benefits-cardiac-resynchronization-therapy-an-asynchronous-heart

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

It is now well recognized that heart failure (HF) patients with left bundle branch block (LBBB) derive substantial clinical benefits from cardiac ...

stress-distribution-during-cold-compression-rocks-mineral-aggregates

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

We report detailed procedures for performing compression experiments on rocks and mineral aggregates within a multi-anvil deformation apparatus (D-DIA) ...

influence-listen-establish-adopt-reinforce-name-strengthen-nursing-on

Influence of Listen-Establish-Adopt-Reinforce-Name-Strengthen Nursing on Nutritional Status in Older Adults with Diabetes Mellitus

Diabetes mellitus (DM) is a widespread chronic metabolic illness around the world, and prolonged hyperglycemia not only causes a variety of problems but ...

Zhongshan Hospital, Fudan University

Stony Brook University

Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University

Lead selenide, PbSe, an important lead chalcogenide semiconductor, has been investigated using in-situ high-pressure/high-temperature synchrotron X-ray diffraction and electrical resistivity measurements. For the first time, high-quality X-ray diffraction data were collected for the intermediate orthorhombic PbSe. Combined with ab initio calculations, we find a Cmcm, InI-type symmetry for the intermediate phase, which is structurally more favorable than the anti-GeS-type Pnma. At room temperature, the onset of the cubic-orthorhombic transition was observed at ∼3.5 GPa with a ∼3.4% volume reduction. At an elevated temperature of 1000 K, the reversed orthorhombic-to-cubic transition was observed at 6.12 GPa, indicating a positive Clapeyron slope for the phase boundary. Interestingly, phase-transition induced elastic softening in PbSe was also observed, which can be mainly attributed to the loosely bonded trigonal prisms along the b-axis in the Cmcm structure. In a comparison with the cubic phase, orthorhombic PbSe exhibits a large negative pressure dependence of electrical resistivity. In addition, thermoelastic properties of orthorhombic PbSe have been derived from isothermal compression data, such as the temperature derivative of bulk modulus and thermally induced pressure. 

ArticleTotal : 3	Year
Publication title Cited by 2	2017
$Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction$ Publication title Cited by 1	2018
Publication title	2026

Haiyan Chen

Biography

JoVE Journal Publications

Other Publications