نتایج جستجو برای: c58
تعداد نتایج: 309 فیلتر نتایج به سال:
A new type of murine leukemia virus has been detected in thymuses of leukemic and late preleukemic AKR mice, in lymphomas developing in NIH Swiss mice carrying the AKR ectopic virus-inducing loci Akv-I or Akv-2, and in the thymus of a preleukemic C58 mouse. The viruses induce focal areas of morphologic alteration in a mink lung cell line and are tentatively referred to as "mink cell focus-induc...
Motivated by the need of a positive-semidefinite estimator of multivariate realized covariance matrices, we model noisy and asynchronous ultra-high-frequency asset prices in a state-space framework with missing data. We then estimate the covariance matrix of the latent states through a Kalman smoother and Expectation Maximization (KEM) algorithm. Iterating between the two EM steps, we obtain a ...
This paper focuses on the theory of uncovered interest rate parity and whether interest-rate differentials have resulted in the higher interest rate currency depreciating over time. Previous literature has empirically rejected the theory indicating that higher interest rate currencies have actually appreciated relative to lower interest rate currencies. In this paper, uncovered interest rate pa...
Article history: Received 11 October 2012 Received in revised form 3 November 2014 Accepted 3 November 2014 Available online 11 November 2014 In this paper, we investigate the dynamic response of stock market volatility to changes in monetary policy. Using a vector autoregressive model, our findings reveal a significant response of stock returns and volatility to monetary policy shocks. While t...
Several lines of evidence suggest that endocytosis of MHC class I molecules requires conserved motifs within the cytoplasmic domain. In this study, we show, in the C58 rat thymoma cell line transfected with HLA-B27 molecules, that replacement of the highly conserved tyrosine (Tyr320) in the cytoplasmic domain of HLA-B27 does not hamper cell surface expression of beta2-microglobulin H chain hete...
Article history: Received 30 May 2014 Received in revised form 11 January 2015 Accepted 16 March 2015 Available online xxxx Themechanismof risk responses tomarket shocks is considered as stagnant in recent financial literature, whether during normal or stress periods. Since the returns are heteroskedastic, a little considerationwas given to volatility structural breaks and diverse states. In th...
This paper analyzes the mean reversion and unit root properties of general diffusion models and their discrete samples. In particular, we find that the Dickey-Fuller unit root test applied to discrete samples from a diffusion model becomes a test of no mean reversion rather than a unit root, or more generally, nonstationarity in the underlying diffusion. The unit root test has a well defined li...
While economic variables have been used extensively to forecast the U.S. bond risk premia, little attention has been paid to the use of technical indicators which are widely employed by practitioners. In this paper, we fill this gap by studying the predictive ability of using a variety of technical indicators vis-á-vis the economic variables. We find that the technical indicators have significa...
The family Rhizobiaceae contains plant-associated bacteria with critical roles in ecology and agriculture. Within this family, many Rhizobium and Sinorhizobium strains are nitrogen-fixing plant mutualists, while many strains designated as Agrobacterium are plant pathogens. These contrasting lifestyles are primarily dependent on the transmissible plasmids each strain harbors. Members of the Rhiz...
40 Voltage-gated sodium (Na) channels are composed of a pore-forming α subunit and one 41 or more auxiliary β subunits. The present study investigated the regulation by the β 42 subunit of two Na channels (Nav1.6, Nav1.8) expressed in dorsal root ganglion (DRG) 43 neurons. Single-cell RT-PCR was used to show that Nav1.8, Nav1.6, and the β1-β3 44 subunits were widely expressed in individually ha...
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