTHOR]