Microstructural and chemical features of impact melts on Ryugu particle surfaces: Records of interplanetary dust hit on asteroid Ryugu.

The Hayabusa2 spacecraft delivered samples of the carbonaceous asteroid Ryugu to Earth. Some of the sample particles show evidence of micrometeoroid impacts, which occurred on the asteroid surface. Among those, particles A0067 and A0094 have flat surfaces on which a large number of microcraters and impact melt splashes are observed.

A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu.

Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of samples from near-Earth asteroid (162173) Ryugu by Hayabusa2 provides the first opportunity for laboratory study of space-weathering signatures on the most abundant type of inner solar system body: a C-type asteroid, composed of materials largely unchanged since the formation of the Solar System. Weathered Ryugu grains show areas of surface amorphization and partial melting of phyllosilicates, in which reduction from Fe to Fe and dehydration developed.

Endoscopic bilateral revision after metal stent deployment for hepatic hilar obstruction using molting technique (with videos).

Background: After multiple uncovered self-expandable metal stent (UCSEMS) deployments, endoscopic revision becomes complex and potentially challenging. A novel stent delivery system with a dilation function has recently been developed in Japan. This study evaluated the technical feasibility of this device for patients with unresectable malignant hilar biliary obstruction (MHO) after multiple UCSEMS deployments.

Partially covered self-expandable metal stent with antimigratory single flange plays important role during EUS-guided hepaticogastrostomy.

 Stent migration into the abdominal cavity, which can occur due to stent shortening or stomach mobility, is a critical adverse event (AE) in EUS-HGS. To prevent this AE due to stent shortening, a novel, partially covered self-expandable metal stent with an antimigratory single flange has recently become available in Japan. The present study evaluated the clinical feasibility and safety of EUS-HGS using this novel stent.

Endoscopic gallbladder drainage for acute cholecystitis with high-risk surgical patients between transduodenal and transpapillary stenting.

Background And Objectives: EUS-guided gallbladder drainage (GBD) has emerged as an alternative GBD technique, particularly for high-risk surgical patients. To prevent stent migration or to facilitate stent deployment, the lumen-apposing metal stent (LAMS) was recently developed for EUS-GBD. However, LAMS remains unavailable in several countries and is expensive compared with conventional fully covered self-expandable metal stent (FCSEMS).

Rotational Medicine Ball Throw Velocity Relates to NCAA Division III College Baseball Player Bat Swing, Batted Baseball, and Pitching Velocity.

Taniyama, D, Matsuno, J, Yoshida, K, Pyle, B, and Nyland, J. Rotational medicine ball throw velocity relates to NCAA Division III college baseball player bat swing, batted baseball, and pitching velocity. J Strength Cond Res 35(12): 3414-3419, 2021-Previous studies have evaluated relationships between baseball batting or pitching and whole-body power tests such as rotational medicine ball throw velocity (RMBTV) (transverse plane), lateral-to-medial hop for distance (frontal plane), and two-legged standing broad jump for distance (sagittal plane).

Technical feasibility and safety of one-step deployment of EUS-guided hepaticogastrostomy using an 8-mm diameter metal stent with a fine-gauge stent delivery system (with video).

Background And Objectives: Adverse events (AEs) such as bile peritonitis or pneumoperitoneum might occur during procedural steps for EUS-guided hepaticogastrostomy (HGS), such as during device exchange and after fistula dilation until stent deployment. Reducing the steps to the EUS-HGS procedure might therefore be ideal to prevent the occurrence of AEs. Recently, a novel, fully covered self-expandable metal stent (FCSEMS) has become available.

Expanding indications for endoscopic ultrasound-guided hepaticogastrostomy for patients with insufficient dilatation of the intrahepatic bile duct using a 22G needle combined with a novel 0.018-inch guidewire (with video).

A prerequisite for endoscopic ultrasound (EUS)-guided hepaticogastrostomy (HGS) is adequate dilation of the intrahepatic bile duct. Compared with a 19G needle, the 22G needle offers more flexible manipulation and superior ability to achieve bile duct puncture. However, evidence regarding EUS-HGS using a 22G needle remains limited.

Prospective multicenter evaluation of moving cell metallic stents in endoscopic multiple stent deployment for hepatic hilar obstruction.

Background And Aim: Bilateral stent deployment for malignant biliary obstruction (MHBO) can be achieved using side-by-side (SBS) or stent-in-stent (SIS) procedures. Compared with SBS techniques, the procedural steps of SIS are technically complex due to the necessity of introducing the delivery system into a contralateral biliary tract through the mesh of the SEMS. To overcome this issue, a novel uncovered SEMS, the HILZO Moving Cell Stent (MCS) has been released.

Experimental study of loop shape using 0.025-inch ERCP guidewires (with videos).

 Duct penetration by the guidewire sometimes occurs during endoscopic retrograde cholangiography, which might lead to adverse events such as acute pancreatitis. To prevent duct penetration, making a loop shape with the guidewire might provide a useful technique. The aim of this experimental study was thus to evaluate which types of guidewire can most easily form a loop shape.

Infected aortic aneurysm caused by Streptococcus pyogenes: A case report.

We reported the case with infected abdominal aortic aneurysm (AAA) caused by Streptococcus (S.) pyogenes. A seventy-seven-year-old man, who had the history of uncontrolled diabetes mellitus (DM), complained fever and abdominal pain.

Technical feasibility and safety of transluminal antegrade dilation for hepaticojejunostomy stricture using a novel fine-gauge electrocautery dilator (with video).

A novel fine-gauge electrocautery dilator (ED) has recently become available in Japan. The current study evaluated the safety and feasibility of transluminal antegrade dilation for hepaticojejunal stricture (HJS) using this novel ED. Patients who with complicated HJS were retrospectively enrolled.

Synthesis and characterization of nanoemulsion-mediated core crosslinked nanoparticles, and in vivo pharmacokinetics depending on the structural characteristics.

For designing nanoparticles as drug carriers, a covalently crosslinked structure is necessary for the structural stability in vivo. In this study, we prepared core crosslinked nanoparticles through the formation of nanoemulsions stabilized by poly(ethylene glycol) (PEG)-bearing surfactants. The structural characteristics of these particles were carefully evaluated using small-angle scattering techniques including dynamic, static, X-ray, and neutron scattering.

Antiplatelet and/or anticoagulant treatment does not increase hemorrhagic adverse events during EUS-guided biliary drainage.

Background And Aims: No data appear to have been reported regarding bleeding risk among patients receiving antiplatelet and/or anticoagulant treatment (AP/AC) during EUS-guided biliary drainage (BD) procedures. The aim of this study was to assess whether hemorrhagic adverse events associated with EUS-BD are increased in patients on AP/AC.

Methods: Patients receiving AP/AC who underwent EUS-BD were retrospectively enrolled between May 2015 and August 2019.

Bundling Process of Citrulline Polypeptides upon UCST-Type Phase Separation.

Ureido-modified poly(l-citrulline) (l-ornithine--l-citrulline denoted by PlOC) shows UCST-type phase separation behavior even under physiologically relevant conditions, which forms an α-helix structure above its phase separation temperature () but transforms into a solid-like aggregation composed of regular hexagonal packed cylinders below the . This morphological transformation is characteristic of the phase separation behavior, but the mechanism behind it has remained incompletely understood. Here, we studied the phase separation behavior using small-angle X-ray scattering (SAXS) measurements.

Bloodstream infection by multidrug-resistant Streptococcus oralis in a leukemic patient with febrile neutropenia after hematopoietic stem cell transplantation.

We reported the case of a patient with leukemia who developed febrile neutropenia after hematopoietic stem cell transplantation. Blood culture results revealed the presence of Streptococcus oralis, while antimicrobial susceptibility testing showed the resistance to penicillin and cephem. Furthermore, isolates were not susceptible to either meropenem or daptomycin but not to vancomycin.

Novel transluminal treatment protocol for hepaticojejunostomy stricture using covered self-expandable metal stent.

Background: Hepaticojejunostomy anastomotic stricture (HJS) is a rare complication after pancreatoduodenostomy. However, the rate of HJS may be increased with the expansion of operative indications, such as intraductal papillary mucinous neoplasm. Recently, the indications for EUS-guided biliary drainage to treat benign biliary disease have expanded.

Discovery of fossil asteroidal ice in primitive meteorite Acfer 094.

Carbonaceous chondrites are meteorites believed to preserve our planet's source materials, but the precise nature of these materials still remains uncertain. To uncover pristine planetary materials, we performed synchrotron radiation-based x-ray computed nanotomography of a primitive carbonaceous chondrite, Acfer 094, and found ultraporous lithology (UPL) widely distributed in a fine-grained matrix. UPLs are porous aggregates of amorphous and crystalline silicates, Fe─Ni sulfides, and organics.

Prospective comparison study of franseen needle and standard needle use for pancreatic lesions under EUS guidance.

Background And Objectives: A needle with Franseen geometry for fine needle aspiration is now available. However, no reports have described prospective evaluations of the Franseen needle or comparisons with the standard needle. The aim of this comparative prospective study was to evaluate the histological diagnostic yield of the Franseen needle and the standard needle using tissue obtained by a single pass of each for the same lesion.

Strongly correlated oxides for energy harvesting.

We review recent advances in strongly correlated oxides as thermoelectric materials in pursuit of energy harvesting. We discuss two topics: one is the enhancement of the ordinary thermoelectric properties by controlling orbital degrees of freedom and orbital fluctuation not only in bulk but also at the interface of correlated oxides. The other topic is the use of new phenomena driven by spin-orbit coupling (SOC) of materials.