In ultrasound inverse problems, the integral equation can be nonlinear, ill-posed, and computationally expensive. One approach to solving such problems is the conjugate gradient (CG) method. A key parameter in the CG method is the conjugate gradient direction. In this paper, we investigate the CG directions proposed by Polyak et al. (PPR), Hestenes and Stiefel (HS), Fletcher and Reeves (FR), Da...

Greenland ice-core δ(18)O-temperature reconstructions suggest a dramatic cooling during the Younger Dryas (YD; 12.9-11.7 ka), with temperatures being as cold as the earlier Oldest Dryas (OD; 18.0-14.6 ka) despite an approximately 50 ppm rise in atmospheric CO(2). Such YD cooling implies a muted Greenland climate response to atmospheric CO(2), contrary to physical predictions of an enhanced high...

The effects of the Younger Dryas (YD) fluctuation on Late Pleistocene hunter-gatherers' settlement and subsistence systems in southern Alps are poorly known. This is primarily due to scarcity archaeological sites dating from YD, contrast with extensive evidence available lateglacial interstadial early Holocene. Here, we present initial stratigraphic, chronologic geoarchaeological data collected...

Wittke et al. (1) present evidence of a major cosmic impact at the onset of the Younger Dryas (YD) episode, including some markers found in the top of the well-known Usselo marker horizon (UH). This finding is contrary to our extensive radiocarbon dating effort from this horizon (2), which shows that the UH at Aalsterhut postdates the onset of the YD. Furthermore, Wittke et al. (1) misinterpret...

CKD-602 (7-[2-(N-isopropylamino) ethyl]-(20S)-camptothecin, belotecan) is a synthetic water-soluble camptothecin derivative and topoisomerase I inhibitor that has been shown to exert a clinical anticancer effect on various types of tumor. In the present study, the anticancer effects of CKD-602 on the following three human oral squamous cell carcinoma (OSCC) cell lines originating from Korean ca...

The effects of la,25-dihydrox>vitamin D., (YD3) on proliferation, differentiation, and macromolecular synthesis in the new Philadelphia chromosome-positive chronic myelogenous leukemia cell line, RVVLeu4, were investigated. Binding of ['11]VI>, was saturable, with approxi mately 2000-3000 sites/cell, and half-maximal binding occurring at 0.210.33 nM. Treatment of R\VLeu-4 cells with VDj induced...

A new algorithm for extraction of asymmetries from polarized leptonnucleon scattering data is proposed. The algorithm is stable to set-up acceptance and/or luminosity monitor acceptance variations. A statistical test for checking the data quality is proposed. PACS: 13.88.+e, 13.60.Hb; MSC: 62-07; key words: method, polarization, nucleon, asymmetry, spin Dr.N.Gagunashvili, Laboratory of Particle...

Reconstructing the spatial and temporal response of mountain glaciers to rapid climate change in past provides access effects current change. Yet, variability glacier fluctuations is not fully understood. In this study, we focus on timing European Alps during Younger Dryas/Early Holocene (YD/EH) transition. an effort elucidate whether were synchronous period, present a new chronology Alpine Tal...

and Applied Analysis 3 an evolution triple V ⊂ H ⊂ V ∗ see, e.g., 8 with dense and compact embeddings. We denote by 〈·, ·〉V the duality of V and its dual V ∗, by ‖ · ‖V ∗ the norm in V ∗. We have 〈u, v〉V u, v H for all u ∈ H and v ∈ V . We admit the following hypotheses. H C the linear symmetric viscosity operator C : Ω×Yd → Yd satisfies the Carathéodory condition i.e., C ·, ε is measurable onΩ...

The objective of this study was to estimate variance components and genetic parameters for lactation milk yield (LY), lactation length (LL), average milk yield per day (YD), initial milk yield (IY), peak milk yield (PY), days to peak (DP) and parameters (ln(a) and c) of the modified incomplete gamma function (MIG) in an Ethiopian multibreed dairy cattle population. The dataset was composed of 5...