Fatigue-Resistant Mechanoresponsive Color-Changing Hydrogels for Vision-Based Tactile Robots.

Mechanoresponsive color-changing materials that can reversibly and resiliently change color in response to mechanical deformation are highly desirable for diverse modern technologies in optics, sensors, and robots; however, such materials are rarely achieved. Here, a fatigue-resistant mechanoresponsive color-changing hydrogel (FMCH) is reported that exhibits reversible, resilient, and predictable color changes under mechanical stress. At its undeformed state, the FMCH remains dark under a circular polariscope; upon uniaxial stretching of up to six times its initial length, it gradually shifts its color from black, to gray, yellow, and purple.

Diagnostic value of endoscopic ultrasound in groove pancreatitis.

Groove pancreatitis (GP) is a rare type of chronic pancreatitis characterized by varying degrees of thickening and scarring of the duodenal wall, duodenal lumen stenosis, mucosal hypertrophy with plicae and cyst formation. GP is primarily observed in middle-aged male patients with a history of alcohol consumption. Clinical symptoms are usually non-specific, and there is currently no unified diagnostic standard.

Clinical application and follow-up of electrocautery-enhanced lumen-apposing metal stents for endoscopic ultrasonography-guided interventions.

The lumen-apposing metal stent (LAMS) is a new device that expands the scope of gastrointestinal intervention under endoscopy. LAMS was initially used for the treatment of pancreatic fluid collections (PFCs), but is increasingly being used off-label. The electrocautery system simplifies the deployment of LAMS, making it more suitable for off-label situations.

Diagnostic value of endoscopic ultrasonography in pelvic masses with bowel involvement.

Benign and malignant pelvic masses with or without intestinal invasion are common in women of childbearing age. Patients may have nonspecific symptoms and signs or experience no symptoms. Laparoscopic resection of pelvic masses is currently the mainstream treatment; therefore, accurate preoperative evaluation is not only essential for patients suspected of having intestinal invasion, but also extremely important for the selection of follow-up treatment.

The value of endoscopic ultrasonography for differential diagnosis in obstructive jaundice of the distal common bile duct.

Introduction: Obstructive jaundice is a common clinical disease of great significance; however, diagnosing it according to etiology, especially in patients with distal obstructive jaundice is difficult. The development of endoscopic ultrasonography has improved diagnostic methods. Endoscopic ultrasonography not only improves the accuracy of conventional endoscopic ultrasound technology in etiological diagnosis, but also offers several special endoscopic ultrasound technologies for diagnosing distal obstructive jaundice of the common bile duct.

Improvement of Resistive Switching Performance in Sulfur-Doped HfOx-Based RRAM.

In order to improve the electrical performance of resistive random access memory (RRAM), sulfur (S)-doping technology for HfOx-based RRAM is systematically investigated in this paper. HfOx films with different S-doping contents are achieved by atmospheric pressure chemical vapor deposition (APCVD) under a series of preparation temperatures. The effect of S on crystallinity, surface topography, element composition of HfOx thin films and resistive switching (RS) performance of HfOx-based devices are discussed.

[Intratympanic dexamethasone injections for intractable Meniere's disease].

Objective: To investigate the efficacy of intratympanic dexamethasone injections (IDI) and intermittent pressure (IP) for 13 patients with intractable Meniere's disease (MD).

Method: Dexamethasone (5 g/L) was injected into the middle ear. The injection was repeated the next day and weekly for 3 weeks.