Environmental compensation of laser interferometer based on particle swarm algorithm.

A dual-frequency laser interferometer is an important instrument that can provide a meter-level measurement range with nanometer-level measurement accuracy at several meters per second measurement speed. The measurement accuracy of the dual-frequency laser interferometer plays a vital role based on laser wavelength, which is easily affected by environmental factors, so the air refractive index needs to be corrected. In this paper, an improved Edlen empirical formula air refractive index compensation method is introduced, in which a particle swarm optimization algorithm is used to optimize the Edlen formula by adjusting the compensation model online according to the compensation effect to adapt to different environmental conditions.

Prognostic role of SPRY4-IT1 in female breast carcinoma and malignant tumors of the reproductive system: A meta-analysis.

Background: The prognostic value of SPRY4-Intronic transcript 1 (SPRY4-IT1) in women suffering from breast carcinoma and malignant tumors of the reproductive system remains to be ascertained. Therefore, this paper attempted to assess the relationship between SPRY4-IT1 with the clinicopathological indicators and survival analysis in women suffering from breast carcinoma and malignant tumors of their reproductive organs through meta-analysis.

Method: Related literature retrieved from Cochrane Library, Ovid, Embase, PubMed, the CNKI, and the Web of Science databases were reviewed.

Clinicopathological significance of epidermal growth factor receptor expression in papillary thyroid carcinoma: a meta-analysis.

Introduction: This study aimed to determine the relationship between the expression of epidermal growth factor receptor (EGFR) and pathological indicators in papillary thyroid carcinoma (PTC).

Evidence Acquisition: PubMed, Embase, Web of Science, MEDLINE, and Cochrane Library databases were searched for relevant clinical trials. The odds ratio (OR) and 95% confidence interval (CI) showed the effect magnitude of the expression of EGFR, age, gender, tumor size, lymph node metastasis (LNM), extrathyroid extension, and tumor, lymph node, metastasis) stage.

[The expression and significance of programmed cell death 5 and Bcelllymphoma/lewkmia-2 in sinonasal squamous cell carcinoma].

Objective: To explore the expression and significance of programmed cell death 5 (PDCD5) and Bcelllymphoma/lewkmia-2(Bcl-2) in sinonasal squamous cell carcinoma (SNSCC).

Method: Immunohistochemical method and Western Blot method was used to determine the expression of PDCD5 and Bcl-2 in specimen of SNSCC in thirty cases, sinonasal inverted papillomas (SNIP) in thirty-eight cases, and normal nasal mucosa in twenty cases.

Result: (1) The expression of PDCD5 protein in SNSCC significantly decreased compared with SNIP and normal nasal mucosa.