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In this paper, the projection method, the stereographic method and the spherical map method are used to calculate the spatial angle of the parts with the oblique hole in the numerical control machining center. At the same time, the calculation principle and method of the spatial double deflection angle hole system in the numerical control machining center are studied.The projection method is used to analyze the spatial angle relation of Φ10 holes in milling. V spherical method and H spherical method are used to calculate the positioning angle and the orientation angle. The spatial angle of a valve body part in milling Φ12 space inclined hole is calculated by using the stereographic method, and the positioning angle and the orientation angle are calculated by using the V spherical graph method and the H spherical graph method.The calculation results show that the spatial angles obtained by the above methods are the same, which verifies the correctness and the feasibility of the calculation method. [ABSTRACT FROM AUTHOR]

Acute kidney injury (AKI) is a common complication after lung transplantation (LTx) which is closely related to the poor prognosis of patients. We aimed to explore potential risk factors and outcomes associated with early post-operative AKI after LTx. A retrospective study was conducted in 136 patients who underwent LTx at our institution from 2017 to 2019. AKI was defined according to the Kidney Disease: Improving Global Outcomes (KDIGO) guideline. Univariate and multivariate analyses were conducted to identify risk factors related to AKI. The primary outcome was the incidence of AKI after LTx. Secondary outcomes were associations between AKI and short-term clinical outcomes and mortality. Of the 136 patients analyzed, 110 developed AKI (80.9%). AKI was associated with higher baseline eGFR (odds ratio (OR) 1.01 (95% confidence interval (CI): 1.00–1.03)) and median tacrolimus (TAC) concentration (OR 1.15 (95% CI: 1.02–1.30)). Patients with AKI suffered longer mechanical ventilation days (p =.015) and ICU stay days (p =.011). AKI stage 2–3 patients had higher risk of 1-year mortality (HR 16.98 (95% CI: 2.25–128.45)) compared with no-AKI and stage 1 patients. Our results suggested early post-operative AKI may be associated with higher baseline eGFR and TAC concentrations. AKI stage 1 may have no influence on survival rate, whereas AKI stage 2–3 may be associated with increased mortality at 1-year. [ABSTRACT FROM AUTHOR]

The basic principle and procedure which is using the stereoscopic geometry, spherical surface method and projection method to solving the spatial bidirectional deflection angle are described in this paper. Respectively, it is using the above three methods to solve the positioning deflection angle of the space double angle in the adjustable modular fixture, through the typical examples, it calculates the positioning angle and the orientation angle of different kinds of parts which are positioning in the modular fixture; It is also to design a set of modular fixture which is suitable for space double angle with drilling and milling jig, the other is suitable for rotary space angle with milling modular fixture, there are suitable for all kinds of parts that can adjusting the space double angle, it is solving the positioning and clamping problems of the similar parts in the processing and it is satisfied to the requirement of NC machining. [ABSTRACT FROM AUTHOR]