Results 101 to 110 of about 3,708,738 (393)

Comment on: "Electromagnetically induced left-handedness in optically excited four-level atomic media" [PDF]

open access: yes, 2006
We discuss the recent proposal by Thommen and Mandel (Phys. Rev. Lett. {\bf 96}, 053601 (2006)) for electromagnetically induced negative refraction. Although the main conclusion of the paper -- the possibility to achieve negative refraction in an experimentally accessible atomic scheme -- remains valid, we show that the weak-excitation approximation ...
arxiv   +1 more source

Information Content of Financial Youtube Channel: Case Study of 3PROTV and Korean Stock Market [PDF]

open access: yesarXiv, 2023
We investigate the information content of 3PROTV, a south Korean financial youtube channel. In our sample we found evidence for the hypothesis that the channel have information content on stock selection, but only on negative sentiment. Positively mentioned stock had pre-announcement spike followed by steep fall in stock price around announcement ...
arxiv  

What Is the Real Negative Predictive Value of a Zero Calcium Score?

open access: yesJournal of the American College of Cardiology, 2010
In a subanalysis of the CORE64 (Coronary Evaluation Using Multi-Detector Spiral Computed Tomography Angiography Using 64 Detectors) study, Gottlieb et al. ([1][1]) evaluated whether absent coronary artery calcium (CAC) could exclude obstructive coronary stenosis in patients referred for ...
Fabio Esteves, Luis C. L. Correia
openaire   +2 more sources

The prognostic and predictive potential of Ki-67 in triple-negative breast cancer

open access: yesScientific Reports, 2020
As a cell proliferation biomarker, Ki-67 is principally used in ER+/HER2− breast cancer. However, the importance and the best cutoff point of Ki-67 in triple-negative breast cancer (TNBC) remains unclear and was evaluated in this study.A total of 1800 ...
Xiuzhi Zhu   +10 more
semanticscholar   +1 more source

Comparison of efficiency between RMI1 and RMI2 in diagnosing ovarian malignancy [PDF]

open access: yes, 2019
Background: This study was conducted in department of obstetrics and gynaecology, to know the efficiency of risk of malignancy index (RMI) to differentiate a malignant from a benign tumor and to compare the efficiency of risk of malignancy index 1 and 2 (
Kabadi, Narayan Y., Shalagar, Rashmi R.
core   +2 more sources

Unlocking the potential of tumor‐derived DNA in urine for cancer detection: methodological challenges and opportunities

open access: yesMolecular Oncology, EarlyView.
Urine is a rich source of biomarkers for cancer detection. Tumor‐derived material is released into the bloodstream and transported to the urine. Urine can easily be collected from individuals, allowing non‐invasive cancer detection. This review discusses the rationale behind urine‐based cancer detection and its potential for cancer diagnostics ...
Birgit M. M. Wever   +1 more
wiley   +1 more source

Role of HRCT for Rapid Triage of Patients with COVID-19 Pneumonia

open access: yesJournal of Rawalpindi Medical College, 2021
Background:   To assess the diagnostic performances of HRCT for COVID 19 pneumonia for efficient triage of patients, in comparison with RT-PCR reverse transcription polymerase chain reaction test.
Hina Hafeez Abbasi   +5 more
doaj   +1 more source

Identification of functional and diverse circulating cancer‐associated fibroblasts in metastatic castration‐naïve prostate cancer patients

open access: yesMolecular Oncology, EarlyView.
Cancer‐associated fibroblasts (CAFs) promote cancer growth, invasion (metastasis), and drug resistance. Here, we identified functional and diverse circulating CAFs (cCAFs) in patients with metastatic prostate cancer (mPCa). cCAFs were found in higher numbers and were functional and diverse in mPCa patients versus healthy individuals, suggesting their ...
Richell Booijink   +6 more
wiley   +1 more source

A comparative analysis of the different HIV testing techniques used in Zambia: data from a clinical performance study

open access: yesBMC Research Notes
Background Approximately 40 million people globally are living with HIV (PLWH) and more than 50% of these PLWH reside in Eastern and Southern Africa. Zambia has an adult HIV-1 prevalence (ages 15–49) of 11.1 [10.5–11.6] %, among the highest in the world (
Loveness Mukuka   +4 more
doaj   +1 more source

Comparison of the bedside head impulse test with the video head impulse test in a clinical practice setting: a prospective study of 500 outpatients.

open access: yesFrontiers in Neurology, 2016
Objectives: The primary aim was to determine the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the bedside head impulse test (bHIT) using the video HIT (vHIT) as the gold standard for quantifying the ...
Chun Wai eYip   +5 more
doaj   +1 more source

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