Low temperature methanation of CO over an amorphous cobalt-based catalyst.

CO methanation is an important reaction in CO valorization. Because of the high kinetic barriers, the reaction usually needs to proceed at higher temperature (>300 °C). High-efficiency CO methanation at low temperature (<200 °C) is an interesting topic, and only several noble metal catalysts were reported to achieve this goal.

A Novel XGBoost Method to Infer the Primary Lesion of 20 Solid Tumor Types From Gene Expression Data.

Purpose: Establish a suitable machine learning model to identify its primary lesions for primary metastatic tumors in an integrated learning approach, making it more accurate to improve primary lesions' diagnostic efficiency.

Methods: After deleting the features whose expression level is lower than the threshold, we use two methods to perform feature selection and use XGBoost for classification. After the optimal model is selected through 10-fold cross-validation, it is verified on an independent test set.

Gitelman syndrome in pregnancy: a case series.

Objective: To evaluate maternal and fetal outcomes in women with Gitelman syndrome (GS).

Methods: Retrospective analysis of the clinical data of five patients with the clinical diagnosis of GS during pregnancy, who were admitted to Beijing Shijitan Hospital, Capital Medical University between 2013 and 2019, was conducted.

Results: Five women with GS during pregnancy who finally gave birth to a total of eight newborns have been included.