SIMPLE ENTRAPMENT OF ALCALASE IN DIFFERENT SILICA XEROGELS USING THE TWO STEPS SOL-GEL METHOD

The present study has focused on the entrapment of Alcalase in different xerogels obtained by using various molar ratios of methyltriethoxysilane, dimethyldietoxisilane and tetraethoxysilane. Silica and their derivatives were characterized with regard to specific surface area (nitrogen adsorbtion), chemical composition (Fourier transform infrared spectroscopy (FT-IR)), weight loss upon heating (thermogravimetric analysis (TGA)) and catalytic activity

Stress effect on magnetoimpedance (MI) in amorphous wires at GHz frequencies and application to stress-tunable microwave composite materials

The effect of tensile stress on magnetoimpedance (MI) in CoMnSiB amorphous wires at microwave frequencies (0.5-3 GHz) is investigated both experimentally and theoretically. In the presence of the dc bias magnetic field of the order of the anisotropy field, the impedance shows very large and sensitive change when the wire is subjected to a tensile stress: 100% and 60% per 180 MPa for frequencies 500 MHz and 2.5 GHz, respectively. It is demonstrated that this behavior owes mainly to the directional change in the equilibrium magnetization caused by the applied stress and field, which agrees well with the theoretical results for the surface impedance. This stress effect on MI is proposed to use for creating microwave stress-tunable composite materials containing short magnetic wires. The analysis of the dielectric response from such materials shows that depending on the stress level in the material, the dispersion of the effective permittivity can be of a resonant or relaxation type with a considerable change in its values (up to 100% at 600 MPa). This media can be used for structural stress monitoring by microwave contrast imaging

Magnetostatic bias in multilayer microwires: theory and experiments

The hysteresis curves of multilayer microwires consisting of a soft magnetic nucleus, intermediate non-magnetic layers, and an external hard magnetic layer are investigated. The magnetostatic interaction between magnetic layers is proved to give rise to an antiferromagnetic-like coupling resulting in a magnetostatic bias in the hysteresis curves of the soft nucleus. This magnetostatic biasing effect is investigated in terms of the microwire geometry. The experimental results are interpreted considering an analytical model taking into account the magnetostatic interaction between the magnetic layers.Comment: 6 pages, 7 figure

Case Report: Positive outcome of medical leeches (hirudotherapy) for venous congestion

No Abstrac

Current applications of 3d printing in neurosurgery

Medical implications of 3-dimensional (3D) printing technology have progressed with increasingly used especially in surgical fields. 3D printing techniques are practical and anatomically accurate methods of producing patient specific models for medical education, surgical planning, training and simulation, and implants production for the assessment and treatment of neurosurgical diseases. This article presents the main directions of 3D printing models application in neurosurgery

Mechanical thrombectomy techniques for acute ischemic stroke

Mechanical thrombectomy technique was introduced as an effective and secure method in acute ischemic stroke patients suffering from intracranial large vessel occlusion (LVO). In this article, we will review the main mechanical thrombectomy techniques and current trends in this type of treatment for acute ischemic stroke

Dumitru Matcovschi – 70 yars old person a man who tells us to be not patriots in the craft but Cood’s people

Catedra Limba Română şi terminologie medicală USMF „Nicolae Testemiţanu”„The Martyr of the Romanism”, the priest and prophet D. Matcovschi is a Basarabian who for four decades „burns as a candle at the altar of the word” which expresses the truth, he is in search of fairness to his people, in search of improvement of a cruel fate, in search of identity of a land of flowers and tears. When poetry dies in the world, the magic of the word comes back to life under the faith of its creator, it gives hope, creates an atmosphere of a holliday, strengthens the belief in poet and the power of a written, pronounced or a sung word because „it was the word in the very beginning”. „Martir al Românismului” preot şi profet D. Matcovschi, este basarabeanul care de peste trei decenii arde ca o lumânare pe altarul cuvântului” ce exprimă adevărul, în căutarea dreptăţii Neamului său, în căutarea îndreptării unui destin vitreg, în căutarea identităţii unui pământ de floare şi lacrimă. Când în lume poezia moare, sub pana unui creator de rădăcină şi izvor, magia cuvântului reînvie, electrizează, dă speranţe, creează o atmosferă de sărbătoare şi flacără, însănătoşeşte sufletul, revigurează credinţa în poet şi-n puterea cuvântului scris, rostit sau cântat „căci toate au fost cuvânt la început”

Follow-up analysis of federal process of care data reported from three acute care hospitals in rural Appalachia

Background: This investigation evaluated standardized process of care data collected on selected hospitals serving a remote rural section of westernmost North Carolina. Methods: Centers for Medicare and Medicaid Services data were analyzed retrospectively for multiple clinical parameters at Fannin Regional Hospital, Murphy Medical Center, and Union General Hospital. Data were analyzed by paired t-test for individual comparisons among the three study hospitals to compare the three facilities with each other, as well as with state and national average for each parameter. Results: Centers for Medicare and Medicaid Services “Hospital Compare” data from 2011 showed Fannin Regional Hospital to have significantly higher composite scores on standard­ized clinical process of care measures relative to the national average, compared with Murphy Medical Center (P = 0.01) and Union General Hospital (P = 0.01). This difference was noted to persist when Fannin Regional Hospital was compared with Union General Hospital using common state reference data (P = 0.02). When compared with national averages, mean process of care scores reported from Murphy Medical Center and Union General Hospital were both lower but not significantly different (−3.44 versus −6.07, respectively, P = 0.54). Conclusion: The range of process of care scores submitted by acute care hospitals in western North Carolina is considerable. Centers for Medicare and Medicaid Services “Hospital Compare” information suggests that process of care measurements at Fannin Regional Hospital are sig­nificantly higher than at either Murphy Medical Center or Union General Hospital, relative to state and national benchmarks. Further investigation is needed to determine what impact these differences in process of care may have on hospital volume and/or market share in this region. Additional research is planned to identify process of care trends in this demographic and geographically rural area

Иммунологические аспекты гиперпластических процессов в эндометрии

Institutul de Cercetări Ştiinţifice în domeniul Ocrotirii Sănătăţii Mamei şi CopiluluiEndometrial hyperplasia is the most common disease of the female genital tract. Traditionally, it is thought that endometrial hyperplasia occurs as a result of a dysfunction in the hypothalamic-pituitary-ovarian system. It is clear now that the development of endometrial hyperplasia cannot be solely explained by variations in gonadotropin and sex steroid rhythms. The basis of the immune system is to detect and eliminate foreign antigens and control the proliferation of cell differentiation. Natural killer cells are considered the main regulators associated with endometrial proliferation, and are treated as immunocompetent cells responsible for the immune and reproductive maintenance of pregnancy.Гиперпластические процессы эндометрия относят к числу наиболее распространенных заболеваний женской половой сферы. Традиционно принято считать, что, в основном, гиперплазия эндометрия возникает на фоне дисфункции гипоталамо-гипофизарно- яичниковой системы. Объяснить развитие гиперплазии эндометрия только с позиции нарушения ритма выработки гонадотропинов гипофизом и половых стероидов нельзя, так как в настоящее время четко установлена возможность ее развития при двухфазном менструальном цикле. Иммунная система распознает и элиминирует чужеродные антигены и контролирует пролиферацию и правильную дифференцировку клеток собственного организма. Естественные клетки-киллеры считаются основными регуляторами физиологических процессов, связанных с пролиферацией эндометрия, и рассматриваются как иммунокомпетентные клетки, отвечающие за репродуктивный иммунитет и поддержание беременности