Slow water transport in MgSO4 aerosol droplets at gel-forming relative humidities.

The effect of gel formation on the mass transfer of water during evaporation or condensation from MgSO4 droplets is studied using aerosol optical tweezers coupled with Raman spectroscopy. In particular, the kinetics of water transport during hydration and dehydration are followed for variable step changes in relative humidity and compared with previous measurements using different methodologies. Slow diffusion of water in the particle bulk is shown to limit water evaporation and condensation from the aerosol.

Investigation of the current situation of massive blood transfusion in different surgical departments: a large multicenter study in China.

Objective: This study aims to learn about the current situation of surgical massive blood transfusion of different surgical departments in China's Tertiary hospitals, which could provide the basis for the formulation of guidelines on massive blood transfusion.

Method: A multicenter retrospective research on the application status of blood constituents during massive blood transfusion was conducted and a comparative analyses of survival and length of hospitalization in patients from different departments (trauma, cardiac surgery, obstetric conditions, or other common surgeries), were performed.

Result: In China, during massive blood transfusion the ratio of the dosage of fresh frozen plasma to the dosage of red blood cell suspension reached 1:1-2, while the dosage of platelet and cryoprecipitate appeared to be very small.

The plasma and platelet are important in reducing the mortality in surgical massive blood transfusion: a large multicenter study in China.

Objective: The aim of this study was to learn the current situation of surgical massive transfusion of death and survival groups in China, which could provide the basis for the formulation of guidelines on massive transfusion.

Methods: A multicenter retrospective research for the application status of blood constituents during massive blood transfusion was conducted, the differences of fresh frozen plasma and platelet application between death group and survival group were compared, and the transfusion volume and the distribution of other blood constituents were analyses at different periods of time when red blood cells are infused between death group and survival group.

Results: The patients with fresh frozen plasma compare the patients with red blood cell was 1:1-2 during massive transfusion, while the dosage of platelet and cryocepitate were transfused very small.

Multichannel wireless ECoG array ASIC devices.

Surgical resection of epileptogenic foci is often a beneficial treatment for patients suffering debilitating seizures arising from intractable epilepsy [1], [2], [3]. Electrodes placed subdurally on the surface of the brain in the form of an ECoG array is one of the multiple methods for localizing epileptogenic zones for the purpose of defining the region for surgical resection. Currently, transcutaneous wires from ECoG grids limit the duration of time that implanted grids can be used for diagnosis.

Low-power polling mode of the next-generation IMES2 implantable wireless EMG sensor.

The IMES1 Implantable MyoElectric Sensor device is currently in human clinical trials led by the Alfred Mann Foundation. The IMES is implanted in a residual limb and is powered wirelessly using a magnetic field. EMG signals resulting from the amputee's voluntary movement are amplified and transmitted wirelessly by the IMES to an external controller which controls movement of an external motorized prosthesis.