Energy gap revealed by low-temperature scanning-tunnelling spectroscopy of Si(111)-7x7 surface in illuminated slightly-doped crystals

Physical properties of Si(111)-7x7 surface of low-doped n- and p-type Si samples is studied in the liquid helium temperature region by the scanning-tunnelling microscopy and spectroscopy. Conduction required for the study is provided by illumination of the surface. Application of illumination removes completely the band bending near the surface and restores initial population of the surface states. Our results indicate the existence of the energy gap 2{\Delta} = 40 \pm 10 meV in intrinsically-populated Si(111)-7x7 surface.Comment: Submitted to Journal of Physics: Condensed Matte

Clindamycina în tratamentul prostatitei uretrogene (rezultate preliminare)

Summary. The study was performed on the basis of the data accumulated while applying antibacterial treatment for 53 patients with sexual transmitted disease. The results showed the increased efficiency of clindamycine in treatment of chronic uretrogenic prostatitis associated with Chi. Trachomatis si Ur. Urealythicum (Мус. Hominis)

Alternativă contemporană în tratamentul bolilor sexual transmisibile la bărbați (rezultate preliminare)

Summary The study was performed on the basis of the data accumulated while applying antibacterial treatment for 69 patients with sexual transmitted disease. The results showed the increased efficiency of clatithromycine in treatment of chronic uretritis caused by Chi. Trachomatis, Ur. Urealythicum and Мус. Hominis

Хроническая мигрень, ассоциированная с сахарным диабетом I типа

Catedra Neurologie, USMF „Nicolae Testemiţanu”, Institutul de Neurologie şi NeurochirurgieMigraine is estimated to be found in about 30% of patients with diabetes mellitus (DM) type I. The migraine associated with DM is a complex scientific and clinical problem. The article is a case presentation of a patient with chronic migraine (ChM) associated with DM type I having clinical manifestations which included daily medium to strong headaches located unilaterally or bilaterally with a compressive or pulsating pattern lasting more than 4 hours, sometimes associated with nausea, vomiting, photophobia, phonophobia or osmophobia. Headache attacks were aggravated by physical effort or stress. The patient has a genetic predisposition to migraine (her mother and brother suffered from ChM for many years). The patient underwent a complex examination: EEG, fundoscopy, angio-CT and MRI of the brain, ECG, ultrasound of the abdominal organs, and a radioscopy of the stomach. The psychometric evaluation utilized the Spielberger and Beck questionnaire. The test revealed a moderate level of anxiety and depression, as well as the patient’s histrionic personality. Effective treatment of metabolical changes in DM contributed to the reduction of the intensity and frequency of migraine attacks.Частота распространенности мигрени высока среди пациентов, которые давно страдают сахарным диабетом (СД) I типа, в среднем около 30%. Сопутствующая сахарному диабету мигрень представляет собой сложную и интересную в научном плане задачу. Представлен клинический случай пациентки с хронической мигренью (ХМ) в сочетании с СД I типа. В клинической картине были ежедневные приступы головной боли, средней и сильной интенсивности, одно- или двухсторонние, сжимающего или пульсирующего характера, длительностью более 4-х часов, сочетающиеся с тошнотой, иногда рвотой, фото-, фоно- и осмофобией. Приступы усиливались при физической нагрузке или при психоэмоциональных стрессах. У пациентки присутствовала генетическая предрасположенность к мигрени (мать и брат страдают хронической мигренью в течение многих лет). Больная была многосторонне обследована: ЭЭГ, офтальмоскопия, ангио-КТ, МРТ головного мозга, ЭКГ, УЗИ органов брюшной полости, Rg-скопия желудка и т.д. Психометрические тесты (Спилберг, Бек, DSM-IV опросник), выявили высокий уровень реактивной и личностной тревоги, депрессию средней степени выраженности, а также черты хистрионической личности. Эффективное лечение расстройств способствовало уменьшению интенсивности и частоты сопутствующих мигренозных атак

Quantum information processes in protein microtubules of brain neurons

We study biologically ‘orchestrated’ coherent quantum processes in collections of protein microtubules of brain neurons, which correlate with, and regulate, neuronal synaptic and membrane activity. In this situation the continuous Schrodinger evolution of each such process terminates in accordance with the specific Diosi-Penrose (DP) scheme of ‘objective reduction’ (‘OR’) of the quantum state. This orchestrated OR activity (‘Orch OR’) is taken to result in moments of conscious awareness and/or choice. We analyze Orch OR in light of advances and developments in quantum physics, computational neuroscience and quantum biology. Much attention is also devoted to the ‘beat frequencies’ of faster microtubule vibrations as a possible source of the observed electroencephalographic (‘EEG’) correlates of consciousness

Câteva consideraţii clinice și terapeutice în pionefroze

Summary Analyzing a total number of 86 patients diagnosed with pyonephrosis, we have come up to several clinical and therapeutically considerations: pyonephrosis remains a disease subject to be treated urgently through surgical interventions, the prognosis depending on the precocious diagnosis as well as the prompt and adequate therapeutical' behavior. The evolution may be endangered by the patients' tardy visit to the doctor and the creation of organic formations associated with the latter. In this case, the patient is hospitalized for a longer period of time, which entails additional rather high costs

Modified flexor digitorum superficialis slip technique for A4 pulley reconstruction

We describe a variation in the A4 pulley reconstruction technique using one slip of the flexor digitorum superficialis insertion and report the results of a biomechanical analysis of this reconstruction in cadavers. While conserving the distal bony insertion, one slip of flexor digitorum superficialis is transferred over the flexor digitorum profundus tendon and sutured to the contralateral superficialis slip insertion. This creates a new pulley at the base of the original A4 pulley that can be adjusted to accommodate an FDP repair of increased bulk. We found a 57% reduction in excess excursion due to bowstringing when compared with no repair. Furthermore the repairs were sturdy, 94% of specimens maintaining their integrity when a proximally directed force of 50 N was applied. </jats:p