Vrlo precizna spektroskopija λ-hiperjezgri iza P-ljuske pomoću elektromagnetske probe u JLabu

The first experiment E89-009/HNSS has made the key demonstration and feasibility test on the electroproduction of hypernuclei. Based on the experiences learned, the newly approved experiment, E01-011, is under preparation with a new method in tagging the scattered electrons and a newly designed and built kaon spectrometer, that optimize the usage of electron beam for high precision hypernuclear spectroscopy. Comparing to HNSS, the hypernuclear yield and signal over background ratio will be increased by about 56 and 10 times, respectively. Most importantly, we expect to obtain an energy resolution of about 300 keV. This experimental setup will open a door for high yield, high quality, and high precision hypernuclear spectroscopic study in a wide mass range. The immediate goal of E01-011 is to study hypernuclei in the medium heavy region.Prvotno mjerenje E89-009/HNSS predstavlja ključan korak i provjeru izvedivosti elektrotvorbe hiperjezgri. Na osnovi postignutog iskustva, u pripremi je nov odobren eksperiment, E01-011, s novom metodom obilježavanja raspršenih elektrona i novo konstruiran i sagrađen kaonski spektrometar, koji optimiziraju upotrebu elektronskog snopa radi hipernuklearne spaktroskopije visokog razlučivanja. U usporedbi s HNSS, prinos hiperjezgri i omjer signal/šum povećat će se 56 odn. 10 puta. Najvažnije je očekivano poboljšanje energijskog razlučivanja na oko 300 keV. Ovaj eksperimentalni postav otvara mogućnosti za vrlo precizna istraživanja hipernuklearne spektroskopije u širokom području masa, s visokim prinosima i visoke kvalitete. Neposredan cilj E01-011 je proučavanje hiperjezgri u području srednjih masa

Vrlo precizna spektroskopija λ-hiperjezgri iza P-ljuske pomoću elektromagnetske probe u JLabu

The first experiment E89-009/HNSS has made the key demonstration and feasibility test on the electroproduction of hypernuclei. Based on the experiences learned, the newly approved experiment, E01-011, is under preparation with a new method in tagging the scattered electrons and a newly designed and built kaon spectrometer, that optimize the usage of electron beam for high precision hypernuclear spectroscopy. Comparing to HNSS, the hypernuclear yield and signal over background ratio will be increased by about 56 and 10 times, respectively. Most importantly, we expect to obtain an energy resolution of about 300 keV. This experimental setup will open a door for high yield, high quality, and high precision hypernuclear spectroscopic study in a wide mass range. The immediate goal of E01-011 is to study hypernuclei in the medium heavy region.Prvotno mjerenje E89-009/HNSS predstavlja ključan korak i provjeru izvedivosti elektrotvorbe hiperjezgri. Na osnovi postignutog iskustva, u pripremi je nov odobren eksperiment, E01-011, s novom metodom obilježavanja raspršenih elektrona i novo konstruiran i sagrađen kaonski spektrometar, koji optimiziraju upotrebu elektronskog snopa radi hipernuklearne spaktroskopije visokog razlučivanja. U usporedbi s HNSS, prinos hiperjezgri i omjer signal/šum povećat će se 56 odn. 10 puta. Najvažnije je očekivano poboljšanje energijskog razlučivanja na oko 300 keV. Ovaj eksperimentalni postav otvara mogućnosti za vrlo precizna istraživanja hipernuklearne spektroskopije u širokom području masa, s visokim prinosima i visoke kvalitete. Neposredan cilj E01-011 je proučavanje hiperjezgri u području srednjih masa

Delayed Pion Spectroscopy of Hypernuclei

New possibilities of hypernuclear studies at modern electron accelerators based on recently developed radio frequency photomultiplier tubes are discussed

ROR1 Is Expressed in Human Breast Cancer and Associated with Enhanced Tumor-Cell Growth

Receptor-tyrosine-kinase-like orphan receptor 1 (ROR1) is expressed during embryogenesis and by certain leukemias, but not by normal adult tissues. Here we show that the neoplastic cells of many human breast cancers express the ROR1 protein and high-level expression of ROR1 in breast adenocarcinoma was associated with aggressive disease. Silencing expression of ROR1 in human breast cancer cell lines found to express this protein impaired their growth in vitro and also in immune-deficient mice. We found that ROR1 could interact with casein kinase 1 epsilon (CK1ε) to activate phosphoinositide 3-kinase-mediated AKT phosphorylation and cAMP-response-element-binding protein (CREB), which was associated with enhanced tumor-cell growth. Wnt5a, a ligand of ROR1, could induce ROR1-dependent signaling and enhance cell growth. This study demonstrates that ROR1 is expressed in human breast cancers and has biological and clinical significance, indicating that it may be a potential target for breast cancer therapy

Operating and Thermal Efficiency Boundary Expansion of Argon Power Cycle Hydrogen Engine

The efficiency enhancement of argon power cycle engines through theoretical means has been substantiated. However, the escalation of in-cylinder temperatures engenders abnormal combustion phenomena, impeding the augmentation of compression ratios and practical efficiency. This study presents a comprehensive investigation employing experimental and simulation techniques, aiming to extend the boundaries of thermal efficiency and operational capabilities for hydrogen-powered argon cycle engines. The impact of hydrogen direct injection, intake boost, and port water injection is evaluated in conjunction with an argon power cycle hydrogen engine. The hydrogen direct injection, particularly at an engine speed of 1000 rpm, significantly increases the indicated mean effective pressure from 0.39 MPa to 0.72 Mpa, surpassing the performance of the port hydrogen injection. Manipulating the hydrogen direct injection timing results in the formation of a stratified mixture, effectively attenuating the combustion rate, and resolving the issue of excessively rapid hydrogen combustion within an Ar/O2 environment. The implementation of super lean combustion, combined with intake-boosting, achieves a maximum gross indicated thermal efficiency of 57.89%. Furthermore, the port water injection proves to be an effective measure against knock, broadening the operational range of intake-boosted conditions. Notably, the maximum gross indicated thermal efficiency recorded for the port water injection group under intake-boosted conditions reaches 59.35%