A5085257858- Geomagnetism and Paleomagnetism Studies
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- Magnetic Properties and Applications
- Geology and Paleoclimatology Research
- Lung Cancer Treatments and Mutations
- Characterization and Applications of Magnetic Nanoparticles
- Iron oxide chemistry and applications
- Orthopaedic implants and arthroplasty
- Orthopedic Infections and Treatments
- Magnetic properties of thin films
- Total Knee Arthroplasty Outcomes
- Magnetic Properties of Alloys
- Magnetic and Electromagnetic Effects
- Planetary Science and Exploration
- Lung Cancer Research Studies
- High-pressure geophysics and materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Geochemistry and Geologic Mapping
- Lung Cancer Diagnosis and Treatment
- Cancer Treatment and Pharmacology
- Paleontology and Stratigraphy of Fossils
- Magnetic Properties and Synthesis of Ferrites
- Geological and Geophysical Studies
Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry
2020-2024
Royal Orthopaedic Hospital
2012-2024
Charles University
2021-2024
University of Toronto
2010-2021
Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
2019-2021
University of Utah
2012-2020
Czech Academy of Sciences
2020
Beatson West of Scotland Cancer Centre
1995-2017
Glasgow Royal Infirmary
1982-2015
Ninewells Hospital
2007-2009
Share Icon Twitter Facebook Reddit LinkedIn Reprints and Permissions Cite Search Site Citation David Dunlop, Özden Özdemir, Michael D. Fuller; Rock Magnetism: Fundamentals Frontiers. Physics Today 1 September 1998; 51 (9): 64–66. https://doi.org/10.1063/1.882466 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto suggest filter your All ContentPhysics Advanced
In glucocorticoid-treated rat thymocytes and the murine lymphoid cell lines L5178 S49 morphology of apoptosis is associated with chromatin cleavage. The cleavage at internucleosomal sites, apparently through activation an endogenous endonuclease. variants selected for resistance to glucocorticoid, neither nor were observed after steroid treatment, receptors undetectable. thymocytes, both morphological changes inhibited by cycloheximide actinomycin D. calcium-magnesium ionophore A23187...
Although most paleomagnetic and environmental magnetic papers incorporate a Day plot of the hysteresis parameters M rs / s versus H cr c , comprehensive theory covering superparamagnetic (SP), single‐domain (SD), pseudo‐single‐domain (PSD), multidomain (MD) (titano)magnetites is lacking. There no consensus on how to quantify grain‐size trends within plot, distinguish MD from SP trends/mixtures, or whether magnetite, titanomagnetites, other minerals have distinctive by which they might be...
A score based on the combination of systemic inflammatory response and albumin hazards ratio (HR) 1.70, 95% CI 1.23 - 2.35, P=0.001) was comparable in prognostic value to that stage performance status (HR 1.48, 1.12 1.95, P=0.006) patients with inoperable non-small-cell lung cancer. The former is simple measure well standardised.
New theoretical curves relating the hysteresis parameters M rs / s and H cr c for single‐domain (SD), superparamagnetic (SP), pseudo‐single‐domain (PSD), multidomain (MD) grains their mixtures are applied to published data natural materials. The Day plot of versus has been used crudely classify samples into box‐like SD, PSD, MD (or sometimes incorrectly, + SP) regions with arbitrary boundaries. type MD, PSD/SD SD SP permit more subtle precise modeling. predicted trend its junction PSD...
At the Verwey transition (T v ≈110–120 K), magnetite transforms from monoclinic to cubic spinel structure. It has long been believed that magnetic remanence and susceptibility would change markedly at T in case of coarse grains but only slightly or inappreciably fine (<1 µm) grains. We find on contrary changes by 50–80% both large small crystals, if they are stoichiometric. However, minor surface oxidation suppresses transition, fact oxidize more readily leads an apparent size dependence....
Particle size distributions have been obtained by grain counts on electron micrographs of four samples containing submicroscopic equant magnetite particles. Blocking temperature data indicate thermally unstable (superparamagnetic, SPM) magnetic behavior in one sample whose grains range from 100 to 650 A size. The SPM is confirmed a large increase saturation remanence when the hysteresis measured at 77°K. Quantitative estimates SPM, single-domain (SD), and multidomain (MD) magnetization...
Fluorescence exclusively occurs from the lowest excited state of a given multiplicity according to Kasha's rule. However, this rule is not obeyed by handful anti-Kasha fluorophores whose underlying mechanism still understood merely on phenomenological basis. This lack understanding prevents rational design and property-tuning fluorophores. Here, we propose model explaining photophysical properties an archetypal fluorophore, azulene, based its ground- excited-state (anti)aromaticity. We...
The value of an inflammation-based prognostic score (GPS) was compared with performance status (ECOG) in patients (n=109) receiving platinum-based chemotherapy for inoperable non-small-cell lung cancer. On multivariate analysis ECOG, white cell count and the GPS entered as covariates, only a significant independent predictor survival (HR 1.88, 95% CI 1.25–2.84, P=0.002).
PURPOSE: A phase III trial, Cisplatin and Tirapazamine in Subjects with Advanced Previously Untreated Non–Small-Cell Lung Tumors (CATAPULT I), was designed to determine the efficacy safety of tirapazamine plus cisplatin for treatment non–small-cell lung cancer (NSCLC). PATIENTS AND METHODS: Patients previously untreated NSCLC were randomized receive either (390 mg/m 2 infused over hours) followed 1 hour later by (75 hour) or 75 alone, every 3 weeks a maximum eight cycles. RESULTS: total 446...
This paper reports room temperature measurements of initial susceptibility χ 0 , second Rayleigh coefficient B, coercive force H c remanent R and the ratio J rs /J s near‐saturation induced magnetizations for four samples containing single‐crystal magnetite cubes with mean sizes 0.037, 0.076, 0.10, 0.22 μm. While o have weak dependences on particle size d, vary strongly size, as d −0.55 −0.75 respectively, over 0.076–0.22 μm range. These hysteresis properties their are incompatible data...
The demagnetizing tensor for ferromagnets is generalized to include interactions between uniformly magnetized bodies. This “mutual” symmetric, has a trace of zero, and other simple geometric properties. then used develop an expression the macroscopic magnetic field in non‐uniformly bodies arbitrary shape. Finally, theory applied block model magnetization explicit formulae components are given.
Treatment and survival of patients with inoperable Non-small-cell lung cancer in 1997 (n=117) 2001 (n=126), before after the introduction a multidisciplinary team, was examined single centre. There were no differences age, sex extent deprivation between two years. However, 2001, 23% received chemotherapy treatment compared 7% (P<0.001). Median 6.6 months 3.2
The Néel theory of magnetization relaxation has been systematically and quantitatively tested for six samples containing synthetic natural single domain grains. results a wide range experiments involving time, temperature, direct alternating magnetic fields were compared with theoretical predicted by using the experimental grain size‐coercivity distribution each sample. Good agreement was found many small field remanences, where interaction effects are negligible. Most discordant could be...
A method of deriving the remanent coercivity spectrum from isothermal remanence vs. applied field characteristic is described and to a series Triassic sandstones late Cretaceous—early Tertiary clays limestones France. Low- (0–1 kOe), intermediate- (1–3 high- (3–18 kOe) fractions are identified with magnetite, specularite, haematite pigment respectively. In limestones, specularite only important magnetic phase; contain in addition considerable pigment; all three phases. The relative content...
Hematite is a frequently used mineral in paleomagnetic and environmental magnetic studies. Just below room temperature, it undergoes phase transition, the Morin whose nature an important part of our basic understanding hematite's magnetism memory. We have determined temperature T M transition from saturation remanence warming curves to be 250–261 K for 0.5–6 mm hematite natural single crystals, 257–260 45–600 μ m sieved crystal fractions, 241–256 submicron synthetic hematites with grain...
The discrepancy between the magnetic hysteresis properties of magnetite crystals that are precipitated from solution (<0.3 micrometer) and crushed sifted grains (>0.3 is not an inherent property but caused by highly stressed state material adhering finer fragments. size trends exhibited submicrometer-size continue in range 1 micrometer to millimeter a set hydrothermally recrystallized crystals. Coercive forces these narrowly sized follow power law over wide (0.1 millimeter) as predicted...
In environmental, soil, and sediment magnetism, it is important to be able estimate the degree of oxidation magnetite grains. We report a new method for finding parameter z semiquantitatively from cooling‐warming cycles room temperature remanences. measured magnetization M continuously stoichiometric partially oxidized magnetites with average grain sizes 37 220 nm during zero‐field cycling 2.5 T saturation isothermal remanent (SIRM) 300 K 20 back K. Oxidized were obtained by heating in air...
Purpose Cigarette smoking induces CYP1A1/1A2 and is hypothesized to alter erlotinib pharmacokinetics. This study aimed determine the maximum tolerated dose (MTD) of in advanced non–small-cell lung cancer (NSCLC) patients who smoke compare pharmacokinetics at MTD current smokers with 150 mg. Patients Methods Cohorts NSCLC currently ≥ 10 cigarettes per day for 1 year received escalating doses 14 days until dose-limiting toxicity (DLT). A separate cohort was then randomly assigned either or mg...
Flying robots capable of perch-and-stare are desirable for reconnaissance missions. Inspired by an adaptation that enables songbirds to sleep in trees without active muscle control, the research presented herein details design a passive mechanism rotorcraft perch reminiscent bird perching on tree branch. Perching is accomplished through integration compliant, underactuated gripping foot and collapsing leg converts weight into tendon tension order passively actuate foot. Analysis behavior...