Photocatalytic Activity of Fibrous Ti/Ce Oxides Obtained by Hydrothermal Impregnation of Short Flax Fibers.

Fibrous Ti/Ce oxide photocatalysts were prepared for the first time by a biomimetic solution process using short flax fibers (flax straw processing waste) as a biotemplate. Titanium polyhydroxy complex solutions with 3% and 5% cerium were used as precursors. Flax fibers were impregnated in an autoclave under hydrothermal conditions.

Photocatalytic and adsorption properties of TiO-pillared montmorillonite obtained by hydrothermally activated intercalation of titanium polyhydroxo complexes.

We report on a new approach for the synthesis of TiO-pillared montmorillonite, where the pillars exhibit a high degree of crystallinity (nanocrystals) representing a mixture of anatase and rutile phases. The structures exhibit improved adsorption and photocatalytic activity as a result of hydrothermally activated intercalation of titanium polyhydroxo complexes (i.e.

Thermal Emission of Alkali Metal Ions from Al-Pillared Montmorillonite Studied by Mass Spectrometric Method.

The thermal emission of alkali metal ions from Al-pillared montmorillonite in comparison with its natural form was studied by mass spectrometry in the temperature range 770-930 K. The measurements were carried out on a magnetic mass spectrometer MI-1201. For natural montmorillonite, the densities of the emission currents () decrease in the mass spectrum in the following sequence (T = 805 K, A/cm): K (4.

Effect of diagnostic ultrasound during the fetal period on learning and memory in mice.

Background: An experiment was conducted to find out whether in utero exposure to diagnostic ultrasound leads to changes in postnatal behavior in adult mice.

Methods: A total of 15 pregnant Swiss albino mice were exposed to diagnostic levels of ultrasound (3.5 MHz, 65 mW/cm(2), intensity((spatial peak-temporal peak)) (I(SPTP))=1 mW/cm(2), intensity((spatial average-temporal average)) (I(SATA))=240 mW/cm(2)) for 30 min on day 14 or 16 of gestation.

Unilateral congenital elongation of the cervical part of the internal carotid artery with kinking and looping: two case reports and review of the literature.

Unilateral and bilateral variation in the course and elongation of the cervical (extracranial) part of the internal carotid artery (ICA) leading to its tortuosity, kinking and coiling or looping is not a rare condition, which could be caused by both embryological and acquired factors. Patients with such variations may be asymptomatic in some cases; in others, they can develop cerebrovascular symptoms due to carotid stenosis affecting cerebral circulation. The risk of transient ischemic attacks in patients with carotid stenosis is high and its surgical correction is indicated for the prevention of ischemic stroke.

Variations in the branching pattern of the aortic arch in three Trinidadians.

In routine anatomical dissections for the purpose of preparation of teaching and museum specimens, it was observed that three cadavers of elderly Trinidadian males (of African descent) showed uncommon origin and variations in the number of branches of the aortic arch.

[Comparison of various types of epidural analgesia after abdominal operations].

The authors compare three types of epidural analgesia using a mixture of 0.125% bupivacaine solution and morphine in 102 patients after abdominal surgery. Patient-controlled analgesia was applied in Group 1; the mixture was injected as a bolus in Group 2; continuous epidural infusion was used in Group 3.

Gestational stage sensitivity to ultrasound effect on postnatal growth and development of mice.

Background: An experiment was conducted to find out whether ultrasound exposure leads to changes in postnatal growth and development in the mouse.

Methods: A total of 15 pregnant Swiss albino mice were exposed to diagnostic levels of ultrasound (3.5 MHz, 65 mW/cm2, I(SPTP) = 1 mW/cm2 Intensity(Spatial Peak-Temporal Peak), I(SATA) = 240 mW/cm2 Intensity(Spatial Average-Temporal Average)) for 30 min for a single day between days 10 and 18 of gestation (GD 10-18).

[Alcohol-induced arterial hypertension and genetic polymorphism of alcohol-metabolizing enzymes].

Aim: To study arterial pressure (AP) and heart rate (HR) in patients suffering from alcohol withdrawal syndrome (AWS) with relation to genetic polymorphism of alcohol dehydrogenase-2 (ADG2) and aldehyde dehydrogenase-2 (AlDG2).

Material And Methods: AP and HR were analysed for 36 alcoholics (83 hospitalizations, including repeated ones) with genotypes ADG2 and AIDG2 at admission to and discharge from narcological hospital.

Results: ADG2 genotypes distribution was the following: ADG2-1/1--61.

Long-term effects of diagnostic ultrasound during fetal period on postnatal development and adult behavior of mouse.

Pregnant Swiss albino mice were exposed to diagnostic levels of ultrasound (3.5 MHz, intensity 65 mW, I(SPTP) = 1 W/cm(2), I(SATA) = 240 W/cm(2)) for 10, 20 and 30 minutes on day 14 of gestation. Sham exposed controls were maintained for comparison.