Colossal Magnetoresistive Switching Induced by d Ferromagnetism of MgO in a Semiconductor Nanochannel Device with Ferromagnetic Fe/MgO Electrodes.

Exploring potential spintronic functionalities in resistive switching (RS) devices is of great interest for creating new applications, such as multifunctional resistive random-access memory and novel neuromorphic computing devices. In particular, the importance of the spin-triplet state of cation vacancies in oxide materials, which is induced by localized and strong O-2p on-site Coulomb interactions, in RS devices has been overlooked. d ferromagnetism sometimes appears due to the spin-triplet state and ferromagnetic Zener's double exchange interactions between cation vacancies, which are occasionally strong enough to make nonmagnetic oxides ferromagnetic.

Insight into Scattering Mechanisms and Transport Properties of AgCuS for Flexible Thermoelectric Applications.

The development of flexible thermoelectric devices requires materials possessing ductility and high thermoelectric performance at room temperature. However, only a few existing materials meet both criteria. In this study, the ductile properties, electronic structure, and transport properties of the low-temperature phase α-AgCuS were elucidated using first-principles calculations combined with Boltzmann transport theory.

Undulated Step Structure on the (0001¯) Facet of Physical Vapor Transport-Grown 4H-SiC Crystals.

The step structure on the (0001¯)C facet of 4H-SiC boules grown by the physical vapor transport growth method with different nitrogen doping concentrations was examined in various scales, using different types of microscopy, such as differential interference contrast optical microscopy (DICM) and atomic force microscopy (AFM). DICM observations unveiled characteristic macroscopic surface features of the facet dependent on the nitrogen doping concentration. AFM observations revealed the existence of step trains of half unit-cell height (0.

Ferromagnetism and giant magnetoresistance in zinc-blende FeAs monolayers embedded in semiconductor structures.

Material structures containing tetrahedral FeAs bonds, depending on their density and geometrical distribution, can host several competing quantum ground states ranging from superconductivity to ferromagnetism. Here we examine structures of quasi two-dimensional (2D) layers of tetrahedral Fe-As bonds embedded with a regular interval in a semiconductor InAs matrix, which resembles the crystal structure of Fe-based superconductors. Contrary to the case of Fe-based pnictides, these FeAs/InAs superlattices (SLs) exhibit ferromagnetism, whose Curie temperature (T) increases rapidly with decreasing the InAs interval thickness t (T ∝ t), and an extremely large magnetoresistance up to 500% that is tunable by a gate voltage.

Intrinsic defect formation and the effect of transition metal doping on transport properties in a ductile thermoelectric material α-AgS: a first-principles study.

In this paper, the electronic structure and transport properties of a ductile thermoelectric material α-Ag2S are examined using first-principles calculations combined with the Boltzmann transport equation within a constant relaxation-time approximation. The use of the exchange-correlation functional SCAN + rVV10 successfully describes the geometric and electronic structure of α-Ag2S with a direct bandgap value of 0.99 eV, which is consistent with the previous experimental observations.

Hole-mediated ferromagnetism in a high-magnetic moment material, Gd-doped GaN.

As an exotic material in spintronics, Gd-doped GaN is known as a room temperature ferromagnetic material that possesses a large magnetic moment (4000per Gd ion). This paper theoretically proposes that the large magnetic moment and room temperature ferromagnetism observed in Gd-doped GaN is caused by N 2p holes based on the assumption that Ga-vacancies result from the introduction of Gd ions. This causes that the too large magnetic moment is estimated for Gd ions if only Gd ions contributed the magnetic moment.

A Case of child abuse disguised as drug intoxication: Abuse should suspected in cases of accidental drug ingestion.

A 2-year-old boy presented to the emergency room of abuse to the child guidance office in the relevant public our hospital with disturbance of consciousness. His mother health center. Additionally, we reported 5 cases of neglect reported that he ingested flunitrazepam, which his mother that led to accidental ingestion of chemical substances to had been using and had given him in order to put him to the child guidance office.

First principles studies of GeTe based dilute magnetic semiconductors.

The electronic structure and magnetic properties of GeTe-based dilute magnetic semiconductors (DMS) are investigated by the Korringa-Kohn-Rostoker Green's function method and the projector augmented wave method. Our calculations for the formation energies of transition metal impurities (TM) in GeTe indicate that the solubilities of TM are quite high compared to typical III-V and II-VI based DMS and that the TM doped GeTe has a possibility of room temperature ferromagnetism with high impurity concentrations. The high solubilities originate from the fact that the top of the valence bands of GeTe consists of the Te-5p anti-bonding states which are favorable to acceptor doping.

Genomic and non-genomic effects of aldosterone on the individual variation of the sweat Na+ concentration during exercise in trained athletes.

To clarify whether the resting background effects (genomic) or exercise-related action (non-genomic) of aldosterone (ALD) is primarily affected to an individual variation in the sweat Na+ concentration ([Na+]sweat), we analyzed the cross-sectional relationship between [Na+]sweat and the plasma ALD concentration during rest and exercise in a hot environment. Eleven college-aged male subjects with a mean maximal oxygen uptake of 48 (range 42-59) ml kg-1 min-1 performed three sessions of 20-min cycle exercise at two levels of intensity (40 or 60% VO2max) in a room maintained at 31 degrees C. The chest sweat rate (SRch) and its containing Na+ were higher and individual differences in SRch and [Na+]sweat were greater at 60% exercise than at 40% exercise.

Outcome and characteristics of out-of-hospital cardiac arrest according to location of arrest: A report from a large-scale, population-based study in Osaka, Japan.

Objective: To evaluate the outcome and the factors concerned with of out-of-hospital cardiac arrest patients according to the location of the collapse.

Methods: From May 1st, 1998 to April 30th, 2001, 15,211 consecutive out-of-hospital cardiac arrest cases considered for resuscitation were recorded. Of these cases 7540 arrests in subjects aged 18 years or older with cardiac aetiology were analyzed.

Three year longitudinal study for out-of-hospital cardiac arrest in Osaka Prefecture.

Objective: To analyze the longitudinal changes in the treatment of out-of-hospital cardiac arrests. These analyses have focused on the time interval from the receipt of call until defibrillation of patients with ventricular fibrillation.

Design: Population-based, prospective longitudinal study according to the Utstein style.

Incidence and survival rate of bystander-witnessed out-of-hospital cardiac arrest with cardiac etiology in Osaka, Japan: a population-based study according to the Utstein style.

Purpose: To clarify the incidence and survival rate of bystander-witnessed out-of-hospital cardiac arrests (OHCA) with cardiac etiology in Osaka Prefecture, Japan, with a population of nearly 9 million according to the Utstein style.

Subjects And Methods: 5047 consecutive OHCA cases were treated by ambulance personnel during the 12-month period starting since 1 May 1998. 974 cases were considered to be bystander-witnessed OHCA with cardiac etiology and analyzed using the Utstein style.

[2 cases of acute retrobulbar neuritis by thinner inhalation; detected methanol of high concentration in gas phase assay].

We encountered two cases of acute retrobulbar neuritis due to lacquer thinner vapor sniffing. Two men, aged 21 and 23, had been addicted to thinner sniffing for many years. After they became conscious of their symptoms of slight visual disturbance, they continued the sniffing for several days until they lost their vision.

[Relapse of Creosote poisoning: report of a case taking Seirogan tablets].

A thirty-eight year old man took about 180 tablets of Seirogan. He was unconscious and had dyspnea with dark brown urine on admission. He recovered gradually after initial treatment.

An analysis of time factors in out-of-hospital cardiac arrest in Osaka Prefecture.

Objective: To ascertain important factors in the improvement of out-of-hospital cardiac arrest survival rates through analysis of data for Osaka Prefecture with the focus on time factors.

Design: Prospective cohort study according to the Utstein style.

Setting: Osaka Prefecture (population 8,830,000) served by a single emergency medical services system.

Decreased expression of DNA-dependent protein kinase, a DNA repair protein, during human colon carcinogenesis.

DNA-dependent protein kinase (DNA-PK), consisting of a catalytic subunit (DNA-PKcs) and the Ku70 and Ku86 proteins, participates in the repair of DNA double-strand breaks (DSBs). We assessed its expression immunohistochemically in normal human colon tissue, colon adenomas, colon carcinomas, and normal tissue distant from carcinomas. Normal colonocytes expressed all DNA-PK proteins.