SMAS

The growing demand for intelligent systems with improved human-machine interactions has created an opportunity to develop adaptive bending structures. Interactive fibre rubber composites (IFRCs) are created using smart materials as actuators to obtain any desired application using fibre-reinforced elastomer. Shape memory alloys (SMAs) play a prominent role in the smart material family and are being used for various applications. Their diverse applications are intended for commercial and research purposes, and the need to model and analyse these application-based structures to achieve their maximum potential is of utmost importance...

This study endeavors to comprehensively explore and elucidate the seamless integration of NiTi shape memory alloys (SMAs) into multifaceted applications through the utilization of novel joining techniques. The primary focus lies in the utilization of wire arc additive manufacturing (WAAM) to deposit Nitinol (NiTi) onto Copper (Cu), thereby introducing a transformative approach for their integration into electro-mechanical systems and beyond. Through a detailed examination of the NiTi/Cu bimetallic junction, using advanced analytical techniques including SEM, XRD, and DSC analyses, this research aims to unravel the intricate complexities inherent within the interface...

All-polymer solar cells (all-PSCs) offer improved morphological and mechanical stability compared with those containing small-molecule-acceptors (SMAs). They can be processed with a broader range of conditions, making them desirable for printing techniques. In this study, we report a high-performance polymer acceptor design based on bithiazole linker (PY-BTz) that are on par with SMAs. We demonstrate that bithiazole induces a more coplanar and ordered conformation compared to bithiophene due to the synergistic effect of non-covalent backbone planarization and reduced steric encumbrances...

OBJECTIVES: To examine the effectiveness of shared medical appointments (SMAs) compared with one-to-one appointments in primary care for improving health outcomes and reducing demand on healthcare services by people with one or more long-term conditions (LTCs). DESIGN: A systematic review of the published literature. DATA SOURCES: Six databases, including MEDLINE and Web of Science, were searched 2013-2023. Relevant pre-2013 trials identified by forward and backward citation searches of the included trials were included...

The aged neck is the most common motivator for patients seeking facial rejuvenation. Unlike the deflated midface, surgical treatment is still the gold standard for optimal outcomes. It is our view that the majority etiology of both the aged neck and deflated midface is gravity's effects on the su-perficial soft tissue envelope, leading to soft tissue redundancy. It is also our view that the deep-plane rhytidectomy is supported by anatomy, embryology, and clinical evidence as the best meth-odology to treat soft tissue redundancy without producing the aesthetic and longevity issues asso-ciated with SMAS techniques...

BACKGROUND: Superior mesenteric artery syndrome (SMAS) is a rare condition caused by the compression of the duodenum, which may occur in the case of fast weight loss. Currently, the relationship between superior mesenteric artery syndrome and anorexia nervosa is still unclear. The aim of this study is to identify the precocious clinical signs and symptoms of SMAS in patients affected by anorexia nervosa so as not to delay the diagnosis. METHODS: We present the clinical case of a young female patient with anorexia nervosa complicated by SMAS...

Superior mesenteric artery syndrome (SMAS) is a rare and potentially life-threatening cause of small bowel obstruction in which the superior mesenteric artery impinges on the third portion of the duodenum. SMAS is typically encountered in patients with low body fat and a history of rapid weight loss and is often diagnosed as a chronic or subacute condition. Here, we describe a case of a healthy adolescent boy without typical SMAS prodromal symptoms presenting with a severe, hyperacute proximal small bowel obstruction due to SMAS...

Giant molecular acceptors (GMAs) are typically designed through the conjugated linking of individual small molecule acceptors (SMAs). This design imparts an extended molecular size, elevating the glass transition temperature (Tg) relative to their SMA counterparts. Consequently, it effectively suppresses the thermodynamic relaxation of the acceptor component when blended with polymer donors to construct stable polymer solar cells (PSCs). Different from previous reports utilizing p-type linkers, here, we explore an n-type linker, to dimerize the SMA units via a click-like Knoevenagel condensation, affording BT-DL...

BACKGROUND: Given Japan's rapidly aging population, the Ministry of Health, Labour and Welfare's policy of reducing hospital beds and replacing medical care with nursing care requires the establishment of a coordinated system of medical and care services tailored to regional characteristics. To gain useful knowledge for the development of such a system, this study aimed to identify differences in the structure of the relationship between medical and care resources due to differences in regional characteristics...

ES-62, a protein secreted by Acanthocheilonema viteae, is anti-inflammatory by virtue of covalently attached phosphorylcholine (PC) residues and thus a library of drug-like small molecule analogues (SMAs) based on its PC moieties has been designed for therapeutic purposes. Two members, SMAs 11a and 12b, were previously found to suppress production of pro-inflammatory cytokines by mouse bone marrow-derived macrophages (BMMs) exposed to cytosine-phosphate-guanosine oligodeoxynucleotides (CpG), agonists for Toll-like receptor 9...

BACKGROUND: Shape memory alloys (SMAs) are well-known for their unique ability to undergo a shape change in response to a thermal stimulus. A frequently-used SMA for biomedical devices is NiTi, although its superelastic features tend to be emphasized more than the ability to change shape. Minimally invasive NiTi implants which can reconfigure or adjust their shape across several temperature points could provide desirable surgical outcomes. For decades, therapeutic ultrasound has been used medically as a non-invasive method for tissue thermal therapy...

Superior mesenteric artery syndrome (SMAS) is a rare and unusual disease, suspected clinically and confirmed radiologically. It represents a duodenal obstruction secondary to the impingement of the third portion of the duodenum between the abdominal aorta (AA) and the superior mesenteric artery (SMA) due to decreased intraabdominal fat. High morbidity and mortality rates are linked to missed or late diagnosis that can lead to complications, such as gastric perforation and gastric hemorrhage. We present the case of a 33-year-old man who was not previously known to have a SMAS, who presented to the emergency department with signs of septic shock, complaining of fever and respiratory symptoms for several days...

The fundamental goal of modern face and neck lifting is to enhance and restore a more youthful facial appearance by addressing soft tissue descent. There are variations in described facelift technique including superficial musculoaponeurotic system (SMAS) flaps, composite flaps, deep plane, skin flaps and subperiosteal facelifts, amongst others. The term "deep plane rhytidectomy" was originally described by Hamra. This term has since been linked with facelift surgery with recent advances including incision placement, treatments of SMAS-platysma complex, and mastoid crevasse amongst others...

UNLABELLED: MELAS - an acronym for mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes - is a multiorgan disease caused by a mutation in mitochondrial DNA (mtDNA). Its clinical manifestations are highly variable; mainly stroke-like episodes, seizures, recurrent headaches, or muscle weakness. However, gastrointestinal complications such as chronic intestinal pseudo-obstruction (IPO), pancreatitis, gastroparesis and hepatopathy are also common. In this report we describe a young patient with gastrointestinal complication of MELAS which led to superior mesenteric artery syndrome (SMAS)...

OBJECTIVES: Serous microcystic adenoma (SMA), a primary benign pancreatic tumor which can be clinically followed-up instead of undergoing surgery, are sometimes mis-distinguished as pancreatic neuroendocrine tumor (pNET) in regular preoperative imaging examinations. This study aimed to analyze preoperative contrast-enhanced ultrasound (CEUS) and shear wave elastography (SWE) features of SMAs in comparison to pNETs. MATERIAL AND METHODS: In this retrospective study, patients with imaging-diagnosed pancreatic lesions were screened between October 2020 to October 2022 (ethical approval No...

The nonclassical ten-pi-electron 5,5-fused thieno[3,4- c ]thiadiazole (TTD) unit is an excellent building block for constructing sub-silicon-band gap organic semiconductors. However, no small molecule acceptor (SMA) materials based on TTD have been reported despite the fact that high-sensitivity near-infrared organic photodetectors (OPDs) are generally achieved by using SMAs. In this work, we report a TTD-based narrow band gap (0.95 eV) SMA material TTD(DTC-2FIC)2 with strong near-infrared absorption. Employing PTB7-Th as a donor, OPDs based on TTD(DTC-2FIC)2 exhibit an optimized responsivity of 0...

Polymer solar cells (PSCs) rely on a blend of small molecular acceptors (SMAs) with polymer donors, where thermodynamic relaxation of SMAs poses critical concerns on operational stability. In an effect to dynamically control morphology and tackle this issue, tethered SMAs, wherein SMA subunits are connected to the aromatic-core via flexible chains, are proposed to afford an elevated glass transition temperature (Tg) relative to individual SMAs. However, achieving both higher power conversion efficiency (PCE) and elevated Tg values presents a significant challenge for the design of tethered SMAs...

OBJECTIVE: The superficial cervicofacial musculoaponeurotic system (SMAS) is a complex network formed by mimic muscles and conjunctive tissue of the superficial fascia of the face.This study aimed to introduce new anatomofunctional data on the importance of the trans-SMAS distribution pattern of the skin microperfusion of the face and to underline the role of SMAS in maintaining the homeostasis of the vascular network that crosses it. Considering the fibrous and muscular matrix of the SMAS, using COLIII and MyoH2 antibodies, together with endothelial immunohistochemistry(IHC)intercellular adhesion molecule 2 marker, we determined the correlation of these structures and their interaction...

BACKGROUND: This study evaluates change in practice patterns in facelift surgery based on a 15-year review of tracer data collected by the American Board of Plastic Surgery as part of the Continuous Certification process. METHODS: Tracer data for facelift was reviewed from 2006 to 2021. The 15-year collection period was divided into an "early cohort (EC)" from 2006 to 2014 and a "recent cohort (RC)" from 2015 to 2021. RESULTS: Of 3400 facelifts (1710 EC/1690 RC) performed, 18% were done in hospital and 76% were done in an accredited office facility...

BACKGROUND: Facelift procedures are a popular method of facial rejuvenation. The most common technique is superficial muscular aponeurotic system (SMAS) plication, with several variations. However, the optimal approach remains unclear. This review analyzed previous studies to compare SMAS facelift techniques, their outcomes, and complication rates. METHODS: A systematic search was conducted using the MEDLINE, Cochrane, Embase, and Google Scholar electronic databases in September 2022...