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Droplets resulting from liquid filament contraction have been widely used in industrial processes. However, detailed investigations of liquid compound filament contraction processes are lacking in the literature. Therefore, this study provides a numerical investigation of the contraction of a two-layered compound filament. The simulations are based on an axisymmetric front-tracking method. It is found that because of the interfacial tension force, the initially long cylindrical filament contracts to a compound droplet without any breakup or breaks up into smaller droplets during contraction. Unlike simple filaments, the presence of the inner filament inside the compound filament results in a more complicated compound filament breakup process with various droplet types, e.g., simple ... |
This research presents a highly transparent concentrator photovoltaic system with solar spectral splitting for dual land use applications. The system includes a freeform lens array and a planar waveguide. Sunlight is first concentrated by the lens array and then reaches a flat waveguide. The dichroic mirror with coated prisms is located at each focused area at the bottom of a planar waveguide to split the sunlight spectrum into two spectral bands. The red and blue light, in which photosynthesis occurs at its maximum, passes through the dichroic mirror and is used for agriculture. The remaining spectrums are reflected at the dichroic mirror with coated prisms and collected by the long solar cell attached at one end of the planar waveguide by total internal reflection. Meanwhile, most... |
Việt Nam là một quốc gia Đông Nam Á bị ảnh hưởng bởi đại dịch COVID-19. Kinh nghiệm và thành tựu trong phòng chống dịch SARS trước đây đã giúp Việt Nam có những quyết sách ứng phó kịp thời và hiệu quả với COVID-19 nhưng đại dịch vẫn đặt gánh nặng lớn lên vai các điều dưỡng trực tiếp chăm sóc người bệnh. Mục tiêu: Tìm hiểu kinh nghiệm và cảm nhận của điều dưỡng viên tuyến đầu, những người trực tiếp chăm sóc cho người nhiễm SARS-CoV-2. |
An accurate and fast estimation of cutting forces is necessary for improving the performance of five-axis milling. However, the engagement between cutter and workpiece is very complex and irregular, it represents the main challenge for the prediction of cutting forces. This research aims to present a cutting force model of five-axis ball end milling, in which the effects of lead and tilt angles are investigated. The simulation results show that the resultant cutting force and total engagement area between cutter and workpiece are increased rapidly when the tilt and lead angles are close to zero. The cutting forces under different tool orientations are analyzed. The results of the proposed approach are successfully evaluated by the existing model. |
This study focuses on the relationship between foreign direct investment (FDI) and economic growth of the formal sector comprising all foreign and domestic registered enterprises engaged in production of goods and services. |
Sustained microglial activation and increased pro-inflammatory signalling cause chronic inflammation and neuronal damage in Alzheimer’s disease (AD). Resolution of inflammation follows neutralization of pathogens and is a response to limit damage and promote healing, mediated by pro-resolving lipid mediators (LMs). Since resolution is impaired in AD brains, we decided to test if intranasal administration of pro-resolving LMs in the AppNL-G-F/NL-G-F mouse model for AD could resolve inflammation and ameliorate pathology in the brain. A mixture of the pro-resolving LMs resolvin (Rv) E1, RvD1, RvD2, maresin 1 (MaR1) and neuroprotectin D1 (NPD1) was administered to stimulate their respective receptors. We examined amyloid load, cognition, neuronal network oscillations, glial activation a... |
Long-lived particles that are present in many new physics models beyond the standard model, can be searched for in a number of newly proposed lifetime frontier experiments at the LHC. The signals of the long-lived dark photons can be significantly enhanced in a new dark photon model in which dark photons are copiously produced in the hidden radiation process. We investigate the capability of various lifetime frontier detectors in probing the parameter space of this model, including the far forward detectors FACET and FASER, the far transverse detector MATHUSLA, and the precision timing detector CMS-MTD. |
GldL is an inner-membrane protein that is essential for the function of the type IX secretion system (T9SS) in Flavobacterium johnsoniae. The complex that it forms with GldM is supposed to act as a new rotary motor involved in the gliding motility of the bacterium. In the context of structural studies of GldL to gain information on the assembly and function of the T9SS, two camelid nanobodies were selected, produced and purified. Their interaction with the cytoplasmic domain of GldL was characterized and their crystal structures were solved. These nanobodies will be used as crystallization chaperones to help in the crystallization of the cytoplasmic domain of GldL and could also help to solve the structure of the complex using molecular replacement. |
Ultrasound viscoelastography is a quantitative and convenient imaging model that images soft tissues based on shear waves’ propagation. Thanks to the interaction between ultrasonic waves and shear waves, the physical features of soft tissues (elasticity, viscosity) are expressed by complex shear modulus (CSM) parameters, useful information for diagnosing tissue medical states. Therefore, this paper presented a new efficient approach to estimate CSM and reconstruct the viscoelastic images. |
Radiotherapy (RT) followed by radical surgery is an effective standard treatment strategy for various types of cancer, including rectal cancer. The response to RT varies among patients, and the radiosensitivity of cancer cells determines the clinical outcome of patients. However, the application of RT to patients with radioresistant tumors may result in radiation‑induced toxicity without clinical benefits. Currently, there are no effective methods to predict the response to RT. The limitations of the methods currently used to evaluate tumor radiosensitivity, which are mainly based on clinical and radiological features, are low sensitivity and specificity. Non‑coding RNAs (ncRNAs) have emerged as a class of biomarkers for predicting radiosensitivity. In particular, the expression pat... |
