Rethinking Conservation and Restoration Strategies of Endangered and Key Medicinal Plants in Yunnan-Kweichow Plateau's Karst Areas Under Climate Change.

The species, valued for their pharmaceutical, ornamental, and economic importance, exhibit notable rarity and endemism in the Karst areas of the Yunnan-Kweichow Plateau in China. These species face significant threats from habitat loss and fragmentation, leading to a decline in biodiversity. To mitigate these threats, the Maxent algorithm was employed to analyze current and future distribution patterns, with a particular focus on the influence of climate variables in predicting potential distribution shifts and assessing extinction risks under the optimistic SSP1-2.

Soft nanoforest of metal single atoms for free diffusion catalysis.

Metal single atoms are of increasing importance in catalytic reactions. However, the mass diffusion is yet substantially limited by the confined surface of the support in comparison to homogeneous catalysis. Here, we demonstrate that cylindrical micellar brushes with highly solvated poly(2-vinylpyridine) coronas can immobilize 33 types of metal single atoms with 8.

The predictive value of prostate spherical volume ratio in lower urinary tract symptoms and clinical progression of benign prostatic hyperplasia: a retrospective cohort study.

Purpose: To evaluate the predictive value of Prostate Spherical Volume Ratio for Lower urinary tract symptoms and clinical progression of Benign prostatic hyperplasia. And compared with other prostatic anatomical parameters.

Methods: A total of 154 patients with Benign prostatic hyperplasia who underwent MRI and urodynamics were included in the study, while prostate anatomical parameters such as prostate spherical volume ratio, prostate volume, intravesical prostatic protrusion, prostatic urethral length and presumed circle area ratio were determined based on MRI measurements.

Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing.

A novel balloon-type photoacoustic cell (BTPAC) is proposed to facilitate the detection limitations of acetylene (CH) gas achieving ppb level. Here, an ellipsoidal photoacoustic cavity is employed as the platform for gas-light interaction. By strategically directing the excitation source towards the focal point of the ellipsoidal cavity, ensuring its trajectory traverses the focal point upon each reflection from the interior walls.

Particle Trajectory Simulation Facilitates the Development of an Efficient Sample Introduction System for Single-Particle ICP-MS Analysis.

Inductively coupled plasma mass spectrometry (ICP-MS) has demonstrated significant capabilities in the analysis of single events, such as single cells and particles. Researchers have been actively pursuing innovations in ICP-MS sample introduction systems to enhance their transport efficiency, as this is critical for ensuring the accuracy of single-event analysis. However, the majority of prior studies have relied heavily on empirical approaches, with limited attention given to the individual characteristics of particles from a theoretical perspective and a lack of efficient manufacturing tools for optimizing related components.