Intraoperative changes of surgical approach and a second surgery after percutaneous endoscopic surgery for lumbar spinal stenosis.

Objective: To investigate the reasons for a second surgery after Percutaneous Endoscopic Surgery (PES) for lumbar spinal stenosis and to provide references for the choice of indications and appropriate surgical approach.

Method: A total of 426 patients received PES for lumbar spinal stenosis. The postoperative, intraoperative, and postoperative data of the subjects were analyzed.

Construction and Preparation of the Novel ADN/CL-20 Cocrystal via Directional Hydrogen Bonding Design for Turning Hygroscopicity.

Ammonium dinitramide (ADN), as a novel and environmentally friendly oxidizer, has strong hygroscopicity when exposed to high-humidity air, which seriously hinders its application in solid propellants. Modification of oxidizers by cocrystallization is an effective strategy to improve the hygroscopicity of energetic components. In this paper, the theoretical simulation of ADN/CL-20 cocrystals was developed via a directional hydrogen bonding design to establish a cocrystal with improved hygroscopicity.

[Effects of tramadol hydrochloride preemptive analgesia in kyphoplasty of thoracolumbar osteoporotic fractures under local anesthesia].

Objective: To explore preemptive analgesic effect of preoperative intramural tramadol injection in percutaneous kyphoplasty (PKP) of vertebrae following local anesthesia.

Methods: From August 2019 to June 2021, 118 patients with thoraco lumbar osteoporotic fractures were treated and divided into observation group and control group, with 59 patients in each gruop. In observation group, there were 26 males and 33 females, aged from 57 to 80 years old with an average of (67.

The association between parenteral nutrition and pancreatic injury in adult patients: a retrospective observational study.

Background And Objective: Patients on parenteral nutrition (PN) are at high risk of both liver and pancreatic injury. More efforts were focused on liver, however, limited data is available to evaluate the effects of PN on pancreas. Thus, we performed a retrospective observational study to evaluate the association between PN and pancreatic injury in Chinese adult patients.

Automatic digital optical heterodyne phase locking loop in the milliradian domain for spaceborne laser interferometry.

We developed a digital optical phase locking loop (OPLL) with three advantages, including high precision of phase locking, high control bandwidth up to 2.8 MHz, and automatic laser locking strategy. Spaceborne laser interferometers will be used to measure tiny displacements caused by gravitational waves in millions of kilometers range.

PoDPBT, a BAHD acyltransferase, catalyses the benzoylation in paeoniflorin biosynthesis in Paeonia ostii.

PoDPBT, an O-benzoyltransferase belonging to the BAHD family, can catalyze the benzoylation of 8-debenzoylpaeoniflorin to paeoniflorin. PoDPBT is the first enzyme demonstrated to be involved in the modification stage of paeoniflorin biosynthesis. DFGGG, a new DFGWG-like motif, was revealed in the BAHD family.

Molding fabrication of copper azide/porous graphene with high electrostatic safety by self-assembly of graphene oxide.

In the wake of the development of micro-initiation systems, traditional lead-based primary explosives hardly satisfy the needs of high energy output. Copper azide (CA), one of the most promising primary explosives, is restricted in practical applications because of its high electrostatic sensitivity and the method of charge in micro-initiation systems. To tackle these issues, two synthetic paths of CA based on a porous graphene skeleton are proposed.

Crystalline Multi-Metallic Compounds as Host Materials in Cathode for Lithium-Sulfur Batteries.

Lithium-sulfur (Li-S) battery is one of the most promising next-generation rechargeable batteries. Lots of fundamental research has been done for the problems during cycling like capacity fading and columbic efficiency reducing owing to severe diffusion and migration of polysulfide intermediates. In the early stage, a wide variety of carbon materials are used as host materials for sulfur to enhance electrical conductivity and adsorb soluble polysulfides.

Modified Broström Repair With and Without Augmentation Using Suture Tape for Chronic Lateral Ankle Instability.

Objective: To compare the clinical and radiological outcome between the modified Broström repair with augmentation using suture tape (MBA) and the modified Broström repair (MB) for patients with chronic lateral ankle instability.

Methods: A retrospective study was performed in Ningbo No. 6 Hospital.

Fluorination observed T increase of 110 K is challenging the hydrogen-deuterium isotope effect.

The significant Tc enhancement of 110 K in [N-fluoromethyldabconium] triiodide lead caused by the promising design of H/F substitution is the first and unprecedented, opening up an applicable and universal strategy to effectively regulate the Tc working temperature in phase transition materials.

[Characteristics of Disinfection By-products and Genotoxicity During Drinking Water Disinfection with Potassium Monopersulfate Compound Powder].

The qualitative analysis for by-products in the course of disinfection of the raw water and the effluent of GAC in Beijing Tiancuishan Drinking Water Treamtment Plant by potassium monopersulfate compound powder was determined. Halogen disinfection by-products during disinfection process by potassium monopersulfate compound powder was evaluated in a bench scale by comparing with chlorine disinfection process, and the genotoxicity evaluation of potassium monopersulfate compound powder and chlorine disinfection processes was also conducted by -test. The results showed that there were small changes in the organic pollutant components of water samples after disinfection by potassium monopersulfate compound powder, while some new halogen disinfection by-products were generated.