Optical coherence tomography guided automatic robotic craniotomy surgery platform.

A transparent craniotomy window is required for optical brain imaging; however, traditional surgical preparation requires well-trained surgeons, is time-consuming, and suffers from low success rates. To address this issue, we present an automatic craniotomy platform combining optical coherence tomography (OCT) with an automated drilling machine. The OCT provides 3D skull data to guide a homemade closed-loop high-precision drill for controlled craniotomies, achieving a 100% success rate in creating small, large, and thinned windows.

1550 Nm Optical Coherence Tomography for In Vivo Deep Brain Cerebral Blood Flow Imaging.

Employing longer wavelengths in optical microscopic imaging is recognized for its advantage in deep penetration. However, the 1550 nm spectrum band is often overlooked due to water's high absorption coefficient. This study investigates the feasibility of 1550 nm center wavelength-based optical coherence tomography (OCT) for imaging the cerebral vasculature and blood flow in the mouse brain cortex.

Changes in the Yield Effect of the Preceding Crop in the US Corn Belt Under a Warming Climate.

Crop rotation has been widely used to enhance crop yields and mitigate adverse climate impacts. The existing research predominantly focuses on the impacts of crop rotation under growing season (GS) climates, neglecting the influences of non-GS (NGS) climates on agroecosystems. This oversight limits our understanding of the comprehensive climatic impacts on crop rotation and, consequently, our ability to devise effective adaptation strategies in response to climate warming.

Diverse responses of surface biogeophysical parameters to accelerated development and senescence of vegetation on the Mongolian Plateau.

Vegetation dynamics is essential for characterizing surface biogeophysical parameters. Speeds of vegetation development and senescence are well documented, however, the effects of vegetation growth rates on surface parameters during different growth stages remains unclear. By using such methods as trend analyses and correlation analyses, this study examines the variations and interactive relationships of leaf area index (LAI) and surface parameters including Albedo, evapotranspiration (ET), and land surface temperature (LST), derived from Moderate Resolution Imaging Spectroradiometer (MODIS), during the intra-growing season (April-October, GS) on the Mongolian Plateau (MP).

Adaptive dynamic analysis-based optical coherence tomography angiography for blood vessel projection artifact suppression.

Optical coherence tomography angiography (OCTA) for blood vessel 3-D structure imaging suffers from blood vessel projection artifacts/tail artifacts when using a long decorrelation time (e.g., repeat B-scan acquisition in regular OCTA) or loss of micro vessel signal when using a short decorrelation time.

Diagnostic accuracy and safety of Dermatophagoides pteronyssinus extracts used for skin prick test.

Background: Dermatophagoides pteronyssinus is a common allergen causing allergic diseases in China. The aim of this study was to evaluate the efficacy and safety of D. pteronyssinus extracts produced by Peking Union Medical College Hospital (PUMCH) for the skin prick test (SPT) in the diagnosis of D.

Delayed Anaphylaxis to Red Meat Associated With Specific IgE Antibodies to Galactose.

A novel delayed anaphylactic reaction to red meat, associated with tick bites and IgE antibodies against galactose-α-1, 3-galactose (α-gal), was reported in 2009 in the US, Australia and Europe. In this case, serum specific IgE to galactose-α-1, 3-galactose (>100 kU/L) and IgE to multiple non-primate mammalian proteins were positive. However, the pathogenesis of this disease remains unclear.

Community structure and succession regulation of fungal consortia in the lignocellulose-degrading process on natural biomass.

The study aims to investigate fungal community structures and dynamic changes in forest soil lignocellulose-degrading process. rRNA gene clone libraries for the samples collected in different stages of lignocellulose degradation process were constructed and analyzed. A total of 26 representative RFLP types were obtained from original soil clone library, including Mucoromycotina (29.