Thermo-optic VO-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability: errata.

The authors report an error in the phrasing and citation of the reference to simulation model input data in [Opt. Express31(14), 23260202310.1364/OE.

Thermo-optic VO-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability.

We report a novel four-port optical router that exploits non-linear properties of vanadium dioxide (VO) phase-change material to achieve asymmetrical power threshold response with power limiting capability. The scope of this study lies within the concept, modeling, and simulation of the device, with practical considerations in mind for future experimental devices. The waveguide structure, designed to operate at the wavelength of 5.

Microconical silicon mid-IR concentrators: spectral, angular and polarization response.

It is widely discussed in the literature that a problem of reduction of thermal noise of mid-wave and long-wave infrared (MWIR and LWIR) cameras and focal plane arrays (FPAs) can be solved by using light-concentrating structures. The idea is to reduce the area and, consequently, the thermal noise of photodetectors, while still providing a good collection of photons on photodetector mesas that can help to increase the operating temperature of FPAs. It is shown that this approach can be realized using microconical Si light concentrators with (111) oriented sidewalls, which can be mass-produced by anisotropic wet etching of Si (100) wafers.

[Comparison of different methos of compression of scars with prolonged release plate].

Unlabelled: The purpose of the study was to compare the effectiveness of various compression techniques with a prolonged-action patch on postoperative scars.

Material And Methods: The study included 21 patients aged 3.6±1.

[Pancreas transplantation with isolated blood supply through the splenic artery].

In multiple organ procurement, taking into consideration certain peculiarities of the vascular architectonics of the celiac trunk or an iatrogenic injury to the superior mesenteric artery, it is impossible to perform standard arterial reconstruction of a pancreas transplant with the use of a Y-shaped vascular allograft. This results in refusal from transplanting a potentially suitable organ. The purpose of our study was to assess the possibility of transplantation of the pancreatoduodenal complex with isolated blood supply via the splenic artery.

1,1'-Bis(thymine)ferrocene Nucleoside: Synthesis and Study of Its Stereoselective Formation.

The synthesis of 1,1'-bis(thymine)ferrocene nucleoside is reported. This nucleoside was obtained in a two-step synthetic methodology including a Michael addition reaction of 1,1'-bis(3-chloropropionyl)ferrocene with thymine to afford the bis(thymine) adduct in 44 % yield. In the second step, the two prochiral carbonyl functionalities in the Michael adduct were reduced to hydroxyl groups with sodium borohydride.

[Significance of expedition studies in epidemiology of tuberculosis in Iakutia (to 70 anniversary of the first expedition)].

The paper gives the data of expedition studies made since 1925 by the USSR Academy of Sciences, the USSR Academy of Medical Sciences, the USSR and RSFSR Peoples' Commissariat of Health, to examine to the epidemiology of tuberculosis in Yakutia, whose significance is very great in combatting tuberculosis and setting up the antituberculosis service in the republic. Over 70 years since the first complex expedition made by the USSR Academy of Sciences there has a more than 55-fold reduction in the spread of tuberculosis in the Republic of Sakha (Yakutia).

[Specific features of tuberculosis in the similar biogeochemical subareas of the biosphere in the Chuvash and Sakha (Iakutia) republics].

The use of biogeochemical zoning of the territories of the Chuvash and Sakha (Yakutia) Republics revealed that due to silicon deficiency in the food biogeochemical chain, the indigenous population had reduced cellular immunity, accumulated residual tuberculous changes leading to higher morbidity, disease aggravation, more frequent complications, high tuberculosis mortality.

[A clinical evaluation of the use of dentures with a Simet glass-ceramic coating].

Positive follow-up results achieved in patients with metal-glass ceramic dentures coated with Simet permit the authors to recommend glass ceramic Simet for wide clinical introduction. In reconstructive dental prosthetics with metal glass ceramic and cermet materials the dentures should be modelled in the articulator. Preventive examinations are recommended once in half a year.

[The principles of organizing hygiene education for the population].

The authors recommend the only type of movement of the toothbrush: along the vertical axis of the tooth with the maximal involvement of the gingival mucosa. The duration of the process depends not on its time, but on the number of the cleaning movements made. Twenty paired movements with the toothbrush are sufficient to remove completely the bacterial coating of the incisors, 25 movements to make so for the canines and premolars, and 30 movements for the molars.

[The clinical evaluation of the use of metal ceramic dentures with a Simet glass-ceramic coating].

Good results of clinical follow-up of patients with cermet dentures coated with cimet (glass ceramic) permit recommending this type of coating for wide practical use. Reconstructive prosthetics with glass ceramic and metal and cermet dentures should involve denture modeling in the articulator and a prophylactic check-up at least once a year with oral hygiene and functional occlusion control.

[Feasibility of predicting the dynamics of human body mass].

An original mathematical model of human energy exchange was developed and implemented on a PC. Energy exchange of healthy volunteers on a free diet and physical activity was simulated by inputting examinees' individualized parameters in the model: total body mass, fatty and lean tissue, nutritional energy capacity, power inputs. The main purpose was to study the reliability of prediction of the time course of total body mass with relation to a dietary caloric value and physical activity of an examinee, which was found to be necessary for working out an optimum metabolic diet, e.

[Response of central neurons to combined exposure to the neuropeptides angiotensin II and bradykinin].

Angiotensin-II and bradykinin decreased responses of cortical neurons to each other under both successive and simultaneous application in alert rabbits. The observed effects seem to follow complex integration of pre- and postsynaptic influences of these neuropeptides on the cortical neurons.

[Modulating effect of angiotensin II and bradykinin on the mediator sensitivity of central neurons].

Using the methods of extracellular recording of bioelectrical activity and microiontophoresis, the effect of endogenous neuropeptides (angiotensin-II and bradykinin) on the cortical neuronal sensitivity to neurotransmitters was investigated in conscious rabbits. It was found that angiotensin-II and bradykinin modified neuronal responses to neurotransmitters, increasing, decreasing and reversing their mediator sensitivity. The most prominent effect of these neuropeptides was the increase of neuronal responses to acetylcholine and noradrenaline.

[Effect of antibodies to S-100 group proteins on the electrical activity and chemical sensitivity of the cerebral cortical neurons].

The influence of antibodies to proteins S-100 group on electrical activity and chemical sensitivity of rabbit cortical neurons has been investigated by means of extracellular recording and microiontophoresis. It has been found that anti-S-100 increase as a rule spontaneous discharge rate of the neurons, decrease, blockade or invert the neuronal responses to acetylcholine, noradrenaline and glutamate action. It is supposed that proteins S-100 group take part in regulation of eleitrogenic and postsynaptic (primarily glutamate- and GABA-ergic) processes of neural and glial cells in the brain.

[Bradykinin, morphine and naloxone interaction on the sensorimotor cortical neuron level].

In experiments on awake rabbits the effect of bradykinin, morphine and naloxone (applied by means of microiontophoresis) on sensomotor cortical neurons was studied. Bradykinin increased the discharge frequency in the majority of neurons. Morphine inhibited the neuronal activity.