Abstract Accurate age estimation of nearby young moving groups (NYMGs) is important as they serve crucial testbeds in various fields astrophysics, including the formation and evolution stars planets, well loose stellar associations. The β -Pictoris group (BPMG), being one closest youngest NYMGs, has been extensively investigated, its estimated ages have a wide range from ∼10–25 Myr, depending on methods data used. Unlike other dating methods, kinematic traceback analysis offers...

During our efforts to find bioactive natural products with anti-inflammatory activity, we isolated gigantol from the whole plants of Cymbidium goeringii (Orchidaceae) by activity-guided chromatographic fractionation. Gigantol was found have potent inhibitory effects on LPS-induced nitric oxide (NO) and prostaglandin E2 (PGE2) production in RAW 264.7 cells. Consistent these findings, suppressed expression inducible synthase (iNOS) cyclooxygenase-2 (COX-2) at protein mRNA levels cells a...

Biomarkers play a vital role in clinical care. They enable early diagnosis and treatment by identifying patient’s condition disease course act as an outcome measure that accurately evaluates the efficacy of new or drug. Due to rapid development digital technologies, biomarkers are expected grow tremendously. In era change, this scoping review was conducted see which progressing neuromuscular disorders, diverse broad-range group among neurological diseases, discover available evidence for...

We report the discovery of oldest (~55 Myr) mid-M type star known to host on-going accretion. 2MASS J15460752-6258042 (2M1546, spectral M5, 59.2 pc) shows spectroscopic signs accretion such as strong Ha, He I, and [O I] emission lines, from which we estimate an rate ~10^-10 Msun/yr. Considering clearly detected infrared excess in all WISE bands, shape its energy distribution age, believe is surrounded by a transitional disc, with some gas still present at inner radii. The position kinematics...

The fully passivated low noise AlGaAs/InGaAs/GaAs pseudomorphic (PM) HEMT with 0.13 μm T-shaped gate was fabricated using dose split electron beam lithography method (DSM). This device exhibited figures of 0.31 and 0.45 dB at 12 18 GHz, respectively. These are the lowest value ever reported for GaAs based HEMT's. results attributed to extremely resistance which from wide head having higher ratio more than 10 length footprint.

Object detections are critical technologies for the safety of pedestrians and drivers in autonomous vehicles. Above all, occluded pedestrian detection is still a challenging topic. We propose new scheme by means lidar–radar sensor fusion. In proposed method, lidar radar regions interest (RoIs) have been selected based on respective measurement. Occluded depth to determine whether an target exists or not. The region projected out expanding longitudinal distance with maintaining angle formed...

Object detection has been researched using a camera, LIDAR and RADAR. However, camera-based techniques have heavy image processing are sensitive for light intensity. can measure precise distance from objects, but it is difficult to classify objects. Further, known that when pedestrians partially occluded, detecting them extremely because of insufficient data determine them. To address this problem, we use RADAR sensors improve the accuracy. We present sensor fusion scheme occluded pedestrian...

Stellar kinematics provides the key to understanding star formation process. In this respect, we present a kinematic study of Monoceros OB1 (Mon OB1) and R1 R1) associations using recent Gaia data radial velocities stars derived from high-resolution spectroscopy literature. A total 728 members are selected criteria based on intrinsic properties young stars, parallaxes, proper motions. The spatial distribution show that these have distinct substructures. Mon OB1, find one northern group two...

We present Herschel/PACS observations of L1448-MM, a Class 0 protostar with prominent outflow. Numerous emission lines are detected at 55 < lambda 210 micrometer including CO, OH, H2O, and [O I]. investigate the spatial distribution each transition to find that from low energy levels tend distribute along outflow direction while high peak central pixel. Spatial maps reveal OH formed in relatively small area, I] is extended. According rotational diagram analysis, CO can be fitted by two...

Young nearby moving groups are important and useful in many fields of astronomy such as studying exoplanets, low-mass stars, the stellar evolution early planetary systems over tens millions years, which has led to intensive searches for their members. Identification members depends on used models sensitively; therefore, careful examination is required. In this study, we investigate effects group membership calculations based a Bayesian framework (e.g. BANYAN II) focusing beta-Pictoris...

LiDAR-based 3D object detectors usually adopt grid- based approaches to handle sparse point clouds efficiently. However, during this process, the down-sampled features inevitably lose spatial information, which can hinder from accurately predicting location and size of objects. To address issue, previous researches proposed sophisticatedly designed neck head modules effectively compensate for information loss. Inspired by core insights studies, we propose a novel voxel-based detector, named...

Lee & Song (2018, Paper 1) developed a tool for calculating Bayesian membership probability nearby young stellar moving groups (BAMG: Analysis of Moving Groups). The study presented the importance careful construction models in group assessment, using $\beta$ Pictoris as test case. In this study, we build all major (NYMGs hereafter) through 4 stages. A set prototype is created members listed discovery paper each group. For group, suggested after are used revising these models. As additional...

Gaia EDR3 offers greatly improved kinematics for nearby objects, including members of young stellar moving groups (NYMGs). In this study, we aim to identify low-mass NYMG (spectral types M0 mid-L) in EDR3. We calculated spatio-kinematic membership probabilities utilising a Bayesian probability calculation scheme developed our previous study. evaluated youth primarily based on colour-magnitude diagram positions. Combining assessment and evaluation, identified ~2900 candidate ~700 previously...

Six low-mass embedded sources (L1489, L1551-IRS5, TMR1, TMC1-A, L1527, and TMC1) in Taurus have been observed with Herschel-PACS to cover the full spectrum from 50 210 $\mu$m as part of Herschel key program, "Dust, Ice, Gas In Time (DIGIT)". The relatively low intensity interstellar radiation field surrounding minimizes contamination [C II] emission associated by diffuse cloud surface, allowing study source. several sources, is distributed along outflow, [O I] emission. atomic line...

Nearby young stellar moving groups have been identified by many research with different methods and criteria giving rise to cautions on the reality of some groups.We aim utilise in an unbiased way create a list unambiguously recognisable their members.For analysis, two unsupervised machine learning algorithms (K-means Agglomerative Clustering) are applied previously known bona fide members nine from our previous study.As result this study, we recovered six (AB Doradus, Argus, β-Pic, Carina,...

Despite the development of sensors and their sensor fusion technologies, pedestrian detection technology is a still challenging topic. The using LIDAR-RADAR method hasn¡¯t yet been reported. We propose occluded depth generation based scheme. proposed consists object detection, then detection. Objects within are detected by RADAR an estimated to means human Doppler distribution.

Accurate age estimation of nearby young moving groups (NYMGs) is important as they serve crucial testbeds in various fields astrophysics, including formation and evolution stars, planets, well loose stellar associations. The $\beta$-Pictoris group (BPMG), being one the closest youngest NYMGs, has been extensively investigated, its estimated ages have a wide range from $\sim$10 to 25 Myr, depending on methods data used. Unlike other dating methods, kinematic traceback analysis offers...

Room temperature photoluminescence in δ-doped pseudomorphic AlGaAs/InGaAs/GaAs quantum wells is investigated. The electron and hole subband structure optical transition matrix elements are calculated by a self-consistent theoretical method. Separations of the conduction levels valence reveal that dominant emissions due to transitions from second first heavy-hole subband, subband. calculation also predicts energies shift lower with increase δ-doping level. This accounted for lowering confined...

The effects of graphene n-doping on metal–graphene (M–G) contacts in combination with 1D edge is discussed by J.-H. Park and co-workers, as described page 864, presenting a record contact resistance 23 Ω μm at room temperature (19 100 K). This lower than the value required for latest Si CMOS technology. scheme applied to graphene–perovskite hybrid photo-detectors, significantly improvement its performance (0.6 → 1.8 A W−1 photoresponsivity 3.3 × 104 5.4 Jones detectivity).