We combine time resolved pump-probe Magneto-Optical Kerr Effect and Photoelectron Spectroscopy ex... more We combine time resolved pump-probe Magneto-Optical Kerr Effect and Photoelectron Spectroscopy experiments supported by theoretical analysis to determine the relaxation dynamics of delocalized electrons in half-metallic ferromagnetic manganite La1-xSrxMnO3. We observe that the half-metallic character of La1-xSrxMnO3 determines the timescale of both the electronic phase transition and the quenching of magnetization, revealing a quantum isolation of the spin system in double exchange ferromagnets extending up to hundreds of picoseconds. We demonstrate the use of time-resolved hard X-ray photoelectron spectroscopy (TR-HAXPES) as a unique tool to single out the evolution of strongly correlated electronic states across a second-order phase transition in a complex material.
Structural and magnetic properties of 1-10 nm thick Fe films deposited on GaN(0001) were investig... more Structural and magnetic properties of 1-10 nm thick Fe films deposited on GaN(0001) were investigated. In-situ reflecting high energy electron diffraction images indicated a a-Fe(110)/ GaN(0001) growth of the 3D Volmer-Weber type. The a-Fe(110) X-ray diffraction peak showed a 1 full-width at half-maximum, indicating %20 nm grain sizes. A significant reduction in Fe atomic moment from its bulk value was observed for films thinner than 4 nm. Both GaN/Fe interface roughness and Fe film coercivity increased with Fe thickness, indicating a possible deterioration of Fe crystalline quality. Magnetic anisotropy was mainly uniaxial for all films while hexagonal anisotropies appeared for thicknesses higher than 3.7 nm.
Ferromagnetic metal-organic semiconductor (FM-OSC) hybrid interfaces have shown to play an import... more Ferromagnetic metal-organic semiconductor (FM-OSC) hybrid interfaces have shown to play an important role for spin injection in organic spintronics. Here, 11,11,12,12tetracyanonaptho-2,6-quinodimethane (TNAP) is introduced as an interfacial layer in Co-OSCs heterojunction with an aim to tune the spin injection. The Co/TNAP interface is investigated by use of X-ray and ultraviolet photoelectron spectroscopy (XPS/UPS), near edge X-ray absorption fine structure (NEXAFS) and X-ray magnetic circular dichroism (XMCD). Hybrid interface states (HIS) are observed at Co/TNAP interface resulting from chemical interaction between Co and TNAP. The energy level alignment at Co/TNAP/OSCs interface is also obtained, and a reduction of the hole injection barrier is demonstrated. XMCD results confirm sizeable spin polarization at the Co/TNAP hybrid interface.
The outgrowth formation in inorganic thin films is a dramatic problem that has limited the techno... more The outgrowth formation in inorganic thin films is a dramatic problem that has limited the technological impact of many techniques and materials. Outgrowths are often themselves part of the films, but are detrimental for vertical junctions since they cause short-circuits or work as defects, compromising the reproducibility and in some cases the operation of the corresponding devices. The problem of outgrowth is particularly relevant in ablation-based methods and in some complex oxides, but is present in a large variety of systems and techniques. Here we propose an efficient local electrochemical method to selectively decompose the outgrowths of conductive oxide thin films by electrochemical decomposition, without altering the properties of the background film. The process is carried out using the same set-up as for local oxidation nanolithography, except for the sign of the voltage bias and it works at the nanoscale both as serial method using a scanning probe and as parallel method...
The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)... more The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)/Alq3/Si hybrid structures was systematically studied by means of atomic force microscopy, SQUID magnetometry and nuclear magnetic resonance (NMR). All used techniques pointed out that the barrier thickness of 2 nm is required to obtain a magnetically good cobalt layer on top of Alq3. 59 Co NMR measurements revealed that the AlOx barrier gives rise to the formation of an interface layer with "defective" cobalt favouring growth of "bulk" cobalt with good magnetic properties.
Pentacene thin films deposited on a ferromagnetic electrode, La 0.7 Sr 0.3 MnO 3 ͑LSMO͒, have bee... more Pentacene thin films deposited on a ferromagnetic electrode, La 0.7 Sr 0.3 MnO 3 ͑LSMO͒, have been studied using near-edge x-ray absorption fine structure ͑NEXAFS͒, ultraviolet photoemission spectroscopy ͑UPS͒, and atomic force microscopy ͑AFM͒. Here we present electronic structure and molecular orientation of pentacene thin film on LSMO. No evidence related to covalent bonding or significant charge transfer between pentacene and LSMO has been found in the NEXAFS or UPS results. UPS measurements suggest that the vertical ionization potential of pentacene on LSMO is 4.9 eV. Our results extracted from NEXAFS indicate that molecular long axis of pentacene stands on the LSMO substrate surface with a tilt angle of about 22°Ϯ 2°b etween the main molecular axis and the substrate surface normal. AFM images show the terracelike crystalline grain formed by stacking pentacene crystalline layers and a rough crystal-layer spacing of 14-15 Å. Findings deduced from UPS, NEXAFS, and AFM consistently demonstrate that pentacene stands on LSMO with a tilt angle.
We propose a spintronic metal oxide semiconductor field effect transistor (spin MOSFET) where a s... more We propose a spintronic metal oxide semiconductor field effect transistor (spin MOSFET) where a spin gapless semiconductor (SGS) constitutes the channel and the drain is a ferromagnetic metal. SGS exhibit a non-zero band gap in only one of the spin sub-bands and feature complete spin polarization at finite temperature. We present an analytical model of the device and comment the properties relevant for devices applications. Our results boost SGS as a new paradigm for the spin MOSFET concept.
Transport characterizations of epitaxial La0.7Sr0.3MnO3 thin films in the thickness range 5-40 nm... more Transport characterizations of epitaxial La0.7Sr0.3MnO3 thin films in the thickness range 5-40 nm and 25-410 K temperature interval have been accurately collected. We show that taking into account polaronic effects allows to achieve the best ever fitting of the transport curves in the whole temperature range. The Current Carriers Density Collapse picture accurately accounts for the properties variation across the metal-insulator-transition. The electron-phonon coupling parameter estimations are in a good agreement with theoretical predictions. The results promote a clear and straightforward quantitative description of the manganite films involved in charge transport device applications.
this paper are Mn2CoAl, CrVZrAl, CoVZrAl, and NiFe2O4 alone, we expect that the insight we provid... more this paper are Mn2CoAl, CrVZrAl, CoVZrAl, and NiFe2O4 alone, we expect that the insight we provide is relevant to other classes of such materials as well.
The magnetic and magnetotransport properties of Ni 80 Fe 20 /La 0.7 Sr 0.3 MnO 3 (NiFe/LSMO) bila... more The magnetic and magnetotransport properties of Ni 80 Fe 20 /La 0.7 Sr 0.3 MnO 3 (NiFe/LSMO) bilayers were investigated after bombarding the LSMO surface with low-energy Ar + or O 2 + /Ar + ion beams before the growth of the top NiFe layer. A variety of magnetic properties are revealed, including an asymmetric two-stepped hysteresis loop with an exchange bias loop shift, and alternatively, a symmetric two-stepped hysteresis loop with an enhanced coercivity. Polarized neutron reflectometry measurements provide details of the magnetic depth profile and interface layer magnetism at different temperatures. The LSMO surface modifications determine a complex magnetic and electric NiFe/ LSMO interface having a strong effect on the magnetoresistance of the bilayer. Surface engineering based on ion beam bombardment is presented as a promising technique for optimizing the electronic and magnetic properties of NiFe/LSMO junctions for future device applications.
In the rapidly growing field of spintronics, simultaneous control of electronic and magnetic prop... more In the rapidly growing field of spintronics, simultaneous control of electronic and magnetic properties is essential, and the perspective of building novel phases is directly linked to the control of tuning parameters, for example, thickness and doping. Looking at the relevant effects in interface-driven spintronics, the reduced symmetry at a surface and interface corresponds to a severe modification of the overlap of electron orbitals, that is, to a change of electron hybridization. Here we report a chemically and magnetically sensitive depth-dependent analysis of two paradigmatic systems, namely La1-xSrxMnO3 and (Ga,Mn)As. Supported by cluster calculations, we find a crossover between surface and bulk in the electron hybridization/correlation and we identify a spectroscopic fingerprint of bulk metallic character and ferromagnetism versus depth. The critical thickness and the gradient of hybridization are measured, setting an intrinsic limit of 3 and 10 unit cells from the surface,...
Molecular and organic spintronics offers the opportunity to play with chemical versatility and to... more Molecular and organic spintronics offers the opportunity to play with chemical versatility and to bring the spin degree of freedom to electronics devices. We will show how, as a contender to commonly used inorganic materials, organic/molecular based spintronics devices can exhibit very large magnetoresistance and lead to tailored spin polarizations. First we will report on giant tunnel magnetoresistance of up
Molecular and organic spintronics offers the opportunity to play with chemical versatility and to... more Molecular and organic spintronics offers the opportunity to play with chemical versatility and to bring the spin degree of freedom to electronics devices. We will show how, as a contender to commonly used inorganic materials, organic/molecular based spintronics devices can exhibit very large magnetoresistance and lead to tailored spin polarizations. First we will report on giant tunnel magnetoresistance of up
The aim of our study was to examine cardiovascular autonomic regulation, assessed by time-domain ... more The aim of our study was to examine cardiovascular autonomic regulation, assessed by time-domain measures of Heart Rate Variability ( HRV ), in a group of mild to moderate hypertensive subjects,compared to normotensives. We examined 14 patients (13 men,1 woman) with mean age 49.3Ϯ5.4 years and 14 normotensives (11 men,3 women) with mean age 48Ϯ7.1 years. All hypertensive patients were requested to stop their therapy 3 days before the test. We performed an echocardiographic exam on each subject . The results showed significant differences between the two groups,concerning left ventricular SIV and posterior wall thickness,as well as left atrium dimension and early and late ventricular filling ratio. All subjects underwent a 24-hour Holter recording,in order to assess important time-domain parameters of HRV,such as SDNN ( standard deviation of all normal R-R intervals) and Pnn50 ( percentage of consecutive R-R intervals longer than 50 msec). Both these parameters showed significant differences between the two groups. In fact we have found in the hypertensive group a lower SDNN ( 145.14Ϯ15 msec versus 185.23Ϯ16.2 msec),as well as a significantly lower Pnn50 ( 11.44Ϯ5.6 versus 16.2Ϯ5.4 ). Our data,consistent with several international studies,confirm the importance of the increased sympathetic activity in the developing of hypertension,not only in the early stage of the disease,but also in patients with long-term hypertension,already showing signs of left ventricular hypertrophy.
To examine the distribution of cortical opacities across the lens in the Italian-American Natural... more To examine the distribution of cortical opacities across the lens in the Italian-American Natural History Study of Age-Related Cataract and to study the association between an index of sunlight exposure and the location of cortical cataract within the lens. Lens photographs of one eye of 731 persons with cortical opacities (503 with pure and 228 with mixed types of opacity) were included in the analysis. A radial grid superimposed on the photographs was used to assess presence, location, and severity of wedge-shaped cortical opacities. Both the prevalence and the extent of cortical opacities were highest in the inferior-nasal quadrant and lowest in the superior-nasal quadrant of the lens. In polychotomous logistic regression, persons with the greatest excess areal involvement in the inferior half of the lens were more likely to have high exposure to sunlight, as measured by a sunlight index, than persons with excess involvement in the superior half of the lens (odds ratio, 1.73; 95%...
To compare the relationship between logMAR visual acuity (VA) and cataract severity and between c... more To compare the relationship between logMAR visual acuity (VA) and cataract severity and between contrast sensitivity (CS) and cataract severity in pure types of age-related lens opacities. Analysis included patients followed in the ongoing Italian-American Study of the Natural History of Age-Related Cataract. Lens opacities were classified and graded according to the Lens Opacities Classification System II (LOCS II). Visual acuity was measured with the Early Treatment Diabetic Retinopathy Study Chart. Contrast sensitivity was measured with the Pelli-Robson chart. Data from 1,076 eyes were used for the analysis (366 clear lenses; 550, 124, and 36 eyes with cortical, nuclear and posterior subcapsular cataract, respectively). In age-adjusted analyses, increasing severity of all three cataract types was associated with progressively higher logMAR VA, which translates into poorer acuity, and lower CS scores. For both VA and CS, the effect of increasing severity was greatest for nuclear a...
Many clinical reports have shown that arterial hypertension is correlated with a higher risk of s... more Many clinical reports have shown that arterial hypertension is correlated with a higher risk of severe ventricular arrhythmias and sudden cardiac death.Left ventricular hypertrophy, related to hypertension, is particularly considered an independent risk factor for both ventricular arrhythmias and sudden death.The aim of our study was to examine a possible correlation between an unbalanced sympatho-vagal function, assessed by several time
We combine time resolved pump-probe Magneto-Optical Kerr Effect and Photoelectron Spectroscopy ex... more We combine time resolved pump-probe Magneto-Optical Kerr Effect and Photoelectron Spectroscopy experiments supported by theoretical analysis to determine the relaxation dynamics of delocalized electrons in half-metallic ferromagnetic manganite La1-xSrxMnO3. We observe that the half-metallic character of La1-xSrxMnO3 determines the timescale of both the electronic phase transition and the quenching of magnetization, revealing a quantum isolation of the spin system in double exchange ferromagnets extending up to hundreds of picoseconds. We demonstrate the use of time-resolved hard X-ray photoelectron spectroscopy (TR-HAXPES) as a unique tool to single out the evolution of strongly correlated electronic states across a second-order phase transition in a complex material.
Structural and magnetic properties of 1-10 nm thick Fe films deposited on GaN(0001) were investig... more Structural and magnetic properties of 1-10 nm thick Fe films deposited on GaN(0001) were investigated. In-situ reflecting high energy electron diffraction images indicated a a-Fe(110)/ GaN(0001) growth of the 3D Volmer-Weber type. The a-Fe(110) X-ray diffraction peak showed a 1 full-width at half-maximum, indicating %20 nm grain sizes. A significant reduction in Fe atomic moment from its bulk value was observed for films thinner than 4 nm. Both GaN/Fe interface roughness and Fe film coercivity increased with Fe thickness, indicating a possible deterioration of Fe crystalline quality. Magnetic anisotropy was mainly uniaxial for all films while hexagonal anisotropies appeared for thicknesses higher than 3.7 nm.
Ferromagnetic metal-organic semiconductor (FM-OSC) hybrid interfaces have shown to play an import... more Ferromagnetic metal-organic semiconductor (FM-OSC) hybrid interfaces have shown to play an important role for spin injection in organic spintronics. Here, 11,11,12,12tetracyanonaptho-2,6-quinodimethane (TNAP) is introduced as an interfacial layer in Co-OSCs heterojunction with an aim to tune the spin injection. The Co/TNAP interface is investigated by use of X-ray and ultraviolet photoelectron spectroscopy (XPS/UPS), near edge X-ray absorption fine structure (NEXAFS) and X-ray magnetic circular dichroism (XMCD). Hybrid interface states (HIS) are observed at Co/TNAP interface resulting from chemical interaction between Co and TNAP. The energy level alignment at Co/TNAP/OSCs interface is also obtained, and a reduction of the hole injection barrier is demonstrated. XMCD results confirm sizeable spin polarization at the Co/TNAP hybrid interface.
The outgrowth formation in inorganic thin films is a dramatic problem that has limited the techno... more The outgrowth formation in inorganic thin films is a dramatic problem that has limited the technological impact of many techniques and materials. Outgrowths are often themselves part of the films, but are detrimental for vertical junctions since they cause short-circuits or work as defects, compromising the reproducibility and in some cases the operation of the corresponding devices. The problem of outgrowth is particularly relevant in ablation-based methods and in some complex oxides, but is present in a large variety of systems and techniques. Here we propose an efficient local electrochemical method to selectively decompose the outgrowths of conductive oxide thin films by electrochemical decomposition, without altering the properties of the background film. The process is carried out using the same set-up as for local oxidation nanolithography, except for the sign of the voltage bias and it works at the nanoscale both as serial method using a scanning probe and as parallel method...
The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)... more The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)/Alq3/Si hybrid structures was systematically studied by means of atomic force microscopy, SQUID magnetometry and nuclear magnetic resonance (NMR). All used techniques pointed out that the barrier thickness of 2 nm is required to obtain a magnetically good cobalt layer on top of Alq3. 59 Co NMR measurements revealed that the AlOx barrier gives rise to the formation of an interface layer with "defective" cobalt favouring growth of "bulk" cobalt with good magnetic properties.
Pentacene thin films deposited on a ferromagnetic electrode, La 0.7 Sr 0.3 MnO 3 ͑LSMO͒, have bee... more Pentacene thin films deposited on a ferromagnetic electrode, La 0.7 Sr 0.3 MnO 3 ͑LSMO͒, have been studied using near-edge x-ray absorption fine structure ͑NEXAFS͒, ultraviolet photoemission spectroscopy ͑UPS͒, and atomic force microscopy ͑AFM͒. Here we present electronic structure and molecular orientation of pentacene thin film on LSMO. No evidence related to covalent bonding or significant charge transfer between pentacene and LSMO has been found in the NEXAFS or UPS results. UPS measurements suggest that the vertical ionization potential of pentacene on LSMO is 4.9 eV. Our results extracted from NEXAFS indicate that molecular long axis of pentacene stands on the LSMO substrate surface with a tilt angle of about 22°Ϯ 2°b etween the main molecular axis and the substrate surface normal. AFM images show the terracelike crystalline grain formed by stacking pentacene crystalline layers and a rough crystal-layer spacing of 14-15 Å. Findings deduced from UPS, NEXAFS, and AFM consistently demonstrate that pentacene stands on LSMO with a tilt angle.
We propose a spintronic metal oxide semiconductor field effect transistor (spin MOSFET) where a s... more We propose a spintronic metal oxide semiconductor field effect transistor (spin MOSFET) where a spin gapless semiconductor (SGS) constitutes the channel and the drain is a ferromagnetic metal. SGS exhibit a non-zero band gap in only one of the spin sub-bands and feature complete spin polarization at finite temperature. We present an analytical model of the device and comment the properties relevant for devices applications. Our results boost SGS as a new paradigm for the spin MOSFET concept.
Transport characterizations of epitaxial La0.7Sr0.3MnO3 thin films in the thickness range 5-40 nm... more Transport characterizations of epitaxial La0.7Sr0.3MnO3 thin films in the thickness range 5-40 nm and 25-410 K temperature interval have been accurately collected. We show that taking into account polaronic effects allows to achieve the best ever fitting of the transport curves in the whole temperature range. The Current Carriers Density Collapse picture accurately accounts for the properties variation across the metal-insulator-transition. The electron-phonon coupling parameter estimations are in a good agreement with theoretical predictions. The results promote a clear and straightforward quantitative description of the manganite films involved in charge transport device applications.
this paper are Mn2CoAl, CrVZrAl, CoVZrAl, and NiFe2O4 alone, we expect that the insight we provid... more this paper are Mn2CoAl, CrVZrAl, CoVZrAl, and NiFe2O4 alone, we expect that the insight we provide is relevant to other classes of such materials as well.
The magnetic and magnetotransport properties of Ni 80 Fe 20 /La 0.7 Sr 0.3 MnO 3 (NiFe/LSMO) bila... more The magnetic and magnetotransport properties of Ni 80 Fe 20 /La 0.7 Sr 0.3 MnO 3 (NiFe/LSMO) bilayers were investigated after bombarding the LSMO surface with low-energy Ar + or O 2 + /Ar + ion beams before the growth of the top NiFe layer. A variety of magnetic properties are revealed, including an asymmetric two-stepped hysteresis loop with an exchange bias loop shift, and alternatively, a symmetric two-stepped hysteresis loop with an enhanced coercivity. Polarized neutron reflectometry measurements provide details of the magnetic depth profile and interface layer magnetism at different temperatures. The LSMO surface modifications determine a complex magnetic and electric NiFe/ LSMO interface having a strong effect on the magnetoresistance of the bilayer. Surface engineering based on ion beam bombardment is presented as a promising technique for optimizing the electronic and magnetic properties of NiFe/LSMO junctions for future device applications.
In the rapidly growing field of spintronics, simultaneous control of electronic and magnetic prop... more In the rapidly growing field of spintronics, simultaneous control of electronic and magnetic properties is essential, and the perspective of building novel phases is directly linked to the control of tuning parameters, for example, thickness and doping. Looking at the relevant effects in interface-driven spintronics, the reduced symmetry at a surface and interface corresponds to a severe modification of the overlap of electron orbitals, that is, to a change of electron hybridization. Here we report a chemically and magnetically sensitive depth-dependent analysis of two paradigmatic systems, namely La1-xSrxMnO3 and (Ga,Mn)As. Supported by cluster calculations, we find a crossover between surface and bulk in the electron hybridization/correlation and we identify a spectroscopic fingerprint of bulk metallic character and ferromagnetism versus depth. The critical thickness and the gradient of hybridization are measured, setting an intrinsic limit of 3 and 10 unit cells from the surface,...
Molecular and organic spintronics offers the opportunity to play with chemical versatility and to... more Molecular and organic spintronics offers the opportunity to play with chemical versatility and to bring the spin degree of freedom to electronics devices. We will show how, as a contender to commonly used inorganic materials, organic/molecular based spintronics devices can exhibit very large magnetoresistance and lead to tailored spin polarizations. First we will report on giant tunnel magnetoresistance of up
Molecular and organic spintronics offers the opportunity to play with chemical versatility and to... more Molecular and organic spintronics offers the opportunity to play with chemical versatility and to bring the spin degree of freedom to electronics devices. We will show how, as a contender to commonly used inorganic materials, organic/molecular based spintronics devices can exhibit very large magnetoresistance and lead to tailored spin polarizations. First we will report on giant tunnel magnetoresistance of up
The aim of our study was to examine cardiovascular autonomic regulation, assessed by time-domain ... more The aim of our study was to examine cardiovascular autonomic regulation, assessed by time-domain measures of Heart Rate Variability ( HRV ), in a group of mild to moderate hypertensive subjects,compared to normotensives. We examined 14 patients (13 men,1 woman) with mean age 49.3Ϯ5.4 years and 14 normotensives (11 men,3 women) with mean age 48Ϯ7.1 years. All hypertensive patients were requested to stop their therapy 3 days before the test. We performed an echocardiographic exam on each subject . The results showed significant differences between the two groups,concerning left ventricular SIV and posterior wall thickness,as well as left atrium dimension and early and late ventricular filling ratio. All subjects underwent a 24-hour Holter recording,in order to assess important time-domain parameters of HRV,such as SDNN ( standard deviation of all normal R-R intervals) and Pnn50 ( percentage of consecutive R-R intervals longer than 50 msec). Both these parameters showed significant differences between the two groups. In fact we have found in the hypertensive group a lower SDNN ( 145.14Ϯ15 msec versus 185.23Ϯ16.2 msec),as well as a significantly lower Pnn50 ( 11.44Ϯ5.6 versus 16.2Ϯ5.4 ). Our data,consistent with several international studies,confirm the importance of the increased sympathetic activity in the developing of hypertension,not only in the early stage of the disease,but also in patients with long-term hypertension,already showing signs of left ventricular hypertrophy.
To examine the distribution of cortical opacities across the lens in the Italian-American Natural... more To examine the distribution of cortical opacities across the lens in the Italian-American Natural History Study of Age-Related Cataract and to study the association between an index of sunlight exposure and the location of cortical cataract within the lens. Lens photographs of one eye of 731 persons with cortical opacities (503 with pure and 228 with mixed types of opacity) were included in the analysis. A radial grid superimposed on the photographs was used to assess presence, location, and severity of wedge-shaped cortical opacities. Both the prevalence and the extent of cortical opacities were highest in the inferior-nasal quadrant and lowest in the superior-nasal quadrant of the lens. In polychotomous logistic regression, persons with the greatest excess areal involvement in the inferior half of the lens were more likely to have high exposure to sunlight, as measured by a sunlight index, than persons with excess involvement in the superior half of the lens (odds ratio, 1.73; 95%...
To compare the relationship between logMAR visual acuity (VA) and cataract severity and between c... more To compare the relationship between logMAR visual acuity (VA) and cataract severity and between contrast sensitivity (CS) and cataract severity in pure types of age-related lens opacities. Analysis included patients followed in the ongoing Italian-American Study of the Natural History of Age-Related Cataract. Lens opacities were classified and graded according to the Lens Opacities Classification System II (LOCS II). Visual acuity was measured with the Early Treatment Diabetic Retinopathy Study Chart. Contrast sensitivity was measured with the Pelli-Robson chart. Data from 1,076 eyes were used for the analysis (366 clear lenses; 550, 124, and 36 eyes with cortical, nuclear and posterior subcapsular cataract, respectively). In age-adjusted analyses, increasing severity of all three cataract types was associated with progressively higher logMAR VA, which translates into poorer acuity, and lower CS scores. For both VA and CS, the effect of increasing severity was greatest for nuclear a...
Many clinical reports have shown that arterial hypertension is correlated with a higher risk of s... more Many clinical reports have shown that arterial hypertension is correlated with a higher risk of severe ventricular arrhythmias and sudden cardiac death.Left ventricular hypertrophy, related to hypertension, is particularly considered an independent risk factor for both ventricular arrhythmias and sudden death.The aim of our study was to examine a possible correlation between an unbalanced sympatho-vagal function, assessed by several time
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