Multiscale Modeling of Heat Conduction in a Hydroxyethyl Cellulose/Boron Nitride Composite Realizing Ultrahigh Thermal Conductivity via a "Moisture-Activated" Strategy.

Polymer-based thermally conductive composites are widely used in microelectronics for heat dissipation and packaging, for which the filler arrangement and the filler/matrix interfacial thermal resistance (ITR) are key factors limiting superior thermal conduction realization. This work reveals the effects of filler modification and orientation on thermal duction in the boron nitride (BN)/hydroxyethyl cellulose (HEC) through multiscale simulation approaches. Nonequilibrium molecular dynamics (NEMD) identifies that the thermal conductivity of the BN molecule is not size-dependent and proves that thermal resistance is dramatically reduced after hydroxylation modification (BN).

Polyurethane Foam Skeleton-Based Phase Change Hydrogel for Efficient Battery Thermal Management with Favorable Antivibration Performance.

Efficient thermal management is critical to ensure the safe and reliable operation of lithium-ion batteries (LIBs) as they are highly sensitive to temperature changes. Meanwhile, LIBs are exposed to various external forces during operation, such as vibration, shock, and oscillation, which may disrupt the physical and chemical processes inside the battery and lead to a decreased performance and shortened life. Here, we designed a phase change hydrogel (PCH) pad based on the polyurethane (PU) foam skeleton and demonstrated its effectiveness in efficient thermal management and improving antivibration performance.

[Efficacy of continuous irrigation combined with closed thoracic drainage for esophagojejunal anastomotic fistula complicated with mediastinal, thoracic and abdominal infections].

Objective: To investigate the clinical efficacy of continuous irrigation combined with closed thoracic drainage for esophagojejunal anastomotic fistula (EJAF) complicated with mediastinal, thoracic and abdominal infection after total gastrectomy.

Methods: Clinical data of 22 EJAF patients complicated with mediastinal, thoracic and abdominal infection after radical gastrectomy at Department of General Surgery of the 901th Hospital of PLA from June 2012 to May 2018 were retrospectively analyzed. Case inclusion criteria:(1) gastric adenocarcinoma confirmed by preoperative endoscopic pathology undergoing radical total gastrectomy without severe organ dysfunction;(2)EJAF complicated with mediastinal, thoracic and abdominal infections diagnosed by postoperative radiography, the presence of pleural effusion confirmed by CT and ultrasound.

Clinical outcome of medium-sized hepatocellular carcinoma treated with microwave ablation.

Aim: To evaluate the outcomes of patients with medium-sized hepatocellular carcinoma (HCC) who underwent percutaneous microwave ablation (MWA).

Methods: We retrospectively reviewed all patients with a single medium-sized HCC who underwent percutaneous MWA from January 2010 to January 2013. Technical success, technical effectiveness and complications were subsequently observed.