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It is controversial whether there is a different risk of recurrence between two histological subtypes in craniopharyngioma (CP) patients. Some reported that adamantinomatous craniopharyngioma (ACP) had a higher risk of recurrence than papillary craniopharyngioma (PCP), but others reported that there is no significant difference between them. So, we conducted this systematic review and meta-analysis to determine the association between the histological subtype of CP and the rate of recurrence. A comprehensive literature search was undertaken in PubMed, EMBASE, and Web of Science for all English articles published up to November 2020. Recurrence data stratified by ACP and PCP were extracted from studies meeting inclusion criteria. A pooled analysis of the association between the histological subtype of craniopharyngioma and rates of recurrence was performed. Thirteen articles containing 974 patients were included. When stratified by two pathological subtypes, the total recurrence rate of ACP was 26.0% and PCP was 14.1%, which showed ACP associated with a higher risk of tumor recurrence than PCP (odds ratio [OR] = 2.12, 95% confidence interval [CI] = 1.36, 3.30, P = 0.00). This is the first meta-analysis focusing on histological subtypes of CP. PCP associates with a lower risk of recurrence than ACP, indicating that ACP could act as one of recurrence risk factors for CP patients. Nevertheless, large sample size and well-designed multicenter studies in which the other clinical variables are controlled to determine the histological subtype of CP as an independent recurrence risk factor are needed.

Purpose: To report a rare complication that Onyx gel blocked the MCA trunk and branches unexpectedly during AVM embolism and our strategy to rescue. Material and methods: A 16 years old otherwise healthy girl hold a left side Spetzler - Martin grade III fronto-temporal AVM, during embolization, the L-MCA and its branches were blocked by Onyx completely, the patient was transferred to the operating room to extract the Onyx gel immediately. Result: After totally 10 arterotomies, all the Onyx gel were removed. 8 hours after occlusion, all arteries were then seen to pulsate. Conclusion: Iatrogenic MCA full-length acute occlusion is a rare and severe complication during AVM embolism. Carefully identify the feeding arteries, micro-catheter angiography before Onyx gel injection and balloon-assisted embolism could probably prevent it. Surgical operation to extract onyx gel and re-canalize MCA was recommended, AVM should be resect if possible.

The fluctuation of wind power may easily cause the great impact on the grid while it was integrated in the grid in large scale, and resulted in the generally existed phenomenon of abandoned wind power and power brownouts accordingly. Aiming to such problem the academic circles have proposed the method of hydrogen production to consume the excessive wind power. In this paper, with the consideration of the power supply scheme for micro grid, it aims to enable the wind power better providing power for hydrogen production, and designs its structure according to the working principles of each module, and completes the system modeling of such micro grid based on Dig SILENT Power Factory software and carries out the flow analysis on such model and simulation of power control model, it proves that this system can be run stably theoretically.

Based on the experimental study of shear strengthened of reinforced concrete rectangular beam strengthened by high-strength steel wire mesh and polymer mortar , the finite element extended analysis was used. The finite element analysis software showed that with the increasing of the strand dosage and reinforcement strand length,the shear strength and stiffness of strengthened members improved . However,with the increasing of shear span ratio , the shear strength and stiffness reduced obviously .

The purpose of the paper is to simulate stress distribution of flexural members which is reinforced with CFRP with secondary load using ANSYS, so the flexural performance the beams containing with same layer of CFRP which is affected by different torque can be studied. As a result, the comparison of the stiffness and deflection of beams influenced by different load history (with initial load or not) and different layers of CFRP in this paper will provide guidance for project.