Automatic modulation classification for interrupted sampling proximity detector signals using time-frequency reconstruction network and polynomial chirplet transform.

Automatic modulation classification (AMC) of proximity detector signals is essential for effective electronic countermeasures. However, due to signal distortion and information loss, AMC becomes very challenging under interrupted sampling (IS) conditions. To tackle this, a new AMC method using the Polynomial Chirplet Transform (PCT) and a Time-Frequency Reconstruction Network (TFRNet), referred to as PCT-TFRNet, is proposed.

Stepwise screening with LC-Q/TOF-MS and signal subtraction with GC×GC-TOFMS enables rapid identification of 6PPD-Q and 6PPD metabolites in Raphidocelis subcapitata.

Widespread environmental detection of tire additive N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and its toxic metabolite N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-Q) pose a significant threat to aquatic ecosystems. However, a comprehensive understanding of their biotransformation pathways remains elusive. This study investigates the phase I and phase II metabolism of 6PPD and 6PPD-Q in freshwater microalga Raphidocelis subcapitata, revealing their rapid transformation under microalgae aquatic environment.

Development of an AI model for DILI-level prediction using liver organoid brightfield images.

AI image processing techniques hold promise for clinical applications by enabling analysis of complex status information from cells. Importantly, real-time brightfield imaging has advantages of informativeness, non-destructive nature, and low cost over fluorescence imaging. Currently, human liver organoids (HLOs) offer an alternative to animal models due to their excellent physiological recapitulation including basic functions and drug metabolism.

Salt resistance property evaluation of lost circulation materials for wellbore strengthening in deep geological formations.

Deep well drilling in high-salinity geological formations presents significant challenges, including recurrent loss of drilling fluids and repeated plugging failures. These issues necessitate a reevaluation of conventional lost circulation materials (LCMs) and their performance metrics. Here, we investigate the behavior of commonly used bridging LCMs under high-salinity conditions characteristic of the Kuqa foreland in China's Tarim Basin.

A Novel Self-Healing Anticorrosive Inhibitor for Pipeline Corrosion Protection in Geothermal Well Systems.

The growing demand for energy coupled with the need for environmental sustainability underscores the importance of advancing renewable energy technologies. Among these, geothermal energy stands out as a clean and sustainable resource with substantial potential for heating and power generation. However, the corrosion of materials in geothermal facilities presents a significant operational challenge.

Comparative study of cylindrical circular ring magnets for colonic anastomosis in rats.

Background: Magnetic compression anastomosis (MCA) offers a simple and reliable technique for inducing anastomoses at any point along the digestive tract. Evidence regarding whether the design of the MCA device influences the anastomosis effect is lacking.

Aim: To investigate any difference in the side-to-side colonic anastomosis effect achieved with cylindrical circular ring magnets.

Soft and Stretchable Optical Fibers with Gradient Color Coding for Multipoint Bending and Tactile Perception in Dexterous Hands.

Robotic tactile sensing technology is crucial for the advancement of intelligent humanoid robotics. Recently, optical fiber-based tactile sensors have attracted significant attention, leading to rapid developments in the field. Inspired by the spatial distribution and multipoint sensing capabilities of tactile mechanoreceptors in human skin, we introduce a stretchable and flexible optical fiber sensor with gradient-colored segments embedded within its core alongside a fabrication method.

An isolated organ feasibility study of deformable self-assembled magnetic anastomosis rings for esophageal stenosis anastomosis.

Magnetic compression anastomosis (MCA) for esophageal stenosis requires the insertion of magnets through two channels, transoral and transgastrostomy. Herein, we designed a Y-Z deformable self-assembled magnetic anastomosis ring (Y-Z DSAMAR) for esophageal stricture anastomosis through the transoral passage only. We introduce a Y-Z DSAMAR and verify its feasibility for single-access esophageal stenosis anastomosis in isolated organs.

Comparative growth inhibition of 6PPD and 6PPD-Q on microalgae Selenastrum capricornutum, with insights into 6PPD-induced phototoxicity and oxidative stress.

Widespread environmental detection of tire additive N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and its toxic metabolite 6PPD-Q has raised great concerns for their potential impact on aquatic biota. This study investigated the effects of 6PPD and 6PPD-Q on the model green microalgae (Selenastrum capricornutum). Results showed that 6PPD at the concentrations of 1-5 mg·L stimulated S.

Unraveling the fate of 6PPD-Q in aquatic environment: Insights into formation, dissipation, and transformation under natural conditions.

The widespread occurrence of N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-Q) in aquatic environments and its hazards to aquatic species underscore the necessity of comprehending its environmental fate. Here, we investigated the transformation from 6PPD to 6PPD-Q and the attenuation of 6PPD-Q in surface water under natural conditions. Contrary to prior findings, this work revealed that 6PPD-Q and its precursor 6PPD-OH/6PPD-(OH), were not detected through target analysis and suspect screening during 6PPD transformation in the surface water under the natural conditions.

Novel magnetic compression technique for the treatment of postoperative anastomotic stenosis in rectal cancer: A case report.

Background: The treatment of postoperative anastomotic stenosis after excision of rectal cancer is challenging. Endoscopic balloon dilation and radial incision are not effective in all patients. We present a new endoscopy-assisted magnetic compression technique (MCT) for the treatment of rectal anastomotic stenosis.

Magnetic compression anastomosis to restore biliary tract continuity after obstruction following major abdominal trauma: A case report.

Background: The combination of magnetic compression anastomosis (MCA) and endoscopy has been used to treat biliary stricture after liver transplantation. However, its use for the treatment of complex biliary obstruction after major abdominal trauma has not been reported. This case report describes the successful use of MCA for the treatment of biliary obstruction resulting from major abdominal trauma.

Reduction in antimicrobial resistance in a watershed after closure of livestock farms.

Natural environments play a crucial role in transmission of antimicrobial resistance (AMR). Development of methods to manage antibiotic resistance genes (ARGs) in natural environments are usually limited to the laboratory or field scale, partially due to the complex dynamics of transmission between different environmental compartments. Here, we conducted a nine-year longitudinal profiling of ARGs at a watershed scale, and provide evidence that restrictions on livestock farms near water bodies significantly reduced riverine ARG abundance.

Deciphering the Role of Microbial Extracellular and Intracellular Organic Matter in Antibiotic Photodissipation: Molecular and Fluorescent Profiling under Natural Radiation.

This study addresses existing gaps in understanding the specific involvement of dissolved organic matter (DOM) fractions in antibiotic photolysis, particularly under natural conditions and during DOM photobleaching. Employing fluorescent, chemical, and molecular analysis techniques, it explores the impact of extracellular and intracellular organic matter (EOM and IOM) on the photodissipation of multiclass antibiotics, coupled with DOM photobleaching under natural solar radiation. Key findings underscore the selective photobleaching of DOM fractions, propelled by distinct chemical profiles, influencing DOM-mediated antibiotic photolysis.

Clinical feasibility of laparoscopic left lateral segment liver resection with magnetic anchor technique: The first clinical study from China.

Background: Magnetic anchor technique (MAT) has been applied in laparoscopic cholecystectomy and laparoscopic appendectomy, but has not been reported in laparoscopic partial hepatectomy.

Aim: To evaluate the feasibility of the MAT in laparoscopic left lateral segment liver resection.

Methods: Retrospective analysis was conducted on the clinical data of eight patients who underwent laparoscopic left lateral segment liver resection assisted by MAT in our department from July 2020 to November 2021.

Comparative study on the establishment efficacy of four types of animal models of rectovaginal fistula in rabbits.

Various surgical methods have so far been developed for treating rectovaginal fistula (RVF), each with its own advantages and disadvantages. The lack of standardized animal models of RVF is a major reason for the failure to establish a unified and effective surgical method for the treatment of RVF. This study aimed to explore the feasibility of an RVF animal model by magnetic compression and compare it with the traditional modeling method.

Feasibility experiment of a novel deformable self-assembled magnetic anastomosis ring (DSAMAR) for gastrointestinal anastomosis through a natural orifice.

Although the application of magnetic compression anastomosis is becoming increasingly widespread, the magnets used in earlier studies were mostly in the shape of a whole ring. Hence, a deformable self-assembled magnetic anastomosis ring (DSAMAR) was designed in this study for gastrointestinal anastomosis. Furthermore, its feasibility was studied using a beagle model.

Optimization of tracheoesophageal fistula model established with T-shaped magnet system based on magnetic compression technique.

Background: The magnetic compression technique has been used to establish an animal model of tracheoesophageal fistula (TEF), but the commonly shaped magnets present limitations of poor homogeneity of TEF and poor model control. We designed a T-shaped magnet system to overcome these problems and verified its effectiveness animal experiments.

Aim: To investigate the effectiveness of a T-shaped magnet system for establishing a TEF model in beagle dogs.

Influence of different magnetic forces on the effect of colonic anastomosis in rats.

Background: Despite much work having been conducted on magnetic compression anastomosis (MCA) in the digestive tract, there are no reports on the influence of magnetic force on the anastomosis.

Aim: To investigate the effect of different magnetic force magnets on the MCA of the digestive tract.

Methods: Two groups of magnets of the same sizes but different magnetic forces were designed and produced.

A novel magnetic compression technique for establishment of a vesicovaginal fistula model in Beagle dogs.

Vesicovaginal fistula lacks a standard, established animal model, making surgical innovations for this condition challenging. Herein, we aimed to non-surgically establish vesicovaginal fistula using the magnetic compression technique, and the feasibility of this method was explored using eight female Beagle dogs as model animals. In these dogs, cylindrical daughter and parent magnets were implanted into the bladder and vagina, respectively, after anesthesia, and the positions of these magnets were adjusted under X-ray supervision to make them attract each other, thus forming the structure of daughter magnet-bladder wall-vaginal wall-parent magnet.